1 /*
2 * Claws Mail -- a GTK+ based, lightweight, and fast e-mail client
3 * Copyright (C) 1999-2020 the Claws Mail Team and Hiroyuki Yamamoto
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 3 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
17 */
18
19 #ifdef HAVE_CONFIG_H
20 # include "config.h"
21 #include "claws-features.h"
22 #endif
23
24 #include <stdio.h>
25
26 #include "defs.h"
27
28 #include <glib.h>
29 #include <glib/gi18n.h>
30 #include <string.h>
31 #if HAVE_LOCALE_H
32 # include <locale.h>
33 #endif
34 #include <ctype.h>
35 #include <sys/types.h>
36 #include <sys/stat.h>
37 #include <unistd.h>
38 #include <errno.h>
39
40 #include "procmime.h"
41 #include "procheader.h"
42 #include "quoted-printable.h"
43 #include "uuencode.h"
44 #include "unmime.h"
45 #include "html.h"
46 #include "enriched.h"
47 #include "codeconv.h"
48 #include "utils.h"
49 #include "prefs_common.h"
50 #include "prefs_gtk.h"
51 #include "alertpanel.h"
52 #include "timing.h"
53 #include "privacy.h"
54 #include "account.h"
55 #include "file-utils.h"
56
57 static GHashTable *procmime_get_mime_type_table (void);
58 static MimeInfo *procmime_scan_file_short(const gchar *filename);
59 static MimeInfo *procmime_scan_queue_file_short(const gchar *filename);
60 static MimeInfo *procmime_scan_queue_file_full(const gchar *filename, gboolean short_scan);
61
procmime_mimeinfo_new(void)62 MimeInfo *procmime_mimeinfo_new(void)
63 {
64 MimeInfo *mimeinfo;
65
66 mimeinfo = g_new0(MimeInfo, 1);
67
68 mimeinfo->content = MIMECONTENT_EMPTY;
69 mimeinfo->data.filename = NULL;
70
71 mimeinfo->type = MIMETYPE_UNKNOWN;
72 mimeinfo->encoding_type = ENC_UNKNOWN;
73 mimeinfo->typeparameters = g_hash_table_new(g_str_hash, g_str_equal);
74
75 mimeinfo->disposition = DISPOSITIONTYPE_UNKNOWN;
76 mimeinfo->dispositionparameters
77 = g_hash_table_new(g_str_hash, g_str_equal);
78
79 mimeinfo->node = g_node_new(mimeinfo);
80
81 return mimeinfo;
82 }
83
procmime_mimeinfo_parameters_destroy(gpointer key,gpointer value,gpointer user_data)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
procmime_force_charset(const gchar * str)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
procmime_force_encoding(EncodingType encoding)104 void procmime_force_encoding(EncodingType encoding)
105 {
106 forced_encoding = encoding;
107 }
108
free_func(GNode * node,gpointer data)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
procmime_mimeinfo_free_all(MimeInfo ** mimeinfo_ptr)147 void procmime_mimeinfo_free_all(MimeInfo **mimeinfo_ptr)
148 {
149 MimeInfo *mimeinfo = *mimeinfo_ptr;
150 GNode *node;
151
152 if (!mimeinfo)
153 return;
154
155 node = mimeinfo->node;
156 g_node_traverse(node, G_IN_ORDER, G_TRAVERSE_ALL, -1, free_func, NULL);
157
158 g_node_destroy(node);
159
160 *mimeinfo_ptr = NULL;
161 }
162
procmime_mimeinfo_parent(MimeInfo * mimeinfo)163 MimeInfo *procmime_mimeinfo_parent(MimeInfo *mimeinfo)
164 {
165 cm_return_val_if_fail(mimeinfo != NULL, NULL);
166 cm_return_val_if_fail(mimeinfo->node != NULL, NULL);
167
168 if (mimeinfo->node->parent == NULL)
169 return NULL;
170 return (MimeInfo *) mimeinfo->node->parent->data;
171 }
172
procmime_mimeinfo_next(MimeInfo * mimeinfo)173 MimeInfo *procmime_mimeinfo_next(MimeInfo *mimeinfo)
174 {
175 cm_return_val_if_fail(mimeinfo != NULL, NULL);
176 cm_return_val_if_fail(mimeinfo->node != NULL, NULL);
177
178 if (mimeinfo->node->children)
179 return (MimeInfo *) mimeinfo->node->children->data;
180 if (mimeinfo->node->next)
181 return (MimeInfo *) mimeinfo->node->next->data;
182
183 if (mimeinfo->node->parent == NULL)
184 return NULL;
185
186 while (mimeinfo->node->parent != NULL) {
187 mimeinfo = (MimeInfo *) mimeinfo->node->parent->data;
188 if (mimeinfo->node->next)
189 return (MimeInfo *) mimeinfo->node->next->data;
190 }
191
192 return NULL;
193 }
194
procmime_scan_message(MsgInfo * msginfo)195 MimeInfo *procmime_scan_message(MsgInfo *msginfo)
196 {
197 gchar *filename;
198 MimeInfo *mimeinfo;
199
200 filename = procmsg_get_message_file_path(msginfo);
201 if (!filename || !is_file_exist(filename)) {
202 g_free(filename);
203 return NULL;
204 }
205
206 if (!folder_has_parent_of_type(msginfo->folder, F_QUEUE) &&
207 !folder_has_parent_of_type(msginfo->folder, F_DRAFT))
208 mimeinfo = procmime_scan_file(filename);
209 else
210 mimeinfo = procmime_scan_queue_file(filename);
211 g_free(filename);
212
213 return mimeinfo;
214 }
215
procmime_scan_message_short(MsgInfo * msginfo)216 MimeInfo *procmime_scan_message_short(MsgInfo *msginfo)
217 {
218 gchar *filename;
219 MimeInfo *mimeinfo;
220
221 filename = procmsg_get_message_file_path(msginfo);
222 if (!filename || !is_file_exist(filename)) {
223 g_free(filename);
224 return NULL;
225 }
226
227 if (!folder_has_parent_of_type(msginfo->folder, F_QUEUE) &&
228 !folder_has_parent_of_type(msginfo->folder, F_DRAFT))
229 mimeinfo = procmime_scan_file_short(filename);
230 else
231 mimeinfo = procmime_scan_queue_file_short(filename);
232 g_free(filename);
233
234 return mimeinfo;
235 }
236
237 enum
238 {
239 H_CONTENT_TRANSFER_ENCODING = 0,
240 H_CONTENT_TYPE = 1,
241 H_CONTENT_DISPOSITION = 2,
242 H_CONTENT_DESCRIPTION = 3,
243 H_SUBJECT = 4
244 };
245
procmime_mimeinfo_get_parameter(MimeInfo * mimeinfo,const gchar * name)246 const gchar *procmime_mimeinfo_get_parameter(MimeInfo *mimeinfo, const gchar *name)
247 {
248 const gchar *value;
249
250 cm_return_val_if_fail(mimeinfo != NULL, NULL);
251 cm_return_val_if_fail(name != NULL, NULL);
252
253 value = g_hash_table_lookup(mimeinfo->dispositionparameters, name);
254 if (value == NULL)
255 value = g_hash_table_lookup(mimeinfo->typeparameters, name);
256
257 return value;
258 }
259
260 #define FLUSH_LASTLINE() { \
261 if (*lastline != '\0') { \
262 gint llen = 0; \
263 strretchomp(lastline); \
264 llen = strlen(lastline); \
265 if (lastline[llen-1] == ' ' && !account_sigsep_matchlist_str_found(lastline, "%s") && \
266 !(llen == 2 && lastline[1] == ' ' && strchr(prefs_common.quote_chars, lastline[0]))) { \
267 /* this is flowed */ \
268 if (delsp) \
269 lastline[llen-1] = '\0'; \
270 if (claws_fputs(lastline, outfp) == EOF) \
271 err = TRUE; \
272 } else { \
273 if (claws_fputs(lastline, outfp) == EOF) \
274 err = TRUE; \
275 if (claws_fputs("\n", outfp) == EOF) \
276 err = TRUE; \
277 } \
278 } \
279 strcpy(lastline, buf); \
280 }
281
procmime_decode_content(MimeInfo * mimeinfo)282 gboolean procmime_decode_content(MimeInfo *mimeinfo)
283 {
284 gchar buf[BUFFSIZE];
285 gint readend;
286 gchar *tmpfilename;
287 FILE *outfp, *infp;
288 GStatBuf statbuf;
289 gboolean tmp_file = FALSE;
290 gboolean flowed = FALSE;
291 gboolean delsp = FALSE;
292 gboolean err = FALSE;
293 gint state = 0;
294 guint save = 0;
295
296 cm_return_val_if_fail(mimeinfo != NULL, FALSE);
297
298 EncodingType encoding = forced_encoding
299 ? forced_encoding
300 : mimeinfo->encoding_type;
301 gchar lastline[BUFFSIZE];
302 memset(lastline, 0, BUFFSIZE);
303
304 if (prefs_common.respect_flowed_format &&
305 mimeinfo->type == MIMETYPE_TEXT &&
306 !strcasecmp(mimeinfo->subtype, "plain")) {
307 if (procmime_mimeinfo_get_parameter(mimeinfo, "format") != NULL &&
308 !strcasecmp(procmime_mimeinfo_get_parameter(mimeinfo, "format"),"flowed"))
309 flowed = TRUE;
310 if (flowed &&
311 procmime_mimeinfo_get_parameter(mimeinfo, "delsp") != NULL &&
312 !strcasecmp(procmime_mimeinfo_get_parameter(mimeinfo, "delsp"),"yes"))
313 delsp = TRUE;
314 }
315
316 if (!flowed && (
317 encoding == ENC_UNKNOWN ||
318 encoding == ENC_BINARY ||
319 encoding == ENC_7BIT ||
320 encoding == ENC_8BIT
321 ))
322 return TRUE;
323
324 if (mimeinfo->type == MIMETYPE_MULTIPART || mimeinfo->type == MIMETYPE_MESSAGE)
325 return TRUE;
326
327 if (mimeinfo->data.filename == NULL)
328 return FALSE;
329
330 infp = claws_fopen(mimeinfo->data.filename, "rb");
331 if (!infp) {
332 FILE_OP_ERROR(mimeinfo->data.filename, "claws_fopen");
333 return FALSE;
334 }
335 if (fseek(infp, mimeinfo->offset, SEEK_SET) < 0) {
336 FILE_OP_ERROR(mimeinfo->data.filename, "fseek");
337 claws_fclose(infp);
338 return FALSE;
339 }
340
341 outfp = get_tmpfile_in_dir(get_mime_tmp_dir(), &tmpfilename);
342 if (!outfp) {
343 perror("tmpfile");
344 claws_fclose(infp);
345 return FALSE;
346 }
347
348 tmp_file = TRUE;
349 readend = mimeinfo->offset + mimeinfo->length;
350
351 account_sigsep_matchlist_create(); /* FLUSH_LASTLINE will use it */
352
353 *buf = '\0';
354 if (encoding == ENC_QUOTED_PRINTABLE) {
355 while ((ftell(infp) < readend) && (claws_fgets(buf, sizeof(buf), infp) != NULL)) {
356 gint len;
357 len = qp_decode_line(buf);
358 buf[len] = '\0';
359 if (!flowed) {
360 if (claws_fwrite(buf, 1, len, outfp) < len)
361 err = TRUE;
362 } else {
363 FLUSH_LASTLINE();
364 }
365 }
366 if (flowed)
367 FLUSH_LASTLINE();
368 } else if (encoding == ENC_BASE64) {
369 gchar outbuf[BUFFSIZE + 1];
370 gint len, inlen, inread;
371 gboolean got_error = FALSE;
372 gboolean uncanonicalize = FALSE;
373 FILE *tmpfp = NULL;
374 gboolean null_bytes = FALSE;
375 gboolean starting = TRUE;
376
377 if (mimeinfo->type == MIMETYPE_TEXT ||
378 mimeinfo->type == MIMETYPE_MESSAGE) {
379 uncanonicalize = TRUE;
380 tmpfp = my_tmpfile();
381 if (!tmpfp) {
382 perror("my_tmpfile");
383 if (tmp_file)
384 claws_fclose(outfp);
385 claws_fclose(infp);
386 return FALSE;
387 }
388 } else
389 tmpfp = outfp;
390
391 while ((inlen = MIN(readend - ftell(infp), sizeof(buf))) > 0 && !err) {
392 inread = claws_fread(buf, 1, inlen, infp);
393 memset(outbuf, 0, sizeof(buf));
394 len = g_base64_decode_step(buf, inlen, outbuf, &state, &save);
395 if (uncanonicalize == TRUE && strlen(outbuf) < len && starting) {
396 uncanonicalize = FALSE;
397 null_bytes = TRUE;
398 }
399 starting = FALSE;
400 if (((inread != inlen) || len < 0) && !got_error) {
401 g_warning("Bad BASE64 content.");
402 if (claws_fwrite(_("[Error decoding BASE64]\n"),
403 sizeof(gchar),
404 strlen(_("[Error decoding BASE64]\n")),
405 tmpfp) < strlen(_("[Error decoding BASE64]\n")))
406 g_warning("error decoding BASE64");
407 got_error = TRUE;
408 continue;
409 } else if (len >= 0) {
410 /* print out the error message only once
411 * per block */
412 if (null_bytes) {
413 /* we won't uncanonicalize, output to outfp directly */
414 if (claws_fwrite(outbuf, sizeof(gchar), len, outfp) < len)
415 err = TRUE;
416 } else {
417 if (claws_fwrite(outbuf, sizeof(gchar), len, tmpfp) < len)
418 err = TRUE;
419 }
420 got_error = FALSE;
421 }
422 }
423
424 if (uncanonicalize) {
425 rewind(tmpfp);
426 while (claws_fgets(buf, sizeof(buf), tmpfp) != NULL) {
427 strcrchomp(buf);
428 if (claws_fputs(buf, outfp) == EOF)
429 err = TRUE;
430 }
431 }
432 if (tmpfp != outfp) {
433 claws_fclose(tmpfp);
434 }
435 } else if (encoding == ENC_X_UUENCODE) {
436 gchar outbuf[BUFFSIZE];
437 gint len;
438 gboolean flag = FALSE;
439
440 while ((ftell(infp) < readend) && (claws_fgets(buf, sizeof(buf), infp) != NULL)) {
441 if (!flag && strncmp(buf,"begin ", 6)) continue;
442
443 if (flag) {
444 len = fromuutobits(outbuf, buf);
445 if (len <= 0) {
446 if (len < 0)
447 g_warning("Bad UUENCODE content (%d)", len);
448 break;
449 }
450 if (claws_fwrite(outbuf, sizeof(gchar), len, outfp) < len)
451 err = TRUE;
452 } else
453 flag = TRUE;
454 }
455 } else {
456 while ((ftell(infp) < readend) && (claws_fgets(buf, sizeof(buf), infp) != NULL)) {
457 if (!flowed) {
458 if (claws_fputs(buf, outfp) == EOF)
459 err = TRUE;
460 } else {
461 FLUSH_LASTLINE();
462 }
463 }
464 if (flowed)
465 FLUSH_LASTLINE();
466 if (err == TRUE)
467 g_warning("write error");
468 }
469
470 claws_fclose(outfp);
471 claws_fclose(infp);
472
473 account_sigsep_matchlist_delete();
474
475 if (err == TRUE) {
476 return FALSE;
477 }
478
479 if (g_stat(tmpfilename, &statbuf) < 0) {
480 FILE_OP_ERROR(tmpfilename, "stat");
481 return FALSE;
482 }
483
484 if (mimeinfo->tmp)
485 claws_unlink(mimeinfo->data.filename);
486 g_free(mimeinfo->data.filename);
487 mimeinfo->data.filename = tmpfilename;
488 mimeinfo->tmp = TRUE;
489 mimeinfo->offset = 0;
490 mimeinfo->length = statbuf.st_size;
491 mimeinfo->encoding_type = ENC_BINARY;
492
493 return TRUE;
494 }
495
496 #define B64_LINE_SIZE 57
497 #define B64_BUFFSIZE 77
498
procmime_encode_content(MimeInfo * mimeinfo,EncodingType encoding)499 gboolean procmime_encode_content(MimeInfo *mimeinfo, EncodingType encoding)
500 {
501 FILE *infp = NULL, *outfp;
502 gint len;
503 gchar *tmpfilename;
504 GStatBuf statbuf;
505 gboolean err = FALSE;
506
507 if (mimeinfo->content == MIMECONTENT_EMPTY)
508 return TRUE;
509
510 if (mimeinfo->encoding_type != ENC_UNKNOWN &&
511 mimeinfo->encoding_type != ENC_BINARY &&
512 mimeinfo->encoding_type != ENC_7BIT &&
513 mimeinfo->encoding_type != ENC_8BIT)
514 if(!procmime_decode_content(mimeinfo))
515 return FALSE;
516
517 outfp = get_tmpfile_in_dir(get_mime_tmp_dir(), &tmpfilename);
518 if (!outfp) {
519 perror("tmpfile");
520 return FALSE;
521 }
522
523 if (mimeinfo->content == MIMECONTENT_FILE && mimeinfo->data.filename) {
524 if ((infp = claws_fopen(mimeinfo->data.filename, "rb")) == NULL) {
525 g_warning("Can't open file %s", mimeinfo->data.filename);
526 claws_fclose(outfp);
527 return FALSE;
528 }
529 } else if (mimeinfo->content == MIMECONTENT_MEM) {
530 infp = str_open_as_stream(mimeinfo->data.mem);
531 if (infp == NULL) {
532 claws_fclose(outfp);
533 return FALSE;
534 }
535 } else {
536 claws_fclose(outfp);
537 g_warning("Unknown mimeinfo");
538 return FALSE;
539 }
540
541 if (encoding == ENC_BASE64) {
542 gchar inbuf[B64_LINE_SIZE], *out;
543 FILE *tmp_fp = infp;
544 gchar *tmp_file = NULL;
545
546 if (mimeinfo->type == MIMETYPE_TEXT ||
547 mimeinfo->type == MIMETYPE_MESSAGE) {
548 if (mimeinfo->content == MIMECONTENT_FILE) {
549 tmp_file = get_tmp_file();
550 if (canonicalize_file(mimeinfo->data.filename, tmp_file) < 0) {
551 g_free(tmp_file);
552 claws_fclose(infp);
553 claws_fclose(outfp);
554 return FALSE;
555 }
556 if ((tmp_fp = claws_fopen(tmp_file, "rb")) == NULL) {
557 FILE_OP_ERROR(tmp_file, "claws_fopen");
558 claws_unlink(tmp_file);
559 g_free(tmp_file);
560 claws_fclose(infp);
561 claws_fclose(outfp);
562 return FALSE;
563 }
564 } else {
565 gchar *out = canonicalize_str(mimeinfo->data.mem);
566 claws_fclose(infp);
567 infp = str_open_as_stream(out);
568 tmp_fp = infp;
569 g_free(out);
570 if (infp == NULL) {
571 claws_fclose(outfp);
572 return FALSE;
573 }
574 }
575 }
576
577 while ((len = claws_fread(inbuf, sizeof(gchar),
578 B64_LINE_SIZE, tmp_fp))
579 == B64_LINE_SIZE) {
580 out = g_base64_encode(inbuf, B64_LINE_SIZE);
581 if (claws_fputs(out, outfp) == EOF)
582 err = TRUE;
583 g_free(out);
584 if (claws_fputc('\n', outfp) == EOF)
585 err = TRUE;
586 }
587 if (len > 0 && claws_feof(tmp_fp)) {
588 out = g_base64_encode(inbuf, len);
589 if (claws_fputs(out, outfp) == EOF)
590 err = TRUE;
591 g_free(out);
592 if (claws_fputc('\n', outfp) == EOF)
593 err = TRUE;
594 }
595
596 if (tmp_file) {
597 claws_fclose(tmp_fp);
598 claws_unlink(tmp_file);
599 g_free(tmp_file);
600 }
601 } else if (encoding == ENC_QUOTED_PRINTABLE) {
602 gchar inbuf[BUFFSIZE], outbuf[BUFFSIZE * 4];
603
604 while (claws_fgets(inbuf, sizeof(inbuf), infp) != NULL) {
605 qp_encode_line(outbuf, inbuf);
606
607 if (!strncmp("From ", outbuf, sizeof("From ")-1)) {
608 gchar *tmpbuf = outbuf;
609
610 tmpbuf += sizeof("From ")-1;
611
612 if (claws_fputs("=46rom ", outfp) == EOF)
613 err = TRUE;
614 if (claws_fputs(tmpbuf, outfp) == EOF)
615 err = TRUE;
616 } else {
617 if (claws_fputs(outbuf, outfp) == EOF)
618 err = TRUE;
619 }
620 }
621 } else {
622 gchar buf[BUFFSIZE];
623
624 while (claws_fgets(buf, sizeof(buf), infp) != NULL) {
625 strcrchomp(buf);
626 if (claws_fputs(buf, outfp) == EOF)
627 err = TRUE;
628 }
629 }
630
631 claws_fclose(outfp);
632 claws_fclose(infp);
633
634 if (err == TRUE)
635 return FALSE;
636
637 if (mimeinfo->content == MIMECONTENT_FILE) {
638 if (mimeinfo->tmp && (mimeinfo->data.filename != NULL))
639 claws_unlink(mimeinfo->data.filename);
640 g_free(mimeinfo->data.filename);
641 } else if (mimeinfo->content == MIMECONTENT_MEM) {
642 if (mimeinfo->tmp && (mimeinfo->data.mem != NULL))
643 g_free(mimeinfo->data.mem);
644 }
645
646 if (g_stat(tmpfilename, &statbuf) < 0) {
647 FILE_OP_ERROR(tmpfilename, "stat");
648 return FALSE;
649 }
650 mimeinfo->content = MIMECONTENT_FILE;
651 mimeinfo->data.filename = tmpfilename;
652 mimeinfo->tmp = TRUE;
653 mimeinfo->offset = 0;
654 mimeinfo->length = statbuf.st_size;
655 mimeinfo->encoding_type = encoding;
656
657 return TRUE;
658 }
659
procmime_get_part_to_stream(FILE * outfp,MimeInfo * mimeinfo)660 static gint procmime_get_part_to_stream(FILE *outfp, MimeInfo *mimeinfo)
661 {
662 FILE *infp;
663 gchar buf[BUFFSIZE];
664 gint restlength, readlength;
665 gint saved_errno = 0;
666
667 cm_return_val_if_fail(outfp != NULL, -1);
668 cm_return_val_if_fail(mimeinfo != NULL, -1);
669
670 if (mimeinfo->encoding_type != ENC_BINARY && !procmime_decode_content(mimeinfo))
671 return -EINVAL;
672
673 if ((infp = claws_fopen(mimeinfo->data.filename, "rb")) == NULL) {
674 saved_errno = errno;
675 FILE_OP_ERROR(mimeinfo->data.filename, "claws_fopen");
676 return -(saved_errno);
677 }
678 if (fseek(infp, mimeinfo->offset, SEEK_SET) < 0) {
679 saved_errno = errno;
680 FILE_OP_ERROR(mimeinfo->data.filename, "fseek");
681 claws_fclose(infp);
682 return -(saved_errno);
683 }
684
685 restlength = mimeinfo->length;
686
687 while ((restlength > 0) && ((readlength = claws_fread(buf, 1, restlength > BUFFSIZE ? BUFFSIZE : restlength, infp)) > 0)) {
688 if (claws_fwrite(buf, 1, readlength, outfp) != readlength) {
689 saved_errno = errno;
690 claws_fclose(infp);
691 return -(saved_errno);
692 }
693 restlength -= readlength;
694 }
695
696 claws_fclose(infp);
697 rewind(outfp);
698
699 return 0;
700 }
701
procmime_get_part(const gchar * outfile,MimeInfo * mimeinfo)702 gint procmime_get_part(const gchar *outfile, MimeInfo *mimeinfo)
703 {
704 FILE *outfp;
705 gint result;
706 gint saved_errno = 0;
707
708 cm_return_val_if_fail(outfile != NULL, -1);
709
710 if ((outfp = claws_fopen(outfile, "wb")) == NULL) {
711 saved_errno = errno;
712 FILE_OP_ERROR(outfile, "claws_fopen");
713 return -(saved_errno);
714 }
715
716 result = procmime_get_part_to_stream(outfp, mimeinfo);
717
718 if (claws_fclose(outfp) == EOF) {
719 saved_errno = errno;
720 FILE_OP_ERROR(outfile, "claws_fclose");
721 claws_unlink(outfile);
722 return -(saved_errno);
723 }
724
725 return result;
726 }
727
procmime_scan_text_content(MimeInfo * mimeinfo,gboolean (* scan_callback)(const gchar * str,gpointer cb_data),gpointer cb_data)728 gboolean procmime_scan_text_content(MimeInfo *mimeinfo,
729 gboolean (*scan_callback)(const gchar *str, gpointer cb_data),
730 gpointer cb_data)
731 {
732 FILE *tmpfp;
733 const gchar *src_codeset;
734 gboolean conv_fail = FALSE;
735 gchar buf[BUFFSIZE];
736 gchar *str;
737 gboolean scan_ret = FALSE;
738 int r;
739
740 cm_return_val_if_fail(mimeinfo != NULL, TRUE);
741 cm_return_val_if_fail(scan_callback != NULL, TRUE);
742
743 if (!procmime_decode_content(mimeinfo))
744 return TRUE;
745
746 tmpfp = my_tmpfile();
747
748 if (tmpfp == NULL) {
749 FILE_OP_ERROR("tmpfile", "open");
750 return TRUE;
751 }
752
753 if ((r = procmime_get_part_to_stream(tmpfp, mimeinfo)) < 0) {
754 g_warning("procmime_get_part_to_stream error %d\n", r);
755 return TRUE;
756 }
757
758 src_codeset = forced_charset
759 ? forced_charset :
760 procmime_mimeinfo_get_parameter(mimeinfo, "charset");
761
762 /* use supersets transparently when possible */
763 if (!forced_charset && src_codeset && !strcasecmp(src_codeset, CS_ISO_8859_1))
764 src_codeset = CS_WINDOWS_1252;
765 else if (!forced_charset && src_codeset && !strcasecmp(src_codeset, CS_X_GBK))
766 src_codeset = CS_GB18030;
767 else if (!forced_charset && src_codeset && !strcasecmp(src_codeset, CS_GBK))
768 src_codeset = CS_GB18030;
769 else if (!forced_charset && src_codeset && !strcasecmp(src_codeset, CS_GB2312))
770 src_codeset = CS_GB18030;
771 else if (!forced_charset && src_codeset && !strcasecmp(src_codeset, CS_X_VIET_VPS))
772 src_codeset = CS_WINDOWS_874;
773
774 if (mimeinfo->type == MIMETYPE_TEXT && !g_ascii_strcasecmp(mimeinfo->subtype, "html")) {
775 SC_HTMLParser *parser;
776 CodeConverter *conv;
777
778 conv = conv_code_converter_new(src_codeset);
779 parser = sc_html_parser_new(tmpfp, conv);
780 while ((str = sc_html_parse(parser)) != NULL) {
781 if ((scan_ret = scan_callback(str, cb_data)) == TRUE)
782 break;
783 }
784 sc_html_parser_destroy(parser);
785 conv_code_converter_destroy(conv);
786 } else if (mimeinfo->type == MIMETYPE_TEXT && !g_ascii_strcasecmp(mimeinfo->subtype, "enriched")) {
787 ERTFParser *parser;
788 CodeConverter *conv;
789
790 conv = conv_code_converter_new(src_codeset);
791 parser = ertf_parser_new(tmpfp, conv);
792 while ((str = ertf_parse(parser)) != NULL) {
793 if ((scan_ret = scan_callback(str, cb_data)) == TRUE)
794 break;
795 }
796 ertf_parser_destroy(parser);
797 conv_code_converter_destroy(conv);
798 } else if (mimeinfo->type == MIMETYPE_TEXT && mimeinfo->disposition != DISPOSITIONTYPE_ATTACHMENT) {
799 while (claws_fgets(buf, sizeof(buf), tmpfp) != NULL) {
800 str = conv_codeset_strdup(buf, src_codeset, CS_UTF_8);
801 if (str) {
802 if ((scan_ret = scan_callback(str, cb_data)) == TRUE) {
803 g_free(str);
804 break;
805 }
806 g_free(str);
807 } else {
808 conv_fail = TRUE;
809 if ((scan_ret = scan_callback(buf, cb_data)) == TRUE)
810 break;
811 }
812 }
813 }
814
815 if (conv_fail)
816 g_warning("procmime_get_text_content(): Code conversion failed.");
817
818 claws_fclose(tmpfp);
819
820 return scan_ret;
821 }
822
scan_fputs_cb(const gchar * str,gpointer fp)823 static gboolean scan_fputs_cb(const gchar *str, gpointer fp)
824 {
825 if (claws_fputs(str, (FILE *)fp) == EOF)
826 return TRUE;
827
828 return FALSE;
829 }
830
procmime_get_text_content(MimeInfo * mimeinfo)831 FILE *procmime_get_text_content(MimeInfo *mimeinfo)
832 {
833 FILE *outfp;
834 gboolean err;
835
836 if ((outfp = my_tmpfile()) == NULL) {
837 perror("my_tmpfile");
838 return NULL;
839 }
840
841 err = procmime_scan_text_content(mimeinfo, scan_fputs_cb, outfp);
842
843 rewind(outfp);
844 if (err == TRUE) {
845 claws_fclose(outfp);
846 return NULL;
847 }
848 return outfp;
849
850 }
851
procmime_get_binary_content(MimeInfo * mimeinfo)852 FILE *procmime_get_binary_content(MimeInfo *mimeinfo)
853 {
854 FILE *outfp;
855
856 cm_return_val_if_fail(mimeinfo != NULL, NULL);
857
858 if (!procmime_decode_content(mimeinfo))
859 return NULL;
860
861 outfp = my_tmpfile();
862
863 if (procmime_get_part_to_stream(outfp, mimeinfo) < 0) {
864 return NULL;
865 }
866
867 return outfp;
868 }
869
870 /* search the first text part of (multipart) MIME message,
871 decode, convert it and output to outfp. */
procmime_get_first_text_content(MsgInfo * msginfo)872 FILE *procmime_get_first_text_content(MsgInfo *msginfo)
873 {
874 FILE *outfp = NULL;
875 MimeInfo *mimeinfo, *partinfo;
876 gboolean empty_ok = FALSE, short_scan = TRUE;
877
878 cm_return_val_if_fail(msginfo != NULL, NULL);
879
880 /* first we try to short-scan (for speed), refusing empty parts */
881 scan_again:
882 if (short_scan)
883 mimeinfo = procmime_scan_message_short(msginfo);
884 else
885 mimeinfo = procmime_scan_message(msginfo);
886 if (!mimeinfo) return NULL;
887
888 partinfo = mimeinfo;
889 while (partinfo && (partinfo->type != MIMETYPE_TEXT ||
890 (partinfo->length == 0 && !empty_ok))) {
891 partinfo = procmime_mimeinfo_next(partinfo);
892 }
893 if (partinfo)
894 outfp = procmime_get_text_content(partinfo);
895 else if (!empty_ok && short_scan) {
896 /* if short scan didn't find a non-empty part, rescan
897 * fully for non-empty parts
898 */
899 short_scan = FALSE;
900 procmime_mimeinfo_free_all(&mimeinfo);
901 goto scan_again;
902 } else if (!empty_ok && !short_scan) {
903 /* if full scan didn't find a non-empty part, rescan
904 * accepting empty parts
905 */
906 empty_ok = TRUE;
907 procmime_mimeinfo_free_all(&mimeinfo);
908 goto scan_again;
909 }
910 procmime_mimeinfo_free_all(&mimeinfo);
911
912 return outfp;
913 }
914
915
find_encrypted_func(GNode * node,gpointer data)916 static gboolean find_encrypted_func(GNode *node, gpointer data)
917 {
918 MimeInfo *mimeinfo = (MimeInfo *) node->data;
919 MimeInfo **encinfo = (MimeInfo **) data;
920
921 if (privacy_mimeinfo_is_encrypted(mimeinfo)) {
922 *encinfo = mimeinfo;
923 return TRUE;
924 }
925
926 return FALSE;
927 }
928
find_encrypted_part(MimeInfo * rootinfo)929 static MimeInfo *find_encrypted_part(MimeInfo *rootinfo)
930 {
931 MimeInfo *encinfo = NULL;
932
933 g_node_traverse(rootinfo->node, G_IN_ORDER, G_TRAVERSE_ALL, -1,
934 find_encrypted_func, &encinfo);
935
936 return encinfo;
937 }
938
939 /* search the first encrypted text part of (multipart) MIME message,
940 decode, convert it and output to outfp. */
procmime_get_first_encrypted_text_content(MsgInfo * msginfo)941 FILE *procmime_get_first_encrypted_text_content(MsgInfo *msginfo)
942 {
943 FILE *outfp = NULL;
944 MimeInfo *mimeinfo, *partinfo, *encinfo;
945
946 cm_return_val_if_fail(msginfo != NULL, NULL);
947
948 mimeinfo = procmime_scan_message(msginfo);
949 if (!mimeinfo) {
950 return NULL;
951 }
952
953 partinfo = mimeinfo;
954 if ((encinfo = find_encrypted_part(partinfo)) != NULL) {
955 debug_print("decrypting message part\n");
956 if (privacy_mimeinfo_decrypt(encinfo) < 0) {
957 alertpanel_error(_("Couldn't decrypt: %s"),
958 privacy_get_error());
959 return NULL;
960 }
961 }
962 partinfo = mimeinfo;
963 while (partinfo && partinfo->type != MIMETYPE_TEXT) {
964 partinfo = procmime_mimeinfo_next(partinfo);
965 if (privacy_mimeinfo_is_signed(partinfo))
966 procmsg_msginfo_set_flags(msginfo, 0, MSG_SIGNED);
967 }
968
969 if (partinfo)
970 outfp = procmime_get_text_content(partinfo);
971
972 procmime_mimeinfo_free_all(&mimeinfo);
973
974 return outfp;
975 }
976
procmime_msginfo_is_encrypted(MsgInfo * msginfo)977 gboolean procmime_msginfo_is_encrypted(MsgInfo *msginfo)
978 {
979 MimeInfo *mimeinfo, *partinfo;
980 gboolean result = FALSE;
981
982 cm_return_val_if_fail(msginfo != NULL, FALSE);
983
984 mimeinfo = procmime_scan_message(msginfo);
985 if (!mimeinfo) {
986 return FALSE;
987 }
988
989 partinfo = mimeinfo;
990 result = (find_encrypted_part(partinfo) != NULL);
991 procmime_mimeinfo_free_all(&mimeinfo);
992
993 return result;
994 }
995
procmime_get_tmp_file_name(MimeInfo * mimeinfo)996 gchar *procmime_get_tmp_file_name(MimeInfo *mimeinfo)
997 {
998 static guint32 id = 0;
999 gchar *base;
1000 gchar *filename;
1001 gchar f_prefix[10];
1002
1003 cm_return_val_if_fail(mimeinfo != NULL, NULL);
1004
1005 g_snprintf(f_prefix, sizeof(f_prefix), "%08x.", id++);
1006
1007 if ((mimeinfo->type == MIMETYPE_TEXT) && !g_ascii_strcasecmp(mimeinfo->subtype, "html"))
1008 base = g_strdup("mimetmp.html");
1009 else {
1010 const gchar *basetmp;
1011
1012 basetmp = procmime_mimeinfo_get_parameter(mimeinfo, "filename");
1013 if (basetmp == NULL)
1014 basetmp = procmime_mimeinfo_get_parameter(mimeinfo, "name");
1015 if (basetmp == NULL)
1016 basetmp = "mimetmp";
1017 basetmp = g_path_get_basename(basetmp);
1018 if (*basetmp == '\0')
1019 basetmp = g_strdup("mimetmp");
1020 base = conv_filename_from_utf8(basetmp);
1021 g_free((gchar*)basetmp);
1022 subst_for_shellsafe_filename(base);
1023 }
1024
1025 filename = g_strconcat(get_mime_tmp_dir(), G_DIR_SEPARATOR_S,
1026 f_prefix, base, NULL);
1027
1028 g_free(base);
1029
1030 return filename;
1031 }
1032
1033 static GList *mime_type_list = NULL;
1034
procmime_get_mime_type(const gchar * filename)1035 gchar *procmime_get_mime_type(const gchar *filename)
1036 {
1037 const gchar *p;
1038 gchar *ext = NULL;
1039 gchar *base;
1040 #ifndef G_OS_WIN32
1041 static GHashTable *mime_type_table = NULL;
1042 MimeType *mime_type;
1043
1044 if (!mime_type_table) {
1045 mime_type_table = procmime_get_mime_type_table();
1046 if (!mime_type_table) return NULL;
1047 }
1048 #endif
1049
1050 if (filename == NULL)
1051 return NULL;
1052
1053 base = g_path_get_basename(filename);
1054 if ((p = strrchr(base, '.')) != NULL)
1055 ext = g_utf8_strdown(p + 1, -1);
1056 else
1057 ext = g_utf8_strdown(base, -1);
1058 g_free(base);
1059
1060 #ifndef G_OS_WIN32
1061 mime_type = g_hash_table_lookup(mime_type_table, ext);
1062
1063 if (mime_type) {
1064 gchar *str;
1065 str = g_strconcat(mime_type->type, "/", mime_type->sub_type,
1066 NULL);
1067 debug_print("got type %s for %s\n", str, ext);
1068 g_free(ext);
1069 return str;
1070 }
1071 g_free(ext);
1072 return NULL;
1073 #else
1074 gchar *str = get_content_type_from_registry_with_ext(ext);
1075
1076 g_free(ext);
1077 return str;
1078 #endif
1079 }
1080
procmime_str_hash(gconstpointer gptr)1081 static guint procmime_str_hash(gconstpointer gptr)
1082 {
1083 guint hash_result = 0;
1084 const char *str;
1085
1086 for (str = gptr; str && *str; str++) {
1087 if (isupper(*str)) hash_result += (*str + ' ');
1088 else hash_result += *str;
1089 }
1090
1091 return hash_result;
1092 }
1093
procmime_str_equal(gconstpointer gptr1,gconstpointer gptr2)1094 static gint procmime_str_equal(gconstpointer gptr1, gconstpointer gptr2)
1095 {
1096 const char *str1 = gptr1;
1097 const char *str2 = gptr2;
1098
1099 return !g_utf8_collate(str1, str2);
1100 }
1101
procmime_get_mime_type_table(void)1102 static GHashTable *procmime_get_mime_type_table(void)
1103 {
1104 GHashTable *table = NULL;
1105 GList *cur;
1106 MimeType *mime_type;
1107 gchar **exts;
1108
1109 if (!mime_type_list) {
1110 mime_type_list = procmime_get_mime_type_list();
1111 if (!mime_type_list) return NULL;
1112 }
1113
1114 table = g_hash_table_new(procmime_str_hash, procmime_str_equal);
1115
1116 for (cur = mime_type_list; cur != NULL; cur = cur->next) {
1117 gint i;
1118 gchar *key;
1119
1120 mime_type = (MimeType *)cur->data;
1121
1122 if (!mime_type->extension) continue;
1123
1124 exts = g_strsplit(mime_type->extension, " ", 16);
1125 for (i = 0; exts[i] != NULL; i++) {
1126 /* Don't overwrite previously inserted extension */
1127 if (!g_hash_table_lookup(table, exts[i])) {
1128 key = g_strdup(exts[i]);
1129 g_hash_table_insert(table, key, mime_type);
1130 }
1131 }
1132 g_strfreev(exts);
1133 }
1134
1135 return table;
1136 }
1137
procmime_get_mime_type_list(void)1138 GList *procmime_get_mime_type_list(void)
1139 {
1140 GList *list = NULL;
1141 FILE *fp;
1142 gchar buf[BUFFSIZE];
1143 gchar *p;
1144 gchar *delim;
1145 MimeType *mime_type;
1146 gboolean fp_is_glob_file = TRUE;
1147
1148 if (mime_type_list)
1149 return mime_type_list;
1150
1151 #if defined(__NetBSD__) || defined(__OpenBSD__) || defined(__FreeBSD__)
1152 if ((fp = claws_fopen(DATAROOTDIR "/mime/globs", "rb")) == NULL)
1153 #else
1154 if ((fp = claws_fopen("/usr/share/mime/globs", "rb")) == NULL)
1155 #endif
1156 {
1157 fp_is_glob_file = FALSE;
1158 if ((fp = claws_fopen("/etc/mime.types", "rb")) == NULL) {
1159 if ((fp = claws_fopen(SYSCONFDIR "/mime.types", "rb"))
1160 == NULL) {
1161 FILE_OP_ERROR(SYSCONFDIR "/mime.types",
1162 "claws_fopen");
1163 return NULL;
1164 }
1165 }
1166 }
1167
1168 while (claws_fgets(buf, sizeof(buf), fp) != NULL) {
1169 p = strchr(buf, '#');
1170 if (p) *p = '\0';
1171 g_strstrip(buf);
1172
1173 p = buf;
1174
1175 if (fp_is_glob_file) {
1176 while (*p && !g_ascii_isspace(*p) && (*p!=':')) p++;
1177 } else {
1178 while (*p && !g_ascii_isspace(*p)) p++;
1179 }
1180
1181 if (*p) {
1182 *p = '\0';
1183 p++;
1184 }
1185 delim = strchr(buf, '/');
1186 if (delim == NULL) continue;
1187 *delim = '\0';
1188
1189 mime_type = g_new(MimeType, 1);
1190 mime_type->type = g_strdup(buf);
1191 mime_type->sub_type = g_strdup(delim + 1);
1192
1193 if (fp_is_glob_file) {
1194 while (*p && (g_ascii_isspace(*p)||(*p=='*')||(*p=='.'))) p++;
1195 } else {
1196 while (*p && g_ascii_isspace(*p)) p++;
1197 }
1198
1199 if (*p)
1200 mime_type->extension = g_utf8_strdown(p, -1);
1201 else
1202 mime_type->extension = NULL;
1203
1204 list = g_list_append(list, mime_type);
1205 }
1206
1207 claws_fclose(fp);
1208
1209 if (!list)
1210 g_warning("Can't read mime.types");
1211
1212 return list;
1213 }
1214
procmime_get_encoding_for_charset(const gchar * charset)1215 EncodingType procmime_get_encoding_for_charset(const gchar *charset)
1216 {
1217 if (!charset)
1218 return ENC_8BIT;
1219 else if (!g_ascii_strncasecmp(charset, "ISO-2022-", 9) ||
1220 !g_ascii_strcasecmp(charset, "US-ASCII"))
1221 return ENC_7BIT;
1222 else if (!g_ascii_strcasecmp(charset, "ISO-8859-5") ||
1223 !g_ascii_strncasecmp(charset, "KOI8-", 5) ||
1224 !g_ascii_strcasecmp(charset, "X-MAC-CYRILLIC") ||
1225 !g_ascii_strcasecmp(charset, "MAC-CYRILLIC") ||
1226 !g_ascii_strcasecmp(charset, "Windows-1251"))
1227 return ENC_8BIT;
1228 else if (!g_ascii_strncasecmp(charset, "ISO-8859-", 9))
1229 return ENC_QUOTED_PRINTABLE;
1230 else if (!g_ascii_strncasecmp(charset, "UTF-8", 5))
1231 return ENC_QUOTED_PRINTABLE;
1232 else
1233 return ENC_8BIT;
1234 }
1235
procmime_get_encoding_for_text_file(const gchar * file,gboolean * has_binary)1236 EncodingType procmime_get_encoding_for_text_file(const gchar *file, gboolean *has_binary)
1237 {
1238 FILE *fp;
1239 guchar buf[BUFFSIZE];
1240 size_t len;
1241 size_t octet_chars = 0;
1242 size_t total_len = 0;
1243 gfloat octet_percentage;
1244 gboolean force_b64 = FALSE;
1245
1246 if ((fp = claws_fopen(file, "rb")) == NULL) {
1247 FILE_OP_ERROR(file, "claws_fopen");
1248 return ENC_UNKNOWN;
1249 }
1250
1251 while ((len = claws_fread(buf, sizeof(guchar), sizeof(buf), fp)) > 0) {
1252 guchar *p;
1253 gint i;
1254
1255 for (p = buf, i = 0; i < len; ++p, ++i) {
1256 if (*p & 0x80)
1257 ++octet_chars;
1258 if (*p == '\0') {
1259 force_b64 = TRUE;
1260 *has_binary = TRUE;
1261 }
1262 }
1263 total_len += len;
1264 }
1265
1266 claws_fclose(fp);
1267
1268 if (total_len > 0)
1269 octet_percentage = (gfloat)octet_chars / (gfloat)total_len;
1270 else
1271 octet_percentage = 0.0;
1272
1273 debug_print("procmime_get_encoding_for_text_file(): "
1274 "8bit chars: %"G_GSIZE_FORMAT" / %"G_GSIZE_FORMAT" (%f%%)\n", octet_chars, total_len,
1275 100.0 * octet_percentage);
1276
1277 if (octet_percentage > 0.20 || force_b64) {
1278 debug_print("using BASE64\n");
1279 return ENC_BASE64;
1280 } else if (octet_chars > 0) {
1281 debug_print("using quoted-printable\n");
1282 return ENC_QUOTED_PRINTABLE;
1283 } else {
1284 debug_print("using 7bit\n");
1285 return ENC_7BIT;
1286 }
1287 }
1288
1289 struct EncodingTable
1290 {
1291 gchar *str;
1292 EncodingType enc_type;
1293 };
1294
1295 struct EncodingTable encoding_table[] = {
1296 {"7bit", ENC_7BIT},
1297 {"8bit", ENC_8BIT},
1298 {"binary", ENC_BINARY},
1299 {"quoted-printable", ENC_QUOTED_PRINTABLE},
1300 {"base64", ENC_BASE64},
1301 {"x-uuencode", ENC_UNKNOWN},
1302 {NULL, ENC_UNKNOWN},
1303 };
1304
procmime_get_encoding_str(EncodingType encoding)1305 const gchar *procmime_get_encoding_str(EncodingType encoding)
1306 {
1307 struct EncodingTable *enc_table;
1308
1309 for (enc_table = encoding_table; enc_table->str != NULL; enc_table++) {
1310 if (enc_table->enc_type == encoding)
1311 return enc_table->str;
1312 }
1313 return NULL;
1314 }
1315
1316 /* --- NEW MIME STUFF --- */
1317 struct TypeTable
1318 {
1319 gchar *str;
1320 MimeMediaType type;
1321 };
1322
1323 static struct TypeTable mime_type_table[] = {
1324 {"text", MIMETYPE_TEXT},
1325 {"image", MIMETYPE_IMAGE},
1326 {"audio", MIMETYPE_AUDIO},
1327 {"video", MIMETYPE_VIDEO},
1328 {"model", MIMETYPE_MODEL},
1329 {"application", MIMETYPE_APPLICATION},
1330 {"message", MIMETYPE_MESSAGE},
1331 {"multipart", MIMETYPE_MULTIPART},
1332 {NULL, 0},
1333 };
1334
procmime_get_media_type_str(MimeMediaType type)1335 const gchar *procmime_get_media_type_str(MimeMediaType type)
1336 {
1337 struct TypeTable *type_table;
1338
1339 for (type_table = mime_type_table; type_table->str != NULL; type_table++) {
1340 if (type_table->type == type)
1341 return type_table->str;
1342 }
1343 return NULL;
1344 }
1345
procmime_get_media_type(const gchar * str)1346 MimeMediaType procmime_get_media_type(const gchar *str)
1347 {
1348 struct TypeTable *typetablearray;
1349
1350 for (typetablearray = mime_type_table; typetablearray->str != NULL; typetablearray++)
1351 if (g_ascii_strncasecmp(str, typetablearray->str, strlen(typetablearray->str)) == 0)
1352 return typetablearray->type;
1353
1354 return MIMETYPE_UNKNOWN;
1355 }
1356
1357 /*!
1358 *\brief Safe wrapper for content type string.
1359 *
1360 *\return const gchar * Pointer to content type string.
1361 */
procmime_get_content_type_str(MimeMediaType type,const char * subtype)1362 gchar *procmime_get_content_type_str(MimeMediaType type,
1363 const char *subtype)
1364 {
1365 const gchar *type_str = NULL;
1366
1367 if (subtype == NULL || !(type_str = procmime_get_media_type_str(type)))
1368 return g_strdup("unknown");
1369 return g_strdup_printf("%s/%s", type_str, subtype);
1370 }
1371
1372 static int procmime_parse_mimepart(MimeInfo *parent,
1373 gchar *content_type,
1374 gchar *content_encoding,
1375 gchar *content_description,
1376 gchar *content_id,
1377 gchar *content_disposition,
1378 gchar *content_location,
1379 const gchar *original_msgid,
1380 const gchar *disposition_notification_hdr,
1381 const gchar *filename,
1382 guint offset,
1383 guint length,
1384 gboolean short_scan);
1385
procmime_parse_message_rfc822(MimeInfo * mimeinfo,gboolean short_scan)1386 static void procmime_parse_message_rfc822(MimeInfo *mimeinfo, gboolean short_scan)
1387 {
1388 HeaderEntry hentry[] = {{"Content-Type:", NULL, TRUE},
1389 {"Content-Transfer-Encoding:",
1390 NULL, FALSE},
1391 {"Content-Description:",
1392 NULL, TRUE},
1393 {"Content-ID:",
1394 NULL, TRUE},
1395 {"Content-Disposition:",
1396 NULL, TRUE},
1397 {"Content-Location:",
1398 NULL, TRUE},
1399 {"MIME-Version:",
1400 NULL, TRUE},
1401 {"Original-Message-ID:",
1402 NULL, TRUE},
1403 {"Disposition:",
1404 NULL, TRUE},
1405 {NULL, NULL, FALSE}};
1406 guint content_start, i;
1407 FILE *fp;
1408 gchar *tmp;
1409 gint len = 0;
1410
1411 procmime_decode_content(mimeinfo);
1412
1413 fp = claws_fopen(mimeinfo->data.filename, "rb");
1414 if (fp == NULL) {
1415 FILE_OP_ERROR(mimeinfo->data.filename, "claws_fopen");
1416 return;
1417 }
1418 if (fseek(fp, mimeinfo->offset, SEEK_SET) < 0) {
1419 FILE_OP_ERROR(mimeinfo->data.filename, "fseek");
1420 claws_fclose(fp);
1421 return;
1422 }
1423 procheader_get_header_fields(fp, hentry);
1424 if (hentry[0].body != NULL) {
1425 tmp = conv_unmime_header(hentry[0].body, NULL, FALSE);
1426 g_free(hentry[0].body);
1427 hentry[0].body = tmp;
1428 }
1429 if (hentry[2].body != NULL) {
1430 tmp = conv_unmime_header(hentry[2].body, NULL, FALSE);
1431 g_free(hentry[2].body);
1432 hentry[2].body = tmp;
1433 }
1434 if (hentry[4].body != NULL) {
1435 tmp = conv_unmime_header(hentry[4].body, NULL, FALSE);
1436 g_free(hentry[4].body);
1437 hentry[4].body = tmp;
1438 }
1439 if (hentry[5].body != NULL) {
1440 tmp = conv_unmime_header(hentry[5].body, NULL, FALSE);
1441 g_free(hentry[5].body);
1442 hentry[5].body = tmp;
1443 }
1444 if (hentry[7].body != NULL) {
1445 tmp = conv_unmime_header(hentry[7].body, NULL, FALSE);
1446 g_free(hentry[7].body);
1447 hentry[7].body = tmp;
1448 }
1449 if (hentry[8].body != NULL) {
1450 tmp = conv_unmime_header(hentry[8].body, NULL, FALSE);
1451 g_free(hentry[8].body);
1452 hentry[8].body = tmp;
1453 }
1454
1455 content_start = ftell(fp);
1456 claws_fclose(fp);
1457
1458 len = mimeinfo->length - (content_start - mimeinfo->offset);
1459 if (len < 0)
1460 len = 0;
1461 procmime_parse_mimepart(mimeinfo,
1462 hentry[0].body, hentry[1].body,
1463 hentry[2].body, hentry[3].body,
1464 hentry[4].body, hentry[5].body,
1465 hentry[7].body, hentry[8].body,
1466 mimeinfo->data.filename, content_start,
1467 len, short_scan);
1468
1469 for (i = 0; i < (sizeof hentry / sizeof hentry[0]); i++) {
1470 g_free(hentry[i].body);
1471 hentry[i].body = NULL;
1472 }
1473 }
1474
procmime_parse_disposition_notification(MimeInfo * mimeinfo,const gchar * original_msgid,const gchar * disposition_notification_hdr,gboolean short_scan)1475 static void procmime_parse_disposition_notification(MimeInfo *mimeinfo,
1476 const gchar *original_msgid, const gchar *disposition_notification_hdr,
1477 gboolean short_scan)
1478 {
1479 HeaderEntry hentry[] = {{"Original-Message-ID:", NULL, TRUE},
1480 {"Disposition:", NULL, TRUE},
1481 {NULL, NULL, FALSE}};
1482 guint i;
1483 FILE *fp;
1484 gchar *orig_msg_id = NULL;
1485 gchar *disp = NULL;
1486
1487 procmime_decode_content(mimeinfo);
1488
1489 debug_print("parse disposition notification\n");
1490 fp = claws_fopen(mimeinfo->data.filename, "rb");
1491 if (fp == NULL) {
1492 FILE_OP_ERROR(mimeinfo->data.filename, "claws_fopen");
1493 return;
1494 }
1495 if (fseek(fp, mimeinfo->offset, SEEK_SET) < 0) {
1496 FILE_OP_ERROR(mimeinfo->data.filename, "fseek");
1497 claws_fclose(fp);
1498 return;
1499 }
1500
1501 if (original_msgid && disposition_notification_hdr) {
1502 hentry[0].body = g_strdup(original_msgid);
1503 hentry[1].body = g_strdup(disposition_notification_hdr);
1504 } else {
1505 procheader_get_header_fields(fp, hentry);
1506 }
1507
1508 claws_fclose(fp);
1509
1510 if (!hentry[0].body || !hentry[1].body) {
1511 debug_print("MsgId %s, Disp %s\n",
1512 hentry[0].body ? hentry[0].body:"(nil)",
1513 hentry[1].body ? hentry[1].body:"(nil)");
1514 goto bail;
1515 }
1516
1517 orig_msg_id = g_strdup(hentry[0].body);
1518 disp = g_strdup(hentry[1].body);
1519
1520 extract_parenthesis(orig_msg_id, '<', '>');
1521 remove_space(orig_msg_id);
1522
1523 if (strstr(disp, "displayed")) {
1524 /* find sent message, if possible */
1525 MsgInfo *info = NULL;
1526 GList *flist;
1527 debug_print("%s has been displayed.\n", orig_msg_id);
1528 for (flist = folder_get_list(); flist != NULL; flist = g_list_next(flist)) {
1529 FolderItem *outbox = ((Folder *)(flist->data))->outbox;
1530 if (!outbox) {
1531 debug_print("skipping folder with no outbox...\n");
1532 continue;
1533 }
1534 info = folder_item_get_msginfo_by_msgid(outbox, orig_msg_id);
1535 debug_print("%s %s in %s\n", info?"found":"didn't find", orig_msg_id, outbox->path);
1536 if (info) {
1537 procmsg_msginfo_set_flags(info, MSG_RETRCPT_GOT, 0);
1538 procmsg_msginfo_free(&info);
1539 }
1540 }
1541 }
1542 g_free(orig_msg_id);
1543 g_free(disp);
1544 bail:
1545 for (i = 0; i < (sizeof hentry / sizeof hentry[0]); i++) {
1546 g_free(hentry[i].body);
1547 hentry[i].body = NULL;
1548 }
1549 }
1550
1551 #define GET_HEADERS() { \
1552 procheader_get_header_fields(fp, hentry); \
1553 if (hentry[0].body != NULL) { \
1554 tmp = conv_unmime_header(hentry[0].body, NULL, FALSE); \
1555 g_free(hentry[0].body); \
1556 hentry[0].body = tmp; \
1557 } \
1558 if (hentry[2].body != NULL) { \
1559 tmp = conv_unmime_header(hentry[2].body, NULL, FALSE); \
1560 g_free(hentry[2].body); \
1561 hentry[2].body = tmp; \
1562 } \
1563 if (hentry[4].body != NULL) { \
1564 tmp = conv_unmime_header(hentry[4].body, NULL, FALSE); \
1565 g_free(hentry[4].body); \
1566 hentry[4].body = tmp; \
1567 } \
1568 if (hentry[5].body != NULL) { \
1569 tmp = conv_unmime_header(hentry[5].body, NULL, FALSE); \
1570 g_free(hentry[5].body); \
1571 hentry[5].body = tmp; \
1572 } \
1573 if (hentry[6].body != NULL) { \
1574 tmp = conv_unmime_header(hentry[6].body, NULL, FALSE); \
1575 g_free(hentry[6].body); \
1576 hentry[6].body = tmp; \
1577 } \
1578 if (hentry[7].body != NULL) { \
1579 tmp = conv_unmime_header(hentry[7].body, NULL, FALSE); \
1580 g_free(hentry[7].body); \
1581 hentry[7].body = tmp; \
1582 } \
1583 }
1584
procmime_parse_multipart(MimeInfo * mimeinfo,gboolean short_scan)1585 static void procmime_parse_multipart(MimeInfo *mimeinfo, gboolean short_scan)
1586 {
1587 HeaderEntry hentry[] = {{"Content-Type:", NULL, TRUE},
1588 {"Content-Transfer-Encoding:",
1589 NULL, FALSE},
1590 {"Content-Description:",
1591 NULL, TRUE},
1592 {"Content-ID:",
1593 NULL, TRUE},
1594 {"Content-Disposition:",
1595 NULL, TRUE},
1596 {"Content-Location:",
1597 NULL, TRUE},
1598 {"Original-Message-ID:",
1599 NULL, TRUE},
1600 {"Disposition:",
1601 NULL, TRUE},
1602 {NULL, NULL, FALSE}};
1603 gchar *tmp;
1604 gchar *boundary;
1605 gint boundary_len = 0, lastoffset = -1, i;
1606 gchar buf[BUFFSIZE];
1607 FILE *fp;
1608 int result = 0;
1609 gboolean start_found = FALSE;
1610 gboolean end_found = FALSE;
1611
1612 boundary = g_hash_table_lookup(mimeinfo->typeparameters, "boundary");
1613 if (!boundary)
1614 return;
1615 boundary_len = strlen(boundary);
1616
1617 procmime_decode_content(mimeinfo);
1618
1619 fp = claws_fopen(mimeinfo->data.filename, "rb");
1620 if (fp == NULL) {
1621 FILE_OP_ERROR(mimeinfo->data.filename, "claws_fopen");
1622 return;
1623 }
1624
1625 if (fseek(fp, mimeinfo->offset, SEEK_SET) < 0) {
1626 FILE_OP_ERROR(mimeinfo->data.filename, "fseek");
1627 claws_fclose(fp);
1628 return;
1629 }
1630
1631 while (claws_fgets(buf, sizeof(buf), fp) != NULL && result == 0) {
1632 if (ftell(fp) - 1 > (mimeinfo->offset + mimeinfo->length))
1633 break;
1634
1635 if (IS_BOUNDARY(buf, boundary, boundary_len)) {
1636 start_found = TRUE;
1637
1638 if (lastoffset != -1) {
1639 gint len = (ftell(fp) - strlen(buf)) - lastoffset - 1;
1640 if (len < 0)
1641 len = 0;
1642 result = procmime_parse_mimepart(mimeinfo,
1643 hentry[0].body, hentry[1].body,
1644 hentry[2].body, hentry[3].body,
1645 hentry[4].body, hentry[5].body,
1646 hentry[6].body, hentry[7].body,
1647 mimeinfo->data.filename, lastoffset,
1648 len, short_scan);
1649 if (result == 1 && short_scan)
1650 break;
1651
1652 }
1653
1654 if (buf[2 + boundary_len] == '-' &&
1655 buf[2 + boundary_len + 1] == '-') {
1656 end_found = TRUE;
1657 break;
1658 }
1659 for (i = 0; i < (sizeof hentry / sizeof hentry[0]) ; i++) {
1660 g_free(hentry[i].body);
1661 hentry[i].body = NULL;
1662 }
1663 GET_HEADERS();
1664 lastoffset = ftell(fp);
1665 }
1666 }
1667
1668 if (start_found && !end_found && lastoffset != -1) {
1669 gint len = (ftell(fp) - strlen(buf)) - lastoffset - 1;
1670
1671 if (len >= 0) {
1672 result = procmime_parse_mimepart(mimeinfo,
1673 hentry[0].body, hentry[1].body,
1674 hentry[2].body, hentry[3].body,
1675 hentry[4].body, hentry[5].body,
1676 hentry[6].body, hentry[7].body,
1677 mimeinfo->data.filename, lastoffset,
1678 len, short_scan);
1679 }
1680 mimeinfo->broken = TRUE;
1681 }
1682
1683 for (i = 0; i < (sizeof hentry / sizeof hentry[0]); i++) {
1684 g_free(hentry[i].body);
1685 hentry[i].body = NULL;
1686 }
1687 claws_fclose(fp);
1688 }
1689
parse_parameters(const gchar * parameters,GHashTable * table)1690 static void parse_parameters(const gchar *parameters, GHashTable *table)
1691 {
1692 gchar *params, *param, *next;
1693 GSList *convlist = NULL, *concatlist = NULL, *cur;
1694
1695 params = g_strdup(parameters);
1696 param = params;
1697 next = params;
1698 for (; next != NULL; param = next) {
1699 gchar *attribute, *value, *tmp, *down_attr, *orig_down_attr;
1700 gint len;
1701 gboolean convert = FALSE;
1702
1703 next = strchr_with_skip_quote(param, '"', ';');
1704 if (next != NULL) {
1705 next[0] = '\0';
1706 next++;
1707 }
1708
1709 g_strstrip(param);
1710
1711 attribute = param;
1712 value = strchr(attribute, '=');
1713 if (value == NULL)
1714 continue;
1715
1716 value[0] = '\0';
1717 value++;
1718 while (value[0] != '\0' && value[0] == ' ')
1719 value++;
1720
1721 down_attr = g_utf8_strdown(attribute, -1);
1722 orig_down_attr = down_attr;
1723
1724 len = down_attr ? strlen(down_attr):0;
1725 if (len > 0 && down_attr[len - 1] == '*') {
1726 gchar *srcpos, *dstpos, *endpos;
1727
1728 convert = TRUE;
1729 down_attr[len - 1] = '\0';
1730
1731 srcpos = value;
1732 dstpos = value;
1733 endpos = value + strlen(value);
1734 while (srcpos < endpos) {
1735 if (*srcpos != '%')
1736 *dstpos = *srcpos;
1737 else {
1738 guchar dstvalue;
1739
1740 if (!get_hex_value(&dstvalue, srcpos[1], srcpos[2]))
1741 *dstpos = '?';
1742 else
1743 *dstpos = dstvalue;
1744 srcpos += 2;
1745 }
1746 srcpos++;
1747 dstpos++;
1748 }
1749 *dstpos = '\0';
1750 if (value[0] == '"')
1751 extract_quote(value, '"');
1752 } else {
1753 if (value[0] == '"')
1754 extract_quote(value, '"');
1755 else if ((tmp = strchr(value, ' ')) != NULL)
1756 *tmp = '\0';
1757 }
1758
1759 if (down_attr) {
1760 while (down_attr[0] == ' ')
1761 down_attr++;
1762 while (down_attr[strlen(down_attr)-1] == ' ')
1763 down_attr[strlen(down_attr)-1] = '\0';
1764 }
1765
1766 while (value[0] != '\0' && value[0] == ' ')
1767 value++;
1768 while (value[strlen(value)-1] == ' ')
1769 value[strlen(value)-1] = '\0';
1770
1771 if (down_attr && strrchr(down_attr, '*') != NULL) {
1772 gchar *tmpattr;
1773
1774 tmpattr = g_strdup(down_attr);
1775 tmp = strrchr(tmpattr, '*');
1776 tmp[0] = '\0';
1777
1778 if ((tmp[1] == '0') && (tmp[2] == '\0') &&
1779 (g_slist_find_custom(concatlist, down_attr, (GCompareFunc)g_strcmp0) == NULL))
1780 concatlist = g_slist_prepend(concatlist, g_strdup(tmpattr));
1781
1782 if (convert && (g_slist_find_custom(convlist, tmpattr, (GCompareFunc)g_strcmp0) == NULL))
1783 convlist = g_slist_prepend(convlist, g_strdup(tmpattr));
1784
1785 g_free(tmpattr);
1786 } else if (convert) {
1787 if (g_slist_find_custom(convlist, down_attr, (GCompareFunc)g_strcmp0) == NULL)
1788 convlist = g_slist_prepend(convlist, g_strdup(down_attr));
1789 }
1790
1791 if (g_hash_table_lookup(table, down_attr) == NULL)
1792 g_hash_table_insert(table, g_strdup(down_attr), g_strdup(value));
1793 g_free(orig_down_attr);
1794 }
1795
1796 for (cur = concatlist; cur != NULL; cur = g_slist_next(cur)) {
1797 gchar *attribute, *attrwnum, *partvalue;
1798 gint n = 0;
1799 GString *value;
1800
1801 attribute = (gchar *) cur->data;
1802 value = g_string_sized_new(64);
1803
1804 attrwnum = g_strdup_printf("%s*%d", attribute, n);
1805 while ((partvalue = g_hash_table_lookup(table, attrwnum)) != NULL) {
1806 g_string_append(value, partvalue);
1807
1808 g_hash_table_remove(table, attrwnum);
1809 g_free(attrwnum);
1810 n++;
1811 attrwnum = g_strdup_printf("%s*%d", attribute, n);
1812 }
1813 g_free(attrwnum);
1814
1815 g_hash_table_insert(table, g_strdup(attribute), g_strdup(value->str));
1816 g_string_free(value, TRUE);
1817 }
1818 slist_free_strings_full(concatlist);
1819
1820 for (cur = convlist; cur != NULL; cur = g_slist_next(cur)) {
1821 gchar *attribute, *key, *value;
1822 gchar *charset, *lang, *oldvalue, *newvalue;
1823
1824 attribute = (gchar *) cur->data;
1825 if (!g_hash_table_lookup_extended(
1826 table, attribute, (gpointer *)(gchar *) &key, (gpointer *)(gchar *) &value))
1827 continue;
1828
1829 charset = value;
1830 if (charset == NULL)
1831 continue;
1832 lang = strchr(charset, '\'');
1833 if (lang == NULL)
1834 continue;
1835 lang[0] = '\0';
1836 lang++;
1837 oldvalue = strchr(lang, '\'');
1838 if (oldvalue == NULL)
1839 continue;
1840 oldvalue[0] = '\0';
1841 oldvalue++;
1842
1843 newvalue = conv_codeset_strdup(oldvalue, charset, CS_UTF_8);
1844
1845 g_hash_table_remove(table, attribute);
1846 g_free(key);
1847 g_free(value);
1848
1849 g_hash_table_insert(table, g_strdup(attribute), newvalue);
1850 }
1851 slist_free_strings_full(convlist);
1852
1853 g_free(params);
1854 }
1855
procmime_parse_content_type(const gchar * content_type,MimeInfo * mimeinfo)1856 static void procmime_parse_content_type(const gchar *content_type, MimeInfo *mimeinfo)
1857 {
1858 cm_return_if_fail(content_type != NULL);
1859 cm_return_if_fail(mimeinfo != NULL);
1860
1861 /* RFC 2045, page 13 says that the mime subtype is MANDATORY;
1862 * if it's not available we use the default Content-Type */
1863 if ((content_type[0] == '\0') || (strchr(content_type, '/') == NULL)) {
1864 mimeinfo->type = MIMETYPE_TEXT;
1865 mimeinfo->subtype = g_strdup("plain");
1866 if (g_hash_table_lookup(mimeinfo->typeparameters,
1867 "charset") == NULL) {
1868 g_hash_table_insert(mimeinfo->typeparameters,
1869 g_strdup("charset"),
1870 g_strdup(
1871 conv_get_locale_charset_str_no_utf8()));
1872 }
1873 } else {
1874 gchar *type, *subtype, *params;
1875
1876 type = g_strdup(content_type);
1877 subtype = strchr(type, '/') + 1;
1878 *(subtype - 1) = '\0';
1879 if ((params = strchr(subtype, ';')) != NULL) {
1880 params[0] = '\0';
1881 params++;
1882 }
1883
1884 mimeinfo->type = procmime_get_media_type(type);
1885 mimeinfo->subtype = g_strstrip(g_strdup(subtype));
1886
1887 /* Get mimeinfo->typeparameters */
1888 if (params != NULL)
1889 parse_parameters(params, mimeinfo->typeparameters);
1890
1891 g_free(type);
1892 }
1893 }
1894
procmime_parse_content_disposition(const gchar * content_disposition,MimeInfo * mimeinfo)1895 static void procmime_parse_content_disposition(const gchar *content_disposition, MimeInfo *mimeinfo)
1896 {
1897 gchar *tmp, *params;
1898
1899 cm_return_if_fail(content_disposition != NULL);
1900 cm_return_if_fail(mimeinfo != NULL);
1901
1902 tmp = g_strdup(content_disposition);
1903 if ((params = strchr(tmp, ';')) != NULL) {
1904 params[0] = '\0';
1905 params++;
1906 }
1907 g_strstrip(tmp);
1908
1909 if (!g_ascii_strcasecmp(tmp, "inline"))
1910 mimeinfo->disposition = DISPOSITIONTYPE_INLINE;
1911 else if (!g_ascii_strcasecmp(tmp, "attachment"))
1912 mimeinfo->disposition = DISPOSITIONTYPE_ATTACHMENT;
1913 else
1914 mimeinfo->disposition = DISPOSITIONTYPE_ATTACHMENT;
1915
1916 if (params != NULL)
1917 parse_parameters(params, mimeinfo->dispositionparameters);
1918
1919 g_free(tmp);
1920 }
1921
1922
procmime_parse_content_encoding(const gchar * content_encoding,MimeInfo * mimeinfo)1923 static void procmime_parse_content_encoding(const gchar *content_encoding, MimeInfo *mimeinfo)
1924 {
1925 struct EncodingTable *enc_table;
1926
1927 for (enc_table = encoding_table; enc_table->str != NULL; enc_table++) {
1928 if (g_ascii_strcasecmp(enc_table->str, content_encoding) == 0) {
1929 mimeinfo->encoding_type = enc_table->enc_type;
1930 return;
1931 }
1932 }
1933 mimeinfo->encoding_type = ENC_UNKNOWN;
1934 return;
1935 }
1936
1937 static GSList *registered_parsers = NULL;
1938
procmime_get_mimeparser_for_type(MimeMediaType type,const gchar * sub_type)1939 static MimeParser *procmime_get_mimeparser_for_type(MimeMediaType type, const gchar *sub_type)
1940 {
1941 GSList *cur;
1942 for (cur = registered_parsers; cur; cur = cur->next) {
1943 MimeParser *parser = (MimeParser *)cur->data;
1944 if (parser->type == type && !g_strcmp0(parser->sub_type, sub_type))
1945 return parser;
1946 }
1947 return NULL;
1948 }
1949
procmime_mimeparser_register(MimeParser * parser)1950 void procmime_mimeparser_register(MimeParser *parser)
1951 {
1952 if (!procmime_get_mimeparser_for_type(parser->type, parser->sub_type))
1953 registered_parsers = g_slist_append(registered_parsers, parser);
1954 }
1955
1956
procmime_mimeparser_unregister(MimeParser * parser)1957 void procmime_mimeparser_unregister(MimeParser *parser)
1958 {
1959 registered_parsers = g_slist_remove(registered_parsers, parser);
1960 }
1961
procmime_mimeparser_parse(MimeParser * parser,MimeInfo * mimeinfo)1962 static gboolean procmime_mimeparser_parse(MimeParser *parser, MimeInfo *mimeinfo)
1963 {
1964 cm_return_val_if_fail(parser->parse != NULL, FALSE);
1965 return parser->parse(parser, mimeinfo);
1966 }
1967
procmime_parse_mimepart(MimeInfo * parent,gchar * content_type,gchar * content_encoding,gchar * content_description,gchar * content_id,gchar * content_disposition,gchar * content_location,const gchar * original_msgid,const gchar * disposition_notification_hdr,const gchar * filename,guint offset,guint length,gboolean short_scan)1968 static int procmime_parse_mimepart(MimeInfo *parent,
1969 gchar *content_type,
1970 gchar *content_encoding,
1971 gchar *content_description,
1972 gchar *content_id,
1973 gchar *content_disposition,
1974 gchar *content_location,
1975 const gchar *original_msgid,
1976 const gchar *disposition_notification_hdr,
1977 const gchar *filename,
1978 guint offset,
1979 guint length,
1980 gboolean short_scan)
1981 {
1982 MimeInfo *mimeinfo;
1983 MimeParser *parser = NULL;
1984 gboolean parsed = FALSE;
1985 int result = 0;
1986
1987 /* Create MimeInfo */
1988 mimeinfo = procmime_mimeinfo_new();
1989 mimeinfo->content = MIMECONTENT_FILE;
1990
1991 if (parent != NULL) {
1992 if (g_node_depth(parent->node) > 32) {
1993 /* 32 is an arbitrary value
1994 * this avoids DOSsing ourselves
1995 * with enormous messages
1996 */
1997 procmime_mimeinfo_free_all(&mimeinfo);
1998 return -1;
1999 }
2000 g_node_append(parent->node, mimeinfo->node);
2001 }
2002 mimeinfo->data.filename = g_strdup(filename);
2003 mimeinfo->offset = offset;
2004 mimeinfo->length = length;
2005
2006 if (content_type != NULL) {
2007 g_strchomp(content_type);
2008 procmime_parse_content_type(content_type, mimeinfo);
2009 } else {
2010 mimeinfo->type = MIMETYPE_TEXT;
2011 mimeinfo->subtype = g_strdup("plain");
2012 if (g_hash_table_lookup(mimeinfo->typeparameters,
2013 "charset") == NULL) {
2014 g_hash_table_insert(mimeinfo->typeparameters,
2015 g_strdup("charset"),
2016 g_strdup(
2017 conv_get_locale_charset_str_no_utf8()));
2018 }
2019 }
2020
2021 if (content_encoding != NULL) {
2022 g_strchomp(content_encoding);
2023 procmime_parse_content_encoding(content_encoding, mimeinfo);
2024 } else {
2025 mimeinfo->encoding_type = ENC_UNKNOWN;
2026 }
2027
2028 if (content_description != NULL)
2029 mimeinfo->description = g_strdup(content_description);
2030 else
2031 mimeinfo->description = NULL;
2032
2033 if (content_id != NULL)
2034 mimeinfo->id = g_strdup(content_id);
2035 else
2036 mimeinfo->id = NULL;
2037
2038 if (content_location != NULL)
2039 mimeinfo->location = g_strdup(content_location);
2040 else
2041 mimeinfo->location = NULL;
2042
2043 if (content_disposition != NULL) {
2044 g_strchomp(content_disposition);
2045 procmime_parse_content_disposition(content_disposition, mimeinfo);
2046 } else
2047 mimeinfo->disposition = DISPOSITIONTYPE_UNKNOWN;
2048
2049 /* Call parser for mime type */
2050 if ((parser = procmime_get_mimeparser_for_type(mimeinfo->type, mimeinfo->subtype)) != NULL) {
2051 parsed = procmime_mimeparser_parse(parser, mimeinfo);
2052 }
2053 if (!parsed) {
2054 switch (mimeinfo->type) {
2055 case MIMETYPE_TEXT:
2056 if (g_ascii_strcasecmp(mimeinfo->subtype, "plain") == 0 && short_scan) {
2057 return 1;
2058 }
2059 break;
2060
2061 case MIMETYPE_MESSAGE:
2062 if (g_ascii_strcasecmp(mimeinfo->subtype, "rfc822") == 0) {
2063 procmime_parse_message_rfc822(mimeinfo, short_scan);
2064 }
2065 if (g_ascii_strcasecmp(mimeinfo->subtype, "disposition-notification") == 0) {
2066 procmime_parse_disposition_notification(mimeinfo,
2067 original_msgid, disposition_notification_hdr, short_scan);
2068 }
2069 break;
2070
2071 case MIMETYPE_MULTIPART:
2072 procmime_parse_multipart(mimeinfo, short_scan);
2073 break;
2074
2075 case MIMETYPE_APPLICATION:
2076 if (g_ascii_strcasecmp(mimeinfo->subtype, "octet-stream") == 0
2077 && original_msgid && *original_msgid
2078 && disposition_notification_hdr && *disposition_notification_hdr) {
2079 procmime_parse_disposition_notification(mimeinfo,
2080 original_msgid, disposition_notification_hdr, short_scan);
2081 }
2082 break;
2083 default:
2084 break;
2085 }
2086 }
2087
2088 return result;
2089 }
2090
2091 static gchar *typenames[] = {
2092 "text",
2093 "image",
2094 "audio",
2095 "video",
2096 "application",
2097 "message",
2098 "multipart",
2099 "model",
2100 "unknown",
2101 };
2102
output_func(GNode * node,gpointer data)2103 static gboolean output_func(GNode *node, gpointer data)
2104 {
2105 guint i, depth;
2106 MimeInfo *mimeinfo = (MimeInfo *) node->data;
2107
2108 depth = g_node_depth(node);
2109 for (i = 0; i < depth; i++)
2110 g_print(" ");
2111 g_print("%s/%s (offset:%d length:%d encoding: %d)\n",
2112 (mimeinfo->type <= MIMETYPE_UNKNOWN)? typenames[mimeinfo->type] : "unknown",
2113 mimeinfo->subtype, mimeinfo->offset, mimeinfo->length, mimeinfo->encoding_type);
2114
2115 return FALSE;
2116 }
2117
output_mime_structure(MimeInfo * mimeinfo,int indent)2118 static void output_mime_structure(MimeInfo *mimeinfo, int indent)
2119 {
2120 g_node_traverse(mimeinfo->node, G_PRE_ORDER, G_TRAVERSE_ALL, -1, output_func, NULL);
2121 }
2122
procmime_scan_file_with_offset(const gchar * filename,int offset,gboolean short_scan)2123 static MimeInfo *procmime_scan_file_with_offset(const gchar *filename, int offset, gboolean short_scan)
2124 {
2125 MimeInfo *mimeinfo;
2126 GStatBuf buf;
2127
2128 if (g_stat(filename, &buf) < 0) {
2129 FILE_OP_ERROR(filename, "stat");
2130 return NULL;
2131 }
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
procmime_scan_file_full(const gchar * filename,gboolean short_scan)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
procmime_scan_file(const gchar * filename)2160 MimeInfo *procmime_scan_file(const gchar *filename)
2161 {
2162 return procmime_scan_file_full(filename, FALSE);
2163 }
2164
procmime_scan_file_short(const gchar * filename)2165 static MimeInfo *procmime_scan_file_short(const gchar *filename)
2166 {
2167 return procmime_scan_file_full(filename, TRUE);
2168 }
2169
procmime_scan_queue_file_full(const gchar * filename,gboolean short_scan)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 = claws_fopen(filename, "rb")) == NULL)
2181 return NULL;
2182 /* Skip queue header */
2183 while (claws_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 claws_fclose(fp);
2203
2204 mimeinfo = procmime_scan_file_with_offset(filename, offset, short_scan);
2205
2206 return mimeinfo;
2207 }
2208
procmime_scan_queue_file(const gchar * filename)2209 MimeInfo *procmime_scan_queue_file(const gchar *filename)
2210 {
2211 return procmime_scan_queue_file_full(filename, FALSE);
2212 }
2213
procmime_scan_queue_file_short(const gchar * filename)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
write_parameters(gpointer key,gpointer value,gpointer user_data)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.\n");
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
procmime_write_mime_header(MimeInfo * mimeinfo,FILE * fp)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
procmime_write_message_rfc822(MimeInfo * mimeinfo,FILE * fp)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 = claws_fopen(mimeinfo->data.filename, "rb")) == NULL) {
2454 FILE_OP_ERROR(mimeinfo->data.filename, "claws_fopen");
2455 return -1;
2456 }
2457 if (fseek(infp, mimeinfo->offset, SEEK_SET) < 0) {
2458 FILE_OP_ERROR(mimeinfo->data.filename, "fseek");
2459 claws_fclose(infp);
2460 return -1;
2461 }
2462 while (claws_fgets(buf, sizeof(buf), infp) == buf) {
2463 strcrchomp(buf);
2464 if (buf[0] == '\n' && buf[1] == '\0')
2465 break;
2466 if (skip && (buf[0] == ' ' || buf[0] == '\t'))
2467 continue;
2468 if (g_ascii_strncasecmp(buf, "MIME-Version:", 13) == 0 ||
2469 g_ascii_strncasecmp(buf, "Content-Type:", 13) == 0 ||
2470 g_ascii_strncasecmp(buf, "Content-Transfer-Encoding:", 26) == 0 ||
2471 g_ascii_strncasecmp(buf, "Content-Description:", 20) == 0 ||
2472 g_ascii_strncasecmp(buf, "Content-ID:", 11) == 0 ||
2473 g_ascii_strncasecmp(buf, "Content-Location:", 17) == 0 ||
2474 g_ascii_strncasecmp(buf, "Content-Disposition:", 20) == 0) {
2475 skip = TRUE;
2476 continue;
2477 }
2478 len = strlen(buf);
2479 if (claws_fwrite(buf, sizeof(gchar), len, fp) < len) {
2480 g_warning("failed to dump %"G_GSIZE_FORMAT" bytes from file", len);
2481 claws_fclose(infp);
2482 return -1;
2483 }
2484 skip = FALSE;
2485 }
2486 claws_fclose(infp);
2487 break;
2488
2489 case MIMECONTENT_MEM:
2490 len = strlen(mimeinfo->data.mem);
2491 if (claws_fwrite(mimeinfo->data.mem, sizeof(gchar), len, fp) < len) {
2492 g_warning("failed to dump %"G_GSIZE_FORMAT" bytes from mem", len);
2493 return -1;
2494 }
2495 break;
2496
2497 default:
2498 break;
2499 }
2500
2501 childnode = mimeinfo->node->children;
2502 if (childnode == NULL)
2503 return -1;
2504
2505 child = (MimeInfo *) childnode->data;
2506 if (fprintf(fp, "MIME-Version: 1.0\n") < 0) {
2507 g_warning("failed to write mime version");
2508 return -1;
2509 }
2510 if (procmime_write_mime_header(child, fp) < 0)
2511 return -1;
2512 return procmime_write_mimeinfo(child, fp);
2513 }
2514
procmime_write_multipart(MimeInfo * mimeinfo,FILE * fp)2515 static gint procmime_write_multipart(MimeInfo *mimeinfo, FILE *fp)
2516 {
2517 FILE *infp;
2518 GNode *childnode;
2519 gchar *boundary, *str, *str2;
2520 gchar buf[BUFFSIZE];
2521 gboolean firstboundary;
2522 size_t len;
2523
2524 debug_print("procmime_write_multipart\n");
2525
2526 boundary = g_hash_table_lookup(mimeinfo->typeparameters, "boundary");
2527
2528 switch (mimeinfo->content) {
2529 case MIMECONTENT_FILE:
2530 if ((infp = claws_fopen(mimeinfo->data.filename, "rb")) == NULL) {
2531 FILE_OP_ERROR(mimeinfo->data.filename, "claws_fopen");
2532 return -1;
2533 }
2534 if (fseek(infp, mimeinfo->offset, SEEK_SET) < 0) {
2535 FILE_OP_ERROR(mimeinfo->data.filename, "fseek");
2536 claws_fclose(infp);
2537 return -1;
2538 }
2539 while (claws_fgets(buf, sizeof(buf), infp) == buf) {
2540 if (IS_BOUNDARY(buf, boundary, strlen(boundary)))
2541 break;
2542 len = strlen(buf);
2543 if (claws_fwrite(buf, sizeof(gchar), len, fp) < len) {
2544 g_warning("failed to write %"G_GSIZE_FORMAT, len);
2545 claws_fclose(infp);
2546 return -1;
2547 }
2548 }
2549 claws_fclose(infp);
2550 break;
2551
2552 case MIMECONTENT_MEM:
2553 str = g_strdup(mimeinfo->data.mem);
2554 if (((str2 = strstr(str, boundary)) != NULL) && ((str2 - str) >= 2) &&
2555 (*(str2 - 1) == '-') && (*(str2 - 2) == '-'))
2556 *(str2 - 2) = '\0';
2557 len = strlen(str);
2558 if (claws_fwrite(str, sizeof(gchar), len, fp) < len) {
2559 g_warning("failed to write %"G_GSIZE_FORMAT" from mem", len);
2560 g_free(str);
2561 return -1;
2562 }
2563 g_free(str);
2564 break;
2565
2566 default:
2567 break;
2568 }
2569
2570 childnode = mimeinfo->node->children;
2571 firstboundary = TRUE;
2572 while (childnode != NULL) {
2573 MimeInfo *child = childnode->data;
2574
2575 if (firstboundary)
2576 firstboundary = FALSE;
2577 else
2578 TRY(fprintf(fp, "\n") >= 0);
2579
2580 TRY(fprintf(fp, "--%s\n", boundary) >= 0);
2581
2582 if (procmime_write_mime_header(child, fp) < 0)
2583 return -1;
2584 if (procmime_write_mimeinfo(child, fp) < 0)
2585 return -1;
2586
2587 childnode = g_node_next_sibling(childnode);
2588 }
2589 TRY(fprintf(fp, "\n--%s--\n", boundary) >= 0);
2590
2591 return 0;
2592 }
2593
procmime_write_mimeinfo(MimeInfo * mimeinfo,FILE * fp)2594 gint procmime_write_mimeinfo(MimeInfo *mimeinfo, FILE *fp)
2595 {
2596 FILE *infp;
2597 size_t len;
2598 debug_print("procmime_write_mimeinfo\n");
2599
2600 if (G_NODE_IS_LEAF(mimeinfo->node)) {
2601 switch (mimeinfo->content) {
2602 case MIMECONTENT_FILE:
2603 if ((infp = claws_fopen(mimeinfo->data.filename, "rb")) == NULL) {
2604 FILE_OP_ERROR(mimeinfo->data.filename, "claws_fopen");
2605 return -1;
2606 }
2607 copy_file_part_to_fp(infp, mimeinfo->offset, mimeinfo->length, fp);
2608 claws_fclose(infp);
2609 return 0;
2610
2611 case MIMECONTENT_MEM:
2612 len = strlen(mimeinfo->data.mem);
2613 if (claws_fwrite(mimeinfo->data.mem, sizeof(gchar), len, fp) < len)
2614 return -1;
2615 return 0;
2616
2617 default:
2618 return 0;
2619 }
2620 } else {
2621 /* Call writer for mime type */
2622 switch (mimeinfo->type) {
2623 case MIMETYPE_MESSAGE:
2624 if (g_ascii_strcasecmp(mimeinfo->subtype, "rfc822") == 0) {
2625 return procmime_write_message_rfc822(mimeinfo, fp);
2626 }
2627 break;
2628
2629 case MIMETYPE_MULTIPART:
2630 return procmime_write_multipart(mimeinfo, fp);
2631
2632 default:
2633 break;
2634 }
2635
2636 return -1;
2637 }
2638
2639 return 0;
2640 }
2641
procmime_get_part_file_name(MimeInfo * mimeinfo)2642 gchar *procmime_get_part_file_name(MimeInfo *mimeinfo)
2643 {
2644 gchar *base;
2645
2646 if ((mimeinfo->type == MIMETYPE_TEXT) && !g_ascii_strcasecmp(mimeinfo->subtype, "html"))
2647 base = g_strdup("mimetmp.html");
2648 else {
2649 const gchar *basetmp;
2650 gchar *basename;
2651
2652 basetmp = procmime_mimeinfo_get_parameter(mimeinfo, "filename");
2653 if (basetmp == NULL)
2654 basetmp = procmime_mimeinfo_get_parameter(mimeinfo, "name");
2655 if (basetmp == NULL)
2656 basetmp = "mimetmp";
2657 basename = g_path_get_basename(basetmp);
2658 if (*basename == '\0') {
2659 g_free(basename);
2660 basename = g_strdup("mimetmp");
2661 }
2662 base = conv_filename_from_utf8(basename);
2663 g_free(basename);
2664 subst_for_shellsafe_filename(base);
2665 }
2666
2667 return base;
2668 }
2669
procmime_get_part_as_string(MimeInfo * mimeinfo,gboolean null_terminate)2670 void *procmime_get_part_as_string(MimeInfo *mimeinfo,
2671 gboolean null_terminate)
2672 {
2673 FILE *infp;
2674 gchar *data;
2675 gint length, readlength;
2676
2677 cm_return_val_if_fail(mimeinfo != NULL, NULL);
2678
2679 if (mimeinfo->encoding_type != ENC_BINARY &&
2680 !procmime_decode_content(mimeinfo))
2681 return NULL;
2682
2683 if (mimeinfo->content == MIMECONTENT_MEM)
2684 return g_strdup(mimeinfo->data.mem);
2685
2686 if ((infp = claws_fopen(mimeinfo->data.filename, "rb")) == NULL) {
2687 FILE_OP_ERROR(mimeinfo->data.filename, "claws_fopen");
2688 return NULL;
2689 }
2690
2691 if (fseek(infp, mimeinfo->offset, SEEK_SET) < 0) {
2692 FILE_OP_ERROR(mimeinfo->data.filename, "fseek");
2693 claws_fclose(infp);
2694 return NULL;
2695 }
2696
2697 length = mimeinfo->length;
2698
2699 data = g_malloc(null_terminate ? length + 1 : length);
2700 if (data == NULL) {
2701 g_warning("Could not allocate %d bytes for procmime_get_part_as_string.\n",
2702 (null_terminate ? length + 1 : length));
2703 claws_fclose(infp);
2704 return NULL;
2705 }
2706
2707 readlength = claws_fread(data, length, 1, infp);
2708 if (readlength <= 0) {
2709 FILE_OP_ERROR(mimeinfo->data.filename, "fread");
2710 g_free(data);
2711 claws_fclose(infp);
2712 return NULL;
2713 }
2714
2715 claws_fclose(infp);
2716
2717 if (null_terminate)
2718 data[length] = '\0';
2719
2720 return data;
2721 }
2722
2723 /* Returns an open GInputStream. The caller should just
2724 * read mimeinfo->length bytes from it and then release it. */
procmime_get_part_as_inputstream(MimeInfo * mimeinfo)2725 GInputStream *procmime_get_part_as_inputstream(MimeInfo *mimeinfo)
2726 {
2727 cm_return_val_if_fail(mimeinfo != NULL, NULL);
2728
2729 if (mimeinfo->encoding_type != ENC_BINARY &&
2730 !procmime_decode_content(mimeinfo)) {
2731 g_warning("could not decode part");
2732 return NULL;
2733 }
2734 if (mimeinfo->content == MIMECONTENT_MEM) {
2735 /* NULL for destroy func, since we're not copying
2736 * the data for the stream. */
2737 return g_memory_input_stream_new_from_data(
2738 mimeinfo->data.mem,
2739 mimeinfo->length, NULL);
2740 } else {
2741 return g_memory_input_stream_new_from_data(
2742 procmime_get_part_as_string(mimeinfo, FALSE),
2743 mimeinfo->length, g_free);
2744 }
2745 }
2746
procmime_get_part_as_pixbuf(MimeInfo * mimeinfo,GError ** error)2747 GdkPixbuf *procmime_get_part_as_pixbuf(MimeInfo *mimeinfo, GError **error)
2748 {
2749 GdkPixbuf *pixbuf;
2750 GInputStream *stream;
2751
2752 if (error)
2753 *error = NULL;
2754
2755 stream = procmime_get_part_as_inputstream(mimeinfo);
2756 if (stream == NULL) {
2757 if (error)
2758 *error = g_error_new_literal(G_FILE_ERROR, -1, _("Could not decode part"));
2759 return NULL;
2760 }
2761
2762 pixbuf = gdk_pixbuf_new_from_stream(stream, NULL, error);
2763 g_object_unref(stream);
2764
2765 if (error && *error != NULL)
2766 return NULL;
2767
2768 return pixbuf;
2769 }
2770
2771