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
|
/*
* Copyright 2016 Canonical Ltd.
*
* 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/>.
*
* Authors:
* Charles Kerr <charles.kerr@canonical.com>
*/
#include <src/dbus-names.h>
#include <src/greeter.h>
#include <gio/gio.h>
class UnityGreeter::Impl
{
public:
Impl():
m_cancellable{g_cancellable_new()}
{
g_bus_get(G_BUS_TYPE_SESSION, m_cancellable, on_bus_ready_static, this);
}
~Impl()
{
g_cancellable_cancel(m_cancellable);
g_clear_object(&m_cancellable);
if (m_subscription_id != 0)
g_dbus_connection_signal_unsubscribe (m_bus, m_subscription_id);
g_clear_object(&m_bus);
}
core::Property<bool>& is_active()
{
return m_is_active;
}
private:
static void on_bus_ready_static(GObject* /*source*/, GAsyncResult* res, gpointer gself)
{
GError* error {};
auto bus = g_bus_get_finish (res, &error);
if (error != nullptr) {
if (!g_error_matches(error, G_IO_ERROR, G_IO_ERROR_CANCELLED))
g_warning("UsbSnap: Error getting session bus: %s", error->message);
g_clear_error(&error);
} else {
static_cast<Impl*>(gself)->on_bus_ready(bus);
}
g_clear_object(&bus);
}
void on_bus_ready(GDBusConnection* bus)
{
m_bus = G_DBUS_CONNECTION(g_object_ref(G_OBJECT(bus)));
g_dbus_connection_call(m_bus,
DBusNames::UnityGreeter::NAME,
DBusNames::UnityGreeter::PATH,
DBusNames::Properties::INTERFACE,
"Get",
g_variant_new("(ss)", DBusNames::UnityGreeter::INTERFACE, "IsActive"),
G_VARIANT_TYPE("(v)"),
G_DBUS_CALL_FLAGS_NONE,
-1,
m_cancellable,
on_get_is_active_ready,
this);
m_subscription_id = g_dbus_connection_signal_subscribe(m_bus,
DBusNames::UnityGreeter::NAME,
DBusNames::Properties::INTERFACE,
DBusNames::Properties::PropertiesChanged::NAME,
DBusNames::UnityGreeter::PATH,
DBusNames::UnityGreeter::INTERFACE,
G_DBUS_SIGNAL_FLAGS_NONE,
on_properties_changed_signal,
this,
nullptr);
}
static void on_get_is_active_ready(GObject* source, GAsyncResult* res, gpointer gself)
{
GError* error {};
auto v = g_dbus_connection_call_finish(G_DBUS_CONNECTION(source), res, &error);
if (error != nullptr) {
if (!g_error_matches(error, G_IO_ERROR, G_IO_ERROR_CANCELLED))
g_warning("UsbSnap: Error getting session bus: %s", error->message);
g_clear_error(&error);
} else {
GVariant* is_active {};
g_variant_get_child(v, 0, "v", &is_active);
static_cast<Impl*>(gself)->m_is_active.set(g_variant_get_boolean(is_active));
g_clear_pointer(&is_active, g_variant_unref);
}
g_clear_pointer(&v, g_variant_unref);
}
static void on_properties_changed_signal(GDBusConnection* /*connection*/,
const gchar* /*sender_name*/,
const gchar* object_path,
const gchar* interface_name,
const gchar* signal_name,
GVariant* parameters,
gpointer gself)
{
g_return_if_fail(!g_strcmp0(object_path, DBusNames::UnityGreeter::PATH));
g_return_if_fail(!g_strcmp0(interface_name, DBusNames::Properties::INTERFACE));
g_return_if_fail(!g_strcmp0(signal_name, DBusNames::Properties::PropertiesChanged::NAME));
g_return_if_fail(g_variant_is_of_type(parameters, G_VARIANT_TYPE(DBusNames::Properties::PropertiesChanged::ARGS_VARIANT_TYPE)));
auto v = g_variant_get_child_value (parameters, 1);
gboolean is_active {};
if (g_variant_lookup(v, "IsActive", "b", &is_active))
{
g_debug("%s is_active changed to %d", G_STRLOC, int(is_active));
static_cast<Impl*>(gself)->m_is_active.set(is_active);
}
g_clear_pointer(&v, g_variant_unref);
}
core::Property<bool> m_is_active;
GCancellable* m_cancellable {};
GDBusConnection* m_bus {};
unsigned int m_subscription_id {};
};
/***
****
***/
Greeter::Greeter() =default;
Greeter::~Greeter() =default;
UnityGreeter::UnityGreeter():
impl{new Impl{}}
{
}
UnityGreeter::~UnityGreeter() =default;
core::Property<bool>&
UnityGreeter::is_active()
{
return impl->is_active();
}
|
