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.
14 #include <lib-lib/mem.h>
15 #include <lib-lib/str.h>
16 #include <lib-lib/ascii.h>
24 #include "mutt_crypt.h"
25 #include "mutt_idna.h"
27 #include "lib/debug.h"
32 #include <unistd.h> /* needed for SEEK_SET under SunOS 4.1.4 */
34 static int address_header_decode (char **str);
35 static int copy_delete_attach (BODY * b, FILE * fpin, FILE * fpout,
38 /* Ok, the only reason for not merging this with mutt_copy_header()
39 * below is to avoid creating a HEADER structure in message_handler().
42 mutt_copy_hdr (FILE* in, FILE* out, off_t off_start, off_t off_end,
43 int flags, const char *prefix) {
47 char buf[STRING]; /* should be long enough to get most fields in one pass */
53 char *this_one = NULL;
57 if (ftello (in) != off_start)
58 fseeko (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 (ftello (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 = p_new(char *, hdr_count);
132 /* Read all the headers into the array */
133 while (ftello (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 p_realloc(&headers[x], m_strlen(headers[x]) + m_strlen(this_one) + 1);
159 strcat(headers[x], this_one); /* __STRCAT_CHECKED__ */
168 if (!from && str_ncmp ("From ", buf, 5) == 0) {
169 if ((flags & CH_FROM) == 0)
171 this_is_from = from = 1;
173 else if (buf[0] == '\n' || (buf[0] == '\r' && buf[1] == '\n'))
174 break; /* end of header */
176 /* note: CH_FROM takes precedence over header weeding. */
177 if (!((flags & CH_FROM) && (flags & CH_FORCE_FROM) && this_is_from) &&
179 mutt_matches_ignore (buf, Ignore) &&
180 !mutt_matches_ignore (buf, UnIgnore))
182 if ((flags & CH_WEED_DELIVERED) &&
183 ascii_strncasecmp ("Delivered-To:", buf, 13) == 0)
185 if ((flags & (CH_UPDATE | CH_XMIT | CH_NOSTATUS)) &&
186 (ascii_strncasecmp ("Status:", buf, 7) == 0 ||
187 ascii_strncasecmp ("X-Status:", buf, 9) == 0))
189 if ((flags & (CH_UPDATE_LEN | CH_XMIT | CH_NOLEN)) &&
190 (ascii_strncasecmp ("Content-Length:", buf, 15) == 0 ||
191 ascii_strncasecmp ("Lines:", buf, 6) == 0))
193 if ((flags & CH_MIME) &&
194 ((ascii_strncasecmp ("content-", buf, 8) == 0 &&
195 (ascii_strncasecmp ("transfer-encoding:", buf + 8, 18) == 0 ||
196 ascii_strncasecmp ("type:", buf + 8, 5) == 0)) ||
197 ascii_strncasecmp ("mime-version:", buf, 13) == 0))
199 if ((flags & CH_UPDATE_REFS) &&
200 ascii_strncasecmp ("References:", buf, 11) == 0)
202 if ((flags & CH_UPDATE_IRT) &&
203 ascii_strncasecmp ("In-Reply-To:", buf, 12) == 0)
206 /* Find x -- the array entry where this header is to be saved */
207 if (flags & CH_REORDER) {
208 for (t = HeaderOrderList, x = 0; (t); t = t->next, x++) {
209 if (!ascii_strncasecmp (buf, t->data, m_strlen(t->data))) {
210 debug_print (2, ("Reorder: %s matches %s\n", t->data, buf));
217 } /* If beginning of header */
220 debug_print (2, ("Reorder: x = %d; hdr_count = %d\n", x, hdr_count));
222 this_one = m_strdup(buf);
223 /* we do want to see all lines if this header doesn't feature
224 * abbreviations (curline is 0), $max_display_recips is 0 and
225 * while the number hasn't reached $max_display_recips yet */
226 else if (curline == 0 || MaxDispRecips == 0 || ++curline <= MaxDispRecips) {
227 p_realloc(&this_one, m_strlen(this_one) + m_strlen(buf) + 1);
228 strcat (this_one, buf); /* __STRCAT_CHECKED__ */
229 /* only for the first line which doesn't exeeds
230 * $max_display_recips: abbreviate it */
231 } else if (curline == MaxDispRecips+1) {
232 p_realloc(&this_one, m_strlen(this_one) + 5);
233 strcat (this_one, " ...");
236 } /* while (ftello (in) < off_end) */
238 /* Do we have anything pending? -- XXX, same code as in above in the loop. */
240 if (flags & CH_DECODE) {
241 if (!address_header_decode (&this_one))
242 rfc2047_decode (&this_one);
246 headers[x] = this_one;
248 p_realloc(&headers[x], m_strlen(headers[x]) + m_strlen(this_one) + 1);
249 strcat (headers[x], this_one); /* __STRCAT_CHECKED__ */
256 /* Now output the headers in order */
257 for (x = 0; x < hdr_count; x++) {
260 if (flags & CH_DECODE)
261 rfc2047_decode (&headers[x]);
264 /* We couldn't do the prefixing when reading because RFC 2047
265 * decoding may have concatenated lines.
267 if (flags & CH_PREFIX) {
268 char *ch = headers[x];
269 int print_prefix = 1;
273 if (fputs (prefix, out) == EOF) {
280 if (*ch == '\n' && ch[1])
283 if (putc (*ch++, out) == EOF) {
292 if (fputs (headers[x], out) == EOF) {
300 /* Free in a separate loop to be sure that all headers are freed
301 * in case of error. */
302 for (x = 0; x < hdr_count; x++)
303 p_delete(&headers[x]);
312 CH_DECODE RFC2047 header decoding
313 CH_FROM retain the "From " message separator
314 CH_FORCE_FROM give CH_FROM precedence over CH_WEED
315 CH_MIME ignore MIME fields
316 CH_NOLEN don't write Content-Length: and Lines:
317 CH_NONEWLINE don't output a newline after the header
318 CH_NOSTATUS ignore the Status: and X-Status:
319 CH_PREFIX quote header with $indent_str
320 CH_REORDER output header in order specified by `hdr_order'
321 CH_TXTPLAIN generate text/plain MIME headers [hack alert.]
322 CH_UPDATE write new Status: and X-Status:
323 CH_UPDATE_LEN write new Content-Length: and Lines:
324 CH_XMIT ignore Lines: and Content-Length:
325 CH_WEED do header weeding
326 CH_NOQFROM ignore ">From " line
327 CH_UPDATE_IRT update the In-Reply-To: header
328 CH_UPDATE_REFS update the References: header
331 string to use if CH_PREFIX is set
335 mutt_copy_header (FILE * in, HEADER * h, FILE * out, int flags,
338 char buffer[SHORT_STRING];
341 flags |= (h->env->irt_changed ? CH_UPDATE_IRT : 0) |
342 (h->env->refs_changed ? CH_UPDATE_REFS : 0);
344 if (mutt_copy_hdr (in, out, h->offset, h->content->offset, flags, prefix) ==
348 if (flags & CH_TXTPLAIN) {
349 char chsbuf[SHORT_STRING];
351 fputs ("MIME-Version: 1.0\n", out);
352 fputs ("Content-Transfer-Encoding: 8bit\n", out);
353 fputs ("Content-Type: text/plain; charset=", out);
354 mutt_canonical_charset (chsbuf, sizeof (chsbuf),
355 Charset ? Charset : "us-ascii");
356 rfc822_cat (buffer, sizeof (buffer), chsbuf, MimeSpecials);
360 if (ferror (out) != 0 || feof (out) != 0)
365 if (flags & CH_UPDATE) {
366 if ((flags & CH_NOSTATUS) == 0) {
367 if (h->env->irt_changed && h->env->in_reply_to) {
368 LIST *listp = h->env->in_reply_to;
370 if (fputs ("In-Reply-To: ", out) == EOF)
373 for (; listp; listp = listp->next)
374 if ((fputs (listp->data, out) == EOF) || (fputc (' ', out) == EOF))
377 if (fputc ('\n', out) == EOF)
381 if (h->env->refs_changed && h->env->references) {
382 LIST *listp = h->env->references, *refs = NULL, *t;
384 if (fputs ("References: ", out) == EOF)
387 /* Mutt stores references in reverse order, thus we create
388 * a reordered refs list that we can put in the headers */
389 for (; listp; listp = listp->next, refs = t) {
391 t->data = listp->data;
395 for (; refs; refs = refs->next)
396 if ((fputs (refs->data, out) == EOF) || (fputc (' ', out) == EOF))
399 /* clearing refs from memory */
400 for (t = refs; refs; refs = t->next, t = refs)
403 if (fputc ('\n', out) == EOF)
407 if (h->old || h->read) {
408 if (fputs ("Status: ", out) == EOF)
412 if (fputs ("RO", out) == EOF)
416 if (fputc ('O', out) == EOF)
420 if (fputc ('\n', out) == EOF)
424 if (h->flagged || h->replied) {
425 if (fputs ("X-Status: ", out) == EOF)
429 if (fputc ('A', out) == EOF)
434 if (fputc ('F', out) == EOF)
438 if (fputc ('\n', out) == EOF)
444 if (flags & CH_UPDATE_LEN && (flags & CH_NOLEN) == 0) {
445 fprintf (out, "Content-Length: %zd\n", h->content->length);
446 if (h->lines != 0 || h->content->length == 0)
447 fprintf (out, "Lines: %d\n", h->lines);
450 if ((flags & CH_NONEWLINE) == 0) {
451 if (flags & CH_PREFIX)
453 if (fputc ('\n', out) == EOF) /* add header terminator */
457 if (ferror (out) || feof (out))
463 /* Count the number of lines and bytes to be deleted in this body*/
464 static int count_delete_lines (FILE * fp, BODY * b, off_t *length,
472 fseeko (fp, b->offset, SEEK_SET);
473 for (l = b->length; l; l--) {
481 *length -= b->length - (84 + datelen);
482 /* Count the number of digits exceeding the first one to write the size */
483 for (l = 10; b->length >= l; l *= 10)
487 for (b = b->parts; b; b = b->next)
488 dellines += count_delete_lines (fp, b, length, datelen);
493 /* make a copy of a message
495 * fpout where to write output
496 * fpin where to get input
497 * hdr header of message being copied
498 * body structure of message being copied
500 * M_CM_NOHEADER don't copy header
501 * M_CM_PREFIX quote header and body
502 * M_CM_DECODE decode message body to text/plain
503 * M_CM_DISPLAY displaying output to the user
504 * M_CM_PRINTING printing the message
505 * M_CM_UPDATE update structures in memory after syncing
506 * M_CM_DECODE_PGP used for decoding PGP messages
507 * M_CM_CHARCONV perform character set conversion
508 * chflags flags to mutt_copy_header()
512 _mutt_copy_message (FILE * fpout, FILE * fpin, HEADER * hdr, BODY * body,
513 int flags, int chflags)
515 char prefix[SHORT_STRING];
517 off_t new_offset = -1;
520 if (flags & M_CM_PREFIX) {
521 if (option (OPTTEXTFLOWED))
522 strfcpy (prefix, ">", sizeof (prefix));
524 _mutt_make_string (prefix, sizeof (prefix), NONULL (Prefix), Context,
528 if ((flags & M_CM_NOHEADER) == 0) {
529 if (flags & M_CM_PREFIX)
530 chflags |= CH_PREFIX;
532 else if (hdr->attach_del && (chflags & CH_UPDATE_LEN)) {
534 off_t new_length = body->length;
535 char date[SHORT_STRING];
537 mutt_make_date (date, sizeof (date));
538 date[5] = date[m_strlen(date) - 1] = '\"';
540 /* Count the number of lines and bytes to be deleted */
541 fseeko (fpin, body->offset, SEEK_SET);
542 new_lines = hdr->lines -
543 count_delete_lines (fpin, body, &new_length, m_strlen(date));
545 /* Copy the headers */
546 if (mutt_copy_header (fpin, hdr, fpout,
547 chflags | CH_NOLEN | CH_NONEWLINE, NULL))
549 fprintf (fpout, "Content-Length: %zd\n", new_length);
553 fprintf (fpout, "Lines: %d\n\n", new_lines);
554 if (ferror (fpout) || feof (fpout))
556 new_offset = ftello (fpout);
559 fseeko (fpin, body->offset, SEEK_SET);
560 if (copy_delete_attach (body, fpin, fpout, date))
565 off_t fail = ((ftello (fpout) - new_offset) - new_length);
568 mutt_error ("The length calculation was wrong by %ld bytes", fail);
575 /* Update original message if we are sync'ing a mailfolder */
576 if (flags & M_CM_UPDATE) {
578 hdr->lines = new_lines;
579 body->offset = new_offset;
581 /* update the total size of the mailbox to reflect this deletion */
582 Context->size -= body->length - new_length;
584 * if the message is visible, update the visible size of the mailbox
587 if (Context->v2r[hdr->msgno] != -1)
588 Context->vsize -= body->length - new_length;
590 body->length = new_length;
591 mutt_free_body (&body->parts);
597 if (mutt_copy_header (fpin, hdr, fpout, chflags,
598 (chflags & CH_PREFIX) ? prefix : NULL) == -1)
601 new_offset = ftello (fpout);
604 if (flags & M_CM_DECODE) {
605 /* now make a text/plain version of the message */
606 memset (&s, 0, sizeof (STATE));
609 if (flags & M_CM_PREFIX)
611 if (flags & M_CM_DISPLAY)
612 s.flags |= M_DISPLAY;
613 if (flags & M_CM_PRINTING)
614 s.flags |= M_PRINTING;
615 if (flags & M_CM_WEED)
617 if (flags & M_CM_CHARCONV)
618 s.flags |= M_CHARCONV;
619 if (flags & M_CM_REPLYING)
620 s.flags |= M_REPLYING;
622 if (WithCrypto && flags & M_CM_VERIFY)
625 rc = mutt_body_handler (body, &s);
628 && (flags & M_CM_DECODE_CRYPT) && (hdr->security & ENCRYPT)) {
632 if ((WithCrypto & APPLICATION_PGP)
633 && (flags & M_CM_DECODE_PGP) && (hdr->security & APPLICATION_PGP) &&
634 hdr->content->type == TYPEMULTIPART) {
635 if (crypt_pgp_decrypt_mime (fpin, &fp, hdr->content, &cur))
637 fputs ("MIME-Version: 1.0\n", fpout);
640 if ((WithCrypto & APPLICATION_SMIME)
641 && (flags & M_CM_DECODE_SMIME) && (hdr->security & APPLICATION_SMIME)
642 && hdr->content->type == TYPEAPPLICATION) {
643 if (crypt_smime_decrypt_mime (fpin, &fp, hdr->content, &cur))
647 mutt_write_mime_header (cur, fpout);
650 fseeko (fp, cur->offset, 0);
651 if (mutt_copy_bytes (fp, fpout, cur->length) == -1) {
653 mutt_free_body (&cur);
656 mutt_free_body (&cur);
660 fseeko (fpin, body->offset, 0);
661 if (flags & M_CM_PREFIX) {
663 size_t bytes = body->length;
665 fputs (prefix, fpout);
667 while ((c = fgetc (fpin)) != EOF && bytes--) {
670 fputs (prefix, fpout);
674 else if (mutt_copy_bytes (fpin, fpout, body->length) == -1)
678 if ((flags & M_CM_UPDATE) && (flags & M_CM_NOHEADER) == 0
679 && new_offset != -1) {
680 body->offset = new_offset;
681 mutt_free_body (&body->parts);
688 mutt_copy_message (FILE * fpout, CONTEXT * src, HEADER * hdr, int flags,
694 if ((msg = mx_open_message (src, hdr->msgno)) == NULL)
697 _mutt_copy_message (fpout, msg->fp, hdr, hdr->content, flags,
698 chflags)) == 0 && (ferror (fpout)
700 debug_print (1, ("_mutt_copy_message failed to detect EOF!\n"));
703 mx_close_message (&msg);
707 /* appends a copy of the given message to a mailbox
709 * dest destination mailbox
710 * fpin where to get input
712 * hdr message being copied
713 * body structure of message being copied
714 * flags mutt_copy_message() flags
715 * chflags mutt_copy_header() flags
719 _mutt_append_message (CONTEXT * dest, FILE * fpin, CONTEXT * src,
720 HEADER * hdr, BODY * body, int flags, int chflags) {
725 fseeko(fpin, hdr->offset, 0);
726 if (fgets (buf, sizeof (buf), fpin) == NULL)
728 if ((msg = mx_open_new_message (dest, hdr, is_from (buf, NULL, 0, NULL) ? 0 : M_ADD_FROM)) == NULL)
730 if (dest->magic == M_MBOX || dest->magic == M_MMDF)
731 chflags |= CH_FROM | CH_FORCE_FROM;
732 chflags |= (dest->magic == M_MAILDIR ? CH_NOSTATUS : CH_UPDATE);
733 r = _mutt_copy_message (msg->fp, fpin, hdr, body, flags, chflags);
734 if (mx_commit_message (msg, dest) != 0)
737 mx_close_message (&msg);
742 mutt_append_message (CONTEXT * dest, CONTEXT * src, HEADER * hdr, int cmflags,
748 if ((msg = mx_open_message (src, hdr->msgno)) == NULL)
751 _mutt_append_message (dest, msg->fp, src, hdr, hdr->content, cmflags,
753 mx_close_message (&msg);
758 * This function copies a message body, while deleting _in_the_copy_
759 * any attachments which are marked for deletion.
760 * Nothing is changed in the original message -- this is left to the caller.
762 * The function will return 0 on success and -1 on failure.
764 static int copy_delete_attach (BODY * b, FILE * fpin, FILE * fpout,
769 for (part = b->parts; part; part = part->next) {
770 if (part->deleted || part->parts) {
771 /* Copy till start of this part */
772 if (mutt_copy_bytes (fpin, fpout, part->hdr_offset - ftello (fpin)))
777 "Content-Type: message/external-body; access-type=x-mutt-deleted;\n"
778 "\texpiration=%s; length=%zd\n"
779 "\n", date + 5, part->length);
783 /* Copy the original mime headers */
784 if (mutt_copy_bytes (fpin, fpout, part->offset - ftello (fpin)))
787 /* Skip the deleted body */
788 fseeko (fpin, part->offset + part->length, SEEK_SET);
791 if (copy_delete_attach (part, fpin, fpout, date))
797 /* Copy the last parts */
798 if (mutt_copy_bytes (fpin, fpout, b->offset + b->length - ftello (fpin)))
805 * This function is the equivalent of mutt_write_address_list(),
806 * but writes to a buffer instead of writing to a stream.
807 * mutt_write_address_list could be re-used if we wouldn't store
808 * all the decoded headers in a huge array, first.
813 static void format_address_header (char **h, ADDRESS * a)
815 char buf[HUGE_STRING];
819 int l, linelen, buflen, count;
821 linelen = m_strlen(*h);
822 buflen = linelen + 3;
825 p_realloc(h, buflen);
826 for (count = 0; a; a = a->next, count++) {
827 ADDRESS *tmp = a->next;
830 *buf = *cbuf = *c2buf = '\0';
831 rfc822_write_address (buf, sizeof (buf), a, 0);
835 if (count && linelen + l > 74) {
836 strcpy (cbuf, "\n\t"); /* __STRCPY_CHECKED__ */
841 strcpy (cbuf, " "); /* __STRCPY_CHECKED__ */
846 if (!a->group && a->next && a->next->mailbox) {
849 strcpy (c2buf, ","); /* __STRCPY_CHECKED__ */
852 buflen += l + m_strlen(cbuf) + m_strlen(c2buf);
853 p_realloc(h, buflen);
854 strcat (*h, cbuf); /* __STRCAT_CHECKED__ */
855 strcat (*h, buf); /* __STRCAT_CHECKED__ */
856 strcat (*h, c2buf); /* __STRCAT_CHECKED__ */
859 /* Space for this was allocated in the beginning of this function. */
860 strcat (*h, "\n"); /* __STRCAT_CHECKED__ */
863 static int address_header_decode (char **h)
870 switch (tolower ((unsigned char) *s)) {
873 if (ascii_strncasecmp (s, "return-path:", 12) == 0) {
877 else if (ascii_strncasecmp (s, "reply-to:", 9) == 0) {
885 if (ascii_strncasecmp (s, "from:", 5))
892 if (ascii_strncasecmp (s, "cc:", 3))
900 if (ascii_strncasecmp (s, "bcc:", 4))
907 if (ascii_strncasecmp (s, "sender:", 7))
914 if (ascii_strncasecmp (s, "to:", 3))
921 if (ascii_strncasecmp (s, "mail-followup-to:", 17))
930 if ((a = rfc822_parse_adrlist (a, s + l)) == NULL)
933 mutt_addrlist_to_local (a);
934 rfc2047_decode_adrlist (a);
936 *h = p_dupstr(s, l + 1);
938 format_address_header (h, a);
940 rfc822_free_address (&a);