annotate src/dnsbl.cpp @ 270:f92f24950bd3 stable-6-0-35

Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
author Carl Byington <carl@five-ten-sg.com>
date Mon, 09 Sep 2013 15:15:53 -0700
parents f941563c2a95
children a99b6c1f5f67
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1 /*
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2
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3 Copyright (c) 2013 Carl Byington - 510 Software Group, released under
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c7fc218686f5 gpl3, block mail to recipients that cannot reply
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4 the GPL version 3 or any later version at your choice available at
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5 http://www.gnu.org/licenses/gpl-3.0.txt
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6
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7 Based on a sample milter Copyright (c) 2000-2003 Sendmail, Inc. and its
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8 suppliers. Inspired by the DCC by Rhyolite Software
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9
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10 -b port The port used to talk to the dcc interface daemon
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11 -r port The port used to talk to our internal dns resolver processes
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12 -p port The port through which the MTA will connect to this milter.
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13 -t sec The timeout value.
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14 -c Check the config, and print a copy to stdout. Don't start the
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15 milter or do anything with the socket.
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16 -s Stress test by loading and deleting the current config in a loop.
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17 -d level set the debug level
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18 -e f|t Print the results of looking up from address f and to address
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19 t in the current config
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20
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21 */
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22
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23
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24 // from sendmail sample
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25 #include <sys/types.h>
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26 #include <sys/stat.h>
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27 #include <errno.h>
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28 #include <sysexits.h>
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29 #include <unistd.h>
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30
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31 // needed for socket io
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32 #include <sys/ioctl.h>
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33 #include <net/if.h>
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34 #include <arpa/inet.h>
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35 #include <netinet/in.h>
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36 #include <netinet/tcp.h>
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37 #include <netdb.h>
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38 #include <sys/socket.h>
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39 #include <sys/un.h>
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40
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41 // needed for thread
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42 #include <pthread.h>
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43
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44 // needed for std c++ collections
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45 #include <set>
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46 #include <map>
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47 #include <list>
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48
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49 // for the dns resolver
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50 #include <netinet/in.h>
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51 #include <arpa/nameser.h>
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52 #include <resolv.h>
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53
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54 // misc stuff needed here
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55 #include <ctype.h>
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56 #include <syslog.h>
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57 #include <pwd.h>
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58 #include <sys/wait.h> /* header for waitpid() and various macros */
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59 #include <signal.h> /* header for signal functions */
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60
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61 #include "includes.h"
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62
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63 #ifndef HAVE_DAEMON
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64 #include "daemon.h"
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65 #include "daemon.c"
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66 #endif
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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_hourly_counts; // protected with rate_mutex
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118 rcpt_rates rcpt_daily_counts; // protected with rate_mutex
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120
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121 struct ns_map {
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122 // all the strings are owned by the keys/values in the ns_host string map
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123 string_map ns_host; // nameserver name -> host name that uses this name server
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124 ns_mapper ns_ip; // nameserver name -> ipv4 address of the name server
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125 ~ns_map();
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126 void add(const char *name, const char *refer);
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127 };
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128
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129
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130 ns_map::~ns_map() {
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131 for (string_map::iterator i=ns_host.begin(); i!=ns_host.end(); i++) {
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132 const char *x = (*i).first;
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133 const char *y = (*i).second;
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134 free((void*)x);
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135 free((void*)y);
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136 }
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137 ns_ip.clear();
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138 ns_host.clear();
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139 }
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141
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142 void ns_map::add(const char *name, const char *refer) {
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143 string_map::iterator i = ns_host.find(name);
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144 if (i != ns_host.end()) return;
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145 char *x = strdup(name);
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146 char *y = strdup(refer);
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147 ns_ip[x] = 0;
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148 ns_host[x] = y;
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149
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150 }
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151
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152 // packed structure to allow a single socket write to dump the
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153 // length and the following answer. The packing attribute is gcc specific.
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154 struct glommer {
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155 size_t length;
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156 #ifdef NS_PACKETSZ
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157 u_char answer[NS_PACKETSZ*4]; // with a resolver, we return resolver answers
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158 #else
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159 uint32_t answer; // without a resolver, we return a single ipv4 address in network byte order, 0 == no answer
192
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160 #endif
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161 } __attribute__ ((packed));
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162
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163
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164 ////////////////////////////////////////////////
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165 // helper to manipulate recipient counts
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166 //
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167 void incr_rcpt_count(const char *user, int &hourly, int &daily);
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168 void incr_rcpt_count(const char *user, int &hourly, int &daily) {
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169 pthread_mutex_lock(&rate_mutex);
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170 rcpt_rates::iterator i = rcpt_hourly_counts.find(user);
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171 hourly = 1;
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172 if (i == rcpt_hourly_counts.end()) {
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173 user = strdup(user);
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174 rcpt_hourly_counts[user] = hourly;
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175 }
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176 else {
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177 hourly = ++((*i).second);
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178 }
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179
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180 rcpt_rates::iterator j = rcpt_daily_counts.find(user);
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181 daily = 1;
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182 if (j == rcpt_daily_counts.end()) {
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183 user = strdup(user);
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184 rcpt_daily_counts[user] = daily;
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185 }
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186 else {
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187 daily = ++((*j).second);
192
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188 }
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189 pthread_mutex_unlock(&rate_mutex);
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190 }
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191
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192 ////////////////////////////////////////////////
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193 // helper to discard the strings held by a context_map
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194 //
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195 void discard(context_map &cm);
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196 void discard(context_map &cm) {
192
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197 for (context_map::iterator i=cm.begin(); i!=cm.end(); i++) {
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198 const char *x = (*i).first;
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199 free((void*)x);
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200 }
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201 cm.clear();
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202 }
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203
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204
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205 ////////////////////////////////////////////////
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206 // helper to register a string in a context_map
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207 //
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208 void register_string(context_map &cm, const char *name, CONTEXT *con);
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209 void register_string(context_map &cm, const char *name, CONTEXT *con) {
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210 context_map::iterator i = cm.find(name);
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211 if (i != cm.end()) return;
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212 char *x = strdup(name);
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213 cm[x] = con;
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214 }
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215
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216
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217 ////////////////////////////////////////////////
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218 // disconnect the fd from the dns resolver process
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219 //
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220 void my_disconnect(int sock, bool decrement = true);
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221 void my_disconnect(int sock, bool decrement) {
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222 if (sock != NULL_SOCKET) {
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223 if (decrement) {
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224 pthread_mutex_lock(&fd_pool_mutex);
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225 resolver_sock_count--;
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226 pthread_mutex_unlock(&fd_pool_mutex);
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227 }
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228 shutdown(sock, SHUT_RDWR);
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229 close(sock);
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230 }
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231 }
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232
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233
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234 ////////////////////////////////////////////////
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235 // return fd connected to the dns resolver process
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236 //
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237 int my_connect();
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238 int my_connect() {
192
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239 // if we have had recent errors, don't even try to open the socket
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240 if ((time(NULL) - last_error_time) < ERROR_SOCKET_TIME) return NULL_SOCKET;
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241
192
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242 // nothing recent, maybe this time it will work
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243 int sock = NULL_SOCKET;
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244 sockaddr_un server;
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245 memset(&server, '\0', sizeof(server));
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246 server.sun_family = AF_UNIX;
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247 strncpy(server.sun_path, resolver_port, sizeof(server.sun_path)-1);
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248 sock = socket(AF_UNIX, SOCK_STREAM, 0);
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249 if (sock != NULL_SOCKET) {
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250 bool rc = (connect(sock, (sockaddr *)&server, sizeof(server)) == 0);
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251 if (!rc) {
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252 my_disconnect(sock, false);
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253 sock = NULL_SOCKET;
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254 last_error_time = time(NULL);
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255 }
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256 }
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257 else last_error_time = time(NULL);
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258 if (sock != NULL_SOCKET) {
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259 pthread_mutex_lock(&fd_pool_mutex);
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260 resolver_sock_count++;
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261 pthread_mutex_unlock(&fd_pool_mutex);
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262 }
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263 return sock;
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264 }
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265
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266
236
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267 ////////////////////////////////////////////////
252
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268 // ask a dns question and get an A record answer in network byte order
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269 // we don't try very hard, just using the default resolver retry settings.
236
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270 // If we cannot get an answer, we just accept the mail.
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271 //
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272 //
252
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273 uint32_t dns_interface(mlfiPriv &priv, const char *question, bool maybe_ip, ns_map *nameservers);
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274 uint32_t dns_interface(mlfiPriv &priv, const char *question, bool maybe_ip, ns_map *nameservers) {
236
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275 // tell sendmail we are still working
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276 #if _FFR_SMFI_PROGRESS
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277 if (priv.eom) smfi_progress(priv.ctx);
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278 #endif
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279
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280 // this part can be done without locking the resolver mutex. Each
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281 // milter thread is talking over its own socket to a separate resolver
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282 // process, which does the actual dns resolution.
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283 if (priv.err) return 0; // cannot ask more questions on this socket.
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284 if (maybe_ip) {
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285 // might be a bare ip address, try this first to avoid dns lookups that may not be needed
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286 in_addr ip;
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287 if (inet_aton(question, &ip)) {
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288 return ip.s_addr;
236
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289 }
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290 }
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291 int n = strlen(question);
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292 if (question[n-1] == '.') {
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293 priv.my_write(question, n+1); // write the question including the null terminator
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294 }
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295 else {
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296 priv.my_write(question, n); // write the question
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297 priv.my_write(".", 2); // and the fully qualified . terminator and null string terminator
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298 }
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diff changeset
299 glommer glom;
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300 char *buf = (char *)&glom;
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diff changeset
301 priv.my_read(buf, sizeof(glom.length));
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diff changeset
302 buf += sizeof(glom.length);
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303 #ifdef RESOLVER_DEBUG
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304 char text[1000];
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305 snprintf(text, sizeof(text), "dns_interface() wrote question %s and has answer length %d", question, glom.length);
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306 my_syslog(text);
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diff changeset
307 #endif
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308 if (glom.length == 0) return 0;
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diff changeset
309 if (glom.length > sizeof(glom.answer)) {
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310 priv.err = true;
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311 return 0; // cannot process overlarge answers
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312 }
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313 priv.my_read(buf, glom.length);
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314
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diff changeset
315 #ifdef NS_PACKETSZ
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316 // now we need to lock the resolver mutex to keep the milter threads from
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317 // stepping on each other while parsing the dns answer.
252
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318 uint32_t ret_address = 0;
236
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319 pthread_mutex_lock(&resolve_mutex);
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320 // parse the answer
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diff changeset
321 ns_msg handle;
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322 ns_rr rr;
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323 if (ns_initparse(glom.answer, glom.length, &handle) == 0) {
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324 // look for ns names
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325 if (nameservers) {
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326 ns_map &ns = *nameservers;
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327 int rrnum = 0;
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diff changeset
328 while (ns_parserr(&handle, ns_s_ns, rrnum++, &rr) == 0) {
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diff changeset
329 if (ns_rr_type(rr) == ns_t_ns) {
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330 char nam[NS_MAXDNAME+1];
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331 char *n = nam;
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332 const u_char *p = ns_rr_rdata(rr);
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333 while (((n-nam) < NS_MAXDNAME) && ((size_t)(p-glom.answer) < glom.length) && *p) {
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334 size_t s = *(p++);
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335 if (s > 191) {
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336 // compression pointer
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337 s = (s-192)*256 + *(p++);
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338 if (s >= glom.length) break; // pointer outside bounds of answer
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339 p = glom.answer + s;
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340 s = *(p++);
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341 }
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diff changeset
342 if (s > 0) {
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diff changeset
343 if ((size_t)(n-nam) >= (NS_MAXDNAME-s)) break; // destination would overflow name buffer
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344 if ((size_t)(p-glom.answer) >= (glom.length-s)) break; // source outside bounds of answer
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diff changeset
345 memcpy(n, p, s);
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346 n += s;
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347 p += s;
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348 *(n++) = '.';
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diff changeset
349 }
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diff changeset
350 }
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351 if (n-nam) n--; // remove trailing .
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352 *n = '\0'; // null terminate it
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353 ns.add(nam, question); // ns host to lookup later
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354 }
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diff changeset
355 }
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diff changeset
356 rrnum = 0;
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diff changeset
357 while (ns_parserr(&handle, ns_s_ar, rrnum++, &rr) == 0) {
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diff changeset
358 if (ns_rr_type(rr) == ns_t_a) {
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diff changeset
359 char* nam = (char*)ns_rr_name(rr);
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360 ns_mapper::iterator i = ns.ns_ip.find(nam);
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diff changeset
361 if (i != ns.ns_ip.end()) {
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diff changeset
362 // we want this ip address
252
836b7f2357f9 need ntohl() before using masks that are defined in host byte order
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diff changeset
363 uint32_t address;
236
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diff changeset
364 memcpy(&address, ns_rr_rdata(rr), sizeof(address));
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365 ns.ns_ip[nam] = address;
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diff changeset
366 }
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diff changeset
367 }
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diff changeset
368 }
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diff changeset
369 }
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diff changeset
370 int rrnum = 0;
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diff changeset
371 while (ns_parserr(&handle, ns_s_an, rrnum++, &rr) == 0) {
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diff changeset
372 if (ns_rr_type(rr) == ns_t_a) {
252
836b7f2357f9 need ntohl() before using masks that are defined in host byte order
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diff changeset
373 uint32_t address;
236
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diff changeset
374 memcpy(&address, ns_rr_rdata(rr), sizeof(address));
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diff changeset
375 ret_address = address;
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diff changeset
376 }
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diff changeset
377 }
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diff changeset
378 }
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diff changeset
379 pthread_mutex_unlock(&resolve_mutex);
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diff changeset
380 #ifdef RESOLVER_DEBUG
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diff changeset
381 snprintf(text, sizeof(text), "dns_interface() found ip %d", ret_address);
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diff changeset
382 my_syslog(text);
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diff changeset
383 #endif
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diff changeset
384 return ret_address;
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diff changeset
385 #else
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diff changeset
386 return glom.answer;
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diff changeset
387 #endif
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diff changeset
388 }
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diff changeset
389
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diff changeset
390
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diff changeset
391 ////////////////////////////////////////////////
270
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diff changeset
392 // lookup a hostname on the uribl
236
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diff changeset
393 //
270
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diff changeset
394 // if we find hostname on the uribl, return true and point found to hostname
236
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diff changeset
395 // as a string registered in hosts.
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diff changeset
396 // otherwise, return false and preserve the value of found.
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diff changeset
397 //
270
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diff changeset
398 bool uriblookup(mlfiPriv &priv, string_set &hosts, const char *hostname, const char *&found) ;
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diff changeset
399 bool uriblookup(mlfiPriv &priv, string_set &hosts, const char *hostname, const char *&found) {
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parents: 268
diff changeset
400 if (debug_syslog > 4) {
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parents: 268
diff changeset
401 char tmp[maxlen];
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parents: 268
diff changeset
402 snprintf(tmp, sizeof(tmp), "looking for %s on %s", hostname, priv.uribl_suffix);
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diff changeset
403 my_syslog(tmp);
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diff changeset
404 }
236
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parents: 235
diff changeset
405 char buf[maxlen];
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
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parents: 235
diff changeset
406 snprintf(buf, sizeof(buf), "%s.%s.", hostname, priv.uribl_suffix);
270
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
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parents: 268
diff changeset
407 uint32_t ip = ntohl(dns_interface(priv, buf, false, NULL));
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
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parents: 268
diff changeset
408 if (ip and (ip != 0x7f000000)) {
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
409 if (debug_syslog > 2) {
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
410 char tmp[maxlen];
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
411 snprintf(tmp, sizeof(tmp), "found %s on %s", hostname, priv.uribl_suffix);
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
412 my_syslog(tmp);
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
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 found = register_string(hosts, hostname);
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
415 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
416 }
c0d2e99c0a1d Add surbl checks on 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 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
418 }
c0d2e99c0a1d Add surbl checks on 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
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
420
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
421 ////////////////////////////////////////////////
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Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
422 // 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
423 // -------------
270
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parents: 268
diff changeset
424 // hostname MUST not have a trailing dot. Find the tld part of
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parents: 268
diff changeset
425 // the hostname, and add one more level. If that is listed on
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Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
426 // the uribl, return true and point found to the part of the
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parents: 268
diff changeset
427 // hostname that we found as a string registered in hosts.
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parents: 268
diff changeset
428 // Otherwise, return false and preserve the value of found.
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
429 //
c0d2e99c0a1d Add surbl checks on 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 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
431 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
432 in_addr ip;
270
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parents: 268
diff changeset
433 if (inet_aton(hostname, &ip)) return false; // don't check ip addresses in uribls
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Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
434 const char* components[maxlen];
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parents: 268
diff changeset
435 int n = 0; // number of components in the hostname
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Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
436 while (n < maxlen) {
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
437 components[n++] = hostname;
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
438 const char *c = strchr(hostname, '.');
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
439 if (!c) break;
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
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parents: 268
diff changeset
440 hostname = c+1;
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
441 }
270
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
442 string_set *tlds = priv.memory->get_tlds();
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
443 string_set *tldwilds = priv.memory->get_tldwilds();
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
444 string_set *tldnots = priv.memory->get_tldnots();
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
445 string_set::iterator xtlds = tlds->end();
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
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parents: 268
diff changeset
446 string_set::iterator xtldwilds = tldwilds->end();
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
447 string_set::iterator xtldnots = tldnots->end();
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
448 for (int i=max(0,n-4); i<n; i++) {
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
449 const char* name = components[i];
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
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parents: 268
diff changeset
450 bool rc = false;
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
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parents: 268
diff changeset
451 string_set::iterator tt = tldnots->find(name);
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
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parents: 268
diff changeset
452 if (tt != xtldnots) {
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
453 rc = true;
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
454 }
270
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
455 else {
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
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parents: 268
diff changeset
456 tt = tldwilds->find(name);
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
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parents: 268
diff changeset
457 if (tt != xtldwilds) {
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
458 if (i > 1) {
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
459 rc = true;
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
460 name = components[i-2];
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parents: 268
diff changeset
461 }
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
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parents: 268
diff changeset
462 else return false;
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
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parents: 268
diff changeset
463 }
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
464 else {
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parents: 268
diff changeset
465 tt = tlds->find(name);
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
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parents: 268
diff changeset
466 if (tt != xtlds) {
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
467 if (i > 0) {
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
468 rc = true;
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
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parents: 268
diff changeset
469 name = components[i-1];
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Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
470 }
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
471 else return false;
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
472 }
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
473 }
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
474 }
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
475 if (rc) {
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
476 return uriblookup(priv, hosts, name, found);
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
477 }
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
478 }
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
479 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
480 }
c0d2e99c0a1d Add surbl checks on 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
c0d2e99c0a1d Add surbl checks on 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
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
483 mlfiPriv::mlfiPriv() {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
484 pthread_mutex_lock(&config_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
485 pc = config;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
486 pc->reference_count++;
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carl
parents: 191
diff changeset
487 pthread_mutex_unlock(&config_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
488 get_fd();
230
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
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parents: 227
diff changeset
489 ctx = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
490 eom = false;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
491 ip = 0;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
492 helo = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
493 mailaddr = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
494 queueid = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
495 authenticated = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
496 client_name = NULL;
257
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
497 client_dns_name = NULL;
268
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
498 client_dns_forged = false;
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
499 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
500 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
501 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
502 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
503 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
504 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
505 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
506 want_dccgrey = false;
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
507 want_dccbulk = false;
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
508 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
509 content_context = NULL;
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
510 memory = NULL;
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
511 scanner = NULL;
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
512 content_suffix = NULL;
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
513 content_message = NULL;
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
514 uribl_suffix = NULL;
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Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
515 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
516 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
517 assassin = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
518 dccifd = NULL;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
519 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
520
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
521 mlfiPriv::~mlfiPriv() {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
522 return_fd();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
523 pthread_mutex_lock(&config_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
524 pc->reference_count--;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
525 bool last = (!pc->reference_count) && (pc != config);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
526 pthread_mutex_unlock(&config_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
527 if (last) delete pc; // free this config, since we were the last reference to it
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
528 if (helo) free((void*)helo);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
529 reset(true);
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
530 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
531
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
532 void mlfiPriv::reset(bool final) {
194
688ec12a3c0c delay autowhitelisting to avoid out of office reply bots
carl
parents: 193
diff changeset
533 while (!delayer.empty()) {
231
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
534 DELAYWHITEP dwp = delayer.front();
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
535 const char *loto = dwp->get_loto();
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
536 if (loto) free((void*)loto);
193
3ea79ef741a0 delay autowhitelisting to avoid out of office reply bots
carl
parents: 192
diff changeset
537 delete dwp;
3ea79ef741a0 delay autowhitelisting to avoid out of office reply bots
carl
parents: 192
diff changeset
538 delayer.pop_front();
3ea79ef741a0 delay autowhitelisting to avoid out of office reply bots
carl
parents: 192
diff changeset
539 }
257
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
540 if (mailaddr) free((void*)mailaddr);
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
541 if (queueid) free((void*)queueid);
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
542 if (authenticated) free((void*)authenticated);
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
543 if (client_name) free((void*)client_name);
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
544 if (client_dns_name) free((void*)client_dns_name);
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
545 discard(hosts_uribl);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
546 delayer.clear();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
547 discard(env_to);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
548 if (memory) delete memory;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
549 if (scanner) delete scanner;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
550 if (assassin) delete assassin;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
551 if (dccifd) delete dccifd;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
552 if (!final) {
230
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
553 ctx = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
554 eom = false;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
555 mailaddr = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
556 queueid = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
557 authenticated = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
558 client_name = NULL;
257
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
559 client_dns_name = NULL;
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
560 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
561 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
562 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
563 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
564 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
565 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
566 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
567 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
568 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
569 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
570 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
571 memory = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
572 scanner = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
573 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
574 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
575 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
576 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
577 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
578 assassin = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
579 dccifd = NULL;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
580 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
581 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
582
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
583 void mlfiPriv::get_fd() {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
584 err = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
585 fd = NULL_SOCKET;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
586 int result = pthread_mutex_lock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
587 if (!result) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
588 std::set<int>::iterator i;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
589 i = fd_pool.begin();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
590 if (i != fd_pool.end()) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
591 // have at least one fd in the pool
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
592 err = false;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
593 fd = *i;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
594 fd_pool.erase(fd);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
595 resolver_pool_size--;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
596 pthread_mutex_unlock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
597 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
598 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
599 // pool is empty, get a new fd
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
600 pthread_mutex_unlock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
601 fd = my_connect();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
602 err = (fd == NULL_SOCKET);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
603 }
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 // cannot lock the pool, just get a new fd
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
607 fd = my_connect();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
608 err = (fd == NULL_SOCKET);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
609 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
610 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
611
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
612 void mlfiPriv::return_fd() {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
613 if (err) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
614 // 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
615 my_disconnect(fd);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
616 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
617 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
618 int result = pthread_mutex_lock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
619 if (!result) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
620 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
621 // return the fd to the pool
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
622 fd_pool.insert(fd);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
623 resolver_pool_size++;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
624 pthread_mutex_unlock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
625 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
626 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
627 // 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
628 // 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
629 pthread_mutex_unlock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
630 my_disconnect(fd);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
631 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
632 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
633 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
634 // 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
635 my_disconnect(fd);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
636 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
637 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
638 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
639
177
a4d313c2460b start embedded dcc filtering
carl
parents: 174
diff changeset
640 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
641 if (err) return 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
642 size_t rs = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
643 while (len) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
644 size_t ws = write(fd, buf, len);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
645 if (ws > 0) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
646 rs += ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
647 len -= ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
648 buf += ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
649 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
650 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
651 // peer closed the socket!
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
652 rs = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
653 err = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
654 break;
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 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
657 return rs;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
658 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
659
177
a4d313c2460b start embedded dcc filtering
carl
parents: 174
diff changeset
660 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
661 if (err) return 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
662 size_t rs = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
663 while (len) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
664 size_t ws = read(fd, buf, len);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
665 if (ws > 0) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
666 rs += ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
667 len -= ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
668 buf += ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
669 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
670 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
671 // peer closed the socket!
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
672 rs = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
673 err = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
674 break;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
675 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
676 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
677 return rs;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
678 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
679
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
680 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
681 if (!memory) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
682 // first recipient that needs content filtering sets
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
683 // some of the content filtering parameters
270
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
684 memory = new recorder(this, con.get_html_tags(), con.get_content_tlds(), con.get_content_tldwilds(), con.get_content_tldnots());
192
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carl
parents: 191
diff changeset
685 scanner = new url_scanner(memory);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
686 content_suffix = con.get_content_suffix();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
687 content_message = con.get_content_message();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
688 uribl_suffix = con.get_uribl_suffix();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
689 uribl_message = con.get_uribl_message();
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carl
parents: 191
diff changeset
690 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
691 // 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
692 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
693 if (helo) {
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
694 helo_uribl = check_uribl(*this, hosts_uribl, helo, host_uribl);
257
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
695 }
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
696 if (client_dns_name && !helo_uribl) {
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
697 client_uribl = check_uribl(*this, hosts_uribl, client_dns_name, host_uribl);
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
698 }
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
699 if (mailaddr && !client_uribl) {
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
700 const char *f = strchr(mailaddr, '@');
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
701 if (f) from_uribl = check_uribl(*this, hosts_uribl, f+1, host_uribl);
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
702 }
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
703 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
704 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
705 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
706
186
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
707
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
708 mlfiPriv* fetch_priv_from_ctx(SMFICTX *ctx);
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
709 mlfiPriv* fetch_priv_from_ctx(SMFICTX *ctx)
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
710 {
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
711 mlfiPriv *priv = (struct mlfiPriv *)smfi_getpriv(ctx);
187
f0eda59e8afd fix null pointer dereference from missing HELO command
carl
parents: 186
diff changeset
712 priv->ctx = ctx;
186
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
713 return priv;
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
714 }
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
715 #define MLFIPRIV fetch_priv_from_ctx(ctx)
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
716
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
717
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
718
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
719 ////////////////////////////////////////////////
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
720 // syslog a message
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
721 //
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
722 void my_syslog(mlfiPriv *priv, const char *text) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
723 char buf[maxlen];
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carl
parents: 191
diff changeset
724 if (priv) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
725 snprintf(buf, sizeof(buf), "%s: %s", priv->queueid, text);
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carl
parents: 191
diff changeset
726 text = buf;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
727 }
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carl
parents: 191
diff changeset
728 if (use_syslog) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
729 pthread_mutex_lock(&syslog_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
730 if (!syslog_opened) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
731 openlog("dnsbl", LOG_PID, LOG_MAIL);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
732 syslog_opened = true;
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carl
parents: 191
diff changeset
733 }
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carl
parents: 191
diff changeset
734 syslog(LOG_NOTICE, "%s", text);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
735 pthread_mutex_unlock(&syslog_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
736 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
737 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
738 printf("%s \n", text);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
739 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
740 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
741
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
742 void my_syslog(mlfiPriv *priv, const string text) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
743 if (debug_syslog > 3) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
744 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
745 strncpy(buf, text.c_str(), sizeof(buf));
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
746 buf[maxlen-1] = '\0'; // ensure null termination
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carl
parents: 191
diff changeset
747 my_syslog(priv, buf);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
748 }
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
749 }
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
750
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
751 void my_syslog(const char *text) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
752 my_syslog(NULL, text);
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
753 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
754
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
755
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
756 ////////////////////////////////////////////////
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
757 // read a resolver request from the socket, process it, and
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
758 // write the result back to the socket.
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
759
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
760 void process_resolver_requests(int socket);
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
761 void process_resolver_requests(int socket) {
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
762 #ifdef NS_MAXDNAME
192
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carl
parents: 191
diff changeset
763 char question[NS_MAXDNAME];
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
764 #else
192
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carl
parents: 191
diff changeset
765 char question[1000];
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
766 #endif
192
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carl
parents: 191
diff changeset
767 glommer glom;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
768
192
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carl
parents: 191
diff changeset
769 int maxq = sizeof(question);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
770 while (true) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
771 // read a question
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
772 int rs = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
773 while (rs < maxq) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
774 int ns = read(socket, question+rs, maxq-rs);
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carl
parents: 191
diff changeset
775 if (ns > 0) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
776 rs += ns;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
777 if (question[rs-1] == '\0') {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
778 // last byte read was the null terminator, we are done
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carl
parents: 191
diff changeset
779 break;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
780 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
781 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
782 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
783 // peer closed the socket
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
784 #ifdef RESOLVER_DEBUG
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
785 my_syslog("process_resolver_requests() peer closed socket while reading question");
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carl
parents: 191
diff changeset
786 #endif
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
787 shutdown(socket, SHUT_RDWR);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
788 close(socket);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
789 return;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
790 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
791 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
792 question[rs-1] = '\0'; // ensure null termination
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
793
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
794 // find the answer
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
795 #ifdef NS_PACKETSZ
192
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carl
parents: 191
diff changeset
796 #ifdef RESOLVER_DEBUG
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carl
parents: 191
diff changeset
797 char text[1000];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
798 snprintf(text, sizeof(text), "process_resolver_requests() has a question %s", question);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
799 my_syslog(text);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
800 #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
801 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
802 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
803 else glom.length = (size_t)res_result;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
804 #else
192
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carl
parents: 191
diff changeset
805 glom.length = sizeof(glom.answer);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
806 glom.answer = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
807 struct hostent *host = gethostbyname(question);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
808 if (host && (host->h_addrtype == AF_INET)) {
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carl
parents: 191
diff changeset
809 memcpy(&glom.answer, host->h_addr, sizeof(glom.answer));
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carl
parents: 191
diff changeset
810 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
811 #endif
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
812
192
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carl
parents: 191
diff changeset
813 // write the answer
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
814 char *buf = (char *)&glom;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
815 int len = glom.length + sizeof(glom.length);
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carl
parents: 191
diff changeset
816 #ifdef RESOLVER_DEBUG
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carl
parents: 191
diff changeset
817 snprintf(text, sizeof(text), "process_resolver_requests() writing answer length %d for total %d", glom.length, len);
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carl
parents: 191
diff changeset
818 my_syslog(text);
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carl
parents: 191
diff changeset
819 #endif
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carl
parents: 191
diff changeset
820 int ws = 0;
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carl
parents: 191
diff changeset
821 while (len > ws) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
822 int ns = write(socket, buf+ws, len-ws);
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carl
parents: 191
diff changeset
823 if (ns > 0) {
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carl
parents: 191
diff changeset
824 ws += ns;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
825 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
826 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
827 // peer closed the socket!
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
828 #ifdef RESOLVER_DEBUG
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
829 my_syslog("process_resolver_requests() peer closed socket while writing answer");
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carl
parents: 191
diff changeset
830 #endif
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carl
parents: 191
diff changeset
831 shutdown(socket, SHUT_RDWR);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
832 close(socket);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
833 return;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
834 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
835 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
836 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
837 }
e107ade3b1c0 fix dos line terminators
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 ////////////////////////////////////////////////
252
836b7f2357f9 need ntohl() before using masks that are defined in host byte order
Carl Byington <carl@five-ten-sg.com>
parents: 249
diff changeset
841 // check a single dns list, return ip address in network byte order
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
842 //
252
836b7f2357f9 need ntohl() before using masks that are defined in host byte order
Carl Byington <carl@five-ten-sg.com>
parents: 249
diff changeset
843 uint32_t check_single(mlfiPriv &priv, int32_t ip, const char *suffix);
836b7f2357f9 need ntohl() before using masks that are defined in host byte order
Carl Byington <carl@five-ten-sg.com>
parents: 249
diff changeset
844 uint32_t check_single(mlfiPriv &priv, int32_t ip, const char *suffix) {
192
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carl
parents: 191
diff changeset
845 // make a dns question
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
846 const u_char *src = (const u_char *)&ip;
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
847 if (src[0] == 127) return 0; // don't do dns lookups on localhost
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
848 if (src[0] == 10) return 0; // don't do dns lookups on rfc1918 space
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
849 if ((src[0] == 192) && (src[1] == 168)) return 0;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
850 if ((src[0] == 172) && (16 <= src[1]) && (src[1] <= 31)) return 0;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
851 #ifdef NS_MAXDNAME
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
852 char question[NS_MAXDNAME];
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
853 #else
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
854 char question[1000];
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
855 #endif
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
856 snprintf(question, sizeof(question), "%u.%u.%u.%u.%s.", src[3], src[2], src[1], src[0], suffix);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
857 // ask the question, if we get an A record it implies a blacklisted ip address
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
858 return dns_interface(priv, question, false, NULL);
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
859 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
860
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
861
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
862 ////////////////////////////////////////////////
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
863 // check a single dnsbl
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
864 //
242
d8ee4c97b9ab 64 bit fixes for libresolv.a
Carl Byington <carl@five-ten-sg.com>
parents: 238
diff changeset
865 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
866 bool check_single(mlfiPriv &priv, int32_t ip, DNSBL &bl) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
867 return check_single(priv, ip, bl.suffix);
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
868 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
869
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
870
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
871 ////////////////////////////////////////////////
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
872 // check a single dnswl
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
873 //
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
874 bool check_single(mlfiPriv &priv, int32_t ip, DNSWL &wl);
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
875 bool check_single(mlfiPriv &priv, int32_t ip, DNSWL &wl) {
252
836b7f2357f9 need ntohl() before using masks that are defined in host byte order
Carl Byington <carl@five-ten-sg.com>
parents: 249
diff changeset
876 uint32_t r = ntohl(check_single(priv, ip, wl.suffix));
836b7f2357f9 need ntohl() before using masks that are defined in host byte order
Carl Byington <carl@five-ten-sg.com>
parents: 249
diff changeset
877 uint32_t v = (uint32_t)0x7f000000;
836b7f2357f9 need ntohl() before using masks that are defined in host byte order
Carl Byington <carl@five-ten-sg.com>
parents: 249
diff changeset
878 uint32_t m = (uint32_t)0xffff0000;
836b7f2357f9 need ntohl() before using masks that are defined in host byte order
Carl Byington <carl@five-ten-sg.com>
parents: 249
diff changeset
879 uint32_t m2 = (uint32_t)0x000000ff;
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
880 if ((r & m) == v) {
252
836b7f2357f9 need ntohl() before using masks that are defined in host byte order
Carl Byington <carl@five-ten-sg.com>
parents: 249
diff changeset
881 uint32_t l = r & m2;
836b7f2357f9 need ntohl() before using masks that are defined in host byte order
Carl Byington <carl@five-ten-sg.com>
parents: 249
diff changeset
882 if ((int)l >= wl.level) return true;
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
883 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
884 return false;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
885 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
886
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
887
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
888 ////////////////////////////////////////////////
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
889 // check the dnsbls specified for this recipient
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
890 //
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
891 bool check_dnsbl(mlfiPriv &priv, dnsblp_list &dnsbll, DNSBLP &rejectlist);
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
892 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
893 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
894 DNSBLP dp = *i; // non null by construction
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
895 bool st;
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
896 map<DNSBLP, bool>::iterator f = priv.checked_black.find(dp);
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
897 if (f == priv.checked_black.end()) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
898 // have not checked this list yet
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
899 st = check_single(priv, priv.ip, *dp);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
900 rejectlist = dp;
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
901 priv.checked_black[dp] = st;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
902 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
903 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
904 st = (*f).second;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
905 rejectlist = (*f).first;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
906 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
907 if (st) return st;
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 return false;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
910 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
911
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
912
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
913 ////////////////////////////////////////////////
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
914 // check the dnswls specified for this recipient
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
915 //
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
916 bool check_dnswl(mlfiPriv &priv, dnswlp_list &dnswll, DNSWLP &acceptlist);
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
917 bool check_dnswl(mlfiPriv &priv, dnswlp_list &dnswll, DNSWLP &acceptlist) {
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
918 for (dnswlp_list::iterator i=dnswll.begin(); i!=dnswll.end(); i++) {
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
919 DNSWLP dp = *i; // non null by construction
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
920 bool st;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
921 map<DNSWLP, bool>::iterator f = priv.checked_white.find(dp);
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
922 if (f == priv.checked_white.end()) {
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
923 // have not checked this list yet
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
924 st = check_single(priv, priv.ip, *dp);
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
925 acceptlist = dp;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
926 priv.checked_white[dp] = st;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
927 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
928 else {
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
929 st = (*f).second;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
930 acceptlist = (*f).first;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
931 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
932 if (st) return st;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
933 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
934 return false;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
935 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
936
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
937
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
938 ////////////////////////////////////////////////
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
939 // check the hosts from the body against the content filter and uribl dnsbls
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
940 //
124
ea6f9c812faa put hostname in smtp message for uribl style lookups
carl
parents: 123
diff changeset
941 //
242
d8ee4c97b9ab 64 bit fixes for libresolv.a
Carl Byington <carl@five-ten-sg.com>
parents: 238
diff changeset
942 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
943 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
944 found = NULL; // normally ip address style
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
945 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
946 string_set &hosts = priv.memory->get_hosts();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
947 string_set &ignore = *priv.content_host_ignore;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
948
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
949 int count = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
950 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
951 int32_t_set ips;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
952 ns_map nameservers;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
953 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
954 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
955
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
956 // 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
957 string_set::iterator j = ignore.find(host);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
958 if (j != ignore.end()) continue;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
959
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
960 // 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
961 if ((cnt > limit) && (limit > 0) && random) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
962 int r = rand() % cnt;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
963 if (r >= limit) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
964 if (debug_syslog > 2) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
965 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
966 snprintf(buf, sizeof(buf), "host %s skipped", host);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
967 my_syslog(&priv, buf);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
968 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
969 continue;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
970 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
971 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
972 count++;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
973 ip = dns_interface(priv, host, true, &nameservers);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
974 if (debug_syslog > 2) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
975 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
976 if (ip) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
977 char adr[sizeof "255.255.255.255 "];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
978 adr[0] = '\0';
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
979 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
980 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
981 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
982 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
983 snprintf(buf, sizeof(buf), "host %s not found", host);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
984 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
985 my_syslog(&priv, buf);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
986 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
987 if (ip) {
242
d8ee4c97b9ab 64 bit fixes for libresolv.a
Carl Byington <carl@five-ten-sg.com>
parents: 238
diff changeset
988 int32_t_set::iterator i = ips.find(ip);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
989 if (i == ips.end()) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
990 // we haven't looked this up yet
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
991 ips.insert(ip);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
992 // check dnsbl style list
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
993 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
994 msg = priv.content_message;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
995 return true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
996 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
997 // Check uribl & surbl style list
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carl
parents: 191
diff changeset
998 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
999 msg = priv.uribl_message;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1000 return true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1001 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1002 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1003 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1004 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1005 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
1006 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
1007 count++;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1008 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
1009 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
1010 ip = (*i).second;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1011 if (!ip) ip = dns_interface(priv, host, false, NULL);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1012 if (debug_syslog > 2) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1013 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1014 if (ip) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1015 char adr[sizeof "255.255.255.255 "];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1016 adr[0] = '\0';
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carl
parents: 191
diff changeset
1017 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
1018 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
1019 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1020 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1021 snprintf(buf, sizeof(buf), "ns %s not found", host);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1022 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1023 my_syslog(&priv, buf);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1024 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1025 if (ip) {
242
d8ee4c97b9ab 64 bit fixes for libresolv.a
Carl Byington <carl@five-ten-sg.com>
parents: 238
diff changeset
1026 int32_t_set::iterator i = ips.find(ip);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1027 if (i == ips.end()) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1028 ips.insert(ip);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1029 if (check_single(priv, ip, priv.content_suffix)) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1030 msg = priv.content_message;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1031 string_map::iterator j = nameservers.ns_host.find(host);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1032 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
1033 const char *refer = (*j).second;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1034 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1035 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
1036 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
1037 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1038 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1039 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
1040 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1041 return true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1042 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1043 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1044 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1045 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1046 return false;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1047 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1048
127
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 126
diff changeset
1049
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1050 ////////////////////////////////////////////////
127
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 126
diff changeset
1051 //
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 126
diff changeset
1052 // 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
1053 // enclosed in <>. I think older versions of sendmail supplied the <>
127
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 126
diff changeset
1054 // 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
1055 // 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
1056 // 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
1057 // 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
1058 // 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
1059 //
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1060 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
1061 const char *to_lower_string(const char *email) {
266
582cfb9c4031 fix unauthenticated rate limit bug for empty mail from
Carl Byington <carl@five-ten-sg.com>
parents: 263
diff changeset
1062 if (!email) return strdup("<>");
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1063 int n = strlen(email);
266
582cfb9c4031 fix unauthenticated rate limit bug for empty mail from
Carl Byington <carl@five-ten-sg.com>
parents: 263
diff changeset
1064 if (n == 0) return strdup("<>");
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1065 if (email[0] == '<') {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1066 // assume it also ends with >
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1067 n -= 2;
266
582cfb9c4031 fix unauthenticated rate limit bug for empty mail from
Carl Byington <carl@five-ten-sg.com>
parents: 263
diff changeset
1068 if (n < 1) return strdup("<>");
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1069 email++;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1070 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1071 if ((email[0] == '\'') && (email[n-1] == '\'') && (n > 2)) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1072 n -= 2;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1073 email++;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1074 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1075 char *key = strdup(email);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1076 key[n] = '\0';
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1077 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
1078 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
1079 // might have srs coding to be removed
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1080 const int nmatch = 6;
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1081 regmatch_t match[nmatch];
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1082 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
1083 int s4 = match[4].rm_so; // domain
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1084 int e4 = match[4].rm_eo;
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1085 int s5 = match[5].rm_so; // user
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1086 int e5 = match[5].rm_eo;
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1087 if ((s4 != -1) && (s5 != -1)) {
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1088 char *newkey = strdup(key); // large enough
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1089 key[e4] = '\0';
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1090 key[e5] = '\0';
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1091 strcpy(newkey, key+s5); // user
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1092 strcat(newkey, "@"); // @
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1093 strcat(newkey, key+s4); // domain
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1094 free(key);
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1095 key = newkey;
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1096 }
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1097 }
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1098 }
246
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1099 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
1100 // 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
1101 const int nmatch = 3;
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1102 regmatch_t match[nmatch];
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1103 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
1104 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
1105 if (s2 != -1) {
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1106 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
1107 free(key);
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1108 key = newkey;
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1109 }
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1110 }
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1111 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1112 return key;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1113 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1114
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1115
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1116 ////////////////////////////////////////////////
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1117 // start of sendmail milter interfaces
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1118 //
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1119 sfsistat mlfi_connect(SMFICTX *ctx, char *hostname, _SOCK_ADDR *hostaddr)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1120 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1121 // allocate some private memory
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1122 mlfiPriv *priv = new mlfiPriv;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1123 if (hostaddr->sa_family == AF_INET) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1124 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
1125 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1126 // save the private data
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1127 smfi_setpriv(ctx, (void*)priv);
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1128
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1129 // continue processing
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1130 return SMFIS_CONTINUE;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1131 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1132
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1133 sfsistat mlfi_helo(SMFICTX * ctx, char *helohost)
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1134 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1135 mlfiPriv &priv = *MLFIPRIV;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1136 priv.helo = strdup(helohost);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1137 return SMFIS_CONTINUE;
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1138 }
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1139
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1140 sfsistat mlfi_envfrom(SMFICTX *ctx, char **from)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1141 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1142 mlfiPriv &priv = *MLFIPRIV;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1143 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
1144 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
1145 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
1146 priv.client_name = smfi_getsymval(ctx, (char*)"_");
191
2a67d31099c3 fix null pointer dereference from missing HELO command
carl
parents: 190
diff changeset
1147 if (!priv.helo) priv.helo = strdup("unknown");
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1148 if (priv.authenticated) priv.authenticated = strdup(priv.authenticated);
257
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
1149 if (priv.client_name) {
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
1150 priv.client_name = strdup(priv.client_name);
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
1151 const char *p = strstr(priv.client_name, " [");
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
1152 if (p) {
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
1153 uint pp = p - priv.client_name;
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
1154 priv.client_dns_name = strdup(priv.client_name);
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
1155 priv.client_dns_name[pp] = '\0';
259
be939802c64e add recipient rate limits by email from address or domain
Carl Byington <carl@five-ten-sg.com>
parents: 257
diff changeset
1156 //char text[500];
be939802c64e add recipient rate limits by email from address or domain
Carl Byington <carl@five-ten-sg.com>
parents: 257
diff changeset
1157 //snprintf(text, sizeof(text), "found simple dns client name %s", priv.client_dns_name);
be939802c64e add recipient rate limits by email from address or domain
Carl Byington <carl@five-ten-sg.com>
parents: 257
diff changeset
1158 //my_syslog(text);
257
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
1159 }
268
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1160 p = strstr(priv.client_name, "] (may be forged)");
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1161 if (p) {
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1162 priv.client_dns_forged = true;
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1163 if (priv.client_dns_name) {
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1164 char text[500];
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1165 snprintf(text, sizeof(text), "forged dns client name %s", priv.client_dns_name);
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1166 my_syslog(text);
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1167 }
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1168 }
257
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
1169 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1170 if (spamc != spamc_empty) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1171 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
1172 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1173 if (dccifd_port) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1174 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
1175 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1176 return SMFIS_CONTINUE;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1177 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1178
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1179 sfsistat mlfi_envrcpt(SMFICTX *ctx, char **rcpt)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1180 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1181 DNSBLP rejectlist = NULL; // list that caused the reject
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1182 mlfiPriv &priv = *MLFIPRIV;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1183 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
1184 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
1185 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
1186 bool self = (strcmp(loto, priv.mailaddr) == 0);
174
da0c41b9f672 don't whitelist addresses with embedded spaces
carl
parents: 173
diff changeset
1187
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1188 // 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
1189 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
1190 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
1191 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1192 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1193 // 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
1194 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
1195 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
1196 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
1197 // tell spam assassin and dccifd about this recipient
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1198 if (priv.assassin) priv.assassin->mlfi_envrcpt(ctx, loto);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1199 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
1200 // loto sending a reply back to priv.mailaddr
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1201 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
1202 const char *replyvalue = con2.find_from(loto);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1203 if (debug_syslog > 1) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1204 char buf[maxlen];
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1205 char buf2[maxlen];
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1206 char msg[maxlen];
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1207 snprintf(msg, sizeof(msg), "from <%s> to <%s> using context %s state %s reply context %s state %s", priv.mailaddr, loto, con.get_full_name(buf,maxlen), fromvalue, con2.get_full_name(buf2,maxlen), replyvalue);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1208 my_syslog(&priv, msg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1209 }
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1210 free((void*)loto);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1211 status st;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1212 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
1213 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
1214 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1215 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1216 if (priv.authenticated) {
255
d6d5c50b9278 Allow dnswl_list and dnsbl_list to be empty, to override lists specified in the ancestor contexts. Add daily recipient limits as a multiple of the hourly limits.
Carl Byington <carl@five-ten-sg.com>
parents: 252
diff changeset
1217 int hourly, daily;
d6d5c50b9278 Allow dnswl_list and dnsbl_list to be empty, to override lists specified in the ancestor contexts. Add daily recipient limits as a multiple of the hourly limits.
Carl Byington <carl@five-ten-sg.com>
parents: 252
diff changeset
1218 incr_rcpt_count(priv.authenticated, hourly, daily);
d6d5c50b9278 Allow dnswl_list and dnsbl_list to be empty, to override lists specified in the ancestor contexts. Add daily recipient limits as a multiple of the hourly limits.
Carl Byington <carl@five-ten-sg.com>
parents: 252
diff changeset
1219 int h_limit = dc.default_context->find_rate(priv.authenticated);
d6d5c50b9278 Allow dnswl_list and dnsbl_list to be empty, to override lists specified in the ancestor contexts. Add daily recipient limits as a multiple of the hourly limits.
Carl Byington <carl@five-ten-sg.com>
parents: 252
diff changeset
1220 int d_limit = dc.default_context->get_daily_multiple() * h_limit;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1221 if (debug_syslog > 1) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1222 char msg[maxlen];
255
d6d5c50b9278 Allow dnswl_list and dnsbl_list to be empty, to override lists specified in the ancestor contexts. Add daily recipient limits as a multiple of the hourly limits.
Carl Byington <carl@five-ten-sg.com>
parents: 252
diff changeset
1223 snprintf(msg, sizeof(msg), "authenticated id %s (%d %d recipients, %d %d limits)", priv.authenticated, hourly, daily, h_limit, d_limit);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1224 my_syslog(&priv, msg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1225 }
255
d6d5c50b9278 Allow dnswl_list and dnsbl_list to be empty, to override lists specified in the ancestor contexts. Add daily recipient limits as a multiple of the hourly limits.
Carl Byington <carl@five-ten-sg.com>
parents: 252
diff changeset
1226 if ((hourly > h_limit) || (daily > d_limit)){
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1227 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
1228 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1229 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1230 st = white;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1231 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1232 else if (fromvalue == token_black) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1233 st = black;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1234 }
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
1235 else if ((fromvalue == token_white) && !self) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1236 st = white;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1237 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1238 else {
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1239 // check the dns based lists, whitelist first
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1240 DNSWLP acceptlist = NULL; // list that caused the whitelisting
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1241 if (check_dnswl(priv, con.get_dnswl_list(), acceptlist)) {
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1242 st = white;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1243 if (debug_syslog > 1) {
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1244 char msg[maxlen];
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1245 snprintf(msg, sizeof(msg), "whitelisted by %s", acceptlist->name);
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1246 my_syslog(&priv, msg);
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1247 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1248 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1249 else if (check_dnsbl(priv, con.get_dnsbl_list(), rejectlist)) {
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1250 st = reject;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1251 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1252 else {
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1253 st = oksofar;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1254 }
192
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 if (st == reject) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1257 // reject the recipient based on some dnsbl
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1258 char adr[sizeof "255.255.255.255 "];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1259 adr[0] = '\0';
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1260 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
1261 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1262 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
1263 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
1264 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1265 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1266 if (st == oksofar) {
268
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1267 // check forged rdns
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1268 if (con.get_requirerdns() && (!priv.client_dns_name || priv.client_dns_forged)) {
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1269 // reject the recipient based on forged reverse dns
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1270 char buf[maxlen];
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1271 snprintf(buf, sizeof(buf), "%s is not acceptable", priv.client_name);
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1272 smfi_setreply(ctx, (char*)"550", (char*)"5.7.1", buf);
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1273 return SMFIS_REJECT;
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1274 }
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1275 // check generic rdns
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1276 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
1277 if (msg) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1278 // reject the recipient based on generic reverse dns
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1279 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1280 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
1281 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
1282 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1283 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1284 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1285 if (st == black) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1286 // 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
1287 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
1288 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1289 }
203
92a5c866bdfa Verify from/to pairs even if they might be explicitly whitelisted.
Carl Byington <carl@five-ten-sg.com>
parents: 194
diff changeset
1290 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
1291 // 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
1292 const char *loto = to_lower_string(rcptaddr);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1293 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
1294 free((void*)loto);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1295 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
1296 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
1297 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1298 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1299 }
263
e118fd2c6af0 fix unauthenticated rate limit bug for empty mail from; move unauthenticate rate limit checks after spam filtering
Carl Byington <carl@five-ten-sg.com>
parents: 259
diff changeset
1300 if (!priv.authenticated && dc.default_context->is_unauthenticated_limited(priv.mailaddr)) {
e118fd2c6af0 fix unauthenticated rate limit bug for empty mail from; move unauthenticate rate limit checks after spam filtering
Carl Byington <carl@five-ten-sg.com>
parents: 259
diff changeset
1301 int hourly, daily;
e118fd2c6af0 fix unauthenticated rate limit bug for empty mail from; move unauthenticate rate limit checks after spam filtering
Carl Byington <carl@five-ten-sg.com>
parents: 259
diff changeset
1302 incr_rcpt_count(priv.mailaddr, hourly, daily);
e118fd2c6af0 fix unauthenticated rate limit bug for empty mail from; move unauthenticate rate limit checks after spam filtering
Carl Byington <carl@five-ten-sg.com>
parents: 259
diff changeset
1303 int h_limit = dc.default_context->find_rate(priv.mailaddr);
e118fd2c6af0 fix unauthenticated rate limit bug for empty mail from; move unauthenticate rate limit checks after spam filtering
Carl Byington <carl@five-ten-sg.com>
parents: 259
diff changeset
1304 int d_limit = dc.default_context->get_daily_multiple() * h_limit;
e118fd2c6af0 fix unauthenticated rate limit bug for empty mail from; move unauthenticate rate limit checks after spam filtering
Carl Byington <carl@five-ten-sg.com>
parents: 259
diff changeset
1305 if (debug_syslog > 1) {
e118fd2c6af0 fix unauthenticated rate limit bug for empty mail from; move unauthenticate rate limit checks after spam filtering
Carl Byington <carl@five-ten-sg.com>
parents: 259
diff changeset
1306 char msg[maxlen];
e118fd2c6af0 fix unauthenticated rate limit bug for empty mail from; move unauthenticate rate limit checks after spam filtering
Carl Byington <carl@five-ten-sg.com>
parents: 259
diff changeset
1307 snprintf(msg, sizeof(msg), "unauthenticated address %s (%d %d recipients, %d %d limits)", priv.mailaddr, hourly, daily, h_limit, d_limit);
e118fd2c6af0 fix unauthenticated rate limit bug for empty mail from; move unauthenticate rate limit checks after spam filtering
Carl Byington <carl@five-ten-sg.com>
parents: 259
diff changeset
1308 my_syslog(&priv, msg);
e118fd2c6af0 fix unauthenticated rate limit bug for empty mail from; move unauthenticate rate limit checks after spam filtering
Carl Byington <carl@five-ten-sg.com>
parents: 259
diff changeset
1309 }
e118fd2c6af0 fix unauthenticated rate limit bug for empty mail from; move unauthenticate rate limit checks after spam filtering
Carl Byington <carl@five-ten-sg.com>
parents: 259
diff changeset
1310 if ((hourly > h_limit) || (daily > d_limit)){
e118fd2c6af0 fix unauthenticated rate limit bug for empty mail from; move unauthenticate rate limit checks after spam filtering
Carl Byington <carl@five-ten-sg.com>
parents: 259
diff changeset
1311 smfi_setreply(ctx, (char*)"550", (char*)"5.7.1", (char*)"recipient rate limit exceeded");
e118fd2c6af0 fix unauthenticated rate limit bug for empty mail from; move unauthenticate rate limit checks after spam filtering
Carl Byington <carl@five-ten-sg.com>
parents: 259
diff changeset
1312 return SMFIS_REJECT;
e118fd2c6af0 fix unauthenticated rate limit bug for empty mail from; move unauthenticate rate limit checks after spam filtering
Carl Byington <carl@five-ten-sg.com>
parents: 259
diff changeset
1313 }
e118fd2c6af0 fix unauthenticated rate limit bug for empty mail from; move unauthenticate rate limit checks after spam filtering
Carl Byington <carl@five-ten-sg.com>
parents: 259
diff changeset
1314 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1315 // 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
1316 // if needed to ensure we can accept replies
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1317 loto = to_lower_string(rcptaddr);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1318 WHITELISTERP w = con2.find_autowhite(loto, priv.mailaddr);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1319 // check if local part is too big
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1320 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
1321 const char *p = strchr(loto, '@');
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1322 int len = (p) ? p-loto : max_local_size;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1323 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
1324 // record it if we have a whitelister
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1325 if (w) {
231
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1326 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
1327 priv.delayer.push_back(dwp);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1328 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1329 else {
231
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1330 free((void*)loto); // or we free it here
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1331 }
179
8b86a894514d embedded dcc filtering
carl
parents: 178
diff changeset
1332
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1333 // accept the recipient
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1334 if (!con.get_content_filtering()) st = white;
179
8b86a894514d embedded dcc filtering
carl
parents: 178
diff changeset
1335
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1336 if (st == oksofar) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1337 // remember first content filtering context
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1338 if (con.get_content_filtering()) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1339 if (!priv.content_context) priv.content_context = &con;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1340 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
1341 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
1342 return SMFIS_TEMPFAIL;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1343 }
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
1344 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
1345 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
1346 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
1347 // 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
1348 if (priv.helo_uribl) {
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
1349 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
1350 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
1351 }
268
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1352 // content filtering implies also checking client reverse dns name on uribl (if enabled)
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
1353 if (priv.client_uribl) {
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
1354 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
1355 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
1356 }
268
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1357 // content filtering implies also checking mail from domain name on uribl (if enabled)
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
1358 if (priv.from_uribl) {
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
1359 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
1360 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
1361 }
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
1362 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
1363 char buf[maxlen];
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
1364 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
1365 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
1366 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
1367 }
192
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 // 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
1370 register_string(priv.env_to, rcptaddr, &con);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1371 priv.only_whites = false;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1372 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
1373 (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
1374 priv.want_dccgrey |= (priv.dccifd) && // have dcc interface and
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1375 (con.get_grey()); // want to use it for greylisting
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1376 priv.want_dccbulk |= (priv.dccifd) && // have dcc interface and
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1377 (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
1378 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1379 if (st == white) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1380 priv.have_whites = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1381 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1382 return SMFIS_CONTINUE;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1383 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1384
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1385 sfsistat mlfi_header(SMFICTX* ctx, char* headerf, char* headerv)
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1386 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1387 mlfiPriv &priv = *MLFIPRIV;
231
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1388 // 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
1389 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
1390 ((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
1391 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
1392 }
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
1393
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1394 // other headers are only needed for content filtering
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1395 if (priv.authenticated) return SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1396 if (priv.only_whites) return SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1397 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
1398 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
1399 return SMFIS_CONTINUE;
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1400 }
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1401
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1402 sfsistat mlfi_eoh(SMFICTX* ctx)
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1403 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1404 mlfiPriv &priv = *MLFIPRIV;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1405 // delayed autowhitelisting
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1406 while (!priv.delayer.empty()) {
231
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1407 DELAYWHITEP dwp = priv.delayer.front();
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1408 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
1409 if (priv.allow_autowhitelisting) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1410 WHITELISTERP w = dwp->get_w();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1411 CONTEXTP con2 = dwp->get_con();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1412 if (debug_syslog > 1) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1413 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1414 char msg[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1415 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
1416 my_syslog(&priv, msg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1417 }
231
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1418 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
1419 }
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1420 else {
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1421 if (debug_syslog > 1) {
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1422 char msg[maxlen];
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1423 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
1424 my_syslog(&priv, msg);
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1425 }
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1426 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
1427 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1428 delete dwp;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1429 priv.delayer.pop_front();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1430 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1431 // content filtering
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1432 if (priv.authenticated) return SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1433 if (priv.only_whites) return SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1434 if (priv.want_spamassassin) priv.assassin->mlfi_eoh();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1435 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
1436 return SMFIS_CONTINUE;
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1437 }
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1438
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1439 sfsistat mlfi_body(SMFICTX *ctx, u_char *data, size_t len)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1440 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1441 mlfiPriv &priv = *MLFIPRIV;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1442 if (priv.authenticated) return SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1443 if (priv.only_whites) return SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1444 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
1445 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
1446 priv.scanner->scan(data, len);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1447 return SMFIS_CONTINUE;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1448 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1449
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1450 sfsistat mlfi_eom(SMFICTX *ctx)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1451 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1452 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
1453 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
1454 const char *host = NULL;
242
d8ee4c97b9ab 64 bit fixes for libresolv.a
Carl Byington <carl@five-ten-sg.com>
parents: 238
diff changeset
1455 int32_t ip;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1456 // process end of message
190
004b855c6c1f fix null pointer dereference from missing HELO command
carl
parents: 188
diff changeset
1457 priv.eom = true;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1458 if (priv.authenticated || priv.only_whites) rc = SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1459 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1460 // assert env_to not empty, it contains the
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1461 // non-whitelisted folks that want content filtering
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1462 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
1463 bool grey = false;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1464 int bulk = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1465 if (priv.want_dccgrey || priv.want_dccbulk) priv.dccifd->mlfi_eom(grey, bulk);
178
d6531c702be3 embedded dcc filtering
carl
parents: 177
diff changeset
1466
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1467 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1468 string msg;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1469 string_set alive;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1470 bool random = false;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1471 int limit = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1472 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
1473 const char *rcpt = (*i).first;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1474 CONTEXT &con = *((*i).second);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1475 if (!con.acceptable_content(*priv.memory, score, bulk, msg)) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1476 // bad html tags or excessive hosts or
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1477 // 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
1478 smfi_delrcpt(ctx, (char*)rcpt);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1479 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1480 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1481 alive.insert(rcpt);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1482 random |= con.get_host_random();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1483 limit = max(limit, con.get_host_limit());
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1484 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1485 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1486 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
1487 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
1488 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
1489 const char *found;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1490 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
1491 if (found) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1492 // uribl style
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1493 snprintf(buf, sizeof(buf), fmt, host, found);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1494 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1495 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1496 // dnsbl style
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1497 char adr[sizeof "255.255.255.255 "];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1498 adr[0] = '\0';
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1499 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
1500 snprintf(buf, sizeof(buf), fmt, host, adr);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1501 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1502 msg = string(buf);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1503 rejecting = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1504 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1505 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1506 if (!rejecting) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1507 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
1508 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
1509 rc = SMFIS_TEMPFAIL;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1510 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1511 else rc = SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1512 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1513 else if (!priv.have_whites) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1514 // can reject the entire message
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1515 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
1516 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
1517 rc = SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1518 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1519 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1520 // 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
1521 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
1522 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
1523 smfi_delrcpt(ctx, (char*)rcpt);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1524 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1525 rc = SMFIS_CONTINUE;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1526 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1527 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1528 // reset for a new message on the same connection
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1529 mlfi_abort(ctx);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1530 return rc;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1531 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1532
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1533 sfsistat mlfi_abort(SMFICTX *ctx)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1534 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1535 mlfiPriv &priv = *MLFIPRIV;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1536 priv.reset();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1537 return SMFIS_CONTINUE;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1538 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1539
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1540 sfsistat mlfi_close(SMFICTX *ctx)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1541 {
192
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carl
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1542 mlfiPriv *priv = MLFIPRIV;
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1543 if (!priv) return SMFIS_CONTINUE;
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1544 delete priv;
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1545 smfi_setpriv(ctx, NULL);
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1546 return SMFIS_CONTINUE;
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carl
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1547 }
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carl
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1548
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carl
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1549 struct smfiDesc smfilter =
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1550 {
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Carl Byington <carl@five-ten-sg.com>
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1551 (char*)"DNSBL", // filter name
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1552 SMFI_VERSION, // version code -- do not change
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1553 SMFIF_DELRCPT, // flags
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1554 mlfi_connect, // connection info filter
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