Handle UNKNOWN sim state in KGVM.

In keyguard view mediator, we do not handle the UNKNOWN sim state
correctly. In CentralSurfaces, we are preventing dismiss amounts to be
considered because the sim state is considered secure.  When the esim is disabled, it is confirmed that we expect an
UNKNOWN sim state. This state does not propagate to the view mediator
from the update monitor. When the sim is disabled, the subscription id
is -1 and state is UNKNOWN(0). We want to ensure that this state change
is propgated to view mediator to ensure that the sim state is no longer
considered secure. Additionally, a SIM_PIN_REQUIRED signal is sent as it
transitions from SIM_PIN_REQUIRED to UNKNOWN. This is setting
mPendingPinLock to true. This makes keyguard show after it is dismissed
the first time.

Fixes: 280010618
Test: disable sim and swipe to unlock LS with none security method
Test: unlock sim and swipe to unlock LS with none security method
Test: disable sim and unlock with pin
Test: unlock sim and unlock with pin
Test: disable sim puk and swipe to unlock LS with none security method
Test: unlock sim puk and swipe to unlock LS with none security method
Change-Id: I5bf6ce457a2d87d8f27ca907684a3e1571f9252b

3 files changed, 16 insertions, 2 deletions

diff --git a/packages/SystemUI/src/com/android/keyguard/KeyguardUpdateMonitor.java b/packages/SystemUI/src/com/android/keyguard/KeyguardUpdateMonitor.java
index 83c317fe3061..2bf8fb36469c 100644
--- a/packages/SystemUI/src/com/android/keyguard/KeyguardUpdateMonitor.java
+++ b/packages/SystemUI/src/com/android/keyguard/KeyguardUpdateMonitor.java
@@ -3668,7 +3668,8 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener, Dumpab
         mLogger.logSimState(subId, slotId, state);
 
         boolean becameAbsent = false;
-        if (!SubscriptionManager.isValidSubscriptionId(subId)) {
+        if (!SubscriptionManager.isValidSubscriptionId(subId)
+                && state != TelephonyManager.SIM_STATE_UNKNOWN) {
             mLogger.w("invalid subId in handleSimStateChange()");
             /* Only handle No SIM(ABSENT) and Card Error(CARD_IO_ERROR) due to
              * handleServiceStateChange() handle other case */
@@ -3703,7 +3704,7 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener, Dumpab
             data.subId = subId;
             data.slotId = slotId;
         }
-        if ((changed || becameAbsent) && state != TelephonyManager.SIM_STATE_UNKNOWN) {
+        if ((changed || becameAbsent) || state == TelephonyManager.SIM_STATE_UNKNOWN) {
             for (int i = 0; i < mCallbacks.size(); i++) {
                 KeyguardUpdateMonitorCallback cb = mCallbacks.get(i).get();
                 if (cb != null) {
diff --git a/packages/SystemUI/src/com/android/systemui/keyguard/KeyguardViewMediator.java b/packages/SystemUI/src/com/android/systemui/keyguard/KeyguardViewMediator.java
index 6948c8d4e563..0e0cf74ba463 100644
--- a/packages/SystemUI/src/com/android/systemui/keyguard/KeyguardViewMediator.java
+++ b/packages/SystemUI/src/com/android/systemui/keyguard/KeyguardViewMediator.java
@@ -697,6 +697,9 @@ public class KeyguardViewMediator implements CoreStartable, Dumpable,
                         }
                     }
                     break;
+                case TelephonyManager.SIM_STATE_UNKNOWN:
+                    mPendingPinLock = false;
+                    break;
                 default:
                     if (DEBUG_SIM_STATES) Log.v(TAG, "Unspecific state: " + simState);
                     break;
diff --git a/packages/SystemUI/tests/src/com/android/keyguard/KeyguardUpdateMonitorTest.java b/packages/SystemUI/tests/src/com/android/keyguard/KeyguardUpdateMonitorTest.java
index 419d045885a8..de306d669476 100644
--- a/packages/SystemUI/tests/src/com/android/keyguard/KeyguardUpdateMonitorTest.java
+++ b/packages/SystemUI/tests/src/com/android/keyguard/KeyguardUpdateMonitorTest.java
@@ -2800,6 +2800,16 @@ public class KeyguardUpdateMonitorTest extends SysuiTestCase {
         );
     }
 
+    @Test
+    public void testOnSimStateChanged_Unknown() {
+        KeyguardUpdateMonitorCallback keyguardUpdateMonitorCallback = spy(
+                KeyguardUpdateMonitorCallback.class);
+        mKeyguardUpdateMonitor.registerCallback(keyguardUpdateMonitorCallback);
+        mKeyguardUpdateMonitor.handleSimStateChange(-1, 0, TelephonyManager.SIM_STATE_UNKNOWN);
+        verify(keyguardUpdateMonitorCallback).onSimStateChanged(-1, 0,
+                TelephonyManager.SIM_STATE_UNKNOWN);
+    }
+
     private void verifyFingerprintAuthenticateNeverCalled() {
         verify(mFingerprintManager, never()).authenticate(any(), any(), any(), any(), any());
         verify(mFingerprintManager, never()).authenticate(any(), any(), any(), any(), anyInt(),