annotate src/dnsbl.cpp @ 418:ea4f86e2db42

Added tag stable-6-0-57 for changeset d1976e04f5ba
author Carl Byington <carl@five-ten-sg.com>
date Tue, 25 Apr 2017 21:57:42 -0700
parents 16451edcb962
children 91f2a127ec69
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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 <arpa/nameser.h>
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52 #include <resolv.h>
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53
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54 // misc stuff needed here
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55 #include <ctype.h>
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56 #include <syslog.h>
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57 #include <pwd.h>
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58 #include <sys/wait.h> /* header for waitpid() and various macros */
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59 #include <signal.h> /* header for signal functions */
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60
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61 #include "includes.h"
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62
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63 #ifndef HAVE_DAEMON
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64 #include "daemon.h"
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65 #include "daemon.c"
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66 #endif
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68 #ifndef HAVE_MEMRCHR
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69 void *memrchr(const void *a, int c, size_t len);
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70 void *memrchr(const void *a, int c, size_t len) {
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71 const unsigned char *p = (const unsigned char *)a;
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72 for (p += len-1; (const void *)p >= a; p--)
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73 if (*p == c)
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74 return (void *)p;
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75 return (void *)0;
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76 }
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77 #endif
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78
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79 extern "C" {
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80 sfsistat mlfi_connect(SMFICTX *ctx, char *hostname, _SOCK_ADDR *hostaddr);
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81 sfsistat mlfi_helo(SMFICTX * ctx, char *helohost);
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82 sfsistat mlfi_envfrom(SMFICTX *ctx, char **argv);
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83 sfsistat mlfi_envrcpt(SMFICTX *ctx, char **argv);
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84 sfsistat mlfi_header(SMFICTX* ctx, char* headerf, char* headerv);
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85 sfsistat mlfi_body(SMFICTX *ctx, u_char *data, size_t len);
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86 sfsistat mlfi_eom(SMFICTX *ctx);
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87 sfsistat mlfi_abort(SMFICTX *ctx);
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88 sfsistat mlfi_close(SMFICTX *ctx);
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89 void sig_chld(int signo);
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90 }
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91
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92 int debug_syslog = 0;
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93 bool syslog_opened = false;
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94 bool use_syslog = true; // false to printf
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95 bool loader_run = true; // used to stop the config loader thread
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96 CONFIG *config = NULL; // protected by the config_mutex
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97 int generation = 0; // protected by the config_mutex
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98 const int maxlen = 1000; // used for snprintf buffers
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99 regex_t srs_pattern; // used to detect srs coding in mail addresses
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100 regex_t prvs_pattern; // used to detect prvs coding in mail addresses
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101 regex_t dkim_r_pattern; // used to detect dkim signatures authenticated by the upstream opendkim milter
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102 regex_t dkim_s_pattern; // used to detect dkim signatures generated by the upstream opendkim milter
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103 regex_t from_pattern; // used to extract the senders mail domain from the body from: header
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104
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105 pthread_mutex_t config_mutex;
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106 pthread_mutex_t syslog_mutex;
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107 pthread_mutex_t resolve_mutex;
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108 pthread_mutex_t fd_pool_mutex;
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109 pthread_mutex_t rate_mutex;
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110
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111 std::set<int> fd_pool;
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112 int NULL_SOCKET = -1;
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113 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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114 const char *resolver_port = NULL; // unix domain socket to talk to the dns resolver process
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115 int resolver_socket = NULL_SOCKET; // socket used to listen for resolver requests
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116 const char *dccifd_port = NULL; // unix domain socket to talk to the dcc interface daemon
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117 time_t last_error_time = 0;
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118 int resolver_sock_count = 0; // protected with fd_pool_mutex
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119 int resolver_pool_size = 0; // protected with fd_pool_mutex
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120 rates rcpt_hourly_counts; // protected with rate_mutex
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121 rates rcpt_daily_counts; // protected with rate_mutex
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122 auth_addresses auth_hourly_addresses; // protected with rate_mutex
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123 auth_addresses auth_daily_addresses; // protected with rate_mutex
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127 ns_map::~ns_map() {
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128 for (string_map::iterator i=ns_host.begin(); i!=ns_host.end(); i++) {
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129 const char *x = (*i).first;
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130 const char *y = (*i).second;
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131 free((void*)x);
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132 free((void*)y);
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133 }
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134 ns_ip.clear();
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135 ns_host.clear();
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136 }
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138
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139 void ns_map::add(const char *name, const char *refer) {
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140 string_map::iterator i = ns_host.find(name);
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141 if (i != ns_host.end()) return;
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142 char *x = strdup(name);
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143 char *y = strdup(refer);
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144 ns_ip[x] = 0;
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145 ns_host[x] = y;
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146
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147 }
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148
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149 // packed structure to allow a single socket write to dump the
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150 // length and the following answer. The packing attribute is gcc specific.
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151 struct glommer {
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152 size_t length;
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153 #ifdef NS_PACKETSZ
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154 u_char answer[NS_PACKETSZ*8]; // with a resolver, we return resolver answers
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155 #else
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156 uint32_t answer; // without a resolver, we return a single ipv4 address in network byte order, 0 == no answer
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157 #endif
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158 } __attribute__ ((packed));
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159
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160
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161 ////////////////////////////////////////////////
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162 // helper to manipulate recipient counts
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163 //
255
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164 void incr_rcpt_count(const char *user, int &hourly, int &daily);
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165 void incr_rcpt_count(const char *user, int &hourly, int &daily) {
192
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166 pthread_mutex_lock(&rate_mutex);
278
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167 rates::iterator i = rcpt_hourly_counts.find(user);
255
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168 hourly = 1;
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169 if (i == rcpt_hourly_counts.end()) {
192
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170 user = strdup(user);
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171 rcpt_hourly_counts[user] = hourly;
192
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172 }
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173 else {
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174 hourly = ++((*i).second);
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175 }
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176
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177 rates::iterator j = rcpt_daily_counts.find(user);
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178 daily = 1;
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179 if (j == rcpt_daily_counts.end()) {
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180 user = strdup(user);
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181 rcpt_daily_counts[user] = daily;
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182 }
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183 else {
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184 daily = ++((*j).second);
192
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185 }
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186 pthread_mutex_unlock(&rate_mutex);
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187 }
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188
278
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189
382
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190 void add_auth_address(const char *user, int &hourly, int &daily, uint32_t ip);
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191 void add_auth_address(const char *user, int &hourly, int &daily, uint32_t ip) {
278
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192 pthread_mutex_lock(&rate_mutex);
280
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193 auth_addresses::iterator i = auth_hourly_addresses.find(user);
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194 if (i == auth_hourly_addresses.end()) {
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195 user = strdup(user);
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196 auth_hourly_addresses[user] = new uint32_t_set;
278
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197 auth_hourly_addresses[user]->insert(ip);
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198 hourly = 1;
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199 }
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200 else {
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201 uint32_t_set::iterator k = ((*i).second)->find(ip);
280
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202 if (k == ((*i).second)->end()) ((*i).second)->insert(ip);
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203 hourly = ((*i).second)->size();
278
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204 }
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205
280
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206 auth_addresses::iterator j = auth_daily_addresses.find(user);
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207 if (j == auth_daily_addresses.end()) {
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208 user = strdup(user);
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209 auth_daily_addresses[user] = new uint32_t_set;
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210 auth_daily_addresses[user]->insert(ip);
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211 daily = 1;
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212 }
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213 else {
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214 uint32_t_set::iterator k = ((*j).second)->find(ip);
280
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215 if (k == ((*j).second)->end()) ((*j).second)->insert(ip);
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216 daily = ((*j).second)->size();
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217 }
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218 pthread_mutex_unlock(&rate_mutex);
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219 }
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220
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221 ////////////////////////////////////////////////
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222 // helper to discard the strings held by a context_map
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223 //
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224 void discard(context_map &cm);
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225 void discard(context_map &cm) {
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226 for (context_map::iterator i=cm.begin(); i!=cm.end(); i++) {
214
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227 const char *x = (*i).first;
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228 free((void*)x);
192
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229 }
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230 cm.clear();
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231 }
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232
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233
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234 ////////////////////////////////////////////////
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235 // helper to register a string in a context_map
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236 //
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237 void register_string(context_map &cm, const char *name, CONTEXT *con);
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238 void register_string(context_map &cm, const char *name, CONTEXT *con) {
192
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239 context_map::iterator i = cm.find(name);
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240 if (i != cm.end()) return;
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241 char *x = strdup(name);
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242 cm[x] = con;
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243 }
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244
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245
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246 ////////////////////////////////////////////////
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247 // disconnect the fd from the dns resolver process
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248 //
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249 void my_disconnect(int sock, bool decrement = true);
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250 void my_disconnect(int sock, bool decrement) {
192
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251 if (sock != NULL_SOCKET) {
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252 if (decrement) {
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253 pthread_mutex_lock(&fd_pool_mutex);
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254 resolver_sock_count--;
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255 pthread_mutex_unlock(&fd_pool_mutex);
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256 }
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257 shutdown(sock, SHUT_RDWR);
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258 close(sock);
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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 ////////////////////////////////////////////////
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264 // return fd connected to the dns resolver process
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265 //
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266 int my_connect();
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267 int my_connect() {
192
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268 // if we have had recent errors, don't even try to open the socket
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269 if ((time(NULL) - last_error_time) < ERROR_SOCKET_TIME) return NULL_SOCKET;
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270
192
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271 // nothing recent, maybe this time it will work
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272 int sock = NULL_SOCKET;
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273 sockaddr_un server;
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274 memset(&server, '\0', sizeof(server));
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275 server.sun_family = AF_UNIX;
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276 strncpy(server.sun_path, resolver_port, sizeof(server.sun_path)-1);
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277 sock = socket(AF_UNIX, SOCK_STREAM, 0);
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278 if (sock != NULL_SOCKET) {
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279 bool rc = (connect(sock, (sockaddr *)&server, sizeof(server)) == 0);
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280 if (!rc) {
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281 my_disconnect(sock, false);
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282 sock = NULL_SOCKET;
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283 last_error_time = time(NULL);
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284 }
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285 }
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286 else last_error_time = time(NULL);
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287 if (sock != NULL_SOCKET) {
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288 pthread_mutex_lock(&fd_pool_mutex);
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289 resolver_sock_count++;
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290 pthread_mutex_unlock(&fd_pool_mutex);
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291 }
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292 return sock;
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293 }
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294
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295
236
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296 ////////////////////////////////////////////////
381
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297 // Ask a dns question and get an A record answer in network byte order.
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298 // We don't try very hard, just using the default resolver retry settings.
236
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299 // If we cannot get an answer, we just accept the mail.
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300 // If the qtype is ns_t_txt, the answer is placed in my_answer which
381
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301 // must be non-null, and the return value can be ignored.
414
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diff changeset
302 // A null string is returned in my_answer in the case of errors.
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parents: 410
diff changeset
303 // 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
304 // and if my_answer is non-null, all the ip addresses are returned in
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parents: 410
diff changeset
305 // 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
306 // IP address 0 is returned in case of errors.
236
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parents: 235
diff changeset
307 //
414
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Carl Byington <carl@five-ten-sg.com>
parents: 410
diff changeset
308 uint32_t dns_interface(mlfiPriv &priv, const char *question, int qtype, bool maybe_ip, ns_map *nameservers, char *my_answer, size_t my_size) {
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
309 if (my_answer) my_answer[0] = '\0'; // return null string if there are no txt answers
382
c378e9d03f37 start parsing spf txt records
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parents: 381
diff changeset
310
236
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parents: 235
diff changeset
311 // tell sendmail we are still working
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parents: 235
diff changeset
312 #if _FFR_SMFI_PROGRESS
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parents: 235
diff changeset
313 if (priv.eom) smfi_progress(priv.ctx);
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parents: 235
diff changeset
314 #endif
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parents: 235
diff changeset
315
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parents: 235
diff changeset
316 // this part can be done without locking the resolver mutex. Each
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parents: 235
diff changeset
317 // milter thread is talking over its own socket to a separate resolver
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parents: 235
diff changeset
318 // process, which does the actual dns resolution.
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parents: 235
diff changeset
319 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
320 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
321 int c = 0;
410
6b03435868cb require 3 dots in bare ip addresses
Carl Byington <carl@five-ten-sg.com>
parents: 409
diff changeset
322 const char* q = question;
409
e018ed19a1cc require 3 dots in bare ip addresses
Carl Byington <carl@five-ten-sg.com>
parents: 402
diff changeset
323 while (*q) {
e018ed19a1cc require 3 dots in bare ip addresses
Carl Byington <carl@five-ten-sg.com>
parents: 402
diff changeset
324 if (*q == '.') c++;
e018ed19a1cc require 3 dots in bare ip addresses
Carl Byington <carl@five-ten-sg.com>
parents: 402
diff changeset
325 q++;
e018ed19a1cc require 3 dots in bare ip addresses
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parents: 402
diff changeset
326 }
e018ed19a1cc require 3 dots in bare ip addresses
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parents: 402
diff changeset
327 // might be a bare IPv4 address, try this first to avoid dns lookups that may not be needed
236
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parents: 235
diff changeset
328 in_addr ip;
409
e018ed19a1cc require 3 dots in bare ip addresses
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parents: 402
diff changeset
329 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
330 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
331 }
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diff changeset
332 }
381
879a470c6ac3 fetch spf txt records for required dkim signers
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parents: 379
diff changeset
333 int8_t qt = qtype;
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parents: 379
diff changeset
334 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
335 size_t n = strlen(question);
236
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parents: 235
diff changeset
336 if (question[n-1] == '.') {
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parents: 235
diff changeset
337 priv.my_write(question, n+1); // write the question including the null terminator
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parents: 235
diff changeset
338 }
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parents: 235
diff changeset
339 else {
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parents: 235
diff changeset
340 priv.my_write(question, n); // write the question
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parents: 235
diff changeset
341 priv.my_write(".", 2); // and the fully qualified . terminator and null string terminator
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parents: 235
diff changeset
342 }
381
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parents: 379
diff changeset
343
236
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parents: 235
diff changeset
344 glommer glom;
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parents: 235
diff changeset
345 char *buf = (char *)&glom;
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parents: 235
diff changeset
346 priv.my_read(buf, sizeof(glom.length));
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parents: 235
diff changeset
347 buf += sizeof(glom.length);
390
bcef093b1ba6 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 389
diff changeset
348 #ifdef RESOLVER_DEBUG
236
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parents: 235
diff changeset
349 char text[1000];
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parents: 235
diff changeset
350 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
351 my_syslog(text);
390
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parents: 389
diff changeset
352 #endif
236
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parents: 235
diff changeset
353 if (glom.length == 0) return 0;
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parents: 235
diff changeset
354 if (glom.length > sizeof(glom.answer)) {
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parents: 235
diff changeset
355 priv.err = true;
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parents: 235
diff changeset
356 return 0; // cannot process overlarge answers
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parents: 235
diff changeset
357 }
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parents: 235
diff changeset
358 priv.my_read(buf, glom.length);
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parents: 235
diff changeset
359
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parents: 235
diff changeset
360 #ifdef NS_PACKETSZ
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parents: 235
diff changeset
361 // now we need to lock the resolver mutex to keep the milter threads from
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parents: 235
diff changeset
362 // 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
363 uint32_t ret_address = 0;
236
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parents: 235
diff changeset
364 pthread_mutex_lock(&resolve_mutex);
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parents: 235
diff changeset
365 // parse the answer
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parents: 235
diff changeset
366 ns_msg handle;
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parents: 235
diff changeset
367 ns_rr rr;
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parents: 235
diff changeset
368 if (ns_initparse(glom.answer, glom.length, &handle) == 0) {
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
369 // look for ns names
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parents: 235
diff changeset
370 if (nameservers) {
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parents: 235
diff changeset
371 ns_map &ns = *nameservers;
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parents: 235
diff changeset
372 int rrnum = 0;
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parents: 235
diff changeset
373 while (ns_parserr(&handle, ns_s_ns, rrnum++, &rr) == 0) {
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parents: 235
diff changeset
374 if (ns_rr_type(rr) == ns_t_ns) {
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parents: 235
diff changeset
375 char nam[NS_MAXDNAME+1];
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parents: 235
diff changeset
376 char *n = nam;
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parents: 235
diff changeset
377 const u_char *p = ns_rr_rdata(rr);
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parents: 235
diff changeset
378 while (((n-nam) < NS_MAXDNAME) && ((size_t)(p-glom.answer) < glom.length) && *p) {
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parents: 235
diff changeset
379 size_t s = *(p++);
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parents: 235
diff changeset
380 if (s > 191) {
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parents: 235
diff changeset
381 // compression pointer
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parents: 235
diff changeset
382 s = (s-192)*256 + *(p++);
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parents: 235
diff changeset
383 if (s >= glom.length) break; // pointer outside bounds of answer
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parents: 235
diff changeset
384 p = glom.answer + s;
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parents: 235
diff changeset
385 s = *(p++);
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parents: 235
diff changeset
386 }
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parents: 235
diff changeset
387 if (s > 0) {
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Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
388 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
389 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
390 memcpy(n, p, s);
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parents: 235
diff changeset
391 n += s;
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Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
392 p += s;
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parents: 235
diff changeset
393 *(n++) = '.';
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
394 }
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 }
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Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
396 if (n-nam) n--; // remove trailing .
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parents: 235
diff changeset
397 *n = '\0'; // null terminate it
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parents: 235
diff changeset
398 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
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parents: 235
diff changeset
399 }
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 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
402 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
403 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
404 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
405 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
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parents: 235
diff changeset
406 if (i != ns.ns_ip.end()) {
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
407 // 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
408 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
409 memcpy(&address, ns_rr_rdata(rr), sizeof(address));
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parents: 235
diff changeset
410 ns.ns_ip[nam] = address;
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
411 }
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 int rrnum = 0;
381
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
416 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
417 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
418 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
419 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
420 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
421 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
422 uint32_t address;
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
423 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
424 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
425 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
426 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
427 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
428 }
381
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
429 }
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
430 }
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
431 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
432 }
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
433 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
434 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
435 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
436 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
437 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
438 //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
439 //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
440 const unsigned char *rdata = ns_rr_rdata(rr);
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 int len = dn_expand(glom.answer, glom.answer+glom.length, rdata + 2, exchange, sizeof(exchange));
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
442 if ((len > 0) && (my_size > (uint32_t)len+2)) {
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
443 strcpy(my_answer, exchange);
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
444 my_answer += len + 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
445 my_size -= len + 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
446 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
447 }
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
448 }
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
449 }
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
450 *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
451 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
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 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
454 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
455 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
456 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
457 if (ns_rr_type(rr) == qtype) {
384
7b7066a51c33 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 382
diff changeset
458 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
459 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
460 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
461 #ifdef RESOLVER_DEBUG
385
be7355b47051 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 384
diff changeset
462 char text[1000];
be7355b47051 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 384
diff changeset
463 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
464 my_syslog(text);
390
bcef093b1ba6 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 389
diff changeset
465 #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
466 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
467 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
468 rdlen--;
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
469 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
470 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
471 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
472 offset += m;
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
473 rdata += m;
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
474 rdlen -= m;
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
475 }
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
476 my_answer[offset] = '\0'; // trailing null
390
bcef093b1ba6 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 389
diff changeset
477 #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
478 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
479 my_syslog(text);
390
bcef093b1ba6 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 389
diff changeset
480 #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
481 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
482 }
382
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
483 }
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
484 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
485 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
486 }
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
487 }
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
488 }
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
489 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
490 #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
491 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
492 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
493 #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
494 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
495 #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
496 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
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 }
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
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
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 ////////////////////////////////////////////////
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
502 // 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
503 //
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
504 // 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
505 // 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
506 // 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
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 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
509 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
510 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
511 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
512 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
513 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
514 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
515 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
516 snprintf(tmp, sizeof(tmp), "found %s on %s", hostname, priv.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
517 my_syslog(tmp);
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 }
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 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
520 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
521 }
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 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
523 }
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
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 ////////////////////////////////////////////////
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 // 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
528 // -------------
270
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diff changeset
529 // 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
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diff changeset
530 // 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
531 // the uribl, return true and point found to the part of the
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parents: 268
diff changeset
532 // hostname that we found as a string registered in hosts.
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Carl Byington <carl@five-ten-sg.com>
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diff changeset
533 // 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
534 //
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
535 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
536 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
537 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
538 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
539 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
540 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
541 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
542 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
543 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
544 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
545 hostname = c+1;
236
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Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
546 }
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
547 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
548 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
549 string_set *tldnots = priv.memory->get_tldnots();
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
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parents: 268
diff changeset
550 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
551 string_set::iterator xtldwilds = tldwilds->end();
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::iterator xtldnots = tldnots->end();
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
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parents: 268
diff changeset
553 for (int i=max(0,n-4); i<n; i++) {
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
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parents: 268
diff changeset
554 const char* name = components[i];
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
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parents: 268
diff changeset
555 bool rc = false;
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
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parents: 268
diff changeset
556 string_set::iterator tt = tldnots->find(name);
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
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parents: 268
diff changeset
557 if (tt != xtldnots) {
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
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parents: 268
diff changeset
558 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
559 }
270
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
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parents: 268
diff changeset
560 else {
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
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parents: 268
diff changeset
561 tt = tldwilds->find(name);
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
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parents: 268
diff changeset
562 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
563 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
564 rc = true;
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
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parents: 268
diff changeset
565 name = components[i-2];
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
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parents: 268
diff changeset
566 }
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
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parents: 268
diff changeset
567 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
568 }
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 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
570 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
571 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
572 if (i > 0) {
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
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parents: 268
diff changeset
573 rc = true;
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
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parents: 268
diff changeset
574 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
575 }
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 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
577 }
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 }
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 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
581 return uriblookup(priv, hosts, name, found);
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
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parents: 268
diff changeset
582 }
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
583 }
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
584 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
585 }
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
586
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
587
94
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diff changeset
588 mlfiPriv::mlfiPriv() {
192
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carl
parents: 191
diff changeset
589 pthread_mutex_lock(&config_mutex);
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diff changeset
590 pc = config;
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diff changeset
591 pc->reference_count++;
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diff changeset
592 pthread_mutex_unlock(&config_mutex);
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parents: 191
diff changeset
593 get_fd();
230
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diff changeset
594 ctx = NULL;
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Carl Byington <carl@five-ten-sg.com>
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595 eom = false;
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
596 ip = 0;
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
597 helo = NULL;
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
598 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
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parents: 348
diff changeset
599 origaddr = NULL;
321
e172dc10fe24 add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 311
diff changeset
600 fromaddr = NULL;
e172dc10fe24 add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 311
diff changeset
601 header_count = 0;
322
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
602 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
603 queueid = NULL;
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
604 authenticated = NULL;
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
605 client_name = NULL;
257
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Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
606 client_dns_name = NULL;
268
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
607 client_dns_forged = false;
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
608 host_uribl = NULL;
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
609 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
610 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
611 from_uribl = false;
230
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
612 have_whites = false;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
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parents: 227
diff changeset
613 only_whites = true;
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
614 want_spamassassin = false;
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
615 want_dccgrey = false;
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
616 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
617 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
618 content_context = NULL;
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parents: 227
diff changeset
619 memory = NULL;
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parents: 227
diff changeset
620 scanner = NULL;
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
621 content_suffix = NULL;
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
622 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
623 uribl_suffix = NULL;
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
624 uribl_message = NULL;
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
625 content_host_ignore = NULL;
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
626 assassin = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
627 dccifd = NULL;
94
e107ade3b1c0 fix dos line terminators
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parents: 92
diff changeset
628 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
629
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
630 mlfiPriv::~mlfiPriv() {
192
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carl
parents: 191
diff changeset
631 return_fd();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
632 pthread_mutex_lock(&config_mutex);
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carl
parents: 191
diff changeset
633 pc->reference_count--;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
634 bool last = (!pc->reference_count) && (pc != config);
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carl
parents: 191
diff changeset
635 pthread_mutex_unlock(&config_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
636 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
637 if (helo) free((void*)helo);
192
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carl
parents: 191
diff changeset
638 reset(true);
94
e107ade3b1c0 fix dos line terminators
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parents: 92
diff changeset
639 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
640
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
641 void mlfiPriv::reset(bool final) {
194
688ec12a3c0c delay autowhitelisting to avoid out of office reply bots
carl
parents: 193
diff changeset
642 while (!delayer.empty()) {
231
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
643 DELAYWHITEP dwp = delayer.front();
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
644 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
645 if (loto) free((void*)loto);
193
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carl
parents: 192
diff changeset
646 delete dwp;
3ea79ef741a0 delay autowhitelisting to avoid out of office reply bots
carl
parents: 192
diff changeset
647 delayer.pop_front();
3ea79ef741a0 delay autowhitelisting to avoid out of office reply bots
carl
parents: 192
diff changeset
648 }
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
649 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
650 if (origaddr) free((void*)origaddr);
321
e172dc10fe24 add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 311
diff changeset
651 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
652 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
653 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
654 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
655 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
656 discard(dkim_signers);
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
657 discard(hosts_uribl);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
658 delayer.clear();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
659 discard(env_to);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
660 if (memory) delete memory;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
661 if (scanner) delete scanner;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
662 if (assassin) delete assassin;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
663 if (dccifd) delete dccifd;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
664 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
665 ctx = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
666 eom = false;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
667 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
668 origaddr = NULL;
321
e172dc10fe24 add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 311
diff changeset
669 fromaddr = NULL;
e172dc10fe24 add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 311
diff changeset
670 header_count = 0;
322
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
671 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
672 queueid = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
673 authenticated = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
674 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
675 client_dns_name = NULL;
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
676 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
677 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
678 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
679 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
680 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
681 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
682 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
683 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
684 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
685 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
686 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
687 memory = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
688 scanner = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
689 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
690 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
691 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
692 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
693 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
694 assassin = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
695 dccifd = NULL;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
696 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
697 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
698
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
699 void mlfiPriv::get_fd() {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
700 err = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
701 fd = NULL_SOCKET;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
702 int result = pthread_mutex_lock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
703 if (!result) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
704 std::set<int>::iterator i;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
705 i = fd_pool.begin();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
706 if (i != fd_pool.end()) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
707 // have at least one fd in the pool
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
708 err = false;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
709 fd = *i;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
710 fd_pool.erase(fd);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
711 resolver_pool_size--;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
712 pthread_mutex_unlock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
713 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
714 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
715 // pool is empty, get a new fd
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 fd = my_connect();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
718 err = (fd == NULL_SOCKET);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
719 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
720 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
721 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
722 // cannot lock the pool, just get a new fd
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
723 fd = my_connect();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
724 err = (fd == NULL_SOCKET);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
725 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
726 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
727
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
728 void mlfiPriv::return_fd() {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
729 if (err) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
730 // 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
731 my_disconnect(fd);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
732 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
733 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
734 int result = pthread_mutex_lock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
735 if (!result) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
736 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
737 // return the fd to the pool
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
738 fd_pool.insert(fd);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
739 resolver_pool_size++;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
740 pthread_mutex_unlock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
741 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
742 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
743 // 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
744 // 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
745 pthread_mutex_unlock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
746 my_disconnect(fd);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
747 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
748 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
749 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
750 // 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
751 my_disconnect(fd);
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 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
754 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
755
177
a4d313c2460b start embedded dcc filtering
carl
parents: 174
diff changeset
756 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
757 if (err) return 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
758 size_t rs = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
759 while (len) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
760 size_t ws = write(fd, buf, len);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
761 if (ws > 0) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
762 rs += ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
763 len -= ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
764 buf += ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
765 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
766 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
767 // peer closed the socket!
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
768 rs = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
769 err = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
770 break;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
771 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
772 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
773 return rs;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
774 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
775
177
a4d313c2460b start embedded dcc filtering
carl
parents: 174
diff changeset
776 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
777 if (err) return 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
778 size_t rs = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
779 while (len) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
780 size_t ws = read(fd, buf, len);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
781 if (ws > 0) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
782 rs += ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
783 len -= ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
784 buf += ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
785 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
786 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
787 // peer closed the socket!
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
788 rs = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
789 err = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
790 break;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
791 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
792 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
793 return rs;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
794 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
795
377
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
796 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
797 if (uribl_suffix) {
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
798 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
799 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
800 }
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
801 }
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
802 return NULL;
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
803 }
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
804
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
805 void mlfiPriv::need_content_filter(CONTEXT &con) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
806 if (!memory) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
807 // first recipient that needs content filtering sets
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
808 // 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
809 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
810 scanner = new url_scanner(memory);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
811 content_suffix = con.get_content_suffix();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
812 content_message = con.get_content_message();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
813 uribl_suffix = con.get_uribl_suffix();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
814 uribl_message = con.get_uribl_message();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
815 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
816 // 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
817 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
818 if (helo) {
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
819 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
820 }
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
821 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
822 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
823 }
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 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
825 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
826 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
827 }
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
828 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
829 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
830 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
831
186
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
832
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
833 mlfiPriv* fetch_priv_from_ctx(SMFICTX *ctx);
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
834 mlfiPriv* fetch_priv_from_ctx(SMFICTX *ctx)
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
835 {
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
836 mlfiPriv *priv = (struct mlfiPriv *)smfi_getpriv(ctx);
187
f0eda59e8afd fix null pointer dereference from missing HELO command
carl
parents: 186
diff changeset
837 priv->ctx = ctx;
186
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
838 return priv;
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 #define MLFIPRIV fetch_priv_from_ctx(ctx)
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
841
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
842
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
843
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
844 ////////////////////////////////////////////////
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
845 // syslog a message
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
846 //
310
802e2b779ed1 enable smtp verify logging
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
847 void my_syslog(const char *queueid, const char *text) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
848 char buf[maxlen];
311
f5547e7b3a09 enable smtp verify logging
Carl Byington <carl@five-ten-sg.com>
parents: 310
diff changeset
849 if (queueid && queueid[0]) {
310
802e2b779ed1 enable smtp verify logging
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
850 snprintf(buf, sizeof(buf), "%s: %s", queueid, text);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
851 text = buf;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
852 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
853 if (use_syslog) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
854 pthread_mutex_lock(&syslog_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
855 if (!syslog_opened) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
856 openlog("dnsbl", LOG_PID, LOG_MAIL);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
857 syslog_opened = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
858 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
859 syslog(LOG_NOTICE, "%s", text);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
860 pthread_mutex_unlock(&syslog_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
861 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
862 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
863 printf("%s \n", text);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
864 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
865 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
866
310
802e2b779ed1 enable smtp verify logging
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
867 void my_syslog(mlfiPriv *priv, const char *text) {
802e2b779ed1 enable smtp verify logging
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
868 if (priv) my_syslog(priv->queueid, text);
802e2b779ed1 enable smtp verify logging
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
869 else my_syslog((const char *)NULL, text);
802e2b779ed1 enable smtp verify logging
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
870 }
802e2b779ed1 enable smtp verify logging
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
871
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
872 void my_syslog(mlfiPriv *priv, const string text) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
873 if (debug_syslog > 3) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
874 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
875 strncpy(buf, text.c_str(), sizeof(buf));
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
876 buf[maxlen-1] = '\0'; // ensure null termination
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
877 my_syslog(priv, buf);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
878 }
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
879 }
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
880
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
881 void my_syslog(const char *text) {
310
802e2b779ed1 enable smtp verify logging
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
882 my_syslog((const char *)NULL, text);
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
883 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
884
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
885
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
886 ////////////////////////////////////////////////
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
887 // 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
888 // write the result back to the socket.
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
889
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
890 void process_resolver_requests(int socket);
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
891 void process_resolver_requests(int socket) {
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
892 #ifdef NS_MAXDNAME
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
893 char question[NS_MAXDNAME];
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
894 #else
389
aa9795b407e8 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 388
diff changeset
895 char question[1025];
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
896 #endif
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
897 glommer glom;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
898
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
899 int maxq = sizeof(question);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
900 while (true) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
901 // read a question
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
902 int rs = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
903 while (rs < maxq) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
904 int ns = read(socket, question+rs, maxq-rs);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
905 if (ns > 0) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
906 rs += ns;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
907 if (question[rs-1] == '\0') {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
908 // 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
909 break;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
910 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
911 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
912 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
913 // peer closed the socket
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
914 #ifdef RESOLVER_DEBUG
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
915 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
916 #endif
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
917 shutdown(socket, SHUT_RDWR);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
918 close(socket);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
919 return;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
920 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
921 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
922 question[rs-1] = '\0'; // ensure null termination
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
923
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
924 // find the answer
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
925 #ifdef NS_PACKETSZ
388
2354a1944e49 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 387
diff changeset
926 int qt = int8_t(question[0]);
2354a1944e49 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 387
diff changeset
927 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
928 #ifdef RESOLVER_DEBUG
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
929 char text[1000];
387
616e46e9b8f0 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 386
diff changeset
930 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
931 question+1, qt, sizeof(glom.answer), res_result);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
932 my_syslog(text);
390
bcef093b1ba6 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 389
diff changeset
933 #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
934 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
935 else glom.length = (size_t)res_result;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
936 #else
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
937 glom.length = sizeof(glom.answer);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
938 glom.answer = 0;
382
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
939 int t = int8_t(question[0]);
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
940 if (t != ns_t_a) {
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
941 glom.length = 0;
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
942 }
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
943 else {
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
944 struct hostent *host = gethostbyname(question+1);
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
945 if (host && (host->h_addrtype == AF_INET)) {
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
946 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
947 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
948 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
949 #endif
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
950
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
951 // write the answer
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
952 char *buf = (char *)&glom;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
953 int len = glom.length + sizeof(glom.length);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
954 #ifdef RESOLVER_DEBUG
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
955 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
956 my_syslog(text);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
957 #endif
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
958 int ws = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
959 while (len > ws) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
960 int ns = write(socket, buf+ws, len-ws);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
961 if (ns > 0) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
962 ws += ns;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
963 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
964 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
965 // peer closed the socket!
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
966 #ifdef RESOLVER_DEBUG
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
967 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
968 #endif
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
969 shutdown(socket, SHUT_RDWR);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
970 close(socket);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
971 return;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
972 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
973 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
974 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
975 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
976
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
977
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
978 ////////////////////////////////////////////////
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
979 // check a single dns list, return ip address in network byte order
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
980 //
382
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
981 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
982 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
983 // make a dns question
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
984 const u_char *src = (const u_char *)&ip;
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
985 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
986 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
987 if ((src[0] == 192) && (src[1] == 168)) return 0;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
988 if ((src[0] == 172) && (16 <= src[1]) && (src[1] <= 31)) return 0;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
989 #ifdef NS_MAXDNAME
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
990 char question[NS_MAXDNAME];
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
991 #else
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
992 char question[1000];
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
993 #endif
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
994 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
995 // 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
996 return dns_interface(priv, question, ns_t_a);
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
997 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
998
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
999
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1000 ////////////////////////////////////////////////
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1001 // check a single dnsbl
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1002 //
382
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
1003 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
1004 bool check_single(mlfiPriv &priv, uint32_t ip, DNSBL &bl) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1005 return check_single(priv, ip, bl.suffix);
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1006 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1007
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1008
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1009 ////////////////////////////////////////////////
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1010 // check a single dnswl
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1011 //
382
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
1012 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
1013 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
1014 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
1015 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
1016 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
1017 uint32_t m2 = (uint32_t)0x000000ff;
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1018 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
1019 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
1020 if ((int)l >= wl.level) return true;
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1021 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1022 return false;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1023 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1024
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1025
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1026 ////////////////////////////////////////////////
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1027 // check the dnsbls specified for this recipient
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1028 //
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1029 bool check_dnsbl(mlfiPriv &priv, dnsblp_list &dnsbll, DNSBLP &rejectlist);
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1030 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
1031 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
1032 DNSBLP dp = *i; // non null by construction
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1033 bool st;
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1034 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
1035 if (f == priv.checked_black.end()) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1036 // have not checked this list yet
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1037 st = check_single(priv, priv.ip, *dp);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1038 rejectlist = dp;
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1039 priv.checked_black[dp] = st;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1040 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1041 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1042 st = (*f).second;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1043 rejectlist = (*f).first;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1044 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1045 if (st) return st;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1046 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1047 return false;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1048 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1049
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1050
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1051 ////////////////////////////////////////////////
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1052 // check the dnswls specified for this recipient
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1053 //
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1054 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
1055 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
1056 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
1057 DNSWLP dp = *i; // non null by construction
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1058 bool st;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1059 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
1060 if (f == priv.checked_white.end()) {
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1061 // have not checked this list yet
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1062 st = check_single(priv, priv.ip, *dp);
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1063 acceptlist = dp;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1064 priv.checked_white[dp] = st;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1065 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1066 else {
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1067 st = (*f).second;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1068 acceptlist = (*f).first;
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 if (st) return st;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1071 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1072 return false;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1073 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1074
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1075
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1076 ////////////////////////////////////////////////
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1077 // check the hosts from the body against the content filter and uribl dnsbls
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1078 //
124
ea6f9c812faa put hostname in smtp message for uribl style lookups
carl
parents: 123
diff changeset
1079 //
382
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
1080 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
1081 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
1082 found = NULL; // normally ip address style
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1083 if (!priv.content_suffix && !priv.uribl_suffix) return false; // nothing to check
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1084 string_set &hosts = priv.memory->get_hosts();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1085 string_set &ignore = *priv.content_host_ignore;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1086
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1087 int count = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1088 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
1089 uint32_t_set ips;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1090 ns_map nameservers;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1091 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
1092 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
1093
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1094 // 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
1095 string_set::iterator j = ignore.find(host);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1096 if (j != ignore.end()) continue;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1097
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1098 // 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
1099 if ((cnt > limit) && (limit > 0) && random) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1100 int r = rand() % cnt;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1101 if (r >= limit) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1102 if (debug_syslog > 2) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1103 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1104 snprintf(buf, sizeof(buf), "host %s skipped", host);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1105 my_syslog(&priv, buf);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1106 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1107 continue;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1108 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1109 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1110 count++;
381
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
1111 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
1112 if (debug_syslog > 2) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1113 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1114 if (ip) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1115 char adr[sizeof "255.255.255.255 "];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1116 adr[0] = '\0';
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1117 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
1118 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
1119 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1120 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1121 snprintf(buf, sizeof(buf), "host %s not found", host);
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 my_syslog(&priv, buf);
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 if (ip) {
382
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
1126 uint32_t_set::iterator i = ips.find(ip);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1127 if (i == ips.end()) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1128 // we haven't looked this up yet
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1129 ips.insert(ip);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1130 // check dnsbl style list
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1131 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
1132 msg = priv.content_message;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1133 return true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1134 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1135 // Check uribl & surbl style list
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1136 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
1137 msg = priv.uribl_message;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1138 return true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1139 }
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 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1142 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1143 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
1144 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
1145 count++;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1146 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
1147 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
1148 ip = (*i).second;
381
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
1149 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
1150 if (debug_syslog > 2) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1151 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1152 if (ip) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1153 char adr[sizeof "255.255.255.255 "];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1154 adr[0] = '\0';
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1155 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
1156 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
1157 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1158 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1159 snprintf(buf, sizeof(buf), "ns %s not found", host);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1160 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1161 my_syslog(&priv, buf);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1162 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1163 if (ip) {
382
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
1164 uint32_t_set::iterator i = ips.find(ip);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1165 if (i == ips.end()) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1166 ips.insert(ip);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1167 if (check_single(priv, ip, priv.content_suffix)) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1168 msg = priv.content_message;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1169 string_map::iterator j = nameservers.ns_host.find(host);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1170 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
1171 const char *refer = (*j).second;
192
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 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
1174 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
1175 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1176 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1177 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
1178 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1179 return true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1180 }
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 }
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 return false;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1185 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1186
127
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 126
diff changeset
1187
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1188 ////////////////////////////////////////////////
127
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 126
diff changeset
1189 //
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 126
diff changeset
1190 // 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
1191 // enclosed in <>. I think older versions of sendmail supplied the <>
127
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 126
diff changeset
1192 // 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
1193 // 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
1194 // 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
1195 // 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
1196 // 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
1197 //
346
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1198 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
1199 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
1200 if (!email) return strdup("<>");
328
b4f766947202 allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 327
diff changeset
1201 size_t n = strlen(email);
b4f766947202 allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 327
diff changeset
1202 if ((n > 1) && (email[0] == '<') && (email[n-1] == '>')) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1203 n -= 2;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1204 email++;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1205 }
328
b4f766947202 allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 327
diff changeset
1206 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
1207 n -= 2;
b4f766947202 allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 327
diff changeset
1208 email++;
b4f766947202 allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 327
diff changeset
1209 }
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
1210 if (n == 0) return strdup("<>");
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1211 char *key = strdup(email);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1212 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
1213 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
1214
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1215 if (srs) {
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1216 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
1217 // 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
1218 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
1219 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
1220 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
1221 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
1222 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
1223 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
1224 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
1225 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
1226 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
1227 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
1228 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
1229 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
1230 strcat(newkey, "@"); // @
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1231 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
1232 free(key);
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1233 key = newkey;
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1234 }
235
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1235 }
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1236 }
346
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 > 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
1238 // 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
1239 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
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(&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
1242 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
1243 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
1244 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
1245 free(key);
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1246 key = newkey;
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1247 }
246
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1248 }
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1249 }
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1250 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1251 return key;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1252 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1253
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1254
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1255 ////////////////////////////////////////////////
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1256 // start of sendmail milter interfaces
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1257 //
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1258 sfsistat mlfi_connect(SMFICTX *ctx, char *hostname, _SOCK_ADDR *hostaddr)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1259 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1260 // allocate some private memory
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1261 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
1262 if (hostaddr && (hostaddr->sa_family == AF_INET)) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1263 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
1264 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1265 // save the private data
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1266 smfi_setpriv(ctx, (void*)priv);
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1267
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1268 // continue processing
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1269 return SMFIS_CONTINUE;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1270 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1271
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1272 sfsistat mlfi_helo(SMFICTX * ctx, char *helohost)
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1273 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1274 mlfiPriv &priv = *MLFIPRIV;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1275 priv.helo = strdup(helohost);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1276 return SMFIS_CONTINUE;
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1277 }
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1278
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1279 sfsistat mlfi_envfrom(SMFICTX *ctx, char **from)
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 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
1282 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
1283 priv.origaddr = to_lower_string(from[0], false);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1284 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
1285 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
1286 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
1287 priv.client_name = smfi_getsymval(ctx, (char*)"_");
191
2a67d31099c3 fix null pointer dereference from missing HELO command
carl
parents: 190
diff changeset
1288 if (!priv.helo) priv.helo = strdup("unknown");
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1289 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
1290 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
1291 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
1292 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
1293 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
1294 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
1295 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
1296 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
1297 //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
1298 //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
1299 //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
1300 }
268
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1301 p = strstr(priv.client_name, "] (may be forged)");
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1302 if (p) {
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1303 priv.client_dns_forged = true;
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1304 if (priv.client_dns_name) {
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1305 char text[500];
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1306 snprintf(text, sizeof(text), "forged dns client name %s", priv.client_dns_name);
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1307 my_syslog(text);
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1308 }
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1309 }
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
1310 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1311 if (spamc != spamc_empty) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1312 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
1313 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1314 if (dccifd_port) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1315 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
1316 }
290
bb69fdc3acaa Unique ip connection limits only apply to authenticated connections
Carl Byington <carl@five-ten-sg.com>
parents: 286
diff changeset
1317 if (priv.authenticated) {
284
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 282
diff changeset
1318 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
1319 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
1320 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
1321 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
1322 if (debug_syslog > 1) {
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 282
diff changeset
1323 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
1324 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
1325 my_syslog(&priv, msg);
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 282
diff changeset
1326 }
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 282
diff changeset
1327 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
1328 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
1329 return SMFIS_REJECT;
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 282
diff changeset
1330 }
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 282
diff changeset
1331 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1332 return SMFIS_CONTINUE;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1333 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1334
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1335 sfsistat mlfi_envrcpt(SMFICTX *ctx, char **rcpt)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1336 {
278
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 272
diff changeset
1337 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
1338 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
1339 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
1340 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
1341 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
1342 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
1343 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
1344 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
1345 bool from_root = (strncasecmp(priv.mailaddr, "root@", 5) == 0);
174
da0c41b9f672 don't whitelist addresses with embedded spaces
carl
parents: 173
diff changeset
1346
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1347 // 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
1348 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
1349 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
1350 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
1351 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1352 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1353 // 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
1354 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
1355 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
1356 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
1357 // tell spam assassin and dccifd about this recipient
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1358 if (priv.assassin) priv.assassin->mlfi_envrcpt(ctx, loto);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1359 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
1360 // loto sending a reply back to priv.mailaddr
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1361 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
1362 const char *replyvalue = con2.find_from(loto);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1363 if (debug_syslog > 1) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1364 char buf[maxlen];
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1365 char buf2[maxlen];
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1366 char msg[maxlen];
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1367 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
1368 my_syslog(&priv, msg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1369 }
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1370 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
1371 status st = oksofar;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1372 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
1373 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
1374 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1375 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1376 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
1377 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
1378 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
1379 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
1380 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
1381 if (debug_syslog > 1) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1382 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
1383 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
1384 my_syslog(&priv, msg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1385 }
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
1386 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
1387 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
1388 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1389 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1390 st = white;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1391 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1392 else if (fromvalue == token_black) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1393 st = black;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1394 }
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
1395 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
1396 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
1397 }
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
1398 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
1399 // 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
1400 // 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
1401 const char *domain = strchr(priv.origaddr, '@');
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
1402 if (domain) {
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
1403 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
1404 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
1405 my_syslog(&priv, "dkim require_signed overrides envelope from whitelist");
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
1406 st = oksofar;
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
1407 }
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
1408 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
1409 }
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
1410 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
1411 }
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
1412
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
1413 if (st == oksofar) {
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1414 // check the dns based lists, whitelist first
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1415 DNSWLP acceptlist = NULL; // list that caused the whitelisting
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1416 if (check_dnswl(priv, con.get_dnswl_list(), acceptlist)) {
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1417 st = white;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1418 if (debug_syslog > 1) {
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1419 char msg[maxlen];
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1420 snprintf(msg, sizeof(msg), "whitelisted by %s", acceptlist->name);
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1421 my_syslog(&priv, msg);
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1422 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1423 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1424 else 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
1425 // 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
1426 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
1427 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
1428 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
1429 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
1430 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
1431 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
1432 return SMFIS_REJECT;
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1433 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1434 }
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
1435
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1436 if (st == oksofar) {
268
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1437 // check forged rdns
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1438 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
1439 // reject the recipient based on forged reverse dns
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1440 char buf[maxlen];
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1441 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
1442 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
1443 return SMFIS_REJECT;
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1444 }
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1445 // 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
1446 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
1447 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
1448 if (msg) {
13905d36ca82 Generic regex now matches against the reverse dns PTR value
Carl Byington <carl@five-ten-sg.com>
parents: 296
diff changeset
1449 // 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
1450 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
1451 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
1452 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
1453 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
1454 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1455 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1456 }
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
1457
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1458 if (st == black) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1459 // 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
1460 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
1461 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1462 }
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
1463
203
92a5c866bdfa Verify from/to pairs even if they might be explicitly whitelisted.
Carl Byington <carl@five-ten-sg.com>
parents: 194
diff changeset
1464 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
1465 // 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
1466 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
1467 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
1468 free((void*)loto);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1469 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
1470 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
1471 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1472 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1473 }
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
1474
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
1475 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
1476 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
1477 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
1478 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
1479 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
1480 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
1481 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
1482 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
1483 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
1484 }
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
1485 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
1486 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
1487 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
1488 }
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
1489 }
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
1490
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1491 // 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
1492 // if needed to ensure we can accept replies
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1493 loto = to_lower_string(rcptaddr);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1494 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
1495
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1496 // check if local part is too big
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1497 const int max_local_size = 30;
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1498 const char *p = strchr(loto, '@');
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1499 int len = (p) ? p-loto : max_local_size;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1500 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
1501
9f0d9fcb58dd Never add auto-whitelist entries for outgoing mail from localhost
Carl Byington <carl@five-ten-sg.com>
parents: 290
diff changeset
1502 // 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
1503 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
1504
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1505 // record it if we have a whitelister
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1506 if (w) {
231
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1507 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
1508 priv.delayer.push_back(dwp);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1509 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1510 else {
231
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1511 free((void*)loto); // or we free it here
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1512 }
179
8b86a894514d embedded dcc filtering
carl
parents: 178
diff changeset
1513
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1514 // accept the recipient
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1515 if (!con.get_content_filtering()) st = white;
179
8b86a894514d embedded dcc filtering
carl
parents: 178
diff changeset
1516
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1517 if (st == oksofar) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1518 // remember first content filtering context
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1519 if (con.get_content_filtering()) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1520 if (!priv.content_context) priv.content_context = &con;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1521 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
1522 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
1523 return SMFIS_TEMPFAIL;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1524 }
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
1525 priv.need_content_filter(con);
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
1526 char bu[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
1527 bool uri = 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
1528 // content filtering implies also checking helo name on uribl (if enabled)
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
1529 if (priv.helo_uribl) {
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
1530 snprintf(bu, sizeof(bu), "(helo %s)", priv.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
1531 uri = 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
1532 }
268
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1533 // content filtering implies also checking client reverse dns name on uribl (if enabled)
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
1534 if (priv.client_uribl) {
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
1535 snprintf(bu, sizeof(bu), "(rdns %s)", priv.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
1536 uri = 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
1537 }
268
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1538 // content filtering implies also checking mail from domain name on uribl (if enabled)
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
1539 if (priv.from_uribl) {
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
1540 snprintf(bu, sizeof(bu), "(from %s)", priv.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
1541 uri = 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
1542 }
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
1543 if (uri) {
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
1544 char buf[maxlen];
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
1545 snprintf(buf, sizeof(buf), priv.uribl_message, bu, priv.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
1546 smfi_setreply(ctx, (char*)"550", (char*)"5.7.1", buf);
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
1547 return SMFIS_REJECT;
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
1548 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1549 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1550 // 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
1551 register_string(priv.env_to, rcptaddr, &con);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1552 priv.only_whites = false;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1553 priv.want_spamassassin |= (priv.assassin) && // have spam assassin available and
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1554 (con.get_spamassassin_limit() != 0); // want to use it with a non-zero score
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1555 priv.want_dccgrey |= (priv.dccifd) && // have dcc interface and
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1556 (con.get_grey()); // want to use it for greylisting
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1557 priv.want_dccbulk |= (priv.dccifd) && // have dcc interface and
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1558 (con.get_bulk() != 0); // want to use it for bulk detection
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1559 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1560 if (st == white) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1561 priv.have_whites = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1562 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1563 return SMFIS_CONTINUE;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1564 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1565
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1566 sfsistat mlfi_header(SMFICTX* ctx, char* headerf, char* headerv)
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1567 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1568 mlfiPriv &priv = *MLFIPRIV;
321
e172dc10fe24 add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 311
diff changeset
1569 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
1570 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
1571 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
1572 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
1573 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
1574 }
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
1575 }
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
1576
322
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1577 if (priv.dkim_ok) {
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1578 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
1579 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
1580 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
1581 (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
1582 const int nmatch = 2;
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1583 regmatch_t match[nmatch];
326
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
1584 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
1585 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
1586 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
1587 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
1588 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
1589 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
1590 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
1591 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
1592 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
1593 value += e1 + 1;
326
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
1594 }
327
51846836ec92 allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 326
diff changeset
1595 else break;
322
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1596 }
326
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
1597 else break;
322
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1598 }
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1599 }
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
1600 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
1601 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
1602 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
1603 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
1604 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
1605 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
1606 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
1607 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
1608 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
1609 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
1610 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
1611 }
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
1612 }
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
1613 }
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
1614 else priv.dkim_ok = false;
322
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1615 }
328
b4f766947202 allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 327
diff changeset
1616 }
b4f766947202 allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 327
diff changeset
1617
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
1618 // 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
1619 // 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
1620 // 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
1621 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
1622 const int nmatch = 2;
b4f766947202 allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 327
diff changeset
1623 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
1624 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
1625 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
1626 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
1627 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
1628 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
1629 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
1630 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
1631 value[e1] = save;
322
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1632 }
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1633 }
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1634 }
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1635
231
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1636 // 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
1637 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
1638 ((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
1639 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
1640 }
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
1641
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1642 // other headers are only needed for content filtering
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1643 if (priv.authenticated) return SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1644 if (priv.only_whites) return SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1645 if (priv.want_spamassassin) priv.assassin->mlfi_header(headerf, headerv);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1646 if (priv.want_dccgrey || priv.want_dccbulk) priv.dccifd->mlfi_header(ctx, headerf, headerv);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1647 return SMFIS_CONTINUE;
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1648 }
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1649
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1650 sfsistat mlfi_eoh(SMFICTX* ctx)
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1651 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1652 mlfiPriv &priv = *MLFIPRIV;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1653 // delayed autowhitelisting
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1654 while (!priv.delayer.empty()) {
231
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1655 DELAYWHITEP dwp = priv.delayer.front();
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1656 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
1657 if (priv.allow_autowhitelisting) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1658 WHITELISTERP w = dwp->get_w();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1659 CONTEXTP con2 = dwp->get_con();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1660 if (debug_syslog > 1) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1661 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1662 char msg[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1663 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
1664 my_syslog(&priv, msg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1665 }
231
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1666 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
1667 }
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1668 else {
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1669 if (debug_syslog > 1) {
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1670 char msg[maxlen];
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1671 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
1672 my_syslog(&priv, msg);
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1673 }
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1674 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
1675 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1676 delete dwp;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1677 priv.delayer.pop_front();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1678 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1679 // content filtering
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1680 if (priv.authenticated) return SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1681 if (priv.only_whites) return SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1682 if (priv.want_spamassassin) priv.assassin->mlfi_eoh();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1683 if (priv.want_dccgrey || priv.want_dccbulk) priv.dccifd->mlfi_eoh();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1684 return SMFIS_CONTINUE;
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1685 }
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1686
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1687 sfsistat mlfi_body(SMFICTX *ctx, u_char *data, size_t len)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1688 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1689 mlfiPriv &priv = *MLFIPRIV;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1690 if (priv.authenticated) return SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1691 if (priv.only_whites) return SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1692 if (priv.want_spamassassin) priv.assassin->mlfi_body(data, len);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1693 if (priv.want_dccgrey || priv.want_dccbulk) priv.dccifd->mlfi_body(data, len);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1694 priv.scanner->scan(data, len);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1695 return SMFIS_CONTINUE;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1696 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1697
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1698 sfsistat mlfi_eom(SMFICTX *ctx)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1699 {
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
1700 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
1701 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
1702 const char *host = NULL;
382
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
1703 uint32_t ip;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1704 // process end of message
190
004b855c6c1f fix null pointer dereference from missing HELO command
carl
parents: 188
diff changeset
1705 priv.eom = true;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1706 if (priv.authenticated || priv.only_whites) rc = SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1707 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1708 // assert env_to not empty, it contains the
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1709 // non-whitelisted folks that want content filtering
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1710 int score = (priv.want_spamassassin) ? priv.assassin->mlfi_eom() : 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1711 bool grey = false;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1712 int bulk = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1713 if (priv.want_dccgrey || priv.want_dccbulk) priv.dccifd->mlfi_eom(grey, bulk);
178
d6531c702be3 embedded dcc filtering
carl
parents: 177
diff changeset
1714
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1715 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1716 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
1717 string_set unknowns;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1718 bool random = false;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1719 int limit = 0;
377
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1720 const char *signer = NULL;
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1721 bool checked_signers = false;
326
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
1722 if (priv.dkim_signers.empty()) {
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
1723 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
1724 (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
1725 my_syslog(&priv, buf);
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
1726 }
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
1727 else {
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
1728 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
1729 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
1730 (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
1731 my_syslog(&priv, buf);
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
1732 }
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
1733 }
323
a6de27b0a1e9 add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 322
diff changeset
1734
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
1735 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
1736 const char *st = token_black;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1737 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
1738 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
1739 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
1740 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
1741 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
1742 st = con->acceptable_content(*priv.memory, score, bulk, priv.queueid, priv.dkim_signers, priv.fromaddr, &priv, msg);
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
1743 }
331
9800776436b9 allow dkim whitelisting to override uribl hosts in the mail body
Carl Byington <carl@five-ten-sg.com>
parents: 330
diff changeset
1744 if (st == token_black) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1745 // bad html tags or excessive hosts or
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1746 // 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
1747 // 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
1748 // 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
1749 smfi_delrcpt(ctx, (char*)rcpt);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1750 }
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 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
1752 if (!checked_signers) {
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1753 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
1754 checked_signers = true;
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1755 if (signer) {
379
e42923f8f3fd better message for dkim signers listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 377
diff changeset
1756 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
1757 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
1758 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
1759 msg = string(buf);
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1760 }
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1761 }
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1762 if (signer) {
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1763 // 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
1764 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
1765 }
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1766 else {
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1767 // still unknown
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1768 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
1769 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
1770 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
1771 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1772 }
331
9800776436b9 allow dkim whitelisting to override uribl hosts in the mail body
Carl Byington <carl@five-ten-sg.com>
parents: 330
diff changeset
1773 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
1774 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
1775 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1776 }
379
e42923f8f3fd better message for dkim signers listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 377
diff changeset
1777 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
1778 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
1779 // 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
1780 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
1781 const char *found;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1782 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
1783 if (found) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1784 // uribl style
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1785 snprintf(buf, sizeof(buf), fmt, host, found);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1786 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1787 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1788 // dnsbl style
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1789 char adr[sizeof "255.255.255.255 "];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1790 adr[0] = '\0';
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1791 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
1792 snprintf(buf, sizeof(buf), fmt, host, adr);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1793 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1794 msg = string(buf);
379
e42923f8f3fd better message for dkim signers listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 377
diff changeset
1795 rejecting_unknowns = true;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1796 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1797 }
379
e42923f8f3fd better message for dkim signers listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 377
diff changeset
1798 if (!rejecting_unknowns) {
e42923f8f3fd better message for dkim signers listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 377
diff changeset
1799 // 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
1800 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
1801 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
1802 rc = SMFIS_TEMPFAIL;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1803 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1804 else rc = SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1805 }
379
e42923f8f3fd better message for dkim signers listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 377
diff changeset
1806 else if (!priv.have_whites) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1807 // can reject the entire message
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1808 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
1809 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
1810 rc = SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1811 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1812 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1813 // 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
1814 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
1815 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
1816 smfi_delrcpt(ctx, (char*)rcpt);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1817 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1818 rc = SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1819 }
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 // reset for a new message on the same connection
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1822 mlfi_abort(ctx);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1823 return rc;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1824 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1825
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1826 sfsistat mlfi_abort(SMFICTX *ctx)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1827 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1828 mlfiPriv &priv = *MLFIPRIV;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1829 priv.reset();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1830 return SMFIS_CONTINUE;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1831 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1832
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1833 sfsistat mlfi_close(SMFICTX *ctx)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1834 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1835 mlfiPriv *priv = MLFIPRIV;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1836 if (!priv) return SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1837 delete priv;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1838 smfi_setpriv(ctx, NULL);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1839 return SMFIS_CONTINUE;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1840 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1841
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1842 struct smfiDesc smfilter =
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1843 {
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1844 (char*)"DNSBL", // filter name
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1845 SMFI_VERSION, // version code -- do not change
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1846 SMFIF_DELRCPT, // flags
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1847 mlfi_connect, // connection info filter
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1848 mlfi_helo, // SMTP HELO command filter
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1849 mlfi_envfrom, // envelope sender filter
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1850 mlfi_envrcpt, // envelope recipient filter
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1851 mlfi_header, // header filter
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1852 mlfi_eoh, // end of header
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1853 mlfi_body, // body block filter
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1854 mlfi_eom, // end of message
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1855 mlfi_abort, // message aborted
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1856 mlfi_close, // connection cleanup
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1857 };
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 ////////////////////////////////////////////////
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1861 // reload the config
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1862 //
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1863 CONFIG* new_conf();
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1864 CONFIG* new_conf() {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1865 CONFIG *newc = new CONFIG;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1866 pthread_mutex_lock(&config_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1867 newc->generation = generation++;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1868 pthread_mutex_unlock(&config_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1869 if (debug_syslog) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1870 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1871 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
1872 my_syslog(buf);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1873 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1874 if (load_conf(*newc, "dnsbl.conf")) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1875 newc->load_time = time(NULL);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1876 return newc;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1877 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1878 delete newc;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1879 return NULL;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1880 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1881
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1882
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1883 ////////////////////////////////////////////////
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1884 // thread to watch the old config files for changes
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1885 // and reload when needed.
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1886 // we also clear the SMTP AUTH recipient counts hourly
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1887 //
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1888 extern "C" {void* config_loader(void *arg);}
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1889 void* config_loader(void *arg) {
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
1890 int loop1 = 0;
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
1891 int loop2 = 0;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1892 while (loader_run) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1893 sleep(180); // look for modifications every 3 minutes
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1894 if (!loader_run) break;
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
1895 loop1++;
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
1896 loop2++;
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
1897 if (loop1 == 20) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1898 // three minutes thru each loop, 20 loops per hour
280
2b77295fb9a7 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 278
diff changeset
1899 // clear the recipient hourly counts and hourly sets of ip connection addresses
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1900 pthread_mutex_lock(&rate_mutex);
278
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 272
diff changeset
1901 for (rates::iterator i=rcpt_hourly_counts.begin(); i!=rcpt_hourly_counts.end(); i++) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1902 (*i).second = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1903 }
278
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 272
diff changeset
1904 for (auth_addresses::iterator j=auth_hourly_addresses.begin(); j!=auth_hourly_addresses.end(); j++) {
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 272
diff changeset
1905 delete (*j).second;
382
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
1906 (*j).second = new uint32_t_set;
278
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 272
diff changeset
1907 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1908 pthread_mutex_unlock(&rate_mutex);
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
1909 loop1 = 0;
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
1910 }
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
1911 if (loop2 == 480) {
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
1912 // three minutes thru each loop, 480 loops per day
280
2b77295fb9a7 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 278
diff changeset
1913 // clear the recipient daily counts and daily sets of connection ip addresses
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
1914 pthread_mutex_lock(&rate_mutex);
278
368572c57013 add limits on unique ip addresses per hour per authenticated user
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parents: 272
diff changeset
1915 for (rates::iterator i=rcpt_daily_counts.begin(); i!=rcpt_daily_counts.end(); i++) {
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
1916 (*i).second = 0;
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
1917 }
278
368572c57013 add limits on unique ip addresses per hour per authenticated user
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parents: 272
diff changeset
1918 for (auth_addresses::iterator j=auth_daily_addresses.begin(); j!=auth_daily_addresses.end(); j++) {
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 272
diff changeset
1919 delete (*j).second;
382
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
1920 (*j).second = new uint32_t_set;
278
368572c57013 add limits on unique ip addresses per hour per authenticated user
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parents: 272
diff changeset
1921 }
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
1922 pthread_mutex_unlock(&rate_mutex);
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
1923 loop2 = 0;
192
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carl
parents: 191
diff changeset
1924 }
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carl
parents: 191
diff changeset
1925 CONFIG &dc = *config;
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carl
parents: 191
diff changeset
1926 time_t then = dc.load_time;
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carl
parents: 191
diff changeset
1927 struct stat st;
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carl
parents: 191
diff changeset
1928 bool reload = false;
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carl
parents: 191
diff changeset
1929 for (string_set::iterator i=dc.config_files.begin(); i!=dc.config_files.end(); i++) {
214
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Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1930 const char *fn = *i;
192
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carl
parents: 191
diff changeset
1931 if (stat(fn, &st)) reload = true; // file disappeared
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carl
parents: 191
diff changeset
1932 else if (st.st_mtime > then) reload = true; // file modified
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carl
parents: 191
diff changeset
1933 if (reload) break;
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carl
parents: 191
diff changeset
1934 }
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carl
parents: 191
diff changeset
1935 if (reload) {
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carl
parents: 191
diff changeset
1936 CONFIG *newc = new_conf();
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carl
parents: 191
diff changeset
1937 if (newc) {
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carl
parents: 191
diff changeset
1938 // replace the global config pointer
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carl
parents: 191
diff changeset
1939 pthread_mutex_lock(&config_mutex);
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carl
parents: 191
diff changeset
1940 CONFIG *pc = config;
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carl
parents: 191
diff changeset
1941 bool last = pc && (!pc->reference_count);
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carl
parents: 191
diff changeset
1942 config = newc;
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carl
parents: 191
diff changeset
1943 pthread_mutex_unlock(&config_mutex);
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carl
parents: 191
diff changeset
1944 if (last) delete pc; // there were no references to this config
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carl
parents: 191
diff changeset
1945 }
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carl
parents: 191
diff changeset
1946 else {
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carl
parents: 191
diff changeset
1947 // failed to load new config
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carl
parents: 191
diff changeset
1948 my_syslog("failed to load new configuration");
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carl
parents: 191
diff changeset
1949 system("echo 'failed to load new dnsbl configuration from /etc/dnsbl' | mail -s 'error in /etc/dnsbl configuration' root");
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carl
parents: 191
diff changeset
1950 // update the load time on the current config to prevent complaining every 3 minutes
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carl
parents: 191
diff changeset
1951 dc.load_time = time(NULL);
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carl
parents: 191
diff changeset
1952 }
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carl
parents: 191
diff changeset
1953 }
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carl
parents: 191
diff changeset
1954 }
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carl
parents: 191
diff changeset
1955 return NULL;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1956 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1957
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1958
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1959 void usage(const char *prog);
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1960 void usage(const char *prog)
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1961 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1962 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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carl
parents: 191
diff changeset
1963 fprintf(stderr, "where dccifd_addr is for the connection to dccifd\n");
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carl
parents: 191
diff changeset
1964 fprintf(stderr, " and should be local-domain-socket-file-name\n");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1965 fprintf(stderr, "where port is for the connection to our own dns resolver processes\n");
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carl
parents: 191
diff changeset
1966 fprintf(stderr, " and should be local-domain-socket-file-name\n");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1967 fprintf(stderr, "where sm-sock-addr is for the connection to sendmail\n");
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carl
parents: 191
diff changeset
1968 fprintf(stderr, " and should be one of\n");
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carl
parents: 191
diff changeset
1969 fprintf(stderr, " inet:port@ip-address\n");
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carl
parents: 191
diff changeset
1970 fprintf(stderr, " local:local-domain-socket-file-name\n");
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carl
parents: 191
diff changeset
1971 fprintf(stderr, "-c will load and dump the config to stdout\n");
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carl
parents: 191
diff changeset
1972 fprintf(stderr, "-s will stress test the config loading code by repeating the load/free cycle\n");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1973 fprintf(stderr, " in an infinte loop.\n");
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carl
parents: 191
diff changeset
1974 fprintf(stderr, "-d will set the syslog message level, currently 0 to 3\n");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1975 fprintf(stderr, "-e will print the results of looking up the from and to addresses in the\n");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1976 fprintf(stderr, " current config. The | character is used to separate the from and to\n");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1977 fprintf(stderr, " addresses in the argument to the -e switch\n");
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1978 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1979
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1980
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1981
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1982 void setup_socket(const char *sock);
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1983 void setup_socket(const char *sock) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1984 unlink(sock);
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1985 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1986
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1987
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1988 /*
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1989 * The signal handler function -- only gets called when a SIGCHLD
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1990 * is received, ie when a child terminates
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1991 */
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1992 void sig_chld(int signo)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1993 {
192
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carl
parents: 191
diff changeset
1994 int status;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1995 /* Wait for any child without blocking */
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1996 while (waitpid(-1, &status, WNOHANG) > 0) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1997 // ignore child exit status, we only do this to cleanup zombies
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1998 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1999 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2000
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2001
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2002 int main(int argc, char**argv)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2003 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2004 token_init();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2005 bool check = false;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2006 bool stress = false;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2007 bool setconn = false;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2008 bool setreso = false;
244
ef97c7cd4a6e const correctness fixes from new gcc, libresolv.a moved to glibc-static on newer distributions
Carl Byington <carl@five-ten-sg.com>
parents: 242
diff changeset
2009 char *email = NULL;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2010 int c;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2011 const char *args = "b:r:p:t:e:d:chs";
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2012 extern char *optarg;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2013
235
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
2014 // setup srs coding detection
296
05b604c99e06 allow broken SRS0+ rather than the correct SRS0= tag
Carl Byington <carl@five-ten-sg.com>
parents: 293
diff changeset
2015 if (regcomp(&srs_pattern, "^srs(0|1)(=|\\+)([^=]+)=([^=]+)=([^=]+)=([^@]+)@", REG_ICASE | REG_EXTENDED)) {
235
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
2016 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
2017 exit(3);
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
2018 }
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
2019
246
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
2020 // setup prvs coding detection
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
2021 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
2022 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
2023 exit(3);
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
2024 }
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
2025
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
2026 // 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
2027 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
2028 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
2029 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
2030 }
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
2031
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
2032 // 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
2033 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
2034 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
2035 exit(3);
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
2036 }
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
2037
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
2038 // 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
2039 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
2040 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
2041 exit(3);
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
2042 }
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
2043
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2044 // Process command line options
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2045 while ((c = getopt(argc, argv, args)) != -1) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2046 switch (c) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2047 case 'b':
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2048 if (optarg == NULL || *optarg == '\0') {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2049 fprintf(stderr, "Illegal dccifd socket: %s\n", optarg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2050 exit(EX_USAGE);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2051 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2052 dccifd_port = strdup(optarg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2053 break;
177
a4d313c2460b start embedded dcc filtering
carl
parents: 174
diff changeset
2054
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2055 case 'r':
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2056 if (optarg == NULL || *optarg == '\0') {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2057 fprintf(stderr, "Illegal resolver socket: %s\n", optarg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2058 exit(EX_USAGE);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2059 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2060 resolver_port = strdup(optarg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2061 setup_socket(resolver_port);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2062 setreso = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2063 break;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2064
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2065 case 'p':
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2066 if (optarg == NULL || *optarg == '\0') {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2067 fprintf(stderr, "Illegal sendmail socket: %s\n", optarg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2068 exit(EX_USAGE);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2069 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2070 if (smfi_setconn(optarg) == MI_FAILURE) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2071 fprintf(stderr, "smfi_setconn failed\n");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2072 exit(EX_SOFTWARE);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2073 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2074 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
2075 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
2076 setconn = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2077 break;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2078
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2079 case 't':
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2080 if (optarg == NULL || *optarg == '\0') {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2081 fprintf(stderr, "Illegal timeout: %s\n", optarg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2082 exit(EX_USAGE);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2083 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2084 if (smfi_settimeout(atoi(optarg)) == MI_FAILURE) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2085 fprintf(stderr, "smfi_settimeout failed\n");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2086 exit(EX_SOFTWARE);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2087 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2088 break;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2089
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2090 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
2091 if (email) free((void*)email);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2092 email = strdup(optarg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2093 break;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2094
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2095 case 'c':
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2096 check = 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 's':
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2100 stress = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2101 break;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2102
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2103 case 'd':
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2104 if (optarg == NULL || *optarg == '\0') debug_syslog = 1;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2105 else debug_syslog = atoi(optarg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2106 break;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2107
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2108 case 'h':
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2109 default:
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2110 usage(argv[0]);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2111 exit(EX_USAGE);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2112 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2113 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2114
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2115 if (check) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2116 use_syslog = false;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2117 debug_syslog = 10;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2118 CONFIG *conf = new_conf();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2119 if (conf) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2120 conf->dump();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2121 delete conf;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2122 clear_strings(); // for valgrind checking
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2123 return 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2124 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2125 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2126 return 1; // config failed to load
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2127 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2128 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2129
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2130 if (stress) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2131 fprintf(stdout, "stress testing\n");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2132 while (1) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2133 for (int i=0; i<10; i++) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2134 CONFIG *conf = new_conf();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2135 if (conf) delete conf;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2136 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2137 fprintf(stdout, ".");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2138 fflush(stdout);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2139 sleep(1);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2140 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2141 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2142
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2143 if (email) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2144 char *x = strchr(email, '|');
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2145 if (x) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2146 *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
2147 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
2148 const char *to = to_lower_string(x+1);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2149 use_syslog = false;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2150 CONFIG *conf = new_conf();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2151 if (conf) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2152 CONTEXTP con = conf->find_context(to);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2153 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2154 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
2155 CONTEXTP fc = con->find_context(from);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2156 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
2157 const char *st = fc->find_from(from);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2158 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
2159 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
2160 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
2161 delete conf;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2162 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2163 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2164 return 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2165 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2166
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2167 if (!setconn) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2168 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
2169 usage(argv[0]);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2170 exit(EX_USAGE);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2171 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2172
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2173 if (!setreso) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2174 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
2175 usage(argv[0]);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2176 exit(EX_USAGE);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2177 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2178
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2179 if (smfi_register(smfilter) == MI_FAILURE) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2180 fprintf(stderr, "smfi_register failed\n");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2181 exit(EX_UNAVAILABLE);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2182 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2183
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2184 // switch to background mode
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2185 if (daemon(1,0) < 0) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2186 fprintf(stderr, "daemon() call failed\n");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2187 exit(EX_UNAVAILABLE);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2188 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2189
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2190 // write the pid
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2191 const char *pidpath = "/var/run/dnsbl.pid";
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2192 unlink(pidpath);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2193 FILE *f = fopen(pidpath, "w");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2194 if (f) {
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2195 #ifdef linux
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2196 // from a comment in the DCC source code:
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2197 // Linux threads are broken. Signals given the
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2198 // original process are delivered to only the
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2199 // thread that happens to have that PID. The
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2200 // sendmail libmilter thread that needs to hear
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2201 // SIGINT and other signals does not, and that breaks
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2202 // scripts that need to stop milters.
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2203 // However, signaling the process group works.
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2204 fprintf(f, "-%d\n", (u_int)getpgrp());
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2205 #else
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2206 fprintf(f, "%d\n", (u_int)getpid());
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2207 #endif
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2208 fclose(f);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2209 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2210
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2211 // initialize the thread sync objects
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2212 pthread_mutex_init(&config_mutex, 0);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2213 pthread_mutex_init(&syslog_mutex, 0);
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carl
parents: 191
diff changeset
2214 pthread_mutex_init(&resolve_mutex, 0);
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carl
parents: 191
diff changeset
2215 pthread_mutex_init(&fd_pool_mutex, 0);
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carl
parents: 191
diff changeset
2216 pthread_mutex_init(&verifier_mutex, 0);
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carl
parents: 191
diff changeset
2217 pthread_mutex_init(&whitelister_mutex, 0);
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2218
192
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carl
parents: 191
diff changeset
2219 // drop root privs
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carl
parents: 191
diff changeset
2220 struct passwd *pw = getpwnam("dnsbl");
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carl
parents: 191
diff changeset
2221 if (pw) {
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carl
parents: 191
diff changeset
2222 if (setgid(pw->pw_gid) == -1) {
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carl
parents: 191
diff changeset
2223 my_syslog("failed to switch to group dnsbl");
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carl
parents: 191
diff changeset
2224 }
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carl
parents: 191
diff changeset
2225 if (setuid(pw->pw_uid) == -1) {
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carl
parents: 191
diff changeset
2226 my_syslog("failed to switch to user dnsbl");
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carl
parents: 191
diff changeset
2227 }
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carl
parents: 191
diff changeset
2228 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2229
192
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carl
parents: 191
diff changeset
2230 // load the initial config
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carl
parents: 191
diff changeset
2231 config = new_conf();
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carl
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diff changeset
2232 if (!config) {
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carl
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diff changeset
2233 my_syslog("failed to load initial configuration, quitting");
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carl
parents: 191
diff changeset
2234 exit(1);
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carl
parents: 191
diff changeset
2235 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2236
192
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carl
parents: 191
diff changeset
2237 // fork off the resolver listener process
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carl
parents: 191
diff changeset
2238 pid_t child = fork();
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carl
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diff changeset
2239 if (child < 0) {
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carl
parents: 191
diff changeset
2240 my_syslog("failed to create resolver listener process");
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carl
parents: 191
diff changeset
2241 exit(0);
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carl
parents: 191
diff changeset
2242 }
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diff changeset
2243 if (child == 0) {
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carl
parents: 191
diff changeset
2244 // we are the child - dns resolver listener process
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carl
parents: 191
diff changeset
2245 resolver_socket = socket(AF_UNIX, SOCK_STREAM, 0);
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carl
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diff changeset
2246 if (resolver_socket < 0) {
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carl
parents: 191
diff changeset
2247 my_syslog("child failed to create resolver socket");
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carl
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diff changeset
2248 exit(0); // failed
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carl
parents: 191
diff changeset
2249 }
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carl
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diff changeset
2250 sockaddr_un server;
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carl
parents: 191
diff changeset
2251 memset(&server, '\0', sizeof(server));
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carl
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diff changeset
2252 server.sun_family = AF_UNIX;
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carl
parents: 191
diff changeset
2253 strncpy(server.sun_path, resolver_port, sizeof(server.sun_path)-1);
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carl
parents: 191
diff changeset
2254 //try to bind the address to the socket.
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carl
parents: 191
diff changeset
2255 if (bind(resolver_socket, (sockaddr *)&server, sizeof(server)) < 0) {
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carl
parents: 191
diff changeset
2256 // bind failed
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carl
parents: 191
diff changeset
2257 shutdown(resolver_socket, SHUT_RDWR);
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carl
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diff changeset
2258 close(resolver_socket);
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carl
parents: 191
diff changeset
2259 my_syslog("child failed to bind resolver socket");
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carl
parents: 191
diff changeset
2260 exit(0); // failed
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carl
parents: 191
diff changeset
2261 }
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carl
parents: 191
diff changeset
2262 //listen on the socket.
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carl
parents: 191
diff changeset
2263 if (listen(resolver_socket, 10) < 0) {
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carl
parents: 191
diff changeset
2264 // listen failed
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carl
parents: 191
diff changeset
2265 shutdown(resolver_socket, SHUT_RDWR);
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carl
parents: 191
diff changeset
2266 close(resolver_socket);
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carl
parents: 191
diff changeset
2267 my_syslog("child failed to listen to resolver socket");
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carl
parents: 191
diff changeset
2268 exit(0); // failed
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carl
parents: 191
diff changeset
2269 }
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carl
parents: 191
diff changeset
2270 // setup sigchld handler to prevent zombies
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carl
parents: 191
diff changeset
2271 struct sigaction act;
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carl
parents: 191
diff changeset
2272 act.sa_handler = sig_chld; // Assign sig_chld as our SIGCHLD handler
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carl
parents: 191
diff changeset
2273 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
2274 act.sa_flags = SA_NOCLDSTOP; // only want children that have terminated
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carl
parents: 191
diff changeset
2275 if (sigaction(SIGCHLD, &act, NULL) < 0) {
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carl
parents: 191
diff changeset
2276 my_syslog("child failed to setup SIGCHLD handler");
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carl
parents: 191
diff changeset
2277 exit(0); // failed
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carl
parents: 191
diff changeset
2278 }
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carl
parents: 191
diff changeset
2279 while (true) {
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carl
parents: 191
diff changeset
2280 sockaddr_un client;
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carl
parents: 191
diff changeset
2281 socklen_t clientlen = sizeof(client);
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carl
parents: 191
diff changeset
2282 int s = accept(resolver_socket, (sockaddr *)&client, &clientlen);
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carl
parents: 191
diff changeset
2283 if (s > 0) {
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carl
parents: 191
diff changeset
2284 // accept worked, it did not get cancelled before we could accept it
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carl
parents: 191
diff changeset
2285 // fork off a process to handle this connection
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carl
parents: 191
diff changeset
2286 int newchild = fork();
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carl
parents: 191
diff changeset
2287 if (newchild == 0) {
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carl
parents: 191
diff changeset
2288 // this is the worker process
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carl
parents: 191
diff changeset
2289 // child does not need the listening socket
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carl
parents: 191
diff changeset
2290 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
2291 #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
2292 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
2293 _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
2294 _res.retrans = RES_TIMEOUT;
393
dffedbdc8566 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 390
diff changeset
2295 #ifdef RES_USE_EDNS0
389
aa9795b407e8 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 388
diff changeset
2296 _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
2297 #endif
393
dffedbdc8566 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 390
diff changeset
2298 #endif
192
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carl
parents: 191
diff changeset
2299 process_resolver_requests(s);
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carl
parents: 191
diff changeset
2300 exit(0);
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carl
parents: 191
diff changeset
2301 }
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carl
parents: 191
diff changeset
2302 else {
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carl
parents: 191
diff changeset
2303 // this is the parent
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carl
parents: 191
diff changeset
2304 // parent does not need the accepted socket
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carl
parents: 191
diff changeset
2305 close(s);
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carl
parents: 191
diff changeset
2306 }
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carl
parents: 191
diff changeset
2307 }
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carl
parents: 191
diff changeset
2308 }
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carl
parents: 191
diff changeset
2309 exit(0); // make sure we don't fall thru.
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carl
parents: 191
diff changeset
2310 }
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carl
parents: 191
diff changeset
2311 else {
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carl
parents: 191
diff changeset
2312 sleep(2); // allow child to get started
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carl
parents: 191
diff changeset
2313 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2314
192
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carl
parents: 191
diff changeset
2315 // only create threads after the fork() in daemon
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carl
parents: 191
diff changeset
2316 pthread_t tid;
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carl
parents: 191
diff changeset
2317 if (pthread_create(&tid, 0, config_loader, 0))
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carl
parents: 191
diff changeset
2318 my_syslog("failed to create config loader thread");
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carl
parents: 191
diff changeset
2319 if (pthread_detach(tid))
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carl
parents: 191
diff changeset
2320 my_syslog("failed to detach config loader thread");
153
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carl
parents: 152
diff changeset
2321
192
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carl
parents: 191
diff changeset
2322 if (pthread_create(&tid, 0, verify_closer, 0))
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2323 my_syslog("failed to create verify closer thread");
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carl
parents: 191
diff changeset
2324 if (pthread_detach(tid))
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2325 my_syslog("failed to detach verify closer thread");
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2326
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2327 if (pthread_create(&tid, 0, whitelister_writer, 0))
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2328 my_syslog("failed to create autowhite writer thread");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2329 if (pthread_detach(tid))
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2330 my_syslog("failed to detach autowhite writer thread");
153
8d7c439bb6fa add auto whitelisting
carl
parents: 152
diff changeset
2331
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2332 time_t starting = time(NULL);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2333 int rc = smfi_main();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2334 if ((rc != MI_SUCCESS) && (time(NULL) > starting+5*60)) {
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carl
parents: 191
diff changeset
2335 my_syslog("trying to restart after smfi_main()");
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carl
parents: 191
diff changeset
2336 loader_run = false; // eventually the config loader thread will terminate
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carl
parents: 191
diff changeset
2337 execvp(argv[0], argv);
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carl
parents: 191
diff changeset
2338 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2339 exit((rc == MI_SUCCESS) ? 0 : EX_UNAVAILABLE);
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2340 }