Trim the activity info of another uid if no privilege
The activity info could be from another uid which is different
from the app that hosts the task. The information should be
trimmed if the caller app doesn't have the privilege.
Bug: 243130512
Test: verified locally
Test: atest RecentTasksTest
Change-Id: Ia343ac70e5bb9aeae718fca6674e1ca491a14512
diff --git a/services/core/java/com/android/server/wm/AppTaskImpl.java b/services/core/java/com/android/server/wm/AppTaskImpl.java
index e80c260..0bfc48b 100644
--- a/services/core/java/com/android/server/wm/AppTaskImpl.java
+++ b/services/core/java/com/android/server/wm/AppTaskImpl.java
@@ -98,7 +98,7 @@
throw new IllegalArgumentException("Unable to find task ID " + mTaskId);
}
return mService.getRecentTasks().createRecentTaskInfo(task,
- false /* stripExtras */);
+ false /* stripExtras */, true /* getTasksAllowed */);
} finally {
Binder.restoreCallingIdentity(origId);
}
diff --git a/services/core/java/com/android/server/wm/RecentTasks.java b/services/core/java/com/android/server/wm/RecentTasks.java
index 4860762..1fc061b 100644
--- a/services/core/java/com/android/server/wm/RecentTasks.java
+++ b/services/core/java/com/android/server/wm/RecentTasks.java
@@ -976,7 +976,7 @@
continue;
}
- res.add(createRecentTaskInfo(task, true /* stripExtras */));
+ res.add(createRecentTaskInfo(task, true /* stripExtras */, getTasksAllowed));
}
return res;
}
@@ -1895,7 +1895,8 @@
/**
* Creates a new RecentTaskInfo from a Task.
*/
- ActivityManager.RecentTaskInfo createRecentTaskInfo(Task tr, boolean stripExtras) {
+ ActivityManager.RecentTaskInfo createRecentTaskInfo(Task tr, boolean stripExtras,
+ boolean getTasksAllowed) {
final ActivityManager.RecentTaskInfo rti = new ActivityManager.RecentTaskInfo();
// If the recent Task is detached, we consider it will be re-attached to the default
// TaskDisplayArea because we currently only support recent overview in the default TDA.
@@ -1907,6 +1908,9 @@
rti.id = rti.isRunning ? rti.taskId : INVALID_TASK_ID;
rti.persistentId = rti.taskId;
rti.lastSnapshotData.set(tr.mLastTaskSnapshotData);
+ if (!getTasksAllowed) {
+ Task.trimIneffectiveInfo(tr, rti);
+ }
// Fill in organized child task info for the task created by organizer.
if (tr.mCreatedByOrganizer) {
diff --git a/services/core/java/com/android/server/wm/RunningTasks.java b/services/core/java/com/android/server/wm/RunningTasks.java
index 120fec0..0e60274 100644
--- a/services/core/java/com/android/server/wm/RunningTasks.java
+++ b/services/core/java/com/android/server/wm/RunningTasks.java
@@ -142,6 +142,10 @@
task.fillTaskInfo(rti, !mKeepIntentExtra);
// Fill in some deprecated values
rti.id = rti.taskId;
+
+ if (!mAllowed) {
+ Task.trimIneffectiveInfo(task, rti);
+ }
return rti;
}
}
diff --git a/services/core/java/com/android/server/wm/Task.java b/services/core/java/com/android/server/wm/Task.java
index aede32c..7dc6f95 100644
--- a/services/core/java/com/android/server/wm/Task.java
+++ b/services/core/java/com/android/server/wm/Task.java
@@ -3446,6 +3446,27 @@
info.isSleeping = shouldSleepActivities();
}
+ /**
+ * Removes the activity info if the activity belongs to a different uid, which is
+ * different from the app that hosts the task.
+ */
+ static void trimIneffectiveInfo(Task task, TaskInfo info) {
+ final ActivityRecord baseActivity = task.getActivity(r -> !r.finishing,
+ false /* traverseTopToBottom */);
+ final int baseActivityUid =
+ baseActivity != null ? baseActivity.getUid() : task.effectiveUid;
+
+ if (info.topActivityInfo != null
+ && task.effectiveUid != info.topActivityInfo.applicationInfo.uid) {
+ info.topActivity = null;
+ info.topActivityInfo = null;
+ }
+
+ if (task.effectiveUid != baseActivityUid) {
+ info.baseActivity = null;
+ }
+ }
+
@Nullable PictureInPictureParams getPictureInPictureParams() {
final Task topTask = getTopMostTask();
if (topTask == null) return null;
diff --git a/services/tests/wmtests/src/com/android/server/wm/RecentTasksTest.java b/services/tests/wmtests/src/com/android/server/wm/RecentTasksTest.java
index adf694c..0462e1b 100644
--- a/services/tests/wmtests/src/com/android/server/wm/RecentTasksTest.java
+++ b/services/tests/wmtests/src/com/android/server/wm/RecentTasksTest.java
@@ -30,6 +30,7 @@
import static android.content.pm.ActivityInfo.LAUNCH_MULTIPLE;
import static android.content.pm.ActivityInfo.LAUNCH_SINGLE_INSTANCE;
import static android.content.res.Configuration.ORIENTATION_PORTRAIT;
+import static android.os.Process.NOBODY_UID;
import static com.android.dx.mockito.inline.extended.ExtendedMockito.doNothing;
import static com.android.dx.mockito.inline.extended.ExtendedMockito.doReturn;
@@ -1220,20 +1221,34 @@
@Test
public void testCreateRecentTaskInfo_detachedTask() {
- final Task task = createTaskBuilder(".Task").setCreateActivity(true).build();
+ final Task task = createTaskBuilder(".Task").build();
+ new ActivityBuilder(mSupervisor.mService)
+ .setTask(task)
+ .setUid(NOBODY_UID)
+ .setComponent(getUniqueComponentName())
+ .build();
final TaskDisplayArea tda = task.getDisplayArea();
assertTrue(task.isAttached());
assertTrue(task.supportsMultiWindow());
- RecentTaskInfo info = mRecentTasks.createRecentTaskInfo(task, true);
+ RecentTaskInfo info = mRecentTasks.createRecentTaskInfo(task, true /* stripExtras */,
+ true /* getTasksAllowed */);
assertTrue(info.supportsMultiWindow);
+ info = mRecentTasks.createRecentTaskInfo(task, true /* stripExtras */,
+ false /* getTasksAllowed */);
+
+ assertTrue(info.topActivity == null);
+ assertTrue(info.topActivityInfo == null);
+ assertTrue(info.baseActivity == null);
+
// The task can be put in split screen even if it is not attached now.
task.removeImmediately();
- info = mRecentTasks.createRecentTaskInfo(task, true);
+ info = mRecentTasks.createRecentTaskInfo(task, true /* stripExtras */,
+ true /* getTasksAllowed */);
assertTrue(info.supportsMultiWindow);
@@ -1242,7 +1257,8 @@
doReturn(false).when(tda).supportsNonResizableMultiWindow();
doReturn(false).when(task).isResizeable();
- info = mRecentTasks.createRecentTaskInfo(task, true);
+ info = mRecentTasks.createRecentTaskInfo(task, true /* stripExtras */,
+ true /* getTasksAllowed */);
assertFalse(info.supportsMultiWindow);
@@ -1250,7 +1266,8 @@
// the device supports it.
doReturn(true).when(tda).supportsNonResizableMultiWindow();
- info = mRecentTasks.createRecentTaskInfo(task, true);
+ info = mRecentTasks.createRecentTaskInfo(task, true /* stripExtras */,
+ true /* getTasksAllowed */);
assertTrue(info.supportsMultiWindow);
}
