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/macros.h>
15 #include <lib-lib/mem.h>
16 #include <lib-lib/str.h>
17 #include <lib-lib/file.h>
18 #include <lib-lib/ascii.h>
26 #include "mutt_crypt.h"
27 #include "mutt_idna.h"
29 #include "lib/debug.h"
34 #include <unistd.h> /* needed for SEEK_SET under SunOS 4.1.4 */
36 static int address_header_decode (char **str);
37 static int copy_delete_attach (BODY * b, FILE * fpin, FILE * fpout,
40 /* Ok, the only reason for not merging this with mutt_copy_header()
41 * below is to avoid creating a HEADER structure in message_handler().
44 mutt_copy_hdr (FILE* in, FILE* out, off_t off_start, off_t off_end,
45 int flags, const char *prefix) {
49 char buf[STRING]; /* should be long enough to get most fields in one pass */
55 char *this_one = NULL;
59 if (ftello (in) != off_start)
60 fseeko (in, off_start, 0);
66 (CH_REORDER | CH_WEED | CH_MIME | CH_DECODE | CH_PREFIX |
67 CH_WEED_DELIVERED)) == 0) {
68 /* Without these flags to complicate things
69 * we can do a more efficient line to line copying
71 while (ftello (in) < off_end) {
72 nl = strchr (buf, '\n');
74 if ((fgets (buf, sizeof (buf), in)) == NULL)
77 /* Is it the begining of a header? */
78 if (nl && buf[0] != ' ' && buf[0] != '\t') {
80 if (!from && str_ncmp ("From ", buf, 5) == 0) {
81 if ((flags & CH_FROM) == 0)
85 else if (flags & (CH_NOQFROM) &&
86 ascii_strncasecmp (">From ", buf, 6) == 0)
89 else if (buf[0] == '\n' || (buf[0] == '\r' && buf[1] == '\n'))
90 break; /* end of header */
92 if ((flags & (CH_UPDATE | CH_XMIT | CH_NOSTATUS)) &&
93 (ascii_strncasecmp ("Status:", buf, 7) == 0 ||
94 ascii_strncasecmp ("X-Status:", buf, 9) == 0))
96 if ((flags & (CH_UPDATE_LEN | CH_XMIT | CH_NOLEN)) &&
97 (ascii_strncasecmp ("Content-Length:", buf, 15) == 0 ||
98 ascii_strncasecmp ("Lines:", buf, 6) == 0))
100 if ((flags & CH_UPDATE_REFS) &&
101 ascii_strncasecmp ("References:", buf, 11) == 0)
103 if ((flags & CH_UPDATE_IRT) &&
104 ascii_strncasecmp ("In-Reply-To:", buf, 12) == 0)
109 if (!ignore && fputs (buf, out) == EOF)
119 /* We are going to read and collect the headers in an array
120 * so we are able to do re-ordering.
121 * First count the number of entries in the array
123 if (flags & CH_REORDER) {
124 for (t = HeaderOrderList; t; t = t->next) {
125 debug_print (1, ("Reorder list: %s\n", t->data));
130 debug_print (1, ("WEED is %s\n", (flags & CH_WEED) ? "Set" : "Not"));
132 headers = p_new(char *, hdr_count);
134 /* Read all the headers into the array */
135 while (ftello (in) < off_end) {
136 nl = strchr (buf, '\n');
139 if ((fgets (buf, sizeof (buf), in)) == NULL)
142 /* Is it the begining of a header? */
143 if (nl && buf[0] != ' ' && buf[0] != '\t') {
145 /* set curline to 1 for To:/Cc:/Bcc: and 0 otherwise */
146 curline = (flags & CH_WEED) && (ascii_strncmp ("To:", buf, 3) == 0 ||
147 ascii_strncmp ("Cc:", buf, 3) == 0 ||
148 ascii_strncmp ("Bcc:", buf, 4) == 0);
150 /* Do we have anything pending? */
152 if (flags & CH_DECODE) {
153 if (!address_header_decode (&this_one))
154 rfc2047_decode (&this_one);
158 headers[x] = this_one;
160 p_realloc(&headers[x], m_strlen(headers[x]) + m_strlen(this_one) + 1);
161 strcat(headers[x], this_one); /* __STRCAT_CHECKED__ */
170 if (!from && str_ncmp ("From ", buf, 5) == 0) {
171 if ((flags & CH_FROM) == 0)
173 this_is_from = from = 1;
175 else if (buf[0] == '\n' || (buf[0] == '\r' && buf[1] == '\n'))
176 break; /* end of header */
178 /* note: CH_FROM takes precedence over header weeding. */
179 if (!((flags & CH_FROM) && (flags & CH_FORCE_FROM) && this_is_from) &&
181 mutt_matches_ignore (buf, Ignore) &&
182 !mutt_matches_ignore (buf, UnIgnore))
184 if ((flags & CH_WEED_DELIVERED) &&
185 ascii_strncasecmp ("Delivered-To:", buf, 13) == 0)
187 if ((flags & (CH_UPDATE | CH_XMIT | CH_NOSTATUS)) &&
188 (ascii_strncasecmp ("Status:", buf, 7) == 0 ||
189 ascii_strncasecmp ("X-Status:", buf, 9) == 0))
191 if ((flags & (CH_UPDATE_LEN | CH_XMIT | CH_NOLEN)) &&
192 (ascii_strncasecmp ("Content-Length:", buf, 15) == 0 ||
193 ascii_strncasecmp ("Lines:", buf, 6) == 0))
195 if ((flags & CH_MIME) &&
196 ((ascii_strncasecmp ("content-", buf, 8) == 0 &&
197 (ascii_strncasecmp ("transfer-encoding:", buf + 8, 18) == 0 ||
198 ascii_strncasecmp ("type:", buf + 8, 5) == 0)) ||
199 ascii_strncasecmp ("mime-version:", buf, 13) == 0))
201 if ((flags & CH_UPDATE_REFS) &&
202 ascii_strncasecmp ("References:", buf, 11) == 0)
204 if ((flags & CH_UPDATE_IRT) &&
205 ascii_strncasecmp ("In-Reply-To:", buf, 12) == 0)
208 /* Find x -- the array entry where this header is to be saved */
209 if (flags & CH_REORDER) {
210 for (t = HeaderOrderList, x = 0; (t); t = t->next, x++) {
211 if (!ascii_strncasecmp (buf, t->data, m_strlen(t->data))) {
212 debug_print (2, ("Reorder: %s matches %s\n", t->data, buf));
219 } /* If beginning of header */
222 debug_print (2, ("Reorder: x = %d; hdr_count = %d\n", x, hdr_count));
224 this_one = m_strdup(buf);
225 /* we do want to see all lines if this header doesn't feature
226 * abbreviations (curline is 0), $max_display_recips is 0 and
227 * while the number hasn't reached $max_display_recips yet */
228 else if (curline == 0 || MaxDispRecips == 0 || ++curline <= MaxDispRecips) {
229 p_realloc(&this_one, m_strlen(this_one) + m_strlen(buf) + 1);
230 strcat (this_one, buf); /* __STRCAT_CHECKED__ */
231 /* only for the first line which doesn't exeeds
232 * $max_display_recips: abbreviate it */
233 } else if (curline == MaxDispRecips+1) {
234 p_realloc(&this_one, m_strlen(this_one) + 5);
235 strcat (this_one, " ...");
238 } /* while (ftello (in) < off_end) */
240 /* Do we have anything pending? -- XXX, same code as in above in the loop. */
242 if (flags & CH_DECODE) {
243 if (!address_header_decode (&this_one))
244 rfc2047_decode (&this_one);
248 headers[x] = this_one;
250 p_realloc(&headers[x], m_strlen(headers[x]) + m_strlen(this_one) + 1);
251 strcat (headers[x], this_one); /* __STRCAT_CHECKED__ */
258 /* Now output the headers in order */
259 for (x = 0; x < hdr_count; x++) {
262 if (flags & CH_DECODE)
263 rfc2047_decode (&headers[x]);
266 /* We couldn't do the prefixing when reading because RFC 2047
267 * decoding may have concatenated lines.
269 if (flags & CH_PREFIX) {
270 char *ch = headers[x];
271 int print_prefix = 1;
275 if (fputs (prefix, out) == EOF) {
282 if (*ch == '\n' && ch[1])
285 if (putc (*ch++, out) == EOF) {
294 if (fputs (headers[x], out) == EOF) {
302 /* Free in a separate loop to be sure that all headers are freed
303 * in case of error. */
304 for (x = 0; x < hdr_count; x++)
305 p_delete(&headers[x]);
314 CH_DECODE RFC2047 header decoding
315 CH_FROM retain the "From " message separator
316 CH_FORCE_FROM give CH_FROM precedence over CH_WEED
317 CH_MIME ignore MIME fields
318 CH_NOLEN don't write Content-Length: and Lines:
319 CH_NONEWLINE don't output a newline after the header
320 CH_NOSTATUS ignore the Status: and X-Status:
321 CH_PREFIX quote header with $indent_str
322 CH_REORDER output header in order specified by `hdr_order'
323 CH_TXTPLAIN generate text/plain MIME headers [hack alert.]
324 CH_UPDATE write new Status: and X-Status:
325 CH_UPDATE_LEN write new Content-Length: and Lines:
326 CH_XMIT ignore Lines: and Content-Length:
327 CH_WEED do header weeding
328 CH_NOQFROM ignore ">From " line
329 CH_UPDATE_IRT update the In-Reply-To: header
330 CH_UPDATE_REFS update the References: header
333 string to use if CH_PREFIX is set
337 mutt_copy_header (FILE * in, HEADER * h, FILE * out, int flags,
340 char buffer[SHORT_STRING];
343 flags |= (h->env->irt_changed ? CH_UPDATE_IRT : 0) |
344 (h->env->refs_changed ? CH_UPDATE_REFS : 0);
346 if (mutt_copy_hdr (in, out, h->offset, h->content->offset, flags, prefix) ==
350 if (flags & CH_TXTPLAIN) {
351 char chsbuf[SHORT_STRING];
353 fputs ("MIME-Version: 1.0\n", out);
354 fputs ("Content-Transfer-Encoding: 8bit\n", out);
355 fputs ("Content-Type: text/plain; charset=", out);
356 mutt_canonical_charset (chsbuf, sizeof (chsbuf),
357 Charset ? Charset : "us-ascii");
358 rfc822_cat (buffer, sizeof (buffer), chsbuf, MimeSpecials);
362 if (ferror (out) != 0 || feof (out) != 0)
367 if (flags & CH_UPDATE) {
368 if ((flags & CH_NOSTATUS) == 0) {
369 if (h->env->irt_changed && h->env->in_reply_to) {
370 LIST *listp = h->env->in_reply_to;
372 if (fputs ("In-Reply-To: ", out) == EOF)
375 for (; listp; listp = listp->next)
376 if ((fputs (listp->data, out) == EOF) || (fputc (' ', out) == EOF))
379 if (fputc ('\n', out) == EOF)
383 if (h->env->refs_changed && h->env->references) {
384 LIST *listp = h->env->references, *refs = NULL, *t;
386 if (fputs ("References: ", out) == EOF)
389 /* Mutt stores references in reverse order, thus we create
390 * a reordered refs list that we can put in the headers */
391 for (; listp; listp = listp->next, refs = t) {
393 t->data = listp->data;
397 for (; refs; refs = refs->next)
398 if ((fputs (refs->data, out) == EOF) || (fputc (' ', out) == EOF))
401 /* clearing refs from memory */
402 for (t = refs; refs; refs = t->next, t = refs)
405 if (fputc ('\n', out) == EOF)
409 if (h->old || h->read) {
410 if (fputs ("Status: ", out) == EOF)
414 if (fputs ("RO", out) == EOF)
418 if (fputc ('O', out) == EOF)
422 if (fputc ('\n', out) == EOF)
426 if (h->flagged || h->replied) {
427 if (fputs ("X-Status: ", out) == EOF)
431 if (fputc ('A', out) == EOF)
436 if (fputc ('F', out) == EOF)
440 if (fputc ('\n', out) == EOF)
446 if (flags & CH_UPDATE_LEN && (flags & CH_NOLEN) == 0) {
447 fprintf (out, "Content-Length: %zd\n", h->content->length);
448 if (h->lines != 0 || h->content->length == 0)
449 fprintf (out, "Lines: %d\n", h->lines);
452 if ((flags & CH_NONEWLINE) == 0) {
453 if (flags & CH_PREFIX)
455 if (fputc ('\n', out) == EOF) /* add header terminator */
459 if (ferror (out) || feof (out))
465 /* Count the number of lines and bytes to be deleted in this body*/
466 static int count_delete_lines (FILE * fp, BODY * b, off_t *length,
474 fseeko (fp, b->offset, SEEK_SET);
475 for (l = b->length; l; l--) {
483 *length -= b->length - (84 + datelen);
484 /* Count the number of digits exceeding the first one to write the size */
485 for (l = 10; b->length >= l; l *= 10)
489 for (b = b->parts; b; b = b->next)
490 dellines += count_delete_lines (fp, b, length, datelen);
495 /* make a copy of a message
497 * fpout where to write output
498 * fpin where to get input
499 * hdr header of message being copied
500 * body structure of message being copied
502 * M_CM_NOHEADER don't copy header
503 * M_CM_PREFIX quote header and body
504 * M_CM_DECODE decode message body to text/plain
505 * M_CM_DISPLAY displaying output to the user
506 * M_CM_PRINTING printing the message
507 * M_CM_UPDATE update structures in memory after syncing
508 * M_CM_DECODE_PGP used for decoding PGP messages
509 * M_CM_CHARCONV perform character set conversion
510 * chflags flags to mutt_copy_header()
514 _mutt_copy_message (FILE * fpout, FILE * fpin, HEADER * hdr, BODY * body,
515 int flags, int chflags)
517 char prefix[SHORT_STRING];
519 off_t new_offset = -1;
522 if (flags & M_CM_PREFIX) {
523 if (option (OPTTEXTFLOWED))
524 strfcpy (prefix, ">", sizeof (prefix));
526 _mutt_make_string (prefix, sizeof (prefix), NONULL (Prefix), Context,
530 if ((flags & M_CM_NOHEADER) == 0) {
531 if (flags & M_CM_PREFIX)
532 chflags |= CH_PREFIX;
534 else if (hdr->attach_del && (chflags & CH_UPDATE_LEN)) {
536 off_t new_length = body->length;
537 char date[SHORT_STRING];
539 mutt_make_date (date, sizeof (date));
540 date[5] = date[m_strlen(date) - 1] = '\"';
542 /* Count the number of lines and bytes to be deleted */
543 fseeko (fpin, body->offset, SEEK_SET);
544 new_lines = hdr->lines -
545 count_delete_lines (fpin, body, &new_length, m_strlen(date));
547 /* Copy the headers */
548 if (mutt_copy_header (fpin, hdr, fpout,
549 chflags | CH_NOLEN | CH_NONEWLINE, NULL))
551 fprintf (fpout, "Content-Length: %zd\n", new_length);
555 fprintf (fpout, "Lines: %d\n\n", new_lines);
556 if (ferror (fpout) || feof (fpout))
558 new_offset = ftello (fpout);
561 fseeko (fpin, body->offset, SEEK_SET);
562 if (copy_delete_attach (body, fpin, fpout, date))
567 off_t fail = ((ftello (fpout) - new_offset) - new_length);
570 mutt_error ("The length calculation was wrong by %ld bytes", fail);
577 /* Update original message if we are sync'ing a mailfolder */
578 if (flags & M_CM_UPDATE) {
580 hdr->lines = new_lines;
581 body->offset = new_offset;
583 /* update the total size of the mailbox to reflect this deletion */
584 Context->size -= body->length - new_length;
586 * if the message is visible, update the visible size of the mailbox
589 if (Context->v2r[hdr->msgno] != -1)
590 Context->vsize -= body->length - new_length;
592 body->length = new_length;
593 mutt_free_body (&body->parts);
599 if (mutt_copy_header (fpin, hdr, fpout, chflags,
600 (chflags & CH_PREFIX) ? prefix : NULL) == -1)
603 new_offset = ftello (fpout);
606 if (flags & M_CM_DECODE) {
607 /* now make a text/plain version of the message */
611 if (flags & M_CM_PREFIX)
613 if (flags & M_CM_DISPLAY)
614 s.flags |= M_DISPLAY;
615 if (flags & M_CM_PRINTING)
616 s.flags |= M_PRINTING;
617 if (flags & M_CM_WEED)
619 if (flags & M_CM_CHARCONV)
620 s.flags |= M_CHARCONV;
621 if (flags & M_CM_REPLYING)
622 s.flags |= M_REPLYING;
624 if (WithCrypto && flags & M_CM_VERIFY)
627 rc = mutt_body_handler (body, &s);
630 && (flags & M_CM_DECODE_CRYPT) && (hdr->security & ENCRYPT)) {
634 if ((WithCrypto & APPLICATION_PGP)
635 && (flags & M_CM_DECODE_PGP) && (hdr->security & APPLICATION_PGP) &&
636 hdr->content->type == TYPEMULTIPART) {
637 if (crypt_pgp_decrypt_mime (fpin, &fp, hdr->content, &cur))
639 fputs ("MIME-Version: 1.0\n", fpout);
642 if ((WithCrypto & APPLICATION_SMIME)
643 && (flags & M_CM_DECODE_SMIME) && (hdr->security & APPLICATION_SMIME)
644 && hdr->content->type == TYPEAPPLICATION) {
645 if (crypt_smime_decrypt_mime (fpin, &fp, hdr->content, &cur))
649 mutt_write_mime_header (cur, fpout);
652 fseeko (fp, cur->offset, 0);
653 if (mutt_copy_bytes (fp, fpout, cur->length) == -1) {
655 mutt_free_body (&cur);
658 mutt_free_body (&cur);
662 fseeko (fpin, body->offset, 0);
663 if (flags & M_CM_PREFIX) {
665 size_t bytes = body->length;
667 fputs (prefix, fpout);
669 while ((c = fgetc (fpin)) != EOF && bytes--) {
672 fputs (prefix, fpout);
676 else if (mutt_copy_bytes (fpin, fpout, body->length) == -1)
680 if ((flags & M_CM_UPDATE) && (flags & M_CM_NOHEADER) == 0
681 && new_offset != -1) {
682 body->offset = new_offset;
683 mutt_free_body (&body->parts);
690 mutt_copy_message (FILE * fpout, CONTEXT * src, HEADER * hdr, int flags,
696 if ((msg = mx_open_message (src, hdr->msgno)) == NULL)
699 _mutt_copy_message (fpout, msg->fp, hdr, hdr->content, flags,
700 chflags)) == 0 && (ferror (fpout)
702 debug_print (1, ("_mutt_copy_message failed to detect EOF!\n"));
705 mx_close_message (&msg);
709 /* appends a copy of the given message to a mailbox
711 * dest destination mailbox
712 * fpin where to get input
714 * hdr message being copied
715 * body structure of message being copied
716 * flags mutt_copy_message() flags
717 * chflags mutt_copy_header() flags
721 _mutt_append_message (CONTEXT * dest, FILE * fpin, CONTEXT * src,
722 HEADER * hdr, BODY * body, int flags, int chflags) {
727 fseeko(fpin, hdr->offset, 0);
728 if (fgets (buf, sizeof (buf), fpin) == NULL)
730 if ((msg = mx_open_new_message (dest, hdr, is_from (buf, NULL, 0, NULL) ? 0 : M_ADD_FROM)) == NULL)
732 if (dest->magic == M_MBOX || dest->magic == M_MMDF)
733 chflags |= CH_FROM | CH_FORCE_FROM;
734 chflags |= (dest->magic == M_MAILDIR ? CH_NOSTATUS : CH_UPDATE);
735 r = _mutt_copy_message (msg->fp, fpin, hdr, body, flags, chflags);
736 if (mx_commit_message (msg, dest) != 0)
739 mx_close_message (&msg);
744 mutt_append_message (CONTEXT * dest, CONTEXT * src, HEADER * hdr, int cmflags,
750 if ((msg = mx_open_message (src, hdr->msgno)) == NULL)
753 _mutt_append_message (dest, msg->fp, src, hdr, hdr->content, cmflags,
755 mx_close_message (&msg);
760 * This function copies a message body, while deleting _in_the_copy_
761 * any attachments which are marked for deletion.
762 * Nothing is changed in the original message -- this is left to the caller.
764 * The function will return 0 on success and -1 on failure.
766 static int copy_delete_attach (BODY * b, FILE * fpin, FILE * fpout,
771 for (part = b->parts; part; part = part->next) {
772 if (part->deleted || part->parts) {
773 /* Copy till start of this part */
774 if (mutt_copy_bytes (fpin, fpout, part->hdr_offset - ftello (fpin)))
779 "Content-Type: message/external-body; access-type=x-mutt-deleted;\n"
780 "\texpiration=%s; length=%zd\n"
781 "\n", date + 5, part->length);
785 /* Copy the original mime headers */
786 if (mutt_copy_bytes (fpin, fpout, part->offset - ftello (fpin)))
789 /* Skip the deleted body */
790 fseeko (fpin, part->offset + part->length, SEEK_SET);
793 if (copy_delete_attach (part, fpin, fpout, date))
799 /* Copy the last parts */
800 if (mutt_copy_bytes (fpin, fpout, b->offset + b->length - ftello (fpin)))
807 * This function is the equivalent of mutt_write_address_list(),
808 * but writes to a buffer instead of writing to a stream.
809 * mutt_write_address_list could be re-used if we wouldn't store
810 * all the decoded headers in a huge array, first.
815 static void format_address_header (char **h, ADDRESS * a)
817 char buf[HUGE_STRING];
821 int l, linelen, buflen, count;
823 linelen = m_strlen(*h);
824 buflen = linelen + 3;
827 p_realloc(h, buflen);
828 for (count = 0; a; a = a->next, count++) {
829 ADDRESS *tmp = a->next;
832 *buf = *cbuf = *c2buf = '\0';
833 rfc822_write_address (buf, sizeof (buf), a, 0);
837 if (count && linelen + l > 74) {
838 strcpy (cbuf, "\n\t"); /* __STRCPY_CHECKED__ */
843 strcpy (cbuf, " "); /* __STRCPY_CHECKED__ */
848 if (!a->group && a->next && a->next->mailbox) {
851 strcpy (c2buf, ","); /* __STRCPY_CHECKED__ */
854 buflen += l + m_strlen(cbuf) + m_strlen(c2buf);
855 p_realloc(h, buflen);
856 strcat (*h, cbuf); /* __STRCAT_CHECKED__ */
857 strcat (*h, buf); /* __STRCAT_CHECKED__ */
858 strcat (*h, c2buf); /* __STRCAT_CHECKED__ */
861 /* Space for this was allocated in the beginning of this function. */
862 strcat (*h, "\n"); /* __STRCAT_CHECKED__ */
865 static int address_header_decode (char **h)
872 switch (tolower ((unsigned char) *s)) {
875 if (ascii_strncasecmp (s, "return-path:", 12) == 0) {
879 else if (ascii_strncasecmp (s, "reply-to:", 9) == 0) {
887 if (ascii_strncasecmp (s, "from:", 5))
894 if (ascii_strncasecmp (s, "cc:", 3))
902 if (ascii_strncasecmp (s, "bcc:", 4))
909 if (ascii_strncasecmp (s, "sender:", 7))
916 if (ascii_strncasecmp (s, "to:", 3))
923 if (ascii_strncasecmp (s, "mail-followup-to:", 17))
932 if ((a = rfc822_parse_adrlist (a, s + l)) == NULL)
935 mutt_addrlist_to_local (a);
936 rfc2047_decode_adrlist (a);
938 *h = p_dupstr(s, l + 1);
940 format_address_header (h, a);
942 rfc822_free_address (&a);