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1/*************************************************
2* Exim - an Internet mail transport agent *
3*************************************************/
4
5/* Copyright (c) Michael Haardt 2003 - 2015
6 * Copyright (c) The Exim Maintainers 2017
7 * See the file NOTICE for conditions of use and distribution.
8 */
9
10/* This code was contributed by Michael Haardt. */
11
12
13/* Sieve mail filter. */
14
15#include <ctype.h>
16#include <errno.h>
17#include <limits.h>
18#include <stdlib.h>
19#include <string.h>
20
21#include "exim.h"
22
23#if HAVE_ICONV
24#include <iconv.h>
25#endif
26
27/* Define this for RFC compliant \r\n end-of-line terminators. */
28/* Undefine it for UNIX-style \n end-of-line terminators (default). */
29#undef RFC_EOL
30
31/* Define this for development of the Sieve extension "encoded-character". */
32#define ENCODED_CHARACTER
33
34/* Define this for development of the Sieve extension "envelope-auth". */
35#undef ENVELOPE_AUTH
36
37/* Define this for development of the Sieve extension "enotify". */
38#define ENOTIFY
39
40/* Define this for the Sieve extension "subaddress". */
41#define SUBADDRESS
42
43/* Define this for the Sieve extension "vacation". */
44#define VACATION
45
46/* Must be >= 1 */
47#define VACATION_MIN_DAYS 1
48/* Must be >= VACATION_MIN_DAYS, must be > 7, should be > 30 */
49#define VACATION_MAX_DAYS 31
50
51/* Keep this at 75 to accept only RFC compliant MIME words. */
52/* Increase it if you want to match headers from buggy MUAs. */
53#define MIMEWORD_LENGTH 75
54
55struct Sieve
56 {
57 uschar *filter;
58 const uschar *pc;
59 int line;
60 const uschar *errmsg;
61 int keep;
62 int require_envelope;
63 int require_fileinto;
64#ifdef ENCODED_CHARACTER
65 int require_encoded_character;
66#endif
67#ifdef ENVELOPE_AUTH
68 int require_envelope_auth;
69#endif
70#ifdef ENOTIFY
71 int require_enotify;
72 struct Notification *notified;
73#endif
74 uschar *enotify_mailto_owner;
75#ifdef SUBADDRESS
76 int require_subaddress;
77#endif
78#ifdef VACATION
79 int require_vacation;
80 int vacation_ran;
81#endif
82 uschar *vacation_directory;
83 const uschar *subaddress;
84 const uschar *useraddress;
85 int require_copy;
86 int require_iascii_numeric;
87 };
88
89enum Comparator { COMP_OCTET, COMP_EN_ASCII_CASEMAP, COMP_ASCII_NUMERIC };
90enum MatchType { MATCH_IS, MATCH_CONTAINS, MATCH_MATCHES };
91#ifdef SUBADDRESS
92enum AddressPart { ADDRPART_USER, ADDRPART_DETAIL, ADDRPART_LOCALPART, ADDRPART_DOMAIN, ADDRPART_ALL };
93#else
94enum AddressPart { ADDRPART_LOCALPART, ADDRPART_DOMAIN, ADDRPART_ALL };
95#endif
96enum RelOp { LT, LE, EQ, GE, GT, NE };
97
98struct String
99 {
100 uschar *character;
101 int length;
102 };
103
104struct Notification
105 {
106 struct String method;
107 struct String importance;
108 struct String message;
109 struct Notification *next;
110 };
111
112/* This should be a complete list of supported extensions, so that an external
113ManageSieve (RFC 5804) program can interrogate the current Exim binary for the
114list of extensions and provide correct information to a client.
115
116We'll emit the list in the order given here; keep it alphabetically sorted, so
117that callers don't get surprised.
118
119List *MUST* end with a NULL. Which at least makes ifdef-vs-comma easier. */
120
121const uschar *exim_sieve_extension_list[] = {
122 CUS"comparator-i;ascii-numeric",
123 CUS"copy",
124#ifdef ENCODED_CHARACTER
125 CUS"encoded-character",
126#endif
127#ifdef ENOTIFY
128 CUS"enotify",
129#endif
130 CUS"envelope",
131#ifdef ENVELOPE_AUTH
132 CUS"envelope-auth",
133#endif
134 CUS"fileinto",
135#ifdef SUBADDRESS
136 CUS"subaddress",
137#endif
138#ifdef VACATION
139 CUS"vacation",
140#endif
141 NULL
142};
143
144static int eq_asciicase(const struct String *needle, const struct String *haystack, int match_prefix);
145static int parse_test(struct Sieve *filter, int *cond, int exec);
146static int parse_commands(struct Sieve *filter, int exec, address_item **generated);
147
148static uschar str_from_c[]="From";
149static const struct String str_from={ str_from_c, 4 };
150static uschar str_to_c[]="To";
151static const struct String str_to={ str_to_c, 2 };
152static uschar str_cc_c[]="Cc";
153static const struct String str_cc={ str_cc_c, 2 };
154static uschar str_bcc_c[]="Bcc";
155static const struct String str_bcc={ str_bcc_c, 3 };
156static uschar str_auth_c[]="auth";
157static const struct String str_auth={ str_auth_c, 4 };
158static uschar str_sender_c[]="Sender";
159static const struct String str_sender={ str_sender_c, 6 };
160static uschar str_resent_from_c[]="Resent-From";
161static const struct String str_resent_from={ str_resent_from_c, 11 };
162static uschar str_resent_to_c[]="Resent-To";
163static const struct String str_resent_to={ str_resent_to_c, 9 };
164static uschar str_fileinto_c[]="fileinto";
165static const struct String str_fileinto={ str_fileinto_c, 8 };
166static uschar str_envelope_c[]="envelope";
167static const struct String str_envelope={ str_envelope_c, 8 };
168#ifdef ENCODED_CHARACTER
169static uschar str_encoded_character_c[]="encoded-character";
170static const struct String str_encoded_character={ str_encoded_character_c, 17 };
171#endif
172#ifdef ENVELOPE_AUTH
173static uschar str_envelope_auth_c[]="envelope-auth";
174static const struct String str_envelope_auth={ str_envelope_auth_c, 13 };
175#endif
176#ifdef ENOTIFY
177static uschar str_enotify_c[]="enotify";
178static const struct String str_enotify={ str_enotify_c, 7 };
179static uschar str_online_c[]="online";
180static const struct String str_online={ str_online_c, 6 };
181static uschar str_maybe_c[]="maybe";
182static const struct String str_maybe={ str_maybe_c, 5 };
183static uschar str_auto_submitted_c[]="Auto-Submitted";
184static const struct String str_auto_submitted={ str_auto_submitted_c, 14 };
185#endif
186#ifdef SUBADDRESS
187static uschar str_subaddress_c[]="subaddress";
188static const struct String str_subaddress={ str_subaddress_c, 10 };
189#endif
190#ifdef VACATION
191static uschar str_vacation_c[]="vacation";
192static const struct String str_vacation={ str_vacation_c, 8 };
193static uschar str_subject_c[]="Subject";
194static const struct String str_subject={ str_subject_c, 7 };
195#endif
196static uschar str_copy_c[]="copy";
197static const struct String str_copy={ str_copy_c, 4 };
198static uschar str_iascii_casemap_c[]="i;ascii-casemap";
199static const struct String str_iascii_casemap={ str_iascii_casemap_c, 15 };
200static uschar str_enascii_casemap_c[]="en;ascii-casemap";
201static const struct String str_enascii_casemap={ str_enascii_casemap_c, 16 };
202static uschar str_ioctet_c[]="i;octet";
203static const struct String str_ioctet={ str_ioctet_c, 7 };
204static uschar str_iascii_numeric_c[]="i;ascii-numeric";
205static const struct String str_iascii_numeric={ str_iascii_numeric_c, 15 };
206static uschar str_comparator_iascii_casemap_c[]="comparator-i;ascii-casemap";
207static const struct String str_comparator_iascii_casemap={ str_comparator_iascii_casemap_c, 26 };
208static uschar str_comparator_enascii_casemap_c[]="comparator-en;ascii-casemap";
209static const struct String str_comparator_enascii_casemap={ str_comparator_enascii_casemap_c, 27 };
210static uschar str_comparator_ioctet_c[]="comparator-i;octet";
211static const struct String str_comparator_ioctet={ str_comparator_ioctet_c, 18 };
212static uschar str_comparator_iascii_numeric_c[]="comparator-i;ascii-numeric";
213static const struct String str_comparator_iascii_numeric={ str_comparator_iascii_numeric_c, 26 };
214
215
216/*************************************************
217* Encode to quoted-printable *
218*************************************************/
219
220/*
221Arguments:
222 src UTF-8 string
223 dst US-ASCII string
224
225Returns
226 dst
227*/
228
229static struct String *quoted_printable_encode(const struct String *src, struct String *dst)
230{
231int pass;
232const uschar *start,*end;
233uschar *new = NULL;
234uschar ch;
235size_t line;
236
237/* Two passes: one to count output allocation size, second
238to do the encoding */
239
240for (pass=0; pass<=1; ++pass)
241 {
242 line=0;
243 if (pass==0)
244 dst->length=0;
245 else
246 {
247 dst->character=store_get(dst->length+1); /* plus one for \0 */
248 new=dst->character;
249 }
250 for (start=src->character,end=start+src->length; start<end; ++start)
251 {
252 ch=*start;
253 if (line>=73) /* line length limit */
254 {
255 if (pass==0)
256 dst->length+=2;
257 else
258 {
259 *new++='='; /* line split */
260 *new++='\n';
261 }
262 line=0;
263 }
264 if ( (ch>='!' && ch<='<')
265 || (ch>='>' && ch<='~')
266 || ( (ch=='\t' || ch==' ')
267 && start+2<end
268 && (*(start+1)!='\r' || *(start+2)!='\n') /* CRLF */
269 )
270 )
271 {
272 if (pass==0)
273 ++dst->length;
274 else
275 *new++=*start; /* copy char */
276 ++line;
277 }
278 else if (ch=='\r' && start+1<end && *(start+1)=='\n') /* CRLF */
279 {
280 if (pass==0)
281 ++dst->length;
282 else
283 *new++='\n'; /* NL */
284 line=0;
285 ++start; /* consume extra input char */
286 }
287 else
288 {
289 if (pass==0)
290 dst->length+=3;
291 else
292 { /* encoded char */
293 new += sprintf(CS new,"=%02X",ch);
294 }
295 line+=3;
296 }
297 }
298 }
299 *new='\0'; /* not included in length, but nice */
300 return dst;
301}
302
303
304/*************************************************
305* Check mail address for correct syntax *
306*************************************************/
307
308/*
309Check mail address for being syntactically correct.
310
311Arguments:
312 filter points to the Sieve filter including its state
313 address String containing one address
314
315Returns
316 1 Mail address is syntactically OK
317 -1 syntax error
318*/
319
320int check_mail_address(struct Sieve *filter, const struct String *address)
321{
322int start, end, domain;
323uschar *error,*ss;
324
325if (address->length>0)
326 {
327 ss = parse_extract_address(address->character, &error, &start, &end, &domain,
328 FALSE);
329 if (ss == NULL)
330 {
331 filter->errmsg=string_sprintf("malformed address \"%s\" (%s)",
332 address->character, error);
333 return -1;
334 }
335 else
336 return 1;
337 }
338else
339 {
340 filter->errmsg=CUS "empty address";
341 return -1;
342 }
343}
344
345
346/*************************************************
347* Decode URI encoded string *
348*************************************************/
349
350/*
351Arguments:
352 str URI encoded string
353
354Returns
355 0 Decoding successful
356 -1 Encoding error
357*/
358
359#ifdef ENOTIFY
360static int uri_decode(struct String *str)
361{
362uschar *s,*t,*e;
363
364if (str->length==0) return 0;
365for (s=str->character,t=s,e=s+str->length; s<e; )
366 {
367 if (*s=='%')
368 {
369 if (s+2<e && isxdigit(*(s+1)) && isxdigit(*(s+2)))
370 {
371 *t++=((isdigit(*(s+1)) ? *(s+1)-'0' : tolower(*(s+1))-'a'+10)<<4)
372 | (isdigit(*(s+2)) ? *(s+2)-'0' : tolower(*(s+2))-'a'+10);
373 s+=3;
374 }
375 else return -1;
376 }
377 else
378 *t++=*s++;
379 }
380*t='\0';
381str->length=t-str->character;
382return 0;
383}
384
385
386/*************************************************
387* Parse mailto URI *
388*************************************************/
389
390/*
391Parse mailto-URI.
392
393 mailtoURI = "mailto:" [ to ] [ headers ]
394 to = [ addr-spec *("%2C" addr-spec ) ]
395 headers = "?" header *( "&" header )
396 header = hname "=" hvalue
397 hname = *urlc
398 hvalue = *urlc
399
400Arguments:
401 filter points to the Sieve filter including its state
402 uri URI, excluding scheme
403 recipient
404 body
405
406Returns
407 1 URI is syntactically OK
408 0 Unknown URI scheme
409 -1 syntax error
410*/
411
412static int
413parse_mailto_uri(struct Sieve *filter, const uschar *uri,
414 string_item **recipient, struct String *header, struct String *subject,
415 struct String *body)
416{
417const uschar *start;
418struct String to, hname;
419struct String hvalue = {.character = NULL, .length = 0};
420string_item *new;
421
422if (Ustrncmp(uri,"mailto:",7))
423 {
424 filter->errmsg=US "Unknown URI scheme";
425 return 0;
426 }
427
428uri+=7;
429if (*uri && *uri!='?')
430 for (;;)
431 {
432 /* match to */
433 for (start=uri; *uri && *uri!='?' && (*uri!='%' || *(uri+1)!='2' || tolower(*(uri+2))!='c'); ++uri);
434 if (uri>start)
435 {
436 gstring * g = string_catn(NULL, start, uri-start);
437
438 to.character = string_from_gstring(g);
439 to.length = g->ptr;
440 if (uri_decode(&to)==-1)
441 {
442 filter->errmsg=US"Invalid URI encoding";
443 return -1;
444 }
445 new=store_get(sizeof(string_item));
446 new->text=store_get(to.length+1);
447 if (to.length) memcpy(new->text,to.character,to.length);
448 new->text[to.length]='\0';
449 new->next=*recipient;
450 *recipient=new;
451 }
452 else
453 {
454 filter->errmsg=US"Missing addr-spec in URI";
455 return -1;
456 }
457 if (*uri=='%') uri+=3;
458 else break;
459 }
460if (*uri=='?')
461 {
462 ++uri;
463 for (;;)
464 {
465 /* match hname */
466 for (start=uri; *uri && (isalnum(*uri) || strchr("$-_.+!*'(),%",*uri)); ++uri);
467 if (uri>start)
468 {
469 gstring * g = string_catn(NULL, start, uri-start);
470
471 hname.character = string_from_gstring(g);
472 hname.length = g->ptr;
473 if (uri_decode(&hname)==-1)
474 {
475 filter->errmsg=US"Invalid URI encoding";
476 return -1;
477 }
478 }
479 /* match = */
480 if (*uri=='=')
481 ++uri;
482 else
483 {
484 filter->errmsg=US"Missing equal after hname";
485 return -1;
486 }
487 /* match hvalue */
488 for (start=uri; *uri && (isalnum(*uri) || strchr("$-_.+!*'(),%",*uri)); ++uri);
489 if (uri>start)
490 {
491 gstring * g = string_catn(NULL, start, uri-start);
492
493 hname.character = string_from_gstring(g);
494 hname.length = g->ptr;
495 if (uri_decode(&hvalue)==-1)
496 {
497 filter->errmsg=US"Invalid URI encoding";
498 return -1;
499 }
500 }
501 if (hname.length==2 && strcmpic(hname.character, US"to")==0)
502 {
503 new=store_get(sizeof(string_item));
504 new->text=store_get(hvalue.length+1);
505 if (hvalue.length) memcpy(new->text,hvalue.character,hvalue.length);
506 new->text[hvalue.length]='\0';
507 new->next=*recipient;
508 *recipient=new;
509 }
510 else if (hname.length==4 && strcmpic(hname.character, US"body")==0)
511 *body=hvalue;
512 else if (hname.length==7 && strcmpic(hname.character, US"subject")==0)
513 *subject=hvalue;
514 else
515 {
516 static struct String ignore[]=
517 {
518 {US"date",4},
519 {US"from",4},
520 {US"message-id",10},
521 {US"received",8},
522 {US"auto-submitted",14}
523 };
524 static struct String *end=ignore+sizeof(ignore)/sizeof(ignore[0]);
525 struct String *i;
526
527 for (i=ignore; i<end && !eq_asciicase(&hname,i,0); ++i);
528 if (i==end)
529 {
530 gstring * g;
531
532 if (header->length==-1) header->length = 0;
533
534 g = string_catn(NULL, header->character, header->length);
535 g = string_catn(g, hname.character, hname.length);
536 g = string_catn(g, CUS ": ", 2);
537 g = string_catn(g, hvalue.character, hvalue.length);
538 g = string_catn(g, CUS "\n", 1);
539
540 header->character = string_from_gstring(g);
541 header->length = g->ptr;
542 }
543 }
544 if (*uri=='&') ++uri;
545 else break;
546 }
547 }
548if (*uri)
549 {
550 filter->errmsg=US"Syntactically invalid URI";
551 return -1;
552 }
553return 1;
554}
555#endif
556
557
558/*************************************************
559* Octet-wise string comparison *
560*************************************************/
561
562/*
563Arguments:
564 needle UTF-8 string to search ...
565 haystack ... inside the haystack
566 match_prefix 1 to compare if needle is a prefix of haystack
567
568Returns: 0 needle not found in haystack
569 1 needle found
570*/
571
572static int eq_octet(const struct String *needle,
573 const struct String *haystack, int match_prefix)
574{
575size_t nl,hl;
576const uschar *n,*h;
577
578nl=needle->length;
579n=needle->character;
580hl=haystack->length;
581h=haystack->character;
582while (nl>0 && hl>0)
583 {
584#if !HAVE_ICONV
585 if (*n&0x80) return 0;
586 if (*h&0x80) return 0;
587#endif
588 if (*n!=*h) return 0;
589 ++n;
590 ++h;
591 --nl;
592 --hl;
593 }
594return (match_prefix ? nl==0 : nl==0 && hl==0);
595}
596
597
598/*************************************************
599* ASCII case-insensitive string comparison *
600*************************************************/
601
602/*
603Arguments:
604 needle UTF-8 string to search ...
605 haystack ... inside the haystack
606 match_prefix 1 to compare if needle is a prefix of haystack
607
608Returns: 0 needle not found in haystack
609 1 needle found
610*/
611
612static int eq_asciicase(const struct String *needle,
613 const struct String *haystack, int match_prefix)
614{
615size_t nl,hl;
616const uschar *n,*h;
617uschar nc,hc;
618
619nl=needle->length;
620n=needle->character;
621hl=haystack->length;
622h=haystack->character;
623while (nl>0 && hl>0)
624 {
625 nc=*n;
626 hc=*h;
627#if !HAVE_ICONV
628 if (nc&0x80) return 0;
629 if (hc&0x80) return 0;
630#endif
631 /* tolower depends on the locale and only ASCII case must be insensitive */
632 if ((nc>='A' && nc<='Z' ? nc|0x20 : nc) != (hc>='A' && hc<='Z' ? hc|0x20 : hc)) return 0;
633 ++n;
634 ++h;
635 --nl;
636 --hl;
637 }
638return (match_prefix ? nl==0 : nl==0 && hl==0);
639}
640
641
642/*************************************************
643* Glob pattern search *
644*************************************************/
645
646/*
647Arguments:
648 needle pattern to search ...
649 haystack ... inside the haystack
650 ascii_caseless ignore ASCII case
651 match_octet match octets, not UTF-8 multi-octet characters
652
653Returns: 0 needle not found in haystack
654 1 needle found
655 -1 pattern error
656*/
657
658static int eq_glob(const struct String *needle,
659 const struct String *haystack, int ascii_caseless, int match_octet)
660{
661const uschar *n,*h,*nend,*hend;
662int may_advance=0;
663
664n=needle->character;
665h=haystack->character;
666nend=n+needle->length;
667hend=h+haystack->length;
668while (n<nend)
669 {
670 if (*n=='*')
671 {
672 ++n;
673 may_advance=1;
674 }
675 else
676 {
677 const uschar *npart,*hpart;
678
679 /* Try to match a non-star part of the needle at the current */
680 /* position in the haystack. */
681 match_part:
682 npart=n;
683 hpart=h;
684 while (npart<nend && *npart!='*') switch (*npart)
685 {
686 case '?':
687 {
688 if (hpart==hend) return 0;
689 if (match_octet)
690 ++hpart;
691 else
692 {
693 /* Match one UTF8 encoded character */
694 if ((*hpart&0xc0)==0xc0)
695 {
696 ++hpart;
697 while (hpart<hend && ((*hpart&0xc0)==0x80)) ++hpart;
698 }
699 else
700 ++hpart;
701 }
702 ++npart;
703 break;
704 }
705 case '\\':
706 {
707 ++npart;
708 if (npart==nend) return -1;
709 /* FALLTHROUGH */
710 }
711 default:
712 {
713 if (hpart==hend) return 0;
714 /* tolower depends on the locale, but we need ASCII */
715 if
716 (
717#if !HAVE_ICONV
718 (*hpart&0x80) || (*npart&0x80) ||
719#endif
720 ascii_caseless
721 ? ((*npart>='A' && *npart<='Z' ? *npart|0x20 : *npart) != (*hpart>='A' && *hpart<='Z' ? *hpart|0x20 : *hpart))
722 : *hpart!=*npart
723 )
724 {
725 if (may_advance)
726 /* string match after a star failed, advance and try again */
727 {
728 ++h;
729 goto match_part;
730 }
731 else return 0;
732 }
733 else
734 {
735 ++npart;
736 ++hpart;
737 };
738 }
739 }
740 /* at this point, a part was matched successfully */
741 if (may_advance && npart==nend && hpart<hend)
742 /* needle ends, but haystack does not: if there was a star before, advance and try again */
743 {
744 ++h;
745 goto match_part;
746 }
747 h=hpart;
748 n=npart;
749 may_advance=0;
750 }
751 }
752return (h==hend ? 1 : may_advance);
753}
754
755
756/*************************************************
757* ASCII numeric comparison *
758*************************************************/
759
760/*
761Arguments:
762 a first numeric string
763 b second numeric string
764 relop relational operator
765
766Returns: 0 not (a relop b)
767 1 a relop b
768*/
769
770static int eq_asciinumeric(const struct String *a,
771 const struct String *b, enum RelOp relop)
772{
773size_t al,bl;
774const uschar *as,*aend,*bs,*bend;
775int cmp;
776
777as=a->character;
778aend=a->character+a->length;
779bs=b->character;
780bend=b->character+b->length;
781
782while (*as>='0' && *as<='9' && as<aend) ++as;
783al=as-a->character;
784while (*bs>='0' && *bs<='9' && bs<bend) ++bs;
785bl=bs-b->character;
786
787if (al && bl==0) cmp=-1;
788else if (al==0 && bl==0) cmp=0;
789else if (al==0 && bl) cmp=1;
790else
791 {
792 cmp=al-bl;
793 if (cmp==0) cmp=memcmp(a->character,b->character,al);
794 }
795switch (relop)
796 {
797 case LT: return cmp<0;
798 case LE: return cmp<=0;
799 case EQ: return cmp==0;
800 case GE: return cmp>=0;
801 case GT: return cmp>0;
802 case NE: return cmp!=0;
803 }
804 /*NOTREACHED*/
805 return -1;
806}
807
808
809/*************************************************
810* Compare strings *
811*************************************************/
812
813/*
814Arguments:
815 filter points to the Sieve filter including its state
816 needle UTF-8 pattern or string to search ...
817 haystack ... inside the haystack
818 co comparator to use
819 mt match type to use
820
821Returns: 0 needle not found in haystack
822 1 needle found
823 -1 comparator does not offer matchtype
824*/
825
826static int compare(struct Sieve *filter, const struct String *needle, const struct String *haystack,
827 enum Comparator co, enum MatchType mt)
828{
829int r=0;
830
831if ((filter_test != FTEST_NONE && debug_selector != 0) ||
832 (debug_selector & D_filter) != 0)
833 {
834 debug_printf("String comparison (match ");
835 switch (mt)
836 {
837 case MATCH_IS: debug_printf(":is"); break;
838 case MATCH_CONTAINS: debug_printf(":contains"); break;
839 case MATCH_MATCHES: debug_printf(":matches"); break;
840 }
841 debug_printf(", comparison \"");
842 switch (co)
843 {
844 case COMP_OCTET: debug_printf("i;octet"); break;
845 case COMP_EN_ASCII_CASEMAP: debug_printf("en;ascii-casemap"); break;
846 case COMP_ASCII_NUMERIC: debug_printf("i;ascii-numeric"); break;
847 }
848 debug_printf("\"):\n");
849 debug_printf(" Search = %s (%d chars)\n", needle->character,needle->length);
850 debug_printf(" Inside = %s (%d chars)\n", haystack->character,haystack->length);
851 }
852switch (mt)
853 {
854 case MATCH_IS:
855 {
856 switch (co)
857 {
858 case COMP_OCTET:
859 {
860 if (eq_octet(needle,haystack,0)) r=1;
861 break;
862 }
863 case COMP_EN_ASCII_CASEMAP:
864 {
865 if (eq_asciicase(needle,haystack,0)) r=1;
866 break;
867 }
868 case COMP_ASCII_NUMERIC:
869 {
870 if (!filter->require_iascii_numeric)
871 {
872 filter->errmsg=CUS "missing previous require \"comparator-i;ascii-numeric\";";
873 return -1;
874 }
875 if (eq_asciinumeric(needle,haystack,EQ)) r=1;
876 break;
877 }
878 }
879 break;
880 }
881 case MATCH_CONTAINS:
882 {
883 struct String h;
884
885 switch (co)
886 {
887 case COMP_OCTET:
888 {
889 for (h=*haystack; h.length; ++h.character,--h.length) if (eq_octet(needle,&h,1)) { r=1; break; }
890 break;
891 }
892 case COMP_EN_ASCII_CASEMAP:
893 {
894 for (h=*haystack; h.length; ++h.character,--h.length) if (eq_asciicase(needle,&h,1)) { r=1; break; }
895 break;
896 }
897 default:
898 {
899 filter->errmsg=CUS "comparator does not offer specified matchtype";
900 return -1;
901 }
902 }
903 break;
904 }
905 case MATCH_MATCHES:
906 {
907 switch (co)
908 {
909 case COMP_OCTET:
910 {
911 if ((r=eq_glob(needle,haystack,0,1))==-1)
912 {
913 filter->errmsg=CUS "syntactically invalid pattern";
914 return -1;
915 }
916 break;
917 }
918 case COMP_EN_ASCII_CASEMAP:
919 {
920 if ((r=eq_glob(needle,haystack,1,1))==-1)
921 {
922 filter->errmsg=CUS "syntactically invalid pattern";
923 return -1;
924 }
925 break;
926 }
927 default:
928 {
929 filter->errmsg=CUS "comparator does not offer specified matchtype";
930 return -1;
931 }
932 }
933 break;
934 }
935 }
936if ((filter_test != FTEST_NONE && debug_selector != 0) ||
937 (debug_selector & D_filter) != 0)
938 debug_printf(" Result %s\n",r?"true":"false");
939return r;
940}
941
942
943/*************************************************
944* Check header field syntax *
945*************************************************/
946
947/*
948RFC 2822, section 3.6.8 says:
949
950 field-name = 1*ftext
951
952 ftext = %d33-57 / ; Any character except
953 %d59-126 ; controls, SP, and
954 ; ":".
955
956That forbids 8-bit header fields. This implementation accepts them, since
957all of Exim is 8-bit clean, so it adds %d128-%d255.
958
959Arguments:
960 header header field to quote for suitable use in Exim expansions
961
962Returns: 0 string is not a valid header field
963 1 string is a value header field
964*/
965
966static int is_header(const struct String *header)
967{
968size_t l;
969const uschar *h;
970
971l=header->length;
972h=header->character;
973if (l==0) return 0;
974while (l)
975 {
976 if (((unsigned char)*h)<33 || ((unsigned char)*h)==':' || ((unsigned char)*h)==127) return 0;
977 else
978 {
979 ++h;
980 --l;
981 }
982 }
983return 1;
984}
985
986
987/*************************************************
988* Quote special characters string *
989*************************************************/
990
991/*
992Arguments:
993 header header field to quote for suitable use in Exim expansions
994 or as debug output
995
996Returns: quoted string
997*/
998
999static const uschar *
1000quote(const struct String *header)
1001{
1002gstring * quoted = NULL;
1003size_t l;
1004const uschar *h;
1005
1006l=header->length;
1007h=header->character;
1008while (l)
1009 {
1010 switch (*h)
1011 {
1012 case '\0':
1013 quoted = string_catn(quoted, CUS "\\0", 2);
1014 break;
1015 case '$':
1016 case '{':
1017 case '}':
1018 quoted = string_catn(quoted, CUS "\\", 1);
1019 default:
1020 quoted = string_catn(quoted, h, 1);
1021 }
1022 ++h;
1023 --l;
1024 }
1025quoted = string_catn(quoted, CUS "", 1);
1026return string_from_gstring(quoted);
1027}
1028
1029
1030/*************************************************
1031* Add address to list of generated addresses *
1032*************************************************/
1033
1034/*
1035According to RFC 5228, duplicate delivery to the same address must
1036not happen, so the list is first searched for the address.
1037
1038Arguments:
1039 generated list of generated addresses
1040 addr new address to add
1041 file address denotes a file
1042
1043Returns: nothing
1044*/
1045
1046static void
1047add_addr(address_item **generated, uschar *addr, int file, int maxage, int maxmessages, int maxstorage)
1048{
1049address_item *new_addr;
1050
1051for (new_addr=*generated; new_addr; new_addr=new_addr->next)
1052 if ( Ustrcmp(new_addr->address,addr) == 0
1053 && ( !file
1054 || testflag(new_addr, af_pfr)
1055 || testflag(new_addr, af_file)
1056 )
1057 )
1058 {
1059 if ((filter_test != FTEST_NONE && debug_selector != 0) || (debug_selector & D_filter) != 0)
1060 debug_printf("Repeated %s `%s' ignored.\n",file ? "fileinto" : "redirect", addr);
1061
1062 return;
1063 }
1064
1065if ((filter_test != FTEST_NONE && debug_selector != 0) || (debug_selector & D_filter) != 0)
1066 debug_printf("%s `%s'\n",file ? "fileinto" : "redirect", addr);
1067
1068new_addr = deliver_make_addr(addr,TRUE);
1069if (file)
1070 {
1071 setflag(new_addr, af_pfr);
1072 setflag(new_addr, af_file);
1073 new_addr->mode = 0;
1074 }
1075new_addr->prop.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
1476parse_string(struct Sieve *filter, struct String *data)
1477{
1478gstring * g = NULL;
1479
1480data->length = 0;
1481data->character = NULL;
1482
1483if (*filter->pc=='"') /* quoted string */
1484 {
1485 ++filter->pc;
1486 while (*filter->pc)
1487 {
1488 if (*filter->pc=='"') /* end of string */
1489 {
1490 ++filter->pc;
1491
1492 if (g)
1493 {
1494 data->character = string_from_gstring(g);
1495 data->length = g->ptr;
1496 }
1497 else
1498 data->character = US"\0";
1499 /* that way, there will be at least one character allocated */
1500
1501#ifdef ENCODED_CHARACTER
1502 if (filter->require_encoded_character
1503 && string_decode(filter,data)==-1)
1504 return -1;
1505#endif
1506 return 1;
1507 }
1508 else if (*filter->pc=='\\' && *(filter->pc+1)) /* quoted character */
1509 {
1510 g = string_catn(g, filter->pc+1, 1);
1511 filter->pc+=2;
1512 }
1513 else /* regular character */
1514 {
1515#ifdef RFC_EOL
1516 if (*filter->pc=='\r' && *(filter->pc+1)=='\n') ++filter->line;
1517#else
1518 if (*filter->pc=='\n')
1519 {
1520 g = string_catn(g, US"\r", 1);
1521 ++filter->line;
1522 }
1523#endif
1524 g = string_catn(g, filter->pc, 1);
1525 filter->pc++;
1526 }
1527 }
1528 filter->errmsg=CUS "missing end of string";
1529 return -1;
1530 }
1531else if (Ustrncmp(filter->pc,CUS "text:",5)==0) /* multiline string */
1532 {
1533 filter->pc+=5;
1534 /* skip optional white space followed by hashed comment or CRLF */
1535 while (*filter->pc==' ' || *filter->pc=='\t') ++filter->pc;
1536 if (*filter->pc=='#')
1537 {
1538 if (parse_hashcomment(filter)==-1) return -1;
1539 }
1540#ifdef RFC_EOL
1541 else if (*filter->pc=='\r' && *(filter->pc+1)=='\n')
1542#else
1543 else if (*filter->pc=='\n')
1544#endif
1545 {
1546#ifdef RFC_EOL
1547 filter->pc+=2;
1548#else
1549 ++filter->pc;
1550#endif
1551 ++filter->line;
1552 }
1553 else
1554 {
1555 filter->errmsg=CUS "syntax error";
1556 return -1;
1557 }
1558 while (*filter->pc)
1559 {
1560#ifdef RFC_EOL
1561 if (*filter->pc=='\r' && *(filter->pc+1)=='\n') /* end of line */
1562#else
1563 if (*filter->pc=='\n') /* end of line */
1564#endif
1565 {
1566 g = string_catn(g, CUS "\r\n", 2);
1567#ifdef RFC_EOL
1568 filter->pc+=2;
1569#else
1570 ++filter->pc;
1571#endif
1572 ++filter->line;
1573#ifdef RFC_EOL
1574 if (*filter->pc=='.' && *(filter->pc+1)=='\r' && *(filter->pc+2)=='\n') /* end of string */
1575#else
1576 if (*filter->pc=='.' && *(filter->pc+1)=='\n') /* end of string */
1577#endif
1578 {
1579 if (g)
1580 {
1581 data->character = string_from_gstring(g);
1582 data->length = g->ptr;
1583 }
1584 else
1585 data->character = US"\0";
1586 /* that way, there will be at least one character allocated */
1587
1588#ifdef RFC_EOL
1589 filter->pc+=3;
1590#else
1591 filter->pc+=2;
1592#endif
1593 ++filter->line;
1594#ifdef ENCODED_CHARACTER
1595 if (filter->require_encoded_character
1596 && string_decode(filter,data)==-1)
1597 return -1;
1598#endif
1599 return 1;
1600 }
1601 else if (*filter->pc=='.' && *(filter->pc+1)=='.') /* remove dot stuffing */
1602 {
1603 g = string_catn(g, CUS ".", 1);
1604 filter->pc+=2;
1605 }
1606 }
1607 else /* regular character */
1608 {
1609 g = string_catn(g, filter->pc, 1);
1610 filter->pc++;
1611 }
1612 }
1613 filter->errmsg=CUS "missing end of multi line string";
1614 return -1;
1615 }
1616else return 0;
1617}
1618
1619
1620/*************************************************
1621* Parse a specific identifier *
1622*************************************************/
1623
1624/*
1625Token definition:
1626 identifier = (ALPHA / "_") *(ALPHA DIGIT "_")
1627
1628Arguments:
1629 filter points to the Sieve filter including its state
1630 id specifies identifier to match
1631
1632Returns: 1 success
1633 0 identifier not matched
1634*/
1635
1636static int parse_identifier(struct Sieve *filter, const uschar *id)
1637{
1638 size_t idlen=Ustrlen(id);
1639
1640 if (strncmpic(US filter->pc,US id,idlen)==0)
1641 {
1642 uschar next=filter->pc[idlen];
1643
1644 if ((next>='A' && next<='Z') || (next>='a' && next<='z') || next=='_' || (next>='0' && next<='9')) return 0;
1645 filter->pc+=idlen;
1646 return 1;
1647 }
1648 else return 0;
1649}
1650
1651
1652/*************************************************
1653* Parse a number *
1654*************************************************/
1655
1656/*
1657Token definition:
1658 number = 1*DIGIT [QUANTIFIER]
1659 QUANTIFIER = "K" / "M" / "G"
1660
1661Arguments:
1662 filter points to the Sieve filter including its state
1663 data returns value
1664
1665Returns: 1 success
1666 -1 no string list found
1667*/
1668
1669static int parse_number(struct Sieve *filter, unsigned long *data)
1670{
1671unsigned long d,u;
1672
1673if (*filter->pc>='0' && *filter->pc<='9')
1674 {
1675 uschar *e;
1676
1677 errno=0;
1678 d=Ustrtoul(filter->pc,&e,10);
1679 if (errno==ERANGE)
1680 {
1681 filter->errmsg=CUstrerror(ERANGE);
1682 return -1;
1683 }
1684 filter->pc=e;
1685 u=1;
1686 if (*filter->pc=='K') { u=1024; ++filter->pc; }
1687 else if (*filter->pc=='M') { u=1024*1024; ++filter->pc; }
1688 else if (*filter->pc=='G') { u=1024*1024*1024; ++filter->pc; }
1689 if (d>(ULONG_MAX/u))
1690 {
1691 filter->errmsg=CUstrerror(ERANGE);
1692 return -1;
1693 }
1694 d*=u;
1695 *data=d;
1696 return 1;
1697 }
1698else
1699 {
1700 filter->errmsg=CUS "missing number";
1701 return -1;
1702 }
1703}
1704
1705
1706/*************************************************
1707* Parse a string list *
1708*************************************************/
1709
1710/*
1711Grammar:
1712 string-list = "[" string *("," string) "]" / string
1713
1714Arguments:
1715 filter points to the Sieve filter including its state
1716 data returns string list
1717
1718Returns: 1 success
1719 -1 no string list found
1720*/
1721
1722static int
1723parse_stringlist(struct Sieve *filter, struct String **data)
1724{
1725const uschar *orig=filter->pc;
1726int dataCapacity = 0;
1727int dataLength = 0;
1728struct String *d = NULL;
1729int m;
1730
1731if (*filter->pc=='[') /* string list */
1732 {
1733 ++filter->pc;
1734 for (;;)
1735 {
1736 if (parse_white(filter)==-1) goto error;
1737 if (dataLength+1 >= dataCapacity) /* increase buffer */
1738 {
1739 struct String *new;
1740
1741 dataCapacity = dataCapacity ? dataCapacity * 2 : 4;
1742 new = store_get(sizeof(struct String) * dataCapacity);
1743
1744 if (d) memcpy(new,d,sizeof(struct String)*dataLength);
1745 d = new;
1746 }
1747
1748 m=parse_string(filter,&d[dataLength]);
1749 if (m==0)
1750 {
1751 if (dataLength==0) break;
1752 else
1753 {
1754 filter->errmsg=CUS "missing string";
1755 goto error;
1756 }
1757 }
1758 else if (m==-1) goto error;
1759 else ++dataLength;
1760 if (parse_white(filter)==-1) goto error;
1761 if (*filter->pc==',') ++filter->pc;
1762 else break;
1763 }
1764 if (*filter->pc==']')
1765 {
1766 d[dataLength].character=(uschar*)0;
1767 d[dataLength].length=-1;
1768 ++filter->pc;
1769 *data=d;
1770 return 1;
1771 }
1772 else
1773 {
1774 filter->errmsg=CUS "missing closing bracket";
1775 goto error;
1776 }
1777 }
1778else /* single string */
1779 {
1780 if ((d=store_get(sizeof(struct String)*2))==(struct String*)0)
1781 {
1782 return -1;
1783 }
1784 m=parse_string(filter,&d[0]);
1785 if (m==-1)
1786 {
1787 return -1;
1788 }
1789 else if (m==0)
1790 {
1791 filter->pc=orig;
1792 return 0;
1793 }
1794 else
1795 {
1796 d[1].character=(uschar*)0;
1797 d[1].length=-1;
1798 *data=d;
1799 return 1;
1800 }
1801 }
1802error:
1803filter->errmsg=CUS "missing string list";
1804return -1;
1805}
1806
1807
1808/*************************************************
1809* Parse an optional address part specifier *
1810*************************************************/
1811
1812/*
1813Grammar:
1814 address-part = ":localpart" / ":domain" / ":all"
1815 address-part =/ ":user" / ":detail"
1816
1817Arguments:
1818 filter points to the Sieve filter including its state
1819 a returns address part specified
1820
1821Returns: 1 success
1822 0 no comparator found
1823 -1 syntax error
1824*/
1825
1826static int parse_addresspart(struct Sieve *filter, enum AddressPart *a)
1827{
1828#ifdef SUBADDRESS
1829if (parse_identifier(filter,CUS ":user")==1)
1830 {
1831 if (!filter->require_subaddress)
1832 {
1833 filter->errmsg=CUS "missing previous require \"subaddress\";";
1834 return -1;
1835 }
1836 *a=ADDRPART_USER;
1837 return 1;
1838 }
1839else if (parse_identifier(filter,CUS ":detail")==1)
1840 {
1841 if (!filter->require_subaddress)
1842 {
1843 filter->errmsg=CUS "missing previous require \"subaddress\";";
1844 return -1;
1845 }
1846 *a=ADDRPART_DETAIL;
1847 return 1;
1848 }
1849else
1850#endif
1851if (parse_identifier(filter,CUS ":localpart")==1)
1852 {
1853 *a=ADDRPART_LOCALPART;
1854 return 1;
1855 }
1856else if (parse_identifier(filter,CUS ":domain")==1)
1857 {
1858 *a=ADDRPART_DOMAIN;
1859 return 1;
1860 }
1861else if (parse_identifier(filter,CUS ":all")==1)
1862 {
1863 *a=ADDRPART_ALL;
1864 return 1;
1865 }
1866else return 0;
1867}
1868
1869
1870/*************************************************
1871* Parse an optional comparator *
1872*************************************************/
1873
1874/*
1875Grammar:
1876 comparator = ":comparator" <comparator-name: string>
1877
1878Arguments:
1879 filter points to the Sieve filter including its state
1880 c returns comparator
1881
1882Returns: 1 success
1883 0 no comparator found
1884 -1 incomplete comparator found
1885*/
1886
1887static int parse_comparator(struct Sieve *filter, enum Comparator *c)
1888{
1889struct String comparator_name;
1890
1891if (parse_identifier(filter,CUS ":comparator")==0) return 0;
1892if (parse_white(filter)==-1) return -1;
1893switch (parse_string(filter,&comparator_name))
1894 {
1895 case -1: return -1;
1896 case 0:
1897 {
1898 filter->errmsg=CUS "missing comparator";
1899 return -1;
1900 }
1901 default:
1902 {
1903 int match;
1904
1905 if (eq_asciicase(&comparator_name,&str_ioctet,0))
1906 {
1907 *c=COMP_OCTET;
1908 match=1;
1909 }
1910 else if (eq_asciicase(&comparator_name,&str_iascii_casemap,0))
1911 {
1912 *c=COMP_EN_ASCII_CASEMAP;
1913 match=1;
1914 }
1915 else if (eq_asciicase(&comparator_name,&str_enascii_casemap,0))
1916 {
1917 *c=COMP_EN_ASCII_CASEMAP;
1918 match=1;
1919 }
1920 else if (eq_asciicase(&comparator_name,&str_iascii_numeric,0))
1921 {
1922 *c=COMP_ASCII_NUMERIC;
1923 match=1;
1924 }
1925 else
1926 {
1927 filter->errmsg=CUS "invalid comparator";
1928 match=-1;
1929 }
1930 return match;
1931 }
1932 }
1933}
1934
1935
1936/*************************************************
1937* Parse an optional match type *
1938*************************************************/
1939
1940/*
1941Grammar:
1942 match-type = ":is" / ":contains" / ":matches"
1943
1944Arguments:
1945 filter points to the Sieve filter including its state
1946 m returns match type
1947
1948Returns: 1 success
1949 0 no match type found
1950*/
1951
1952static int parse_matchtype(struct Sieve *filter, enum MatchType *m)
1953{
1954 if (parse_identifier(filter,CUS ":is")==1)
1955 {
1956 *m=MATCH_IS;
1957 return 1;
1958 }
1959 else if (parse_identifier(filter,CUS ":contains")==1)
1960 {
1961 *m=MATCH_CONTAINS;
1962 return 1;
1963 }
1964 else if (parse_identifier(filter,CUS ":matches")==1)
1965 {
1966 *m=MATCH_MATCHES;
1967 return 1;
1968 }
1969 else return 0;
1970}
1971
1972
1973/*************************************************
1974* Parse and interpret an optional test list *
1975*************************************************/
1976
1977/*
1978Grammar:
1979 test-list = "(" test *("," test) ")"
1980
1981Arguments:
1982 filter points to the Sieve filter including its state
1983 n total number of tests
1984 num_true number of passed tests
1985 exec Execute parsed statements
1986
1987Returns: 1 success
1988 0 no test list found
1989 -1 syntax or execution error
1990*/
1991
1992static int parse_testlist(struct Sieve *filter, int *n, int *num_true, int exec)
1993{
1994if (parse_white(filter)==-1) return -1;
1995if (*filter->pc=='(')
1996 {
1997 ++filter->pc;
1998 *n=0;
1999 *num_true=0;
2000 for (;;)
2001 {
2002 int cond;
2003
2004 switch (parse_test(filter,&cond,exec))
2005 {
2006 case -1: return -1;
2007 case 0: filter->errmsg=CUS "missing test"; return -1;
2008 default: ++*n; if (cond) ++*num_true; break;
2009 }
2010 if (parse_white(filter)==-1) return -1;
2011 if (*filter->pc==',') ++filter->pc;
2012 else break;
2013 }
2014 if (*filter->pc==')')
2015 {
2016 ++filter->pc;
2017 return 1;
2018 }
2019 else
2020 {
2021 filter->errmsg=CUS "missing closing paren";
2022 return -1;
2023 }
2024 }
2025else return 0;
2026}
2027
2028
2029/*************************************************
2030* Parse and interpret an optional test *
2031*************************************************/
2032
2033/*
2034Arguments:
2035 filter points to the Sieve filter including its state
2036 cond returned condition status
2037 exec Execute parsed statements
2038
2039Returns: 1 success
2040 0 no test found
2041 -1 syntax or execution error
2042*/
2043
2044static int parse_test(struct Sieve *filter, int *cond, int exec)
2045{
2046if (parse_white(filter)==-1) return -1;
2047if (parse_identifier(filter,CUS "address"))
2048 {
2049 /*
2050 address-test = "address" { [address-part] [comparator] [match-type] }
2051 <header-list: string-list> <key-list: string-list>
2052
2053 header-list From, To, Cc, Bcc, Sender, Resent-From, Resent-To
2054 */
2055
2056 enum AddressPart addressPart=ADDRPART_ALL;
2057 enum Comparator comparator=COMP_EN_ASCII_CASEMAP;
2058 enum MatchType matchType=MATCH_IS;
2059 struct String *hdr,*h,*key,*k;
2060 int m;
2061 int ap=0,co=0,mt=0;
2062
2063 for (;;)
2064 {
2065 if (parse_white(filter)==-1) return -1;
2066 if ((m=parse_addresspart(filter,&addressPart))!=0)
2067 {
2068 if (m==-1) return -1;
2069 if (ap)
2070 {
2071 filter->errmsg=CUS "address part already specified";
2072 return -1;
2073 }
2074 else ap=1;
2075 }
2076 else if ((m=parse_comparator(filter,&comparator))!=0)
2077 {
2078 if (m==-1) return -1;
2079 if (co)
2080 {
2081 filter->errmsg=CUS "comparator already specified";
2082 return -1;
2083 }
2084 else co=1;
2085 }
2086 else if ((m=parse_matchtype(filter,&matchType))!=0)
2087 {
2088 if (m==-1) return -1;
2089 if (mt)
2090 {
2091 filter->errmsg=CUS "match type already specified";
2092 return -1;
2093 }
2094 else mt=1;
2095 }
2096 else break;
2097 }
2098 if (parse_white(filter)==-1) return -1;
2099 if ((m=parse_stringlist(filter,&hdr))!=1)
2100 {
2101 if (m==0) filter->errmsg=CUS "header string list expected";
2102 return -1;
2103 }
2104 if (parse_white(filter)==-1) return -1;
2105 if ((m=parse_stringlist(filter,&key))!=1)
2106 {
2107 if (m==0) filter->errmsg=CUS "key string list expected";
2108 return -1;
2109 }
2110 *cond=0;
2111 for (h=hdr; h->length!=-1 && !*cond; ++h)
2112 {
2113 uschar *header_value=(uschar*)0,*extracted_addr,*end_addr;
2114
2115 if
2116 (
2117 !eq_asciicase(h,&str_from,0)
2118 && !eq_asciicase(h,&str_to,0)
2119 && !eq_asciicase(h,&str_cc,0)
2120 && !eq_asciicase(h,&str_bcc,0)
2121 && !eq_asciicase(h,&str_sender,0)
2122 && !eq_asciicase(h,&str_resent_from,0)
2123 && !eq_asciicase(h,&str_resent_to,0)
2124 )
2125 {
2126 filter->errmsg=CUS "invalid header field";
2127 return -1;
2128 }
2129 if (exec)
2130 {
2131 /* We are only interested in addresses below, so no MIME decoding */
2132 header_value=expand_string(string_sprintf("$rheader_%s",quote(h)));
2133 if (header_value == NULL)
2134 {
2135 filter->errmsg=CUS "header string expansion failed";
2136 return -1;
2137 }
2138 parse_allow_group = TRUE;
2139 while (*header_value && !*cond)
2140 {
2141 uschar *error;
2142 int start, end, domain;
2143 int saveend;
2144 uschar *part=NULL;
2145
2146 end_addr = parse_find_address_end(header_value, FALSE);
2147 saveend = *end_addr;
2148 *end_addr = 0;
2149 extracted_addr = parse_extract_address(header_value, &error, &start, &end, &domain, FALSE);
2150
2151 if (extracted_addr) switch (addressPart)
2152 {
2153 case ADDRPART_ALL: part=extracted_addr; break;
2154#ifdef SUBADDRESS
2155 case ADDRPART_USER:
2156#endif
2157 case ADDRPART_LOCALPART: part=extracted_addr; part[domain-1]='\0'; break;
2158 case ADDRPART_DOMAIN: part=extracted_addr+domain; break;
2159#ifdef SUBADDRESS
2160 case ADDRPART_DETAIL: part=NULL; break;
2161#endif
2162 }
2163
2164 *end_addr = saveend;
2165 if (part)
2166 {
2167 for (k=key; k->length!=-1; ++k)
2168 {
2169 struct String partStr;
2170
2171 partStr.character=part;
2172 partStr.length=Ustrlen(part);
2173 if (extracted_addr)
2174 {
2175 *cond=compare(filter,k,&partStr,comparator,matchType);
2176 if (*cond==-1) return -1;
2177 if (*cond) break;
2178 }
2179 }
2180 }
2181 if (saveend == 0) break;
2182 header_value = end_addr + 1;
2183 }
2184 parse_allow_group = FALSE;
2185 parse_found_group = FALSE;
2186 }
2187 }
2188 return 1;
2189 }
2190else if (parse_identifier(filter,CUS "allof"))
2191 {
2192 /*
2193 allof-test = "allof" <tests: test-list>
2194 */
2195
2196 int n,num_true;
2197
2198 switch (parse_testlist(filter,&n,&num_true,exec))
2199 {
2200 case -1: return -1;
2201 case 0: filter->errmsg=CUS "missing test list"; return -1;
2202 default: *cond=(n==num_true); return 1;
2203 }
2204 }
2205else if (parse_identifier(filter,CUS "anyof"))
2206 {
2207 /*
2208 anyof-test = "anyof" <tests: test-list>
2209 */
2210
2211 int n,num_true;
2212
2213 switch (parse_testlist(filter,&n,&num_true,exec))
2214 {
2215 case -1: return -1;
2216 case 0: filter->errmsg=CUS "missing test list"; return -1;
2217 default: *cond=(num_true>0); return 1;
2218 }
2219 }
2220else if (parse_identifier(filter,CUS "exists"))
2221 {
2222 /*
2223 exists-test = "exists" <header-names: string-list>
2224 */
2225
2226 struct String *hdr,*h;
2227 int m;
2228
2229 if (parse_white(filter)==-1) return -1;
2230 if ((m=parse_stringlist(filter,&hdr))!=1)
2231 {
2232 if (m==0) filter->errmsg=CUS "header string list expected";
2233 return -1;
2234 }
2235 if (exec)
2236 {
2237 *cond=1;
2238 for (h=hdr; h->length!=-1 && *cond; ++h)
2239 {
2240 uschar *header_def;
2241
2242 header_def=expand_string(string_sprintf("${if def:header_%s {true}{false}}",quote(h)));
2243 if (header_def == NULL)
2244 {
2245 filter->errmsg=CUS "header string expansion failed";
2246 return -1;
2247 }
2248 if (Ustrcmp(header_def,"false")==0) *cond=0;
2249 }
2250 }
2251 return 1;
2252 }
2253else if (parse_identifier(filter,CUS "false"))
2254 {
2255 /*
2256 false-test = "false"
2257 */
2258
2259 *cond=0;
2260 return 1;
2261 }
2262else if (parse_identifier(filter,CUS "header"))
2263 {
2264 /*
2265 header-test = "header" { [comparator] [match-type] }
2266 <header-names: string-list> <key-list: string-list>
2267 */
2268
2269 enum Comparator comparator=COMP_EN_ASCII_CASEMAP;
2270 enum MatchType matchType=MATCH_IS;
2271 struct String *hdr,*h,*key,*k;
2272 int m;
2273 int co=0,mt=0;
2274
2275 for (;;)
2276 {
2277 if (parse_white(filter)==-1) return -1;
2278 if ((m=parse_comparator(filter,&comparator))!=0)
2279 {
2280 if (m==-1) return -1;
2281 if (co)
2282 {
2283 filter->errmsg=CUS "comparator already specified";
2284 return -1;
2285 }
2286 else co=1;
2287 }
2288 else if ((m=parse_matchtype(filter,&matchType))!=0)
2289 {
2290 if (m==-1) return -1;
2291 if (mt)
2292 {
2293 filter->errmsg=CUS "match type already specified";
2294 return -1;
2295 }
2296 else mt=1;
2297 }
2298 else break;
2299 }
2300 if (parse_white(filter)==-1) return -1;
2301 if ((m=parse_stringlist(filter,&hdr))!=1)
2302 {
2303 if (m==0) filter->errmsg=CUS "header string list expected";
2304 return -1;
2305 }
2306 if (parse_white(filter)==-1) return -1;
2307 if ((m=parse_stringlist(filter,&key))!=1)
2308 {
2309 if (m==0) filter->errmsg=CUS "key string list expected";
2310 return -1;
2311 }
2312 *cond=0;
2313 for (h=hdr; h->length!=-1 && !*cond; ++h)
2314 {
2315 if (!is_header(h))
2316 {
2317 filter->errmsg=CUS "invalid header field";
2318 return -1;
2319 }
2320 if (exec)
2321 {
2322 struct String header_value;
2323 uschar *header_def;
2324
2325 expand_header(&header_value,h);
2326 header_def=expand_string(string_sprintf("${if def:header_%s {true}{false}}",quote(h)));
2327 if (header_value.character == NULL || header_def == NULL)
2328 {
2329 filter->errmsg=CUS "header string expansion failed";
2330 return -1;
2331 }
2332 for (k=key; k->length!=-1; ++k)
2333 {
2334 if (Ustrcmp(header_def,"true")==0)
2335 {
2336 *cond=compare(filter,k,&header_value,comparator,matchType);
2337 if (*cond==-1) return -1;
2338 if (*cond) break;
2339 }
2340 }
2341 }
2342 }
2343 return 1;
2344 }
2345else if (parse_identifier(filter,CUS "not"))
2346 {
2347 if (parse_white(filter)==-1) return -1;
2348 switch (parse_test(filter,cond,exec))
2349 {
2350 case -1: return -1;
2351 case 0: filter->errmsg=CUS "missing test"; return -1;
2352 default: *cond=!*cond; return 1;
2353 }
2354 }
2355else if (parse_identifier(filter,CUS "size"))
2356 {
2357 /*
2358 relop = ":over" / ":under"
2359 size-test = "size" relop <limit: number>
2360 */
2361
2362 unsigned long limit;
2363 int overNotUnder;
2364
2365 if (parse_white(filter)==-1) return -1;
2366 if (parse_identifier(filter,CUS ":over")) overNotUnder=1;
2367 else if (parse_identifier(filter,CUS ":under")) overNotUnder=0;
2368 else
2369 {
2370 filter->errmsg=CUS "missing :over or :under";
2371 return -1;
2372 }
2373 if (parse_white(filter)==-1) return -1;
2374 if (parse_number(filter,&limit)==-1) return -1;
2375 *cond=(overNotUnder ? (message_size>limit) : (message_size<limit));
2376 return 1;
2377 }
2378else if (parse_identifier(filter,CUS "true"))
2379 {
2380 *cond=1;
2381 return 1;
2382 }
2383else if (parse_identifier(filter,CUS "envelope"))
2384 {
2385 /*
2386 envelope-test = "envelope" { [comparator] [address-part] [match-type] }
2387 <envelope-part: string-list> <key-list: string-list>
2388
2389 envelope-part is case insensitive "from" or "to"
2390#ifdef ENVELOPE_AUTH
2391 envelope-part =/ "auth"
2392#endif
2393 */
2394
2395 enum Comparator comparator=COMP_EN_ASCII_CASEMAP;
2396 enum AddressPart addressPart=ADDRPART_ALL;
2397 enum MatchType matchType=MATCH_IS;
2398 struct String *env,*e,*key,*k;
2399 int m;
2400 int co=0,ap=0,mt=0;
2401
2402 if (!filter->require_envelope)
2403 {
2404 filter->errmsg=CUS "missing previous require \"envelope\";";
2405 return -1;
2406 }
2407 for (;;)
2408 {
2409 if (parse_white(filter)==-1) return -1;
2410 if ((m=parse_comparator(filter,&comparator))!=0)
2411 {
2412 if (m==-1) return -1;
2413 if (co)
2414 {
2415 filter->errmsg=CUS "comparator already specified";
2416 return -1;
2417 }
2418 else co=1;
2419 }
2420 else if ((m=parse_addresspart(filter,&addressPart))!=0)
2421 {
2422 if (m==-1) return -1;
2423 if (ap)
2424 {
2425 filter->errmsg=CUS "address part already specified";
2426 return -1;
2427 }
2428 else ap=1;
2429 }
2430 else if ((m=parse_matchtype(filter,&matchType))!=0)
2431 {
2432 if (m==-1) return -1;
2433 if (mt)
2434 {
2435 filter->errmsg=CUS "match type already specified";
2436 return -1;
2437 }
2438 else mt=1;
2439 }
2440 else break;
2441 }
2442 if (parse_white(filter)==-1) return -1;
2443 if ((m=parse_stringlist(filter,&env))!=1)
2444 {
2445 if (m==0) filter->errmsg=CUS "envelope string list expected";
2446 return -1;
2447 }
2448 if (parse_white(filter)==-1) return -1;
2449 if ((m=parse_stringlist(filter,&key))!=1)
2450 {
2451 if (m==0) filter->errmsg=CUS "key string list expected";
2452 return -1;
2453 }
2454 *cond=0;
2455 for (e=env; e->length!=-1 && !*cond; ++e)
2456 {
2457 const uschar *envelopeExpr=CUS 0;
2458 uschar *envelope=US 0;
2459
2460 if (eq_asciicase(e,&str_from,0))
2461 {
2462 switch (addressPart)
2463 {
2464 case ADDRPART_ALL: envelopeExpr=CUS "$sender_address"; break;
2465#ifdef SUBADDRESS
2466 case ADDRPART_USER:
2467#endif
2468 case ADDRPART_LOCALPART: envelopeExpr=CUS "${local_part:$sender_address}"; break;
2469 case ADDRPART_DOMAIN: envelopeExpr=CUS "${domain:$sender_address}"; break;
2470#ifdef SUBADDRESS
2471 case ADDRPART_DETAIL: envelopeExpr=CUS 0; break;
2472#endif
2473 }
2474 }
2475 else if (eq_asciicase(e,&str_to,0))
2476 {
2477 switch (addressPart)
2478 {
2479 case ADDRPART_ALL: envelopeExpr=CUS "$local_part_prefix$local_part$local_part_suffix@$domain"; break;
2480#ifdef SUBADDRESS
2481 case ADDRPART_USER: envelopeExpr=filter->useraddress; break;
2482 case ADDRPART_DETAIL: envelopeExpr=filter->subaddress; break;
2483#endif
2484 case ADDRPART_LOCALPART: envelopeExpr=CUS "$local_part_prefix$local_part$local_part_suffix"; break;
2485 case ADDRPART_DOMAIN: envelopeExpr=CUS "$domain"; break;
2486 }
2487 }
2488#ifdef ENVELOPE_AUTH
2489 else if (eq_asciicase(e,&str_auth,0))
2490 {
2491 switch (addressPart)
2492 {
2493 case ADDRPART_ALL: envelopeExpr=CUS "$authenticated_sender"; break;
2494#ifdef SUBADDRESS
2495 case ADDRPART_USER:
2496#endif
2497 case ADDRPART_LOCALPART: envelopeExpr=CUS "${local_part:$authenticated_sender}"; break;
2498 case ADDRPART_DOMAIN: envelopeExpr=CUS "${domain:$authenticated_sender}"; break;
2499#ifdef SUBADDRESS
2500 case ADDRPART_DETAIL: envelopeExpr=CUS 0; break;
2501#endif
2502 }
2503 }
2504#endif
2505 else
2506 {
2507 filter->errmsg=CUS "invalid envelope string";
2508 return -1;
2509 }
2510 if (exec && envelopeExpr)
2511 {
2512 if ((envelope=expand_string(US envelopeExpr)) == NULL)
2513 {
2514 filter->errmsg=CUS "header string expansion failed";
2515 return -1;
2516 }
2517 for (k=key; k->length!=-1; ++k)
2518 {
2519 struct String envelopeStr;
2520
2521 envelopeStr.character=envelope;
2522 envelopeStr.length=Ustrlen(envelope);
2523 *cond=compare(filter,k,&envelopeStr,comparator,matchType);
2524 if (*cond==-1) return -1;
2525 if (*cond) break;
2526 }
2527 }
2528 }
2529 return 1;
2530 }
2531#ifdef ENOTIFY
2532else if (parse_identifier(filter,CUS "valid_notify_method"))
2533 {
2534 /*
2535 valid_notify_method = "valid_notify_method"
2536 <notification-uris: string-list>
2537 */
2538
2539 struct String *uris,*u;
2540 int m;
2541
2542 if (!filter->require_enotify)
2543 {
2544 filter->errmsg=CUS "missing previous require \"enotify\";";
2545 return -1;
2546 }
2547 if (parse_white(filter)==-1) return -1;
2548 if ((m=parse_stringlist(filter,&uris))!=1)
2549 {
2550 if (m==0) filter->errmsg=CUS "URI string list expected";
2551 return -1;
2552 }
2553 if (exec)
2554 {
2555 *cond=1;
2556 for (u=uris; u->length!=-1 && *cond; ++u)
2557 {
2558 string_item *recipient;
2559 struct String header,subject,body;
2560
2561 recipient=NULL;
2562 header.length=-1;
2563 header.character=(uschar*)0;
2564 subject.length=-1;
2565 subject.character=(uschar*)0;
2566 body.length=-1;
2567 body.character=(uschar*)0;
2568 if (parse_mailto_uri(filter,u->character,&recipient,&header,&subject,&body)!=1)
2569 *cond=0;
2570 }
2571 }
2572 return 1;
2573 }
2574else if (parse_identifier(filter,CUS "notify_method_capability"))
2575 {
2576 /*
2577 notify_method_capability = "notify_method_capability" [COMPARATOR] [MATCH-TYPE]
2578 <notification-uri: string>
2579 <notification-capability: string>
2580 <key-list: string-list>
2581 */
2582
2583 int m;
2584 int co=0,mt=0;
2585
2586 enum Comparator comparator=COMP_EN_ASCII_CASEMAP;
2587 enum MatchType matchType=MATCH_IS;
2588 struct String uri,capa,*keys,*k;
2589
2590 if (!filter->require_enotify)
2591 {
2592 filter->errmsg=CUS "missing previous require \"enotify\";";
2593 return -1;
2594 }
2595 for (;;)
2596 {
2597 if (parse_white(filter)==-1) return -1;
2598 if ((m=parse_comparator(filter,&comparator))!=0)
2599 {
2600 if (m==-1) return -1;
2601 if (co)
2602 {
2603 filter->errmsg=CUS "comparator already specified";
2604 return -1;
2605 }
2606 else co=1;
2607 }
2608 else if ((m=parse_matchtype(filter,&matchType))!=0)
2609 {
2610 if (m==-1) return -1;
2611 if (mt)
2612 {
2613 filter->errmsg=CUS "match type already specified";
2614 return -1;
2615 }
2616 else mt=1;
2617 }
2618 else break;
2619 }
2620 if ((m=parse_string(filter,&uri))!=1)
2621 {
2622 if (m==0) filter->errmsg=CUS "missing notification URI string";
2623 return -1;
2624 }
2625 if (parse_white(filter)==-1) return -1;
2626 if ((m=parse_string(filter,&capa))!=1)
2627 {
2628 if (m==0) filter->errmsg=CUS "missing notification capability string";
2629 return -1;
2630 }
2631 if (parse_white(filter)==-1) return -1;
2632 if ((m=parse_stringlist(filter,&keys))!=1)
2633 {
2634 if (m==0) filter->errmsg=CUS "missing key string list";
2635 return -1;
2636 }
2637 if (exec)
2638 {
2639 string_item *recipient;
2640 struct String header,subject,body;
2641
2642 *cond=0;
2643 recipient=NULL;
2644 header.length=-1;
2645 header.character=(uschar*)0;
2646 subject.length=-1;
2647 subject.character=(uschar*)0;
2648 body.length=-1;
2649 body.character=(uschar*)0;
2650 if (parse_mailto_uri(filter,uri.character,&recipient,&header,&subject,&body)==1)
2651 {
2652 if (eq_asciicase(&capa,&str_online,0)==1)
2653 for (k=keys; k->length!=-1; ++k)
2654 {
2655 *cond=compare(filter,k,&str_maybe,comparator,matchType);
2656 if (*cond==-1) return -1;
2657 if (*cond) break;
2658 }
2659 }
2660 }
2661 return 1;
2662 }
2663#endif
2664else return 0;
2665}
2666
2667
2668/*************************************************
2669* Parse and interpret an optional block *
2670*************************************************/
2671
2672/*
2673Arguments:
2674 filter points to the Sieve filter including its state
2675 exec Execute parsed statements
2676 generated where to hang newly-generated addresses
2677
2678Returns: 2 success by stop
2679 1 other success
2680 0 no block command found
2681 -1 syntax or execution error
2682*/
2683
2684static int parse_block(struct Sieve *filter, int exec,
2685 address_item **generated)
2686{
2687int r;
2688
2689if (parse_white(filter)==-1) return -1;
2690if (*filter->pc=='{')
2691 {
2692 ++filter->pc;
2693 if ((r=parse_commands(filter,exec,generated))==-1 || r==2) return r;
2694 if (*filter->pc=='}')
2695 {
2696 ++filter->pc;
2697 return 1;
2698 }
2699 else
2700 {
2701 filter->errmsg=CUS "expecting command or closing brace";
2702 return -1;
2703 }
2704 }
2705else return 0;
2706}
2707
2708
2709/*************************************************
2710* Match a semicolon *
2711*************************************************/
2712
2713/*
2714Arguments:
2715 filter points to the Sieve filter including its state
2716
2717Returns: 1 success
2718 -1 syntax error
2719*/
2720
2721static int parse_semicolon(struct Sieve *filter)
2722{
2723 if (parse_white(filter)==-1) return -1;
2724 if (*filter->pc==';')
2725 {
2726 ++filter->pc;
2727 return 1;
2728 }
2729 else
2730 {
2731 filter->errmsg=CUS "missing semicolon";
2732 return -1;
2733 }
2734}
2735
2736
2737/*************************************************
2738* Parse and interpret a Sieve command *
2739*************************************************/
2740
2741/*
2742Arguments:
2743 filter points to the Sieve filter including its state
2744 exec Execute parsed statements
2745 generated where to hang newly-generated addresses
2746
2747Returns: 2 success by stop
2748 1 other success
2749 -1 syntax or execution error
2750*/
2751static int
2752parse_commands(struct Sieve *filter, int exec, address_item **generated)
2753{
2754while (*filter->pc)
2755 {
2756 if (parse_white(filter)==-1) return -1;
2757 if (parse_identifier(filter,CUS "if"))
2758 {
2759 /*
2760 if-command = "if" test block *( "elsif" test block ) [ else block ]
2761 */
2762
2763 int cond,m,unsuccessful;
2764
2765 /* test block */
2766 if (parse_white(filter)==-1) return -1;
2767 if ((m=parse_test(filter,&cond,exec))==-1) return -1;
2768 if (m==0)
2769 {
2770 filter->errmsg=CUS "missing test";
2771 return -1;
2772 }
2773 if ((filter_test != FTEST_NONE && debug_selector != 0) ||
2774 (debug_selector & D_filter) != 0)
2775 {
2776 if (exec) debug_printf("if %s\n",cond?"true":"false");
2777 }
2778 m=parse_block(filter,exec ? cond : 0, generated);
2779 if (m==-1 || m==2) return m;
2780 if (m==0)
2781 {
2782 filter->errmsg=CUS "missing block";
2783 return -1;
2784 }
2785 unsuccessful = !cond;
2786 for (;;) /* elsif test block */
2787 {
2788 if (parse_white(filter)==-1) return -1;
2789 if (parse_identifier(filter,CUS "elsif"))
2790 {
2791 if (parse_white(filter)==-1) return -1;
2792 m=parse_test(filter,&cond,exec && unsuccessful);
2793 if (m==-1 || m==2) return m;
2794 if (m==0)
2795 {
2796 filter->errmsg=CUS "missing test";
2797 return -1;
2798 }
2799 if ((filter_test != FTEST_NONE && debug_selector != 0) ||
2800 (debug_selector & D_filter) != 0)
2801 {
2802 if (exec) debug_printf("elsif %s\n",cond?"true":"false");
2803 }
2804 m=parse_block(filter,exec && unsuccessful ? cond : 0, generated);
2805 if (m==-1 || m==2) return m;
2806 if (m==0)
2807 {
2808 filter->errmsg=CUS "missing block";
2809 return -1;
2810 }
2811 if (exec && unsuccessful && cond) unsuccessful = 0;
2812 }
2813 else break;
2814 }
2815 /* else block */
2816 if (parse_white(filter)==-1) return -1;
2817 if (parse_identifier(filter,CUS "else"))
2818 {
2819 m=parse_block(filter,exec && unsuccessful, generated);
2820 if (m==-1 || m==2) return m;
2821 if (m==0)
2822 {
2823 filter->errmsg=CUS "missing block";
2824 return -1;
2825 }
2826 }
2827 }
2828 else if (parse_identifier(filter,CUS "stop"))
2829 {
2830 /*
2831 stop-command = "stop" { stop-options } ";"
2832 stop-options =
2833 */
2834
2835 if (parse_semicolon(filter)==-1) return -1;
2836 if (exec)
2837 {
2838 filter->pc+=Ustrlen(filter->pc);
2839 return 2;
2840 }
2841 }
2842 else if (parse_identifier(filter,CUS "keep"))
2843 {
2844 /*
2845 keep-command = "keep" { keep-options } ";"
2846 keep-options =
2847 */
2848
2849 if (parse_semicolon(filter)==-1) return -1;
2850 if (exec)
2851 {
2852 add_addr(generated,US"inbox",1,0,0,0);
2853 filter->keep = 0;
2854 }
2855 }
2856 else if (parse_identifier(filter,CUS "discard"))
2857 {
2858 /*
2859 discard-command = "discard" { discard-options } ";"
2860 discard-options =
2861 */
2862
2863 if (parse_semicolon(filter)==-1) return -1;
2864 if (exec) filter->keep=0;
2865 }
2866 else if (parse_identifier(filter,CUS "redirect"))
2867 {
2868 /*
2869 redirect-command = "redirect" redirect-options "string" ";"
2870 redirect-options =
2871 redirect-options =) ":copy"
2872 */
2873
2874 struct String recipient;
2875 int m;
2876 int copy=0;
2877
2878 for (;;)
2879 {
2880 if (parse_white(filter)==-1) return -1;
2881 if (parse_identifier(filter,CUS ":copy")==1)
2882 {
2883 if (!filter->require_copy)
2884 {
2885 filter->errmsg=CUS "missing previous require \"copy\";";
2886 return -1;
2887 }
2888 copy=1;
2889 }
2890 else break;
2891 }
2892 if (parse_white(filter)==-1) return -1;
2893 if ((m=parse_string(filter,&recipient))!=1)
2894 {
2895 if (m==0) filter->errmsg=CUS "missing redirect recipient string";
2896 return -1;
2897 }
2898 if (strchr(CCS recipient.character,'@')==(char*)0)
2899 {
2900 filter->errmsg=CUS "unqualified recipient address";
2901 return -1;
2902 }
2903 if (exec)
2904 {
2905 add_addr(generated,recipient.character,0,0,0,0);
2906 if (!copy) filter->keep = 0;
2907 }
2908 if (parse_semicolon(filter)==-1) return -1;
2909 }
2910 else if (parse_identifier(filter,CUS "fileinto"))
2911 {
2912 /*
2913 fileinto-command = "fileinto" { fileinto-options } string ";"
2914 fileinto-options =
2915 fileinto-options =) [ ":copy" ]
2916 */
2917
2918 struct String folder;
2919 uschar *s;
2920 int m;
2921 unsigned long maxage, maxmessages, maxstorage;
2922 int copy=0;
2923
2924 maxage = maxmessages = maxstorage = 0;
2925 if (!filter->require_fileinto)
2926 {
2927 filter->errmsg=CUS "missing previous require \"fileinto\";";
2928 return -1;
2929 }
2930 for (;;)
2931 {
2932 if (parse_white(filter)==-1) return -1;
2933 if (parse_identifier(filter,CUS ":copy")==1)
2934 {
2935 if (!filter->require_copy)
2936 {
2937 filter->errmsg=CUS "missing previous require \"copy\";";
2938 return -1;
2939 }
2940 copy=1;
2941 }
2942 else break;
2943 }
2944 if (parse_white(filter)==-1) return -1;
2945 if ((m=parse_string(filter,&folder))!=1)
2946 {
2947 if (m==0) filter->errmsg=CUS "missing fileinto folder string";
2948 return -1;
2949 }
2950 m=0; s=folder.character;
2951 if (folder.length==0) m=1;
2952 if (Ustrcmp(s,"..")==0 || Ustrncmp(s,"../",3)==0) m=1;
2953 else while (*s)
2954 {
2955 if (Ustrcmp(s,"/..")==0 || Ustrncmp(s,"/../",4)==0) { m=1; break; }
2956 ++s;
2957 }
2958 if (m)
2959 {
2960 filter->errmsg=CUS "invalid folder";
2961 return -1;
2962 }
2963 if (exec)
2964 {
2965 add_addr(generated, folder.character, 1, maxage, maxmessages, maxstorage);
2966 if (!copy) filter->keep = 0;
2967 }
2968 if (parse_semicolon(filter)==-1) return -1;
2969 }
2970#ifdef ENOTIFY
2971 else if (parse_identifier(filter,CUS "notify"))
2972 {
2973 /*
2974 notify-command = "notify" { notify-options } <method: string> ";"
2975 notify-options = [":from" string]
2976 [":importance" <"1" / "2" / "3">]
2977 [":options" 1*(string-list / number)]
2978 [":message" string]
2979 */
2980
2981 int m;
2982 struct String from;
2983 struct String importance;
2984 struct String message;
2985 struct String method;
2986 struct Notification *already;
2987 string_item *recipient;
2988 struct String header;
2989 struct String subject;
2990 struct String body;
2991 uschar *envelope_from;
2992 struct String auto_submitted_value;
2993 uschar *auto_submitted_def;
2994
2995 if (!filter->require_enotify)
2996 {
2997 filter->errmsg=CUS "missing previous require \"enotify\";";
2998 return -1;
2999 }
3000 from.character=(uschar*)0;
3001 from.length=-1;
3002 importance.character=(uschar*)0;
3003 importance.length=-1;
3004 message.character=(uschar*)0;
3005 message.length=-1;
3006 recipient=NULL;
3007 header.length=-1;
3008 header.character=(uschar*)0;
3009 subject.length=-1;
3010 subject.character=(uschar*)0;
3011 body.length=-1;
3012 body.character=(uschar*)0;
3013 envelope_from=(sender_address && sender_address[0]) ? expand_string(US"$local_part_prefix$local_part$local_part_suffix@$domain") : US "";
3014 for (;;)
3015 {
3016 if (parse_white(filter)==-1) return -1;
3017 if (parse_identifier(filter,CUS ":from")==1)
3018 {
3019 if (parse_white(filter)==-1) return -1;
3020 if ((m=parse_string(filter,&from))!=1)
3021 {
3022 if (m==0) filter->errmsg=CUS "from string expected";
3023 return -1;
3024 }
3025 }
3026 else if (parse_identifier(filter,CUS ":importance")==1)
3027 {
3028 if (parse_white(filter)==-1) return -1;
3029 if ((m=parse_string(filter,&importance))!=1)
3030 {
3031 if (m==0) filter->errmsg=CUS "importance string expected";
3032 return -1;
3033 }
3034 if (importance.length!=1 || importance.character[0]<'1' || importance.character[0]>'3')
3035 {
3036 filter->errmsg=CUS "invalid importance";
3037 return -1;
3038 }
3039 }
3040 else if (parse_identifier(filter,CUS ":options")==1)
3041 {
3042 if (parse_white(filter)==-1) return -1;
3043 }
3044 else if (parse_identifier(filter,CUS ":message")==1)
3045 {
3046 if (parse_white(filter)==-1) return -1;
3047 if ((m=parse_string(filter,&message))!=1)
3048 {
3049 if (m==0) filter->errmsg=CUS "message string expected";
3050 return -1;
3051 }
3052 }
3053 else break;
3054 }
3055 if (parse_white(filter)==-1) return -1;
3056 if ((m=parse_string(filter,&method))!=1)
3057 {
3058 if (m==0) filter->errmsg=CUS "missing method string";
3059 return -1;
3060 }
3061 if (parse_semicolon(filter)==-1) return -1;
3062 if (parse_mailto_uri(filter,method.character,&recipient,&header,&subject,&body)!=1)
3063 return -1;
3064 if (exec)
3065 {
3066 if (message.length==-1) message=subject;
3067 if (message.length==-1) expand_header(&message,&str_subject);
3068 expand_header(&auto_submitted_value,&str_auto_submitted);
3069 auto_submitted_def=expand_string(string_sprintf("${if def:header_auto-submitted {true}{false}}"));
3070 if (auto_submitted_value.character == NULL || auto_submitted_def == NULL)
3071 {
3072 filter->errmsg=CUS "header string expansion failed";
3073 return -1;
3074 }
3075 if (Ustrcmp(auto_submitted_def,"true")!=0 || Ustrcmp(auto_submitted_value.character,"no")==0)
3076 {
3077 for (already=filter->notified; already; already=already->next)
3078 {
3079 if (already->method.length==method.length
3080 && (method.length==-1 || Ustrcmp(already->method.character,method.character)==0)
3081 && already->importance.length==importance.length
3082 && (importance.length==-1 || Ustrcmp(already->importance.character,importance.character)==0)
3083 && already->message.length==message.length
3084 && (message.length==-1 || Ustrcmp(already->message.character,message.character)==0))
3085 break;
3086 }
3087 if (already==(struct Notification*)0)
3088 /* New notification, process it */
3089 {
3090 struct Notification *sent;
3091 sent=store_get(sizeof(struct Notification));
3092 sent->method=method;
3093 sent->importance=importance;
3094 sent->message=message;
3095 sent->next=filter->notified;
3096 filter->notified=sent;
3097 #ifndef COMPILE_SYNTAX_CHECKER
3098 if (filter_test == FTEST_NONE)
3099 {
3100 string_item *p;
3101 int pid,fd;
3102
3103 if ((pid = child_open_exim2(&fd,envelope_from,envelope_from))>=1)
3104 {
3105 FILE *f;
3106 uschar *buffer;
3107 int buffer_capacity;
3108
3109 f = fdopen(fd, "wb");
3110 fprintf(f,"From: %s\n",from.length==-1 ? expand_string(US"$local_part_prefix$local_part$local_part_suffix@$domain") : from.character);
3111 for (p=recipient; p; p=p->next) fprintf(f,"To: %s\n",p->text);
3112 fprintf(f,"Auto-Submitted: auto-notified; %s\n",filter->enotify_mailto_owner);
3113 if (header.length>0) fprintf(f,"%s",header.character);
3114 if (message.length==-1)
3115 {
3116 message.character=US"Notification";
3117 message.length=Ustrlen(message.character);
3118 }
3119 /* Allocation is larger than necessary, but enough even for split MIME words */
3120 buffer_capacity=32+4*message.length;
3121 buffer=store_get(buffer_capacity);
3122 if (message.length!=-1) fprintf(f,"Subject: %s\n",parse_quote_2047(message.character, message.length, US"utf-8", buffer, buffer_capacity, TRUE));
3123 fprintf(f,"\n");
3124 if (body.length>0) fprintf(f,"%s\n",body.character);
3125 fflush(f);
3126 (void)fclose(f);
3127 (void)child_close(pid, 0);
3128 }
3129 }
3130 if ((filter_test != FTEST_NONE && debug_selector != 0) || (debug_selector & D_filter) != 0)
3131 {
3132 debug_printf("Notification to `%s': '%s'.\n",method.character,message.length!=-1 ? message.character : CUS "");
3133 }
3134#endif
3135 }
3136 else
3137 {
3138 if ((filter_test != FTEST_NONE && debug_selector != 0) || (debug_selector & D_filter) != 0)
3139 {
3140 debug_printf("Repeated notification to `%s' ignored.\n",method.character);
3141 }
3142 }
3143 }
3144 else
3145 {
3146 if ((filter_test != FTEST_NONE && debug_selector != 0) || (debug_selector & D_filter) != 0)
3147 {
3148 debug_printf("Ignoring notification, triggering message contains Auto-submitted: field.\n");
3149 }
3150 }
3151 }
3152 }
3153#endif
3154#ifdef VACATION
3155 else if (parse_identifier(filter,CUS "vacation"))
3156 {
3157 /*
3158 vacation-command = "vacation" { vacation-options } <reason: string> ";"
3159 vacation-options = [":days" number]
3160 [":subject" string]
3161 [":from" string]
3162 [":addresses" string-list]
3163 [":mime"]
3164 [":handle" string]
3165 */
3166
3167 int m;
3168 unsigned long days;
3169 struct String subject;
3170 struct String from;
3171 struct String *addresses;
3172 int reason_is_mime;
3173 string_item *aliases;
3174 struct String handle;
3175 struct String reason;
3176
3177 if (!filter->require_vacation)
3178 {
3179 filter->errmsg=CUS "missing previous require \"vacation\";";
3180 return -1;
3181 }
3182 if (exec)
3183 {
3184 if (filter->vacation_ran)
3185 {
3186 filter->errmsg=CUS "trying to execute vacation more than once";
3187 return -1;
3188 }
3189 filter->vacation_ran=1;
3190 }
3191 days=VACATION_MIN_DAYS>7 ? VACATION_MIN_DAYS : 7;
3192 subject.character=(uschar*)0;
3193 subject.length=-1;
3194 from.character=(uschar*)0;
3195 from.length=-1;
3196 addresses=(struct String*)0;
3197 aliases=NULL;
3198 reason_is_mime=0;
3199 handle.character=(uschar*)0;
3200 handle.length=-1;
3201 for (;;)
3202 {
3203 if (parse_white(filter)==-1) return -1;
3204 if (parse_identifier(filter,CUS ":days")==1)
3205 {
3206 if (parse_white(filter)==-1) return -1;
3207 if (parse_number(filter,&days)==-1) return -1;
3208 if (days<VACATION_MIN_DAYS) days=VACATION_MIN_DAYS;
3209 else if (days>VACATION_MAX_DAYS) days=VACATION_MAX_DAYS;
3210 }
3211 else if (parse_identifier(filter,CUS ":subject")==1)
3212 {
3213 if (parse_white(filter)==-1) return -1;
3214 if ((m=parse_string(filter,&subject))!=1)
3215 {
3216 if (m==0) filter->errmsg=CUS "subject string expected";
3217 return -1;
3218 }
3219 }
3220 else if (parse_identifier(filter,CUS ":from")==1)
3221 {
3222 if (parse_white(filter)==-1) return -1;
3223 if ((m=parse_string(filter,&from))!=1)
3224 {
3225 if (m==0) filter->errmsg=CUS "from string expected";
3226 return -1;
3227 }
3228 if (check_mail_address(filter,&from)!=1)
3229 return -1;
3230 }
3231 else if (parse_identifier(filter,CUS ":addresses")==1)
3232 {
3233 struct String *a;
3234
3235 if (parse_white(filter)==-1) return -1;
3236 if ((m=parse_stringlist(filter,&addresses))!=1)
3237 {
3238 if (m==0) filter->errmsg=CUS "addresses string list expected";
3239 return -1;
3240 }
3241 for (a=addresses; a->length!=-1; ++a)
3242 {
3243 string_item *new;
3244
3245 new=store_get(sizeof(string_item));
3246 new->text=store_get(a->length+1);
3247 if (a->length) memcpy(new->text,a->character,a->length);
3248 new->text[a->length]='\0';
3249 new->next=aliases;
3250 aliases=new;
3251 }
3252 }
3253 else if (parse_identifier(filter,CUS ":mime")==1)
3254 reason_is_mime=1;
3255 else if (parse_identifier(filter,CUS ":handle")==1)
3256 {
3257 if (parse_white(filter)==-1) return -1;
3258 if ((m=parse_string(filter,&from))!=1)
3259 {
3260 if (m==0) filter->errmsg=CUS "handle string expected";
3261 return -1;
3262 }
3263 }
3264 else break;
3265 }
3266 if (parse_white(filter)==-1) return -1;
3267 if ((m=parse_string(filter,&reason))!=1)
3268 {
3269 if (m==0) filter->errmsg=CUS "missing reason string";
3270 return -1;
3271 }
3272 if (reason_is_mime)
3273 {
3274 uschar *s,*end;
3275
3276 for (s=reason.character,end=reason.character+reason.length; s<end && (*s&0x80)==0; ++s);
3277 if (s<end)
3278 {
3279 filter->errmsg=CUS "MIME reason string contains 8bit text";
3280 return -1;
3281 }
3282 }
3283 if (parse_semicolon(filter)==-1) return -1;
3284
3285 if (exec)
3286 {
3287 address_item *addr;
3288 uschar *buffer;
3289 int buffer_capacity;
3290 md5 base;
3291 uschar digest[16];
3292 uschar hexdigest[33];
3293 int i;
3294 gstring * once;
3295
3296 if (filter_personal(aliases,TRUE))
3297 {
3298 if (filter_test == FTEST_NONE)
3299 {
3300 /* ensure oncelog directory exists; failure will be detected later */
3301
3302 (void)directory_make(NULL, filter->vacation_directory, 0700, FALSE);
3303 }
3304 /* build oncelog filename */
3305
3306 md5_start(&base);
3307
3308 if (handle.length==-1)
3309 {
3310 gstring * key = NULL;
3311 if (subject.length!=-1) key =string_catn(key, subject.character, subject.length);
3312 if (from.length!=-1) key = string_catn(key, from.character, from.length);
3313 key = string_catn(key, reason_is_mime?US"1":US"0", 1);
3314 key = string_catn(key, reason.character, reason.length);
3315 md5_end(&base, key->s, key->ptr, digest);
3316 }
3317 else
3318 md5_end(&base, handle.character, handle.length, digest);
3319
3320 for (i = 0; i < 16; i++) sprintf(CS (hexdigest+2*i), "%02X", digest[i]);
3321
3322 if ((filter_test != FTEST_NONE && debug_selector != 0) || (debug_selector & D_filter) != 0)
3323 debug_printf("Sieve: mail was personal, vacation file basename: %s\n", hexdigest);
3324
3325 if (filter_test == FTEST_NONE)
3326 {
3327 once = string_cat (NULL, filter->vacation_directory);
3328 once = string_catn(once, US"/", 1);
3329 once = string_catn(once, hexdigest, 33);
3330
3331 /* process subject */
3332
3333 if (subject.length==-1)
3334 {
3335 uschar *subject_def;
3336
3337 subject_def=expand_string(US"${if def:header_subject {true}{false}}");
3338 if (Ustrcmp(subject_def,"true")==0)
3339 {
3340 gstring * g = string_catn(NULL, US"Auto: ", 6);
3341
3342 expand_header(&subject,&str_subject);
3343 g = string_catn(g, subject.character, subject.length);
3344 subject.character = string_from_gstring(g);
3345 subject.length = g->ptr;
3346 }
3347 else
3348 {
3349 subject.character=US"Automated reply";
3350 subject.length=Ustrlen(subject.character);
3351 }
3352 }
3353
3354 /* add address to list of generated addresses */
3355
3356 addr = deliver_make_addr(string_sprintf(">%.256s", sender_address), FALSE);
3357 setflag(addr, af_pfr);
3358 addr->prop.ignore_error = TRUE;
3359 addr->next = *generated;
3360 *generated = addr;
3361 addr->reply = store_get(sizeof(reply_item));
3362 memset(addr->reply,0,sizeof(reply_item)); /* XXX */
3363 addr->reply->to = string_copy(sender_address);
3364 if (from.length==-1)
3365 addr->reply->from = expand_string(US"$local_part@$domain");
3366 else
3367 addr->reply->from = from.character;
3368 /* Allocation is larger than necessary, but enough even for split MIME words */
3369 buffer_capacity=32+4*subject.length;
3370 buffer=store_get(buffer_capacity);
3371 /* deconst cast safe as we pass in a non-const item */
3372 addr->reply->subject = US parse_quote_2047(subject.character, subject.length, US"utf-8", buffer, buffer_capacity, TRUE);
3373 addr->reply->oncelog = string_from_gstring(once);
3374 addr->reply->once_repeat=days*86400;
3375
3376 /* build body and MIME headers */
3377
3378 if (reason_is_mime)
3379 {
3380 uschar *mime_body,*reason_end;
3381 static const uschar nlnl[]="\r\n\r\n";
3382 gstring * g;
3383
3384 for
3385 (
3386 mime_body = reason.character, reason_end = reason.character + reason.length;
3387 mime_body < (reason_end-(sizeof(nlnl)-1)) && memcmp(mime_body, nlnl, (sizeof(nlnl)-1));
3388 ++mime_body
3389 );
3390
3391 addr->reply->headers = string_copyn(reason.character, mime_body-reason.character);
3392
3393 if (mime_body+(sizeof(nlnl)-1)<reason_end) mime_body+=(sizeof(nlnl)-1);
3394 else mime_body=reason_end-1;
3395 addr->reply->text = string_copyn(mime_body, reason_end-mime_body);
3396 }
3397 else
3398 {
3399 struct String qp = { .character = NULL, .length = 0 }; /* Keep compiler happy (PH) */
3400
3401 addr->reply->headers = US"MIME-Version: 1.0\n"
3402 "Content-Type: text/plain;\n"
3403 "\tcharset=\"utf-8\"\n"
3404 "Content-Transfer-Encoding: quoted-printable";
3405 addr->reply->text = quoted_printable_encode(&reason,&qp)->character;
3406 }
3407 }
3408 }
3409 else if ((filter_test != FTEST_NONE && debug_selector != 0) || (debug_selector & D_filter) != 0)
3410 debug_printf("Sieve: mail was not personal, vacation would ignore it\n");
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}
Unnamed repository; edit this file 'description' to name the repository.