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
|
/*
* dbus-spy.c - A gobject subclass to watch dbus for org.freedesktop.Notification.Notify messages.
*/
#include "dbus-spy.h"
enum {
MESSAGE_RECEIVED,
LAST_SIGNAL
};
typedef struct _IdleMessage IdleMessage;
struct _IdleMessage
{
DBusSpy *spy;
Notification *note;
};
static guint signals[LAST_SIGNAL];
static void dbus_spy_class_init(DBusSpyClass *klass);
static void dbus_spy_init(DBusSpy *self);
static void dbus_spy_dispose(GObject *object);
static void add_filter(DBusSpy *self);
static void bus_get_cb(GObject *source_object, GAsyncResult *res, gpointer user_data);
static GDBusMessage *message_filter(GDBusConnection *connection, GDBusMessage *message,
gboolean incoming, gpointer user_data);
static gboolean idle_message_emit(gpointer user_data);
#define MATCH_STRING "eavesdrop=true,type='method_call',interface='org.freedesktop.Notifications',member='Notify'"
G_DEFINE_TYPE (DBusSpy, dbus_spy, G_TYPE_OBJECT);
static void
dbus_spy_class_init(DBusSpyClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS(klass);
g_type_class_add_private(klass, sizeof(DBusSpyPrivate));
object_class->dispose = dbus_spy_dispose;
signals[MESSAGE_RECEIVED] =
g_signal_new(DBUS_SPY_SIGNAL_MESSAGE_RECEIVED,
G_TYPE_FROM_CLASS(klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET(DBusSpyClass, message_received),
NULL, NULL,
g_cclosure_marshal_VOID__OBJECT,
G_TYPE_NONE,
1, NOTIFICATION_TYPE);
}
static void
bus_get_cb(GObject *source_object, GAsyncResult *res, gpointer user_data)
{
GError *error = NULL;
GDBusConnection *connection = g_bus_get_finish(res, &error);
if(error != NULL) {
g_warning("Could not get a connection to the dbus session bus: %s\n", error->message);
g_error_free(error);
return;
}
DBusSpy *self = DBUS_SPY(user_data);
g_return_if_fail(self != NULL);
if(self->priv->connection_cancel != NULL) {
g_object_unref(self->priv->connection_cancel);
self->priv->connection_cancel = NULL;
}
self->priv->connection = connection;
add_filter(self);
}
static void
add_filter(DBusSpy *self)
{
GDBusMessage *message;
GVariant *body;
GError *error = NULL;
message = g_dbus_message_new_method_call("org.freedesktop.DBus", "/org/freedesktop/DBus",
"org.freedesktop.DBus", "AddMatch");
body = g_variant_new_parsed("(%s,)", MATCH_STRING);
g_dbus_message_set_body(message, body);
g_dbus_connection_send_message(self->priv->connection,
message,
G_DBUS_SEND_MESSAGE_FLAGS_NONE,
NULL,
&error);
if(error != NULL) {
g_warning("Failed to send AddMatch message: %s\n", error->message);
g_error_free(error);
return;
}
g_dbus_connection_add_filter(self->priv->connection, message_filter, self, NULL);
}
static GDBusMessage*
message_filter(GDBusConnection *connection, GDBusMessage *message, gboolean incoming, gpointer user_data)
{
if(!incoming) return message;
GDBusMessageType type = g_dbus_message_get_message_type(message);
const gchar *interface = g_dbus_message_get_interface(message);
const gchar *member = g_dbus_message_get_member(message);
if((type == G_DBUS_MESSAGE_TYPE_METHOD_CALL)
&& (g_strcmp0(interface, "org.freedesktop.Notifications") == 0)
&& (g_strcmp0(member, "Notify") == 0))
{
DBusSpy *spy = DBUS_SPY(user_data);
Notification *note = notification_new_from_dbus_message(message);
IdleMessage *im = g_new0(IdleMessage, 1);
im->spy = spy;
im->note = note;
g_idle_add(idle_message_emit, im);
g_object_unref(message);
message = NULL;
}
return message;
}
static gboolean
idle_message_emit(gpointer user_data)
{
IdleMessage *message = (IdleMessage *)user_data;
g_signal_emit(message->spy, signals[MESSAGE_RECEIVED], 0, message->note);
g_free(message);
return FALSE;
}
static void
dbus_spy_init(DBusSpy *self)
{
self->priv = DBUS_SPY_GET_PRIVATE(self);
self->priv->connection = NULL;
self->priv->connection_cancel = g_cancellable_new();
g_bus_get(G_BUS_TYPE_SESSION,
self->priv->connection_cancel,
bus_get_cb,
self);
}
static void
dbus_spy_dispose(GObject *object)
{
DBusSpy *self = DBUS_SPY(object);
if(self->priv->connection_cancel != NULL) {
g_cancellable_cancel(self->priv->connection_cancel);
g_object_unref(self->priv->connection_cancel);
self->priv->connection_cancel = NULL;
}
if(self->priv->connection != NULL) {
g_dbus_connection_close(self->priv->connection, NULL, NULL, NULL);
g_object_unref(self->priv->connection);
self->priv->connection = NULL;
}
G_OBJECT_CLASS(dbus_spy_parent_class)->dispose(object);
}
DBusSpy*
dbus_spy_new(void)
{
return DBUS_SPY(g_object_new(DBUS_SPY_TYPE, NULL));
}
|
