Enforce permission for recording from remote submix. (893a5642) · Commits · e / os / android_frameworks_av

services/audioflinger/AudioFlinger.cpp

+10 −0

Original line number	Diff line number	Diff line
		@@ -1206,6 +1206,10 @@ void AudioFlinger::NotificationClient::binderDied(const wp<IBinder>& who)

		// ----------------------------------------------------------------------------

		static bool deviceRequiresCaptureAudioOutputPermission(audio_devices_t inDevice) {
		return audio_is_remote_submix_device(inDevice);
		}

		sp<IAudioRecord> AudioFlinger::openRecord(
		audio_io_handle_t input,
		uint32_t sampleRate,
		@@ -1246,6 +1250,12 @@ sp<IAudioRecord> AudioFlinger::openRecord(
		goto Exit;
		}

		if (deviceRequiresCaptureAudioOutputPermission(thread->inDevice())
		&& !captureAudioOutputAllowed()) {
		lStatus = PERMISSION_DENIED;
		goto Exit;
		}

		pid_t pid = IPCThreadState::self()->getCallingPid();
		client = registerPid_l(pid);

+9 −0

Original line number	Diff line number	Diff line
		@@ -34,6 +34,15 @@ bool recordingAllowed() {
		return ok;
		}

		bool captureAudioOutputAllowed() {
		if (getpid_cached == IPCThreadState::self()->getCallingPid()) return true;
		static const String16 sCaptureAudioOutput("android.permission.CAPTURE_AUDIO_OUTPUT");
		// don't use PermissionCache; this is not a system permission
		bool ok = checkCallingPermission(sCaptureAudioOutput);
		if (!ok) ALOGE("Request requires android.permission.CAPTURE_AUDIO_OUTPUT");
		return ok;
		}

		bool settingsAllowed() {
		if (getpid_cached == IPCThreadState::self()->getCallingPid()) return true;
		static const String16 sAudioSettings("android.permission.MODIFY_AUDIO_SETTINGS");

+1 −0

Original line number	Diff line number	Diff line
		@@ -21,6 +21,7 @@ namespace android {
		extern pid_t getpid_cached;

		bool recordingAllowed();
		bool captureAudioOutputAllowed();
		bool settingsAllowed();
		bool dumpAllowed();