annotate src/dnsbl.cpp @ 458:6c1c2bd9fb54 stable-6-0-73

ignore dnswl entries if the sender is <>
author Carl Byington <carl@five-ten-sg.com>
date Tue, 18 Sep 2018 09:49:21 -0700
parents 2cf7183a911c
children 79e944269c0b
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1 /*
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2
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3 Copyright (c) 2013 Carl Byington - 510 Software Group, released under
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c7fc218686f5 gpl3, block mail to recipients that cannot reply
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4 the GPL version 3 or any later version at your choice available at
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5 http://www.gnu.org/licenses/gpl-3.0.txt
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6
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7 Based on a sample milter Copyright (c) 2000-2003 Sendmail, Inc. and its
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8 suppliers. Inspired by the DCC by Rhyolite Software
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9
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10 -b port The port used to talk to the dcc interface daemon
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11 -r port The port used to talk to our internal dns resolver processes
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12 -p port The port through which the MTA will connect to this milter.
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13 -t sec The timeout value.
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14 -c Check the config, and print a copy to stdout. Don't start the
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15 milter or do anything with the socket.
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16 -s Stress test by loading and deleting the current config in a loop.
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17 -d level set the debug level
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18 -e f|t Print the results of looking up from address f and to address
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19 t in the current config
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20
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21 */
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22
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23
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24 // from sendmail sample
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25 #include <sys/types.h>
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26 #include <sys/stat.h>
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27 #include <errno.h>
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28 #include <sysexits.h>
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29 #include <unistd.h>
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30
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31 // needed for socket io
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32 #include <sys/ioctl.h>
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33 #include <net/if.h>
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34 #include <arpa/inet.h>
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35 #include <netinet/in.h>
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36 #include <netinet/tcp.h>
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37 #include <netdb.h>
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38 #include <sys/socket.h>
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39 #include <sys/un.h>
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40
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41 // needed for thread
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42 #include <pthread.h>
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43
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44 // needed for std c++ collections
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45 #include <set>
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46 #include <map>
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47 #include <list>
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48
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49 // for the dns resolver
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50 #include <netinet/in.h>
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51 #include <resolv.h>
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52
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53 // misc stuff needed here
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54 #include <ctype.h>
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55 #include <syslog.h>
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56 #include <pwd.h>
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57 #include <sys/wait.h> /* header for waitpid() and various macros */
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58 #include <signal.h> /* header for signal functions */
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59
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60 #include "includes.h"
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61
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62 #ifndef HAVE_DAEMON
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63 #include "daemon.h"
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64 #include "daemon.c"
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65 #endif
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66
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67 #ifndef HAVE_MEMRCHR
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68 void *memrchr(const void *a, int c, size_t len);
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69 void *memrchr(const void *a, int c, size_t len) {
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70 const unsigned char *p = (const unsigned char *)a;
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71 for (p += len-1; (const void *)p >= a; p--)
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72 if (*p == c)
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73 return (void *)p;
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74 return (void *)0;
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75 }
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76 #endif
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77
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78 extern "C" {
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79 sfsistat mlfi_connect(SMFICTX *ctx, char *hostname, _SOCK_ADDR *hostaddr);
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80 sfsistat mlfi_helo(SMFICTX * ctx, char *helohost);
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81 sfsistat mlfi_envfrom(SMFICTX *ctx, char **argv);
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82 sfsistat mlfi_envrcpt(SMFICTX *ctx, char **argv);
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83 sfsistat mlfi_header(SMFICTX* ctx, char* headerf, char* headerv);
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84 sfsistat mlfi_body(SMFICTX *ctx, u_char *data, size_t len);
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85 sfsistat mlfi_eom(SMFICTX *ctx);
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86 sfsistat mlfi_abort(SMFICTX *ctx);
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87 sfsistat mlfi_close(SMFICTX *ctx);
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88 void sig_chld(int signo);
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89 }
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90
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91 int debug_syslog = 0;
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92 bool syslog_opened = false;
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93 bool use_syslog = true; // false to printf
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94 bool loader_run = true; // used to stop the config loader thread
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95 CONFIG *config = NULL; // protected by the config_mutex
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96 int generation = 0; // protected by the config_mutex
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97 const int maxlen = maxdnslength; // used for snprintf buffers
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98 regex_t srs_pattern; // used to detect srs coding in mail addresses
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99 regex_t prvs_pattern; // used to detect prvs coding in mail addresses
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100 regex_t dkim_r_pattern; // used to detect dkim signatures authenticated by the upstream opendkim milter
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101 regex_t dkim_s_pattern; // used to detect dkim signatures generated by the upstream opendkim milter
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102 regex_t from_pattern; // used to extract the senders mail domain from the body from: header
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103
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104 pthread_mutex_t config_mutex;
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105 pthread_mutex_t syslog_mutex;
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106 pthread_mutex_t resolve_mutex;
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107 pthread_mutex_t fd_pool_mutex;
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108 pthread_mutex_t rate_mutex;
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109
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110 std::set<int> fd_pool;
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111 int NULL_SOCKET = -1;
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112 const time_t ERROR_SOCKET_TIME = 60; // number of seconds between attempts to open a socket to the dns resolver process
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113 const char *resolver_port = NULL; // unix domain socket to talk to the dns resolver process
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114 int resolver_socket = NULL_SOCKET; // socket used to listen for resolver requests
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115 const char *dccifd_port = NULL; // unix domain socket to talk to the dcc interface daemon
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116 time_t last_error_time = 0;
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117 int resolver_sock_count = 0; // protected with fd_pool_mutex
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118 int resolver_pool_size = 0; // protected with fd_pool_mutex
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119 rates rcpt_hourly_counts; // protected with rate_mutex
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120 rates rcpt_daily_counts; // protected with rate_mutex
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121 auth_addresses auth_hourly_addresses; // protected with rate_mutex
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122 auth_addresses auth_daily_addresses; // protected with rate_mutex
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125
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126 ns_map::~ns_map() {
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127 for (string_map::iterator i=ns_host.begin(); i!=ns_host.end(); i++) {
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128 const char *x = (*i).first;
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129 const char *y = (*i).second;
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130 free((void*)x);
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131 free((void*)y);
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132 }
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133 ns_ip.clear();
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134 ns_host.clear();
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135 }
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137
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138 void ns_map::add(const char *name, const char *refer) {
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139 string_map::iterator i = ns_host.find(name);
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140 if (i != ns_host.end()) return;
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141 char *x = strdup(name);
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142 char *y = strdup(refer);
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143 ns_ip[x] = 0;
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144 ns_host[x] = y;
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145
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146 }
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147
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148 // packed structure to allow a single socket write to dump the
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149 // length and the following answer. The packing attribute is gcc specific.
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150 struct glommer {
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151 size_t length;
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152 #ifdef NS_PACKETSZ
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153 u_char answer[maxdnslength]; // with a resolver, we return resolver answers
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154 #else
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155 uint32_t answer; // without a resolver, we return a single ipv4 address in network byte order, 0 == no answer
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156 #endif
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157 } __attribute__ ((packed));
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158
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159
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160 ////////////////////////////////////////////////
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161 // helper to manipulate recipient counts
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162 //
255
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163 void incr_rcpt_count(const char *user, int &hourly, int &daily);
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164 void incr_rcpt_count(const char *user, int &hourly, int &daily) {
192
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165 pthread_mutex_lock(&rate_mutex);
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166 rates::iterator i = rcpt_hourly_counts.find(user);
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167 hourly = 1;
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168 if (i == rcpt_hourly_counts.end()) {
192
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169 user = strdup(user);
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170 rcpt_hourly_counts[user] = hourly;
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171 }
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172 else {
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173 hourly = ++((*i).second);
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174 }
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175
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176 rates::iterator j = rcpt_daily_counts.find(user);
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177 daily = 1;
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178 if (j == rcpt_daily_counts.end()) {
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179 user = strdup(user);
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180 rcpt_daily_counts[user] = daily;
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181 }
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182 else {
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183 daily = ++((*j).second);
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184 }
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185 pthread_mutex_unlock(&rate_mutex);
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186 }
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187
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188
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189 void add_auth_address(const char *user, int &hourly, int &daily, uint32_t ip);
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190 void add_auth_address(const char *user, int &hourly, int &daily, uint32_t ip) {
278
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191 pthread_mutex_lock(&rate_mutex);
280
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192 auth_addresses::iterator i = auth_hourly_addresses.find(user);
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193 if (i == auth_hourly_addresses.end()) {
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194 user = strdup(user);
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195 auth_hourly_addresses[user] = new uint32_t_set;
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196 auth_hourly_addresses[user]->insert(ip);
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197 hourly = 1;
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198 }
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199 else {
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200 uint32_t_set::iterator k = ((*i).second)->find(ip);
280
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201 if (k == ((*i).second)->end()) ((*i).second)->insert(ip);
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202 hourly = ((*i).second)->size();
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203 }
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204
280
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205 auth_addresses::iterator j = auth_daily_addresses.find(user);
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206 if (j == auth_daily_addresses.end()) {
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207 user = strdup(user);
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208 auth_daily_addresses[user] = new uint32_t_set;
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209 auth_daily_addresses[user]->insert(ip);
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210 daily = 1;
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211 }
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212 else {
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213 uint32_t_set::iterator k = ((*j).second)->find(ip);
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214 if (k == ((*j).second)->end()) ((*j).second)->insert(ip);
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215 daily = ((*j).second)->size();
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216 }
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217 pthread_mutex_unlock(&rate_mutex);
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218 }
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219
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220 ////////////////////////////////////////////////
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221 // helper to discard the strings held by a context_map
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222 //
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223 void discard(context_map &cm);
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224 void discard(context_map &cm) {
192
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225 for (context_map::iterator i=cm.begin(); i!=cm.end(); i++) {
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226 const char *x = (*i).first;
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227 free((void*)x);
192
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228 }
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229 cm.clear();
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230 }
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231
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232
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233 ////////////////////////////////////////////////
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234 // helper to register a string in a context_map
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235 //
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236 void register_string(context_map &cm, const char *name, CONTEXT *con);
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237 void register_string(context_map &cm, const char *name, CONTEXT *con) {
192
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238 context_map::iterator i = cm.find(name);
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239 if (i != cm.end()) return;
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240 char *x = strdup(name);
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241 cm[x] = con;
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242 }
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243
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244
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245 ////////////////////////////////////////////////
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246 // disconnect the fd from the dns resolver process
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247 //
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248 void my_disconnect(int sock, bool decrement = true);
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249 void my_disconnect(int sock, bool decrement) {
192
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250 if (sock != NULL_SOCKET) {
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251 if (decrement) {
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252 pthread_mutex_lock(&fd_pool_mutex);
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253 resolver_sock_count--;
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254 pthread_mutex_unlock(&fd_pool_mutex);
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255 }
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256 shutdown(sock, SHUT_RDWR);
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257 close(sock);
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258 }
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259 }
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260
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261
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262 ////////////////////////////////////////////////
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263 // return fd connected to the dns resolver process
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264 //
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265 int my_connect();
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266 int my_connect() {
192
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267 // if we have had recent errors, don't even try to open the socket
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268 if ((time(NULL) - last_error_time) < ERROR_SOCKET_TIME) return NULL_SOCKET;
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269
192
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270 // nothing recent, maybe this time it will work
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271 int sock = NULL_SOCKET;
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272 sockaddr_un server;
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273 memset(&server, '\0', sizeof(server));
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274 server.sun_family = AF_UNIX;
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275 strncpy(server.sun_path, resolver_port, sizeof(server.sun_path)-1);
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276 sock = socket(AF_UNIX, SOCK_STREAM, 0);
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277 if (sock != NULL_SOCKET) {
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278 bool rc = (connect(sock, (sockaddr *)&server, sizeof(server)) == 0);
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279 if (!rc) {
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280 my_disconnect(sock, false);
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281 sock = NULL_SOCKET;
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282 last_error_time = time(NULL);
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283 }
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284 }
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285 else last_error_time = time(NULL);
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286 if (sock != NULL_SOCKET) {
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287 pthread_mutex_lock(&fd_pool_mutex);
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288 resolver_sock_count++;
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289 pthread_mutex_unlock(&fd_pool_mutex);
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290 }
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291 return sock;
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292 }
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293
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294
236
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295 ////////////////////////////////////////////////
381
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296 // Ask a dns question and get an A record answer in network byte order.
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297 // We don't try very hard, just using the default resolver retry settings.
236
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298 // If we cannot get an answer, we just accept the mail.
414
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299 // If the qtype is ns_t_txt, the answer is placed in my_answer which
381
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300 // must be non-null, and the return value can be ignored.
414
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301 // A null string is returned in my_answer in the case of errors.
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parents: 410
diff changeset
302 // If the qtype is ns_t_a, one of the ip addresses is returned in network byte order,
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parents: 410
diff changeset
303 // and if my_answer is non-null, all the ip addresses are returned in
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Carl Byington <carl@five-ten-sg.com>
parents: 410
diff changeset
304 // my_answer (in network byte order), prepended with the count.
382
c378e9d03f37 start parsing spf txt records
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parents: 381
diff changeset
305 // IP address 0 is returned in case of errors.
236
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parents: 235
diff changeset
306 //
414
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Carl Byington <carl@five-ten-sg.com>
parents: 410
diff changeset
307 uint32_t dns_interface(mlfiPriv &priv, const char *question, int qtype, bool maybe_ip, ns_map *nameservers, char *my_answer, size_t my_size) {
419
91f2a127ec69 spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
Carl Byington <carl@five-ten-sg.com>
parents: 415
diff changeset
308 // return null string if there are no txt answers
91f2a127ec69 spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
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parents: 415
diff changeset
309 // return zero count if there are no a answers
91f2a127ec69 spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
Carl Byington <carl@five-ten-sg.com>
parents: 415
diff changeset
310 if (my_answer && my_size) memset(my_answer, 0, my_size);
382
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
311
236
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parents: 235
diff changeset
312 // tell sendmail we are still working
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parents: 235
diff changeset
313 #if _FFR_SMFI_PROGRESS
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parents: 235
diff changeset
314 if (priv.eom) smfi_progress(priv.ctx);
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parents: 235
diff changeset
315 #endif
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parents: 235
diff changeset
316
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
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parents: 235
diff changeset
317 // this part can be done without locking the resolver mutex. Each
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parents: 235
diff changeset
318 // milter thread is talking over its own socket to a separate resolver
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parents: 235
diff changeset
319 // process, which does the actual dns resolution.
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parents: 235
diff changeset
320 if (priv.err) return 0; // cannot ask more questions on this socket.
381
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
321 if (maybe_ip && (qtype == ns_t_a)) {
409
e018ed19a1cc require 3 dots in bare ip addresses
Carl Byington <carl@five-ten-sg.com>
parents: 402
diff changeset
322 int c = 0;
410
6b03435868cb require 3 dots in bare ip addresses
Carl Byington <carl@five-ten-sg.com>
parents: 409
diff changeset
323 const char* q = question;
409
e018ed19a1cc require 3 dots in bare ip addresses
Carl Byington <carl@five-ten-sg.com>
parents: 402
diff changeset
324 while (*q) {
e018ed19a1cc require 3 dots in bare ip addresses
Carl Byington <carl@five-ten-sg.com>
parents: 402
diff changeset
325 if (*q == '.') c++;
e018ed19a1cc require 3 dots in bare ip addresses
Carl Byington <carl@five-ten-sg.com>
parents: 402
diff changeset
326 q++;
e018ed19a1cc require 3 dots in bare ip addresses
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parents: 402
diff changeset
327 }
e018ed19a1cc require 3 dots in bare ip addresses
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parents: 402
diff changeset
328 // might be a bare IPv4 address, try this first to avoid dns lookups that may not be needed
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
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parents: 235
diff changeset
329 in_addr ip;
409
e018ed19a1cc require 3 dots in bare ip addresses
Carl Byington <carl@five-ten-sg.com>
parents: 402
diff changeset
330 if ((c == 3) && inet_aton(question, &ip)) {
252
836b7f2357f9 need ntohl() before using masks that are defined in host byte order
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parents: 249
diff changeset
331 return ip.s_addr;
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
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parents: 235
diff changeset
332 }
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parents: 235
diff changeset
333 }
381
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
334 int8_t qt = qtype;
879a470c6ac3 fetch spf txt records for required dkim signers
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parents: 379
diff changeset
335 priv.my_write((const char *)&qt, 1);// write the query type
328
b4f766947202 allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 327
diff changeset
336 size_t n = strlen(question);
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
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parents: 235
diff changeset
337 if (question[n-1] == '.') {
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
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parents: 235
diff changeset
338 priv.my_write(question, n+1); // write the question including the null terminator
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parents: 235
diff changeset
339 }
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parents: 235
diff changeset
340 else {
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parents: 235
diff changeset
341 priv.my_write(question, n); // write the question
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parents: 235
diff changeset
342 priv.my_write(".", 2); // and the fully qualified . terminator and null string terminator
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parents: 235
diff changeset
343 }
381
879a470c6ac3 fetch spf txt records for required dkim signers
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parents: 379
diff changeset
344
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
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parents: 235
diff changeset
345 glommer glom;
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parents: 235
diff changeset
346 char *buf = (char *)&glom;
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parents: 235
diff changeset
347 priv.my_read(buf, sizeof(glom.length));
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parents: 235
diff changeset
348 buf += sizeof(glom.length);
390
bcef093b1ba6 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 389
diff changeset
349 #ifdef RESOLVER_DEBUG
236
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parents: 235
diff changeset
350 char text[1000];
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parents: 235
diff changeset
351 snprintf(text, sizeof(text), "dns_interface() wrote question %s and has answer length %d", question, glom.length);
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parents: 235
diff changeset
352 my_syslog(text);
390
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parents: 389
diff changeset
353 #endif
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
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parents: 235
diff changeset
354 if (glom.length == 0) return 0;
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parents: 235
diff changeset
355 if (glom.length > sizeof(glom.answer)) {
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Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
356 priv.err = true;
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parents: 235
diff changeset
357 return 0; // cannot process overlarge answers
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parents: 235
diff changeset
358 }
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parents: 235
diff changeset
359 priv.my_read(buf, glom.length);
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parents: 235
diff changeset
360
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parents: 235
diff changeset
361 #ifdef NS_PACKETSZ
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parents: 235
diff changeset
362 // now we need to lock the resolver mutex to keep the milter threads from
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Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
363 // stepping on each other while parsing the dns answer.
252
836b7f2357f9 need ntohl() before using masks that are defined in host byte order
Carl Byington <carl@five-ten-sg.com>
parents: 249
diff changeset
364 uint32_t ret_address = 0;
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
365 pthread_mutex_lock(&resolve_mutex);
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
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parents: 235
diff changeset
366 // parse the answer
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parents: 235
diff changeset
367 ns_msg handle;
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parents: 235
diff changeset
368 ns_rr rr;
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parents: 235
diff changeset
369 if (ns_initparse(glom.answer, glom.length, &handle) == 0) {
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parents: 235
diff changeset
370 // look for ns names
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parents: 235
diff changeset
371 if (nameservers) {
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parents: 235
diff changeset
372 ns_map &ns = *nameservers;
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parents: 235
diff changeset
373 int rrnum = 0;
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parents: 235
diff changeset
374 while (ns_parserr(&handle, ns_s_ns, rrnum++, &rr) == 0) {
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parents: 235
diff changeset
375 if (ns_rr_type(rr) == ns_t_ns) {
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parents: 235
diff changeset
376 char nam[NS_MAXDNAME+1];
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parents: 235
diff changeset
377 char *n = nam;
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parents: 235
diff changeset
378 const u_char *p = ns_rr_rdata(rr);
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parents: 235
diff changeset
379 while (((n-nam) < NS_MAXDNAME) && ((size_t)(p-glom.answer) < glom.length) && *p) {
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parents: 235
diff changeset
380 size_t s = *(p++);
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parents: 235
diff changeset
381 if (s > 191) {
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parents: 235
diff changeset
382 // compression pointer
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parents: 235
diff changeset
383 s = (s-192)*256 + *(p++);
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parents: 235
diff changeset
384 if (s >= glom.length) break; // pointer outside bounds of answer
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parents: 235
diff changeset
385 p = glom.answer + s;
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parents: 235
diff changeset
386 s = *(p++);
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
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parents: 235
diff changeset
387 }
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Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
388 if (s > 0) {
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
389 if ((size_t)(n-nam) >= (NS_MAXDNAME-s)) break; // destination would overflow name buffer
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Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
390 if ((size_t)(p-glom.answer) >= (glom.length-s)) break; // source outside bounds of answer
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
391 memcpy(n, p, s);
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
392 n += s;
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
393 p += s;
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Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
394 *(n++) = '.';
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
395 }
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
396 }
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
397 if (n-nam) n--; // remove trailing .
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Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
398 *n = '\0'; // null terminate it
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
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parents: 235
diff changeset
399 ns.add(nam, question); // ns host to lookup later
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
400 }
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
401 }
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
402 rrnum = 0;
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
403 while (ns_parserr(&handle, ns_s_ar, rrnum++, &rr) == 0) {
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
404 if (ns_rr_type(rr) == ns_t_a) {
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
405 char* nam = (char*)ns_rr_name(rr);
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
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parents: 235
diff changeset
406 ns_mapper::iterator i = ns.ns_ip.find(nam);
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
407 if (i != ns.ns_ip.end()) {
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
408 // we want this ip address
252
836b7f2357f9 need ntohl() before using masks that are defined in host byte order
Carl Byington <carl@five-ten-sg.com>
parents: 249
diff changeset
409 uint32_t address;
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
410 memcpy(&address, ns_rr_rdata(rr), sizeof(address));
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parents: 235
diff changeset
411 ns.ns_ip[nam] = address;
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
412 }
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
413 }
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
414 }
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
415 }
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
416 int rrnum = 0;
381
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
417 if (qtype == ns_t_a) {
414
d5a1ed33d3ae spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
Carl Byington <carl@five-ten-sg.com>
parents: 410
diff changeset
418 uint32_t *ans = (uint32_t *)my_answer;
d5a1ed33d3ae spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
Carl Byington <carl@five-ten-sg.com>
parents: 410
diff changeset
419 size_t c = 0;
d5a1ed33d3ae spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
Carl Byington <carl@five-ten-sg.com>
parents: 410
diff changeset
420 size_t m = my_size/4; // 1 + max ipv4 addresses that will fit in the answer buffer
381
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
421 while (ns_parserr(&handle, ns_s_an, rrnum++, &rr) == 0) {
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
422 if (ns_rr_type(rr) == qtype) {
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
423 uint32_t address;
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
424 memcpy(&address, ns_rr_rdata(rr), sizeof(address));
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
425 ret_address = address;
414
d5a1ed33d3ae spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
Carl Byington <carl@five-ten-sg.com>
parents: 410
diff changeset
426 if (ans && (c < m-1)) {
d5a1ed33d3ae spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
Carl Byington <carl@five-ten-sg.com>
parents: 410
diff changeset
427 c++;
d5a1ed33d3ae spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
Carl Byington <carl@five-ten-sg.com>
parents: 410
diff changeset
428 ans[c] = address;
d5a1ed33d3ae spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
Carl Byington <carl@five-ten-sg.com>
parents: 410
diff changeset
429 }
381
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
430 }
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
431 }
414
d5a1ed33d3ae spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
Carl Byington <carl@five-ten-sg.com>
parents: 410
diff changeset
432 if (ans && (c < m)) ans[0] = c;
381
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
433 }
414
d5a1ed33d3ae spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
Carl Byington <carl@five-ten-sg.com>
parents: 410
diff changeset
434 if ((qtype == ns_t_mx) && (my_answer) && (my_size > 1)) {
d5a1ed33d3ae spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
Carl Byington <carl@five-ten-sg.com>
parents: 410
diff changeset
435 uint32_t c = 0;
d5a1ed33d3ae spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
Carl Byington <carl@five-ten-sg.com>
parents: 410
diff changeset
436 while (ns_parserr(&handle, ns_s_an, rrnum++, &rr) == 0) {
d5a1ed33d3ae spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
Carl Byington <carl@five-ten-sg.com>
parents: 410
diff changeset
437 if (ns_rr_type(rr) == qtype) {
d5a1ed33d3ae spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
Carl Byington <carl@five-ten-sg.com>
parents: 410
diff changeset
438 char exchange[NS_MAXDNAME];
415
16451edcb962 spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
Carl Byington <carl@five-ten-sg.com>
parents: 414
diff changeset
439 //size_t rdlen = ns_rr_rdlen(rr);
16451edcb962 spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
Carl Byington <carl@five-ten-sg.com>
parents: 414
diff changeset
440 //const uint16_t pri = ns_get16(rdata);
414
d5a1ed33d3ae spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
Carl Byington <carl@five-ten-sg.com>
parents: 410
diff changeset
441 const unsigned char *rdata = ns_rr_rdata(rr);
419
91f2a127ec69 spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
Carl Byington <carl@five-ten-sg.com>
parents: 415
diff changeset
442 int len = dn_expand(ns_msg_base(handle), ns_msg_base(handle) + ns_msg_size(handle), rdata + NS_INT16SZ, exchange, sizeof(exchange));
91f2a127ec69 spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
Carl Byington <carl@five-ten-sg.com>
parents: 415
diff changeset
443 if (len > 0) { // no error
91f2a127ec69 spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
Carl Byington <carl@five-ten-sg.com>
parents: 415
diff changeset
444 len = strlen(exchange) + 1;
91f2a127ec69 spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
Carl Byington <carl@five-ten-sg.com>
parents: 415
diff changeset
445 if (my_size >= (uint32_t)len+1) {
91f2a127ec69 spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
Carl Byington <carl@five-ten-sg.com>
parents: 415
diff changeset
446 strcpy(my_answer, exchange);
91f2a127ec69 spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
Carl Byington <carl@five-ten-sg.com>
parents: 415
diff changeset
447 my_answer += len;
91f2a127ec69 spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
Carl Byington <carl@five-ten-sg.com>
parents: 415
diff changeset
448 my_size -= len;
91f2a127ec69 spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
Carl Byington <carl@five-ten-sg.com>
parents: 415
diff changeset
449 c++;
91f2a127ec69 spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
Carl Byington <carl@five-ten-sg.com>
parents: 415
diff changeset
450 }
414
d5a1ed33d3ae spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
Carl Byington <carl@five-ten-sg.com>
parents: 410
diff changeset
451 }
d5a1ed33d3ae spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
Carl Byington <carl@five-ten-sg.com>
parents: 410
diff changeset
452 }
d5a1ed33d3ae spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
Carl Byington <carl@five-ten-sg.com>
parents: 410
diff changeset
453 }
d5a1ed33d3ae spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
Carl Byington <carl@five-ten-sg.com>
parents: 410
diff changeset
454 *my_answer = '\0'; // final trailing null
d5a1ed33d3ae spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
Carl Byington <carl@five-ten-sg.com>
parents: 410
diff changeset
455 ret_address = htonl(c);
d5a1ed33d3ae spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
Carl Byington <carl@five-ten-sg.com>
parents: 410
diff changeset
456 }
d5a1ed33d3ae spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
Carl Byington <carl@five-ten-sg.com>
parents: 410
diff changeset
457 if ((qtype == ns_t_txt) && (my_answer) && (my_size > 7)) {
d5a1ed33d3ae spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
Carl Byington <carl@five-ten-sg.com>
parents: 410
diff changeset
458 my_answer[0] = '\0'; // return null string if there are no txt answers
d5a1ed33d3ae spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
Carl Byington <carl@five-ten-sg.com>
parents: 410
diff changeset
459 my_size--; // allow room for terminating null;
381
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
460 while (ns_parserr(&handle, ns_s_an, rrnum++, &rr) == 0) {
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
461 if (ns_rr_type(rr) == qtype) {
384
7b7066a51c33 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 382
diff changeset
462 size_t offset = 0;
381
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
463 size_t rdlen = ns_rr_rdlen(rr);
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
464 const unsigned char *rdata = ns_rr_rdata(rr);
390
bcef093b1ba6 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 389
diff changeset
465 #ifdef RESOLVER_DEBUG
385
be7355b47051 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 384
diff changeset
466 char text[1000];
be7355b47051 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 384
diff changeset
467 snprintf(text, sizeof(text), "found txt record rdlen = %d", rdlen);
be7355b47051 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 384
diff changeset
468 my_syslog(text);
390
bcef093b1ba6 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 389
diff changeset
469 #endif
414
d5a1ed33d3ae spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
Carl Byington <carl@five-ten-sg.com>
parents: 410
diff changeset
470 while ((offset < my_size) && rdlen) {
381
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
471 size_t slen = size_t(*(rdata++));
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
472 rdlen--;
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
473 size_t m = min(slen, rdlen);
414
d5a1ed33d3ae spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
Carl Byington <carl@five-ten-sg.com>
parents: 410
diff changeset
474 m = min(m, my_size-offset);
d5a1ed33d3ae spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
Carl Byington <carl@five-ten-sg.com>
parents: 410
diff changeset
475 memcpy(my_answer+offset, rdata, m);
381
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
476 offset += m;
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
477 rdata += m;
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
478 rdlen -= m;
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
479 }
414
d5a1ed33d3ae spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
Carl Byington <carl@five-ten-sg.com>
parents: 410
diff changeset
480 my_answer[offset] = '\0'; // trailing null
390
bcef093b1ba6 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 389
diff changeset
481 #ifdef RESOLVER_DEBUG
414
d5a1ed33d3ae spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
Carl Byington <carl@five-ten-sg.com>
parents: 410
diff changeset
482 snprintf(text, sizeof(text), "found txt record %s", my_answer);
385
be7355b47051 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 384
diff changeset
483 my_syslog(text);
390
bcef093b1ba6 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 389
diff changeset
484 #endif
414
d5a1ed33d3ae spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
Carl Byington <carl@five-ten-sg.com>
parents: 410
diff changeset
485 if (strncasecmp(my_answer, "v=spf1 ", 7) == 0) break;
381
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
486 }
382
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
487 }
414
d5a1ed33d3ae spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
Carl Byington <carl@five-ten-sg.com>
parents: 410
diff changeset
488 if (strncasecmp(my_answer, "v=spf1 ", 7) != 0) {
d5a1ed33d3ae spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
Carl Byington <carl@five-ten-sg.com>
parents: 410
diff changeset
489 my_answer[0] = '\0'; // return null string if there are no spf1 txt answers
390
bcef093b1ba6 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 389
diff changeset
490 }
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
491 }
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
492 }
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
493 pthread_mutex_unlock(&resolve_mutex);
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
494 #ifdef RESOLVER_DEBUG
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
495 snprintf(text, sizeof(text), "dns_interface() found ip %d", ret_address);
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
496 my_syslog(text);
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
497 #endif
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
498 return ret_address;
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
499 #else
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
500 return glom.answer;
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
501 #endif
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
502 }
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
503
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
504
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
505 ////////////////////////////////////////////////
270
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
506 // lookup a hostname on the uribl
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
507 //
270
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
508 // if we find hostname on the uribl, return true and point found to hostname
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
509 // as a string registered in hosts.
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
510 // otherwise, return false and preserve the value of found.
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
511 //
270
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
512 bool uriblookup(mlfiPriv &priv, string_set &hosts, const char *hostname, const char *&found) ;
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
513 bool uriblookup(mlfiPriv &priv, string_set &hosts, const char *hostname, const char *&found) {
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
514 char buf[maxlen];
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
515 snprintf(buf, sizeof(buf), "%s.%s.", hostname, priv.uribl_suffix);
381
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
516 uint32_t ip = ntohl(dns_interface(priv, buf, ns_t_a));
270
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
517 if (ip and (ip != 0x7f000000)) {
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
518 if (debug_syslog > 2) {
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
519 char tmp[maxlen];
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
520 snprintf(tmp, sizeof(tmp), "found %s on %s", hostname, priv.uribl_suffix);
451
f2bc221240e8 add unsigned_black for enforcement of dmarc policy
Carl Byington <carl@five-ten-sg.com>
parents: 443
diff changeset
521 my_syslog(&priv, tmp);
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
522 }
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
523 found = register_string(hosts, hostname);
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
524 return true;
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
525 }
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
526 return false;
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
527 }
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
528
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
529
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
530 ////////////////////////////////////////////////
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
531 // uribl checker
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
532 // -------------
270
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Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
533 // hostname MUST not have a trailing dot. Find the tld part of
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
534 // the hostname, and add one more level. If that is listed on
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
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parents: 268
diff changeset
535 // the uribl, return true and point found to the part of the
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
536 // hostname that we found as a string registered in hosts.
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
537 // Otherwise, return false and preserve the value of found.
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
538 //
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
539 bool check_uribl(mlfiPriv &priv, string_set &hosts, const char *hostname, const char *&found) ;
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
540 bool check_uribl(mlfiPriv &priv, string_set &hosts, const char *hostname, const char *&found) {
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
541 in_addr ip;
270
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
542 if (inet_aton(hostname, &ip)) return false; // don't check ip addresses in uribls
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
543 const char* components[maxlen];
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
544 int n = 0; // number of components in the hostname
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
545 while (n < maxlen) {
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
546 components[n++] = hostname;
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
547 const char *c = strchr(hostname, '.');
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
548 if (!c) break;
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
549 hostname = c+1;
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
550 }
270
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
551 string_set *tlds = priv.memory->get_tlds();
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
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parents: 268
diff changeset
552 string_set *tldwilds = priv.memory->get_tldwilds();
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
553 string_set *tldnots = priv.memory->get_tldnots();
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
554 string_set::iterator xtlds = tlds->end();
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
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parents: 268
diff changeset
555 string_set::iterator xtldwilds = tldwilds->end();
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
556 string_set::iterator xtldnots = tldnots->end();
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
557 for (int i=max(0,n-4); i<n; i++) {
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
558 const char* name = components[i];
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
559 bool rc = false;
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
560 string_set::iterator tt = tldnots->find(name);
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
561 if (tt != xtldnots) {
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
562 rc = true;
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
563 }
270
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
564 else {
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
565 tt = tldwilds->find(name);
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
566 if (tt != xtldwilds) {
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
567 if (i > 1) {
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
568 rc = true;
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
569 name = components[i-2];
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
570 }
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
571 else return false;
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
572 }
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
573 else {
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
574 tt = tlds->find(name);
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
575 if (tt != xtlds) {
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
576 if (i > 0) {
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
577 rc = true;
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
578 name = components[i-1];
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
579 }
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
580 else return false;
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
581 }
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
582 }
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
583 }
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
584 if (rc) {
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
585 return uriblookup(priv, hosts, name, found);
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
586 }
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
587 }
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
588 return false;
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
589 }
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
590
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
591
94
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carl
parents: 92
diff changeset
592 mlfiPriv::mlfiPriv() {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
593 pthread_mutex_lock(&config_mutex);
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carl
parents: 191
diff changeset
594 pc = config;
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carl
parents: 191
diff changeset
595 pc->reference_count++;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
596 pthread_mutex_unlock(&config_mutex);
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carl
parents: 191
diff changeset
597 get_fd();
230
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
598 ctx = NULL;
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
599 eom = false;
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
600 ip = 0;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
601 helo = NULL;
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
602 mailaddr = NULL;
350
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
603 origaddr = NULL;
321
e172dc10fe24 add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 311
diff changeset
604 fromaddr = NULL;
e172dc10fe24 add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 311
diff changeset
605 header_count = 0;
322
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
606 dkim_ok = true;
230
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
607 queueid = NULL;
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
608 authenticated = NULL;
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
609 client_name = NULL;
257
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Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
610 client_dns_name = NULL;
268
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
611 client_dns_forged = false;
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
612 host_uribl = NULL;
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
613 helo_uribl = false;
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
614 client_uribl = false;
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
615 from_uribl = false;
230
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
616 have_whites = false;
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
617 only_whites = true;
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
618 want_spamassassin = false;
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
619 want_dccgrey = false;
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
620 want_dccbulk = false;
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
621 allow_autowhitelisting = true;
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
622 content_context = NULL;
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
623 memory = NULL;
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
624 scanner = NULL;
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
625 content_suffix = NULL;
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
626 content_message = NULL;
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
627 uribl_suffix = NULL;
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
628 uribl_message = NULL;
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
629 content_host_ignore = NULL;
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
630 assassin = NULL;
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
631 dccifd = NULL;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
632 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
633
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
634 mlfiPriv::~mlfiPriv() {
192
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carl
parents: 191
diff changeset
635 return_fd();
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carl
parents: 191
diff changeset
636 pthread_mutex_lock(&config_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
637 pc->reference_count--;
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carl
parents: 191
diff changeset
638 bool last = (!pc->reference_count) && (pc != config);
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carl
parents: 191
diff changeset
639 pthread_mutex_unlock(&config_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
640 if (last) delete pc; // free this config, since we were the last reference to it
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
641 if (helo) free((void*)helo);
192
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carl
parents: 191
diff changeset
642 reset(true);
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
643 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
644
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
645 void mlfiPriv::reset(bool final) {
194
688ec12a3c0c delay autowhitelisting to avoid out of office reply bots
carl
parents: 193
diff changeset
646 while (!delayer.empty()) {
231
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
647 DELAYWHITEP dwp = delayer.front();
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
648 const char *loto = dwp->get_loto();
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
649 if (loto) free((void*)loto);
193
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carl
parents: 192
diff changeset
650 delete dwp;
3ea79ef741a0 delay autowhitelisting to avoid out of office reply bots
carl
parents: 192
diff changeset
651 delayer.pop_front();
3ea79ef741a0 delay autowhitelisting to avoid out of office reply bots
carl
parents: 192
diff changeset
652 }
257
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
653 if (mailaddr) free((void*)mailaddr);
350
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
654 if (origaddr) free((void*)origaddr);
321
e172dc10fe24 add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 311
diff changeset
655 if (fromaddr) free((void*)fromaddr);
257
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
656 if (queueid) free((void*)queueid);
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
657 if (authenticated) free((void*)authenticated);
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
658 if (client_name) free((void*)client_name);
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
659 if (client_dns_name) free((void*)client_dns_name);
326
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
660 discard(dkim_signers);
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
661 discard(hosts_uribl);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
662 delayer.clear();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
663 discard(env_to);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
664 if (memory) delete memory;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
665 if (scanner) delete scanner;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
666 if (assassin) delete assassin;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
667 if (dccifd) delete dccifd;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
668 if (!final) {
230
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
669 ctx = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
670 eom = false;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
671 mailaddr = NULL;
350
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
672 origaddr = NULL;
321
e172dc10fe24 add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 311
diff changeset
673 fromaddr = NULL;
e172dc10fe24 add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 311
diff changeset
674 header_count = 0;
322
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
675 dkim_ok = true;
230
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
676 queueid = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
677 authenticated = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
678 client_name = NULL;
257
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
679 client_dns_name = NULL;
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
680 host_uribl = NULL;
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
681 helo_uribl = false;
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
682 client_uribl = false;
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
683 from_uribl = false;
230
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
684 have_whites = false;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
685 only_whites = true;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
686 want_spamassassin = false;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
687 want_dccgrey = false;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
688 want_dccbulk = false;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
689 allow_autowhitelisting = true;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
690 content_context = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
691 memory = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
692 scanner = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
693 content_suffix = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
694 content_message = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
695 uribl_suffix = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
696 uribl_message = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
697 content_host_ignore = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
698 assassin = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
699 dccifd = NULL;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
700 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
701 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
702
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
703 void mlfiPriv::get_fd() {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
704 err = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
705 fd = NULL_SOCKET;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
706 int result = pthread_mutex_lock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
707 if (!result) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
708 std::set<int>::iterator i;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
709 i = fd_pool.begin();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
710 if (i != fd_pool.end()) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
711 // have at least one fd in the pool
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
712 err = false;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
713 fd = *i;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
714 fd_pool.erase(fd);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
715 resolver_pool_size--;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
716 pthread_mutex_unlock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
717 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
718 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
719 // pool is empty, get a new fd
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
720 pthread_mutex_unlock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
721 fd = my_connect();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
722 err = (fd == NULL_SOCKET);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
723 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
724 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
725 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
726 // cannot lock the pool, just get a new fd
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
727 fd = my_connect();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
728 err = (fd == NULL_SOCKET);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
729 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
730 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
731
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
732 void mlfiPriv::return_fd() {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
733 if (err) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
734 // this fd got a socket error, so close it, rather than returning it to the pool
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
735 my_disconnect(fd);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
736 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
737 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
738 int result = pthread_mutex_lock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
739 if (!result) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
740 if ((resolver_sock_count > resolver_pool_size*5) || (resolver_pool_size < 5)) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
741 // return the fd to the pool
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
742 fd_pool.insert(fd);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
743 resolver_pool_size++;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
744 pthread_mutex_unlock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
745 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
746 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
747 // more than 20% of the open resolver sockets are in the pool, and the
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
748 // pool as at least 5 sockets. that is enough, so just close this one.
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
749 pthread_mutex_unlock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
750 my_disconnect(fd);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
751 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
752 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
753 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
754 // could not lock the pool, so just close the fd
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
755 my_disconnect(fd);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
756 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
757 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
758 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
759
177
a4d313c2460b start embedded dcc filtering
carl
parents: 174
diff changeset
760 size_t mlfiPriv::my_write(const char *buf, size_t len) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
761 if (err) return 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
762 size_t rs = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
763 while (len) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
764 size_t ws = write(fd, buf, len);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
765 if (ws > 0) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
766 rs += ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
767 len -= ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
768 buf += ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
769 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
770 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
771 // peer closed the socket!
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
772 rs = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
773 err = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
774 break;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
775 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
776 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
777 return rs;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
778 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
779
177
a4d313c2460b start embedded dcc filtering
carl
parents: 174
diff changeset
780 size_t mlfiPriv::my_read(char *buf, size_t len) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
781 if (err) return 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
782 size_t rs = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
783 while (len) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
784 size_t ws = read(fd, buf, len);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
785 if (ws > 0) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
786 rs += ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
787 len -= ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
788 buf += ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
789 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
790 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
791 // peer closed the socket!
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
792 rs = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
793 err = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
794 break;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
795 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
796 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
797 return rs;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
798 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
799
377
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
800 const char *mlfiPriv::check_uribl_signers() {
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
801 if (uribl_suffix) {
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
802 for (string_set::iterator s=dkim_signers.begin(); s!=dkim_signers.end(); s++) {
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
803 if (check_uribl(*this, hosts_uribl, *s, host_uribl)) return host_uribl;
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
804 }
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
805 }
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
806 return NULL;
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
807 }
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
808
350
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
809 void mlfiPriv::need_content_filter(CONTEXT &con) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
810 if (!memory) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
811 // first recipient that needs content filtering sets
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
812 // some of the content filtering parameters
270
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
813 memory = new recorder(this, con.get_html_tags(), con.get_content_tlds(), con.get_content_tldwilds(), con.get_content_tldnots());
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
814 scanner = new url_scanner(memory);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
815 content_suffix = con.get_content_suffix();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
816 content_message = con.get_content_message();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
817 uribl_suffix = con.get_uribl_suffix();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
818 uribl_message = con.get_uribl_message();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
819 content_host_ignore = &con.get_content_host_ignore();
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
820 // if we are using uribl, test helo and client names here
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
821 if (uribl_suffix) {
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
822 if (helo) {
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
823 helo_uribl = check_uribl(*this, hosts_uribl, helo, host_uribl);
257
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
824 }
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
825 if (client_dns_name && !helo_uribl) {
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
826 client_uribl = check_uribl(*this, hosts_uribl, client_dns_name, host_uribl);
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
827 }
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
828 if (mailaddr && !client_uribl) {
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
829 const char *f = strchr(mailaddr, '@');
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
830 if (f) from_uribl = check_uribl(*this, hosts_uribl, f+1, host_uribl);
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
831 }
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
832 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
833 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
834 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
835
186
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
836
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
837 mlfiPriv* fetch_priv_from_ctx(SMFICTX *ctx);
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
838 mlfiPriv* fetch_priv_from_ctx(SMFICTX *ctx)
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
839 {
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
840 mlfiPriv *priv = (struct mlfiPriv *)smfi_getpriv(ctx);
187
f0eda59e8afd fix null pointer dereference from missing HELO command
carl
parents: 186
diff changeset
841 priv->ctx = ctx;
186
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
842 return priv;
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
843 }
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
844 #define MLFIPRIV fetch_priv_from_ctx(ctx)
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
845
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
846
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
847
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
848 ////////////////////////////////////////////////
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
849 // syslog a message
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
850 //
310
802e2b779ed1 enable smtp verify logging
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
851 void my_syslog(const char *queueid, const char *text) {
436
7b072e16bd69 fix syslog for long messages, supress dkim checks for mail from localhost
Carl Byington <carl@five-ten-sg.com>
parents: 432
diff changeset
852 const char* noqueue = "NOQUEUE";
7b072e16bd69 fix syslog for long messages, supress dkim checks for mail from localhost
Carl Byington <carl@five-ten-sg.com>
parents: 432
diff changeset
853 if (!queueid || !queueid[0]) queueid = noqueue;
7b072e16bd69 fix syslog for long messages, supress dkim checks for mail from localhost
Carl Byington <carl@five-ten-sg.com>
parents: 432
diff changeset
854
7b072e16bd69 fix syslog for long messages, supress dkim checks for mail from localhost
Carl Byington <carl@five-ten-sg.com>
parents: 432
diff changeset
855 const int syslogmaxlen = 400; // buffer size
7b072e16bd69 fix syslog for long messages, supress dkim checks for mail from localhost
Carl Byington <carl@five-ten-sg.com>
parents: 432
diff changeset
856 char buf[syslogmaxlen];
7b072e16bd69 fix syslog for long messages, supress dkim checks for mail from localhost
Carl Byington <carl@five-ten-sg.com>
parents: 432
diff changeset
857 snprintf(buf, sizeof(buf), "%s: ", queueid);
7b072e16bd69 fix syslog for long messages, supress dkim checks for mail from localhost
Carl Byington <carl@five-ten-sg.com>
parents: 432
diff changeset
858 size_t hdrlen = strlen(buf);
7b072e16bd69 fix syslog for long messages, supress dkim checks for mail from localhost
Carl Byington <carl@five-ten-sg.com>
parents: 432
diff changeset
859 const size_t maxsegment = syslogmaxlen - hdrlen - 1;
7b072e16bd69 fix syslog for long messages, supress dkim checks for mail from localhost
Carl Byington <carl@five-ten-sg.com>
parents: 432
diff changeset
860 size_t msglen = strlen(text);
7b072e16bd69 fix syslog for long messages, supress dkim checks for mail from localhost
Carl Byington <carl@five-ten-sg.com>
parents: 432
diff changeset
861 while (msglen > 0) {
310
802e2b779ed1 enable smtp verify logging
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
862 snprintf(buf, sizeof(buf), "%s: %s", queueid, text);
436
7b072e16bd69 fix syslog for long messages, supress dkim checks for mail from localhost
Carl Byington <carl@five-ten-sg.com>
parents: 432
diff changeset
863 if (use_syslog) {
7b072e16bd69 fix syslog for long messages, supress dkim checks for mail from localhost
Carl Byington <carl@five-ten-sg.com>
parents: 432
diff changeset
864 pthread_mutex_lock(&syslog_mutex);
7b072e16bd69 fix syslog for long messages, supress dkim checks for mail from localhost
Carl Byington <carl@five-ten-sg.com>
parents: 432
diff changeset
865 if (!syslog_opened) {
7b072e16bd69 fix syslog for long messages, supress dkim checks for mail from localhost
Carl Byington <carl@five-ten-sg.com>
parents: 432
diff changeset
866 openlog("dnsbl", LOG_PID, LOG_MAIL);
7b072e16bd69 fix syslog for long messages, supress dkim checks for mail from localhost
Carl Byington <carl@five-ten-sg.com>
parents: 432
diff changeset
867 syslog_opened = true;
7b072e16bd69 fix syslog for long messages, supress dkim checks for mail from localhost
Carl Byington <carl@five-ten-sg.com>
parents: 432
diff changeset
868 }
7b072e16bd69 fix syslog for long messages, supress dkim checks for mail from localhost
Carl Byington <carl@five-ten-sg.com>
parents: 432
diff changeset
869 syslog(LOG_NOTICE, "%s", buf);
7b072e16bd69 fix syslog for long messages, supress dkim checks for mail from localhost
Carl Byington <carl@five-ten-sg.com>
parents: 432
diff changeset
870 pthread_mutex_unlock(&syslog_mutex);
7b072e16bd69 fix syslog for long messages, supress dkim checks for mail from localhost
Carl Byington <carl@five-ten-sg.com>
parents: 432
diff changeset
871 }
7b072e16bd69 fix syslog for long messages, supress dkim checks for mail from localhost
Carl Byington <carl@five-ten-sg.com>
parents: 432
diff changeset
872 else {
7b072e16bd69 fix syslog for long messages, supress dkim checks for mail from localhost
Carl Byington <carl@five-ten-sg.com>
parents: 432
diff changeset
873 printf("%s \n", buf);
7b072e16bd69 fix syslog for long messages, supress dkim checks for mail from localhost
Carl Byington <carl@five-ten-sg.com>
parents: 432
diff changeset
874 }
7b072e16bd69 fix syslog for long messages, supress dkim checks for mail from localhost
Carl Byington <carl@five-ten-sg.com>
parents: 432
diff changeset
875 size_t segmentlen = min(msglen, maxsegment);
7b072e16bd69 fix syslog for long messages, supress dkim checks for mail from localhost
Carl Byington <carl@five-ten-sg.com>
parents: 432
diff changeset
876 text += segmentlen;
7b072e16bd69 fix syslog for long messages, supress dkim checks for mail from localhost
Carl Byington <carl@five-ten-sg.com>
parents: 432
diff changeset
877 msglen -= segmentlen;
7b072e16bd69 fix syslog for long messages, supress dkim checks for mail from localhost
Carl Byington <carl@five-ten-sg.com>
parents: 432
diff changeset
878 // assert(msglen == strlen(text))
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
879 }
436
7b072e16bd69 fix syslog for long messages, supress dkim checks for mail from localhost
Carl Byington <carl@five-ten-sg.com>
parents: 432
diff changeset
880
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
881 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
882
310
802e2b779ed1 enable smtp verify logging
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
883 void my_syslog(mlfiPriv *priv, const char *text) {
802e2b779ed1 enable smtp verify logging
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
884 if (priv) my_syslog(priv->queueid, text);
802e2b779ed1 enable smtp verify logging
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
885 else my_syslog((const char *)NULL, text);
802e2b779ed1 enable smtp verify logging
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
886 }
802e2b779ed1 enable smtp verify logging
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
887
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
888 void my_syslog(mlfiPriv *priv, const string text) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
889 if (debug_syslog > 3) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
890 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
891 strncpy(buf, text.c_str(), sizeof(buf));
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
892 buf[maxlen-1] = '\0'; // ensure null termination
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
893 my_syslog(priv, buf);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
894 }
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
895 }
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
896
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
897 void my_syslog(const char *text) {
310
802e2b779ed1 enable smtp verify logging
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
898 my_syslog((const char *)NULL, text);
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
899 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
900
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
901
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
902 ////////////////////////////////////////////////
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
903 // read a resolver request from the socket, process it, and
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
904 // write the result back to the socket.
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
905
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
906 void process_resolver_requests(int socket);
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
907 void process_resolver_requests(int socket) {
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
908 #ifdef NS_MAXDNAME
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
909 char question[NS_MAXDNAME];
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
910 #else
389
aa9795b407e8 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 388
diff changeset
911 char question[1025];
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
912 #endif
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
913 glommer glom;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
914
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
915 int maxq = sizeof(question);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
916 while (true) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
917 // read a question
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
918 int rs = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
919 while (rs < maxq) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
920 int ns = read(socket, question+rs, maxq-rs);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
921 if (ns > 0) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
922 rs += ns;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
923 if (question[rs-1] == '\0') {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
924 // last byte read was the null terminator, we are done
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
925 break;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
926 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
927 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
928 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
929 // peer closed the socket
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
930 #ifdef RESOLVER_DEBUG
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
931 my_syslog("process_resolver_requests() peer closed socket while reading question");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
932 #endif
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
933 shutdown(socket, SHUT_RDWR);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
934 close(socket);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
935 return;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
936 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
937 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
938 question[rs-1] = '\0'; // ensure null termination
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
939
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
940 // find the answer
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
941 #ifdef NS_PACKETSZ
388
2354a1944e49 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 387
diff changeset
942 int qt = int8_t(question[0]);
2354a1944e49 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 387
diff changeset
943 int res_result = res_query(question+1, ns_c_in, qt, glom.answer, sizeof(glom.answer));
390
bcef093b1ba6 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 389
diff changeset
944 #ifdef RESOLVER_DEBUG
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
945 char text[1000];
387
616e46e9b8f0 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 386
diff changeset
946 snprintf(text, sizeof(text), "process_resolver_requests() has a question %s qtype %d buf len %d result %d",
388
2354a1944e49 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 387
diff changeset
947 question+1, qt, sizeof(glom.answer), res_result);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
948 my_syslog(text);
390
bcef093b1ba6 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 389
diff changeset
949 #endif
223
da9e7f1c8160 fix unsigned signed compare, back to mixed -lresolv and libresolv.a with auto requires
Carl Byington <carl@five-ten-sg.com>
parents: 222
diff changeset
950 if (res_result < 0) glom.length = 0; // represent all errors as zero length answers
da9e7f1c8160 fix unsigned signed compare, back to mixed -lresolv and libresolv.a with auto requires
Carl Byington <carl@five-ten-sg.com>
parents: 222
diff changeset
951 else glom.length = (size_t)res_result;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
952 #else
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
953 glom.length = sizeof(glom.answer);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
954 glom.answer = 0;
382
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
955 int t = int8_t(question[0]);
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
956 if (t != ns_t_a) {
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
957 glom.length = 0;
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
958 }
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
959 else {
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
960 struct hostent *host = gethostbyname(question+1);
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
961 if (host && (host->h_addrtype == AF_INET)) {
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
962 memcpy(&glom.answer, host->h_addr, sizeof(glom.answer));
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
963 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
964 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
965 #endif
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
966
192
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carl
parents: 191
diff changeset
967 // write the answer
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
968 char *buf = (char *)&glom;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
969 int len = glom.length + sizeof(glom.length);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
970 #ifdef RESOLVER_DEBUG
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
971 snprintf(text, sizeof(text), "process_resolver_requests() writing answer length %d for total %d", glom.length, len);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
972 my_syslog(text);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
973 #endif
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
974 int ws = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
975 while (len > ws) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
976 int ns = write(socket, buf+ws, len-ws);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
977 if (ns > 0) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
978 ws += ns;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
979 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
980 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
981 // peer closed the socket!
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
982 #ifdef RESOLVER_DEBUG
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
983 my_syslog("process_resolver_requests() peer closed socket while writing answer");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
984 #endif
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
985 shutdown(socket, SHUT_RDWR);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
986 close(socket);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
987 return;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
988 }
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carl
parents: 191
diff changeset
989 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
990 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
991 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
992
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
993
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
994 ////////////////////////////////////////////////
252
836b7f2357f9 need ntohl() before using masks that are defined in host byte order
Carl Byington <carl@five-ten-sg.com>
parents: 249
diff changeset
995 // check a single dns list, return ip address in network byte order
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
996 //
382
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
997 uint32_t check_single(mlfiPriv &priv, uint32_t ip, const char *suffix);
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
998 uint32_t check_single(mlfiPriv &priv, uint32_t ip, const char *suffix) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
999 // make a dns question
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1000 const u_char *src = (const u_char *)&ip;
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1001 if (src[0] == 127) return 0; // don't do dns lookups on localhost
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1002 if (src[0] == 10) return 0; // don't do dns lookups on rfc1918 space
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1003 if ((src[0] == 192) && (src[1] == 168)) return 0;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1004 if ((src[0] == 172) && (16 <= src[1]) && (src[1] <= 31)) return 0;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1005 #ifdef NS_MAXDNAME
192
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carl
parents: 191
diff changeset
1006 char question[NS_MAXDNAME];
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1007 #else
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1008 char question[1000];
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1009 #endif
192
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carl
parents: 191
diff changeset
1010 snprintf(question, sizeof(question), "%u.%u.%u.%u.%s.", src[3], src[2], src[1], src[0], suffix);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1011 // ask the question, if we get an A record it implies a blacklisted ip address
381
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
1012 return dns_interface(priv, question, ns_t_a);
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1013 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1014
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1015
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1016 ////////////////////////////////////////////////
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1017 // check a single dnsbl
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1018 //
382
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
1019 bool check_single(mlfiPriv &priv, uint32_t ip, DNSBL &bl);
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
1020 bool check_single(mlfiPriv &priv, uint32_t ip, DNSBL &bl) {
192
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carl
parents: 191
diff changeset
1021 return check_single(priv, ip, bl.suffix);
94
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carl
parents: 92
diff changeset
1022 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1023
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1024
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1025 ////////////////////////////////////////////////
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1026 // check a single dnswl
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1027 //
382
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
1028 bool check_single(mlfiPriv &priv, uint32_t ip, DNSWL &wl);
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
1029 bool check_single(mlfiPriv &priv, uint32_t ip, DNSWL &wl) {
252
836b7f2357f9 need ntohl() before using masks that are defined in host byte order
Carl Byington <carl@five-ten-sg.com>
parents: 249
diff changeset
1030 uint32_t r = ntohl(check_single(priv, ip, wl.suffix));
836b7f2357f9 need ntohl() before using masks that are defined in host byte order
Carl Byington <carl@five-ten-sg.com>
parents: 249
diff changeset
1031 uint32_t v = (uint32_t)0x7f000000;
836b7f2357f9 need ntohl() before using masks that are defined in host byte order
Carl Byington <carl@five-ten-sg.com>
parents: 249
diff changeset
1032 uint32_t m = (uint32_t)0xffff0000;
836b7f2357f9 need ntohl() before using masks that are defined in host byte order
Carl Byington <carl@five-ten-sg.com>
parents: 249
diff changeset
1033 uint32_t m2 = (uint32_t)0x000000ff;
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1034 if ((r & m) == v) {
252
836b7f2357f9 need ntohl() before using masks that are defined in host byte order
Carl Byington <carl@five-ten-sg.com>
parents: 249
diff changeset
1035 uint32_t l = r & m2;
836b7f2357f9 need ntohl() before using masks that are defined in host byte order
Carl Byington <carl@five-ten-sg.com>
parents: 249
diff changeset
1036 if ((int)l >= wl.level) return true;
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1037 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1038 return false;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1039 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1040
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1041
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1042 ////////////////////////////////////////////////
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1043 // check the dnsbls specified for this recipient
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1044 //
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1045 bool check_dnsbl(mlfiPriv &priv, dnsblp_list &dnsbll, DNSBLP &rejectlist);
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1046 bool check_dnsbl(mlfiPriv &priv, dnsblp_list &dnsbll, DNSBLP &rejectlist) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1047 for (dnsblp_list::iterator i=dnsbll.begin(); i!=dnsbll.end(); i++) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1048 DNSBLP dp = *i; // non null by construction
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1049 bool st;
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1050 map<DNSBLP, bool>::iterator f = priv.checked_black.find(dp);
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1051 if (f == priv.checked_black.end()) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1052 // have not checked this list yet
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1053 st = check_single(priv, priv.ip, *dp);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1054 rejectlist = dp;
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1055 priv.checked_black[dp] = st;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1056 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1057 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1058 st = (*f).second;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1059 rejectlist = (*f).first;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1060 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1061 if (st) return st;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1062 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1063 return false;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1064 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1065
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1066
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1067 ////////////////////////////////////////////////
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1068 // check the dnswls specified for this recipient
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1069 //
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1070 bool check_dnswl(mlfiPriv &priv, dnswlp_list &dnswll, DNSWLP &acceptlist);
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1071 bool check_dnswl(mlfiPriv &priv, dnswlp_list &dnswll, DNSWLP &acceptlist) {
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1072 for (dnswlp_list::iterator i=dnswll.begin(); i!=dnswll.end(); i++) {
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1073 DNSWLP dp = *i; // non null by construction
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1074 bool st;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1075 map<DNSWLP, bool>::iterator f = priv.checked_white.find(dp);
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1076 if (f == priv.checked_white.end()) {
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1077 // have not checked this list yet
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1078 st = check_single(priv, priv.ip, *dp);
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1079 acceptlist = dp;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1080 priv.checked_white[dp] = st;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1081 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1082 else {
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1083 st = (*f).second;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1084 acceptlist = (*f).first;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1085 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1086 if (st) return st;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1087 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1088 return false;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1089 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1090
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1091
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1092 ////////////////////////////////////////////////
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1093 // check the hosts from the body against the content filter and uribl dnsbls
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1094 //
124
ea6f9c812faa put hostname in smtp message for uribl style lookups
carl
parents: 123
diff changeset
1095 //
382
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
1096 bool check_hosts(mlfiPriv &priv, bool random, int limit, const char *&msg, const char *&host, uint32_t &ip, const char *&found);
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
1097 bool check_hosts(mlfiPriv &priv, bool random, int limit, const char *&msg, const char *&host, uint32_t &ip, const char *&found) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1098 found = NULL; // normally ip address style
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1099 if (!priv.content_suffix && !priv.uribl_suffix) return false; // nothing to check
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carl
parents: 191
diff changeset
1100 string_set &hosts = priv.memory->get_hosts();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1101 string_set &ignore = *priv.content_host_ignore;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1102
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1103 int count = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1104 int cnt = hosts.size(); // number of hosts we could look at
382
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
1105 uint32_t_set ips;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1106 ns_map nameservers;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1107 for (string_set::iterator i=hosts.begin(); i!=hosts.end(); i++) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1108 host = *i; // a reference into hosts, which will live until this smtp transaction is closed
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1109
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1110 // don't bother looking up hosts on the ignore list
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1111 string_set::iterator j = ignore.find(host);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1112 if (j != ignore.end()) continue;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1113
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1114 // try to only look at limit/cnt fraction of the available cnt host names in random mode
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1115 if ((cnt > limit) && (limit > 0) && random) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1116 int r = rand() % cnt;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1117 if (r >= limit) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1118 if (debug_syslog > 2) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1119 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1120 snprintf(buf, sizeof(buf), "host %s skipped", host);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1121 my_syslog(&priv, buf);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1122 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1123 continue;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1124 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1125 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1126 count++;
381
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
1127 ip = dns_interface(priv, host, ns_t_a, true, &nameservers);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1128 if (debug_syslog > 2) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1129 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1130 if (ip) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1131 char adr[sizeof "255.255.255.255 "];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1132 adr[0] = '\0';
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1133 inet_ntop(AF_INET, (const u_char *)&ip, adr, sizeof(adr));
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1134 snprintf(buf, sizeof(buf), "host %s found at %s", host, adr);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1135 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1136 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1137 snprintf(buf, sizeof(buf), "host %s not found", host);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1138 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1139 my_syslog(&priv, buf);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1140 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1141 if (ip) {
382
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
1142 uint32_t_set::iterator i = ips.find(ip);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1143 if (i == ips.end()) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1144 // we haven't looked this up yet
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1145 ips.insert(ip);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1146 // check dnsbl style list
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1147 if (priv.content_suffix && check_single(priv, ip, priv.content_suffix)) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1148 msg = priv.content_message;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1149 return true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1150 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1151 // Check uribl & surbl style list
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1152 if (priv.uribl_suffix && check_uribl(priv, hosts, host, found)) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1153 msg = priv.uribl_message;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1154 return true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1155 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1156 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1157 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1158 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1159 limit *= 4; // allow average of 3 ns per host name
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1160 for (ns_mapper::iterator i=nameservers.ns_ip.begin(); i!=nameservers.ns_ip.end(); i++) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1161 count++;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1162 if ((count > limit) && (limit > 0)) return false; // too many name servers to check them all
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1163 host = (*i).first; // a transient reference that needs to be replaced before we return it
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1164 ip = (*i).second;
425
1b7a785610f5 hosts-ignore.conf can be used to ignore nameserver names
Carl Byington <carl@five-ten-sg.com>
parents: 419
diff changeset
1165
1b7a785610f5 hosts-ignore.conf can be used to ignore nameserver names
Carl Byington <carl@five-ten-sg.com>
parents: 419
diff changeset
1166 // don't bother looking up nameserver names on the ignore list
1b7a785610f5 hosts-ignore.conf can be used to ignore nameserver names
Carl Byington <carl@five-ten-sg.com>
parents: 419
diff changeset
1167 string_set::iterator j = ignore.find(host);
1b7a785610f5 hosts-ignore.conf can be used to ignore nameserver names
Carl Byington <carl@five-ten-sg.com>
parents: 419
diff changeset
1168 if (j != ignore.end()) continue;
1b7a785610f5 hosts-ignore.conf can be used to ignore nameserver names
Carl Byington <carl@five-ten-sg.com>
parents: 419
diff changeset
1169
381
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
1170 if (!ip) ip = dns_interface(priv, host, ns_t_a);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1171 if (debug_syslog > 2) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1172 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1173 if (ip) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1174 char adr[sizeof "255.255.255.255 "];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1175 adr[0] = '\0';
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1176 inet_ntop(AF_INET, (const u_char *)&ip, adr, sizeof(adr));
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1177 snprintf(buf, sizeof(buf), "ns %s found at %s", host, adr);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1178 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1179 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1180 snprintf(buf, sizeof(buf), "ns %s not found", host);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1181 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1182 my_syslog(&priv, buf);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1183 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1184 if (ip) {
382
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
1185 uint32_t_set::iterator i = ips.find(ip);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1186 if (i == ips.end()) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1187 ips.insert(ip);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1188 if (check_single(priv, ip, priv.content_suffix)) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1189 msg = priv.content_message;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1190 string_map::iterator j = nameservers.ns_host.find(host);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1191 if (j != nameservers.ns_host.end()) {
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1192 const char *refer = (*j).second;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1193 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1194 snprintf(buf, sizeof(buf), "%s with nameserver %s", refer, host);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1195 host = register_string(hosts, buf); // put a copy into hosts, and return that reference
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1196 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1197 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1198 host = register_string(hosts, host); // put a copy into hosts, and return that reference
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1199 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1200 return true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1201 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1202 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1203 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1204 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1205 return false;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1206 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1207
127
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 126
diff changeset
1208
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1209 ////////////////////////////////////////////////
127
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 126
diff changeset
1210 //
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 126
diff changeset
1211 // this email address is passed in from sendmail, and will normally be
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1212 // enclosed in <>. I think older versions of sendmail supplied the <>
127
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 126
diff changeset
1213 // wrapper if the mail client did not, but the current version does not do
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 126
diff changeset
1214 // that. So the <> wrapper is now optional. It may have mixed case, just
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1215 // as the mail client sent it. We dup the string and convert the duplicate
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1216 // to lower case. Some clients enclose the entire address in single quotes,
246
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1217 // so we strip those as well. We also remove the SRS and prvs coding.
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1218 //
346
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1219 const char *to_lower_string(const char *email, bool srs = true);
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1220 const char *to_lower_string(const char *email, bool srs) {
266
582cfb9c4031 fix unauthenticated rate limit bug for empty mail from
Carl Byington <carl@five-ten-sg.com>
parents: 263
diff changeset
1221 if (!email) return strdup("<>");
328
b4f766947202 allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 327
diff changeset
1222 size_t n = strlen(email);
b4f766947202 allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 327
diff changeset
1223 if ((n > 1) && (email[0] == '<') && (email[n-1] == '>')) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1224 n -= 2;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1225 email++;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1226 }
328
b4f766947202 allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 327
diff changeset
1227 if ((n > 1) && (email[0] == '\'') && (email[n-1] == '\'')) {
b4f766947202 allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 327
diff changeset
1228 n -= 2;
b4f766947202 allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 327
diff changeset
1229 email++;
b4f766947202 allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 327
diff changeset
1230 }
352
f5a6740cabee need to lowercase the domain extracted from the from header so it will match the keys in dkim_from
Carl Byington <carl@five-ten-sg.com>
parents: 350
diff changeset
1231 if (n == 0) return strdup("<>");
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1232 char *key = strdup(email);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1233 key[n] = '\0';
331
9800776436b9 allow dkim whitelisting to override uribl hosts in the mail body
Carl Byington <carl@five-ten-sg.com>
parents: 330
diff changeset
1234 for (size_t i=0; i<n; i++) key[i] = tolower(key[i]);
346
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1235
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1236 if (srs) {
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1237 if ((n > 14) && (strncmp(key, "srs", 3) == 0)) {
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1238 // might have srs coding to be removed
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1239 const int nmatch = 7;
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1240 regmatch_t match[nmatch];
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1241 if (0 == regexec(&srs_pattern, key, nmatch, match, 0)) {
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1242 int s4 = match[5].rm_so; // domain
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1243 int e4 = match[5].rm_eo;
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1244 int s5 = match[6].rm_so; // user
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1245 int e5 = match[6].rm_eo;
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1246 if ((s4 != -1) && (s5 != -1)) {
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1247 char *newkey = strdup(key); // large enough
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1248 key[e4] = '\0';
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1249 key[e5] = '\0';
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1250 strcpy(newkey, key+s5); // user
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1251 strcat(newkey, "@"); // @
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1252 strcat(newkey, key+s4); // domain
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1253 free(key);
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1254 key = newkey;
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1255 }
235
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1256 }
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1257 }
346
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1258 if ((n > 7) && (strncmp(key, "prvs", 4) == 0)) {
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1259 // might have prvs coding to be removed
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1260 const int nmatch = 3;
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1261 regmatch_t match[nmatch];
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1262 if (0 == regexec(&prvs_pattern, key, nmatch, match, 0)) {
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1263 int s2 = match[2].rm_so; // user@domain
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1264 if (s2 != -1) {
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1265 char *newkey = strdup(key+s2); // user@domain
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1266 free(key);
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1267 key = newkey;
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1268 }
246
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1269 }
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1270 }
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1271 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1272 return key;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1273 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1274
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1275
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1276 ////////////////////////////////////////////////
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1277 // start of sendmail milter interfaces
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1278 //
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1279 sfsistat mlfi_connect(SMFICTX *ctx, char *hostname, _SOCK_ADDR *hostaddr)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1280 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1281 // allocate some private memory
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1282 mlfiPriv *priv = new mlfiPriv;
286
9bd5388bf469 Fix possible segfault in mlfi_connect, hostaddr might be null
Carl Byington <carl@five-ten-sg.com>
parents: 284
diff changeset
1283 if (hostaddr && (hostaddr->sa_family == AF_INET)) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1284 priv->ip = ((struct sockaddr_in *)hostaddr)->sin_addr.s_addr;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1285 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1286 // save the private data
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1287 smfi_setpriv(ctx, (void*)priv);
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1288
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1289 // continue processing
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1290 return SMFIS_CONTINUE;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1291 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1292
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1293 sfsistat mlfi_helo(SMFICTX * ctx, char *helohost)
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1294 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1295 mlfiPriv &priv = *MLFIPRIV;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1296 priv.helo = strdup(helohost);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1297 return SMFIS_CONTINUE;
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1298 }
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1299
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1300 sfsistat mlfi_envfrom(SMFICTX *ctx, char **from)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1301 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1302 mlfiPriv &priv = *MLFIPRIV;
278
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 272
diff changeset
1303 CONFIG &dc = *priv.pc;
350
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
1304 priv.origaddr = to_lower_string(from[0], false);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1305 priv.mailaddr = to_lower_string(from[0]);
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1306 priv.queueid = strdup(smfi_getsymval(ctx, (char*)"i"));
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1307 priv.authenticated = smfi_getsymval(ctx, (char*)"{auth_authen}");
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1308 priv.client_name = smfi_getsymval(ctx, (char*)"_");
191
2a67d31099c3 fix null pointer dereference from missing HELO command
carl
parents: 190
diff changeset
1309 if (!priv.helo) priv.helo = strdup("unknown");
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1310 if (priv.authenticated) priv.authenticated = strdup(priv.authenticated);
257
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
1311 if (priv.client_name) {
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
1312 priv.client_name = strdup(priv.client_name);
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
1313 const char *p = strstr(priv.client_name, " [");
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
1314 if (p) {
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
1315 uint pp = p - priv.client_name;
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
1316 priv.client_dns_name = strdup(priv.client_name);
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
1317 priv.client_dns_name[pp] = '\0';
259
be939802c64e add recipient rate limits by email from address or domain
Carl Byington <carl@five-ten-sg.com>
parents: 257
diff changeset
1318 //char text[500];
be939802c64e add recipient rate limits by email from address or domain
Carl Byington <carl@five-ten-sg.com>
parents: 257
diff changeset
1319 //snprintf(text, sizeof(text), "found simple dns client name %s", priv.client_dns_name);
be939802c64e add recipient rate limits by email from address or domain
Carl Byington <carl@five-ten-sg.com>
parents: 257
diff changeset
1320 //my_syslog(text);
257
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
1321 }
268
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1322 p = strstr(priv.client_name, "] (may be forged)");
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1323 if (p) {
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1324 priv.client_dns_forged = true;
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1325 if (priv.client_dns_name) {
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1326 char text[500];
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1327 snprintf(text, sizeof(text), "forged dns client name %s", priv.client_dns_name);
438
1686cb639269 code cleanup
Carl Byington <carl@five-ten-sg.com>
parents: 436
diff changeset
1328 my_syslog(&priv, text);
268
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1329 }
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1330 }
257
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
1331 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1332 if (spamc != spamc_empty) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1333 priv.assassin = new SpamAssassin(&priv, priv.ip, priv.helo, priv.mailaddr, priv.queueid);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1334 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1335 if (dccifd_port) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1336 priv.dccifd = new DccInterface(dccifd_port, &priv, priv.ip, priv.helo, priv.mailaddr);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1337 }
290
bb69fdc3acaa Unique ip connection limits only apply to authenticated connections
Carl Byington <carl@five-ten-sg.com>
parents: 286
diff changeset
1338 if (priv.authenticated) {
284
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 282
diff changeset
1339 int hourly, daily;
290
bb69fdc3acaa Unique ip connection limits only apply to authenticated connections
Carl Byington <carl@five-ten-sg.com>
parents: 286
diff changeset
1340 add_auth_address(priv.authenticated, hourly, daily, priv.ip);
bb69fdc3acaa Unique ip connection limits only apply to authenticated connections
Carl Byington <carl@five-ten-sg.com>
parents: 286
diff changeset
1341 int h_limit = dc.default_context->find_address_limit(priv.authenticated);
284
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 282
diff changeset
1342 int d_limit = dc.default_context->get_daily_address_multiple() * h_limit;
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 282
diff changeset
1343 if (debug_syslog > 1) {
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 282
diff changeset
1344 char msg[maxlen];
290
bb69fdc3acaa Unique ip connection limits only apply to authenticated connections
Carl Byington <carl@five-ten-sg.com>
parents: 286
diff changeset
1345 snprintf(msg, sizeof(msg), "connect for %s (%d %d addresses, %d %d limits)", priv.authenticated, hourly, daily, h_limit, d_limit);
284
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 282
diff changeset
1346 my_syslog(&priv, msg);
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 282
diff changeset
1347 }
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 282
diff changeset
1348 if ((hourly > h_limit) || (daily > d_limit)){
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 282
diff changeset
1349 smfi_setreply(ctx, (char*)"550", (char*)"5.7.1", (char*)"unique connection ip address limit exceeded");
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 282
diff changeset
1350 return SMFIS_REJECT;
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 282
diff changeset
1351 }
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 282
diff changeset
1352 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1353 return SMFIS_CONTINUE;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1354 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1355
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1356 sfsistat mlfi_envrcpt(SMFICTX *ctx, char **rcpt)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1357 {
278
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 272
diff changeset
1358 DNSBLP rejectlist = NULL; // list that caused the reject
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 272
diff changeset
1359 mlfiPriv &priv = *MLFIPRIV;
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 272
diff changeset
1360 CONFIG &dc = *priv.pc;
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 272
diff changeset
1361 const char *rcptaddr = rcpt[0];
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 272
diff changeset
1362 const char *loto = to_lower_string(rcptaddr);
342
6d27b4f45799 allow envelope from whitelisting without dkim override for mail from localhost, or where the from address is root@*
Carl Byington <carl@five-ten-sg.com>
parents: 340
diff changeset
1363 bool self = (strcmp(loto, priv.mailaddr) == 0);
6d27b4f45799 allow envelope from whitelisting without dkim override for mail from localhost, or where the from address is root@*
Carl Byington <carl@five-ten-sg.com>
parents: 340
diff changeset
1364 const u_char *src = (const u_char *)&priv.ip;
6d27b4f45799 allow envelope from whitelisting without dkim override for mail from localhost, or where the from address is root@*
Carl Byington <carl@five-ten-sg.com>
parents: 340
diff changeset
1365 bool local_source = (src[0] == 127);
6d27b4f45799 allow envelope from whitelisting without dkim override for mail from localhost, or where the from address is root@*
Carl Byington <carl@five-ten-sg.com>
parents: 340
diff changeset
1366 bool from_root = (strncasecmp(priv.mailaddr, "root@", 5) == 0);
174
da0c41b9f672 don't whitelist addresses with embedded spaces
carl
parents: 173
diff changeset
1367
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1368 // some version of sendmail allowed rcpt to:<> and passed it thru to the milters
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1369 if (strcmp(loto, "<>") == 0) {
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1370 smfi_setreply(ctx, (char*)"550", (char*)"5.7.1", (char*)"bogus recipient");
286
9bd5388bf469 Fix possible segfault in mlfi_connect, hostaddr might be null
Carl Byington <carl@five-ten-sg.com>
parents: 284
diff changeset
1371 free((void*)loto); // cppcheck static analysis found memory leak
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1372 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1373 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1374 // priv.mailaddr sending original message to loto
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1375 CONTEXT &con = *(dc.find_context(loto)->find_context(priv.mailaddr));
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1376 VERIFYP ver = con.find_verify(loto);
233
5c3e9bf45bb5 Add whitelisting by regex expression filtering.
Carl Byington <carl@five-ten-sg.com>
parents: 231
diff changeset
1377 const char *fromvalue = con.find_from(priv.mailaddr, true, priv.queueid);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1378 // tell spam assassin and dccifd about this recipient
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1379 if (priv.assassin) priv.assassin->mlfi_envrcpt(ctx, loto);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1380 if (priv.dccifd) priv.dccifd->mlfi_envrcpt(ctx, loto, con.get_grey() && !priv.authenticated);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1381 // loto sending a reply back to priv.mailaddr
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1382 CONTEXT &con2 = *(dc.find_context(priv.mailaddr)->find_context(loto));
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1383 const char *replyvalue = con2.find_from(loto);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1384 if (debug_syslog > 1) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1385 char buf[maxlen];
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1386 char buf2[maxlen];
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1387 char msg[maxlen];
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1388 snprintf(msg, sizeof(msg), "from <%s> to <%s> using context %s state %s reply context %s state %s", priv.mailaddr, loto, con.get_full_name(buf,maxlen), fromvalue, con2.get_full_name(buf2,maxlen), replyvalue);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1389 my_syslog(&priv, msg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1390 }
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1391 free((void*)loto);
340
be776a246f97 when dkim require_signed overrides envelope from whitelisting, we still want to check dns based white/blacklists before content filtering
Carl Byington <carl@five-ten-sg.com>
parents: 338
diff changeset
1392 status st = oksofar;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1393 if (replyvalue == token_black) {
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1394 smfi_setreply(ctx, (char*)"550", (char*)"5.7.1", (char*)"recipient can not reply due to blacklisting");
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1395 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1396 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1397 if (priv.authenticated) {
255
d6d5c50b9278 Allow dnswl_list and dnsbl_list to be empty, to override lists specified in the ancestor contexts. Add daily recipient limits as a multiple of the hourly limits.
Carl Byington <carl@five-ten-sg.com>
parents: 252
diff changeset
1398 int hourly, daily;
d6d5c50b9278 Allow dnswl_list and dnsbl_list to be empty, to override lists specified in the ancestor contexts. Add daily recipient limits as a multiple of the hourly limits.
Carl Byington <carl@five-ten-sg.com>
parents: 252
diff changeset
1399 incr_rcpt_count(priv.authenticated, hourly, daily);
278
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 272
diff changeset
1400 int h_limit = dc.default_context->find_rate_limit(priv.authenticated);
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 272
diff changeset
1401 int d_limit = dc.default_context->get_daily_rate_multiple() * h_limit;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1402 if (debug_syslog > 1) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1403 char msg[maxlen];
255
d6d5c50b9278 Allow dnswl_list and dnsbl_list to be empty, to override lists specified in the ancestor contexts. Add daily recipient limits as a multiple of the hourly limits.
Carl Byington <carl@five-ten-sg.com>
parents: 252
diff changeset
1404 snprintf(msg, sizeof(msg), "authenticated id %s (%d %d recipients, %d %d limits)", priv.authenticated, hourly, daily, h_limit, d_limit);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1405 my_syslog(&priv, msg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1406 }
255
d6d5c50b9278 Allow dnswl_list and dnsbl_list to be empty, to override lists specified in the ancestor contexts. Add daily recipient limits as a multiple of the hourly limits.
Carl Byington <carl@five-ten-sg.com>
parents: 252
diff changeset
1407 if ((hourly > h_limit) || (daily > d_limit)){
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1408 smfi_setreply(ctx, (char*)"550", (char*)"5.7.1", (char*)"recipient rate limit exceeded");
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1409 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1410 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1411 st = white;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1412 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1413 else if (fromvalue == token_black) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1414 st = black;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1415 }
342
6d27b4f45799 allow envelope from whitelisting without dkim override for mail from localhost, or where the from address is root@*
Carl Byington <carl@five-ten-sg.com>
parents: 340
diff changeset
1416 else if ((fromvalue == token_white) && (local_source || from_root)) {
6d27b4f45799 allow envelope from whitelisting without dkim override for mail from localhost, or where the from address is root@*
Carl Byington <carl@five-ten-sg.com>
parents: 340
diff changeset
1417 st = white;
6d27b4f45799 allow envelope from whitelisting without dkim override for mail from localhost, or where the from address is root@*
Carl Byington <carl@five-ten-sg.com>
parents: 340
diff changeset
1418 }
216
784030ac71f1 Never whitelist self addressed mail. Changes for Fedora 10 and const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 214
diff changeset
1419 else if ((fromvalue == token_white) && !self) {
330
b5b93a7e1e6d ignore envelope-from based whitelisting if we have a dkim requirement for that domain
Carl Byington <carl@five-ten-sg.com>
parents: 329
diff changeset
1420 // whitelisting based on envelope from value, but ignore it if
350
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
1421 // we have a dkim requirement for the original domain
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
1422 const char *domain = strchr(priv.origaddr, '@');
436
7b072e16bd69 fix syslog for long messages, supress dkim checks for mail from localhost
Carl Byington <carl@five-ten-sg.com>
parents: 432
diff changeset
1423 if (domain && !local_source) {
338
f375a67ee516 set st in all paths; missing +1 to avoid lookup starting with @
Carl Byington <carl@five-ten-sg.com>
parents: 337
diff changeset
1424 DKIMP dk = con.find_dkim_from(domain+1);
330
b5b93a7e1e6d ignore envelope-from based whitelisting if we have a dkim requirement for that domain
Carl Byington <carl@five-ten-sg.com>
parents: 329
diff changeset
1425 if (dk && (dk->action == token_require_signed)) {
b5b93a7e1e6d ignore envelope-from based whitelisting if we have a dkim requirement for that domain
Carl Byington <carl@five-ten-sg.com>
parents: 329
diff changeset
1426 my_syslog(&priv, "dkim require_signed overrides envelope from whitelist");
451
f2bc221240e8 add unsigned_black for enforcement of dmarc policy
Carl Byington <carl@five-ten-sg.com>
parents: 443
diff changeset
1427 st = whitesofar;
f2bc221240e8 add unsigned_black for enforcement of dmarc policy
Carl Byington <carl@five-ten-sg.com>
parents: 443
diff changeset
1428 }
f2bc221240e8 add unsigned_black for enforcement of dmarc policy
Carl Byington <carl@five-ten-sg.com>
parents: 443
diff changeset
1429 else if (dk && (dk->action == token_unsigned_black)) {
f2bc221240e8 add unsigned_black for enforcement of dmarc policy
Carl Byington <carl@five-ten-sg.com>
parents: 443
diff changeset
1430 my_syslog(&priv, "dkim unsigned_black overrides envelope from whitelist");
f2bc221240e8 add unsigned_black for enforcement of dmarc policy
Carl Byington <carl@five-ten-sg.com>
parents: 443
diff changeset
1431 st = whitesofar;
330
b5b93a7e1e6d ignore envelope-from based whitelisting if we have a dkim requirement for that domain
Carl Byington <carl@five-ten-sg.com>
parents: 329
diff changeset
1432 }
b5b93a7e1e6d ignore envelope-from based whitelisting if we have a dkim requirement for that domain
Carl Byington <carl@five-ten-sg.com>
parents: 329
diff changeset
1433 else st = white;
b5b93a7e1e6d ignore envelope-from based whitelisting if we have a dkim requirement for that domain
Carl Byington <carl@five-ten-sg.com>
parents: 329
diff changeset
1434 }
b5b93a7e1e6d ignore envelope-from based whitelisting if we have a dkim requirement for that domain
Carl Byington <carl@five-ten-sg.com>
parents: 329
diff changeset
1435 else st = white; // might be <>, envelope from has no @
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1436 }
340
be776a246f97 when dkim require_signed overrides envelope from whitelisting, we still want to check dns based white/blacklists before content filtering
Carl Byington <carl@five-ten-sg.com>
parents: 338
diff changeset
1437
458
6c1c2bd9fb54 ignore dnswl entries if the sender is <>
Carl Byington <carl@five-ten-sg.com>
parents: 456
diff changeset
1438 if (((st == oksofar) || (st == whitesofar)) && (strcmp(priv.mailaddr, "<>") != 0)) {
6c1c2bd9fb54 ignore dnswl entries if the sender is <>
Carl Byington <carl@five-ten-sg.com>
parents: 456
diff changeset
1439 // check the dns based whitelists if the sender was not empty
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1440 DNSWLP acceptlist = NULL; // list that caused the whitelisting
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1441 if (check_dnswl(priv, con.get_dnswl_list(), acceptlist)) {
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1442 st = white;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1443 if (debug_syslog > 1) {
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1444 char msg[maxlen];
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1445 snprintf(msg, sizeof(msg), "whitelisted by %s", acceptlist->name);
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1446 my_syslog(&priv, msg);
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1447 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1448 }
451
f2bc221240e8 add unsigned_black for enforcement of dmarc policy
Carl Byington <carl@five-ten-sg.com>
parents: 443
diff changeset
1449 }
f2bc221240e8 add unsigned_black for enforcement of dmarc policy
Carl Byington <carl@five-ten-sg.com>
parents: 443
diff changeset
1450
f2bc221240e8 add unsigned_black for enforcement of dmarc policy
Carl Byington <carl@five-ten-sg.com>
parents: 443
diff changeset
1451 if (st == oksofar) {
f2bc221240e8 add unsigned_black for enforcement of dmarc policy
Carl Byington <carl@five-ten-sg.com>
parents: 443
diff changeset
1452 // check the dns based blacklists
f2bc221240e8 add unsigned_black for enforcement of dmarc policy
Carl Byington <carl@five-ten-sg.com>
parents: 443
diff changeset
1453 if (check_dnsbl(priv, con.get_dnsbl_list(), rejectlist)) {
340
be776a246f97 when dkim require_signed overrides envelope from whitelisting, we still want to check dns based white/blacklists before content filtering
Carl Byington <carl@five-ten-sg.com>
parents: 338
diff changeset
1454 // reject the recipient based on some dnsbl
be776a246f97 when dkim require_signed overrides envelope from whitelisting, we still want to check dns based white/blacklists before content filtering
Carl Byington <carl@five-ten-sg.com>
parents: 338
diff changeset
1455 char adr[sizeof "255.255.255.255 "];
be776a246f97 when dkim require_signed overrides envelope from whitelisting, we still want to check dns based white/blacklists before content filtering
Carl Byington <carl@five-ten-sg.com>
parents: 338
diff changeset
1456 adr[0] = '\0';
be776a246f97 when dkim require_signed overrides envelope from whitelisting, we still want to check dns based white/blacklists before content filtering
Carl Byington <carl@five-ten-sg.com>
parents: 338
diff changeset
1457 inet_ntop(AF_INET, (const u_char *)&priv.ip, adr, sizeof(adr));
be776a246f97 when dkim require_signed overrides envelope from whitelisting, we still want to check dns based white/blacklists before content filtering
Carl Byington <carl@five-ten-sg.com>
parents: 338
diff changeset
1458 char buf[maxlen];
be776a246f97 when dkim require_signed overrides envelope from whitelisting, we still want to check dns based white/blacklists before content filtering
Carl Byington <carl@five-ten-sg.com>
parents: 338
diff changeset
1459 snprintf(buf, sizeof(buf), rejectlist->message, adr, adr);
be776a246f97 when dkim require_signed overrides envelope from whitelisting, we still want to check dns based white/blacklists before content filtering
Carl Byington <carl@five-ten-sg.com>
parents: 338
diff changeset
1460 smfi_setreply(ctx, (char*)"550", (char*)"5.7.1", buf);
be776a246f97 when dkim require_signed overrides envelope from whitelisting, we still want to check dns based white/blacklists before content filtering
Carl Byington <carl@five-ten-sg.com>
parents: 338
diff changeset
1461 return SMFIS_REJECT;
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1462 }
268
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1463 // check forged rdns
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1464 if (con.get_requirerdns() && (!priv.client_dns_name || priv.client_dns_forged)) {
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1465 // reject the recipient based on forged reverse dns
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1466 char buf[maxlen];
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1467 snprintf(buf, sizeof(buf), "%s is not acceptable", priv.client_name);
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1468 smfi_setreply(ctx, (char*)"550", (char*)"5.7.1", buf);
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1469 return SMFIS_REJECT;
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1470 }
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1471 // check generic rdns
301
13905d36ca82 Generic regex now matches against the reverse dns PTR value
Carl Byington <carl@five-ten-sg.com>
parents: 296
diff changeset
1472 if (priv.client_dns_name) {
13905d36ca82 Generic regex now matches against the reverse dns PTR value
Carl Byington <carl@five-ten-sg.com>
parents: 296
diff changeset
1473 const char *msg = con.generic_match(priv.client_dns_name);
13905d36ca82 Generic regex now matches against the reverse dns PTR value
Carl Byington <carl@five-ten-sg.com>
parents: 296
diff changeset
1474 if (msg) {
13905d36ca82 Generic regex now matches against the reverse dns PTR value
Carl Byington <carl@five-ten-sg.com>
parents: 296
diff changeset
1475 // reject the recipient based on generic reverse dns
13905d36ca82 Generic regex now matches against the reverse dns PTR value
Carl Byington <carl@five-ten-sg.com>
parents: 296
diff changeset
1476 char buf[maxlen];
13905d36ca82 Generic regex now matches against the reverse dns PTR value
Carl Byington <carl@five-ten-sg.com>
parents: 296
diff changeset
1477 snprintf(buf, sizeof(buf), msg, priv.client_name);
13905d36ca82 Generic regex now matches against the reverse dns PTR value
Carl Byington <carl@five-ten-sg.com>
parents: 296
diff changeset
1478 smfi_setreply(ctx, (char*)"550", (char*)"5.7.1", buf);
13905d36ca82 Generic regex now matches against the reverse dns PTR value
Carl Byington <carl@five-ten-sg.com>
parents: 296
diff changeset
1479 return SMFIS_REJECT;
13905d36ca82 Generic regex now matches against the reverse dns PTR value
Carl Byington <carl@five-ten-sg.com>
parents: 296
diff changeset
1480 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1481 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1482 }
340
be776a246f97 when dkim require_signed overrides envelope from whitelisting, we still want to check dns based white/blacklists before content filtering
Carl Byington <carl@five-ten-sg.com>
parents: 338
diff changeset
1483
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1484 if (st == black) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1485 // reject the recipient based on blacklisting either from or to
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1486 smfi_setreply(ctx, (char*)"550", (char*)"5.7.1", (char*)"no such user");
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1487 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1488 }
340
be776a246f97 when dkim require_signed overrides envelope from whitelisting, we still want to check dns based white/blacklists before content filtering
Carl Byington <carl@five-ten-sg.com>
parents: 338
diff changeset
1489
203
92a5c866bdfa Verify from/to pairs even if they might be explicitly whitelisted.
Carl Byington <carl@five-ten-sg.com>
parents: 194
diff changeset
1490 if (ver) {
350
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
1491 // try to verify the original from/to pair of addresses even if it might be explicitly whitelisted
346
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1492 const char *loto = to_lower_string(rcptaddr, false);
350
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
1493 bool rc = ver->ok(priv.queueid, priv.origaddr, loto);
346
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1494 free((void*)loto);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1495 if (!rc) {
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1496 smfi_setreply(ctx, (char*)"550", (char*)"5.7.1", (char*)"no such user");
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1497 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1498 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1499 }
340
be776a246f97 when dkim require_signed overrides envelope from whitelisting, we still want to check dns based white/blacklists before content filtering
Carl Byington <carl@five-ten-sg.com>
parents: 338
diff changeset
1500
263
e118fd2c6af0 fix unauthenticated rate limit bug for empty mail from; move unauthenticate rate limit checks after spam filtering
Carl Byington <carl@five-ten-sg.com>
parents: 259
diff changeset
1501 if (!priv.authenticated && dc.default_context->is_unauthenticated_limited(priv.mailaddr)) {
e118fd2c6af0 fix unauthenticated rate limit bug for empty mail from; move unauthenticate rate limit checks after spam filtering
Carl Byington <carl@five-ten-sg.com>
parents: 259
diff changeset
1502 int hourly, daily;
e118fd2c6af0 fix unauthenticated rate limit bug for empty mail from; move unauthenticate rate limit checks after spam filtering
Carl Byington <carl@five-ten-sg.com>
parents: 259
diff changeset
1503 incr_rcpt_count(priv.mailaddr, hourly, daily);
278
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 272
diff changeset
1504 int h_limit = dc.default_context->find_rate_limit(priv.mailaddr);
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 272
diff changeset
1505 int d_limit = dc.default_context->get_daily_rate_multiple() * h_limit;
263
e118fd2c6af0 fix unauthenticated rate limit bug for empty mail from; move unauthenticate rate limit checks after spam filtering
Carl Byington <carl@five-ten-sg.com>
parents: 259
diff changeset
1506 if (debug_syslog > 1) {
e118fd2c6af0 fix unauthenticated rate limit bug for empty mail from; move unauthenticate rate limit checks after spam filtering
Carl Byington <carl@five-ten-sg.com>
parents: 259
diff changeset
1507 char msg[maxlen];
e118fd2c6af0 fix unauthenticated rate limit bug for empty mail from; move unauthenticate rate limit checks after spam filtering
Carl Byington <carl@five-ten-sg.com>
parents: 259
diff changeset
1508 snprintf(msg, sizeof(msg), "unauthenticated address %s (%d %d recipients, %d %d limits)", priv.mailaddr, hourly, daily, h_limit, d_limit);
e118fd2c6af0 fix unauthenticated rate limit bug for empty mail from; move unauthenticate rate limit checks after spam filtering
Carl Byington <carl@five-ten-sg.com>
parents: 259
diff changeset
1509 my_syslog(&priv, msg);
e118fd2c6af0 fix unauthenticated rate limit bug for empty mail from; move unauthenticate rate limit checks after spam filtering
Carl Byington <carl@five-ten-sg.com>
parents: 259
diff changeset
1510 }
e118fd2c6af0 fix unauthenticated rate limit bug for empty mail from; move unauthenticate rate limit checks after spam filtering
Carl Byington <carl@five-ten-sg.com>
parents: 259
diff changeset
1511 if ((hourly > h_limit) || (daily > d_limit)){
e118fd2c6af0 fix unauthenticated rate limit bug for empty mail from; move unauthenticate rate limit checks after spam filtering
Carl Byington <carl@five-ten-sg.com>
parents: 259
diff changeset
1512 smfi_setreply(ctx, (char*)"550", (char*)"5.7.1", (char*)"recipient rate limit exceeded");
e118fd2c6af0 fix unauthenticated rate limit bug for empty mail from; move unauthenticate rate limit checks after spam filtering
Carl Byington <carl@five-ten-sg.com>
parents: 259
diff changeset
1513 return SMFIS_REJECT;
e118fd2c6af0 fix unauthenticated rate limit bug for empty mail from; move unauthenticate rate limit checks after spam filtering
Carl Byington <carl@five-ten-sg.com>
parents: 259
diff changeset
1514 }
e118fd2c6af0 fix unauthenticated rate limit bug for empty mail from; move unauthenticate rate limit checks after spam filtering
Carl Byington <carl@five-ten-sg.com>
parents: 259
diff changeset
1515 }
340
be776a246f97 when dkim require_signed overrides envelope from whitelisting, we still want to check dns based white/blacklists before content filtering
Carl Byington <carl@five-ten-sg.com>
parents: 338
diff changeset
1516
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1517 // we will accept the recipient, but add an auto-whitelist entry
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1518 // if needed to ensure we can accept replies
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1519 loto = to_lower_string(rcptaddr);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1520 WHITELISTERP w = con2.find_autowhite(loto, priv.mailaddr);
291
9f0d9fcb58dd Never add auto-whitelist entries for outgoing mail from localhost
Carl Byington <carl@five-ten-sg.com>
parents: 290
diff changeset
1521
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1522 // check if local part is too big
458
6c1c2bd9fb54 ignore dnswl entries if the sender is <>
Carl Byington <carl@five-ten-sg.com>
parents: 456
diff changeset
1523 const int max_local_size = 35;
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1524 const char *p = strchr(loto, '@');
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1525 int len = (p) ? p-loto : max_local_size;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1526 if (len >= max_local_size) w = NULL; // too big, pretend we don't have a whitelister
291
9f0d9fcb58dd Never add auto-whitelist entries for outgoing mail from localhost
Carl Byington <carl@five-ten-sg.com>
parents: 290
diff changeset
1527
9f0d9fcb58dd Never add auto-whitelist entries for outgoing mail from localhost
Carl Byington <carl@five-ten-sg.com>
parents: 290
diff changeset
1528 // ignore auto whitelisting from outgoing mail from localhost
342
6d27b4f45799 allow envelope from whitelisting without dkim override for mail from localhost, or where the from address is root@*
Carl Byington <carl@five-ten-sg.com>
parents: 340
diff changeset
1529 if (local_source) w = NULL; // outgoing mail from localhost, pretend we don't have a whitelister
291
9f0d9fcb58dd Never add auto-whitelist entries for outgoing mail from localhost
Carl Byington <carl@five-ten-sg.com>
parents: 290
diff changeset
1530
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1531 // record it if we have a whitelister
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1532 if (w) {
231
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1533 DELAYWHITEP dwp = new DELAYWHITE(loto, w, &con2); // dwp takes ownership of the string
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1534 priv.delayer.push_back(dwp);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1535 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1536 else {
231
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1537 free((void*)loto); // or we free it here
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1538 }
179
8b86a894514d embedded dcc filtering
carl
parents: 178
diff changeset
1539
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1540 // accept the recipient
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1541 if (!con.get_content_filtering()) st = white;
179
8b86a894514d embedded dcc filtering
carl
parents: 178
diff changeset
1542
451
f2bc221240e8 add unsigned_black for enforcement of dmarc policy
Carl Byington <carl@five-ten-sg.com>
parents: 443
diff changeset
1543 if ((st == oksofar) || (st == whitesofar)) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1544 // remember first content filtering context
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1545 if (con.get_content_filtering()) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1546 if (!priv.content_context) priv.content_context = &con;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1547 else if (con.get_require() && (priv.content_context != &con)) {
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1548 smfi_setreply(ctx, (char*)"452", (char*)"4.2.1", (char*)"incompatible filtering contexts");
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1549 return SMFIS_TEMPFAIL;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1550 }
350
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
1551 priv.need_content_filter(con);
451
f2bc221240e8 add unsigned_black for enforcement of dmarc policy
Carl Byington <carl@five-ten-sg.com>
parents: 443
diff changeset
1552 if (st == oksofar) {
f2bc221240e8 add unsigned_black for enforcement of dmarc policy
Carl Byington <carl@five-ten-sg.com>
parents: 443
diff changeset
1553 char bu[maxlen];
f2bc221240e8 add unsigned_black for enforcement of dmarc policy
Carl Byington <carl@five-ten-sg.com>
parents: 443
diff changeset
1554 bool uri = false;
f2bc221240e8 add unsigned_black for enforcement of dmarc policy
Carl Byington <carl@five-ten-sg.com>
parents: 443
diff changeset
1555 // content filtering implies also checking helo name on uribl (if enabled)
f2bc221240e8 add unsigned_black for enforcement of dmarc policy
Carl Byington <carl@five-ten-sg.com>
parents: 443
diff changeset
1556 if (priv.helo_uribl) {
f2bc221240e8 add unsigned_black for enforcement of dmarc policy
Carl Byington <carl@five-ten-sg.com>
parents: 443
diff changeset
1557 snprintf(bu, sizeof(bu), "(helo %s)", priv.host_uribl);
f2bc221240e8 add unsigned_black for enforcement of dmarc policy
Carl Byington <carl@five-ten-sg.com>
parents: 443
diff changeset
1558 uri = true;
f2bc221240e8 add unsigned_black for enforcement of dmarc policy
Carl Byington <carl@five-ten-sg.com>
parents: 443
diff changeset
1559 }
f2bc221240e8 add unsigned_black for enforcement of dmarc policy
Carl Byington <carl@five-ten-sg.com>
parents: 443
diff changeset
1560 // content filtering implies also checking client reverse dns name on uribl (if enabled)
f2bc221240e8 add unsigned_black for enforcement of dmarc policy
Carl Byington <carl@five-ten-sg.com>
parents: 443
diff changeset
1561 if (priv.client_uribl) {
f2bc221240e8 add unsigned_black for enforcement of dmarc policy
Carl Byington <carl@five-ten-sg.com>
parents: 443
diff changeset
1562 snprintf(bu, sizeof(bu), "(rdns %s)", priv.host_uribl);
f2bc221240e8 add unsigned_black for enforcement of dmarc policy
Carl Byington <carl@five-ten-sg.com>
parents: 443
diff changeset
1563 uri = true;
f2bc221240e8 add unsigned_black for enforcement of dmarc policy
Carl Byington <carl@five-ten-sg.com>
parents: 443
diff changeset
1564 }
f2bc221240e8 add unsigned_black for enforcement of dmarc policy
Carl Byington <carl@five-ten-sg.com>
parents: 443
diff changeset
1565 // content filtering implies also checking mail from domain name on uribl (if enabled)
f2bc221240e8 add unsigned_black for enforcement of dmarc policy
Carl Byington <carl@five-ten-sg.com>
parents: 443
diff changeset
1566 if (priv.from_uribl) {
f2bc221240e8 add unsigned_black for enforcement of dmarc policy
Carl Byington <carl@five-ten-sg.com>
parents: 443
diff changeset
1567 snprintf(bu, sizeof(bu), "(from %s)", priv.host_uribl);
f2bc221240e8 add unsigned_black for enforcement of dmarc policy
Carl Byington <carl@five-ten-sg.com>
parents: 443
diff changeset
1568 uri = true;
f2bc221240e8 add unsigned_black for enforcement of dmarc policy
Carl Byington <carl@five-ten-sg.com>
parents: 443
diff changeset
1569 }
f2bc221240e8 add unsigned_black for enforcement of dmarc policy
Carl Byington <carl@five-ten-sg.com>
parents: 443
diff changeset
1570 if (uri) {
f2bc221240e8 add unsigned_black for enforcement of dmarc policy
Carl Byington <carl@five-ten-sg.com>
parents: 443
diff changeset
1571 char buf[maxlen];
f2bc221240e8 add unsigned_black for enforcement of dmarc policy
Carl Byington <carl@five-ten-sg.com>
parents: 443
diff changeset
1572 snprintf(buf, sizeof(buf), priv.uribl_message, bu, priv.host_uribl);
f2bc221240e8 add unsigned_black for enforcement of dmarc policy
Carl Byington <carl@five-ten-sg.com>
parents: 443
diff changeset
1573 smfi_setreply(ctx, (char*)"550", (char*)"5.7.1", buf);
f2bc221240e8 add unsigned_black for enforcement of dmarc policy
Carl Byington <carl@five-ten-sg.com>
parents: 443
diff changeset
1574 return SMFIS_REJECT;
f2bc221240e8 add unsigned_black for enforcement of dmarc policy
Carl Byington <carl@five-ten-sg.com>
parents: 443
diff changeset
1575 }
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
1576 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1577 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1578 // remember the non-whites
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
1579 register_string(priv.env_to, rcptaddr, &con);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1580 priv.only_whites = false;
456
2cf7183a911c add unsigned_black for enforcement of dmarc policy
Carl Byington <carl@five-ten-sg.com>
parents: 451
diff changeset
1581 if (st == oksofar) {
2cf7183a911c add unsigned_black for enforcement of dmarc policy
Carl Byington <carl@five-ten-sg.com>
parents: 451
diff changeset
1582 priv.want_spamassassin |= (priv.assassin) && // have spam assassin available and
2cf7183a911c add unsigned_black for enforcement of dmarc policy
Carl Byington <carl@five-ten-sg.com>
parents: 451
diff changeset
1583 (con.get_spamassassin_limit() != 0); // want to use it with a non-zero score
2cf7183a911c add unsigned_black for enforcement of dmarc policy
Carl Byington <carl@five-ten-sg.com>
parents: 451
diff changeset
1584 priv.want_dccgrey |= (priv.dccifd) && // have dcc interface and
2cf7183a911c add unsigned_black for enforcement of dmarc policy
Carl Byington <carl@five-ten-sg.com>
parents: 451
diff changeset
1585 (con.get_grey()); // want to use it for greylisting
2cf7183a911c add unsigned_black for enforcement of dmarc policy
Carl Byington <carl@five-ten-sg.com>
parents: 451
diff changeset
1586 priv.want_dccbulk |= (priv.dccifd) && // have dcc interface and
2cf7183a911c add unsigned_black for enforcement of dmarc policy
Carl Byington <carl@five-ten-sg.com>
parents: 451
diff changeset
1587 (con.get_bulk() != 0); // want to use it for bulk detection
2cf7183a911c add unsigned_black for enforcement of dmarc policy
Carl Byington <carl@five-ten-sg.com>
parents: 451
diff changeset
1588 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1589 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1590 if (st == white) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1591 priv.have_whites = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1592 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1593 return SMFIS_CONTINUE;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1594 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1595
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1596 sfsistat mlfi_header(SMFICTX* ctx, char* headerf, char* headerv)
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1597 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1598 mlfiPriv &priv = *MLFIPRIV;
321
e172dc10fe24 add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 311
diff changeset
1599 priv.header_count++;
337
d68fda9be1c1 need to convert nl and tab to spaces in header values before regexec
Carl Byington <carl@five-ten-sg.com>
parents: 335
diff changeset
1600 char *value = headerv;
d68fda9be1c1 need to convert nl and tab to spaces in header values before regexec
Carl Byington <carl@five-ten-sg.com>
parents: 335
diff changeset
1601 if ((priv.header_count < 4) || (strcasecmp(headerf, "from") == 0)) {
d68fda9be1c1 need to convert nl and tab to spaces in header values before regexec
Carl Byington <carl@five-ten-sg.com>
parents: 335
diff changeset
1602 for (size_t i=0; i<strlen(value); i++) {
d68fda9be1c1 need to convert nl and tab to spaces in header values before regexec
Carl Byington <carl@five-ten-sg.com>
parents: 335
diff changeset
1603 if (value[i] < 0x20) value[i] = ' ';
d68fda9be1c1 need to convert nl and tab to spaces in header values before regexec
Carl Byington <carl@five-ten-sg.com>
parents: 335
diff changeset
1604 }
d68fda9be1c1 need to convert nl and tab to spaces in header values before regexec
Carl Byington <carl@five-ten-sg.com>
parents: 335
diff changeset
1605 }
d68fda9be1c1 need to convert nl and tab to spaces in header values before regexec
Carl Byington <carl@five-ten-sg.com>
parents: 335
diff changeset
1606
322
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1607 if (priv.dkim_ok) {
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1608 if ((priv.header_count == 1) && (strcasecmp(headerf, "DKIM-Filter") != 0)) priv.dkim_ok = false;
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1609 if (priv.header_count == 2) {
350
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
1610 if ((strcasecmp(headerf, "Authentication-Results") == 0) &&
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
1611 (strncasecmp(headerv, token_myhostname, strlen(token_myhostname)) == 0)) {
322
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1612 const int nmatch = 2;
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1613 regmatch_t match[nmatch];
326
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
1614 while (true) {
350
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
1615 if (0 == regexec(&dkim_r_pattern, value, nmatch, match, 0)) {
326
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
1616 int s1 = match[1].rm_so; // domain
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
1617 int e1 = match[1].rm_eo;
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
1618 if (s1 != -1) {
337
d68fda9be1c1 need to convert nl and tab to spaces in header values before regexec
Carl Byington <carl@five-ten-sg.com>
parents: 335
diff changeset
1619 char save = value[e1];
d68fda9be1c1 need to convert nl and tab to spaces in header values before regexec
Carl Byington <carl@five-ten-sg.com>
parents: 335
diff changeset
1620 value[e1] = '\0';
d68fda9be1c1 need to convert nl and tab to spaces in header values before regexec
Carl Byington <carl@five-ten-sg.com>
parents: 335
diff changeset
1621 priv.dkim_signers.insert(strdup(value+s1));
d68fda9be1c1 need to convert nl and tab to spaces in header values before regexec
Carl Byington <carl@five-ten-sg.com>
parents: 335
diff changeset
1622 value[e1] = save;
d68fda9be1c1 need to convert nl and tab to spaces in header values before regexec
Carl Byington <carl@five-ten-sg.com>
parents: 335
diff changeset
1623 value += e1 + 1;
326
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
1624 }
327
51846836ec92 allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 326
diff changeset
1625 else break;
322
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1626 }
326
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
1627 else break;
322
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1628 }
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1629 }
350
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
1630 else if (strcasecmp(headerf, "DKIM-Signature") == 0) {
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
1631 const int nmatch = 2;
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
1632 regmatch_t match[nmatch];
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
1633 if (0 == regexec(&dkim_s_pattern, value, nmatch, match, 0)) {
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
1634 int s1 = match[1].rm_so; // domain
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
1635 int e1 = match[1].rm_eo;
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
1636 if (s1 != -1) {
356
90d433d1382e when extracting header fields, need to preserve the header value since that will be used by subsequent (dcc,spamd,etc) milters
Carl Byington <carl@five-ten-sg.com>
parents: 354
diff changeset
1637 char save = value[e1];
350
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
1638 value[e1] = '\0';
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
1639 priv.dkim_signers.insert(strdup(value+s1));
356
90d433d1382e when extracting header fields, need to preserve the header value since that will be used by subsequent (dcc,spamd,etc) milters
Carl Byington <carl@five-ten-sg.com>
parents: 354
diff changeset
1640 value[e1] = save;
350
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
1641 }
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
1642 }
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
1643 }
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
1644 else priv.dkim_ok = false;
322
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1645 }
328
b4f766947202 allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 327
diff changeset
1646 }
b4f766947202 allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 327
diff changeset
1647
334
a4f2fda72422 missing ==0 testing for from header, we were scanning all the non-from headers
Carl Byington <carl@five-ten-sg.com>
parents: 333
diff changeset
1648 // only look at the first from header
358
ef7479b2d64f use the last @domain in the from: header
Carl Byington <carl@five-ten-sg.com>
parents: 356
diff changeset
1649 // this does NOT fully parse rfc2822 from: headers. In particular, embedded
ef7479b2d64f use the last @domain in the from: header
Carl Byington <carl@five-ten-sg.com>
parents: 356
diff changeset
1650 // comments and quoted @ are not handled.
335
354b15b8b263 header from may appear very early in unsigned messages
Carl Byington <carl@five-ten-sg.com>
parents: 334
diff changeset
1651 if ((!priv.fromaddr) && (strcasecmp(headerf, "from") == 0)) {
328
b4f766947202 allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 327
diff changeset
1652 const int nmatch = 2;
b4f766947202 allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 327
diff changeset
1653 regmatch_t match[nmatch];
350
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
1654 if (0 == regexec(&from_pattern, value, nmatch, match, 0)) {
328
b4f766947202 allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 327
diff changeset
1655 int s1 = match[1].rm_so; // domain
b4f766947202 allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 327
diff changeset
1656 int e1 = match[1].rm_eo;
b4f766947202 allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 327
diff changeset
1657 if (s1 != -1) {
356
90d433d1382e when extracting header fields, need to preserve the header value since that will be used by subsequent (dcc,spamd,etc) milters
Carl Byington <carl@five-ten-sg.com>
parents: 354
diff changeset
1658 char save = value[e1];
337
d68fda9be1c1 need to convert nl and tab to spaces in header values before regexec
Carl Byington <carl@five-ten-sg.com>
parents: 335
diff changeset
1659 value[e1] = '\0';
352
f5a6740cabee need to lowercase the domain extracted from the from header so it will match the keys in dkim_from
Carl Byington <carl@five-ten-sg.com>
parents: 350
diff changeset
1660 priv.fromaddr = to_lower_string(value+s1, false);
356
90d433d1382e when extracting header fields, need to preserve the header value since that will be used by subsequent (dcc,spamd,etc) milters
Carl Byington <carl@five-ten-sg.com>
parents: 354
diff changeset
1661 value[e1] = save;
322
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1662 }
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1663 }
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1664 }
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1665
231
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1666 // headers that avoid autowhitelisting
230
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
1667 if (((strcasecmp(headerf, "precedence") == 0) && (strcasecmp(headerv, "bulk") == 0)) ||
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
1668 ((strcasecmp(headerf, "content-type") == 0) && (strncasecmp(headerv, "multipart/report", 16) == 0))) {
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
1669 priv.allow_autowhitelisting = false;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
1670 }
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
1671
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1672 // other headers are only needed for content filtering
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1673 if (priv.authenticated) return SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1674 if (priv.only_whites) return SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1675 if (priv.want_spamassassin) priv.assassin->mlfi_header(headerf, headerv);
443
0df77bbb7fc2 always call dcc code so we get log entries
Carl Byington <carl@five-ten-sg.com>
parents: 438
diff changeset
1676 if (priv.dccifd) priv.dccifd->mlfi_header(ctx, headerf, headerv);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1677 return SMFIS_CONTINUE;
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1678 }
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1679
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1680 sfsistat mlfi_eoh(SMFICTX* ctx)
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1681 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1682 mlfiPriv &priv = *MLFIPRIV;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1683 // delayed autowhitelisting
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1684 while (!priv.delayer.empty()) {
231
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1685 DELAYWHITEP dwp = priv.delayer.front();
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1686 const char *loto = dwp->get_loto();
230
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
1687 if (priv.allow_autowhitelisting) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1688 WHITELISTERP w = dwp->get_w();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1689 CONTEXTP con2 = dwp->get_con();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1690 if (debug_syslog > 1) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1691 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1692 char msg[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1693 snprintf(msg, sizeof(msg), "whitelist reply from <%s> in context %s", loto, con2->get_full_name(buf,maxlen));
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1694 my_syslog(&priv, msg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1695 }
231
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1696 w->sent(loto); // don't free it, the whitelister takes ownership of the string
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1697 }
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1698 else {
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1699 if (debug_syslog > 1) {
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1700 char msg[maxlen];
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1701 snprintf(msg, sizeof(msg), "avoid whitelist reply from <%s> for outgoing auto-responder", loto);
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1702 my_syslog(&priv, msg);
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1703 }
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1704 if (loto) free((void*)loto);// or we free it here
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1705 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1706 delete dwp;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1707 priv.delayer.pop_front();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1708 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1709 // content filtering
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1710 if (priv.authenticated) return SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1711 if (priv.only_whites) return SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1712 if (priv.want_spamassassin) priv.assassin->mlfi_eoh();
443
0df77bbb7fc2 always call dcc code so we get log entries
Carl Byington <carl@five-ten-sg.com>
parents: 438
diff changeset
1713 if (priv.dccifd) priv.dccifd->mlfi_eoh();
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1714 return SMFIS_CONTINUE;
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1715 }
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1716
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1717 sfsistat mlfi_body(SMFICTX *ctx, u_char *data, size_t len)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1718 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1719 mlfiPriv &priv = *MLFIPRIV;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1720 if (priv.authenticated) return SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1721 if (priv.only_whites) return SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1722 if (priv.want_spamassassin) priv.assassin->mlfi_body(data, len);
443
0df77bbb7fc2 always call dcc code so we get log entries
Carl Byington <carl@five-ten-sg.com>
parents: 438
diff changeset
1723 if (priv.dccifd) priv.dccifd->mlfi_body(data, len);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1724 priv.scanner->scan(data, len);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1725 return SMFIS_CONTINUE;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1726 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1727
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1728 sfsistat mlfi_eom(SMFICTX *ctx)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1729 {
402
9096d2676c13 suppress duplicate calls to acceptable_content for messages with multiple recipients using the same filtering context
Carl Byington <carl@five-ten-sg.com>
parents: 393
diff changeset
1730 sfsistat rc;
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1731 mlfiPriv &priv = *MLFIPRIV;
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1732 const char *host = NULL;
382
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
1733 uint32_t ip;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1734 // process end of message
190
004b855c6c1f fix null pointer dereference from missing HELO command
carl
parents: 188
diff changeset
1735 priv.eom = true;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1736 if (priv.authenticated || priv.only_whites) rc = SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1737 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1738 // assert env_to not empty, it contains the
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1739 // non-whitelisted folks that want content filtering
436
7b072e16bd69 fix syslog for long messages, supress dkim checks for mail from localhost
Carl Byington <carl@five-ten-sg.com>
parents: 432
diff changeset
1740 const u_char *src = (const u_char *)&priv.ip;
7b072e16bd69 fix syslog for long messages, supress dkim checks for mail from localhost
Carl Byington <carl@five-ten-sg.com>
parents: 432
diff changeset
1741 bool local_source = (src[0] == 127);
7b072e16bd69 fix syslog for long messages, supress dkim checks for mail from localhost
Carl Byington <carl@five-ten-sg.com>
parents: 432
diff changeset
1742 int score = (priv.want_spamassassin) ? priv.assassin->mlfi_eom() : 0;
7b072e16bd69 fix syslog for long messages, supress dkim checks for mail from localhost
Carl Byington <carl@five-ten-sg.com>
parents: 432
diff changeset
1743 bool grey = false;
7b072e16bd69 fix syslog for long messages, supress dkim checks for mail from localhost
Carl Byington <carl@five-ten-sg.com>
parents: 432
diff changeset
1744 int bulk = 0;
443
0df77bbb7fc2 always call dcc code so we get log entries
Carl Byington <carl@five-ten-sg.com>
parents: 438
diff changeset
1745 if (priv.dccifd) priv.dccifd->mlfi_eom(grey, bulk);
0df77bbb7fc2 always call dcc code so we get log entries
Carl Byington <carl@five-ten-sg.com>
parents: 438
diff changeset
1746 if (!priv.want_dccgrey) grey = false;
0df77bbb7fc2 always call dcc code so we get log entries
Carl Byington <carl@five-ten-sg.com>
parents: 438
diff changeset
1747 if (!priv.want_dccbulk) bulk = 0;
178
d6531c702be3 embedded dcc filtering
carl
parents: 177
diff changeset
1748
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1749 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1750 string msg;
331
9800776436b9 allow dkim whitelisting to override uribl hosts in the mail body
Carl Byington <carl@five-ten-sg.com>
parents: 330
diff changeset
1751 string_set unknowns;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1752 bool random = false;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1753 int limit = 0;
377
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1754 const char *signer = NULL;
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1755 bool checked_signers = false;
326
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
1756 if (priv.dkim_signers.empty()) {
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
1757 snprintf(buf, sizeof(buf), "acceptable content from %s signer *",
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
1758 (priv.fromaddr) ? priv.fromaddr : token_asterisk);
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
1759 my_syslog(&priv, buf);
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
1760 }
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
1761 else {
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
1762 for (string_set::iterator s=priv.dkim_signers.begin(); s!=priv.dkim_signers.end(); s++) {
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
1763 snprintf(buf, sizeof(buf), "acceptable content from %s signer %s",
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
1764 (priv.fromaddr) ? priv.fromaddr : token_asterisk, *s);
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
1765 my_syslog(&priv, buf);
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
1766 }
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
1767 }
323
a6de27b0a1e9 add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 322
diff changeset
1768
402
9096d2676c13 suppress duplicate calls to acceptable_content for messages with multiple recipients using the same filtering context
Carl Byington <carl@five-ten-sg.com>
parents: 393
diff changeset
1769 CONTEXT *con = NULL;
415
16451edcb962 spf code now handles mx,exists,ptr tags, multiple A records, %{i} macro
Carl Byington <carl@five-ten-sg.com>
parents: 414
diff changeset
1770 const char *st = token_black;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1771 for (context_map::iterator i=priv.env_to.begin(); i!=priv.env_to.end(); i++) {
402
9096d2676c13 suppress duplicate calls to acceptable_content for messages with multiple recipients using the same filtering context
Carl Byington <carl@five-ten-sg.com>
parents: 393
diff changeset
1772 const char *rcpt = (*i).first;
9096d2676c13 suppress duplicate calls to acceptable_content for messages with multiple recipients using the same filtering context
Carl Byington <carl@five-ten-sg.com>
parents: 393
diff changeset
1773 CONTEXT *next = (*i).second;
9096d2676c13 suppress duplicate calls to acceptable_content for messages with multiple recipients using the same filtering context
Carl Byington <carl@five-ten-sg.com>
parents: 393
diff changeset
1774 if (con != next) {
9096d2676c13 suppress duplicate calls to acceptable_content for messages with multiple recipients using the same filtering context
Carl Byington <carl@five-ten-sg.com>
parents: 393
diff changeset
1775 con = next;
436
7b072e16bd69 fix syslog for long messages, supress dkim checks for mail from localhost
Carl Byington <carl@five-ten-sg.com>
parents: 432
diff changeset
1776 st = con->acceptable_content(local_source, *priv.memory, score, bulk, priv.queueid, priv.dkim_signers, priv.fromaddr, &priv, msg);
402
9096d2676c13 suppress duplicate calls to acceptable_content for messages with multiple recipients using the same filtering context
Carl Byington <carl@five-ten-sg.com>
parents: 393
diff changeset
1777 }
331
9800776436b9 allow dkim whitelisting to override uribl hosts in the mail body
Carl Byington <carl@five-ten-sg.com>
parents: 330
diff changeset
1778 if (st == token_black) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1779 // bad html tags or excessive hosts or
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1780 // high spam assassin score or dcc bulk threshold exceedeed
322
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1781 // or signed by a dkim signer that we don't like
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1782 // or header from requires dkim signer that is missing
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1783 smfi_delrcpt(ctx, (char*)rcpt);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1784 }
331
9800776436b9 allow dkim whitelisting to override uribl hosts in the mail body
Carl Byington <carl@five-ten-sg.com>
parents: 330
diff changeset
1785 else if (st == token_unknown) {
377
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1786 if (!checked_signers) {
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1787 signer = priv.check_uribl_signers();
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1788 checked_signers = true;
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1789 if (signer) {
379
e42923f8f3fd better message for dkim signers listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 377
diff changeset
1790 snprintf(buf, sizeof(buf), "dkim signer %s listed on %s", signer, priv.uribl_suffix);
377
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1791 my_syslog(&priv, buf);
379
e42923f8f3fd better message for dkim signers listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 377
diff changeset
1792 snprintf(buf, sizeof(buf), "Mail rejected - dkim signed by %s listed on %s", signer, priv.uribl_suffix);
377
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1793 msg = string(buf);
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1794 }
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1795 }
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1796 if (signer) {
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1797 // dkim signer is on the uribl
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1798 smfi_delrcpt(ctx, (char*)rcpt);
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1799 }
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1800 else {
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1801 // still unknown
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1802 unknowns.insert(rcpt);
402
9096d2676c13 suppress duplicate calls to acceptable_content for messages with multiple recipients using the same filtering context
Carl Byington <carl@five-ten-sg.com>
parents: 393
diff changeset
1803 random |= con->get_host_random();
9096d2676c13 suppress duplicate calls to acceptable_content for messages with multiple recipients using the same filtering context
Carl Byington <carl@five-ten-sg.com>
parents: 393
diff changeset
1804 limit = max(limit, con->get_host_limit());
377
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1805 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1806 }
331
9800776436b9 allow dkim whitelisting to override uribl hosts in the mail body
Carl Byington <carl@five-ten-sg.com>
parents: 330
diff changeset
1807 else if (st == token_white) {
379
e42923f8f3fd better message for dkim signers listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 377
diff changeset
1808 priv.have_whites = true;
331
9800776436b9 allow dkim whitelisting to override uribl hosts in the mail body
Carl Byington <carl@five-ten-sg.com>
parents: 330
diff changeset
1809 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1810 }
379
e42923f8f3fd better message for dkim signers listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 377
diff changeset
1811 bool rejecting_unknowns = unknowns.empty();
e42923f8f3fd better message for dkim signers listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 377
diff changeset
1812 if (!rejecting_unknowns) {
331
9800776436b9 allow dkim whitelisting to override uribl hosts in the mail body
Carl Byington <carl@five-ten-sg.com>
parents: 330
diff changeset
1813 // check hosts for those recipients
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1814 const char *fmt;
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1815 const char *found;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1816 if (check_hosts(priv, random, limit, fmt, host, ip, found)) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1817 if (found) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1818 // uribl style
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1819 snprintf(buf, sizeof(buf), fmt, host, found);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1820 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1821 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1822 // dnsbl style
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1823 char adr[sizeof "255.255.255.255 "];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1824 adr[0] = '\0';
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1825 inet_ntop(AF_INET, (const u_char *)&ip, adr, sizeof(adr));
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1826 snprintf(buf, sizeof(buf), fmt, host, adr);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1827 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1828 msg = string(buf);
379
e42923f8f3fd better message for dkim signers listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 377
diff changeset
1829 rejecting_unknowns = true;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1830 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1831 }
379
e42923f8f3fd better message for dkim signers listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 377
diff changeset
1832 if (!rejecting_unknowns) {
e42923f8f3fd better message for dkim signers listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 377
diff changeset
1833 // greylist the unknowns if we don't have any whitelisted recipients
e42923f8f3fd better message for dkim signers listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 377
diff changeset
1834 if (priv.want_dccgrey && grey && !priv.have_whites) {
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1835 smfi_setreply(ctx, (char*)"452", (char*)"4.2.1", (char*)"temporary greylist embargoed");
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1836 rc = SMFIS_TEMPFAIL;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1837 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1838 else rc = SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1839 }
379
e42923f8f3fd better message for dkim signers listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 377
diff changeset
1840 else if (!priv.have_whites) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1841 // can reject the entire message
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1842 snprintf(buf, sizeof(buf), "%s", msg.c_str());
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1843 smfi_setreply(ctx, (char*)"550", (char*)"5.7.1", buf);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1844 rc = SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1845 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1846 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1847 // need to accept it but remove the recipients that don't want it
331
9800776436b9 allow dkim whitelisting to override uribl hosts in the mail body
Carl Byington <carl@five-ten-sg.com>
parents: 330
diff changeset
1848 for (string_set::iterator i=unknowns.begin(); i!=unknowns.end(); i++) {
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1849 const char *rcpt = *i;
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1850 smfi_delrcpt(ctx, (char*)rcpt);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1851 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1852 rc = SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1853 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1854 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1855 // reset for a new message on the same connection
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1856 mlfi_abort(ctx);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1857 return rc;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1858 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1859
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1860 sfsistat mlfi_abort(SMFICTX *ctx)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1861 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1862 mlfiPriv &priv = *MLFIPRIV;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1863 priv.reset();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1864 return SMFIS_CONTINUE;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1865 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1866
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1867 sfsistat mlfi_close(SMFICTX *ctx)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1868 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1869 mlfiPriv *priv = MLFIPRIV;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1870 if (!priv) return SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1871 delete priv;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1872 smfi_setpriv(ctx, NULL);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1873 return SMFIS_CONTINUE;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1874 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1875
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1876 struct smfiDesc smfilter =
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1877 {
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1878 (char*)"DNSBL", // filter name
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1879 SMFI_VERSION, // version code -- do not change
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1880 SMFIF_DELRCPT, // flags
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1881 mlfi_connect, // connection info filter
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1882 mlfi_helo, // SMTP HELO command filter
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1883 mlfi_envfrom, // envelope sender filter
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1884 mlfi_envrcpt, // envelope recipient filter
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1885 mlfi_header, // header filter
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1886 mlfi_eoh, // end of header
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1887 mlfi_body, // body block filter
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1888 mlfi_eom, // end of message
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1889 mlfi_abort, // message aborted
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1890 mlfi_close, // connection cleanup
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1891 };
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1892
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1893
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1894 ////////////////////////////////////////////////
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1895 // reload the config
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1896 //
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1897 CONFIG* new_conf();
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1898 CONFIG* new_conf() {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1899 CONFIG *newc = new CONFIG;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1900 pthread_mutex_lock(&config_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1901 newc->generation = generation++;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1902 pthread_mutex_unlock(&config_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1903 if (debug_syslog) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1904 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1905 snprintf(buf, sizeof(buf), "loading configuration generation %d", newc->generation);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1906 my_syslog(buf);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1907 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1908 if (load_conf(*newc, "dnsbl.conf")) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1909 newc->load_time = time(NULL);
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1910 return newc;
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1911 }
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1912 delete newc;
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1913 return NULL;
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1914 }
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1915
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1916
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1917 ////////////////////////////////////////////////
192
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1918 // thread to watch the old config files for changes
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1919 // and reload when needed.
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1920 // we also clear the SMTP AUTH recipient counts hourly
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1921 //
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1922 extern "C" {void* config_loader(void *arg);}
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1923 void* config_loader(void *arg) {
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1924 int loop1 = 0;
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1925 int loop2 = 0;
192
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1926 while (loader_run) {
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1927 sleep(180); // look for modifications every 3 minutes
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1928 if (!loader_run) break;
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1929 loop1++;
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1930 loop2++;
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1931 if (loop1 == 20) {
192
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1932 // three minutes thru each loop, 20 loops per hour
280
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1933 // clear the recipient hourly counts and hourly sets of ip connection addresses
192
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1934 pthread_mutex_lock(&rate_mutex);
278
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1935 for (rates::iterator i=rcpt_hourly_counts.begin(); i!=rcpt_hourly_counts.end(); i++) {
192
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1936 (*i).second = 0;
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1937 }
278
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1938 for (auth_addresses::iterator j=auth_hourly_addresses.begin(); j!=auth_hourly_addresses.end(); j++) {
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1939 delete (*j).second;
382
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1940 (*j).second = new uint32_t_set;
278
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1941 }
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1942 pthread_mutex_unlock(&rate_mutex);
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1943 loop1 = 0;
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1944 }
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1945 if (loop2 == 480) {
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1946 // three minutes thru each loop, 480 loops per day
280
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1947 // clear the recipient daily counts and daily sets of connection ip addresses
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1948 pthread_mutex_lock(&rate_mutex);
278
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1949 for (rates::iterator i=rcpt_daily_counts.begin(); i!=rcpt_daily_counts.end(); i++) {
255
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1950 (*i).second = 0;
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1951 }
278
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1952 for (auth_addresses::iterator j=auth_daily_addresses.begin(); j!=auth_daily_addresses.end(); j++) {
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1953 delete (*j).second;
382
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1954 (*j).second = new uint32_t_set;
278
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1955 }
255
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1956 pthread_mutex_unlock(&rate_mutex);
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1957 loop2 = 0;
192
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1958 }
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1959 CONFIG &dc = *config;
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1960 time_t then = dc.load_time;
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1961 struct stat st;
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1962 bool reload = false;
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1963 for (string_set::iterator i=dc.config_files.begin(); i!=dc.config_files.end(); i++) {
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1964 const char *fn = *i;
192
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1965 if (stat(fn, &st)) reload = true; // file disappeared
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1966 else if (st.st_mtime > then) reload = true; // file modified
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diff changeset
1967 if (reload) break;
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1968 }
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diff changeset
1969 if (reload) {
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diff changeset
1970 CONFIG *newc = new_conf();
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parents: 191
diff changeset
1971 if (newc) {
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diff changeset
1972 // replace the global config pointer
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diff changeset
1973 pthread_mutex_lock(&config_mutex);
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1974 CONFIG *pc = config;
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diff changeset
1975 bool last = pc && (!pc->reference_count);
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diff changeset
1976 config = newc;
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diff changeset
1977 pthread_mutex_unlock(&config_mutex);
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1978 if (last) delete pc; // there were no references to this config
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diff changeset
1979 }
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1980 else {
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diff changeset
1981 // failed to load new config
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diff changeset
1982 my_syslog("failed to load new configuration");
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diff changeset
1983 system("echo 'failed to load new dnsbl configuration from /etc/dnsbl' | mail -s 'error in /etc/dnsbl configuration' root");
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diff changeset
1984 // update the load time on the current config to prevent complaining every 3 minutes
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parents: 191
diff changeset
1985 dc.load_time = time(NULL);
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parents: 191
diff changeset
1986 }
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diff changeset
1987 }
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parents: 191
diff changeset
1988 }
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parents: 191
diff changeset
1989 return NULL;
94
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parents: 92
diff changeset
1990 }
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parents: 92
diff changeset
1991
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parents: 92
diff changeset
1992
214
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parents: 211
diff changeset
1993 void usage(const char *prog);
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
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parents: 211
diff changeset
1994 void usage(const char *prog)
94
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parents: 92
diff changeset
1995 {
192
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parents: 191
diff changeset
1996 fprintf(stderr, "Usage: %s [-d [level]] [-c] [-s] [-e from|to] [-b dccifd-addr] -r port -p sm-sock-addr [-t timeout]\n", prog);
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parents: 191
diff changeset
1997 fprintf(stderr, "where dccifd_addr is for the connection to dccifd\n");
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parents: 191
diff changeset
1998 fprintf(stderr, " and should be local-domain-socket-file-name\n");
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parents: 191
diff changeset
1999 fprintf(stderr, "where port is for the connection to our own dns resolver processes\n");
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parents: 191
diff changeset
2000 fprintf(stderr, " and should be local-domain-socket-file-name\n");
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parents: 191
diff changeset
2001 fprintf(stderr, "where sm-sock-addr is for the connection to sendmail\n");
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diff changeset
2002 fprintf(stderr, " and should be one of\n");
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parents: 191
diff changeset
2003 fprintf(stderr, " inet:port@ip-address\n");
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parents: 191
diff changeset
2004 fprintf(stderr, " local:local-domain-socket-file-name\n");
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parents: 191
diff changeset
2005 fprintf(stderr, "-c will load and dump the config to stdout\n");
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parents: 191
diff changeset
2006 fprintf(stderr, "-s will stress test the config loading code by repeating the load/free cycle\n");
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parents: 191
diff changeset
2007 fprintf(stderr, " in an infinte loop.\n");
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parents: 191
diff changeset
2008 fprintf(stderr, "-d will set the syslog message level, currently 0 to 3\n");
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parents: 191
diff changeset
2009 fprintf(stderr, "-e will print the results of looking up the from and to addresses in the\n");
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carl
parents: 191
diff changeset
2010 fprintf(stderr, " current config. The | character is used to separate the from and to\n");
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parents: 191
diff changeset
2011 fprintf(stderr, " addresses in the argument to the -e switch\n");
94
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parents: 92
diff changeset
2012 }
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carl
parents: 92
diff changeset
2013
e107ade3b1c0 fix dos line terminators
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parents: 92
diff changeset
2014
e107ade3b1c0 fix dos line terminators
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parents: 92
diff changeset
2015
214
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Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
2016 void setup_socket(const char *sock);
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
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parents: 211
diff changeset
2017 void setup_socket(const char *sock) {
192
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parents: 191
diff changeset
2018 unlink(sock);
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2019 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2020
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2021
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2022 /*
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2023 * The signal handler function -- only gets called when a SIGCHLD
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2024 * is received, ie when a child terminates
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2025 */
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carl
parents: 92
diff changeset
2026 void sig_chld(int signo)
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parents: 92
diff changeset
2027 {
192
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parents: 191
diff changeset
2028 int status;
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parents: 191
diff changeset
2029 /* Wait for any child without blocking */
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parents: 191
diff changeset
2030 while (waitpid(-1, &status, WNOHANG) > 0) {
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parents: 191
diff changeset
2031 // ignore child exit status, we only do this to cleanup zombies
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parents: 191
diff changeset
2032 }
94
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parents: 92
diff changeset
2033 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2034
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2035
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2036 int main(int argc, char**argv)
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carl
parents: 92
diff changeset
2037 {
192
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parents: 191
diff changeset
2038 token_init();
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parents: 191
diff changeset
2039 bool check = false;
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parents: 191
diff changeset
2040 bool stress = false;
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parents: 191
diff changeset
2041 bool setconn = false;
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parents: 191
diff changeset
2042 bool setreso = false;
244
ef97c7cd4a6e const correctness fixes from new gcc, libresolv.a moved to glibc-static on newer distributions
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parents: 242
diff changeset
2043 char *email = NULL;
192
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parents: 191
diff changeset
2044 int c;
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parents: 191
diff changeset
2045 const char *args = "b:r:p:t:e:d:chs";
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parents: 191
diff changeset
2046 extern char *optarg;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2047
235
e6c66640f6f9 Add SRS decoding to envelope addresses
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parents: 233
diff changeset
2048 // setup srs coding detection
296
05b604c99e06 allow broken SRS0+ rather than the correct SRS0= tag
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parents: 293
diff changeset
2049 if (regcomp(&srs_pattern, "^srs(0|1)(=|\\+)([^=]+)=([^=]+)=([^=]+)=([^@]+)@", REG_ICASE | REG_EXTENDED)) {
235
e6c66640f6f9 Add SRS decoding to envelope addresses
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parents: 233
diff changeset
2050 printf("cannot compile regex pattern to find srs coding in mail addresses\n");
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
2051 exit(3);
e6c66640f6f9 Add SRS decoding to envelope addresses
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parents: 233
diff changeset
2052 }
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parents: 233
diff changeset
2053
246
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
2054 // setup prvs coding detection
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
2055 if (regcomp(&prvs_pattern, "^prvs=([^=]+)=(.+)$", REG_ICASE | REG_EXTENDED)) {
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
2056 printf("cannot compile regex pattern to find prvs coding in mail addresses\n");
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
2057 exit(3);
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
2058 }
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
2059
350
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
2060 // setup dkim results signature detection
366
9fc05f3a824f allow upstream opendkim header to be wrapped
Carl Byington <carl@five-ten-sg.com>
parents: 364
diff changeset
2061 if (regcomp(&dkim_r_pattern, "\\sdkim=pass\\s*.[0-9]*-bit key.\\s*header.d=([^ ]+)\\s", REG_ICASE | REG_EXTENDED)) {
364
df45a2377632 allow upstream opendkim header to be wrapped
Carl Byington <carl@five-ten-sg.com>
parents: 358
diff changeset
2062 printf("cannot compile regex pattern to find dkim results signatures\n");
350
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
2063 exit(3);
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
2064 }
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
2065
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
2066 // setup dkim results signature detection
364
df45a2377632 allow upstream opendkim header to be wrapped
Carl Byington <carl@five-ten-sg.com>
parents: 358
diff changeset
2067 if (regcomp(&dkim_s_pattern, "\\sd=([^;]+);", REG_ICASE | REG_EXTENDED)) {
322
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
2068 printf("cannot compile regex pattern to find dkim signatures\n");
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
2069 exit(3);
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
2070 }
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
2071
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
2072 // setup from domain extraction
358
ef7479b2d64f use the last @domain in the from: header
Carl Byington <carl@five-ten-sg.com>
parents: 356
diff changeset
2073 if (regcomp(&from_pattern, ".*@([a-zA-Z0-9.-]+)", REG_ICASE | REG_EXTENDED)) {
322
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
2074 printf("cannot compile regex pattern to find dkim signatures\n");
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
2075 exit(3);
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
2076 }
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
2077
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2078 // Process command line options
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2079 while ((c = getopt(argc, argv, args)) != -1) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2080 switch (c) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2081 case 'b':
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2082 if (optarg == NULL || *optarg == '\0') {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2083 fprintf(stderr, "Illegal dccifd socket: %s\n", optarg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2084 exit(EX_USAGE);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2085 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2086 dccifd_port = strdup(optarg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2087 break;
177
a4d313c2460b start embedded dcc filtering
carl
parents: 174
diff changeset
2088
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2089 case 'r':
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2090 if (optarg == NULL || *optarg == '\0') {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2091 fprintf(stderr, "Illegal resolver socket: %s\n", optarg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2092 exit(EX_USAGE);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2093 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2094 resolver_port = strdup(optarg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2095 setup_socket(resolver_port);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2096 setreso = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2097 break;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2098
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2099 case 'p':
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2100 if (optarg == NULL || *optarg == '\0') {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2101 fprintf(stderr, "Illegal sendmail socket: %s\n", optarg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2102 exit(EX_USAGE);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2103 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2104 if (smfi_setconn(optarg) == MI_FAILURE) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2105 fprintf(stderr, "smfi_setconn failed\n");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2106 exit(EX_SOFTWARE);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2107 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2108 if (strncasecmp(optarg, "unix:", 5) == 0) setup_socket(optarg + 5);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2109 else if (strncasecmp(optarg, "local:", 6) == 0) setup_socket(optarg + 6);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2110 setconn = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2111 break;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2112
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2113 case 't':
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2114 if (optarg == NULL || *optarg == '\0') {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2115 fprintf(stderr, "Illegal timeout: %s\n", optarg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2116 exit(EX_USAGE);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2117 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2118 if (smfi_settimeout(atoi(optarg)) == MI_FAILURE) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2119 fprintf(stderr, "smfi_settimeout failed\n");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2120 exit(EX_SOFTWARE);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2121 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2122 break;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2123
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2124 case 'e':
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
2125 if (email) free((void*)email);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2126 email = strdup(optarg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2127 break;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2128
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2129 case 'c':
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2130 check = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2131 break;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2132
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2133 case 's':
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2134 stress = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2135 break;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2136
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2137 case 'd':
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2138 if (optarg == NULL || *optarg == '\0') debug_syslog = 1;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2139 else debug_syslog = atoi(optarg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2140 break;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2141
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2142 case 'h':
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2143 default:
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2144 usage(argv[0]);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2145 exit(EX_USAGE);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2146 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2147 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2148
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2149 if (check) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2150 use_syslog = false;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2151 debug_syslog = 10;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2152 CONFIG *conf = new_conf();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2153 if (conf) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2154 conf->dump();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2155 delete conf;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2156 clear_strings(); // for valgrind checking
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2157 return 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2158 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2159 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2160 return 1; // config failed to load
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2161 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2162 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2163
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2164 if (stress) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2165 fprintf(stdout, "stress testing\n");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2166 while (1) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2167 for (int i=0; i<10; i++) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2168 CONFIG *conf = new_conf();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2169 if (conf) delete conf;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2170 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2171 fprintf(stdout, ".");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2172 fflush(stdout);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2173 sleep(1);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2174 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2175 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2176
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2177 if (email) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2178 char *x = strchr(email, '|');
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2179 if (x) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2180 *x = '\0';
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
2181 const char *from = to_lower_string(email);
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
2182 const char *to = to_lower_string(x+1);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2183 use_syslog = false;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2184 CONFIG *conf = new_conf();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2185 if (conf) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2186 CONTEXTP con = conf->find_context(to);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2187 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2188 fprintf(stdout, "envelope to <%s> finds context %s\n", to, con->get_full_name(buf,maxlen));
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2189 CONTEXTP fc = con->find_context(from);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2190 fprintf(stdout, "envelope from <%s> finds context %s\n", from, fc->get_full_name(buf,maxlen));
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
2191 const char *st = fc->find_from(from);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2192 fprintf(stdout, "envelope from <%s> finds status %s\n", from, st);
216
784030ac71f1 Never whitelist self addressed mail. Changes for Fedora 10 and const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 214
diff changeset
2193 bool self = (strcmp(from, to) == 0);
784030ac71f1 Never whitelist self addressed mail. Changes for Fedora 10 and const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 214
diff changeset
2194 if ((st == token_white) && self) fprintf(stdout, "ignore self whitelisting\n");
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2195 delete conf;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2196 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2197 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2198 return 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2199 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2200
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2201 if (!setconn) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2202 fprintf(stderr, "%s: Missing required -p argument\n", argv[0]);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2203 usage(argv[0]);
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carl
parents: 191
diff changeset
2204 exit(EX_USAGE);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2205 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2206
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2207 if (!setreso) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2208 fprintf(stderr, "%s: Missing required -r argument\n", argv[0]);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2209 usage(argv[0]);
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carl
parents: 191
diff changeset
2210 exit(EX_USAGE);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2211 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2212
192
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carl
parents: 191
diff changeset
2213 if (smfi_register(smfilter) == MI_FAILURE) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2214 fprintf(stderr, "smfi_register failed\n");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2215 exit(EX_UNAVAILABLE);
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carl
parents: 191
diff changeset
2216 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2217
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2218 // switch to background mode
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2219 if (daemon(1,0) < 0) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2220 fprintf(stderr, "daemon() call failed\n");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2221 exit(EX_UNAVAILABLE);
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carl
parents: 191
diff changeset
2222 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2223
192
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carl
parents: 191
diff changeset
2224 // write the pid
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2225 const char *pidpath = "/var/run/dnsbl.pid";
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carl
parents: 191
diff changeset
2226 unlink(pidpath);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2227 FILE *f = fopen(pidpath, "w");
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carl
parents: 191
diff changeset
2228 if (f) {
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2229 #ifdef linux
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2230 // from a comment in the DCC source code:
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2231 // Linux threads are broken. Signals given the
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2232 // original process are delivered to only the
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2233 // thread that happens to have that PID. The
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2234 // sendmail libmilter thread that needs to hear
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2235 // SIGINT and other signals does not, and that breaks
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2236 // scripts that need to stop milters.
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carl
parents: 191
diff changeset
2237 // However, signaling the process group works.
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carl
parents: 191
diff changeset
2238 fprintf(f, "-%d\n", (u_int)getpgrp());
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2239 #else
192
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carl
parents: 191
diff changeset
2240 fprintf(f, "%d\n", (u_int)getpid());
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2241 #endif
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2242 fclose(f);
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carl
parents: 191
diff changeset
2243 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2244
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2245 // initialize the thread sync objects
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2246 pthread_mutex_init(&config_mutex, 0);
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carl
parents: 191
diff changeset
2247 pthread_mutex_init(&syslog_mutex, 0);
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carl
parents: 191
diff changeset
2248 pthread_mutex_init(&resolve_mutex, 0);
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carl
parents: 191
diff changeset
2249 pthread_mutex_init(&fd_pool_mutex, 0);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2250 pthread_mutex_init(&verifier_mutex, 0);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2251 pthread_mutex_init(&whitelister_mutex, 0);
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2252
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2253 // drop root privs
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carl
parents: 191
diff changeset
2254 struct passwd *pw = getpwnam("dnsbl");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2255 if (pw) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2256 if (setgid(pw->pw_gid) == -1) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2257 my_syslog("failed to switch to group dnsbl");
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carl
parents: 191
diff changeset
2258 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2259 if (setuid(pw->pw_uid) == -1) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2260 my_syslog("failed to switch to user dnsbl");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2261 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2262 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2263
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2264 // load the initial config
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2265 config = new_conf();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2266 if (!config) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2267 my_syslog("failed to load initial configuration, quitting");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2268 exit(1);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2269 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2270
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2271 // fork off the resolver listener process
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2272 pid_t child = fork();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2273 if (child < 0) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2274 my_syslog("failed to create resolver listener process");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2275 exit(0);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2276 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2277 if (child == 0) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2278 // we are the child - dns resolver listener process
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carl
parents: 191
diff changeset
2279 resolver_socket = socket(AF_UNIX, SOCK_STREAM, 0);
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carl
parents: 191
diff changeset
2280 if (resolver_socket < 0) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2281 my_syslog("child failed to create resolver socket");
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carl
parents: 191
diff changeset
2282 exit(0); // failed
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carl
parents: 191
diff changeset
2283 }
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carl
parents: 191
diff changeset
2284 sockaddr_un server;
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carl
parents: 191
diff changeset
2285 memset(&server, '\0', sizeof(server));
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carl
parents: 191
diff changeset
2286 server.sun_family = AF_UNIX;
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carl
parents: 191
diff changeset
2287 strncpy(server.sun_path, resolver_port, sizeof(server.sun_path)-1);
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carl
parents: 191
diff changeset
2288 //try to bind the address to the socket.
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carl
parents: 191
diff changeset
2289 if (bind(resolver_socket, (sockaddr *)&server, sizeof(server)) < 0) {
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carl
parents: 191
diff changeset
2290 // bind failed
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carl
parents: 191
diff changeset
2291 shutdown(resolver_socket, SHUT_RDWR);
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carl
parents: 191
diff changeset
2292 close(resolver_socket);
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carl
parents: 191
diff changeset
2293 my_syslog("child failed to bind resolver socket");
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carl
parents: 191
diff changeset
2294 exit(0); // failed
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carl
parents: 191
diff changeset
2295 }
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carl
parents: 191
diff changeset
2296 //listen on the socket.
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carl
parents: 191
diff changeset
2297 if (listen(resolver_socket, 10) < 0) {
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carl
parents: 191
diff changeset
2298 // listen failed
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carl
parents: 191
diff changeset
2299 shutdown(resolver_socket, SHUT_RDWR);
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carl
parents: 191
diff changeset
2300 close(resolver_socket);
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carl
parents: 191
diff changeset
2301 my_syslog("child failed to listen to resolver socket");
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carl
parents: 191
diff changeset
2302 exit(0); // failed
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carl
parents: 191
diff changeset
2303 }
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carl
parents: 191
diff changeset
2304 // setup sigchld handler to prevent zombies
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carl
parents: 191
diff changeset
2305 struct sigaction act;
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carl
parents: 191
diff changeset
2306 act.sa_handler = sig_chld; // Assign sig_chld as our SIGCHLD handler
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carl
parents: 191
diff changeset
2307 sigemptyset(&act.sa_mask); // We don't want to block any other signals in this example
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carl
parents: 191
diff changeset
2308 act.sa_flags = SA_NOCLDSTOP; // only want children that have terminated
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carl
parents: 191
diff changeset
2309 if (sigaction(SIGCHLD, &act, NULL) < 0) {
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carl
parents: 191
diff changeset
2310 my_syslog("child failed to setup SIGCHLD handler");
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carl
parents: 191
diff changeset
2311 exit(0); // failed
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carl
parents: 191
diff changeset
2312 }
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carl
parents: 191
diff changeset
2313 while (true) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2314 sockaddr_un client;
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carl
parents: 191
diff changeset
2315 socklen_t clientlen = sizeof(client);
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carl
parents: 191
diff changeset
2316 int s = accept(resolver_socket, (sockaddr *)&client, &clientlen);
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carl
parents: 191
diff changeset
2317 if (s > 0) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2318 // accept worked, it did not get cancelled before we could accept it
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carl
parents: 191
diff changeset
2319 // fork off a process to handle this connection
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carl
parents: 191
diff changeset
2320 int newchild = fork();
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carl
parents: 191
diff changeset
2321 if (newchild == 0) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2322 // this is the worker process
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carl
parents: 191
diff changeset
2323 // child does not need the listening socket
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carl
parents: 191
diff changeset
2324 close(resolver_socket);
220
495cfe5caead try to allow mixed -lresolv and libresolv.a for ns_parserr
Carl Byington <carl@five-ten-sg.com>
parents: 216
diff changeset
2325 #ifdef NS_PACKETSZ
495cfe5caead try to allow mixed -lresolv and libresolv.a for ns_parserr
Carl Byington <carl@five-ten-sg.com>
parents: 216
diff changeset
2326 res_init();
495cfe5caead try to allow mixed -lresolv and libresolv.a for ns_parserr
Carl Byington <carl@five-ten-sg.com>
parents: 216
diff changeset
2327 _res.retry = 2;
495cfe5caead try to allow mixed -lresolv and libresolv.a for ns_parserr
Carl Byington <carl@five-ten-sg.com>
parents: 216
diff changeset
2328 _res.retrans = RES_TIMEOUT;
393
dffedbdc8566 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 390
diff changeset
2329 #ifdef RES_USE_EDNS0
389
aa9795b407e8 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 388
diff changeset
2330 _res.options |= RES_USE_EDNS0;
220
495cfe5caead try to allow mixed -lresolv and libresolv.a for ns_parserr
Carl Byington <carl@five-ten-sg.com>
parents: 216
diff changeset
2331 #endif
393
dffedbdc8566 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 390
diff changeset
2332 #endif
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2333 process_resolver_requests(s);
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carl
parents: 191
diff changeset
2334 exit(0);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2335 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2336 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2337 // this is the parent
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carl
parents: 191
diff changeset
2338 // parent does not need the accepted socket
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2339 close(s);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2340 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2341 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2342 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2343 exit(0); // make sure we don't fall thru.
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2344 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2345 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2346 sleep(2); // allow child to get started
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2347 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2348
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2349 // only create threads after the fork() in daemon
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carl
parents: 191
diff changeset
2350 pthread_t tid;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2351 if (pthread_create(&tid, 0, config_loader, 0))
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2352 my_syslog("failed to create config loader thread");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2353 if (pthread_detach(tid))
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2354 my_syslog("failed to detach config loader thread");
153
8d7c439bb6fa add auto whitelisting
carl
parents: 152
diff changeset
2355
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2356 if (pthread_create(&tid, 0, verify_closer, 0))
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2357 my_syslog("failed to create verify closer thread");
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diff changeset
2358 if (pthread_detach(tid))
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2359 my_syslog("failed to detach verify closer thread");
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2360
192
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2361 if (pthread_create(&tid, 0, whitelister_writer, 0))
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diff changeset
2362 my_syslog("failed to create autowhite writer thread");
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diff changeset
2363 if (pthread_detach(tid))
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2364 my_syslog("failed to detach autowhite writer thread");
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2365
192
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2366 time_t starting = time(NULL);
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2367 int rc = smfi_main();
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2368 if ((rc != MI_SUCCESS) && (time(NULL) > starting+5*60)) {
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2369 my_syslog("trying to restart after smfi_main()");
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2370 loader_run = false; // eventually the config loader thread will terminate
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2371 execvp(argv[0], argv);
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2372 }
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2373 exit((rc == MI_SUCCESS) ? 0 : EX_UNAVAILABLE);
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2374 }