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Import Upstream version 4.84.2
[hcoop/debian/exim4.git] / src / sieve.c
CommitLineData
420a0d19
CE		 1/*************************************************
2* Exim - an Internet mail transport agent *
3*************************************************/
4
5/* Copyright (c) Michael Haardt 2003-2008 */
6/* See the file NOTICE for conditions of use and distribution. */
7
8/* This code was contributed by Michael Haardt. */
9
10
11/* Sieve mail filter. */
12
13#include <ctype.h>
14#include <errno.h>
15#include <limits.h>
16#include <stdlib.h>
17#include <string.h>
18
19#include "exim.h"
20
21#if HAVE_ICONV
22#include <iconv.h>
23#endif
24
25/* Define this for RFC compliant \r\n end-of-line terminators. */
26/* Undefine it for UNIX-style \n end-of-line terminators (default). */
27#undef RFC_EOL
28
29/* Define this for development of the Sieve extension "encoded-character". */
30#define ENCODED_CHARACTER
31
32/* Define this for development of the Sieve extension "envelope-auth". */
33#undef ENVELOPE_AUTH
34
35/* Define this for development of the Sieve extension "enotify". */
36#define ENOTIFY
37
38/* Define this for the Sieve extension "subaddress". */
39#define SUBADDRESS
40
41/* Define this for the Sieve extension "vacation". */
42#define VACATION
43
44/* Must be >= 1 */
45#define VACATION_MIN_DAYS 1
46/* Must be >= VACATION_MIN_DAYS, must be > 7, should be > 30 */
47#define VACATION_MAX_DAYS 31
48
49/* Keep this at 75 to accept only RFC compliant MIME words. */
50/* Increase it if you want to match headers from buggy MUAs. */
51#define MIMEWORD_LENGTH 75
52
53struct Sieve
54 {
55 uschar *filter;
56 const uschar *pc;
57 int line;
58 const uschar *errmsg;
59 int keep;
60 int require_envelope;
61 int require_fileinto;
62#ifdef ENCODED_CHARACTER
63 int require_encoded_character;
64#endif
65#ifdef ENVELOPE_AUTH
66 int require_envelope_auth;
67#endif
68#ifdef ENOTIFY
69 int require_enotify;
70 struct Notification *notified;
71#endif
72 uschar *enotify_mailto_owner;
73#ifdef SUBADDRESS
74 int require_subaddress;
75#endif
76#ifdef VACATION
77 int require_vacation;
78 int vacation_ran;
79#endif
80 uschar *vacation_directory;
81 const uschar *subaddress;
82 const uschar *useraddress;
83 int require_copy;
84 int require_iascii_numeric;
85 };
86
87enum Comparator { COMP_OCTET, COMP_EN_ASCII_CASEMAP, COMP_ASCII_NUMERIC };
88enum MatchType { MATCH_IS, MATCH_CONTAINS, MATCH_MATCHES };
89#ifdef SUBADDRESS
90enum AddressPart { ADDRPART_USER, ADDRPART_DETAIL, ADDRPART_LOCALPART, ADDRPART_DOMAIN, ADDRPART_ALL };
91#else
92enum AddressPart { ADDRPART_LOCALPART, ADDRPART_DOMAIN, ADDRPART_ALL };
93#endif
94enum RelOp { LT, LE, EQ, GE, GT, NE };
95
96struct String
97 {
98 uschar *character;
99 int length;
100 };
101
102struct Notification
103 {
104 struct String method;
105 struct String importance;
106 struct String message;
107 struct Notification *next;
108 };
109
110/* This should be a complete list of supported extensions, so that an external
111ManageSieve (RFC 5804) program can interrogate the current Exim binary for the
112list of extensions and provide correct information to a client.
113
114We'll emit the list in the order given here; keep it alphabetically sorted, so
115that callers don't get surprised.
116
117List *MUST* end with a NULL. Which at least makes ifdef-vs-comma easier. */
118
119const uschar *exim_sieve_extension_list[] = {
120 CUS"comparator-i;ascii-numeric",
121 CUS"copy",
122#ifdef ENCODED_CHARACTER
123 CUS"encoded-character",
124#endif
125#ifdef ENOTIFY
126 CUS"enotify",
127#endif
128 CUS"envelope",
129#ifdef ENVELOPE_AUTH
130 CUS"envelope-auth",
131#endif
132 CUS"fileinto",
133#ifdef SUBADDRESS
134 CUS"subaddress",
135#endif
136#ifdef VACATION
137 CUS"vacation",
138#endif
139 NULL
140};
141
142static int eq_asciicase(const struct String *needle, const struct String *haystack, int match_prefix);
143static int parse_test(struct Sieve *filter, int *cond, int exec);
144static int parse_commands(struct Sieve *filter, int exec, address_item **generated);
145
146static uschar str_from_c[]="From";
147static const struct String str_from={ str_from_c, 4 };
148static uschar str_to_c[]="To";
149static const struct String str_to={ str_to_c, 2 };
150static uschar str_cc_c[]="Cc";
151static const struct String str_cc={ str_cc_c, 2 };
152static uschar str_bcc_c[]="Bcc";
153static const struct String str_bcc={ str_bcc_c, 3 };
154static uschar str_auth_c[]="auth";
155static const struct String str_auth={ str_auth_c, 4 };
156static uschar str_sender_c[]="Sender";
157static const struct String str_sender={ str_sender_c, 6 };
158static uschar str_resent_from_c[]="Resent-From";
159static const struct String str_resent_from={ str_resent_from_c, 11 };
160static uschar str_resent_to_c[]="Resent-To";
161static const struct String str_resent_to={ str_resent_to_c, 9 };
162static uschar str_fileinto_c[]="fileinto";
163static const struct String str_fileinto={ str_fileinto_c, 8 };
164static uschar str_envelope_c[]="envelope";
165static const struct String str_envelope={ str_envelope_c, 8 };
166#ifdef ENCODED_CHARACTER
167static uschar str_encoded_character_c[]="encoded-character";
168static const struct String str_encoded_character={ str_encoded_character_c, 17 };
169#endif
170#ifdef ENVELOPE_AUTH
171static uschar str_envelope_auth_c[]="envelope-auth";
172static const struct String str_envelope_auth={ str_envelope_auth_c, 13 };
173#endif
174#ifdef ENOTIFY
175static uschar str_enotify_c[]="enotify";
176static const struct String str_enotify={ str_enotify_c, 7 };
177static uschar str_online_c[]="online";
178static const struct String str_online={ str_online_c, 6 };
179static uschar str_maybe_c[]="maybe";
180static const struct String str_maybe={ str_maybe_c, 5 };
181static uschar str_auto_submitted_c[]="Auto-Submitted";
182static const struct String str_auto_submitted={ str_auto_submitted_c, 14 };
183#endif
184#ifdef SUBADDRESS
185static uschar str_subaddress_c[]="subaddress";
186static const struct String str_subaddress={ str_subaddress_c, 10 };
187#endif
188#ifdef VACATION
189static uschar str_vacation_c[]="vacation";
190static const struct String str_vacation={ str_vacation_c, 8 };
191static uschar str_subject_c[]="Subject";
192static const struct String str_subject={ str_subject_c, 7 };
193#endif
194static uschar str_copy_c[]="copy";
195static const struct String str_copy={ str_copy_c, 4 };
196static uschar str_iascii_casemap_c[]="i;ascii-casemap";
197static const struct String str_iascii_casemap={ str_iascii_casemap_c, 15 };
198static uschar str_enascii_casemap_c[]="en;ascii-casemap";
199static const struct String str_enascii_casemap={ str_enascii_casemap_c, 16 };
200static uschar str_ioctet_c[]="i;octet";
201static const struct String str_ioctet={ str_ioctet_c, 7 };
202static uschar str_iascii_numeric_c[]="i;ascii-numeric";
203static const struct String str_iascii_numeric={ str_iascii_numeric_c, 15 };
204static uschar str_comparator_iascii_casemap_c[]="comparator-i;ascii-casemap";
205static const struct String str_comparator_iascii_casemap={ str_comparator_iascii_casemap_c, 26 };
206static uschar str_comparator_enascii_casemap_c[]="comparator-en;ascii-casemap";
207static const struct String str_comparator_enascii_casemap={ str_comparator_enascii_casemap_c, 27 };
208static uschar str_comparator_ioctet_c[]="comparator-i;octet";
209static const struct String str_comparator_ioctet={ str_comparator_ioctet_c, 18 };
210static uschar str_comparator_iascii_numeric_c[]="comparator-i;ascii-numeric";
211static const struct String str_comparator_iascii_numeric={ str_comparator_iascii_numeric_c, 26 };
212
213
214/*************************************************
215* Encode to quoted-printable *
216*************************************************/
217
218/*
219Arguments:
220 src UTF-8 string
221 dst US-ASCII string
222
223Returns
224 dst
225*/
226
227static struct String *quoted_printable_encode(const struct String *src, struct String *dst)
228{
229int pass;
230const uschar *start,*end;
231uschar *new = NULL;
232uschar ch;
233size_t line;
234
235for (pass=0; pass<=1; ++pass)
236 {
237 line=0;
238 if (pass==0)
239 dst->length=0;
240 else
241 {
242 dst->character=store_get(dst->length+1); /* plus one for \0 */
243 new=dst->character;
244 }
245 for (start=src->character,end=start+src->length; start<end; ++start)
246 {
247 ch=*start;
248 if (line>=73)
249 {
250 if (pass==0)
251 dst->length+=2;
252 else
253 {
254 *new++='=';
255 *new++='\n';
256 }
257 line=0;
258 }
259 if
260 (
261 (ch>=33 && ch<=60)
262 || (ch>=62 && ch<=126)
263 ||
264 (
265 (ch==9 || ch==32)
266 && start+2<end
267 && (*(start+1)!='\r' || *(start+2)!='\n')
268 )
269 )
270 {
271 if (pass==0)
272 ++dst->length;
273 else
274 *new++=*start;
275 ++line;
276 }
277 else if (ch=='\r' && start+1<end && *(start+1)=='\n')
278 {
279 if (pass==0)
280 {
281 ++dst->length;
282 line=0;
283 }
284 else
285 *new++='\n';
286 line=0;
287 ++start;
288 }
289 else
290 {
291 if (pass==0)
292 dst->length+=3;
293 else
294 {
295 sprintf(CS new,"=%02X",ch);
296 new+=3;
297 }
298 line+=3;
299 }
300 }
301 }
302 *new='\0'; /* not included in length, but nice */
303 return dst;
304}
305
306
307/*************************************************
308* Check mail address for correct syntax *
309*************************************************/
310
311/*
312Check mail address for being syntactically correct.
313
314Arguments:
315 filter points to the Sieve filter including its state
316 address String containing one address
317
318Returns
319 1 Mail address is syntactically OK
320 -1 syntax error
321*/
322
323int check_mail_address(struct Sieve *filter, const struct String *address)
324{
325int start, end, domain;
326uschar *error,*ss;
327
328if (address->length>0)
329 {
330 ss = parse_extract_address(address->character, &error, &start, &end, &domain,
331 FALSE);
332 if (ss == NULL)
333 {
334 filter->errmsg=string_sprintf("malformed address \"%s\" (%s)",
335 address->character, error);
336 return -1;
337 }
338 else
339 return 1;
340 }
341else
342 {
343 filter->errmsg=CUS "empty address";
344 return -1;
345 }
346}
347
348
349/*************************************************
350* Decode URI encoded string *
351*************************************************/
352
353/*
354Arguments:
355 str URI encoded string
356
357Returns
358 0 Decoding successful
359 -1 Encoding error
360*/
361
362#ifdef ENOTIFY
363static int uri_decode(struct String *str)
364{
365uschar *s,*t,*e;
366
367if (str->length==0) return 0;
368for (s=str->character,t=s,e=s+str->length; s<e; )
369 {
370 if (*s=='%')
371 {
372 if (s+2<e && isxdigit(*(s+1)) && isxdigit(*(s+2)))
373 {
374 *t++=((isdigit(*(s+1)) ? *(s+1)-'0' : tolower(*(s+1))-'a'+10)<<4)
375 | (isdigit(*(s+2)) ? *(s+2)-'0' : tolower(*(s+2))-'a'+10);
376 s+=3;
377 }
378 else return -1;
379 }
380 else
381 *t++=*s++;
382 }
383*t='\0';
384str->length=t-str->character;
385return 0;
386}
387
388
389/*************************************************
390* Parse mailto URI *
391*************************************************/
392
393/*
394Parse mailto-URI.
395
396 mailtoURI = "mailto:" [ to ] [ headers ]
397 to = [ addr-spec *("%2C" addr-spec ) ]
398 headers = "?" header *( "&" header )
399 header = hname "=" hvalue
400 hname = *urlc
401 hvalue = *urlc
402
403Arguments:
404 filter points to the Sieve filter including its state
405 uri URI, excluding scheme
406 recipient
407 body
408
409Returns
410 1 URI is syntactically OK
411 0 Unknown URI scheme
412 -1 syntax error
413*/
414
415static int parse_mailto_uri(struct Sieve *filter, const uschar *uri, string_item **recipient, struct String *header, struct String *subject, struct String *body)
416{
417const uschar *start;
418struct String to,hname,hvalue;
419int capacity;
420string_item *new;
421
422if (Ustrncmp(uri,"mailto:",7))
423 {
424 filter->errmsg=US "Unknown URI scheme";
425 return 0;
426 }
427uri+=7;
428if (*uri && *uri!='?')
429 for (;;)
430 {
431 /* match to */
432 for (start=uri; *uri && *uri!='?' && (*uri!='%' || *(uri+1)!='2' || tolower(*(uri+2))!='c'); ++uri);
433 if (uri>start)
434 {
435 capacity=0;
436 to.character=(uschar*)0;
437 to.length=0;
438 to.character=string_cat(to.character,&capacity,&to.length,start,uri-start);
439 to.character[to.length]='\0';
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 }
460if (*uri=='?')
461 {
462 ++uri;
463 for (;;)
464 {
465 /* match hname */
466 for (start=uri; *uri && (isalnum(*uri) || strchr("$-_.+!*'(),%",*uri)); ++uri);
467 if (uri>start)
468 {
469 capacity=0;
470 hname.character=(uschar*)0;
471 hname.length=0;
472 hname.character=string_cat(hname.character,&capacity,&hname.length,start,uri-start);
473 hname.character[hname.length]='\0';
474 if (uri_decode(&hname)==-1)
475 {
476 filter->errmsg=US"Invalid URI encoding";
477 return -1;
478 }
479 }
480 /* match = */
481 if (*uri=='=')
482 ++uri;
483 else
484 {
485 filter->errmsg=US"Missing equal after hname";
486 return -1;
487 }
488 /* match hvalue */
489 for (start=uri; *uri && (isalnum(*uri) || strchr("$-_.+!*'(),%",*uri)); ++uri);
490 if (uri>start)
491 {
492 capacity=0;
493 hvalue.character=(uschar*)0;
494 hvalue.length=0;
495 hvalue.character=string_cat(hvalue.character,&capacity,&hvalue.length,start,uri-start);
496 hvalue.character[hvalue.length]='\0';
497 if (uri_decode(&hvalue)==-1)
498 {
499 filter->errmsg=US"Invalid URI encoding";
500 return -1;
501 }
502 }
503 if (hname.length==2 && strcmpic(hname.character, US"to")==0)
504 {
505 new=store_get(sizeof(string_item));
506 new->text=store_get(hvalue.length+1);
507 if (hvalue.length) memcpy(new->text,hvalue.character,hvalue.length);
508 new->text[hvalue.length]='\0';
509 new->next=*recipient;
510 *recipient=new;
511 }
512 else if (hname.length==4 && strcmpic(hname.character, US"body")==0)
513 *body=hvalue;
514 else if (hname.length==7 && strcmpic(hname.character, US"subject")==0)
515 *subject=hvalue;
516 else
517 {
518 static struct String ignore[]=
519 {
520 {US"date",4},
521 {US"from",4},
522 {US"message-id",10},
523 {US"received",8},
524 {US"auto-submitted",14}
525 };
526 static struct String *end=ignore+sizeof(ignore)/sizeof(ignore[0]);
527 struct String *i;
528
529 for (i=ignore; i<end && !eq_asciicase(&hname,i,0); ++i);
530 if (i==end)
531 {
532 if (header->length==-1) header->length=0;
533 capacity=header->length;
534 header->character=string_cat(header->character,&capacity,&header->length,hname.character,hname.length);
535 header->character=string_cat(header->character,&capacity,&header->length,CUS ": ",2);
536 header->character=string_cat(header->character,&capacity,&header->length,hvalue.character,hvalue.length);
537 header->character=string_cat(header->character,&capacity,&header->length,CUS "\n",1);
538 header->character[header->length]='\0';
539 }
540 }
541 if (*uri=='&') ++uri;
542 else break;
543 }
544 }
545if (*uri)
546 {
547 filter->errmsg=US"Syntactically invalid URI";
548 return -1;
549 }
550return 1;
551}
552#endif
553
554
555/*************************************************
556* Octet-wise string comparison *
557*************************************************/
558
559/*
560Arguments:
561 needle UTF-8 string to search ...
562 haystack ... inside the haystack
563 match_prefix 1 to compare if needle is a prefix of haystack
564
565Returns: 0 needle not found in haystack
566 1 needle found
567*/
568
569static int eq_octet(const struct String *needle,
570 const struct String *haystack, int match_prefix)
571{
572size_t nl,hl;
573const uschar *n,*h;
574
575nl=needle->length;
576n=needle->character;
577hl=haystack->length;
578h=haystack->character;
579while (nl>0 && hl>0)
580 {
581#if !HAVE_ICONV
582 if (*n&0x80) return 0;
583 if (*h&0x80) return 0;
584#endif
585 if (*n!=*h) return 0;
586 ++n;
587 ++h;
588 --nl;
589 --hl;
590 }
591return (match_prefix ? nl==0 : nl==0 && hl==0);
592}
593
594
595/*************************************************
596* ASCII case-insensitive string comparison *
597*************************************************/
598
599/*
600Arguments:
601 needle UTF-8 string to search ...
602 haystack ... inside the haystack
603 match_prefix 1 to compare if needle is a prefix of haystack
604
605Returns: 0 needle not found in haystack
606 1 needle found
607*/
608
609static int eq_asciicase(const struct String *needle,
610 const struct String *haystack, int match_prefix)
611{
612size_t nl,hl;
613const uschar *n,*h;
614uschar nc,hc;
615
616nl=needle->length;
617n=needle->character;
618hl=haystack->length;
619h=haystack->character;
620while (nl>0 && hl>0)
621 {
622 nc=*n;
623 hc=*h;
624#if !HAVE_ICONV
625 if (nc&0x80) return 0;
626 if (hc&0x80) return 0;
627#endif
628 /* tolower depends on the locale and only ASCII case must be insensitive */
629 if ((nc>='A' && nc<='Z' ? nc|0x20 : nc) != (hc>='A' && hc<='Z' ? hc|0x20 : hc)) return 0;
630 ++n;
631 ++h;
632 --nl;
633 --hl;
634 }
635return (match_prefix ? nl==0 : nl==0 && hl==0);
636}
637
638
639/*************************************************
640* Glob pattern search *
641*************************************************/
642
643/*
644Arguments:
645 needle pattern to search ...
646 haystack ... inside the haystack
647 ascii_caseless ignore ASCII case
648 match_octet match octets, not UTF-8 multi-octet characters
649
650Returns: 0 needle not found in haystack
651 1 needle found
652 -1 pattern error
653*/
654
655static int eq_glob(const struct String *needle,
656 const struct String *haystack, int ascii_caseless, int match_octet)
657{
658const uschar *n,*h,*nend,*hend;
659int may_advance=0;
660
661n=needle->character;
662h=haystack->character;
663nend=n+needle->length;
664hend=h+haystack->length;
665while (n<nend)
666 {
667 if (*n=='*')
668 {
669 ++n;
670 may_advance=1;
671 }
672 else
673 {
674 const uschar *npart,*hpart;
675
676 /* Try to match a non-star part of the needle at the current */
677 /* position in the haystack. */
678 match_part:
679 npart=n;
680 hpart=h;
681 while (npart<nend && *npart!='*') switch (*npart)
682 {
683 case '?':
684 {
685 if (hpart==hend) return 0;
686 if (match_octet)
687 ++hpart;
688 else
689 {
690 /* Match one UTF8 encoded character */
691 if ((*hpart&0xc0)==0xc0)
692 {
693 ++hpart;
694 while (hpart<hend && ((*hpart&0xc0)==0x80)) ++hpart;
695 }
696 else
697 ++hpart;
698 }
699 ++npart;
700 break;
701 }
702 case '\\':
703 {
704 ++npart;
705 if (npart==nend) return -1;
706 /* FALLTHROUGH */
707 }
708 default:
709 {
710 if (hpart==hend) return 0;
711 /* tolower depends on the locale, but we need ASCII */
712 if
713 (
714#if !HAVE_ICONV
715 (*hpart&0x80) || (*npart&0x80) ||
716#endif
717 ascii_caseless
718 ? ((*npart>='A' && *npart<='Z' ? *npart|0x20 : *npart) != (*hpart>='A' && *hpart<='Z' ? *hpart|0x20 : *hpart))
719 : *hpart!=*npart
720 )
721 {
722 if (may_advance)
723 /* string match after a star failed, advance and try again */
724 {
725 ++h;
726 goto match_part;
727 }
728 else return 0;
729 }
730 else
731 {
732 ++npart;
733 ++hpart;
734 };
735 }
736 }
737 /* at this point, a part was matched successfully */
738 if (may_advance && npart==nend && hpart<hend)
739 /* needle ends, but haystack does not: if there was a star before, advance and try again */
740 {
741 ++h;
742 goto match_part;
743 }
744 h=hpart;
745 n=npart;
746 may_advance=0;
747 }
748 }
749return (h==hend ? 1 : may_advance);
750}
751
752
753/*************************************************
754* ASCII numeric comparison *
755*************************************************/
756
757/*
758Arguments:
759 a first numeric string
760 b second numeric string
761 relop relational operator
762
763Returns: 0 not (a relop b)
764 1 a relop b
765*/
766
767static int eq_asciinumeric(const struct String *a,
768 const struct String *b, enum RelOp relop)
769{
770size_t al,bl;
771const uschar *as,*aend,*bs,*bend;
772int cmp;
773
774as=a->character;
775aend=a->character+a->length;
776bs=b->character;
777bend=b->character+b->length;
778
779while (*as>='0' && *as<='9' && as<aend) ++as;
780al=as-a->character;
781while (*bs>='0' && *bs<='9' && bs<bend) ++bs;
782bl=bs-b->character;
783
784if (al && bl==0) cmp=-1;
785else if (al==0 && bl==0) cmp=0;
786else if (al==0 && bl) cmp=1;
787else
788 {
789 cmp=al-bl;
790 if (cmp==0) cmp=memcmp(a->character,b->character,al);
791 }
792switch (relop)
793 {
794 case LT: return cmp<0;
795 case LE: return cmp<=0;
796 case EQ: return cmp==0;
797 case GE: return cmp>=0;
798 case GT: return cmp>0;
799 case NE: return cmp!=0;
800 }
801 /*NOTREACHED*/
802 return -1;
803}
804
805
806/*************************************************
807* Compare strings *
808*************************************************/
809
810/*
811Arguments:
812 filter points to the Sieve filter including its state
813 needle UTF-8 pattern or string to search ...
814 haystack ... inside the haystack
815 co comparator to use
816 mt match type to use
817
818Returns: 0 needle not found in haystack
819 1 needle found
820 -1 comparator does not offer matchtype
821*/
822
823static int compare(struct Sieve *filter, const struct String *needle, const struct String *haystack,
824 enum Comparator co, enum MatchType mt)
825{
826int r=0;
827
828if ((filter_test != FTEST_NONE && debug_selector != 0) ||
829 (debug_selector & D_filter) != 0)
830 {
831 debug_printf("String comparison (match ");
832 switch (mt)
833 {
834 case MATCH_IS: debug_printf(":is"); break;
835 case MATCH_CONTAINS: debug_printf(":contains"); break;
836 case MATCH_MATCHES: debug_printf(":matches"); break;
837 }
838 debug_printf(", comparison \"");
839 switch (co)
840 {
841 case COMP_OCTET: debug_printf("i;octet"); break;
842 case COMP_EN_ASCII_CASEMAP: debug_printf("en;ascii-casemap"); break;
843 case COMP_ASCII_NUMERIC: debug_printf("i;ascii-numeric"); break;
844 }
845 debug_printf("\"):\n");
846 debug_printf(" Search = %s (%d chars)\n", needle->character,needle->length);
847 debug_printf(" Inside = %s (%d chars)\n", haystack->character,haystack->length);
848 }
849switch (mt)
850 {
851 case MATCH_IS:
852 {
853 switch (co)
854 {
855 case COMP_OCTET:
856 {
857 if (eq_octet(needle,haystack,0)) r=1;
858 break;
859 }
860 case COMP_EN_ASCII_CASEMAP:
861 {
862 if (eq_asciicase(needle,haystack,0)) r=1;
863 break;
864 }
865 case COMP_ASCII_NUMERIC:
866 {
867 if (!filter->require_iascii_numeric)
868 {
869 filter->errmsg=CUS "missing previous require \"comparator-i;ascii-numeric\";";
870 return -1;
871 }
872 if (eq_asciinumeric(needle,haystack,EQ)) r=1;
873 break;
874 }
875 }
876 break;
877 }
878 case MATCH_CONTAINS:
879 {
880 struct String h;
881
882 switch (co)
883 {
884 case COMP_OCTET:
885 {
886 for (h=*haystack; h.length; ++h.character,--h.length) if (eq_octet(needle,&h,1)) { r=1; break; }
887 break;
888 }
889 case COMP_EN_ASCII_CASEMAP:
890 {
891 for (h=*haystack; h.length; ++h.character,--h.length) if (eq_asciicase(needle,&h,1)) { r=1; break; }
892 break;
893 }
894 default:
895 {
896 filter->errmsg=CUS "comparator does not offer specified matchtype";
897 return -1;
898 }
899 }
900 break;
901 }
902 case MATCH_MATCHES:
903 {
904 switch (co)
905 {
906 case COMP_OCTET:
907 {
908 if ((r=eq_glob(needle,haystack,0,1))==-1)
909 {
910 filter->errmsg=CUS "syntactically invalid pattern";
911 return -1;
912 }
913 break;
914 }
915 case COMP_EN_ASCII_CASEMAP:
916 {
917 if ((r=eq_glob(needle,haystack,1,1))==-1)
918 {
919 filter->errmsg=CUS "syntactically invalid pattern";
920 return -1;
921 }
922 break;
923 }
924 default:
925 {
926 filter->errmsg=CUS "comparator does not offer specified matchtype";
927 return -1;
928 }
929 }
930 break;
931 }
932 }
933if ((filter_test != FTEST_NONE && debug_selector != 0) ||
934 (debug_selector & D_filter) != 0)
935 debug_printf(" Result %s\n",r?"true":"false");
936return r;
937}
938
939
940/*************************************************
941* Check header field syntax *
942*************************************************/
943
944/*
945RFC 2822, section 3.6.8 says:
946
947 field-name = 1*ftext
948
949 ftext = %d33-57 / ; Any character except
950 %d59-126 ; controls, SP, and
951 ; ":".
952
953That forbids 8-bit header fields. This implementation accepts them, since
954all of Exim is 8-bit clean, so it adds %d128-%d255.
955
956Arguments:
957 header header field to quote for suitable use in Exim expansions
958
959Returns: 0 string is not a valid header field
960 1 string is a value header field
961*/
962
963static int is_header(const struct String *header)
964{
965size_t l;
966const uschar *h;
967
968l=header->length;
969h=header->character;
970if (l==0) return 0;
971while (l)
972 {
973 if (((unsigned char)*h)<33 || ((unsigned char)*h)==':' || ((unsigned char)*h)==127) return 0;
974 else
975 {
976 ++h;
977 --l;
978 }
979 }
980return 1;
981}
982
983
984/*************************************************
985* Quote special characters string *
986*************************************************/
987
988/*
989Arguments:
990 header header field to quote for suitable use in Exim expansions
991 or as debug output
992
993Returns: quoted string
994*/
995
996static const uschar *quote(const struct String *header)
997{
998uschar *quoted=NULL;
999int size=0,ptr=0;
1000size_t l;
1001const uschar *h;
1002
1003l=header->length;
1004h=header->character;
1005while (l)
1006 {
1007 switch (*h)
1008 {
1009 case '\0':
1010 {
1011 quoted=string_cat(quoted,&size,&ptr,CUS "\\0",2);
1012 break;
1013 }
1014 case '$':
1015 case '{':
1016 case '}':
1017 {
1018 quoted=string_cat(quoted,&size,&ptr,CUS "\\",1);
1019 }
1020 default:
1021 {
1022 quoted=string_cat(quoted,&size,&ptr,h,1);
1023 }
1024 }
1025 ++h;
1026 --l;
1027 }
1028quoted=string_cat(quoted,&size,&ptr,CUS "",1);
1029return quoted;
1030}
1031
1032
1033/*************************************************
1034* Add address to list of generated addresses *
1035*************************************************/
1036
1037/*
1038According to RFC 5228, duplicate delivery to the same address must
1039not happen, so the list is first searched for the address.
1040
1041Arguments:
1042 generated list of generated addresses
1043 addr new address to add
1044 file address denotes a file
1045
1046Returns: nothing
1047*/
1048
1049static void add_addr(address_item **generated, uschar *addr, int file, int maxage, int maxmessages, int maxstorage)
1050{
1051address_item *new_addr;
1052
1053for (new_addr=*generated; new_addr; new_addr=new_addr->next)
1054 {
1055 if (Ustrcmp(new_addr->address,addr)==0 && (file ? testflag(new_addr, af_pfr|af_file) : 1))
1056 {
1057 if ((filter_test != FTEST_NONE && debug_selector != 0) || (debug_selector & D_filter) != 0)
1058 {
1059 debug_printf("Repeated %s `%s' ignored.\n",file ? "fileinto" : "redirect", addr);
1060 }
1061 return;
1062 }
1063 }
1064
1065if ((filter_test != FTEST_NONE && debug_selector != 0) || (debug_selector & D_filter) != 0)
1066 {
1067 debug_printf("%s `%s'\n",file ? "fileinto" : "redirect", addr);
1068 }
1069new_addr=deliver_make_addr(addr,TRUE);
1070if (file)
1071 {
1072 setflag(new_addr, af_pfr|af_file);
1073 new_addr->mode = 0;
1074 }
1075new_addr->p.errors_address = NULL;
1076new_addr->next = *generated;
1077*generated = new_addr;
1078}
1079
1080
1081/*************************************************
1082* Return decoded header field *
1083*************************************************/
1084
1085/*
1086Unfold the header field as described in RFC 2822 and remove all
1087leading and trailing white space, then perform MIME decoding and
1088translate the header field to UTF-8.
1089
1090Arguments:
1091 value returned value of the field
1092 header name of the header field
1093
1094Returns: nothing The expanded string is empty
1095 in case there is no such header
1096*/
1097
1098static void expand_header(struct String *value, const struct String *header)
1099{
1100uschar *s,*r,*t;
1101uschar *errmsg;
1102
1103value->length=0;
1104value->character=(uschar*)0;
1105
1106t=r=s=expand_string(string_sprintf("$rheader_%s",quote(header)));
1107while (*r==' ' || *r=='\t') ++r;
1108while (*r)
1109 {
1110 if (*r=='\n')
1111 ++r;
1112 else
1113 *t++=*r++;
1114 }
1115while (t>s && (*(t-1)==' ' || *(t-1)=='\t')) --t;
1116*t='\0';
1117value->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/*
1126Token definition:
1127 Comment up to terminating CRLF
1128
1129Arguments:
1130 filter points to the Sieve filter including its state
1131
1132Returns: 1 success
1133 -1 syntax error
1134*/
1135
1136static int parse_hashcomment(struct Sieve *filter)
1137{
1138++filter->pc;
1139while (*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 }
1157filter->errmsg=CUS "missing end of comment";
1158return -1;
1159}
1160
1161
1162/*************************************************
1163* Parse remaining C-style comment *
1164*************************************************/
1165
1166/*
1167Token definition:
1168 Everything up to star slash
1169
1170Arguments:
1171 filter points to the Sieve filter including its state
1172
1173Returns: 1 success
1174 -1 syntax error
1175*/
1176
1177static 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/*
1199Token definition:
1200 Spaces, tabs, CRLFs, hash comments or C-style comments
1201
1202Arguments:
1203 filter points to the Sieve filter including its state
1204
1205Returns: 1 success
1206 -1 syntax error
1207*/
1208
1209static int parse_white(struct Sieve *filter)
1210{
1211while (*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 }
1237return 1;
1238}
1239
1240
1241#ifdef ENCODED_CHARACTER
1242/*************************************************
1243* Decode hex-encoded-character string *
1244*************************************************/
1245
1246/*
1247Encoding definition:
1248 blank = SP / TAB / CRLF
1249 hex-pair-seq = *blank hex-pair *(1*blank hex-pair) *blank
1250 hex-pair = 1*2HEXDIG
1251
1252Arguments:
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
1258Returns: >=0 number of decoded octets
1259 -1 syntax error
1260*/
1261
1262static int hex_decode(uschar *src, uschar *end, uschar *dst)
1263{
1264int decoded=0;
1265
1266while (*src==' ' || *src=='\t' || *src=='\n') ++src;
1267do
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 }
1281while (src<end);
1282return decoded;
1283}
1284
1285
1286/*************************************************
1287* Decode unicode-encoded-character string *
1288*************************************************/
1289
1290/*
1291Encoding 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
1302Arguments:
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
1308Returns: >=0 number of decoded octets
1309 -1 syntax error
1310 -2 semantic error (character range violation)
1311*/
1312
1313static int unicode_decode(uschar *src, uschar *end, uschar *dst)
1314{
1315int decoded=0;
1316
1317while (*src==' ' || *src=='\t' || *src=='\n') ++src;
1318do
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 }
1370while (src<end);
1371return decoded;
1372}
1373
1374
1375/*************************************************
1376* Decode encoded-character string *
1377*************************************************/
1378
1379/*
1380Encoding definition:
1381 encoded-arb-octets = "${hex:" hex-pair-seq "}"
1382 encoded-unicode-char = "${unicode:" unicode-hex-seq "}"
1383
1384Arguments:
1385 encoded points to an encoded string, returns decoded string
1386 filter points to the Sieve filter including its state
1387
1388Returns: 1 success
1389 -1 syntax error
1390*/
1391
1392static int string_decode(struct Sieve *filter, struct String *data)
1393{
1394uschar *src,*dst,*end;
1395
1396src=data->character;
1397dst=src;
1398end=data->character+data->length;
1399while (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';
1440return 1;
1441}
1442#endif
1443
1444
1445/*************************************************
1446* Parse an optional string *
1447*************************************************/
1448
1449/*
1450Token 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
1466Arguments:
1467 filter points to the Sieve filter including its state
1468 id specifies identifier to match
1469
1470Returns: 1 success
1471 -1 syntax error
1472 0 identifier not matched
1473*/
1474
1475static int parse_string(struct Sieve *filter, struct String *data)
1476{
1477int dataCapacity=0;
1478
1479data->length=0;
1480data->character=(uschar*)0;
1481if (*filter->pc=='"') /* quoted string */
1482 {
1483 ++filter->pc;
1484 while (*filter->pc)
1485 {
1486 if (*filter->pc=='"') /* end of string */
1487 {
1488 int foo=data->length;
1489
1490 ++filter->pc;
1491 /* that way, there will be at least one character allocated */
1492 data->character=string_cat(data->character,&dataCapacity,&foo,CUS "",1);
1493#ifdef ENCODED_CHARACTER
1494 if (filter->require_encoded_character
1495 && string_decode(filter,data)==-1)
1496 return -1;
1497#endif
1498 return 1;
1499 }
1500 else if (*filter->pc=='\\' && *(filter->pc+1)) /* quoted character */
1501 {
1502 data->character=string_cat(data->character,&dataCapacity,&data->length,filter->pc+1,1);
1503 filter->pc+=2;
1504 }
1505 else /* regular character */
1506 {
1507#ifdef RFC_EOL
1508 if (*filter->pc=='\r' && *(filter->pc+1)=='\n') ++filter->line;
1509#else
1510 if (*filter->pc=='\n')
1511 {
1512 data->character=string_cat(data->character,&dataCapacity,&data->length,US"\r",1);
1513 ++filter->line;
1514 }
1515#endif
1516 data->character=string_cat(data->character,&dataCapacity,&data->length,filter->pc,1);
1517 filter->pc++;
1518 }
1519 }
1520 filter->errmsg=CUS "missing end of string";
1521 return -1;
1522 }
1523else if (Ustrncmp(filter->pc,CUS "text:",5)==0) /* multiline string */
1524 {
1525 filter->pc+=5;
1526 /* skip optional white space followed by hashed comment or CRLF */
1527 while (*filter->pc==' ' || *filter->pc=='\t') ++filter->pc;
1528 if (*filter->pc=='#')
1529 {
1530 if (parse_hashcomment(filter)==-1) return -1;
1531 }
1532#ifdef RFC_EOL
1533 else if (*filter->pc=='\r' && *(filter->pc+1)=='\n')
1534#else
1535 else if (*filter->pc=='\n')
1536#endif
1537 {
1538#ifdef RFC_EOL
1539 filter->pc+=2;
1540#else
1541 ++filter->pc;
1542#endif
1543 ++filter->line;
1544 }
1545 else
1546 {
1547 filter->errmsg=CUS "syntax error";
1548 return -1;
1549 }
1550 while (*filter->pc)
1551 {
1552#ifdef RFC_EOL
1553 if (*filter->pc=='\r' && *(filter->pc+1)=='\n') /* end of line */
1554#else
1555 if (*filter->pc=='\n') /* end of line */
1556#endif
1557 {
1558 data->character=string_cat(data->character,&dataCapacity,&data->length,CUS "\r\n",2);
1559#ifdef RFC_EOL
1560 filter->pc+=2;
1561#else
1562 ++filter->pc;
1563#endif
1564 ++filter->line;
1565#ifdef RFC_EOL
1566 if (*filter->pc=='.' && *(filter->pc+1)=='\r' && *(filter->pc+2)=='\n') /* end of string */
1567#else
1568 if (*filter->pc=='.' && *(filter->pc+1)=='\n') /* end of string */
1569#endif
1570 {
1571 int foo=data->length;
1572
1573 /* that way, there will be at least one character allocated */
1574 data->character=string_cat(data->character,&dataCapacity,&foo,CUS "",1);
1575#ifdef RFC_EOL
1576 filter->pc+=3;
1577#else
1578 filter->pc+=2;
1579#endif
1580 ++filter->line;
1581#ifdef ENCODED_CHARACTER
1582 if (filter->require_encoded_character
1583 && string_decode(filter,data)==-1)
1584 return -1;
1585#endif
1586 return 1;
1587 }
1588 else if (*filter->pc=='.' && *(filter->pc+1)=='.') /* remove dot stuffing */
1589 {
1590 data->character=string_cat(data->character,&dataCapacity,&data->length,CUS ".",1);
1591 filter->pc+=2;
1592 }
1593 }
1594 else /* regular character */
1595 {
1596 data->character=string_cat(data->character,&dataCapacity,&data->length,filter->pc,1);
1597 filter->pc++;
1598 }
1599 }
1600 filter->errmsg=CUS "missing end of multi line string";
1601 return -1;
1602 }
1603else return 0;
1604}
1605
1606
1607/*************************************************
1608* Parse a specific identifier *
1609*************************************************/
1610
1611/*
1612Token definition:
1613 identifier = (ALPHA / "_") *(ALPHA DIGIT "_")
1614
1615Arguments:
1616 filter points to the Sieve filter including its state
1617 id specifies identifier to match
1618
1619Returns: 1 success
1620 0 identifier not matched
1621*/
1622
1623static int parse_identifier(struct Sieve *filter, const uschar *id)
1624{
1625 size_t idlen=Ustrlen(id);
1626
1627 if (strncmpic(US filter->pc,US id,idlen)==0)
1628 {
1629 uschar next=filter->pc[idlen];
1630
1631 if ((next>='A' && next<='Z') || (next>='a' && next<='z') || next=='_' || (next>='0' && next<='9')) return 0;
1632 filter->pc+=idlen;
1633 return 1;
1634 }
1635 else return 0;
1636}
1637
1638
1639/*************************************************
1640* Parse a number *
1641*************************************************/
1642
1643/*
1644Token definition:
1645 number = 1*DIGIT [QUANTIFIER]
1646 QUANTIFIER = "K" / "M" / "G"
1647
1648Arguments:
1649 filter points to the Sieve filter including its state
1650 data returns value
1651
1652Returns: 1 success
1653 -1 no string list found
1654*/
1655
1656static int parse_number(struct Sieve *filter, unsigned long *data)
1657{
1658unsigned long d,u;
1659
1660if (*filter->pc>='0' && *filter->pc<='9')
1661 {
1662 uschar *e;
1663
1664 errno=0;
1665 d=Ustrtoul(filter->pc,&e,10);
1666 if (errno==ERANGE)
1667 {
1668 filter->errmsg=CUstrerror(ERANGE);
1669 return -1;
1670 }
1671 filter->pc=e;
1672 u=1;
1673 if (*filter->pc=='K') { u=1024; ++filter->pc; }
1674 else if (*filter->pc=='M') { u=1024*1024; ++filter->pc; }
1675 else if (*filter->pc=='G') { u=1024*1024*1024; ++filter->pc; }
1676 if (d>(ULONG_MAX/u))
1677 {
1678 filter->errmsg=CUstrerror(ERANGE);
1679 return -1;
1680 }
1681 d*=u;
1682 *data=d;
1683 return 1;
1684 }
1685else
1686 {
1687 filter->errmsg=CUS "missing number";
1688 return -1;
1689 }
1690}
1691
1692
1693/*************************************************
1694* Parse a string list *
1695*************************************************/
1696
1697/*
1698Grammar:
1699 string-list = "[" string *("," string) "]" / string
1700
1701Arguments:
1702 filter points to the Sieve filter including its state
1703 data returns string list
1704
1705Returns: 1 success
1706 -1 no string list found
1707*/
1708
1709static int parse_stringlist(struct Sieve *filter, struct String **data)
1710{
1711const uschar *orig=filter->pc;
1712int dataCapacity=0;
1713int dataLength=0;
1714struct String *d=(struct String*)0;
1715int m;
1716
1717if (*filter->pc=='[') /* string list */
1718 {
1719 ++filter->pc;
1720 for (;;)
1721 {
1722 if (parse_white(filter)==-1) goto error;
1723 if ((dataLength+1)>=dataCapacity) /* increase buffer */
1724 {
1725 struct String *new;
1726 int newCapacity; /* Don't amalgamate with next line; some compilers grumble */
1727 newCapacity=dataCapacity?(dataCapacity*=2):(dataCapacity=4);
1728 if ((new=(struct String*)store_get(sizeof(struct String)*newCapacity))==(struct String*)0)
1729 {
1730 filter->errmsg=CUstrerror(errno);
1731 goto error;
1732 }
1733 if (d) memcpy(new,d,sizeof(struct String)*dataLength);
1734 d=new;
1735 dataCapacity=newCapacity;
1736 }
1737 m=parse_string(filter,&d[dataLength]);
1738 if (m==0)
1739 {
1740 if (dataLength==0) break;
1741 else
1742 {
1743 filter->errmsg=CUS "missing string";
1744 goto error;
1745 }
1746 }
1747 else if (m==-1) goto error;
1748 else ++dataLength;
1749 if (parse_white(filter)==-1) goto error;
1750 if (*filter->pc==',') ++filter->pc;
1751 else break;
1752 }
1753 if (*filter->pc==']')
1754 {
1755 d[dataLength].character=(uschar*)0;
1756 d[dataLength].length=-1;
1757 ++filter->pc;
1758 *data=d;
1759 return 1;
1760 }
1761 else
1762 {
1763 filter->errmsg=CUS "missing closing bracket";
1764 goto error;
1765 }
1766 }
1767else /* single string */
1768 {
1769 if ((d=store_get(sizeof(struct String)*2))==(struct String*)0)
1770 {
1771 return -1;
1772 }
1773 m=parse_string(filter,&d[0]);
1774 if (m==-1)
1775 {
1776 return -1;
1777 }
1778 else if (m==0)
1779 {
1780 filter->pc=orig;
1781 return 0;
1782 }
1783 else
1784 {
1785 d[1].character=(uschar*)0;
1786 d[1].length=-1;
1787 *data=d;
1788 return 1;
1789 }
1790 }
1791error:
1792filter->errmsg=CUS "missing string list";
1793return -1;
1794}
1795
1796
1797/*************************************************
1798* Parse an optional address part specifier *
1799*************************************************/
1800
1801/*
1802Grammar:
1803 address-part = ":localpart" / ":domain" / ":all"
1804 address-part =/ ":user" / ":detail"
1805
1806Arguments:
1807 filter points to the Sieve filter including its state
1808 a returns address part specified
1809
1810Returns: 1 success
1811 0 no comparator found
1812 -1 syntax error
1813*/
1814
1815static int parse_addresspart(struct Sieve *filter, enum AddressPart *a)
1816{
1817#ifdef SUBADDRESS
1818if (parse_identifier(filter,CUS ":user")==1)
1819 {
1820 if (!filter->require_subaddress)
1821 {
1822 filter->errmsg=CUS "missing previous require \"subaddress\";";
1823 return -1;
1824 }
1825 *a=ADDRPART_USER;
1826 return 1;
1827 }
1828else if (parse_identifier(filter,CUS ":detail")==1)
1829 {
1830 if (!filter->require_subaddress)
1831 {
1832 filter->errmsg=CUS "missing previous require \"subaddress\";";
1833 return -1;
1834 }
1835 *a=ADDRPART_DETAIL;
1836 return 1;
1837 }
1838else
1839#endif
1840if (parse_identifier(filter,CUS ":localpart")==1)
1841 {
1842 *a=ADDRPART_LOCALPART;
1843 return 1;
1844 }
1845else if (parse_identifier(filter,CUS ":domain")==1)
1846 {
1847 *a=ADDRPART_DOMAIN;
1848 return 1;
1849 }
1850else if (parse_identifier(filter,CUS ":all")==1)
1851 {
1852 *a=ADDRPART_ALL;
1853 return 1;
1854 }
1855else return 0;
1856}
1857
1858
1859/*************************************************
1860* Parse an optional comparator *
1861*************************************************/
1862
1863/*
1864Grammar:
1865 comparator = ":comparator" <comparator-name: string>
1866
1867Arguments:
1868 filter points to the Sieve filter including its state
1869 c returns comparator
1870
1871Returns: 1 success
1872 0 no comparator found
1873 -1 incomplete comparator found
1874*/
1875
1876static int parse_comparator(struct Sieve *filter, enum Comparator *c)
1877{
1878struct String comparator_name;
1879
1880if (parse_identifier(filter,CUS ":comparator")==0) return 0;
1881if (parse_white(filter)==-1) return -1;
1882switch (parse_string(filter,&comparator_name))
1883 {
1884 case -1: return -1;
1885 case 0:
1886 {
1887 filter->errmsg=CUS "missing comparator";
1888 return -1;
1889 }
1890 default:
1891 {
1892 int match;
1893
1894 if (eq_asciicase(&comparator_name,&str_ioctet,0))
1895 {
1896 *c=COMP_OCTET;
1897 match=1;
1898 }
1899 else if (eq_asciicase(&comparator_name,&str_iascii_casemap,0))
1900 {
1901 *c=COMP_EN_ASCII_CASEMAP;
1902 match=1;
1903 }
1904 else if (eq_asciicase(&comparator_name,&str_enascii_casemap,0))
1905 {
1906 *c=COMP_EN_ASCII_CASEMAP;
1907 match=1;
1908 }
1909 else if (eq_asciicase(&comparator_name,&str_iascii_numeric,0))
1910 {
1911 *c=COMP_ASCII_NUMERIC;
1912 match=1;
1913 }
1914 else
1915 {
1916 filter->errmsg=CUS "invalid comparator";
1917 match=-1;
1918 }
1919 return match;
1920 }
1921 }
1922}
1923
1924
1925/*************************************************
1926* Parse an optional match type *
1927*************************************************/
1928
1929/*
1930Grammar:
1931 match-type = ":is" / ":contains" / ":matches"
1932
1933Arguments:
1934 filter points to the Sieve filter including its state
1935 m returns match type
1936
1937Returns: 1 success
1938 0 no match type found
1939*/
1940
1941static int parse_matchtype(struct Sieve *filter, enum MatchType *m)
1942{
1943 if (parse_identifier(filter,CUS ":is")==1)
1944 {
1945 *m=MATCH_IS;
1946 return 1;
1947 }
1948 else if (parse_identifier(filter,CUS ":contains")==1)
1949 {
1950 *m=MATCH_CONTAINS;
1951 return 1;
1952 }
1953 else if (parse_identifier(filter,CUS ":matches")==1)
1954 {
1955 *m=MATCH_MATCHES;
1956 return 1;
1957 }
1958 else return 0;
1959}
1960
1961
1962/*************************************************
1963* Parse and interpret an optional test list *
1964*************************************************/
1965
1966/*
1967Grammar:
1968 test-list = "(" test *("," test) ")"
1969
1970Arguments:
1971 filter points to the Sieve filter including its state
1972 n total number of tests
1973 num_true number of passed tests
1974 exec Execute parsed statements
1975
1976Returns: 1 success
1977 0 no test list found
1978 -1 syntax or execution error
1979*/
1980
1981static int parse_testlist(struct Sieve *filter, int *n, int *num_true, int exec)
1982{
1983if (parse_white(filter)==-1) return -1;
1984if (*filter->pc=='(')
1985 {
1986 ++filter->pc;
1987 *n=0;
1988 *num_true=0;
1989 for (;;)
1990 {
1991 int cond;
1992
1993 switch (parse_test(filter,&cond,exec))
1994 {
1995 case -1: return -1;
1996 case 0: filter->errmsg=CUS "missing test"; return -1;
1997 default: ++*n; if (cond) ++*num_true; break;
1998 }
1999 if (parse_white(filter)==-1) return -1;
2000 if (*filter->pc==',') ++filter->pc;
2001 else break;
2002 }
2003 if (*filter->pc==')')
2004 {
2005 ++filter->pc;
2006 return 1;
2007 }
2008 else
2009 {
2010 filter->errmsg=CUS "missing closing paren";
2011 return -1;
2012 }
2013 }
2014else return 0;
2015}
2016
2017
2018/*************************************************
2019* Parse and interpret an optional test *
2020*************************************************/
2021
2022/*
2023Arguments:
2024 filter points to the Sieve filter including its state
2025 cond returned condition status
2026 exec Execute parsed statements
2027
2028Returns: 1 success
2029 0 no test found
2030 -1 syntax or execution error
2031*/
2032
2033static int parse_test(struct Sieve *filter, int *cond, int exec)
2034{
2035if (parse_white(filter)==-1) return -1;
2036if (parse_identifier(filter,CUS "address"))
2037 {
2038 /*
2039 address-test = "address" { [address-part] [comparator] [match-type] }
2040 <header-list: string-list> <key-list: string-list>
2041
2042 header-list From, To, Cc, Bcc, Sender, Resent-From, Resent-To
2043 */
2044
2045 enum AddressPart addressPart=ADDRPART_ALL;
2046 enum Comparator comparator=COMP_EN_ASCII_CASEMAP;
2047 enum MatchType matchType=MATCH_IS;
2048 struct String *hdr,*h,*key,*k;
2049 int m;
2050 int ap=0,co=0,mt=0;
2051
2052 for (;;)
2053 {
2054 if (parse_white(filter)==-1) return -1;
2055 if ((m=parse_addresspart(filter,&addressPart))!=0)
2056 {
2057 if (m==-1) return -1;
2058 if (ap)
2059 {
2060 filter->errmsg=CUS "address part already specified";
2061 return -1;
2062 }
2063 else ap=1;
2064 }
2065 else if ((m=parse_comparator(filter,&comparator))!=0)
2066 {
2067 if (m==-1) return -1;
2068 if (co)
2069 {
2070 filter->errmsg=CUS "comparator already specified";
2071 return -1;
2072 }
2073 else co=1;
2074 }
2075 else if ((m=parse_matchtype(filter,&matchType))!=0)
2076 {
2077 if (m==-1) return -1;
2078 if (mt)
2079 {
2080 filter->errmsg=CUS "match type already specified";
2081 return -1;
2082 }
2083 else mt=1;
2084 }
2085 else break;
2086 }
2087 if (parse_white(filter)==-1) return -1;
2088 if ((m=parse_stringlist(filter,&hdr))!=1)
2089 {
2090 if (m==0) filter->errmsg=CUS "header string list expected";
2091 return -1;
2092 }
2093 if (parse_white(filter)==-1) return -1;
2094 if ((m=parse_stringlist(filter,&key))!=1)
2095 {
2096 if (m==0) filter->errmsg=CUS "key string list expected";
2097 return -1;
2098 }
2099 *cond=0;
2100 for (h=hdr; h->length!=-1 && !*cond; ++h)
2101 {
2102 uschar *header_value=(uschar*)0,*extracted_addr,*end_addr;
2103
2104 if
2105 (
2106 !eq_asciicase(h,&str_from,0)
2107 && !eq_asciicase(h,&str_to,0)
2108 && !eq_asciicase(h,&str_cc,0)
2109 && !eq_asciicase(h,&str_bcc,0)
2110 && !eq_asciicase(h,&str_sender,0)
2111 && !eq_asciicase(h,&str_resent_from,0)
2112 && !eq_asciicase(h,&str_resent_to,0)
2113 )
2114 {
2115 filter->errmsg=CUS "invalid header field";
2116 return -1;
2117 }
2118 if (exec)
2119 {
2120 /* We are only interested in addresses below, so no MIME decoding */
2121 header_value=expand_string(string_sprintf("$rheader_%s",quote(h)));
2122 if (header_value == NULL)
2123 {
2124 filter->errmsg=CUS "header string expansion failed";
2125 return -1;
2126 }
2127 parse_allow_group = TRUE;
2128 while (*header_value && !*cond)
2129 {
2130 uschar *error;
2131 int start, end, domain;
2132 int saveend;
2133 uschar *part=NULL;
2134
2135 end_addr = parse_find_address_end(header_value, FALSE);
2136 saveend = *end_addr;
2137 *end_addr = 0;
2138 extracted_addr = parse_extract_address(header_value, &error, &start, &end, &domain, FALSE);
2139
2140 if (extracted_addr) switch (addressPart)
2141 {
2142 case ADDRPART_ALL: part=extracted_addr; break;
2143#ifdef SUBADDRESS
2144 case ADDRPART_USER:
2145#endif
2146 case ADDRPART_LOCALPART: part=extracted_addr; part[domain-1]='\0'; break;
2147 case ADDRPART_DOMAIN: part=extracted_addr+domain; break;
2148#ifdef SUBADDRESS
2149 case ADDRPART_DETAIL: part=NULL; break;
2150#endif
2151 }
2152
2153 *end_addr = saveend;
2154 if (part)
2155 {
2156 for (k=key; k->length!=-1; ++k)
2157 {
2158 struct String partStr;
2159
2160 partStr.character=part;
2161 partStr.length=Ustrlen(part);
2162 if (extracted_addr)
2163 {
2164 *cond=compare(filter,k,&partStr,comparator,matchType);
2165 if (*cond==-1) return -1;
2166 if (*cond) break;
2167 }
2168 }
2169 }
2170 if (saveend == 0) break;
2171 header_value = end_addr + 1;
2172 }
2173 parse_allow_group = FALSE;
2174 parse_found_group = FALSE;
2175 }
2176 }
2177 return 1;
2178 }
2179else if (parse_identifier(filter,CUS "allof"))
2180 {
2181 /*
2182 allof-test = "allof" <tests: test-list>
2183 */
2184
2185 int n,num_true;
2186
2187 switch (parse_testlist(filter,&n,&num_true,exec))
2188 {
2189 case -1: return -1;
2190 case 0: filter->errmsg=CUS "missing test list"; return -1;
2191 default: *cond=(n==num_true); return 1;
2192 }
2193 }
2194else if (parse_identifier(filter,CUS "anyof"))
2195 {
2196 /*
2197 anyof-test = "anyof" <tests: test-list>
2198 */
2199
2200 int n,num_true;
2201
2202 switch (parse_testlist(filter,&n,&num_true,exec))
2203 {
2204 case -1: return -1;
2205 case 0: filter->errmsg=CUS "missing test list"; return -1;
2206 default: *cond=(num_true>0); return 1;
2207 }
2208 }
2209else if (parse_identifier(filter,CUS "exists"))
2210 {
2211 /*
2212 exists-test = "exists" <header-names: string-list>
2213 */
2214
2215 struct String *hdr,*h;
2216 int m;
2217
2218 if (parse_white(filter)==-1) return -1;
2219 if ((m=parse_stringlist(filter,&hdr))!=1)
2220 {
2221 if (m==0) filter->errmsg=CUS "header string list expected";
2222 return -1;
2223 }
2224 if (exec)
2225 {
2226 *cond=1;
2227 for (h=hdr; h->length!=-1 && *cond; ++h)
2228 {
2229 uschar *header_def;
2230
2231 header_def=expand_string(string_sprintf("${if def:header_%s {true}{false}}",quote(h)));
2232 if (header_def == NULL)
2233 {
2234 filter->errmsg=CUS "header string expansion failed";
2235 return -1;
2236 }
2237 if (Ustrcmp(header_def,"false")==0) *cond=0;
2238 }
2239 }
2240 return 1;
2241 }
2242else if (parse_identifier(filter,CUS "false"))
2243 {
2244 /*
2245 false-test = "false"
2246 */
2247
2248 *cond=0;
2249 return 1;
2250 }
2251else if (parse_identifier(filter,CUS "header"))
2252 {
2253 /*
2254 header-test = "header" { [comparator] [match-type] }
2255 <header-names: string-list> <key-list: string-list>
2256 */
2257
2258 enum Comparator comparator=COMP_EN_ASCII_CASEMAP;
2259 enum MatchType matchType=MATCH_IS;
2260 struct String *hdr,*h,*key,*k;
2261 int m;
2262 int co=0,mt=0;
2263
2264 for (;;)
2265 {
2266 if (parse_white(filter)==-1) return -1;
2267 if ((m=parse_comparator(filter,&comparator))!=0)
2268 {
2269 if (m==-1) return -1;
2270 if (co)
2271 {
2272 filter->errmsg=CUS "comparator already specified";
2273 return -1;
2274 }
2275 else co=1;
2276 }
2277 else if ((m=parse_matchtype(filter,&matchType))!=0)
2278 {
2279 if (m==-1) return -1;
2280 if (mt)
2281 {
2282 filter->errmsg=CUS "match type already specified";
2283 return -1;
2284 }
2285 else mt=1;
2286 }
2287 else break;
2288 }
2289 if (parse_white(filter)==-1) return -1;
2290 if ((m=parse_stringlist(filter,&hdr))!=1)
2291 {
2292 if (m==0) filter->errmsg=CUS "header string list expected";
2293 return -1;
2294 }
2295 if (parse_white(filter)==-1) return -1;
2296 if ((m=parse_stringlist(filter,&key))!=1)
2297 {
2298 if (m==0) filter->errmsg=CUS "key string list expected";
2299 return -1;
2300 }
2301 *cond=0;
2302 for (h=hdr; h->length!=-1 && !*cond; ++h)
2303 {
2304 if (!is_header(h))
2305 {
2306 filter->errmsg=CUS "invalid header field";
2307 return -1;
2308 }
2309 if (exec)
2310 {
2311 struct String header_value;
2312 uschar *header_def;
2313
2314 expand_header(&header_value,h);
2315 header_def=expand_string(string_sprintf("${if def:header_%s {true}{false}}",quote(h)));
2316 if (header_value.character == NULL || header_def == NULL)
2317 {
2318 filter->errmsg=CUS "header string expansion failed";
2319 return -1;
2320 }
2321 for (k=key; k->length!=-1; ++k)
2322 {
2323 if (Ustrcmp(header_def,"true")==0)
2324 {
2325 *cond=compare(filter,k,&header_value,comparator,matchType);
2326 if (*cond==-1) return -1;
2327 if (*cond) break;
2328 }
2329 }
2330 }
2331 }
2332 return 1;
2333 }
2334else if (parse_identifier(filter,CUS "not"))
2335 {
2336 if (parse_white(filter)==-1) return -1;
2337 switch (parse_test(filter,cond,exec))
2338 {
2339 case -1: return -1;
2340 case 0: filter->errmsg=CUS "missing test"; return -1;
2341 default: *cond=!*cond; return 1;
2342 }
2343 }
2344else if (parse_identifier(filter,CUS "size"))
2345 {
2346 /*
2347 relop = ":over" / ":under"
2348 size-test = "size" relop <limit: number>
2349 */
2350
2351 unsigned long limit;
2352 int overNotUnder;
2353
2354 if (parse_white(filter)==-1) return -1;
2355 if (parse_identifier(filter,CUS ":over")) overNotUnder=1;
2356 else if (parse_identifier(filter,CUS ":under")) overNotUnder=0;
2357 else
2358 {
2359 filter->errmsg=CUS "missing :over or :under";
2360 return -1;
2361 }
2362 if (parse_white(filter)==-1) return -1;
2363 if (parse_number(filter,&limit)==-1) return -1;
2364 *cond=(overNotUnder ? (message_size>limit) : (message_size<limit));
2365 return 1;
2366 }
2367else if (parse_identifier(filter,CUS "true"))
2368 {
2369 *cond=1;
2370 return 1;
2371 }
2372else if (parse_identifier(filter,CUS "envelope"))
2373 {
2374 /*
2375 envelope-test = "envelope" { [comparator] [address-part] [match-type] }
2376 <envelope-part: string-list> <key-list: string-list>
2377
2378 envelope-part is case insensitive "from" or "to"
2379#ifdef ENVELOPE_AUTH
2380 envelope-part =/ "auth"
2381#endif
2382 */
2383
2384 enum Comparator comparator=COMP_EN_ASCII_CASEMAP;
2385 enum AddressPart addressPart=ADDRPART_ALL;
2386 enum MatchType matchType=MATCH_IS;
2387 struct String *env,*e,*key,*k;
2388 int m;
2389 int co=0,ap=0,mt=0;
2390
2391 if (!filter->require_envelope)
2392 {
2393 filter->errmsg=CUS "missing previous require \"envelope\";";
2394 return -1;
2395 }
2396 for (;;)
2397 {
2398 if (parse_white(filter)==-1) return -1;
2399 if ((m=parse_comparator(filter,&comparator))!=0)
2400 {
2401 if (m==-1) return -1;
2402 if (co)
2403 {
2404 filter->errmsg=CUS "comparator already specified";
2405 return -1;
2406 }
2407 else co=1;
2408 }
2409 else if ((m=parse_addresspart(filter,&addressPart))!=0)
2410 {
2411 if (m==-1) return -1;
2412 if (ap)
2413 {
2414 filter->errmsg=CUS "address part already specified";
2415 return -1;
2416 }
2417 else ap=1;
2418 }
2419 else if ((m=parse_matchtype(filter,&matchType))!=0)
2420 {
2421 if (m==-1) return -1;
2422 if (mt)
2423 {
2424 filter->errmsg=CUS "match type already specified";
2425 return -1;
2426 }
2427 else mt=1;
2428 }
2429 else break;
2430 }
2431 if (parse_white(filter)==-1) return -1;
2432 if ((m=parse_stringlist(filter,&env))!=1)
2433 {
2434 if (m==0) filter->errmsg=CUS "envelope string list expected";
2435 return -1;
2436 }
2437 if (parse_white(filter)==-1) return -1;
2438 if ((m=parse_stringlist(filter,&key))!=1)
2439 {
2440 if (m==0) filter->errmsg=CUS "key string list expected";
2441 return -1;
2442 }
2443 *cond=0;
2444 for (e=env; e->length!=-1 && !*cond; ++e)
2445 {
2446 const uschar *envelopeExpr=CUS 0;
2447 uschar *envelope=US 0;
2448
2449 if (eq_asciicase(e,&str_from,0))
2450 {
2451 switch (addressPart)
2452 {
2453 case ADDRPART_ALL: envelopeExpr=CUS "$sender_address"; break;
2454#ifdef SUBADDRESS
2455 case ADDRPART_USER:
2456#endif
2457 case ADDRPART_LOCALPART: envelopeExpr=CUS "${local_part:$sender_address}"; break;
2458 case ADDRPART_DOMAIN: envelopeExpr=CUS "${domain:$sender_address}"; break;
2459#ifdef SUBADDRESS
2460 case ADDRPART_DETAIL: envelopeExpr=CUS 0; break;
2461#endif
2462 }
2463 }
2464 else if (eq_asciicase(e,&str_to,0))
2465 {
2466 switch (addressPart)
2467 {
2468 case ADDRPART_ALL: envelopeExpr=CUS "$local_part_prefix$local_part$local_part_suffix@$domain"; break;
2469#ifdef SUBADDRESS
2470 case ADDRPART_USER: envelopeExpr=filter->useraddress; break;
2471 case ADDRPART_DETAIL: envelopeExpr=filter->subaddress; break;
2472#endif
2473 case ADDRPART_LOCALPART: envelopeExpr=CUS "$local_part_prefix$local_part$local_part_suffix"; break;
2474 case ADDRPART_DOMAIN: envelopeExpr=CUS "$domain"; break;
2475 }
2476 }
2477#ifdef ENVELOPE_AUTH
2478 else if (eq_asciicase(e,&str_auth,0))
2479 {
2480 switch (addressPart)
2481 {
2482 case ADDRPART_ALL: envelopeExpr=CUS "$authenticated_sender"; break;
2483#ifdef SUBADDRESS
2484 case ADDRPART_USER:
2485#endif
2486 case ADDRPART_LOCALPART: envelopeExpr=CUS "${local_part:$authenticated_sender}"; break;
2487 case ADDRPART_DOMAIN: envelopeExpr=CUS "${domain:$authenticated_sender}"; break;
2488#ifdef SUBADDRESS
2489 case ADDRPART_DETAIL: envelopeExpr=CUS 0; break;
2490#endif
2491 }
2492 }
2493#endif
2494 else
2495 {
2496 filter->errmsg=CUS "invalid envelope string";
2497 return -1;
2498 }
2499 if (exec && envelopeExpr)
2500 {
2501 if ((envelope=expand_string(US envelopeExpr)) == NULL)
2502 {
2503 filter->errmsg=CUS "header string expansion failed";
2504 return -1;
2505 }
2506 for (k=key; k->length!=-1; ++k)
2507 {
2508 struct String envelopeStr;
2509
2510 envelopeStr.character=envelope;
2511 envelopeStr.length=Ustrlen(envelope);
2512 *cond=compare(filter,k,&envelopeStr,comparator,matchType);
2513 if (*cond==-1) return -1;
2514 if (*cond) break;
2515 }
2516 }
2517 }
2518 return 1;
2519 }
2520#ifdef ENOTIFY
2521else if (parse_identifier(filter,CUS "valid_notify_method"))
2522 {
2523 /*
2524 valid_notify_method = "valid_notify_method"
2525 <notification-uris: string-list>
2526 */
2527
2528 struct String *uris,*u;
2529 int m;
2530
2531 if (!filter->require_enotify)
2532 {
2533 filter->errmsg=CUS "missing previous require \"enotify\";";
2534 return -1;
2535 }
2536 if (parse_white(filter)==-1) return -1;
2537 if ((m=parse_stringlist(filter,&uris))!=1)
2538 {
2539 if (m==0) filter->errmsg=CUS "URI string list expected";
2540 return -1;
2541 }
2542 if (exec)
2543 {
2544 *cond=1;
2545 for (u=uris; u->length!=-1 && *cond; ++u)
2546 {
2547 string_item *recipient;
2548 struct String header,subject,body;
2549
2550 recipient=NULL;
2551 header.length=-1;
2552 header.character=(uschar*)0;
2553 subject.length=-1;
2554 subject.character=(uschar*)0;
2555 body.length=-1;
2556 body.character=(uschar*)0;
2557 if (parse_mailto_uri(filter,u->character,&recipient,&header,&subject,&body)!=1)
2558 *cond=0;
2559 }
2560 }
2561 return 1;
2562 }
2563else if (parse_identifier(filter,CUS "notify_method_capability"))
2564 {
2565 /*
2566 notify_method_capability = "notify_method_capability" [COMPARATOR] [MATCH-TYPE]
2567 <notification-uri: string>
2568 <notification-capability: string>
2569 <key-list: string-list>
2570 */
2571
2572 int m;
2573 int co=0,mt=0;
2574
2575 enum Comparator comparator=COMP_EN_ASCII_CASEMAP;
2576 enum MatchType matchType=MATCH_IS;
2577 struct String uri,capa,*keys,*k;
2578
2579 if (!filter->require_enotify)
2580 {
2581 filter->errmsg=CUS "missing previous require \"enotify\";";
2582 return -1;
2583 }
2584 for (;;)
2585 {
2586 if (parse_white(filter)==-1) return -1;
2587 if ((m=parse_comparator(filter,&comparator))!=0)
2588 {
2589 if (m==-1) return -1;
2590 if (co)
2591 {
2592 filter->errmsg=CUS "comparator already specified";
2593 return -1;
2594 }
2595 else co=1;
2596 }
2597 else if ((m=parse_matchtype(filter,&matchType))!=0)
2598 {
2599 if (m==-1) return -1;
2600 if (mt)
2601 {
2602 filter->errmsg=CUS "match type already specified";
2603 return -1;
2604 }
2605 else mt=1;
2606 }
2607 else break;
2608 }
2609 if ((m=parse_string(filter,&uri))!=1)
2610 {
2611 if (m==0) filter->errmsg=CUS "missing notification URI string";
2612 return -1;
2613 }
2614 if (parse_white(filter)==-1) return -1;
2615 if ((m=parse_string(filter,&capa))!=1)
2616 {
2617 if (m==0) filter->errmsg=CUS "missing notification capability string";
2618 return -1;
2619 }
2620 if (parse_white(filter)==-1) return -1;
2621 if ((m=parse_stringlist(filter,&keys))!=1)
2622 {
2623 if (m==0) filter->errmsg=CUS "missing key string list";
2624 return -1;
2625 }
2626 if (exec)
2627 {
2628 string_item *recipient;
2629 struct String header,subject,body;
2630
2631 *cond=0;
2632 recipient=NULL;
2633 header.length=-1;
2634 header.character=(uschar*)0;
2635 subject.length=-1;
2636 subject.character=(uschar*)0;
2637 body.length=-1;
2638 body.character=(uschar*)0;
2639 if (parse_mailto_uri(filter,uri.character,&recipient,&header,&subject,&body)==1)
2640 {
2641 if (eq_asciicase(&capa,&str_online,0)==1)
2642 for (k=keys; k->length!=-1; ++k)
2643 {
2644 *cond=compare(filter,k,&str_maybe,comparator,matchType);
2645 if (*cond==-1) return -1;
2646 if (*cond) break;
2647 }
2648 }
2649 }
2650 return 1;
2651 }
2652#endif
2653else return 0;
2654}
2655
2656
2657/*************************************************
2658* Parse and interpret an optional block *
2659*************************************************/
2660
2661/*
2662Arguments:
2663 filter points to the Sieve filter including its state
2664 exec Execute parsed statements
2665 generated where to hang newly-generated addresses
2666
2667Returns: 2 success by stop
2668 1 other success
2669 0 no block command found
2670 -1 syntax or execution error
2671*/
2672
2673static int parse_block(struct Sieve *filter, int exec,
2674 address_item **generated)
2675{
2676int r;
2677
2678if (parse_white(filter)==-1) return -1;
2679if (*filter->pc=='{')
2680 {
2681 ++filter->pc;
2682 if ((r=parse_commands(filter,exec,generated))==-1 || r==2) return r;
2683 if (*filter->pc=='}')
2684 {
2685 ++filter->pc;
2686 return 1;
2687 }
2688 else
2689 {
2690 filter->errmsg=CUS "expecting command or closing brace";
2691 return -1;
2692 }
2693 }
2694else return 0;
2695}
2696
2697
2698/*************************************************
2699* Match a semicolon *
2700*************************************************/
2701
2702/*
2703Arguments:
2704 filter points to the Sieve filter including its state
2705
2706Returns: 1 success
2707 -1 syntax error
2708*/
2709
2710static int parse_semicolon(struct Sieve *filter)
2711{
2712 if (parse_white(filter)==-1) return -1;
2713 if (*filter->pc==';')
2714 {
2715 ++filter->pc;
2716 return 1;
2717 }
2718 else
2719 {
2720 filter->errmsg=CUS "missing semicolon";
2721 return -1;
2722 }
2723}
2724
2725
2726/*************************************************
2727* Parse and interpret a Sieve command *
2728*************************************************/
2729
2730/*
2731Arguments:
2732 filter points to the Sieve filter including its state
2733 exec Execute parsed statements
2734 generated where to hang newly-generated addresses
2735
2736Returns: 2 success by stop
2737 1 other success
2738 -1 syntax or execution error
2739*/
2740static int parse_commands(struct Sieve *filter, int exec,
2741 address_item **generated)
2742{
2743while (*filter->pc)
2744 {
2745 if (parse_white(filter)==-1) return -1;
2746 if (parse_identifier(filter,CUS "if"))
2747 {
2748 /*
2749 if-command = "if" test block *( "elsif" test block ) [ else block ]
2750 */
2751
2752 int cond,m,unsuccessful;
2753
2754 /* test block */
2755 if (parse_white(filter)==-1) return -1;
2756 if ((m=parse_test(filter,&cond,exec))==-1) return -1;
2757 if (m==0)
2758 {
2759 filter->errmsg=CUS "missing test";
2760 return -1;
2761 }
2762 if ((filter_test != FTEST_NONE && debug_selector != 0) ||
2763 (debug_selector & D_filter) != 0)
2764 {
2765 if (exec) debug_printf("if %s\n",cond?"true":"false");
2766 }
2767 m=parse_block(filter,exec ? cond : 0, generated);
2768 if (m==-1 || m==2) return m;
2769 if (m==0)
2770 {
2771 filter->errmsg=CUS "missing block";
2772 return -1;
2773 }
2774 unsuccessful = !cond;
2775 for (;;) /* elsif test block */
2776 {
2777 if (parse_white(filter)==-1) return -1;
2778 if (parse_identifier(filter,CUS "elsif"))
2779 {
2780 if (parse_white(filter)==-1) return -1;
2781 m=parse_test(filter,&cond,exec && unsuccessful);
2782 if (m==-1 || m==2) return m;
2783 if (m==0)
2784 {
2785 filter->errmsg=CUS "missing test";
2786 return -1;
2787 }
2788 if ((filter_test != FTEST_NONE && debug_selector != 0) ||
2789 (debug_selector & D_filter) != 0)
2790 {
2791 if (exec) debug_printf("elsif %s\n",cond?"true":"false");
2792 }
2793 m=parse_block(filter,exec && unsuccessful ? cond : 0, generated);
2794 if (m==-1 || m==2) return m;
2795 if (m==0)
2796 {
2797 filter->errmsg=CUS "missing block";
2798 return -1;
2799 }
2800 if (exec && unsuccessful && cond) unsuccessful = 0;
2801 }
2802 else break;
2803 }
2804 /* else block */
2805 if (parse_white(filter)==-1) return -1;
2806 if (parse_identifier(filter,CUS "else"))
2807 {
2808 m=parse_block(filter,exec && unsuccessful, generated);
2809 if (m==-1 || m==2) return m;
2810 if (m==0)
2811 {
2812 filter->errmsg=CUS "missing block";
2813 return -1;
2814 }
2815 }
2816 }
2817 else if (parse_identifier(filter,CUS "stop"))
2818 {
2819 /*
2820 stop-command = "stop" { stop-options } ";"
2821 stop-options =
2822 */
2823
2824 if (parse_semicolon(filter)==-1) return -1;
2825 if (exec)
2826 {
2827 filter->pc+=Ustrlen(filter->pc);
2828 return 2;
2829 }
2830 }
2831 else if (parse_identifier(filter,CUS "keep"))
2832 {
2833 /*
2834 keep-command = "keep" { keep-options } ";"
2835 keep-options =
2836 */
2837
2838 if (parse_semicolon(filter)==-1) return -1;
2839 if (exec)
2840 {
2841 add_addr(generated,US"inbox",1,0,0,0);
2842 filter->keep = 0;
2843 }
2844 }
2845 else if (parse_identifier(filter,CUS "discard"))
2846 {
2847 /*
2848 discard-command = "discard" { discard-options } ";"
2849 discard-options =
2850 */
2851
2852 if (parse_semicolon(filter)==-1) return -1;
2853 if (exec) filter->keep=0;
2854 }
2855 else if (parse_identifier(filter,CUS "redirect"))
2856 {
2857 /*
2858 redirect-command = "redirect" redirect-options "string" ";"
2859 redirect-options =
2860 redirect-options =) ":copy"
2861 */
2862
2863 struct String recipient;
2864 int m;
2865 int copy=0;
2866
2867 for (;;)
2868 {
2869 if (parse_white(filter)==-1) return -1;
2870 if (parse_identifier(filter,CUS ":copy")==1)
2871 {
2872 if (!filter->require_copy)
2873 {
2874 filter->errmsg=CUS "missing previous require \"copy\";";
2875 return -1;
2876 }
2877 copy=1;
2878 }
2879 else break;
2880 }
2881 if (parse_white(filter)==-1) return -1;
2882 if ((m=parse_string(filter,&recipient))!=1)
2883 {
2884 if (m==0) filter->errmsg=CUS "missing redirect recipient string";
2885 return -1;
2886 }
2887 if (strchr(CCS recipient.character,'@')==(char*)0)
2888 {
2889 filter->errmsg=CUS "unqualified recipient address";
2890 return -1;
2891 }
2892 if (exec)
2893 {
2894 add_addr(generated,recipient.character,0,0,0,0);
2895 if (!copy) filter->keep = 0;
2896 }
2897 if (parse_semicolon(filter)==-1) return -1;
2898 }
2899 else if (parse_identifier(filter,CUS "fileinto"))
2900 {
2901 /*
2902 fileinto-command = "fileinto" { fileinto-options } string ";"
2903 fileinto-options =
2904 fileinto-options =) [ ":copy" ]
2905 */
2906
2907 struct String folder;
2908 uschar *s;
2909 int m;
2910 unsigned long maxage, maxmessages, maxstorage;
2911 int copy=0;
2912
2913 maxage = maxmessages = maxstorage = 0;
2914 if (!filter->require_fileinto)
2915 {
2916 filter->errmsg=CUS "missing previous require \"fileinto\";";
2917 return -1;
2918 }
2919 for (;;)
2920 {
2921 if (parse_white(filter)==-1) return -1;
2922 if (parse_identifier(filter,CUS ":copy")==1)
2923 {
2924 if (!filter->require_copy)
2925 {
2926 filter->errmsg=CUS "missing previous require \"copy\";";
2927 return -1;
2928 }
2929 copy=1;
2930 }
2931 else break;
2932 }
2933 if (parse_white(filter)==-1) return -1;
2934 if ((m=parse_string(filter,&folder))!=1)
2935 {
2936 if (m==0) filter->errmsg=CUS "missing fileinto folder string";
2937 return -1;
2938 }
2939 m=0; s=folder.character;
2940 if (folder.length==0) m=1;
2941 if (Ustrcmp(s,"..")==0 || Ustrncmp(s,"../",3)==0) m=1;
2942 else while (*s)
2943 {
2944 if (Ustrcmp(s,"/..")==0 || Ustrncmp(s,"/../",4)==0) { m=1; break; }
2945 ++s;
2946 }
2947 if (m)
2948 {
2949 filter->errmsg=CUS "invalid folder";
2950 return -1;
2951 }
2952 if (exec)
2953 {
2954 add_addr(generated, folder.character, 1, maxage, maxmessages, maxstorage);
2955 if (!copy) filter->keep = 0;
2956 }
2957 if (parse_semicolon(filter)==-1) return -1;
2958 }
2959#ifdef ENOTIFY
2960 else if (parse_identifier(filter,CUS "notify"))
2961 {
2962 /*
2963 notify-command = "notify" { notify-options } <method: string> ";"
2964 notify-options = [":from" string]
2965 [":importance" <"1" / "2" / "3">]
2966 [":options" 1*(string-list / number)]
2967 [":message" string]
2968 */
2969
2970 int m;
2971 struct String from;
2972 struct String importance;
2973 struct String *options;
2974 struct String message;
2975 struct String method;
2976 struct Notification *already;
2977 string_item *recipient;
2978 struct String header;
2979 struct String subject;
2980 struct String body;
2981 uschar *envelope_from;
2982 struct String auto_submitted_value;
2983 uschar *auto_submitted_def;
2984
2985 if (!filter->require_enotify)
2986 {
2987 filter->errmsg=CUS "missing previous require \"enotify\";";
2988 return -1;
2989 }
2990 from.character=(uschar*)0;
2991 from.length=-1;
2992 importance.character=(uschar*)0;
2993 importance.length=-1;
2994 options=(struct String*)0;
2995 message.character=(uschar*)0;
2996 message.length=-1;
2997 recipient=NULL;
2998 header.length=-1;
2999 header.character=(uschar*)0;
3000 subject.length=-1;
3001 subject.character=(uschar*)0;
3002 body.length=-1;
3003 body.character=(uschar*)0;
3004 envelope_from=(sender_address && sender_address[0]) ? expand_string(US"$local_part_prefix$local_part$local_part_suffix@$domain") : US "";
3005 for (;;)
3006 {
3007 if (parse_white(filter)==-1) return -1;
3008 if (parse_identifier(filter,CUS ":from")==1)
3009 {
3010 if (parse_white(filter)==-1) return -1;
3011 if ((m=parse_string(filter,&from))!=1)
3012 {
3013 if (m==0) filter->errmsg=CUS "from string expected";
3014 return -1;
3015 }
3016 }
3017 else if (parse_identifier(filter,CUS ":importance")==1)
3018 {
3019 if (parse_white(filter)==-1) return -1;
3020 if ((m=parse_string(filter,&importance))!=1)
3021 {
3022 if (m==0) filter->errmsg=CUS "importance string expected";
3023 return -1;
3024 }
3025 if (importance.length!=1 || importance.character[0]<'1' || importance.character[0]>'3')
3026 {
3027 filter->errmsg=CUS "invalid importance";
3028 return -1;
3029 }
3030 }
3031 else if (parse_identifier(filter,CUS ":options")==1)
3032 {
3033 if (parse_white(filter)==-1) return -1;
3034 }
3035 else if (parse_identifier(filter,CUS ":message")==1)
3036 {
3037 if (parse_white(filter)==-1) return -1;
3038 if ((m=parse_string(filter,&message))!=1)
3039 {
3040 if (m==0) filter->errmsg=CUS "message string expected";
3041 return -1;
3042 }
3043 }
3044 else break;
3045 }
3046 if (parse_white(filter)==-1) return -1;
3047 if ((m=parse_string(filter,&method))!=1)
3048 {
3049 if (m==0) filter->errmsg=CUS "missing method string";
3050 return -1;
3051 }
3052 if (parse_semicolon(filter)==-1) return -1;
3053 if (parse_mailto_uri(filter,method.character,&recipient,&header,&subject,&body)!=1)
3054 return -1;
3055 if (exec)
3056 {
3057 if (message.length==-1) message=subject;
3058 if (message.length==-1) expand_header(&message,&str_subject);
3059 expand_header(&auto_submitted_value,&str_auto_submitted);
3060 auto_submitted_def=expand_string(string_sprintf("${if def:header_auto-submitted {true}{false}}"));
3061 if (auto_submitted_value.character == NULL || auto_submitted_def == NULL)
3062 {
3063 filter->errmsg=CUS "header string expansion failed";
3064 return -1;
3065 }
3066 if (Ustrcmp(auto_submitted_def,"true")!=0 || Ustrcmp(auto_submitted_value.character,"no")==0)
3067 {
3068 for (already=filter->notified; already; already=already->next)
3069 {
3070 if (already->method.length==method.length
3071 && (method.length==-1 || Ustrcmp(already->method.character,method.character)==0)
3072 && already->importance.length==importance.length
3073 && (importance.length==-1 || Ustrcmp(already->importance.character,importance.character)==0)
3074 && already->message.length==message.length
3075 && (message.length==-1 || Ustrcmp(already->message.character,message.character)==0))
3076 break;
3077 }
3078 if (already==(struct Notification*)0)
3079 /* New notification, process it */
3080 {
3081 struct Notification *sent;
3082 sent=store_get(sizeof(struct Notification));
3083 sent->method=method;
3084 sent->importance=importance;
3085 sent->message=message;
3086 sent->next=filter->notified;
3087 filter->notified=sent;
3088 #ifndef COMPILE_SYNTAX_CHECKER
3089 if (filter_test == FTEST_NONE)
3090 {
3091 string_item *p;
3092 int pid,fd;
3093
3094 if ((pid = child_open_exim2(&fd,envelope_from,envelope_from))>=1)
3095 {
3096 FILE *f;
3097 uschar *buffer;
3098 int buffer_capacity;
3099
3100 f = fdopen(fd, "wb");
3101 fprintf(f,"From: %s\n",from.length==-1 ? expand_string(US"$local_part_prefix$local_part$local_part_suffix@$domain") : from.character);
3102 for (p=recipient; p; p=p->next) fprintf(f,"To: %s\n",p->text);
3103 fprintf(f,"Auto-Submitted: auto-notified; %s\n",filter->enotify_mailto_owner);
3104 if (header.length>0) fprintf(f,"%s",header.character);
3105 if (message.length==-1)
3106 {
3107 message.character=US"Notification";
3108 message.length=Ustrlen(message.character);
3109 }
3110 /* Allocation is larger than neccessary, but enough even for split MIME words */
3111 buffer_capacity=32+4*message.length;
3112 buffer=store_get(buffer_capacity);
3113 if (message.length!=-1) fprintf(f,"Subject: %s\n",parse_quote_2047(message.character, message.length, US"utf-8", buffer, buffer_capacity, TRUE));
3114 fprintf(f,"\n");
3115 if (body.length>0) fprintf(f,"%s\n",body.character);
3116 fflush(f);
3117 (void)fclose(f);
3118 (void)child_close(pid, 0);
3119 }
3120 }
3121 if ((filter_test != FTEST_NONE && debug_selector != 0) || (debug_selector & D_filter) != 0)
3122 {
3123 debug_printf("Notification to `%s': '%s'.\n",method.character,message.length!=-1 ? message.character : CUS "");
3124 }
3125#endif
3126 }
3127 else
3128 {
3129 if ((filter_test != FTEST_NONE && debug_selector != 0) || (debug_selector & D_filter) != 0)
3130 {
3131 debug_printf("Repeated notification to `%s' ignored.\n",method.character);
3132 }
3133 }
3134 }
3135 else
3136 {
3137 if ((filter_test != FTEST_NONE && debug_selector != 0) || (debug_selector & D_filter) != 0)
3138 {
3139 debug_printf("Ignoring notification, triggering message contains Auto-submitted: field.\n");
3140 }
3141 }
3142 }
3143 }
3144#endif
3145#ifdef VACATION
3146 else if (parse_identifier(filter,CUS "vacation"))
3147 {
3148 /*
3149 vacation-command = "vacation" { vacation-options } <reason: string> ";"
3150 vacation-options = [":days" number]
3151 [":subject" string]
3152 [":from" string]
3153 [":addresses" string-list]
3154 [":mime"]
3155 [":handle" string]
3156 */
3157
3158 int m;
3159 unsigned long days;
3160 struct String subject;
3161 struct String from;
3162 struct String *addresses;
3163 int reason_is_mime;
3164 string_item *aliases;
3165 struct String handle;
3166 struct String reason;
3167
3168 if (!filter->require_vacation)
3169 {
3170 filter->errmsg=CUS "missing previous require \"vacation\";";
3171 return -1;
3172 }
3173 if (exec)
3174 {
3175 if (filter->vacation_ran)
3176 {
3177 filter->errmsg=CUS "trying to execute vacation more than once";
3178 return -1;
3179 }
3180 filter->vacation_ran=1;
3181 }
3182 days=VACATION_MIN_DAYS>7 ? VACATION_MIN_DAYS : 7;
3183 subject.character=(uschar*)0;
3184 subject.length=-1;
3185 from.character=(uschar*)0;
3186 from.length=-1;
3187 addresses=(struct String*)0;
3188 aliases=NULL;
3189 reason_is_mime=0;
3190 handle.character=(uschar*)0;
3191 handle.length=-1;
3192 for (;;)
3193 {
3194 if (parse_white(filter)==-1) return -1;
3195 if (parse_identifier(filter,CUS ":days")==1)
3196 {
3197 if (parse_white(filter)==-1) return -1;
3198 if (parse_number(filter,&days)==-1) return -1;
3199 if (days<VACATION_MIN_DAYS) days=VACATION_MIN_DAYS;
3200 else if (days>VACATION_MAX_DAYS) days=VACATION_MAX_DAYS;
3201 }
3202 else if (parse_identifier(filter,CUS ":subject")==1)
3203 {
3204 if (parse_white(filter)==-1) return -1;
3205 if ((m=parse_string(filter,&subject))!=1)
3206 {
3207 if (m==0) filter->errmsg=CUS "subject string expected";
3208 return -1;
3209 }
3210 }
3211 else if (parse_identifier(filter,CUS ":from")==1)
3212 {
3213 if (parse_white(filter)==-1) return -1;
3214 if ((m=parse_string(filter,&from))!=1)
3215 {
3216 if (m==0) filter->errmsg=CUS "from string expected";
3217 return -1;
3218 }
3219 if (check_mail_address(filter,&from)!=1)
3220 return -1;
3221 }
3222 else if (parse_identifier(filter,CUS ":addresses")==1)
3223 {
3224 struct String *a;
3225
3226 if (parse_white(filter)==-1) return -1;
3227 if ((m=parse_stringlist(filter,&addresses))!=1)
3228 {
3229 if (m==0) filter->errmsg=CUS "addresses string list expected";
3230 return -1;
3231 }
3232 for (a=addresses; a->length!=-1; ++a)
3233 {
3234 string_item *new;
3235
3236 new=store_get(sizeof(string_item));
3237 new->text=store_get(a->length+1);
3238 if (a->length) memcpy(new->text,a->character,a->length);
3239 new->text[a->length]='\0';
3240 new->next=aliases;
3241 aliases=new;
3242 }
3243 }
3244 else if (parse_identifier(filter,CUS ":mime")==1)
3245 reason_is_mime=1;
3246 else if (parse_identifier(filter,CUS ":handle")==1)
3247 {
3248 if (parse_white(filter)==-1) return -1;
3249 if ((m=parse_string(filter,&from))!=1)
3250 {
3251 if (m==0) filter->errmsg=CUS "handle string expected";
3252 return -1;
3253 }
3254 }
3255 else break;
3256 }
3257 if (parse_white(filter)==-1) return -1;
3258 if ((m=parse_string(filter,&reason))!=1)
3259 {
3260 if (m==0) filter->errmsg=CUS "missing reason string";
3261 return -1;
3262 }
3263 if (reason_is_mime)
3264 {
3265 uschar *s,*end;
3266
3267 for (s=reason.character,end=reason.character+reason.length; s<end && (*s&0x80)==0; ++s);
3268 if (s<end)
3269 {
3270 filter->errmsg=CUS "MIME reason string contains 8bit text";
3271 return -1;
3272 }
3273 }
3274 if (parse_semicolon(filter)==-1) return -1;
3275
3276 if (exec)
3277 {
3278 address_item *addr;
3279 int capacity,start;
3280 uschar *buffer;
3281 int buffer_capacity;
3282 struct String key;
3283 md5 base;
3284 uschar digest[16];
3285 uschar hexdigest[33];
3286 int i;
3287 uschar *once;
3288
3289 if (filter_personal(aliases,TRUE))
3290 {
3291 if (filter_test == FTEST_NONE)
3292 {
3293 /* ensure oncelog directory exists; failure will be detected later */
3294
3295 (void)directory_make(NULL, filter->vacation_directory, 0700, FALSE);
3296 }
3297 /* build oncelog filename */
3298
3299 key.character=(uschar*)0;
3300 key.length=0;
3301 capacity=0;
3302 if (handle.length==-1)
3303 {
3304 if (subject.length!=-1) key.character=string_cat(key.character,&capacity,&key.length,subject.character,subject.length);
3305 if (from.length!=-1) key.character=string_cat(key.character,&capacity,&key.length,from.character,from.length);
3306 key.character=string_cat(key.character,&capacity,&key.length,reason_is_mime?US"1":US"0",1);
3307 key.character=string_cat(key.character,&capacity,&key.length,reason.character,reason.length);
3308 }
3309 else
3310 key=handle;
3311 md5_start(&base);
3312 md5_end(&base, key.character, key.length, digest);
3313 for (i = 0; i < 16; i++) sprintf(CS (hexdigest+2*i), "%02X", digest[i]);
3314 if ((filter_test != FTEST_NONE && debug_selector != 0) || (debug_selector & D_filter) != 0)
3315 {
3316 debug_printf("Sieve: mail was personal, vacation file basename: %s\n", hexdigest);
3317 }
3318 if (filter_test == FTEST_NONE)
3319 {
3320 capacity=Ustrlen(filter->vacation_directory);
3321 start=capacity;
3322 once=string_cat(filter->vacation_directory,&capacity,&start,US"/",1);
3323 once=string_cat(once,&capacity,&start,hexdigest,33);
3324 once[start] = '\0';
3325
3326 /* process subject */
3327
3328 if (subject.length==-1)
3329 {
3330 uschar *subject_def;
3331
3332 subject_def=expand_string(US"${if def:header_subject {true}{false}}");
3333 if (Ustrcmp(subject_def,"true")==0)
3334 {
3335 expand_header(&subject,&str_subject);
3336 capacity=6;
3337 start=6;
3338 subject.character=string_cat(US"Auto: ",&capacity,&start,subject.character,subject.length);
3339 subject.length=start;
3340 }
3341 else
3342 {
3343 subject.character=US"Automated reply";
3344 subject.length=Ustrlen(subject.character);
3345 }
3346 }
3347
3348 /* add address to list of generated addresses */
3349
3350 addr = deliver_make_addr(string_sprintf(">%.256s", sender_address), FALSE);
3351 setflag(addr, af_pfr);
3352 setflag(addr, af_ignore_error);
3353 addr->next = *generated;
3354 *generated = addr;
3355 addr->reply = store_get(sizeof(reply_item));
3356 memset(addr->reply,0,sizeof(reply_item)); /* XXX */
3357 addr->reply->to = string_copy(sender_address);
3358 if (from.length==-1)
3359 addr->reply->from = expand_string(US"$local_part@$domain");
3360 else
3361 addr->reply->from = from.character;
3362 /* Allocation is larger than neccessary, but enough even for split MIME words */
3363 buffer_capacity=32+4*subject.length;
3364 buffer=store_get(buffer_capacity);
3365 addr->reply->subject=parse_quote_2047(subject.character, subject.length, US"utf-8", buffer, buffer_capacity, TRUE);
3366 addr->reply->oncelog=once;
3367 addr->reply->once_repeat=days*86400;
3368
3369 /* build body and MIME headers */
3370
3371 if (reason_is_mime)
3372 {
3373 uschar *mime_body,*reason_end;
3374 static const uschar nlnl[]="\r\n\r\n";
3375
3376 for
3377 (
3378 mime_body=reason.character,reason_end=reason.character+reason.length;
3379 mime_body<(reason_end-(sizeof(nlnl)-1)) && memcmp(mime_body,nlnl,(sizeof(nlnl)-1));
3380 ++mime_body
3381 );
3382 capacity = 0;
3383 start = 0;
3384 addr->reply->headers = string_cat(NULL,&capacity,&start,reason.character,mime_body-reason.character);
3385 addr->reply->headers[start] = '\0';
3386 capacity = 0;
3387 start = 0;
3388 if (mime_body+(sizeof(nlnl)-1)<reason_end) mime_body+=(sizeof(nlnl)-1);
3389 else mime_body=reason_end-1;
3390 addr->reply->text = string_cat(NULL,&capacity,&start,mime_body,reason_end-mime_body);
3391 addr->reply->text[start] = '\0';
3392 }
3393 else
3394 {
3395 struct String qp = { NULL, 0 }; /* Keep compiler happy (PH) */
3396
3397 capacity = 0;
3398 start = reason.length;
3399 addr->reply->headers = US"MIME-Version: 1.0\n"
3400 "Content-Type: text/plain;\n"
3401 "\tcharset=\"utf-8\"\n"
3402 "Content-Transfer-Encoding: quoted-printable";
3403 addr->reply->text = quoted_printable_encode(&reason,&qp)->character;
3404 }
3405 }
3406 }
3407 else if ((filter_test != FTEST_NONE && debug_selector != 0) || (debug_selector & D_filter) != 0)
3408 {
3409 debug_printf("Sieve: mail was not personal, vacation would ignore it\n");
3410 }
3411 }
3412 }
3413 else break;
3414#endif
3415 }
3416return 1;
3417}
3418
3419
3420/*************************************************
3421* Parse and interpret a sieve filter *
3422*************************************************/
3423
3424/*
3425Arguments:
3426 filter points to the Sieve filter including its state
3427 exec Execute parsed statements
3428 generated where to hang newly-generated addresses
3429
3430Returns: 1 success
3431 -1 syntax or execution error
3432*/
3433
3434static int
3435parse_start(struct Sieve *filter, int exec, address_item **generated)
3436{
3437filter->pc=filter->filter;
3438filter->line=1;
3439filter->keep=1;
3440filter->require_envelope=0;
3441filter->require_fileinto=0;
3442#ifdef ENCODED_CHARACTER
3443filter->require_encoded_character=0;
3444#endif
3445#ifdef ENVELOPE_AUTH
3446filter->require_envelope_auth=0;
3447#endif
3448#ifdef ENOTIFY
3449filter->require_enotify=0;
3450filter->notified=(struct Notification*)0;
3451#endif
3452#ifdef SUBADDRESS
3453filter->require_subaddress=0;
3454#endif
3455#ifdef VACATION
3456filter->require_vacation=0;
3457filter->vacation_ran=0;
3458#endif
3459filter->require_copy=0;
3460filter->require_iascii_numeric=0;
3461
3462if (parse_white(filter)==-1) return -1;
3463
3464if (exec && filter->vacation_directory != NULL && filter_test == FTEST_NONE)
3465 {
3466 DIR *oncelogdir;
3467 struct dirent *oncelog;
3468 struct stat properties;
3469 time_t now;
3470
3471 /* clean up old vacation log databases */
3472
3473 oncelogdir=opendir(CS filter->vacation_directory);
3474
3475 if (oncelogdir ==(DIR*)0 && errno != ENOENT)
3476 {
3477 filter->errmsg=CUS "unable to open vacation directory";
3478 return -1;
3479 }
3480
3481 if (oncelogdir != NULL)
3482 {
3483 time(&now);
3484
3485 while ((oncelog=readdir(oncelogdir))!=(struct dirent*)0)
3486 {
3487 if (strlen(oncelog->d_name)==32)
3488 {
3489 uschar *s=string_sprintf("%s/%s",filter->vacation_directory,oncelog->d_name);
3490 if (Ustat(s,&properties)==0 && (properties.st_mtime+VACATION_MAX_DAYS*86400)<now)
3491 Uunlink(s);
3492 }
3493 }
3494 closedir(oncelogdir);
3495 }
3496 }
3497
3498while (parse_identifier(filter,CUS "require"))
3499 {
3500 /*
3501 require-command = "require" <capabilities: string-list>
3502 */
3503
3504 struct String *cap,*check;
3505 int m;
3506
3507 if (parse_white(filter)==-1) return -1;
3508 if ((m=parse_stringlist(filter,&cap))!=1)
3509 {
3510 if (m==0) filter->errmsg=CUS "capability string list expected";
3511 return -1;
3512 }
3513 for (check=cap; check->character; ++check)
3514 {
3515 if (eq_octet(check,&str_envelope,0)) filter->require_envelope=1;
3516 else if (eq_octet(check,&str_fileinto,0)) filter->require_fileinto=1;
3517#ifdef ENCODED_CHARACTER
3518 else if (eq_octet(check,&str_encoded_character,0)) filter->require_encoded_character=1;
3519#endif
3520#ifdef ENVELOPE_AUTH
3521 else if (eq_octet(check,&str_envelope_auth,0)) filter->require_envelope_auth=1;
3522#endif
3523#ifdef ENOTIFY
3524 else if (eq_octet(check,&str_enotify,0))
3525 {
3526 if (filter->enotify_mailto_owner == NULL)
3527 {
3528 filter->errmsg=CUS "enotify disabled";
3529 return -1;
3530 }
3531 filter->require_enotify=1;
3532 }
3533#endif
3534#ifdef SUBADDRESS
3535 else if (eq_octet(check,&str_subaddress,0)) filter->require_subaddress=1;
3536#endif
3537#ifdef VACATION
3538 else if (eq_octet(check,&str_vacation,0))
3539 {
3540 if (filter_test == FTEST_NONE && filter->vacation_directory == NULL)
3541 {
3542 filter->errmsg=CUS "vacation disabled";
3543 return -1;
3544 }
3545 filter->require_vacation=1;
3546 }
3547#endif
3548 else if (eq_octet(check,&str_copy,0)) filter->require_copy=1;
3549 else if (eq_octet(check,&str_comparator_ioctet,0)) ;
3550 else if (eq_octet(check,&str_comparator_iascii_casemap,0)) ;
3551 else if (eq_octet(check,&str_comparator_enascii_casemap,0)) ;
3552 else if (eq_octet(check,&str_comparator_iascii_numeric,0)) filter->require_iascii_numeric=1;
3553 else
3554 {
3555 filter->errmsg=CUS "unknown capability";
3556 return -1;
3557 }
3558 }
3559 if (parse_semicolon(filter)==-1) return -1;
3560 }
3561 if (parse_commands(filter,exec,generated)==-1) return -1;
3562 if (*filter->pc)
3563 {
3564 filter->errmsg=CUS "syntax error";
3565 return -1;
3566 }
3567 return 1;
3568}
3569
3570
3571/*************************************************
3572* Interpret a sieve filter file *
3573*************************************************/
3574
3575/*
3576Arguments:
3577 filter points to the entire file, read into store as a single string
3578 options controls whether various special things are allowed, and requests
3579 special actions (not currently used)
3580 vacation_directory where to store vacation "once" files
3581 enotify_mailto_owner owner of mailto notifications
3582 useraddress string expression for :user part of address
3583 subaddress string expression for :subaddress part of address
3584 generated where to hang newly-generated addresses
3585 error where to pass back an error text
3586
3587Returns: FF_DELIVERED success, a significant action was taken
3588 FF_NOTDELIVERED success, no significant action
3589 FF_DEFER defer requested
3590 FF_FAIL fail requested
3591 FF_FREEZE freeze requested
3592 FF_ERROR there was a problem
3593*/
3594
3595int
3596sieve_interpret(uschar *filter, int options, uschar *vacation_directory,
3597 uschar *enotify_mailto_owner, uschar *useraddress, uschar *subaddress,
3598 address_item **generated, uschar **error)
3599{
3600struct Sieve sieve;
3601int r;
3602uschar *msg;
3603
3604options = options; /* Keep picky compilers happy */
3605error = error;
3606
3607DEBUG(D_route) debug_printf("Sieve: start of processing\n");
3608sieve.filter=filter;
3609
3610if (vacation_directory == NULL)
3611 sieve.vacation_directory = NULL;
3612else
3613 {
3614 sieve.vacation_directory=expand_string(vacation_directory);
3615 if (sieve.vacation_directory == NULL)
3616 {
3617 *error = string_sprintf("failed to expand \"%s\" "
3618 "(sieve_vacation_directory): %s", vacation_directory,
3619 expand_string_message);
3620 return FF_ERROR;
3621 }
3622 }
3623
3624if (enotify_mailto_owner == NULL)
3625 sieve.enotify_mailto_owner = NULL;
3626else
3627 {
3628 sieve.enotify_mailto_owner=expand_string(enotify_mailto_owner);
3629 if (sieve.enotify_mailto_owner == NULL)
3630 {
3631 *error = string_sprintf("failed to expand \"%s\" "
3632 "(sieve_enotify_mailto_owner): %s", enotify_mailto_owner,
3633 expand_string_message);
3634 return FF_ERROR;
3635 }
3636 }
3637
3638sieve.useraddress = useraddress == NULL ? CUS "$local_part_prefix$local_part$local_part_suffix" : useraddress;
3639sieve.subaddress = subaddress;
3640
3641#ifdef COMPILE_SYNTAX_CHECKER
3642if (parse_start(&sieve,0,generated)==1)
3643#else
3644if (parse_start(&sieve,1,generated)==1)
3645#endif
3646 {
3647 if (sieve.keep)
3648 {
3649 add_addr(generated,US"inbox",1,0,0,0);
3650 msg = string_sprintf("Implicit keep");
3651 r = FF_DELIVERED;
3652 }
3653 else
3654 {
3655 msg = string_sprintf("No implicit keep");
3656 r = FF_DELIVERED;
3657 }
3658 }
3659else
3660 {
3661 msg = string_sprintf("Sieve error: %s in line %d",sieve.errmsg,sieve.line);
3662#ifdef COMPILE_SYNTAX_CHECKER
3663 r = FF_ERROR;
3664 *error = msg;
3665#else
3666 add_addr(generated,US"inbox",1,0,0,0);
3667 r = FF_DELIVERED;
3668#endif
3669 }
3670
3671#ifndef COMPILE_SYNTAX_CHECKER
3672if (filter_test != FTEST_NONE) printf("%s\n", (const char*) msg);
3673 else debug_printf("%s\n", msg);
3674#endif
3675
3676DEBUG(D_route) debug_printf("Sieve: end of processing\n");
3677return r;
3678}
exim4 packaging