1// Copyright (C) 2016 The Qt Company Ltd.
2// Copyright (C) 2016 Intel Corporation.
3// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
4// Qt-Security score:significant reason:default
5
6#include "qdbusserver.h"
7#include "qdbusconnection_p.h"
8#include "qdbusconnectionmanager_p.h"
9#include "qdbusutil_p.h"
10
11#include <QtCore/private/qlocking_p.h>
12
13#ifndef QT_NO_DBUS
14
15QT_BEGIN_NAMESPACE
16
17/*!
18 \class QDBusServer
19 \inmodule QtDBus
20
21 \brief The QDBusServer class provides peer-to-peer communication
22 between processes on the same computer.
23*/
24
25/*!
26 Constructs a QDBusServer with the given \a address, and the given
27 \a parent.
28*/
29QDBusServer::QDBusServer(const QString &address, QObject *parent)
30 : QObject(parent), d(nullptr)
31{
32 if (address.isEmpty())
33 return;
34
35 if (!qdbus_loadLibDBus())
36 return;
37
38 QDBusConnectionManager *instance = QDBusConnectionManager::instance();
39 if (!instance)
40 return;
41
42 instance->createServer(address, server: this);
43 Q_ASSERT(d != nullptr);
44}
45
46/*!
47 Constructs a QDBusServer with the given \a parent. The server will listen
48 for connections in \c {/tmp} (on Unix systems) or on a TCP port bound to
49 localhost (elsewhere).
50*/
51QDBusServer::QDBusServer(QObject *parent)
52 : QDBusServer(
53#ifdef Q_OS_UNIX
54 // Use Unix sockets on Unix systems only
55 QStringLiteral("unix:tmpdir=/tmp"),
56#else
57 QStringLiteral("tcp:"),
58#endif
59 parent)
60{
61}
62
63/*!
64 Destructs a QDBusServer
65*/
66QDBusServer::~QDBusServer()
67{
68 if (!d)
69 return;
70
71 auto manager = QDBusConnectionManager::instance();
72 if (!manager)
73 return;
74
75 QWriteLocker writeLocker(&d->lock);
76 manager->removeConnections(names: d->serverConnectionNames);
77 d->serverConnectionNames.clear();
78
79 d->serverObject = nullptr;
80 d->ref.storeRelaxed(newValue: 0);
81 d->deleteLater();
82}
83
84/*!
85 Returns \c true if this QDBusServer object is connected.
86
87 If it isn't connected, you need to call the constructor again.
88*/
89bool QDBusServer::isConnected() const
90{
91 return d && d->server && q_dbus_server_get_is_connected(server: d->server);
92}
93
94/*!
95 Returns the last error that happened in this server.
96
97 This function is provided for low-level code.
98*/
99QDBusError QDBusServer::lastError() const
100{
101 return d ? d->lastError : QDBusError(QDBusError::Disconnected, QDBusUtil::disconnectedErrorMessage());
102}
103
104/*!
105 Returns the address this server is associated with.
106*/
107QString QDBusServer::address() const
108{
109 QString addr;
110 if (d && d->server) {
111 char *c = q_dbus_server_get_address(server: d->server);
112 addr = QString::fromUtf8(utf8: c);
113 q_dbus_free(memory: c);
114 }
115
116 return addr;
117}
118
119/*!
120 \since 5.3
121
122 If \a value is set to true, an incoming connection can proceed even if the
123 connecting client is not authenticated as a user.
124
125 By default, this value is false.
126
127 \sa isAnonymousAuthenticationAllowed()
128*/
129void QDBusServer::setAnonymousAuthenticationAllowed(bool value)
130{
131 if (!d)
132 return;
133
134 d->anonymousAuthenticationAllowed = value;
135}
136
137/*!
138 \since 5.3
139
140 Returns true if anonymous authentication is allowed.
141
142 \sa setAnonymousAuthenticationAllowed()
143*/
144bool QDBusServer::isAnonymousAuthenticationAllowed() const
145{
146 if (!d)
147 return false;
148
149 return d->anonymousAuthenticationAllowed;
150}
151
152/*!
153 \fn void QDBusServer::newConnection(const QDBusConnection &connection)
154
155 This signal is emitted when a new client connection \a connection is
156 established to the server.
157 */
158
159QT_END_NAMESPACE
160
161#include "moc_qdbusserver.cpp"
162
163#endif // QT_NO_DBUS
164

source code of qtbase/src/dbus/qdbusserver.cpp