Support default, pattern, pin and password encryption types

Use plumbing provided by dependant change to bring up correct dialog
at boot time.

Needs matching framework changes from
 https://googleplex-android-review.googlesource.com/#/c/412885/

Bug: 8769627
Change-Id: Ib04a2875e051a7cccca035fadb25978dfec22491

res/layout/crypt_keeper_pattern_entry.xml

@@ -0,0 +1,49 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+**
+** Copyright 2014, 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.
+*/
+-->
+
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+>
+    <include layout="@layout/crypt_keeper_status" />
+
+    <LinearLayout
+        android:layout_height="wrap_content"
+        android:layout_width="match_parent"
+        android:layout_marginStart="8dip"
+        android:layout_marginEnd="8dip"
+        android:orientation="horizontal"
+    >
+        <include layout="@layout/crypt_keeper_pattern_field" />
+    </LinearLayout>
+
+    <!-- Emergency call button.
+         Text and icon are set by CryptKeeper.updateEmergencyCallButtonState() -->
+    <Button android:id="@+id/emergencyCallButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="center"
+        android:layout_marginTop="16dip"
+        style="@*android:style/Widget.Button.Transparent"
+        android:textSize="14sp"
+        android:drawablePadding="6dip"
+    />
+
+</LinearLayout>

res/layout/crypt_keeper_pattern_field.xml

@@ -0,0 +1,38 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+**
+** Copyright 2014, 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.
+*/
+-->
+
+<!-- Contents of the password entry field for CryptKeeper. Comes with an IME
+     switcher, if necessary. Assumed to be in a horizontal LinearLayout. -->
+<merge xmlns:android="http://schemas.android.com/apk/res/android">
+   <com.android.internal.widget.LockPatternView android:id="@+id/lockPattern"
+       android:layout_width="match_parent"
+       android:layout_height="match_parent" />
+
+   <ImageView android:id="@+id/switch_ime_button"
+       android:layout_width="wrap_content"
+       android:layout_height="wrap_content"
+       android:src="@drawable/ic_lockscreen_ime"
+       android:clickable="true"
+       android:contentDescription="@string/crypt_keeper_switch_input_method"
+       android:padding="8dip"
+       android:layout_gravity="center"
+       android:background="?android:attr/selectableItemBackground"
+       android:visibility="gone"
+   />
+</merge>

res/layout/crypt_keeper_pin_entry.xml

@@ -0,0 +1,49 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+**
+** Copyright 2014, 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.
+*/
+-->
+
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+>
+    <include layout="@layout/crypt_keeper_status" />
+
+    <LinearLayout
+        android:layout_height="wrap_content"
+        android:layout_width="match_parent"
+        android:layout_marginStart="8dip"
+        android:layout_marginEnd="8dip"
+        android:orientation="horizontal"
+    >
+        <include layout="@layout/crypt_keeper_pin_field" />
+    </LinearLayout>
+
+    <!-- Emergency call button.
+         Text and icon are set by CryptKeeper.updateEmergencyCallButtonState() -->
+    <Button android:id="@+id/emergencyCallButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="center"
+        android:layout_marginTop="16dip"
+        style="@*android:style/Widget.Button.Transparent"
+        android:textSize="14sp"
+        android:drawablePadding="6dip"
+    />
+
+</LinearLayout>

res/layout/crypt_keeper_pin_field.xml

@@ -0,0 +1,44 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+**
+** Copyright 2014, 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.
+*/
+-->
+
+<!-- Contents of the password entry field for CryptKeeper. Comes with an IME
+     switcher, if necessary. Assumed to be in a horizontal LinearLayout. -->
+<merge xmlns:android="http://schemas.android.com/apk/res/android">
+    <EditText android:id="@+id/passwordEntry"
+        android:layout_height="wrap_content"
+        android:layout_width="0dip"
+        android:layout_weight="1"
+        android:singleLine="true"
+        android:inputType="numberPassword"
+        android:imeOptions="flagForceAscii|actionDone"
+        android:textAppearance="?android:attr/textAppearanceMedium"
+     />
+
+   <ImageView android:id="@+id/switch_ime_button"
+       android:layout_width="wrap_content"
+       android:layout_height="wrap_content"
+       android:src="@drawable/ic_lockscreen_ime"
+       android:clickable="true"
+       android:contentDescription="@string/crypt_keeper_switch_input_method"
+       android:padding="8dip"
+       android:layout_gravity="center"
+       android:background="?android:attr/selectableItemBackground"
+       android:visibility="gone"
+   />
+</merge>

src/com/android/settings/ChooseLockGeneric.java

@@ -226,20 +226,7 @@ public class ChooseLockGeneric extends SettingsActivity {
         private int upgradeQuality(int quality, MutableBoolean allowBiometric) {
             quality = upgradeQualityForDPM(quality);
             quality = upgradeQualityForKeyStore(quality);
-            int encryptionQuality = upgradeQualityForEncryption(quality);
+            return quality;
-            if (encryptionQuality > quality) {
-                //The first case checks whether biometric is allowed, prior to the user making
-                //their selection from the list
-                if (allowBiometric != null) {
-                    allowBiometric.value = quality <=
-                            DevicePolicyManager.PASSWORD_QUALITY_BIOMETRIC_WEAK;
-                } else if (quality == DevicePolicyManager.PASSWORD_QUALITY_BIOMETRIC_WEAK) {
-                    //When the user has selected biometric we shouldn't change that due to
-                    //encryption
-                    return quality;
-                }
-            }
-            return encryptionQuality;
         }
 
         private int upgradeQualityForDPM(int quality) {
@@ -251,27 +238,6 @@ public class ChooseLockGeneric extends SettingsActivity {
             return quality;
         }
 
-        /**
-         * Mix in "encryption minimums" to any given quality value.  This prevents users
-         * from downgrading the pattern/pin/password to a level below the minimums.
-         *
-         * ASSUMPTION:  Setting quality is sufficient (e.g. minimum lengths will be set
-         * appropriately.)
-         */
-        private int upgradeQualityForEncryption(int quality) {
-            // Don't upgrade quality for secondary users. Encryption requirements don't apply.
-            if (!Process.myUserHandle().equals(UserHandle.OWNER)) return quality;
-            int encryptionStatus = mDPM.getStorageEncryptionStatus();
-            boolean encrypted = (encryptionStatus == DevicePolicyManager.ENCRYPTION_STATUS_ACTIVE)
-                    || (encryptionStatus == DevicePolicyManager.ENCRYPTION_STATUS_ACTIVATING);
-            if (encrypted) {
-                if (quality < CryptKeeperSettings.MIN_PASSWORD_QUALITY) {
-                    quality = CryptKeeperSettings.MIN_PASSWORD_QUALITY;
-                }
-            }
-            return quality;
-        }
-
         private int upgradeQualityForKeyStore(int quality) {
             if (!mKeyStore.isEmpty()) {
                 if (quality < CredentialStorage.MIN_PASSWORD_QUALITY) {

src/com/android/settings/CryptKeeper.java

@@ -34,6 +34,7 @@ import android.os.ServiceManager;
 import android.os.SystemProperties;
 import android.os.UserHandle;
 import android.os.storage.IMountService;
+import android.os.storage.StorageManager;
 import android.provider.Settings;
 import android.telephony.TelephonyManager;
 import android.text.Editable;
@@ -60,6 +61,9 @@ import com.android.internal.statusbar.StatusBarIcon;
 import com.android.internal.telephony.ITelephony;
 import com.android.internal.telephony.Phone;
 import com.android.internal.telephony.PhoneConstants;
+import com.android.internal.widget.LockPatternUtils;
+import com.android.internal.widget.LockPatternView;
+import com.android.internal.widget.LockPatternView.Cell;
 
 import java.util.List;
 
@@ -113,6 +117,7 @@ public class CryptKeeper extends Activity implements TextView.OnEditorActionList
     private int mCooldown;
     PowerManager.WakeLock mWakeLock;
     private EditText mPasswordEntry;
+    private LockPatternView mLockPatternView;
     /** Number of calls to {@link #notifyUser()} to ignore before notifying. */
     private int mNotificationCountdown = 0;
 
@@ -175,7 +180,9 @@ public class CryptKeeper extends Activity implements TextView.OnEditorActionList
                 final TextView status = (TextView) findViewById(R.id.status);
                 status.setText(R.string.try_again);
                 // Reenable the password entry
-                mPasswordEntry.setEnabled(true);
+                if (mPasswordEntry != null) {
+                    mPasswordEntry.setEnabled(true);
+                }
             }
         }
     }
@@ -354,7 +361,21 @@ public class CryptKeeper extends Activity implements TextView.OnEditorActionList
             setContentView(R.layout.crypt_keeper_progress);
             encryptionProgressInit();
         } else if (mValidationComplete || isDebugView(FORCE_VIEW_PASSWORD)) {
-            setContentView(R.layout.crypt_keeper_password_entry);
+            final IMountService service = getMountService();
+            int type = StorageManager.CRYPT_TYPE_PASSWORD;
+            try {
+                type = service.getPasswordType();
+            } catch (Exception e) {
+                Log.e(TAG, "Error while getting type - showing default dialog" + e);
+            }
+
+            if(type == StorageManager.CRYPT_TYPE_PIN) {
+                setContentView(R.layout.crypt_keeper_pin_entry);
+            } else if (type == StorageManager.CRYPT_TYPE_PATTERN) {
+                setContentView(R.layout.crypt_keeper_pattern_entry);
+            } else {
+                setContentView(R.layout.crypt_keeper_password_entry);
+            }
             passwordEntryInit();
         } else if (!mValidationRequested) {
             // We're supposed to be encrypted, but no validation has been done.
@@ -503,14 +524,44 @@ public class CryptKeeper extends Activity implements TextView.OnEditorActionList
         }
     }
 
-    private void passwordEntryInit() {
+    protected LockPatternView.OnPatternListener mChooseNewLockPatternListener =
+            new LockPatternView.OnPatternListener() {
+
+            @Override
+            public void onPatternStart() {
+            }
+
+            @Override
+            public void onPatternCleared() {
+            }
+
+            @Override
+            public void onPatternDetected(List<LockPatternView.Cell> pattern) {
+                new DecryptTask().execute(LockPatternUtils.patternToString(pattern));
+            }
+
+            @Override
+            public void onPatternCellAdded(List<Cell> pattern) {
+            }
+     };
+
+     private void passwordEntryInit() {
+        // Password/pin case
         mPasswordEntry = (EditText) findViewById(R.id.passwordEntry);
-        mPasswordEntry.setOnEditorActionListener(this);
+        if (mPasswordEntry != null){
-        mPasswordEntry.requestFocus();
+            mPasswordEntry.setOnEditorActionListener(this);
-        // Become quiet when the user interacts with the Edit text screen.
+            mPasswordEntry.requestFocus();
-        mPasswordEntry.setOnKeyListener(this);
+            // Become quiet when the user interacts with the Edit text screen.
-        mPasswordEntry.setOnTouchListener(this);
+            mPasswordEntry.setOnKeyListener(this);
-        mPasswordEntry.addTextChangedListener(this);
+            mPasswordEntry.setOnTouchListener(this);
+            mPasswordEntry.addTextChangedListener(this);
+        }
+
+        // Pattern case
+        mLockPatternView = (LockPatternView) findViewById(R.id.lockPattern);
+        if (mLockPatternView != null) {
+            mLockPatternView.setOnPatternListener(mChooseNewLockPatternListener);
+        }
 
         // Disable the Emergency call button if the device has no voice telephone capability
         final TelephonyManager tm = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);