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>
24 #include <lib-lib/debug.h>
26 #include <lib-mime/mime.h>
32 #include <lib-crypt/crypt.h>
33 #include "mutt_idna.h"
35 static int address_header_decode (char **str);
36 static int copy_delete_attach (BODY * b, FILE * fpin, FILE * fpout,
39 /* Ok, the only reason for not merging this with mutt_copy_header()
40 * below is to avoid creating a HEADER structure in message_handler().
43 mutt_copy_hdr (FILE* in, FILE* out, off_t off_start, off_t off_end,
44 int flags, const char *prefix) {
48 char buf[STRING]; /* should be long enough to get most fields in one pass */
54 char *this_one = NULL;
58 if (ftello (in) != off_start)
59 fseeko (in, off_start, 0);
65 (CH_REORDER | CH_WEED | CH_MIME | CH_DECODE | CH_PREFIX |
66 CH_WEED_DELIVERED)) == 0) {
67 /* Without these flags to complicate things
68 * we can do a more efficient line to line copying
70 while (ftello (in) < off_end) {
71 nl = strchr (buf, '\n');
73 if ((fgets (buf, sizeof (buf), in)) == NULL)
76 /* Is it the begining of a header? */
77 if (nl && buf[0] != ' ' && buf[0] != '\t') {
79 if (!from && m_strncmp("From ", buf, 5) == 0) {
80 if ((flags & CH_FROM) == 0)
84 else if (flags & (CH_NOQFROM) &&
85 ascii_strncasecmp (">From ", buf, 6) == 0)
88 else if (buf[0] == '\n' || (buf[0] == '\r' && buf[1] == '\n'))
89 break; /* end of header */
91 if ((flags & (CH_UPDATE | CH_XMIT | CH_NOSTATUS)) &&
92 (ascii_strncasecmp ("Status:", buf, 7) == 0 ||
93 ascii_strncasecmp ("X-Status:", buf, 9) == 0))
95 if ((flags & (CH_UPDATE_LEN | CH_XMIT | CH_NOLEN)) &&
96 (ascii_strncasecmp ("Content-Length:", buf, 15) == 0 ||
97 ascii_strncasecmp ("Lines:", buf, 6) == 0))
99 if ((flags & CH_UPDATE_REFS) &&
100 ascii_strncasecmp ("References:", buf, 11) == 0)
102 if ((flags & CH_UPDATE_IRT) &&
103 ascii_strncasecmp ("In-Reply-To:", buf, 12) == 0)
108 if (!ignore && fputs (buf, out) == EOF)
118 /* We are going to read and collect the headers in an array
119 * so we are able to do re-ordering.
120 * First count the number of entries in the array
122 if (flags & CH_REORDER) {
123 for (t = HeaderOrderList; t; t = t->next) {
124 debug_print (1, ("Reorder list: %s\n", t->data));
129 debug_print (1, ("WEED is %s\n", (flags & CH_WEED) ? "Set" : "Not"));
131 headers = p_new(char *, hdr_count);
133 /* Read all the headers into the array */
134 while (ftello (in) < off_end) {
135 nl = strchr (buf, '\n');
138 if ((fgets (buf, sizeof (buf), in)) == NULL)
141 /* Is it the begining of a header? */
142 if (nl && buf[0] != ' ' && buf[0] != '\t') {
144 /* set curline to 1 for To:/Cc:/Bcc: and 0 otherwise */
145 curline = (flags & CH_WEED) && (ascii_strncmp ("To:", buf, 3) == 0 ||
146 ascii_strncmp ("Cc:", buf, 3) == 0 ||
147 ascii_strncmp ("Bcc:", buf, 4) == 0);
149 /* Do we have anything pending? */
151 if (flags & CH_DECODE) {
152 if (!address_header_decode (&this_one))
153 rfc2047_decode (&this_one);
157 headers[x] = this_one;
159 p_realloc(&headers[x], m_strlen(headers[x]) + m_strlen(this_one) + 1);
160 strcat(headers[x], this_one); /* __STRCAT_CHECKED__ */
169 if (!from && m_strncmp("From ", buf, 5) == 0) {
170 if ((flags & CH_FROM) == 0)
172 this_is_from = from = 1;
174 else if (buf[0] == '\n' || (buf[0] == '\r' && buf[1] == '\n'))
175 break; /* end of header */
177 /* note: CH_FROM takes precedence over header weeding. */
178 if (!((flags & CH_FROM) && (flags & CH_FORCE_FROM) && this_is_from) &&
180 mutt_matches_ignore (buf, Ignore) &&
181 !mutt_matches_ignore (buf, UnIgnore))
183 if ((flags & CH_WEED_DELIVERED) &&
184 ascii_strncasecmp ("Delivered-To:", buf, 13) == 0)
186 if ((flags & (CH_UPDATE | CH_XMIT | CH_NOSTATUS)) &&
187 (ascii_strncasecmp ("Status:", buf, 7) == 0 ||
188 ascii_strncasecmp ("X-Status:", buf, 9) == 0))
190 if ((flags & (CH_UPDATE_LEN | CH_XMIT | CH_NOLEN)) &&
191 (ascii_strncasecmp ("Content-Length:", buf, 15) == 0 ||
192 ascii_strncasecmp ("Lines:", buf, 6) == 0))
194 if ((flags & CH_MIME) &&
195 ((ascii_strncasecmp ("content-", buf, 8) == 0 &&
196 (ascii_strncasecmp ("transfer-encoding:", buf + 8, 18) == 0 ||
197 ascii_strncasecmp ("type:", buf + 8, 5) == 0)) ||
198 ascii_strncasecmp ("mime-version:", buf, 13) == 0))
200 if ((flags & CH_UPDATE_REFS) &&
201 ascii_strncasecmp ("References:", buf, 11) == 0)
203 if ((flags & CH_UPDATE_IRT) &&
204 ascii_strncasecmp ("In-Reply-To:", buf, 12) == 0)
207 /* Find x -- the array entry where this header is to be saved */
208 if (flags & CH_REORDER) {
209 for (t = HeaderOrderList, x = 0; (t); t = t->next, x++) {
210 if (!ascii_strncasecmp (buf, t->data, m_strlen(t->data))) {
211 debug_print (2, ("Reorder: %s matches %s\n", t->data, buf));
218 } /* If beginning of header */
221 debug_print (2, ("Reorder: x = %d; hdr_count = %d\n", x, hdr_count));
223 this_one = m_strdup(buf);
224 /* we do want to see all lines if this header doesn't feature
225 * abbreviations (curline is 0), $max_display_recips is 0 and
226 * while the number hasn't reached $max_display_recips yet */
227 else if (curline == 0 || MaxDispRecips == 0 || ++curline <= MaxDispRecips) {
228 p_realloc(&this_one, m_strlen(this_one) + m_strlen(buf) + 1);
229 strcat (this_one, buf); /* __STRCAT_CHECKED__ */
230 /* only for the first line which doesn't exeeds
231 * $max_display_recips: abbreviate it */
232 } else if (curline == MaxDispRecips+1) {
233 p_realloc(&this_one, m_strlen(this_one) + 5);
234 strcat (this_one, " ...");
237 } /* while (ftello (in) < off_end) */
239 /* Do we have anything pending? -- XXX, same code as in above in the loop. */
241 if (flags & CH_DECODE) {
242 if (!address_header_decode (&this_one))
243 rfc2047_decode (&this_one);
247 headers[x] = this_one;
249 p_realloc(&headers[x], m_strlen(headers[x]) + m_strlen(this_one) + 1);
250 strcat (headers[x], this_one); /* __STRCAT_CHECKED__ */
257 /* Now output the headers in order */
258 for (x = 0; x < hdr_count; x++) {
261 if (flags & CH_DECODE)
262 rfc2047_decode (&headers[x]);
265 /* We couldn't do the prefixing when reading because RFC 2047
266 * decoding may have concatenated lines.
268 if (flags & CH_PREFIX) {
269 char *ch = headers[x];
270 int print_prefix = 1;
274 if (fputs (prefix, out) == EOF) {
281 if (*ch == '\n' && ch[1])
284 if (putc (*ch++, out) == EOF) {
293 if (fputs (headers[x], out) == EOF) {
301 /* Free in a separate loop to be sure that all headers are freed
302 * in case of error. */
303 for (x = 0; x < hdr_count; x++)
304 p_delete(&headers[x]);
313 CH_DECODE RFC2047 header decoding
314 CH_FROM retain the "From " message separator
315 CH_FORCE_FROM give CH_FROM precedence over CH_WEED
316 CH_MIME ignore MIME fields
317 CH_NOLEN don't write Content-Length: and Lines:
318 CH_NONEWLINE don't output a newline after the header
319 CH_NOSTATUS ignore the Status: and X-Status:
320 CH_PREFIX quote header with $indent_str
321 CH_REORDER output header in order specified by `hdr_order'
322 CH_TXTPLAIN generate text/plain MIME headers [hack alert.]
323 CH_UPDATE write new Status: and X-Status:
324 CH_UPDATE_LEN write new Content-Length: and Lines:
325 CH_XMIT ignore Lines: and Content-Length:
326 CH_WEED do header weeding
327 CH_NOQFROM ignore ">From " line
328 CH_UPDATE_IRT update the In-Reply-To: header
329 CH_UPDATE_REFS update the References: header
332 string to use if CH_PREFIX is set
336 mutt_copy_header (FILE * in, HEADER * h, FILE * out, int flags,
339 char buffer[SHORT_STRING];
342 flags |= (h->env->irt_changed ? CH_UPDATE_IRT : 0) |
343 (h->env->refs_changed ? CH_UPDATE_REFS : 0);
345 if (mutt_copy_hdr (in, out, h->offset, h->content->offset, flags, prefix) ==
349 if (flags & CH_TXTPLAIN) {
350 char chsbuf[SHORT_STRING];
352 fputs ("MIME-Version: 1.0\n", out);
353 fputs ("Content-Transfer-Encoding: 8bit\n", out);
354 fputs ("Content-Type: text/plain; charset=", out);
355 mutt_canonical_charset (chsbuf, sizeof (chsbuf),
356 Charset ? Charset : "us-ascii");
357 rfc822_strcpy(buffer, sizeof(buffer), chsbuf, MimeSpecials);
361 if (ferror (out) != 0 || feof (out) != 0)
366 if (flags & CH_UPDATE) {
367 if ((flags & CH_NOSTATUS) == 0) {
368 if (h->env->irt_changed && h->env->in_reply_to) {
369 string_list_t *listp = h->env->in_reply_to;
371 if (fputs ("In-Reply-To: ", out) == EOF)
374 for (; listp; listp = listp->next)
375 if ((fputs (listp->data, out) == EOF) || (fputc (' ', out) == EOF))
378 if (fputc ('\n', out) == EOF)
382 if (h->env->refs_changed && h->env->references) {
383 string_list_t *listp = h->env->references, *refs = NULL, *t;
385 if (fputs ("References: ", out) == EOF)
388 /* Mutt stores references in reverse order, thus we create
389 * a reordered refs list that we can put in the headers */
390 for (; listp; listp = listp->next, refs = t) {
391 t = p_new(string_list_t, 1);
392 t->data = listp->data;
396 for (; refs; refs = refs->next)
397 if ((fputs (refs->data, out) == EOF) || (fputc (' ', out) == EOF))
400 /* clearing refs from memory */
401 for (t = refs; refs; refs = t->next, t = refs)
404 if (fputc ('\n', out) == EOF)
408 if (h->old || h->read) {
409 if (fputs ("Status: ", out) == EOF)
413 if (fputs ("RO", out) == EOF)
417 if (fputc ('O', out) == EOF)
421 if (fputc ('\n', out) == EOF)
425 if (h->flagged || h->replied) {
426 if (fputs ("X-Status: ", out) == EOF)
430 if (fputc ('A', out) == EOF)
435 if (fputc ('F', out) == EOF)
439 if (fputc ('\n', out) == EOF)
445 if (flags & CH_UPDATE_LEN && (flags & CH_NOLEN) == 0) {
446 fprintf (out, "Content-Length: %lld\n", h->content->length);
447 if (h->lines != 0 || h->content->length == 0)
448 fprintf (out, "Lines: %d\n", h->lines);
451 if ((flags & CH_NONEWLINE) == 0) {
452 if (flags & CH_PREFIX)
454 if (fputc ('\n', out) == EOF) /* add header terminator */
458 if (ferror (out) || feof (out))
464 /* Count the number of lines and bytes to be deleted in this body*/
465 static int count_delete_lines (FILE * fp, BODY * b, off_t *length,
473 fseeko (fp, b->offset, SEEK_SET);
474 for (l = b->length; l; l--) {
482 *length -= b->length - (84 + datelen);
483 /* Count the number of digits exceeding the first one to write the size */
484 for (l = 10; b->length >= l; l *= 10)
488 for (b = b->parts; b; b = b->next)
489 dellines += count_delete_lines (fp, b, length, datelen);
494 /* make a copy of a message
496 * fpout where to write output
497 * fpin where to get input
498 * hdr header of message being copied
499 * body structure of message being copied
501 * M_CM_NOHEADER don't copy header
502 * M_CM_PREFIX quote header and body
503 * M_CM_DECODE decode message body to text/plain
504 * M_CM_DISPLAY displaying output to the user
505 * M_CM_PRINTING printing the message
506 * M_CM_UPDATE update structures in memory after syncing
507 * M_CM_DECODE_PGP used for decoding PGP messages
508 * M_CM_CHARCONV perform character set conversion
509 * chflags flags to mutt_copy_header()
513 _mutt_copy_message (FILE * fpout, FILE * fpin, HEADER * hdr, BODY * body,
514 int flags, int chflags)
516 char prefix[SHORT_STRING];
518 off_t new_offset = -1;
521 if (flags & M_CM_PREFIX) {
522 if (option (OPTTEXTFLOWED))
523 m_strcpy(prefix, sizeof(prefix), ">");
525 _mutt_make_string (prefix, sizeof (prefix), NONULL (Prefix), Context,
529 if ((flags & M_CM_NOHEADER) == 0) {
530 if (flags & M_CM_PREFIX)
531 chflags |= CH_PREFIX;
533 else if (hdr->attach_del && (chflags & CH_UPDATE_LEN)) {
535 off_t new_length = body->length;
536 char date[SHORT_STRING];
538 mutt_make_date (date, sizeof (date));
539 date[5] = date[m_strlen(date) - 1] = '\"';
541 /* Count the number of lines and bytes to be deleted */
542 fseeko (fpin, body->offset, SEEK_SET);
543 new_lines = hdr->lines -
544 count_delete_lines (fpin, body, &new_length, m_strlen(date));
546 /* Copy the headers */
547 if (mutt_copy_header (fpin, hdr, fpout,
548 chflags | CH_NOLEN | CH_NONEWLINE, NULL))
550 fprintf (fpout, "Content-Length: %lld\n", new_length);
554 fprintf (fpout, "Lines: %d\n\n", new_lines);
555 if (ferror (fpout) || feof (fpout))
557 new_offset = ftello (fpout);
560 fseeko (fpin, body->offset, SEEK_SET);
561 if (copy_delete_attach (body, fpin, fpout, date))
566 off_t fail = ((ftello (fpout) - new_offset) - new_length);
569 mutt_error ("The length calculation was wrong by %ld bytes", fail);
576 /* Update original message if we are sync'ing a mailfolder */
577 if (flags & M_CM_UPDATE) {
579 hdr->lines = new_lines;
580 body->offset = new_offset;
582 /* update the total size of the mailbox to reflect this deletion */
583 Context->size -= body->length - new_length;
585 * if the message is visible, update the visible size of the mailbox
588 if (Context->v2r[hdr->msgno] != -1)
589 Context->vsize -= body->length - new_length;
591 body->length = new_length;
592 mutt_free_body (&body->parts);
598 if (mutt_copy_header (fpin, hdr, fpout, chflags,
599 (chflags & CH_PREFIX) ? prefix : NULL) == -1)
602 new_offset = ftello (fpout);
605 if (flags & M_CM_DECODE) {
606 /* now make a text/plain version of the message */
610 if (flags & M_CM_PREFIX)
612 if (flags & M_CM_DISPLAY)
613 s.flags |= M_DISPLAY;
614 if (flags & M_CM_PRINTING)
615 s.flags |= M_PRINTING;
616 if (flags & M_CM_WEED)
618 if (flags & M_CM_CHARCONV)
619 s.flags |= M_CHARCONV;
620 if (flags & M_CM_REPLYING)
621 s.flags |= M_REPLYING;
623 if (flags & M_CM_VERIFY)
626 rc = mutt_body_handler (body, &s);
628 else if ((flags & M_CM_DECODE_CRYPT) && (hdr->security & ENCRYPT)) {
632 if ((flags & M_CM_DECODE_PGP) && (hdr->security & APPLICATION_PGP) &&
633 hdr->content->type == TYPEMULTIPART) {
634 if (crypt_pgp_decrypt_mime (fpin, &fp, hdr->content, &cur))
636 fputs ("MIME-Version: 1.0\n", fpout);
639 if ((flags & M_CM_DECODE_SMIME) && (hdr->security & APPLICATION_SMIME)
640 && hdr->content->type == TYPEAPPLICATION) {
641 if (crypt_smime_decrypt_mime (fpin, &fp, hdr->content, &cur))
645 mutt_write_mime_header (cur, fpout);
648 fseeko (fp, cur->offset, 0);
649 if (mutt_copy_bytes (fp, fpout, cur->length) == -1) {
651 mutt_free_body (&cur);
654 mutt_free_body (&cur);
658 fseeko (fpin, body->offset, 0);
659 if (flags & M_CM_PREFIX) {
661 size_t bytes = body->length;
663 fputs (prefix, fpout);
665 while ((c = fgetc (fpin)) != EOF && bytes--) {
668 fputs (prefix, fpout);
672 else if (mutt_copy_bytes (fpin, fpout, body->length) == -1)
676 if ((flags & M_CM_UPDATE) && (flags & M_CM_NOHEADER) == 0
677 && new_offset != -1) {
678 body->offset = new_offset;
679 mutt_free_body (&body->parts);
686 mutt_copy_message (FILE * fpout, CONTEXT * src, HEADER * hdr, int flags,
692 if ((msg = mx_open_message (src, hdr->msgno)) == NULL)
695 _mutt_copy_message (fpout, msg->fp, hdr, hdr->content, flags,
696 chflags)) == 0 && (ferror (fpout)
698 debug_print (1, ("_mutt_copy_message failed to detect EOF!\n"));
701 mx_close_message (&msg);
705 /* appends a copy of the given message to a mailbox
707 * dest destination mailbox
708 * fpin where to get input
710 * hdr message being copied
711 * body structure of message being copied
712 * flags mutt_copy_message() flags
713 * chflags mutt_copy_header() flags
717 _mutt_append_message (CONTEXT * dest, FILE * fpin, CONTEXT * src __attribute__ ((unused)),
718 HEADER * hdr, BODY * body, int flags, int chflags) {
723 fseeko(fpin, hdr->offset, 0);
724 if (fgets (buf, sizeof (buf), fpin) == NULL)
726 if ((msg = mx_open_new_message (dest, hdr, is_from (buf, NULL, 0, NULL) ? 0 : M_ADD_FROM)) == NULL)
728 if (dest->magic == M_MBOX || dest->magic == M_MMDF)
729 chflags |= CH_FROM | CH_FORCE_FROM;
730 chflags |= (dest->magic == M_MAILDIR ? CH_NOSTATUS : CH_UPDATE);
731 r = _mutt_copy_message (msg->fp, fpin, hdr, body, flags, chflags);
732 if (mx_commit_message (msg, dest) != 0)
735 mx_close_message (&msg);
740 mutt_append_message (CONTEXT * dest, CONTEXT * src, HEADER * hdr, int cmflags,
746 if ((msg = mx_open_message (src, hdr->msgno)) == NULL)
749 _mutt_append_message (dest, msg->fp, src, hdr, hdr->content, cmflags,
751 mx_close_message (&msg);
756 * This function copies a message body, while deleting _in_the_copy_
757 * any attachments which are marked for deletion.
758 * Nothing is changed in the original message -- this is left to the caller.
760 * The function will return 0 on success and -1 on failure.
762 static int copy_delete_attach (BODY * b, FILE * fpin, FILE * fpout,
767 for (part = b->parts; part; part = part->next) {
768 if (part->deleted || part->parts) {
769 /* Copy till start of this part */
770 if (mutt_copy_bytes (fpin, fpout, part->hdr_offset - ftello (fpin)))
775 "Content-Type: message/external-body; access-type=x-mutt-deleted;\n"
776 "\texpiration=%s; length=%lld\n"
777 "\n", date + 5, part->length);
781 /* Copy the original mime headers */
782 if (mutt_copy_bytes (fpin, fpout, part->offset - ftello (fpin)))
785 /* Skip the deleted body */
786 fseeko (fpin, part->offset + part->length, SEEK_SET);
789 if (copy_delete_attach (part, fpin, fpout, date))
795 /* Copy the last parts */
796 if (mutt_copy_bytes (fpin, fpout, b->offset + b->length - ftello (fpin)))
803 * This function is the equivalent of mutt_write_address_list(),
804 * but writes to a buffer instead of writing to a stream.
805 * mutt_write_address_list could be re-used if we wouldn't store
806 * all the decoded headers in a huge array, first.
811 static void format_address_header (char **h, address_t * a)
813 char buf[HUGE_STRING];
817 int l, linelen, buflen, count;
819 linelen = m_strlen(*h);
820 buflen = linelen + 3;
823 p_realloc(h, buflen);
824 for (count = 0; a; a = a->next, count++) {
825 address_t *tmp = a->next;
828 *buf = *cbuf = *c2buf = '\0';
829 rfc822_write_address (buf, sizeof (buf), a, 0);
833 if (count && linelen + l > 74) {
834 strcpy (cbuf, "\n\t"); /* __STRCPY_CHECKED__ */
839 strcpy (cbuf, " "); /* __STRCPY_CHECKED__ */
844 if (!a->group && a->next && a->next->mailbox) {
847 strcpy (c2buf, ","); /* __STRCPY_CHECKED__ */
850 buflen += l + m_strlen(cbuf) + m_strlen(c2buf);
851 p_realloc(h, buflen);
852 strcat (*h, cbuf); /* __STRCAT_CHECKED__ */
853 strcat (*h, buf); /* __STRCAT_CHECKED__ */
854 strcat (*h, c2buf); /* __STRCAT_CHECKED__ */
857 /* Space for this was allocated in the beginning of this function. */
858 strcat (*h, "\n"); /* __STRCAT_CHECKED__ */
861 static int address_header_decode (char **h)
868 switch (tolower ((unsigned char) *s)) {
871 if (ascii_strncasecmp (s, "return-path:", 12) == 0) {
875 else if (ascii_strncasecmp (s, "reply-to:", 9) == 0) {
883 if (ascii_strncasecmp (s, "from:", 5))
890 if (ascii_strncasecmp (s, "cc:", 3))
898 if (ascii_strncasecmp (s, "bcc:", 4))
905 if (ascii_strncasecmp (s, "sender:", 7))
912 if (ascii_strncasecmp (s, "to:", 3))
919 if (ascii_strncasecmp (s, "mail-followup-to:", 17))
928 if ((a = rfc822_parse_adrlist (a, s + l)) == NULL)
931 mutt_addrlist_to_local (a);
932 rfc2047_decode_adrlist (a);
934 *h = p_dupstr(s, l + 1);
936 format_address_header (h, a);
938 address_list_wipe(&a);