Add PowerManager service.

On Android 4.4 we need to respond to wake-lock requests to prevent
StageFrigh from committing suicide.

Change-Id: Ie2c261c0c1b962a63ba8516fefaac71a0ec3a54e
Reviewed-by: Eirik Aavitsland <eirik.aavitsland@digia.com>

4 files changed, 157 insertions, 3 deletions

diff --git a/src/doppelganger/doppelganger.pro b/src/doppelganger/doppelganger.pro
index fc337df..40c7650 100644
--- a/src/doppelganger/doppelganger.pro
+++ b/src/doppelganger/doppelganger.pro
@@ -3,16 +3,18 @@ QT -= core gui
 TARGET = doppelganger
 
 LIBS += -lutils -lbinder -lcutils \
-        -L$${ANDROID_PRODUCT_OUT}/obj/STATIC_LIBRARIES/libscheduling_policy_intermediates -lscheduling_policy
+        -L$${ANDROID_PRODUCT_OUT}/obj/STATIC_LIBRARIES/libscheduling_policy_intermediates -lscheduling_policy -lpowermanager
 
 TEMPLATE = app
 
 SOURCES += main.cpp \
     permissioncontroller.cpp \
-    schedulingpolicyservice.cpp
+    schedulingpolicyservice.cpp \
+    powermanager.cpp
 
 HEADERS += \
     permissioncontroller.h \
-    schedulingpolicyservice.h
+    schedulingpolicyservice.h \
+    powermanager.h
 
 load(qt_tool)
diff --git a/src/doppelganger/main.cpp b/src/doppelganger/main.cpp
index e4a06c8..6d81991 100644
--- a/src/doppelganger/main.cpp
+++ b/src/doppelganger/main.cpp
@@ -20,6 +20,7 @@
 
 #include "permissioncontroller.h"
 #include "schedulingpolicyservice.h"
+#include "powermanager.h"
 
 using namespace android;
 
@@ -28,5 +29,6 @@ int main(int, char *[])
     sp<ProcessState> proc(ProcessState::self());
     SchedulingPolicyService::instantiate();
     PermissionController::instantiate();
+    PowerManager::instantiate();
     IPCThreadState::self()->joinThreadPool();
 }
diff --git a/src/doppelganger/powermanager.cpp b/src/doppelganger/powermanager.cpp
new file mode 100644
index 0000000..47ab02f
--- /dev/null
+++ b/src/doppelganger/powermanager.cpp
@@ -0,0 +1,88 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Digia Plc
+** All rights reserved.
+** For any questions to Digia, please use the contact form at
+** http://qt.digia.com/
+**
+** This file is part of Qt Enterprise Embedded.
+**
+** Licensees holding valid Qt Enterprise licenses may use this file in
+** accordance with the Qt Enterprise License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.
+**
+** If you have questions regarding the use of this file, please use
+** the contact form at http://qt.digia.com/
+**
+****************************************************************************/
+
+#include "powermanager.h"
+
+#include <binder/IServiceManager.h>
+
+using namespace android;
+
+enum {
+    ACQUIRE_WAKE_LOCK = IBinder::FIRST_CALL_TRANSACTION,
+    ACQUIRE_WAKE_LOCK_UID = IBinder::FIRST_CALL_TRANSACTION + 1,
+    RELEASE_WAKE_LOCK = IBinder::FIRST_CALL_TRANSACTION + 2,
+    UPDATE_WAKE_LOCK_UIDS = IBinder::FIRST_CALL_TRANSACTION + 3,
+};
+
+void PowerManager::instantiate()
+{
+    defaultServiceManager()->addService(String16("power"), new PowerManager());
+}
+
+status_t PowerManager::onTransact(uint32_t code,
+                                  const Parcel &,
+                                  Parcel *,
+                                  uint32_t)
+{
+    switch (code) {
+    case ACQUIRE_WAKE_LOCK:
+    case ACQUIRE_WAKE_LOCK_UID:
+    case RELEASE_WAKE_LOCK:
+    case UPDATE_WAKE_LOCK_UIDS:
+        return NO_ERROR;
+    default:
+        break;
+    }
+}
+
+#if Q_ANDROID_VERSION_MAJOR > 4 || (Q_ANDROID_VERSION_MAJOR == 4 && Q_ANDROID_VERSION_MINOR >= 4)
+status_t PowerManager::acquireWakeLock(int,
+                                       const sp<IBinder> &,
+                                       const String16 &,
+                                       const String16 &)
+{
+    return OK;
+}
+
+status_t PowerManager::acquireWakeLockWithUid(int,
+                                              const sp<IBinder> &,
+                                              const String16 &,
+                                              const String16 &,
+                                              int)
+{
+    return OK;
+}
+
+status_t PowerManager::updateWakeLockUids(const sp<IBinder> &,
+                                          int,
+                                          const int *)
+{
+    return OK;
+}
+#else // < 4.4
+status_t PowerManager::acquireWakeLock(int, const sp<android::IBinder> &, const String16 &)
+{
+    return OK;
+}
+#endif
+
+status_t PowerManager::releaseWakeLock(const sp<IBinder> &, int)
+{
+    return OK;
+}
diff --git a/src/doppelganger/powermanager.h b/src/doppelganger/powermanager.h
new file mode 100644
index 0000000..f934b31
--- /dev/null
+++ b/src/doppelganger/powermanager.h
@@ -0,0 +1,62 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Digia Plc
+** All rights reserved.
+** For any questions to Digia, please use the contact form at
+** http://qt.digia.com/
+**
+** This file is part of Qt Enterprise Embedded.
+**
+** Licensees holding valid Qt Enterprise licenses may use this file in
+** accordance with the Qt Enterprise License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.
+**
+** If you have questions regarding the use of this file, please use
+** the contact form at http://qt.digia.com/
+**
+****************************************************************************/
+
+#ifndef POWERMANAGER_H
+#define POWERMANAGER_H
+
+#include <powermanager/IPowerManager.h>
+
+namespace android {
+
+typedef BnInterface<IPowerManager> BnPowerManagerService;
+
+} // namespace android
+
+class PowerManager : public android::BnPowerManagerService
+{
+public:
+    static void instantiate();
+    android::status_t onTransact(uint32_t code,
+                                 const android::Parcel &data,
+                                 android::Parcel *reply,
+                                 uint32_t flags);
+
+#if Q_ANDROID_VERSION_MAJOR > 4 || (Q_ANDROID_VERSION_MAJOR == 4 && Q_ANDROID_VERSION_MINOR >= 4)
+    virtual android::status_t acquireWakeLock(int flags,
+                                              const android::sp<android::IBinder>& lock,
+                                              const android::String16& tag,
+                                              const android::String16& packageName);
+    virtual android::status_t acquireWakeLockWithUid(int flags,
+                                                     const android::sp<android::IBinder>& lock,
+                                                     const android::String16& tag,
+                                                     const android::String16& packageName,
+                                                     int uid);
+    virtual android::status_t updateWakeLockUids(const android::sp<android::IBinder>& lock,
+                                                 int len,
+                                                 const int *uids);
+#else // < 4.4
+    virtual android::status_t acquireWakeLock(int flags,
+                                              const android::sp<android::IBinder>& lock,
+                                              const android::String16& tag);
+#endif
+
+    virtual android::status_t releaseWakeLock(const android::sp<android::IBinder>& lock, int flags);
+};
+
+#endif // POWERMANAGER_H