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>
13 #include <lib-mx/mx.h>
18 #include <lib-crypt/crypt.h>
19 #include <lib-ui/curses.h>
20 #include "mutt_idna.h"
22 static int address_header_decode (char **str);
23 static int copy_delete_attach (BODY * b, FILE * fpin, FILE * fpout,
26 /* Ok, the only reason for not merging this with mutt_copy_header()
27 * below is to avoid creating a HEADER structure in message_handler().
30 mutt_copy_hdr (FILE* in, FILE* out, off_t off_start, off_t off_end,
31 int flags, const char *prefix) {
35 char buf[STRING]; /* should be long enough to get most fields in one pass */
41 char *this_one = NULL;
45 if (ftello (in) != off_start)
46 fseeko (in, off_start, 0);
52 (CH_REORDER | CH_WEED | CH_MIME | CH_DECODE | CH_PREFIX |
53 CH_WEED_DELIVERED)) == 0) {
54 /* Without these flags to complicate things
55 * we can do a more efficient line to line copying
57 while (ftello (in) < off_end) {
58 eol = strchr (buf, '\n');
60 if ((fgets (buf, sizeof (buf), in)) == NULL)
63 /* Is it the begining of a header? */
64 if (eol && buf[0] != ' ' && buf[0] != '\t') {
66 if (!from && m_strncmp("From ", buf, 5) == 0) {
67 if ((flags & CH_FROM) == 0)
71 else if (flags & (CH_NOQFROM) &&
72 ascii_strncasecmp (">From ", buf, 6) == 0)
75 else if (buf[0] == '\n' || (buf[0] == '\r' && buf[1] == '\n'))
76 break; /* end of header */
78 if ((flags & (CH_UPDATE | CH_XMIT | CH_NOSTATUS)) &&
79 (ascii_strncasecmp ("Status:", buf, 7) == 0 ||
80 ascii_strncasecmp ("X-Status:", buf, 9) == 0))
82 if ((flags & (CH_UPDATE_LEN | CH_XMIT | CH_NOLEN)) &&
83 (ascii_strncasecmp ("Content-Length:", buf, 15) == 0 ||
84 ascii_strncasecmp ("Lines:", buf, 6) == 0))
86 if ((flags & CH_UPDATE_REFS) &&
87 ascii_strncasecmp ("References:", buf, 11) == 0)
89 if ((flags & CH_UPDATE_IRT) &&
90 ascii_strncasecmp ("In-Reply-To:", buf, 12) == 0)
95 if (!ignore && fputs (buf, out) == EOF)
105 /* We are going to read and collect the headers in an array
106 * so we are able to do re-ordering.
107 * First count the number of entries in the array
109 if (flags & CH_REORDER) {
110 for (t = HeaderOrderList; t; t = t->next) {
115 headers = p_new(char *, hdr_count);
117 /* Read all the headers into the array */
118 while (ftello (in) < off_end) {
119 eol = strchr (buf, '\n');
122 if ((fgets (buf, sizeof (buf), in)) == NULL)
125 /* Is it the begining of a header? */
126 if (eol && buf[0] != ' ' && buf[0] != '\t') {
128 /* set curline to 1 for To:/Cc:/Bcc: and 0 otherwise */
129 curline = (flags & CH_WEED) && (m_strncmp("To:", buf, 3) == 0 ||
130 m_strncmp("Cc:", buf, 3) == 0 ||
131 m_strncmp("Bcc:", buf, 4) == 0);
133 /* Do we have anything pending? */
135 if (flags & CH_DECODE) {
136 if (!address_header_decode (&this_one))
137 rfc2047_decode (&this_one);
141 headers[x] = this_one;
143 p_realloc(&headers[x], m_strlen(headers[x]) + m_strlen(this_one) + 1);
144 strcat(headers[x], this_one); /* __STRCAT_CHECKED__ */
153 if (!from && m_strncmp("From ", buf, 5) == 0) {
154 if ((flags & CH_FROM) == 0)
156 this_is_from = from = 1;
158 else if (buf[0] == '\n' || (buf[0] == '\r' && buf[1] == '\n'))
159 break; /* end of header */
161 /* note: CH_FROM takes precedence over header weeding. */
162 if (!((flags & CH_FROM) && (flags & CH_FORCE_FROM) && this_is_from) &&
164 mutt_matches_ignore (buf, Ignore) &&
165 !mutt_matches_ignore (buf, UnIgnore))
167 if ((flags & CH_WEED_DELIVERED) &&
168 ascii_strncasecmp ("Delivered-To:", buf, 13) == 0)
170 if ((flags & (CH_UPDATE | CH_XMIT | CH_NOSTATUS)) &&
171 (ascii_strncasecmp ("Status:", buf, 7) == 0 ||
172 ascii_strncasecmp ("X-Status:", buf, 9) == 0))
174 if ((flags & (CH_UPDATE_LEN | CH_XMIT | CH_NOLEN)) &&
175 (ascii_strncasecmp ("Content-Length:", buf, 15) == 0 ||
176 ascii_strncasecmp ("Lines:", buf, 6) == 0))
178 if ((flags & CH_MIME) &&
179 ((ascii_strncasecmp ("content-", buf, 8) == 0 &&
180 (ascii_strncasecmp ("transfer-encoding:", buf + 8, 18) == 0 ||
181 ascii_strncasecmp ("type:", buf + 8, 5) == 0)) ||
182 ascii_strncasecmp ("mime-version:", buf, 13) == 0))
184 if ((flags & CH_UPDATE_REFS) &&
185 ascii_strncasecmp ("References:", buf, 11) == 0)
187 if ((flags & CH_UPDATE_IRT) &&
188 ascii_strncasecmp ("In-Reply-To:", buf, 12) == 0)
191 /* Find x -- the array entry where this header is to be saved */
192 if (flags & CH_REORDER) {
193 for (t = HeaderOrderList, x = 0; (t); t = t->next, x++) {
194 if (!ascii_strncasecmp (buf, t->data, m_strlen(t->data))) {
201 } /* If beginning of header */
205 this_one = m_strdup(buf);
206 /* we do want to see all lines if this header doesn't feature
207 * abbreviations (curline is 0), $max_display_recips is 0 and
208 * while the number hasn't reached $max_display_recips yet */
209 else if (curline == 0 || MaxDispRecips == 0 || ++curline <= MaxDispRecips) {
210 p_realloc(&this_one, m_strlen(this_one) + m_strlen(buf) + 1);
211 strcat (this_one, buf); /* __STRCAT_CHECKED__ */
212 /* only for the first line which doesn't exeeds
213 * $max_display_recips: abbreviate it */
214 } else if (curline == MaxDispRecips+1) {
215 p_realloc(&this_one, m_strlen(this_one) + 5);
216 strcat (this_one, " ...");
219 } /* while (ftello (in) < off_end) */
221 /* Do we have anything pending? -- XXX, same code as in above in the loop. */
223 if (flags & CH_DECODE) {
224 if (!address_header_decode (&this_one))
225 rfc2047_decode (&this_one);
229 headers[x] = this_one;
231 p_realloc(&headers[x], m_strlen(headers[x]) + m_strlen(this_one) + 1);
232 strcat (headers[x], this_one); /* __STRCAT_CHECKED__ */
239 /* Now output the headers in order */
240 for (x = 0; x < hdr_count; x++) {
242 /* We couldn't do the prefixing when reading because RFC 2047
243 * decoding may have concatenated lines.
245 if (flags & CH_PREFIX) {
246 char *ch = headers[x];
247 int print_prefix = 1;
251 if (fputs (prefix, out) == EOF) {
258 if (*ch == '\n' && ch[1])
261 if (putc (*ch++, out) == EOF) {
270 if (fputs (headers[x], out) == EOF) {
278 /* Free in a separate loop to be sure that all headers are freed
279 * in case of error. */
280 for (x = 0; x < hdr_count; x++)
281 p_delete(&headers[x]);
290 CH_DECODE RFC2047 header decoding
291 CH_FROM retain the "From " message separator
292 CH_FORCE_FROM give CH_FROM precedence over CH_WEED
293 CH_MIME ignore MIME fields
294 CH_NOLEN don't write Content-Length: and Lines:
295 CH_NONEWLINE don't output a newline after the header
296 CH_NOSTATUS ignore the Status: and X-Status:
297 CH_PREFIX quote header with $indent_str
298 CH_REORDER output header in order specified by `hdr_order'
299 CH_TXTPLAIN generate text/plain MIME headers [hack alert.]
300 CH_UPDATE write new Status: and X-Status:
301 CH_UPDATE_LEN write new Content-Length: and Lines:
302 CH_XMIT ignore Lines: and Content-Length:
303 CH_WEED do header weeding
304 CH_NOQFROM ignore ">From " line
305 CH_UPDATE_IRT update the In-Reply-To: header
306 CH_UPDATE_REFS update the References: header
309 string to use if CH_PREFIX is set
313 mutt_copy_header (FILE * in, HEADER * h, FILE * out, int flags,
316 char buffer[SHORT_STRING];
319 flags |= (h->env->irt_changed ? CH_UPDATE_IRT : 0) |
320 (h->env->refs_changed ? CH_UPDATE_REFS : 0);
322 if (mutt_copy_hdr (in, out, h->offset, h->content->offset, flags, prefix) ==
326 if (flags & CH_TXTPLAIN) {
327 char chsbuf[SHORT_STRING];
329 fputs ("MIME-Version: 1.0\n", out);
330 fputs ("Content-Transfer-Encoding: 8bit\n", out);
331 fputs ("Content-Type: text/plain; charset=", out);
332 charset_canonicalize(chsbuf, sizeof (chsbuf), Charset);
333 rfc822_strcpy(buffer, sizeof(buffer), chsbuf, MimeSpecials);
337 if (ferror (out) != 0 || feof (out) != 0)
342 if (flags & CH_UPDATE) {
343 if ((flags & CH_NOSTATUS) == 0) {
344 if (h->env->irt_changed && h->env->in_reply_to) {
345 string_list_t *listp = h->env->in_reply_to;
347 if (fputs ("In-Reply-To: ", out) == EOF)
350 for (; listp; listp = listp->next)
351 if ((fputs (listp->data, out) == EOF) || (fputc (' ', out) == EOF))
354 if (fputc ('\n', out) == EOF)
358 if (h->env->refs_changed && h->env->references) {
359 string_list_t *listp = h->env->references, *refs = NULL, *t;
361 if (fputs ("References: ", out) == EOF)
364 /* Mutt stores references in reverse order, thus we create
365 * a reordered refs list that we can put in the headers */
366 for (; listp; listp = listp->next, refs = t) {
367 t = p_new(string_list_t, 1);
368 t->data = listp->data;
372 for (; refs; refs = refs->next)
373 if ((fputs (refs->data, out) == EOF) || (fputc (' ', out) == EOF))
376 /* clearing refs from memory */
377 for (t = refs; refs; refs = t->next, t = refs)
380 if (fputc ('\n', out) == EOF)
384 if (h->old || h->read) {
385 if (fputs ("Status: ", out) == EOF)
389 if (fputs ("RO", out) == EOF)
393 if (fputc ('O', out) == EOF)
397 if (fputc ('\n', out) == EOF)
401 if (h->flagged || h->replied) {
402 if (fputs ("X-Status: ", out) == EOF)
406 if (fputc ('A', out) == EOF)
411 if (fputc ('F', out) == EOF)
415 if (fputc ('\n', out) == EOF)
421 if (flags & CH_UPDATE_LEN && (flags & CH_NOLEN) == 0) {
422 fprintf (out, "Content-Length: %lld\n", h->content->length);
423 if (h->lines != 0 || h->content->length == 0)
424 fprintf (out, "Lines: %d\n", h->lines);
427 if ((flags & CH_NONEWLINE) == 0) {
428 if (flags & CH_PREFIX)
430 if (fputc ('\n', out) == EOF) /* add header terminator */
434 if (ferror (out) || feof (out))
440 /* Count the number of lines and bytes to be deleted in this body*/
441 static int count_delete_lines (FILE * fp, BODY * b, off_t *length,
449 fseeko (fp, b->offset, SEEK_SET);
450 for (l = b->length; l; l--) {
458 *length -= b->length - (84 + datelen);
459 /* Count the number of digits exceeding the first one to write the size */
460 for (l = 10; b->length >= l; l *= 10)
464 for (b = b->parts; b; b = b->next)
465 dellines += count_delete_lines (fp, b, length, datelen);
470 /* make a copy of a message
472 * fpout where to write output
473 * fpin where to get input
474 * hdr header of message being copied
475 * body structure of message being copied
477 * M_CM_NOHEADER don't copy header
478 * M_CM_PREFIX quote header and body
479 * M_CM_DECODE decode message body to text/plain
480 * M_CM_DISPLAY displaying output to the user
481 * M_CM_PRINTING printing the message
482 * M_CM_UPDATE update structures in memory after syncing
483 * M_CM_DECODE_PGP used for decoding PGP messages
484 * M_CM_CHARCONV perform character set conversion
485 * chflags flags to mutt_copy_header()
489 _mutt_copy_message (FILE * fpout, FILE * fpin, HEADER * hdr, BODY * body,
490 int flags, int chflags)
492 char prefix[SHORT_STRING];
494 off_t new_offset = -1;
497 if (flags & M_CM_PREFIX) {
498 if (option (OPTTEXTFLOWED))
499 m_strcpy(prefix, sizeof(prefix), ">");
501 _mutt_make_string (prefix, sizeof (prefix), NONULL (Prefix), Context,
505 if ((flags & M_CM_NOHEADER) == 0) {
506 if (flags & M_CM_PREFIX)
507 chflags |= CH_PREFIX;
509 else if (hdr->attach_del && (chflags & CH_UPDATE_LEN)) {
511 off_t new_length = body->length;
512 char date[SHORT_STRING];
514 mutt_make_date (date, sizeof (date));
515 date[5] = date[m_strlen(date) - 1] = '\"';
517 /* Count the number of lines and bytes to be deleted */
518 fseeko (fpin, body->offset, SEEK_SET);
519 new_lines = hdr->lines -
520 count_delete_lines (fpin, body, &new_length, m_strlen(date));
522 /* Copy the headers */
523 if (mutt_copy_header (fpin, hdr, fpout,
524 chflags | CH_NOLEN | CH_NONEWLINE, NULL))
526 fprintf (fpout, "Content-Length: %lld\n", new_length);
530 fprintf (fpout, "Lines: %d\n\n", new_lines);
531 if (ferror (fpout) || feof (fpout))
533 new_offset = ftello (fpout);
536 fseeko (fpin, body->offset, SEEK_SET);
537 if (copy_delete_attach (body, fpin, fpout, date))
540 /* Update original message if we are sync'ing a mailfolder */
541 if (flags & M_CM_UPDATE) {
543 hdr->lines = new_lines;
544 body->offset = new_offset;
546 /* update the total size of the mailbox to reflect this deletion */
547 Context->size -= body->length - new_length;
549 * if the message is visible, update the visible size of the mailbox
552 if (Context->v2r[hdr->msgno] != -1)
553 Context->vsize -= body->length - new_length;
555 body->length = new_length;
556 body_list_wipe(&body->parts);
562 if (mutt_copy_header (fpin, hdr, fpout, chflags,
563 (chflags & CH_PREFIX) ? prefix : NULL) == -1)
566 new_offset = ftello (fpout);
569 if (flags & M_CM_DECODE) {
570 /* now make a text/plain version of the message */
574 if (flags & M_CM_PREFIX)
576 if (flags & M_CM_DISPLAY)
577 s.flags |= M_DISPLAY;
578 if (flags & M_CM_PRINTING)
579 s.flags |= M_PRINTING;
580 if (flags & M_CM_WEED)
582 if (flags & M_CM_CHARCONV)
583 s.flags |= M_CHARCONV;
584 if (flags & M_CM_REPLYING)
585 s.flags |= M_REPLYING;
587 if (flags & M_CM_VERIFY)
590 rc = mutt_body_handler (body, &s);
592 else if ((flags & M_CM_DECODE_CRYPT) && (hdr->security & ENCRYPT)) {
596 if ((flags & M_CM_DECODE_PGP) && (hdr->security & APPLICATION_PGP) &&
597 hdr->content->type == TYPEMULTIPART) {
598 if (crypt_pgp_decrypt_mime (fpin, &fp, hdr->content, &cur))
600 fputs ("MIME-Version: 1.0\n", fpout);
603 if ((flags & M_CM_DECODE_SMIME) && (hdr->security & APPLICATION_SMIME)
604 && hdr->content->type == TYPEAPPLICATION) {
605 if (crypt_smime_decrypt_mime (fpin, &fp, hdr->content, &cur))
609 mutt_write_mime_header (cur, fpout);
612 fseeko (fp, cur->offset, 0);
613 if (mutt_copy_bytes (fp, fpout, cur->length) == -1) {
615 body_list_wipe(&cur);
618 body_list_wipe(&cur);
622 fseeko (fpin, body->offset, 0);
623 if (flags & M_CM_PREFIX) {
625 size_t bytes = body->length;
627 fputs (prefix, fpout);
629 while ((c = fgetc (fpin)) != EOF && bytes--) {
632 fputs (prefix, fpout);
636 else if (mutt_copy_bytes (fpin, fpout, body->length) == -1)
640 if ((flags & M_CM_UPDATE) && (flags & M_CM_NOHEADER) == 0
641 && new_offset != -1) {
642 body->offset = new_offset;
643 body_list_wipe(&body->parts);
650 mutt_copy_message (FILE * fpout, CONTEXT * src, HEADER * hdr, int flags,
656 if ((msg = mx_open_message (src, hdr->msgno)) == NULL)
659 _mutt_copy_message (fpout, msg->fp, hdr, hdr->content, flags,
660 chflags)) == 0 && (ferror (fpout)
664 mx_close_message (&msg);
668 /* appends a copy of the given message to a mailbox
670 * dest destination mailbox
671 * fpin where to get input
673 * hdr message being copied
674 * body structure of message being copied
675 * flags mutt_copy_message() flags
676 * chflags mutt_copy_header() flags
680 _mutt_append_message (CONTEXT * dest, FILE * fpin, CONTEXT * src __attribute__ ((unused)),
681 HEADER * hdr, BODY * body, int flags, int chflags) {
686 fseeko(fpin, hdr->offset, 0);
687 if (fgets (buf, sizeof (buf), fpin) == NULL)
689 if ((msg = mx_open_new_message (dest, hdr, is_from (buf, NULL, 0, NULL) ? 0 : M_ADD_FROM)) == NULL)
691 if (dest->magic == M_MBOX || dest->magic == M_MMDF)
692 chflags |= CH_FROM | CH_FORCE_FROM;
693 chflags |= (dest->magic == M_MAILDIR ? CH_NOSTATUS : CH_UPDATE);
694 r = _mutt_copy_message (msg->fp, fpin, hdr, body, flags, chflags);
695 if (mx_commit_message (msg, dest) != 0)
698 mx_close_message (&msg);
703 mutt_append_message (CONTEXT * dest, CONTEXT * src, HEADER * hdr, int cmflags,
709 if ((msg = mx_open_message (src, hdr->msgno)) == NULL)
712 _mutt_append_message (dest, msg->fp, src, hdr, hdr->content, cmflags,
714 mx_close_message (&msg);
719 * This function copies a message body, while deleting _in_the_copy_
720 * any attachments which are marked for deletion.
721 * Nothing is changed in the original message -- this is left to the caller.
723 * The function will return 0 on success and -1 on failure.
725 static int copy_delete_attach (BODY * b, FILE * fpin, FILE * fpout,
730 for (part = b->parts; part; part = part->next) {
731 if (part->deleted || part->parts) {
732 /* Copy till start of this part */
733 if (mutt_copy_bytes (fpin, fpout, part->hdr_offset - ftello (fpin)))
738 "Content-Type: message/external-body; access-type=x-mutt-deleted;\n"
739 "\texpiration=%s; length=%lld\n"
740 "\n", date + 5, part->length);
744 /* Copy the original mime headers */
745 if (mutt_copy_bytes (fpin, fpout, part->offset - ftello (fpin)))
748 /* Skip the deleted body */
749 fseeko (fpin, part->offset + part->length, SEEK_SET);
752 if (copy_delete_attach (part, fpin, fpout, date))
758 /* Copy the last parts */
759 if (mutt_copy_bytes (fpin, fpout, b->offset + b->length - ftello (fpin)))
766 * This function is the equivalent of mutt_write_address_list(),
767 * but writes to a buffer instead of writing to a stream.
768 * mutt_write_address_list could be re-used if we wouldn't store
769 * all the decoded headers in a huge array, first.
774 static void format_address_header (char **h, address_t * a)
776 char buf[HUGE_STRING];
780 int l, linelen, buflen, count;
782 linelen = m_strlen(*h);
783 buflen = linelen + 3;
786 p_realloc(h, buflen);
787 for (count = 0; a; a = a->next, count++) {
788 address_t *tmp = a->next;
791 *buf = *cbuf = *c2buf = '\0';
792 rfc822_write_address (buf, sizeof (buf), a, 0);
796 if (count && linelen + l > 74) {
797 strcpy (cbuf, "\n\t"); /* __STRCPY_CHECKED__ */
802 strcpy (cbuf, " "); /* __STRCPY_CHECKED__ */
807 if (!a->group && a->next && a->next->mailbox) {
810 strcpy (c2buf, ","); /* __STRCPY_CHECKED__ */
813 buflen += l + m_strlen(cbuf) + m_strlen(c2buf);
814 p_realloc(h, buflen);
815 strcat (*h, cbuf); /* __STRCAT_CHECKED__ */
816 strcat (*h, buf); /* __STRCAT_CHECKED__ */
817 strcat (*h, c2buf); /* __STRCAT_CHECKED__ */
820 /* Space for this was allocated in the beginning of this function. */
821 strcat (*h, "\n"); /* __STRCAT_CHECKED__ */
824 static int address_header_decode (char **h)
831 switch (tolower ((unsigned char) *s)) {
834 if (ascii_strncasecmp (s, "return-path:", 12) == 0) {
838 else if (ascii_strncasecmp (s, "reply-to:", 9) == 0) {
846 if (ascii_strncasecmp (s, "from:", 5))
853 if (ascii_strncasecmp (s, "cc:", 3))
861 if (ascii_strncasecmp (s, "bcc:", 4))
868 if (ascii_strncasecmp (s, "sender:", 7))
875 if (ascii_strncasecmp (s, "to:", 3))
882 if (ascii_strncasecmp (s, "mail-followup-to:", 17))
891 if ((a = rfc822_parse_adrlist (a, s + l)) == NULL)
894 mutt_addrlist_to_local (a);
895 rfc2047_decode_adrlist (a);
897 *h = p_dupstr(s, l + 1);
899 format_address_header (h, a);
901 address_list_wipe(&a);