annotate src/dnsbl.cpp @ 377:7fd39f029936

reject if dkim signer is listed on surbl
author Carl Byington <carl@five-ten-sg.com>
date Sat, 18 Feb 2017 15:06:32 -0800
parents 9fc05f3a824f
children e42923f8f3fd
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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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125
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126 struct ns_map {
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127 // all the strings are owned by the keys/values in the ns_host string map
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128 string_map ns_host; // nameserver name -> host name that uses this name server
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129 ns_mapper ns_ip; // nameserver name -> ipv4 address of the name server
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130 ~ns_map();
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131 void add(const char *name, const char *refer);
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132 };
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134
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135 ns_map::~ns_map() {
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136 for (string_map::iterator i=ns_host.begin(); i!=ns_host.end(); i++) {
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137 const char *x = (*i).first;
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138 const char *y = (*i).second;
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139 free((void*)x);
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140 free((void*)y);
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141 }
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142 ns_ip.clear();
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143 ns_host.clear();
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144 }
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146
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147 void ns_map::add(const char *name, const char *refer) {
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148 string_map::iterator i = ns_host.find(name);
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149 if (i != ns_host.end()) return;
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150 char *x = strdup(name);
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151 char *y = strdup(refer);
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152 ns_ip[x] = 0;
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153 ns_host[x] = y;
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154
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155 }
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156
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157 // packed structure to allow a single socket write to dump the
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158 // length and the following answer. The packing attribute is gcc specific.
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159 struct glommer {
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160 size_t length;
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161 #ifdef NS_PACKETSZ
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162 u_char answer[NS_PACKETSZ*4]; // with a resolver, we return resolver answers
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163 #else
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164 uint32_t answer; // without a resolver, we return a single ipv4 address in network byte order, 0 == no answer
192
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165 #endif
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166 } __attribute__ ((packed));
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167
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168
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169 ////////////////////////////////////////////////
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170 // helper to manipulate recipient counts
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171 //
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172 void incr_rcpt_count(const char *user, int &hourly, int &daily);
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173 void incr_rcpt_count(const char *user, int &hourly, int &daily) {
192
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174 pthread_mutex_lock(&rate_mutex);
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175 rates::iterator i = rcpt_hourly_counts.find(user);
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176 hourly = 1;
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177 if (i == rcpt_hourly_counts.end()) {
192
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178 user = strdup(user);
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179 rcpt_hourly_counts[user] = hourly;
192
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180 }
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181 else {
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182 hourly = ++((*i).second);
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183 }
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184
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185 rates::iterator j = rcpt_daily_counts.find(user);
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186 daily = 1;
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187 if (j == rcpt_daily_counts.end()) {
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188 user = strdup(user);
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189 rcpt_daily_counts[user] = daily;
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190 }
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191 else {
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192 daily = ++((*j).second);
192
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193 }
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194 pthread_mutex_unlock(&rate_mutex);
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195 }
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196
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197
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198 void add_auth_address(const char *user, int &hourly, int &daily, int32_t ip);
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199 void add_auth_address(const char *user, int &hourly, int &daily, int32_t ip) {
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200 pthread_mutex_lock(&rate_mutex);
280
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201 auth_addresses::iterator i = auth_hourly_addresses.find(user);
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202 if (i == auth_hourly_addresses.end()) {
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203 user = strdup(user);
278
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204 auth_hourly_addresses[user] = new int32_t_set;
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205 auth_hourly_addresses[user]->insert(ip);
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206 hourly = 1;
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207 }
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208 else {
280
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209 int32_t_set::iterator k = ((*i).second)->find(ip);
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210 if (k == ((*i).second)->end()) ((*i).second)->insert(ip);
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211 hourly = ((*i).second)->size();
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212 }
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213
280
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214 auth_addresses::iterator j = auth_daily_addresses.find(user);
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215 if (j == auth_daily_addresses.end()) {
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216 user = strdup(user);
278
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217 auth_daily_addresses[user] = new int32_t_set;
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218 auth_daily_addresses[user]->insert(ip);
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219 daily = 1;
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220 }
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221 else {
280
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222 int32_t_set::iterator k = ((*j).second)->find(ip);
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223 if (k == ((*j).second)->end()) ((*j).second)->insert(ip);
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224 daily = ((*j).second)->size();
278
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225 }
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226 pthread_mutex_unlock(&rate_mutex);
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227 }
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228
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229 ////////////////////////////////////////////////
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230 // helper to discard the strings held by a context_map
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231 //
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232 void discard(context_map &cm);
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233 void discard(context_map &cm) {
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234 for (context_map::iterator i=cm.begin(); i!=cm.end(); i++) {
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235 const char *x = (*i).first;
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236 free((void*)x);
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237 }
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238 cm.clear();
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239 }
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240
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241
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242 ////////////////////////////////////////////////
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243 // helper to register a string in a context_map
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244 //
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245 void register_string(context_map &cm, const char *name, CONTEXT *con);
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246 void register_string(context_map &cm, const char *name, CONTEXT *con) {
192
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247 context_map::iterator i = cm.find(name);
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248 if (i != cm.end()) return;
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249 char *x = strdup(name);
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250 cm[x] = con;
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251 }
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252
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253
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254 ////////////////////////////////////////////////
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255 // disconnect the fd from the dns resolver process
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256 //
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257 void my_disconnect(int sock, bool decrement = true);
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258 void my_disconnect(int sock, bool decrement) {
192
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259 if (sock != NULL_SOCKET) {
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260 if (decrement) {
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261 pthread_mutex_lock(&fd_pool_mutex);
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262 resolver_sock_count--;
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263 pthread_mutex_unlock(&fd_pool_mutex);
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264 }
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265 shutdown(sock, SHUT_RDWR);
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266 close(sock);
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267 }
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268 }
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269
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270
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271 ////////////////////////////////////////////////
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272 // return fd connected to the dns resolver process
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273 //
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274 int my_connect();
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275 int my_connect() {
192
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276 // if we have had recent errors, don't even try to open the socket
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277 if ((time(NULL) - last_error_time) < ERROR_SOCKET_TIME) return NULL_SOCKET;
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278
192
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279 // nothing recent, maybe this time it will work
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280 int sock = NULL_SOCKET;
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281 sockaddr_un server;
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282 memset(&server, '\0', sizeof(server));
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283 server.sun_family = AF_UNIX;
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284 strncpy(server.sun_path, resolver_port, sizeof(server.sun_path)-1);
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285 sock = socket(AF_UNIX, SOCK_STREAM, 0);
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286 if (sock != NULL_SOCKET) {
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287 bool rc = (connect(sock, (sockaddr *)&server, sizeof(server)) == 0);
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288 if (!rc) {
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289 my_disconnect(sock, false);
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290 sock = NULL_SOCKET;
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291 last_error_time = time(NULL);
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292 }
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293 }
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294 else last_error_time = time(NULL);
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295 if (sock != NULL_SOCKET) {
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296 pthread_mutex_lock(&fd_pool_mutex);
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297 resolver_sock_count++;
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298 pthread_mutex_unlock(&fd_pool_mutex);
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299 }
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300 return sock;
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301 }
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302
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303
236
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304 ////////////////////////////////////////////////
252
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305 // ask a dns question and get an A record answer in network byte order
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306 // we don't try very hard, just using the default resolver retry settings.
236
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307 // If we cannot get an answer, we just accept the mail.
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308 //
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309 //
252
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310 uint32_t dns_interface(mlfiPriv &priv, const char *question, bool maybe_ip, ns_map *nameservers);
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311 uint32_t dns_interface(mlfiPriv &priv, const char *question, bool maybe_ip, ns_map *nameservers) {
236
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312 // tell sendmail we are still working
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313 #if _FFR_SMFI_PROGRESS
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314 if (priv.eom) smfi_progress(priv.ctx);
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315 #endif
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316
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317 // this part can be done without locking the resolver mutex. Each
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318 // milter thread is talking over its own socket to a separate resolver
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319 // process, which does the actual dns resolution.
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320 if (priv.err) return 0; // cannot ask more questions on this socket.
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321 if (maybe_ip) {
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322 // might be a bare ip address, try this first to avoid dns lookups that may not be needed
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diff changeset
323 in_addr ip;
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324 if (inet_aton(question, &ip)) {
252
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325 return ip.s_addr;
236
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326 }
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327 }
328
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328 size_t n = strlen(question);
236
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329 if (question[n-1] == '.') {
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330 priv.my_write(question, n+1); // write the question including the null terminator
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331 }
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diff changeset
332 else {
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333 priv.my_write(question, n); // write the question
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334 priv.my_write(".", 2); // and the fully qualified . terminator and null string terminator
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335 }
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diff changeset
336 glommer glom;
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337 char *buf = (char *)&glom;
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338 priv.my_read(buf, sizeof(glom.length));
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339 buf += sizeof(glom.length);
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340 #ifdef RESOLVER_DEBUG
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341 char text[1000];
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342 snprintf(text, sizeof(text), "dns_interface() wrote question %s and has answer length %d", question, glom.length);
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343 my_syslog(text);
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diff changeset
344 #endif
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345 if (glom.length == 0) return 0;
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346 if (glom.length > sizeof(glom.answer)) {
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347 priv.err = true;
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348 return 0; // cannot process overlarge answers
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349 }
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350 priv.my_read(buf, glom.length);
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351
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352 #ifdef NS_PACKETSZ
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353 // now we need to lock the resolver mutex to keep the milter threads from
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354 // stepping on each other while parsing the dns answer.
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355 uint32_t ret_address = 0;
236
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356 pthread_mutex_lock(&resolve_mutex);
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357 // parse the answer
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diff changeset
358 ns_msg handle;
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359 ns_rr rr;
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360 if (ns_initparse(glom.answer, glom.length, &handle) == 0) {
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361 // look for ns names
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362 if (nameservers) {
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363 ns_map &ns = *nameservers;
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364 int rrnum = 0;
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365 while (ns_parserr(&handle, ns_s_ns, rrnum++, &rr) == 0) {
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366 if (ns_rr_type(rr) == ns_t_ns) {
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367 char nam[NS_MAXDNAME+1];
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368 char *n = nam;
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369 const u_char *p = ns_rr_rdata(rr);
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370 while (((n-nam) < NS_MAXDNAME) && ((size_t)(p-glom.answer) < glom.length) && *p) {
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371 size_t s = *(p++);
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diff changeset
372 if (s > 191) {
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373 // compression pointer
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374 s = (s-192)*256 + *(p++);
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375 if (s >= glom.length) break; // pointer outside bounds of answer
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376 p = glom.answer + s;
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377 s = *(p++);
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378 }
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diff changeset
379 if (s > 0) {
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diff changeset
380 if ((size_t)(n-nam) >= (NS_MAXDNAME-s)) break; // destination would overflow name buffer
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diff changeset
381 if ((size_t)(p-glom.answer) >= (glom.length-s)) break; // source outside bounds of answer
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diff changeset
382 memcpy(n, p, s);
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diff changeset
383 n += s;
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diff changeset
384 p += s;
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diff changeset
385 *(n++) = '.';
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diff changeset
386 }
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diff changeset
387 }
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diff changeset
388 if (n-nam) n--; // remove trailing .
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diff changeset
389 *n = '\0'; // null terminate it
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diff changeset
390 ns.add(nam, question); // ns host to lookup later
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diff changeset
391 }
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diff changeset
392 }
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diff changeset
393 rrnum = 0;
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diff changeset
394 while (ns_parserr(&handle, ns_s_ar, rrnum++, &rr) == 0) {
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diff changeset
395 if (ns_rr_type(rr) == ns_t_a) {
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diff changeset
396 char* nam = (char*)ns_rr_name(rr);
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diff changeset
397 ns_mapper::iterator i = ns.ns_ip.find(nam);
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diff changeset
398 if (i != ns.ns_ip.end()) {
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parents: 235
diff changeset
399 // we want this ip address
252
836b7f2357f9 need ntohl() before using masks that are defined in host byte order
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parents: 249
diff changeset
400 uint32_t address;
236
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diff changeset
401 memcpy(&address, ns_rr_rdata(rr), sizeof(address));
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diff changeset
402 ns.ns_ip[nam] = address;
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parents: 235
diff changeset
403 }
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parents: 235
diff changeset
404 }
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parents: 235
diff changeset
405 }
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parents: 235
diff changeset
406 }
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parents: 235
diff changeset
407 int rrnum = 0;
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parents: 235
diff changeset
408 while (ns_parserr(&handle, ns_s_an, rrnum++, &rr) == 0) {
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parents: 235
diff changeset
409 if (ns_rr_type(rr) == ns_t_a) {
252
836b7f2357f9 need ntohl() before using masks that are defined in host byte order
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parents: 249
diff changeset
410 uint32_t address;
236
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parents: 235
diff changeset
411 memcpy(&address, ns_rr_rdata(rr), sizeof(address));
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diff changeset
412 ret_address = address;
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diff changeset
413 }
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diff changeset
414 }
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diff changeset
415 }
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diff changeset
416 pthread_mutex_unlock(&resolve_mutex);
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diff changeset
417 #ifdef RESOLVER_DEBUG
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diff changeset
418 snprintf(text, sizeof(text), "dns_interface() found ip %d", ret_address);
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diff changeset
419 my_syslog(text);
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diff changeset
420 #endif
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diff changeset
421 return ret_address;
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diff changeset
422 #else
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diff changeset
423 return glom.answer;
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diff changeset
424 #endif
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diff changeset
425 }
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diff changeset
426
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parents: 235
diff changeset
427
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diff changeset
428 ////////////////////////////////////////////////
270
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diff changeset
429 // lookup a hostname on the uribl
236
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diff changeset
430 //
270
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431 // if we find hostname on the uribl, return true and point found to hostname
236
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diff changeset
432 // as a string registered in hosts.
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diff changeset
433 // otherwise, return false and preserve the value of found.
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diff changeset
434 //
270
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435 bool uriblookup(mlfiPriv &priv, string_set &hosts, const char *hostname, const char *&found) ;
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436 bool uriblookup(mlfiPriv &priv, string_set &hosts, const char *hostname, const char *&found) {
236
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diff changeset
437 char buf[maxlen];
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diff changeset
438 snprintf(buf, sizeof(buf), "%s.%s.", hostname, priv.uribl_suffix);
270
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439 uint32_t ip = ntohl(dns_interface(priv, buf, false, NULL));
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diff changeset
440 if (ip and (ip != 0x7f000000)) {
236
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diff changeset
441 if (debug_syslog > 2) {
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diff changeset
442 char tmp[maxlen];
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diff changeset
443 snprintf(tmp, sizeof(tmp), "found %s on %s", hostname, priv.uribl_suffix);
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diff changeset
444 my_syslog(tmp);
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diff changeset
445 }
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diff changeset
446 found = register_string(hosts, hostname);
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diff changeset
447 return true;
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diff changeset
448 }
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diff changeset
449 return false;
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diff changeset
450 }
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parents: 235
diff changeset
451
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diff changeset
452
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diff changeset
453 ////////////////////////////////////////////////
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diff changeset
454 // uribl checker
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diff changeset
455 // -------------
270
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456 // hostname MUST not have a trailing dot. Find the tld part of
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diff changeset
457 // the hostname, and add one more level. If that is listed on
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diff changeset
458 // the uribl, return true and point found to the part of the
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459 // hostname that we found as a string registered in hosts.
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diff changeset
460 // Otherwise, return false and preserve the value of found.
236
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diff changeset
461 //
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diff changeset
462 bool check_uribl(mlfiPriv &priv, string_set &hosts, const char *hostname, const char *&found) ;
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463 bool check_uribl(mlfiPriv &priv, string_set &hosts, const char *hostname, const char *&found) {
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diff changeset
464 in_addr ip;
270
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465 if (inet_aton(hostname, &ip)) return false; // don't check ip addresses in uribls
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diff changeset
466 const char* components[maxlen];
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467 int n = 0; // number of components in the hostname
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diff changeset
468 while (n < maxlen) {
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diff changeset
469 components[n++] = hostname;
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470 const char *c = strchr(hostname, '.');
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diff changeset
471 if (!c) break;
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diff changeset
472 hostname = c+1;
236
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diff changeset
473 }
270
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diff changeset
474 string_set *tlds = priv.memory->get_tlds();
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diff changeset
475 string_set *tldwilds = priv.memory->get_tldwilds();
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diff changeset
476 string_set *tldnots = priv.memory->get_tldnots();
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diff changeset
477 string_set::iterator xtlds = tlds->end();
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diff changeset
478 string_set::iterator xtldwilds = tldwilds->end();
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diff changeset
479 string_set::iterator xtldnots = tldnots->end();
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diff changeset
480 for (int i=max(0,n-4); i<n; i++) {
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diff changeset
481 const char* name = components[i];
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diff changeset
482 bool rc = false;
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483 string_set::iterator tt = tldnots->find(name);
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diff changeset
484 if (tt != xtldnots) {
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diff changeset
485 rc = true;
236
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diff changeset
486 }
270
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diff changeset
487 else {
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488 tt = tldwilds->find(name);
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diff changeset
489 if (tt != xtldwilds) {
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diff changeset
490 if (i > 1) {
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diff changeset
491 rc = true;
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diff changeset
492 name = components[i-2];
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diff changeset
493 }
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diff changeset
494 else return false;
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diff changeset
495 }
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diff changeset
496 else {
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diff changeset
497 tt = tlds->find(name);
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diff changeset
498 if (tt != xtlds) {
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diff changeset
499 if (i > 0) {
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diff changeset
500 rc = true;
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diff changeset
501 name = components[i-1];
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diff changeset
502 }
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diff changeset
503 else return false;
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diff changeset
504 }
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diff changeset
505 }
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diff changeset
506 }
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diff changeset
507 if (rc) {
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diff changeset
508 return uriblookup(priv, hosts, name, found);
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diff changeset
509 }
236
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diff changeset
510 }
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diff changeset
511 return false;
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diff changeset
512 }
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diff changeset
513
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diff changeset
514
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
515 mlfiPriv::mlfiPriv() {
192
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516 pthread_mutex_lock(&config_mutex);
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517 pc = config;
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diff changeset
518 pc->reference_count++;
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519 pthread_mutex_unlock(&config_mutex);
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diff changeset
520 get_fd();
230
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diff changeset
521 ctx = NULL;
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522 eom = false;
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523 ip = 0;
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524 helo = NULL;
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parents: 227
diff changeset
525 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
526 origaddr = NULL;
321
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parents: 311
diff changeset
527 fromaddr = NULL;
e172dc10fe24 add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 311
diff changeset
528 header_count = 0;
322
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
529 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
530 queueid = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
531 authenticated = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
532 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
533 client_dns_name = NULL;
268
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
534 client_dns_forged = false;
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
535 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
536 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
537 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
538 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
539 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
540 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
541 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
542 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
543 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
544 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
545 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
546 memory = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
547 scanner = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
548 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
549 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
550 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
551 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
552 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
553 assassin = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
554 dccifd = NULL;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
555 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
556
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
557 mlfiPriv::~mlfiPriv() {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
558 return_fd();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
559 pthread_mutex_lock(&config_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
560 pc->reference_count--;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
561 bool last = (!pc->reference_count) && (pc != config);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
562 pthread_mutex_unlock(&config_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
563 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
564 if (helo) free((void*)helo);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
565 reset(true);
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
566 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
567
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
568 void mlfiPriv::reset(bool final) {
194
688ec12a3c0c delay autowhitelisting to avoid out of office reply bots
carl
parents: 193
diff changeset
569 while (!delayer.empty()) {
231
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
570 DELAYWHITEP dwp = delayer.front();
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
571 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
572 if (loto) free((void*)loto);
193
3ea79ef741a0 delay autowhitelisting to avoid out of office reply bots
carl
parents: 192
diff changeset
573 delete dwp;
3ea79ef741a0 delay autowhitelisting to avoid out of office reply bots
carl
parents: 192
diff changeset
574 delayer.pop_front();
3ea79ef741a0 delay autowhitelisting to avoid out of office reply bots
carl
parents: 192
diff changeset
575 }
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
576 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
577 if (origaddr) free((void*)origaddr);
321
e172dc10fe24 add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 311
diff changeset
578 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
579 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
580 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
581 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
582 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
583 discard(dkim_signers);
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
584 discard(hosts_uribl);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
585 delayer.clear();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
586 discard(env_to);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
587 if (memory) delete memory;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
588 if (scanner) delete scanner;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
589 if (assassin) delete assassin;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
590 if (dccifd) delete dccifd;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
591 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
592 ctx = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
593 eom = false;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
594 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
595 origaddr = NULL;
321
e172dc10fe24 add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 311
diff changeset
596 fromaddr = NULL;
e172dc10fe24 add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 311
diff changeset
597 header_count = 0;
322
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
598 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
599 queueid = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
600 authenticated = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
601 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
602 client_dns_name = NULL;
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
603 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
604 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
605 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
606 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
607 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
608 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
609 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
610 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
611 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
612 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
613 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
614 memory = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
615 scanner = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
616 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
617 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
618 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
619 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
620 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
621 assassin = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
622 dccifd = NULL;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
623 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
624 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
625
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
626 void mlfiPriv::get_fd() {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
627 err = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
628 fd = NULL_SOCKET;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
629 int result = pthread_mutex_lock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
630 if (!result) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
631 std::set<int>::iterator i;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
632 i = fd_pool.begin();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
633 if (i != fd_pool.end()) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
634 // have at least one fd in the pool
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
635 err = false;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
636 fd = *i;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
637 fd_pool.erase(fd);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
638 resolver_pool_size--;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
639 pthread_mutex_unlock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
640 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
641 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
642 // pool is empty, get a new fd
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
643 pthread_mutex_unlock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
644 fd = my_connect();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
645 err = (fd == NULL_SOCKET);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
646 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
647 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
648 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
649 // cannot lock the pool, just get a new fd
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
650 fd = my_connect();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
651 err = (fd == NULL_SOCKET);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
652 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
653 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
654
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
655 void mlfiPriv::return_fd() {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
656 if (err) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
657 // 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
658 my_disconnect(fd);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
659 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
660 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
661 int result = pthread_mutex_lock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
662 if (!result) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
663 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
664 // return the fd to the pool
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
665 fd_pool.insert(fd);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
666 resolver_pool_size++;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
667 pthread_mutex_unlock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
668 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
669 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
670 // 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
671 // 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
672 pthread_mutex_unlock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
673 my_disconnect(fd);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
674 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
675 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
676 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
677 // 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
678 my_disconnect(fd);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
679 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
680 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
681 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
682
177
a4d313c2460b start embedded dcc filtering
carl
parents: 174
diff changeset
683 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
684 if (err) return 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
685 size_t rs = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
686 while (len) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
687 size_t ws = write(fd, buf, len);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
688 if (ws > 0) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
689 rs += ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
690 len -= ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
691 buf += ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
692 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
693 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
694 // peer closed the socket!
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
695 rs = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
696 err = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
697 break;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
698 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
699 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
700 return rs;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
701 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
702
177
a4d313c2460b start embedded dcc filtering
carl
parents: 174
diff changeset
703 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
704 if (err) return 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
705 size_t rs = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
706 while (len) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
707 size_t ws = read(fd, buf, len);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
708 if (ws > 0) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
709 rs += ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
710 len -= ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
711 buf += ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
712 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
713 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
714 // peer closed the socket!
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
715 rs = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
716 err = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
717 break;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
718 }
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 return rs;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
721 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
722
377
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
723 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
724 const char *st;
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
725 if (uribl_suffix) {
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
726 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
727 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
728 }
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
729 }
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
730 return NULL;
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
731 }
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
732
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
733 void mlfiPriv::need_content_filter(CONTEXT &con) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
734 if (!memory) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
735 // first recipient that needs content filtering sets
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
736 // 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
737 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
738 scanner = new url_scanner(memory);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
739 content_suffix = con.get_content_suffix();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
740 content_message = con.get_content_message();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
741 uribl_suffix = con.get_uribl_suffix();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
742 uribl_message = con.get_uribl_message();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
743 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
744 // 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
745 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
746 if (helo) {
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
747 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
748 }
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
749 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
750 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
751 }
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
752 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
753 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
754 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
755 }
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
756 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
757 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
758 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
759
186
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
760
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
761 mlfiPriv* fetch_priv_from_ctx(SMFICTX *ctx);
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
762 mlfiPriv* fetch_priv_from_ctx(SMFICTX *ctx)
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
763 {
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
764 mlfiPriv *priv = (struct mlfiPriv *)smfi_getpriv(ctx);
187
f0eda59e8afd fix null pointer dereference from missing HELO command
carl
parents: 186
diff changeset
765 priv->ctx = ctx;
186
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
766 return priv;
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
767 }
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
768 #define MLFIPRIV fetch_priv_from_ctx(ctx)
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
769
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
770
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
771
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
772 ////////////////////////////////////////////////
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
773 // syslog a message
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
774 //
310
802e2b779ed1 enable smtp verify logging
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
775 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
776 char buf[maxlen];
311
f5547e7b3a09 enable smtp verify logging
Carl Byington <carl@five-ten-sg.com>
parents: 310
diff changeset
777 if (queueid && queueid[0]) {
310
802e2b779ed1 enable smtp verify logging
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
778 snprintf(buf, sizeof(buf), "%s: %s", queueid, text);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
779 text = buf;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
780 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
781 if (use_syslog) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
782 pthread_mutex_lock(&syslog_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
783 if (!syslog_opened) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
784 openlog("dnsbl", LOG_PID, LOG_MAIL);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
785 syslog_opened = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
786 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
787 syslog(LOG_NOTICE, "%s", text);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
788 pthread_mutex_unlock(&syslog_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
789 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
790 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
791 printf("%s \n", text);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
792 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
793 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
794
310
802e2b779ed1 enable smtp verify logging
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
795 void my_syslog(mlfiPriv *priv, const char *text) {
802e2b779ed1 enable smtp verify logging
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
796 if (priv) my_syslog(priv->queueid, text);
802e2b779ed1 enable smtp verify logging
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
797 else my_syslog((const char *)NULL, text);
802e2b779ed1 enable smtp verify logging
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
798 }
802e2b779ed1 enable smtp verify logging
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
799
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
800 void my_syslog(mlfiPriv *priv, const string text) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
801 if (debug_syslog > 3) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
802 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
803 strncpy(buf, text.c_str(), sizeof(buf));
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
804 buf[maxlen-1] = '\0'; // ensure null termination
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
805 my_syslog(priv, buf);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
806 }
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
807 }
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
808
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
809 void my_syslog(const char *text) {
310
802e2b779ed1 enable smtp verify logging
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
810 my_syslog((const char *)NULL, text);
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
811 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
812
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
813
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
814 ////////////////////////////////////////////////
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
815 // 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
816 // write the result back to the socket.
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
817
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
818 void process_resolver_requests(int socket);
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
819 void process_resolver_requests(int socket) {
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
820 #ifdef NS_MAXDNAME
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
821 char question[NS_MAXDNAME];
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
822 #else
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
823 char question[1000];
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
824 #endif
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
825 glommer glom;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
826
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
827 int maxq = sizeof(question);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
828 while (true) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
829 // read a question
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carl
parents: 191
diff changeset
830 int rs = 0;
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carl
parents: 191
diff changeset
831 while (rs < maxq) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
832 int ns = read(socket, question+rs, maxq-rs);
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carl
parents: 191
diff changeset
833 if (ns > 0) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
834 rs += ns;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
835 if (question[rs-1] == '\0') {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
836 // last byte read was the null terminator, we are done
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carl
parents: 191
diff changeset
837 break;
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carl
parents: 191
diff changeset
838 }
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carl
parents: 191
diff changeset
839 }
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carl
parents: 191
diff changeset
840 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
841 // peer closed the socket
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carl
parents: 191
diff changeset
842 #ifdef RESOLVER_DEBUG
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carl
parents: 191
diff changeset
843 my_syslog("process_resolver_requests() peer closed socket while reading question");
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carl
parents: 191
diff changeset
844 #endif
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carl
parents: 191
diff changeset
845 shutdown(socket, SHUT_RDWR);
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carl
parents: 191
diff changeset
846 close(socket);
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carl
parents: 191
diff changeset
847 return;
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carl
parents: 191
diff changeset
848 }
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carl
parents: 191
diff changeset
849 }
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carl
parents: 191
diff changeset
850 question[rs-1] = '\0'; // ensure null termination
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
851
192
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carl
parents: 191
diff changeset
852 // find the answer
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
853 #ifdef NS_PACKETSZ
192
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parents: 191
diff changeset
854 #ifdef RESOLVER_DEBUG
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carl
parents: 191
diff changeset
855 char text[1000];
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parents: 191
diff changeset
856 snprintf(text, sizeof(text), "process_resolver_requests() has a question %s", question);
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carl
parents: 191
diff changeset
857 my_syslog(text);
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carl
parents: 191
diff changeset
858 #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
859 int res_result = res_search(question, ns_c_in, ns_t_a, glom.answer, sizeof(glom.answer));
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
860 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
861 else glom.length = (size_t)res_result;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
862 #else
192
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parents: 191
diff changeset
863 glom.length = sizeof(glom.answer);
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carl
parents: 191
diff changeset
864 glom.answer = 0;
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carl
parents: 191
diff changeset
865 struct hostent *host = gethostbyname(question);
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carl
parents: 191
diff changeset
866 if (host && (host->h_addrtype == AF_INET)) {
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carl
parents: 191
diff changeset
867 memcpy(&glom.answer, host->h_addr, sizeof(glom.answer));
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carl
parents: 191
diff changeset
868 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
869 #endif
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carl
parents: 92
diff changeset
870
192
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carl
parents: 191
diff changeset
871 // write the answer
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carl
parents: 191
diff changeset
872 char *buf = (char *)&glom;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
873 int len = glom.length + sizeof(glom.length);
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carl
parents: 191
diff changeset
874 #ifdef RESOLVER_DEBUG
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carl
parents: 191
diff changeset
875 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
876 my_syslog(text);
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carl
parents: 191
diff changeset
877 #endif
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carl
parents: 191
diff changeset
878 int ws = 0;
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carl
parents: 191
diff changeset
879 while (len > ws) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
880 int ns = write(socket, buf+ws, len-ws);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
881 if (ns > 0) {
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carl
parents: 191
diff changeset
882 ws += ns;
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carl
parents: 191
diff changeset
883 }
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carl
parents: 191
diff changeset
884 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
885 // peer closed the socket!
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
886 #ifdef RESOLVER_DEBUG
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
887 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
888 #endif
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
889 shutdown(socket, SHUT_RDWR);
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carl
parents: 191
diff changeset
890 close(socket);
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carl
parents: 191
diff changeset
891 return;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
892 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
893 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
894 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
895 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
896
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
897
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
898 ////////////////////////////////////////////////
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
899 // check a single dns list, return ip address in network byte order
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
900 //
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
901 uint32_t check_single(mlfiPriv &priv, int32_t ip, const char *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
902 uint32_t check_single(mlfiPriv &priv, int32_t ip, const char *suffix) {
192
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carl
parents: 191
diff changeset
903 // make a dns question
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
904 const u_char *src = (const u_char *)&ip;
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
905 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
906 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
907 if ((src[0] == 192) && (src[1] == 168)) return 0;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
908 if ((src[0] == 172) && (16 <= src[1]) && (src[1] <= 31)) return 0;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
909 #ifdef NS_MAXDNAME
192
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carl
parents: 191
diff changeset
910 char question[NS_MAXDNAME];
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
911 #else
192
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carl
parents: 191
diff changeset
912 char question[1000];
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
913 #endif
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
914 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
915 // ask the question, if we get an A record it implies a blacklisted ip address
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
916 return dns_interface(priv, question, false, NULL);
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
917 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
918
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
919
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
920 ////////////////////////////////////////////////
192
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carl
parents: 191
diff changeset
921 // check a single dnsbl
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
922 //
242
d8ee4c97b9ab 64 bit fixes for libresolv.a
Carl Byington <carl@five-ten-sg.com>
parents: 238
diff changeset
923 bool check_single(mlfiPriv &priv, int32_t ip, DNSBL &bl);
d8ee4c97b9ab 64 bit fixes for libresolv.a
Carl Byington <carl@five-ten-sg.com>
parents: 238
diff changeset
924 bool check_single(mlfiPriv &priv, int32_t ip, DNSBL &bl) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
925 return check_single(priv, ip, bl.suffix);
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
926 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
927
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
928
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
929 ////////////////////////////////////////////////
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
930 // check a single dnswl
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
931 //
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
932 bool check_single(mlfiPriv &priv, int32_t ip, DNSWL &wl);
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
933 bool check_single(mlfiPriv &priv, int32_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
934 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
935 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
936 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
937 uint32_t m2 = (uint32_t)0x000000ff;
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
938 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
939 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
940 if ((int)l >= wl.level) return true;
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
941 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
942 return false;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
943 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
944
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
945
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
946 ////////////////////////////////////////////////
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
947 // check the dnsbls specified for this recipient
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
948 //
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
949 bool check_dnsbl(mlfiPriv &priv, dnsblp_list &dnsbll, DNSBLP &rejectlist);
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
950 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
951 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
952 DNSBLP dp = *i; // non null by construction
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
953 bool st;
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
954 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
955 if (f == priv.checked_black.end()) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
956 // have not checked this list yet
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
957 st = check_single(priv, priv.ip, *dp);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
958 rejectlist = dp;
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
959 priv.checked_black[dp] = st;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
960 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
961 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
962 st = (*f).second;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
963 rejectlist = (*f).first;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
964 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
965 if (st) return st;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
966 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
967 return false;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
968 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
969
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
970
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
971 ////////////////////////////////////////////////
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
972 // check the dnswls specified for this recipient
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
973 //
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
974 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
975 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
976 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
977 DNSWLP dp = *i; // non null by construction
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
978 bool st;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
979 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
980 if (f == priv.checked_white.end()) {
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
981 // have not checked this list yet
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
982 st = check_single(priv, priv.ip, *dp);
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
983 acceptlist = dp;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
984 priv.checked_white[dp] = st;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
985 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
986 else {
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
987 st = (*f).second;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
988 acceptlist = (*f).first;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
989 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
990 if (st) return st;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
991 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
992 return false;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
993 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
994
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
995
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
996 ////////////////////////////////////////////////
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
997 // check the hosts from the body against the content filter and uribl dnsbls
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
998 //
124
ea6f9c812faa put hostname in smtp message for uribl style lookups
carl
parents: 123
diff changeset
999 //
242
d8ee4c97b9ab 64 bit fixes for libresolv.a
Carl Byington <carl@five-ten-sg.com>
parents: 238
diff changeset
1000 bool check_hosts(mlfiPriv &priv, bool random, int limit, const char *&msg, const char *&host, int32_t &ip, const char *&found);
d8ee4c97b9ab 64 bit fixes for libresolv.a
Carl Byington <carl@five-ten-sg.com>
parents: 238
diff changeset
1001 bool check_hosts(mlfiPriv &priv, bool random, int limit, const char *&msg, const char *&host, int32_t &ip, const char *&found) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1002 found = NULL; // normally ip address style
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1003 if (!priv.content_suffix && !priv.uribl_suffix) return false; // nothing to check
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carl
parents: 191
diff changeset
1004 string_set &hosts = priv.memory->get_hosts();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1005 string_set &ignore = *priv.content_host_ignore;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1006
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1007 int count = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1008 int cnt = hosts.size(); // number of hosts we could look at
242
d8ee4c97b9ab 64 bit fixes for libresolv.a
Carl Byington <carl@five-ten-sg.com>
parents: 238
diff changeset
1009 int32_t_set ips;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1010 ns_map nameservers;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1011 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
1012 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
1013
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1014 // 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
1015 string_set::iterator j = ignore.find(host);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1016 if (j != ignore.end()) continue;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1017
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1018 // 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
1019 if ((cnt > limit) && (limit > 0) && random) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1020 int r = rand() % cnt;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1021 if (r >= limit) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1022 if (debug_syslog > 2) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1023 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1024 snprintf(buf, sizeof(buf), "host %s skipped", host);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1025 my_syslog(&priv, buf);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1026 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1027 continue;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1028 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1029 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1030 count++;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1031 ip = dns_interface(priv, host, true, &nameservers);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1032 if (debug_syslog > 2) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1033 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1034 if (ip) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1035 char adr[sizeof "255.255.255.255 "];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1036 adr[0] = '\0';
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1037 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
1038 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
1039 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1040 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1041 snprintf(buf, sizeof(buf), "host %s not found", host);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1042 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1043 my_syslog(&priv, buf);
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 (ip) {
242
d8ee4c97b9ab 64 bit fixes for libresolv.a
Carl Byington <carl@five-ten-sg.com>
parents: 238
diff changeset
1046 int32_t_set::iterator i = ips.find(ip);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1047 if (i == ips.end()) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1048 // we haven't looked this up yet
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1049 ips.insert(ip);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1050 // check dnsbl style list
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1051 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
1052 msg = priv.content_message;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1053 return true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1054 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1055 // Check uribl & surbl style list
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1056 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
1057 msg = priv.uribl_message;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1058 return true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1059 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1060 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1061 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1062 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1063 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
1064 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
1065 count++;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1066 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
1067 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
1068 ip = (*i).second;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1069 if (!ip) ip = dns_interface(priv, host, false, NULL);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1070 if (debug_syslog > 2) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1071 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1072 if (ip) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1073 char adr[sizeof "255.255.255.255 "];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1074 adr[0] = '\0';
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1075 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
1076 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
1077 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1078 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1079 snprintf(buf, sizeof(buf), "ns %s not found", host);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1080 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1081 my_syslog(&priv, buf);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1082 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1083 if (ip) {
242
d8ee4c97b9ab 64 bit fixes for libresolv.a
Carl Byington <carl@five-ten-sg.com>
parents: 238
diff changeset
1084 int32_t_set::iterator i = ips.find(ip);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1085 if (i == ips.end()) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1086 ips.insert(ip);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1087 if (check_single(priv, ip, priv.content_suffix)) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1088 msg = priv.content_message;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1089 string_map::iterator j = nameservers.ns_host.find(host);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1090 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
1091 const char *refer = (*j).second;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1092 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1093 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
1094 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
1095 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1096 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1097 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
1098 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1099 return true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1100 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1101 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1102 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1103 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1104 return false;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1105 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1106
127
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 126
diff changeset
1107
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1108 ////////////////////////////////////////////////
127
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 126
diff changeset
1109 //
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 126
diff changeset
1110 // 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
1111 // enclosed in <>. I think older versions of sendmail supplied the <>
127
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 126
diff changeset
1112 // 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
1113 // 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
1114 // 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
1115 // 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
1116 // 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
1117 //
346
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1118 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
1119 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
1120 if (!email) return strdup("<>");
328
b4f766947202 allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 327
diff changeset
1121 size_t n = strlen(email);
b4f766947202 allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 327
diff changeset
1122 if ((n > 1) && (email[0] == '<') && (email[n-1] == '>')) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1123 n -= 2;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1124 email++;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1125 }
328
b4f766947202 allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 327
diff changeset
1126 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
1127 n -= 2;
b4f766947202 allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 327
diff changeset
1128 email++;
b4f766947202 allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 327
diff changeset
1129 }
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
1130 if (n == 0) return strdup("<>");
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1131 char *key = strdup(email);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1132 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
1133 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
1134
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1135 if (srs) {
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1136 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
1137 // 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
1138 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
1139 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
1140 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
1141 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
1142 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
1143 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
1144 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
1145 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
1146 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
1147 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
1148 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
1149 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
1150 strcat(newkey, "@"); // @
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1151 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
1152 free(key);
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1153 key = newkey;
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1154 }
235
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1155 }
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1156 }
346
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1157 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
1158 // 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
1159 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
1160 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
1161 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
1162 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
1163 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
1164 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
1165 free(key);
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1166 key = newkey;
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1167 }
246
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1168 }
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1169 }
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1170 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1171 return key;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1172 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1173
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1174
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1175 ////////////////////////////////////////////////
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1176 // start of sendmail milter interfaces
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1177 //
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1178 sfsistat mlfi_connect(SMFICTX *ctx, char *hostname, _SOCK_ADDR *hostaddr)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1179 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1180 // allocate some private memory
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1181 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
1182 if (hostaddr && (hostaddr->sa_family == AF_INET)) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1183 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
1184 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1185 // save the private data
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1186 smfi_setpriv(ctx, (void*)priv);
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1187
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1188 // continue processing
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1189 return SMFIS_CONTINUE;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1190 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1191
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1192 sfsistat mlfi_helo(SMFICTX * ctx, char *helohost)
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1193 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1194 mlfiPriv &priv = *MLFIPRIV;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1195 priv.helo = strdup(helohost);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1196 return SMFIS_CONTINUE;
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1197 }
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1198
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1199 sfsistat mlfi_envfrom(SMFICTX *ctx, char **from)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1200 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1201 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
1202 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
1203 priv.origaddr = to_lower_string(from[0], false);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1204 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
1205 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
1206 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
1207 priv.client_name = smfi_getsymval(ctx, (char*)"_");
191
2a67d31099c3 fix null pointer dereference from missing HELO command
carl
parents: 190
diff changeset
1208 if (!priv.helo) priv.helo = strdup("unknown");
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1209 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
1210 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
1211 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
1212 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
1213 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
1214 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
1215 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
1216 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
1217 //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
1218 //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
1219 //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
1220 }
268
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1221 p = strstr(priv.client_name, "] (may be forged)");
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1222 if (p) {
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1223 priv.client_dns_forged = true;
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1224 if (priv.client_dns_name) {
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1225 char text[500];
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1226 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
1227 my_syslog(text);
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1228 }
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1229 }
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
1230 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1231 if (spamc != spamc_empty) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1232 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
1233 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1234 if (dccifd_port) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1235 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
1236 }
290
bb69fdc3acaa Unique ip connection limits only apply to authenticated connections
Carl Byington <carl@five-ten-sg.com>
parents: 286
diff changeset
1237 if (priv.authenticated) {
284
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 282
diff changeset
1238 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
1239 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
1240 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
1241 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
1242 if (debug_syslog > 1) {
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 282
diff changeset
1243 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
1244 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
1245 my_syslog(&priv, msg);
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 282
diff changeset
1246 }
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 282
diff changeset
1247 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
1248 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
1249 return SMFIS_REJECT;
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 282
diff changeset
1250 }
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 282
diff changeset
1251 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1252 return SMFIS_CONTINUE;
94
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 sfsistat mlfi_envrcpt(SMFICTX *ctx, char **rcpt)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1256 {
278
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 272
diff changeset
1257 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
1258 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
1259 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
1260 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
1261 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
1262 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
1263 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
1264 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
1265 bool from_root = (strncasecmp(priv.mailaddr, "root@", 5) == 0);
174
da0c41b9f672 don't whitelist addresses with embedded spaces
carl
parents: 173
diff changeset
1266
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1267 // 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
1268 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
1269 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
1270 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
1271 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1272 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1273 // 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
1274 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
1275 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
1276 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
1277 // tell spam assassin and dccifd about this recipient
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1278 if (priv.assassin) priv.assassin->mlfi_envrcpt(ctx, loto);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1279 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
1280 // loto sending a reply back to priv.mailaddr
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1281 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
1282 const char *replyvalue = con2.find_from(loto);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1283 if (debug_syslog > 1) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1284 char buf[maxlen];
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1285 char buf2[maxlen];
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1286 char msg[maxlen];
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1287 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
1288 my_syslog(&priv, msg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1289 }
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1290 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
1291 status st = oksofar;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1292 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
1293 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
1294 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1295 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1296 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
1297 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
1298 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
1299 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
1300 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
1301 if (debug_syslog > 1) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1302 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
1303 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
1304 my_syslog(&priv, msg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1305 }
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
1306 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
1307 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
1308 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1309 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1310 st = white;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1311 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1312 else if (fromvalue == token_black) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1313 st = black;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1314 }
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
1315 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
1316 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
1317 }
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
1318 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
1319 // 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
1320 // 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
1321 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
1322 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
1323 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
1324 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
1325 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
1326 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
1327 }
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
1328 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
1329 }
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
1330 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
1331 }
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
1332
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
1333 if (st == oksofar) {
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1334 // check the dns based lists, whitelist first
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1335 DNSWLP acceptlist = NULL; // list that caused the whitelisting
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1336 if (check_dnswl(priv, con.get_dnswl_list(), acceptlist)) {
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1337 st = white;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1338 if (debug_syslog > 1) {
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1339 char msg[maxlen];
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1340 snprintf(msg, sizeof(msg), "whitelisted by %s", acceptlist->name);
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1341 my_syslog(&priv, msg);
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1342 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1343 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1344 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
1345 // 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
1346 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
1347 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
1348 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
1349 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
1350 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
1351 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
1352 return SMFIS_REJECT;
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1353 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1354 }
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
1355
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1356 if (st == oksofar) {
268
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1357 // check forged rdns
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1358 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
1359 // reject the recipient based on forged reverse dns
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1360 char buf[maxlen];
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1361 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
1362 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
1363 return SMFIS_REJECT;
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1364 }
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1365 // 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
1366 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
1367 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
1368 if (msg) {
13905d36ca82 Generic regex now matches against the reverse dns PTR value
Carl Byington <carl@five-ten-sg.com>
parents: 296
diff changeset
1369 // 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
1370 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
1371 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
1372 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
1373 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
1374 }
192
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 }
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
1377
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1378 if (st == black) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1379 // 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
1380 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
1381 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1382 }
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
1383
203
92a5c866bdfa Verify from/to pairs even if they might be explicitly whitelisted.
Carl Byington <carl@five-ten-sg.com>
parents: 194
diff changeset
1384 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
1385 // 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
1386 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
1387 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
1388 free((void*)loto);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1389 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
1390 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
1391 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1392 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1393 }
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
1394
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
1395 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
1396 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
1397 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
1398 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
1399 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
1400 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
1401 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
1402 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
1403 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
1404 }
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
1405 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
1406 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
1407 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
1408 }
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
1409 }
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
1410
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1411 // 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
1412 // if needed to ensure we can accept replies
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1413 loto = to_lower_string(rcptaddr);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1414 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
1415
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1416 // check if local part is too big
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1417 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
1418 const char *p = strchr(loto, '@');
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1419 int len = (p) ? p-loto : max_local_size;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1420 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
1421
9f0d9fcb58dd Never add auto-whitelist entries for outgoing mail from localhost
Carl Byington <carl@five-ten-sg.com>
parents: 290
diff changeset
1422 // 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
1423 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
1424
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1425 // record it if we have a whitelister
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1426 if (w) {
231
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1427 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
1428 priv.delayer.push_back(dwp);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1429 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1430 else {
231
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1431 free((void*)loto); // or we free it here
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1432 }
179
8b86a894514d embedded dcc filtering
carl
parents: 178
diff changeset
1433
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1434 // accept the recipient
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1435 if (!con.get_content_filtering()) st = white;
179
8b86a894514d embedded dcc filtering
carl
parents: 178
diff changeset
1436
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1437 if (st == oksofar) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1438 // remember first content filtering context
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1439 if (con.get_content_filtering()) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1440 if (!priv.content_context) priv.content_context = &con;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1441 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
1442 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
1443 return SMFIS_TEMPFAIL;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1444 }
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
1445 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
1446 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
1447 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
1448 // 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
1449 if (priv.helo_uribl) {
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
1450 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
1451 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
1452 }
268
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1453 // 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
1454 if (priv.client_uribl) {
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
1455 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
1456 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
1457 }
268
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1458 // 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
1459 if (priv.from_uribl) {
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
1460 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
1461 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
1462 }
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
1463 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
1464 char buf[maxlen];
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
1465 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
1466 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
1467 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
1468 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1469 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1470 // 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
1471 register_string(priv.env_to, rcptaddr, &con);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1472 priv.only_whites = false;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1473 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
1474 (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
1475 priv.want_dccgrey |= (priv.dccifd) && // have dcc interface and
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1476 (con.get_grey()); // want to use it for greylisting
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1477 priv.want_dccbulk |= (priv.dccifd) && // have dcc interface and
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1478 (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
1479 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1480 if (st == white) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1481 priv.have_whites = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1482 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1483 return SMFIS_CONTINUE;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1484 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1485
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1486 sfsistat mlfi_header(SMFICTX* ctx, char* headerf, char* headerv)
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1487 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1488 mlfiPriv &priv = *MLFIPRIV;
321
e172dc10fe24 add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 311
diff changeset
1489 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
1490 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
1491 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
1492 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
1493 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
1494 }
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
1495 }
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
1496
322
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1497 if (priv.dkim_ok) {
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1498 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
1499 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
1500 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
1501 (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
1502 const int nmatch = 2;
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1503 regmatch_t match[nmatch];
326
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
1504 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
1505 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
1506 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
1507 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
1508 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
1509 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
1510 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
1511 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
1512 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
1513 value += e1 + 1;
326
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
1514 }
327
51846836ec92 allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 326
diff changeset
1515 else break;
322
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1516 }
326
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
1517 else break;
322
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1518 }
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1519 }
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
1520 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
1521 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
1522 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
1523 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
1524 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
1525 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
1526 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
1527 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
1528 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
1529 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
1530 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
1531 }
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
1532 }
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
1533 }
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
1534 else priv.dkim_ok = false;
322
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1535 }
328
b4f766947202 allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 327
diff changeset
1536 }
b4f766947202 allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 327
diff changeset
1537
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
1538 // 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
1539 // 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
1540 // 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
1541 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
1542 const int nmatch = 2;
b4f766947202 allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 327
diff changeset
1543 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
1544 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
1545 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
1546 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
1547 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
1548 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
1549 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
1550 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
1551 value[e1] = save;
322
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1552 }
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1553 }
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1554 }
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1555
231
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1556 // 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
1557 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
1558 ((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
1559 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
1560 }
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
1561
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1562 // other headers are only needed for content filtering
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1563 if (priv.authenticated) return SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1564 if (priv.only_whites) return SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1565 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
1566 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
1567 return SMFIS_CONTINUE;
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1568 }
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1569
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1570 sfsistat mlfi_eoh(SMFICTX* ctx)
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1571 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1572 mlfiPriv &priv = *MLFIPRIV;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1573 // delayed autowhitelisting
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1574 while (!priv.delayer.empty()) {
231
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1575 DELAYWHITEP dwp = priv.delayer.front();
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1576 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
1577 if (priv.allow_autowhitelisting) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1578 WHITELISTERP w = dwp->get_w();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1579 CONTEXTP con2 = dwp->get_con();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1580 if (debug_syslog > 1) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1581 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1582 char msg[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1583 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
1584 my_syslog(&priv, msg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1585 }
231
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1586 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
1587 }
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1588 else {
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1589 if (debug_syslog > 1) {
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1590 char msg[maxlen];
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1591 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
1592 my_syslog(&priv, msg);
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1593 }
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1594 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
1595 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1596 delete dwp;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1597 priv.delayer.pop_front();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1598 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1599 // content filtering
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1600 if (priv.authenticated) return SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1601 if (priv.only_whites) return SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1602 if (priv.want_spamassassin) priv.assassin->mlfi_eoh();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1603 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
1604 return SMFIS_CONTINUE;
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1605 }
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1606
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1607 sfsistat mlfi_body(SMFICTX *ctx, u_char *data, size_t len)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1608 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1609 mlfiPriv &priv = *MLFIPRIV;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1610 if (priv.authenticated) return SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1611 if (priv.only_whites) return SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1612 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
1613 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
1614 priv.scanner->scan(data, len);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1615 return SMFIS_CONTINUE;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1616 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1617
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1618 sfsistat mlfi_eom(SMFICTX *ctx)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1619 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1620 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
1621 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
1622 const char *host = NULL;
242
d8ee4c97b9ab 64 bit fixes for libresolv.a
Carl Byington <carl@five-ten-sg.com>
parents: 238
diff changeset
1623 int32_t ip;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1624 // process end of message
190
004b855c6c1f fix null pointer dereference from missing HELO command
carl
parents: 188
diff changeset
1625 priv.eom = true;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1626 if (priv.authenticated || priv.only_whites) rc = SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1627 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1628 // assert env_to not empty, it contains the
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1629 // non-whitelisted folks that want content filtering
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1630 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
1631 bool grey = false;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1632 int bulk = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1633 if (priv.want_dccgrey || priv.want_dccbulk) priv.dccifd->mlfi_eom(grey, bulk);
178
d6531c702be3 embedded dcc filtering
carl
parents: 177
diff changeset
1634
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1635 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1636 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
1637 string_set unknowns;
9800776436b9 allow dkim whitelisting to override uribl hosts in the mail body
Carl Byington <carl@five-ten-sg.com>
parents: 330
diff changeset
1638 string_set whites;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1639 bool random = false;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1640 int limit = 0;
377
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1641 const char *signer = NULL;
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1642 bool checked_signers = false;
326
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
1643 if (priv.dkim_signers.empty()) {
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
1644 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
1645 (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
1646 my_syslog(&priv, buf);
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
1647 }
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
1648 else {
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
1649 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
1650 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
1651 (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
1652 my_syslog(&priv, buf);
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
1653 }
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
1654 }
323
a6de27b0a1e9 add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 322
diff changeset
1655
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1656 for (context_map::iterator i=priv.env_to.begin(); i!=priv.env_to.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
1657 const char *rcpt = (*i).first;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1658 CONTEXT &con = *((*i).second);
331
9800776436b9 allow dkim whitelisting to override uribl hosts in the mail body
Carl Byington <carl@five-ten-sg.com>
parents: 330
diff changeset
1659 const char *st = con.acceptable_content(*priv.memory, score, bulk, priv.queueid, priv.dkim_signers, priv.fromaddr, msg);
9800776436b9 allow dkim whitelisting to override uribl hosts in the mail body
Carl Byington <carl@five-ten-sg.com>
parents: 330
diff changeset
1660 if (st == token_black) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1661 // bad html tags or excessive hosts or
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1662 // 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
1663 // 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
1664 // 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
1665 smfi_delrcpt(ctx, (char*)rcpt);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1666 }
331
9800776436b9 allow dkim whitelisting to override uribl hosts in the mail body
Carl Byington <carl@five-ten-sg.com>
parents: 330
diff changeset
1667 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
1668 if (!checked_signers) {
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1669 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
1670 checked_signers = true;
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1671 if (signer) {
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1672 snprintf(buf, sizeof(buf), "dkim signer %s on uribl", signer);
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1673 my_syslog(&priv, buf);
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1674 snprintf(buf, sizeof(buf), "Mail rejected - dkim signed by %s", signer);
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1675 msg = string(buf);
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1676 }
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1677 }
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1678 if (signer) {
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1679 // 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
1680 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
1681 }
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1682 else {
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1683 // still unknown
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1684 unknowns.insert(rcpt);
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1685 random |= con.get_host_random();
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1686 limit = max(limit, con.get_host_limit());
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
1687 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1688 }
331
9800776436b9 allow dkim whitelisting to override uribl hosts in the mail body
Carl Byington <carl@five-ten-sg.com>
parents: 330
diff changeset
1689 else if (st == token_white) {
9800776436b9 allow dkim whitelisting to override uribl hosts in the mail body
Carl Byington <carl@five-ten-sg.com>
parents: 330
diff changeset
1690 whites.insert(rcpt);
9800776436b9 allow dkim whitelisting to override uribl hosts in the mail body
Carl Byington <carl@five-ten-sg.com>
parents: 330
diff changeset
1691 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1692 }
331
9800776436b9 allow dkim whitelisting to override uribl hosts in the mail body
Carl Byington <carl@five-ten-sg.com>
parents: 330
diff changeset
1693 bool rejecting = unknowns.empty() && whites.empty();
9800776436b9 allow dkim whitelisting to override uribl hosts in the mail body
Carl Byington <carl@five-ten-sg.com>
parents: 330
diff changeset
1694 if (!unknowns.empty()) {
9800776436b9 allow dkim whitelisting to override uribl hosts in the mail body
Carl Byington <carl@five-ten-sg.com>
parents: 330
diff changeset
1695 // 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
1696 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
1697 const char *found;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1698 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
1699 if (found) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1700 // uribl style
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1701 snprintf(buf, sizeof(buf), fmt, host, found);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1702 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1703 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1704 // dnsbl style
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1705 char adr[sizeof "255.255.255.255 "];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1706 adr[0] = '\0';
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1707 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
1708 snprintf(buf, sizeof(buf), fmt, host, adr);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1709 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1710 msg = string(buf);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1711 rejecting = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1712 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1713 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1714 if (!rejecting) {
354
2fd904f2efc2 only do greylisting if we don't have any whitelisted recipients
Carl Byington <carl@five-ten-sg.com>
parents: 352
diff changeset
1715 // only greylist if we don't have any whitelisted recipients
2fd904f2efc2 only do greylisting if we don't have any whitelisted recipients
Carl Byington <carl@five-ten-sg.com>
parents: 352
diff changeset
1716 if (priv.want_dccgrey && grey && !priv.have_whites && whites.empty()) {
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1717 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
1718 rc = SMFIS_TEMPFAIL;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1719 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1720 else rc = SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1721 }
331
9800776436b9 allow dkim whitelisting to override uribl hosts in the mail body
Carl Byington <carl@five-ten-sg.com>
parents: 330
diff changeset
1722 else if (!priv.have_whites && whites.empty()) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1723 // can reject the entire message
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1724 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
1725 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
1726 rc = SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1727 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1728 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1729 // 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
1730 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
1731 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
1732 smfi_delrcpt(ctx, (char*)rcpt);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1733 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1734 rc = SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1735 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1736 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1737 // reset for a new message on the same connection
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1738 mlfi_abort(ctx);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1739 return rc;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1740 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1741
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1742 sfsistat mlfi_abort(SMFICTX *ctx)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1743 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1744 mlfiPriv &priv = *MLFIPRIV;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1745 priv.reset();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1746 return SMFIS_CONTINUE;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1747 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1748
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1749 sfsistat mlfi_close(SMFICTX *ctx)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1750 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1751 mlfiPriv *priv = MLFIPRIV;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1752 if (!priv) return SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1753 delete priv;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1754 smfi_setpriv(ctx, NULL);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1755 return SMFIS_CONTINUE;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1756 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1757
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1758 struct smfiDesc smfilter =
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1759 {
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1760 (char*)"DNSBL", // filter name
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1761 SMFI_VERSION, // version code -- do not change
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1762 SMFIF_DELRCPT, // flags
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1763 mlfi_connect, // connection info filter
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1764 mlfi_helo, // SMTP HELO command filter
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1765 mlfi_envfrom, // envelope sender filter
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1766 mlfi_envrcpt, // envelope recipient filter
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1767 mlfi_header, // header filter
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1768 mlfi_eoh, // end of header
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1769 mlfi_body, // body block filter
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1770 mlfi_eom, // end of message
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1771 mlfi_abort, // message aborted
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1772 mlfi_close, // connection cleanup
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1773 };
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1774
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1775
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1776 ////////////////////////////////////////////////
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1777 // reload the config
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1778 //
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1779 CONFIG* new_conf();
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1780 CONFIG* new_conf() {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1781 CONFIG *newc = new CONFIG;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1782 pthread_mutex_lock(&config_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1783 newc->generation = generation++;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1784 pthread_mutex_unlock(&config_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1785 if (debug_syslog) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1786 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1787 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
1788 my_syslog(buf);
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carl
parents: 191
diff changeset
1789 }
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diff changeset
1790 if (load_conf(*newc, "dnsbl.conf")) {
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diff changeset
1791 newc->load_time = time(NULL);
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diff changeset
1792 return newc;
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parents: 191
diff changeset
1793 }
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diff changeset
1794 delete newc;
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diff changeset
1795 return NULL;
94
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carl
parents: 92
diff changeset
1796 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1797
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1798
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diff changeset
1799 ////////////////////////////////////////////////
192
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diff changeset
1800 // thread to watch the old config files for changes
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parents: 191
diff changeset
1801 // and reload when needed.
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diff changeset
1802 // we also clear the SMTP AUTH recipient counts hourly
94
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diff changeset
1803 //
163
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carl
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diff changeset
1804 extern "C" {void* config_loader(void *arg);}
94
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carl
parents: 92
diff changeset
1805 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
1806 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
1807 int loop2 = 0;
192
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diff changeset
1808 while (loader_run) {
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diff changeset
1809 sleep(180); // look for modifications every 3 minutes
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diff changeset
1810 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
1811 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
1812 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
1813 if (loop1 == 20) {
192
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diff changeset
1814 // three minutes thru each loop, 20 loops per hour
280
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Carl Byington <carl@five-ten-sg.com>
parents: 278
diff changeset
1815 // clear the recipient hourly counts and hourly sets of ip connection addresses
192
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diff changeset
1816 pthread_mutex_lock(&rate_mutex);
278
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parents: 272
diff changeset
1817 for (rates::iterator i=rcpt_hourly_counts.begin(); i!=rcpt_hourly_counts.end(); i++) {
192
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diff changeset
1818 (*i).second = 0;
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diff changeset
1819 }
278
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parents: 272
diff changeset
1820 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
1821 delete (*j).second;
280
2b77295fb9a7 add limits on unique ip addresses per hour per authenticated user
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parents: 278
diff changeset
1822 (*j).second = new int32_t_set;
278
368572c57013 add limits on unique ip addresses per hour per authenticated user
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parents: 272
diff changeset
1823 }
192
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diff changeset
1824 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
1825 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
1826 }
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
1827 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
1828 // 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
1829 // 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
1830 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
1831 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
1832 (*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
1833 }
278
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 272
diff changeset
1834 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
1835 delete (*j).second;
280
2b77295fb9a7 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 278
diff changeset
1836 (*j).second = new int32_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
1837 }
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
1838 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
1839 loop2 = 0;
192
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parents: 191
diff changeset
1840 }
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parents: 191
diff changeset
1841 CONFIG &dc = *config;
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parents: 191
diff changeset
1842 time_t then = dc.load_time;
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parents: 191
diff changeset
1843 struct stat st;
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parents: 191
diff changeset
1844 bool reload = false;
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parents: 191
diff changeset
1845 for (string_set::iterator i=dc.config_files.begin(); i!=dc.config_files.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
1846 const char *fn = *i;
192
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parents: 191
diff changeset
1847 if (stat(fn, &st)) reload = true; // file disappeared
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parents: 191
diff changeset
1848 else if (st.st_mtime > then) reload = true; // file modified
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parents: 191
diff changeset
1849 if (reload) break;
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carl
parents: 191
diff changeset
1850 }
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parents: 191
diff changeset
1851 if (reload) {
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parents: 191
diff changeset
1852 CONFIG *newc = new_conf();
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parents: 191
diff changeset
1853 if (newc) {
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carl
parents: 191
diff changeset
1854 // replace the global config pointer
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parents: 191
diff changeset
1855 pthread_mutex_lock(&config_mutex);
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parents: 191
diff changeset
1856 CONFIG *pc = config;
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diff changeset
1857 bool last = pc && (!pc->reference_count);
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parents: 191
diff changeset
1858 config = newc;
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diff changeset
1859 pthread_mutex_unlock(&config_mutex);
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diff changeset
1860 if (last) delete pc; // there were no references to this config
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carl
parents: 191
diff changeset
1861 }
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diff changeset
1862 else {
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parents: 191
diff changeset
1863 // failed to load new config
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parents: 191
diff changeset
1864 my_syslog("failed to load new configuration");
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carl
parents: 191
diff changeset
1865 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
1866 // update the load time on the current config to prevent complaining every 3 minutes
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carl
parents: 191
diff changeset
1867 dc.load_time = time(NULL);
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parents: 191
diff changeset
1868 }
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carl
parents: 191
diff changeset
1869 }
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carl
parents: 191
diff changeset
1870 }
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carl
parents: 191
diff changeset
1871 return NULL;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1872 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1873
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1874
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1875 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
1876 void usage(const char *prog)
94
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carl
parents: 92
diff changeset
1877 {
192
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carl
parents: 191
diff changeset
1878 fprintf(stderr, "Usage: %s [-d [level]] [-c] [-s] [-e from|to] [-b dccifd-addr] -r port -p sm-sock-addr [-t timeout]\n", prog);
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parents: 191
diff changeset
1879 fprintf(stderr, "where dccifd_addr is for the connection to dccifd\n");
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carl
parents: 191
diff changeset
1880 fprintf(stderr, " and should be local-domain-socket-file-name\n");
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carl
parents: 191
diff changeset
1881 fprintf(stderr, "where port is for the connection to our own dns resolver processes\n");
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carl
parents: 191
diff changeset
1882 fprintf(stderr, " and should be local-domain-socket-file-name\n");
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carl
parents: 191
diff changeset
1883 fprintf(stderr, "where sm-sock-addr is for the connection to sendmail\n");
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carl
parents: 191
diff changeset
1884 fprintf(stderr, " and should be one of\n");
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carl
parents: 191
diff changeset
1885 fprintf(stderr, " inet:port@ip-address\n");
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carl
parents: 191
diff changeset
1886 fprintf(stderr, " local:local-domain-socket-file-name\n");
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carl
parents: 191
diff changeset
1887 fprintf(stderr, "-c will load and dump the config to stdout\n");
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parents: 191
diff changeset
1888 fprintf(stderr, "-s will stress test the config loading code by repeating the load/free cycle\n");
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parents: 191
diff changeset
1889 fprintf(stderr, " in an infinte loop.\n");
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parents: 191
diff changeset
1890 fprintf(stderr, "-d will set the syslog message level, currently 0 to 3\n");
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parents: 191
diff changeset
1891 fprintf(stderr, "-e will print the results of looking up the from and to addresses in the\n");
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carl
parents: 191
diff changeset
1892 fprintf(stderr, " current config. The | character is used to separate the from and to\n");
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carl
parents: 191
diff changeset
1893 fprintf(stderr, " addresses in the argument to the -e switch\n");
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1894 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1895
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1896
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1897
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1898 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
1899 void setup_socket(const char *sock) {
192
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parents: 191
diff changeset
1900 unlink(sock);
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1901 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1902
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1903
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1904 /*
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carl
parents: 92
diff changeset
1905 * The signal handler function -- only gets called when a SIGCHLD
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1906 * is received, ie when a child terminates
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1907 */
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1908 void sig_chld(int signo)
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carl
parents: 92
diff changeset
1909 {
192
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parents: 191
diff changeset
1910 int status;
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carl
parents: 191
diff changeset
1911 /* Wait for any child without blocking */
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parents: 191
diff changeset
1912 while (waitpid(-1, &status, WNOHANG) > 0) {
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carl
parents: 191
diff changeset
1913 // ignore child exit status, we only do this to cleanup zombies
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parents: 191
diff changeset
1914 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1915 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1916
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1917
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1918 int main(int argc, char**argv)
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carl
parents: 92
diff changeset
1919 {
192
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parents: 191
diff changeset
1920 token_init();
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parents: 191
diff changeset
1921 bool check = false;
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parents: 191
diff changeset
1922 bool stress = false;
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parents: 191
diff changeset
1923 bool setconn = false;
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parents: 191
diff changeset
1924 bool setreso = false;
244
ef97c7cd4a6e const correctness fixes from new gcc, libresolv.a moved to glibc-static on newer distributions
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parents: 242
diff changeset
1925 char *email = NULL;
192
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parents: 191
diff changeset
1926 int c;
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carl
parents: 191
diff changeset
1927 const char *args = "b:r:p:t:e:d:chs";
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carl
parents: 191
diff changeset
1928 extern char *optarg;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1929
235
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1930 // 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
1931 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
1932 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
1933 exit(3);
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1934 }
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1935
246
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1936 // setup prvs coding detection
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1937 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
1938 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
1939 exit(3);
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1940 }
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1941
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
1942 // 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
1943 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
1944 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
1945 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
1946 }
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
1947
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
1948 // 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
1949 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
1950 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
1951 exit(3);
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1952 }
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1953
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1954 // 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
1955 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
1956 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
1957 exit(3);
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1958 }
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1959
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1960 // Process command line options
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1961 while ((c = getopt(argc, argv, args)) != -1) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1962 switch (c) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1963 case 'b':
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1964 if (optarg == NULL || *optarg == '\0') {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1965 fprintf(stderr, "Illegal dccifd socket: %s\n", optarg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1966 exit(EX_USAGE);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1967 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1968 dccifd_port = strdup(optarg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1969 break;
177
a4d313c2460b start embedded dcc filtering
carl
parents: 174
diff changeset
1970
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1971 case 'r':
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1972 if (optarg == NULL || *optarg == '\0') {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1973 fprintf(stderr, "Illegal resolver socket: %s\n", optarg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1974 exit(EX_USAGE);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1975 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1976 resolver_port = strdup(optarg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1977 setup_socket(resolver_port);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1978 setreso = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1979 break;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1980
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1981 case 'p':
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1982 if (optarg == NULL || *optarg == '\0') {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1983 fprintf(stderr, "Illegal sendmail socket: %s\n", optarg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1984 exit(EX_USAGE);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1985 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1986 if (smfi_setconn(optarg) == MI_FAILURE) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1987 fprintf(stderr, "smfi_setconn failed\n");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1988 exit(EX_SOFTWARE);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1989 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1990 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
1991 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
1992 setconn = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1993 break;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1994
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1995 case 't':
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1996 if (optarg == NULL || *optarg == '\0') {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1997 fprintf(stderr, "Illegal timeout: %s\n", optarg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1998 exit(EX_USAGE);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1999 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2000 if (smfi_settimeout(atoi(optarg)) == MI_FAILURE) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2001 fprintf(stderr, "smfi_settimeout failed\n");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2002 exit(EX_SOFTWARE);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2003 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2004 break;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2005
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2006 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
2007 if (email) free((void*)email);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2008 email = strdup(optarg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2009 break;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2010
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2011 case 'c':
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2012 check = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2013 break;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2014
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2015 case 's':
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2016 stress = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2017 break;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2018
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2019 case 'd':
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2020 if (optarg == NULL || *optarg == '\0') debug_syslog = 1;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2021 else debug_syslog = atoi(optarg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2022 break;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2023
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2024 case 'h':
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2025 default:
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2026 usage(argv[0]);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2027 exit(EX_USAGE);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2028 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2029 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2030
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2031 if (check) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2032 use_syslog = false;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2033 debug_syslog = 10;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2034 CONFIG *conf = new_conf();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2035 if (conf) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2036 conf->dump();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2037 delete conf;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2038 clear_strings(); // for valgrind checking
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2039 return 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2040 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2041 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2042 return 1; // config failed to load
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2043 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2044 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2045
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2046 if (stress) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2047 fprintf(stdout, "stress testing\n");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2048 while (1) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2049 for (int i=0; i<10; i++) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2050 CONFIG *conf = new_conf();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2051 if (conf) delete conf;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2052 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2053 fprintf(stdout, ".");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2054 fflush(stdout);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2055 sleep(1);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2056 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2057 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2058
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2059 if (email) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2060 char *x = strchr(email, '|');
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2061 if (x) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2062 *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
2063 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
2064 const char *to = to_lower_string(x+1);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2065 use_syslog = false;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2066 CONFIG *conf = new_conf();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2067 if (conf) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2068 CONTEXTP con = conf->find_context(to);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2069 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2070 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
2071 CONTEXTP fc = con->find_context(from);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2072 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
2073 const char *st = fc->find_from(from);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2074 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
2075 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
2076 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
2077 delete conf;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2078 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2079 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2080 return 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2081 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2082
192
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carl
parents: 191
diff changeset
2083 if (!setconn) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2084 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
2085 usage(argv[0]);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2086 exit(EX_USAGE);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2087 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2088
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2089 if (!setreso) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2090 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
2091 usage(argv[0]);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2092 exit(EX_USAGE);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2093 }
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 if (smfi_register(smfilter) == MI_FAILURE) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2096 fprintf(stderr, "smfi_register failed\n");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2097 exit(EX_UNAVAILABLE);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2098 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2099
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2100 // switch to background mode
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2101 if (daemon(1,0) < 0) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2102 fprintf(stderr, "daemon() call failed\n");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2103 exit(EX_UNAVAILABLE);
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carl
parents: 191
diff changeset
2104 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2105
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2106 // write the pid
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carl
parents: 191
diff changeset
2107 const char *pidpath = "/var/run/dnsbl.pid";
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carl
parents: 191
diff changeset
2108 unlink(pidpath);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2109 FILE *f = fopen(pidpath, "w");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2110 if (f) {
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2111 #ifdef linux
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2112 // from a comment in the DCC source code:
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2113 // Linux threads are broken. Signals given the
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2114 // original process are delivered to only the
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2115 // thread that happens to have that PID. The
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2116 // sendmail libmilter thread that needs to hear
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2117 // SIGINT and other signals does not, and that breaks
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2118 // scripts that need to stop milters.
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carl
parents: 191
diff changeset
2119 // However, signaling the process group works.
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carl
parents: 191
diff changeset
2120 fprintf(f, "-%d\n", (u_int)getpgrp());
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2121 #else
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2122 fprintf(f, "%d\n", (u_int)getpid());
94
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carl
parents: 92
diff changeset
2123 #endif
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2124 fclose(f);
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carl
parents: 191
diff changeset
2125 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2126
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2127 // initialize the thread sync objects
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2128 pthread_mutex_init(&config_mutex, 0);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2129 pthread_mutex_init(&syslog_mutex, 0);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2130 pthread_mutex_init(&resolve_mutex, 0);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2131 pthread_mutex_init(&fd_pool_mutex, 0);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2132 pthread_mutex_init(&verifier_mutex, 0);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2133 pthread_mutex_init(&whitelister_mutex, 0);
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2134
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2135 // drop root privs
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2136 struct passwd *pw = getpwnam("dnsbl");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2137 if (pw) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2138 if (setgid(pw->pw_gid) == -1) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2139 my_syslog("failed to switch to group dnsbl");
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 if (setuid(pw->pw_uid) == -1) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2142 my_syslog("failed to switch to user dnsbl");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2143 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2144 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2145
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2146 // load the initial config
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2147 config = new_conf();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2148 if (!config) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2149 my_syslog("failed to load initial configuration, quitting");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2150 exit(1);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2151 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2152
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2153 // fork off the resolver listener process
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2154 pid_t child = fork();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2155 if (child < 0) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2156 my_syslog("failed to create resolver listener process");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2157 exit(0);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2158 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2159 if (child == 0) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2160 // we are the child - dns resolver listener process
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carl
parents: 191
diff changeset
2161 resolver_socket = socket(AF_UNIX, SOCK_STREAM, 0);
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carl
parents: 191
diff changeset
2162 if (resolver_socket < 0) {
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carl
parents: 191
diff changeset
2163 my_syslog("child failed to create resolver socket");
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carl
parents: 191
diff changeset
2164 exit(0); // failed
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2165 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2166 sockaddr_un server;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2167 memset(&server, '\0', sizeof(server));
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carl
parents: 191
diff changeset
2168 server.sun_family = AF_UNIX;
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carl
parents: 191
diff changeset
2169 strncpy(server.sun_path, resolver_port, sizeof(server.sun_path)-1);
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carl
parents: 191
diff changeset
2170 //try to bind the address to the socket.
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carl
parents: 191
diff changeset
2171 if (bind(resolver_socket, (sockaddr *)&server, sizeof(server)) < 0) {
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carl
parents: 191
diff changeset
2172 // bind failed
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carl
parents: 191
diff changeset
2173 shutdown(resolver_socket, SHUT_RDWR);
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carl
parents: 191
diff changeset
2174 close(resolver_socket);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2175 my_syslog("child failed to bind resolver socket");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2176 exit(0); // failed
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2177 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2178 //listen on the socket.
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2179 if (listen(resolver_socket, 10) < 0) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2180 // listen failed
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carl
parents: 191
diff changeset
2181 shutdown(resolver_socket, SHUT_RDWR);
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carl
parents: 191
diff changeset
2182 close(resolver_socket);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2183 my_syslog("child failed to listen to resolver socket");
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carl
parents: 191
diff changeset
2184 exit(0); // failed
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carl
parents: 191
diff changeset
2185 }
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carl
parents: 191
diff changeset
2186 // setup sigchld handler to prevent zombies
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carl
parents: 191
diff changeset
2187 struct sigaction act;
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carl
parents: 191
diff changeset
2188 act.sa_handler = sig_chld; // Assign sig_chld as our SIGCHLD handler
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carl
parents: 191
diff changeset
2189 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
2190 act.sa_flags = SA_NOCLDSTOP; // only want children that have terminated
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carl
parents: 191
diff changeset
2191 if (sigaction(SIGCHLD, &act, NULL) < 0) {
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carl
parents: 191
diff changeset
2192 my_syslog("child failed to setup SIGCHLD handler");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2193 exit(0); // failed
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carl
parents: 191
diff changeset
2194 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2195 while (true) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2196 sockaddr_un client;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2197 socklen_t clientlen = sizeof(client);
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carl
parents: 191
diff changeset
2198 int s = accept(resolver_socket, (sockaddr *)&client, &clientlen);
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carl
parents: 191
diff changeset
2199 if (s > 0) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2200 // accept worked, it did not get cancelled before we could accept it
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carl
parents: 191
diff changeset
2201 // fork off a process to handle this connection
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carl
parents: 191
diff changeset
2202 int newchild = fork();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2203 if (newchild == 0) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2204 // this is the worker process
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carl
parents: 191
diff changeset
2205 // child does not need the listening socket
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carl
parents: 191
diff changeset
2206 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
2207 #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
2208 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
2209 _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
2210 _res.retrans = RES_TIMEOUT;
495cfe5caead try to allow mixed -lresolv and libresolv.a for ns_parserr
Carl Byington <carl@five-ten-sg.com>
parents: 216
diff changeset
2211 #endif
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2212 process_resolver_requests(s);
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carl
parents: 191
diff changeset
2213 exit(0);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2214 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2215 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2216 // this is the parent
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carl
parents: 191
diff changeset
2217 // parent does not need the accepted socket
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carl
parents: 191
diff changeset
2218 close(s);
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carl
parents: 191
diff changeset
2219 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2220 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2221 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2222 exit(0); // make sure we don't fall thru.
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2223 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2224 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2225 sleep(2); // allow child to get started
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2226 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
2227
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2228 // only create threads after the fork() in daemon
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2229 pthread_t tid;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2230 if (pthread_create(&tid, 0, config_loader, 0))
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2231 my_syslog("failed to create config loader thread");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2232 if (pthread_detach(tid))
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2233 my_syslog("failed to detach config loader thread");
153
8d7c439bb6fa add auto whitelisting
carl
parents: 152
diff changeset
2234
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
2235 if (pthread_create(&tid, 0, verify_closer, 0))
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2236 my_syslog("failed to create verify closer thread");
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2237 if (pthread_detach(tid))
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2238 my_syslog("failed to detach verify closer thread");
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2239
192
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2240 if (pthread_create(&tid, 0, whitelister_writer, 0))
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2241 my_syslog("failed to create autowhite writer thread");
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2242 if (pthread_detach(tid))
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2243 my_syslog("failed to detach autowhite writer thread");
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2244
192
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2245 time_t starting = time(NULL);
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2246 int rc = smfi_main();
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2247 if ((rc != MI_SUCCESS) && (time(NULL) > starting+5*60)) {
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2248 my_syslog("trying to restart after smfi_main()");
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2249 loader_run = false; // eventually the config loader thread will terminate
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2250 execvp(argv[0], argv);
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2251 }
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2252 exit((rc == MI_SUCCESS) ? 0 : EX_UNAVAILABLE);
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2253 }