2 * Copyright notice from original mutt:
3 * Copyright (C) 2001,2002 Oliver Ehli <elmy@acm.org>
4 * Copyright (C) 2002 Mike Schiraldi <raldi@research.netsol.com>
5 * Copyright (C) 2004 g10 Code GmbH
7 * This file is part of mutt-ng, see http://www.muttng.org/.
8 * It's licensed under the GNU General Public License,
9 * please see the file GPL in the top level source directory.
12 #include <lib-lib/lib-lib.h>
14 #ifdef HAVE_SYS_RESOURCE_H
15 # include <sys/resource.h>
18 #include <lib-mime/mime.h>
19 #include <lib-sys/unix.h>
21 #include <lib-ui/curses.h>
22 #include <lib-ui/enter.h>
23 #include <lib-ui/menu.h>
33 struct smime_command_context {
34 const char *key; /* %k */
35 const char *cryptalg; /* %a */
36 const char *fname; /* %f */
37 const char *sig_fname; /* %s */
38 const char *certificates; /* %c */
39 const char *intermediates; /* %i */
48 char trust; /* i=Invalid r=revoked e=expired u=unverified v=verified t=trusted */
49 short public; /* 1=public 0=private */
53 char SmimePass[STRING];
54 time_t SmimeExptime = 0; /* when does the cached passphrase expire? */
57 static char SmimeKeyToUse[_POSIX_PATH_MAX] = { 0 };
58 static char SmimeCertToUse[_POSIX_PATH_MAX];
59 static char SmimeIntermediateToUse[_POSIX_PATH_MAX];
63 * Create a format string to be used with scanf.
64 * To use it, write, for instance, MUTT_FORMAT(HUGE_STRING).
66 * See K&R 2nd ed, p. 231 for an explanation.
68 #define _MUTT_FORMAT_2(a,b) "%" a b
69 #define _MUTT_FORMAT_1(a, b) _MUTT_FORMAT_2(#a, b)
70 #define MUTT_FORMAT(a) _MUTT_FORMAT_1(a, "s")
74 * Queries and passphrase handling.
78 /* these are copies from pgp.c */
81 void smime_void_passphrase (void)
83 p_clear(SmimePass, countof(SmimePass));
87 int smime_valid_passphrase (void)
89 time_t now = time (NULL);
91 if (now < SmimeExptime)
92 /* Use cached copy. */
95 smime_void_passphrase ();
97 if (mutt_get_field_unbuffered (_("Enter S/MIME passphrase:"), SmimePass,
98 sizeof (SmimePass), M_PASS) == 0) {
99 SmimeExptime = time (NULL) + SmimeTimeout;
110 * The OpenSSL interface
113 /* This is almost identical to ppgp's invoking interface. */
116 _mutt_fmt_smime_command (char *dest, ssize_t destlen,
117 char op, const char *src, const char *prefix,
118 const char *ifstr, const char *elstr,
119 anytype data, format_flag flags)
122 struct smime_command_context *cctx = data.ptr;
123 int optional = (flags & M_FORMAT_OPTIONAL);
129 char path[_POSIX_PATH_MAX];
130 char buf1[LONG_STRING], buf2[LONG_STRING];
133 m_strcpy(path, sizeof(path), NONULL(SmimeCALocation));
134 mutt_expand_path (path, sizeof (path));
135 mutt_quote_filename (buf1, sizeof (buf1), path);
137 if (stat (path, &sb) != 0 || !S_ISDIR (sb.st_mode))
138 snprintf (buf2, sizeof (buf2), "-CAfile %s", buf1);
140 snprintf (buf2, sizeof (buf2), "-CApath %s", buf1);
142 snprintf (fmt, sizeof (fmt), "%%%ss", prefix);
143 snprintf (dest, destlen, fmt, buf2);
145 else if (!SmimeCALocation)
151 { /* certificate (list) */
153 snprintf (fmt, sizeof (fmt), "%%%ss", prefix);
154 snprintf (dest, destlen, fmt, NONULL (cctx->certificates));
156 else if (!cctx->certificates)
162 { /* intermediate certificates */
164 snprintf (fmt, sizeof (fmt), "%%%ss", prefix);
165 snprintf (dest, destlen, fmt, NONULL (cctx->intermediates));
167 else if (!cctx->intermediates)
173 { /* detached signature */
175 snprintf (fmt, sizeof (fmt), "%%%ss", prefix);
176 snprintf (dest, destlen, fmt, NONULL (cctx->sig_fname));
178 else if (!cctx->sig_fname)
186 snprintf (fmt, sizeof (fmt), "%%%ss", prefix);
187 snprintf (dest, destlen, fmt, NONULL (cctx->key));
195 { /* algorithm for encryption */
197 snprintf (fmt, sizeof (fmt), "%%%ss", prefix);
198 snprintf (dest, destlen, fmt, NONULL (cctx->cryptalg));
206 { /* file to process */
208 snprintf (fmt, sizeof (fmt), "%%%ss", prefix);
209 snprintf (dest, destlen, fmt, NONULL (cctx->fname));
211 else if (!cctx->fname)
221 if (flags & M_FORMAT_OPTIONAL)
222 m_strformat(dest, destlen, 0, optional ? ifstr : elstr,
223 _mutt_fmt_smime_command, data, 0);
230 static void mutt_smime_command (char *d, ssize_t dlen,
231 struct smime_command_context *cctx,
234 m_strformat(d, dlen, 0, fmt, _mutt_fmt_smime_command, cctx, 0);
237 static pid_t smime_invoke (FILE ** smimein, FILE ** smimeout,
238 FILE ** smimeerr, int smimeinfd, int smimeoutfd,
239 int smimeerrfd, const char *fname,
240 const char *sig_fname, const char *cryptalg,
241 const char *key, const char *certificates,
242 const char *intermediates, const char *format)
244 struct smime_command_context cctx;
245 char cmd[HUGE_STRING];
249 if (!format || !*format)
253 cctx.sig_fname = sig_fname;
255 cctx.cryptalg = cryptalg;
256 cctx.certificates = certificates;
257 cctx.intermediates = intermediates;
259 mutt_smime_command (cmd, sizeof (cmd), &cctx, format);
261 return mutt_create_filter_fd (cmd, smimein, smimeout, smimeerr,
262 smimeinfd, smimeoutfd, smimeerrfd);
271 * Key and certificate handling.
277 Search the certificate index for given mailbox.
278 return certificate file name.
281 static void smime_entry (char *s, ssize_t l, MUTTMENU * menu, int num)
283 smime_id *Table = (smime_id *) menu->data;
284 smime_id this = Table[num];
285 const char *truststate;
287 switch (this.trust) {
289 truststate = N_("Trusted ");
292 truststate = N_("Verified ");
295 truststate = N_("Unverified");
298 truststate = N_("Expired ");
301 truststate = N_("Revoked ");
304 truststate = N_("Invalid ");
307 truststate = N_("Unknown ");
310 snprintf (s, l, " 0x%.8X.%i %s %-35.35s %s", this.hash, this.suffix,
311 truststate, this.email, this.nick);
313 snprintf (s, l, " 0x%.8X.%i %-35.35s %s", this.hash, this.suffix,
314 this.email, this.nick);
321 char *smime_ask_for_key (char *prompt, char *mailbox __attribute__((unused)),
326 long cert_num; /* Will contain the number of certificates.
327 * To be able to get it, the .index file will be read twice... */
328 char index_file[_POSIX_PATH_MAX];
330 char buf[LONG_STRING];
331 char fields[5][STRING];
332 int numFields, hash_suffix, done, cur; /* The current entry */
335 char helpstr[HUGE_STRING * 3];
340 prompt = _("Enter keyID: ");
341 snprintf (index_file, sizeof (index_file), "%s/.index",
342 public ? NONULL (SmimeCertificates) : NONULL (SmimeKeys));
344 idx = fopen (index_file, "r");
346 mutt_perror (index_file);
351 while (!feof (idx)) {
352 if (fgets (buf, sizeof (buf), idx))
359 if (mutt_get_field (prompt, qry, sizeof (qry), 0))
361 snprintf (title, sizeof (title),
362 _("S/MIME certificates matching \"%s\"."), qry);
365 idx = fopen (index_file, "r");
367 mutt_perror (index_file);
372 Table = p_new(smime_id, cert_num);
373 while (!feof (idx)) {
375 fscanf (idx, MUTT_FORMAT (STRING) " %x.%i " MUTT_FORMAT (STRING),
376 fields[0], &hash, &hash_suffix, fields[2]);
378 fscanf (idx, MUTT_FORMAT (STRING) " " MUTT_FORMAT (STRING) "\n",
379 fields[3], fields[4]);
381 /* 0=email 1=name 2=nick 3=intermediate 4=trust */
385 /* Check if query matches this certificate */
386 if (!m_stristr(fields[0], qry) && !m_stristr(fields[2], qry))
389 Table[cur].hash = hash;
390 Table[cur].suffix = hash_suffix;
391 m_strcpy(Table[cur].email, sizeof(Table[cur].email), fields[0]);
392 m_strcpy(Table[cur].nick, sizeof(Table[cur].nick), fields[2]);
393 Table[cur].trust = *fields[4];
394 Table[cur].public = public;
400 /* Make Helpstring */
402 mutt_make_help (buf, sizeof (buf), _("Exit "), MENU_SMIME, OP_EXIT);
403 m_strcat(helpstr, sizeof(helpstr), buf);
404 mutt_make_help (buf, sizeof (buf), _("Select "), MENU_SMIME,
405 OP_GENERIC_SELECT_ENTRY);
406 m_strcat(helpstr, sizeof(helpstr), buf);
407 mutt_make_help (buf, sizeof (buf), _("Help"), MENU_SMIME, OP_HELP);
408 m_strcat(helpstr, sizeof(helpstr), buf);
410 /* Create the menu */
411 menu = mutt_new_menu ();
413 menu->make_entry = smime_entry;
414 menu->menu = MENU_SMIME;
415 menu->help = helpstr;
418 /* sorting keys might be done later - TODO */
425 switch (mutt_menuLoop (menu)) {
426 case OP_GENERIC_SELECT_ENTRY:
438 fname = p_new(char, 13); /* Hash + '.' + Suffix + \0 */
439 sprintf (fname, "%.8x.%i", Table[cur].hash, Table[cur].suffix);
444 mutt_menuDestroy (&menu);
446 set_option (OPTNEEDREDRAW);
455 char *smime_get_field_from_db (char *mailbox, char *query, short public,
458 int addr_len, query_len, found = 0, ask = 0, choice = 0;
459 char cert_path[_POSIX_PATH_MAX];
460 char buf[LONG_STRING], prompt[STRING];
461 char fields[5][STRING];
465 char key_trust_level = 0;
468 if (!mailbox && !query)
471 addr_len = mailbox ? m_strlen(mailbox) : 0;
472 query_len = query ? m_strlen(query) : 0;
476 /* index-file format:
477 mailbox certfile label issuer_certfile trust_flags\n
479 certfile is a hash value generated by openssl.
480 Note that this was done according to the OpenSSL
481 specs on their CA-directory.
484 snprintf (cert_path, sizeof (cert_path), "%s/.index",
485 (public ? NONULL (SmimeCertificates) : NONULL (SmimeKeys)));
487 if (!stat (cert_path, &info)) {
488 if ((fp = safe_fopen (cert_path, "r")) == NULL) {
489 mutt_perror (cert_path);
493 while (fgets (buf, sizeof (buf) - 1, fp) != NULL)
494 if (mailbox && !(m_strncasecmp(mailbox, buf, addr_len))) {
495 numFields = sscanf (buf,
496 MUTT_FORMAT (STRING) " " MUTT_FORMAT (STRING) " "
497 MUTT_FORMAT (STRING) " " MUTT_FORMAT (STRING) " "
498 MUTT_FORMAT (STRING) "\n",
499 fields[0], fields[1],
500 fields[2], fields[3], fields[4]);
503 if (mailbox && public &&
505 *fields[4] == 'i' || *fields[4] == 'e' || *fields[4] == 'r'))
509 if (public && *fields[4] == 'u')
510 snprintf (prompt, sizeof (prompt),
512 ("ID %s is unverified. Do you want to use it for %s ?"),
514 else if (public && *fields[4] == 'v')
515 snprintf (prompt, sizeof (prompt),
516 _("Use (untrusted!) ID %s for %s ?"),
519 snprintf (prompt, sizeof (prompt), _("Use ID %s for %s ?"),
523 if (may_ask && (choice = mutt_yesorno (prompt, M_NO)) == -1) {
529 else if (choice == M_NO) {
533 else if (choice == M_YES) {
534 m_strcpy(key, sizeof(key), fields[1]);
541 key_trust_level = *fields[4];
542 m_strcpy(key, sizeof(key), fields[1]);
547 numFields = sscanf (buf,
548 MUTT_FORMAT (STRING) " " MUTT_FORMAT (STRING) " "
549 MUTT_FORMAT (STRING) " " MUTT_FORMAT (STRING) " "
550 MUTT_FORMAT (STRING) "\n",
551 fields[0], fields[1],
552 fields[2], fields[3], fields[4]);
554 /* query = label: return certificate. */
555 if (numFields >= 3 &&
556 !(m_strncasecmp(query, fields[2], query_len))) {
558 m_strcpy(key, sizeof(key), fields[1]);
560 /* query = certificate: return intermediate certificate. */
561 else if (numFields >= 4 &&
562 !(m_strncasecmp(query, fields[1], query_len))) {
564 m_strcpy(key, sizeof(key), fields[3]);
571 if (public && *fields[4] == 'u')
572 snprintf (prompt, sizeof (prompt),
573 _("ID %s is unverified. Do you want to use it for %s ?"),
575 else if (public && *fields[4] == 'v')
576 snprintf (prompt, sizeof (prompt),
577 _("Use (untrusted!) ID %s for %s ?"), fields[1], mailbox);
579 snprintf (prompt, sizeof (prompt), _("Use ID %s for %s ?"), key,
581 choice = mutt_yesorno (prompt, M_NO);
582 if (choice == -1 || choice == M_NO)
585 else if (key_trust_level && may_ask) {
586 if (key_trust_level == 'u') {
587 snprintf (prompt, sizeof (prompt),
588 _("ID %s is unverified. Do you want to use it for %s ?"),
590 choice = mutt_yesorno (prompt, M_NO);
594 else if (key_trust_level == 'v') {
596 ("Warning: You have not yet decided to trust ID %s. (any key to continue)"),
604 /* Note: m_strdup("") returns NULL. */
605 return m_strdup(key);
609 This sets the '*ToUse' variables for an upcoming decryption, where
610 the reuquired key is different from SmimeDefaultKey.
612 static void _smime_getkeys (char *mailbox)
617 k = smime_get_field_from_db (mailbox, NULL, 0, 1);
620 snprintf (buf, sizeof (buf), _("Enter keyID for %s: "), mailbox);
621 k = smime_ask_for_key (buf, mailbox, 0);
625 /* the key used last time. */
626 if (*SmimeKeyToUse &&
627 !m_strcasecmp(k, SmimeKeyToUse + m_strlen(SmimeKeys) + 1)) {
632 smime_void_passphrase ();
634 snprintf (SmimeKeyToUse, sizeof (SmimeKeyToUse), "%s/%s",
635 NONULL (SmimeKeys), k);
637 snprintf (SmimeCertToUse, sizeof (SmimeCertToUse), "%s/%s",
638 NONULL (SmimeCertificates), k);
640 if (m_strcasecmp(k, SmimeDefaultKey))
641 smime_void_passphrase ();
647 if (*SmimeKeyToUse) {
648 if (!m_strcasecmp(SmimeDefaultKey,
649 SmimeKeyToUse + m_strlen(SmimeKeys) + 1))
652 smime_void_passphrase ();
655 snprintf (SmimeKeyToUse, sizeof (SmimeKeyToUse), "%s/%s",
656 NONULL (SmimeKeys), NONULL (SmimeDefaultKey));
658 snprintf (SmimeCertToUse, sizeof (SmimeCertToUse), "%s/%s",
659 NONULL (SmimeCertificates), NONULL (SmimeDefaultKey));
662 void smime_getkeys (ENVELOPE * env)
667 if (option (OPTSDEFAULTDECRYPTKEY) && SmimeDefaultKey && *SmimeDefaultKey) {
668 snprintf (SmimeKeyToUse, sizeof (SmimeKeyToUse), "%s/%s",
669 NONULL (SmimeKeys), SmimeDefaultKey);
671 snprintf (SmimeCertToUse, sizeof (SmimeCertToUse), "%s/%s",
672 NONULL (SmimeCertificates), SmimeDefaultKey);
677 for (t = env->to; !found && t; t = t->next)
678 if (mutt_addr_is_user (t)) {
680 _smime_getkeys (t->mailbox);
682 for (t = env->cc; !found && t; t = t->next)
683 if (mutt_addr_is_user (t)) {
685 _smime_getkeys (t->mailbox);
687 if (!found && (t = mutt_default_from ())) {
688 _smime_getkeys (t->mailbox);
689 address_list_wipe(&t);
693 /* This routine attempts to find the keyids of the recipients of a message.
694 * It returns NULL if any of the keys can not be found.
697 char *smime_findKeys (address_t * to, address_t * cc, address_t * bcc)
699 char *keyID, *keylist = NULL;
700 ssize_t keylist_size = 0;
701 ssize_t keylist_used = 0;
702 address_t *tmp = NULL, *addr = NULL;
703 address_t **last = &tmp;
707 for (i = 0; i < 3; i++) {
722 *last = address_list_dup (p);
724 last = &((*last)->next);
727 rfc822_qualify(tmp, mutt_fqdn(1));
729 address_list_uniq(tmp);
731 for (p = tmp; p; p = p->next) {
732 char buf[LONG_STRING];
736 if ((keyID = smime_get_field_from_db (q->mailbox, NULL, 1, 1)) == NULL) {
737 snprintf (buf, sizeof (buf), _("Enter keyID for %s: "), q->mailbox);
738 keyID = smime_ask_for_key (buf, q->mailbox, 1);
741 mutt_message (_("No (valid) certificate found for %s."), q->mailbox);
743 address_list_wipe(&tmp);
744 address_list_wipe(&addr);
748 keylist_size += m_strlen(keyID) + 2;
749 p_realloc(&keylist, keylist_size);
750 sprintf (keylist + keylist_used, "%s\n", keyID);
751 keylist_used = m_strlen(keylist);
753 address_list_wipe(&addr);
756 address_list_wipe(&tmp);
765 static int smime_handle_cert_email (char *certificate, char *mailbox,
766 int copy, char ***buffer, int *num)
768 FILE *fpout = NULL, *fperr = NULL;
769 char tmpfname[_POSIX_PATH_MAX];
771 int ret = -1, count = 0;
774 fperr = m_tempfile (tmpfname, sizeof(tmpfname), NONULL(Tempdir), NULL);
776 mutt_perror (tmpfname);
779 mutt_unlink (tmpfname);
781 fpout = m_tempfile (tmpfname, sizeof(tmpfname), NONULL(Tempdir), NULL);
784 mutt_perror (tmpfname);
787 mutt_unlink (tmpfname);
789 if ((thepid = smime_invoke (NULL, NULL, NULL,
790 -1, fileno (fpout), fileno (fperr),
791 certificate, NULL, NULL, NULL, NULL, NULL,
792 SmimeGetCertEmailCommand)) == -1) {
793 mutt_message (_("Error: unable to create OpenSSL subprocess!"));
799 mutt_wait_filter (thepid);
807 while ((fgets (email, sizeof (email), fpout))) {
808 *(email + m_strlen(email) - 1) = '\0';
809 if (m_strncasecmp(email, mailbox, m_strlen(mailbox)) == 0)
812 ret = ret < 0 ? 0 : ret;
818 mutt_copy_stream (fperr, stdout);
819 mutt_any_key_to_continue (_
820 ("Error: unable to create OpenSSL subprocess!"));
828 if (copy && buffer && num) {
830 *buffer = p_new(char *, count);
834 while ((fgets (email, sizeof (email), fpout))) {
835 *(email + m_strlen(email) - 1) = '\0';
836 (*buffer)[count] = p_dupstr(email, m_strlen(email));
851 static char *smime_extract_certificate (char *infile)
853 FILE *fpout = NULL, *fperr = NULL;
854 char pk7out[_POSIX_PATH_MAX], certfile[_POSIX_PATH_MAX];
855 char tmpfname[_POSIX_PATH_MAX];
860 fperr = m_tempfile (tmpfname, sizeof(tmpfname), NONULL(Tempdir), NULL);
862 mutt_perror (tmpfname);
865 mutt_unlink (tmpfname);
867 fpout = m_tempfile (pk7out, sizeof(tmpfname), NONULL(Tempdir), NULL);
870 mutt_perror (pk7out);
874 /* Step 1: Convert the signature to a PKCS#7 structure, as we can't
875 extract the full set of certificates directly.
877 if ((thepid = smime_invoke (NULL, NULL, NULL,
878 -1, fileno (fpout), fileno (fperr),
879 infile, NULL, NULL, NULL, NULL, NULL,
880 SmimePk7outCommand)) == -1) {
881 mutt_any_key_to_continue (_
882 ("Error: unable to create OpenSSL subprocess!"));
885 mutt_unlink (pk7out);
889 mutt_wait_filter (thepid);
897 empty = (fgetc (fpout) == EOF);
902 mutt_perror (pk7out);
903 mutt_copy_stream (fperr, stdout);
905 mutt_unlink (pk7out);
909 fpout = m_tempfile (certfile, sizeof(certfile), NONULL(Tempdir), NULL);
912 mutt_unlink (pk7out);
913 mutt_perror (certfile);
917 /* Step 2: Extract the certificates from a PKCS#7 structure.
919 if ((thepid = smime_invoke (NULL, NULL, NULL,
920 -1, fileno (fpout), fileno (fperr),
921 pk7out, NULL, NULL, NULL, NULL, NULL,
922 SmimeGetCertCommand)) == -1) {
923 mutt_any_key_to_continue (_
924 ("Error: unable to create OpenSSL subprocess!"));
927 mutt_unlink (pk7out);
928 mutt_unlink (certfile);
932 mutt_wait_filter (thepid);
934 mutt_unlink (pk7out);
940 empty = (fgetc (fpout) == EOF);
942 mutt_copy_stream (fperr, stdout);
945 mutt_unlink (certfile);
952 return m_strdup(certfile);
955 static char *smime_extract_signer_certificate (char *infile)
957 FILE *fpout = NULL, *fperr = NULL;
958 char pk7out[_POSIX_PATH_MAX], certfile[_POSIX_PATH_MAX];
959 char tmpfname[_POSIX_PATH_MAX];
963 fperr = m_tempfile (tmpfname, sizeof(tmpfname), NONULL(Tempdir), NULL);
965 mutt_perror (tmpfname);
968 mutt_unlink (tmpfname);
970 m_tempfile (certfile, sizeof(certfile), NONULL(Tempdir), NULL);
973 mutt_perror (certfile);
977 /* Extract signer's certificate
979 if ((thepid = smime_invoke (NULL, NULL, NULL,
980 -1, -1, fileno (fperr),
981 infile, NULL, NULL, NULL, certfile, NULL,
982 SmimeGetSignerCertCommand)) == -1) {
983 mutt_any_key_to_continue (_
984 ("Error: unable to create OpenSSL subprocess!"));
987 mutt_unlink (pk7out);
988 mutt_unlink (certfile);
992 mutt_wait_filter (thepid);
998 empty = (fgetc (fpout) == EOF);
1003 mutt_copy_stream (fperr, stdout);
1004 mutt_any_key_to_continue (NULL);
1006 mutt_unlink (certfile);
1012 return m_strdup(certfile);
1015 /* Add a certificate and update index file (externally). */
1017 void smime_invoke_import (char *infile, char *mailbox __attribute__ ((unused)))
1019 char tmpfname[_POSIX_PATH_MAX], *certfile = NULL, buf[STRING];
1020 FILE *smimein = NULL, *fpout = NULL, *fperr = NULL;
1023 fperr = m_tempfile (tmpfname, sizeof(tmpfname), NONULL(Tempdir), NULL);
1025 mutt_perror (tmpfname);
1028 mutt_unlink (tmpfname);
1030 fpout = m_tempfile (tmpfname, sizeof(tmpfname), NONULL(Tempdir), NULL);
1033 mutt_perror (tmpfname);
1036 mutt_unlink (tmpfname);
1039 if (option (OPTASKCERTLABEL))
1040 mutt_get_field ("Label for certificate:", buf, sizeof (buf), 0);
1043 if ((certfile = smime_extract_certificate (infile))) {
1046 if ((thepid = smime_invoke (&smimein, NULL, NULL,
1047 -1, fileno (fpout), fileno (fperr),
1048 certfile, NULL, NULL, NULL, NULL, NULL,
1049 SmimeImportCertCommand)) == -1) {
1050 mutt_message (_("Error: unable to create OpenSSL subprocess!"));
1053 fputs (buf, smimein);
1054 fputc ('\n', smimein);
1057 mutt_wait_filter (thepid);
1059 mutt_unlink (certfile);
1060 p_delete(&certfile);
1068 mutt_copy_stream (fpout, stdout);
1069 mutt_copy_stream (fperr, stdout);
1075 int smime_verify_sender (HEADER * h)
1077 char *mbox = NULL, *certfile, tempfname[_POSIX_PATH_MAX];
1081 fpout = m_tempfile (tempfname, sizeof(tempfname), NONULL(Tempdir), NULL);
1083 mutt_perror (_("Can't create temporary file"));
1087 if (h->security & ENCRYPT)
1088 mutt_copy_message (fpout, Context, h,
1089 M_CM_DECODE_CRYPT & M_CM_DECODE_SMIME,
1090 CH_MIME | CH_WEED | CH_NONEWLINE);
1092 mutt_copy_message (fpout, Context, h, 0, 0);
1098 h->env->from = mutt_expand_aliases (h->env->from);
1099 mbox = h->env->from->mailbox;
1101 else if (h->env->sender) {
1102 h->env->sender = mutt_expand_aliases (h->env->sender);
1103 mbox = h->env->sender->mailbox;
1107 if ((certfile = smime_extract_signer_certificate (tempfname))) {
1108 mutt_unlink (tempfname);
1109 if (smime_handle_cert_email (certfile, mbox, 0, NULL, NULL)) {
1111 mutt_any_key_to_continue (NULL);
1115 mutt_unlink (certfile);
1116 p_delete(&certfile);
1119 mutt_any_key_to_continue (_("no certfile"));
1122 mutt_any_key_to_continue (_("no mbox"));
1124 mutt_unlink (tempfname);
1137 * Creating S/MIME - bodies.
1144 pid_t smime_invoke_encrypt (FILE ** smimein, FILE ** smimeout,
1145 FILE ** smimeerr, int smimeinfd, int smimeoutfd,
1146 int smimeerrfd, const char *fname,
1149 return smime_invoke (smimein, smimeout, smimeerr,
1150 smimeinfd, smimeoutfd, smimeerrfd,
1151 fname, NULL, SmimeCryptAlg, NULL, uids, NULL,
1152 SmimeEncryptCommand);
1157 pid_t smime_invoke_sign (FILE ** smimein, FILE ** smimeout, FILE ** smimeerr,
1158 int smimeinfd, int smimeoutfd, int smimeerrfd,
1161 return smime_invoke (smimein, smimeout, smimeerr, smimeinfd, smimeoutfd,
1162 smimeerrfd, fname, NULL, NULL, SmimeKeyToUse,
1163 SmimeCertToUse, SmimeIntermediateToUse,
1170 BODY *smime_build_smime_entity (BODY * a, char *certlist)
1172 char buf[LONG_STRING], certfile[LONG_STRING];
1173 char tempfile[_POSIX_PATH_MAX], smimeerrfile[_POSIX_PATH_MAX];
1174 char smimeinfile[_POSIX_PATH_MAX];
1175 char *cert_start = certlist, *cert_end = certlist;
1176 FILE *smimein = NULL, *smimeerr = NULL, *fpout = NULL, *fptmp = NULL;
1181 fpout = m_tempfile (tempfile, sizeof(tempfile), NONULL(Tempdir), NULL);
1183 mutt_perror (_("Can't create temporary file"));
1187 smimeerr = m_tempfile (smimeerrfile, sizeof(smimeerrfile), NONULL(Tempdir), NULL);
1189 mutt_perror (smimeerrfile);
1191 mutt_unlink (tempfile);
1194 mutt_unlink (smimeerrfile);
1196 fptmp = m_tempfile (smimeinfile, sizeof(smimeinfile), NONULL(Tempdir), NULL);
1198 mutt_perror (smimeinfile);
1199 mutt_unlink (tempfile);
1201 m_fclose(&smimeerr);
1207 int off = m_strlen(certfile);
1209 while (*++cert_end && *cert_end != '\n');
1213 snprintf (certfile + off, sizeof (certfile) - off, " %s/%s",
1214 NONULL (SmimeCertificates), cert_start);
1216 cert_start = cert_end;
1220 /* write a MIME entity */
1221 mutt_write_mime_header (a, fptmp);
1222 fputc ('\n', fptmp);
1223 mutt_write_mime_body (a, fptmp);
1227 smime_invoke_encrypt (&smimein, NULL, NULL, -1,
1228 fileno (fpout), fileno (smimeerr),
1229 smimeinfile, certfile)) == -1) {
1230 m_fclose(&smimeerr);
1231 mutt_unlink (smimeinfile);
1232 mutt_unlink (certfile);
1238 mutt_wait_filter (thepid);
1239 mutt_unlink (smimeinfile);
1240 mutt_unlink (certfile);
1244 empty = (fgetc (fpout) == EOF);
1249 while (fgets (buf, sizeof (buf) - 1, smimeerr) != NULL) {
1251 fputs (buf, stdout);
1253 m_fclose(&smimeerr);
1255 /* pause if there is any error output from SMIME */
1257 mutt_any_key_to_continue (NULL);
1260 /* fatal error while trying to encrypt message */
1262 mutt_any_key_to_continue _("No output from OpenSSL..");
1264 mutt_unlink (tempfile);
1269 t->type = TYPEAPPLICATION;
1270 t->subtype = m_strdup("x-pkcs7-mime");
1271 parameter_setval(&t->parameter, "name", "smime.p7m");
1272 parameter_setval(&t->parameter, "smime-type", "enveloped-data");
1273 t->encoding = ENCBASE64; /* The output of OpenSSL SHOULD be binary */
1275 t->disposition = DISPATTACH;
1276 t->d_filename = m_strdup("smime.p7m");
1277 t->filename = m_strdup(tempfile);
1278 t->unlink = 1; /*delete after sending the message */
1288 BODY *smime_sign_message (BODY * a)
1291 char buffer[LONG_STRING];
1292 char signedfile[_POSIX_PATH_MAX], filetosign[_POSIX_PATH_MAX];
1293 FILE *smimein = NULL, *smimeout = NULL, *smimeerr = NULL, *sfp = NULL;
1297 char *intermediates = smime_get_field_from_db (NULL, SmimeDefaultKey, 1, 1);
1299 if (!intermediates) {
1300 mutt_message (_("Warning: Intermediate certificate not found."));
1301 intermediates = SmimeDefaultKey; /* so openssl won't complain in any case */
1304 convert_to_7bit (a); /* Signed data _must_ be in 7-bit format. */
1306 sfp = m_tempfile (filetosign, sizeof(filetosign), NONULL(Tempdir), NULL);
1308 mutt_perror (filetosign);
1312 smimeout = m_tempfile (signedfile, sizeof(signedfile), NONULL(Tempdir), NULL);
1314 mutt_perror (signedfile);
1316 mutt_unlink (filetosign);
1320 mutt_write_mime_header (a, sfp);
1322 mutt_write_mime_body (a, sfp);
1327 snprintf (SmimeKeyToUse, sizeof (SmimeKeyToUse), "%s/%s",
1328 NONULL (SmimeKeys), SmimeDefaultKey);
1330 snprintf (SmimeCertToUse, sizeof (SmimeCertToUse), "%s/%s",
1331 NONULL (SmimeCertificates), SmimeDefaultKey);
1333 snprintf (SmimeIntermediateToUse, sizeof (SmimeIntermediateToUse), "%s/%s",
1334 NONULL (SmimeCertificates), intermediates);
1338 if ((thepid = smime_invoke_sign (&smimein, NULL, &smimeerr,
1339 -1, fileno (smimeout), -1,
1340 filetosign)) == -1) {
1341 mutt_perror (_("Can't open OpenSSL subprocess!"));
1343 m_fclose(&smimeout);
1344 mutt_unlink (signedfile);
1345 mutt_unlink (filetosign);
1348 fputs (SmimePass, smimein);
1349 fputc ('\n', smimein);
1353 mutt_wait_filter (thepid);
1355 /* check for errors from OpenSSL */
1359 while (fgets (buffer, sizeof (buffer) - 1, smimeerr) != NULL) {
1361 fputs (buffer, stdout);
1363 m_fclose(&smimeerr);
1368 empty = (fgetc (smimeout) == EOF);
1369 m_fclose(&smimeout);
1371 mutt_unlink (filetosign);
1375 mutt_any_key_to_continue (NULL);
1378 mutt_any_key_to_continue _("No output from OpenSSL...");
1380 mutt_unlink (signedfile);
1381 return (NULL); /* fatal error while signing */
1385 t->type = TYPEMULTIPART;
1386 t->subtype = m_strdup("signed");
1387 t->encoding = ENC7BIT;
1389 t->disposition = DISPINLINE;
1391 parameter_set_boundary(&t->parameter);
1392 /* check if this can be extracted from private key somehow.... */
1393 parameter_setval(&t->parameter, "micalg", "sha1");
1394 parameter_setval(&t->parameter, "protocol",
1395 "application/x-pkcs7-signature");
1400 t->parts->next = body_new();
1402 t->type = TYPEAPPLICATION;
1403 t->subtype = m_strdup("x-pkcs7-signature");
1404 t->filename = m_strdup(signedfile);
1405 t->d_filename = m_strdup("smime.p7s");
1407 t->disposition = DISPATTACH;
1408 t->encoding = ENCBASE64;
1409 t->unlink = 1; /* ok to remove this file after sending. */
1417 * Handling S/MIME - bodies.
1422 pid_t smime_invoke_verify (FILE ** smimein, FILE ** smimeout,
1423 FILE ** smimeerr, int smimeinfd, int smimeoutfd,
1424 int smimeerrfd, const char *fname,
1425 const char *sig_fname, int opaque)
1427 return smime_invoke (smimein, smimeout, smimeerr, smimeinfd, smimeoutfd,
1428 smimeerrfd, fname, sig_fname, NULL, NULL, NULL, NULL,
1429 (opaque ? SmimeVerifyOpaqueCommand :
1430 SmimeVerifyCommand));
1435 pid_t smime_invoke_decrypt (FILE ** smimein, FILE ** smimeout,
1436 FILE ** smimeerr, int smimeinfd, int smimeoutfd,
1437 int smimeerrfd, const char *fname)
1439 return smime_invoke (smimein, smimeout, smimeerr, smimeinfd, smimeoutfd,
1440 smimeerrfd, fname, NULL, NULL, SmimeKeyToUse,
1441 SmimeCertToUse, NULL, SmimeDecryptCommand);
1446 int smime_verify_one (BODY * sigbdy, STATE * s, const char *tempfile)
1448 char signedfile[_POSIX_PATH_MAX], smimeerrfile[_POSIX_PATH_MAX];
1449 FILE *fp = NULL, *smimeout = NULL, *smimeerr = NULL;
1454 ssize_t tmplength = 0;
1455 int origType = sigbdy->type;
1456 char *savePrefix = NULL;
1459 snprintf (signedfile, sizeof (signedfile), "%s.sig", tempfile);
1461 /* decode to a tempfile, saving the original destination */
1463 if ((s->fpout = safe_fopen (signedfile, "w")) == NULL) {
1464 mutt_perror (signedfile);
1467 /* decoding the attachment changes the size and offset, so save a copy
1468 * of the "real" values now, and restore them after processing
1470 tmplength = sigbdy->length;
1471 tmpoffset = sigbdy->offset;
1473 /* if we are decoding binary bodies, we don't want to prefix each
1474 * line with the prefix or else the data will get corrupted.
1476 savePrefix = s->prefix;
1479 mutt_decode_attachment (sigbdy, s);
1481 sigbdy->length = ftello (s->fpout);
1483 m_fclose(&s->fpout);
1485 /* restore final destination and substitute the tempfile for input */
1488 s->fpin = fopen (signedfile, "r");
1490 /* restore the prefix */
1491 s->prefix = savePrefix;
1493 sigbdy->type = origType;
1495 smimeerr = m_tempfile(smimeerrfile, sizeof(smimeerrfile), NONULL(Tempdir), NULL);
1497 mutt_perror (smimeerrfile);
1498 mutt_unlink (signedfile);
1502 crypt_current_time (s, "OpenSSL");
1504 if ((thepid = smime_invoke_verify (NULL, &smimeout, NULL,
1505 -1, -1, fileno (smimeerr),
1506 tempfile, signedfile, 0)) != -1) {
1507 m_fclose(&smimeout);
1509 if (mutt_wait_filter (thepid))
1519 line = mutt_read_line (line, &linelen, smimeerr, &lineno);
1520 if (linelen && !m_strcasecmp(line, "verification successful"))
1529 mutt_copy_stream (smimeerr, s->fpout);
1530 m_fclose(&smimeerr);
1532 state_attach_puts (_("[-- End of OpenSSL output --]\n\n"), s);
1534 mutt_unlink (signedfile);
1535 mutt_unlink (smimeerrfile);
1537 sigbdy->length = tmplength;
1538 sigbdy->offset = tmpoffset;
1540 /* restore the original source stream */
1553 This handles application/pkcs7-mime which can either be a signed
1554 or an encrypted message.
1557 static BODY *smime_handle_entity (BODY * m, STATE * s, FILE * outFile)
1562 char buf[HUGE_STRING];
1563 char outfile[_POSIX_PATH_MAX], errfile[_POSIX_PATH_MAX];
1564 char tmpfname[_POSIX_PATH_MAX];
1565 char tmptmpfname[_POSIX_PATH_MAX];
1566 FILE *smimeout = NULL, *smimein = NULL, *smimeerr = NULL;
1567 FILE *tmpfp = NULL, *tmpfp_buffer = NULL, *fpout = NULL;
1571 unsigned int type = mutt_is_application_smime (m);
1573 if (!(type & APPLICATION_SMIME))
1576 smimeout = m_tempfile (outfile, sizeof(outfile), NONULL(Tempdir), NULL);
1578 mutt_perror (outfile);
1582 smimeerr = m_tempfile(errfile, sizeof(errfile), NONULL(Tempdir), NULL);
1584 mutt_perror (errfile);
1585 m_fclose(&smimeout);
1588 mutt_unlink (errfile);
1590 tmpfp = m_tempfile (tmpfname, sizeof(tmpfname), NONULL(Tempdir), NULL);
1592 mutt_perror (tmpfname);
1593 m_fclose(&smimeout);
1594 m_fclose(&smimeerr);
1598 fseeko (s->fpin, m->offset, 0);
1599 last_pos = m->offset;
1601 mutt_copy_bytes (s->fpin, tmpfp, m->length);
1604 if ((type & ENCRYPT) &&
1605 (thepid = smime_invoke_decrypt (&smimein, NULL, NULL, -1,
1606 fileno (smimeout), fileno (smimeerr),
1608 m_fclose(&smimeout);
1609 mutt_unlink (tmpfname);
1610 if (s->flags & M_DISPLAY)
1611 state_attach_puts (_("[-- Error: unable to create OpenSSL subprocess! --]\n"), s);
1614 else if ((type & SIGNOPAQUE) &&
1615 (thepid = smime_invoke_verify (&smimein, NULL, NULL, -1,
1617 fileno (smimeerr), NULL, tmpfname,
1618 SIGNOPAQUE)) == -1) {
1619 m_fclose(&smimeout);
1620 mutt_unlink (tmpfname);
1621 if (s->flags & M_DISPLAY)
1622 state_attach_puts (_("[-- Error: unable to create OpenSSL subprocess! --]\n"), s);
1627 if (type & ENCRYPT) {
1628 if (!smime_valid_passphrase ())
1629 smime_void_passphrase ();
1630 fputs (SmimePass, smimein);
1631 fputc ('\n', smimein);
1636 mutt_wait_filter (thepid);
1637 mutt_unlink (tmpfname);
1640 if (s->flags & M_DISPLAY) {
1643 if ((c = fgetc (smimeerr)) != EOF) {
1644 ungetc (c, smimeerr);
1646 crypt_current_time (s, "OpenSSL");
1647 mutt_copy_stream (smimeerr, s->fpout);
1648 state_attach_puts (_("[-- End of OpenSSL output --]\n\n"), s);
1652 state_attach_puts (_("[-- The following data is S/MIME"
1653 " encrypted --]\n"), s);
1655 state_attach_puts (_("[-- The following data is S/MIME signed --]\n"),
1666 fpout = m_tempfile (tmptmpfname, sizeof(tmptmpfname), NONULL(Tempdir), NULL);
1668 mutt_perror (tmptmpfname);
1669 m_fclose(&smimeout);
1673 while (fgets (buf, sizeof (buf) - 1, smimeout) != NULL) {
1674 len = m_strlen(buf);
1675 if (len > 1 && buf[len - 2] == '\r') {
1676 buf[len - 2] = '\n';
1677 buf[len - 1] = '\0';
1685 if ((p = mutt_read_mime_header (fpout, 0)) != NULL) {
1686 fstat (fileno (fpout), &info);
1687 p->length = info.st_size - p->offset;
1689 mutt_parse_part (fpout, p);
1692 tmpfp_buffer = s->fpin;
1694 mutt_body_handler (p, s);
1695 s->fpin = tmpfp_buffer;
1699 m_fclose(&smimeout);
1700 mutt_unlink (outfile);
1704 mutt_unlink (tmptmpfname);
1709 if (s->flags & M_DISPLAY) {
1711 state_attach_puts (_("\n[-- End of S/MIME encrypted data. --]\n"), s);
1713 state_attach_puts (_("\n[-- End of S/MIME signed data. --]\n"), s);
1716 if (type & SIGNOPAQUE) {
1723 line = mutt_read_line (line, &linelen, smimeerr, &lineno);
1724 if (linelen && !m_strcasecmp(line, "verification successful"))
1729 m->goodsig = p->goodsig;
1730 m->badsig = p->badsig;
1732 m_fclose(&smimeerr);
1741 int smime_decrypt_mime (FILE * fpin, FILE ** fpout, BODY * b, BODY ** cur)
1745 char tempfile[_POSIX_PATH_MAX];
1747 long tmpoffset = b->offset;
1748 ssize_t tmplength = b->length;
1749 int origType = b->type;
1753 if (!mutt_is_application_smime (b))
1761 fseeko (s.fpin, b->offset, 0);
1763 tmpfp = m_tempfile (tempfile, sizeof(tempfile), NONULL(Tempdir), NULL);
1765 mutt_perror (_("Can't create temporary file"));
1769 mutt_unlink (tempfile);
1771 mutt_decode_attachment (b, &s);
1773 b->length = ftello (s.fpout);
1779 *fpout = m_tempfile (tempfile, sizeof(tempfile), NONULL(Tempdir), NULL);
1781 mutt_perror (_("Can't create temporary file"));
1785 mutt_unlink (tempfile);
1787 if (!(*cur = smime_handle_entity (b, &s, *fpout))) {
1792 (*cur)->goodsig = b->goodsig;
1793 (*cur)->badsig = b->badsig;
1797 b->length = tmplength;
1798 b->offset = tmpoffset;
1807 int smime_application_smime_handler (BODY * m, STATE * s)
1809 return smime_handle_entity (m, s, NULL) ? 0 : -1;
1812 int smime_send_menu (HEADER * msg, int *redraw)
1816 switch (mutt_multi_choice
1817 (_("S/MIME (e)ncrypt, (s)ign, encrypt (w)ith, sign (a)s, (b)oth, or (c)lear? "),
1819 case 1: /* (e)ncrypt */
1820 msg->security |= ENCRYPT;
1821 msg->security &= ~SIGN;
1824 case 3: /* encrypt (w)ith */
1827 msg->security |= ENCRYPT;
1830 /* I use "dra" because "123" is recognized anyway */
1831 switch (mutt_multi_choice (_("Choose algorithm family:"
1832 " 1: DES, 2: RC2, 3: AES,"
1833 " or (c)lear? "), _("drac"))) {
1835 switch (choice = mutt_multi_choice (_("1: DES, 2: Triple-DES "),
1838 m_strreplace(&SmimeCryptAlg, "des");
1841 m_strreplace(&SmimeCryptAlg, "des3");
1847 switch (choice = mutt_multi_choice (_("1: RC2-40, 2: RC2-64, 3: RC2-128 "),
1850 m_strreplace(&SmimeCryptAlg, "rc2-40");
1853 m_strreplace(&SmimeCryptAlg, "rc2-64");
1856 m_strreplace(&SmimeCryptAlg, "rc2-128");
1862 switch (choice = mutt_multi_choice (_("1: AES128, 2: AES192, 3: AES256 "),
1865 m_strreplace(&SmimeCryptAlg, "aes128");
1868 m_strreplace(&SmimeCryptAlg, "aes192");
1871 m_strreplace(&SmimeCryptAlg, "aes256");
1876 case 4: /* (c)lear */
1877 p_delete(&SmimeCryptAlg);
1879 case -1: /* Ctrl-G or Enter */
1883 } while (choice == -1);
1887 case 2: /* (s)ign */
1889 if (!SmimeDefaultKey)
1890 mutt_message (_("Can't sign: No key specified. Use Sign As."));
1893 msg->security |= SIGN;
1894 msg->security &= ~ENCRYPT;
1898 case 4: /* sign (a)s */
1900 if ((p = smime_ask_for_key (_("Sign as: "), NULL, 0))) {
1901 m_strreplace(&SmimeDefaultKey, p);
1903 msg->security |= SIGN;
1905 /* probably need a different passphrase */
1906 crypt_smime_void_passphrase ();
1909 *redraw = REDRAW_FULL;
1912 case 5: /* (b)oth */
1913 msg->security |= (ENCRYPT | SIGN);
1916 case 6: /* (f)orget it */
1917 case 7: /* (c)lear */
1922 if (msg->security && msg->security != APPLICATION_SMIME)
1923 msg->security |= APPLICATION_SMIME;
1927 return (msg->security);