1 |
#include <stdio.h> |
2 |
#include <errno.h> |
3 |
#include <sys/types.h> |
4 |
#include <regex.h> |
5 |
#include <string.h> |
6 |
#include <stdlib.h> |
7 |
#include <limits.h> |
8 |
#include <sys/stat.h> |
9 |
#include <ctype.h> |
10 |
|
11 |
#include "config.h" |
12 |
#include "imapfilter.h" |
13 |
#include "data.h" |
14 |
|
15 |
|
16 |
account_t *accounts = NULL; /* First node of accounts linked list. */ |
17 |
filter_t *filters = NULL; /* First node of filters tree. */ |
18 |
|
19 |
static mboxgrp_t *mboxgrps = NULL; /* First node of mailbox-groups tree. */ |
20 |
|
21 |
static account_t *cur_acct = NULL; /* Current account. */ |
22 |
static filter_t *cur_fltr = NULL; /* Current filter. */ |
23 |
|
24 |
|
25 |
/* |
26 |
* Allocate memory of the appropriate size for a new node. |
27 |
*/ |
28 |
void *create_node(size_t size) |
29 |
{ |
30 |
void *ptr; |
31 |
|
32 |
ptr = (void *) malloc(size); |
33 |
|
34 |
if (!ptr) |
35 |
fatal(ERROR_MEMORY_ALLOCATION, |
36 |
"imapfilter: allocating memory; %s\n", strerror(errno)); |
37 |
|
38 |
return ptr; |
39 |
} |
40 |
|
41 |
|
42 |
/* |
43 |
* Set new account's variables to safe values. |
44 |
*/ |
45 |
void init_account(account_t * node) |
46 |
{ |
47 |
node->next = NULL; |
48 |
node->server[0] = node->username[0] = node->password[0] = 0; |
49 |
node->port = 143; |
50 |
node->mboxes = NULL; |
51 |
} |
52 |
|
53 |
|
54 |
/* |
55 |
* Append account node to linked list. |
56 |
*/ |
57 |
void append_account(account_t * node) |
58 |
{ |
59 |
account_t *pos; |
60 |
account_t **app; |
61 |
|
62 |
APPEND_LINKED_LIST(accounts, node, pos, app); |
63 |
} |
64 |
|
65 |
|
66 |
/* |
67 |
* A new account entry was declared. Create it and set it's variables |
68 |
* accordingly. |
69 |
*/ |
70 |
int set_account(char *line, regmatch_t * match) |
71 |
{ |
72 |
int s; |
73 |
char p[6]; |
74 |
account_t *node; |
75 |
|
76 |
node = (account_t *) create_node(sizeof(account_t)); |
77 |
|
78 |
init_account(node); |
79 |
|
80 |
strncat(node->username, line + match[1].rm_so, |
81 |
min(match[1].rm_eo - match[1].rm_so, USERNAME_LEN - 1)); |
82 |
#ifdef DEBUG |
83 |
printf("debug: USERNAME: '%s'\n", node->username); |
84 |
#endif |
85 |
|
86 |
strncat(node->password, line + match[2].rm_so, |
87 |
min(match[2].rm_eo - match[2].rm_so, PASSWORD_LEN - 1)); |
88 |
#ifdef DEBUG |
89 |
printf("debug: PASSWORD: '%s'\n", node->password); |
90 |
#endif |
91 |
|
92 |
strncat(node->server, line + match[3].rm_so, |
93 |
min(match[3].rm_eo - match[3].rm_so, SERVER_LEN - 1)); |
94 |
#ifdef DEBUG |
95 |
printf("debug: SERVER: '%s'\n", node->server); |
96 |
#endif |
97 |
|
98 |
if (match[4].rm_so != -1) { |
99 |
s = min(match[4].rm_eo - match[4].rm_so - 1, 5); |
100 |
strncpy(p, line + match[4].rm_so + 1, s); |
101 |
p[s] = 0; |
102 |
node->port = strtoul(p, NULL, 0); |
103 |
#ifdef DEBUG |
104 |
printf("debug: PORT: %d\n", node->port); |
105 |
#endif |
106 |
} |
107 |
|
108 |
append_account(node); |
109 |
cur_acct = node; |
110 |
|
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return 0; |
112 |
} |
113 |
|
114 |
|
115 |
/* |
116 |
* Set new mailbox-group's variables to safe values. |
117 |
*/ |
118 |
void init_mboxgrp(mboxgrp_t * node) |
119 |
{ |
120 |
node->left = node->right = NULL; |
121 |
node->key[0] = 0; |
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node->mboxes[0] = NULL; |
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} |
124 |
|
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|
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/* |
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* Insert mailbox-group node in tree. |
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*/ |
129 |
void insert_mboxgrp(mboxgrp_t * node) |
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{ |
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int cmp; |
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mboxgrp_t *pos; |
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mboxgrp_t **ins; |
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|
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INSERT_TREE(mboxgrps, node, pos, ins, cmp); |
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} |
137 |
|
138 |
|
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/* |
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* A new mailbox-group entry was declared. Create it and set it's variables |
141 |
* accordingly. |
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*/ |
143 |
int set_mboxgrp(char *line, regmatch_t * match) |
144 |
{ |
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mboxgrp_t *node; |
146 |
char mboxs[LINE_MAX]; |
147 |
|
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mboxs[0] = 0; |
149 |
|
150 |
if (!accounts) |
151 |
return ERROR_CONFIG_PARSE; |
152 |
|
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node = (mboxgrp_t *) create_node(sizeof(mboxgrp_t)); |
154 |
|
155 |
init_mboxgrp(node); |
156 |
|
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strncat(node->key, line + match[1].rm_so, |
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min(match[1].rm_eo - match[1].rm_so, KEY_LEN - 1)); |
159 |
|
160 |
#ifdef DEBUG |
161 |
printf("debug: FOLDER: '%s'\n", node->key); |
162 |
#endif |
163 |
|
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strncat(mboxs, line + match[2].rm_so, |
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min(match[2].rm_eo - match[2].rm_so, LINE_MAX - 1)); |
166 |
|
167 |
process_mboxgrp(node, mboxs); |
168 |
|
169 |
insert_mboxgrp(node); |
170 |
|
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return 0; |
172 |
} |
173 |
|
174 |
|
175 |
/* |
176 |
* Calls set_mbox() in order to create mailboxes that are part of |
177 |
* the mailbox-group. |
178 |
*/ |
179 |
void process_mboxgrp(mboxgrp_t * node, char *mboxs) |
180 |
{ |
181 |
int i = 0; |
182 |
const char *delim = ","; |
183 |
char *tok; |
184 |
|
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while (i < MBOXGRP_MBOXES_MAX - 1 && (tok = strsep(&mboxs, delim))) { |
186 |
node->mboxes[i] = (mbox_t *) set_mbox(tok); |
187 |
node->mboxes[++i] = NULL; |
188 |
} |
189 |
} |
190 |
|
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|
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/* |
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* Find in the mailbox-group tree, the node with the specified key, |
194 |
* and return a pointer to it. |
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*/ |
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mboxgrp_t *find_mboxgrp(char *key) |
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{ |
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int cmp; |
199 |
mboxgrp_t *pos; |
200 |
|
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FIND_TREE(mboxgrps, key, pos, cmp); |
202 |
} |
203 |
|
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|
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/* |
206 |
* Set new mailbox's variables to safe values. |
207 |
*/ |
208 |
void init_mbox(mbox_t * node) |
209 |
{ |
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node->next = NULL; |
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node->name[0] = 0; |
212 |
node->filters[0] = NULL; |
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} |
214 |
|
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|
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/* |
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* Append mailbox node to linked list. |
218 |
*/ |
219 |
void append_mbox(mbox_t * node) |
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{ |
221 |
mbox_t *pos; |
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mbox_t **ins; |
223 |
|
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APPEND_LINKED_LIST(cur_acct->mboxes, node, pos, ins); |
225 |
} |
226 |
|
227 |
|
228 |
/* |
229 |
* A new mailbox was declared, create it and set it's variables accordingly. |
230 |
*/ |
231 |
mbox_t *set_mbox(char *name) |
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{ |
233 |
mbox_t *node; |
234 |
|
235 |
node = (mbox_t *) create_node(sizeof(mbox_t)); |
236 |
|
237 |
init_mbox(node); |
238 |
|
239 |
strncat(node->name, name, |
240 |
min(strlen(name), MBOX_NAME_LEN - 1)); |
241 |
|
242 |
#ifdef DEBUG |
243 |
printf("debug: MBOX: '%s'\n", node->name); |
244 |
#endif |
245 |
|
246 |
append_mbox(node); |
247 |
|
248 |
return node; |
249 |
} |
250 |
|
251 |
|
252 |
/* |
253 |
* Set new filter's variables to safe values. |
254 |
*/ |
255 |
void init_filter(filter_t * node) |
256 |
{ |
257 |
node->left = node->right = NULL; |
258 |
node->key[0] = 0; |
259 |
node->mode = FILTER_MODE_AND; |
260 |
node->action.type = 0; |
261 |
node->action.args[0] = 0; |
262 |
node->masks = NULL; |
263 |
node->masknum = node->masklen = 0; |
264 |
} |
265 |
|
266 |
|
267 |
/* |
268 |
* Insert filter node to tree. |
269 |
*/ |
270 |
void insert_filter(filter_t * node) |
271 |
{ |
272 |
int cmp; |
273 |
filter_t *pos; |
274 |
filter_t **ins; |
275 |
|
276 |
INSERT_TREE(filters, node, pos, ins, cmp); |
277 |
} |
278 |
|
279 |
|
280 |
/* |
281 |
* A filter entry was declared, create it and set it's variables accordingly. |
282 |
*/ |
283 |
int set_filter(char *line, regmatch_t * match) |
284 |
{ |
285 |
filter_t *node; |
286 |
|
287 |
if (cur_fltr && !cur_fltr->action.type) |
288 |
return ERROR_CONFIG_PARSE; |
289 |
|
290 |
node = (filter_t *) create_node(sizeof(filter_t)); |
291 |
|
292 |
init_filter(node); |
293 |
|
294 |
strncat(node->key, line + match[1].rm_so, |
295 |
min(match[1].rm_eo - match[1].rm_so, KEY_LEN - 1)); |
296 |
|
297 |
if (match[2].rm_so != -1) { |
298 |
if (*(line + match[2].rm_so + 1) == 'o' || *(line + match[2].rm_so + 1) == 'O') |
299 |
node->mode = FILTER_MODE_OR; |
300 |
else |
301 |
node->mode = FILTER_MODE_AND; |
302 |
} |
303 |
#ifdef DEBUG |
304 |
printf("debug: FILTER: '%s' %s\n", node->key, |
305 |
(node->mode == FILTER_MODE_OR ? "OR" : "AND")); |
306 |
#endif |
307 |
|
308 |
insert_filter(node); |
309 |
cur_fltr = node; |
310 |
|
311 |
return 0; |
312 |
} |
313 |
|
314 |
|
315 |
/* |
316 |
* Find in the filter tree, the node with the specified key and |
317 |
* return a pointer to it. |
318 |
*/ |
319 |
filter_t *find_filter(char *key) |
320 |
{ |
321 |
int cmp; |
322 |
filter_t *pos; |
323 |
|
324 |
FIND_TREE(filters, key, pos, cmp); |
325 |
} |
326 |
|
327 |
|
328 |
/* |
329 |
* Assign an action to the last declared filter. |
330 |
*/ |
331 |
int set_action(char *line, regmatch_t * match) |
332 |
{ |
333 |
if (!cur_fltr) |
334 |
return ERROR_CONFIG_PARSE; |
335 |
|
336 |
switch(*(line + match[1].rm_so)) { |
337 |
case 'd': case 'D': |
338 |
cur_fltr->action.type = FILTER_ACTION_DELETE; |
339 |
break; |
340 |
case 'c': case 'C': |
341 |
cur_fltr->action.type = FILTER_ACTION_COPY; |
342 |
strncat(cur_fltr->action.destmbox, line + match[2].rm_so, |
343 |
min(match[2].rm_eo - match[2].rm_so, MBOX_NAME_LEN - 1)); |
344 |
break; |
345 |
case 'm': case 'M': |
346 |
cur_fltr->action.type = FILTER_ACTION_MOVE; |
347 |
strncat(cur_fltr->action.destmbox, line + match[3].rm_so, |
348 |
min(match[3].rm_eo - match[3].rm_so, MBOX_NAME_LEN - 1)); |
349 |
break; |
350 |
case 'l': case 'L': |
351 |
cur_fltr->action.type = FILTER_ACTION_LIST; |
352 |
break; |
353 |
} |
354 |
|
355 |
if (match[4].rm_so != -1) |
356 |
strncat(cur_fltr->action.args, line + match[4].rm_so, |
357 |
min(match[4].rm_eo - match[4].rm_so, ARGS_LEN - 1)); |
358 |
|
359 |
return 0; |
360 |
|
361 |
} |
362 |
|
363 |
|
364 |
/* |
365 |
* Set new mask's variables to safe values. |
366 |
*/ |
367 |
void init_mask(mask_t * node) |
368 |
{ |
369 |
node->next = NULL; |
370 |
node->body[0] = 0; |
371 |
node->type = 0; |
372 |
} |
373 |
|
374 |
|
375 |
/* |
376 |
* Append mask node to linked list. |
377 |
*/ |
378 |
void append_mask(mask_t * node) |
379 |
{ |
380 |
mask_t *pos; |
381 |
mask_t **app; |
382 |
|
383 |
APPEND_LINKED_LIST(cur_fltr->masks, node, pos, app); |
384 |
} |
385 |
|
386 |
|
387 |
/* |
388 |
* A new mask entry was declared, create it and set it's |
389 |
* variables accordingly. |
390 |
*/ |
391 |
int set_mask(char *line, regmatch_t * match) |
392 |
{ |
393 |
int s, i, f = 0; |
394 |
mask_t *node; |
395 |
char *bp; |
396 |
|
397 |
if (!cur_fltr) |
398 |
return ERROR_CONFIG_PARSE; |
399 |
|
400 |
node = (mask_t *) create_node(sizeof(mask_t)); |
401 |
|
402 |
init_mask(node); |
403 |
|
404 |
bp = node->body; |
405 |
|
406 |
/* If specified set mask's type. */ |
407 |
if (match[2].rm_so != -1 && cur_fltr->masks) { |
408 |
if (*(line + match[2].rm_so) == 'o' || *(line + match[2].rm_so) == 'O') |
409 |
node->type = MASK_TYPE_OR; |
410 |
else |
411 |
node->type = MASK_TYPE_AND; |
412 |
} |
413 |
|
414 |
/* Add NOT if specified. */ |
415 |
if (match[3].rm_so != -1) { |
416 |
s = min(match[3].rm_eo - match[3].rm_so, |
417 |
MASK_BODY_LEN - (bp - node->body) - 1); |
418 |
strncpy(bp, line + match[3].rm_so, s); |
419 |
string_upper(bp, s); |
420 |
*(bp + s - 1) = ' '; /* In case it's '\t'. */ |
421 |
*(bp + s) = 0; |
422 |
bp += s; |
423 |
} |
424 |
|
425 |
/* Keyword of the search key. */ |
426 |
s = min(match[4].rm_eo - match[4].rm_so, |
427 |
MASK_BODY_LEN - (bp - node->body) - 3); |
428 |
strncpy(bp, line + match[4].rm_so, s); |
429 |
string_upper(bp, s); |
430 |
*(bp + s) = 0; |
431 |
bp += s; |
432 |
|
433 |
/* Body of the search key (string/number). */ |
434 |
for (i = 5; i <= 6; i++) |
435 |
if (match[i].rm_so != -1) { |
436 |
*(bp++) = ' '; |
437 |
|
438 |
/* Add '"' if not supplied and search key not a number. */ |
439 |
if (match[6].rm_so == -1 && |
440 |
(strstr(node->body, "LARGER") || |
441 |
strstr(node->body, "SMALLER"))) |
442 |
f = 1; |
443 |
else if (*(line + match[i].rm_so) != '"') |
444 |
*(bp++) = '"'; |
445 |
|
446 |
*bp = 0; |
447 |
|
448 |
s = min(match[i].rm_eo - match[i].rm_so, |
449 |
MASK_BODY_LEN - (bp - node->body) - 2); |
450 |
strncpy(bp, line + match[i].rm_so, s); |
451 |
*(bp + s) = 0; |
452 |
bp += s; |
453 |
|
454 |
if(*(line + match[i].rm_so) != '"' && !f) |
455 |
*(bp++) = '"'; |
456 |
*bp = 0; |
457 |
} |
458 |
|
459 |
append_mask(node); |
460 |
|
461 |
cur_fltr->masknum++; |
462 |
cur_fltr->masklen += (bp - node->body); |
463 |
|
464 |
|
465 |
#ifdef DEBUG |
466 |
printf("debug: MASK: '%s'\n", node->body); |
467 |
#endif |
468 |
|
469 |
return 0; |
470 |
} |
471 |
|
472 |
|
473 |
/* |
474 |
* A new job was declared, link filters with mailbox-groups. |
475 |
*/ |
476 |
int set_job(char *line, regmatch_t * match) |
477 |
{ |
478 |
int s; |
479 |
const char *delim = ","; |
480 |
char *ftok, *gtok, *fltr, *mbgrp, *f, *g; |
481 |
filter_t *cf; |
482 |
mboxgrp_t *cg; |
483 |
|
484 |
if (!accounts || !filters) |
485 |
return ERROR_CONFIG_PARSE; |
486 |
|
487 |
s = match[1].rm_eo - match[1].rm_so; |
488 |
fltr = (char *) malloc(s + 1); |
489 |
|
490 |
if (!fltr) |
491 |
fatal(ERROR_MEMORY_ALLOCATION, "imapfilter: allocating memory; %s", |
492 |
strerror(errno)); |
493 |
|
494 |
f = strncpy(fltr, line + match[1].rm_so, s); |
495 |
f[s] = 0; |
496 |
|
497 |
s = match[2].rm_eo - match[2].rm_so; |
498 |
mbgrp = (char *) malloc(s + 1); |
499 |
|
500 |
if (!mbgrp) |
501 |
fatal(ERROR_MEMORY_ALLOCATION, "imapfilter: allocating memory; %s", |
502 |
strerror(errno)); |
503 |
|
504 |
/* Go through filters. */ |
505 |
while ((ftok = strsep(&f, delim))) { |
506 |
cf = (filter_t *) find_filter(ftok); |
507 |
if (!cf) |
508 |
return ERROR_CONFIG_PARSE; |
509 |
|
510 |
g = strncpy(mbgrp, line + match[2].rm_so, s); |
511 |
g[s] = 0; |
512 |
|
513 |
/* Go through mailbox groups. */ |
514 |
while ((gtok = strsep(&g, delim))) { |
515 |
cg = (mboxgrp_t *) find_mboxgrp(gtok); |
516 |
if (!cg) |
517 |
return ERROR_CONFIG_PARSE; |
518 |
link_mbox_filter(cf, cg); |
519 |
} |
520 |
} |
521 |
|
522 |
free(fltr); |
523 |
free(mbgrp); |
524 |
|
525 |
return 0; |
526 |
} |
527 |
|
528 |
|
529 |
/* |
530 |
* Link a filter with a mailbox. |
531 |
*/ |
532 |
void link_mbox_filter(filter_t * cf, mboxgrp_t * cg) |
533 |
{ |
534 |
int i, j; |
535 |
int f; |
536 |
|
537 |
for(i = 0; cg->mboxes[i]; i++) { |
538 |
|
539 |
for (f = j = 0; cg->mboxes[i]->filters[j]; j++) |
540 |
if (j == MBOX_FILTERS_MAX - 1 || |
541 |
!strncmp(cf->key, cg->mboxes[i]->filters[j]->key, KEY_LEN)) |
542 |
f = 1; |
543 |
|
544 |
if (f) |
545 |
continue; |
546 |
|
547 |
cg->mboxes[i]->filters[j] = cf; |
548 |
cg->mboxes[i]->filters[j + 1] = NULL; |
549 |
|
550 |
} |
551 |
|
552 |
#ifdef DEBUG |
553 |
printf("debug: JOB: '%s' '%s'\n", cf->key, cg->key); |
554 |
#endif |
555 |
} |
556 |
|
557 |
|
558 |
/* |
559 |
* Free allocated memory of data structures that are not needed anymore. |
560 |
*/ |
561 |
void destroy_data(void) |
562 |
{ |
563 |
destroy_mboxgrp(mboxgrps); |
564 |
} |
565 |
|
566 |
|
567 |
/* |
568 |
* Go through the mailbox-group tree, and free the memory of each node. |
569 |
*/ |
570 |
void destroy_mboxgrp(mboxgrp_t * node) |
571 |
{ |
572 |
if (node->left) |
573 |
destroy_mboxgrp(node->left); |
574 |
else if (node->right) |
575 |
destroy_mboxgrp(node->right); |
576 |
|
577 |
#ifdef DEBUG |
578 |
printf("debug: deleting FOLDER: '%s'\n", node->key); |
579 |
#endif |
580 |
|
581 |
free(node); |
582 |
} |
583 |
|
584 |
|
585 |
/* |
586 |
* Convert a string of specified size to upper case. |
587 |
*/ |
588 |
void string_upper(char *str, size_t size) |
589 |
{ |
590 |
int i; |
591 |
|
592 |
for (i = 0; i < size; i++) |
593 |
*(str + i) = toupper(*(str + i)); |
594 |
} |