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.
19 #include "mutt_crypt.h"
20 #include "mutt_idna.h"
24 #include "lib/debug.h"
29 #include <unistd.h> /* needed for SEEK_SET under SunOS 4.1.4 */
31 static int address_header_decode (char **str);
32 static int copy_delete_attach (BODY * b, FILE * fpin, FILE * fpout,
35 /* Ok, the only reason for not merging this with mutt_copy_header()
36 * below is to avoid creating a HEADER structure in message_handler().
39 mutt_copy_hdr (FILE * in, FILE * out, long off_start, long off_end, int flags,
45 char buf[STRING]; /* should be long enough to get most fields in one pass */
51 char *this_one = NULL;
54 if (ftell (in) != off_start)
55 fseek (in, off_start, 0);
61 (CH_REORDER | CH_WEED | CH_MIME | CH_DECODE | CH_PREFIX |
62 CH_WEED_DELIVERED)) == 0) {
63 /* Without these flags to complicate things
64 * we can do a more efficient line to line copying
66 while (ftell (in) < off_end) {
67 nl = strchr (buf, '\n');
69 if ((fgets (buf, sizeof (buf), in)) == NULL)
72 /* Is it the begining of a header? */
73 if (nl && buf[0] != ' ' && buf[0] != '\t') {
75 if (!from && safe_strncmp ("From ", buf, 5) == 0) {
76 if ((flags & CH_FROM) == 0)
80 else if (flags & (CH_NOQFROM) &&
81 ascii_strncasecmp (">From ", buf, 6) == 0)
84 else if (buf[0] == '\n' || (buf[0] == '\r' && buf[1] == '\n'))
85 break; /* end of header */
87 if ((flags & (CH_UPDATE | CH_XMIT | CH_NOSTATUS)) &&
88 (ascii_strncasecmp ("Status:", buf, 7) == 0 ||
89 ascii_strncasecmp ("X-Status:", buf, 9) == 0))
91 if ((flags & (CH_UPDATE_LEN | CH_XMIT | CH_NOLEN)) &&
92 (ascii_strncasecmp ("Content-Length:", buf, 15) == 0 ||
93 ascii_strncasecmp ("Lines:", buf, 6) == 0))
95 if ((flags & CH_UPDATE_REFS) &&
96 ascii_strncasecmp ("References:", buf, 11) == 0)
98 if ((flags & CH_UPDATE_IRT) &&
99 ascii_strncasecmp ("In-Reply-To:", buf, 12) == 0)
104 if (!ignore && fputs (buf, out) == EOF)
114 /* We are going to read and collect the headers in an array
115 * so we are able to do re-ordering.
116 * First count the number of entries in the array
118 if (flags & CH_REORDER) {
119 for (t = HeaderOrderList; t; t = t->next) {
120 debug_print (1, ("Reorder list: %s\n", t->data));
125 debug_print (1, ("WEED is %s\n", (flags & CH_WEED) ? "Set" : "Not"));
127 headers = safe_calloc (hdr_count, sizeof (char *));
129 /* Read all the headers into the array */
130 while (ftell (in) < off_end) {
131 nl = strchr (buf, '\n');
134 if ((fgets (buf, sizeof (buf), in)) == NULL)
137 /* Is it the begining of a header? */
138 if (nl && buf[0] != ' ' && buf[0] != '\t') {
139 /* Do we have anything pending? */
141 if (flags & CH_DECODE) {
142 if (!address_header_decode (&this_one))
143 rfc2047_decode (&this_one);
147 headers[x] = this_one;
149 safe_realloc (&headers[x], safe_strlen (headers[x]) +
150 safe_strlen (this_one) + sizeof (char));
151 strcat (headers[x], this_one); /* __STRCAT_CHECKED__ */
160 if (!from && safe_strncmp ("From ", buf, 5) == 0) {
161 if ((flags & CH_FROM) == 0)
163 this_is_from = from = 1;
165 else if (buf[0] == '\n' || (buf[0] == '\r' && buf[1] == '\n'))
166 break; /* end of header */
168 /* note: CH_FROM takes precedence over header weeding. */
169 if (!((flags & CH_FROM) && (flags & CH_FORCE_FROM) && this_is_from) &&
171 mutt_matches_ignore (buf, Ignore) &&
172 !mutt_matches_ignore (buf, UnIgnore))
174 if ((flags & CH_WEED_DELIVERED) &&
175 ascii_strncasecmp ("Delivered-To:", buf, 13) == 0)
177 if ((flags & (CH_UPDATE | CH_XMIT | CH_NOSTATUS)) &&
178 (ascii_strncasecmp ("Status:", buf, 7) == 0 ||
179 ascii_strncasecmp ("X-Status:", buf, 9) == 0))
181 if ((flags & (CH_UPDATE_LEN | CH_XMIT | CH_NOLEN)) &&
182 (ascii_strncasecmp ("Content-Length:", buf, 15) == 0 ||
183 ascii_strncasecmp ("Lines:", buf, 6) == 0))
185 if ((flags & CH_MIME) &&
186 ((ascii_strncasecmp ("content-", buf, 8) == 0 &&
187 (ascii_strncasecmp ("transfer-encoding:", buf + 8, 18) == 0 ||
188 ascii_strncasecmp ("type:", buf + 8, 5) == 0)) ||
189 ascii_strncasecmp ("mime-version:", buf, 13) == 0))
191 if ((flags & CH_UPDATE_REFS) &&
192 ascii_strncasecmp ("References:", buf, 11) == 0)
194 if ((flags & CH_UPDATE_IRT) &&
195 ascii_strncasecmp ("In-Reply-To:", buf, 12) == 0)
198 /* Find x -- the array entry where this header is to be saved */
199 if (flags & CH_REORDER) {
200 for (t = HeaderOrderList, x = 0; (t); t = t->next, x++) {
201 if (!ascii_strncasecmp (buf, t->data, safe_strlen (t->data))) {
202 debug_print (2, ("Reorder: %s matches %s\n", t->data, buf));
209 } /* If beginning of header */
212 debug_print (2, ("Reorder: x = %d; hdr_count = %d\n", x, hdr_count));
214 this_one = safe_strdup (buf);
216 safe_realloc (&this_one,
217 safe_strlen (this_one) + safe_strlen (buf) +
219 strcat (this_one, buf); /* __STRCAT_CHECKED__ */
222 } /* while (ftell (in) < off_end) */
224 /* Do we have anything pending? -- XXX, same code as in above in the loop. */
226 if (flags & CH_DECODE) {
227 if (!address_header_decode (&this_one))
228 rfc2047_decode (&this_one);
232 headers[x] = this_one;
234 safe_realloc (&headers[x], safe_strlen (headers[x]) +
235 safe_strlen (this_one) + sizeof (char));
236 strcat (headers[x], this_one); /* __STRCAT_CHECKED__ */
243 /* Now output the headers in order */
244 for (x = 0; x < hdr_count; x++) {
247 if (flags & CH_DECODE)
248 rfc2047_decode (&headers[x]);
251 /* We couldn't do the prefixing when reading because RFC 2047
252 * decoding may have concatenated lines.
254 if (flags & CH_PREFIX) {
255 char *ch = headers[x];
256 int print_prefix = 1;
260 if (fputs (prefix, out) == EOF) {
267 if (*ch == '\n' && ch[1])
270 if (putc (*ch++, out) == EOF) {
279 if (fputs (headers[x], out) == EOF) {
287 /* Free in a separate loop to be sure that all headers are freed
288 * in case of error. */
289 for (x = 0; x < hdr_count; x++)
299 CH_DECODE RFC2047 header decoding
300 CH_FROM retain the "From " message separator
301 CH_FORCE_FROM give CH_FROM precedence over CH_WEED
302 CH_MIME ignore MIME fields
303 CH_NOLEN don't write Content-Length: and Lines:
304 CH_NONEWLINE don't output a newline after the header
305 CH_NOSTATUS ignore the Status: and X-Status:
306 CH_PREFIX quote header with $indent_str
307 CH_REORDER output header in order specified by `hdr_order'
308 CH_TXTPLAIN generate text/plain MIME headers [hack alert.]
309 CH_UPDATE write new Status: and X-Status:
310 CH_UPDATE_LEN write new Content-Length: and Lines:
311 CH_XMIT ignore Lines: and Content-Length:
312 CH_WEED do header weeding
313 CH_NOQFROM ignore ">From " line
314 CH_UPDATE_IRT update the In-Reply-To: header
315 CH_UPDATE_REFS update the References: header
318 string to use if CH_PREFIX is set
322 mutt_copy_header (FILE * in, HEADER * h, FILE * out, int flags,
325 char buffer[SHORT_STRING];
327 flags |= (h->irt_changed ? CH_UPDATE_IRT : 0)
328 | (h->refs_changed ? CH_UPDATE_REFS : 0);
330 if (mutt_copy_hdr (in, out, h->offset, h->content->offset, flags, prefix) ==
334 if (flags & CH_TXTPLAIN) {
335 char chsbuf[SHORT_STRING];
337 fputs ("Mime-Version: 1.0\n", out);
338 fputs ("Content-Transfer-Encoding: 8bit\n", out);
339 fputs ("Content-Type: text/plain; charset=", out);
340 mutt_canonical_charset (chsbuf, sizeof (chsbuf),
341 Charset ? Charset : "us-ascii");
342 rfc822_cat (buffer, sizeof (buffer), chsbuf, MimeSpecials);
346 if (ferror (out) != 0 || feof (out) != 0)
351 if (flags & CH_UPDATE) {
352 if ((flags & CH_NOSTATUS) == 0) {
353 if (h->irt_changed && h->new_env->in_reply_to) {
354 LIST *listp = h->new_env->in_reply_to;
356 if (fputs ("In-Reply-To: ", out) == EOF)
359 for (; listp; listp = listp->next)
360 if ((fputs (listp->data, out) == EOF) || (fputc (' ', out) == EOF))
363 if (fputc ('\n', out) == EOF)
367 if (h->refs_changed && h->new_env->references) {
368 LIST *listp = h->new_env->references, *refs = NULL, *t;
370 if (fputs ("References: ", out) == EOF)
373 /* Mutt stores references in reverse order, thus we create
374 * a reordered refs list that we can put in the headers */
375 for (; listp; listp = listp->next, refs = t) {
376 t = (LIST *) safe_malloc (sizeof (LIST));
377 t->data = listp->data;
381 for (; refs; refs = refs->next)
382 if ((fputs (refs->data, out) == EOF) || (fputc (' ', out) == EOF))
385 /* clearing refs from memory */
386 for (t = refs; refs; refs = t->next, t = refs)
389 if (fputc ('\n', out) == EOF)
393 if (h->old || h->read) {
394 if (fputs ("Status: ", out) == EOF)
398 if (fputs ("RO", out) == EOF)
402 if (fputc ('O', out) == EOF)
406 if (fputc ('\n', out) == EOF)
410 if (h->flagged || h->replied) {
411 if (fputs ("X-Status: ", out) == EOF)
415 if (fputc ('A', out) == EOF)
420 if (fputc ('F', out) == EOF)
424 if (fputc ('\n', out) == EOF)
430 if (flags & CH_UPDATE_LEN && (flags & CH_NOLEN) == 0) {
431 fprintf (out, "Content-Length: %ld\n", h->content->length);
432 if (h->lines != 0 || h->content->length == 0)
433 fprintf (out, "Lines: %d\n", h->lines);
436 if ((flags & CH_NONEWLINE) == 0) {
437 if (flags & CH_PREFIX)
439 if (fputc ('\n', out) == EOF) /* add header terminator */
443 if (ferror (out) || feof (out))
449 /* Count the number of lines and bytes to be deleted in this body*/
450 static int count_delete_lines (FILE * fp, BODY * b, long *length,
458 fseek (fp, b->offset, SEEK_SET);
459 for (l = b->length; l; l--) {
467 *length -= b->length - (84 + datelen);
468 /* Count the number of digits exceeding the first one to write the size */
469 for (l = 10; b->length >= l; l *= 10)
473 for (b = b->parts; b; b = b->next)
474 dellines += count_delete_lines (fp, b, length, datelen);
479 /* make a copy of a message
481 * fpout where to write output
482 * fpin where to get input
483 * hdr header of message being copied
484 * body structure of message being copied
486 * M_CM_NOHEADER don't copy header
487 * M_CM_PREFIX quote header and body
488 * M_CM_DECODE decode message body to text/plain
489 * M_CM_DISPLAY displaying output to the user
490 * M_CM_PRINTING printing the message
491 * M_CM_UPDATE update structures in memory after syncing
492 * M_CM_DECODE_PGP used for decoding PGP messages
493 * M_CM_CHARCONV perform character set conversion
494 * chflags flags to mutt_copy_header()
498 _mutt_copy_message (FILE * fpout, FILE * fpin, HEADER * hdr, BODY * body,
499 int flags, int chflags)
501 char prefix[SHORT_STRING];
503 long new_offset = -1;
505 if (flags & M_CM_PREFIX) {
506 if (option (OPTTEXTFLOWED))
507 strfcpy (prefix, ">", sizeof (prefix));
509 _mutt_make_string (prefix, sizeof (prefix), NONULL (Prefix), Context,
513 if ((flags & M_CM_NOHEADER) == 0) {
514 if (flags & M_CM_PREFIX)
515 chflags |= CH_PREFIX;
517 else if (hdr->attach_del && (chflags & CH_UPDATE_LEN)) {
519 long new_length = body->length;
520 char date[SHORT_STRING];
522 mutt_make_date (date, sizeof (date));
523 date[5] = date[safe_strlen (date) - 1] = '\"';
525 /* Count the number of lines and bytes to be deleted */
526 fseek (fpin, body->offset, SEEK_SET);
527 new_lines = hdr->lines -
528 count_delete_lines (fpin, body, &new_length, safe_strlen (date));
530 /* Copy the headers */
531 if (mutt_copy_header (fpin, hdr, fpout,
532 chflags | CH_NOLEN | CH_NONEWLINE, NULL))
534 fprintf (fpout, "Content-Length: %ld\n", new_length);
538 fprintf (fpout, "Lines: %d\n\n", new_lines);
539 if (ferror (fpout) || feof (fpout))
541 new_offset = ftell (fpout);
544 fseek (fpin, body->offset, SEEK_SET);
545 if (copy_delete_attach (body, fpin, fpout, date))
550 long fail = ((ftell (fpout) - new_offset) - new_length);
553 mutt_error ("The length calculation was wrong by %ld bytes", fail);
560 /* Update original message if we are sync'ing a mailfolder */
561 if (flags & M_CM_UPDATE) {
563 hdr->lines = new_lines;
564 body->offset = new_offset;
566 /* update the total size of the mailbox to reflect this deletion */
567 Context->size -= body->length - new_length;
569 * if the message is visible, update the visible size of the mailbox
572 if (Context->v2r[hdr->msgno] != -1)
573 Context->vsize -= body->length - new_length;
575 body->length = new_length;
576 mutt_free_body (&body->parts);
582 if (mutt_copy_header (fpin, hdr, fpout, chflags,
583 (chflags & CH_PREFIX) ? prefix : NULL) == -1)
586 new_offset = ftell (fpout);
589 if (flags & M_CM_DECODE) {
590 /* now make a text/plain version of the message */
591 memset (&s, 0, sizeof (STATE));
594 if (flags & M_CM_PREFIX)
596 if (flags & M_CM_DISPLAY)
597 s.flags |= M_DISPLAY;
598 if (flags & M_CM_PRINTING)
599 s.flags |= M_PRINTING;
600 if (flags & M_CM_WEED)
602 if (flags & M_CM_CHARCONV)
603 s.flags |= M_CHARCONV;
604 if (flags & M_CM_REPLYING)
605 s.flags |= M_REPLYING;
607 if (WithCrypto && flags & M_CM_VERIFY)
610 mutt_body_handler (body, &s);
613 && (flags & M_CM_DECODE_CRYPT) && (hdr->security & ENCRYPT)) {
617 if ((WithCrypto & APPLICATION_PGP)
618 && (flags & M_CM_DECODE_PGP) && (hdr->security & APPLICATION_PGP) &&
619 hdr->content->type == TYPEMULTIPART) {
620 if (crypt_pgp_decrypt_mime (fpin, &fp, hdr->content, &cur))
622 fputs ("Mime-Version: 1.0\n", fpout);
625 if ((WithCrypto & APPLICATION_SMIME)
626 && (flags & M_CM_DECODE_SMIME) && (hdr->security & APPLICATION_SMIME)
627 && hdr->content->type == TYPEAPPLICATION) {
628 if (crypt_smime_decrypt_mime (fpin, &fp, hdr->content, &cur))
632 mutt_write_mime_header (cur, fpout);
635 fseek (fp, cur->offset, 0);
636 if (mutt_copy_bytes (fp, fpout, cur->length) == -1) {
638 mutt_free_body (&cur);
641 mutt_free_body (&cur);
645 fseek (fpin, body->offset, 0);
646 if (flags & M_CM_PREFIX) {
648 size_t bytes = body->length;
650 fputs (prefix, fpout);
652 while ((c = fgetc (fpin)) != EOF && bytes--) {
655 fputs (prefix, fpout);
659 else if (mutt_copy_bytes (fpin, fpout, body->length) == -1)
663 if ((flags & M_CM_UPDATE) && (flags & M_CM_NOHEADER) == 0
664 && new_offset != -1) {
665 body->offset = new_offset;
666 mutt_free_body (&body->parts);
673 mutt_copy_message (FILE * fpout, CONTEXT * src, HEADER * hdr, int flags,
679 if ((msg = mx_open_message (src, hdr->msgno)) == NULL)
682 _mutt_copy_message (fpout, msg->fp, hdr, hdr->content, flags,
683 chflags)) == 0 && (ferror (fpout)
685 debug_print (1, ("_mutt_copy_message failed to detect EOF!\n"));
688 mx_close_message (&msg);
692 /* appends a copy of the given message to a mailbox
694 * dest destination mailbox
695 * fpin where to get input
697 * hdr message being copied
698 * body structure of message being copied
699 * flags mutt_copy_message() flags
700 * chflags mutt_copy_header() flags
704 _mutt_append_message (CONTEXT * dest, FILE * fpin, CONTEXT * src,
705 HEADER * hdr, BODY * body, int flags, int chflags)
711 mx_open_new_message (dest, hdr,
712 (src->magic == M_MBOX
713 || src->magic == M_MMDF) ? 0 : M_ADD_FROM)) ==
716 if (dest->magic == M_MBOX || dest->magic == M_MMDF)
717 chflags |= CH_FROM | CH_FORCE_FROM;
718 chflags |= (dest->magic == M_MAILDIR ? CH_NOSTATUS : CH_UPDATE);
719 r = _mutt_copy_message (msg->fp, fpin, hdr, body, flags, chflags);
720 if (mx_commit_message (msg, dest) != 0)
723 mx_close_message (&msg);
728 mutt_append_message (CONTEXT * dest, CONTEXT * src, HEADER * hdr, int cmflags,
734 if ((msg = mx_open_message (src, hdr->msgno)) == NULL)
737 _mutt_append_message (dest, msg->fp, src, hdr, hdr->content, cmflags,
739 mx_close_message (&msg);
744 * This function copies a message body, while deleting _in_the_copy_
745 * any attachments which are marked for deletion.
746 * Nothing is changed in the original message -- this is left to the caller.
748 * The function will return 0 on success and -1 on failure.
750 static int copy_delete_attach (BODY * b, FILE * fpin, FILE * fpout,
755 for (part = b->parts; part; part = part->next) {
756 if (part->deleted || part->parts) {
757 /* Copy till start of this part */
758 if (mutt_copy_bytes (fpin, fpout, part->hdr_offset - ftell (fpin)))
763 "Content-Type: message/external-body; access-type=x-mutt-deleted;\n"
764 "\texpiration=%s; length=%ld\n"
765 "\n", date + 5, part->length);
769 /* Copy the original mime headers */
770 if (mutt_copy_bytes (fpin, fpout, part->offset - ftell (fpin)))
773 /* Skip the deleted body */
774 fseek (fpin, part->offset + part->length, SEEK_SET);
777 if (copy_delete_attach (part, fpin, fpout, date))
783 /* Copy the last parts */
784 if (mutt_copy_bytes (fpin, fpout, b->offset + b->length - ftell (fpin)))
791 * This function is the equivalent of mutt_write_address_list(),
792 * but writes to a buffer instead of writing to a stream.
793 * mutt_write_address_list could be re-used if we wouldn't store
794 * all the decoded headers in a huge array, first.
799 static void format_address_header (char **h, ADDRESS * a)
801 char buf[HUGE_STRING];
805 int l, linelen, buflen, count;
807 linelen = safe_strlen (*h);
808 buflen = linelen + 3;
811 safe_realloc (h, buflen);
812 for (count = 0; a; a = a->next, count++) {
813 ADDRESS *tmp = a->next;
816 *buf = *cbuf = *c2buf = '\0';
817 rfc822_write_address (buf, sizeof (buf), a, 0);
820 l = safe_strlen (buf);
821 if (count && linelen + l > 74) {
822 strcpy (cbuf, "\n\t"); /* __STRCPY_CHECKED__ */
827 strcpy (cbuf, " "); /* __STRCPY_CHECKED__ */
832 if (!a->group && a->next && a->next->mailbox) {
835 strcpy (c2buf, ","); /* __STRCPY_CHECKED__ */
838 buflen += l + safe_strlen (cbuf) + safe_strlen (c2buf);
839 safe_realloc (h, buflen);
840 strcat (*h, cbuf); /* __STRCAT_CHECKED__ */
841 strcat (*h, buf); /* __STRCAT_CHECKED__ */
842 strcat (*h, c2buf); /* __STRCAT_CHECKED__ */
845 /* Space for this was allocated in the beginning of this function. */
846 strcat (*h, "\n"); /* __STRCAT_CHECKED__ */
849 static int address_header_decode (char **h)
856 switch (tolower ((unsigned char) *s)) {
859 if (ascii_strncasecmp (s, "return-path:", 12) == 0) {
863 else if (ascii_strncasecmp (s, "reply-to:", 9) == 0) {
871 if (ascii_strncasecmp (s, "from:", 5))
878 if (ascii_strncasecmp (s, "cc:", 3))
886 if (ascii_strncasecmp (s, "bcc:", 4))
893 if (ascii_strncasecmp (s, "sender:", 7))
900 if (ascii_strncasecmp (s, "to:", 3))
907 if (ascii_strncasecmp (s, "mail-followup-to:", 17))
916 if ((a = rfc822_parse_adrlist (a, s + l)) == NULL)
919 mutt_addrlist_to_local (a);
920 rfc2047_decode_adrlist (a);
922 *h = safe_calloc (1, l + 2);
924 strfcpy (*h, s, l + 1);
926 format_address_header (h, a);
928 rfc822_free_address (&a);