Add APIs to allow app to share identity with launched activity (022e1e0e) · Commits · e / os / android_frameworks_base

core/api/current.txt

+3 −0

Original line number	Diff line number	Diff line
		@@ -4149,6 +4149,8 @@ package android.app {
		method @Deprecated public android.app.FragmentManager getFragmentManager();
		method public android.content.Intent getIntent();
		method @Nullable public Object getLastNonConfigurationInstance();
		method @Nullable public String getLaunchedFromPackage();
		method public int getLaunchedFromUid();
		method @NonNull public android.view.LayoutInflater getLayoutInflater();
		method @Deprecated public android.app.LoaderManager getLoaderManager();
		method @NonNull public String getLocalClassName();
		@@ -4618,6 +4620,7 @@ package android.app {
		method public android.app.ActivityOptions setLaunchDisplayId(int);
		method public android.app.ActivityOptions setLockTaskEnabled(boolean);
		method public void setPendingIntentBackgroundActivityLaunchAllowed(boolean);
		method @NonNull public android.app.ActivityOptions setShareIdentityEnabled(boolean);
		method @NonNull public android.app.ActivityOptions setSplashScreenStyle(int);
		method public android.os.Bundle toBundle();
		method public void update(android.app.ActivityOptions);

core/java/android/app/Activity.java

+52 −4

Original line number	Diff line number	Diff line
		@@ -6612,16 +6612,64 @@ public class Activity extends ContextThemeWrapper
		}

		/**
		* Returns the uid who started this activity.
		* @hide
		* Returns the uid of the app that initially launched this activity.
		*
		* <p>In order to receive the launching app's uid, at least one of the following has to
		* be met:
		* <ul>
		* <li>The app must call {@link ActivityOptions#setShareIdentityEnabled(boolean)} with a
		* value of {@code true} and launch this activity with the resulting {@code
		* ActivityOptions}.
		* <li>The launched activity has the same uid as the launching app.
		* <li>The launched activity is running in a package that is signed with the same key
		* used to sign the platform (typically only system packages such as Settings will
		* meet this requirement).
		* </ul>.
		* These are the same requirements for {@link #getLaunchedFromPackage()}; if any of these are
		* met, then these methods can be used to obtain the uid and package name of the launching
		* app. If none are met, then {@link Process#INVALID_UID} is returned.
		*
		* <p>Note, even if the above conditions are not met, the launching app's identity may
		* still be available from {@link #getCallingPackage()} if this activity was started with
		* {@code Activity#startActivityForResult} to allow validation of the result's recipient.
		*
		* @return the uid of the launching app or {@link Process#INVALID_UID} if the current
		* activity cannot access the identity of the launching app
		*
		* @see ActivityOptions#setShareIdentityEnabled(boolean)
		* @see #getLaunchedFromPackage()
		*/
		public int getLaunchedFromUid() {
		return ActivityClient.getInstance().getLaunchedFromUid(getActivityToken());
		}

		/**
		* Returns the package who started this activity.
		* @hide
		* Returns the package name of the app that initially launched this activity.
		*
		* <p>In order to receive the launching app's package name, at least one of the following has
		* to be met:
		* <ul>
		* <li>The app must call {@link ActivityOptions#setShareIdentityEnabled(boolean)} with a
		* value of {@code true} and launch this activity with the resulting
		* {@code ActivityOptions}.
		* <li>The launched activity has the same uid as the launching app.
		* <li>The launched activity is running in a package that is signed with the same key
		* used to sign the platform (typically only system packages such as Settings will
		* meet this requirement).
		* </ul>.
		* These are the same requirements for {@link #getLaunchedFromUid()}; if any of these are
		* met, then these methods can be used to obtain the uid and package name of the launching
		* app. If none are met, then {@code null} is returned.
		*
		* <p>Note, even if the above conditions are not met, the launching app's identity may
		* still be available from {@link #getCallingPackage()} if this activity was started with
		* {@code Activity#startActivityForResult} to allow validation of the result's recipient.
		*
		* @return the package name of the launching app or null if the current activity
		* cannot access the identity of the launching app
		*
		* @see ActivityOptions#setShareIdentityEnabled(boolean)
		* @see #getLaunchedFromUid()
		*/
		@Nullable
		public String getLaunchedFromPackage() {

core/java/android/app/ActivityOptions.java

+53 −0

Original line number	Diff line number	Diff line
		@@ -201,6 +201,12 @@ public class ActivityOptions extends ComponentOptions {
		*/
		private static final String KEY_LOCK_TASK_MODE = "android:activity.lockTaskMode";

		/**
		* Whether the launching app's identity should be available to the launched activity.
		* @see #setShareIdentityEnabled(boolean)
		*/
		private static final String KEY_SHARE_IDENTITY = "android:activity.shareIdentity";

		/**
		* The display id the activity should be launched into.
		* @see #setLaunchDisplayId(int)
		@@ -457,6 +463,7 @@ public class ActivityOptions extends ComponentOptions {
		private int mLaunchTaskId = -1;
		private int mPendingIntentLaunchFlags;
		private boolean mLockTaskMode = false;
		private boolean mShareIdentity = false;
		private boolean mDisallowEnterPictureInPictureWhileLaunching;
		private boolean mApplyActivityFlagsForBubbles;
		private boolean mTaskAlwaysOnTop;
		@@ -1238,6 +1245,7 @@ public class ActivityOptions extends ComponentOptions {
		break;
		}
		mLockTaskMode = opts.getBoolean(KEY_LOCK_TASK_MODE, false);
		mShareIdentity = opts.getBoolean(KEY_SHARE_IDENTITY, false);
		mLaunchDisplayId = opts.getInt(KEY_LAUNCH_DISPLAY_ID, INVALID_DISPLAY);
		mCallerDisplayId = opts.getInt(KEY_CALLER_DISPLAY_ID, INVALID_DISPLAY);
		mLaunchTaskDisplayArea = opts.getParcelable(KEY_LAUNCH_TASK_DISPLAY_AREA_TOKEN, android.window.WindowContainerToken.class);
		@@ -1487,6 +1495,20 @@ public class ActivityOptions extends ComponentOptions {
		return mLockTaskMode;
		}

		/**
		* Returns whether the launching app has opted-in to sharing its identity with the launched
		* activity.
		*
		* @see #setShareIdentityEnabled(boolean)
		* @see Activity#getLaunchedFromUid()
		* @see Activity#getLaunchedFromPackage()
		*
		* @hide
		*/
		public boolean getShareIdentity() {
		return mShareIdentity;
		}

		/**
		* Gets whether the activity want to be launched as other theme for the splash screen.
		* @hide
		@@ -1559,6 +1581,33 @@ public class ActivityOptions extends ComponentOptions {
		return this;
		}

		/**
		* Sets whether the identity of the launching app should be shared with the activity.
		*
		* <p>Use this option when starting an activity that needs to know the identity of the
		* launching app; with this set to {@code true}, the activity will have access to the launching
		* app's package name and uid.
		*
		* <p>Defaults to {@code false} if not set.
		*
		* <p>Note, even if the launching app does not explicitly enable sharing of its identity, if
		* the activity is started with {@code Activity#startActivityForResult}, then {@link
		* Activity#getCallingPackage()} will still return the launching app's package name to
		* allow validation of the result's recipient. Also, an activity running within a package
		* signed by the same key used to sign the platform (some system apps such as Settings will
		* be signed with the platform's key) will have access to the launching app's identity.
		*
		* @param shareIdentity whether the launching app's identity should be shared with the activity
		* @return {@code this} {@link ActivityOptions} instance.
		* @see Activity#getLaunchedFromPackage()
		* @see Activity#getLaunchedFromUid()
		*/
		@NonNull
		public ActivityOptions setShareIdentityEnabled(boolean shareIdentity) {
		mShareIdentity = shareIdentity;
		return this;
		}

		/**
		* Gets the id of the display where activity should be launched.
		* @return The id of the display where activity should be launched,
		@@ -2039,6 +2088,7 @@ public class ActivityOptions extends ComponentOptions {
		break;
		}
		mLockTaskMode = otherOptions.mLockTaskMode;
		mShareIdentity = otherOptions.mShareIdentity;
		mAnimSpecs = otherOptions.mAnimSpecs;
		mAnimationFinishedListener = otherOptions.mAnimationFinishedListener;
		mSpecsFuture = otherOptions.mSpecsFuture;
		@@ -2123,6 +2173,9 @@ public class ActivityOptions extends ComponentOptions {
		if (mLockTaskMode) {
		b.putBoolean(KEY_LOCK_TASK_MODE, mLockTaskMode);
		}
		if (mShareIdentity) {
		b.putBoolean(KEY_SHARE_IDENTITY, mShareIdentity);
		}
		if (mLaunchDisplayId != INVALID_DISPLAY) {
		b.putInt(KEY_LAUNCH_DISPLAY_ID, mLaunchDisplayId);
		}

services/core/java/com/android/server/wm/ActivityClientController.java

+14 −11

Original line number	Diff line number	Diff line
		@@ -675,29 +675,32 @@ class ActivityClientController extends IActivityClientController.Stub {

		@Override
		public int getLaunchedFromUid(IBinder token) {
		if (!canGetLaunchedFrom()) {
		return INVALID_UID;
		}
		final int uid = Binder.getCallingUid();
		final boolean isInternalCaller = isInternalCallerGetLaunchedFrom(uid);
		synchronized (mGlobalLock) {
		final ActivityRecord r = ActivityRecord.forTokenLocked(token);
		return r != null ? r.launchedFromUid : INVALID_UID;
		if (r != null && (isInternalCaller \|\| r.mShareIdentity \|\| r.launchedFromUid == uid)) {
		return r.launchedFromUid;
		}
		}
		return INVALID_UID;
		}

		@Override
		public String getLaunchedFromPackage(IBinder token) {
		if (!canGetLaunchedFrom()) {
		return null;
		}
		final int uid = Binder.getCallingUid();
		final boolean isInternalCaller = isInternalCallerGetLaunchedFrom(uid);
		synchronized (mGlobalLock) {
		final ActivityRecord r = ActivityRecord.forTokenLocked(token);
		return r != null ? r.launchedFromPackage : null;
		if (r != null && (isInternalCaller \|\| r.mShareIdentity \|\| r.launchedFromUid == uid)) {
		return r.launchedFromPackage;
		}
		}
		return null;
		}

		/** Whether the caller can get the package or uid that launched its activity. */
		private boolean canGetLaunchedFrom() {
		final int uid = Binder.getCallingUid();
		/** Whether the call to one of the getLaunchedFrom APIs is performed by an internal caller. */
		private boolean isInternalCallerGetLaunchedFrom(int uid) {
		if (UserHandle.getAppId(uid) == SYSTEM_UID) {
		return true;
		}

services/core/java/com/android/server/wm/ActivityRecord.java

+2 −0

Original line number	Diff line number	Diff line
		@@ -880,6 +880,7 @@ final class ActivityRecord extends WindowToken implements WindowManagerService.A
		boolean mEnteringAnimation;
		boolean mOverrideTaskTransition;
		boolean mDismissKeyguard;
		boolean mShareIdentity;

		boolean mAppStopped;
		// A hint to override the window specified rotation animation, or -1 to use the window specified
		@@ -2010,6 +2011,7 @@ final class ActivityRecord extends WindowToken implements WindowManagerService.A

		mOverrideTaskTransition = options.getOverrideTaskTransition();
		mDismissKeyguard = options.getDismissKeyguard();
		mShareIdentity = options.getShareIdentity();
		}

		ColorDisplayService.ColorDisplayServiceInternal cds = LocalServices.getService(