NeoMutt  2022-04-29-247-gc6aae8
Teaching an old dog new tricks
DOXYGEN
crypt.c
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1
35#include "config.h"
36#include <locale.h>
37#include <stdbool.h>
38#include <stdio.h>
39#include <string.h>
40#include "mutt/lib.h"
41#include "address/lib.h"
42#include "config/lib.h"
43#include "email/lib.h"
44#include "core/lib.h"
45#include "alias/lib.h"
46#include "gui/lib.h"
47#include "mutt.h"
48#include "crypt.h"
49#include "lib.h"
50#include "attach/lib.h"
51#include "question/lib.h"
52#include "send/lib.h"
53#include "copy.h"
54#include "cryptglue.h"
55#include "handler.h"
56#include "muttlib.h"
57#include "mx.h"
58#include "options.h"
59#ifdef USE_AUTOCRYPT
60#include "autocrypt/lib.h"
61#endif
62
70void crypt_current_time(struct State *s, const char *app_name)
71{
72 char p[256], tmp[256];
73
74 if (!WithCrypto)
75 return;
76
77 const bool c_crypt_timestamp = cs_subset_bool(NeoMutt->sub, "crypt_timestamp");
78 if (c_crypt_timestamp)
79 {
80 mutt_date_localtime_format(p, sizeof(p), _(" (current time: %c)"), MUTT_DATE_NOW);
81 }
82 else
83 *p = '\0';
84
85 snprintf(tmp, sizeof(tmp), _("[-- %s output follows%s --]\n"), NONULL(app_name), p);
86 state_attach_puts(s, tmp);
87}
88
93{
96
99
100 if (WithCrypto)
101 {
102 /* L10N: Due to the implementation details (e.g. some passwords are managed
103 by gpg-agent) we can't know whether we forgot zero, 1, 12, ...
104 passwords. So in English we use "Passphrases". Your language might
105 have other means to express this. */
106 mutt_message(_("Passphrases forgotten"));
107 }
108}
109
110#ifndef DEBUG
111#include <sys/resource.h>
115static void disable_coredumps(void)
116{
117 struct rlimit rl = { 0, 0 };
118 static bool done = false;
119
120 if (!done)
121 {
122 setrlimit(RLIMIT_CORE, &rl);
123 done = true;
124 }
125}
126#endif
127
135{
136 bool rc = false;
137
138#ifndef DEBUG
139 disable_coredumps();
140#endif
141
142 if (((WithCrypto & APPLICATION_PGP) != 0) && (flags & APPLICATION_PGP))
144
145 if (((WithCrypto & APPLICATION_SMIME) != 0) && (flags & APPLICATION_SMIME))
147
148 return rc;
149}
150
159int mutt_protect(struct Email *e, char *keylist, bool postpone)
160{
161 struct Body *pbody = NULL, *tmp_pbody = NULL;
162 struct Body *tmp_smime_pbody = NULL;
163 struct Body *tmp_pgp_pbody = NULL;
164 bool has_retainable_sig = false;
165
166 if (!WithCrypto)
167 return -1;
168
169 SecurityFlags security = e->security;
170 int sign = security & (SEC_AUTOCRYPT | SEC_SIGN);
171 if (postpone)
172 {
173 sign = SEC_NO_FLAGS;
174 security &= ~SEC_SIGN;
175 }
176
177 if (!(security & (SEC_ENCRYPT | SEC_AUTOCRYPT)) && !sign)
178 return 0;
179
180 if (sign && !(security & SEC_AUTOCRYPT) && !crypt_valid_passphrase(security))
181 return -1;
182
183 if (((WithCrypto & APPLICATION_PGP) != 0) && !(security & SEC_AUTOCRYPT) &&
184 ((security & PGP_INLINE) == PGP_INLINE))
185 {
186 const enum QuadOption c_pgp_mime_auto = cs_subset_quad(NeoMutt->sub, "pgp_mime_auto");
187 if ((e->body->type != TYPE_TEXT) || !mutt_istr_equal(e->body->subtype, "plain"))
188 {
189 if (query_quadoption(c_pgp_mime_auto, _("Inline PGP can't be used with attachments. Revert to PGP/MIME?")) !=
190 MUTT_YES)
191 {
192 mutt_error(_("Mail not sent: inline PGP can't be used with attachments"));
193 return -1;
194 }
195 }
196 else if (mutt_istr_equal("flowed", mutt_param_get(&e->body->parameter, "format")))
197 {
198 if ((query_quadoption(c_pgp_mime_auto, _("Inline PGP can't be used with format=flowed. Revert to PGP/MIME?"))) !=
199 MUTT_YES)
200 {
201 mutt_error(_("Mail not sent: inline PGP can't be used with format=flowed"));
202 return -1;
203 }
204 }
205 else
206 {
207 /* they really want to send it inline... go for it */
208 if (!isendwin())
209 {
210 mutt_endwin();
211 puts(_("Invoking PGP..."));
212 }
213 pbody = crypt_pgp_traditional_encryptsign(e->body, security, keylist);
214 if (pbody)
215 {
216 e->body = pbody;
217 return 0;
218 }
219
220 /* otherwise inline won't work...ask for revert */
221 if (query_quadoption(c_pgp_mime_auto,
222 _("Message can't be sent inline. Revert to using PGP/MIME?")) != MUTT_YES)
223 {
224 mutt_error(_("Mail not sent"));
225 return -1;
226 }
227 }
228
229 /* go ahead with PGP/MIME */
230 }
231
232 if (!isendwin())
233 mutt_endwin();
234
236 tmp_smime_pbody = e->body;
238 tmp_pgp_pbody = e->body;
239
240#ifdef CRYPT_BACKEND_GPGME
241 const bool c_crypt_use_pka = cs_subset_bool(NeoMutt->sub, "crypt_use_pka");
242 if (sign && c_crypt_use_pka)
243#else
244 if (sign)
245#endif
246 {
247 /* Set sender (necessary for e.g. PKA). */
248 const char *mailbox = NULL;
249 struct Address *from = TAILQ_FIRST(&e->env->from);
250 bool free_from = false;
251
252 if (!from)
253 {
254 free_from = true;
256 }
257
258 mailbox = from->mailbox;
259 const struct Address *c_envelope_from_address = cs_subset_address(NeoMutt->sub, "envelope_from_address");
260 if (!mailbox && c_envelope_from_address)
261 mailbox = c_envelope_from_address->mailbox;
262
263 if (((WithCrypto & APPLICATION_SMIME) != 0) && (security & APPLICATION_SMIME))
265 else if (((WithCrypto & APPLICATION_PGP) != 0) && (security & APPLICATION_PGP))
267
268 if (free_from)
269 mutt_addr_free(&from);
270 }
271
272 const bool c_crypt_protected_headers_write = cs_subset_bool(NeoMutt->sub, "crypt_protected_headers_write");
273 if (c_crypt_protected_headers_write)
274 {
275 struct Envelope *protected_headers = mutt_env_new();
276 mutt_str_replace(&protected_headers->subject, e->env->subject);
277 /* Note: if other headers get added, such as to, cc, then a call to
278 * mutt_env_to_intl() will need to be added here too. */
279 mutt_prepare_envelope(protected_headers, 0, NeoMutt->sub);
280
282 e->body->mime_headers = protected_headers;
283 mutt_param_set(&e->body->parameter, "protected-headers", "v1");
284 }
285
286#ifdef USE_AUTOCRYPT
287 /* A note about e->body->mime_headers. If postpone or send
288 * fails, the mime_headers is cleared out before returning to the
289 * compose menu. So despite the "robustness" code above and in the
290 * gen_gossip_list function below, mime_headers will not be set when
291 * entering mutt_protect().
292 *
293 * This is important to note because the user could toggle
294 * $crypt_protected_headers_write or $autocrypt off back in the
295 * compose menu. We don't want mutt_write_rfc822_header() to write
296 * stale data from one option if the other is set.
297 */
298 const bool c_autocrypt = cs_subset_bool(NeoMutt->sub, "autocrypt");
299 if (c_autocrypt && !postpone && (security & SEC_AUTOCRYPT))
300 {
302 }
303#endif
304
305 if (sign)
306 {
307 if (((WithCrypto & APPLICATION_SMIME) != 0) && (security & APPLICATION_SMIME))
308 {
309 tmp_pbody = crypt_smime_sign_message(e->body, &e->env->from);
310 if (!tmp_pbody)
311 goto bail;
312 pbody = tmp_pbody;
313 tmp_smime_pbody = tmp_pbody;
314 }
315
316 const bool c_pgp_retainable_sigs = cs_subset_bool(NeoMutt->sub, "pgp_retainable_sigs");
317 if (((WithCrypto & APPLICATION_PGP) != 0) && (security & APPLICATION_PGP) &&
318 (!(security & (SEC_ENCRYPT | SEC_AUTOCRYPT)) || c_pgp_retainable_sigs))
319 {
320 tmp_pbody = crypt_pgp_sign_message(e->body, &e->env->from);
321 if (!tmp_pbody)
322 goto bail;
323
324 has_retainable_sig = true;
325 sign = SEC_NO_FLAGS;
326 pbody = tmp_pbody;
327 tmp_pgp_pbody = tmp_pbody;
328 }
329
330 if ((WithCrypto != 0) && (security & APPLICATION_SMIME) && (security & APPLICATION_PGP))
331 {
332 /* here comes the draft ;-) */
333 }
334 }
335
336 if (security & (SEC_ENCRYPT | SEC_AUTOCRYPT))
337 {
338 if (((WithCrypto & APPLICATION_SMIME) != 0) && (security & APPLICATION_SMIME))
339 {
340 tmp_pbody = crypt_smime_build_smime_entity(tmp_smime_pbody, keylist);
341 if (!tmp_pbody)
342 {
343 /* signed ? free it! */
344 goto bail;
345 }
346 /* free tmp_body if messages was signed AND encrypted ... */
347 if ((tmp_smime_pbody != e->body) && (tmp_smime_pbody != tmp_pbody))
348 {
349 /* detach and don't delete e->body,
350 * which tmp_smime_pbody->parts after signing. */
351 tmp_smime_pbody->parts = tmp_smime_pbody->parts->next;
352 e->body->next = NULL;
353 mutt_body_free(&tmp_smime_pbody);
354 }
355 pbody = tmp_pbody;
356 }
357
358 if (((WithCrypto & APPLICATION_PGP) != 0) && (security & APPLICATION_PGP))
359 {
360 pbody = crypt_pgp_encrypt_message(e, tmp_pgp_pbody, keylist, sign, &e->env->from);
361 if (!pbody)
362 {
363 /* did we perform a retainable signature? */
364 if (has_retainable_sig)
365 {
366 /* remove the outer multipart layer */
367 tmp_pgp_pbody = mutt_remove_multipart(tmp_pgp_pbody);
368 /* get rid of the signature */
369 mutt_body_free(&tmp_pgp_pbody->next);
370 }
371
372 goto bail;
373 }
374
375 // destroy temporary signature envelope when doing retainable signatures.
376 if (has_retainable_sig)
377 {
378 tmp_pgp_pbody = mutt_remove_multipart(tmp_pgp_pbody);
379 mutt_body_free(&tmp_pgp_pbody->next);
380 }
381 }
382 }
383
384 if (pbody)
385 {
386 e->body = pbody;
387 return 0;
388 }
389
390bail:
392 mutt_param_delete(&e->body->parameter, "protected-headers");
393 return -1;
394}
395
403{
404 if (!b || (b->type != TYPE_MULTIPART) || !b->subtype || !mutt_istr_equal(b->subtype, "signed"))
405 {
406 return SEC_NO_FLAGS;
407 }
408
409 char *p = mutt_param_get(&b->parameter, "protocol");
410 if (!p)
411 return SEC_NO_FLAGS;
412
413 if (mutt_istr_equal(p, "multipart/mixed"))
414 return SEC_SIGN;
415
416 if (((WithCrypto & APPLICATION_PGP) != 0) && mutt_istr_equal(p, "application/pgp-signature"))
417 {
418 return PGP_SIGN;
419 }
420
421 if (((WithCrypto & APPLICATION_SMIME) != 0) && mutt_istr_equal(p, "application/x-pkcs7-signature"))
422 {
423 return SMIME_SIGN;
424 }
425 if (((WithCrypto & APPLICATION_SMIME) != 0) && mutt_istr_equal(p, "application/pkcs7-signature"))
426 {
427 return SMIME_SIGN;
428 }
429
430 return SEC_NO_FLAGS;
431}
432
440{
441 if ((WithCrypto & APPLICATION_PGP) == 0)
442 return SEC_NO_FLAGS;
443
444 char *p = NULL;
445
446 if (!b || (b->type != TYPE_MULTIPART) || !b->subtype ||
447 !mutt_istr_equal(b->subtype, "encrypted") ||
448 !(p = mutt_param_get(&b->parameter, "protocol")) ||
449 !mutt_istr_equal(p, "application/pgp-encrypted"))
450 {
451 return SEC_NO_FLAGS;
452 }
453
454 return PGP_ENCRYPT;
455}
456
464{
466 return 0;
467
468 b = b->parts;
469 if (!b || (b->type != TYPE_APPLICATION) || !b->subtype ||
470 !mutt_istr_equal(b->subtype, "pgp-encrypted"))
471 {
472 return 0;
473 }
474
475 b = b->next;
476 if (!b || (b->type != TYPE_APPLICATION) || !b->subtype ||
477 !mutt_istr_equal(b->subtype, "octet-stream"))
478 {
479 return 0;
480 }
481
482 return PGP_ENCRYPT;
483}
484
501{
503 return SEC_NO_FLAGS;
504
505 if (!b || (b->type != TYPE_MULTIPART) || !b->subtype || !mutt_istr_equal(b->subtype, "mixed"))
506 {
507 return SEC_NO_FLAGS;
508 }
509
510 b = b->parts;
511 if (!b || (b->type != TYPE_TEXT) || !b->subtype ||
512 !mutt_istr_equal(b->subtype, "plain") || (b->length != 0))
513 {
514 return SEC_NO_FLAGS;
515 }
516
517 b = b->next;
518 if (!b || (b->type != TYPE_APPLICATION) || !b->subtype ||
519 !mutt_istr_equal(b->subtype, "pgp-encrypted"))
520 {
521 return SEC_NO_FLAGS;
522 }
523
524 b = b->next;
525 if (!b || (b->type != TYPE_APPLICATION) || !b->subtype ||
526 !mutt_istr_equal(b->subtype, "octet-stream"))
527 {
528 return SEC_NO_FLAGS;
529 }
530
531 b = b->next;
532 if (b)
533 return SEC_NO_FLAGS;
534
535 return PGP_ENCRYPT;
536}
537
545{
547 char *p = NULL;
548
549 if (b->type == TYPE_APPLICATION)
550 {
551 if (mutt_istr_equal(b->subtype, "pgp") || mutt_istr_equal(b->subtype, "x-pgp-message"))
552 {
553 p = mutt_param_get(&b->parameter, "x-action");
554 if (p && (mutt_istr_equal(p, "sign") || mutt_istr_equal(p, "signclear")))
555 {
556 t |= PGP_SIGN;
557 }
558
559 p = mutt_param_get(&b->parameter, "format");
560 if (p && mutt_istr_equal(p, "keys-only"))
561 {
562 t |= PGP_KEY;
563 }
564
565 if (t == SEC_NO_FLAGS)
566 t |= PGP_ENCRYPT; /* not necessarily correct, but... */
567 }
568
569 if (mutt_istr_equal(b->subtype, "pgp-signed"))
570 t |= PGP_SIGN;
571
572 if (mutt_istr_equal(b->subtype, "pgp-keys"))
573 t |= PGP_KEY;
574 }
575 else if ((b->type == TYPE_TEXT) && mutt_istr_equal("plain", b->subtype))
576 {
577 if (((p = mutt_param_get(&b->parameter, "x-mutt-action")) ||
578 (p = mutt_param_get(&b->parameter, "x-action")) ||
579 (p = mutt_param_get(&b->parameter, "action"))) &&
580 mutt_istr_startswith(p, "pgp-sign"))
581 {
582 t |= PGP_SIGN;
583 }
584 else if (p && mutt_istr_startswith(p, "pgp-encrypt"))
585 t |= PGP_ENCRYPT;
586 else if (p && mutt_istr_startswith(p, "pgp-keys"))
587 t |= PGP_KEY;
588 }
589 if (t)
590 t |= PGP_INLINE;
591
592 return t;
593}
594
602{
603 if (!b)
604 return SEC_NO_FLAGS;
605
606 if (((b->type & TYPE_APPLICATION) == 0) || !b->subtype)
607 return SEC_NO_FLAGS;
608
609 char *t = NULL;
610 bool complain = false;
611 /* S/MIME MIME types don't need x- anymore, see RFC2311 */
612 if (mutt_istr_equal(b->subtype, "x-pkcs7-mime") || mutt_istr_equal(b->subtype, "pkcs7-mime"))
613 {
614 t = mutt_param_get(&b->parameter, "smime-type");
615 if (t)
616 {
617 if (mutt_istr_equal(t, "enveloped-data"))
618 return SMIME_ENCRYPT;
619 if (mutt_istr_equal(t, "signed-data"))
620 return SMIME_SIGN | SMIME_OPAQUE;
621 return SEC_NO_FLAGS;
622 }
623 /* Netscape 4.7 uses
624 * Content-Description: S/MIME Encrypted Message
625 * instead of Content-Type parameter */
626 if (mutt_istr_equal(b->description, "S/MIME Encrypted Message"))
627 return SMIME_ENCRYPT;
628 complain = true;
629 }
630 else if (!mutt_istr_equal(b->subtype, "octet-stream"))
631 return SEC_NO_FLAGS;
632
633 t = mutt_param_get(&b->parameter, "name");
634
635 if (!t)
636 t = b->d_filename;
637 if (!t)
638 t = b->filename;
639 if (!t)
640 {
641 if (complain)
642 {
643 mutt_message(_("S/MIME messages with no hints on content are unsupported"));
644 }
645 return SEC_NO_FLAGS;
646 }
647
648 /* no .p7c, .p10 support yet. */
649
650 int len = mutt_str_len(t) - 4;
651 if ((len > 0) && (*(t + len) == '.'))
652 {
653 len++;
654 if (mutt_istr_equal((t + len), "p7m"))
655 {
656 /* Not sure if this is the correct thing to do, but
657 * it's required for compatibility with Outlook */
658 return SMIME_SIGN | SMIME_OPAQUE;
659 }
660 else if (mutt_istr_equal((t + len), "p7s"))
661 return SMIME_SIGN | SMIME_OPAQUE;
662 }
663
664 return SEC_NO_FLAGS;
665}
666
676{
677 if (!WithCrypto || !b)
678 return SEC_NO_FLAGS;
679
681
682 if (b->type == TYPE_APPLICATION)
683 {
686
688 {
690 if (rc && b->goodsig)
691 rc |= SEC_GOODSIGN;
692 if (rc && b->badsig)
693 rc |= SEC_BADSIGN;
694 }
695 }
696 else if (((WithCrypto & APPLICATION_PGP) != 0) && (b->type == TYPE_TEXT))
697 {
699 if (rc && b->goodsig)
700 rc |= SEC_GOODSIGN;
701 }
702
703 if (b->type == TYPE_MULTIPART)
704 {
708
709 if (rc && b->goodsig)
710 rc |= SEC_GOODSIGN;
711#ifdef USE_AUTOCRYPT
712 if (rc && b->is_autocrypt)
713 rc |= SEC_AUTOCRYPT;
714#endif
715 }
716
717 if ((b->type == TYPE_MULTIPART) || (b->type == TYPE_MESSAGE))
718 {
719 SecurityFlags u = b->parts ? SEC_ALL_FLAGS : SEC_NO_FLAGS; /* Bits set in all parts */
720 SecurityFlags w = SEC_NO_FLAGS; /* Bits set in any part */
721
722 for (b = b->parts; b; b = b->next)
723 {
724 const SecurityFlags v = crypt_query(b);
725 u &= v;
726 w |= v;
727 }
728 rc |= u | (w & ~SEC_GOODSIGN);
729
730 if ((w & SEC_GOODSIGN) && !(u & SEC_GOODSIGN))
731 rc |= SEC_PARTSIGN;
732 }
733
734 return rc;
735}
736
747int crypt_write_signed(struct Body *a, struct State *s, const char *tempfile)
748{
749 if (!WithCrypto)
750 return -1;
751
752 FILE *fp = mutt_file_fopen(tempfile, "w");
753 if (!fp)
754 {
755 mutt_perror(tempfile);
756 return -1;
757 }
758
759 if (!mutt_file_seek(s->fp_in, a->hdr_offset, SEEK_SET))
760 {
761 mutt_file_fclose(&fp);
762 return -1;
763 }
764 size_t bytes = a->length + a->offset - a->hdr_offset;
765 bool hadcr = false;
766 while (bytes > 0)
767 {
768 const int c = fgetc(s->fp_in);
769 if (c == EOF)
770 break;
771
772 bytes--;
773
774 if (c == '\r')
775 hadcr = true;
776 else
777 {
778 if ((c == '\n') && !hadcr)
779 fputc('\r', fp);
780
781 hadcr = false;
782 }
783
784 fputc(c, fp);
785 }
786 mutt_file_fclose(&fp);
787
788 return 0;
789}
790
796{
797 if (!WithCrypto)
798 return;
799
800 const bool c_pgp_strict_enc = cs_subset_bool(NeoMutt->sub, "pgp_strict_enc");
801 while (a)
802 {
803 if (a->type == TYPE_MULTIPART)
804 {
805 if (a->encoding != ENC_7BIT)
806 {
807 a->encoding = ENC_7BIT;
809 }
810 else if (((WithCrypto & APPLICATION_PGP) != 0) && c_pgp_strict_enc)
812 }
813 else if ((a->type == TYPE_MESSAGE) && !mutt_istr_equal(a->subtype, "delivery-status"))
814 {
815 if (a->encoding != ENC_7BIT)
817 }
818 else if (a->encoding == ENC_8BIT)
820 else if (a->encoding == ENC_BINARY)
821 a->encoding = ENC_BASE64;
822 else if (a->content && (a->encoding != ENC_BASE64) &&
823 (a->content->from || (a->content->space && c_pgp_strict_enc)))
824 {
826 }
827 a = a->next;
828 }
829}
830
838void crypt_extract_keys_from_messages(struct Mailbox *m, struct EmailList *el)
839{
840 if (!WithCrypto)
841 return;
842
843 struct Buffer *tempfname = mutt_buffer_pool_get();
844 mutt_buffer_mktemp(tempfname);
845 FILE *fp_out = mutt_file_fopen(mutt_buffer_string(tempfname), "w");
846 if (!fp_out)
847 {
849 goto cleanup;
850 }
851
854
855 struct EmailNode *en = NULL;
856 STAILQ_FOREACH(en, el, entries)
857 {
858 struct Email *e = en->email;
859 struct Message *msg = mx_msg_open(m, e->msgno);
860 if (!msg)
861 {
862 continue;
863 }
866 {
867 mx_msg_close(m, &msg);
868 mutt_file_fclose(&fp_out);
869 break;
870 }
871
872 if (((WithCrypto & APPLICATION_PGP) != 0) && (e->security & APPLICATION_PGP))
873 {
875 fflush(fp_out);
876
877 mutt_endwin();
878 puts(_("Trying to extract PGP keys...\n"));
880 }
881
883 {
884 const bool encrypt = e->security & SEC_ENCRYPT;
885 mutt_copy_message(fp_out, e, msg,
888 CH_NO_FLAGS, 0);
889 fflush(fp_out);
890
891 char *mbox = NULL;
892 if (!TAILQ_EMPTY(&e->env->from))
893 {
895 mbox = TAILQ_FIRST(&e->env->from)->mailbox;
896 }
897 else if (!TAILQ_EMPTY(&e->env->sender))
898 {
900 mbox = TAILQ_FIRST(&e->env->sender)->mailbox;
901 }
902 if (mbox)
903 {
904 mutt_endwin();
905 puts(_("Trying to extract S/MIME certificates..."));
907 }
908 }
909 mx_msg_close(m, &msg);
910
911 rewind(fp_out);
912 }
913
914 mutt_file_fclose(&fp_out);
915 if (isendwin())
917
919
921 OptDontHandlePgpKeys = false;
922
923cleanup:
924 mutt_buffer_pool_release(&tempfname);
925}
926
941int crypt_get_keys(struct Email *e, char **keylist, bool oppenc_mode)
942{
943 if (!WithCrypto)
944 return 0;
945
946 struct AddressList addrlist = TAILQ_HEAD_INITIALIZER(addrlist);
947 const char *fqdn = mutt_fqdn(true, NeoMutt->sub);
948 const char *self_encrypt = NULL;
949
950 /* Do a quick check to make sure that we can find all of the encryption
951 * keys if the user has requested this service. */
952
953 *keylist = NULL;
954
955#ifdef USE_AUTOCRYPT
956 if (!oppenc_mode && (e->security & SEC_AUTOCRYPT))
957 {
959 return -1;
960 return 0;
961 }
962#endif
963
965 OptPgpCheckTrust = true;
966
967 mutt_addrlist_copy(&addrlist, &e->env->to, false);
968 mutt_addrlist_copy(&addrlist, &e->env->cc, false);
969 mutt_addrlist_copy(&addrlist, &e->env->bcc, false);
970 mutt_addrlist_qualify(&addrlist, fqdn);
971 mutt_addrlist_dedupe(&addrlist);
972
973 if (oppenc_mode || (e->security & SEC_ENCRYPT))
974 {
975 if (((WithCrypto & APPLICATION_PGP) != 0) && (e->security & APPLICATION_PGP))
976 {
977 *keylist = crypt_pgp_find_keys(&addrlist, oppenc_mode);
978 if (!*keylist)
979 {
980 mutt_addrlist_clear(&addrlist);
981 return -1;
982 }
983 OptPgpCheckTrust = false;
984 const bool c_pgp_self_encrypt = cs_subset_bool(NeoMutt->sub, "pgp_self_encrypt");
985 const char *const c_pgp_default_key = cs_subset_string(NeoMutt->sub, "pgp_default_key");
986 const enum QuadOption c_pgp_encrypt_self = cs_subset_quad(NeoMutt->sub, "pgp_encrypt_self");
987 if (c_pgp_self_encrypt || (c_pgp_encrypt_self == MUTT_YES))
988 self_encrypt = c_pgp_default_key;
989 }
991 {
992 *keylist = crypt_smime_find_keys(&addrlist, oppenc_mode);
993 if (!*keylist)
994 {
995 mutt_addrlist_clear(&addrlist);
996 return -1;
997 }
998 const bool c_smime_self_encrypt = cs_subset_bool(NeoMutt->sub, "smime_self_encrypt");
999 const char *const c_smime_default_key = cs_subset_string(NeoMutt->sub, "smime_default_key");
1000 const enum QuadOption c_smime_encrypt_self = cs_subset_quad(NeoMutt->sub, "smime_encrypt_self");
1001 if (c_smime_self_encrypt || (c_smime_encrypt_self == MUTT_YES))
1002 self_encrypt = c_smime_default_key;
1003 }
1004 }
1005
1006 if (!oppenc_mode && self_encrypt)
1007 {
1008 const size_t keylist_size = mutt_str_len(*keylist);
1009 mutt_mem_realloc(keylist, keylist_size + mutt_str_len(self_encrypt) + 2);
1010 sprintf(*keylist + keylist_size, " %s", self_encrypt);
1011 }
1012
1013 mutt_addrlist_clear(&addrlist);
1014
1015 return 0;
1016}
1017
1026{
1027 if (!WithCrypto)
1028 return;
1029
1030 const bool c_crypt_opportunistic_encrypt = cs_subset_bool(NeoMutt->sub, "crypt_opportunistic_encrypt");
1031 if (!(c_crypt_opportunistic_encrypt && (e->security & SEC_OPPENCRYPT)))
1032 return;
1033
1034 char *pgpkeylist = NULL;
1035
1036 crypt_get_keys(e, &pgpkeylist, 1);
1037 if (pgpkeylist)
1038 {
1039 e->security |= SEC_ENCRYPT;
1040 FREE(&pgpkeylist);
1041 }
1042 else
1043 {
1044 e->security &= ~SEC_ENCRYPT;
1045 }
1046}
1047
1054static void crypt_fetch_signatures(struct Body ***signatures, struct Body *a, int *n)
1055{
1056 if (!WithCrypto)
1057 return;
1058
1059 for (; a; a = a->next)
1060 {
1061 if (a->type == TYPE_MULTIPART)
1062 crypt_fetch_signatures(signatures, a->parts, n);
1063 else
1064 {
1065 if ((*n % 5) == 0)
1066 mutt_mem_realloc(signatures, (*n + 6) * sizeof(struct Body **));
1067
1068 (*signatures)[(*n)++] = a;
1069 }
1070 }
1071}
1072
1079{
1080 const bool c_crypt_protected_headers_write = cs_subset_bool(NeoMutt->sub, "crypt_protected_headers_write");
1081 const char *const c_crypt_protected_headers_subject =
1082 cs_subset_string(NeoMutt->sub, "crypt_protected_headers_subject");
1083 if (c_crypt_protected_headers_write && (e->security & (SEC_ENCRYPT | SEC_AUTOCRYPT)) &&
1084 !(e->security & SEC_INLINE) && c_crypt_protected_headers_subject)
1085 {
1086 return true;
1087 }
1088
1089 return false;
1090}
1091
1096{
1097 const bool c_crypt_protected_headers_read = cs_subset_bool(NeoMutt->sub, "crypt_protected_headers_read");
1098 if (c_crypt_protected_headers_read && b->mime_headers)
1099 {
1100 if (b->mime_headers->subject)
1101 {
1102 const bool display = (s->flags & MUTT_DISPLAY);
1103
1104 const bool c_weed = cs_subset_bool(NeoMutt->sub, "weed");
1105 if (display && c_weed && mutt_matches_ignore("subject"))
1106 return 0;
1107
1109 const short c_wrap = cs_subset_number(NeoMutt->sub, "wrap");
1110 int wraplen = display ? mutt_window_wrap_cols(s->wraplen, c_wrap) : 0;
1111
1113 wraplen, display ? CH_DISPLAY : CH_NO_FLAGS, NeoMutt->sub);
1114 state_puts(s, "\n");
1115 }
1116 }
1117
1118 return 0;
1119}
1120
1124int mutt_signed_handler(struct Body *b, struct State *s)
1125{
1126 if (!WithCrypto)
1127 return -1;
1128
1129 bool inconsistent = false;
1130 struct Body *top = b;
1131 struct Body **signatures = NULL;
1132 int sigcnt = 0;
1133 int rc = 0;
1134 struct Buffer *tempfile = NULL;
1135
1136 b = b->parts;
1137 SecurityFlags signed_type = mutt_is_multipart_signed(top);
1138 if (signed_type == SEC_NO_FLAGS)
1139 {
1140 /* A null protocol value is already checked for in mutt_body_handler() */
1141 state_printf(s, _("[-- Error: Unknown multipart/signed protocol %s --]\n\n"),
1142 mutt_param_get(&top->parameter, "protocol"));
1143 return mutt_body_handler(b, s);
1144 }
1145
1146 if (!(b && b->next))
1147 inconsistent = true;
1148 else
1149 {
1150 switch (signed_type)
1151 {
1152 case SEC_SIGN:
1153 if ((b->next->type != TYPE_MULTIPART) || !mutt_istr_equal(b->next->subtype, "mixed"))
1154 {
1155 inconsistent = true;
1156 }
1157 break;
1158 case PGP_SIGN:
1159 if ((b->next->type != TYPE_APPLICATION) ||
1160 !mutt_istr_equal(b->next->subtype, "pgp-signature"))
1161 {
1162 inconsistent = true;
1163 }
1164 break;
1165 case SMIME_SIGN:
1166 if ((b->next->type != TYPE_APPLICATION) ||
1167 (!mutt_istr_equal(b->next->subtype, "x-pkcs7-signature") &&
1168 !mutt_istr_equal(b->next->subtype, "pkcs7-signature")))
1169 {
1170 inconsistent = true;
1171 }
1172 break;
1173 default:
1174 inconsistent = true;
1175 }
1176 }
1177 if (inconsistent)
1178 {
1179 state_attach_puts(s, _("[-- Error: Missing or bad-format multipart/signed signature --]\n\n"));
1180 return mutt_body_handler(b, s);
1181 }
1182
1183 if (s->flags & MUTT_DISPLAY)
1184 {
1185 crypt_fetch_signatures(&signatures, b->next, &sigcnt);
1186
1187 if (sigcnt != 0)
1188 {
1189 tempfile = mutt_buffer_pool_get();
1190 mutt_buffer_mktemp(tempfile);
1191 bool goodsig = true;
1192 if (crypt_write_signed(b, s, mutt_buffer_string(tempfile)) == 0)
1193 {
1194 for (int i = 0; i < sigcnt; i++)
1195 {
1196 if (((WithCrypto & APPLICATION_PGP) != 0) &&
1197 (signatures[i]->type == TYPE_APPLICATION) &&
1198 mutt_istr_equal(signatures[i]->subtype, "pgp-signature"))
1199 {
1200 if (crypt_pgp_verify_one(signatures[i], s, mutt_buffer_string(tempfile)) != 0)
1201 goodsig = false;
1202
1203 continue;
1204 }
1205
1206 if (((WithCrypto & APPLICATION_SMIME) != 0) &&
1207 (signatures[i]->type == TYPE_APPLICATION) &&
1208 (mutt_istr_equal(signatures[i]->subtype, "x-pkcs7-signature") ||
1209 mutt_istr_equal(signatures[i]->subtype, "pkcs7-signature")))
1210 {
1211 if (crypt_smime_verify_one(signatures[i], s, mutt_buffer_string(tempfile)) != 0)
1212 goodsig = false;
1213
1214 continue;
1215 }
1216
1217 state_printf(s, _("[-- Warning: We can't verify %s/%s signatures. --]\n\n"),
1218 TYPE(signatures[i]), signatures[i]->subtype);
1219 }
1220 }
1221
1223 mutt_buffer_pool_release(&tempfile);
1224
1225 top->goodsig = goodsig;
1226 top->badsig = !goodsig;
1227
1228 /* Now display the signed body */
1229 state_attach_puts(s, _("[-- The following data is signed --]\n\n"));
1230
1232
1233 FREE(&signatures);
1234 }
1235 else
1236 {
1237 state_attach_puts(s, _("[-- Warning: Can't find any signatures. --]\n\n"));
1238 }
1239 }
1240
1241 rc = mutt_body_handler(b, s);
1242
1243 if ((s->flags & MUTT_DISPLAY) && (sigcnt != 0))
1244 state_attach_puts(s, _("\n[-- End of signed data --]\n"));
1245
1246 return rc;
1247}
1248
1263const char *crypt_get_fingerprint_or_id(const char *p, const char **pphint,
1264 const char **ppl, const char **pps)
1265{
1266 const char *ps = NULL, *pl = NULL, *phint = NULL;
1267 char *pfcopy = NULL, *s1 = NULL, *s2 = NULL;
1268 char c;
1269 int isid;
1270 size_t hexdigits;
1271
1272 /* User input may be partial name, fingerprint or short or long key ID,
1273 * independent of `$pgp_long_ids`.
1274 * Fingerprint without spaces is 40 hex digits (SHA-1) or 32 hex digits (MD5).
1275 * Strip leading "0x" for key ID detection and prepare pl and ps to indicate
1276 * if an ID was found and to simplify logic in the key loop's inner
1277 * condition of the caller. */
1278
1279 char *pf = mutt_str_skip_whitespace(p);
1280 if (mutt_istr_startswith(pf, "0x"))
1281 pf += 2;
1282
1283 /* Check if a fingerprint is given, must be hex digits only, blanks
1284 * separating groups of 4 hex digits are allowed. Also pre-check for ID. */
1285 isid = 2; /* unknown */
1286 hexdigits = 0;
1287 s1 = pf;
1288 do
1289 {
1290 c = *(s1++);
1291 if ((('0' <= c) && (c <= '9')) || (('A' <= c) && (c <= 'F')) ||
1292 (('a' <= c) && (c <= 'f')))
1293 {
1294 hexdigits++;
1295 if (isid == 2)
1296 isid = 1; /* it is an ID so far */
1297 }
1298 else if (c)
1299 {
1300 isid = 0; /* not an ID */
1301 if ((c == ' ') && ((hexdigits % 4) == 0))
1302 ; /* skip blank before or after 4 hex digits */
1303 else
1304 break; /* any other character or position */
1305 }
1306 } while (c);
1307
1308 /* If at end of input, check for correct fingerprint length and copy if. */
1309 pfcopy = (!c && ((hexdigits == 40) || (hexdigits == 32)) ? mutt_str_dup(pf) : NULL);
1310
1311 if (pfcopy)
1312 {
1313 /* Use pfcopy to strip all spaces from fingerprint and as hint. */
1314 s1 = pfcopy;
1315 s2 = pfcopy;
1316 do
1317 {
1318 *(s1++) = *(s2 = mutt_str_skip_whitespace(s2));
1319 } while (*(s2++));
1320
1321 phint = pfcopy;
1322 ps = NULL;
1323 pl = NULL;
1324 }
1325 else
1326 {
1327 phint = p;
1328 ps = NULL;
1329 pl = NULL;
1330 if (isid == 1)
1331 {
1332 if (mutt_str_len(pf) == 16)
1333 pl = pf; /* long key ID */
1334 else if (mutt_str_len(pf) == 8)
1335 ps = pf; /* short key ID */
1336 }
1337 }
1338
1339 *pphint = phint;
1340 *ppl = pl;
1341 *pps = ps;
1342 return pfcopy;
1343}
1344
1352bool crypt_is_numerical_keyid(const char *s)
1353{
1354 /* or should we require the "0x"? */
1355 if (mutt_strn_equal(s, "0x", 2))
1356 s += 2;
1357 if (strlen(s) % 8)
1358 return false;
1359 while (*s)
1360 if (!strchr("0123456789ABCDEFabcdef", *s++))
1361 return false;
1362
1363 return true;
1364}
void mutt_addrlist_copy(struct AddressList *dst, const struct AddressList *src, bool prune)
Copy a list of addresses into another list.
Definition: address.c:737
void mutt_addrlist_qualify(struct AddressList *al, const char *host)
Expand local names in an Address list using a hostname.
Definition: address.c:650
void mutt_addrlist_clear(struct AddressList *al)
Unlink and free all Address in an AddressList.
Definition: address.c:1470
void mutt_addr_free(struct Address **ptr)
Free a single Address.
Definition: address.c:440
void mutt_addrlist_dedupe(struct AddressList *al)
Remove duplicate addresses.
Definition: address.c:1407
Email Address Handling.
Email Aliases.
void mutt_expand_aliases(struct AddressList *al)
Expand aliases in a List of Addresses.
Definition: alias.c:298
GUI display the mailboxes in a side panel.
void mutt_parse_mime_message(struct Email *e, FILE *fp)
Parse a MIME email.
Definition: attachments.c:591
Autocrypt end-to-end encryption.
@ AUTOCRYPT_REC_NO
Do no use Autocrypt.
Definition: lib.h:159
int mutt_autocrypt_generate_gossip_list(struct Email *e)
Create the gossip list headers.
Definition: autocrypt.c:828
enum AutocryptRec mutt_autocrypt_ui_recommendation(const struct Email *e, char **keylist)
Get the recommended action for an Email.
Definition: autocrypt.c:567
static const char * mutt_buffer_string(const struct Buffer *buf)
Convert a buffer to a const char * "string".
Definition: buffer.h:77
const char * cs_subset_string(const struct ConfigSubset *sub, const char *name)
Get a string config item by name.
Definition: helpers.c:317
enum QuadOption cs_subset_quad(const struct ConfigSubset *sub, const char *name)
Get a quad-value config item by name.
Definition: helpers.c:218
short cs_subset_number(const struct ConfigSubset *sub, const char *name)
Get a number config item by name.
Definition: helpers.c:169
const struct Address * cs_subset_address(const struct ConfigSubset *sub, const char *name)
Get an Address config item by name.
Definition: helpers.c:49
bool cs_subset_bool(const struct ConfigSubset *sub, const char *name)
Get a boolean config item by name.
Definition: helpers.c:73
Convenience wrapper for the config headers.
int mutt_copy_message(FILE *fp_out, struct Email *e, struct Message *msg, CopyMessageFlags cmflags, CopyHeaderFlags chflags, int wraplen)
Copy a message from a Mailbox.
Definition: copy.c:864
Duplicate the structure of an entire email.
#define MUTT_CM_DECODE
Decode the message body into text/plain.
Definition: copy.h:38
#define MUTT_CM_CHARCONV
Perform character set conversions.
Definition: copy.h:42
#define MUTT_CM_DECODE_SMIME
Used for decoding S/MIME messages.
Definition: copy.h:46
#define CH_DISPLAY
Display result to user.
Definition: copy.h:70
#define MUTT_CM_NO_FLAGS
No flags are set.
Definition: copy.h:35
#define MUTT_CM_DECODE_CRYPT
Definition: copy.h:48
#define MUTT_CM_NOHEADER
Don't copy the message header.
Definition: copy.h:36
#define CH_NO_FLAGS
No flags are set.
Definition: copy.h:51
Convenience wrapper for the core headers.
void crypt_current_time(struct State *s, const char *app_name)
Print the current time.
Definition: crypt.c:70
SecurityFlags mutt_is_application_pgp(struct Body *b)
Does the message use PGP?
Definition: crypt.c:544
void crypt_opportunistic_encrypt(struct Email *e)
Can all recipients be determined.
Definition: crypt.c:1025
bool crypt_is_numerical_keyid(const char *s)
Is this a numerical keyid.
Definition: crypt.c:1352
int crypt_write_signed(struct Body *a, struct State *s, const char *tempfile)
Write the message body/part.
Definition: crypt.c:747
SecurityFlags mutt_is_multipart_signed(struct Body *b)
Is a message signed?
Definition: crypt.c:402
static void crypt_fetch_signatures(struct Body ***signatures, struct Body *a, int *n)
Create an array of an emails parts.
Definition: crypt.c:1054
SecurityFlags mutt_is_application_smime(struct Body *b)
Does the message use S/MIME?
Definition: crypt.c:601
bool crypt_valid_passphrase(SecurityFlags flags)
Check that we have a usable passphrase, ask if not.
Definition: crypt.c:134
int mutt_is_valid_multipart_pgp_encrypted(struct Body *b)
Is this a valid multi-part encrypted message?
Definition: crypt.c:463
bool mutt_should_hide_protected_subject(struct Email *e)
Should NeoMutt hide the protected subject?
Definition: crypt.c:1078
void crypt_convert_to_7bit(struct Body *a)
Convert an email to 7bit encoding.
Definition: crypt.c:795
SecurityFlags mutt_is_multipart_encrypted(struct Body *b)
Does the message have encrypted parts?
Definition: crypt.c:439
int mutt_protect(struct Email *e, char *keylist, bool postpone)
Encrypt and/or sign a message.
Definition: crypt.c:159
void crypt_forget_passphrase(void)
Forget a passphrase and display a message.
Definition: crypt.c:92
const char * crypt_get_fingerprint_or_id(const char *p, const char **pphint, const char **ppl, const char **pps)
Get the fingerprint or long key ID.
Definition: crypt.c:1263
SecurityFlags mutt_is_malformed_multipart_pgp_encrypted(struct Body *b)
Check for malformed layout.
Definition: crypt.c:500
int crypt_get_keys(struct Email *e, char **keylist, bool oppenc_mode)
Check we have all the keys we need.
Definition: crypt.c:941
void crypt_extract_keys_from_messages(struct Mailbox *m, struct EmailList *el)
Extract keys from a message.
Definition: crypt.c:838
SecurityFlags crypt_query(struct Body *b)
Check out the type of encryption used.
Definition: crypt.c:675
Signing/encryption multiplexor.
char * crypt_smime_find_keys(struct AddressList *addrlist, bool oppenc_mode)
Wrapper for CryptModuleSpecs::find_keys()
Definition: cryptglue.c:475
struct Body * crypt_pgp_sign_message(struct Body *a, const struct AddressList *from)
Wrapper for CryptModuleSpecs::sign_message()
Definition: cryptglue.c:327
char * crypt_pgp_find_keys(struct AddressList *addrlist, bool oppenc_mode)
Wrapper for CryptModuleSpecs::find_keys()
Definition: cryptglue.c:316
struct Body * crypt_smime_build_smime_entity(struct Body *a, char *certlist)
Wrapper for CryptModuleSpecs::smime_build_smime_entity()
Definition: cryptglue.c:497
int crypt_smime_verify_one(struct Body *sigbdy, struct State *s, const char *tempf)
Wrapper for CryptModuleSpecs::verify_one()
Definition: cryptglue.c:517
bool crypt_smime_valid_passphrase(void)
Wrapper for CryptModuleSpecs::valid_passphrase()
Definition: cryptglue.c:422
void crypt_pgp_invoke_import(const char *fname)
Wrapper for CryptModuleSpecs::pgp_invoke_import()
Definition: cryptglue.c:364
void crypt_smime_void_passphrase(void)
Wrapper for CryptModuleSpecs::void_passphrase()
Definition: cryptglue.c:413
int crypt_pgp_verify_one(struct Body *sigbdy, struct State *s, const char *tempf)
Wrapper for CryptModuleSpecs::verify_one()
Definition: cryptglue.c:373
void crypt_smime_invoke_import(const char *infile, const char *mailbox)
Wrapper for CryptModuleSpecs::smime_invoke_import()
Definition: cryptglue.c:508
void crypt_pgp_set_sender(const char *sender)
Wrapper for CryptModuleSpecs::set_sender()
Definition: cryptglue.c:404
void crypt_smime_set_sender(const char *sender)
Wrapper for CryptModuleSpecs::set_sender()
Definition: cryptglue.c:539
void crypt_pgp_void_passphrase(void)
Wrapper for CryptModuleSpecs::void_passphrase()
Definition: cryptglue.c:191
bool crypt_pgp_valid_passphrase(void)
Wrapper for CryptModuleSpecs::valid_passphrase()
Definition: cryptglue.c:200
struct Body * crypt_pgp_encrypt_message(struct Email *e, struct Body *a, char *keylist, int sign, const struct AddressList *from)
Wrapper for CryptModuleSpecs::pgp_encrypt_message()
Definition: cryptglue.c:338
struct Body * crypt_pgp_traditional_encryptsign(struct Body *a, SecurityFlags flags, char *keylist)
Wrapper for CryptModuleSpecs::pgp_traditional_encryptsign()
Definition: cryptglue.c:294
struct Body * crypt_smime_sign_message(struct Body *a, const struct AddressList *from)
Wrapper for CryptModuleSpecs::sign_message()
Definition: cryptglue.c:486
Wrapper around crypto functions.
int mutt_any_key_to_continue(const char *s)
Prompt the user to 'press any key' and wait.
Definition: curs_lib.c:387
void mutt_endwin(void)
Shutdown curses.
Definition: curs_lib.c:354
size_t mutt_date_localtime_format(char *buf, size_t buflen, const char *format, time_t t)
Format localtime.
Definition: date.c:692
#define MUTT_DATE_NOW
Constant representing the 'current time', see: mutt_date_gmtime(), mutt_date_localtime()
Definition: date.h:39
void mutt_body_free(struct Body **ptr)
Free a Body.
Definition: body.c:57
Structs that make up an email.
void mutt_env_free(struct Envelope **ptr)
Free an Envelope.
Definition: envelope.c:97
struct Envelope * mutt_env_new(void)
Create a new Envelope.
Definition: envelope.c:43
FILE * mutt_file_fopen(const char *path, const char *mode)
Call fopen() safely.
Definition: file.c:618
int mutt_file_fclose(FILE **fp)
Close a FILE handle (and NULL the pointer)
Definition: file.c:152
bool mutt_file_seek(FILE *fp, LOFF_T offset, int whence)
Wrapper for fseeko with error handling.
Definition: file.c:690
void mutt_file_unlink(const char *s)
Delete a file, carefully.
Definition: file.c:194
int mutt_signed_handler(struct Body *b, struct State *s)
Verify a "multipart/signed" body - Implements handler_t -.
Definition: crypt.c:1124
int mutt_protected_headers_handler(struct Body *b, struct State *s)
Process a protected header - Implements handler_t -.
Definition: crypt.c:1095
#define mutt_error(...)
Definition: logging.h:87
#define mutt_message(...)
Definition: logging.h:86
#define mutt_perror(...)
Definition: logging.h:88
Convenience wrapper for the gui headers.
int mutt_body_handler(struct Body *b, struct State *s)
Handler for the Body of an email.
Definition: handler.c:1597
Decide how to display email content.
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:420
void mutt_mem_realloc(void *ptr, size_t size)
Resize a block of memory on the heap.
Definition: memory.c:114
#define FREE(x)
Definition: memory.h:43
@ ENC_7BIT
7-bit text
Definition: mime.h:49
@ ENC_BINARY
Binary.
Definition: mime.h:53
@ ENC_BASE64
Base-64 encoded text.
Definition: mime.h:52
@ ENC_8BIT
8-bit text
Definition: mime.h:50
@ ENC_QUOTED_PRINTABLE
Quoted-printable text.
Definition: mime.h:51
@ TYPE_MESSAGE
Type: 'message/*'.
Definition: mime.h:35
@ TYPE_MULTIPART
Type: 'multipart/*'.
Definition: mime.h:37
@ TYPE_APPLICATION
Type: 'application/*'.
Definition: mime.h:33
@ TYPE_TEXT
Type: 'text/*'.
Definition: mime.h:38
#define TYPE(body)
Definition: mime.h:89
struct Body * mutt_remove_multipart(struct Body *b)
Extract the multipart body if it exists.
Definition: multipart.c:126
Convenience wrapper for the library headers.
#define _(a)
Definition: message.h:28
int state_printf(struct State *s, const char *fmt,...)
Write a formatted string to the State.
Definition: state.c:183
void state_attach_puts(struct State *s, const char *t)
Write a string to the state.
Definition: state.c:100
void state_mark_protected_header(struct State *s)
Write a unique marker around protected headers.
Definition: state.c:86
#define state_puts(STATE, STR)
Definition: state.h:56
#define MUTT_DISPLAY
Output is displayed to the user.
Definition: state.h:32
bool mutt_istr_equal(const char *a, const char *b)
Compare two strings, ignoring case.
Definition: string.c:819
char * mutt_str_dup(const char *str)
Copy a string, safely.
Definition: string.c:250
bool mutt_strn_equal(const char *a, const char *b, size_t num)
Check for equality of two strings (to a maximum), safely.
Definition: string.c:496
char * mutt_str_skip_whitespace(const char *p)
Find the first non-whitespace character in a string.
Definition: string.c:622
size_t mutt_str_len(const char *a)
Calculate the length of a string, safely.
Definition: string.c:567
size_t mutt_istr_startswith(const char *str, const char *prefix)
Check whether a string starts with a prefix, ignoring case.
Definition: string.c:239
char * mutt_str_replace(char **p, const char *s)
Replace one string with another.
Definition: string.c:326
Many unsorted constants and some structs.
int mutt_window_wrap_cols(int width, short wrap)
Calculate the wrap column for a given screen width.
Definition: mutt_window.c:365
Some miscellaneous functions.
#define mutt_buffer_mktemp(buf)
Definition: muttlib.h:74
int mx_msg_close(struct Mailbox *m, struct Message **msg)
Close a message.
Definition: mx.c:1193
struct Message * mx_msg_open(struct Mailbox *m, int msgno)
Return a stream pointer for a message.
Definition: mx.c:1147
API for mailboxes.
#define SEC_INLINE
Email has an inline signature.
Definition: lib.h:85
#define SEC_AUTOCRYPT
(Autocrypt) Message will be, or was Autocrypt encrypt+signed
Definition: lib.h:87
#define PGP_SIGN
Definition: lib.h:97
uint16_t SecurityFlags
Flags, e.g. SEC_ENCRYPT.
Definition: lib.h:76
#define SEC_OPPENCRYPT
Opportunistic encrypt mode.
Definition: lib.h:86
#define SEC_ALL_FLAGS
Definition: lib.h:94
#define SEC_GOODSIGN
Email has a valid signature.
Definition: lib.h:80
#define APPLICATION_PGP
Use PGP to encrypt/sign.
Definition: lib.h:90
#define PGP_ENCRYPT
Definition: lib.h:96
#define SMIME_SIGN
Definition: lib.h:103
#define PGP_INLINE
Definition: lib.h:100
#define SEC_BADSIGN
Email has a bad signature.
Definition: lib.h:81
#define APPLICATION_SMIME
Use SMIME to encrypt/sign.
Definition: lib.h:91
#define SEC_NO_FLAGS
No flags are set.
Definition: lib.h:77
#define SEC_PARTSIGN
Not all parts of the email is signed.
Definition: lib.h:82
#define SMIME_OPAQUE
Definition: lib.h:106
#define SEC_ENCRYPT
Email is encrypted.
Definition: lib.h:78
#define PGP_KEY
Definition: lib.h:99
#define SMIME_ENCRYPT
Definition: lib.h:102
#define WithCrypto
Definition: lib.h:116
#define SEC_SIGN
Email is signed.
Definition: lib.h:79
Handling of global boolean variables.
bool OptDontHandlePgpKeys
(pseudo) used to extract PGP keys
Definition: options.h:41
bool OptPgpCheckTrust
(pseudo) used by dlg_select_pgp_key()
Definition: options.h:54
char * mutt_param_get(const struct ParameterList *pl, const char *s)
Find a matching Parameter.
Definition: parameter.c:84
void mutt_param_delete(struct ParameterList *pl, const char *attribute)
Delete a matching Parameter.
Definition: parameter.c:142
void mutt_param_set(struct ParameterList *pl, const char *attribute, const char *value)
Set a Parameter.
Definition: parameter.c:110
bool mutt_matches_ignore(const char *s)
Does the string match the ignore list.
Definition: parse.c:313
void mutt_buffer_pool_release(struct Buffer **pbuf)
Free a Buffer from the pool.
Definition: pool.c:112
struct Buffer * mutt_buffer_pool_get(void)
Get a Buffer from the pool.
Definition: pool.c:101
QuadOption
Possible values for a quad-option.
Definition: quad.h:36
@ MUTT_YES
User answered 'Yes', or assume 'Yes'.
Definition: quad.h:39
Ask the user a question.
enum QuadOption query_quadoption(enum QuadOption opt, const char *prompt)
Ask the user a quad-question.
Definition: question.c:386
#define STAILQ_FOREACH(var, head, field)
Definition: queue.h:352
#define TAILQ_FIRST(head)
Definition: queue.h:723
#define TAILQ_HEAD_INITIALIZER(head)
Definition: queue.h:637
#define TAILQ_EMPTY(head)
Definition: queue.h:721
Convenience wrapper for the send headers.
struct Address * mutt_default_from(struct ConfigSubset *sub)
Get a default 'from' Address.
Definition: send.c:1459
const char * mutt_fqdn(bool may_hide_host, const struct ConfigSubset *sub)
Get the Fully-Qualified Domain Name.
Definition: sendlib.c:698
void mutt_message_to_7bit(struct Body *a, FILE *fp, struct ConfigSubset *sub)
Convert an email's MIME parts to 7-bit.
Definition: sendlib.c:254
void mutt_prepare_envelope(struct Envelope *env, bool final, struct ConfigSubset *sub)
Prepare an email header.
Definition: sendlib.c:754
Key value store.
#define NONULL(x)
Definition: string2.h:37
An email address.
Definition: address.h:36
char * mailbox
Mailbox and host address.
Definition: address.h:38
The body of an email.
Definition: body.h:36
char * d_filename
filename to be used for the content-disposition header If NULL, filename is used instead.
Definition: body.h:56
struct Body * parts
parts of a multipart or message/rfc822
Definition: body.h:72
LOFF_T offset
offset where the actual data begins
Definition: body.h:52
bool badsig
Bad cryptographic signature (needed to check encrypted s/mime-signatures)
Definition: body.h:43
struct Envelope * mime_headers
Memory hole protected headers.
Definition: body.h:75
bool is_autocrypt
Flag autocrypt-decrypted messages for replying.
Definition: body.h:50
LOFF_T length
length (in bytes) of attachment
Definition: body.h:53
struct ParameterList parameter
Parameters of the content-type.
Definition: body.h:62
char * description
content-description
Definition: body.h:55
struct Content * content
Detailed info about the content of the attachment.
Definition: body.h:69
struct Body * next
next attachment in the list
Definition: body.h:71
char * subtype
content-type subtype
Definition: body.h:60
unsigned int encoding
content-transfer-encoding, ContentEncoding
Definition: body.h:41
bool goodsig
Good cryptographic signature.
Definition: body.h:45
long hdr_offset
Offset in stream where the headers begin.
Definition: body.h:80
unsigned int type
content-type primary type, ContentType
Definition: body.h:40
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:34
bool space
Whitespace at the end of lines?
Definition: content.h:42
bool from
Has a line beginning with "From "?
Definition: content.h:44
List of Emails.
Definition: email.h:132
struct Email * email
Email in the list.
Definition: email.h:133
The envelope/body of an email.
Definition: email.h:37
struct Envelope * env
Envelope information.
Definition: email.h:66
SecurityFlags security
bit 0-10: flags, bit 11,12: application, bit 13: traditional pgp See: ncrypt/lib.h pgplib....
Definition: email.h:41
struct Body * body
List of MIME parts.
Definition: email.h:67
int msgno
Number displayed to the user.
Definition: email.h:111
The header of an Email.
Definition: envelope.h:57
struct AddressList to
Email's 'To' list.
Definition: envelope.h:60
struct AddressList cc
Email's 'Cc' list.
Definition: envelope.h:61
struct AddressList sender
Email's sender.
Definition: envelope.h:63
char * subject
Email's subject.
Definition: envelope.h:70
struct AddressList bcc
Email's 'Bcc' list.
Definition: envelope.h:62
struct AddressList from
Email's 'From' list.
Definition: envelope.h:59
A mailbox.
Definition: mailbox.h:79
A local copy of an email.
Definition: mxapi.h:43
FILE * fp
pointer to the message data
Definition: mxapi.h:44
Container for Accounts, Notifications.
Definition: neomutt.h:37
struct ConfigSubset * sub
Inherited config items.
Definition: neomutt.h:39
Keep track when processing files.
Definition: state.h:46
int wraplen
Width to wrap lines to (when flags & MUTT_DISPLAY)
Definition: state.h:51
StateFlags flags
Flags, e.g. MUTT_DISPLAY.
Definition: state.h:50
FILE * fp_out
File to write to.
Definition: state.h:48
char * prefix
String to add to the beginning of each output line.
Definition: state.h:49
FILE * fp_in
File to read from.
Definition: state.h:47