/[imapfilter]/imapfilter/imapfilter.c
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Contents of /imapfilter/imapfilter.c

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Revision 1.41 - (show annotations)
Fri Feb 21 18:43:01 2003 UTC (21 years, 1 month ago) by lefcha
Branch: MAIN
Changes since 1.40: +2 -0 lines
File MIME type: text/plain
Added funtion get authentication mechanisms available.

1 #include <stdio.h>
2 #include <stdlib.h>
3 #include <unistd.h>
4 #include <string.h>
5 #include <limits.h>
6 #include <errno.h>
7 #include <setjmp.h>
8 #include <locale.h>
9
10 #include "config.h"
11 #include "imapfilter.h"
12 #include "data.h"
13
14 #if defined SSL_TLS || defined ENCRYPTED_PASSWORDS
15 #include <openssl/crypto.h>
16 #endif
17
18
19 extern int sockpri;
20 extern account_t *accounts;
21 extern filter_t *filters;
22 extern namesp_t nsppri;
23
24 unsigned int options; /* Program options. */
25 unsigned int flags = 0; /* Program flags. */
26 unsigned int capabilities; /* Capabilities of mail server. */
27 unsigned int interval = 0; /* Poll at the specified interval. */
28
29 char authmech[AUTH_MECH_LEN]; /* Authentication mechanisms. */
30 char logfile[PATH_MAX]; /* Log file. */
31 char *home = NULL; /* User's home directory. */
32 char charset[CHARSET_LEN]; /* Charset for IMAP SEARCH requests. */
33 #ifdef MEMORY_LOCK
34 uid_t ruid, euid; /* Real and effective UID. */
35 #endif
36 jmp_buf acctloop;
37
38
39 /*
40 * In the beginning there was main()...
41 */
42 int main(int argc, char *argv[])
43 {
44 int c, r, f = 0;
45 pid_t pid;
46 char *confile = NULL; /* Configuration file. */
47 account_t *ca; /* Current account. */
48 mbox_t *cm; /* Current mailbox. */
49
50 #ifdef MEMORY_LOCK
51 ruid = getuid();
52 euid = geteuid();
53 seteuid(ruid); /* Drop root privileges. */
54 #endif
55
56 setlocale(LC_CTYPE, "");
57
58 home = getenv("HOME");
59 options = (OPTION_DETAILS_NORMAL | OPTION_NAMESPACE | OPTION_WARNING);
60 *charset = 0;
61 *logfile = 0;
62
63 while ((c = getopt(argc, argv, "c:d:hkl:"
64 #ifdef ENCRYPTED_PASSWORDS
65 "p"
66 #endif
67 "qvV")) != -1) {
68 switch (c) {
69 case 'c':
70 confile = optarg;
71 break;
72 case 'd':
73 options |= OPTION_DAEMON_MODE;
74 errno = 0;
75 interval = strtoul(optarg, NULL, 10);
76 if (errno)
77 interval = 0;
78 break;
79 case 'h':
80 usage();
81 exit(ERROR_UNDEFINED);
82 break;
83 case 'k':
84 kill_imapfilter();
85 break;
86 case 'l':
87 strncat(logfile, optarg, PATH_MAX - 1);
88 break;
89 #ifdef ENCRYPTED_PASSWORDS
90 case 'p':
91 options |= OPTION_PASSWORD_EDITOR;
92 break;
93 #endif
94 case 'q':
95 options &= OPTION_DETAILS_CLEAR;
96 options |= OPTION_DETAILS_QUIET;
97 break;
98 case 'v':
99 options &= OPTION_DETAILS_CLEAR;
100 options |= OPTION_DETAILS_VERBOSE;
101 break;
102 case 'V':
103 version();
104 exit(ERROR_UNDEFINED);
105 break;
106 default:
107 usage();
108 exit(ERROR_UNDEFINED);
109 break;
110 }
111 }
112
113 create_homedir();
114
115 lockfile_check();
116 lockfile_create();
117
118 corefile_disable();
119
120 tty_store();
121 catch_signals();
122
123 read_config(confile);
124
125 #ifdef ENCRYPTED_PASSWORDS
126 read_passwords();
127
128 if ((options & OPTION_PASSWORD_EDITOR)) {
129 password_editor();
130
131 secmem_clear();
132 lockfile_remove();
133
134 exit(0);
135 }
136 #endif
137
138 open_logfile();
139
140 init_vbuf();
141
142 if (options & OPTION_DAEMON_MODE) {
143 f = 1;
144 options &= OPTION_DETAILS_CLEAR;
145 options |= OPTION_DETAILS_QUIET;
146 }
147 do {
148 for (ca = accounts; ca; ca = ca->next) {
149
150 if (setjmp(acctloop))
151 continue;
152
153 if (init_connection(&sockpri, ca->server, ca->port, ca->ssl))
154 continue;
155
156 r = greeting_response(&sockpri);
157
158 if (check_capabilities(&sockpri))
159 continue;
160
161 #ifdef DEBUG
162 test(&sockpri);
163 #endif
164
165 if (r != RESPONSE_PREAUTH) {
166 if (ca->passwdattr == PASSWORD_NONE) {
167 printf("Enter password for %s@%s: ", ca->username,
168 ca->server);
169 get_password(ca->password, PASSWORD_LEN);
170 ca->passwdattr = PASSWORD_PLAIN;
171 }
172 if (login(&sockpri, ca->username, ca->password) ==
173 RESPONSE_NO) {
174 error("imapfilter: username %s or password rejected "
175 "at %s\n", ca->username, ca->server);
176 continue;
177 }
178 }
179 check_namespace(&sockpri, &nsppri);
180
181 for (cm = ca->mboxes; cm; cm = cm->next)
182 if (!*cm->filters)
183 mailbox_status(&sockpri, cm->name, &nsppri);
184 else if (!select_mailbox(&sockpri, cm->name, &nsppri)) {
185 apply_filters(cm->filters);
186 close_mailbox(&sockpri);
187 }
188 logout(&sockpri);
189
190 close_connection(&sockpri);
191 }
192
193 /* Fork if in daemon mode. */
194 if (f) {
195 f = 0;
196 pid = fork();
197 switch (pid) {
198 case -1:
199 fatal(ERROR_FORK, "imapfilter: forking; %s\n", strerror(errno));
200 break;
201 case 0:
202 #ifdef MEMORY_LOCK
203 secmem_lock();
204 setuid(ruid); /* Capability to regain root privileges will
205 not be needed any more. */
206 #endif
207 lockfile_create();
208 corefile_disable();
209 break;
210 default:
211 secmem_clear();
212 close_logfile();
213 exit(0);
214 break;
215 }
216 }
217 if (interval)
218 sleep(interval);
219 } while (options & OPTION_DAEMON_MODE && interval);
220
221 secmem_clear();
222 close_logfile();
223
224 lockfile_remove();
225
226 exit(0);
227 }
228
229
230 /*
231 * Print a very brief usage message.
232 */
233 void usage(void)
234 {
235 fprintf(stderr,
236 "usage: imapfilter [-hk"
237 #ifdef ENCRYPTED_PASSWORDS
238 "p"
239 #endif
240 "qvV] [-c configfile] [-d interval] [-l logfile]\n");
241 }
242
243
244 /*
245 * Print program's version, and if it is built in, OpenSSL's version number.
246 */
247 void version(void)
248 {
249 fprintf(stderr, "IMAPFilter %s"
250 #if defined SSL_TLS || defined ENCRYPTED_PASSWORDS
251 ", OpenSSL 0x%8.8lx"
252 #endif
253 "\n", IMAPFILTER_VERSION
254 #if defined SSL_TLS || defined ENCRYPTED_PASSWORDS
255 ,SSLeay()
256 #endif
257 );
258 }

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