3 * Miscellaneous functions for sending an email
6 * Copyright (C) 1996-2002,2009-2012 Michael R. Elkins <me@mutt.org>
9 * This program is free software: you can redistribute it and/or modify it under
10 * the terms of the GNU General Public License as published by the Free Software
11 * Foundation, either version 2 of the License, or (at your option) any later
14 * This program is distributed in the hope that it will be useful, but WITHOUT
15 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
16 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
19 * You should have received a copy of the GNU General Public License along with
20 * this program. If not, see <http://www.gnu.org/licenses/>.
24 * @page sendlib Miscellaneous functions for sending an email
26 * Miscellaneous functions for sending an email
44 #include "mutt/mutt.h"
45 #include "config/lib.h"
46 #include "email/lib.h"
57 #include "mutt_parse.h"
58 #include "mutt_window.h"
61 #include "ncrypt/ncrypt.h"
67 #include "nntp/nntp.h"
69 #ifdef HAVE_SYSEXITS_H
75 /* These Config Variables are only used in sendlib.c */
76 bool C_Allow8bit; ///< Config: Allow 8-bit messages, don't use quoted-printable or base64
77 char *C_AttachCharset; ///< Config: When attaching files, use one of these character sets
78 bool C_BounceDelivered; ///< Config: Add 'Delivered-To' to bounced messages
79 bool C_EncodeFrom; ///< Config: Encode 'From ' as 'quote-printable' at the beginning of lines
80 bool C_ForwardDecrypt; ///< Config: Decrypt the message when forwarding it
81 bool C_HiddenHost; ///< Config: Don't use the hostname, just the domain, when generating the message id
82 char *C_Inews; ///< Config: (nntp) External command to post news articles
83 bool C_MimeForwardDecode; ///< Config: Decode the forwarded message before attaching it
84 bool C_MimeSubject; ///< Config: (nntp) Encode the article subject in base64
85 char *C_MimeTypeQueryCommand; ///< Config: External command to determine the MIME type of an attachment
86 bool C_MimeTypeQueryFirst; ///< Config: Run the #C_MimeTypeQueryCommand before the mime.types lookup
87 char *C_Sendmail; ///< Config: External command to send email
88 short C_SendmailWait; ///< Config: Time to wait for sendmail to finish
89 bool C_Use8bitmime; ///< Config: Use 8-bit messages and ESMTP to send messages
90 bool C_UseEnvelopeFrom; ///< Config: Set the envelope sender of the message
91 bool C_UserAgent; ///< Config: Add a 'User-Agent' head to outgoing mail
92 short C_WrapHeaders; ///< Config: Width to wrap headers in outgoing messages
95 * encode_quoted - Encode text as quoted printable
96 * @param fc Cursor for converting a file's encoding
97 * @param fp_out File to store the result
98 * @param istext Is the input text?
100 static void encode_quoted(struct FgetConv *fc, FILE *fp_out, bool istext)
103 char line[77], savechar;
105 while ((c = mutt_ch_fgetconv(fc)) != EOF)
107 /* Wrap the line if needed. */
108 if ((linelen == 76) && ((istext && (c != '\n')) || !istext))
110 /* If the last character is "quoted", then be sure to move all three
111 * characters to the next line. Otherwise, just move the last
113 if (line[linelen - 3] == '=')
115 line[linelen - 3] = 0;
117 fputs("=\n", fp_out);
120 line[1] = line[linelen - 2];
121 line[2] = line[linelen - 1];
126 savechar = line[linelen - 1];
127 line[linelen - 1] = '=';
136 /* Escape lines that begin with/only contain "the message separator". */
137 if ((linelen == 4) && mutt_str_startswith(line, "From", CASE_MATCH))
139 mutt_str_strfcpy(line, "=46rom", sizeof(line));
142 else if ((linelen == 4) && mutt_str_startswith(line, "from", CASE_MATCH))
144 mutt_str_strfcpy(line, "=66rom", sizeof(line));
147 else if ((linelen == 1) && (line[0] == '.'))
149 mutt_str_strfcpy(line, "=2E", sizeof(line));
153 if ((c == '\n') && istext)
155 /* Check to make sure there is no trailing space on this line. */
156 if ((linelen > 0) && ((line[linelen - 1] == ' ') || (line[linelen - 1] == '\t')))
160 sprintf(line + linelen - 1, "=%2.2X", (unsigned char) line[linelen - 1]);
165 int savechar2 = line[linelen - 1];
167 line[linelen - 1] = '=';
170 fprintf(fp_out, "\n=%2.2X", (unsigned char) savechar2);
181 else if ((c != 9) && ((c < 32) || (c > 126) || (c == '=')))
183 /* Check to make sure there is enough room for the quoted character.
184 * If not, wrap to the next line. */
187 line[linelen++] = '=';
193 sprintf(line + linelen, "=%2.2X", (unsigned char) c);
198 /* Don't worry about wrapping the line here. That will happen during
199 * the next iteration when I'll also know what the next character is. */
204 /* Take care of anything left in the buffer */
207 if ((line[linelen - 1] == ' ') || (line[linelen - 1] == '\t'))
209 /* take care of trailing whitespace */
211 sprintf(line + linelen - 1, "=%2.2X", (unsigned char) line[linelen - 1]);
214 savechar = line[linelen - 1];
215 line[linelen - 1] = '=';
219 sprintf(line, "=%2.2X", (unsigned char) savechar);
229 * struct B64Context - Cursor for the Base64 conversion
239 * b64_init - Set up the base64 conversion
240 * @param bctx Cursor for the base64 conversion
243 static int b64_init(struct B64Context *bctx)
245 memset(bctx->buffer, '\0', sizeof(bctx->buffer));
253 * b64_flush - Save the bytes to the file
254 * @param bctx Cursor for the base64 conversion
255 * @param fp_out File to save the output
257 static void b64_flush(struct B64Context *bctx, FILE *fp_out)
259 /* for some reasons, mutt_b64_encode expects the
260 * output buffer to be larger than 10B */
267 if (bctx->linelen >= 72)
273 /* ret should always be equal to 4 here, because bctx->size
274 * is a value between 1 and 3 (included), but let's not hardcode it
275 * and prefer the return value of the function */
276 ret = mutt_b64_encode(bctx->buffer, bctx->size, encoded, sizeof(encoded));
277 for (size_t i = 0; i < ret; i++)
279 fputc(encoded[i], fp_out);
287 * b64_putc - Base64-encode one character
288 * @param bctx Cursor for the base64 conversion
289 * @param c Character to encode
290 * @param fp_out File to save the output
292 static void b64_putc(struct B64Context *bctx, char c, FILE *fp_out)
295 b64_flush(bctx, fp_out);
297 bctx->buffer[bctx->size++] = c;
301 * encode_base64 - Base64-encode some data
302 * @param fc Cursor for converting a file's encoding
303 * @param fp_out File to store the result
304 * @param istext Is the input text?
306 static void encode_base64(struct FgetConv *fc, FILE *fp_out, int istext)
308 struct B64Context bctx;
313 while ((ch = mutt_ch_fgetconv(fc)) != EOF)
320 if (istext && (ch == '\n') && (ch1 != '\r'))
321 b64_putc(&bctx, '\r', fp_out);
322 b64_putc(&bctx, ch, fp_out);
325 b64_flush(&bctx, fp_out);
330 * encode_8bit - Write the data as raw 8-bit data
331 * @param fc Cursor for converting a file's encoding
332 * @param fp_out File to store the result
334 static void encode_8bit(struct FgetConv *fc, FILE *fp_out)
338 while ((ch = mutt_ch_fgetconv(fc)) != EOF)
350 * mutt_write_mime_header - Create a MIME header
352 * @param fp File to write to
356 int mutt_write_mime_header(struct Body *a, FILE *fp)
358 fprintf(fp, "Content-Type: %s/%s", TYPE(a), a->subtype);
360 if (!TAILQ_EMPTY(&a->parameter))
362 size_t len = 25 + mutt_str_strlen(a->subtype); /* approximate len. of content-type */
364 struct Parameter *np = NULL;
365 TAILQ_FOREACH(np, &a->parameter, entries)
374 char buf[8192] = { 0 };
375 tmp = mutt_str_strdup(np->value);
376 const int encode = rfc2231_encode_string(&tmp);
377 mutt_addr_cat(buf, sizeof(buf), tmp, MimeSpecials);
379 /* Dirty hack to make messages readable by Outlook Express for the Mac:
380 * force quotes around the boundary parameter even when they aren't
383 if ((mutt_str_strcasecmp(np->attribute, "boundary") == 0) && (strcmp(buf, tmp) == 0))
385 snprintf(buf, sizeof(buf), "\"%s\"", tmp);
390 const int tmplen = mutt_str_strlen(buf) + mutt_str_strlen(np->attribute) + 1;
392 if (len + tmplen + 2 > 76)
403 fprintf(fp, "%s%s=%s", np->attribute, encode ? "*" : "", buf);
410 fprintf(fp, "Content-Language: %s\n", a->language);
413 fprintf(fp, "Content-Description: %s\n", a->description);
415 if (a->disposition != DISP_NONE)
417 const char *dispstr[] = { "inline", "attachment", "form-data" };
419 if (a->disposition < sizeof(dispstr) / sizeof(char *))
421 fprintf(fp, "Content-Disposition: %s", dispstr[a->disposition]);
423 if (a->use_disp && (a->disposition != DISP_INLINE))
425 char *fn = a->d_filename;
433 /* Strip off the leading path... */
434 char *t = strrchr(fn, '/');
442 tmp = mutt_str_strdup(t);
443 const int encode = rfc2231_encode_string(&tmp);
444 mutt_addr_cat(buf, sizeof(buf), tmp, MimeSpecials);
446 fprintf(fp, "; filename%s=%s", encode ? "*" : "", buf);
454 mutt_debug(LL_DEBUG1, "ERROR: invalid content-disposition %d\n", a->disposition);
458 if (a->encoding != ENC_7BIT)
459 fprintf(fp, "Content-Transfer-Encoding: %s\n", ENCODING(a->encoding));
461 if (C_CryptProtectedHeadersWrite && a->mime_headers)
462 mutt_rfc822_write_header(fp, a->mime_headers, NULL, MUTT_WRITE_HEADER_MIME, false, false);
464 /* Do NOT add the terminator here!!! */
465 return ferror(fp) ? -1 : 0;
469 * write_as_text_part - Should the Body be written as a text MIME part
470 * @param b Email to examine
471 * @retval true If the Body should be written as text
473 static bool write_as_text_part(struct Body *b)
475 return mutt_is_text_part(b) ||
476 (((WithCrypto & APPLICATION_PGP) != 0) && mutt_is_application_pgp(b));
480 * mutt_write_mime_body - Write a MIME part
481 * @param a Body to use
482 * @param fp File to write to
486 int mutt_write_mime_body(struct Body *a, FILE *fp)
489 struct FgetConv *fc = NULL;
491 if (a->type == TYPE_MULTIPART)
493 /* First, find the boundary to use */
494 const char *p = mutt_param_get(&a->parameter, "boundary");
497 mutt_debug(LL_DEBUG1, "no boundary parameter found\n");
498 mutt_error(_("No boundary parameter found [report this error]"));
502 mutt_str_strfcpy(boundary, p, sizeof(boundary));
504 for (struct Body *t = a->parts; t; t = t->next)
506 fprintf(fp, "\n--%s\n", boundary);
507 if (mutt_write_mime_header(t, fp) == -1)
510 if (mutt_write_mime_body(t, fp) == -1)
513 fprintf(fp, "\n--%s--\n", boundary);
514 return ferror(fp) ? -1 : 0;
517 /* This is pretty gross, but it's the best solution for now... */
518 if (((WithCrypto & APPLICATION_PGP) != 0) && (a->type == TYPE_APPLICATION) &&
519 (mutt_str_strcmp(a->subtype, "pgp-encrypted") == 0))
521 fputs("Version: 1\n", fp);
525 fp_in = fopen(a->filename, "r");
528 mutt_debug(LL_DEBUG1, "%s no longer exists\n", a->filename);
529 mutt_error(_("%s no longer exists"), a->filename);
533 if ((a->type == TYPE_TEXT) && (!a->noconv))
535 char send_charset[128];
536 fc = mutt_ch_fgetconv_open(
538 mutt_body_get_charset(a, send_charset, sizeof(send_charset)), 0);
541 fc = mutt_ch_fgetconv_open(fp_in, 0, 0, 0);
543 mutt_sig_allow_interrupt(1);
544 if (a->encoding == ENC_QUOTED_PRINTABLE)
545 encode_quoted(fc, fp, write_as_text_part(a));
546 else if (a->encoding == ENC_BASE64)
547 encode_base64(fc, fp, write_as_text_part(a));
548 else if ((a->type == TYPE_TEXT) && (!a->noconv))
551 mutt_file_copy_stream(fp_in, fp);
552 mutt_sig_allow_interrupt(0);
554 mutt_ch_fgetconv_close(&fc);
555 mutt_file_fclose(&fp_in);
562 return ferror(fp) ? -1 : 0;
566 * mutt_generate_boundary - Create a unique boundary id for a MIME part
567 * @param parm MIME part
569 void mutt_generate_boundary(struct ParameterList *parm)
571 char rs[MUTT_RANDTAG_LEN + 1];
573 mutt_rand_base32(rs, sizeof(rs) - 1);
574 rs[MUTT_RANDTAG_LEN] = 0;
575 mutt_param_set(parm, "boundary", rs);
579 * struct ContentState - Info about the body of an email
591 * update_content_info - Cache some info about an email
592 * @param info Info about an Attachment
593 * @param s Info about the Body of an email
594 * @param buf Buffer for the result
595 * @param buflen Length of the buffer
597 static void update_content_info(struct Content *info, struct ContentState *s,
598 char *buf, size_t buflen)
601 int whitespace = s->whitespace;
603 int linelen = s->linelen;
604 bool was_cr = s->was_cr;
606 if (!buf) /* This signals EOF */
610 if (linelen > info->linemax)
611 info->linemax = linelen;
616 for (; buflen; buf++, buflen--)
633 if (linelen > info->linemax)
634 info->linemax = linelen;
650 if (linelen > info->linemax)
651 info->linemax = linelen;
665 else if ((ch == '\t') || (ch == '\f'))
675 else if ((ch < 32) || (ch == 127))
681 if ((ch == 'F') || (ch == 'f'))
692 if ((linelen == 2) && (ch != 'r'))
694 else if ((linelen == 3) && (ch != 'o'))
696 else if (linelen == 4)
710 if ((ch != ' ') && (ch != '\t'))
715 s->whitespace = whitespace;
717 s->linelen = linelen;
722 * convert_file_to - Change the encoding of a file
723 * @param[in] fp File to convert
724 * @param[in] fromcode Original encoding
725 * @param[in] ncodes Number of target encodings
726 * @param[in] tocodes List of target encodings
727 * @param[out] tocode Chosen encoding
728 * @param[in] info Encoding information
729 * @retval -1 Error, no conversion was possible
730 * @retval >0 Success, number of bytes converted
732 * Find the best charset conversion of the file from fromcode into one
733 * of the tocodes. If successful, set *tocode and Content *info and
734 * return the number of characters converted inexactly.
736 * We convert via UTF-8 in order to avoid the condition -1(EINVAL),
737 * which would otherwise prevent us from knowing the number of inexact
738 * conversions. Where the candidate target charset is UTF-8 we avoid
739 * doing the second conversion because iconv_open("UTF-8", "UTF-8")
740 * fails with some libraries.
742 * We assume that the output from iconv is never more than 4 times as
743 * long as the input for any pair of charsets we might be interested
746 static size_t convert_file_to(FILE *fp, const char *fromcode, int ncodes,
747 const char **tocodes, int *tocode, struct Content *info)
749 char bufi[256], bufu[512], bufo[4 * sizeof(bufi)];
752 const iconv_t cd1 = mutt_ch_iconv_open("utf-8", fromcode, 0);
753 if (cd1 == (iconv_t)(-1))
756 iconv_t *cd = mutt_mem_calloc(ncodes, sizeof(iconv_t));
757 size_t *score = mutt_mem_calloc(ncodes, sizeof(size_t));
758 struct ContentState *states = mutt_mem_calloc(ncodes, sizeof(struct ContentState));
759 struct Content *infos = mutt_mem_calloc(ncodes, sizeof(struct Content));
761 for (int i = 0; i < ncodes; i++)
763 if (mutt_str_strcasecmp(tocodes[i], "utf-8") != 0)
764 cd[i] = mutt_ch_iconv_open(tocodes[i], "utf-8", 0);
767 /* Special case for conversion to UTF-8 */
768 cd[i] = (iconv_t)(-1);
769 score[i] = (size_t)(-1);
777 /* Try to fill input buffer */
778 size_t n = fread(bufi + ibl, 1, sizeof(bufi) - ibl, fp);
781 /* Convert to UTF-8 */
782 const char *ib = bufi;
784 size_t obl = sizeof(bufu);
785 n = iconv(cd1, (ICONV_CONST char **) (ibl ? &ib : 0), &ibl, &ob, &obl);
786 /* assert(n == (size_t)(-1) || !n); */
787 if ((n == (size_t)(-1)) && (((errno != EINVAL) && (errno != E2BIG)) || (ib == bufi)))
789 /* assert(errno == EILSEQ || (errno == EINVAL && ib == bufi && ibl < sizeof(bufi))); */
793 const size_t ubl1 = ob - bufu;
795 /* Convert from UTF-8 */
796 for (int i = 0; i < ncodes; i++)
798 if ((cd[i] != (iconv_t)(-1)) && (score[i] != (size_t)(-1)))
800 const char *ub = bufu;
804 n = iconv(cd[i], (ICONV_CONST char **) ((ibl || ubl) ? &ub : 0), &ubl, &ob, &obl);
805 if (n == (size_t)(-1))
807 /* assert(errno == E2BIG || (BUGGY_ICONV && (errno == EILSEQ || errno == ENOENT))); */
808 score[i] = (size_t)(-1);
813 update_content_info(&infos[i], &states[i], bufo, ob - bufo);
816 else if ((cd[i] == (iconv_t)(-1)) && (score[i] == (size_t)(-1)))
818 /* Special case for conversion to UTF-8 */
819 update_content_info(&infos[i], &states[i], bufu, ubl1);
825 /* Save unused input */
826 memmove(bufi, ib, ibl);
828 else if (!ubl1 && (ib < bufi + sizeof(bufi)))
837 /* Find best score */
839 for (int i = 0; i < ncodes; i++)
841 if ((cd[i] == (iconv_t)(-1)) && (score[i] == (size_t)(-1)))
843 /* Special case for conversion to UTF-8 */
848 else if ((cd[i] == (iconv_t)(-1)) || (score[i] == (size_t)(-1)))
850 else if ((ret == (size_t)(-1)) || (score[i] < ret))
858 if (ret != (size_t)(-1))
860 memcpy(info, &infos[*tocode], sizeof(struct Content));
861 update_content_info(info, &states[*tocode], 0, 0); /* EOF */
865 for (int i = 0; i < ncodes; i++)
866 if (cd[i] != (iconv_t)(-1))
879 * convert_file_from_to - Convert a file between encodings
880 * @param[in] fp File to read from
881 * @param[in] fromcodes Charsets to try converting FROM
882 * @param[in] tocodes Charsets to try converting TO
883 * @param[out] fromcode From charset selected
884 * @param[out] tocode To charset selected
885 * @param[out] info Info about the file
886 * @retval num Characters converted
887 * @retval -1 Error (as a size_t)
889 * Find the first of the fromcodes that gives a valid conversion and the best
890 * charset conversion of the file into one of the tocodes. If successful, set
891 * *fromcode and *tocode to dynamically allocated strings, set Content *info,
892 * and return the number of characters converted inexactly. If no conversion
893 * was possible, return -1.
895 * Both fromcodes and tocodes may be colon-separated lists of charsets.
896 * However, if fromcode is zero then fromcodes is assumed to be the name of a
897 * single charset even if it contains a colon.
899 static size_t convert_file_from_to(FILE *fp, const char *fromcodes, const char *tocodes,
900 char **fromcode, char **tocode, struct Content *info)
904 const char *c = NULL, *c1 = NULL;
908 /* Count the tocodes */
910 for (c = tocodes; c; c = c1 ? c1 + 1 : 0)
919 tcode = mutt_mem_malloc(ncodes * sizeof(char *));
920 for (c = tocodes, i = 0; c; c = c1 ? c1 + 1 : 0, i++)
925 tcode[i] = mutt_str_substr_dup(c, c1);
931 /* Try each fromcode in turn */
932 for (c = fromcodes; c; c = c1 ? c1 + 1 : 0)
937 fcode = mutt_str_substr_dup(c, c1);
939 ret = convert_file_to(fp, fcode, ncodes, (const char **) tcode, &cn, info);
940 if (ret != (size_t)(-1))
952 /* There is only one fromcode */
953 ret = convert_file_to(fp, fromcodes, ncodes, (const char **) tcode, &cn, info);
954 if (ret != (size_t)(-1))
962 for (i = 0; i < ncodes; i++)
971 * mutt_get_content_info - Analyze file to determine MIME encoding to use
972 * @param fname File to examine
973 * @param b Body to update
974 * @retval ptr Newly allocated Content
976 * Also set the body charset, sometimes, or not.
978 struct Content *mutt_get_content_info(const char *fname, struct Body *b)
980 struct Content *info = NULL;
981 struct ContentState state = { 0 };
983 char *fromcode = NULL;
993 if (stat(fname, &sb) == -1)
995 mutt_error(_("Can't stat %s: %s"), fname, strerror(errno));
999 if (!S_ISREG(sb.st_mode))
1001 mutt_error(_("%s isn't a regular file"), fname);
1005 fp = fopen(fname, "r");
1008 mutt_debug(LL_DEBUG1, "%s: %s (errno %d)\n", fname, strerror(errno), errno);
1012 info = mutt_mem_calloc(1, sizeof(struct Content));
1014 if (b && (b->type == TYPE_TEXT) && (!b->noconv && !b->force_charset))
1016 char *chs = mutt_param_get(&b->parameter, "charset");
1017 char *fchs = b->use_disp ?
1018 ((C_AttachCharset && *C_AttachCharset) ? C_AttachCharset : C_Charset) :
1020 if (C_Charset && (chs || C_SendCharset) &&
1021 (convert_file_from_to(fp, fchs, chs ? chs : C_SendCharset, &fromcode,
1022 &tocode, info) != (size_t)(-1)))
1027 mutt_ch_canonical_charset(chsbuf, sizeof(chsbuf), tocode);
1028 mutt_param_set(&b->parameter, "charset", chsbuf);
1031 b->charset = fromcode;
1033 mutt_file_fclose(&fp);
1039 while ((r = fread(buf, 1, sizeof(buf), fp)))
1040 update_content_info(info, &state, buf, r);
1041 update_content_info(info, &state, 0, 0);
1043 mutt_file_fclose(&fp);
1045 if (b && (b->type == TYPE_TEXT) && (!b->noconv && !b->force_charset))
1047 mutt_param_set(&b->parameter, "charset",
1050 C_Charset && !mutt_ch_is_us_ascii(C_Charset) ? C_Charset : "unknown-8bit"));
1057 * mutt_lookup_mime_type - Find the MIME type for an attachment
1058 * @param att Email with attachment
1059 * @param path Path to attachment
1060 * @retval num MIME type, e.g. #TYPE_IMAGE
1062 * Given a file at 'path', see if there is a registered MIME type.
1063 * Returns the major MIME type, and copies the subtype to "d". First look
1064 * in a system mime.types if we can find one, then look for ~/.mime.types.
1065 * The longest match is used so that we can match 'ps.gz' when 'gz' also
1068 int mutt_lookup_mime_type(struct Body *att, const char *path)
1071 char *p = NULL, *q = NULL, *ct = NULL;
1073 char subtype[256], xtype[256];
1074 int szf, sze, cur_sze;
1076 bool found_mimetypes = false;
1083 szf = mutt_str_strlen(path);
1085 for (int count = 0; count < 4; count++)
1087 /* can't use strtok() because we use it in an inner loop below, so use
1088 * a switch statement here instead. */
1091 /* last file with last entry to match wins type/xtype */
1093 /* check default unix mimetypes location first */
1094 mutt_str_strfcpy(buf, "/etc/mime.types", sizeof(buf));
1097 mutt_str_strfcpy(buf, SYSCONFDIR "/mime.types", sizeof(buf));
1100 mutt_str_strfcpy(buf, PKGDATADIR "/mime.types", sizeof(buf));
1103 snprintf(buf, sizeof(buf), "%s/.mime.types", NONULL(HomeDir));
1106 mutt_debug(LL_DEBUG1, "Internal error, count = %d\n", count);
1107 goto bye; /* shouldn't happen */
1110 fp = fopen(buf, "r");
1113 found_mimetypes = true;
1115 while (fgets(buf, sizeof(buf) - 1, fp))
1117 /* weed out any comments */
1118 p = strchr(buf, '#');
1122 /* remove any leading space. */
1126 /* position on the next field in this line */
1127 p = strpbrk(ct, " \t");
1133 /* cycle through the file extensions */
1134 while ((p = strtok(p, " \t\n")))
1136 sze = mutt_str_strlen(p);
1137 if ((sze > cur_sze) && (szf >= sze) &&
1138 ((mutt_str_strcasecmp(path + szf - sze, p) == 0) ||
1139 (mutt_str_strcasecmp(path + szf - sze, p) == 0)) &&
1140 ((szf == sze) || (path[szf - sze - 1] == '.')))
1142 /* get the content-type */
1144 p = strchr(ct, '/');
1147 /* malformed line, just skip it. */
1152 for (q = p; *q && !ISSPACE(*q); q++)
1155 mutt_str_substr_cpy(subtype, p, q, sizeof(subtype));
1157 type = mutt_check_mime_type(ct);
1158 if (type == TYPE_OTHER)
1159 mutt_str_strfcpy(xtype, ct, sizeof(xtype));
1166 mutt_file_fclose(&fp);
1172 /* no mime.types file found */
1173 if (!found_mimetypes)
1175 mutt_error(_("Could not find any mime.types file."));
1178 if ((type != TYPE_OTHER) || (*xtype != '\0'))
1181 mutt_str_replace(&att->subtype, subtype);
1182 mutt_str_replace(&att->xtype, xtype);
1189 * transform_to_7bit - Convert MIME parts to 7-bit
1190 * @param a Body of the email
1191 * @param fp_in File to read
1193 static void transform_to_7bit(struct Body *a, FILE *fp_in)
1196 struct State s = { 0 };
1199 for (; a; a = a->next)
1201 if (a->type == TYPE_MULTIPART)
1203 if (a->encoding != ENC_7BIT)
1204 a->encoding = ENC_7BIT;
1206 transform_to_7bit(a->parts, fp_in);
1208 else if (mutt_is_message_type(a->type, a->subtype))
1210 mutt_message_to_7bit(a, fp_in);
1215 a->force_charset = true;
1217 mutt_mktemp(buf, sizeof(buf));
1218 s.fp_out = mutt_file_fopen(buf, "w");
1221 mutt_perror("fopen");
1225 mutt_decode_attachment(a, &s);
1226 mutt_file_fclose(&s.fp_out);
1227 FREE(&a->d_filename);
1228 a->d_filename = a->filename;
1229 a->filename = mutt_str_strdup(buf);
1231 if (stat(a->filename, &sb) == -1)
1233 mutt_perror("stat");
1236 a->length = sb.st_size;
1238 mutt_update_encoding(a);
1239 if (a->encoding == ENC_8BIT)
1240 a->encoding = ENC_QUOTED_PRINTABLE;
1241 else if (a->encoding == ENC_BINARY)
1242 a->encoding = ENC_BASE64;
1248 * mutt_message_to_7bit - Convert an email's MIME parts to 7-bit
1249 * @param a Body of the email
1250 * @param fp File to read (OPTIONAL)
1252 void mutt_message_to_7bit(struct Body *a, FILE *fp)
1254 char temp[PATH_MAX];
1257 FILE *fp_out = NULL;
1260 if (!a->filename && fp)
1262 else if (!a->filename || !(fp_in = fopen(a->filename, "r")))
1264 mutt_error(_("Could not open %s"), a->filename ? a->filename : "(null)");
1270 if (stat(a->filename, &sb) == -1)
1272 mutt_perror("stat");
1273 mutt_file_fclose(&fp_in);
1275 a->length = sb.st_size;
1278 mutt_mktemp(temp, sizeof(temp));
1279 fp_out = mutt_file_fopen(temp, "w+");
1282 mutt_perror("fopen");
1289 fseeko(fp_in, a->offset, SEEK_SET);
1290 a->parts = mutt_rfc822_parse_message(fp_in, a);
1292 transform_to_7bit(a->parts, fp_in);
1294 mutt_copy_hdr(fp_in, fp_out, a->offset, a->offset + a->length,
1295 CH_MIME | CH_NONEWLINE | CH_XMIT, NULL);
1297 fputs("MIME-Version: 1.0\n", fp_out);
1298 mutt_write_mime_header(a->parts, fp_out);
1299 fputc('\n', fp_out);
1300 mutt_write_mime_body(a->parts, fp_out);
1305 if (fp_in && (fp_in != fp))
1306 mutt_file_fclose(&fp_in);
1308 mutt_file_fclose(&fp_out);
1312 a->encoding = ENC_7BIT;
1313 FREE(&a->d_filename);
1314 a->d_filename = a->filename;
1315 if (a->filename && a->unlink)
1316 unlink(a->filename);
1317 a->filename = mutt_str_strdup(temp);
1319 if (stat(a->filename, &sb) == -1)
1321 mutt_perror("stat");
1324 a->length = sb.st_size;
1325 mutt_body_free(&a->parts);
1326 a->email->content = NULL;
1330 * set_encoding - determine which Content-Transfer-Encoding to use
1331 * @param[in] b Body of email
1332 * @param[out] info Info about the email
1334 static void set_encoding(struct Body *b, struct Content *info)
1336 if (b->type == TYPE_TEXT)
1338 char send_charset[128];
1339 char *chsname = mutt_body_get_charset(b, send_charset, sizeof(send_charset));
1340 if ((info->lobin && !mutt_str_startswith(chsname, "iso-2022", CASE_IGNORE)) ||
1341 (info->linemax > 990) || (info->from && C_EncodeFrom))
1343 b->encoding = ENC_QUOTED_PRINTABLE;
1345 else if (info->hibin)
1347 b->encoding = C_Allow8bit ? ENC_8BIT : ENC_QUOTED_PRINTABLE;
1351 b->encoding = ENC_7BIT;
1354 else if ((b->type == TYPE_MESSAGE) || (b->type == TYPE_MULTIPART))
1356 if (info->lobin || info->hibin)
1358 if (C_Allow8bit && !info->lobin)
1359 b->encoding = ENC_8BIT;
1361 mutt_message_to_7bit(b, NULL);
1364 b->encoding = ENC_7BIT;
1366 else if ((b->type == TYPE_APPLICATION) &&
1367 (mutt_str_strcasecmp(b->subtype, "pgp-keys") == 0))
1369 b->encoding = ENC_7BIT;
1373 /* Determine which encoding is smaller */
1374 if (1.33 * (float) (info->lobin + info->hibin + info->ascii) <
1375 3.0 * (float) (info->lobin + info->hibin) + (float) info->ascii)
1377 b->encoding = ENC_BASE64;
1381 b->encoding = ENC_QUOTED_PRINTABLE;
1387 * mutt_stamp_attachment - Timestamp an Attachment
1388 * @param a Attachment
1390 void mutt_stamp_attachment(struct Body *a)
1392 a->stamp = time(NULL);
1396 * mutt_body_get_charset - Get a body's character set
1397 * @param b Body to examine
1398 * @param buf Buffer for the result
1399 * @param buflen Length of the buffer
1400 * @retval ptr Buffer containing character set
1401 * @retval NULL On error, or if not a text type
1403 char *mutt_body_get_charset(struct Body *b, char *buf, size_t buflen)
1407 if (b && (b->type != TYPE_TEXT))
1411 p = mutt_param_get(&b->parameter, "charset");
1414 mutt_ch_canonical_charset(buf, buflen, p);
1416 mutt_str_strfcpy(buf, "us-ascii", buflen);
1422 * mutt_update_encoding - Update the encoding type
1423 * @param a Body to update
1425 * Assumes called from send mode where Body->filename points to actual file
1427 void mutt_update_encoding(struct Body *a)
1429 struct Content *info = NULL;
1432 /* override noconv when it's us-ascii */
1433 if (mutt_ch_is_us_ascii(mutt_body_get_charset(a, chsbuf, sizeof(chsbuf))))
1436 if (!a->force_charset && !a->noconv)
1437 mutt_param_delete(&a->parameter, "charset");
1439 info = mutt_get_content_info(a->filename, a);
1443 set_encoding(a, info);
1444 mutt_stamp_attachment(a);
1451 * mutt_make_message_attach - Create a message attachment
1454 * @param attach_msg true if attaching a message
1455 * @retval ptr Newly allocated Body
1456 * @retval NULL Error
1458 struct Body *mutt_make_message_attach(struct Mailbox *m, struct Email *e, bool attach_msg)
1461 struct Body *body = NULL;
1463 CopyMessageFlags cmflags;
1464 SecurityFlags pgp = WithCrypto ? e->security : SEC_NO_FLAGS;
1468 if ((C_MimeForwardDecode || C_ForwardDecrypt) && (e->security & SEC_ENCRYPT))
1470 if (!crypt_valid_passphrase(e->security))
1475 mutt_mktemp(buf, sizeof(buf));
1476 fp = mutt_file_fopen(buf, "w+");
1480 body = mutt_body_new();
1481 body->type = TYPE_MESSAGE;
1482 body->subtype = mutt_str_strdup("rfc822");
1483 body->filename = mutt_str_strdup(buf);
1484 body->unlink = true;
1485 body->use_disp = false;
1486 body->disposition = DISP_INLINE;
1487 body->noconv = true;
1489 mutt_parse_mime_message(m, e);
1491 CopyHeaderFlags chflags = CH_XMIT;
1492 cmflags = MUTT_CM_NO_FLAGS;
1494 /* If we are attaching a message, ignore C_MimeForwardDecode */
1495 if (!attach_msg && C_MimeForwardDecode)
1497 chflags |= CH_MIME | CH_TXTPLAIN;
1498 cmflags = MUTT_CM_DECODE | MUTT_CM_CHARCONV;
1499 if (WithCrypto & APPLICATION_PGP)
1500 pgp &= ~PGP_ENCRYPT;
1501 if (WithCrypto & APPLICATION_SMIME)
1502 pgp &= ~SMIME_ENCRYPT;
1504 else if ((WithCrypto != 0) && C_ForwardDecrypt && (e->security & SEC_ENCRYPT))
1506 if (((WithCrypto & APPLICATION_PGP) != 0) && mutt_is_multipart_encrypted(e->content))
1508 chflags |= CH_MIME | CH_NONEWLINE;
1509 cmflags = MUTT_CM_DECODE_PGP;
1510 pgp &= ~PGP_ENCRYPT;
1512 else if (((WithCrypto & APPLICATION_PGP) != 0) &&
1513 ((mutt_is_application_pgp(e->content) & PGP_ENCRYPT) == PGP_ENCRYPT))
1515 chflags |= CH_MIME | CH_TXTPLAIN;
1516 cmflags = MUTT_CM_DECODE | MUTT_CM_CHARCONV;
1517 pgp &= ~PGP_ENCRYPT;
1519 else if (((WithCrypto & APPLICATION_SMIME) != 0) &&
1520 ((mutt_is_application_smime(e->content) & SMIME_ENCRYPT) == SMIME_ENCRYPT))
1522 chflags |= CH_MIME | CH_TXTPLAIN;
1523 cmflags = MUTT_CM_DECODE | MUTT_CM_CHARCONV;
1524 pgp &= ~SMIME_ENCRYPT;
1528 mutt_copy_message_ctx(fp, m, e, cmflags, chflags);
1533 body->email = mutt_email_new();
1534 body->email->offset = 0;
1535 /* we don't need the user headers here */
1536 body->email->env = mutt_rfc822_read_header(fp, body->email, false, false);
1538 body->email->security = pgp;
1539 mutt_update_encoding(body);
1540 body->parts = body->email->content;
1542 mutt_file_fclose(&fp);
1548 * run_mime_type_query - Run an external command to determine the MIME type
1549 * @param att Attachment
1551 * The command in $mime_type_query_command is run.
1553 static void run_mime_type_query(struct Body *att)
1556 char cmd[STR_COMMAND];
1562 mutt_file_expand_fmt_quote(cmd, sizeof(cmd), C_MimeTypeQueryCommand, att->filename);
1564 pid = mutt_create_filter(cmd, NULL, &fp, &fp_err);
1567 mutt_error(_("Error running \"%s\""), cmd);
1571 buf = mutt_file_read_line(buf, &buflen, fp, &dummy, 0);
1574 if (strchr(buf, '/'))
1575 mutt_parse_content_type(buf, att);
1579 mutt_file_fclose(&fp);
1580 mutt_file_fclose(&fp_err);
1581 mutt_wait_filter(pid);
1585 * mutt_make_file_attach - Create a file attachment
1586 * @param path File to attach
1587 * @retval ptr Newly allocated Body
1588 * @retval NULL Error
1590 struct Body *mutt_make_file_attach(const char *path)
1592 struct Body *att = mutt_body_new();
1593 att->filename = mutt_str_strdup(path);
1595 if (C_MimeTypeQueryCommand && *C_MimeTypeQueryCommand && C_MimeTypeQueryFirst)
1596 run_mime_type_query(att);
1598 /* Attempt to determine the appropriate content-type based on the filename
1601 mutt_lookup_mime_type(att, path);
1603 if (!att->subtype && C_MimeTypeQueryCommand && *C_MimeTypeQueryCommand && !C_MimeTypeQueryFirst)
1605 run_mime_type_query(att);
1608 struct Content *info = mutt_get_content_info(path, att);
1611 mutt_body_free(&att);
1617 if ((info->nulbin == 0) &&
1618 ((info->lobin == 0) || ((info->lobin + info->hibin + info->ascii) / info->lobin >= 10)))
1620 /* Statistically speaking, there should be more than 10% "lobin"
1621 * chars if this is really a binary file... */
1622 att->type = TYPE_TEXT;
1623 att->subtype = mutt_str_strdup("plain");
1627 att->type = TYPE_APPLICATION;
1628 att->subtype = mutt_str_strdup("octet-stream");
1633 mutt_update_encoding(att);
1638 * get_toplevel_encoding - Find the most restrictive encoding type
1639 * @param a Body to examine
1640 * @retval num Encoding type, e.g. #ENC_7BIT
1642 static int get_toplevel_encoding(struct Body *a)
1646 for (; a; a = a->next)
1648 if (a->encoding == ENC_BINARY)
1650 else if (a->encoding == ENC_8BIT)
1658 * check_boundary - check for duplicate boundary
1659 * @param boundary Boundary to look for
1660 * @param b Body parts to check
1661 * @retval true if duplicate found
1663 static bool check_boundary(const char *boundary, struct Body *b)
1667 if (b->parts && check_boundary(boundary, b->parts))
1670 if (b->next && check_boundary(boundary, b->next))
1673 p = mutt_param_get(&b->parameter, "boundary");
1674 if (p && (mutt_str_strcmp(p, boundary) == 0))
1682 * mutt_make_multipart - Create a multipart email
1683 * @param b Body of email to start
1684 * @retval ptr Newly allocated Body
1686 struct Body *mutt_make_multipart(struct Body *b)
1688 struct Body *new = mutt_body_new();
1689 new->type = TYPE_MULTIPART;
1690 new->subtype = mutt_str_strdup("mixed");
1691 new->encoding = get_toplevel_encoding(b);
1694 mutt_generate_boundary(&new->parameter);
1695 if (check_boundary(mutt_param_get(&new->parameter, "boundary"), b))
1696 mutt_param_delete(&new->parameter, "boundary");
1697 } while (!mutt_param_get(&new->parameter, "boundary"));
1698 new->use_disp = false;
1699 new->disposition = DISP_INLINE;
1706 * mutt_remove_multipart - Extract the multipart body if it exists
1707 * @param b Body to alter
1708 * @retval ptr The parts of the Body
1710 * @note The original Body is freed
1712 struct Body *mutt_remove_multipart(struct Body *b)
1714 struct Body *t = NULL;
1727 * mutt_write_address_list - wrapper around mutt_write_address()
1728 * @param addr Address list
1729 * @param fp File to write to
1730 * @param linelen Line length to use
1731 * @param display True if these addresses will be displayed to the user
1733 * So we can handle very large recipient lists without needing a huge temporary
1736 void mutt_write_address_list(struct Address *addr, FILE *fp, int linelen, bool display)
1738 struct Address *tmp = NULL;
1747 mutt_addr_write(buf, sizeof(buf), addr, display);
1748 size_t len = mutt_str_strlen(buf);
1749 if (count && (linelen + len > 74))
1752 linelen = len + 8; /* tab is usually about 8 spaces... */
1756 if (count && addr->mailbox)
1765 if (!addr->group && addr->next && addr->next->mailbox)
1777 * mutt_write_references - Add the message references to a list
1778 * @param r String List of references
1779 * @param fp File to write to
1780 * @param trim Trim the list to at most this many items
1782 * Write the list in reverse because they are stored in reverse order when
1783 * parsed to speed up threading.
1785 void mutt_write_references(const struct ListHead *r, FILE *fp, size_t trim)
1787 struct ListNode *np = NULL;
1790 STAILQ_FOREACH(np, r, entries)
1792 if (++length == trim)
1796 struct ListNode **ref = mutt_mem_calloc(length, sizeof(struct ListNode *));
1798 // store in reverse order
1799 size_t tmp = length;
1800 STAILQ_FOREACH(np, r, entries)
1807 for (size_t i = 0; i < length; i++)
1810 fputs(ref[i]->data, fp);
1811 if (i != length - 1)
1819 * print_val - Add pieces to an email header, wrapping where necessary
1820 * @param fp File to write to
1821 * @param pfx Prefix for headers
1822 * @param value Text to be added
1823 * @param chflags Flags, see #CopyHeaderFlags
1824 * @param col Column that this text starts at
1826 * @retval -1 Failure
1828 static int print_val(FILE *fp, const char *pfx, const char *value,
1829 CopyHeaderFlags chflags, size_t col)
1831 while (value && *value)
1833 if (fputc(*value, fp) == EOF)
1835 /* corner-case: break words longer than 998 chars by force,
1836 * mandated by RFC5322 */
1837 if (!(chflags & CH_DISPLAY) && (++col >= 998))
1839 if (fputs("\n ", fp) < 0)
1845 if (*(value + 1) && pfx && *pfx && (fputs(pfx, fp) == EOF))
1847 /* for display, turn folding spaces into folding tabs */
1848 if ((chflags & CH_DISPLAY) && ((*(value + 1) == ' ') || (*(value + 1) == '\t')))
1851 while (*value && ((*value == ' ') || (*value == '\t')))
1853 if (fputc('\t', fp) == EOF)
1864 * fold_one_header - Fold one header line
1865 * @param fp File to write to
1866 * @param tag Header key, e.g. "From"
1867 * @param value Header value
1868 * @param pfx Prefix for header
1869 * @param wraplen Column to wrap at
1870 * @param chflags Flags, see #CopyHeaderFlags
1872 * @retval -1 Failure
1874 static int fold_one_header(FILE *fp, const char *tag, const char *value,
1875 const char *pfx, int wraplen, CopyHeaderFlags chflags)
1877 const char *p = value;
1878 char buf[8192] = "";
1879 int first = 1, col = 0, l = 0;
1880 const bool display = (chflags & CH_DISPLAY);
1882 mutt_debug(5, "pfx=[%s], tag=[%s], flags=%d value=[%s]\n", pfx, tag, chflags,
1885 if (tag && *tag && (fprintf(fp, "%s%s: ", NONULL(pfx), tag) < 0))
1887 col = mutt_str_strlen(tag) + ((tag && *tag) ? 2 : 0) + mutt_str_strlen(pfx);
1893 /* find the next word and place it in 'buf'. it may start with
1894 * whitespace we can fold before */
1895 const char *next = mutt_str_find_word(p);
1896 l = MIN(sizeof(buf) - 1, next - p);
1900 /* determine width: character cells for display, bytes for sending
1901 * (we get pure ascii only) */
1902 const int w = mutt_mb_width(buf, col, display);
1903 const int enc = mutt_str_startswith(buf, "=?", CASE_MATCH);
1905 mutt_debug(5, "word=[%s], col=%d, w=%d, next=[0x0%x]\n", buf, col, w, *next);
1907 /* insert a folding \n before the current word's lwsp except for
1908 * header name, first word on a line (word longer than wrap width)
1909 * and encoded words */
1910 if (!first && !enc && col && (col + w >= wraplen))
1912 col = mutt_str_strlen(pfx);
1914 if (fprintf(fp, "\n%s", NONULL(pfx)) <= 0)
1918 /* print the actual word; for display, ignore leading ws for word
1919 * and fold with tab for readability */
1920 if (display && fold)
1923 while (*pc && ((*pc == ' ') || (*pc == '\t')))
1928 if (fputc('\t', fp) == EOF)
1930 if (print_val(fp, pfx, pc, chflags, col) < 0)
1934 else if (print_val(fp, pfx, buf, chflags, col) < 0)
1938 /* if the current word ends in \n, ignore all its trailing spaces
1939 * and reset column; this prevents us from putting only spaces (or
1940 * even none) on a line if the trailing spaces are located at our
1941 * current line width
1942 * XXX this covers ASCII space only, for display we probably
1943 * want something like iswspace() here */
1944 const char *sp = next;
1945 while (*sp && ((*sp == ' ') || (*sp == '\t')))
1957 /* if we have printed something but didn't \n-terminate it, do it
1958 * except the last word we printed ended in \n already */
1959 if (col && ((l == 0) || (buf[l - 1] != '\n')))
1960 if (putc('\n', fp) == EOF)
1967 * unfold_header - Unfold a wrapped email header
1968 * @param s String to process
1969 * @retval ptr Unfolded string
1971 * @note The string is altered in-place
1973 static char *unfold_header(char *s)
1975 char *p = s, *q = s;
1979 /* remove CRLF prior to FWSP, turn \t into ' ' */
1980 if ((*p == '\r') && *(p + 1) && (*(p + 1) == '\n') && *(p + 2) &&
1981 ((*(p + 2) == ' ') || (*(p + 2) == '\t')))
1987 /* remove LF prior to FWSP, turn \t into ' ' */
1988 else if ((*p == '\n') && *(p + 1) && ((*(p + 1) == ' ') || (*(p + 1) == '\t')))
2003 * write_one_header - Write out one header line
2004 * @param fp File to write to
2005 * @param pfxw Width of prefix string
2006 * @param max Max width
2007 * @param wraplen Column to wrap at
2008 * @param pfx Prefix for header
2009 * @param start Start of header line
2010 * @param end End of header line
2011 * @param chflags Flags, see #CopyHeaderFlags
2013 * @retval -1 Failure
2015 static int write_one_header(FILE *fp, int pfxw, int max, int wraplen, const char *pfx,
2016 const char *start, const char *end, CopyHeaderFlags chflags)
2018 char *tagbuf = NULL, *valbuf = NULL, *t = NULL;
2019 bool is_from = ((end - start) > 5) && mutt_str_startswith(start, "from ", CASE_IGNORE);
2021 /* only pass through folding machinery if necessary for sending,
2022 * never wrap From_ headers on sending */
2023 if (!(chflags & CH_DISPLAY) && ((pfxw + max <= wraplen) || is_from))
2025 valbuf = mutt_str_substr_dup(start, end);
2026 mutt_debug(5, "buf[%s%s] short enough, max width = %d <= %d\n", NONULL(pfx),
2027 valbuf, max, wraplen);
2030 if (fputs(pfx, fp) == EOF)
2037 t = strchr(valbuf, ':');
2040 mutt_debug(LL_DEBUG1, "#1 warning: header not in 'key: value' format!\n");
2044 if (print_val(fp, pfx, valbuf, chflags, mutt_str_strlen(pfx)) < 0)
2053 t = strchr(start, ':');
2054 if (!t || (t > end))
2056 mutt_debug(LL_DEBUG1, "#2 warning: header not in 'key: value' format!\n");
2062 valbuf = mutt_str_substr_dup(start, end);
2066 tagbuf = mutt_str_substr_dup(start, t);
2067 /* skip over the colon separating the header field name and value */
2070 /* skip over any leading whitespace (WSP, as defined in RFC5322)
2071 * NOTE: mutt_str_skip_email_wsp() does the wrong thing here.
2072 * See tickets 3609 and 3716. */
2073 while ((*t == ' ') || (*t == '\t'))
2076 valbuf = mutt_str_substr_dup(t, end);
2078 mutt_debug(LL_DEBUG2, "buf[%s%s] too long, max width = %d > %d\n",
2079 NONULL(pfx), NONULL(valbuf), max, wraplen);
2080 if (fold_one_header(fp, tagbuf, valbuf, pfx, wraplen, chflags) < 0)
2093 * mutt_write_one_header - Write one header line to a file
2094 * @param fp File to write to
2095 * @param tag Header key, e.g. "From"
2096 * @param value Header value
2097 * @param pfx Prefix for header
2098 * @param wraplen Column to wrap at
2099 * @param chflags Flags, see #CopyHeaderFlags
2101 * @retval -1 Failure
2103 * split several headers into individual ones and call write_one_header
2106 int mutt_write_one_header(FILE *fp, const char *tag, const char *value,
2107 const char *pfx, int wraplen, CopyHeaderFlags chflags)
2109 char *p = (char *) value, *last = NULL, *line = NULL;
2110 int max = 0, w, rc = -1;
2111 int pfxw = mutt_strwidth(pfx);
2112 char *v = mutt_str_strdup(value);
2113 bool display = (chflags & CH_DISPLAY);
2115 if (!display || C_Weed)
2116 v = unfold_header(v);
2118 /* when not displaying, use sane wrap value */
2121 if ((C_WrapHeaders < 78) || (C_WrapHeaders > 998))
2124 wraplen = C_WrapHeaders;
2126 else if ((wraplen <= 0) || (wraplen > MuttIndexWindow->cols))
2127 wraplen = MuttIndexWindow->cols;
2131 /* if header is short enough, simply print it */
2132 if (!display && (mutt_strwidth(tag) + 2 + pfxw + mutt_strwidth(v) <= wraplen))
2134 mutt_debug(5, "buf[%s%s: %s] is short enough\n", NONULL(pfx), tag, v);
2135 if (fprintf(fp, "%s%s: %s\n", NONULL(pfx), tag, v) <= 0)
2142 rc = fold_one_header(fp, tag, v, pfx, wraplen, chflags);
2152 p = strchr(p, '\n');
2154 /* find maximum line width in current header */
2157 w = mutt_mb_width(line, 0, display);
2167 if ((*p != ' ') && (*p != '\t'))
2169 if (write_one_header(fp, pfxw, max, wraplen, pfx, last, p, chflags) < 0)
2177 if (write_one_header(fp, pfxw, max, wraplen, pfx, last, p, chflags) < 0)
2188 * mutt_rfc822_write_header - Write out one RFC822 header line
2189 * @param fp File to write to
2190 * @param env Envelope of email
2191 * @param attach Attachment
2192 * @param mode Mode, see #MuttWriteHeaderMode
2193 * @param privacy If true, remove headers that might identify the user
2194 * @param hide_protected_subject If true, replace subject header
2196 * @retval -1 Failure
2198 * Note: all RFC2047 encoding should be done outside of this routine, except
2199 * for the "real name." This will allow this routine to be used more than
2200 * once, if necessary.
2202 * Likewise, all IDN processing should happen outside of this routine.
2204 * privacy true => will omit any headers which may identify the user.
2205 * Output generated is suitable for being sent through
2206 * anonymous remailer chains.
2208 * hide_protected_subject: replaces the Subject header with
2209 * $crypt_protected_headers_subject in NORMAL or POSTPONE mode.
2211 int mutt_rfc822_write_header(FILE *fp, struct Envelope *env,
2212 struct Body *attach, enum MuttWriteHeaderMode mode,
2213 bool privacy, bool hide_protected_subject)
2216 char *p = NULL, *q = NULL;
2217 bool has_agent = false; /* user defined user-agent header field exists */
2219 if ((mode == MUTT_WRITE_HEADER_NORMAL) && !privacy)
2220 fputs(mutt_date_make_date(buf, sizeof(buf)), fp);
2222 /* UseFrom is not consulted here so that we can still write a From:
2223 * field if the user sets it with the 'my_hdr' command */
2224 if (env->from && !privacy)
2227 mutt_addr_write(buf, sizeof(buf), env->from, false);
2228 fprintf(fp, "From: %s\n", buf);
2231 if (env->sender && !privacy)
2234 mutt_addr_write(buf, sizeof(buf), env->sender, false);
2235 fprintf(fp, "Sender: %s\n", buf);
2241 mutt_write_address_list(env->to, fp, 4, 0);
2243 else if (mode == MUTT_WRITE_HEADER_EDITHDRS)
2252 mutt_write_address_list(env->cc, fp, 4, 0);
2254 else if (mode == MUTT_WRITE_HEADER_EDITHDRS)
2262 if ((mode == MUTT_WRITE_HEADER_POSTPONE) || (mode == MUTT_WRITE_HEADER_EDITHDRS) ||
2263 ((mode == MUTT_WRITE_HEADER_NORMAL) && C_WriteBcc))
2266 mutt_write_address_list(env->bcc, fp, 5, 0);
2269 else if (mode == MUTT_WRITE_HEADER_EDITHDRS)
2273 fputs("Bcc:\n", fp);
2276 if (env->newsgroups)
2277 fprintf(fp, "Newsgroups: %s\n", env->newsgroups);
2278 else if ((mode == MUTT_WRITE_HEADER_EDITHDRS) && OptNewsSend)
2279 fputs("Newsgroups:\n", fp);
2281 if (env->followup_to)
2282 fprintf(fp, "Followup-To: %s\n", env->followup_to);
2283 else if ((mode == MUTT_WRITE_HEADER_EDITHDRS) && OptNewsSend)
2284 fputs("Followup-To:\n", fp);
2286 if (env->x_comment_to)
2287 fprintf(fp, "X-Comment-To: %s\n", env->x_comment_to);
2288 else if ((mode == MUTT_WRITE_HEADER_EDITHDRS) && OptNewsSend && C_XCommentTo)
2289 fputs("X-Comment-To:\n", fp);
2294 if (hide_protected_subject &&
2295 ((mode == MUTT_WRITE_HEADER_NORMAL) || (mode == MUTT_WRITE_HEADER_POSTPONE)))
2296 mutt_write_one_header(fp, "Subject", C_CryptProtectedHeadersSubject, NULL, 0, 0);
2298 mutt_write_one_header(fp, "Subject", env->subject, NULL, 0, 0);
2300 else if (mode == MUTT_WRITE_HEADER_EDITHDRS)
2301 fputs("Subject:\n", fp);
2303 /* save message id if the user has set it */
2304 if (env->message_id && !privacy)
2305 fprintf(fp, "Message-ID: %s\n", env->message_id);
2309 fputs("Reply-To: ", fp);
2310 mutt_write_address_list(env->reply_to, fp, 10, 0);
2312 else if (mode == MUTT_WRITE_HEADER_EDITHDRS)
2313 fputs("Reply-To:\n", fp);
2315 if (env->mail_followup_to)
2320 fputs("Mail-Followup-To: ", fp);
2321 mutt_write_address_list(env->mail_followup_to, fp, 18, 0);
2324 if ((mode == MUTT_WRITE_HEADER_NORMAL) || (mode == MUTT_WRITE_HEADER_POSTPONE))
2326 if (!STAILQ_EMPTY(&env->references))
2328 fputs("References:", fp);
2329 mutt_write_references(&env->references, fp, 10);
2333 /* Add the MIME headers */
2334 fputs("MIME-Version: 1.0\n", fp);
2335 mutt_write_mime_header(attach, fp);
2338 if (!STAILQ_EMPTY(&env->in_reply_to))
2340 fputs("In-Reply-To:", fp);
2341 mutt_write_references(&env->in_reply_to, fp, 0);
2345 /* Add any user defined headers */
2346 struct ListNode *tmp = NULL;
2347 STAILQ_FOREACH(tmp, &env->userhdrs, entries)
2349 p = strchr(tmp->data, ':');
2356 p = mutt_str_skip_email_wsp(p + 1);
2360 continue; /* don't emit empty fields. */
2363 /* check to see if the user has overridden the user-agent field */
2364 if (mutt_str_startswith(tmp->data, "user-agent", CASE_IGNORE))
2374 mutt_write_one_header(fp, tmp->data, p, NULL, 0, 0);
2379 if ((mode == MUTT_WRITE_HEADER_NORMAL) && !privacy && C_UserAgent && !has_agent)
2381 /* Add a vanity header */
2382 fprintf(fp, "User-Agent: NeoMutt/%s%s\n", PACKAGE_VERSION, GitVer);
2385 return (ferror(fp) == 0) ? 0 : -1;
2389 * encode_headers - RFC2047-encode a list of headers
2390 * @param h String List of headers
2392 * The strings are encoded in-place.
2394 static void encode_headers(struct ListHead *h)
2400 struct ListNode *np = NULL;
2401 STAILQ_FOREACH(np, h, entries)
2403 p = strchr(np->data, ':');
2408 p = mutt_str_skip_email_wsp(p + 1);
2409 tmp = mutt_str_strdup(p);
2414 rfc2047_encode(&tmp, NULL, i + 2, C_SendCharset);
2415 mutt_mem_realloc(&np->data, i + 2 + mutt_str_strlen(tmp) + 1);
2417 sprintf(np->data + i + 2, "%s", tmp);
2424 * mutt_fqdn - Get the Fully-Qualified Domain Name
2425 * @param may_hide_host If true, hide the hostname (leaving just the domain)
2426 * @retval ptr string pointer into Hostname
2427 * @retval NULL Error, e.g no Hostname
2429 * @warning Do not free the returned pointer
2431 const char *mutt_fqdn(bool may_hide_host)
2433 if (!C_Hostname || (C_Hostname[0] == '@'))
2436 char *p = C_Hostname;
2438 if (may_hide_host && C_HiddenHost)
2440 p = strchr(C_Hostname, '.');
2444 // sanity check: don't hide the host if the fqdn is something like example.com
2445 if (!p || !strchr(p, '.'))
2453 * gen_msgid - Generate a unique Message ID
2454 * @retval ptr Message ID
2456 * @note The caller should free the string
2458 static char *gen_msgid(void)
2461 unsigned char rndid[MUTT_RANDTAG_LEN + 1];
2463 mutt_rand_base32(rndid, sizeof(rndid) - 1);
2464 rndid[MUTT_RANDTAG_LEN] = 0;
2465 const char *fqdn = mutt_fqdn(false);
2467 fqdn = NONULL(ShortHostname);
2469 struct tm tm = mutt_date_gmtime(MUTT_DATE_NOW);
2470 snprintf(buf, sizeof(buf), "<%d%02d%02d%02d%02d%02d.%s@%s>", tm.tm_year + 1900,
2471 tm.tm_mon + 1, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec, rndid, fqdn);
2472 return mutt_str_strdup(buf);
2476 * alarm_handler - Async notification of an alarm signal
2477 * @param sig Signal, (SIGALRM)
2479 static void alarm_handler(int sig)
2485 * send_msg - invoke sendmail in a subshell
2486 * @param[in] path Path to program to execute
2487 * @param[in] args Arguments to pass to program
2488 * @param[in] msg Temp file containing message to send
2489 * @param[out] tempfile If sendmail is put in the background, this points
2490 * to the temporary file containing the stdout of the
2491 * child process. If it is NULL, stderr and stdout
2492 * are not redirected.
2494 * @retval >0 Failure, return code from sendmail
2496 static int send_msg(const char *path, char **args, const char *msg, char **tempfile)
2501 mutt_sig_block_system();
2504 /* we also don't want to be stopped right now */
2505 sigaddset(&set, SIGTSTP);
2506 sigprocmask(SIG_BLOCK, &set, NULL);
2508 if ((C_SendmailWait >= 0) && tempfile)
2512 mutt_mktemp(tmp, sizeof(tmp));
2513 *tempfile = mutt_str_strdup(tmp);
2519 struct sigaction act, oldalrm;
2521 /* save parent's ID before setsid() */
2522 pid_t ppid = getppid();
2524 /* we want the delivery to continue even after the main process dies,
2525 * so we put ourselves into another session right away */
2528 /* next we close all open files */
2531 for (int fd = tempfile ? 1 : 3; fd < OPEN_MAX; fd++)
2533 #elif defined(_POSIX_OPEN_MAX)
2534 for (int fd = tempfile ? 1 : 3; fd < _POSIX_OPEN_MAX; fd++)
2544 /* now the second fork() */
2548 /* "msg" will be opened as stdin */
2549 if (open(msg, O_RDONLY, 0) < 0)
2556 if ((C_SendmailWait >= 0) && tempfile && *tempfile)
2558 /* *tempfile will be opened as stdout */
2559 if (open(*tempfile, O_WRONLY | O_APPEND | O_CREAT | O_EXCL, 0600) < 0)
2561 /* redirect stderr to *tempfile too */
2567 if (open("/dev/null", O_WRONLY | O_APPEND) < 0) /* stdout */
2569 if (open("/dev/null", O_RDWR | O_APPEND) < 0) /* stderr */
2573 /* execvpe is a glibc extension */
2574 /* execvpe (path, args, mutt_envlist_getlist()); */
2585 /* C_SendmailWait > 0: interrupt waitpid() after C_SendmailWait seconds
2586 * C_SendmailWait = 0: wait forever
2587 * C_SendmailWait < 0: don't wait */
2588 if (C_SendmailWait > 0)
2591 act.sa_handler = alarm_handler;
2593 /* need to make sure waitpid() is interrupted on SIGALRM */
2594 act.sa_flags = SA_INTERRUPT;
2598 sigemptyset(&act.sa_mask);
2599 sigaction(SIGALRM, &act, &oldalrm);
2600 alarm(C_SendmailWait);
2602 else if (C_SendmailWait < 0)
2603 _exit(0xff & EX_OK);
2605 if (waitpid(pid, &st, 0) > 0)
2607 st = WIFEXITED(st) ? WEXITSTATUS(st) : S_ERR;
2608 if (C_SendmailWait && (st == (0xff & EX_OK)) && tempfile && *tempfile)
2610 unlink(*tempfile); /* no longer needed */
2616 st = ((C_SendmailWait > 0) && (errno == EINTR) && SigAlrm) ? S_BKG : S_ERR;
2617 if ((C_SendmailWait > 0) && tempfile && *tempfile)
2624 if (C_SendmailWait > 0)
2626 /* reset alarm; not really needed, but... */
2628 sigaction(SIGALRM, &oldalrm, NULL);
2631 if ((kill(ppid, 0) == -1) && (errno == ESRCH) && tempfile && *tempfile)
2633 /* the parent is already dead */
2641 sigprocmask(SIG_UNBLOCK, &set, NULL);
2643 if ((pid != -1) && (waitpid(pid, &st, 0) > 0))
2644 st = WIFEXITED(st) ? WEXITSTATUS(st) : S_ERR; /* return child status */
2646 st = S_ERR; /* error */
2648 mutt_sig_unblock_system(true);
2654 * add_args - Add an Address to a dynamic array
2655 * @param[out] args Array to add to
2656 * @param[out] argslen Number of entries in array
2657 * @param[out] argsmax Allocated size of the array
2658 * @param[in] addr Address to add
2659 * @retval ptr Updated array
2661 static char **add_args(char **args, size_t *argslen, size_t *argsmax, struct Address *addr)
2663 for (; addr; addr = addr->next)
2665 /* weed out group mailboxes, since those are for display only */
2666 if (addr->mailbox && !addr->group)
2668 if (*argslen == *argsmax)
2669 mutt_mem_realloc(&args, (*argsmax += 5) * sizeof(char *));
2670 args[(*argslen)++] = addr->mailbox;
2677 * add_option - Add a string to a dynamic array
2678 * @param[out] args Array to add to
2679 * @param[out] argslen Number of entries in array
2680 * @param[out] argsmax Allocated size of the array
2681 * @param[in] s string to add
2682 * @retval ptr Updated array
2684 * @note The array may be realloc()'d
2686 static char **add_option(char **args, size_t *argslen, size_t *argsmax, char *s)
2688 if (*argslen == *argsmax)
2689 mutt_mem_realloc(&args, (*argsmax += 5) * sizeof(char *));
2690 args[(*argslen)++] = s;
2695 * mutt_invoke_sendmail - Run sendmail
2696 * @param from The sender
2697 * @param to Recipients
2698 * @param cc Recipients
2699 * @param bcc Recipients
2700 * @param msg File containing message
2701 * @param eightbit Message contains 8bit chars
2703 * @retval -1 Failure
2705 int mutt_invoke_sendmail(struct Address *from, struct Address *to, struct Address *cc,
2706 struct Address *bcc, const char *msg, int eightbit)
2708 char *ps = NULL, *path = NULL, *s = NULL, *childout = NULL;
2710 size_t argslen = 0, argsmax = 0;
2711 char **extra_args = NULL;
2719 mutt_expando_format(cmd, sizeof(cmd), 0, MuttIndexWindow->cols,
2720 NONULL(C_Inews), nntp_format_str, 0, 0);
2723 i = nntp_post(Context->mailbox, msg);
2728 s = mutt_str_strdup(cmd);
2732 s = mutt_str_strdup(C_Sendmail);
2734 /* ensure that $sendmail is set to avoid a crash. http://dev.mutt.org/trac/ticket/3548 */
2737 mutt_error(_("$sendmail must be set in order to send mail"));
2743 while ((ps = strtok(ps, " ")))
2745 if (argslen == argsmax)
2746 mutt_mem_realloc(&args, sizeof(char *) * (argsmax += 5));
2750 if (mutt_str_strcmp(ps, "--") == 0)
2752 args[argslen++] = ps;
2756 path = mutt_str_strdup(ps);
2757 ps = strrchr(ps, '/');
2762 args[argslen++] = ps;
2772 size_t extra_argslen = 0;
2773 /* If C_Sendmail contained a "--", we save the recipients to append to
2774 * args after other possible options added below. */
2778 size_t extra_argsmax = 0;
2779 while ((ps = strtok(ps, " ")))
2781 if (extra_argslen == extra_argsmax)
2782 mutt_mem_realloc(&extra_args, sizeof(char *) * (extra_argsmax += 5));
2784 extra_args[extra_argslen++] = ps;
2789 if (eightbit && C_Use8bitmime)
2790 args = add_option(args, &argslen, &argsmax, "-B8BITMIME");
2792 if (C_UseEnvelopeFrom)
2794 if (C_EnvelopeFromAddress)
2796 args = add_option(args, &argslen, &argsmax, "-f");
2797 args = add_args(args, &argslen, &argsmax, C_EnvelopeFromAddress);
2799 else if (from && !from->next)
2801 args = add_option(args, &argslen, &argsmax, "-f");
2802 args = add_args(args, &argslen, &argsmax, from);
2808 args = add_option(args, &argslen, &argsmax, "-N");
2809 args = add_option(args, &argslen, &argsmax, C_DsnNotify);
2813 args = add_option(args, &argslen, &argsmax, "-R");
2814 args = add_option(args, &argslen, &argsmax, C_DsnReturn);
2816 args = add_option(args, &argslen, &argsmax, "--");
2817 for (i = 0; i < extra_argslen; i++)
2818 args = add_option(args, &argslen, &argsmax, extra_args[i]);
2819 args = add_args(args, &argslen, &argsmax, to);
2820 args = add_args(args, &argslen, &argsmax, cc);
2821 args = add_args(args, &argslen, &argsmax, bcc);
2826 if (argslen == argsmax)
2827 mutt_mem_realloc(&args, sizeof(char *) * (++argsmax));
2829 args[argslen++] = NULL;
2831 /* Some user's $sendmail command uses gpg for password decryption,
2832 * and is set up to prompt using ncurses pinentry. If we
2833 * mutt_endwin() it leaves other users staring at a blank screen.
2834 * So instead, just force a hard redraw on the next refresh. */
2836 mutt_need_hard_redraw();
2838 i = send_msg(path, args, msg, OptNoCurses ? NULL : &childout);
2839 if (i != (EX_OK & 0xff))
2843 const char *e = mutt_str_sysexit(i);
2844 mutt_error(_("Error sending message, child exited %d (%s)"), i, NONULL(e));
2849 if ((stat(childout, &st) == 0) && (st.st_size > 0))
2850 mutt_do_pager(_("Output of the delivery process"), childout, 0, NULL);
2863 if (i == (EX_OK & 0xff))
2865 else if (i == S_BKG)
2873 * mutt_prepare_envelope - Prepare an email header
2874 * @param env Envelope to prepare
2875 * @param final true if this email is going to be sent (not postponed)
2877 * Encode all the headers prior to sending the email.
2879 * For postponing (!final) do the necessary encodings only
2881 void mutt_prepare_envelope(struct Envelope *env, bool final)
2885 if (env->bcc && !(env->to || env->cc))
2887 /* some MTA's will put an Apparently-To: header field showing the Bcc:
2888 * recipients if there is no To: or Cc: field, so attempt to suppress
2889 * it by using an empty To: field. */
2890 env->to = mutt_addr_new();
2892 env->to->next = mutt_addr_new();
2896 mutt_addr_cat(buf, sizeof(buf), "undisclosed-recipients", AddressSpecials);
2898 env->to->mailbox = mutt_str_strdup(buf);
2901 mutt_set_followup_to(env);
2903 if (!env->message_id)
2904 env->message_id = gen_msgid();
2907 /* Take care of 8-bit => 7-bit conversion. */
2908 rfc2047_encode_envelope(env);
2909 encode_headers(&env->userhdrs);
2913 * mutt_unprepare_envelope - Undo the encodings of mutt_prepare_envelope()
2914 * @param env Envelope to unprepare
2916 * Decode all the headers of an email, e.g. when the sending failed or was
2919 void mutt_unprepare_envelope(struct Envelope *env)
2921 struct ListNode *item = NULL;
2922 STAILQ_FOREACH(item, &env->userhdrs, entries)
2924 rfc2047_decode(&item->data);
2927 mutt_addr_free(&env->mail_followup_to);
2929 /* back conversions */
2930 rfc2047_decode_envelope(env);
2934 * bounce_message - Bounce an email message
2935 * @param fp Handle of message
2937 * @param to Address to bounce to
2938 * @param resent_from Address of new sender
2939 * @param env_from Envelope of original sender
2941 * @retval -1 Failure
2943 static int bounce_message(FILE *fp, struct Email *e, struct Address *to,
2944 const char *resent_from, struct Address *env_from)
2950 char tempfile[PATH_MAX];
2952 mutt_mktemp(tempfile, sizeof(tempfile));
2953 FILE *fp_tmp = mutt_file_fopen(tempfile, "w");
2957 CopyHeaderFlags chflags = CH_XMIT | CH_NONEWLINE | CH_NOQFROM;
2959 if (!C_BounceDelivered)
2960 chflags |= CH_WEED_DELIVERED;
2962 fseeko(fp, e->offset, SEEK_SET);
2963 fprintf(fp_tmp, "Resent-From: %s", resent_from);
2964 fprintf(fp_tmp, "\nResent-%s", mutt_date_make_date(date, sizeof(date)));
2965 char *msgid_str = gen_msgid();
2966 fprintf(fp_tmp, "Resent-Message-ID: %s\n", msgid_str);
2968 fputs("Resent-To: ", fp_tmp);
2969 mutt_write_address_list(to, fp_tmp, 11, 0);
2970 mutt_copy_header(fp, e, fp_tmp, chflags, NULL);
2971 fputc('\n', fp_tmp);
2972 mutt_file_copy_bytes(fp, fp_tmp, e->content->length);
2973 if (mutt_file_fclose(&fp_tmp) != 0)
2975 mutt_perror(tempfile);
2981 rc = mutt_smtp_send(env_from, to, NULL, NULL, tempfile, e->content->encoding == ENC_8BIT);
2984 rc = mutt_invoke_sendmail(env_from, to, NULL, NULL, tempfile,
2985 e->content->encoding == ENC_8BIT);
2992 * mutt_bounce_message - Bounce an email message
2993 * @param fp Handle of message
2995 * @param to Address to bounce to
2997 * @retval -1 Failure
2999 int mutt_bounce_message(FILE *fp, struct Email *e, struct Address *to)
3001 if (!fp || !e || !to)
3004 const char *fqdn = mutt_fqdn(true);
3005 char resent_from[256];
3008 resent_from[0] = '\0';
3009 struct Address *from = mutt_default_from();
3011 /* mutt_default_from() does not use $realname if the real name is not set
3012 * in $from, so we add it here. The reason it is not added in
3013 * mutt_default_from() is that during normal sending, we execute
3014 * send-hooks and set the realname last so that it can be changed based
3015 * upon message criteria. */
3016 if (!from->personal)
3017 from->personal = mutt_str_strdup(C_Realname);
3020 mutt_addr_qualify(from, fqdn);
3022 rfc2047_encode_addrlist(from, "Resent-From");
3023 if (mutt_addrlist_to_intl(from, &err))
3025 mutt_error(_("Bad IDN %s while preparing resent-from"), err);
3027 mutt_addr_free(&from);
3030 mutt_addr_write(resent_from, sizeof(resent_from), from, false);
3033 OptNewsSend = false;
3036 /* prepare recipient list. idna conversion appears to happen before this
3037 * function is called, since the user receives confirmation of the address
3038 * list being bounced to. */
3039 struct Address *resent_to = mutt_addr_copy_list(to, false);
3040 rfc2047_encode_addrlist(resent_to, "Resent-To");
3042 int rc = bounce_message(fp, e, resent_to, resent_from, from);
3044 mutt_addr_free(&resent_to);
3045 mutt_addr_free(&from);
3051 * set_noconv_flags - Set/reset the "x-mutt-noconv" flag
3052 * @param b Body of email
3053 * @param flag If true, set the flag, otherwise remove it
3055 static void set_noconv_flags(struct Body *b, bool flag)
3057 for (; b; b = b->next)
3059 if ((b->type == TYPE_MESSAGE) || (b->type == TYPE_MULTIPART))
3060 set_noconv_flags(b->parts, flag);
3061 else if ((b->type == TYPE_TEXT) && b->noconv)
3064 mutt_param_set(&b->parameter, "x-mutt-noconv", "yes");
3066 mutt_param_delete(&b->parameter, "x-mutt-noconv");
3072 * mutt_write_multiple_fcc - Handle FCC with multiple, comma separated entries
3073 * @param[in] path Path to mailboxes (comma separated)
3074 * @param[in] e Email
3075 * @param[in] msgid Message id
3076 * @param[in] post If true, postpone message
3077 * @param[in] fcc fcc setting to save (postpone only)
3078 * @param[out] finalpath Final path of email
3080 * @retval -1 Failure
3082 int mutt_write_multiple_fcc(const char *path, struct Email *e, const char *msgid,
3083 bool post, char *fcc, char **finalpath)
3085 char fcc_tok[PATH_MAX];
3086 char fcc_expanded[PATH_MAX];
3088 mutt_str_strfcpy(fcc_tok, path, sizeof(fcc_tok));
3090 char *tok = strtok(fcc_tok, ",");
3094 mutt_debug(LL_DEBUG1, "Fcc: initial mailbox = '%s'\n", tok);
3095 /* mutt_expand_path already called above for the first token */
3096 int status = mutt_write_fcc(tok, e, msgid, post, fcc, finalpath);
3100 while ((tok = strtok(NULL, ",")))
3105 /* Only call mutt_expand_path if tok has some data */
3106 mutt_debug(LL_DEBUG1, "Fcc: additional mailbox token = '%s'\n", tok);
3107 mutt_str_strfcpy(fcc_expanded, tok, sizeof(fcc_expanded));
3108 mutt_expand_path(fcc_expanded, sizeof(fcc_expanded));
3109 mutt_debug(LL_DEBUG1, " Additional mailbox expanded = '%s'\n", fcc_expanded);
3110 status = mutt_write_fcc(fcc_expanded, e, msgid, post, fcc, finalpath);
3119 * mutt_write_fcc - Write email to FCC mailbox
3120 * @param[in] path Path to mailbox
3121 * @param[in] e Email
3122 * @param[in] msgid Message id
3123 * @param[in] post If true, postpone message
3124 * @param[in] fcc fcc setting to save (postpone only)
3125 * @param[out] finalpath Final path of email
3127 * @retval -1 Failure
3129 int mutt_write_fcc(const char *path, struct Email *e, const char *msgid,
3130 bool post, char *fcc, char **finalpath)
3132 struct Message *msg = NULL;
3133 char tempfile[PATH_MAX];
3134 FILE *fp_tmp = NULL;
3136 bool need_mailbox_cleanup = false;
3139 MsgOpenFlags onm_flags;
3142 set_noconv_flags(e->content, true);
3144 #ifdef RECORD_FOLDER_HOOK
3145 mutt_folder_hook(path, NULL);
3147 struct Mailbox *m_fcc = mx_path_resolve(path);
3148 struct Context *ctx_fcc = mx_mbox_open(m_fcc, MUTT_APPEND | MUTT_QUIET);
3151 mutt_debug(LL_DEBUG1, "unable to open mailbox %s in append-mode, aborting\n", path);
3152 mailbox_free(&m_fcc);
3156 /* We need to add a Content-Length field to avoid problems where a line in
3157 * the message body begins with "From " */
3158 if ((ctx_fcc->mailbox->magic == MUTT_MMDF) || (ctx_fcc->mailbox->magic == MUTT_MBOX))
3160 mutt_mktemp(tempfile, sizeof(tempfile));
3161 fp_tmp = mutt_file_fopen(tempfile, "w+");
3164 mutt_perror(tempfile);
3165 mx_mbox_close(&ctx_fcc);
3168 /* remember new mail status before appending message */
3169 need_mailbox_cleanup = true;
3173 e->read = !post; /* make sure to put it in the 'cur' directory (maildir) */
3174 onm_flags = MUTT_ADD_FROM;
3176 onm_flags |= MUTT_SET_DRAFT;
3177 msg = mx_msg_open_new(ctx_fcc->mailbox, e, onm_flags);
3180 mutt_file_fclose(&fp_tmp);
3181 mx_mbox_close(&ctx_fcc);
3185 /* post == 1 => postpone message.
3186 * post == 0 => Normal mode. */
3187 mutt_rfc822_write_header(
3188 msg->fp, e->env, e->content, post ? MUTT_WRITE_HEADER_POSTPONE : MUTT_WRITE_HEADER_NORMAL,
3189 false, C_CryptProtectedHeadersRead && mutt_should_hide_protected_subject(e));
3191 /* (postponement) if this was a reply of some sort, <msgid> contains the
3192 * Message-ID: of message replied to. Save it using a special X-Mutt-
3193 * header so it can be picked up if the message is recalled at a later
3194 * point in time. This will allow the message to be marked as replied if
3195 * the same mailbox is still open. */
3197 fprintf(msg->fp, "X-Mutt-References: %s\n", msgid);
3199 /* (postponement) save the Fcc: using a special X-Mutt- header so that
3200 * it can be picked up when the message is recalled */
3202 fprintf(msg->fp, "X-Mutt-Fcc: %s\n", fcc);
3204 if ((ctx_fcc->mailbox->magic == MUTT_MMDF) || (ctx_fcc->mailbox->magic == MUTT_MBOX))
3205 fprintf(msg->fp, "Status: RO\n");
3207 /* mutt_rfc822_write_header() only writes out a Date: header with
3208 * mode == 0, i.e. _not_ postponement; so write out one ourself */
3210 fprintf(msg->fp, "%s", mutt_date_make_date(buf, sizeof(buf)));
3212 /* (postponement) if the mail is to be signed or encrypted, save this info */
3213 if (((WithCrypto & APPLICATION_PGP) != 0) && post && (e->security & APPLICATION_PGP))
3215 fputs("X-Mutt-PGP: ", msg->fp);
3216 if (e->security & SEC_ENCRYPT)
3217 fputc('E', msg->fp);
3218 if (e->security & SEC_OPPENCRYPT)
3219 fputc('O', msg->fp);
3220 if (e->security & SEC_SIGN)
3222 fputc('S', msg->fp);
3223 if (C_PgpSignAs && *C_PgpSignAs)
3224 fprintf(msg->fp, "<%s>", C_PgpSignAs);
3226 if (e->security & SEC_INLINE)
3227 fputc('I', msg->fp);
3228 fputc('\n', msg->fp);
3231 /* (postponement) if the mail is to be signed or encrypted, save this info */
3232 if (((WithCrypto & APPLICATION_SMIME) != 0) && post && (e->security & APPLICATION_SMIME))
3234 fputs("X-Mutt-SMIME: ", msg->fp);
3235 if (e->security & SEC_ENCRYPT)
3237 fputc('E', msg->fp);
3238 if (C_SmimeEncryptWith && *C_SmimeEncryptWith)
3239 fprintf(msg->fp, "C<%s>", C_SmimeEncryptWith);
3241 if (e->security & SEC_OPPENCRYPT)
3242 fputc('O', msg->fp);
3243 if (e->security & SEC_SIGN)
3245 fputc('S', msg->fp);
3246 if (C_SmimeSignAs && *C_SmimeSignAs)
3247 fprintf(msg->fp, "<%s>", C_SmimeSignAs);
3249 if (e->security & SEC_INLINE)
3250 fputc('I', msg->fp);
3251 fputc('\n', msg->fp);
3255 /* (postponement) if the mail is to be sent through a mixmaster
3256 * chain, save that information */
3258 if (post && !STAILQ_EMPTY(&e->chain))
3260 fputs("X-Mutt-Mix:", msg->fp);
3261 struct ListNode *p = NULL;
3262 STAILQ_FOREACH(p, &e->chain, entries)
3264 fprintf(msg->fp, " %s", (char *) p->data);
3267 fputc('\n', msg->fp);
3276 mutt_write_mime_body(e->content, fp_tmp);
3278 /* make sure the last line ends with a newline. Emacs doesn't ensure this
3279 * will happen, and it can cause problems parsing the mailbox later. */
3280 fseek(fp_tmp, -1, SEEK_END);
3281 if (fgetc(fp_tmp) != '\n')
3283 fseek(fp_tmp, 0, SEEK_END);
3284 fputc('\n', fp_tmp);
3290 mutt_debug(LL_DEBUG1, "%s: write failed\n", tempfile);
3291 mutt_file_fclose(&fp_tmp);
3293 mx_msg_commit(ctx_fcc->mailbox, msg); /* XXX really? */
3294 mx_msg_close(ctx_fcc->mailbox, &msg);
3295 mx_mbox_close(&ctx_fcc);
3299 /* count the number of lines */
3301 while (fgets(sasha, sizeof(sasha), fp_tmp))
3303 fprintf(msg->fp, "Content-Length: " OFF_T_FMT "\n", (LOFF_T) ftello(fp_tmp));
3304 fprintf(msg->fp, "Lines: %d\n\n", lines);
3306 /* copy the body and clean up */
3308 rc = mutt_file_copy_stream(fp_tmp, msg->fp);
3309 if (fclose(fp_tmp) != 0)
3311 /* if there was an error, leave the temp version */
3317 fputc('\n', msg->fp); /* finish off the header */
3318 rc = mutt_write_mime_body(e->content, msg->fp);
3321 if (mx_msg_commit(ctx_fcc->mailbox, msg) != 0)
3324 *finalpath = mutt_str_strdup(msg->committed_path);
3325 mx_msg_close(ctx_fcc->mailbox, &msg);
3326 mx_mbox_close(&ctx_fcc);
3328 if (!post && need_mailbox_cleanup)
3329 mutt_mailbox_cleanup(path, &st);
3332 set_noconv_flags(e->content, false);
3335 #ifdef RECORD_FOLDER_HOOK
3336 /* We ran a folder hook for the destination mailbox,
3337 * now we run it for the user's current mailbox */
3338 if (Context && Context->mailbox->path)
3339 mutt_folder_hook(Context->mailbox->path, Context->mailbox->desc);