Make sessions aware of user id (a5b02329) · Commits · e / os / android_frameworks_base

media/java/android/media/session/ISessionManager.aidl

+2 −2

Original line number	Diff line number	Diff line
		@@ -25,6 +25,6 @@ import android.os.Bundle;
		* @hide
		*/
		interface ISessionManager {
		ISession createSession(String packageName, in ISessionCallback cb, String tag);
		List<IBinder> getSessions(in ComponentName compName);
		ISession createSession(String packageName, in ISessionCallback cb, String tag, int userId);
		List<IBinder> getSessions(in ComponentName compName, int userId);
		}
		No newline at end of file

media/java/android/media/session/SessionManager.java

+36 −2

Original line number	Diff line number	Diff line
		@@ -22,6 +22,7 @@ import android.media.session.ISessionManager;
		import android.os.IBinder;
		import android.os.RemoteException;
		import android.os.ServiceManager;
		import android.os.UserHandle;
		import android.service.notification.NotificationListenerService;
		import android.util.Log;

		@@ -65,10 +66,25 @@ public final class SessionManager {
		* @return a {@link Session} for the new session
		*/
		public Session createSession(String tag) {
		return createSessionAsUser(tag, UserHandle.myUserId());
		}

		/**
		* Creates a new session as the specified user. To create a session as a
		* user other than your own you must hold the
		* {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL}
		* permission.
		*
		* @param tag A short name for debugging purposes
		* @param userId The user id to create the session as.
		* @return a {@link Session} for the new session
		* @hide
		*/
		public Session createSessionAsUser(String tag, int userId) {
		try {
		Session.CallbackStub cbStub = new Session.CallbackStub();
		Session session = new Session(mService
		.createSession(mContext.getPackageName(), cbStub, tag), cbStub);
		.createSession(mContext.getPackageName(), cbStub, tag, userId), cbStub);
		cbStub.setMediaSession(session);

		return session;
		@@ -91,9 +107,27 @@ public final class SessionManager {
		* @return A list of controllers for ongoing sessions
		*/
		public List<SessionController> getActiveSessions(ComponentName notificationListener) {
		return getActiveSessionsForUser(notificationListener, UserHandle.myUserId());
		}

		/**
		* Get active sessions for a specific user. To retrieve actions for a user
		* other than your own you must hold the
		* {@link android.Manifest.permission#INTERACT_ACROSS_USERS_FULL} permission
		* in addition to any other requirements. If you are an enabled notification
		* listener you may only get sessions for the users you are enabled for.
		*
		* @param notificationListener The enabled notification listener component.
		* May be null.
		* @param userId The user id to fetch sessions for.
		* @return A list of controllers for ongoing sessions.
		* @hide
		*/
		public List<SessionController> getActiveSessionsForUser(ComponentName notificationListener,
		int userId) {
		ArrayList<SessionController> controllers = new ArrayList<SessionController>();
		try {
		List<IBinder> binders = mService.getSessions(notificationListener);
		List<IBinder> binders = mService.getSessions(notificationListener, userId);
		for (int i = binders.size() - 1; i >= 0; i--) {
		SessionController controller = SessionController.fromBinder(ISessionController.Stub
		.asInterface(binders.get(i)));

services/core/java/com/android/server/media/MediaSessionRecord.java

+22 −6

Original line number	Diff line number	Diff line
		@@ -16,6 +16,7 @@

		package com.android.server.media;

		import android.app.ActivityManager;
		import android.content.Intent;
		import android.content.pm.PackageManager;
		import android.media.routeprovider.RouteRequest;
		@@ -42,6 +43,7 @@ import android.os.Message;
		import android.os.RemoteException;
		import android.os.ResultReceiver;
		import android.os.SystemClock;
		import android.os.UserHandle;
		import android.text.TextUtils;
		import android.util.Log;
		import android.util.Pair;
		@@ -80,7 +82,9 @@ public class MediaSessionRecord implements IBinder.DeathRecipient {

		private final MessageHandler mHandler;

		private final int mPid;
		private final int mOwnerPid;
		private final int mOwnerUid;
		private final int mUserId;
		private final SessionInfo mSessionInfo;
		private final String mTag;
		private final ControllerStub mController;
		@@ -110,10 +114,12 @@ public class MediaSessionRecord implements IBinder.DeathRecipient {

		private boolean mIsActive = false;

		public MediaSessionRecord(int pid, String packageName, ISessionCallback cb, String tag,
		MediaSessionService service, Handler handler) {
		mPid = pid;
		mSessionInfo = new SessionInfo(UUID.randomUUID().toString(), packageName);
		public MediaSessionRecord(int ownerPid, int ownerUid, int userId, String ownerPackageName,
		ISessionCallback cb, String tag, MediaSessionService service, Handler handler) {
		mOwnerPid = ownerPid;
		mOwnerUid = ownerUid;
		mUserId = userId;
		mSessionInfo = new SessionInfo(UUID.randomUUID().toString(), ownerPackageName);
		mTag = tag;
		mController = new ControllerStub();
		mSession = new SessionStub();
		@@ -186,6 +192,15 @@ public class MediaSessionRecord implements IBinder.DeathRecipient {
		return (mFlags & flag) != 0;
		}

		/**
		* Get the user id this session was created for.
		*
		* @return The user id for this session.
		*/
		public int getUserId() {
		return mUserId;
		}

		/**
		* Check if this session has system priorty and should receive media buttons
		* before any other sessions.
		@@ -305,7 +320,8 @@ public class MediaSessionRecord implements IBinder.DeathRecipient {
		pw.println(prefix + mTag + " " + this);

		final String indent = prefix + " ";
		pw.println(indent + "pid=" + mPid);
		pw.println(indent + "ownerPid=" + mOwnerPid + ", ownerUid=" + mOwnerUid
		+ ", userId=" + mUserId);
		pw.println(indent + "info=" + mSessionInfo.toString());
		pw.println(indent + "published=" + mIsActive);
		pw.println(indent + "flags=" + mFlags);

services/core/java/com/android/server/media/MediaSessionService.java

+53 −28

Original line number	Diff line number	Diff line
		@@ -63,7 +63,6 @@ public class MediaSessionService extends SystemService implements Monitor {
		private final ArrayList<MediaRouteProviderProxy> mProviders
		= new ArrayList<MediaRouteProviderProxy>();
		private final Object mLock = new Object();
		// TODO do we want a separate thread for handling mediasession messages?
		private final Handler mHandler = new Handler();

		private MediaSessionRecord mPrioritySession;
		@@ -72,8 +71,8 @@ public class MediaSessionService extends SystemService implements Monitor {
		// session so we drop late callbacks properly.
		private int mShowRoutesRequestId = 0;

		// TODO refactor to have per user state. See MediaRouterService for an
		// example
		// TODO refactor to have per user state for providers. See
		// MediaRouterService for an example

		public MediaSessionService(Context context) {
		super(context);
		@@ -211,25 +210,42 @@ public class MediaSessionService extends SystemService implements Monitor {
		* <ul>
		* <li>the caller has android.Manifest.permission.MEDIA_CONTENT_CONTROL
		* permission</li>
		* <li>the caller's listener is one of the enabled notification listeners</li>
		* <li>the caller's listener is one of the enabled notification listeners
		* for the caller's user</li>
		* </ul>
		*/
		private void enforceMediaPermissions(ComponentName compName, int pid, int uid) {
		private void enforceMediaPermissions(ComponentName compName, int pid, int uid,
		int resolvedUserId) {
		if (getContext()
		.checkPermission(android.Manifest.permission.MEDIA_CONTENT_CONTROL, pid, uid)
		!= PackageManager.PERMISSION_GRANTED
		&& !isEnabledNotificationListener(compName)) {
		&& !isEnabledNotificationListener(compName, UserHandle.getUserId(uid),
		resolvedUserId)) {
		throw new SecurityException("Missing permission to control media.");
		}
		}

		private boolean isEnabledNotificationListener(ComponentName compName) {
		/**
		* This checks if the component is an enabled notification listener for the
		* specified user. Enabled components may only operate on behalf of the user
		* they're running as.
		*
		* @param compName The component that is enabled.
		* @param userId The user id of the caller.
		* @param forUserId The user id they're making the request on behalf of.
		* @return True if the component is enabled, false otherwise
		*/
		private boolean isEnabledNotificationListener(ComponentName compName, int userId,
		int forUserId) {
		if (userId != forUserId) {
		// You may not access another user's content as an enabled listener.
		return false;
		}
		if (compName != null) {
		final int currentUser = ActivityManager.getCurrentUser();
		final String enabledNotifListeners = Settings.Secure.getStringForUser(
		getContext().getContentResolver(),
		Settings.Secure.ENABLED_NOTIFICATION_LISTENERS,
		currentUser);
		userId);
		if (enabledNotifListeners != null) {
		final String[] components = enabledNotifListeners.split(":");
		for (int i = 0; i < components.length; i++) {
		@@ -248,23 +264,23 @@ public class MediaSessionService extends SystemService implements Monitor {
		}
		if (DEBUG) {
		Log.d(TAG, "not ok to get sessions, " + compName +
		" is not in list of ENABLED_NOTIFICATION_LISTENERS");
		" is not in list of ENABLED_NOTIFICATION_LISTENERS for user " + userId);
		}
		}
		return false;
		}

		private MediaSessionRecord createSessionInternal(int pid, String packageName,
		ISessionCallback cb, String tag, boolean forCalls) {
		private MediaSessionRecord createSessionInternal(int callerPid, int callerUid, int userId,
		String callerPackageName, ISessionCallback cb, String tag) {
		synchronized (mLock) {
		return createSessionLocked(pid, packageName, cb, tag);
		return createSessionLocked(callerPid, callerUid, userId, callerPackageName, cb, tag);
		}
		}

		private MediaSessionRecord createSessionLocked(int pid, String packageName,
		ISessionCallback cb, String tag) {
		final MediaSessionRecord session = new MediaSessionRecord(pid, packageName, cb, tag, this,
		mHandler);
		private MediaSessionRecord createSessionLocked(int callerPid, int callerUid, int userId,
		String callerPackageName, ISessionCallback cb, String tag) {
		final MediaSessionRecord session = new MediaSessionRecord(callerPid, callerUid, userId,
		callerPackageName, cb, tag, this, mHandler);
		try {
		cb.asBinder().linkToDeath(session, 0);
		} catch (RemoteException e) {
		@@ -273,7 +289,7 @@ public class MediaSessionService extends SystemService implements Monitor {
		mRecords.add(session);
		mPriorityStack.addSession(session);
		if (DEBUG) {
		Log.d(TAG, "Created session for package " + packageName + " with tag " + tag);
		Log.d(TAG, "Created session for package " + callerPackageName + " with tag " + tag);
		}
		return session;
		}
		@@ -358,41 +374,50 @@ public class MediaSessionService extends SystemService implements Monitor {
		// ActivityManagerNative.handleIncomingUser and stash result for use
		// when starting services on that session's behalf.
		@Override
		public ISession createSession(String packageName, ISessionCallback cb, String tag)
		throws RemoteException {
		public ISession createSession(String packageName, ISessionCallback cb, String tag,
		int userId) throws RemoteException {
		final int pid = Binder.getCallingPid();
		final int uid = Binder.getCallingUid();
		final long token = Binder.clearCallingIdentity();
		try {
		enforcePackageName(packageName, uid);
		int resolvedUserId = ActivityManager.handleIncomingUser(pid, uid, userId,
		false /* allowAll /, true / requireFull */, "createSession", packageName);
		if (cb == null) {
		throw new IllegalArgumentException("Controller callback cannot be null");
		}
		return createSessionInternal(pid, packageName, cb, tag, false).getSessionBinder();
		return createSessionInternal(pid, uid, resolvedUserId, packageName, cb, tag)
		.getSessionBinder();
		} finally {
		Binder.restoreCallingIdentity(token);
		}
		}

		@Override
		public List<IBinder> getSessions(ComponentName componentName) {
		public List<IBinder> getSessions(ComponentName componentName, int userId) {
		final int pid = Binder.getCallingPid();
		final int uid = Binder.getCallingUid();
		final long token = Binder.clearCallingIdentity();

		try {
		String packageName = null;
		if (componentName != null) {
		// If they gave us a component name verify they own the
		// package
		enforcePackageName(componentName.getPackageName(), uid);
		packageName = componentName.getPackageName();
		enforcePackageName(packageName, uid);
		}
		// Then check if they have the permissions or their component is
		// allowed
		enforceMediaPermissions(componentName, pid, uid);
		// Check that they can make calls on behalf of the user and
		// get the final user id
		int resolvedUserId = ActivityManager.handleIncomingUser(pid, uid, userId,
		true /* allowAll /, true / requireFull */, "getSessions", packageName);
		// Check if they have the permissions or their component is
		// enabled for the user they're calling from.
		enforceMediaPermissions(componentName, pid, uid, resolvedUserId);
		ArrayList<IBinder> binders = new ArrayList<IBinder>();
		synchronized (mLock) {
		ArrayList<MediaSessionRecord> records = mPriorityStack
		.getActiveSessions();
		.getActiveSessions(resolvedUserId);
		int size = records.size();
		for (int i = 0; i < size; i++) {
		binders.add(records.get(i).getControllerBinder().asBinder());
		@@ -428,7 +453,7 @@ public class MediaSessionService extends SystemService implements Monitor {
		mRecords.get(i).dump(pw, "");
		pw.println();
		}
		mPriorityStack.dumpLocked(pw, "");
		mPriorityStack.dump(pw, "");

		pw.println("Providers:");
		count = mProviders.size();

services/core/java/com/android/server/media/MediaSessionStack.java

+25 −11

Original line number	Diff line number	Diff line
		@@ -18,6 +18,7 @@ package com.android.server.media;

		import android.media.session.PlaybackState;
		import android.media.session.Session;
		import android.os.UserHandle;
		import android.text.TextUtils;

		import java.io.PrintWriter;
		@@ -104,11 +105,12 @@ public class MediaSessionStack {
		* Get the current priority sorted list of active sessions. The most
		* important session is at index 0 and the least important at size - 1.
		*
		* @param userId The user to check.
		* @return All the active sessions in priority order.
		*/
		public ArrayList<MediaSessionRecord> getActiveSessions() {
		public ArrayList<MediaSessionRecord> getActiveSessions(int userId) {
		if (mCachedActiveList == null) {
		mCachedActiveList = getPriorityListLocked(true, 0);
		mCachedActiveList = getPriorityListLocked(true, 0, userId);
		}
		return mCachedActiveList;
		}
		@@ -118,13 +120,14 @@ public class MediaSessionStack {
		* transport controls. The most important session is at index 0 and the
		* least important at size -1.
		*
		* @param userId The user to check.
		* @return All the active sessions that handle transport controls in
		* priority order.
		*/
		public ArrayList<MediaSessionRecord> getTransportControlSessions() {
		public ArrayList<MediaSessionRecord> getTransportControlSessions(int userId) {
		if (mCachedTransportControlList == null) {
		mCachedTransportControlList = getPriorityListLocked(true,
		Session.FLAG_HANDLES_TRANSPORT_CONTROLS);
		Session.FLAG_HANDLES_TRANSPORT_CONTROLS, userId);
		}
		return mCachedTransportControlList;
		}
		@@ -132,13 +135,14 @@ public class MediaSessionStack {
		/**
		* Get the highest priority active session.
		*
		* @param userId The user to check.
		* @return The current highest priority session or null.
		*/
		public MediaSessionRecord getDefaultSession() {
		public MediaSessionRecord getDefaultSession(int userId) {
		if (mCachedDefault != null) {
		return mCachedDefault;
		}
		ArrayList<MediaSessionRecord> records = getPriorityListLocked(true, 0);
		ArrayList<MediaSessionRecord> records = getPriorityListLocked(true, 0, userId);
		if (records.size() > 0) {
		return records.get(0);
		}
		@@ -148,22 +152,24 @@ public class MediaSessionStack {
		/**
		* Get the highest priority session that can handle media buttons.
		*
		* @param userId The user to check.
		* @return The default media button session or null.
		*/
		public MediaSessionRecord getDefaultMediaButtonSession() {
		public MediaSessionRecord getDefaultMediaButtonSession(int userId) {
		if (mCachedButtonReceiver != null) {
		return mCachedButtonReceiver;
		}
		ArrayList<MediaSessionRecord> records = getPriorityListLocked(true,
		Session.FLAG_HANDLES_MEDIA_BUTTONS);
		Session.FLAG_HANDLES_MEDIA_BUTTONS, userId);
		if (records.size() > 0) {
		mCachedButtonReceiver = records.get(0);
		}
		return mCachedButtonReceiver;
		}

		public void dumpLocked(PrintWriter pw, String prefix) {
		ArrayList<MediaSessionRecord> sortedSessions = getPriorityListLocked(false, 0);
		public void dump(PrintWriter pw, String prefix) {
		ArrayList<MediaSessionRecord> sortedSessions = getPriorityListLocked(false, 0,
		UserHandle.USER_ALL);
		int count = sortedSessions.size();
		pw.println(prefix + "Sessions Stack - have " + count + " sessions:");
		String indent = prefix + " ";
		@@ -182,9 +188,12 @@ public class MediaSessionStack {
		* all sessions.
		* @param withFlags Only return sessions with all the specified flags set. 0
		* returns all sessions.
		* @param userId The user to get sessions for. {@link UserHandle#USER_ALL}
		* will return sessions for all users.
		* @return The priority sorted list of sessions.
		*/
		private ArrayList<MediaSessionRecord> getPriorityListLocked(boolean activeOnly, int withFlags) {
		private ArrayList<MediaSessionRecord> getPriorityListLocked(boolean activeOnly, int withFlags,
		int userId) {
		ArrayList<MediaSessionRecord> result = new ArrayList<MediaSessionRecord>();
		int lastLocalIndex = 0;
		int lastActiveIndex = 0;
		@@ -194,7 +203,12 @@ public class MediaSessionStack {
		for (int i = 0; i < size; i++) {
		final MediaSessionRecord session = mSessions.get(i);

		if (userId != UserHandle.USER_ALL && userId != session.getUserId()) {
		// Filter out sessions for the wrong user
		continue;
		}
		if ((session.getFlags() & withFlags) != withFlags) {
		// Filter out sessions with the wrong flags
		continue;
		}
		if (!session.isActive()) {