1 files changed, 91 insertions, 0 deletions
diff --git a/packages/SystemUI/src/com/android/keyguard/KeyguardSecurityModel.java b/packages/SystemUI/src/com/android/keyguard/KeyguardSecurityModel.java
new file mode 100644
index 000000000000..7baa57e7dae7
--- /dev/null
+++ b/packages/SystemUI/src/com/android/keyguard/KeyguardSecurityModel.java
@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.keyguard;
+
+import android.app.admin.DevicePolicyManager;
+import android.content.Context;
+import android.telephony.SubscriptionManager;
+
+import com.android.internal.telephony.IccCardConstants;
+import com.android.internal.widget.LockPatternUtils;
+
+public class KeyguardSecurityModel {
+
+    /**
+     * The different types of security available.
+     * @see KeyguardSecurityContainer#showSecurityScreen
+     */
+    public enum SecurityMode {
+        Invalid, // NULL state
+        None, // No security enabled
+        Pattern, // Unlock by drawing a pattern.
+        Password, // Unlock by entering an alphanumeric password
+        PIN, // Strictly numeric password
+        SimPin, // Unlock by entering a sim pin.
+        SimPuk // Unlock by entering a sim puk
+    }
+
+    private final Context mContext;
+    private final boolean mIsPukScreenAvailable;
+
+    private LockPatternUtils mLockPatternUtils;
+
+    KeyguardSecurityModel(Context context) {
+        mContext = context;
+        mLockPatternUtils = new LockPatternUtils(context);
+        mIsPukScreenAvailable = mContext.getResources().getBoolean(
+                com.android.internal.R.bool.config_enable_puk_unlock_screen);
+    }
+
+    void setLockPatternUtils(LockPatternUtils utils) {
+        mLockPatternUtils = utils;
+    }
+
+    SecurityMode getSecurityMode(int userId) {
+        KeyguardUpdateMonitor monitor = KeyguardUpdateMonitor.getInstance(mContext);
+
+        if (SubscriptionManager.isValidSubscriptionId(
+                monitor.getNextSubIdForState(IccCardConstants.State.PIN_REQUIRED))) {
+            return SecurityMode.SimPin;
+        }
+
+        if (mIsPukScreenAvailable && SubscriptionManager.isValidSubscriptionId(
+                monitor.getNextSubIdForState(IccCardConstants.State.PUK_REQUIRED))) {
+            return SecurityMode.SimPuk;
+        }
+
+        final int security = mLockPatternUtils.getActivePasswordQuality(userId);
+        switch (security) {
+            case DevicePolicyManager.PASSWORD_QUALITY_NUMERIC:
+            case DevicePolicyManager.PASSWORD_QUALITY_NUMERIC_COMPLEX:
+                return SecurityMode.PIN;
+
+            case DevicePolicyManager.PASSWORD_QUALITY_ALPHABETIC:
+            case DevicePolicyManager.PASSWORD_QUALITY_ALPHANUMERIC:
+            case DevicePolicyManager.PASSWORD_QUALITY_COMPLEX:
+            case DevicePolicyManager.PASSWORD_QUALITY_MANAGED:
+                return SecurityMode.Password;
+
+            case DevicePolicyManager.PASSWORD_QUALITY_SOMETHING:
+                return SecurityMode.Pattern;
+            case DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED:
+                return SecurityMode.None;
+
+            default:
+                throw new IllegalStateException("Unknown security quality:" + security);
+        }
+    }
+}