NeoMutt  2024-04-25-89-g194907
Teaching an old dog new tricks
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header.c
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1
31#include "config.h"
32#include <stdbool.h>
33#include <stdlib.h>
34#include <string.h>
35#include "mutt/lib.h"
36#include "address/lib.h"
37#include "config/lib.h"
38#include "email/lib.h"
39#include "gui/lib.h"
40#include "header.h"
41#include "globals.h"
42#ifdef USE_AUTOCRYPT
43#include "autocrypt/lib.h"
44#endif
45
51static const char *const UserhdrsOverrideHeaders[] = {
52 "content-type:",
53 "user-agent:",
54};
55
60{
63};
64
69{
72};
73
84static int print_val(FILE *fp, const char *pfx, const char *value,
85 CopyHeaderFlags chflags, size_t col)
86{
87 while (value && (value[0] != '\0'))
88 {
89 if (fputc(*value, fp) == EOF)
90 return -1;
91 /* corner-case: break words longer than 998 chars by force,
92 * mandated by RFC5322 */
93 if (!(chflags & CH_DISPLAY) && (++col >= 998))
94 {
95 if (fputs("\n ", fp) < 0)
96 return -1;
97 col = 1;
98 }
99 if (*value == '\n')
100 {
101 if ((value[1] != '\0') && pfx && (pfx[0] != '\0') && (fputs(pfx, fp) == EOF))
102 return -1;
103 /* for display, turn folding spaces into folding tabs */
104 if ((chflags & CH_DISPLAY) && ((value[1] == ' ') || (value[1] == '\t')))
105 {
106 value++;
107 while ((value[0] != '\0') && ((value[0] == ' ') || (value[0] == '\t')))
108 value++;
109 if (fputc('\t', fp) == EOF)
110 return -1;
111 continue;
112 }
113 }
114 value++;
115 }
116 return 0;
117}
118
131static int fold_one_header(FILE *fp, const char *tag, const char *value, size_t vlen,
132 const char *pfx, int wraplen, CopyHeaderFlags chflags)
133{
134 if (!value || (*value == '\0') || !vlen)
135 return 0;
136
137 const char *p = value;
138 char buf[8192] = { 0 };
139 int first = 1, col = 0, l = 0;
140 const bool display = (chflags & CH_DISPLAY);
141
142 mutt_debug(LL_DEBUG5, "pfx=[%s], tag=[%s], flags=%d value=[%.*s]\n", pfx, tag,
143 chflags, (int) ((value[vlen - 1] == '\n') ? vlen - 1 : vlen), value);
144
145 if (tag && *tag && (fprintf(fp, "%s%s: ", NONULL(pfx), tag) < 0))
146 return -1;
147 col = mutt_str_len(tag) + ((tag && (tag[0] != '\0')) ? 2 : 0) + mutt_str_len(pfx);
148
149 while (p && (p[0] != '\0'))
150 {
151 int fold = 0;
152
153 /* find the next word and place it in 'buf'. it may start with
154 * whitespace we can fold before */
155 const char *next = mutt_str_find_word(p);
156 l = MIN(sizeof(buf) - 1, next - p);
157 memcpy(buf, p, l);
158 buf[l] = '\0';
159
160 /* determine width: character cells for display, bytes for sending
161 * (we get pure ascii only) */
162 const int w = mutt_mb_width(buf, col, display);
163 const int enc = mutt_str_startswith(buf, "=?");
164
165 mutt_debug(LL_DEBUG5, "word=[%s], col=%d, w=%d, next=[0x0%x]\n",
166 (buf[0] == '\n' ? "\\n" : buf), col, w, *next);
167
168 /* insert a folding \n before the current word's lwsp except for
169 * header name, first word on a line (word longer than wrap width)
170 * and encoded words */
171 if (!first && !enc && col && ((col + w) >= wraplen))
172 {
173 col = mutt_str_len(pfx);
174 fold = 1;
175 if (fprintf(fp, "\n%s", NONULL(pfx)) <= 0)
176 return -1;
177 }
178
179 /* print the actual word; for display, ignore leading ws for word
180 * and fold with tab for readability */
181 if (display && fold)
182 {
183 char *pc = buf;
184 while ((pc[0] != '\0') && ((pc[0] == ' ') || (pc[0] == '\t')))
185 {
186 pc++;
187 col--;
188 }
189 if (fputc('\t', fp) == EOF)
190 return -1;
191 if (print_val(fp, pfx, pc, chflags, col) < 0)
192 return -1;
193 col += 8;
194 }
195 else if (print_val(fp, pfx, buf, chflags, col) < 0)
196 {
197 return -1;
198 }
199 col += w;
200
201 /* if the current word ends in \n, ignore all its trailing spaces
202 * and reset column; this prevents us from putting only spaces (or
203 * even none) on a line if the trailing spaces are located at our
204 * current line width
205 * XXX this covers ASCII space only, for display we probably
206 * want something like iswspace() here */
207 const char *sp = next;
208 while ((sp[0] != '\0') && ((sp[0] == ' ') || (sp[0] == '\t')))
209 sp++;
210 if (sp[0] == '\n')
211 {
212 if (sp[1] == '\0')
213 break;
214 next = sp;
215 col = 0;
216 }
217
218 p = next;
219 first = 0;
220 }
221
222 /* if we have printed something but didn't \n-terminate it, do it
223 * except the last word we printed ended in \n already */
224 if (col && ((l == 0) || (buf[l - 1] != '\n')))
225 if (putc('\n', fp) == EOF)
226 return -1;
227
228 return 0;
229}
230
238static char *unfold_header(char *s)
239{
240 char *p = s;
241 char *q = s;
242
243 while (p && (p[0] != '\0'))
244 {
245 /* remove CRLF prior to FWSP, turn \t into ' ' */
246 if ((p[0] == '\r') && (p[1] == '\n') && ((p[2] == ' ') || (p[2] == '\t')))
247 {
248 *q++ = ' ';
249 p += 3;
250 continue;
251 }
252 else if ((p[0] == '\n') && ((p[1] == ' ') || (p[1] == '\t')))
253 {
254 /* remove LF prior to FWSP, turn \t into ' ' */
255 *q++ = ' ';
256 p += 2;
257 continue;
258 }
259 *q++ = *p++;
260 }
261 if (q)
262 q[0] = '\0';
263
264 return s;
265}
266
275static int userhdrs_override_cmp(const void *a, const void *b)
276{
277 const char *ca = a;
278 const char *cb = *(const char **) b;
279 return mutt_istrn_cmp(ca, cb, strlen(cb));
280}
281
295static int write_one_header(FILE *fp, int pfxw, int max, int wraplen, const char *pfx,
296 const char *start, const char *end, CopyHeaderFlags chflags)
297{
298 const char *t = strchr(start, ':');
299 if (!t || (t >= end))
300 {
301 mutt_debug(LL_DEBUG1, "#2 warning: header not in 'key: value' format!\n");
302 return 0;
303 }
304
305 const size_t vallen = end - start;
306 const bool short_enough = (pfxw + max <= wraplen);
307
308 mutt_debug((short_enough ? LL_DEBUG2 : LL_DEBUG5), "buf[%s%.*s] %s, max width = %d %s %d\n",
309 NONULL(pfx), (int) (vallen - 1) /* skip newline */, start,
310 (short_enough ? "short enough" : "too long"), max,
311 (short_enough ? "<=" : ">"), wraplen);
312
313 int rc = 0;
314 const char *valbuf = NULL, *tagbuf = NULL;
315 const bool is_from = (vallen > 5) && mutt_istr_startswith(start, "from ");
316
317 /* only pass through folding machinery if necessary for sending,
318 * never wrap From_ headers on sending */
319 if (!(chflags & CH_DISPLAY) && (short_enough || is_from))
320 {
321 if (pfx && *pfx)
322 {
323 if (fputs(pfx, fp) == EOF)
324 {
325 return -1;
326 }
327 }
328
329 valbuf = mutt_strn_dup(start, end - start);
330 rc = print_val(fp, pfx, valbuf, chflags, mutt_str_len(pfx));
331 }
332 else
333 {
334 if (!is_from)
335 {
336 tagbuf = mutt_strn_dup(start, t - start);
337 /* skip over the colon separating the header field name and value */
338 t++;
339
340 /* skip over any leading whitespace (WSP, as defined in RFC5322)
341 * NOTE: mutt_str_skip_email_wsp() does the wrong thing here.
342 * See tickets 3609 and 3716. */
343 while ((*t == ' ') || (*t == '\t'))
344 t++;
345 }
346 const char *s = is_from ? start : t;
347 valbuf = mutt_strn_dup(s, end - s);
348 rc = fold_one_header(fp, tagbuf, valbuf, end - s, pfx, wraplen, chflags);
349 }
350
351 FREE(&tagbuf);
352 FREE(&valbuf);
353 return rc;
354}
355
364static struct UserHdrsOverride write_userhdrs(FILE *fp, const struct ListHead *userhdrs,
365 bool privacy, struct ConfigSubset *sub)
366{
367 struct UserHdrsOverride overrides = { { 0 } };
368
369 struct ListNode *tmp = NULL;
370 STAILQ_FOREACH(tmp, userhdrs, entries)
371 {
372 char *const colon = strchr(NONULL(tmp->data), ':');
373 if (!colon)
374 {
375 continue;
376 }
377
378 const char *const value = mutt_str_skip_email_wsp(colon + 1);
379 if (*value == '\0')
380 {
381 continue; /* don't emit empty fields. */
382 }
383
384 /* check whether the current user-header is an override */
385 size_t cur_override = ICONV_ILLEGAL_SEQ;
386 const char *const *idx = bsearch(tmp->data, UserhdrsOverrideHeaders,
388 sizeof(char *), userhdrs_override_cmp);
389 if (idx)
390 {
391 cur_override = idx - UserhdrsOverrideHeaders;
392 overrides.is_overridden[cur_override] = true;
393 }
394
395 if (privacy && (cur_override == USERHDRS_OVERRIDE_USER_AGENT))
396 {
397 continue;
398 }
399
400 *colon = '\0';
401 mutt_write_one_header(fp, tmp->data, value, NULL, 0, CH_NO_FLAGS, sub);
402 *colon = ':';
403 }
404
405 return overrides;
406}
407
423int mutt_write_one_header(FILE *fp, const char *tag, const char *value,
424 const char *pfx, int wraplen, CopyHeaderFlags chflags,
425 struct ConfigSubset *sub)
426{
427 char *last = NULL, *line = NULL;
428 int max = 0, w, rc = -1;
429 int pfxw = mutt_strwidth(pfx);
430 char *v = mutt_str_dup(value);
431 bool display = (chflags & CH_DISPLAY);
432
433 const bool c_weed = cs_subset_bool(sub, "weed");
434 if (!display || c_weed)
435 v = unfold_header(v);
436
437 /* when not displaying, use sane wrap value */
438 if (!display)
439 {
440 const short c_wrap_headers = cs_subset_number(sub, "wrap_headers");
441 if ((c_wrap_headers < 78) || (c_wrap_headers > 998))
442 wraplen = 78;
443 else
444 wraplen = c_wrap_headers;
445 }
446 else if (wraplen <= 0)
447 {
448 wraplen = 78;
449 }
450
451 const size_t vlen = mutt_str_len(v);
452 if (tag)
453 {
454 /* if header is short enough, simply print it */
455 if (!display && (mutt_strwidth(tag) + 2 + pfxw + mutt_strnwidth(v, vlen) <= wraplen))
456 {
457 mutt_debug(LL_DEBUG5, "buf[%s%s: %s] is short enough\n", NONULL(pfx), tag, v);
458 if (fprintf(fp, "%s%s: %s\n", NONULL(pfx), tag, v) <= 0)
459 goto out;
460 rc = 0;
461 goto out;
462 }
463 else
464 {
465 rc = fold_one_header(fp, tag, v, vlen, pfx, wraplen, chflags);
466 goto out;
467 }
468 }
469
470 char *p = v;
471 last = v;
472 line = v;
473 while (p && *p)
474 {
475 p = strchr(p, '\n');
476
477 /* find maximum line width in current header */
478 if (p)
479 *p = '\0';
480 w = mutt_mb_width(line, 0, display);
481 if (w > max)
482 max = w;
483 if (p)
484 *p = '\n';
485
486 if (!p)
487 break;
488
489 line = ++p;
490 if ((*p != ' ') && (*p != '\t'))
491 {
492 if (write_one_header(fp, pfxw, max, wraplen, pfx, last, p, chflags) < 0)
493 goto out;
494 last = p;
495 max = 0;
496 }
497 }
498
499 if (last && *last)
500 if (write_one_header(fp, pfxw, max, wraplen, pfx, last, p, chflags) < 0)
501 goto out;
502
503 rc = 0;
504
505out:
506 FREE(&v);
507 return rc;
508}
509
519void mutt_write_references(const struct ListHead *r, FILE *fp, size_t trim)
520{
521 struct ListNode *np = NULL;
522 size_t length = 0;
523
524 STAILQ_FOREACH(np, r, entries)
525 {
526 if (++length == trim)
527 break;
528 }
529
530 struct ListNode **ref = mutt_mem_calloc(length, sizeof(struct ListNode *));
531
532 // store in reverse order
533 size_t tmp = length;
534 STAILQ_FOREACH(np, r, entries)
535 {
536 ref[--tmp] = np;
537 if (tmp == 0)
538 break;
539 }
540
541 for (size_t i = 0; i < length; i++)
542 {
543 fputc(' ', fp);
544 fputs(ref[i]->data, fp);
545 if (i != length - 1)
546 fputc('\n', fp);
547 }
548
549 FREE(&ref);
550}
551
577int mutt_rfc822_write_header(FILE *fp, struct Envelope *env, struct Body *b,
578 enum MuttWriteHeaderMode mode, bool privacy,
579 bool hide_protected_subject, struct ConfigSubset *sub)
580{
581 if (((mode == MUTT_WRITE_HEADER_NORMAL) || (mode == MUTT_WRITE_HEADER_FCC) ||
582 (mode == MUTT_WRITE_HEADER_POSTPONE)) &&
583 !privacy)
584 {
585 struct Buffer *date = buf_pool_get();
586 mutt_date_make_date(date, cs_subset_bool(sub, "local_date_header"));
587 fprintf(fp, "Date: %s\n", buf_string(date));
588 buf_pool_release(&date);
589 }
590
591 /* UseFrom is not consulted here so that we can still write a From:
592 * field if the user sets it with the 'my_hdr' command */
593 if (!TAILQ_EMPTY(&env->from) && !privacy)
594 {
595 mutt_addrlist_write_file(&env->from, fp, "From");
596 }
597
598 if (!TAILQ_EMPTY(&env->sender) && !privacy)
599 {
600 mutt_addrlist_write_file(&env->sender, fp, "Sender");
601 }
602
603 if (!TAILQ_EMPTY(&env->to))
604 {
605 mutt_addrlist_write_file(&env->to, fp, "To");
606 }
607 else if (mode == MUTT_WRITE_HEADER_EDITHDRS)
608 {
609 if (!OptNewsSend)
610 fputs("To:\n", fp);
611 }
612
613 if (!TAILQ_EMPTY(&env->cc))
614 {
615 mutt_addrlist_write_file(&env->cc, fp, "Cc");
616 }
617 else if (mode == MUTT_WRITE_HEADER_EDITHDRS)
618 {
619 if (!OptNewsSend)
620 fputs("Cc:\n", fp);
621 }
622
623 if (!TAILQ_EMPTY(&env->bcc))
624 {
625 const bool c_write_bcc = cs_subset_bool(sub, "write_bcc");
626
627 if ((mode == MUTT_WRITE_HEADER_POSTPONE) ||
628 (mode == MUTT_WRITE_HEADER_EDITHDRS) || (mode == MUTT_WRITE_HEADER_FCC) ||
629 ((mode == MUTT_WRITE_HEADER_NORMAL) && c_write_bcc))
630 {
631 mutt_addrlist_write_file(&env->bcc, fp, "Bcc");
632 }
633 }
634 else if (mode == MUTT_WRITE_HEADER_EDITHDRS)
635 {
636 if (!OptNewsSend)
637 fputs("Bcc:\n", fp);
638 }
639
640 if (env->newsgroups)
641 fprintf(fp, "Newsgroups: %s\n", env->newsgroups);
642 else if ((mode == MUTT_WRITE_HEADER_EDITHDRS) && OptNewsSend)
643 fputs("Newsgroups:\n", fp);
644
645 if (env->followup_to)
646 fprintf(fp, "Followup-To: %s\n", env->followup_to);
647 else if ((mode == MUTT_WRITE_HEADER_EDITHDRS) && OptNewsSend)
648 fputs("Followup-To:\n", fp);
649
650 const bool c_x_comment_to = cs_subset_bool(sub, "x_comment_to");
651 if (env->x_comment_to)
652 fprintf(fp, "X-Comment-To: %s\n", env->x_comment_to);
653 else if ((mode == MUTT_WRITE_HEADER_EDITHDRS) && OptNewsSend && c_x_comment_to)
654 fputs("X-Comment-To:\n", fp);
655
656 if (env->subject)
657 {
658 if (hide_protected_subject &&
659 ((mode == MUTT_WRITE_HEADER_NORMAL) || (mode == MUTT_WRITE_HEADER_FCC) ||
661 {
662 const char *const c_crypt_protected_headers_subject = cs_subset_string(sub, "crypt_protected_headers_subject");
663 mutt_write_one_header(fp, "Subject", c_crypt_protected_headers_subject,
664 NULL, 0, CH_NO_FLAGS, sub);
665 }
666 else
667 {
668 mutt_write_one_header(fp, "Subject", env->subject, NULL, 0, CH_NO_FLAGS, sub);
669 }
670 }
671 else if (mode == MUTT_WRITE_HEADER_EDITHDRS)
672 {
673 fputs("Subject:\n", fp);
674 }
675
676 /* save message id if the user has set it */
677 if (env->message_id && !privacy)
678 fprintf(fp, "Message-ID: %s\n", env->message_id);
679
680 if (!TAILQ_EMPTY(&env->reply_to))
681 {
682 mutt_addrlist_write_file(&env->reply_to, fp, "Reply-To");
683 }
684 else if (mode == MUTT_WRITE_HEADER_EDITHDRS)
685 {
686 fputs("Reply-To:\n", fp);
687 }
688
689 if (!TAILQ_EMPTY(&env->mail_followup_to))
690 {
691 if (!OptNewsSend)
692 {
693 mutt_addrlist_write_file(&env->mail_followup_to, fp, "Mail-Followup-To");
694 }
695 }
696
697 /* Add any user defined headers */
698 struct UserHdrsOverride userhdrs_overrides = write_userhdrs(fp, &env->userhdrs,
699 privacy, sub);
700
701 if ((mode == MUTT_WRITE_HEADER_NORMAL) || (mode == MUTT_WRITE_HEADER_FCC) ||
703 {
704 if (!STAILQ_EMPTY(&env->references))
705 {
706 fputs("References:", fp);
707 mutt_write_references(&env->references, fp, 10);
708 fputc('\n', fp);
709 }
710
711 /* Add the MIME headers */
712 if (!userhdrs_overrides.is_overridden[USERHDRS_OVERRIDE_CONTENT_TYPE])
713 {
714 fputs("MIME-Version: 1.0\n", fp);
715 mutt_write_mime_header(b, fp, sub);
716 }
717 }
718
719 if (!STAILQ_EMPTY(&env->in_reply_to))
720 {
721 fputs("In-Reply-To:", fp);
723 fputc('\n', fp);
724 }
725
726#ifdef USE_AUTOCRYPT
727 const bool c_autocrypt = cs_subset_bool(sub, "autocrypt");
728 if (c_autocrypt)
729 {
730 if (mode == MUTT_WRITE_HEADER_NORMAL || mode == MUTT_WRITE_HEADER_FCC)
732 if (mode == MUTT_WRITE_HEADER_MIME)
734 }
735#endif
736
737 const bool c_user_agent = cs_subset_bool(sub, "user_agent");
738 if (((mode == MUTT_WRITE_HEADER_NORMAL) || (mode == MUTT_WRITE_HEADER_FCC)) && !privacy &&
739 c_user_agent && !userhdrs_overrides.is_overridden[USERHDRS_OVERRIDE_USER_AGENT])
740 {
741 /* Add a vanity header */
742 fprintf(fp, "User-Agent: NeoMutt/%s%s\n", PACKAGE_VERSION, GitVer);
743 }
744
745 return (ferror(fp) == 0) ? 0 : -1;
746}
747
756int mutt_write_mime_header(struct Body *b, FILE *fp, struct ConfigSubset *sub)
757{
758 if (!b || !fp)
759 return -1;
760
761 int len;
762 int tmplen;
763 char buf[256] = { 0 };
764
765 char *id = NULL;
766
767 fprintf(fp, "Content-Type: %s/%s", TYPE(b), b->subtype);
768
769 if (!TAILQ_EMPTY(&b->parameter))
770 {
771 len = 25 + mutt_str_len(b->subtype); /* approximate len. of content-type */
772
773 struct Parameter *np = NULL;
774 TAILQ_FOREACH(np, &b->parameter, entries)
775 {
776 if (!np->attribute || !np->value)
777 continue;
778
779 struct ParameterList pl_conts = TAILQ_HEAD_INITIALIZER(pl_conts);
780 rfc2231_encode_string(&pl_conts, np->attribute, np->value);
781 struct Parameter *cont = NULL;
782 TAILQ_FOREACH(cont, &pl_conts, entries)
783 {
784 if (mutt_istr_equal(cont->attribute, "content-id"))
785 {
786 // Content-ID: gets its own header
787 mutt_str_replace(&id, cont->value);
788 break;
789 }
790
791 fputc(';', fp);
792
793 buf[0] = 0;
794 mutt_addr_cat(buf, sizeof(buf), cont->value, MimeSpecials);
795
796 /* Dirty hack to make messages readable by Outlook Express
797 * for the Mac: force quotes around the boundary parameter
798 * even when they aren't needed. */
799 if (mutt_istr_equal(cont->attribute, "boundary") && mutt_str_equal(buf, cont->value))
800 snprintf(buf, sizeof(buf), "\"%s\"", cont->value);
801
802 tmplen = mutt_str_len(buf) + mutt_str_len(cont->attribute) + 1;
803 if ((len + tmplen + 2) > 76)
804 {
805 fputs("\n\t", fp);
806 len = tmplen + 1;
807 }
808 else
809 {
810 fputc(' ', fp);
811 len += tmplen + 1;
812 }
813
814 fprintf(fp, "%s=%s", cont->attribute, buf);
815 }
816
817 mutt_param_free(&pl_conts);
818 }
819 }
820
821 fputc('\n', fp);
822
823 if (id)
824 {
825 fprintf(fp, "Content-ID: <%s>\n", id);
826 mutt_mem_free(&id);
827 }
828
829 if (b->language)
830 fprintf(fp, "Content-Language: %s\n", b->language);
831
832 if (b->description)
833 fprintf(fp, "Content-Description: %s\n", b->description);
834
835 if (b->disposition != DISP_NONE)
836 {
837 const char *dispstr[] = { "inline", "attachment", "form-data" };
838
839 if (b->disposition < sizeof(dispstr) / sizeof(char *))
840 {
841 fprintf(fp, "Content-Disposition: %s", dispstr[b->disposition]);
842 len = 21 + mutt_str_len(dispstr[b->disposition]);
843
844 if (b->use_disp && ((b->disposition != DISP_INLINE) || b->d_filename))
845 {
846 char *fn = b->d_filename;
847 if (!fn)
848 fn = b->filename;
849
850 if (fn)
851 {
852 /* Strip off the leading path... */
853 char *t = strrchr(fn, '/');
854 if (t)
855 t++;
856 else
857 t = fn;
858
859 struct ParameterList pl_conts = TAILQ_HEAD_INITIALIZER(pl_conts);
860 rfc2231_encode_string(&pl_conts, "filename", t);
861 struct Parameter *cont = NULL;
862 TAILQ_FOREACH(cont, &pl_conts, entries)
863 {
864 fputc(';', fp);
865 buf[0] = 0;
866 mutt_addr_cat(buf, sizeof(buf), cont->value, MimeSpecials);
867
868 tmplen = mutt_str_len(buf) + mutt_str_len(cont->attribute) + 1;
869 if ((len + tmplen + 2) > 76)
870 {
871 fputs("\n\t", fp);
872 len = tmplen + 1;
873 }
874 else
875 {
876 fputc(' ', fp);
877 len += tmplen + 1;
878 }
879
880 fprintf(fp, "%s=%s", cont->attribute, buf);
881 }
882
883 mutt_param_free(&pl_conts);
884 }
885 }
886
887 fputc('\n', fp);
888 }
889 else
890 {
891 mutt_debug(LL_DEBUG1, "ERROR: invalid content-disposition %d\n", b->disposition);
892 }
893 }
894
895 if (b->encoding != ENC_7BIT)
896 fprintf(fp, "Content-Transfer-Encoding: %s\n", ENCODING(b->encoding));
897
898 const bool c_crypt_protected_headers_write = cs_subset_bool(sub, "crypt_protected_headers_write");
899 bool c_autocrypt = false;
900#ifdef USE_AUTOCRYPT
901 c_autocrypt = cs_subset_bool(sub, "autocrypt");
902#endif
903
904 if ((c_crypt_protected_headers_write || c_autocrypt) && b->mime_headers)
905 {
907 false, false, sub);
908 }
909
910 /* Do NOT add the terminator here!!! */
911 return ferror(fp) ? -1 : 0;
912}
void mutt_addr_cat(char *buf, size_t buflen, const char *value, const char *specials)
Copy a string and wrap it in quotes if it contains special characters.
Definition: address.c:708
void mutt_addrlist_write_file(const struct AddressList *al, FILE *fp, const char *header)
Wrapper for mutt_write_address()
Definition: address.c:1248
Email Address Handling.
Autocrypt end-to-end encryption.
int mutt_autocrypt_write_gossip_headers(struct Envelope *env, FILE *fp)
Write the Autocrypt gossip headers to a file.
Definition: autocrypt.c:803
int mutt_autocrypt_write_autocrypt_header(struct Envelope *env, FILE *fp)
Write the Autocrypt header to a file.
Definition: autocrypt.c:765
static const char * buf_string(const struct Buffer *buf)
Convert a buffer to a const char * "string".
Definition: buffer.h:96
const char * cs_subset_string(const struct ConfigSubset *sub, const char *name)
Get a string config item by name.
Definition: helpers.c:291
short cs_subset_number(const struct ConfigSubset *sub, const char *name)
Get a number config item by name.
Definition: helpers.c:143
bool cs_subset_bool(const struct ConfigSubset *sub, const char *name)
Get a boolean config item by name.
Definition: helpers.c:47
Convenience wrapper for the config headers.
#define CH_DISPLAY
Display result to user.
Definition: copy.h:72
uint32_t CopyHeaderFlags
Flags for mutt_copy_header(), e.g. CH_UPDATE.
Definition: copy.h:52
#define CH_NO_FLAGS
No flags are set.
Definition: copy.h:53
size_t mutt_strnwidth(const char *s, size_t n)
Measure a string's width in screen cells.
Definition: curs_lib.c:456
size_t mutt_strwidth(const char *s)
Measure a string's width in screen cells.
Definition: curs_lib.c:443
Structs that make up an email.
bool is_from(const char *s, char *path, size_t pathlen, time_t *tp)
Is a string a 'From' header line?
Definition: from.c:49
bool OptNewsSend
(pseudo) used to change behavior when posting
Definition: globals.c:71
const char * GitVer
#define mutt_debug(LEVEL,...)
Definition: logging2.h:89
Convenience wrapper for the gui headers.
int mutt_rfc822_write_header(FILE *fp, struct Envelope *env, struct Body *b, enum MuttWriteHeaderMode mode, bool privacy, bool hide_protected_subject, struct ConfigSubset *sub)
Write out one RFC822 header line.
Definition: header.c:577
static int fold_one_header(FILE *fp, const char *tag, const char *value, size_t vlen, const char *pfx, int wraplen, CopyHeaderFlags chflags)
Fold one header line.
Definition: header.c:131
static const char *const UserhdrsOverrideHeaders[]
The next array/enum pair is used to to keep track of user headers that override pre-defined headers N...
Definition: header.c:51
static int userhdrs_override_cmp(const void *a, const void *b)
Compare a user-defined header with an element of the UserhdrsOverrideHeaders list.
Definition: header.c:275
static int write_one_header(FILE *fp, int pfxw, int max, int wraplen, const char *pfx, const char *start, const char *end, CopyHeaderFlags chflags)
Write out one header line.
Definition: header.c:295
static char * unfold_header(char *s)
Unfold a wrapped email header.
Definition: header.c:238
static struct UserHdrsOverride write_userhdrs(FILE *fp, const struct ListHead *userhdrs, bool privacy, struct ConfigSubset *sub)
Write user-defined headers and keep track of the interesting ones.
Definition: header.c:364
static int print_val(FILE *fp, const char *pfx, const char *value, CopyHeaderFlags chflags, size_t col)
Add pieces to an email header, wrapping where necessary.
Definition: header.c:84
UserHdrsOverrideIdx
Headers that the user may override.
Definition: header.c:60
@ USERHDRS_OVERRIDE_CONTENT_TYPE
Override the "Content-Type".
Definition: header.c:61
@ USERHDRS_OVERRIDE_USER_AGENT
Override the "User-Agent".
Definition: header.c:62
int mutt_write_mime_header(struct Body *b, FILE *fp, struct ConfigSubset *sub)
Create a MIME header.
Definition: header.c:756
void mutt_write_references(const struct ListHead *r, FILE *fp, size_t trim)
Add the message references to a list.
Definition: header.c:519
int mutt_write_one_header(FILE *fp, const char *tag, const char *value, const char *pfx, int wraplen, CopyHeaderFlags chflags, struct ConfigSubset *sub)
Write one header line to a file.
Definition: header.c:423
Convenience wrapper for the send headers.
MuttWriteHeaderMode
Modes for mutt_rfc822_write_header()
Definition: header.h:39
@ MUTT_WRITE_HEADER_FCC
fcc mode, like normal mode but for Bcc header
Definition: header.h:41
@ MUTT_WRITE_HEADER_MIME
Write protected headers.
Definition: header.h:44
@ MUTT_WRITE_HEADER_NORMAL
A normal Email, write full header + MIME headers.
Definition: header.h:40
@ MUTT_WRITE_HEADER_POSTPONE
A postponed Email, just the envelope info.
Definition: header.h:42
@ MUTT_WRITE_HEADER_EDITHDRS
"light" mode (used for edit_hdrs)
Definition: header.h:43
@ LL_DEBUG5
Log at debug level 5.
Definition: logging2.h:47
@ LL_DEBUG2
Log at debug level 2.
Definition: logging2.h:44
@ LL_DEBUG1
Log at debug level 1.
Definition: logging2.h:43
int mutt_mb_width(const char *str, int col, bool indent)
Measure a string's display width (in screen columns)
Definition: mbyte.c:137
void * mutt_mem_calloc(size_t nmemb, size_t size)
Allocate zeroed memory on the heap.
Definition: memory.c:51
void mutt_mem_free(void *ptr)
Release memory allocated on the heap.
Definition: memory.c:69
#define FREE(x)
Definition: memory.h:45
#define MIN(a, b)
Definition: memory.h:32
#define mutt_array_size(x)
Definition: memory.h:38
const char MimeSpecials[]
Characters that need special treatment in MIME.
Definition: mime.c:67
@ ENC_7BIT
7-bit text
Definition: mime.h:49
@ DISP_INLINE
Content is inline.
Definition: mime.h:62
@ DISP_NONE
No preferred disposition.
Definition: mime.h:65
#define ENCODING(x)
Definition: mime.h:92
#define TYPE(body)
Definition: mime.h:89
#define ICONV_ILLEGAL_SEQ
Error value for iconv() - Illegal sequence.
Definition: charset.h:105
void mutt_date_make_date(struct Buffer *buf, bool local)
Write a date in RFC822 format to a buffer.
Definition: date.c:397
Convenience wrapper for the library headers.
char * mutt_strn_dup(const char *begin, size_t len)
Duplicate a sub-string.
Definition: string.c:380
int mutt_istrn_cmp(const char *a, const char *b, size_t num)
Compare two strings ignoring case (to a maximum), safely.
Definition: string.c:439
bool mutt_istr_equal(const char *a, const char *b)
Compare two strings, ignoring case.
Definition: string.c:672
char * mutt_str_dup(const char *str)
Copy a string, safely.
Definition: string.c:253
char * mutt_str_skip_email_wsp(const char *s)
Skip over whitespace as defined by RFC5322.
Definition: string.c:608
bool mutt_str_equal(const char *a, const char *b)
Compare two strings.
Definition: string.c:660
const char * mutt_str_find_word(const char *src)
Find the end of a word (non-space)
Definition: string.c:706
size_t mutt_str_startswith(const char *str, const char *prefix)
Check whether a string starts with a prefix.
Definition: string.c:230
size_t mutt_str_len(const char *a)
Calculate the length of a string, safely.
Definition: string.c:496
size_t mutt_istr_startswith(const char *str, const char *prefix)
Check whether a string starts with a prefix, ignoring case.
Definition: string.c:242
char * mutt_str_replace(char **p, const char *s)
Replace one string with another.
Definition: string.c:280
void mutt_param_free(struct ParameterList *pl)
Free a ParameterList.
Definition: parameter.c:62
struct Buffer * buf_pool_get(void)
Get a Buffer from the pool.
Definition: pool.c:81
void buf_pool_release(struct Buffer **ptr)
Return a Buffer to the pool.
Definition: pool.c:94
#define TAILQ_FOREACH(var, head, field)
Definition: queue.h:725
#define STAILQ_FOREACH(var, head, field)
Definition: queue.h:352
#define STAILQ_EMPTY(head)
Definition: queue.h:348
#define TAILQ_HEAD_INITIALIZER(head)
Definition: queue.h:637
#define TAILQ_EMPTY(head)
Definition: queue.h:721
size_t rfc2231_encode_string(struct ParameterList *head, const char *attribute, char *value)
Encode a string to be suitable for an RFC2231 header.
Definition: rfc2231.c:355
#define NONULL(x)
Definition: string2.h:37
The body of an email.
Definition: body.h:36
char * language
content-language (RFC8255)
Definition: body.h:77
char * d_filename
filename to be used for the content-disposition header If NULL, filename is used instead.
Definition: body.h:56
struct Envelope * mime_headers
Memory hole protected headers.
Definition: body.h:75
struct ParameterList parameter
Parameters of the content-type.
Definition: body.h:62
bool use_disp
Content-Disposition uses filename= ?
Definition: body.h:47
char * description
content-description
Definition: body.h:55
unsigned int disposition
content-disposition, ContentDisposition
Definition: body.h:42
char * subtype
content-type subtype
Definition: body.h:60
unsigned int encoding
content-transfer-encoding, ContentEncoding
Definition: body.h:41
char * filename
When sending a message, this is the file to which this structure refers.
Definition: body.h:58
String manipulation buffer.
Definition: buffer.h:36
A set of inherited config items.
Definition: subset.h:47
The header of an Email.
Definition: envelope.h:57
struct ListHead userhdrs
user defined headers
Definition: envelope.h:85
char *const subject
Email's subject.
Definition: envelope.h:70
struct AddressList to
Email's 'To' list.
Definition: envelope.h:60
char * followup_to
List of 'followup-to' fields.
Definition: envelope.h:80
struct AddressList reply_to
Email's 'reply-to'.
Definition: envelope.h:64
char * message_id
Message ID.
Definition: envelope.h:73
char * x_comment_to
List of 'X-comment-to' fields.
Definition: envelope.h:81
char * newsgroups
List of newsgroups.
Definition: envelope.h:78
struct AddressList mail_followup_to
Email's 'mail-followup-to'.
Definition: envelope.h:65
struct AddressList cc
Email's 'Cc' list.
Definition: envelope.h:61
struct AddressList sender
Email's sender.
Definition: envelope.h:63
struct ListHead references
message references (in reverse order)
Definition: envelope.h:83
struct ListHead in_reply_to
in-reply-to header content
Definition: envelope.h:84
struct AddressList bcc
Email's 'Bcc' list.
Definition: envelope.h:62
struct AddressList from
Email's 'From' list.
Definition: envelope.h:59
A List node for strings.
Definition: list.h:37
char * data
String.
Definition: list.h:38
Attribute associated with a MIME part.
Definition: parameter.h:33
char * attribute
Parameter name.
Definition: parameter.h:34
char * value
Parameter value.
Definition: parameter.h:35
Which headers have been overridden.
Definition: header.c:69
bool is_overridden[mutt_array_size(UserhdrsOverrideHeaders)]
Which email headers have been overridden.
Definition: header.c:71