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
190
191
192
193
194
195
196
|
/*
(This file was initially copied from qBittorrent.)
Copyright (C) 2019 Vladimir Golovnev <glassez@yandex.ru>
Frédéric Brière <fbriere@fbriere.net>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY 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 <https://www.gnu.org/licenses/>.
*/
#include "idlesession_inhibitor.h"
#include "log.h"
#include "userintf.h"
#include <QDBusConnection>
#include <QDBusConnectionInterface>
#include <QDBusMessage>
#include <QDBusPendingCall>
#include <QDBusPendingCallWatcher>
#include <QDBusPendingReply>
// There are various standards for session/power management out there.
// Fortunately, most of them are either obsolete or redundant; the following
// two should cover most, if not all, cases.
// freedesktop.org Power Management Specification (KDE, Xfce)
#define FDO_SERVICE "org.freedesktop.PowerManagement"
#define FDO_PATH "/org/freedesktop/PowerManagement/Inhibit"
#define FDO_INTERFACE "org.freedesktop.PowerManagement.Inhibit"
#define FDO_METHOD_INHIBIT "Inhibit"
#define FDO_METHOD_UNINHIBIT "UnInhibit"
// GNOME Session (GNOME, MATE)
#define GSM_SERVICE "org.gnome.SessionManager"
#define GSM_PATH "/org/gnome/SessionManager"
#define GSM_INTERFACE "org.gnome.SessionManager"
#define GSM_METHOD_INHIBIT "Inhibit"
#define GSM_METHOD_UNINHIBIT "Uninhibit"
// Additional arguments required by GNOME's Inhibit()
// - toplevel_xid: The toplevel X window identifier
// (No idea what this does; everyone just uses 0)
#define GSM_ARG_TOPLEVEL_XID 0u
// - flags: Flags that spefify what should be inhibited
// (8: Inhibit the session being marked as idle)
#define GSM_ARG_INHIBIT_FLAG 8u
// Common arguments to Inhibit()
#define INHIBIT_REASON "Call in progress"
// (Included for PRODUCT_NAME)
#include "protocol.h"
// How long (in ms) to wait for a reply to our D-Bus (un)inhibit requests
#define DBUS_CALL_TIMEOUT 1000
IdleSessionInhibitor::IdleSessionInhibitor(QObject *parent)
: QObject(parent)
{
if (!QDBusConnection::sessionBus().isConnected()) {
issueWarning(tr("D-Bus: Could not connect to session bus"));
m_state = error;
return;
}
auto interface = QDBusConnection::sessionBus().interface();
if (interface->isServiceRegistered(FDO_SERVICE)) {
m_use_gsm = false;
} else if (interface->isServiceRegistered(GSM_SERVICE)) {
m_use_gsm = true;
} else {
issueWarning(tr("D-Bus: No supported session/power management service found"));
m_state = error;
return;
}
m_state = idle;
m_intended_state = idle;
m_cookie = 0;
}
void IdleSessionInhibitor::sendRequest(bool inhibit)
{
QDBusMessage call;
if (!m_use_gsm)
call = QDBusMessage::createMethodCall(
FDO_SERVICE,
FDO_PATH,
FDO_INTERFACE,
inhibit ? FDO_METHOD_INHIBIT : FDO_METHOD_UNINHIBIT);
else
call = QDBusMessage::createMethodCall(
GSM_SERVICE,
GSM_PATH,
GSM_INTERFACE,
inhibit ? GSM_METHOD_INHIBIT : GSM_METHOD_UNINHIBIT);
QList<QVariant> args;
if (inhibit) {
args << PRODUCT_NAME;
if (m_use_gsm)
args << GSM_ARG_TOPLEVEL_XID;
args << INHIBIT_REASON;
if (m_use_gsm)
args << GSM_ARG_INHIBIT_FLAG;
} else {
args << m_cookie;
}
call.setArguments(args);
QDBusPendingCall pcall = QDBusConnection::sessionBus().asyncCall(call, DBUS_CALL_TIMEOUT);
QDBusPendingCallWatcher *watcher = new QDBusPendingCallWatcher(pcall, this);
connect(watcher, SIGNAL(finished(QDBusPendingCallWatcher*)),
this, SLOT(onAsyncReply(QDBusPendingCallWatcher*)));
}
void IdleSessionInhibitor::requestBusy()
{
m_intended_state = busy;
if (m_state != idle)
return;
m_state = request_busy;
sendRequest(true);
}
void IdleSessionInhibitor::requestIdle()
{
m_intended_state = idle;
if (m_state != busy)
return;
m_state = request_idle;
sendRequest(false);
}
void IdleSessionInhibitor::onAsyncReply(QDBusPendingCallWatcher *call)
{
switch (m_state) {
case request_idle: {
// Reply to "Uninhibit" has no return value
QDBusPendingReply<> reply = *call;
if (reply.isError()) {
issueWarning(tr("D-Bus: Reply: Error: %1").arg(reply.error().message()));
m_state = error;
} else {
m_state = idle;
// Process any pending requestBusy() call
if (m_intended_state == busy)
requestBusy();
}
break;
}
case request_busy: {
// Reply to "Inhibit" has a cookie as return value
QDBusPendingReply<uint> reply = *call;
if (reply.isError()) {
issueWarning(tr("D-Bus: Reply: Error: %1").arg(reply.error().message()));
m_state = error;
} else {
m_state = busy;
m_cookie = reply.value();
// Process any pending requestIdle() call
if (m_intended_state == idle)
requestIdle();
}
break;
}
default:
issueWarning(tr("D-Bus: Unexpected reply in state %1").arg(m_state));
m_state = error;
}
call->deleteLater();
}
void IdleSessionInhibitor::issueWarning(const QString &msg) const
{
log_file->write_report(msg.toStdString(), "IdleSessionInhibitor",
LOG_NORMAL, LOG_WARNING);
ui->cb_display_msg(msg.toStdString(), MSG_WARNING);
}
|
