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)
376 tmp = mutt_str_strdup(np->value);
377 const int encode = rfc2231_encode_string(&tmp);
378 mutt_addr_cat(buf, sizeof(buf), tmp, MimeSpecials);
380 /* Dirty hack to make messages readable by Outlook Express for the Mac:
381 * force quotes around the boundary parameter even when they aren't
384 if ((mutt_str_strcasecmp(np->attribute, "boundary") == 0) && (strcmp(buf, tmp) == 0))
386 snprintf(buf, sizeof(buf), "\"%s\"", tmp);
391 const int tmplen = mutt_str_strlen(buf) + mutt_str_strlen(np->attribute) + 1;
393 if (len + tmplen + 2 > 76)
404 fprintf(fp, "%s%s=%s", np->attribute, encode ? "*" : "", buf);
411 fprintf(fp, "Content-Language: %s\n", a->language);
414 fprintf(fp, "Content-Description: %s\n", a->description);
416 if (a->disposition != DISP_NONE)
418 const char *dispstr[] = { "inline", "attachment", "form-data" };
420 if (a->disposition < sizeof(dispstr) / sizeof(char *))
422 fprintf(fp, "Content-Disposition: %s", dispstr[a->disposition]);
424 if (a->use_disp && (a->disposition != DISP_INLINE))
426 char *fn = a->d_filename;
434 /* Strip off the leading path... */
435 char *t = strrchr(fn, '/');
443 tmp = mutt_str_strdup(t);
444 const int encode = rfc2231_encode_string(&tmp);
445 mutt_addr_cat(buf, sizeof(buf), tmp, MimeSpecials);
447 fprintf(fp, "; filename%s=%s", encode ? "*" : "", buf);
455 mutt_debug(LL_DEBUG1, "ERROR: invalid content-disposition %d\n", a->disposition);
459 if (a->encoding != ENC_7BIT)
460 fprintf(fp, "Content-Transfer-Encoding: %s\n", ENCODING(a->encoding));
462 if (C_CryptProtectedHeadersWrite && a->mime_headers)
463 mutt_rfc822_write_header(fp, a->mime_headers, NULL, MUTT_WRITE_HEADER_MIME, false, false);
465 /* Do NOT add the terminator here!!! */
466 return ferror(fp) ? -1 : 0;
470 * write_as_text_part - Should the Body be written as a text MIME part
471 * @param b Email to examine
472 * @retval true If the Body should be written as text
474 static bool write_as_text_part(struct Body *b)
476 return mutt_is_text_part(b) ||
477 (((WithCrypto & APPLICATION_PGP) != 0) && mutt_is_application_pgp(b));
481 * mutt_write_mime_body - Write a MIME part
482 * @param a Body to use
483 * @param fp File to write to
487 int mutt_write_mime_body(struct Body *a, FILE *fp)
490 struct FgetConv *fc = NULL;
492 if (a->type == TYPE_MULTIPART)
494 /* First, find the boundary to use */
495 const char *p = mutt_param_get(&a->parameter, "boundary");
498 mutt_debug(LL_DEBUG1, "no boundary parameter found\n");
499 mutt_error(_("No boundary parameter found [report this error]"));
503 mutt_str_strfcpy(boundary, p, sizeof(boundary));
505 for (struct Body *t = a->parts; t; t = t->next)
507 fprintf(fp, "\n--%s\n", boundary);
508 if (mutt_write_mime_header(t, fp) == -1)
511 if (mutt_write_mime_body(t, fp) == -1)
514 fprintf(fp, "\n--%s--\n", boundary);
515 return ferror(fp) ? -1 : 0;
518 /* This is pretty gross, but it's the best solution for now... */
519 if (((WithCrypto & APPLICATION_PGP) != 0) && (a->type == TYPE_APPLICATION) &&
520 (mutt_str_strcmp(a->subtype, "pgp-encrypted") == 0))
522 fputs("Version: 1\n", fp);
526 fp_in = fopen(a->filename, "r");
529 mutt_debug(LL_DEBUG1, "%s no longer exists\n", a->filename);
530 mutt_error(_("%s no longer exists"), a->filename);
534 if ((a->type == TYPE_TEXT) && (!a->noconv))
536 char send_charset[128];
537 fc = mutt_ch_fgetconv_open(
539 mutt_body_get_charset(a, send_charset, sizeof(send_charset)), 0);
542 fc = mutt_ch_fgetconv_open(fp_in, 0, 0, 0);
544 mutt_sig_allow_interrupt(1);
545 if (a->encoding == ENC_QUOTED_PRINTABLE)
546 encode_quoted(fc, fp, write_as_text_part(a));
547 else if (a->encoding == ENC_BASE64)
548 encode_base64(fc, fp, write_as_text_part(a));
549 else if ((a->type == TYPE_TEXT) && (!a->noconv))
552 mutt_file_copy_stream(fp_in, fp);
553 mutt_sig_allow_interrupt(0);
555 mutt_ch_fgetconv_close(&fc);
556 mutt_file_fclose(&fp_in);
563 return ferror(fp) ? -1 : 0;
567 * mutt_generate_boundary - Create a unique boundary id for a MIME part
568 * @param parm MIME part
570 void mutt_generate_boundary(struct ParameterList *parm)
572 char rs[MUTT_RANDTAG_LEN + 1];
574 mutt_rand_base32(rs, sizeof(rs) - 1);
575 rs[MUTT_RANDTAG_LEN] = 0;
576 mutt_param_set(parm, "boundary", rs);
580 * struct ContentState - Info about the body of an email
592 * update_content_info - Cache some info about an email
593 * @param info Info about an Attachment
594 * @param s Info about the Body of an email
595 * @param buf Buffer for the result
596 * @param buflen Length of the buffer
598 static void update_content_info(struct Content *info, struct ContentState *s,
599 char *buf, size_t buflen)
602 int whitespace = s->whitespace;
604 int linelen = s->linelen;
605 bool was_cr = s->was_cr;
607 if (!buf) /* This signals EOF */
611 if (linelen > info->linemax)
612 info->linemax = linelen;
617 for (; buflen; buf++, buflen--)
634 if (linelen > info->linemax)
635 info->linemax = linelen;
651 if (linelen > info->linemax)
652 info->linemax = linelen;
666 else if ((ch == '\t') || (ch == '\f'))
676 else if ((ch < 32) || (ch == 127))
682 if ((ch == 'F') || (ch == 'f'))
693 if ((linelen == 2) && (ch != 'r'))
695 else if ((linelen == 3) && (ch != 'o'))
697 else if (linelen == 4)
711 if ((ch != ' ') && (ch != '\t'))
716 s->whitespace = whitespace;
718 s->linelen = linelen;
723 * convert_file_to - Change the encoding of a file
724 * @param[in] fp File to convert
725 * @param[in] fromcode Original encoding
726 * @param[in] ncodes Number of target encodings
727 * @param[in] tocodes List of target encodings
728 * @param[out] tocode Chosen encoding
729 * @param[in] info Encoding information
730 * @retval -1 Error, no conversion was possible
731 * @retval >0 Success, number of bytes converted
733 * Find the best charset conversion of the file from fromcode into one
734 * of the tocodes. If successful, set *tocode and Content *info and
735 * return the number of characters converted inexactly.
737 * We convert via UTF-8 in order to avoid the condition -1(EINVAL),
738 * which would otherwise prevent us from knowing the number of inexact
739 * conversions. Where the candidate target charset is UTF-8 we avoid
740 * doing the second conversion because iconv_open("UTF-8", "UTF-8")
741 * fails with some libraries.
743 * We assume that the output from iconv is never more than 4 times as
744 * long as the input for any pair of charsets we might be interested
747 static size_t convert_file_to(FILE *fp, const char *fromcode, int ncodes,
748 const char **tocodes, int *tocode, struct Content *info)
750 char bufi[256], bufu[512], bufo[4 * sizeof(bufi)];
753 const iconv_t cd1 = mutt_ch_iconv_open("utf-8", fromcode, 0);
754 if (cd1 == (iconv_t)(-1))
757 iconv_t *cd = mutt_mem_calloc(ncodes, sizeof(iconv_t));
758 size_t *score = mutt_mem_calloc(ncodes, sizeof(size_t));
759 struct ContentState *states = mutt_mem_calloc(ncodes, sizeof(struct ContentState));
760 struct Content *infos = mutt_mem_calloc(ncodes, sizeof(struct Content));
762 for (int i = 0; i < ncodes; i++)
764 if (mutt_str_strcasecmp(tocodes[i], "utf-8") != 0)
765 cd[i] = mutt_ch_iconv_open(tocodes[i], "utf-8", 0);
768 /* Special case for conversion to UTF-8 */
769 cd[i] = (iconv_t)(-1);
770 score[i] = (size_t)(-1);
778 /* Try to fill input buffer */
779 size_t n = fread(bufi + ibl, 1, sizeof(bufi) - ibl, fp);
782 /* Convert to UTF-8 */
783 const char *ib = bufi;
785 size_t obl = sizeof(bufu);
786 n = iconv(cd1, (ICONV_CONST char **) (ibl ? &ib : 0), &ibl, &ob, &obl);
787 /* assert(n == (size_t)(-1) || !n); */
788 if ((n == (size_t)(-1)) && (((errno != EINVAL) && (errno != E2BIG)) || (ib == bufi)))
790 /* assert(errno == EILSEQ || (errno == EINVAL && ib == bufi && ibl < sizeof(bufi))); */
794 const size_t ubl1 = ob - bufu;
796 /* Convert from UTF-8 */
797 for (int i = 0; i < ncodes; i++)
799 if ((cd[i] != (iconv_t)(-1)) && (score[i] != (size_t)(-1)))
801 const char *ub = bufu;
805 n = iconv(cd[i], (ICONV_CONST char **) ((ibl || ubl) ? &ub : 0), &ubl, &ob, &obl);
806 if (n == (size_t)(-1))
808 /* assert(errno == E2BIG || (BUGGY_ICONV && (errno == EILSEQ || errno == ENOENT))); */
809 score[i] = (size_t)(-1);
814 update_content_info(&infos[i], &states[i], bufo, ob - bufo);
817 else if ((cd[i] == (iconv_t)(-1)) && (score[i] == (size_t)(-1)))
819 /* Special case for conversion to UTF-8 */
820 update_content_info(&infos[i], &states[i], bufu, ubl1);
826 /* Save unused input */
827 memmove(bufi, ib, ibl);
829 else if (!ubl1 && (ib < bufi + sizeof(bufi)))
838 /* Find best score */
840 for (int i = 0; i < ncodes; i++)
842 if ((cd[i] == (iconv_t)(-1)) && (score[i] == (size_t)(-1)))
844 /* Special case for conversion to UTF-8 */
849 else if ((cd[i] == (iconv_t)(-1)) || (score[i] == (size_t)(-1)))
851 else if ((ret == (size_t)(-1)) || (score[i] < ret))
859 if (ret != (size_t)(-1))
861 memcpy(info, &infos[*tocode], sizeof(struct Content));
862 update_content_info(info, &states[*tocode], 0, 0); /* EOF */
866 for (int i = 0; i < ncodes; i++)
867 if (cd[i] != (iconv_t)(-1))
880 * convert_file_from_to - Convert a file between encodings
881 * @param[in] fp File to read from
882 * @param[in] fromcodes Charsets to try converting FROM
883 * @param[in] tocodes Charsets to try converting TO
884 * @param[out] fromcode From charset selected
885 * @param[out] tocode To charset selected
886 * @param[out] info Info about the file
887 * @retval num Characters converted
888 * @retval -1 Error (as a size_t)
890 * Find the first of the fromcodes that gives a valid conversion and the best
891 * charset conversion of the file into one of the tocodes. If successful, set
892 * *fromcode and *tocode to dynamically allocated strings, set Content *info,
893 * and return the number of characters converted inexactly. If no conversion
894 * was possible, return -1.
896 * Both fromcodes and tocodes may be colon-separated lists of charsets.
897 * However, if fromcode is zero then fromcodes is assumed to be the name of a
898 * single charset even if it contains a colon.
900 static size_t convert_file_from_to(FILE *fp, const char *fromcodes, const char *tocodes,
901 char **fromcode, char **tocode, struct Content *info)
905 const char *c = NULL, *c1 = NULL;
909 /* Count the tocodes */
911 for (c = tocodes; c; c = c1 ? c1 + 1 : 0)
920 tcode = mutt_mem_malloc(ncodes * sizeof(char *));
921 for (c = tocodes, i = 0; c; c = c1 ? c1 + 1 : 0, i++)
926 tcode[i] = mutt_str_substr_dup(c, c1);
932 /* Try each fromcode in turn */
933 for (c = fromcodes; c; c = c1 ? c1 + 1 : 0)
938 fcode = mutt_str_substr_dup(c, c1);
940 ret = convert_file_to(fp, fcode, ncodes, (const char **) tcode, &cn, info);
941 if (ret != (size_t)(-1))
953 /* There is only one fromcode */
954 ret = convert_file_to(fp, fromcodes, ncodes, (const char **) tcode, &cn, info);
955 if (ret != (size_t)(-1))
963 for (i = 0; i < ncodes; i++)
972 * mutt_get_content_info - Analyze file to determine MIME encoding to use
973 * @param fname File to examine
974 * @param b Body to update
975 * @retval ptr Newly allocated Content
977 * Also set the body charset, sometimes, or not.
979 struct Content *mutt_get_content_info(const char *fname, struct Body *b)
981 struct Content *info = NULL;
982 struct ContentState state = { 0 };
984 char *fromcode = NULL;
994 if (stat(fname, &sb) == -1)
996 mutt_error(_("Can't stat %s: %s"), fname, strerror(errno));
1000 if (!S_ISREG(sb.st_mode))
1002 mutt_error(_("%s isn't a regular file"), fname);
1006 fp = fopen(fname, "r");
1009 mutt_debug(LL_DEBUG1, "%s: %s (errno %d).\n", fname, strerror(errno), errno);
1013 info = mutt_mem_calloc(1, sizeof(struct Content));
1015 if (b && (b->type == TYPE_TEXT) && (!b->noconv && !b->force_charset))
1017 char *chs = mutt_param_get(&b->parameter, "charset");
1018 char *fchs = b->use_disp ?
1019 ((C_AttachCharset && *C_AttachCharset) ? C_AttachCharset : C_Charset) :
1021 if (C_Charset && (chs || C_SendCharset) &&
1022 (convert_file_from_to(fp, fchs, chs ? chs : C_SendCharset, &fromcode,
1023 &tocode, info) != (size_t)(-1)))
1028 mutt_ch_canonical_charset(chsbuf, sizeof(chsbuf), tocode);
1029 mutt_param_set(&b->parameter, "charset", chsbuf);
1032 b->charset = fromcode;
1034 mutt_file_fclose(&fp);
1040 while ((r = fread(buf, 1, sizeof(buf), fp)))
1041 update_content_info(info, &state, buf, r);
1042 update_content_info(info, &state, 0, 0);
1044 mutt_file_fclose(&fp);
1046 if (b && (b->type == TYPE_TEXT) && (!b->noconv && !b->force_charset))
1048 mutt_param_set(&b->parameter, "charset",
1051 C_Charset && !mutt_ch_is_us_ascii(C_Charset) ? C_Charset : "unknown-8bit"));
1058 * mutt_lookup_mime_type - Find the MIME type for an attachment
1059 * @param att Email with attachment
1060 * @param path Path to attachment
1061 * @retval num MIME type, e.g. #TYPE_IMAGE
1063 * Given a file at 'path', see if there is a registered MIME type.
1064 * Returns the major MIME type, and copies the subtype to "d". First look
1065 * in a system mime.types if we can find one, then look for ~/.mime.types.
1066 * The longest match is used so that we can match 'ps.gz' when 'gz' also
1069 int mutt_lookup_mime_type(struct Body *att, const char *path)
1072 char *p = NULL, *q = NULL, *ct = NULL;
1074 char subtype[256], xtype[256];
1075 int szf, sze, cur_sze;
1077 bool found_mimetypes = false;
1084 szf = mutt_str_strlen(path);
1086 for (int count = 0; count < 4; count++)
1088 /* can't use strtok() because we use it in an inner loop below, so use
1089 * a switch statement here instead. */
1092 /* last file with last entry to match wins type/xtype */
1094 /* check default unix mimetypes location first */
1095 mutt_str_strfcpy(buf, "/etc/mime.types", sizeof(buf));
1098 mutt_str_strfcpy(buf, SYSCONFDIR "/mime.types", sizeof(buf));
1101 mutt_str_strfcpy(buf, PKGDATADIR "/mime.types", sizeof(buf));
1104 snprintf(buf, sizeof(buf), "%s/.mime.types", NONULL(HomeDir));
1107 mutt_debug(LL_DEBUG1, "Internal error, count = %d.\n", count);
1108 goto bye; /* shouldn't happen */
1111 fp = fopen(buf, "r");
1114 found_mimetypes = true;
1116 while (fgets(buf, sizeof(buf) - 1, fp))
1118 /* weed out any comments */
1119 p = strchr(buf, '#');
1123 /* remove any leading space. */
1127 /* position on the next field in this line */
1128 p = strpbrk(ct, " \t");
1134 /* cycle through the file extensions */
1135 while ((p = strtok(p, " \t\n")))
1137 sze = mutt_str_strlen(p);
1138 if ((sze > cur_sze) && (szf >= sze) &&
1139 ((mutt_str_strcasecmp(path + szf - sze, p) == 0) ||
1140 (mutt_str_strcasecmp(path + szf - sze, p) == 0)) &&
1141 ((szf == sze) || (path[szf - sze - 1] == '.')))
1143 /* get the content-type */
1145 p = strchr(ct, '/');
1148 /* malformed line, just skip it. */
1153 for (q = p; *q && !ISSPACE(*q); q++)
1156 mutt_str_substr_cpy(subtype, p, q, sizeof(subtype));
1158 type = mutt_check_mime_type(ct);
1159 if (type == TYPE_OTHER)
1160 mutt_str_strfcpy(xtype, ct, sizeof(xtype));
1167 mutt_file_fclose(&fp);
1173 /* no mime.types file found */
1174 if (!found_mimetypes)
1176 mutt_error(_("Could not find any mime.types file."));
1179 if ((type != TYPE_OTHER) || (*xtype != '\0'))
1182 mutt_str_replace(&att->subtype, subtype);
1183 mutt_str_replace(&att->xtype, xtype);
1190 * transform_to_7bit - Convert MIME parts to 7-bit
1191 * @param a Body of the email
1192 * @param fp_in File to read
1194 static void transform_to_7bit(struct Body *a, FILE *fp_in)
1197 struct State s = { 0 };
1200 for (; a; a = a->next)
1202 if (a->type == TYPE_MULTIPART)
1204 if (a->encoding != ENC_7BIT)
1205 a->encoding = ENC_7BIT;
1207 transform_to_7bit(a->parts, fp_in);
1209 else if (mutt_is_message_type(a->type, a->subtype))
1211 mutt_message_to_7bit(a, fp_in);
1216 a->force_charset = true;
1218 mutt_mktemp(buf, sizeof(buf));
1219 s.fp_out = mutt_file_fopen(buf, "w");
1222 mutt_perror("fopen");
1226 mutt_decode_attachment(a, &s);
1227 mutt_file_fclose(&s.fp_out);
1228 FREE(&a->d_filename);
1229 a->d_filename = a->filename;
1230 a->filename = mutt_str_strdup(buf);
1232 if (stat(a->filename, &sb) == -1)
1234 mutt_perror("stat");
1237 a->length = sb.st_size;
1239 mutt_update_encoding(a);
1240 if (a->encoding == ENC_8BIT)
1241 a->encoding = ENC_QUOTED_PRINTABLE;
1242 else if (a->encoding == ENC_BINARY)
1243 a->encoding = ENC_BASE64;
1249 * mutt_message_to_7bit - Convert an email's MIME parts to 7-bit
1250 * @param a Body of the email
1251 * @param fp File to read (OPTIONAL)
1253 void mutt_message_to_7bit(struct Body *a, FILE *fp)
1255 char temp[PATH_MAX];
1258 FILE *fp_out = NULL;
1261 if (!a->filename && fp)
1263 else if (!a->filename || !(fp_in = fopen(a->filename, "r")))
1265 mutt_error(_("Could not open %s"), a->filename ? a->filename : "(null)");
1271 if (stat(a->filename, &sb) == -1)
1273 mutt_perror("stat");
1274 mutt_file_fclose(&fp_in);
1276 a->length = sb.st_size;
1279 mutt_mktemp(temp, sizeof(temp));
1280 fp_out = mutt_file_fopen(temp, "w+");
1283 mutt_perror("fopen");
1290 fseeko(fp_in, a->offset, SEEK_SET);
1291 a->parts = mutt_rfc822_parse_message(fp_in, a);
1293 transform_to_7bit(a->parts, fp_in);
1295 mutt_copy_hdr(fp_in, fp_out, a->offset, a->offset + a->length,
1296 CH_MIME | CH_NONEWLINE | CH_XMIT, NULL);
1298 fputs("MIME-Version: 1.0\n", fp_out);
1299 mutt_write_mime_header(a->parts, fp_out);
1300 fputc('\n', fp_out);
1301 mutt_write_mime_body(a->parts, fp_out);
1306 if (fp_in && (fp_in != fp))
1307 mutt_file_fclose(&fp_in);
1309 mutt_file_fclose(&fp_out);
1313 a->encoding = ENC_7BIT;
1314 FREE(&a->d_filename);
1315 a->d_filename = a->filename;
1316 if (a->filename && a->unlink)
1317 unlink(a->filename);
1318 a->filename = mutt_str_strdup(temp);
1320 if (stat(a->filename, &sb) == -1)
1322 mutt_perror("stat");
1325 a->length = sb.st_size;
1326 mutt_body_free(&a->parts);
1327 a->email->content = NULL;
1331 * set_encoding - determine which Content-Transfer-Encoding to use
1332 * @param[in] b Body of email
1333 * @param[out] info Info about the email
1335 static void set_encoding(struct Body *b, struct Content *info)
1337 if (b->type == TYPE_TEXT)
1339 char send_charset[128];
1340 char *chsname = mutt_body_get_charset(b, send_charset, sizeof(send_charset));
1341 if ((info->lobin && !mutt_str_startswith(chsname, "iso-2022", CASE_IGNORE)) ||
1342 (info->linemax > 990) || (info->from && C_EncodeFrom))
1344 b->encoding = ENC_QUOTED_PRINTABLE;
1346 else if (info->hibin)
1348 b->encoding = C_Allow8bit ? ENC_8BIT : ENC_QUOTED_PRINTABLE;
1352 b->encoding = ENC_7BIT;
1355 else if ((b->type == TYPE_MESSAGE) || (b->type == TYPE_MULTIPART))
1357 if (info->lobin || info->hibin)
1359 if (C_Allow8bit && !info->lobin)
1360 b->encoding = ENC_8BIT;
1362 mutt_message_to_7bit(b, NULL);
1365 b->encoding = ENC_7BIT;
1367 else if ((b->type == TYPE_APPLICATION) &&
1368 (mutt_str_strcasecmp(b->subtype, "pgp-keys") == 0))
1370 b->encoding = ENC_7BIT;
1374 /* Determine which encoding is smaller */
1375 if (1.33 * (float) (info->lobin + info->hibin + info->ascii) <
1376 3.0 * (float) (info->lobin + info->hibin) + (float) info->ascii)
1378 b->encoding = ENC_BASE64;
1382 b->encoding = ENC_QUOTED_PRINTABLE;
1388 * mutt_stamp_attachment - Timestamp an Attachment
1389 * @param a Attachment
1391 void mutt_stamp_attachment(struct Body *a)
1393 a->stamp = time(NULL);
1397 * mutt_body_get_charset - Get a body's character set
1398 * @param b Body to examine
1399 * @param buf Buffer for the result
1400 * @param buflen Length of the buffer
1401 * @retval ptr Buffer containing character set
1402 * @retval NULL On error, or if not a text type
1404 char *mutt_body_get_charset(struct Body *b, char *buf, size_t buflen)
1408 if (b && (b->type != TYPE_TEXT))
1412 p = mutt_param_get(&b->parameter, "charset");
1415 mutt_ch_canonical_charset(buf, buflen, p);
1417 mutt_str_strfcpy(buf, "us-ascii", buflen);
1423 * mutt_update_encoding - Update the encoding type
1424 * @param a Body to update
1426 * Assumes called from send mode where Body->filename points to actual file
1428 void mutt_update_encoding(struct Body *a)
1430 struct Content *info = NULL;
1433 /* override noconv when it's us-ascii */
1434 if (mutt_ch_is_us_ascii(mutt_body_get_charset(a, chsbuf, sizeof(chsbuf))))
1437 if (!a->force_charset && !a->noconv)
1438 mutt_param_delete(&a->parameter, "charset");
1440 info = mutt_get_content_info(a->filename, a);
1444 set_encoding(a, info);
1445 mutt_stamp_attachment(a);
1452 * mutt_make_message_attach - Create a message attachment
1455 * @param attach_msg true if attaching a message
1456 * @retval ptr Newly allocated Body
1457 * @retval NULL Error
1459 struct Body *mutt_make_message_attach(struct Mailbox *m, struct Email *e, bool attach_msg)
1462 struct Body *body = NULL;
1464 CopyMessageFlags cmflags;
1465 SecurityFlags pgp = WithCrypto ? e->security : SEC_NO_FLAGS;
1469 if ((C_MimeForwardDecode || C_ForwardDecrypt) && (e->security & SEC_ENCRYPT))
1471 if (!crypt_valid_passphrase(e->security))
1476 mutt_mktemp(buf, sizeof(buf));
1477 fp = mutt_file_fopen(buf, "w+");
1481 body = mutt_body_new();
1482 body->type = TYPE_MESSAGE;
1483 body->subtype = mutt_str_strdup("rfc822");
1484 body->filename = mutt_str_strdup(buf);
1485 body->unlink = true;
1486 body->use_disp = false;
1487 body->disposition = DISP_INLINE;
1488 body->noconv = true;
1490 mutt_parse_mime_message(m, e);
1492 CopyHeaderFlags chflags = CH_XMIT;
1493 cmflags = MUTT_CM_NO_FLAGS;
1495 /* If we are attaching a message, ignore C_MimeForwardDecode */
1496 if (!attach_msg && C_MimeForwardDecode)
1498 chflags |= CH_MIME | CH_TXTPLAIN;
1499 cmflags = MUTT_CM_DECODE | MUTT_CM_CHARCONV;
1500 if (WithCrypto & APPLICATION_PGP)
1501 pgp &= ~PGP_ENCRYPT;
1502 if (WithCrypto & APPLICATION_SMIME)
1503 pgp &= ~SMIME_ENCRYPT;
1505 else if ((WithCrypto != 0) && C_ForwardDecrypt && (e->security & SEC_ENCRYPT))
1507 if (((WithCrypto & APPLICATION_PGP) != 0) && mutt_is_multipart_encrypted(e->content))
1509 chflags |= CH_MIME | CH_NONEWLINE;
1510 cmflags = MUTT_CM_DECODE_PGP;
1511 pgp &= ~PGP_ENCRYPT;
1513 else if (((WithCrypto & APPLICATION_PGP) != 0) &&
1514 ((mutt_is_application_pgp(e->content) & PGP_ENCRYPT) == PGP_ENCRYPT))
1516 chflags |= CH_MIME | CH_TXTPLAIN;
1517 cmflags = MUTT_CM_DECODE | MUTT_CM_CHARCONV;
1518 pgp &= ~PGP_ENCRYPT;
1520 else if (((WithCrypto & APPLICATION_SMIME) != 0) &&
1521 ((mutt_is_application_smime(e->content) & SMIME_ENCRYPT) == SMIME_ENCRYPT))
1523 chflags |= CH_MIME | CH_TXTPLAIN;
1524 cmflags = MUTT_CM_DECODE | MUTT_CM_CHARCONV;
1525 pgp &= ~SMIME_ENCRYPT;
1529 mutt_copy_message_ctx(fp, m, e, cmflags, chflags);
1534 body->email = mutt_email_new();
1535 body->email->offset = 0;
1536 /* we don't need the user headers here */
1537 body->email->env = mutt_rfc822_read_header(fp, body->email, false, false);
1539 body->email->security = pgp;
1540 mutt_update_encoding(body);
1541 body->parts = body->email->content;
1543 mutt_file_fclose(&fp);
1549 * run_mime_type_query - Run an external command to determine the MIME type
1550 * @param att Attachment
1552 * The command in $mime_type_query_command is run.
1554 static void run_mime_type_query(struct Body *att)
1557 char cmd[STR_COMMAND];
1563 mutt_file_expand_fmt_quote(cmd, sizeof(cmd), C_MimeTypeQueryCommand, att->filename);
1565 pid = mutt_create_filter(cmd, NULL, &fp, &fp_err);
1568 mutt_error(_("Error running \"%s\""), cmd);
1572 buf = mutt_file_read_line(buf, &buflen, fp, &dummy, 0);
1575 if (strchr(buf, '/'))
1576 mutt_parse_content_type(buf, att);
1580 mutt_file_fclose(&fp);
1581 mutt_file_fclose(&fp_err);
1582 mutt_wait_filter(pid);
1586 * mutt_make_file_attach - Create a file attachment
1587 * @param path File to attach
1588 * @retval ptr Newly allocated Body
1589 * @retval NULL Error
1591 struct Body *mutt_make_file_attach(const char *path)
1593 struct Body *att = mutt_body_new();
1594 att->filename = mutt_str_strdup(path);
1596 if (C_MimeTypeQueryCommand && *C_MimeTypeQueryCommand && C_MimeTypeQueryFirst)
1597 run_mime_type_query(att);
1599 /* Attempt to determine the appropriate content-type based on the filename
1602 mutt_lookup_mime_type(att, path);
1604 if (!att->subtype && C_MimeTypeQueryCommand && *C_MimeTypeQueryCommand && !C_MimeTypeQueryFirst)
1606 run_mime_type_query(att);
1609 struct Content *info = mutt_get_content_info(path, att);
1612 mutt_body_free(&att);
1618 if ((info->nulbin == 0) &&
1619 ((info->lobin == 0) || ((info->lobin + info->hibin + info->ascii) / info->lobin >= 10)))
1621 /* Statistically speaking, there should be more than 10% "lobin"
1622 * chars if this is really a binary file... */
1623 att->type = TYPE_TEXT;
1624 att->subtype = mutt_str_strdup("plain");
1628 att->type = TYPE_APPLICATION;
1629 att->subtype = mutt_str_strdup("octet-stream");
1634 mutt_update_encoding(att);
1639 * get_toplevel_encoding - Find the most restrictive encoding type
1640 * @param a Body to examine
1641 * @retval num Encoding type, e.g. #ENC_7BIT
1643 static int get_toplevel_encoding(struct Body *a)
1647 for (; a; a = a->next)
1649 if (a->encoding == ENC_BINARY)
1651 else if (a->encoding == ENC_8BIT)
1659 * check_boundary - check for duplicate boundary
1660 * @param boundary Boundary to look for
1661 * @param b Body parts to check
1662 * @retval true if duplicate found
1664 static bool check_boundary(const char *boundary, struct Body *b)
1668 if (b->parts && check_boundary(boundary, b->parts))
1671 if (b->next && check_boundary(boundary, b->next))
1674 p = mutt_param_get(&b->parameter, "boundary");
1675 if (p && (mutt_str_strcmp(p, boundary) == 0))
1683 * mutt_make_multipart - Create a multipart email
1684 * @param b Body of email to start
1685 * @retval ptr Newly allocated Body
1687 struct Body *mutt_make_multipart(struct Body *b)
1689 struct Body *new = mutt_body_new();
1690 new->type = TYPE_MULTIPART;
1691 new->subtype = mutt_str_strdup("mixed");
1692 new->encoding = get_toplevel_encoding(b);
1695 mutt_generate_boundary(&new->parameter);
1696 if (check_boundary(mutt_param_get(&new->parameter, "boundary"), b))
1697 mutt_param_delete(&new->parameter, "boundary");
1698 } while (!mutt_param_get(&new->parameter, "boundary"));
1699 new->use_disp = false;
1700 new->disposition = DISP_INLINE;
1707 * mutt_remove_multipart - Extract the multipart body if it exists
1708 * @param b Body to alter
1709 * @retval ptr The parts of the Body
1711 * @note The original Body is freed
1713 struct Body *mutt_remove_multipart(struct Body *b)
1715 struct Body *t = NULL;
1728 * mutt_write_address_list - wrapper around mutt_write_address()
1729 * @param addr Address list
1730 * @param fp File to write to
1731 * @param linelen Line length to use
1732 * @param display True if these addresses will be displayed to the user
1734 * So we can handle very large recipient lists without needing a huge temporary
1737 void mutt_write_address_list(struct Address *addr, FILE *fp, int linelen, bool display)
1739 struct Address *tmp = NULL;
1748 mutt_addr_write(buf, sizeof(buf), addr, display);
1749 size_t len = mutt_str_strlen(buf);
1750 if (count && (linelen + len > 74))
1753 linelen = len + 8; /* tab is usually about 8 spaces... */
1757 if (count && addr->mailbox)
1766 if (!addr->group && addr->next && addr->next->mailbox)
1778 * mutt_write_references - Add the message references to a list
1779 * @param r String List of references
1780 * @param fp File to write to
1781 * @param trim Trim the list to at most this many items
1783 * Write the list in reverse because they are stored in reverse order when
1784 * parsed to speed up threading.
1786 void mutt_write_references(const struct ListHead *r, FILE *fp, size_t trim)
1788 struct ListNode *np = NULL;
1791 STAILQ_FOREACH(np, r, entries)
1793 if (++length == trim)
1797 struct ListNode **ref = mutt_mem_calloc(length, sizeof(struct ListNode *));
1799 // store in reverse order
1800 size_t tmp = length;
1801 STAILQ_FOREACH(np, r, entries)
1808 for (size_t i = 0; i < length; i++)
1811 fputs(ref[i]->data, fp);
1812 if (i != length - 1)
1820 * print_val - Add pieces to an email header, wrapping where necessary
1821 * @param fp File to write to
1822 * @param pfx Prefix for headers
1823 * @param value Text to be added
1824 * @param chflags Flags, see #CopyHeaderFlags
1825 * @param col Column that this text starts at
1827 * @retval -1 Failure
1829 static int print_val(FILE *fp, const char *pfx, const char *value,
1830 CopyHeaderFlags chflags, size_t col)
1832 while (value && *value)
1834 if (fputc(*value, fp) == EOF)
1836 /* corner-case: break words longer than 998 chars by force,
1837 * mandated by RFC5322 */
1838 if (!(chflags & CH_DISPLAY) && (++col >= 998))
1840 if (fputs("\n ", fp) < 0)
1846 if (*(value + 1) && pfx && *pfx && (fputs(pfx, fp) == EOF))
1848 /* for display, turn folding spaces into folding tabs */
1849 if ((chflags & CH_DISPLAY) && ((*(value + 1) == ' ') || (*(value + 1) == '\t')))
1852 while (*value && (*value == ' ' || *value == '\t'))
1854 if (fputc('\t', fp) == EOF)
1865 * fold_one_header - Fold one header line
1866 * @param fp File to write to
1867 * @param tag Header key, e.g. "From"
1868 * @param value Header value
1869 * @param pfx Prefix for header
1870 * @param wraplen Column to wrap at
1871 * @param chflags Flags, see #CopyHeaderFlags
1873 * @retval -1 Failure
1875 static int fold_one_header(FILE *fp, const char *tag, const char *value,
1876 const char *pfx, int wraplen, CopyHeaderFlags chflags)
1878 const char *p = value;
1879 char buf[8192] = "";
1880 int first = 1, col = 0, l = 0;
1881 const bool display = (chflags & CH_DISPLAY);
1883 mutt_debug(5, "pfx=[%s], tag=[%s], flags=%d value=[%s]\n", pfx, tag, chflags,
1886 if (tag && *tag && (fprintf(fp, "%s%s: ", NONULL(pfx), tag) < 0))
1888 col = mutt_str_strlen(tag) + (tag && *tag ? 2 : 0) + mutt_str_strlen(pfx);
1894 /* find the next word and place it in 'buf'. it may start with
1895 * whitespace we can fold before */
1896 const char *next = mutt_str_find_word(p);
1897 l = MIN(sizeof(buf) - 1, next - p);
1901 /* determine width: character cells for display, bytes for sending
1902 * (we get pure ascii only) */
1903 const int w = mutt_mb_width(buf, col, display);
1904 const int enc = mutt_str_startswith(buf, "=?", CASE_MATCH);
1906 mutt_debug(5, "word=[%s], col=%d, w=%d, next=[0x0%x]\n", buf, col, w, *next);
1908 /* insert a folding \n before the current word's lwsp except for
1909 * header name, first word on a line (word longer than wrap width)
1910 * and encoded words */
1911 if (!first && !enc && col && (col + w >= wraplen))
1913 col = mutt_str_strlen(pfx);
1915 if (fprintf(fp, "\n%s", NONULL(pfx)) <= 0)
1919 /* print the actual word; for display, ignore leading ws for word
1920 * and fold with tab for readability */
1921 if (display && fold)
1924 while (*pc && (*pc == ' ' || *pc == '\t'))
1929 if (fputc('\t', fp) == EOF)
1931 if (print_val(fp, pfx, pc, chflags, col) < 0)
1935 else if (print_val(fp, pfx, buf, chflags, col) < 0)
1939 /* if the current word ends in \n, ignore all its trailing spaces
1940 * and reset column; this prevents us from putting only spaces (or
1941 * even none) on a line if the trailing spaces are located at our
1942 * current line width
1943 * XXX this covers ASCII space only, for display we probably
1944 * want something like iswspace() here */
1945 const char *sp = next;
1946 while (*sp && (*sp == ' ' || *sp == '\t'))
1958 /* if we have printed something but didn't \n-terminate it, do it
1959 * except the last word we printed ended in \n already */
1960 if (col && ((l == 0) || (buf[l - 1] != '\n')))
1961 if (putc('\n', fp) == EOF)
1968 * unfold_header - Unfold a wrapped email header
1969 * @param s String to process
1970 * @retval ptr Unfolded string
1972 * @note The string is altered in-place
1974 static char *unfold_header(char *s)
1976 char *p = s, *q = s;
1980 /* remove CRLF prior to FWSP, turn \t into ' ' */
1981 if ((*p == '\r') && *(p + 1) && (*(p + 1) == '\n') && *(p + 2) &&
1982 ((*(p + 2) == ' ') || (*(p + 2) == '\t')))
1988 /* remove LF prior to FWSP, turn \t into ' ' */
1989 else if ((*p == '\n') && *(p + 1) && ((*(p + 1) == ' ') || (*(p + 1) == '\t')))
2004 * write_one_header - Write out one header line
2005 * @param fp File to write to
2006 * @param pfxw Width of prefix string
2007 * @param max Max width
2008 * @param wraplen Column to wrap at
2009 * @param pfx Prefix for header
2010 * @param start Start of header line
2011 * @param end End of header line
2012 * @param chflags Flags, see #CopyHeaderFlags
2014 * @retval -1 Failure
2016 static int write_one_header(FILE *fp, int pfxw, int max, int wraplen, const char *pfx,
2017 const char *start, const char *end, CopyHeaderFlags chflags)
2019 char *tagbuf = NULL, *valbuf = NULL, *t = NULL;
2020 bool is_from = ((end - start) > 5) && mutt_str_startswith(start, "from ", CASE_IGNORE);
2022 /* only pass through folding machinery if necessary for sending,
2023 * never wrap From_ headers on sending */
2024 if (!(chflags & CH_DISPLAY) && ((pfxw + max <= wraplen) || is_from))
2026 valbuf = mutt_str_substr_dup(start, end);
2027 mutt_debug(5, "buf[%s%s] short enough, max width = %d <= %d\n", NONULL(pfx),
2028 valbuf, max, wraplen);
2031 if (fputs(pfx, fp) == EOF)
2038 t = strchr(valbuf, ':');
2041 mutt_debug(LL_DEBUG1, "#1 warning: header not in 'key: value' format!\n");
2045 if (print_val(fp, pfx, valbuf, chflags, mutt_str_strlen(pfx)) < 0)
2054 t = strchr(start, ':');
2055 if (!t || (t > end))
2057 mutt_debug(LL_DEBUG1, "#2 warning: header not in 'key: value' format!\n");
2063 valbuf = mutt_str_substr_dup(start, end);
2067 tagbuf = mutt_str_substr_dup(start, t);
2068 /* skip over the colon separating the header field name and value */
2071 /* skip over any leading whitespace (WSP, as defined in RFC5322)
2072 * NOTE: mutt_str_skip_email_wsp() does the wrong thing here.
2073 * See tickets 3609 and 3716. */
2074 while (*t == ' ' || *t == '\t')
2077 valbuf = mutt_str_substr_dup(t, end);
2079 mutt_debug(LL_DEBUG2, "buf[%s%s] too long, max width = %d > %d\n",
2080 NONULL(pfx), NONULL(valbuf), max, wraplen);
2081 if (fold_one_header(fp, tagbuf, valbuf, pfx, wraplen, chflags) < 0)
2094 * mutt_write_one_header - Write one header line to a file
2095 * @param fp File to write to
2096 * @param tag Header key, e.g. "From"
2097 * @param value Header value
2098 * @param pfx Prefix for header
2099 * @param wraplen Column to wrap at
2100 * @param chflags Flags, see #CopyHeaderFlags
2102 * @retval -1 Failure
2104 * split several headers into individual ones and call write_one_header
2107 int mutt_write_one_header(FILE *fp, const char *tag, const char *value,
2108 const char *pfx, int wraplen, CopyHeaderFlags chflags)
2110 char *p = (char *) value, *last = NULL, *line = NULL;
2111 int max = 0, w, rc = -1;
2112 int pfxw = mutt_strwidth(pfx);
2113 char *v = mutt_str_strdup(value);
2114 bool display = (chflags & CH_DISPLAY);
2116 if (!display || C_Weed)
2117 v = unfold_header(v);
2119 /* when not displaying, use sane wrap value */
2122 if ((C_WrapHeaders < 78) || (C_WrapHeaders > 998))
2125 wraplen = C_WrapHeaders;
2127 else if ((wraplen <= 0) || (wraplen > MuttIndexWindow->cols))
2128 wraplen = MuttIndexWindow->cols;
2132 /* if header is short enough, simply print it */
2133 if (!display && (mutt_strwidth(tag) + 2 + pfxw + mutt_strwidth(v) <= wraplen))
2135 mutt_debug(5, "buf[%s%s: %s] is short enough\n", NONULL(pfx), tag, v);
2136 if (fprintf(fp, "%s%s: %s\n", NONULL(pfx), tag, v) <= 0)
2143 rc = fold_one_header(fp, tag, v, pfx, wraplen, chflags);
2153 p = strchr(p, '\n');
2155 /* find maximum line width in current header */
2158 w = mutt_mb_width(line, 0, display);
2168 if ((*p != ' ') && (*p != '\t'))
2170 if (write_one_header(fp, pfxw, max, wraplen, pfx, last, p, chflags) < 0)
2178 if (write_one_header(fp, pfxw, max, wraplen, pfx, last, p, chflags) < 0)
2189 * mutt_rfc822_write_header - Write out one RFC822 header line
2190 * @param fp File to write to
2191 * @param env Envelope of email
2192 * @param attach Attachment
2193 * @param mode Mode, see #MuttWriteHeaderMode
2194 * @param privacy If true, remove headers that might identify the user
2195 * @param hide_protected_subject If true, replace subject header
2197 * @retval -1 Failure
2199 * Note: all RFC2047 encoding should be done outside of this routine, except
2200 * for the "real name." This will allow this routine to be used more than
2201 * once, if necessary.
2203 * Likewise, all IDN processing should happen outside of this routine.
2205 * privacy true => will omit any headers which may identify the user.
2206 * Output generated is suitable for being sent through
2207 * anonymous remailer chains.
2209 * hide_protected_subject: replaces the Subject header with
2210 * $crypt_protected_headers_subject in NORMAL or POSTPONE mode.
2212 int mutt_rfc822_write_header(FILE *fp, struct Envelope *env,
2213 struct Body *attach, enum MuttWriteHeaderMode mode,
2214 bool privacy, bool hide_protected_subject)
2217 char *p = NULL, *q = NULL;
2218 bool has_agent = false; /* user defined user-agent header field exists */
2220 if ((mode == MUTT_WRITE_HEADER_NORMAL) && !privacy)
2221 fputs(mutt_date_make_date(buf, sizeof(buf)), fp);
2223 /* UseFrom is not consulted here so that we can still write a From:
2224 * field if the user sets it with the 'my_hdr' command */
2225 if (env->from && !privacy)
2228 mutt_addr_write(buf, sizeof(buf), env->from, false);
2229 fprintf(fp, "From: %s\n", buf);
2232 if (env->sender && !privacy)
2235 mutt_addr_write(buf, sizeof(buf), env->sender, false);
2236 fprintf(fp, "Sender: %s\n", buf);
2242 mutt_write_address_list(env->to, fp, 4, 0);
2244 else if (mode == MUTT_WRITE_HEADER_EDITHDRS)
2253 mutt_write_address_list(env->cc, fp, 4, 0);
2255 else if (mode == MUTT_WRITE_HEADER_EDITHDRS)
2263 if ((mode == MUTT_WRITE_HEADER_POSTPONE) || (mode == MUTT_WRITE_HEADER_EDITHDRS) ||
2264 ((mode == MUTT_WRITE_HEADER_NORMAL) && C_WriteBcc))
2267 mutt_write_address_list(env->bcc, fp, 5, 0);
2270 else if (mode == MUTT_WRITE_HEADER_EDITHDRS)
2274 fputs("Bcc:\n", fp);
2277 if (env->newsgroups)
2278 fprintf(fp, "Newsgroups: %s\n", env->newsgroups);
2279 else if ((mode == MUTT_WRITE_HEADER_EDITHDRS) && OptNewsSend)
2280 fputs("Newsgroups:\n", fp);
2282 if (env->followup_to)
2283 fprintf(fp, "Followup-To: %s\n", env->followup_to);
2284 else if ((mode == MUTT_WRITE_HEADER_EDITHDRS) && OptNewsSend)
2285 fputs("Followup-To:\n", fp);
2287 if (env->x_comment_to)
2288 fprintf(fp, "X-Comment-To: %s\n", env->x_comment_to);
2289 else if ((mode == MUTT_WRITE_HEADER_EDITHDRS) && OptNewsSend && C_XCommentTo)
2290 fputs("X-Comment-To:\n", fp);
2295 if (hide_protected_subject &&
2296 ((mode == MUTT_WRITE_HEADER_NORMAL) || (mode == MUTT_WRITE_HEADER_POSTPONE)))
2297 mutt_write_one_header(fp, "Subject", C_CryptProtectedHeadersSubject, NULL, 0, 0);
2299 mutt_write_one_header(fp, "Subject", env->subject, NULL, 0, 0);
2301 else if (mode == MUTT_WRITE_HEADER_EDITHDRS)
2302 fputs("Subject:\n", fp);
2304 /* save message id if the user has set it */
2305 if (env->message_id && !privacy)
2306 fprintf(fp, "Message-ID: %s\n", env->message_id);
2310 fputs("Reply-To: ", fp);
2311 mutt_write_address_list(env->reply_to, fp, 10, 0);
2313 else if (mode == MUTT_WRITE_HEADER_EDITHDRS)
2314 fputs("Reply-To:\n", fp);
2316 if (env->mail_followup_to)
2321 fputs("Mail-Followup-To: ", fp);
2322 mutt_write_address_list(env->mail_followup_to, fp, 18, 0);
2325 if ((mode == MUTT_WRITE_HEADER_NORMAL) || (mode == MUTT_WRITE_HEADER_POSTPONE))
2327 if (!STAILQ_EMPTY(&env->references))
2329 fputs("References:", fp);
2330 mutt_write_references(&env->references, fp, 10);
2334 /* Add the MIME headers */
2335 fputs("MIME-Version: 1.0\n", fp);
2336 mutt_write_mime_header(attach, fp);
2339 if (!STAILQ_EMPTY(&env->in_reply_to))
2341 fputs("In-Reply-To:", fp);
2342 mutt_write_references(&env->in_reply_to, fp, 0);
2346 /* Add any user defined headers */
2347 struct ListNode *tmp = NULL;
2348 STAILQ_FOREACH(tmp, &env->userhdrs, entries)
2350 p = strchr(tmp->data, ':');
2357 p = mutt_str_skip_email_wsp(p + 1);
2361 continue; /* don't emit empty fields. */
2364 /* check to see if the user has overridden the user-agent field */
2365 if (mutt_str_startswith(tmp->data, "user-agent", CASE_IGNORE))
2375 mutt_write_one_header(fp, tmp->data, p, NULL, 0, 0);
2380 if ((mode == MUTT_WRITE_HEADER_NORMAL) && !privacy && C_UserAgent && !has_agent)
2382 /* Add a vanity header */
2383 fprintf(fp, "User-Agent: NeoMutt/%s%s\n", PACKAGE_VERSION, GitVer);
2386 return ferror(fp) == 0 ? 0 : -1;
2390 * encode_headers - RFC2047-encode a list of headers
2391 * @param h String List of headers
2393 * The strings are encoded in-place.
2395 static void encode_headers(struct ListHead *h)
2401 struct ListNode *np = NULL;
2402 STAILQ_FOREACH(np, h, entries)
2404 p = strchr(np->data, ':');
2409 p = mutt_str_skip_email_wsp(p + 1);
2410 tmp = mutt_str_strdup(p);
2415 rfc2047_encode(&tmp, NULL, i + 2, C_SendCharset);
2416 mutt_mem_realloc(&np->data, i + 2 + mutt_str_strlen(tmp) + 1);
2418 sprintf(np->data + i + 2, "%s", tmp);
2425 * mutt_fqdn - Get the Fully-Qualified Domain Name
2426 * @param may_hide_host If true, hide the hostname (leaving just the domain)
2427 * @retval ptr string pointer into Hostname
2428 * @retval NULL Error, e.g no Hostname
2430 * @warning Do not free the returned pointer
2432 const char *mutt_fqdn(bool may_hide_host)
2434 if (!C_Hostname || (C_Hostname[0] == '@'))
2437 char *p = C_Hostname;
2439 if (may_hide_host && C_HiddenHost)
2441 p = strchr(C_Hostname, '.');
2445 // sanity check: don't hide the host if the fqdn is something like example.com
2446 if (!p || !strchr(p, '.'))
2454 * gen_msgid - Generate a unique Message ID
2455 * @retval ptr Message ID
2457 * @note The caller should free the string
2459 static char *gen_msgid(void)
2462 unsigned char rndid[MUTT_RANDTAG_LEN + 1];
2464 mutt_rand_base32(rndid, sizeof(rndid) - 1);
2465 rndid[MUTT_RANDTAG_LEN] = 0;
2466 const char *fqdn = mutt_fqdn(false);
2468 fqdn = NONULL(ShortHostname);
2470 struct tm tm = mutt_date_gmtime(MUTT_DATE_NOW);
2471 snprintf(buf, sizeof(buf), "<%d%02d%02d%02d%02d%02d.%s@%s>", tm.tm_year + 1900,
2472 tm.tm_mon + 1, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec, rndid, fqdn);
2473 return mutt_str_strdup(buf);
2477 * alarm_handler - Async notification of an alarm signal
2478 * @param sig Signal, (SIGALRM)
2480 static void alarm_handler(int sig)
2486 * send_msg - invoke sendmail in a subshell
2487 * @param[in] path Path to program to execute
2488 * @param[in] args Arguments to pass to program
2489 * @param[in] msg Temp file containing message to send
2490 * @param[out] tempfile If sendmail is put in the background, this points
2491 * to the temporary file containing the stdout of the
2492 * child process. If it is NULL, stderr and stdout
2493 * are not redirected.
2495 * @retval >0 Failure, return code from sendmail
2497 static int send_msg(const char *path, char **args, const char *msg, char **tempfile)
2502 mutt_sig_block_system();
2505 /* we also don't want to be stopped right now */
2506 sigaddset(&set, SIGTSTP);
2507 sigprocmask(SIG_BLOCK, &set, NULL);
2509 if ((C_SendmailWait >= 0) && tempfile)
2513 mutt_mktemp(tmp, sizeof(tmp));
2514 *tempfile = mutt_str_strdup(tmp);
2520 struct sigaction act, oldalrm;
2522 /* save parent's ID before setsid() */
2523 pid_t ppid = getppid();
2525 /* we want the delivery to continue even after the main process dies,
2526 * so we put ourselves into another session right away */
2529 /* next we close all open files */
2532 for (int fd = tempfile ? 1 : 3; fd < OPEN_MAX; fd++)
2534 #elif defined(_POSIX_OPEN_MAX)
2535 for (int fd = tempfile ? 1 : 3; fd < _POSIX_OPEN_MAX; fd++)
2545 /* now the second fork() */
2549 /* "msg" will be opened as stdin */
2550 if (open(msg, O_RDONLY, 0) < 0)
2557 if ((C_SendmailWait >= 0) && tempfile && *tempfile)
2559 /* *tempfile will be opened as stdout */
2560 if (open(*tempfile, O_WRONLY | O_APPEND | O_CREAT | O_EXCL, 0600) < 0)
2562 /* redirect stderr to *tempfile too */
2568 if (open("/dev/null", O_WRONLY | O_APPEND) < 0) /* stdout */
2570 if (open("/dev/null", O_RDWR | O_APPEND) < 0) /* stderr */
2574 /* execvpe is a glibc extension */
2575 /* execvpe (path, args, mutt_envlist_getlist()); */
2586 /* C_SendmailWait > 0: interrupt waitpid() after C_SendmailWait seconds
2587 * C_SendmailWait = 0: wait forever
2588 * C_SendmailWait < 0: don't wait */
2589 if (C_SendmailWait > 0)
2592 act.sa_handler = alarm_handler;
2594 /* need to make sure waitpid() is interrupted on SIGALRM */
2595 act.sa_flags = SA_INTERRUPT;
2599 sigemptyset(&act.sa_mask);
2600 sigaction(SIGALRM, &act, &oldalrm);
2601 alarm(C_SendmailWait);
2603 else if (C_SendmailWait < 0)
2604 _exit(0xff & EX_OK);
2606 if (waitpid(pid, &st, 0) > 0)
2608 st = WIFEXITED(st) ? WEXITSTATUS(st) : S_ERR;
2609 if (C_SendmailWait && (st == (0xff & EX_OK)) && tempfile && *tempfile)
2611 unlink(*tempfile); /* no longer needed */
2617 st = (C_SendmailWait > 0 && errno == EINTR && SigAlrm) ? S_BKG : S_ERR;
2618 if ((C_SendmailWait > 0) && tempfile && *tempfile)
2625 if (C_SendmailWait > 0)
2627 /* reset alarm; not really needed, but... */
2629 sigaction(SIGALRM, &oldalrm, NULL);
2632 if ((kill(ppid, 0) == -1) && (errno == ESRCH) && tempfile && *tempfile)
2634 /* the parent is already dead */
2642 sigprocmask(SIG_UNBLOCK, &set, NULL);
2644 if ((pid != -1) && (waitpid(pid, &st, 0) > 0))
2645 st = WIFEXITED(st) ? WEXITSTATUS(st) : S_ERR; /* return child status */
2647 st = S_ERR; /* error */
2649 mutt_sig_unblock_system(true);
2655 * add_args - Add an Address to a dynamic array
2656 * @param[out] args Array to add to
2657 * @param[out] argslen Number of entries in array
2658 * @param[out] argsmax Allocated size of the array
2659 * @param[in] addr Address to add
2660 * @retval ptr Updated array
2662 static char **add_args(char **args, size_t *argslen, size_t *argsmax, struct Address *addr)
2664 for (; addr; addr = addr->next)
2666 /* weed out group mailboxes, since those are for display only */
2667 if (addr->mailbox && !addr->group)
2669 if (*argslen == *argsmax)
2670 mutt_mem_realloc(&args, (*argsmax += 5) * sizeof(char *));
2671 args[(*argslen)++] = addr->mailbox;
2678 * add_option - Add a string to a dynamic array
2679 * @param[out] args Array to add to
2680 * @param[out] argslen Number of entries in array
2681 * @param[out] argsmax Allocated size of the array
2682 * @param[in] s string to add
2683 * @retval ptr Updated array
2685 * @note The array may be realloc()'d
2687 static char **add_option(char **args, size_t *argslen, size_t *argsmax, char *s)
2689 if (*argslen == *argsmax)
2690 mutt_mem_realloc(&args, (*argsmax += 5) * sizeof(char *));
2691 args[(*argslen)++] = s;
2696 * mutt_invoke_sendmail - Run sendmail
2697 * @param from The sender
2698 * @param to Recipients
2699 * @param cc Recipients
2700 * @param bcc Recipients
2701 * @param msg File containing message
2702 * @param eightbit Message contains 8bit chars
2704 * @retval -1 Failure
2706 int mutt_invoke_sendmail(struct Address *from, struct Address *to, struct Address *cc,
2707 struct Address *bcc, const char *msg, int eightbit)
2709 char *ps = NULL, *path = NULL, *s = NULL, *childout = NULL;
2711 size_t argslen = 0, argsmax = 0;
2712 char **extra_args = NULL;
2720 mutt_expando_format(cmd, sizeof(cmd), 0, MuttIndexWindow->cols,
2721 NONULL(C_Inews), nntp_format_str, 0, 0);
2724 i = nntp_post(Context->mailbox, msg);
2729 s = mutt_str_strdup(cmd);
2733 s = mutt_str_strdup(C_Sendmail);
2735 /* ensure that $sendmail is set to avoid a crash. http://dev.mutt.org/trac/ticket/3548 */
2738 mutt_error(_("$sendmail must be set in order to send mail"));
2744 while ((ps = strtok(ps, " ")))
2746 if (argslen == argsmax)
2747 mutt_mem_realloc(&args, sizeof(char *) * (argsmax += 5));
2751 if (mutt_str_strcmp(ps, "--") == 0)
2753 args[argslen++] = ps;
2757 path = mutt_str_strdup(ps);
2758 ps = strrchr(ps, '/');
2763 args[argslen++] = ps;
2773 size_t extra_argslen = 0;
2774 /* If C_Sendmail contained a "--", we save the recipients to append to
2775 * args after other possible options added below. */
2779 size_t extra_argsmax = 0;
2780 while ((ps = strtok(ps, " ")))
2782 if (extra_argslen == extra_argsmax)
2783 mutt_mem_realloc(&extra_args, sizeof(char *) * (extra_argsmax += 5));
2785 extra_args[extra_argslen++] = ps;
2790 if (eightbit && C_Use8bitmime)
2791 args = add_option(args, &argslen, &argsmax, "-B8BITMIME");
2793 if (C_UseEnvelopeFrom)
2795 if (C_EnvelopeFromAddress)
2797 args = add_option(args, &argslen, &argsmax, "-f");
2798 args = add_args(args, &argslen, &argsmax, C_EnvelopeFromAddress);
2800 else if (from && !from->next)
2802 args = add_option(args, &argslen, &argsmax, "-f");
2803 args = add_args(args, &argslen, &argsmax, from);
2809 args = add_option(args, &argslen, &argsmax, "-N");
2810 args = add_option(args, &argslen, &argsmax, C_DsnNotify);
2814 args = add_option(args, &argslen, &argsmax, "-R");
2815 args = add_option(args, &argslen, &argsmax, C_DsnReturn);
2817 args = add_option(args, &argslen, &argsmax, "--");
2818 for (i = 0; i < extra_argslen; i++)
2819 args = add_option(args, &argslen, &argsmax, extra_args[i]);
2820 args = add_args(args, &argslen, &argsmax, to);
2821 args = add_args(args, &argslen, &argsmax, cc);
2822 args = add_args(args, &argslen, &argsmax, bcc);
2827 if (argslen == argsmax)
2828 mutt_mem_realloc(&args, sizeof(char *) * (++argsmax));
2830 args[argslen++] = NULL;
2832 /* Some user's $sendmail command uses gpg for password decryption,
2833 * and is set up to prompt using ncurses pinentry. If we
2834 * mutt_endwin() it leaves other users staring at a blank screen.
2835 * So instead, just force a hard redraw on the next refresh. */
2837 mutt_need_hard_redraw();
2839 i = send_msg(path, args, msg, OptNoCurses ? NULL : &childout);
2840 if (i != (EX_OK & 0xff))
2844 const char *e = mutt_str_sysexit(i);
2845 mutt_error(_("Error sending message, child exited %d (%s)"), i, NONULL(e));
2850 if ((stat(childout, &st) == 0) && (st.st_size > 0))
2851 mutt_do_pager(_("Output of the delivery process"), childout, 0, NULL);
2864 if (i == (EX_OK & 0xff))
2866 else if (i == S_BKG)
2874 * mutt_prepare_envelope - Prepare an email header
2875 * @param env Envelope to prepare
2876 * @param final true if this email is going to be sent (not postponed)
2878 * Encode all the headers prior to sending the email.
2880 * For postponing (!final) do the necessary encodings only
2882 void mutt_prepare_envelope(struct Envelope *env, bool final)
2886 if (env->bcc && !(env->to || env->cc))
2888 /* some MTA's will put an Apparently-To: header field showing the Bcc:
2889 * recipients if there is no To: or Cc: field, so attempt to suppress
2890 * it by using an empty To: field. */
2891 env->to = mutt_addr_new();
2893 env->to->next = mutt_addr_new();
2897 mutt_addr_cat(buf, sizeof(buf), "undisclosed-recipients", AddressSpecials);
2899 env->to->mailbox = mutt_str_strdup(buf);
2902 mutt_set_followup_to(env);
2904 if (!env->message_id)
2905 env->message_id = gen_msgid();
2908 /* Take care of 8-bit => 7-bit conversion. */
2909 rfc2047_encode_envelope(env);
2910 encode_headers(&env->userhdrs);
2914 * mutt_unprepare_envelope - Undo the encodings of mutt_prepare_envelope()
2915 * @param env Envelope to unprepare
2917 * Decode all the headers of an email, e.g. when the sending failed or was
2920 void mutt_unprepare_envelope(struct Envelope *env)
2922 struct ListNode *item = NULL;
2923 STAILQ_FOREACH(item, &env->userhdrs, entries)
2925 rfc2047_decode(&item->data);
2928 mutt_addr_free(&env->mail_followup_to);
2930 /* back conversions */
2931 rfc2047_decode_envelope(env);
2935 * bounce_message - Bounce an email message
2936 * @param fp Handle of message
2938 * @param to Address to bounce to
2939 * @param resent_from Address of new sender
2940 * @param env_from Envelope of original sender
2942 * @retval -1 Failure
2944 static int bounce_message(FILE *fp, struct Email *e, struct Address *to,
2945 const char *resent_from, struct Address *env_from)
2951 char tempfile[PATH_MAX];
2953 mutt_mktemp(tempfile, sizeof(tempfile));
2954 FILE *fp_tmp = mutt_file_fopen(tempfile, "w");
2958 CopyHeaderFlags chflags = CH_XMIT | CH_NONEWLINE | CH_NOQFROM;
2960 if (!C_BounceDelivered)
2961 chflags |= CH_WEED_DELIVERED;
2963 fseeko(fp, e->offset, SEEK_SET);
2964 fprintf(fp_tmp, "Resent-From: %s", resent_from);
2965 fprintf(fp_tmp, "\nResent-%s", mutt_date_make_date(date, sizeof(date)));
2966 char *msgid_str = gen_msgid();
2967 fprintf(fp_tmp, "Resent-Message-ID: %s\n", msgid_str);
2969 fputs("Resent-To: ", fp_tmp);
2970 mutt_write_address_list(to, fp_tmp, 11, 0);
2971 mutt_copy_header(fp, e, fp_tmp, chflags, NULL);
2972 fputc('\n', fp_tmp);
2973 mutt_file_copy_bytes(fp, fp_tmp, e->content->length);
2974 if (mutt_file_fclose(&fp_tmp) != 0)
2976 mutt_perror(tempfile);
2982 rc = mutt_smtp_send(env_from, to, NULL, NULL, tempfile, e->content->encoding == ENC_8BIT);
2985 rc = mutt_invoke_sendmail(env_from, to, NULL, NULL, tempfile,
2986 e->content->encoding == ENC_8BIT);
2993 * mutt_bounce_message - Bounce an email message
2994 * @param fp Handle of message
2996 * @param to Address to bounce to
2998 * @retval -1 Failure
3000 int mutt_bounce_message(FILE *fp, struct Email *e, struct Address *to)
3002 if (!fp || !e || !to)
3005 const char *fqdn = mutt_fqdn(true);
3006 char resent_from[256];
3009 resent_from[0] = '\0';
3010 struct Address *from = mutt_default_from();
3012 /* mutt_default_from() does not use $realname if the real name is not set
3013 * in $from, so we add it here. The reason it is not added in
3014 * mutt_default_from() is that during normal sending, we execute
3015 * send-hooks and set the realname last so that it can be changed based
3016 * upon message criteria. */
3017 if (!from->personal)
3018 from->personal = mutt_str_strdup(C_Realname);
3021 mutt_addr_qualify(from, fqdn);
3023 rfc2047_encode_addrlist(from, "Resent-From");
3024 if (mutt_addrlist_to_intl(from, &err))
3026 mutt_error(_("Bad IDN %s while preparing resent-from"), err);
3028 mutt_addr_free(&from);
3031 mutt_addr_write(resent_from, sizeof(resent_from), from, false);
3034 OptNewsSend = false;
3037 /* prepare recipient list. idna conversion appears to happen before this
3038 * function is called, since the user receives confirmation of the address
3039 * list being bounced to. */
3040 struct Address *resent_to = mutt_addr_copy_list(to, false);
3041 rfc2047_encode_addrlist(resent_to, "Resent-To");
3043 int rc = bounce_message(fp, e, resent_to, resent_from, from);
3045 mutt_addr_free(&resent_to);
3046 mutt_addr_free(&from);
3052 * set_noconv_flags - Set/reset the "x-mutt-noconv" flag
3053 * @param b Body of email
3054 * @param flag If true, set the flag, otherwise remove it
3056 static void set_noconv_flags(struct Body *b, bool flag)
3058 for (; b; b = b->next)
3060 if ((b->type == TYPE_MESSAGE) || (b->type == TYPE_MULTIPART))
3061 set_noconv_flags(b->parts, flag);
3062 else if ((b->type == TYPE_TEXT) && b->noconv)
3065 mutt_param_set(&b->parameter, "x-mutt-noconv", "yes");
3067 mutt_param_delete(&b->parameter, "x-mutt-noconv");
3073 * mutt_write_multiple_fcc - Handle FCC with multiple, comma separated entries
3074 * @param[in] path Path to mailboxes (comma separated)
3075 * @param[in] e Email
3076 * @param[in] msgid Message id
3077 * @param[in] post If true, postpone message
3078 * @param[in] fcc fcc setting to save (postpone only)
3079 * @param[out] finalpath Final path of email
3081 * @retval -1 Failure
3083 int mutt_write_multiple_fcc(const char *path, struct Email *e, const char *msgid,
3084 bool post, char *fcc, char **finalpath)
3086 char fcc_tok[PATH_MAX];
3087 char fcc_expanded[PATH_MAX];
3089 mutt_str_strfcpy(fcc_tok, path, sizeof(fcc_tok));
3091 char *tok = strtok(fcc_tok, ",");
3095 mutt_debug(LL_DEBUG1, "Fcc: initial mailbox = '%s'\n", tok);
3096 /* mutt_expand_path already called above for the first token */
3097 int status = mutt_write_fcc(tok, e, msgid, post, fcc, finalpath);
3101 while ((tok = strtok(NULL, ",")))
3106 /* Only call mutt_expand_path if tok has some data */
3107 mutt_debug(LL_DEBUG1, "Fcc: additional mailbox token = '%s'\n", tok);
3108 mutt_str_strfcpy(fcc_expanded, tok, sizeof(fcc_expanded));
3109 mutt_expand_path(fcc_expanded, sizeof(fcc_expanded));
3110 mutt_debug(LL_DEBUG1, " Additional mailbox expanded = '%s'\n", fcc_expanded);
3111 status = mutt_write_fcc(fcc_expanded, e, msgid, post, fcc, finalpath);
3120 * mutt_write_fcc - Write email to FCC mailbox
3121 * @param[in] path Path to mailbox
3122 * @param[in] e Email
3123 * @param[in] msgid Message id
3124 * @param[in] post If true, postpone message
3125 * @param[in] fcc fcc setting to save (postpone only)
3126 * @param[out] finalpath Final path of email
3128 * @retval -1 Failure
3130 int mutt_write_fcc(const char *path, struct Email *e, const char *msgid,
3131 bool post, char *fcc, char **finalpath)
3133 struct Message *msg = NULL;
3134 char tempfile[PATH_MAX];
3135 FILE *fp_tmp = NULL;
3137 bool need_mailbox_cleanup = false;
3140 MsgOpenFlags onm_flags;
3143 set_noconv_flags(e->content, true);
3145 #ifdef RECORD_FOLDER_HOOK
3146 mutt_folder_hook(path, NULL);
3148 struct Mailbox *m_fcc = mx_path_resolve(path);
3149 struct Context *ctx_fcc = mx_mbox_open(m_fcc, MUTT_APPEND | MUTT_QUIET);
3152 mutt_debug(LL_DEBUG1, "unable to open mailbox %s in append-mode, aborting.\n", path);
3153 mailbox_free(&m_fcc);
3157 /* We need to add a Content-Length field to avoid problems where a line in
3158 * the message body begins with "From " */
3159 if ((ctx_fcc->mailbox->magic == MUTT_MMDF) || (ctx_fcc->mailbox->magic == MUTT_MBOX))
3161 mutt_mktemp(tempfile, sizeof(tempfile));
3162 fp_tmp = mutt_file_fopen(tempfile, "w+");
3165 mutt_perror(tempfile);
3166 mx_mbox_close(&ctx_fcc);
3169 /* remember new mail status before appending message */
3170 need_mailbox_cleanup = true;
3174 e->read = !post; /* make sure to put it in the 'cur' directory (maildir) */
3175 onm_flags = MUTT_ADD_FROM;
3177 onm_flags |= MUTT_SET_DRAFT;
3178 msg = mx_msg_open_new(ctx_fcc->mailbox, e, onm_flags);
3181 mutt_file_fclose(&fp_tmp);
3182 mx_mbox_close(&ctx_fcc);
3186 /* post == 1 => postpone message.
3187 * post == 0 => Normal mode. */
3188 mutt_rfc822_write_header(
3189 msg->fp, e->env, e->content, post ? MUTT_WRITE_HEADER_POSTPONE : MUTT_WRITE_HEADER_NORMAL,
3190 false, C_CryptProtectedHeadersRead && mutt_should_hide_protected_subject(e));
3192 /* (postponement) if this was a reply of some sort, <msgid> contains the
3193 * Message-ID: of message replied to. Save it using a special X-Mutt-
3194 * header so it can be picked up if the message is recalled at a later
3195 * point in time. This will allow the message to be marked as replied if
3196 * the same mailbox is still open. */
3198 fprintf(msg->fp, "X-Mutt-References: %s\n", msgid);
3200 /* (postponement) save the Fcc: using a special X-Mutt- header so that
3201 * it can be picked up when the message is recalled */
3203 fprintf(msg->fp, "X-Mutt-Fcc: %s\n", fcc);
3205 if ((ctx_fcc->mailbox->magic == MUTT_MMDF) || (ctx_fcc->mailbox->magic == MUTT_MBOX))
3206 fprintf(msg->fp, "Status: RO\n");
3208 /* mutt_rfc822_write_header() only writes out a Date: header with
3209 * mode == 0, i.e. _not_ postponement; so write out one ourself */
3211 fprintf(msg->fp, "%s", mutt_date_make_date(buf, sizeof(buf)));
3213 /* (postponement) if the mail is to be signed or encrypted, save this info */
3214 if (((WithCrypto & APPLICATION_PGP) != 0) && post && (e->security & APPLICATION_PGP))
3216 fputs("X-Mutt-PGP: ", msg->fp);
3217 if (e->security & SEC_ENCRYPT)
3218 fputc('E', msg->fp);
3219 if (e->security & SEC_OPPENCRYPT)
3220 fputc('O', msg->fp);
3221 if (e->security & SEC_SIGN)
3223 fputc('S', msg->fp);
3224 if (C_PgpSignAs && *C_PgpSignAs)
3225 fprintf(msg->fp, "<%s>", C_PgpSignAs);
3227 if (e->security & SEC_INLINE)
3228 fputc('I', msg->fp);
3229 fputc('\n', msg->fp);
3232 /* (postponement) if the mail is to be signed or encrypted, save this info */
3233 if (((WithCrypto & APPLICATION_SMIME) != 0) && post && (e->security & APPLICATION_SMIME))
3235 fputs("X-Mutt-SMIME: ", msg->fp);
3236 if (e->security & SEC_ENCRYPT)
3238 fputc('E', msg->fp);
3239 if (C_SmimeEncryptWith && *C_SmimeEncryptWith)
3240 fprintf(msg->fp, "C<%s>", C_SmimeEncryptWith);
3242 if (e->security & SEC_OPPENCRYPT)
3243 fputc('O', msg->fp);
3244 if (e->security & SEC_SIGN)
3246 fputc('S', msg->fp);
3247 if (C_SmimeSignAs && *C_SmimeSignAs)
3248 fprintf(msg->fp, "<%s>", C_SmimeSignAs);
3250 if (e->security & SEC_INLINE)
3251 fputc('I', msg->fp);
3252 fputc('\n', msg->fp);
3256 /* (postponement) if the mail is to be sent through a mixmaster
3257 * chain, save that information */
3259 if (post && !STAILQ_EMPTY(&e->chain))
3261 fputs("X-Mutt-Mix:", msg->fp);
3262 struct ListNode *p = NULL;
3263 STAILQ_FOREACH(p, &e->chain, entries)
3265 fprintf(msg->fp, " %s", (char *) p->data);
3268 fputc('\n', msg->fp);
3277 mutt_write_mime_body(e->content, fp_tmp);
3279 /* make sure the last line ends with a newline. Emacs doesn't ensure this
3280 * will happen, and it can cause problems parsing the mailbox later. */
3281 fseek(fp_tmp, -1, SEEK_END);
3282 if (fgetc(fp_tmp) != '\n')
3284 fseek(fp_tmp, 0, SEEK_END);
3285 fputc('\n', fp_tmp);
3291 mutt_debug(LL_DEBUG1, "%s: write failed.\n", tempfile);
3292 mutt_file_fclose(&fp_tmp);
3294 mx_msg_commit(ctx_fcc->mailbox, msg); /* XXX really? */
3295 mx_msg_close(ctx_fcc->mailbox, &msg);
3296 mx_mbox_close(&ctx_fcc);
3300 /* count the number of lines */
3302 while (fgets(sasha, sizeof(sasha), fp_tmp))
3304 fprintf(msg->fp, "Content-Length: " OFF_T_FMT "\n", (LOFF_T) ftello(fp_tmp));
3305 fprintf(msg->fp, "Lines: %d\n\n", lines);
3307 /* copy the body and clean up */
3309 rc = mutt_file_copy_stream(fp_tmp, msg->fp);
3310 if (fclose(fp_tmp) != 0)
3312 /* if there was an error, leave the temp version */
3318 fputc('\n', msg->fp); /* finish off the header */
3319 rc = mutt_write_mime_body(e->content, msg->fp);
3322 if (mx_msg_commit(ctx_fcc->mailbox, msg) != 0)
3325 *finalpath = mutt_str_strdup(msg->committed_path);
3326 mx_msg_close(ctx_fcc->mailbox, &msg);
3327 mx_mbox_close(&ctx_fcc);
3329 if (!post && need_mailbox_cleanup)
3330 mutt_mailbox_cleanup(path, &st);
3333 set_noconv_flags(e->content, false);
3336 #ifdef RECORD_FOLDER_HOOK
3337 /* We ran a folder hook for the destination mailbox,
3338 * now we run it for the user's current mailbox */
3339 if (Context && Context->mailbox->path)
3340 mutt_folder_hook(Context->mailbox->path, Context->mailbox->desc);