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
|
/*
A small helper for locking the screen.
Copyright 2009 Canonical Ltd.
Authors:
Ted Gould <ted@canonical.com>
This program is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License version 3, as published
by the Free Software Foundation.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranties of
MERCHANTABILITY, SATISFACTORY QUALITY, 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, see <http://www.gnu.org/licenses/>.
*/
#include <glib/gi18n.h>
#include <gio/gio.h>
#include "lock-helper.h"
#define SCREENSAVER_SCHEMA "org.gnome.desktop.screensaver"
#define SCREENSAVER_LOCK_ENABLED_KEY "lock-enabled"
static GDBusProxy * gss_proxy = NULL;
static GMainLoop * gss_mainloop = NULL;
static gboolean is_guest = FALSE;
static GSettings * settings = NULL;
void build_gss_proxy (void);
/* This is our logic on whether the screen should be locked
or not. It effects everything else. */
gboolean
will_lock_screen (void)
{
if (is_guest) {
return FALSE;
}
if (settings == NULL) {
settings = g_settings_new (SCREENSAVER_SCHEMA);
}
return g_settings_get_boolean (settings, SCREENSAVER_LOCK_ENABLED_KEY);
}
/* When the screensave goes active,
if we've got a mainloop running we should quit it. */
static void
on_gss_signal (GDBusProxy *proxy,
gchar *sender_name,
gchar *signal_name,
GVariant *parameters,
gpointer user_data)
{
g_debug ("%s sender_name: %s", G_STRLOC, sender_name);
g_debug ("%s signal_name: %s", G_STRLOC, signal_name);
if (!g_strcmp0 (signal_name, "ActiveChanged"))
{
gboolean active = FALSE;
g_variant_get_child (parameters, 0, "b", &active);
g_debug ("%s active: %i", G_STRLOC, active);
if (active && gss_mainloop != NULL)
{
g_main_loop_quit(gss_mainloop);
}
}
}
static gboolean
get_greeter_mode (void)
{
const gchar *var;
var = g_getenv("INDICATOR_GREETER_MODE");
return (g_strcmp0(var, "1") == 0);
}
/* Build the gss proxy and set up its signals */
void
build_gss_proxy (void)
{
if (gss_proxy == NULL) {
if (get_greeter_mode ())
return; /* Don't start/lock the screensaver from the login screen */
GError * error = NULL;
gss_proxy = g_dbus_proxy_new_for_bus_sync (G_BUS_TYPE_SESSION,
G_DBUS_PROXY_FLAGS_NONE,
NULL,
"org.gnome.ScreenSaver",
"/",
"org.gnome.ScreenSaver",
NULL,
&error);
if (error != NULL) {
g_message ("Unable to get ScreenSaver proxy: %s", error->message);
g_error_free (error);
}
g_return_if_fail (gss_proxy != NULL);
g_signal_connect (gss_proxy, "g-signal", G_CALLBACK(on_gss_signal), NULL);
}
return;
}
/* This is a timeout, we only want to wait for the screen to
lock for a little bit, but not forever. */
static gboolean
activate_timeout (gpointer data)
{
/* Clear the ID for the timeout */
guint * address = (guint *)data;
*address = 0;
/* Quit the mainloop */
if (gss_mainloop != NULL) {
g_main_loop_quit(gss_mainloop);
}
return FALSE;
}
/* A fun little function to actually lock the screen.
If that's what you want, let's do it! */
void
lock_screen (DbusmenuMenuitem * mi, guint timestamp, gpointer data)
{
g_debug("Lock Screen");
build_gss_proxy();
g_return_if_fail(gss_proxy != NULL);
GError * error = NULL;
GVariant * ret = g_dbus_proxy_call_sync (gss_proxy,
"Lock",
NULL,
G_DBUS_CALL_FLAGS_NONE,
-1,
NULL,
&error);
g_variant_unref (ret);
if (error != NULL) {
g_warning ("Unable to lock: %s", error->message);
g_error_free (error);
}
if (gss_mainloop == NULL) {
gss_mainloop = g_main_loop_new(NULL, FALSE);
}
guint timer = g_timeout_add_seconds(1, activate_timeout, &timer);
g_main_loop_run(gss_mainloop);
if (timer != 0) {
g_source_remove(timer);
}
return;
}
/* Do what it takes to make the lock screen function work
and be happy. */
gboolean
lock_screen_setup (gpointer data)
{
if (!g_strcmp0(g_get_user_name(), "guest")) {
is_guest = TRUE;
}
return FALSE;
}
|
