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 <lib-lib/macros.h>
20 #include <lib-lib/mem.h>
21 #include <lib-lib/str.h>
22 #include <lib-lib/file.h>
23 #include <lib-lib/ascii.h>
25 #include <lib-mime/mime.h>
31 #include <lib-crypt/crypt.h>
32 #include "mutt_idna.h"
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 && m_strncmp("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) {
127 headers = p_new(char *, hdr_count);
129 /* Read all the headers into the array */
130 while (ftello (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') {
140 /* set curline to 1 for To:/Cc:/Bcc: and 0 otherwise */
141 curline = (flags & CH_WEED) && (ascii_strncmp ("To:", buf, 3) == 0 ||
142 ascii_strncmp ("Cc:", buf, 3) == 0 ||
143 ascii_strncmp ("Bcc:", buf, 4) == 0);
145 /* Do we have anything pending? */
147 if (flags & CH_DECODE) {
148 if (!address_header_decode (&this_one))
149 rfc2047_decode (&this_one);
153 headers[x] = this_one;
155 p_realloc(&headers[x], m_strlen(headers[x]) + m_strlen(this_one) + 1);
156 strcat(headers[x], this_one); /* __STRCAT_CHECKED__ */
165 if (!from && m_strncmp("From ", buf, 5) == 0) {
166 if ((flags & CH_FROM) == 0)
168 this_is_from = from = 1;
170 else if (buf[0] == '\n' || (buf[0] == '\r' && buf[1] == '\n'))
171 break; /* end of header */
173 /* note: CH_FROM takes precedence over header weeding. */
174 if (!((flags & CH_FROM) && (flags & CH_FORCE_FROM) && this_is_from) &&
176 mutt_matches_ignore (buf, Ignore) &&
177 !mutt_matches_ignore (buf, UnIgnore))
179 if ((flags & CH_WEED_DELIVERED) &&
180 ascii_strncasecmp ("Delivered-To:", buf, 13) == 0)
182 if ((flags & (CH_UPDATE | CH_XMIT | CH_NOSTATUS)) &&
183 (ascii_strncasecmp ("Status:", buf, 7) == 0 ||
184 ascii_strncasecmp ("X-Status:", buf, 9) == 0))
186 if ((flags & (CH_UPDATE_LEN | CH_XMIT | CH_NOLEN)) &&
187 (ascii_strncasecmp ("Content-Length:", buf, 15) == 0 ||
188 ascii_strncasecmp ("Lines:", buf, 6) == 0))
190 if ((flags & CH_MIME) &&
191 ((ascii_strncasecmp ("content-", buf, 8) == 0 &&
192 (ascii_strncasecmp ("transfer-encoding:", buf + 8, 18) == 0 ||
193 ascii_strncasecmp ("type:", buf + 8, 5) == 0)) ||
194 ascii_strncasecmp ("mime-version:", buf, 13) == 0))
196 if ((flags & CH_UPDATE_REFS) &&
197 ascii_strncasecmp ("References:", buf, 11) == 0)
199 if ((flags & CH_UPDATE_IRT) &&
200 ascii_strncasecmp ("In-Reply-To:", buf, 12) == 0)
203 /* Find x -- the array entry where this header is to be saved */
204 if (flags & CH_REORDER) {
205 for (t = HeaderOrderList, x = 0; (t); t = t->next, x++) {
206 if (!ascii_strncasecmp (buf, t->data, m_strlen(t->data))) {
213 } /* If beginning of header */
217 this_one = m_strdup(buf);
218 /* we do want to see all lines if this header doesn't feature
219 * abbreviations (curline is 0), $max_display_recips is 0 and
220 * while the number hasn't reached $max_display_recips yet */
221 else if (curline == 0 || MaxDispRecips == 0 || ++curline <= MaxDispRecips) {
222 p_realloc(&this_one, m_strlen(this_one) + m_strlen(buf) + 1);
223 strcat (this_one, buf); /* __STRCAT_CHECKED__ */
224 /* only for the first line which doesn't exeeds
225 * $max_display_recips: abbreviate it */
226 } else if (curline == MaxDispRecips+1) {
227 p_realloc(&this_one, m_strlen(this_one) + 5);
228 strcat (this_one, " ...");
231 } /* while (ftello (in) < off_end) */
233 /* Do we have anything pending? -- XXX, same code as in above in the loop. */
235 if (flags & CH_DECODE) {
236 if (!address_header_decode (&this_one))
237 rfc2047_decode (&this_one);
241 headers[x] = this_one;
243 p_realloc(&headers[x], m_strlen(headers[x]) + m_strlen(this_one) + 1);
244 strcat (headers[x], this_one); /* __STRCAT_CHECKED__ */
251 /* Now output the headers in order */
252 for (x = 0; x < hdr_count; x++) {
255 if (flags & CH_DECODE)
256 rfc2047_decode (&headers[x]);
259 /* We couldn't do the prefixing when reading because RFC 2047
260 * decoding may have concatenated lines.
262 if (flags & CH_PREFIX) {
263 char *ch = headers[x];
264 int print_prefix = 1;
268 if (fputs (prefix, out) == EOF) {
275 if (*ch == '\n' && ch[1])
278 if (putc (*ch++, out) == EOF) {
287 if (fputs (headers[x], out) == EOF) {
295 /* Free in a separate loop to be sure that all headers are freed
296 * in case of error. */
297 for (x = 0; x < hdr_count; x++)
298 p_delete(&headers[x]);
307 CH_DECODE RFC2047 header decoding
308 CH_FROM retain the "From " message separator
309 CH_FORCE_FROM give CH_FROM precedence over CH_WEED
310 CH_MIME ignore MIME fields
311 CH_NOLEN don't write Content-Length: and Lines:
312 CH_NONEWLINE don't output a newline after the header
313 CH_NOSTATUS ignore the Status: and X-Status:
314 CH_PREFIX quote header with $indent_str
315 CH_REORDER output header in order specified by `hdr_order'
316 CH_TXTPLAIN generate text/plain MIME headers [hack alert.]
317 CH_UPDATE write new Status: and X-Status:
318 CH_UPDATE_LEN write new Content-Length: and Lines:
319 CH_XMIT ignore Lines: and Content-Length:
320 CH_WEED do header weeding
321 CH_NOQFROM ignore ">From " line
322 CH_UPDATE_IRT update the In-Reply-To: header
323 CH_UPDATE_REFS update the References: header
326 string to use if CH_PREFIX is set
330 mutt_copy_header (FILE * in, HEADER * h, FILE * out, int flags,
333 char buffer[SHORT_STRING];
336 flags |= (h->env->irt_changed ? CH_UPDATE_IRT : 0) |
337 (h->env->refs_changed ? CH_UPDATE_REFS : 0);
339 if (mutt_copy_hdr (in, out, h->offset, h->content->offset, flags, prefix) ==
343 if (flags & CH_TXTPLAIN) {
344 char chsbuf[SHORT_STRING];
346 fputs ("MIME-Version: 1.0\n", out);
347 fputs ("Content-Transfer-Encoding: 8bit\n", out);
348 fputs ("Content-Type: text/plain; charset=", out);
349 charset_canonicalize (chsbuf, sizeof (chsbuf),
350 Charset ? Charset : "us-ascii");
351 rfc822_strcpy(buffer, sizeof(buffer), chsbuf, MimeSpecials);
355 if (ferror (out) != 0 || feof (out) != 0)
360 if (flags & CH_UPDATE) {
361 if ((flags & CH_NOSTATUS) == 0) {
362 if (h->env->irt_changed && h->env->in_reply_to) {
363 string_list_t *listp = h->env->in_reply_to;
365 if (fputs ("In-Reply-To: ", out) == EOF)
368 for (; listp; listp = listp->next)
369 if ((fputs (listp->data, out) == EOF) || (fputc (' ', out) == EOF))
372 if (fputc ('\n', out) == EOF)
376 if (h->env->refs_changed && h->env->references) {
377 string_list_t *listp = h->env->references, *refs = NULL, *t;
379 if (fputs ("References: ", out) == EOF)
382 /* Mutt stores references in reverse order, thus we create
383 * a reordered refs list that we can put in the headers */
384 for (; listp; listp = listp->next, refs = t) {
385 t = p_new(string_list_t, 1);
386 t->data = listp->data;
390 for (; refs; refs = refs->next)
391 if ((fputs (refs->data, out) == EOF) || (fputc (' ', out) == EOF))
394 /* clearing refs from memory */
395 for (t = refs; refs; refs = t->next, t = refs)
398 if (fputc ('\n', out) == EOF)
402 if (h->old || h->read) {
403 if (fputs ("Status: ", out) == EOF)
407 if (fputs ("RO", out) == EOF)
411 if (fputc ('O', out) == EOF)
415 if (fputc ('\n', out) == EOF)
419 if (h->flagged || h->replied) {
420 if (fputs ("X-Status: ", out) == EOF)
424 if (fputc ('A', out) == EOF)
429 if (fputc ('F', out) == EOF)
433 if (fputc ('\n', out) == EOF)
439 if (flags & CH_UPDATE_LEN && (flags & CH_NOLEN) == 0) {
440 fprintf (out, "Content-Length: %lld\n", h->content->length);
441 if (h->lines != 0 || h->content->length == 0)
442 fprintf (out, "Lines: %d\n", h->lines);
445 if ((flags & CH_NONEWLINE) == 0) {
446 if (flags & CH_PREFIX)
448 if (fputc ('\n', out) == EOF) /* add header terminator */
452 if (ferror (out) || feof (out))
458 /* Count the number of lines and bytes to be deleted in this body*/
459 static int count_delete_lines (FILE * fp, BODY * b, off_t *length,
467 fseeko (fp, b->offset, SEEK_SET);
468 for (l = b->length; l; l--) {
476 *length -= b->length - (84 + datelen);
477 /* Count the number of digits exceeding the first one to write the size */
478 for (l = 10; b->length >= l; l *= 10)
482 for (b = b->parts; b; b = b->next)
483 dellines += count_delete_lines (fp, b, length, datelen);
488 /* make a copy of a message
490 * fpout where to write output
491 * fpin where to get input
492 * hdr header of message being copied
493 * body structure of message being copied
495 * M_CM_NOHEADER don't copy header
496 * M_CM_PREFIX quote header and body
497 * M_CM_DECODE decode message body to text/plain
498 * M_CM_DISPLAY displaying output to the user
499 * M_CM_PRINTING printing the message
500 * M_CM_UPDATE update structures in memory after syncing
501 * M_CM_DECODE_PGP used for decoding PGP messages
502 * M_CM_CHARCONV perform character set conversion
503 * chflags flags to mutt_copy_header()
507 _mutt_copy_message (FILE * fpout, FILE * fpin, HEADER * hdr, BODY * body,
508 int flags, int chflags)
510 char prefix[SHORT_STRING];
512 off_t new_offset = -1;
515 if (flags & M_CM_PREFIX) {
516 if (option (OPTTEXTFLOWED))
517 m_strcpy(prefix, sizeof(prefix), ">");
519 _mutt_make_string (prefix, sizeof (prefix), NONULL (Prefix), Context,
523 if ((flags & M_CM_NOHEADER) == 0) {
524 if (flags & M_CM_PREFIX)
525 chflags |= CH_PREFIX;
527 else if (hdr->attach_del && (chflags & CH_UPDATE_LEN)) {
529 off_t new_length = body->length;
530 char date[SHORT_STRING];
532 mutt_make_date (date, sizeof (date));
533 date[5] = date[m_strlen(date) - 1] = '\"';
535 /* Count the number of lines and bytes to be deleted */
536 fseeko (fpin, body->offset, SEEK_SET);
537 new_lines = hdr->lines -
538 count_delete_lines (fpin, body, &new_length, m_strlen(date));
540 /* Copy the headers */
541 if (mutt_copy_header (fpin, hdr, fpout,
542 chflags | CH_NOLEN | CH_NONEWLINE, NULL))
544 fprintf (fpout, "Content-Length: %lld\n", new_length);
548 fprintf (fpout, "Lines: %d\n\n", new_lines);
549 if (ferror (fpout) || feof (fpout))
551 new_offset = ftello (fpout);
554 fseeko (fpin, body->offset, SEEK_SET);
555 if (copy_delete_attach (body, fpin, fpout, date))
558 /* Update original message if we are sync'ing a mailfolder */
559 if (flags & M_CM_UPDATE) {
561 hdr->lines = new_lines;
562 body->offset = new_offset;
564 /* update the total size of the mailbox to reflect this deletion */
565 Context->size -= body->length - new_length;
567 * if the message is visible, update the visible size of the mailbox
570 if (Context->v2r[hdr->msgno] != -1)
571 Context->vsize -= body->length - new_length;
573 body->length = new_length;
574 mutt_free_body (&body->parts);
580 if (mutt_copy_header (fpin, hdr, fpout, chflags,
581 (chflags & CH_PREFIX) ? prefix : NULL) == -1)
584 new_offset = ftello (fpout);
587 if (flags & M_CM_DECODE) {
588 /* now make a text/plain version of the message */
592 if (flags & M_CM_PREFIX)
594 if (flags & M_CM_DISPLAY)
595 s.flags |= M_DISPLAY;
596 if (flags & M_CM_PRINTING)
597 s.flags |= M_PRINTING;
598 if (flags & M_CM_WEED)
600 if (flags & M_CM_CHARCONV)
601 s.flags |= M_CHARCONV;
602 if (flags & M_CM_REPLYING)
603 s.flags |= M_REPLYING;
605 if (flags & M_CM_VERIFY)
608 rc = mutt_body_handler (body, &s);
610 else if ((flags & M_CM_DECODE_CRYPT) && (hdr->security & ENCRYPT)) {
614 if ((flags & M_CM_DECODE_PGP) && (hdr->security & APPLICATION_PGP) &&
615 hdr->content->type == TYPEMULTIPART) {
616 if (crypt_pgp_decrypt_mime (fpin, &fp, hdr->content, &cur))
618 fputs ("MIME-Version: 1.0\n", fpout);
621 if ((flags & M_CM_DECODE_SMIME) && (hdr->security & APPLICATION_SMIME)
622 && hdr->content->type == TYPEAPPLICATION) {
623 if (crypt_smime_decrypt_mime (fpin, &fp, hdr->content, &cur))
627 mutt_write_mime_header (cur, fpout);
630 fseeko (fp, cur->offset, 0);
631 if (mutt_copy_bytes (fp, fpout, cur->length) == -1) {
633 mutt_free_body (&cur);
636 mutt_free_body (&cur);
640 fseeko (fpin, body->offset, 0);
641 if (flags & M_CM_PREFIX) {
643 size_t bytes = body->length;
645 fputs (prefix, fpout);
647 while ((c = fgetc (fpin)) != EOF && bytes--) {
650 fputs (prefix, fpout);
654 else if (mutt_copy_bytes (fpin, fpout, body->length) == -1)
658 if ((flags & M_CM_UPDATE) && (flags & M_CM_NOHEADER) == 0
659 && new_offset != -1) {
660 body->offset = new_offset;
661 mutt_free_body (&body->parts);
668 mutt_copy_message (FILE * fpout, CONTEXT * src, HEADER * hdr, int flags,
674 if ((msg = mx_open_message (src, hdr->msgno)) == NULL)
677 _mutt_copy_message (fpout, msg->fp, hdr, hdr->content, flags,
678 chflags)) == 0 && (ferror (fpout)
682 mx_close_message (&msg);
686 /* appends a copy of the given message to a mailbox
688 * dest destination mailbox
689 * fpin where to get input
691 * hdr message being copied
692 * body structure of message being copied
693 * flags mutt_copy_message() flags
694 * chflags mutt_copy_header() flags
698 _mutt_append_message (CONTEXT * dest, FILE * fpin, CONTEXT * src __attribute__ ((unused)),
699 HEADER * hdr, BODY * body, int flags, int chflags) {
704 fseeko(fpin, hdr->offset, 0);
705 if (fgets (buf, sizeof (buf), fpin) == NULL)
707 if ((msg = mx_open_new_message (dest, hdr, is_from (buf, NULL, 0, NULL) ? 0 : M_ADD_FROM)) == NULL)
709 if (dest->magic == M_MBOX || dest->magic == M_MMDF)
710 chflags |= CH_FROM | CH_FORCE_FROM;
711 chflags |= (dest->magic == M_MAILDIR ? CH_NOSTATUS : CH_UPDATE);
712 r = _mutt_copy_message (msg->fp, fpin, hdr, body, flags, chflags);
713 if (mx_commit_message (msg, dest) != 0)
716 mx_close_message (&msg);
721 mutt_append_message (CONTEXT * dest, CONTEXT * src, HEADER * hdr, int cmflags,
727 if ((msg = mx_open_message (src, hdr->msgno)) == NULL)
730 _mutt_append_message (dest, msg->fp, src, hdr, hdr->content, cmflags,
732 mx_close_message (&msg);
737 * This function copies a message body, while deleting _in_the_copy_
738 * any attachments which are marked for deletion.
739 * Nothing is changed in the original message -- this is left to the caller.
741 * The function will return 0 on success and -1 on failure.
743 static int copy_delete_attach (BODY * b, FILE * fpin, FILE * fpout,
748 for (part = b->parts; part; part = part->next) {
749 if (part->deleted || part->parts) {
750 /* Copy till start of this part */
751 if (mutt_copy_bytes (fpin, fpout, part->hdr_offset - ftello (fpin)))
756 "Content-Type: message/external-body; access-type=x-mutt-deleted;\n"
757 "\texpiration=%s; length=%lld\n"
758 "\n", date + 5, part->length);
762 /* Copy the original mime headers */
763 if (mutt_copy_bytes (fpin, fpout, part->offset - ftello (fpin)))
766 /* Skip the deleted body */
767 fseeko (fpin, part->offset + part->length, SEEK_SET);
770 if (copy_delete_attach (part, fpin, fpout, date))
776 /* Copy the last parts */
777 if (mutt_copy_bytes (fpin, fpout, b->offset + b->length - ftello (fpin)))
784 * This function is the equivalent of mutt_write_address_list(),
785 * but writes to a buffer instead of writing to a stream.
786 * mutt_write_address_list could be re-used if we wouldn't store
787 * all the decoded headers in a huge array, first.
792 static void format_address_header (char **h, address_t * a)
794 char buf[HUGE_STRING];
798 int l, linelen, buflen, count;
800 linelen = m_strlen(*h);
801 buflen = linelen + 3;
804 p_realloc(h, buflen);
805 for (count = 0; a; a = a->next, count++) {
806 address_t *tmp = a->next;
809 *buf = *cbuf = *c2buf = '\0';
810 rfc822_write_address (buf, sizeof (buf), a, 0);
814 if (count && linelen + l > 74) {
815 strcpy (cbuf, "\n\t"); /* __STRCPY_CHECKED__ */
820 strcpy (cbuf, " "); /* __STRCPY_CHECKED__ */
825 if (!a->group && a->next && a->next->mailbox) {
828 strcpy (c2buf, ","); /* __STRCPY_CHECKED__ */
831 buflen += l + m_strlen(cbuf) + m_strlen(c2buf);
832 p_realloc(h, buflen);
833 strcat (*h, cbuf); /* __STRCAT_CHECKED__ */
834 strcat (*h, buf); /* __STRCAT_CHECKED__ */
835 strcat (*h, c2buf); /* __STRCAT_CHECKED__ */
838 /* Space for this was allocated in the beginning of this function. */
839 strcat (*h, "\n"); /* __STRCAT_CHECKED__ */
842 static int address_header_decode (char **h)
849 switch (tolower ((unsigned char) *s)) {
852 if (ascii_strncasecmp (s, "return-path:", 12) == 0) {
856 else if (ascii_strncasecmp (s, "reply-to:", 9) == 0) {
864 if (ascii_strncasecmp (s, "from:", 5))
871 if (ascii_strncasecmp (s, "cc:", 3))
879 if (ascii_strncasecmp (s, "bcc:", 4))
886 if (ascii_strncasecmp (s, "sender:", 7))
893 if (ascii_strncasecmp (s, "to:", 3))
900 if (ascii_strncasecmp (s, "mail-followup-to:", 17))
909 if ((a = rfc822_parse_adrlist (a, s + l)) == NULL)
912 mutt_addrlist_to_local (a);
913 rfc2047_decode_adrlist (a);
915 *h = p_dupstr(s, l + 1);
917 format_address_header (h, a);
919 address_list_wipe(&a);