/[imapfilter]/imapfilter/imapfilter.c
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Annotation of /imapfilter/imapfilter.c

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Revision 1.67 - (hide annotations)
Fri Feb 13 13:03:00 2004 UTC (20 years, 1 month ago) by lefcha
Branch: MAIN
Changes since 1.66: +4 -2 lines
File MIME type: text/plain
Move switch(getopt()) default tag.

1 lefcha 1.1 #include <stdio.h>
2 lefcha 1.53 #include <stdlib.h>
3 lefcha 1.55 #include <sys/types.h>
4     #include <unistd.h>
5 lefcha 1.52 #include <string.h>
6     #include <errno.h>
7 lefcha 1.7 #include <limits.h>
8 lefcha 1.58 #include <fcntl.h>
9 lefcha 1.35 #include <setjmp.h>
10 lefcha 1.40 #include <locale.h>
11 lefcha 1.1
12 lefcha 1.39 #include "config.h"
13     #include "imapfilter.h"
14 lefcha 1.52 #include "version.h"
15     #include "account.h"
16     #include "filter.h"
17     #include "buffer.h"
18 lefcha 1.39
19 lefcha 1.53 #if defined SSL_TLS || defined ENCRYPTED_PASSWORDS || defined CRAM_MD5
20 lefcha 1.55 #include <openssl/opensslv.h>
21 lefcha 1.38 #include <openssl/crypto.h>
22     #endif
23 lefcha 1.1
24    
25 lefcha 1.7 extern account_t *accounts;
26 lefcha 1.11 extern filter_t *filters;
27 lefcha 1.50 extern buffer_t ibuf, obuf;
28 lefcha 1.7
29 lefcha 1.67 options_t opts; /* Program options. */
30 lefcha 1.29 unsigned int flags = 0; /* Program flags. */
31 lefcha 1.64
32 lefcha 1.65 connection_t connpri, connaux; /* Primary and auxiliary IMAP connection. */
33 lefcha 1.41
34 lefcha 1.25 char *home = NULL; /* User's home directory. */
35 lefcha 1.42
36 lefcha 1.46 jmp_buf acctloop; /* Non-local exit in case of network error. */
37 lefcha 1.1
38 lefcha 1.29
39 lefcha 1.66 void imapfilter(void);
40     void daemonize(void);
41 lefcha 1.52 void usage(void);
42     void version(void);
43    
44    
45 lefcha 1.2 /*
46 lefcha 1.46 * IMAPFilter: an IMAP mail filtering utility.
47 lefcha 1.2 */
48 lefcha 1.42 int
49     main(int argc, char *argv[])
50 lefcha 1.1 {
51 lefcha 1.66 int c;
52     char *cf;
53 lefcha 1.33
54 lefcha 1.45 setlocale(LC_ALL, "");
55 lefcha 1.40
56 lefcha 1.64 opts.debug = 0;
57     opts.verbosity = 0;
58     opts.timeout = -1;
59     opts.daemon = 0;
60     opts.headers = 0;
61     opts.errors = 0;
62     opts.namespace = 1;
63     opts.expunge = 0;
64     opts.subscribe = 0;
65     opts.peek = 1;
66     opts.passwd_editor = 0;
67     opts.charset[0] = '\0';
68     opts.logfile[0] = '\0';
69    
70 lefcha 1.42 home = getenv("HOME");
71 lefcha 1.64 cf = NULL;
72 lefcha 1.55 connpri.sock = connaux.sock = -1;
73 lefcha 1.33
74 lefcha 1.63 while ((c = getopt(argc, argv, "DVc:d:kl:"
75 lefcha 1.29 #ifdef ENCRYPTED_PASSWORDS
76 lefcha 1.42 "p"
77 lefcha 1.25 #endif
78 lefcha 1.63 "qv")) != -1) {
79 lefcha 1.42 switch (c) {
80 lefcha 1.63 case 'D':
81 lefcha 1.64 if (opts.debug < 2)
82     opts.debug++;
83 lefcha 1.63 break;
84     case 'V':
85     version();
86     /* NOTREACHED */
87 lefcha 1.42 case 'c':
88 lefcha 1.64 cf = optarg;
89 lefcha 1.42 break;
90     case 'd':
91     errno = 0;
92 lefcha 1.64 opts.daemon = strtoul(optarg, NULL, 10);
93 lefcha 1.42 if (errno)
94 lefcha 1.64 opts.daemon = 0;
95 lefcha 1.42 break;
96     case 'k':
97     kill_imapfilter();
98     break;
99     case 'l':
100 lefcha 1.64 strncat(opts.logfile, optarg, PATH_MAX - 1);
101 lefcha 1.42 break;
102 lefcha 1.25 #ifdef ENCRYPTED_PASSWORDS
103 lefcha 1.42 case 'p':
104 lefcha 1.64 opts.passwd_editor = 1;
105 lefcha 1.42 break;
106     #endif
107     case 'q':
108 lefcha 1.64 if (opts.verbosity > -2)
109     opts.verbosity--;
110 lefcha 1.42 break;
111     case 'v':
112 lefcha 1.64 if (opts.verbosity < 2)
113     opts.verbosity++;
114 lefcha 1.42 break;
115 lefcha 1.67 case '?':
116 lefcha 1.42 default:
117     usage();
118 lefcha 1.63 /* NOTREACHED */
119 lefcha 1.42 }
120 lefcha 1.1 }
121 lefcha 1.32
122 lefcha 1.60 debug_start();
123    
124 lefcha 1.42 create_homedir();
125 lefcha 1.33
126 lefcha 1.42 lockfile_check();
127     lockfile_create();
128 lefcha 1.28
129 lefcha 1.64 if (!opts.debug)
130 lefcha 1.60 corefile_disable();
131 lefcha 1.33
132 lefcha 1.42 tty_store();
133 lefcha 1.67
134 lefcha 1.42 catch_signals();
135 lefcha 1.24
136 lefcha 1.64 read_config(cf);
137 lefcha 1.33
138 lefcha 1.25 #ifdef ENCRYPTED_PASSWORDS
139 lefcha 1.42 read_passwords();
140 lefcha 1.33
141 lefcha 1.64 if (opts.passwd_editor) {
142 lefcha 1.42 password_editor();
143 lefcha 1.33
144 lefcha 1.42 secmem_clear();
145     lockfile_remove();
146 lefcha 1.33
147 lefcha 1.42 exit(0);
148     }
149 lefcha 1.25 #endif
150 lefcha 1.33
151 lefcha 1.60 log_start();
152 lefcha 1.32
153 lefcha 1.65 buffer_init(&ibuf);
154     buffer_init(&obuf);
155 lefcha 1.32
156 lefcha 1.64 if (opts.daemon)
157     opts.verbosity = -2;
158 lefcha 1.62
159 lefcha 1.42 do {
160 lefcha 1.66 imapfilter();
161 lefcha 1.7
162 lefcha 1.66 if (opts.daemon && !(flags & FLAG_DAEMON))
163     daemonize();
164     if (opts.daemon && flags & FLAG_SIGUSR1) {
165     reread_config(cf);
166     continue;
167     }
168     if (opts.daemon > 0)
169     sleep(opts.daemon);
170     } while (opts.daemon);
171    
172     log_stop();
173 lefcha 1.67
174 lefcha 1.66 secmem_clear();
175    
176     lockfile_remove();
177    
178     debug_stop();
179    
180     exit(0);
181     }
182    
183    
184     /*
185     * Go through all accounts and apply filters to mailboxes as defined.
186     */
187     void
188     imapfilter(void)
189     {
190     int r;
191     account_t *ca;
192     mbox_t *cm;
193    
194     for (ca = accounts; ca != NULL; ca = ca->next) {
195    
196     if (setjmp(acctloop))
197     continue;
198 lefcha 1.35
199 lefcha 1.66 if (init_connection(&connpri, ca->server, ca->port,
200     ca->ssl))
201     continue;
202 lefcha 1.21
203 lefcha 1.66 r = response_greeting(&connpri);
204 lefcha 1.18
205 lefcha 1.66 if (opts.debug)
206     test(&connpri);
207 lefcha 1.45
208 lefcha 1.66 if (check_capabilities(&connpri))
209     continue;
210 lefcha 1.1
211 lefcha 1.49 #ifdef SSL_TLS
212 lefcha 1.66 if (ca->ssl == SSL_DISABLED &&
213     connpri.caps & CAPS_STARTTLS)
214     if (negotiate_tls(&connpri) == RESPONSE_OK)
215     check_capabilities(&connpri);
216 lefcha 1.49 #endif
217    
218 lefcha 1.66 log_info(LOG_ACCOUNT, ca->key);
219 lefcha 1.1
220 lefcha 1.66 if (r != RESPONSE_PREAUTH) {
221     if (ca->pass_attr == PASS_ATTR_NONE) {
222     printf("Enter password for %s@%s: ",
223     ca->user, ca->server);
224     get_password(ca->pass, PASS_LEN);
225     ca->pass_attr = PASS_ATTR_PLAIN;
226     }
227 lefcha 1.48 #ifdef CRAM_MD5
228 lefcha 1.66 if (connpri.caps & CAPS_CRAMMD5)
229     r = auth_cram_md5(&connpri,
230     ca->user, ca->pass);
231     else
232 lefcha 1.48 #endif
233 lefcha 1.66 r = login(&connpri, ca->user,
234     ca->pass);
235 lefcha 1.48
236 lefcha 1.66 if (r == RESPONSE_NO) {
237     error("username %s or password rejected "
238     "at %s\n", ca->user, ca->server);
239     continue;
240 lefcha 1.42 }
241 lefcha 1.33 }
242 lefcha 1.66 check_namespace(&connpri);
243 lefcha 1.11
244 lefcha 1.66 for (cm = ca->mboxes; cm != NULL; cm = cm->next)
245     if (*cm->filters == NULL)
246     mailbox_status(&connpri, cm->name);
247     else if (!select_mailbox(&connpri, cm->name)) {
248     apply_filters(cm->name, cm->filters);
249     close_mailbox(&connpri);
250 lefcha 1.58 }
251 lefcha 1.66 logout(&connpri);
252 lefcha 1.58
253 lefcha 1.66 close_connection(&connpri);
254     }
255     }
256 lefcha 1.58
257    
258 lefcha 1.66 /*
259     * Fork if in daemon mode.
260     */
261     void
262     daemonize(void)
263     {
264 lefcha 1.17
265 lefcha 1.66 switch (fork()) {
266     case -1:
267     fatal(ERROR_FORK, "forking; %s\n",
268     strerror(errno));
269     break;
270     case 0:
271     break;
272     default:
273     log_stop();
274     secmem_clear();
275     debug_stop();
276     exit(0);
277     break;
278     }
279 lefcha 1.33
280 lefcha 1.66 if (setsid() == -1)
281     fatal(ERROR_FORK, "creating session; %s\n",
282     strerror(errno));
283    
284     switch (fork()) {
285     case -1:
286     fatal(ERROR_FORK, "forking; %s\n",
287     strerror(errno));
288     break;
289     case 0:
290     break;
291     default:
292     log_stop();
293     secmem_clear();
294     debug_stop();
295     exit(0);
296     break;
297     }
298 lefcha 1.33
299 lefcha 1.66 close(STDIN_FILENO);
300     close(STDOUT_FILENO);
301     close(STDERR_FILENO);
302     if (open("/dev/null", O_RDWR) != -1) {
303     dup(STDIN_FILENO);
304     dup(STDIN_FILENO);
305     }
306     lockfile_create();
307     corefile_disable();
308 lefcha 1.60
309 lefcha 1.66 flags |= FLAG_DAEMON;
310 lefcha 1.1 }
311    
312    
313     /*
314 lefcha 1.11 * Print a very brief usage message.
315 lefcha 1.2 */
316 lefcha 1.42 void
317     usage(void)
318 lefcha 1.2 {
319 lefcha 1.66
320 lefcha 1.42 fprintf(stderr,
321 lefcha 1.63 "usage: imapfilter [-DVbk"
322 lefcha 1.26 #ifdef ENCRYPTED_PASSWORDS
323     "p"
324 lefcha 1.33 #endif
325 lefcha 1.63 "qv] [-c configfile] [-d interval] [-l logfile]\n");
326    
327     exit(ERROR_UNDEFINED);
328 lefcha 1.38 }
329    
330    
331     /*
332     * Print program's version, and if it is built in, OpenSSL's version number.
333     */
334 lefcha 1.42 void
335     version(void)
336 lefcha 1.38 {
337 lefcha 1.66
338 lefcha 1.42 fprintf(stderr, "IMAPFilter %s"
339 lefcha 1.53 #if defined SSL_TLS || defined ENCRYPTED_PASSWORDS || defined CRAM_MD5
340 lefcha 1.38 ", OpenSSL 0x%8.8lx"
341     #endif
342     "\n", IMAPFILTER_VERSION
343 lefcha 1.53 #if defined SSL_TLS || defined ENCRYPTED_PASSWORDS || defined CRAM_MD5
344 lefcha 1.38 ,SSLeay()
345     #endif
346 lefcha 1.42 );
347 lefcha 1.63
348     exit(ERROR_UNDEFINED);
349 lefcha 1.1 }

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