1 |
#include <stdio.h> |
2 |
#include <string.h> |
3 |
#include <stdlib.h> |
4 |
#include <unistd.h> |
5 |
#include <errno.h> |
6 |
|
7 |
#include "config.h" |
8 |
#include "imapfilter.h" |
9 |
#include "imap.h" |
10 |
#include "connect.h" |
11 |
#include "log.h" |
12 |
|
13 |
|
14 |
extern int sock; |
15 |
extern account_t *accounts; |
16 |
extern filter_t *dfilters, *afilters; |
17 |
extern unsigned int options; |
18 |
extern unsigned int dlimit, alimit; |
19 |
|
20 |
static int tag = 0xA000; /* Every IMAP command is prefixed with a |
21 |
unique [:alnum:] string. */ |
22 |
|
23 |
|
24 |
/* |
25 |
* Sends to server data; a command. |
26 |
*/ |
27 |
int send_command(char *cmd) |
28 |
{ |
29 |
|
30 |
#ifdef DEBUG |
31 |
printf("debug: sending command: %s", cmd); |
32 |
#endif |
33 |
|
34 |
if (write(sock, cmd, strlen(cmd)) == -1) { |
35 |
error("imapfilter: error while sending command; %s", |
36 |
strerror(errno)); |
37 |
return 1; |
38 |
} |
39 |
|
40 |
return 0; |
41 |
} |
42 |
|
43 |
|
44 |
#ifdef DEBUG |
45 |
/* |
46 |
* IMAP NOOP: does nothing always succeeds. |
47 |
*/ |
48 |
int imap_noop(void) |
49 |
{ |
50 |
char cmd[SMALL_CMD]; |
51 |
|
52 |
verbose("Client request: NOOP\n"); |
53 |
|
54 |
snprintf(cmd, SMALL_CMD, "%X NOOP\r\n", tag++); |
55 |
|
56 |
if (!send_command(cmd) && !clear_stream()) |
57 |
return 0; |
58 |
else |
59 |
return 1; |
60 |
} |
61 |
#endif |
62 |
|
63 |
|
64 |
/* |
65 |
* IMAP LOGOUT: informs server that client is done. |
66 |
*/ |
67 |
int imap_logout(void) |
68 |
{ |
69 |
char cmd[SMALL_CMD]; |
70 |
|
71 |
verbose("Client request: LOGOUT\n"); |
72 |
|
73 |
snprintf(cmd, SMALL_CMD, "%X LOGOUT\r\n", tag++); |
74 |
|
75 |
if (!send_command(cmd) && !clear_stream()) |
76 |
return 0; |
77 |
else |
78 |
return 1; |
79 |
} |
80 |
|
81 |
|
82 |
/* |
83 |
* IMAP LOGIN: identifies client to server. |
84 |
*/ |
85 |
int imap_login(account_t * ca) |
86 |
{ |
87 |
char cmd[MEDIUM_CMD]; |
88 |
|
89 |
verbose("Client request: LOGIN\n"); |
90 |
|
91 |
snprintf(cmd, MEDIUM_CMD, "%X LOGIN \"%s\" \"%s\"\r\n", |
92 |
tag++, ca->userid, ca->passwd); |
93 |
|
94 |
if (!send_command(cmd) && !clear_stream()) |
95 |
return 0; |
96 |
else |
97 |
return 1; |
98 |
} |
99 |
|
100 |
|
101 |
/* |
102 |
* IMAP SELECT: selects a mailbox in which messages can be accessed. |
103 |
*/ |
104 |
int imap_select(void) |
105 |
{ |
106 |
char cmd[SMALL_CMD]; |
107 |
|
108 |
verbose("Client request: SELECT\n"); |
109 |
|
110 |
snprintf(cmd, SMALL_CMD, "%X SELECT INBOX\r\n", tag++); |
111 |
|
112 |
if (!send_command(cmd) && !clear_stream()) |
113 |
return 0; |
114 |
else |
115 |
return 1; |
116 |
} |
117 |
|
118 |
|
119 |
/* |
120 |
* IMAP STATUS: requests status of the indicated mailbox. |
121 |
*/ |
122 |
int imap_status(void) |
123 |
{ |
124 |
char cmd[MEDIUM_CMD]; |
125 |
|
126 |
verbose("Client request: STATUS\n"); |
127 |
|
128 |
snprintf(cmd, MEDIUM_CMD, |
129 |
"%X STATUS INBOX (MESSAGES RECENT UNSEEN)\r\n", tag++); |
130 |
|
131 |
if (!send_command(cmd) && !status_response()) |
132 |
return 0; |
133 |
else |
134 |
return 1; |
135 |
} |
136 |
|
137 |
|
138 |
/* |
139 |
* IMAP SEARCH: searches the mailbox for messages that match certain criteria. |
140 |
*/ |
141 |
int imap_search(char *res) |
142 |
{ |
143 |
char cmd[BIG_CMD]; |
144 |
|
145 |
verbose("Client request: SEARCH\n"); |
146 |
|
147 |
gen_search_filters(cmd); |
148 |
if (send_command(cmd) || search_response(res)) |
149 |
return 1; |
150 |
|
151 |
verbose("Client request: SEARCH\n"); |
152 |
|
153 |
if (alimit && afilters) { |
154 |
gen_search_limits(cmd); |
155 |
if (send_command(cmd) || search_response(res)) |
156 |
return 1; |
157 |
} |
158 |
|
159 |
return 0; |
160 |
} |
161 |
|
162 |
|
163 |
/* |
164 |
* IMAP FETCH: retrieves data associated with a message. |
165 |
*/ |
166 |
int imap_fetch(unsigned int msg, char *res) |
167 |
{ |
168 |
char cmd[MEDIUM_CMD]; |
169 |
|
170 |
verbose("Client request: FETCH\n"); |
171 |
|
172 |
snprintf(cmd, MEDIUM_CMD, |
173 |
"%X FETCH %d BODY[HEADER.FIELDS (\"DATE\" \"FROM\" \"SUBJECT\")]\r\n", |
174 |
tag++, msg); |
175 |
|
176 |
if (!send_command(cmd) && !fetch_response(res)) |
177 |
return 0; |
178 |
else |
179 |
return 1; |
180 |
} |
181 |
|
182 |
|
183 |
/* |
184 |
* IMAP STORE: alters data associated with a message. |
185 |
*/ |
186 |
int imap_store(unsigned int msg) |
187 |
{ |
188 |
char cmd[MEDIUM_CMD]; |
189 |
|
190 |
verbose("Client request: STORE\n"); |
191 |
|
192 |
snprintf(cmd, MEDIUM_CMD, |
193 |
"%X STORE %d +FLAGS \\Deleted\r\n", tag++, msg); |
194 |
|
195 |
if (!send_command(cmd) && !clear_stream()) |
196 |
return 0; |
197 |
else |
198 |
return 1; |
199 |
} |
200 |
|
201 |
|
202 |
/* |
203 |
* IMAP EXPUNGE: premanently removes any messages with the \Deleted flag set. |
204 |
*/ |
205 |
int imap_expunge(void) |
206 |
{ |
207 |
char cmd[SMALL_CMD]; |
208 |
|
209 |
verbose("Client request: EXPUNGE\n"); |
210 |
|
211 |
snprintf(cmd, SMALL_CMD, "%X EXPUNGE\r\n", tag++); |
212 |
|
213 |
if (!send_command(cmd) && !clear_stream()) |
214 |
return 0; |
215 |
else |
216 |
return 1; |
217 |
} |
218 |
|
219 |
|
220 |
/* |
221 |
* Prepares according to the filters defined by the user the IMAP SEARCH |
222 |
* command that will be sent. This command will search for DENY, ALLOW, |
223 |
* and DENY_LIMIT filters. |
224 |
*/ |
225 |
void gen_search_filters(char *cmd) |
226 |
{ |
227 |
int len; |
228 |
|
229 |
snprintf(cmd, BIG_CMD, "%X SEARCH", tag++); |
230 |
|
231 |
gen_deny_filters(cmd); |
232 |
|
233 |
if (dlimit) { |
234 |
len = strlen(cmd); |
235 |
snprintf(cmd + len, BIG_CMD - len, " LARGER %d", dlimit); |
236 |
} else if (!dfilters) { /* If no DENY filters were defined, then |
237 |
deny all except the ALLOW filters. */ |
238 |
len = strlen(cmd); |
239 |
snprintf(cmd + len, BIG_CMD - len, " ALL"); |
240 |
} |
241 |
|
242 |
gen_allow_filters(cmd, "NOT"); |
243 |
|
244 |
if (options & OPT_UNSEEN_ONLY) { |
245 |
len = strlen(cmd); |
246 |
snprintf(cmd + len, BIG_CMD - len, " UNSEEN"); |
247 |
} |
248 |
|
249 |
len = strlen(cmd); |
250 |
snprintf(cmd + len, BIG_CMD - len, "\r\n"); |
251 |
} |
252 |
|
253 |
|
254 |
/* |
255 |
* Prepares according to the filters defined by the user the IMAP SEARCH |
256 |
* command that will be sent. This command will search for the ALLOW_LIMIT |
257 |
* filter. |
258 |
*/ |
259 |
void gen_search_limits(char *cmd) |
260 |
{ |
261 |
int len; |
262 |
|
263 |
snprintf(cmd, BIG_CMD, "%X SEARCH", tag++); |
264 |
|
265 |
gen_allow_filters(cmd, "OR"); |
266 |
|
267 |
len = strlen(cmd); |
268 |
snprintf(cmd + len, BIG_CMD - len, " LARGER %d", alimit); |
269 |
|
270 |
if (options & OPT_UNSEEN_ONLY) { |
271 |
len = strlen(cmd); |
272 |
snprintf(cmd + len, BIG_CMD - len, " UNSEEN"); |
273 |
} |
274 |
|
275 |
len = strlen(cmd); |
276 |
snprintf(cmd + len, BIG_CMD - len, "\r\n"); |
277 |
|
278 |
} |
279 |
|
280 |
|
281 |
/* |
282 |
* Adds to the IMAP SEARCH command all the DENY type filters. |
283 |
*/ |
284 |
void gen_deny_filters(char *cmd) |
285 |
{ |
286 |
int len; |
287 |
filter_t *cdf; |
288 |
|
289 |
if (dfilters) { |
290 |
for (cdf = dfilters; cdf->next; cdf = cdf->next) { |
291 |
len = strlen(cmd); |
292 |
snprintf(cmd + len, BIG_CMD - len, |
293 |
" OR %s%s \"%s\"", |
294 |
custom_header(cdf->custom), cdf->name, cdf->body); |
295 |
} |
296 |
|
297 |
len = strlen(cmd); |
298 |
snprintf(cmd + len, BIG_CMD - len, " %s%s%s \"%s\"", |
299 |
(dlimit ? "OR " : ""), |
300 |
custom_header(cdf->custom), cdf->name, cdf->body); |
301 |
} |
302 |
} |
303 |
|
304 |
|
305 |
/* |
306 |
* Adds to IMAP SEARCH command all the ALLOW type filters. |
307 |
*/ |
308 |
void gen_allow_filters(char *cmd, char *key) |
309 |
{ |
310 |
int len; |
311 |
filter_t *caf; |
312 |
|
313 |
if (afilters) { |
314 |
for (caf = afilters; caf->next; caf = caf->next) { |
315 |
len = strlen(cmd); |
316 |
snprintf(cmd + len, BIG_CMD - len, |
317 |
" %s %s%s \"%s\"", key, |
318 |
custom_header(caf->custom), caf->name, caf->body); |
319 |
} |
320 |
|
321 |
len = strlen(cmd); |
322 |
snprintf(cmd + len, BIG_CMD - len, " %s%s%s \"%s\"", |
323 |
(!strncmp(key, "NOT", 3) ? "NOT " : ""), |
324 |
custom_header(caf->custom), caf->name, caf->body); |
325 |
} |
326 |
} |
327 |
|
328 |
|
329 |
/* |
330 |
* Converts the string with the UID's of the messages to be deleted to |
331 |
* integers, sends the appropriate command and optionally prints some |
332 |
* headers of the "to be deleted" messages. |
333 |
*/ |
334 |
void del_messages(char *msgs) |
335 |
{ |
336 |
unsigned long int m; |
337 |
char hdr[HEADERS_MAX]; |
338 |
|
339 |
do { |
340 |
m = strtoul(msgs, &msgs, 0); |
341 |
|
342 |
if (options & OPT_SHOW_HEADERS) { |
343 |
imap_fetch(m, hdr); |
344 |
|
345 |
if (!(options & OPT_DETAILS_QUITE)) |
346 |
printf("Deleting message:\n%s", hdr); |
347 |
|
348 |
if (!(options & OPT_TEST_MODE)) |
349 |
log_info("%s", hdr); |
350 |
} |
351 |
|
352 |
if (!(options & OPT_TEST_MODE)) |
353 |
imap_store(m); |
354 |
|
355 |
} while (*msgs); |
356 |
} |