aboutsummaryrefslogtreecommitdiffstats
path: root/lib/ephy-file-helpers.c
blob: f66d613124135499dc7403a828acf20bf85a5812 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
/*
 *  Copyright (C) 2002 Jorn Baayen
 *  Copyright (C) 2003, 2004 Marco Pesenti Gritti
 *  Copyright (C) 2004 Christian Persch
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2, or (at your option)
 *  any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 *
 *  $Id$
 */

#include "config.h"

#include "ephy-file-helpers.h"

#include "ephy-prefs.h"
#include "eel-gconf-extensions.h"
#include "ephy-debug.h"

#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/stat.h>
#include <glib.h>
#include <glib/gi18n.h>
#include <libgnome/gnome-init.h>
#include <libgnomevfs/gnome-vfs-utils.h>
#include <libgnomevfs/gnome-vfs-file-info.h>
#include <libgnomevfs/gnome-vfs-ops.h>
#include <libxml/xmlreader.h>

/* bug http://bugzilla.gnome.org/show_bug.cgi?id=156687 */
#undef GNOME_DISABLE_DEPRECATED
#include <libgnome/gnome-desktop-item.h>

static GHashTable *files = NULL;
static GHashTable *mime_table = NULL;

static char *dot_dir = NULL;
static char *tmp_dir = NULL;
static GList *del_on_exit = NULL;

const char *
ephy_file_tmp_dir (void)
{
    if (tmp_dir == NULL)
    {
        char *partial_name;
        char *full_name;

        partial_name = g_strconcat ("epiphany-", g_get_user_name (),
                        "-XXXXXX", NULL);
        full_name = g_build_filename (g_get_tmp_dir (), partial_name,
                          NULL);
#ifdef HAVE_MKDTEMP
        tmp_dir = mkdtemp (full_name);
#else
#error no mkdtemp implementation
#endif
        g_free (partial_name);

        if (tmp_dir == NULL)
        {
            g_free (full_name);
        }
    }

    return tmp_dir;
}

char *
ephy_file_downloads_dir (void)
{
    const char *translated_folder;
    char *desktop_dir, *converted, *downloads_dir;

    /* The name of the default downloads folder */
    translated_folder = _("Downloads");

    converted = g_filename_from_utf8 (translated_folder, -1, NULL, 
                      NULL, NULL);

    desktop_dir = ephy_file_desktop_dir ();
    downloads_dir = g_build_filename (desktop_dir, converted, NULL);

    g_free (desktop_dir);
    g_free (converted);

    return downloads_dir;
}

char *
ephy_file_desktop_dir (void)
{
    char *downloads_dir;
    gboolean desktop_is_home;

    desktop_is_home = eel_gconf_get_boolean (CONF_DESKTOP_IS_HOME_DIR);

    if (desktop_is_home)
    {
        downloads_dir = g_strdup (g_get_home_dir ()); 
    }
    else
    {
        downloads_dir = g_build_filename
            (g_get_home_dir (), "Desktop", NULL);
    }

    return downloads_dir;
}

char *
ephy_file_tmp_filename (const char *base,
            const char *extension)
{
    int fd;
    char *name = g_strdup (base);

    fd = mkstemp (name);

    if (fd != -1)
    {
        unlink (name);
        close (fd);
    }
    else
    {
        g_free (name);

        return NULL;
    }

    if (extension)
    {
        char *tmp;
        tmp = g_strconcat (name, ".",
                   extension, NULL);
        g_free (name);
        name = tmp;
    }

    return name;
}

const char *
ephy_file (const char *filename)
{
    char *ret;
    int i;

    static char *paths[] =
    {
        SHARE_DIR "/",
        SHARE_DIR "/glade/",
        SHARE_DIR "/art/",
        SHARE_UNINSTALLED_DIR "/",
        SHARE_UNINSTALLED_DIR "/glade/",
        SHARE_UNINSTALLED_DIR "/art/"
    };

    g_assert (files != NULL);

    ret = g_hash_table_lookup (files, filename);
    if (ret != NULL)
        return ret;

    for (i = 0; i < (int) G_N_ELEMENTS (paths); i++)
    {
        ret = g_strconcat (paths[i], filename, NULL);
        if (g_file_test (ret, G_FILE_TEST_EXISTS) == TRUE)
        {
            g_hash_table_insert (files, g_strdup (filename), ret);
            return (const char *) ret;
        }
        g_free (ret);
    }

    g_warning (_("Failed to find %s"), filename);

    return NULL;
}

const char *
ephy_dot_dir (void)
{
    if (dot_dir == NULL)
    {
        dot_dir = g_build_filename (g_get_home_dir (),
                        GNOME_DOT_GNOME,
                        "epiphany",
                        NULL);
    }

    return dot_dir;
}

void
ephy_file_helpers_init (void)
{
    files = g_hash_table_new_full (g_str_hash,
                       g_str_equal,
                       (GDestroyNotify) g_free,
                       (GDestroyNotify) g_free);
}

static void
delete_files (GList *l)
{
    for (; l != NULL; l = l->next)
    {
        unlink (l->data);
    }
}

void
ephy_file_helpers_shutdown (void)
{
    g_hash_table_destroy (files);

    del_on_exit = g_list_reverse (del_on_exit);
    delete_files (del_on_exit);
    g_list_foreach (del_on_exit, (GFunc)g_free, NULL);
    g_list_free (del_on_exit);
    del_on_exit = NULL;

    if (mime_table != NULL)
    {
        LOG ("Destroying mime type hashtable");
        g_hash_table_destroy (mime_table);
        mime_table = NULL;
    }

    if (tmp_dir != NULL)
    {
        rmdir (tmp_dir);
        g_free (tmp_dir);
        tmp_dir = NULL;
    }

    g_free (dot_dir);
    dot_dir = NULL;
}

gboolean
ephy_ensure_dir_exists (const char *dir)
{
    if (g_file_test (dir, G_FILE_TEST_IS_DIR) == FALSE)
    {
        if (g_file_test (dir, G_FILE_TEST_EXISTS) == TRUE)
        {
            g_warning (_("%s exists, please move it out of the way."), dir);
            return FALSE;
        }

        if (mkdir (dir, 488) != 0)
        {
            g_warning (_("Failed to create directory %s."), dir);
            return FALSE;
        }
    }

    return TRUE;
}

static void
ephy_find_file_recursive (const char *path,
              const char *fname,
              GSList **list,
              gint depth,
              gint maxdepth)
{
    GDir *dir;
    const gchar *file;

    dir = g_dir_open (path, 0, NULL);
    if (dir != NULL)
    {
        while ((file = g_dir_read_name (dir)))
        {
            if (depth < maxdepth)
            {
                char *new_path = g_build_filename (path, file, NULL);
                ephy_find_file_recursive (new_path, fname, list,
                              depth + 1, maxdepth);
                g_free (new_path);
            }
            if (strcmp (file, fname) == 0)
            {
                char *new_path = g_build_filename (path, file, NULL);
                *list = g_slist_prepend (*list, new_path);
            }
        }

        g_dir_close (dir);
    }
}

GSList *
ephy_file_find (const char *path,
            const char *fname,
            gint maxdepth)
{
    GSList *ret = NULL;
    ephy_find_file_recursive (path, fname, &ret, 0, maxdepth);
    return ret;
}

gboolean
ephy_file_switch_temp_file (const char *filename,
                const char *filename_temp)
{
    char *old_file;
    gboolean old_exist;
    gboolean retval = TRUE;

    old_file = g_strconcat (filename, ".old", NULL);

    old_exist = g_file_test (filename, G_FILE_TEST_EXISTS);

    if (old_exist)
    {
        if (rename (filename, old_file) < 0)
        {
            g_warning ("Failed to rename %s to %s", filename, old_file);
            retval = FALSE;
            goto failed;
        }
    }

    if (rename (filename_temp, filename) < 0)
    {
        g_warning ("Failed to rename %s to %s", filename_temp, filename);

        if (rename (old_file, filename) < 0)
        {
            g_warning ("Failed to restore %s from %s",
                   filename, filename_temp);
        }
        retval = FALSE;
        goto failed;
    }

    if (old_exist)
    {
        if (unlink (old_file) < 0)
        {
            g_warning ("Failed to delete old file %s", old_file);
        }
    }

failed:
    g_free (old_file);

    return retval;
}

void
ephy_file_delete_on_exit (const char *path)
{
    del_on_exit = g_list_prepend (del_on_exit,
                      g_strdup (path));
}

static void
load_mime_from_xml (void)
{
    xmlTextReaderPtr reader;
    const char *xml_file;
    int ret;
    EphyMimePermission permission = EPHY_MIME_PERMISSION_UNKNOWN;

    g_return_if_fail (mime_table == NULL);

    mime_table = g_hash_table_new_full (g_str_hash, g_str_equal,
                        xmlFree, NULL);

    xml_file = ephy_file ("mime-types-permissions.xml");
    if (xml_file == NULL)
    {
        g_warning ("MIME types permissions file not found!\n");
        return;
    }

    reader = xmlNewTextReaderFilename (xml_file);
    if (reader == NULL)
    {
        g_warning ("Could not load MIME types permissions file!\n");
        return;
    }

    ret = xmlTextReaderRead (reader);
    while (ret == 1)
    {
        const xmlChar *tag;
        xmlReaderTypes type;

        tag = xmlTextReaderConstName (reader);
        type = xmlTextReaderNodeType (reader);

        if (xmlStrEqual (tag, "safe") && type == XML_READER_TYPE_ELEMENT)
        {
            permission = EPHY_MIME_PERMISSION_SAFE;
        }
        else if (xmlStrEqual (tag, "unsafe") && type == XML_READER_TYPE_ELEMENT)
        {
            permission = EPHY_MIME_PERMISSION_UNSAFE;
        }
        else if (xmlStrEqual (tag, "mime-type"))
        {
            xmlChar *type;

            type = xmlTextReaderGetAttribute (reader, "type");
            g_hash_table_insert (mime_table, type,
                         GINT_TO_POINTER (permission));
        }

        ret = xmlTextReaderRead (reader);
    }

    xmlFreeTextReader (reader);
}

EphyMimePermission
ephy_file_check_mime (const char *mime_type)
{
    EphyMimePermission permission;
    gpointer tmp;

    g_return_val_if_fail (mime_type != NULL, EPHY_MIME_PERMISSION_UNKNOWN);

    if (mime_table == NULL)
    {
        load_mime_from_xml ();
    }

    tmp = g_hash_table_lookup (mime_table, mime_type);
    if (tmp == NULL)
    {
        permission = EPHY_MIME_PERMISSION_UNKNOWN;
    }
    else
    {
        permission = GPOINTER_TO_INT (tmp);
    }

    return permission;
}

static int
launch_desktop_item (const char *desktop_file,
             const char *parameter,
             guint32 user_time,
             GError **error)
{
    GnomeDesktopItem *item = NULL;
    GList *uris = NULL;
    char *canonical;
    int ret = -1;

    item = gnome_desktop_item_new_from_file (desktop_file, 0, NULL);
    if (item == NULL) return FALSE;
        
    if (parameter != NULL)
    {
        canonical = gnome_vfs_make_uri_canonical (parameter);
        uris = g_list_append (uris, canonical);
    }

    gnome_desktop_item_set_launch_time (item, user_time);
    ret = gnome_desktop_item_launch (item, uris, 0, error);

    g_list_foreach (uris, (GFunc) g_free, NULL);
    g_list_free (uris);
    gnome_desktop_item_unref (item);

    return ret;
}

gboolean
ephy_file_launch_desktop_file (const char *filename,
                   guint32 user_time)
{
    GError *error = NULL;
    const char * const *dirs;
    char *path = NULL;
    int i, ret = -1;

    dirs = g_get_system_data_dirs ();
    if (dirs == NULL) return FALSE;

    for (i = 0; dirs[i] != NULL; i++)
    {
        g_print ("Looking in path: %s\n", dirs[i]);

        path = g_build_filename (dirs[i], "applications", filename, NULL);

        if (g_file_test (path, G_FILE_TEST_IS_REGULAR)) break;

        g_free (path);
    }

    if (path != NULL)
    {
        ret = launch_desktop_item (path, NULL, user_time, &error);

        if (ret == -1 || error != NULL)
        {
            g_warning ("Cannot launch desktop item '%s': %s\n",
                path, error ? error->message : "(unknown error)");
            g_clear_error (&error);
        }

        g_free (path);
    }

    return ret >= 0;
}

gboolean
ephy_file_launch_application (GnomeVFSMimeApplication *application,
                  const char *parameter,
                  guint32 user_time)
{
    GError *error = NULL;
    const char *desktop_file;
    int ret = -1;

    g_return_val_if_fail (application != NULL, FALSE);
    g_return_val_if_fail (parameter != NULL, FALSE);

    desktop_file = gnome_vfs_mime_application_get_desktop_file_path (application);
    if (desktop_file != NULL)
    {
        ret = launch_desktop_item (desktop_file, parameter, user_time, &error);
    }

    if (ret == -1 || error != NULL)
    {
        /* FIXME We should really warn the user here */

        g_warning ("Cannot launch application '%s': %s\n",
               gnome_vfs_mime_application_get_name (application),
               error ? error->message : "(unknown error)");
        g_clear_error (&error);
    }

    return ret >= 0;
}

gboolean
ephy_file_launch_handler (const char *mime_type,
              const char *address,
              guint32 user_time)
{
    GnomeVFSMimeApplication *app = NULL;
    GnomeVFSFileInfo *info = NULL;
    char *canonical;
    gboolean ret = FALSE;

    g_return_val_if_fail (address != NULL, FALSE);

    canonical = gnome_vfs_make_uri_canonical (address);
    g_return_val_if_fail (canonical != NULL, FALSE);

    if (mime_type != NULL)
    {
        app = gnome_vfs_mime_get_default_application (mime_type);
    }
    else
    {
        /* Sniff mime type and check if it's safe to open */
        info = gnome_vfs_file_info_new ();
        if (gnome_vfs_get_file_info (canonical, info,
                         GNOME_VFS_FILE_INFO_GET_MIME_TYPE |
                         GNOME_VFS_FILE_INFO_FORCE_SLOW_MIME_TYPE) == GNOME_VFS_OK &&
            (info->valid_fields & GNOME_VFS_FILE_INFO_FIELDS_MIME_TYPE) &&
            info->mime_type != NULL &&
            info->mime_type[0] != '\0' &&
            ephy_file_check_mime (info->mime_type) == EPHY_MIME_PERMISSION_SAFE)
        {
            /* FIXME rename tmp file to right extension ? */
            app = gnome_vfs_mime_get_default_application (info->mime_type);
        }
        gnome_vfs_file_info_unref (info);
    }

    if (app != NULL)
    {
        ret = ephy_file_launch_application (app, address, user_time);

        gnome_vfs_mime_application_free (app);
    }
    else
    {
        /* FIXME: warn user? */
        g_warning ("No handler for found or file type is unsafe!\n");
    }

    g_free (canonical);

    return ret;
}