Commit | Line | Data |
---|---|---|
d9898ee8 | 1 | /* |
8d138742 | 2 | ** Copyright 1998 - 2009 Double Precision, Inc. See COPYING for |
d9898ee8 | 3 | ** distribution information. |
4 | */ | |
5 | ||
6 | ||
7 | #include <stdio.h> | |
8 | #include <ctype.h> | |
9 | #include <string.h> | |
10 | #include <stdlib.h> | |
11 | #include <errno.h> | |
12 | ||
13 | #include "rfc822.h" | |
8d138742 | 14 | #include "rfc822hdr.h" |
d9898ee8 | 15 | #include "rfc2047.h" |
8d138742 | 16 | #include "../unicode/unicode.h" |
d9898ee8 | 17 | |
8d138742 CE |
18 | #if LIBIDN |
19 | #include <idna.h> | |
20 | #include <stringprep.h> | |
21 | #endif | |
22 | ||
23 | static const char rcsid[]="$Id: rfc2047u.c,v 1.11 2009/11/22 19:39:52 mrsam Exp $"; | |
24 | ||
25 | static ssize_t rfc822_decode_rfc2047_atom(const char *str, | |
26 | size_t cnt, | |
d9898ee8 | 27 | |
8d138742 CE |
28 | void (*callback)(const char *, |
29 | const char *, | |
30 | const char *, | |
31 | size_t, | |
32 | void *), | |
33 | void *ptr); | |
d9898ee8 | 34 | |
8d138742 CE |
35 | static int rfc2047_decode_unicode(const char *text, |
36 | const struct unicode_info *u, | |
37 | void (*callback)(const char *, size_t, | |
38 | void *), | |
39 | void *ptr); | |
d9898ee8 | 40 | |
41 | struct decode_unicode_s { | |
42 | const struct unicode_info *mychset; | |
d9898ee8 | 43 | |
44 | char *bufptr; | |
45 | size_t bufsize; | |
46 | } ; | |
47 | ||
8d138742 | 48 | static void save_unicode_text(const char *p, size_t l, void *ptr) |
d9898ee8 | 49 | { |
8d138742 CE |
50 | struct decode_unicode_s *s= |
51 | (struct decode_unicode_s *)ptr; | |
52 | ||
d9898ee8 | 53 | if (s->bufptr) |
54 | memcpy(s->bufptr+s->bufsize, p, l); | |
55 | ||
56 | s->bufsize += l; | |
57 | } | |
58 | ||
8d138742 CE |
59 | struct rfc822_display_name_s { |
60 | const struct unicode_info *u; | |
61 | void (*print_func)(const char *, size_t, void *); | |
62 | void *ptr; | |
63 | }; | |
64 | ||
65 | static void unknown_charset(const char *chset, | |
66 | void (*print_func)(const char *, size_t, void *), | |
67 | void *ptr) | |
d9898ee8 | 68 | { |
8d138742 | 69 | static const char unknown[]="[unknown character set: "; |
d9898ee8 | 70 | |
8d138742 CE |
71 | (*print_func)(unknown, sizeof(unknown)-1, ptr); |
72 | (*print_func)(chset, strlen(chset), ptr); | |
73 | (*print_func)("]", 1, ptr); | |
74 | } | |
d9898ee8 | 75 | |
8d138742 CE |
76 | static void rfc822_display_addr_cb(const char *chset, |
77 | const char *lang, | |
78 | const char *content, | |
79 | size_t cnt, | |
80 | void *dummy) | |
81 | { | |
82 | const struct unicode_info *uchset=unicode_find(chset); | |
83 | struct rfc822_display_name_s *s= | |
84 | (struct rfc822_display_name_s *)dummy; | |
85 | char *ptr; | |
86 | char *buf; | |
d9898ee8 | 87 | |
8d138742 | 88 | if (!uchset) |
d9898ee8 | 89 | { |
8d138742 CE |
90 | unknown_charset(chset, s->print_func, s->ptr); |
91 | return; | |
d9898ee8 | 92 | } |
8d138742 CE |
93 | |
94 | buf=malloc(cnt+1); | |
95 | ||
96 | if (!buf) | |
97 | return; | |
98 | ||
99 | memcpy(buf, content, cnt); | |
100 | buf[cnt]=0; | |
101 | ||
102 | ptr=unicode_xconvert(buf, uchset, s->u); | |
103 | free(buf); | |
104 | ||
105 | if (ptr) | |
d9898ee8 | 106 | { |
8d138742 CE |
107 | (*s->print_func)(ptr, strlen(ptr), s->ptr); |
108 | free(ptr); | |
d9898ee8 | 109 | } |
8d138742 CE |
110 | } |
111 | ||
112 | static | |
113 | int rfc822_display_name_int(const struct rfc822a *rfcp, int index, | |
114 | const char *chset, | |
115 | void (*print_func)(const char *, size_t, void *), | |
116 | void *ptr) | |
117 | { | |
118 | struct rfc822_display_name_s s; | |
119 | const struct rfc822addr *addrs; | |
120 | ||
121 | struct rfc822token *i; | |
122 | int prev_isatom=0; | |
123 | int isatom=0; | |
124 | ssize_t rc; | |
125 | ||
126 | if (index < 0 || index >= rfcp->naddrs) return 0; | |
127 | ||
128 | addrs=rfcp->addrs+index; | |
d9898ee8 | 129 | |
8d138742 CE |
130 | if (!addrs->name) |
131 | return rfc822_display_addr(rfcp, index, chset, print_func, ptr); | |
132 | ||
133 | if (chset == NULL) | |
d9898ee8 | 134 | { |
8d138742 | 135 | s.u=NULL; |
d9898ee8 | 136 | } |
8d138742 CE |
137 | else |
138 | { | |
139 | s.u=unicode_find(chset); | |
d9898ee8 | 140 | |
8d138742 CE |
141 | if (!s.u) |
142 | { | |
143 | unknown_charset(chset, print_func, ptr); | |
144 | return (0); | |
145 | } | |
146 | } | |
147 | ||
148 | s.print_func=print_func; | |
149 | s.ptr=ptr; | |
d9898ee8 | 150 | |
8d138742 | 151 | for (i=addrs->name; i; i=i->next, prev_isatom=isatom) |
d9898ee8 | 152 | { |
8d138742 CE |
153 | isatom=rfc822_is_atom(i->token); |
154 | if (isatom && prev_isatom) | |
155 | (*print_func)(" ", 1, ptr); | |
156 | ||
157 | if (i->token == '"' || i->token == '(') | |
d9898ee8 | 158 | { |
8d138742 CE |
159 | size_t l=i->len; |
160 | char *p, *q, *r; | |
161 | ||
162 | if (i->token == '(') | |
163 | { | |
164 | if (l > 2) | |
165 | l -= 2; | |
166 | else | |
167 | l=0; | |
168 | } | |
169 | ||
170 | p=malloc(l+1); | |
171 | ||
172 | if (!p) | |
173 | return -1; | |
174 | ||
175 | if (l) | |
176 | { | |
177 | if (i->token == '(') | |
178 | { | |
179 | memcpy(p, i->ptr+1, l); | |
180 | } | |
181 | else | |
182 | { | |
183 | memcpy(p, i->ptr, l); | |
184 | } | |
185 | } | |
186 | ||
187 | ||
188 | p[l]=0; | |
189 | ||
190 | for (q=r=p; *q; *r++ = *q++) | |
191 | if (*q == '\\' && q[1]) | |
192 | ++q; | |
193 | ||
194 | *r=0; | |
195 | ||
196 | if (chset == NULL) | |
197 | { | |
198 | (*print_func)(p, strlen(p), ptr); | |
199 | } | |
200 | else if (rfc822_display_hdrvalue("subject", | |
201 | p, s.u->chset, | |
202 | print_func, | |
203 | NULL, ptr) < 0) | |
204 | { | |
205 | free(p); | |
206 | return -1; | |
207 | } | |
208 | free(p); | |
209 | continue; | |
210 | } | |
211 | ||
212 | if (i->token) | |
213 | { | |
214 | char c= (char)i->token; | |
215 | ||
216 | (*print_func)(&c, 1, ptr); | |
217 | continue; | |
218 | } | |
219 | ||
220 | rc=chset ? rfc822_decode_rfc2047_atom(i->ptr, i->len, | |
221 | rfc822_display_addr_cb, | |
222 | &s):0; | |
223 | ||
224 | if (rc < 0) | |
225 | return -1; | |
226 | ||
227 | if (rc == 0) | |
228 | { | |
229 | (*print_func)(i->ptr, i->len, ptr); | |
230 | continue; | |
231 | } | |
232 | ||
233 | if (i->next && i->next->token == 0) | |
234 | { | |
235 | rc=rfc822_decode_rfc2047_atom(i->next->ptr, | |
236 | i->next->len, | |
237 | NULL, NULL); | |
238 | ||
239 | if (rc < 0) | |
240 | return -1; | |
241 | ||
242 | if (rc > 0) | |
243 | isatom=0; /* Suppress the separating space */ | |
d9898ee8 | 244 | } |
245 | } | |
8d138742 CE |
246 | return 0; |
247 | } | |
248 | ||
249 | int rfc822_display_name(const struct rfc822a *rfcp, int index, | |
250 | const char *chset, | |
251 | void (*print_func)(const char *, size_t, void *), | |
252 | void *ptr) | |
253 | { | |
254 | const struct rfc822addr *addrs; | |
255 | ||
256 | if (index < 0 || index >= rfcp->naddrs) return 0; | |
257 | ||
258 | addrs=rfcp->addrs+index; | |
d9898ee8 | 259 | |
8d138742 CE |
260 | if (!addrs->tokens) |
261 | return 0; | |
d9898ee8 | 262 | |
8d138742 CE |
263 | return rfc822_display_name_int(rfcp, index, chset, |
264 | print_func, ptr); | |
d9898ee8 | 265 | } |
266 | ||
8d138742 CE |
267 | char *rfc822_display_name_tobuf(const struct rfc822a *rfcp, int index, |
268 | const char *chset) | |
d9898ee8 | 269 | { |
270 | struct decode_unicode_s s; | |
8d138742 | 271 | char *p; |
d9898ee8 | 272 | |
273 | s.bufptr=0; | |
274 | s.bufsize=1; | |
275 | ||
8d138742 CE |
276 | if (rfc822_display_name(rfcp, index, chset, save_unicode_text, &s) < 0) |
277 | return NULL; | |
d9898ee8 | 278 | s.bufptr=p=malloc(s.bufsize); |
8d138742 | 279 | if (!p) |
d9898ee8 | 280 | return (0); |
281 | ||
282 | s.bufsize=0; | |
8d138742 | 283 | if (rfc822_display_name(rfcp, index, chset, save_unicode_text, &s) < 0) |
d9898ee8 | 284 | { |
8d138742 | 285 | free(s.bufptr); |
d9898ee8 | 286 | return (0); |
287 | } | |
8d138742 CE |
288 | save_unicode_text("", 1, &s); |
289 | ||
d9898ee8 | 290 | return (p); |
291 | } | |
292 | ||
8d138742 CE |
293 | int rfc822_display_namelist(const struct rfc822a *rfcp, |
294 | const char *chset, | |
295 | void (*print_func)(const char *, size_t, void *), | |
296 | void *ptr) | |
297 | { | |
298 | int n; | |
299 | ||
300 | for (n=0; n<rfcp->naddrs; n++) | |
301 | { | |
302 | if (rfcp->addrs[n].tokens) | |
303 | { | |
304 | int err=rfc822_display_name(rfcp, n, chset, | |
305 | print_func, ptr); | |
306 | ||
307 | if (err < 0) | |
308 | return err; | |
d9898ee8 | 309 | |
8d138742 CE |
310 | (*print_func)("\n", 1, ptr); |
311 | } | |
312 | } | |
313 | return 0; | |
314 | } | |
315 | ||
316 | int rfc822_display_addr_str(const char *tok, | |
317 | const char *chset, | |
318 | void (*print_func)(const char *, size_t, void *), | |
319 | void *ptr) | |
d9898ee8 | 320 | { |
8d138742 CE |
321 | const char *p; |
322 | const struct unicode_info *uiptr; | |
323 | ||
324 | p=strchr(tok,'@'); | |
d9898ee8 | 325 | |
8d138742 CE |
326 | if (!p) |
327 | p=tok; | |
328 | else | |
329 | ++p; | |
d9898ee8 | 330 | |
8d138742 CE |
331 | if (chset != NULL && (uiptr=unicode_find(chset)) != NULL) |
332 | { | |
333 | int err; | |
334 | char *utf8_ptr; | |
335 | ||
336 | if (p > tok) | |
337 | (*print_func)(tok, p-tok, ptr); | |
338 | ||
339 | #if LIBIDN | |
340 | err=idna_to_unicode_8z8z(p, &utf8_ptr, 0); | |
341 | if (err != IDNA_SUCCESS) | |
342 | utf8_ptr=0; | |
343 | #else | |
344 | utf8_ptr=0; | |
345 | #endif | |
346 | ||
347 | if (utf8_ptr == 0) | |
348 | (*print_func)(p, strlen(p), ptr); | |
349 | else | |
350 | { | |
351 | char *q=unicode_xconvert(utf8_ptr, &unicode_UTF8, | |
352 | uiptr); | |
353 | ||
354 | if (q) | |
355 | { | |
356 | (*print_func)(q, strlen(q), ptr); | |
357 | free(q); | |
358 | } | |
359 | else | |
360 | { | |
361 | (*print_func)(p, strlen(p), ptr); | |
362 | } | |
363 | free(utf8_ptr); | |
364 | } | |
365 | } | |
366 | else | |
367 | { | |
368 | (*print_func)(tok, strlen(tok), ptr); | |
369 | } | |
370 | return 0; | |
d9898ee8 | 371 | } |
372 | ||
8d138742 CE |
373 | int rfc822_display_addr(const struct rfc822a *rfcp, int index, |
374 | const char *chset, | |
375 | void (*print_func)(const char *, size_t, void *), | |
376 | void *ptr) | |
d9898ee8 | 377 | { |
8d138742 CE |
378 | const struct rfc822addr *addrs; |
379 | char *tok; | |
380 | int rc; | |
381 | ||
382 | if (index < 0 || index >= rfcp->naddrs) return 0; | |
383 | ||
384 | addrs=rfcp->addrs+index; | |
385 | ||
386 | if (!addrs->tokens) | |
387 | return 0; | |
388 | ||
389 | tok=rfc822_gettok(addrs->tokens); | |
390 | ||
391 | if (!tok) | |
392 | return 0; | |
393 | ||
394 | rc=rfc822_display_addr_str(tok, chset, print_func, ptr); | |
395 | free(tok); | |
396 | return rc; | |
d9898ee8 | 397 | } |
398 | ||
8d138742 CE |
399 | int rfc2047_print_unicodeaddr(const struct rfc822a *a, |
400 | const char *charset, | |
401 | void (*print_func)(char, void *), | |
402 | void (*print_separator)(const char *, void *), | |
403 | void *ptr) | |
404 | { | |
405 | const char *sep=NULL; | |
406 | int n; | |
407 | const struct unicode_info *charsetu=unicode_find(charset); | |
d9898ee8 | 408 | |
8d138742 CE |
409 | for (n=0; n<a->naddrs; ++n) |
410 | { | |
411 | struct decode_unicode_s nbuf; | |
412 | const struct rfc822addr *addrs; | |
413 | size_t i=0; | |
414 | char *cpbuf; | |
415 | int need_braces=0; | |
416 | ||
417 | addrs=a->addrs+n; | |
418 | ||
419 | nbuf.bufptr=0; | |
420 | nbuf.bufsize=1; | |
421 | ||
422 | if (rfc822_display_name_int(a, n, charset, | |
423 | save_unicode_text, &nbuf) < 0) | |
424 | return -1; | |
425 | ||
426 | nbuf.bufptr=malloc(nbuf.bufsize); | |
427 | nbuf.bufsize=0; | |
428 | if (!nbuf.bufptr) | |
429 | return -1; | |
430 | ||
431 | if (rfc822_display_name_int(a, n, charset, | |
432 | save_unicode_text, &nbuf) < 0) | |
433 | { | |
434 | free(nbuf.bufptr); | |
435 | return -1; | |
436 | } | |
437 | nbuf.bufptr[nbuf.bufsize]=0; | |
438 | ||
439 | if (addrs->tokens == 0) | |
440 | { | |
441 | size_t i; | |
442 | ||
443 | if (nbuf.bufsize == 1) /* ; */ | |
444 | sep=0; | |
445 | ||
446 | if (sep) | |
447 | (*print_separator)(sep, ptr); | |
448 | ||
449 | for (i=0; i<nbuf.bufsize; ++i) | |
450 | (*print_func)(nbuf.bufptr[i], ptr); | |
451 | free(nbuf.bufptr); | |
452 | if (nbuf.bufsize > 1) | |
453 | (*print_separator)(" ", ptr); | |
454 | sep=NULL; | |
455 | continue; | |
456 | } | |
457 | if (sep) | |
458 | (*print_separator)(sep, ptr); | |
459 | ||
460 | if (!addrs->name) | |
461 | { | |
462 | nbuf.bufsize=0; | |
463 | nbuf.bufptr[0]=0; | |
464 | } | |
465 | ||
466 | for (i=0; i<nbuf.bufsize; i++) | |
467 | if (strchr(RFC822_SPECIALS, nbuf.bufptr[i])) | |
468 | break; | |
469 | ||
470 | if (!charsetu) | |
471 | { | |
472 | const char *errmsg="\"(unknown character set)\""; | |
473 | ||
474 | while (*errmsg) | |
475 | (*print_func)(*errmsg++, ptr); | |
476 | need_braces=1; | |
477 | } | |
478 | else | |
479 | { | |
480 | cpbuf=unicode_xconvert(nbuf.bufptr, &unicode_UTF8, | |
481 | charsetu); | |
482 | ||
483 | if (!cpbuf) | |
484 | { | |
485 | free(nbuf.bufptr); | |
486 | return -1; | |
487 | } | |
488 | ||
489 | if (i < nbuf.bufsize) | |
490 | { | |
491 | (*print_func)('"', ptr); | |
492 | ||
493 | for (i=0; cpbuf[i]; ++i) | |
494 | { | |
495 | if (cpbuf[i] == '\\' || | |
496 | cpbuf[i] == '"') | |
497 | (*print_func)('\\', ptr); | |
498 | (*print_func)(cpbuf[i], ptr); | |
499 | } | |
500 | (*print_func)('"', ptr); | |
501 | need_braces=1; | |
502 | } | |
503 | else | |
504 | { | |
505 | for (i=0; cpbuf[i]; ++i) | |
506 | { | |
507 | need_braces=1; | |
508 | (*print_func)(cpbuf[i], ptr); | |
509 | } | |
510 | } | |
511 | ||
512 | free(cpbuf); | |
513 | } | |
514 | free(nbuf.bufptr); | |
515 | ||
516 | if (need_braces) | |
517 | { | |
518 | (*print_func)(' ', ptr); | |
519 | (*print_func)('<', ptr); | |
520 | } | |
521 | ||
522 | nbuf.bufptr=0; | |
523 | nbuf.bufsize=1; | |
524 | ||
525 | if (rfc822_display_addr(a, n, charset, | |
526 | save_unicode_text, &nbuf) < 0) | |
527 | return -1; | |
528 | ||
529 | nbuf.bufptr=malloc(nbuf.bufsize); | |
530 | nbuf.bufsize=0; | |
531 | if (!nbuf.bufptr) | |
532 | return -1; | |
533 | ||
534 | if (rfc822_display_addr(a, n, charset, | |
535 | save_unicode_text, &nbuf) < 0) | |
536 | { | |
537 | free(nbuf.bufptr); | |
538 | return -1; | |
539 | } | |
540 | for (i=0; i<nbuf.bufsize; i++) | |
541 | (*print_func)(nbuf.bufptr[i], ptr); | |
542 | ||
543 | free(nbuf.bufptr); | |
544 | ||
545 | if (need_braces) | |
546 | (*print_func)('>', ptr); | |
547 | sep=", "; | |
548 | } | |
549 | ||
550 | return 0; | |
551 | } | |
552 | ||
553 | static int rfc2047_print_unicode_addrstr(const char *addrheader, | |
554 | const char *charset, | |
555 | void (*print_func)(char, void *), | |
556 | void (*print_separator)(const char *, void *), | |
557 | void (*err_func)(const char *, int, void *), | |
558 | void *ptr) | |
559 | { | |
560 | struct rfc822t *t; | |
561 | struct rfc822a *a; | |
562 | int rc; | |
563 | ||
564 | t=rfc822t_alloc_new(addrheader, err_func, ptr); | |
565 | ||
566 | if (!t) | |
567 | return -1; | |
568 | ||
569 | a=rfc822a_alloc(t); | |
570 | ||
571 | if (!a) | |
572 | { | |
573 | rfc822t_free(t); | |
574 | return -1; | |
575 | } | |
576 | rc=rfc2047_print_unicodeaddr(a, charset, print_func, print_separator, | |
577 | ptr); | |
578 | rfc822a_free(a); | |
579 | rfc822t_free(t); | |
580 | return (rc); | |
581 | } | |
582 | ||
583 | struct rfc822_display_hdrvalue_s { | |
584 | ||
585 | const struct unicode_info *u; | |
586 | void (*display_func)(const char *, size_t, void *); | |
587 | void *ptr; | |
588 | }; | |
589 | ||
590 | static void rfc822_display_hdrvalue_print_func(char c, void *ptr) | |
591 | { | |
592 | struct rfc822_display_hdrvalue_s *s= | |
593 | (struct rfc822_display_hdrvalue_s *)ptr; | |
594 | ||
595 | (*s->display_func)(&c, 1, s->ptr); | |
596 | } | |
597 | ||
598 | static void rfc822_display_hdrvalue_print_separator(const char *cp, void *ptr) | |
599 | { | |
600 | struct rfc822_display_hdrvalue_s *s= | |
601 | (struct rfc822_display_hdrvalue_s *)ptr; | |
602 | ||
603 | (*s->display_func)(cp, strlen(cp), s->ptr); | |
604 | (*s->display_func)("", 0, s->ptr); /* Signal wrap point */ | |
605 | } | |
606 | ||
607 | int rfc822_display_hdrvalue(const char *hdrname, | |
608 | const char *hdrvalue, | |
609 | const char *charset, | |
610 | void (*display_func)(const char *, size_t, | |
611 | void *), | |
612 | void (*err_func)(const char *, int, void *), | |
613 | void *ptr) | |
614 | { | |
615 | struct rfc822_display_hdrvalue_s s; | |
616 | ||
617 | s.display_func=display_func; | |
618 | s.ptr=ptr; | |
619 | ||
620 | if (rfc822hdr_is_addr(hdrname)) | |
621 | { | |
622 | return rfc2047_print_unicode_addrstr(hdrvalue, | |
623 | charset, | |
624 | rfc822_display_hdrvalue_print_func, | |
625 | rfc822_display_hdrvalue_print_separator, | |
626 | NULL, | |
627 | &s); | |
628 | } | |
629 | ||
630 | s.u=unicode_find(charset); | |
631 | ||
632 | if (!s.u) | |
633 | { | |
634 | unknown_charset(charset, display_func, ptr); | |
635 | return (0); | |
636 | } | |
637 | ||
638 | return rfc2047_decode_unicode(hdrvalue, s.u, display_func, ptr); | |
639 | } | |
640 | ||
641 | struct rfc822_display_hdrvalue_tobuf_s { | |
642 | void (*orig_err_func)(const char *, int, void *); | |
643 | void *orig_ptr; | |
644 | ||
645 | size_t cnt; | |
646 | char *buf; | |
647 | }; | |
648 | ||
649 | static void rfc822_display_hdrvalue_tobuf_cnt(const char *ptr, size_t cnt, | |
650 | void *s) | |
651 | { | |
652 | ((struct rfc822_display_hdrvalue_tobuf_s *)s)->cnt += cnt; | |
653 | } | |
654 | ||
655 | static void rfc822_display_hdrvalue_tobuf_save(const char *ptr, size_t cnt, | |
656 | void *s) | |
657 | { | |
658 | if (cnt) | |
659 | memcpy(((struct rfc822_display_hdrvalue_tobuf_s *)s)->buf, | |
660 | ptr, cnt); | |
661 | ||
662 | ((struct rfc822_display_hdrvalue_tobuf_s *)s)->buf += cnt; | |
663 | } | |
664 | ||
665 | static void rfc822_display_hdrvalue_tobuf_errfunc(const char *ptr, int index, | |
666 | void *s) | |
667 | { | |
668 | void (*f)(const char *, int, void *)= | |
669 | ((struct rfc822_display_hdrvalue_tobuf_s *)s)->orig_err_func; | |
670 | ||
671 | if (f) | |
672 | f(ptr, index, | |
673 | ((struct rfc822_display_hdrvalue_tobuf_s *)s)->orig_ptr); | |
674 | } | |
675 | ||
676 | char *rfc822_display_addr_tobuf(const struct rfc822a *rfcp, int index, | |
677 | const char *chset) | |
678 | { | |
679 | struct rfc822_display_hdrvalue_tobuf_s nbuf; | |
680 | int errcode; | |
681 | char *ptr; | |
682 | ||
683 | nbuf.buf=0; | |
684 | nbuf.cnt=1; | |
685 | ||
686 | errcode=rfc822_display_addr(rfcp, index, chset, | |
687 | rfc822_display_hdrvalue_tobuf_cnt, &nbuf); | |
688 | ||
689 | if (errcode < 0) | |
690 | return NULL; | |
691 | ||
692 | ptr=nbuf.buf=malloc(nbuf.cnt); | |
693 | nbuf.cnt=0; | |
694 | if (!ptr) | |
695 | return NULL; | |
696 | ||
697 | errcode=rfc822_display_addr(rfcp, index, chset, | |
698 | rfc822_display_hdrvalue_tobuf_save, &nbuf); | |
699 | ||
700 | if (errcode < 0) | |
701 | { | |
702 | free(nbuf.buf); | |
703 | return NULL; | |
704 | } | |
705 | *nbuf.buf=0; | |
706 | return ptr; | |
707 | } | |
708 | ||
709 | char *rfc822_display_hdrvalue_tobuf(const char *hdrname, | |
710 | const char *hdrvalue, | |
711 | const char *charset, | |
712 | void (*err_func)(const char *, int, | |
713 | void *), | |
714 | void *ptr) | |
715 | { | |
716 | struct rfc822_display_hdrvalue_tobuf_s s; | |
717 | int errcode; | |
718 | char *bufptr; | |
719 | ||
720 | s.orig_err_func=err_func; | |
721 | s.orig_ptr=ptr; | |
722 | s.cnt=1; | |
723 | ||
724 | errcode=rfc822_display_hdrvalue(hdrname, hdrvalue, charset, | |
725 | rfc822_display_hdrvalue_tobuf_cnt, | |
726 | rfc822_display_hdrvalue_tobuf_errfunc, | |
727 | &s); | |
728 | ||
729 | if (errcode < 0) | |
730 | return NULL; | |
731 | ||
732 | bufptr=s.buf=malloc(s.cnt); | |
733 | ||
734 | if (!bufptr) | |
735 | return NULL; | |
736 | ||
737 | errcode=rfc822_display_hdrvalue(hdrname, hdrvalue, charset, | |
738 | rfc822_display_hdrvalue_tobuf_save, | |
739 | rfc822_display_hdrvalue_tobuf_errfunc, | |
740 | &s); | |
741 | if (errcode) | |
742 | { | |
743 | free(bufptr); | |
744 | return NULL; | |
745 | } | |
746 | *s.buf=0; | |
747 | return bufptr; | |
748 | } | |
749 | ||
750 | char *rfc822_display_addr_str_tobuf(const char *tok, const char *chset) | |
751 | { | |
752 | struct rfc822_display_hdrvalue_tobuf_s s; | |
753 | int errcode; | |
754 | char *bufptr; | |
755 | ||
756 | s.cnt=1; | |
757 | ||
758 | errcode=rfc822_display_addr_str(tok, chset, | |
759 | rfc822_display_hdrvalue_tobuf_cnt, | |
760 | &s); | |
761 | ||
762 | if (errcode < 0) | |
763 | return NULL; | |
764 | ||
765 | bufptr=s.buf=malloc(s.cnt); | |
766 | ||
767 | if (!bufptr) | |
768 | return NULL; | |
769 | ||
770 | errcode=rfc822_display_addr_str(tok, chset, | |
771 | rfc822_display_hdrvalue_tobuf_save, | |
772 | &s); | |
773 | if (errcode < 0) | |
774 | { | |
775 | free(bufptr); | |
776 | return NULL; | |
777 | } | |
778 | *s.buf=0; | |
779 | return bufptr; | |
780 | } | |
781 | ||
782 | ||
783 | static const char xdigit[]="0123456789ABCDEFabcdef"; | |
784 | ||
785 | static const unsigned char decode64tab[]={ | |
786 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
787 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
788 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 62, 0, 0, 0, 63, | |
789 | 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 0, 0, 0, 99, 0, 0, | |
790 | 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, | |
791 | 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 0, 0, 0, 0, 0, | |
792 | 0, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, | |
793 | 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 0, 0, 0, 0, 0, | |
794 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
795 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
796 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
797 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
798 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
799 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
800 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
801 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 | |
802 | }; | |
803 | ||
804 | static int nyb(int c) | |
805 | { | |
806 | const char *p; | |
807 | int n; | |
808 | ||
809 | p=strchr(xdigit, c); | |
810 | ||
811 | if (!p) | |
812 | return 0; | |
813 | ||
814 | n=p-xdigit; | |
815 | ||
816 | if (n > 15) | |
817 | n -= 6; | |
818 | ||
819 | return n; | |
820 | } | |
821 | ||
822 | static size_t decodebase64(const char *ptr, size_t cnt, | |
823 | char *dec_buf) | |
824 | { | |
825 | size_t i, j; | |
826 | char a,b,c; | |
827 | size_t k; | |
828 | ||
829 | i=cnt / 4; | |
830 | i=i*4; | |
831 | k=0; | |
832 | for (j=0; j<i; j += 4) | |
833 | { | |
834 | int w=decode64tab[(int)(unsigned char)ptr[j]]; | |
835 | int x=decode64tab[(int)(unsigned char)ptr[j+1]]; | |
836 | int y=decode64tab[(int)(unsigned char)ptr[j+2]]; | |
837 | int z=decode64tab[(int)(unsigned char)ptr[j+3]]; | |
838 | ||
839 | a= (w << 2) | (x >> 4); | |
840 | b= (x << 4) | (y >> 2); | |
841 | c= (y << 6) | z; | |
842 | dec_buf[k++]=a; | |
843 | if ( ptr[j+2] != '=') | |
844 | dec_buf[k++]=b; | |
845 | if ( ptr[j+3] != '=') | |
846 | dec_buf[k++]=c; | |
847 | } | |
848 | return (k); | |
849 | } | |
850 | ||
851 | ||
852 | static ssize_t rfc822_decode_rfc2047_atom(const char *str, | |
853 | size_t cnt, | |
854 | ||
855 | void (*callback)(const char *, | |
856 | const char *, | |
857 | const char *, | |
858 | size_t, | |
859 | void *), | |
860 | void *ptr) | |
861 | { | |
862 | const char *chset_str; | |
863 | const char *enc_str; | |
864 | const char *content_str; | |
865 | ||
866 | char *chset; | |
867 | char *lang; | |
868 | ||
869 | char *content; | |
870 | ||
871 | size_t i; | |
872 | size_t j; | |
873 | size_t k; | |
874 | ||
875 | size_t content_len; | |
876 | ||
877 | if (cnt < 2 || str[0] != '=' || str[1] != '?') | |
878 | return 0; | |
879 | ||
880 | chset_str=str+2; | |
881 | ||
882 | for (i=2; i<cnt; i++) | |
883 | if (str[i] == '?') | |
884 | break; | |
885 | ||
886 | if (i >= cnt) | |
887 | return 0; | |
888 | ||
889 | enc_str= str + ++i; | |
890 | ||
891 | for (; i < cnt; i++) | |
892 | if (str[i] == '?') | |
893 | break; | |
894 | ||
895 | if (i >= cnt) | |
896 | return 0; | |
897 | ||
898 | content_str= str + ++i; | |
899 | ||
900 | while (1) | |
901 | { | |
902 | if (cnt-i < 2) | |
903 | return 0; | |
904 | ||
905 | if (str[i] == '?' && str[i+1] == '=') | |
906 | break; | |
907 | ++i; | |
908 | } | |
909 | ||
910 | for (j=0; chset_str[j] != '?'; ++j) | |
911 | ; | |
912 | ||
913 | chset=malloc(j+1); | |
914 | ||
915 | if (!chset) | |
916 | return -1; | |
917 | ||
918 | memcpy(chset, chset_str, j); | |
919 | chset[j]=0; | |
920 | ||
921 | lang=strchr(chset, '*'); /* RFC 2231 */ | |
922 | ||
923 | if (lang) | |
924 | *lang++ = 0; | |
925 | else | |
926 | lang=""; | |
927 | ||
928 | content_len=str + i - content_str; | |
929 | ||
930 | content=malloc(content_len+1); | |
931 | ||
932 | if (!content) | |
933 | { | |
934 | free(chset); | |
935 | return -1; | |
936 | } | |
937 | ||
938 | switch (*enc_str) { | |
939 | case 'q': | |
940 | case 'Q': | |
941 | ||
942 | k=0; | |
943 | for (j=0; j<content_len; j++) | |
944 | { | |
945 | char c; | |
946 | ||
947 | if (content_str[j] == '=' && i-j >= 3) | |
948 | { | |
949 | content[k]=(char)(nyb(content_str[j+1])*16 + | |
950 | nyb(content_str[j+2])); | |
951 | ++k; | |
952 | j += 2; | |
953 | continue; | |
954 | } | |
955 | ||
956 | c=content_str[j]; | |
957 | if (c == '_') | |
958 | c=' '; | |
959 | content[k]=c; | |
960 | ++k; | |
961 | } | |
962 | break; | |
963 | ||
964 | case 'b': | |
965 | case 'B': | |
966 | k=decodebase64(content_str, content_len, content); | |
967 | break; | |
968 | default: | |
969 | free(content); | |
970 | free(chset); | |
971 | return (0); | |
972 | } | |
973 | ||
974 | if (callback) | |
975 | (*callback)(chset, lang, content, k, ptr); | |
976 | free(content); | |
977 | free(chset); | |
978 | return i + 2; | |
979 | } | |
980 | ||
981 | int rfc2047_decoder(const char *text, | |
982 | void (*callback)(const char *chset, | |
983 | const char *lang, | |
984 | const char *content, | |
985 | size_t cnt, | |
986 | void *dummy), | |
987 | void *ptr) | |
988 | { | |
989 | ssize_t rc; | |
990 | ||
991 | while (text && *text) | |
992 | { | |
993 | size_t i; | |
994 | ||
995 | for (i=0; text[i]; i++) | |
996 | { | |
997 | if (text[i] == '=' && text[i+1] == '?') | |
998 | break; | |
999 | } | |
1000 | ||
1001 | if (i) | |
1002 | (*callback)(unicode_ISO8859_1.chset, "", text, i, ptr); | |
1003 | ||
1004 | text += i; | |
1005 | ||
1006 | if (!*text) | |
1007 | continue; | |
1008 | ||
1009 | rc=rfc822_decode_rfc2047_atom(text, strlen(text), | |
1010 | callback, ptr); | |
1011 | ||
1012 | if (rc < 0) | |
1013 | return -1; | |
1014 | ||
1015 | if (rc == 0) | |
1016 | { | |
1017 | (*callback)(unicode_ISO8859_1.chset, "", text, 2, ptr); | |
1018 | text += 2; | |
1019 | continue; | |
1020 | } | |
1021 | ||
1022 | text += rc; | |
1023 | ||
1024 | for (i=0; text[i]; i++) | |
1025 | { | |
1026 | if (strchr(" \t\r\n", text[i]) == NULL) | |
1027 | break; | |
1028 | } | |
1029 | ||
1030 | if (text[i] != '=' || text[i+1] != '?') | |
1031 | continue; | |
1032 | ||
1033 | rc=rfc822_decode_rfc2047_atom(text+i, strlen(text+i), NULL, | |
1034 | NULL); | |
1035 | ||
1036 | if (rc < 0) | |
1037 | return -1; | |
1038 | if (rc > 0) | |
1039 | text += i; | |
1040 | } | |
1041 | ||
1042 | return 0; | |
1043 | } | |
1044 | ||
1045 | static int rfc2047_decode_unicode(const char *text, | |
1046 | const struct unicode_info *u, | |
1047 | void (*callback)(const char *, size_t, | |
1048 | void *), | |
1049 | void *ptr) | |
1050 | { | |
1051 | struct rfc822_display_name_s s; | |
1052 | ||
1053 | s.u=u; | |
1054 | s.print_func=callback; | |
1055 | s.ptr=ptr; | |
1056 | ||
1057 | return rfc2047_decoder(text, rfc822_display_addr_cb, &s); | |
1058 | } |