commit af4ab3e2d3665c72889bf2337c744eca6c7d5e86
author Adrian Roos <roosa@google.com> Wed Sep 02 13:23:30 2015 -0700
committer Adrian Roos <roosa@google.com> Thu Sep 03 12:34:12 2015 -0700
tree c36c1e2047078f29a636018390292ca21e01956d
parent f6d51acec69366b6ea34f5e0c9aa8cc840f04a4d

Don't disable fingerprint when entering wrong credential

Bug: 23748205
Change-Id: I0ee2a0562d5ef2992a6a4b40d235601b19dcef16

core/java/com/android/internal/widget/LockPatternUtils.java

diff --git a/core/java/com/android/internal/widget/LockPatternUtils.java b/core/java/com/android/internal/widget/LockPatternUtils.java
index a3a01da..4ac2958 100644
--- a/core/java/com/android/internal/widget/LockPatternUtils.java
+++ b/core/java/com/android/internal/widget/LockPatternUtils.java
@@ -232,7 +232,7 @@
     public void reportFailedPasswordAttempt(int userId) {
         getDevicePolicyManager().reportFailedPasswordAttempt(userId);
         getTrustManager().reportUnlockAttempt(false /* authenticated */, userId);
-        requireCredentialEntry(userId);
+        requireStrongAuth(StrongAuthTracker.SOME_AUTH_REQUIRED_AFTER_WRONG_CREDENTIAL, userId);
     }
 
     public void reportSuccessfulPasswordAttempt(int userId) {
@@ -1281,10 +1281,17 @@
          */
         public static final int STRONG_AUTH_REQUIRED_AFTER_LOCKOUT = 0x8;
 
+        /**
+         * Some authentication is required because the user has entered a wrong credential.
+         */
+        public static final int SOME_AUTH_REQUIRED_AFTER_WRONG_CREDENTIAL = 0x10;
+
         public static final int DEFAULT = STRONG_AUTH_REQUIRED_AFTER_BOOT;
 
-        final SparseIntArray mStrongAuthRequiredForUser = new SparseIntArray();
+        private static final int ALLOWING_FINGERPRINT = STRONG_AUTH_NOT_REQUIRED
+                | SOME_AUTH_REQUIRED_AFTER_WRONG_CREDENTIAL;
 
+        private final SparseIntArray mStrongAuthRequiredForUser = new SparseIntArray();
         private final H mHandler;
 
         public StrongAuthTracker() {
@@ -1323,7 +1330,7 @@
          * current strong authentication requirements.
          */
         public boolean isFingerprintAllowedForUser(int userId) {
-            return getStrongAuthForUser(userId) == STRONG_AUTH_NOT_REQUIRED;
+            return (getStrongAuthForUser(userId) & ~ALLOWING_FINGERPRINT) == 0;
         }
 
         /**