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Merge branch 'master' into 4.next
[exim.git] / src / src / sieve.c
1 /*************************************************
2 * Exim - an Internet mail transport agent *
3 *************************************************/
4
5 /* Copyright (c) Michael Haardt 2003 - 2015
6 * Copyright (c) The Exim Maintainers 2017
7 * See the file NOTICE for conditions of use and distribution.
8 */
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
31 /* Define this for development of the Sieve extension "encoded-character". */
32 #define ENCODED_CHARACTER
33
34 /* Define this for development of the Sieve extension "envelope-auth". */
35 #undef ENVELOPE_AUTH
36
37 /* Define this for development of the Sieve extension "enotify". */
38 #define ENOTIFY
39
40 /* Define this for the Sieve extension "subaddress". */
41 #define SUBADDRESS
42
43 /* Define this for the Sieve extension "vacation". */
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;
64 #ifdef ENCODED_CHARACTER
65 int require_encoded_character;
66 #endif
67 #ifdef ENVELOPE_AUTH
68 int require_envelope_auth;
69 #endif
70 #ifdef ENOTIFY
71 int require_enotify;
72 struct Notification *notified;
73 #endif
74 uschar *enotify_mailto_owner;
75 #ifdef SUBADDRESS
76 int require_subaddress;
77 #endif
78 #ifdef VACATION
79 int require_vacation;
80 int vacation_ran;
81 #endif
82 uschar *vacation_directory;
83 const uschar *subaddress;
84 const uschar *useraddress;
85 int require_copy;
86 int require_iascii_numeric;
87 };
88
89 enum Comparator { COMP_OCTET, COMP_EN_ASCII_CASEMAP, COMP_ASCII_NUMERIC };
90 enum MatchType { MATCH_IS, MATCH_CONTAINS, MATCH_MATCHES };
91 #ifdef SUBADDRESS
92 enum AddressPart { ADDRPART_USER, ADDRPART_DETAIL, ADDRPART_LOCALPART, ADDRPART_DOMAIN, ADDRPART_ALL };
93 #else
94 enum AddressPart { ADDRPART_LOCALPART, ADDRPART_DOMAIN, ADDRPART_ALL };
95 #endif
96 enum RelOp { LT, LE, EQ, GE, GT, NE };
97
98 struct String
99 {
100 uschar *character;
101 int length;
102 };
103
104 struct Notification
105 {
106 struct String method;
107 struct String importance;
108 struct String message;
109 struct Notification *next;
110 };
111
112 /* This should be a complete list of supported extensions, so that an external
113 ManageSieve (RFC 5804) program can interrogate the current Exim binary for the
114 list of extensions and provide correct information to a client.
115
116 We'll emit the list in the order given here; keep it alphabetically sorted, so
117 that callers don't get surprised.
118
119 List *MUST* end with a NULL. Which at least makes ifdef-vs-comma easier. */
120
121 const uschar *exim_sieve_extension_list[] = {
122 CUS"comparator-i;ascii-numeric",
123 CUS"copy",
124 #ifdef ENCODED_CHARACTER
125 CUS"encoded-character",
126 #endif
127 #ifdef ENOTIFY
128 CUS"enotify",
129 #endif
130 CUS"envelope",
131 #ifdef ENVELOPE_AUTH
132 CUS"envelope-auth",
133 #endif
134 CUS"fileinto",
135 #ifdef SUBADDRESS
136 CUS"subaddress",
137 #endif
138 #ifdef VACATION
139 CUS"vacation",
140 #endif
141 NULL
142 };
143
144 static int eq_asciicase(const struct String *needle, const struct String *haystack, int match_prefix);
145 static int parse_test(struct Sieve *filter, int *cond, int exec);
146 static int parse_commands(struct Sieve *filter, int exec, address_item **generated);
147
148 static uschar str_from_c[]="From";
149 static const struct String str_from={ str_from_c, 4 };
150 static uschar str_to_c[]="To";
151 static const struct String str_to={ str_to_c, 2 };
152 static uschar str_cc_c[]="Cc";
153 static const struct String str_cc={ str_cc_c, 2 };
154 static uschar str_bcc_c[]="Bcc";
155 static const struct String str_bcc={ str_bcc_c, 3 };
156 static uschar str_auth_c[]="auth";
157 static const struct String str_auth={ str_auth_c, 4 };
158 static uschar str_sender_c[]="Sender";
159 static const struct String str_sender={ str_sender_c, 6 };
160 static uschar str_resent_from_c[]="Resent-From";
161 static const struct String str_resent_from={ str_resent_from_c, 11 };
162 static uschar str_resent_to_c[]="Resent-To";
163 static const struct String str_resent_to={ str_resent_to_c, 9 };
164 static uschar str_fileinto_c[]="fileinto";
165 static const struct String str_fileinto={ str_fileinto_c, 8 };
166 static uschar str_envelope_c[]="envelope";
167 static const struct String str_envelope={ str_envelope_c, 8 };
168 #ifdef ENCODED_CHARACTER
169 static uschar str_encoded_character_c[]="encoded-character";
170 static const struct String str_encoded_character={ str_encoded_character_c, 17 };
171 #endif
172 #ifdef ENVELOPE_AUTH
173 static uschar str_envelope_auth_c[]="envelope-auth";
174 static const struct String str_envelope_auth={ str_envelope_auth_c, 13 };
175 #endif
176 #ifdef ENOTIFY
177 static uschar str_enotify_c[]="enotify";
178 static const struct String str_enotify={ str_enotify_c, 7 };
179 static uschar str_online_c[]="online";
180 static const struct String str_online={ str_online_c, 6 };
181 static uschar str_maybe_c[]="maybe";
182 static const struct String str_maybe={ str_maybe_c, 5 };
183 static uschar str_auto_submitted_c[]="Auto-Submitted";
184 static const struct String str_auto_submitted={ str_auto_submitted_c, 14 };
185 #endif
186 #ifdef SUBADDRESS
187 static uschar str_subaddress_c[]="subaddress";
188 static const struct String str_subaddress={ str_subaddress_c, 10 };
189 #endif
190 #ifdef VACATION
191 static uschar str_vacation_c[]="vacation";
192 static const struct String str_vacation={ str_vacation_c, 8 };
193 static uschar str_subject_c[]="Subject";
194 static const struct String str_subject={ str_subject_c, 7 };
195 #endif
196 static uschar str_copy_c[]="copy";
197 static const struct String str_copy={ str_copy_c, 4 };
198 static uschar str_iascii_casemap_c[]="i;ascii-casemap";
199 static const struct String str_iascii_casemap={ str_iascii_casemap_c, 15 };
200 static uschar str_enascii_casemap_c[]="en;ascii-casemap";
201 static const struct String str_enascii_casemap={ str_enascii_casemap_c, 16 };
202 static uschar str_ioctet_c[]="i;octet";
203 static const struct String str_ioctet={ str_ioctet_c, 7 };
204 static uschar str_iascii_numeric_c[]="i;ascii-numeric";
205 static const struct String str_iascii_numeric={ str_iascii_numeric_c, 15 };
206 static uschar str_comparator_iascii_casemap_c[]="comparator-i;ascii-casemap";
207 static const struct String str_comparator_iascii_casemap={ str_comparator_iascii_casemap_c, 26 };
208 static uschar str_comparator_enascii_casemap_c[]="comparator-en;ascii-casemap";
209 static const struct String str_comparator_enascii_casemap={ str_comparator_enascii_casemap_c, 27 };
210 static uschar str_comparator_ioctet_c[]="comparator-i;octet";
211 static const struct String str_comparator_ioctet={ str_comparator_ioctet_c, 18 };
212 static uschar str_comparator_iascii_numeric_c[]="comparator-i;ascii-numeric";
213 static const struct String str_comparator_iascii_numeric={ str_comparator_iascii_numeric_c, 26 };
214
215
216 /*************************************************
217 * Encode to quoted-printable *
218 *************************************************/
219
220 /*
221 Arguments:
222 src UTF-8 string
223 dst US-ASCII string
224
225 Returns
226 dst
227 */
228
229 static struct String *quoted_printable_encode(const struct String *src, struct String *dst)
230 {
231 int pass;
232 const uschar *start,*end;
233 uschar *new = NULL;
234 uschar ch;
235 size_t line;
236
237 /* Two passes: one to count output allocation size, second
238 to do the encoding */
239
240 for (pass=0; pass<=1; ++pass)
241 {
242 line=0;
243 if (pass==0)
244 dst->length=0;
245 else
246 {
247 dst->character=store_get(dst->length+1); /* plus one for \0 */
248 new=dst->character;
249 }
250 for (start=src->character,end=start+src->length; start<end; ++start)
251 {
252 ch=*start;
253 if (line>=73) /* line length limit */
254 {
255 if (pass==0)
256 dst->length+=2;
257 else
258 {
259 *new++='='; /* line split */
260 *new++='\n';
261 }
262 line=0;
263 }
264 if ( (ch>='!' && ch<='<')
265 || (ch>='>' && ch<='~')
266 || ( (ch=='\t' || ch==' ')
267 && start+2<end
268 && (*(start+1)!='\r' || *(start+2)!='\n') /* CRLF */
269 )
270 )
271 {
272 if (pass==0)
273 ++dst->length;
274 else
275 *new++=*start; /* copy char */
276 ++line;
277 }
278 else if (ch=='\r' && start+1<end && *(start+1)=='\n') /* CRLF */
279 {
280 if (pass==0)
281 ++dst->length;
282 else
283 *new++='\n'; /* NL */
284 line=0;
285 ++start; /* consume extra input char */
286 }
287 else
288 {
289 if (pass==0)
290 dst->length+=3;
291 else
292 { /* encoded char */
293 new += sprintf(CS new,"=%02X",ch);
294 }
295 line+=3;
296 }
297 }
298 }
299 *new='\0'; /* not included in length, but nice */
300 return dst;
301 }
302
303
304 /*************************************************
305 * Check mail address for correct syntax *
306 *************************************************/
307
308 /*
309 Check mail address for being syntactically correct.
310
311 Arguments:
312 filter points to the Sieve filter including its state
313 address String containing one address
314
315 Returns
316 1 Mail address is syntactically OK
317 -1 syntax error
318 */
319
320 int check_mail_address(struct Sieve *filter, const struct String *address)
321 {
322 int start, end, domain;
323 uschar *error,*ss;
324
325 if (address->length>0)
326 {
327 ss = parse_extract_address(address->character, &error, &start, &end, &domain,
328 FALSE);
329 if (ss == NULL)
330 {
331 filter->errmsg=string_sprintf("malformed address \"%s\" (%s)",
332 address->character, error);
333 return -1;
334 }
335 else
336 return 1;
337 }
338 else
339 {
340 filter->errmsg=CUS "empty address";
341 return -1;
342 }
343 }
344
345
346 /*************************************************
347 * Decode URI encoded string *
348 *************************************************/
349
350 /*
351 Arguments:
352 str URI encoded string
353
354 Returns
355 0 Decoding successful
356 -1 Encoding error
357 */
358
359 #ifdef ENOTIFY
360 static int uri_decode(struct String *str)
361 {
362 uschar *s,*t,*e;
363
364 if (str->length==0) return 0;
365 for (s=str->character,t=s,e=s+str->length; s<e; )
366 {
367 if (*s=='%')
368 {
369 if (s+2<e && isxdigit(*(s+1)) && isxdigit(*(s+2)))
370 {
371 *t++=((isdigit(*(s+1)) ? *(s+1)-'0' : tolower(*(s+1))-'a'+10)<<4)
372 | (isdigit(*(s+2)) ? *(s+2)-'0' : tolower(*(s+2))-'a'+10);
373 s+=3;
374 }
375 else return -1;
376 }
377 else
378 *t++=*s++;
379 }
380 *t='\0';
381 str->length=t-str->character;
382 return 0;
383 }
384
385
386 /*************************************************
387 * Parse mailto URI *
388 *************************************************/
389
390 /*
391 Parse mailto-URI.
392
393 mailtoURI = "mailto:" [ to ] [ headers ]
394 to = [ addr-spec *("%2C" addr-spec ) ]
395 headers = "?" header *( "&" header )
396 header = hname "=" hvalue
397 hname = *urlc
398 hvalue = *urlc
399
400 Arguments:
401 filter points to the Sieve filter including its state
402 uri URI, excluding scheme
403 recipient
404 body
405
406 Returns
407 1 URI is syntactically OK
408 0 Unknown URI scheme
409 -1 syntax error
410 */
411
412 static int
413 parse_mailto_uri(struct Sieve *filter, const uschar *uri,
414 string_item **recipient, struct String *header, struct String *subject,
415 struct String *body)
416 {
417 const uschar *start;
418 struct String to, hname;
419 struct String hvalue = {.character = NULL, .length = 0};
420 string_item *new;
421
422 if (Ustrncmp(uri,"mailto:",7))
423 {
424 filter->errmsg=US "Unknown URI scheme";
425 return 0;
426 }
427
428 uri+=7;
429 if (*uri && *uri!='?')
430 for (;;)
431 {
432 /* match to */
433 for (start=uri; *uri && *uri!='?' && (*uri!='%' || *(uri+1)!='2' || tolower(*(uri+2))!='c'); ++uri);
434 if (uri>start)
435 {
436 gstring * g = string_catn(NULL, start, uri-start);
437
438 to.character = string_from_gstring(g);
439 to.length = g->ptr;
440 if (uri_decode(&to)==-1)
441 {
442 filter->errmsg=US"Invalid URI encoding";
443 return -1;
444 }
445 new=store_get(sizeof(string_item));
446 new->text=store_get(to.length+1);
447 if (to.length) memcpy(new->text,to.character,to.length);
448 new->text[to.length]='\0';
449 new->next=*recipient;
450 *recipient=new;
451 }
452 else
453 {
454 filter->errmsg=US"Missing addr-spec in URI";
455 return -1;
456 }
457 if (*uri=='%') uri+=3;
458 else break;
459 }
460 if (*uri=='?')
461 {
462 ++uri;
463 for (;;)
464 {
465 /* match hname */
466 for (start=uri; *uri && (isalnum(*uri) || strchr("$-_.+!*'(),%",*uri)); ++uri);
467 if (uri>start)
468 {
469 gstring * g = string_catn(NULL, start, uri-start);
470
471 hname.character = string_from_gstring(g);
472 hname.length = g->ptr;
473 if (uri_decode(&hname)==-1)
474 {
475 filter->errmsg=US"Invalid URI encoding";
476 return -1;
477 }
478 }
479 /* match = */
480 if (*uri=='=')
481 ++uri;
482 else
483 {
484 filter->errmsg=US"Missing equal after hname";
485 return -1;
486 }
487 /* match hvalue */
488 for (start=uri; *uri && (isalnum(*uri) || strchr("$-_.+!*'(),%",*uri)); ++uri);
489 if (uri>start)
490 {
491 gstring * g = string_catn(NULL, start, uri-start);
492
493 hname.character = string_from_gstring(g);
494 hname.length = g->ptr;
495 if (uri_decode(&hvalue)==-1)
496 {
497 filter->errmsg=US"Invalid URI encoding";
498 return -1;
499 }
500 }
501 if (hname.length==2 && strcmpic(hname.character, US"to")==0)
502 {
503 new=store_get(sizeof(string_item));
504 new->text=store_get(hvalue.length+1);
505 if (hvalue.length) memcpy(new->text,hvalue.character,hvalue.length);
506 new->text[hvalue.length]='\0';
507 new->next=*recipient;
508 *recipient=new;
509 }
510 else if (hname.length==4 && strcmpic(hname.character, US"body")==0)
511 *body=hvalue;
512 else if (hname.length==7 && strcmpic(hname.character, US"subject")==0)
513 *subject=hvalue;
514 else
515 {
516 static struct String ignore[]=
517 {
518 {US"date",4},
519 {US"from",4},
520 {US"message-id",10},
521 {US"received",8},
522 {US"auto-submitted",14}
523 };
524 static struct String *end=ignore+sizeof(ignore)/sizeof(ignore[0]);
525 struct String *i;
526
527 for (i=ignore; i<end && !eq_asciicase(&hname,i,0); ++i);
528 if (i==end)
529 {
530 gstring * g;
531
532 if (header->length==-1) header->length = 0;
533
534 g = string_catn(NULL, header->character, header->length);
535 g = string_catn(g, hname.character, hname.length);
536 g = string_catn(g, CUS ": ", 2);
537 g = string_catn(g, hvalue.character, hvalue.length);
538 g = string_catn(g, CUS "\n", 1);
539
540 header->character = string_from_gstring(g);
541 header->length = g->ptr;
542 }
543 }
544 if (*uri=='&') ++uri;
545 else break;
546 }
547 }
548 if (*uri)
549 {
550 filter->errmsg=US"Syntactically invalid URI";
551 return -1;
552 }
553 return 1;
554 }
555 #endif
556
557
558 /*************************************************
559 * Octet-wise string comparison *
560 *************************************************/
561
562 /*
563 Arguments:
564 needle UTF-8 string to search ...
565 haystack ... inside the haystack
566 match_prefix 1 to compare if needle is a prefix of haystack
567
568 Returns: 0 needle not found in haystack
569 1 needle found
570 */
571
572 static int eq_octet(const struct String *needle,
573 const struct String *haystack, int match_prefix)
574 {
575 size_t nl,hl;
576 const uschar *n,*h;
577
578 nl=needle->length;
579 n=needle->character;
580 hl=haystack->length;
581 h=haystack->character;
582 while (nl>0 && hl>0)
583 {
584 #if !HAVE_ICONV
585 if (*n&0x80) return 0;
586 if (*h&0x80) return 0;
587 #endif
588 if (*n!=*h) return 0;
589 ++n;
590 ++h;
591 --nl;
592 --hl;
593 }
594 return (match_prefix ? nl==0 : nl==0 && hl==0);
595 }
596
597
598 /*************************************************
599 * ASCII case-insensitive string comparison *
600 *************************************************/
601
602 /*
603 Arguments:
604 needle UTF-8 string to search ...
605 haystack ... inside the haystack
606 match_prefix 1 to compare if needle is a prefix of haystack
607
608 Returns: 0 needle not found in haystack
609 1 needle found
610 */
611
612 static int eq_asciicase(const struct String *needle,
613 const struct String *haystack, int match_prefix)
614 {
615 size_t nl,hl;
616 const uschar *n,*h;
617 uschar nc,hc;
618
619 nl=needle->length;
620 n=needle->character;
621 hl=haystack->length;
622 h=haystack->character;
623 while (nl>0 && hl>0)
624 {
625 nc=*n;
626 hc=*h;
627 #if !HAVE_ICONV
628 if (nc&0x80) return 0;
629 if (hc&0x80) return 0;
630 #endif
631 /* tolower depends on the locale and only ASCII case must be insensitive */
632 if ((nc>='A' && nc<='Z' ? nc|0x20 : nc) != (hc>='A' && hc<='Z' ? hc|0x20 : hc)) return 0;
633 ++n;
634 ++h;
635 --nl;
636 --hl;
637 }
638 return (match_prefix ? nl==0 : nl==0 && hl==0);
639 }
640
641
642 /*************************************************
643 * Glob pattern search *
644 *************************************************/
645
646 /*
647 Arguments:
648 needle pattern to search ...
649 haystack ... inside the haystack
650 ascii_caseless ignore ASCII case
651 match_octet match octets, not UTF-8 multi-octet characters
652
653 Returns: 0 needle not found in haystack
654 1 needle found
655 -1 pattern error
656 */
657
658 static int eq_glob(const struct String *needle,
659 const struct String *haystack, int ascii_caseless, int match_octet)
660 {
661 const uschar *n,*h,*nend,*hend;
662 int may_advance=0;
663
664 n=needle->character;
665 h=haystack->character;
666 nend=n+needle->length;
667 hend=h+haystack->length;
668 while (n<nend)
669 {
670 if (*n=='*')
671 {
672 ++n;
673 may_advance=1;
674 }
675 else
676 {
677 const uschar *npart,*hpart;
678
679 /* Try to match a non-star part of the needle at the current */
680 /* position in the haystack. */
681 match_part:
682 npart=n;
683 hpart=h;
684 while (npart<nend && *npart!='*') switch (*npart)
685 {
686 case '?':
687 {
688 if (hpart==hend) return 0;
689 if (match_octet)
690 ++hpart;
691 else
692 {
693 /* Match one UTF8 encoded character */
694 if ((*hpart&0xc0)==0xc0)
695 {
696 ++hpart;
697 while (hpart<hend && ((*hpart&0xc0)==0x80)) ++hpart;
698 }
699 else
700 ++hpart;
701 }
702 ++npart;
703 break;
704 }
705 case '\\':
706 {
707 ++npart;
708 if (npart==nend) return -1;
709 /* FALLTHROUGH */
710 }
711 default:
712 {
713 if (hpart==hend) return 0;
714 /* tolower depends on the locale, but we need ASCII */
715 if
716 (
717 #if !HAVE_ICONV
718 (*hpart&0x80) || (*npart&0x80) ||
719 #endif
720 ascii_caseless
721 ? ((*npart>='A' && *npart<='Z' ? *npart|0x20 : *npart) != (*hpart>='A' && *hpart<='Z' ? *hpart|0x20 : *hpart))
722 : *hpart!=*npart
723 )
724 {
725 if (may_advance)
726 /* string match after a star failed, advance and try again */
727 {
728 ++h;
729 goto match_part;
730 }
731 else return 0;
732 }
733 else
734 {
735 ++npart;
736 ++hpart;
737 };
738 }
739 }
740 /* at this point, a part was matched successfully */
741 if (may_advance && npart==nend && hpart<hend)
742 /* needle ends, but haystack does not: if there was a star before, advance and try again */
743 {
744 ++h;
745 goto match_part;
746 }
747 h=hpart;
748 n=npart;
749 may_advance=0;
750 }
751 }
752 return (h==hend ? 1 : may_advance);
753 }
754
755
756 /*************************************************
757 * ASCII numeric comparison *
758 *************************************************/
759
760 /*
761 Arguments:
762 a first numeric string
763 b second numeric string
764 relop relational operator
765
766 Returns: 0 not (a relop b)
767 1 a relop b
768 */
769
770 static int eq_asciinumeric(const struct String *a,
771 const struct String *b, enum RelOp relop)
772 {
773 size_t al,bl;
774 const uschar *as,*aend,*bs,*bend;
775 int cmp;
776
777 as=a->character;
778 aend=a->character+a->length;
779 bs=b->character;
780 bend=b->character+b->length;
781
782 while (*as>='0' && *as<='9' && as<aend) ++as;
783 al=as-a->character;
784 while (*bs>='0' && *bs<='9' && bs<bend) ++bs;
785 bl=bs-b->character;
786
787 if (al && bl==0) cmp=-1;
788 else if (al==0 && bl==0) cmp=0;
789 else if (al==0 && bl) cmp=1;
790 else
791 {
792 cmp=al-bl;
793 if (cmp==0) cmp=memcmp(a->character,b->character,al);
794 }
795 switch (relop)
796 {
797 case LT: return cmp<0;
798 case LE: return cmp<=0;
799 case EQ: return cmp==0;
800 case GE: return cmp>=0;
801 case GT: return cmp>0;
802 case NE: return cmp!=0;
803 }
804 /*NOTREACHED*/
805 return -1;
806 }
807
808
809 /*************************************************
810 * Compare strings *
811 *************************************************/
812
813 /*
814 Arguments:
815 filter points to the Sieve filter including its state
816 needle UTF-8 pattern or string to search ...
817 haystack ... inside the haystack
818 co comparator to use
819 mt match type to use
820
821 Returns: 0 needle not found in haystack
822 1 needle found
823 -1 comparator does not offer matchtype
824 */
825
826 static int compare(struct Sieve *filter, const struct String *needle, const struct String *haystack,
827 enum Comparator co, enum MatchType mt)
828 {
829 int r=0;
830
831 if ((filter_test != FTEST_NONE && debug_selector != 0) ||
832 (debug_selector & D_filter) != 0)
833 {
834 debug_printf("String comparison (match ");
835 switch (mt)
836 {
837 case MATCH_IS: debug_printf(":is"); break;
838 case MATCH_CONTAINS: debug_printf(":contains"); break;
839 case MATCH_MATCHES: debug_printf(":matches"); break;
840 }
841 debug_printf(", comparison \"");
842 switch (co)
843 {
844 case COMP_OCTET: debug_printf("i;octet"); break;
845 case COMP_EN_ASCII_CASEMAP: debug_printf("en;ascii-casemap"); break;
846 case COMP_ASCII_NUMERIC: debug_printf("i;ascii-numeric"); break;
847 }
848 debug_printf("\"):\n");
849 debug_printf(" Search = %s (%d chars)\n", needle->character,needle->length);
850 debug_printf(" Inside = %s (%d chars)\n", haystack->character,haystack->length);
851 }
852 switch (mt)
853 {
854 case MATCH_IS:
855 {
856 switch (co)
857 {
858 case COMP_OCTET:
859 {
860 if (eq_octet(needle,haystack,0)) r=1;
861 break;
862 }
863 case COMP_EN_ASCII_CASEMAP:
864 {
865 if (eq_asciicase(needle,haystack,0)) r=1;
866 break;
867 }
868 case COMP_ASCII_NUMERIC:
869 {
870 if (!filter->require_iascii_numeric)
871 {
872 filter->errmsg=CUS "missing previous require \"comparator-i;ascii-numeric\";";
873 return -1;
874 }
875 if (eq_asciinumeric(needle,haystack,EQ)) r=1;
876 break;
877 }
878 }
879 break;
880 }
881 case MATCH_CONTAINS:
882 {
883 struct String h;
884
885 switch (co)
886 {
887 case COMP_OCTET:
888 {
889 for (h=*haystack; h.length; ++h.character,--h.length) if (eq_octet(needle,&h,1)) { r=1; break; }
890 break;
891 }
892 case COMP_EN_ASCII_CASEMAP:
893 {
894 for (h=*haystack; h.length; ++h.character,--h.length) if (eq_asciicase(needle,&h,1)) { r=1; break; }
895 break;
896 }
897 default:
898 {
899 filter->errmsg=CUS "comparator does not offer specified matchtype";
900 return -1;
901 }
902 }
903 break;
904 }
905 case MATCH_MATCHES:
906 {
907 switch (co)
908 {
909 case COMP_OCTET:
910 {
911 if ((r=eq_glob(needle,haystack,0,1))==-1)
912 {
913 filter->errmsg=CUS "syntactically invalid pattern";
914 return -1;
915 }
916 break;
917 }
918 case COMP_EN_ASCII_CASEMAP:
919 {
920 if ((r=eq_glob(needle,haystack,1,1))==-1)
921 {
922 filter->errmsg=CUS "syntactically invalid pattern";
923 return -1;
924 }
925 break;
926 }
927 default:
928 {
929 filter->errmsg=CUS "comparator does not offer specified matchtype";
930 return -1;
931 }
932 }
933 break;
934 }
935 }
936 if ((filter_test != FTEST_NONE && debug_selector != 0) ||
937 (debug_selector & D_filter) != 0)
938 debug_printf(" Result %s\n",r?"true":"false");
939 return r;
940 }
941
942
943 /*************************************************
944 * Check header field syntax *
945 *************************************************/
946
947 /*
948 RFC 2822, section 3.6.8 says:
949
950 field-name = 1*ftext
951
952 ftext = %d33-57 / ; Any character except
953 %d59-126 ; controls, SP, and
954 ; ":".
955
956 That forbids 8-bit header fields. This implementation accepts them, since
957 all of Exim is 8-bit clean, so it adds %d128-%d255.
958
959 Arguments:
960 header header field to quote for suitable use in Exim expansions
961
962 Returns: 0 string is not a valid header field
963 1 string is a value header field
964 */
965
966 static int is_header(const struct String *header)
967 {
968 size_t l;
969 const uschar *h;
970
971 l=header->length;
972 h=header->character;
973 if (l==0) return 0;
974 while (l)
975 {
976 if (((unsigned char)*h)<33 || ((unsigned char)*h)==':' || ((unsigned char)*h)==127) return 0;
977 else
978 {
979 ++h;
980 --l;
981 }
982 }
983 return 1;
984 }
985
986
987 /*************************************************
988 * Quote special characters string *
989 *************************************************/
990
991 /*
992 Arguments:
993 header header field to quote for suitable use in Exim expansions
994 or as debug output
995
996 Returns: quoted string
997 */
998
999 static const uschar *
1000 quote(const struct String *header)
1001 {
1002 gstring * quoted = NULL;
1003 size_t l;
1004 const uschar *h;
1005
1006 l=header->length;
1007 h=header->character;
1008 while (l)
1009 {
1010 switch (*h)
1011 {
1012 case '\0':
1013 quoted = string_catn(quoted, CUS "\\0", 2);
1014 break;
1015 case '$':
1016 case '{':
1017 case '}':
1018 quoted = string_catn(quoted, CUS "\\", 1);
1019 default:
1020 quoted = string_catn(quoted, h, 1);
1021 }
1022 ++h;
1023 --l;
1024 }
1025 quoted = string_catn(quoted, CUS "", 1);
1026 return string_from_gstring(quoted);
1027 }
1028
1029
1030 /*************************************************
1031 * Add address to list of generated addresses *
1032 *************************************************/
1033
1034 /*
1035 According to RFC 5228, duplicate delivery to the same address must
1036 not happen, so the list is first searched for the address.
1037
1038 Arguments:
1039 generated list of generated addresses
1040 addr new address to add
1041 file address denotes a file
1042
1043 Returns: nothing
1044 */
1045
1046 static void
1047 add_addr(address_item **generated, uschar *addr, int file, int maxage, int maxmessages, int maxstorage)
1048 {
1049 address_item *new_addr;
1050
1051 for (new_addr=*generated; new_addr; new_addr=new_addr->next)
1052 if ( Ustrcmp(new_addr->address,addr) == 0
1053 && ( !file
1054 || testflag(new_addr, af_pfr)
1055 || testflag(new_addr, af_file)
1056 )
1057 )
1058 {
1059 if ((filter_test != FTEST_NONE && debug_selector != 0) || (debug_selector & D_filter) != 0)
1060 debug_printf("Repeated %s `%s' ignored.\n",file ? "fileinto" : "redirect", addr);
1061
1062 return;
1063 }
1064
1065 if ((filter_test != FTEST_NONE && debug_selector != 0) || (debug_selector & D_filter) != 0)
1066 debug_printf("%s `%s'\n",file ? "fileinto" : "redirect", addr);
1067
1068 new_addr = deliver_make_addr(addr,TRUE);
1069 if (file)
1070 {
1071 setflag(new_addr, af_pfr);
1072 setflag(new_addr, af_file);
1073 new_addr->mode = 0;
1074 }
1075 new_addr->prop.errors_address = NULL;
1076 new_addr->next = *generated;
1077 *generated = new_addr;
1078 }
1079
1080
1081 /*************************************************
1082 * Return decoded header field *
1083 *************************************************/
1084
1085 /*
1086 Unfold the header field as described in RFC 2822 and remove all
1087 leading and trailing white space, then perform MIME decoding and
1088 translate the header field to UTF-8.
1089
1090 Arguments:
1091 value returned value of the field
1092 header name of the header field
1093
1094 Returns: nothing The expanded string is empty
1095 in case there is no such header
1096 */
1097
1098 static void expand_header(struct String *value, const struct String *header)
1099 {
1100 uschar *s,*r,*t;
1101 uschar *errmsg;
1102
1103 value->length=0;
1104 value->character=(uschar*)0;
1105
1106 t=r=s=expand_string(string_sprintf("$rheader_%s",quote(header)));
1107 while (*r==' ' || *r=='\t') ++r;
1108 while (*r)
1109 {
1110 if (*r=='\n')
1111 ++r;
1112 else
1113 *t++=*r++;
1114 }
1115 while (t>s && (*(t-1)==' ' || *(t-1)=='\t')) --t;
1116 *t='\0';
1117 value->character=rfc2047_decode(s,check_rfc2047_length,US"utf-8",'\0',&value->length,&errmsg);
1118 }
1119
1120
1121 /*************************************************
1122 * Parse remaining hash comment *
1123 *************************************************/
1124
1125 /*
1126 Token definition:
1127 Comment up to terminating CRLF
1128
1129 Arguments:
1130 filter points to the Sieve filter including its state
1131
1132 Returns: 1 success
1133 -1 syntax error
1134 */
1135
1136 static int parse_hashcomment(struct Sieve *filter)
1137 {
1138 ++filter->pc;
1139 while (*filter->pc)
1140 {
1141 #ifdef RFC_EOL
1142 if (*filter->pc=='\r' && *(filter->pc+1)=='\n')
1143 #else
1144 if (*filter->pc=='\n')
1145 #endif
1146 {
1147 #ifdef RFC_EOL
1148 filter->pc+=2;
1149 #else
1150 ++filter->pc;
1151 #endif
1152 ++filter->line;
1153 return 1;
1154 }
1155 else ++filter->pc;
1156 }
1157 filter->errmsg=CUS "missing end of comment";
1158 return -1;
1159 }
1160
1161
1162 /*************************************************
1163 * Parse remaining C-style comment *
1164 *************************************************/
1165
1166 /*
1167 Token definition:
1168 Everything up to star slash
1169
1170 Arguments:
1171 filter points to the Sieve filter including its state
1172
1173 Returns: 1 success
1174 -1 syntax error
1175 */
1176
1177 static int parse_comment(struct Sieve *filter)
1178 {
1179 filter->pc+=2;
1180 while (*filter->pc)
1181 {
1182 if (*filter->pc=='*' && *(filter->pc+1)=='/')
1183 {
1184 filter->pc+=2;
1185 return 1;
1186 }
1187 else ++filter->pc;
1188 }
1189 filter->errmsg=CUS "missing end of comment";
1190 return -1;
1191 }
1192
1193
1194 /*************************************************
1195 * Parse optional white space *
1196 *************************************************/
1197
1198 /*
1199 Token definition:
1200 Spaces, tabs, CRLFs, hash comments or C-style comments
1201
1202 Arguments:
1203 filter points to the Sieve filter including its state
1204
1205 Returns: 1 success
1206 -1 syntax error
1207 */
1208
1209 static int parse_white(struct Sieve *filter)
1210 {
1211 while (*filter->pc)
1212 {
1213 if (*filter->pc==' ' || *filter->pc=='\t') ++filter->pc;
1214 #ifdef RFC_EOL
1215 else if (*filter->pc=='\r' && *(filter->pc+1)=='\n')
1216 #else
1217 else if (*filter->pc=='\n')
1218 #endif
1219 {
1220 #ifdef RFC_EOL
1221 filter->pc+=2;
1222 #else
1223 ++filter->pc;
1224 #endif
1225 ++filter->line;
1226 }
1227 else if (*filter->pc=='#')
1228 {
1229 if (parse_hashcomment(filter)==-1) return -1;
1230 }
1231 else if (*filter->pc=='/' && *(filter->pc+1)=='*')
1232 {
1233 if (parse_comment(filter)==-1) return -1;
1234 }
1235 else break;
1236 }
1237 return 1;
1238 }
1239
1240
1241 #ifdef ENCODED_CHARACTER
1242 /*************************************************
1243 * Decode hex-encoded-character string *
1244 *************************************************/
1245
1246 /*
1247 Encoding definition:
1248 blank = SP / TAB / CRLF
1249 hex-pair-seq = *blank hex-pair *(1*blank hex-pair) *blank
1250 hex-pair = 1*2HEXDIG
1251
1252 Arguments:
1253 src points to a hex-pair-seq
1254 end points to its end
1255 dst points to the destination of the decoded octets,
1256 optionally to (uschar*)0 for checking only
1257
1258 Returns: >=0 number of decoded octets
1259 -1 syntax error
1260 */
1261
1262 static int hex_decode(uschar *src, uschar *end, uschar *dst)
1263 {
1264 int decoded=0;
1265
1266 while (*src==' ' || *src=='\t' || *src=='\n') ++src;
1267 do
1268 {
1269 int x,d,n;
1270
1271 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);
1272 if (d==0) return -1;
1273 if (dst) *dst++=x;
1274 ++decoded;
1275 if (src==end) return decoded;
1276 if (*src==' ' || *src=='\t' || *src=='\n')
1277 while (*src==' ' || *src=='\t' || *src=='\n') ++src;
1278 else
1279 return -1;
1280 }
1281 while (src<end);
1282 return decoded;
1283 }
1284
1285
1286 /*************************************************
1287 * Decode unicode-encoded-character string *
1288 *************************************************/
1289
1290 /*
1291 Encoding definition:
1292 blank = SP / TAB / CRLF
1293 unicode-hex-seq = *blank unicode-hex *(blank unicode-hex) *blank
1294 unicode-hex = 1*HEXDIG
1295
1296 It is an error for a script to use a hexadecimal value that isn't in
1297 either the range 0 to D7FF or the range E000 to 10FFFF.
1298
1299 At this time, strings are already scanned, thus the CRLF is converted
1300 to the internally used \n (should RFC_EOL have been used).
1301
1302 Arguments:
1303 src points to a unicode-hex-seq
1304 end points to its end
1305 dst points to the destination of the decoded octets,
1306 optionally to (uschar*)0 for checking only
1307
1308 Returns: >=0 number of decoded octets
1309 -1 syntax error
1310 -2 semantic error (character range violation)
1311 */
1312
1313 static int unicode_decode(uschar *src, uschar *end, uschar *dst)
1314 {
1315 int decoded=0;
1316
1317 while (*src==' ' || *src=='\t' || *src=='\n') ++src;
1318 do
1319 {
1320 uschar *hex_seq;
1321 int c,d,n;
1322
1323 unicode_hex:
1324 for (hex_seq=src; src<end && *src=='0'; ++src);
1325 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);
1326 if (src==hex_seq) return -1;
1327 if (d==7 || (!((c>=0 && c<=0xd7ff) || (c>=0xe000 && c<=0x10ffff)))) return -2;
1328 if (c<128)
1329 {
1330 if (dst) *dst++=c;
1331 ++decoded;
1332 }
1333 else if (c>=0x80 && c<=0x7ff)
1334 {
1335 if (dst)
1336 {
1337 *dst++=192+(c>>6);
1338 *dst++=128+(c&0x3f);
1339 }
1340 decoded+=2;
1341 }
1342 else if (c>=0x800 && c<=0xffff)
1343 {
1344 if (dst)
1345 {
1346 *dst++=224+(c>>12);
1347 *dst++=128+((c>>6)&0x3f);
1348 *dst++=128+(c&0x3f);
1349 }
1350 decoded+=3;
1351 }
1352 else if (c>=0x10000 && c<=0x1fffff)
1353 {
1354 if (dst)
1355 {
1356 *dst++=240+(c>>18);
1357 *dst++=128+((c>>10)&0x3f);
1358 *dst++=128+((c>>6)&0x3f);
1359 *dst++=128+(c&0x3f);
1360 }
1361 decoded+=4;
1362 }
1363 if (*src==' ' || *src=='\t' || *src=='\n')
1364 {
1365 while (*src==' ' || *src=='\t' || *src=='\n') ++src;
1366 if (src==end) return decoded;
1367 goto unicode_hex;
1368 }
1369 }
1370 while (src<end);
1371 return decoded;
1372 }
1373
1374
1375 /*************************************************
1376 * Decode encoded-character string *
1377 *************************************************/
1378
1379 /*
1380 Encoding definition:
1381 encoded-arb-octets = "${hex:" hex-pair-seq "}"
1382 encoded-unicode-char = "${unicode:" unicode-hex-seq "}"
1383
1384 Arguments:
1385 encoded points to an encoded string, returns decoded string
1386 filter points to the Sieve filter including its state
1387
1388 Returns: 1 success
1389 -1 syntax error
1390 */
1391
1392 static int string_decode(struct Sieve *filter, struct String *data)
1393 {
1394 uschar *src,*dst,*end;
1395
1396 src=data->character;
1397 dst=src;
1398 end=data->character+data->length;
1399 while (src<end)
1400 {
1401 uschar *brace;
1402
1403 if (
1404 strncmpic(src,US "${hex:",6)==0
1405 && (brace=Ustrchr(src+6,'}'))!=(uschar*)0
1406 && (hex_decode(src+6,brace,(uschar*)0))>=0
1407 )
1408 {
1409 dst+=hex_decode(src+6,brace,dst);
1410 src=brace+1;
1411 }
1412 else if (
1413 strncmpic(src,US "${unicode:",10)==0
1414 && (brace=Ustrchr(src+10,'}'))!=(uschar*)0
1415 )
1416 {
1417 switch (unicode_decode(src+10,brace,(uschar*)0))
1418 {
1419 case -2:
1420 {
1421 filter->errmsg=CUS "unicode character out of range";
1422 return -1;
1423 }
1424 case -1:
1425 {
1426 *dst++=*src++;
1427 break;
1428 }
1429 default:
1430 {
1431 dst+=unicode_decode(src+10,brace,dst);
1432 src=brace+1;
1433 }
1434 }
1435 }
1436 else *dst++=*src++;
1437 }
1438 data->length=dst-data->character;
1439 *dst='\0';
1440 return 1;
1441 }
1442 #endif
1443
1444
1445 /*************************************************
1446 * Parse an optional string *
1447 *************************************************/
1448
1449 /*
1450 Token definition:
1451 quoted-string = DQUOTE *CHAR DQUOTE
1452 ;; in general, \ CHAR inside a string maps to CHAR
1453 ;; so \" maps to " and \\ maps to \
1454 ;; note that newlines and other characters are all allowed
1455 ;; in strings
1456
1457 multi-line = "text:" *(SP / HTAB) (hash-comment / CRLF)
1458 *(multi-line-literal / multi-line-dotstuff)
1459 "." CRLF
1460 multi-line-literal = [CHAR-NOT-DOT *CHAR-NOT-CRLF] CRLF
1461 multi-line-dotstuff = "." 1*CHAR-NOT-CRLF CRLF
1462 ;; A line containing only "." ends the multi-line.
1463 ;; Remove a leading '.' if followed by another '.'.
1464 string = quoted-string / multi-line
1465
1466 Arguments:
1467 filter points to the Sieve filter including its state
1468 id specifies identifier to match
1469
1470 Returns: 1 success
1471 -1 syntax error
1472 0 identifier not matched
1473 */
1474
1475 static int parse_string(struct Sieve *filter, struct String *data)
1476 {
1477 gstring * g = NULL;
1478 int dataCapacity=0;
1479
1480 data->length = 0;
1481 data->character = NULL;
1482
1483 if (*filter->pc=='"') /* quoted string */
1484 {
1485 ++filter->pc;
1486 while (*filter->pc)
1487 {
1488 if (*filter->pc=='"') /* end of string */
1489 {
1490 ++filter->pc;
1491
1492 if (g)
1493 {
1494 data->character = string_from_gstring(g);
1495 data->length = g->ptr;
1496 }
1497 else
1498 data->character = US"\0";
1499 /* that way, there will be at least one character allocated */
1500
1501 #ifdef ENCODED_CHARACTER
1502 if (filter->require_encoded_character
1503 && string_decode(filter,data)==-1)
1504 return -1;
1505 #endif
1506 return 1;
1507 }
1508 else if (*filter->pc=='\\' && *(filter->pc+1)) /* quoted character */
1509 {
1510 g = string_catn(g, filter->pc+1, 1);
1511 filter->pc+=2;
1512 }
1513 else /* regular character */
1514 {
1515 #ifdef RFC_EOL
1516 if (*filter->pc=='\r' && *(filter->pc+1)=='\n') ++filter->line;
1517 #else
1518 if (*filter->pc=='\n')
1519 {
1520 g = string_catn(g, US"\r", 1);
1521 ++filter->line;
1522 }
1523 #endif
1524 g = string_catn(g, filter->pc, 1);
1525 filter->pc++;
1526 }
1527 }
1528 filter->errmsg=CUS "missing end of string";
1529 return -1;
1530 }
1531 else if (Ustrncmp(filter->pc,CUS "text:",5)==0) /* multiline string */
1532 {
1533 filter->pc+=5;
1534 /* skip optional white space followed by hashed comment or CRLF */
1535 while (*filter->pc==' ' || *filter->pc=='\t') ++filter->pc;
1536 if (*filter->pc=='#')
1537 {
1538 if (parse_hashcomment(filter)==-1) return -1;
1539 }
1540 #ifdef RFC_EOL
1541 else if (*filter->pc=='\r' && *(filter->pc+1)=='\n')
1542 #else
1543 else if (*filter->pc=='\n')
1544 #endif
1545 {
1546 #ifdef RFC_EOL
1547 filter->pc+=2;
1548 #else
1549 ++filter->pc;
1550 #endif
1551 ++filter->line;
1552 }
1553 else
1554 {
1555 filter->errmsg=CUS "syntax error";
1556 return -1;
1557 }
1558 while (*filter->pc)
1559 {
1560 #ifdef RFC_EOL
1561 if (*filter->pc=='\r' && *(filter->pc+1)=='\n') /* end of line */
1562 #else
1563 if (*filter->pc=='\n') /* end of line */
1564 #endif
1565 {
1566 g = string_catn(g, CUS "\r\n", 2);
1567 #ifdef RFC_EOL
1568 filter->pc+=2;
1569 #else
1570 ++filter->pc;
1571 #endif
1572 ++filter->line;
1573 #ifdef RFC_EOL
1574 if (*filter->pc=='.' && *(filter->pc+1)=='\r' && *(filter->pc+2)=='\n') /* end of string */
1575 #else
1576 if (*filter->pc=='.' && *(filter->pc+1)=='\n') /* end of string */
1577 #endif
1578 {
1579 if (g)
1580 {
1581 data->character = string_from_gstring(g);
1582 data->length = g->ptr;
1583 }
1584 else
1585 data->character = US"\0";
1586 /* that way, there will be at least one character allocated */
1587
1588 #ifdef RFC_EOL
1589 filter->pc+=3;
1590 #else
1591 filter->pc+=2;
1592 #endif
1593 ++filter->line;
1594 #ifdef ENCODED_CHARACTER
1595 if (filter->require_encoded_character
1596 && string_decode(filter,data)==-1)
1597 return -1;
1598 #endif
1599 return 1;
1600 }
1601 else if (*filter->pc=='.' && *(filter->pc+1)=='.') /* remove dot stuffing */
1602 {
1603 g = string_catn(g, CUS ".", 1);
1604 filter->pc+=2;
1605 }
1606 }
1607 else /* regular character */
1608 {
1609 g = string_catn(g, filter->pc, 1);
1610 filter->pc++;
1611 }
1612 }
1613 filter->errmsg=CUS "missing end of multi line string";
1614 return -1;
1615 }
1616 else return 0;
1617 }
1618
1619
1620 /*************************************************
1621 * Parse a specific identifier *
1622 *************************************************/
1623
1624 /*
1625 Token definition:
1626 identifier = (ALPHA / "_") *(ALPHA DIGIT "_")
1627
1628 Arguments:
1629 filter points to the Sieve filter including its state
1630 id specifies identifier to match
1631
1632 Returns: 1 success
1633 0 identifier not matched
1634 */
1635
1636 static int parse_identifier(struct Sieve *filter, const uschar *id)
1637 {
1638 size_t idlen=Ustrlen(id);
1639
1640 if (strncmpic(US filter->pc,US id,idlen)==0)
1641 {
1642 uschar next=filter->pc[idlen];
1643
1644 if ((next>='A' && next<='Z') || (next>='a' && next<='z') || next=='_' || (next>='0' && next<='9')) return 0;
1645 filter->pc+=idlen;
1646 return 1;
1647 }
1648 else return 0;
1649 }
1650
1651
1652 /*************************************************
1653 * Parse a number *
1654 *************************************************/
1655
1656 /*
1657 Token definition:
1658 number = 1*DIGIT [QUANTIFIER]
1659 QUANTIFIER = "K" / "M" / "G"
1660
1661 Arguments:
1662 filter points to the Sieve filter including its state
1663 data returns value
1664
1665 Returns: 1 success
1666 -1 no string list found
1667 */
1668
1669 static int parse_number(struct Sieve *filter, unsigned long *data)
1670 {
1671 unsigned long d,u;
1672
1673 if (*filter->pc>='0' && *filter->pc<='9')
1674 {
1675 uschar *e;
1676
1677 errno=0;
1678 d=Ustrtoul(filter->pc,&e,10);
1679 if (errno==ERANGE)
1680 {
1681 filter->errmsg=CUstrerror(ERANGE);
1682 return -1;
1683 }
1684 filter->pc=e;
1685 u=1;
1686 if (*filter->pc=='K') { u=1024; ++filter->pc; }
1687 else if (*filter->pc=='M') { u=1024*1024; ++filter->pc; }
1688 else if (*filter->pc=='G') { u=1024*1024*1024; ++filter->pc; }
1689 if (d>(ULONG_MAX/u))
1690 {
1691 filter->errmsg=CUstrerror(ERANGE);
1692 return -1;
1693 }
1694 d*=u;
1695 *data=d;
1696 return 1;
1697 }
1698 else
1699 {
1700 filter->errmsg=CUS "missing number";
1701 return -1;
1702 }
1703 }
1704
1705
1706 /*************************************************
1707 * Parse a string list *
1708 *************************************************/
1709
1710 /*
1711 Grammar:
1712 string-list = "[" string *("," string) "]" / string
1713
1714 Arguments:
1715 filter points to the Sieve filter including its state
1716 data returns string list
1717
1718 Returns: 1 success
1719 -1 no string list found
1720 */
1721
1722 static int
1723 parse_stringlist(struct Sieve *filter, struct String **data)
1724 {
1725 const uschar *orig=filter->pc;
1726 int dataCapacity = 0;
1727 int dataLength = 0;
1728 struct String *d = NULL;
1729 int m;
1730
1731 if (*filter->pc=='[') /* string list */
1732 {
1733 ++filter->pc;
1734 for (;;)
1735 {
1736 if (parse_white(filter)==-1) goto error;
1737 if (dataLength+1 >= dataCapacity) /* increase buffer */
1738 {
1739 struct String *new;
1740 int newCapacity; /* Don't amalgamate with next line; some compilers grumble */
1741
1742 dataCapacity = dataCapacity ? dataCapacity * 2 : 4;
1743 new = store_get(sizeof(struct String) * dataCapacity);
1744
1745 if (d) memcpy(new,d,sizeof(struct String)*dataLength);
1746 d = new;
1747 }
1748
1749 m=parse_string(filter,&d[dataLength]);
1750 if (m==0)
1751 {
1752 if (dataLength==0) break;
1753 else
1754 {
1755 filter->errmsg=CUS "missing string";
1756 goto error;
1757 }
1758 }
1759 else if (m==-1) goto error;
1760 else ++dataLength;
1761 if (parse_white(filter)==-1) goto error;
1762 if (*filter->pc==',') ++filter->pc;
1763 else break;
1764 }
1765 if (*filter->pc==']')
1766 {
1767 d[dataLength].character=(uschar*)0;
1768 d[dataLength].length=-1;
1769 ++filter->pc;
1770 *data=d;
1771 return 1;
1772 }
1773 else
1774 {
1775 filter->errmsg=CUS "missing closing bracket";
1776 goto error;
1777 }
1778 }
1779 else /* single string */
1780 {
1781 if ((d=store_get(sizeof(struct String)*2))==(struct String*)0)
1782 {
1783 return -1;
1784 }
1785 m=parse_string(filter,&d[0]);
1786 if (m==-1)
1787 {
1788 return -1;
1789 }
1790 else if (m==0)
1791 {
1792 filter->pc=orig;
1793 return 0;
1794 }
1795 else
1796 {
1797 d[1].character=(uschar*)0;
1798 d[1].length=-1;
1799 *data=d;
1800 return 1;
1801 }
1802 }
1803 error:
1804 filter->errmsg=CUS "missing string list";
1805 return -1;
1806 }
1807
1808
1809 /*************************************************
1810 * Parse an optional address part specifier *
1811 *************************************************/
1812
1813 /*
1814 Grammar:
1815 address-part = ":localpart" / ":domain" / ":all"
1816 address-part =/ ":user" / ":detail"
1817
1818 Arguments:
1819 filter points to the Sieve filter including its state
1820 a returns address part specified
1821
1822 Returns: 1 success
1823 0 no comparator found
1824 -1 syntax error
1825 */
1826
1827 static int parse_addresspart(struct Sieve *filter, enum AddressPart *a)
1828 {
1829 #ifdef SUBADDRESS
1830 if (parse_identifier(filter,CUS ":user")==1)
1831 {
1832 if (!filter->require_subaddress)
1833 {
1834 filter->errmsg=CUS "missing previous require \"subaddress\";";
1835 return -1;
1836 }
1837 *a=ADDRPART_USER;
1838 return 1;
1839 }
1840 else if (parse_identifier(filter,CUS ":detail")==1)
1841 {
1842 if (!filter->require_subaddress)
1843 {
1844 filter->errmsg=CUS "missing previous require \"subaddress\";";
1845 return -1;
1846 }
1847 *a=ADDRPART_DETAIL;
1848 return 1;
1849 }
1850 else
1851 #endif
1852 if (parse_identifier(filter,CUS ":localpart")==1)
1853 {
1854 *a=ADDRPART_LOCALPART;
1855 return 1;
1856 }
1857 else if (parse_identifier(filter,CUS ":domain")==1)
1858 {
1859 *a=ADDRPART_DOMAIN;
1860 return 1;
1861 }
1862 else if (parse_identifier(filter,CUS ":all")==1)
1863 {
1864 *a=ADDRPART_ALL;
1865 return 1;
1866 }
1867 else return 0;
1868 }
1869
1870
1871 /*************************************************
1872 * Parse an optional comparator *
1873 *************************************************/
1874
1875 /*
1876 Grammar:
1877 comparator = ":comparator" <comparator-name: string>
1878
1879 Arguments:
1880 filter points to the Sieve filter including its state
1881 c returns comparator
1882
1883 Returns: 1 success
1884 0 no comparator found
1885 -1 incomplete comparator found
1886 */
1887
1888 static int parse_comparator(struct Sieve *filter, enum Comparator *c)
1889 {
1890 struct String comparator_name;
1891
1892 if (parse_identifier(filter,CUS ":comparator")==0) return 0;
1893 if (parse_white(filter)==-1) return -1;
1894 switch (parse_string(filter,&comparator_name))
1895 {
1896 case -1: return -1;
1897 case 0:
1898 {
1899 filter->errmsg=CUS "missing comparator";
1900 return -1;
1901 }
1902 default:
1903 {
1904 int match;
1905
1906 if (eq_asciicase(&comparator_name,&str_ioctet,0))
1907 {
1908 *c=COMP_OCTET;
1909 match=1;
1910 }
1911 else if (eq_asciicase(&comparator_name,&str_iascii_casemap,0))
1912 {
1913 *c=COMP_EN_ASCII_CASEMAP;
1914 match=1;
1915 }
1916 else if (eq_asciicase(&comparator_name,&str_enascii_casemap,0))
1917 {
1918 *c=COMP_EN_ASCII_CASEMAP;
1919 match=1;
1920 }
1921 else if (eq_asciicase(&comparator_name,&str_iascii_numeric,0))
1922 {
1923 *c=COMP_ASCII_NUMERIC;
1924 match=1;
1925 }
1926 else
1927 {
1928 filter->errmsg=CUS "invalid comparator";
1929 match=-1;
1930 }
1931 return match;
1932 }
1933 }
1934 }
1935
1936
1937 /*************************************************
1938 * Parse an optional match type *
1939 *************************************************/
1940
1941 /*
1942 Grammar:
1943 match-type = ":is" / ":contains" / ":matches"
1944
1945 Arguments:
1946 filter points to the Sieve filter including its state
1947 m returns match type
1948
1949 Returns: 1 success
1950 0 no match type found
1951 */
1952
1953 static int parse_matchtype(struct Sieve *filter, enum MatchType *m)
1954 {
1955 if (parse_identifier(filter,CUS ":is")==1)
1956 {
1957 *m=MATCH_IS;
1958 return 1;
1959 }
1960 else if (parse_identifier(filter,CUS ":contains")==1)
1961 {
1962 *m=MATCH_CONTAINS;
1963 return 1;
1964 }
1965 else if (parse_identifier(filter,CUS ":matches")==1)
1966 {
1967 *m=MATCH_MATCHES;
1968 return 1;
1969 }
1970 else return 0;
1971 }
1972
1973
1974 /*************************************************
1975 * Parse and interpret an optional test list *
1976 *************************************************/
1977
1978 /*
1979 Grammar:
1980 test-list = "(" test *("," test) ")"
1981
1982 Arguments:
1983 filter points to the Sieve filter including its state
1984 n total number of tests
1985 num_true number of passed tests
1986 exec Execute parsed statements
1987
1988 Returns: 1 success
1989 0 no test list found
1990 -1 syntax or execution error
1991 */
1992
1993 static int parse_testlist(struct Sieve *filter, int *n, int *num_true, int exec)
1994 {
1995 if (parse_white(filter)==-1) return -1;
1996 if (*filter->pc=='(')
1997 {
1998 ++filter->pc;
1999 *n=0;
2000 *num_true=0;
2001 for (;;)
2002 {
2003 int cond;
2004
2005 switch (parse_test(filter,&cond,exec))
2006 {
2007 case -1: return -1;
2008 case 0: filter->errmsg=CUS "missing test"; return -1;
2009 default: ++*n; if (cond) ++*num_true; break;
2010 }
2011 if (parse_white(filter)==-1) return -1;
2012 if (*filter->pc==',') ++filter->pc;
2013 else break;
2014 }
2015 if (*filter->pc==')')
2016 {
2017 ++filter->pc;
2018 return 1;
2019 }
2020 else
2021 {
2022 filter->errmsg=CUS "missing closing paren";
2023 return -1;
2024 }
2025 }
2026 else return 0;
2027 }
2028
2029
2030 /*************************************************
2031 * Parse and interpret an optional test *
2032 *************************************************/
2033
2034 /*
2035 Arguments:
2036 filter points to the Sieve filter including its state
2037 cond returned condition status
2038 exec Execute parsed statements
2039
2040 Returns: 1 success
2041 0 no test found
2042 -1 syntax or execution error
2043 */
2044
2045 static int parse_test(struct Sieve *filter, int *cond, int exec)
2046 {
2047 if (parse_white(filter)==-1) return -1;
2048 if (parse_identifier(filter,CUS "address"))
2049 {
2050 /*
2051 address-test = "address" { [address-part] [comparator] [match-type] }
2052 <header-list: string-list> <key-list: string-list>
2053
2054 header-list From, To, Cc, Bcc, Sender, Resent-From, Resent-To
2055 */
2056
2057 enum AddressPart addressPart=ADDRPART_ALL;
2058 enum Comparator comparator=COMP_EN_ASCII_CASEMAP;
2059 enum MatchType matchType=MATCH_IS;
2060 struct String *hdr,*h,*key,*k;
2061 int m;
2062 int ap=0,co=0,mt=0;
2063
2064 for (;;)
2065 {
2066 if (parse_white(filter)==-1) return -1;
2067 if ((m=parse_addresspart(filter,&addressPart))!=0)
2068 {
2069 if (m==-1) return -1;
2070 if (ap)
2071 {
2072 filter->errmsg=CUS "address part already specified";
2073 return -1;
2074 }
2075 else ap=1;
2076 }
2077 else if ((m=parse_comparator(filter,&comparator))!=0)
2078 {
2079 if (m==-1) return -1;
2080 if (co)
2081 {
2082 filter->errmsg=CUS "comparator already specified";
2083 return -1;
2084 }
2085 else co=1;
2086 }
2087 else if ((m=parse_matchtype(filter,&matchType))!=0)
2088 {
2089 if (m==-1) return -1;
2090 if (mt)
2091 {
2092 filter->errmsg=CUS "match type already specified";
2093 return -1;
2094 }
2095 else mt=1;
2096 }
2097 else break;
2098 }
2099 if (parse_white(filter)==-1) return -1;
2100 if ((m=parse_stringlist(filter,&hdr))!=1)
2101 {
2102 if (m==0) filter->errmsg=CUS "header string list expected";
2103 return -1;
2104 }
2105 if (parse_white(filter)==-1) return -1;
2106 if ((m=parse_stringlist(filter,&key))!=1)
2107 {
2108 if (m==0) filter->errmsg=CUS "key string list expected";
2109 return -1;
2110 }
2111 *cond=0;
2112 for (h=hdr; h->length!=-1 && !*cond; ++h)
2113 {
2114 uschar *header_value=(uschar*)0,*extracted_addr,*end_addr;
2115
2116 if
2117 (
2118 !eq_asciicase(h,&str_from,0)
2119 && !eq_asciicase(h,&str_to,0)
2120 && !eq_asciicase(h,&str_cc,0)
2121 && !eq_asciicase(h,&str_bcc,0)
2122 && !eq_asciicase(h,&str_sender,0)
2123 && !eq_asciicase(h,&str_resent_from,0)
2124 && !eq_asciicase(h,&str_resent_to,0)
2125 )
2126 {
2127 filter->errmsg=CUS "invalid header field";
2128 return -1;
2129 }
2130 if (exec)
2131 {
2132 /* We are only interested in addresses below, so no MIME decoding */
2133 header_value=expand_string(string_sprintf("$rheader_%s",quote(h)));
2134 if (header_value == NULL)
2135 {
2136 filter->errmsg=CUS "header string expansion failed";
2137 return -1;
2138 }
2139 parse_allow_group = TRUE;
2140 while (*header_value && !*cond)
2141 {
2142 uschar *error;
2143 int start, end, domain;
2144 int saveend;
2145 uschar *part=NULL;
2146
2147 end_addr = parse_find_address_end(header_value, FALSE);
2148 saveend = *end_addr;
2149 *end_addr = 0;
2150 extracted_addr = parse_extract_address(header_value, &error, &start, &end, &domain, FALSE);
2151
2152 if (extracted_addr) switch (addressPart)
2153 {
2154 case ADDRPART_ALL: part=extracted_addr; break;
2155 #ifdef SUBADDRESS
2156 case ADDRPART_USER:
2157 #endif
2158 case ADDRPART_LOCALPART: part=extracted_addr; part[domain-1]='\0'; break;
2159 case ADDRPART_DOMAIN: part=extracted_addr+domain; break;
2160 #ifdef SUBADDRESS
2161 case ADDRPART_DETAIL: part=NULL; break;
2162 #endif
2163 }
2164
2165 *end_addr = saveend;
2166 if (part)
2167 {
2168 for (k=key; k->length!=-1; ++k)
2169 {
2170 struct String partStr;
2171
2172 partStr.character=part;
2173 partStr.length=Ustrlen(part);
2174 if (extracted_addr)
2175 {
2176 *cond=compare(filter,k,&partStr,comparator,matchType);
2177 if (*cond==-1) return -1;
2178 if (*cond) break;
2179 }
2180 }
2181 }
2182 if (saveend == 0) break;
2183 header_value = end_addr + 1;
2184 }
2185 parse_allow_group = FALSE;
2186 parse_found_group = FALSE;
2187 }
2188 }
2189 return 1;
2190 }
2191 else if (parse_identifier(filter,CUS "allof"))
2192 {
2193 /*
2194 allof-test = "allof" <tests: test-list>
2195 */
2196
2197 int n,num_true;
2198
2199 switch (parse_testlist(filter,&n,&num_true,exec))
2200 {
2201 case -1: return -1;
2202 case 0: filter->errmsg=CUS "missing test list"; return -1;
2203 default: *cond=(n==num_true); return 1;
2204 }
2205 }
2206 else if (parse_identifier(filter,CUS "anyof"))
2207 {
2208 /*
2209 anyof-test = "anyof" <tests: test-list>
2210 */
2211
2212 int n,num_true;
2213
2214 switch (parse_testlist(filter,&n,&num_true,exec))
2215 {
2216 case -1: return -1;
2217 case 0: filter->errmsg=CUS "missing test list"; return -1;
2218 default: *cond=(num_true>0); return 1;
2219 }
2220 }
2221 else if (parse_identifier(filter,CUS "exists"))
2222 {
2223 /*
2224 exists-test = "exists" <header-names: string-list>
2225 */
2226
2227 struct String *hdr,*h;
2228 int m;
2229
2230 if (parse_white(filter)==-1) return -1;
2231 if ((m=parse_stringlist(filter,&hdr))!=1)
2232 {
2233 if (m==0) filter->errmsg=CUS "header string list expected";
2234 return -1;
2235 }
2236 if (exec)
2237 {
2238 *cond=1;
2239 for (h=hdr; h->length!=-1 && *cond; ++h)
2240 {
2241 uschar *header_def;
2242
2243 header_def=expand_string(string_sprintf("${if def:header_%s {true}{false}}",quote(h)));
2244 if (header_def == NULL)
2245 {
2246 filter->errmsg=CUS "header string expansion failed";
2247 return -1;
2248 }
2249 if (Ustrcmp(header_def,"false")==0) *cond=0;
2250 }
2251 }
2252 return 1;
2253 }
2254 else if (parse_identifier(filter,CUS "false"))
2255 {
2256 /*
2257 false-test = "false"
2258 */
2259
2260 *cond=0;
2261 return 1;
2262 }
2263 else if (parse_identifier(filter,CUS "header"))
2264 {
2265 /*
2266 header-test = "header" { [comparator] [match-type] }
2267 <header-names: string-list> <key-list: string-list>
2268 */
2269
2270 enum Comparator comparator=COMP_EN_ASCII_CASEMAP;
2271 enum MatchType matchType=MATCH_IS;
2272 struct String *hdr,*h,*key,*k;
2273 int m;
2274 int co=0,mt=0;
2275
2276 for (;;)
2277 {
2278 if (parse_white(filter)==-1) return -1;
2279 if ((m=parse_comparator(filter,&comparator))!=0)
2280 {
2281 if (m==-1) return -1;
2282 if (co)
2283 {
2284 filter->errmsg=CUS "comparator already specified";
2285 return -1;
2286 }
2287 else co=1;
2288 }
2289 else if ((m=parse_matchtype(filter,&matchType))!=0)
2290 {
2291 if (m==-1) return -1;
2292 if (mt)
2293 {
2294 filter->errmsg=CUS "match type already specified";
2295 return -1;
2296 }
2297 else mt=1;
2298 }
2299 else break;
2300 }
2301 if (parse_white(filter)==-1) return -1;
2302 if ((m=parse_stringlist(filter,&hdr))!=1)
2303 {
2304 if (m==0) filter->errmsg=CUS "header string list expected";
2305 return -1;
2306 }
2307 if (parse_white(filter)==-1) return -1;
2308 if ((m=parse_stringlist(filter,&key))!=1)
2309 {
2310 if (m==0) filter->errmsg=CUS "key string list expected";
2311 return -1;
2312 }
2313 *cond=0;
2314 for (h=hdr; h->length!=-1 && !*cond; ++h)
2315 {
2316 if (!is_header(h))
2317 {
2318 filter->errmsg=CUS "invalid header field";
2319 return -1;
2320 }
2321 if (exec)
2322 {
2323 struct String header_value;
2324 uschar *header_def;
2325
2326 expand_header(&header_value,h);
2327 header_def=expand_string(string_sprintf("${if def:header_%s {true}{false}}",quote(h)));
2328 if (header_value.character == NULL || header_def == NULL)
2329 {
2330 filter->errmsg=CUS "header string expansion failed";
2331 return -1;
2332 }
2333 for (k=key; k->length!=-1; ++k)
2334 {
2335 if (Ustrcmp(header_def,"true")==0)
2336 {
2337 *cond=compare(filter,k,&header_value,comparator,matchType);
2338 if (*cond==-1) return -1;
2339 if (*cond) break;
2340 }
2341 }
2342 }
2343 }
2344 return 1;
2345 }
2346 else if (parse_identifier(filter,CUS "not"))
2347 {
2348 if (parse_white(filter)==-1) return -1;
2349 switch (parse_test(filter,cond,exec))
2350 {
2351 case -1: return -1;
2352 case 0: filter->errmsg=CUS "missing test"; return -1;
2353 default: *cond=!*cond; return 1;
2354 }
2355 }
2356 else if (parse_identifier(filter,CUS "size"))
2357 {
2358 /*
2359 relop = ":over" / ":under"
2360 size-test = "size" relop <limit: number>
2361 */
2362
2363 unsigned long limit;
2364 int overNotUnder;
2365
2366 if (parse_white(filter)==-1) return -1;
2367 if (parse_identifier(filter,CUS ":over")) overNotUnder=1;
2368 else if (parse_identifier(filter,CUS ":under")) overNotUnder=0;
2369 else
2370 {
2371 filter->errmsg=CUS "missing :over or :under";
2372 return -1;
2373 }
2374 if (parse_white(filter)==-1) return -1;
2375 if (parse_number(filter,&limit)==-1) return -1;
2376 *cond=(overNotUnder ? (message_size>limit) : (message_size<limit));
2377 return 1;
2378 }
2379 else if (parse_identifier(filter,CUS "true"))
2380 {
2381 *cond=1;
2382 return 1;
2383 }
2384 else if (parse_identifier(filter,CUS "envelope"))
2385 {
2386 /*
2387 envelope-test = "envelope" { [comparator] [address-part] [match-type] }
2388 <envelope-part: string-list> <key-list: string-list>
2389
2390 envelope-part is case insensitive "from" or "to"
2391 #ifdef ENVELOPE_AUTH
2392 envelope-part =/ "auth"
2393 #endif
2394 */
2395
2396 enum Comparator comparator=COMP_EN_ASCII_CASEMAP;
2397 enum AddressPart addressPart=ADDRPART_ALL;
2398 enum MatchType matchType=MATCH_IS;
2399 struct String *env,*e,*key,*k;
2400 int m;
2401 int co=0,ap=0,mt=0;
2402
2403 if (!filter->require_envelope)
2404 {
2405 filter->errmsg=CUS "missing previous require \"envelope\";";
2406 return -1;
2407 }
2408 for (;;)
2409 {
2410 if (parse_white(filter)==-1) return -1;
2411 if ((m=parse_comparator(filter,&comparator))!=0)
2412 {
2413 if (m==-1) return -1;
2414 if (co)
2415 {
2416 filter->errmsg=CUS "comparator already specified";
2417 return -1;
2418 }
2419 else co=1;
2420 }
2421 else if ((m=parse_addresspart(filter,&addressPart))!=0)
2422 {
2423 if (m==-1) return -1;
2424 if (ap)
2425 {
2426 filter->errmsg=CUS "address part already specified";
2427 return -1;
2428 }
2429 else ap=1;
2430 }
2431 else if ((m=parse_matchtype(filter,&matchType))!=0)
2432 {
2433 if (m==-1) return -1;
2434 if (mt)
2435 {
2436 filter->errmsg=CUS "match type already specified";
2437 return -1;
2438 }
2439 else mt=1;
2440 }
2441 else break;
2442 }
2443 if (parse_white(filter)==-1) return -1;
2444 if ((m=parse_stringlist(filter,&env))!=1)
2445 {
2446 if (m==0) filter->errmsg=CUS "envelope string list expected";
2447 return -1;
2448 }
2449 if (parse_white(filter)==-1) return -1;
2450 if ((m=parse_stringlist(filter,&key))!=1)
2451 {
2452 if (m==0) filter->errmsg=CUS "key string list expected";
2453 return -1;
2454 }
2455 *cond=0;
2456 for (e=env; e->length!=-1 && !*cond; ++e)
2457 {
2458 const uschar *envelopeExpr=CUS 0;
2459 uschar *envelope=US 0;
2460
2461 if (eq_asciicase(e,&str_from,0))
2462 {
2463 switch (addressPart)
2464 {
2465 case ADDRPART_ALL: envelopeExpr=CUS "$sender_address"; break;
2466 #ifdef SUBADDRESS
2467 case ADDRPART_USER:
2468 #endif
2469 case ADDRPART_LOCALPART: envelopeExpr=CUS "${local_part:$sender_address}"; break;
2470 case ADDRPART_DOMAIN: envelopeExpr=CUS "${domain:$sender_address}"; break;
2471 #ifdef SUBADDRESS
2472 case ADDRPART_DETAIL: envelopeExpr=CUS 0; break;
2473 #endif
2474 }
2475 }
2476 else if (eq_asciicase(e,&str_to,0))
2477 {
2478 switch (addressPart)
2479 {
2480 case ADDRPART_ALL: envelopeExpr=CUS "$local_part_prefix$local_part$local_part_suffix@$domain"; break;
2481 #ifdef SUBADDRESS
2482 case ADDRPART_USER: envelopeExpr=filter->useraddress; break;
2483 case ADDRPART_DETAIL: envelopeExpr=filter->subaddress; break;
2484 #endif
2485 case ADDRPART_LOCALPART: envelopeExpr=CUS "$local_part_prefix$local_part$local_part_suffix"; break;
2486 case ADDRPART_DOMAIN: envelopeExpr=CUS "$domain"; break;
2487 }
2488 }
2489 #ifdef ENVELOPE_AUTH
2490 else if (eq_asciicase(e,&str_auth,0))
2491 {
2492 switch (addressPart)
2493 {
2494 case ADDRPART_ALL: envelopeExpr=CUS "$authenticated_sender"; break;
2495 #ifdef SUBADDRESS
2496 case ADDRPART_USER:
2497 #endif
2498 case ADDRPART_LOCALPART: envelopeExpr=CUS "${local_part:$authenticated_sender}"; break;
2499 case ADDRPART_DOMAIN: envelopeExpr=CUS "${domain:$authenticated_sender}"; break;
2500 #ifdef SUBADDRESS
2501 case ADDRPART_DETAIL: envelopeExpr=CUS 0; break;
2502 #endif
2503 }
2504 }
2505 #endif
2506 else
2507 {
2508 filter->errmsg=CUS "invalid envelope string";
2509 return -1;
2510 }
2511 if (exec && envelopeExpr)
2512 {
2513 if ((envelope=expand_string(US envelopeExpr)) == NULL)
2514 {
2515 filter->errmsg=CUS "header string expansion failed";
2516 return -1;
2517 }
2518 for (k=key; k->length!=-1; ++k)
2519 {
2520 struct String envelopeStr;
2521
2522 envelopeStr.character=envelope;
2523 envelopeStr.length=Ustrlen(envelope);
2524 *cond=compare(filter,k,&envelopeStr,comparator,matchType);
2525 if (*cond==-1) return -1;
2526 if (*cond) break;
2527 }
2528 }
2529 }
2530 return 1;
2531 }
2532 #ifdef ENOTIFY
2533 else if (parse_identifier(filter,CUS "valid_notify_method"))
2534 {
2535 /*
2536 valid_notify_method = "valid_notify_method"
2537 <notification-uris: string-list>
2538 */
2539
2540 struct String *uris,*u;
2541 int m;
2542
2543 if (!filter->require_enotify)
2544 {
2545 filter->errmsg=CUS "missing previous require \"enotify\";";
2546 return -1;
2547 }
2548 if (parse_white(filter)==-1) return -1;
2549 if ((m=parse_stringlist(filter,&uris))!=1)
2550 {
2551 if (m==0) filter->errmsg=CUS "URI string list expected";
2552 return -1;
2553 }
2554 if (exec)
2555 {
2556 *cond=1;
2557 for (u=uris; u->length!=-1 && *cond; ++u)
2558 {
2559 string_item *recipient;
2560 struct String header,subject,body;
2561
2562 recipient=NULL;
2563 header.length=-1;
2564 header.character=(uschar*)0;
2565 subject.length=-1;
2566 subject.character=(uschar*)0;
2567 body.length=-1;
2568 body.character=(uschar*)0;
2569 if (parse_mailto_uri(filter,u->character,&recipient,&header,&subject,&body)!=1)
2570 *cond=0;
2571 }
2572 }
2573 return 1;
2574 }
2575 else if (parse_identifier(filter,CUS "notify_method_capability"))
2576 {
2577 /*
2578 notify_method_capability = "notify_method_capability" [COMPARATOR] [MATCH-TYPE]
2579 <notification-uri: string>
2580 <notification-capability: string>
2581 <key-list: string-list>
2582 */
2583
2584 int m;
2585 int co=0,mt=0;
2586
2587 enum Comparator comparator=COMP_EN_ASCII_CASEMAP;
2588 enum MatchType matchType=MATCH_IS;
2589 struct String uri,capa,*keys,*k;
2590
2591 if (!filter->require_enotify)
2592 {
2593 filter->errmsg=CUS "missing previous require \"enotify\";";
2594 return -1;
2595 }
2596 for (;;)
2597 {
2598 if (parse_white(filter)==-1) return -1;
2599 if ((m=parse_comparator(filter,&comparator))!=0)
2600 {
2601 if (m==-1) return -1;
2602 if (co)
2603 {
2604 filter->errmsg=CUS "comparator already specified";
2605 return -1;
2606 }
2607 else co=1;
2608 }
2609 else if ((m=parse_matchtype(filter,&matchType))!=0)
2610 {
2611 if (m==-1) return -1;
2612 if (mt)
2613 {
2614 filter->errmsg=CUS "match type already specified";
2615 return -1;
2616 }
2617 else mt=1;
2618 }
2619 else break;
2620 }
2621 if ((m=parse_string(filter,&uri))!=1)
2622 {
2623 if (m==0) filter->errmsg=CUS "missing notification URI string";
2624 return -1;
2625 }
2626 if (parse_white(filter)==-1) return -1;
2627 if ((m=parse_string(filter,&capa))!=1)
2628 {
2629 if (m==0) filter->errmsg=CUS "missing notification capability string";
2630 return -1;
2631 }
2632 if (parse_white(filter)==-1) return -1;
2633 if ((m=parse_stringlist(filter,&keys))!=1)
2634 {
2635 if (m==0) filter->errmsg=CUS "missing key string list";
2636 return -1;
2637 }
2638 if (exec)
2639 {
2640 string_item *recipient;
2641 struct String header,subject,body;
2642
2643 *cond=0;
2644 recipient=NULL;
2645 header.length=-1;
2646 header.character=(uschar*)0;
2647 subject.length=-1;
2648 subject.character=(uschar*)0;
2649 body.length=-1;
2650 body.character=(uschar*)0;
2651 if (parse_mailto_uri(filter,uri.character,&recipient,&header,&subject,&body)==1)
2652 {
2653 if (eq_asciicase(&capa,&str_online,0)==1)
2654 for (k=keys; k->length!=-1; ++k)
2655 {
2656 *cond=compare(filter,k,&str_maybe,comparator,matchType);
2657 if (*cond==-1) return -1;
2658 if (*cond) break;
2659 }
2660 }
2661 }
2662 return 1;
2663 }
2664 #endif
2665 else return 0;
2666 }
2667
2668
2669 /*************************************************
2670 * Parse and interpret an optional block *
2671 *************************************************/
2672
2673 /*
2674 Arguments:
2675 filter points to the Sieve filter including its state
2676 exec Execute parsed statements
2677 generated where to hang newly-generated addresses
2678
2679 Returns: 2 success by stop
2680 1 other success
2681 0 no block command found
2682 -1 syntax or execution error
2683 */
2684
2685 static int parse_block(struct Sieve *filter, int exec,
2686 address_item **generated)
2687 {
2688 int r;
2689
2690 if (parse_white(filter)==-1) return -1;
2691 if (*filter->pc=='{')
2692 {
2693 ++filter->pc;
2694 if ((r=parse_commands(filter,exec,generated))==-1 || r==2) return r;
2695 if (*filter->pc=='}')
2696 {
2697 ++filter->pc;
2698 return 1;
2699 }
2700 else
2701 {
2702 filter->errmsg=CUS "expecting command or closing brace";
2703 return -1;
2704 }
2705 }
2706 else return 0;
2707 }
2708
2709
2710 /*************************************************
2711 * Match a semicolon *
2712 *************************************************/
2713
2714 /*
2715 Arguments:
2716 filter points to the Sieve filter including its state
2717
2718 Returns: 1 success
2719 -1 syntax error
2720 */
2721
2722 static int parse_semicolon(struct Sieve *filter)
2723 {
2724 if (parse_white(filter)==-1) return -1;
2725 if (*filter->pc==';')
2726 {
2727 ++filter->pc;
2728 return 1;
2729 }
2730 else
2731 {
2732 filter->errmsg=CUS "missing semicolon";
2733 return -1;
2734 }
2735 }
2736
2737
2738 /*************************************************
2739 * Parse and interpret a Sieve command *
2740 *************************************************/
2741
2742 /*
2743 Arguments:
2744 filter points to the Sieve filter including its state
2745 exec Execute parsed statements
2746 generated where to hang newly-generated addresses
2747
2748 Returns: 2 success by stop
2749 1 other success
2750 -1 syntax or execution error
2751 */
2752 static int
2753 parse_commands(struct Sieve *filter, int exec, address_item **generated)
2754 {
2755 while (*filter->pc)
2756 {
2757 if (parse_white(filter)==-1) return -1;
2758 if (parse_identifier(filter,CUS "if"))
2759 {
2760 /*
2761 if-command = "if" test block *( "elsif" test block ) [ else block ]
2762 */
2763
2764 int cond,m,unsuccessful;
2765
2766 /* test block */
2767 if (parse_white(filter)==-1) return -1;
2768 if ((m=parse_test(filter,&cond,exec))==-1) return -1;
2769 if (m==0)
2770 {
2771 filter->errmsg=CUS "missing test";
2772 return -1;
2773 }
2774 if ((filter_test != FTEST_NONE && debug_selector != 0) ||
2775 (debug_selector & D_filter) != 0)
2776 {
2777 if (exec) debug_printf("if %s\n",cond?"true":"false");
2778 }
2779 m=parse_block(filter,exec ? cond : 0, generated);
2780 if (m==-1 || m==2) return m;
2781 if (m==0)
2782 {
2783 filter->errmsg=CUS "missing block";
2784 return -1;
2785 }
2786 unsuccessful = !cond;
2787 for (;;) /* elsif test block */
2788 {
2789 if (parse_white(filter)==-1) return -1;
2790 if (parse_identifier(filter,CUS "elsif"))
2791 {
2792 if (parse_white(filter)==-1) return -1;
2793 m=parse_test(filter,&cond,exec && unsuccessful);
2794 if (m==-1 || m==2) return m;
2795 if (m==0)
2796 {
2797 filter->errmsg=CUS "missing test";
2798 return -1;
2799 }
2800 if ((filter_test != FTEST_NONE && debug_selector != 0) ||
2801 (debug_selector & D_filter) != 0)
2802 {
2803 if (exec) debug_printf("elsif %s\n",cond?"true":"false");
2804 }
2805 m=parse_block(filter,exec && unsuccessful ? cond : 0, generated);
2806 if (m==-1 || m==2) return m;
2807 if (m==0)
2808 {
2809 filter->errmsg=CUS "missing block";
2810 return -1;
2811 }
2812 if (exec && unsuccessful && cond) unsuccessful = 0;
2813 }
2814 else break;
2815 }
2816 /* else block */
2817 if (parse_white(filter)==-1) return -1;
2818 if (parse_identifier(filter,CUS "else"))
2819 {
2820 m=parse_block(filter,exec && unsuccessful, generated);
2821 if (m==-1 || m==2) return m;
2822 if (m==0)
2823 {
2824 filter->errmsg=CUS "missing block";
2825 return -1;
2826 }
2827 }
2828 }
2829 else if (parse_identifier(filter,CUS "stop"))
2830 {
2831 /*
2832 stop-command = "stop" { stop-options } ";"
2833 stop-options =
2834 */
2835
2836 if (parse_semicolon(filter)==-1) return -1;
2837 if (exec)
2838 {
2839 filter->pc+=Ustrlen(filter->pc);
2840 return 2;
2841 }
2842 }
2843 else if (parse_identifier(filter,CUS "keep"))
2844 {
2845 /*
2846 keep-command = "keep" { keep-options } ";"
2847 keep-options =
2848 */
2849
2850 if (parse_semicolon(filter)==-1) return -1;
2851 if (exec)
2852 {
2853 add_addr(generated,US"inbox",1,0,0,0);
2854 filter->keep = 0;
2855 }
2856 }
2857 else if (parse_identifier(filter,CUS "discard"))
2858 {
2859 /*
2860 discard-command = "discard" { discard-options } ";"
2861 discard-options =
2862 */
2863
2864 if (parse_semicolon(filter)==-1) return -1;
2865 if (exec) filter->keep=0;
2866 }
2867 else if (parse_identifier(filter,CUS "redirect"))
2868 {
2869 /*
2870 redirect-command = "redirect" redirect-options "string" ";"
2871 redirect-options =
2872 redirect-options =) ":copy"
2873 */
2874
2875 struct String recipient;
2876 int m;
2877 int copy=0;
2878
2879 for (;;)
2880 {
2881 if (parse_white(filter)==-1) return -1;
2882 if (parse_identifier(filter,CUS ":copy")==1)
2883 {
2884 if (!filter->require_copy)
2885 {
2886 filter->errmsg=CUS "missing previous require \"copy\";";
2887 return -1;
2888 }
2889 copy=1;
2890 }
2891 else break;
2892 }
2893 if (parse_white(filter)==-1) return -1;
2894 if ((m=parse_string(filter,&recipient))!=1)
2895 {
2896 if (m==0) filter->errmsg=CUS "missing redirect recipient string";
2897 return -1;
2898 }
2899 if (strchr(CCS recipient.character,'@')==(char*)0)
2900 {
2901 filter->errmsg=CUS "unqualified recipient address";
2902 return -1;
2903 }
2904 if (exec)
2905 {
2906 add_addr(generated,recipient.character,0,0,0,0);
2907 if (!copy) filter->keep = 0;
2908 }
2909 if (parse_semicolon(filter)==-1) return -1;
2910 }
2911 else if (parse_identifier(filter,CUS "fileinto"))
2912 {
2913 /*
2914 fileinto-command = "fileinto" { fileinto-options } string ";"
2915 fileinto-options =
2916 fileinto-options =) [ ":copy" ]
2917 */
2918
2919 struct String folder;
2920 uschar *s;
2921 int m;
2922 unsigned long maxage, maxmessages, maxstorage;
2923 int copy=0;
2924
2925 maxage = maxmessages = maxstorage = 0;
2926 if (!filter->require_fileinto)
2927 {
2928 filter->errmsg=CUS "missing previous require \"fileinto\";";
2929 return -1;
2930 }
2931 for (;;)
2932 {
2933 if (parse_white(filter)==-1) return -1;
2934 if (parse_identifier(filter,CUS ":copy")==1)
2935 {
2936 if (!filter->require_copy)
2937 {
2938 filter->errmsg=CUS "missing previous require \"copy\";";
2939 return -1;
2940 }
2941 copy=1;
2942 }
2943 else break;
2944 }
2945 if (parse_white(filter)==-1) return -1;
2946 if ((m=parse_string(filter,&folder))!=1)
2947 {
2948 if (m==0) filter->errmsg=CUS "missing fileinto folder string";
2949 return -1;
2950 }
2951 m=0; s=folder.character;
2952 if (folder.length==0) m=1;
2953 if (Ustrcmp(s,"..")==0 || Ustrncmp(s,"../",3)==0) m=1;
2954 else while (*s)
2955 {
2956 if (Ustrcmp(s,"/..")==0 || Ustrncmp(s,"/../",4)==0) { m=1; break; }
2957 ++s;
2958 }
2959 if (m)
2960 {
2961 filter->errmsg=CUS "invalid folder";
2962 return -1;
2963 }
2964 if (exec)
2965 {
2966 add_addr(generated, folder.character, 1, maxage, maxmessages, maxstorage);
2967 if (!copy) filter->keep = 0;
2968 }
2969 if (parse_semicolon(filter)==-1) return -1;
2970 }
2971 #ifdef ENOTIFY
2972 else if (parse_identifier(filter,CUS "notify"))
2973 {
2974 /*
2975 notify-command = "notify" { notify-options } <method: string> ";"
2976 notify-options = [":from" string]
2977 [":importance" <"1" / "2" / "3">]
2978 [":options" 1*(string-list / number)]
2979 [":message" string]
2980 */
2981
2982 int m;
2983 struct String from;
2984 struct String importance;
2985 struct String message;
2986 struct String method;
2987 struct Notification *already;
2988 string_item *recipient;
2989 struct String header;
2990 struct String subject;
2991 struct String body;
2992 uschar *envelope_from;
2993 struct String auto_submitted_value;
2994 uschar *auto_submitted_def;
2995
2996 if (!filter->require_enotify)
2997 {
2998 filter->errmsg=CUS "missing previous require \"enotify\";";
2999 return -1;
3000 }
3001 from.character=(uschar*)0;
3002 from.length=-1;
3003 importance.character=(uschar*)0;
3004 importance.length=-1;
3005 message.character=(uschar*)0;
3006 message.length=-1;
3007 recipient=NULL;
3008 header.length=-1;
3009 header.character=(uschar*)0;
3010 subject.length=-1;
3011 subject.character=(uschar*)0;
3012 body.length=-1;
3013 body.character=(uschar*)0;
3014 envelope_from=(sender_address && sender_address[0]) ? expand_string(US"$local_part_prefix$local_part$local_part_suffix@$domain") : US "";
3015 for (;;)
3016 {
3017 if (parse_white(filter)==-1) return -1;
3018 if (parse_identifier(filter,CUS ":from")==1)
3019 {
3020 if (parse_white(filter)==-1) return -1;
3021 if ((m=parse_string(filter,&from))!=1)
3022 {
3023 if (m==0) filter->errmsg=CUS "from string expected";
3024 return -1;
3025 }
3026 }
3027 else if (parse_identifier(filter,CUS ":importance")==1)
3028 {
3029 if (parse_white(filter)==-1) return -1;
3030 if ((m=parse_string(filter,&importance))!=1)
3031 {
3032 if (m==0) filter->errmsg=CUS "importance string expected";
3033 return -1;
3034 }
3035 if (importance.length!=1 || importance.character[0]<'1' || importance.character[0]>'3')
3036 {
3037 filter->errmsg=CUS "invalid importance";
3038 return -1;
3039 }
3040 }
3041 else if (parse_identifier(filter,CUS ":options")==1)
3042 {
3043 if (parse_white(filter)==-1) return -1;
3044 }
3045 else if (parse_identifier(filter,CUS ":message")==1)
3046 {
3047 if (parse_white(filter)==-1) return -1;
3048 if ((m=parse_string(filter,&message))!=1)
3049 {
3050 if (m==0) filter->errmsg=CUS "message string expected";
3051 return -1;
3052 }
3053 }
3054 else break;
3055 }
3056 if (parse_white(filter)==-1) return -1;
3057 if ((m=parse_string(filter,&method))!=1)
3058 {
3059 if (m==0) filter->errmsg=CUS "missing method string";
3060 return -1;
3061 }
3062 if (parse_semicolon(filter)==-1) return -1;
3063 if (parse_mailto_uri(filter,method.character,&recipient,&header,&subject,&body)!=1)
3064 return -1;
3065 if (exec)
3066 {
3067 if (message.length==-1) message=subject;
3068 if (message.length==-1) expand_header(&message,&str_subject);
3069 expand_header(&auto_submitted_value,&str_auto_submitted);
3070 auto_submitted_def=expand_string(string_sprintf("${if def:header_auto-submitted {true}{false}}"));
3071 if (auto_submitted_value.character == NULL || auto_submitted_def == NULL)
3072 {
3073 filter->errmsg=CUS "header string expansion failed";
3074 return -1;
3075 }
3076 if (Ustrcmp(auto_submitted_def,"true")!=0 || Ustrcmp(auto_submitted_value.character,"no")==0)
3077 {
3078 for (already=filter->notified; already; already=already->next)
3079 {
3080 if (already->method.length==method.length
3081 && (method.length==-1 || Ustrcmp(already->method.character,method.character)==0)
3082 && already->importance.length==importance.length
3083 && (importance.length==-1 || Ustrcmp(already->importance.character,importance.character)==0)
3084 && already->message.length==message.length
3085 && (message.length==-1 || Ustrcmp(already->message.character,message.character)==0))
3086 break;
3087 }
3088 if (already==(struct Notification*)0)
3089 /* New notification, process it */
3090 {
3091 struct Notification *sent;
3092 sent=store_get(sizeof(struct Notification));
3093 sent->method=method;
3094 sent->importance=importance;
3095 sent->message=message;
3096 sent->next=filter->notified;
3097 filter->notified=sent;
3098 #ifndef COMPILE_SYNTAX_CHECKER
3099 if (filter_test == FTEST_NONE)
3100 {
3101 string_item *p;
3102 int pid,fd;
3103
3104 if ((pid = child_open_exim2(&fd,envelope_from,envelope_from))>=1)
3105 {
3106 FILE *f;
3107 uschar *buffer;
3108 int buffer_capacity;
3109
3110 f = fdopen(fd, "wb");
3111 fprintf(f,"From: %s\n",from.length==-1 ? expand_string(US"$local_part_prefix$local_part$local_part_suffix@$domain") : from.character);
3112 for (p=recipient; p; p=p->next) fprintf(f,"To: %s\n",p->text);
3113 fprintf(f,"Auto-Submitted: auto-notified; %s\n",filter->enotify_mailto_owner);
3114 if (header.length>0) fprintf(f,"%s",header.character);
3115 if (message.length==-1)
3116 {
3117 message.character=US"Notification";
3118 message.length=Ustrlen(message.character);
3119 }
3120 /* Allocation is larger than necessary, but enough even for split MIME words */
3121 buffer_capacity=32+4*message.length;
3122 buffer=store_get(buffer_capacity);
3123 if (message.length!=-1) fprintf(f,"Subject: %s\n",parse_quote_2047(message.character, message.length, US"utf-8", buffer, buffer_capacity, TRUE));
3124 fprintf(f,"\n");
3125 if (body.length>0) fprintf(f,"%s\n",body.character);
3126 fflush(f);
3127 (void)fclose(f);
3128 (void)child_close(pid, 0);
3129 }
3130 }
3131 if ((filter_test != FTEST_NONE && debug_selector != 0) || (debug_selector & D_filter) != 0)
3132 {
3133 debug_printf("Notification to `%s': '%s'.\n",method.character,message.length!=-1 ? message.character : CUS "");
3134 }
3135 #endif
3136 }
3137 else
3138 {
3139 if ((filter_test != FTEST_NONE && debug_selector != 0) || (debug_selector & D_filter) != 0)
3140 {
3141 debug_printf("Repeated notification to `%s' ignored.\n",method.character);
3142 }
3143 }
3144 }
3145 else
3146 {
3147 if ((filter_test != FTEST_NONE && debug_selector != 0) || (debug_selector & D_filter) != 0)
3148 {
3149 debug_printf("Ignoring notification, triggering message contains Auto-submitted: field.\n");
3150 }
3151 }
3152 }
3153 }
3154 #endif
3155 #ifdef VACATION
3156 else if (parse_identifier(filter,CUS "vacation"))
3157 {
3158 /*
3159 vacation-command = "vacation" { vacation-options } <reason: string> ";"
3160 vacation-options = [":days" number]
3161 [":subject" string]
3162 [":from" string]
3163 [":addresses" string-list]
3164 [":mime"]
3165 [":handle" string]
3166 */
3167
3168 int m;
3169 unsigned long days;
3170 struct String subject;
3171 struct String from;
3172 struct String *addresses;
3173 int reason_is_mime;
3174 string_item *aliases;
3175 struct String handle;
3176 struct String reason;
3177
3178 if (!filter->require_vacation)
3179 {
3180 filter->errmsg=CUS "missing previous require \"vacation\";";
3181 return -1;
3182 }
3183 if (exec)
3184 {
3185 if (filter->vacation_ran)
3186 {
3187 filter->errmsg=CUS "trying to execute vacation more than once";
3188 return -1;
3189 }
3190 filter->vacation_ran=1;
3191 }
3192 days=VACATION_MIN_DAYS>7 ? VACATION_MIN_DAYS : 7;
3193 subject.character=(uschar*)0;
3194 subject.length=-1;
3195 from.character=(uschar*)0;
3196 from.length=-1;
3197 addresses=(struct String*)0;
3198 aliases=NULL;
3199 reason_is_mime=0;
3200 handle.character=(uschar*)0;
3201 handle.length=-1;
3202 for (;;)
3203 {
3204 if (parse_white(filter)==-1) return -1;
3205 if (parse_identifier(filter,CUS ":days")==1)
3206 {
3207 if (parse_white(filter)==-1) return -1;
3208 if (parse_number(filter,&days)==-1) return -1;
3209 if (days<VACATION_MIN_DAYS) days=VACATION_MIN_DAYS;
3210 else if (days>VACATION_MAX_DAYS) days=VACATION_MAX_DAYS;
3211 }
3212 else if (parse_identifier(filter,CUS ":subject")==1)
3213 {
3214 if (parse_white(filter)==-1) return -1;
3215 if ((m=parse_string(filter,&subject))!=1)
3216 {
3217 if (m==0) filter->errmsg=CUS "subject string expected";
3218 return -1;
3219 }
3220 }
3221 else if (parse_identifier(filter,CUS ":from")==1)
3222 {
3223 if (parse_white(filter)==-1) return -1;
3224 if ((m=parse_string(filter,&from))!=1)
3225 {
3226 if (m==0) filter->errmsg=CUS "from string expected";
3227 return -1;
3228 }
3229 if (check_mail_address(filter,&from)!=1)
3230 return -1;
3231 }
3232 else if (parse_identifier(filter,CUS ":addresses")==1)
3233 {
3234 struct String *a;
3235
3236 if (parse_white(filter)==-1) return -1;
3237 if ((m=parse_stringlist(filter,&addresses))!=1)
3238 {
3239 if (m==0) filter->errmsg=CUS "addresses string list expected";
3240 return -1;
3241 }
3242 for (a=addresses; a->length!=-1; ++a)
3243 {
3244 string_item *new;
3245
3246 new=store_get(sizeof(string_item));
3247 new->text=store_get(a->length+1);
3248 if (a->length) memcpy(new->text,a->character,a->length);
3249 new->text[a->length]='\0';
3250 new->next=aliases;
3251 aliases=new;
3252 }
3253 }
3254 else if (parse_identifier(filter,CUS ":mime")==1)
3255 reason_is_mime=1;
3256 else if (parse_identifier(filter,CUS ":handle")==1)
3257 {
3258 if (parse_white(filter)==-1) return -1;
3259 if ((m=parse_string(filter,&from))!=1)
3260 {
3261 if (m==0) filter->errmsg=CUS "handle string expected";
3262 return -1;
3263 }
3264 }
3265 else break;
3266 }
3267 if (parse_white(filter)==-1) return -1;
3268 if ((m=parse_string(filter,&reason))!=1)
3269 {
3270 if (m==0) filter->errmsg=CUS "missing reason string";
3271 return -1;
3272 }
3273 if (reason_is_mime)
3274 {
3275 uschar *s,*end;
3276
3277 for (s=reason.character,end=reason.character+reason.length; s<end && (*s&0x80)==0; ++s);
3278 if (s<end)
3279 {
3280 filter->errmsg=CUS "MIME reason string contains 8bit text";
3281 return -1;
3282 }
3283 }
3284 if (parse_semicolon(filter)==-1) return -1;
3285
3286 if (exec)
3287 {
3288 address_item *addr;
3289 int start;
3290 uschar *buffer;
3291 int buffer_capacity;
3292 md5 base;
3293 uschar digest[16];
3294 uschar hexdigest[33];
3295 int i;
3296 gstring * once;
3297
3298 if (filter_personal(aliases,TRUE))
3299 {
3300 if (filter_test == FTEST_NONE)
3301 {
3302 /* ensure oncelog directory exists; failure will be detected later */
3303
3304 (void)directory_make(NULL, filter->vacation_directory, 0700, FALSE);
3305 }
3306 /* build oncelog filename */
3307
3308 md5_start(&base);
3309
3310 if (handle.length==-1)
3311 {
3312 gstring * key = NULL;
3313 if (subject.length!=-1) key =string_catn(key, subject.character, subject.length);
3314 if (from.length!=-1) key = string_catn(key, from.character, from.length);
3315 key = string_catn(key, reason_is_mime?US"1":US"0", 1);
3316 key = string_catn(key, reason.character, reason.length);
3317 md5_end(&base, key->s, key->ptr, digest);
3318 }
3319 else
3320 md5_end(&base, handle.character, handle.length, digest);
3321
3322 for (i = 0; i < 16; i++) sprintf(CS (hexdigest+2*i), "%02X", digest[i]);
3323
3324 if ((filter_test != FTEST_NONE && debug_selector != 0) || (debug_selector & D_filter) != 0)
3325 debug_printf("Sieve: mail was personal, vacation file basename: %s\n", hexdigest);
3326
3327 if (filter_test == FTEST_NONE)
3328 {
3329 once = string_cat (NULL, filter->vacation_directory);
3330 once = string_catn(once, US"/", 1);
3331 once = string_catn(once, hexdigest, 33);
3332
3333 /* process subject */
3334
3335 if (subject.length==-1)
3336 {
3337 uschar *subject_def;
3338
3339 subject_def=expand_string(US"${if def:header_subject {true}{false}}");
3340 if (Ustrcmp(subject_def,"true")==0)
3341 {
3342 gstring * g = string_catn(NULL, US"Auto: ", 6);
3343
3344 expand_header(&subject,&str_subject);
3345 g = string_catn(g, subject.character, subject.length);
3346 subject.character = string_from_gstring(g);
3347 subject.length = g->ptr;
3348 }
3349 else
3350 {
3351 subject.character=US"Automated reply";
3352 subject.length=Ustrlen(subject.character);
3353 }
3354 }
3355
3356 /* add address to list of generated addresses */
3357
3358 addr = deliver_make_addr(string_sprintf(">%.256s", sender_address), FALSE);
3359 setflag(addr, af_pfr);
3360 addr->prop.ignore_error = TRUE;
3361 addr->next = *generated;
3362 *generated = addr;
3363 addr->reply = store_get(sizeof(reply_item));
3364 memset(addr->reply,0,sizeof(reply_item)); /* XXX */
3365 addr->reply->to = string_copy(sender_address);
3366 if (from.length==-1)
3367 addr->reply->from = expand_string(US"$local_part@$domain");
3368 else
3369 addr->reply->from = from.character;
3370 /* Allocation is larger than necessary, but enough even for split MIME words */
3371 buffer_capacity=32+4*subject.length;
3372 buffer=store_get(buffer_capacity);
3373 /* deconst cast safe as we pass in a non-const item */
3374 addr->reply->subject = US parse_quote_2047(subject.character, subject.length, US"utf-8", buffer, buffer_capacity, TRUE);
3375 addr->reply->oncelog = string_from_gstring(once);
3376 addr->reply->once_repeat=days*86400;
3377
3378 /* build body and MIME headers */
3379
3380 if (reason_is_mime)
3381 {
3382 uschar *mime_body,*reason_end;
3383 static const uschar nlnl[]="\r\n\r\n";
3384 gstring * g;
3385
3386 for
3387 (
3388 mime_body=reason.character,reason_end=reason.character+reason.length;
3389 mime_body<(reason_end-(sizeof(nlnl)-1)) && memcmp(mime_body,nlnl,(sizeof(nlnl)-1));
3390 ++mime_body
3391 );
3392
3393 addr->reply->headers = string_copyn(reason.character, mime_body-reason.character);
3394
3395 if (mime_body+(sizeof(nlnl)-1)<reason_end) mime_body+=(sizeof(nlnl)-1);
3396 else mime_body=reason_end-1;
3397 addr->reply->text = string_copyn(mime_body, reason_end-mime_body);
3398 }
3399 else
3400 {
3401 struct String qp = { .character = NULL, .length = 0 }; /* Keep compiler happy (PH) */
3402
3403 start = reason.length;
3404 addr->reply->headers = US"MIME-Version: 1.0\n"
3405 "Content-Type: text/plain;\n"
3406 "\tcharset=\"utf-8\"\n"
3407 "Content-Transfer-Encoding: quoted-printable";
3408 addr->reply->text = quoted_printable_encode(&reason,&qp)->character;
3409 }
3410 }
3411 }
3412 else if ((filter_test != FTEST_NONE && debug_selector != 0) || (debug_selector & D_filter) != 0)
3413 debug_printf("Sieve: mail was not personal, vacation would ignore it\n");
3414 }
3415 }
3416 else break;
3417 #endif
3418 }
3419 return 1;
3420 }
3421
3422
3423 /*************************************************
3424 * Parse and interpret a sieve filter *
3425 *************************************************/
3426
3427 /*
3428 Arguments:
3429 filter points to the Sieve filter including its state
3430 exec Execute parsed statements
3431 generated where to hang newly-generated addresses
3432
3433 Returns: 1 success
3434 -1 syntax or execution error
3435 */
3436
3437 static int
3438 parse_start(struct Sieve *filter, int exec, address_item **generated)
3439 {
3440 filter->pc=filter->filter;
3441 filter->line=1;
3442 filter->keep=1;
3443 filter->require_envelope=0;
3444 filter->require_fileinto=0;
3445 #ifdef ENCODED_CHARACTER
3446 filter->require_encoded_character=0;
3447 #endif
3448 #ifdef ENVELOPE_AUTH
3449 filter->require_envelope_auth=0;
3450 #endif
3451 #ifdef ENOTIFY
3452 filter->require_enotify=0;
3453 filter->notified=(struct Notification*)0;
3454 #endif
3455 #ifdef SUBADDRESS
3456 filter->require_subaddress=0;
3457 #endif
3458 #ifdef VACATION
3459 filter->require_vacation=0;
3460 filter->vacation_ran=0;
3461 #endif
3462 filter->require_copy=0;
3463 filter->require_iascii_numeric=0;
3464
3465 if (parse_white(filter)==-1) return -1;
3466
3467 if (exec && filter->vacation_directory != NULL && filter_test == FTEST_NONE)
3468 {
3469 DIR *oncelogdir;
3470 struct dirent *oncelog;
3471 struct stat properties;
3472 time_t now;
3473
3474 /* clean up old vacation log databases */
3475
3476 oncelogdir=opendir(CS filter->vacation_directory);
3477
3478 if (oncelogdir ==(DIR*)0 && errno != ENOENT)
3479 {
3480 filter->errmsg=CUS "unable to open vacation directory";
3481 return -1;
3482 }
3483
3484 if (oncelogdir != NULL)
3485 {
3486 time(&now);
3487
3488 while ((oncelog=readdir(oncelogdir))!=(struct dirent*)0)
3489 {
3490 if (strlen(oncelog->d_name)==32)
3491 {
3492 uschar *s=string_sprintf("%s/%s",filter->vacation_directory,oncelog->d_name);
3493 if (Ustat(s,&properties)==0 && (properties.st_mtime+VACATION_MAX_DAYS*86400)<now)
3494 Uunlink(s);
3495 }
3496 }
3497 closedir(oncelogdir);
3498 }
3499 }
3500
3501 while (parse_identifier(filter,CUS "require"))
3502 {
3503 /*
3504 require-command = "require" <capabilities: string-list>
3505 */
3506
3507 struct String *cap,*check;
3508 int m;
3509
3510 if (parse_white(filter)==-1) return -1;
3511 if ((m=parse_stringlist(filter,&cap))!=1)
3512 {
3513 if (m==0) filter->errmsg=CUS "capability string list expected";
3514 return -1;
3515 }
3516 for (check=cap; check->character; ++check)
3517 {
3518 if (eq_octet(check,&str_envelope,0)) filter->require_envelope=1;
3519 else if (eq_octet(check,&str_fileinto,0)) filter->require_fileinto=1;
3520 #ifdef ENCODED_CHARACTER
3521 else if (eq_octet(check,&str_encoded_character,0)) filter->require_encoded_character=1;
3522 #endif
3523 #ifdef ENVELOPE_AUTH
3524 else if (eq_octet(check,&str_envelope_auth,0)) filter->require_envelope_auth=1;
3525 #endif
3526 #ifdef ENOTIFY
3527 else if (eq_octet(check,&str_enotify,0))
3528 {
3529 if (filter->enotify_mailto_owner == NULL)
3530 {
3531 filter->errmsg=CUS "enotify disabled";
3532 return -1;
3533 }
3534 filter->require_enotify=1;
3535 }
3536 #endif
3537 #ifdef SUBADDRESS
3538 else if (eq_octet(check,&str_subaddress,0)) filter->require_subaddress=1;
3539 #endif
3540 #ifdef VACATION
3541 else if (eq_octet(check,&str_vacation,0))
3542 {
3543 if (filter_test == FTEST_NONE && filter->vacation_directory == NULL)
3544 {
3545 filter->errmsg=CUS "vacation disabled";
3546 return -1;
3547 }
3548 filter->require_vacation=1;
3549 }
3550 #endif
3551 else if (eq_octet(check,&str_copy,0)) filter->require_copy=1;
3552 else if (eq_octet(check,&str_comparator_ioctet,0)) ;
3553 else if (eq_octet(check,&str_comparator_iascii_casemap,0)) ;
3554 else if (eq_octet(check,&str_comparator_enascii_casemap,0)) ;
3555 else if (eq_octet(check,&str_comparator_iascii_numeric,0)) filter->require_iascii_numeric=1;
3556 else
3557 {
3558 filter->errmsg=CUS "unknown capability";
3559 return -1;
3560 }
3561 }
3562 if (parse_semicolon(filter)==-1) return -1;
3563 }
3564 if (parse_commands(filter,exec,generated)==-1) return -1;
3565 if (*filter->pc)
3566 {
3567 filter->errmsg=CUS "syntax error";
3568 return -1;
3569 }
3570 return 1;
3571 }
3572
3573
3574 /*************************************************
3575 * Interpret a sieve filter file *
3576 *************************************************/
3577
3578 /*
3579 Arguments:
3580 filter points to the entire file, read into store as a single string
3581 options controls whether various special things are allowed, and requests
3582 special actions (not currently used)
3583 vacation_directory where to store vacation "once" files
3584 enotify_mailto_owner owner of mailto notifications
3585 useraddress string expression for :user part of address
3586 subaddress string expression for :subaddress part of address
3587 generated where to hang newly-generated addresses
3588 error where to pass back an error text
3589
3590 Returns: FF_DELIVERED success, a significant action was taken
3591 FF_NOTDELIVERED success, no significant action
3592 FF_DEFER defer requested
3593 FF_FAIL fail requested
3594 FF_FREEZE freeze requested
3595 FF_ERROR there was a problem
3596 */
3597
3598 int
3599 sieve_interpret(uschar *filter, int options, uschar *vacation_directory,
3600 uschar *enotify_mailto_owner, uschar *useraddress, uschar *subaddress,
3601 address_item **generated, uschar **error)
3602 {
3603 struct Sieve sieve;
3604 int r;
3605 uschar *msg;
3606
3607 options = options; /* Keep picky compilers happy */
3608 error = error;
3609
3610 DEBUG(D_route) debug_printf("Sieve: start of processing\n");
3611 sieve.filter=filter;
3612
3613 if (vacation_directory == NULL)
3614 sieve.vacation_directory = NULL;
3615 else
3616 {
3617 sieve.vacation_directory=expand_string(vacation_directory);
3618 if (sieve.vacation_directory == NULL)
3619 {
3620 *error = string_sprintf("failed to expand \"%s\" "
3621 "(sieve_vacation_directory): %s", vacation_directory,
3622 expand_string_message);
3623 return FF_ERROR;
3624 }
3625 }
3626
3627 if (enotify_mailto_owner == NULL)
3628 sieve.enotify_mailto_owner = NULL;
3629 else
3630 {
3631 sieve.enotify_mailto_owner=expand_string(enotify_mailto_owner);
3632 if (sieve.enotify_mailto_owner == NULL)
3633 {
3634 *error = string_sprintf("failed to expand \"%s\" "
3635 "(sieve_enotify_mailto_owner): %s", enotify_mailto_owner,
3636 expand_string_message);
3637 return FF_ERROR;
3638 }
3639 }
3640
3641 sieve.useraddress = useraddress == NULL ? CUS "$local_part_prefix$local_part$local_part_suffix" : useraddress;
3642 sieve.subaddress = subaddress;
3643
3644 #ifdef COMPILE_SYNTAX_CHECKER
3645 if (parse_start(&sieve,0,generated)==1)
3646 #else
3647 if (parse_start(&sieve,1,generated)==1)
3648 #endif
3649 {
3650 if (sieve.keep)
3651 {
3652 add_addr(generated,US"inbox",1,0,0,0);
3653 msg = string_sprintf("Implicit keep");
3654 r = FF_DELIVERED;
3655 }
3656 else
3657 {
3658 msg = string_sprintf("No implicit keep");
3659 r = FF_DELIVERED;
3660 }
3661 }
3662 else
3663 {
3664 msg = string_sprintf("Sieve error: %s in line %d",sieve.errmsg,sieve.line);
3665 #ifdef COMPILE_SYNTAX_CHECKER
3666 r = FF_ERROR;
3667 *error = msg;
3668 #else
3669 add_addr(generated,US"inbox",1,0,0,0);
3670 r = FF_DELIVERED;
3671 #endif
3672 }
3673
3674 #ifndef COMPILE_SYNTAX_CHECKER
3675 if (filter_test != FTEST_NONE) printf("%s\n", (const char*) msg);
3676 else debug_printf("%s\n", msg);
3677 #endif
3678
3679 DEBUG(D_route) debug_printf("Sieve: end of processing\n");
3680 return r;
3681 }
Unnamed repository; edit this file 'description' to name the repository.