annotate src/dnsbl.cpp @ 366:9fc05f3a824f

allow upstream opendkim header to be wrapped
author Carl Byington <carl@five-ten-sg.com>
date Mon, 16 Jan 2017 13:50:38 -0800
parents df45a2377632
children 7fd39f029936
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1 /*
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2
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3 Copyright (c) 2013 Carl Byington - 510 Software Group, released under
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c7fc218686f5 gpl3, block mail to recipients that cannot reply
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4 the GPL version 3 or any later version at your choice available at
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5 http://www.gnu.org/licenses/gpl-3.0.txt
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6
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7 Based on a sample milter Copyright (c) 2000-2003 Sendmail, Inc. and its
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8 suppliers. Inspired by the DCC by Rhyolite Software
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9
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10 -b port The port used to talk to the dcc interface daemon
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11 -r port The port used to talk to our internal dns resolver processes
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12 -p port The port through which the MTA will connect to this milter.
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13 -t sec The timeout value.
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14 -c Check the config, and print a copy to stdout. Don't start the
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15 milter or do anything with the socket.
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16 -s Stress test by loading and deleting the current config in a loop.
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17 -d level set the debug level
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18 -e f|t Print the results of looking up from address f and to address
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19 t in the current config
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20
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21 */
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22
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23
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24 // from sendmail sample
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25 #include <sys/types.h>
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26 #include <sys/stat.h>
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27 #include <errno.h>
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28 #include <sysexits.h>
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29 #include <unistd.h>
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30
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31 // needed for socket io
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32 #include <sys/ioctl.h>
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33 #include <net/if.h>
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34 #include <arpa/inet.h>
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35 #include <netinet/in.h>
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36 #include <netinet/tcp.h>
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37 #include <netdb.h>
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38 #include <sys/socket.h>
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39 #include <sys/un.h>
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40
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41 // needed for thread
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42 #include <pthread.h>
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43
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44 // needed for std c++ collections
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45 #include <set>
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46 #include <map>
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47 #include <list>
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48
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49 // for the dns resolver
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50 #include <netinet/in.h>
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51 #include <arpa/nameser.h>
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52 #include <resolv.h>
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53
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54 // misc stuff needed here
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55 #include <ctype.h>
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56 #include <syslog.h>
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57 #include <pwd.h>
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58 #include <sys/wait.h> /* header for waitpid() and various macros */
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59 #include <signal.h> /* header for signal functions */
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60
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61 #include "includes.h"
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62
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63 #ifndef HAVE_DAEMON
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64 #include "daemon.h"
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65 #include "daemon.c"
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66 #endif
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68 #ifndef HAVE_MEMRCHR
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69 void *memrchr(const void *a, int c, size_t len);
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70 void *memrchr(const void *a, int c, size_t len) {
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71 const unsigned char *p = (const unsigned char *)a;
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72 for (p += len-1; (const void *)p >= a; p--)
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73 if (*p == c)
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74 return (void *)p;
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75 return (void *)0;
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76 }
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77 #endif
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78
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79 extern "C" {
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80 sfsistat mlfi_connect(SMFICTX *ctx, char *hostname, _SOCK_ADDR *hostaddr);
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81 sfsistat mlfi_helo(SMFICTX * ctx, char *helohost);
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82 sfsistat mlfi_envfrom(SMFICTX *ctx, char **argv);
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83 sfsistat mlfi_envrcpt(SMFICTX *ctx, char **argv);
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84 sfsistat mlfi_header(SMFICTX* ctx, char* headerf, char* headerv);
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85 sfsistat mlfi_body(SMFICTX *ctx, u_char *data, size_t len);
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86 sfsistat mlfi_eom(SMFICTX *ctx);
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87 sfsistat mlfi_abort(SMFICTX *ctx);
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88 sfsistat mlfi_close(SMFICTX *ctx);
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89 void sig_chld(int signo);
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90 }
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91
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92 int debug_syslog = 0;
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93 bool syslog_opened = false;
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94 bool use_syslog = true; // false to printf
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95 bool loader_run = true; // used to stop the config loader thread
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96 CONFIG *config = NULL; // protected by the config_mutex
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97 int generation = 0; // protected by the config_mutex
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98 const int maxlen = 1000; // used for snprintf buffers
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99 regex_t srs_pattern; // used to detect srs coding in mail addresses
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100 regex_t prvs_pattern; // used to detect prvs coding in mail addresses
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101 regex_t dkim_r_pattern; // used to detect dkim signatures authenticated by the upstream opendkim milter
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102 regex_t dkim_s_pattern; // used to detect dkim signatures generated by the upstream opendkim milter
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103 regex_t from_pattern; // used to extract the senders mail domain from the body from: header
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104
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105 pthread_mutex_t config_mutex;
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106 pthread_mutex_t syslog_mutex;
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107 pthread_mutex_t resolve_mutex;
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108 pthread_mutex_t fd_pool_mutex;
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109 pthread_mutex_t rate_mutex;
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110
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111 std::set<int> fd_pool;
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112 int NULL_SOCKET = -1;
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113 const time_t ERROR_SOCKET_TIME = 60; // number of seconds between attempts to open a socket to the dns resolver process
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114 const char *resolver_port = NULL; // unix domain socket to talk to the dns resolver process
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115 int resolver_socket = NULL_SOCKET; // socket used to listen for resolver requests
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116 const char *dccifd_port = NULL; // unix domain socket to talk to the dcc interface daemon
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117 time_t last_error_time = 0;
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118 int resolver_sock_count = 0; // protected with fd_pool_mutex
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119 int resolver_pool_size = 0; // protected with fd_pool_mutex
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120 rates rcpt_hourly_counts; // protected with rate_mutex
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121 rates rcpt_daily_counts; // protected with rate_mutex
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122 auth_addresses auth_hourly_addresses; // protected with rate_mutex
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123 auth_addresses auth_daily_addresses; // protected with rate_mutex
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125
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126 struct ns_map {
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127 // all the strings are owned by the keys/values in the ns_host string map
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128 string_map ns_host; // nameserver name -> host name that uses this name server
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129 ns_mapper ns_ip; // nameserver name -> ipv4 address of the name server
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130 ~ns_map();
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131 void add(const char *name, const char *refer);
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132 };
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134
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135 ns_map::~ns_map() {
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136 for (string_map::iterator i=ns_host.begin(); i!=ns_host.end(); i++) {
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137 const char *x = (*i).first;
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138 const char *y = (*i).second;
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139 free((void*)x);
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140 free((void*)y);
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141 }
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142 ns_ip.clear();
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143 ns_host.clear();
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144 }
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146
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147 void ns_map::add(const char *name, const char *refer) {
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148 string_map::iterator i = ns_host.find(name);
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149 if (i != ns_host.end()) return;
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150 char *x = strdup(name);
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151 char *y = strdup(refer);
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152 ns_ip[x] = 0;
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153 ns_host[x] = y;
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154
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155 }
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156
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157 // packed structure to allow a single socket write to dump the
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158 // length and the following answer. The packing attribute is gcc specific.
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159 struct glommer {
214
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160 size_t length;
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161 #ifdef NS_PACKETSZ
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162 u_char answer[NS_PACKETSZ*4]; // with a resolver, we return resolver answers
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163 #else
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164 uint32_t answer; // without a resolver, we return a single ipv4 address in network byte order, 0 == no answer
192
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165 #endif
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166 } __attribute__ ((packed));
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167
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168
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169 ////////////////////////////////////////////////
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170 // helper to manipulate recipient counts
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171 //
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172 void incr_rcpt_count(const char *user, int &hourly, int &daily);
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173 void incr_rcpt_count(const char *user, int &hourly, int &daily) {
192
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174 pthread_mutex_lock(&rate_mutex);
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175 rates::iterator i = rcpt_hourly_counts.find(user);
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176 hourly = 1;
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177 if (i == rcpt_hourly_counts.end()) {
192
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178 user = strdup(user);
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179 rcpt_hourly_counts[user] = hourly;
192
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180 }
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181 else {
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182 hourly = ++((*i).second);
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183 }
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184
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185 rates::iterator j = rcpt_daily_counts.find(user);
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186 daily = 1;
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187 if (j == rcpt_daily_counts.end()) {
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188 user = strdup(user);
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189 rcpt_daily_counts[user] = daily;
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190 }
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191 else {
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192 daily = ++((*j).second);
192
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193 }
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194 pthread_mutex_unlock(&rate_mutex);
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195 }
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196
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197
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198 void add_auth_address(const char *user, int &hourly, int &daily, int32_t ip);
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199 void add_auth_address(const char *user, int &hourly, int &daily, int32_t ip) {
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200 pthread_mutex_lock(&rate_mutex);
280
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201 auth_addresses::iterator i = auth_hourly_addresses.find(user);
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202 if (i == auth_hourly_addresses.end()) {
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203 user = strdup(user);
278
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204 auth_hourly_addresses[user] = new int32_t_set;
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205 auth_hourly_addresses[user]->insert(ip);
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206 hourly = 1;
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207 }
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208 else {
280
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209 int32_t_set::iterator k = ((*i).second)->find(ip);
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210 if (k == ((*i).second)->end()) ((*i).second)->insert(ip);
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211 hourly = ((*i).second)->size();
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212 }
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213
280
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214 auth_addresses::iterator j = auth_daily_addresses.find(user);
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215 if (j == auth_daily_addresses.end()) {
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216 user = strdup(user);
278
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217 auth_daily_addresses[user] = new int32_t_set;
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218 auth_daily_addresses[user]->insert(ip);
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219 daily = 1;
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220 }
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221 else {
280
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222 int32_t_set::iterator k = ((*j).second)->find(ip);
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223 if (k == ((*j).second)->end()) ((*j).second)->insert(ip);
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224 daily = ((*j).second)->size();
278
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225 }
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226 pthread_mutex_unlock(&rate_mutex);
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227 }
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228
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229 ////////////////////////////////////////////////
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230 // helper to discard the strings held by a context_map
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231 //
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232 void discard(context_map &cm);
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233 void discard(context_map &cm) {
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234 for (context_map::iterator i=cm.begin(); i!=cm.end(); i++) {
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235 const char *x = (*i).first;
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236 free((void*)x);
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237 }
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238 cm.clear();
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239 }
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240
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241
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242 ////////////////////////////////////////////////
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243 // helper to register a string in a context_map
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244 //
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245 void register_string(context_map &cm, const char *name, CONTEXT *con);
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246 void register_string(context_map &cm, const char *name, CONTEXT *con) {
192
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247 context_map::iterator i = cm.find(name);
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248 if (i != cm.end()) return;
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249 char *x = strdup(name);
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250 cm[x] = con;
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251 }
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252
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253
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254 ////////////////////////////////////////////////
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255 // disconnect the fd from the dns resolver process
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256 //
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257 void my_disconnect(int sock, bool decrement = true);
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258 void my_disconnect(int sock, bool decrement) {
192
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259 if (sock != NULL_SOCKET) {
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260 if (decrement) {
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261 pthread_mutex_lock(&fd_pool_mutex);
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262 resolver_sock_count--;
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263 pthread_mutex_unlock(&fd_pool_mutex);
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264 }
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265 shutdown(sock, SHUT_RDWR);
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266 close(sock);
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267 }
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268 }
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269
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270
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271 ////////////////////////////////////////////////
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272 // return fd connected to the dns resolver process
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273 //
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274 int my_connect();
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275 int my_connect() {
192
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276 // if we have had recent errors, don't even try to open the socket
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277 if ((time(NULL) - last_error_time) < ERROR_SOCKET_TIME) return NULL_SOCKET;
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278
192
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279 // nothing recent, maybe this time it will work
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280 int sock = NULL_SOCKET;
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281 sockaddr_un server;
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282 memset(&server, '\0', sizeof(server));
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283 server.sun_family = AF_UNIX;
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284 strncpy(server.sun_path, resolver_port, sizeof(server.sun_path)-1);
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285 sock = socket(AF_UNIX, SOCK_STREAM, 0);
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286 if (sock != NULL_SOCKET) {
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287 bool rc = (connect(sock, (sockaddr *)&server, sizeof(server)) == 0);
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288 if (!rc) {
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289 my_disconnect(sock, false);
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290 sock = NULL_SOCKET;
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291 last_error_time = time(NULL);
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292 }
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293 }
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294 else last_error_time = time(NULL);
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295 if (sock != NULL_SOCKET) {
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296 pthread_mutex_lock(&fd_pool_mutex);
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297 resolver_sock_count++;
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298 pthread_mutex_unlock(&fd_pool_mutex);
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299 }
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300 return sock;
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301 }
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302
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303
236
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304 ////////////////////////////////////////////////
252
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305 // ask a dns question and get an A record answer in network byte order
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306 // we don't try very hard, just using the default resolver retry settings.
236
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307 // If we cannot get an answer, we just accept the mail.
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308 //
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309 //
252
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310 uint32_t dns_interface(mlfiPriv &priv, const char *question, bool maybe_ip, ns_map *nameservers);
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311 uint32_t dns_interface(mlfiPriv &priv, const char *question, bool maybe_ip, ns_map *nameservers) {
236
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312 // tell sendmail we are still working
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313 #if _FFR_SMFI_PROGRESS
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314 if (priv.eom) smfi_progress(priv.ctx);
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315 #endif
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316
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317 // this part can be done without locking the resolver mutex. Each
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318 // milter thread is talking over its own socket to a separate resolver
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319 // process, which does the actual dns resolution.
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320 if (priv.err) return 0; // cannot ask more questions on this socket.
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321 if (maybe_ip) {
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322 // might be a bare ip address, try this first to avoid dns lookups that may not be needed
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323 in_addr ip;
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324 if (inet_aton(question, &ip)) {
252
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325 return ip.s_addr;
236
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326 }
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327 }
328
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328 size_t n = strlen(question);
236
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329 if (question[n-1] == '.') {
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330 priv.my_write(question, n+1); // write the question including the null terminator
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331 }
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332 else {
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333 priv.my_write(question, n); // write the question
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334 priv.my_write(".", 2); // and the fully qualified . terminator and null string terminator
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335 }
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336 glommer glom;
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337 char *buf = (char *)&glom;
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338 priv.my_read(buf, sizeof(glom.length));
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339 buf += sizeof(glom.length);
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340 #ifdef RESOLVER_DEBUG
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341 char text[1000];
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342 snprintf(text, sizeof(text), "dns_interface() wrote question %s and has answer length %d", question, glom.length);
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343 my_syslog(text);
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344 #endif
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345 if (glom.length == 0) return 0;
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346 if (glom.length > sizeof(glom.answer)) {
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347 priv.err = true;
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348 return 0; // cannot process overlarge answers
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349 }
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350 priv.my_read(buf, glom.length);
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351
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352 #ifdef NS_PACKETSZ
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353 // now we need to lock the resolver mutex to keep the milter threads from
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354 // stepping on each other while parsing the dns answer.
252
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355 uint32_t ret_address = 0;
236
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356 pthread_mutex_lock(&resolve_mutex);
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357 // parse the answer
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358 ns_msg handle;
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359 ns_rr rr;
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360 if (ns_initparse(glom.answer, glom.length, &handle) == 0) {
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361 // look for ns names
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362 if (nameservers) {
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363 ns_map &ns = *nameservers;
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364 int rrnum = 0;
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365 while (ns_parserr(&handle, ns_s_ns, rrnum++, &rr) == 0) {
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366 if (ns_rr_type(rr) == ns_t_ns) {
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367 char nam[NS_MAXDNAME+1];
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368 char *n = nam;
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369 const u_char *p = ns_rr_rdata(rr);
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370 while (((n-nam) < NS_MAXDNAME) && ((size_t)(p-glom.answer) < glom.length) && *p) {
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371 size_t s = *(p++);
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372 if (s > 191) {
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373 // compression pointer
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374 s = (s-192)*256 + *(p++);
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375 if (s >= glom.length) break; // pointer outside bounds of answer
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376 p = glom.answer + s;
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377 s = *(p++);
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378 }
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diff changeset
379 if (s > 0) {
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380 if ((size_t)(n-nam) >= (NS_MAXDNAME-s)) break; // destination would overflow name buffer
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381 if ((size_t)(p-glom.answer) >= (glom.length-s)) break; // source outside bounds of answer
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diff changeset
382 memcpy(n, p, s);
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diff changeset
383 n += s;
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diff changeset
384 p += s;
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385 *(n++) = '.';
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diff changeset
386 }
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diff changeset
387 }
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388 if (n-nam) n--; // remove trailing .
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diff changeset
389 *n = '\0'; // null terminate it
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390 ns.add(nam, question); // ns host to lookup later
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diff changeset
391 }
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diff changeset
392 }
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diff changeset
393 rrnum = 0;
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diff changeset
394 while (ns_parserr(&handle, ns_s_ar, rrnum++, &rr) == 0) {
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diff changeset
395 if (ns_rr_type(rr) == ns_t_a) {
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diff changeset
396 char* nam = (char*)ns_rr_name(rr);
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diff changeset
397 ns_mapper::iterator i = ns.ns_ip.find(nam);
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diff changeset
398 if (i != ns.ns_ip.end()) {
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parents: 235
diff changeset
399 // we want this ip address
252
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diff changeset
400 uint32_t address;
236
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diff changeset
401 memcpy(&address, ns_rr_rdata(rr), sizeof(address));
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diff changeset
402 ns.ns_ip[nam] = address;
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parents: 235
diff changeset
403 }
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parents: 235
diff changeset
404 }
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parents: 235
diff changeset
405 }
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diff changeset
406 }
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diff changeset
407 int rrnum = 0;
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parents: 235
diff changeset
408 while (ns_parserr(&handle, ns_s_an, rrnum++, &rr) == 0) {
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diff changeset
409 if (ns_rr_type(rr) == ns_t_a) {
252
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diff changeset
410 uint32_t address;
236
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diff changeset
411 memcpy(&address, ns_rr_rdata(rr), sizeof(address));
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diff changeset
412 ret_address = address;
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diff changeset
413 }
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diff changeset
414 }
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diff changeset
415 }
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diff changeset
416 pthread_mutex_unlock(&resolve_mutex);
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diff changeset
417 #ifdef RESOLVER_DEBUG
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diff changeset
418 snprintf(text, sizeof(text), "dns_interface() found ip %d", ret_address);
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diff changeset
419 my_syslog(text);
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diff changeset
420 #endif
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diff changeset
421 return ret_address;
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diff changeset
422 #else
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diff changeset
423 return glom.answer;
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diff changeset
424 #endif
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diff changeset
425 }
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diff changeset
426
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parents: 235
diff changeset
427
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diff changeset
428 ////////////////////////////////////////////////
270
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diff changeset
429 // lookup a hostname on the uribl
236
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diff changeset
430 //
270
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431 // if we find hostname on the uribl, return true and point found to hostname
236
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diff changeset
432 // as a string registered in hosts.
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diff changeset
433 // otherwise, return false and preserve the value of found.
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diff changeset
434 //
270
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435 bool uriblookup(mlfiPriv &priv, string_set &hosts, const char *hostname, const char *&found) ;
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436 bool uriblookup(mlfiPriv &priv, string_set &hosts, const char *hostname, const char *&found) {
236
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diff changeset
437 char buf[maxlen];
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diff changeset
438 snprintf(buf, sizeof(buf), "%s.%s.", hostname, priv.uribl_suffix);
270
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439 uint32_t ip = ntohl(dns_interface(priv, buf, false, NULL));
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diff changeset
440 if (ip and (ip != 0x7f000000)) {
236
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diff changeset
441 if (debug_syslog > 2) {
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diff changeset
442 char tmp[maxlen];
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diff changeset
443 snprintf(tmp, sizeof(tmp), "found %s on %s", hostname, priv.uribl_suffix);
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diff changeset
444 my_syslog(tmp);
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diff changeset
445 }
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diff changeset
446 found = register_string(hosts, hostname);
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diff changeset
447 return true;
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diff changeset
448 }
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diff changeset
449 return false;
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diff changeset
450 }
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parents: 235
diff changeset
451
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diff changeset
452
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diff changeset
453 ////////////////////////////////////////////////
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diff changeset
454 // uribl checker
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diff changeset
455 // -------------
270
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456 // hostname MUST not have a trailing dot. Find the tld part of
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diff changeset
457 // the hostname, and add one more level. If that is listed on
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diff changeset
458 // the uribl, return true and point found to the part of the
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459 // hostname that we found as a string registered in hosts.
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diff changeset
460 // Otherwise, return false and preserve the value of found.
236
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diff changeset
461 //
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diff changeset
462 bool check_uribl(mlfiPriv &priv, string_set &hosts, const char *hostname, const char *&found) ;
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463 bool check_uribl(mlfiPriv &priv, string_set &hosts, const char *hostname, const char *&found) {
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diff changeset
464 in_addr ip;
270
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465 if (inet_aton(hostname, &ip)) return false; // don't check ip addresses in uribls
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diff changeset
466 const char* components[maxlen];
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467 int n = 0; // number of components in the hostname
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diff changeset
468 while (n < maxlen) {
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diff changeset
469 components[n++] = hostname;
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470 const char *c = strchr(hostname, '.');
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diff changeset
471 if (!c) break;
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diff changeset
472 hostname = c+1;
236
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diff changeset
473 }
270
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diff changeset
474 string_set *tlds = priv.memory->get_tlds();
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diff changeset
475 string_set *tldwilds = priv.memory->get_tldwilds();
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diff changeset
476 string_set *tldnots = priv.memory->get_tldnots();
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diff changeset
477 string_set::iterator xtlds = tlds->end();
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diff changeset
478 string_set::iterator xtldwilds = tldwilds->end();
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diff changeset
479 string_set::iterator xtldnots = tldnots->end();
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diff changeset
480 for (int i=max(0,n-4); i<n; i++) {
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diff changeset
481 const char* name = components[i];
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diff changeset
482 bool rc = false;
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483 string_set::iterator tt = tldnots->find(name);
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diff changeset
484 if (tt != xtldnots) {
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diff changeset
485 rc = true;
236
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diff changeset
486 }
270
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diff changeset
487 else {
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488 tt = tldwilds->find(name);
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diff changeset
489 if (tt != xtldwilds) {
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diff changeset
490 if (i > 1) {
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diff changeset
491 rc = true;
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diff changeset
492 name = components[i-2];
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diff changeset
493 }
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diff changeset
494 else return false;
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diff changeset
495 }
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diff changeset
496 else {
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diff changeset
497 tt = tlds->find(name);
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diff changeset
498 if (tt != xtlds) {
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diff changeset
499 if (i > 0) {
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diff changeset
500 rc = true;
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diff changeset
501 name = components[i-1];
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diff changeset
502 }
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diff changeset
503 else return false;
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diff changeset
504 }
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diff changeset
505 }
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diff changeset
506 }
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diff changeset
507 if (rc) {
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diff changeset
508 return uriblookup(priv, hosts, name, found);
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diff changeset
509 }
236
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diff changeset
510 }
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diff changeset
511 return false;
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diff changeset
512 }
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diff changeset
513
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diff changeset
514
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
515 mlfiPriv::mlfiPriv() {
192
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516 pthread_mutex_lock(&config_mutex);
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517 pc = config;
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diff changeset
518 pc->reference_count++;
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519 pthread_mutex_unlock(&config_mutex);
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diff changeset
520 get_fd();
230
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diff changeset
521 ctx = NULL;
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522 eom = false;
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523 ip = 0;
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524 helo = NULL;
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parents: 227
diff changeset
525 mailaddr = NULL;
350
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
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parents: 348
diff changeset
526 origaddr = NULL;
321
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parents: 311
diff changeset
527 fromaddr = NULL;
e172dc10fe24 add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 311
diff changeset
528 header_count = 0;
322
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
529 dkim_ok = true;
230
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
530 queueid = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
531 authenticated = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
532 client_name = NULL;
257
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
533 client_dns_name = NULL;
268
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
534 client_dns_forged = false;
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
535 host_uribl = NULL;
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
536 helo_uribl = false;
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
537 client_uribl = false;
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
538 from_uribl = false;
230
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
539 have_whites = false;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
540 only_whites = true;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
541 want_spamassassin = false;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
542 want_dccgrey = false;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
543 want_dccbulk = false;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
544 allow_autowhitelisting = true;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
545 content_context = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
546 memory = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
547 scanner = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
548 content_suffix = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
549 content_message = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
550 uribl_suffix = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
551 uribl_message = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
552 content_host_ignore = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
553 assassin = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
554 dccifd = NULL;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
555 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
556
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
557 mlfiPriv::~mlfiPriv() {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
558 return_fd();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
559 pthread_mutex_lock(&config_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
560 pc->reference_count--;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
561 bool last = (!pc->reference_count) && (pc != config);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
562 pthread_mutex_unlock(&config_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
563 if (last) delete pc; // free this config, since we were the last reference to it
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
564 if (helo) free((void*)helo);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
565 reset(true);
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
566 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
567
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
568 void mlfiPriv::reset(bool final) {
194
688ec12a3c0c delay autowhitelisting to avoid out of office reply bots
carl
parents: 193
diff changeset
569 while (!delayer.empty()) {
231
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
570 DELAYWHITEP dwp = delayer.front();
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
571 const char *loto = dwp->get_loto();
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
572 if (loto) free((void*)loto);
193
3ea79ef741a0 delay autowhitelisting to avoid out of office reply bots
carl
parents: 192
diff changeset
573 delete dwp;
3ea79ef741a0 delay autowhitelisting to avoid out of office reply bots
carl
parents: 192
diff changeset
574 delayer.pop_front();
3ea79ef741a0 delay autowhitelisting to avoid out of office reply bots
carl
parents: 192
diff changeset
575 }
257
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
576 if (mailaddr) free((void*)mailaddr);
350
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
577 if (origaddr) free((void*)origaddr);
321
e172dc10fe24 add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 311
diff changeset
578 if (fromaddr) free((void*)fromaddr);
257
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
579 if (queueid) free((void*)queueid);
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
580 if (authenticated) free((void*)authenticated);
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
581 if (client_name) free((void*)client_name);
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
582 if (client_dns_name) free((void*)client_dns_name);
326
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
583 discard(dkim_signers);
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
584 discard(hosts_uribl);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
585 delayer.clear();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
586 discard(env_to);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
587 if (memory) delete memory;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
588 if (scanner) delete scanner;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
589 if (assassin) delete assassin;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
590 if (dccifd) delete dccifd;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
591 if (!final) {
230
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
592 ctx = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
593 eom = false;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
594 mailaddr = NULL;
350
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
595 origaddr = NULL;
321
e172dc10fe24 add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 311
diff changeset
596 fromaddr = NULL;
e172dc10fe24 add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 311
diff changeset
597 header_count = 0;
322
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
598 dkim_ok = true;
230
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
599 queueid = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
600 authenticated = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
601 client_name = NULL;
257
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
602 client_dns_name = NULL;
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
603 host_uribl = NULL;
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
604 helo_uribl = false;
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
605 client_uribl = false;
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
606 from_uribl = false;
230
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
607 have_whites = false;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
608 only_whites = true;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
609 want_spamassassin = false;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
610 want_dccgrey = false;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
611 want_dccbulk = false;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
612 allow_autowhitelisting = true;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
613 content_context = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
614 memory = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
615 scanner = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
616 content_suffix = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
617 content_message = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
618 uribl_suffix = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
619 uribl_message = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
620 content_host_ignore = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
621 assassin = NULL;
ad38575e98ca Prevent auto whitelisting due to outgoing multipart/report delivery notifications.
Carl Byington <carl@five-ten-sg.com>
parents: 227
diff changeset
622 dccifd = NULL;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
623 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
624 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
625
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
626 void mlfiPriv::get_fd() {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
627 err = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
628 fd = NULL_SOCKET;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
629 int result = pthread_mutex_lock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
630 if (!result) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
631 std::set<int>::iterator i;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
632 i = fd_pool.begin();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
633 if (i != fd_pool.end()) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
634 // have at least one fd in the pool
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
635 err = false;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
636 fd = *i;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
637 fd_pool.erase(fd);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
638 resolver_pool_size--;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
639 pthread_mutex_unlock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
640 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
641 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
642 // pool is empty, get a new fd
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
643 pthread_mutex_unlock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
644 fd = my_connect();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
645 err = (fd == NULL_SOCKET);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
646 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
647 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
648 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
649 // cannot lock the pool, just get a new fd
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
650 fd = my_connect();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
651 err = (fd == NULL_SOCKET);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
652 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
653 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
654
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
655 void mlfiPriv::return_fd() {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
656 if (err) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
657 // this fd got a socket error, so close it, rather than returning it to the pool
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
658 my_disconnect(fd);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
659 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
660 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
661 int result = pthread_mutex_lock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
662 if (!result) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
663 if ((resolver_sock_count > resolver_pool_size*5) || (resolver_pool_size < 5)) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
664 // return the fd to the pool
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
665 fd_pool.insert(fd);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
666 resolver_pool_size++;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
667 pthread_mutex_unlock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
668 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
669 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
670 // more than 20% of the open resolver sockets are in the pool, and the
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
671 // pool as at least 5 sockets. that is enough, so just close this one.
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
672 pthread_mutex_unlock(&fd_pool_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
673 my_disconnect(fd);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
674 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
675 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
676 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
677 // could not lock the pool, so just close the fd
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
678 my_disconnect(fd);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
679 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
680 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
681 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
682
177
a4d313c2460b start embedded dcc filtering
carl
parents: 174
diff changeset
683 size_t mlfiPriv::my_write(const char *buf, size_t len) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
684 if (err) return 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
685 size_t rs = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
686 while (len) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
687 size_t ws = write(fd, buf, len);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
688 if (ws > 0) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
689 rs += ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
690 len -= ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
691 buf += ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
692 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
693 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
694 // peer closed the socket!
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
695 rs = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
696 err = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
697 break;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
698 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
699 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
700 return rs;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
701 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
702
177
a4d313c2460b start embedded dcc filtering
carl
parents: 174
diff changeset
703 size_t mlfiPriv::my_read(char *buf, size_t len) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
704 if (err) return 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
705 size_t rs = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
706 while (len) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
707 size_t ws = read(fd, buf, len);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
708 if (ws > 0) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
709 rs += ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
710 len -= ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
711 buf += ws;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
712 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
713 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
714 // peer closed the socket!
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
715 rs = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
716 err = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
717 break;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
718 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
719 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
720 return rs;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
721 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
722
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
723 void mlfiPriv::need_content_filter(CONTEXT &con) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
724 if (!memory) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
725 // first recipient that needs content filtering sets
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
726 // 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
727 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
728 scanner = new url_scanner(memory);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
729 content_suffix = con.get_content_suffix();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
730 content_message = con.get_content_message();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
731 uribl_suffix = con.get_uribl_suffix();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
732 uribl_message = con.get_uribl_message();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
733 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
734 // 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
735 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
736 if (helo) {
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
737 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
738 }
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
739 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
740 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
741 }
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
742 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
743 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
744 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
745 }
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
746 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
747 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
748 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
749
186
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
750
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
751 mlfiPriv* fetch_priv_from_ctx(SMFICTX *ctx);
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
752 mlfiPriv* fetch_priv_from_ctx(SMFICTX *ctx)
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
753 {
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
754 mlfiPriv *priv = (struct mlfiPriv *)smfi_getpriv(ctx);
187
f0eda59e8afd fix null pointer dereference from missing HELO command
carl
parents: 186
diff changeset
755 priv->ctx = ctx;
186
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
756 return priv;
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
757 }
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
758 #define MLFIPRIV fetch_priv_from_ctx(ctx)
2a80c9b5d2c9 fix null pointer dereference from missing HELO command
carl
parents: 185
diff changeset
759
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
760
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
761
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
762 ////////////////////////////////////////////////
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
763 // syslog a message
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
764 //
310
802e2b779ed1 enable smtp verify logging
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
765 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
766 char buf[maxlen];
311
f5547e7b3a09 enable smtp verify logging
Carl Byington <carl@five-ten-sg.com>
parents: 310
diff changeset
767 if (queueid && queueid[0]) {
310
802e2b779ed1 enable smtp verify logging
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
768 snprintf(buf, sizeof(buf), "%s: %s", queueid, text);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
769 text = buf;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
770 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
771 if (use_syslog) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
772 pthread_mutex_lock(&syslog_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
773 if (!syslog_opened) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
774 openlog("dnsbl", LOG_PID, LOG_MAIL);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
775 syslog_opened = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
776 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
777 syslog(LOG_NOTICE, "%s", text);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
778 pthread_mutex_unlock(&syslog_mutex);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
779 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
780 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
781 printf("%s \n", text);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
782 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
783 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
784
310
802e2b779ed1 enable smtp verify logging
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
785 void my_syslog(mlfiPriv *priv, const char *text) {
802e2b779ed1 enable smtp verify logging
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
786 if (priv) my_syslog(priv->queueid, text);
802e2b779ed1 enable smtp verify logging
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
787 else my_syslog((const char *)NULL, text);
802e2b779ed1 enable smtp verify logging
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
788 }
802e2b779ed1 enable smtp verify logging
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
789
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
790 void my_syslog(mlfiPriv *priv, const string text) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
791 if (debug_syslog > 3) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
792 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
793 strncpy(buf, text.c_str(), sizeof(buf));
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
794 buf[maxlen-1] = '\0'; // ensure null termination
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
795 my_syslog(priv, buf);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
796 }
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
797 }
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
798
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
799 void my_syslog(const char *text) {
310
802e2b779ed1 enable smtp verify logging
Carl Byington <carl@five-ten-sg.com>
parents: 301
diff changeset
800 my_syslog((const char *)NULL, text);
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
801 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
802
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
803
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
804 ////////////////////////////////////////////////
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
805 // 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
806 // write the result back to the socket.
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
807
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
808 void process_resolver_requests(int socket);
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
809 void process_resolver_requests(int socket) {
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
810 #ifdef NS_MAXDNAME
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
811 char question[NS_MAXDNAME];
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
812 #else
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
813 char question[1000];
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
814 #endif
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
815 glommer glom;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
816
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
817 int maxq = sizeof(question);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
818 while (true) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
819 // read a question
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
820 int rs = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
821 while (rs < maxq) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
822 int ns = read(socket, question+rs, maxq-rs);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
823 if (ns > 0) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
824 rs += ns;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
825 if (question[rs-1] == '\0') {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
826 // 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
827 break;
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 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
830 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
831 // peer closed the socket
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
832 #ifdef RESOLVER_DEBUG
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carl
parents: 191
diff changeset
833 my_syslog("process_resolver_requests() peer closed socket while reading question");
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carl
parents: 191
diff changeset
834 #endif
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carl
parents: 191
diff changeset
835 shutdown(socket, SHUT_RDWR);
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carl
parents: 191
diff changeset
836 close(socket);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
837 return;
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carl
parents: 191
diff changeset
838 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
839 }
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carl
parents: 191
diff changeset
840 question[rs-1] = '\0'; // ensure null termination
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
841
192
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carl
parents: 191
diff changeset
842 // find the answer
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
843 #ifdef NS_PACKETSZ
192
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carl
parents: 191
diff changeset
844 #ifdef RESOLVER_DEBUG
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carl
parents: 191
diff changeset
845 char text[1000];
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carl
parents: 191
diff changeset
846 snprintf(text, sizeof(text), "process_resolver_requests() has a question %s", question);
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carl
parents: 191
diff changeset
847 my_syslog(text);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
848 #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
849 int res_result = res_search(question, ns_c_in, ns_t_a, glom.answer, sizeof(glom.answer));
da9e7f1c8160 fix unsigned signed compare, back to mixed -lresolv and libresolv.a with auto requires
Carl Byington <carl@five-ten-sg.com>
parents: 222
diff changeset
850 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
851 else glom.length = (size_t)res_result;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
852 #else
192
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carl
parents: 191
diff changeset
853 glom.length = sizeof(glom.answer);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
854 glom.answer = 0;
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carl
parents: 191
diff changeset
855 struct hostent *host = gethostbyname(question);
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carl
parents: 191
diff changeset
856 if (host && (host->h_addrtype == AF_INET)) {
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carl
parents: 191
diff changeset
857 memcpy(&glom.answer, host->h_addr, sizeof(glom.answer));
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carl
parents: 191
diff changeset
858 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
859 #endif
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carl
parents: 92
diff changeset
860
192
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carl
parents: 191
diff changeset
861 // write the answer
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
862 char *buf = (char *)&glom;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
863 int len = glom.length + sizeof(glom.length);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
864 #ifdef RESOLVER_DEBUG
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carl
parents: 191
diff changeset
865 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
866 my_syslog(text);
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carl
parents: 191
diff changeset
867 #endif
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carl
parents: 191
diff changeset
868 int ws = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
869 while (len > ws) {
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carl
parents: 191
diff changeset
870 int ns = write(socket, buf+ws, len-ws);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
871 if (ns > 0) {
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carl
parents: 191
diff changeset
872 ws += ns;
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carl
parents: 191
diff changeset
873 }
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carl
parents: 191
diff changeset
874 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
875 // peer closed the socket!
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
876 #ifdef RESOLVER_DEBUG
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
877 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
878 #endif
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carl
parents: 191
diff changeset
879 shutdown(socket, SHUT_RDWR);
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carl
parents: 191
diff changeset
880 close(socket);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
881 return;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
882 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
883 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
884 }
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
885 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
886
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
887
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
888 ////////////////////////////////////////////////
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
889 // check a single dns list, return ip address in network byte order
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
890 //
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
891 uint32_t check_single(mlfiPriv &priv, int32_t ip, const char *suffix);
836b7f2357f9 need ntohl() before using masks that are defined in host byte order
Carl Byington <carl@five-ten-sg.com>
parents: 249
diff changeset
892 uint32_t check_single(mlfiPriv &priv, int32_t ip, const char *suffix) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
893 // make a dns question
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
894 const u_char *src = (const u_char *)&ip;
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
895 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
896 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
897 if ((src[0] == 192) && (src[1] == 168)) return 0;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
898 if ((src[0] == 172) && (16 <= src[1]) && (src[1] <= 31)) return 0;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
899 #ifdef NS_MAXDNAME
192
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carl
parents: 191
diff changeset
900 char question[NS_MAXDNAME];
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
901 #else
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
902 char question[1000];
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
903 #endif
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
904 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
905 // ask the question, if we get an A record it implies a blacklisted ip address
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
906 return dns_interface(priv, question, false, NULL);
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
907 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
908
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
909
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
910 ////////////////////////////////////////////////
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
911 // check a single dnsbl
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
912 //
242
d8ee4c97b9ab 64 bit fixes for libresolv.a
Carl Byington <carl@five-ten-sg.com>
parents: 238
diff changeset
913 bool check_single(mlfiPriv &priv, int32_t ip, DNSBL &bl);
d8ee4c97b9ab 64 bit fixes for libresolv.a
Carl Byington <carl@five-ten-sg.com>
parents: 238
diff changeset
914 bool check_single(mlfiPriv &priv, int32_t ip, DNSBL &bl) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
915 return check_single(priv, ip, bl.suffix);
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
916 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
917
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
918
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
919 ////////////////////////////////////////////////
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
920 // check a single dnswl
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
921 //
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
922 bool check_single(mlfiPriv &priv, int32_t ip, DNSWL &wl);
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
923 bool check_single(mlfiPriv &priv, int32_t ip, DNSWL &wl) {
252
836b7f2357f9 need ntohl() before using masks that are defined in host byte order
Carl Byington <carl@five-ten-sg.com>
parents: 249
diff changeset
924 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
925 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
926 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
927 uint32_t m2 = (uint32_t)0x000000ff;
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
928 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
929 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
930 if ((int)l >= wl.level) return true;
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
931 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
932 return false;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
933 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
934
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
935
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
936 ////////////////////////////////////////////////
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
937 // check the dnsbls specified for this recipient
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
938 //
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
939 bool check_dnsbl(mlfiPriv &priv, dnsblp_list &dnsbll, DNSBLP &rejectlist);
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
940 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
941 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
942 DNSBLP dp = *i; // non null by construction
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
943 bool st;
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
944 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
945 if (f == priv.checked_black.end()) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
946 // have not checked this list yet
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
947 st = check_single(priv, priv.ip, *dp);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
948 rejectlist = dp;
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
949 priv.checked_black[dp] = st;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
950 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
951 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
952 st = (*f).second;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
953 rejectlist = (*f).first;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
954 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
955 if (st) return st;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
956 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
957 return false;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
958 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
959
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
960
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
961 ////////////////////////////////////////////////
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
962 // check the dnswls specified for this recipient
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
963 //
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
964 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
965 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
966 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
967 DNSWLP dp = *i; // non null by construction
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
968 bool st;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
969 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
970 if (f == priv.checked_white.end()) {
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
971 // have not checked this list yet
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
972 st = check_single(priv, priv.ip, *dp);
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
973 acceptlist = dp;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
974 priv.checked_white[dp] = st;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
975 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
976 else {
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
977 st = (*f).second;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
978 acceptlist = (*f).first;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
979 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
980 if (st) return st;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
981 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
982 return false;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
983 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
984
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
985
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
986 ////////////////////////////////////////////////
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
987 // check the hosts from the body against the content filter and uribl dnsbls
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
988 //
124
ea6f9c812faa put hostname in smtp message for uribl style lookups
carl
parents: 123
diff changeset
989 //
242
d8ee4c97b9ab 64 bit fixes for libresolv.a
Carl Byington <carl@five-ten-sg.com>
parents: 238
diff changeset
990 bool check_hosts(mlfiPriv &priv, bool random, int limit, const char *&msg, const char *&host, int32_t &ip, const char *&found);
d8ee4c97b9ab 64 bit fixes for libresolv.a
Carl Byington <carl@five-ten-sg.com>
parents: 238
diff changeset
991 bool check_hosts(mlfiPriv &priv, bool random, int limit, const char *&msg, const char *&host, int32_t &ip, const char *&found) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
992 found = NULL; // normally ip address style
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
993 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
994 string_set &hosts = priv.memory->get_hosts();
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
995 string_set &ignore = *priv.content_host_ignore;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
996
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
997 int count = 0;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
998 int cnt = hosts.size(); // number of hosts we could look at
242
d8ee4c97b9ab 64 bit fixes for libresolv.a
Carl Byington <carl@five-ten-sg.com>
parents: 238
diff changeset
999 int32_t_set ips;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1000 ns_map nameservers;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1001 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
1002 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
1003
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1004 // 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
1005 string_set::iterator j = ignore.find(host);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1006 if (j != ignore.end()) continue;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1007
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1008 // 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
1009 if ((cnt > limit) && (limit > 0) && random) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1010 int r = rand() % cnt;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1011 if (r >= limit) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1012 if (debug_syslog > 2) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1013 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1014 snprintf(buf, sizeof(buf), "host %s skipped", host);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1015 my_syslog(&priv, buf);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1016 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1017 continue;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1018 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1019 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1020 count++;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1021 ip = dns_interface(priv, host, true, &nameservers);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1022 if (debug_syslog > 2) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1023 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1024 if (ip) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1025 char adr[sizeof "255.255.255.255 "];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1026 adr[0] = '\0';
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1027 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
1028 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
1029 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1030 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1031 snprintf(buf, sizeof(buf), "host %s not found", host);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1032 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1033 my_syslog(&priv, buf);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1034 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1035 if (ip) {
242
d8ee4c97b9ab 64 bit fixes for libresolv.a
Carl Byington <carl@five-ten-sg.com>
parents: 238
diff changeset
1036 int32_t_set::iterator i = ips.find(ip);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1037 if (i == ips.end()) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1038 // we haven't looked this up yet
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1039 ips.insert(ip);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1040 // check dnsbl style list
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1041 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
1042 msg = priv.content_message;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1043 return true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1044 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1045 // Check uribl & surbl style list
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1046 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
1047 msg = priv.uribl_message;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1048 return true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1049 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1050 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1051 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1052 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1053 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
1054 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
1055 count++;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1056 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
1057 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
1058 ip = (*i).second;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1059 if (!ip) ip = dns_interface(priv, host, false, NULL);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1060 if (debug_syslog > 2) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1061 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1062 if (ip) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1063 char adr[sizeof "255.255.255.255 "];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1064 adr[0] = '\0';
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1065 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
1066 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
1067 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1068 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1069 snprintf(buf, sizeof(buf), "ns %s not found", host);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1070 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1071 my_syslog(&priv, buf);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1072 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1073 if (ip) {
242
d8ee4c97b9ab 64 bit fixes for libresolv.a
Carl Byington <carl@five-ten-sg.com>
parents: 238
diff changeset
1074 int32_t_set::iterator i = ips.find(ip);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1075 if (i == ips.end()) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1076 ips.insert(ip);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1077 if (check_single(priv, ip, priv.content_suffix)) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1078 msg = priv.content_message;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1079 string_map::iterator j = nameservers.ns_host.find(host);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1080 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
1081 const char *refer = (*j).second;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1082 char buf[maxlen];
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1083 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
1084 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
1085 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1086 else {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1087 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
1088 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1089 return true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1090 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1091 }
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 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1094 return false;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1095 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1096
127
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 126
diff changeset
1097
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1098 ////////////////////////////////////////////////
127
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 126
diff changeset
1099 //
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 126
diff changeset
1100 // 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
1101 // enclosed in <>. I think older versions of sendmail supplied the <>
127
2b1a4701e856 sendmail no longer guarantees <> wrapper on envelopes
carl
parents: 126
diff changeset
1102 // 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
1103 // 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
1104 // 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
1105 // 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
1106 // 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
1107 //
346
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1108 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
1109 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
1110 if (!email) return strdup("<>");
328
b4f766947202 allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 327
diff changeset
1111 size_t n = strlen(email);
b4f766947202 allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 327
diff changeset
1112 if ((n > 1) && (email[0] == '<') && (email[n-1] == '>')) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1113 n -= 2;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1114 email++;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1115 }
328
b4f766947202 allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 327
diff changeset
1116 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
1117 n -= 2;
b4f766947202 allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 327
diff changeset
1118 email++;
b4f766947202 allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 327
diff changeset
1119 }
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
1120 if (n == 0) return strdup("<>");
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1121 char *key = strdup(email);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1122 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
1123 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
1124
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1125 if (srs) {
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1126 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
1127 // 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
1128 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
1129 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
1130 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
1131 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
1132 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
1133 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
1134 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
1135 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
1136 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
1137 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
1138 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
1139 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
1140 strcat(newkey, "@"); // @
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1141 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
1142 free(key);
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1143 key = newkey;
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1144 }
235
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1145 }
e6c66640f6f9 Add SRS decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 233
diff changeset
1146 }
346
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1147 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
1148 // 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
1149 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
1150 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
1151 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
1152 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
1153 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
1154 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
1155 free(key);
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1156 key = newkey;
66969443a012 need to strip <> from recipient address before sending to verifier
Carl Byington <carl@five-ten-sg.com>
parents: 344
diff changeset
1157 }
246
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1158 }
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1159 }
8b0f16abee53 Add prvs decoding to envelope addresses
Carl Byington <carl@five-ten-sg.com>
parents: 244
diff changeset
1160 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1161 return key;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1162 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1163
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1164
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1165 ////////////////////////////////////////////////
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1166 // start of sendmail milter interfaces
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1167 //
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1168 sfsistat mlfi_connect(SMFICTX *ctx, char *hostname, _SOCK_ADDR *hostaddr)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1169 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1170 // allocate some private memory
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1171 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
1172 if (hostaddr && (hostaddr->sa_family == AF_INET)) {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1173 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
1174 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1175 // save the private data
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1176 smfi_setpriv(ctx, (void*)priv);
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1177
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1178 // continue processing
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1179 return SMFIS_CONTINUE;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1180 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1181
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1182 sfsistat mlfi_helo(SMFICTX * ctx, char *helohost)
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1183 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1184 mlfiPriv &priv = *MLFIPRIV;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1185 priv.helo = strdup(helohost);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1186 return SMFIS_CONTINUE;
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1187 }
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1188
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1189 sfsistat mlfi_envfrom(SMFICTX *ctx, char **from)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1190 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1191 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
1192 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
1193 priv.origaddr = to_lower_string(from[0], false);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1194 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
1195 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
1196 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
1197 priv.client_name = smfi_getsymval(ctx, (char*)"_");
191
2a67d31099c3 fix null pointer dereference from missing HELO command
carl
parents: 190
diff changeset
1198 if (!priv.helo) priv.helo = strdup("unknown");
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1199 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
1200 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
1201 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
1202 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
1203 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
1204 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
1205 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
1206 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
1207 //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
1208 //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
1209 //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
1210 }
268
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1211 p = strstr(priv.client_name, "] (may be forged)");
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1212 if (p) {
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1213 priv.client_dns_forged = true;
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1214 if (priv.client_dns_name) {
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1215 char text[500];
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1216 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
1217 my_syslog(text);
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1218 }
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1219 }
257
d11b529ce9c5 Fix uribl lookups on client dns name, need to strip the ip address in brackets
Carl Byington <carl@five-ten-sg.com>
parents: 255
diff changeset
1220 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1221 if (spamc != spamc_empty) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1222 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
1223 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1224 if (dccifd_port) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1225 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
1226 }
290
bb69fdc3acaa Unique ip connection limits only apply to authenticated connections
Carl Byington <carl@five-ten-sg.com>
parents: 286
diff changeset
1227 if (priv.authenticated) {
284
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 282
diff changeset
1228 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
1229 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
1230 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
1231 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
1232 if (debug_syslog > 1) {
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 282
diff changeset
1233 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
1234 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
1235 my_syslog(&priv, msg);
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 282
diff changeset
1236 }
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 282
diff changeset
1237 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
1238 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
1239 return SMFIS_REJECT;
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 282
diff changeset
1240 }
896b9393d3f0 Fix segfault caused by freeing unallocated memory
Carl Byington <carl@five-ten-sg.com>
parents: 282
diff changeset
1241 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1242 return SMFIS_CONTINUE;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1243 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1244
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1245 sfsistat mlfi_envrcpt(SMFICTX *ctx, char **rcpt)
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1246 {
278
368572c57013 add limits on unique ip addresses per hour per authenticated user
Carl Byington <carl@five-ten-sg.com>
parents: 272
diff changeset
1247 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
1248 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
1249 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
1250 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
1251 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
1252 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
1253 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
1254 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
1255 bool from_root = (strncasecmp(priv.mailaddr, "root@", 5) == 0);
174
da0c41b9f672 don't whitelist addresses with embedded spaces
carl
parents: 173
diff changeset
1256
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1257 // 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
1258 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
1259 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
1260 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
1261 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1262 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1263 // 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
1264 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
1265 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
1266 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
1267 // tell spam assassin and dccifd about this recipient
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1268 if (priv.assassin) priv.assassin->mlfi_envrcpt(ctx, loto);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1269 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
1270 // loto sending a reply back to priv.mailaddr
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1271 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
1272 const char *replyvalue = con2.find_from(loto);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1273 if (debug_syslog > 1) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1274 char buf[maxlen];
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1275 char buf2[maxlen];
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1276 char msg[maxlen];
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1277 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
1278 my_syslog(&priv, msg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1279 }
214
82886d4dd71f Fixes to compile on Fedora 9 and for const correctness.
Carl Byington <carl@five-ten-sg.com>
parents: 211
diff changeset
1280 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
1281 status st = oksofar;
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1282 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
1283 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
1284 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1285 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1286 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
1287 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
1288 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
1289 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
1290 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
1291 if (debug_syslog > 1) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1292 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
1293 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
1294 my_syslog(&priv, msg);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1295 }
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
1296 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
1297 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
1298 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1299 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1300 st = white;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1301 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1302 else if (fromvalue == token_black) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1303 st = black;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1304 }
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
1305 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
1306 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
1307 }
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
1308 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
1309 // 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
1310 // 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
1311 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
1312 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
1313 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
1314 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
1315 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
1316 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
1317 }
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
1318 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
1319 }
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
1320 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
1321 }
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
1322
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
1323 if (st == oksofar) {
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1324 // check the dns based lists, whitelist first
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1325 DNSWLP acceptlist = NULL; // list that caused the whitelisting
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1326 if (check_dnswl(priv, con.get_dnswl_list(), acceptlist)) {
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1327 st = white;
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1328 if (debug_syslog > 1) {
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1329 char msg[maxlen];
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1330 snprintf(msg, sizeof(msg), "whitelisted by %s", acceptlist->name);
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1331 my_syslog(&priv, msg);
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1332 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1333 }
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1334 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
1335 // 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
1336 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
1337 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
1338 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
1339 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
1340 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
1341 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
1342 return SMFIS_REJECT;
249
15bf4f68a0b2 Add dnswl support
Carl Byington <carl@five-ten-sg.com>
parents: 248
diff changeset
1343 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1344 }
340
be776a246f97 when dkim require_signed overrides envelope from whitelisting, we still want to check dns based white/blacklists before content filtering
Carl Byington <carl@five-ten-sg.com>
parents: 338
diff changeset
1345
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1346 if (st == oksofar) {
268
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1347 // check forged rdns
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1348 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
1349 // reject the recipient based on forged reverse dns
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1350 char buf[maxlen];
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1351 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
1352 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
1353 return SMFIS_REJECT;
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1354 }
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1355 // 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
1356 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
1357 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
1358 if (msg) {
13905d36ca82 Generic regex now matches against the reverse dns PTR value
Carl Byington <carl@five-ten-sg.com>
parents: 296
diff changeset
1359 // 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
1360 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
1361 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
1362 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
1363 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
1364 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1365 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1366 }
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
1367
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1368 if (st == black) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1369 // 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
1370 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
1371 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1372 }
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
1373
203
92a5c866bdfa Verify from/to pairs even if they might be explicitly whitelisted.
Carl Byington <carl@five-ten-sg.com>
parents: 194
diff changeset
1374 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
1375 // 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
1376 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
1377 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
1378 free((void*)loto);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1379 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
1380 smfi_setreply(ctx, (char*)"550", (char*)"5.7.1", (char*)"no such user");
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1381 return SMFIS_REJECT;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1382 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1383 }
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
1384
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
1385 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
1386 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
1387 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
1388 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
1389 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
1390 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
1391 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
1392 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
1393 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
1394 }
e118fd2c6af0 fix unauthenticated rate limit bug for empty mail from; move unauthenticate rate limit checks after spam filtering
Carl Byington <carl@five-ten-sg.com>
parents: 259
diff changeset
1395 if ((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
1396 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
1397 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
1398 }
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
1399 }
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
1400
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1401 // 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
1402 // if needed to ensure we can accept replies
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1403 loto = to_lower_string(rcptaddr);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1404 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
1405
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1406 // check if local part is too big
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1407 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
1408 const char *p = strchr(loto, '@');
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1409 int len = (p) ? p-loto : max_local_size;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1410 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
1411
9f0d9fcb58dd Never add auto-whitelist entries for outgoing mail from localhost
Carl Byington <carl@five-ten-sg.com>
parents: 290
diff changeset
1412 // 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
1413 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
1414
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1415 // record it if we have a whitelister
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1416 if (w) {
231
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1417 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
1418 priv.delayer.push_back(dwp);
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1419 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1420 else {
231
4d6bd04d93fa Fix memory leak in suppressed auto whitelisting.
Carl Byington <carl@five-ten-sg.com>
parents: 230
diff changeset
1421 free((void*)loto); // or we free it here
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1422 }
179
8b86a894514d embedded dcc filtering
carl
parents: 178
diff changeset
1423
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1424 // accept the recipient
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1425 if (!con.get_content_filtering()) st = white;
179
8b86a894514d embedded dcc filtering
carl
parents: 178
diff changeset
1426
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1427 if (st == oksofar) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1428 // remember first content filtering context
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1429 if (con.get_content_filtering()) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1430 if (!priv.content_context) priv.content_context = &con;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1431 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
1432 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
1433 return SMFIS_TEMPFAIL;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1434 }
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 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
1436 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
1437 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
1438 // content filtering implies also checking helo name on uribl (if enabled)
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
1439 if (priv.helo_uribl) {
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
1440 snprintf(bu, sizeof(bu), "(helo %s)", priv.host_uribl);
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
1441 uri = true;
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
1442 }
268
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1443 // content filtering implies also checking client reverse dns name on uribl (if enabled)
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
1444 if (priv.client_uribl) {
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
1445 snprintf(bu, sizeof(bu), "(rdns %s)", priv.host_uribl);
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
1446 uri = true;
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
1447 }
268
f941563c2a95 Add require_rdns checking
Carl Byington <carl@five-ten-sg.com>
parents: 266
diff changeset
1448 // content filtering implies also checking mail from domain name on uribl (if enabled)
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
1449 if (priv.from_uribl) {
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
1450 snprintf(bu, sizeof(bu), "(from %s)", priv.host_uribl);
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
1451 uri = true;
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
1452 }
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
1453 if (uri) {
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
1454 char buf[maxlen];
238
7b818a4e21a4 produce correct uribl message
Carl Byington <carl@five-ten-sg.com>
parents: 236
diff changeset
1455 snprintf(buf, sizeof(buf), priv.uribl_message, bu, priv.host_uribl);
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
1456 smfi_setreply(ctx, (char*)"550", (char*)"5.7.1", buf);
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
1457 return SMFIS_REJECT;
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
1458 }
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1459 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1460 // remember the non-whites
236
c0d2e99c0a1d Add surbl checks on the smtp helo value, client reverse dns name, and mail from domain name
Carl Byington <carl@five-ten-sg.com>
parents: 235
diff changeset
1461 register_string(priv.env_to, rcptaddr, &con);
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1462 priv.only_whites = false;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1463 priv.want_spamassassin |= (priv.assassin) && // have spam assassin available and
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1464 (con.get_spamassassin_limit() != 0); // want to use it with a non-zero score
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1465 priv.want_dccgrey |= (priv.dccifd) && // have dcc interface and
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1466 (con.get_grey()); // want to use it for greylisting
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1467 priv.want_dccbulk |= (priv.dccifd) && // have dcc interface and
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1468 (con.get_bulk() != 0); // want to use it for bulk detection
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1469 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1470 if (st == white) {
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1471 priv.have_whites = true;
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1472 }
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1473 return SMFIS_CONTINUE;
94
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1474 }
e107ade3b1c0 fix dos line terminators
carl
parents: 92
diff changeset
1475
163
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1476 sfsistat mlfi_header(SMFICTX* ctx, char* headerf, char* headerv)
97d7da45fe2a spamassassin changes
carl
parents: 162
diff changeset
1477 {
192
8f4a9a37d4d9 delay autowhitelisting to avoid out of office reply bots
carl
parents: 191
diff changeset
1478 mlfiPriv &priv = *MLFIPRIV;
321
e172dc10fe24 add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 311
diff changeset
1479 priv.header_count++;
337
d68fda9be1c1 need to convert nl and tab to spaces in header values before regexec
Carl Byington <carl@five-ten-sg.com>
parents: 335
diff changeset
1480 char *value = headerv;
d68fda9be1c1 need to convert nl and tab to spaces in header values before regexec
Carl Byington <carl@five-ten-sg.com>
parents: 335
diff changeset
1481 if ((priv.header_count < 4) || (strcasecmp(headerf, "from") == 0)) {
d68fda9be1c1 need to convert nl and tab to spaces in header values before regexec
Carl Byington <carl@five-ten-sg.com>
parents: 335
diff changeset
1482 for (size_t i=0; i<strlen(value); i++) {
d68fda9be1c1 need to convert nl and tab to spaces in header values before regexec
Carl Byington <carl@five-ten-sg.com>
parents: 335
diff changeset
1483 if (value[i] < 0x20) value[i] = ' ';
d68fda9be1c1 need to convert nl and tab to spaces in header values before regexec
Carl Byington <carl@five-ten-sg.com>
parents: 335
diff changeset
1484 }
d68fda9be1c1 need to convert nl and tab to spaces in header values before regexec
Carl Byington <carl@five-ten-sg.com>
parents: 335
diff changeset
1485 }
d68fda9be1c1 need to convert nl and tab to spaces in header values before regexec
Carl Byington <carl@five-ten-sg.com>
parents: 335
diff changeset
1486
322
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1487 if (priv.dkim_ok) {
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1488 if ((priv.header_count == 1) && (strcasecmp(headerf, "DKIM-Filter") != 0)) priv.dkim_ok = false;
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1489 if (priv.header_count == 2) {
350
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
1490 if ((strcasecmp(headerf, "Authentication-Results") == 0) &&
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
1491 (strncasecmp(headerv, token_myhostname, strlen(token_myhostname)) == 0)) {
322
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1492 const int nmatch = 2;
9f8411f3919c add dkim white/black listing
Carl Byington <carl@five-ten-sg.com>
parents: 321
diff changeset
1493 regmatch_t match[nmatch];
326
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
1494 while (true) {
350
f4ca91f49cb6 send the original mail from address to the verify server, not the srs/pvrs unwrapped version; recognize our own dkim signatures
Carl Byington <carl@five-ten-sg.com>
parents: 348
diff changeset
1495 if (0 == regexec(&dkim_r_pattern, value, nmatch, match, 0)) {
326
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
1496 int s1 = match[1].rm_so; // domain
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
1497 int e1 = match[1].rm_eo;
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
1498 if (s1 != -1) {
337
d68fda9be1c1 need to convert nl and tab to spaces in header values before regexec
Carl Byington <carl@five-ten-sg.com>
parents: 335
diff changeset
1499 char save = value[e1];
d68fda9be1c1 need to convert nl and tab to spaces in header values before regexec
Carl Byington <carl@five-ten-sg.com>
parents: 335
diff changeset
1500 value[e1] = '\0';
d68fda9be1c1 need to convert nl and tab to spaces in header values before regexec
Carl Byington <carl@five-ten-sg.com>
parents: 335
diff changeset
1501 priv.dkim_signers.insert(strdup(value+s1));
d68fda9be1c1 need to convert nl and tab to spaces in header values before regexec
Carl Byington <carl@five-ten-sg.com>
parents: 335
diff changeset
1502 value[e1] = save;
d68fda9be1c1 need to convert nl and tab to spaces in header values before regexec
Carl Byington <carl@five-ten-sg.com>
parents: 335
diff changeset
1503 value += e1 + 1;
326
5e4b5540c8cc allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 325
diff changeset
1504 }
327
51846836ec92 allow multiple dkim signers in authentication results
Carl Byington <carl@five-ten-sg.com>
parents: 326
diff changeset
1505 else break;