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 width = COLS - WrapMargin - ql - 1;
1215 if (option(OPTSTUFFQUOTED))
1220 /* fprintf(stderr,"print_flowed_line will print `%s' with ql = %d\n",line,ql); */
1222 if (strlen(line)==0) {
1224 state_puts(s->prefix,s);
1225 for (i=0;i<ql;++i) state_putc('>',s);
1226 if (option(OPTSTUFFQUOTED))
1234 if (ql>0 && isblank(*oldpos)) ++oldpos;
1236 /* fprintf(stderr,"oldpos = %p line+len = %p\n",oldpos,line+len); */
1238 for (;oldpos<line+len;pos+=width) {
1239 /* fprintf(stderr,"outer for loop\n"); */
1240 if (pos<line+len) { /* only search a new position when we're not over the end of the string w/ pos */
1241 /* fprintf(stderr,"if 1\n"); */
1243 /* fprintf(stderr,"if 2: good luck! found a space\n"); */
1247 /* fprintf(stderr,"if 2: else\n"); */
1249 while (pos>=oldpos && !isspace(*pos)) {
1250 /* fprintf(stderr,"pos(%p) > oldpos(%p)\n",pos,oldpos); */
1254 /* fprintf(stderr,"wow, no space found, searching the other direction\n"); */
1256 while (pos < line+len && *pos && !isspace(*pos)) {
1257 /* fprintf(stderr,"pos(%p) < line+len(%p)\n",pos,line+len); */
1260 /* fprintf(stderr,"found a space pos = %p\n",pos); */
1266 /* fprintf(stderr,"if 1 else\n"); */
1269 state_puts(s->prefix,s);
1272 if (option(OPTSTUFFQUOTED) && (ql>0 || s->prefix)) state_putc(' ',s);
1273 state_puts(oldpos,s);
1274 /* fprintf(stderr,"print_flowed_line: `%s'\n",oldpos); */
1280 /*state_puts(line,s);
1281 state_putc('\n',s);*/
1284 static void text_plain_flowed_handler (BODY *a, STATE *s)
1286 int bytes = a->length;
1287 char buf[LONG_STRING];
1288 char * curline = strdup("");
1290 unsigned int curline_len = 1;
1291 unsigned int quotelevel = 0, newql = 0;
1292 int append_next_line = 0;
1295 while (bytes > 0 && fgets(buf,sizeof(buf),s->fpin)) {
1297 /* fprintf(stderr,"read `%s'",buf); */
1298 bytes -= strlen(buf);
1300 newql = get_quote_level(buf);
1302 if ((t=strrchr(buf,'\n')) || (t=strrchr(buf,'\r'))) {
1304 if (strlen(curline)>0 && curline[strlen(curline)-1]==' ' && newql==quotelevel && strcmp(curline+quotelevel,"-- ")!=0) {
1305 if (buf[newql]==' ')
1306 curline[strlen(curline)-1] = '\0';
1308 curline = realloc(curline,curline_len+strlen(buf));
1309 if (curline_len == 1) *curline = '\0';
1310 curline_len+=strlen(buf);
1311 safe_strncat(curline,curline_len,buf+newql,strlen(buf+newql));
1316 print_flowed_line(curline,s,quotelevel);
1320 curline = realloc(curline,curline_len+strlen(buf));
1321 if (curline_len == 1) *curline = '\0';
1322 curline_len+=strlen(buf);
1323 safe_strncat(curline,curline_len,buf,strlen(buf));
1327 append_next_line = 1;
1328 /* @todo: add handling of very long lines */
1332 print_flowed_line(curline,s,quotelevel);
1341 #define TXTENRICHED 3
1343 static void alternative_handler (BODY *a, STATE *s)
1345 BODY *choice = NULL;
1352 if (a->encoding == ENCBASE64 || a->encoding == ENCQUOTEDPRINTABLE ||
1353 a->encoding == ENCUUENCODED)
1357 fstat (fileno (s->fpin), &st);
1358 b = mutt_new_body ();
1359 b->length = (long) st.st_size;
1360 b->parts = mutt_parse_multipart (s->fpin,
1361 mutt_get_parameter ("boundary", a->parameter),
1362 (long) st.st_size, ascii_strcasecmp ("digest", a->subtype) == 0);
1369 /* First, search list of prefered types */
1370 t = AlternativeOrderList;
1371 while (t && !choice)
1374 int btlen; /* length of basetype */
1375 int wild; /* do we have a wildcard to match all subtypes? */
1377 c = strchr (t->data, '/');
1380 wild = (c[1] == '*' && c[2] == 0);
1381 btlen = c - t->data;
1386 btlen = mutt_strlen (t->data);
1395 const char *bt = TYPE(b);
1396 if (!ascii_strncasecmp (bt, t->data, btlen) && bt[btlen] == 0)
1398 /* the basetype matches */
1399 if (wild || !ascii_strcasecmp (t->data + btlen + 1, b->subtype))
1409 /* Next, look for an autoviewable type */
1418 snprintf (buf, sizeof (buf), "%s/%s", TYPE (b), b->subtype);
1419 if (mutt_is_autoview (b, buf))
1421 rfc1524_entry *entry = rfc1524_new_entry ();
1423 if (rfc1524_mailcap_lookup (b, buf, entry, M_AUTOVIEW))
1427 rfc1524_free_entry (&entry);
1433 /* Then, look for a text entry */
1442 if (b->type == TYPETEXT)
1444 if (! ascii_strcasecmp ("plain", b->subtype) && type <= TXTPLAIN)
1449 else if (! ascii_strcasecmp ("enriched", b->subtype) && type <= TXTENRICHED)
1454 else if (! ascii_strcasecmp ("html", b->subtype) && type <= TXTHTML)
1464 /* Finally, look for other possibilities */
1473 if (mutt_can_decode (b))
1481 if (s->flags & M_DISPLAY && !option (OPTWEED))
1483 fseek (s->fpin, choice->hdr_offset, 0);
1484 mutt_copy_bytes(s->fpin, s->fpout, choice->offset-choice->hdr_offset);
1486 mutt_body_handler (choice, s);
1488 else if (s->flags & M_DISPLAY)
1490 /* didn't find anything that we could display! */
1491 state_mark_attach (s);
1492 state_puts(_("[-- Error: Could not display any parts of Multipart/Alternative! --]\n"), s);
1499 /* handles message/rfc822 body parts */
1500 void message_handler (BODY *a, STATE *s)
1506 off_start = ftell (s->fpin);
1507 if (a->encoding == ENCBASE64 || a->encoding == ENCQUOTEDPRINTABLE ||
1508 a->encoding == ENCUUENCODED)
1510 fstat (fileno (s->fpin), &st);
1511 b = mutt_new_body ();
1512 b->length = (long) st.st_size;
1513 b->parts = mutt_parse_messageRFC822 (s->fpin, b);
1520 mutt_copy_hdr (s->fpin, s->fpout, off_start, b->parts->offset,
1521 (((s->flags & M_WEED) || ((s->flags & (M_DISPLAY|M_PRINTING)) && option (OPTWEED))) ? (CH_WEED | CH_REORDER) : 0) |
1522 (s->prefix ? CH_PREFIX : 0) | CH_DECODE | CH_FROM, s->prefix);
1525 state_puts (s->prefix, s);
1526 state_putc ('\n', s);
1528 mutt_body_handler (b->parts, s);
1531 if (a->encoding == ENCBASE64 || a->encoding == ENCQUOTEDPRINTABLE ||
1532 a->encoding == ENCUUENCODED)
1533 mutt_free_body (&b);
1536 /* returns 1 if decoding the attachment will produce output */
1537 int mutt_can_decode (BODY *a)
1541 snprintf (type, sizeof (type), "%s/%s", TYPE (a), a->subtype);
1542 if (mutt_is_autoview (a, type))
1543 return (rfc1524_mailcap_lookup (a, type, NULL, M_AUTOVIEW));
1544 else if (a->type == TYPETEXT)
1546 else if (a->type == TYPEMESSAGE)
1548 else if (a->type == TYPEMULTIPART)
1554 if (ascii_strcasecmp (a->subtype, "signed") == 0 ||
1555 ascii_strcasecmp (a->subtype, "encrypted") == 0)
1559 for (p = a->parts; p; p = p->next)
1561 if (mutt_can_decode (p))
1566 else if (WithCrypto && a->type == TYPEAPPLICATION)
1568 if ((WithCrypto & APPLICATION_PGP) && mutt_is_application_pgp(a))
1570 if ((WithCrypto & APPLICATION_SMIME) && mutt_is_application_smime(a))
1577 void multipart_handler (BODY *a, STATE *s)
1584 if (a->encoding == ENCBASE64 || a->encoding == ENCQUOTEDPRINTABLE ||
1585 a->encoding == ENCUUENCODED)
1587 fstat (fileno (s->fpin), &st);
1588 b = mutt_new_body ();
1589 b->length = (long) st.st_size;
1590 b->parts = mutt_parse_multipart (s->fpin,
1591 mutt_get_parameter ("boundary", a->parameter),
1592 (long) st.st_size, ascii_strcasecmp ("digest", a->subtype) == 0);
1597 for (p = b->parts, count = 1; p; p = p->next, count++)
1599 if (s->flags & M_DISPLAY)
1601 state_mark_attach (s);
1602 state_printf (s, _("[-- Attachment #%d"), count);
1603 if (p->description || p->filename || p->form_name)
1605 state_puts (": ", s);
1606 state_puts (p->description ? p->description :
1607 p->filename ? p->filename : p->form_name, s);
1609 state_puts (" --]\n", s);
1611 mutt_pretty_size (length, sizeof (length), p->length);
1613 state_mark_attach (s);
1614 state_printf (s, _("[-- Type: %s/%s, Encoding: %s, Size: %s --]\n"),
1615 TYPE (p), p->subtype, ENCODING (p->encoding), length);
1616 if (!option (OPTWEED))
1618 fseek (s->fpin, p->hdr_offset, 0);
1619 mutt_copy_bytes(s->fpin, s->fpout, p->offset-p->hdr_offset);
1622 state_putc ('\n', s);
1626 if (p->description && mutt_can_decode (p))
1627 state_printf (s, "Content-Description: %s\n", p->description);
1630 state_printf(s, "%s: \n", p->form_name);
1633 mutt_body_handler (p, s);
1634 state_putc ('\n', s);
1635 if ((s->flags & M_REPLYING)
1636 && (option (OPTINCLUDEONLYFIRST)) && (s->flags & M_FIRSTDONE))
1640 if (a->encoding == ENCBASE64 || a->encoding == ENCQUOTEDPRINTABLE ||
1641 a->encoding == ENCUUENCODED)
1642 mutt_free_body (&b);
1645 void autoview_handler (BODY *a, STATE *s)
1647 rfc1524_entry *entry = rfc1524_new_entry ();
1648 char buffer[LONG_STRING];
1650 char command[LONG_STRING];
1651 char tempfile[_POSIX_PATH_MAX] = "";
1659 snprintf (type, sizeof (type), "%s/%s", TYPE (a), a->subtype);
1660 rfc1524_mailcap_lookup (a, type, entry, M_AUTOVIEW);
1662 fname = safe_strdup (a->filename);
1663 mutt_sanitize_filename (fname, 1);
1664 rfc1524_expand_filename (entry->nametemplate, fname, tempfile, sizeof (tempfile));
1669 strfcpy (command, entry->command, sizeof (command));
1671 /* rfc1524_expand_command returns 0 if the file is required */
1672 piped = rfc1524_expand_command (a, tempfile, type, command, sizeof (command));
1674 if (s->flags & M_DISPLAY)
1676 state_mark_attach (s);
1677 state_printf (s, _("[-- Autoview using %s --]\n"), command);
1678 mutt_message(_("Invoking autoview command: %s"),command);
1681 if ((fpin = safe_fopen (tempfile, "w+")) == NULL)
1683 mutt_perror ("fopen");
1684 rfc1524_free_entry (&entry);
1688 mutt_copy_bytes (s->fpin, fpin, a->length);
1692 safe_fclose (&fpin);
1693 thepid = mutt_create_filter (command, NULL, &fpout, &fperr);
1700 thepid = mutt_create_filter_fd (command, NULL, &fpout, &fperr,
1701 fileno(fpin), -1, -1);
1706 mutt_perror _("Can't create filter");
1707 if (s->flags & M_DISPLAY)
1709 state_mark_attach (s);
1710 state_printf (s, _("[-- Can't run %s. --]\n"), command);
1717 while (fgets (buffer, sizeof(buffer), fpout) != NULL)
1719 state_puts (s->prefix, s);
1720 state_puts (buffer, s);
1722 /* check for data on stderr */
1723 if (fgets (buffer, sizeof(buffer), fperr))
1725 if (s->flags & M_DISPLAY)
1727 state_mark_attach (s);
1728 state_printf (s, _("[-- Autoview stderr of %s --]\n"), command);
1731 state_puts (s->prefix, s);
1732 state_puts (buffer, s);
1733 while (fgets (buffer, sizeof(buffer), fperr) != NULL)
1735 state_puts (s->prefix, s);
1736 state_puts (buffer, s);
1742 mutt_copy_stream (fpout, s->fpout);
1743 /* Check for stderr messages */
1744 if (fgets (buffer, sizeof(buffer), fperr))
1746 if (s->flags & M_DISPLAY)
1748 state_mark_attach (s);
1749 state_printf (s, _("[-- Autoview stderr of %s --]\n"),
1753 state_puts (buffer, s);
1754 mutt_copy_stream (fperr, s->fpout);
1759 safe_fclose (&fpout);
1760 safe_fclose (&fperr);
1762 mutt_wait_filter (thepid);
1764 safe_fclose (&fpin);
1766 mutt_unlink (tempfile);
1768 if (s->flags & M_DISPLAY)
1769 mutt_clear_error ();
1771 rfc1524_free_entry (&entry);
1774 static void external_body_handler (BODY *b, STATE *s)
1776 const char *access_type;
1777 const char *expiration;
1780 access_type = mutt_get_parameter ("access-type", b->parameter);
1783 if (s->flags & M_DISPLAY)
1785 state_mark_attach (s);
1786 state_puts (_("[-- Error: message/external-body has no access-type parameter --]\n"), s);
1791 expiration = mutt_get_parameter ("expiration", b->parameter);
1793 expire = mutt_parse_date (expiration, NULL);
1797 if (!ascii_strcasecmp (access_type, "x-mutt-deleted"))
1799 if (s->flags & (M_DISPLAY|M_PRINTING))
1802 char pretty_size[10];
1804 state_mark_attach (s);
1805 state_printf (s, _("[-- This %s/%s attachment "),
1806 TYPE(b->parts), b->parts->subtype);
1807 length = mutt_get_parameter ("length", b->parameter);
1810 mutt_pretty_size (pretty_size, sizeof (pretty_size),
1811 strtol (length, NULL, 10));
1812 state_printf (s, _("(size %s bytes) "), pretty_size);
1814 state_puts (_("has been deleted --]\n"), s);
1818 state_mark_attach (s);
1819 state_printf (s, _("[-- on %s --]\n"), expiration);
1821 if (b->parts->filename)
1823 state_mark_attach (s);
1824 state_printf (s, _("[-- name: %s --]\n"), b->parts->filename);
1827 mutt_copy_hdr (s->fpin, s->fpout, ftell (s->fpin), b->parts->offset,
1828 (option (OPTWEED) ? (CH_WEED | CH_REORDER) : 0) |
1832 else if(expiration && expire < time(NULL))
1834 if (s->flags & M_DISPLAY)
1836 state_mark_attach (s);
1837 state_printf (s, _("[-- This %s/%s attachment is not included, --]\n"),
1838 TYPE(b->parts), b->parts->subtype);
1839 state_attach_puts (_("[-- and the indicated external source has --]\n"
1840 "[-- expired. --]\n"), s);
1842 mutt_copy_hdr(s->fpin, s->fpout, ftell (s->fpin), b->parts->offset,
1843 (option (OPTWEED) ? (CH_WEED | CH_REORDER) : 0) |
1849 if (s->flags & M_DISPLAY)
1851 state_mark_attach (s);
1853 _("[-- This %s/%s attachment is not included, --]\n"),
1854 TYPE (b->parts), b->parts->subtype);
1855 state_mark_attach (s);
1857 _("[-- and the indicated access-type %s is unsupported --]\n"),
1859 mutt_copy_hdr (s->fpin, s->fpout, ftell (s->fpin), b->parts->offset,
1860 (option (OPTWEED) ? (CH_WEED | CH_REORDER) : 0) |
1866 void mutt_decode_attachment (BODY *b, STATE *s)
1868 int istext = mutt_is_text_part (b);
1869 iconv_t cd = (iconv_t)(-1);
1873 if (istext && s->flags & M_CHARCONV)
1875 char *charset = mutt_get_parameter ("charset", b->parameter);
1876 if (charset && Charset)
1877 cd = mutt_iconv_open (Charset, charset, M_ICONV_HOOK_FROM);
1880 fseek (s->fpin, b->offset, 0);
1881 switch (b->encoding)
1883 case ENCQUOTEDPRINTABLE:
1884 mutt_decode_quoted (s, b->length, istext, cd);
1887 mutt_decode_base64 (s, b->length, istext, cd);
1890 mutt_decode_uuencoded (s, b->length, istext, cd);
1893 mutt_decode_xbit (s, b->length, istext, cd);
1897 if (cd != (iconv_t)(-1))
1901 void mutt_body_handler (BODY *b, STATE *s)
1906 char tempfile[_POSIX_PATH_MAX];
1907 handler_t handler = NULL;
1909 size_t tmplength = 0;
1912 int oflags = s->flags;
1914 /* first determine which handler to use to process this part */
1916 snprintf (type, sizeof (type), "%s/%s", TYPE (b), b->subtype);
1917 if (mutt_is_autoview (b, type))
1919 rfc1524_entry *entry = rfc1524_new_entry ();
1921 if (rfc1524_mailcap_lookup (b, type, entry, M_AUTOVIEW))
1923 handler = autoview_handler;
1924 s->flags &= ~M_CHARCONV;
1926 rfc1524_free_entry (&entry);
1928 else if (b->type == TYPETEXT)
1930 if (ascii_strcasecmp ("plain", b->subtype) == 0)
1932 /* avoid copying this part twice since removing the transfer-encoding is
1933 * the only operation needed.
1935 if ((WithCrypto & APPLICATION_PGP) && mutt_is_application_pgp (b))
1936 handler = crypt_pgp_application_pgp_handler;
1937 else if (ascii_strcasecmp ("flowed", mutt_get_parameter ("format", b->parameter)) == 0)
1938 handler = text_plain_flowed_handler;
1942 else if (ascii_strcasecmp ("enriched", b->subtype) == 0)
1943 handler = text_enriched_handler;
1944 else /* text body type without a handler */
1947 else if (b->type == TYPEMESSAGE)
1949 if(mutt_is_message_type(b->type, b->subtype))
1950 handler = message_handler;
1951 else if (!ascii_strcasecmp ("delivery-status", b->subtype))
1953 else if (!ascii_strcasecmp ("external-body", b->subtype))
1954 handler = external_body_handler;
1956 else if (b->type == TYPEMULTIPART)
1960 if (ascii_strcasecmp ("alternative", b->subtype) == 0)
1961 handler = alternative_handler;
1962 else if (WithCrypto && ascii_strcasecmp ("signed", b->subtype) == 0)
1964 p = mutt_get_parameter ("protocol", b->parameter);
1967 mutt_error _("Error: multipart/signed has no protocol.");
1968 else if (s->flags & M_VERIFY)
1969 handler = mutt_signed_handler;
1971 else if ((WithCrypto & APPLICATION_PGP)
1972 && mutt_strcasecmp ("encrypted", b->subtype) == 0)
1974 p = mutt_get_parameter ("protocol", b->parameter);
1977 mutt_error _("Error: multipart/encrypted has no protocol parameter!");
1978 else if (ascii_strcasecmp ("application/pgp-encrypted", p) == 0)
1979 handler = crypt_pgp_encrypted_handler;
1983 handler = multipart_handler;
1985 else if (WithCrypto && b->type == TYPEAPPLICATION)
1987 if ((WithCrypto & APPLICATION_PGP) && mutt_is_application_pgp (b))
1988 handler = crypt_pgp_application_pgp_handler;
1989 if ((WithCrypto & APPLICATION_SMIME) && mutt_is_application_smime(b))
1990 handler = crypt_smime_application_smime_handler;
1994 if (plaintext || handler)
1996 fseek (s->fpin, b->offset, 0);
1998 /* see if we need to decode this part before processing it */
1999 if (b->encoding == ENCBASE64 || b->encoding == ENCQUOTEDPRINTABLE ||
2000 b->encoding == ENCUUENCODED || plaintext ||
2001 mutt_is_text_part (b)) /* text subtypes may
2003 * set conversion even
2004 * with 8bit encoding.
2007 int origType = b->type;
2008 char *savePrefix = NULL;
2012 /* decode to a tempfile, saving the original destination */
2014 mutt_mktemp (tempfile);
2015 if ((s->fpout = safe_fopen (tempfile, "w")) == NULL)
2017 mutt_error _("Unable to open temporary file!");
2020 /* decoding the attachment changes the size and offset, so save a copy
2021 * of the "real" values now, and restore them after processing
2023 tmplength = b->length;
2024 tmpoffset = b->offset;
2026 /* if we are decoding binary bodies, we don't want to prefix each
2027 * line with the prefix or else the data will get corrupted.
2029 savePrefix = s->prefix;
2037 mutt_decode_attachment (b, s);
2041 b->length = ftell (s->fpout);
2045 /* restore final destination and substitute the tempfile for input */
2048 s->fpin = safe_fopen (tempfile, "r");
2051 /* restore the prefix */
2052 s->prefix = savePrefix;
2058 /* process the (decoded) body part */
2065 b->length = tmplength;
2066 b->offset = tmpoffset;
2068 /* restore the original source stream */
2073 s->flags |= M_FIRSTDONE;
2075 else if (s->flags & M_DISPLAY)
2077 state_mark_attach (s);
2078 state_printf (s, _("[-- %s/%s is unsupported "), TYPE (b), b->subtype);
2079 if (!option (OPTVIEWATTACH))
2081 if (km_expand_key (type, sizeof(type),
2082 km_find_func (MENU_PAGER, OP_VIEW_ATTACHMENTS)))
2083 fprintf (s->fpout, _("(use '%s' to view this part)"), type);
2085 fputs (_("(need 'view-attachments' bound to key!)"), s->fpout);
2087 fputs (" --]\n", s->fpout);
2091 s->flags = oflags | (s->flags & M_FIRSTDONE);