2 * Copyright (C) 1996-2000 Michael R. Elkins <me@mutt.org>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
31 #include "mutt_curses.h"
37 #include "mutt_crypt.h"
40 #define BUFI_SIZE 1000
41 #define BUFO_SIZE 2000
44 typedef void handler_f (BODY *, STATE *);
45 typedef handler_f *handler_t;
47 int Index_hex[128] = {
48 -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
49 -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
50 -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
51 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,-1,-1, -1,-1,-1,-1,
52 -1,10,11,12, 13,14,15,-1, -1,-1,-1,-1, -1,-1,-1,-1,
53 -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
54 -1,10,11,12, 13,14,15,-1, -1,-1,-1,-1, -1,-1,-1,-1,
55 -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1
59 -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
60 -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
61 -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,62, -1,-1,-1,63,
62 52,53,54,55, 56,57,58,59, 60,61,-1,-1, -1,-1,-1,-1,
63 -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10, 11,12,13,14,
64 15,16,17,18, 19,20,21,22, 23,24,25,-1, -1,-1,-1,-1,
65 -1,26,27,28, 29,30,31,32, 33,34,35,36, 37,38,39,40,
66 41,42,43,44, 45,46,47,48, 49,50,51,-1, -1,-1,-1,-1
69 static void state_prefix_put (const char *d, size_t dlen, STATE *s)
73 state_prefix_putc (*d++, s);
75 fwrite (d, dlen, 1, s->fpout);
78 void mutt_convert_to_state(iconv_t cd, char *bufi, size_t *l, STATE *s)
87 if (cd != (iconv_t)(-1))
89 ob = bufo, obl = sizeof (bufo);
90 iconv (cd, 0, 0, &ob, &obl);
92 state_prefix_put (bufo, ob - bufo, s);
94 if (Quotebuf[0] != '\0')
95 state_prefix_putc ('\n', s);
99 if (cd == (iconv_t)(-1))
101 state_prefix_put (bufi, *l, s);
109 ob = bufo, obl = sizeof (bufo);
110 mutt_iconv (cd, &ib, &ibl, &ob, &obl, 0, "?");
113 state_prefix_put (bufo, ob - bufo, s);
115 memmove (bufi, ib, ibl);
119 void mutt_decode_xbit (STATE *s, long len, int istext, iconv_t cd)
122 char bufi[BUFI_SIZE];
129 while ((c = fgetc(s->fpin)) != EOF && len--)
133 if((ch = fgetc(s->fpin)) == '\n')
143 if (l == sizeof (bufi))
144 mutt_convert_to_state (cd, bufi, &l, s);
147 mutt_convert_to_state (cd, bufi, &l, s);
148 mutt_convert_to_state (cd, 0, 0, s);
150 state_reset_prefix (s);
153 mutt_copy_bytes (s->fpin, s->fpout, len);
156 static int qp_decode_triple (char *s, char *d)
158 /* soft line break */
159 if (*s == '=' && !(*(s+1)))
162 /* quoted-printable triple */
164 isxdigit ((unsigned char) *(s+1)) &&
165 isxdigit ((unsigned char) *(s+2)))
167 *d = (hexval (*(s+1)) << 4) | hexval (*(s+2));
175 static void qp_decode_line (char *dest, char *src, size_t *l,
184 /* decode the line */
186 for (d = dest, s = src; *s;)
188 switch ((kind = qp_decode_triple (s, &c)))
190 case 0: *d++ = c; s += 3; break; /* qp triple */
191 case -1: *d++ = *s++; break; /* single character */
192 case 1: soft = 1; s++; break; /* soft line break */
196 if (!soft && last == '\n')
204 * Decode an attachment encoded with quoted-printable.
206 * Why doesn't this overflow any buffers? First, it's guaranteed
207 * that the length of a line grows when you _en_-code it to
208 * quoted-printable. That means that we always can store the
209 * result in a buffer of at most the _same_ size.
211 * Now, we don't special-case if the line we read with fgets()
212 * isn't terminated. We don't care about this, since STRING > 78,
213 * so corrupted input will just be corrupted a bit more. That
214 * implies that STRING+1 bytes are always sufficient to store the
215 * result of qp_decode_line.
217 * Finally, at soft line breaks, some part of a multibyte character
218 * may have been left over by mutt_convert_to_state(). This shouldn't
219 * be more than 6 characters, so STRING + 7 should be sufficient
220 * memory to store the decoded data.
222 * Just to make sure that I didn't make some off-by-one error
223 * above, we just use STRING*2 for the target buffer's size.
227 void mutt_decode_quoted (STATE *s, long len, int istext, iconv_t cd)
230 char decline[2*STRING];
232 size_t linelen; /* number of input bytes in `line' */
235 int last; /* store the last character in the input line */
245 * It's ok to use a fixed size buffer for input, even if the line turns
246 * out to be longer than this. Just process the line in chunks. This
247 * really shouldn't happen according the MIME spec, since Q-P encoded
248 * lines are at most 76 characters, but we should be liberal about what
251 if (fgets (line, MIN ((ssize_t)sizeof (line), len + 1), s->fpin) == NULL)
254 linelen = strlen(line);
258 * inspect the last character we read so we can tell if we got the
261 last = linelen ? line[linelen - 1] : 0;
263 /* chop trailing whitespace if we got the full line */
266 while (linelen > 0 && ISSPACE (line[linelen-1]))
271 /* decode and do character set conversion */
272 qp_decode_line (decline + l, line, &l3, last);
274 mutt_convert_to_state (cd, decline, &l, s);
277 mutt_convert_to_state (cd, 0, 0, s);
278 state_reset_prefix(s);
281 void mutt_decode_base64 (STATE *s, long len, int istext, iconv_t cd)
284 int c1, c2, c3, c4, ch, cr = 0, i;
285 char bufi[BUFI_SIZE];
295 for (i = 0 ; i < 4 && len > 0 ; len--)
297 if ((ch = fgetc (s->fpin)) == EOF)
299 if (ch >= 0 && ch < 128 && (base64val(ch) != -1 || ch == '='))
304 dprint (2, (debugfile, "%s:%d [mutt_decode_base64()]: "
305 "didn't get a multiple of 4 chars.\n", __FILE__, __LINE__));
309 c1 = base64val (buf[0]);
310 c2 = base64val (buf[1]);
311 ch = (c1 << 2) | (c2 >> 4);
313 if (cr && ch != '\n')
318 if (istext && ch == '\r')
325 c3 = base64val (buf[2]);
326 ch = ((c2 & 0xf) << 4) | (c3 >> 2);
328 if (cr && ch != '\n')
333 if (istext && ch == '\r')
338 if (buf[3] == '=') break;
339 c4 = base64val (buf[3]);
340 ch = ((c3 & 0x3) << 6) | c4;
342 if (cr && ch != '\n')
346 if (istext && ch == '\r')
351 if (l + 8 >= sizeof (bufi))
352 mutt_convert_to_state (cd, bufi, &l, s);
355 if (cr) bufi[l++] = '\r';
357 mutt_convert_to_state (cd, bufi, &l, s);
358 mutt_convert_to_state (cd, 0, 0, s);
360 state_reset_prefix(s);
363 unsigned char decode_byte (char ch)
370 void mutt_decode_uuencoded (STATE *s, long len, int istext, iconv_t cd)
372 char tmps[SHORT_STRING];
373 char linelen, c, l, out;
375 char bufi[BUFI_SIZE];
383 if ((fgets(tmps, sizeof(tmps), s->fpin)) == NULL)
385 len -= mutt_strlen(tmps);
386 if ((!mutt_strncmp (tmps, "begin", 5)) && ISSPACE (tmps[5]))
391 if ((fgets(tmps, sizeof(tmps), s->fpin)) == NULL)
393 len -= mutt_strlen(tmps);
394 if (!mutt_strncmp (tmps, "end", 3))
397 linelen = decode_byte (*pt);
399 for (c = 0; c < linelen;)
401 for (l = 2; l <= 6; l += 2)
403 out = decode_byte (*pt) << l;
405 out |= (decode_byte (*pt) >> (6 - l));
411 mutt_convert_to_state (cd, bufi, &k, s);
416 mutt_convert_to_state (cd, bufi, &k, s);
417 mutt_convert_to_state (cd, 0, 0, s);
419 state_reset_prefix(s);
422 /* ----------------------------------------------------------------------------
423 * A (not so) minimal implementation of RFC1563.
426 #define IndentSize (4)
428 enum { RICH_PARAM=0, RICH_BOLD, RICH_UNDERLINE, RICH_ITALIC, RICH_NOFILL,
429 RICH_INDENT, RICH_INDENT_RIGHT, RICH_EXCERPT, RICH_CENTER, RICH_FLUSHLEFT,
430 RICH_FLUSHRIGHT, RICH_COLOR, RICH_LAST_TAG };
433 const char *tag_name;
436 { "param", RICH_PARAM },
437 { "bold", RICH_BOLD },
438 { "italic", RICH_ITALIC },
439 { "underline", RICH_UNDERLINE },
440 { "nofill", RICH_NOFILL },
441 { "excerpt", RICH_EXCERPT },
442 { "indent", RICH_INDENT },
443 { "indentright", RICH_INDENT_RIGHT },
444 { "center", RICH_CENTER },
445 { "flushleft", RICH_FLUSHLEFT },
446 { "flushright", RICH_FLUSHRIGHT },
447 { "flushboth", RICH_FLUSHLEFT },
448 { "color", RICH_COLOR },
449 { "x-color", RICH_COLOR },
453 struct enriched_state
467 int tag_level[RICH_LAST_TAG];
472 static void enriched_wrap (struct enriched_state *stte)
479 if (stte->tag_level[RICH_CENTER] || stte->tag_level[RICH_FLUSHRIGHT])
481 /* Strip trailing white space */
482 size_t y = stte->line_used - 1;
484 while (y && ISSPACE (stte->line[y]))
486 stte->line[y] = '\0';
491 if (stte->tag_level[RICH_CENTER])
493 /* Strip leading whitespace */
496 while (stte->line[y] && ISSPACE (stte->line[y]))
502 for (z = y ; z <= stte->line_used; z++)
504 stte->line[z - y] = stte->line[z];
508 stte->line_used -= y;
513 extra = stte->WrapMargin - stte->line_len - stte->indent_len -
514 (stte->tag_level[RICH_INDENT_RIGHT] * IndentSize);
517 if (stte->tag_level[RICH_CENTER])
522 state_putc (' ', stte->s);
526 else if (stte->tag_level[RICH_FLUSHRIGHT])
531 state_putc (' ', stte->s);
536 state_puts (stte->line, stte->s);
539 state_putc ('\n', stte->s);
540 stte->line[0] = '\0';
543 stte->indent_len = 0;
546 state_puts (stte->s->prefix, stte->s);
547 stte->indent_len += mutt_strlen (stte->s->prefix);
550 if (stte->tag_level[RICH_EXCERPT])
552 x = stte->tag_level[RICH_EXCERPT];
557 state_puts (stte->s->prefix, stte->s);
558 stte->indent_len += mutt_strlen (stte->s->prefix);
562 state_puts ("> ", stte->s);
563 stte->indent_len += mutt_strlen ("> ");
569 stte->indent_len = 0;
570 if (stte->tag_level[RICH_INDENT])
572 x = stte->tag_level[RICH_INDENT] * IndentSize;
573 stte->indent_len += x;
576 state_putc (' ', stte->s);
582 static void enriched_flush (struct enriched_state *stte, int wrap)
584 if (!stte->tag_level[RICH_NOFILL] && (stte->line_len + stte->word_len >
585 (stte->WrapMargin - (stte->tag_level[RICH_INDENT_RIGHT] * IndentSize) -
587 enriched_wrap (stte);
591 stte->buffer[stte->buff_used] = '\0';
592 stte->line_used += stte->buff_used;
593 if (stte->line_used > stte->line_max)
595 stte->line_max = stte->line_used;
596 safe_realloc (&stte->line, stte->line_max + 1);
598 strcat (stte->line, stte->buffer); /* __STRCAT_CHECKED__ */
599 stte->line_len += stte->word_len;
608 static void enriched_putc (int c, struct enriched_state *stte)
610 if (stte->tag_level[RICH_PARAM])
612 if (stte->tag_level[RICH_COLOR])
614 if (stte->param_used + 1 >= stte->param_len)
615 safe_realloc (&stte->param, (stte->param_len += STRING));
617 stte->param[stte->param_used++] = c;
619 return; /* nothing to do */
622 /* see if more space is needed (plus extra for possible rich characters) */
623 if (stte->buff_len < stte->buff_used + 3)
625 stte->buff_len += LONG_STRING;
626 safe_realloc (&stte->buffer, stte->buff_len + 1);
629 if ((!stte->tag_level[RICH_NOFILL] && ISSPACE (c)) || c == '\0' )
632 stte->word_len += 8 - (stte->line_len + stte->word_len) % 8;
636 stte->buffer[stte->buff_used++] = c;
637 enriched_flush (stte, 0);
641 if (stte->s->flags & M_DISPLAY)
643 if (stte->tag_level[RICH_BOLD])
645 stte->buffer[stte->buff_used++] = c;
646 stte->buffer[stte->buff_used++] = '\010';
647 stte->buffer[stte->buff_used++] = c;
649 else if (stte->tag_level[RICH_UNDERLINE])
652 stte->buffer[stte->buff_used++] = '_';
653 stte->buffer[stte->buff_used++] = '\010';
654 stte->buffer[stte->buff_used++] = c;
656 else if (stte->tag_level[RICH_ITALIC])
658 stte->buffer[stte->buff_used++] = c;
659 stte->buffer[stte->buff_used++] = '\010';
660 stte->buffer[stte->buff_used++] = '_';
664 stte->buffer[stte->buff_used++] = c;
669 stte->buffer[stte->buff_used++] = c;
675 static void enriched_puts (char *s, struct enriched_state *stte)
679 if (stte->buff_len < stte->buff_used + mutt_strlen(s))
681 stte->buff_len += LONG_STRING;
682 safe_realloc (&stte->buffer, stte->buff_len + 1);
687 stte->buffer[stte->buff_used++] = *c;
692 static void enriched_set_flags (const char *tag, struct enriched_state *stte)
694 const char *tagptr = tag;
700 for (i = 0, j = -1; EnrichedTags[i].tag_name; i++)
701 if (ascii_strcasecmp (EnrichedTags[i].tag_name,tagptr) == 0)
703 j = EnrichedTags[i].index;
709 if (j == RICH_CENTER || j == RICH_FLUSHLEFT || j == RICH_FLUSHRIGHT)
710 enriched_flush (stte, 1);
714 if (stte->tag_level[j]) /* make sure not to go negative */
715 stte->tag_level[j]--;
716 if ((stte->s->flags & M_DISPLAY) && j == RICH_PARAM && stte->tag_level[RICH_COLOR])
718 stte->param[stte->param_used] = '\0';
719 if (!ascii_strcasecmp(stte->param, "black"))
721 enriched_puts("\033[30m", stte);
723 else if (!ascii_strcasecmp(stte->param, "red"))
725 enriched_puts("\033[31m", stte);
727 else if (!ascii_strcasecmp(stte->param, "green"))
729 enriched_puts("\033[32m", stte);
731 else if (!ascii_strcasecmp(stte->param, "yellow"))
733 enriched_puts("\033[33m", stte);
735 else if (!ascii_strcasecmp(stte->param, "blue"))
737 enriched_puts("\033[34m", stte);
739 else if (!ascii_strcasecmp(stte->param, "magenta"))
741 enriched_puts("\033[35m", stte);
743 else if (!ascii_strcasecmp(stte->param, "cyan"))
745 enriched_puts("\033[36m", stte);
747 else if (!ascii_strcasecmp(stte->param, "white"))
749 enriched_puts("\033[37m", stte);
752 if ((stte->s->flags & M_DISPLAY) && j == RICH_COLOR)
754 enriched_puts("\033[0m", stte);
757 /* flush parameter buffer when closing the tag */
760 stte->param_used = 0;
761 stte->param[0] = '\0';
765 stte->tag_level[j]++;
767 if (j == RICH_EXCERPT)
768 enriched_flush(stte, 1);
772 void text_enriched_handler (BODY *a, STATE *s)
775 TEXT, LANGLE, TAG, BOGUS_TAG, NEWLINE, ST_EOF, DONE
778 long bytes = a->length;
779 struct enriched_state stte;
782 char tag[LONG_STRING + 1];
784 memset (&stte, 0, sizeof (stte));
786 stte.WrapMargin = ((s->flags & M_DISPLAY) ? (COLS-4) : ((COLS-4)<72)?(COLS-4):72);
787 stte.line_max = stte.WrapMargin * 4;
788 stte.line = (char *) safe_calloc (1, stte.line_max + 1);
789 stte.param = (char *) safe_calloc (1, STRING);
791 stte.param_len = STRING;
796 state_puts (s->prefix, s);
797 stte.indent_len += mutt_strlen (s->prefix);
800 while (state != DONE)
804 if (!bytes || (c = fgetc (s->fpin)) == EOF)
820 if (stte.tag_level[RICH_NOFILL])
822 enriched_flush (&stte, 1);
826 enriched_putc (' ', &stte);
832 enriched_putc (c, &stte);
839 enriched_putc (c, &stte);
848 /* Yes, fall through (it wasn't a <<, so this char is first in TAG) */
853 enriched_set_flags (tag, &stte);
856 else if (tag_len < LONG_STRING) /* ignore overly long tags */
869 enriched_flush (&stte, 1);
879 enriched_putc ('\0', &stte);
880 enriched_flush (&stte, 1);
884 case DONE: /* not reached, but gcc complains if this is absent */
889 state_putc ('\n', s); /* add a final newline */
891 FREE (&(stte.buffer));
893 FREE (&(stte.param));
897 * An implementation of RFC 2646.
899 * NOTE: This still has to be made UTF-8 aware.
903 #define FLOWED_MAX 77
905 static void flowed_quote (STATE *s, int level)
911 if (option (OPTTEXTFLOWED))
914 state_puts (s->prefix, s);
917 for (i = 0; i < level; i++)
921 static int flowed_maybe_quoted (char *cont)
923 return regexec ((regex_t *) QuoteRegexp.rx, cont, 0, NULL, 0) == 0;
926 static void flowed_stuff (STATE *s, char *cont, int level)
928 if (!option (OPTTEXTFLOWED) && !(s->flags & M_DISPLAY))
931 if (s->flags & M_DISPLAY)
934 * Hack: If we are in the beginning of the line and there is
935 * some text on the line which looks like it's quoted, turn off
936 * ANSI colors, so quote coloring doesn't affect this line.
938 if (*cont && !level && !mutt_strcmp (Pager, "builtin") && flowed_maybe_quoted (cont))
939 state_puts ("\033[0m",s);
941 else if ((!(s->flags & M_PRINTING)) &&
942 ((*cont == ' ') || (*cont == '>') || (!level && !mutt_strncmp (cont, "From ", 5))))
946 static char *flowed_skip_indent (char *prefix, char *cont)
948 for (; *cont == ' ' || *cont == '\t'; cont++)
954 static int flowed_visual_strlen (char *l, int i)
960 j += 8 - ((i + j) % 8);
969 static void text_plain_flowed_handler (BODY *a, STATE *s)
971 char line[LONG_STRING];
972 char indent[LONG_STRING];
986 int bytes = a->length;
987 int actually_wrap = 0;
1000 if ((flowed_max = FLOWED_MAX) > COLS - 3)
1001 flowed_max = COLS - 3;
1002 if (flowed_max > COLS - WrapMargin)
1003 flowed_max = COLS - WrapMargin;
1004 if (flowed_max <= 0)
1007 flowed_max = COLS - WrapMargin;
1008 if (flowed_max <= 0)
1011 fprintf(stderr,"flowed_max = %d\n",flowed_max);
1013 while (bytes > 0 && fgets (line, sizeof (line), s->fpin))
1015 bytes -= strlen (line);
1021 * If the last line wasn't fully read, this is the
1022 * tail of some line.
1024 actually_wrap = !last_full;
1026 if ((t = strrchr (line, '\r')) || (t = strrchr (line, '\n')))
1031 else if ((t = strrchr (line, ' ')) || (t = strrchr (line, '\t')))
1034 * Bad: We have a line of more than LONG_STRING characters.
1035 * (Which SHOULD NOT happen, since lines SHOULD be <= 79
1038 * Try to simulate a soft line break at a word boundary.
1039 * Handle the rest of the line next time.
1041 * Give up when we have a single word which is longer than
1042 * LONG_STRING characters. It will just be split into parts,
1043 * with a hard line break in between.
1053 fseek (s->fpin, -l, SEEK_CUR);
1060 last_quoted = quoted;
1065 * We are in the beginning of a new line. Determine quote level
1066 * and indentation prefix
1068 for (quoted = 0; line[quoted] == '>'; quoted++)
1071 cont = line + quoted;
1073 /* undo space stuffing */
1077 /* If there is an indentation, record it. */
1078 cont = flowed_skip_indent (indent, cont);
1079 i_add = flowed_visual_strlen (indent, quoted + add);
1084 * This is just the tail of some over-long line. Keep
1085 * indentation and quote levels. Don't unstuff.
1090 /* If we have a change in quoting depth, wrap. */
1092 if (col && last_quoted != quoted && last_quoted >= 0)
1094 state_putc ('\n', s);
1108 /* try to find a point for word wrapping */
1111 l = flowed_visual_strlen (cont, quoted + i_add + add + col);
1112 rl = mutt_strlen (cont);
1113 if (quoted + i_add + add + col + l > flowed_max)
1117 for (tmpcol = quoted + i_add + add + col, t = cont;
1118 *t && tmpcol < flowed_max; t++)
1120 if (*t == ' ' || *t == '\t')
1123 tmpcol = (tmpcol & ~7) + 8;
1135 /* We seem to be desperate. Get me a new line, and retry. */
1136 if (!tail && (quoted + add + col + i_add + l > flowed_max) && col)
1138 state_putc ('\n', s);
1143 /* Detect soft line breaks. */
1144 if (!soft && ascii_strcmp (cont, "-- "))
1146 lc = strrchr (cont, ' ');
1147 if (lc && lc[1] == '\0')
1152 * If we are in the beginning of an output line, do quoting
1155 * We have to temporarily assemble the line since display
1156 * stuffing (i.e., turning off quote coloring) may depend on
1157 * the line's actual content. You never know what people put
1158 * into their regular expressions.
1162 char tmp[LONG_STRING];
1163 snprintf (tmp, sizeof (tmp), "%s%s", indent, cont);
1165 flowed_quote (s, quoted);
1166 flowed_stuff (s, tmp, quoted + add);
1168 state_puts (indent, s);
1171 /* output the text */
1172 state_puts (cont, s);
1173 col += flowed_visual_strlen (cont, quoted + i_add + add + col);
1175 /* possibly indicate a soft line break */
1178 state_putc (' ', s);
1183 * Wrap if this display line corresponds to a
1184 * text line. Don't wrap if we changed the line.
1186 if (!soft || (!actually_wrap && full))
1188 state_putc ('\n', s);
1196 state_putc ('\n', s);
1201 static int get_quote_level(char * line) {
1203 for (quoted = 0; line[quoted] == '>'; quoted++);
1207 static void print_flowed_line(char * line, STATE *s,int ql) {
1209 char * pos, * oldpos;
1211 int len = strlen(line);
1214 fprintf(stderr,"prefix = `%s'\n",s->prefix);
1216 width = COLS - WrapMargin - ql - 1;
1217 if (option(OPTSTUFFQUOTED))
1222 /* fprintf(stderr,"print_flowed_line will print `%s' with ql = %d\n",line,ql); */
1224 if (strlen(line)==0) {
1226 state_puts(s->prefix,s);
1227 for (i=0;i<ql;++i) state_putc('>',s);
1228 if (option(OPTSTUFFQUOTED))
1236 if (ql>0 && isblank(*oldpos)) ++oldpos;
1238 /* fprintf(stderr,"oldpos = %p line+len = %p\n",oldpos,line+len); */
1240 for (;oldpos<line+len;pos+=width) {
1241 /* fprintf(stderr,"outer for loop\n"); */
1242 if (pos<line+len) { /* only search a new position when we're not over the end of the string w/ pos */
1243 /* fprintf(stderr,"if 1\n"); */
1245 /* fprintf(stderr,"if 2: good luck! found a space\n"); */
1249 /* fprintf(stderr,"if 2: else\n"); */
1251 while (pos>=oldpos && !isspace(*pos)) {
1252 /* fprintf(stderr,"pos(%p) > oldpos(%p)\n",pos,oldpos); */
1256 /* fprintf(stderr,"wow, no space found, searching the other direction\n"); */
1258 while (pos < line+len && *pos && !isspace(*pos)) {
1259 /* fprintf(stderr,"pos(%p) < line+len(%p)\n",pos,line+len); */
1262 /* fprintf(stderr,"found a space pos = %p\n",pos); */
1268 /* fprintf(stderr,"if 1 else\n"); */
1271 state_puts(s->prefix,s);
1274 if (option(OPTSTUFFQUOTED) && (ql>0 || s->prefix)) state_putc(' ',s);
1275 state_puts(oldpos,s);
1276 /* fprintf(stderr,"print_flowed_line: `%s'\n",oldpos); */
1282 /*state_puts(line,s);
1283 state_putc('\n',s);*/
1286 static void text_plain_flowed_handler (BODY *a, STATE *s)
1288 int bytes = a->length;
1289 char buf[LONG_STRING];
1290 char * curline = strdup("");
1292 unsigned int curline_len = 1;
1293 unsigned int quotelevel = 0, newql = 0;
1294 int append_next_line = 0;
1297 while (bytes > 0 && fgets(buf,sizeof(buf),s->fpin)) {
1299 /* fprintf(stderr,"read `%s'",buf); */
1300 bytes -= strlen(buf);
1302 newql = get_quote_level(buf);
1304 if ((t=strrchr(buf,'\n')) || (t=strrchr(buf,'\r'))) {
1306 if (strlen(curline)>0 && curline[strlen(curline)-1]==' ' && newql==quotelevel && strcmp(curline+quotelevel,"-- ")!=0) {
1307 if (buf[newql]==' ')
1308 curline[strlen(curline)-1] = '\0';
1310 curline = realloc(curline,curline_len+strlen(buf));
1311 if (curline_len == 1) *curline = '\0';
1312 curline_len+=strlen(buf);
1313 safe_strncat(curline,curline_len,buf+newql,strlen(buf+newql));
1318 print_flowed_line(curline,s,quotelevel);
1322 curline = realloc(curline,curline_len+strlen(buf));
1323 if (curline_len == 1) *curline = '\0';
1324 curline_len+=strlen(buf);
1325 safe_strncat(curline,curline_len,buf,strlen(buf));
1329 append_next_line = 1;
1330 /* @todo: add handling of very long lines */
1334 print_flowed_line(curline,s,quotelevel);
1343 #define TXTENRICHED 3
1345 static void alternative_handler (BODY *a, STATE *s)
1347 BODY *choice = NULL;
1354 if (a->encoding == ENCBASE64 || a->encoding == ENCQUOTEDPRINTABLE ||
1355 a->encoding == ENCUUENCODED)
1359 fstat (fileno (s->fpin), &st);
1360 b = mutt_new_body ();
1361 b->length = (long) st.st_size;
1362 b->parts = mutt_parse_multipart (s->fpin,
1363 mutt_get_parameter ("boundary", a->parameter),
1364 (long) st.st_size, ascii_strcasecmp ("digest", a->subtype) == 0);
1371 /* First, search list of prefered types */
1372 t = AlternativeOrderList;
1373 while (t && !choice)
1376 int btlen; /* length of basetype */
1377 int wild; /* do we have a wildcard to match all subtypes? */
1379 c = strchr (t->data, '/');
1382 wild = (c[1] == '*' && c[2] == 0);
1383 btlen = c - t->data;
1388 btlen = mutt_strlen (t->data);
1397 const char *bt = TYPE(b);
1398 if (!ascii_strncasecmp (bt, t->data, btlen) && bt[btlen] == 0)
1400 /* the basetype matches */
1401 if (wild || !ascii_strcasecmp (t->data + btlen + 1, b->subtype))
1411 /* Next, look for an autoviewable type */
1420 snprintf (buf, sizeof (buf), "%s/%s", TYPE (b), b->subtype);
1421 if (mutt_is_autoview (b, buf))
1423 rfc1524_entry *entry = rfc1524_new_entry ();
1425 if (rfc1524_mailcap_lookup (b, buf, entry, M_AUTOVIEW))
1429 rfc1524_free_entry (&entry);
1435 /* Then, look for a text entry */
1444 if (b->type == TYPETEXT)
1446 if (! ascii_strcasecmp ("plain", b->subtype) && type <= TXTPLAIN)
1451 else if (! ascii_strcasecmp ("enriched", b->subtype) && type <= TXTENRICHED)
1456 else if (! ascii_strcasecmp ("html", b->subtype) && type <= TXTHTML)
1466 /* Finally, look for other possibilities */
1475 if (mutt_can_decode (b))
1483 if (s->flags & M_DISPLAY && !option (OPTWEED))
1485 fseek (s->fpin, choice->hdr_offset, 0);
1486 mutt_copy_bytes(s->fpin, s->fpout, choice->offset-choice->hdr_offset);
1488 mutt_body_handler (choice, s);
1490 else if (s->flags & M_DISPLAY)
1492 /* didn't find anything that we could display! */
1493 state_mark_attach (s);
1494 state_puts(_("[-- Error: Could not display any parts of Multipart/Alternative! --]\n"), s);
1501 /* handles message/rfc822 body parts */
1502 void message_handler (BODY *a, STATE *s)
1508 off_start = ftell (s->fpin);
1509 if (a->encoding == ENCBASE64 || a->encoding == ENCQUOTEDPRINTABLE ||
1510 a->encoding == ENCUUENCODED)
1512 fstat (fileno (s->fpin), &st);
1513 b = mutt_new_body ();
1514 b->length = (long) st.st_size;
1515 b->parts = mutt_parse_messageRFC822 (s->fpin, b);
1522 mutt_copy_hdr (s->fpin, s->fpout, off_start, b->parts->offset,
1523 (((s->flags & M_WEED) || ((s->flags & (M_DISPLAY|M_PRINTING)) && option (OPTWEED))) ? (CH_WEED | CH_REORDER) : 0) |
1524 (s->prefix ? CH_PREFIX : 0) | CH_DECODE | CH_FROM, s->prefix);
1527 state_puts (s->prefix, s);
1528 state_putc ('\n', s);
1530 mutt_body_handler (b->parts, s);
1533 if (a->encoding == ENCBASE64 || a->encoding == ENCQUOTEDPRINTABLE ||
1534 a->encoding == ENCUUENCODED)
1535 mutt_free_body (&b);
1538 /* returns 1 if decoding the attachment will produce output */
1539 int mutt_can_decode (BODY *a)
1543 snprintf (type, sizeof (type), "%s/%s", TYPE (a), a->subtype);
1544 if (mutt_is_autoview (a, type))
1545 return (rfc1524_mailcap_lookup (a, type, NULL, M_AUTOVIEW));
1546 else if (a->type == TYPETEXT)
1548 else if (a->type == TYPEMESSAGE)
1550 else if (a->type == TYPEMULTIPART)
1556 if (ascii_strcasecmp (a->subtype, "signed") == 0 ||
1557 ascii_strcasecmp (a->subtype, "encrypted") == 0)
1561 for (p = a->parts; p; p = p->next)
1563 if (mutt_can_decode (p))
1568 else if (WithCrypto && a->type == TYPEAPPLICATION)
1570 if ((WithCrypto & APPLICATION_PGP) && mutt_is_application_pgp(a))
1572 if ((WithCrypto & APPLICATION_SMIME) && mutt_is_application_smime(a))
1579 void multipart_handler (BODY *a, STATE *s)
1586 if (a->encoding == ENCBASE64 || a->encoding == ENCQUOTEDPRINTABLE ||
1587 a->encoding == ENCUUENCODED)
1589 fstat (fileno (s->fpin), &st);
1590 b = mutt_new_body ();
1591 b->length = (long) st.st_size;
1592 b->parts = mutt_parse_multipart (s->fpin,
1593 mutt_get_parameter ("boundary", a->parameter),
1594 (long) st.st_size, ascii_strcasecmp ("digest", a->subtype) == 0);
1599 for (p = b->parts, count = 1; p; p = p->next, count++)
1601 if (s->flags & M_DISPLAY)
1603 state_mark_attach (s);
1604 state_printf (s, _("[-- Attachment #%d"), count);
1605 if (p->description || p->filename || p->form_name)
1607 state_puts (": ", s);
1608 state_puts (p->description ? p->description :
1609 p->filename ? p->filename : p->form_name, s);
1611 state_puts (" --]\n", s);
1613 mutt_pretty_size (length, sizeof (length), p->length);
1615 state_mark_attach (s);
1616 state_printf (s, _("[-- Type: %s/%s, Encoding: %s, Size: %s --]\n"),
1617 TYPE (p), p->subtype, ENCODING (p->encoding), length);
1618 if (!option (OPTWEED))
1620 fseek (s->fpin, p->hdr_offset, 0);
1621 mutt_copy_bytes(s->fpin, s->fpout, p->offset-p->hdr_offset);
1624 state_putc ('\n', s);
1628 if (p->description && mutt_can_decode (p))
1629 state_printf (s, "Content-Description: %s\n", p->description);
1632 state_printf(s, "%s: \n", p->form_name);
1635 mutt_body_handler (p, s);
1636 state_putc ('\n', s);
1637 if ((s->flags & M_REPLYING)
1638 && (option (OPTINCLUDEONLYFIRST)) && (s->flags & M_FIRSTDONE))
1642 if (a->encoding == ENCBASE64 || a->encoding == ENCQUOTEDPRINTABLE ||
1643 a->encoding == ENCUUENCODED)
1644 mutt_free_body (&b);
1647 void autoview_handler (BODY *a, STATE *s)
1649 rfc1524_entry *entry = rfc1524_new_entry ();
1650 char buffer[LONG_STRING];
1652 char command[LONG_STRING];
1653 char tempfile[_POSIX_PATH_MAX] = "";
1661 snprintf (type, sizeof (type), "%s/%s", TYPE (a), a->subtype);
1662 rfc1524_mailcap_lookup (a, type, entry, M_AUTOVIEW);
1664 fname = safe_strdup (a->filename);
1665 mutt_sanitize_filename (fname, 1);
1666 rfc1524_expand_filename (entry->nametemplate, fname, tempfile, sizeof (tempfile));
1671 strfcpy (command, entry->command, sizeof (command));
1673 /* rfc1524_expand_command returns 0 if the file is required */
1674 piped = rfc1524_expand_command (a, tempfile, type, command, sizeof (command));
1676 if (s->flags & M_DISPLAY)
1678 state_mark_attach (s);
1679 state_printf (s, _("[-- Autoview using %s --]\n"), command);
1680 mutt_message(_("Invoking autoview command: %s"),command);
1683 if ((fpin = safe_fopen (tempfile, "w+")) == NULL)
1685 mutt_perror ("fopen");
1686 rfc1524_free_entry (&entry);
1690 mutt_copy_bytes (s->fpin, fpin, a->length);
1694 safe_fclose (&fpin);
1695 thepid = mutt_create_filter (command, NULL, &fpout, &fperr);
1702 thepid = mutt_create_filter_fd (command, NULL, &fpout, &fperr,
1703 fileno(fpin), -1, -1);
1708 mutt_perror _("Can't create filter");
1709 if (s->flags & M_DISPLAY)
1711 state_mark_attach (s);
1712 state_printf (s, _("[-- Can't run %s. --]\n"), command);
1719 while (fgets (buffer, sizeof(buffer), fpout) != NULL)
1721 state_puts (s->prefix, s);
1722 state_puts (buffer, s);
1724 /* check for data on stderr */
1725 if (fgets (buffer, sizeof(buffer), fperr))
1727 if (s->flags & M_DISPLAY)
1729 state_mark_attach (s);
1730 state_printf (s, _("[-- Autoview stderr of %s --]\n"), command);
1733 state_puts (s->prefix, s);
1734 state_puts (buffer, s);
1735 while (fgets (buffer, sizeof(buffer), fperr) != NULL)
1737 state_puts (s->prefix, s);
1738 state_puts (buffer, s);
1744 mutt_copy_stream (fpout, s->fpout);
1745 /* Check for stderr messages */
1746 if (fgets (buffer, sizeof(buffer), fperr))
1748 if (s->flags & M_DISPLAY)
1750 state_mark_attach (s);
1751 state_printf (s, _("[-- Autoview stderr of %s --]\n"),
1755 state_puts (buffer, s);
1756 mutt_copy_stream (fperr, s->fpout);
1761 safe_fclose (&fpout);
1762 safe_fclose (&fperr);
1764 mutt_wait_filter (thepid);
1766 safe_fclose (&fpin);
1768 mutt_unlink (tempfile);
1770 if (s->flags & M_DISPLAY)
1771 mutt_clear_error ();
1773 rfc1524_free_entry (&entry);
1776 static void external_body_handler (BODY *b, STATE *s)
1778 const char *access_type;
1779 const char *expiration;
1782 access_type = mutt_get_parameter ("access-type", b->parameter);
1785 if (s->flags & M_DISPLAY)
1787 state_mark_attach (s);
1788 state_puts (_("[-- Error: message/external-body has no access-type parameter --]\n"), s);
1793 expiration = mutt_get_parameter ("expiration", b->parameter);
1795 expire = mutt_parse_date (expiration, NULL);
1799 if (!ascii_strcasecmp (access_type, "x-mutt-deleted"))
1801 if (s->flags & (M_DISPLAY|M_PRINTING))
1804 char pretty_size[10];
1806 state_mark_attach (s);
1807 state_printf (s, _("[-- This %s/%s attachment "),
1808 TYPE(b->parts), b->parts->subtype);
1809 length = mutt_get_parameter ("length", b->parameter);
1812 mutt_pretty_size (pretty_size, sizeof (pretty_size),
1813 strtol (length, NULL, 10));
1814 state_printf (s, _("(size %s bytes) "), pretty_size);
1816 state_puts (_("has been deleted --]\n"), s);
1820 state_mark_attach (s);
1821 state_printf (s, _("[-- on %s --]\n"), expiration);
1823 if (b->parts->filename)
1825 state_mark_attach (s);
1826 state_printf (s, _("[-- name: %s --]\n"), b->parts->filename);
1829 mutt_copy_hdr (s->fpin, s->fpout, ftell (s->fpin), b->parts->offset,
1830 (option (OPTWEED) ? (CH_WEED | CH_REORDER) : 0) |
1834 else if(expiration && expire < time(NULL))
1836 if (s->flags & M_DISPLAY)
1838 state_mark_attach (s);
1839 state_printf (s, _("[-- This %s/%s attachment is not included, --]\n"),
1840 TYPE(b->parts), b->parts->subtype);
1841 state_attach_puts (_("[-- and the indicated external source has --]\n"
1842 "[-- expired. --]\n"), s);
1844 mutt_copy_hdr(s->fpin, s->fpout, ftell (s->fpin), b->parts->offset,
1845 (option (OPTWEED) ? (CH_WEED | CH_REORDER) : 0) |
1851 if (s->flags & M_DISPLAY)
1853 state_mark_attach (s);
1855 _("[-- This %s/%s attachment is not included, --]\n"),
1856 TYPE (b->parts), b->parts->subtype);
1857 state_mark_attach (s);
1859 _("[-- and the indicated access-type %s is unsupported --]\n"),
1861 mutt_copy_hdr (s->fpin, s->fpout, ftell (s->fpin), b->parts->offset,
1862 (option (OPTWEED) ? (CH_WEED | CH_REORDER) : 0) |
1868 void mutt_decode_attachment (BODY *b, STATE *s)
1870 int istext = mutt_is_text_part (b);
1871 iconv_t cd = (iconv_t)(-1);
1875 if (istext && s->flags & M_CHARCONV)
1877 char *charset = mutt_get_parameter ("charset", b->parameter);
1878 if (charset && Charset)
1879 cd = mutt_iconv_open (Charset, charset, M_ICONV_HOOK_FROM);
1882 fseek (s->fpin, b->offset, 0);
1883 switch (b->encoding)
1885 case ENCQUOTEDPRINTABLE:
1886 mutt_decode_quoted (s, b->length, istext, cd);
1889 mutt_decode_base64 (s, b->length, istext, cd);
1892 mutt_decode_uuencoded (s, b->length, istext, cd);
1895 mutt_decode_xbit (s, b->length, istext, cd);
1899 if (cd != (iconv_t)(-1))
1903 void mutt_body_handler (BODY *b, STATE *s)
1908 char tempfile[_POSIX_PATH_MAX];
1909 handler_t handler = NULL;
1911 size_t tmplength = 0;
1914 int oflags = s->flags;
1916 /* first determine which handler to use to process this part */
1918 snprintf (type, sizeof (type), "%s/%s", TYPE (b), b->subtype);
1919 if (mutt_is_autoview (b, type))
1921 rfc1524_entry *entry = rfc1524_new_entry ();
1923 if (rfc1524_mailcap_lookup (b, type, entry, M_AUTOVIEW))
1925 handler = autoview_handler;
1926 s->flags &= ~M_CHARCONV;
1928 rfc1524_free_entry (&entry);
1930 else if (b->type == TYPETEXT)
1932 if (ascii_strcasecmp ("plain", b->subtype) == 0)
1934 /* avoid copying this part twice since removing the transfer-encoding is
1935 * the only operation needed.
1937 if ((WithCrypto & APPLICATION_PGP) && mutt_is_application_pgp (b))
1938 handler = crypt_pgp_application_pgp_handler;
1939 else if (ascii_strcasecmp ("flowed", mutt_get_parameter ("format", b->parameter)) == 0)
1940 handler = text_plain_flowed_handler;
1944 else if (ascii_strcasecmp ("enriched", b->subtype) == 0)
1945 handler = text_enriched_handler;
1946 else /* text body type without a handler */
1949 else if (b->type == TYPEMESSAGE)
1951 if(mutt_is_message_type(b->type, b->subtype))
1952 handler = message_handler;
1953 else if (!ascii_strcasecmp ("delivery-status", b->subtype))
1955 else if (!ascii_strcasecmp ("external-body", b->subtype))
1956 handler = external_body_handler;
1958 else if (b->type == TYPEMULTIPART)
1962 if (ascii_strcasecmp ("alternative", b->subtype) == 0)
1963 handler = alternative_handler;
1964 else if (WithCrypto && ascii_strcasecmp ("signed", b->subtype) == 0)
1966 p = mutt_get_parameter ("protocol", b->parameter);
1969 mutt_error _("Error: multipart/signed has no protocol.");
1970 else if (s->flags & M_VERIFY)
1971 handler = mutt_signed_handler;
1973 else if ((WithCrypto & APPLICATION_PGP)
1974 && mutt_strcasecmp ("encrypted", b->subtype) == 0)
1976 p = mutt_get_parameter ("protocol", b->parameter);
1979 mutt_error _("Error: multipart/encrypted has no protocol parameter!");
1980 else if (ascii_strcasecmp ("application/pgp-encrypted", p) == 0)
1981 handler = crypt_pgp_encrypted_handler;
1985 handler = multipart_handler;
1987 else if (WithCrypto && b->type == TYPEAPPLICATION)
1989 if ((WithCrypto & APPLICATION_PGP) && mutt_is_application_pgp (b))
1990 handler = crypt_pgp_application_pgp_handler;
1991 if ((WithCrypto & APPLICATION_SMIME) && mutt_is_application_smime(b))
1992 handler = crypt_smime_application_smime_handler;
1996 if (plaintext || handler)
1998 fseek (s->fpin, b->offset, 0);
2000 /* see if we need to decode this part before processing it */
2001 if (b->encoding == ENCBASE64 || b->encoding == ENCQUOTEDPRINTABLE ||
2002 b->encoding == ENCUUENCODED || plaintext ||
2003 mutt_is_text_part (b)) /* text subtypes may
2005 * set conversion even
2006 * with 8bit encoding.
2009 int origType = b->type;
2010 char *savePrefix = NULL;
2014 /* decode to a tempfile, saving the original destination */
2016 mutt_mktemp (tempfile);
2017 if ((s->fpout = safe_fopen (tempfile, "w")) == NULL)
2019 mutt_error _("Unable to open temporary file!");
2022 /* decoding the attachment changes the size and offset, so save a copy
2023 * of the "real" values now, and restore them after processing
2025 tmplength = b->length;
2026 tmpoffset = b->offset;
2028 /* if we are decoding binary bodies, we don't want to prefix each
2029 * line with the prefix or else the data will get corrupted.
2031 savePrefix = s->prefix;
2039 mutt_decode_attachment (b, s);
2043 b->length = ftell (s->fpout);
2047 /* restore final destination and substitute the tempfile for input */
2050 s->fpin = safe_fopen (tempfile, "r");
2053 /* restore the prefix */
2054 s->prefix = savePrefix;
2060 /* process the (decoded) body part */
2067 b->length = tmplength;
2068 b->offset = tmpoffset;
2070 /* restore the original source stream */
2075 s->flags |= M_FIRSTDONE;
2077 else if (s->flags & M_DISPLAY)
2079 state_mark_attach (s);
2080 state_printf (s, _("[-- %s/%s is unsupported "), TYPE (b), b->subtype);
2081 if (!option (OPTVIEWATTACH))
2083 if (km_expand_key (type, sizeof(type),
2084 km_find_func (MENU_PAGER, OP_VIEW_ATTACHMENTS)))
2085 fprintf (s->fpout, _("(use '%s' to view this part)"), type);
2087 fputs (_("(need 'view-attachments' bound to key!)"), s->fpout);
2089 fputs (" --]\n", s->fpout);
2093 s->flags = oflags | (s->flags & M_FIRSTDONE);