annotate src/dnsbl.cpp @ 24:2e23b7184d2b

start coding for bad html tag detection
author carl
date Wed, 19 May 2004 21:40:50 -0700
parents 06de5ab6a232
children fdae7ab30cfc
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
0
96a9758165cd Initial revision
carl
parents:
diff changeset
1 /*
96a9758165cd Initial revision
carl
parents:
diff changeset
2
96a9758165cd Initial revision
carl
parents:
diff changeset
3 Copyright (c) 2004 Carl Byington - 510 Software Group, released under
96a9758165cd Initial revision
carl
parents:
diff changeset
4 the GPL version 2 or any later version at your choice available at
96a9758165cd Initial revision
carl
parents:
diff changeset
5 http://www.fsf.org/licenses/gpl.txt
96a9758165cd Initial revision
carl
parents:
diff changeset
6
96a9758165cd Initial revision
carl
parents:
diff changeset
7 Based on a sample milter Copyright (c) 2000-2003 Sendmail, Inc. and its
96a9758165cd Initial revision
carl
parents:
diff changeset
8 suppliers. Inspired by the DCC by Rhyolite Software
96a9758165cd Initial revision
carl
parents:
diff changeset
9
96a9758165cd Initial revision
carl
parents:
diff changeset
10 -p port The port through which the MTA will connect to this milter.
96a9758165cd Initial revision
carl
parents:
diff changeset
11 -t sec The timeout value.
9
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
12 -c Check the config, and print a copy to stdout. Don't start the
4
15a7e942adec updates to use dcc conf files
carl
parents: 3
diff changeset
13 milter or do anything with the socket.
16
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
14 -d Add debug syslog entries
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
15
0
96a9758165cd Initial revision
carl
parents:
diff changeset
16
13
2752e512fd32 finish documentation
carl
parents: 12
diff changeset
17 TODO:
2752e512fd32 finish documentation
carl
parents: 12
diff changeset
18 1) Add config for max_recipients for each mail domain. Recipients in
2752e512fd32 finish documentation
carl
parents: 12
diff changeset
19 excess of that limit will be rejected, and the entire data will be
2752e512fd32 finish documentation
carl
parents: 12
diff changeset
20 rejected if it is sent.
2752e512fd32 finish documentation
carl
parents: 12
diff changeset
21
2752e512fd32 finish documentation
carl
parents: 12
diff changeset
22 2) Add config for poison addresses. If any recipient is poison, all
2752e512fd32 finish documentation
carl
parents: 12
diff changeset
23 recipients are rejected even if they would be whitelisted, and the
2752e512fd32 finish documentation
carl
parents: 12
diff changeset
24 data is rejected if sent.
2752e512fd32 finish documentation
carl
parents: 12
diff changeset
25
0
96a9758165cd Initial revision
carl
parents:
diff changeset
26 */
96a9758165cd Initial revision
carl
parents:
diff changeset
27
96a9758165cd Initial revision
carl
parents:
diff changeset
28
96a9758165cd Initial revision
carl
parents:
diff changeset
29 // from sendmail sample
96a9758165cd Initial revision
carl
parents:
diff changeset
30 #include <sys/types.h>
96a9758165cd Initial revision
carl
parents:
diff changeset
31 #include <sys/stat.h>
96a9758165cd Initial revision
carl
parents:
diff changeset
32 #include <errno.h>
96a9758165cd Initial revision
carl
parents:
diff changeset
33 #include <sysexits.h>
96a9758165cd Initial revision
carl
parents:
diff changeset
34 #include <unistd.h>
96a9758165cd Initial revision
carl
parents:
diff changeset
35
96a9758165cd Initial revision
carl
parents:
diff changeset
36 // needed for socket io
96a9758165cd Initial revision
carl
parents:
diff changeset
37 #include <sys/ioctl.h>
96a9758165cd Initial revision
carl
parents:
diff changeset
38 #include <net/if.h>
96a9758165cd Initial revision
carl
parents:
diff changeset
39 #include <arpa/inet.h>
96a9758165cd Initial revision
carl
parents:
diff changeset
40 #include <netinet/in.h>
96a9758165cd Initial revision
carl
parents:
diff changeset
41 #include <netinet/tcp.h>
96a9758165cd Initial revision
carl
parents:
diff changeset
42 #include <netdb.h>
96a9758165cd Initial revision
carl
parents:
diff changeset
43 #include <sys/socket.h>
96a9758165cd Initial revision
carl
parents:
diff changeset
44
96a9758165cd Initial revision
carl
parents:
diff changeset
45 // needed for thread
96a9758165cd Initial revision
carl
parents:
diff changeset
46 #include <pthread.h>
96a9758165cd Initial revision
carl
parents:
diff changeset
47
96a9758165cd Initial revision
carl
parents:
diff changeset
48 // needed for std c++ collections
96a9758165cd Initial revision
carl
parents:
diff changeset
49 #include <set>
96a9758165cd Initial revision
carl
parents:
diff changeset
50 #include <map>
96a9758165cd Initial revision
carl
parents:
diff changeset
51 #include <list>
96a9758165cd Initial revision
carl
parents:
diff changeset
52
96a9758165cd Initial revision
carl
parents:
diff changeset
53 // for the dns resolver
96a9758165cd Initial revision
carl
parents:
diff changeset
54 #include <netinet/in.h>
96a9758165cd Initial revision
carl
parents:
diff changeset
55 #include <arpa/nameser.h>
96a9758165cd Initial revision
carl
parents:
diff changeset
56 #include <resolv.h>
96a9758165cd Initial revision
carl
parents:
diff changeset
57
96a9758165cd Initial revision
carl
parents:
diff changeset
58 // misc stuff needed here
96a9758165cd Initial revision
carl
parents:
diff changeset
59 #include <ctype.h>
96a9758165cd Initial revision
carl
parents:
diff changeset
60 #include <fstream>
96a9758165cd Initial revision
carl
parents:
diff changeset
61 #include <syslog.h>
96a9758165cd Initial revision
carl
parents:
diff changeset
62
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
63 static char* dnsbl_version="$Id$";
0
96a9758165cd Initial revision
carl
parents:
diff changeset
64
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
65 #define DEFAULT "default"
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
66 #define WHITE "white"
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
67 #define BLACK "black"
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
68 #define OK "ok"
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
69 #define MANY "many"
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
70
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
71 enum status {oksofar, // not rejected yet
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
72 white, // whitelisted by envelope from
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
73 black, // blacklisted by envelope from or to
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
74 reject}; // rejected by a dns list
1
bd0b1a153f67 no message
carl
parents: 0
diff changeset
75
0
96a9758165cd Initial revision
carl
parents:
diff changeset
76 using namespace std;
96a9758165cd Initial revision
carl
parents:
diff changeset
77
96a9758165cd Initial revision
carl
parents:
diff changeset
78 extern "C" {
96a9758165cd Initial revision
carl
parents:
diff changeset
79 #include "libmilter/mfapi.h"
96a9758165cd Initial revision
carl
parents:
diff changeset
80 sfsistat mlfi_connect(SMFICTX *ctx, char *hostname, _SOCK_ADDR *hostaddr);
96a9758165cd Initial revision
carl
parents:
diff changeset
81 sfsistat mlfi_envfrom(SMFICTX *ctx, char **argv);
96a9758165cd Initial revision
carl
parents:
diff changeset
82 sfsistat mlfi_envrcpt(SMFICTX *ctx, char **argv);
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
83 sfsistat mlfi_body(SMFICTX *ctx, u_char *data, size_t len);
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
84 sfsistat mlfi_eom(SMFICTX *ctx);
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
85 sfsistat mlfi_abort(SMFICTX *ctx);
0
96a9758165cd Initial revision
carl
parents:
diff changeset
86 sfsistat mlfi_close(SMFICTX *ctx);
96a9758165cd Initial revision
carl
parents:
diff changeset
87 }
96a9758165cd Initial revision
carl
parents:
diff changeset
88
96a9758165cd Initial revision
carl
parents:
diff changeset
89 struct ltstr {
96a9758165cd Initial revision
carl
parents:
diff changeset
90 bool operator()(char* s1, char* s2) const {
96a9758165cd Initial revision
carl
parents:
diff changeset
91 return strcmp(s1, s2) < 0;
96a9758165cd Initial revision
carl
parents:
diff changeset
92 }
96a9758165cd Initial revision
carl
parents:
diff changeset
93 };
96a9758165cd Initial revision
carl
parents:
diff changeset
94
96a9758165cd Initial revision
carl
parents:
diff changeset
95 struct DNSBL {
96a9758165cd Initial revision
carl
parents:
diff changeset
96 char *suffix; // blacklist suffix like blackholes.five-ten-sg.com
96a9758165cd Initial revision
carl
parents:
diff changeset
97 char *message; // error message with one or two %s operators for the ip address replacement
96a9758165cd Initial revision
carl
parents:
diff changeset
98 DNSBL(char *s, char *m);
96a9758165cd Initial revision
carl
parents:
diff changeset
99 };
96a9758165cd Initial revision
carl
parents:
diff changeset
100 DNSBL::DNSBL(char *s, char *m) {
96a9758165cd Initial revision
carl
parents:
diff changeset
101 suffix = s;
96a9758165cd Initial revision
carl
parents:
diff changeset
102 message = m;
96a9758165cd Initial revision
carl
parents:
diff changeset
103 }
96a9758165cd Initial revision
carl
parents:
diff changeset
104
96a9758165cd Initial revision
carl
parents:
diff changeset
105 typedef DNSBL * DNSBLP;
96a9758165cd Initial revision
carl
parents:
diff changeset
106 typedef list<DNSBLP> DNSBLL;
96a9758165cd Initial revision
carl
parents:
diff changeset
107 typedef DNSBLL * DNSBLLP;
96a9758165cd Initial revision
carl
parents:
diff changeset
108 typedef map<char *, char *, ltstr> string_map;
96a9758165cd Initial revision
carl
parents:
diff changeset
109 typedef map<char *, string_map *, ltstr> from_map;
96a9758165cd Initial revision
carl
parents:
diff changeset
110 typedef map<char *, DNSBLP, ltstr> dnsblp_map;
96a9758165cd Initial revision
carl
parents:
diff changeset
111 typedef map<char *, DNSBLLP, ltstr> dnsbllp_map;
96a9758165cd Initial revision
carl
parents:
diff changeset
112 typedef set<char *, ltstr> string_set;
96a9758165cd Initial revision
carl
parents:
diff changeset
113 typedef list<char *> string_list;
96a9758165cd Initial revision
carl
parents:
diff changeset
114
96a9758165cd Initial revision
carl
parents:
diff changeset
115 struct CONFIG {
96a9758165cd Initial revision
carl
parents:
diff changeset
116 // the only mutable stuff once it has been loaded from the config file
96a9758165cd Initial revision
carl
parents:
diff changeset
117 int reference_count; // protected by the global config_mutex
96a9758165cd Initial revision
carl
parents:
diff changeset
118 // all the rest is constant after loading from the config file
96a9758165cd Initial revision
carl
parents:
diff changeset
119 time_t load_time;
96a9758165cd Initial revision
carl
parents:
diff changeset
120 string_list config_files;
96a9758165cd Initial revision
carl
parents:
diff changeset
121 dnsblp_map dnsbls;
96a9758165cd Initial revision
carl
parents:
diff changeset
122 dnsbllp_map dnsblls;
96a9758165cd Initial revision
carl
parents:
diff changeset
123 from_map env_from;
96a9758165cd Initial revision
carl
parents:
diff changeset
124 string_map env_to_dnsbll; // map recipient to a named dnsbll
96a9758165cd Initial revision
carl
parents:
diff changeset
125 string_map env_to_chkfrom; // map recipient to a named from map
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
126 char * content_suffix; // for sbl url body filtering
9
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
127 char * content_message; // ""
24
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
128 char * limit_message; // error message for excessive bad html tags
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
129 int bad_tag_limit; // limit on bad html tags
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
130 string_set html_tags; // set of valid html tags
0
96a9758165cd Initial revision
carl
parents:
diff changeset
131 CONFIG();
96a9758165cd Initial revision
carl
parents:
diff changeset
132 ~CONFIG();
96a9758165cd Initial revision
carl
parents:
diff changeset
133 };
96a9758165cd Initial revision
carl
parents:
diff changeset
134 CONFIG::CONFIG() {
96a9758165cd Initial revision
carl
parents:
diff changeset
135 reference_count = 0;
96a9758165cd Initial revision
carl
parents:
diff changeset
136 load_time = 0;
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
137 content_suffix = NULL;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
138 content_message = NULL;
24
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
139 limit_message = NULL;
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
140 bad_tag_limit = 0;
0
96a9758165cd Initial revision
carl
parents:
diff changeset
141 }
96a9758165cd Initial revision
carl
parents:
diff changeset
142 CONFIG::~CONFIG() {
96a9758165cd Initial revision
carl
parents:
diff changeset
143 for (dnsblp_map::iterator i=dnsbls.begin(); i!=dnsbls.end(); i++) {
96a9758165cd Initial revision
carl
parents:
diff changeset
144 DNSBLP d = (*i).second;
24
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
145 // delete the underlying DNSBL objects.
0
96a9758165cd Initial revision
carl
parents:
diff changeset
146 delete d;
96a9758165cd Initial revision
carl
parents:
diff changeset
147 }
96a9758165cd Initial revision
carl
parents:
diff changeset
148 for (dnsbllp_map::iterator i=dnsblls.begin(); i!=dnsblls.end(); i++) {
96a9758165cd Initial revision
carl
parents:
diff changeset
149 DNSBLLP d = (*i).second;
24
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
150 // *d is a list of pointers to DNSBL objects, but
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
151 // the underlying objects have already been deleted above.
0
96a9758165cd Initial revision
carl
parents:
diff changeset
152 delete d;
96a9758165cd Initial revision
carl
parents:
diff changeset
153 }
96a9758165cd Initial revision
carl
parents:
diff changeset
154 for (from_map::iterator i=env_from.begin(); i!=env_from.end(); i++) {
96a9758165cd Initial revision
carl
parents:
diff changeset
155 string_map *d = (*i).second;
96a9758165cd Initial revision
carl
parents:
diff changeset
156 delete d;
96a9758165cd Initial revision
carl
parents:
diff changeset
157 }
96a9758165cd Initial revision
carl
parents:
diff changeset
158 }
96a9758165cd Initial revision
carl
parents:
diff changeset
159
16
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
160 static bool debug_syslog = false;
18
041ea016b684 add scanning for bare hostnames
carl
parents: 16
diff changeset
161 static bool loader_run = true; // used to stop the config loader thread
0
96a9758165cd Initial revision
carl
parents:
diff changeset
162 static string_set all_strings; // owns all the strings, only modified by the config loader thread
96a9758165cd Initial revision
carl
parents:
diff changeset
163 static CONFIG * config = NULL; // protected by the config_mutex
96a9758165cd Initial revision
carl
parents:
diff changeset
164
96a9758165cd Initial revision
carl
parents:
diff changeset
165 static pthread_mutex_t config_mutex;
96a9758165cd Initial revision
carl
parents:
diff changeset
166 static pthread_mutex_t syslog_mutex;
96a9758165cd Initial revision
carl
parents:
diff changeset
167 static pthread_mutex_t resolve_mutex;
96a9758165cd Initial revision
carl
parents:
diff changeset
168
96a9758165cd Initial revision
carl
parents:
diff changeset
169
96a9758165cd Initial revision
carl
parents:
diff changeset
170 ////////////////////////////////////////////////
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
171 // helper to discard the strings held by a string_set
0
96a9758165cd Initial revision
carl
parents:
diff changeset
172 //
9
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
173 static void discard(string_set &s);
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
174 static void discard(string_set &s) {
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
175 for (string_set::iterator i=s.begin(); i!=s.end(); i++) {
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
176 free(*i);
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
177 }
9
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
178 s.clear();
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
179 }
0
96a9758165cd Initial revision
carl
parents:
diff changeset
180
12
6ac6d6b822ce fix memory leak with duplicate url host names,
carl
parents: 11
diff changeset
181 ////////////////////////////////////////////////
6ac6d6b822ce fix memory leak with duplicate url host names,
carl
parents: 11
diff changeset
182 // helper to register a string in a string set
6ac6d6b822ce fix memory leak with duplicate url host names,
carl
parents: 11
diff changeset
183 //
6ac6d6b822ce fix memory leak with duplicate url host names,
carl
parents: 11
diff changeset
184 static char* register_string(string_set &s, char *name);
6ac6d6b822ce fix memory leak with duplicate url host names,
carl
parents: 11
diff changeset
185 static char* register_string(string_set &s, char *name) {
6ac6d6b822ce fix memory leak with duplicate url host names,
carl
parents: 11
diff changeset
186 string_set::iterator i = s.find(name);
6ac6d6b822ce fix memory leak with duplicate url host names,
carl
parents: 11
diff changeset
187 if (i != s.end()) return *i;
6ac6d6b822ce fix memory leak with duplicate url host names,
carl
parents: 11
diff changeset
188 char *x = strdup(name);
6ac6d6b822ce fix memory leak with duplicate url host names,
carl
parents: 11
diff changeset
189 s.insert(x);
6ac6d6b822ce fix memory leak with duplicate url host names,
carl
parents: 11
diff changeset
190 return x;
6ac6d6b822ce fix memory leak with duplicate url host names,
carl
parents: 11
diff changeset
191 }
6ac6d6b822ce fix memory leak with duplicate url host names,
carl
parents: 11
diff changeset
192
16
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
193 ////////////////////////////////////////////////
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
194 // syslog a message
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
195 //
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
196 static void my_syslog(char *text);
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
197 static void my_syslog(char *text) {
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
198 pthread_mutex_lock(&syslog_mutex);
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
199 openlog("dnsbl", LOG_PID, LOG_MAIL);
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
200 syslog(LOG_NOTICE, "%s", text);
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
201 closelog();
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
202 pthread_mutex_unlock(&syslog_mutex);
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
203 }
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
204
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
205
12
6ac6d6b822ce fix memory leak with duplicate url host names,
carl
parents: 11
diff changeset
206 // include the content scanner
6ac6d6b822ce fix memory leak with duplicate url host names,
carl
parents: 11
diff changeset
207 #include "scanner.cpp"
6ac6d6b822ce fix memory leak with duplicate url host names,
carl
parents: 11
diff changeset
208
6ac6d6b822ce fix memory leak with duplicate url host names,
carl
parents: 11
diff changeset
209
0
96a9758165cd Initial revision
carl
parents:
diff changeset
210 ////////////////////////////////////////////////
96a9758165cd Initial revision
carl
parents:
diff changeset
211 // mail filter private data, held for us by sendmail
96a9758165cd Initial revision
carl
parents:
diff changeset
212 //
96a9758165cd Initial revision
carl
parents:
diff changeset
213 struct mlfiPriv
96a9758165cd Initial revision
carl
parents:
diff changeset
214 {
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
215 // connection specific data
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
216 CONFIG *pc; // global context with our maps
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
217 int ip; // ip4 address of the smtp client
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
218 map<DNSBLP, status> checked; // status from those lists
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
219 // message specific data
0
96a9758165cd Initial revision
carl
parents:
diff changeset
220 char *mailaddr; // envelope from value
96a9758165cd Initial revision
carl
parents:
diff changeset
221 bool authenticated; // client authenticated? if so, suppress all dnsbl checks
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
222 bool have_whites; // have at least one whitelisted recipient? need to accept content and remove all non-whitelisted recipients if it fails
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
223 bool only_whites; // every recipient is whitelisted?
24
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
224 string_set non_whites; // remember the non-whitelisted recipients so we can remove them if need be
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
225 recorder *memory; // memory for the content scanner
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
226 url_scanner *scanner; // object to handle body scanning
0
96a9758165cd Initial revision
carl
parents:
diff changeset
227 mlfiPriv();
96a9758165cd Initial revision
carl
parents:
diff changeset
228 ~mlfiPriv();
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
229 void reset(bool final = false); // for a new message
0
96a9758165cd Initial revision
carl
parents:
diff changeset
230 };
96a9758165cd Initial revision
carl
parents:
diff changeset
231 mlfiPriv::mlfiPriv() {
96a9758165cd Initial revision
carl
parents:
diff changeset
232 pthread_mutex_lock(&config_mutex);
96a9758165cd Initial revision
carl
parents:
diff changeset
233 pc = config;
96a9758165cd Initial revision
carl
parents:
diff changeset
234 pc->reference_count++;
96a9758165cd Initial revision
carl
parents:
diff changeset
235 pthread_mutex_unlock(&config_mutex);
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
236 ip = 0;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
237 mailaddr = NULL;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
238 authenticated = false;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
239 have_whites = false;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
240 only_whites = true;
24
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
241 memory = new recorder(&pc->html_tags);
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
242 scanner = new url_scanner(memory);
0
96a9758165cd Initial revision
carl
parents:
diff changeset
243 }
96a9758165cd Initial revision
carl
parents:
diff changeset
244 mlfiPriv::~mlfiPriv() {
96a9758165cd Initial revision
carl
parents:
diff changeset
245 pthread_mutex_lock(&config_mutex);
96a9758165cd Initial revision
carl
parents:
diff changeset
246 pc->reference_count--;
96a9758165cd Initial revision
carl
parents:
diff changeset
247 pthread_mutex_unlock(&config_mutex);
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
248 reset(true);
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
249 }
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
250 void mlfiPriv::reset(bool final) {
0
96a9758165cd Initial revision
carl
parents:
diff changeset
251 if (mailaddr) free(mailaddr);
24
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
252 discard(non_whites);
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
253 delete memory;
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
254 delete scanner;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
255 if (!final) {
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
256 mailaddr = NULL;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
257 authenticated = false;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
258 have_whites = false;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
259 only_whites = true;
24
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
260 memory = new recorder(&pc->html_tags);
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
261 scanner = new url_scanner(memory);
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
262 }
0
96a9758165cd Initial revision
carl
parents:
diff changeset
263 }
96a9758165cd Initial revision
carl
parents:
diff changeset
264
96a9758165cd Initial revision
carl
parents:
diff changeset
265 #define MLFIPRIV ((struct mlfiPriv *) smfi_getpriv(ctx))
96a9758165cd Initial revision
carl
parents:
diff changeset
266
96a9758165cd Initial revision
carl
parents:
diff changeset
267
96a9758165cd Initial revision
carl
parents:
diff changeset
268 ////////////////////////////////////////////////
96a9758165cd Initial revision
carl
parents:
diff changeset
269 // register a global string
96a9758165cd Initial revision
carl
parents:
diff changeset
270 //
96a9758165cd Initial revision
carl
parents:
diff changeset
271 static char* register_string(char *name);
96a9758165cd Initial revision
carl
parents:
diff changeset
272 static char* register_string(char *name) {
12
6ac6d6b822ce fix memory leak with duplicate url host names,
carl
parents: 11
diff changeset
273 return register_string(all_strings, name);
0
96a9758165cd Initial revision
carl
parents:
diff changeset
274 }
96a9758165cd Initial revision
carl
parents:
diff changeset
275
96a9758165cd Initial revision
carl
parents:
diff changeset
276
96a9758165cd Initial revision
carl
parents:
diff changeset
277 static char* next_token(char *delim);
96a9758165cd Initial revision
carl
parents:
diff changeset
278 static char* next_token(char *delim) {
96a9758165cd Initial revision
carl
parents:
diff changeset
279 char *name = strtok(NULL, delim);
96a9758165cd Initial revision
carl
parents:
diff changeset
280 if (!name) return name;
96a9758165cd Initial revision
carl
parents:
diff changeset
281 return register_string(name);
96a9758165cd Initial revision
carl
parents:
diff changeset
282 }
96a9758165cd Initial revision
carl
parents:
diff changeset
283
96a9758165cd Initial revision
carl
parents:
diff changeset
284
96a9758165cd Initial revision
carl
parents:
diff changeset
285 ////////////////////////////////////////////////
96a9758165cd Initial revision
carl
parents:
diff changeset
286 // lookup an email address in the env_from or env_to maps
96a9758165cd Initial revision
carl
parents:
diff changeset
287 //
96a9758165cd Initial revision
carl
parents:
diff changeset
288 static char* lookup1(char *email, string_map map);
96a9758165cd Initial revision
carl
parents:
diff changeset
289 static char* lookup1(char *email, string_map map) {
96a9758165cd Initial revision
carl
parents:
diff changeset
290 string_map::iterator i = map.find(email);
96a9758165cd Initial revision
carl
parents:
diff changeset
291 if (i != map.end()) return (*i).second;
96a9758165cd Initial revision
carl
parents:
diff changeset
292 char *x = strchr(email, '@');
96a9758165cd Initial revision
carl
parents:
diff changeset
293 if (!x) return DEFAULT;
96a9758165cd Initial revision
carl
parents:
diff changeset
294 x++;
96a9758165cd Initial revision
carl
parents:
diff changeset
295 i = map.find(x);
96a9758165cd Initial revision
carl
parents:
diff changeset
296 if (i != map.end()) return (*i).second;
96a9758165cd Initial revision
carl
parents:
diff changeset
297 return DEFAULT;
96a9758165cd Initial revision
carl
parents:
diff changeset
298 }
96a9758165cd Initial revision
carl
parents:
diff changeset
299
96a9758165cd Initial revision
carl
parents:
diff changeset
300
96a9758165cd Initial revision
carl
parents:
diff changeset
301 ////////////////////////////////////////////////
96a9758165cd Initial revision
carl
parents:
diff changeset
302 // lookup an email address in the env_from or env_to maps
96a9758165cd Initial revision
carl
parents:
diff changeset
303 // this email address is passed in from sendmail, and will
96a9758165cd Initial revision
carl
parents:
diff changeset
304 // always be enclosed in <>. It may have mixed case, just
96a9758165cd Initial revision
carl
parents:
diff changeset
305 // as the mail client sent it.
96a9758165cd Initial revision
carl
parents:
diff changeset
306 //
96a9758165cd Initial revision
carl
parents:
diff changeset
307 static char* lookup(char* email, string_map map);
96a9758165cd Initial revision
carl
parents:
diff changeset
308 static char* lookup(char* email, string_map map) {
96a9758165cd Initial revision
carl
parents:
diff changeset
309 int n = strlen(email)-2;
96a9758165cd Initial revision
carl
parents:
diff changeset
310 if (n < 1) return DEFAULT; // malformed
96a9758165cd Initial revision
carl
parents:
diff changeset
311 char *key = strdup(email+1);
96a9758165cd Initial revision
carl
parents:
diff changeset
312 key[n] = '\0';
96a9758165cd Initial revision
carl
parents:
diff changeset
313 for (int i=0; i<n; i++) key[i] = tolower(key[i]);
96a9758165cd Initial revision
carl
parents:
diff changeset
314 char *rc = lookup1(key, map);
96a9758165cd Initial revision
carl
parents:
diff changeset
315 free(key);
96a9758165cd Initial revision
carl
parents:
diff changeset
316 return rc;
96a9758165cd Initial revision
carl
parents:
diff changeset
317 }
96a9758165cd Initial revision
carl
parents:
diff changeset
318
96a9758165cd Initial revision
carl
parents:
diff changeset
319
96a9758165cd Initial revision
carl
parents:
diff changeset
320 ////////////////////////////////////////////////
96a9758165cd Initial revision
carl
parents:
diff changeset
321 // find the dnsbl with a specific name
96a9758165cd Initial revision
carl
parents:
diff changeset
322 //
96a9758165cd Initial revision
carl
parents:
diff changeset
323 static DNSBLP find_dnsbl(CONFIG &dc, char *name);
96a9758165cd Initial revision
carl
parents:
diff changeset
324 static DNSBLP find_dnsbl(CONFIG &dc, char *name) {
96a9758165cd Initial revision
carl
parents:
diff changeset
325 dnsblp_map::iterator i = dc.dnsbls.find(name);
96a9758165cd Initial revision
carl
parents:
diff changeset
326 if (i == dc.dnsbls.end()) return NULL;
96a9758165cd Initial revision
carl
parents:
diff changeset
327 return (*i).second;
96a9758165cd Initial revision
carl
parents:
diff changeset
328 }
96a9758165cd Initial revision
carl
parents:
diff changeset
329
96a9758165cd Initial revision
carl
parents:
diff changeset
330
96a9758165cd Initial revision
carl
parents:
diff changeset
331 ////////////////////////////////////////////////
96a9758165cd Initial revision
carl
parents:
diff changeset
332 // find the dnsbll with a specific name
96a9758165cd Initial revision
carl
parents:
diff changeset
333 //
96a9758165cd Initial revision
carl
parents:
diff changeset
334 static DNSBLLP find_dnsbll(CONFIG &dc, char *name);
96a9758165cd Initial revision
carl
parents:
diff changeset
335 static DNSBLLP find_dnsbll(CONFIG &dc, char *name) {
96a9758165cd Initial revision
carl
parents:
diff changeset
336 dnsbllp_map::iterator i = dc.dnsblls.find(name);
96a9758165cd Initial revision
carl
parents:
diff changeset
337 if (i == dc.dnsblls.end()) return NULL;
96a9758165cd Initial revision
carl
parents:
diff changeset
338 return (*i).second;
96a9758165cd Initial revision
carl
parents:
diff changeset
339 }
96a9758165cd Initial revision
carl
parents:
diff changeset
340
96a9758165cd Initial revision
carl
parents:
diff changeset
341
96a9758165cd Initial revision
carl
parents:
diff changeset
342 ////////////////////////////////////////////////
96a9758165cd Initial revision
carl
parents:
diff changeset
343 // find the envfrom map with a specific name
96a9758165cd Initial revision
carl
parents:
diff changeset
344 //
96a9758165cd Initial revision
carl
parents:
diff changeset
345 static string_map* find_from_map(CONFIG &dc, char *name);
96a9758165cd Initial revision
carl
parents:
diff changeset
346 static string_map* find_from_map(CONFIG &dc, char *name) {
96a9758165cd Initial revision
carl
parents:
diff changeset
347 from_map::iterator i = dc.env_from.find(name);
96a9758165cd Initial revision
carl
parents:
diff changeset
348 if (i == dc.env_from.end()) return NULL;
96a9758165cd Initial revision
carl
parents:
diff changeset
349 return (*i).second;
96a9758165cd Initial revision
carl
parents:
diff changeset
350 }
96a9758165cd Initial revision
carl
parents:
diff changeset
351
96a9758165cd Initial revision
carl
parents:
diff changeset
352
96a9758165cd Initial revision
carl
parents:
diff changeset
353 static string_map& really_find_from_map(CONFIG &dc, char *name);
96a9758165cd Initial revision
carl
parents:
diff changeset
354 static string_map& really_find_from_map(CONFIG &dc, char *name) {
96a9758165cd Initial revision
carl
parents:
diff changeset
355 string_map *sm = find_from_map(dc, name);
96a9758165cd Initial revision
carl
parents:
diff changeset
356 if (!sm) {
96a9758165cd Initial revision
carl
parents:
diff changeset
357 sm = new string_map;
96a9758165cd Initial revision
carl
parents:
diff changeset
358 dc.env_from[name] = sm;
96a9758165cd Initial revision
carl
parents:
diff changeset
359 }
96a9758165cd Initial revision
carl
parents:
diff changeset
360 return *sm;
96a9758165cd Initial revision
carl
parents:
diff changeset
361 }
96a9758165cd Initial revision
carl
parents:
diff changeset
362
96a9758165cd Initial revision
carl
parents:
diff changeset
363
96a9758165cd Initial revision
carl
parents:
diff changeset
364 ////////////////////////////////////////////////
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
365 //
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
366 // ask a dns question and get an A record answer - we don't try
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
367 // very hard, just using the default resolver retry settings.
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
368 // If we cannot get an answer, we just accept the mail. The
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
369 // caller must ensure thread safety.
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
370 //
0
96a9758165cd Initial revision
carl
parents:
diff changeset
371 //
23
06de5ab6a232 add url decoding stage, allow http:/ single / in yahoo redirector, allow ip address hostnames
carl
parents: 22
diff changeset
372 static int dns_interface(char *question, bool maybe_ip);
06de5ab6a232 add url decoding stage, allow http:/ single / in yahoo redirector, allow ip address hostnames
carl
parents: 22
diff changeset
373 static int dns_interface(char *question, bool maybe_ip) {
16
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
374 #ifdef NS_PACKETSZ
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
375 u_char answer[NS_PACKETSZ];
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
376 int length = res_search(question, ns_c_in, ns_t_a, answer, sizeof(answer));
23
06de5ab6a232 add url decoding stage, allow http:/ single / in yahoo redirector, allow ip address hostnames
carl
parents: 22
diff changeset
377 if (length >= 0) { // no error yet
06de5ab6a232 add url decoding stage, allow http:/ single / in yahoo redirector, allow ip address hostnames
carl
parents: 22
diff changeset
378 // parse the answer
06de5ab6a232 add url decoding stage, allow http:/ single / in yahoo redirector, allow ip address hostnames
carl
parents: 22
diff changeset
379 ns_msg handle;
06de5ab6a232 add url decoding stage, allow http:/ single / in yahoo redirector, allow ip address hostnames
carl
parents: 22
diff changeset
380 ns_rr rr;
06de5ab6a232 add url decoding stage, allow http:/ single / in yahoo redirector, allow ip address hostnames
carl
parents: 22
diff changeset
381 if (ns_initparse(answer, length, &handle) == 0) {
06de5ab6a232 add url decoding stage, allow http:/ single / in yahoo redirector, allow ip address hostnames
carl
parents: 22
diff changeset
382 int rrnum = 0;
06de5ab6a232 add url decoding stage, allow http:/ single / in yahoo redirector, allow ip address hostnames
carl
parents: 22
diff changeset
383 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
carl
parents: 22
diff changeset
384 if (ns_rr_type(rr) == ns_t_a) {
06de5ab6a232 add url decoding stage, allow http:/ single / in yahoo redirector, allow ip address hostnames
carl
parents: 22
diff changeset
385 int address;
06de5ab6a232 add url decoding stage, allow http:/ single / in yahoo redirector, allow ip address hostnames
carl
parents: 22
diff changeset
386 memcpy(&address, ns_rr_rdata(rr), sizeof(address));
06de5ab6a232 add url decoding stage, allow http:/ single / in yahoo redirector, allow ip address hostnames
carl
parents: 22
diff changeset
387 return address;
06de5ab6a232 add url decoding stage, allow http:/ single / in yahoo redirector, allow ip address hostnames
carl
parents: 22
diff changeset
388 }
06de5ab6a232 add url decoding stage, allow http:/ single / in yahoo redirector, allow ip address hostnames
carl
parents: 22
diff changeset
389 }
06de5ab6a232 add url decoding stage, allow http:/ single / in yahoo redirector, allow ip address hostnames
carl
parents: 22
diff changeset
390 }
06de5ab6a232 add url decoding stage, allow http:/ single / in yahoo redirector, allow ip address hostnames
carl
parents: 22
diff changeset
391 }
06de5ab6a232 add url decoding stage, allow http:/ single / in yahoo redirector, allow ip address hostnames
carl
parents: 22
diff changeset
392 if (maybe_ip) {
06de5ab6a232 add url decoding stage, allow http:/ single / in yahoo redirector, allow ip address hostnames
carl
parents: 22
diff changeset
393 // might be a bare ip address
06de5ab6a232 add url decoding stage, allow http:/ single / in yahoo redirector, allow ip address hostnames
carl
parents: 22
diff changeset
394 in_addr ip;
06de5ab6a232 add url decoding stage, allow http:/ single / in yahoo redirector, allow ip address hostnames
carl
parents: 22
diff changeset
395 if (inet_aton(question, &ip)) {
06de5ab6a232 add url decoding stage, allow http:/ single / in yahoo redirector, allow ip address hostnames
carl
parents: 22
diff changeset
396 return ip.s_addr;
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
397 }
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
398 }
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
399 return 0;
16
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
400 #else
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
401 struct hostent *host = gethostbyname(question);
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
402 if (!host) return 0;
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
403 if (host->h_addrtype != AF_INET) return 0;
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
404 int address;
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
405 memcpy(&address, host->h_addr, sizeof(address));
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
406 return address;
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
407 #endif
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
408 }
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
409
23
06de5ab6a232 add url decoding stage, allow http:/ single / in yahoo redirector, allow ip address hostnames
carl
parents: 22
diff changeset
410 static int protected_dns_interface(char *question, bool maybe_ip);
06de5ab6a232 add url decoding stage, allow http:/ single / in yahoo redirector, allow ip address hostnames
carl
parents: 22
diff changeset
411 static int protected_dns_interface(char *question, bool maybe_ip) {
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
412 int ans;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
413 pthread_mutex_lock(&resolve_mutex);
23
06de5ab6a232 add url decoding stage, allow http:/ single / in yahoo redirector, allow ip address hostnames
carl
parents: 22
diff changeset
414 ans = dns_interface(question, maybe_ip);
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
415 pthread_mutex_unlock(&resolve_mutex);
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
416 return ans;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
417
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
418 }
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
419
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
420 ////////////////////////////////////////////////
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
421 // check a single dnsbl
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
422 //
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
423 static status check_single(int ip, char *suffix);
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
424 static status check_single(int ip, char *suffix) {
0
96a9758165cd Initial revision
carl
parents:
diff changeset
425 // make a dns question
96a9758165cd Initial revision
carl
parents:
diff changeset
426 const u_char *src = (const u_char *)&ip;
96a9758165cd Initial revision
carl
parents:
diff changeset
427 if (src[0] == 127) return oksofar; // don't do dns lookups on localhost
16
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
428 #ifdef NS_MAXDNAME
0
96a9758165cd Initial revision
carl
parents:
diff changeset
429 char question[NS_MAXDNAME];
16
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
430 #else
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
431 char question[1000];
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
432 #endif
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
433 snprintf(question, sizeof(question), "%u.%u.%u.%u.%s.", src[3], src[2], src[1], src[0], suffix);
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
434 // ask the question, if we get an A record it implies a blacklisted ip address
23
06de5ab6a232 add url decoding stage, allow http:/ single / in yahoo redirector, allow ip address hostnames
carl
parents: 22
diff changeset
435 return (protected_dns_interface(question, false)) ? reject : oksofar;
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
436 }
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
437
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
438
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
439 ////////////////////////////////////////////////
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
440 // check a single dnsbl
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
441 //
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
442 static status check_single(int ip, DNSBL &bl);
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
443 static status check_single(int ip, DNSBL &bl) {
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
444 return check_single(ip, bl.suffix);
0
96a9758165cd Initial revision
carl
parents:
diff changeset
445 }
96a9758165cd Initial revision
carl
parents:
diff changeset
446
96a9758165cd Initial revision
carl
parents:
diff changeset
447
96a9758165cd Initial revision
carl
parents:
diff changeset
448 ////////////////////////////////////////////////
96a9758165cd Initial revision
carl
parents:
diff changeset
449 // check the dnsbls specified for this recipient
96a9758165cd Initial revision
carl
parents:
diff changeset
450 //
96a9758165cd Initial revision
carl
parents:
diff changeset
451 static status check_dnsbl(mlfiPriv &priv, DNSBLLP dnsbllp, DNSBLP &rejectlist);
96a9758165cd Initial revision
carl
parents:
diff changeset
452 static status check_dnsbl(mlfiPriv &priv, DNSBLLP dnsbllp, DNSBLP &rejectlist) {
96a9758165cd Initial revision
carl
parents:
diff changeset
453 if (priv.authenticated) return oksofar;
96a9758165cd Initial revision
carl
parents:
diff changeset
454 if (!dnsbllp) return oksofar;
96a9758165cd Initial revision
carl
parents:
diff changeset
455 DNSBLL &dnsbll = *dnsbllp;
96a9758165cd Initial revision
carl
parents:
diff changeset
456 for (DNSBLL::iterator i=dnsbll.begin(); i!=dnsbll.end(); i++) {
96a9758165cd Initial revision
carl
parents:
diff changeset
457 DNSBLP dp = *i; // non null by construction
96a9758165cd Initial revision
carl
parents:
diff changeset
458 status st;
96a9758165cd Initial revision
carl
parents:
diff changeset
459 map<DNSBLP, status>::iterator f = priv.checked.find(dp);
96a9758165cd Initial revision
carl
parents:
diff changeset
460 if (f == priv.checked.end()) {
96a9758165cd Initial revision
carl
parents:
diff changeset
461 // have not checked this list yet
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
462 st = check_single(priv.ip, *dp);
0
96a9758165cd Initial revision
carl
parents:
diff changeset
463 rejectlist = dp;
96a9758165cd Initial revision
carl
parents:
diff changeset
464 priv.checked[dp] = st;
96a9758165cd Initial revision
carl
parents:
diff changeset
465 }
96a9758165cd Initial revision
carl
parents:
diff changeset
466 else {
96a9758165cd Initial revision
carl
parents:
diff changeset
467 st = (*f).second;
96a9758165cd Initial revision
carl
parents:
diff changeset
468 rejectlist = (*f).first;
96a9758165cd Initial revision
carl
parents:
diff changeset
469 }
96a9758165cd Initial revision
carl
parents:
diff changeset
470 if (st == reject) return st;
96a9758165cd Initial revision
carl
parents:
diff changeset
471 }
96a9758165cd Initial revision
carl
parents:
diff changeset
472 return oksofar;
96a9758165cd Initial revision
carl
parents:
diff changeset
473 }
96a9758165cd Initial revision
carl
parents:
diff changeset
474
96a9758165cd Initial revision
carl
parents:
diff changeset
475
96a9758165cd Initial revision
carl
parents:
diff changeset
476 ////////////////////////////////////////////////
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
477 // check the dnsbls specified for this recipient
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
478 //
16
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
479 static status check_hosts(mlfiPriv &priv, char *&host, int &ip);
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
480 static status check_hosts(mlfiPriv &priv, char *&host, int &ip) {
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
481 CONFIG &dc = *priv.pc;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
482 if (!dc.content_suffix) return oksofar;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
483 int count = 0;
24
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
484 for (string_set::iterator i=priv.memory->hosts.begin(); i!=priv.memory->hosts.end(); i++) {
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
485 count++;
12
6ac6d6b822ce fix memory leak with duplicate url host names,
carl
parents: 11
diff changeset
486 if (count > 20) return oksofar; // silly to check too many hosts
16
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
487 host = *i;
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
488 if (debug_syslog) {
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
489 char buf[200];
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
490 snprintf(buf, sizeof(buf), "looking for host %s", host);
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
491 my_syslog(buf);
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
492 }
23
06de5ab6a232 add url decoding stage, allow http:/ single / in yahoo redirector, allow ip address hostnames
carl
parents: 22
diff changeset
493 ip = protected_dns_interface(host, true);
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
494 if (ip) {
16
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
495 if (debug_syslog) {
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
496 char adr[sizeof "255.255.255.255"];
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
497 adr[0] = '\0';
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
498 inet_ntop(AF_INET, (const u_char *)&ip, adr, sizeof(adr));
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
499 char buf[200];
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
500 snprintf(buf, sizeof(buf), "found host %s at %s", host, adr);
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
501 my_syslog(buf);
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
502 }
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
503 status st = check_single(ip, dc.content_suffix);
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
504 if (st == reject) return st;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
505 }
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
506 }
24
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
507 host = NULL;
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
508 int bad = priv.memory->bad_html_tags;
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
509 int lim = priv.pc->bad_tag_limit;
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
510 if ((bad > lim) && (lim > 0)) return reject;
9
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
511 return oksofar;
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
512 }
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
513
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
514
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
515 ////////////////////////////////////////////////
0
96a9758165cd Initial revision
carl
parents:
diff changeset
516 // start of sendmail milter interfaces
96a9758165cd Initial revision
carl
parents:
diff changeset
517 //
96a9758165cd Initial revision
carl
parents:
diff changeset
518 sfsistat mlfi_connect(SMFICTX *ctx, char *hostname, _SOCK_ADDR *hostaddr)
96a9758165cd Initial revision
carl
parents:
diff changeset
519 {
96a9758165cd Initial revision
carl
parents:
diff changeset
520 // allocate some private memory
96a9758165cd Initial revision
carl
parents:
diff changeset
521 mlfiPriv *priv = new mlfiPriv;
96a9758165cd Initial revision
carl
parents:
diff changeset
522 if (hostaddr->sa_family == AF_INET) {
96a9758165cd Initial revision
carl
parents:
diff changeset
523 priv->ip = ((struct sockaddr_in *)hostaddr)->sin_addr.s_addr;
96a9758165cd Initial revision
carl
parents:
diff changeset
524 }
96a9758165cd Initial revision
carl
parents:
diff changeset
525
96a9758165cd Initial revision
carl
parents:
diff changeset
526 // save the private data
96a9758165cd Initial revision
carl
parents:
diff changeset
527 smfi_setpriv(ctx, (void*)priv);
96a9758165cd Initial revision
carl
parents:
diff changeset
528
96a9758165cd Initial revision
carl
parents:
diff changeset
529 // continue processing
96a9758165cd Initial revision
carl
parents:
diff changeset
530 return SMFIS_CONTINUE;
96a9758165cd Initial revision
carl
parents:
diff changeset
531 }
96a9758165cd Initial revision
carl
parents:
diff changeset
532
96a9758165cd Initial revision
carl
parents:
diff changeset
533 sfsistat mlfi_envfrom(SMFICTX *ctx, char **from)
96a9758165cd Initial revision
carl
parents:
diff changeset
534 {
96a9758165cd Initial revision
carl
parents:
diff changeset
535 mlfiPriv &priv = *MLFIPRIV;
96a9758165cd Initial revision
carl
parents:
diff changeset
536 priv.mailaddr = strdup(from[0]);
96a9758165cd Initial revision
carl
parents:
diff changeset
537 priv.authenticated = (smfi_getsymval(ctx, "{auth_authen}") != NULL);
96a9758165cd Initial revision
carl
parents:
diff changeset
538 return SMFIS_CONTINUE;
96a9758165cd Initial revision
carl
parents:
diff changeset
539 }
96a9758165cd Initial revision
carl
parents:
diff changeset
540
96a9758165cd Initial revision
carl
parents:
diff changeset
541 sfsistat mlfi_envrcpt(SMFICTX *ctx, char **rcpt)
96a9758165cd Initial revision
carl
parents:
diff changeset
542 {
96a9758165cd Initial revision
carl
parents:
diff changeset
543 DNSBLP rejectlist = NULL; // list that caused the reject
96a9758165cd Initial revision
carl
parents:
diff changeset
544 status st = oksofar;
96a9758165cd Initial revision
carl
parents:
diff changeset
545 mlfiPriv &priv = *MLFIPRIV;
96a9758165cd Initial revision
carl
parents:
diff changeset
546 CONFIG &dc = *priv.pc;
96a9758165cd Initial revision
carl
parents:
diff changeset
547 char *rcptaddr = rcpt[0];
96a9758165cd Initial revision
carl
parents:
diff changeset
548 char *dnsname = lookup(rcptaddr, dc.env_to_dnsbll);
96a9758165cd Initial revision
carl
parents:
diff changeset
549 char *fromname = lookup(rcptaddr, dc.env_to_chkfrom);
96a9758165cd Initial revision
carl
parents:
diff changeset
550 if ((strcmp(dnsname, BLACK) == 0) ||
96a9758165cd Initial revision
carl
parents:
diff changeset
551 (strcmp(fromname, BLACK) == 0)) {
96a9758165cd Initial revision
carl
parents:
diff changeset
552 st = black; // two options to blacklist this recipient
96a9758165cd Initial revision
carl
parents:
diff changeset
553 }
96a9758165cd Initial revision
carl
parents:
diff changeset
554 else if (strcmp(fromname, WHITE) == 0) {
96a9758165cd Initial revision
carl
parents:
diff changeset
555 st = white;
96a9758165cd Initial revision
carl
parents:
diff changeset
556 }
96a9758165cd Initial revision
carl
parents:
diff changeset
557 else {
96a9758165cd Initial revision
carl
parents:
diff changeset
558 // check an env_from map
96a9758165cd Initial revision
carl
parents:
diff changeset
559 string_map *sm = find_from_map(dc, fromname);
96a9758165cd Initial revision
carl
parents:
diff changeset
560 if (sm != NULL) {
96a9758165cd Initial revision
carl
parents:
diff changeset
561 fromname = lookup(priv.mailaddr, *sm); // returns default if name not in map
96a9758165cd Initial revision
carl
parents:
diff changeset
562 if (strcmp(fromname, BLACK) == 0) {
96a9758165cd Initial revision
carl
parents:
diff changeset
563 st = black; // blacklist this envelope from value
96a9758165cd Initial revision
carl
parents:
diff changeset
564 }
96a9758165cd Initial revision
carl
parents:
diff changeset
565 if (strcmp(fromname, WHITE) == 0) {
96a9758165cd Initial revision
carl
parents:
diff changeset
566 st = white; // blacklist this envelope from value
96a9758165cd Initial revision
carl
parents:
diff changeset
567 }
96a9758165cd Initial revision
carl
parents:
diff changeset
568 }
96a9758165cd Initial revision
carl
parents:
diff changeset
569 }
96a9758165cd Initial revision
carl
parents:
diff changeset
570 if ((st == oksofar) && (strcmp(dnsname, WHITE) != 0)) {
96a9758165cd Initial revision
carl
parents:
diff changeset
571 // check dns lists
96a9758165cd Initial revision
carl
parents:
diff changeset
572 st = check_dnsbl(priv, find_dnsbll(dc, dnsname), rejectlist);
96a9758165cd Initial revision
carl
parents:
diff changeset
573 }
96a9758165cd Initial revision
carl
parents:
diff changeset
574
96a9758165cd Initial revision
carl
parents:
diff changeset
575 if (st == reject) {
96a9758165cd Initial revision
carl
parents:
diff changeset
576 // reject the recipient based on some dnsbl
96a9758165cd Initial revision
carl
parents:
diff changeset
577 char adr[sizeof "255.255.255.255"];
96a9758165cd Initial revision
carl
parents:
diff changeset
578 adr[0] = '\0';
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
579 inet_ntop(AF_INET, (const u_char *)&priv.ip, adr, sizeof(adr));
0
96a9758165cd Initial revision
carl
parents:
diff changeset
580 char buf[2000];
96a9758165cd Initial revision
carl
parents:
diff changeset
581 snprintf(buf, sizeof(buf), rejectlist->message, adr, adr);
96a9758165cd Initial revision
carl
parents:
diff changeset
582 smfi_setreply(ctx, "550", "5.7.1", buf);
96a9758165cd Initial revision
carl
parents:
diff changeset
583 return SMFIS_REJECT;
96a9758165cd Initial revision
carl
parents:
diff changeset
584 }
96a9758165cd Initial revision
carl
parents:
diff changeset
585 else if (st == black) {
96a9758165cd Initial revision
carl
parents:
diff changeset
586 // reject the recipient based on blacklisting either from or to
96a9758165cd Initial revision
carl
parents:
diff changeset
587 smfi_setreply(ctx, "550", "5.7.1", "no such user");
96a9758165cd Initial revision
carl
parents:
diff changeset
588 return SMFIS_REJECT;
96a9758165cd Initial revision
carl
parents:
diff changeset
589 }
96a9758165cd Initial revision
carl
parents:
diff changeset
590 else {
96a9758165cd Initial revision
carl
parents:
diff changeset
591 // accept the recipient
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
592 if (st == oksofar) {
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
593 // but remember the non-whites
12
6ac6d6b822ce fix memory leak with duplicate url host names,
carl
parents: 11
diff changeset
594 register_string(priv.non_whites, rcptaddr);
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
595 priv.only_whites = false;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
596 }
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
597 if (st == white) {
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
598 priv.have_whites = true;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
599 }
0
96a9758165cd Initial revision
carl
parents:
diff changeset
600 return SMFIS_CONTINUE;
96a9758165cd Initial revision
carl
parents:
diff changeset
601 }
96a9758165cd Initial revision
carl
parents:
diff changeset
602 }
96a9758165cd Initial revision
carl
parents:
diff changeset
603
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
604 sfsistat mlfi_body(SMFICTX *ctx, u_char *data, size_t len)
0
96a9758165cd Initial revision
carl
parents:
diff changeset
605 {
96a9758165cd Initial revision
carl
parents:
diff changeset
606 mlfiPriv &priv = *MLFIPRIV;
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
607 if (priv.authenticated) return SMFIS_CONTINUE;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
608 if (priv.only_whites) return SMFIS_CONTINUE;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
609 priv.scanner->scan(data, len);
11
2c206836b4cc integration work on url scanner
carl
parents: 9
diff changeset
610 return SMFIS_CONTINUE;
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
611 }
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
612
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
613 sfsistat mlfi_eom(SMFICTX *ctx)
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
614 {
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
615 sfsistat rc;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
616 mlfiPriv &priv = *MLFIPRIV;
16
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
617 char *host = NULL;
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
618 int ip;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
619 // process end of message
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
620 if (priv.authenticated ||
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
621 priv.only_whites ||
16
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
622 (check_hosts(priv, host, ip) == oksofar)) rc = SMFIS_CONTINUE;
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
623 else {
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
624 if (!priv.have_whites) {
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
625 // can reject the entire message
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
626 char buf[2000];
24
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
627 if (!host) {
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
628 // must be rejected due to excessive bad html tags
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
629 snprintf(buf, sizeof(buf), priv.pc->limit_message);
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
630 }
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
631 else {
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
632 char adr[sizeof "255.255.255.255"];
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
633 adr[0] = '\0';
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
634 inet_ntop(AF_INET, (const u_char *)&ip, adr, sizeof(adr));
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
635 snprintf(buf, sizeof(buf), priv.pc->content_message, host, adr);
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
636 }
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
637 smfi_setreply(ctx, "550", "5.7.1", buf);
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
638 rc = SMFIS_REJECT;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
639 }
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
640 else {
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
641 // need to accept it but remove the recipients that don't want it
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
642 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
643 char *rcpt = *i;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
644 smfi_delrcpt(ctx, rcpt);
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
645 }
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
646 rc = SMFIS_CONTINUE;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
647 }
0
96a9758165cd Initial revision
carl
parents:
diff changeset
648 }
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
649 // reset for a new message on the same connection
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
650 mlfi_abort(ctx);
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
651 return rc;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
652 }
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
653
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
654 sfsistat mlfi_abort(SMFICTX *ctx)
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
655 {
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
656 mlfiPriv &priv = *MLFIPRIV;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
657 priv.reset();
0
96a9758165cd Initial revision
carl
parents:
diff changeset
658 return SMFIS_CONTINUE;
96a9758165cd Initial revision
carl
parents:
diff changeset
659 }
96a9758165cd Initial revision
carl
parents:
diff changeset
660
96a9758165cd Initial revision
carl
parents:
diff changeset
661 sfsistat mlfi_close(SMFICTX *ctx)
96a9758165cd Initial revision
carl
parents:
diff changeset
662 {
96a9758165cd Initial revision
carl
parents:
diff changeset
663 mlfiPriv *priv = MLFIPRIV;
96a9758165cd Initial revision
carl
parents:
diff changeset
664 if (!priv) return SMFIS_CONTINUE;
96a9758165cd Initial revision
carl
parents:
diff changeset
665 delete priv;
96a9758165cd Initial revision
carl
parents:
diff changeset
666 smfi_setpriv(ctx, NULL);
96a9758165cd Initial revision
carl
parents:
diff changeset
667 return SMFIS_CONTINUE;
96a9758165cd Initial revision
carl
parents:
diff changeset
668 }
96a9758165cd Initial revision
carl
parents:
diff changeset
669
96a9758165cd Initial revision
carl
parents:
diff changeset
670 struct smfiDesc smfilter =
96a9758165cd Initial revision
carl
parents:
diff changeset
671 {
96a9758165cd Initial revision
carl
parents:
diff changeset
672 "DNSBL", // filter name
96a9758165cd Initial revision
carl
parents:
diff changeset
673 SMFI_VERSION, // version code -- do not change
96a9758165cd Initial revision
carl
parents:
diff changeset
674 SMFIF_DELRCPT, // flags
96a9758165cd Initial revision
carl
parents:
diff changeset
675 mlfi_connect, // connection info filter
96a9758165cd Initial revision
carl
parents:
diff changeset
676 NULL, // SMTP HELO command filter
96a9758165cd Initial revision
carl
parents:
diff changeset
677 mlfi_envfrom, // envelope sender filter
96a9758165cd Initial revision
carl
parents:
diff changeset
678 mlfi_envrcpt, // envelope recipient filter
96a9758165cd Initial revision
carl
parents:
diff changeset
679 NULL, // header filter
96a9758165cd Initial revision
carl
parents:
diff changeset
680 NULL, // end of header
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
681 mlfi_body, // body block filter
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
682 mlfi_eom, // end of message
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
683 mlfi_abort, // message aborted
0
96a9758165cd Initial revision
carl
parents:
diff changeset
684 mlfi_close, // connection cleanup
96a9758165cd Initial revision
carl
parents:
diff changeset
685 };
96a9758165cd Initial revision
carl
parents:
diff changeset
686
96a9758165cd Initial revision
carl
parents:
diff changeset
687
96a9758165cd Initial revision
carl
parents:
diff changeset
688 static void dumpit(char *name, string_map map);
96a9758165cd Initial revision
carl
parents:
diff changeset
689 static void dumpit(char *name, string_map map) {
9
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
690 fprintf(stdout, "\n");
0
96a9758165cd Initial revision
carl
parents:
diff changeset
691 for (string_map::iterator i=map.begin(); i!=map.end(); i++) {
9
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
692 fprintf(stdout, "%s %s->%s\n", name, (*i).first, (*i).second);
0
96a9758165cd Initial revision
carl
parents:
diff changeset
693 }
96a9758165cd Initial revision
carl
parents:
diff changeset
694 }
96a9758165cd Initial revision
carl
parents:
diff changeset
695
96a9758165cd Initial revision
carl
parents:
diff changeset
696
96a9758165cd Initial revision
carl
parents:
diff changeset
697 static void dumpit(from_map map);
96a9758165cd Initial revision
carl
parents:
diff changeset
698 static void dumpit(from_map map) {
96a9758165cd Initial revision
carl
parents:
diff changeset
699 for (from_map::iterator i=map.begin(); i!=map.end(); i++) {
3
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
700 char buf[2000];
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
701 snprintf(buf, sizeof(buf), "envelope from map for %s", (*i).first);
0
96a9758165cd Initial revision
carl
parents:
diff changeset
702 string_map *sm = (*i).second;
3
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
703 dumpit(buf, *sm);
0
96a9758165cd Initial revision
carl
parents:
diff changeset
704 }
96a9758165cd Initial revision
carl
parents:
diff changeset
705 }
96a9758165cd Initial revision
carl
parents:
diff changeset
706
96a9758165cd Initial revision
carl
parents:
diff changeset
707
3
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
708 static void dumpit(CONFIG &dc);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
709 static void dumpit(CONFIG &dc) {
5
793ac9cc114d updates to use dcc conf files
carl
parents: 4
diff changeset
710 dumpit(dc.env_from);
793ac9cc114d updates to use dcc conf files
carl
parents: 4
diff changeset
711 dumpit("envelope to (dnsbl list)", dc.env_to_dnsbll);
793ac9cc114d updates to use dcc conf files
carl
parents: 4
diff changeset
712 dumpit("envelope to (from map)", dc.env_to_chkfrom);
9
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
713 fprintf(stdout, "\ndnsbls\n");
0
96a9758165cd Initial revision
carl
parents:
diff changeset
714 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
715 fprintf(stdout, "%s %s %s\n", (*i).first, (*i).second->suffix, (*i).second->message);
0
96a9758165cd Initial revision
carl
parents:
diff changeset
716 }
9
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
717 fprintf(stdout, "\ndnsbl_lists\n");
0
96a9758165cd Initial revision
carl
parents:
diff changeset
718 for (dnsbllp_map::iterator i=dc.dnsblls.begin(); i!=dc.dnsblls.end(); i++) {
96a9758165cd Initial revision
carl
parents:
diff changeset
719 char *name = (*i).first;
96a9758165cd Initial revision
carl
parents:
diff changeset
720 DNSBLL &dl = *((*i).second);
9
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
721 fprintf(stdout, "%s", name);
0
96a9758165cd Initial revision
carl
parents:
diff changeset
722 for (DNSBLL::iterator j=dl.begin(); j!=dl.end(); j++) {
96a9758165cd Initial revision
carl
parents:
diff changeset
723 DNSBL &d = **j;
9
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
724 fprintf(stdout, " %s", d.suffix);
0
96a9758165cd Initial revision
carl
parents:
diff changeset
725 }
9
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
726 fprintf(stdout, "\n");
0
96a9758165cd Initial revision
carl
parents:
diff changeset
727 }
9
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
728 if (dc.content_suffix) {
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
729 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
730 }
24
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
731 if (dc.bad_tag_limit) {
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
732 fprintf(stdout, "\ncontent filtering for excessive html tags enabled with limit %d %s\n", dc.bad_tag_limit, dc.limit_message);
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
733 }
9
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
734 fprintf(stdout, "\nfiles\n");
3
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
735 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
736 char *f = *i;
9
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
737 fprintf(stdout, "config includes %s\n", f);
3
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
738 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
739 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
740
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
741
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
742 ////////////////////////////////////////////////
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
743 // check for redundant or recursive include files
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
744 //
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
745 static bool ok_to_include(CONFIG &dc, char *fn);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
746 static bool ok_to_include(CONFIG &dc, char *fn) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
747 if (!fn) return false;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
748 bool ok = true;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
749 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
750 char *f = *i;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
751 if (strcmp(f, fn) == 0) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
752 my_syslog("redundant or recursive include file detected");
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
753 ok = false;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
754 break;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
755 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
756 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
757 return ok;
0
96a9758165cd Initial revision
carl
parents:
diff changeset
758 }
96a9758165cd Initial revision
carl
parents:
diff changeset
759
96a9758165cd Initial revision
carl
parents:
diff changeset
760
96a9758165cd Initial revision
carl
parents:
diff changeset
761 ////////////////////////////////////////////////
96a9758165cd Initial revision
carl
parents:
diff changeset
762 // load a single config file
96a9758165cd Initial revision
carl
parents:
diff changeset
763 //
3
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
764 static void load_conf_dcc(CONFIG &dc, char *name, char *fn);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
765 static void load_conf_dcc(CONFIG &dc, char *name, char *fn) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
766 dc.config_files.push_back(fn);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
767 char *list = BLACK;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
768 const int LINE_SIZE = 2000;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
769 ifstream is(fn);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
770 if (is.fail()) return;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
771 char line[LINE_SIZE];
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
772 char *delim = " \t";
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
773 int curline = 0;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
774 while (!is.eof()) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
775 is.getline(line, LINE_SIZE);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
776 curline++;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
777 int n = strlen(line);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
778 if (!n) continue;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
779 for (int i=0; i<n; i++) line[i] = tolower(line[i]);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
780 if (line[0] == '#') continue;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
781 char *head = line;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
782 if (strspn(line, delim) == 0) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
783 // have a leading ok/many tag to fetch
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
784 char *cmd = strtok(line, delim);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
785 if (strcmp(cmd, MANY) == 0) list = BLACK;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
786 else if (strcmp(cmd, OK) == 0) list = WHITE;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
787 head = cmd + strlen(cmd) + 1;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
788 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
789 char *cmd = strtok(head, delim);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
790 if (!cmd) continue;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
791 if (strcmp(cmd, "env_from") == 0) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
792 char *from = next_token(delim);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
793 if (from) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
794 string_map &fm = really_find_from_map(dc, name);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
795 fm[from] = list;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
796 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
797 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
798 else if (strcmp(cmd, "env_to") == 0) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
799 char *to = next_token(delim);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
800 if (to) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
801 dc.env_to_dnsbll[to] = list;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
802 dc.env_to_chkfrom[to] = list;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
803 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
804 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
805 else if (strcmp(cmd, "substitute") == 0) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
806 char *tag = next_token(delim);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
807 if (tag && (strcmp(tag, "mail_host") == 0)) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
808 char *from = next_token(delim);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
809 if (from) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
810 string_map &fm = really_find_from_map(dc, name);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
811 fm[from] = list;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
812 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
813 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
814 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
815 else if (strcmp(cmd, "include") == 0) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
816 char *fn = next_token(delim);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
817 if (ok_to_include(dc, fn)) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
818 load_conf_dcc(dc, name, fn);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
819 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
820 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
821
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
822 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
823 is.close();
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
824 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
825
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
826
0
96a9758165cd Initial revision
carl
parents:
diff changeset
827 static void load_conf(CONFIG &dc, char *fn);
96a9758165cd Initial revision
carl
parents:
diff changeset
828 static void load_conf(CONFIG &dc, char *fn) {
96a9758165cd Initial revision
carl
parents:
diff changeset
829 dc.config_files.push_back(fn);
96a9758165cd Initial revision
carl
parents:
diff changeset
830 map<char*, int, ltstr> commands;
24
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
831 enum {dummy, content, htmllimit, htmltag, dnsbl, dnsbll, envfrom, envto, include, includedcc};
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
832 commands["content" ] = content;
24
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
833 commands["html_limit" ] = htmllimit;
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
834 commands["html_tag" ] = htmltag;
3
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
835 commands["dnsbl" ] = dnsbl;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
836 commands["dnsbl_list" ] = dnsbll;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
837 commands["env_from" ] = envfrom;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
838 commands["env_to" ] = envto;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
839 commands["include" ] = include;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
840 commands["include_dcc"] = includedcc;
0
96a9758165cd Initial revision
carl
parents:
diff changeset
841 const int LINE_SIZE = 2000;
96a9758165cd Initial revision
carl
parents:
diff changeset
842 ifstream is(fn);
96a9758165cd Initial revision
carl
parents:
diff changeset
843 if (is.fail()) return;
96a9758165cd Initial revision
carl
parents:
diff changeset
844 char line[LINE_SIZE];
96a9758165cd Initial revision
carl
parents:
diff changeset
845 char orig[LINE_SIZE];
96a9758165cd Initial revision
carl
parents:
diff changeset
846 char *delim = " \t";
96a9758165cd Initial revision
carl
parents:
diff changeset
847 int curline = 0;
96a9758165cd Initial revision
carl
parents:
diff changeset
848 while (!is.eof()) {
96a9758165cd Initial revision
carl
parents:
diff changeset
849 is.getline(line, LINE_SIZE);
96a9758165cd Initial revision
carl
parents:
diff changeset
850 snprintf(orig, sizeof(orig), "%s", line);
96a9758165cd Initial revision
carl
parents:
diff changeset
851 curline++;
96a9758165cd Initial revision
carl
parents:
diff changeset
852 int n = strlen(line);
96a9758165cd Initial revision
carl
parents:
diff changeset
853 for (int i=0; i<n; i++) line[i] = tolower(line[i]);
96a9758165cd Initial revision
carl
parents:
diff changeset
854 char *cmd = strtok(line, delim);
96a9758165cd Initial revision
carl
parents:
diff changeset
855 if (cmd && (cmd[0] != '#') && (cmd[0] != '\0')) {
96a9758165cd Initial revision
carl
parents:
diff changeset
856 // have a decent command
96a9758165cd Initial revision
carl
parents:
diff changeset
857 bool processed = false;
96a9758165cd Initial revision
carl
parents:
diff changeset
858 switch (commands[cmd]) {
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
859 case content: {
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
860 char *suff = strtok(NULL, delim);
24
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
861 if (!suff) break; // no dns suffix
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
862 char *msg = suff + strlen(suff);
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
863 if ((msg - line) >= strlen(orig)) break; // line ended with the dns suffix
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
864 msg = strchr(msg+1, '\'');
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
865 if (!msg) break; // no reply message template
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
866 msg++; // move over the leading '
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
867 if ((msg - line) >= strlen(orig)) break; // line ended with the leading quote
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
868 char *last = strchr(msg, '\'');
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
869 if (!last) break; // no trailing quote
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
870 *last = '\0'; // make it a null terminator
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
871 dc.content_suffix = register_string(suff);
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
872 dc.content_message = register_string(msg);
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
873 processed = true;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
874 } break;
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
875
24
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
876 case htmllimit: {
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
877 char *limit = strtok(NULL, delim);
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
878 if (!limit) break; // no integer limit
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
879 char *msg = limit + strlen(limit);
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
880 if ((msg - line) >= strlen(orig)) break; // line ended with the limit
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
881 msg = strchr(msg+1, '\'');
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
882 if (!msg) break; // no reply message template
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
883 msg++; // move over the leading '
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
884 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
885 char *last = strchr(msg, '\'');
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
886 if (!last) break; // no trailing quote
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
887 *last = '\0'; // make it a null terminator
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
888 dc.bad_tag_limit = atoi(limit);
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
889 dc.limit_message = register_string(msg);
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
890 processed = true;
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
891 } break;
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
892
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
893 case htmltag: {
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
894 char *tag = next_token(delim);
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
895 if (!tag) break; // no html tag value
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
896 dc.html_tags.insert(tag);
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
897 processed = true;
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
898 } break;
2e23b7184d2b start coding for bad html tag detection
carl
parents: 23
diff changeset
899
0
96a9758165cd Initial revision
carl
parents:
diff changeset
900 case dnsbl: {
96a9758165cd Initial revision
carl
parents:
diff changeset
901 // have a new dnsbl to use
96a9758165cd Initial revision
carl
parents:
diff changeset
902 char *name = next_token(delim);
96a9758165cd Initial revision
carl
parents:
diff changeset
903 if (!name) break; // no name name
96a9758165cd Initial revision
carl
parents:
diff changeset
904 if (find_dnsbl(dc, name)) break; // duplicate entry
96a9758165cd Initial revision
carl
parents:
diff changeset
905 char *suff = strtok(NULL, delim);
96a9758165cd Initial revision
carl
parents:
diff changeset
906 if (!suff) break; // no dns suffic
96a9758165cd Initial revision
carl
parents:
diff changeset
907 char *msg = suff + strlen(suff);
96a9758165cd Initial revision
carl
parents:
diff changeset
908 if ((msg - line) >= strlen(orig)) break; // line ended with the dns suffix
96a9758165cd Initial revision
carl
parents:
diff changeset
909 msg = strchr(msg+1, '\'');
96a9758165cd Initial revision
carl
parents:
diff changeset
910 if (!msg) break; // no reply message template
96a9758165cd Initial revision
carl
parents:
diff changeset
911 msg++; // move over the leading '
96a9758165cd Initial revision
carl
parents:
diff changeset
912 if ((msg - line) >= strlen(orig)) break; // line ended with the leading quote
96a9758165cd Initial revision
carl
parents:
diff changeset
913 char *last = strchr(msg, '\'');
96a9758165cd Initial revision
carl
parents:
diff changeset
914 if (!last) break; // no trailing quote
96a9758165cd Initial revision
carl
parents:
diff changeset
915 *last = '\0'; // make it a null terminator
96a9758165cd Initial revision
carl
parents:
diff changeset
916 dc.dnsbls[name] = new DNSBL(register_string(suff), register_string(msg));
96a9758165cd Initial revision
carl
parents:
diff changeset
917 processed = true;
96a9758165cd Initial revision
carl
parents:
diff changeset
918 } break;
96a9758165cd Initial revision
carl
parents:
diff changeset
919
96a9758165cd Initial revision
carl
parents:
diff changeset
920 case dnsbll: {
96a9758165cd Initial revision
carl
parents:
diff changeset
921 // define a new combination of dnsbls
96a9758165cd Initial revision
carl
parents:
diff changeset
922 char *name = next_token(delim);
96a9758165cd Initial revision
carl
parents:
diff changeset
923 if (!name) break;
96a9758165cd Initial revision
carl
parents:
diff changeset
924 if (find_dnsbll(dc, name)) break; // duplicate entry
96a9758165cd Initial revision
carl
parents:
diff changeset
925 char *list = next_token(delim);
96a9758165cd Initial revision
carl
parents:
diff changeset
926 if (!list || (*list == '\0') || (*list == '#')) break;
96a9758165cd Initial revision
carl
parents:
diff changeset
927 DNSBLLP d = new DNSBLL;
96a9758165cd Initial revision
carl
parents:
diff changeset
928 DNSBLP p = find_dnsbl(dc, list);
96a9758165cd Initial revision
carl
parents:
diff changeset
929 if (p) d->push_back(p);
96a9758165cd Initial revision
carl
parents:
diff changeset
930 while (true) {
96a9758165cd Initial revision
carl
parents:
diff changeset
931 list = next_token(delim);
96a9758165cd Initial revision
carl
parents:
diff changeset
932 if (!list || (*list == '\0') || (*list == '#')) break;
96a9758165cd Initial revision
carl
parents:
diff changeset
933 DNSBLP p = find_dnsbl(dc, list);
96a9758165cd Initial revision
carl
parents:
diff changeset
934 if (p) d->push_back(p);
96a9758165cd Initial revision
carl
parents:
diff changeset
935 }
96a9758165cd Initial revision
carl
parents:
diff changeset
936 dc.dnsblls[name] = d;
96a9758165cd Initial revision
carl
parents:
diff changeset
937 processed = true;
96a9758165cd Initial revision
carl
parents:
diff changeset
938 } break;
96a9758165cd Initial revision
carl
parents:
diff changeset
939
96a9758165cd Initial revision
carl
parents:
diff changeset
940 case envfrom: {
96a9758165cd Initial revision
carl
parents:
diff changeset
941 // add an entry into the named string_map
96a9758165cd Initial revision
carl
parents:
diff changeset
942 char *name = next_token(delim);
96a9758165cd Initial revision
carl
parents:
diff changeset
943 if (!name) break;
96a9758165cd Initial revision
carl
parents:
diff changeset
944 char *from = next_token(delim);
96a9758165cd Initial revision
carl
parents:
diff changeset
945 if (!from) break;
96a9758165cd Initial revision
carl
parents:
diff changeset
946 char *list = next_token(delim);
96a9758165cd Initial revision
carl
parents:
diff changeset
947 if (!list) break;
96a9758165cd Initial revision
carl
parents:
diff changeset
948 if ((strcmp(list, WHITE) == 0) ||
96a9758165cd Initial revision
carl
parents:
diff changeset
949 (strcmp(list, BLACK) == 0)) {
96a9758165cd Initial revision
carl
parents:
diff changeset
950 string_map &fm = really_find_from_map(dc, name);
96a9758165cd Initial revision
carl
parents:
diff changeset
951 fm[from] = list;
96a9758165cd Initial revision
carl
parents:
diff changeset
952 processed = true;
96a9758165cd Initial revision
carl
parents:
diff changeset
953 }
96a9758165cd Initial revision
carl
parents:
diff changeset
954 else {
96a9758165cd Initial revision
carl
parents:
diff changeset
955 // list may be the name of a previously defined from_map
96a9758165cd Initial revision
carl
parents:
diff changeset
956 string_map *m = find_from_map(dc, list);
96a9758165cd Initial revision
carl
parents:
diff changeset
957 if (m && (strcmp(list,name) != 0)) {
96a9758165cd Initial revision
carl
parents:
diff changeset
958 string_map &pm = *m;
96a9758165cd Initial revision
carl
parents:
diff changeset
959 string_map &fm = really_find_from_map(dc, name);
96a9758165cd Initial revision
carl
parents:
diff changeset
960 fm.insert(pm.begin(), pm.end());
96a9758165cd Initial revision
carl
parents:
diff changeset
961 processed = true;
96a9758165cd Initial revision
carl
parents:
diff changeset
962 }
96a9758165cd Initial revision
carl
parents:
diff changeset
963 }
96a9758165cd Initial revision
carl
parents:
diff changeset
964 } break;
96a9758165cd Initial revision
carl
parents:
diff changeset
965
96a9758165cd Initial revision
carl
parents:
diff changeset
966 case envto: {
96a9758165cd Initial revision
carl
parents:
diff changeset
967 // define the dnsbl_list and env_from maps to use for this recipient
96a9758165cd Initial revision
carl
parents:
diff changeset
968 char *to = next_token(delim);
96a9758165cd Initial revision
carl
parents:
diff changeset
969 if (!to) break;
96a9758165cd Initial revision
carl
parents:
diff changeset
970 char *list = next_token(delim);
96a9758165cd Initial revision
carl
parents:
diff changeset
971 if (!list) break;
96a9758165cd Initial revision
carl
parents:
diff changeset
972 char *from = next_token(delim);
96a9758165cd Initial revision
carl
parents:
diff changeset
973 if (!from) break;
96a9758165cd Initial revision
carl
parents:
diff changeset
974 dc.env_to_dnsbll[to] = list;
96a9758165cd Initial revision
carl
parents:
diff changeset
975 dc.env_to_chkfrom[to] = from;
96a9758165cd Initial revision
carl
parents:
diff changeset
976 processed = true;
96a9758165cd Initial revision
carl
parents:
diff changeset
977 } break;
96a9758165cd Initial revision
carl
parents:
diff changeset
978
96a9758165cd Initial revision
carl
parents:
diff changeset
979 case include: {
96a9758165cd Initial revision
carl
parents:
diff changeset
980 char *fn = next_token(delim);
3
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
981 if (ok_to_include(dc, fn)) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
982 load_conf(dc, fn);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
983 processed = true;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
984 }
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
985 } break;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
986
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
987 case includedcc: {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
988 char *name = next_token(delim);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
989 if (!name) break;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
990 char *fn = next_token(delim);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
991 if (ok_to_include(dc, fn)) {
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
992 load_conf_dcc(dc, name, fn);
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
993 processed = true;
0
96a9758165cd Initial revision
carl
parents:
diff changeset
994 }
96a9758165cd Initial revision
carl
parents:
diff changeset
995 } break;
96a9758165cd Initial revision
carl
parents:
diff changeset
996
96a9758165cd Initial revision
carl
parents:
diff changeset
997 default: {
96a9758165cd Initial revision
carl
parents:
diff changeset
998 } break;
96a9758165cd Initial revision
carl
parents:
diff changeset
999 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1000 if (!processed) {
96a9758165cd Initial revision
carl
parents:
diff changeset
1001 pthread_mutex_lock(&syslog_mutex);
96a9758165cd Initial revision
carl
parents:
diff changeset
1002 openlog("dnsbl", LOG_PID, LOG_MAIL);
96a9758165cd Initial revision
carl
parents:
diff changeset
1003 syslog(LOG_ERR, "ignoring file %s line %d : %s\n", fn, curline, orig);
96a9758165cd Initial revision
carl
parents:
diff changeset
1004 closelog();
96a9758165cd Initial revision
carl
parents:
diff changeset
1005 pthread_mutex_unlock(&syslog_mutex);
96a9758165cd Initial revision
carl
parents:
diff changeset
1006 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1007 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1008 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1009 is.close();
96a9758165cd Initial revision
carl
parents:
diff changeset
1010 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1011
96a9758165cd Initial revision
carl
parents:
diff changeset
1012
96a9758165cd Initial revision
carl
parents:
diff changeset
1013 ////////////////////////////////////////////////
96a9758165cd Initial revision
carl
parents:
diff changeset
1014 // reload the config
96a9758165cd Initial revision
carl
parents:
diff changeset
1015 //
96a9758165cd Initial revision
carl
parents:
diff changeset
1016 static CONFIG* new_conf();
96a9758165cd Initial revision
carl
parents:
diff changeset
1017 static CONFIG* new_conf() {
96a9758165cd Initial revision
carl
parents:
diff changeset
1018 my_syslog("loading new configuration");
96a9758165cd Initial revision
carl
parents:
diff changeset
1019 CONFIG *newc = new CONFIG;
96a9758165cd Initial revision
carl
parents:
diff changeset
1020 load_conf(*newc, "dnsbl.conf");
96a9758165cd Initial revision
carl
parents:
diff changeset
1021 newc->load_time = time(NULL);
96a9758165cd Initial revision
carl
parents:
diff changeset
1022 return newc;
96a9758165cd Initial revision
carl
parents:
diff changeset
1023 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1024
96a9758165cd Initial revision
carl
parents:
diff changeset
1025
96a9758165cd Initial revision
carl
parents:
diff changeset
1026 ////////////////////////////////////////////////
96a9758165cd Initial revision
carl
parents:
diff changeset
1027 // thread to watch the old config files for changes
96a9758165cd Initial revision
carl
parents:
diff changeset
1028 // and reload when needed. we also cleanup old
96a9758165cd Initial revision
carl
parents:
diff changeset
1029 // configs whose reference count has gone to zero.
96a9758165cd Initial revision
carl
parents:
diff changeset
1030 //
96a9758165cd Initial revision
carl
parents:
diff changeset
1031 static void* config_loader(void *arg);
96a9758165cd Initial revision
carl
parents:
diff changeset
1032 static void* config_loader(void *arg) {
96a9758165cd Initial revision
carl
parents:
diff changeset
1033 typedef set<CONFIG *> configp_set;
96a9758165cd Initial revision
carl
parents:
diff changeset
1034 configp_set old_configs;
18
041ea016b684 add scanning for bare hostnames
carl
parents: 16
diff changeset
1035 while (loader_run) {
0
96a9758165cd Initial revision
carl
parents:
diff changeset
1036 sleep(180); // look for modifications every 3 minutes
18
041ea016b684 add scanning for bare hostnames
carl
parents: 16
diff changeset
1037 if (!loader_run) break;
0
96a9758165cd Initial revision
carl
parents:
diff changeset
1038 CONFIG &dc = *config;
96a9758165cd Initial revision
carl
parents:
diff changeset
1039 time_t then = dc.load_time;
96a9758165cd Initial revision
carl
parents:
diff changeset
1040 struct stat st;
96a9758165cd Initial revision
carl
parents:
diff changeset
1041 bool reload = false;
96a9758165cd Initial revision
carl
parents:
diff changeset
1042 for (string_list::iterator i=dc.config_files.begin(); i!=dc.config_files.end(); i++) {
96a9758165cd Initial revision
carl
parents:
diff changeset
1043 char *fn = *i;
96a9758165cd Initial revision
carl
parents:
diff changeset
1044 if (stat(fn, &st)) reload = true; // file disappeared
96a9758165cd Initial revision
carl
parents:
diff changeset
1045 else if (st.st_mtime > then) reload = true; // file modified
96a9758165cd Initial revision
carl
parents:
diff changeset
1046 if (reload) break;
96a9758165cd Initial revision
carl
parents:
diff changeset
1047 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1048 if (reload) {
96a9758165cd Initial revision
carl
parents:
diff changeset
1049 CONFIG *newc = new_conf();
96a9758165cd Initial revision
carl
parents:
diff changeset
1050 // replace the global config pointer
96a9758165cd Initial revision
carl
parents:
diff changeset
1051 pthread_mutex_lock(&config_mutex);
96a9758165cd Initial revision
carl
parents:
diff changeset
1052 CONFIG *old = config;
96a9758165cd Initial revision
carl
parents:
diff changeset
1053 config = newc;
96a9758165cd Initial revision
carl
parents:
diff changeset
1054 pthread_mutex_unlock(&config_mutex);
96a9758165cd Initial revision
carl
parents:
diff changeset
1055 if (old) old_configs.insert(old);
96a9758165cd Initial revision
carl
parents:
diff changeset
1056 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1057 // now look for old configs with zero ref counts
96a9758165cd Initial revision
carl
parents:
diff changeset
1058 for (configp_set::iterator i=old_configs.begin(); i!=old_configs.end(); ) {
96a9758165cd Initial revision
carl
parents:
diff changeset
1059 CONFIG *old = *i;
96a9758165cd Initial revision
carl
parents:
diff changeset
1060 if (!old->reference_count) {
96a9758165cd Initial revision
carl
parents:
diff changeset
1061 delete old; // destructor does all the work
96a9758165cd Initial revision
carl
parents:
diff changeset
1062 old_configs.erase(i++);
96a9758165cd Initial revision
carl
parents:
diff changeset
1063 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1064 else i++;
96a9758165cd Initial revision
carl
parents:
diff changeset
1065 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1066 }
18
041ea016b684 add scanning for bare hostnames
carl
parents: 16
diff changeset
1067 return NULL;
0
96a9758165cd Initial revision
carl
parents:
diff changeset
1068 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1069
96a9758165cd Initial revision
carl
parents:
diff changeset
1070
96a9758165cd Initial revision
carl
parents:
diff changeset
1071 static void usage(char *prog);
96a9758165cd Initial revision
carl
parents:
diff changeset
1072 static void usage(char *prog)
96a9758165cd Initial revision
carl
parents:
diff changeset
1073 {
16
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
1074 fprintf(stderr, "Usage: %s [-d] [-c] -p socket-addr [-t timeout]\n", prog);
0
96a9758165cd Initial revision
carl
parents:
diff changeset
1075 fprintf(stderr, "where socket-addr is for the connection to sendmail and should be one of\n");
96a9758165cd Initial revision
carl
parents:
diff changeset
1076 fprintf(stderr, " inet:port@local-ip-address\n");
96a9758165cd Initial revision
carl
parents:
diff changeset
1077 fprintf(stderr, " local:local-domain-socket-file-name\n");
9
8c65411cd7ab integration work on url scanner
carl
parents: 8
diff changeset
1078 fprintf(stderr, "-c will load and dump the config to stdout\n");
16
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
1079 fprintf(stderr, "-d will add some syslog debug messages\n");
0
96a9758165cd Initial revision
carl
parents:
diff changeset
1080 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1081
96a9758165cd Initial revision
carl
parents:
diff changeset
1082
96a9758165cd Initial revision
carl
parents:
diff changeset
1083 int main(int argc, char**argv)
96a9758165cd Initial revision
carl
parents:
diff changeset
1084 {
3
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1085 bool check = false;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1086 bool setconn = false;
0
96a9758165cd Initial revision
carl
parents:
diff changeset
1087 int c;
16
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
1088 const char *args = "p:t:hcd";
0
96a9758165cd Initial revision
carl
parents:
diff changeset
1089 extern char *optarg;
96a9758165cd Initial revision
carl
parents:
diff changeset
1090
96a9758165cd Initial revision
carl
parents:
diff changeset
1091 // Process command line options
96a9758165cd Initial revision
carl
parents:
diff changeset
1092 while ((c = getopt(argc, argv, args)) != -1) {
96a9758165cd Initial revision
carl
parents:
diff changeset
1093 switch (c) {
96a9758165cd Initial revision
carl
parents:
diff changeset
1094 case 'p':
96a9758165cd Initial revision
carl
parents:
diff changeset
1095 if (optarg == NULL || *optarg == '\0') {
96a9758165cd Initial revision
carl
parents:
diff changeset
1096 fprintf(stderr, "Illegal conn: %s\n", optarg);
96a9758165cd Initial revision
carl
parents:
diff changeset
1097 exit(EX_USAGE);
96a9758165cd Initial revision
carl
parents:
diff changeset
1098 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1099 if (smfi_setconn(optarg) == MI_FAILURE) {
96a9758165cd Initial revision
carl
parents:
diff changeset
1100 fprintf(stderr, "smfi_setconn failed\n");
96a9758165cd Initial revision
carl
parents:
diff changeset
1101 exit(EX_SOFTWARE);
96a9758165cd Initial revision
carl
parents:
diff changeset
1102 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1103
96a9758165cd Initial revision
carl
parents:
diff changeset
1104 if (strncasecmp(optarg, "unix:", 5) == 0) unlink(optarg + 5);
96a9758165cd Initial revision
carl
parents:
diff changeset
1105 else if (strncasecmp(optarg, "local:", 6) == 0) unlink(optarg + 6);
3
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1106 setconn = true;
0
96a9758165cd Initial revision
carl
parents:
diff changeset
1107 break;
96a9758165cd Initial revision
carl
parents:
diff changeset
1108
96a9758165cd Initial revision
carl
parents:
diff changeset
1109 case 't':
96a9758165cd Initial revision
carl
parents:
diff changeset
1110 if (optarg == NULL || *optarg == '\0') {
96a9758165cd Initial revision
carl
parents:
diff changeset
1111 fprintf(stderr, "Illegal timeout: %s\n", optarg);
96a9758165cd Initial revision
carl
parents:
diff changeset
1112 exit(EX_USAGE);
96a9758165cd Initial revision
carl
parents:
diff changeset
1113 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1114 if (smfi_settimeout(atoi(optarg)) == MI_FAILURE) {
96a9758165cd Initial revision
carl
parents:
diff changeset
1115 fprintf(stderr, "smfi_settimeout failed\n");
96a9758165cd Initial revision
carl
parents:
diff changeset
1116 exit(EX_SOFTWARE);
96a9758165cd Initial revision
carl
parents:
diff changeset
1117 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1118 break;
96a9758165cd Initial revision
carl
parents:
diff changeset
1119
3
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1120 case 'c':
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1121 check = true;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1122 break;
7e1eb343a825 updates to use dcc conf files
carl
parents: 2
diff changeset
1123
16
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
1124 case 'd':
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
1125 debug_syslog = true;
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
1126 break;
2ae8d953f1d0 add scanning for bare hostnames
carl
parents: 14
diff changeset
1127
0
96a9758165cd Initial revision
carl
parents:
diff changeset
1128 case 'h':
96a9758165cd Initial revision
carl
parents:
diff changeset
1129 default:
96a9758165cd Initial revision
carl
parents:
diff changeset
1130 usage(argv[0]);
96a9758165cd Initial revision
carl
parents:
diff changeset
1131 exit(EX_USAGE);
96a9758165cd Initial revision
carl
parents:
diff changeset
1132 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1133 }
5
793ac9cc114d updates to use dcc conf files
carl
parents: 4
diff changeset
1134
793ac9cc114d updates to use dcc conf files
carl
parents: 4
diff changeset
1135 if (check) {
793ac9cc114d updates to use dcc conf files
carl
parents: 4
diff changeset
1136 CONFIG &dc = *new_conf();
793ac9cc114d updates to use dcc conf files
carl
parents: 4
diff changeset
1137 dumpit(dc);
793ac9cc114d updates to use dcc conf files
carl
parents: 4
diff changeset
1138 return 0;
793ac9cc114d updates to use dcc conf files
carl
parents: 4
diff changeset
1139 }
793ac9cc114d updates to use dcc conf files
carl
parents: 4
diff changeset
1140
0
96a9758165cd Initial revision
carl
parents:
diff changeset
1141 if (!setconn) {
96a9758165cd Initial revision
carl
parents:
diff changeset
1142 fprintf(stderr, "%s: Missing required -p argument\n", argv[0]);
96a9758165cd Initial revision
carl
parents:
diff changeset
1143 usage(argv[0]);
96a9758165cd Initial revision
carl
parents:
diff changeset
1144 exit(EX_USAGE);
96a9758165cd Initial revision
carl
parents:
diff changeset
1145 }
5
793ac9cc114d updates to use dcc conf files
carl
parents: 4
diff changeset
1146
0
96a9758165cd Initial revision
carl
parents:
diff changeset
1147 if (smfi_register(smfilter) == MI_FAILURE) {
96a9758165cd Initial revision
carl
parents:
diff changeset
1148 fprintf(stderr, "smfi_register failed\n");
96a9758165cd Initial revision
carl
parents:
diff changeset
1149 exit(EX_UNAVAILABLE);
96a9758165cd Initial revision
carl
parents:
diff changeset
1150 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1151
96a9758165cd Initial revision
carl
parents:
diff changeset
1152 // switch to background mode
96a9758165cd Initial revision
carl
parents:
diff changeset
1153 if (daemon(1,0) < 0) {
96a9758165cd Initial revision
carl
parents:
diff changeset
1154 fprintf(stderr, "daemon() call failed\n");
96a9758165cd Initial revision
carl
parents:
diff changeset
1155 exit(EX_UNAVAILABLE);
96a9758165cd Initial revision
carl
parents:
diff changeset
1156 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1157
96a9758165cd Initial revision
carl
parents:
diff changeset
1158 // initialize the thread sync objects
96a9758165cd Initial revision
carl
parents:
diff changeset
1159 pthread_mutex_init(&config_mutex, 0);
96a9758165cd Initial revision
carl
parents:
diff changeset
1160 pthread_mutex_init(&syslog_mutex, 0);
96a9758165cd Initial revision
carl
parents:
diff changeset
1161 pthread_mutex_init(&resolve_mutex, 0);
96a9758165cd Initial revision
carl
parents:
diff changeset
1162
96a9758165cd Initial revision
carl
parents:
diff changeset
1163 // load the initial config
96a9758165cd Initial revision
carl
parents:
diff changeset
1164 config = new_conf();
96a9758165cd Initial revision
carl
parents:
diff changeset
1165
96a9758165cd Initial revision
carl
parents:
diff changeset
1166 // only create threads after the fork() in daemon
96a9758165cd Initial revision
carl
parents:
diff changeset
1167 pthread_t tid;
96a9758165cd Initial revision
carl
parents:
diff changeset
1168 if (pthread_create(&tid, 0, config_loader, 0))
96a9758165cd Initial revision
carl
parents:
diff changeset
1169 my_syslog("failed to create config loader thread");
96a9758165cd Initial revision
carl
parents:
diff changeset
1170 if (pthread_detach(tid))
96a9758165cd Initial revision
carl
parents:
diff changeset
1171 my_syslog("failed to detach config loader thread");
96a9758165cd Initial revision
carl
parents:
diff changeset
1172
96a9758165cd Initial revision
carl
parents:
diff changeset
1173 // write the pid
96a9758165cd Initial revision
carl
parents:
diff changeset
1174 const char *pidpath = "/var/run/dnsbl.pid";
96a9758165cd Initial revision
carl
parents:
diff changeset
1175 unlink(pidpath);
96a9758165cd Initial revision
carl
parents:
diff changeset
1176 FILE *f = fopen(pidpath, "w");
96a9758165cd Initial revision
carl
parents:
diff changeset
1177 if (f) {
22
c21b888cc175 fix restart code, add ifdef for linux pid issues
carl
parents: 18
diff changeset
1178 #ifdef linux
c21b888cc175 fix restart code, add ifdef for linux pid issues
carl
parents: 18
diff changeset
1179 // from a comment in the DCC source code:
c21b888cc175 fix restart code, add ifdef for linux pid issues
carl
parents: 18
diff changeset
1180 // Linux threads are broken. Signals given the
c21b888cc175 fix restart code, add ifdef for linux pid issues
carl
parents: 18
diff changeset
1181 // original process are delivered to only the
c21b888cc175 fix restart code, add ifdef for linux pid issues
carl
parents: 18
diff changeset
1182 // thread that happens to have that PID. The
c21b888cc175 fix restart code, add ifdef for linux pid issues
carl
parents: 18
diff changeset
1183 // sendmail libmilter thread that needs to hear
c21b888cc175 fix restart code, add ifdef for linux pid issues
carl
parents: 18
diff changeset
1184 // SIGINT and other signals does not, and that breaks
c21b888cc175 fix restart code, add ifdef for linux pid issues
carl
parents: 18
diff changeset
1185 // scripts that need to stop milters.
c21b888cc175 fix restart code, add ifdef for linux pid issues
carl
parents: 18
diff changeset
1186 // However, signaling the process group works.
0
96a9758165cd Initial revision
carl
parents:
diff changeset
1187 fprintf(f, "-%d\n", (u_int)getpgrp());
22
c21b888cc175 fix restart code, add ifdef for linux pid issues
carl
parents: 18
diff changeset
1188 #else
c21b888cc175 fix restart code, add ifdef for linux pid issues
carl
parents: 18
diff changeset
1189 fprintf(f, "%d\n", (u_int)getpid());
c21b888cc175 fix restart code, add ifdef for linux pid issues
carl
parents: 18
diff changeset
1190 #endif
0
96a9758165cd Initial revision
carl
parents:
diff changeset
1191 fclose(f);
96a9758165cd Initial revision
carl
parents:
diff changeset
1192 }
96a9758165cd Initial revision
carl
parents:
diff changeset
1193
18
041ea016b684 add scanning for bare hostnames
carl
parents: 16
diff changeset
1194 time_t starting = time(NULL);
041ea016b684 add scanning for bare hostnames
carl
parents: 16
diff changeset
1195 int rc = smfi_main();
22
c21b888cc175 fix restart code, add ifdef for linux pid issues
carl
parents: 18
diff changeset
1196 if ((rc != MI_SUCCESS) && (time(NULL) > starting+5*60)) {
18
041ea016b684 add scanning for bare hostnames
carl
parents: 16
diff changeset
1197 my_syslog("trying to restart after smfi_main()");
041ea016b684 add scanning for bare hostnames
carl
parents: 16
diff changeset
1198 loader_run = false; // eventually the config loader thread will terminate
041ea016b684 add scanning for bare hostnames
carl
parents: 16
diff changeset
1199 execvp(argv[0], argv);
041ea016b684 add scanning for bare hostnames
carl
parents: 16
diff changeset
1200 }
041ea016b684 add scanning for bare hostnames
carl
parents: 16
diff changeset
1201 exit((rc == MI_SUCCESS) ? 0 : EX_UNAVAILABLE);
0
96a9758165cd Initial revision
carl
parents:
diff changeset
1202 }
8
dbe18921f741 integration work on url scanner
carl
parents: 5
diff changeset
1203