2 * Copyright notice from original mutt:
3 * Copyright (C) 1996-2000,2002 Michael R. Elkins <me@mutt.org>
5 * This file is part of mutt-ng, see http://www.muttng.org/.
6 * It's licensed under the GNU General Public License,
7 * please see the file GPL in the top level source directory.
21 #include "mutt_crypt.h"
22 #include "mutt_idna.h"
26 #include "lib/debug.h"
31 #include <unistd.h> /* needed for SEEK_SET under SunOS 4.1.4 */
33 static int address_header_decode (char **str);
34 static int copy_delete_attach (BODY * b, FILE * fpin, FILE * fpout,
37 /* Ok, the only reason for not merging this with mutt_copy_header()
38 * below is to avoid creating a HEADER structure in message_handler().
41 mutt_copy_hdr (FILE * in, FILE * out, long off_start, long off_end, int flags,
47 char buf[STRING]; /* should be long enough to get most fields in one pass */
53 char *this_one = NULL;
57 if (ftell (in) != off_start)
58 fseek (in, off_start, 0);
64 (CH_REORDER | CH_WEED | CH_MIME | CH_DECODE | CH_PREFIX |
65 CH_WEED_DELIVERED)) == 0) {
66 /* Without these flags to complicate things
67 * we can do a more efficient line to line copying
69 while (ftell (in) < off_end) {
70 nl = strchr (buf, '\n');
72 if ((fgets (buf, sizeof (buf), in)) == NULL)
75 /* Is it the begining of a header? */
76 if (nl && buf[0] != ' ' && buf[0] != '\t') {
78 if (!from && str_ncmp ("From ", buf, 5) == 0) {
79 if ((flags & CH_FROM) == 0)
83 else if (flags & (CH_NOQFROM) &&
84 ascii_strncasecmp (">From ", buf, 6) == 0)
87 else if (buf[0] == '\n' || (buf[0] == '\r' && buf[1] == '\n'))
88 break; /* end of header */
90 if ((flags & (CH_UPDATE | CH_XMIT | CH_NOSTATUS)) &&
91 (ascii_strncasecmp ("Status:", buf, 7) == 0 ||
92 ascii_strncasecmp ("X-Status:", buf, 9) == 0))
94 if ((flags & (CH_UPDATE_LEN | CH_XMIT | CH_NOLEN)) &&
95 (ascii_strncasecmp ("Content-Length:", buf, 15) == 0 ||
96 ascii_strncasecmp ("Lines:", buf, 6) == 0))
98 if ((flags & CH_UPDATE_REFS) &&
99 ascii_strncasecmp ("References:", buf, 11) == 0)
101 if ((flags & CH_UPDATE_IRT) &&
102 ascii_strncasecmp ("In-Reply-To:", buf, 12) == 0)
107 if (!ignore && fputs (buf, out) == EOF)
117 /* We are going to read and collect the headers in an array
118 * so we are able to do re-ordering.
119 * First count the number of entries in the array
121 if (flags & CH_REORDER) {
122 for (t = HeaderOrderList; t; t = t->next) {
123 debug_print (1, ("Reorder list: %s\n", t->data));
128 debug_print (1, ("WEED is %s\n", (flags & CH_WEED) ? "Set" : "Not"));
130 headers = mem_calloc (hdr_count, sizeof (char *));
132 /* Read all the headers into the array */
133 while (ftell (in) < off_end) {
134 nl = strchr (buf, '\n');
137 if ((fgets (buf, sizeof (buf), in)) == NULL)
140 /* Is it the begining of a header? */
141 if (nl && buf[0] != ' ' && buf[0] != '\t') {
143 /* set curline to 1 for To:/Cc:/Bcc: and 0 otherwise */
144 curline = (flags & CH_WEED) && (ascii_strncmp ("To:", buf, 3) == 0 ||
145 ascii_strncmp ("Cc:", buf, 3) == 0 ||
146 ascii_strncmp ("Bcc:", buf, 4) == 0);
148 /* Do we have anything pending? */
150 if (flags & CH_DECODE) {
151 if (!address_header_decode (&this_one))
152 rfc2047_decode (&this_one);
156 headers[x] = this_one;
158 mem_realloc (&headers[x], str_len (headers[x]) +
159 str_len (this_one) + sizeof (char));
160 strcat (headers[x], this_one); /* __STRCAT_CHECKED__ */
161 mem_free (&this_one);
169 if (!from && str_ncmp ("From ", buf, 5) == 0) {
170 if ((flags & CH_FROM) == 0)
172 this_is_from = from = 1;
174 else if (buf[0] == '\n' || (buf[0] == '\r' && buf[1] == '\n'))
175 break; /* end of header */
177 /* note: CH_FROM takes precedence over header weeding. */
178 if (!((flags & CH_FROM) && (flags & CH_FORCE_FROM) && this_is_from) &&
180 mutt_matches_ignore (buf, Ignore) &&
181 !mutt_matches_ignore (buf, UnIgnore))
183 if ((flags & CH_WEED_DELIVERED) &&
184 ascii_strncasecmp ("Delivered-To:", buf, 13) == 0)
186 if ((flags & (CH_UPDATE | CH_XMIT | CH_NOSTATUS)) &&
187 (ascii_strncasecmp ("Status:", buf, 7) == 0 ||
188 ascii_strncasecmp ("X-Status:", buf, 9) == 0))
190 if ((flags & (CH_UPDATE_LEN | CH_XMIT | CH_NOLEN)) &&
191 (ascii_strncasecmp ("Content-Length:", buf, 15) == 0 ||
192 ascii_strncasecmp ("Lines:", buf, 6) == 0))
194 if ((flags & CH_MIME) &&
195 ((ascii_strncasecmp ("content-", buf, 8) == 0 &&
196 (ascii_strncasecmp ("transfer-encoding:", buf + 8, 18) == 0 ||
197 ascii_strncasecmp ("type:", buf + 8, 5) == 0)) ||
198 ascii_strncasecmp ("mime-version:", buf, 13) == 0))
200 if ((flags & CH_UPDATE_REFS) &&
201 ascii_strncasecmp ("References:", buf, 11) == 0)
203 if ((flags & CH_UPDATE_IRT) &&
204 ascii_strncasecmp ("In-Reply-To:", buf, 12) == 0)
207 /* Find x -- the array entry where this header is to be saved */
208 if (flags & CH_REORDER) {
209 for (t = HeaderOrderList, x = 0; (t); t = t->next, x++) {
210 if (!ascii_strncasecmp (buf, t->data, str_len (t->data))) {
211 debug_print (2, ("Reorder: %s matches %s\n", t->data, buf));
218 } /* If beginning of header */
221 debug_print (2, ("Reorder: x = %d; hdr_count = %d\n", x, hdr_count));
223 this_one = str_dup (buf);
224 /* we do want to see all lines if this header doesn't feature
225 * abbreviations (curline is 0), $max_display_recips is 0 and
226 * while the number hasn't reached $max_display_recips yet */
227 else if (curline == 0 || MaxDispRecips == 0 || ++curline <= MaxDispRecips) {
228 mem_realloc (&this_one,
229 str_len (this_one) + str_len (buf) +
231 strcat (this_one, buf); /* __STRCAT_CHECKED__ */
232 /* only for the first line which doesn't exeeds
233 * $max_display_recips: abbreviate it */
234 } else if (curline == MaxDispRecips+1) {
235 mem_realloc (&this_one, str_len (this_one) + 5);
236 strcat (this_one, " ...");
239 } /* while (ftell (in) < off_end) */
241 /* Do we have anything pending? -- XXX, same code as in above in the loop. */
243 if (flags & CH_DECODE) {
244 if (!address_header_decode (&this_one))
245 rfc2047_decode (&this_one);
249 headers[x] = this_one;
251 mem_realloc (&headers[x], str_len (headers[x]) +
252 str_len (this_one) + sizeof (char));
253 strcat (headers[x], this_one); /* __STRCAT_CHECKED__ */
254 mem_free (&this_one);
260 /* Now output the headers in order */
261 for (x = 0; x < hdr_count; x++) {
264 if (flags & CH_DECODE)
265 rfc2047_decode (&headers[x]);
268 /* We couldn't do the prefixing when reading because RFC 2047
269 * decoding may have concatenated lines.
271 if (flags & CH_PREFIX) {
272 char *ch = headers[x];
273 int print_prefix = 1;
277 if (fputs (prefix, out) == EOF) {
284 if (*ch == '\n' && ch[1])
287 if (putc (*ch++, out) == EOF) {
296 if (fputs (headers[x], out) == EOF) {
304 /* Free in a separate loop to be sure that all headers are freed
305 * in case of error. */
306 for (x = 0; x < hdr_count; x++)
307 mem_free (&headers[x]);
316 CH_DECODE RFC2047 header decoding
317 CH_FROM retain the "From " message separator
318 CH_FORCE_FROM give CH_FROM precedence over CH_WEED
319 CH_MIME ignore MIME fields
320 CH_NOLEN don't write Content-Length: and Lines:
321 CH_NONEWLINE don't output a newline after the header
322 CH_NOSTATUS ignore the Status: and X-Status:
323 CH_PREFIX quote header with $indent_str
324 CH_REORDER output header in order specified by `hdr_order'
325 CH_TXTPLAIN generate text/plain MIME headers [hack alert.]
326 CH_UPDATE write new Status: and X-Status:
327 CH_UPDATE_LEN write new Content-Length: and Lines:
328 CH_XMIT ignore Lines: and Content-Length:
329 CH_WEED do header weeding
330 CH_NOQFROM ignore ">From " line
331 CH_UPDATE_IRT update the In-Reply-To: header
332 CH_UPDATE_REFS update the References: header
335 string to use if CH_PREFIX is set
339 mutt_copy_header (FILE * in, HEADER * h, FILE * out, int flags,
342 char buffer[SHORT_STRING];
345 flags |= (h->env->irt_changed ? CH_UPDATE_IRT : 0) |
346 (h->env->refs_changed ? CH_UPDATE_REFS : 0);
348 if (mutt_copy_hdr (in, out, h->offset, h->content->offset, flags, prefix) ==
352 if (flags & CH_TXTPLAIN) {
353 char chsbuf[SHORT_STRING];
355 fputs ("MIME-Version: 1.0\n", out);
356 fputs ("Content-Transfer-Encoding: 8bit\n", out);
357 fputs ("Content-Type: text/plain; charset=", out);
358 mutt_canonical_charset (chsbuf, sizeof (chsbuf),
359 Charset ? Charset : "us-ascii");
360 rfc822_cat (buffer, sizeof (buffer), chsbuf, MimeSpecials);
364 if (ferror (out) != 0 || feof (out) != 0)
369 if (flags & CH_UPDATE) {
370 if ((flags & CH_NOSTATUS) == 0) {
371 if (h->env->irt_changed && h->env->in_reply_to) {
372 LIST *listp = h->env->in_reply_to;
374 if (fputs ("In-Reply-To: ", out) == EOF)
377 for (; listp; listp = listp->next)
378 if ((fputs (listp->data, out) == EOF) || (fputc (' ', out) == EOF))
381 if (fputc ('\n', out) == EOF)
385 if (h->env->refs_changed && h->env->references) {
386 LIST *listp = h->env->references, *refs = NULL, *t;
388 if (fputs ("References: ", out) == EOF)
391 /* Mutt stores references in reverse order, thus we create
392 * a reordered refs list that we can put in the headers */
393 for (; listp; listp = listp->next, refs = t) {
394 t = (LIST *) mem_malloc (sizeof (LIST));
395 t->data = listp->data;
399 for (; refs; refs = refs->next)
400 if ((fputs (refs->data, out) == EOF) || (fputc (' ', out) == EOF))
403 /* clearing refs from memory */
404 for (t = refs; refs; refs = t->next, t = refs)
407 if (fputc ('\n', out) == EOF)
411 if (h->old || h->read) {
412 if (fputs ("Status: ", out) == EOF)
416 if (fputs ("RO", out) == EOF)
420 if (fputc ('O', out) == EOF)
424 if (fputc ('\n', out) == EOF)
428 if (h->flagged || h->replied) {
429 if (fputs ("X-Status: ", out) == EOF)
433 if (fputc ('A', out) == EOF)
438 if (fputc ('F', out) == EOF)
442 if (fputc ('\n', out) == EOF)
448 if (flags & CH_UPDATE_LEN && (flags & CH_NOLEN) == 0) {
449 fprintf (out, "Content-Length: " OFF_T_FMT "\n", h->content->length);
450 if (h->lines != 0 || h->content->length == 0)
451 fprintf (out, "Lines: %d\n", h->lines);
454 if ((flags & CH_NONEWLINE) == 0) {
455 if (flags & CH_PREFIX)
457 if (fputc ('\n', out) == EOF) /* add header terminator */
461 if (ferror (out) || feof (out))
467 /* Count the number of lines and bytes to be deleted in this body*/
468 static int count_delete_lines (FILE * fp, BODY * b, LOFF_T *length,
476 fseek (fp, b->offset, SEEK_SET);
477 for (l = b->length; l; l--) {
485 *length -= b->length - (84 + datelen);
486 /* Count the number of digits exceeding the first one to write the size */
487 for (l = 10; b->length >= l; l *= 10)
491 for (b = b->parts; b; b = b->next)
492 dellines += count_delete_lines (fp, b, length, datelen);
497 /* make a copy of a message
499 * fpout where to write output
500 * fpin where to get input
501 * hdr header of message being copied
502 * body structure of message being copied
504 * M_CM_NOHEADER don't copy header
505 * M_CM_PREFIX quote header and body
506 * M_CM_DECODE decode message body to text/plain
507 * M_CM_DISPLAY displaying output to the user
508 * M_CM_PRINTING printing the message
509 * M_CM_UPDATE update structures in memory after syncing
510 * M_CM_DECODE_PGP used for decoding PGP messages
511 * M_CM_CHARCONV perform character set conversion
512 * chflags flags to mutt_copy_header()
516 _mutt_copy_message (FILE * fpout, FILE * fpin, HEADER * hdr, BODY * body,
517 int flags, int chflags)
519 char prefix[SHORT_STRING];
521 LOFF_T new_offset = -1;
524 if (flags & M_CM_PREFIX) {
525 if (option (OPTTEXTFLOWED))
526 strfcpy (prefix, ">", sizeof (prefix));
528 _mutt_make_string (prefix, sizeof (prefix), NONULL (Prefix), Context,
532 if ((flags & M_CM_NOHEADER) == 0) {
533 if (flags & M_CM_PREFIX)
534 chflags |= CH_PREFIX;
536 else if (hdr->attach_del && (chflags & CH_UPDATE_LEN)) {
538 LOFF_T new_length = body->length;
539 char date[SHORT_STRING];
541 mutt_make_date (date, sizeof (date));
542 date[5] = date[str_len (date) - 1] = '\"';
544 /* Count the number of lines and bytes to be deleted */
545 fseek (fpin, body->offset, SEEK_SET);
546 new_lines = hdr->lines -
547 count_delete_lines (fpin, body, &new_length, str_len (date));
549 /* Copy the headers */
550 if (mutt_copy_header (fpin, hdr, fpout,
551 chflags | CH_NOLEN | CH_NONEWLINE, NULL))
553 fprintf (fpout, "Content-Length: " OFF_T_FMT "\n", new_length);
557 fprintf (fpout, "Lines: %d\n\n", new_lines);
558 if (ferror (fpout) || feof (fpout))
560 new_offset = ftello (fpout);
563 fseek (fpin, body->offset, SEEK_SET);
564 if (copy_delete_attach (body, fpin, fpout, date))
569 LOFF_T fail = ((ftello (fpout) - new_offset) - new_length);
572 mutt_error ("The length calculation was wrong by %ld bytes", fail);
579 /* Update original message if we are sync'ing a mailfolder */
580 if (flags & M_CM_UPDATE) {
582 hdr->lines = new_lines;
583 body->offset = new_offset;
585 /* update the total size of the mailbox to reflect this deletion */
586 Context->size -= body->length - new_length;
588 * if the message is visible, update the visible size of the mailbox
591 if (Context->v2r[hdr->msgno] != -1)
592 Context->vsize -= body->length - new_length;
594 body->length = new_length;
595 mutt_free_body (&body->parts);
601 if (mutt_copy_header (fpin, hdr, fpout, chflags,
602 (chflags & CH_PREFIX) ? prefix : NULL) == -1)
605 new_offset = ftello (fpout);
608 if (flags & M_CM_DECODE) {
609 /* now make a text/plain version of the message */
610 memset (&s, 0, sizeof (STATE));
613 if (flags & M_CM_PREFIX)
615 if (flags & M_CM_DISPLAY)
616 s.flags |= M_DISPLAY;
617 if (flags & M_CM_PRINTING)
618 s.flags |= M_PRINTING;
619 if (flags & M_CM_WEED)
621 if (flags & M_CM_CHARCONV)
622 s.flags |= M_CHARCONV;
623 if (flags & M_CM_REPLYING)
624 s.flags |= M_REPLYING;
626 if (WithCrypto && flags & M_CM_VERIFY)
629 rc = mutt_body_handler (body, &s);
632 && (flags & M_CM_DECODE_CRYPT) && (hdr->security & ENCRYPT)) {
636 if ((WithCrypto & APPLICATION_PGP)
637 && (flags & M_CM_DECODE_PGP) && (hdr->security & APPLICATION_PGP) &&
638 hdr->content->type == TYPEMULTIPART) {
639 if (crypt_pgp_decrypt_mime (fpin, &fp, hdr->content, &cur))
641 fputs ("MIME-Version: 1.0\n", fpout);
644 if ((WithCrypto & APPLICATION_SMIME)
645 && (flags & M_CM_DECODE_SMIME) && (hdr->security & APPLICATION_SMIME)
646 && hdr->content->type == TYPEAPPLICATION) {
647 if (crypt_smime_decrypt_mime (fpin, &fp, hdr->content, &cur))
651 mutt_write_mime_header (cur, fpout);
654 fseek (fp, cur->offset, 0);
655 if (mutt_copy_bytes (fp, fpout, cur->length) == -1) {
657 mutt_free_body (&cur);
660 mutt_free_body (&cur);
664 fseek (fpin, body->offset, 0);
665 if (flags & M_CM_PREFIX) {
667 size_t bytes = body->length;
669 fputs (prefix, fpout);
671 while ((c = fgetc (fpin)) != EOF && bytes--) {
674 fputs (prefix, fpout);
678 else if (mutt_copy_bytes (fpin, fpout, body->length) == -1)
682 if ((flags & M_CM_UPDATE) && (flags & M_CM_NOHEADER) == 0
683 && new_offset != -1) {
684 body->offset = new_offset;
685 mutt_free_body (&body->parts);
692 mutt_copy_message (FILE * fpout, CONTEXT * src, HEADER * hdr, int flags,
698 if ((msg = mx_open_message (src, hdr->msgno)) == NULL)
701 _mutt_copy_message (fpout, msg->fp, hdr, hdr->content, flags,
702 chflags)) == 0 && (ferror (fpout)
704 debug_print (1, ("_mutt_copy_message failed to detect EOF!\n"));
707 mx_close_message (&msg);
711 /* appends a copy of the given message to a mailbox
713 * dest destination mailbox
714 * fpin where to get input
716 * hdr message being copied
717 * body structure of message being copied
718 * flags mutt_copy_message() flags
719 * chflags mutt_copy_header() flags
723 _mutt_append_message (CONTEXT * dest, FILE * fpin, CONTEXT * src,
724 HEADER * hdr, BODY * body, int flags, int chflags) {
729 fseek(fpin, hdr->offset, 0);
730 if (fgets (buf, sizeof (buf), fpin) == NULL)
732 if ((msg = mx_open_new_message (dest, hdr, is_from (buf, NULL, 0, NULL) ? 0 : M_ADD_FROM)) == NULL)
734 if (dest->magic == M_MBOX || dest->magic == M_MMDF)
735 chflags |= CH_FROM | CH_FORCE_FROM;
736 chflags |= (dest->magic == M_MAILDIR ? CH_NOSTATUS : CH_UPDATE);
737 r = _mutt_copy_message (msg->fp, fpin, hdr, body, flags, chflags);
738 if (mx_commit_message (msg, dest) != 0)
741 mx_close_message (&msg);
746 mutt_append_message (CONTEXT * dest, CONTEXT * src, HEADER * hdr, int cmflags,
752 if ((msg = mx_open_message (src, hdr->msgno)) == NULL)
755 _mutt_append_message (dest, msg->fp, src, hdr, hdr->content, cmflags,
757 mx_close_message (&msg);
762 * This function copies a message body, while deleting _in_the_copy_
763 * any attachments which are marked for deletion.
764 * Nothing is changed in the original message -- this is left to the caller.
766 * The function will return 0 on success and -1 on failure.
768 static int copy_delete_attach (BODY * b, FILE * fpin, FILE * fpout,
773 for (part = b->parts; part; part = part->next) {
774 if (part->deleted || part->parts) {
775 /* Copy till start of this part */
776 if (mutt_copy_bytes (fpin, fpout, part->hdr_offset - ftell (fpin)))
781 "Content-Type: message/external-body; access-type=x-mutt-deleted;\n"
782 "\texpiration=%s; length=" OFF_T_FMT "\n"
783 "\n", date + 5, part->length);
787 /* Copy the original mime headers */
788 if (mutt_copy_bytes (fpin, fpout, part->offset - ftell (fpin)))
791 /* Skip the deleted body */
792 fseek (fpin, part->offset + part->length, SEEK_SET);
795 if (copy_delete_attach (part, fpin, fpout, date))
801 /* Copy the last parts */
802 if (mutt_copy_bytes (fpin, fpout, b->offset + b->length - ftell (fpin)))
809 * This function is the equivalent of mutt_write_address_list(),
810 * but writes to a buffer instead of writing to a stream.
811 * mutt_write_address_list could be re-used if we wouldn't store
812 * all the decoded headers in a huge array, first.
817 static void format_address_header (char **h, ADDRESS * a)
819 char buf[HUGE_STRING];
823 int l, linelen, buflen, count;
825 linelen = str_len (*h);
826 buflen = linelen + 3;
829 mem_realloc (h, buflen);
830 for (count = 0; a; a = a->next, count++) {
831 ADDRESS *tmp = a->next;
834 *buf = *cbuf = *c2buf = '\0';
835 rfc822_write_address (buf, sizeof (buf), a, 0);
839 if (count && linelen + l > 74) {
840 strcpy (cbuf, "\n\t"); /* __STRCPY_CHECKED__ */
845 strcpy (cbuf, " "); /* __STRCPY_CHECKED__ */
850 if (!a->group && a->next && a->next->mailbox) {
853 strcpy (c2buf, ","); /* __STRCPY_CHECKED__ */
856 buflen += l + str_len (cbuf) + str_len (c2buf);
857 mem_realloc (h, buflen);
858 strcat (*h, cbuf); /* __STRCAT_CHECKED__ */
859 strcat (*h, buf); /* __STRCAT_CHECKED__ */
860 strcat (*h, c2buf); /* __STRCAT_CHECKED__ */
863 /* Space for this was allocated in the beginning of this function. */
864 strcat (*h, "\n"); /* __STRCAT_CHECKED__ */
867 static int address_header_decode (char **h)
874 switch (tolower ((unsigned char) *s)) {
877 if (ascii_strncasecmp (s, "return-path:", 12) == 0) {
881 else if (ascii_strncasecmp (s, "reply-to:", 9) == 0) {
889 if (ascii_strncasecmp (s, "from:", 5))
896 if (ascii_strncasecmp (s, "cc:", 3))
904 if (ascii_strncasecmp (s, "bcc:", 4))
911 if (ascii_strncasecmp (s, "sender:", 7))
918 if (ascii_strncasecmp (s, "to:", 3))
925 if (ascii_strncasecmp (s, "mail-followup-to:", 17))
934 if ((a = rfc822_parse_adrlist (a, s + l)) == NULL)
937 mutt_addrlist_to_local (a);
938 rfc2047_decode_adrlist (a);
940 *h = mem_calloc (1, l + 2);
942 strfcpy (*h, s, l + 1);
944 format_address_header (h, a);
946 rfc822_free_address (&a);