1 |
#include <stdio.h> |
2 |
#include <stdlib.h> |
3 |
#include <string.h> |
4 |
#include <strings.h> |
5 |
#include <ctype.h> |
6 |
#include <sys/types.h> |
7 |
#include <time.h> |
8 |
#include <regex.h> |
9 |
|
10 |
#include "config.h" |
11 |
#include "imapfilter.h" |
12 |
#include "account.h" |
13 |
#include "filter.h" |
14 |
#include "struct.h" |
15 |
|
16 |
|
17 |
extern account_t *accounts; |
18 |
extern mboxgrp_t *mboxgrps; |
19 |
|
20 |
filter_t *filters = NULL; /* First node of filters tree. */ |
21 |
|
22 |
filter_t *cur_fltr = NULL; /* Current filter. */ |
23 |
|
24 |
|
25 |
void init_filter(filter_t * node); |
26 |
|
27 |
void init_mask(mask_t * node); |
28 |
void convert_date(mask_t * node); |
29 |
|
30 |
void link_mbox_filter(filter_t * cf, mboxgrp_t * cg); |
31 |
|
32 |
void string_upper(char *str, size_t size); |
33 |
|
34 |
|
35 |
/* |
36 |
* Set new filter's variables to safe values. |
37 |
*/ |
38 |
void |
39 |
init_filter(filter_t * node) |
40 |
{ |
41 |
node->left = node->right = NULL; |
42 |
node->key[0] = '\0'; |
43 |
node->mode = FILTER_MODE_AND; |
44 |
node->action.type = node->action.msgflags = 0; |
45 |
node->action.raccount = NULL; |
46 |
node->action.destmbox[0] = node->action.args[0] = '\0'; |
47 |
node->masks = NULL; |
48 |
node->masknum = node->masklen = 0; |
49 |
} |
50 |
|
51 |
|
52 |
/* |
53 |
* A filter entry was declared, create it and set it's variables accordingly. |
54 |
*/ |
55 |
int |
56 |
set_filter(char *line, regmatch_t * m) |
57 |
{ |
58 |
filter_t *node; |
59 |
|
60 |
if (cur_fltr != NULL && cur_fltr->action.type == 0) |
61 |
return ERROR_CONFIG_PARSE; |
62 |
|
63 |
node = (filter_t *) xmalloc(sizeof(filter_t)); |
64 |
|
65 |
init_filter(node); |
66 |
|
67 |
strncat(node->key, line + m[1].rm_so, |
68 |
min(m[1].rm_eo - m[1].rm_so, KEY_LEN - 1)); |
69 |
|
70 |
if (m[2].rm_so != -1) { |
71 |
if (!strncasecmp(line + m[2].rm_so + 1, "or", 2)) |
72 |
node->mode = FILTER_MODE_OR; |
73 |
else |
74 |
node->mode = FILTER_MODE_AND; |
75 |
} |
76 |
#ifdef DEBUG |
77 |
fprintf(stderr, "debug: FILTER: '%s' %s\n", node->key, |
78 |
(node->mode == FILTER_MODE_OR ? "OR" : "AND")); |
79 |
#endif |
80 |
|
81 |
INSERT_TREE(filters, node, filter); |
82 |
|
83 |
cur_fltr = node; |
84 |
|
85 |
return 0; |
86 |
} |
87 |
|
88 |
|
89 |
/* |
90 |
* Assign an action to the last declared filter. |
91 |
*/ |
92 |
int |
93 |
set_action(char *line, regmatch_t * m) |
94 |
{ |
95 |
char *c, *cp, *t; |
96 |
account_t *a; |
97 |
|
98 |
if (cur_fltr == NULL) |
99 |
return ERROR_CONFIG_PARSE; |
100 |
|
101 |
if (!strncasecmp(line + m[1].rm_so, "delete", 6)) |
102 |
cur_fltr->action.type = FILTER_ACTION_DELETE; |
103 |
else if (!strncasecmp(line + m[1].rm_so, "copy", 4)) { |
104 |
cur_fltr->action.type = FILTER_ACTION_COPY; |
105 |
if (*(line + m[2].rm_so) == '"' && |
106 |
*(line + m[2].rm_eo - 1) == '"') |
107 |
strncat(cur_fltr->action.destmbox, |
108 |
line + m[2].rm_so + 1, |
109 |
min(m[2].rm_eo - m[2].rm_so - 2, |
110 |
MBOX_NAME_LEN - 1)); |
111 |
else |
112 |
strncat(cur_fltr->action.destmbox, line + m[2].rm_so, |
113 |
min(m[2].rm_eo - m[2].rm_so, MBOX_NAME_LEN - 1)); |
114 |
} else if (!strncasecmp(line + m[1].rm_so, "move", 4)) { |
115 |
cur_fltr->action.type = FILTER_ACTION_MOVE; |
116 |
if (*(line + m[3].rm_so) == '"' && |
117 |
*(line + m[3].rm_eo - 1) == '"') |
118 |
strncat(cur_fltr->action.destmbox, |
119 |
line + m[3].rm_so + 1, |
120 |
min(m[3].rm_eo - m[3].rm_so - 2, |
121 |
MBOX_NAME_LEN - 1)); |
122 |
else |
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strncat(cur_fltr->action.destmbox, line + m[3].rm_so, |
124 |
min(m[3].rm_eo - m[3].rm_so, MBOX_NAME_LEN - 1)); |
125 |
} else if (!strncasecmp(line + m[1].rm_so, "rcopy", 5)) { |
126 |
cur_fltr->action.type = FILTER_ACTION_RCOPY; |
127 |
for (a = accounts; a; a = a->next) |
128 |
if (!strncasecmp(line + m[4].rm_so, a->key, |
129 |
strlen(a->key))) |
130 |
cur_fltr->action.raccount = a; |
131 |
if (!cur_fltr->action.raccount) |
132 |
return ERROR_CONFIG_PARSE; |
133 |
|
134 |
if (*(line + m[5].rm_so) == '"' && |
135 |
*(line + m[5].rm_eo - 1) == '"') |
136 |
strncat(cur_fltr->action.destmbox, |
137 |
line + m[5].rm_so + 1, |
138 |
min(m[5].rm_eo - m[5].rm_so - 2, |
139 |
MBOX_NAME_LEN - 1)); |
140 |
else |
141 |
strncat(cur_fltr->action.destmbox, line + m[5].rm_so, |
142 |
min(m[5].rm_eo - m[5].rm_so, MBOX_NAME_LEN - 1)); |
143 |
} else if (!strncasecmp(line + m[1].rm_so, "rmove", 5)) { |
144 |
cur_fltr->action.type = FILTER_ACTION_RMOVE; |
145 |
for (a = accounts; a; a = a->next) |
146 |
if (!strncasecmp(line + m[6].rm_so, a->key, |
147 |
strlen(a->key))) |
148 |
cur_fltr->action.raccount = a; |
149 |
if (!cur_fltr->action.raccount) |
150 |
return ERROR_CONFIG_PARSE; |
151 |
|
152 |
if (*(line + m[7].rm_so) == '"' && |
153 |
*(line + m[7].rm_eo - 1) == '"') |
154 |
strncat(cur_fltr->action.destmbox, |
155 |
line + m[7].rm_so + 1, |
156 |
min(m[7].rm_eo - m[7].rm_so - 2, |
157 |
MBOX_NAME_LEN - 1)); |
158 |
else |
159 |
strncat(cur_fltr->action.destmbox, line + m[7].rm_so, |
160 |
min(m[7].rm_eo - m[7].rm_so, MBOX_NAME_LEN - 1)); |
161 |
} else if (!strncasecmp(line + m[1].rm_so, "flag", 4)) { |
162 |
if (!strncasecmp(line + m[8].rm_so, "replace", 7)) |
163 |
cur_fltr->action.type = FILTER_ACTION_FLAG_REPLACE; |
164 |
else if (!strncasecmp(line + m[8].rm_so, "add", 3)) |
165 |
cur_fltr->action.type = FILTER_ACTION_FLAG_ADD; |
166 |
else |
167 |
cur_fltr->action.type = FILTER_ACTION_FLAG_REMOVE; |
168 |
|
169 |
c = cp = (char *)malloc(m[9].rm_eo - m[9].rm_so + 1); |
170 |
xstrncpy(c, line + m[9].rm_so, m[9].rm_eo - m[9].rm_so); |
171 |
|
172 |
t = strtok_r(c, ",", &c); |
173 |
while (t) { |
174 |
if (!strcasecmp(t, "none")) { |
175 |
if (m[9].rm_eo - m[9].rm_so != strlen("none")) |
176 |
return ERROR_CONFIG_PARSE; |
177 |
} else if (!strcasecmp(t, "seen")) |
178 |
cur_fltr->action.msgflags |= MESSAGE_FLAG_SEEN; |
179 |
else if (!strcasecmp(t, "answered")) |
180 |
cur_fltr->action.msgflags |= |
181 |
MESSAGE_FLAG_ANSWERED; |
182 |
else if (!strcasecmp(t, "flagged")) |
183 |
cur_fltr->action.msgflags |= |
184 |
MESSAGE_FLAG_FLAGGED; |
185 |
else if (!strcasecmp(t, "deleted")) |
186 |
cur_fltr->action.msgflags |= |
187 |
MESSAGE_FLAG_DELETED; |
188 |
else if (!strcasecmp(t, "draft")) |
189 |
cur_fltr->action.msgflags |= MESSAGE_FLAG_DRAFT; |
190 |
else |
191 |
return ERROR_CONFIG_PARSE; |
192 |
|
193 |
t = strtok_r(NULL, ",", &c); |
194 |
} |
195 |
xfree(cp); |
196 |
} else if (!strncasecmp(line + m[1].rm_so, "list", 4)) { |
197 |
cur_fltr->action.type = FILTER_ACTION_LIST; |
198 |
} |
199 |
if (m[10].rm_so != -1) { |
200 |
strncat(cur_fltr->action.args, line + m[10].rm_so, |
201 |
min(m[10].rm_eo - m[10].rm_so, ARGS_LEN - 2)); |
202 |
while ((c = strchr(cur_fltr->action.args, ','))) |
203 |
*c = ' '; |
204 |
} |
205 |
#ifdef DEBUG |
206 |
fprintf(stderr, "debug: ACTION: %d '%s' '%s' %d '%s'\n", |
207 |
cur_fltr->action.type, |
208 |
(cur_fltr->action.raccount ? cur_fltr->action.raccount->key : ""), |
209 |
cur_fltr->action.destmbox, |
210 |
cur_fltr->action.msgflags, |
211 |
cur_fltr->action.args); |
212 |
#endif |
213 |
return 0; |
214 |
} |
215 |
|
216 |
|
217 |
/* |
218 |
* Set new mask's variables to safe values. |
219 |
*/ |
220 |
void |
221 |
init_mask(mask_t * node) |
222 |
{ |
223 |
node->next = NULL; |
224 |
node->body[0] = '\0'; |
225 |
node->type = 0; |
226 |
} |
227 |
|
228 |
|
229 |
/* |
230 |
* A new mask entry was declared, create it and set it's |
231 |
* variables accordingly. |
232 |
*/ |
233 |
int |
234 |
set_mask(char *line, regmatch_t * m, int mmt) |
235 |
{ |
236 |
int n; |
237 |
mask_t *node; |
238 |
char *bp; |
239 |
|
240 |
if (cur_fltr == NULL) |
241 |
return ERROR_CONFIG_PARSE; |
242 |
|
243 |
node = (mask_t *) xmalloc(sizeof(mask_t)); |
244 |
|
245 |
init_mask(node); |
246 |
|
247 |
bp = node->body; |
248 |
|
249 |
/* If specified set mask's type. */ |
250 |
if (m[2].rm_so != -1 && cur_fltr->masks) { |
251 |
if (!strncasecmp(line + m[2].rm_so, "or", 2)) { |
252 |
node->type = MASK_TYPE_OR; |
253 |
} else |
254 |
node->type = MASK_TYPE_AND; |
255 |
} |
256 |
/* Add NOT if specified. */ |
257 |
if (m[3].rm_so != -1) { |
258 |
n = min(m[3].rm_eo - m[3].rm_so, |
259 |
MASK_BODY_LEN - (bp - node->body) - 1); |
260 |
xstrncpy(bp, line + m[3].rm_so, n); |
261 |
string_upper(bp, n); |
262 |
*(bp + n - 1) = ' '; /* In case it's '\t'. */ |
263 |
*(bp + n) = '\0'; |
264 |
bp += n; |
265 |
} |
266 |
/* Keyword of the search key. */ |
267 |
n = min(m[4].rm_eo - m[4].rm_so, |
268 |
MASK_BODY_LEN - (bp - node->body) - 3); |
269 |
xstrncpy(bp, line + m[4].rm_so, n); |
270 |
string_upper(bp, n); |
271 |
*(bp + n) = '\0'; |
272 |
bp += n; |
273 |
|
274 |
if (mmt != MASK_MATCH_1) { |
275 |
*(bp++) = ' '; |
276 |
|
277 |
if (mmt != MASK_MATCH_4 && *(line + m[5].rm_so) != '"') |
278 |
*(bp++) = '"'; |
279 |
*bp = '\0'; |
280 |
|
281 |
n = min(m[5].rm_eo - m[5].rm_so, |
282 |
MASK_BODY_LEN - (bp - node->body) - 2); |
283 |
xstrncpy(bp, line + m[5].rm_so, n); |
284 |
*(bp + n) = '\0'; |
285 |
bp += n; |
286 |
|
287 |
if (mmt != MASK_MATCH_4 && *(line + m[5].rm_so) != '"') |
288 |
*(bp++) = '"'; |
289 |
*bp = '\0'; |
290 |
|
291 |
if (mmt == MASK_MATCH_3) { |
292 |
*(bp++) = ' '; |
293 |
|
294 |
if (*(line + m[6].rm_so) != '"') |
295 |
*(bp++) = '"'; |
296 |
*bp = '\0'; |
297 |
|
298 |
n = min(m[6].rm_eo - m[6].rm_so, |
299 |
MASK_BODY_LEN - (bp - node->body) - 2); |
300 |
xstrncpy(bp, line + m[6].rm_so, n); |
301 |
*(bp + n) = '\0'; |
302 |
bp += n; |
303 |
|
304 |
if (*(line + m[6].rm_so) != '"') |
305 |
*(bp++) = '"'; |
306 |
*bp = '\0'; |
307 |
} |
308 |
if (mmt == MASK_MATCH_4 && (strstr(node->body, "OLDER") || |
309 |
strstr(node->body, "NEWER"))) { |
310 |
convert_date(node); |
311 |
bp = node->body + strlen(node->body); |
312 |
} |
313 |
} |
314 |
APPEND_LINKED_LIST(cur_fltr->masks, node, mask); |
315 |
|
316 |
cur_fltr->masknum++; |
317 |
cur_fltr->masklen += (bp - node->body); |
318 |
|
319 |
#ifdef DEBUG |
320 |
fprintf(stderr, "debug: MASK: '%s'\n", node->body); |
321 |
#endif |
322 |
|
323 |
return 0; |
324 |
} |
325 |
|
326 |
|
327 |
/* |
328 |
* Converts masks related to date filtering, because IMAP servers do not |
329 |
* understand for example "OLDER 3", but "BEFORE 18-Oct-2001" (if |
330 |
* hypothetically current date was 21-Oct-2001). |
331 |
*/ |
332 |
void |
333 |
convert_date(mask_t * node) |
334 |
{ |
335 |
char *cp, *c; |
336 |
char s[16]; |
337 |
time_t te; |
338 |
struct tm *tl; |
339 |
|
340 |
cp = xstrdup(node->body); |
341 |
node->body[0] = '\0'; |
342 |
|
343 |
if (strstr(cp, "NOT")) |
344 |
strncat(node->body, "NOT ", 4); |
345 |
|
346 |
if ((c = strstr(cp, "OLDER"))) |
347 |
strncat(node->body, "BEFORE ", 7); |
348 |
else if ((c = strstr(cp, "NEWER"))) |
349 |
strncat(node->body, "SINCE ", 6); |
350 |
|
351 |
c += 6; |
352 |
|
353 |
te = time(NULL) - (time_t) (strtoul(c, NULL, 10) * 24 * 60 * 60); |
354 |
tl = localtime(&te); |
355 |
|
356 |
if (strftime(s, 15, "%d-%b-%Y", tl)) |
357 |
strncat(node->body, s, 15); |
358 |
|
359 |
xfree(cp); |
360 |
} |
361 |
|
362 |
|
363 |
/* |
364 |
* A new job was declared, link filters with mailbox-groups. |
365 |
*/ |
366 |
int |
367 |
set_job(char *line, regmatch_t * match) |
368 |
{ |
369 |
int n; |
370 |
char *ftok, *gtok, *fltr, *mbgrp, *f, *g; |
371 |
filter_t *cf; |
372 |
mboxgrp_t *cg; |
373 |
|
374 |
if (accounts == NULL || filters == NULL || cur_fltr->action.type == 0) |
375 |
return ERROR_CONFIG_PARSE; |
376 |
|
377 |
n = match[1].rm_eo - match[1].rm_so; |
378 |
fltr = (char *)xmalloc(n + 1); |
379 |
|
380 |
f = xstrncpy(fltr, line + match[1].rm_so, n); |
381 |
f[n] = '\0'; |
382 |
|
383 |
n = match[2].rm_eo - match[2].rm_so; |
384 |
mbgrp = (char *)xmalloc(n + 1); |
385 |
|
386 |
/* Go through filters. */ |
387 |
ftok = strtok_r(f, ",", &f); |
388 |
while (ftok != NULL) { |
389 |
FIND_TREE(filters, ftok, cf); |
390 |
if (cf == NULL) |
391 |
return ERROR_CONFIG_PARSE; |
392 |
|
393 |
g = xstrncpy(mbgrp, line + match[2].rm_so, n); |
394 |
g[n] = '\0'; |
395 |
|
396 |
/* Go through mailbox groups. */ |
397 |
gtok = strtok_r(g, ",", &g); |
398 |
while (gtok != NULL) { |
399 |
FIND_TREE(mboxgrps, gtok, cg); |
400 |
if (cg == NULL) |
401 |
return ERROR_CONFIG_PARSE; |
402 |
link_mbox_filter(cf, cg); |
403 |
|
404 |
gtok = strtok_r(NULL, ",", &g); |
405 |
} |
406 |
|
407 |
ftok = strtok_r(NULL, ",", &f); |
408 |
} |
409 |
|
410 |
xfree(fltr); |
411 |
xfree(mbgrp); |
412 |
|
413 |
return 0; |
414 |
} |
415 |
|
416 |
|
417 |
/* |
418 |
* Link a filter with a mailbox. |
419 |
*/ |
420 |
void |
421 |
link_mbox_filter(filter_t * cf, mboxgrp_t * cg) |
422 |
{ |
423 |
int i, j, f; |
424 |
|
425 |
for (i = 0; cg->mboxes[i] != NULL; i++) { |
426 |
for (f = j = 0; cg->mboxes[i]->filters[j] != NULL; j++) |
427 |
if (j == MBOX_FILTERS_MAX - 1 || |
428 |
!strcmp(cf->key, cg->mboxes[i]->filters[j]->key)) |
429 |
f = 1; |
430 |
|
431 |
if (f) |
432 |
continue; |
433 |
|
434 |
cg->mboxes[i]->filters[j] = cf; |
435 |
cg->mboxes[i]->filters[j + 1] = NULL; |
436 |
|
437 |
} |
438 |
|
439 |
#ifdef DEBUG |
440 |
fprintf(stderr, "debug: JOB: '%s' '%s'\n", cf->key, cg->key); |
441 |
#endif |
442 |
} |
443 |
|
444 |
|
445 |
/* |
446 |
* Convert a string of specified size to upper case. |
447 |
*/ |
448 |
void |
449 |
string_upper(char *str, size_t size) |
450 |
{ |
451 |
unsigned int i; |
452 |
|
453 |
for (i = 0; i < size; i++, str++) |
454 |
*str = toupper(*str); |
455 |
} |