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eb4c0de6 | 1 | /* $Cambridge: exim/src/src/sieve.c,v 1.28 2007/04/19 13:19:06 ph10 Exp $ */ |
059ec3d9 PH |
2 | |
3 | /************************************************* | |
4 | * Exim - an Internet mail transport agent * | |
5 | *************************************************/ | |
6 | ||
50c99ba6 | 7 | /* Copyright (c) Michael Haardt 2003-2006 */ |
059ec3d9 PH |
8 | /* See the file NOTICE for conditions of use and distribution. */ |
9 | ||
10 | /* This code was contributed by Michael Haardt. */ | |
11 | ||
12 | ||
13 | /* Sieve mail filter. */ | |
14 | ||
15 | #include <ctype.h> | |
16 | #include <errno.h> | |
17 | #include <limits.h> | |
18 | #include <stdlib.h> | |
19 | #include <string.h> | |
20 | ||
21 | #include "exim.h" | |
22 | ||
23 | #if HAVE_ICONV | |
24 | #include <iconv.h> | |
25 | #endif | |
26 | ||
27 | /* Define this for RFC compliant \r\n end-of-line terminators. */ | |
28 | /* Undefine it for UNIX-style \n end-of-line terminators (default). */ | |
29 | #undef RFC_EOL | |
30 | ||
84024b72 PH |
31 | /* Define this for development of the Sieve extension "encoded-character". */ |
32 | #undef ENCODED_CHARACTER | |
33 | ||
024bd3c2 PH |
34 | /* Define this for development of the Sieve extension "envelope-auth". */ |
35 | #undef ENVELOPE_AUTH | |
36 | ||
7c5214ec PH |
37 | /* Define this for development of the Sieve extension "enotify". */ |
38 | #undef ENOTIFY | |
87fcc8b9 PH |
39 | |
40 | /* Define this for the Sieve extension "subaddress". */ | |
5ea81592 | 41 | #define SUBADDRESS |
059ec3d9 | 42 | |
87fcc8b9 | 43 | /* Define this for the Sieve extension "vacation". */ |
059ec3d9 PH |
44 | #define VACATION |
45 | ||
46 | /* Must be >= 1 */ | |
47 | #define VACATION_MIN_DAYS 1 | |
48 | /* Must be >= VACATION_MIN_DAYS, must be > 7, should be > 30 */ | |
49 | #define VACATION_MAX_DAYS 31 | |
50 | ||
51 | /* Keep this at 75 to accept only RFC compliant MIME words. */ | |
52 | /* Increase it if you want to match headers from buggy MUAs. */ | |
53 | #define MIMEWORD_LENGTH 75 | |
54 | ||
55 | struct Sieve | |
56 | { | |
57 | uschar *filter; | |
58 | const uschar *pc; | |
59 | int line; | |
60 | const uschar *errmsg; | |
61 | int keep; | |
62 | int require_envelope; | |
63 | int require_fileinto; | |
84024b72 PH |
64 | #ifdef ENCODED_CHARACTER |
65 | int require_encoded_character; | |
66 | #endif | |
024bd3c2 PH |
67 | #ifdef ENVELOPE_AUTH |
68 | int require_envelope_auth; | |
69 | #endif | |
7c5214ec PH |
70 | #ifdef ENOTIFY |
71 | int require_enotify; | |
50c99ba6 | 72 | struct Notification *notified; |
87fcc8b9 | 73 | #endif |
059ec3d9 PH |
74 | #ifdef SUBADDRESS |
75 | int require_subaddress; | |
76 | #endif | |
77 | #ifdef VACATION | |
78 | int require_vacation; | |
79 | int vacation_ran; | |
80 | #endif | |
81 | uschar *vacation_directory; | |
e4a89c47 PH |
82 | const uschar *subaddress; |
83 | const uschar *useraddress; | |
059ec3d9 PH |
84 | int require_copy; |
85 | int require_iascii_numeric; | |
86 | }; | |
87 | ||
5ea81592 | 88 | enum Comparator { COMP_OCTET, COMP_EN_ASCII_CASEMAP, COMP_ASCII_NUMERIC }; |
059ec3d9 PH |
89 | enum MatchType { MATCH_IS, MATCH_CONTAINS, MATCH_MATCHES }; |
90 | #ifdef SUBADDRESS | |
91 | enum AddressPart { ADDRPART_USER, ADDRPART_DETAIL, ADDRPART_LOCALPART, ADDRPART_DOMAIN, ADDRPART_ALL }; | |
92 | #else | |
93 | enum AddressPart { ADDRPART_LOCALPART, ADDRPART_DOMAIN, ADDRPART_ALL }; | |
94 | #endif | |
95 | enum RelOp { LT, LE, EQ, GE, GT, NE }; | |
96 | ||
97 | struct String | |
98 | { | |
99 | uschar *character; | |
100 | int length; | |
101 | }; | |
102 | ||
50c99ba6 PH |
103 | struct Notification |
104 | { | |
105 | struct String method; | |
7c5214ec | 106 | struct String importance; |
50c99ba6 PH |
107 | struct String message; |
108 | struct Notification *next; | |
109 | }; | |
110 | ||
7c5214ec | 111 | static int eq_asciicase(const struct String *needle, const struct String *haystack, int match_prefix); |
059ec3d9 PH |
112 | static int parse_test(struct Sieve *filter, int *cond, int exec); |
113 | static int parse_commands(struct Sieve *filter, int exec, address_item **generated); | |
114 | ||
115 | static uschar str_from_c[]="From"; | |
116 | static const struct String str_from={ str_from_c, 4 }; | |
117 | static uschar str_to_c[]="To"; | |
118 | static const struct String str_to={ str_to_c, 2 }; | |
119 | static uschar str_cc_c[]="Cc"; | |
120 | static const struct String str_cc={ str_cc_c, 2 }; | |
121 | static uschar str_bcc_c[]="Bcc"; | |
122 | static const struct String str_bcc={ str_bcc_c, 3 }; | |
024bd3c2 PH |
123 | static uschar str_auth_c[]="auth"; |
124 | static const struct String str_auth={ str_auth_c, 4 }; | |
059ec3d9 PH |
125 | static uschar str_sender_c[]="Sender"; |
126 | static const struct String str_sender={ str_sender_c, 6 }; | |
127 | static uschar str_resent_from_c[]="Resent-From"; | |
128 | static const struct String str_resent_from={ str_resent_from_c, 11 }; | |
129 | static uschar str_resent_to_c[]="Resent-To"; | |
130 | static const struct String str_resent_to={ str_resent_to_c, 9 }; | |
131 | static uschar str_fileinto_c[]="fileinto"; | |
132 | static const struct String str_fileinto={ str_fileinto_c, 8 }; | |
133 | static uschar str_envelope_c[]="envelope"; | |
134 | static const struct String str_envelope={ str_envelope_c, 8 }; | |
84024b72 PH |
135 | #ifdef ENCODED_CHARACTER |
136 | static uschar str_encoded_character_c[]="encoded-character"; | |
137 | static const struct String str_encoded_character={ str_encoded_character_c, 17 }; | |
138 | #endif | |
024bd3c2 PH |
139 | #ifdef ENVELOPE_AUTH |
140 | static uschar str_envelope_auth_c[]="envelope-auth"; | |
141 | static const struct String str_envelope_auth={ str_envelope_auth_c, 13 }; | |
142 | #endif | |
7c5214ec PH |
143 | #ifdef ENOTIFY |
144 | static uschar str_enotify_c[]="enotify"; | |
145 | static const struct String str_enotify={ str_enotify_c, 7 }; | |
87fcc8b9 | 146 | #endif |
059ec3d9 PH |
147 | #ifdef SUBADDRESS |
148 | static uschar str_subaddress_c[]="subaddress"; | |
149 | static const struct String str_subaddress={ str_subaddress_c, 10 }; | |
150 | #endif | |
151 | #ifdef VACATION | |
152 | static uschar str_vacation_c[]="vacation"; | |
153 | static const struct String str_vacation={ str_vacation_c, 8 }; | |
154 | static uschar str_subject_c[]="Subject"; | |
155 | static const struct String str_subject={ str_subject_c, 7 }; | |
156 | #endif | |
157 | static uschar str_copy_c[]="copy"; | |
158 | static const struct String str_copy={ str_copy_c, 4 }; | |
159 | static uschar str_iascii_casemap_c[]="i;ascii-casemap"; | |
160 | static const struct String str_iascii_casemap={ str_iascii_casemap_c, 15 }; | |
5ea81592 PH |
161 | static uschar str_enascii_casemap_c[]="en;ascii-casemap"; |
162 | static const struct String str_enascii_casemap={ str_enascii_casemap_c, 16 }; | |
059ec3d9 PH |
163 | static uschar str_ioctet_c[]="i;octet"; |
164 | static const struct String str_ioctet={ str_ioctet_c, 7 }; | |
165 | static uschar str_iascii_numeric_c[]="i;ascii-numeric"; | |
166 | static const struct String str_iascii_numeric={ str_iascii_numeric_c, 15 }; | |
167 | static uschar str_comparator_iascii_casemap_c[]="comparator-i;ascii-casemap"; | |
168 | static const struct String str_comparator_iascii_casemap={ str_comparator_iascii_casemap_c, 26 }; | |
5ea81592 PH |
169 | static uschar str_comparator_enascii_casemap_c[]="comparator-en;ascii-casemap"; |
170 | static const struct String str_comparator_enascii_casemap={ str_comparator_enascii_casemap_c, 27 }; | |
059ec3d9 PH |
171 | static uschar str_comparator_ioctet_c[]="comparator-i;octet"; |
172 | static const struct String str_comparator_ioctet={ str_comparator_ioctet_c, 18 }; | |
173 | static uschar str_comparator_iascii_numeric_c[]="comparator-i;ascii-numeric"; | |
174 | static const struct String str_comparator_iascii_numeric={ str_comparator_iascii_numeric_c, 26 }; | |
175 | ||
176 | ||
177 | /************************************************* | |
178 | * Encode to quoted-printable * | |
179 | *************************************************/ | |
180 | ||
181 | /* | |
182 | Arguments: | |
183 | src UTF-8 string | |
50c99ba6 PH |
184 | dst US-ASCII string |
185 | ||
186 | Returns | |
187 | dst | |
059ec3d9 PH |
188 | */ |
189 | ||
190 | static struct String *quoted_printable_encode(const struct String *src, struct String *dst) | |
191 | { | |
192 | int pass; | |
193 | const uschar *start,*end; | |
194 | uschar *new = NULL; | |
195 | uschar ch; | |
196 | size_t line; | |
197 | ||
198 | for (pass=0; pass<=1; ++pass) | |
199 | { | |
200 | line=0; | |
201 | if (pass==0) | |
202 | dst->length=0; | |
203 | else | |
204 | { | |
205 | dst->character=store_get(dst->length+1); /* plus one for \0 */ | |
206 | new=dst->character; | |
207 | } | |
208 | for (start=src->character,end=start+src->length; start<end; ++start) | |
209 | { | |
210 | ch=*start; | |
211 | if (line>=73) | |
212 | { | |
213 | if (pass==0) | |
214 | dst->length+=2; | |
215 | else | |
216 | { | |
217 | *new++='='; | |
218 | *new++='\n'; | |
219 | } | |
220 | line=0; | |
221 | } | |
222 | if | |
223 | ( | |
224 | (ch>=33 && ch<=60) | |
225 | || (ch>=62 && ch<=126) | |
226 | || | |
227 | ( | |
228 | (ch==9 || ch==32) | |
059ec3d9 PH |
229 | && start+2<end |
230 | && (*(start+1)!='\r' || *(start+2)!='\n') | |
059ec3d9 PH |
231 | ) |
232 | ) | |
233 | { | |
234 | if (pass==0) | |
235 | ++dst->length; | |
236 | else | |
237 | *new++=*start; | |
238 | ++line; | |
239 | } | |
059ec3d9 PH |
240 | else if (ch=='\r' && start+1<end && *(start+1)=='\n') |
241 | { | |
242 | if (pass==0) | |
243 | { | |
244 | ++dst->length; | |
245 | line=0; | |
059ec3d9 PH |
246 | } |
247 | else | |
248 | *new++='\n'; | |
249 | line=0; | |
50c99ba6 | 250 | ++start; |
059ec3d9 | 251 | } |
059ec3d9 PH |
252 | else |
253 | { | |
254 | if (pass==0) | |
255 | dst->length+=3; | |
256 | else | |
257 | { | |
258 | sprintf(CS new,"=%02X",ch); | |
259 | new+=3; | |
260 | } | |
261 | line+=3; | |
262 | } | |
263 | } | |
264 | } | |
265 | *new='\0'; /* not included in length, but nice */ | |
266 | return dst; | |
267 | } | |
268 | ||
269 | ||
7c5214ec PH |
270 | /************************************************* |
271 | * Check mail address for correct syntax * | |
272 | *************************************************/ | |
273 | ||
274 | /* | |
275 | Check mail address for being syntactically correct. | |
276 | ||
277 | Arguments: | |
278 | filter points to the Sieve filter including its state | |
279 | address String containing one address | |
280 | ||
281 | Returns | |
282 | 1 Mail address is syntactically OK | |
283 | -1 syntax error | |
284 | */ | |
285 | ||
286 | int check_mail_address(struct Sieve *filter, const struct String *address) | |
287 | { | |
288 | int start, end, domain; | |
289 | uschar *error,*ss; | |
290 | ||
291 | if (address->length>0) | |
292 | { | |
293 | ss = parse_extract_address(address->character, &error, &start, &end, &domain, | |
294 | FALSE); | |
295 | if (ss == NULL) | |
296 | { | |
297 | filter->errmsg=string_sprintf("malformed address \"%s\" (%s)", | |
298 | address->character, error); | |
299 | return -1; | |
300 | } | |
301 | else | |
302 | return 1; | |
303 | } | |
304 | else | |
305 | { | |
306 | filter->errmsg=CUS "empty address"; | |
307 | return -1; | |
308 | } | |
309 | } | |
310 | ||
311 | ||
50c99ba6 PH |
312 | /************************************************* |
313 | * Decode URI encoded string * | |
314 | *************************************************/ | |
315 | ||
316 | /* | |
317 | Arguments: | |
318 | str URI encoded string | |
319 | ||
320 | Returns | |
321 | 0 Decoding successful | |
322 | -1 Encoding error | |
323 | */ | |
324 | ||
7c5214ec | 325 | #ifdef ENOTIFY |
50c99ba6 PH |
326 | static int uri_decode(struct String *str) |
327 | { | |
328 | uschar *s,*t,*e; | |
329 | ||
330 | if (str->length==0) return 0; | |
331 | for (s=str->character,t=s,e=s+str->length; s<e; ) | |
332 | { | |
333 | if (*s=='%') | |
334 | { | |
335 | if (s+2<e && isxdigit(*(s+1)) && isxdigit(*(s+2))) | |
336 | { | |
337 | *t++=((isdigit(*(s+1)) ? *(s+1)-'0' : tolower(*(s+1))-'a'+10)<<4) | |
338 | | (isdigit(*(s+2)) ? *(s+2)-'0' : tolower(*(s+2))-'a'+10); | |
339 | s+=3; | |
340 | } | |
341 | else return -1; | |
342 | } | |
343 | else | |
344 | *t++=*s++; | |
345 | } | |
346 | *t='\0'; | |
347 | str->length=t-str->character; | |
348 | return 0; | |
349 | } | |
350 | ||
351 | ||
352 | /************************************************* | |
353 | * Parse mailto URI * | |
354 | *************************************************/ | |
355 | ||
356 | /* | |
357 | Parse mailto-URI. | |
358 | ||
359 | mailtoURI = "mailto:" [ to ] [ headers ] | |
360 | to = [ addr-spec *("%2C" addr-spec ) ] | |
361 | headers = "?" header *( "&" header ) | |
362 | header = hname "=" hvalue | |
363 | hname = *urlc | |
364 | hvalue = *urlc | |
365 | ||
366 | Arguments: | |
367 | filter points to the Sieve filter including its state | |
368 | uri URI, excluding scheme | |
7c5214ec PH |
369 | recipient |
370 | body | |
50c99ba6 PH |
371 | |
372 | Returns | |
373 | 1 URI is syntactically OK | |
7c5214ec | 374 | 0 Unknown URI scheme |
50c99ba6 PH |
375 | -1 syntax error |
376 | */ | |
377 | ||
7c5214ec | 378 | static int parse_mailto_uri(struct Sieve *filter, const uschar *uri, string_item **recipient, struct String *header, struct String *body) |
50c99ba6 PH |
379 | { |
380 | const uschar *start; | |
381 | struct String to,hname,hvalue; | |
382 | int capacity; | |
383 | string_item *new; | |
384 | ||
7c5214ec PH |
385 | if (Ustrncmp(uri,"mailto:",7)) |
386 | { | |
387 | filter->errmsg=US "Unknown URI scheme"; | |
388 | return 0; | |
389 | } | |
390 | uri+=7; | |
50c99ba6 PH |
391 | if (*uri && *uri!='?') |
392 | for (;;) | |
393 | { | |
394 | /* match to */ | |
395 | for (start=uri; *uri && *uri!='?' && (*uri!='%' || *(uri+1)!='2' || tolower(*(uri+2))!='c'); ++uri); | |
396 | if (uri>start) | |
397 | { | |
398 | capacity=0; | |
399 | to.character=(uschar*)0; | |
400 | to.length=0; | |
401 | to.character=string_cat(to.character,&capacity,&to.length,start,uri-start); | |
402 | to.character[to.length]='\0'; | |
403 | if (uri_decode(&to)==-1) | |
404 | { | |
405 | filter->errmsg=US"Invalid URI encoding"; | |
406 | return -1; | |
407 | } | |
408 | new=store_get(sizeof(string_item)); | |
409 | new->text=store_get(to.length+1); | |
410 | if (to.length) memcpy(new->text,to.character,to.length); | |
411 | new->text[to.length]='\0'; | |
412 | new->next=*recipient; | |
413 | *recipient=new; | |
414 | } | |
415 | else | |
416 | { | |
417 | filter->errmsg=US"Missing addr-spec in URI"; | |
418 | return -1; | |
419 | } | |
420 | if (*uri=='%') uri+=3; | |
421 | else break; | |
422 | } | |
423 | if (*uri=='?') | |
424 | { | |
425 | ++uri; | |
426 | for (;;) | |
427 | { | |
428 | /* match hname */ | |
429 | for (start=uri; *uri && (isalnum(*uri) || strchr("$-_.+!*'(),%",*uri)); ++uri); | |
430 | if (uri>start) | |
431 | { | |
432 | capacity=0; | |
433 | hname.character=(uschar*)0; | |
434 | hname.length=0; | |
435 | hname.character=string_cat(hname.character,&capacity,&hname.length,start,uri-start); | |
436 | hname.character[hname.length]='\0'; | |
437 | if (uri_decode(&hname)==-1) | |
438 | { | |
439 | filter->errmsg=US"Invalid URI encoding"; | |
440 | return -1; | |
441 | } | |
442 | } | |
443 | /* match = */ | |
444 | if (*uri=='=') | |
445 | ++uri; | |
446 | else | |
447 | { | |
448 | filter->errmsg=US"Missing equal after hname"; | |
449 | return -1; | |
450 | } | |
451 | /* match hvalue */ | |
452 | for (start=uri; *uri && (isalnum(*uri) || strchr("$-_.+!*'(),%",*uri)); ++uri); | |
453 | if (uri>start) | |
454 | { | |
455 | capacity=0; | |
456 | hvalue.character=(uschar*)0; | |
457 | hvalue.length=0; | |
458 | hvalue.character=string_cat(hvalue.character,&capacity,&hvalue.length,start,uri-start); | |
459 | hvalue.character[hvalue.length]='\0'; | |
460 | if (uri_decode(&hvalue)==-1) | |
461 | { | |
462 | filter->errmsg=US"Invalid URI encoding"; | |
463 | return -1; | |
464 | } | |
465 | } | |
7c5214ec | 466 | if (hname.length==2 && strcmpic(hname.character, US"to")==0) |
50c99ba6 PH |
467 | { |
468 | new=store_get(sizeof(string_item)); | |
469 | new->text=store_get(hvalue.length+1); | |
470 | if (hvalue.length) memcpy(new->text,hvalue.character,hvalue.length); | |
471 | new->text[hvalue.length]='\0'; | |
472 | new->next=*recipient; | |
473 | *recipient=new; | |
474 | } | |
7c5214ec | 475 | else if (hname.length==4 && strcmpic(hname.character, US"body")==0) |
50c99ba6 | 476 | *body=hvalue; |
7c5214ec PH |
477 | else |
478 | { | |
479 | static struct String ignore[]= | |
480 | { | |
481 | {US"from",4}, | |
482 | {US"subject",7}, | |
483 | {US"received",8} | |
484 | }; | |
485 | static struct String *end=ignore+sizeof(ignore)/sizeof(ignore[0]); | |
486 | struct String *i; | |
487 | ||
488 | for (i=ignore; i<end && !eq_asciicase(&hname,i,0); ++i); | |
489 | if (i==end) | |
490 | { | |
491 | if (header->length==-1) header->length=0; | |
492 | capacity=header->length; | |
493 | header->character=string_cat(header->character,&capacity,&header->length,hname.character,hname.length); | |
494 | header->character=string_cat(header->character,&capacity,&header->length,CUS ": ",2); | |
495 | header->character=string_cat(header->character,&capacity,&header->length,hvalue.character,hvalue.length); | |
496 | header->character=string_cat(header->character,&capacity,&header->length,CUS "\n",1); | |
497 | header->character[header->length]='\0'; | |
498 | } | |
499 | } | |
50c99ba6 PH |
500 | if (*uri=='&') ++uri; |
501 | else break; | |
502 | } | |
503 | } | |
504 | if (*uri) | |
505 | { | |
506 | filter->errmsg=US"Syntactically invalid URI"; | |
507 | return -1; | |
508 | } | |
509 | return 1; | |
510 | } | |
7c5214ec PH |
511 | #endif |
512 | ||
50c99ba6 | 513 | |
059ec3d9 PH |
514 | /************************************************* |
515 | * Octet-wise string comparison * | |
516 | *************************************************/ | |
517 | ||
518 | /* | |
519 | Arguments: | |
520 | needle UTF-8 string to search ... | |
521 | haystack ... inside the haystack | |
522 | match_prefix 1 to compare if needle is a prefix of haystack | |
523 | ||
524 | Returns: 0 needle not found in haystack | |
525 | 1 needle found | |
526 | */ | |
527 | ||
528 | static int eq_octet(const struct String *needle, | |
529 | const struct String *haystack, int match_prefix) | |
530 | { | |
531 | size_t nl,hl; | |
532 | const uschar *n,*h; | |
533 | ||
534 | nl=needle->length; | |
535 | n=needle->character; | |
536 | hl=haystack->length; | |
537 | h=haystack->character; | |
538 | while (nl>0 && hl>0) | |
539 | { | |
540 | #if !HAVE_ICONV | |
541 | if (*n&0x80) return 0; | |
542 | if (*h&0x80) return 0; | |
543 | #endif | |
544 | if (*n!=*h) return 0; | |
545 | ++n; | |
546 | ++h; | |
547 | --nl; | |
548 | --hl; | |
549 | } | |
550 | return (match_prefix ? nl==0 : nl==0 && hl==0); | |
551 | } | |
552 | ||
553 | ||
554 | /************************************************* | |
555 | * ASCII case-insensitive string comparison * | |
556 | *************************************************/ | |
557 | ||
558 | /* | |
559 | Arguments: | |
560 | needle UTF-8 string to search ... | |
561 | haystack ... inside the haystack | |
562 | match_prefix 1 to compare if needle is a prefix of haystack | |
563 | ||
564 | Returns: 0 needle not found in haystack | |
565 | 1 needle found | |
566 | */ | |
567 | ||
568 | static int eq_asciicase(const struct String *needle, | |
569 | const struct String *haystack, int match_prefix) | |
570 | { | |
571 | size_t nl,hl; | |
572 | const uschar *n,*h; | |
573 | uschar nc,hc; | |
574 | ||
575 | nl=needle->length; | |
576 | n=needle->character; | |
577 | hl=haystack->length; | |
578 | h=haystack->character; | |
579 | while (nl>0 && hl>0) | |
580 | { | |
581 | nc=*n; | |
582 | hc=*h; | |
583 | #if !HAVE_ICONV | |
584 | if (nc&0x80) return 0; | |
585 | if (hc&0x80) return 0; | |
586 | #endif | |
587 | /* tolower depends on the locale and only ASCII case must be insensitive */ | |
1c59d63b | 588 | if ((nc>='A' && nc<='Z' ? nc|0x20 : nc) != (hc>='A' && hc<='Z' ? hc|0x20 : hc)) return 0; |
059ec3d9 PH |
589 | ++n; |
590 | ++h; | |
591 | --nl; | |
592 | --hl; | |
593 | } | |
594 | return (match_prefix ? nl==0 : nl==0 && hl==0); | |
595 | } | |
596 | ||
597 | ||
598 | /************************************************* | |
1c59d63b | 599 | * Glob pattern search * |
059ec3d9 PH |
600 | *************************************************/ |
601 | ||
602 | /* | |
603 | Arguments: | |
604 | needle pattern to search ... | |
605 | haystack ... inside the haystack | |
606 | ||
607 | Returns: 0 needle not found in haystack | |
608 | 1 needle found | |
1c59d63b | 609 | -1 pattern error |
059ec3d9 PH |
610 | */ |
611 | ||
1c59d63b | 612 | static int eq_glob(const struct String *needle, |
50c99ba6 | 613 | const struct String *haystack, int ascii_caseless, int match_octet) |
059ec3d9 | 614 | { |
1c59d63b PH |
615 | const uschar *n,*h,*nend,*hend; |
616 | int may_advance=0; | |
059ec3d9 | 617 | |
1c59d63b PH |
618 | n=needle->character; |
619 | h=haystack->character; | |
620 | nend=n+needle->length; | |
621 | hend=h+haystack->length; | |
622 | while (n<nend) | |
059ec3d9 | 623 | { |
1c59d63b PH |
624 | if (*n=='*') |
625 | { | |
626 | ++n; | |
627 | may_advance=1; | |
059ec3d9 | 628 | } |
1c59d63b PH |
629 | else |
630 | { | |
631 | const uschar *npart,*hpart; | |
059ec3d9 | 632 | |
1c59d63b PH |
633 | /* Try to match a non-star part of the needle at the current */ |
634 | /* position in the haystack. */ | |
635 | match_part: | |
636 | npart=n; | |
637 | hpart=h; | |
638 | while (npart<nend && *npart!='*') switch (*npart) | |
639 | { | |
640 | case '?': | |
059ec3d9 | 641 | { |
1c59d63b | 642 | if (hpart==hend) return 0; |
50c99ba6 | 643 | if (match_octet) |
1c59d63b | 644 | ++hpart; |
1c59d63b | 645 | else |
50c99ba6 PH |
646 | { |
647 | /* Match one UTF8 encoded character */ | |
648 | if ((*hpart&0xc0)==0xc0) | |
649 | { | |
650 | ++hpart; | |
651 | while (hpart<hend && ((*hpart&0xc0)==0x80)) ++hpart; | |
652 | } | |
653 | else | |
654 | ++hpart; | |
655 | } | |
1c59d63b PH |
656 | ++npart; |
657 | break; | |
059ec3d9 | 658 | } |
1c59d63b | 659 | case '\\': |
059ec3d9 | 660 | { |
1c59d63b PH |
661 | ++npart; |
662 | if (npart==nend) return -1; | |
663 | /* FALLTHROUGH */ | |
059ec3d9 | 664 | } |
1c59d63b | 665 | default: |
059ec3d9 | 666 | { |
1c59d63b PH |
667 | if (hpart==hend) return 0; |
668 | /* tolower depends on the locale, but we need ASCII */ | |
669 | if | |
670 | ( | |
671 | #if !HAVE_ICONV | |
672 | (*hpart&0x80) || (*npart&0x80) || | |
673 | #endif | |
674 | ascii_caseless | |
675 | ? ((*npart>='A' && *npart<='Z' ? *npart|0x20 : *npart) != (*hpart>='A' && *hpart<='Z' ? *hpart|0x20 : *hpart)) | |
676 | : *hpart!=*npart | |
677 | ) | |
059ec3d9 | 678 | { |
1c59d63b PH |
679 | if (may_advance) |
680 | /* string match after a star failed, advance and try again */ | |
059ec3d9 | 681 | { |
1c59d63b PH |
682 | ++h; |
683 | goto match_part; | |
059ec3d9 | 684 | } |
1c59d63b | 685 | else return 0; |
059ec3d9 PH |
686 | } |
687 | else | |
688 | { | |
1c59d63b PH |
689 | ++npart; |
690 | ++hpart; | |
691 | }; | |
059ec3d9 | 692 | } |
059ec3d9 | 693 | } |
1c59d63b PH |
694 | /* at this point, a part was matched successfully */ |
695 | if (may_advance && npart==nend && hpart<hend) | |
696 | /* needle ends, but haystack does not: if there was a star before, advance and try again */ | |
059ec3d9 | 697 | { |
1c59d63b PH |
698 | ++h; |
699 | goto match_part; | |
059ec3d9 | 700 | } |
1c59d63b PH |
701 | h=hpart; |
702 | n=npart; | |
703 | may_advance=0; | |
059ec3d9 PH |
704 | } |
705 | } | |
1c59d63b | 706 | return (h==hend ? 1 : may_advance); |
059ec3d9 PH |
707 | } |
708 | ||
709 | ||
710 | /************************************************* | |
711 | * ASCII numeric comparison * | |
712 | *************************************************/ | |
713 | ||
714 | /* | |
715 | Arguments: | |
716 | a first numeric string | |
717 | b second numeric string | |
718 | relop relational operator | |
719 | ||
720 | Returns: 0 not (a relop b) | |
721 | 1 a relop b | |
722 | */ | |
723 | ||
724 | static int eq_asciinumeric(const struct String *a, | |
725 | const struct String *b, enum RelOp relop) | |
726 | { | |
727 | size_t al,bl; | |
728 | const uschar *as,*aend,*bs,*bend; | |
729 | int cmp; | |
730 | ||
731 | as=a->character; | |
732 | aend=a->character+a->length; | |
733 | bs=b->character; | |
734 | bend=b->character+b->length; | |
735 | ||
736 | while (*as>='0' && *as<='9' && as<aend) ++as; | |
737 | al=as-a->character; | |
738 | while (*bs>='0' && *bs<='9' && bs<bend) ++bs; | |
739 | bl=bs-b->character; | |
740 | ||
741 | if (al && bl==0) cmp=-1; | |
742 | else if (al==0 && bl==0) cmp=0; | |
743 | else if (al==0 && bl) cmp=1; | |
744 | else | |
745 | { | |
746 | cmp=al-bl; | |
747 | if (cmp==0) cmp=memcmp(a->character,b->character,al); | |
748 | } | |
749 | switch (relop) | |
750 | { | |
751 | case LT: return cmp<0; | |
752 | case LE: return cmp<=0; | |
753 | case EQ: return cmp==0; | |
754 | case GE: return cmp>=0; | |
755 | case GT: return cmp>0; | |
756 | case NE: return cmp!=0; | |
757 | } | |
758 | /*NOTREACHED*/ | |
759 | return -1; | |
760 | } | |
761 | ||
762 | ||
763 | /************************************************* | |
764 | * Compare strings * | |
765 | *************************************************/ | |
766 | ||
767 | /* | |
768 | Arguments: | |
50c99ba6 | 769 | filter points to the Sieve filter including its state |
059ec3d9 PH |
770 | needle UTF-8 pattern or string to search ... |
771 | haystack ... inside the haystack | |
772 | co comparator to use | |
773 | mt match type to use | |
774 | ||
775 | Returns: 0 needle not found in haystack | |
776 | 1 needle found | |
777 | -1 comparator does not offer matchtype | |
778 | */ | |
779 | ||
780 | static int compare(struct Sieve *filter, const struct String *needle, const struct String *haystack, | |
781 | enum Comparator co, enum MatchType mt) | |
782 | { | |
783 | int r=0; | |
784 | ||
f05da2e8 | 785 | if ((filter_test != FTEST_NONE && debug_selector != 0) || |
059ec3d9 PH |
786 | (debug_selector & D_filter) != 0) |
787 | { | |
788 | debug_printf("String comparison (match "); | |
789 | switch (mt) | |
790 | { | |
791 | case MATCH_IS: debug_printf(":is"); break; | |
792 | case MATCH_CONTAINS: debug_printf(":contains"); break; | |
793 | case MATCH_MATCHES: debug_printf(":matches"); break; | |
794 | } | |
795 | debug_printf(", comparison \""); | |
796 | switch (co) | |
797 | { | |
798 | case COMP_OCTET: debug_printf("i;octet"); break; | |
5ea81592 | 799 | case COMP_EN_ASCII_CASEMAP: debug_printf("en;ascii-casemap"); break; |
059ec3d9 PH |
800 | case COMP_ASCII_NUMERIC: debug_printf("i;ascii-numeric"); break; |
801 | } | |
802 | debug_printf("\"):\n"); | |
803 | debug_printf(" Search = %s (%d chars)\n", needle->character,needle->length); | |
804 | debug_printf(" Inside = %s (%d chars)\n", haystack->character,haystack->length); | |
805 | } | |
806 | switch (mt) | |
807 | { | |
808 | case MATCH_IS: | |
809 | { | |
810 | switch (co) | |
811 | { | |
812 | case COMP_OCTET: | |
813 | { | |
814 | if (eq_octet(needle,haystack,0)) r=1; | |
815 | break; | |
816 | } | |
5ea81592 | 817 | case COMP_EN_ASCII_CASEMAP: |
059ec3d9 PH |
818 | { |
819 | if (eq_asciicase(needle,haystack,0)) r=1; | |
820 | break; | |
821 | } | |
822 | case COMP_ASCII_NUMERIC: | |
823 | { | |
824 | if (!filter->require_iascii_numeric) | |
825 | { | |
826 | filter->errmsg=CUS "missing previous require \"comparator-i;ascii-numeric\";"; | |
827 | return -1; | |
828 | } | |
829 | if (eq_asciinumeric(needle,haystack,EQ)) r=1; | |
830 | break; | |
831 | } | |
832 | } | |
833 | break; | |
834 | } | |
835 | case MATCH_CONTAINS: | |
836 | { | |
837 | struct String h; | |
838 | ||
839 | switch (co) | |
840 | { | |
841 | case COMP_OCTET: | |
842 | { | |
843 | for (h=*haystack; h.length; ++h.character,--h.length) if (eq_octet(needle,&h,1)) { r=1; break; } | |
844 | break; | |
845 | } | |
5ea81592 | 846 | case COMP_EN_ASCII_CASEMAP: |
059ec3d9 PH |
847 | { |
848 | for (h=*haystack; h.length; ++h.character,--h.length) if (eq_asciicase(needle,&h,1)) { r=1; break; } | |
849 | break; | |
850 | } | |
851 | default: | |
852 | { | |
853 | filter->errmsg=CUS "comparator does not offer specified matchtype"; | |
854 | return -1; | |
855 | } | |
856 | } | |
857 | break; | |
858 | } | |
859 | case MATCH_MATCHES: | |
860 | { | |
861 | switch (co) | |
862 | { | |
863 | case COMP_OCTET: | |
864 | { | |
50c99ba6 | 865 | if ((r=eq_glob(needle,haystack,0,1))==-1) |
1c59d63b PH |
866 | { |
867 | filter->errmsg=CUS "syntactically invalid pattern"; | |
868 | return -1; | |
869 | } | |
059ec3d9 PH |
870 | break; |
871 | } | |
5ea81592 | 872 | case COMP_EN_ASCII_CASEMAP: |
059ec3d9 | 873 | { |
50c99ba6 | 874 | if ((r=eq_glob(needle,haystack,1,1))==-1) |
1c59d63b PH |
875 | { |
876 | filter->errmsg=CUS "syntactically invalid pattern"; | |
877 | return -1; | |
878 | } | |
059ec3d9 PH |
879 | break; |
880 | } | |
881 | default: | |
882 | { | |
883 | filter->errmsg=CUS "comparator does not offer specified matchtype"; | |
884 | return -1; | |
885 | } | |
886 | } | |
887 | break; | |
888 | } | |
889 | } | |
f05da2e8 | 890 | if ((filter_test != FTEST_NONE && debug_selector != 0) || |
059ec3d9 PH |
891 | (debug_selector & D_filter) != 0) |
892 | debug_printf(" Result %s\n",r?"true":"false"); | |
893 | return r; | |
894 | } | |
895 | ||
896 | ||
897 | /************************************************* | |
898 | * Check header field syntax * | |
899 | *************************************************/ | |
900 | ||
901 | /* | |
902 | RFC 2822, section 3.6.8 says: | |
903 | ||
904 | field-name = 1*ftext | |
905 | ||
906 | ftext = %d33-57 / ; Any character except | |
907 | %d59-126 ; controls, SP, and | |
908 | ; ":". | |
909 | ||
910 | That forbids 8-bit header fields. This implementation accepts them, since | |
911 | all of Exim is 8-bit clean, so it adds %d128-%d255. | |
912 | ||
913 | Arguments: | |
914 | header header field to quote for suitable use in Exim expansions | |
915 | ||
916 | Returns: 0 string is not a valid header field | |
917 | 1 string is a value header field | |
918 | */ | |
919 | ||
920 | static int is_header(const struct String *header) | |
921 | { | |
922 | size_t l; | |
923 | const uschar *h; | |
924 | ||
925 | l=header->length; | |
926 | h=header->character; | |
927 | if (l==0) return 0; | |
928 | while (l) | |
929 | { | |
930 | if (((unsigned char)*h)<33 || ((unsigned char)*h)==':' || ((unsigned char)*h)==127) return 0; | |
931 | else | |
932 | { | |
933 | ++h; | |
934 | --l; | |
935 | } | |
936 | } | |
937 | return 1; | |
938 | } | |
939 | ||
940 | ||
941 | /************************************************* | |
942 | * Quote special characters string * | |
943 | *************************************************/ | |
944 | ||
945 | /* | |
946 | Arguments: | |
947 | header header field to quote for suitable use in Exim expansions | |
948 | or as debug output | |
949 | ||
950 | Returns: quoted string | |
951 | */ | |
952 | ||
953 | static const uschar *quote(const struct String *header) | |
954 | { | |
955 | uschar *quoted=NULL; | |
956 | int size=0,ptr=0; | |
957 | size_t l; | |
958 | const uschar *h; | |
959 | ||
960 | l=header->length; | |
961 | h=header->character; | |
962 | while (l) | |
963 | { | |
964 | switch (*h) | |
965 | { | |
966 | case '\0': | |
967 | { | |
968 | quoted=string_cat(quoted,&size,&ptr,CUS "\\0",2); | |
969 | break; | |
970 | } | |
971 | case '$': | |
972 | case '{': | |
973 | case '}': | |
974 | { | |
975 | quoted=string_cat(quoted,&size,&ptr,CUS "\\",1); | |
976 | } | |
977 | default: | |
978 | { | |
979 | quoted=string_cat(quoted,&size,&ptr,h,1); | |
980 | } | |
981 | } | |
982 | ++h; | |
983 | --l; | |
984 | } | |
985 | quoted=string_cat(quoted,&size,&ptr,CUS "",1); | |
986 | return quoted; | |
987 | } | |
988 | ||
989 | ||
990 | /************************************************* | |
991 | * Add address to list of generated addresses * | |
992 | *************************************************/ | |
993 | ||
994 | /* | |
995 | According to RFC 3028, duplicate delivery to the same address must | |
996 | not happen, so the list is first searched for the address. | |
997 | ||
998 | Arguments: | |
999 | generated list of generated addresses | |
1000 | addr new address to add | |
1001 | file address denotes a file | |
1002 | ||
1003 | Returns: nothing | |
1004 | */ | |
1005 | ||
1006 | static void add_addr(address_item **generated, uschar *addr, int file, int maxage, int maxmessages, int maxstorage) | |
1007 | { | |
1008 | address_item *new_addr; | |
1009 | ||
1010 | for (new_addr=*generated; new_addr; new_addr=new_addr->next) | |
1011 | { | |
1012 | if (Ustrcmp(new_addr->address,addr)==0 && (file ? testflag(new_addr, af_pfr|af_file) : 1)) | |
1013 | { | |
f05da2e8 | 1014 | if ((filter_test != FTEST_NONE && debug_selector != 0) || (debug_selector & D_filter) != 0) |
059ec3d9 PH |
1015 | { |
1016 | debug_printf("Repeated %s `%s' ignored.\n",file ? "fileinto" : "redirect", addr); | |
1017 | } | |
1018 | return; | |
1019 | } | |
1020 | } | |
1021 | ||
f05da2e8 | 1022 | if ((filter_test != FTEST_NONE && debug_selector != 0) || (debug_selector & D_filter) != 0) |
059ec3d9 PH |
1023 | { |
1024 | debug_printf("%s `%s'\n",file ? "fileinto" : "redirect", addr); | |
1025 | } | |
1026 | new_addr=deliver_make_addr(addr,TRUE); | |
1027 | if (file) | |
1028 | { | |
1029 | setflag(new_addr, af_pfr|af_file); | |
1030 | new_addr->mode = 0; | |
1031 | } | |
1032 | new_addr->p.errors_address = NULL; | |
1033 | new_addr->next = *generated; | |
1034 | *generated = new_addr; | |
1035 | } | |
1036 | ||
1037 | ||
1038 | /************************************************* | |
1039 | * Return decoded header field * | |
1040 | *************************************************/ | |
1041 | ||
1042 | /* | |
50c99ba6 PH |
1043 | Unfold the header field as described in RFC 2822 and remove all |
1044 | leading and trailing white space, then perform MIME decoding and | |
1045 | translate the header field to UTF-8. | |
1046 | ||
059ec3d9 PH |
1047 | Arguments: |
1048 | value returned value of the field | |
1049 | header name of the header field | |
1050 | ||
1051 | Returns: nothing The expanded string is empty | |
1052 | in case there is no such header | |
1053 | */ | |
1054 | ||
1055 | static void expand_header(struct String *value, const struct String *header) | |
1056 | { | |
1057 | uschar *s,*r,*t; | |
1058 | uschar *errmsg; | |
1059 | ||
1060 | value->length=0; | |
1061 | value->character=(uschar*)0; | |
1062 | ||
1063 | t=r=s=expand_string(string_sprintf("$rheader_%s",quote(header))); | |
50c99ba6 | 1064 | while (*r==' ' || *r=='\t') ++r; |
059ec3d9 PH |
1065 | while (*r) |
1066 | { | |
1067 | if (*r=='\n') | |
059ec3d9 | 1068 | ++r; |
059ec3d9 PH |
1069 | else |
1070 | *t++=*r++; | |
1071 | } | |
50c99ba6 PH |
1072 | while (t>s && (*(t-1)==' ' || *(t-1)=='\t')) --t; |
1073 | *t='\0'; | |
a0d6ba8a | 1074 | value->character=rfc2047_decode(s,check_rfc2047_length,US"utf-8",'\0',&value->length,&errmsg); |
059ec3d9 PH |
1075 | } |
1076 | ||
1077 | ||
1078 | /************************************************* | |
1079 | * Parse remaining hash comment * | |
1080 | *************************************************/ | |
1081 | ||
1082 | /* | |
1083 | Token definition: | |
1084 | Comment up to terminating CRLF | |
1085 | ||
1086 | Arguments: | |
1087 | filter points to the Sieve filter including its state | |
1088 | ||
1089 | Returns: 1 success | |
1090 | -1 syntax error | |
1091 | */ | |
1092 | ||
1093 | static int parse_hashcomment(struct Sieve *filter) | |
1094 | { | |
1095 | ++filter->pc; | |
1096 | while (*filter->pc) | |
1097 | { | |
1098 | #ifdef RFC_EOL | |
1099 | if (*filter->pc=='\r' && *(filter->pc+1)=='\n') | |
1100 | #else | |
1101 | if (*filter->pc=='\n') | |
1102 | #endif | |
1103 | { | |
1104 | #ifdef RFC_EOL | |
1105 | filter->pc+=2; | |
1106 | #else | |
1107 | ++filter->pc; | |
1108 | #endif | |
1109 | ++filter->line; | |
1110 | return 1; | |
1111 | } | |
1112 | else ++filter->pc; | |
1113 | } | |
1114 | filter->errmsg=CUS "missing end of comment"; | |
1115 | return -1; | |
1116 | } | |
1117 | ||
1118 | ||
1119 | /************************************************* | |
1120 | * Parse remaining C-style comment * | |
1121 | *************************************************/ | |
1122 | ||
1123 | /* | |
1124 | Token definition: | |
1125 | Everything up to star slash | |
1126 | ||
1127 | Arguments: | |
1128 | filter points to the Sieve filter including its state | |
1129 | ||
1130 | Returns: 1 success | |
1131 | -1 syntax error | |
1132 | */ | |
1133 | ||
1134 | static int parse_comment(struct Sieve *filter) | |
1135 | { | |
1136 | filter->pc+=2; | |
1137 | while (*filter->pc) | |
1138 | { | |
1139 | if (*filter->pc=='*' && *(filter->pc+1)=='/') | |
1140 | { | |
1141 | filter->pc+=2; | |
1142 | return 1; | |
1143 | } | |
1144 | else ++filter->pc; | |
1145 | } | |
1146 | filter->errmsg=CUS "missing end of comment"; | |
1147 | return -1; | |
1148 | } | |
1149 | ||
1150 | ||
1151 | /************************************************* | |
1152 | * Parse optional white space * | |
1153 | *************************************************/ | |
1154 | ||
1155 | /* | |
1156 | Token definition: | |
1157 | Spaces, tabs, CRLFs, hash comments or C-style comments | |
1158 | ||
1159 | Arguments: | |
1160 | filter points to the Sieve filter including its state | |
1161 | ||
1162 | Returns: 1 success | |
1163 | -1 syntax error | |
1164 | */ | |
1165 | ||
1166 | static int parse_white(struct Sieve *filter) | |
1167 | { | |
1168 | while (*filter->pc) | |
1169 | { | |
1170 | if (*filter->pc==' ' || *filter->pc=='\t') ++filter->pc; | |
1171 | #ifdef RFC_EOL | |
1172 | else if (*filter->pc=='\r' && *(filter->pc+1)=='\n') | |
1173 | #else | |
1174 | else if (*filter->pc=='\n') | |
1175 | #endif | |
1176 | { | |
1177 | #ifdef RFC_EOL | |
1178 | filter->pc+=2; | |
1179 | #else | |
1180 | ++filter->pc; | |
1181 | #endif | |
1182 | ++filter->line; | |
1183 | } | |
1184 | else if (*filter->pc=='#') | |
1185 | { | |
1186 | if (parse_hashcomment(filter)==-1) return -1; | |
1187 | } | |
1188 | else if (*filter->pc=='/' && *(filter->pc+1)=='*') | |
1189 | { | |
1190 | if (parse_comment(filter)==-1) return -1; | |
1191 | } | |
1192 | else break; | |
1193 | } | |
1194 | return 1; | |
1195 | } | |
1196 | ||
1197 | ||
a43a27c5 PH |
1198 | #ifdef ENCODED_CHARACTER |
1199 | /************************************************* | |
eb4c0de6 | 1200 | * Decode hex-encoded-character string * |
a43a27c5 PH |
1201 | *************************************************/ |
1202 | ||
1203 | /* | |
1204 | Encoding definition: | |
eb4c0de6 PH |
1205 | blank = SP / TAB / CRLF |
1206 | hex-pair-seq = *blank hex-pair *(1*blank hex-pair) *blank | |
a43a27c5 PH |
1207 | hex-pair = 1*2HEXDIG |
1208 | ||
1209 | Arguments: | |
1210 | src points to a hex-pair-seq | |
1211 | end points to its end | |
1212 | dst points to the destination of the decoded octets, | |
1213 | optionally to (uschar*)0 for checking only | |
1214 | ||
1215 | Returns: >=0 number of decoded octets | |
1216 | -1 syntax error | |
1217 | */ | |
1218 | ||
1219 | static int hex_decode(uschar *src, uschar *end, uschar *dst) | |
1220 | { | |
1221 | int decoded=0; | |
1222 | ||
eb4c0de6 PH |
1223 | while (*src==' ' || *src=='\t' || *src=='\n') ++src; |
1224 | do | |
a43a27c5 | 1225 | { |
eb4c0de6 PH |
1226 | int x,d,n; |
1227 | ||
1228 | for (x=0,d=0; d<2 && src<end && isxdigit(n=tolower(*src)); x=(x<<4)|(n>='0' && n<='9' ? n-'0' : 10+(n-'a')),++d,++src); | |
1229 | if (d==0) return -1; | |
1230 | if (dst) *dst++=x; | |
1231 | ++decoded; | |
1232 | if (src==end) return decoded; | |
1233 | if (*src==' ' || *src=='\t' || *src=='\n') | |
1234 | while (*src==' ' || *src=='\t' || *src=='\n') ++src; | |
1235 | else | |
1236 | return -1; | |
a43a27c5 | 1237 | } |
eb4c0de6 PH |
1238 | while (src<end); |
1239 | return decoded; | |
a43a27c5 PH |
1240 | } |
1241 | ||
1242 | ||
1243 | /************************************************* | |
eb4c0de6 | 1244 | * Decode unicode-encoded-character string * |
a43a27c5 PH |
1245 | *************************************************/ |
1246 | ||
1247 | /* | |
1248 | Encoding definition: | |
eb4c0de6 PH |
1249 | blank = SP / TAB / CRLF |
1250 | unicode-hex-seq = *blank unicode-hex *(blank unicode-hex) *blank | |
1251 | unicode-hex = 1*HEXDIG | |
a43a27c5 PH |
1252 | |
1253 | It is an error for a script to use a hexadecimal value that isn't in | |
1254 | either the range 0 to D7FF or the range E000 to 10FFFF. | |
1255 | ||
eb4c0de6 PH |
1256 | At this time, strings are already scanned, thus the CRLF is converted |
1257 | to the internally used \n (should RFC_EOL have been used). | |
1258 | ||
a43a27c5 PH |
1259 | Arguments: |
1260 | src points to a unicode-hex-seq | |
1261 | end points to its end | |
1262 | dst points to the destination of the decoded octets, | |
1263 | optionally to (uschar*)0 for checking only | |
1264 | ||
1265 | Returns: >=0 number of decoded octets | |
1266 | -1 syntax error | |
1267 | -2 semantic error (character range violation) | |
1268 | */ | |
1269 | ||
1270 | static int unicode_decode(uschar *src, uschar *end, uschar *dst) | |
1271 | { | |
1272 | int decoded=0; | |
1273 | ||
eb4c0de6 PH |
1274 | while (*src==' ' || *src=='\t' || *src=='\n') ++src; |
1275 | do | |
a43a27c5 | 1276 | { |
eb4c0de6 PH |
1277 | uschar *hex_seq; |
1278 | int c,d,n; | |
1279 | ||
1280 | unicode_hex: | |
1281 | for (hex_seq=src; src<end && *src=='0'; ++src); | |
1282 | for (c=0,d=0; d<7 && src<end && isxdigit(n=tolower(*src)); c=(c<<4)|(n>='0' && n<='9' ? n-'0' : 10+(n-'a')),++d,++src); | |
1283 | if (src==hex_seq) return -1; | |
1284 | if (d==7 || (!((c>=0 && c<=0xd7ff) || (c>=0xe000 && c<=0x10ffff)))) return -2; | |
1285 | if (c<128) | |
a43a27c5 | 1286 | { |
eb4c0de6 PH |
1287 | if (dst) *dst++=c; |
1288 | ++decoded; | |
1289 | } | |
1290 | else if (c>=0x80 && c<=0x7ff) | |
1291 | { | |
1292 | if (dst) | |
1293 | { | |
1294 | *dst++=192+(c>>6); | |
1295 | *dst++=128+(c&0x3f); | |
1296 | } | |
1297 | decoded+=2; | |
1298 | } | |
1299 | else if (c>=0x800 && c<=0xffff) | |
1300 | { | |
1301 | if (dst) | |
1302 | { | |
1303 | *dst++=224+(c>>12); | |
1304 | *dst++=128+((c>>6)&0x3f); | |
1305 | *dst++=128+(c&0x3f); | |
1306 | } | |
1307 | decoded+=3; | |
1308 | } | |
1309 | else if (c>=0x10000 && c<=0x1fffff) | |
1310 | { | |
1311 | if (dst) | |
1312 | { | |
1313 | *dst++=240+(c>>18); | |
1314 | *dst++=128+((c>>10)&0x3f); | |
1315 | *dst++=128+((c>>6)&0x3f); | |
1316 | *dst++=128+(c&0x3f); | |
1317 | } | |
1318 | decoded+=4; | |
1319 | } | |
1320 | if (*src==' ' || *src=='\t' || *src=='\n') | |
1321 | { | |
1322 | while (*src==' ' || *src=='\t' || *src=='\n') ++src; | |
1323 | if (src==end) return decoded; | |
1324 | goto unicode_hex; | |
a43a27c5 | 1325 | } |
a43a27c5 | 1326 | } |
eb4c0de6 PH |
1327 | while (src<end); |
1328 | return decoded; | |
a43a27c5 PH |
1329 | } |
1330 | ||
1331 | ||
1332 | /************************************************* | |
1333 | * Decode encoded-character string * | |
1334 | *************************************************/ | |
1335 | ||
1336 | /* | |
1337 | Encoding definition: | |
1338 | encoded-arb-octets = "${hex:" hex-pair-seq "}" | |
1339 | encoded-unicode-char = "${unicode:" unicode-hex-seq "}" | |
1340 | ||
1341 | Arguments: | |
1342 | encoded points to an encoded string, returns decoded string | |
1343 | filter points to the Sieve filter including its state | |
1344 | ||
1345 | Returns: 1 success | |
1346 | -1 syntax error | |
1347 | */ | |
1348 | ||
1349 | static int string_decode(struct Sieve *filter, struct String *data) | |
1350 | { | |
1351 | uschar *src,*dst,*end; | |
1352 | ||
1353 | src=data->character; | |
1354 | dst=src; | |
1355 | end=data->character+data->length; | |
1356 | while (src<end) | |
1357 | { | |
1358 | uschar *brace; | |
1359 | ||
1360 | if ( | |
eb4c0de6 | 1361 | strncmpic(src,US "${hex:",6)==0 |
a43a27c5 PH |
1362 | && (brace=Ustrchr(src+6,'}'))!=(uschar*)0 |
1363 | && (hex_decode(src+6,brace,(uschar*)0))>=0 | |
1364 | ) | |
1365 | { | |
1366 | dst+=hex_decode(src+6,brace,dst); | |
1367 | src=brace+1; | |
1368 | } | |
1369 | else if ( | |
eb4c0de6 | 1370 | strncmpic(src,US "${unicode:",10)==0 |
a43a27c5 PH |
1371 | && (brace=Ustrchr(src+10,'}'))!=(uschar*)0 |
1372 | ) | |
1373 | { | |
1374 | switch (unicode_decode(src+10,brace,(uschar*)0)) | |
1375 | { | |
1376 | case -2: | |
1377 | { | |
1378 | filter->errmsg=CUS "unicode character out of range"; | |
1379 | return -1; | |
1380 | } | |
1381 | case -1: | |
1382 | { | |
1383 | *dst++=*src++; | |
1384 | break; | |
1385 | } | |
1386 | default: | |
1387 | { | |
1388 | dst+=unicode_decode(src+10,brace,dst); | |
1389 | src=brace+1; | |
1390 | } | |
1391 | } | |
1392 | } | |
1393 | else *dst++=*src++; | |
1394 | } | |
1395 | data->length=dst-data->character; | |
1396 | *dst='\0'; | |
1397 | return 1; | |
1398 | } | |
1399 | #endif | |
1400 | ||
1401 | ||
059ec3d9 | 1402 | /************************************************* |
a43a27c5 | 1403 | * Parse an optional string * |
059ec3d9 PH |
1404 | *************************************************/ |
1405 | ||
1406 | /* | |
1407 | Token definition: | |
1408 | quoted-string = DQUOTE *CHAR DQUOTE | |
1409 | ;; in general, \ CHAR inside a string maps to CHAR | |
1410 | ;; so \" maps to " and \\ maps to \ | |
1411 | ;; note that newlines and other characters are all allowed | |
1412 | ;; in strings | |
1413 | ||
1414 | multi-line = "text:" *(SP / HTAB) (hash-comment / CRLF) | |
1415 | *(multi-line-literal / multi-line-dotstuff) | |
1416 | "." CRLF | |
1417 | multi-line-literal = [CHAR-NOT-DOT *CHAR-NOT-CRLF] CRLF | |
1418 | multi-line-dotstuff = "." 1*CHAR-NOT-CRLF CRLF | |
1419 | ;; A line containing only "." ends the multi-line. | |
1420 | ;; Remove a leading '.' if followed by another '.'. | |
1421 | string = quoted-string / multi-line | |
1422 | ||
1423 | Arguments: | |
1424 | filter points to the Sieve filter including its state | |
1425 | id specifies identifier to match | |
1426 | ||
1427 | Returns: 1 success | |
1428 | -1 syntax error | |
1429 | 0 identifier not matched | |
1430 | */ | |
1431 | ||
1432 | static int parse_string(struct Sieve *filter, struct String *data) | |
1433 | { | |
1434 | int dataCapacity=0; | |
1435 | ||
1436 | data->length=0; | |
1437 | data->character=(uschar*)0; | |
1438 | if (*filter->pc=='"') /* quoted string */ | |
1439 | { | |
1440 | ++filter->pc; | |
1441 | while (*filter->pc) | |
1442 | { | |
1443 | if (*filter->pc=='"') /* end of string */ | |
1444 | { | |
1445 | int foo=data->length; | |
1446 | ||
1447 | ++filter->pc; | |
50c99ba6 | 1448 | /* that way, there will be at least one character allocated */ |
059ec3d9 | 1449 | data->character=string_cat(data->character,&dataCapacity,&foo,CUS "",1); |
a43a27c5 PH |
1450 | #ifdef ENCODED_CHARACTER |
1451 | if (filter->require_encoded_character | |
1452 | && string_decode(filter,data)==-1) | |
1453 | return -1; | |
1454 | #endif | |
059ec3d9 PH |
1455 | return 1; |
1456 | } | |
1457 | else if (*filter->pc=='\\' && *(filter->pc+1)) /* quoted character */ | |
1458 | { | |
1459 | if (*(filter->pc+1)=='0') data->character=string_cat(data->character,&dataCapacity,&data->length,CUS "",1); | |
1460 | else data->character=string_cat(data->character,&dataCapacity,&data->length,filter->pc+1,1); | |
1461 | filter->pc+=2; | |
1462 | } | |
1463 | else /* regular character */ | |
1464 | { | |
50c99ba6 PH |
1465 | #ifdef RFC_EOL |
1466 | if (*filter->pc=='\r' && *(filter->pc+1)=='\n') ++filter->line; | |
1467 | #else | |
1468 | if (*filter->pc=='\n') | |
1469 | { | |
1470 | data->character=string_cat(data->character,&dataCapacity,&data->length,US"\r",1); | |
1471 | ++filter->line; | |
1472 | } | |
1473 | #endif | |
059ec3d9 PH |
1474 | data->character=string_cat(data->character,&dataCapacity,&data->length,filter->pc,1); |
1475 | filter->pc++; | |
1476 | } | |
1477 | } | |
1478 | filter->errmsg=CUS "missing end of string"; | |
1479 | return -1; | |
1480 | } | |
1481 | else if (Ustrncmp(filter->pc,CUS "text:",5)==0) /* multiline string */ | |
1482 | { | |
1483 | filter->pc+=5; | |
1484 | /* skip optional white space followed by hashed comment or CRLF */ | |
1485 | while (*filter->pc==' ' || *filter->pc=='\t') ++filter->pc; | |
1486 | if (*filter->pc=='#') | |
1487 | { | |
1488 | if (parse_hashcomment(filter)==-1) return -1; | |
1489 | } | |
1490 | #ifdef RFC_EOL | |
1491 | else if (*filter->pc=='\r' && *(filter->pc+1)=='\n') | |
1492 | #else | |
1493 | else if (*filter->pc=='\n') | |
1494 | #endif | |
1495 | { | |
1496 | #ifdef RFC_EOL | |
1497 | filter->pc+=2; | |
1498 | #else | |
1499 | ++filter->pc; | |
1500 | #endif | |
1501 | ++filter->line; | |
1502 | } | |
1503 | else | |
1504 | { | |
1505 | filter->errmsg=CUS "syntax error"; | |
1506 | return -1; | |
1507 | } | |
1508 | while (*filter->pc) | |
1509 | { | |
1510 | #ifdef RFC_EOL | |
1511 | if (*filter->pc=='\r' && *(filter->pc+1)=='\n') /* end of line */ | |
1512 | #else | |
1513 | if (*filter->pc=='\n') /* end of line */ | |
1514 | #endif | |
1515 | { | |
1516 | data->character=string_cat(data->character,&dataCapacity,&data->length,CUS "\r\n",2); | |
1517 | #ifdef RFC_EOL | |
1518 | filter->pc+=2; | |
1519 | #else | |
1520 | ++filter->pc; | |
1521 | #endif | |
1522 | ++filter->line; | |
1523 | #ifdef RFC_EOL | |
1524 | if (*filter->pc=='.' && *(filter->pc+1)=='\r' && *(filter->pc+2)=='\n') /* end of string */ | |
1525 | #else | |
1526 | if (*filter->pc=='.' && *(filter->pc+1)=='\n') /* end of string */ | |
1527 | #endif | |
1528 | { | |
50c99ba6 PH |
1529 | int foo=data->length; |
1530 | ||
1531 | /* that way, there will be at least one character allocated */ | |
1532 | data->character=string_cat(data->character,&dataCapacity,&foo,CUS "",1); | |
059ec3d9 PH |
1533 | #ifdef RFC_EOL |
1534 | filter->pc+=3; | |
1535 | #else | |
1536 | filter->pc+=2; | |
1537 | #endif | |
1538 | ++filter->line; | |
a43a27c5 PH |
1539 | #ifdef ENCODED_CHARACTER |
1540 | if (filter->require_encoded_character | |
1541 | && string_decode(filter,data)==-1) | |
1542 | return -1; | |
1543 | #endif | |
059ec3d9 PH |
1544 | return 1; |
1545 | } | |
1546 | else if (*filter->pc=='.' && *(filter->pc+1)=='.') /* remove dot stuffing */ | |
1547 | { | |
1548 | data->character=string_cat(data->character,&dataCapacity,&data->length,CUS ".",1); | |
1549 | filter->pc+=2; | |
1550 | } | |
1551 | } | |
1552 | else /* regular character */ | |
1553 | { | |
1554 | data->character=string_cat(data->character,&dataCapacity,&data->length,filter->pc,1); | |
1555 | filter->pc++; | |
1556 | } | |
1557 | } | |
1558 | filter->errmsg=CUS "missing end of multi line string"; | |
1559 | return -1; | |
1560 | } | |
1561 | else return 0; | |
1562 | } | |
1563 | ||
1564 | ||
1565 | /************************************************* | |
1566 | * Parse a specific identifier * | |
1567 | *************************************************/ | |
1568 | ||
1569 | /* | |
1570 | Token definition: | |
1571 | identifier = (ALPHA / "_") *(ALPHA DIGIT "_") | |
1572 | ||
1573 | Arguments: | |
1574 | filter points to the Sieve filter including its state | |
1575 | id specifies identifier to match | |
1576 | ||
1577 | Returns: 1 success | |
1578 | 0 identifier not matched | |
1579 | */ | |
1580 | ||
1581 | static int parse_identifier(struct Sieve *filter, const uschar *id) | |
1582 | { | |
1583 | size_t idlen=Ustrlen(id); | |
1584 | ||
eb4c0de6 | 1585 | if (strncmpic(US filter->pc,US id,idlen)==0) |
059ec3d9 PH |
1586 | { |
1587 | uschar next=filter->pc[idlen]; | |
1588 | ||
1589 | if ((next>='A' && next<='Z') || (next>='a' && next<='z') || next=='_' || (next>='0' && next<='9')) return 0; | |
1590 | filter->pc+=idlen; | |
1591 | return 1; | |
1592 | } | |
1593 | else return 0; | |
1594 | } | |
1595 | ||
1596 | ||
1597 | /************************************************* | |
1598 | * Parse a number * | |
1599 | *************************************************/ | |
1600 | ||
1601 | /* | |
1602 | Token definition: | |
1603 | number = 1*DIGIT [QUANTIFIER] | |
1604 | QUANTIFIER = "K" / "M" / "G" | |
1605 | ||
1606 | Arguments: | |
1607 | filter points to the Sieve filter including its state | |
1608 | data returns value | |
1609 | ||
1610 | Returns: 1 success | |
1611 | -1 no string list found | |
1612 | */ | |
1613 | ||
1614 | static int parse_number(struct Sieve *filter, unsigned long *data) | |
1615 | { | |
1616 | unsigned long d,u; | |
1617 | ||
1618 | if (*filter->pc>='0' && *filter->pc<='9') | |
1619 | { | |
1620 | uschar *e; | |
1621 | ||
1622 | errno=0; | |
1623 | d=Ustrtoul(filter->pc,&e,10); | |
1624 | if (errno==ERANGE) | |
1625 | { | |
1626 | filter->errmsg=CUstrerror(ERANGE); | |
1627 | return -1; | |
1628 | } | |
1629 | filter->pc=e; | |
1630 | u=1; | |
1631 | if (*filter->pc=='K') { u=1024; ++filter->pc; } | |
1632 | else if (*filter->pc=='M') { u=1024*1024; ++filter->pc; } | |
1633 | else if (*filter->pc=='G') { u=1024*1024*1024; ++filter->pc; } | |
1634 | if (d>(ULONG_MAX/u)) | |
1635 | { | |
1636 | filter->errmsg=CUstrerror(ERANGE); | |
1637 | return -1; | |
1638 | } | |
1639 | d*=u; | |
1640 | *data=d; | |
1641 | return 1; | |
1642 | } | |
1643 | else | |
1644 | { | |
1645 | filter->errmsg=CUS "missing number"; | |
1646 | return -1; | |
1647 | } | |
1648 | } | |
1649 | ||
1650 | ||
1651 | /************************************************* | |
1652 | * Parse a string list * | |
1653 | *************************************************/ | |
1654 | ||
1655 | /* | |
1656 | Grammar: | |
1657 | string-list = "[" string *("," string) "]" / string | |
1658 | ||
1659 | Arguments: | |
1660 | filter points to the Sieve filter including its state | |
1661 | data returns string list | |
1662 | ||
1663 | Returns: 1 success | |
1664 | -1 no string list found | |
1665 | */ | |
1666 | ||
1667 | static int parse_stringlist(struct Sieve *filter, struct String **data) | |
1668 | { | |
1669 | const uschar *orig=filter->pc; | |
1670 | int dataCapacity=0; | |
1671 | int dataLength=0; | |
1672 | struct String *d=(struct String*)0; | |
1673 | int m; | |
1674 | ||
1675 | if (*filter->pc=='[') /* string list */ | |
1676 | { | |
1677 | ++filter->pc; | |
1678 | for (;;) | |
1679 | { | |
1680 | if (parse_white(filter)==-1) goto error; | |
1681 | if ((dataLength+1)>=dataCapacity) /* increase buffer */ | |
1682 | { | |
1683 | struct String *new; | |
1684 | int newCapacity; /* Don't amalgamate with next line; some compilers grumble */ | |
1685 | newCapacity=dataCapacity?(dataCapacity*=2):(dataCapacity=4); | |
1686 | if ((new=(struct String*)store_get(sizeof(struct String)*newCapacity))==(struct String*)0) | |
1687 | { | |
1688 | filter->errmsg=CUstrerror(errno); | |
1689 | goto error; | |
1690 | } | |
1691 | if (d) memcpy(new,d,sizeof(struct String)*dataLength); | |
1692 | d=new; | |
1693 | dataCapacity=newCapacity; | |
1694 | } | |
1695 | m=parse_string(filter,&d[dataLength]); | |
1696 | if (m==0) | |
1697 | { | |
1698 | if (dataLength==0) break; | |
1699 | else | |
1700 | { | |
1701 | filter->errmsg=CUS "missing string"; | |
1702 | goto error; | |
1703 | } | |
1704 | } | |
1705 | else if (m==-1) goto error; | |
1706 | else ++dataLength; | |
1707 | if (parse_white(filter)==-1) goto error; | |
1708 | if (*filter->pc==',') ++filter->pc; | |
1709 | else break; | |
1710 | } | |
1711 | if (*filter->pc==']') | |
1712 | { | |
1713 | d[dataLength].character=(uschar*)0; | |
1714 | d[dataLength].length=-1; | |
1715 | ++filter->pc; | |
1716 | *data=d; | |
1717 | return 1; | |
1718 | } | |
1719 | else | |
1720 | { | |
1721 | filter->errmsg=CUS "missing closing bracket"; | |
1722 | goto error; | |
1723 | } | |
1724 | } | |
1725 | else /* single string */ | |
1726 | { | |
1727 | if ((d=store_get(sizeof(struct String)*2))==(struct String*)0) | |
1728 | { | |
1729 | return -1; | |
1730 | } | |
1731 | m=parse_string(filter,&d[0]); | |
1732 | if (m==-1) | |
1733 | { | |
1734 | return -1; | |
1735 | } | |
1736 | else if (m==0) | |
1737 | { | |
1738 | filter->pc=orig; | |
1739 | return 0; | |
1740 | } | |
1741 | else | |
1742 | { | |
1743 | d[1].character=(uschar*)0; | |
1744 | d[1].length=-1; | |
1745 | *data=d; | |
1746 | return 1; | |
1747 | } | |
1748 | } | |
1749 | error: | |
1750 | filter->errmsg=CUS "missing string list"; | |
1751 | return -1; | |
1752 | } | |
1753 | ||
1754 | ||
1755 | /************************************************* | |
1756 | * Parse an optional address part specifier * | |
1757 | *************************************************/ | |
1758 | ||
1759 | /* | |
1760 | Grammar: | |
1761 | address-part = ":localpart" / ":domain" / ":all" | |
1762 | address-part =/ ":user" / ":detail" | |
1763 | ||
1764 | Arguments: | |
1765 | filter points to the Sieve filter including its state | |
1766 | a returns address part specified | |
1767 | ||
1768 | Returns: 1 success | |
1769 | 0 no comparator found | |
1770 | -1 syntax error | |
1771 | */ | |
1772 | ||
1773 | static int parse_addresspart(struct Sieve *filter, enum AddressPart *a) | |
1774 | { | |
1775 | #ifdef SUBADDRESS | |
1776 | if (parse_identifier(filter,CUS ":user")==1) | |
1777 | { | |
1778 | if (!filter->require_subaddress) | |
1779 | { | |
1780 | filter->errmsg=CUS "missing previous require \"subaddress\";"; | |
1781 | return -1; | |
1782 | } | |
1783 | *a=ADDRPART_USER; | |
1784 | return 1; | |
1785 | } | |
1786 | else if (parse_identifier(filter,CUS ":detail")==1) | |
1787 | { | |
1788 | if (!filter->require_subaddress) | |
1789 | { | |
1790 | filter->errmsg=CUS "missing previous require \"subaddress\";"; | |
1791 | return -1; | |
1792 | } | |
1793 | *a=ADDRPART_DETAIL; | |
1794 | return 1; | |
1795 | } | |
1796 | else | |
1797 | #endif | |
1798 | if (parse_identifier(filter,CUS ":localpart")==1) | |
1799 | { | |
1800 | *a=ADDRPART_LOCALPART; | |
1801 | return 1; | |
1802 | } | |
1803 | else if (parse_identifier(filter,CUS ":domain")==1) | |
1804 | { | |
1805 | *a=ADDRPART_DOMAIN; | |
1806 | return 1; | |
1807 | } | |
1808 | else if (parse_identifier(filter,CUS ":all")==1) | |
1809 | { | |
1810 | *a=ADDRPART_ALL; | |
1811 | return 1; | |
1812 | } | |
1813 | else return 0; | |
1814 | } | |
1815 | ||
1816 | ||
1817 | /************************************************* | |
1818 | * Parse an optional comparator * | |
1819 | *************************************************/ | |
1820 | ||
1821 | /* | |
1822 | Grammar: | |
1823 | comparator = ":comparator" <comparator-name: string> | |
1824 | ||
1825 | Arguments: | |
1826 | filter points to the Sieve filter including its state | |
1827 | c returns comparator | |
1828 | ||
1829 | Returns: 1 success | |
1830 | 0 no comparator found | |
1831 | -1 incomplete comparator found | |
1832 | */ | |
1833 | ||
1834 | static int parse_comparator(struct Sieve *filter, enum Comparator *c) | |
1835 | { | |
1836 | struct String comparator_name; | |
1837 | ||
1838 | if (parse_identifier(filter,CUS ":comparator")==0) return 0; | |
1839 | if (parse_white(filter)==-1) return -1; | |
1840 | switch (parse_string(filter,&comparator_name)) | |
1841 | { | |
1842 | case -1: return -1; | |
1843 | case 0: | |
1844 | { | |
1845 | filter->errmsg=CUS "missing comparator"; | |
1846 | return -1; | |
1847 | } | |
1848 | default: | |
1849 | { | |
1850 | int match; | |
1851 | ||
1852 | if (eq_asciicase(&comparator_name,&str_ioctet,0)) | |
1853 | { | |
1854 | *c=COMP_OCTET; | |
1855 | match=1; | |
1856 | } | |
1857 | else if (eq_asciicase(&comparator_name,&str_iascii_casemap,0)) | |
1858 | { | |
5ea81592 PH |
1859 | *c=COMP_EN_ASCII_CASEMAP; |
1860 | match=1; | |
1861 | } | |
1862 | else if (eq_asciicase(&comparator_name,&str_enascii_casemap,0)) | |
1863 | { | |
1864 | *c=COMP_EN_ASCII_CASEMAP; | |
059ec3d9 PH |
1865 | match=1; |
1866 | } | |
1867 | else if (eq_asciicase(&comparator_name,&str_iascii_numeric,0)) | |
1868 | { | |
1869 | *c=COMP_ASCII_NUMERIC; | |
1870 | match=1; | |
1871 | } | |
1872 | else | |
1873 | { | |
1874 | filter->errmsg=CUS "invalid comparator"; | |
1875 | match=-1; | |
1876 | } | |
1877 | return match; | |
1878 | } | |
1879 | } | |
1880 | } | |
1881 | ||
1882 | ||
1883 | /************************************************* | |
1884 | * Parse an optional match type * | |
1885 | *************************************************/ | |
1886 | ||
1887 | /* | |
1888 | Grammar: | |
1889 | match-type = ":is" / ":contains" / ":matches" | |
1890 | ||
1891 | Arguments: | |
1892 | filter points to the Sieve filter including its state | |
1893 | m returns match type | |
1894 | ||
1895 | Returns: 1 success | |
1896 | 0 no match type found | |
1897 | */ | |
1898 | ||
1899 | static int parse_matchtype(struct Sieve *filter, enum MatchType *m) | |
1900 | { | |
1901 | if (parse_identifier(filter,CUS ":is")==1) | |
1902 | { | |
1903 | *m=MATCH_IS; | |
1904 | return 1; | |
1905 | } | |
1906 | else if (parse_identifier(filter,CUS ":contains")==1) | |
1907 | { | |
1908 | *m=MATCH_CONTAINS; | |
1909 | return 1; | |
1910 | } | |
1911 | else if (parse_identifier(filter,CUS ":matches")==1) | |
1912 | { | |
1913 | *m=MATCH_MATCHES; | |
1914 | return 1; | |
1915 | } | |
1916 | else return 0; | |
1917 | } | |
1918 | ||
1919 | ||
1920 | /************************************************* | |
1921 | * Parse and interpret an optional test list * | |
1922 | *************************************************/ | |
1923 | ||
1924 | /* | |
1925 | Grammar: | |
1926 | test-list = "(" test *("," test) ")" | |
1927 | ||
1928 | Arguments: | |
1929 | filter points to the Sieve filter including its state | |
1930 | n total number of tests | |
1931 | true number of passed tests | |
1932 | exec Execute parsed statements | |
1933 | ||
1934 | Returns: 1 success | |
1935 | 0 no test list found | |
1936 | -1 syntax or execution error | |
1937 | */ | |
1938 | ||
1939 | static int parse_testlist(struct Sieve *filter, int *n, int *true, int exec) | |
1940 | { | |
1941 | if (parse_white(filter)==-1) return -1; | |
1942 | if (*filter->pc=='(') | |
1943 | { | |
1944 | ++filter->pc; | |
1945 | *n=0; | |
1946 | *true=0; | |
1947 | for (;;) | |
1948 | { | |
1949 | int cond; | |
1950 | ||
1951 | switch (parse_test(filter,&cond,exec)) | |
1952 | { | |
1953 | case -1: return -1; | |
1954 | case 0: filter->errmsg=CUS "missing test"; return -1; | |
1955 | default: ++*n; if (cond) ++*true; break; | |
1956 | } | |
1957 | if (parse_white(filter)==-1) return -1; | |
1958 | if (*filter->pc==',') ++filter->pc; | |
1959 | else break; | |
1960 | } | |
1961 | if (*filter->pc==')') | |
1962 | { | |
1963 | ++filter->pc; | |
1964 | return 1; | |
1965 | } | |
1966 | else | |
1967 | { | |
1968 | filter->errmsg=CUS "missing closing paren"; | |
1969 | return -1; | |
1970 | } | |
1971 | } | |
1972 | else return 0; | |
1973 | } | |
1974 | ||
1975 | ||
1976 | /************************************************* | |
1977 | * Parse and interpret an optional test * | |
1978 | *************************************************/ | |
1979 | ||
1980 | /* | |
1981 | Arguments: | |
1982 | filter points to the Sieve filter including its state | |
1983 | cond returned condition status | |
1984 | exec Execute parsed statements | |
1985 | ||
1986 | Returns: 1 success | |
1987 | 0 no test found | |
1988 | -1 syntax or execution error | |
1989 | */ | |
1990 | ||
1991 | static int parse_test(struct Sieve *filter, int *cond, int exec) | |
1992 | { | |
1993 | if (parse_white(filter)==-1) return -1; | |
1994 | if (parse_identifier(filter,CUS "address")) | |
1995 | { | |
1996 | /* | |
1997 | address-test = "address" { [address-part] [comparator] [match-type] } | |
1998 | <header-list: string-list> <key-list: string-list> | |
1999 | ||
2000 | header-list From, To, Cc, Bcc, Sender, Resent-From, Resent-To | |
2001 | */ | |
2002 | ||
2003 | enum AddressPart addressPart=ADDRPART_ALL; | |
5ea81592 | 2004 | enum Comparator comparator=COMP_EN_ASCII_CASEMAP; |
059ec3d9 PH |
2005 | enum MatchType matchType=MATCH_IS; |
2006 | struct String *hdr,*h,*key,*k; | |
2007 | int m; | |
2008 | int ap=0,co=0,mt=0; | |
2009 | ||
2010 | for (;;) | |
2011 | { | |
2012 | if (parse_white(filter)==-1) return -1; | |
2013 | if ((m=parse_addresspart(filter,&addressPart))!=0) | |
2014 | { | |
2015 | if (m==-1) return -1; | |
2016 | if (ap) | |
2017 | { | |
2018 | filter->errmsg=CUS "address part already specified"; | |
2019 | return -1; | |
2020 | } | |
2021 | else ap=1; | |
2022 | } | |
2023 | else if ((m=parse_comparator(filter,&comparator))!=0) | |
2024 | { | |
2025 | if (m==-1) return -1; | |
2026 | if (co) | |
2027 | { | |
2028 | filter->errmsg=CUS "comparator already specified"; | |
2029 | return -1; | |
2030 | } | |
2031 | else co=1; | |
2032 | } | |
2033 | else if ((m=parse_matchtype(filter,&matchType))!=0) | |
2034 | { | |
2035 | if (m==-1) return -1; | |
2036 | if (mt) | |
2037 | { | |
2038 | filter->errmsg=CUS "match type already specified"; | |
2039 | return -1; | |
2040 | } | |
2041 | else mt=1; | |
2042 | } | |
2043 | else break; | |
2044 | } | |
2045 | if (parse_white(filter)==-1) return -1; | |
2046 | if ((m=parse_stringlist(filter,&hdr))!=1) | |
2047 | { | |
2048 | if (m==0) filter->errmsg=CUS "header string list expected"; | |
2049 | return -1; | |
2050 | } | |
2051 | if (parse_white(filter)==-1) return -1; | |
2052 | if ((m=parse_stringlist(filter,&key))!=1) | |
2053 | { | |
2054 | if (m==0) filter->errmsg=CUS "key string list expected"; | |
2055 | return -1; | |
2056 | } | |
2057 | *cond=0; | |
2058 | for (h=hdr; h->length!=-1 && !*cond; ++h) | |
2059 | { | |
2060 | uschar *header_value=(uschar*)0,*extracted_addr,*end_addr; | |
2061 | ||
2062 | if | |
2063 | ( | |
2064 | !eq_asciicase(h,&str_from,0) | |
2065 | && !eq_asciicase(h,&str_to,0) | |
2066 | && !eq_asciicase(h,&str_cc,0) | |
2067 | && !eq_asciicase(h,&str_bcc,0) | |
2068 | && !eq_asciicase(h,&str_sender,0) | |
2069 | && !eq_asciicase(h,&str_resent_from,0) | |
2070 | && !eq_asciicase(h,&str_resent_to,0) | |
2071 | ) | |
2072 | { | |
2073 | filter->errmsg=CUS "invalid header field"; | |
2074 | return -1; | |
2075 | } | |
2076 | if (exec) | |
2077 | { | |
2078 | /* We are only interested in addresses below, so no MIME decoding */ | |
2079 | header_value=expand_string(string_sprintf("$rheader_%s",quote(h))); | |
2080 | if (header_value == NULL) | |
2081 | { | |
2082 | filter->errmsg=CUS "header string expansion failed"; | |
2083 | return -1; | |
2084 | } | |
2085 | parse_allow_group = TRUE; | |
2086 | while (*header_value && !*cond) | |
2087 | { | |
2088 | uschar *error; | |
2089 | int start, end, domain; | |
2090 | int saveend; | |
2091 | uschar *part=NULL; | |
2092 | ||
2093 | end_addr = parse_find_address_end(header_value, FALSE); | |
2094 | saveend = *end_addr; | |
2095 | *end_addr = 0; | |
2096 | extracted_addr = parse_extract_address(header_value, &error, &start, &end, &domain, FALSE); | |
2097 | ||
2098 | if (extracted_addr) switch (addressPart) | |
2099 | { | |
2100 | case ADDRPART_ALL: part=extracted_addr; break; | |
2101 | #ifdef SUBADDRESS | |
2102 | case ADDRPART_USER: | |
2103 | #endif | |
2104 | case ADDRPART_LOCALPART: part=extracted_addr; part[domain-1]='\0'; break; | |
2105 | case ADDRPART_DOMAIN: part=extracted_addr+domain; break; | |
2106 | #ifdef SUBADDRESS | |
e4a89c47 | 2107 | case ADDRPART_DETAIL: part=NULL; break; |
059ec3d9 | 2108 | #endif |
059ec3d9 PH |
2109 | } |
2110 | ||
2111 | *end_addr = saveend; | |
2112 | if (part) | |
2113 | { | |
2114 | for (k=key; k->length!=-1; ++k) | |
2115 | { | |
2116 | struct String partStr; | |
2117 | ||
2118 | partStr.character=part; | |
2119 | partStr.length=Ustrlen(part); | |
2120 | if (extracted_addr) | |
2121 | { | |
2122 | *cond=compare(filter,k,&partStr,comparator,matchType); | |
2123 | if (*cond==-1) return -1; | |
2124 | if (*cond) break; | |
2125 | } | |
2126 | } | |
2127 | } | |
2128 | if (saveend == 0) break; | |
2129 | header_value = end_addr + 1; | |
2130 | } | |
1eccaa59 PH |
2131 | parse_allow_group = FALSE; |
2132 | parse_found_group = FALSE; | |
059ec3d9 PH |
2133 | } |
2134 | } | |
2135 | return 1; | |
2136 | } | |
2137 | else if (parse_identifier(filter,CUS "allof")) | |
2138 | { | |
2139 | /* | |
2140 | allof-test = "allof" <tests: test-list> | |
2141 | */ | |
2142 | ||
2143 | int n,true; | |
2144 | ||
2145 | switch (parse_testlist(filter,&n,&true,exec)) | |
2146 | { | |
2147 | case -1: return -1; | |
2148 | case 0: filter->errmsg=CUS "missing test list"; return -1; | |
2149 | default: *cond=(n==true); return 1; | |
2150 | } | |
2151 | } | |
2152 | else if (parse_identifier(filter,CUS "anyof")) | |
2153 | { | |
2154 | /* | |
2155 | anyof-test = "anyof" <tests: test-list> | |
2156 | */ | |
2157 | ||
2158 | int n,true; | |
2159 | ||
2160 | switch (parse_testlist(filter,&n,&true,exec)) | |
2161 | { | |
2162 | case -1: return -1; | |
2163 | case 0: filter->errmsg=CUS "missing test list"; return -1; | |
2164 | default: *cond=(true>0); return 1; | |
2165 | } | |
2166 | } | |
2167 | else if (parse_identifier(filter,CUS "exists")) | |
2168 | { | |
2169 | /* | |
2170 | exists-test = "exists" <header-names: string-list> | |
2171 | */ | |
2172 | ||
2173 | struct String *hdr,*h; | |
2174 | int m; | |
2175 | ||
2176 | if (parse_white(filter)==-1) return -1; | |
2177 | if ((m=parse_stringlist(filter,&hdr))!=1) | |
2178 | { | |
2179 | if (m==0) filter->errmsg=CUS "header string list expected"; | |
2180 | return -1; | |
2181 | } | |
2182 | if (exec) | |
2183 | { | |
2184 | *cond=1; | |
2185 | for (h=hdr; h->length!=-1 && *cond; ++h) | |
2186 | { | |
2187 | uschar *header_def; | |
2188 | ||
2189 | header_def=expand_string(string_sprintf("${if def:header_%s {true}{false}}",quote(h))); | |
2190 | if (header_def == NULL) | |
2191 | { | |
2192 | filter->errmsg=CUS "header string expansion failed"; | |
2193 | return -1; | |
2194 | } | |
2195 | if (Ustrcmp(header_def,"false")==0) *cond=0; | |
2196 | } | |
2197 | } | |
2198 | return 1; | |
2199 | } | |
2200 | else if (parse_identifier(filter,CUS "false")) | |
2201 | { | |
2202 | /* | |
2203 | false-test = "false" | |
2204 | */ | |
2205 | ||
2206 | *cond=0; | |
2207 | return 1; | |
2208 | } | |
2209 | else if (parse_identifier(filter,CUS "header")) | |
2210 | { | |
2211 | /* | |
2212 | header-test = "header" { [comparator] [match-type] } | |
2213 | <header-names: string-list> <key-list: string-list> | |
2214 | */ | |
2215 | ||
5ea81592 | 2216 | enum Comparator comparator=COMP_EN_ASCII_CASEMAP; |
059ec3d9 PH |
2217 | enum MatchType matchType=MATCH_IS; |
2218 | struct String *hdr,*h,*key,*k; | |
2219 | int m; | |
2220 | int co=0,mt=0; | |
2221 | ||
2222 | for (;;) | |
2223 | { | |
2224 | if (parse_white(filter)==-1) return -1; | |
2225 | if ((m=parse_comparator(filter,&comparator))!=0) | |
2226 | { | |
2227 | if (m==-1) return -1; | |
2228 | if (co) | |
2229 | { | |
2230 | filter->errmsg=CUS "comparator already specified"; | |
2231 | return -1; | |
2232 | } | |
2233 | else co=1; | |
2234 | } | |
2235 | else if ((m=parse_matchtype(filter,&matchType))!=0) | |
2236 | { | |
2237 | if (m==-1) return -1; | |
2238 | if (mt) | |
2239 | { | |
2240 | filter->errmsg=CUS "match type already specified"; | |
2241 | return -1; | |
2242 | } | |
2243 | else mt=1; | |
2244 | } | |
2245 | else break; | |
2246 | } | |
2247 | if (parse_white(filter)==-1) return -1; | |
2248 | if ((m=parse_stringlist(filter,&hdr))!=1) | |
2249 | { | |
2250 | if (m==0) filter->errmsg=CUS "header string list expected"; | |
2251 | return -1; | |
2252 | } | |
2253 | if (parse_white(filter)==-1) return -1; | |
2254 | if ((m=parse_stringlist(filter,&key))!=1) | |
2255 | { | |
2256 | if (m==0) filter->errmsg=CUS "key string list expected"; | |
2257 | return -1; | |
2258 | } | |
2259 | *cond=0; | |
2260 | for (h=hdr; h->length!=-1 && !*cond; ++h) | |
2261 | { | |
2262 | if (!is_header(h)) | |
2263 | { | |
2264 | filter->errmsg=CUS "invalid header field"; | |
2265 | return -1; | |
2266 | } | |
2267 | if (exec) | |
2268 | { | |
2269 | struct String header_value; | |
2270 | uschar *header_def; | |
2271 | ||
2272 | expand_header(&header_value,h); | |
2273 | header_def=expand_string(string_sprintf("${if def:header_%s {true}{false}}",quote(h))); | |
2274 | if (header_value.character == NULL || header_def == NULL) | |
2275 | { | |
2276 | filter->errmsg=CUS "header string expansion failed"; | |
2277 | return -1; | |
2278 | } | |
2279 | for (k=key; k->length!=-1; ++k) | |
2280 | { | |
2281 | if (Ustrcmp(header_def,"true")==0) | |
2282 | { | |
2283 | *cond=compare(filter,k,&header_value,comparator,matchType); | |
2284 | if (*cond==-1) return -1; | |
2285 | if (*cond) break; | |
2286 | } | |
2287 | } | |
2288 | } | |
2289 | } | |
2290 | return 1; | |
2291 | } | |
2292 | else if (parse_identifier(filter,CUS "not")) | |
2293 | { | |
2294 | if (parse_white(filter)==-1) return -1; | |
2295 | switch (parse_test(filter,cond,exec)) | |
2296 | { | |
2297 | case -1: return -1; | |
2298 | case 0: filter->errmsg=CUS "missing test"; return -1; | |
2299 | default: *cond=!*cond; return 1; | |
2300 | } | |
2301 | } | |
2302 | else if (parse_identifier(filter,CUS "size")) | |
2303 | { | |
2304 | /* | |
2305 | relop = ":over" / ":under" | |
2306 | size-test = "size" relop <limit: number> | |
2307 | */ | |
2308 | ||
2309 | unsigned long limit; | |
2310 | int overNotUnder; | |
2311 | ||
2312 | if (parse_white(filter)==-1) return -1; | |
2313 | if (parse_identifier(filter,CUS ":over")) overNotUnder=1; | |
2314 | else if (parse_identifier(filter,CUS ":under")) overNotUnder=0; | |
2315 | else | |
2316 | { | |
2317 | filter->errmsg=CUS "missing :over or :under"; | |
2318 | return -1; | |
2319 | } | |
2320 | if (parse_white(filter)==-1) return -1; | |
2321 | if (parse_number(filter,&limit)==-1) return -1; | |
2322 | *cond=(overNotUnder ? (message_size>limit) : (message_size<limit)); | |
2323 | return 1; | |
2324 | } | |
2325 | else if (parse_identifier(filter,CUS "true")) | |
2326 | { | |
2327 | *cond=1; | |
2328 | return 1; | |
2329 | } | |
2330 | else if (parse_identifier(filter,CUS "envelope")) | |
2331 | { | |
2332 | /* | |
2333 | envelope-test = "envelope" { [comparator] [address-part] [match-type] } | |
2334 | <envelope-part: string-list> <key-list: string-list> | |
2335 | ||
2336 | envelope-part is case insensitive "from" or "to" | |
024bd3c2 PH |
2337 | #ifdef ENVELOPE_AUTH |
2338 | envelope-part =/ "auth" | |
2339 | #endif | |
059ec3d9 PH |
2340 | */ |
2341 | ||
5ea81592 | 2342 | enum Comparator comparator=COMP_EN_ASCII_CASEMAP; |
059ec3d9 PH |
2343 | enum AddressPart addressPart=ADDRPART_ALL; |
2344 | enum MatchType matchType=MATCH_IS; | |
2345 | struct String *env,*e,*key,*k; | |
2346 | int m; | |
2347 | int co=0,ap=0,mt=0; | |
2348 | ||
2349 | if (!filter->require_envelope) | |
2350 | { | |
2351 | filter->errmsg=CUS "missing previous require \"envelope\";"; | |
2352 | return -1; | |
2353 | } | |
2354 | for (;;) | |
2355 | { | |
2356 | if (parse_white(filter)==-1) return -1; | |
2357 | if ((m=parse_comparator(filter,&comparator))!=0) | |
2358 | { | |
2359 | if (m==-1) return -1; | |
2360 | if (co) | |
2361 | { | |
2362 | filter->errmsg=CUS "comparator already specified"; | |
2363 | return -1; | |
2364 | } | |
2365 | else co=1; | |
2366 | } | |
2367 | else if ((m=parse_addresspart(filter,&addressPart))!=0) | |
2368 | { | |
2369 | if (m==-1) return -1; | |
2370 | if (ap) | |
2371 | { | |
2372 | filter->errmsg=CUS "address part already specified"; | |
2373 | return -1; | |
2374 | } | |
2375 | else ap=1; | |
2376 | } | |
2377 | else if ((m=parse_matchtype(filter,&matchType))!=0) | |
2378 | { | |
2379 | if (m==-1) return -1; | |
2380 | if (mt) | |
2381 | { | |
2382 | filter->errmsg=CUS "match type already specified"; | |
2383 | return -1; | |
2384 | } | |
2385 | else mt=1; | |
2386 | } | |
2387 | else break; | |
2388 | } | |
2389 | if (parse_white(filter)==-1) return -1; | |
2390 | if ((m=parse_stringlist(filter,&env))!=1) | |
2391 | { | |
2392 | if (m==0) filter->errmsg=CUS "envelope string list expected"; | |
2393 | return -1; | |
2394 | } | |
2395 | if (parse_white(filter)==-1) return -1; | |
2396 | if ((m=parse_stringlist(filter,&key))!=1) | |
2397 | { | |
2398 | if (m==0) filter->errmsg=CUS "key string list expected"; | |
2399 | return -1; | |
2400 | } | |
2401 | *cond=0; | |
87fcc8b9 | 2402 | for (e=env; e->length!=-1 && !*cond; ++e) |
059ec3d9 PH |
2403 | { |
2404 | const uschar *envelopeExpr=CUS 0; | |
2405 | uschar *envelope=US 0; | |
2406 | ||
2407 | if (eq_asciicase(e,&str_from,0)) | |
2408 | { | |
2409 | switch (addressPart) | |
2410 | { | |
2411 | case ADDRPART_ALL: envelopeExpr=CUS "$sender_address"; break; | |
2412 | #ifdef SUBADDRESS | |
2413 | case ADDRPART_USER: | |
2414 | #endif | |
2415 | case ADDRPART_LOCALPART: envelopeExpr=CUS "${local_part:$sender_address}"; break; | |
2416 | case ADDRPART_DOMAIN: envelopeExpr=CUS "${domain:$sender_address}"; break; | |
2417 | #ifdef SUBADDRESS | |
e4a89c47 | 2418 | case ADDRPART_DETAIL: envelopeExpr=CUS 0; break; |
059ec3d9 PH |
2419 | #endif |
2420 | } | |
2421 | } | |
2422 | else if (eq_asciicase(e,&str_to,0)) | |
2423 | { | |
2424 | switch (addressPart) | |
2425 | { | |
2426 | case ADDRPART_ALL: envelopeExpr=CUS "$local_part_prefix$local_part$local_part_suffix@$domain"; break; | |
2427 | #ifdef SUBADDRESS | |
e4a89c47 PH |
2428 | case ADDRPART_USER: envelopeExpr=filter->useraddress; break; |
2429 | case ADDRPART_DETAIL: envelopeExpr=filter->subaddress; break; | |
059ec3d9 PH |
2430 | #endif |
2431 | case ADDRPART_LOCALPART: envelopeExpr=CUS "$local_part_prefix$local_part$local_part_suffix"; break; | |
2432 | case ADDRPART_DOMAIN: envelopeExpr=CUS "$domain"; break; | |
2433 | } | |
2434 | } | |
024bd3c2 PH |
2435 | #ifdef ENVELOPE_AUTH |
2436 | else if (eq_asciicase(e,&str_auth,0)) | |
2437 | { | |
2438 | switch (addressPart) | |
2439 | { | |
2440 | case ADDRPART_ALL: envelopeExpr=CUS "$authenticated_sender"; break; | |
2441 | #ifdef SUBADDRESS | |
2442 | case ADDRPART_USER: | |
2443 | #endif | |
2444 | case ADDRPART_LOCALPART: envelopeExpr=CUS "${local_part:$authenticated_sender}"; break; | |
2445 | case ADDRPART_DOMAIN: envelopeExpr=CUS "${domain:$authenticated_sender}"; break; | |
2446 | #ifdef SUBADDRESS | |
2447 | case ADDRPART_DETAIL: envelopeExpr=CUS 0; break; | |
2448 | #endif | |
2449 | } | |
2450 | } | |
2451 | #endif | |
059ec3d9 PH |
2452 | else |
2453 | { | |
2454 | filter->errmsg=CUS "invalid envelope string"; | |
2455 | return -1; | |
2456 | } | |
2457 | if (exec && envelopeExpr) | |
2458 | { | |
2459 | if ((envelope=expand_string(US envelopeExpr)) == NULL) | |
2460 | { | |
2461 | filter->errmsg=CUS "header string expansion failed"; | |
2462 | return -1; | |
2463 | } | |
2464 | for (k=key; k->length!=-1; ++k) | |
2465 | { | |
2466 | struct String envelopeStr; | |
2467 | ||
2468 | envelopeStr.character=envelope; | |
2469 | envelopeStr.length=Ustrlen(envelope); | |
7fe1560f | 2470 | *cond=compare(filter,k,&envelopeStr,comparator,matchType); |
059ec3d9 PH |
2471 | if (*cond==-1) return -1; |
2472 | if (*cond) break; | |
2473 | } | |
2474 | } | |
2475 | } | |
2476 | return 1; | |
2477 | } | |
7c5214ec PH |
2478 | #ifdef ENOTIFY |
2479 | else if (parse_identifier(filter,CUS "valid_notif_method")) | |
2480 | { | |
2481 | /* | |
2482 | valid_notif_method = "valid_notif_method" | |
2483 | <notification-uris: string-list> | |
2484 | */ | |
2485 | ||
2486 | struct String *uris,*u; | |
2487 | int m; | |
2488 | ||
2489 | if (!filter->require_enotify) | |
2490 | { | |
2491 | filter->errmsg=CUS "missing previous require \"enotify\";"; | |
2492 | return -1; | |
2493 | } | |
2494 | if (parse_white(filter)==-1) return -1; | |
2495 | if ((m=parse_stringlist(filter,&uris))!=1) | |
2496 | { | |
2497 | if (m==0) filter->errmsg=CUS "URI string list expected"; | |
2498 | return -1; | |
2499 | } | |
2500 | if (exec) | |
2501 | { | |
2502 | *cond=1; | |
2503 | for (u=uris; u->length!=-1 && *cond; ++u) | |
2504 | { | |
2505 | string_item *recipient; | |
2506 | struct String header,body; | |
2507 | ||
2508 | recipient=NULL; | |
2509 | header.length=-1; | |
2510 | header.character=(uschar*)0; | |
2511 | body.length=-1; | |
2512 | body.character=(uschar*)0; | |
2513 | if (parse_mailto_uri(filter,u->character,&recipient,&header,&body)!=1) | |
2514 | *cond=0; | |
2515 | } | |
2516 | } | |
2517 | return 1; | |
2518 | } | |
2519 | #endif | |
059ec3d9 PH |
2520 | else return 0; |
2521 | } | |
2522 | ||
2523 | ||
2524 | /************************************************* | |
2525 | * Parse and interpret an optional block * | |
2526 | *************************************************/ | |
2527 | ||
2528 | /* | |
2529 | Arguments: | |
2530 | filter points to the Sieve filter including its state | |
2531 | exec Execute parsed statements | |
2532 | generated where to hang newly-generated addresses | |
2533 | ||
2534 | Returns: 2 success by stop | |
2535 | 1 other success | |
2536 | 0 no block command found | |
2537 | -1 syntax or execution error | |
2538 | */ | |
2539 | ||
2540 | static int parse_block(struct Sieve *filter, int exec, | |
2541 | address_item **generated) | |
2542 | { | |
2543 | int r; | |
2544 | ||
2545 | if (parse_white(filter)==-1) return -1; | |
2546 | if (*filter->pc=='{') | |
2547 | { | |
2548 | ++filter->pc; | |
2549 | if ((r=parse_commands(filter,exec,generated))==-1 || r==2) return r; | |
2550 | if (*filter->pc=='}') | |
2551 | { | |
2552 | ++filter->pc; | |
2553 | return 1; | |
2554 | } | |
2555 | else | |
2556 | { | |
8e669ac1 | 2557 | filter->errmsg=CUS "expecting command or closing brace"; |
059ec3d9 PH |
2558 | return -1; |
2559 | } | |
2560 | } | |
2561 | else return 0; | |
2562 | } | |
2563 | ||
2564 | ||
2565 | /************************************************* | |
2566 | * Match a semicolon * | |
2567 | *************************************************/ | |
2568 | ||
2569 | /* | |
2570 | Arguments: | |
2571 | filter points to the Sieve filter including its state | |
2572 | ||
2573 | Returns: 1 success | |
2574 | -1 syntax error | |
2575 | */ | |
2576 | ||
2577 | static int parse_semicolon(struct Sieve *filter) | |
2578 | { | |
2579 | if (parse_white(filter)==-1) return -1; | |
2580 | if (*filter->pc==';') | |
2581 | { | |
2582 | ++filter->pc; | |
2583 | return 1; | |
2584 | } | |
2585 | else | |
2586 | { | |
2587 | filter->errmsg=CUS "missing semicolon"; | |
2588 | return -1; | |
2589 | } | |
2590 | } | |
2591 | ||
2592 | ||
2593 | /************************************************* | |
2594 | * Parse and interpret a Sieve command * | |
2595 | *************************************************/ | |
2596 | ||
2597 | /* | |
2598 | Arguments: | |
2599 | filter points to the Sieve filter including its state | |
2600 | exec Execute parsed statements | |
2601 | generated where to hang newly-generated addresses | |
2602 | ||
2603 | Returns: 2 success by stop | |
2604 | 1 other success | |
2605 | -1 syntax or execution error | |
2606 | */ | |
2607 | static int parse_commands(struct Sieve *filter, int exec, | |
2608 | address_item **generated) | |
2609 | { | |
2610 | while (*filter->pc) | |
2611 | { | |
2612 | if (parse_white(filter)==-1) return -1; | |
2613 | if (parse_identifier(filter,CUS "if")) | |
2614 | { | |
2615 | /* | |
2616 | if-command = "if" test block *( "elsif" test block ) [ else block ] | |
2617 | */ | |
2618 | ||
2619 | int cond,m,unsuccessful; | |
2620 | ||
2621 | /* test block */ | |
2622 | if (parse_white(filter)==-1) return -1; | |
2623 | if ((m=parse_test(filter,&cond,exec))==-1) return -1; | |
2624 | if (m==0) | |
2625 | { | |
2626 | filter->errmsg=CUS "missing test"; | |
2627 | return -1; | |
2628 | } | |
87fcc8b9 PH |
2629 | if ((filter_test != FTEST_NONE && debug_selector != 0) || |
2630 | (debug_selector & D_filter) != 0) | |
2631 | { | |
2632 | if (exec) debug_printf("if %s\n",cond?"true":"false"); | |
2633 | } | |
059ec3d9 PH |
2634 | m=parse_block(filter,exec ? cond : 0, generated); |
2635 | if (m==-1 || m==2) return m; | |
2636 | if (m==0) | |
2637 | { | |
2638 | filter->errmsg=CUS "missing block"; | |
2639 | return -1; | |
2640 | } | |
2641 | unsuccessful = !cond; | |
2642 | for (;;) /* elsif test block */ | |
2643 | { | |
2644 | if (parse_white(filter)==-1) return -1; | |
2645 | if (parse_identifier(filter,CUS "elsif")) | |
2646 | { | |
2647 | if (parse_white(filter)==-1) return -1; | |
2648 | m=parse_test(filter,&cond,exec && unsuccessful); | |
2649 | if (m==-1 || m==2) return m; | |
2650 | if (m==0) | |
2651 | { | |
2652 | filter->errmsg=CUS "missing test"; | |
2653 | return -1; | |
2654 | } | |
87fcc8b9 PH |
2655 | if ((filter_test != FTEST_NONE && debug_selector != 0) || |
2656 | (debug_selector & D_filter) != 0) | |
2657 | { | |
2658 | if (exec) debug_printf("elsif %s\n",cond?"true":"false"); | |
2659 | } | |
059ec3d9 PH |
2660 | m=parse_block(filter,exec && unsuccessful ? cond : 0, generated); |
2661 | if (m==-1 || m==2) return m; | |
2662 | if (m==0) | |
2663 | { | |
2664 | filter->errmsg=CUS "missing block"; | |
2665 | return -1; | |
2666 | } | |
2667 | if (exec && unsuccessful && cond) unsuccessful = 0; | |
2668 | } | |
2669 | else break; | |
2670 | } | |
2671 | /* else block */ | |
2672 | if (parse_white(filter)==-1) return -1; | |
2673 | if (parse_identifier(filter,CUS "else")) | |
2674 | { | |
2675 | m=parse_block(filter,exec && unsuccessful, generated); | |
2676 | if (m==-1 || m==2) return m; | |
2677 | if (m==0) | |
2678 | { | |
2679 | filter->errmsg=CUS "missing block"; | |
2680 | return -1; | |
2681 | } | |
2682 | } | |
2683 | } | |
2684 | else if (parse_identifier(filter,CUS "stop")) | |
2685 | { | |
2686 | /* | |
2687 | stop-command = "stop" { stop-options } ";" | |
2688 | stop-options = | |
2689 | */ | |
2690 | ||
2691 | if (parse_semicolon(filter)==-1) return -1; | |
2692 | if (exec) | |
2693 | { | |
2694 | filter->pc+=Ustrlen(filter->pc); | |
2695 | return 2; | |
2696 | } | |
2697 | } | |
2698 | else if (parse_identifier(filter,CUS "keep")) | |
2699 | { | |
2700 | /* | |
2701 | keep-command = "keep" { keep-options } ";" | |
2702 | keep-options = | |
2703 | */ | |
2704 | ||
2705 | if (parse_semicolon(filter)==-1) return -1; | |
2706 | if (exec) | |
2707 | { | |
2708 | add_addr(generated,US"inbox",1,0,0,0); | |
2709 | filter->keep = 0; | |
2710 | } | |
2711 | } | |
2712 | else if (parse_identifier(filter,CUS "discard")) | |
2713 | { | |
2714 | /* | |
2715 | discard-command = "discard" { discard-options } ";" | |
2716 | discard-options = | |
2717 | */ | |
2718 | ||
2719 | if (parse_semicolon(filter)==-1) return -1; | |
2720 | if (exec) filter->keep=0; | |
2721 | } | |
2722 | else if (parse_identifier(filter,CUS "redirect")) | |
2723 | { | |
2724 | /* | |
2725 | redirect-command = "redirect" redirect-options "string" ";" | |
2726 | redirect-options = | |
2727 | redirect-options =) ":copy" | |
2728 | */ | |
2729 | ||
2730 | struct String recipient; | |
2731 | int m; | |
2732 | int copy=0; | |
2733 | ||
2734 | for (;;) | |
2735 | { | |
2736 | if (parse_white(filter)==-1) return -1; | |
2737 | if (parse_identifier(filter,CUS ":copy")==1) | |
2738 | { | |
2739 | if (!filter->require_copy) | |
2740 | { | |
2741 | filter->errmsg=CUS "missing previous require \"copy\";"; | |
2742 | return -1; | |
2743 | } | |
2744 | copy=1; | |
2745 | } | |
2746 | else break; | |
2747 | } | |
2748 | if (parse_white(filter)==-1) return -1; | |
2749 | if ((m=parse_string(filter,&recipient))!=1) | |
2750 | { | |
2751 | if (m==0) filter->errmsg=CUS "missing redirect recipient string"; | |
2752 | return -1; | |
2753 | } | |
2754 | if (strchr(CCS recipient.character,'@')==(char*)0) | |
2755 | { | |
2756 | filter->errmsg=CUS "unqualified recipient address"; | |
2757 | return -1; | |
2758 | } | |
2759 | if (exec) | |
2760 | { | |
2761 | add_addr(generated,recipient.character,0,0,0,0); | |
2762 | if (!copy) filter->keep = 0; | |
2763 | } | |
2764 | if (parse_semicolon(filter)==-1) return -1; | |
2765 | } | |
2766 | else if (parse_identifier(filter,CUS "fileinto")) | |
2767 | { | |
2768 | /* | |
2769 | fileinto-command = "fileinto" { fileinto-options } string ";" | |
2770 | fileinto-options = | |
2771 | fileinto-options =) [ ":copy" ] | |
87fcc8b9 | 2772 | */ |
059ec3d9 PH |
2773 | |
2774 | struct String folder; | |
2775 | uschar *s; | |
2776 | int m; | |
2777 | unsigned long maxage, maxmessages, maxstorage; | |
2778 | int copy=0; | |
2779 | ||
2780 | maxage = maxmessages = maxstorage = 0; | |
2781 | if (!filter->require_fileinto) | |
2782 | { | |
2783 | filter->errmsg=CUS "missing previous require \"fileinto\";"; | |
2784 | return -1; | |
2785 | } | |
2786 | for (;;) | |
2787 | { | |
2788 | if (parse_white(filter)==-1) return -1; | |
2789 | if (parse_identifier(filter,CUS ":copy")==1) | |
2790 | { | |
2791 | if (!filter->require_copy) | |
2792 | { | |
2793 | filter->errmsg=CUS "missing previous require \"copy\";"; | |
2794 | return -1; | |
2795 | } | |
2796 | copy=1; | |
2797 | } | |
2798 | else break; | |
2799 | } | |
2800 | if (parse_white(filter)==-1) return -1; | |
2801 | if ((m=parse_string(filter,&folder))!=1) | |
2802 | { | |
2803 | if (m==0) filter->errmsg=CUS "missing fileinto folder string"; | |
2804 | return -1; | |
2805 | } | |
2806 | m=0; s=folder.character; | |
2807 | if (folder.length==0) m=1; | |
2808 | if (Ustrcmp(s,"..")==0 || Ustrncmp(s,"../",3)==0) m=1; | |
2809 | else while (*s) | |
2810 | { | |
2811 | if (Ustrcmp(s,"/..")==0 || Ustrncmp(s,"/../",4)==0) { m=1; break; } | |
2812 | ++s; | |
2813 | } | |
2814 | if (m) | |
2815 | { | |
2816 | filter->errmsg=CUS "invalid folder"; | |
2817 | return -1; | |
2818 | } | |
2819 | if (exec) | |
2820 | { | |
2821 | add_addr(generated, folder.character, 1, maxage, maxmessages, maxstorage); | |
2822 | if (!copy) filter->keep = 0; | |
2823 | } | |
2824 | if (parse_semicolon(filter)==-1) return -1; | |
2825 | } | |
7c5214ec | 2826 | #ifdef ENOTIFY |
87fcc8b9 PH |
2827 | else if (parse_identifier(filter,CUS "notify")) |
2828 | { | |
2829 | /* | |
7c5214ec PH |
2830 | notify-command = "notify" { notify-options } <method: string> ";" |
2831 | notify-options = [":from" string] | |
2832 | [":importance" <"1" / "2" / "3">] | |
2833 | [":options" 1*(string-list / number)] | |
87fcc8b9 PH |
2834 | [":message" string] |
2835 | */ | |
2836 | ||
2837 | int m; | |
7c5214ec PH |
2838 | struct String from; |
2839 | struct String importance; | |
2840 | struct String *options; | |
87fcc8b9 | 2841 | struct String message; |
7c5214ec | 2842 | struct String method; |
50c99ba6 PH |
2843 | struct Notification *already; |
2844 | string_item *recipient; | |
7c5214ec | 2845 | struct String header; |
50c99ba6 PH |
2846 | struct String body; |
2847 | uschar *envelope_from,*envelope_to; | |
87fcc8b9 | 2848 | |
7c5214ec | 2849 | if (!filter->require_enotify) |
87fcc8b9 | 2850 | { |
7c5214ec | 2851 | filter->errmsg=CUS "missing previous require \"enotify\";"; |
87fcc8b9 PH |
2852 | return -1; |
2853 | } | |
7c5214ec PH |
2854 | from.character=(uschar*)0; |
2855 | from.length=-1; | |
2856 | importance.character=(uschar*)0; | |
2857 | importance.length=-1; | |
2858 | options=(struct String*)0; | |
87fcc8b9 PH |
2859 | message.character=(uschar*)0; |
2860 | message.length=-1; | |
50c99ba6 | 2861 | recipient=NULL; |
7c5214ec PH |
2862 | header.length=-1; |
2863 | header.character=(uschar*)0; | |
50c99ba6 PH |
2864 | body.length=-1; |
2865 | body.character=(uschar*)0; | |
2866 | envelope_from=expand_string("$sender_address"); | |
2867 | envelope_to=expand_string("$local_part_prefix$local_part$local_part_suffix@$domain"); | |
87fcc8b9 PH |
2868 | for (;;) |
2869 | { | |
2870 | if (parse_white(filter)==-1) return -1; | |
7c5214ec | 2871 | if (parse_identifier(filter,CUS ":from")==1) |
87fcc8b9 PH |
2872 | { |
2873 | if (parse_white(filter)==-1) return -1; | |
7c5214ec | 2874 | if ((m=parse_string(filter,&from))!=1) |
87fcc8b9 | 2875 | { |
7c5214ec | 2876 | if (m==0) filter->errmsg=CUS "from string expected"; |
87fcc8b9 PH |
2877 | return -1; |
2878 | } | |
50c99ba6 | 2879 | } |
7c5214ec | 2880 | else if (parse_identifier(filter,CUS ":importance")==1) |
50c99ba6 PH |
2881 | { |
2882 | if (parse_white(filter)==-1) return -1; | |
7c5214ec | 2883 | if ((m=parse_string(filter,&importance))!=1) |
50c99ba6 | 2884 | { |
7c5214ec PH |
2885 | if (m==0) filter->errmsg=CUS "importance string expected"; |
2886 | return -1; | |
2887 | } | |
2888 | if (importance.length!=1 || importance.character[0]<'1' || importance.character[0]>'3') | |
2889 | { | |
2890 | filter->errmsg=CUS "invalid importance"; | |
50c99ba6 PH |
2891 | return -1; |
2892 | } | |
87fcc8b9 | 2893 | } |
7c5214ec PH |
2894 | else if (parse_identifier(filter,CUS ":options")==1) |
2895 | { | |
2896 | if (parse_white(filter)==-1) return -1; | |
2897 | } | |
87fcc8b9 PH |
2898 | else if (parse_identifier(filter,CUS ":message")==1) |
2899 | { | |
2900 | if (parse_white(filter)==-1) return -1; | |
2901 | if ((m=parse_string(filter,&message))!=1) | |
2902 | { | |
2903 | if (m==0) filter->errmsg=CUS "message string expected"; | |
2904 | return -1; | |
2905 | } | |
2906 | } | |
2907 | else break; | |
2908 | } | |
7c5214ec PH |
2909 | if (parse_white(filter)==-1) return -1; |
2910 | if ((m=parse_string(filter,&method))!=1) | |
2911 | { | |
2912 | if (m==0) filter->errmsg=CUS "missing method string"; | |
2913 | return -1; | |
2914 | } | |
87fcc8b9 | 2915 | if (parse_semicolon(filter)==-1) return -1; |
50c99ba6 | 2916 | |
7c5214ec | 2917 | for (already=filter->notified; already; already=already->next) |
50c99ba6 | 2918 | { |
7c5214ec PH |
2919 | if (already->method.length==method.length |
2920 | && (method.length==-1 || strcmp(already->method.character,method.character)==0) | |
2921 | && already->importance.length==importance.length | |
2922 | && (importance.length==-1 || strcmp(already->importance.character,importance.character)==0) | |
2923 | && already->message.length==message.length | |
2924 | && (message.length==-1 || strcmp(already->message.character,message.character)==0)) | |
2925 | break; | |
50c99ba6 | 2926 | } |
7c5214ec PH |
2927 | if (already==(struct Notification*)0) |
2928 | /* New notification, process it */ | |
50c99ba6 | 2929 | { |
7c5214ec PH |
2930 | if (parse_mailto_uri(filter,method.character,&recipient,&header,&body)!=1) |
2931 | return -1; | |
2932 | struct Notification *sent; | |
2933 | sent=store_get(sizeof(struct Notification)); | |
2934 | sent->method=method; | |
2935 | sent->importance=importance; | |
2936 | sent->message=message; | |
2937 | sent->next=filter->notified; | |
2938 | filter->notified=sent; | |
2939 | if ((filter_test != FTEST_NONE && debug_selector != 0) || (debug_selector & D_filter) != 0) | |
50c99ba6 | 2940 | { |
7c5214ec | 2941 | debug_printf("Notification to `%s'.\n",method.character); |
50c99ba6 | 2942 | } |
bfad5236 | 2943 | #ifndef COMPILE_SYNTAX_CHECKER |
d2ee6114 | 2944 | if (exec && filter_test == FTEST_NONE) |
7c5214ec PH |
2945 | { |
2946 | string_item *p; | |
2947 | header_line *h; | |
2948 | int pid,fd; | |
50c99ba6 | 2949 | |
7c5214ec PH |
2950 | if ((pid = child_open_exim2(&fd,envelope_to,envelope_to))>=1) |
2951 | { | |
2952 | FILE *f; | |
d2ee6114 PH |
2953 | uschar *buffer; |
2954 | int buffer_capacity; | |
7c5214ec PH |
2955 | |
2956 | f = fdopen(fd, "wb"); | |
2957 | for (h = header_list; h != NULL; h = h->next) | |
2958 | if (h->type == htype_received) fprintf(f,"%s",h->text); | |
2959 | fprintf(f,"From: %s\n",from.length==-1 ? envelope_to : from.character); | |
2960 | for (p=recipient; p; p=p->next) fprintf(f,"To: %s\n",p->text); | |
2961 | if (header.length>0) fprintf(f,"%s",header.character); | |
d2ee6114 PH |
2962 | if (message.length==-1) |
2963 | { | |
2964 | message.character=US"Notification"; | |
2965 | message.length=Ustrlen(message.character); | |
2966 | } | |
2967 | /* Allocation is larger than neccessary, but enough even for split MIME words */ | |
2968 | buffer_capacity=32+4*message.length; | |
2969 | buffer=store_get(buffer_capacity); | |
2970 | fprintf(f,"Subject: %s\n\n",parse_quote_2047(message.character, message.length, US"utf-8", buffer, buffer_capacity, TRUE)); | |
7c5214ec PH |
2971 | if (body.length>0) fprintf(f,"%s\n",body.character); |
2972 | fflush(f); | |
2973 | (void)fclose(f); | |
2974 | (void)child_close(pid, 0); | |
50c99ba6 PH |
2975 | } |
2976 | } | |
7c5214ec PH |
2977 | #endif |
2978 | } | |
2979 | else | |
2980 | { | |
2981 | if ((filter_test != FTEST_NONE && debug_selector != 0) || (debug_selector & D_filter) != 0) | |
50c99ba6 | 2982 | { |
7c5214ec | 2983 | debug_printf("Repeated notification to `%s' ignored.\n",method.character); |
50c99ba6 PH |
2984 | } |
2985 | } | |
87fcc8b9 PH |
2986 | } |
2987 | #endif | |
059ec3d9 PH |
2988 | #ifdef VACATION |
2989 | else if (parse_identifier(filter,CUS "vacation")) | |
2990 | { | |
2991 | /* | |
2992 | vacation-command = "vacation" { vacation-options } <reason: string> ";" | |
2993 | vacation-options = [":days" number] | |
059ec3d9 | 2994 | [":subject" string] |
f656d135 PH |
2995 | [":from" string] |
2996 | [":addresses" string-list] | |
059ec3d9 | 2997 | [":mime"] |
f656d135 | 2998 | [":handle" string] |
059ec3d9 PH |
2999 | */ |
3000 | ||
3001 | int m; | |
3002 | unsigned long days; | |
059ec3d9 | 3003 | struct String subject; |
f656d135 PH |
3004 | struct String from; |
3005 | struct String *addresses; | |
059ec3d9 PH |
3006 | int reason_is_mime; |
3007 | string_item *aliases; | |
f656d135 | 3008 | struct String handle; |
059ec3d9 PH |
3009 | struct String reason; |
3010 | ||
3011 | if (!filter->require_vacation) | |
3012 | { | |
3013 | filter->errmsg=CUS "missing previous require \"vacation\";"; | |
3014 | return -1; | |
3015 | } | |
3016 | if (exec) | |
3017 | { | |
3018 | if (filter->vacation_ran) | |
3019 | { | |
3020 | filter->errmsg=CUS "trying to execute vacation more than once"; | |
3021 | return -1; | |
3022 | } | |
3023 | filter->vacation_ran=1; | |
3024 | } | |
3025 | days=VACATION_MIN_DAYS>7 ? VACATION_MIN_DAYS : 7; | |
3026 | subject.character=(uschar*)0; | |
3027 | subject.length=-1; | |
f656d135 PH |
3028 | from.character=(uschar*)0; |
3029 | from.length=-1; | |
3030 | addresses=(struct String*)0; | |
059ec3d9 PH |
3031 | aliases=NULL; |
3032 | reason_is_mime=0; | |
f656d135 PH |
3033 | handle.character=(uschar*)0; |
3034 | handle.length=-1; | |
059ec3d9 PH |
3035 | for (;;) |
3036 | { | |
3037 | if (parse_white(filter)==-1) return -1; | |
3038 | if (parse_identifier(filter,CUS ":days")==1) | |
3039 | { | |
3040 | if (parse_white(filter)==-1) return -1; | |
3041 | if (parse_number(filter,&days)==-1) return -1; | |
3042 | if (days<VACATION_MIN_DAYS) days=VACATION_MIN_DAYS; | |
3043 | else if (days>VACATION_MAX_DAYS) days=VACATION_MAX_DAYS; | |
3044 | } | |
f656d135 PH |
3045 | else if (parse_identifier(filter,CUS ":subject")==1) |
3046 | { | |
3047 | if (parse_white(filter)==-1) return -1; | |
3048 | if ((m=parse_string(filter,&subject))!=1) | |
3049 | { | |
3050 | if (m==0) filter->errmsg=CUS "subject string expected"; | |
3051 | return -1; | |
3052 | } | |
3053 | } | |
3054 | else if (parse_identifier(filter,CUS ":from")==1) | |
3055 | { | |
f656d135 PH |
3056 | if (parse_white(filter)==-1) return -1; |
3057 | if ((m=parse_string(filter,&from))!=1) | |
3058 | { | |
3059 | if (m==0) filter->errmsg=CUS "from string expected"; | |
3060 | return -1; | |
3061 | } | |
7c5214ec | 3062 | if (check_mail_address(filter,&from)!=1) |
f656d135 | 3063 | return -1; |
f656d135 | 3064 | } |
059ec3d9 PH |
3065 | else if (parse_identifier(filter,CUS ":addresses")==1) |
3066 | { | |
3067 | struct String *a; | |
3068 | ||
3069 | if (parse_white(filter)==-1) return -1; | |
3070 | if ((m=parse_stringlist(filter,&addresses))!=1) | |
3071 | { | |
3072 | if (m==0) filter->errmsg=CUS "addresses string list expected"; | |
3073 | return -1; | |
3074 | } | |
3075 | for (a=addresses; a->length!=-1; ++a) | |
3076 | { | |
3077 | string_item *new; | |
3078 | ||
3079 | new=store_get(sizeof(string_item)); | |
3080 | new->text=store_get(a->length+1); | |
3081 | if (a->length) memcpy(new->text,a->character,a->length); | |
3082 | new->text[a->length]='\0'; | |
3083 | new->next=aliases; | |
3084 | aliases=new; | |
3085 | } | |
3086 | } | |
f656d135 PH |
3087 | else if (parse_identifier(filter,CUS ":mime")==1) |
3088 | reason_is_mime=1; | |
3089 | else if (parse_identifier(filter,CUS ":handle")==1) | |
059ec3d9 PH |
3090 | { |
3091 | if (parse_white(filter)==-1) return -1; | |
f656d135 | 3092 | if ((m=parse_string(filter,&from))!=1) |
059ec3d9 | 3093 | { |
f656d135 | 3094 | if (m==0) filter->errmsg=CUS "handle string expected"; |
059ec3d9 PH |
3095 | return -1; |
3096 | } | |
3097 | } | |
059ec3d9 PH |
3098 | else break; |
3099 | } | |
3100 | if (parse_white(filter)==-1) return -1; | |
3101 | if ((m=parse_string(filter,&reason))!=1) | |
3102 | { | |
3103 | if (m==0) filter->errmsg=CUS "missing reason string"; | |
3104 | return -1; | |
3105 | } | |
5ea81592 PH |
3106 | if (reason_is_mime) |
3107 | { | |
3108 | uschar *s,*end; | |
3109 | ||
3110 | for (s=reason.character,end=reason.character+reason.length; s<end && (*s&0x80)==0; ++s); | |
3111 | if (s<end) | |
3112 | { | |
3113 | filter->errmsg=CUS "MIME reason string contains 8bit text"; | |
3114 | return -1; | |
3115 | } | |
3116 | } | |
059ec3d9 PH |
3117 | if (parse_semicolon(filter)==-1) return -1; |
3118 | ||
3119 | if (exec) | |
3120 | { | |
3121 | address_item *addr; | |
3122 | int capacity,start; | |
3123 | uschar *buffer; | |
3124 | int buffer_capacity; | |
3125 | struct String key; | |
3126 | md5 base; | |
3127 | uschar digest[16]; | |
3128 | uschar hexdigest[33]; | |
3129 | int i; | |
3130 | uschar *once; | |
3131 | ||
3132 | if (filter_personal(aliases,TRUE)) | |
3133 | { | |
4929acf0 PH |
3134 | if (filter_test == FTEST_NONE) |
3135 | { | |
3136 | /* ensure oncelog directory exists; failure will be detected later */ | |
059ec3d9 | 3137 | |
4929acf0 PH |
3138 | (void)directory_make(NULL, filter->vacation_directory, 0700, FALSE); |
3139 | } | |
059ec3d9 PH |
3140 | /* build oncelog filename */ |
3141 | ||
3142 | key.character=(uschar*)0; | |
3143 | key.length=0; | |
3144 | capacity=0; | |
f656d135 | 3145 | if (handle.length==-1) |
8e669ac1 | 3146 | { |
f656d135 PH |
3147 | if (subject.length!=-1) key.character=string_cat(key.character,&capacity,&key.length,subject.character,subject.length); |
3148 | if (from.length!=-1) key.character=string_cat(key.character,&capacity,&key.length,from.character,from.length); | |
3149 | key.character=string_cat(key.character,&capacity,&key.length,reason_is_mime?US"1":US"0",1); | |
3150 | key.character=string_cat(key.character,&capacity,&key.length,reason.character,reason.length); | |
8e669ac1 | 3151 | } |
f656d135 PH |
3152 | else |
3153 | key=handle; | |
059ec3d9 PH |
3154 | md5_start(&base); |
3155 | md5_end(&base, key.character, key.length, digest); | |
3156 | for (i = 0; i < 16; i++) sprintf(CS (hexdigest+2*i), "%02X", digest[i]); | |
50c99ba6 | 3157 | if ((filter_test != FTEST_NONE && debug_selector != 0) || (debug_selector & D_filter) != 0) |
059ec3d9 | 3158 | { |
4929acf0 | 3159 | debug_printf("Sieve: mail was personal, vacation file basename: %s\n", hexdigest); |
059ec3d9 | 3160 | } |
50c99ba6 | 3161 | if (filter_test == FTEST_NONE) |
059ec3d9 | 3162 | { |
4929acf0 PH |
3163 | capacity=Ustrlen(filter->vacation_directory); |
3164 | start=capacity; | |
3165 | once=string_cat(filter->vacation_directory,&capacity,&start,US"/",1); | |
3166 | once=string_cat(once,&capacity,&start,hexdigest,33); | |
3167 | once[start] = '\0'; | |
3168 | ||
3169 | /* process subject */ | |
3170 | ||
3171 | if (subject.length==-1) | |
3172 | { | |
50c99ba6 PH |
3173 | uschar *subject_def; |
3174 | ||
3175 | subject_def=expand_string(US"${if def:header_subject {true}{false}}"); | |
3176 | if (Ustrcmp(subject_def,"true")==0) | |
3177 | { | |
3178 | expand_header(&subject,&str_subject); | |
3179 | capacity=6; | |
3180 | start=6; | |
3181 | subject.character=string_cat(US"Auto: ",&capacity,&start,subject.character,subject.length); | |
3182 | subject.length=start; | |
3183 | } | |
3184 | else | |
3185 | { | |
3186 | subject.character=US"Automated reply"; | |
3187 | subject.length=Ustrlen(subject.character); | |
3188 | } | |
4929acf0 PH |
3189 | } |
3190 | ||
3191 | /* add address to list of generated addresses */ | |
3192 | ||
3193 | addr = deliver_make_addr(string_sprintf(">%.256s", sender_address), FALSE); | |
3194 | setflag(addr, af_pfr); | |
3195 | setflag(addr, af_ignore_error); | |
3196 | addr->next = *generated; | |
3197 | *generated = addr; | |
3198 | addr->reply = store_get(sizeof(reply_item)); | |
3199 | memset(addr->reply,0,sizeof(reply_item)); /* XXX */ | |
3200 | addr->reply->to = string_copy(sender_address); | |
f656d135 PH |
3201 | if (from.length==-1) |
3202 | addr->reply->from = expand_string(US"$local_part@$domain"); | |
3203 | else | |
3204 | addr->reply->from = from.character; | |
4929acf0 | 3205 | /* Allocation is larger than neccessary, but enough even for split MIME words */ |
50c99ba6 | 3206 | buffer_capacity=32+4*subject.length; |
4929acf0 | 3207 | buffer=store_get(buffer_capacity); |
46218253 | 3208 | addr->reply->subject=parse_quote_2047(subject.character, subject.length, US"utf-8", buffer, buffer_capacity, TRUE); |
4929acf0 PH |
3209 | addr->reply->oncelog=once; |
3210 | addr->reply->once_repeat=days*86400; | |
3211 | ||
3212 | /* build body and MIME headers */ | |
3213 | ||
3214 | if (reason_is_mime) | |
3215 | { | |
3216 | uschar *mime_body,*reason_end; | |
4929acf0 | 3217 | static const uschar nlnl[]="\r\n\r\n"; |
059ec3d9 | 3218 | |
4929acf0 PH |
3219 | for |
3220 | ( | |
3221 | mime_body=reason.character,reason_end=reason.character+reason.length; | |
50c99ba6 | 3222 | mime_body<(reason_end-(sizeof(nlnl)-1)) && memcmp(mime_body,nlnl,(sizeof(nlnl)-1)); |
4929acf0 PH |
3223 | ++mime_body |
3224 | ); | |
3225 | capacity = 0; | |
3226 | start = 0; | |
3227 | addr->reply->headers = string_cat(NULL,&capacity,&start,reason.character,mime_body-reason.character); | |
3228 | addr->reply->headers[start] = '\0'; | |
3229 | capacity = 0; | |
3230 | start = 0; | |
50c99ba6 | 3231 | if (mime_body+(sizeof(nlnl)-1)<reason_end) mime_body+=(sizeof(nlnl)-1); |
4929acf0 PH |
3232 | else mime_body=reason_end-1; |
3233 | addr->reply->text = string_cat(NULL,&capacity,&start,mime_body,reason_end-mime_body); | |
3234 | addr->reply->text[start] = '\0'; | |
3235 | } | |
3236 | else | |
3237 | { | |
91ecef39 | 3238 | struct String qp = { NULL, 0 }; /* Keep compiler happy (PH) */ |
4929acf0 PH |
3239 | |
3240 | capacity = 0; | |
3241 | start = reason.length; | |
3242 | addr->reply->headers = US"MIME-Version: 1.0\n" | |
3243 | "Content-Type: text/plain;\n" | |
3244 | "\tcharset=\"utf-8\"\n" | |
3245 | "Content-Transfer-Encoding: quoted-printable"; | |
3246 | addr->reply->text = quoted_printable_encode(&reason,&qp)->character; | |
3247 | } | |
059ec3d9 | 3248 | } |
4929acf0 | 3249 | } |
50c99ba6 | 3250 | else if ((filter_test != FTEST_NONE && debug_selector != 0) || (debug_selector & D_filter) != 0) |
059ec3d9 | 3251 | { |
4929acf0 | 3252 | debug_printf("Sieve: mail was not personal, vacation would ignore it\n"); |
059ec3d9 | 3253 | } |
059ec3d9 PH |
3254 | } |
3255 | } | |
4929acf0 | 3256 | else break; |
059ec3d9 | 3257 | #endif |
059ec3d9 PH |
3258 | } |
3259 | return 1; | |
3260 | } | |
3261 | ||
3262 | ||
3263 | /************************************************* | |
3264 | * Parse and interpret a sieve filter * | |
3265 | *************************************************/ | |
3266 | ||
3267 | /* | |
3268 | Arguments: | |
3269 | filter points to the Sieve filter including its state | |
3270 | exec Execute parsed statements | |
3271 | generated where to hang newly-generated addresses | |
3272 | ||
3273 | Returns: 1 success | |
3274 | -1 syntax or execution error | |
3275 | */ | |
3276 | ||
3277 | static int parse_start(struct Sieve *filter, int exec, | |
3278 | address_item **generated) | |
3279 | { | |
3280 | filter->pc=filter->filter; | |
3281 | filter->line=1; | |
3282 | filter->keep=1; | |
3283 | filter->require_envelope=0; | |
3284 | filter->require_fileinto=0; | |
84024b72 PH |
3285 | #ifdef ENCODED_CHARACTER |
3286 | filter->require_encoded_character=0; | |
3287 | #endif | |
024bd3c2 PH |
3288 | #ifdef ENVELOPE_AUTH |
3289 | filter->require_envelope_auth=0; | |
3290 | #endif | |
7c5214ec PH |
3291 | #ifdef ENOTIFY |
3292 | filter->require_enotify=0; | |
50c99ba6 | 3293 | filter->notified=(struct Notification*)0; |
87fcc8b9 | 3294 | #endif |
059ec3d9 PH |
3295 | #ifdef SUBADDRESS |
3296 | filter->require_subaddress=0; | |
3297 | #endif | |
3298 | #ifdef VACATION | |
3299 | filter->require_vacation=0; | |
3300 | filter->vacation_ran=0; | |
3301 | #endif | |
3302 | filter->require_copy=0; | |
3303 | filter->require_iascii_numeric=0; | |
3304 | ||
3305 | if (parse_white(filter)==-1) return -1; | |
3306 | ||
4929acf0 | 3307 | if (exec && filter->vacation_directory != NULL && filter_test == FTEST_NONE) |
059ec3d9 PH |
3308 | { |
3309 | DIR *oncelogdir; | |
3310 | struct dirent *oncelog; | |
3311 | struct stat properties; | |
3312 | time_t now; | |
3313 | ||
3314 | /* clean up old vacation log databases */ | |
3315 | ||
3316 | oncelogdir=opendir(CS filter->vacation_directory); | |
3317 | ||
3318 | if (oncelogdir ==(DIR*)0 && errno != ENOENT) | |
3319 | { | |
3320 | filter->errmsg=CUS "unable to open vacation directory"; | |
3321 | return -1; | |
3322 | } | |
3323 | ||
3324 | if (oncelogdir != NULL) | |
3325 | { | |
3326 | time(&now); | |
3327 | ||
3328 | while ((oncelog=readdir(oncelogdir))!=(struct dirent*)0) | |
3329 | { | |
3330 | if (strlen(oncelog->d_name)==32) | |
3331 | { | |
3332 | uschar *s=string_sprintf("%s/%s",filter->vacation_directory,oncelog->d_name); | |
3333 | if (Ustat(s,&properties)==0 && (properties.st_mtime+VACATION_MAX_DAYS*86400)<now) | |
3334 | Uunlink(s); | |
3335 | } | |
3336 | } | |
3337 | closedir(oncelogdir); | |
3338 | } | |
3339 | } | |
3340 | ||
3341 | while (parse_identifier(filter,CUS "require")) | |
3342 | { | |
3343 | /* | |
3344 | require-command = "require" <capabilities: string-list> | |
3345 | */ | |
3346 | ||
3347 | struct String *cap,*check; | |
3348 | int m; | |
3349 | ||
3350 | if (parse_white(filter)==-1) return -1; | |
3351 | if ((m=parse_stringlist(filter,&cap))!=1) | |
3352 | { | |
3353 | if (m==0) filter->errmsg=CUS "capability string list expected"; | |
3354 | return -1; | |
3355 | } | |
3356 | for (check=cap; check->character; ++check) | |
3357 | { | |
5ea81592 PH |
3358 | if (eq_octet(check,&str_envelope,0)) filter->require_envelope=1; |
3359 | else if (eq_octet(check,&str_fileinto,0)) filter->require_fileinto=1; | |
84024b72 PH |
3360 | #ifdef ENCODED_CHARACTER |
3361 | else if (eq_octet(check,&str_encoded_character,0)) filter->require_encoded_character=1; | |
3362 | #endif | |
024bd3c2 PH |
3363 | #ifdef ENVELOPE_AUTH |
3364 | else if (eq_octet(check,&str_envelope_auth,0)) filter->require_envelope_auth=1; | |
3365 | #endif | |
7c5214ec PH |
3366 | #ifdef ENOTIFY |
3367 | else if (eq_octet(check,&str_enotify,0)) filter->require_enotify=1; | |
87fcc8b9 | 3368 | #endif |
059ec3d9 | 3369 | #ifdef SUBADDRESS |
5ea81592 | 3370 | else if (eq_octet(check,&str_subaddress,0)) filter->require_subaddress=1; |
059ec3d9 PH |
3371 | #endif |
3372 | #ifdef VACATION | |
5ea81592 | 3373 | else if (eq_octet(check,&str_vacation,0)) |
059ec3d9 | 3374 | { |
4929acf0 | 3375 | if (filter_test == FTEST_NONE && filter->vacation_directory == NULL) |
059ec3d9 PH |
3376 | { |
3377 | filter->errmsg=CUS "vacation disabled"; | |
3378 | return -1; | |
3379 | } | |
3380 | filter->require_vacation=1; | |
3381 | } | |
3382 | #endif | |
5ea81592 PH |
3383 | else if (eq_octet(check,&str_copy,0)) filter->require_copy=1; |
3384 | else if (eq_octet(check,&str_comparator_ioctet,0)) ; | |
3385 | else if (eq_octet(check,&str_comparator_iascii_casemap,0)) ; | |
3386 | else if (eq_octet(check,&str_comparator_enascii_casemap,0)) ; | |
3387 | else if (eq_octet(check,&str_comparator_iascii_numeric,0)) filter->require_iascii_numeric=1; | |
059ec3d9 PH |
3388 | else |
3389 | { | |
3390 | filter->errmsg=CUS "unknown capability"; | |
3391 | return -1; | |
3392 | } | |
3393 | } | |
3394 | if (parse_semicolon(filter)==-1) return -1; | |
3395 | } | |
3396 | if (parse_commands(filter,exec,generated)==-1) return -1; | |
3397 | if (*filter->pc) | |
3398 | { | |
3399 | filter->errmsg=CUS "syntax error"; | |
3400 | return -1; | |
3401 | } | |
3402 | return 1; | |
3403 | } | |
3404 | ||
3405 | ||
3406 | /************************************************* | |
3407 | * Interpret a sieve filter file * | |
3408 | *************************************************/ | |
3409 | ||
3410 | /* | |
3411 | Arguments: | |
3412 | filter points to the entire file, read into store as a single string | |
3413 | options controls whether various special things are allowed, and requests | |
3414 | special actions (not currently used) | |
3415 | sieve_vacation_directory where to store vacation "once" files | |
e4a89c47 PH |
3416 | useraddress string expression for :user part of address |
3417 | subaddress string expression for :subaddress part of address | |
059ec3d9 PH |
3418 | generated where to hang newly-generated addresses |
3419 | error where to pass back an error text | |
3420 | ||
3421 | Returns: FF_DELIVERED success, a significant action was taken | |
3422 | FF_NOTDELIVERED success, no significant action | |
3423 | FF_DEFER defer requested | |
3424 | FF_FAIL fail requested | |
3425 | FF_FREEZE freeze requested | |
3426 | FF_ERROR there was a problem | |
3427 | */ | |
3428 | ||
3429 | int | |
3430 | sieve_interpret(uschar *filter, int options, uschar *vacation_directory, | |
e4a89c47 | 3431 | uschar *useraddress, uschar *subaddress, address_item **generated, uschar **error) |
059ec3d9 PH |
3432 | { |
3433 | struct Sieve sieve; | |
3434 | int r; | |
3435 | uschar *msg; | |
3436 | ||
3437 | options = options; /* Keep picky compilers happy */ | |
3438 | error = error; | |
3439 | ||
3440 | DEBUG(D_route) debug_printf("Sieve: start of processing\n"); | |
3441 | sieve.filter=filter; | |
3442 | ||
3443 | if (vacation_directory == NULL) | |
3444 | sieve.vacation_directory = NULL; | |
3445 | else | |
3446 | { | |
3447 | sieve.vacation_directory=expand_string(vacation_directory); | |
3448 | if (sieve.vacation_directory == NULL) | |
3449 | { | |
3450 | *error = string_sprintf("failed to expand \"%s\" " | |
3451 | "(sieve_vacation_directory): %s", vacation_directory, | |
3452 | expand_string_message); | |
3453 | return FF_ERROR; | |
3454 | } | |
3455 | } | |
3456 | ||
e4a89c47 PH |
3457 | sieve.useraddress = useraddress == NULL ? CUS "$local_part_prefix$local_part$local_part_suffix" : useraddress; |
3458 | sieve.subaddress = subaddress; | |
3459 | ||
059ec3d9 PH |
3460 | #ifdef COMPILE_SYNTAX_CHECKER |
3461 | if (parse_start(&sieve,0,generated)==1) | |
3462 | #else | |
3463 | if (parse_start(&sieve,1,generated)==1) | |
3464 | #endif | |
3465 | { | |
3466 | if (sieve.keep) | |
3467 | { | |
3468 | add_addr(generated,US"inbox",1,0,0,0); | |
1c59d63b | 3469 | msg = string_sprintf("Implicit keep"); |
059ec3d9 PH |
3470 | r = FF_DELIVERED; |
3471 | } | |
1c59d63b | 3472 | else |
059ec3d9 | 3473 | { |
1c59d63b | 3474 | msg = string_sprintf("No implicit keep"); |
059ec3d9 PH |
3475 | r = FF_DELIVERED; |
3476 | } | |
3477 | } | |
3478 | else | |
3479 | { | |
3480 | msg = string_sprintf("Sieve error: %s in line %d",sieve.errmsg,sieve.line); | |
3481 | #ifdef COMPILE_SYNTAX_CHECKER | |
3482 | r = FF_ERROR; | |
3483 | *error = msg; | |
3484 | #else | |
3485 | add_addr(generated,US"inbox",1,0,0,0); | |
3486 | r = FF_DELIVERED; | |
3487 | #endif | |
3488 | } | |
3489 | ||
3490 | #ifndef COMPILE_SYNTAX_CHECKER | |
f05da2e8 | 3491 | if (filter_test != FTEST_NONE) printf("%s\n", (const char*) msg); |
059ec3d9 PH |
3492 | else debug_printf("%s\n", msg); |
3493 | #endif | |
3494 | ||
3495 | DEBUG(D_route) debug_printf("Sieve: end of processing\n"); | |
3496 | return r; | |
3497 | } |