annotate src/dnsbl.cpp @ 248:b0738685bf51

latest tld list; fix uninitialized variable
author Carl Byington <carl@five-ten-sg.com>
date Fri, 06 Jan 2012 22:07:45 -0800
parents 8b0f16abee53
children 15bf4f68a0b2
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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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67
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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_counts; // protected with rate_mutex
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118
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119
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120 struct ns_map {
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121 // all the strings are owned by the keys/values in the ns_host string map
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122 string_map ns_host; // nameserver name -> host name that uses this name server
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123 ns_mapper ns_ip; // nameserver name -> ipv4 address of the name server
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124 ~ns_map();
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125 void add(const char *name, const char *refer);
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126 };
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127
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128
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129 ns_map::~ns_map() {
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130 for (string_map::iterator i=ns_host.begin(); i!=ns_host.end(); i++) {
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131 const char *x = (*i).first;
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132 const char *y = (*i).second;
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133 free((void*)x);
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134 free((void*)y);
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135 }
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136 ns_ip.clear();
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137 ns_host.clear();
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138 }
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140
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141 void ns_map::add(const char *name, const char *refer) {
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142 string_map::iterator i = ns_host.find(name);
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143 if (i != ns_host.end()) return;
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144 char *x = strdup(name);
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145 char *y = strdup(refer);
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146 ns_ip[x] = 0;
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147 ns_host[x] = y;
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148
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149 }
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150
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151 // packed structure to allow a single socket write to dump the
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152 // length and the following answer. The packing attribute is gcc specific.
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153 struct glommer {
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154 size_t length;
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155 #ifdef NS_PACKETSZ
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156 u_char answer[NS_PACKETSZ*4]; // with a resolver, we return resolver answers
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157 #else
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158 int32_t answer; // without a resolver, we return a single ipv4 address, 0 == no answer
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159 #endif
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160 } __attribute__ ((packed));
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161
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162
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163 ////////////////////////////////////////////////
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164 // helper to manipulate recipient counts
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165 //
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166 int incr_rcpt_count(const char *user);
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167 int incr_rcpt_count(const char *user) {
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168 pthread_mutex_lock(&rate_mutex);
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169 rcpt_rates::iterator i = rcpt_counts.find(user);
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170 int c = 1;
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171 if (i == rcpt_counts.end()) {
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172 user = strdup(user);
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173 rcpt_counts[user] = c;
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174 }
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175 else {
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176 c = ++((*i).second);
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177 }
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178 pthread_mutex_unlock(&rate_mutex);
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179 return c;
136
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180 }
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181
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182 ////////////////////////////////////////////////
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183 // helper to discard the strings held by a context_map
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184 //
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185 void discard(context_map &cm);
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186 void discard(context_map &cm) {
192
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187 for (context_map::iterator i=cm.begin(); i!=cm.end(); i++) {
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188 const char *x = (*i).first;
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189 free((void*)x);
192
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190 }
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191 cm.clear();
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192 }
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193
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194
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195 ////////////////////////////////////////////////
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196 // helper to register a string in a context_map
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197 //
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198 void register_string(context_map &cm, const char *name, CONTEXT *con);
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199 void register_string(context_map &cm, const char *name, CONTEXT *con) {
192
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200 context_map::iterator i = cm.find(name);
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201 if (i != cm.end()) return;
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202 char *x = strdup(name);
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203 cm[x] = con;
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204 }
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205
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206
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207 ////////////////////////////////////////////////
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208 // disconnect the fd from the dns resolver process
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209 //
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210 void my_disconnect(int sock, bool decrement = true);
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211 void my_disconnect(int sock, bool decrement) {
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212 if (sock != NULL_SOCKET) {
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213 if (decrement) {
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214 pthread_mutex_lock(&fd_pool_mutex);
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215 resolver_sock_count--;
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216 pthread_mutex_unlock(&fd_pool_mutex);
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217 }
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218 shutdown(sock, SHUT_RDWR);
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219 close(sock);
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220 }
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221 }
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222
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223
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224 ////////////////////////////////////////////////
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225 // return fd connected to the dns resolver process
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226 //
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227 int my_connect();
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228 int my_connect() {
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229 // if we have had recent errors, don't even try to open the socket
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230 if ((time(NULL) - last_error_time) < ERROR_SOCKET_TIME) return NULL_SOCKET;
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231
192
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232 // nothing recent, maybe this time it will work
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233 int sock = NULL_SOCKET;
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234 sockaddr_un server;
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235 memset(&server, '\0', sizeof(server));
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236 server.sun_family = AF_UNIX;
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237 strncpy(server.sun_path, resolver_port, sizeof(server.sun_path)-1);
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238 sock = socket(AF_UNIX, SOCK_STREAM, 0);
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239 if (sock != NULL_SOCKET) {
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240 bool rc = (connect(sock, (sockaddr *)&server, sizeof(server)) == 0);
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241 if (!rc) {
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242 my_disconnect(sock, false);
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243 sock = NULL_SOCKET;
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244 last_error_time = time(NULL);
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245 }
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246 }
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247 else last_error_time = time(NULL);
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248 if (sock != NULL_SOCKET) {
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249 pthread_mutex_lock(&fd_pool_mutex);
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250 resolver_sock_count++;
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251 pthread_mutex_unlock(&fd_pool_mutex);
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252 }
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253 return sock;
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254 }
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255
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256
236
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257 ////////////////////////////////////////////////
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258 // ask a dns question and get an A record answer - we don't try
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259 // very hard, just using the default resolver retry settings.
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260 // If we cannot get an answer, we just accept the mail.
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261 //
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262 //
242
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263 int32_t dns_interface(mlfiPriv &priv, const char *question, bool maybe_ip, ns_map *nameservers);
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264 int32_t dns_interface(mlfiPriv &priv, const char *question, bool maybe_ip, ns_map *nameservers) {
236
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265 // tell sendmail we are still working
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266 #if _FFR_SMFI_PROGRESS
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267 if (priv.eom) smfi_progress(priv.ctx);
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268 #endif
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269
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270 // this part can be done without locking the resolver mutex. Each
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271 // milter thread is talking over its own socket to a separate resolver
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272 // process, which does the actual dns resolution.
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273 if (priv.err) return 0; // cannot ask more questions on this socket.
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274 if (maybe_ip) {
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275 // might be a bare ip address, try this first to avoid dns lookups that may not be needed
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276 in_addr ip;
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277 if (inet_aton(question, &ip)) {
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278 return (int32_t)ip.s_addr;
236
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279 }
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280 }
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281 int n = strlen(question);
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282 if (question[n-1] == '.') {
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283 priv.my_write(question, n+1); // write the question including the null terminator
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284 }
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285 else {
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286 priv.my_write(question, n); // write the question
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287 priv.my_write(".", 2); // and the fully qualified . terminator and null string terminator
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288 }
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289 glommer glom;
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290 char *buf = (char *)&glom;
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291 priv.my_read(buf, sizeof(glom.length));
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292 buf += sizeof(glom.length);
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293 #ifdef RESOLVER_DEBUG
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294 char text[1000];
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295 snprintf(text, sizeof(text), "dns_interface() wrote question %s and has answer length %d", question, glom.length);
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296 my_syslog(text);
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297 #endif
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298 if (glom.length == 0) return 0;
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299 if (glom.length > sizeof(glom.answer)) {
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300 priv.err = true;
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301 return 0; // cannot process overlarge answers
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302 }
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303 priv.my_read(buf, glom.length);
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304
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diff changeset
305 #ifdef NS_PACKETSZ
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306 // now we need to lock the resolver mutex to keep the milter threads from
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307 // stepping on each other while parsing the dns answer.
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308 int ret_address = 0;
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309 pthread_mutex_lock(&resolve_mutex);
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310 // parse the answer
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311 ns_msg handle;
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312 ns_rr rr;
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313 if (ns_initparse(glom.answer, glom.length, &handle) == 0) {
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diff changeset
314 // look for ns names
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315 if (nameservers) {
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316 ns_map &ns = *nameservers;
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317 int rrnum = 0;
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318 while (ns_parserr(&handle, ns_s_ns, rrnum++, &rr) == 0) {
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319 if (ns_rr_type(rr) == ns_t_ns) {
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320 char nam[NS_MAXDNAME+1];
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321 char *n = nam;
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322 const u_char *p = ns_rr_rdata(rr);
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323 while (((n-nam) < NS_MAXDNAME) && ((size_t)(p-glom.answer) < glom.length) && *p) {
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324 size_t s = *(p++);
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325 if (s > 191) {
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326 // compression pointer
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327 s = (s-192)*256 + *(p++);
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328 if (s >= glom.length) break; // pointer outside bounds of answer
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329 p = glom.answer + s;
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330 s = *(p++);
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331 }
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332 if (s > 0) {
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333 if ((size_t)(n-nam) >= (NS_MAXDNAME-s)) break; // destination would overflow name buffer
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334 if ((size_t)(p-glom.answer) >= (glom.length-s)) break; // source outside bounds of answer
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335 memcpy(n, p, s);
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336 n += s;
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337 p += s;
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338 *(n++) = '.';
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339 }
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340 }
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341 if (n-nam) n--; // remove trailing .
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342 *n = '\0'; // null terminate it
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343 ns.add(nam, question); // ns host to lookup later
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344 }
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345 }
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346 rrnum = 0;
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347 while (ns_parserr(&handle, ns_s_ar, rrnum++, &rr) == 0) {
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348 if (ns_rr_type(rr) == ns_t_a) {
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349 char* nam = (char*)ns_rr_name(rr);
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350 ns_mapper::iterator i = ns.ns_ip.find(nam);
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351 if (i != ns.ns_ip.end()) {
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352 // we want this ip address
242
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353 int32_t address;
236
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354 memcpy(&address, ns_rr_rdata(rr), sizeof(address));
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355 ns.ns_ip[nam] = address;
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356 }
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357 }
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358 }
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359 }
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360 int rrnum = 0;
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361 while (ns_parserr(&handle, ns_s_an, rrnum++, &rr) == 0) {
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362 if (ns_rr_type(rr) == ns_t_a) {
242
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363 int32_t address;
236
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364 memcpy(&address, ns_rr_rdata(rr), sizeof(address));
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365 ret_address = address;
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366 }
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367 }
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368 }
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369 pthread_mutex_unlock(&resolve_mutex);
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370 #ifdef RESOLVER_DEBUG
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371 snprintf(text, sizeof(text), "dns_interface() found ip %d", ret_address);
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372 my_syslog(text);
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373 #endif
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374 return ret_address;
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375 #else
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376 return glom.answer;
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377 #endif
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378 }
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diff changeset
379
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diff changeset
380
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381 ////////////////////////////////////////////////
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382 // lookup the domain name part of a hostname on the uribl
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383 //
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384 // if we find part of the hostname on the uribl, return
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385 // true and point found to the part of the hostname that we found
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diff changeset
386 // as a string registered in hosts.
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387 // otherwise, return false and preserve the value of found.
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388 //
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diff changeset
389 bool uriblookup(mlfiPriv &priv, string_set &hosts, const char *hostname, const char *top, const char *&found) ;
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390 bool uriblookup(mlfiPriv &priv, string_set &hosts, const char *hostname, const char *top, const char *&found) {
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391 // top is pointer to '.' char at end of base domain, or null for ip address form
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392 // so for hostname of www.fred.mydomain.co.uk
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diff changeset
393 // top points to-----------------------^
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diff changeset
394 // and we end up looking at only mydomain.co.uk, ignoring the www.fred stuff
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diff changeset
395 char buf[maxlen];
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diff changeset
396 if (top) {
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diff changeset
397 // add one more component
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diff changeset
398 const char *x = (const char *)memrchr(hostname, '.', top-hostname);
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diff changeset
399 if (x) hostname = x+1;
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400 }
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diff changeset
401 snprintf(buf, sizeof(buf), "%s.%s.", hostname, priv.uribl_suffix);
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diff changeset
402 if (dns_interface(priv, buf, false, NULL)) {
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diff changeset
403 if (debug_syslog > 2) {
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diff changeset
404 char tmp[maxlen];
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diff changeset
405 snprintf(tmp, sizeof(tmp), "found %s on %s", hostname, priv.uribl_suffix);
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diff changeset
406 my_syslog(tmp);
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diff changeset
407 }
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diff changeset
408 found = register_string(hosts, hostname);
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diff changeset
409 return true;
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diff changeset
410 }
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diff changeset
411 return false;
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parents: 235
diff changeset
412 }
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
413
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
414
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
415 ////////////////////////////////////////////////
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
416 // 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
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 // 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
419 // 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
420 // 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
421 //
c0d2e99c0a1d Add surbl checks on 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 // 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
423 // 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
424 // 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
425 // 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
426 //
c0d2e99c0a1d Add surbl checks on 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 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
428 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
429 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
430 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
431 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
432 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
433 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
434 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
435 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
436 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
437 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
438 // 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
439 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
440 }
c0d2e99c0a1d Add surbl checks on 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
c0d2e99c0a1d Add surbl checks on 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 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
443 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
444 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
445 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
446
c0d2e99c0a1d Add surbl checks on 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 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
448 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
449 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
450 // 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
451 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
452
c0d2e99c0a1d Add surbl checks on 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 // 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
454 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
455 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
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 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
458 }
c0d2e99c0a1d Add surbl checks on 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 // 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
460 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
461 }
c0d2e99c0a1d Add surbl checks on 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 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
463 }
c0d2e99c0a1d Add surbl checks on 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
c0d2e99c0a1d Add surbl checks on 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
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
466 mlfiPriv::mlfiPriv() {
192
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carl
parents: 191
diff changeset
467 pthread_mutex_lock(&config_mutex);
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carl
parents: 191
diff changeset
468 pc = config;
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carl
parents: 191
diff changeset
469 pc->reference_count++;
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carl
parents: 191
diff changeset
470 pthread_mutex_unlock(&config_mutex);
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carl
parents: 191
diff changeset
471 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
472 ctx = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
473 eom = false;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
474 ip = 0;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
475 helo = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
476 mailaddr = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
477 queueid = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
478 authenticated = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
479 client_name = NULL;
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
480 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
481 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
482 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
483 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
484 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
485 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
486 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
487 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
488 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
489 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
490 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
491 memory = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
492 scanner = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
493 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
494 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
495 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
496 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
497 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
498 assassin = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
499 dccifd = NULL;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
500 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
501
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
502 mlfiPriv::~mlfiPriv() {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
503 return_fd();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
504 pthread_mutex_lock(&config_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
505 pc->reference_count--;
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carl
parents: 191
diff changeset
506 bool last = (!pc->reference_count) && (pc != config);
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carl
parents: 191
diff changeset
507 pthread_mutex_unlock(&config_mutex);
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carl
parents: 191
diff changeset
508 if (last) delete pc; // free this config, since we were the last reference to it
214
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Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
509 if (helo) free((void*)helo);
192
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carl
parents: 191
diff changeset
510 reset(true);
94
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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 void mlfiPriv::reset(bool final) {
194
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carl
parents: 193
diff changeset
514 while (!delayer.empty()) {
231
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Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
515 DELAYWHITEP dwp = delayer.front();
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Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
516 const char *loto = dwp->get_loto();
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Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
517 if (loto) free((void*)loto);
193
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carl
parents: 192
diff changeset
518 delete dwp;
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carl
parents: 192
diff changeset
519 delayer.pop_front();
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carl
parents: 192
diff changeset
520 }
214
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Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
521 if (mailaddr) free((void*)mailaddr);
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
522 if (queueid) free((void*)queueid);
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
523 if (authenticated) free((void*)authenticated);
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
524 if (client_name) free((void*)client_name);
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
525 discard(hosts_uribl);
192
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carl
parents: 191
diff changeset
526 delayer.clear();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
527 discard(env_to);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
528 if (memory) delete memory;
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carl
parents: 191
diff changeset
529 if (scanner) delete scanner;
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carl
parents: 191
diff changeset
530 if (assassin) delete assassin;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
531 if (dccifd) delete dccifd;
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carl
parents: 191
diff changeset
532 if (!final) {
230
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
533 ctx = NULL;
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
534 eom = false;
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
535 mailaddr = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
536 queueid = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
537 authenticated = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
538 client_name = NULL;
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
539 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
540 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
541 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
542 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
543 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
544 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
545 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
546 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
547 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
548 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
549 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
550 memory = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
551 scanner = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
552 content_suffix = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
553 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
554 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
555 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
556 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
557 assassin = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
558 dccifd = NULL;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
559 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
560 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
561
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
562 void mlfiPriv::get_fd() {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
563 err = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
564 fd = NULL_SOCKET;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
565 int result = pthread_mutex_lock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
566 if (!result) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
567 std::set<int>::iterator i;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
568 i = fd_pool.begin();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
569 if (i != fd_pool.end()) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
570 // have at least one fd in the pool
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
571 err = false;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
572 fd = *i;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
573 fd_pool.erase(fd);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
574 resolver_pool_size--;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
575 pthread_mutex_unlock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
576 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
577 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
578 // pool is empty, get a new fd
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
579 pthread_mutex_unlock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
580 fd = my_connect();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
581 err = (fd == NULL_SOCKET);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
582 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
583 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
584 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
585 // cannot lock the pool, just get a new fd
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
586 fd = my_connect();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
587 err = (fd == NULL_SOCKET);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
588 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
589 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
590
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
591 void mlfiPriv::return_fd() {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
592 if (err) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
593 // 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
594 my_disconnect(fd);
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 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
597 int result = pthread_mutex_lock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
598 if (!result) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
599 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
600 // return the fd to the pool
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
601 fd_pool.insert(fd);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
602 resolver_pool_size++;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
603 pthread_mutex_unlock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
604 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
605 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
606 // 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
607 // 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
608 pthread_mutex_unlock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
609 my_disconnect(fd);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
610 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
611 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
612 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
613 // 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
614 my_disconnect(fd);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
615 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
616 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
617 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
618
177
a4d313c2460b start embedded dcc filtering
carl
parents: 174
diff changeset
619 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
620 if (err) return 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
621 size_t rs = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
622 while (len) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
623 size_t ws = write(fd, buf, len);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
624 if (ws > 0) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
625 rs += ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
626 len -= ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
627 buf += ws;
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 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
630 // peer closed the socket!
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
631 rs = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
632 err = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
633 break;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
634 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
635 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
636 return rs;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
637 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
638
177
a4d313c2460b start embedded dcc filtering
carl
parents: 174
diff changeset
639 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
640 if (err) return 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
641 size_t rs = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
642 while (len) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
643 size_t ws = read(fd, buf, len);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
644 if (ws > 0) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
645 rs += ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
646 len -= ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
647 buf += ws;
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 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
650 // peer closed the socket!
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
651 rs = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
652 err = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
653 break;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
654 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
655 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
656 return rs;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
657 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
658
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
659 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
660 if (!memory) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
661 // first recipient that needs content filtering sets
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
662 // some of the content filtering parameters
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
663 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
664 scanner = new url_scanner(memory);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
665 content_suffix = con.get_content_suffix();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
666 content_message = con.get_content_message();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
667 uribl_suffix = con.get_uribl_suffix();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
668 uribl_message = con.get_uribl_message();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
669 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
670 // 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
671 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
672 if (helo) {
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
673 helo_uribl = check_uribl(*this, hosts_uribl, helo, host_uribl);
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
674 if (client_name && !helo_uribl) {
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
675 client_uribl = check_uribl(*this, hosts_uribl, client_name, host_uribl);
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
676 if (mailaddr && !client_uribl) {
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
677 const char *f = strchr(mailaddr, '@');
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
678 if (f) from_uribl = check_uribl(*this, hosts_uribl, f+1, host_uribl);
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
679 }
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
680 }
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
681 }
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
682 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
683 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
684 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
685
186
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
686
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
687 mlfiPriv* fetch_priv_from_ctx(SMFICTX *ctx);
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
688 mlfiPriv* fetch_priv_from_ctx(SMFICTX *ctx)
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
689 {
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
690 mlfiPriv *priv = (struct mlfiPriv *)smfi_getpriv(ctx);
187
f0eda59e8afd fix null pointer dereference from missing HELO command
carl
parents: 186
diff changeset
691 priv->ctx = ctx;
186
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
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parents: 185
diff changeset
692 return priv;
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
693 }
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carl
parents: 185
diff changeset
694 #define MLFIPRIV fetch_priv_from_ctx(ctx)
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
695
94
e107ade3b1c0 fix dos line terminators
carl
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diff changeset
696
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
697
e107ade3b1c0 fix dos line terminators
carl
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diff changeset
698 ////////////////////////////////////////////////
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
699 // syslog a message
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
700 //
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
701 void my_syslog(mlfiPriv *priv, const char *text) {
192
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diff changeset
702 char buf[maxlen];
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diff changeset
703 if (priv) {
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diff changeset
704 snprintf(buf, sizeof(buf), "%s: %s", priv->queueid, text);
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diff changeset
705 text = buf;
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diff changeset
706 }
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diff changeset
707 if (use_syslog) {
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diff changeset
708 pthread_mutex_lock(&syslog_mutex);
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diff changeset
709 if (!syslog_opened) {
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diff changeset
710 openlog("dnsbl", LOG_PID, LOG_MAIL);
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diff changeset
711 syslog_opened = true;
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diff changeset
712 }
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diff changeset
713 syslog(LOG_NOTICE, "%s", text);
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diff changeset
714 pthread_mutex_unlock(&syslog_mutex);
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diff changeset
715 }
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diff changeset
716 else {
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diff changeset
717 printf("%s \n", text);
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diff changeset
718 }
94
e107ade3b1c0 fix dos line terminators
carl
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diff changeset
719 }
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carl
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diff changeset
720
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
721 void my_syslog(mlfiPriv *priv, const string text) {
192
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722 if (debug_syslog > 3) {
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diff changeset
723 char buf[maxlen];
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diff changeset
724 strncpy(buf, text.c_str(), sizeof(buf));
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725 buf[maxlen-1] = '\0'; // ensure null termination
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diff changeset
726 my_syslog(priv, buf);
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727 }
163
97d7da45fe2a spamassassin changes
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parents: 162
diff changeset
728 }
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
729
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
730 void my_syslog(const char *text) {
192
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diff changeset
731 my_syslog(NULL, text);
94
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diff changeset
732 }
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carl
parents: 92
diff changeset
733
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
734
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diff changeset
735 ////////////////////////////////////////////////
192
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diff changeset
736 // read a resolver request from the socket, process it, and
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diff changeset
737 // write the result back to the socket.
94
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parents: 92
diff changeset
738
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carl
parents: 92
diff changeset
739 void process_resolver_requests(int socket);
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
740 void process_resolver_requests(int socket) {
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diff changeset
741 #ifdef NS_MAXDNAME
192
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diff changeset
742 char question[NS_MAXDNAME];
94
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diff changeset
743 #else
192
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diff changeset
744 char question[1000];
94
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diff changeset
745 #endif
192
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diff changeset
746 glommer glom;
94
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carl
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diff changeset
747
192
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parents: 191
diff changeset
748 int maxq = sizeof(question);
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parents: 191
diff changeset
749 while (true) {
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diff changeset
750 // read a question
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diff changeset
751 int rs = 0;
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diff changeset
752 while (rs < maxq) {
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diff changeset
753 int ns = read(socket, question+rs, maxq-rs);
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parents: 191
diff changeset
754 if (ns > 0) {
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parents: 191
diff changeset
755 rs += ns;
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diff changeset
756 if (question[rs-1] == '\0') {
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parents: 191
diff changeset
757 // last byte read was the null terminator, we are done
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parents: 191
diff changeset
758 break;
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parents: 191
diff changeset
759 }
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diff changeset
760 }
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parents: 191
diff changeset
761 else {
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parents: 191
diff changeset
762 // peer closed the socket
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parents: 191
diff changeset
763 #ifdef RESOLVER_DEBUG
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parents: 191
diff changeset
764 my_syslog("process_resolver_requests() peer closed socket while reading question");
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parents: 191
diff changeset
765 #endif
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diff changeset
766 shutdown(socket, SHUT_RDWR);
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parents: 191
diff changeset
767 close(socket);
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diff changeset
768 return;
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parents: 191
diff changeset
769 }
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parents: 191
diff changeset
770 }
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parents: 191
diff changeset
771 question[rs-1] = '\0'; // ensure null termination
94
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parents: 92
diff changeset
772
192
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parents: 191
diff changeset
773 // find the answer
94
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diff changeset
774 #ifdef NS_PACKETSZ
192
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diff changeset
775 #ifdef RESOLVER_DEBUG
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diff changeset
776 char text[1000];
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diff changeset
777 snprintf(text, sizeof(text), "process_resolver_requests() has a question %s", question);
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parents: 191
diff changeset
778 my_syslog(text);
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parents: 191
diff changeset
779 #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
780 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
781 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
782 else glom.length = (size_t)res_result;
94
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diff changeset
783 #else
192
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diff changeset
784 glom.length = sizeof(glom.answer);
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parents: 191
diff changeset
785 glom.answer = 0;
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carl
parents: 191
diff changeset
786 struct hostent *host = gethostbyname(question);
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carl
parents: 191
diff changeset
787 if (host && (host->h_addrtype == AF_INET)) {
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parents: 191
diff changeset
788 memcpy(&glom.answer, host->h_addr, sizeof(glom.answer));
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parents: 191
diff changeset
789 }
94
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diff changeset
790 #endif
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parents: 92
diff changeset
791
192
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parents: 191
diff changeset
792 // write the answer
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parents: 191
diff changeset
793 char *buf = (char *)&glom;
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parents: 191
diff changeset
794 int len = glom.length + sizeof(glom.length);
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parents: 191
diff changeset
795 #ifdef RESOLVER_DEBUG
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parents: 191
diff changeset
796 snprintf(text, sizeof(text), "process_resolver_requests() writing answer length %d for total %d", glom.length, len);
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parents: 191
diff changeset
797 my_syslog(text);
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parents: 191
diff changeset
798 #endif
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parents: 191
diff changeset
799 int ws = 0;
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parents: 191
diff changeset
800 while (len > ws) {
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parents: 191
diff changeset
801 int ns = write(socket, buf+ws, len-ws);
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parents: 191
diff changeset
802 if (ns > 0) {
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parents: 191
diff changeset
803 ws += ns;
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diff changeset
804 }
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parents: 191
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805 else {
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parents: 191
diff changeset
806 // peer closed the socket!
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parents: 191
diff changeset
807 #ifdef RESOLVER_DEBUG
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parents: 191
diff changeset
808 my_syslog("process_resolver_requests() peer closed socket while writing answer");
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parents: 191
diff changeset
809 #endif
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diff changeset
810 shutdown(socket, SHUT_RDWR);
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parents: 191
diff changeset
811 close(socket);
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parents: 191
diff changeset
812 return;
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parents: 191
diff changeset
813 }
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parents: 191
diff changeset
814 }
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parents: 191
diff changeset
815 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
816 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
817
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
818
e107ade3b1c0 fix dos line terminators
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parents: 92
diff changeset
819 ////////////////////////////////////////////////
192
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parents: 191
diff changeset
820 // check a single dnsbl
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
821 //
242
d8ee4c97b9ab 64 bit fixes for libresolv.a
Carl Byington <carl@five-ten-sg.com>
parents: 238
diff changeset
822 bool check_single(mlfiPriv &priv, int32_t ip, const char *suffix);
d8ee4c97b9ab 64 bit fixes for libresolv.a
Carl Byington <carl@five-ten-sg.com>
parents: 238
diff changeset
823 bool check_single(mlfiPriv &priv, int32_t ip, const char *suffix) {
192
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parents: 191
diff changeset
824 // make a dns question
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parents: 191
diff changeset
825 const u_char *src = (const u_char *)&ip;
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parents: 191
diff changeset
826 if (src[0] == 127) return false; // don't do dns lookups on localhost
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carl
parents: 191
diff changeset
827 if (src[0] == 10) return false; // don't do dns lookups on rfc1918 space
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carl
parents: 191
diff changeset
828 if ((src[0] == 192) && (src[1] == 168)) return false;
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carl
parents: 191
diff changeset
829 if ((src[0] == 172) && (16 <= src[1]) && (src[1] <= 31)) return false;
94
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parents: 92
diff changeset
830 #ifdef NS_MAXDNAME
192
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parents: 191
diff changeset
831 char question[NS_MAXDNAME];
94
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diff changeset
832 #else
192
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diff changeset
833 char question[1000];
94
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diff changeset
834 #endif
192
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parents: 191
diff changeset
835 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
836 // ask the question, if we get an A record it implies a blacklisted ip address
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carl
parents: 191
diff changeset
837 return dns_interface(priv, question, false, NULL);
94
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carl
parents: 92
diff changeset
838 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
839
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
840
e107ade3b1c0 fix dos line terminators
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parents: 92
diff changeset
841 ////////////////////////////////////////////////
192
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carl
parents: 191
diff changeset
842 // check a single dnsbl
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
843 //
242
d8ee4c97b9ab 64 bit fixes for libresolv.a
Carl Byington <carl@five-ten-sg.com>
parents: 238
diff changeset
844 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
845 bool check_single(mlfiPriv &priv, int32_t ip, DNSBL &bl) {
192
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parents: 191
diff changeset
846 return check_single(priv, ip, bl.suffix);
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
847 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
848
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
849
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
850 ////////////////////////////////////////////////
192
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carl
parents: 191
diff changeset
851 // check the dnsbls specified for this recipient
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
852 //
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
853 bool check_dnsbl(mlfiPriv &priv, dnsblp_list &dnsbll, DNSBLP &rejectlist);
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
854 bool check_dnsbl(mlfiPriv &priv, dnsblp_list &dnsbll, DNSBLP &rejectlist) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
855 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
856 DNSBLP dp = *i; // non null by construction
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
857 bool st;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
858 map<DNSBLP, bool>::iterator f = priv.checked.find(dp);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
859 if (f == priv.checked.end()) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
860 // have not checked this list yet
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
861 st = check_single(priv, priv.ip, *dp);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
862 rejectlist = dp;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
863 priv.checked[dp] = st;
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carl
parents: 191
diff changeset
864 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
865 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
866 st = (*f).second;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
867 rejectlist = (*f).first;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
868 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
869 if (st) return st;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
870 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
871 return false;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
872 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
873
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
874
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
875 ////////////////////////////////////////////////
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
876 // check the hosts from the body against the content filter and uribl dnsbls
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
877 //
124
ea6f9c812faa put hostname in smtp message for uribl style lookups
carl
parents: 123
diff changeset
878 //
242
d8ee4c97b9ab 64 bit fixes for libresolv.a
Carl Byington <carl@five-ten-sg.com>
parents: 238
diff changeset
879 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
880 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
881 found = NULL; // normally ip address style
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
882 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
883 string_set &hosts = priv.memory->get_hosts();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
884 string_set &ignore = *priv.content_host_ignore;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
885
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
886 int count = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
887 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
888 int32_t_set ips;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
889 ns_map nameservers;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
890 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
891 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
892
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
893 // 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
894 string_set::iterator j = ignore.find(host);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
895 if (j != ignore.end()) continue;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
896
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
897 // 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
898 if ((cnt > limit) && (limit > 0) && random) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
899 int r = rand() % cnt;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
900 if (r >= limit) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
901 if (debug_syslog > 2) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
902 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
903 snprintf(buf, sizeof(buf), "host %s skipped", host);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
904 my_syslog(&priv, buf);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
905 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
906 continue;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
907 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
908 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
909 count++;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
910 ip = dns_interface(priv, host, true, &nameservers);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
911 if (debug_syslog > 2) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
912 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
913 if (ip) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
914 char adr[sizeof "255.255.255.255 "];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
915 adr[0] = '\0';
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
916 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
917 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
918 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
919 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
920 snprintf(buf, sizeof(buf), "host %s not found", host);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
921 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
922 my_syslog(&priv, buf);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
923 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
924 if (ip) {
242
d8ee4c97b9ab 64 bit fixes for libresolv.a
Carl Byington <carl@five-ten-sg.com>
parents: 238
diff changeset
925 int32_t_set::iterator i = ips.find(ip);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
926 if (i == ips.end()) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
927 // we haven't looked this up yet
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
928 ips.insert(ip);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
929 // check dnsbl style list
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
930 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
931 msg = priv.content_message;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
932 return true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
933 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
934 // Check uribl & surbl style list
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
935 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
936 msg = priv.uribl_message;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
937 return true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
938 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
939 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
940 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
941 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
942 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
943 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
944 count++;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
945 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
946 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
947 ip = (*i).second;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
948 if (!ip) ip = dns_interface(priv, host, false, NULL);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
949 if (debug_syslog > 2) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
950 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
951 if (ip) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
952 char adr[sizeof "255.255.255.255 "];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
953 adr[0] = '\0';
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
954 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
955 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
956 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
957 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
958 snprintf(buf, sizeof(buf), "ns %s not found", host);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
959 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
960 my_syslog(&priv, buf);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
961 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
962 if (ip) {
242
d8ee4c97b9ab 64 bit fixes for libresolv.a
Carl Byington <carl@five-ten-sg.com>
parents: 238
diff changeset
963 int32_t_set::iterator i = ips.find(ip);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
964 if (i == ips.end()) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
965 ips.insert(ip);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
966 if (check_single(priv, ip, priv.content_suffix)) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
967 msg = priv.content_message;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
968 string_map::iterator j = nameservers.ns_host.find(host);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
969 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
970 const char *refer = (*j).second;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
971 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
972 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
973 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
974 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
975 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
976 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
977 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
978 return true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
979 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
980 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
981 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
982 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
983 return false;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
984 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
985
127
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 126
diff changeset
986
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
987 ////////////////////////////////////////////////
127
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 126
diff changeset
988 //
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 126
diff changeset
989 // 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
990 // enclosed in <>. I think older versions of sendmail supplied the <>
127
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 126
diff changeset
991 // 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
992 // 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
993 // 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
994 // 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
995 // 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
996 //
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
997 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
998 const char *to_lower_string(const char *email) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
999 int n = strlen(email);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1000 if (email[0] == '<') {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1001 // assume it also ends with >
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1002 n -= 2;
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carl
parents: 191
diff changeset
1003 if (n < 1) return strdup(email); // return "<>"
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carl
parents: 191
diff changeset
1004 email++;
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carl
parents: 191
diff changeset
1005 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1006 if ((email[0] == '\'') && (email[n-1] == '\'') && (n > 2)) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1007 n -= 2;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1008 email++;
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carl
parents: 191
diff changeset
1009 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1010 char *key = strdup(email);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1011 key[n] = '\0';
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carl
parents: 191
diff changeset
1012 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
1013 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
1014 // might have srs coding to be removed
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Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1015 const int nmatch = 6;
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Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1016 regmatch_t match[nmatch];
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Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1017 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
1018 int s4 = match[4].rm_so; // domain
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Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1019 int e4 = match[4].rm_eo;
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Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1020 int s5 = match[5].rm_so; // user
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Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1021 int e5 = match[5].rm_eo;
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Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1022 if ((s4 != -1) && (s5 != -1)) {
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1023 char *newkey = strdup(key); // large enough
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Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1024 key[e4] = '\0';
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1025 key[e5] = '\0';
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1026 strcpy(newkey, key+s5); // user
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Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1027 strcat(newkey, "@"); // @
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Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1028 strcat(newkey, key+s4); // domain
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1029 free(key);
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Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1030 key = newkey;
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1031 }
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1032 }
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1033 }
246
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1034 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
1035 // 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
1036 const int nmatch = 3;
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1037 regmatch_t match[nmatch];
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1038 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
1039 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
1040 if (s2 != -1) {
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1041 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
1042 free(key);
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1043 key = newkey;
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1044 }
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1045 }
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1046 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1047 return key;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1048 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1049
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1050
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1051 ////////////////////////////////////////////////
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1052 // start of sendmail milter interfaces
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1053 //
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1054 sfsistat mlfi_connect(SMFICTX *ctx, char *hostname, _SOCK_ADDR *hostaddr)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1055 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1056 // allocate some private memory
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1057 mlfiPriv *priv = new mlfiPriv;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1058 if (hostaddr->sa_family == AF_INET) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1059 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
1060 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1061 // save the private data
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carl
parents: 191
diff changeset
1062 smfi_setpriv(ctx, (void*)priv);
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1063
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1064 // continue processing
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1065 return SMFIS_CONTINUE;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1066 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1067
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1068 sfsistat mlfi_helo(SMFICTX * ctx, char *helohost)
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1069 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1070 mlfiPriv &priv = *MLFIPRIV;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1071 priv.helo = strdup(helohost);
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carl
parents: 191
diff changeset
1072 return SMFIS_CONTINUE;
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1073 }
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1074
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1075 sfsistat mlfi_envfrom(SMFICTX *ctx, char **from)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1076 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1077 mlfiPriv &priv = *MLFIPRIV;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1078 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
1079 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
1080 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
1081 priv.client_name = smfi_getsymval(ctx, (char*)"_");
191
2a67d31099c3 fix null pointer dereference from missing HELO command
carl
parents: 190
diff changeset
1082 if (!priv.helo) priv.helo = strdup("unknown");
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1083 if (priv.authenticated) priv.authenticated = strdup(priv.authenticated);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1084 if (priv.client_name) priv.client_name = strdup(priv.client_name);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1085 if (spamc != spamc_empty) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1086 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
1087 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1088 if (dccifd_port) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1089 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
1090 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1091 return SMFIS_CONTINUE;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1092 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1093
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1094 sfsistat mlfi_envrcpt(SMFICTX *ctx, char **rcpt)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1095 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1096 DNSBLP rejectlist = NULL; // list that caused the reject
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1097 mlfiPriv &priv = *MLFIPRIV;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1098 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
1099 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
1100 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
1101 bool self = (strcmp(loto, priv.mailaddr) == 0);
174
da0c41b9f672 don't whitelist addresses with embedded spaces
carl
parents: 173
diff changeset
1102
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1103 // 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
1104 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
1105 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
1106 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1107 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1108 // 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
1109 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
1110 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
1111 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
1112 // tell spam assassin and dccifd about this recipient
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1113 if (priv.assassin) priv.assassin->mlfi_envrcpt(ctx, loto);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1114 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
1115 // loto sending a reply back to priv.mailaddr
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1116 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
1117 const char *replyvalue = con2.find_from(loto);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1118 if (debug_syslog > 1) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1119 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1120 char msg[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1121 snprintf(msg, sizeof(msg), "from <%s> to <%s> using context %s state %s reply state %s", priv.mailaddr, loto, con.get_full_name(buf,maxlen), fromvalue, replyvalue);
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carl
parents: 191
diff changeset
1122 my_syslog(&priv, msg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1123 }
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1124 free((void*)loto);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1125 status st;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1126 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
1127 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
1128 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1129 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1130 if (priv.authenticated) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1131 int c = incr_rcpt_count(priv.authenticated);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1132 int l = dc.default_context->find_rate(priv.authenticated);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1133 if (debug_syslog > 1) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1134 char msg[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1135 snprintf(msg, sizeof(msg), "authenticated id %s (%d recipients, %d limit)", priv.authenticated, c, l);
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carl
parents: 191
diff changeset
1136 my_syslog(&priv, msg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1137 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1138 if (c > l) {
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1139 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
1140 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1141 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1142 st = white;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1143 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1144 else if (fromvalue == token_black) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1145 st = black;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1146 }
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
1147 else if ((fromvalue == token_white) && !self) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1148 st = white;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1149 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1150 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1151 // check the dns based lists
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1152 st = (check_dnsbl(priv, con.get_dnsbl_list(), rejectlist)) ? reject : oksofar;
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 (st == reject) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1155 // reject the recipient based on some dnsbl
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1156 char adr[sizeof "255.255.255.255 "];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1157 adr[0] = '\0';
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1158 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
1159 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1160 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
1161 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
1162 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1163 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1164 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
1165 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
1166 if (msg) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1167 // reject the recipient based on generic reverse dns
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1168 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1169 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
1170 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
1171 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1172 }
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 if (st == black) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1175 // 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
1176 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
1177 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1178 }
203
92a5c866bdfa Verify from/to pairs even if they might be explicitly whitelisted.
Carl Byington <carl@five-ten-sg.com>
parents: 194
diff changeset
1179 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
1180 // 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
1181 const char *loto = to_lower_string(rcptaddr);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1182 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
1183 free((void*)loto);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1184 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
1185 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
1186 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1187 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1188 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1189 // 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
1190 // if needed to ensure we can accept replies
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1191 loto = to_lower_string(rcptaddr);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1192 WHITELISTERP w = con2.find_autowhite(loto, priv.mailaddr);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1193 // check if local part is too big
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1194 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
1195 const char *p = strchr(loto, '@');
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1196 int len = (p) ? p-loto : max_local_size;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1197 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
1198 // record it if we have a whitelister
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1199 if (w) {
231
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1200 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
1201 priv.delayer.push_back(dwp);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1202 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1203 else {
231
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1204 free((void*)loto); // or we free it here
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1205 }
179
8b86a894514d embedded dcc filtering
carl
parents: 178
diff changeset
1206
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1207 // accept the recipient
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1208 if (!con.get_content_filtering()) st = white;
179
8b86a894514d embedded dcc filtering
carl
parents: 178
diff changeset
1209
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1210 if (st == oksofar) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1211 // remember first content filtering context
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1212 if (con.get_content_filtering()) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1213 if (!priv.content_context) priv.content_context = &con;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1214 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
1215 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
1216 return SMFIS_TEMPFAIL;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1217 }
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
1218 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
1219 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
1220 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
1221 // 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
1222 if (priv.helo_uribl) {
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
1223 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
1224 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
1225 }
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
1226 // 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
1227 if (priv.client_uribl) {
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
1228 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
1229 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
1230 }
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
1231 // 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
1232 if (priv.from_uribl) {
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
1233 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
1234 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
1235 }
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
1236 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
1237 char buf[maxlen];
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
1238 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
1239 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
1240 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
1241 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1242 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1243 // 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
1244 register_string(priv.env_to, rcptaddr, &con);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1245 priv.only_whites = false;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1246 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
1247 (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
1248 priv.want_dccgrey |= (priv.dccifd) && // have dcc interface and
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1249 (con.get_grey()); // want to use it for greylisting
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1250 priv.want_dccbulk |= (priv.dccifd) && // have dcc interface and
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1251 (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
1252 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1253 if (st == white) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1254 priv.have_whites = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1255 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1256 return SMFIS_CONTINUE;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1257 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1258
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1259 sfsistat mlfi_header(SMFICTX* ctx, char* headerf, char* headerv)
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1260 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1261 mlfiPriv &priv = *MLFIPRIV;
231
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1262 // 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
1263 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
1264 ((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
1265 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
1266 }
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
1267
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1268 // other headers are only needed for content filtering
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1269 if (priv.authenticated) return SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1270 if (priv.only_whites) return SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1271 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
1272 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
1273 return SMFIS_CONTINUE;
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1274 }
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1275
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1276 sfsistat mlfi_eoh(SMFICTX* ctx)
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1277 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1278 mlfiPriv &priv = *MLFIPRIV;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1279 // delayed autowhitelisting
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1280 while (!priv.delayer.empty()) {
231
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1281 DELAYWHITEP dwp = priv.delayer.front();
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1282 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
1283 if (priv.allow_autowhitelisting) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1284 WHITELISTERP w = dwp->get_w();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1285 CONTEXTP con2 = dwp->get_con();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1286 if (debug_syslog > 1) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1287 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1288 char msg[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1289 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
1290 my_syslog(&priv, msg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1291 }
231
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1292 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
1293 }
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1294 else {
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1295 if (debug_syslog > 1) {
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1296 char msg[maxlen];
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1297 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
1298 my_syslog(&priv, msg);
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1299 }
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1300 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
1301 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1302 delete dwp;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1303 priv.delayer.pop_front();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1304 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1305 // content filtering
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1306 if (priv.authenticated) return SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1307 if (priv.only_whites) return SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1308 if (priv.want_spamassassin) priv.assassin->mlfi_eoh();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1309 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
1310 return SMFIS_CONTINUE;
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1311 }
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1312
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1313 sfsistat mlfi_body(SMFICTX *ctx, u_char *data, size_t len)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1314 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1315 mlfiPriv &priv = *MLFIPRIV;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1316 if (priv.authenticated) return SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1317 if (priv.only_whites) return SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1318 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
1319 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
1320 priv.scanner->scan(data, len);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1321 return SMFIS_CONTINUE;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1322 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1323
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1324 sfsistat mlfi_eom(SMFICTX *ctx)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1325 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1326 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
1327 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
1328 const char *host = NULL;
242
d8ee4c97b9ab 64 bit fixes for libresolv.a
Carl Byington <carl@five-ten-sg.com>
parents: 238
diff changeset
1329 int32_t ip;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1330 // process end of message
190
004b855c6c1f fix null pointer dereference from missing HELO command
carl
parents: 188
diff changeset
1331 priv.eom = true;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1332 if (priv.authenticated || priv.only_whites) rc = SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1333 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1334 // assert env_to not empty, it contains the
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1335 // non-whitelisted folks that want content filtering
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1336 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
1337 bool grey = false;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1338 int bulk = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1339 if (priv.want_dccgrey || priv.want_dccbulk) priv.dccifd->mlfi_eom(grey, bulk);
178
d6531c702be3 embedded dcc filtering
carl
parents: 177
diff changeset
1340
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1341 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1342 string msg;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1343 string_set alive;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1344 bool random = false;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1345 int limit = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1346 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
1347 const char *rcpt = (*i).first;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1348 CONTEXT &con = *((*i).second);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1349 if (!con.acceptable_content(*priv.memory, score, bulk, msg)) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1350 // bad html tags or excessive hosts or
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1351 // 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
1352 smfi_delrcpt(ctx, (char*)rcpt);
192
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 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1355 alive.insert(rcpt);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1356 random |= con.get_host_random();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1357 limit = max(limit, con.get_host_limit());
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1358 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1359 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1360 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
1361 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
1362 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
1363 const char *found;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1364 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
1365 if (found) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1366 // uribl style
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1367 snprintf(buf, sizeof(buf), fmt, host, found);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1368 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1369 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1370 // dnsbl style
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1371 char adr[sizeof "255.255.255.255 "];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1372 adr[0] = '\0';
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1373 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
1374 snprintf(buf, sizeof(buf), fmt, host, adr);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1375 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1376 msg = string(buf);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1377 rejecting = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1378 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1379 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1380 if (!rejecting) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1381 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
1382 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
1383 rc = SMFIS_TEMPFAIL;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1384 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1385 else rc = SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1386 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1387 else if (!priv.have_whites) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1388 // can reject the entire message
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1389 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
1390 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
1391 rc = SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1392 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1393 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1394 // 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
1395 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
1396 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
1397 smfi_delrcpt(ctx, (char*)rcpt);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1398 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1399 rc = SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1400 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1401 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1402 // reset for a new message on the same connection
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1403 mlfi_abort(ctx);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1404 return rc;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1405 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1406
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1407 sfsistat mlfi_abort(SMFICTX *ctx)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1408 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1409 mlfiPriv &priv = *MLFIPRIV;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1410 priv.reset();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1411 return SMFIS_CONTINUE;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1412 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1413
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1414 sfsistat mlfi_close(SMFICTX *ctx)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1415 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1416 mlfiPriv *priv = MLFIPRIV;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1417 if (!priv) return SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1418 delete priv;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1419 smfi_setpriv(ctx, NULL);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1420 return SMFIS_CONTINUE;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1421 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1422
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1423 struct smfiDesc smfilter =
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1424 {
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1425 (char*)"DNSBL", // filter name
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1426 SMFI_VERSION, // version code -- do not change
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1427 SMFIF_DELRCPT, // flags
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carl
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diff changeset
1428 mlfi_connect, // connection info filter
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carl
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diff changeset
1429 mlfi_helo, // SMTP HELO command filter
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carl
parents: 191
diff changeset
1430 mlfi_envfrom, // envelope sender filter
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carl
parents: 191
diff changeset
1431 mlfi_envrcpt, // envelope recipient filter
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carl
parents: 191
diff changeset
1432 mlfi_header, // header filter
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carl
parents: 191
diff changeset
1433 mlfi_eoh, // end of header
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carl
parents: 191
diff changeset
1434 mlfi_body, // body block filter
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carl
parents: 191
diff changeset
1435 mlfi_eom, // end of message
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carl
parents: 191
diff changeset
1436 mlfi_abort, // message aborted
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parents: 191
diff changeset
1437 mlfi_close, // connection cleanup
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1438 };
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1439
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1440
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1441 ////////////////////////////////////////////////
192
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parents: 191
diff changeset
1442 // reload the config
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1443 //
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1444 CONFIG* new_conf();
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diff changeset
1445 CONFIG* new_conf() {
192
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parents: 191
diff changeset
1446 CONFIG *newc = new CONFIG;
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diff changeset
1447 pthread_mutex_lock(&config_mutex);
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parents: 191
diff changeset
1448 newc->generation = generation++;
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diff changeset
1449 pthread_mutex_unlock(&config_mutex);
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parents: 191
diff changeset
1450 if (debug_syslog) {
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carl
parents: 191
diff changeset
1451 char buf[maxlen];
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diff changeset
1452 snprintf(buf, sizeof(buf), "loading configuration generation %d", newc->generation);
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carl
parents: 191
diff changeset
1453 my_syslog(buf);
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carl
parents: 191
diff changeset
1454 }
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carl
parents: 191
diff changeset
1455 if (load_conf(*newc, "dnsbl.conf")) {
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carl
parents: 191
diff changeset
1456 newc->load_time = time(NULL);
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parents: 191
diff changeset
1457 return newc;
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carl
parents: 191
diff changeset
1458 }
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parents: 191
diff changeset
1459 delete newc;
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diff changeset
1460 return NULL;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1461 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1462
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1463
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1464 ////////////////////////////////////////////////
192
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diff changeset
1465 // thread to watch the old config files for changes
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carl
parents: 191
diff changeset
1466 // and reload when needed.
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parents: 191
diff changeset
1467 // we also clear the SMTP AUTH recipient counts hourly
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1468 //
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1469 extern "C" {void* config_loader(void *arg);}
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1470 void* config_loader(void *arg) {
192
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parents: 191
diff changeset
1471 int loop = 0;
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parents: 191
diff changeset
1472 while (loader_run) {
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diff changeset
1473 sleep(180); // look for modifications every 3 minutes
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diff changeset
1474 if (!loader_run) break;
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parents: 191
diff changeset
1475 loop++;
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diff changeset
1476 if (loop == 20) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
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parents: 191
diff changeset
1477 // three minutes thru each loop, 20 loops per hour
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carl
parents: 191
diff changeset
1478 // clear the recipient counts
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carl
parents: 191
diff changeset
1479 pthread_mutex_lock(&rate_mutex);
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carl
parents: 191
diff changeset
1480 for (rcpt_rates::iterator i=rcpt_counts.begin(); i!=rcpt_counts.end(); i++) {
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carl
parents: 191
diff changeset
1481 (*i).second = 0;
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carl
parents: 191
diff changeset
1482 }
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carl
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diff changeset
1483 pthread_mutex_unlock(&rate_mutex);
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carl
parents: 191
diff changeset
1484 loop = 0;
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carl
parents: 191
diff changeset
1485 }
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carl
parents: 191
diff changeset
1486 CONFIG &dc = *config;
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carl
parents: 191
diff changeset
1487 time_t then = dc.load_time;
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carl
parents: 191
diff changeset
1488 struct stat st;
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carl
parents: 191
diff changeset
1489 bool reload = false;
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carl
parents: 191
diff changeset
1490 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
1491 const char *fn = *i;
192
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carl
parents: 191
diff changeset
1492 if (stat(fn, &st)) reload = true; // file disappeared
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carl
parents: 191
diff changeset
1493 else if (st.st_mtime > then) reload = true; // file modified
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carl
parents: 191
diff changeset
1494 if (reload) break;
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carl
parents: 191
diff changeset
1495 }
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parents: 191
diff changeset
1496 if (reload) {
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carl
parents: 191
diff changeset
1497 CONFIG *newc = new_conf();
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carl
parents: 191
diff changeset
1498 if (newc) {
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carl
parents: 191
diff changeset
1499 // replace the global config pointer
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carl
parents: 191
diff changeset
1500 pthread_mutex_lock(&config_mutex);
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carl
parents: 191
diff changeset
1501 CONFIG *pc = config;
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parents: 191
diff changeset
1502 bool last = pc && (!pc->reference_count);
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carl
parents: 191
diff changeset
1503 config = newc;
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parents: 191
diff changeset
1504 pthread_mutex_unlock(&config_mutex);
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parents: 191
diff changeset
1505 if (last) delete pc; // there were no references to this config
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carl
parents: 191
diff changeset
1506 }
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parents: 191
diff changeset
1507 else {
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carl
parents: 191
diff changeset
1508 // failed to load new config
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carl
parents: 191
diff changeset
1509 my_syslog("failed to load new configuration");
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carl
parents: 191
diff changeset
1510 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
1511 // update the load time on the current config to prevent complaining every 3 minutes
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carl
parents: 191
diff changeset
1512 dc.load_time = time(NULL);
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carl
parents: 191
diff changeset
1513 }
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carl
parents: 191
diff changeset
1514 }
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carl
parents: 191
diff changeset
1515 }
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carl
parents: 191
diff changeset
1516 return NULL;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1517 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1518
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1519
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1520 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
1521 void usage(const char *prog)
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1522 {
192
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carl
parents: 191
diff changeset
1523 fprintf(stderr, "Usage: %s [-d [level]] [-c] [-s] [-e from|to] [-b dccifd-addr] -r port -p sm-sock-addr [-t timeout]\n", prog);
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carl
parents: 191
diff changeset
1524 fprintf(stderr, "where dccifd_addr is for the connection to dccifd\n");
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carl
parents: 191
diff changeset
1525 fprintf(stderr, " and should be local-domain-socket-file-name\n");
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carl
parents: 191
diff changeset
1526 fprintf(stderr, "where port is for the connection to our own dns resolver processes\n");
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carl
parents: 191
diff changeset
1527 fprintf(stderr, " and should be local-domain-socket-file-name\n");
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carl
parents: 191
diff changeset
1528 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
1529 fprintf(stderr, " and should be one of\n");
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carl
parents: 191
diff changeset
1530 fprintf(stderr, " inet:port@ip-address\n");
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carl
parents: 191
diff changeset
1531 fprintf(stderr, " local:local-domain-socket-file-name\n");
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carl
parents: 191
diff changeset
1532 fprintf(stderr, "-c will load and dump the config to stdout\n");
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carl
parents: 191
diff changeset
1533 fprintf(stderr, "-s will stress test the config loading code by repeating the load/free cycle\n");
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carl
parents: 191
diff changeset
1534 fprintf(stderr, " in an infinte loop.\n");
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carl
parents: 191
diff changeset
1535 fprintf(stderr, "-d will set the syslog message level, currently 0 to 3\n");
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carl
parents: 191
diff changeset
1536 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
1537 fprintf(stderr, " current config. The | character is used to separate the from and to\n");
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carl
parents: 191
diff changeset
1538 fprintf(stderr, " addresses in the argument to the -e switch\n");
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1539 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1540
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1541
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1542
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1543 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
1544 void setup_socket(const char *sock) {
192
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carl
parents: 191
diff changeset
1545 unlink(sock);
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1546 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1547
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1548
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1549 /*
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1550 * The signal handler function -- only gets called when a SIGCHLD
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1551 * is received, ie when a child terminates
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1552 */
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1553 void sig_chld(int signo)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1554 {
192
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carl
parents: 191
diff changeset
1555 int status;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1556 /* Wait for any child without blocking */
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1557 while (waitpid(-1, &status, WNOHANG) > 0) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1558 // ignore child exit status, we only do this to cleanup zombies
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carl
parents: 191
diff changeset
1559 }
94
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
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1563 int main(int argc, char**argv)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1564 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1565 token_init();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1566 bool check = false;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1567 bool stress = false;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1568 bool setconn = false;
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carl
parents: 191
diff changeset
1569 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
1570 char *email = NULL;
192
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carl
parents: 191
diff changeset
1571 int c;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1572 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
1573 extern char *optarg;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1574
235
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1575 // setup srs coding detection
246
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1576 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
1577 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
1578 exit(3);
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1579 }
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1580
246
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1581 // setup prvs coding detection
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1582 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
1583 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
1584 exit(3);
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1585 }
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1586
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1587 // Process command line options
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1588 while ((c = getopt(argc, argv, args)) != -1) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1589 switch (c) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1590 case 'b':
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1591 if (optarg == NULL || *optarg == '\0') {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1592 fprintf(stderr, "Illegal dccifd socket: %s\n", optarg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1593 exit(EX_USAGE);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1594 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1595 dccifd_port = strdup(optarg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1596 break;
177
a4d313c2460b start embedded dcc filtering
carl
parents: 174
diff changeset
1597
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1598 case 'r':
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carl
parents: 191
diff changeset
1599 if (optarg == NULL || *optarg == '\0') {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1600 fprintf(stderr, "Illegal resolver socket: %s\n", optarg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1601 exit(EX_USAGE);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1602 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1603 resolver_port = strdup(optarg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1604 setup_socket(resolver_port);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191