2 * Copyright (C) 1996-2000,2002 Michael R. Elkins <me@mutt.org>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
29 #include "mutt_crypt.h"
30 #include "mutt_idna.h"
35 #include <unistd.h> /* needed for SEEK_SET under SunOS 4.1.4 */
37 static int address_header_decode (char **str);
38 static int copy_delete_attach (BODY * b, FILE * fpin, FILE * fpout,
41 /* Ok, the only reason for not merging this with mutt_copy_header()
42 * below is to avoid creating a HEADER structure in message_handler().
45 mutt_copy_hdr (FILE * in, FILE * out, long off_start, long off_end, int flags,
51 char buf[STRING]; /* should be long enough to get most fields in one pass */
57 char *this_one = NULL;
60 if (ftell (in) != off_start)
61 fseek (in, off_start, 0);
67 (CH_REORDER | CH_WEED | CH_MIME | CH_DECODE | CH_PREFIX |
68 CH_WEED_DELIVERED)) == 0) {
69 /* Without these flags to complicate things
70 * we can do a more efficient line to line copying
72 while (ftell (in) < off_end) {
73 nl = strchr (buf, '\n');
75 if ((fgets (buf, sizeof (buf), in)) == NULL)
78 /* Is it the begining of a header? */
79 if (nl && buf[0] != ' ' && buf[0] != '\t') {
81 if (!from && mutt_strncmp ("From ", buf, 5) == 0) {
82 if ((flags & CH_FROM) == 0)
86 else if (flags & (CH_NOQFROM) &&
87 ascii_strncasecmp (">From ", buf, 6) == 0)
90 else if (buf[0] == '\n' || (buf[0] == '\r' && buf[1] == '\n'))
91 break; /* end of header */
93 if ((flags & (CH_UPDATE | CH_XMIT | CH_NOSTATUS)) &&
94 (ascii_strncasecmp ("Status:", buf, 7) == 0 ||
95 ascii_strncasecmp ("X-Status:", buf, 9) == 0))
97 if ((flags & (CH_UPDATE_LEN | CH_XMIT | CH_NOLEN)) &&
98 (ascii_strncasecmp ("Content-Length:", buf, 15) == 0 ||
99 ascii_strncasecmp ("Lines:", buf, 6) == 0))
101 if ((flags & CH_UPDATE_REFS) &&
102 ascii_strncasecmp ("References:", buf, 11) == 0)
104 if ((flags & CH_UPDATE_IRT) &&
105 ascii_strncasecmp ("In-Reply-To:", buf, 12) == 0)
110 if (!ignore && fputs (buf, out) == EOF)
120 /* We are going to read and collect the headers in an array
121 * so we are able to do re-ordering.
122 * First count the number of entries in the array
124 if (flags & CH_REORDER) {
125 for (t = HeaderOrderList; t; t = t->next) {
126 dprint (1, (debugfile, "Reorder list: %s\n", t->data));
131 dprint (1, (debugfile, "WEED is %s\n", (flags & CH_WEED) ? "Set" : "Not"));
133 headers = safe_calloc (hdr_count, sizeof (char *));
135 /* Read all the headers into the array */
136 while (ftell (in) < off_end) {
137 nl = strchr (buf, '\n');
140 if ((fgets (buf, sizeof (buf), in)) == NULL)
143 /* Is it the begining of a header? */
144 if (nl && buf[0] != ' ' && buf[0] != '\t') {
145 /* Do we have anything pending? */
147 if (flags & CH_DECODE) {
148 if (!address_header_decode (&this_one))
149 rfc2047_decode (&this_one);
153 headers[x] = this_one;
155 safe_realloc (&headers[x], mutt_strlen (headers[x]) +
156 mutt_strlen (this_one) + sizeof (char));
157 strcat (headers[x], this_one); /* __STRCAT_CHECKED__ */
166 if (!from && mutt_strncmp ("From ", buf, 5) == 0) {
167 if ((flags & CH_FROM) == 0)
169 this_is_from = from = 1;
171 else if (buf[0] == '\n' || (buf[0] == '\r' && buf[1] == '\n'))
172 break; /* end of header */
174 /* note: CH_FROM takes precedence over header weeding. */
175 if (!((flags & CH_FROM) && (flags & CH_FORCE_FROM) && this_is_from) &&
177 mutt_matches_ignore (buf, Ignore) &&
178 !mutt_matches_ignore (buf, UnIgnore))
180 if ((flags & CH_WEED_DELIVERED) &&
181 ascii_strncasecmp ("Delivered-To:", buf, 13) == 0)
183 if ((flags & (CH_UPDATE | CH_XMIT | CH_NOSTATUS)) &&
184 (ascii_strncasecmp ("Status:", buf, 7) == 0 ||
185 ascii_strncasecmp ("X-Status:", buf, 9) == 0))
187 if ((flags & (CH_UPDATE_LEN | CH_XMIT | CH_NOLEN)) &&
188 (ascii_strncasecmp ("Content-Length:", buf, 15) == 0 ||
189 ascii_strncasecmp ("Lines:", buf, 6) == 0))
191 if ((flags & CH_MIME) &&
192 ((ascii_strncasecmp ("content-", buf, 8) == 0 &&
193 (ascii_strncasecmp ("transfer-encoding:", buf + 8, 18) == 0 ||
194 ascii_strncasecmp ("type:", buf + 8, 5) == 0)) ||
195 ascii_strncasecmp ("mime-version:", buf, 13) == 0))
197 if ((flags & CH_UPDATE_REFS) &&
198 ascii_strncasecmp ("References:", buf, 11) == 0)
200 if ((flags & CH_UPDATE_IRT) &&
201 ascii_strncasecmp ("In-Reply-To:", buf, 12) == 0)
204 /* Find x -- the array entry where this header is to be saved */
205 if (flags & CH_REORDER) {
206 for (t = HeaderOrderList, x = 0; (t); t = t->next, x++) {
207 if (!ascii_strncasecmp (buf, t->data, mutt_strlen (t->data))) {
208 dprint (2, (debugfile, "Reorder: %s matches %s\n", t->data, buf));
215 } /* If beginning of header */
219 (debugfile, "Reorder: x = %d; hdr_count = %d\n", x, hdr_count));
221 this_one = safe_strdup (buf);
223 safe_realloc (&this_one,
224 mutt_strlen (this_one) + mutt_strlen (buf) +
226 strcat (this_one, buf); /* __STRCAT_CHECKED__ */
229 } /* while (ftell (in) < off_end) */
231 /* Do we have anything pending? -- XXX, same code as in above in the loop. */
233 if (flags & CH_DECODE) {
234 if (!address_header_decode (&this_one))
235 rfc2047_decode (&this_one);
239 headers[x] = this_one;
241 safe_realloc (&headers[x], mutt_strlen (headers[x]) +
242 mutt_strlen (this_one) + sizeof (char));
243 strcat (headers[x], this_one); /* __STRCAT_CHECKED__ */
250 /* Now output the headers in order */
251 for (x = 0; x < hdr_count; x++) {
254 if (flags & CH_DECODE)
255 rfc2047_decode (&headers[x]);
258 /* We couldn't do the prefixing when reading because RFC 2047
259 * decoding may have concatenated lines.
261 if (flags & CH_PREFIX) {
262 char *ch = headers[x];
263 int print_prefix = 1;
267 if (fputs (prefix, out) == EOF) {
274 if (*ch == '\n' && ch[1])
277 if (putc (*ch++, out) == EOF) {
286 if (fputs (headers[x], out) == EOF) {
294 /* Free in a separate loop to be sure that all headers are freed
295 * in case of error. */
296 for (x = 0; x < hdr_count; x++)
306 CH_DECODE RFC2047 header decoding
307 CH_FROM retain the "From " message separator
308 CH_FORCE_FROM give CH_FROM precedence over CH_WEED
309 CH_MIME ignore MIME fields
310 CH_NOLEN don't write Content-Length: and Lines:
311 CH_NONEWLINE don't output a newline after the header
312 CH_NOSTATUS ignore the Status: and X-Status:
313 CH_PREFIX quote header with $indent_str
314 CH_REORDER output header in order specified by `hdr_order'
315 CH_TXTPLAIN generate text/plain MIME headers [hack alert.]
316 CH_UPDATE write new Status: and X-Status:
317 CH_UPDATE_LEN write new Content-Length: and Lines:
318 CH_XMIT ignore Lines: and Content-Length:
319 CH_WEED do header weeding
320 CH_NOQFROM ignore ">From " line
321 CH_UPDATE_IRT update the In-Reply-To: header
322 CH_UPDATE_REFS update the References: header
325 string to use if CH_PREFIX is set
329 mutt_copy_header (FILE * in, HEADER * h, FILE * out, int flags,
332 char buffer[SHORT_STRING];
334 flags |= (h->irt_changed ? CH_UPDATE_IRT : 0)
335 | (h->refs_changed ? CH_UPDATE_REFS : 0);
337 if (mutt_copy_hdr (in, out, h->offset, h->content->offset, flags, prefix) ==
341 if (flags & CH_TXTPLAIN) {
342 char chsbuf[SHORT_STRING];
344 fputs ("Mime-Version: 1.0\n", out);
345 fputs ("Content-Transfer-Encoding: 8bit\n", out);
346 fputs ("Content-Type: text/plain; charset=", out);
347 mutt_canonical_charset (chsbuf, sizeof (chsbuf),
348 Charset ? Charset : "us-ascii");
349 rfc822_cat (buffer, sizeof (buffer), chsbuf, MimeSpecials);
353 if (ferror (out) != 0 || feof (out) != 0)
358 if (flags & CH_UPDATE) {
359 if ((flags & CH_NOSTATUS) == 0) {
360 if (h->irt_changed && h->new_env->in_reply_to) {
361 LIST *listp = h->new_env->in_reply_to;
363 if (fputs ("In-Reply-To: ", out) == EOF)
366 for (; listp; listp = listp->next)
367 if ((fputs (listp->data, out) == EOF) || (fputc (' ', out) == EOF))
370 if (fputc ('\n', out) == EOF)
374 if (h->refs_changed && h->new_env->references) {
375 LIST *listp = h->new_env->references, *refs = NULL, *t;
377 if (fputs ("References: ", out) == EOF)
380 /* Mutt stores references in reverse order, thus we create
381 * a reordered refs list that we can put in the headers */
382 for (; listp; listp = listp->next, refs = t) {
383 t = (LIST *) safe_malloc (sizeof (LIST));
384 t->data = listp->data;
388 for (; refs; refs = refs->next)
389 if ((fputs (refs->data, out) == EOF) || (fputc (' ', out) == EOF))
392 /* clearing refs from memory */
393 for (t = refs; refs; refs = t->next, t = refs)
396 if (fputc ('\n', out) == EOF)
400 if (h->old || h->read) {
401 if (fputs ("Status: ", out) == EOF)
405 if (fputs ("RO", out) == EOF)
409 if (fputc ('O', out) == EOF)
413 if (fputc ('\n', out) == EOF)
417 if (h->flagged || h->replied) {
418 if (fputs ("X-Status: ", out) == EOF)
422 if (fputc ('A', out) == EOF)
427 if (fputc ('F', out) == EOF)
431 if (fputc ('\n', out) == EOF)
437 if (flags & CH_UPDATE_LEN && (flags & CH_NOLEN) == 0) {
438 fprintf (out, "Content-Length: %ld\n", h->content->length);
439 if (h->lines != 0 || h->content->length == 0)
440 fprintf (out, "Lines: %d\n", h->lines);
443 if ((flags & CH_NONEWLINE) == 0) {
444 if (flags & CH_PREFIX)
446 if (fputc ('\n', out) == EOF) /* add header terminator */
450 if (ferror (out) || feof (out))
456 /* Count the number of lines and bytes to be deleted in this body*/
457 static int count_delete_lines (FILE * fp, BODY * b, long *length,
465 fseek (fp, b->offset, SEEK_SET);
466 for (l = b->length; l; l--) {
474 *length -= b->length - (84 + datelen);
475 /* Count the number of digits exceeding the first one to write the size */
476 for (l = 10; b->length >= l; l *= 10)
480 for (b = b->parts; b; b = b->next)
481 dellines += count_delete_lines (fp, b, length, datelen);
486 /* make a copy of a message
488 * fpout where to write output
489 * fpin where to get input
490 * hdr header of message being copied
491 * body structure of message being copied
493 * M_CM_NOHEADER don't copy header
494 * M_CM_PREFIX quote header and body
495 * M_CM_DECODE decode message body to text/plain
496 * M_CM_DISPLAY displaying output to the user
497 * M_CM_PRINTING printing the message
498 * M_CM_UPDATE update structures in memory after syncing
499 * M_CM_DECODE_PGP used for decoding PGP messages
500 * M_CM_CHARCONV perform character set conversion
501 * chflags flags to mutt_copy_header()
505 _mutt_copy_message (FILE * fpout, FILE * fpin, HEADER * hdr, BODY * body,
506 int flags, int chflags)
508 char prefix[SHORT_STRING];
510 long new_offset = -1;
512 if (flags & M_CM_PREFIX) {
513 if (option (OPTTEXTFLOWED))
514 strfcpy (prefix, ">", sizeof (prefix));
516 _mutt_make_string (prefix, sizeof (prefix), NONULL (Prefix), Context,
520 if ((flags & M_CM_NOHEADER) == 0) {
521 if (flags & M_CM_PREFIX)
522 chflags |= CH_PREFIX;
524 else if (hdr->attach_del && (chflags & CH_UPDATE_LEN)) {
526 long new_length = body->length;
527 char date[SHORT_STRING];
529 mutt_make_date (date, sizeof (date));
530 date[5] = date[mutt_strlen (date) - 1] = '\"';
532 /* Count the number of lines and bytes to be deleted */
533 fseek (fpin, body->offset, SEEK_SET);
534 new_lines = hdr->lines -
535 count_delete_lines (fpin, body, &new_length, mutt_strlen (date));
537 /* Copy the headers */
538 if (mutt_copy_header (fpin, hdr, fpout,
539 chflags | CH_NOLEN | CH_NONEWLINE, NULL))
541 fprintf (fpout, "Content-Length: %ld\n", new_length);
545 fprintf (fpout, "Lines: %d\n\n", new_lines);
546 if (ferror (fpout) || feof (fpout))
548 new_offset = ftell (fpout);
551 fseek (fpin, body->offset, SEEK_SET);
552 if (copy_delete_attach (body, fpin, fpout, date))
557 long fail = ((ftell (fpout) - new_offset) - new_length);
560 mutt_error ("The length calculation was wrong by %ld bytes", fail);
567 /* Update original message if we are sync'ing a mailfolder */
568 if (flags & M_CM_UPDATE) {
570 hdr->lines = new_lines;
571 body->offset = new_offset;
573 /* update the total size of the mailbox to reflect this deletion */
574 Context->size -= body->length - new_length;
576 * if the message is visible, update the visible size of the mailbox
579 if (Context->v2r[hdr->msgno] != -1)
580 Context->vsize -= body->length - new_length;
582 body->length = new_length;
583 mutt_free_body (&body->parts);
589 if (mutt_copy_header (fpin, hdr, fpout, chflags,
590 (chflags & CH_PREFIX) ? prefix : NULL) == -1)
593 new_offset = ftell (fpout);
596 if (flags & M_CM_DECODE) {
597 /* now make a text/plain version of the message */
598 memset (&s, 0, sizeof (STATE));
601 if (flags & M_CM_PREFIX)
603 if (flags & M_CM_DISPLAY)
604 s.flags |= M_DISPLAY;
605 if (flags & M_CM_PRINTING)
606 s.flags |= M_PRINTING;
607 if (flags & M_CM_WEED)
609 if (flags & M_CM_CHARCONV)
610 s.flags |= M_CHARCONV;
611 if (flags & M_CM_REPLYING)
612 s.flags |= M_REPLYING;
614 if (WithCrypto && flags & M_CM_VERIFY)
617 mutt_body_handler (body, &s);
620 && (flags & M_CM_DECODE_CRYPT) && (hdr->security & ENCRYPT)) {
624 if ((WithCrypto & APPLICATION_PGP)
625 && (flags & M_CM_DECODE_PGP) && (hdr->security & APPLICATION_PGP) &&
626 hdr->content->type == TYPEMULTIPART) {
627 if (crypt_pgp_decrypt_mime (fpin, &fp, hdr->content, &cur))
629 fputs ("Mime-Version: 1.0\n", fpout);
632 if ((WithCrypto & APPLICATION_SMIME)
633 && (flags & M_CM_DECODE_SMIME) && (hdr->security & APPLICATION_SMIME)
634 && hdr->content->type == TYPEAPPLICATION) {
635 if (crypt_smime_decrypt_mime (fpin, &fp, hdr->content, &cur))
639 mutt_write_mime_header (cur, fpout);
642 fseek (fp, cur->offset, 0);
643 if (mutt_copy_bytes (fp, fpout, cur->length) == -1) {
645 mutt_free_body (&cur);
648 mutt_free_body (&cur);
652 fseek (fpin, body->offset, 0);
653 if (flags & M_CM_PREFIX) {
655 size_t bytes = body->length;
657 fputs (prefix, fpout);
659 while ((c = fgetc (fpin)) != EOF && bytes--) {
662 fputs (prefix, fpout);
666 else if (mutt_copy_bytes (fpin, fpout, body->length) == -1)
670 if ((flags & M_CM_UPDATE) && (flags & M_CM_NOHEADER) == 0
671 && new_offset != -1) {
672 body->offset = new_offset;
673 mutt_free_body (&body->parts);
680 mutt_copy_message (FILE * fpout, CONTEXT * src, HEADER * hdr, int flags,
686 if ((msg = mx_open_message (src, hdr->msgno)) == NULL)
689 _mutt_copy_message (fpout, msg->fp, hdr, hdr->content, flags,
690 chflags)) == 0 && (ferror (fpout)
692 dprint (1, (debugfile, "_mutt_copy_message failed to detect EOF!\n"));
695 mx_close_message (&msg);
699 /* appends a copy of the given message to a mailbox
701 * dest destination mailbox
702 * fpin where to get input
704 * hdr message being copied
705 * body structure of message being copied
706 * flags mutt_copy_message() flags
707 * chflags mutt_copy_header() flags
711 _mutt_append_message (CONTEXT * dest, FILE * fpin, CONTEXT * src,
712 HEADER * hdr, BODY * body, int flags, int chflags)
718 mx_open_new_message (dest, hdr,
719 (src->magic == M_MBOX
720 || src->magic == M_MMDF) ? 0 : M_ADD_FROM)) ==
723 if (dest->magic == M_MBOX || dest->magic == M_MMDF)
724 chflags |= CH_FROM | CH_FORCE_FROM;
725 chflags |= (dest->magic == M_MAILDIR ? CH_NOSTATUS : CH_UPDATE);
726 r = _mutt_copy_message (msg->fp, fpin, hdr, body, flags, chflags);
727 if (mx_commit_message (msg, dest) != 0)
730 mx_close_message (&msg);
735 mutt_append_message (CONTEXT * dest, CONTEXT * src, HEADER * hdr, int cmflags,
741 if ((msg = mx_open_message (src, hdr->msgno)) == NULL)
744 _mutt_append_message (dest, msg->fp, src, hdr, hdr->content, cmflags,
746 mx_close_message (&msg);
751 * This function copies a message body, while deleting _in_the_copy_
752 * any attachments which are marked for deletion.
753 * Nothing is changed in the original message -- this is left to the caller.
755 * The function will return 0 on success and -1 on failure.
757 static int copy_delete_attach (BODY * b, FILE * fpin, FILE * fpout,
762 for (part = b->parts; part; part = part->next) {
763 if (part->deleted || part->parts) {
764 /* Copy till start of this part */
765 if (mutt_copy_bytes (fpin, fpout, part->hdr_offset - ftell (fpin)))
770 "Content-Type: message/external-body; access-type=x-mutt-deleted;\n"
771 "\texpiration=%s; length=%ld\n"
772 "\n", date + 5, part->length);
776 /* Copy the original mime headers */
777 if (mutt_copy_bytes (fpin, fpout, part->offset - ftell (fpin)))
780 /* Skip the deleted body */
781 fseek (fpin, part->offset + part->length, SEEK_SET);
784 if (copy_delete_attach (part, fpin, fpout, date))
790 /* Copy the last parts */
791 if (mutt_copy_bytes (fpin, fpout, b->offset + b->length - ftell (fpin)))
798 * This function is the equivalent of mutt_write_address_list(),
799 * but writes to a buffer instead of writing to a stream.
800 * mutt_write_address_list could be re-used if we wouldn't store
801 * all the decoded headers in a huge array, first.
806 static void format_address_header (char **h, ADDRESS * a)
808 char buf[HUGE_STRING];
812 int l, linelen, buflen, count;
814 linelen = mutt_strlen (*h);
815 buflen = linelen + 3;
818 safe_realloc (h, buflen);
819 for (count = 0; a; a = a->next, count++) {
820 ADDRESS *tmp = a->next;
823 *buf = *cbuf = *c2buf = '\0';
824 rfc822_write_address (buf, sizeof (buf), a, 0);
827 l = mutt_strlen (buf);
828 if (count && linelen + l > 74) {
829 strcpy (cbuf, "\n\t"); /* __STRCPY_CHECKED__ */
834 strcpy (cbuf, " "); /* __STRCPY_CHECKED__ */
839 if (!a->group && a->next && a->next->mailbox) {
842 strcpy (c2buf, ","); /* __STRCPY_CHECKED__ */
845 buflen += l + mutt_strlen (cbuf) + mutt_strlen (c2buf);
846 safe_realloc (h, buflen);
847 strcat (*h, cbuf); /* __STRCAT_CHECKED__ */
848 strcat (*h, buf); /* __STRCAT_CHECKED__ */
849 strcat (*h, c2buf); /* __STRCAT_CHECKED__ */
852 /* Space for this was allocated in the beginning of this function. */
853 strcat (*h, "\n"); /* __STRCAT_CHECKED__ */
856 static int address_header_decode (char **h)
863 switch (tolower ((unsigned char) *s)) {
866 if (ascii_strncasecmp (s, "return-path:", 12) == 0) {
870 else if (ascii_strncasecmp (s, "reply-to:", 9) == 0) {
878 if (ascii_strncasecmp (s, "from:", 5))
885 if (ascii_strncasecmp (s, "cc:", 3))
893 if (ascii_strncasecmp (s, "bcc:", 4))
900 if (ascii_strncasecmp (s, "sender:", 7))
907 if (ascii_strncasecmp (s, "to:", 3))
914 if (ascii_strncasecmp (s, "mail-followup-to:", 17))
923 if ((a = rfc822_parse_adrlist (a, s + l)) == NULL)
926 mutt_addrlist_to_local (a);
927 rfc2047_decode_adrlist (a);
929 *h = safe_calloc (1, l + 2);
931 strfcpy (*h, s, l + 1);
933 format_address_header (h, a);
935 rfc822_free_address (&a);