Ensuring that we update the calling uid/package when updating a task's original intent. (Bug 16676636)

Change-Id: I5d75a912e86e83f05717cb19e9b6edb02eb053e6

Author: Winson Chung

services/core/java/com/android/server/am/ActivityStackSupervisor.java

@@ -1714,7 +1714,7 @@ final int startActivityUncheckedLocked(ActivityRecord r,
                         // the activity based on affinity...  now that we
                         // are actually launching it, we can assign the
                         // base intent.
-                        intentActivity.task.setIntent(intent, r.info);
+                        intentActivity.task.setIntent(r);
                     }
                     // If the target task is not in the front, then we need
                     // to bring it to the front...  except...  well, with
@@ -1771,7 +1771,7 @@ final int startActivityUncheckedLocked(ActivityRecord r,
                         // not be too hard...
                         reuseTask = intentActivity.task;
                         reuseTask.performClearTaskLocked();
-                        reuseTask.setIntent(r.intent, r.info);
+                        reuseTask.setIntent(r);
                     } else if ((launchFlags&Intent.FLAG_ACTIVITY_CLEAR_TOP) != 0
                             || launchSingleInstance || launchSingleTask) {
                         // In this situation we want to remove all activities
@@ -1786,7 +1786,7 @@ final int startActivityUncheckedLocked(ActivityRecord r,
                                 // intents for the top activity, so make sure
                                 // the task now has the identity of the new
                                 // intent.
-                                top.task.setIntent(r.intent, r.info);
+                                top.task.setIntent(r);
                             }
                             ActivityStack.logStartActivity(EventLogTags.AM_NEW_INTENT,
                                     r, top.task);
@@ -1815,7 +1815,7 @@ final int startActivityUncheckedLocked(ActivityRecord r,
                             ActivityStack.logStartActivity(EventLogTags.AM_NEW_INTENT, r,
                                     intentActivity.task);
                             if (intentActivity.frontOfTask) {
-                                intentActivity.task.setIntent(r.intent, r.info);
+                                intentActivity.task.setIntent(r);
                             }
                             intentActivity.deliverNewIntentLocked(callingUid, r.intent);
                         } else if (!r.intent.filterEquals(intentActivity.task.intent)) {
@@ -1841,7 +1841,7 @@ final int startActivityUncheckedLocked(ActivityRecord r,
                         // at the bottom of its stack, but that's a little hard
                         // to do with the current organization of the code so
                         // for now we'll just drop it.
-                        intentActivity.task.setIntent(r.intent, r.info);
+                        intentActivity.task.setIntent(r);
                     }
                     if (!addingToTask && reuseTask == null) {
                         // We didn't do anything...  but it was needed (a.k.a., client

services/core/java/com/android/server/am/TaskRecord.java

@@ -220,7 +220,15 @@ long getInactiveDuration() {
         return System.currentTimeMillis() - lastActiveTime;
     }
 
-    void setIntent(Intent _intent, ActivityInfo info) {
+    /** Sets the original intent, and the calling uid and package. */
+    void setIntent(ActivityRecord r) {
+        setIntent(r.intent, r.info);
+        mCallingUid = r.launchedFromUid;
+        mCallingPackage = r.launchedFromPackage;
+    }
+
+    /** Sets the original intent, _without_ updating the calling uid or package. */
+    private void setIntent(Intent _intent, ActivityInfo info) {
         if (intent == null) {
             mNeverRelinquishIdentity =
                     (info.flags & ActivityInfo.FLAG_RELINQUISH_TASK_IDENTITY) == 0;
@@ -723,7 +731,7 @@ int findEffectiveRootIndex() {
     void updateEffectiveIntent() {
         final int effectiveRootIndex = findEffectiveRootIndex();
         final ActivityRecord r = mActivities.get(effectiveRootIndex);
-        setIntent(r.intent, r.info);
+        setIntent(r);
     }
 
     void saveTaskDescription(ActivityManager.TaskDescription taskDescription,