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1 /*
2 * Copyright (C) 2009 Jonathan Matthew <jonathan@d14n.org>
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
18 */
19
20 #include <glib.h>
21
22 #define G_UDEV_API_IS_SUBJECT_TO_CHANGE
23 #include <gudev/gudev.h>
24
25 #include "mediaplayerid.h"
26 #include "mpid-private.h"
27
28 void
29 mpid_device_db_lookup (MPIDDevice *device)
30 {
31 GUdevClient *client;
32 GUdevDevice *udevice = NULL;
33 char *devpath;
34 const char *device_file;
35 char *subsystems[] = { "usb", NULL };
36
37 devpath = mpid_device_get_device_path (device);
38 if (devpath == NULL) {
39 device->error = MPID_ERROR_NO_DEVICE_PATH;
40 return;
41 }
42
43 client = g_udev_client_new ((const char * const *)subsystems);
44 if (client != NULL) {
45 udevice = g_udev_client_query_by_device_file (client, devpath);
46 if (udevice != NULL) {
47
48 /* get vendor and model names, UUID, and serial */
49 device->model = g_strdup (g_udev_device_get_property (udevice, "ID_MODEL"));
50 device->vendor = g_strdup (g_udev_device_get_property (udevice, "ID_VENDOR"));
51 device->fs_uuid = g_strdup (g_udev_device_get_property (udevice, "ID_FS_UUID"));
52 device->serial = g_strdup (g_udev_device_get_property (udevice, "ID_SERIAL"));
53
54 /* get media player information */
55 device_file = g_udev_device_get_property (udevice, "ID_MEDIA_PLAYER");
56 if (device_file != NULL) {
57 mpid_debug ("found ID_MEDIA_PLAYER tag %s for device %s\n", device_file, devpath);
58 mpid_find_and_read_device_file (device, device_file);
59 } else {
60 mpid_debug ("device %s has no ID_MEDIA_PLAYER tag in udev\n", devpath);
61 device->error = MPID_ERROR_NOT_MEDIA_PLAYER;
62 }
63 } else {
64 mpid_debug ("unable to find device %s in udev\n", devpath);
65 device->error = MPID_ERROR_MECHANISM_FAILED;
66 }
67 } else {
68 mpid_debug ("unable to create udev client\n");
69 device->error = MPID_ERROR_MECHANISM_FAILED;
70 }
71
72 g_free (devpath);
73 if (udevice != NULL) {
74 g_object_unref (udevice);
75 }
76 if (client != NULL) {
77 g_object_unref (client);
78 }
79 }