3 * Miscellaneous functions for sending an email
6 * Copyright (C) 1996-2002,2009-2012 Michael R. Elkins <me@mutt.org>
7 * Copyright (C) 2019 Pietro Cerutti <gahr@gahr.ch>
10 * This program is free software: you can redistribute it and/or modify it under
11 * the terms of the GNU General Public License as published by the Free Software
12 * Foundation, either version 2 of the License, or (at your option) any later
15 * This program is distributed in the hope that it will be useful, but WITHOUT
16 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
17 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
20 * You should have received a copy of the GNU General Public License along with
21 * this program. If not, see <http://www.gnu.org/licenses/>.
25 * @page sendlib Miscellaneous functions for sending an email
27 * Miscellaneous functions for sending an email
45 #include "mutt/mutt.h"
46 #include "address/lib.h"
47 #include "config/lib.h"
48 #include "email/lib.h"
59 #include "mutt_parse.h"
60 #include "mutt_window.h"
63 #include "ncrypt/ncrypt.h"
69 #include "nntp/nntp.h"
71 #ifdef HAVE_SYSEXITS_H
77 /* These Config Variables are only used in sendlib.c */
78 bool C_Allow8bit; ///< Config: Allow 8-bit messages, don't use quoted-printable or base64
79 char *C_AttachCharset; ///< Config: When attaching files, use one of these character sets
80 bool C_BounceDelivered; ///< Config: Add 'Delivered-To' to bounced messages
81 bool C_EncodeFrom; ///< Config: Encode 'From ' as 'quote-printable' at the beginning of lines
82 bool C_ForwardDecrypt; ///< Config: Decrypt the message when forwarding it
83 bool C_HiddenHost; ///< Config: Don't use the hostname, just the domain, when generating the message id
84 char *C_Inews; ///< Config: (nntp) External command to post news articles
85 bool C_MimeForwardDecode; ///< Config: Decode the forwarded message before attaching it
86 bool C_MimeSubject; ///< Config: (nntp) Encode the article subject in base64
87 char *C_MimeTypeQueryCommand; ///< Config: External command to determine the MIME type of an attachment
88 bool C_MimeTypeQueryFirst; ///< Config: Run the #C_MimeTypeQueryCommand before the mime.types lookup
89 char *C_Sendmail; ///< Config: External command to send email
90 short C_SendmailWait; ///< Config: Time to wait for sendmail to finish
91 bool C_Use8bitmime; ///< Config: Use 8-bit messages and ESMTP to send messages
92 bool C_UseEnvelopeFrom; ///< Config: Set the envelope sender of the message
93 bool C_UserAgent; ///< Config: Add a 'User-Agent' head to outgoing mail
94 short C_WrapHeaders; ///< Config: Width to wrap headers in outgoing messages
97 * encode_quoted - Encode text as quoted printable
98 * @param fc Cursor for converting a file's encoding
99 * @param fp_out File to store the result
100 * @param istext Is the input text?
102 static void encode_quoted(struct FgetConv *fc, FILE *fp_out, bool istext)
105 char line[77], savechar;
107 while ((c = mutt_ch_fgetconv(fc)) != EOF)
109 /* Wrap the line if needed. */
110 if ((linelen == 76) && ((istext && (c != '\n')) || !istext))
112 /* If the last character is "quoted", then be sure to move all three
113 * characters to the next line. Otherwise, just move the last
115 if (line[linelen - 3] == '=')
117 line[linelen - 3] = 0;
119 fputs("=\n", fp_out);
122 line[1] = line[linelen - 2];
123 line[2] = line[linelen - 1];
128 savechar = line[linelen - 1];
129 line[linelen - 1] = '=';
138 /* Escape lines that begin with/only contain "the message separator". */
139 if ((linelen == 4) && mutt_str_startswith(line, "From", CASE_MATCH))
141 mutt_str_strfcpy(line, "=46rom", sizeof(line));
144 else if ((linelen == 4) && mutt_str_startswith(line, "from", CASE_MATCH))
146 mutt_str_strfcpy(line, "=66rom", sizeof(line));
149 else if ((linelen == 1) && (line[0] == '.'))
151 mutt_str_strfcpy(line, "=2E", sizeof(line));
155 if ((c == '\n') && istext)
157 /* Check to make sure there is no trailing space on this line. */
158 if ((linelen > 0) && ((line[linelen - 1] == ' ') || (line[linelen - 1] == '\t')))
162 sprintf(line + linelen - 1, "=%2.2X", (unsigned char) line[linelen - 1]);
167 int savechar2 = line[linelen - 1];
169 line[linelen - 1] = '=';
172 fprintf(fp_out, "\n=%2.2X", (unsigned char) savechar2);
183 else if ((c != 9) && ((c < 32) || (c > 126) || (c == '=')))
185 /* Check to make sure there is enough room for the quoted character.
186 * If not, wrap to the next line. */
189 line[linelen++] = '=';
195 sprintf(line + linelen, "=%2.2X", (unsigned char) c);
200 /* Don't worry about wrapping the line here. That will happen during
201 * the next iteration when I'll also know what the next character is. */
206 /* Take care of anything left in the buffer */
209 if ((line[linelen - 1] == ' ') || (line[linelen - 1] == '\t'))
211 /* take care of trailing whitespace */
213 sprintf(line + linelen - 1, "=%2.2X", (unsigned char) line[linelen - 1]);
216 savechar = line[linelen - 1];
217 line[linelen - 1] = '=';
221 sprintf(line, "=%2.2X", (unsigned char) savechar);
231 * struct B64Context - Cursor for the Base64 conversion
241 * b64_init - Set up the base64 conversion
242 * @param bctx Cursor for the base64 conversion
245 static int b64_init(struct B64Context *bctx)
247 memset(bctx->buffer, '\0', sizeof(bctx->buffer));
255 * b64_flush - Save the bytes to the file
256 * @param bctx Cursor for the base64 conversion
257 * @param fp_out File to save the output
259 static void b64_flush(struct B64Context *bctx, FILE *fp_out)
261 /* for some reasons, mutt_b64_encode expects the
262 * output buffer to be larger than 10B */
269 if (bctx->linelen >= 72)
275 /* ret should always be equal to 4 here, because bctx->size
276 * is a value between 1 and 3 (included), but let's not hardcode it
277 * and prefer the return value of the function */
278 ret = mutt_b64_encode(bctx->buffer, bctx->size, encoded, sizeof(encoded));
279 for (size_t i = 0; i < ret; i++)
281 fputc(encoded[i], fp_out);
289 * b64_putc - Base64-encode one character
290 * @param bctx Cursor for the base64 conversion
291 * @param c Character to encode
292 * @param fp_out File to save the output
294 static void b64_putc(struct B64Context *bctx, char c, FILE *fp_out)
297 b64_flush(bctx, fp_out);
299 bctx->buffer[bctx->size++] = c;
303 * encode_base64 - Base64-encode some data
304 * @param fc Cursor for converting a file's encoding
305 * @param fp_out File to store the result
306 * @param istext Is the input text?
308 static void encode_base64(struct FgetConv *fc, FILE *fp_out, int istext)
310 struct B64Context bctx;
315 while ((ch = mutt_ch_fgetconv(fc)) != EOF)
322 if (istext && (ch == '\n') && (ch1 != '\r'))
323 b64_putc(&bctx, '\r', fp_out);
324 b64_putc(&bctx, ch, fp_out);
327 b64_flush(&bctx, fp_out);
332 * encode_8bit - Write the data as raw 8-bit data
333 * @param fc Cursor for converting a file's encoding
334 * @param fp_out File to store the result
336 static void encode_8bit(struct FgetConv *fc, FILE *fp_out)
340 while ((ch = mutt_ch_fgetconv(fc)) != EOF)
352 * mutt_write_mime_header - Create a MIME header
354 * @param fp File to write to
358 int mutt_write_mime_header(struct Body *a, FILE *fp)
365 char buf[256] = { 0 };
367 fprintf(fp, "Content-Type: %s/%s", TYPE(a), a->subtype);
369 if (!TAILQ_EMPTY(&a->parameter))
371 len = 25 + mutt_str_strlen(a->subtype); /* approximate len. of content-type */
373 struct Parameter *np = NULL;
374 TAILQ_FOREACH(np, &a->parameter, entries)
376 if (!np->attribute || !np->value)
379 struct ParameterList param_conts = rfc2231_encode_string(np->attribute, np->value);
380 struct Parameter *cont = NULL;
381 TAILQ_FOREACH(cont, ¶m_conts, entries)
386 mutt_addr_cat(buf, sizeof(buf), cont->value, MimeSpecials);
388 /* Dirty hack to make messages readable by Outlook Express
389 * for the Mac: force quotes around the boundary parameter
390 * even when they aren't needed.
392 if (!mutt_str_strcasecmp(cont->attribute, "boundary") &&
393 !mutt_str_strcmp(buf, cont->value))
394 snprintf(buf, sizeof(buf), "\"%s\"", cont->value);
396 tmplen = mutt_str_strlen(buf) + mutt_str_strlen(cont->attribute) + 1;
397 if (len + tmplen + 2 > 76)
408 fprintf(fp, "%s=%s", cont->attribute, buf);
411 mutt_param_free(¶m_conts);
418 fprintf(fp, "Content-Language: %s\n", a->language);
421 fprintf(fp, "Content-Description: %s\n", a->description);
423 if (a->disposition != DISP_NONE)
425 const char *dispstr[] = { "inline", "attachment", "form-data" };
427 if (a->disposition < sizeof(dispstr) / sizeof(char *))
429 fprintf(fp, "Content-Disposition: %s", dispstr[a->disposition]);
430 len = 21 + mutt_str_strlen(dispstr[a->disposition]);
432 if (a->use_disp && (a->disposition != DISP_INLINE))
434 char *fn = a->d_filename;
440 /* Strip off the leading path... */
441 char *t = strrchr(fn, '/');
447 struct ParameterList param_conts = rfc2231_encode_string("filename", t);
448 struct Parameter *cont = NULL;
449 TAILQ_FOREACH(cont, ¶m_conts, entries)
453 mutt_addr_cat(buf, sizeof(buf), cont->value, MimeSpecials);
455 tmplen = mutt_str_strlen(buf) + mutt_str_strlen(cont->attribute) + 1;
456 if (len + tmplen + 2 > 76)
467 fprintf(fp, "%s=%s", cont->attribute, buf);
470 mutt_param_free(¶m_conts);
478 mutt_debug(LL_DEBUG1, "ERROR: invalid content-disposition %d\n", a->disposition);
482 if (a->encoding != ENC_7BIT)
483 fprintf(fp, "Content-Transfer-Encoding: %s\n", ENCODING(a->encoding));
485 if (C_CryptProtectedHeadersWrite && a->mime_headers)
486 mutt_rfc822_write_header(fp, a->mime_headers, NULL, MUTT_WRITE_HEADER_MIME, false, false);
488 /* Do NOT add the terminator here!!! */
489 return ferror(fp) ? -1 : 0;
493 * write_as_text_part - Should the Body be written as a text MIME part
494 * @param b Email to examine
495 * @retval true If the Body should be written as text
497 static bool write_as_text_part(struct Body *b)
499 return mutt_is_text_part(b) ||
500 (((WithCrypto & APPLICATION_PGP) != 0) && mutt_is_application_pgp(b));
504 * mutt_write_mime_body - Write a MIME part
505 * @param a Body to use
506 * @param fp File to write to
510 int mutt_write_mime_body(struct Body *a, FILE *fp)
513 struct FgetConv *fc = NULL;
515 if (a->type == TYPE_MULTIPART)
517 /* First, find the boundary to use */
518 const char *p = mutt_param_get(&a->parameter, "boundary");
521 mutt_debug(LL_DEBUG1, "no boundary parameter found\n");
522 mutt_error(_("No boundary parameter found [report this error]"));
526 mutt_str_strfcpy(boundary, p, sizeof(boundary));
528 for (struct Body *t = a->parts; t; t = t->next)
530 fprintf(fp, "\n--%s\n", boundary);
531 if (mutt_write_mime_header(t, fp) == -1)
534 if (mutt_write_mime_body(t, fp) == -1)
537 fprintf(fp, "\n--%s--\n", boundary);
538 return ferror(fp) ? -1 : 0;
541 /* This is pretty gross, but it's the best solution for now... */
542 if (((WithCrypto & APPLICATION_PGP) != 0) && (a->type == TYPE_APPLICATION) &&
543 (mutt_str_strcmp(a->subtype, "pgp-encrypted") == 0))
545 fputs("Version: 1\n", fp);
549 fp_in = fopen(a->filename, "r");
552 mutt_debug(LL_DEBUG1, "%s no longer exists\n", a->filename);
553 mutt_error(_("%s no longer exists"), a->filename);
557 if ((a->type == TYPE_TEXT) && (!a->noconv))
559 char send_charset[128];
560 fc = mutt_ch_fgetconv_open(
562 mutt_body_get_charset(a, send_charset, sizeof(send_charset)), 0);
565 fc = mutt_ch_fgetconv_open(fp_in, 0, 0, 0);
567 mutt_sig_allow_interrupt(1);
568 if (a->encoding == ENC_QUOTED_PRINTABLE)
569 encode_quoted(fc, fp, write_as_text_part(a));
570 else if (a->encoding == ENC_BASE64)
571 encode_base64(fc, fp, write_as_text_part(a));
572 else if ((a->type == TYPE_TEXT) && (!a->noconv))
575 mutt_file_copy_stream(fp_in, fp);
576 mutt_sig_allow_interrupt(0);
578 mutt_ch_fgetconv_close(&fc);
579 mutt_file_fclose(&fp_in);
586 return ferror(fp) ? -1 : 0;
590 * mutt_generate_boundary - Create a unique boundary id for a MIME part
591 * @param parm MIME part
593 void mutt_generate_boundary(struct ParameterList *parm)
595 char rs[MUTT_RANDTAG_LEN + 1];
597 mutt_rand_base32(rs, sizeof(rs) - 1);
598 rs[MUTT_RANDTAG_LEN] = 0;
599 mutt_param_set(parm, "boundary", rs);
603 * struct ContentState - Info about the body of an email
615 * update_content_info - Cache some info about an email
616 * @param info Info about an Attachment
617 * @param s Info about the Body of an email
618 * @param buf Buffer for the result
619 * @param buflen Length of the buffer
621 static void update_content_info(struct Content *info, struct ContentState *s,
622 char *buf, size_t buflen)
625 int whitespace = s->whitespace;
627 int linelen = s->linelen;
628 bool was_cr = s->was_cr;
630 if (!buf) /* This signals EOF */
634 if (linelen > info->linemax)
635 info->linemax = linelen;
640 for (; buflen; buf++, buflen--)
657 if (linelen > info->linemax)
658 info->linemax = linelen;
674 if (linelen > info->linemax)
675 info->linemax = linelen;
689 else if ((ch == '\t') || (ch == '\f'))
699 else if ((ch < 32) || (ch == 127))
705 if ((ch == 'F') || (ch == 'f'))
716 if ((linelen == 2) && (ch != 'r'))
718 else if ((linelen == 3) && (ch != 'o'))
720 else if (linelen == 4)
734 if ((ch != ' ') && (ch != '\t'))
739 s->whitespace = whitespace;
741 s->linelen = linelen;
746 * convert_file_to - Change the encoding of a file
747 * @param[in] fp File to convert
748 * @param[in] fromcode Original encoding
749 * @param[in] ncodes Number of target encodings
750 * @param[in] tocodes List of target encodings
751 * @param[out] tocode Chosen encoding
752 * @param[in] info Encoding information
753 * @retval -1 Error, no conversion was possible
754 * @retval >0 Success, number of bytes converted
756 * Find the best charset conversion of the file from fromcode into one
757 * of the tocodes. If successful, set *tocode and Content *info and
758 * return the number of characters converted inexactly.
760 * We convert via UTF-8 in order to avoid the condition -1(EINVAL),
761 * which would otherwise prevent us from knowing the number of inexact
762 * conversions. Where the candidate target charset is UTF-8 we avoid
763 * doing the second conversion because iconv_open("UTF-8", "UTF-8")
764 * fails with some libraries.
766 * We assume that the output from iconv is never more than 4 times as
767 * long as the input for any pair of charsets we might be interested
770 static size_t convert_file_to(FILE *fp, const char *fromcode, int ncodes,
771 const char **tocodes, int *tocode, struct Content *info)
773 char bufi[256], bufu[512], bufo[4 * sizeof(bufi)];
776 const iconv_t cd1 = mutt_ch_iconv_open("utf-8", fromcode, 0);
777 if (cd1 == (iconv_t)(-1))
780 iconv_t *cd = mutt_mem_calloc(ncodes, sizeof(iconv_t));
781 size_t *score = mutt_mem_calloc(ncodes, sizeof(size_t));
782 struct ContentState *states = mutt_mem_calloc(ncodes, sizeof(struct ContentState));
783 struct Content *infos = mutt_mem_calloc(ncodes, sizeof(struct Content));
785 for (int i = 0; i < ncodes; i++)
787 if (mutt_str_strcasecmp(tocodes[i], "utf-8") != 0)
788 cd[i] = mutt_ch_iconv_open(tocodes[i], "utf-8", 0);
791 /* Special case for conversion to UTF-8 */
792 cd[i] = (iconv_t)(-1);
793 score[i] = (size_t)(-1);
801 /* Try to fill input buffer */
802 size_t n = fread(bufi + ibl, 1, sizeof(bufi) - ibl, fp);
805 /* Convert to UTF-8 */
806 const char *ib = bufi;
808 size_t obl = sizeof(bufu);
809 n = iconv(cd1, (ICONV_CONST char **) ((ibl != 0) ? &ib : 0), &ibl, &ob, &obl);
810 /* assert(n == (size_t)(-1) || !n); */
811 if ((n == (size_t)(-1)) && (((errno != EINVAL) && (errno != E2BIG)) || (ib == bufi)))
813 /* assert(errno == EILSEQ || (errno == EINVAL && ib == bufi && ibl < sizeof(bufi))); */
817 const size_t ubl1 = ob - bufu;
819 /* Convert from UTF-8 */
820 for (int i = 0; i < ncodes; i++)
822 if ((cd[i] != (iconv_t)(-1)) && (score[i] != (size_t)(-1)))
824 const char *ub = bufu;
828 n = iconv(cd[i], (ICONV_CONST char **) ((ibl || ubl) ? &ub : 0), &ubl, &ob, &obl);
829 if (n == (size_t)(-1))
831 /* assert(errno == E2BIG || (BUGGY_ICONV && (errno == EILSEQ || errno == ENOENT))); */
832 score[i] = (size_t)(-1);
837 update_content_info(&infos[i], &states[i], bufo, ob - bufo);
840 else if ((cd[i] == (iconv_t)(-1)) && (score[i] == (size_t)(-1)))
842 /* Special case for conversion to UTF-8 */
843 update_content_info(&infos[i], &states[i], bufu, ubl1);
849 /* Save unused input */
850 memmove(bufi, ib, ibl);
852 else if (!ubl1 && (ib < bufi + sizeof(bufi)))
861 /* Find best score */
863 for (int i = 0; i < ncodes; i++)
865 if ((cd[i] == (iconv_t)(-1)) && (score[i] == (size_t)(-1)))
867 /* Special case for conversion to UTF-8 */
872 else if ((cd[i] == (iconv_t)(-1)) || (score[i] == (size_t)(-1)))
874 else if ((ret == (size_t)(-1)) || (score[i] < ret))
882 if (ret != (size_t)(-1))
884 memcpy(info, &infos[*tocode], sizeof(struct Content));
885 update_content_info(info, &states[*tocode], 0, 0); /* EOF */
889 for (int i = 0; i < ncodes; i++)
890 if (cd[i] != (iconv_t)(-1))
903 * convert_file_from_to - Convert a file between encodings
904 * @param[in] fp File to read from
905 * @param[in] fromcodes Charsets to try converting FROM
906 * @param[in] tocodes Charsets to try converting TO
907 * @param[out] fromcode From charset selected
908 * @param[out] tocode To charset selected
909 * @param[out] info Info about the file
910 * @retval num Characters converted
911 * @retval -1 Error (as a size_t)
913 * Find the first of the fromcodes that gives a valid conversion and the best
914 * charset conversion of the file into one of the tocodes. If successful, set
915 * *fromcode and *tocode to dynamically allocated strings, set Content *info,
916 * and return the number of characters converted inexactly. If no conversion
917 * was possible, return -1.
919 * Both fromcodes and tocodes may be colon-separated lists of charsets.
920 * However, if fromcode is zero then fromcodes is assumed to be the name of a
921 * single charset even if it contains a colon.
923 static size_t convert_file_from_to(FILE *fp, const char *fromcodes, const char *tocodes,
924 char **fromcode, char **tocode, struct Content *info)
928 const char *c = NULL, *c1 = NULL;
932 /* Count the tocodes */
934 for (c = tocodes; c; c = c1 ? c1 + 1 : 0)
943 tcode = mutt_mem_malloc(ncodes * sizeof(char *));
944 for (c = tocodes, i = 0; c; c = c1 ? c1 + 1 : 0, i++)
949 tcode[i] = mutt_str_substr_dup(c, c1);
955 /* Try each fromcode in turn */
956 for (c = fromcodes; c; c = c1 ? c1 + 1 : 0)
961 fcode = mutt_str_substr_dup(c, c1);
963 ret = convert_file_to(fp, fcode, ncodes, (const char **) tcode, &cn, info);
964 if (ret != (size_t)(-1))
976 /* There is only one fromcode */
977 ret = convert_file_to(fp, fromcodes, ncodes, (const char **) tcode, &cn, info);
978 if (ret != (size_t)(-1))
986 for (i = 0; i < ncodes; i++)
995 * mutt_get_content_info - Analyze file to determine MIME encoding to use
996 * @param fname File to examine
997 * @param b Body to update
998 * @retval ptr Newly allocated Content
1000 * Also set the body charset, sometimes, or not.
1002 struct Content *mutt_get_content_info(const char *fname, struct Body *b)
1004 struct Content *info = NULL;
1005 struct ContentState state = { 0 };
1007 char *fromcode = NULL;
1008 char *tocode = NULL;
1015 fname = b->filename;
1017 if (stat(fname, &sb) == -1)
1019 mutt_error(_("Can't stat %s: %s"), fname, strerror(errno));
1023 if (!S_ISREG(sb.st_mode))
1025 mutt_error(_("%s isn't a regular file"), fname);
1029 fp = fopen(fname, "r");
1032 mutt_debug(LL_DEBUG1, "%s: %s (errno %d)\n", fname, strerror(errno), errno);
1036 info = mutt_mem_calloc(1, sizeof(struct Content));
1038 if (b && (b->type == TYPE_TEXT) && (!b->noconv && !b->force_charset))
1040 char *chs = mutt_param_get(&b->parameter, "charset");
1041 char *fchs = b->use_disp ? (C_AttachCharset ? C_AttachCharset : C_Charset) : C_Charset;
1042 if (C_Charset && (chs || C_SendCharset) &&
1043 (convert_file_from_to(fp, fchs, chs ? chs : C_SendCharset, &fromcode,
1044 &tocode, info) != (size_t)(-1)))
1049 mutt_ch_canonical_charset(chsbuf, sizeof(chsbuf), tocode);
1050 mutt_param_set(&b->parameter, "charset", chsbuf);
1053 b->charset = fromcode;
1055 mutt_file_fclose(&fp);
1061 while ((r = fread(buf, 1, sizeof(buf), fp)))
1062 update_content_info(info, &state, buf, r);
1063 update_content_info(info, &state, 0, 0);
1065 mutt_file_fclose(&fp);
1067 if (b && (b->type == TYPE_TEXT) && (!b->noconv && !b->force_charset))
1069 mutt_param_set(&b->parameter, "charset",
1072 C_Charset && !mutt_ch_is_us_ascii(C_Charset) ? C_Charset : "unknown-8bit"));
1079 * mutt_lookup_mime_type - Find the MIME type for an attachment
1080 * @param att Email with attachment
1081 * @param path Path to attachment
1082 * @retval num MIME type, e.g. #TYPE_IMAGE
1084 * Given a file at 'path', see if there is a registered MIME type.
1085 * Returns the major MIME type, and copies the subtype to "d". First look
1086 * in a system mime.types if we can find one, then look for ~/.mime.types.
1087 * The longest match is used so that we can match 'ps.gz' when 'gz' also
1090 enum ContentType mutt_lookup_mime_type(struct Body *att, const char *path)
1093 char *p = NULL, *q = NULL, *ct = NULL;
1095 char subtype[256] = { 0 };
1096 char xtype[256] = { 0 };
1097 int sze, cur_sze = 0;
1098 bool found_mimetypes = false;
1099 enum ContentType type = TYPE_OTHER;
1101 int szf = mutt_str_strlen(path);
1103 for (int count = 0; count < 4; count++)
1105 /* can't use strtok() because we use it in an inner loop below, so use
1106 * a switch statement here instead. */
1109 /* last file with last entry to match wins type/xtype */
1111 /* check default unix mimetypes location first */
1112 mutt_str_strfcpy(buf, "/etc/mime.types", sizeof(buf));
1115 mutt_str_strfcpy(buf, SYSCONFDIR "/mime.types", sizeof(buf));
1118 mutt_str_strfcpy(buf, PKGDATADIR "/mime.types", sizeof(buf));
1121 snprintf(buf, sizeof(buf), "%s/.mime.types", NONULL(HomeDir));
1124 mutt_debug(LL_DEBUG1, "Internal error, count = %d\n", count);
1125 goto bye; /* shouldn't happen */
1128 fp = fopen(buf, "r");
1131 found_mimetypes = true;
1133 while (fgets(buf, sizeof(buf) - 1, fp))
1135 /* weed out any comments */
1136 p = strchr(buf, '#');
1140 /* remove any leading space. */
1144 /* position on the next field in this line */
1145 p = strpbrk(ct, " \t");
1151 /* cycle through the file extensions */
1152 while ((p = strtok(p, " \t\n")))
1154 sze = mutt_str_strlen(p);
1155 if ((sze > cur_sze) && (szf >= sze) &&
1156 ((mutt_str_strcasecmp(path + szf - sze, p) == 0) ||
1157 (mutt_str_strcasecmp(path + szf - sze, p) == 0)) &&
1158 ((szf == sze) || (path[szf - sze - 1] == '.')))
1160 /* get the content-type */
1162 p = strchr(ct, '/');
1165 /* malformed line, just skip it. */
1170 for (q = p; *q && !IS_SPACE(*q); q++)
1173 mutt_str_substr_copy(p, q, subtype, sizeof(subtype));
1175 type = mutt_check_mime_type(ct);
1176 if (type == TYPE_OTHER)
1177 mutt_str_strfcpy(xtype, ct, sizeof(xtype));
1184 mutt_file_fclose(&fp);
1190 /* no mime.types file found */
1191 if (!found_mimetypes)
1193 mutt_error(_("Could not find any mime.types file."));
1196 if ((type != TYPE_OTHER) || (*xtype != '\0'))
1199 mutt_str_replace(&att->subtype, subtype);
1200 mutt_str_replace(&att->xtype, xtype);
1207 * transform_to_7bit - Convert MIME parts to 7-bit
1208 * @param a Body of the email
1209 * @param fp_in File to read
1211 static void transform_to_7bit(struct Body *a, FILE *fp_in)
1214 struct State s = { 0 };
1217 for (; a; a = a->next)
1219 if (a->type == TYPE_MULTIPART)
1221 if (a->encoding != ENC_7BIT)
1222 a->encoding = ENC_7BIT;
1224 transform_to_7bit(a->parts, fp_in);
1226 else if (mutt_is_message_type(a->type, a->subtype))
1228 mutt_message_to_7bit(a, fp_in);
1233 a->force_charset = true;
1235 mutt_mktemp(buf, sizeof(buf));
1236 s.fp_out = mutt_file_fopen(buf, "w");
1239 mutt_perror("fopen");
1243 mutt_decode_attachment(a, &s);
1244 mutt_file_fclose(&s.fp_out);
1245 FREE(&a->d_filename);
1246 a->d_filename = a->filename;
1247 a->filename = mutt_str_strdup(buf);
1249 if (stat(a->filename, &sb) == -1)
1251 mutt_perror("stat");
1254 a->length = sb.st_size;
1256 mutt_update_encoding(a);
1257 if (a->encoding == ENC_8BIT)
1258 a->encoding = ENC_QUOTED_PRINTABLE;
1259 else if (a->encoding == ENC_BINARY)
1260 a->encoding = ENC_BASE64;
1266 * mutt_message_to_7bit - Convert an email's MIME parts to 7-bit
1267 * @param a Body of the email
1268 * @param fp File to read (OPTIONAL)
1270 void mutt_message_to_7bit(struct Body *a, FILE *fp)
1272 char temp[PATH_MAX];
1275 FILE *fp_out = NULL;
1278 if (!a->filename && fp)
1280 else if (!a->filename || !(fp_in = fopen(a->filename, "r")))
1282 mutt_error(_("Could not open %s"), a->filename ? a->filename : "(null)");
1288 if (stat(a->filename, &sb) == -1)
1290 mutt_perror("stat");
1291 mutt_file_fclose(&fp_in);
1293 a->length = sb.st_size;
1296 mutt_mktemp(temp, sizeof(temp));
1297 fp_out = mutt_file_fopen(temp, "w+");
1300 mutt_perror("fopen");
1307 fseeko(fp_in, a->offset, SEEK_SET);
1308 a->parts = mutt_rfc822_parse_message(fp_in, a);
1310 transform_to_7bit(a->parts, fp_in);
1312 mutt_copy_hdr(fp_in, fp_out, a->offset, a->offset + a->length,
1313 CH_MIME | CH_NONEWLINE | CH_XMIT, NULL);
1315 fputs("MIME-Version: 1.0\n", fp_out);
1316 mutt_write_mime_header(a->parts, fp_out);
1317 fputc('\n', fp_out);
1318 mutt_write_mime_body(a->parts, fp_out);
1323 if (fp_in && (fp_in != fp))
1324 mutt_file_fclose(&fp_in);
1326 mutt_file_fclose(&fp_out);
1330 a->encoding = ENC_7BIT;
1331 FREE(&a->d_filename);
1332 a->d_filename = a->filename;
1333 if (a->filename && a->unlink)
1334 unlink(a->filename);
1335 a->filename = mutt_str_strdup(temp);
1337 if (stat(a->filename, &sb) == -1)
1339 mutt_perror("stat");
1342 a->length = sb.st_size;
1343 mutt_body_free(&a->parts);
1344 a->email->content = NULL;
1348 * set_encoding - determine which Content-Transfer-Encoding to use
1349 * @param[in] b Body of email
1350 * @param[out] info Info about the email
1352 static void set_encoding(struct Body *b, struct Content *info)
1354 if (b->type == TYPE_TEXT)
1356 char send_charset[128];
1357 char *chsname = mutt_body_get_charset(b, send_charset, sizeof(send_charset));
1358 if ((info->lobin && !mutt_str_startswith(chsname, "iso-2022", CASE_IGNORE)) ||
1359 (info->linemax > 990) || (info->from && C_EncodeFrom))
1361 b->encoding = ENC_QUOTED_PRINTABLE;
1363 else if (info->hibin)
1365 b->encoding = C_Allow8bit ? ENC_8BIT : ENC_QUOTED_PRINTABLE;
1369 b->encoding = ENC_7BIT;
1372 else if ((b->type == TYPE_MESSAGE) || (b->type == TYPE_MULTIPART))
1374 if (info->lobin || info->hibin)
1376 if (C_Allow8bit && !info->lobin)
1377 b->encoding = ENC_8BIT;
1379 mutt_message_to_7bit(b, NULL);
1382 b->encoding = ENC_7BIT;
1384 else if ((b->type == TYPE_APPLICATION) &&
1385 (mutt_str_strcasecmp(b->subtype, "pgp-keys") == 0))
1387 b->encoding = ENC_7BIT;
1391 /* Determine which encoding is smaller */
1392 if (1.33 * (float) (info->lobin + info->hibin + info->ascii) <
1393 3.0 * (float) (info->lobin + info->hibin) + (float) info->ascii)
1395 b->encoding = ENC_BASE64;
1399 b->encoding = ENC_QUOTED_PRINTABLE;
1405 * mutt_stamp_attachment - Timestamp an Attachment
1406 * @param a Attachment
1408 void mutt_stamp_attachment(struct Body *a)
1410 a->stamp = time(NULL);
1414 * mutt_body_get_charset - Get a body's character set
1415 * @param b Body to examine
1416 * @param buf Buffer for the result
1417 * @param buflen Length of the buffer
1418 * @retval ptr Buffer containing character set
1419 * @retval NULL On error, or if not a text type
1421 char *mutt_body_get_charset(struct Body *b, char *buf, size_t buflen)
1425 if (b && (b->type != TYPE_TEXT))
1429 p = mutt_param_get(&b->parameter, "charset");
1432 mutt_ch_canonical_charset(buf, buflen, p);
1434 mutt_str_strfcpy(buf, "us-ascii", buflen);
1440 * mutt_update_encoding - Update the encoding type
1441 * @param a Body to update
1443 * Assumes called from send mode where Body->filename points to actual file
1445 void mutt_update_encoding(struct Body *a)
1447 struct Content *info = NULL;
1450 /* override noconv when it's us-ascii */
1451 if (mutt_ch_is_us_ascii(mutt_body_get_charset(a, chsbuf, sizeof(chsbuf))))
1454 if (!a->force_charset && !a->noconv)
1455 mutt_param_delete(&a->parameter, "charset");
1457 info = mutt_get_content_info(a->filename, a);
1461 set_encoding(a, info);
1462 mutt_stamp_attachment(a);
1469 * mutt_make_message_attach - Create a message attachment
1472 * @param attach_msg true if attaching a message
1473 * @retval ptr Newly allocated Body
1474 * @retval NULL Error
1476 struct Body *mutt_make_message_attach(struct Mailbox *m, struct Email *e, bool attach_msg)
1479 struct Body *body = NULL;
1481 CopyMessageFlags cmflags;
1482 SecurityFlags pgp = WithCrypto ? e->security : SEC_NO_FLAGS;
1486 if ((C_MimeForwardDecode || C_ForwardDecrypt) && (e->security & SEC_ENCRYPT))
1488 if (!crypt_valid_passphrase(e->security))
1493 mutt_mktemp(buf, sizeof(buf));
1494 fp = mutt_file_fopen(buf, "w+");
1498 body = mutt_body_new();
1499 body->type = TYPE_MESSAGE;
1500 body->subtype = mutt_str_strdup("rfc822");
1501 body->filename = mutt_str_strdup(buf);
1502 body->unlink = true;
1503 body->use_disp = false;
1504 body->disposition = DISP_INLINE;
1505 body->noconv = true;
1507 mutt_parse_mime_message(m, e);
1509 CopyHeaderFlags chflags = CH_XMIT;
1510 cmflags = MUTT_CM_NO_FLAGS;
1512 /* If we are attaching a message, ignore C_MimeForwardDecode */
1513 if (!attach_msg && C_MimeForwardDecode)
1515 chflags |= CH_MIME | CH_TXTPLAIN;
1516 cmflags = MUTT_CM_DECODE | MUTT_CM_CHARCONV;
1517 if (WithCrypto & APPLICATION_PGP)
1518 pgp &= ~PGP_ENCRYPT;
1519 if (WithCrypto & APPLICATION_SMIME)
1520 pgp &= ~SMIME_ENCRYPT;
1522 else if ((WithCrypto != 0) && C_ForwardDecrypt && (e->security & SEC_ENCRYPT))
1524 if (((WithCrypto & APPLICATION_PGP) != 0) && mutt_is_multipart_encrypted(e->content))
1526 chflags |= CH_MIME | CH_NONEWLINE;
1527 cmflags = MUTT_CM_DECODE_PGP;
1528 pgp &= ~PGP_ENCRYPT;
1530 else if (((WithCrypto & APPLICATION_PGP) != 0) &&
1531 ((mutt_is_application_pgp(e->content) & PGP_ENCRYPT) == PGP_ENCRYPT))
1533 chflags |= CH_MIME | CH_TXTPLAIN;
1534 cmflags = MUTT_CM_DECODE | MUTT_CM_CHARCONV;
1535 pgp &= ~PGP_ENCRYPT;
1537 else if (((WithCrypto & APPLICATION_SMIME) != 0) &&
1538 ((mutt_is_application_smime(e->content) & SMIME_ENCRYPT) == SMIME_ENCRYPT))
1540 chflags |= CH_MIME | CH_TXTPLAIN;
1541 cmflags = MUTT_CM_DECODE | MUTT_CM_CHARCONV;
1542 pgp &= ~SMIME_ENCRYPT;
1546 mutt_copy_message_ctx(fp, m, e, cmflags, chflags);
1551 body->email = mutt_email_new();
1552 body->email->offset = 0;
1553 /* we don't need the user headers here */
1554 body->email->env = mutt_rfc822_read_header(fp, body->email, false, false);
1556 body->email->security = pgp;
1557 mutt_update_encoding(body);
1558 body->parts = body->email->content;
1560 mutt_file_fclose(&fp);
1566 * run_mime_type_query - Run an external command to determine the MIME type
1567 * @param att Attachment
1569 * The command in $mime_type_query_command is run.
1571 static void run_mime_type_query(struct Body *att)
1573 FILE *fp = NULL, *fp_err = NULL;
1578 struct Buffer *cmd = mutt_buffer_pool_get();
1580 mutt_buffer_file_expand_fmt_quote(cmd, C_MimeTypeQueryCommand, att->filename);
1582 pid = mutt_create_filter(mutt_b2s(cmd), NULL, &fp, &fp_err);
1585 mutt_error(_("Error running \"%s\""), mutt_b2s(cmd));
1586 mutt_buffer_pool_release(&cmd);
1589 mutt_buffer_pool_release(&cmd);
1591 buf = mutt_file_read_line(buf, &buflen, fp, &dummy, 0);
1594 if (strchr(buf, '/'))
1595 mutt_parse_content_type(buf, att);
1599 mutt_file_fclose(&fp);
1600 mutt_file_fclose(&fp_err);
1601 mutt_wait_filter(pid);
1605 * mutt_make_file_attach - Create a file attachment
1606 * @param path File to attach
1607 * @retval ptr Newly allocated Body
1608 * @retval NULL Error
1610 struct Body *mutt_make_file_attach(const char *path)
1612 struct Body *att = mutt_body_new();
1613 att->filename = mutt_str_strdup(path);
1615 if (C_MimeTypeQueryCommand && C_MimeTypeQueryFirst)
1616 run_mime_type_query(att);
1618 /* Attempt to determine the appropriate content-type based on the filename
1621 mutt_lookup_mime_type(att, path);
1623 if (!att->subtype && C_MimeTypeQueryCommand && !C_MimeTypeQueryFirst)
1625 run_mime_type_query(att);
1628 struct Content *info = mutt_get_content_info(path, att);
1631 mutt_body_free(&att);
1637 if ((info->nulbin == 0) &&
1638 ((info->lobin == 0) || ((info->lobin + info->hibin + info->ascii) / info->lobin >= 10)))
1640 /* Statistically speaking, there should be more than 10% "lobin"
1641 * chars if this is really a binary file... */
1642 att->type = TYPE_TEXT;
1643 att->subtype = mutt_str_strdup("plain");
1647 att->type = TYPE_APPLICATION;
1648 att->subtype = mutt_str_strdup("octet-stream");
1653 mutt_update_encoding(att);
1658 * get_toplevel_encoding - Find the most restrictive encoding type
1659 * @param a Body to examine
1660 * @retval num Encoding type, e.g. #ENC_7BIT
1662 static int get_toplevel_encoding(struct Body *a)
1666 for (; a; a = a->next)
1668 if (a->encoding == ENC_BINARY)
1670 else if (a->encoding == ENC_8BIT)
1678 * check_boundary - check for duplicate boundary
1679 * @param boundary Boundary to look for
1680 * @param b Body parts to check
1681 * @retval true if duplicate found
1683 static bool check_boundary(const char *boundary, struct Body *b)
1687 if (b->parts && check_boundary(boundary, b->parts))
1690 if (b->next && check_boundary(boundary, b->next))
1693 p = mutt_param_get(&b->parameter, "boundary");
1694 if (p && (mutt_str_strcmp(p, boundary) == 0))
1702 * mutt_make_multipart - Create a multipart email
1703 * @param b Body of email to start
1704 * @retval ptr Newly allocated Body
1706 struct Body *mutt_make_multipart(struct Body *b)
1708 struct Body *new_body = mutt_body_new();
1709 new_body->type = TYPE_MULTIPART;
1710 new_body->subtype = mutt_str_strdup("mixed");
1711 new_body->encoding = get_toplevel_encoding(b);
1714 mutt_generate_boundary(&new_body->parameter);
1715 if (check_boundary(mutt_param_get(&new_body->parameter, "boundary"), b))
1716 mutt_param_delete(&new_body->parameter, "boundary");
1717 } while (!mutt_param_get(&new_body->parameter, "boundary"));
1718 new_body->use_disp = false;
1719 new_body->disposition = DISP_INLINE;
1720 new_body->parts = b;
1726 * mutt_remove_multipart - Extract the multipart body if it exists
1727 * @param b Body to alter
1728 * @retval ptr The parts of the Body
1730 * @note The original Body is freed
1732 struct Body *mutt_remove_multipart(struct Body *b)
1734 struct Body *t = NULL;
1747 * mutt_write_addrlist - wrapper around mutt_write_address()
1748 * @param al Address list
1749 * @param fp File to write to
1750 * @param linelen Line length to use
1751 * @param display True if these addresses will be displayed to the user
1753 * So we can handle very large recipient lists without needing a huge temporary
1756 void mutt_write_addrlist(struct AddressList *al, FILE *fp, int linelen, bool display)
1761 struct Address *a = NULL;
1762 TAILQ_FOREACH(a, al, entries)
1765 mutt_addr_write(buf, sizeof(buf), a, display);
1766 size_t len = mutt_str_strlen(buf);
1767 if (count && (linelen + len > 74))
1770 linelen = len + 8; /* tab is usually about 8 spaces... */
1774 if (count && a->mailbox)
1782 struct Address *next = TAILQ_NEXT(a, entries);
1783 if (!a->group && next && next->mailbox)
1794 * mutt_write_references - Add the message references to a list
1795 * @param r String List of references
1796 * @param fp File to write to
1797 * @param trim Trim the list to at most this many items
1799 * Write the list in reverse because they are stored in reverse order when
1800 * parsed to speed up threading.
1802 void mutt_write_references(const struct ListHead *r, FILE *fp, size_t trim)
1804 struct ListNode *np = NULL;
1807 STAILQ_FOREACH(np, r, entries)
1809 if (++length == trim)
1813 struct ListNode **ref = mutt_mem_calloc(length, sizeof(struct ListNode *));
1815 // store in reverse order
1816 size_t tmp = length;
1817 STAILQ_FOREACH(np, r, entries)
1824 for (size_t i = 0; i < length; i++)
1827 fputs(ref[i]->data, fp);
1828 if (i != length - 1)
1836 * print_val - Add pieces to an email header, wrapping where necessary
1837 * @param fp File to write to
1838 * @param pfx Prefix for headers
1839 * @param value Text to be added
1840 * @param chflags Flags, see #CopyHeaderFlags
1841 * @param col Column that this text starts at
1843 * @retval -1 Failure
1845 static int print_val(FILE *fp, const char *pfx, const char *value,
1846 CopyHeaderFlags chflags, size_t col)
1848 while (value && (value[0] != '\0'))
1850 if (fputc(*value, fp) == EOF)
1852 /* corner-case: break words longer than 998 chars by force,
1853 * mandated by RFC5322 */
1854 if (!(chflags & CH_DISPLAY) && (++col >= 998))
1856 if (fputs("\n ", fp) < 0)
1862 if ((value[1] != '\0') && pfx && (pfx[0] != '\0') && (fputs(pfx, fp) == EOF))
1864 /* for display, turn folding spaces into folding tabs */
1865 if ((chflags & CH_DISPLAY) && ((value[1] == ' ') || (value[1] == '\t')))
1868 while ((value[0] != '\0') && ((value[0] == ' ') || (value[0] == '\t')))
1870 if (fputc('\t', fp) == EOF)
1881 * fold_one_header - Fold one header line
1882 * @param fp File to write to
1883 * @param tag Header key, e.g. "From"
1884 * @param value Header value
1885 * @param pfx Prefix for header
1886 * @param wraplen Column to wrap at
1887 * @param chflags Flags, see #CopyHeaderFlags
1889 * @retval -1 Failure
1891 static int fold_one_header(FILE *fp, const char *tag, const char *value,
1892 const char *pfx, int wraplen, CopyHeaderFlags chflags)
1894 const char *p = value;
1895 char buf[8192] = { 0 };
1896 int first = 1, col = 0, l = 0;
1897 const bool display = (chflags & CH_DISPLAY);
1899 mutt_debug(5, "pfx=[%s], tag=[%s], flags=%d value=[%s]\n", pfx, tag, chflags,
1902 if (tag && *tag && (fprintf(fp, "%s%s: ", NONULL(pfx), tag) < 0))
1904 col = mutt_str_strlen(tag) + ((tag && (tag[0] != '\0')) ? 2 : 0) + mutt_str_strlen(pfx);
1906 while (p && (p[0] != '\0'))
1910 /* find the next word and place it in 'buf'. it may start with
1911 * whitespace we can fold before */
1912 const char *next = mutt_str_find_word(p);
1913 l = MIN(sizeof(buf) - 1, next - p);
1917 /* determine width: character cells for display, bytes for sending
1918 * (we get pure ascii only) */
1919 const int w = mutt_mb_width(buf, col, display);
1920 const int enc = mutt_str_startswith(buf, "=?", CASE_MATCH);
1922 mutt_debug(5, "word=[%s], col=%d, w=%d, next=[0x0%x]\n", buf, col, w, *next);
1924 /* insert a folding \n before the current word's lwsp except for
1925 * header name, first word on a line (word longer than wrap width)
1926 * and encoded words */
1927 if (!first && !enc && col && ((col + w) >= wraplen))
1929 col = mutt_str_strlen(pfx);
1931 if (fprintf(fp, "\n%s", NONULL(pfx)) <= 0)
1935 /* print the actual word; for display, ignore leading ws for word
1936 * and fold with tab for readability */
1937 if (display && fold)
1940 while ((pc[0] != '\0') && ((pc[0] == ' ') || (pc[0] == '\t')))
1945 if (fputc('\t', fp) == EOF)
1947 if (print_val(fp, pfx, pc, chflags, col) < 0)
1951 else if (print_val(fp, pfx, buf, chflags, col) < 0)
1955 /* if the current word ends in \n, ignore all its trailing spaces
1956 * and reset column; this prevents us from putting only spaces (or
1957 * even none) on a line if the trailing spaces are located at our
1958 * current line width
1959 * XXX this covers ASCII space only, for display we probably
1960 * want something like iswspace() here */
1961 const char *sp = next;
1962 while ((sp[0] != '\0') && ((sp[0] == ' ') || (sp[0] == '\t')))
1974 /* if we have printed something but didn't \n-terminate it, do it
1975 * except the last word we printed ended in \n already */
1976 if (col && ((l == 0) || (buf[l - 1] != '\n')))
1977 if (putc('\n', fp) == EOF)
1984 * unfold_header - Unfold a wrapped email header
1985 * @param s String to process
1986 * @retval ptr Unfolded string
1988 * @note The string is altered in-place
1990 static char *unfold_header(char *s)
1995 while (p && (p[0] != '\0'))
1997 /* remove CRLF prior to FWSP, turn \t into ' ' */
1998 if ((p[0] == '\r') && (p[1] == '\n') && ((p[2] == ' ') || (p[2] == '\t')))
2004 /* remove LF prior to FWSP, turn \t into ' ' */
2005 else if ((p[0] == '\n') && ((p[1] == ' ') || (p[1] == '\t')))
2020 * write_one_header - Write out one header line
2021 * @param fp File to write to
2022 * @param pfxw Width of prefix string
2023 * @param max Max width
2024 * @param wraplen Column to wrap at
2025 * @param pfx Prefix for header
2026 * @param start Start of header line
2027 * @param end End of header line
2028 * @param chflags Flags, see #CopyHeaderFlags
2030 * @retval -1 Failure
2032 static int write_one_header(FILE *fp, int pfxw, int max, int wraplen, const char *pfx,
2033 const char *start, const char *end, CopyHeaderFlags chflags)
2035 char *tagbuf = NULL, *valbuf = NULL, *t = NULL;
2036 bool is_from = ((end - start) > 5) && mutt_str_startswith(start, "from ", CASE_IGNORE);
2038 /* only pass through folding machinery if necessary for sending,
2039 * never wrap From_ headers on sending */
2040 if (!(chflags & CH_DISPLAY) && ((pfxw + max <= wraplen) || is_from))
2042 valbuf = mutt_str_substr_dup(start, end);
2043 mutt_debug(5, "buf[%s%s] short enough, max width = %d <= %d\n", NONULL(pfx),
2044 valbuf, max, wraplen);
2047 if (fputs(pfx, fp) == EOF)
2054 t = strchr(valbuf, ':');
2057 mutt_debug(LL_DEBUG1, "#1 warning: header not in 'key: value' format!\n");
2061 if (print_val(fp, pfx, valbuf, chflags, mutt_str_strlen(pfx)) < 0)
2070 t = strchr(start, ':');
2071 if (!t || (t > end))
2073 mutt_debug(LL_DEBUG1, "#2 warning: header not in 'key: value' format!\n");
2079 valbuf = mutt_str_substr_dup(start, end);
2083 tagbuf = mutt_str_substr_dup(start, t);
2084 /* skip over the colon separating the header field name and value */
2087 /* skip over any leading whitespace (WSP, as defined in RFC5322)
2088 * NOTE: mutt_str_skip_email_wsp() does the wrong thing here.
2089 * See tickets 3609 and 3716. */
2090 while ((*t == ' ') || (*t == '\t'))
2093 valbuf = mutt_str_substr_dup(t, end);
2095 mutt_debug(LL_DEBUG2, "buf[%s%s] too long, max width = %d > %d\n",
2096 NONULL(pfx), NONULL(valbuf), max, wraplen);
2097 if (fold_one_header(fp, tagbuf, valbuf, pfx, wraplen, chflags) < 0)
2110 * mutt_write_one_header - Write one header line to a file
2111 * @param fp File to write to
2112 * @param tag Header key, e.g. "From"
2113 * @param value Header value
2114 * @param pfx Prefix for header
2115 * @param wraplen Column to wrap at
2116 * @param chflags Flags, see #CopyHeaderFlags
2118 * @retval -1 Failure
2120 * split several headers into individual ones and call write_one_header
2123 int mutt_write_one_header(FILE *fp, const char *tag, const char *value,
2124 const char *pfx, int wraplen, CopyHeaderFlags chflags)
2126 char *p = (char *) value;
2127 char *last = NULL, *line = NULL;
2128 int max = 0, w, rc = -1;
2129 int pfxw = mutt_strwidth(pfx);
2130 char *v = mutt_str_strdup(value);
2131 bool display = (chflags & CH_DISPLAY);
2133 if (!display || C_Weed)
2134 v = unfold_header(v);
2136 /* when not displaying, use sane wrap value */
2139 if ((C_WrapHeaders < 78) || (C_WrapHeaders > 998))
2142 wraplen = C_WrapHeaders;
2144 else if ((wraplen <= 0) || (wraplen > MuttIndexWindow->cols))
2145 wraplen = MuttIndexWindow->cols;
2149 /* if header is short enough, simply print it */
2150 if (!display && (mutt_strwidth(tag) + 2 + pfxw + mutt_strwidth(v) <= wraplen))
2152 mutt_debug(5, "buf[%s%s: %s] is short enough\n", NONULL(pfx), tag, v);
2153 if (fprintf(fp, "%s%s: %s\n", NONULL(pfx), tag, v) <= 0)
2160 rc = fold_one_header(fp, tag, v, pfx, wraplen, chflags);
2170 p = strchr(p, '\n');
2172 /* find maximum line width in current header */
2175 w = mutt_mb_width(line, 0, display);
2185 if ((*p != ' ') && (*p != '\t'))
2187 if (write_one_header(fp, pfxw, max, wraplen, pfx, last, p, chflags) < 0)
2195 if (write_one_header(fp, pfxw, max, wraplen, pfx, last, p, chflags) < 0)
2206 * mutt_rfc822_write_header - Write out one RFC822 header line
2207 * @param fp File to write to
2208 * @param env Envelope of email
2209 * @param attach Attachment
2210 * @param mode Mode, see #MuttWriteHeaderMode
2211 * @param privacy If true, remove headers that might identify the user
2212 * @param hide_protected_subject If true, replace subject header
2214 * @retval -1 Failure
2216 * Note: all RFC2047 encoding should be done outside of this routine, except
2217 * for the "real name." This will allow this routine to be used more than
2218 * once, if necessary.
2220 * Likewise, all IDN processing should happen outside of this routine.
2222 * privacy true => will omit any headers which may identify the user.
2223 * Output generated is suitable for being sent through
2224 * anonymous remailer chains.
2226 * hide_protected_subject: replaces the Subject header with
2227 * $crypt_protected_headers_subject in NORMAL or POSTPONE mode.
2229 int mutt_rfc822_write_header(FILE *fp, struct Envelope *env,
2230 struct Body *attach, enum MuttWriteHeaderMode mode,
2231 bool privacy, bool hide_protected_subject)
2234 char *p = NULL, *q = NULL;
2235 bool has_agent = false; /* user defined user-agent header field exists */
2237 if ((mode == MUTT_WRITE_HEADER_NORMAL) && !privacy)
2238 fputs(mutt_date_make_date(buf, sizeof(buf)), fp);
2240 /* UseFrom is not consulted here so that we can still write a From:
2241 * field if the user sets it with the 'my_hdr' command */
2242 if (!TAILQ_EMPTY(&env->from) && !privacy)
2245 mutt_addrlist_write(buf, sizeof(buf), &env->from, false);
2246 fprintf(fp, "From: %s\n", buf);
2249 if (!TAILQ_EMPTY(&env->sender) && !privacy)
2252 mutt_addrlist_write(buf, sizeof(buf), &env->sender, false);
2253 fprintf(fp, "Sender: %s\n", buf);
2256 if (!TAILQ_EMPTY(&env->to))
2259 mutt_write_addrlist(&env->to, fp, 4, 0);
2261 else if (mode == MUTT_WRITE_HEADER_EDITHDRS)
2267 if (!TAILQ_EMPTY(&env->cc))
2270 mutt_write_addrlist(&env->cc, fp, 4, 0);
2272 else if (mode == MUTT_WRITE_HEADER_EDITHDRS)
2278 if (!TAILQ_EMPTY(&env->bcc))
2280 if ((mode == MUTT_WRITE_HEADER_POSTPONE) || (mode == MUTT_WRITE_HEADER_EDITHDRS) ||
2281 ((mode == MUTT_WRITE_HEADER_NORMAL) && C_WriteBcc))
2284 mutt_write_addrlist(&env->bcc, fp, 5, 0);
2287 else if (mode == MUTT_WRITE_HEADER_EDITHDRS)
2291 fputs("Bcc:\n", fp);
2294 if (env->newsgroups)
2295 fprintf(fp, "Newsgroups: %s\n", env->newsgroups);
2296 else if ((mode == MUTT_WRITE_HEADER_EDITHDRS) && OptNewsSend)
2297 fputs("Newsgroups:\n", fp);
2299 if (env->followup_to)
2300 fprintf(fp, "Followup-To: %s\n", env->followup_to);
2301 else if ((mode == MUTT_WRITE_HEADER_EDITHDRS) && OptNewsSend)
2302 fputs("Followup-To:\n", fp);
2304 if (env->x_comment_to)
2305 fprintf(fp, "X-Comment-To: %s\n", env->x_comment_to);
2306 else if ((mode == MUTT_WRITE_HEADER_EDITHDRS) && OptNewsSend && C_XCommentTo)
2307 fputs("X-Comment-To:\n", fp);
2312 if (hide_protected_subject &&
2313 ((mode == MUTT_WRITE_HEADER_NORMAL) || (mode == MUTT_WRITE_HEADER_POSTPONE)))
2314 mutt_write_one_header(fp, "Subject", C_CryptProtectedHeadersSubject, NULL, 0, CH_NO_FLAGS);
2316 mutt_write_one_header(fp, "Subject", env->subject, NULL, 0, CH_NO_FLAGS);
2318 else if (mode == MUTT_WRITE_HEADER_EDITHDRS)
2319 fputs("Subject:\n", fp);
2321 /* save message id if the user has set it */
2322 if (env->message_id && !privacy)
2323 fprintf(fp, "Message-ID: %s\n", env->message_id);
2325 if (!TAILQ_EMPTY(&env->reply_to))
2327 fputs("Reply-To: ", fp);
2328 mutt_write_addrlist(&env->reply_to, fp, 10, 0);
2330 else if (mode == MUTT_WRITE_HEADER_EDITHDRS)
2331 fputs("Reply-To:\n", fp);
2333 if (!TAILQ_EMPTY(&env->mail_followup_to))
2338 fputs("Mail-Followup-To: ", fp);
2339 mutt_write_addrlist(&env->mail_followup_to, fp, 18, 0);
2342 if ((mode == MUTT_WRITE_HEADER_NORMAL) || (mode == MUTT_WRITE_HEADER_POSTPONE))
2344 if (!STAILQ_EMPTY(&env->references))
2346 fputs("References:", fp);
2347 mutt_write_references(&env->references, fp, 10);
2351 /* Add the MIME headers */
2352 fputs("MIME-Version: 1.0\n", fp);
2353 mutt_write_mime_header(attach, fp);
2356 if (!STAILQ_EMPTY(&env->in_reply_to))
2358 fputs("In-Reply-To:", fp);
2359 mutt_write_references(&env->in_reply_to, fp, 0);
2363 /* Add any user defined headers */
2364 struct ListNode *tmp = NULL;
2365 STAILQ_FOREACH(tmp, &env->userhdrs, entries)
2367 p = strchr(tmp->data, ':');
2374 p = mutt_str_skip_email_wsp(p + 1);
2378 continue; /* don't emit empty fields. */
2381 /* check to see if the user has overridden the user-agent field */
2382 if (mutt_str_startswith(tmp->data, "user-agent", CASE_IGNORE))
2392 mutt_write_one_header(fp, tmp->data, p, NULL, 0, CH_NO_FLAGS);
2397 if ((mode == MUTT_WRITE_HEADER_NORMAL) && !privacy && C_UserAgent && !has_agent)
2399 /* Add a vanity header */
2400 fprintf(fp, "User-Agent: NeoMutt/%s%s\n", PACKAGE_VERSION, GitVer);
2403 return (ferror(fp) == 0) ? 0 : -1;
2407 * encode_headers - RFC2047-encode a list of headers
2408 * @param h String List of headers
2410 * The strings are encoded in-place.
2412 static void encode_headers(struct ListHead *h)
2418 struct ListNode *np = NULL;
2419 STAILQ_FOREACH(np, h, entries)
2421 p = strchr(np->data, ':');
2426 p = mutt_str_skip_email_wsp(p + 1);
2427 tmp = mutt_str_strdup(p);
2432 rfc2047_encode(&tmp, NULL, i + 2, C_SendCharset);
2433 mutt_mem_realloc(&np->data, i + 2 + mutt_str_strlen(tmp) + 1);
2435 sprintf(np->data + i + 2, "%s", tmp);
2442 * mutt_fqdn - Get the Fully-Qualified Domain Name
2443 * @param may_hide_host If true, hide the hostname (leaving just the domain)
2444 * @retval ptr string pointer into Hostname
2445 * @retval NULL Error, e.g no Hostname
2447 * @warning Do not free the returned pointer
2449 const char *mutt_fqdn(bool may_hide_host)
2451 if (!C_Hostname || (C_Hostname[0] == '@'))
2454 char *p = C_Hostname;
2456 if (may_hide_host && C_HiddenHost)
2458 p = strchr(C_Hostname, '.');
2462 // sanity check: don't hide the host if the fqdn is something like example.com
2463 if (!p || !strchr(p, '.'))
2471 * gen_msgid - Generate a unique Message ID
2472 * @retval ptr Message ID
2474 * @note The caller should free the string
2476 static char *gen_msgid(void)
2479 unsigned char rndid[MUTT_RANDTAG_LEN + 1];
2481 mutt_rand_base32(rndid, sizeof(rndid) - 1);
2482 rndid[MUTT_RANDTAG_LEN] = 0;
2483 const char *fqdn = mutt_fqdn(false);
2485 fqdn = NONULL(ShortHostname);
2487 struct tm tm = mutt_date_gmtime(MUTT_DATE_NOW);
2488 snprintf(buf, sizeof(buf), "<%d%02d%02d%02d%02d%02d.%s@%s>", tm.tm_year + 1900,
2489 tm.tm_mon + 1, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec, rndid, fqdn);
2490 return mutt_str_strdup(buf);
2494 * alarm_handler - Async notification of an alarm signal
2495 * @param sig Signal, (SIGALRM)
2497 static void alarm_handler(int sig)
2503 * send_msg - invoke sendmail in a subshell
2504 * @param[in] path Path to program to execute
2505 * @param[in] args Arguments to pass to program
2506 * @param[in] msg Temp file containing message to send
2507 * @param[out] tempfile If sendmail is put in the background, this points
2508 * to the temporary file containing the stdout of the
2509 * child process. If it is NULL, stderr and stdout
2510 * are not redirected.
2512 * @retval >0 Failure, return code from sendmail
2514 static int send_msg(const char *path, char **args, const char *msg, char **tempfile)
2519 mutt_sig_block_system();
2522 /* we also don't want to be stopped right now */
2523 sigaddset(&set, SIGTSTP);
2524 sigprocmask(SIG_BLOCK, &set, NULL);
2526 if ((C_SendmailWait >= 0) && tempfile)
2530 mutt_mktemp(tmp, sizeof(tmp));
2531 *tempfile = mutt_str_strdup(tmp);
2537 struct sigaction act, oldalrm;
2539 /* save parent's ID before setsid() */
2540 pid_t ppid = getppid();
2542 /* we want the delivery to continue even after the main process dies,
2543 * so we put ourselves into another session right away */
2546 /* next we close all open files */
2549 for (int fd = tempfile ? 1 : 3; fd < OPEN_MAX; fd++)
2551 #elif defined(_POSIX_OPEN_MAX)
2552 for (int fd = tempfile ? 1 : 3; fd < _POSIX_OPEN_MAX; fd++)
2562 /* now the second fork() */
2566 /* "msg" will be opened as stdin */
2567 if (open(msg, O_RDONLY, 0) < 0)
2574 if ((C_SendmailWait >= 0) && tempfile && *tempfile)
2576 /* *tempfile will be opened as stdout */
2577 if (open(*tempfile, O_WRONLY | O_APPEND | O_CREAT | O_EXCL, 0600) < 0)
2579 /* redirect stderr to *tempfile too */
2585 if (open("/dev/null", O_WRONLY | O_APPEND) < 0) /* stdout */
2587 if (open("/dev/null", O_RDWR | O_APPEND) < 0) /* stderr */
2591 /* execvpe is a glibc extension */
2592 /* execvpe (path, args, mutt_envlist_getlist()); */
2603 /* C_SendmailWait > 0: interrupt waitpid() after C_SendmailWait seconds
2604 * C_SendmailWait = 0: wait forever
2605 * C_SendmailWait < 0: don't wait */
2606 if (C_SendmailWait > 0)
2609 act.sa_handler = alarm_handler;
2611 /* need to make sure waitpid() is interrupted on SIGALRM */
2612 act.sa_flags = SA_INTERRUPT;
2616 sigemptyset(&act.sa_mask);
2617 sigaction(SIGALRM, &act, &oldalrm);
2618 alarm(C_SendmailWait);
2620 else if (C_SendmailWait < 0)
2621 _exit(0xff & EX_OK);
2623 if (waitpid(pid, &st, 0) > 0)
2625 st = WIFEXITED(st) ? WEXITSTATUS(st) : S_ERR;
2626 if (C_SendmailWait && (st == (0xff & EX_OK)) && tempfile && *tempfile)
2628 unlink(*tempfile); /* no longer needed */
2634 st = ((C_SendmailWait > 0) && (errno == EINTR) && SigAlrm) ? S_BKG : S_ERR;
2635 if ((C_SendmailWait > 0) && tempfile && *tempfile)
2642 if (C_SendmailWait > 0)
2644 /* reset alarm; not really needed, but... */
2646 sigaction(SIGALRM, &oldalrm, NULL);
2649 if ((kill(ppid, 0) == -1) && (errno == ESRCH) && tempfile && *tempfile)
2651 /* the parent is already dead */
2659 sigprocmask(SIG_UNBLOCK, &set, NULL);
2661 if ((pid != -1) && (waitpid(pid, &st, 0) > 0))
2662 st = WIFEXITED(st) ? WEXITSTATUS(st) : S_ERR; /* return child status */
2664 st = S_ERR; /* error */
2666 mutt_sig_unblock_system(true);
2672 * add_args_one - Add an Address to a dynamic array
2673 * @param[out] args Array to add to
2674 * @param[out] argslen Number of entries in array
2675 * @param[out] argsmax Allocated size of the array
2676 * @param[in] addr Address to add
2677 * @retval ptr Updated array
2679 static char **add_args_one(char **args, size_t *argslen, size_t *argsmax, struct Address *addr)
2681 /* weed out group mailboxes, since those are for display only */
2682 if (addr->mailbox && !addr->group)
2684 if (*argslen == *argsmax)
2685 mutt_mem_realloc(&args, (*argsmax += 5) * sizeof(char *));
2686 args[(*argslen)++] = addr->mailbox;
2692 * add_args - Add a list of Addresses to a dynamic array
2693 * @param[out] args Array to add to
2694 * @param[out] argslen Number of entries in array
2695 * @param[out] argsmax Allocated size of the array
2696 * @param[in] al Addresses to add
2697 * @retval ptr Updated array
2699 static char **add_args(char **args, size_t *argslen, size_t *argsmax, struct AddressList *al)
2704 struct Address *a = NULL;
2705 TAILQ_FOREACH(a, al, entries)
2707 args = add_args_one(args, argslen, argsmax, a);
2713 * add_option - Add a string to a dynamic array
2714 * @param[out] args Array to add to
2715 * @param[out] argslen Number of entries in array
2716 * @param[out] argsmax Allocated size of the array
2717 * @param[in] s string to add
2718 * @retval ptr Updated array
2720 * @note The array may be realloc()'d
2722 static char **add_option(char **args, size_t *argslen, size_t *argsmax, char *s)
2724 if (*argslen == *argsmax)
2725 mutt_mem_realloc(&args, (*argsmax += 5) * sizeof(char *));
2726 args[(*argslen)++] = s;
2731 * mutt_invoke_sendmail - Run sendmail
2732 * @param from The sender
2733 * @param to Recipients
2734 * @param cc Recipients
2735 * @param bcc Recipients
2736 * @param msg File containing message
2737 * @param eightbit Message contains 8bit chars
2739 * @retval -1 Failure
2741 int mutt_invoke_sendmail(struct AddressList *from, struct AddressList *to,
2742 struct AddressList *cc, struct AddressList *bcc,
2743 const char *msg, int eightbit)
2745 char *ps = NULL, *path = NULL, *s = NULL, *childout = NULL;
2747 size_t argslen = 0, argsmax = 0;
2748 char **extra_args = NULL;
2756 mutt_expando_format(cmd, sizeof(cmd), 0, MuttIndexWindow->cols,
2757 NONULL(C_Inews), nntp_format_str, 0, MUTT_FORMAT_NO_FLAGS);
2760 i = nntp_post(Context->mailbox, msg);
2765 s = mutt_str_strdup(cmd);
2769 s = mutt_str_strdup(C_Sendmail);
2771 /* ensure that $sendmail is set to avoid a crash. http://dev.mutt.org/trac/ticket/3548 */
2774 mutt_error(_("$sendmail must be set in order to send mail"));
2780 while ((ps = strtok(ps, " ")))
2782 if (argslen == argsmax)
2783 mutt_mem_realloc(&args, sizeof(char *) * (argsmax += 5));
2787 if (mutt_str_strcmp(ps, "--") == 0)
2789 args[argslen++] = ps;
2793 path = mutt_str_strdup(ps);
2794 ps = strrchr(ps, '/');
2799 args[argslen++] = ps;
2809 size_t extra_argslen = 0;
2810 /* If C_Sendmail contained a "--", we save the recipients to append to
2811 * args after other possible options added below. */
2815 size_t extra_argsmax = 0;
2816 while ((ps = strtok(ps, " ")))
2818 if (extra_argslen == extra_argsmax)
2819 mutt_mem_realloc(&extra_args, sizeof(char *) * (extra_argsmax += 5));
2821 extra_args[extra_argslen++] = ps;
2826 if (eightbit && C_Use8bitmime)
2827 args = add_option(args, &argslen, &argsmax, "-B8BITMIME");
2829 if (C_UseEnvelopeFrom)
2831 if (C_EnvelopeFromAddress)
2833 args = add_option(args, &argslen, &argsmax, "-f");
2834 args = add_args_one(args, &argslen, &argsmax, C_EnvelopeFromAddress);
2836 else if (!TAILQ_EMPTY(from) && !TAILQ_NEXT(TAILQ_FIRST(from), entries))
2838 args = add_option(args, &argslen, &argsmax, "-f");
2839 args = add_args(args, &argslen, &argsmax, from);
2845 args = add_option(args, &argslen, &argsmax, "-N");
2846 args = add_option(args, &argslen, &argsmax, C_DsnNotify);
2850 args = add_option(args, &argslen, &argsmax, "-R");
2851 args = add_option(args, &argslen, &argsmax, C_DsnReturn);
2853 args = add_option(args, &argslen, &argsmax, "--");
2854 for (i = 0; i < extra_argslen; i++)
2855 args = add_option(args, &argslen, &argsmax, extra_args[i]);
2856 args = add_args(args, &argslen, &argsmax, to);
2857 args = add_args(args, &argslen, &argsmax, cc);
2858 args = add_args(args, &argslen, &argsmax, bcc);
2863 if (argslen == argsmax)
2864 mutt_mem_realloc(&args, sizeof(char *) * (++argsmax));
2866 args[argslen++] = NULL;
2868 /* Some user's $sendmail command uses gpg for password decryption,
2869 * and is set up to prompt using ncurses pinentry. If we
2870 * mutt_endwin() it leaves other users staring at a blank screen.
2871 * So instead, just force a hard redraw on the next refresh. */
2873 mutt_need_hard_redraw();
2875 i = send_msg(path, args, msg, OptNoCurses ? NULL : &childout);
2876 if (i != (EX_OK & 0xff))
2880 const char *e = mutt_str_sysexit(i);
2881 mutt_error(_("Error sending message, child exited %d (%s)"), i, NONULL(e));
2886 if ((stat(childout, &st) == 0) && (st.st_size > 0))
2887 mutt_do_pager(_("Output of the delivery process"), childout,
2888 MUTT_PAGER_NO_FLAGS, NULL);
2901 if (i == (EX_OK & 0xff))
2903 else if (i == S_BKG)
2911 * mutt_prepare_envelope - Prepare an email header
2912 * @param env Envelope to prepare
2913 * @param final true if this email is going to be sent (not postponed)
2915 * Encode all the headers prior to sending the email.
2917 * For postponing (!final) do the necessary encodings only
2919 void mutt_prepare_envelope(struct Envelope *env, bool final)
2923 if (!TAILQ_EMPTY(&env->bcc) && TAILQ_EMPTY(&env->to) && TAILQ_EMPTY(&env->cc))
2925 /* some MTA's will put an Apparently-To: header field showing the Bcc:
2926 * recipients if there is no To: or Cc: field, so attempt to suppress
2927 * it by using an empty To: field. */
2928 struct Address *to = mutt_addr_new();
2930 mutt_addrlist_append(&env->to, to);
2931 mutt_addrlist_append(&env->to, mutt_addr_new());
2935 mutt_addr_cat(buf, sizeof(buf), "undisclosed-recipients", AddressSpecials);
2937 to->mailbox = mutt_str_strdup(buf);
2940 mutt_set_followup_to(env);
2942 if (!env->message_id)
2943 env->message_id = gen_msgid();
2946 /* Take care of 8-bit => 7-bit conversion. */
2947 rfc2047_encode_envelope(env);
2948 encode_headers(&env->userhdrs);
2952 * mutt_unprepare_envelope - Undo the encodings of mutt_prepare_envelope()
2953 * @param env Envelope to unprepare
2955 * Decode all the headers of an email, e.g. when the sending failed or was
2958 void mutt_unprepare_envelope(struct Envelope *env)
2960 struct ListNode *item = NULL;
2961 STAILQ_FOREACH(item, &env->userhdrs, entries)
2963 rfc2047_decode(&item->data);
2966 mutt_addrlist_clear(&env->mail_followup_to);
2968 /* back conversions */
2969 rfc2047_decode_envelope(env);
2973 * bounce_message - Bounce an email message
2974 * @param fp Handle of message
2976 * @param to Address to bounce to
2977 * @param resent_from Address of new sender
2978 * @param env_from Envelope of original sender
2980 * @retval -1 Failure
2982 static int bounce_message(FILE *fp, struct Email *e, struct AddressList *to,
2983 const char *resent_from, struct AddressList *env_from)
2989 char tempfile[PATH_MAX];
2991 mutt_mktemp(tempfile, sizeof(tempfile));
2992 FILE *fp_tmp = mutt_file_fopen(tempfile, "w");
2996 CopyHeaderFlags chflags = CH_XMIT | CH_NONEWLINE | CH_NOQFROM;
2998 if (!C_BounceDelivered)
2999 chflags |= CH_WEED_DELIVERED;
3001 fseeko(fp, e->offset, SEEK_SET);
3002 fprintf(fp_tmp, "Resent-From: %s", resent_from);
3003 fprintf(fp_tmp, "\nResent-%s", mutt_date_make_date(date, sizeof(date)));
3004 char *msgid_str = gen_msgid();
3005 fprintf(fp_tmp, "Resent-Message-ID: %s\n", msgid_str);
3007 fputs("Resent-To: ", fp_tmp);
3008 mutt_write_addrlist(to, fp_tmp, 11, 0);
3009 mutt_copy_header(fp, e, fp_tmp, chflags, NULL);
3010 fputc('\n', fp_tmp);
3011 mutt_file_copy_bytes(fp, fp_tmp, e->content->length);
3012 if (mutt_file_fclose(&fp_tmp) != 0)
3014 mutt_perror(tempfile);
3020 rc = mutt_smtp_send(env_from, to, NULL, NULL, tempfile, e->content->encoding == ENC_8BIT);
3023 rc = mutt_invoke_sendmail(env_from, to, NULL, NULL, tempfile,
3024 e->content->encoding == ENC_8BIT);
3031 * mutt_bounce_message - Bounce an email message
3032 * @param fp Handle of message
3034 * @param to AddressList to bounce to
3036 * @retval -1 Failure
3038 int mutt_bounce_message(FILE *fp, struct Email *e, struct AddressList *to)
3040 if (!fp || !e || !to || TAILQ_EMPTY(to))
3043 const char *fqdn = mutt_fqdn(true);
3044 char resent_from[256];
3047 resent_from[0] = '\0';
3048 struct Address *from = mutt_default_from();
3049 struct AddressList from_list = TAILQ_HEAD_INITIALIZER(from_list);
3050 mutt_addrlist_append(&from_list, from);
3052 /* mutt_default_from() does not use $realname if the real name is not set
3053 * in $from, so we add it here. The reason it is not added in
3054 * mutt_default_from() is that during normal sending, we execute
3055 * send-hooks and set the realname last so that it can be changed based
3056 * upon message criteria. */
3057 if (!from->personal)
3058 from->personal = mutt_str_strdup(C_Realname);
3060 mutt_addrlist_qualify(&from_list, fqdn);
3062 rfc2047_encode_addrlist(&from_list, "Resent-From");
3063 if (mutt_addrlist_to_intl(&from_list, &err))
3065 mutt_error(_("Bad IDN %s while preparing resent-from"), err);
3067 mutt_addrlist_clear(&from_list);
3070 mutt_addrlist_write(resent_from, sizeof(resent_from), &from_list, false);
3073 OptNewsSend = false;
3076 /* prepare recipient list. idna conversion appears to happen before this
3077 * function is called, since the user receives confirmation of the address
3078 * list being bounced to. */
3079 struct AddressList resent_to = TAILQ_HEAD_INITIALIZER(resent_to);
3080 mutt_addrlist_copy(&resent_to, to, false);
3081 rfc2047_encode_addrlist(&resent_to, "Resent-To");
3082 int rc = bounce_message(fp, e, &resent_to, resent_from, &from_list);
3083 mutt_addrlist_clear(&resent_to);
3084 mutt_addrlist_clear(&from_list);
3090 * set_noconv_flags - Set/reset the "x-mutt-noconv" flag
3091 * @param b Body of email
3092 * @param flag If true, set the flag, otherwise remove it
3094 static void set_noconv_flags(struct Body *b, bool flag)
3096 for (; b; b = b->next)
3098 if ((b->type == TYPE_MESSAGE) || (b->type == TYPE_MULTIPART))
3099 set_noconv_flags(b->parts, flag);
3100 else if ((b->type == TYPE_TEXT) && b->noconv)
3103 mutt_param_set(&b->parameter, "x-mutt-noconv", "yes");
3105 mutt_param_delete(&b->parameter, "x-mutt-noconv");
3111 * mutt_write_multiple_fcc - Handle FCC with multiple, comma separated entries
3112 * @param[in] path Path to mailboxes (comma separated)
3113 * @param[in] e Email
3114 * @param[in] msgid Message id
3115 * @param[in] post If true, postpone message
3116 * @param[in] fcc fcc setting to save (postpone only)
3117 * @param[out] finalpath Final path of email
3119 * @retval -1 Failure
3121 int mutt_write_multiple_fcc(const char *path, struct Email *e, const char *msgid,
3122 bool post, char *fcc, char **finalpath)
3124 char fcc_tok[PATH_MAX];
3125 char fcc_expanded[PATH_MAX];
3127 mutt_str_strfcpy(fcc_tok, path, sizeof(fcc_tok));
3129 char *tok = strtok(fcc_tok, ",");
3133 mutt_debug(LL_DEBUG1, "Fcc: initial mailbox = '%s'\n", tok);
3134 /* mutt_expand_path already called above for the first token */
3135 int status = mutt_write_fcc(tok, e, msgid, post, fcc, finalpath);
3139 while ((tok = strtok(NULL, ",")))
3144 /* Only call mutt_expand_path if tok has some data */
3145 mutt_debug(LL_DEBUG1, "Fcc: additional mailbox token = '%s'\n", tok);
3146 mutt_str_strfcpy(fcc_expanded, tok, sizeof(fcc_expanded));
3147 mutt_expand_path(fcc_expanded, sizeof(fcc_expanded));
3148 mutt_debug(LL_DEBUG1, " Additional mailbox expanded = '%s'\n", fcc_expanded);
3149 status = mutt_write_fcc(fcc_expanded, e, msgid, post, fcc, finalpath);
3158 * mutt_write_fcc - Write email to FCC mailbox
3159 * @param[in] path Path to mailbox
3160 * @param[in] e Email
3161 * @param[in] msgid Message id
3162 * @param[in] post If true, postpone message
3163 * @param[in] fcc fcc setting to save (postpone only)
3164 * @param[out] finalpath Final path of email
3166 * @retval -1 Failure
3168 int mutt_write_fcc(const char *path, struct Email *e, const char *msgid,
3169 bool post, char *fcc, char **finalpath)
3171 struct Message *msg = NULL;
3172 char tempfile[PATH_MAX];
3173 FILE *fp_tmp = NULL;
3175 bool need_mailbox_cleanup = false;
3178 MsgOpenFlags onm_flags;
3181 set_noconv_flags(e->content, true);
3183 #ifdef RECORD_FOLDER_HOOK
3184 mutt_folder_hook(path, NULL);
3186 struct Mailbox *m_fcc = mx_path_resolve(path);
3187 bool old_append = m_fcc->append;
3188 struct Context *ctx_fcc = mx_mbox_open(m_fcc, MUTT_APPEND | MUTT_QUIET);
3191 mutt_debug(LL_DEBUG1, "unable to open mailbox %s in append-mode, aborting\n", path);
3192 mailbox_free(&m_fcc);
3196 /* We need to add a Content-Length field to avoid problems where a line in
3197 * the message body begins with "From " */
3198 if ((ctx_fcc->mailbox->magic == MUTT_MMDF) || (ctx_fcc->mailbox->magic == MUTT_MBOX))
3200 mutt_mktemp(tempfile, sizeof(tempfile));
3201 fp_tmp = mutt_file_fopen(tempfile, "w+");
3204 mutt_perror(tempfile);
3205 mx_mbox_close(&ctx_fcc);
3208 /* remember new mail status before appending message */
3209 need_mailbox_cleanup = true;
3213 e->read = !post; /* make sure to put it in the 'cur' directory (maildir) */
3214 onm_flags = MUTT_ADD_FROM;
3216 onm_flags |= MUTT_SET_DRAFT;
3217 msg = mx_msg_open_new(ctx_fcc->mailbox, e, onm_flags);
3220 mutt_file_fclose(&fp_tmp);
3221 mx_mbox_close(&ctx_fcc);
3225 /* post == 1 => postpone message.
3226 * post == 0 => Normal mode. */
3227 mutt_rfc822_write_header(
3228 msg->fp, e->env, e->content, post ? MUTT_WRITE_HEADER_POSTPONE : MUTT_WRITE_HEADER_NORMAL,
3229 false, C_CryptProtectedHeadersRead && mutt_should_hide_protected_subject(e));
3231 /* (postponement) if this was a reply of some sort, <msgid> contains the
3232 * Message-ID: of message replied to. Save it using a special X-Mutt-
3233 * header so it can be picked up if the message is recalled at a later
3234 * point in time. This will allow the message to be marked as replied if
3235 * the same mailbox is still open. */
3237 fprintf(msg->fp, "X-Mutt-References: %s\n", msgid);
3239 /* (postponement) save the Fcc: using a special X-Mutt- header so that
3240 * it can be picked up when the message is recalled */
3242 fprintf(msg->fp, "X-Mutt-Fcc: %s\n", fcc);
3244 if ((ctx_fcc->mailbox->magic == MUTT_MMDF) || (ctx_fcc->mailbox->magic == MUTT_MBOX))
3245 fprintf(msg->fp, "Status: RO\n");
3247 /* mutt_rfc822_write_header() only writes out a Date: header with
3248 * mode == 0, i.e. _not_ postponement; so write out one ourself */
3250 fprintf(msg->fp, "%s", mutt_date_make_date(buf, sizeof(buf)));
3252 /* (postponement) if the mail is to be signed or encrypted, save this info */
3253 if (((WithCrypto & APPLICATION_PGP) != 0) && post && (e->security & APPLICATION_PGP))
3255 fputs("X-Mutt-PGP: ", msg->fp);
3256 if (e->security & SEC_ENCRYPT)
3257 fputc('E', msg->fp);
3258 if (e->security & SEC_OPPENCRYPT)
3259 fputc('O', msg->fp);
3260 if (e->security & SEC_SIGN)
3262 fputc('S', msg->fp);
3264 fprintf(msg->fp, "<%s>", C_PgpSignAs);
3266 if (e->security & SEC_INLINE)
3267 fputc('I', msg->fp);
3268 fputc('\n', msg->fp);
3271 /* (postponement) if the mail is to be signed or encrypted, save this info */
3272 if (((WithCrypto & APPLICATION_SMIME) != 0) && post && (e->security & APPLICATION_SMIME))
3274 fputs("X-Mutt-SMIME: ", msg->fp);
3275 if (e->security & SEC_ENCRYPT)
3277 fputc('E', msg->fp);
3278 if (C_SmimeEncryptWith)
3279 fprintf(msg->fp, "C<%s>", C_SmimeEncryptWith);
3281 if (e->security & SEC_OPPENCRYPT)
3282 fputc('O', msg->fp);
3283 if (e->security & SEC_SIGN)
3285 fputc('S', msg->fp);
3287 fprintf(msg->fp, "<%s>", C_SmimeSignAs);
3289 if (e->security & SEC_INLINE)
3290 fputc('I', msg->fp);
3291 fputc('\n', msg->fp);
3295 /* (postponement) if the mail is to be sent through a mixmaster
3296 * chain, save that information */
3298 if (post && !STAILQ_EMPTY(&e->chain))
3300 fputs("X-Mutt-Mix:", msg->fp);
3301 struct ListNode *p = NULL;
3302 STAILQ_FOREACH(p, &e->chain, entries)
3304 fprintf(msg->fp, " %s", (char *) p->data);
3307 fputc('\n', msg->fp);
3313 mutt_write_mime_body(e->content, fp_tmp);
3315 /* make sure the last line ends with a newline. Emacs doesn't ensure this
3316 * will happen, and it can cause problems parsing the mailbox later. */
3317 fseek(fp_tmp, -1, SEEK_END);
3318 if (fgetc(fp_tmp) != '\n')
3320 fseek(fp_tmp, 0, SEEK_END);
3321 fputc('\n', fp_tmp);
3327 mutt_debug(LL_DEBUG1, "%s: write failed\n", tempfile);
3328 mutt_file_fclose(&fp_tmp);
3330 mx_msg_commit(ctx_fcc->mailbox, msg); /* XXX really? */
3331 mx_msg_close(ctx_fcc->mailbox, &msg);
3332 mx_mbox_close(&ctx_fcc);
3336 /* count the number of lines */
3338 char line_buf[1024];
3340 while (fgets(line_buf, sizeof(line_buf), fp_tmp))
3342 fprintf(msg->fp, "Content-Length: " OFF_T_FMT "\n", (LOFF_T) ftello(fp_tmp));
3343 fprintf(msg->fp, "Lines: %d\n\n", lines);
3345 /* copy the body and clean up */
3347 rc = mutt_file_copy_stream(fp_tmp, msg->fp);
3348 if (fclose(fp_tmp) != 0)
3350 /* if there was an error, leave the temp version */
3356 fputc('\n', msg->fp); /* finish off the header */
3357 rc = mutt_write_mime_body(e->content, msg->fp);
3360 if (mx_msg_commit(ctx_fcc->mailbox, msg) != 0)
3363 *finalpath = mutt_str_strdup(msg->committed_path);
3364 mx_msg_close(ctx_fcc->mailbox, &msg);
3365 mx_mbox_close(&ctx_fcc);
3367 if (!post && need_mailbox_cleanup)
3368 mutt_mailbox_cleanup(path, &st);
3371 set_noconv_flags(e->content, false);
3374 m_fcc->append = old_append;
3375 #ifdef RECORD_FOLDER_HOOK
3376 /* We ran a folder hook for the destination mailbox,
3377 * now we run it for the user's current mailbox */
3378 if (Context && Context->mailbox->path)
3379 mutt_folder_hook(Context->mailbox->path, Context->mailbox->desc);