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.
10 #include <lib-lib/lib-lib.h>
12 #include <lib-mime/mime.h>
18 #include <lib-crypt/crypt.h>
19 #include "mutt_idna.h"
21 static int address_header_decode (char **str);
22 static int copy_delete_attach (BODY * b, FILE * fpin, FILE * fpout,
25 /* Ok, the only reason for not merging this with mutt_copy_header()
26 * below is to avoid creating a HEADER structure in message_handler().
29 mutt_copy_hdr (FILE* in, FILE* out, off_t off_start, off_t off_end,
30 int flags, const char *prefix) {
34 char buf[STRING]; /* should be long enough to get most fields in one pass */
40 char *this_one = NULL;
44 if (ftello (in) != off_start)
45 fseeko (in, off_start, 0);
51 (CH_REORDER | CH_WEED | CH_MIME | CH_DECODE | CH_PREFIX |
52 CH_WEED_DELIVERED)) == 0) {
53 /* Without these flags to complicate things
54 * we can do a more efficient line to line copying
56 while (ftello (in) < off_end) {
57 nl = strchr (buf, '\n');
59 if ((fgets (buf, sizeof (buf), in)) == NULL)
62 /* Is it the begining of a header? */
63 if (nl && buf[0] != ' ' && buf[0] != '\t') {
65 if (!from && m_strncmp("From ", buf, 5) == 0) {
66 if ((flags & CH_FROM) == 0)
70 else if (flags & (CH_NOQFROM) &&
71 ascii_strncasecmp (">From ", buf, 6) == 0)
74 else if (buf[0] == '\n' || (buf[0] == '\r' && buf[1] == '\n'))
75 break; /* end of header */
77 if ((flags & (CH_UPDATE | CH_XMIT | CH_NOSTATUS)) &&
78 (ascii_strncasecmp ("Status:", buf, 7) == 0 ||
79 ascii_strncasecmp ("X-Status:", buf, 9) == 0))
81 if ((flags & (CH_UPDATE_LEN | CH_XMIT | CH_NOLEN)) &&
82 (ascii_strncasecmp ("Content-Length:", buf, 15) == 0 ||
83 ascii_strncasecmp ("Lines:", buf, 6) == 0))
85 if ((flags & CH_UPDATE_REFS) &&
86 ascii_strncasecmp ("References:", buf, 11) == 0)
88 if ((flags & CH_UPDATE_IRT) &&
89 ascii_strncasecmp ("In-Reply-To:", buf, 12) == 0)
94 if (!ignore && fputs (buf, out) == EOF)
104 /* We are going to read and collect the headers in an array
105 * so we are able to do re-ordering.
106 * First count the number of entries in the array
108 if (flags & CH_REORDER) {
109 for (t = HeaderOrderList; t; t = t->next) {
114 headers = p_new(char *, hdr_count);
116 /* Read all the headers into the array */
117 while (ftello (in) < off_end) {
118 nl = strchr (buf, '\n');
121 if ((fgets (buf, sizeof (buf), in)) == NULL)
124 /* Is it the begining of a header? */
125 if (nl && buf[0] != ' ' && buf[0] != '\t') {
127 /* set curline to 1 for To:/Cc:/Bcc: and 0 otherwise */
128 curline = (flags & CH_WEED) && (ascii_strncmp ("To:", buf, 3) == 0 ||
129 ascii_strncmp ("Cc:", buf, 3) == 0 ||
130 ascii_strncmp ("Bcc:", buf, 4) == 0);
132 /* Do we have anything pending? */
134 if (flags & CH_DECODE) {
135 if (!address_header_decode (&this_one))
136 rfc2047_decode (&this_one);
140 headers[x] = this_one;
142 p_realloc(&headers[x], m_strlen(headers[x]) + m_strlen(this_one) + 1);
143 strcat(headers[x], this_one); /* __STRCAT_CHECKED__ */
152 if (!from && m_strncmp("From ", buf, 5) == 0) {
153 if ((flags & CH_FROM) == 0)
155 this_is_from = from = 1;
157 else if (buf[0] == '\n' || (buf[0] == '\r' && buf[1] == '\n'))
158 break; /* end of header */
160 /* note: CH_FROM takes precedence over header weeding. */
161 if (!((flags & CH_FROM) && (flags & CH_FORCE_FROM) && this_is_from) &&
163 mutt_matches_ignore (buf, Ignore) &&
164 !mutt_matches_ignore (buf, UnIgnore))
166 if ((flags & CH_WEED_DELIVERED) &&
167 ascii_strncasecmp ("Delivered-To:", buf, 13) == 0)
169 if ((flags & (CH_UPDATE | CH_XMIT | CH_NOSTATUS)) &&
170 (ascii_strncasecmp ("Status:", buf, 7) == 0 ||
171 ascii_strncasecmp ("X-Status:", buf, 9) == 0))
173 if ((flags & (CH_UPDATE_LEN | CH_XMIT | CH_NOLEN)) &&
174 (ascii_strncasecmp ("Content-Length:", buf, 15) == 0 ||
175 ascii_strncasecmp ("Lines:", buf, 6) == 0))
177 if ((flags & CH_MIME) &&
178 ((ascii_strncasecmp ("content-", buf, 8) == 0 &&
179 (ascii_strncasecmp ("transfer-encoding:", buf + 8, 18) == 0 ||
180 ascii_strncasecmp ("type:", buf + 8, 5) == 0)) ||
181 ascii_strncasecmp ("mime-version:", buf, 13) == 0))
183 if ((flags & CH_UPDATE_REFS) &&
184 ascii_strncasecmp ("References:", buf, 11) == 0)
186 if ((flags & CH_UPDATE_IRT) &&
187 ascii_strncasecmp ("In-Reply-To:", buf, 12) == 0)
190 /* Find x -- the array entry where this header is to be saved */
191 if (flags & CH_REORDER) {
192 for (t = HeaderOrderList, x = 0; (t); t = t->next, x++) {
193 if (!ascii_strncasecmp (buf, t->data, m_strlen(t->data))) {
200 } /* If beginning of header */
204 this_one = m_strdup(buf);
205 /* we do want to see all lines if this header doesn't feature
206 * abbreviations (curline is 0), $max_display_recips is 0 and
207 * while the number hasn't reached $max_display_recips yet */
208 else if (curline == 0 || MaxDispRecips == 0 || ++curline <= MaxDispRecips) {
209 p_realloc(&this_one, m_strlen(this_one) + m_strlen(buf) + 1);
210 strcat (this_one, buf); /* __STRCAT_CHECKED__ */
211 /* only for the first line which doesn't exeeds
212 * $max_display_recips: abbreviate it */
213 } else if (curline == MaxDispRecips+1) {
214 p_realloc(&this_one, m_strlen(this_one) + 5);
215 strcat (this_one, " ...");
218 } /* while (ftello (in) < off_end) */
220 /* Do we have anything pending? -- XXX, same code as in above in the loop. */
222 if (flags & CH_DECODE) {
223 if (!address_header_decode (&this_one))
224 rfc2047_decode (&this_one);
228 headers[x] = this_one;
230 p_realloc(&headers[x], m_strlen(headers[x]) + m_strlen(this_one) + 1);
231 strcat (headers[x], this_one); /* __STRCAT_CHECKED__ */
238 /* Now output the headers in order */
239 for (x = 0; x < hdr_count; x++) {
242 if (flags & CH_DECODE)
243 rfc2047_decode (&headers[x]);
246 /* We couldn't do the prefixing when reading because RFC 2047
247 * decoding may have concatenated lines.
249 if (flags & CH_PREFIX) {
250 char *ch = headers[x];
251 int print_prefix = 1;
255 if (fputs (prefix, out) == EOF) {
262 if (*ch == '\n' && ch[1])
265 if (putc (*ch++, out) == EOF) {
274 if (fputs (headers[x], out) == EOF) {
282 /* Free in a separate loop to be sure that all headers are freed
283 * in case of error. */
284 for (x = 0; x < hdr_count; x++)
285 p_delete(&headers[x]);
294 CH_DECODE RFC2047 header decoding
295 CH_FROM retain the "From " message separator
296 CH_FORCE_FROM give CH_FROM precedence over CH_WEED
297 CH_MIME ignore MIME fields
298 CH_NOLEN don't write Content-Length: and Lines:
299 CH_NONEWLINE don't output a newline after the header
300 CH_NOSTATUS ignore the Status: and X-Status:
301 CH_PREFIX quote header with $indent_str
302 CH_REORDER output header in order specified by `hdr_order'
303 CH_TXTPLAIN generate text/plain MIME headers [hack alert.]
304 CH_UPDATE write new Status: and X-Status:
305 CH_UPDATE_LEN write new Content-Length: and Lines:
306 CH_XMIT ignore Lines: and Content-Length:
307 CH_WEED do header weeding
308 CH_NOQFROM ignore ">From " line
309 CH_UPDATE_IRT update the In-Reply-To: header
310 CH_UPDATE_REFS update the References: header
313 string to use if CH_PREFIX is set
317 mutt_copy_header (FILE * in, HEADER * h, FILE * out, int flags,
320 char buffer[SHORT_STRING];
323 flags |= (h->env->irt_changed ? CH_UPDATE_IRT : 0) |
324 (h->env->refs_changed ? CH_UPDATE_REFS : 0);
326 if (mutt_copy_hdr (in, out, h->offset, h->content->offset, flags, prefix) ==
330 if (flags & CH_TXTPLAIN) {
331 char chsbuf[SHORT_STRING];
333 fputs ("MIME-Version: 1.0\n", out);
334 fputs ("Content-Transfer-Encoding: 8bit\n", out);
335 fputs ("Content-Type: text/plain; charset=", out);
336 charset_canonicalize(chsbuf, sizeof (chsbuf), Charset);
337 rfc822_strcpy(buffer, sizeof(buffer), chsbuf, MimeSpecials);
341 if (ferror (out) != 0 || feof (out) != 0)
346 if (flags & CH_UPDATE) {
347 if ((flags & CH_NOSTATUS) == 0) {
348 if (h->env->irt_changed && h->env->in_reply_to) {
349 string_list_t *listp = h->env->in_reply_to;
351 if (fputs ("In-Reply-To: ", out) == EOF)
354 for (; listp; listp = listp->next)
355 if ((fputs (listp->data, out) == EOF) || (fputc (' ', out) == EOF))
358 if (fputc ('\n', out) == EOF)
362 if (h->env->refs_changed && h->env->references) {
363 string_list_t *listp = h->env->references, *refs = NULL, *t;
365 if (fputs ("References: ", out) == EOF)
368 /* Mutt stores references in reverse order, thus we create
369 * a reordered refs list that we can put in the headers */
370 for (; listp; listp = listp->next, refs = t) {
371 t = p_new(string_list_t, 1);
372 t->data = listp->data;
376 for (; refs; refs = refs->next)
377 if ((fputs (refs->data, out) == EOF) || (fputc (' ', out) == EOF))
380 /* clearing refs from memory */
381 for (t = refs; refs; refs = t->next, t = refs)
384 if (fputc ('\n', out) == EOF)
388 if (h->old || h->read) {
389 if (fputs ("Status: ", out) == EOF)
393 if (fputs ("RO", out) == EOF)
397 if (fputc ('O', out) == EOF)
401 if (fputc ('\n', out) == EOF)
405 if (h->flagged || h->replied) {
406 if (fputs ("X-Status: ", out) == EOF)
410 if (fputc ('A', out) == EOF)
415 if (fputc ('F', out) == EOF)
419 if (fputc ('\n', out) == EOF)
425 if (flags & CH_UPDATE_LEN && (flags & CH_NOLEN) == 0) {
426 fprintf (out, "Content-Length: %lld\n", h->content->length);
427 if (h->lines != 0 || h->content->length == 0)
428 fprintf (out, "Lines: %d\n", h->lines);
431 if ((flags & CH_NONEWLINE) == 0) {
432 if (flags & CH_PREFIX)
434 if (fputc ('\n', out) == EOF) /* add header terminator */
438 if (ferror (out) || feof (out))
444 /* Count the number of lines and bytes to be deleted in this body*/
445 static int count_delete_lines (FILE * fp, BODY * b, off_t *length,
453 fseeko (fp, b->offset, SEEK_SET);
454 for (l = b->length; l; l--) {
462 *length -= b->length - (84 + datelen);
463 /* Count the number of digits exceeding the first one to write the size */
464 for (l = 10; b->length >= l; l *= 10)
468 for (b = b->parts; b; b = b->next)
469 dellines += count_delete_lines (fp, b, length, datelen);
474 /* make a copy of a message
476 * fpout where to write output
477 * fpin where to get input
478 * hdr header of message being copied
479 * body structure of message being copied
481 * M_CM_NOHEADER don't copy header
482 * M_CM_PREFIX quote header and body
483 * M_CM_DECODE decode message body to text/plain
484 * M_CM_DISPLAY displaying output to the user
485 * M_CM_PRINTING printing the message
486 * M_CM_UPDATE update structures in memory after syncing
487 * M_CM_DECODE_PGP used for decoding PGP messages
488 * M_CM_CHARCONV perform character set conversion
489 * chflags flags to mutt_copy_header()
493 _mutt_copy_message (FILE * fpout, FILE * fpin, HEADER * hdr, BODY * body,
494 int flags, int chflags)
496 char prefix[SHORT_STRING];
498 off_t new_offset = -1;
501 if (flags & M_CM_PREFIX) {
502 if (option (OPTTEXTFLOWED))
503 m_strcpy(prefix, sizeof(prefix), ">");
505 _mutt_make_string (prefix, sizeof (prefix), NONULL (Prefix), Context,
509 if ((flags & M_CM_NOHEADER) == 0) {
510 if (flags & M_CM_PREFIX)
511 chflags |= CH_PREFIX;
513 else if (hdr->attach_del && (chflags & CH_UPDATE_LEN)) {
515 off_t new_length = body->length;
516 char date[SHORT_STRING];
518 mutt_make_date (date, sizeof (date));
519 date[5] = date[m_strlen(date) - 1] = '\"';
521 /* Count the number of lines and bytes to be deleted */
522 fseeko (fpin, body->offset, SEEK_SET);
523 new_lines = hdr->lines -
524 count_delete_lines (fpin, body, &new_length, m_strlen(date));
526 /* Copy the headers */
527 if (mutt_copy_header (fpin, hdr, fpout,
528 chflags | CH_NOLEN | CH_NONEWLINE, NULL))
530 fprintf (fpout, "Content-Length: %lld\n", new_length);
534 fprintf (fpout, "Lines: %d\n\n", new_lines);
535 if (ferror (fpout) || feof (fpout))
537 new_offset = ftello (fpout);
540 fseeko (fpin, body->offset, SEEK_SET);
541 if (copy_delete_attach (body, fpin, fpout, date))
544 /* Update original message if we are sync'ing a mailfolder */
545 if (flags & M_CM_UPDATE) {
547 hdr->lines = new_lines;
548 body->offset = new_offset;
550 /* update the total size of the mailbox to reflect this deletion */
551 Context->size -= body->length - new_length;
553 * if the message is visible, update the visible size of the mailbox
556 if (Context->v2r[hdr->msgno] != -1)
557 Context->vsize -= body->length - new_length;
559 body->length = new_length;
560 body_list_wipe(&body->parts);
566 if (mutt_copy_header (fpin, hdr, fpout, chflags,
567 (chflags & CH_PREFIX) ? prefix : NULL) == -1)
570 new_offset = ftello (fpout);
573 if (flags & M_CM_DECODE) {
574 /* now make a text/plain version of the message */
578 if (flags & M_CM_PREFIX)
580 if (flags & M_CM_DISPLAY)
581 s.flags |= M_DISPLAY;
582 if (flags & M_CM_PRINTING)
583 s.flags |= M_PRINTING;
584 if (flags & M_CM_WEED)
586 if (flags & M_CM_CHARCONV)
587 s.flags |= M_CHARCONV;
588 if (flags & M_CM_REPLYING)
589 s.flags |= M_REPLYING;
591 if (flags & M_CM_VERIFY)
594 rc = mutt_body_handler (body, &s);
596 else if ((flags & M_CM_DECODE_CRYPT) && (hdr->security & ENCRYPT)) {
600 if ((flags & M_CM_DECODE_PGP) && (hdr->security & APPLICATION_PGP) &&
601 hdr->content->type == TYPEMULTIPART) {
602 if (crypt_pgp_decrypt_mime (fpin, &fp, hdr->content, &cur))
604 fputs ("MIME-Version: 1.0\n", fpout);
607 if ((flags & M_CM_DECODE_SMIME) && (hdr->security & APPLICATION_SMIME)
608 && hdr->content->type == TYPEAPPLICATION) {
609 if (crypt_smime_decrypt_mime (fpin, &fp, hdr->content, &cur))
613 mutt_write_mime_header (cur, fpout);
616 fseeko (fp, cur->offset, 0);
617 if (mutt_copy_bytes (fp, fpout, cur->length) == -1) {
619 body_list_wipe(&cur);
622 body_list_wipe(&cur);
626 fseeko (fpin, body->offset, 0);
627 if (flags & M_CM_PREFIX) {
629 size_t bytes = body->length;
631 fputs (prefix, fpout);
633 while ((c = fgetc (fpin)) != EOF && bytes--) {
636 fputs (prefix, fpout);
640 else if (mutt_copy_bytes (fpin, fpout, body->length) == -1)
644 if ((flags & M_CM_UPDATE) && (flags & M_CM_NOHEADER) == 0
645 && new_offset != -1) {
646 body->offset = new_offset;
647 body_list_wipe(&body->parts);
654 mutt_copy_message (FILE * fpout, CONTEXT * src, HEADER * hdr, int flags,
660 if ((msg = mx_open_message (src, hdr->msgno)) == NULL)
663 _mutt_copy_message (fpout, msg->fp, hdr, hdr->content, flags,
664 chflags)) == 0 && (ferror (fpout)
668 mx_close_message (&msg);
672 /* appends a copy of the given message to a mailbox
674 * dest destination mailbox
675 * fpin where to get input
677 * hdr message being copied
678 * body structure of message being copied
679 * flags mutt_copy_message() flags
680 * chflags mutt_copy_header() flags
684 _mutt_append_message (CONTEXT * dest, FILE * fpin, CONTEXT * src __attribute__ ((unused)),
685 HEADER * hdr, BODY * body, int flags, int chflags) {
690 fseeko(fpin, hdr->offset, 0);
691 if (fgets (buf, sizeof (buf), fpin) == NULL)
693 if ((msg = mx_open_new_message (dest, hdr, is_from (buf, NULL, 0, NULL) ? 0 : M_ADD_FROM)) == NULL)
695 if (dest->magic == M_MBOX || dest->magic == M_MMDF)
696 chflags |= CH_FROM | CH_FORCE_FROM;
697 chflags |= (dest->magic == M_MAILDIR ? CH_NOSTATUS : CH_UPDATE);
698 r = _mutt_copy_message (msg->fp, fpin, hdr, body, flags, chflags);
699 if (mx_commit_message (msg, dest) != 0)
702 mx_close_message (&msg);
707 mutt_append_message (CONTEXT * dest, CONTEXT * src, HEADER * hdr, int cmflags,
713 if ((msg = mx_open_message (src, hdr->msgno)) == NULL)
716 _mutt_append_message (dest, msg->fp, src, hdr, hdr->content, cmflags,
718 mx_close_message (&msg);
723 * This function copies a message body, while deleting _in_the_copy_
724 * any attachments which are marked for deletion.
725 * Nothing is changed in the original message -- this is left to the caller.
727 * The function will return 0 on success and -1 on failure.
729 static int copy_delete_attach (BODY * b, FILE * fpin, FILE * fpout,
734 for (part = b->parts; part; part = part->next) {
735 if (part->deleted || part->parts) {
736 /* Copy till start of this part */
737 if (mutt_copy_bytes (fpin, fpout, part->hdr_offset - ftello (fpin)))
742 "Content-Type: message/external-body; access-type=x-mutt-deleted;\n"
743 "\texpiration=%s; length=%lld\n"
744 "\n", date + 5, part->length);
748 /* Copy the original mime headers */
749 if (mutt_copy_bytes (fpin, fpout, part->offset - ftello (fpin)))
752 /* Skip the deleted body */
753 fseeko (fpin, part->offset + part->length, SEEK_SET);
756 if (copy_delete_attach (part, fpin, fpout, date))
762 /* Copy the last parts */
763 if (mutt_copy_bytes (fpin, fpout, b->offset + b->length - ftello (fpin)))
770 * This function is the equivalent of mutt_write_address_list(),
771 * but writes to a buffer instead of writing to a stream.
772 * mutt_write_address_list could be re-used if we wouldn't store
773 * all the decoded headers in a huge array, first.
778 static void format_address_header (char **h, address_t * a)
780 char buf[HUGE_STRING];
784 int l, linelen, buflen, count;
786 linelen = m_strlen(*h);
787 buflen = linelen + 3;
790 p_realloc(h, buflen);
791 for (count = 0; a; a = a->next, count++) {
792 address_t *tmp = a->next;
795 *buf = *cbuf = *c2buf = '\0';
796 rfc822_write_address (buf, sizeof (buf), a, 0);
800 if (count && linelen + l > 74) {
801 strcpy (cbuf, "\n\t"); /* __STRCPY_CHECKED__ */
806 strcpy (cbuf, " "); /* __STRCPY_CHECKED__ */
811 if (!a->group && a->next && a->next->mailbox) {
814 strcpy (c2buf, ","); /* __STRCPY_CHECKED__ */
817 buflen += l + m_strlen(cbuf) + m_strlen(c2buf);
818 p_realloc(h, buflen);
819 strcat (*h, cbuf); /* __STRCAT_CHECKED__ */
820 strcat (*h, buf); /* __STRCAT_CHECKED__ */
821 strcat (*h, c2buf); /* __STRCAT_CHECKED__ */
824 /* Space for this was allocated in the beginning of this function. */
825 strcat (*h, "\n"); /* __STRCAT_CHECKED__ */
828 static int address_header_decode (char **h)
835 switch (tolower ((unsigned char) *s)) {
838 if (ascii_strncasecmp (s, "return-path:", 12) == 0) {
842 else if (ascii_strncasecmp (s, "reply-to:", 9) == 0) {
850 if (ascii_strncasecmp (s, "from:", 5))
857 if (ascii_strncasecmp (s, "cc:", 3))
865 if (ascii_strncasecmp (s, "bcc:", 4))
872 if (ascii_strncasecmp (s, "sender:", 7))
879 if (ascii_strncasecmp (s, "to:", 3))
886 if (ascii_strncasecmp (s, "mail-followup-to:", 17))
895 if ((a = rfc822_parse_adrlist (a, s + l)) == NULL)
898 mutt_addrlist_to_local (a);
899 rfc2047_decode_adrlist (a);
901 *h = p_dupstr(s, l + 1);
903 format_address_header (h, a);
905 address_list_wipe(&a);