annotate src/dnsbl.cpp @ 57:419e00901570

changes to handle 5iantlavalamp.com
author carl
date Thu, 28 Oct 2004 22:48:52 -0700
parents 44babba1a9b9
children 7bb8bbf79285
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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 3) Add option to only allow one recipient if the return path is empty.
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27
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28 4) Check if the envelope from domain name primary MX points 127.0.0.0/8
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29
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30 */
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31
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32
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33 // from sendmail sample
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34 #include <sys/types.h>
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35 #include <sys/stat.h>
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36 #include <errno.h>
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37 #include <sysexits.h>
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38 #include <unistd.h>
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39
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40 // needed for socket io
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41 #include <sys/ioctl.h>
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42 #include <net/if.h>
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43 #include <arpa/inet.h>
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44 #include <netinet/in.h>
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45 #include <netinet/tcp.h>
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46 #include <netdb.h>
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47 #include <sys/socket.h>
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48 #include <sys/un.h>
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49
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50 // needed for thread
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51 #include <pthread.h>
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52
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53 // needed for std c++ collections
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54 #include <set>
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55 #include <map>
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56 #include <list>
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57
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58 // for the dns resolver
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59 #include <netinet/in.h>
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60 #include <arpa/nameser.h>
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61 #include <resolv.h>
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62
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63 // misc stuff needed here
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64 #include <ctype.h>
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65 #include <fstream>
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66 #include <syslog.h>
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67 #include <pwd.h>
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68
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69 static char* dnsbl_version="$Id$";
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70
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71 #define DEFAULT "default"
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72 #define WHITE "white"
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73 #define BLACK "black"
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74 #define OK "ok"
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75 #define MANY "many"
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76
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77 enum status {oksofar, // not rejected yet
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78 white, // whitelisted by envelope from
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79 black, // blacklisted by envelope from or to
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80 reject, // rejected by a dns list
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81 reject_tag, // too many bad html tags
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82 reject_host}; // too many hosts/urls in body
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bd0b1a153f67 no message
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83
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84 using namespace std;
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85
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86 extern "C" {
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87 #include "libmilter/mfapi.h"
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88 sfsistat mlfi_connect(SMFICTX *ctx, char *hostname, _SOCK_ADDR *hostaddr);
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89 sfsistat mlfi_envfrom(SMFICTX *ctx, char **argv);
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90 sfsistat mlfi_envrcpt(SMFICTX *ctx, char **argv);
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91 sfsistat mlfi_body(SMFICTX *ctx, u_char *data, size_t len);
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92 sfsistat mlfi_eom(SMFICTX *ctx);
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93 sfsistat mlfi_abort(SMFICTX *ctx);
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94 sfsistat mlfi_close(SMFICTX *ctx);
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95 }
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96
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97 struct ltstr {
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98 bool operator()(char* s1, char* s2) const {
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99 return strcmp(s1, s2) < 0;
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100 }
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101 };
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102
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103 struct DNSBL {
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104 char *suffix; // blacklist suffix like blackholes.five-ten-sg.com
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105 char *message; // error message with one or two %s operators for the ip address replacement
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106 DNSBL(char *s, char *m);
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107 };
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108 DNSBL::DNSBL(char *s, char *m) {
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109 suffix = s;
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110 message = m;
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111 }
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112
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113 typedef DNSBL * DNSBLP;
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114 typedef list<DNSBLP> DNSBLL;
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115 typedef DNSBLL * DNSBLLP;
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116 typedef map<char *, char *, ltstr> string_map;
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117 typedef map<char *, string_map *, ltstr> from_map;
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118 typedef map<char *, DNSBLP, ltstr> dnsblp_map;
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119 typedef map<char *, DNSBLLP, ltstr> dnsbllp_map;
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120 typedef set<char *, ltstr> string_set;
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121 typedef set<int> int_set;
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122 typedef list<char *> string_list;
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123 typedef map<char *, int, ltstr> ns_mapper;
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124
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125 struct ns_map {
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126 // all the strings are owned by the keys/values in the ns_host string map
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127 string_map ns_host; // nameserver name -> host name that uses this name server
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128 ns_mapper ns_ip; // nameserver name -> ip address of the name server
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129 };
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130
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131 struct CONFIG {
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132 // the only mutable stuff once it has been loaded from the config file
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133 int reference_count; // protected by the global config_mutex
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134 // all the rest is constant after loading from the config file
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135 int generation;
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136 time_t load_time;
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137 string_list config_files;
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138 dnsblp_map dnsbls;
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139 dnsbllp_map dnsblls;
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140 from_map env_from;
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141 string_map env_to_dnsbll; // map recipient to a named dnsbll
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142 string_map env_to_chkfrom; // map recipient to a named from map
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143 char * content_suffix; // for sbl url body filtering
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144 char * content_message; // ""
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145 string_set content_host_ignore;// hosts to ignore for content sbl checking
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146 char * host_limit_message; // error message for excessive host names
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147 int host_limit; // limit on host names
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148 bool host_random; // pick a random selection of host names rather than error for excessive hosts
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149 char * tag_limit_message; // error message for excessive bad html tags
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150 int tag_limit; // limit on bad html tags
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151 string_set html_tags; // set of valid html tags
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152 string_set tlds; // set of valid tld components
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153 CONFIG();
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154 ~CONFIG();
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155 };
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156 CONFIG::CONFIG() {
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157 reference_count = 0;
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158 generation = 0;
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159 load_time = 0;
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160 content_suffix = NULL;
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161 content_message = NULL;
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162 host_limit_message = NULL;
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163 host_limit = 0;
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164 host_random = false;
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165 tag_limit_message = NULL;
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166 tag_limit = 0;
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167 }
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168 CONFIG::~CONFIG() {
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169 for (dnsblp_map::iterator i=dnsbls.begin(); i!=dnsbls.end(); i++) {
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170 DNSBLP d = (*i).second;
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171 // delete the underlying DNSBL objects.
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172 delete d;
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173 }
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174 for (dnsbllp_map::iterator i=dnsblls.begin(); i!=dnsblls.end(); i++) {
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175 DNSBLLP d = (*i).second;
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176 // *d is a list of pointers to DNSBL objects, but
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177 // the underlying objects have already been deleted above.
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178 delete d;
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179 }
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180 for (from_map::iterator i=env_from.begin(); i!=env_from.end(); i++) {
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181 string_map *d = (*i).second;
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182 delete d;
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183 }
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184 }
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185
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186 static bool debug_syslog = false;
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187 static bool loader_run = true; // used to stop the config loader thread
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188 static string_set all_strings; // owns all the strings, only modified by the config loader thread
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189 static CONFIG * config = NULL; // protected by the config_mutex
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190 static int generation = 0; // protected by the config_mutex
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191
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192 static pthread_mutex_t config_mutex;
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193 static pthread_mutex_t syslog_mutex;
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194 static pthread_mutex_t resolve_mutex;
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195
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196 struct mlfiPriv;
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197
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198
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199 ////////////////////////////////////////////////
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200 // helper to discard the strings and objects held by an ns_map
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201 //
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202 static void discard(ns_map &s);
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203 static void discard(ns_map &s) {
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204 for (string_map::iterator i=s.ns_host.begin(); i!=s.ns_host.end(); i++) {
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205 char *x = (*i).first;
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206 char *y = (*i).second;
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207 free(x);
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208 free(y);
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209 }
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210 s.ns_ip.clear();
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211 s.ns_host.clear();
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212 }
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213
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214 ////////////////////////////////////////////////
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215 // helper to register a string in an ns_map
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216 //
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217 static void register_string(ns_map &s, char *name, char *refer);
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218 static void register_string(ns_map &s, char *name, char *refer) {
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219 string_map::iterator i = s.ns_host.find(name);
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220 if (i != s.ns_host.end()) return;
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221 char *x = strdup(name);
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222 char *y = strdup(refer);
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223 s.ns_ip[x] = 0;
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224 s.ns_host[x] = y;
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225
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226 }
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227
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228 ////////////////////////////////////////////////
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229 // helper to discard the strings held by a string_set
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230 //
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231 static void discard(string_set &s);
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232 static void discard(string_set &s) {
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233 for (string_set::iterator i=s.begin(); i!=s.end(); i++) {
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234 free(*i);
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235 }
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236 s.clear();
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237 }
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238
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239 ////////////////////////////////////////////////
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240 // helper to register a string in a string set
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241 //
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242 static char* register_string(string_set &s, char *name);
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243 static char* register_string(string_set &s, char *name) {
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244 string_set::iterator i = s.find(name);
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245 if (i != s.end()) return *i;
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246 char *x = strdup(name);
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247 s.insert(x);
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248 return x;
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249 }
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250
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251 ////////////////////////////////////////////////
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252 // syslog a message
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253 //
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254 static void my_syslog(mlfiPriv *priv, char *text);
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255
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256
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257 // include the content scanner
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258 #include "scanner.cpp"
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259
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260
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261 ////////////////////////////////////////////////
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262 // mail filter private data, held for us by sendmail
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263 //
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264 struct mlfiPriv
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265 {
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266 // connection specific data
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267 CONFIG *pc; // global context with our maps
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268 int ip; // ip4 address of the smtp client
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269 map<DNSBLP, status> checked; // status from those lists
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270 // message specific data
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271 char *mailaddr; // envelope from value
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272 char *queueid; // sendmail queue id
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273 bool authenticated; // client authenticated? if so, suppress all dnsbl checks
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274 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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275 bool only_whites; // every recipient is whitelisted?
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276 string_set non_whites; // remember the non-whitelisted recipients so we can remove them if need be
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277 recorder *memory; // memory for the content scanner
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278 url_scanner *scanner; // object to handle body scanning
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279 mlfiPriv();
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280 ~mlfiPriv();
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281 void reset(bool final = false); // for a new message
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282 };
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283 mlfiPriv::mlfiPriv() {
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284 pthread_mutex_lock(&config_mutex);
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285 pc = config;
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286 pc->reference_count++;
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287 pthread_mutex_unlock(&config_mutex);
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288 ip = 0;
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289 mailaddr = NULL;
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290 queueid = NULL;
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291 authenticated = false;
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292 have_whites = false;
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293 only_whites = true;
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294 memory = new recorder(this, &pc->html_tags, &pc->tlds);
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295 scanner = new url_scanner(memory);
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296 }
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297 mlfiPriv::~mlfiPriv() {
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298 pthread_mutex_lock(&config_mutex);
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299 pc->reference_count--;
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300 pthread_mutex_unlock(&config_mutex);
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301 reset(true);
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302 }
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303 void mlfiPriv::reset(bool final) {
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304 if (mailaddr) free(mailaddr);
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305 if (queueid) free(queueid);
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306 discard(non_whites);
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307 delete memory;
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308 delete scanner;
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309 if (!final) {
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310 mailaddr = NULL;
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311 queueid = NULL;
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312 authenticated = false;
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313 have_whites = false;
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314 only_whites = true;
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315 memory = new recorder(this, &pc->html_tags, &pc->tlds);
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316 scanner = new url_scanner(memory);
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317 }
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318 }
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319
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320 #define MLFIPRIV ((struct mlfiPriv *) smfi_getpriv(ctx))
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321
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322
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323 ////////////////////////////////////////////////
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324 // syslog a message
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325 //
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326 static void my_syslog(mlfiPriv *priv, char *text) {
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327 char buf[1000];
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328 if (priv) {
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329 snprintf(buf, sizeof(buf), "%s: %s", priv->queueid, text);
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330 text = buf;
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331 }
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332 pthread_mutex_lock(&syslog_mutex);
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333 openlog("dnsbl", LOG_PID, LOG_MAIL);
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334 syslog(LOG_NOTICE, "%s", text);
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335 closelog();
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336 pthread_mutex_unlock(&syslog_mutex);
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337 }
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338
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339 static void my_syslog(char *text);
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340 static void my_syslog(char *text) {
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341 my_syslog(NULL, text);
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342 }
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343
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344 ////////////////////////////////////////////////
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345 // register a global string
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346 //
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347 static char* register_string(char *name);
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348 static char* register_string(char *name) {
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349 return register_string(all_strings, name);
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350 }
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351
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352
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353 static char* next_token(char *delim);
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354 static char* next_token(char *delim) {
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355 char *name = strtok(NULL, delim);
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356 if (!name) return name;
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357 return register_string(name);
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358 }
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359
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360
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361 ////////////////////////////////////////////////
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362 // lookup an email address in the env_from or env_to maps
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363 //
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364 static char* lookup1(char *email, string_map map);
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365 static char* lookup1(char *email, string_map map) {
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366 string_map::iterator i = map.find(email);
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367 if (i != map.end()) return (*i).second;
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368 char *x = strchr(email, '@');
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369 if (!x) return DEFAULT;
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370 x++;
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371 i = map.find(x);
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372 if (i != map.end()) return (*i).second;
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373 return DEFAULT;
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374 }
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375
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376
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377 ////////////////////////////////////////////////
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378 // lookup an email address in the env_from or env_to maps
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379 // this email address is passed in from sendmail, and will
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380 // always be enclosed in <>. It may have mixed case, just
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381 // as the mail client sent it.
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382 //
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383 static char* lookup(char* email, string_map map);
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384 static char* lookup(char* email, string_map map) {
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385 int n = strlen(email)-2;
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386 if (n < 1) return DEFAULT; // malformed
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387 char *key = strdup(email+1);
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388 key[n] = '\0';
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389 for (int i=0; i<n; i++) key[i] = tolower(key[i]);
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390 char *rc = lookup1(key, map);
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391 free(key);
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392 return rc;
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393 }
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394
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395
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396 ////////////////////////////////////////////////
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397 // find the dnsbl with a specific name
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398 //
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399 static DNSBLP find_dnsbl(CONFIG &dc, char *name);
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400 static DNSBLP find_dnsbl(CONFIG &dc, char *name) {
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401 dnsblp_map::iterator i = dc.dnsbls.find(name);
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402 if (i == dc.dnsbls.end()) return NULL;
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403 return (*i).second;
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404 }
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405
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406
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407 ////////////////////////////////////////////////
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408 // find the dnsbll with a specific name
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409 //
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410 static DNSBLLP find_dnsbll(CONFIG &dc, char *name);
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411 static DNSBLLP find_dnsbll(CONFIG &dc, char *name) {
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412 dnsbllp_map::iterator i = dc.dnsblls.find(name);
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413 if (i == dc.dnsblls.end()) return NULL;
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414 return (*i).second;
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415 }
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416
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417
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418 ////////////////////////////////////////////////
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419 // find the envfrom map with a specific name
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420 //
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421 static string_map* find_from_map(CONFIG &dc, char *name);
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422 static string_map* find_from_map(CONFIG &dc, char *name) {
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423 from_map::iterator i = dc.env_from.find(name);
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424 if (i == dc.env_from.end()) return NULL;
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425 return (*i).second;
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426 }
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427
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428
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429 static string_map& really_find_from_map(CONFIG &dc, char *name);
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430 static string_map& really_find_from_map(CONFIG &dc, char *name) {
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431 string_map *sm = find_from_map(dc, name);
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432 if (!sm) {
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433 sm = new string_map;
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434 dc.env_from[name] = sm;
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435 }
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436 return *sm;
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437 }
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438
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439
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440 ////////////////////////////////////////////////
8
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441 //
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442 // ask a dns question and get an A record answer - we don't try
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443 // very hard, just using the default resolver retry settings.
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444 // If we cannot get an answer, we just accept the mail. The
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445 // caller must ensure thread safety.
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446 //
0
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447 //
34
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448 static int dns_interface(char *question, bool maybe_ip, ns_map *nameservers);
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449 static int dns_interface(char *question, bool maybe_ip, ns_map *nameservers) {
16
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450 #ifdef NS_PACKETSZ
8
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451 u_char answer[NS_PACKETSZ];
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452 int length = res_search(question, ns_c_in, ns_t_a, answer, sizeof(answer));
23
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453 if (length >= 0) { // no error yet
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454 // parse the answer
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455 ns_msg handle;
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456 ns_rr rr;
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457 if (ns_initparse(answer, length, &handle) == 0) {
34
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458 // look for ns names
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459 if (nameservers) {
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460 ns_map &ns = *nameservers;
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461 int rrnum = 0;
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462 while (ns_parserr(&handle, ns_s_ns, rrnum++, &rr) == 0) {
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463 if (ns_rr_type(rr) == ns_t_ns) {
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464 char nam[NS_MAXDNAME+1];
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465 char *n = nam;
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466 const u_char *p = ns_rr_rdata(rr);
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467 while (((n-nam) < NS_MAXDNAME) && ((p-answer) < length) && *p) {
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diff changeset
468 size_t s = *(p++);
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diff changeset
469 if (s > 191) {
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diff changeset
470 // compression pointer
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471 s = (s-192)*256 + *(p++);
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472 if (s >= length) break; // pointer outside bounds of answer
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473 p = answer + s;
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474 s = *(p++);
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diff changeset
475 }
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diff changeset
476 if (s > 0) {
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477 if ((n-nam) >= (NS_MAXDNAME-s)) break; // destination would overflow name buffer
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parents: 29
diff changeset
478 if ((p-answer) >= (length-s)) break; // source outside bounds of answer
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diff changeset
479 memcpy(n, p, s);
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diff changeset
480 n += s;
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diff changeset
481 p += s;
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diff changeset
482 *(n++) = '.';
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diff changeset
483 }
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parents: 29
diff changeset
484 }
36
95607fbef608 no message
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parents: 35
diff changeset
485 if (n-nam) n--; // remove trailing .
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parents: 35
diff changeset
486 *n = '\0'; // null terminate it
53
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diff changeset
487 register_string(ns, nam, question); // ns host to lookup later
34
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diff changeset
488 }
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diff changeset
489 }
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diff changeset
490 rrnum = 0;
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diff changeset
491 while (ns_parserr(&handle, ns_s_ar, rrnum++, &rr) == 0) {
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diff changeset
492 if (ns_rr_type(rr) == ns_t_a) {
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diff changeset
493 char* nam = (char*)ns_rr_name(rr);
53
c2371bb6cf84 3.5 - better error message when rejecting based on ns records on the sbl
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parents: 48
diff changeset
494 ns_mapper::iterator i = ns.ns_ip.find(nam);
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parents: 48
diff changeset
495 if (i != ns.ns_ip.end()) {
34
fc7f8f3ea90f look for NS records on the SBL also
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diff changeset
496 // we want this ip address
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diff changeset
497 int address;
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498 memcpy(&address, ns_rr_rdata(rr), sizeof(address));
53
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diff changeset
499 ns.ns_ip[nam] = address;
34
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500 }
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diff changeset
501 }
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diff changeset
502 }
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diff changeset
503 }
23
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diff changeset
504 int rrnum = 0;
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diff changeset
505 while (ns_parserr(&handle, ns_s_an, rrnum++, &rr) == 0) {
06de5ab6a232 add url decoding stage, allow http:/ single / in yahoo redirector, allow ip address hostnames
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diff changeset
506 if (ns_rr_type(rr) == ns_t_a) {
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diff changeset
507 int address;
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diff changeset
508 memcpy(&address, ns_rr_rdata(rr), sizeof(address));
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diff changeset
509 return address;
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parents: 22
diff changeset
510 }
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diff changeset
511 }
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parents: 22
diff changeset
512 }
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diff changeset
513 }
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diff changeset
514 if (maybe_ip) {
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diff changeset
515 // might be a bare ip address
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diff changeset
516 in_addr ip;
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diff changeset
517 if (inet_aton(question, &ip)) {
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diff changeset
518 return ip.s_addr;
8
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diff changeset
519 }
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diff changeset
520 }
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diff changeset
521 return 0;
16
2ae8d953f1d0 add scanning for bare hostnames
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diff changeset
522 #else
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523 struct hostent *host = gethostbyname(question);
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diff changeset
524 if (!host) return 0;
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diff changeset
525 if (host->h_addrtype != AF_INET) return 0;
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diff changeset
526 int address;
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diff changeset
527 memcpy(&address, host->h_addr, sizeof(address));
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diff changeset
528 return address;
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diff changeset
529 #endif
8
dbe18921f741 integration work on url scanner
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diff changeset
530 }
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parents: 5
diff changeset
531
34
fc7f8f3ea90f look for NS records on the SBL also
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diff changeset
532 static int protected_dns_interface(char *question, bool maybe_ip, ns_map *nameservers);
fc7f8f3ea90f look for NS records on the SBL also
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diff changeset
533 static int protected_dns_interface(char *question, bool maybe_ip, ns_map *nameservers) {
8
dbe18921f741 integration work on url scanner
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parents: 5
diff changeset
534 int ans;
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diff changeset
535 pthread_mutex_lock(&resolve_mutex);
34
fc7f8f3ea90f look for NS records on the SBL also
carl
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diff changeset
536 ans = dns_interface(question, maybe_ip, nameservers);
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
537 pthread_mutex_unlock(&resolve_mutex);
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
538 return ans;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
539
dbe18921f741 integration work on url scanner
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diff changeset
540 }
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
541
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
542 ////////////////////////////////////////////////
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
543 // check a single dnsbl
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
544 //
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
545 static status check_single(int ip, char *suffix);
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
546 static status check_single(int ip, char *suffix) {
0
96a9758165cd Initial revision
carl
parents:
diff changeset
547 // make a dns question
96a9758165cd Initial revision
carl
parents:
diff changeset
548 const u_char *src = (const u_char *)&ip;
96a9758165cd Initial revision
carl
parents:
diff changeset
549 if (src[0] == 127) return oksofar; // don't do dns lookups on localhost
16
2ae8d953f1d0 add scanning for bare hostnames
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parents: 14
diff changeset
550 #ifdef NS_MAXDNAME
0
96a9758165cd Initial revision
carl
parents:
diff changeset
551 char question[NS_MAXDNAME];
16
2ae8d953f1d0 add scanning for bare hostnames
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parents: 14
diff changeset
552 #else
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diff changeset
553 char question[1000];
2ae8d953f1d0 add scanning for bare hostnames
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parents: 14
diff changeset
554 #endif
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
555 snprintf(question, sizeof(question), "%u.%u.%u.%u.%s.", src[3], src[2], src[1], src[0], suffix);
dbe18921f741 integration work on url scanner
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parents: 5
diff changeset
556 // ask the question, if we get an A record it implies a blacklisted ip address
34
fc7f8f3ea90f look for NS records on the SBL also
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diff changeset
557 return (protected_dns_interface(question, false, NULL)) ? reject : oksofar;
8
dbe18921f741 integration work on url scanner
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diff changeset
558 }
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diff changeset
559
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diff changeset
560
dbe18921f741 integration work on url scanner
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parents: 5
diff changeset
561 ////////////////////////////////////////////////
dbe18921f741 integration work on url scanner
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parents: 5
diff changeset
562 // check a single dnsbl
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
563 //
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diff changeset
564 static status check_single(int ip, DNSBL &bl);
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
565 static status check_single(int ip, DNSBL &bl) {
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
566 return check_single(ip, bl.suffix);
0
96a9758165cd Initial revision
carl
parents:
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567 }
96a9758165cd Initial revision
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parents:
diff changeset
568
96a9758165cd Initial revision
carl
parents:
diff changeset
569
96a9758165cd Initial revision
carl
parents:
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570 ////////////////////////////////////////////////
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carl
parents:
diff changeset
571 // check the dnsbls specified for this recipient
96a9758165cd Initial revision
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parents:
diff changeset
572 //
96a9758165cd Initial revision
carl
parents:
diff changeset
573 static status check_dnsbl(mlfiPriv &priv, DNSBLLP dnsbllp, DNSBLP &rejectlist);
96a9758165cd Initial revision
carl
parents:
diff changeset
574 static status check_dnsbl(mlfiPriv &priv, DNSBLLP dnsbllp, DNSBLP &rejectlist) {
96a9758165cd Initial revision
carl
parents:
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575 if (priv.authenticated) return oksofar;
96a9758165cd Initial revision
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parents:
diff changeset
576 if (!dnsbllp) return oksofar;
96a9758165cd Initial revision
carl
parents:
diff changeset
577 DNSBLL &dnsbll = *dnsbllp;
96a9758165cd Initial revision
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parents:
diff changeset
578 for (DNSBLL::iterator i=dnsbll.begin(); i!=dnsbll.end(); i++) {
96a9758165cd Initial revision
carl
parents:
diff changeset
579 DNSBLP dp = *i; // non null by construction
96a9758165cd Initial revision
carl
parents:
diff changeset
580 status st;
96a9758165cd Initial revision
carl
parents:
diff changeset
581 map<DNSBLP, status>::iterator f = priv.checked.find(dp);
96a9758165cd Initial revision
carl
parents:
diff changeset
582 if (f == priv.checked.end()) {
96a9758165cd Initial revision
carl
parents:
diff changeset
583 // have not checked this list yet
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
584 st = check_single(priv.ip, *dp);
0
96a9758165cd Initial revision
carl
parents:
diff changeset
585 rejectlist = dp;
96a9758165cd Initial revision
carl
parents:
diff changeset
586 priv.checked[dp] = st;
96a9758165cd Initial revision
carl
parents:
diff changeset
587 }
96a9758165cd Initial revision
carl
parents:
diff changeset
588 else {
96a9758165cd Initial revision
carl
parents:
diff changeset
589 st = (*f).second;
96a9758165cd Initial revision
carl
parents:
diff changeset
590 rejectlist = (*f).first;
96a9758165cd Initial revision
carl
parents:
diff changeset
591 }
96a9758165cd Initial revision
carl
parents:
diff changeset
592 if (st == reject) return st;
96a9758165cd Initial revision
carl
parents:
diff changeset
593 }
96a9758165cd Initial revision
carl
parents:
diff changeset
594 return oksofar;
96a9758165cd Initial revision
carl
parents:
diff changeset
595 }
96a9758165cd Initial revision
carl
parents:
diff changeset
596
96a9758165cd Initial revision
carl
parents:
diff changeset
597
96a9758165cd Initial revision
carl
parents:
diff changeset
598 ////////////////////////////////////////////////
55
44babba1a9b9 updates for 3.6, better documentation on removing content filtering, missing some files in cvs
carl
parents: 53
diff changeset
599 // check the hosts from the body against the content dnsbl
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
600 //
16
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
601 static status check_hosts(mlfiPriv &priv, char *&host, int &ip);
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
602 static status check_hosts(mlfiPriv &priv, char *&host, int &ip) {
55
44babba1a9b9 updates for 3.6, better documentation on removing content filtering, missing some files in cvs
carl
parents: 53
diff changeset
603 CONFIG &dc = *priv.pc;
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
604 int count = 0;
34
fc7f8f3ea90f look for NS records on the SBL also
carl
parents: 29
diff changeset
605 ns_map nameservers;
44
6b79046b18c2 changes for 3.2
carl
parents: 43
diff changeset
606 bool ran = priv.pc->host_random;
6b79046b18c2 changes for 3.2
carl
parents: 43
diff changeset
607 int lim = priv.pc->host_limit; // we should not look at more than this many hosts
6b79046b18c2 changes for 3.2
carl
parents: 43
diff changeset
608 int cnt = priv.memory->hosts.size(); // number of hosts we could look at
6b79046b18c2 changes for 3.2
carl
parents: 43
diff changeset
609 int_set ips; // remove duplicate ip addresses
24
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
610 for (string_set::iterator i=priv.memory->hosts.begin(); i!=priv.memory->hosts.end(); i++) {
44
6b79046b18c2 changes for 3.2
carl
parents: 43
diff changeset
611 host = *i; // a reference into priv.memory->hosts, which will live until this smtp transaction is closed
57
419e00901570 changes to handle 5iantlavalamp.com
carl
parents: 55
diff changeset
612 string_set::iterator j = priv.pc->content_host_ignore.find(host);
419e00901570 changes to handle 5iantlavalamp.com
carl
parents: 55
diff changeset
613 if (j == priv.pc->content_host_ignore.end()) {
419e00901570 changes to handle 5iantlavalamp.com
carl
parents: 55
diff changeset
614 continue; // don't bother looking up this host
419e00901570 changes to handle 5iantlavalamp.com
carl
parents: 55
diff changeset
615 }
44
6b79046b18c2 changes for 3.2
carl
parents: 43
diff changeset
616 if ((cnt > lim) && (lim > 0) && ran) {
6b79046b18c2 changes for 3.2
carl
parents: 43
diff changeset
617 // try to only look at lim/cnt fraction of the available cnt host names
6b79046b18c2 changes for 3.2
carl
parents: 43
diff changeset
618 int r = rand() % cnt;
6b79046b18c2 changes for 3.2
carl
parents: 43
diff changeset
619 if (r >= lim) {
6b79046b18c2 changes for 3.2
carl
parents: 43
diff changeset
620 char buf[1000];
6b79046b18c2 changes for 3.2
carl
parents: 43
diff changeset
621 snprintf(buf, sizeof(buf), "host %s skipped", host);
6b79046b18c2 changes for 3.2
carl
parents: 43
diff changeset
622 my_syslog(&priv, buf);
6b79046b18c2 changes for 3.2
carl
parents: 43
diff changeset
623 continue;
6b79046b18c2 changes for 3.2
carl
parents: 43
diff changeset
624 }
6b79046b18c2 changes for 3.2
carl
parents: 43
diff changeset
625 }
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
626 count++;
44
6b79046b18c2 changes for 3.2
carl
parents: 43
diff changeset
627 if ((count > lim) && (lim > 0) && (!ran)) {
34
fc7f8f3ea90f look for NS records on the SBL also
carl
parents: 29
diff changeset
628 discard(nameservers);
fc7f8f3ea90f look for NS records on the SBL also
carl
parents: 29
diff changeset
629 return reject_host;
fc7f8f3ea90f look for NS records on the SBL also
carl
parents: 29
diff changeset
630 }
44
6b79046b18c2 changes for 3.2
carl
parents: 43
diff changeset
631 ip = protected_dns_interface(host, true, &nameservers);
16
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
632 if (debug_syslog) {
44
6b79046b18c2 changes for 3.2
carl
parents: 43
diff changeset
633 char buf[1000];
29
4dfdf33f1db0 add syslog msg freeing memory, use bare tld names without leading period
carl
parents: 28
diff changeset
634 if (ip) {
4dfdf33f1db0 add syslog msg freeing memory, use bare tld names without leading period
carl
parents: 28
diff changeset
635 char adr[sizeof "255.255.255.255"];
4dfdf33f1db0 add syslog msg freeing memory, use bare tld names without leading period
carl
parents: 28
diff changeset
636 adr[0] = '\0';
4dfdf33f1db0 add syslog msg freeing memory, use bare tld names without leading period
carl
parents: 28
diff changeset
637 inet_ntop(AF_INET, (const u_char *)&ip, adr, sizeof(adr));
4dfdf33f1db0 add syslog msg freeing memory, use bare tld names without leading period
carl
parents: 28
diff changeset
638 snprintf(buf, sizeof(buf), "host %s found at %s", host, adr);
4dfdf33f1db0 add syslog msg freeing memory, use bare tld names without leading period
carl
parents: 28
diff changeset
639 }
4dfdf33f1db0 add syslog msg freeing memory, use bare tld names without leading period
carl
parents: 28
diff changeset
640 else {
4dfdf33f1db0 add syslog msg freeing memory, use bare tld names without leading period
carl
parents: 28
diff changeset
641 snprintf(buf, sizeof(buf), "host %s not found", host);
4dfdf33f1db0 add syslog msg freeing memory, use bare tld names without leading period
carl
parents: 28
diff changeset
642 }
41
d95af8129dfa updates for 3.2, changing file layout, add queueid to messages
carl
parents: 40
diff changeset
643 my_syslog(&priv, buf);
16
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
644 }
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
645 if (ip) {
44
6b79046b18c2 changes for 3.2
carl
parents: 43
diff changeset
646 int_set::iterator i = ips.find(ip);
6b79046b18c2 changes for 3.2
carl
parents: 43
diff changeset
647 if (i == ips.end()) {
6b79046b18c2 changes for 3.2
carl
parents: 43
diff changeset
648 ips.insert(ip);
6b79046b18c2 changes for 3.2
carl
parents: 43
diff changeset
649 status st = check_single(ip, dc.content_suffix);
6b79046b18c2 changes for 3.2
carl
parents: 43
diff changeset
650 if (st == reject) {
6b79046b18c2 changes for 3.2
carl
parents: 43
diff changeset
651 discard(nameservers);
6b79046b18c2 changes for 3.2
carl
parents: 43
diff changeset
652 return st;
6b79046b18c2 changes for 3.2
carl
parents: 43
diff changeset
653 }
34
fc7f8f3ea90f look for NS records on the SBL also
carl
parents: 29
diff changeset
654 }
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
655 }
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
656 }
34
fc7f8f3ea90f look for NS records on the SBL also
carl
parents: 29
diff changeset
657 lim *= 4; // allow average of 3 ns per host name
53
c2371bb6cf84 3.5 - better error message when rejecting based on ns records on the sbl
carl
parents: 48
diff changeset
658 for (ns_mapper::iterator i=nameservers.ns_ip.begin(); i!=nameservers.ns_ip.end(); i++) {
34
fc7f8f3ea90f look for NS records on the SBL also
carl
parents: 29
diff changeset
659 count++;
fc7f8f3ea90f look for NS records on the SBL also
carl
parents: 29
diff changeset
660 if ((count > lim) && (lim > 0)) {
44
6b79046b18c2 changes for 3.2
carl
parents: 43
diff changeset
661 if (ran) continue; // don't complain
34
fc7f8f3ea90f look for NS records on the SBL also
carl
parents: 29
diff changeset
662 discard(nameservers);
fc7f8f3ea90f look for NS records on the SBL also
carl
parents: 29
diff changeset
663 return reject_host;
fc7f8f3ea90f look for NS records on the SBL also
carl
parents: 29
diff changeset
664 }
36
95607fbef608 no message
carl
parents: 35
diff changeset
665 host = (*i).first; // a transient reference that needs to be replaced before we return it
34
fc7f8f3ea90f look for NS records on the SBL also
carl
parents: 29
diff changeset
666 ip = (*i).second;
fc7f8f3ea90f look for NS records on the SBL also
carl
parents: 29
diff changeset
667 if (!ip) ip = protected_dns_interface(host, false, NULL);
fc7f8f3ea90f look for NS records on the SBL also
carl
parents: 29
diff changeset
668 if (debug_syslog) {
fc7f8f3ea90f look for NS records on the SBL also
carl
parents: 29
diff changeset
669 char buf[200];
fc7f8f3ea90f look for NS records on the SBL also
carl
parents: 29
diff changeset
670 if (ip) {
fc7f8f3ea90f look for NS records on the SBL also
carl
parents: 29
diff changeset
671 char adr[sizeof "255.255.255.255"];
fc7f8f3ea90f look for NS records on the SBL also
carl
parents: 29
diff changeset
672 adr[0] = '\0';
fc7f8f3ea90f look for NS records on the SBL also
carl
parents: 29
diff changeset
673 inet_ntop(AF_INET, (const u_char *)&ip, adr, sizeof(adr));
fc7f8f3ea90f look for NS records on the SBL also
carl
parents: 29
diff changeset
674 snprintf(buf, sizeof(buf), "ns %s found at %s", host, adr);
fc7f8f3ea90f look for NS records on the SBL also
carl
parents: 29
diff changeset
675 }
fc7f8f3ea90f look for NS records on the SBL also
carl
parents: 29
diff changeset
676 else {
fc7f8f3ea90f look for NS records on the SBL also
carl
parents: 29
diff changeset
677 snprintf(buf, sizeof(buf), "ns %s not found", host);
fc7f8f3ea90f look for NS records on the SBL also
carl
parents: 29
diff changeset
678 }
41
d95af8129dfa updates for 3.2, changing file layout, add queueid to messages
carl
parents: 40
diff changeset
679 my_syslog(&priv, buf);
34
fc7f8f3ea90f look for NS records on the SBL also
carl
parents: 29
diff changeset
680 }
fc7f8f3ea90f look for NS records on the SBL also
carl
parents: 29
diff changeset
681 if (ip) {
44
6b79046b18c2 changes for 3.2
carl
parents: 43
diff changeset
682 int_set::iterator i = ips.find(ip);
6b79046b18c2 changes for 3.2
carl
parents: 43
diff changeset
683 if (i == ips.end()) {
6b79046b18c2 changes for 3.2
carl
parents: 43
diff changeset
684 ips.insert(ip);
6b79046b18c2 changes for 3.2
carl
parents: 43
diff changeset
685 status st = check_single(ip, dc.content_suffix);
6b79046b18c2 changes for 3.2
carl
parents: 43
diff changeset
686 if (st == reject) {
53
c2371bb6cf84 3.5 - better error message when rejecting based on ns records on the sbl
carl
parents: 48
diff changeset
687 string_map::iterator j = nameservers.ns_host.find(host);
c2371bb6cf84 3.5 - better error message when rejecting based on ns records on the sbl
carl
parents: 48
diff changeset
688 if (j != nameservers.ns_host.end()) {
c2371bb6cf84 3.5 - better error message when rejecting based on ns records on the sbl
carl
parents: 48
diff changeset
689 char *refer = (*j).second;
c2371bb6cf84 3.5 - better error message when rejecting based on ns records on the sbl
carl
parents: 48
diff changeset
690 char buf[1000];
c2371bb6cf84 3.5 - better error message when rejecting based on ns records on the sbl
carl
parents: 48
diff changeset
691 snprintf(buf, sizeof(buf), "%s with nameserver %s", refer, host);
c2371bb6cf84 3.5 - better error message when rejecting based on ns records on the sbl
carl
parents: 48
diff changeset
692 host = register_string(priv.memory->hosts, buf); // put a copy into priv.memory->hosts, and return that reference
c2371bb6cf84 3.5 - better error message when rejecting based on ns records on the sbl
carl
parents: 48
diff changeset
693 }
c2371bb6cf84 3.5 - better error message when rejecting based on ns records on the sbl
carl
parents: 48
diff changeset
694 else {
c2371bb6cf84 3.5 - better error message when rejecting based on ns records on the sbl
carl
parents: 48
diff changeset
695 host = register_string(priv.memory->hosts, host); // put a copy into priv.memory->hosts, and return that reference
c2371bb6cf84 3.5 - better error message when rejecting based on ns records on the sbl
carl
parents: 48
diff changeset
696 }
44
6b79046b18c2 changes for 3.2
carl
parents: 43
diff changeset
697 discard(nameservers);
6b79046b18c2 changes for 3.2
carl
parents: 43
diff changeset
698 return st;
6b79046b18c2 changes for 3.2
carl
parents: 43
diff changeset
699 }
34
fc7f8f3ea90f look for NS records on the SBL also
carl
parents: 29
diff changeset
700 }
fc7f8f3ea90f look for NS records on the SBL also
carl
parents: 29
diff changeset
701 }
fc7f8f3ea90f look for NS records on the SBL also
carl
parents: 29
diff changeset
702 }
fc7f8f3ea90f look for NS records on the SBL also
carl
parents: 29
diff changeset
703 discard(nameservers);
24
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
704 host = NULL;
26
fdae7ab30cfc allow normal and terminator versions of tags
carl
parents: 24
diff changeset
705 int bin = priv.memory->binary_tags;
24
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
706 int bad = priv.memory->bad_html_tags;
34
fc7f8f3ea90f look for NS records on the SBL also
carl
parents: 29
diff changeset
707 lim = priv.pc->tag_limit;
41
d95af8129dfa updates for 3.2, changing file layout, add queueid to messages
carl
parents: 40
diff changeset
708 if (3*bin > bad) return oksofar; // probably .zip or .tar.gz with random content
27
43a4f6b3e668 add configurable host name limit and bad html tag limits.
carl
parents: 26
diff changeset
709 if ((bad > lim) && (lim > 0)) return reject_tag;
9
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
710 return oksofar;
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
711 }
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
712
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
713
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
714 ////////////////////////////////////////////////
0
96a9758165cd Initial revision
carl
parents:
diff changeset
715 // start of sendmail milter interfaces
96a9758165cd Initial revision
carl
parents:
diff changeset
716 //
96a9758165cd Initial revision
carl
parents:
diff changeset
717 sfsistat mlfi_connect(SMFICTX *ctx, char *hostname, _SOCK_ADDR *hostaddr)
96a9758165cd Initial revision
carl
parents:
diff changeset
718 {
96a9758165cd Initial revision
carl
parents:
diff changeset
719 // allocate some private memory
96a9758165cd Initial revision
carl
parents:
diff changeset
720 mlfiPriv *priv = new mlfiPriv;
96a9758165cd Initial revision
carl
parents:
diff changeset
721 if (hostaddr->sa_family == AF_INET) {
96a9758165cd Initial revision
carl
parents:
diff changeset
722 priv->ip = ((struct sockaddr_in *)hostaddr)->sin_addr.s_addr;
96a9758165cd Initial revision
carl
parents:
diff changeset
723 }
96a9758165cd Initial revision
carl
parents:
diff changeset
724
96a9758165cd Initial revision
carl
parents:
diff changeset
725 // save the private data
96a9758165cd Initial revision
carl
parents:
diff changeset
726 smfi_setpriv(ctx, (void*)priv);
96a9758165cd Initial revision
carl
parents:
diff changeset
727
96a9758165cd Initial revision
carl
parents:
diff changeset
728 // continue processing
96a9758165cd Initial revision
carl
parents:
diff changeset
729 return SMFIS_CONTINUE;
96a9758165cd Initial revision
carl
parents:
diff changeset
730 }
96a9758165cd Initial revision
carl
parents:
diff changeset
731
96a9758165cd Initial revision
carl
parents:
diff changeset
732 sfsistat mlfi_envfrom(SMFICTX *ctx, char **from)
96a9758165cd Initial revision
carl
parents:
diff changeset
733 {
96a9758165cd Initial revision
carl
parents:
diff changeset
734 mlfiPriv &priv = *MLFIPRIV;
96a9758165cd Initial revision
carl
parents:
diff changeset
735 priv.mailaddr = strdup(from[0]);
96a9758165cd Initial revision
carl
parents:
diff changeset
736 priv.authenticated = (smfi_getsymval(ctx, "{auth_authen}") != NULL);
96a9758165cd Initial revision
carl
parents:
diff changeset
737 return SMFIS_CONTINUE;
96a9758165cd Initial revision
carl
parents:
diff changeset
738 }
96a9758165cd Initial revision
carl
parents:
diff changeset
739
96a9758165cd Initial revision
carl
parents:
diff changeset
740 sfsistat mlfi_envrcpt(SMFICTX *ctx, char **rcpt)
96a9758165cd Initial revision
carl
parents:
diff changeset
741 {
96a9758165cd Initial revision
carl
parents:
diff changeset
742 DNSBLP rejectlist = NULL; // list that caused the reject
96a9758165cd Initial revision
carl
parents:
diff changeset
743 status st = oksofar;
96a9758165cd Initial revision
carl
parents:
diff changeset
744 mlfiPriv &priv = *MLFIPRIV;
96a9758165cd Initial revision
carl
parents:
diff changeset
745 CONFIG &dc = *priv.pc;
42
afcf403709ef updates for 3.2, try to drop root privileges
carl
parents: 41
diff changeset
746 if (!priv.queueid) priv.queueid = strdup(smfi_getsymval(ctx, "i"));
0
96a9758165cd Initial revision
carl
parents:
diff changeset
747 char *rcptaddr = rcpt[0];
96a9758165cd Initial revision
carl
parents:
diff changeset
748 char *dnsname = lookup(rcptaddr, dc.env_to_dnsbll);
96a9758165cd Initial revision
carl
parents:
diff changeset
749 char *fromname = lookup(rcptaddr, dc.env_to_chkfrom);
96a9758165cd Initial revision
carl
parents:
diff changeset
750 if ((strcmp(dnsname, BLACK) == 0) ||
96a9758165cd Initial revision
carl
parents:
diff changeset
751 (strcmp(fromname, BLACK) == 0)) {
96a9758165cd Initial revision
carl
parents:
diff changeset
752 st = black; // two options to blacklist this recipient
96a9758165cd Initial revision
carl
parents:
diff changeset
753 }
96a9758165cd Initial revision
carl
parents:
diff changeset
754 else if (strcmp(fromname, WHITE) == 0) {
96a9758165cd Initial revision
carl
parents:
diff changeset
755 st = white;
96a9758165cd Initial revision
carl
parents:
diff changeset
756 }
96a9758165cd Initial revision
carl
parents:
diff changeset
757 else {
96a9758165cd Initial revision
carl
parents:
diff changeset
758 // check an env_from map
96a9758165cd Initial revision
carl
parents:
diff changeset
759 string_map *sm = find_from_map(dc, fromname);
96a9758165cd Initial revision
carl
parents:
diff changeset
760 if (sm != NULL) {
96a9758165cd Initial revision
carl
parents:
diff changeset
761 fromname = lookup(priv.mailaddr, *sm); // returns default if name not in map
96a9758165cd Initial revision
carl
parents:
diff changeset
762 if (strcmp(fromname, BLACK) == 0) {
96a9758165cd Initial revision
carl
parents:
diff changeset
763 st = black; // blacklist this envelope from value
96a9758165cd Initial revision
carl
parents:
diff changeset
764 }
96a9758165cd Initial revision
carl
parents:
diff changeset
765 if (strcmp(fromname, WHITE) == 0) {
96a9758165cd Initial revision
carl
parents:
diff changeset
766 st = white; // blacklist this envelope from value
96a9758165cd Initial revision
carl
parents:
diff changeset
767 }
96a9758165cd Initial revision
carl
parents:
diff changeset
768 }
96a9758165cd Initial revision
carl
parents:
diff changeset
769 }
96a9758165cd Initial revision
carl
parents:
diff changeset
770 if ((st == oksofar) && (strcmp(dnsname, WHITE) != 0)) {
96a9758165cd Initial revision
carl
parents:
diff changeset
771 // check dns lists
96a9758165cd Initial revision
carl
parents:
diff changeset
772 st = check_dnsbl(priv, find_dnsbll(dc, dnsname), rejectlist);
96a9758165cd Initial revision
carl
parents:
diff changeset
773 }
96a9758165cd Initial revision
carl
parents:
diff changeset
774
96a9758165cd Initial revision
carl
parents:
diff changeset
775 if (st == reject) {
96a9758165cd Initial revision
carl
parents:
diff changeset
776 // reject the recipient based on some dnsbl
96a9758165cd Initial revision
carl
parents:
diff changeset
777 char adr[sizeof "255.255.255.255"];
96a9758165cd Initial revision
carl
parents:
diff changeset
778 adr[0] = '\0';
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
779 inet_ntop(AF_INET, (const u_char *)&priv.ip, adr, sizeof(adr));
0
96a9758165cd Initial revision
carl
parents:
diff changeset
780 char buf[2000];
96a9758165cd Initial revision
carl
parents:
diff changeset
781 snprintf(buf, sizeof(buf), rejectlist->message, adr, adr);
96a9758165cd Initial revision
carl
parents:
diff changeset
782 smfi_setreply(ctx, "550", "5.7.1", buf);
96a9758165cd Initial revision
carl
parents:
diff changeset
783 return SMFIS_REJECT;
96a9758165cd Initial revision
carl
parents:
diff changeset
784 }
96a9758165cd Initial revision
carl
parents:
diff changeset
785 else if (st == black) {
96a9758165cd Initial revision
carl
parents:
diff changeset
786 // reject the recipient based on blacklisting either from or to
96a9758165cd Initial revision
carl
parents:
diff changeset
787 smfi_setreply(ctx, "550", "5.7.1", "no such user");
96a9758165cd Initial revision
carl
parents:
diff changeset
788 return SMFIS_REJECT;
96a9758165cd Initial revision
carl
parents:
diff changeset
789 }
96a9758165cd Initial revision
carl
parents:
diff changeset
790 else {
96a9758165cd Initial revision
carl
parents:
diff changeset
791 // accept the recipient
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
792 if (st == oksofar) {
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
793 // but remember the non-whites
12
6ac6d6b822ce fix memory leak with duplicate url host names,
carl
parents: 11
diff changeset
794 register_string(priv.non_whites, rcptaddr);
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
795 priv.only_whites = false;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
796 }
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
797 if (st == white) {
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
798 priv.have_whites = true;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
799 }
0
96a9758165cd Initial revision
carl
parents:
diff changeset
800 return SMFIS_CONTINUE;
96a9758165cd Initial revision
carl
parents:
diff changeset
801 }
96a9758165cd Initial revision
carl
parents:
diff changeset
802 }
96a9758165cd Initial revision
carl
parents:
diff changeset
803
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
804 sfsistat mlfi_body(SMFICTX *ctx, u_char *data, size_t len)
0
96a9758165cd Initial revision
carl
parents:
diff changeset
805 {
96a9758165cd Initial revision
carl
parents:
diff changeset
806 mlfiPriv &priv = *MLFIPRIV;
55
44babba1a9b9 updates for 3.6, better documentation on removing content filtering, missing some files in cvs
carl
parents: 53
diff changeset
807 if (priv.authenticated) return SMFIS_CONTINUE;
44babba1a9b9 updates for 3.6, better documentation on removing content filtering, missing some files in cvs
carl
parents: 53
diff changeset
808 if (priv.only_whites) return SMFIS_CONTINUE;
44babba1a9b9 updates for 3.6, better documentation on removing content filtering, missing some files in cvs
carl
parents: 53
diff changeset
809 if (!priv.pc->content_suffix) return SMFIS_CONTINUE;
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
810 priv.scanner->scan(data, len);
11
2c206836b4cc integration work on url scanner
carl
parents: 9
diff changeset
811 return SMFIS_CONTINUE;
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
812 }
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
813
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
814 sfsistat mlfi_eom(SMFICTX *ctx)
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
815 {
27
43a4f6b3e668 add configurable host name limit and bad html tag limits.
carl
parents: 26
diff changeset
816 sfsistat rc;
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
817 mlfiPriv &priv = *MLFIPRIV;
27
43a4f6b3e668 add configurable host name limit and bad html tag limits.
carl
parents: 26
diff changeset
818 char *host = NULL;
43a4f6b3e668 add configurable host name limit and bad html tag limits.
carl
parents: 26
diff changeset
819 int ip;
43a4f6b3e668 add configurable host name limit and bad html tag limits.
carl
parents: 26
diff changeset
820 status st;
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
821 // process end of message
55
44babba1a9b9 updates for 3.6, better documentation on removing content filtering, missing some files in cvs
carl
parents: 53
diff changeset
822 if (priv.authenticated ||
44babba1a9b9 updates for 3.6, better documentation on removing content filtering, missing some files in cvs
carl
parents: 53
diff changeset
823 priv.only_whites ||
44babba1a9b9 updates for 3.6, better documentation on removing content filtering, missing some files in cvs
carl
parents: 53
diff changeset
824 (!priv.pc->content_suffix) ||
27
43a4f6b3e668 add configurable host name limit and bad html tag limits.
carl
parents: 26
diff changeset
825 ((st=check_hosts(priv, host, ip)) == oksofar)) rc = SMFIS_CONTINUE;
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
826 else {
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
827 if (!priv.have_whites) {
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
828 // can reject the entire message
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
829 char buf[2000];
27
43a4f6b3e668 add configurable host name limit and bad html tag limits.
carl
parents: 26
diff changeset
830 if (st == reject_tag) {
43a4f6b3e668 add configurable host name limit and bad html tag limits.
carl
parents: 26
diff changeset
831 // rejected due to excessive bad html tags
43a4f6b3e668 add configurable host name limit and bad html tag limits.
carl
parents: 26
diff changeset
832 snprintf(buf, sizeof(buf), priv.pc->tag_limit_message);
43a4f6b3e668 add configurable host name limit and bad html tag limits.
carl
parents: 26
diff changeset
833 }
43a4f6b3e668 add configurable host name limit and bad html tag limits.
carl
parents: 26
diff changeset
834 else if (st == reject_host) {
43a4f6b3e668 add configurable host name limit and bad html tag limits.
carl
parents: 26
diff changeset
835 // rejected due to excessive unique host/urls
43a4f6b3e668 add configurable host name limit and bad html tag limits.
carl
parents: 26
diff changeset
836 snprintf(buf, sizeof(buf), priv.pc->host_limit_message);
24
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
837 }
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
838 else {
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
839 char adr[sizeof "255.255.255.255"];
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
840 adr[0] = '\0';
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
841 inet_ntop(AF_INET, (const u_char *)&ip, adr, sizeof(adr));
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
842 snprintf(buf, sizeof(buf), priv.pc->content_message, host, adr);
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
843 }
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
844 smfi_setreply(ctx, "550", "5.7.1", buf);
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
845 rc = SMFIS_REJECT;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
846 }
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
847 else {
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
848 // need to accept it but remove the recipients that don't want it
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
849 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
850 char *rcpt = *i;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
851 smfi_delrcpt(ctx, rcpt);
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
852 }
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
853 rc = SMFIS_CONTINUE;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
854 }
0
96a9758165cd Initial revision
carl
parents:
diff changeset
855 }
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
856 // reset for a new message on the same connection
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
857 mlfi_abort(ctx);
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
858 return rc;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
859 }
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
860
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
861 sfsistat mlfi_abort(SMFICTX *ctx)
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
862 {
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
863 mlfiPriv &priv = *MLFIPRIV;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
864 priv.reset();
0
96a9758165cd Initial revision
carl
parents:
diff changeset
865 return SMFIS_CONTINUE;
96a9758165cd Initial revision
carl
parents:
diff changeset
866 }
96a9758165cd Initial revision
carl
parents:
diff changeset
867
96a9758165cd Initial revision
carl
parents:
diff changeset
868 sfsistat mlfi_close(SMFICTX *ctx)
96a9758165cd Initial revision
carl
parents:
diff changeset
869 {
96a9758165cd Initial revision
carl
parents:
diff changeset
870 mlfiPriv *priv = MLFIPRIV;
96a9758165cd Initial revision
carl
parents:
diff changeset
871 if (!priv) return SMFIS_CONTINUE;
96a9758165cd Initial revision
carl
parents:
diff changeset
872 delete priv;
96a9758165cd Initial revision
carl
parents:
diff changeset
873 smfi_setpriv(ctx, NULL);
96a9758165cd Initial revision
carl
parents:
diff changeset
874 return SMFIS_CONTINUE;
96a9758165cd Initial revision
carl
parents:
diff changeset
875 }
96a9758165cd Initial revision
carl
parents:
diff changeset
876
96a9758165cd Initial revision
carl
parents:
diff changeset
877 struct smfiDesc smfilter =
96a9758165cd Initial revision
carl
parents:
diff changeset
878 {
96a9758165cd Initial revision
carl
parents:
diff changeset
879 "DNSBL", // filter name
96a9758165cd Initial revision
carl
parents:
diff changeset
880 SMFI_VERSION, // version code -- do not change
96a9758165cd Initial revision
carl
parents:
diff changeset
881 SMFIF_DELRCPT, // flags
96a9758165cd Initial revision
carl
parents:
diff changeset
882 mlfi_connect, // connection info filter
96a9758165cd Initial revision
carl
parents:
diff changeset
883 NULL, // SMTP HELO command filter
96a9758165cd Initial revision
carl
parents:
diff changeset
884 mlfi_envfrom, // envelope sender filter
96a9758165cd Initial revision
carl
parents:
diff changeset
885 mlfi_envrcpt, // envelope recipient filter
96a9758165cd Initial revision
carl
parents:
diff changeset
886 NULL, // header filter
96a9758165cd Initial revision
carl
parents:
diff changeset
887 NULL, // end of header
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
888 mlfi_body, // body block filter
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
889 mlfi_eom, // end of message
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
890 mlfi_abort, // message aborted
0
96a9758165cd Initial revision
carl
parents:
diff changeset
891 mlfi_close, // connection cleanup
96a9758165cd Initial revision
carl
parents:
diff changeset
892 };
96a9758165cd Initial revision
carl
parents:
diff changeset
893
96a9758165cd Initial revision
carl
parents:
diff changeset
894
96a9758165cd Initial revision
carl
parents:
diff changeset
895 static void dumpit(char *name, string_map map);
96a9758165cd Initial revision
carl
parents:
diff changeset
896 static void dumpit(char *name, string_map map) {
9
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
897 fprintf(stdout, "\n");
0
96a9758165cd Initial revision
carl
parents:
diff changeset
898 for (string_map::iterator i=map.begin(); i!=map.end(); i++) {
9
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
899 fprintf(stdout, "%s %s->%s\n", name, (*i).first, (*i).second);
0
96a9758165cd Initial revision
carl
parents:
diff changeset
900 }
96a9758165cd Initial revision
carl
parents:
diff changeset
901 }
96a9758165cd Initial revision
carl
parents:
diff changeset
902
96a9758165cd Initial revision
carl
parents:
diff changeset
903
96a9758165cd Initial revision
carl
parents:
diff changeset
904 static void dumpit(from_map map);
96a9758165cd Initial revision
carl
parents:
diff changeset
905 static void dumpit(from_map map) {
96a9758165cd Initial revision
carl
parents:
diff changeset
906 for (from_map::iterator i=map.begin(); i!=map.end(); i++) {
3
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
907 char buf[2000];
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
908 snprintf(buf, sizeof(buf), "envelope from map for %s", (*i).first);
0
96a9758165cd Initial revision
carl
parents:
diff changeset
909 string_map *sm = (*i).second;
3
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
910 dumpit(buf, *sm);
0
96a9758165cd Initial revision
carl
parents:
diff changeset
911 }
96a9758165cd Initial revision
carl
parents:
diff changeset
912 }
96a9758165cd Initial revision
carl
parents:
diff changeset
913
96a9758165cd Initial revision
carl
parents:
diff changeset
914
3
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
915 static void dumpit(CONFIG &dc);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
916 static void dumpit(CONFIG &dc) {
5
793ac9cc114d updates to use dcc conf files
carl
parents: 4
diff changeset
917 dumpit(dc.env_from);
793ac9cc114d updates to use dcc conf files
carl
parents: 4
diff changeset
918 dumpit("envelope to (dnsbl list)", dc.env_to_dnsbll);
793ac9cc114d updates to use dcc conf files
carl
parents: 4
diff changeset
919 dumpit("envelope to (from map)", dc.env_to_chkfrom);
9
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
920 fprintf(stdout, "\ndnsbls\n");
0
96a9758165cd Initial revision
carl
parents:
diff changeset
921 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
922 fprintf(stdout, "%s %s %s\n", (*i).first, (*i).second->suffix, (*i).second->message);
0
96a9758165cd Initial revision
carl
parents:
diff changeset
923 }
9
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
924 fprintf(stdout, "\ndnsbl_lists\n");
0
96a9758165cd Initial revision
carl
parents:
diff changeset
925 for (dnsbllp_map::iterator i=dc.dnsblls.begin(); i!=dc.dnsblls.end(); i++) {
96a9758165cd Initial revision
carl
parents:
diff changeset
926 char *name = (*i).first;
96a9758165cd Initial revision
carl
parents:
diff changeset
927 DNSBLL &dl = *((*i).second);
9
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
928 fprintf(stdout, "%s", name);
0
96a9758165cd Initial revision
carl
parents:
diff changeset
929 for (DNSBLL::iterator j=dl.begin(); j!=dl.end(); j++) {
96a9758165cd Initial revision
carl
parents:
diff changeset
930 DNSBL &d = **j;
9
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
931 fprintf(stdout, " %s", d.suffix);
0
96a9758165cd Initial revision
carl
parents:
diff changeset
932 }
9
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
933 fprintf(stdout, "\n");
0
96a9758165cd Initial revision
carl
parents:
diff changeset
934 }
9
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
935 if (dc.content_suffix) {
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
936 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
937 }
57
419e00901570 changes to handle 5iantlavalamp.com
carl
parents: 55
diff changeset
938 for (string_set::iterator i=dc.content_host_ignore.begin(); i!=dc.content_host_ignore.end(); i++) {
419e00901570 changes to handle 5iantlavalamp.com
carl
parents: 55
diff changeset
939 fprintf(stdout, "ignore %s\n", (*i));
419e00901570 changes to handle 5iantlavalamp.com
carl
parents: 55
diff changeset
940 }
46
66c66a6ee65f changes for 3.2
carl
parents: 44
diff changeset
941 if (dc.host_limit && !dc.host_random) {
66c66a6ee65f changes for 3.2
carl
parents: 44
diff changeset
942 fprintf(stdout, "\ncontent filtering for host names hard limit %d %s\n", dc.host_limit, dc.host_limit_message);
27
43a4f6b3e668 add configurable host name limit and bad html tag limits.
carl
parents: 26
diff changeset
943 }
46
66c66a6ee65f changes for 3.2
carl
parents: 44
diff changeset
944 if (dc.host_limit && dc.host_random) {
66c66a6ee65f changes for 3.2
carl
parents: 44
diff changeset
945 fprintf(stdout, "\ncontent filtering for host names soft limit %d\n", dc.host_limit);
44
6b79046b18c2 changes for 3.2
carl
parents: 43
diff changeset
946 }
27
43a4f6b3e668 add configurable host name limit and bad html tag limits.
carl
parents: 26
diff changeset
947 if (dc.tag_limit) {
43a4f6b3e668 add configurable host name limit and bad html tag limits.
carl
parents: 26
diff changeset
948 fprintf(stdout, "\ncontent filtering for excessive html tags enabled with limit %d %s\n", dc.tag_limit, dc.tag_limit_message);
24
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
949 }
9
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
950 fprintf(stdout, "\nfiles\n");
3
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
951 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
952 char *f = *i;
9
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
953 fprintf(stdout, "config includes %s\n", f);
3
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
954 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
955 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
956
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
957
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
958 ////////////////////////////////////////////////
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
959 // check for redundant or recursive include files
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
960 //
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
961 static bool ok_to_include(CONFIG &dc, char *fn);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
962 static bool ok_to_include(CONFIG &dc, char *fn) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
963 if (!fn) return false;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
964 bool ok = true;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
965 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
966 char *f = *i;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
967 if (strcmp(f, fn) == 0) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
968 my_syslog("redundant or recursive include file detected");
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
969 ok = false;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
970 break;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
971 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
972 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
973 return ok;
0
96a9758165cd Initial revision
carl
parents:
diff changeset
974 }
96a9758165cd Initial revision
carl
parents:
diff changeset
975
96a9758165cd Initial revision
carl
parents:
diff changeset
976
96a9758165cd Initial revision
carl
parents:
diff changeset
977 ////////////////////////////////////////////////
96a9758165cd Initial revision
carl
parents:
diff changeset
978 // load a single config file
96a9758165cd Initial revision
carl
parents:
diff changeset
979 //
3
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
980 static void load_conf_dcc(CONFIG &dc, char *name, char *fn);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
981 static void load_conf_dcc(CONFIG &dc, char *name, char *fn) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
982 ifstream is(fn);
40
dc3d8d1aa2d2 fix handling of missing include files
carl
parents: 39
diff changeset
983 if (is.fail()) {
dc3d8d1aa2d2 fix handling of missing include files
carl
parents: 39
diff changeset
984 char buf[1000];
dc3d8d1aa2d2 fix handling of missing include files
carl
parents: 39
diff changeset
985 snprintf(buf, sizeof(buf), "include file %s not found", fn);
dc3d8d1aa2d2 fix handling of missing include files
carl
parents: 39
diff changeset
986 my_syslog(buf);
dc3d8d1aa2d2 fix handling of missing include files
carl
parents: 39
diff changeset
987 return;
dc3d8d1aa2d2 fix handling of missing include files
carl
parents: 39
diff changeset
988 }
39
6e9d0b2d0720 fix handling of missing include files
carl
parents: 36
diff changeset
989 dc.config_files.push_back(fn);
6e9d0b2d0720 fix handling of missing include files
carl
parents: 36
diff changeset
990 const int LINE_SIZE = 2000;
3
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
991 char line[LINE_SIZE];
39
6e9d0b2d0720 fix handling of missing include files
carl
parents: 36
diff changeset
992 char *list = BLACK;
3
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
993 char *delim = " \t";
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
994 int curline = 0;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
995 while (!is.eof()) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
996 is.getline(line, LINE_SIZE);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
997 curline++;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
998 int n = strlen(line);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
999 if (!n) continue;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1000 for (int i=0; i<n; i++) line[i] = tolower(line[i]);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1001 if (line[0] == '#') continue;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1002 char *head = line;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1003 if (strspn(line, delim) == 0) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1004 // have a leading ok/many tag to fetch
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1005 char *cmd = strtok(line, delim);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1006 if (strcmp(cmd, MANY) == 0) list = BLACK;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1007 else if (strcmp(cmd, OK) == 0) list = WHITE;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1008 head = cmd + strlen(cmd) + 1;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1009 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1010 char *cmd = strtok(head, delim);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1011 if (!cmd) continue;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1012 if (strcmp(cmd, "env_from") == 0) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1013 char *from = next_token(delim);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1014 if (from) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1015 string_map &fm = really_find_from_map(dc, name);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1016 fm[from] = list;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1017 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1018 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1019 else if (strcmp(cmd, "env_to") == 0) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1020 char *to = next_token(delim);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1021 if (to) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1022 dc.env_to_dnsbll[to] = list;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1023 dc.env_to_chkfrom[to] = list;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1024 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1025 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1026 else if (strcmp(cmd, "substitute") == 0) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1027 char *tag = next_token(delim);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1028 if (tag && (strcmp(tag, "mail_host") == 0)) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1029 char *from = next_token(delim);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1030 if (from) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1031 string_map &fm = really_find_from_map(dc, name);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1032 fm[from] = list;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1033 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1034 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1035 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1036 else if (strcmp(cmd, "include") == 0) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1037 char *fn = next_token(delim);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1038 if (ok_to_include(dc, fn)) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1039 load_conf_dcc(dc, name, fn);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1040 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1041 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1042
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1043 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1044 is.close();
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1045 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1046
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1047
0
96a9758165cd Initial revision
carl
parents:
diff changeset
1048 static void load_conf(CONFIG &dc, char *fn);
96a9758165cd Initial revision
carl
parents:
diff changeset
1049 static void load_conf(CONFIG &dc, char *fn) {
39
6e9d0b2d0720 fix handling of missing include files
carl
parents: 36
diff changeset
1050 ifstream is(fn);
40
dc3d8d1aa2d2 fix handling of missing include files
carl
parents: 39
diff changeset
1051 if (is.fail()) {
dc3d8d1aa2d2 fix handling of missing include files
carl
parents: 39
diff changeset
1052 char buf[1000];
dc3d8d1aa2d2 fix handling of missing include files
carl
parents: 39
diff changeset
1053 snprintf(buf, sizeof(buf), "include file %s not found", fn);
dc3d8d1aa2d2 fix handling of missing include files
carl
parents: 39
diff changeset
1054 my_syslog(buf);
dc3d8d1aa2d2 fix handling of missing include files
carl
parents: 39
diff changeset
1055 return;
dc3d8d1aa2d2 fix handling of missing include files
carl
parents: 39
diff changeset
1056 }
0
96a9758165cd Initial revision
carl
parents:
diff changeset
1057 dc.config_files.push_back(fn);
96a9758165cd Initial revision
carl
parents:
diff changeset
1058 map<char*, int, ltstr> commands;
57
419e00901570 changes to handle 5iantlavalamp.com
carl
parents: 55
diff changeset
1059 enum {dummy, tld, content, ignore, hostlimit, hostslimit, htmllimit, htmltag, dnsbl, dnsbll, envfrom, envto, include, includedcc};
46
66c66a6ee65f changes for 3.2
carl
parents: 44
diff changeset
1060 commands["tld" ] = tld;
66c66a6ee65f changes for 3.2
carl
parents: 44
diff changeset
1061 commands["content" ] = content;
57
419e00901570 changes to handle 5iantlavalamp.com
carl
parents: 55
diff changeset
1062 commands["ignore" ] = ignore;
46
66c66a6ee65f changes for 3.2
carl
parents: 44
diff changeset
1063 commands["host_limit" ] = hostlimit;
66c66a6ee65f changes for 3.2
carl
parents: 44
diff changeset
1064 commands["host_soft_limit"] = hostslimit;
66c66a6ee65f changes for 3.2
carl
parents: 44
diff changeset
1065 commands["html_limit" ] = htmllimit;
66c66a6ee65f changes for 3.2
carl
parents: 44
diff changeset
1066 commands["html_tag" ] = htmltag;
66c66a6ee65f changes for 3.2
carl
parents: 44
diff changeset
1067 commands["dnsbl" ] = dnsbl;
66c66a6ee65f changes for 3.2
carl
parents: 44
diff changeset
1068 commands["dnsbl_list" ] = dnsbll;
66c66a6ee65f changes for 3.2
carl
parents: 44
diff changeset
1069 commands["env_from" ] = envfrom;
66c66a6ee65f changes for 3.2
carl
parents: 44
diff changeset
1070 commands["env_to" ] = envto;
66c66a6ee65f changes for 3.2
carl
parents: 44
diff changeset
1071 commands["include" ] = include;
66c66a6ee65f changes for 3.2
carl
parents: 44
diff changeset
1072 commands["include_dcc" ] = includedcc;
0
96a9758165cd Initial revision
carl
parents:
diff changeset
1073 const int LINE_SIZE = 2000;
96a9758165cd Initial revision
carl
parents:
diff changeset
1074 char line[LINE_SIZE];
96a9758165cd Initial revision
carl
parents:
diff changeset
1075 char orig[LINE_SIZE];
96a9758165cd Initial revision
carl
parents:
diff changeset
1076 char *delim = " \t";
96a9758165cd Initial revision
carl
parents:
diff changeset
1077 int curline = 0;
96a9758165cd Initial revision
carl
parents:
diff changeset
1078 while (!is.eof()) {
96a9758165cd Initial revision
carl
parents:
diff changeset
1079 is.getline(line, LINE_SIZE);
96a9758165cd Initial revision
carl
parents:
diff changeset
1080 snprintf(orig, sizeof(orig), "%s", line);
96a9758165cd Initial revision
carl
parents:
diff changeset
1081 curline++;
96a9758165cd Initial revision
carl
parents:
diff changeset
1082 int n = strlen(line);
96a9758165cd Initial revision
carl
parents:
diff changeset
1083 for (int i=0; i<n; i++) line[i] = tolower(line[i]);
96a9758165cd Initial revision
carl
parents:
diff changeset
1084 char *cmd = strtok(line, delim);
96a9758165cd Initial revision
carl
parents:
diff changeset
1085 if (cmd && (cmd[0] != '#') && (cmd[0] != '\0')) {
96a9758165cd Initial revision
carl
parents:
diff changeset
1086 // have a decent command
96a9758165cd Initial revision
carl
parents:
diff changeset
1087 bool processed = false;
96a9758165cd Initial revision
carl
parents:
diff changeset
1088 switch (commands[cmd]) {
28
33e1e3910506 add configurable list of tlds
carl
parents: 27
diff changeset
1089 case tld: {
29
4dfdf33f1db0 add syslog msg freeing memory, use bare tld names without leading period
carl
parents: 28
diff changeset
1090 char *tld = next_token(delim);
28
33e1e3910506 add configurable list of tlds
carl
parents: 27
diff changeset
1091 if (!tld) break; // no tld value
29
4dfdf33f1db0 add syslog msg freeing memory, use bare tld names without leading period
carl
parents: 28
diff changeset
1092 dc.tlds.insert(tld);
28
33e1e3910506 add configurable list of tlds
carl
parents: 27
diff changeset
1093 processed = true;
33e1e3910506 add configurable list of tlds
carl
parents: 27
diff changeset
1094 } break;
33e1e3910506 add configurable list of tlds
carl
parents: 27
diff changeset
1095
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
1096 case content: {
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
1097 char *suff = strtok(NULL, delim);
24
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
1098 if (!suff) break; // no dns suffix
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
1099 char *msg = suff + strlen(suff);
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
1100 if ((msg - line) >= strlen(orig)) break; // line ended with the dns suffix
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
1101 msg = strchr(msg+1, '\'');
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
1102 if (!msg) break; // no reply message template
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
1103 msg++; // move over the leading '
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
1104 if ((msg - line) >= strlen(orig)) break; // line ended with the leading quote
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
1105 char *last = strchr(msg, '\'');
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
1106 if (!last) break; // no trailing quote
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
1107 *last = '\0'; // make it a null terminator
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
1108 dc.content_suffix = register_string(suff);
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
1109 dc.content_message = register_string(msg);
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
1110 processed = true;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
1111 } break;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
1112
57
419e00901570 changes to handle 5iantlavalamp.com
carl
parents: 55
diff changeset
1113 case ignore: {
419e00901570 changes to handle 5iantlavalamp.com
carl
parents: 55
diff changeset
1114 char *host = next_token(delim);
419e00901570 changes to handle 5iantlavalamp.com
carl
parents: 55
diff changeset
1115 if (!host) break;
419e00901570 changes to handle 5iantlavalamp.com
carl
parents: 55
diff changeset
1116 dc.content_host_ignore.insert(host);
419e00901570 changes to handle 5iantlavalamp.com
carl
parents: 55
diff changeset
1117 processed = true;
419e00901570 changes to handle 5iantlavalamp.com
carl
parents: 55
diff changeset
1118 } break;
419e00901570 changes to handle 5iantlavalamp.com
carl
parents: 55
diff changeset
1119
27
43a4f6b3e668 add configurable host name limit and bad html tag limits.
carl
parents: 26
diff changeset
1120 case hostlimit: {
43a4f6b3e668 add configurable host name limit and bad html tag limits.
carl
parents: 26
diff changeset
1121 char *limit = strtok(NULL, delim);
43a4f6b3e668 add configurable host name limit and bad html tag limits.
carl
parents: 26
diff changeset
1122 if (!limit) break; // no integer limit
43a4f6b3e668 add configurable host name limit and bad html tag limits.
carl
parents: 26
diff changeset
1123 char *msg = limit + strlen(limit);
43a4f6b3e668 add configurable host name limit and bad html tag limits.
carl
parents: 26
diff changeset
1124 if ((msg - line) >= strlen(orig)) break; // line ended with the limit
43a4f6b3e668 add configurable host name limit and bad html tag limits.
carl
parents: 26
diff changeset
1125 msg = strchr(msg+1, '\'');
43a4f6b3e668 add configurable host name limit and bad html tag limits.
carl
parents: 26
diff changeset
1126 if (!msg) break; // no reply message template
43a4f6b3e668 add configurable host name limit and bad html tag limits.
carl
parents: 26
diff changeset
1127 msg++; // move over the leading '
43a4f6b3e668 add configurable host name limit and bad html tag limits.
carl
parents: 26
diff changeset
1128 if ((msg - line) >= strlen(orig)) break; // line ended with the leading quote
43a4f6b3e668 add configurable host name limit and bad html tag limits.
carl
parents: 26
diff changeset
1129 char *last = strchr(msg, '\'');
43a4f6b3e668 add configurable host name limit and bad html tag limits.
carl
parents: 26
diff changeset
1130 if (!last) break; // no trailing quote
43a4f6b3e668 add configurable host name limit and bad html tag limits.
carl
parents: 26
diff changeset
1131 *last = '\0'; // make it a null terminator
43a4f6b3e668 add configurable host name limit and bad html tag limits.
carl
parents: 26
diff changeset
1132 dc.host_limit = atoi(limit);
43a4f6b3e668 add configurable host name limit and bad html tag limits.
carl
parents: 26
diff changeset
1133 dc.host_limit_message = register_string(msg);
46
66c66a6ee65f changes for 3.2
carl
parents: 44
diff changeset
1134 dc.host_random = false;
27
43a4f6b3e668 add configurable host name limit and bad html tag limits.
carl
parents: 26
diff changeset
1135 processed = true;
43a4f6b3e668 add configurable host name limit and bad html tag limits.
carl
parents: 26
diff changeset
1136 } break;
43a4f6b3e668 add configurable host name limit and bad html tag limits.
carl
parents: 26
diff changeset
1137
46
66c66a6ee65f changes for 3.2
carl
parents: 44
diff changeset
1138 case hostslimit: {
66c66a6ee65f changes for 3.2
carl
parents: 44
diff changeset
1139 char *limit = next_token(delim);
66c66a6ee65f changes for 3.2
carl
parents: 44
diff changeset
1140 if (!limit) break; // no integer limit
66c66a6ee65f changes for 3.2
carl
parents: 44
diff changeset
1141 dc.host_limit = atoi(limit);
44
6b79046b18c2 changes for 3.2
carl
parents: 43
diff changeset
1142 dc.host_random = true;
6b79046b18c2 changes for 3.2
carl
parents: 43
diff changeset
1143 processed = true;
6b79046b18c2 changes for 3.2
carl
parents: 43
diff changeset
1144 } break;
6b79046b18c2 changes for 3.2
carl
parents: 43
diff changeset
1145
24
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
1146 case htmllimit: {
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
1147 char *limit = strtok(NULL, delim);
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
1148 if (!limit) break; // no integer limit
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
1149 char *msg = limit + strlen(limit);
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
1150 if ((msg - line) >= strlen(orig)) break; // line ended with the limit
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
1151 msg = strchr(msg+1, '\'');
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
1152 if (!msg) break; // no reply message template
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
1153 msg++; // move over the leading '
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
1154 if ((msg - line) >= strlen(orig)) break; // line ended with the leading quote
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
1155 char *last = strchr(msg, '\'');
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
1156 if (!last) break; // no trailing quote
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
1157 *last = '\0'; // make it a null terminator
27
43a4f6b3e668 add configurable host name limit and bad html tag limits.
carl
parents: 26
diff changeset
1158 dc.tag_limit = atoi(limit);
43a4f6b3e668 add configurable host name limit and bad html tag limits.
carl
parents: 26
diff changeset
1159 dc.tag_limit_message = register_string(msg);
24
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
1160 processed = true;
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
1161 } break;
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
1162
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
1163 case htmltag: {
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
1164 char *tag = next_token(delim);
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
1165 if (!tag) break; // no html tag value
27
43a4f6b3e668 add configurable host name limit and bad html tag limits.
carl
parents: 26
diff changeset
1166 dc.html_tags.insert(tag); // base version
26
fdae7ab30cfc allow normal and terminator versions of tags
carl
parents: 24
diff changeset
1167 char buf[200];
fdae7ab30cfc allow normal and terminator versions of tags
carl
parents: 24
diff changeset
1168 snprintf(buf, sizeof(buf), "/%s", tag);
27
43a4f6b3e668 add configurable host name limit and bad html tag limits.
carl
parents: 26
diff changeset
1169 dc.html_tags.insert(register_string(buf)); // leading /
43a4f6b3e668 add configurable host name limit and bad html tag limits.
carl
parents: 26
diff changeset
1170 snprintf(buf, sizeof(buf), "%s/", tag);
43a4f6b3e668 add configurable host name limit and bad html tag limits.
carl
parents: 26
diff changeset
1171 dc.html_tags.insert(register_string(buf)); // trailing /
24
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
1172 processed = true;
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
1173 } break;
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
1174
0
96a9758165cd Initial revision
carl
parents:
diff changeset
1175 case dnsbl: {
96a9758165cd Initial revision
carl
parents:
diff changeset
1176 // have a new dnsbl to use
96a9758165cd Initial revision
carl
parents:
diff changeset
1177 char *name = next_token(delim);
96a9758165cd Initial revision
carl
parents:
diff changeset
1178 if (!name) break; // no name name
96a9758165cd Initial revision
carl
parents:
diff changeset
1179 if (find_dnsbl(dc, name)) break; // duplicate entry
96a9758165cd Initial revision
carl
parents:
diff changeset
1180 char *suff = strtok(NULL, delim);
96a9758165cd Initial revision
carl
parents:
diff changeset
1181 if (!suff) break; // no dns suffic
96a9758165cd Initial revision
carl
parents:
diff changeset
1182 char *msg = suff + strlen(suff);
96a9758165cd Initial revision
carl
parents:
diff changeset
1183 if ((msg - line) >= strlen(orig)) break; // line ended with the dns suffix
96a9758165cd Initial revision
carl
parents:
diff changeset
1184 msg = strchr(msg+1, '\'');
96a9758165cd Initial revision
carl
parents:
diff changeset
1185 if (!msg) break; // no reply message template
96a9758165cd Initial revision
carl
parents:
diff changeset
1186 msg++; // move over the leading '
96a9758165cd Initial revision
carl
parents:
diff changeset
1187 if ((msg - line) >= strlen(orig)) break; // line ended with the leading quote
96a9758165cd Initial revision
carl
parents:
diff changeset
1188 char *last = strchr(msg, '\'');
96a9758165cd Initial revision
carl
parents:
diff changeset
1189 if (!last) break; // no trailing quote
96a9758165cd Initial revision
carl
parents:
diff changeset
1190 *last = '\0'; // make it a null terminator
96a9758165cd Initial revision
carl
parents:
diff changeset
1191 dc.dnsbls[name] = new DNSBL(register_string(suff), register_string(msg));
96a9758165cd Initial revision
carl
parents:
diff changeset
1192 processed = true;
96a9758165cd Initial revision
carl
parents:
diff changeset
1193 } break;
96a9758165cd Initial revision
carl
parents:
diff changeset
1194
96a9758165cd Initial revision
carl
parents:
diff changeset
1195 case dnsbll: {
96a9758165cd Initial revision
carl
parents:
diff changeset
1196 // define a new combination of dnsbls
96a9758165cd Initial revision
carl
parents:
diff changeset
1197 char *name = next_token(delim);
96a9758165cd Initial revision
carl
parents:
diff changeset
1198 if (!name) break;
96a9758165cd Initial revision
carl
parents:
diff changeset
1199 if (find_dnsbll(dc, name)) break; // duplicate entry
96a9758165cd Initial revision
carl
parents:
diff changeset
1200 char *list = next_token(delim);
96a9758165cd Initial revision
carl
parents:
diff changeset
1201 if (!list || (*list == '\0') || (*list == '#')) break;
96a9758165cd Initial revision
carl
parents:
diff changeset
1202 DNSBLLP d = new DNSBLL;
96a9758165cd Initial revision
carl
parents:
diff changeset
1203 DNSBLP p = find_dnsbl(dc, list);
96a9758165cd Initial revision
carl
parents:
diff changeset
1204 if (p) d->push_back(p);
96a9758165cd Initial revision
carl
parents:
diff changeset
1205 while (true) {
96a9758165cd Initial revision
carl
parents:
diff changeset
1206 list = next_token(delim);
96a9758165cd Initial revision
carl
parents:
diff changeset
1207 if (!list || (*list == '\0') || (*list == '#')) break;
96a9758165cd Initial revision
carl
parents:
diff changeset
1208 DNSBLP p = find_dnsbl(dc, list);
96a9758165cd Initial revision
carl
parents:
diff changeset
1209 if (p) d->push_back(p);
96a9758165cd Initial revision
carl
parents:
diff changeset
1210 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1211 dc.dnsblls[name] = d;
96a9758165cd Initial revision
carl
parents:
diff changeset
1212 processed = true;
96a9758165cd Initial revision
carl
parents:
diff changeset
1213 } break;
96a9758165cd Initial revision
carl
parents:
diff changeset
1214
96a9758165cd Initial revision
carl
parents:
diff changeset
1215 case envfrom: {
96a9758165cd Initial revision
carl
parents:
diff changeset
1216 // add an entry into the named string_map
96a9758165cd Initial revision
carl
parents:
diff changeset
1217 char *name = next_token(delim);
96a9758165cd Initial revision
carl
parents:
diff changeset
1218 if (!name) break;
96a9758165cd Initial revision
carl
parents:
diff changeset
1219 char *from = next_token(delim);
96a9758165cd Initial revision
carl
parents:
diff changeset
1220 if (!from) break;
96a9758165cd Initial revision
carl
parents:
diff changeset
1221 char *list = next_token(delim);
96a9758165cd Initial revision
carl
parents:
diff changeset
1222 if (!list) break;
96a9758165cd Initial revision
carl
parents:
diff changeset
1223 if ((strcmp(list, WHITE) == 0) ||
96a9758165cd Initial revision
carl
parents:
diff changeset
1224 (strcmp(list, BLACK) == 0)) {
96a9758165cd Initial revision
carl
parents:
diff changeset
1225 string_map &fm = really_find_from_map(dc, name);
96a9758165cd Initial revision
carl
parents:
diff changeset
1226 fm[from] = list;
96a9758165cd Initial revision
carl
parents:
diff changeset
1227 processed = true;
96a9758165cd Initial revision
carl
parents:
diff changeset
1228 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1229 else {
96a9758165cd Initial revision
carl
parents:
diff changeset
1230 // list may be the name of a previously defined from_map
96a9758165cd Initial revision
carl
parents:
diff changeset
1231 string_map *m = find_from_map(dc, list);
96a9758165cd Initial revision
carl
parents:
diff changeset
1232 if (m && (strcmp(list,name) != 0)) {
96a9758165cd Initial revision
carl
parents:
diff changeset
1233 string_map &pm = *m;
96a9758165cd Initial revision
carl
parents:
diff changeset
1234 string_map &fm = really_find_from_map(dc, name);
96a9758165cd Initial revision
carl
parents:
diff changeset
1235 fm.insert(pm.begin(), pm.end());
96a9758165cd Initial revision
carl
parents:
diff changeset
1236 processed = true;
96a9758165cd Initial revision
carl
parents:
diff changeset
1237 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1238 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1239 } break;
96a9758165cd Initial revision
carl
parents:
diff changeset
1240
96a9758165cd Initial revision
carl
parents:
diff changeset
1241 case envto: {
96a9758165cd Initial revision
carl
parents:
diff changeset
1242 // define the dnsbl_list and env_from maps to use for this recipient
96a9758165cd Initial revision
carl
parents:
diff changeset
1243 char *to = next_token(delim);
96a9758165cd Initial revision
carl
parents:
diff changeset
1244 if (!to) break;
96a9758165cd Initial revision
carl
parents:
diff changeset
1245 char *list = next_token(delim);
96a9758165cd Initial revision
carl
parents:
diff changeset
1246 if (!list) break;
96a9758165cd Initial revision
carl
parents:
diff changeset
1247 char *from = next_token(delim);
96a9758165cd Initial revision
carl
parents:
diff changeset
1248 if (!from) break;
96a9758165cd Initial revision
carl
parents:
diff changeset
1249 dc.env_to_dnsbll[to] = list;
96a9758165cd Initial revision
carl
parents:
diff changeset
1250 dc.env_to_chkfrom[to] = from;
96a9758165cd Initial revision
carl
parents:
diff changeset
1251 processed = true;
96a9758165cd Initial revision
carl
parents:
diff changeset
1252 } break;
96a9758165cd Initial revision
carl
parents:
diff changeset
1253
96a9758165cd Initial revision
carl
parents:
diff changeset
1254 case include: {
96a9758165cd Initial revision
carl
parents:
diff changeset
1255 char *fn = next_token(delim);
3
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1256 if (ok_to_include(dc, fn)) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1257 load_conf(dc, fn);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1258 processed = true;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1259 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1260 } break;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1261
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1262 case includedcc: {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1263 char *name = next_token(delim);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1264 if (!name) break;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1265 char *fn = next_token(delim);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1266 if (ok_to_include(dc, fn)) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1267 load_conf_dcc(dc, name, fn);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1268 processed = true;
0
96a9758165cd Initial revision
carl
parents:
diff changeset
1269 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1270 } break;
96a9758165cd Initial revision
carl
parents:
diff changeset
1271
96a9758165cd Initial revision
carl
parents:
diff changeset
1272 default: {
96a9758165cd Initial revision
carl
parents:
diff changeset
1273 } break;
96a9758165cd Initial revision
carl
parents:
diff changeset
1274 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1275 if (!processed) {
96a9758165cd Initial revision
carl
parents:
diff changeset
1276 pthread_mutex_lock(&syslog_mutex);
96a9758165cd Initial revision
carl
parents:
diff changeset
1277 openlog("dnsbl", LOG_PID, LOG_MAIL);
96a9758165cd Initial revision
carl
parents:
diff changeset
1278 syslog(LOG_ERR, "ignoring file %s line %d : %s\n", fn, curline, orig);
96a9758165cd Initial revision
carl
parents:
diff changeset
1279 closelog();
96a9758165cd Initial revision
carl
parents:
diff changeset
1280 pthread_mutex_unlock(&syslog_mutex);
96a9758165cd Initial revision
carl
parents:
diff changeset
1281 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1282 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1283 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1284 is.close();
96a9758165cd Initial revision
carl
parents:
diff changeset
1285 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1286
96a9758165cd Initial revision
carl
parents:
diff changeset
1287
96a9758165cd Initial revision
carl
parents:
diff changeset
1288 ////////////////////////////////////////////////
96a9758165cd Initial revision
carl
parents:
diff changeset
1289 // reload the config
96a9758165cd Initial revision
carl
parents:
diff changeset
1290 //
96a9758165cd Initial revision
carl
parents:
diff changeset
1291 static CONFIG* new_conf();
96a9758165cd Initial revision
carl
parents:
diff changeset
1292 static CONFIG* new_conf() {
96a9758165cd Initial revision
carl
parents:
diff changeset
1293 CONFIG *newc = new CONFIG;
29
4dfdf33f1db0 add syslog msg freeing memory, use bare tld names without leading period
carl
parents: 28
diff changeset
1294 pthread_mutex_lock(&config_mutex);
4dfdf33f1db0 add syslog msg freeing memory, use bare tld names without leading period
carl
parents: 28
diff changeset
1295 newc->generation = generation++;
4dfdf33f1db0 add syslog msg freeing memory, use bare tld names without leading period
carl
parents: 28
diff changeset
1296 pthread_mutex_unlock(&config_mutex);
4dfdf33f1db0 add syslog msg freeing memory, use bare tld names without leading period
carl
parents: 28
diff changeset
1297 char buf[200];
4dfdf33f1db0 add syslog msg freeing memory, use bare tld names without leading period
carl
parents: 28
diff changeset
1298 snprintf(buf, sizeof(buf), "loading configuration generation %d", newc->generation);
4dfdf33f1db0 add syslog msg freeing memory, use bare tld names without leading period
carl
parents: 28
diff changeset
1299 my_syslog(buf);
0
96a9758165cd Initial revision
carl
parents:
diff changeset
1300 load_conf(*newc, "dnsbl.conf");
96a9758165cd Initial revision
carl
parents:
diff changeset
1301 newc->load_time = time(NULL);
96a9758165cd Initial revision
carl
parents:
diff changeset
1302 return newc;
96a9758165cd Initial revision
carl
parents:
diff changeset
1303 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1304
96a9758165cd Initial revision
carl
parents:
diff changeset
1305
96a9758165cd Initial revision
carl
parents:
diff changeset
1306 ////////////////////////////////////////////////
96a9758165cd Initial revision
carl
parents:
diff changeset
1307 // thread to watch the old config files for changes
96a9758165cd Initial revision
carl
parents:
diff changeset
1308 // and reload when needed. we also cleanup old
96a9758165cd Initial revision
carl
parents:
diff changeset
1309 // configs whose reference count has gone to zero.
96a9758165cd Initial revision
carl
parents:
diff changeset
1310 //
96a9758165cd Initial revision
carl
parents:
diff changeset
1311 static void* config_loader(void *arg);
96a9758165cd Initial revision
carl
parents:
diff changeset
1312 static void* config_loader(void *arg) {
96a9758165cd Initial revision
carl
parents:
diff changeset
1313 typedef set<CONFIG *> configp_set;
96a9758165cd Initial revision
carl
parents:
diff changeset
1314 configp_set old_configs;
18
041ea016b684 add scanning for bare hostnames
carl
parents: 16
diff changeset
1315 while (loader_run) {
0
96a9758165cd Initial revision
carl
parents:
diff changeset
1316 sleep(180); // look for modifications every 3 minutes
18
041ea016b684 add scanning for bare hostnames
carl
parents: 16
diff changeset
1317 if (!loader_run) break;
0
96a9758165cd Initial revision
carl
parents:
diff changeset
1318 CONFIG &dc = *config;
96a9758165cd Initial revision
carl
parents:
diff changeset
1319 time_t then = dc.load_time;
96a9758165cd Initial revision
carl
parents:
diff changeset
1320 struct stat st;
96a9758165cd Initial revision
carl
parents:
diff changeset
1321 bool reload = false;
96a9758165cd Initial revision
carl
parents:
diff changeset
1322 for (string_list::iterator i=dc.config_files.begin(); i!=dc.config_files.end(); i++) {
96a9758165cd Initial revision
carl
parents:
diff changeset
1323 char *fn = *i;
96a9758165cd Initial revision
carl
parents:
diff changeset
1324 if (stat(fn, &st)) reload = true; // file disappeared
96a9758165cd Initial revision
carl
parents:
diff changeset
1325 else if (st.st_mtime > then) reload = true; // file modified
96a9758165cd Initial revision
carl
parents:
diff changeset
1326 if (reload) break;
96a9758165cd Initial revision
carl
parents:
diff changeset
1327 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1328 if (reload) {
96a9758165cd Initial revision
carl
parents:
diff changeset
1329 CONFIG *newc = new_conf();
96a9758165cd Initial revision
carl
parents:
diff changeset
1330 // replace the global config pointer
96a9758165cd Initial revision
carl
parents:
diff changeset
1331 pthread_mutex_lock(&config_mutex);
96a9758165cd Initial revision
carl
parents:
diff changeset
1332 CONFIG *old = config;
96a9758165cd Initial revision
carl
parents:
diff changeset
1333 config = newc;
96a9758165cd Initial revision
carl
parents:
diff changeset
1334 pthread_mutex_unlock(&config_mutex);
96a9758165cd Initial revision
carl
parents:
diff changeset
1335 if (old) old_configs.insert(old);
96a9758165cd Initial revision
carl
parents:
diff changeset
1336 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1337 // now look for old configs with zero ref counts
96a9758165cd Initial revision
carl
parents:
diff changeset
1338 for (configp_set::iterator i=old_configs.begin(); i!=old_configs.end(); ) {
96a9758165cd Initial revision
carl
parents:
diff changeset
1339 CONFIG *old = *i;
96a9758165cd Initial revision
carl
parents:
diff changeset
1340 if (!old->reference_count) {
29
4dfdf33f1db0 add syslog msg freeing memory, use bare tld names without leading period
carl
parents: 28
diff changeset
1341 char buf[200];
4dfdf33f1db0 add syslog msg freeing memory, use bare tld names without leading period
carl
parents: 28
diff changeset
1342 snprintf(buf, sizeof(buf), "freeing memory for old configuration generation %d", old->generation);
4dfdf33f1db0 add syslog msg freeing memory, use bare tld names without leading period
carl
parents: 28
diff changeset
1343 my_syslog(buf);
0
96a9758165cd Initial revision
carl
parents:
diff changeset
1344 delete old; // destructor does all the work
96a9758165cd Initial revision
carl
parents:
diff changeset
1345 old_configs.erase(i++);
96a9758165cd Initial revision
carl
parents:
diff changeset
1346 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1347 else i++;
96a9758165cd Initial revision
carl
parents:
diff changeset
1348 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1349 }
18
041ea016b684 add scanning for bare hostnames
carl
parents: 16
diff changeset
1350 return NULL;
0
96a9758165cd Initial revision
carl
parents:
diff changeset
1351 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1352
96a9758165cd Initial revision
carl
parents:
diff changeset
1353
96a9758165cd Initial revision
carl
parents:
diff changeset
1354 static void usage(char *prog);
96a9758165cd Initial revision
carl
parents:
diff changeset
1355 static void usage(char *prog)
96a9758165cd Initial revision
carl
parents:
diff changeset
1356 {
16
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
1357 fprintf(stderr, "Usage: %s [-d] [-c] -p socket-addr [-t timeout]\n", prog);
0
96a9758165cd Initial revision
carl
parents:
diff changeset
1358 fprintf(stderr, "where socket-addr is for the connection to sendmail and should be one of\n");
96a9758165cd Initial revision
carl
parents:
diff changeset
1359 fprintf(stderr, " inet:port@local-ip-address\n");
96a9758165cd Initial revision
carl
parents:
diff changeset
1360 fprintf(stderr, " local:local-domain-socket-file-name\n");
9
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
1361 fprintf(stderr, "-c will load and dump the config to stdout\n");
16
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
1362 fprintf(stderr, "-d will add some syslog debug messages\n");
0
96a9758165cd Initial revision
carl
parents:
diff changeset
1363 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1364
96a9758165cd Initial revision
carl
parents:
diff changeset
1365
42
afcf403709ef updates for 3.2, try to drop root privileges
carl
parents: 41
diff changeset
1366
afcf403709ef updates for 3.2, try to drop root privileges
carl
parents: 41
diff changeset
1367 static void setup_socket(char *sock);
afcf403709ef updates for 3.2, try to drop root privileges
carl
parents: 41
diff changeset
1368 static void setup_socket(char *sock) {
afcf403709ef updates for 3.2, try to drop root privileges
carl
parents: 41
diff changeset
1369 unlink(sock);
43
acbe44bbba22 seems to drop root privs ok now
carl
parents: 42
diff changeset
1370 // sockaddr_un addr;
acbe44bbba22 seems to drop root privs ok now
carl
parents: 42
diff changeset
1371 // memset(&addr, '\0', sizeof addr);
acbe44bbba22 seems to drop root privs ok now
carl
parents: 42
diff changeset
1372 // addr.sun_family = AF_UNIX;
acbe44bbba22 seems to drop root privs ok now
carl
parents: 42
diff changeset
1373 // strncpy(addr.sun_path, sock, sizeof(addr.sun_path)-1);
acbe44bbba22 seems to drop root privs ok now
carl
parents: 42
diff changeset
1374 // int s = socket(AF_UNIX, SOCK_STREAM, 0);
acbe44bbba22 seems to drop root privs ok now
carl
parents: 42
diff changeset
1375 // bind(s, (sockaddr*)&addr, sizeof(addr));
acbe44bbba22 seems to drop root privs ok now
carl
parents: 42
diff changeset
1376 // close(s);
42
afcf403709ef updates for 3.2, try to drop root privileges
carl
parents: 41
diff changeset
1377 }
afcf403709ef updates for 3.2, try to drop root privileges
carl
parents: 41
diff changeset
1378
afcf403709ef updates for 3.2, try to drop root privileges
carl
parents: 41
diff changeset
1379
0
96a9758165cd Initial revision
carl
parents:
diff changeset
1380 int main(int argc, char**argv)
96a9758165cd Initial revision
carl
parents:
diff changeset
1381 {
3
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1382 bool check = false;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1383 bool setconn = false;
0
96a9758165cd Initial revision
carl
parents:
diff changeset
1384 int c;
16
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
1385 const char *args = "p:t:hcd";
0
96a9758165cd Initial revision
carl
parents:
diff changeset
1386 extern char *optarg;
96a9758165cd Initial revision
carl
parents:
diff changeset
1387
96a9758165cd Initial revision
carl
parents:
diff changeset
1388 // Process command line options
96a9758165cd Initial revision
carl
parents:
diff changeset
1389 while ((c = getopt(argc, argv, args)) != -1) {
96a9758165cd Initial revision
carl
parents:
diff changeset
1390 switch (c) {
96a9758165cd Initial revision
carl
parents:
diff changeset
1391 case 'p':
96a9758165cd Initial revision
carl
parents:
diff changeset
1392 if (optarg == NULL || *optarg == '\0') {
96a9758165cd Initial revision
carl
parents:
diff changeset
1393 fprintf(stderr, "Illegal conn: %s\n", optarg);
96a9758165cd Initial revision
carl
parents:
diff changeset
1394 exit(EX_USAGE);
96a9758165cd Initial revision
carl
parents:
diff changeset
1395 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1396 if (smfi_setconn(optarg) == MI_FAILURE) {
96a9758165cd Initial revision
carl
parents:
diff changeset
1397 fprintf(stderr, "smfi_setconn failed\n");
96a9758165cd Initial revision
carl
parents:
diff changeset
1398 exit(EX_SOFTWARE);
96a9758165cd Initial revision
carl
parents:
diff changeset
1399 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1400
42
afcf403709ef updates for 3.2, try to drop root privileges
carl
parents: 41
diff changeset
1401 if (strncasecmp(optarg, "unix:", 5) == 0) setup_socket(optarg + 5);
afcf403709ef updates for 3.2, try to drop root privileges
carl
parents: 41
diff changeset
1402 else if (strncasecmp(optarg, "local:", 6) == 0) setup_socket(optarg + 6);
3
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1403 setconn = true;
0
96a9758165cd Initial revision
carl
parents:
diff changeset
1404 break;
96a9758165cd Initial revision
carl
parents:
diff changeset
1405
96a9758165cd Initial revision
carl
parents:
diff changeset
1406 case 't':
96a9758165cd Initial revision
carl
parents:
diff changeset
1407 if (optarg == NULL || *optarg == '\0') {
96a9758165cd Initial revision
carl
parents:
diff changeset
1408 fprintf(stderr, "Illegal timeout: %s\n", optarg);
96a9758165cd Initial revision
carl
parents:
diff changeset
1409 exit(EX_USAGE);
96a9758165cd Initial revision
carl
parents:
diff changeset
1410 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1411 if (smfi_settimeout(atoi(optarg)) == MI_FAILURE) {
96a9758165cd Initial revision
carl
parents:
diff changeset
1412 fprintf(stderr, "smfi_settimeout failed\n");
96a9758165cd Initial revision
carl
parents:
diff changeset
1413 exit(EX_SOFTWARE);
96a9758165cd Initial revision
carl
parents:
diff changeset
1414 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1415 break;
96a9758165cd Initial revision
carl
parents:
diff changeset
1416
3
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1417 case 'c':
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1418 check = true;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1419 break;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1420
16
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
1421 case 'd':
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
1422 debug_syslog = true;
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
1423 break;
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
1424
0
96a9758165cd Initial revision
carl
parents:
diff changeset
1425 case 'h':
96a9758165cd Initial revision
carl
parents:
diff changeset
1426 default:
96a9758165cd Initial revision
carl
parents:
diff changeset
1427 usage(argv[0]);
96a9758165cd Initial revision
carl
parents:
diff changeset
1428 exit(EX_USAGE);
96a9758165cd Initial revision
carl
parents:
diff changeset
1429 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1430 }
5
793ac9cc114d updates to use dcc conf files
carl
parents: 4
diff changeset
1431
793ac9cc114d updates to use dcc conf files
carl
parents: 4
diff changeset
1432 if (check) {
793ac9cc114d updates to use dcc conf files
carl
parents: 4
diff changeset
1433 CONFIG &dc = *new_conf();
793ac9cc114d updates to use dcc conf files
carl
parents: 4
diff changeset
1434 dumpit(dc);
793ac9cc114d updates to use dcc conf files
carl
parents: 4
diff changeset
1435 return 0;
793ac9cc114d updates to use dcc conf files
carl
parents: 4
diff changeset
1436 }
793ac9cc114d updates to use dcc conf files
carl
parents: 4
diff changeset
1437
0
96a9758165cd Initial revision
carl
parents:
diff changeset
1438 if (!setconn) {
96a9758165cd Initial revision
carl
parents:
diff changeset
1439 fprintf(stderr, "%s: Missing required -p argument\n", argv[0]);
96a9758165cd Initial revision
carl
parents:
diff changeset
1440 usage(argv[0]);
96a9758165cd Initial revision
carl
parents:
diff changeset
1441 exit(EX_USAGE);
96a9758165cd Initial revision
carl
parents:
diff changeset
1442 }
5
793ac9cc114d updates to use dcc conf files
carl
parents: 4
diff changeset
1443
0
96a9758165cd Initial revision
carl
parents:
diff changeset
1444 if (smfi_register(smfilter) == MI_FAILURE) {
96a9758165cd Initial revision
carl
parents:
diff changeset
1445 fprintf(stderr, "smfi_register failed\n");
96a9758165cd Initial revision
carl
parents:
diff changeset
1446 exit(EX_UNAVAILABLE);
96a9758165cd Initial revision
carl
parents:
diff changeset
1447 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1448
96a9758165cd Initial revision
carl
parents:
diff changeset
1449 // switch to background mode
96a9758165cd Initial revision
carl
parents:
diff changeset
1450 if (daemon(1,0) < 0) {
96a9758165cd Initial revision
carl
parents:
diff changeset
1451 fprintf(stderr, "daemon() call failed\n");
96a9758165cd Initial revision
carl
parents:
diff changeset
1452 exit(EX_UNAVAILABLE);
96a9758165cd Initial revision
carl
parents:
diff changeset
1453 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1454
96a9758165cd Initial revision
carl
parents:
diff changeset
1455 // write the pid
96a9758165cd Initial revision
carl
parents:
diff changeset
1456 const char *pidpath = "/var/run/dnsbl.pid";
96a9758165cd Initial revision
carl
parents:
diff changeset
1457 unlink(pidpath);
96a9758165cd Initial revision
carl
parents:
diff changeset
1458 FILE *f = fopen(pidpath, "w");
96a9758165cd Initial revision
carl
parents:
diff changeset
1459 if (f) {
22
c21b888cc175 fix restart code, add ifdef for linux pid issues
carl
parents: 18
diff changeset
1460 #ifdef linux
c21b888cc175 fix restart code, add ifdef for linux pid issues
carl
parents: 18
diff changeset
1461 // from a comment in the DCC source code:
c21b888cc175 fix restart code, add ifdef for linux pid issues
carl
parents: 18
diff changeset
1462 // Linux threads are broken. Signals given the
c21b888cc175 fix restart code, add ifdef for linux pid issues
carl
parents: 18
diff changeset
1463 // original process are delivered to only the
c21b888cc175 fix restart code, add ifdef for linux pid issues
carl
parents: 18
diff changeset
1464 // thread that happens to have that PID. The
c21b888cc175 fix restart code, add ifdef for linux pid issues
carl
parents: 18
diff changeset
1465 // sendmail libmilter thread that needs to hear
c21b888cc175 fix restart code, add ifdef for linux pid issues
carl
parents: 18
diff changeset
1466 // SIGINT and other signals does not, and that breaks
c21b888cc175 fix restart code, add ifdef for linux pid issues
carl
parents: 18
diff changeset
1467 // scripts that need to stop milters.
c21b888cc175 fix restart code, add ifdef for linux pid issues
carl
parents: 18
diff changeset
1468 // However, signaling the process group works.
0
96a9758165cd Initial revision
carl
parents:
diff changeset
1469 fprintf(f, "-%d\n", (u_int)getpgrp());
22
c21b888cc175 fix restart code, add ifdef for linux pid issues
carl
parents: 18
diff changeset
1470 #else
c21b888cc175 fix restart code, add ifdef for linux pid issues
carl
parents: 18
diff changeset
1471 fprintf(f, "%d\n", (u_int)getpid());
c21b888cc175 fix restart code, add ifdef for linux pid issues
carl
parents: 18
diff changeset
1472 #endif
0
96a9758165cd Initial revision
carl
parents:
diff changeset
1473 fclose(f);
96a9758165cd Initial revision
carl
parents:
diff changeset
1474 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1475
42
afcf403709ef updates for 3.2, try to drop root privileges
carl
parents: 41
diff changeset
1476 // drop root privs
afcf403709ef updates for 3.2, try to drop root privileges
carl
parents: 41
diff changeset
1477 struct passwd *pw = getpwnam("dnsbl");
afcf403709ef updates for 3.2, try to drop root privileges
carl
parents: 41
diff changeset
1478 if (pw) {
48
5ef10dc14457 properly drop root privs
carl
parents: 46
diff changeset
1479 if (setgid(pw->pw_gid) == -1) {
5ef10dc14457 properly drop root privs
carl
parents: 46
diff changeset
1480 my_syslog("failed to switch to group dnsbl");
5ef10dc14457 properly drop root privs
carl
parents: 46
diff changeset
1481 }
42
afcf403709ef updates for 3.2, try to drop root privileges
carl
parents: 41
diff changeset
1482 if (setuid(pw->pw_uid) == -1) {
afcf403709ef updates for 3.2, try to drop root privileges
carl
parents: 41
diff changeset
1483 my_syslog("failed to switch to user dnsbl");
afcf403709ef updates for 3.2, try to drop root privileges
carl
parents: 41
diff changeset
1484 }
afcf403709ef updates for 3.2, try to drop root privileges
carl
parents: 41
diff changeset
1485 }
afcf403709ef updates for 3.2, try to drop root privileges
carl
parents: 41
diff changeset
1486
48
5ef10dc14457 properly drop root privs
carl
parents: 46
diff changeset
1487 // initialize the thread sync objects
5ef10dc14457 properly drop root privs
carl
parents: 46
diff changeset
1488 pthread_mutex_init(&config_mutex, 0);
5ef10dc14457 properly drop root privs
carl
parents: 46
diff changeset
1489 pthread_mutex_init(&syslog_mutex, 0);
5ef10dc14457 properly drop root privs
carl
parents: 46
diff changeset
1490 pthread_mutex_init(&resolve_mutex, 0);
5ef10dc14457 properly drop root privs
carl
parents: 46
diff changeset
1491
5ef10dc14457 properly drop root privs
carl
parents: 46
diff changeset
1492 // load the initial config
5ef10dc14457 properly drop root privs
carl
parents: 46
diff changeset
1493 config = new_conf();
5ef10dc14457 properly drop root privs
carl
parents: 46
diff changeset
1494
5ef10dc14457 properly drop root privs
carl
parents: 46
diff changeset
1495 // only create threads after the fork() in daemon
5ef10dc14457 properly drop root privs
carl
parents: 46
diff changeset
1496 pthread_t tid;
5ef10dc14457 properly drop root privs
carl
parents: 46
diff changeset
1497 if (pthread_create(&tid, 0, config_loader, 0))
5ef10dc14457 properly drop root privs
carl
parents: 46
diff changeset
1498 my_syslog("failed to create config loader thread");
5ef10dc14457 properly drop root privs
carl
parents: 46
diff changeset
1499 if (pthread_detach(tid))
5ef10dc14457 properly drop root privs
carl
parents: 46
diff changeset
1500 my_syslog("failed to detach config loader thread");
5ef10dc14457 properly drop root privs
carl
parents: 46
diff changeset
1501
18
041ea016b684 add scanning for bare hostnames
carl
parents: 16
diff changeset
1502 time_t starting = time(NULL);
041ea016b684 add scanning for bare hostnames
carl
parents: 16
diff changeset
1503 int rc = smfi_main();
22
c21b888cc175 fix restart code, add ifdef for linux pid issues
carl
parents: 18
diff changeset
1504 if ((rc != MI_SUCCESS) && (time(NULL) > starting+5*60)) {
18
041ea016b684 add scanning for bare hostnames
carl
parents: 16
diff changeset
1505 my_syslog("trying to restart after smfi_main()");
041ea016b684 add scanning for bare hostnames
carl
parents: 16
diff changeset
1506 loader_run = false; // eventually the config loader thread will terminate
041ea016b684 add scanning for bare hostnames
carl
parents: 16
diff changeset
1507 execvp(argv[0], argv);
041ea016b684 add scanning for bare hostnames
carl
parents: 16
diff changeset
1508 }
041ea016b684 add scanning for bare hostnames
carl
parents: 16
diff changeset
1509 exit((rc == MI_SUCCESS) ? 0 : EX_UNAVAILABLE);
0
96a9758165cd Initial revision
carl
parents:
diff changeset
1510 }
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
1511