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hostservice.cpp
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hostservice.cpp
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/*
* Copyright (C) 2016 Jolla Ltd
* Contact: Andrew den Exter <andrew.den.exter@jolla.com>
*
* You may use this file under the terms of the BSD license as follows:
*
* "Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Nemo Mobile nor the names of its contributors
* may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
*/
#include "hostservice.h"
#include "hostauthenticator.h"
#include "hostdevicelock.h"
#include "hostdevicelocksettings.h"
#include "hostdevicereset.h"
#include "hostencryptionsettings.h"
#include "hostfingerprintsensor.h"
#include "hostfingerprintsettings.h"
#include <QDBusConnection>
#include <QDBusMetaType>
#include <QDir>
#include <QThread>
#include <dbus/dbus.h>
#include <systemd/sd-daemon.h>
namespace NemoDeviceLock
{
class ConnectionMonitor : public QObject
{
Q_OBJECT
public:
ConnectionMonitor(HostService *service, const QString &connectionName)
: QObject(service)
, m_service(service)
, m_connectionName(connectionName)
{
}
public slots:
void disconnected()
{
deleteLater();
for (const auto object : m_service->m_objects) {
object->clientDisconnected(m_connectionName);
}
QDBusConnection::disconnectFromPeer(m_connectionName);
}
private:
HostService * const m_service;
const QString m_connectionName;
};
HostService::HostService(const QVector<HostObject *> objects, QObject *parent)
: QDBusServer(QStringLiteral("unix:path=/run/nemo-devicelock/socket"), parent)
, m_objects(objects)
{
setAnonymousAuthenticationAllowed(true);
connect(this, &QDBusServer::newConnection, this, &HostService::connectionReady);
qDBusRegisterMetaType<NemoDeviceLock::Fingerprint>();
qDBusRegisterMetaType<QVector<NemoDeviceLock::Fingerprint>>();
if (!QDBusConnection::systemBus().registerService(QStringLiteral("org.nemomobile.devicelock"))) {
qCWarning(daemon, "Failed to register service org.nemomobile.devicelock. %s",
qPrintable(QDBusConnection::systemBus().lastError().message()));
}
if (isConnected()) {
sd_notify(0, "READY=1");
} else {
qCCritical(daemon, "Failed to start device lock DBus server: %s",
qPrintable(lastError().message()));
}
}
HostService::HostService(
HostAuthenticator *authenticator,
HostDeviceLock *deviceLock,
HostDeviceLockSettings *deviceLockSettings,
HostDeviceReset *deviceReset,
HostEncryptionSettings *encryptionSettings,
HostFingerprintSensor *fingerprintSensor,
HostFingerprintSettings *fingerprintSettings,
QObject *parent)
: HostService({
authenticator,
deviceLock,
deviceLockSettings,
deviceReset,
encryptionSettings,
fingerprintSensor,
fingerprintSettings }
, parent)
{
}
HostService::~HostService()
{
}
static void registerObject(QDBusConnection &connection, const QString &path, QObject *object)
{
if (!connection.registerObject(path, object)) {
qCWarning(daemon, "Failed to register object on path %s", qPrintable(path));
}
}
void HostService::connectionReady(const QDBusConnection &newConnection)
{
qCDebug(daemon, "New connection %s", qPrintable(newConnection.name()));
QDBusConnection connection(newConnection);
const auto monitor = new ConnectionMonitor(this, connection.name());
if (!connection.connect(
QString(),
QStringLiteral("/org/freedesktop/DBus/Local"),
QStringLiteral("org.freedesktop.DBus.Local"),
QStringLiteral("Disconnected"),
monitor,
SLOT(disconnected()))) {
delete monitor;
qCWarning(daemon, "Failed to connect to disconnect signal");
}
// The PID and UID of the connecting process can't be acquired until after the connection
// is authenticated which is done concurrently to the invokation of this slot. Block until
// the connection is authenticated or disconnected before trying to decide which services
// a process should have access to.
auto internalConnection = static_cast<DBusConnection *>(connection.internalPointer());
while (dbus_connection_get_is_connected(internalConnection)
&& !dbus_connection_get_is_authenticated(internalConnection)) {
QThread::usleep(100);
}
const auto connectionName = connection.name();
for (const auto object : m_objects) {
if (object->authorizeConnection(connection)) {
registerObject(connection, object->path(), object);
object->clientConnected(connectionName);
}
}
}
}
#include "hostservice.moc"