annotate src/dnsbl.cpp @ 18:041ea016b684

add scanning for bare hostnames
author carl
date Fri, 30 Apr 2004 00:32:44 -0700
parents 2ae8d953f1d0
children c21b888cc175
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1 /*
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2
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3 Copyright (c) 2004 Carl Byington - 510 Software Group, released under
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4 the GPL version 2 or any later version at your choice available at
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5 http://www.fsf.org/licenses/gpl.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 -p port The port through which the MTA will connect to this milter.
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11 -t sec The timeout value.
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12 -c Check the config, and print a copy to stdout. Don't start the
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13 milter or do anything with the socket.
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14 -d Add debug syslog entries
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15
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17 TODO:
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18 1) Add config for max_recipients for each mail domain. Recipients in
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19 excess of that limit will be rejected, and the entire data will be
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20 rejected if it is sent.
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21
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22 2) Add config for poison addresses. If any recipient is poison, all
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23 recipients are rejected even if they would be whitelisted, and the
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24 data is rejected if sent.
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25
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26 */
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27
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28
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29 // from sendmail sample
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30 #include <sys/types.h>
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31 #include <sys/stat.h>
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32 #include <errno.h>
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33 #include <sysexits.h>
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34 #include <unistd.h>
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35
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36 // needed for socket io
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37 #include <sys/ioctl.h>
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38 #include <net/if.h>
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39 #include <arpa/inet.h>
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40 #include <netinet/in.h>
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41 #include <netinet/tcp.h>
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42 #include <netdb.h>
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43 #include <sys/socket.h>
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44
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45 // needed for thread
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46 #include <pthread.h>
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47
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48 // needed for std c++ collections
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49 #include <set>
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50 #include <map>
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51 #include <list>
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52
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53 // for the dns resolver
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54 #include <netinet/in.h>
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55 #include <arpa/nameser.h>
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56 #include <resolv.h>
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57
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58 // misc stuff needed here
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59 #include <ctype.h>
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60 #include <fstream>
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61 #include <syslog.h>
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62
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63 static char* dnsbl_version="$Id$";
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64
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65 #define DEFAULT "default"
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66 #define WHITE "white"
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67 #define BLACK "black"
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68 #define OK "ok"
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69 #define MANY "many"
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70
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71 enum status {oksofar, // not rejected yet
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72 white, // whitelisted by envelope from
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73 black, // blacklisted by envelope from or to
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74 reject}; // rejected by a dns list
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bd0b1a153f67 no message
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75
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76 using namespace std;
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77
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78 extern "C" {
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79 #include "libmilter/mfapi.h"
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80 sfsistat mlfi_connect(SMFICTX *ctx, char *hostname, _SOCK_ADDR *hostaddr);
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81 sfsistat mlfi_envfrom(SMFICTX *ctx, char **argv);
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82 sfsistat mlfi_envrcpt(SMFICTX *ctx, char **argv);
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83 sfsistat mlfi_body(SMFICTX *ctx, u_char *data, size_t len);
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84 sfsistat mlfi_eom(SMFICTX *ctx);
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85 sfsistat mlfi_abort(SMFICTX *ctx);
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86 sfsistat mlfi_close(SMFICTX *ctx);
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87 }
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88
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89 struct ltstr {
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90 bool operator()(char* s1, char* s2) const {
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91 return strcmp(s1, s2) < 0;
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92 }
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93 };
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94
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95 struct DNSBL {
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96 char *suffix; // blacklist suffix like blackholes.five-ten-sg.com
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97 char *message; // error message with one or two %s operators for the ip address replacement
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98 DNSBL(char *s, char *m);
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99 };
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100 DNSBL::DNSBL(char *s, char *m) {
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101 suffix = s;
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102 message = m;
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103 }
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104
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105 typedef DNSBL * DNSBLP;
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106 typedef list<DNSBLP> DNSBLL;
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107 typedef DNSBLL * DNSBLLP;
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108 typedef map<char *, char *, ltstr> string_map;
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109 typedef map<char *, string_map *, ltstr> from_map;
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110 typedef map<char *, DNSBLP, ltstr> dnsblp_map;
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111 typedef map<char *, DNSBLLP, ltstr> dnsbllp_map;
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112 typedef set<char *, ltstr> string_set;
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113 typedef list<char *> string_list;
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114
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115 struct CONFIG {
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116 // the only mutable stuff once it has been loaded from the config file
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117 int reference_count; // protected by the global config_mutex
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118 // all the rest is constant after loading from the config file
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119 time_t load_time;
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120 string_list config_files;
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121 dnsblp_map dnsbls;
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122 dnsbllp_map dnsblls;
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123 from_map env_from;
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124 string_map env_to_dnsbll; // map recipient to a named dnsbll
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125 string_map env_to_chkfrom; // map recipient to a named from map
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126 char * content_suffix; // for sbl url body filtering
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127 char * content_message; // ""
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128 CONFIG();
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129 ~CONFIG();
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130 };
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131 CONFIG::CONFIG() {
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132 reference_count = 0;
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133 load_time = 0;
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134 content_suffix = NULL;
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135 content_message = NULL;
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136 }
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137 CONFIG::~CONFIG() {
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138 for (dnsblp_map::iterator i=dnsbls.begin(); i!=dnsbls.end(); i++) {
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139 DNSBLP d = (*i).second;
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140 delete d;
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141 }
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142 for (dnsbllp_map::iterator i=dnsblls.begin(); i!=dnsblls.end(); i++) {
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143 DNSBLLP d = (*i).second;
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144 delete d;
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145 }
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146 for (from_map::iterator i=env_from.begin(); i!=env_from.end(); i++) {
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147 string_map *d = (*i).second;
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148 delete d;
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149 }
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150 }
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151
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152 static bool debug_syslog = false;
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153 static bool loader_run = true; // used to stop the config loader thread
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154 static string_set all_strings; // owns all the strings, only modified by the config loader thread
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155 static CONFIG * config = NULL; // protected by the config_mutex
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156
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157 static pthread_mutex_t config_mutex;
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158 static pthread_mutex_t syslog_mutex;
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159 static pthread_mutex_t resolve_mutex;
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160
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161
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162 ////////////////////////////////////////////////
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163 // helper to discard the strings held by a string_set
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164 //
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165 static void discard(string_set &s);
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166 static void discard(string_set &s) {
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167 for (string_set::iterator i=s.begin(); i!=s.end(); i++) {
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168 free(*i);
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169 }
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170 s.clear();
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171 }
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172
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173 ////////////////////////////////////////////////
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174 // helper to register a string in a string set
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175 //
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176 static char* register_string(string_set &s, char *name);
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177 static char* register_string(string_set &s, char *name) {
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178 string_set::iterator i = s.find(name);
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179 if (i != s.end()) return *i;
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180 char *x = strdup(name);
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181 s.insert(x);
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182 return x;
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183 }
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184
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185 ////////////////////////////////////////////////
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186 // syslog a message
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187 //
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188 static void my_syslog(char *text);
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189 static void my_syslog(char *text) {
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190 pthread_mutex_lock(&syslog_mutex);
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191 openlog("dnsbl", LOG_PID, LOG_MAIL);
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192 syslog(LOG_NOTICE, "%s", text);
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193 closelog();
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194 pthread_mutex_unlock(&syslog_mutex);
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195 }
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196
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197
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198 // include the content scanner
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199 #include "scanner.cpp"
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200
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201
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202 ////////////////////////////////////////////////
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203 // mail filter private data, held for us by sendmail
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204 //
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205 struct mlfiPriv
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206 {
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207 // connection specific data
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208 CONFIG *pc; // global context with our maps
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209 int ip; // ip4 address of the smtp client
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210 map<DNSBLP, status> checked; // status from those lists
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211 // message specific data
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212 char *mailaddr; // envelope from value
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213 bool authenticated; // client authenticated? if so, suppress all dnsbl checks
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214 bool have_whites; // have at least one whitelisted recipient? need to accept content and remove all non-whitelisted recipients if it fails
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215 bool only_whites; // every recipient is whitelisted?
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216 url_scanner *scanner; // object to handle body scanning
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217 string_set non_whites; // remember the non-whitelisted recipients so we can remove them if need be
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218 string_set hosts; // remember the hosts that we have checked
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219 mlfiPriv();
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220 ~mlfiPriv();
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221 void reset(bool final = false); // for a new message
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222 };
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223 mlfiPriv::mlfiPriv() {
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224 pthread_mutex_lock(&config_mutex);
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225 pc = config;
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226 pc->reference_count++;
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227 pthread_mutex_unlock(&config_mutex);
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228 ip = 0;
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229 mailaddr = NULL;
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230 authenticated = false;
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231 have_whites = false;
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232 only_whites = true;
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233 scanner = new url_scanner(&hosts);
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234 }
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235 mlfiPriv::~mlfiPriv() {
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236 pthread_mutex_lock(&config_mutex);
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237 pc->reference_count--;
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238 pthread_mutex_unlock(&config_mutex);
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239 reset(true);
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240 }
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241 void mlfiPriv::reset(bool final) {
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242 if (mailaddr) free(mailaddr);
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243 delete scanner;
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244 discard(non_whites);
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245 discard(hosts);
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246 if (!final) {
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247 mailaddr = NULL;
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248 authenticated = false;
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249 have_whites = false;
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250 only_whites = true;
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251 scanner = new url_scanner(&hosts);
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252 }
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253 }
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254
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255 #define MLFIPRIV ((struct mlfiPriv *) smfi_getpriv(ctx))
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256
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257
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258 ////////////////////////////////////////////////
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259 // register a global string
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260 //
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261 static char* register_string(char *name);
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262 static char* register_string(char *name) {
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263 return register_string(all_strings, name);
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264 }
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265
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266
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267 static char* next_token(char *delim);
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268 static char* next_token(char *delim) {
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269 char *name = strtok(NULL, delim);
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270 if (!name) return name;
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271 return register_string(name);
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272 }
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273
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274
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275 ////////////////////////////////////////////////
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276 // lookup an email address in the env_from or env_to maps
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277 //
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278 static char* lookup1(char *email, string_map map);
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279 static char* lookup1(char *email, string_map map) {
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280 string_map::iterator i = map.find(email);
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281 if (i != map.end()) return (*i).second;
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282 char *x = strchr(email, '@');
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283 if (!x) return DEFAULT;
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284 x++;
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285 i = map.find(x);
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286 if (i != map.end()) return (*i).second;
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287 return DEFAULT;
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288 }
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289
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290
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291 ////////////////////////////////////////////////
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292 // lookup an email address in the env_from or env_to maps
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293 // this email address is passed in from sendmail, and will
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294 // always be enclosed in <>. It may have mixed case, just
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295 // as the mail client sent it.
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296 //
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297 static char* lookup(char* email, string_map map);
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298 static char* lookup(char* email, string_map map) {
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299 int n = strlen(email)-2;
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300 if (n < 1) return DEFAULT; // malformed
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301 char *key = strdup(email+1);
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302 key[n] = '\0';
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303 for (int i=0; i<n; i++) key[i] = tolower(key[i]);
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304 char *rc = lookup1(key, map);
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305 free(key);
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306 return rc;
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307 }
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308
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309
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310 ////////////////////////////////////////////////
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311 // find the dnsbl with a specific name
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312 //
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313 static DNSBLP find_dnsbl(CONFIG &dc, char *name);
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314 static DNSBLP find_dnsbl(CONFIG &dc, char *name) {
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315 dnsblp_map::iterator i = dc.dnsbls.find(name);
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316 if (i == dc.dnsbls.end()) return NULL;
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317 return (*i).second;
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318 }
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319
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320
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321 ////////////////////////////////////////////////
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322 // find the dnsbll with a specific name
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323 //
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324 static DNSBLLP find_dnsbll(CONFIG &dc, char *name);
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325 static DNSBLLP find_dnsbll(CONFIG &dc, char *name) {
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326 dnsbllp_map::iterator i = dc.dnsblls.find(name);
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327 if (i == dc.dnsblls.end()) return NULL;
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328 return (*i).second;
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329 }
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330
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331
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332 ////////////////////////////////////////////////
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333 // find the envfrom map with a specific name
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334 //
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335 static string_map* find_from_map(CONFIG &dc, char *name);
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336 static string_map* find_from_map(CONFIG &dc, char *name) {
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337 from_map::iterator i = dc.env_from.find(name);
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338 if (i == dc.env_from.end()) return NULL;
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339 return (*i).second;
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340 }
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341
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342
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343 static string_map& really_find_from_map(CONFIG &dc, char *name);
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344 static string_map& really_find_from_map(CONFIG &dc, char *name) {
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345 string_map *sm = find_from_map(dc, name);
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346 if (!sm) {
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347 sm = new string_map;
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348 dc.env_from[name] = sm;
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349 }
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350 return *sm;
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351 }
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352
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353
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354 ////////////////////////////////////////////////
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355 //
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356 // ask a dns question and get an A record answer - we don't try
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357 // very hard, just using the default resolver retry settings.
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358 // If we cannot get an answer, we just accept the mail. The
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359 // caller must ensure thread safety.
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360 //
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361 //
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362 static int dns_interface(char *question);
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363 static int dns_interface(char *question) {
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364 #ifdef NS_PACKETSZ
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365 u_char answer[NS_PACKETSZ];
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366 int length = res_search(question, ns_c_in, ns_t_a, answer, sizeof(answer));
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367 if (length < 0) return 0; // error in getting answer
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368 // parse the answer
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369 ns_msg handle;
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370 ns_rr rr;
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371 if (ns_initparse(answer, length, &handle) != 0) return 0;
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372 int rrnum = 0;
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373 while (ns_parserr(&handle, ns_s_an, rrnum++, &rr) == 0) {
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374 if (ns_rr_type(rr) == ns_t_a) {
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375 int address;
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376 memcpy(&address, ns_rr_rdata(rr), sizeof(address));
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377 return address;
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378 }
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379 }
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380 return 0;
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381 #else
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382 struct hostent *host = gethostbyname(question);
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383 if (!host) return 0;
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384 if (host->h_addrtype != AF_INET) return 0;
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385 int address;
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386 memcpy(&address, host->h_addr, sizeof(address));
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387 return address;
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388 #endif
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389 }
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390
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391 static int protected_dns_interface(char *question);
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392 static int protected_dns_interface(char *question) {
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393 int ans;
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394 pthread_mutex_lock(&resolve_mutex);
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395 ans = dns_interface(question);
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396 pthread_mutex_unlock(&resolve_mutex);
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397 return ans;
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398
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399 }
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400
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401 ////////////////////////////////////////////////
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402 // check a single dnsbl
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403 //
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404 static status check_single(int ip, char *suffix);
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405 static status check_single(int ip, char *suffix) {
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406 // make a dns question
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407 const u_char *src = (const u_char *)&ip;
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408 if (src[0] == 127) return oksofar; // don't do dns lookups on localhost
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409 #ifdef NS_MAXDNAME
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410 char question[NS_MAXDNAME];
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411 #else
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412 char question[1000];
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413 #endif
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414 snprintf(question, sizeof(question), "%u.%u.%u.%u.%s.", src[3], src[2], src[1], src[0], suffix);
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415 // ask the question, if we get an A record it implies a blacklisted ip address
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416 return (protected_dns_interface(question)) ? reject : oksofar;
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417 }
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418
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419
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420 ////////////////////////////////////////////////
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421 // check a single dnsbl
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422 //
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423 static status check_single(int ip, DNSBL &bl);
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424 static status check_single(int ip, DNSBL &bl) {
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425 return check_single(ip, bl.suffix);
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426 }
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427
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428
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429 ////////////////////////////////////////////////
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430 // check the dnsbls specified for this recipient
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431 //
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432 static status check_dnsbl(mlfiPriv &priv, DNSBLLP dnsbllp, DNSBLP &rejectlist);
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433 static status check_dnsbl(mlfiPriv &priv, DNSBLLP dnsbllp, DNSBLP &rejectlist) {
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434 if (priv.authenticated) return oksofar;
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435 if (!dnsbllp) return oksofar;
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436 DNSBLL &dnsbll = *dnsbllp;
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437 for (DNSBLL::iterator i=dnsbll.begin(); i!=dnsbll.end(); i++) {
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438 DNSBLP dp = *i; // non null by construction
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439 status st;
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440 map<DNSBLP, status>::iterator f = priv.checked.find(dp);
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carl
parents:
diff changeset
441 if (f == priv.checked.end()) {
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carl
parents:
diff changeset
442 // have not checked this list yet
8
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parents: 5
diff changeset
443 st = check_single(priv.ip, *dp);
0
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parents:
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444 rejectlist = dp;
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carl
parents:
diff changeset
445 priv.checked[dp] = st;
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carl
parents:
diff changeset
446 }
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carl
parents:
diff changeset
447 else {
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carl
parents:
diff changeset
448 st = (*f).second;
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carl
parents:
diff changeset
449 rejectlist = (*f).first;
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carl
parents:
diff changeset
450 }
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carl
parents:
diff changeset
451 if (st == reject) return st;
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carl
parents:
diff changeset
452 }
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carl
parents:
diff changeset
453 return oksofar;
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carl
parents:
diff changeset
454 }
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carl
parents:
diff changeset
455
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carl
parents:
diff changeset
456
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carl
parents:
diff changeset
457 ////////////////////////////////////////////////
8
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parents: 5
diff changeset
458 // check the dnsbls specified for this recipient
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carl
parents: 5
diff changeset
459 //
16
2ae8d953f1d0 add scanning for bare hostnames
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parents: 14
diff changeset
460 static status check_hosts(mlfiPriv &priv, char *&host, int &ip);
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parents: 14
diff changeset
461 static status check_hosts(mlfiPriv &priv, char *&host, int &ip) {
8
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parents: 5
diff changeset
462 CONFIG &dc = *priv.pc;
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carl
parents: 5
diff changeset
463 if (!dc.content_suffix) return oksofar;
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parents: 5
diff changeset
464 int count = 0;
12
6ac6d6b822ce fix memory leak with duplicate url host names,
carl
parents: 11
diff changeset
465 for (string_set::iterator i=priv.hosts.begin(); i!=priv.hosts.end(); i++) {
8
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carl
parents: 5
diff changeset
466 count++;
12
6ac6d6b822ce fix memory leak with duplicate url host names,
carl
parents: 11
diff changeset
467 if (count > 20) return oksofar; // silly to check too many hosts
16
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
468 host = *i;
2ae8d953f1d0 add scanning for bare hostnames
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parents: 14
diff changeset
469 if (debug_syslog) {
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
470 char buf[200];
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
471 snprintf(buf, sizeof(buf), "looking for host %s", host);
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
472 my_syslog(buf);
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carl
parents: 14
diff changeset
473 }
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carl
parents: 14
diff changeset
474 ip = protected_dns_interface(host);
8
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carl
parents: 5
diff changeset
475 if (ip) {
16
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
476 if (debug_syslog) {
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carl
parents: 14
diff changeset
477 char adr[sizeof "255.255.255.255"];
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carl
parents: 14
diff changeset
478 adr[0] = '\0';
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carl
parents: 14
diff changeset
479 inet_ntop(AF_INET, (const u_char *)&ip, adr, sizeof(adr));
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
480 char buf[200];
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
481 snprintf(buf, sizeof(buf), "found host %s at %s", host, adr);
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
482 my_syslog(buf);
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carl
parents: 14
diff changeset
483 }
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
484 status st = check_single(ip, dc.content_suffix);
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carl
parents: 5
diff changeset
485 if (st == reject) return st;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
486 }
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
487 }
9
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
488 return oksofar;
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
489 }
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carl
parents: 5
diff changeset
490
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
491
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
492 ////////////////////////////////////////////////
0
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carl
parents:
diff changeset
493 // start of sendmail milter interfaces
96a9758165cd Initial revision
carl
parents:
diff changeset
494 //
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carl
parents:
diff changeset
495 sfsistat mlfi_connect(SMFICTX *ctx, char *hostname, _SOCK_ADDR *hostaddr)
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carl
parents:
diff changeset
496 {
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carl
parents:
diff changeset
497 // allocate some private memory
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carl
parents:
diff changeset
498 mlfiPriv *priv = new mlfiPriv;
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carl
parents:
diff changeset
499 if (hostaddr->sa_family == AF_INET) {
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carl
parents:
diff changeset
500 priv->ip = ((struct sockaddr_in *)hostaddr)->sin_addr.s_addr;
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carl
parents:
diff changeset
501 }
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carl
parents:
diff changeset
502
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carl
parents:
diff changeset
503 // save the private data
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carl
parents:
diff changeset
504 smfi_setpriv(ctx, (void*)priv);
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carl
parents:
diff changeset
505
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carl
parents:
diff changeset
506 // continue processing
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carl
parents:
diff changeset
507 return SMFIS_CONTINUE;
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carl
parents:
diff changeset
508 }
96a9758165cd Initial revision
carl
parents:
diff changeset
509
96a9758165cd Initial revision
carl
parents:
diff changeset
510 sfsistat mlfi_envfrom(SMFICTX *ctx, char **from)
96a9758165cd Initial revision
carl
parents:
diff changeset
511 {
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carl
parents:
diff changeset
512 mlfiPriv &priv = *MLFIPRIV;
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carl
parents:
diff changeset
513 priv.mailaddr = strdup(from[0]);
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carl
parents:
diff changeset
514 priv.authenticated = (smfi_getsymval(ctx, "{auth_authen}") != NULL);
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carl
parents:
diff changeset
515 return SMFIS_CONTINUE;
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carl
parents:
diff changeset
516 }
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carl
parents:
diff changeset
517
96a9758165cd Initial revision
carl
parents:
diff changeset
518 sfsistat mlfi_envrcpt(SMFICTX *ctx, char **rcpt)
96a9758165cd Initial revision
carl
parents:
diff changeset
519 {
96a9758165cd Initial revision
carl
parents:
diff changeset
520 DNSBLP rejectlist = NULL; // list that caused the reject
96a9758165cd Initial revision
carl
parents:
diff changeset
521 status st = oksofar;
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carl
parents:
diff changeset
522 mlfiPriv &priv = *MLFIPRIV;
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carl
parents:
diff changeset
523 CONFIG &dc = *priv.pc;
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carl
parents:
diff changeset
524 char *rcptaddr = rcpt[0];
96a9758165cd Initial revision
carl
parents:
diff changeset
525 char *dnsname = lookup(rcptaddr, dc.env_to_dnsbll);
96a9758165cd Initial revision
carl
parents:
diff changeset
526 char *fromname = lookup(rcptaddr, dc.env_to_chkfrom);
96a9758165cd Initial revision
carl
parents:
diff changeset
527 if ((strcmp(dnsname, BLACK) == 0) ||
96a9758165cd Initial revision
carl
parents:
diff changeset
528 (strcmp(fromname, BLACK) == 0)) {
96a9758165cd Initial revision
carl
parents:
diff changeset
529 st = black; // two options to blacklist this recipient
96a9758165cd Initial revision
carl
parents:
diff changeset
530 }
96a9758165cd Initial revision
carl
parents:
diff changeset
531 else if (strcmp(fromname, WHITE) == 0) {
96a9758165cd Initial revision
carl
parents:
diff changeset
532 st = white;
96a9758165cd Initial revision
carl
parents:
diff changeset
533 }
96a9758165cd Initial revision
carl
parents:
diff changeset
534 else {
96a9758165cd Initial revision
carl
parents:
diff changeset
535 // check an env_from map
96a9758165cd Initial revision
carl
parents:
diff changeset
536 string_map *sm = find_from_map(dc, fromname);
96a9758165cd Initial revision
carl
parents:
diff changeset
537 if (sm != NULL) {
96a9758165cd Initial revision
carl
parents:
diff changeset
538 fromname = lookup(priv.mailaddr, *sm); // returns default if name not in map
96a9758165cd Initial revision
carl
parents:
diff changeset
539 if (strcmp(fromname, BLACK) == 0) {
96a9758165cd Initial revision
carl
parents:
diff changeset
540 st = black; // blacklist this envelope from value
96a9758165cd Initial revision
carl
parents:
diff changeset
541 }
96a9758165cd Initial revision
carl
parents:
diff changeset
542 if (strcmp(fromname, WHITE) == 0) {
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carl
parents:
diff changeset
543 st = white; // blacklist this envelope from value
96a9758165cd Initial revision
carl
parents:
diff changeset
544 }
96a9758165cd Initial revision
carl
parents:
diff changeset
545 }
96a9758165cd Initial revision
carl
parents:
diff changeset
546 }
96a9758165cd Initial revision
carl
parents:
diff changeset
547 if ((st == oksofar) && (strcmp(dnsname, WHITE) != 0)) {
96a9758165cd Initial revision
carl
parents:
diff changeset
548 // check dns lists
96a9758165cd Initial revision
carl
parents:
diff changeset
549 st = check_dnsbl(priv, find_dnsbll(dc, dnsname), rejectlist);
96a9758165cd Initial revision
carl
parents:
diff changeset
550 }
96a9758165cd Initial revision
carl
parents:
diff changeset
551
96a9758165cd Initial revision
carl
parents:
diff changeset
552 if (st == reject) {
96a9758165cd Initial revision
carl
parents:
diff changeset
553 // reject the recipient based on some dnsbl
96a9758165cd Initial revision
carl
parents:
diff changeset
554 char adr[sizeof "255.255.255.255"];
96a9758165cd Initial revision
carl
parents:
diff changeset
555 adr[0] = '\0';
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
556 inet_ntop(AF_INET, (const u_char *)&priv.ip, adr, sizeof(adr));
0
96a9758165cd Initial revision
carl
parents:
diff changeset
557 char buf[2000];
96a9758165cd Initial revision
carl
parents:
diff changeset
558 snprintf(buf, sizeof(buf), rejectlist->message, adr, adr);
96a9758165cd Initial revision
carl
parents:
diff changeset
559 smfi_setreply(ctx, "550", "5.7.1", buf);
96a9758165cd Initial revision
carl
parents:
diff changeset
560 return SMFIS_REJECT;
96a9758165cd Initial revision
carl
parents:
diff changeset
561 }
96a9758165cd Initial revision
carl
parents:
diff changeset
562 else if (st == black) {
96a9758165cd Initial revision
carl
parents:
diff changeset
563 // reject the recipient based on blacklisting either from or to
96a9758165cd Initial revision
carl
parents:
diff changeset
564 smfi_setreply(ctx, "550", "5.7.1", "no such user");
96a9758165cd Initial revision
carl
parents:
diff changeset
565 return SMFIS_REJECT;
96a9758165cd Initial revision
carl
parents:
diff changeset
566 }
96a9758165cd Initial revision
carl
parents:
diff changeset
567 else {
96a9758165cd Initial revision
carl
parents:
diff changeset
568 // accept the recipient
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
569 if (st == oksofar) {
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
570 // but remember the non-whites
12
6ac6d6b822ce fix memory leak with duplicate url host names,
carl
parents: 11
diff changeset
571 register_string(priv.non_whites, rcptaddr);
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
572 priv.only_whites = false;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
573 }
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
574 if (st == white) {
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
575 priv.have_whites = true;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
576 }
0
96a9758165cd Initial revision
carl
parents:
diff changeset
577 return SMFIS_CONTINUE;
96a9758165cd Initial revision
carl
parents:
diff changeset
578 }
96a9758165cd Initial revision
carl
parents:
diff changeset
579 }
96a9758165cd Initial revision
carl
parents:
diff changeset
580
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
581 sfsistat mlfi_body(SMFICTX *ctx, u_char *data, size_t len)
0
96a9758165cd Initial revision
carl
parents:
diff changeset
582 {
96a9758165cd Initial revision
carl
parents:
diff changeset
583 mlfiPriv &priv = *MLFIPRIV;
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
584 if (priv.authenticated) return SMFIS_CONTINUE;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
585 if (priv.only_whites) return SMFIS_CONTINUE;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
586 priv.scanner->scan(data, len);
11
2c206836b4cc integration work on url scanner
carl
parents: 9
diff changeset
587 return SMFIS_CONTINUE;
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
588 }
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
589
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
590 sfsistat mlfi_eom(SMFICTX *ctx)
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
591 {
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
592 sfsistat rc;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
593 mlfiPriv &priv = *MLFIPRIV;
16
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
594 char *host = NULL;
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
595 int ip;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
596 // process end of message
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
597 if (priv.authenticated ||
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
598 priv.only_whites ||
16
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
599 (check_hosts(priv, host, ip) == oksofar)) rc = SMFIS_CONTINUE;
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
600 else {
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
601 if (!priv.have_whites) {
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
602 // can reject the entire message
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
603 char adr[sizeof "255.255.255.255"];
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
604 adr[0] = '\0';
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
605 inet_ntop(AF_INET, (const u_char *)&ip, adr, sizeof(adr));
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
606 char buf[2000];
16
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
607 snprintf(buf, sizeof(buf), priv.pc->content_message, host, adr);
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
608 smfi_setreply(ctx, "550", "5.7.1", buf);
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
609 rc = SMFIS_REJECT;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
610 }
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
611 else {
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
612 // need to accept it but remove the recipients that don't want it
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
613 for (string_set::iterator i=priv.non_whites.begin(); i!=priv.non_whites.end(); i++) {
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
614 char *rcpt = *i;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
615 smfi_delrcpt(ctx, rcpt);
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
616 }
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
617 rc = SMFIS_CONTINUE;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
618 }
0
96a9758165cd Initial revision
carl
parents:
diff changeset
619 }
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
620 // reset for a new message on the same connection
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
621 mlfi_abort(ctx);
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
622 return rc;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
623 }
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
624
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
625 sfsistat mlfi_abort(SMFICTX *ctx)
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
626 {
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
627 mlfiPriv &priv = *MLFIPRIV;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
628 priv.reset();
0
96a9758165cd Initial revision
carl
parents:
diff changeset
629 return SMFIS_CONTINUE;
96a9758165cd Initial revision
carl
parents:
diff changeset
630 }
96a9758165cd Initial revision
carl
parents:
diff changeset
631
96a9758165cd Initial revision
carl
parents:
diff changeset
632 sfsistat mlfi_close(SMFICTX *ctx)
96a9758165cd Initial revision
carl
parents:
diff changeset
633 {
96a9758165cd Initial revision
carl
parents:
diff changeset
634 mlfiPriv *priv = MLFIPRIV;
96a9758165cd Initial revision
carl
parents:
diff changeset
635 if (!priv) return SMFIS_CONTINUE;
96a9758165cd Initial revision
carl
parents:
diff changeset
636 delete priv;
96a9758165cd Initial revision
carl
parents:
diff changeset
637 smfi_setpriv(ctx, NULL);
96a9758165cd Initial revision
carl
parents:
diff changeset
638 return SMFIS_CONTINUE;
96a9758165cd Initial revision
carl
parents:
diff changeset
639 }
96a9758165cd Initial revision
carl
parents:
diff changeset
640
96a9758165cd Initial revision
carl
parents:
diff changeset
641 struct smfiDesc smfilter =
96a9758165cd Initial revision
carl
parents:
diff changeset
642 {
96a9758165cd Initial revision
carl
parents:
diff changeset
643 "DNSBL", // filter name
96a9758165cd Initial revision
carl
parents:
diff changeset
644 SMFI_VERSION, // version code -- do not change
96a9758165cd Initial revision
carl
parents:
diff changeset
645 SMFIF_DELRCPT, // flags
96a9758165cd Initial revision
carl
parents:
diff changeset
646 mlfi_connect, // connection info filter
96a9758165cd Initial revision
carl
parents:
diff changeset
647 NULL, // SMTP HELO command filter
96a9758165cd Initial revision
carl
parents:
diff changeset
648 mlfi_envfrom, // envelope sender filter
96a9758165cd Initial revision
carl
parents:
diff changeset
649 mlfi_envrcpt, // envelope recipient filter
96a9758165cd Initial revision
carl
parents:
diff changeset
650 NULL, // header filter
96a9758165cd Initial revision
carl
parents:
diff changeset
651 NULL, // end of header
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
652 mlfi_body, // body block filter
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
653 mlfi_eom, // end of message
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
654 mlfi_abort, // message aborted
0
96a9758165cd Initial revision
carl
parents:
diff changeset
655 mlfi_close, // connection cleanup
96a9758165cd Initial revision
carl
parents:
diff changeset
656 };
96a9758165cd Initial revision
carl
parents:
diff changeset
657
96a9758165cd Initial revision
carl
parents:
diff changeset
658
96a9758165cd Initial revision
carl
parents:
diff changeset
659 static void dumpit(char *name, string_map map);
96a9758165cd Initial revision
carl
parents:
diff changeset
660 static void dumpit(char *name, string_map map) {
9
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
661 fprintf(stdout, "\n");
0
96a9758165cd Initial revision
carl
parents:
diff changeset
662 for (string_map::iterator i=map.begin(); i!=map.end(); i++) {
9
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
663 fprintf(stdout, "%s %s->%s\n", name, (*i).first, (*i).second);
0
96a9758165cd Initial revision
carl
parents:
diff changeset
664 }
96a9758165cd Initial revision
carl
parents:
diff changeset
665 }
96a9758165cd Initial revision
carl
parents:
diff changeset
666
96a9758165cd Initial revision
carl
parents:
diff changeset
667
96a9758165cd Initial revision
carl
parents:
diff changeset
668 static void dumpit(from_map map);
96a9758165cd Initial revision
carl
parents:
diff changeset
669 static void dumpit(from_map map) {
96a9758165cd Initial revision
carl
parents:
diff changeset
670 for (from_map::iterator i=map.begin(); i!=map.end(); i++) {
3
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
671 char buf[2000];
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
672 snprintf(buf, sizeof(buf), "envelope from map for %s", (*i).first);
0
96a9758165cd Initial revision
carl
parents:
diff changeset
673 string_map *sm = (*i).second;
3
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
674 dumpit(buf, *sm);
0
96a9758165cd Initial revision
carl
parents:
diff changeset
675 }
96a9758165cd Initial revision
carl
parents:
diff changeset
676 }
96a9758165cd Initial revision
carl
parents:
diff changeset
677
96a9758165cd Initial revision
carl
parents:
diff changeset
678
3
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
679 static void dumpit(CONFIG &dc);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
680 static void dumpit(CONFIG &dc) {
5
793ac9cc114d updates to use dcc conf files
carl
parents: 4
diff changeset
681 dumpit(dc.env_from);
793ac9cc114d updates to use dcc conf files
carl
parents: 4
diff changeset
682 dumpit("envelope to (dnsbl list)", dc.env_to_dnsbll);
793ac9cc114d updates to use dcc conf files
carl
parents: 4
diff changeset
683 dumpit("envelope to (from map)", dc.env_to_chkfrom);
9
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
684 fprintf(stdout, "\ndnsbls\n");
0
96a9758165cd Initial revision
carl
parents:
diff changeset
685 for (dnsblp_map::iterator i=dc.dnsbls.begin(); i!=dc.dnsbls.end(); i++) {
9
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
686 fprintf(stdout, "%s %s %s\n", (*i).first, (*i).second->suffix, (*i).second->message);
0
96a9758165cd Initial revision
carl
parents:
diff changeset
687 }
9
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
688 fprintf(stdout, "\ndnsbl_lists\n");
0
96a9758165cd Initial revision
carl
parents:
diff changeset
689 for (dnsbllp_map::iterator i=dc.dnsblls.begin(); i!=dc.dnsblls.end(); i++) {
96a9758165cd Initial revision
carl
parents:
diff changeset
690 char *name = (*i).first;
96a9758165cd Initial revision
carl
parents:
diff changeset
691 DNSBLL &dl = *((*i).second);
9
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
692 fprintf(stdout, "%s", name);
0
96a9758165cd Initial revision
carl
parents:
diff changeset
693 for (DNSBLL::iterator j=dl.begin(); j!=dl.end(); j++) {
96a9758165cd Initial revision
carl
parents:
diff changeset
694 DNSBL &d = **j;
9
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
695 fprintf(stdout, " %s", d.suffix);
0
96a9758165cd Initial revision
carl
parents:
diff changeset
696 }
9
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
697 fprintf(stdout, "\n");
0
96a9758165cd Initial revision
carl
parents:
diff changeset
698 }
9
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
699 if (dc.content_suffix) {
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
700 fprintf(stdout, "\ncontent filtering enabled with %s %s\n", dc.content_suffix, dc.content_message);
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
701 }
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
702 fprintf(stdout, "\nfiles\n");
3
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
703 for (string_list::iterator i=dc.config_files.begin(); i!=dc.config_files.end(); i++) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
704 char *f = *i;
9
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
705 fprintf(stdout, "config includes %s\n", f);
3
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
706 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
707 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
708
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
709
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
710 ////////////////////////////////////////////////
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
711 // check for redundant or recursive include files
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
712 //
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
713 static bool ok_to_include(CONFIG &dc, char *fn);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
714 static bool ok_to_include(CONFIG &dc, char *fn) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
715 if (!fn) return false;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
716 bool ok = true;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
717 for (string_list::iterator i=dc.config_files.begin(); i!=dc.config_files.end(); i++) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
718 char *f = *i;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
719 if (strcmp(f, fn) == 0) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
720 my_syslog("redundant or recursive include file detected");
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
721 ok = false;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
722 break;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
723 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
724 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
725 return ok;
0
96a9758165cd Initial revision
carl
parents:
diff changeset
726 }
96a9758165cd Initial revision
carl
parents:
diff changeset
727
96a9758165cd Initial revision
carl
parents:
diff changeset
728
96a9758165cd Initial revision
carl
parents:
diff changeset
729 ////////////////////////////////////////////////
96a9758165cd Initial revision
carl
parents:
diff changeset
730 // load a single config file
96a9758165cd Initial revision
carl
parents:
diff changeset
731 //
3
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
732 static void load_conf_dcc(CONFIG &dc, char *name, char *fn);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
733 static void load_conf_dcc(CONFIG &dc, char *name, char *fn) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
734 dc.config_files.push_back(fn);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
735 char *list = BLACK;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
736 const int LINE_SIZE = 2000;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
737 ifstream is(fn);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
738 if (is.fail()) return;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
739 char line[LINE_SIZE];
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
740 char *delim = " \t";
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
741 int curline = 0;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
742 while (!is.eof()) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
743 is.getline(line, LINE_SIZE);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
744 curline++;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
745 int n = strlen(line);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
746 if (!n) continue;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
747 for (int i=0; i<n; i++) line[i] = tolower(line[i]);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
748 if (line[0] == '#') continue;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
749 char *head = line;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
750 if (strspn(line, delim) == 0) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
751 // have a leading ok/many tag to fetch
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
752 char *cmd = strtok(line, delim);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
753 if (strcmp(cmd, MANY) == 0) list = BLACK;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
754 else if (strcmp(cmd, OK) == 0) list = WHITE;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
755 head = cmd + strlen(cmd) + 1;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
756 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
757 char *cmd = strtok(head, delim);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
758 if (!cmd) continue;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
759 if (strcmp(cmd, "env_from") == 0) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
760 char *from = next_token(delim);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
761 if (from) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
762 string_map &fm = really_find_from_map(dc, name);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
763 fm[from] = list;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
764 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
765 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
766 else if (strcmp(cmd, "env_to") == 0) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
767 char *to = next_token(delim);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
768 if (to) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
769 dc.env_to_dnsbll[to] = list;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
770 dc.env_to_chkfrom[to] = list;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
771 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
772 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
773 else if (strcmp(cmd, "substitute") == 0) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
774 char *tag = next_token(delim);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
775 if (tag && (strcmp(tag, "mail_host") == 0)) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
776 char *from = next_token(delim);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
777 if (from) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
778 string_map &fm = really_find_from_map(dc, name);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
779 fm[from] = list;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
780 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
781 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
782 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
783 else if (strcmp(cmd, "include") == 0) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
784 char *fn = next_token(delim);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
785 if (ok_to_include(dc, fn)) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
786 load_conf_dcc(dc, name, fn);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
787 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
788 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
789
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
790 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
791 is.close();
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
792 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
793
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
794
0
96a9758165cd Initial revision
carl
parents:
diff changeset
795 static void load_conf(CONFIG &dc, char *fn);
96a9758165cd Initial revision
carl
parents:
diff changeset
796 static void load_conf(CONFIG &dc, char *fn) {
96a9758165cd Initial revision
carl
parents:
diff changeset
797 dc.config_files.push_back(fn);
96a9758165cd Initial revision
carl
parents:
diff changeset
798 map<char*, int, ltstr> commands;
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
799 enum {dummy, content, dnsbl, dnsbll, envfrom, envto, include, includedcc};
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
800 commands["content" ] = content;
3
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
801 commands["dnsbl" ] = dnsbl;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
802 commands["dnsbl_list" ] = dnsbll;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
803 commands["env_from" ] = envfrom;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
804 commands["env_to" ] = envto;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
805 commands["include" ] = include;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
806 commands["include_dcc"] = includedcc;
0
96a9758165cd Initial revision
carl
parents:
diff changeset
807 const int LINE_SIZE = 2000;
96a9758165cd Initial revision
carl
parents:
diff changeset
808 ifstream is(fn);
96a9758165cd Initial revision
carl
parents:
diff changeset
809 if (is.fail()) return;
96a9758165cd Initial revision
carl
parents:
diff changeset
810 char line[LINE_SIZE];
96a9758165cd Initial revision
carl
parents:
diff changeset
811 char orig[LINE_SIZE];
96a9758165cd Initial revision
carl
parents:
diff changeset
812 char *delim = " \t";
96a9758165cd Initial revision
carl
parents:
diff changeset
813 int curline = 0;
96a9758165cd Initial revision
carl
parents:
diff changeset
814 while (!is.eof()) {
96a9758165cd Initial revision
carl
parents:
diff changeset
815 is.getline(line, LINE_SIZE);
96a9758165cd Initial revision
carl
parents:
diff changeset
816 snprintf(orig, sizeof(orig), "%s", line);
96a9758165cd Initial revision
carl
parents:
diff changeset
817 curline++;
96a9758165cd Initial revision
carl
parents:
diff changeset
818 int n = strlen(line);
96a9758165cd Initial revision
carl
parents:
diff changeset
819 for (int i=0; i<n; i++) line[i] = tolower(line[i]);
96a9758165cd Initial revision
carl
parents:
diff changeset
820 char *cmd = strtok(line, delim);
96a9758165cd Initial revision
carl
parents:
diff changeset
821 if (cmd && (cmd[0] != '#') && (cmd[0] != '\0')) {
96a9758165cd Initial revision
carl
parents:
diff changeset
822 // have a decent command
96a9758165cd Initial revision
carl
parents:
diff changeset
823 bool processed = false;
96a9758165cd Initial revision
carl
parents:
diff changeset
824 switch (commands[cmd]) {
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
825 case content: {
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
826 char *suff = strtok(NULL, delim);
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
827 if (!suff) break; // no dns suffic
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
828 char *msg = suff + strlen(suff);
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
829 if ((msg - line) >= strlen(orig)) break; // line ended with the dns suffix
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
830 msg = strchr(msg+1, '\'');
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
831 if (!msg) break; // no reply message template
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
832 msg++; // move over the leading '
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
833 if ((msg - line) >= strlen(orig)) break; // line ended with the leading quote
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
834 char *last = strchr(msg, '\'');
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
835 if (!last) break; // no trailing quote
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
836 *last = '\0'; // make it a null terminator
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
837 dc.content_suffix = register_string(suff);
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
838 dc.content_message = register_string(msg);
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
839 processed = true;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
840 } break;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
841
0
96a9758165cd Initial revision
carl
parents:
diff changeset
842 case dnsbl: {
96a9758165cd Initial revision
carl
parents:
diff changeset
843 // have a new dnsbl to use
96a9758165cd Initial revision
carl
parents:
diff changeset
844 char *name = next_token(delim);
96a9758165cd Initial revision
carl
parents:
diff changeset
845 if (!name) break; // no name name
96a9758165cd Initial revision
carl
parents:
diff changeset
846 if (find_dnsbl(dc, name)) break; // duplicate entry
96a9758165cd Initial revision
carl
parents:
diff changeset
847 char *suff = strtok(NULL, delim);
96a9758165cd Initial revision
carl
parents:
diff changeset
848 if (!suff) break; // no dns suffic
96a9758165cd Initial revision
carl
parents:
diff changeset
849 char *msg = suff + strlen(suff);
96a9758165cd Initial revision
carl
parents:
diff changeset
850 if ((msg - line) >= strlen(orig)) break; // line ended with the dns suffix
96a9758165cd Initial revision
carl
parents:
diff changeset
851 msg = strchr(msg+1, '\'');
96a9758165cd Initial revision
carl
parents:
diff changeset
852 if (!msg) break; // no reply message template
96a9758165cd Initial revision
carl
parents:
diff changeset
853 msg++; // move over the leading '
96a9758165cd Initial revision
carl
parents:
diff changeset
854 if ((msg - line) >= strlen(orig)) break; // line ended with the leading quote
96a9758165cd Initial revision
carl
parents:
diff changeset
855 char *last = strchr(msg, '\'');
96a9758165cd Initial revision
carl
parents:
diff changeset
856 if (!last) break; // no trailing quote
96a9758165cd Initial revision
carl
parents:
diff changeset
857 *last = '\0'; // make it a null terminator
96a9758165cd Initial revision
carl
parents:
diff changeset
858 dc.dnsbls[name] = new DNSBL(register_string(suff), register_string(msg));
96a9758165cd Initial revision
carl
parents:
diff changeset
859 processed = true;
96a9758165cd Initial revision
carl
parents:
diff changeset
860 } break;
96a9758165cd Initial revision
carl
parents:
diff changeset
861
96a9758165cd Initial revision
carl
parents:
diff changeset
862 case dnsbll: {
96a9758165cd Initial revision
carl
parents:
diff changeset
863 // define a new combination of dnsbls
96a9758165cd Initial revision
carl
parents:
diff changeset
864 char *name = next_token(delim);
96a9758165cd Initial revision
carl
parents:
diff changeset
865 if (!name) break;
96a9758165cd Initial revision
carl
parents:
diff changeset
866 if (find_dnsbll(dc, name)) break; // duplicate entry
96a9758165cd Initial revision
carl
parents:
diff changeset
867 char *list = next_token(delim);
96a9758165cd Initial revision
carl
parents:
diff changeset
868 if (!list || (*list == '\0') || (*list == '#')) break;
96a9758165cd Initial revision
carl
parents:
diff changeset
869 DNSBLLP d = new DNSBLL;
96a9758165cd Initial revision
carl
parents:
diff changeset
870 DNSBLP p = find_dnsbl(dc, list);
96a9758165cd Initial revision
carl
parents:
diff changeset
871 if (p) d->push_back(p);
96a9758165cd Initial revision
carl
parents:
diff changeset
872 while (true) {
96a9758165cd Initial revision
carl
parents:
diff changeset
873 list = next_token(delim);
96a9758165cd Initial revision
carl
parents:
diff changeset
874 if (!list || (*list == '\0') || (*list == '#')) break;
96a9758165cd Initial revision
carl
parents:
diff changeset
875 DNSBLP p = find_dnsbl(dc, list);
96a9758165cd Initial revision
carl
parents:
diff changeset
876 if (p) d->push_back(p);
96a9758165cd Initial revision
carl
parents:
diff changeset
877 }
96a9758165cd Initial revision
carl
parents:
diff changeset
878 dc.dnsblls[name] = d;
96a9758165cd Initial revision
carl
parents:
diff changeset
879 processed = true;
96a9758165cd Initial revision
carl
parents:
diff changeset
880 } break;
96a9758165cd Initial revision
carl
parents:
diff changeset
881
96a9758165cd Initial revision
carl
parents:
diff changeset
882 case envfrom: {
96a9758165cd Initial revision
carl
parents:
diff changeset
883 // add an entry into the named string_map
96a9758165cd Initial revision
carl
parents:
diff changeset
884 char *name = next_token(delim);
96a9758165cd Initial revision
carl
parents:
diff changeset
885 if (!name) break;
96a9758165cd Initial revision
carl
parents:
diff changeset
886 char *from = next_token(delim);
96a9758165cd Initial revision
carl
parents:
diff changeset
887 if (!from) break;
96a9758165cd Initial revision
carl
parents:
diff changeset
888 char *list = next_token(delim);
96a9758165cd Initial revision
carl
parents:
diff changeset
889 if (!list) break;
96a9758165cd Initial revision
carl
parents:
diff changeset
890 if ((strcmp(list, WHITE) == 0) ||
96a9758165cd Initial revision
carl
parents:
diff changeset
891 (strcmp(list, BLACK) == 0)) {
96a9758165cd Initial revision
carl
parents:
diff changeset
892 string_map &fm = really_find_from_map(dc, name);
96a9758165cd Initial revision
carl
parents:
diff changeset
893 fm[from] = list;
96a9758165cd Initial revision
carl
parents:
diff changeset
894 processed = true;
96a9758165cd Initial revision
carl
parents:
diff changeset
895 }
96a9758165cd Initial revision
carl
parents:
diff changeset
896 else {
96a9758165cd Initial revision
carl
parents:
diff changeset
897 // list may be the name of a previously defined from_map
96a9758165cd Initial revision
carl
parents:
diff changeset
898 string_map *m = find_from_map(dc, list);
96a9758165cd Initial revision
carl
parents:
diff changeset
899 if (m && (strcmp(list,name) != 0)) {
96a9758165cd Initial revision
carl
parents:
diff changeset
900 string_map &pm = *m;
96a9758165cd Initial revision
carl
parents:
diff changeset
901 string_map &fm = really_find_from_map(dc, name);
96a9758165cd Initial revision
carl
parents:
diff changeset
902 fm.insert(pm.begin(), pm.end());
96a9758165cd Initial revision
carl
parents:
diff changeset
903 processed = true;
96a9758165cd Initial revision
carl
parents:
diff changeset
904 }
96a9758165cd Initial revision
carl
parents:
diff changeset
905 }
96a9758165cd Initial revision
carl
parents:
diff changeset
906 } break;
96a9758165cd Initial revision
carl
parents:
diff changeset
907
96a9758165cd Initial revision
carl
parents:
diff changeset
908 case envto: {
96a9758165cd Initial revision
carl
parents:
diff changeset
909 // define the dnsbl_list and env_from maps to use for this recipient
96a9758165cd Initial revision
carl
parents:
diff changeset
910 char *to = next_token(delim);
96a9758165cd Initial revision
carl
parents:
diff changeset
911 if (!to) break;
96a9758165cd Initial revision
carl
parents:
diff changeset
912 char *list = next_token(delim);
96a9758165cd Initial revision
carl
parents:
diff changeset
913 if (!list) break;
96a9758165cd Initial revision
carl
parents:
diff changeset
914 char *from = next_token(delim);
96a9758165cd Initial revision
carl
parents:
diff changeset
915 if (!from) break;
96a9758165cd Initial revision
carl
parents:
diff changeset
916 dc.env_to_dnsbll[to] = list;
96a9758165cd Initial revision
carl
parents:
diff changeset
917 dc.env_to_chkfrom[to] = from;
96a9758165cd Initial revision
carl
parents:
diff changeset
918 processed = true;
96a9758165cd Initial revision
carl
parents:
diff changeset
919 } break;
96a9758165cd Initial revision
carl
parents:
diff changeset
920
96a9758165cd Initial revision
carl
parents:
diff changeset
921 case include: {
96a9758165cd Initial revision
carl
parents:
diff changeset
922 char *fn = next_token(delim);
3
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
923 if (ok_to_include(dc, fn)) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
924 load_conf(dc, fn);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
925 processed = true;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
926 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
927 } break;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
928
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
929 case includedcc: {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
930 char *name = next_token(delim);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
931 if (!name) break;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
932 char *fn = next_token(delim);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
933 if (ok_to_include(dc, fn)) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
934 load_conf_dcc(dc, name, fn);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
935 processed = true;
0
96a9758165cd Initial revision
carl
parents:
diff changeset
936 }
96a9758165cd Initial revision
carl
parents:
diff changeset
937 } break;
96a9758165cd Initial revision
carl
parents:
diff changeset
938
96a9758165cd Initial revision
carl
parents:
diff changeset
939 default: {
96a9758165cd Initial revision
carl
parents:
diff changeset
940 } break;
96a9758165cd Initial revision
carl
parents:
diff changeset
941 }
96a9758165cd Initial revision
carl
parents:
diff changeset
942 if (!processed) {
96a9758165cd Initial revision
carl
parents:
diff changeset
943 pthread_mutex_lock(&syslog_mutex);
96a9758165cd Initial revision
carl
parents:
diff changeset
944 openlog("dnsbl", LOG_PID, LOG_MAIL);
96a9758165cd Initial revision
carl
parents:
diff changeset
945 syslog(LOG_ERR, "ignoring file %s line %d : %s\n", fn, curline, orig);
96a9758165cd Initial revision
carl
parents:
diff changeset
946 closelog();
96a9758165cd Initial revision
carl
parents:
diff changeset
947 pthread_mutex_unlock(&syslog_mutex);
96a9758165cd Initial revision
carl
parents:
diff changeset
948 }
96a9758165cd Initial revision
carl
parents:
diff changeset
949 }
96a9758165cd Initial revision
carl
parents:
diff changeset
950 }
96a9758165cd Initial revision
carl
parents:
diff changeset
951 is.close();
96a9758165cd Initial revision
carl
parents:
diff changeset
952 }
96a9758165cd Initial revision
carl
parents:
diff changeset
953
96a9758165cd Initial revision
carl
parents:
diff changeset
954
96a9758165cd Initial revision
carl
parents:
diff changeset
955 ////////////////////////////////////////////////
96a9758165cd Initial revision
carl
parents:
diff changeset
956 // reload the config
96a9758165cd Initial revision
carl
parents:
diff changeset
957 //
96a9758165cd Initial revision
carl
parents:
diff changeset
958 static CONFIG* new_conf();
96a9758165cd Initial revision
carl
parents:
diff changeset
959 static CONFIG* new_conf() {
96a9758165cd Initial revision
carl
parents:
diff changeset
960 my_syslog("loading new configuration");
96a9758165cd Initial revision
carl
parents:
diff changeset
961 CONFIG *newc = new CONFIG;
96a9758165cd Initial revision
carl
parents:
diff changeset
962 load_conf(*newc, "dnsbl.conf");
96a9758165cd Initial revision
carl
parents:
diff changeset
963 newc->load_time = time(NULL);
96a9758165cd Initial revision
carl
parents:
diff changeset
964 return newc;
96a9758165cd Initial revision
carl
parents:
diff changeset
965 }
96a9758165cd Initial revision
carl
parents:
diff changeset
966
96a9758165cd Initial revision
carl
parents:
diff changeset
967
96a9758165cd Initial revision
carl
parents:
diff changeset
968 ////////////////////////////////////////////////
96a9758165cd Initial revision
carl
parents:
diff changeset
969 // thread to watch the old config files for changes
96a9758165cd Initial revision
carl
parents:
diff changeset
970 // and reload when needed. we also cleanup old
96a9758165cd Initial revision
carl
parents:
diff changeset
971 // configs whose reference count has gone to zero.
96a9758165cd Initial revision
carl
parents:
diff changeset
972 //
96a9758165cd Initial revision
carl
parents:
diff changeset
973 static void* config_loader(void *arg);
96a9758165cd Initial revision
carl
parents:
diff changeset
974 static void* config_loader(void *arg) {
96a9758165cd Initial revision
carl
parents:
diff changeset
975 typedef set<CONFIG *> configp_set;
96a9758165cd Initial revision
carl
parents:
diff changeset
976 configp_set old_configs;
18
041ea016b684 add scanning for bare hostnames
carl
parents: 16
diff changeset
977 while (loader_run) {
0
96a9758165cd Initial revision
carl
parents:
diff changeset
978 sleep(180); // look for modifications every 3 minutes
18
041ea016b684 add scanning for bare hostnames
carl
parents: 16
diff changeset
979 if (!loader_run) break;
0
96a9758165cd Initial revision
carl
parents:
diff changeset
980 CONFIG &dc = *config;
96a9758165cd Initial revision
carl
parents:
diff changeset
981 time_t then = dc.load_time;
96a9758165cd Initial revision
carl
parents:
diff changeset
982 struct stat st;
96a9758165cd Initial revision
carl
parents:
diff changeset
983 bool reload = false;
96a9758165cd Initial revision
carl
parents:
diff changeset
984 for (string_list::iterator i=dc.config_files.begin(); i!=dc.config_files.end(); i++) {
96a9758165cd Initial revision
carl
parents:
diff changeset
985 char *fn = *i;
96a9758165cd Initial revision
carl
parents:
diff changeset
986 if (stat(fn, &st)) reload = true; // file disappeared
96a9758165cd Initial revision
carl
parents:
diff changeset
987 else if (st.st_mtime > then) reload = true; // file modified
96a9758165cd Initial revision
carl
parents:
diff changeset
988 if (reload) break;
96a9758165cd Initial revision
carl
parents:
diff changeset
989 }
96a9758165cd Initial revision
carl
parents:
diff changeset
990 if (reload) {
96a9758165cd Initial revision
carl
parents:
diff changeset
991 CONFIG *newc = new_conf();
96a9758165cd Initial revision
carl
parents:
diff changeset
992 // replace the global config pointer
96a9758165cd Initial revision
carl
parents:
diff changeset
993 pthread_mutex_lock(&config_mutex);
96a9758165cd Initial revision
carl
parents:
diff changeset
994 CONFIG *old = config;
96a9758165cd Initial revision
carl
parents:
diff changeset
995 config = newc;
96a9758165cd Initial revision
carl
parents:
diff changeset
996 pthread_mutex_unlock(&config_mutex);
96a9758165cd Initial revision
carl
parents:
diff changeset
997 if (old) old_configs.insert(old);
96a9758165cd Initial revision
carl
parents:
diff changeset
998 }
96a9758165cd Initial revision
carl
parents:
diff changeset
999 // now look for old configs with zero ref counts
96a9758165cd Initial revision
carl
parents:
diff changeset
1000 for (configp_set::iterator i=old_configs.begin(); i!=old_configs.end(); ) {
96a9758165cd Initial revision
carl
parents:
diff changeset
1001 CONFIG *old = *i;
96a9758165cd Initial revision
carl
parents:
diff changeset
1002 if (!old->reference_count) {
96a9758165cd Initial revision
carl
parents:
diff changeset
1003 delete old; // destructor does all the work
96a9758165cd Initial revision
carl
parents:
diff changeset
1004 old_configs.erase(i++);
96a9758165cd Initial revision
carl
parents:
diff changeset
1005 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1006 else i++;
96a9758165cd Initial revision
carl
parents:
diff changeset
1007 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1008 }
18
041ea016b684 add scanning for bare hostnames
carl
parents: 16
diff changeset
1009 return NULL;
0
96a9758165cd Initial revision
carl
parents:
diff changeset
1010 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1011
96a9758165cd Initial revision
carl
parents:
diff changeset
1012
96a9758165cd Initial revision
carl
parents:
diff changeset
1013 static void usage(char *prog);
96a9758165cd Initial revision
carl
parents:
diff changeset
1014 static void usage(char *prog)
96a9758165cd Initial revision
carl
parents:
diff changeset
1015 {
16
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
1016 fprintf(stderr, "Usage: %s [-d] [-c] -p socket-addr [-t timeout]\n", prog);
0
96a9758165cd Initial revision
carl
parents:
diff changeset
1017 fprintf(stderr, "where socket-addr is for the connection to sendmail and should be one of\n");
96a9758165cd Initial revision
carl
parents:
diff changeset
1018 fprintf(stderr, " inet:port@local-ip-address\n");
96a9758165cd Initial revision
carl
parents:
diff changeset
1019 fprintf(stderr, " local:local-domain-socket-file-name\n");
9
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
1020 fprintf(stderr, "-c will load and dump the config to stdout\n");
16
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
1021 fprintf(stderr, "-d will add some syslog debug messages\n");
0
96a9758165cd Initial revision
carl
parents:
diff changeset
1022 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1023
96a9758165cd Initial revision
carl
parents:
diff changeset
1024
96a9758165cd Initial revision
carl
parents:
diff changeset
1025 int main(int argc, char**argv)
96a9758165cd Initial revision
carl
parents:
diff changeset
1026 {
3
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1027 bool check = false;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1028 bool setconn = false;
0
96a9758165cd Initial revision
carl
parents:
diff changeset
1029 int c;
16
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
1030 const char *args = "p:t:hcd";
0
96a9758165cd Initial revision
carl
parents:
diff changeset
1031 extern char *optarg;
96a9758165cd Initial revision
carl
parents:
diff changeset
1032
96a9758165cd Initial revision
carl
parents:
diff changeset
1033 // Process command line options
96a9758165cd Initial revision
carl
parents:
diff changeset
1034 while ((c = getopt(argc, argv, args)) != -1) {
96a9758165cd Initial revision
carl
parents:
diff changeset
1035 switch (c) {
96a9758165cd Initial revision
carl
parents:
diff changeset
1036 case 'p':
96a9758165cd Initial revision
carl
parents:
diff changeset
1037 if (optarg == NULL || *optarg == '\0') {
96a9758165cd Initial revision
carl
parents:
diff changeset
1038 fprintf(stderr, "Illegal conn: %s\n", optarg);
96a9758165cd Initial revision
carl
parents:
diff changeset
1039 exit(EX_USAGE);
96a9758165cd Initial revision
carl
parents:
diff changeset
1040 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1041 if (smfi_setconn(optarg) == MI_FAILURE) {
96a9758165cd Initial revision
carl
parents:
diff changeset
1042 fprintf(stderr, "smfi_setconn failed\n");
96a9758165cd Initial revision
carl
parents:
diff changeset
1043 exit(EX_SOFTWARE);
96a9758165cd Initial revision
carl
parents:
diff changeset
1044 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1045
96a9758165cd Initial revision
carl
parents:
diff changeset
1046 if (strncasecmp(optarg, "unix:", 5) == 0) unlink(optarg + 5);
96a9758165cd Initial revision
carl
parents:
diff changeset
1047 else if (strncasecmp(optarg, "local:", 6) == 0) unlink(optarg + 6);
3
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1048 setconn = true;
0
96a9758165cd Initial revision
carl
parents:
diff changeset
1049 break;
96a9758165cd Initial revision
carl
parents:
diff changeset
1050
96a9758165cd Initial revision
carl
parents:
diff changeset
1051 case 't':
96a9758165cd Initial revision
carl
parents:
diff changeset
1052 if (optarg == NULL || *optarg == '\0') {
96a9758165cd Initial revision
carl
parents:
diff changeset
1053 fprintf(stderr, "Illegal timeout: %s\n", optarg);
96a9758165cd Initial revision
carl
parents:
diff changeset
1054 exit(EX_USAGE);
96a9758165cd Initial revision
carl
parents:
diff changeset
1055 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1056 if (smfi_settimeout(atoi(optarg)) == MI_FAILURE) {
96a9758165cd Initial revision
carl
parents:
diff changeset
1057 fprintf(stderr, "smfi_settimeout failed\n");
96a9758165cd Initial revision
carl
parents:
diff changeset
1058 exit(EX_SOFTWARE);
96a9758165cd Initial revision
carl
parents:
diff changeset
1059 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1060 break;
96a9758165cd Initial revision
carl
parents:
diff changeset
1061
3
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1062 case 'c':
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1063 check = true;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1064 break;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1065
16
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
1066 case 'd':
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
1067 debug_syslog = true;
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
1068 break;
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
1069
0
96a9758165cd Initial revision
carl
parents:
diff changeset
1070 case 'h':
96a9758165cd Initial revision
carl
parents:
diff changeset
1071 default:
96a9758165cd Initial revision
carl
parents:
diff changeset
1072 usage(argv[0]);
96a9758165cd Initial revision
carl
parents:
diff changeset
1073 exit(EX_USAGE);
96a9758165cd Initial revision
carl
parents:
diff changeset
1074 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1075 }
5
793ac9cc114d updates to use dcc conf files
carl
parents: 4
diff changeset
1076
793ac9cc114d updates to use dcc conf files
carl
parents: 4
diff changeset
1077 if (check) {
793ac9cc114d updates to use dcc conf files
carl
parents: 4
diff changeset
1078 CONFIG &dc = *new_conf();
793ac9cc114d updates to use dcc conf files
carl
parents: 4
diff changeset
1079 dumpit(dc);
793ac9cc114d updates to use dcc conf files
carl
parents: 4
diff changeset
1080 return 0;
793ac9cc114d updates to use dcc conf files
carl
parents: 4
diff changeset
1081 }
793ac9cc114d updates to use dcc conf files
carl
parents: 4
diff changeset
1082
0
96a9758165cd Initial revision
carl
parents:
diff changeset
1083 if (!setconn) {
96a9758165cd Initial revision
carl
parents:
diff changeset
1084 fprintf(stderr, "%s: Missing required -p argument\n", argv[0]);
96a9758165cd Initial revision
carl
parents:
diff changeset
1085 usage(argv[0]);
96a9758165cd Initial revision
carl
parents:
diff changeset
1086 exit(EX_USAGE);
96a9758165cd Initial revision
carl
parents:
diff changeset
1087 }
5
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1088
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1089 if (smfi_register(smfilter) == MI_FAILURE) {
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1090 fprintf(stderr, "smfi_register failed\n");
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1091 exit(EX_UNAVAILABLE);
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1092 }
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1093
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1094 // switch to background mode
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1095 if (daemon(1,0) < 0) {
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1096 fprintf(stderr, "daemon() call failed\n");
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1097 exit(EX_UNAVAILABLE);
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1098 }
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1099
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1100 // initialize the thread sync objects
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1101 pthread_mutex_init(&config_mutex, 0);
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1102 pthread_mutex_init(&syslog_mutex, 0);
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1103 pthread_mutex_init(&resolve_mutex, 0);
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1104
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1105 // load the initial config
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1106 config = new_conf();
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1107
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1108 // only create threads after the fork() in daemon
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1109 pthread_t tid;
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1110 if (pthread_create(&tid, 0, config_loader, 0))
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1111 my_syslog("failed to create config loader thread");
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1112 if (pthread_detach(tid))
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1113 my_syslog("failed to detach config loader thread");
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1114
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1115 // write the pid
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1116 const char *pidpath = "/var/run/dnsbl.pid";
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1117 unlink(pidpath);
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1118 FILE *f = fopen(pidpath, "w");
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1119 if (f) {
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1120 fprintf(f, "-%d\n", (u_int)getpgrp());
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1121 fclose(f);
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1122 }
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1123
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1124 time_t starting = time(NULL);
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1125 int rc = smfi_main();
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1126 if (time(NULL) > starting+5*60) {
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1127 my_syslog("trying to restart after smfi_main()");
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1128 loader_run = false; // eventually the config loader thread will terminate
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1129 execvp(argv[0], argv);
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1130 }
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1131 exit((rc == MI_SUCCESS) ? 0 : EX_UNAVAILABLE);
0
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1132 }
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1133