plugins/Unity/Session/dbusunitysessionservice.cpp · unity8

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unity8/plugins/Unity/Session/dbusunitysessionservice.cpp

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1/*

3 *

4 * This program is free software: you can redistribute it and/or modify it under

5 * the terms of the GNU Lesser General Public License version 3, as published by

6 * the Free Software Foundation.

7 *

8 * This program is distributed in the hope that it will be useful, but WITHOUT

9 * ANY WARRANTY; without even the implied warranties of MERCHANTABILITY,

10 * SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

11 * Lesser General Public License for more details.

12 *

13 * You should have received a copy of the GNU Lesser General Public License

14 * along with this program. If not, see <http://www.gnu.org/licenses/>.

15 */

17// local

18#include "dbusunitysessionservice.h"

20// system

21#include <sys/types.h>

22#include <unistd.h>

23#include <pwd.h>

25// Qt

26#include <QDebug>

27#include <QDBusPendingCall>

28#include <QDBusReply>

29#include <QElapsedTimer>

30#include <QDateTime>

31#include <QDBusUnixFileDescriptor>

33#define LOGIN1_SERVICE QStringLiteral("org.freedesktop.login1")

34#define LOGIN1_PATH QStringLiteral("/org/freedesktop/login1")

35#define LOGIN1_IFACE QStringLiteral("org.freedesktop.login1.Manager")

36#define LOGIN1_SESSION_IFACE QStringLiteral("org.freedesktop.login1.Session")

38#define ACTIVE_KEY QStringLiteral("Active")

39#define IDLE_SINCE_KEY QStringLiteral("IdleSinceHint")

41class DBusUnitySessionServicePrivate: public QObject

42{

43 Q_OBJECT

44public:

45 QString logindSessionPath;

46 bool isSessionActive = true;

47 QElapsedTimer screensaverActiveTimer;

48 QDBusUnixFileDescriptor m_systemdInhibitFd;

50 DBusUnitySessionServicePrivate(): QObject() {

51 init();

52 checkActive();

53 }

55 void init()

56 {

57 // get our logind session path

58 QDBusMessage msg = QDBusMessage::createMethodCall(LOGIN1_SERVICE,

59 LOGIN1_PATH,

60 LOGIN1_IFACE,

61 QStringLiteral("GetSessionByPID"));

62 msg << (quint32) getpid();

64 QDBusReply<QDBusObjectPath> reply = QDBusConnection::systemBus().call(msg);

65 if (reply.isValid()) {

66 logindSessionPath = reply.value().path();

68 // start watching the Active property

69 QDBusConnection::systemBus().connect(LOGIN1_SERVICE, logindSessionPath, QStringLiteral("org.freedesktop.DBus.Properties"), QStringLiteral("PropertiesChanged"),

70 this, SLOT(onPropertiesChanged(QString,QVariantMap,QStringList)));

72 setupSystemdInhibition();

74 // re-enable the inhibition upon resume from sleep

75 QDBusConnection::systemBus().connect(LOGIN1_SERVICE, LOGIN1_PATH, LOGIN1_IFACE, QStringLiteral("PrepareForSleep"),

76 this, SLOT(onResuming(bool)));

77 } else {

78 qWarning() << "Failed to get logind session path" << reply.error().message();

79 }

80 }

82 void setupSystemdInhibition()

83 {

84 if (m_systemdInhibitFd.isValid())

85 return;

87 // inhibit systemd handling of power/sleep/lid buttons

88 // http://www.freedesktop.org/wiki/Software/systemd/inhibit

90 QDBusMessage msg = QDBusMessage::createMethodCall(LOGIN1_SERVICE, LOGIN1_PATH, LOGIN1_IFACE, QStringLiteral("Inhibit"));

91 msg << "handle-power-key:handle-suspend-key:handle-hibernate-key:handle-lid-switch"; // what

92 msg << "Unity"; // who

93 msg << "Unity8 handles power events"; // why

94 msg << "block"; // mode

96 QDBusPendingCall pendingCall = QDBusConnection::systemBus().asyncCall(msg);

97 QDBusPendingCallWatcher *watcher = new QDBusPendingCallWatcher(pendingCall, this);

98 connect(watcher, &QDBusPendingCallWatcher::finished,

99 this, [this](QDBusPendingCallWatcher* watcher) {

100

101 QDBusPendingReply<QDBusUnixFileDescriptor> reply = *watcher;

102 watcher->deleteLater();

103 if (reply.isError()) {

104 qWarning() << "Failed to inhibit systemd powersave handling" << reply.error().message();

105 return;

106 }

107

108 m_systemdInhibitFd = reply.value();

109 });

110 }

111

112

113 bool checkLogin1Call(const QString &method) const

114 {

115 QDBusMessage msg = QDBusMessage::createMethodCall(LOGIN1_SERVICE, LOGIN1_PATH, LOGIN1_IFACE, method);

116 QDBusReply<QString> reply = QDBusConnection::systemBus().call(msg);

117 return reply.isValid() && (reply == QStringLiteral("yes") || reply == QStringLiteral("challenge"));

118 }

119

120 void makeLogin1Call(const QString &method, const QVariantList &args)

121 {

122 QDBusMessage msg = QDBusMessage::createMethodCall(LOGIN1_SERVICE,

123 LOGIN1_PATH,

124 LOGIN1_IFACE,

125 method);

126 msg.setArguments(args);

127 QDBusConnection::systemBus().asyncCall(msg);

128 }

129

130 void setActive(bool active)

131 {

132 isSessionActive = active;

133

134 Q_EMIT screensaverActiveChanged(!isSessionActive);

135

136 if (isSessionActive) {

137 screensaverActiveTimer.invalidate();

138 setIdleHint(false);

139 } else {

140 screensaverActiveTimer.start();

141 setIdleHint(true);

142 }

143 }

144

145 void checkActive()

146 {

147 if (logindSessionPath.isEmpty()) {

148 qWarning() << "Invalid session path";

149 return;

150 }

151

152 QDBusMessage msg = QDBusMessage::createMethodCall(LOGIN1_SERVICE,

153 logindSessionPath,

154 QStringLiteral("org.freedesktop.DBus.Properties"),

155 QStringLiteral("Get"));

156 msg << LOGIN1_SESSION_IFACE;

157 msg << ACTIVE_KEY;

158

159 QDBusPendingCall pendingCall = QDBusConnection::systemBus().asyncCall(msg);

160 QDBusPendingCallWatcher *watcher = new QDBusPendingCallWatcher(pendingCall, this);

161 connect(watcher, &QDBusPendingCallWatcher::finished,

162 this, [this](QDBusPendingCallWatcher* watcher) {

163

164 QDBusPendingReply<QVariant> reply = *watcher;

165 watcher->deleteLater();

166 if (reply.isError()) {

167 qWarning() << "Failed to get Active property" << reply.error().message();

168 return;

169 }

170

171 setActive(reply.value().toBool());

172 });

173 }

174

175 quint32 screensaverActiveTime() const

176 {

177 if (!isSessionActive && screensaverActiveTimer.isValid()) {

178 return screensaverActiveTimer.elapsed() / 1000;

179 }

180

181 return 0;

182 }

183

184 quint64 idleSinceUSecTimestamp() const

185 {

186 QDBusMessage msg = QDBusMessage::createMethodCall(LOGIN1_SERVICE,

187 logindSessionPath,

188 QStringLiteral("org.freedesktop.DBus.Properties"),

189 QStringLiteral("Get"));

190 msg << LOGIN1_SESSION_IFACE;

191 msg << IDLE_SINCE_KEY;

192

193 QDBusReply<QVariant> reply = QDBusConnection::systemBus().call(msg);

194 if (reply.isValid()) {

195 return reply.value().value<quint64>();

196 } else {

197 qWarning() << "Failed to get IdleSinceHint property" << reply.error().message();

198 }

199

200 return 0;

201 }

202

203 void setIdleHint(bool idle)

204 {

205 QDBusMessage msg = QDBusMessage::createMethodCall(LOGIN1_SERVICE,

206 logindSessionPath,

207 LOGIN1_SESSION_IFACE,

208 QStringLiteral("SetIdleHint"));

209 msg << idle;

210 QDBusConnection::systemBus().asyncCall(msg);

211 }

212

213private Q_SLOTS:

214 void onPropertiesChanged(const QString &iface, const QVariantMap &changedProps, const QStringList &invalidatedProps)

215 {

216 Q_UNUSED(iface)

217

218 if (changedProps.contains(ACTIVE_KEY)) {

219 setActive(changedProps.value(ACTIVE_KEY).toBool());

220 } else if (invalidatedProps.contains(ACTIVE_KEY)) {

221 checkActive();

222 }

223 }

224

225 void onResuming(bool active)

226 {

227 if (!active) {

228 setupSystemdInhibition();

229 }

230 }

231

232Q_SIGNALS:

233 void screensaverActiveChanged(bool active);

234};

235

236Q_GLOBAL_STATIC(DBusUnitySessionServicePrivate, d)

237

238DBusUnitySessionService::DBusUnitySessionService()

239 : UnityDBusObject(QStringLiteral("/com/canonical/Unity/Session"), QStringLiteral("com.canonical.Unity"))

240{

241 if (!d->logindSessionPath.isEmpty()) {

242 // connect our Lock() slot to the logind's session Lock() signal

243 QDBusConnection::systemBus().connect(LOGIN1_SERVICE, d->logindSessionPath, LOGIN1_SESSION_IFACE, QStringLiteral("Lock"), this, SLOT(Lock()));

244 // ... and our Unlocked() signal to the logind's session Unlock() signal

245 // (lightdm handles the unlocking by calling logind's Unlock method which in turn emits this signal we connect to)

246 QDBusConnection::systemBus().connect(LOGIN1_SERVICE, d->logindSessionPath, LOGIN1_SESSION_IFACE, QStringLiteral("Unlock"), this, SIGNAL(Unlocked()));

247 } else {

248 qWarning() << "Failed to connect to logind's session Lock/Unlock signals";

249 }

250}

251

252void DBusUnitySessionService::Logout()

253{

254 // TODO ask the apps to quit and then emit the signal

255 Q_EMIT LogoutReady();

256 Q_EMIT logoutReady();

257}

258

259void DBusUnitySessionService::EndSession()

260{

261 const QDBusMessage msg = QDBusMessage::createMethodCall(QStringLiteral("com.ubuntu.Upstart"),

262 QStringLiteral("/com/ubuntu/Upstart"),

263 QStringLiteral("com.ubuntu.Upstart0_6"),

264 QStringLiteral("EndSession"));

265 QDBusConnection::sessionBus().asyncCall(msg);

266}

267

268bool DBusUnitySessionService::CanHibernate() const

269{

270 return d->checkLogin1Call(QStringLiteral("CanHibernate"));

271}

272

273bool DBusUnitySessionService::CanSuspend() const

274{

275 return d->checkLogin1Call(QStringLiteral("CanSuspend"));

276}

277

278bool DBusUnitySessionService::CanHybridSleep() const

279{

280 return d->checkLogin1Call(QStringLiteral("CanHybridSleep"));

281}

282

283bool DBusUnitySessionService::CanReboot() const

284{

285 return d->checkLogin1Call(QStringLiteral("CanReboot"));

286}

287

288bool DBusUnitySessionService::CanShutdown() const

289{

290 return d->checkLogin1Call(QStringLiteral("CanPowerOff"));

291}

292

293bool DBusUnitySessionService::CanLock() const

294{

295 return true; // FIXME

296}

297

298QString DBusUnitySessionService::UserName() const

299{

300 struct passwd *p = getpwuid(geteuid());

301 if (p) {

302 return QString::fromUtf8(p->pw_name);

303 }

304

305 return QString();

306}

307

308QString DBusUnitySessionService::RealName() const

309{

310 struct passwd *p = getpwuid(geteuid());

311 if (p) {

312 const QString gecos = QString::fromLocal8Bit(p->pw_gecos);

313 if (!gecos.isEmpty()) {

314 const QStringList splitGecos = gecos.split(QLatin1Char(','));

315 return splitGecos.first();

316 }

317 }

318

319 return QString();

320}

321

322QString DBusUnitySessionService::HostName() const

323{

324 char hostName[512];

325 if (gethostname(hostName, sizeof(hostName)) == -1) {

326 qWarning() << "Could not determine local hostname";

327 return QString();

328 }

329 hostName[sizeof(hostName) - 1] = '\0';

330 return QString::fromLocal8Bit(hostName);

331}

332

333void DBusUnitySessionService::PromptLock()

334{

335 Q_EMIT LockRequested();

336 Q_EMIT lockRequested();

337}

338

339void DBusUnitySessionService::Lock()

340{

341 // lock the session using the org.freedesktop.DisplayManager system DBUS service

342 const QString sessionPath = QString::fromLocal8Bit(qgetenv("XDG_SESSION_PATH"));

343 QDBusMessage msg = QDBusMessage::createMethodCall(QStringLiteral("org.freedesktop.DisplayManager"),

344 sessionPath,

345 QStringLiteral("org.freedesktop.DisplayManager.Session"),

346 QStringLiteral("Lock"));

347

348 QDBusPendingCall pendingCall = QDBusConnection::systemBus().asyncCall(msg);

349 QDBusPendingCallWatcher *watcher = new QDBusPendingCallWatcher(pendingCall, this);

350 connect(watcher, &QDBusPendingCallWatcher::finished,

351 this, [this](QDBusPendingCallWatcher* watcher) {

352

353 QDBusPendingReply<QVariant> reply = *watcher;

354 watcher->deleteLater();

355 if (reply.isError()) {

356 qWarning() << "Lock call failed" << reply.error().message();

357 return;

358 }

359

360 // emit Locked when the call succeeds

361 Q_EMIT Locked();

362 });

363}

364

365bool DBusUnitySessionService::IsLocked() const

366{

367 return !d->isSessionActive;

368}

369

370void DBusUnitySessionService::RequestLogout()

371{

372 Q_EMIT LogoutRequested(false);

373 Q_EMIT logoutRequested(false);

374}

375

376void DBusUnitySessionService::Reboot()

377{

378 d->makeLogin1Call(QStringLiteral("Reboot"), {false});

379}

380

381void DBusUnitySessionService::RequestReboot()

382{

383 Q_EMIT RebootRequested(false);

384 Q_EMIT rebootRequested(false);

385}

386

387void DBusUnitySessionService::Shutdown()

388{

389 d->makeLogin1Call(QStringLiteral("PowerOff"), {false});

390}

391

392void DBusUnitySessionService::Suspend()

393{

394 d->makeLogin1Call(QStringLiteral("Suspend"), {false});

395}

396

397void DBusUnitySessionService::Hibernate()

398{

399 d->makeLogin1Call(QStringLiteral("Hibernate"), {false});

400}

401

402void DBusUnitySessionService::HybridSleep()

403{

404 d->makeLogin1Call(QStringLiteral("HybridSleep"), {false});

405}

406

407void DBusUnitySessionService::RequestShutdown()

408{

409 Q_EMIT ShutdownRequested(false);

410 Q_EMIT shutdownRequested(false);

411}

412

413enum class Action : unsigned

414{

415 LOGOUT = 0,

416 SHUTDOWN,

417 REBOOT,

418 NONE

419};

420

421

422void performAsyncUnityCall(const QString &method)

423{

424 const QDBusMessage msg = QDBusMessage::createMethodCall(QStringLiteral("com.canonical.Unity"),

425 QStringLiteral("/com/canonical/Unity/Session"),

426 QStringLiteral("com.canonical.Unity.Session"),

427 method);

428 QDBusConnection::sessionBus().asyncCall(msg);

429}

430

431

432DBusGnomeSessionManagerWrapper::DBusGnomeSessionManagerWrapper()

433 : UnityDBusObject(QStringLiteral("/org/gnome/SessionManager/EndSessionDialog"), QStringLiteral("com.canonical.Unity"))

434{

435}

436

437void DBusGnomeSessionManagerWrapper::Open(const unsigned type, const unsigned arg_1, const unsigned max_wait, const QList<QDBusObjectPath> &inhibitors)

438{

439 Q_UNUSED(arg_1);

440 Q_UNUSED(max_wait);

441 Q_UNUSED(inhibitors);

442

443 switch (static_cast<Action>(type))

444 {

445 case Action::LOGOUT:

446 performAsyncUnityCall(QStringLiteral("RequestLogout"));

447 break;

448

449 case Action::REBOOT:

450 performAsyncUnityCall(QStringLiteral("RequestReboot"));

451 break;

452

453 case Action::SHUTDOWN:

454 performAsyncUnityCall(QStringLiteral("RequestShutdown"));

455 break;

456

457 default:

458 break;

459 }

460}

461

462

463DBusGnomeScreensaverWrapper::DBusGnomeScreensaverWrapper()

464 : UnityDBusObject(QStringLiteral("/org/gnome/ScreenSaver"), QStringLiteral("org.gnome.ScreenSaver"))

465{

466 connect(d, &DBusUnitySessionServicePrivate::screensaverActiveChanged, this, &DBusGnomeScreensaverWrapper::ActiveChanged);

467}

468

469bool DBusGnomeScreensaverWrapper::GetActive() const

470{

471 return !d->isSessionActive; // return whether the session is not active

472}

473

474void DBusGnomeScreensaverWrapper::SetActive(bool lock)

475{

476 if (lock) {

477 Lock();

478 }

479}

480

481void DBusGnomeScreensaverWrapper::Lock()

482{

483 performAsyncUnityCall(QStringLiteral("Lock"));

484}

485

486quint32 DBusGnomeScreensaverWrapper::GetActiveTime() const

487{

488 return d->screensaverActiveTime();

489}

490

491void DBusGnomeScreensaverWrapper::SimulateUserActivity()

492{

493 d->setIdleHint(false);

494}

495

496

497DBusScreensaverWrapper::DBusScreensaverWrapper()

498 : UnityDBusObject(QStringLiteral("/org/freedesktop/ScreenSaver"), QStringLiteral("org.freedesktop.ScreenSaver"))

499{

500 QDBusConnection::sessionBus().registerObject(QStringLiteral("/ScreenSaver"), this, QDBusConnection::ExportScriptableContents); // compat path, also register here

501 connect(d, &DBusUnitySessionServicePrivate::screensaverActiveChanged, this, &DBusScreensaverWrapper::ActiveChanged);

502}

503

504bool DBusScreensaverWrapper::GetActive() const

505{

506 return !d->isSessionActive; // return whether the session is not active

507}

508

509bool DBusScreensaverWrapper::SetActive(bool lock)

510{

511 if (lock) {

512 Lock();