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2013-01-21 [paul] 3.9.0cvs57
[claws.git] / src / procmime.c
blob579674126150a91122b254c5f6d829734d882b3d
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 infp = procmime_fopen(mimeinfo->data.filename, "rb");
353 if (!infp) {
354 perror("fopen");
355 return FALSE;
356 }
357 fseek(infp, mimeinfo->offset, SEEK_SET);
358
359 outfp = get_tmpfile_in_dir(get_mime_tmp_dir(), &tmpfilename);
360 if (!outfp) {
361 perror("tmpfile");
362 procmime_fclose(infp);
363 return FALSE;
364 }
365 tmp_file = TRUE;
366 readend = mimeinfo->offset + mimeinfo->length;
367
368 if (encoding == ENC_QUOTED_PRINTABLE) {
369 while ((ftell(infp) < readend) && (SC_FGETS(buf, sizeof(buf), infp) != NULL)) {
370 gint len;
371 len = qp_decode_line(buf);
372 buf[len]='\0';
373 if (!flowed) {
374 if (SC_FWRITE(buf, 1, len, outfp) < len)
375 err = TRUE;
376 } else {
377 FLUSH_LASTLINE();
378 }
379 }
380 if (flowed)
381 FLUSH_LASTLINE();
382 } else if (encoding == ENC_BASE64) {
383 gchar outbuf[BUFFSIZE];
384 gint len, inlen, inread;
385 Base64Decoder *decoder;
386 gboolean got_error = FALSE;
387 gboolean uncanonicalize = FALSE;
388 FILE *tmpfp = outfp;
389 gboolean null_bytes = FALSE;
390 gboolean starting = TRUE;
391
392 if (mimeinfo->type == MIMETYPE_TEXT ||
393 mimeinfo->type == MIMETYPE_MESSAGE) {
394 uncanonicalize = TRUE;
395 tmpfp = my_tmpfile();
396 if (!tmpfp) {
397 perror("tmpfile");
398 if (tmp_file)
399 procmime_fclose(outfp);
400 procmime_fclose(infp);
401 return FALSE;
402 }
403 #ifdef HAVE_FGETS_UNLOCKED
404 flockfile(tmpfp);
405 #endif
406 }
407
408 decoder = base64_decoder_new();
409 while ((inlen = MIN(readend - ftell(infp), sizeof(buf))) > 0 && !err) {
410 inread = SC_FREAD(buf, 1, inlen, infp);
411 len = base64_decoder_decode(decoder, buf, outbuf, inread);
412 if (uncanonicalize == TRUE && strlen(outbuf) < len && starting) {
413 uncanonicalize = FALSE;
414 null_bytes = TRUE;
415 }
416 starting = FALSE;
417 if (((inread != inlen) || len < 0) && !got_error) {
418 g_warning("Bad BASE64 content.\n");
419 if (SC_FWRITE(_("[Error decoding BASE64]\n"),
420 sizeof(gchar),
421 strlen(_("[Error decoding BASE64]\n")),
422 tmpfp) < strlen(_("[Error decoding BASE64]\n")))
423 g_warning("error decoding BASE64");
424 got_error = TRUE;
425 continue;
426 } else if (len >= 0) {
427 /* print out the error message only once
428 * per block */
429 if (null_bytes) {
430 /* we won't uncanonicalize, output to outfp directly */
431 if (SC_FWRITE(outbuf, sizeof(gchar), len, outfp) < len)
432 err = TRUE;
433 } else {
434 if (SC_FWRITE(outbuf, sizeof(gchar), len, tmpfp) < len)
435 err = TRUE;
436 }
437 got_error = FALSE;
438 }
439 }
440 base64_decoder_free(decoder);
441
442 if (uncanonicalize) {
443 rewind(tmpfp);
444 while (SC_FGETS(buf, sizeof(buf), tmpfp) != NULL) {
445 strcrchomp(buf);
446 if (SC_FPUTS(buf, outfp) == EOF)
447 err = TRUE;
448 }
449 procmime_fclose(tmpfp);
450 }
451 } else if (encoding == ENC_X_UUENCODE) {
452 gchar outbuf[BUFFSIZE];
453 gint len;
454 gboolean flag = FALSE;
455
456 while ((ftell(infp) < readend) && (SC_FGETS(buf, sizeof(buf), infp) != NULL)) {
457 if (!flag && strncmp(buf,"begin ", 6)) continue;
458
459 if (flag) {
460 len = fromuutobits(outbuf, buf);
461 if (len <= 0) {
462 if (len < 0)
463 g_warning("Bad UUENCODE content(%d)\n", len);
464 break;
465 }
466 if (SC_FWRITE(outbuf, sizeof(gchar), len, outfp) < len)
467 err = TRUE;
468 } else
469 flag = TRUE;
470 }
471 } else {
472 while ((ftell(infp) < readend) && (SC_FGETS(buf, sizeof(buf), infp) != NULL)) {
473 if (!flowed) {
474 if (SC_FPUTS(buf, outfp) == EOF)
475 err = TRUE;
476 } else {
477 FLUSH_LASTLINE();
478 }
479 }
480 if (flowed)
481 FLUSH_LASTLINE();
482 if (err == TRUE)
483 g_warning("write error");
484 }
485
486 procmime_fclose(outfp);
487 procmime_fclose(infp);
488
489 if (err == TRUE) {
490 return FALSE;
491 }
492
493 g_stat(tmpfilename, &statbuf);
494 if (mimeinfo->tmp && (mimeinfo->data.filename != NULL))
495 claws_unlink(mimeinfo->data.filename);
496 g_free(mimeinfo->data.filename);
497 mimeinfo->data.filename = tmpfilename;
498 mimeinfo->tmp = TRUE;
499 mimeinfo->offset = 0;
500 mimeinfo->length = statbuf.st_size;
501 mimeinfo->encoding_type = ENC_BINARY;
502
503 return TRUE;
504 }
505
506 #define B64_LINE_SIZE 57
507 #define B64_BUFFSIZE 77
508
509 gboolean procmime_encode_content(MimeInfo *mimeinfo, EncodingType encoding)
510 {
511 FILE *infp = NULL, *outfp;
512 gint len;
513 gchar *tmpfilename;
514 struct stat statbuf;
515 gboolean err = FALSE;
516
517 if (mimeinfo->content == MIMECONTENT_EMPTY)
518 return TRUE;
519
520 if (mimeinfo->encoding_type != ENC_UNKNOWN &&
521 mimeinfo->encoding_type != ENC_BINARY &&
522 mimeinfo->encoding_type != ENC_7BIT &&
523 mimeinfo->encoding_type != ENC_8BIT)
524 if(!procmime_decode_content(mimeinfo))
525 return FALSE;
526
527 outfp = get_tmpfile_in_dir(get_mime_tmp_dir(), &tmpfilename);
528 if (!outfp) {
529 perror("tmpfile");
530 return FALSE;
531 }
532 #ifdef HAVE_FGETS_UNLOCKED
533 flockfile(outfp);
534 #endif
535
536 if (mimeinfo->content == MIMECONTENT_FILE && mimeinfo->data.filename) {
537 if ((infp = procmime_fopen(mimeinfo->data.filename, "rb")) == NULL) {
538 g_warning("Can't open file %s\n", mimeinfo->data.filename);
539 procmime_fclose(outfp);
540 return FALSE;
541 }
542 } else if (mimeinfo->content == MIMECONTENT_MEM) {
543 infp = str_open_as_stream(mimeinfo->data.mem);
544 if (infp == NULL) {
545 procmime_fclose(outfp);
546 return FALSE;
547 }
548 #ifdef HAVE_FGETS_UNLOCKED
549 flockfile(infp);
550 #endif
551
552 }
553
554 if (encoding == ENC_BASE64) {
555 gchar inbuf[B64_LINE_SIZE], outbuf[B64_BUFFSIZE];
556 FILE *tmp_fp = infp;
557 gchar *tmp_file = NULL;
558
559 if (mimeinfo->type == MIMETYPE_TEXT ||
560 mimeinfo->type == MIMETYPE_MESSAGE) {
561 if (mimeinfo->content == MIMECONTENT_FILE) {
562 tmp_file = get_tmp_file();
563 if (canonicalize_file(mimeinfo->data.filename, tmp_file) < 0) {
564 g_free(tmp_file);
565 procmime_fclose(infp);
566 procmime_fclose(outfp);
567 return FALSE;
568 }
569 if ((tmp_fp = procmime_fopen(tmp_file, "rb")) == NULL) {
570 FILE_OP_ERROR(tmp_file, "fopen");
571 claws_unlink(tmp_file);
572 g_free(tmp_file);
573 procmime_fclose(infp);
574 procmime_fclose(outfp);
575 return FALSE;
576 }
577 } else {
578 gchar *out = canonicalize_str(mimeinfo->data.mem);
579 procmime_fclose(infp);
580 infp = str_open_as_stream(out);
581 tmp_fp = infp;
582 g_free(out);
583 if (infp == NULL) {
584 procmime_fclose(outfp);
585 return FALSE;
586 }
587 #ifdef HAVE_FGETS_UNLOCKED
588 flockfile(infp);
589 #endif
590 }
591 }
592
593 while ((len = SC_FREAD(inbuf, sizeof(gchar),
594 B64_LINE_SIZE, tmp_fp))
595 == B64_LINE_SIZE) {
596 base64_encode(outbuf, inbuf, B64_LINE_SIZE);
597 if (SC_FPUTS(outbuf, outfp) == EOF)
598 err = TRUE;
599 if (SC_FPUTC('\n', outfp) == EOF)
600 err = TRUE;
601 }
602 if (len > 0 && SC_FEOF(tmp_fp)) {
603 base64_encode(outbuf, inbuf, len);
604 if (SC_FPUTS(outbuf, outfp) == EOF)
605 err = TRUE;
606 if (SC_FPUTC('\n', outfp) == EOF)
607 err = TRUE;
608 }
609
610 if (tmp_file) {
611 procmime_fclose(tmp_fp);
612 claws_unlink(tmp_file);
613 g_free(tmp_file);
614 }
615 } else if (encoding == ENC_QUOTED_PRINTABLE) {
616 gchar inbuf[BUFFSIZE], outbuf[BUFFSIZE * 4];
617
618 while (SC_FGETS(inbuf, sizeof(inbuf), infp) != NULL) {
619 qp_encode_line(outbuf, inbuf);
620
621 if (!strncmp("From ", outbuf, sizeof("From ")-1)) {
622 gchar *tmpbuf = outbuf;
623
624 tmpbuf += sizeof("From ")-1;
625
626 if (SC_FPUTS("=46rom ", outfp) == EOF)
627 err = TRUE;
628 if (SC_FPUTS(tmpbuf, outfp) == EOF)
629 err = TRUE;
630 } else {
631 if (SC_FPUTS(outbuf, outfp) == EOF)
632 err = TRUE;
633 }
634 }
635 } else {
636 gchar buf[BUFFSIZE];
637
638 while (SC_FGETS(buf, sizeof(buf), infp) != NULL) {
639 strcrchomp(buf);
640 if (SC_FPUTS(buf, outfp) == EOF)
641 err = TRUE;
642 }
643 }
644
645 procmime_fclose(outfp);
646 procmime_fclose(infp);
647
648 if (err == TRUE)
649 return FALSE;
650
651 if (mimeinfo->content == MIMECONTENT_FILE) {
652 if (mimeinfo->tmp && (mimeinfo->data.filename != NULL))
653 claws_unlink(mimeinfo->data.filename);
654 g_free(mimeinfo->data.filename);
655 } else if (mimeinfo->content == MIMECONTENT_MEM) {
656 if (mimeinfo->tmp && (mimeinfo->data.mem != NULL))
657 g_free(mimeinfo->data.mem);
658 }
659
660 g_stat(tmpfilename, &statbuf);
661 mimeinfo->content = MIMECONTENT_FILE;
662 mimeinfo->data.filename = tmpfilename;
663 mimeinfo->tmp = TRUE;
664 mimeinfo->offset = 0;
665 mimeinfo->length = statbuf.st_size;
666 mimeinfo->encoding_type = encoding;
667
668 return TRUE;
669 }
670
671 gint procmime_get_part(const gchar *outfile, MimeInfo *mimeinfo)
672 {
673 FILE *infp, *outfp;
674 gchar buf[BUFFSIZE];
675 gint restlength, readlength;
676 gint saved_errno = 0;
677
678 cm_return_val_if_fail(outfile != NULL, -1);
679 cm_return_val_if_fail(mimeinfo != NULL, -1);
680
681 if (mimeinfo->encoding_type != ENC_BINARY && !procmime_decode_content(mimeinfo))
682 return -EINVAL;
683
684 if ((infp = procmime_fopen(mimeinfo->data.filename, "rb")) == NULL) {
685 saved_errno = errno;
686 FILE_OP_ERROR(mimeinfo->data.filename, "fopen");
687 return -(saved_errno);
688 }
689 if (fseek(infp, mimeinfo->offset, SEEK_SET) < 0) {
690 saved_errno = errno;
691 FILE_OP_ERROR(mimeinfo->data.filename, "fseek");
692 procmime_fclose(infp);
693 return -(saved_errno);
694 }
695 if ((outfp = procmime_fopen(outfile, "wb")) == NULL) {
696 saved_errno = errno;
697 FILE_OP_ERROR(outfile, "fopen");
698 procmime_fclose(infp);
699 return -(saved_errno);
700 }
701
702 restlength = mimeinfo->length;
703
704 while ((restlength > 0) && ((readlength = SC_FREAD(buf, 1, restlength > BUFFSIZE ? BUFFSIZE : restlength, infp)) > 0)) {
705 if (SC_FWRITE(buf, 1, readlength, outfp) != readlength) {
706 saved_errno = errno;
707 procmime_fclose(infp);
708 procmime_fclose(outfp);
709 return -(saved_errno);
710 }
711 restlength -= readlength;
712 }
713
714 procmime_fclose(infp);
715 if (procmime_fclose(outfp) == EOF) {
716 saved_errno = errno;
717 FILE_OP_ERROR(outfile, "fclose");
718 claws_unlink(outfile);
719 return -(saved_errno);
720 }
721
722 return 0;
723 }
724
725 gboolean procmime_scan_text_content(MimeInfo *mimeinfo,
726 gboolean (*scan_callback)(const gchar *str, gpointer cb_data),
727 gpointer cb_data)
728 {
729 FILE *tmpfp;
730 const gchar *src_codeset;
731 gboolean conv_fail = FALSE;
732 gchar buf[BUFFSIZE];
733 gchar *str;
734 gchar *tmpfile;
735 gboolean scan_ret = FALSE;
736
737 cm_return_val_if_fail(mimeinfo != NULL, TRUE);
738 cm_return_val_if_fail(scan_callback != NULL, TRUE);
739
740 if (!procmime_decode_content(mimeinfo))
741 return TRUE;
742
743 tmpfile = procmime_get_tmp_file_name(mimeinfo);
744 if (tmpfile == NULL)
745 return TRUE;
746
747 if (procmime_get_part(tmpfile, mimeinfo) < 0) {
748 g_free(tmpfile);
749 return TRUE;
750 }
751
752 tmpfp = procmime_fopen(tmpfile, "rb");
753 if (tmpfp == NULL) {
754 g_free(tmpfile);
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) {
799 while (SC_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(str, cb_data)) == TRUE)
810 break;
811 }
812 }
813 }
814
815 if (conv_fail)
816 g_warning("procmime_get_text_content(): Code conversion failed.\n");
817
818 procmime_fclose(tmpfp);
819 claws_unlink(tmpfile);
820 g_free(tmpfile);
821
822 return scan_ret;
823 }
824
825 static gboolean scan_fputs_cb(const gchar *str, gpointer fp)
826 {
827 if (SC_FPUTS(str, (FILE *)fp) == EOF)
828 return TRUE;
829
830 return FALSE;
831 }
832
833 FILE *procmime_get_text_content(MimeInfo *mimeinfo)
834 {
835 FILE *outfp;
836 gboolean err;
837
838 if ((outfp = my_tmpfile()) == NULL) {
839 perror("tmpfile");
840 return NULL;
841 }
842 #ifdef HAVE_FGETS_UNLOCKED
843 flockfile(outfp);
844 #endif
845
846 err = procmime_scan_text_content(mimeinfo, scan_fputs_cb, outfp);
847
848 rewind(outfp);
849 if (err == TRUE) {
850 procmime_fclose(outfp);
851 return NULL;
852 }
853 #ifdef HAVE_FGETS_UNLOCKED
854 funlockfile(outfp);
855 #endif
856 return outfp;
857
858 }
859
860 FILE *procmime_get_binary_content(MimeInfo *mimeinfo)
861 {
862 FILE *outfp;
863 gchar *tmpfile;
864
865 cm_return_val_if_fail(mimeinfo != NULL, NULL);
866
867 if (!procmime_decode_content(mimeinfo))
868 return NULL;
869
870 tmpfile = procmime_get_tmp_file_name(mimeinfo);
871 if (tmpfile == NULL)
872 return NULL;
873
874 if (procmime_get_part(tmpfile, mimeinfo) < 0) {
875 g_free(tmpfile);
876 return NULL;
877 }
878
879 outfp = procmime_fopen(tmpfile, "rb");
880 if (outfp == NULL) {
881 g_unlink(tmpfile);
882 g_free(tmpfile);
883 return NULL;
884 }
885
886 g_unlink(tmpfile);
887 g_free(tmpfile);
888
889 #ifdef HAVE_FGETS_UNLOCKED
890 funlockfile(outfp);
891 #endif
892 return outfp;
893 }
894
895 /* search the first text part of (multipart) MIME message,
896 decode, convert it and output to outfp. */
897 FILE *procmime_get_first_text_content(MsgInfo *msginfo)
898 {
899 FILE *outfp = NULL;
900 MimeInfo *mimeinfo, *partinfo;
901 gboolean empty_ok = FALSE, short_scan = TRUE;
902
903 cm_return_val_if_fail(msginfo != NULL, NULL);
904
905 /* first we try to short-scan (for speed), refusing empty parts */
906 scan_again:
907 if (short_scan)
908 mimeinfo = procmime_scan_message_short(msginfo);
909 else
910 mimeinfo = procmime_scan_message(msginfo);
911 if (!mimeinfo) return NULL;
912
913 partinfo = mimeinfo;
914 while (partinfo && (partinfo->type != MIMETYPE_TEXT ||
915 (partinfo->length == 0 && !empty_ok))) {
916 partinfo = procmime_mimeinfo_next(partinfo);
917 }
918 if (partinfo)
919 outfp = procmime_get_text_content(partinfo);
920 else if (!empty_ok && short_scan) {
921 /* if short scan didn't find a non-empty part, rescan
922 * fully for non-empty parts
923 */
924 short_scan = FALSE;
925 procmime_mimeinfo_free_all(mimeinfo);
926 goto scan_again;
927 } else if (!empty_ok && !short_scan) {
928 /* if full scan didn't find a non-empty part, rescan
929 * accepting empty parts
930 */
931 empty_ok = TRUE;
932 procmime_mimeinfo_free_all(mimeinfo);
933 goto scan_again;
934 }
935 procmime_mimeinfo_free_all(mimeinfo);
936
937 /* outfp already unlocked at this time */
938 return outfp;
939 }
940
941
942 static gboolean find_encrypted_func(GNode *node, gpointer data)
943 {
944 MimeInfo *mimeinfo = (MimeInfo *) node->data;
945 MimeInfo **encinfo = (MimeInfo **) data;
946
947 if (privacy_mimeinfo_is_encrypted(mimeinfo)) {
948 *encinfo = mimeinfo;
949 return TRUE;
950 }
951
952 return FALSE;
953 }
954
955 static MimeInfo *find_encrypted_part(MimeInfo *rootinfo)
956 {
957 MimeInfo *encinfo = NULL;
958
959 g_node_traverse(rootinfo->node, G_IN_ORDER, G_TRAVERSE_ALL, -1,
960 find_encrypted_func, &encinfo);
961
962 return encinfo;
963 }
964
965 /* search the first encrypted text part of (multipart) MIME message,
966 decode, convert it and output to outfp. */
967 FILE *procmime_get_first_encrypted_text_content(MsgInfo *msginfo)
968 {
969 FILE *outfp = NULL;
970 MimeInfo *mimeinfo, *partinfo, *encinfo;
971
972 cm_return_val_if_fail(msginfo != NULL, NULL);
973
974 mimeinfo = procmime_scan_message(msginfo);
975 if (!mimeinfo) {
976 return NULL;
977 }
978
979 partinfo = mimeinfo;
980 if ((encinfo = find_encrypted_part(partinfo)) != NULL) {
981 debug_print("decrypting message part\n");
982 if (privacy_mimeinfo_decrypt(encinfo) < 0) {
983 alertpanel_error(_("Couldn't decrypt: %s"),
984 privacy_get_error());
985 return NULL;
986 }
987 }
988 partinfo = mimeinfo;
989 while (partinfo && partinfo->type != MIMETYPE_TEXT) {
990 partinfo = procmime_mimeinfo_next(partinfo);
991 if (privacy_mimeinfo_is_signed(partinfo))
992 procmsg_msginfo_set_flags(msginfo, 0, MSG_SIGNED);
993 }
994
995 if (partinfo)
996 outfp = procmime_get_text_content(partinfo);
997
998 procmime_mimeinfo_free_all(mimeinfo);
999
1000 /* outfp already unlocked at this time */
1001 return outfp;
1002 }
1003
1004 gboolean procmime_msginfo_is_encrypted(MsgInfo *msginfo)
1005 {
1006 MimeInfo *mimeinfo, *partinfo;
1007 gboolean result = FALSE;
1008
1009 cm_return_val_if_fail(msginfo != NULL, FALSE);
1010
1011 mimeinfo = procmime_scan_message(msginfo);
1012 if (!mimeinfo) {
1013 return FALSE;
1014 }
1015
1016 partinfo = mimeinfo;
1017 result = (find_encrypted_part(partinfo) != NULL);
1018 procmime_mimeinfo_free_all(mimeinfo);
1019
1020 return result;
1021 }
1022
1023 gchar *procmime_get_tmp_file_name(MimeInfo *mimeinfo)
1024 {
1025 static guint32 id = 0;
1026 gchar *base;
1027 gchar *filename;
1028 gchar f_prefix[10];
1029
1030 cm_return_val_if_fail(mimeinfo != NULL, NULL);
1031
1032 g_snprintf(f_prefix, sizeof(f_prefix), "%08x.", id++);
1033
1034 if ((mimeinfo->type == MIMETYPE_TEXT) && !g_ascii_strcasecmp(mimeinfo->subtype, "html"))
1035 base = g_strdup("mimetmp.html");
1036 else {
1037 const gchar *basetmp;
1038
1039 basetmp = procmime_mimeinfo_get_parameter(mimeinfo, "filename");
1040 if (basetmp == NULL)
1041 basetmp = procmime_mimeinfo_get_parameter(mimeinfo, "name");
1042 if (basetmp == NULL)
1043 basetmp = "mimetmp";
1044 basetmp = g_path_get_basename(basetmp);
1045 if (*basetmp == '\0')
1046 basetmp = g_strdup("mimetmp");
1047 base = conv_filename_from_utf8(basetmp);
1048 g_free((gchar*)basetmp);
1049 subst_for_shellsafe_filename(base);
1050 }
1051
1052 filename = g_strconcat(get_mime_tmp_dir(), G_DIR_SEPARATOR_S,
1053 f_prefix, base, NULL);
1054
1055 g_free(base);
1056
1057 return filename;
1058 }
1059
1060 static GList *mime_type_list = NULL;
1061
1062 gchar *procmime_get_mime_type(const gchar *filename)
1063 {
1064 const gchar *p;
1065 gchar *ext = NULL;
1066 gchar *base;
1067 #ifndef G_OS_WIN32
1068 static GHashTable *mime_type_table = NULL;
1069 MimeType *mime_type;
1070
1071 if (!mime_type_table) {
1072 mime_type_table = procmime_get_mime_type_table();
1073 if (!mime_type_table) return NULL;
1074 }
1075 #endif
1076
1077 if (filename == NULL)
1078 return NULL;
1079
1080 base = g_path_get_basename(filename);
1081 if ((p = strrchr(base, '.')) != NULL)
1082 ext = g_utf8_strdown(p + 1, -1);
1083 g_free(base);
1084
1085 #ifndef G_OS_WIN32
1086 mime_type = g_hash_table_lookup(mime_type_table, ext);
1087
1088 if (mime_type) {
1089 gchar *str;
1090 str = g_strconcat(mime_type->type, "/", mime_type->sub_type,
1091 NULL);
1092 debug_print("got type %s for %s\n", str, ext);
1093 g_free(ext);
1094 return str;
1095 }
1096 return NULL;
1097 #else
1098 gchar *str = get_content_type_from_registry_with_ext(ext);
1099
1100 g_free(ext);
1101 return str;
1102 #endif
1103 }
1104
1105 static guint procmime_str_hash(gconstpointer gptr)
1106 {
1107 guint hash_result = 0;
1108 const char *str;
1109
1110 for (str = gptr; str && *str; str++) {
1111 if (isupper(*str)) hash_result += (*str + ' ');
1112 else hash_result += *str;
1113 }
1114
1115 return hash_result;
1116 }
1117
1118 static gint procmime_str_equal(gconstpointer gptr1, gconstpointer gptr2)
1119 {
1120 const char *str1 = gptr1;
1121 const char *str2 = gptr2;
1122
1123 return !g_utf8_collate(str1, str2);
1124 }
1125
1126 static GHashTable *procmime_get_mime_type_table(void)
1127 {
1128 GHashTable *table = NULL;
1129 GList *cur;
1130 MimeType *mime_type;
1131 gchar **exts;
1132
1133 if (!mime_type_list) {
1134 mime_type_list = procmime_get_mime_type_list();
1135 if (!mime_type_list) return NULL;
1136 }
1137
1138 table = g_hash_table_new(procmime_str_hash, procmime_str_equal);
1139
1140 for (cur = mime_type_list; cur != NULL; cur = cur->next) {
1141 gint i;
1142 gchar *key;
1143
1144 mime_type = (MimeType *)cur->data;
1145
1146 if (!mime_type->extension) continue;
1147
1148 exts = g_strsplit(mime_type->extension, " ", 16);
1149 for (i = 0; exts[i] != NULL; i++) {
1150 /* use previously dup'd key on overwriting */
1151 if (g_hash_table_lookup(table, exts[i]))
1152 key = exts[i];
1153 else
1154 key = g_strdup(exts[i]);
1155 g_hash_table_insert(table, key, mime_type);
1156 }
1157 g_strfreev(exts);
1158 }
1159
1160 return table;
1161 }
1162
1163 GList *procmime_get_mime_type_list(void)
1164 {
1165 GList *list = NULL;
1166 FILE *fp;
1167 gchar buf[BUFFSIZE];
1168 gchar *p;
1169 gchar *delim;
1170 MimeType *mime_type;
1171 gboolean fp_is_glob_file = TRUE;
1172
1173 if (mime_type_list)
1174 return mime_type_list;
1175
1176 #if defined(__NetBSD__) || defined(__OpenBSD__) || defined(__FreeBSD__)
1177 if ((fp = procmime_fopen(DATAROOTDIR "/mime/globs", "rb")) == NULL)
1178 #else
1179 if ((fp = procmime_fopen("/usr/share/mime/globs", "rb")) == NULL)
1180 #endif
1181 {
1182 fp_is_glob_file = FALSE;
1183 if ((fp = procmime_fopen("/etc/mime.types", "rb")) == NULL) {
1184 if ((fp = procmime_fopen(SYSCONFDIR "/mime.types", "rb"))
1185 == NULL) {
1186 FILE_OP_ERROR(SYSCONFDIR "/mime.types",
1187 "fopen");
1188 return NULL;
1189 }
1190 }
1191 }
1192
1193 while (SC_FGETS(buf, sizeof(buf), fp) != NULL) {
1194 p = strchr(buf, '#');
1195 if (p) *p = '\0';
1196 g_strstrip(buf);
1197
1198 p = buf;
1199
1200 if (fp_is_glob_file) {
1201 while (*p && !g_ascii_isspace(*p) && (*p!=':')) p++;
1202 } else {
1203 while (*p && !g_ascii_isspace(*p)) p++;
1204 }
1205
1206 if (*p) {
1207 *p = '\0';
1208 p++;
1209 }
1210 delim = strchr(buf, '/');
1211 if (delim == NULL) continue;
1212 *delim = '\0';
1213
1214 mime_type = g_new(MimeType, 1);
1215 mime_type->type = g_strdup(buf);
1216 mime_type->sub_type = g_strdup(delim + 1);
1217
1218 if (fp_is_glob_file) {
1219 while (*p && (g_ascii_isspace(*p)||(*p=='*')||(*p=='.'))) p++;
1220 } else {
1221 while (*p && g_ascii_isspace(*p)) p++;
1222 }
1223
1224 if (*p)
1225 mime_type->extension = g_utf8_strdown(p, -1);
1226 else
1227 mime_type->extension = NULL;
1228
1229 list = g_list_append(list, mime_type);
1230 }
1231
1232 procmime_fclose(fp);
1233
1234 if (!list)
1235 g_warning("Can't read mime.types\n");
1236
1237 return list;
1238 }
1239
1240 EncodingType procmime_get_encoding_for_charset(const gchar *charset)
1241 {
1242 if (!charset)
1243 return ENC_8BIT;
1244 else if (!g_ascii_strncasecmp(charset, "ISO-2022-", 9) ||
1245 !g_ascii_strcasecmp(charset, "US-ASCII"))
1246 return ENC_7BIT;
1247 else if (!g_ascii_strcasecmp(charset, "ISO-8859-5") ||
1248 !g_ascii_strncasecmp(charset, "KOI8-", 5) ||
1249 !g_ascii_strcasecmp(charset, "Windows-1251"))
1250 return ENC_8BIT;
1251 else if (!g_ascii_strncasecmp(charset, "ISO-8859-", 9))
1252 return ENC_QUOTED_PRINTABLE;
1253 else if (!g_ascii_strncasecmp(charset, "UTF-8", 5))
1254 return ENC_QUOTED_PRINTABLE;
1255 else
1256 return ENC_8BIT;
1257 }
1258
1259 EncodingType procmime_get_encoding_for_text_file(const gchar *file, gboolean *has_binary)
1260 {
1261 FILE *fp;
1262 guchar buf[BUFFSIZE];
1263 size_t len;
1264 size_t octet_chars = 0;
1265 size_t total_len = 0;
1266 gfloat octet_percentage;
1267 gboolean force_b64 = FALSE;
1268
1269 if ((fp = procmime_fopen(file, "rb")) == NULL) {
1270 FILE_OP_ERROR(file, "fopen");
1271 return ENC_UNKNOWN;
1272 }
1273
1274 while ((len = SC_FREAD(buf, sizeof(guchar), sizeof(buf), fp)) > 0) {
1275 guchar *p;
1276 gint i;
1277
1278 for (p = buf, i = 0; i < len; ++p, ++i) {
1279 if (*p & 0x80)
1280 ++octet_chars;
1281 if (*p == '\0') {
1282 force_b64 = TRUE;
1283 *has_binary = TRUE;
1284 }
1285 }
1286 total_len += len;
1287 }
1288
1289 procmime_fclose(fp);
1290
1291 if (total_len > 0)
1292 octet_percentage = (gfloat)octet_chars / (gfloat)total_len;
1293 else
1294 octet_percentage = 0.0;
1295
1296 debug_print("procmime_get_encoding_for_text_file(): "
1297 "8bit chars: %zd / %zd (%f%%)\n", octet_chars, total_len,
1298 100.0 * octet_percentage);
1299
1300 if (octet_percentage > 0.20 || force_b64) {
1301 debug_print("using BASE64\n");
1302 return ENC_BASE64;
1303 } else if (octet_chars > 0) {
1304 debug_print("using quoted-printable\n");
1305 return ENC_QUOTED_PRINTABLE;
1306 } else {
1307 debug_print("using 7bit\n");
1308 return ENC_7BIT;
1309 }
1310 }
1311
1312 struct EncodingTable
1313 {
1314 gchar *str;
1315 EncodingType enc_type;
1316 };
1317
1318 struct EncodingTable encoding_table[] = {
1319 {"7bit", ENC_7BIT},
1320 {"8bit", ENC_8BIT},
1321 {"binary", ENC_BINARY},
1322 {"quoted-printable", ENC_QUOTED_PRINTABLE},
1323 {"base64", ENC_BASE64},
1324 {"x-uuencode", ENC_UNKNOWN},
1325 {NULL, ENC_UNKNOWN},
1326 };
1327
1328 const gchar *procmime_get_encoding_str(EncodingType encoding)
1329 {
1330 struct EncodingTable *enc_table;
1331
1332 for (enc_table = encoding_table; enc_table->str != NULL; enc_table++) {
1333 if (enc_table->enc_type == encoding)
1334 return enc_table->str;
1335 }
1336 return NULL;
1337 }
1338
1339 /* --- NEW MIME STUFF --- */
1340 struct TypeTable
1341 {
1342 gchar *str;
1343 MimeMediaType type;
1344 };
1345
1346 static struct TypeTable mime_type_table[] = {
1347 {"text", MIMETYPE_TEXT},
1348 {"image", MIMETYPE_IMAGE},
1349 {"audio", MIMETYPE_AUDIO},
1350 {"video", MIMETYPE_VIDEO},
1351 {"application", MIMETYPE_APPLICATION},
1352 {"message", MIMETYPE_MESSAGE},
1353 {"multipart", MIMETYPE_MULTIPART},
1354 {NULL, 0},
1355 };
1356
1357 const gchar *procmime_get_media_type_str(MimeMediaType type)
1358 {
1359 struct TypeTable *type_table;
1360
1361 for (type_table = mime_type_table; type_table->str != NULL; type_table++) {
1362 if (type_table->type == type)
1363 return type_table->str;
1364 }
1365 return NULL;
1366 }
1367
1368 MimeMediaType procmime_get_media_type(const gchar *str)
1369 {
1370 struct TypeTable *typetablearray;
1371
1372 for (typetablearray = mime_type_table; typetablearray->str != NULL; typetablearray++)
1373 if (g_ascii_strncasecmp(str, typetablearray->str, strlen(typetablearray->str)) == 0)
1374 return typetablearray->type;
1375
1376 return MIMETYPE_UNKNOWN;
1377 }
1378
1379 /*!
1380 *\brief Safe wrapper for content type string.
1381 *
1382 *\return const gchar * Pointer to content type string.
1383 */
1384 gchar *procmime_get_content_type_str(MimeMediaType type,
1385 const char *subtype)
1386 {
1387 const gchar *type_str = NULL;
1388
1389 if (subtype == NULL || !(type_str = procmime_get_media_type_str(type)))
1390 return g_strdup("unknown");
1391 return g_strdup_printf("%s/%s", type_str, subtype);
1392 }
1393
1394 static int procmime_parse_mimepart(MimeInfo *parent,
1395 gchar *content_type,
1396 gchar *content_encoding,
1397 gchar *content_description,
1398 gchar *content_id,
1399 gchar *content_disposition,
1400 gchar *content_location,
1401 const gchar *original_msgid,
1402 const gchar *disposition_notification_hdr,
1403 const gchar *filename,
1404 guint offset,
1405 guint length,
1406 gboolean short_scan);
1407
1408 static void procmime_parse_message_rfc822(MimeInfo *mimeinfo, gboolean short_scan)
1409 {
1410 HeaderEntry hentry[] = {{"Content-Type:", NULL, TRUE},
1411 {"Content-Transfer-Encoding:",
1412 NULL, FALSE},
1413 {"Content-Description:",
1414 NULL, TRUE},
1415 {"Content-ID:",
1416 NULL, TRUE},
1417 {"Content-Disposition:",
1418 NULL, TRUE},
1419 {"Content-Location:",
1420 NULL, TRUE},
1421 {"MIME-Version:",
1422 NULL, TRUE},
1423 {"Original-Message-ID:",
1424 NULL, TRUE},
1425 {"Disposition:",
1426 NULL, TRUE},
1427 {NULL, NULL, FALSE}};
1428 guint content_start, i;
1429 FILE *fp;
1430 gchar *tmp;
1431 gint len = 0;
1432
1433 procmime_decode_content(mimeinfo);
1434
1435 fp = procmime_fopen(mimeinfo->data.filename, "rb");
1436 if (fp == NULL) {
1437 FILE_OP_ERROR(mimeinfo->data.filename, "fopen");
1438 return;
1439 }
1440 fseek(fp, mimeinfo->offset, SEEK_SET);
1441 procheader_get_header_fields(fp, hentry);
1442 if (hentry[0].body != NULL) {
1443 tmp = conv_unmime_header(hentry[0].body, NULL, FALSE);
1444 g_free(hentry[0].body);
1445 hentry[0].body = tmp;
1446 }
1447 if (hentry[2].body != NULL) {
1448 tmp = conv_unmime_header(hentry[2].body, NULL, FALSE);
1449 g_free(hentry[2].body);
1450 hentry[2].body = tmp;
1451 }
1452 if (hentry[4].body != NULL) {
1453 tmp = conv_unmime_header(hentry[4].body, NULL, FALSE);
1454 g_free(hentry[4].body);
1455 hentry[4].body = tmp;
1456 }
1457 if (hentry[5].body != NULL) {
1458 tmp = conv_unmime_header(hentry[5].body, NULL, FALSE);
1459 g_free(hentry[5].body);
1460 hentry[5].body = tmp;
1461 }
1462 if (hentry[7].body != NULL) {
1463 tmp = conv_unmime_header(hentry[7].body, NULL, FALSE);
1464 g_free(hentry[7].body);
1465 hentry[7].body = tmp;
1466 }
1467 if (hentry[8].body != NULL) {
1468 tmp = conv_unmime_header(hentry[8].body, NULL, FALSE);
1469 g_free(hentry[8].body);
1470 hentry[8].body = tmp;
1471 }
1472
1473 content_start = ftell(fp);
1474 procmime_fclose(fp);
1475
1476 len = mimeinfo->length - (content_start - mimeinfo->offset);
1477 if (len < 0)
1478 len = 0;
1479 procmime_parse_mimepart(mimeinfo,
1480 hentry[0].body, hentry[1].body,
1481 hentry[2].body, hentry[3].body,
1482 hentry[4].body, hentry[5].body,
1483 hentry[7].body, hentry[8].body,
1484 mimeinfo->data.filename, content_start,
1485 len, short_scan);
1486
1487 for (i = 0; i < (sizeof hentry / sizeof hentry[0]); i++) {
1488 g_free(hentry[i].body);
1489 hentry[i].body = NULL;
1490 }
1491 }
1492
1493 static void procmime_parse_disposition_notification(MimeInfo *mimeinfo,
1494 const gchar *original_msgid, const gchar *disposition_notification_hdr,
1495 gboolean short_scan)
1496 {
1497 HeaderEntry hentry[] = {{"Original-Message-ID:", NULL, TRUE},
1498 {"Disposition:", NULL, TRUE},
1499 {NULL, NULL, FALSE}};
1500 guint i;
1501 FILE *fp;
1502 gchar *orig_msg_id = NULL;
1503 gchar *disp = NULL;
1504
1505 procmime_decode_content(mimeinfo);
1506
1507 debug_print("parse disposition notification\n");
1508 fp = procmime_fopen(mimeinfo->data.filename, "rb");
1509 if (fp == NULL) {
1510 FILE_OP_ERROR(mimeinfo->data.filename, "fopen");
1511 return;
1512 }
1513 fseek(fp, mimeinfo->offset, SEEK_SET);
1514
1515 if (original_msgid && disposition_notification_hdr) {
1516 hentry[0].body = g_strdup(original_msgid);
1517 hentry[1].body = g_strdup(disposition_notification_hdr);
1518 } else {
1519 procheader_get_header_fields(fp, hentry);
1520 }
1521
1522 procmime_fclose(fp);
1523
1524 if (!hentry[0].body || !hentry[1].body) {
1525 debug_print("MsgId %s, Disp %s\n",
1526 hentry[0].body ? hentry[0].body:"(nil)",
1527 hentry[1].body ? hentry[1].body:"(nil)");
1528 goto bail;
1529 }
1530
1531 orig_msg_id = g_strdup(hentry[0].body);
1532 disp = g_strdup(hentry[1].body);
1533
1534 extract_parenthesis(orig_msg_id, '<', '>');
1535 remove_space(orig_msg_id);
1536
1537 if (strstr(disp, "displayed")) {
1538 /* find sent message, if possible */
1539 MsgInfo *info = NULL;
1540 GList *flist;
1541 debug_print("%s has been displayed.\n", orig_msg_id);
1542 for (flist = folder_get_list(); flist != NULL; flist = g_list_next(flist)) {
1543 FolderItem *outbox = ((Folder *)(flist->data))->outbox;
1544 if (!outbox) {
1545 debug_print("skipping folder with no outbox...\n");
1546 continue;
1547 }
1548 info = folder_item_get_msginfo_by_msgid(outbox, orig_msg_id);
1549 debug_print("%s %s in %s\n", info?"found":"didn't find", orig_msg_id, outbox->path);
1550 if (info) {
1551 procmsg_msginfo_set_flags(info, MSG_RETRCPT_GOT, 0);
1552 procmsg_msginfo_free(info);
1553 }
1554 }
1555 }
1556 g_free(orig_msg_id);
1557 g_free(disp);
1558 bail:
1559 for (i = 0; i < (sizeof hentry / sizeof hentry[0]); i++) {
1560 g_free(hentry[i].body);
1561 hentry[i].body = NULL;
1562 }
1563 }
1564
1565 #define GET_HEADERS() { \
1566 procheader_get_header_fields(fp, hentry); \
1567 if (hentry[0].body != NULL) { \
1568 tmp = conv_unmime_header(hentry[0].body, NULL, FALSE); \
1569 g_free(hentry[0].body); \
1570 hentry[0].body = tmp; \
1571 } \
1572 if (hentry[2].body != NULL) { \
1573 tmp = conv_unmime_header(hentry[2].body, NULL, FALSE); \
1574 g_free(hentry[2].body); \
1575 hentry[2].body = tmp; \
1576 } \
1577 if (hentry[4].body != NULL) { \
1578 tmp = conv_unmime_header(hentry[4].body, NULL, FALSE); \
1579 g_free(hentry[4].body); \
1580 hentry[4].body = tmp; \
1581 } \
1582 if (hentry[5].body != NULL) { \
1583 tmp = conv_unmime_header(hentry[5].body, NULL, FALSE); \
1584 g_free(hentry[5].body); \
1585 hentry[5].body = tmp; \
1586 } \
1587 if (hentry[6].body != NULL) { \
1588 tmp = conv_unmime_header(hentry[6].body, NULL, FALSE); \
1589 g_free(hentry[6].body); \
1590 hentry[6].body = tmp; \
1591 } \
1592 if (hentry[7].body != NULL) { \
1593 tmp = conv_unmime_header(hentry[7].body, NULL, FALSE); \
1594 g_free(hentry[7].body); \
1595 hentry[7].body = tmp; \
1596 } \
1597 }
1598
1599 static void procmime_parse_multipart(MimeInfo *mimeinfo, gboolean short_scan)
1600 {
1601 HeaderEntry hentry[] = {{"Content-Type:", NULL, TRUE},
1602 {"Content-Transfer-Encoding:",
1603 NULL, FALSE},
1604 {"Content-Description:",
1605 NULL, TRUE},
1606 {"Content-ID:",
1607 NULL, TRUE},
1608 {"Content-Disposition:",
1609 NULL, TRUE},
1610 {"Content-Location:",
1611 NULL, TRUE},
1612 {"Original-Message-ID:",
1613 NULL, TRUE},
1614 {"Disposition:",
1615 NULL, TRUE},
1616 {NULL, NULL, FALSE}};
1617 gchar *p, *tmp;
1618 gchar *boundary;
1619 gint boundary_len = 0, lastoffset = -1, i;
1620 gchar buf[BUFFSIZE];
1621 FILE *fp;
1622 int result = 0;
1623 gboolean start_found = FALSE;
1624 gboolean end_found = FALSE;
1625
1626 boundary = g_hash_table_lookup(mimeinfo->typeparameters, "boundary");
1627 if (!boundary)
1628 return;
1629 boundary_len = strlen(boundary);
1630
1631 procmime_decode_content(mimeinfo);
1632
1633 fp = procmime_fopen(mimeinfo->data.filename, "rb");
1634 if (fp == NULL) {
1635 FILE_OP_ERROR(mimeinfo->data.filename, "fopen");
1636 return;
1637 }
1638
1639 fseek(fp, mimeinfo->offset, SEEK_SET);
1640 while ((p = SC_FGETS(buf, sizeof(buf), fp)) != NULL && result == 0) {
1641 if (ftell(fp) - 1 > (mimeinfo->offset + mimeinfo->length))
1642 break;
1643
1644 if (IS_BOUNDARY(buf, boundary, boundary_len)) {
1645 start_found = TRUE;
1646
1647 if (lastoffset != -1) {
1648 gint len = (ftell(fp) - strlen(buf)) - lastoffset - 1;
1649 if (len < 0)
1650 len = 0;
1651 result = procmime_parse_mimepart(mimeinfo,
1652 hentry[0].body, hentry[1].body,
1653 hentry[2].body, hentry[3].body,
1654 hentry[4].body, hentry[5].body,
1655 hentry[6].body, hentry[7].body,
1656 mimeinfo->data.filename, lastoffset,
1657 len, short_scan);
1658 if (result == 1 && short_scan)
1659 break;
1660
1661 }
1662
1663 if (buf[2 + boundary_len] == '-' &&
1664 buf[2 + boundary_len + 1] == '-') {
1665 end_found = TRUE;
1666 break;
1667 }
1668 for (i = 0; i < (sizeof hentry / sizeof hentry[0]) ; i++) {
1669 g_free(hentry[i].body);
1670 hentry[i].body = NULL;
1671 }
1672 GET_HEADERS();
1673 lastoffset = ftell(fp);
1674 }
1675 }
1676
1677 if (start_found && !end_found && lastoffset != -1) {
1678 gint len = (ftell(fp) - strlen(buf)) - lastoffset - 1;
1679
1680 if (len >= 0) {
1681 result = procmime_parse_mimepart(mimeinfo,
1682 hentry[0].body, hentry[1].body,
1683 hentry[2].body, hentry[3].body,
1684 hentry[4].body, hentry[5].body,
1685 hentry[6].body, hentry[7].body,
1686 mimeinfo->data.filename, lastoffset,
1687 len, short_scan);
1688 }
1689 mimeinfo->broken = TRUE;
1690 }
1691
1692 for (i = 0; i < (sizeof hentry / sizeof hentry[0]); i++) {
1693 g_free(hentry[i].body);
1694 hentry[i].body = NULL;
1695 }
1696 procmime_fclose(fp);
1697 }
1698
1699 static void parse_parameters(const gchar *parameters, GHashTable *table)
1700 {
1701 gchar *params, *param, *next;
1702 GSList *convlist = NULL, *concatlist = NULL, *cur;
1703
1704 params = g_strdup(parameters);
1705 param = params;
1706 next = params;
1707 for (; next != NULL; param = next) {
1708 gchar *attribute, *value, *tmp, *down_attr, *orig_down_attr;
1709 gint len;
1710 gboolean convert = FALSE;
1711
1712 next = strchr_with_skip_quote(param, '"', ';');
1713 if (next != NULL) {
1714 next[0] = '\0';
1715 next++;
1716 }
1717
1718 g_strstrip(param);
1719
1720 attribute = param;
1721 value = strchr(attribute, '=');
1722 if (value == NULL)
1723 continue;
1724
1725 value[0] = '\0';
1726 value++;
1727 while (value[0] == ' ')
1728 value++;
1729
1730 down_attr = g_utf8_strdown(attribute, -1);
1731 orig_down_attr = down_attr;
1732
1733 len = down_attr ? strlen(down_attr):0;
1734 if (len > 0 && down_attr[len - 1] == '*') {
1735 gchar *srcpos, *dstpos, *endpos;
1736
1737 convert = TRUE;
1738 down_attr[len - 1] = '\0';
1739
1740 srcpos = value;
1741 dstpos = value;
1742 endpos = value + strlen(value);
1743 while (srcpos < endpos) {
1744 if (*srcpos != '%')
1745 *dstpos = *srcpos;
1746 else {
1747 guchar dstvalue;
1748
1749 if (!get_hex_value(&dstvalue, srcpos[1], srcpos[2]))
1750 *dstpos = '?';
1751 else
1752 *dstpos = dstvalue;
1753 srcpos += 2;
1754 }
1755 srcpos++;
1756 dstpos++;
1757 }
1758 *dstpos = '\0';
1759 if (value[0] == '"')
1760 extract_quote(value, '"');
1761 } else {
1762 if (value[0] == '"')
1763 extract_quote(value, '"');
1764 else if ((tmp = strchr(value, ' ')) != NULL)
1765 *tmp = '\0';
1766 }
1767
1768 if (down_attr) {
1769 while (down_attr[0] == ' ')
1770 down_attr++;
1771 while (down_attr[strlen(down_attr)-1] == ' ')
1772 down_attr[strlen(down_attr)-1] = '\0';
1773 }
1774 if (value) {
1775 while (value[0] == ' ')
1776 value++;
1777 while (value[strlen(value)-1] == ' ')
1778 value[strlen(value)-1] = '\0';
1779 }
1780 if (down_attr && strrchr(down_attr, '*') != NULL) {
1781 gchar *tmpattr;
1782
1783 tmpattr = g_strdup(down_attr);
1784 tmp = strrchr(tmpattr, '*');
1785 tmp[0] = '\0';
1786
1787 if ((tmp[1] == '0') && (tmp[2] == '\0') &&
1788 (g_slist_find_custom(concatlist, down_attr, (GCompareFunc)g_strcmp0) == NULL))
1789 concatlist = g_slist_prepend(concatlist, g_strdup(tmpattr));
1790
1791 if (convert && (g_slist_find_custom(convlist, tmpattr, (GCompareFunc)g_strcmp0) == NULL))
1792 convlist = g_slist_prepend(convlist, g_strdup(tmpattr));
1793
1794 g_free(tmpattr);
1795 } else if (convert) {
1796 if (g_slist_find_custom(convlist, down_attr, (GCompareFunc)g_strcmp0) == NULL)
1797 convlist = g_slist_prepend(convlist, g_strdup(down_attr));
1798 }
1799
1800 if (g_hash_table_lookup(table, down_attr) == NULL)
1801 g_hash_table_insert(table, g_strdup(down_attr), g_strdup(value));
1802 g_free(orig_down_attr);
1803 }
1804
1805 for (cur = concatlist; cur != NULL; cur = g_slist_next(cur)) {
1806 gchar *attribute, *attrwnum, *partvalue;
1807 gint n = 0;
1808 GString *value;
1809
1810 attribute = (gchar *) cur->data;
1811 value = g_string_sized_new(64);
1812
1813 attrwnum = g_strdup_printf("%s*%d", attribute, n);
1814 while ((partvalue = g_hash_table_lookup(table, attrwnum)) != NULL) {
1815 g_string_append(value, partvalue);
1816
1817 g_hash_table_remove(table, attrwnum);
1818 g_free(attrwnum);
1819 n++;
1820 attrwnum = g_strdup_printf("%s*%d", attribute, n);
1821 }
1822 g_free(attrwnum);
1823
1824 g_hash_table_insert(table, g_strdup(attribute), g_strdup(value->str));
1825 g_string_free(value, TRUE);
1826 }
1827 slist_free_strings_full(concatlist);
1828
1829 for (cur = convlist; cur != NULL; cur = g_slist_next(cur)) {
1830 gchar *attribute, *key, *value;
1831 gchar *charset, *lang, *oldvalue, *newvalue;
1832
1833 attribute = (gchar *) cur->data;
1834 if (!g_hash_table_lookup_extended(
1835 table, attribute, (gpointer *)(gchar *) &key, (gpointer *)(gchar *) &value))
1836 continue;
1837
1838 charset = value;
1839 if (charset == NULL)
1840 continue;
1841 lang = strchr(charset, '\'');
1842 if (lang == NULL)
1843 continue;
1844 lang[0] = '\0';
1845 lang++;
1846 oldvalue = strchr(lang, '\'');
1847 if (oldvalue == NULL)
1848 continue;
1849 oldvalue[0] = '\0';
1850 oldvalue++;
1851
1852 newvalue = conv_codeset_strdup(oldvalue, charset, CS_UTF_8);
1853
1854 g_hash_table_remove(table, attribute);
1855 g_free(key);
1856 g_free(value);
1857
1858 g_hash_table_insert(table, g_strdup(attribute), newvalue);
1859 }
1860 slist_free_strings_full(convlist);
1861
1862 g_free(params);
1863 }
1864
1865 static void procmime_parse_content_type(const gchar *content_type, MimeInfo *mimeinfo)
1866 {
1867 cm_return_if_fail(content_type != NULL);
1868 cm_return_if_fail(mimeinfo != NULL);
1869
1870 /* RFC 2045, page 13 says that the mime subtype is MANDATORY;
1871 * if it's not available we use the default Content-Type */
1872 if ((content_type[0] == '\0') || (strchr(content_type, '/') == NULL)) {
1873 mimeinfo->type = MIMETYPE_TEXT;
1874 mimeinfo->subtype = g_strdup("plain");
1875 if (g_hash_table_lookup(mimeinfo->typeparameters,
1876 "charset") == NULL) {
1877 g_hash_table_insert(mimeinfo->typeparameters,
1878 g_strdup("charset"),
1879 g_strdup(
1880 conv_get_locale_charset_str_no_utf8()));
1881 }
1882 } else {
1883 gchar *type, *subtype, *params;
1884
1885 type = g_strdup(content_type);
1886 subtype = strchr(type, '/') + 1;
1887 *(subtype - 1) = '\0';
1888 if ((params = strchr(subtype, ';')) != NULL) {
1889 params[0] = '\0';
1890 params++;
1891 }
1892
1893 mimeinfo->type = procmime_get_media_type(type);
1894 mimeinfo->subtype = g_strstrip(g_strdup(subtype));
1895
1896 /* Get mimeinfo->typeparameters */
1897 if (params != NULL)
1898 parse_parameters(params, mimeinfo->typeparameters);
1899
1900 g_free(type);
1901 }
1902 }
1903
1904 static void procmime_parse_content_disposition(const gchar *content_disposition, MimeInfo *mimeinfo)
1905 {
1906 gchar *tmp, *params;
1907
1908 cm_return_if_fail(content_disposition != NULL);
1909 cm_return_if_fail(mimeinfo != NULL);
1910
1911 tmp = g_strdup(content_disposition);
1912 if ((params = strchr(tmp, ';')) != NULL) {
1913 params[0] = '\0';
1914 params++;
1915 }
1916 g_strstrip(tmp);
1917
1918 if (!g_ascii_strcasecmp(tmp, "inline"))
1919 mimeinfo->disposition = DISPOSITIONTYPE_INLINE;
1920 else if (!g_ascii_strcasecmp(tmp, "attachment"))
1921 mimeinfo->disposition = DISPOSITIONTYPE_ATTACHMENT;
1922 else
1923 mimeinfo->disposition = DISPOSITIONTYPE_ATTACHMENT;
1924
1925 if (params != NULL)
1926 parse_parameters(params, mimeinfo->dispositionparameters);
1927
1928 g_free(tmp);
1929 }
1930
1931
1932 static void procmime_parse_content_encoding(const gchar *content_encoding, MimeInfo *mimeinfo)
1933 {
1934 struct EncodingTable *enc_table;
1935
1936 for (enc_table = encoding_table; enc_table->str != NULL; enc_table++) {
1937 if (g_ascii_strcasecmp(enc_table->str, content_encoding) == 0) {
1938 mimeinfo->encoding_type = enc_table->enc_type;
1939 return;
1940 }
1941 }
1942 mimeinfo->encoding_type = ENC_UNKNOWN;
1943 return;
1944 }
1945
1946 static GSList *registered_parsers = NULL;
1947
1948 static MimeParser *procmime_get_mimeparser_for_type(MimeMediaType type, const gchar *sub_type)
1949 {
1950 GSList *cur;
1951 for (cur = registered_parsers; cur; cur = cur->next) {
1952 MimeParser *parser = (MimeParser *)cur->data;
1953 if (parser->type == type && !strcmp2(parser->sub_type, sub_type))
1954 return parser;
1955 }
1956 return NULL;
1957 }
1958
1959 void procmime_mimeparser_register(MimeParser *parser)
1960 {
1961 if (!procmime_get_mimeparser_for_type(parser->type, parser->sub_type))
1962 registered_parsers = g_slist_append(registered_parsers, parser);
1963 }
1964
1965
1966 void procmime_mimeparser_unregister(MimeParser *parser)
1967 {
1968 registered_parsers = g_slist_remove(registered_parsers, parser);
1969 }
1970
1971 static gboolean procmime_mimeparser_parse(MimeParser *parser, MimeInfo *mimeinfo)
1972 {
1973 cm_return_val_if_fail(parser->parse != NULL, FALSE);
1974 return parser->parse(parser, mimeinfo);
1975 }
1976
1977 static int procmime_parse_mimepart(MimeInfo *parent,
1978 gchar *content_type,
1979 gchar *content_encoding,
1980 gchar *content_description,
1981 gchar *content_id,
1982 gchar *content_disposition,
1983 gchar *content_location,
1984 const gchar *original_msgid,
1985 const gchar *disposition_notification_hdr,
1986 const gchar *filename,
1987 guint offset,
1988 guint length,
1989 gboolean short_scan)
1990 {
1991 MimeInfo *mimeinfo;
1992 MimeParser *parser = NULL;
1993 gboolean parsed = FALSE;
1994 int result = 0;
1995
1996 /* Create MimeInfo */
1997 mimeinfo = procmime_mimeinfo_new();
1998 mimeinfo->content = MIMECONTENT_FILE;
1999
2000 if (parent != NULL) {
2001 if (g_node_depth(parent->node) > 32) {
2002 /* 32 is an arbitrary value
2003 * this avoids DOSsing ourselves
2004 * with enormous messages
2005 */
2006 procmime_mimeinfo_free_all(mimeinfo);
2007 return -1;
2008 }
2009 g_node_append(parent->node, mimeinfo->node);
2010 }
2011 mimeinfo->data.filename = g_strdup(filename);
2012 mimeinfo->offset = offset;
2013 mimeinfo->length = length;
2014
2015 if (content_type != NULL) {
2016 procmime_parse_content_type(content_type, mimeinfo);
2017 } else {
2018 mimeinfo->type = MIMETYPE_TEXT;
2019 mimeinfo->subtype = g_strdup("plain");
2020 if (g_hash_table_lookup(mimeinfo->typeparameters,
2021 "charset") == NULL) {
2022 g_hash_table_insert(mimeinfo->typeparameters,
2023 g_strdup("charset"),
2024 g_strdup(
2025 conv_get_locale_charset_str_no_utf8()));
2026 }
2027 }
2028
2029 if (content_encoding != NULL) {
2030 procmime_parse_content_encoding(content_encoding, mimeinfo);
2031 } else {
2032 mimeinfo->encoding_type = ENC_UNKNOWN;
2033 }
2034
2035 if (content_description != NULL)
2036 mimeinfo->description = g_strdup(content_description);
2037 else
2038 mimeinfo->description = NULL;
2039
2040 if (content_id != NULL)
2041 mimeinfo->id = g_strdup(content_id);
2042 else
2043 mimeinfo->id = NULL;
2044
2045 if (content_location != NULL)
2046 mimeinfo->location = g_strdup(content_location);
2047 else
2048 mimeinfo->location = NULL;
2049
2050 if (content_disposition != NULL)
2051 procmime_parse_content_disposition(content_disposition, mimeinfo);
2052 else
2053 mimeinfo->disposition = DISPOSITIONTYPE_UNKNOWN;
2054
2055 /* Call parser for mime type */
2056 if ((parser = procmime_get_mimeparser_for_type(mimeinfo->type, mimeinfo->subtype)) != NULL) {
2057 parsed = procmime_mimeparser_parse(parser, mimeinfo);
2058 }
2059 if (!parsed) {
2060 switch (mimeinfo->type) {
2061 case MIMETYPE_TEXT:
2062 if (g_ascii_strcasecmp(mimeinfo->subtype, "plain") == 0 && short_scan) {
2063 return 1;
2064 }
2065 break;
2066
2067 case MIMETYPE_MESSAGE:
2068 if (g_ascii_strcasecmp(mimeinfo->subtype, "rfc822") == 0) {
2069 procmime_parse_message_rfc822(mimeinfo, short_scan);
2070 }
2071 if (g_ascii_strcasecmp(mimeinfo->subtype, "disposition-notification") == 0) {
2072 procmime_parse_disposition_notification(mimeinfo,
2073 original_msgid, disposition_notification_hdr, short_scan);
2074 }
2075 break;
2076
2077 case MIMETYPE_MULTIPART:
2078 procmime_parse_multipart(mimeinfo, short_scan);
2079 break;
2080
2081 case MIMETYPE_APPLICATION:
2082 if (g_ascii_strcasecmp(mimeinfo->subtype, "octet-stream") == 0
2083 && original_msgid && *original_msgid
2084 && disposition_notification_hdr && *disposition_notification_hdr) {
2085 procmime_parse_disposition_notification(mimeinfo,
2086 original_msgid, disposition_notification_hdr, short_scan);
2087 }
2088 break;
2089 default:
2090 break;
2091 }
2092 }
2093
2094 return result;
2095 }
2096
2097 static gchar *typenames[] = {
2098 "text",
2099 "image",
2100 "audio",
2101 "video",
2102 "application",
2103 "message",
2104 "multipart",
2105 "unknown",
2106 };
2107
2108 static gboolean output_func(GNode *node, gpointer data)
2109 {
2110 guint i, depth;
2111 MimeInfo *mimeinfo = (MimeInfo *) node->data;
2112
2113 depth = g_node_depth(node);
2114 for (i = 0; i < depth; i++)
2115 g_print(" ");
2116 g_print("%s/%s (offset:%d length:%d encoding: %d)\n", typenames[mimeinfo->type], mimeinfo->subtype, mimeinfo->offset, mimeinfo->length, mimeinfo->encoding_type);
2117
2118 return FALSE;
2119 }
2120
2121 static void output_mime_structure(MimeInfo *mimeinfo, int indent)
2122 {
2123 g_node_traverse(mimeinfo->node, G_PRE_ORDER, G_TRAVERSE_ALL, -1, output_func, NULL);
2124 }
2125
2126 static MimeInfo *procmime_scan_file_with_offset(const gchar *filename, int offset, gboolean short_scan)
2127 {
2128 MimeInfo *mimeinfo;
2129 struct stat buf;
2130
2131 g_stat(filename, &buf);
2132
2133 mimeinfo = procmime_mimeinfo_new();
2134 mimeinfo->content = MIMECONTENT_FILE;
2135 mimeinfo->encoding_type = ENC_UNKNOWN;
2136 mimeinfo->type = MIMETYPE_MESSAGE;
2137 mimeinfo->subtype = g_strdup("rfc822");
2138 mimeinfo->data.filename = g_strdup(filename);
2139 mimeinfo->offset = offset;
2140 mimeinfo->length = buf.st_size - offset;
2141
2142 procmime_parse_message_rfc822(mimeinfo, short_scan);
2143 if (debug_get_mode())
2144 output_mime_structure(mimeinfo, 0);
2145
2146 return mimeinfo;
2147 }
2148
2149 static MimeInfo *procmime_scan_file_full(const gchar *filename, gboolean short_scan)
2150 {
2151 MimeInfo *mimeinfo;
2152
2153 cm_return_val_if_fail(filename != NULL, NULL);
2154
2155 mimeinfo = procmime_scan_file_with_offset(filename, 0, short_scan);
2156
2157 return mimeinfo;
2158 }
2159
2160 MimeInfo *procmime_scan_file(const gchar *filename)
2161 {
2162 return procmime_scan_file_full(filename, FALSE);
2163 }
2164
2165 static MimeInfo *procmime_scan_file_short(const gchar *filename)
2166 {
2167 return procmime_scan_file_full(filename, TRUE);
2168 }
2169
2170 static MimeInfo *procmime_scan_queue_file_full(const gchar *filename, gboolean short_scan)
2171 {
2172 FILE *fp;
2173 MimeInfo *mimeinfo;
2174 gchar buf[BUFFSIZE];
2175 gint offset = 0;
2176
2177 cm_return_val_if_fail(filename != NULL, NULL);
2178
2179 /* Open file */
2180 if ((fp = procmime_fopen(filename, "rb")) == NULL)
2181 return NULL;
2182 /* Skip queue header */
2183 while (SC_FGETS(buf, sizeof(buf), fp) != NULL) {
2184 /* new way */
2185 if ((!strncmp(buf, "X-Claws-End-Special-Headers: 1",
2186 strlen("X-Claws-End-Special-Headers:"))) ||
2187 (!strncmp(buf, "X-Sylpheed-End-Special-Headers: 1",
2188 strlen("X-Sylpheed-End-Special-Headers:"))))
2189 break;
2190 /* old way */
2191 if (buf[0] == '\r' || buf[0] == '\n') break;
2192 /* from other mailers */
2193 if (!strncmp(buf, "Date: ", 6)
2194 || !strncmp(buf, "To: ", 4)
2195 || !strncmp(buf, "From: ", 6)
2196 || !strncmp(buf, "Subject: ", 9)) {
2197 rewind(fp);
2198 break;
2199 }
2200 }
2201 offset = ftell(fp);
2202 procmime_fclose(fp);
2203
2204 mimeinfo = procmime_scan_file_with_offset(filename, offset, short_scan);
2205
2206 return mimeinfo;
2207 }
2208
2209 MimeInfo *procmime_scan_queue_file(const gchar *filename)
2210 {
2211 return procmime_scan_queue_file_full(filename, FALSE);
2212 }
2213
2214 static MimeInfo *procmime_scan_queue_file_short(const gchar *filename)
2215 {
2216 return procmime_scan_queue_file_full(filename, TRUE);
2217 }
2218
2219 typedef enum {
2220 ENC_AS_TOKEN,
2221 ENC_AS_QUOTED_STRING,
2222 ENC_AS_EXTENDED,
2223 ENC_AS_ENCWORD
2224 } EncodeAs;
2225
2226 typedef struct _ParametersData {
2227 FILE *fp;
2228 guint len;
2229 gint error;
2230 } ParametersData;
2231
2232 static void write_parameters(gpointer key, gpointer value, gpointer user_data)
2233 {
2234 gchar *param = key;
2235 gchar *val = value, *valpos, *tmp;
2236 ParametersData *pdata = (ParametersData *)user_data;
2237 GString *buf = g_string_new("");
2238 gint len;
2239
2240 EncodeAs encas = ENC_AS_TOKEN;
2241
2242 for (valpos = val; *valpos != 0; valpos++) {
2243 if (!IS_ASCII(*valpos)) {
2244 encas = ENC_AS_ENCWORD;
2245 break;
2246 }
2247
2248 /* CTLs */
2249 if (((*valpos >= 0) && (*valpos < 037)) || (*valpos == 0177)) {
2250 encas = ENC_AS_QUOTED_STRING;
2251 continue;
2252 }
2253
2254 /* tspecials + SPACE */
2255 switch (*valpos) {
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 case ']':
2270 case '?':
2271 case '=':
2272 encas = ENC_AS_QUOTED_STRING;
2273 continue;
2274 }
2275 }
2276
2277 switch (encas) {
2278 case ENC_AS_TOKEN:
2279 g_string_append_printf(buf, "%s=%s", param, val);
2280 break;
2281
2282 case ENC_AS_QUOTED_STRING:
2283 g_string_append_printf(buf, "%s=\"%s\"", param, val);
2284 break;
2285
2286 #if 0 /* we don't use that for now */
2287 case ENC_AS_EXTENDED:
2288 if (!g_utf8_validate(val, -1, NULL))
2289 g_string_append_printf(buf, "%s*=%s''", param,
2290 conv_get_locale_charset_str());
2291 else
2292 g_string_append_printf(buf, "%s*=%s''", param,
2293 CS_INTERNAL);
2294 for (valpos = val; *valpos != '\0'; valpos++) {
2295 if (IS_ASCII(*valpos) && isalnum(*valpos)) {
2296 g_string_append_printf(buf, "%c", *valpos);
2297 } else {
2298 gchar hexstr[3] = "XX";
2299 get_hex_str(hexstr, *valpos);
2300 g_string_append_printf(buf, "%%%s", hexstr);
2301 }
2302 }
2303 break;
2304 #else
2305 case ENC_AS_EXTENDED:
2306 debug_print("Unhandled ENC_AS_EXTENDED.");
2307 break;
2308 #endif
2309 case ENC_AS_ENCWORD:
2310 len = MAX(strlen(val)*6, 512);
2311 tmp = g_malloc(len+1);
2312 codeconv_set_strict(TRUE);
2313 conv_encode_header_full(tmp, len, val, pdata->len + strlen(param) + 4 , FALSE,
2314 prefs_common.outgoing_charset);
2315 codeconv_set_strict(FALSE);
2316 if (!tmp || !*tmp) {
2317 codeconv_set_strict(TRUE);
2318 conv_encode_header_full(tmp, len, val, pdata->len + strlen(param) + 4 , FALSE,
2319 conv_get_outgoing_charset_str());
2320 codeconv_set_strict(FALSE);
2321 }
2322 if (!tmp || !*tmp) {
2323 codeconv_set_strict(TRUE);
2324 conv_encode_header_full(tmp, len, val, pdata->len + strlen(param) + 4 , FALSE,
2325 CS_UTF_8);
2326 codeconv_set_strict(FALSE);
2327 }
2328 if (!tmp || !*tmp) {
2329 conv_encode_header_full(tmp, len, val, pdata->len + strlen(param) + 4 , FALSE,
2330 CS_UTF_8);
2331 }
2332 g_string_append_printf(buf, "%s=\"%s\"", param, tmp);
2333 g_free(tmp);
2334 break;
2335
2336 }
2337
2338 if (buf->str && strlen(buf->str)) {
2339 tmp = strstr(buf->str, "\n");
2340 if (tmp)
2341 len = (tmp - buf->str);
2342 else
2343 len = strlen(buf->str);
2344 if (pdata->len + len > 76) {
2345 if (fprintf(pdata->fp, ";\n %s", buf->str) < 0)
2346 pdata->error = TRUE;
2347 pdata->len = strlen(buf->str) + 1;
2348 } else {
2349 if (fprintf(pdata->fp, "; %s", buf->str) < 0)
2350 pdata->error = TRUE;
2351 pdata->len += strlen(buf->str) + 2;
2352 }
2353 }
2354 g_string_free(buf, TRUE);
2355 }
2356
2357 #define TRY(func) { \
2358 if (!(func)) { \
2359 return -1; \
2360 } \
2361 }
2362
2363 int procmime_write_mime_header(MimeInfo *mimeinfo, FILE *fp)
2364 {
2365 struct TypeTable *type_table;
2366 ParametersData *pdata = g_new0(ParametersData, 1);
2367 debug_print("procmime_write_mime_header\n");
2368
2369 pdata->fp = fp;
2370 pdata->error = FALSE;
2371 for (type_table = mime_type_table; type_table->str != NULL; type_table++)
2372 if (mimeinfo->type == type_table->type) {
2373 gchar *buf = g_strdup_printf(
2374 "Content-Type: %s/%s", type_table->str, mimeinfo->subtype);
2375 if (fprintf(fp, "%s", buf) < 0) {
2376 g_free(buf);
2377 g_free(pdata);
2378 return -1;
2379 }
2380 pdata->len = strlen(buf);
2381 g_free(buf);
2382 break;
2383 }
2384 g_hash_table_foreach(mimeinfo->typeparameters, write_parameters, pdata);
2385 if (pdata->error == TRUE) {
2386 g_free(pdata);
2387 return -1;
2388 }
2389 g_free(pdata);
2390
2391 TRY(fprintf(fp, "\n") >= 0);
2392
2393 if (mimeinfo->encoding_type != ENC_UNKNOWN)
2394 TRY(fprintf(fp, "Content-Transfer-Encoding: %s\n", procmime_get_encoding_str(mimeinfo->encoding_type)) >= 0);
2395
2396 if (mimeinfo->description != NULL)
2397 TRY(fprintf(fp, "Content-Description: %s\n", mimeinfo->description) >= 0);
2398
2399 if (mimeinfo->id != NULL)
2400 TRY(fprintf(fp, "Content-ID: %s\n", mimeinfo->id) >= 0);
2401
2402 if (mimeinfo->location != NULL)
2403 TRY(fprintf(fp, "Content-Location: %s\n", mimeinfo->location) >= 0);
2404
2405 if (mimeinfo->disposition != DISPOSITIONTYPE_UNKNOWN) {
2406 ParametersData *pdata = g_new0(ParametersData, 1);
2407 gchar *buf = NULL;
2408 if (mimeinfo->disposition == DISPOSITIONTYPE_INLINE)
2409 buf = g_strdup("Content-Disposition: inline");
2410 else if (mimeinfo->disposition == DISPOSITIONTYPE_ATTACHMENT)
2411 buf = g_strdup("Content-Disposition: attachment");
2412 else
2413 buf = g_strdup("Content-Disposition: unknown");
2414
2415 if (fprintf(fp, "%s", buf) < 0) {
2416 g_free(buf);
2417 g_free(pdata);
2418 return -1;
2419 }
2420 pdata->len = strlen(buf);
2421 g_free(buf);
2422
2423 pdata->fp = fp;
2424 pdata->error = FALSE;
2425 g_hash_table_foreach(mimeinfo->dispositionparameters, write_parameters, pdata);
2426 if (pdata->error == TRUE) {
2427 g_free(pdata);
2428 return -1;
2429 }
2430 g_free(pdata);
2431 TRY(fprintf(fp, "\n") >= 0);
2432 }
2433
2434 TRY(fprintf(fp, "\n") >= 0);
2435
2436 return 0;
2437 }
2438
2439 static gint procmime_write_message_rfc822(MimeInfo *mimeinfo, FILE *fp)
2440 {
2441 FILE *infp;
2442 GNode *childnode;
2443 MimeInfo *child;
2444 gchar buf[BUFFSIZE];
2445 gboolean skip = FALSE;;
2446 size_t len;
2447
2448 debug_print("procmime_write_message_rfc822\n");
2449
2450 /* write header */
2451 switch (mimeinfo->content) {
2452 case MIMECONTENT_FILE:
2453 if ((infp = procmime_fopen(mimeinfo->data.filename, "rb")) == NULL) {
2454 FILE_OP_ERROR(mimeinfo->data.filename, "fopen");
2455 return -1;
2456 }
2457 fseek(infp, mimeinfo->offset, SEEK_SET);
2458 while (SC_FGETS(buf, sizeof(buf), infp) == buf) {
2459 strcrchomp(buf);
2460 if (buf[0] == '\n' && buf[1] == '\0')
2461 break;
2462 if (skip && (buf[0] == ' ' || buf[0] == '\t'))
2463 continue;
2464 if (g_ascii_strncasecmp(buf, "Mime-Version:", 13) == 0 ||
2465 g_ascii_strncasecmp(buf, "Content-Type:", 13) == 0 ||
2466 g_ascii_strncasecmp(buf, "Content-Transfer-Encoding:", 26) == 0 ||
2467 g_ascii_strncasecmp(buf, "Content-Description:", 20) == 0 ||
2468 g_ascii_strncasecmp(buf, "Content-ID:", 11) == 0 ||
2469 g_ascii_strncasecmp(buf, "Content-Location:", 17) == 0 ||
2470 g_ascii_strncasecmp(buf, "Content-Disposition:", 20) == 0) {
2471 skip = TRUE;
2472 continue;
2473 }
2474 len = strlen(buf);
2475 if (SC_FWRITE(buf, sizeof(gchar), len, fp) < len) {
2476 g_warning("failed to dump %zd bytes from file", len);
2477 procmime_fclose(infp);
2478 return -1;
2479 }
2480 skip = FALSE;
2481 }
2482 procmime_fclose(infp);
2483 break;
2484
2485 case MIMECONTENT_MEM:
2486 len = strlen(mimeinfo->data.mem);
2487 if (SC_FWRITE(mimeinfo->data.mem, sizeof(gchar), len, fp) < len) {
2488 g_warning("failed to dump %zd bytes from mem", len);
2489 return -1;
2490 }
2491 break;
2492
2493 default:
2494 break;
2495 }
2496
2497 childnode = mimeinfo->node->children;
2498 if (childnode == NULL)
2499 return -1;
2500
2501 child = (MimeInfo *) childnode->data;
2502 if (fprintf(fp, "Mime-Version: 1.0\n") < 0) {
2503 g_warning("failed to write mime version");
2504 return -1;
2505 }
2506 if (procmime_write_mime_header(child, fp) < 0)
2507 return -1;
2508 return procmime_write_mimeinfo(child, fp);
2509 }
2510
2511 static gint procmime_write_multipart(MimeInfo *mimeinfo, FILE *fp)
2512 {
2513 FILE *infp;
2514 GNode *childnode;
2515 gchar *boundary, *str, *str2;
2516 gchar buf[BUFFSIZE];
2517 gboolean firstboundary;
2518 size_t len;
2519
2520 debug_print("procmime_write_multipart\n");
2521
2522 boundary = g_hash_table_lookup(mimeinfo->typeparameters, "boundary");
2523
2524 switch (mimeinfo->content) {
2525 case MIMECONTENT_FILE:
2526 if ((infp = procmime_fopen(mimeinfo->data.filename, "rb")) == NULL) {
2527 FILE_OP_ERROR(mimeinfo->data.filename, "fopen");
2528 return -1;
2529 }
2530 fseek(infp, mimeinfo->offset, SEEK_SET);
2531 while (SC_FGETS(buf, sizeof(buf), infp) == buf) {
2532 if (IS_BOUNDARY(buf, boundary, strlen(boundary)))
2533 break;
2534 len = strlen(buf);
2535 if (SC_FWRITE(buf, sizeof(gchar), len, fp) < len) {
2536 g_warning("failed to write %zd", len);
2537 procmime_fclose(infp);
2538 return -1;
2539 }
2540 }
2541 procmime_fclose(infp);
2542 break;
2543
2544 case MIMECONTENT_MEM:
2545 str = g_strdup(mimeinfo->data.mem);
2546 if (((str2 = strstr(str, boundary)) != NULL) && ((str2 - str) >= 2) &&
2547 (*(str2 - 1) == '-') && (*(str2 - 2) == '-'))
2548 *(str2 - 2) = '\0';
2549 len = strlen(str);
2550 if (SC_FWRITE(str, sizeof(gchar), len, fp) < len) {
2551 g_warning("failed to write %zd from mem", len);
2552 g_free(str);
2553 return -1;
2554 }
2555 g_free(str);
2556 break;
2557
2558 default:
2559 break;
2560 }
2561
2562 childnode = mimeinfo->node->children;
2563 firstboundary = TRUE;
2564 while (childnode != NULL) {
2565 MimeInfo *child = childnode->data;
2566
2567 if (firstboundary)
2568 firstboundary = FALSE;
2569 else
2570 TRY(fprintf(fp, "\n") >= 0);
2571
2572 TRY(fprintf(fp, "--%s\n", boundary) >= 0);
2573
2574 if (procmime_write_mime_header(child, fp) < 0)
2575 return -1;
2576 if (procmime_write_mimeinfo(child, fp) < 0)
2577 return -1;
2578
2579 childnode = g_node_next_sibling(childnode);
2580 }
2581 TRY(fprintf(fp, "\n--%s--\n", boundary) >= 0);
2582
2583 return 0;
2584 }
2585
2586 gint procmime_write_mimeinfo(MimeInfo *mimeinfo, FILE *fp)
2587 {
2588 FILE *infp;
2589 size_t len;
2590 debug_print("procmime_write_mimeinfo\n");
2591
2592 if (G_NODE_IS_LEAF(mimeinfo->node)) {
2593 switch (mimeinfo->content) {
2594 case MIMECONTENT_FILE:
2595 if ((infp = procmime_fopen(mimeinfo->data.filename, "rb")) == NULL) {
2596 FILE_OP_ERROR(mimeinfo->data.filename, "fopen");
2597 return -1;
2598 }
2599 copy_file_part_to_fp(infp, mimeinfo->offset, mimeinfo->length, fp);
2600 procmime_fclose(infp);
2601 return 0;
2602
2603 case MIMECONTENT_MEM:
2604 len = strlen(mimeinfo->data.mem);
2605 if (SC_FWRITE(mimeinfo->data.mem, sizeof(gchar), len, fp) < len)
2606 return -1;
2607 return 0;
2608
2609 default:
2610 return 0;
2611 }
2612 } else {
2613 /* Call writer for mime type */
2614 switch (mimeinfo->type) {
2615 case MIMETYPE_MESSAGE:
2616 if (g_ascii_strcasecmp(mimeinfo->subtype, "rfc822") == 0) {
2617 return procmime_write_message_rfc822(mimeinfo, fp);
2618 }
2619 break;
2620
2621 case MIMETYPE_MULTIPART:
2622 return procmime_write_multipart(mimeinfo, fp);
2623
2624 default:
2625 break;
2626 }
2627
2628 return -1;
2629 }
2630
2631 return 0;
2632 }
2633
2634 gchar *procmime_get_part_file_name(MimeInfo *mimeinfo)
2635 {
2636 gchar *base;
2637
2638 if ((mimeinfo->type == MIMETYPE_TEXT) && !g_ascii_strcasecmp(mimeinfo->subtype, "html"))
2639 base = g_strdup("mimetmp.html");
2640 else {
2641 const gchar *basetmp;
2642 gchar *basename;
2643
2644 basetmp = procmime_mimeinfo_get_parameter(mimeinfo, "filename");
2645 if (basetmp == NULL)
2646 basetmp = procmime_mimeinfo_get_parameter(mimeinfo, "name");
2647 if (basetmp == NULL)
2648 basetmp = "mimetmp";
2649 basename = g_path_get_basename(basetmp);
2650 if (*basename == '\0') {
2651 g_free(basename);
2652 basename = g_strdup("mimetmp");
2653 }
2654 base = conv_filename_from_utf8(basename);
2655 g_free(basename);
2656 subst_for_shellsafe_filename(base);
2657 }
2658
2659 return base;
2660 }
2661