Show keyguard when SIM is removed

If the device has a secure lockscreen and the device'
SIM card is removed, lock the device.

Change-Id: I5b0deea8851b38781059732a3cf6fa0a4a00e3ca
Fixes: 30997251
Test: set up lock screen, insert SIM card, unlock phone, remove SIM card, observe that screen is locked

packages/SystemUI/src/com/android/systemui/keyguard/KeyguardViewMediator.java

@@ -59,6 +59,8 @@ import android.view.WindowManagerPolicy;
 import android.view.animation.Animation;
 import android.view.animation.AnimationUtils;
 
+import com.android.internal.logging.MetricsLogger;
+import com.android.internal.logging.nano.MetricsProto;
 import com.android.internal.policy.IKeyguardDismissCallback;
 import com.android.internal.policy.IKeyguardDrawnCallback;
 import com.android.internal.policy.IKeyguardExitCallback;
@@ -325,6 +327,7 @@ public class KeyguardViewMediator extends SystemUI {
 
     private boolean mWakeAndUnlocking;
     private IKeyguardDrawnCallback mDrawnCallback;
+    private boolean mLockWhenSimRemoved;
 
     KeyguardUpdateMonitorCallback mUpdateCallback = new KeyguardUpdateMonitorCallback() {
 
@@ -415,7 +418,7 @@ public class KeyguardViewMediator extends SystemUI {
                 case ABSENT:
                     // only force lock screen in case of missing sim if user hasn't
                     // gone through setup wizard
-                    synchronized (this) {
+                    synchronized (KeyguardViewMediator.this) {
                         if (shouldWaitForProvisioning()) {
                             if (!mShowing) {
                                 if (DEBUG_SIM_STATES) Log.d(TAG, "ICC_ABSENT isn't showing,"
@@ -426,11 +429,12 @@ public class KeyguardViewMediator extends SystemUI {
                                 resetStateLocked();
                             }
                         }
+                        onSimNotReadyLocked();
                     }
                     break;
                 case PIN_REQUIRED:
                 case PUK_REQUIRED:
-                    synchronized (this) {
+                    synchronized (KeyguardViewMediator.this) {
                         if (!mShowing) {
                             if (DEBUG_SIM_STATES) Log.d(TAG,
                                     "INTENT_VALUE_ICC_LOCKED and keygaurd isn't "
@@ -442,7 +446,7 @@ public class KeyguardViewMediator extends SystemUI {
                     }
                     break;
                 case PERM_DISABLED:
-                    synchronized (this) {
+                    synchronized (KeyguardViewMediator.this) {
                         if (!mShowing) {
                             if (DEBUG_SIM_STATES) Log.d(TAG, "PERM_DISABLED and "
                                   + "keygaurd isn't showing.");
@@ -452,21 +456,40 @@ public class KeyguardViewMediator extends SystemUI {
                                   + "show permanently disabled message in lockscreen.");
                             resetStateLocked();
                         }
+                        onSimNotReadyLocked();
                     }
                     break;
                 case READY:
-                    synchronized (this) {
+                    synchronized (KeyguardViewMediator.this) {
                         if (mShowing) {
                             resetStateLocked();
                         }
+                        mLockWhenSimRemoved = true;
                     }
                     break;
                 default:
-                    if (DEBUG_SIM_STATES) Log.v(TAG, "Ignoring state: " + simState);
+                    if (DEBUG_SIM_STATES) Log.v(TAG, "Unspecific state: " + simState);
+                    synchronized (KeyguardViewMediator.this) {
+                        onSimNotReadyLocked();
+                    }
                     break;
             }
         }
 
+        private void onSimNotReadyLocked() {
+            if (isSecure() && mLockWhenSimRemoved) {
+                mLockWhenSimRemoved = false;
+                MetricsLogger.action(mContext,
+                        MetricsProto.MetricsEvent.ACTION_LOCK_BECAUSE_SIM_REMOVED, mShowing);
+                if (!mShowing) {
+                    if (DEBUG_SIM_STATES) Log.d(TAG, "SIM removed, showing keyguard");
+                    doKeyguardLocked(null);
+                } else {
+                    resetStateLocked();
+                }
+            }
+        }
+
         @Override
         public void onFingerprintAuthFailed() {
             final int currentUser = KeyguardUpdateMonitor.getCurrentUser();

proto/src/metrics_constants.proto

@@ -2232,6 +2232,14 @@ message MetricsEvent {
 
     // ---- End N-MR1 Constants, all N-MR1 constants go above this line ----
 
+    // ACTION: The lockscreen gets shown because the SIM card was removed
+    // SUBTYPE: false: device was previously unlocked, true: device was previously locked
+    // CATEGORY: GLOBAL_SYSTEM_UI
+    // OS: N-MR2
+    ACTION_LOCK_BECAUSE_SIM_REMOVED = 496;
+
+    // ---- End N-MR2 Constants, all N-MR2 constants go above this line ----
+
     // ------- Begin N Keyboard Shortcuts Helper -----
     // Keyboard Shortcuts Helper is opened/closed.
     KEYBOARD_SHORTCUTS_HELPER = 500;