Merge cherrypicks of ['ag/20885582'] into tm-d4-release.

Change-Id: I121e21e71585c8964e65753956b1d635369600cc

3 files changed, 72 insertions, 43 deletions

diff --git a/core/java/android/os/IUserManager.aidl b/core/java/android/os/IUserManager.aidl
index e1d15defad38..125bdaf07b90 100644
--- a/core/java/android/os/IUserManager.aidl
+++ b/core/java/android/os/IUserManager.aidl
@@ -74,6 +74,7 @@ interface IUserManager {
     String getUserAccount(int userId);
     void setUserAccount(int userId, String accountName);
     long getUserCreationTime(int userId);
+    int getUserSwitchability(int userId);
     boolean isUserSwitcherEnabled(int mUserId);
     boolean isRestricted(int userId);
     boolean canHaveRestrictedProfile(int userId);
diff --git a/core/java/android/os/UserManager.java b/core/java/android/os/UserManager.java
index 5487a1203833..46fff2bfc922 100644
--- a/core/java/android/os/UserManager.java
+++ b/core/java/android/os/UserManager.java
@@ -58,7 +58,6 @@ import android.graphics.Rect;
 import android.graphics.drawable.Drawable;
 import android.location.LocationManager;
 import android.provider.Settings;
-import android.telephony.TelephonyManager;
 import android.util.AndroidException;
 import android.util.ArraySet;
 import android.util.Log;
@@ -1670,7 +1669,7 @@ public class UserManager {
     public static final int SWITCHABILITY_STATUS_SYSTEM_USER_LOCKED = 1 << 2;
 
     /**
-     * Result returned in {@link #getUserSwitchability()} indicating user swichability.
+     * Result returned in {@link #getUserSwitchability()} indicating user switchability.
      * @hide
      */
     @Retention(RetentionPolicy.SOURCE)
@@ -2037,25 +2036,16 @@ public class UserManager {
      * @hide
      */
     @Deprecated
-    @RequiresPermission(allOf = {
-            Manifest.permission.READ_PHONE_STATE,
-            Manifest.permission.MANAGE_USERS}, // Can be INTERACT_ACROSS_USERS instead.
-            conditional = true)
+    @RequiresPermission(anyOf = {android.Manifest.permission.MANAGE_USERS,
+            android.Manifest.permission.INTERACT_ACROSS_USERS})
     @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
     @UserHandleAware
     public boolean canSwitchUsers() {
-        boolean allowUserSwitchingWhenSystemUserLocked = Settings.Global.getInt(
-                mContext.getContentResolver(),
-                Settings.Global.ALLOW_USER_SWITCHING_WHEN_SYSTEM_USER_LOCKED, 0) != 0;
-        boolean isSystemUserUnlocked = isUserUnlocked(UserHandle.SYSTEM);
-        boolean inCall = false;
-        TelephonyManager telephonyManager = mContext.getSystemService(TelephonyManager.class);
-        if (telephonyManager != null) {
-            inCall = telephonyManager.getCallState() != TelephonyManager.CALL_STATE_IDLE;
+        try {
+            return mService.getUserSwitchability(mUserId) == SWITCHABILITY_STATUS_OK;
+        } catch (RemoteException re) {
+            throw re.rethrowFromSystemServer();
         }
-        boolean isUserSwitchDisallowed = hasUserRestrictionForUser(DISALLOW_USER_SWITCH, mUserId);
-        return (allowUserSwitchingWhenSystemUserLocked || isSystemUserUnlocked) && !inCall
-                && !isUserSwitchDisallowed;
     }
 
     /**
@@ -2089,34 +2079,14 @@ public class UserManager {
      * @return A {@link UserSwitchabilityResult} flag indicating if the user is switchable.
      * @hide
      */
-    @RequiresPermission(allOf = {Manifest.permission.READ_PHONE_STATE,
-            android.Manifest.permission.MANAGE_USERS,
-            android.Manifest.permission.INTERACT_ACROSS_USERS}, conditional = true)
+    @RequiresPermission(anyOf = {android.Manifest.permission.MANAGE_USERS,
+            android.Manifest.permission.INTERACT_ACROSS_USERS})
     public @UserSwitchabilityResult int getUserSwitchability(UserHandle userHandle) {
-        final TelephonyManager tm =
-                (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE);
-
-        int flags = SWITCHABILITY_STATUS_OK;
-        if (tm.getCallState() != TelephonyManager.CALL_STATE_IDLE) {
-            flags |= SWITCHABILITY_STATUS_USER_IN_CALL;
-        }
-        if (hasUserRestrictionForUser(DISALLOW_USER_SWITCH, userHandle)) {
-            flags |= SWITCHABILITY_STATUS_USER_SWITCH_DISALLOWED;
-        }
-
-        // System User is always unlocked in Headless System User Mode, so ignore this flag
-        if (!isHeadlessSystemUserMode()) {
-            final boolean allowUserSwitchingWhenSystemUserLocked = Settings.Global.getInt(
-                    mContext.getContentResolver(),
-                    Settings.Global.ALLOW_USER_SWITCHING_WHEN_SYSTEM_USER_LOCKED, 0) != 0;
-            final boolean systemUserUnlocked = isUserUnlocked(UserHandle.SYSTEM);
-
-            if (!allowUserSwitchingWhenSystemUserLocked && !systemUserUnlocked) {
-                flags |= SWITCHABILITY_STATUS_SYSTEM_USER_LOCKED;
-            }
+        try {
+            return mService.getUserSwitchability(userHandle.getIdentifier());
+        } catch (RemoteException re) {
+            throw re.rethrowFromSystemServer();
         }
-
-        return flags;
     }
 
     /**
diff --git a/services/core/java/com/android/server/pm/UserManagerService.java b/services/core/java/com/android/server/pm/UserManagerService.java
index 00fb0651adc4..866a995585cd 100644
--- a/services/core/java/com/android/server/pm/UserManagerService.java
+++ b/services/core/java/com/android/server/pm/UserManagerService.java
@@ -91,6 +91,7 @@ import android.security.GateKeeper;
 import android.service.gatekeeper.IGateKeeperService;
 import android.service.voice.VoiceInteractionManagerInternal;
 import android.stats.devicepolicy.DevicePolicyEnums;
+import android.telecom.TelecomManager;
 import android.text.TextUtils;
 import android.util.ArrayMap;
 import android.util.ArraySet;
@@ -1760,6 +1761,63 @@ public class UserManagerService extends IUserManager.Stub {
         }
     }
 
+    /**
+     * Returns whether switching users is currently allowed for the provided user.
+     * <p>
+     * Switching users is not allowed in the following cases:
+     * <li>the user is in a phone call</li>
+     * <li>{@link UserManager#DISALLOW_USER_SWITCH} is set</li>
+     * <li>system user hasn't been unlocked yet</li>
+     *
+     * @return A {@link UserManager.UserSwitchabilityResult} flag indicating if the user is
+     * switchable.
+     */
+    public @UserManager.UserSwitchabilityResult int getUserSwitchability(int userId) {
+        checkManageOrInteractPermissionIfCallerInOtherProfileGroup(userId, "getUserSwitchability");
+
+        final TimingsTraceAndSlog t = new TimingsTraceAndSlog();
+        t.traceBegin("getUserSwitchability-" + userId);
+
+        int flags = UserManager.SWITCHABILITY_STATUS_OK;
+
+        t.traceBegin("TM.isInCall");
+        final long identity = Binder.clearCallingIdentity();
+        try {
+            final TelecomManager telecomManager = mContext.getSystemService(TelecomManager.class);
+            if (telecomManager != null && telecomManager.isInCall()) {
+                flags |= UserManager.SWITCHABILITY_STATUS_USER_IN_CALL;
+            }
+        } finally {
+            Binder.restoreCallingIdentity(identity);
+        }
+        t.traceEnd();
+
+        t.traceBegin("hasUserRestriction-DISALLOW_USER_SWITCH");
+        if (mLocalService.hasUserRestriction(DISALLOW_USER_SWITCH, userId)) {
+            flags |= UserManager.SWITCHABILITY_STATUS_USER_SWITCH_DISALLOWED;
+        }
+        t.traceEnd();
+
+        // System User is always unlocked in Headless System User Mode, so ignore this flag
+        if (!UserManager.isHeadlessSystemUserMode()) {
+            t.traceBegin("getInt-ALLOW_USER_SWITCHING_WHEN_SYSTEM_USER_LOCKED");
+            final boolean allowUserSwitchingWhenSystemUserLocked = Settings.Global.getInt(
+                    mContext.getContentResolver(),
+                    Settings.Global.ALLOW_USER_SWITCHING_WHEN_SYSTEM_USER_LOCKED, 0) != 0;
+            t.traceEnd();
+            t.traceBegin("isUserUnlocked-USER_SYSTEM");
+            final boolean systemUserUnlocked = mLocalService.isUserUnlocked(UserHandle.USER_SYSTEM);
+            t.traceEnd();
+
+            if (!allowUserSwitchingWhenSystemUserLocked && !systemUserUnlocked) {
+                flags |= UserManager.SWITCHABILITY_STATUS_SYSTEM_USER_LOCKED;
+            }
+        }
+        t.traceEnd();
+
+        return flags;
+    }
+
     @Override
     public boolean isUserSwitcherEnabled(@UserIdInt int mUserId) {
         boolean multiUserSettingOn = Settings.Global.getInt(mContext.getContentResolver(),