annotate src/dnsbl.cpp @ 259:be939802c64e

add recipient rate limits by email from address or domain
author Carl Byington <carl@five-ten-sg.com>
date Sat, 21 Jul 2012 08:34:04 -0700
parents d11b529ce9c5
children e118fd2c6af0
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1 /*
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2
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3 Copyright (c) 2009 Carl Byington - 510 Software Group, released under
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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
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102 pthread_mutex_t config_mutex;
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103 pthread_mutex_t syslog_mutex;
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104 pthread_mutex_t resolve_mutex;
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105 pthread_mutex_t fd_pool_mutex;
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106 pthread_mutex_t rate_mutex;
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107
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108 std::set<int> fd_pool;
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109 int NULL_SOCKET = -1;
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110 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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111 const char *resolver_port = NULL; // unix domain socket to talk to the dns resolver process
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112 int resolver_socket = NULL_SOCKET; // socket used to listen for resolver requests
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113 const char *dccifd_port = NULL; // unix domain socket to talk to the dcc interface daemon
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114 time_t last_error_time = 0;
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115 int resolver_sock_count = 0; // protected with fd_pool_mutex
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116 int resolver_pool_size = 0; // protected with fd_pool_mutex
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117 rcpt_rates rcpt_hourly_counts; // protected with rate_mutex
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118 rcpt_rates rcpt_daily_counts; // protected with rate_mutex
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120
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121 struct ns_map {
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122 // all the strings are owned by the keys/values in the ns_host string map
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123 string_map ns_host; // nameserver name -> host name that uses this name server
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124 ns_mapper ns_ip; // nameserver name -> ipv4 address of the name server
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125 ~ns_map();
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126 void add(const char *name, const char *refer);
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127 };
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128
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129
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130 ns_map::~ns_map() {
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131 for (string_map::iterator i=ns_host.begin(); i!=ns_host.end(); i++) {
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132 const char *x = (*i).first;
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133 const char *y = (*i).second;
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134 free((void*)x);
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135 free((void*)y);
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136 }
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137 ns_ip.clear();
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138 ns_host.clear();
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139 }
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141
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142 void ns_map::add(const char *name, const char *refer) {
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143 string_map::iterator i = ns_host.find(name);
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144 if (i != ns_host.end()) return;
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145 char *x = strdup(name);
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146 char *y = strdup(refer);
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147 ns_ip[x] = 0;
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148 ns_host[x] = y;
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149
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150 }
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151
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152 // packed structure to allow a single socket write to dump the
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153 // length and the following answer. The packing attribute is gcc specific.
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154 struct glommer {
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155 size_t length;
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156 #ifdef NS_PACKETSZ
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157 u_char answer[NS_PACKETSZ*4]; // with a resolver, we return resolver answers
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158 #else
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159 uint32_t answer; // without a resolver, we return a single ipv4 address in network byte order, 0 == no answer
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160 #endif
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161 } __attribute__ ((packed));
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162
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163
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164 ////////////////////////////////////////////////
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165 // helper to manipulate recipient counts
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166 //
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167 void incr_rcpt_count(const char *user, int &hourly, int &daily);
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168 void incr_rcpt_count(const char *user, int &hourly, int &daily) {
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169 pthread_mutex_lock(&rate_mutex);
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170 rcpt_rates::iterator i = rcpt_hourly_counts.find(user);
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171 hourly = 1;
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172 if (i == rcpt_hourly_counts.end()) {
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173 user = strdup(user);
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174 rcpt_hourly_counts[user] = hourly;
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175 }
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176 else {
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177 hourly = ++((*i).second);
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178 }
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179
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180 rcpt_rates::iterator j = rcpt_daily_counts.find(user);
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181 daily = 1;
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182 if (j == rcpt_daily_counts.end()) {
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183 user = strdup(user);
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184 rcpt_daily_counts[user] = daily;
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185 }
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186 else {
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187 daily = ++((*j).second);
192
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188 }
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189 pthread_mutex_unlock(&rate_mutex);
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190 }
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191
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192 ////////////////////////////////////////////////
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193 // helper to discard the strings held by a context_map
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194 //
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195 void discard(context_map &cm);
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196 void discard(context_map &cm) {
192
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197 for (context_map::iterator i=cm.begin(); i!=cm.end(); i++) {
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198 const char *x = (*i).first;
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199 free((void*)x);
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200 }
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201 cm.clear();
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202 }
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203
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204
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205 ////////////////////////////////////////////////
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206 // helper to register a string in a context_map
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207 //
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208 void register_string(context_map &cm, const char *name, CONTEXT *con);
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209 void register_string(context_map &cm, const char *name, CONTEXT *con) {
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210 context_map::iterator i = cm.find(name);
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211 if (i != cm.end()) return;
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212 char *x = strdup(name);
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213 cm[x] = con;
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214 }
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215
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216
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217 ////////////////////////////////////////////////
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218 // disconnect the fd from the dns resolver process
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219 //
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220 void my_disconnect(int sock, bool decrement = true);
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221 void my_disconnect(int sock, bool decrement) {
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222 if (sock != NULL_SOCKET) {
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223 if (decrement) {
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224 pthread_mutex_lock(&fd_pool_mutex);
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225 resolver_sock_count--;
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226 pthread_mutex_unlock(&fd_pool_mutex);
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227 }
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228 shutdown(sock, SHUT_RDWR);
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229 close(sock);
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230 }
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231 }
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232
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233
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234 ////////////////////////////////////////////////
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235 // return fd connected to the dns resolver process
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236 //
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237 int my_connect();
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238 int my_connect() {
192
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239 // if we have had recent errors, don't even try to open the socket
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240 if ((time(NULL) - last_error_time) < ERROR_SOCKET_TIME) return NULL_SOCKET;
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241
192
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242 // nothing recent, maybe this time it will work
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243 int sock = NULL_SOCKET;
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244 sockaddr_un server;
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245 memset(&server, '\0', sizeof(server));
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246 server.sun_family = AF_UNIX;
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247 strncpy(server.sun_path, resolver_port, sizeof(server.sun_path)-1);
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248 sock = socket(AF_UNIX, SOCK_STREAM, 0);
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249 if (sock != NULL_SOCKET) {
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250 bool rc = (connect(sock, (sockaddr *)&server, sizeof(server)) == 0);
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251 if (!rc) {
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252 my_disconnect(sock, false);
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253 sock = NULL_SOCKET;
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254 last_error_time = time(NULL);
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255 }
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256 }
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257 else last_error_time = time(NULL);
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258 if (sock != NULL_SOCKET) {
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259 pthread_mutex_lock(&fd_pool_mutex);
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260 resolver_sock_count++;
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261 pthread_mutex_unlock(&fd_pool_mutex);
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262 }
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263 return sock;
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264 }
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265
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266
236
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267 ////////////////////////////////////////////////
252
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268 // ask a dns question and get an A record answer in network byte order
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269 // we don't try very hard, just using the default resolver retry settings.
236
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270 // If we cannot get an answer, we just accept the mail.
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271 //
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272 //
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273 uint32_t dns_interface(mlfiPriv &priv, const char *question, bool maybe_ip, ns_map *nameservers);
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274 uint32_t dns_interface(mlfiPriv &priv, const char *question, bool maybe_ip, ns_map *nameservers) {
236
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275 // tell sendmail we are still working
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276 #if _FFR_SMFI_PROGRESS
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277 if (priv.eom) smfi_progress(priv.ctx);
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278 #endif
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279
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280 // this part can be done without locking the resolver mutex. Each
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281 // milter thread is talking over its own socket to a separate resolver
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282 // process, which does the actual dns resolution.
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283 if (priv.err) return 0; // cannot ask more questions on this socket.
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284 if (maybe_ip) {
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285 // might be a bare ip address, try this first to avoid dns lookups that may not be needed
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286 in_addr ip;
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287 if (inet_aton(question, &ip)) {
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288 return ip.s_addr;
236
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289 }
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290 }
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291 int n = strlen(question);
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292 if (question[n-1] == '.') {
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293 priv.my_write(question, n+1); // write the question including the null terminator
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294 }
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295 else {
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296 priv.my_write(question, n); // write the question
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297 priv.my_write(".", 2); // and the fully qualified . terminator and null string terminator
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298 }
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299 glommer glom;
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300 char *buf = (char *)&glom;
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301 priv.my_read(buf, sizeof(glom.length));
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diff changeset
302 buf += sizeof(glom.length);
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303 #ifdef RESOLVER_DEBUG
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304 char text[1000];
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305 snprintf(text, sizeof(text), "dns_interface() wrote question %s and has answer length %d", question, glom.length);
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306 my_syslog(text);
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307 #endif
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308 if (glom.length == 0) return 0;
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309 if (glom.length > sizeof(glom.answer)) {
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310 priv.err = true;
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311 return 0; // cannot process overlarge answers
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312 }
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313 priv.my_read(buf, glom.length);
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314
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315 #ifdef NS_PACKETSZ
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316 // now we need to lock the resolver mutex to keep the milter threads from
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317 // stepping on each other while parsing the dns answer.
252
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318 uint32_t ret_address = 0;
236
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319 pthread_mutex_lock(&resolve_mutex);
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320 // parse the answer
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321 ns_msg handle;
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322 ns_rr rr;
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323 if (ns_initparse(glom.answer, glom.length, &handle) == 0) {
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324 // look for ns names
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325 if (nameservers) {
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326 ns_map &ns = *nameservers;
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327 int rrnum = 0;
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328 while (ns_parserr(&handle, ns_s_ns, rrnum++, &rr) == 0) {
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329 if (ns_rr_type(rr) == ns_t_ns) {
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330 char nam[NS_MAXDNAME+1];
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331 char *n = nam;
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332 const u_char *p = ns_rr_rdata(rr);
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333 while (((n-nam) < NS_MAXDNAME) && ((size_t)(p-glom.answer) < glom.length) && *p) {
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334 size_t s = *(p++);
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335 if (s > 191) {
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336 // compression pointer
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337 s = (s-192)*256 + *(p++);
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338 if (s >= glom.length) break; // pointer outside bounds of answer
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339 p = glom.answer + s;
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340 s = *(p++);
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341 }
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342 if (s > 0) {
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343 if ((size_t)(n-nam) >= (NS_MAXDNAME-s)) break; // destination would overflow name buffer
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344 if ((size_t)(p-glom.answer) >= (glom.length-s)) break; // source outside bounds of answer
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345 memcpy(n, p, s);
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346 n += s;
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347 p += s;
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348 *(n++) = '.';
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349 }
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350 }
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351 if (n-nam) n--; // remove trailing .
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352 *n = '\0'; // null terminate it
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353 ns.add(nam, question); // ns host to lookup later
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354 }
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355 }
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356 rrnum = 0;
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357 while (ns_parserr(&handle, ns_s_ar, rrnum++, &rr) == 0) {
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358 if (ns_rr_type(rr) == ns_t_a) {
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359 char* nam = (char*)ns_rr_name(rr);
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360 ns_mapper::iterator i = ns.ns_ip.find(nam);
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361 if (i != ns.ns_ip.end()) {
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diff changeset
362 // we want this ip address
252
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363 uint32_t address;
236
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364 memcpy(&address, ns_rr_rdata(rr), sizeof(address));
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365 ns.ns_ip[nam] = address;
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366 }
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diff changeset
367 }
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diff changeset
368 }
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diff changeset
369 }
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370 int rrnum = 0;
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371 while (ns_parserr(&handle, ns_s_an, rrnum++, &rr) == 0) {
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diff changeset
372 if (ns_rr_type(rr) == ns_t_a) {
252
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diff changeset
373 uint32_t address;
236
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374 memcpy(&address, ns_rr_rdata(rr), sizeof(address));
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375 ret_address = address;
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376 }
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diff changeset
377 }
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diff changeset
378 }
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diff changeset
379 pthread_mutex_unlock(&resolve_mutex);
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diff changeset
380 #ifdef RESOLVER_DEBUG
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diff changeset
381 snprintf(text, sizeof(text), "dns_interface() found ip %d", ret_address);
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diff changeset
382 my_syslog(text);
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diff changeset
383 #endif
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diff changeset
384 return ret_address;
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diff changeset
385 #else
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diff changeset
386 return glom.answer;
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diff changeset
387 #endif
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diff changeset
388 }
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diff changeset
389
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diff changeset
390
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diff changeset
391 ////////////////////////////////////////////////
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diff changeset
392 // lookup the domain name part of a hostname on the uribl
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diff changeset
393 //
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diff changeset
394 // if we find part of the hostname on the uribl, return
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diff changeset
395 // true and point found to the part of the hostname that we found
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diff changeset
396 // as a string registered in hosts.
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diff changeset
397 // otherwise, return false and preserve the value of found.
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diff changeset
398 //
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diff changeset
399 bool uriblookup(mlfiPriv &priv, string_set &hosts, const char *hostname, const char *top, const char *&found) ;
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diff changeset
400 bool uriblookup(mlfiPriv &priv, string_set &hosts, const char *hostname, const char *top, const char *&found) {
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diff changeset
401 // top is pointer to '.' char at end of base domain, or null for ip address form
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diff changeset
402 // so for hostname of www.fred.mydomain.co.uk
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diff changeset
403 // top points to-----------------------^
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diff changeset
404 // and we end up looking at only mydomain.co.uk, ignoring the www.fred stuff
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
405 char buf[maxlen];
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
406 if (top) {
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
407 // add one more component
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
408 const char *x = (const char *)memrchr(hostname, '.', top-hostname);
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
409 if (x) hostname = x+1;
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
410 }
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
411 snprintf(buf, sizeof(buf), "%s.%s.", hostname, priv.uribl_suffix);
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
412 if (dns_interface(priv, buf, false, NULL)) {
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
413 if (debug_syslog > 2) {
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
414 char tmp[maxlen];
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
415 snprintf(tmp, sizeof(tmp), "found %s on %s", hostname, priv.uribl_suffix);
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
416 my_syslog(tmp);
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
417 }
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
418 found = register_string(hosts, hostname);
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
419 return true;
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
420 }
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
421 return false;
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
422 }
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
423
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
424
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
425 ////////////////////////////////////////////////
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
426 // uribl checker
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
427 // -------------
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
428 // hostname MUST not have a trailing dot
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
429 // If tld, two level lookup.
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
430 // Else, look up three level domain.
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
431 //
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
432 // if we find part of the hostname on the uribl, return
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
433 // true and point found to the part of the hostname that we found
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
434 // as a string registered in hosts.
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
435 // otherwise, return false and preserve the value of found.
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
436 //
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
437 bool check_uribl(mlfiPriv &priv, string_set &hosts, const char *hostname, const char *&found) ;
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
438 bool check_uribl(mlfiPriv &priv, string_set &hosts, const char *hostname, const char *&found) {
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
439 in_addr ip;
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
440 if (inet_aton(hostname, &ip)) {
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
441 const u_char *src = (const u_char *)&ip.s_addr;
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
442 if (src[0] == 127) return false; // don't do dns lookups on localhost
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
443 if (src[0] == 10) return false; // don't do dns lookups on rfc1918 space
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
444 if ((src[0] == 192) && (src[1] == 168)) return false;
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
445 if ((src[0] == 172) && (16 <= src[1]) && (src[1] <= 31)) return false;
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
446 char adr[sizeof "255.255.255.255 "];
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
447 snprintf(adr, sizeof(adr), "%u.%u.%u.%u", src[3], src[2], src[1], src[0]);
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
448 // cannot use inet_ntop here since we want the octets reversed.
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
449 return (uriblookup(priv, hosts, adr, NULL, found));
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
450 }
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
451
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
452 const char *top, *top2, *top3;
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
453 top = strrchr(hostname, '.');
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
454 if (top) {
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
455 top2 = (const char *)memrchr(hostname, '.', top-hostname);
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
456
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
457 if (top2) {
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
458 string_set::iterator i = priv.memory->get_cctlds()->find(top2+1);
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
459 string_set::iterator x = priv.memory->get_cctlds()->end();
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
460 // if we have a 2-level-cctld, just look at top three levels of the name
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
461 if (i != x) return uriblookup(priv, hosts, hostname, top2, found);
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
462
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
463 // if we have more than 3 levels in the name, look at the top three levels of the name
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
464 top3 = (const char *)memrchr(hostname, '.', top2-hostname);
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
465 if (top3 && uriblookup(priv, hosts, hostname, top2, found)) return true;
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
466
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
467 // if that was not found, fall thru to looking at the top two levels
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
468 }
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
469 // look at the top two levels of the name
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
470 return uriblookup(priv, hosts, hostname, top, found);
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
471 }
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
472 return false;
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
473 }
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
474
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
475
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
476 mlfiPriv::mlfiPriv() {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
477 pthread_mutex_lock(&config_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
478 pc = config;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
479 pc->reference_count++;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
480 pthread_mutex_unlock(&config_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
481 get_fd();
230
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
482 ctx = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
483 eom = false;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
484 ip = 0;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
485 helo = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
486 mailaddr = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
487 queueid = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
488 authenticated = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
489 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
490 client_dns_name = NULL;
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
491 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
492 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
493 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
494 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
495 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
496 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
497 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
498 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
499 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
500 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
501 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
502 memory = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
503 scanner = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
504 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
505 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
506 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
507 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
508 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
509 assassin = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
510 dccifd = NULL;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
511 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
512
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
513 mlfiPriv::~mlfiPriv() {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
514 return_fd();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
515 pthread_mutex_lock(&config_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
516 pc->reference_count--;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
517 bool last = (!pc->reference_count) && (pc != config);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
518 pthread_mutex_unlock(&config_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
519 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
520 if (helo) free((void*)helo);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
521 reset(true);
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
522 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
523
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
524 void mlfiPriv::reset(bool final) {
194
688ec12a3c0c delay autowhitelisting to avoid out of office reply bots
carl
parents: 193
diff changeset
525 while (!delayer.empty()) {
231
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
526 DELAYWHITEP dwp = delayer.front();
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
527 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
528 if (loto) free((void*)loto);
193
3ea79ef741a0 delay autowhitelisting to avoid out of office reply bots
carl
parents: 192
diff changeset
529 delete dwp;
3ea79ef741a0 delay autowhitelisting to avoid out of office reply bots
carl
parents: 192
diff changeset
530 delayer.pop_front();
3ea79ef741a0 delay autowhitelisting to avoid out of office reply bots
carl
parents: 192
diff changeset
531 }
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
532 if (mailaddr) free((void*)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
533 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
534 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
535 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
536 if (client_dns_name) free((void*)client_dns_name);
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
537 discard(hosts_uribl);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
538 delayer.clear();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
539 discard(env_to);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
540 if (memory) delete memory;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
541 if (scanner) delete scanner;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
542 if (assassin) delete assassin;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
543 if (dccifd) delete dccifd;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
544 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
545 ctx = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
546 eom = false;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
547 mailaddr = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
548 queueid = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
549 authenticated = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
550 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
551 client_dns_name = NULL;
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
552 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
553 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
554 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
555 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
556 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
557 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
558 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
559 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
560 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
561 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
562 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
563 memory = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
564 scanner = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
565 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
566 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
567 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
568 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
569 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
570 assassin = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
571 dccifd = NULL;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
572 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
573 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
574
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
575 void mlfiPriv::get_fd() {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
576 err = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
577 fd = NULL_SOCKET;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
578 int result = pthread_mutex_lock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
579 if (!result) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
580 std::set<int>::iterator i;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
581 i = fd_pool.begin();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
582 if (i != fd_pool.end()) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
583 // have at least one fd in the pool
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
584 err = false;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
585 fd = *i;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
586 fd_pool.erase(fd);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
587 resolver_pool_size--;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
588 pthread_mutex_unlock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
589 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
590 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
591 // pool is empty, get a new fd
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
592 pthread_mutex_unlock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
593 fd = my_connect();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
594 err = (fd == NULL_SOCKET);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
595 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
596 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
597 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
598 // cannot lock the pool, just get a new fd
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
599 fd = my_connect();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
600 err = (fd == NULL_SOCKET);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
601 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
602 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
603
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
604 void mlfiPriv::return_fd() {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
605 if (err) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
606 // 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
607 my_disconnect(fd);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
608 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
609 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
610 int result = pthread_mutex_lock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
611 if (!result) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
612 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
613 // return the fd to the pool
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
614 fd_pool.insert(fd);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
615 resolver_pool_size++;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
616 pthread_mutex_unlock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
617 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
618 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
619 // 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
620 // 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
621 pthread_mutex_unlock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
622 my_disconnect(fd);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
623 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
624 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
625 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
626 // 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
627 my_disconnect(fd);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
628 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
629 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
630 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
631
177
a4d313c2460b start embedded dcc filtering
carl
parents: 174
diff changeset
632 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
633 if (err) return 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
634 size_t rs = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
635 while (len) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
636 size_t ws = write(fd, buf, len);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
637 if (ws > 0) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
638 rs += ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
639 len -= ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
640 buf += ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
641 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
642 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
643 // peer closed the socket!
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
644 rs = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
645 err = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
646 break;
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 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
649 return rs;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
650 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
651
177
a4d313c2460b start embedded dcc filtering
carl
parents: 174
diff changeset
652 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
653 if (err) return 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
654 size_t rs = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
655 while (len) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
656 size_t ws = read(fd, buf, len);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
657 if (ws > 0) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
658 rs += ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
659 len -= ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
660 buf += ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
661 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
662 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
663 // peer closed the socket!
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
664 rs = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
665 err = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
666 break;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
667 }
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 return rs;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
670 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
671
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
672 void mlfiPriv::need_content_filter(const char *rcpt, CONTEXT &con) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
673 if (!memory) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
674 // first recipient that needs content filtering sets
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
675 // some of the content filtering parameters
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
676 memory = new recorder(this, con.get_html_tags(), con.get_content_tlds(), con.get_content_cctlds());
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
677 scanner = new url_scanner(memory);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
678 content_suffix = con.get_content_suffix();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
679 content_message = con.get_content_message();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
680 uribl_suffix = con.get_uribl_suffix();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
681 uribl_message = con.get_uribl_message();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
682 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
683 // 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
684 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
685 if (helo) {
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
686 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
687 }
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
688 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
689 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
690 }
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
691 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
692 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
693 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
694 }
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
695 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
696 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
697 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
698
186
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
699
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
700 mlfiPriv* fetch_priv_from_ctx(SMFICTX *ctx);
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
701 mlfiPriv* fetch_priv_from_ctx(SMFICTX *ctx)
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
702 {
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
703 mlfiPriv *priv = (struct mlfiPriv *)smfi_getpriv(ctx);
187
f0eda59e8afd fix null pointer dereference from missing HELO command
carl
parents: 186
diff changeset
704 priv->ctx = ctx;
186
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
705 return priv;
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
706 }
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
707 #define MLFIPRIV fetch_priv_from_ctx(ctx)
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
708
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
709
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
710
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
711 ////////////////////////////////////////////////
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
712 // syslog a message
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
713 //
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
714 void my_syslog(mlfiPriv *priv, const char *text) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
715 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
716 if (priv) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
717 snprintf(buf, sizeof(buf), "%s: %s", priv->queueid, text);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
718 text = buf;
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 if (use_syslog) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
721 pthread_mutex_lock(&syslog_mutex);
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carl
parents: 191
diff changeset
722 if (!syslog_opened) {
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carl
parents: 191
diff changeset
723 openlog("dnsbl", LOG_PID, LOG_MAIL);
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carl
parents: 191
diff changeset
724 syslog_opened = true;
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carl
parents: 191
diff changeset
725 }
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carl
parents: 191
diff changeset
726 syslog(LOG_NOTICE, "%s", text);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
727 pthread_mutex_unlock(&syslog_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
728 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
729 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
730 printf("%s \n", text);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
731 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
732 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
733
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
734 void my_syslog(mlfiPriv *priv, const string text) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
735 if (debug_syslog > 3) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
736 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
737 strncpy(buf, text.c_str(), sizeof(buf));
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
738 buf[maxlen-1] = '\0'; // ensure null termination
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
739 my_syslog(priv, buf);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
740 }
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
741 }
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
742
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
743 void my_syslog(const char *text) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
744 my_syslog(NULL, text);
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
745 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
746
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
747
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
748 ////////////////////////////////////////////////
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
749 // 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
750 // write the result back to the socket.
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
751
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
752 void process_resolver_requests(int socket);
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
753 void process_resolver_requests(int socket) {
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
754 #ifdef NS_MAXDNAME
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
755 char question[NS_MAXDNAME];
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
756 #else
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
757 char question[1000];
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
758 #endif
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
759 glommer glom;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
760
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
761 int maxq = sizeof(question);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
762 while (true) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
763 // read a question
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
764 int rs = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
765 while (rs < maxq) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
766 int ns = read(socket, question+rs, maxq-rs);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
767 if (ns > 0) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
768 rs += ns;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
769 if (question[rs-1] == '\0') {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
770 // last byte read was the null terminator, we are done
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
771 break;
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carl
parents: 191
diff changeset
772 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
773 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
774 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
775 // peer closed the socket
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
776 #ifdef RESOLVER_DEBUG
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
777 my_syslog("process_resolver_requests() peer closed socket while reading question");
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carl
parents: 191
diff changeset
778 #endif
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
779 shutdown(socket, SHUT_RDWR);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
780 close(socket);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
781 return;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
782 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
783 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
784 question[rs-1] = '\0'; // ensure null termination
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
785
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
786 // find the answer
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
787 #ifdef NS_PACKETSZ
192
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carl
parents: 191
diff changeset
788 #ifdef RESOLVER_DEBUG
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
789 char text[1000];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
790 snprintf(text, sizeof(text), "process_resolver_requests() has a question %s", question);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
791 my_syslog(text);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
792 #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
793 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
794 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
795 else glom.length = (size_t)res_result;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
796 #else
192
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carl
parents: 191
diff changeset
797 glom.length = sizeof(glom.answer);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
798 glom.answer = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
799 struct hostent *host = gethostbyname(question);
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carl
parents: 191
diff changeset
800 if (host && (host->h_addrtype == AF_INET)) {
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carl
parents: 191
diff changeset
801 memcpy(&glom.answer, host->h_addr, sizeof(glom.answer));
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carl
parents: 191
diff changeset
802 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
803 #endif
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
804
192
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carl
parents: 191
diff changeset
805 // write the answer
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
806 char *buf = (char *)&glom;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
807 int len = glom.length + sizeof(glom.length);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
808 #ifdef RESOLVER_DEBUG
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carl
parents: 191
diff changeset
809 snprintf(text, sizeof(text), "process_resolver_requests() writing answer length %d for total %d", glom.length, len);
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carl
parents: 191
diff changeset
810 my_syslog(text);
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carl
parents: 191
diff changeset
811 #endif
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carl
parents: 191
diff changeset
812 int ws = 0;
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carl
parents: 191
diff changeset
813 while (len > ws) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
814 int ns = write(socket, buf+ws, len-ws);
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carl
parents: 191
diff changeset
815 if (ns > 0) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
816 ws += ns;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
817 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
818 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
819 // peer closed the socket!
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
820 #ifdef RESOLVER_DEBUG
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
821 my_syslog("process_resolver_requests() peer closed socket while writing answer");
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carl
parents: 191
diff changeset
822 #endif
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carl
parents: 191
diff changeset
823 shutdown(socket, SHUT_RDWR);
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carl
parents: 191
diff changeset
824 close(socket);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
825 return;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
826 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
827 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
828 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
829 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
830
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
831
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
832 ////////////////////////////////////////////////
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
833 // check a single dns list, return ip address in network byte order
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
834 //
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
835 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
836 uint32_t check_single(mlfiPriv &priv, int32_t ip, const char *suffix) {
192
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carl
parents: 191
diff changeset
837 // make a dns question
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
838 const u_char *src = (const u_char *)&ip;
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
839 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
840 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
841 if ((src[0] == 192) && (src[1] == 168)) return 0;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
842 if ((src[0] == 172) && (16 <= src[1]) && (src[1] <= 31)) return 0;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
843 #ifdef NS_MAXDNAME
192
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carl
parents: 191
diff changeset
844 char question[NS_MAXDNAME];
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
845 #else
192
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parents: 191
diff changeset
846 char question[1000];
94
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carl
parents: 92
diff changeset
847 #endif
192
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parents: 191
diff changeset
848 snprintf(question, sizeof(question), "%u.%u.%u.%u.%s.", src[3], src[2], src[1], src[0], suffix);
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carl
parents: 191
diff changeset
849 // ask the question, if we get an A record it implies a blacklisted ip address
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carl
parents: 191
diff changeset
850 return dns_interface(priv, question, false, NULL);
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
851 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
852
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
853
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carl
parents: 92
diff changeset
854 ////////////////////////////////////////////////
192
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carl
parents: 191
diff changeset
855 // check a single dnsbl
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
856 //
242
d8ee4c97b9ab 64 bit fixes for libresolv.a
Carl Byington <carl@five-ten-sg.com>
parents: 238
diff changeset
857 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
858 bool check_single(mlfiPriv &priv, int32_t ip, DNSBL &bl) {
192
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parents: 191
diff changeset
859 return check_single(priv, ip, bl.suffix);
94
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carl
parents: 92
diff changeset
860 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
861
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
862
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
863 ////////////////////////////////////////////////
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
864 // check a single dnswl
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
865 //
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
866 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
867 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
868 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
869 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
870 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
871 uint32_t m2 = (uint32_t)0x000000ff;
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
872 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
873 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
874 if ((int)l >= wl.level) return true;
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
875 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
876 return false;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
877 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
878
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
879
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
880 ////////////////////////////////////////////////
192
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carl
parents: 191
diff changeset
881 // check the dnsbls specified for this recipient
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
882 //
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
883 bool check_dnsbl(mlfiPriv &priv, dnsblp_list &dnsbll, DNSBLP &rejectlist);
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
884 bool check_dnsbl(mlfiPriv &priv, dnsblp_list &dnsbll, DNSBLP &rejectlist) {
192
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carl
parents: 191
diff changeset
885 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
886 DNSBLP dp = *i; // non null by construction
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
887 bool st;
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
888 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
889 if (f == priv.checked_black.end()) {
192
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carl
parents: 191
diff changeset
890 // have not checked this list yet
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carl
parents: 191
diff changeset
891 st = check_single(priv, priv.ip, *dp);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
892 rejectlist = dp;
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
893 priv.checked_black[dp] = st;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
894 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
895 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
896 st = (*f).second;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
897 rejectlist = (*f).first;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
898 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
899 if (st) return st;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
900 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
901 return false;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
902 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
903
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
904
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
905 ////////////////////////////////////////////////
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
906 // check the dnswls specified for this recipient
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
907 //
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
908 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
909 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
910 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
911 DNSWLP dp = *i; // non null by construction
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
912 bool st;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
913 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
914 if (f == priv.checked_white.end()) {
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
915 // have not checked this list yet
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
916 st = check_single(priv, priv.ip, *dp);
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
917 acceptlist = dp;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
918 priv.checked_white[dp] = st;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
919 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
920 else {
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
921 st = (*f).second;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
922 acceptlist = (*f).first;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
923 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
924 if (st) return st;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
925 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
926 return false;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
927 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
928
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
929
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
930 ////////////////////////////////////////////////
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
931 // check the hosts from the body against the content filter and uribl dnsbls
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
932 //
124
ea6f9c812faa put hostname in smtp message for uribl style lookups
carl
parents: 123
diff changeset
933 //
242
d8ee4c97b9ab 64 bit fixes for libresolv.a
Carl Byington <carl@five-ten-sg.com>
parents: 238
diff changeset
934 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
935 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
936 found = NULL; // normally ip address style
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
937 if (!priv.content_suffix && !priv.uribl_suffix) return false; // nothing to check
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
938 string_set &hosts = priv.memory->get_hosts();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
939 string_set &ignore = *priv.content_host_ignore;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
940
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
941 int count = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
942 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
943 int32_t_set ips;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
944 ns_map nameservers;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
945 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
946 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
947
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
948 // 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
949 string_set::iterator j = ignore.find(host);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
950 if (j != ignore.end()) continue;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
951
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
952 // 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
953 if ((cnt > limit) && (limit > 0) && random) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
954 int r = rand() % cnt;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
955 if (r >= limit) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
956 if (debug_syslog > 2) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
957 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
958 snprintf(buf, sizeof(buf), "host %s skipped", host);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
959 my_syslog(&priv, buf);
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 continue;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
962 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
963 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
964 count++;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
965 ip = dns_interface(priv, host, true, &nameservers);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
966 if (debug_syslog > 2) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
967 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
968 if (ip) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
969 char adr[sizeof "255.255.255.255 "];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
970 adr[0] = '\0';
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
971 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
972 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
973 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
974 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
975 snprintf(buf, sizeof(buf), "host %s not found", host);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
976 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
977 my_syslog(&priv, buf);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
978 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
979 if (ip) {
242
d8ee4c97b9ab 64 bit fixes for libresolv.a
Carl Byington <carl@five-ten-sg.com>
parents: 238
diff changeset
980 int32_t_set::iterator i = ips.find(ip);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
981 if (i == ips.end()) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
982 // we haven't looked this up yet
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
983 ips.insert(ip);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
984 // check dnsbl style list
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
985 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
986 msg = priv.content_message;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
987 return true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
988 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
989 // Check uribl & surbl style list
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
990 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
991 msg = priv.uribl_message;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
992 return true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
993 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
994 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
995 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
996 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
997 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
998 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
999 count++;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1000 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
1001 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
1002 ip = (*i).second;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1003 if (!ip) ip = dns_interface(priv, host, false, NULL);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1004 if (debug_syslog > 2) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1005 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1006 if (ip) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1007 char adr[sizeof "255.255.255.255 "];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1008 adr[0] = '\0';
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carl
parents: 191
diff changeset
1009 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
1010 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
1011 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1012 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1013 snprintf(buf, sizeof(buf), "ns %s not found", host);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1014 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1015 my_syslog(&priv, buf);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1016 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1017 if (ip) {
242
d8ee4c97b9ab 64 bit fixes for libresolv.a
Carl Byington <carl@five-ten-sg.com>
parents: 238
diff changeset
1018 int32_t_set::iterator i = ips.find(ip);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1019 if (i == ips.end()) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1020 ips.insert(ip);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1021 if (check_single(priv, ip, priv.content_suffix)) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1022 msg = priv.content_message;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1023 string_map::iterator j = nameservers.ns_host.find(host);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1024 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
1025 const char *refer = (*j).second;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1026 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1027 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
1028 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
1029 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1030 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1031 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
1032 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1033 return true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1034 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1035 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1036 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1037 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1038 return false;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1039 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1040
127
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 126
diff changeset
1041
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1042 ////////////////////////////////////////////////
127
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 126
diff changeset
1043 //
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 126
diff changeset
1044 // 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
1045 // enclosed in <>. I think older versions of sendmail supplied the <>
127
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 126
diff changeset
1046 // 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
1047 // 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
1048 // 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
1049 // 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
1050 // 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
1051 //
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1052 const char *to_lower_string(const char *email);
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1053 const char *to_lower_string(const char *email) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1054 int n = strlen(email);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1055 if (email[0] == '<') {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1056 // assume it also ends with >
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1057 n -= 2;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1058 if (n < 1) return strdup(email); // return "<>"
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1059 email++;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1060 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1061 if ((email[0] == '\'') && (email[n-1] == '\'') && (n > 2)) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1062 n -= 2;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1063 email++;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1064 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1065 char *key = strdup(email);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1066 key[n] = '\0';
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1067 for (int i=0; i<n; i++) key[i] = tolower(key[i]);
246
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1068 if ((n > 14) && (strncmp(key, "srs", 3) == 0)) {
235
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1069 // might have srs coding to be removed
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1070 const int nmatch = 6;
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1071 regmatch_t match[nmatch];
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1072 if (0 == regexec(&srs_pattern, key, nmatch, match, 0)) {
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1073 int s4 = match[4].rm_so; // domain
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1074 int e4 = match[4].rm_eo;
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1075 int s5 = match[5].rm_so; // user
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1076 int e5 = match[5].rm_eo;
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1077 if ((s4 != -1) && (s5 != -1)) {
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1078 char *newkey = strdup(key); // large enough
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1079 key[e4] = '\0';
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1080 key[e5] = '\0';
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1081 strcpy(newkey, key+s5); // user
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1082 strcat(newkey, "@"); // @
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1083 strcat(newkey, key+s4); // domain
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1084 free(key);
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1085 key = newkey;
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1086 }
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1087 }
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1088 }
246
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1089 if ((n > 7) && (strncmp(key, "prvs", 4) == 0)) {
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1090 // might have prvs coding to be removed
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1091 const int nmatch = 3;
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1092 regmatch_t match[nmatch];
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1093 if (0 == regexec(&prvs_pattern, key, nmatch, match, 0)) {
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1094 int s2 = match[2].rm_so; // user@domain
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1095 if (s2 != -1) {
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1096 char *newkey = strdup(key+s2); // user@domain
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1097 free(key);
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1098 key = newkey;
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1099 }
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1100 }
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1101 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1102 return key;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1103 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1104
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1105
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1106 ////////////////////////////////////////////////
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1107 // start of sendmail milter interfaces
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1108 //
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1109 sfsistat mlfi_connect(SMFICTX *ctx, char *hostname, _SOCK_ADDR *hostaddr)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1110 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1111 // allocate some private memory
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1112 mlfiPriv *priv = new mlfiPriv;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1113 if (hostaddr->sa_family == AF_INET) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1114 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
1115 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1116 // save the private data
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1117 smfi_setpriv(ctx, (void*)priv);
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1118
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1119 // continue processing
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1120 return SMFIS_CONTINUE;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1121 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1122
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1123 sfsistat mlfi_helo(SMFICTX * ctx, char *helohost)
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1124 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1125 mlfiPriv &priv = *MLFIPRIV;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1126 priv.helo = strdup(helohost);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1127 return SMFIS_CONTINUE;
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1128 }
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1129
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1130 sfsistat mlfi_envfrom(SMFICTX *ctx, char **from)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1131 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1132 mlfiPriv &priv = *MLFIPRIV;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1133 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
1134 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
1135 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
1136 priv.client_name = smfi_getsymval(ctx, (char*)"_");
191
2a67d31099c3 fix null pointer dereference from missing HELO command
carl
parents: 190
diff changeset
1137 if (!priv.helo) priv.helo = strdup("unknown");
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1138 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
1139 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
1140 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
1141 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
1142 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
1143 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
1144 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
1145 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
1146 //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
1147 //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
1148 //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
1149 }
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
1150 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1151 if (spamc != spamc_empty) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1152 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
1153 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1154 if (dccifd_port) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1155 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
1156 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1157 return SMFIS_CONTINUE;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1158 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1159
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1160 sfsistat mlfi_envrcpt(SMFICTX *ctx, char **rcpt)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1161 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1162 DNSBLP rejectlist = NULL; // list that caused the reject
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1163 mlfiPriv &priv = *MLFIPRIV;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1164 CONFIG &dc = *priv.pc;
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1165 const char *rcptaddr = rcpt[0];
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1166 const char *loto = to_lower_string(rcptaddr);
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
1167 bool self = (strcmp(loto, priv.mailaddr) == 0);
174
da0c41b9f672 don't whitelist addresses with embedded spaces
carl
parents: 173
diff changeset
1168
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1169 // 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
1170 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
1171 smfi_setreply(ctx, (char*)"550", (char*)"5.7.1", (char*)"bogus recipient");
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1172 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1173 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1174 // 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
1175 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
1176 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
1177 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
1178 // tell spam assassin and dccifd about this recipient
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1179 if (priv.assassin) priv.assassin->mlfi_envrcpt(ctx, loto);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1180 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
1181 // loto sending a reply back to priv.mailaddr
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1182 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
1183 const char *replyvalue = con2.find_from(loto);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1184 if (debug_syslog > 1) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1185 char buf[maxlen];
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1186 char buf2[maxlen];
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1187 char msg[maxlen];
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1188 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
1189 my_syslog(&priv, msg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1190 }
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1191 free((void*)loto);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1192 status st;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1193 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
1194 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
1195 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1196 }
259
be939802c64e add recipient rate limits by email from address or domain
Carl Byington <carl@five-ten-sg.com>
parents: 257
diff changeset
1197 if (!priv.authenticated && dc.default_context->is_unauthenticated_limited(priv.mailaddr)) {
be939802c64e add recipient rate limits by email from address or domain
Carl Byington <carl@five-ten-sg.com>
parents: 257
diff changeset
1198 int hourly, daily;
be939802c64e add recipient rate limits by email from address or domain
Carl Byington <carl@five-ten-sg.com>
parents: 257
diff changeset
1199 incr_rcpt_count(priv.mailaddr, hourly, daily);
be939802c64e add recipient rate limits by email from address or domain
Carl Byington <carl@five-ten-sg.com>
parents: 257
diff changeset
1200 int h_limit = dc.default_context->find_rate(priv.mailaddr);
be939802c64e add recipient rate limits by email from address or domain
Carl Byington <carl@five-ten-sg.com>
parents: 257
diff changeset
1201 int d_limit = dc.default_context->get_daily_multiple() * h_limit;
be939802c64e add recipient rate limits by email from address or domain
Carl Byington <carl@five-ten-sg.com>
parents: 257
diff changeset
1202 if (debug_syslog > 1) {
be939802c64e add recipient rate limits by email from address or domain
Carl Byington <carl@five-ten-sg.com>
parents: 257
diff changeset
1203 char msg[maxlen];
be939802c64e add recipient rate limits by email from address or domain
Carl Byington <carl@five-ten-sg.com>
parents: 257
diff changeset
1204 snprintf(msg, sizeof(msg), "unauthenticated address %s (%d %d recipients, %d %d limits)", priv.mailaddr, hourly, daily, h_limit, d_limit);
be939802c64e add recipient rate limits by email from address or domain
Carl Byington <carl@five-ten-sg.com>
parents: 257
diff changeset
1205 my_syslog(&priv, msg);
be939802c64e add recipient rate limits by email from address or domain
Carl Byington <carl@five-ten-sg.com>
parents: 257
diff changeset
1206 }
be939802c64e add recipient rate limits by email from address or domain
Carl Byington <carl@five-ten-sg.com>
parents: 257
diff changeset
1207 if ((hourly > h_limit) || (daily > d_limit)){
be939802c64e add recipient rate limits by email from address or domain
Carl Byington <carl@five-ten-sg.com>
parents: 257
diff changeset
1208 smfi_setreply(ctx, (char*)"550", (char*)"5.7.1", (char*)"recipient rate limit exceeded");
be939802c64e add recipient rate limits by email from address or domain
Carl Byington <carl@five-ten-sg.com>
parents: 257
diff changeset
1209 return SMFIS_REJECT;
be939802c64e add recipient rate limits by email from address or domain
Carl Byington <carl@five-ten-sg.com>
parents: 257
diff changeset
1210 }
be939802c64e add recipient rate limits by email from address or domain
Carl Byington <carl@five-ten-sg.com>
parents: 257
diff changeset
1211 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1212 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
1213 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
1214 incr_rcpt_count(priv.authenticated, 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
1215 int h_limit = dc.default_context->find_rate(priv.authenticated);
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
1216 int d_limit = dc.default_context->get_daily_multiple() * h_limit;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1217 if (debug_syslog > 1) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1218 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
1219 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
1220 my_syslog(&priv, msg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1221 }
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
1222 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
1223 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
1224 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1225 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1226 st = white;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1227 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1228 else if (fromvalue == token_black) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1229 st = black;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1230 }
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
1231 else if ((fromvalue == token_white) && !self) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1232 st = white;
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 else {
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1235 // check the dns based lists, whitelist first
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1236 DNSWLP acceptlist = NULL; // list that caused the whitelisting
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1237 if (check_dnswl(priv, con.get_dnswl_list(), acceptlist)) {
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1238 st = white;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1239 if (debug_syslog > 1) {
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1240 char msg[maxlen];
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1241 snprintf(msg, sizeof(msg), "whitelisted by %s", acceptlist->name);
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1242 my_syslog(&priv, msg);
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1243 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1244 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1245 else if (check_dnsbl(priv, con.get_dnsbl_list(), rejectlist)) {
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1246 st = reject;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1247 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1248 else {
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1249 st = oksofar;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1250 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1251 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1252 if (st == reject) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1253 // reject the recipient based on some dnsbl
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1254 char adr[sizeof "255.255.255.255 "];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1255 adr[0] = '\0';
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1256 inet_ntop(AF_INET, (const u_char *)&priv.ip, adr, sizeof(adr));
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1257 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1258 snprintf(buf, sizeof(buf), rejectlist->message, adr, adr);
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1259 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
1260 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1261 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1262 if (st == oksofar) {
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1263 const char *msg = con.generic_match(priv.client_name);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1264 if (msg) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1265 // reject the recipient based on generic reverse dns
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1266 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1267 snprintf(buf, sizeof(buf), msg, priv.client_name);
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1268 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
1269 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1270 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1271 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1272 if (st == black) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1273 // 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
1274 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
1275 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1276 }
203
92a5c866bdfa Verify from/to pairs even if they might be explicitly whitelisted.
Carl Byington <carl@five-ten-sg.com>
parents: 194
diff changeset
1277 if (ver) {
92a5c866bdfa Verify from/to pairs even if they might be explicitly whitelisted.
Carl Byington <carl@five-ten-sg.com>
parents: 194
diff changeset
1278 // try to verify this from/to pair of addresses even if it might be explicitly whitelisted
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1279 const char *loto = to_lower_string(rcptaddr);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1280 bool rc = ver->ok(priv.mailaddr, loto);
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1281 free((void*)loto);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1282 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
1283 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
1284 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1285 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1286 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1287 // 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
1288 // if needed to ensure we can accept replies
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1289 loto = to_lower_string(rcptaddr);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1290 WHITELISTERP w = con2.find_autowhite(loto, priv.mailaddr);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1291 // check if local part is too big
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1292 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
1293 const char *p = strchr(loto, '@');
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1294 int len = (p) ? p-loto : max_local_size;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1295 if (len >= max_local_size) w = NULL; // too big, pretend we don't have a whitelister
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1296 // record it if we have a whitelister
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1297 if (w) {
231
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1298 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
1299 priv.delayer.push_back(dwp);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1300 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1301 else {
231
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1302 free((void*)loto); // or we free it here
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1303 }
179
8b86a894514d embedded dcc filtering
carl
parents: 178
diff changeset
1304
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1305 // accept the recipient
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1306 if (!con.get_content_filtering()) st = white;
179
8b86a894514d embedded dcc filtering
carl
parents: 178
diff changeset
1307
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1308 if (st == oksofar) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1309 // remember first content filtering context
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1310 if (con.get_content_filtering()) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1311 if (!priv.content_context) priv.content_context = &con;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1312 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
1313 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
1314 return SMFIS_TEMPFAIL;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1315 }
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
1316 priv.need_content_filter(rcptaddr, con);
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
1317 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
1318 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
1319 // 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
1320 if (priv.helo_uribl) {
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
1321 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
1322 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
1323 }
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
1324 // content filterint implies also checking client reverse dns 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
1325 if (priv.client_uribl) {
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
1326 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
1327 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
1328 }
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
1329 // content filterint implies also checking mail from domain 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
1330 if (priv.from_uribl) {
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
1331 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
1332 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
1333 }
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
1334 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
1335 char buf[maxlen];
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
1336 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
1337 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
1338 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
1339 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1340 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1341 // 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
1342 register_string(priv.env_to, rcptaddr, &con);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1343 priv.only_whites = false;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1344 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
1345 (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
1346 priv.want_dccgrey |= (priv.dccifd) && // have dcc interface and
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1347 (con.get_grey()); // want to use it for greylisting
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1348 priv.want_dccbulk |= (priv.dccifd) && // have dcc interface and
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1349 (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
1350 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1351 if (st == white) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1352 priv.have_whites = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1353 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1354 return SMFIS_CONTINUE;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1355 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1356
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1357 sfsistat mlfi_header(SMFICTX* ctx, char* headerf, char* headerv)
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1358 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1359 mlfiPriv &priv = *MLFIPRIV;
231
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1360 // 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
1361 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
1362 ((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
1363 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
1364 }
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
1365
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1366 // other headers are only needed for content filtering
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1367 if (priv.authenticated) return SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1368 if (priv.only_whites) return SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1369 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
1370 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
1371 return SMFIS_CONTINUE;
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1372 }
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1373
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1374 sfsistat mlfi_eoh(SMFICTX* ctx)
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1375 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1376 mlfiPriv &priv = *MLFIPRIV;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1377 // delayed autowhitelisting
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1378 while (!priv.delayer.empty()) {
231
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1379 DELAYWHITEP dwp = priv.delayer.front();
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1380 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
1381 if (priv.allow_autowhitelisting) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1382 WHITELISTERP w = dwp->get_w();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1383 CONTEXTP con2 = dwp->get_con();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1384 if (debug_syslog > 1) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1385 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1386 char msg[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1387 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
1388 my_syslog(&priv, msg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1389 }
231
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1390 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
1391 }
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1392 else {
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1393 if (debug_syslog > 1) {
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1394 char msg[maxlen];
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1395 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
1396 my_syslog(&priv, msg);
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1397 }
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1398 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
1399 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1400 delete dwp;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1401 priv.delayer.pop_front();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1402 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1403 // content filtering
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1404 if (priv.authenticated) return SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1405 if (priv.only_whites) return SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1406 if (priv.want_spamassassin) priv.assassin->mlfi_eoh();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1407 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
1408 return SMFIS_CONTINUE;
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1409 }
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1410
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1411 sfsistat mlfi_body(SMFICTX *ctx, u_char *data, size_t len)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1412 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1413 mlfiPriv &priv = *MLFIPRIV;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1414 if (priv.authenticated) return SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1415 if (priv.only_whites) return SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1416 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
1417 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
1418 priv.scanner->scan(data, len);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1419 return SMFIS_CONTINUE;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1420 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1421
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1422 sfsistat mlfi_eom(SMFICTX *ctx)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1423 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1424 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
1425 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
1426 const char *host = NULL;
242
d8ee4c97b9ab 64 bit fixes for libresolv.a
Carl Byington <carl@five-ten-sg.com>
parents: 238
diff changeset
1427 int32_t ip;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1428 // process end of message
190
004b855c6c1f fix null pointer dereference from missing HELO command
carl
parents: 188
diff changeset
1429 priv.eom = true;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1430 if (priv.authenticated || priv.only_whites) rc = SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1431 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1432 // assert env_to not empty, it contains the
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1433 // non-whitelisted folks that want content filtering
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1434 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
1435 bool grey = false;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1436 int bulk = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1437 if (priv.want_dccgrey || priv.want_dccbulk) priv.dccifd->mlfi_eom(grey, bulk);
178
d6531c702be3 embedded dcc filtering
carl
parents: 177
diff changeset
1438
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1439 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1440 string msg;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1441 string_set alive;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1442 bool random = false;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1443 int limit = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1444 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
1445 const char *rcpt = (*i).first;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1446 CONTEXT &con = *((*i).second);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1447 if (!con.acceptable_content(*priv.memory, score, bulk, msg)) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1448 // bad html tags or excessive hosts or
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1449 // high spam assassin score or dcc bulk threshold exceedeed
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1450 smfi_delrcpt(ctx, (char*)rcpt);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1451 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1452 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1453 alive.insert(rcpt);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1454 random |= con.get_host_random();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1455 limit = max(limit, con.get_host_limit());
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1456 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1457 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1458 bool rejecting = alive.empty(); // if alive is empty, we must have set msg above in acceptable_content()
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1459 if (!rejecting) {
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1460 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
1461 const char *found;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1462 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
1463 if (found) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1464 // uribl style
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1465 snprintf(buf, sizeof(buf), fmt, host, found);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1466 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1467 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1468 // dnsbl style
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1469 char adr[sizeof "255.255.255.255 "];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1470 adr[0] = '\0';
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1471 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
1472 snprintf(buf, sizeof(buf), fmt, host, adr);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1473 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1474 msg = string(buf);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1475 rejecting = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1476 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1477 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1478 if (!rejecting) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1479 if (priv.want_dccgrey && grey) {
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1480 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
1481 rc = SMFIS_TEMPFAIL;
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 else rc = SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1484 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1485 else if (!priv.have_whites) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1486 // can reject the entire message
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1487 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
1488 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
1489 rc = SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1490 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1491 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1492 // need to accept it but remove the recipients that don't want it
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1493 for (string_set::iterator i=alive.begin(); i!=alive.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
1494 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
1495 smfi_delrcpt(ctx, (char*)rcpt);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1496 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1497 rc = SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1498 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1499 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1500 // reset for a new message on the same connection
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1501 mlfi_abort(ctx);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1502 return rc;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1503 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1504
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1505 sfsistat mlfi_abort(SMFICTX *ctx)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1506 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1507 mlfiPriv &priv = *MLFIPRIV;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1508 priv.reset();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1509 return SMFIS_CONTINUE;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1510 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1511
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1512 sfsistat mlfi_close(SMFICTX *ctx)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1513 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1514 mlfiPriv *priv = MLFIPRIV;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1515 if (!priv) return SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1516 delete priv;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1517 smfi_setpriv(ctx, NULL);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1518 return SMFIS_CONTINUE;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1519 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1520
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1521 struct smfiDesc smfilter =
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1522 {
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1523 (char*)"DNSBL", // filter name
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1524 SMFI_VERSION, // version code -- do not change
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1525 SMFIF_DELRCPT, // flags
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1526 mlfi_connect, // connection info filter
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1527 mlfi_helo, // SMTP HELO command filter
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1528 mlfi_envfrom, // envelope sender filter
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1529 mlfi_envrcpt, // envelope recipient filter
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1530 mlfi_header, // header filter
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1531 mlfi_eoh, // end of header
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1532 mlfi_body, // body block filter
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1533 mlfi_eom, // end of message
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1534 mlfi_abort, // message aborted
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1535 mlfi_close, // connection cleanup
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1536 };
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1537
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1538
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1539 ////////////////////////////////////////////////
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1540 // reload the config
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1541 //
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1542 CONFIG* new_conf();
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1543 CONFIG* new_conf() {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1544 CONFIG *newc = new CONFIG;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
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diff changeset
1545 pthread_mutex_lock(&config_mutex);
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parents: 191
diff changeset
1546 newc->generation = generation++;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1547 pthread_mutex_unlock(&config_mutex);
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carl
parents: 191
diff changeset
1548 if (debug_syslog) {
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carl
parents: 191
diff changeset
1549 char buf[maxlen];
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carl
parents: 191
diff changeset
1550 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
1551 my_syslog(buf);
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carl
parents: 191
diff changeset
1552 }
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carl
parents: 191
diff changeset
1553 if (load_conf(*newc, "dnsbl.conf")) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1554 newc->load_time = time(NULL);
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carl
parents: 191
diff changeset
1555 return newc;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1556 }
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carl
parents: 191
diff changeset
1557 delete newc;
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carl
parents: 191
diff changeset
1558 return NULL;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1559 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1560
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1561
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1562 ////////////////////////////////////////////////
192
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carl
parents: 191
diff changeset
1563 // thread to watch the old config files for changes
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1564 // and reload when needed.
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1565 // we also clear the SMTP AUTH recipient counts hourly
94
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carl
parents: 92
diff changeset
1566 //
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1567 extern "C" {void* config_loader(void *arg);}
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1568 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
1569 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
1570 int loop2 = 0;
192
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parents: 191
diff changeset
1571 while (loader_run) {
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carl
parents: 191
diff changeset
1572 sleep(180); // look for modifications every 3 minutes
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carl
parents: 191
diff changeset
1573 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
1574 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
1575 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
1576 if (loop1 == 20) {
192
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carl
parents: 191
diff changeset
1577 // three minutes thru each loop, 20 loops per hour
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
1578 // clear the recipient hourly counts
192
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carl
parents: 191
diff changeset
1579 pthread_mutex_lock(&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
1580 for (rcpt_rates::iterator i=rcpt_hourly_counts.begin(); i!=rcpt_hourly_counts.end(); i++) {
192
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parents: 191
diff changeset
1581 (*i).second = 0;
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carl
parents: 191
diff changeset
1582 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1583 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
1584 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
1585 }
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
1586 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
1587 // three minutes thru each loop, 480 loops per day
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
1588 // clear the recipient daily counts
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
1589 pthread_mutex_lock(&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
1590 for (rcpt_rates::iterator i=rcpt_daily_counts.begin(); i!=rcpt_daily_counts.end(); i++) {
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
1591 (*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
1592 }
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
1593 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
1594 loop2 = 0;
192
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carl
parents: 191
diff changeset
1595 }
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carl
parents: 191
diff changeset
1596 CONFIG &dc = *config;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1597 time_t then = dc.load_time;
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carl
parents: 191
diff changeset
1598 struct stat st;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1599 bool reload = false;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1600 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
1601 const char *fn = *i;
192
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carl
parents: 191
diff changeset
1602 if (stat(fn, &st)) reload = true; // file disappeared
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carl
parents: 191
diff changeset
1603 else if (st.st_mtime > then) reload = true; // file modified
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carl
parents: 191
diff changeset
1604 if (reload) break;
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carl
parents: 191
diff changeset
1605 }
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carl
parents: 191
diff changeset
1606 if (reload) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1607 CONFIG *newc = new_conf();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1608 if (newc) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1609 // replace the global config pointer
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1610 pthread_mutex_lock(&config_mutex);
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carl
parents: 191
diff changeset
1611 CONFIG *pc = config;
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parents: 191
diff changeset
1612 bool last = pc && (!pc->reference_count);
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carl
parents: 191
diff changeset
1613 config = newc;
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parents: 191
diff changeset
1614 pthread_mutex_unlock(&config_mutex);
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carl
parents: 191
diff changeset
1615 if (last) delete pc; // there were no references to this config
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carl
parents: 191
diff changeset
1616 }
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carl
parents: 191
diff changeset
1617 else {
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carl
parents: 191
diff changeset
1618 // failed to load new config
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carl
parents: 191
diff changeset
1619 my_syslog("failed to load new configuration");
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carl
parents: 191
diff changeset
1620 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
1621 // update the load time on the current config to prevent complaining every 3 minutes
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carl
parents: 191
diff changeset
1622 dc.load_time = time(NULL);
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carl
parents: 191
diff changeset
1623 }
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carl
parents: 191
diff changeset
1624 }
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carl
parents: 191
diff changeset
1625 }
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carl
parents: 191
diff changeset
1626 return NULL;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1627 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1628
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1629
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1630 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
1631 void usage(const char *prog)
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1632 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1633 fprintf(stderr, "Usage: %s [-d [level]] [-c] [-s] [-e from|to] [-b dccifd-addr] -r port -p sm-sock-addr [-t timeout]\n", prog);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1634 fprintf(stderr, "where dccifd_addr is for the connection to dccifd\n");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1635 fprintf(stderr, " and should be local-domain-socket-file-name\n");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1636 fprintf(stderr, "where port is for the connection to our own dns resolver processes\n");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1637 fprintf(stderr, " and should be local-domain-socket-file-name\n");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1638 fprintf(stderr, "where sm-sock-addr is for the connection to sendmail\n");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1639 fprintf(stderr, " and should be one of\n");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1640 fprintf(stderr, " inet:port@ip-address\n");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1641 fprintf(stderr, " local:local-domain-socket-file-name\n");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1642 fprintf(stderr, "-c will load and dump the config to stdout\n");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1643 fprintf(stderr, "-s will stress test the config loading code by repeating the load/free cycle\n");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1644 fprintf(stderr, " in an infinte loop.\n");
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carl
parents: 191
diff changeset
1645 fprintf(stderr, "-d will set the syslog message level, currently 0 to 3\n");
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carl
parents: 191
diff changeset
1646 fprintf(stderr, "-e will print the results of looking up the from and to addresses in the\n");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1647 fprintf(stderr, " current config. The | character is used to separate the from and to\n");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1648 fprintf(stderr, " addresses in the argument to the -e switch\n");
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1649 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1650
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1651
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1652
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1653 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
1654 void setup_socket(const char *sock) {
192
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carl
parents: 191
diff changeset
1655 unlink(sock);
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1656 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1657
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1658
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1659 /*
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1660 * The signal handler function -- only gets called when a SIGCHLD
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1661 * is received, ie when a child terminates
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1662 */
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1663 void sig_chld(int signo)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1664 {
192
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carl
parents: 191
diff changeset
1665 int status;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1666 /* Wait for any child without blocking */
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1667 while (waitpid(-1, &status, WNOHANG) > 0) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1668 // ignore child exit status, we only do this to cleanup zombies
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carl
parents: 191
diff changeset
1669 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1670 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1671
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1672
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1673 int main(int argc, char**argv)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1674 {
192
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parents: 191
diff changeset
1675 token_init();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1676 bool check = false;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1677 bool stress = false;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1678 bool setconn = false;
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carl
parents: 191
diff changeset
1679 bool setreso = false;
244
ef97c7cd4a6e const correctness fixes from new gcc, libresolv.a moved to glibc-static on newer distributions
Carl Byington <carl@five-ten-sg.com>
parents: 242
diff changeset
1680 char *email = NULL;
192
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carl
parents: 191
diff changeset
1681 int c;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1682 const char *args = "b:r:p:t:e:d:chs";
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1683 extern char *optarg;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1684
235
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1685 // setup srs coding detection
246
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1686 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
1687 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
1688 exit(3);
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1689 }
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1690
246
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1691 // setup prvs coding detection
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1692 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
1693 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
1694 exit(3);
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1695 }
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1696
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1697 // Process command line options
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1698 while ((c = getopt(argc, argv, args)) != -1) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1699 switch (c) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1700 case 'b':
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1701 if (optarg == NULL || *optarg == '\0') {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1702 fprintf(stderr, "Illegal dccifd socket: %s\n", optarg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1703 exit(EX_USAGE);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1704 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1705 dccifd_port = strdup(optarg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1706 break;
177
a4d313c2460b start embedded dcc filtering
carl
parents: 174
diff changeset
1707
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1708 case 'r':
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1709 if (optarg == NULL || *optarg == '\0') {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1710 fprintf(stderr, "Illegal resolver socket: %s\n", optarg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1711 exit(EX_USAGE);
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 resolver_port = strdup(optarg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1714 setup_socket(resolver_port);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1715 setreso = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1716 break;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1717
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1718 case 'p':
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1719 if (optarg == NULL || *optarg == '\0') {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1720 fprintf(stderr, "Illegal sendmail socket: %s\n", optarg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1721 exit(EX_USAGE);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1722 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1723 if (smfi_setconn(optarg) == MI_FAILURE) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1724 fprintf(stderr, "smfi_setconn failed\n");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1725 exit(EX_SOFTWARE);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1726 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1727 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
1728 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
1729 setconn = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1730 break;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1731
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1732 case 't':
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1733 if (optarg == NULL || *optarg == '\0') {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1734 fprintf(stderr, "Illegal timeout: %s\n", optarg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1735 exit(EX_USAGE);
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 if (smfi_settimeout(atoi(optarg)) == MI_FAILURE) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1738 fprintf(stderr, "smfi_settimeout failed\n");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1739 exit(EX_SOFTWARE);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1740 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1741 break;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1742
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1743 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
1744 if (email) free((void*)email);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1745 email = strdup(optarg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1746 break;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1747
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1748 case 'c':
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1749 check = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1750 break;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1751
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1752 case 's':
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1753 stress = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1754 break;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1755
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1756 case 'd':
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1757 if (optarg == NULL || *optarg == '\0') debug_syslog = 1;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1758 else debug_syslog = atoi(optarg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1759 break;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1760
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1761 case 'h':
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1762 default:
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1763 usage(argv[0]);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1764 exit(EX_USAGE);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1765 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1766 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1767
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1768 if (check) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1769 use_syslog = false;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1770 debug_syslog = 10;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1771 CONFIG *conf = new_conf();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1772 if (conf) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1773 conf->dump();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1774 delete conf;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1775 clear_strings(); // for valgrind checking
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1776 return 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1777 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1778 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1779 return 1; // config failed to load
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1780 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1781 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1782
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1783 if (stress) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1784 fprintf(stdout, "stress testing\n");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1785 while (1) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1786 for (int i=0; i<10; i++) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1787 CONFIG *conf = new_conf();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1788 if (conf) delete conf;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1789 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1790 fprintf(stdout, ".");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1791 fflush(stdout);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1792 sleep(1);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1793 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1794 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1795
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1796 if (email) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1797 char *x = strchr(email, '|');
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1798 if (x) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1799 *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
1800 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
1801 const char *to = to_lower_string(x+1);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1802 use_syslog = false;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1803 CONFIG *conf = new_conf();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1804 if (conf) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1805 CONTEXTP con = conf->find_context(to);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1806 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1807 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
1808 CONTEXTP fc = con->find_context(from);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1809 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
1810 const char *st = fc->find_from(from);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1811 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
1812 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
1813 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
1814 delete conf;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1815 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1816 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1817 return 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1818 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1819
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1820 if (!setconn) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1821 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
1822 usage(argv[0]);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1823 exit(EX_USAGE);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1824 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1825
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1826 if (!setreso) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1827 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
1828 usage(argv[0]);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1829 exit(EX_USAGE);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1830 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1831
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1832 if (smfi_register(smfilter) == MI_FAILURE) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1833 fprintf(stderr, "smfi_register failed\n");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1834 exit(EX_UNAVAILABLE);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1835 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1836
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1837 // switch to background mode
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1838 if (daemon(1,0) < 0) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1839 fprintf(stderr, "daemon() call failed\n");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1840 exit(EX_UNAVAILABLE);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1841 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1842
192
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diff changeset
1843 // write the pid
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parents: 191
diff changeset
1844 const char *pidpath = "/var/run/dnsbl.pid";
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parents: 191
diff changeset
1845 unlink(pidpath);
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parents: 191
diff changeset
1846 FILE *f = fopen(pidpath, "w");
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parents: 191
diff changeset
1847 if (f) {
94
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parents: 92
diff changeset
1848 #ifdef linux
192
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parents: 191
diff changeset
1849 // from a comment in the DCC source code:
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carl
parents: 191
diff changeset
1850 // Linux threads are broken. Signals given the
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carl
parents: 191
diff changeset
1851 // original process are delivered to only the
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carl
parents: 191
diff changeset
1852 // thread that happens to have that PID. The
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carl
parents: 191
diff changeset
1853 // sendmail libmilter thread that needs to hear
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carl
parents: 191
diff changeset
1854 // SIGINT and other signals does not, and that breaks
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carl
parents: 191
diff changeset
1855 // scripts that need to stop milters.
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carl
parents: 191
diff changeset
1856 // However, signaling the process group works.
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carl
parents: 191
diff changeset
1857 fprintf(f, "-%d\n", (u_int)getpgrp());
94
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carl
parents: 92
diff changeset
1858 #else
192
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parents: 191
diff changeset
1859 fprintf(f, "%d\n", (u_int)getpid());
94
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carl
parents: 92
diff changeset
1860 #endif
192
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1861 fclose(f);
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parents: 191
diff changeset
1862 }
94
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parents: 92
diff changeset
1863
192
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parents: 191
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1864 // initialize the thread sync objects
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parents: 191
diff changeset
1865 pthread_mutex_init(&config_mutex, 0);
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carl
parents: 191
diff changeset
1866 pthread_mutex_init(&syslog_mutex, 0);
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diff changeset
1867 pthread_mutex_init(&resolve_mutex, 0);
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diff changeset
1868 pthread_mutex_init(&fd_pool_mutex, 0);
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parents: 191
diff changeset
1869 pthread_mutex_init(&verifier_mutex, 0);
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diff changeset
1870 pthread_mutex_init(&whitelister_mutex, 0);
94
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carl
parents: 92
diff changeset
1871
192
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diff changeset
1872 // drop root privs
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carl
parents: 191
diff changeset
1873 struct passwd *pw = getpwnam("dnsbl");
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diff changeset
1874 if (pw) {
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1875 if (setgid(pw->pw_gid) == -1) {
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carl
parents: 191
diff changeset
1876 my_syslog("failed to switch to group dnsbl");
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carl
parents: 191
diff changeset
1877 }
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diff changeset
1878 if (setuid(pw->pw_uid) == -1) {
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carl
parents: 191
diff changeset
1879 my_syslog("failed to switch to user dnsbl");
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carl
parents: 191
diff changeset
1880 }
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diff changeset
1881 }
94
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carl
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1882
192
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diff changeset
1883 // load the initial config
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diff changeset
1884 config = new_conf();
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1885 if (!config) {
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diff changeset
1886 my_syslog("failed to load initial configuration, quitting");
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carl
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diff changeset
1887 exit(1);
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parents: 191
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1888 }
94
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carl
parents: 92
diff changeset
1889
192
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1890 // fork off the resolver listener process
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carl
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1891 pid_t child = fork();
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1892 if (child < 0) {
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parents: 191
diff changeset
1893 my_syslog("failed to create resolver listener process");
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carl
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diff changeset
1894 exit(0);
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parents: 191
diff changeset
1895 }
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1896 if (child == 0) {
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diff changeset
1897 // we are the child - dns resolver listener process
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diff changeset
1898 resolver_socket = socket(AF_UNIX, SOCK_STREAM, 0);
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diff changeset
1899 if (resolver_socket < 0) {
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carl
parents: 191
diff changeset
1900 my_syslog("child failed to create resolver socket");
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carl
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diff changeset
1901 exit(0); // failed
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parents: 191
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1902 }
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diff changeset
1903 sockaddr_un server;
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1904 memset(&server, '\0', sizeof(server));
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1905 server.sun_family = AF_UNIX;
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diff changeset
1906 strncpy(server.sun_path, resolver_port, sizeof(server.sun_path)-1);
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1907 //try to bind the address to the socket.
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carl
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diff changeset
1908 if (bind(resolver_socket, (sockaddr *)&server, sizeof(server)) < 0) {
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carl
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1909 // bind failed
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1910 shutdown(resolver_socket, SHUT_RDWR);
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1911 close(resolver_socket);
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carl
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1912 my_syslog("child failed to bind resolver socket");
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carl
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1913 exit(0); // failed
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1914 }
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diff changeset
1915 //listen on the socket.
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1916 if (listen(resolver_socket, 10) < 0) {
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1917 // listen failed
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1918 shutdown(resolver_socket, SHUT_RDWR);
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1919 close(resolver_socket);
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1920 my_syslog("child failed to listen to resolver socket");
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carl
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1921 exit(0); // failed
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1922 }
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diff changeset
1923 // setup sigchld handler to prevent zombies
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carl
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diff changeset
1924 struct sigaction act;
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1925 act.sa_handler = sig_chld; // Assign sig_chld as our SIGCHLD handler
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1926 sigemptyset(&act.sa_mask); // We don't want to block any other signals in this example
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1927 act.sa_flags = SA_NOCLDSTOP; // only want children that have terminated
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1928 if (sigaction(SIGCHLD, &act, NULL) < 0) {
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carl
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diff changeset
1929 my_syslog("child failed to setup SIGCHLD handler");
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1930 exit(0); // failed
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1931 }
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1932 while (true) {
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diff changeset
1933 sockaddr_un client;
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1934 socklen_t clientlen = sizeof(client);
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1935 int s = accept(resolver_socket, (sockaddr *)&client, &clientlen);
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1936 if (s > 0) {
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1937 // accept worked, it did not get cancelled before we could accept it
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diff changeset
1938 // fork off a process to handle this connection
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1939 int newchild = fork();
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1940 if (newchild == 0) {
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carl
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1941 // this is the worker process
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carl
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1942 // child does not need the listening socket
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1943 close(resolver_socket);
220
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parents: 216
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1944 #ifdef NS_PACKETSZ
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parents: 216
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1945 res_init();
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parents: 216
diff changeset
1946 _res.retry = 2;
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parents: 216
diff changeset
1947 _res.retrans = RES_TIMEOUT;
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1948 #endif
192
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1949 process_resolver_requests(s);
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1950 exit(0);
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diff changeset
1951 }
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1952 else {
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1953 // this is the parent
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1954 // parent does not need the accepted socket
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1955 close(s);
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diff changeset
1956 }
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1957 }
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diff changeset
1958 }
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diff changeset
1959 exit(0); // make sure we don't fall thru.
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diff changeset
1960 }
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1961 else {
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diff changeset
1962 sleep(2); // allow child to get started
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1963 }
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1964
192
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diff changeset
1965 // only create threads after the fork() in daemon
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diff changeset
1966 pthread_t tid;
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1967 if (pthread_create(&tid, 0, config_loader, 0))
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diff changeset
1968 my_syslog("failed to create config loader thread");
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carl
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1969 if (pthread_detach(tid))
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parents: 191
diff changeset
1970 my_syslog("failed to detach config loader thread");
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1971
192
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1972 if (pthread_create(&tid, 0, verify_closer, 0))
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carl
parents: 191
diff changeset
1973 my_syslog("failed to create verify closer thread");
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carl
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diff changeset
1974 if (pthread_detach(tid))
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carl
parents: 191
diff changeset
1975 my_syslog("failed to detach verify closer thread");
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diff changeset
1976
192
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parents: 191
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1977 if (pthread_create(&tid, 0, whitelister_writer, 0))
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carl
parents: 191
diff changeset
1978 my_syslog("failed to create autowhite writer thread");
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carl
parents: 191
diff changeset
1979 if (pthread_detach(tid))
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carl
parents: 191
diff changeset
1980 my_syslog("failed to detach autowhite writer thread");
153
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parents: 152
diff changeset
1981
192
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diff changeset
1982 time_t starting = time(NULL);
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parents: 191
diff changeset
1983 int rc = smfi_main();
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carl
parents: 191
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1984 if ((rc != MI_SUCCESS) && (time(NULL) > starting+5*60)) {
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carl
parents: 191
diff changeset
1985 my_syslog("trying to restart after smfi_main()");
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carl
parents: 191
diff changeset
1986 loader_run = false; // eventually the config loader thread will terminate
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carl
parents: 191
diff changeset
1987 execvp(argv[0], argv);
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carl
parents: 191
diff changeset
1988 }
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carl
parents: 191
diff changeset
1989 exit((rc == MI_SUCCESS) ? 0 : EX_UNAVAILABLE);
94
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carl
parents: 92
diff changeset
1990 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
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1991