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source: vbox/trunk/src/VBox/Additions/linux/lightdm-greeter/liblightdm-gobject-1.5.0/session.c@ 64588

最後變更 在這個檔案從64588是 45170,由 vboxsync 提交於 12 年 前

Additions/linux: lightdm-greeter to OSE
  • 屬性 svn:eol-style 設為 native
  • 屬性 svn:keywords 設為 Author Date Id Revision
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1/*
2 * Copyright (C) 2010 Robert Ancell.
3 * Author: Robert Ancell <[email protected]>
4 *
5 * This library is free software; you can redistribute it and/or modify it under
6 * the terms of the GNU Lesser General Public License as published by the Free
7 * Software Foundation; either version 2 or version 3 of the License.
8 * See http://www.gnu.org/copyleft/lgpl.html the full text of the license.
9 */
10
11#include <string.h>
12#include <gio/gdesktopappinfo.h>
13
14#include "lightdm/session.h"
15
16enum {
17 PROP_0,
18 PROP_KEY,
19 PROP_NAME,
20 PROP_COMMENT
21};
22
23typedef struct
24{
25 gchar *key;
26 gchar *name;
27 gchar *comment;
28} LightDMSessionPrivate;
29
30G_DEFINE_TYPE (LightDMSession, lightdm_session, G_TYPE_OBJECT);
31
32#define GET_PRIVATE(obj) G_TYPE_INSTANCE_GET_PRIVATE ((obj), LIGHTDM_TYPE_SESSION, LightDMSessionPrivate)
33
34static gboolean have_sessions = FALSE;
35static GList *local_sessions = NULL;
36static GList *remote_sessions = NULL;
37
38static gint
39compare_session (gconstpointer a, gconstpointer b)
40{
41 LightDMSessionPrivate *priv_a = GET_PRIVATE (a);
42 LightDMSessionPrivate *priv_b = GET_PRIVATE (b);
43 return strcmp (priv_a->name, priv_b->name);
44}
45
46static LightDMSession *
47load_session (GKeyFile *key_file, const gchar *key)
48{
49 gchar *domain, *name;
50 LightDMSession *session;
51 LightDMSessionPrivate *priv;
52 gchar *try_exec;
53
54 if (g_key_file_get_boolean (key_file, G_KEY_FILE_DESKTOP_GROUP, G_KEY_FILE_DESKTOP_KEY_NO_DISPLAY, NULL) ||
55 g_key_file_get_boolean (key_file, G_KEY_FILE_DESKTOP_GROUP, G_KEY_FILE_DESKTOP_KEY_HIDDEN, NULL))
56 return NULL;
57
58#ifdef G_KEY_FILE_DESKTOP_KEY_GETTEXT_DOMAIN
59 domain = g_key_file_get_string (key_file, G_KEY_FILE_DESKTOP_GROUP, G_KEY_FILE_DESKTOP_KEY_GETTEXT_DOMAIN, NULL);
60#else
61 domain = g_key_file_get_string (key_file, G_KEY_FILE_DESKTOP_GROUP, "X-GNOME-Gettext-Domain", NULL);
62#endif
63 name = g_key_file_get_locale_string (key_file, G_KEY_FILE_DESKTOP_GROUP, G_KEY_FILE_DESKTOP_KEY_NAME, domain, NULL);
64 if (!name)
65 {
66 g_warning ("Ignoring session without name");
67 g_free (domain);
68 return NULL;
69 }
70
71 try_exec = g_key_file_get_locale_string (key_file, G_KEY_FILE_DESKTOP_GROUP, G_KEY_FILE_DESKTOP_KEY_TRY_EXEC, domain, NULL);
72 if (try_exec)
73 {
74 gchar *full_path;
75
76 full_path = g_find_program_in_path (try_exec);
77 g_free (try_exec);
78
79 if (!full_path)
80 {
81 g_free (name);
82 g_free (domain);
83 return NULL;
84 }
85 g_free (full_path);
86 }
87
88 session = g_object_new (LIGHTDM_TYPE_SESSION, NULL);
89 priv = GET_PRIVATE (session);
90
91 g_free (priv->key);
92 priv->key = g_strdup (key);
93
94 g_free (priv->name);
95 priv->name = name;
96
97 g_free (priv->comment);
98 priv->comment = g_key_file_get_locale_string (key_file, G_KEY_FILE_DESKTOP_GROUP, G_KEY_FILE_DESKTOP_KEY_COMMENT, domain, NULL);
99 if (!priv->comment)
100 priv->comment = g_strdup ("");
101
102 g_free (domain);
103
104 return session;
105}
106
107static GList *
108load_sessions (const gchar *sessions_dir)
109{
110 GDir *directory;
111 GList *sessions = NULL;
112 GError *error = NULL;
113
114 directory = g_dir_open (sessions_dir, 0, &error);
115 if (error)
116 g_warning ("Failed to open sessions directory: %s", error->message);
117 g_clear_error (&error);
118 if (!directory)
119 return NULL;
120
121 while (TRUE)
122 {
123 const gchar *filename;
124 gchar *path;
125 GKeyFile *key_file;
126 gboolean result;
127
128 filename = g_dir_read_name (directory);
129 if (filename == NULL)
130 break;
131
132 if (!g_str_has_suffix (filename, ".desktop"))
133 continue;
134
135 path = g_build_filename (sessions_dir, filename, NULL);
136
137 key_file = g_key_file_new ();
138 result = g_key_file_load_from_file (key_file, path, G_KEY_FILE_NONE, &error);
139 if (error)
140 g_warning ("Failed to load session file %s: %s:", path, error->message);
141 g_clear_error (&error);
142
143 if (result)
144 {
145 gchar *key;
146 LightDMSession *session;
147
148 key = g_strndup (filename, strlen (filename) - strlen (".desktop"));
149 session = load_session (key_file, key);
150 if (session)
151 {
152 g_debug ("Loaded session %s (%s, %s)", path, GET_PRIVATE (session)->name, GET_PRIVATE (session)->comment);
153 sessions = g_list_insert_sorted (sessions, session, compare_session);
154 }
155 else
156 g_debug ("Ignoring session %s", path);
157 g_free (key);
158 }
159
160 g_free (path);
161 g_key_file_free (key_file);
162 }
163
164 g_dir_close (directory);
165
166 return sessions;
167}
168
169static void
170update_sessions (void)
171{
172 GKeyFile *config_key_file = NULL;
173 gchar *config_path = NULL;
174 gchar *xsessions_dir;
175 gchar *remote_sessions_dir;
176 gboolean result;
177 GError *error = NULL;
178
179 if (have_sessions)
180 return;
181
182 xsessions_dir = g_strdup (XSESSIONS_DIR);
183 remote_sessions_dir = g_strdup (REMOTE_SESSIONS_DIR);
184
185 /* Use session directory from configuration */
186 /* FIXME: This should be sent in the greeter connection */
187 config_path = g_build_filename (CONFIG_DIR, "lightdm.conf", NULL);
188 config_key_file = g_key_file_new ();
189 result = g_key_file_load_from_file (config_key_file, config_path, G_KEY_FILE_NONE, &error);
190 if (error)
191 g_warning ("Failed to open configuration file: %s", error->message);
192 g_clear_error (&error);
193 if (result)
194 {
195 gchar *value;
196
197 value = g_key_file_get_string (config_key_file, "LightDM", "xsessions-directory", NULL);
198 if (value)
199 {
200 g_free (xsessions_dir);
201 xsessions_dir = value;
202 }
203
204 value = g_key_file_get_string (config_key_file, "LightDM", "remote-sessions-directory", NULL);
205 if (value)
206 {
207 g_free (remote_sessions_dir);
208 remote_sessions_dir = value;
209 }
210 }
211 g_key_file_free (config_key_file);
212 g_free (config_path);
213
214 local_sessions = load_sessions (xsessions_dir);
215 remote_sessions = load_sessions (remote_sessions_dir);
216
217 g_free (xsessions_dir);
218 g_free (remote_sessions_dir);
219
220 have_sessions = TRUE;
221}
222
223/**
224 * lightdm_get_sessions:
225 *
226 * Get the available sessions.
227 *
228 * Return value: (element-type LightDMSession) (transfer none): A list of #LightDMSession
229 **/
230GList *
231lightdm_get_sessions (void)
232{
233 update_sessions ();
234 return local_sessions;
235}
236
237/**
238 * lightdm_get_remote_sessions:
239 *
240 * Get the available remote sessions.
241 *
242 * Return value: (element-type LightDMSession) (transfer none): A list of #LightDMSession
243 **/
244GList *
245lightdm_get_remote_sessions (void)
246{
247 update_sessions ();
248 return remote_sessions;
249}
250
251/**
252 * lightdm_session_get_key:
253 * @session: A #LightDMSession
254 *
255 * Get the key for a session
256 *
257 * Return value: The session key
258 **/
259const gchar *
260lightdm_session_get_key (LightDMSession *session)
261{
262 g_return_val_if_fail (LIGHTDM_IS_SESSION (session), NULL);
263 return GET_PRIVATE (session)->key;
264}
265
266/**
267 * lightdm_session_get_name:
268 * @session: A #LightDMSession
269 *
270 * Get the name for a session
271 *
272 * Return value: The session name
273 **/
274const gchar *
275lightdm_session_get_name (LightDMSession *session)
276{
277 g_return_val_if_fail (LIGHTDM_IS_SESSION (session), NULL);
278 return GET_PRIVATE (session)->name;
279}
280
281/**
282 * lightdm_session_get_comment:
283 * @session: A #LightDMSession
284 *
285 * Get the comment for a session
286 *
287 * Return value: The session comment
288 **/
289const gchar *
290lightdm_session_get_comment (LightDMSession *session)
291{
292 g_return_val_if_fail (LIGHTDM_IS_SESSION (session), NULL);
293 return GET_PRIVATE (session)->comment;
294}
295
296static void
297lightdm_session_init (LightDMSession *session)
298{
299}
300
301static void
302lightdm_session_set_property (GObject *object,
303 guint prop_id,
304 const GValue *value,
305 GParamSpec *pspec)
306{
307 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
308}
309
310static void
311lightdm_session_get_property (GObject *object,
312 guint prop_id,
313 GValue *value,
314 GParamSpec *pspec)
315{
316 LightDMSession *self;
317
318 self = LIGHTDM_SESSION (object);
319
320 switch (prop_id) {
321 case PROP_KEY:
322 g_value_set_string (value, lightdm_session_get_key (self));
323 break;
324 case PROP_NAME:
325 g_value_set_string (value, lightdm_session_get_name (self));
326 break;
327 case PROP_COMMENT:
328 g_value_set_string (value, lightdm_session_get_comment (self));
329 break;
330 default:
331 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
332 break;
333 }
334}
335
336static void
337lightdm_session_finalize (GObject *object)
338{
339 LightDMSession *self = LIGHTDM_SESSION (object);
340 LightDMSessionPrivate *priv = GET_PRIVATE (self);
341
342 g_free (priv->key);
343 g_free (priv->name);
344 g_free (priv->comment);
345}
346
347static void
348lightdm_session_class_init (LightDMSessionClass *klass)
349{
350 GObjectClass *object_class = G_OBJECT_CLASS (klass);
351
352 g_type_class_add_private (klass, sizeof (LightDMSessionPrivate));
353
354 object_class->set_property = lightdm_session_set_property;
355 object_class->get_property = lightdm_session_get_property;
356 object_class->finalize = lightdm_session_finalize;
357
358 g_object_class_install_property (object_class,
359 PROP_KEY,
360 g_param_spec_string ("key",
361 "key",
362 "Session key",
363 NULL,
364 G_PARAM_READABLE));
365 g_object_class_install_property (object_class,
366 PROP_NAME,
367 g_param_spec_string ("name",
368 "name",
369 "Session name",
370 NULL,
371 G_PARAM_READABLE));
372 g_object_class_install_property (object_class,
373 PROP_COMMENT,
374 g_param_spec_string ("comment",
375 "comment",
376 "Session comment",
377 NULL,
378 G_PARAM_READABLE));
379}
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