Remove warning with poppler 0.90 and greaterĀ¹
[claws.git] / src / procmime.c
1 /*
2  * Claws Mail -- a GTK+ based, lightweight, and fast e-mail client
3  * Copyright (C) 1999-2016 Hiroyuki Yamamoto & The Claws Mail Team
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License as published by
7  * the Free Software Foundation; either version 3 of the License, or
8  * (at your option) any later version.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13  * GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program. If not, see <http://www.gnu.org/licenses/>.
17  */
18
19 #ifdef HAVE_CONFIG_H
20 #  include "config.h"
21 #include "claws-features.h"
22 #endif
23
24 #include <stdio.h>
25
26 #include "defs.h"
27
28 #include <glib.h>
29 #include <glib/gi18n.h>
30 #include <string.h>
31 #if HAVE_LOCALE_H
32 #  include <locale.h>
33 #endif
34 #include <ctype.h>
35 #include <sys/types.h>
36 #include <sys/stat.h>
37 #include <unistd.h>
38 #include <errno.h>
39
40 #include "procmime.h"
41 #include "procheader.h"
42 #include "quoted-printable.h"
43 #include "uuencode.h"
44 #include "unmime.h"
45 #include "html.h"
46 #include "enriched.h"
47 #include "codeconv.h"
48 #include "utils.h"
49 #include "prefs_common.h"
50 #include "prefs_gtk.h"
51 #include "alertpanel.h"
52 #include "timing.h"
53 #include "privacy.h"
54 #include "account.h"
55 #include "file-utils.h"
56
57 static GHashTable *procmime_get_mime_type_table (void);
58 static MimeInfo *procmime_scan_file_short(const gchar *filename);
59 static MimeInfo *procmime_scan_queue_file_short(const gchar *filename);
60 static MimeInfo *procmime_scan_queue_file_full(const gchar *filename, gboolean short_scan);
61
62 MimeInfo *procmime_mimeinfo_new(void)
63 {
64         MimeInfo *mimeinfo;
65
66         mimeinfo = g_new0(MimeInfo, 1);
67
68         mimeinfo->content        = MIMECONTENT_EMPTY;
69         mimeinfo->data.filename  = NULL;
70
71         mimeinfo->type           = MIMETYPE_UNKNOWN;
72         mimeinfo->encoding_type  = ENC_UNKNOWN;
73         mimeinfo->typeparameters = g_hash_table_new(g_str_hash, g_str_equal);
74
75         mimeinfo->disposition    = DISPOSITIONTYPE_UNKNOWN;
76         mimeinfo->dispositionparameters 
77                                  = g_hash_table_new(g_str_hash, g_str_equal);
78
79         mimeinfo->node           = g_node_new(mimeinfo);
80         
81         return mimeinfo;
82 }
83
84 static gboolean procmime_mimeinfo_parameters_destroy(gpointer key, gpointer value, gpointer user_data)
85 {
86         g_free(key);
87         g_free(value);
88         
89         return TRUE;
90 }
91
92 static gchar *forced_charset = NULL;
93
94 void procmime_force_charset(const gchar *str)
95 {
96         g_free(forced_charset);
97         forced_charset = NULL;
98         if (str)
99                 forced_charset = g_strdup(str);
100 }
101
102 static EncodingType forced_encoding = 0;
103
104 void procmime_force_encoding(EncodingType encoding)
105 {
106         forced_encoding = encoding;
107 }
108
109 static gboolean free_func(GNode *node, gpointer data)
110 {
111         MimeInfo *mimeinfo = (MimeInfo *) node->data;
112
113         switch (mimeinfo->content) {
114         case MIMECONTENT_FILE:
115                 if (mimeinfo->tmp)
116                         claws_unlink(mimeinfo->data.filename);
117                 g_free(mimeinfo->data.filename);
118                 break;
119
120         case MIMECONTENT_MEM:
121                 if (mimeinfo->tmp)
122                         g_free(mimeinfo->data.mem);
123         default:
124                 break;
125         }
126
127         g_free(mimeinfo->subtype);
128         g_free(mimeinfo->description);
129         g_free(mimeinfo->id);
130         g_free(mimeinfo->location);
131
132         g_hash_table_foreach_remove(mimeinfo->typeparameters,
133                 procmime_mimeinfo_parameters_destroy, NULL);
134         g_hash_table_destroy(mimeinfo->typeparameters);
135         g_hash_table_foreach_remove(mimeinfo->dispositionparameters,
136                 procmime_mimeinfo_parameters_destroy, NULL);
137         g_hash_table_destroy(mimeinfo->dispositionparameters);
138
139         if (mimeinfo->privacy)
140                 privacy_free_privacydata(mimeinfo->privacy);
141
142         g_free(mimeinfo);
143
144         return FALSE;
145 }
146
147 void procmime_mimeinfo_free_all(MimeInfo **mimeinfo_ptr)
148 {
149         MimeInfo *mimeinfo = *mimeinfo_ptr;
150         GNode *node;
151
152         if (!mimeinfo)
153                 return;
154
155         node = mimeinfo->node;
156         g_node_traverse(node, G_IN_ORDER, G_TRAVERSE_ALL, -1, free_func, NULL);
157
158         g_node_destroy(node);
159
160         *mimeinfo_ptr = NULL;
161 }
162
163 MimeInfo *procmime_mimeinfo_parent(MimeInfo *mimeinfo)
164 {
165         cm_return_val_if_fail(mimeinfo != NULL, NULL);
166         cm_return_val_if_fail(mimeinfo->node != NULL, NULL);
167
168         if (mimeinfo->node->parent == NULL)
169                 return NULL;
170         return (MimeInfo *) mimeinfo->node->parent->data;
171 }
172
173 MimeInfo *procmime_mimeinfo_next(MimeInfo *mimeinfo)
174 {
175         cm_return_val_if_fail(mimeinfo != NULL, NULL);
176         cm_return_val_if_fail(mimeinfo->node != NULL, NULL);
177
178         if (mimeinfo->node->children)
179                 return (MimeInfo *) mimeinfo->node->children->data;
180         if (mimeinfo->node->next)
181                 return (MimeInfo *) mimeinfo->node->next->data;
182
183         if (mimeinfo->node->parent == NULL)
184                 return NULL;
185
186         while (mimeinfo->node->parent != NULL) {
187                 mimeinfo = (MimeInfo *) mimeinfo->node->parent->data;
188                 if (mimeinfo->node->next)
189                         return (MimeInfo *) mimeinfo->node->next->data;
190         }
191
192         return NULL;
193 }
194
195 MimeInfo *procmime_scan_message(MsgInfo *msginfo)
196 {
197         gchar *filename;
198         MimeInfo *mimeinfo;
199
200         filename = procmsg_get_message_file_path(msginfo);
201         if (!filename || !is_file_exist(filename)) {
202                 g_free(filename);
203                 return NULL;
204         }
205
206         if (!folder_has_parent_of_type(msginfo->folder, F_QUEUE) &&
207             !folder_has_parent_of_type(msginfo->folder, F_DRAFT))
208                 mimeinfo = procmime_scan_file(filename);
209         else
210                 mimeinfo = procmime_scan_queue_file(filename);
211         g_free(filename);
212
213         return mimeinfo;
214 }
215
216 MimeInfo *procmime_scan_message_short(MsgInfo *msginfo)
217 {
218         gchar *filename;
219         MimeInfo *mimeinfo;
220
221         filename = procmsg_get_message_file_path(msginfo);
222         if (!filename || !is_file_exist(filename)) {
223                 g_free(filename);
224                 return NULL;
225         }
226
227         if (!folder_has_parent_of_type(msginfo->folder, F_QUEUE) &&
228             !folder_has_parent_of_type(msginfo->folder, F_DRAFT))
229                 mimeinfo = procmime_scan_file_short(filename);
230         else
231                 mimeinfo = procmime_scan_queue_file_short(filename);
232         g_free(filename);
233
234         return mimeinfo;
235 }
236
237 enum
238 {
239         H_CONTENT_TRANSFER_ENCODING = 0,
240         H_CONTENT_TYPE              = 1,
241         H_CONTENT_DISPOSITION       = 2,
242         H_CONTENT_DESCRIPTION       = 3,
243         H_SUBJECT                   = 4
244 };
245
246 const gchar *procmime_mimeinfo_get_parameter(MimeInfo *mimeinfo, const gchar *name)
247 {
248         const gchar *value;
249
250         cm_return_val_if_fail(mimeinfo != NULL, NULL);
251         cm_return_val_if_fail(name != NULL, NULL);
252
253         value = g_hash_table_lookup(mimeinfo->dispositionparameters, name);
254         if (value == NULL)
255                 value = g_hash_table_lookup(mimeinfo->typeparameters, name);
256         
257         return value;
258 }
259
260 #define FLUSH_LASTLINE() {                                                      \
261         if (*lastline != '\0') {                                                \
262                 gint llen = 0;                                                  \
263                 strretchomp(lastline);                                          \
264                 llen = strlen(lastline);                                        \
265                 if (lastline[llen-1] == ' ' && !account_sigsep_matchlist_str_found(lastline, "%s") &&   \
266                     !(llen == 2 && lastline[1] == ' ' && strchr(prefs_common.quote_chars, lastline[0]))) {                                      \
267                         /* this is flowed */                                    \
268                         if (delsp)                                              \
269                                 lastline[llen-1] = '\0';                        \
270                         if (claws_fputs(lastline, outfp) == EOF)                        \
271                                 err = TRUE;                                     \
272                 } else {                                                        \
273                         if (claws_fputs(lastline, outfp) == EOF)                        \
274                                 err = TRUE;                                     \
275                         if (claws_fputs("\n", outfp) == EOF)                            \
276                                 err = TRUE;                                     \
277                 }                                                               \
278         }                                                                       \
279         strcpy(lastline, buf);                                                  \
280 }
281
282 gboolean procmime_decode_content(MimeInfo *mimeinfo)
283 {
284         gchar buf[BUFFSIZE];
285         gint readend;
286         gchar *tmpfilename;
287         FILE *outfp, *infp;
288         GStatBuf statbuf;
289         gboolean tmp_file = FALSE;
290         gboolean flowed = FALSE;
291         gboolean delsp = FALSE; 
292         gboolean err = FALSE;
293         gint state = 0;
294         guint save = 0;
295
296         cm_return_val_if_fail(mimeinfo != NULL, FALSE);
297
298         EncodingType encoding = forced_encoding 
299                                 ? forced_encoding
300                                 : mimeinfo->encoding_type;
301         gchar lastline[BUFFSIZE];
302         memset(lastline, 0, BUFFSIZE);
303
304         if (prefs_common.respect_flowed_format &&
305             mimeinfo->type == MIMETYPE_TEXT && 
306             !strcasecmp(mimeinfo->subtype, "plain")) {
307                 if (procmime_mimeinfo_get_parameter(mimeinfo, "format") != NULL &&
308                     !strcasecmp(procmime_mimeinfo_get_parameter(mimeinfo, "format"),"flowed"))
309                         flowed = TRUE;
310                 if (flowed &&
311                     procmime_mimeinfo_get_parameter(mimeinfo, "delsp") != NULL &&
312                     !strcasecmp(procmime_mimeinfo_get_parameter(mimeinfo, "delsp"),"yes"))
313                         delsp = TRUE;
314         }
315         
316         if (!flowed && (
317              encoding == ENC_UNKNOWN ||
318              encoding == ENC_BINARY ||
319              encoding == ENC_7BIT ||
320              encoding == ENC_8BIT
321             ))
322                 return TRUE;
323
324         if (mimeinfo->type == MIMETYPE_MULTIPART || mimeinfo->type == MIMETYPE_MESSAGE)
325                 return TRUE;
326
327         if (mimeinfo->data.filename == NULL)
328                 return FALSE;
329
330         infp = claws_fopen(mimeinfo->data.filename, "rb");
331         if (!infp) {
332                 FILE_OP_ERROR(mimeinfo->data.filename, "claws_fopen");
333                 return FALSE;
334         }
335         if (fseek(infp, mimeinfo->offset, SEEK_SET) < 0) {
336                 FILE_OP_ERROR(mimeinfo->data.filename, "fseek");
337                 claws_fclose(infp);
338                 return FALSE;
339         }
340
341         outfp = get_tmpfile_in_dir(get_mime_tmp_dir(), &tmpfilename);
342         if (!outfp) {
343                 perror("tmpfile");
344                 claws_fclose(infp);
345                 return FALSE;
346         }
347
348         tmp_file = TRUE;
349         readend = mimeinfo->offset + mimeinfo->length;
350
351         account_sigsep_matchlist_create(); /* FLUSH_LASTLINE will use it */
352
353         *buf = '\0';
354         if (encoding == ENC_QUOTED_PRINTABLE) {
355                 while ((ftell(infp) < readend) && (claws_fgets(buf, sizeof(buf), infp) != NULL)) {
356                         gint len;
357                         len = qp_decode_line(buf);
358                         buf[len] = '\0';
359                         if (!flowed) {
360                                 if (claws_fwrite(buf, 1, len, outfp) < len)
361                                         err = TRUE;
362                         } else {
363                                 FLUSH_LASTLINE();
364                         }
365                 }
366                 if (flowed)
367                         FLUSH_LASTLINE();
368         } else if (encoding == ENC_BASE64) {
369                 gchar outbuf[BUFFSIZE + 1];
370                 gint len, inlen, inread;
371                 gboolean got_error = FALSE;
372                 gboolean uncanonicalize = FALSE;
373                 FILE *tmpfp = NULL;
374                 gboolean null_bytes = FALSE;
375                 gboolean starting = TRUE;
376
377                 if (mimeinfo->type == MIMETYPE_TEXT ||
378                     mimeinfo->type == MIMETYPE_MESSAGE) {
379                         uncanonicalize = TRUE;
380                         tmpfp = my_tmpfile();
381                         if (!tmpfp) {
382                                 perror("my_tmpfile");
383                                 if (tmp_file) 
384                                         claws_fclose(outfp);
385                                 claws_fclose(infp);
386                                 return FALSE;
387                         }
388                 } else
389                         tmpfp = outfp;
390
391                 while ((inlen = MIN(readend - ftell(infp), sizeof(buf))) > 0 && !err) {
392                         inread = claws_fread(buf, 1, inlen, infp);
393                         memset(outbuf, 0, sizeof(buf));
394                         len = g_base64_decode_step(buf, inlen, outbuf, &state, &save);
395                         if (uncanonicalize == TRUE && strlen(outbuf) < len && starting) {
396                                 uncanonicalize = FALSE;
397                                 null_bytes = TRUE;
398                         }
399                         starting = FALSE;
400                         if (((inread != inlen) || len < 0) && !got_error) {
401                                 g_warning("Bad BASE64 content.");
402                                 if (claws_fwrite(_("[Error decoding BASE64]\n"),
403                                         sizeof(gchar),
404                                         strlen(_("[Error decoding BASE64]\n")),
405                                         tmpfp) < strlen(_("[Error decoding BASE64]\n")))
406                                         g_warning("error decoding BASE64");
407                                 got_error = TRUE;
408                                 continue;
409                         } else if (len >= 0) {
410                                 /* print out the error message only once 
411                                  * per block */
412                                 if (null_bytes) {
413                                         /* we won't uncanonicalize, output to outfp directly */
414                                         if (claws_fwrite(outbuf, sizeof(gchar), len, outfp) < len)
415                                                 err = TRUE;
416                                 } else {
417                                         if (claws_fwrite(outbuf, sizeof(gchar), len, tmpfp) < len)
418                                                 err = TRUE;
419                                 }
420                                 got_error = FALSE;
421                         }
422                 }
423
424                 if (uncanonicalize) {
425                         rewind(tmpfp);
426                         while (claws_fgets(buf, sizeof(buf), tmpfp) != NULL) {
427                                 strcrchomp(buf);
428                                 if (claws_fputs(buf, outfp) == EOF)
429                                         err = TRUE;
430                         }
431                 }
432                 if (tmpfp != outfp) {
433                         claws_fclose(tmpfp);
434                 }
435         } else if (encoding == ENC_X_UUENCODE) {
436                 gchar outbuf[BUFFSIZE];
437                 gint len;
438                 gboolean flag = FALSE;
439
440                 while ((ftell(infp) < readend) && (claws_fgets(buf, sizeof(buf), infp) != NULL)) {
441                         if (!flag && strncmp(buf,"begin ", 6)) continue;
442
443                         if (flag) {
444                                 len = fromuutobits(outbuf, buf);
445                                 if (len <= 0) {
446                                         if (len < 0) 
447                                                 g_warning("Bad UUENCODE content (%d)", len);
448                                         break;
449                                 }
450                                 if (claws_fwrite(outbuf, sizeof(gchar), len, outfp) < len)
451                                         err = TRUE;
452                         } else
453                                 flag = TRUE;
454                 }
455         } else {
456                 while ((ftell(infp) < readend) && (claws_fgets(buf, sizeof(buf), infp) != NULL)) {
457                         if (!flowed) {
458                                 if (claws_fputs(buf, outfp) == EOF)
459                                         err = TRUE;
460                         } else {
461                                 FLUSH_LASTLINE();
462                         }
463                 }
464                 if (flowed)
465                         FLUSH_LASTLINE();
466                 if (err == TRUE)
467                         g_warning("write error");
468         }
469
470         claws_fclose(outfp);
471         claws_fclose(infp);
472
473         account_sigsep_matchlist_delete();
474
475         if (err == TRUE) {
476                 return FALSE;
477         }
478
479         if (g_stat(tmpfilename, &statbuf) < 0) {
480                 FILE_OP_ERROR(tmpfilename, "stat");
481                 return FALSE;
482         }
483
484         if (mimeinfo->tmp)
485                 claws_unlink(mimeinfo->data.filename);
486         g_free(mimeinfo->data.filename);
487         mimeinfo->data.filename = tmpfilename;
488         mimeinfo->tmp = TRUE;
489         mimeinfo->offset = 0;
490         mimeinfo->length = statbuf.st_size;
491         mimeinfo->encoding_type = ENC_BINARY;
492
493         return TRUE;
494 }
495
496 #define B64_LINE_SIZE           57
497 #define B64_BUFFSIZE            77
498
499 gboolean procmime_encode_content(MimeInfo *mimeinfo, EncodingType encoding)
500 {
501         FILE *infp = NULL, *outfp;
502         gint len;
503         gchar *tmpfilename;
504         GStatBuf statbuf;
505         gboolean err = FALSE;
506
507         if (mimeinfo->content == MIMECONTENT_EMPTY)
508                 return TRUE;
509
510         if (mimeinfo->encoding_type != ENC_UNKNOWN &&
511             mimeinfo->encoding_type != ENC_BINARY &&
512             mimeinfo->encoding_type != ENC_7BIT &&
513             mimeinfo->encoding_type != ENC_8BIT)
514                 if(!procmime_decode_content(mimeinfo))
515                         return FALSE;
516
517         outfp = get_tmpfile_in_dir(get_mime_tmp_dir(), &tmpfilename);
518         if (!outfp) {
519                 perror("tmpfile");
520                 return FALSE;
521         }
522
523         if (mimeinfo->content == MIMECONTENT_FILE && mimeinfo->data.filename) {
524                 if ((infp = claws_fopen(mimeinfo->data.filename, "rb")) == NULL) {
525                         g_warning("Can't open file %s", mimeinfo->data.filename);
526                         claws_fclose(outfp);
527                         return FALSE;
528                 }
529         } else if (mimeinfo->content == MIMECONTENT_MEM) {
530                 infp = str_open_as_stream(mimeinfo->data.mem);
531                 if (infp == NULL) {
532                         claws_fclose(outfp);
533                         return FALSE;
534                 }
535         } else {
536                 claws_fclose(outfp);
537                 g_warning("Unknown mimeinfo");
538                 return FALSE;
539         }
540
541         if (encoding == ENC_BASE64) {
542                 gchar inbuf[B64_LINE_SIZE], *out;
543                 FILE *tmp_fp = infp;
544                 gchar *tmp_file = NULL;
545
546                 if (mimeinfo->type == MIMETYPE_TEXT ||
547                      mimeinfo->type == MIMETYPE_MESSAGE) {
548                         if (mimeinfo->content == MIMECONTENT_FILE) {
549                                 tmp_file = get_tmp_file();
550                                 if (canonicalize_file(mimeinfo->data.filename, tmp_file) < 0) {
551                                         g_free(tmp_file);
552                                         claws_fclose(infp);
553                                         claws_fclose(outfp);
554                                         return FALSE;
555                                 }
556                                 if ((tmp_fp = claws_fopen(tmp_file, "rb")) == NULL) {
557                                         FILE_OP_ERROR(tmp_file, "claws_fopen");
558                                         claws_unlink(tmp_file);
559                                         g_free(tmp_file);
560                                         claws_fclose(infp);
561                                         claws_fclose(outfp);
562                                         return FALSE;
563                                 }
564                         } else {
565                                 gchar *out = canonicalize_str(mimeinfo->data.mem);
566                                 claws_fclose(infp);
567                                 infp = str_open_as_stream(out);
568                                 tmp_fp = infp;
569                                 g_free(out);
570                                 if (infp == NULL) {
571                                         claws_fclose(outfp);
572                                         return FALSE;
573                                 }
574                         }
575                 }
576
577                 while ((len = claws_fread(inbuf, sizeof(gchar),
578                                     B64_LINE_SIZE, tmp_fp))
579                        == B64_LINE_SIZE) {
580                         out = g_base64_encode(inbuf, B64_LINE_SIZE);
581                         if (claws_fputs(out, outfp) == EOF)
582                                 err = TRUE;
583                         g_free(out);
584                         if (claws_fputc('\n', outfp) == EOF)
585                                 err = TRUE;
586                 }
587                 if (len > 0 && claws_feof(tmp_fp)) {
588                         out = g_base64_encode(inbuf, len);
589                         if (claws_fputs(out, outfp) == EOF)
590                                 err = TRUE;
591                         g_free(out);
592                         if (claws_fputc('\n', outfp) == EOF)
593                                 err = TRUE;
594                 }
595
596                 if (tmp_file) {
597                         claws_fclose(tmp_fp);
598                         claws_unlink(tmp_file);
599                         g_free(tmp_file);
600                 }
601         } else if (encoding == ENC_QUOTED_PRINTABLE) {
602                 gchar inbuf[BUFFSIZE], outbuf[BUFFSIZE * 4];
603
604                 while (claws_fgets(inbuf, sizeof(inbuf), infp) != NULL) {
605                         qp_encode_line(outbuf, inbuf);
606
607                         if (!strncmp("From ", outbuf, sizeof("From ")-1)) {
608                                 gchar *tmpbuf = outbuf;
609                                 
610                                 tmpbuf += sizeof("From ")-1;
611                                 
612                                 if (claws_fputs("=46rom ", outfp) == EOF)
613                                         err = TRUE;
614                                 if (claws_fputs(tmpbuf, outfp) == EOF)
615                                         err = TRUE;
616                         } else {
617                                 if (claws_fputs(outbuf, outfp) == EOF)
618                                         err = TRUE;
619                         }
620                 }
621         } else {
622                 gchar buf[BUFFSIZE];
623
624                 while (claws_fgets(buf, sizeof(buf), infp) != NULL) {
625                         strcrchomp(buf);
626                         if (claws_fputs(buf, outfp) == EOF)
627                                 err = TRUE;
628                 }
629         }
630
631         claws_fclose(outfp);
632         claws_fclose(infp);
633
634         if (err == TRUE)
635                 return FALSE;
636
637         if (mimeinfo->content == MIMECONTENT_FILE) {
638                 if (mimeinfo->tmp && (mimeinfo->data.filename != NULL))
639                         claws_unlink(mimeinfo->data.filename);
640                 g_free(mimeinfo->data.filename);
641         } else if (mimeinfo->content == MIMECONTENT_MEM) {
642                 if (mimeinfo->tmp && (mimeinfo->data.mem != NULL))
643                         g_free(mimeinfo->data.mem);
644         }
645
646         if (g_stat(tmpfilename, &statbuf) < 0) {
647                 FILE_OP_ERROR(tmpfilename, "stat");
648                 return FALSE;
649         }
650         mimeinfo->content = MIMECONTENT_FILE;
651         mimeinfo->data.filename = tmpfilename;
652         mimeinfo->tmp = TRUE;
653         mimeinfo->offset = 0;
654         mimeinfo->length = statbuf.st_size;
655         mimeinfo->encoding_type = encoding;
656
657         return TRUE;
658 }
659
660 static gint procmime_get_part_to_stream(FILE *outfp, MimeInfo *mimeinfo)
661 {
662         FILE *infp;
663         gchar buf[BUFFSIZE];
664         gint restlength, readlength;
665         gint saved_errno = 0;
666
667         cm_return_val_if_fail(outfp != NULL, -1);
668         cm_return_val_if_fail(mimeinfo != NULL, -1);
669
670         if (mimeinfo->encoding_type != ENC_BINARY && !procmime_decode_content(mimeinfo))
671                 return -EINVAL;
672
673         if ((infp = claws_fopen(mimeinfo->data.filename, "rb")) == NULL) {
674                 saved_errno = errno;
675                 FILE_OP_ERROR(mimeinfo->data.filename, "claws_fopen");
676                 return -(saved_errno);
677         }
678         if (fseek(infp, mimeinfo->offset, SEEK_SET) < 0) {
679                 saved_errno = errno;
680                 FILE_OP_ERROR(mimeinfo->data.filename, "fseek");
681                 claws_fclose(infp);
682                 return -(saved_errno);
683         }
684
685         restlength = mimeinfo->length;
686
687         while ((restlength > 0) && ((readlength = claws_fread(buf, 1, restlength > BUFFSIZE ? BUFFSIZE : restlength, infp)) > 0)) {
688                 if (claws_fwrite(buf, 1, readlength, outfp) != readlength) {
689                         saved_errno = errno;
690                         claws_fclose(infp);
691                         return -(saved_errno);
692                 }
693                 restlength -= readlength;
694         }
695
696         claws_fclose(infp);
697         rewind(outfp);
698
699         return 0;
700 }
701
702 gint procmime_get_part(const gchar *outfile, MimeInfo *mimeinfo)
703 {
704         FILE *outfp;
705         gint result;
706         gint saved_errno = 0;
707
708         cm_return_val_if_fail(outfile != NULL, -1);
709
710         if ((outfp = claws_fopen(outfile, "wb")) == NULL) {
711                 saved_errno = errno;
712                 FILE_OP_ERROR(outfile, "claws_fopen");
713                 return -(saved_errno);
714         }
715
716         result = procmime_get_part_to_stream(outfp, mimeinfo);
717
718         if (claws_fclose(outfp) == EOF) {
719                 saved_errno = errno;
720                 FILE_OP_ERROR(outfile, "claws_fclose");
721                 claws_unlink(outfile);
722                 return -(saved_errno);
723         }
724
725         return result;
726 }
727
728 gboolean procmime_scan_text_content(MimeInfo *mimeinfo,
729                 gboolean (*scan_callback)(const gchar *str, gpointer cb_data),
730                 gpointer cb_data) 
731 {
732         FILE *tmpfp;
733         const gchar *src_codeset;
734         gboolean conv_fail = FALSE;
735         gchar buf[BUFFSIZE];
736         gchar *str;
737         gboolean scan_ret = FALSE;
738         int r;
739
740         cm_return_val_if_fail(mimeinfo != NULL, TRUE);
741         cm_return_val_if_fail(scan_callback != NULL, TRUE);
742
743         if (!procmime_decode_content(mimeinfo))
744                 return TRUE;
745
746         tmpfp = my_tmpfile();
747
748         if (tmpfp == NULL) {
749                 FILE_OP_ERROR("tmpfile", "open");
750                 return TRUE;
751         }
752
753         if ((r = procmime_get_part_to_stream(tmpfp, mimeinfo)) < 0) {
754                 g_warning("procmime_get_part_to_stream error %d\n", r);
755                 return TRUE;
756         }
757
758         src_codeset = forced_charset
759                       ? forced_charset : 
760                       procmime_mimeinfo_get_parameter(mimeinfo, "charset");
761
762         /* use supersets transparently when possible */
763         if (!forced_charset && src_codeset && !strcasecmp(src_codeset, CS_ISO_8859_1))
764                 src_codeset = CS_WINDOWS_1252;
765         else if (!forced_charset && src_codeset && !strcasecmp(src_codeset, CS_X_GBK))
766                 src_codeset = CS_GB18030;
767         else if (!forced_charset && src_codeset && !strcasecmp(src_codeset, CS_GBK))
768                 src_codeset = CS_GB18030;
769         else if (!forced_charset && src_codeset && !strcasecmp(src_codeset, CS_GB2312))
770                 src_codeset = CS_GB18030;
771         else if (!forced_charset && src_codeset && !strcasecmp(src_codeset, CS_X_VIET_VPS))
772                 src_codeset = CS_WINDOWS_874;
773
774         if (mimeinfo->type == MIMETYPE_TEXT && !g_ascii_strcasecmp(mimeinfo->subtype, "html")) {
775                 SC_HTMLParser *parser;
776                 CodeConverter *conv;
777
778                 conv = conv_code_converter_new(src_codeset);
779                 parser = sc_html_parser_new(tmpfp, conv);
780                 while ((str = sc_html_parse(parser)) != NULL) {
781                         if ((scan_ret = scan_callback(str, cb_data)) == TRUE)
782                                 break;
783                 }
784                 sc_html_parser_destroy(parser);
785                 conv_code_converter_destroy(conv);
786         } else if (mimeinfo->type == MIMETYPE_TEXT && !g_ascii_strcasecmp(mimeinfo->subtype, "enriched")) {
787                 ERTFParser *parser;
788                 CodeConverter *conv;
789
790                 conv = conv_code_converter_new(src_codeset);
791                 parser = ertf_parser_new(tmpfp, conv);
792                 while ((str = ertf_parse(parser)) != NULL) {
793                         if ((scan_ret = scan_callback(str, cb_data)) == TRUE)
794                                 break;
795                 }
796                 ertf_parser_destroy(parser);
797                 conv_code_converter_destroy(conv);
798         } else if (mimeinfo->type == MIMETYPE_TEXT && mimeinfo->disposition != DISPOSITIONTYPE_ATTACHMENT) {
799                 while (claws_fgets(buf, sizeof(buf), tmpfp) != NULL) {
800                         str = conv_codeset_strdup(buf, src_codeset, CS_UTF_8);
801                         if (str) {
802                                 if ((scan_ret = scan_callback(str, cb_data)) == TRUE) {
803                                         g_free(str);
804                                         break;
805                                 }
806                                 g_free(str);
807                         } else {
808                                 conv_fail = TRUE;
809                                 if ((scan_ret = scan_callback(buf, cb_data)) == TRUE)
810                                         break;
811                         }
812                 }
813         }
814
815         if (conv_fail)
816                 g_warning("procmime_get_text_content(): Code conversion failed.");
817
818         claws_fclose(tmpfp);
819
820         return scan_ret;
821 }
822
823 static gboolean scan_fputs_cb(const gchar *str, gpointer fp)
824 {
825         if (claws_fputs(str, (FILE *)fp) == EOF)
826                 return TRUE;
827         
828         return FALSE;
829 }
830
831 FILE *procmime_get_text_content(MimeInfo *mimeinfo)
832 {
833         FILE *outfp;
834         gboolean err;
835
836         if ((outfp = my_tmpfile()) == NULL) {
837                 perror("my_tmpfile");
838                 return NULL;
839         }
840
841         err = procmime_scan_text_content(mimeinfo, scan_fputs_cb, outfp);
842
843         rewind(outfp);
844         if (err == TRUE) {
845                 claws_fclose(outfp);
846                 return NULL;
847         }
848         return outfp;
849
850 }
851
852 FILE *procmime_get_binary_content(MimeInfo *mimeinfo)
853 {
854         FILE *outfp;
855
856         cm_return_val_if_fail(mimeinfo != NULL, NULL);
857
858         if (!procmime_decode_content(mimeinfo))
859                 return NULL;
860
861         outfp = my_tmpfile();
862
863         if (procmime_get_part_to_stream(outfp, mimeinfo) < 0) {
864                 return NULL;
865         }
866
867         return outfp;
868 }
869
870 /* search the first text part of (multipart) MIME message,
871    decode, convert it and output to outfp. */
872 FILE *procmime_get_first_text_content(MsgInfo *msginfo)
873 {
874         FILE *outfp = NULL;
875         MimeInfo *mimeinfo, *partinfo;
876         gboolean empty_ok = FALSE, short_scan = TRUE;
877
878         cm_return_val_if_fail(msginfo != NULL, NULL);
879
880         /* first we try to short-scan (for speed), refusing empty parts */
881 scan_again:
882         if (short_scan)
883                 mimeinfo = procmime_scan_message_short(msginfo);
884         else
885                 mimeinfo = procmime_scan_message(msginfo);
886         if (!mimeinfo) return NULL;
887
888         partinfo = mimeinfo;
889         while (partinfo && (partinfo->type != MIMETYPE_TEXT ||
890                (partinfo->length == 0 && !empty_ok))) {
891                 partinfo = procmime_mimeinfo_next(partinfo);
892         }
893         if (partinfo)
894                 outfp = procmime_get_text_content(partinfo);
895         else if (!empty_ok && short_scan) {
896                 /* if short scan didn't find a non-empty part, rescan
897                  * fully for non-empty parts
898                  */
899                 short_scan = FALSE;
900                 procmime_mimeinfo_free_all(&mimeinfo);
901                 goto scan_again;
902         } else if (!empty_ok && !short_scan) {
903                 /* if full scan didn't find a non-empty part, rescan
904                  * accepting empty parts 
905                  */
906                 empty_ok = TRUE;
907                 procmime_mimeinfo_free_all(&mimeinfo);
908                 goto scan_again;
909         }
910         procmime_mimeinfo_free_all(&mimeinfo);
911
912         return outfp;
913 }
914
915
916 static gboolean find_encrypted_func(GNode *node, gpointer data)
917 {
918         MimeInfo *mimeinfo = (MimeInfo *) node->data;
919         MimeInfo **encinfo = (MimeInfo **) data;
920         
921         if (privacy_mimeinfo_is_encrypted(mimeinfo)) {
922                 *encinfo = mimeinfo;
923                 return TRUE;
924         }
925         
926         return FALSE;
927 }
928
929 static MimeInfo *find_encrypted_part(MimeInfo *rootinfo)
930 {
931         MimeInfo *encinfo = NULL;
932
933         g_node_traverse(rootinfo->node, G_IN_ORDER, G_TRAVERSE_ALL, -1,
934                 find_encrypted_func, &encinfo);
935         
936         return encinfo;
937 }
938
939 /* search the first encrypted text part of (multipart) MIME message,
940    decode, convert it and output to outfp. */
941 FILE *procmime_get_first_encrypted_text_content(MsgInfo *msginfo)
942 {
943         FILE *outfp = NULL;
944         MimeInfo *mimeinfo, *partinfo, *encinfo;
945
946         cm_return_val_if_fail(msginfo != NULL, NULL);
947
948         mimeinfo = procmime_scan_message(msginfo);
949         if (!mimeinfo) {
950                 return NULL;
951         }
952
953         partinfo = mimeinfo;
954         if ((encinfo = find_encrypted_part(partinfo)) != NULL) {
955                 debug_print("decrypting message part\n");
956                 if (privacy_mimeinfo_decrypt(encinfo) < 0) {
957                         alertpanel_error(_("Couldn't decrypt: %s"),
958                                 privacy_get_error());
959                         return NULL;
960                 }
961         }
962         partinfo = mimeinfo;
963         while (partinfo && partinfo->type != MIMETYPE_TEXT) {
964                 partinfo = procmime_mimeinfo_next(partinfo);
965                 if (privacy_mimeinfo_is_signed(partinfo))
966                         procmsg_msginfo_set_flags(msginfo, 0, MSG_SIGNED);
967         }
968
969         if (partinfo)
970                 outfp = procmime_get_text_content(partinfo);
971
972         procmime_mimeinfo_free_all(&mimeinfo);
973
974         return outfp;
975 }
976
977 gboolean procmime_msginfo_is_encrypted(MsgInfo *msginfo)
978 {
979         MimeInfo *mimeinfo, *partinfo;
980         gboolean result = FALSE;
981
982         cm_return_val_if_fail(msginfo != NULL, FALSE);
983
984         mimeinfo = procmime_scan_message(msginfo);
985         if (!mimeinfo) {
986                 return FALSE;
987         }
988
989         partinfo = mimeinfo;
990         result = (find_encrypted_part(partinfo) != NULL);
991         procmime_mimeinfo_free_all(&mimeinfo);
992
993         return result;
994 }
995
996 gchar *procmime_get_tmp_file_name(MimeInfo *mimeinfo)
997 {
998         static guint32 id = 0;
999         gchar *base;
1000         gchar *filename;
1001         gchar f_prefix[10];
1002
1003         cm_return_val_if_fail(mimeinfo != NULL, NULL);
1004
1005         g_snprintf(f_prefix, sizeof(f_prefix), "%08x.", id++);
1006
1007         if ((mimeinfo->type == MIMETYPE_TEXT) && !g_ascii_strcasecmp(mimeinfo->subtype, "html"))
1008                 base = g_strdup("mimetmp.html");
1009         else {
1010                 const gchar *basetmp;
1011
1012                 basetmp = procmime_mimeinfo_get_parameter(mimeinfo, "filename");
1013                 if (basetmp == NULL)
1014                         basetmp = procmime_mimeinfo_get_parameter(mimeinfo, "name");
1015                 if (basetmp == NULL)
1016                         basetmp = "mimetmp";
1017                 basetmp = g_path_get_basename(basetmp);
1018                 if (*basetmp == '\0') 
1019                         basetmp = g_strdup("mimetmp");
1020                 base = conv_filename_from_utf8(basetmp);
1021                 g_free((gchar*)basetmp);
1022                 subst_for_shellsafe_filename(base);
1023         }
1024
1025         filename = g_strconcat(get_mime_tmp_dir(), G_DIR_SEPARATOR_S,
1026                                f_prefix, base, NULL);
1027
1028         g_free(base);
1029         
1030         return filename;
1031 }
1032
1033 static GList *mime_type_list = NULL;
1034
1035 gchar *procmime_get_mime_type(const gchar *filename)
1036 {
1037         const gchar *p;
1038         gchar *ext = NULL;
1039         gchar *base;
1040 #ifndef G_OS_WIN32
1041         static GHashTable *mime_type_table = NULL;
1042         MimeType *mime_type;
1043
1044         if (!mime_type_table) {
1045                 mime_type_table = procmime_get_mime_type_table();
1046                 if (!mime_type_table) return NULL;
1047         }
1048 #endif
1049
1050         if (filename == NULL)
1051                 return NULL;
1052
1053         base = g_path_get_basename(filename);
1054         if ((p = strrchr(base, '.')) != NULL)
1055                 ext = g_utf8_strdown(p + 1, -1);
1056         else
1057                 ext = g_utf8_strdown(base, -1);
1058         g_free(base);
1059
1060 #ifndef G_OS_WIN32
1061         mime_type = g_hash_table_lookup(mime_type_table, ext);
1062         
1063         if (mime_type) {
1064                 gchar *str;
1065                 str = g_strconcat(mime_type->type, "/", mime_type->sub_type,
1066                                   NULL);
1067                 debug_print("got type %s for %s\n", str, ext);
1068                 g_free(ext);
1069                 return str;
1070         }
1071         g_free(ext);
1072         return NULL;
1073 #else
1074         gchar *str = get_content_type_from_registry_with_ext(ext);
1075
1076         g_free(ext);
1077         return str;
1078 #endif
1079 }
1080
1081 static guint procmime_str_hash(gconstpointer gptr)
1082 {
1083         guint hash_result = 0;
1084         const char *str;
1085
1086         for (str = gptr; str && *str; str++) {
1087                 if (isupper(*str)) hash_result += (*str + ' ');
1088                 else hash_result += *str;
1089         }
1090
1091         return hash_result;
1092 }
1093
1094 static gint procmime_str_equal(gconstpointer gptr1, gconstpointer gptr2)
1095 {
1096         const char *str1 = gptr1;
1097         const char *str2 = gptr2;
1098
1099         return !g_utf8_collate(str1, str2);
1100 }
1101
1102 static GHashTable *procmime_get_mime_type_table(void)
1103 {
1104         GHashTable *table = NULL;
1105         GList *cur;
1106         MimeType *mime_type;
1107         gchar **exts;
1108
1109         if (!mime_type_list) {
1110                 mime_type_list = procmime_get_mime_type_list();
1111                 if (!mime_type_list) return NULL;
1112         }
1113
1114         table = g_hash_table_new(procmime_str_hash, procmime_str_equal);
1115
1116         for (cur = mime_type_list; cur != NULL; cur = cur->next) {
1117                 gint i;
1118                 gchar *key;
1119
1120                 mime_type = (MimeType *)cur->data;
1121
1122                 if (!mime_type->extension) continue;
1123
1124                 exts = g_strsplit(mime_type->extension, " ", 16);
1125                 for (i = 0; exts[i] != NULL; i++) {
1126                         /* Don't overwrite previously inserted extension */
1127                         if (!g_hash_table_lookup(table, exts[i])) {
1128                                 key = g_strdup(exts[i]);
1129                                 g_hash_table_insert(table, key, mime_type);
1130                         }
1131                 }
1132                 g_strfreev(exts);
1133         }
1134
1135         return table;
1136 }
1137
1138 GList *procmime_get_mime_type_list(void)
1139 {
1140         GList *list = NULL;
1141         FILE *fp;
1142         gchar buf[BUFFSIZE];
1143         gchar *p;
1144         gchar *delim;
1145         MimeType *mime_type;
1146         gboolean fp_is_glob_file = TRUE;
1147
1148         if (mime_type_list) 
1149                 return mime_type_list;
1150         
1151 #if defined(__NetBSD__) || defined(__OpenBSD__) || defined(__FreeBSD__)
1152         if ((fp = claws_fopen(DATAROOTDIR "/mime/globs", "rb")) == NULL) 
1153 #else
1154         if ((fp = claws_fopen("/usr/share/mime/globs", "rb")) == NULL) 
1155 #endif
1156         {
1157                 fp_is_glob_file = FALSE;
1158                 if ((fp = claws_fopen("/etc/mime.types", "rb")) == NULL) {
1159                         if ((fp = claws_fopen(SYSCONFDIR "/mime.types", "rb")) 
1160                                 == NULL) {
1161                                 FILE_OP_ERROR(SYSCONFDIR "/mime.types", 
1162                                         "claws_fopen");
1163                                 return NULL;
1164                         }
1165                 }
1166         }
1167
1168         while (claws_fgets(buf, sizeof(buf), fp) != NULL) {
1169                 p = strchr(buf, '#');
1170                 if (p) *p = '\0';
1171                 g_strstrip(buf);
1172
1173                 p = buf;
1174                 
1175                 if (fp_is_glob_file) {
1176                         while (*p && !g_ascii_isspace(*p) && (*p!=':')) p++;
1177                 } else {
1178                         while (*p && !g_ascii_isspace(*p)) p++;
1179                 }
1180
1181                 if (*p) {
1182                         *p = '\0';
1183                         p++;
1184                 }
1185                 delim = strchr(buf, '/');
1186                 if (delim == NULL) continue;
1187                 *delim = '\0';
1188
1189                 mime_type = g_new(MimeType, 1);
1190                 mime_type->type = g_strdup(buf);
1191                 mime_type->sub_type = g_strdup(delim + 1);
1192
1193                 if (fp_is_glob_file) {
1194                         while (*p && (g_ascii_isspace(*p)||(*p=='*')||(*p=='.'))) p++;
1195                 } else {
1196                         while (*p && g_ascii_isspace(*p)) p++;
1197                 }
1198
1199                 if (*p)
1200                         mime_type->extension = g_utf8_strdown(p, -1);
1201                 else
1202                         mime_type->extension = NULL;
1203
1204                 list = g_list_append(list, mime_type);
1205         }
1206
1207         claws_fclose(fp);
1208
1209         if (!list)
1210                 g_warning("Can't read mime.types");
1211
1212         return list;
1213 }
1214
1215 EncodingType procmime_get_encoding_for_charset(const gchar *charset)
1216 {
1217         if (!charset)
1218                 return ENC_8BIT;
1219         else if (!g_ascii_strncasecmp(charset, "ISO-2022-", 9) ||
1220                  !g_ascii_strcasecmp(charset, "US-ASCII"))
1221                 return ENC_7BIT;
1222         else if (!g_ascii_strcasecmp(charset, "ISO-8859-5") ||
1223                  !g_ascii_strncasecmp(charset, "KOI8-", 5) ||
1224                  !g_ascii_strcasecmp(charset, "X-MAC-CYRILLIC") ||
1225                  !g_ascii_strcasecmp(charset, "MAC-CYRILLIC") ||
1226                  !g_ascii_strcasecmp(charset, "Windows-1251"))
1227                 return ENC_8BIT;
1228         else if (!g_ascii_strncasecmp(charset, "ISO-8859-", 9))
1229                 return ENC_QUOTED_PRINTABLE;
1230         else if (!g_ascii_strncasecmp(charset, "UTF-8", 5))
1231                 return ENC_QUOTED_PRINTABLE;
1232         else 
1233                 return ENC_8BIT;
1234 }
1235
1236 EncodingType procmime_get_encoding_for_text_file(const gchar *file, gboolean *has_binary)
1237 {
1238         FILE *fp;
1239         guchar buf[BUFFSIZE];
1240         size_t len;
1241         size_t octet_chars = 0;
1242         size_t total_len = 0;
1243         gfloat octet_percentage;
1244         gboolean force_b64 = FALSE;
1245
1246         if ((fp = claws_fopen(file, "rb")) == NULL) {
1247                 FILE_OP_ERROR(file, "claws_fopen");
1248                 return ENC_UNKNOWN;
1249         }
1250
1251         while ((len = claws_fread(buf, sizeof(guchar), sizeof(buf), fp)) > 0) {
1252                 guchar *p;
1253                 gint i;
1254
1255                 for (p = buf, i = 0; i < len; ++p, ++i) {
1256                         if (*p & 0x80)
1257                                 ++octet_chars;
1258                         if (*p == '\0') {
1259                                 force_b64 = TRUE;
1260                                 *has_binary = TRUE;
1261                         }
1262                 }
1263                 total_len += len;
1264         }
1265
1266         claws_fclose(fp);
1267         
1268         if (total_len > 0)
1269                 octet_percentage = (gfloat)octet_chars / (gfloat)total_len;
1270         else
1271                 octet_percentage = 0.0;
1272
1273         debug_print("procmime_get_encoding_for_text_file(): "
1274                     "8bit chars: %"G_GSIZE_FORMAT" / %"G_GSIZE_FORMAT" (%f%%)\n", octet_chars, total_len,
1275                     100.0 * octet_percentage);
1276
1277         if (octet_percentage > 0.20 || force_b64) {
1278                 debug_print("using BASE64\n");
1279                 return ENC_BASE64;
1280         } else if (octet_chars > 0) {
1281                 debug_print("using quoted-printable\n");
1282                 return ENC_QUOTED_PRINTABLE;
1283         } else {
1284                 debug_print("using 7bit\n");
1285                 return ENC_7BIT;
1286         }
1287 }
1288
1289 struct EncodingTable 
1290 {
1291         gchar *str;
1292         EncodingType enc_type;
1293 };
1294
1295 struct EncodingTable encoding_table[] = {
1296         {"7bit", ENC_7BIT},
1297         {"8bit", ENC_8BIT},
1298         {"binary", ENC_BINARY},
1299         {"quoted-printable", ENC_QUOTED_PRINTABLE},
1300         {"base64", ENC_BASE64},
1301         {"x-uuencode", ENC_UNKNOWN},
1302         {NULL, ENC_UNKNOWN},
1303 };
1304
1305 const gchar *procmime_get_encoding_str(EncodingType encoding)
1306 {
1307         struct EncodingTable *enc_table;
1308         
1309         for (enc_table = encoding_table; enc_table->str != NULL; enc_table++) {
1310                 if (enc_table->enc_type == encoding)
1311                         return enc_table->str;
1312         }
1313         return NULL;
1314 }
1315
1316 /* --- NEW MIME STUFF --- */
1317 struct TypeTable
1318 {
1319         gchar *str;
1320         MimeMediaType type;
1321 };
1322
1323 static struct TypeTable mime_type_table[] = {
1324         {"text", MIMETYPE_TEXT},
1325         {"image", MIMETYPE_IMAGE},
1326         {"audio", MIMETYPE_AUDIO},
1327         {"video", MIMETYPE_VIDEO},
1328         {"model", MIMETYPE_MODEL},
1329         {"application", MIMETYPE_APPLICATION},
1330         {"message", MIMETYPE_MESSAGE},
1331         {"multipart", MIMETYPE_MULTIPART},
1332         {NULL, 0},
1333 };
1334
1335 const gchar *procmime_get_media_type_str(MimeMediaType type)
1336 {
1337         struct TypeTable *type_table;
1338         
1339         for (type_table = mime_type_table; type_table->str != NULL; type_table++) {
1340                 if (type_table->type == type)
1341                         return type_table->str;
1342         }
1343         return NULL;
1344 }
1345
1346 MimeMediaType procmime_get_media_type(const gchar *str)
1347 {
1348         struct TypeTable *typetablearray;
1349
1350         for (typetablearray = mime_type_table; typetablearray->str != NULL; typetablearray++)
1351                 if (g_ascii_strncasecmp(str, typetablearray->str, strlen(typetablearray->str)) == 0)
1352                         return typetablearray->type;
1353
1354         return MIMETYPE_UNKNOWN;
1355 }
1356
1357 /*!
1358  *\brief        Safe wrapper for content type string.
1359  *
1360  *\return       const gchar * Pointer to content type string. 
1361  */
1362 gchar *procmime_get_content_type_str(MimeMediaType type,
1363                                            const char *subtype)
1364 {
1365         const gchar *type_str = NULL;
1366
1367         if (subtype == NULL || !(type_str = procmime_get_media_type_str(type)))
1368                 return g_strdup("unknown");
1369         return g_strdup_printf("%s/%s", type_str, subtype);
1370 }
1371
1372 static int procmime_parse_mimepart(MimeInfo *parent,
1373                              gchar *content_type,
1374                              gchar *content_encoding,
1375                              gchar *content_description,
1376                              gchar *content_id,
1377                              gchar *content_disposition,
1378                              gchar *content_location,
1379                              const gchar *original_msgid,
1380                              const gchar *disposition_notification_hdr,
1381                              const gchar *filename,
1382                              guint offset,
1383                              guint length,
1384                              gboolean short_scan);
1385
1386 static void procmime_parse_message_rfc822(MimeInfo *mimeinfo, gboolean short_scan)
1387 {
1388         HeaderEntry hentry[] = {{"Content-Type:",  NULL, TRUE},
1389                                 {"Content-Transfer-Encoding:",
1390                                                    NULL, FALSE},
1391                                 {"Content-Description:",
1392                                                    NULL, TRUE},
1393                                 {"Content-ID:",
1394                                                    NULL, TRUE},
1395                                 {"Content-Disposition:",
1396                                                    NULL, TRUE},
1397                                 {"Content-Location:",
1398                                                    NULL, TRUE},
1399                                 {"MIME-Version:",
1400                                                    NULL, TRUE},
1401                                 {"Original-Message-ID:",
1402                                                    NULL, TRUE},
1403                                 {"Disposition:",
1404                                                    NULL, TRUE},
1405                                 {NULL,             NULL, FALSE}};
1406         guint content_start, i;
1407         FILE *fp;
1408         gchar *tmp;
1409         gint len = 0;
1410
1411         procmime_decode_content(mimeinfo);
1412
1413         fp = claws_fopen(mimeinfo->data.filename, "rb");
1414         if (fp == NULL) {
1415                 FILE_OP_ERROR(mimeinfo->data.filename, "claws_fopen");
1416                 return;
1417         }
1418         if (fseek(fp, mimeinfo->offset, SEEK_SET) < 0) {
1419                 FILE_OP_ERROR(mimeinfo->data.filename, "fseek");
1420                 claws_fclose(fp);
1421                 return;
1422         }
1423         procheader_get_header_fields(fp, hentry);
1424         if (hentry[0].body != NULL) {
1425                 tmp = conv_unmime_header(hentry[0].body, NULL, FALSE);
1426                 g_free(hentry[0].body);
1427                 hentry[0].body = tmp;
1428         }                
1429         if (hentry[2].body != NULL) {
1430                 tmp = conv_unmime_header(hentry[2].body, NULL, FALSE);
1431                 g_free(hentry[2].body);
1432                 hentry[2].body = tmp;
1433         }                
1434         if (hentry[4].body != NULL) {
1435                 tmp = conv_unmime_header(hentry[4].body, NULL, FALSE);
1436                 g_free(hentry[4].body);
1437                 hentry[4].body = tmp;
1438         }                
1439         if (hentry[5].body != NULL) {
1440                 tmp = conv_unmime_header(hentry[5].body, NULL, FALSE);
1441                 g_free(hentry[5].body);
1442                 hentry[5].body = tmp;
1443         }                
1444         if (hentry[7].body != NULL) {
1445                 tmp = conv_unmime_header(hentry[7].body, NULL, FALSE);
1446                 g_free(hentry[7].body);
1447                 hentry[7].body = tmp;
1448         }
1449         if (hentry[8].body != NULL) {
1450                 tmp = conv_unmime_header(hentry[8].body, NULL, FALSE);
1451                 g_free(hentry[8].body);
1452                 hentry[8].body = tmp;
1453         }
1454   
1455         content_start = ftell(fp);
1456         claws_fclose(fp);
1457         
1458         len = mimeinfo->length - (content_start - mimeinfo->offset);
1459         if (len < 0)
1460                 len = 0;
1461         procmime_parse_mimepart(mimeinfo,
1462                                 hentry[0].body, hentry[1].body,
1463                                 hentry[2].body, hentry[3].body,
1464                                 hentry[4].body, hentry[5].body,
1465                                 hentry[7].body, hentry[8].body, 
1466                                 mimeinfo->data.filename, content_start,
1467                                 len, short_scan);
1468         
1469         for (i = 0; i < (sizeof hentry / sizeof hentry[0]); i++) {
1470                 g_free(hentry[i].body);
1471                 hentry[i].body = NULL;
1472         }
1473 }
1474
1475 static void procmime_parse_disposition_notification(MimeInfo *mimeinfo, 
1476                 const gchar *original_msgid, const gchar *disposition_notification_hdr,
1477                 gboolean short_scan)
1478 {
1479         HeaderEntry hentry[] = {{"Original-Message-ID:",  NULL, TRUE},
1480                                 {"Disposition:",          NULL, TRUE},
1481                                 {NULL,                    NULL, FALSE}};
1482         guint i;
1483         FILE *fp;
1484         gchar *orig_msg_id = NULL;
1485         gchar *disp = NULL;
1486
1487         procmime_decode_content(mimeinfo);
1488
1489         debug_print("parse disposition notification\n");
1490         fp = claws_fopen(mimeinfo->data.filename, "rb");
1491         if (fp == NULL) {
1492                 FILE_OP_ERROR(mimeinfo->data.filename, "claws_fopen");
1493                 return;
1494         }
1495         if (fseek(fp, mimeinfo->offset, SEEK_SET) < 0) {
1496                 FILE_OP_ERROR(mimeinfo->data.filename, "fseek");
1497                 claws_fclose(fp);
1498                 return;
1499         }
1500
1501         if (original_msgid && disposition_notification_hdr) {
1502                 hentry[0].body = g_strdup(original_msgid);
1503                 hentry[1].body = g_strdup(disposition_notification_hdr);
1504         } else {
1505                 procheader_get_header_fields(fp, hentry);
1506         }
1507     
1508         claws_fclose(fp);
1509
1510         if (!hentry[0].body || !hentry[1].body) {
1511                 debug_print("MsgId %s, Disp %s\n",
1512                         hentry[0].body ? hentry[0].body:"(nil)",
1513                         hentry[1].body ? hentry[1].body:"(nil)");
1514                 goto bail;
1515         }
1516
1517         orig_msg_id = g_strdup(hentry[0].body);
1518         disp = g_strdup(hentry[1].body);
1519
1520         extract_parenthesis(orig_msg_id, '<', '>');
1521         remove_space(orig_msg_id);
1522         
1523         if (strstr(disp, "displayed")) {
1524                 /* find sent message, if possible */
1525                 MsgInfo *info = NULL;
1526                 GList *flist;
1527                 debug_print("%s has been displayed.\n", orig_msg_id);
1528                 for (flist = folder_get_list(); flist != NULL; flist = g_list_next(flist)) {
1529                         FolderItem *outbox = ((Folder *)(flist->data))->outbox;
1530                         if (!outbox) {
1531                                 debug_print("skipping folder with no outbox...\n");
1532                                 continue;
1533                         }
1534                         info = folder_item_get_msginfo_by_msgid(outbox, orig_msg_id);
1535                         debug_print("%s %s in %s\n", info?"found":"didn't find", orig_msg_id, outbox->path);
1536                         if (info) {
1537                                 procmsg_msginfo_set_flags(info, MSG_RETRCPT_GOT, 0);
1538                                 procmsg_msginfo_free(&info);
1539                         }
1540                 }
1541         }
1542         g_free(orig_msg_id);
1543         g_free(disp);
1544 bail:
1545         for (i = 0; i < (sizeof hentry / sizeof hentry[0]); i++) {
1546                 g_free(hentry[i].body);
1547                 hentry[i].body = NULL;
1548         }
1549 }
1550
1551 #define GET_HEADERS() {                                         \
1552         procheader_get_header_fields(fp, hentry);               \
1553         if (hentry[0].body != NULL) {                           \
1554                 tmp = conv_unmime_header(hentry[0].body, NULL, FALSE);  \
1555                 g_free(hentry[0].body);                         \
1556                 hentry[0].body = tmp;                           \
1557         }                                                       \
1558         if (hentry[2].body != NULL) {                           \
1559                 tmp = conv_unmime_header(hentry[2].body, NULL, FALSE);  \
1560                 g_free(hentry[2].body);                         \
1561                 hentry[2].body = tmp;                           \
1562         }                                                       \
1563         if (hentry[4].body != NULL) {                           \
1564                 tmp = conv_unmime_header(hentry[4].body, NULL, FALSE);  \
1565                 g_free(hentry[4].body);                         \
1566                 hentry[4].body = tmp;                           \
1567         }                                                       \
1568         if (hentry[5].body != NULL) {                           \
1569                 tmp = conv_unmime_header(hentry[5].body, NULL, FALSE);  \
1570                 g_free(hentry[5].body);                         \
1571                 hentry[5].body = tmp;                           \
1572         }                                                       \
1573         if (hentry[6].body != NULL) {                           \
1574                 tmp = conv_unmime_header(hentry[6].body, NULL, FALSE);  \
1575                 g_free(hentry[6].body);                         \
1576                 hentry[6].body = tmp;                           \
1577         }                                                       \
1578         if (hentry[7].body != NULL) {                           \
1579                 tmp = conv_unmime_header(hentry[7].body, NULL, FALSE);  \
1580                 g_free(hentry[7].body);                         \
1581                 hentry[7].body = tmp;                           \
1582         }                                                       \
1583 }
1584
1585 static void procmime_parse_multipart(MimeInfo *mimeinfo, gboolean short_scan)
1586 {
1587         HeaderEntry hentry[] = {{"Content-Type:",  NULL, TRUE},
1588                                 {"Content-Transfer-Encoding:",
1589                                                    NULL, FALSE},
1590                                 {"Content-Description:",
1591                                                    NULL, TRUE},
1592                                 {"Content-ID:",
1593                                                    NULL, TRUE},
1594                                 {"Content-Disposition:",
1595                                                    NULL, TRUE},
1596                                 {"Content-Location:",
1597                                                    NULL, TRUE},
1598                                 {"Original-Message-ID:",
1599                                                    NULL, TRUE},
1600                                 {"Disposition:",
1601                                                    NULL, TRUE},
1602                                 {NULL,             NULL, FALSE}};
1603         gchar *tmp;
1604         gchar *boundary;
1605         gint boundary_len = 0, lastoffset = -1, i;
1606         gchar buf[BUFFSIZE];
1607         FILE *fp;
1608         int result = 0;
1609         gboolean start_found = FALSE;
1610         gboolean end_found = FALSE;
1611
1612         boundary = g_hash_table_lookup(mimeinfo->typeparameters, "boundary");
1613         if (!boundary)
1614                 return;
1615         boundary_len = strlen(boundary);
1616
1617         procmime_decode_content(mimeinfo);
1618
1619         fp = claws_fopen(mimeinfo->data.filename, "rb");
1620         if (fp == NULL) {
1621                 FILE_OP_ERROR(mimeinfo->data.filename, "claws_fopen");
1622                 return;
1623         }
1624
1625         if (fseek(fp, mimeinfo->offset, SEEK_SET) < 0) {
1626                 FILE_OP_ERROR(mimeinfo->data.filename, "fseek");
1627                 claws_fclose(fp);
1628                 return;
1629         }
1630
1631         while (claws_fgets(buf, sizeof(buf), fp) != NULL && result == 0) {
1632                 if (ftell(fp) - 1 > (mimeinfo->offset + mimeinfo->length))
1633                         break;
1634
1635                 if (IS_BOUNDARY(buf, boundary, boundary_len)) {
1636                         start_found = TRUE;
1637
1638                         if (lastoffset != -1) {
1639                                 gint len = (ftell(fp) - strlen(buf)) - lastoffset - 1;
1640                                 if (len < 0)
1641                                         len = 0;
1642                                 result = procmime_parse_mimepart(mimeinfo,
1643                                                         hentry[0].body, hentry[1].body,
1644                                                         hentry[2].body, hentry[3].body, 
1645                                                         hentry[4].body, hentry[5].body,
1646                                                         hentry[6].body, hentry[7].body,
1647                                                         mimeinfo->data.filename, lastoffset,
1648                                                         len, short_scan);
1649                                 if (result == 1 && short_scan)
1650                                         break;
1651                                 
1652                         } 
1653                         
1654                         if (buf[2 + boundary_len]     == '-' &&
1655                             buf[2 + boundary_len + 1] == '-') {
1656                                 end_found = TRUE;
1657                                 break;
1658                         }
1659                         for (i = 0; i < (sizeof hentry / sizeof hentry[0]) ; i++) {
1660                                 g_free(hentry[i].body);
1661                                 hentry[i].body = NULL;
1662                         }
1663                         GET_HEADERS();
1664                         lastoffset = ftell(fp);
1665                 }
1666         }
1667         
1668         if (start_found && !end_found && lastoffset != -1) {
1669                 gint len = (ftell(fp) - strlen(buf)) - lastoffset - 1;
1670
1671                 if (len >= 0) {
1672                         result = procmime_parse_mimepart(mimeinfo,
1673                                         hentry[0].body, hentry[1].body,
1674                                         hentry[2].body, hentry[3].body, 
1675                                         hentry[4].body, hentry[5].body,
1676                                         hentry[6].body, hentry[7].body,
1677                                         mimeinfo->data.filename, lastoffset,
1678                                         len, short_scan);
1679                 }
1680                 mimeinfo->broken = TRUE;
1681         }
1682         
1683         for (i = 0; i < (sizeof hentry / sizeof hentry[0]); i++) {
1684                 g_free(hentry[i].body);
1685                 hentry[i].body = NULL;
1686         }
1687         claws_fclose(fp);
1688 }
1689
1690 static void parse_parameters(const gchar *parameters, GHashTable *table)
1691 {
1692         gchar *params, *param, *next;
1693         GSList *convlist = NULL, *concatlist = NULL, *cur;
1694
1695         params = g_strdup(parameters);
1696         param = params;
1697         next = params;
1698         for (; next != NULL; param = next) {
1699                 gchar *attribute, *value, *tmp, *down_attr, *orig_down_attr;
1700                 gint len;
1701                 gboolean convert = FALSE;
1702
1703                 next = strchr_with_skip_quote(param, '"', ';');
1704                 if (next != NULL) {
1705                         next[0] = '\0';
1706                         next++;
1707                 }
1708
1709                 g_strstrip(param);
1710
1711                 attribute = param;
1712                 value = strchr(attribute, '=');
1713                 if (value == NULL)
1714                         continue;
1715
1716                 value[0] = '\0';
1717                 value++;
1718                 while (value[0] != '\0' && value[0] == ' ')
1719                         value++;
1720
1721                 down_attr = g_utf8_strdown(attribute, -1);
1722                 orig_down_attr = down_attr;
1723         
1724                 len = down_attr ? strlen(down_attr):0;
1725                 if (len > 0 && down_attr[len - 1] == '*') {
1726                         gchar *srcpos, *dstpos, *endpos;
1727
1728                         convert = TRUE;
1729                         down_attr[len - 1] = '\0';
1730
1731                         srcpos = value;
1732                         dstpos = value;
1733                         endpos = value + strlen(value);
1734                         while (srcpos < endpos) {
1735                                 if (*srcpos != '%')
1736                                         *dstpos = *srcpos;
1737                                 else {
1738                                         guchar dstvalue;
1739
1740                                         if (!get_hex_value(&dstvalue, srcpos[1], srcpos[2]))
1741                                                 *dstpos = '?';
1742                                         else
1743                                                 *dstpos = dstvalue;
1744                                         srcpos += 2;
1745                                 }
1746                                 srcpos++;
1747                                 dstpos++;
1748                         }
1749                         *dstpos = '\0';
1750                         if (value[0] == '"')
1751                                 extract_quote(value, '"');
1752                 } else {
1753                         if (value[0] == '"')
1754                                 extract_quote(value, '"');
1755                         else if ((tmp = strchr(value, ' ')) != NULL)
1756                                 *tmp = '\0';
1757                 }
1758
1759                 if (down_attr) {
1760                         while (down_attr[0] == ' ')
1761                                 down_attr++;
1762                         while (down_attr[strlen(down_attr)-1] == ' ') 
1763                                 down_attr[strlen(down_attr)-1] = '\0';
1764                 } 
1765
1766                 while (value[0] != '\0' && value[0] == ' ')
1767                         value++;
1768                 while (value[strlen(value)-1] == ' ') 
1769                         value[strlen(value)-1] = '\0';
1770
1771                 if (down_attr && strrchr(down_attr, '*') != NULL) {
1772                         gchar *tmpattr;
1773
1774                         tmpattr = g_strdup(down_attr);
1775                         tmp = strrchr(tmpattr, '*');
1776                         tmp[0] = '\0';
1777
1778                         if ((tmp[1] == '0') && (tmp[2] == '\0') && 
1779                             (g_slist_find_custom(concatlist, down_attr, (GCompareFunc)g_strcmp0) == NULL))
1780                                 concatlist = g_slist_prepend(concatlist, g_strdup(tmpattr));
1781
1782                         if (convert && (g_slist_find_custom(convlist, tmpattr, (GCompareFunc)g_strcmp0) == NULL))
1783                                 convlist = g_slist_prepend(convlist, g_strdup(tmpattr));
1784
1785                         g_free(tmpattr);
1786                 } else if (convert) {
1787                         if (g_slist_find_custom(convlist, down_attr, (GCompareFunc)g_strcmp0) == NULL)
1788                                 convlist = g_slist_prepend(convlist, g_strdup(down_attr));
1789                 }
1790
1791                 if (g_hash_table_lookup(table, down_attr) == NULL)
1792                         g_hash_table_insert(table, g_strdup(down_attr), g_strdup(value));
1793                 g_free(orig_down_attr);
1794         }
1795
1796         for (cur = concatlist; cur != NULL; cur = g_slist_next(cur)) {
1797                 gchar *attribute, *attrwnum, *partvalue;
1798                 gint n = 0;
1799                 GString *value;
1800
1801                 attribute = (gchar *) cur->data;
1802                 value = g_string_sized_new(64);
1803
1804                 attrwnum = g_strdup_printf("%s*%d", attribute, n);
1805                 while ((partvalue = g_hash_table_lookup(table, attrwnum)) != NULL) {
1806                         g_string_append(value, partvalue);
1807
1808                         g_hash_table_remove(table, attrwnum);
1809                         g_free(attrwnum);
1810                         n++;
1811                         attrwnum = g_strdup_printf("%s*%d", attribute, n);
1812                 }
1813                 g_free(attrwnum);
1814
1815                 g_hash_table_insert(table, g_strdup(attribute), g_strdup(value->str));
1816                 g_string_free(value, TRUE);
1817         }
1818         slist_free_strings_full(concatlist);
1819
1820         for (cur = convlist; cur != NULL; cur = g_slist_next(cur)) {
1821                 gchar *attribute, *key, *value;
1822                 gchar *charset, *lang, *oldvalue, *newvalue;
1823
1824                 attribute = (gchar *) cur->data;
1825                 if (!g_hash_table_lookup_extended(
1826                         table, attribute, (gpointer *)(gchar *) &key, (gpointer *)(gchar *) &value))
1827                         continue;
1828
1829                 charset = value;
1830                 if (charset == NULL)
1831                         continue;
1832                 lang = strchr(charset, '\'');
1833                 if (lang == NULL)
1834                         continue;
1835                 lang[0] = '\0';
1836                 lang++;
1837                 oldvalue = strchr(lang, '\'');
1838                 if (oldvalue == NULL)
1839                         continue;
1840                 oldvalue[0] = '\0';
1841                 oldvalue++;
1842
1843                 newvalue = conv_codeset_strdup(oldvalue, charset, CS_UTF_8);
1844
1845                 g_hash_table_remove(table, attribute);
1846                 g_free(key);
1847                 g_free(value);
1848
1849                 g_hash_table_insert(table, g_strdup(attribute), newvalue);
1850         }
1851         slist_free_strings_full(convlist);
1852
1853         g_free(params);
1854 }       
1855
1856 static void procmime_parse_content_type(const gchar *content_type, MimeInfo *mimeinfo)
1857 {
1858         cm_return_if_fail(content_type != NULL);
1859         cm_return_if_fail(mimeinfo != NULL);
1860
1861         /* RFC 2045, page 13 says that the mime subtype is MANDATORY;
1862          * if it's not available we use the default Content-Type */
1863         if ((content_type[0] == '\0') || (strchr(content_type, '/') == NULL)) {
1864                 mimeinfo->type = MIMETYPE_TEXT;
1865                 mimeinfo->subtype = g_strdup("plain");
1866                 if (g_hash_table_lookup(mimeinfo->typeparameters,
1867                                        "charset") == NULL) {
1868                         g_hash_table_insert(mimeinfo->typeparameters,
1869                                     g_strdup("charset"),
1870                                     g_strdup(
1871                                         conv_get_locale_charset_str_no_utf8()));
1872                 }
1873         } else {
1874                 gchar *type, *subtype, *params;
1875
1876                 type = g_strdup(content_type);
1877                 subtype = strchr(type, '/') + 1;
1878                 *(subtype - 1) = '\0';
1879                 if ((params = strchr(subtype, ';')) != NULL) {
1880                         params[0] = '\0';
1881                         params++;
1882                 }
1883
1884                 mimeinfo->type = procmime_get_media_type(type);
1885                 mimeinfo->subtype = g_strstrip(g_strdup(subtype));
1886
1887                 /* Get mimeinfo->typeparameters */
1888                 if (params != NULL)
1889                         parse_parameters(params, mimeinfo->typeparameters);
1890
1891                 g_free(type);
1892         }
1893 }
1894
1895 static void procmime_parse_content_disposition(const gchar *content_disposition, MimeInfo *mimeinfo)
1896 {
1897         gchar *tmp, *params;
1898
1899         cm_return_if_fail(content_disposition != NULL);
1900         cm_return_if_fail(mimeinfo != NULL);
1901
1902         tmp = g_strdup(content_disposition);
1903         if ((params = strchr(tmp, ';')) != NULL) {
1904                 params[0] = '\0';
1905                 params++;
1906         }       
1907         g_strstrip(tmp);
1908
1909         if (!g_ascii_strcasecmp(tmp, "inline")) 
1910                 mimeinfo->disposition = DISPOSITIONTYPE_INLINE;
1911         else if (!g_ascii_strcasecmp(tmp, "attachment"))
1912                 mimeinfo->disposition = DISPOSITIONTYPE_ATTACHMENT;
1913         else
1914                 mimeinfo->disposition = DISPOSITIONTYPE_ATTACHMENT;
1915         
1916         if (params != NULL)
1917                 parse_parameters(params, mimeinfo->dispositionparameters);
1918
1919         g_free(tmp);
1920 }
1921
1922
1923 static void procmime_parse_content_encoding(const gchar *content_encoding, MimeInfo *mimeinfo)
1924 {
1925         struct EncodingTable *enc_table;
1926         
1927         for (enc_table = encoding_table; enc_table->str != NULL; enc_table++) {
1928                 if (g_ascii_strcasecmp(enc_table->str, content_encoding) == 0) {
1929                         mimeinfo->encoding_type = enc_table->enc_type;
1930                         return;
1931                 }
1932         }
1933         mimeinfo->encoding_type = ENC_UNKNOWN;
1934         return;
1935 }
1936
1937 static GSList *registered_parsers = NULL;
1938
1939 static MimeParser *procmime_get_mimeparser_for_type(MimeMediaType type, const gchar *sub_type)
1940 {
1941         GSList *cur;
1942         for (cur = registered_parsers; cur; cur = cur->next) {
1943                 MimeParser *parser = (MimeParser *)cur->data;
1944                 if (parser->type == type && !g_strcmp0(parser->sub_type, sub_type))
1945                         return parser;
1946         }
1947         return NULL;
1948 }
1949
1950 void procmime_mimeparser_register(MimeParser *parser)
1951 {
1952         if (!procmime_get_mimeparser_for_type(parser->type, parser->sub_type))
1953                 registered_parsers = g_slist_append(registered_parsers, parser);
1954 }
1955
1956
1957 void procmime_mimeparser_unregister(MimeParser *parser) 
1958 {
1959         registered_parsers = g_slist_remove(registered_parsers, parser);
1960 }
1961
1962 static gboolean procmime_mimeparser_parse(MimeParser *parser, MimeInfo *mimeinfo)
1963 {
1964         cm_return_val_if_fail(parser->parse != NULL, FALSE);
1965         return parser->parse(parser, mimeinfo); 
1966 }
1967
1968 static int procmime_parse_mimepart(MimeInfo *parent,
1969                              gchar *content_type,
1970                              gchar *content_encoding,
1971                              gchar *content_description,
1972                              gchar *content_id,
1973                              gchar *content_disposition,
1974                              gchar *content_location,
1975                              const gchar *original_msgid,
1976                              const gchar *disposition_notification_hdr,
1977                              const gchar *filename,
1978                              guint offset,
1979                              guint length,
1980                              gboolean short_scan)
1981 {
1982         MimeInfo *mimeinfo;
1983         MimeParser *parser = NULL;
1984         gboolean parsed = FALSE;
1985         int result = 0;
1986
1987         /* Create MimeInfo */
1988         mimeinfo = procmime_mimeinfo_new();
1989         mimeinfo->content = MIMECONTENT_FILE;
1990
1991         if (parent != NULL) {
1992                 if (g_node_depth(parent->node) > 32) {
1993                         /* 32 is an arbitrary value
1994                          * this avoids DOSsing ourselves 
1995                          * with enormous messages
1996                          */
1997                         procmime_mimeinfo_free_all(&mimeinfo);
1998                         return -1;                      
1999                 }
2000                 g_node_append(parent->node, mimeinfo->node);
2001         }
2002         mimeinfo->data.filename = g_strdup(filename);
2003         mimeinfo->offset = offset;
2004         mimeinfo->length = length;
2005
2006         if (content_type != NULL) {
2007                 g_strchomp(content_type);
2008                 procmime_parse_content_type(content_type, mimeinfo);
2009         } else {
2010                 mimeinfo->type = MIMETYPE_TEXT;
2011                 mimeinfo->subtype = g_strdup("plain");
2012                 if (g_hash_table_lookup(mimeinfo->typeparameters,
2013                                        "charset") == NULL) {
2014                         g_hash_table_insert(mimeinfo->typeparameters,
2015                                     g_strdup("charset"),
2016                                     g_strdup(
2017                                         conv_get_locale_charset_str_no_utf8()));
2018                 }
2019         }
2020
2021         if (content_encoding != NULL) {
2022                 g_strchomp(content_encoding);
2023                 procmime_parse_content_encoding(content_encoding, mimeinfo);
2024         } else {
2025                 mimeinfo->encoding_type = ENC_UNKNOWN;
2026         }
2027
2028         if (content_description != NULL)
2029                 mimeinfo->description = g_strdup(content_description);
2030         else
2031                 mimeinfo->description = NULL;
2032
2033         if (content_id != NULL)
2034                 mimeinfo->id = g_strdup(content_id);
2035         else
2036                 mimeinfo->id = NULL;
2037
2038         if (content_location != NULL)
2039                 mimeinfo->location = g_strdup(content_location);
2040         else
2041                 mimeinfo->location = NULL;
2042
2043         if (content_disposition != NULL) {
2044                 g_strchomp(content_disposition);
2045                 procmime_parse_content_disposition(content_disposition, mimeinfo);
2046         } else
2047                 mimeinfo->disposition = DISPOSITIONTYPE_UNKNOWN;
2048
2049         /* Call parser for mime type */
2050         if ((parser = procmime_get_mimeparser_for_type(mimeinfo->type, mimeinfo->subtype)) != NULL) {
2051                 parsed = procmime_mimeparser_parse(parser, mimeinfo);
2052         } 
2053         if (!parsed) {
2054                 switch (mimeinfo->type) {
2055                 case MIMETYPE_TEXT:
2056                         if (g_ascii_strcasecmp(mimeinfo->subtype, "plain") == 0 && short_scan) {
2057                                 return 1;
2058                         }
2059                         break;
2060
2061                 case MIMETYPE_MESSAGE:
2062                         if (g_ascii_strcasecmp(mimeinfo->subtype, "rfc822") == 0) {
2063                                 procmime_parse_message_rfc822(mimeinfo, short_scan);
2064                         }
2065                         if (g_ascii_strcasecmp(mimeinfo->subtype, "disposition-notification") == 0) {
2066                                 procmime_parse_disposition_notification(mimeinfo, 
2067                                         original_msgid, disposition_notification_hdr, short_scan);
2068                         }
2069                         break;
2070                         
2071                 case MIMETYPE_MULTIPART:
2072                         procmime_parse_multipart(mimeinfo, short_scan);
2073                         break;
2074                 
2075                 case MIMETYPE_APPLICATION:
2076                         if (g_ascii_strcasecmp(mimeinfo->subtype, "octet-stream") == 0
2077                         && original_msgid && *original_msgid 
2078                         && disposition_notification_hdr && *disposition_notification_hdr) {
2079                                 procmime_parse_disposition_notification(mimeinfo, 
2080                                         original_msgid, disposition_notification_hdr, short_scan);
2081                         }
2082                         break;
2083                 default:
2084                         break;
2085                 }
2086         }
2087
2088         return result;
2089 }
2090
2091 static gchar *typenames[] = {
2092     "text",
2093     "image",
2094     "audio",
2095     "video",
2096     "application",
2097     "message",
2098     "multipart",
2099     "unknown",
2100 };
2101
2102 static gboolean output_func(GNode *node, gpointer data)
2103 {
2104         guint i, depth;
2105         MimeInfo *mimeinfo = (MimeInfo *) node->data;
2106
2107         depth = g_node_depth(node);
2108         for (i = 0; i < depth; i++)
2109                 g_print("    ");
2110         g_print("%s/%s (offset:%d length:%d encoding: %d)\n", typenames[mimeinfo->type], mimeinfo->subtype, mimeinfo->offset, mimeinfo->length, mimeinfo->encoding_type);
2111
2112         return FALSE;
2113 }
2114
2115 static void output_mime_structure(MimeInfo *mimeinfo, int indent)
2116 {
2117         g_node_traverse(mimeinfo->node, G_PRE_ORDER, G_TRAVERSE_ALL, -1, output_func, NULL);
2118 }
2119
2120 static MimeInfo *procmime_scan_file_with_offset(const gchar *filename, int offset, gboolean short_scan)
2121 {
2122         MimeInfo *mimeinfo;
2123         GStatBuf buf;
2124
2125         if (g_stat(filename, &buf) < 0) {
2126                 FILE_OP_ERROR(filename, "stat");
2127                 return NULL;
2128         }
2129
2130         mimeinfo = procmime_mimeinfo_new();
2131         mimeinfo->content = MIMECONTENT_FILE;
2132         mimeinfo->encoding_type = ENC_UNKNOWN;
2133         mimeinfo->type = MIMETYPE_MESSAGE;
2134         mimeinfo->subtype = g_strdup("rfc822");
2135         mimeinfo->data.filename = g_strdup(filename);
2136         mimeinfo->offset = offset;
2137         mimeinfo->length = buf.st_size - offset;
2138
2139         procmime_parse_message_rfc822(mimeinfo, short_scan);
2140         if (debug_get_mode())
2141                 output_mime_structure(mimeinfo, 0);
2142
2143         return mimeinfo;
2144 }
2145
2146 static MimeInfo *procmime_scan_file_full(const gchar *filename, gboolean short_scan)
2147 {
2148         MimeInfo *mimeinfo;
2149
2150         cm_return_val_if_fail(filename != NULL, NULL);
2151
2152         mimeinfo = procmime_scan_file_with_offset(filename, 0, short_scan);
2153
2154         return mimeinfo;
2155 }
2156
2157 MimeInfo *procmime_scan_file(const gchar *filename)
2158 {
2159         return procmime_scan_file_full(filename, FALSE);
2160 }
2161
2162 static MimeInfo *procmime_scan_file_short(const gchar *filename)
2163 {
2164         return procmime_scan_file_full(filename, TRUE);
2165 }
2166
2167 static MimeInfo *procmime_scan_queue_file_full(const gchar *filename, gboolean short_scan)
2168 {
2169         FILE *fp;
2170         MimeInfo *mimeinfo;
2171         gchar buf[BUFFSIZE];
2172         gint offset = 0;
2173
2174         cm_return_val_if_fail(filename != NULL, NULL);
2175
2176         /* Open file */
2177         if ((fp = claws_fopen(filename, "rb")) == NULL)
2178                 return NULL;
2179         /* Skip queue header */
2180         while (claws_fgets(buf, sizeof(buf), fp) != NULL) {
2181                 /* new way */
2182                 if ((!strncmp(buf, "X-Claws-End-Special-Headers: 1",
2183                         strlen("X-Claws-End-Special-Headers:"))) ||
2184                    (!strncmp(buf, "X-Sylpheed-End-Special-Headers: 1",
2185                         strlen("X-Sylpheed-End-Special-Headers:"))))
2186                         break;
2187                 /* old way */
2188                 if (buf[0] == '\r' || buf[0] == '\n') break;
2189                 /* from other mailers */
2190                 if (!strncmp(buf, "Date: ", 6)
2191                 ||  !strncmp(buf, "To: ", 4)
2192                 ||  !strncmp(buf, "From: ", 6)
2193                 ||  !strncmp(buf, "Subject: ", 9)) {
2194                         rewind(fp);
2195                         break;
2196                 }
2197         }
2198         offset = ftell(fp);
2199         claws_fclose(fp);
2200
2201         mimeinfo = procmime_scan_file_with_offset(filename, offset, short_scan);
2202
2203         return mimeinfo;
2204 }
2205
2206 MimeInfo *procmime_scan_queue_file(const gchar *filename)
2207 {
2208         return procmime_scan_queue_file_full(filename, FALSE);
2209 }
2210
2211 static MimeInfo *procmime_scan_queue_file_short(const gchar *filename)
2212 {
2213         return procmime_scan_queue_file_full(filename, TRUE);
2214 }
2215
2216 typedef enum {
2217     ENC_AS_TOKEN,
2218     ENC_AS_QUOTED_STRING,
2219     ENC_AS_EXTENDED,
2220     ENC_AS_ENCWORD
2221 } EncodeAs;
2222
2223 typedef struct _ParametersData {
2224         FILE *fp;
2225         guint len;
2226         gint error;
2227 } ParametersData;
2228
2229 static void write_parameters(gpointer key, gpointer value, gpointer user_data)
2230 {
2231         gchar *param = key;
2232         gchar *val = value, *valpos, *tmp;
2233         ParametersData *pdata = (ParametersData *)user_data;
2234         GString *buf = g_string_new("");
2235         gint len;
2236
2237         EncodeAs encas = ENC_AS_TOKEN;
2238
2239         for (valpos = val; *valpos != 0; valpos++) {
2240                 if (!IS_ASCII(*valpos)) {
2241                         encas = ENC_AS_ENCWORD;
2242                         break;
2243                 }
2244             
2245                 /* CTLs */
2246                 if (((*valpos >= 0) && (*valpos < 037)) || (*valpos == 0177)) {
2247                         encas = ENC_AS_QUOTED_STRING;
2248                         continue;
2249                 }
2250
2251                 /* tspecials + SPACE */
2252                 switch (*valpos) {
2253                 case ' ':
2254                 case '(': 
2255                 case ')':
2256                 case '<':
2257                 case '>':
2258                 case '@':
2259                 case ',':
2260                 case ';':
2261                 case ':':
2262                 case '\\':
2263                 case '"':
2264                 case '/':
2265                 case '[':
2266                 case ']':
2267                 case '?':
2268                 case '=':
2269                         encas = ENC_AS_QUOTED_STRING;
2270                         continue;
2271                 }
2272         }
2273         
2274         switch (encas) {
2275         case ENC_AS_TOKEN:
2276                 g_string_append_printf(buf, "%s=%s", param, val);
2277                 break;
2278
2279         case ENC_AS_QUOTED_STRING:
2280                 g_string_append_printf(buf, "%s=\"%s\"", param, val);
2281                 break;
2282
2283 #if 0 /* we don't use that for now */
2284         case ENC_AS_EXTENDED:
2285                 if (!g_utf8_validate(val, -1, NULL))
2286                         g_string_append_printf(buf, "%s*=%s''", param,
2287                                 conv_get_locale_charset_str());
2288                 else
2289                         g_string_append_printf(buf, "%s*=%s''", param,
2290                                 CS_INTERNAL);
2291                 for (valpos = val; *valpos != '\0'; valpos++) {
2292                         if (IS_ASCII(*valpos) && isalnum(*valpos)) {
2293                                 g_string_append_printf(buf, "%c", *valpos);
2294                         } else {
2295                                 gchar hexstr[3] = "XX";
2296                                 get_hex_str(hexstr, *valpos);
2297                                 g_string_append_printf(buf, "%%%s", hexstr);
2298                         }
2299                 }
2300                 break;
2301 #else
2302         case ENC_AS_EXTENDED:
2303                 debug_print("Unhandled ENC_AS_EXTENDED.\n");
2304                 break;
2305 #endif
2306         case ENC_AS_ENCWORD:
2307                 len = MAX(strlen(val)*6, 512);
2308                 tmp = g_malloc(len+1);
2309                 codeconv_set_strict(TRUE);
2310                 conv_encode_header_full(tmp, len, val, pdata->len + strlen(param) + 4 , FALSE,
2311                         prefs_common.outgoing_charset);
2312                 codeconv_set_strict(FALSE);
2313                 if (!tmp || !*tmp) {
2314                         codeconv_set_strict(TRUE);
2315                         conv_encode_header_full(tmp, len, val, pdata->len + strlen(param) + 4 , FALSE,
2316                                 conv_get_outgoing_charset_str());
2317                         codeconv_set_strict(FALSE);
2318                 }
2319                 if (!tmp || !*tmp) {
2320                         codeconv_set_strict(TRUE);
2321                         conv_encode_header_full(tmp, len, val, pdata->len + strlen(param) + 4 , FALSE,
2322                                 CS_UTF_8);
2323                         codeconv_set_strict(FALSE);
2324                 }
2325                 if (!tmp || !*tmp) {
2326                         conv_encode_header_full(tmp, len, val, pdata->len + strlen(param) + 4 , FALSE,
2327                                 CS_UTF_8);
2328                 }
2329                 g_string_append_printf(buf, "%s=\"%s\"", param, tmp);
2330                 g_free(tmp);
2331                 break;
2332
2333         }
2334         
2335         if (buf->str && strlen(buf->str)) {
2336                 tmp = strstr(buf->str, "\n");
2337                 if (tmp)
2338                         len = (tmp - buf->str);
2339                 else
2340                         len = strlen(buf->str);
2341                 if (pdata->len + len > 76) {
2342                         if (fprintf(pdata->fp, ";\n %s", buf->str) < 0)
2343                                 pdata->error = TRUE;
2344                         pdata->len = strlen(buf->str) + 1;
2345                 } else {
2346                         if (fprintf(pdata->fp, "; %s", buf->str) < 0)
2347                                 pdata->error = TRUE;
2348                         pdata->len += strlen(buf->str) + 2;
2349                 }
2350         }
2351         g_string_free(buf, TRUE);
2352 }
2353
2354 #define TRY(func) { \
2355         if (!(func)) { \
2356                 return -1; \
2357         } \
2358 }
2359
2360 int procmime_write_mime_header(MimeInfo *mimeinfo, FILE *fp)
2361 {
2362         struct TypeTable *type_table;
2363         ParametersData *pdata = g_new0(ParametersData, 1);
2364         debug_print("procmime_write_mime_header\n");
2365         
2366         pdata->fp = fp;
2367         pdata->error = FALSE;
2368         for (type_table = mime_type_table; type_table->str != NULL; type_table++)
2369                 if (mimeinfo->type == type_table->type) {
2370                         gchar *buf = g_strdup_printf(
2371                                 "Content-Type: %s/%s", type_table->str, mimeinfo->subtype);
2372                         if (fprintf(fp, "%s", buf) < 0) {
2373                                 g_free(buf);
2374                                 g_free(pdata);
2375                                 return -1;
2376                         }
2377                         pdata->len = strlen(buf);
2378                         g_free(buf);
2379                         break;
2380                 }
2381         g_hash_table_foreach(mimeinfo->typeparameters, write_parameters, pdata);
2382         if (pdata->error == TRUE) {
2383                 g_free(pdata);
2384                 return -1;
2385         }
2386         g_free(pdata);
2387
2388         TRY(fprintf(fp, "\n") >= 0);
2389
2390         if (mimeinfo->encoding_type != ENC_UNKNOWN)
2391                 TRY(fprintf(fp, "Content-Transfer-Encoding: %s\n", procmime_get_encoding_str(mimeinfo->encoding_type)) >= 0);
2392
2393         if (mimeinfo->description != NULL)
2394                 TRY(fprintf(fp, "Content-Description: %s\n", mimeinfo->description) >= 0);
2395
2396         if (mimeinfo->id != NULL)
2397                 TRY(fprintf(fp, "Content-ID: %s\n", mimeinfo->id) >= 0);
2398
2399         if (mimeinfo->location != NULL)
2400                 TRY(fprintf(fp, "Content-Location: %s\n", mimeinfo->location) >= 0);
2401
2402         if (mimeinfo->disposition != DISPOSITIONTYPE_UNKNOWN) {
2403                 ParametersData *pdata = g_new0(ParametersData, 1);
2404                 gchar *buf = NULL;
2405                 if (mimeinfo->disposition == DISPOSITIONTYPE_INLINE)
2406                         buf = g_strdup("Content-Disposition: inline");
2407                 else if (mimeinfo->disposition == DISPOSITIONTYPE_ATTACHMENT)
2408                         buf = g_strdup("Content-Disposition: attachment");
2409                 else
2410                         buf = g_strdup("Content-Disposition: unknown");
2411
2412                 if (fprintf(fp, "%s", buf) < 0) {
2413                         g_free(buf);
2414                         g_free(pdata);
2415                         return -1;
2416                 }
2417                 pdata->len = strlen(buf);
2418                 g_free(buf);
2419
2420                 pdata->fp = fp;
2421                 pdata->error = FALSE;
2422                 g_hash_table_foreach(mimeinfo->dispositionparameters, write_parameters, pdata);
2423                 if (pdata->error == TRUE) {
2424                         g_free(pdata);
2425                         return -1;
2426                 }
2427                 g_free(pdata);
2428                 TRY(fprintf(fp, "\n") >= 0);
2429         }
2430
2431         TRY(fprintf(fp, "\n") >= 0);
2432         
2433         return 0;
2434 }
2435
2436 static gint procmime_write_message_rfc822(MimeInfo *mimeinfo, FILE *fp)
2437 {
2438         FILE *infp;
2439         GNode *childnode;
2440         MimeInfo *child;
2441         gchar buf[BUFFSIZE];
2442         gboolean skip = FALSE;;
2443         size_t len;
2444
2445         debug_print("procmime_write_message_rfc822\n");
2446
2447         /* write header */
2448         switch (mimeinfo->content) {
2449         case MIMECONTENT_FILE:
2450                 if ((infp = claws_fopen(mimeinfo->data.filename, "rb")) == NULL) {
2451                         FILE_OP_ERROR(mimeinfo->data.filename, "claws_fopen");
2452                         return -1;
2453                 }
2454                 if (fseek(infp, mimeinfo->offset, SEEK_SET) < 0) {
2455                         FILE_OP_ERROR(mimeinfo->data.filename, "fseek");
2456                         claws_fclose(infp);
2457                         return -1;
2458                 }
2459                 while (claws_fgets(buf, sizeof(buf), infp) == buf) {
2460                         strcrchomp(buf);
2461                         if (buf[0] == '\n' && buf[1] == '\0')
2462                                 break;
2463                         if (skip && (buf[0] == ' ' || buf[0] == '\t'))
2464                                 continue;
2465                         if (g_ascii_strncasecmp(buf, "MIME-Version:", 13) == 0 ||
2466                             g_ascii_strncasecmp(buf, "Content-Type:", 13) == 0 ||
2467                             g_ascii_strncasecmp(buf, "Content-Transfer-Encoding:", 26) == 0 ||
2468                             g_ascii_strncasecmp(buf, "Content-Description:", 20) == 0 ||
2469                             g_ascii_strncasecmp(buf, "Content-ID:", 11) == 0 ||
2470                             g_ascii_strncasecmp(buf, "Content-Location:", 17) == 0 ||
2471                             g_ascii_strncasecmp(buf, "Content-Disposition:", 20) == 0) {
2472                                 skip = TRUE;
2473                                 continue;
2474                         }
2475                         len = strlen(buf);
2476                         if (claws_fwrite(buf, sizeof(gchar), len, fp) < len) {
2477                                 g_warning("failed to dump %"G_GSIZE_FORMAT" bytes from file", len);
2478                                 claws_fclose(infp);
2479                                 return -1;
2480                         }
2481                         skip = FALSE;
2482                 }
2483                 claws_fclose(infp);
2484                 break;
2485
2486         case MIMECONTENT_MEM:
2487                 len = strlen(mimeinfo->data.mem);
2488                 if (claws_fwrite(mimeinfo->data.mem, sizeof(gchar), len, fp) < len) {
2489                         g_warning("failed to dump %"G_GSIZE_FORMAT" bytes from mem", len);
2490                         return -1;
2491                 }
2492                 break;
2493
2494         default:
2495                 break;
2496         }
2497
2498         childnode = mimeinfo->node->children;
2499         if (childnode == NULL)
2500                 return -1;
2501
2502         child = (MimeInfo *) childnode->data;
2503         if (fprintf(fp, "MIME-Version: 1.0\n") < 0) {
2504                 g_warning("failed to write mime version");
2505                 return -1;
2506         }
2507         if (procmime_write_mime_header(child, fp) < 0)
2508                 return -1;
2509         return procmime_write_mimeinfo(child, fp);
2510 }
2511
2512 static gint procmime_write_multipart(MimeInfo *mimeinfo, FILE *fp)
2513 {
2514         FILE *infp;
2515         GNode *childnode;
2516         gchar *boundary, *str, *str2;
2517         gchar buf[BUFFSIZE];
2518         gboolean firstboundary;
2519         size_t len;
2520
2521         debug_print("procmime_write_multipart\n");
2522
2523         boundary = g_hash_table_lookup(mimeinfo->typeparameters, "boundary");
2524
2525         switch (mimeinfo->content) {
2526         case MIMECONTENT_FILE:
2527                 if ((infp = claws_fopen(mimeinfo->data.filename, "rb")) == NULL) {
2528                         FILE_OP_ERROR(mimeinfo->data.filename, "claws_fopen");
2529                         return -1;
2530                 }
2531                 if (fseek(infp, mimeinfo->offset, SEEK_SET) < 0) {
2532                         FILE_OP_ERROR(mimeinfo->data.filename, "fseek");
2533                         claws_fclose(infp);
2534                         return -1;
2535                 }
2536                 while (claws_fgets(buf, sizeof(buf), infp) == buf) {
2537                         if (IS_BOUNDARY(buf, boundary, strlen(boundary)))
2538                                 break;
2539                         len = strlen(buf);
2540                         if (claws_fwrite(buf, sizeof(gchar), len, fp) < len) {
2541                                 g_warning("failed to write %"G_GSIZE_FORMAT, len);
2542                                 claws_fclose(infp);
2543                                 return -1;
2544                         }
2545                 }
2546                 claws_fclose(infp);
2547                 break;
2548
2549         case MIMECONTENT_MEM:
2550                 str = g_strdup(mimeinfo->data.mem);
2551                 if (((str2 = strstr(str, boundary)) != NULL) && ((str2 - str) >= 2) &&
2552                     (*(str2 - 1) == '-') && (*(str2 - 2) == '-'))
2553                         *(str2 - 2) = '\0';
2554                 len = strlen(str);
2555                 if (claws_fwrite(str, sizeof(gchar), len, fp) < len) {
2556                         g_warning("failed to write %"G_GSIZE_FORMAT" from mem", len);
2557                         g_free(str);
2558                         return -1;
2559                 }
2560                 g_free(str);
2561                 break;
2562
2563         default:
2564                 break;
2565         }
2566
2567         childnode = mimeinfo->node->children;
2568         firstboundary = TRUE;
2569         while (childnode != NULL) {
2570                 MimeInfo *child = childnode->data;
2571
2572                 if (firstboundary)
2573                         firstboundary = FALSE;
2574                 else
2575                         TRY(fprintf(fp, "\n") >= 0);
2576                         
2577                 TRY(fprintf(fp, "--%s\n", boundary) >= 0);
2578
2579                 if (procmime_write_mime_header(child, fp) < 0)
2580                         return -1;
2581                 if (procmime_write_mimeinfo(child, fp) < 0)
2582                         return -1;
2583
2584                 childnode = g_node_next_sibling(childnode);
2585         }       
2586         TRY(fprintf(fp, "\n--%s--\n", boundary) >= 0);
2587
2588         return 0;
2589 }
2590
2591 gint procmime_write_mimeinfo(MimeInfo *mimeinfo, FILE *fp)
2592 {
2593         FILE *infp;
2594         size_t len;
2595         debug_print("procmime_write_mimeinfo\n");
2596
2597         if (G_NODE_IS_LEAF(mimeinfo->node)) {
2598                 switch (mimeinfo->content) {
2599                 case MIMECONTENT_FILE:
2600                         if ((infp = claws_fopen(mimeinfo->data.filename, "rb")) == NULL) {
2601                                 FILE_OP_ERROR(mimeinfo->data.filename, "claws_fopen");
2602                                 return -1;
2603                         }
2604                         copy_file_part_to_fp(infp, mimeinfo->offset, mimeinfo->length, fp);
2605                         claws_fclose(infp);
2606                         return 0;
2607
2608                 case MIMECONTENT_MEM:
2609                         len = strlen(mimeinfo->data.mem);
2610                         if (claws_fwrite(mimeinfo->data.mem, sizeof(gchar), len, fp) < len)
2611                                 return -1;
2612                         return 0;
2613
2614                 default:
2615                         return 0;
2616                 }
2617         } else {
2618                 /* Call writer for mime type */
2619                 switch (mimeinfo->type) {
2620                 case MIMETYPE_MESSAGE:
2621                         if (g_ascii_strcasecmp(mimeinfo->subtype, "rfc822") == 0) {
2622                                 return procmime_write_message_rfc822(mimeinfo, fp);
2623                         }
2624                         break;
2625                         
2626                 case MIMETYPE_MULTIPART:
2627                         return procmime_write_multipart(mimeinfo, fp);
2628                         
2629                 default:
2630                         break;
2631                 }
2632
2633                 return -1;
2634         }
2635
2636         return 0;
2637 }
2638
2639 gchar *procmime_get_part_file_name(MimeInfo *mimeinfo)
2640 {
2641         gchar *base;
2642
2643         if ((mimeinfo->type == MIMETYPE_TEXT) && !g_ascii_strcasecmp(mimeinfo->subtype, "html"))
2644                 base = g_strdup("mimetmp.html");
2645         else {
2646                 const gchar *basetmp;
2647                 gchar *basename;
2648
2649                 basetmp = procmime_mimeinfo_get_parameter(mimeinfo, "filename");
2650                 if (basetmp == NULL)
2651                         basetmp = procmime_mimeinfo_get_parameter(mimeinfo, "name");
2652                 if (basetmp == NULL)
2653                         basetmp = "mimetmp";
2654                 basename = g_path_get_basename(basetmp);
2655                 if (*basename == '\0') {
2656                         g_free(basename);
2657                         basename = g_strdup("mimetmp");
2658                 }
2659                 base = conv_filename_from_utf8(basename);
2660                 g_free(basename);
2661                 subst_for_shellsafe_filename(base);
2662         }
2663         
2664         return base;
2665 }
2666
2667 void *procmime_get_part_as_string(MimeInfo *mimeinfo,
2668                 gboolean null_terminate)
2669 {
2670         FILE *infp;
2671         gchar *data;
2672         gint length, readlength;
2673
2674         cm_return_val_if_fail(mimeinfo != NULL, NULL);
2675
2676         if (mimeinfo->encoding_type != ENC_BINARY &&
2677                         !procmime_decode_content(mimeinfo))
2678                 return NULL;
2679
2680         if (mimeinfo->content == MIMECONTENT_MEM)
2681                 return g_strdup(mimeinfo->data.mem);
2682
2683         if ((infp = claws_fopen(mimeinfo->data.filename, "rb")) == NULL) {
2684                 FILE_OP_ERROR(mimeinfo->data.filename, "claws_fopen");
2685                 return NULL;
2686         }
2687
2688         if (fseek(infp, mimeinfo->offset, SEEK_SET) < 0) {
2689                 FILE_OP_ERROR(mimeinfo->data.filename, "fseek");
2690                 claws_fclose(infp);
2691                 return NULL;
2692         }
2693
2694         length = mimeinfo->length;
2695
2696         data = g_malloc(null_terminate ? length + 1 : length);
2697         if (data == NULL) {
2698                 g_warning("Could not allocate %d bytes for procmime_get_part_as_string.\n",
2699                                 (null_terminate ? length + 1 : length));
2700                 claws_fclose(infp);
2701                 return NULL;
2702         }
2703
2704         readlength = claws_fread(data, length, 1, infp);
2705         if (readlength <= 0) {
2706                 FILE_OP_ERROR(mimeinfo->data.filename, "fread");
2707                 g_free(data);
2708                 claws_fclose(infp);
2709                 return NULL;
2710         }
2711
2712         claws_fclose(infp);
2713
2714         if (null_terminate)
2715                 data[length] = '\0';
2716
2717         return data;
2718 }
2719
2720 /* Returns an open GInputStream. The caller should just
2721  * read mimeinfo->length bytes from it and then release it. */
2722 GInputStream *procmime_get_part_as_inputstream(MimeInfo *mimeinfo)
2723 {
2724         cm_return_val_if_fail(mimeinfo != NULL, NULL);
2725
2726         if (mimeinfo->encoding_type != ENC_BINARY &&
2727                         !procmime_decode_content(mimeinfo)) {
2728                 g_warning("could not decode part");
2729                 return NULL;
2730         }
2731         if (mimeinfo->content == MIMECONTENT_MEM) {
2732                 /* NULL for destroy func, since we're not copying
2733                  * the data for the stream. */
2734                 return g_memory_input_stream_new_from_data(
2735                                 mimeinfo->data.mem,
2736                                 mimeinfo->length, NULL);
2737         } else {
2738                 return g_memory_input_stream_new_from_data(
2739                                 procmime_get_part_as_string(mimeinfo, FALSE),
2740                                 mimeinfo->length, g_free);
2741         }
2742 }
2743
2744 GdkPixbuf *procmime_get_part_as_pixbuf(MimeInfo *mimeinfo, GError **error)
2745 {
2746         GdkPixbuf *pixbuf;
2747         GInputStream *stream;
2748
2749         if (error)
2750                 *error = NULL;
2751
2752         stream = procmime_get_part_as_inputstream(mimeinfo);
2753         if (stream == NULL) {
2754                 if (error)
2755                         *error = g_error_new_literal(G_FILE_ERROR, -1, _("Could not decode part"));
2756                 return NULL;
2757         }
2758
2759         pixbuf = gdk_pixbuf_new_from_stream(stream, NULL, error);
2760         g_object_unref(stream);
2761
2762         if (error && *error != NULL)
2763                 return NULL;
2764
2765         return pixbuf;
2766 }
2767