annotate src/dnsbl.cpp @ 410:6b03435868cb stable-6-0-55

require 3 dots in bare ip addresses
author Carl Byington <carl@five-ten-sg.com>
date Sun, 16 Apr 2017 09:12:08 -0700
parents e018ed19a1cc
children d5a1ed33d3ae
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1 /*
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2
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3 Copyright (c) 2013 Carl Byington - 510 Software Group, released under
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c7fc218686f5 gpl3, block mail to recipients that cannot reply
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4 the GPL version 3 or any later version at your choice available at
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5 http://www.gnu.org/licenses/gpl-3.0.txt
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6
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7 Based on a sample milter Copyright (c) 2000-2003 Sendmail, Inc. and its
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8 suppliers. Inspired by the DCC by Rhyolite Software
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9
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10 -b port The port used to talk to the dcc interface daemon
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11 -r port The port used to talk to our internal dns resolver processes
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12 -p port The port through which the MTA will connect to this milter.
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13 -t sec The timeout value.
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14 -c Check the config, and print a copy to stdout. Don't start the
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15 milter or do anything with the socket.
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16 -s Stress test by loading and deleting the current config in a loop.
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17 -d level set the debug level
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18 -e f|t Print the results of looking up from address f and to address
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19 t in the current config
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20
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21 */
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22
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23
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24 // from sendmail sample
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25 #include <sys/types.h>
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26 #include <sys/stat.h>
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27 #include <errno.h>
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28 #include <sysexits.h>
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29 #include <unistd.h>
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30
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31 // needed for socket io
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32 #include <sys/ioctl.h>
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33 #include <net/if.h>
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34 #include <arpa/inet.h>
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35 #include <netinet/in.h>
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36 #include <netinet/tcp.h>
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37 #include <netdb.h>
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38 #include <sys/socket.h>
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39 #include <sys/un.h>
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40
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41 // needed for thread
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42 #include <pthread.h>
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43
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44 // needed for std c++ collections
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45 #include <set>
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46 #include <map>
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47 #include <list>
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48
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49 // for the dns resolver
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50 #include <netinet/in.h>
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51 #include <arpa/nameser.h>
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52 #include <resolv.h>
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53
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54 // misc stuff needed here
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55 #include <ctype.h>
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56 #include <syslog.h>
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57 #include <pwd.h>
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58 #include <sys/wait.h> /* header for waitpid() and various macros */
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59 #include <signal.h> /* header for signal functions */
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60
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61 #include "includes.h"
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62
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63 #ifndef HAVE_DAEMON
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64 #include "daemon.h"
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65 #include "daemon.c"
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66 #endif
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68 #ifndef HAVE_MEMRCHR
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69 void *memrchr(const void *a, int c, size_t len);
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70 void *memrchr(const void *a, int c, size_t len) {
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71 const unsigned char *p = (const unsigned char *)a;
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72 for (p += len-1; (const void *)p >= a; p--)
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73 if (*p == c)
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74 return (void *)p;
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75 return (void *)0;
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76 }
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77 #endif
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78
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79 extern "C" {
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80 sfsistat mlfi_connect(SMFICTX *ctx, char *hostname, _SOCK_ADDR *hostaddr);
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81 sfsistat mlfi_helo(SMFICTX * ctx, char *helohost);
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82 sfsistat mlfi_envfrom(SMFICTX *ctx, char **argv);
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83 sfsistat mlfi_envrcpt(SMFICTX *ctx, char **argv);
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84 sfsistat mlfi_header(SMFICTX* ctx, char* headerf, char* headerv);
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85 sfsistat mlfi_body(SMFICTX *ctx, u_char *data, size_t len);
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86 sfsistat mlfi_eom(SMFICTX *ctx);
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87 sfsistat mlfi_abort(SMFICTX *ctx);
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88 sfsistat mlfi_close(SMFICTX *ctx);
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89 void sig_chld(int signo);
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90 }
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91
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92 int debug_syslog = 0;
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93 bool syslog_opened = false;
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94 bool use_syslog = true; // false to printf
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95 bool loader_run = true; // used to stop the config loader thread
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96 CONFIG *config = NULL; // protected by the config_mutex
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97 int generation = 0; // protected by the config_mutex
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98 const int maxlen = 1000; // used for snprintf buffers
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99 regex_t srs_pattern; // used to detect srs coding in mail addresses
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100 regex_t prvs_pattern; // used to detect prvs coding in mail addresses
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101 regex_t dkim_r_pattern; // used to detect dkim signatures authenticated by the upstream opendkim milter
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102 regex_t dkim_s_pattern; // used to detect dkim signatures generated by the upstream opendkim milter
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103 regex_t from_pattern; // used to extract the senders mail domain from the body from: header
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104
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105 pthread_mutex_t config_mutex;
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106 pthread_mutex_t syslog_mutex;
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107 pthread_mutex_t resolve_mutex;
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108 pthread_mutex_t fd_pool_mutex;
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109 pthread_mutex_t rate_mutex;
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110
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111 std::set<int> fd_pool;
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112 int NULL_SOCKET = -1;
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113 const time_t ERROR_SOCKET_TIME = 60; // number of seconds between attempts to open a socket to the dns resolver process
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114 const char *resolver_port = NULL; // unix domain socket to talk to the dns resolver process
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115 int resolver_socket = NULL_SOCKET; // socket used to listen for resolver requests
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116 const char *dccifd_port = NULL; // unix domain socket to talk to the dcc interface daemon
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117 time_t last_error_time = 0;
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118 int resolver_sock_count = 0; // protected with fd_pool_mutex
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119 int resolver_pool_size = 0; // protected with fd_pool_mutex
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120 rates rcpt_hourly_counts; // protected with rate_mutex
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121 rates rcpt_daily_counts; // protected with rate_mutex
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122 auth_addresses auth_hourly_addresses; // protected with rate_mutex
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123 auth_addresses auth_daily_addresses; // protected with rate_mutex
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126
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127 ns_map::~ns_map() {
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128 for (string_map::iterator i=ns_host.begin(); i!=ns_host.end(); i++) {
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129 const char *x = (*i).first;
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130 const char *y = (*i).second;
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131 free((void*)x);
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132 free((void*)y);
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133 }
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134 ns_ip.clear();
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135 ns_host.clear();
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136 }
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138
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139 void ns_map::add(const char *name, const char *refer) {
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140 string_map::iterator i = ns_host.find(name);
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141 if (i != ns_host.end()) return;
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142 char *x = strdup(name);
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143 char *y = strdup(refer);
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144 ns_ip[x] = 0;
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145 ns_host[x] = y;
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146
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147 }
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148
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149 // packed structure to allow a single socket write to dump the
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150 // length and the following answer. The packing attribute is gcc specific.
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151 struct glommer {
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152 size_t length;
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153 #ifdef NS_PACKETSZ
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154 u_char answer[NS_PACKETSZ*8]; // with a resolver, we return resolver answers
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155 #else
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156 uint32_t answer; // without a resolver, we return a single ipv4 address in network byte order, 0 == no answer
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157 #endif
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158 } __attribute__ ((packed));
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159
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160
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161 ////////////////////////////////////////////////
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162 // helper to manipulate recipient counts
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163 //
255
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164 void incr_rcpt_count(const char *user, int &hourly, int &daily);
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165 void incr_rcpt_count(const char *user, int &hourly, int &daily) {
192
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166 pthread_mutex_lock(&rate_mutex);
278
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167 rates::iterator i = rcpt_hourly_counts.find(user);
255
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168 hourly = 1;
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169 if (i == rcpt_hourly_counts.end()) {
192
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170 user = strdup(user);
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171 rcpt_hourly_counts[user] = hourly;
192
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172 }
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173 else {
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174 hourly = ++((*i).second);
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175 }
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176
278
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177 rates::iterator j = rcpt_daily_counts.find(user);
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178 daily = 1;
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179 if (j == rcpt_daily_counts.end()) {
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180 user = strdup(user);
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181 rcpt_daily_counts[user] = daily;
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182 }
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183 else {
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184 daily = ++((*j).second);
192
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185 }
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186 pthread_mutex_unlock(&rate_mutex);
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187 }
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188
278
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189
382
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190 void add_auth_address(const char *user, int &hourly, int &daily, uint32_t ip);
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191 void add_auth_address(const char *user, int &hourly, int &daily, uint32_t ip) {
278
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192 pthread_mutex_lock(&rate_mutex);
280
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193 auth_addresses::iterator i = auth_hourly_addresses.find(user);
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194 if (i == auth_hourly_addresses.end()) {
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195 user = strdup(user);
382
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196 auth_hourly_addresses[user] = new uint32_t_set;
278
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197 auth_hourly_addresses[user]->insert(ip);
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198 hourly = 1;
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199 }
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200 else {
382
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201 uint32_t_set::iterator k = ((*i).second)->find(ip);
280
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202 if (k == ((*i).second)->end()) ((*i).second)->insert(ip);
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203 hourly = ((*i).second)->size();
278
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204 }
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205
280
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206 auth_addresses::iterator j = auth_daily_addresses.find(user);
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207 if (j == auth_daily_addresses.end()) {
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208 user = strdup(user);
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209 auth_daily_addresses[user] = new uint32_t_set;
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210 auth_daily_addresses[user]->insert(ip);
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211 daily = 1;
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212 }
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213 else {
382
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214 uint32_t_set::iterator k = ((*j).second)->find(ip);
280
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215 if (k == ((*j).second)->end()) ((*j).second)->insert(ip);
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216 daily = ((*j).second)->size();
278
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217 }
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218 pthread_mutex_unlock(&rate_mutex);
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219 }
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220
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221 ////////////////////////////////////////////////
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222 // helper to discard the strings held by a context_map
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223 //
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224 void discard(context_map &cm);
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225 void discard(context_map &cm) {
192
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226 for (context_map::iterator i=cm.begin(); i!=cm.end(); i++) {
214
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227 const char *x = (*i).first;
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228 free((void*)x);
192
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229 }
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230 cm.clear();
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231 }
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232
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233
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234 ////////////////////////////////////////////////
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235 // helper to register a string in a context_map
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236 //
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237 void register_string(context_map &cm, const char *name, CONTEXT *con);
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238 void register_string(context_map &cm, const char *name, CONTEXT *con) {
192
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239 context_map::iterator i = cm.find(name);
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240 if (i != cm.end()) return;
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241 char *x = strdup(name);
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242 cm[x] = con;
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243 }
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244
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245
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246 ////////////////////////////////////////////////
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247 // disconnect the fd from the dns resolver process
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248 //
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249 void my_disconnect(int sock, bool decrement = true);
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250 void my_disconnect(int sock, bool decrement) {
192
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251 if (sock != NULL_SOCKET) {
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252 if (decrement) {
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253 pthread_mutex_lock(&fd_pool_mutex);
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254 resolver_sock_count--;
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255 pthread_mutex_unlock(&fd_pool_mutex);
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256 }
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257 shutdown(sock, SHUT_RDWR);
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258 close(sock);
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259 }
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260 }
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261
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262
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263 ////////////////////////////////////////////////
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264 // return fd connected to the dns resolver process
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265 //
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266 int my_connect();
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267 int my_connect() {
192
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268 // if we have had recent errors, don't even try to open the socket
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269 if ((time(NULL) - last_error_time) < ERROR_SOCKET_TIME) return NULL_SOCKET;
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270
192
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271 // nothing recent, maybe this time it will work
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272 int sock = NULL_SOCKET;
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273 sockaddr_un server;
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274 memset(&server, '\0', sizeof(server));
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275 server.sun_family = AF_UNIX;
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276 strncpy(server.sun_path, resolver_port, sizeof(server.sun_path)-1);
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277 sock = socket(AF_UNIX, SOCK_STREAM, 0);
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278 if (sock != NULL_SOCKET) {
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279 bool rc = (connect(sock, (sockaddr *)&server, sizeof(server)) == 0);
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280 if (!rc) {
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281 my_disconnect(sock, false);
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282 sock = NULL_SOCKET;
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283 last_error_time = time(NULL);
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284 }
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285 }
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286 else last_error_time = time(NULL);
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287 if (sock != NULL_SOCKET) {
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288 pthread_mutex_lock(&fd_pool_mutex);
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289 resolver_sock_count++;
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290 pthread_mutex_unlock(&fd_pool_mutex);
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291 }
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292 return sock;
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293 }
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294
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295
236
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296 ////////////////////////////////////////////////
381
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297 // Ask a dns question and get an A record answer in network byte order.
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298 // We don't try very hard, just using the default resolver retry settings.
236
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299 // If we cannot get an answer, we just accept the mail.
381
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300 // If the qtype is ns_t_txt, the answer is placed in txt_answer which
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301 // must be non-null, and the return value can be ignored.
382
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302 // A null string is returned in txt_answer in the case of errors.
381
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diff changeset
303 // If the qtype is ns_t_a, the ip address is returned in network byte order.
382
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diff changeset
304 // IP address 0 is returned in case of errors.
236
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diff changeset
305 //
381
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diff changeset
306 uint32_t dns_interface(mlfiPriv &priv, const char *question, int qtype, bool maybe_ip, ns_map *nameservers, char *txt_answer, size_t txt_size) {
382
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diff changeset
307 if (txt_answer) txt_answer[0] = '\0'; // return null string if there are no txt answers
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diff changeset
308
236
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diff changeset
309 // tell sendmail we are still working
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diff changeset
310 #if _FFR_SMFI_PROGRESS
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diff changeset
311 if (priv.eom) smfi_progress(priv.ctx);
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diff changeset
312 #endif
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diff changeset
313
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diff changeset
314 // this part can be done without locking the resolver mutex. Each
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diff changeset
315 // milter thread is talking over its own socket to a separate resolver
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diff changeset
316 // process, which does the actual dns resolution.
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diff changeset
317 if (priv.err) return 0; // cannot ask more questions on this socket.
381
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parents: 379
diff changeset
318 if (maybe_ip && (qtype == ns_t_a)) {
409
e018ed19a1cc require 3 dots in bare ip addresses
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parents: 402
diff changeset
319 int c = 0;
410
6b03435868cb require 3 dots in bare ip addresses
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parents: 409
diff changeset
320 const char* q = question;
409
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parents: 402
diff changeset
321 while (*q) {
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diff changeset
322 if (*q == '.') c++;
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diff changeset
323 q++;
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diff changeset
324 }
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diff changeset
325 // might be a bare IPv4 address, try this first to avoid dns lookups that may not be needed
236
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diff changeset
326 in_addr ip;
409
e018ed19a1cc require 3 dots in bare ip addresses
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diff changeset
327 if ((c == 3) && inet_aton(question, &ip)) {
252
836b7f2357f9 need ntohl() before using masks that are defined in host byte order
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diff changeset
328 return ip.s_addr;
236
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diff changeset
329 }
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diff changeset
330 }
381
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diff changeset
331 int8_t qt = qtype;
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diff changeset
332 priv.my_write((const char *)&qt, 1);// write the query type
328
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parents: 327
diff changeset
333 size_t n = strlen(question);
236
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diff changeset
334 if (question[n-1] == '.') {
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diff changeset
335 priv.my_write(question, n+1); // write the question including the null terminator
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diff changeset
336 }
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diff changeset
337 else {
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diff changeset
338 priv.my_write(question, n); // write the question
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diff changeset
339 priv.my_write(".", 2); // and the fully qualified . terminator and null string terminator
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diff changeset
340 }
381
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diff changeset
341
236
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diff changeset
342 glommer glom;
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diff changeset
343 char *buf = (char *)&glom;
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diff changeset
344 priv.my_read(buf, sizeof(glom.length));
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diff changeset
345 buf += sizeof(glom.length);
390
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parents: 389
diff changeset
346 #ifdef RESOLVER_DEBUG
236
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diff changeset
347 char text[1000];
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diff changeset
348 snprintf(text, sizeof(text), "dns_interface() wrote question %s and has answer length %d", question, glom.length);
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diff changeset
349 my_syslog(text);
390
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parents: 389
diff changeset
350 #endif
236
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diff changeset
351 if (glom.length == 0) return 0;
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diff changeset
352 if (glom.length > sizeof(glom.answer)) {
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diff changeset
353 priv.err = true;
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diff changeset
354 return 0; // cannot process overlarge answers
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diff changeset
355 }
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diff changeset
356 priv.my_read(buf, glom.length);
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diff changeset
357
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diff changeset
358 #ifdef NS_PACKETSZ
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diff changeset
359 // now we need to lock the resolver mutex to keep the milter threads from
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diff changeset
360 // stepping on each other while parsing the dns answer.
252
836b7f2357f9 need ntohl() before using masks that are defined in host byte order
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parents: 249
diff changeset
361 uint32_t ret_address = 0;
236
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diff changeset
362 pthread_mutex_lock(&resolve_mutex);
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diff changeset
363 // parse the answer
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diff changeset
364 ns_msg handle;
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diff changeset
365 ns_rr rr;
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diff changeset
366 if (ns_initparse(glom.answer, glom.length, &handle) == 0) {
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parents: 235
diff changeset
367 // look for ns names
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parents: 235
diff changeset
368 if (nameservers) {
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diff changeset
369 ns_map &ns = *nameservers;
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diff changeset
370 int rrnum = 0;
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diff changeset
371 while (ns_parserr(&handle, ns_s_ns, rrnum++, &rr) == 0) {
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diff changeset
372 if (ns_rr_type(rr) == ns_t_ns) {
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diff changeset
373 char nam[NS_MAXDNAME+1];
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diff changeset
374 char *n = nam;
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diff changeset
375 const u_char *p = ns_rr_rdata(rr);
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diff changeset
376 while (((n-nam) < NS_MAXDNAME) && ((size_t)(p-glom.answer) < glom.length) && *p) {
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diff changeset
377 size_t s = *(p++);
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diff changeset
378 if (s > 191) {
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diff changeset
379 // compression pointer
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parents: 235
diff changeset
380 s = (s-192)*256 + *(p++);
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diff changeset
381 if (s >= glom.length) break; // pointer outside bounds of answer
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parents: 235
diff changeset
382 p = glom.answer + s;
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parents: 235
diff changeset
383 s = *(p++);
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diff changeset
384 }
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parents: 235
diff changeset
385 if (s > 0) {
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parents: 235
diff changeset
386 if ((size_t)(n-nam) >= (NS_MAXDNAME-s)) break; // destination would overflow name buffer
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parents: 235
diff changeset
387 if ((size_t)(p-glom.answer) >= (glom.length-s)) break; // source outside bounds of answer
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parents: 235
diff changeset
388 memcpy(n, p, s);
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parents: 235
diff changeset
389 n += s;
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diff changeset
390 p += s;
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parents: 235
diff changeset
391 *(n++) = '.';
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parents: 235
diff changeset
392 }
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parents: 235
diff changeset
393 }
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parents: 235
diff changeset
394 if (n-nam) n--; // remove trailing .
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parents: 235
diff changeset
395 *n = '\0'; // null terminate it
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parents: 235
diff changeset
396 ns.add(nam, question); // ns host to lookup later
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parents: 235
diff changeset
397 }
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
398 }
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
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parents: 235
diff changeset
399 rrnum = 0;
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
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parents: 235
diff changeset
400 while (ns_parserr(&handle, ns_s_ar, rrnum++, &rr) == 0) {
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parents: 235
diff changeset
401 if (ns_rr_type(rr) == ns_t_a) {
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parents: 235
diff changeset
402 char* nam = (char*)ns_rr_name(rr);
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
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parents: 235
diff changeset
403 ns_mapper::iterator i = ns.ns_ip.find(nam);
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parents: 235
diff changeset
404 if (i != ns.ns_ip.end()) {
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parents: 235
diff changeset
405 // we want this ip address
252
836b7f2357f9 need ntohl() before using masks that are defined in host byte order
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parents: 249
diff changeset
406 uint32_t address;
236
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parents: 235
diff changeset
407 memcpy(&address, ns_rr_rdata(rr), sizeof(address));
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parents: 235
diff changeset
408 ns.ns_ip[nam] = address;
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parents: 235
diff changeset
409 }
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parents: 235
diff changeset
410 }
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
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parents: 235
diff changeset
411 }
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
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parents: 235
diff changeset
412 }
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
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parents: 235
diff changeset
413 int rrnum = 0;
381
879a470c6ac3 fetch spf txt records for required dkim signers
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parents: 379
diff changeset
414 if (qtype == ns_t_a) {
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
415 while (ns_parserr(&handle, ns_s_an, rrnum++, &rr) == 0) {
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
416 if (ns_rr_type(rr) == qtype) {
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
417 uint32_t address;
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
418 memcpy(&address, ns_rr_rdata(rr), sizeof(address));
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
419 ret_address = address;
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
420 }
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
421 }
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
422 }
382
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
423 if ((qtype == ns_t_txt) && (txt_answer) && (txt_size > 7)) {
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
424 txt_answer[0] = '\0'; // return null string if there are no txt answers
381
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
425 txt_size--; // allow room for terminating null;
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
426 while (ns_parserr(&handle, ns_s_an, rrnum++, &rr) == 0) {
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
427 if (ns_rr_type(rr) == qtype) {
384
7b7066a51c33 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 382
diff changeset
428 size_t offset = 0;
381
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
429 size_t rdlen = ns_rr_rdlen(rr);
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
430 const unsigned char *rdata = ns_rr_rdata(rr);
390
bcef093b1ba6 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 389
diff changeset
431 #ifdef RESOLVER_DEBUG
385
be7355b47051 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 384
diff changeset
432 char text[1000];
be7355b47051 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 384
diff changeset
433 snprintf(text, sizeof(text), "found txt record rdlen = %d", rdlen);
be7355b47051 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 384
diff changeset
434 my_syslog(text);
390
bcef093b1ba6 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 389
diff changeset
435 #endif
381
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
436 while ((offset < txt_size) && rdlen) {
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
437 size_t slen = size_t(*(rdata++));
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
438 rdlen--;
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
439 size_t m = min(slen, rdlen);
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
440 m = min(m, txt_size-offset);
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
441 memcpy(txt_answer+offset, rdata, m);
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
442 offset += m;
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
443 rdata += m;
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
444 rdlen -= m;
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
445 }
384
7b7066a51c33 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 382
diff changeset
446 txt_answer[offset] = '\0'; // trailing null
390
bcef093b1ba6 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 389
diff changeset
447 #ifdef RESOLVER_DEBUG
385
be7355b47051 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 384
diff changeset
448 snprintf(text, sizeof(text), "found txt record %s", txt_answer);
be7355b47051 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 384
diff changeset
449 my_syslog(text);
390
bcef093b1ba6 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 389
diff changeset
450 #endif
384
7b7066a51c33 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 382
diff changeset
451 if (strncasecmp(txt_answer, "v=spf1 ", 7) == 0) break;
381
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
452 }
382
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
453 }
390
bcef093b1ba6 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 389
diff changeset
454 if (strncasecmp(txt_answer, "v=spf1 ", 7) != 0) {
bcef093b1ba6 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 389
diff changeset
455 txt_answer[0] = '\0'; // return null string if there are no spf1 txt answers
bcef093b1ba6 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 389
diff changeset
456 }
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
457 }
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
458 }
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
459 pthread_mutex_unlock(&resolve_mutex);
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
460 #ifdef RESOLVER_DEBUG
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
461 snprintf(text, sizeof(text), "dns_interface() found ip %d", ret_address);
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
462 my_syslog(text);
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
463 #endif
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
464 return ret_address;
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
465 #else
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
466 return glom.answer;
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
467 #endif
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
468 }
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
469
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
470
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
471 ////////////////////////////////////////////////
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
472 // lookup a hostname on the uribl
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
473 //
270
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
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parents: 268
diff changeset
474 // if we find hostname on the uribl, return true and point found to hostname
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
475 // as a string registered in hosts.
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
476 // otherwise, return false and preserve the value of found.
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
477 //
270
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
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parents: 268
diff changeset
478 bool uriblookup(mlfiPriv &priv, string_set &hosts, const char *hostname, const char *&found) ;
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
479 bool uriblookup(mlfiPriv &priv, string_set &hosts, const char *hostname, const char *&found) {
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
480 char buf[maxlen];
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
481 snprintf(buf, sizeof(buf), "%s.%s.", hostname, priv.uribl_suffix);
381
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
482 uint32_t ip = ntohl(dns_interface(priv, buf, ns_t_a));
270
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
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parents: 268
diff changeset
483 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
484 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
485 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
486 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
487 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
488 }
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
489 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
490 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
491 }
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
492 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
493 }
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
494
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
495
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
496 ////////////////////////////////////////////////
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
497 // 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
498 // -------------
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
499 // hostname MUST not have a trailing dot. Find the tld part of
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
500 // the hostname, and add one more level. If that is listed on
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
501 // the uribl, return true and point found to the part of the
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
502 // hostname that we found as a string registered in hosts.
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
503 // 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
504 //
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
505 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
506 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
507 in_addr ip;
270
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
508 if (inet_aton(hostname, &ip)) return false; // don't check ip addresses in uribls
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
509 const char* components[maxlen];
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
510 int n = 0; // number of components in the hostname
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
511 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
512 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
513 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
514 if (!c) break;
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
515 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
516 }
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
517 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
518 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
519 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
520 string_set::iterator xtlds = tlds->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
521 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
522 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
523 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
524 const char* name = components[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
525 bool rc = 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
526 string_set::iterator tt = tldnots->find(name);
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
527 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
528 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
529 }
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
530 else {
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
531 tt = tldwilds->find(name);
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
532 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
533 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
534 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
535 name = components[i-2];
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
536 }
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
537 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
538 }
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
539 else {
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
540 tt = tlds->find(name);
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
541 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
542 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
543 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
544 name = components[i-1];
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
545 }
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
546 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
547 }
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
548 }
f92f24950bd3 Use mozilla prefix list for tld checking, Enable surbl/uribl/dbl rhs lists
Carl Byington <carl@five-ten-sg.com>
parents: 268
diff changeset
549 }
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
550 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
551 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
552 }
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
553 }
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
554 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
555 }
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
556
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
557
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
558 mlfiPriv::mlfiPriv() {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
559 pthread_mutex_lock(&config_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
560 pc = config;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
561 pc->reference_count++;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
562 pthread_mutex_unlock(&config_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
563 get_fd();
230
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
564 ctx = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
565 eom = false;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
566 ip = 0;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
567 helo = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
568 mailaddr = NULL;
350
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
569 origaddr = NULL;
321
e172dc10fe24 add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 311
diff changeset
570 fromaddr = NULL;
e172dc10fe24 add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 311
diff changeset
571 header_count = 0;
322
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
572 dkim_ok = true;
230
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
573 queueid = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
574 authenticated = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
575 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
576 client_dns_name = NULL;
268
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
577 client_dns_forged = false;
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
578 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
579 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
580 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
581 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
582 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
583 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
584 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
585 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
586 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
587 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
588 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
589 memory = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
590 scanner = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
591 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
592 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
593 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
594 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
595 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
596 assassin = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
597 dccifd = NULL;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
598 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
599
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
600 mlfiPriv::~mlfiPriv() {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
601 return_fd();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
602 pthread_mutex_lock(&config_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
603 pc->reference_count--;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
604 bool last = (!pc->reference_count) && (pc != config);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
605 pthread_mutex_unlock(&config_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
606 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
607 if (helo) free((void*)helo);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
608 reset(true);
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
609 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
610
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
611 void mlfiPriv::reset(bool final) {
194
688ec12a3c0c delay autowhitelisting to avoid out of office reply bots
carl
parents: 193
diff changeset
612 while (!delayer.empty()) {
231
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
613 DELAYWHITEP dwp = delayer.front();
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
614 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
615 if (loto) free((void*)loto);
193
3ea79ef741a0 delay autowhitelisting to avoid out of office reply bots
carl
parents: 192
diff changeset
616 delete dwp;
3ea79ef741a0 delay autowhitelisting to avoid out of office reply bots
carl
parents: 192
diff changeset
617 delayer.pop_front();
3ea79ef741a0 delay autowhitelisting to avoid out of office reply bots
carl
parents: 192
diff changeset
618 }
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
619 if (mailaddr) free((void*)mailaddr);
350
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
620 if (origaddr) free((void*)origaddr);
321
e172dc10fe24 add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 311
diff changeset
621 if (fromaddr) free((void*)fromaddr);
257
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
622 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
623 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
624 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
625 if (client_dns_name) free((void*)client_dns_name);
326
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
626 discard(dkim_signers);
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
627 discard(hosts_uribl);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
628 delayer.clear();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
629 discard(env_to);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
630 if (memory) delete memory;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
631 if (scanner) delete scanner;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
632 if (assassin) delete assassin;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
633 if (dccifd) delete dccifd;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
634 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
635 ctx = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
636 eom = false;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
637 mailaddr = NULL;
350
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
638 origaddr = NULL;
321
e172dc10fe24 add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 311
diff changeset
639 fromaddr = NULL;
e172dc10fe24 add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 311
diff changeset
640 header_count = 0;
322
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
641 dkim_ok = true;
230
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
642 queueid = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
643 authenticated = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
644 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
645 client_dns_name = NULL;
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
646 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
647 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
648 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
649 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
650 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
651 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
652 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
653 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
654 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
655 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
656 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
657 memory = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
658 scanner = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
659 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
660 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
661 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
662 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
663 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
664 assassin = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
665 dccifd = NULL;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
666 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
667 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
668
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
669 void mlfiPriv::get_fd() {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
670 err = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
671 fd = NULL_SOCKET;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
672 int result = pthread_mutex_lock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
673 if (!result) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
674 std::set<int>::iterator i;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
675 i = fd_pool.begin();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
676 if (i != fd_pool.end()) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
677 // have at least one fd in the pool
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
678 err = false;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
679 fd = *i;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
680 fd_pool.erase(fd);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
681 resolver_pool_size--;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
682 pthread_mutex_unlock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
683 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
684 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
685 // pool is empty, get a new fd
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
686 pthread_mutex_unlock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
687 fd = my_connect();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
688 err = (fd == NULL_SOCKET);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
689 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
690 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
691 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
692 // cannot lock the pool, just get a new fd
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
693 fd = my_connect();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
694 err = (fd == NULL_SOCKET);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
695 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
696 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
697
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
698 void mlfiPriv::return_fd() {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
699 if (err) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
700 // 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
701 my_disconnect(fd);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
702 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
703 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
704 int result = pthread_mutex_lock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
705 if (!result) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
706 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
707 // return the fd to the pool
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
708 fd_pool.insert(fd);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
709 resolver_pool_size++;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
710 pthread_mutex_unlock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
711 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
712 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
713 // 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
714 // 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
715 pthread_mutex_unlock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
716 my_disconnect(fd);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
717 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
718 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
719 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
720 // 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
721 my_disconnect(fd);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
722 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
723 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
724 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
725
177
a4d313c2460b start embedded dcc filtering
carl
parents: 174
diff changeset
726 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
727 if (err) return 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
728 size_t rs = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
729 while (len) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
730 size_t ws = write(fd, buf, len);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
731 if (ws > 0) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
732 rs += ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
733 len -= ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
734 buf += ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
735 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
736 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
737 // peer closed the socket!
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
738 rs = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
739 err = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
740 break;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
741 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
742 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
743 return rs;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
744 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
745
177
a4d313c2460b start embedded dcc filtering
carl
parents: 174
diff changeset
746 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
747 if (err) return 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
748 size_t rs = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
749 while (len) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
750 size_t ws = read(fd, buf, len);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
751 if (ws > 0) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
752 rs += ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
753 len -= ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
754 buf += ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
755 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
756 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
757 // peer closed the socket!
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
758 rs = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
759 err = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
760 break;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
761 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
762 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
763 return rs;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
764 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
765
377
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
766 const char *mlfiPriv::check_uribl_signers() {
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
767 if (uribl_suffix) {
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
768 for (string_set::iterator s=dkim_signers.begin(); s!=dkim_signers.end(); s++) {
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
769 if (check_uribl(*this, hosts_uribl, *s, host_uribl)) return host_uribl;
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
770 }
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
771 }
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
772 return NULL;
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
773 }
7fd39f029936 reject if dkim signer is listed on surbl
Carl Byington <carl@five-ten-sg.com>
parents: 366
diff changeset
774
350
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
775 void mlfiPriv::need_content_filter(CONTEXT &con) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
776 if (!memory) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
777 // first recipient that needs content filtering sets
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
778 // 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
779 memory = new recorder(this, con.get_html_tags(), con.get_content_tlds(), con.get_content_tldwilds(), con.get_content_tldnots());
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
780 scanner = new url_scanner(memory);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
781 content_suffix = con.get_content_suffix();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
782 content_message = con.get_content_message();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
783 uribl_suffix = con.get_uribl_suffix();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
784 uribl_message = con.get_uribl_message();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
785 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
786 // 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
787 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
788 if (helo) {
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
789 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
790 }
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
791 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
792 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
793 }
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
794 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
795 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
796 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
797 }
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
798 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
799 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
800 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
801
186
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
802
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
803 mlfiPriv* fetch_priv_from_ctx(SMFICTX *ctx);
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
804 mlfiPriv* fetch_priv_from_ctx(SMFICTX *ctx)
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
805 {
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
806 mlfiPriv *priv = (struct mlfiPriv *)smfi_getpriv(ctx);
187
f0eda59e8afd fix null pointer dereference from missing HELO command
carl
parents: 186
diff changeset
807 priv->ctx = ctx;
186
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
808 return priv;
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
809 }
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
810 #define MLFIPRIV fetch_priv_from_ctx(ctx)
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
811
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
812
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
813
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
814 ////////////////////////////////////////////////
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
815 // syslog a message
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
816 //
310
802e2b779ed1 enable smtp verify logging
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
817 void my_syslog(const char *queueid, const char *text) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
818 char buf[maxlen];
311
f5547e7b3a09 enable smtp verify logging
Carl Byington <carl@five-ten-sg.com>
parents: 310
diff changeset
819 if (queueid && queueid[0]) {
310
802e2b779ed1 enable smtp verify logging
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
820 snprintf(buf, sizeof(buf), "%s: %s", queueid, text);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
821 text = buf;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
822 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
823 if (use_syslog) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
824 pthread_mutex_lock(&syslog_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
825 if (!syslog_opened) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
826 openlog("dnsbl", LOG_PID, LOG_MAIL);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
827 syslog_opened = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
828 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
829 syslog(LOG_NOTICE, "%s", text);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
830 pthread_mutex_unlock(&syslog_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
831 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
832 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
833 printf("%s \n", text);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
834 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
835 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
836
310
802e2b779ed1 enable smtp verify logging
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
837 void my_syslog(mlfiPriv *priv, const char *text) {
802e2b779ed1 enable smtp verify logging
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
838 if (priv) my_syslog(priv->queueid, text);
802e2b779ed1 enable smtp verify logging
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
839 else my_syslog((const char *)NULL, text);
802e2b779ed1 enable smtp verify logging
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
840 }
802e2b779ed1 enable smtp verify logging
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
841
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
842 void my_syslog(mlfiPriv *priv, const string text) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
843 if (debug_syslog > 3) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
844 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
845 strncpy(buf, text.c_str(), sizeof(buf));
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
846 buf[maxlen-1] = '\0'; // ensure null termination
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
847 my_syslog(priv, buf);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
848 }
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
849 }
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
850
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
851 void my_syslog(const char *text) {
310
802e2b779ed1 enable smtp verify logging
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
852 my_syslog((const char *)NULL, text);
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
853 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
854
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
855
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
856 ////////////////////////////////////////////////
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
857 // 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
858 // write the result back to the socket.
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
859
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
860 void process_resolver_requests(int socket);
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
861 void process_resolver_requests(int socket) {
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
862 #ifdef NS_MAXDNAME
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
863 char question[NS_MAXDNAME];
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
864 #else
389
aa9795b407e8 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 388
diff changeset
865 char question[1025];
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
866 #endif
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
867 glommer glom;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
868
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
869 int maxq = sizeof(question);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
870 while (true) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
871 // read a question
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
872 int rs = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
873 while (rs < maxq) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
874 int ns = read(socket, question+rs, maxq-rs);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
875 if (ns > 0) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
876 rs += ns;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
877 if (question[rs-1] == '\0') {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
878 // last byte read was the null terminator, we are done
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
879 break;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
880 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
881 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
882 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
883 // peer closed the socket
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
884 #ifdef RESOLVER_DEBUG
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
885 my_syslog("process_resolver_requests() peer closed socket while reading question");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
886 #endif
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
887 shutdown(socket, SHUT_RDWR);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
888 close(socket);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
889 return;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
890 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
891 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
892 question[rs-1] = '\0'; // ensure null termination
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
893
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
894 // find the answer
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
895 #ifdef NS_PACKETSZ
388
2354a1944e49 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 387
diff changeset
896 int qt = int8_t(question[0]);
2354a1944e49 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 387
diff changeset
897 int res_result = res_query(question+1, ns_c_in, qt, glom.answer, sizeof(glom.answer));
390
bcef093b1ba6 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 389
diff changeset
898 #ifdef RESOLVER_DEBUG
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
899 char text[1000];
387
616e46e9b8f0 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 386
diff changeset
900 snprintf(text, sizeof(text), "process_resolver_requests() has a question %s qtype %d buf len %d result %d",
388
2354a1944e49 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 387
diff changeset
901 question+1, qt, sizeof(glom.answer), res_result);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
902 my_syslog(text);
390
bcef093b1ba6 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 389
diff changeset
903 #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
904 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
905 else glom.length = (size_t)res_result;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
906 #else
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
907 glom.length = sizeof(glom.answer);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
908 glom.answer = 0;
382
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
909 int t = int8_t(question[0]);
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
910 if (t != ns_t_a) {
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
911 glom.length = 0;
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
912 }
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
913 else {
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
914 struct hostent *host = gethostbyname(question+1);
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
915 if (host && (host->h_addrtype == AF_INET)) {
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
916 memcpy(&glom.answer, host->h_addr, sizeof(glom.answer));
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
917 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
918 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
919 #endif
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
920
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
921 // write the answer
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
922 char *buf = (char *)&glom;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
923 int len = glom.length + sizeof(glom.length);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
924 #ifdef RESOLVER_DEBUG
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
925 snprintf(text, sizeof(text), "process_resolver_requests() writing answer length %d for total %d", glom.length, len);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
926 my_syslog(text);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
927 #endif
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
928 int ws = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
929 while (len > ws) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
930 int ns = write(socket, buf+ws, len-ws);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
931 if (ns > 0) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
932 ws += ns;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
933 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
934 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
935 // peer closed the socket!
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
936 #ifdef RESOLVER_DEBUG
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
937 my_syslog("process_resolver_requests() peer closed socket while writing answer");
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
938 #endif
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
939 shutdown(socket, SHUT_RDWR);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
940 close(socket);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
941 return;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
942 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
943 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
944 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
945 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
946
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
947
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
948 ////////////////////////////////////////////////
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
949 // check a single dns list, return ip address in network byte order
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
950 //
382
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
951 uint32_t check_single(mlfiPriv &priv, uint32_t ip, const char *suffix);
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
952 uint32_t check_single(mlfiPriv &priv, uint32_t ip, const char *suffix) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
953 // make a dns question
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
954 const u_char *src = (const u_char *)&ip;
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
955 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
956 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
957 if ((src[0] == 192) && (src[1] == 168)) return 0;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
958 if ((src[0] == 172) && (16 <= src[1]) && (src[1] <= 31)) return 0;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
959 #ifdef NS_MAXDNAME
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
960 char question[NS_MAXDNAME];
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
961 #else
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
962 char question[1000];
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
963 #endif
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
964 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
965 // ask the question, if we get an A record it implies a blacklisted ip address
381
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
966 return dns_interface(priv, question, ns_t_a);
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
967 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
968
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
969
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
970 ////////////////////////////////////////////////
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
971 // check a single dnsbl
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
972 //
382
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
973 bool check_single(mlfiPriv &priv, uint32_t ip, DNSBL &bl);
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
974 bool check_single(mlfiPriv &priv, uint32_t ip, DNSBL &bl) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
975 return check_single(priv, ip, bl.suffix);
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
976 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
977
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
978
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
979 ////////////////////////////////////////////////
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
980 // check a single dnswl
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
981 //
382
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
982 bool check_single(mlfiPriv &priv, uint32_t ip, DNSWL &wl);
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
983 bool check_single(mlfiPriv &priv, uint32_t ip, DNSWL &wl) {
252
836b7f2357f9 need ntohl() before using masks that are defined in host byte order
Carl Byington <carl@five-ten-sg.com>
parents: 249
diff changeset
984 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
985 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
986 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
987 uint32_t m2 = (uint32_t)0x000000ff;
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
988 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
989 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
990 if ((int)l >= wl.level) return true;
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
991 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
992 return false;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
993 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
994
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
995
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
996 ////////////////////////////////////////////////
192
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carl
parents: 191
diff changeset
997 // check the dnsbls specified for this recipient
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
998 //
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
999 bool check_dnsbl(mlfiPriv &priv, dnsblp_list &dnsbll, DNSBLP &rejectlist);
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1000 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
1001 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
1002 DNSBLP dp = *i; // non null by construction
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carl
parents: 191
diff changeset
1003 bool st;
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1004 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
1005 if (f == priv.checked_black.end()) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1006 // have not checked this list yet
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carl
parents: 191
diff changeset
1007 st = check_single(priv, priv.ip, *dp);
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carl
parents: 191
diff changeset
1008 rejectlist = dp;
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1009 priv.checked_black[dp] = st;
192
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carl
parents: 191
diff changeset
1010 }
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carl
parents: 191
diff changeset
1011 else {
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carl
parents: 191
diff changeset
1012 st = (*f).second;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1013 rejectlist = (*f).first;
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carl
parents: 191
diff changeset
1014 }
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carl
parents: 191
diff changeset
1015 if (st) return st;
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carl
parents: 191
diff changeset
1016 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1017 return false;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1018 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1019
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1020
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1021 ////////////////////////////////////////////////
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1022 // check the dnswls specified for this recipient
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1023 //
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1024 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
1025 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
1026 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
1027 DNSWLP dp = *i; // non null by construction
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1028 bool st;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1029 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
1030 if (f == priv.checked_white.end()) {
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1031 // have not checked this list yet
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1032 st = check_single(priv, priv.ip, *dp);
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1033 acceptlist = dp;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1034 priv.checked_white[dp] = st;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1035 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1036 else {
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1037 st = (*f).second;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1038 acceptlist = (*f).first;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1039 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1040 if (st) return st;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1041 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1042 return false;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1043 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1044
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1045
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1046 ////////////////////////////////////////////////
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1047 // check the hosts from the body against the content filter and uribl dnsbls
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1048 //
124
ea6f9c812faa put hostname in smtp message for uribl style lookups
carl
parents: 123
diff changeset
1049 //
382
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
1050 bool check_hosts(mlfiPriv &priv, bool random, int limit, const char *&msg, const char *&host, uint32_t &ip, const char *&found);
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
1051 bool check_hosts(mlfiPriv &priv, bool random, int limit, const char *&msg, const char *&host, uint32_t &ip, const char *&found) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1052 found = NULL; // normally ip address style
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1053 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
1054 string_set &hosts = priv.memory->get_hosts();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1055 string_set &ignore = *priv.content_host_ignore;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1056
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1057 int count = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1058 int cnt = hosts.size(); // number of hosts we could look at
382
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
1059 uint32_t_set ips;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1060 ns_map nameservers;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1061 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
1062 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
1063
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1064 // 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
1065 string_set::iterator j = ignore.find(host);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1066 if (j != ignore.end()) continue;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1067
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1068 // 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
1069 if ((cnt > limit) && (limit > 0) && random) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1070 int r = rand() % cnt;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1071 if (r >= limit) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1072 if (debug_syslog > 2) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1073 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1074 snprintf(buf, sizeof(buf), "host %s skipped", host);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1075 my_syslog(&priv, buf);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1076 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1077 continue;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1078 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1079 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1080 count++;
381
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
1081 ip = dns_interface(priv, host, ns_t_a, true, &nameservers);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1082 if (debug_syslog > 2) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1083 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1084 if (ip) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1085 char adr[sizeof "255.255.255.255 "];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1086 adr[0] = '\0';
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1087 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
1088 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
1089 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1090 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1091 snprintf(buf, sizeof(buf), "host %s not found", host);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1092 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1093 my_syslog(&priv, buf);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1094 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1095 if (ip) {
382
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
1096 uint32_t_set::iterator i = ips.find(ip);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1097 if (i == ips.end()) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1098 // we haven't looked this up yet
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1099 ips.insert(ip);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1100 // check dnsbl style list
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1101 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
1102 msg = priv.content_message;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1103 return true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1104 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1105 // Check uribl & surbl style list
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1106 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
1107 msg = priv.uribl_message;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1108 return true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1109 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1110 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1111 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1112 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1113 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
1114 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
1115 count++;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1116 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
1117 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
1118 ip = (*i).second;
381
879a470c6ac3 fetch spf txt records for required dkim signers
Carl Byington <carl@five-ten-sg.com>
parents: 379
diff changeset
1119 if (!ip) ip = dns_interface(priv, host, ns_t_a);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1120 if (debug_syslog > 2) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1121 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1122 if (ip) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1123 char adr[sizeof "255.255.255.255 "];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1124 adr[0] = '\0';
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1125 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
1126 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
1127 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1128 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1129 snprintf(buf, sizeof(buf), "ns %s not found", host);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1130 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1131 my_syslog(&priv, buf);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1132 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1133 if (ip) {
382
c378e9d03f37 start parsing spf txt records
Carl Byington <carl@five-ten-sg.com>
parents: 381
diff changeset
1134 uint32_t_set::iterator i = ips.find(ip);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1135 if (i == ips.end()) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1136 ips.insert(ip);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1137 if (check_single(priv, ip, priv.content_suffix)) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1138 msg = priv.content_message;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1139 string_map::iterator j = nameservers.ns_host.find(host);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1140 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
1141 const char *refer = (*j).second;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1142 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1143 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
1144 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
1145 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1146 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1147 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
1148 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1149 return true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1150 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1151 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1152 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1153 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1154 return false;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1155 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1156
127
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 126
diff changeset
1157
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1158 ////////////////////////////////////////////////
127
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 126
diff changeset
1159 //
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 126
diff changeset
1160 // 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
1161 // enclosed in <>. I think older versions of sendmail supplied the <>
127
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 126
diff changeset
1162 // 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
1163 // 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
1164 // 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
1165 // 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
1166 // 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
1167 //
346
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1168 const char *to_lower_string(const char *email, bool srs = true);
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1169 const char *to_lower_string(const char *email, bool srs) {
266
582cfb9c4031 fix unauthenticated rate limit bug for empty mail from
Carl Byington <carl@five-ten-sg.com>
parents: 263
diff changeset
1170 if (!email) return strdup("<>");
328
b4f766947202 allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 327
diff changeset
1171 size_t n = strlen(email);
b4f766947202 allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 327
diff changeset
1172 if ((n > 1) && (email[0] == '<') && (email[n-1] == '>')) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1173 n -= 2;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1174 email++;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1175 }
328
b4f766947202 allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 327
diff changeset
1176 if ((n > 1) && (email[0] == '\'') && (email[n-1] == '\'')) {
b4f766947202 allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 327
diff changeset
1177 n -= 2;
b4f766947202 allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 327
diff changeset
1178 email++;
b4f766947202 allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 327
diff changeset
1179 }
352
f5a6740cabee need to lowercase the domain extracted from the from header so it will match the keys in dkim_from
Carl Byington <carl@five-ten-sg.com>
parents: 350
diff changeset
1180 if (n == 0) return strdup("<>");
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1181 char *key = strdup(email);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1182 key[n] = '\0';
331
9800776436b9 allow dkim whitelisting to override uribl hosts in the mail body
Carl Byington <carl@five-ten-sg.com>
parents: 330
diff changeset
1183 for (size_t i=0; i<n; i++) key[i] = tolower(key[i]);
346
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1184
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1185 if (srs) {
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1186 if ((n > 14) && (strncmp(key, "srs", 3) == 0)) {
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1187 // might have srs coding to be removed
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1188 const int nmatch = 7;
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1189 regmatch_t match[nmatch];
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1190 if (0 == regexec(&srs_pattern, key, nmatch, match, 0)) {
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1191 int s4 = match[5].rm_so; // domain
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1192 int e4 = match[5].rm_eo;
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1193 int s5 = match[6].rm_so; // user
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1194 int e5 = match[6].rm_eo;
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1195 if ((s4 != -1) && (s5 != -1)) {
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1196 char *newkey = strdup(key); // large enough
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1197 key[e4] = '\0';
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1198 key[e5] = '\0';
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1199 strcpy(newkey, key+s5); // user
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1200 strcat(newkey, "@"); // @
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1201 strcat(newkey, key+s4); // domain
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1202 free(key);
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1203 key = newkey;
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1204 }
235
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1205 }
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1206 }
346
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1207 if ((n > 7) && (strncmp(key, "prvs", 4) == 0)) {
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1208 // might have prvs coding to be removed
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1209 const int nmatch = 3;
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1210 regmatch_t match[nmatch];
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1211 if (0 == regexec(&prvs_pattern, key, nmatch, match, 0)) {
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1212 int s2 = match[2].rm_so; // user@domain
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1213 if (s2 != -1) {
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1214 char *newkey = strdup(key+s2); // user@domain
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1215 free(key);
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1216 key = newkey;
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1217 }
246
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1218 }
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1219 }
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1220 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1221 return key;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1222 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1223
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1224
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1225 ////////////////////////////////////////////////
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1226 // start of sendmail milter interfaces
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1227 //
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1228 sfsistat mlfi_connect(SMFICTX *ctx, char *hostname, _SOCK_ADDR *hostaddr)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1229 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1230 // allocate some private memory
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1231 mlfiPriv *priv = new mlfiPriv;
286
9bd5388bf469 Fix possible segfault in mlfi_connect, hostaddr might be null
Carl Byington <carl@five-ten-sg.com>
parents: 284
diff changeset
1232 if (hostaddr && (hostaddr->sa_family == AF_INET)) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1233 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
1234 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1235 // save the private data
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1236 smfi_setpriv(ctx, (void*)priv);
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1237
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1238 // continue processing
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1239 return SMFIS_CONTINUE;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1240 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1241
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1242 sfsistat mlfi_helo(SMFICTX * ctx, char *helohost)
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1243 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1244 mlfiPriv &priv = *MLFIPRIV;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1245 priv.helo = strdup(helohost);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1246 return SMFIS_CONTINUE;
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1247 }
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1248
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1249 sfsistat mlfi_envfrom(SMFICTX *ctx, char **from)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1250 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1251 mlfiPriv &priv = *MLFIPRIV;
278
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 272
diff changeset
1252 CONFIG &dc = *priv.pc;
350
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
1253 priv.origaddr = to_lower_string(from[0], false);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1254 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
1255 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
1256 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
1257 priv.client_name = smfi_getsymval(ctx, (char*)"_");
191
2a67d31099c3 fix null pointer dereference from missing HELO command
carl
parents: 190
diff changeset
1258 if (!priv.helo) priv.helo = strdup("unknown");
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1259 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
1260 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
1261 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
1262 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
1263 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
1264 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
1265 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
1266 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
1267 //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
1268 //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
1269 //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
1270 }
268
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1271 p = strstr(priv.client_name, "] (may be forged)");
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1272 if (p) {
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1273 priv.client_dns_forged = true;
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1274 if (priv.client_dns_name) {
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1275 char text[500];
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1276 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
1277 my_syslog(text);
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1278 }
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1279 }
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
1280 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1281 if (spamc != spamc_empty) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1282 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
1283 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1284 if (dccifd_port) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1285 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
1286 }
290
bb69fdc3acaa Unique ip connection limits only apply to authenticated connections
Carl Byington <carl@five-ten-sg.com>
parents: 286
diff changeset
1287 if (priv.authenticated) {
284
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 282
diff changeset
1288 int hourly, daily;
290
bb69fdc3acaa Unique ip connection limits only apply to authenticated connections
Carl Byington <carl@five-ten-sg.com>
parents: 286
diff changeset
1289 add_auth_address(priv.authenticated, hourly, daily, priv.ip);
bb69fdc3acaa Unique ip connection limits only apply to authenticated connections
Carl Byington <carl@five-ten-sg.com>
parents: 286
diff changeset
1290 int h_limit = dc.default_context->find_address_limit(priv.authenticated);
284
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 282
diff changeset
1291 int d_limit = dc.default_context->get_daily_address_multiple() * h_limit;
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 282
diff changeset
1292 if (debug_syslog > 1) {
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 282
diff changeset
1293 char msg[maxlen];
290
bb69fdc3acaa Unique ip connection limits only apply to authenticated connections
Carl Byington <carl@five-ten-sg.com>
parents: 286
diff changeset
1294 snprintf(msg, sizeof(msg), "connect for %s (%d %d addresses, %d %d limits)", priv.authenticated, hourly, daily, h_limit, d_limit);
284
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 282
diff changeset
1295 my_syslog(&priv, msg);
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 282
diff changeset
1296 }
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 282
diff changeset
1297 if ((hourly > h_limit) || (daily > d_limit)){
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 282
diff changeset
1298 smfi_setreply(ctx, (char*)"550", (char*)"5.7.1", (char*)"unique connection ip address limit exceeded");
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 282
diff changeset
1299 return SMFIS_REJECT;
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 282
diff changeset
1300 }
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 282
diff changeset
1301 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1302 return SMFIS_CONTINUE;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1303 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1304
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1305 sfsistat mlfi_envrcpt(SMFICTX *ctx, char **rcpt)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1306 {
278
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 272
diff changeset
1307 DNSBLP rejectlist = NULL; // list that caused the reject
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 272
diff changeset
1308 mlfiPriv &priv = *MLFIPRIV;
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 272
diff changeset
1309 CONFIG &dc = *priv.pc;
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 272
diff changeset
1310 const char *rcptaddr = rcpt[0];
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 272
diff changeset
1311 const char *loto = to_lower_string(rcptaddr);
342
6d27b4f45799 allow envelope from whitelisting without dkim override for mail from localhost, or where the from address is root@*
Carl Byington <carl@five-ten-sg.com>
parents: 340
diff changeset
1312 bool self = (strcmp(loto, priv.mailaddr) == 0);
6d27b4f45799 allow envelope from whitelisting without dkim override for mail from localhost, or where the from address is root@*
Carl Byington <carl@five-ten-sg.com>
parents: 340
diff changeset
1313 const u_char *src = (const u_char *)&priv.ip;
6d27b4f45799 allow envelope from whitelisting without dkim override for mail from localhost, or where the from address is root@*
Carl Byington <carl@five-ten-sg.com>
parents: 340
diff changeset
1314 bool local_source = (src[0] == 127);
6d27b4f45799 allow envelope from whitelisting without dkim override for mail from localhost, or where the from address is root@*
Carl Byington <carl@five-ten-sg.com>
parents: 340
diff changeset
1315 bool from_root = (strncasecmp(priv.mailaddr, "root@", 5) == 0);
174
da0c41b9f672 don't whitelist addresses with embedded spaces
carl
parents: 173
diff changeset
1316
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1317 // 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
1318 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
1319 smfi_setreply(ctx, (char*)"550", (char*)"5.7.1", (char*)"bogus recipient");
286
9bd5388bf469 Fix possible segfault in mlfi_connect, hostaddr might be null
Carl Byington <carl@five-ten-sg.com>
parents: 284
diff changeset
1320 free((void*)loto); // cppcheck static analysis found memory leak
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1321 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1322 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1323 // 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
1324 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
1325 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
1326 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
1327 // tell spam assassin and dccifd about this recipient
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1328 if (priv.assassin) priv.assassin->mlfi_envrcpt(ctx, loto);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1329 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
1330 // loto sending a reply back to priv.mailaddr
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1331 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
1332 const char *replyvalue = con2.find_from(loto);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1333 if (debug_syslog > 1) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1334 char buf[maxlen];
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1335 char buf2[maxlen];
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1336 char msg[maxlen];
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1337 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
1338 my_syslog(&priv, msg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1339 }
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1340 free((void*)loto);
340
be776a246f97 when dkim require_signed overrides envelope from whitelisting, we still want to check dns based white/blacklists before content filtering
Carl Byington <carl@five-ten-sg.com>
parents: 338
diff changeset
1341 status st = oksofar;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1342 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
1343 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
1344 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1345 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1346 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
1347 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
1348 incr_rcpt_count(priv.authenticated, hourly, daily);
278
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 272
diff changeset
1349 int h_limit = dc.default_context->find_rate_limit(priv.authenticated);
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 272
diff changeset
1350 int d_limit = dc.default_context->get_daily_rate_multiple() * h_limit;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1351 if (debug_syslog > 1) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1352 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
1353 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
1354 my_syslog(&priv, msg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1355 }
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
1356 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
1357 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
1358 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1359 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1360 st = white;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1361 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1362 else if (fromvalue == token_black) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1363 st = black;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1364 }
342
6d27b4f45799 allow envelope from whitelisting without dkim override for mail from localhost, or where the from address is root@*
Carl Byington <carl@five-ten-sg.com>
parents: 340
diff changeset
1365 else if ((fromvalue == token_white) && (local_source || from_root)) {
6d27b4f45799 allow envelope from whitelisting without dkim override for mail from localhost, or where the from address is root@*
Carl Byington <carl@five-ten-sg.com>
parents: 340
diff changeset
1366 st = white;
6d27b4f45799 allow envelope from whitelisting without dkim override for mail from localhost, or where the from address is root@*
Carl Byington <carl@five-ten-sg.com>
parents: 340
diff changeset
1367 }
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
1368 else if ((fromvalue == token_white) && !self) {
330
b5b93a7e1e6d ignore envelope-from based whitelisting if we have a dkim requirement for that domain
Carl Byington <carl@five-ten-sg.com>
parents: 329
diff changeset
1369 // whitelisting based on envelope from value, but ignore it if
350
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
1370 // we have a dkim requirement for the original domain
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
1371 const char *domain = strchr(priv.origaddr, '@');
330
b5b93a7e1e6d ignore envelope-from based whitelisting if we have a dkim requirement for that domain
Carl Byington <carl@five-ten-sg.com>
parents: 329
diff changeset
1372 if (domain) {
338
f375a67ee516 set st in all paths; missing +1 to avoid lookup starting with @
Carl Byington <carl@five-ten-sg.com>
parents: 337
diff changeset
1373 DKIMP dk = con.find_dkim_from(domain+1);
330
b5b93a7e1e6d ignore envelope-from based whitelisting if we have a dkim requirement for that domain
Carl Byington <carl@five-ten-sg.com>
parents: 329
diff changeset
1374 if (dk && (dk->action == token_require_signed)) {
b5b93a7e1e6d ignore envelope-from based whitelisting if we have a dkim requirement for that domain
Carl Byington <carl@five-ten-sg.com>
parents: 329
diff changeset
1375 my_syslog(&priv, "dkim require_signed overrides envelope from whitelist");
338
f375a67ee516 set st in all paths; missing +1 to avoid lookup starting with @
Carl Byington <carl@five-ten-sg.com>
parents: 337
diff changeset
1376 st = oksofar;
330
b5b93a7e1e6d ignore envelope-from based whitelisting if we have a dkim requirement for that domain
Carl Byington <carl@five-ten-sg.com>
parents: 329
diff changeset
1377 }
b5b93a7e1e6d ignore envelope-from based whitelisting if we have a dkim requirement for that domain
Carl Byington <carl@five-ten-sg.com>
parents: 329
diff changeset
1378 else st = white;
b5b93a7e1e6d ignore envelope-from based whitelisting if we have a dkim requirement for that domain
Carl Byington <carl@five-ten-sg.com>
parents: 329
diff changeset
1379 }
b5b93a7e1e6d ignore envelope-from based whitelisting if we have a dkim requirement for that domain
Carl Byington <carl@five-ten-sg.com>
parents: 329
diff changeset
1380 else st = white; // might be <>, envelope from has no @
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1381 }
340
be776a246f97 when dkim require_signed overrides envelope from whitelisting, we still want to check dns based white/blacklists before content filtering
Carl Byington <carl@five-ten-sg.com>
parents: 338
diff changeset
1382
be776a246f97 when dkim require_signed overrides envelope from whitelisting, we still want to check dns based white/blacklists before content filtering
Carl Byington <carl@five-ten-sg.com>
parents: 338
diff changeset
1383 if (st == oksofar) {
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1384 // check the dns based lists, whitelist first
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1385 DNSWLP acceptlist = NULL; // list that caused the whitelisting
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1386 if (check_dnswl(priv, con.get_dnswl_list(), acceptlist)) {
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1387 st = white;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1388 if (debug_syslog > 1) {
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1389 char msg[maxlen];
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1390 snprintf(msg, sizeof(msg), "whitelisted by %s", acceptlist->name);
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1391 my_syslog(&priv, msg);
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1392 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1393 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1394 else if (check_dnsbl(priv, con.get_dnsbl_list(), rejectlist)) {
340
be776a246f97 when dkim require_signed overrides envelope from whitelisting, we still want to check dns based white/blacklists before content filtering
Carl Byington <carl@five-ten-sg.com>
parents: 338
diff changeset
1395 // reject the recipient based on some dnsbl
be776a246f97 when dkim require_signed overrides envelope from whitelisting, we still want to check dns based white/blacklists before content filtering
Carl Byington <carl@five-ten-sg.com>
parents: 338
diff changeset
1396 char adr[sizeof "255.255.255.255 "];
be776a246f97 when dkim require_signed overrides envelope from whitelisting, we still want to check dns based white/blacklists before content filtering
Carl Byington <carl@five-ten-sg.com>
parents: 338
diff changeset
1397 adr[0] = '\0';
be776a246f97 when dkim require_signed overrides envelope from whitelisting, we still want to check dns based white/blacklists before content filtering
Carl Byington <carl@five-ten-sg.com>
parents: 338
diff changeset
1398 inet_ntop(AF_INET, (const u_char *)&priv.ip, adr, sizeof(adr));
be776a246f97 when dkim require_signed overrides envelope from whitelisting, we still want to check dns based white/blacklists before content filtering
Carl Byington <carl@five-ten-sg.com>
parents: 338
diff changeset
1399 char buf[maxlen];
be776a246f97 when dkim require_signed overrides envelope from whitelisting, we still want to check dns based white/blacklists before content filtering
Carl Byington <carl@five-ten-sg.com>
parents: 338
diff changeset
1400 snprintf(buf, sizeof(buf), rejectlist->message, adr, adr);
be776a246f97 when dkim require_signed overrides envelope from whitelisting, we still want to check dns based white/blacklists before content filtering
Carl Byington <carl@five-ten-sg.com>
parents: 338
diff changeset
1401 smfi_setreply(ctx, (char*)"550", (char*)"5.7.1", buf);
be776a246f97 when dkim require_signed overrides envelope from whitelisting, we still want to check dns based white/blacklists before content filtering
Carl Byington <carl@five-ten-sg.com>
parents: 338
diff changeset
1402 return SMFIS_REJECT;
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1403 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1404 }
340
be776a246f97 when dkim require_signed overrides envelope from whitelisting, we still want to check dns based white/blacklists before content filtering
Carl Byington <carl@five-ten-sg.com>
parents: 338
diff changeset
1405
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1406 if (st == oksofar) {
268
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1407 // check forged rdns
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1408 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
1409 // reject the recipient based on forged reverse dns
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1410 char buf[maxlen];
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1411 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
1412 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
1413 return SMFIS_REJECT;
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1414 }
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1415 // check generic rdns
301
13905d36ca82 Generic regex now matches against the reverse dns PTR value
Carl Byington <carl@five-ten-sg.com>
parents: 296
diff changeset
1416 if (priv.client_dns_name) {
13905d36ca82 Generic regex now matches against the reverse dns PTR value
Carl Byington <carl@five-ten-sg.com>
parents: 296
diff changeset
1417 const char *msg = con.generic_match(priv.client_dns_name);
13905d36ca82 Generic regex now matches against the reverse dns PTR value
Carl Byington <carl@five-ten-sg.com>
parents: 296
diff changeset
1418 if (msg) {
13905d36ca82 Generic regex now matches against the reverse dns PTR value
Carl Byington <carl@five-ten-sg.com>
parents: 296
diff changeset
1419 // reject the recipient based on generic reverse dns
13905d36ca82 Generic regex now matches against the reverse dns PTR value
Carl Byington <carl@five-ten-sg.com>
parents: 296
diff changeset
1420 char buf[maxlen];
13905d36ca82 Generic regex now matches against the reverse dns PTR value
Carl Byington <carl@five-ten-sg.com>
parents: 296
diff changeset
1421 snprintf(buf, sizeof(buf), msg, priv.client_name);
13905d36ca82 Generic regex now matches against the reverse dns PTR value
Carl Byington <carl@five-ten-sg.com>
parents: 296
diff changeset
1422 smfi_setreply(ctx, (char*)"550", (char*)"5.7.1", buf);
13905d36ca82 Generic regex now matches against the reverse dns PTR value
Carl Byington <carl@five-ten-sg.com>
parents: 296
diff changeset
1423 return SMFIS_REJECT;
13905d36ca82 Generic regex now matches against the reverse dns PTR value
Carl Byington <carl@five-ten-sg.com>
parents: 296
diff changeset
1424 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1425 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1426 }
340
be776a246f97 when dkim require_signed overrides envelope from whitelisting, we still want to check dns based white/blacklists before content filtering
Carl Byington <carl@five-ten-sg.com>
parents: 338
diff changeset
1427
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1428 if (st == black) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1429 // 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
1430 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
1431 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1432 }
340
be776a246f97 when dkim require_signed overrides envelope from whitelisting, we still want to check dns based white/blacklists before content filtering
Carl Byington <carl@five-ten-sg.com>
parents: 338
diff changeset
1433
203
92a5c866bdfa Verify from/to pairs even if they might be explicitly whitelisted.
Carl Byington <carl@five-ten-sg.com>
parents: 194
diff changeset
1434 if (ver) {
350
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
1435 // try to verify the original from/to pair of addresses even if it might be explicitly whitelisted
346
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1436 const char *loto = to_lower_string(rcptaddr, false);
350
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
1437 bool rc = ver->ok(priv.queueid, priv.origaddr, loto);
346
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1438 free((void*)loto);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1439 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
1440 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
1441 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1442 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1443 }
340
be776a246f97 when dkim require_signed overrides envelope from whitelisting, we still want to check dns based white/blacklists before content filtering
Carl Byington <carl@five-ten-sg.com>
parents: 338
diff changeset
1444
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
1445 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
1446 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
1447 incr_rcpt_count(priv.mailaddr, hourly, daily);
278
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 272
diff changeset
1448 int h_limit = dc.default_context->find_rate_limit(priv.mailaddr);
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 272
diff changeset
1449 int d_limit = dc.default_context->get_daily_rate_multiple() * h_limit;
263
e118fd2c6af0 fix unauthenticated rate limit bug for empty mail from; move unauthenticate rate limit checks after spam filtering
Carl Byington <carl@five-ten-sg.com>
parents: 259
diff changeset
1450 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
1451 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
1452 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
1453 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
1454 }
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
1455 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
1456 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
1457 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
1458 }
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
1459 }
340
be776a246f97 when dkim require_signed overrides envelope from whitelisting, we still want to check dns based white/blacklists before content filtering
Carl Byington <carl@five-ten-sg.com>
parents: 338
diff changeset
1460
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1461 // 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
1462 // if needed to ensure we can accept replies
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1463 loto = to_lower_string(rcptaddr);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1464 WHITELISTERP w = con2.find_autowhite(loto, priv.mailaddr);
291
9f0d9fcb58dd Never add auto-whitelist entries for outgoing mail from localhost
Carl Byington <carl@five-ten-sg.com>
parents: 290
diff changeset
1465
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1466 // check if local part is too big
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1467 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
1468 const char *p = strchr(loto, '@');
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1469 int len = (p) ? p-loto : max_local_size;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1470 if (len >= max_local_size) w = NULL; // too big, pretend we don't have a whitelister
291
9f0d9fcb58dd Never add auto-whitelist entries for outgoing mail from localhost
Carl Byington <carl@five-ten-sg.com>
parents: 290
diff changeset
1471
9f0d9fcb58dd Never add auto-whitelist entries for outgoing mail from localhost
Carl Byington <carl@five-ten-sg.com>
parents: 290
diff changeset
1472 // ignore auto whitelisting from outgoing mail from localhost
342
6d27b4f45799 allow envelope from whitelisting without dkim override for mail from localhost, or where the from address is root@*
Carl Byington <carl@five-ten-sg.com>
parents: 340
diff changeset
1473 if (local_source) w = NULL; // outgoing mail from localhost, pretend we don't have a whitelister
291
9f0d9fcb58dd Never add auto-whitelist entries for outgoing mail from localhost
Carl Byington <carl@five-ten-sg.com>
parents: 290
diff changeset
1474
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1475 // record it if we have a whitelister
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1476 if (w) {
231
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1477 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
1478 priv.delayer.push_back(dwp);
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 {
231
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1481 free((void*)loto); // or we free it here
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1482 }
179
8b86a894514d embedded dcc filtering
carl
parents: 178
diff changeset
1483
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1484 // accept the recipient
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1485 if (!con.get_content_filtering()) st = white;
179
8b86a894514d embedded dcc filtering
carl
parents: 178
diff changeset
1486
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1487 if (st == oksofar) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1488 // remember first content filtering context
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1489 if (con.get_content_filtering()) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1490 if (!priv.content_context) priv.content_context = &con;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1491 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
1492 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
1493 return SMFIS_TEMPFAIL;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1494 }
350
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
1495 priv.need_content_filter(con);
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
1496 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
1497 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
1498 // content filtering implies also checking helo name on uribl (if enabled)
c0d2e99c0a1d Add surbl ch