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add user specified stylesheet option
[claws.git] / src / procmime.c
blob2275c8991031eae2a05e3083498795f42da42b5d
1 /*
2 * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
3 * Copyright (C) 1999-2012 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
20 #ifdef HAVE_CONFIG_H
21 # include "config.h"
22 #include "claws-features.h"
23 #endif
24
25 #define _GNU_SOURCE
26 #include <stdio.h>
27
28 #include "defs.h"
29
30 #include <glib.h>
31 #include <glib/gi18n.h>
32 #include <string.h>
33 #if HAVE_LOCALE_H
34 # include <locale.h>
35 #endif
36 #include <ctype.h>
37 #include <sys/types.h>
38 #include <sys/stat.h>
39 #include <unistd.h>
40 #include <errno.h>
41
42 #include "procmime.h"
43 #include "procheader.h"
44 #include "base64.h"
45 #include "quoted-printable.h"
46 #include "uuencode.h"
47 #include "unmime.h"
48 #include "html.h"
49 #include "enriched.h"
50 #include "codeconv.h"
51 #include "utils.h"
52 #include "prefs_common.h"
53 #include "prefs_gtk.h"
54 #include "alertpanel.h"
55 #include "timing.h"
56 #include "privacy.h"
57
58 static GHashTable *procmime_get_mime_type_table (void);
59 static MimeInfo *procmime_scan_file_short(const gchar *filename);
60 static MimeInfo *procmime_scan_queue_file_short(const gchar *filename);
61 static MimeInfo *procmime_scan_queue_file_full(const gchar *filename, gboolean short_scan);
62
63 MimeInfo *procmime_mimeinfo_new(void)
64 {
65 MimeInfo *mimeinfo;
66
67 mimeinfo = g_new0(MimeInfo, 1);
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)
148 {
149 GNode *node;
150
151 if (!mimeinfo)
152 return;
153
154 node = mimeinfo->node;
155 g_node_traverse(node, G_IN_ORDER, G_TRAVERSE_ALL, -1, free_func, NULL);
156
157 g_node_destroy(node);
158 }
159
160 MimeInfo *procmime_mimeinfo_parent(MimeInfo *mimeinfo)
161 {
162 cm_return_val_if_fail(mimeinfo != NULL, NULL);
163 cm_return_val_if_fail(mimeinfo->node != NULL, NULL);
164
165 if (mimeinfo->node->parent == NULL)
166 return NULL;
167 return (MimeInfo *) mimeinfo->node->parent->data;
168 }
169
170 MimeInfo *procmime_mimeinfo_next(MimeInfo *mimeinfo)
171 {
172 cm_return_val_if_fail(mimeinfo != NULL, NULL);
173 cm_return_val_if_fail(mimeinfo->node != NULL, NULL);
174
175 if (mimeinfo->node->children)
176 return (MimeInfo *) mimeinfo->node->children->data;
177 if (mimeinfo->node->next)
178 return (MimeInfo *) mimeinfo->node->next->data;
179
180 if (mimeinfo->node->parent == NULL)
181 return NULL;
182
183 while (mimeinfo->node->parent != NULL) {
184 mimeinfo = (MimeInfo *) mimeinfo->node->parent->data;
185 if (mimeinfo->node->next)
186 return (MimeInfo *) mimeinfo->node->next->data;
187 }
188
189 return NULL;
190 }
191
192 MimeInfo *procmime_scan_message(MsgInfo *msginfo)
193 {
194 gchar *filename;
195 MimeInfo *mimeinfo;
196
197 filename = procmsg_get_message_file_path(msginfo);
198 if (!filename || !is_file_exist(filename)) {
199 g_free(filename);
200 return NULL;
201 }
202
203 if (!folder_has_parent_of_type(msginfo->folder, F_QUEUE) &&
204 !folder_has_parent_of_type(msginfo->folder, F_DRAFT))
205 mimeinfo = procmime_scan_file(filename);
206 else
207 mimeinfo = procmime_scan_queue_file(filename);
208 g_free(filename);
209
210 return mimeinfo;
211 }
212
213 MimeInfo *procmime_scan_message_short(MsgInfo *msginfo)
214 {
215 gchar *filename;
216 MimeInfo *mimeinfo;
217
218 filename = procmsg_get_message_file_path(msginfo);
219 if (!filename || !is_file_exist(filename)) {
220 g_free(filename);
221 return NULL;
222 }
223
224 if (!folder_has_parent_of_type(msginfo->folder, F_QUEUE) &&
225 !folder_has_parent_of_type(msginfo->folder, F_DRAFT))
226 mimeinfo = procmime_scan_file_short(filename);
227 else
228 mimeinfo = procmime_scan_queue_file_short(filename);
229 g_free(filename);
230
231 return mimeinfo;
232 }
233
234 enum
235 {
236 H_CONTENT_TRANSFER_ENCODING = 0,
237 H_CONTENT_TYPE = 1,
238 H_CONTENT_DISPOSITION = 2,
239 H_CONTENT_DESCRIPTION = 3,
240 H_SUBJECT = 4
241 };
242
243 const gchar *procmime_mimeinfo_get_parameter(MimeInfo *mimeinfo, const gchar *name)
244 {
245 const gchar *value;
246
247 cm_return_val_if_fail(mimeinfo != NULL, NULL);
248 cm_return_val_if_fail(name != NULL, NULL);
249
250 value = g_hash_table_lookup(mimeinfo->dispositionparameters, name);
251 if (value == NULL)
252 value = g_hash_table_lookup(mimeinfo->typeparameters, name);
253
254 return value;
255 }
256
257 #ifdef HAVE_FGETS_UNLOCKED
258 #define SC_FGETS fgets_unlocked
259 #define SC_FPUTS fputs_unlocked
260 #define SC_FPUTC fputc_unlocked
261 #define SC_FREAD fread_unlocked
262 #define SC_FWRITE fwrite_unlocked
263 #define SC_FEOF feof_unlocked
264 #define SC_FERROR ferror_unlocked
265
266 static FILE *procmime_fopen(const gchar *file, const gchar *mode)
267 {
268 FILE *fp = g_fopen(file, mode);
269 if (!fp)
270 return NULL;
271 flockfile(fp);
272 return fp;
273 }
274 static int procmime_fclose(FILE *fp)
275 {
276 funlockfile(fp);
277 return fclose(fp);
278 }
279 #else
280 #define SC_FGETS fgets
281 #define SC_FPUTS fputs
282 #define SC_FPUTC fputc
283 #define SC_FREAD fread
284 #define SC_FWRITE fwrite
285 #define SC_FEOF feof
286 #define SC_FERROR ferror
287 #define procmime_fopen g_fopen
288 #define procmime_fclose fclose
289 #endif
290
291 #define FLUSH_LASTLINE() { \
292 if (*lastline != '\0') { \
293 gint llen = 0; \
294 strretchomp(lastline); \
295 llen = strlen(lastline); \
296 if (lastline[llen-1] == ' ' && strcmp(lastline,"-- ")) { \
297 /* this is flowed */ \
298 if (delsp) \
299 lastline[llen-1] = '\0'; \
300 if (SC_FPUTS(lastline, outfp) == EOF) \
301 err = TRUE; \
302 } else { \
303 if (SC_FPUTS(lastline, outfp) == EOF) \
304 err = TRUE; \
305 if (SC_FPUTS("\n", outfp) == EOF) \
306 err = TRUE; \
307 } \
308 } \
309 strcpy(lastline, buf); \
310 }
311
312 gboolean procmime_decode_content(MimeInfo *mimeinfo)
313 {
314 gchar buf[BUFFSIZE];
315 gint readend;
316 gchar *tmpfilename;
317 FILE *outfp, *infp;
318 struct stat statbuf;
319 gboolean tmp_file = FALSE;
320 gboolean flowed = FALSE;
321 gboolean delsp = FALSE;
322 gboolean err = FALSE;
323
324 EncodingType encoding = forced_encoding
325 ? forced_encoding
326 : mimeinfo->encoding_type;
327 gchar lastline[BUFFSIZE];
328 memset(lastline, 0, BUFFSIZE);
329
330 cm_return_val_if_fail(mimeinfo != NULL, FALSE);
331
332 if (prefs_common.respect_flowed_format &&
333 mimeinfo->type == MIMETYPE_TEXT &&
334 !strcasecmp(mimeinfo->subtype, "plain")) {
335 if (procmime_mimeinfo_get_parameter(mimeinfo, "format") != NULL &&
336 !strcasecmp(procmime_mimeinfo_get_parameter(mimeinfo, "format"),"flowed"))
337 flowed = TRUE;
338 if (flowed &&
339 procmime_mimeinfo_get_parameter(mimeinfo, "delsp") != NULL &&
340 !strcasecmp(procmime_mimeinfo_get_parameter(mimeinfo, "delsp"),"yes"))
341 delsp = TRUE;
342 }
343
344 if (!flowed && (
345 encoding == ENC_UNKNOWN ||
346 encoding == ENC_BINARY ||
347 encoding == ENC_7BIT ||
348 encoding == ENC_8BIT
349 ))
350 return TRUE;
351
352 if (mimeinfo->type == MIMETYPE_MULTIPART || mimeinfo->type == MIMETYPE_MESSAGE)
353 return TRUE;
354
355 if (mimeinfo->data.filename == NULL)
356 return FALSE;
357
358 infp = procmime_fopen(mimeinfo->data.filename, "rb");
359 if (!infp) {
360 perror("fopen");
361 return FALSE;
362 }
363 if (fseek(infp, mimeinfo->offset, SEEK_SET) < 0) {
364 perror("fseek");
365 procmime_fclose(infp);
366 return FALSE;
367 }
368
369 outfp = get_tmpfile_in_dir(get_mime_tmp_dir(), &tmpfilename);
370 if (!outfp) {
371 perror("tmpfile");
372 procmime_fclose(infp);
373 return FALSE;
374 }
375 tmp_file = TRUE;
376 readend = mimeinfo->offset + mimeinfo->length;
377
378 if (encoding == ENC_QUOTED_PRINTABLE) {
379 while ((ftell(infp) < readend) && (SC_FGETS(buf, sizeof(buf), infp) != NULL)) {
380 gint len;
381 len = qp_decode_line(buf);
382 buf[len]='\0';
383 if (!flowed) {
384 if (SC_FWRITE(buf, 1, len, outfp) < len)
385 err = TRUE;
386 } else {
387 FLUSH_LASTLINE();
388 }
389 }
390 if (flowed)
391 FLUSH_LASTLINE();
392 } else if (encoding == ENC_BASE64) {
393 gchar outbuf[BUFFSIZE];
394 gint len, inlen, inread;
395 Base64Decoder *decoder;
396 gboolean got_error = FALSE;
397 gboolean uncanonicalize = FALSE;
398 FILE *tmpfp = NULL;
399 gboolean null_bytes = FALSE;
400 gboolean starting = TRUE;
401
402 if (mimeinfo->type == MIMETYPE_TEXT ||
403 mimeinfo->type == MIMETYPE_MESSAGE) {
404 uncanonicalize = TRUE;
405 tmpfp = my_tmpfile();
406 if (!tmpfp) {
407 perror("tmpfile");
408 if (tmp_file)
409 procmime_fclose(outfp);
410 procmime_fclose(infp);
411 return FALSE;
412 }
413 #ifdef HAVE_FGETS_UNLOCKED
414 flockfile(tmpfp);
415 #endif
416 } else
417 tmpfp = outfp;
418
419 decoder = base64_decoder_new();
420 while ((inlen = MIN(readend - ftell(infp), sizeof(buf))) > 0 && !err) {
421 inread = SC_FREAD(buf, 1, inlen, infp);
422 len = base64_decoder_decode(decoder, buf, outbuf, inread);
423 if (uncanonicalize == TRUE && strlen(outbuf) < len && starting) {
424 uncanonicalize = FALSE;
425 null_bytes = TRUE;
426 }
427 starting = FALSE;
428 if (((inread != inlen) || len < 0) && !got_error) {
429 g_warning("Bad BASE64 content.\n");
430 if (SC_FWRITE(_("[Error decoding BASE64]\n"),
431 sizeof(gchar),
432 strlen(_("[Error decoding BASE64]\n")),
433 tmpfp) < strlen(_("[Error decoding BASE64]\n")))
434 g_warning("error decoding BASE64");
435 got_error = TRUE;
436 continue;
437 } else if (len >= 0) {
438 /* print out the error message only once
439 * per block */
440 if (null_bytes) {
441 /* we won't uncanonicalize, output to outfp directly */
442 if (SC_FWRITE(outbuf, sizeof(gchar), len, outfp) < len)
443 err = TRUE;
444 } else {
445 if (SC_FWRITE(outbuf, sizeof(gchar), len, tmpfp) < len)
446 err = TRUE;
447 }
448 got_error = FALSE;
449 }
450 }
451 base64_decoder_free(decoder);
452
453 if (uncanonicalize) {
454 rewind(tmpfp);
455 while (SC_FGETS(buf, sizeof(buf), tmpfp) != NULL) {
456 strcrchomp(buf);
457 if (SC_FPUTS(buf, outfp) == EOF)
458 err = TRUE;
459 }
460 procmime_fclose(tmpfp);
461 }
462 } else if (encoding == ENC_X_UUENCODE) {
463 gchar outbuf[BUFFSIZE];
464 gint len;
465 gboolean flag = FALSE;
466
467 while ((ftell(infp) < readend) && (SC_FGETS(buf, sizeof(buf), infp) != NULL)) {
468 if (!flag && strncmp(buf,"begin ", 6)) continue;
469
470 if (flag) {
471 len = fromuutobits(outbuf, buf);
472 if (len <= 0) {
473 if (len < 0)
474 g_warning("Bad UUENCODE content(%d)\n", len);
475 break;
476 }
477 if (SC_FWRITE(outbuf, sizeof(gchar), len, outfp) < len)
478 err = TRUE;
479 } else
480 flag = TRUE;
481 }
482 } else {
483 while ((ftell(infp) < readend) && (SC_FGETS(buf, sizeof(buf), infp) != NULL)) {
484 if (!flowed) {
485 if (SC_FPUTS(buf, outfp) == EOF)
486 err = TRUE;
487 } else {
488 FLUSH_LASTLINE();
489 }
490 }
491 if (flowed)
492 FLUSH_LASTLINE();
493 if (err == TRUE)
494 g_warning("write error");
495 }
496
497 procmime_fclose(outfp);
498 procmime_fclose(infp);
499
500 if (err == TRUE) {
501 return FALSE;
502 }
503
504 if (g_stat(tmpfilename, &statbuf) < 0) {
505 FILE_OP_ERROR(tmpfilename, "stat");
506 return FALSE;
507 }
508
509 if (mimeinfo->tmp)
510 claws_unlink(mimeinfo->data.filename);
511 g_free(mimeinfo->data.filename);
512 mimeinfo->data.filename = tmpfilename;
513 mimeinfo->tmp = TRUE;
514 mimeinfo->offset = 0;
515 mimeinfo->length = statbuf.st_size;
516 mimeinfo->encoding_type = ENC_BINARY;
517
518 return TRUE;
519 }
520
521 #define B64_LINE_SIZE 57
522 #define B64_BUFFSIZE 77
523
524 gboolean procmime_encode_content(MimeInfo *mimeinfo, EncodingType encoding)
525 {
526 FILE *infp = NULL, *outfp;
527 gint len;
528 gchar *tmpfilename;
529 struct stat statbuf;
530 gboolean err = FALSE;
531
532 if (mimeinfo->content == MIMECONTENT_EMPTY)
533 return TRUE;
534
535 if (mimeinfo->encoding_type != ENC_UNKNOWN &&
536 mimeinfo->encoding_type != ENC_BINARY &&
537 mimeinfo->encoding_type != ENC_7BIT &&
538 mimeinfo->encoding_type != ENC_8BIT)
539 if(!procmime_decode_content(mimeinfo))
540 return FALSE;
541
542 outfp = get_tmpfile_in_dir(get_mime_tmp_dir(), &tmpfilename);
543 if (!outfp) {
544 perror("tmpfile");
545 return FALSE;
546 }
547 #ifdef HAVE_FGETS_UNLOCKED
548 flockfile(outfp);
549 #endif
550
551 if (mimeinfo->content == MIMECONTENT_FILE && mimeinfo->data.filename) {
552 if ((infp = procmime_fopen(mimeinfo->data.filename, "rb")) == NULL) {
553 g_warning("Can't open file %s\n", mimeinfo->data.filename);
554 procmime_fclose(outfp);
555 return FALSE;
556 }
557 } else if (mimeinfo->content == MIMECONTENT_MEM) {
558 infp = str_open_as_stream(mimeinfo->data.mem);
559 if (infp == NULL) {
560 procmime_fclose(outfp);
561 return FALSE;
562 }
563 #ifdef HAVE_FGETS_UNLOCKED
564 flockfile(infp);
565 #endif
566 } else {
567 procmime_fclose(outfp);
568 g_warning("Unknown mimeinfo");
569 return FALSE;
570 }
571
572 if (encoding == ENC_BASE64) {
573 gchar inbuf[B64_LINE_SIZE], outbuf[B64_BUFFSIZE];
574 FILE *tmp_fp = infp;
575 gchar *tmp_file = NULL;
576
577 if (mimeinfo->type == MIMETYPE_TEXT ||
578 mimeinfo->type == MIMETYPE_MESSAGE) {
579 if (mimeinfo->content == MIMECONTENT_FILE) {
580 tmp_file = get_tmp_file();
581 if (canonicalize_file(mimeinfo->data.filename, tmp_file) < 0) {
582 g_free(tmp_file);
583 procmime_fclose(infp);
584 procmime_fclose(outfp);
585 return FALSE;
586 }
587 if ((tmp_fp = procmime_fopen(tmp_file, "rb")) == NULL) {
588 FILE_OP_ERROR(tmp_file, "fopen");
589 claws_unlink(tmp_file);
590 g_free(tmp_file);
591 procmime_fclose(infp);
592 procmime_fclose(outfp);
593 return FALSE;
594 }
595 } else {
596 gchar *out = canonicalize_str(mimeinfo->data.mem);
597 procmime_fclose(infp);
598 infp = str_open_as_stream(out);
599 tmp_fp = infp;
600 g_free(out);
601 if (infp == NULL) {
602 procmime_fclose(outfp);
603 return FALSE;
604 }
605 #ifdef HAVE_FGETS_UNLOCKED
606 flockfile(infp);
607 #endif
608 }
609 }
610
611 while ((len = SC_FREAD(inbuf, sizeof(gchar),
612 B64_LINE_SIZE, tmp_fp))
613 == B64_LINE_SIZE) {
614 base64_encode(outbuf, inbuf, B64_LINE_SIZE);
615 if (SC_FPUTS(outbuf, outfp) == EOF)
616 err = TRUE;
617 if (SC_FPUTC('\n', outfp) == EOF)
618 err = TRUE;
619 }
620 if (len > 0 && SC_FEOF(tmp_fp)) {
621 base64_encode(outbuf, inbuf, len);
622 if (SC_FPUTS(outbuf, outfp) == EOF)
623 err = TRUE;
624 if (SC_FPUTC('\n', outfp) == EOF)
625 err = TRUE;
626 }
627
628 if (tmp_file) {
629 procmime_fclose(tmp_fp);
630 claws_unlink(tmp_file);
631 g_free(tmp_file);
632 }
633 } else if (encoding == ENC_QUOTED_PRINTABLE) {
634 gchar inbuf[BUFFSIZE], outbuf[BUFFSIZE * 4];
635
636 while (SC_FGETS(inbuf, sizeof(inbuf), infp) != NULL) {
637 qp_encode_line(outbuf, inbuf);
638
639 if (!strncmp("From ", outbuf, sizeof("From ")-1)) {
640 gchar *tmpbuf = outbuf;
641
642 tmpbuf += sizeof("From ")-1;
643
644 if (SC_FPUTS("=46rom ", outfp) == EOF)
645 err = TRUE;
646 if (SC_FPUTS(tmpbuf, outfp) == EOF)
647 err = TRUE;
648 } else {
649 if (SC_FPUTS(outbuf, outfp) == EOF)
650 err = TRUE;
651 }
652 }
653 } else {
654 gchar buf[BUFFSIZE];
655
656 while (SC_FGETS(buf, sizeof(buf), infp) != NULL) {
657 strcrchomp(buf);
658 if (SC_FPUTS(buf, outfp) == EOF)
659 err = TRUE;
660 }
661 }
662
663 procmime_fclose(outfp);
664 procmime_fclose(infp);
665
666 if (err == TRUE)
667 return FALSE;
668
669 if (mimeinfo->content == MIMECONTENT_FILE) {
670 if (mimeinfo->tmp && (mimeinfo->data.filename != NULL))
671 claws_unlink(mimeinfo->data.filename);
672 g_free(mimeinfo->data.filename);
673 } else if (mimeinfo->content == MIMECONTENT_MEM) {
674 if (mimeinfo->tmp && (mimeinfo->data.mem != NULL))
675 g_free(mimeinfo->data.mem);
676 }
677
678 if (g_stat(tmpfilename, &statbuf) < 0) {
679 FILE_OP_ERROR(tmpfilename, "stat");
680 return FALSE;
681 }
682 mimeinfo->content = MIMECONTENT_FILE;
683 mimeinfo->data.filename = tmpfilename;
684 mimeinfo->tmp = TRUE;
685 mimeinfo->offset = 0;
686 mimeinfo->length = statbuf.st_size;
687 mimeinfo->encoding_type = encoding;
688
689 return TRUE;
690 }
691
692 gint procmime_get_part(const gchar *outfile, MimeInfo *mimeinfo)
693 {
694 FILE *infp, *outfp;
695 gchar buf[BUFFSIZE];
696 gint restlength, readlength;
697 gint saved_errno = 0;
698
699 cm_return_val_if_fail(outfile != NULL, -1);
700 cm_return_val_if_fail(mimeinfo != NULL, -1);
701
702 if (mimeinfo->encoding_type != ENC_BINARY && !procmime_decode_content(mimeinfo))
703 return -EINVAL;
704
705 if ((infp = procmime_fopen(mimeinfo->data.filename, "rb")) == NULL) {
706 saved_errno = errno;
707 FILE_OP_ERROR(mimeinfo->data.filename, "fopen");
708 return -(saved_errno);
709 }
710 if (fseek(infp, mimeinfo->offset, SEEK_SET) < 0) {
711 saved_errno = errno;
712 FILE_OP_ERROR(mimeinfo->data.filename, "fseek");
713 procmime_fclose(infp);
714 return -(saved_errno);
715 }
716 if ((outfp = procmime_fopen(outfile, "wb")) == NULL) {
717 saved_errno = errno;
718 FILE_OP_ERROR(outfile, "fopen");
719 procmime_fclose(infp);
720 return -(saved_errno);
721 }
722
723 restlength = mimeinfo->length;
724
725 while ((restlength > 0) && ((readlength = SC_FREAD(buf, 1, restlength > BUFFSIZE ? BUFFSIZE : restlength, infp)) > 0)) {
726 if (SC_FWRITE(buf, 1, readlength, outfp) != readlength) {
727 saved_errno = errno;
728 procmime_fclose(infp);
729 procmime_fclose(outfp);
730 return -(saved_errno);
731 }
732 restlength -= readlength;
733 }
734
735 procmime_fclose(infp);
736 if (procmime_fclose(outfp) == EOF) {
737 saved_errno = errno;
738 FILE_OP_ERROR(outfile, "fclose");
739 claws_unlink(outfile);
740 return -(saved_errno);
741 }
742
743 return 0;
744 }
745
746 gboolean procmime_scan_text_content(MimeInfo *mimeinfo,
747 gboolean (*scan_callback)(const gchar *str, gpointer cb_data),
748 gpointer cb_data)
749 {
750 FILE *tmpfp;
751 const gchar *src_codeset;
752 gboolean conv_fail = FALSE;
753 gchar buf[BUFFSIZE];
754 gchar *str;
755 gchar *tmpfile;
756 gboolean scan_ret = FALSE;
757
758 cm_return_val_if_fail(mimeinfo != NULL, TRUE);
759 cm_return_val_if_fail(scan_callback != NULL, TRUE);
760
761 if (!procmime_decode_content(mimeinfo))
762 return TRUE;
763
764 tmpfile = procmime_get_tmp_file_name(mimeinfo);
765 if (tmpfile == NULL)
766 return TRUE;
767
768 if (procmime_get_part(tmpfile, mimeinfo) < 0) {
769 g_free(tmpfile);
770 return TRUE;
771 }
772
773 tmpfp = procmime_fopen(tmpfile, "rb");
774 if (tmpfp == NULL) {
775 g_free(tmpfile);
776 return TRUE;
777 }
778
779 src_codeset = forced_charset
780 ? forced_charset :
781 procmime_mimeinfo_get_parameter(mimeinfo, "charset");
782
783 /* use supersets transparently when possible */
784 if (!forced_charset && src_codeset && !strcasecmp(src_codeset, CS_ISO_8859_1))
785 src_codeset = CS_WINDOWS_1252;
786 else if (!forced_charset && src_codeset && !strcasecmp(src_codeset, CS_X_GBK))
787 src_codeset = CS_GB18030;
788 else if (!forced_charset && src_codeset && !strcasecmp(src_codeset, CS_GBK))
789 src_codeset = CS_GB18030;
790 else if (!forced_charset && src_codeset && !strcasecmp(src_codeset, CS_GB2312))
791 src_codeset = CS_GB18030;
792 else if (!forced_charset && src_codeset && !strcasecmp(src_codeset, CS_X_VIET_VPS))
793 src_codeset = CS_WINDOWS_874;
794
795 if (mimeinfo->type == MIMETYPE_TEXT && !g_ascii_strcasecmp(mimeinfo->subtype, "html")) {
796 SC_HTMLParser *parser;
797 CodeConverter *conv;
798
799 conv = conv_code_converter_new(src_codeset);
800 parser = sc_html_parser_new(tmpfp, conv);
801 while ((str = sc_html_parse(parser)) != NULL) {
802 if ((scan_ret = scan_callback(str, cb_data)) == TRUE)
803 break;
804 }
805 sc_html_parser_destroy(parser);
806 conv_code_converter_destroy(conv);
807 } else if (mimeinfo->type == MIMETYPE_TEXT && !g_ascii_strcasecmp(mimeinfo->subtype, "enriched")) {
808 ERTFParser *parser;
809 CodeConverter *conv;
810
811 conv = conv_code_converter_new(src_codeset);
812 parser = ertf_parser_new(tmpfp, conv);
813 while ((str = ertf_parse(parser)) != NULL) {
814 if ((scan_ret = scan_callback(str, cb_data)) == TRUE)
815 break;
816 }
817 ertf_parser_destroy(parser);
818 conv_code_converter_destroy(conv);
819 } else if (mimeinfo->type == MIMETYPE_TEXT) {
820 while (SC_FGETS(buf, sizeof(buf), tmpfp) != NULL) {
821 str = conv_codeset_strdup(buf, src_codeset, CS_UTF_8);
822 if (str) {
823 if ((scan_ret = scan_callback(str, cb_data)) == TRUE) {
824 g_free(str);
825 break;
826 }
827 g_free(str);
828 } else {
829 conv_fail = TRUE;
830 if ((scan_ret = scan_callback(buf, cb_data)) == TRUE)
831 break;
832 }
833 }
834 }
835
836 if (conv_fail)
837 g_warning("procmime_get_text_content(): Code conversion failed.\n");
838
839 procmime_fclose(tmpfp);
840 claws_unlink(tmpfile);
841 g_free(tmpfile);
842
843 return scan_ret;
844 }
845
846 static gboolean scan_fputs_cb(const gchar *str, gpointer fp)
847 {
848 if (SC_FPUTS(str, (FILE *)fp) == EOF)
849 return TRUE;
850
851 return FALSE;
852 }
853
854 FILE *procmime_get_text_content(MimeInfo *mimeinfo)
855 {
856 FILE *outfp;
857 gboolean err;
858
859 if ((outfp = my_tmpfile()) == NULL) {
860 perror("tmpfile");
861 return NULL;
862 }
863 #ifdef HAVE_FGETS_UNLOCKED
864 flockfile(outfp);
865 #endif
866
867 err = procmime_scan_text_content(mimeinfo, scan_fputs_cb, outfp);
868
869 rewind(outfp);
870 if (err == TRUE) {
871 procmime_fclose(outfp);
872 return NULL;
873 }
874 #ifdef HAVE_FGETS_UNLOCKED
875 funlockfile(outfp);
876 #endif
877 return outfp;
878
879 }
880
881 FILE *procmime_get_binary_content(MimeInfo *mimeinfo)
882 {
883 FILE *outfp;
884 gchar *tmpfile;
885
886 cm_return_val_if_fail(mimeinfo != NULL, NULL);
887
888 if (!procmime_decode_content(mimeinfo))
889 return NULL;
890
891 tmpfile = procmime_get_tmp_file_name(mimeinfo);
892 if (tmpfile == NULL)
893 return NULL;
894
895 if (procmime_get_part(tmpfile, mimeinfo) < 0) {
896 g_free(tmpfile);
897 return NULL;
898 }
899
900 outfp = procmime_fopen(tmpfile, "rb");
901 if (outfp == NULL) {
902 g_unlink(tmpfile);
903 g_free(tmpfile);
904 return NULL;
905 }
906
907 g_unlink(tmpfile);
908 g_free(tmpfile);
909
910 #ifdef HAVE_FGETS_UNLOCKED
911 funlockfile(outfp);
912 #endif
913 return outfp;
914 }
915
916 /* search the first text part of (multipart) MIME message,
917 decode, convert it and output to outfp. */
918 FILE *procmime_get_first_text_content(MsgInfo *msginfo)
919 {
920 FILE *outfp = NULL;
921 MimeInfo *mimeinfo, *partinfo;
922 gboolean empty_ok = FALSE, short_scan = TRUE;
923
924 cm_return_val_if_fail(msginfo != NULL, NULL);
925
926 /* first we try to short-scan (for speed), refusing empty parts */
927 scan_again:
928 if (short_scan)
929 mimeinfo = procmime_scan_message_short(msginfo);
930 else
931 mimeinfo = procmime_scan_message(msginfo);
932 if (!mimeinfo) return NULL;
933
934 partinfo = mimeinfo;
935 while (partinfo && (partinfo->type != MIMETYPE_TEXT ||
936 (partinfo->length == 0 && !empty_ok))) {
937 partinfo = procmime_mimeinfo_next(partinfo);
938 }
939 if (partinfo)
940 outfp = procmime_get_text_content(partinfo);
941 else if (!empty_ok && short_scan) {
942 /* if short scan didn't find a non-empty part, rescan
943 * fully for non-empty parts
944 */
945 short_scan = FALSE;
946 procmime_mimeinfo_free_all(mimeinfo);
947 goto scan_again;
948 } else if (!empty_ok && !short_scan) {
949 /* if full scan didn't find a non-empty part, rescan
950 * accepting empty parts
951 */
952 empty_ok = TRUE;
953 procmime_mimeinfo_free_all(mimeinfo);
954 goto scan_again;
955 }
956 procmime_mimeinfo_free_all(mimeinfo);
957
958 /* outfp already unlocked at this time */
959 return outfp;
960 }
961
962
963 static gboolean find_encrypted_func(GNode *node, gpointer data)
964 {
965 MimeInfo *mimeinfo = (MimeInfo *) node->data;
966 MimeInfo **encinfo = (MimeInfo **) data;
967
968 if (privacy_mimeinfo_is_encrypted(mimeinfo)) {
969 *encinfo = mimeinfo;
970 return TRUE;
971 }
972
973 return FALSE;
974 }
975
976 static MimeInfo *find_encrypted_part(MimeInfo *rootinfo)
977 {
978 MimeInfo *encinfo = NULL;
979
980 g_node_traverse(rootinfo->node, G_IN_ORDER, G_TRAVERSE_ALL, -1,
981 find_encrypted_func, &encinfo);
982
983 return encinfo;
984 }
985
986 /* search the first encrypted text part of (multipart) MIME message,
987 decode, convert it and output to outfp. */
988 FILE *procmime_get_first_encrypted_text_content(MsgInfo *msginfo)
989 {
990 FILE *outfp = NULL;
991 MimeInfo *mimeinfo, *partinfo, *encinfo;
992
993 cm_return_val_if_fail(msginfo != NULL, NULL);
994
995 mimeinfo = procmime_scan_message(msginfo);
996 if (!mimeinfo) {
997 return NULL;
998 }
999
1000 partinfo = mimeinfo;
1001 if ((encinfo = find_encrypted_part(partinfo)) != NULL) {
1002 debug_print("decrypting message part\n");
1003 if (privacy_mimeinfo_decrypt(encinfo) < 0) {
1004 alertpanel_error(_("Couldn't decrypt: %s"),
1005 privacy_get_error());
1006 return NULL;
1007 }
1008 }
1009 partinfo = mimeinfo;
1010 while (partinfo && partinfo->type != MIMETYPE_TEXT) {
1011 partinfo = procmime_mimeinfo_next(partinfo);
1012 if (privacy_mimeinfo_is_signed(partinfo))
1013 procmsg_msginfo_set_flags(msginfo, 0, MSG_SIGNED);
1014 }
1015
1016 if (partinfo)
1017 outfp = procmime_get_text_content(partinfo);
1018
1019 procmime_mimeinfo_free_all(mimeinfo);
1020
1021 /* outfp already unlocked at this time */
1022 return outfp;
1023 }
1024
1025 gboolean procmime_msginfo_is_encrypted(MsgInfo *msginfo)
1026 {
1027 MimeInfo *mimeinfo, *partinfo;
1028 gboolean result = FALSE;
1029
1030 cm_return_val_if_fail(msginfo != NULL, FALSE);
1031
1032 mimeinfo = procmime_scan_message(msginfo);
1033 if (!mimeinfo) {
1034 return FALSE;
1035 }
1036
1037 partinfo = mimeinfo;
1038 result = (find_encrypted_part(partinfo) != NULL);
1039 procmime_mimeinfo_free_all(mimeinfo);
1040
1041 return result;
1042 }
1043
1044 gchar *procmime_get_tmp_file_name(MimeInfo *mimeinfo)
1045 {
1046 static guint32 id = 0;
1047 gchar *base;
1048 gchar *filename;
1049 gchar f_prefix[10];
1050
1051 cm_return_val_if_fail(mimeinfo != NULL, NULL);
1052
1053 g_snprintf(f_prefix, sizeof(f_prefix), "%08x.", id++);
1054
1055 if ((mimeinfo->type == MIMETYPE_TEXT) && !g_ascii_strcasecmp(mimeinfo->subtype, "html"))
1056 base = g_strdup("mimetmp.html");
1057 else {
1058 const gchar *basetmp;
1059
1060 basetmp = procmime_mimeinfo_get_parameter(mimeinfo, "filename");
1061 if (basetmp == NULL)
1062 basetmp = procmime_mimeinfo_get_parameter(mimeinfo, "name");
1063 if (basetmp == NULL)
1064 basetmp = "mimetmp";
1065 basetmp = g_path_get_basename(basetmp);
1066 if (*basetmp == '\0')
1067 basetmp = g_strdup("mimetmp");
1068 base = conv_filename_from_utf8(basetmp);
1069 g_free((gchar*)basetmp);
1070 subst_for_shellsafe_filename(base);
1071 }
1072
1073 filename = g_strconcat(get_mime_tmp_dir(), G_DIR_SEPARATOR_S,
1074 f_prefix, base, NULL);
1075
1076 g_free(base);
1077
1078 return filename;
1079 }
1080
1081 static GList *mime_type_list = NULL;
1082
1083 gchar *procmime_get_mime_type(const gchar *filename)
1084 {
1085 const gchar *p;
1086 gchar *ext = NULL;
1087 gchar *base;
1088 #ifndef G_OS_WIN32
1089 static GHashTable *mime_type_table = NULL;
1090 MimeType *mime_type;
1091
1092 if (!mime_type_table) {
1093 mime_type_table = procmime_get_mime_type_table();
1094 if (!mime_type_table) return NULL;
1095 }
1096 #endif
1097
1098 if (filename == NULL)
1099 return NULL;
1100
1101 base = g_path_get_basename(filename);
1102 if ((p = strrchr(base, '.')) != NULL)
1103 ext = g_utf8_strdown(p + 1, -1);
1104 g_free(base);
1105
1106 #ifndef G_OS_WIN32
1107 mime_type = g_hash_table_lookup(mime_type_table, ext);
1108
1109 if (mime_type) {
1110 gchar *str;
1111 str = g_strconcat(mime_type->type, "/", mime_type->sub_type,
1112 NULL);
1113 debug_print("got type %s for %s\n", str, ext);
1114 g_free(ext);
1115 return str;
1116 }
1117 return NULL;
1118 #else
1119 gchar *str = get_content_type_from_registry_with_ext(ext);
1120
1121 g_free(ext);
1122 return str;
1123 #endif
1124 }
1125
1126 static guint procmime_str_hash(gconstpointer gptr)
1127 {
1128 guint hash_result = 0;
1129 const char *str;
1130
1131 for (str = gptr; str && *str; str++) {
1132 if (isupper(*str)) hash_result += (*str + ' ');
1133 else hash_result += *str;
1134 }
1135
1136 return hash_result;
1137 }
1138
1139 static gint procmime_str_equal(gconstpointer gptr1, gconstpointer gptr2)
1140 {
1141 const char *str1 = gptr1;
1142 const char *str2 = gptr2;
1143
1144 return !g_utf8_collate(str1, str2);
1145 }
1146
1147 static GHashTable *procmime_get_mime_type_table(void)
1148 {
1149 GHashTable *table = NULL;
1150 GList *cur;
1151 MimeType *mime_type;
1152 gchar **exts;
1153
1154 if (!mime_type_list) {
1155 mime_type_list = procmime_get_mime_type_list();
1156 if (!mime_type_list) return NULL;
1157 }
1158
1159 table = g_hash_table_new(procmime_str_hash, procmime_str_equal);
1160
1161 for (cur = mime_type_list; cur != NULL; cur = cur->next) {
1162 gint i;
1163 gchar *key;
1164
1165 mime_type = (MimeType *)cur->data;
1166
1167 if (!mime_type->extension) continue;
1168
1169 exts = g_strsplit(mime_type->extension, " ", 16);
1170 for (i = 0; exts[i] != NULL; i++) {
1171 /* Don't overwrite previously inserted extension */
1172 if (!g_hash_table_lookup(table, exts[i])) {
1173 key = g_strdup(exts[i]);
1174 g_hash_table_insert(table, key, mime_type);
1175 }
1176 }
1177 g_strfreev(exts);
1178 }
1179
1180 return table;
1181 }
1182
1183 GList *procmime_get_mime_type_list(void)
1184 {
1185 GList *list = NULL;
1186 FILE *fp;
1187 gchar buf[BUFFSIZE];
1188 gchar *p;
1189 gchar *delim;
1190 MimeType *mime_type;
1191 gboolean fp_is_glob_file = TRUE;
1192
1193 if (mime_type_list)
1194 return mime_type_list;
1195
1196 #if defined(__NetBSD__) || defined(__OpenBSD__) || defined(__FreeBSD__)
1197 if ((fp = procmime_fopen(DATAROOTDIR "/mime/globs", "rb")) == NULL)
1198 #else
1199 if ((fp = procmime_fopen("/usr/share/mime/globs", "rb")) == NULL)
1200 #endif
1201 {
1202 fp_is_glob_file = FALSE;
1203 if ((fp = procmime_fopen("/etc/mime.types", "rb")) == NULL) {
1204 if ((fp = procmime_fopen(SYSCONFDIR "/mime.types", "rb"))
1205 == NULL) {
1206 FILE_OP_ERROR(SYSCONFDIR "/mime.types",
1207 "fopen");
1208 return NULL;
1209 }
1210 }
1211 }
1212
1213 while (SC_FGETS(buf, sizeof(buf), fp) != NULL) {
1214 p = strchr(buf, '#');
1215 if (p) *p = '\0';
1216 g_strstrip(buf);
1217
1218 p = buf;
1219
1220 if (fp_is_glob_file) {
1221 while (*p && !g_ascii_isspace(*p) && (*p!=':')) p++;
1222 } else {
1223 while (*p && !g_ascii_isspace(*p)) p++;
1224 }
1225
1226 if (*p) {
1227 *p = '\0';
1228 p++;
1229 }
1230 delim = strchr(buf, '/');
1231 if (delim == NULL) continue;
1232 *delim = '\0';
1233
1234 mime_type = g_new(MimeType, 1);
1235 mime_type->type = g_strdup(buf);
1236 mime_type->sub_type = g_strdup(delim + 1);
1237
1238 if (fp_is_glob_file) {
1239 while (*p && (g_ascii_isspace(*p)||(*p=='*')||(*p=='.'))) p++;
1240 } else {
1241 while (*p && g_ascii_isspace(*p)) p++;
1242 }
1243
1244 if (*p)
1245 mime_type->extension = g_utf8_strdown(p, -1);
1246 else
1247 mime_type->extension = NULL;
1248
1249 list = g_list_append(list, mime_type);
1250 }
1251
1252 procmime_fclose(fp);
1253
1254 if (!list)
1255 g_warning("Can't read mime.types\n");
1256
1257 return list;
1258 }
1259
1260 EncodingType procmime_get_encoding_for_charset(const gchar *charset)
1261 {
1262 if (!charset)
1263 return ENC_8BIT;
1264 else if (!g_ascii_strncasecmp(charset, "ISO-2022-", 9) ||
1265 !g_ascii_strcasecmp(charset, "US-ASCII"))
1266 return ENC_7BIT;
1267 else if (!g_ascii_strcasecmp(charset, "ISO-8859-5") ||
1268 !g_ascii_strncasecmp(charset, "KOI8-", 5) ||
1269 !g_ascii_strcasecmp(charset, "Windows-1251"))
1270 return ENC_8BIT;
1271 else if (!g_ascii_strncasecmp(charset, "ISO-8859-", 9))
1272 return ENC_QUOTED_PRINTABLE;
1273 else if (!g_ascii_strncasecmp(charset, "UTF-8", 5))
1274 return ENC_QUOTED_PRINTABLE;
1275 else
1276 return ENC_8BIT;
1277 }
1278
1279 EncodingType procmime_get_encoding_for_text_file(const gchar *file, gboolean *has_binary)
1280 {
1281 FILE *fp;
1282 guchar buf[BUFFSIZE];
1283 size_t len;
1284 size_t octet_chars = 0;
1285 size_t total_len = 0;
1286 gfloat octet_percentage;
1287 gboolean force_b64 = FALSE;
1288
1289 if ((fp = procmime_fopen(file, "rb")) == NULL) {
1290 FILE_OP_ERROR(file, "fopen");
1291 return ENC_UNKNOWN;
1292 }
1293
1294 while ((len = SC_FREAD(buf, sizeof(guchar), sizeof(buf), fp)) > 0) {
1295 guchar *p;
1296 gint i;
1297
1298 for (p = buf, i = 0; i < len; ++p, ++i) {
1299 if (*p & 0x80)
1300 ++octet_chars;
1301 if (*p == '\0') {
1302 force_b64 = TRUE;
1303 *has_binary = TRUE;
1304 }
1305 }
1306 total_len += len;
1307 }
1308
1309 procmime_fclose(fp);
1310
1311 if (total_len > 0)
1312 octet_percentage = (gfloat)octet_chars / (gfloat)total_len;
1313 else
1314 octet_percentage = 0.0;
1315
1316 debug_print("procmime_get_encoding_for_text_file(): "
1317 "8bit chars: %zd / %zd (%f%%)\n", octet_chars, total_len,
1318 100.0 * octet_percentage);
1319
1320 if (octet_percentage > 0.20 || force_b64) {
1321 debug_print("using BASE64\n");
1322 return ENC_BASE64;
1323 } else if (octet_chars > 0) {
1324 debug_print("using quoted-printable\n");
1325 return ENC_QUOTED_PRINTABLE;
1326 } else {
1327 debug_print("using 7bit\n");
1328 return ENC_7BIT;
1329 }
1330 }
1331
1332 struct EncodingTable
1333 {
1334 gchar *str;
1335 EncodingType enc_type;
1336 };
1337
1338 struct EncodingTable encoding_table[] = {
1339 {"7bit", ENC_7BIT},
1340 {"8bit", ENC_8BIT},
1341 {"binary", ENC_BINARY},
1342 {"quoted-printable", ENC_QUOTED_PRINTABLE},
1343 {"base64", ENC_BASE64},
1344 {"x-uuencode", ENC_UNKNOWN},
1345 {NULL, ENC_UNKNOWN},
1346 };
1347
1348 const gchar *procmime_get_encoding_str(EncodingType encoding)
1349 {
1350 struct EncodingTable *enc_table;
1351
1352 for (enc_table = encoding_table; enc_table->str != NULL; enc_table++) {
1353 if (enc_table->enc_type == encoding)
1354 return enc_table->str;
1355 }
1356 return NULL;
1357 }
1358
1359 /* --- NEW MIME STUFF --- */
1360 struct TypeTable
1361 {
1362 gchar *str;
1363 MimeMediaType type;
1364 };
1365
1366 static struct TypeTable mime_type_table[] = {
1367 {"text", MIMETYPE_TEXT},
1368 {"image", MIMETYPE_IMAGE},
1369 {"audio", MIMETYPE_AUDIO},
1370 {"video", MIMETYPE_VIDEO},
1371 {"application", MIMETYPE_APPLICATION},
1372 {"message", MIMETYPE_MESSAGE},
1373 {"multipart", MIMETYPE_MULTIPART},
1374 {NULL, 0},
1375 };
1376
1377 const gchar *procmime_get_media_type_str(MimeMediaType type)
1378 {
1379 struct TypeTable *type_table;
1380
1381 for (type_table = mime_type_table; type_table->str != NULL; type_table++) {
1382 if (type_table->type == type)
1383 return type_table->str;
1384 }
1385 return NULL;
1386 }
1387
1388 MimeMediaType procmime_get_media_type(const gchar *str)
1389 {
1390 struct TypeTable *typetablearray;
1391
1392 for (typetablearray = mime_type_table; typetablearray->str != NULL; typetablearray++)
1393 if (g_ascii_strncasecmp(str, typetablearray->str, strlen(typetablearray->str)) == 0)
1394 return typetablearray->type;
1395
1396 return MIMETYPE_UNKNOWN;
1397 }
1398
1399 /*!
1400 *\brief Safe wrapper for content type string.
1401 *
1402 *\return const gchar * Pointer to content type string.
1403 */
1404 gchar *procmime_get_content_type_str(MimeMediaType type,
1405 const char *subtype)
1406 {
1407 const gchar *type_str = NULL;
1408
1409 if (subtype == NULL || !(type_str = procmime_get_media_type_str(type)))
1410 return g_strdup("unknown");
1411 return g_strdup_printf("%s/%s", type_str, subtype);
1412 }
1413
1414 static int procmime_parse_mimepart(MimeInfo *parent,
1415 gchar *content_type,
1416 gchar *content_encoding,
1417 gchar *content_description,
1418 gchar *content_id,
1419 gchar *content_disposition,
1420 gchar *content_location,
1421 const gchar *original_msgid,
1422 const gchar *disposition_notification_hdr,
1423 const gchar *filename,
1424 guint offset,
1425 guint length,
1426 gboolean short_scan);
1427
1428 static void procmime_parse_message_rfc822(MimeInfo *mimeinfo, gboolean short_scan)
1429 {
1430 HeaderEntry hentry[] = {{"Content-Type:", NULL, TRUE},
1431 {"Content-Transfer-Encoding:",
1432 NULL, FALSE},
1433 {"Content-Description:",
1434 NULL, TRUE},
1435 {"Content-ID:",
1436 NULL, TRUE},
1437 {"Content-Disposition:",
1438 NULL, TRUE},
1439 {"Content-Location:",
1440 NULL, TRUE},
1441 {"MIME-Version:",
1442 NULL, TRUE},
1443 {"Original-Message-ID:",
1444 NULL, TRUE},
1445 {"Disposition:",
1446 NULL, TRUE},
1447 {NULL, NULL, FALSE}};
1448 guint content_start, i;
1449 FILE *fp;
1450 gchar *tmp;
1451 gint len = 0;
1452
1453 procmime_decode_content(mimeinfo);
1454
1455 fp = procmime_fopen(mimeinfo->data.filename, "rb");
1456 if (fp == NULL) {
1457 FILE_OP_ERROR(mimeinfo->data.filename, "fopen");
1458 return;
1459 }
1460 if (fseek(fp, mimeinfo->offset, SEEK_SET) < 0) {
1461 FILE_OP_ERROR(mimeinfo->data.filename, "fseek");
1462 procmime_fclose(fp);
1463 return;
1464 }
1465 procheader_get_header_fields(fp, hentry);
1466 if (hentry[0].body != NULL) {
1467 tmp = conv_unmime_header(hentry[0].body, NULL, FALSE);
1468 g_free(hentry[0].body);
1469 hentry[0].body = tmp;
1470 }
1471 if (hentry[2].body != NULL) {
1472 tmp = conv_unmime_header(hentry[2].body, NULL, FALSE);
1473 g_free(hentry[2].body);
1474 hentry[2].body = tmp;
1475 }
1476 if (hentry[4].body != NULL) {
1477 tmp = conv_unmime_header(hentry[4].body, NULL, FALSE);
1478 g_free(hentry[4].body);
1479 hentry[4].body = tmp;
1480 }
1481 if (hentry[5].body != NULL) {
1482 tmp = conv_unmime_header(hentry[5].body, NULL, FALSE);
1483 g_free(hentry[5].body);
1484 hentry[5].body = tmp;
1485 }
1486 if (hentry[7].body != NULL) {
1487 tmp = conv_unmime_header(hentry[7].body, NULL, FALSE);
1488 g_free(hentry[7].body);
1489 hentry[7].body = tmp;
1490 }
1491 if (hentry[8].body != NULL) {
1492 tmp = conv_unmime_header(hentry[8].body, NULL, FALSE);
1493 g_free(hentry[8].body);
1494 hentry[8].body = tmp;
1495 }
1496
1497 content_start = ftell(fp);
1498 procmime_fclose(fp);
1499
1500 len = mimeinfo->length - (content_start - mimeinfo->offset);
1501 if (len < 0)
1502 len = 0;
1503 procmime_parse_mimepart(mimeinfo,
1504 hentry[0].body, hentry[1].body,
1505 hentry[2].body, hentry[3].body,
1506 hentry[4].body, hentry[5].body,
1507 hentry[7].body, hentry[8].body,
1508 mimeinfo->data.filename, content_start,
1509 len, short_scan);
1510
1511 for (i = 0; i < (sizeof hentry / sizeof hentry[0]); i++) {
1512 g_free(hentry[i].body);
1513 hentry[i].body = NULL;
1514 }
1515 }
1516
1517 static void procmime_parse_disposition_notification(MimeInfo *mimeinfo,
1518 const gchar *original_msgid, const gchar *disposition_notification_hdr,
1519 gboolean short_scan)
1520 {
1521 HeaderEntry hentry[] = {{"Original-Message-ID:", NULL, TRUE},
1522 {"Disposition:", NULL, TRUE},
1523 {NULL, NULL, FALSE}};
1524 guint i;
1525 FILE *fp;
1526 gchar *orig_msg_id = NULL;
1527 gchar *disp = NULL;
1528
1529 procmime_decode_content(mimeinfo);
1530
1531 debug_print("parse disposition notification\n");
1532 fp = procmime_fopen(mimeinfo->data.filename, "rb");
1533 if (fp == NULL) {
1534 FILE_OP_ERROR(mimeinfo->data.filename, "fopen");
1535 return;
1536 }
1537 if (fseek(fp, mimeinfo->offset, SEEK_SET) < 0) {
1538 FILE_OP_ERROR(mimeinfo->data.filename, "fseek");
1539 procmime_fclose(fp);
1540 return;
1541 }
1542
1543 if (original_msgid && disposition_notification_hdr) {
1544 hentry[0].body = g_strdup(original_msgid);
1545 hentry[1].body = g_strdup(disposition_notification_hdr);
1546 } else {
1547 procheader_get_header_fields(fp, hentry);
1548 }
1549
1550 procmime_fclose(fp);
1551
1552 if (!hentry[0].body || !hentry[1].body) {
1553 debug_print("MsgId %s, Disp %s\n",
1554 hentry[0].body ? hentry[0].body:"(nil)",
1555 hentry[1].body ? hentry[1].body:"(nil)");
1556 goto bail;
1557 }
1558
1559 orig_msg_id = g_strdup(hentry[0].body);
1560 disp = g_strdup(hentry[1].body);
1561
1562 extract_parenthesis(orig_msg_id, '<', '>');
1563 remove_space(orig_msg_id);
1564
1565 if (strstr(disp, "displayed")) {
1566 /* find sent message, if possible */
1567 MsgInfo *info = NULL;
1568 GList *flist;
1569 debug_print("%s has been displayed.\n", orig_msg_id);
1570 for (flist = folder_get_list(); flist != NULL; flist = g_list_next(flist)) {
1571 FolderItem *outbox = ((Folder *)(flist->data))->outbox;
1572 if (!outbox) {
1573 debug_print("skipping folder with no outbox...\n");
1574 continue;
1575 }
1576 info = folder_item_get_msginfo_by_msgid(outbox, orig_msg_id);
1577 debug_print("%s %s in %s\n", info?"found":"didn't find", orig_msg_id, outbox->path);
1578 if (info) {
1579 procmsg_msginfo_set_flags(info, MSG_RETRCPT_GOT, 0);
1580 procmsg_msginfo_free(info);
1581 }
1582 }
1583 }
1584 g_free(orig_msg_id);
1585 g_free(disp);
1586 bail:
1587 for (i = 0; i < (sizeof hentry / sizeof hentry[0]); i++) {
1588 g_free(hentry[i].body);
1589 hentry[i].body = NULL;
1590 }
1591 }
1592
1593 #define GET_HEADERS() { \
1594 procheader_get_header_fields(fp, hentry); \
1595 if (hentry[0].body != NULL) { \
1596 tmp = conv_unmime_header(hentry[0].body, NULL, FALSE); \
1597 g_free(hentry[0].body); \
1598 hentry[0].body = tmp; \
1599 } \
1600 if (hentry[2].body != NULL) { \
1601 tmp = conv_unmime_header(hentry[2].body, NULL, FALSE); \
1602 g_free(hentry[2].body); \
1603 hentry[2].body = tmp; \
1604 } \
1605 if (hentry[4].body != NULL) { \
1606 tmp = conv_unmime_header(hentry[4].body, NULL, FALSE); \
1607 g_free(hentry[4].body); \
1608 hentry[4].body = tmp; \
1609 } \
1610 if (hentry[5].body != NULL) { \
1611 tmp = conv_unmime_header(hentry[5].body, NULL, FALSE); \
1612 g_free(hentry[5].body); \
1613 hentry[5].body = tmp; \
1614 } \
1615 if (hentry[6].body != NULL) { \
1616 tmp = conv_unmime_header(hentry[6].body, NULL, FALSE); \
1617 g_free(hentry[6].body); \
1618 hentry[6].body = tmp; \
1619 } \
1620 if (hentry[7].body != NULL) { \
1621 tmp = conv_unmime_header(hentry[7].body, NULL, FALSE); \
1622 g_free(hentry[7].body); \
1623 hentry[7].body = tmp; \
1624 } \
1625 }
1626
1627 static void procmime_parse_multipart(MimeInfo *mimeinfo, gboolean short_scan)
1628 {
1629 HeaderEntry hentry[] = {{"Content-Type:", NULL, TRUE},
1630 {"Content-Transfer-Encoding:",
1631 NULL, FALSE},
1632 {"Content-Description:",
1633 NULL, TRUE},
1634 {"Content-ID:",
1635 NULL, TRUE},
1636 {"Content-Disposition:",
1637 NULL, TRUE},
1638 {"Content-Location:",
1639 NULL, TRUE},
1640 {"Original-Message-ID:",
1641 NULL, TRUE},
1642 {"Disposition:",
1643 NULL, TRUE},
1644 {NULL, NULL, FALSE}};
1645 gchar *tmp;
1646 gchar *boundary;
1647 gint boundary_len = 0, lastoffset = -1, i;
1648 gchar buf[BUFFSIZE];
1649 FILE *fp;
1650 int result = 0;
1651 gboolean start_found = FALSE;
1652 gboolean end_found = FALSE;
1653
1654 boundary = g_hash_table_lookup(mimeinfo->typeparameters, "boundary");
1655 if (!boundary)
1656 return;
1657 boundary_len = strlen(boundary);
1658
1659 procmime_decode_content(mimeinfo);
1660
1661 fp = procmime_fopen(mimeinfo->data.filename, "rb");
1662 if (fp == NULL) {
1663 FILE_OP_ERROR(mimeinfo->data.filename, "fopen");
1664 return;
1665 }
1666
1667 if (fseek(fp, mimeinfo->offset, SEEK_SET) < 0) {
1668 FILE_OP_ERROR(mimeinfo->data.filename, "fseek");
1669 procmime_fclose(fp);
1670 return;
1671 }
1672
1673 while (SC_FGETS(buf, sizeof(buf), fp) != NULL && result == 0) {
1674 if (ftell(fp) - 1 > (mimeinfo->offset + mimeinfo->length))
1675 break;
1676
1677 if (IS_BOUNDARY(buf, boundary, boundary_len)) {
1678 start_found = TRUE;
1679
1680 if (lastoffset != -1) {
1681 gint len = (ftell(fp) - strlen(buf)) - lastoffset - 1;
1682 if (len < 0)
1683 len = 0;
1684 result = procmime_parse_mimepart(mimeinfo,
1685 hentry[0].body, hentry[1].body,
1686 hentry[2].body, hentry[3].body,
1687 hentry[4].body, hentry[5].body,
1688 hentry[6].body, hentry[7].body,
1689 mimeinfo->data.filename, lastoffset,
1690 len, short_scan);
1691 if (result == 1 && short_scan)
1692 break;
1693
1694 }
1695
1696 if (buf[2 + boundary_len] == '-' &&
1697 buf[2 + boundary_len + 1] == '-') {
1698 end_found = TRUE;
1699 break;
1700 }
1701 for (i = 0; i < (sizeof hentry / sizeof hentry[0]) ; i++) {
1702 g_free(hentry[i].body);
1703 hentry[i].body = NULL;
1704 }
1705 GET_HEADERS();
1706 lastoffset = ftell(fp);
1707 }
1708 }
1709
1710 if (start_found && !end_found && lastoffset != -1) {
1711 gint len = (ftell(fp) - strlen(buf)) - lastoffset - 1;
1712
1713 if (len >= 0) {
1714 result = procmime_parse_mimepart(mimeinfo,
1715 hentry[0].body, hentry[1].body,
1716 hentry[2].body, hentry[3].body,
1717 hentry[4].body, hentry[5].body,
1718 hentry[6].body, hentry[7].body,
1719 mimeinfo->data.filename, lastoffset,
1720 len, short_scan);
1721 }
1722 mimeinfo->broken = TRUE;
1723 }
1724
1725 for (i = 0; i < (sizeof hentry / sizeof hentry[0]); i++) {
1726 g_free(hentry[i].body);
1727 hentry[i].body = NULL;
1728 }
1729 procmime_fclose(fp);
1730 }
1731
1732 static void parse_parameters(const gchar *parameters, GHashTable *table)
1733 {
1734 gchar *params, *param, *next;
1735 GSList *convlist = NULL, *concatlist = NULL, *cur;
1736
1737 params = g_strdup(parameters);
1738 param = params;
1739 next = params;
1740 for (; next != NULL; param = next) {
1741 gchar *attribute, *value, *tmp, *down_attr, *orig_down_attr;
1742 gint len;
1743 gboolean convert = FALSE;
1744
1745 next = strchr_with_skip_quote(param, '"', ';');
1746 if (next != NULL) {
1747 next[0] = '\0';
1748 next++;
1749 }
1750
1751 g_strstrip(param);
1752
1753 attribute = param;
1754 value = strchr(attribute, '=');
1755 if (value == NULL)
1756 continue;
1757
1758 value[0] = '\0';
1759 value++;
1760 while (value[0] != '\0' && value[0] == ' ')
1761 value++;
1762
1763 down_attr = g_utf8_strdown(attribute, -1);
1764 orig_down_attr = down_attr;
1765
1766 len = down_attr ? strlen(down_attr):0;
1767 if (len > 0 && down_attr[len - 1] == '*') {
1768 gchar *srcpos, *dstpos, *endpos;
1769
1770 convert = TRUE;
1771 down_attr[len - 1] = '\0';
1772
1773 srcpos = value;
1774 dstpos = value;
1775 endpos = value + strlen(value);
1776 while (srcpos < endpos) {
1777 if (*srcpos != '%')
1778 *dstpos = *srcpos;
1779 else {
1780 guchar dstvalue;
1781
1782 if (!get_hex_value(&dstvalue, srcpos[1], srcpos[2]))
1783 *dstpos = '?';
1784 else
1785 *dstpos = dstvalue;
1786 srcpos += 2;
1787 }
1788 srcpos++;
1789 dstpos++;
1790 }
1791 *dstpos = '\0';
1792 if (value[0] == '"')
1793 extract_quote(value, '"');
1794 } else {
1795 if (value[0] == '"')
1796 extract_quote(value, '"');
1797 else if ((tmp = strchr(value, ' ')) != NULL)
1798 *tmp = '\0';
1799 }
1800
1801 if (down_attr) {
1802 while (down_attr[0] == ' ')
1803 down_attr++;
1804 while (down_attr[strlen(down_attr)-1] == ' ')
1805 down_attr[strlen(down_attr)-1] = '\0';
1806 }
1807
1808 while (value[0] != '\0' && value[0] == ' ')
1809 value++;
1810 while (value[strlen(value)-1] == ' ')
1811 value[strlen(value)-1] = '\0';
1812
1813 if (down_attr && strrchr(down_attr, '*') != NULL) {
1814 gchar *tmpattr;
1815
1816 tmpattr = g_strdup(down_attr);
1817 tmp = strrchr(tmpattr, '*');
1818 tmp[0] = '\0';
1819
1820 if ((tmp[1] == '0') && (tmp[2] == '\0') &&
1821 (g_slist_find_custom(concatlist, down_attr, (GCompareFunc)g_strcmp0) == NULL))
1822 concatlist = g_slist_prepend(concatlist, g_strdup(tmpattr));
1823
1824 if (convert && (g_slist_find_custom(convlist, tmpattr, (GCompareFunc)g_strcmp0) == NULL))
1825 convlist = g_slist_prepend(convlist, g_strdup(tmpattr));
1826
1827 g_free(tmpattr);
1828 } else if (convert) {
1829 if (g_slist_find_custom(convlist, down_attr, (GCompareFunc)g_strcmp0) == NULL)
1830 convlist = g_slist_prepend(convlist, g_strdup(down_attr));
1831 }
1832
1833 if (g_hash_table_lookup(table, down_attr) == NULL)
1834 g_hash_table_insert(table, g_strdup(down_attr), g_strdup(value));
1835 g_free(orig_down_attr);
1836 }
1837
1838 for (cur = concatlist; cur != NULL; cur = g_slist_next(cur)) {
1839 gchar *attribute, *attrwnum, *partvalue;
1840 gint n = 0;
1841 GString *value;
1842
1843 attribute = (gchar *) cur->data;
1844 value = g_string_sized_new(64);
1845
1846 attrwnum = g_strdup_printf("%s*%d", attribute, n);
1847 while ((partvalue = g_hash_table_lookup(table, attrwnum)) != NULL) {
1848 g_string_append(value, partvalue);
1849
1850 g_hash_table_remove(table, attrwnum);
1851 g_free(attrwnum);
1852 n++;
1853 attrwnum = g_strdup_printf("%s*%d", attribute, n);
1854 }
1855 g_free(attrwnum);
1856
1857 g_hash_table_insert(table, g_strdup(attribute), g_strdup(value->str));
1858 g_string_free(value, TRUE);
1859 }
1860 slist_free_strings_full(concatlist);
1861
1862 for (cur = convlist; cur != NULL; cur = g_slist_next(cur)) {
1863 gchar *attribute, *key, *value;
1864 gchar *charset, *lang, *oldvalue, *newvalue;
1865
1866 attribute = (gchar *) cur->data;
1867 if (!g_hash_table_lookup_extended(
1868 table, attribute, (gpointer *)(gchar *) &key, (gpointer *)(gchar *) &value))
1869 continue;
1870
1871 charset = value;
1872 if (charset == NULL)
1873 continue;
1874 lang = strchr(charset, '\'');
1875 if (lang == NULL)
1876 continue;
1877 lang[0] = '\0';
1878 lang++;
1879 oldvalue = strchr(lang, '\'');
1880 if (oldvalue == NULL)
1881 continue;
1882 oldvalue[0] = '\0';
1883 oldvalue++;
1884
1885 newvalue = conv_codeset_strdup(oldvalue, charset, CS_UTF_8);
1886
1887 g_hash_table_remove(table, attribute);
1888 g_free(key);
1889 g_free(value);
1890
1891 g_hash_table_insert(table, g_strdup(attribute), newvalue);
1892 }
1893 slist_free_strings_full(convlist);
1894
1895 g_free(params);
1896 }
1897
1898 static void procmime_parse_content_type(const gchar *content_type, MimeInfo *mimeinfo)
1899 {
1900 cm_return_if_fail(content_type != NULL);
1901 cm_return_if_fail(mimeinfo != NULL);
1902
1903 /* RFC 2045, page 13 says that the mime subtype is MANDATORY;
1904 * if it's not available we use the default Content-Type */
1905 if ((content_type[0] == '\0') || (strchr(content_type, '/') == NULL)) {
1906 mimeinfo->type = MIMETYPE_TEXT;
1907 mimeinfo->subtype = g_strdup("plain");
1908 if (g_hash_table_lookup(mimeinfo->typeparameters,
1909 "charset") == NULL) {
1910 g_hash_table_insert(mimeinfo->typeparameters,
1911 g_strdup("charset"),
1912 g_strdup(
1913 conv_get_locale_charset_str_no_utf8()));
1914 }
1915 } else {
1916 gchar *type, *subtype, *params;
1917
1918 type = g_strdup(content_type);
1919 subtype = strchr(type, '/') + 1;
1920 *(subtype - 1) = '\0';
1921 if ((params = strchr(subtype, ';')) != NULL) {
1922 params[0] = '\0';
1923 params++;
1924 }
1925
1926 mimeinfo->type = procmime_get_media_type(type);
1927 mimeinfo->subtype = g_strstrip(g_strdup(subtype));
1928
1929 /* Get mimeinfo->typeparameters */
1930 if (params != NULL)
1931 parse_parameters(params, mimeinfo->typeparameters);
1932
1933 g_free(type);
1934 }
1935 }
1936
1937 static void procmime_parse_content_disposition(const gchar *content_disposition, MimeInfo *mimeinfo)
1938 {
1939 gchar *tmp, *params;
1940
1941 cm_return_if_fail(content_disposition != NULL);
1942 cm_return_if_fail(mimeinfo != NULL);
1943
1944 tmp = g_strdup(content_disposition);
1945 if ((params = strchr(tmp, ';')) != NULL) {
1946 params[0] = '\0';
1947 params++;
1948 }
1949 g_strstrip(tmp);
1950
1951 if (!g_ascii_strcasecmp(tmp, "inline"))
1952 mimeinfo->disposition = DISPOSITIONTYPE_INLINE;
1953 else if (!g_ascii_strcasecmp(tmp, "attachment"))
1954 mimeinfo->disposition = DISPOSITIONTYPE_ATTACHMENT;
1955 else
1956 mimeinfo->disposition = DISPOSITIONTYPE_ATTACHMENT;
1957
1958 if (params != NULL)
1959 parse_parameters(params, mimeinfo->dispositionparameters);
1960
1961 g_free(tmp);
1962 }
1963
1964
1965 static void procmime_parse_content_encoding(const gchar *content_encoding, MimeInfo *mimeinfo)
1966 {
1967 struct EncodingTable *enc_table;
1968
1969 for (enc_table = encoding_table; enc_table->str != NULL; enc_table++) {
1970 if (g_ascii_strcasecmp(enc_table->str, content_encoding) == 0) {
1971 mimeinfo->encoding_type = enc_table->enc_type;
1972 return;
1973 }
1974 }
1975 mimeinfo->encoding_type = ENC_UNKNOWN;
1976 return;
1977 }
1978
1979 static GSList *registered_parsers = NULL;
1980
1981 static MimeParser *procmime_get_mimeparser_for_type(MimeMediaType type, const gchar *sub_type)
1982 {
1983 GSList *cur;
1984 for (cur = registered_parsers; cur; cur = cur->next) {
1985 MimeParser *parser = (MimeParser *)cur->data;
1986 if (parser->type == type && !strcmp2(parser->sub_type, sub_type))
1987 return parser;
1988 }
1989 return NULL;
1990 }
1991
1992 void procmime_mimeparser_register(MimeParser *parser)
1993 {
1994 if (!procmime_get_mimeparser_for_type(parser->type, parser->sub_type))
1995 registered_parsers = g_slist_append(registered_parsers, parser);
1996 }
1997
1998
1999 void procmime_mimeparser_unregister(MimeParser *parser)
2000 {
2001 registered_parsers = g_slist_remove(registered_parsers, parser);
2002 }
2003
2004 static gboolean procmime_mimeparser_parse(MimeParser *parser, MimeInfo *mimeinfo)
2005 {
2006 cm_return_val_if_fail(parser->parse != NULL, FALSE);
2007 return parser->parse(parser, mimeinfo);
2008 }
2009
2010 static int procmime_parse_mimepart(MimeInfo *parent,
2011 gchar *content_type,
2012 gchar *content_encoding,
2013 gchar *content_description,
2014 gchar *content_id,
2015 gchar *content_disposition,
2016 gchar *content_location,
2017 const gchar *original_msgid,
2018 const gchar *disposition_notification_hdr,
2019 const gchar *filename,
2020 guint offset,
2021 guint length,
2022 gboolean short_scan)
2023 {
2024 MimeInfo *mimeinfo;
2025 MimeParser *parser = NULL;
2026 gboolean parsed = FALSE;
2027 int result = 0;
2028
2029 /* Create MimeInfo */
2030 mimeinfo = procmime_mimeinfo_new();
2031 mimeinfo->content = MIMECONTENT_FILE;
2032
2033 if (parent != NULL) {
2034 if (g_node_depth(parent->node) > 32) {
2035 /* 32 is an arbitrary value
2036 * this avoids DOSsing ourselves
2037 * with enormous messages
2038 */
2039 procmime_mimeinfo_free_all(mimeinfo);
2040 return -1;
2041 }
2042 g_node_append(parent->node, mimeinfo->node);
2043 }
2044 mimeinfo->data.filename = g_strdup(filename);
2045 mimeinfo->offset = offset;
2046 mimeinfo->length = length;
2047
2048 if (content_type != NULL) {
2049 g_strchomp(content_type);
2050 procmime_parse_content_type(content_type, mimeinfo);
2051 } else {
2052 mimeinfo->type = MIMETYPE_TEXT;
2053 mimeinfo->subtype = g_strdup("plain");
2054 if (g_hash_table_lookup(mimeinfo->typeparameters,
2055 "charset") == NULL) {
2056 g_hash_table_insert(mimeinfo->typeparameters,
2057 g_strdup("charset"),
2058 g_strdup(
2059 conv_get_locale_charset_str_no_utf8()));
2060 }
2061 }
2062
2063 if (content_encoding != NULL) {
2064 g_strchomp(content_encoding);
2065 procmime_parse_content_encoding(content_encoding, mimeinfo);
2066 } else {
2067 mimeinfo->encoding_type = ENC_UNKNOWN;
2068 }
2069
2070 if (content_description != NULL)
2071 mimeinfo->description = g_strdup(content_description);
2072 else
2073 mimeinfo->description = NULL;
2074
2075 if (content_id != NULL)
2076 mimeinfo->id = g_strdup(content_id);
2077 else
2078 mimeinfo->id = NULL;
2079
2080 if (content_location != NULL)
2081 mimeinfo->location = g_strdup(content_location);
2082 else
2083 mimeinfo->location = NULL;
2084
2085 if (content_disposition != NULL) {
2086 g_strchomp(content_disposition);
2087 procmime_parse_content_disposition(content_disposition, mimeinfo);
2088 } else
2089 mimeinfo->disposition = DISPOSITIONTYPE_UNKNOWN;
2090
2091 /* Call parser for mime type */
2092 if ((parser = procmime_get_mimeparser_for_type(mimeinfo->type, mimeinfo->subtype)) != NULL) {
2093 parsed = procmime_mimeparser_parse(parser, mimeinfo);
2094 }
2095 if (!parsed) {
2096 switch (mimeinfo->type) {
2097 case MIMETYPE_TEXT:
2098 if (g_ascii_strcasecmp(mimeinfo->subtype, "plain") == 0 && short_scan) {
2099 return 1;
2100 }
2101 break;
2102
2103 case MIMETYPE_MESSAGE:
2104 if (g_ascii_strcasecmp(mimeinfo->subtype, "rfc822") == 0) {
2105 procmime_parse_message_rfc822(mimeinfo, short_scan);
2106 }
2107 if (g_ascii_strcasecmp(mimeinfo->subtype, "disposition-notification") == 0) {
2108 procmime_parse_disposition_notification(mimeinfo,
2109 original_msgid, disposition_notification_hdr, short_scan);
2110 }
2111 break;
2112
2113 case MIMETYPE_MULTIPART:
2114 procmime_parse_multipart(mimeinfo, short_scan);
2115 break;
2116
2117 case MIMETYPE_APPLICATION:
2118 if (g_ascii_strcasecmp(mimeinfo->subtype, "octet-stream") == 0
2119 && original_msgid && *original_msgid
2120 && disposition_notification_hdr && *disposition_notification_hdr) {
2121 procmime_parse_disposition_notification(mimeinfo,
2122 original_msgid, disposition_notification_hdr, short_scan);
2123 }
2124 break;
2125 default:
2126 break;
2127 }
2128 }
2129
2130 return result;
2131 }
2132
2133 static gchar *typenames[] = {
2134 "text",
2135 "image",
2136 "audio",
2137 "video",
2138 "application",
2139 "message",
2140 "multipart",
2141 "unknown",
2142 };
2143
2144 static gboolean output_func(GNode *node, gpointer data)
2145 {
2146 guint i, depth;
2147 MimeInfo *mimeinfo = (MimeInfo *) node->data;
2148
2149 depth = g_node_depth(node);
2150 for (i = 0; i < depth; i++)
2151 g_print(" ");
2152 g_print("%s/%s (offset:%d length:%d encoding: %d)\n", typenames[mimeinfo->type], mimeinfo->subtype, mimeinfo->offset, mimeinfo->length, mimeinfo->encoding_type);
2153
2154 return FALSE;
2155 }
2156
2157 static void output_mime_structure(MimeInfo *mimeinfo, int indent)
2158 {
2159 g_node_traverse(mimeinfo->node, G_PRE_ORDER, G_TRAVERSE_ALL, -1, output_func, NULL);
2160 }
2161
2162 static MimeInfo *procmime_scan_file_with_offset(const gchar *filename, int offset, gboolean short_scan)
2163 {
2164 MimeInfo *mimeinfo;
2165 struct stat buf;
2166
2167 if (g_stat(filename, &buf) < 0) {
2168 FILE_OP_ERROR(filename, "stat");
2169 return NULL;
2170 }
2171
2172 mimeinfo = procmime_mimeinfo_new();
2173 mimeinfo->content = MIMECONTENT_FILE;
2174 mimeinfo->encoding_type = ENC_UNKNOWN;
2175 mimeinfo->type = MIMETYPE_MESSAGE;
2176 mimeinfo->subtype = g_strdup("rfc822");
2177 mimeinfo->data.filename = g_strdup(filename);
2178 mimeinfo->offset = offset;
2179 mimeinfo->length = buf.st_size - offset;
2180
2181 procmime_parse_message_rfc822(mimeinfo, short_scan);
2182 if (debug_get_mode())
2183 output_mime_structure(mimeinfo, 0);
2184
2185 return mimeinfo;
2186 }
2187
2188 static MimeInfo *procmime_scan_file_full(const gchar *filename, gboolean short_scan)
2189 {
2190 MimeInfo *mimeinfo;
2191
2192 cm_return_val_if_fail(filename != NULL, NULL);
2193
2194 mimeinfo = procmime_scan_file_with_offset(filename, 0, short_scan);
2195
2196 return mimeinfo;
2197 }
2198
2199 MimeInfo *procmime_scan_file(const gchar *filename)
2200 {
2201 return procmime_scan_file_full(filename, FALSE);
2202 }
2203
2204 static MimeInfo *procmime_scan_file_short(const gchar *filename)
2205 {
2206 return procmime_scan_file_full(filename, TRUE);
2207 }
2208
2209 static MimeInfo *procmime_scan_queue_file_full(const gchar *filename, gboolean short_scan)
2210 {
2211 FILE *fp;
2212 MimeInfo *mimeinfo;
2213 gchar buf[BUFFSIZE];
2214 gint offset = 0;
2215
2216 cm_return_val_if_fail(filename != NULL, NULL);
2217
2218 /* Open file */
2219 if ((fp = procmime_fopen(filename, "rb")) == NULL)
2220 return NULL;
2221 /* Skip queue header */
2222 while (SC_FGETS(buf, sizeof(buf), fp) != NULL) {
2223 /* new way */
2224 if ((!strncmp(buf, "X-Claws-End-Special-Headers: 1",
2225 strlen("X-Claws-End-Special-Headers:"))) ||
2226 (!strncmp(buf, "X-Sylpheed-End-Special-Headers: 1",
2227 strlen("X-Sylpheed-End-Special-Headers:"))))
2228 break;
2229 /* old way */
2230 if (buf[0] == '\r' || buf[0] == '\n') break;
2231 /* from other mailers */
2232 if (!strncmp(buf, "Date: ", 6)
2233 || !strncmp(buf, "To: ", 4)
2234 || !strncmp(buf, "From: ", 6)
2235 || !strncmp(buf, "Subject: ", 9)) {
2236 rewind(fp);
2237 break;
2238 }
2239 }
2240 offset = ftell(fp);
2241 procmime_fclose(fp);
2242
2243 mimeinfo = procmime_scan_file_with_offset(filename, offset, short_scan);
2244
2245 return mimeinfo;
2246 }
2247
2248 MimeInfo *procmime_scan_queue_file(const gchar *filename)
2249 {
2250 return procmime_scan_queue_file_full(filename, FALSE);
2251 }
2252
2253 static MimeInfo *procmime_scan_queue_file_short(const gchar *filename)
2254 {
2255 return procmime_scan_queue_file_full(filename, TRUE);
2256 }
2257
2258 typedef enum {
2259 ENC_AS_TOKEN,
2260 ENC_AS_QUOTED_STRING,
2261 ENC_AS_EXTENDED,
2262 ENC_AS_ENCWORD
2263 } EncodeAs;
2264
2265 typedef struct _ParametersData {
2266 FILE *fp;
2267 guint len;
2268 gint error;
2269 } ParametersData;
2270
2271 static void write_parameters(gpointer key, gpointer value, gpointer user_data)
2272 {
2273 gchar *param = key;
2274 gchar *val = value, *valpos, *tmp;
2275 ParametersData *pdata = (ParametersData *)user_data;
2276 GString *buf = g_string_new("");
2277 gint len;
2278
2279 EncodeAs encas = ENC_AS_TOKEN;
2280
2281 for (valpos = val; *valpos != 0; valpos++) {
2282 if (!IS_ASCII(*valpos)) {
2283 encas = ENC_AS_ENCWORD;
2284 break;
2285 }
2286
2287 /* CTLs */
2288 if (((*valpos >= 0) && (*valpos < 037)) || (*valpos == 0177)) {
2289 encas = ENC_AS_QUOTED_STRING;
2290 continue;
2291 }
2292
2293 /* tspecials + SPACE */
2294 switch (*valpos) {
2295 case ' ':
2296 case '(':
2297 case ')':
2298 case '<':
2299 case '>':
2300 case '@':
2301 case ',':
2302 case ';':
2303 case ':':
2304 case '\\':
2305 case '"':
2306 case '/':
2307 case '[':
2308 case ']':
2309 case '?':
2310 case '=':
2311 encas = ENC_AS_QUOTED_STRING;
2312 continue;
2313 }
2314 }
2315
2316 switch (encas) {
2317 case ENC_AS_TOKEN:
2318 g_string_append_printf(buf, "%s=%s", param, val);
2319 break;
2320
2321 case ENC_AS_QUOTED_STRING:
2322 g_string_append_printf(buf, "%s=\"%s\"", param, val);
2323 break;
2324
2325 #if 0 /* we don't use that for now */
2326 case ENC_AS_EXTENDED:
2327 if (!g_utf8_validate(val, -1, NULL))
2328 g_string_append_printf(buf, "%s*=%s''", param,
2329 conv_get_locale_charset_str());
2330 else
2331 g_string_append_printf(buf, "%s*=%s''", param,
2332 CS_INTERNAL);
2333 for (valpos = val; *valpos != '\0'; valpos++) {
2334 if (IS_ASCII(*valpos) && isalnum(*valpos)) {
2335 g_string_append_printf(buf, "%c", *valpos);
2336 } else {
2337 gchar hexstr[3] = "XX";
2338 get_hex_str(hexstr, *valpos);
2339 g_string_append_printf(buf, "%%%s", hexstr);
2340 }
2341 }
2342 break;
2343 #else
2344 case ENC_AS_EXTENDED:
2345 debug_print("Unhandled ENC_AS_EXTENDED.");
2346 break;
2347 #endif
2348 case ENC_AS_ENCWORD:
2349 len = MAX(strlen(val)*6, 512);
2350 tmp = g_malloc(len+1);
2351 codeconv_set_strict(TRUE);
2352 conv_encode_header_full(tmp, len, val, pdata->len + strlen(param) + 4 , FALSE,
2353 prefs_common.outgoing_charset);
2354 codeconv_set_strict(FALSE);
2355 if (!tmp || !*tmp) {
2356 codeconv_set_strict(TRUE);
2357 conv_encode_header_full(tmp, len, val, pdata->len + strlen(param) + 4 , FALSE,
2358 conv_get_outgoing_charset_str());
2359 codeconv_set_strict(FALSE);
2360 }
2361 if (!tmp || !*tmp) {
2362 codeconv_set_strict(TRUE);
2363 conv_encode_header_full(tmp, len, val, pdata->len + strlen(param) + 4 , FALSE,
2364 CS_UTF_8);
2365 codeconv_set_strict(FALSE);
2366 }
2367 if (!tmp || !*tmp) {
2368 conv_encode_header_full(tmp, len, val, pdata->len + strlen(param) + 4 , FALSE,
2369 CS_UTF_8);
2370 }
2371 g_string_append_printf(buf, "%s=\"%s\"", param, tmp);
2372 g_free(tmp);
2373 break;
2374
2375 }
2376
2377 if (buf->str && strlen(buf->str)) {
2378 tmp = strstr(buf->str, "\n");
2379 if (tmp)
2380 len = (tmp - buf->str);
2381 else
2382 len = strlen(buf->str);
2383 if (pdata->len + len > 76) {
2384 if (fprintf(pdata->fp, ";\n %s", buf->str) < 0)
2385 pdata->error = TRUE;
2386 pdata->len = strlen(buf->str) + 1;
2387 } else {
2388 if (fprintf(pdata->fp, "; %s", buf->str) < 0)
2389 pdata->error = TRUE;
2390 pdata->len += strlen(buf->str) + 2;
2391 }
2392 }
2393 g_string_free(buf, TRUE);
2394 }
2395
2396 #define TRY(func) { \
2397 if (!(func)) { \
2398 return -1; \
2399 } \
2400 }
2401
2402 int procmime_write_mime_header(MimeInfo *mimeinfo, FILE *fp)
2403 {
2404 struct TypeTable *type_table;
2405 ParametersData *pdata = g_new0(ParametersData, 1);
2406 debug_print("procmime_write_mime_header\n");
2407
2408 pdata->fp = fp;
2409 pdata->error = FALSE;
2410 for (type_table = mime_type_table; type_table->str != NULL; type_table++)
2411 if (mimeinfo->type == type_table->type) {
2412 gchar *buf = g_strdup_printf(
2413 "Content-Type: %s/%s", type_table->str, mimeinfo->subtype);
2414 if (fprintf(fp, "%s", buf) < 0) {
2415 g_free(buf);
2416 g_free(pdata);
2417 return -1;
2418 }
2419 pdata->len = strlen(buf);
2420 g_free(buf);
2421 break;
2422 }
2423 g_hash_table_foreach(mimeinfo->typeparameters, write_parameters, pdata);
2424 if (pdata->error == TRUE) {
2425 g_free(pdata);
2426 return -1;
2427 }
2428 g_free(pdata);
2429
2430 TRY(fprintf(fp, "\n") >= 0);
2431
2432 if (mimeinfo->encoding_type != ENC_UNKNOWN)
2433 TRY(fprintf(fp, "Content-Transfer-Encoding: %s\n", procmime_get_encoding_str(mimeinfo->encoding_type)) >= 0);
2434
2435 if (mimeinfo->description != NULL)
2436 TRY(fprintf(fp, "Content-Description: %s\n", mimeinfo->description) >= 0);
2437
2438 if (mimeinfo->id != NULL)
2439 TRY(fprintf(fp, "Content-ID: %s\n", mimeinfo->id) >= 0);
2440
2441 if (mimeinfo->location != NULL)
2442 TRY(fprintf(fp, "Content-Location: %s\n", mimeinfo->location) >= 0);
2443
2444 if (mimeinfo->disposition != DISPOSITIONTYPE_UNKNOWN) {
2445 ParametersData *pdata = g_new0(ParametersData, 1);
2446 gchar *buf = NULL;
2447 if (mimeinfo->disposition == DISPOSITIONTYPE_INLINE)
2448 buf = g_strdup("Content-Disposition: inline");
2449 else if (mimeinfo->disposition == DISPOSITIONTYPE_ATTACHMENT)
2450 buf = g_strdup("Content-Disposition: attachment");
2451 else
2452 buf = g_strdup("Content-Disposition: unknown");
2453
2454 if (fprintf(fp, "%s", buf) < 0) {
2455 g_free(buf);
2456 g_free(pdata);
2457 return -1;
2458 }
2459 pdata->len = strlen(buf);
2460 g_free(buf);
2461
2462 pdata->fp = fp;
2463 pdata->error = FALSE;
2464 g_hash_table_foreach(mimeinfo->dispositionparameters, write_parameters, pdata);
2465 if (pdata->error == TRUE) {
2466 g_free(pdata);
2467 return -1;
2468 }
2469 g_free(pdata);
2470 TRY(fprintf(fp, "\n") >= 0);
2471 }
2472
2473 TRY(fprintf(fp, "\n") >= 0);
2474
2475 return 0;
2476 }
2477
2478 static gint procmime_write_message_rfc822(MimeInfo *mimeinfo, FILE *fp)
2479 {
2480 FILE *infp;
2481 GNode *childnode;
2482 MimeInfo *child;
2483 gchar buf[BUFFSIZE];
2484 gboolean skip = FALSE;;
2485 size_t len;
2486
2487 debug_print("procmime_write_message_rfc822\n");
2488
2489 /* write header */
2490 switch (mimeinfo->content) {
2491 case MIMECONTENT_FILE:
2492 if ((infp = procmime_fopen(mimeinfo->data.filename, "rb")) == NULL) {
2493 FILE_OP_ERROR(mimeinfo->data.filename, "fopen");
2494 return -1;
2495 }
2496 if (fseek(infp, mimeinfo->offset, SEEK_SET) < 0) {
2497 FILE_OP_ERROR(mimeinfo->data.filename, "fseek");
2498 procmime_fclose(infp);
2499 return -1;
2500 }
2501 while (SC_FGETS(buf, sizeof(buf), infp) == buf) {
2502 strcrchomp(buf);
2503 if (buf[0] == '\n' && buf[1] == '\0')
2504 break;
2505 if (skip && (buf[0] == ' ' || buf[0] == '\t'))
2506 continue;
2507 if (g_ascii_strncasecmp(buf, "MIME-Version:", 13) == 0 ||
2508 g_ascii_strncasecmp(buf, "Content-Type:", 13) == 0 ||
2509 g_ascii_strncasecmp(buf, "Content-Transfer-Encoding:", 26) == 0 ||
2510 g_ascii_strncasecmp(buf, "Content-Description:", 20) == 0 ||
2511 g_ascii_strncasecmp(buf, "Content-ID:", 11) == 0 ||
2512 g_ascii_strncasecmp(buf, "Content-Location:", 17) == 0 ||
2513 g_ascii_strncasecmp(buf, "Content-Disposition:", 20) == 0) {
2514 skip = TRUE;
2515 continue;
2516 }
2517 len = strlen(buf);
2518 if (SC_FWRITE(buf, sizeof(gchar), len, fp) < len) {
2519 g_warning("failed to dump %zd bytes from file", len);
2520 procmime_fclose(infp);
2521 return -1;
2522 }
2523 skip = FALSE;
2524 }
2525 procmime_fclose(infp);
2526 break;
2527
2528 case MIMECONTENT_MEM:
2529 len = strlen(mimeinfo->data.mem);
2530 if (SC_FWRITE(mimeinfo->data.mem, sizeof(gchar), len, fp) < len) {
2531 g_warning("failed to dump %zd bytes from mem", len);
2532 return -1;
2533 }
2534 break;
2535
2536 default:
2537 break;
2538 }
2539
2540 childnode = mimeinfo->node->children;
2541 if (childnode == NULL)
2542 return -1;
2543
2544 child = (MimeInfo *) childnode->data;
2545 if (fprintf(fp, "MIME-Version: 1.0\n") < 0) {
2546 g_warning("failed to write mime version");
2547 return -1;
2548 }
2549 if (procmime_write_mime_header(child, fp) < 0)
2550 return -1;
2551 return procmime_write_mimeinfo(child, fp);
2552 }
2553
2554 static gint procmime_write_multipart(MimeInfo *mimeinfo, FILE *fp)
2555 {
2556 FILE *infp;
2557 GNode *childnode;
2558 gchar *boundary, *str, *str2;
2559 gchar buf[BUFFSIZE];
2560 gboolean firstboundary;
2561 size_t len;
2562
2563 debug_print("procmime_write_multipart\n");
2564
2565 boundary = g_hash_table_lookup(mimeinfo->typeparameters, "boundary");
2566
2567 switch (mimeinfo->content) {
2568 case MIMECONTENT_FILE:
2569 if ((infp = procmime_fopen(mimeinfo->data.filename, "rb")) == NULL) {
2570 FILE_OP_ERROR(mimeinfo->data.filename, "fopen");
2571 return -1;
2572 }
2573 if (fseek(infp, mimeinfo->offset, SEEK_SET) < 0) {
2574 FILE_OP_ERROR(mimeinfo->data.filename, "fseek");
2575 procmime_fclose(infp);
2576 return -1;
2577 }
2578 while (SC_FGETS(buf, sizeof(buf), infp) == buf) {
2579 if (IS_BOUNDARY(buf, boundary, strlen(boundary)))
2580 break;
2581 len = strlen(buf);
2582 if (SC_FWRITE(buf, sizeof(gchar), len, fp) < len) {
2583 g_warning("failed to write %zd", len);
2584 procmime_fclose(infp);
2585 return -1;
2586 }
2587 }
2588 procmime_fclose(infp);
2589 break;
2590
2591 case MIMECONTENT_MEM:
2592 str = g_strdup(mimeinfo->data.mem);
2593 if (((str2 = strstr(str, boundary)) != NULL) && ((str2 - str) >= 2) &&
2594 (*(str2 - 1) == '-') && (*(str2 - 2) == '-'))
2595 *(str2 - 2) = '\0';
2596 len = strlen(str);
2597 if (SC_FWRITE(str, sizeof(gchar), len, fp) < len) {
2598 g_warning("failed to write %zd from mem", len);
2599 g_free(str);
2600 return -1;
2601 }
2602 g_free(str);
2603 break;
2604
2605 default:
2606 break;
2607 }
2608
2609 childnode = mimeinfo->node->children;
2610 firstboundary = TRUE;
2611 while (childnode != NULL) {
2612 MimeInfo *child = childnode->data;
2613
2614 if (firstboundary)
2615 firstboundary = FALSE;
2616 else
2617 TRY(fprintf(fp, "\n") >= 0);
2618
2619 TRY(fprintf(fp, "--%s\n", boundary) >= 0);
2620
2621 if (procmime_write_mime_header(child, fp) < 0)
2622 return -1;
2623 if (procmime_write_mimeinfo(child, fp) < 0)
2624 return -1;
2625
2626 childnode = g_node_next_sibling(childnode);
2627 }
2628 TRY(fprintf(fp, "\n--%s--\n", boundary) >= 0);
2629
2630 return 0;
2631 }
2632
2633 gint procmime_write_mimeinfo(MimeInfo *mimeinfo, FILE *fp)
2634 {
2635 FILE *infp;
2636 size_t len;
2637 debug_print("procmime_write_mimeinfo\n");
2638
2639 if (G_NODE_IS_LEAF(mimeinfo->node)) {
2640 switch (mimeinfo->content) {
2641 case MIMECONTENT_FILE:
2642 if ((infp = procmime_fopen(mimeinfo->data.filename, "rb")) == NULL) {
2643 FILE_OP_ERROR(mimeinfo->data.filename, "fopen");
2644 return -1;
2645 }
2646 copy_file_part_to_fp(infp, mimeinfo->offset, mimeinfo->length, fp);
2647 procmime_fclose(infp);
2648 return 0;
2649
2650 case MIMECONTENT_MEM:
2651 len = strlen(mimeinfo->data.mem);
2652 if (SC_FWRITE(mimeinfo->data.mem, sizeof(gchar), len, fp) < len)
2653 return -1;
2654 return 0;
2655
2656 default:
2657 return 0;
2658 }
2659 } else {
2660 /* Call writer for mime type */
2661 switch (mimeinfo->type) {
2662 case MIMETYPE_MESSAGE:
2663 if (g_ascii_strcasecmp(mimeinfo->subtype, "rfc822") == 0) {
2664 return procmime_write_message_rfc822(mimeinfo, fp);
2665 }
2666 break;
2667
2668 case MIMETYPE_MULTIPART:
2669 return procmime_write_multipart(mimeinfo, fp);
2670
2671 default:
2672 break;
2673 }
2674
2675 return -1;
2676 }
2677
2678 return 0;
2679 }
2680
2681 gchar *procmime_get_part_file_name(MimeInfo *mimeinfo)
2682 {
2683 gchar *base;
2684
2685 if ((mimeinfo->type == MIMETYPE_TEXT) && !g_ascii_strcasecmp(mimeinfo->subtype, "html"))
2686 base = g_strdup("mimetmp.html");
2687 else {
2688 const gchar *basetmp;
2689 gchar *basename;
2690
2691 basetmp = procmime_mimeinfo_get_parameter(mimeinfo, "filename");
2692 if (basetmp == NULL)
2693 basetmp = procmime_mimeinfo_get_parameter(mimeinfo, "name");
2694 if (basetmp == NULL)
2695 basetmp = "mimetmp";
2696 basename = g_path_get_basename(basetmp);
2697 if (*basename == '\0') {
2698 g_free(basename);
2699 basename = g_strdup("mimetmp");
2700 }
2701 base = conv_filename_from_utf8(basename);
2702 g_free(basename);
2703 subst_for_shellsafe_filename(base);
2704 }
2705
2706 return base;
2707 }
2708