From 2d6aa76f7c765ac129d5ac163460eb8e62080afa Mon Sep 17 00:00:00 2001
From: Daniel Micay <danielmicay@gmail.com>
Date: Mon, 15 Jun 2015 10:06:33 -0400
Subject: [PATCH] support setting a separate encryption password
---
AndroidManifest.xml | 3 +
res/values/strings.xml | 9 +
res/xml/security_settings_encrypted.xml | 10 +
.../android/settings/ChooseEncryptionPassword.java | 682 +++++++++++++++++++++
4 files changed, 704 insertions(+)
create mode 100644 src/com/android/settings/ChooseEncryptionPassword.java
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 63648fc..a561d7e 100755
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -1524,6 +1524,9 @@
<activity android:name="ChooseLockPassword" android:exported="false"
android:windowSoftInputMode="stateVisible|adjustResize"/>
+ <activity android:name="ChooseEncryptionPassword" android:exported="false"
+ android:windowSoftInputMode="stateVisible|adjustResize"/>
+
<activity android:name=".SetupEncryptionInterstitial"
android:taskAffinity="com.android.wizard"
android:theme="@style/SetupWizardDisableAppStartingTheme"/>
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 3072f33..d5324f1 100755
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -937,6 +937,15 @@
<!-- Image button description to switch input method -->
<string name="crypt_keeper_switch_input_method">Switch input method</string>
+ <!-- Title for PreferenceScreen to change encryption password [CHAR LIMIT=22] -->
+ <string name="crypt_keeper_change_password_title">Change encryption password</string>
+
+ <!-- Summary for PreferenceScreen to change encryption password [CHAR LIMIT=45] -->
+ <string name="crypt_keeper_change_password_summary">Change the password used for device encryption</string>
+
+ <!-- Header on first screen of choose encryption password [CHAR LIMIT=30] -->
+ <string name="crypt_keeper_choose_your_password_header">Set encryption password</string>
+
<!-- Unlock Picker Settings --><skip />
<!-- Security Picker --><skip />
diff --git a/res/xml/security_settings_encrypted.xml b/res/xml/security_settings_encrypted.xml
index 2399243..f05bad5 100644
--- a/res/xml/security_settings_encrypted.xml
+++ b/res/xml/security_settings_encrypted.xml
@@ -27,6 +27,16 @@
android:title="@string/crypt_keeper_encrypt_title"
android:summary="@string/crypt_keeper_encrypted_summary"/>
+ <Preference
+ android:key="crypt_keeper_change_password"
+ android:title="@string/crypt_keeper_change_password_title"
+ android:summary="@string/crypt_keeper_change_password_summary">
+
+ <intent android:action="android.intent.action.MAIN"
+ android:targetPackage="com.android.settings"
+ android:targetClass="com.android.settings.ChooseEncryptionPassword" />
+ </Preference>
+
</PreferenceCategory>
diff --git a/src/com/android/settings/ChooseEncryptionPassword.java b/src/com/android/settings/ChooseEncryptionPassword.java
new file mode 100644
index 0000000..43e2b0e
--- /dev/null
+++ b/src/com/android/settings/ChooseEncryptionPassword.java
@@ -0,0 +1,682 @@
+/*
+ * Copyright (C) 2015 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.settings;
+
+import com.android.internal.logging.MetricsLogger;
+import com.android.internal.widget.LockPatternUtils;
+import com.android.internal.widget.PasswordEntryKeyboardHelper;
+import com.android.internal.widget.PasswordEntryKeyboardView;
+import com.android.internal.widget.TextViewInputDisabler;
+import com.android.internal.widget.LockPatternUtils.RequestThrottledException;
+import com.android.settings.notification.RedactionInterstitial;
+
+import android.app.Activity;
+import android.app.Fragment;
+import android.app.admin.DevicePolicyManager;
+import android.content.Context;
+import android.content.Intent;
+import android.inputmethodservice.KeyboardView;
+import android.os.Bundle;
+import android.os.Handler;
+import android.os.Message;
+import android.os.UserHandle;
+import android.text.Editable;
+import android.text.InputType;
+import android.text.Selection;
+import android.text.Spannable;
+import android.text.TextUtils;
+import android.text.TextWatcher;
+import android.util.Log;
+import android.view.KeyEvent;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.view.View.OnClickListener;
+import android.view.inputmethod.EditorInfo;
+import android.widget.Button;
+import android.widget.TextView;
+import android.widget.TextView.OnEditorActionListener;
+
+public class ChooseEncryptionPassword extends SettingsActivity {
+ public static final String PASSWORD_MIN_KEY = "lockscreen.password_min";
+ public static final String PASSWORD_MAX_KEY = "lockscreen.password_max";
+ public static final String PASSWORD_MIN_LETTERS_KEY = "lockscreen.password_min_letters";
+ public static final String PASSWORD_MIN_LOWERCASE_KEY = "lockscreen.password_min_lowercase";
+ public static final String PASSWORD_MIN_UPPERCASE_KEY = "lockscreen.password_min_uppercase";
+ public static final String PASSWORD_MIN_NUMERIC_KEY = "lockscreen.password_min_numeric";
+ public static final String PASSWORD_MIN_SYMBOLS_KEY = "lockscreen.password_min_symbols";
+ public static final String PASSWORD_MIN_NONLETTER_KEY = "lockscreen.password_min_nonletter";
+
+ private static final String TAG = "ChooseEncryptionPassword";
+
+ @Override
+ public Intent getIntent() {
+ Intent modIntent = new Intent(super.getIntent());
+ modIntent.putExtra(EXTRA_SHOW_FRAGMENT, getFragmentClass().getName());
+ return modIntent;
+ }
+
+ public static Intent createIntent(Context context, int quality,
+ int minLength, final int maxLength, boolean requirePasswordToDecrypt,
+ boolean confirmCredentials) {
+ Intent intent = new Intent().setClass(context, ChooseEncryptionPassword.class);
+ intent.putExtra(LockPatternUtils.PASSWORD_TYPE_KEY, quality);
+ intent.putExtra(PASSWORD_MIN_KEY, minLength);
+ intent.putExtra(PASSWORD_MAX_KEY, maxLength);
+ intent.putExtra(ChooseLockGeneric.CONFIRM_CREDENTIALS, confirmCredentials);
+ intent.putExtra(EncryptionInterstitial.EXTRA_REQUIRE_PASSWORD, requirePasswordToDecrypt);
+ return intent;
+ }
+
+ public static Intent createIntent(Context context, int quality,
+ int minLength, final int maxLength, boolean requirePasswordToDecrypt, String password) {
+ Intent intent = createIntent(context, quality, minLength, maxLength,
+ requirePasswordToDecrypt, false);
+ intent.putExtra(ChooseLockSettingsHelper.EXTRA_KEY_PASSWORD, password);
+ return intent;
+ }
+
+ public static Intent createIntent(Context context, int quality,
+ int minLength, final int maxLength, boolean requirePasswordToDecrypt, long challenge) {
+ Intent intent = createIntent(context, quality, minLength, maxLength,
+ requirePasswordToDecrypt, false);
+ intent.putExtra(ChooseLockSettingsHelper.EXTRA_KEY_HAS_CHALLENGE, true);
+ intent.putExtra(ChooseLockSettingsHelper.EXTRA_KEY_CHALLENGE, challenge);
+ return intent;
+ }
+
+ @Override
+ protected boolean isValidFragment(String fragmentName) {
+ if (ChooseEncryptionPasswordFragment.class.getName().equals(fragmentName)) return true;
+ return false;
+ }
+
+ /* package */ Class<? extends Fragment> getFragmentClass() {
+ return ChooseEncryptionPasswordFragment.class;
+ }
+
+ @Override
+ public void onCreate(Bundle savedInstanceState) {
+ // TODO: Fix on phones
+ // Disable IME on our window since we provide our own keyboard
+ //getWindow().setFlags(WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM,
+ //WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM);
+ super.onCreate(savedInstanceState);
+ CharSequence msg = getText(R.string.lockpassword_choose_your_password_header);
+ setTitle(msg);
+ }
+
+ public static class ChooseEncryptionPasswordFragment extends InstrumentedFragment
+ implements OnClickListener, OnEditorActionListener, TextWatcher,
+ SaveAndFinishWorker.Listener {
+ private static final String KEY_FIRST_PIN = "first_pin";
+ private static final String KEY_UI_STAGE = "ui_stage";
+ private static final String KEY_CURRENT_PASSWORD = "current_password";
+ private static final String FRAGMENT_TAG_SAVE_AND_FINISH = "save_and_finish_worker";
+
+ private String mCurrentPassword;
+ private String mChosenPassword;
+ private boolean mHasChallenge;
+ private long mChallenge;
+ private TextView mPasswordEntry;
+ private TextViewInputDisabler mPasswordEntryInputDisabler;
+ private int mPasswordMinLength = LockPatternUtils.MIN_LOCK_PASSWORD_SIZE;
+ private int mPasswordMaxLength = 16;
+ private int mPasswordMinLetters = 0;
+ private int mPasswordMinUpperCase = 0;
+ private int mPasswordMinLowerCase = 0;
+ private int mPasswordMinSymbols = 0;
+ private int mPasswordMinNumeric = 0;
+ private int mPasswordMinNonLetter = 0;
+ private LockPatternUtils mLockPatternUtils;
+ private SaveAndFinishWorker mSaveAndFinishWorker;
+ private int mRequestedQuality = DevicePolicyManager.PASSWORD_QUALITY_ALPHABETIC;
+ private ChooseLockSettingsHelper mChooseLockSettingsHelper;
+ private Stage mUiStage = Stage.Introduction;
+
+ private TextView mHeaderText;
+ private String mFirstPin;
+ private KeyboardView mKeyboardView;
+ private PasswordEntryKeyboardHelper mKeyboardHelper;
+ private boolean mIsAlphaMode;
+ private Button mCancelButton;
+ private Button mNextButton;
+ private static final int CONFIRM_EXISTING_REQUEST = 58;
+ static final int RESULT_FINISHED = RESULT_FIRST_USER;
+ private static final long ERROR_MESSAGE_TIMEOUT = 3000;
+ private static final int MSG_SHOW_ERROR = 1;
+
+ private Handler mHandler = new Handler() {
+ @Override
+ public void handleMessage(Message msg) {
+ if (msg.what == MSG_SHOW_ERROR) {
+ updateStage((Stage) msg.obj);
+ }
+ }
+ };
+
+ /**
+ * Keep track internally of where the user is in choosing a pattern.
+ */
+ protected enum Stage {
+
+ Introduction(R.string.lockpassword_choose_your_password_header,
+ R.string.lockpassword_choose_your_pin_header,
+ R.string.lockpassword_continue_label),
+
+ NeedToConfirm(R.string.lockpassword_confirm_your_password_header,
+ R.string.lockpassword_confirm_your_pin_header,
+ R.string.lockpassword_ok_label),
+
+ ConfirmWrong(R.string.lockpassword_confirm_passwords_dont_match,
+ R.string.lockpassword_confirm_pins_dont_match,
+ R.string.lockpassword_continue_label);
+
+ Stage(int hintInAlpha, int hintInNumeric, int nextButtonText) {
+ this.alphaHint = hintInAlpha;
+ this.numericHint = hintInNumeric;
+ this.buttonText = nextButtonText;
+ }
+
+ public final int alphaHint;
+ public final int numericHint;
+ public final int buttonText;
+ }
+
+ // required constructor for fragments
+ public ChooseEncryptionPasswordFragment() {
+
+ }
+
+ @Override
+ public void onCreate(Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+ mLockPatternUtils = new LockPatternUtils(getActivity());
+ Intent intent = getActivity().getIntent();
+ if (!(getActivity() instanceof ChooseEncryptionPassword)) {
+ throw new SecurityException("Fragment contained in wrong activity");
+ }
+ mRequestedQuality = Math.max(intent.getIntExtra(LockPatternUtils.PASSWORD_TYPE_KEY,
+ mRequestedQuality), mLockPatternUtils.getRequestedPasswordQuality(
+ UserHandle.myUserId()));
+ mPasswordMinLength = Math.max(Math.max(
+ LockPatternUtils.MIN_LOCK_PASSWORD_SIZE,
+ intent.getIntExtra(PASSWORD_MIN_KEY, mPasswordMinLength)),
+ mLockPatternUtils.getRequestedMinimumPasswordLength(UserHandle.myUserId()));
+ mPasswordMaxLength = intent.getIntExtra(PASSWORD_MAX_KEY, mPasswordMaxLength);
+ mPasswordMinLetters = Math.max(intent.getIntExtra(PASSWORD_MIN_LETTERS_KEY,
+ mPasswordMinLetters), mLockPatternUtils.getRequestedPasswordMinimumLetters(
+ UserHandle.myUserId()));
+ mPasswordMinUpperCase = Math.max(intent.getIntExtra(PASSWORD_MIN_UPPERCASE_KEY,
+ mPasswordMinUpperCase), mLockPatternUtils.getRequestedPasswordMinimumUpperCase(
+ UserHandle.myUserId()));
+ mPasswordMinLowerCase = Math.max(intent.getIntExtra(PASSWORD_MIN_LOWERCASE_KEY,
+ mPasswordMinLowerCase), mLockPatternUtils.getRequestedPasswordMinimumLowerCase(
+ UserHandle.myUserId()));
+ mPasswordMinNumeric = Math.max(intent.getIntExtra(PASSWORD_MIN_NUMERIC_KEY,
+ mPasswordMinNumeric), mLockPatternUtils.getRequestedPasswordMinimumNumeric(
+ UserHandle.myUserId()));
+ mPasswordMinSymbols = Math.max(intent.getIntExtra(PASSWORD_MIN_SYMBOLS_KEY,
+ mPasswordMinSymbols), mLockPatternUtils.getRequestedPasswordMinimumSymbols(
+ UserHandle.myUserId()));
+ mPasswordMinNonLetter = Math.max(intent.getIntExtra(PASSWORD_MIN_NONLETTER_KEY,
+ mPasswordMinNonLetter), mLockPatternUtils.getRequestedPasswordMinimumNonLetter(
+ UserHandle.myUserId()));
+
+ mChooseLockSettingsHelper = new ChooseLockSettingsHelper(getActivity());
+ }
+
+ @Override
+ public View onCreateView(LayoutInflater inflater, ViewGroup container,
+ Bundle savedInstanceState) {
+ return inflater.inflate(R.layout.choose_lock_password, container, false);
+ }
+
+ @Override
+ public void onViewCreated(View view, Bundle savedInstanceState) {
+ super.onViewCreated(view, savedInstanceState);
+
+ mCancelButton = (Button) view.findViewById(R.id.cancel_button);
+ mCancelButton.setOnClickListener(this);
+ mNextButton = (Button) view.findViewById(R.id.next_button);
+ mNextButton.setOnClickListener(this);
+
+ mIsAlphaMode = DevicePolicyManager.PASSWORD_QUALITY_ALPHABETIC == mRequestedQuality
+ || DevicePolicyManager.PASSWORD_QUALITY_ALPHANUMERIC == mRequestedQuality
+ || DevicePolicyManager.PASSWORD_QUALITY_COMPLEX == mRequestedQuality;
+ mKeyboardView = (PasswordEntryKeyboardView) view.findViewById(R.id.keyboard);
+ mPasswordEntry = (TextView) view.findViewById(R.id.password_entry);
+ mPasswordEntry.setOnEditorActionListener(this);
+ mPasswordEntry.addTextChangedListener(this);
+ mPasswordEntryInputDisabler = new TextViewInputDisabler(mPasswordEntry);
+
+ final Activity activity = getActivity();
+ mKeyboardHelper = new PasswordEntryKeyboardHelper(activity,
+ mKeyboardView, mPasswordEntry);
+ mKeyboardHelper.setKeyboardMode(mIsAlphaMode ?
+ PasswordEntryKeyboardHelper.KEYBOARD_MODE_ALPHA
+ : PasswordEntryKeyboardHelper.KEYBOARD_MODE_NUMERIC);
+
+ mHeaderText = (TextView) view.findViewById(R.id.headerText);
+ mKeyboardView.requestFocus();
+
+ int currentType = mPasswordEntry.getInputType();
+ mPasswordEntry.setInputType(mIsAlphaMode ? currentType
+ : (InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_VARIATION_PASSWORD));
+
+ Intent intent = getActivity().getIntent();
+ final boolean confirmCredentials = intent.getBooleanExtra(
+ ChooseLockGeneric.CONFIRM_CREDENTIALS, true);
+ mCurrentPassword = intent.getStringExtra(ChooseLockSettingsHelper.EXTRA_KEY_PASSWORD);
+ mHasChallenge = intent.getBooleanExtra(
+ ChooseLockSettingsHelper.EXTRA_KEY_HAS_CHALLENGE, false);
+ mChallenge = intent.getLongExtra(ChooseLockSettingsHelper.EXTRA_KEY_CHALLENGE, 0);
+ if (savedInstanceState == null) {
+ updateStage(Stage.Introduction);
+ if (confirmCredentials) {
+ mChooseLockSettingsHelper.launchConfirmationActivity(CONFIRM_EXISTING_REQUEST,
+ getString(R.string.unlock_set_unlock_launch_picker_title), true);
+ }
+ } else {
+ // restore from previous state
+ mFirstPin = savedInstanceState.getString(KEY_FIRST_PIN);
+ final String state = savedInstanceState.getString(KEY_UI_STAGE);
+ if (state != null) {
+ mUiStage = Stage.valueOf(state);
+ updateStage(mUiStage);
+ }
+
+ if (mCurrentPassword == null) {
+ mCurrentPassword = savedInstanceState.getString(KEY_CURRENT_PASSWORD);
+ }
+
+ // Re-attach to the exiting worker if there is one.
+ mSaveAndFinishWorker = (SaveAndFinishWorker) getFragmentManager().findFragmentByTag(
+ FRAGMENT_TAG_SAVE_AND_FINISH);
+ }
+ if (activity instanceof SettingsActivity) {
+ final SettingsActivity sa = (SettingsActivity) activity;
+ int id = mIsAlphaMode ? R.string.lockpassword_choose_your_password_header
+ : R.string.lockpassword_choose_your_pin_header;
+ CharSequence title = getText(id);
+ sa.setTitle(title);
+ }
+ }
+
+ @Override
+ protected int getMetricsCategory() {
+ return MetricsLogger.CHOOSE_LOCK_PASSWORD;
+ }
+
+ @Override
+ public void onResume() {
+ super.onResume();
+ updateStage(mUiStage);
+ if (mSaveAndFinishWorker != null) {
+ mSaveAndFinishWorker.setListener(this);
+ } else {
+ mKeyboardView.requestFocus();
+ }
+ }
+
+ @Override
+ public void onPause() {
+ mHandler.removeMessages(MSG_SHOW_ERROR);
+ if (mSaveAndFinishWorker != null) {
+ mSaveAndFinishWorker.setListener(null);
+ }
+
+ super.onPause();
+ }
+
+ @Override
+ public void onSaveInstanceState(Bundle outState) {
+ super.onSaveInstanceState(outState);
+ outState.putString(KEY_UI_STAGE, mUiStage.name());
+ outState.putString(KEY_FIRST_PIN, mFirstPin);
+ outState.putString(KEY_CURRENT_PASSWORD, mCurrentPassword);
+ }
+
+ @Override
+ public void onActivityResult(int requestCode, int resultCode,
+ Intent data) {
+ super.onActivityResult(requestCode, resultCode, data);
+ switch (requestCode) {
+ case CONFIRM_EXISTING_REQUEST:
+ if (resultCode != Activity.RESULT_OK) {
+ getActivity().setResult(RESULT_FINISHED);
+ getActivity().finish();
+ } else {
+ mCurrentPassword = data.getStringExtra(
+ ChooseLockSettingsHelper.EXTRA_KEY_PASSWORD);
+ }
+ break;
+ }
+ }
+
+ protected Intent getRedactionInterstitialIntent(Context context) {
+ return RedactionInterstitial.createStartIntent(context);
+ }
+
+ protected void updateStage(Stage stage) {
+ final Stage previousStage = mUiStage;
+ mUiStage = stage;
+ updateUi();
+
+ // If the stage changed, announce the header for accessibility. This
+ // is a no-op when accessibility is disabled.
+ if (previousStage != stage) {
+ mHeaderText.announceForAccessibility(mHeaderText.getText());
+ }
+ }
+
+ /**
+ * Validates PIN and returns a message to display if PIN fails test.
+ * @param password the raw password the user typed in
+ * @return error message to show to user or null if password is OK
+ */
+ private String validatePassword(String password) {
+ if (password.length() < mPasswordMinLength) {
+ return getString(mIsAlphaMode ?
+ R.string.lockpassword_password_too_short
+ : R.string.lockpassword_pin_too_short, mPasswordMinLength);
+ }
+ if (password.length() > mPasswordMaxLength) {
+ return getString(mIsAlphaMode ?
+ R.string.lockpassword_password_too_long
+ : R.string.lockpassword_pin_too_long, mPasswordMaxLength + 1);
+ }
+ int letters = 0;
+ int numbers = 0;
+ int lowercase = 0;
+ int symbols = 0;
+ int uppercase = 0;
+ int nonletter = 0;
+ for (int i = 0; i < password.length(); i++) {
+ char c = password.charAt(i);
+ // allow non control Latin-1 characters only
+ if (c < 32 || c > 127) {
+ return getString(R.string.lockpassword_illegal_character);
+ }
+ if (c >= '0' && c <= '9') {
+ numbers++;
+ nonletter++;
+ } else if (c >= 'A' && c <= 'Z') {
+ letters++;
+ uppercase++;
+ } else if (c >= 'a' && c <= 'z') {
+ letters++;
+ lowercase++;
+ } else {
+ symbols++;
+ nonletter++;
+ }
+ }
+ if (DevicePolicyManager.PASSWORD_QUALITY_NUMERIC == mRequestedQuality
+ || DevicePolicyManager.PASSWORD_QUALITY_NUMERIC_COMPLEX == mRequestedQuality) {
+ if (letters > 0 || symbols > 0) {
+ // This shouldn't be possible unless user finds some way to bring up
+ // soft keyboard
+ return getString(R.string.lockpassword_pin_contains_non_digits);
+ }
+ // Check for repeated characters or sequences (e.g. '1234', '0000', '2468')
+ final int sequence = LockPatternUtils.maxLengthSequence(password);
+ if (DevicePolicyManager.PASSWORD_QUALITY_NUMERIC_COMPLEX == mRequestedQuality
+ && sequence > LockPatternUtils.MAX_ALLOWED_SEQUENCE) {
+ return getString(R.string.lockpassword_pin_no_sequential_digits);
+ }
+ } else if (DevicePolicyManager.PASSWORD_QUALITY_COMPLEX == mRequestedQuality) {
+ if (letters < mPasswordMinLetters) {
+ return String.format(getResources().getQuantityString(
+ R.plurals.lockpassword_password_requires_letters, mPasswordMinLetters),
+ mPasswordMinLetters);
+ } else if (numbers < mPasswordMinNumeric) {
+ return String.format(getResources().getQuantityString(
+ R.plurals.lockpassword_password_requires_numeric, mPasswordMinNumeric),
+ mPasswordMinNumeric);
+ } else if (lowercase < mPasswordMinLowerCase) {
+ return String.format(getResources().getQuantityString(
+ R.plurals.lockpassword_password_requires_lowercase, mPasswordMinLowerCase),
+ mPasswordMinLowerCase);
+ } else if (uppercase < mPasswordMinUpperCase) {
+ return String.format(getResources().getQuantityString(
+ R.plurals.lockpassword_password_requires_uppercase, mPasswordMinUpperCase),
+ mPasswordMinUpperCase);
+ } else if (symbols < mPasswordMinSymbols) {
+ return String.format(getResources().getQuantityString(
+ R.plurals.lockpassword_password_requires_symbols, mPasswordMinSymbols),
+ mPasswordMinSymbols);
+ } else if (nonletter < mPasswordMinNonLetter) {
+ return String.format(getResources().getQuantityString(
+ R.plurals.lockpassword_password_requires_nonletter, mPasswordMinNonLetter),
+ mPasswordMinNonLetter);
+ }
+ } else {
+ final boolean alphabetic = DevicePolicyManager.PASSWORD_QUALITY_ALPHABETIC
+ == mRequestedQuality;
+ final boolean alphanumeric = DevicePolicyManager.PASSWORD_QUALITY_ALPHANUMERIC
+ == mRequestedQuality;
+ if ((alphabetic || alphanumeric) && letters == 0) {
+ return getString(R.string.lockpassword_password_requires_alpha);
+ }
+ if (alphanumeric && numbers == 0) {
+ return getString(R.string.lockpassword_password_requires_digit);
+ }
+ }
+ if(mLockPatternUtils.checkPasswordHistory(password, UserHandle.myUserId())) {
+ return getString(mIsAlphaMode ? R.string.lockpassword_password_recently_used
+ : R.string.lockpassword_pin_recently_used);
+ }
+
+ return null;
+ }
+
+ public void handleNext() {
+ if (mSaveAndFinishWorker != null) return;
+ mChosenPassword = mPasswordEntry.getText().toString();
+ if (TextUtils.isEmpty(mChosenPassword)) {
+ return;
+ }
+ String errorMsg = null;
+ if (mUiStage == Stage.Introduction) {
+ errorMsg = validatePassword(mChosenPassword);
+ if (errorMsg == null) {
+ mFirstPin = mChosenPassword;
+ mPasswordEntry.setText("");
+ updateStage(Stage.NeedToConfirm);
+ }
+ } else if (mUiStage == Stage.NeedToConfirm) {
+ if (mFirstPin.equals(mChosenPassword)) {
+ startSaveAndFinish();
+ } else {
+ CharSequence tmp = mPasswordEntry.getText();
+ if (tmp != null) {
+ Selection.setSelection((Spannable) tmp, 0, tmp.length());
+ }
+ updateStage(Stage.ConfirmWrong);
+ }
+ }
+ if (errorMsg != null) {
+ showError(errorMsg, mUiStage);
+ }
+ }
+
+ protected void setNextEnabled(boolean enabled) {
+ mNextButton.setEnabled(enabled);
+ }
+
+ protected void setNextText(int text) {
+ mNextButton.setText(text);
+ }
+
+ public void onClick(View v) {
+ switch (v.getId()) {
+ case R.id.next_button:
+ handleNext();
+ break;
+
+ case R.id.cancel_button:
+ getActivity().finish();
+ break;
+ }
+ }
+
+ private void showError(String msg, final Stage next) {
+ mHeaderText.setText(msg);
+ mHeaderText.announceForAccessibility(mHeaderText.getText());
+ Message mesg = mHandler.obtainMessage(MSG_SHOW_ERROR, next);
+ mHandler.removeMessages(MSG_SHOW_ERROR);
+ mHandler.sendMessageDelayed(mesg, ERROR_MESSAGE_TIMEOUT);
+ }
+
+ public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
+ // Check if this was the result of hitting the enter or "done" key
+ if (actionId == EditorInfo.IME_NULL
+ || actionId == EditorInfo.IME_ACTION_DONE
+ || actionId == EditorInfo.IME_ACTION_NEXT) {
+ handleNext();
+ return true;
+ }
+ return false;
+ }
+
+ /**
+ * Update the hint based on current Stage and length of password entry
+ */
+ private void updateUi() {
+ final boolean canInput = mSaveAndFinishWorker == null;
+ String password = mPasswordEntry.getText().toString();
+ final int length = password.length();
+ if (mUiStage == Stage.Introduction) {
+ if (length < mPasswordMinLength) {
+ String msg = getString(mIsAlphaMode ? R.string.lockpassword_password_too_short
+ : R.string.lockpassword_pin_too_short, mPasswordMinLength);
+ mHeaderText.setText(msg);
+ setNextEnabled(false);
+ } else {
+ String error = validatePassword(password);
+ if (error != null) {
+ mHeaderText.setText(error);
+ setNextEnabled(false);
+ } else {
+ mHeaderText.setText(R.string.lockpassword_press_continue);
+ setNextEnabled(true);
+ }
+ }
+ } else {
+ mHeaderText.setText(mIsAlphaMode ? mUiStage.alphaHint : mUiStage.numericHint);
+ setNextEnabled(canInput && length > 0);
+ }
+ setNextText(mUiStage.buttonText);
+ mPasswordEntryInputDisabler.setInputEnabled(canInput);
+ }
+
+ public void afterTextChanged(Editable s) {
+ // Changing the text while error displayed resets to NeedToConfirm state
+ if (mUiStage == Stage.ConfirmWrong) {
+ mUiStage = Stage.NeedToConfirm;
+ }
+ updateUi();
+ }
+
+ public void beforeTextChanged(CharSequence s, int start, int count, int after) {
+
+ }
+
+ public void onTextChanged(CharSequence s, int start, int before, int count) {
+
+ }
+
+ private void startSaveAndFinish() {
+ if (mSaveAndFinishWorker != null) {
+ Log.w(TAG, "startSaveAndFinish with an existing SaveAndFinishWorker.");
+ return;
+ }
+
+ mPasswordEntryInputDisabler.setInputEnabled(false);
+ setNextEnabled(false);
+
+ mSaveAndFinishWorker = new SaveAndFinishWorker();
+ getFragmentManager().beginTransaction().add(mSaveAndFinishWorker,
+ FRAGMENT_TAG_SAVE_AND_FINISH).commit();
+ mSaveAndFinishWorker.setListener(this);
+
+ final boolean required = getActivity().getIntent().getBooleanExtra(
+ EncryptionInterstitial.EXTRA_REQUIRE_PASSWORD, true);
+ mSaveAndFinishWorker.start(mLockPatternUtils, required, mHasChallenge, mChallenge,
+ mChosenPassword, mCurrentPassword, mRequestedQuality);
+ }
+
+ @Override
+ public void onChosenLockSaveFinished(boolean wasSecureBefore, Intent resultData) {
+ getActivity().setResult(RESULT_FINISHED, resultData);
+ getActivity().finish();
+
+ if (!wasSecureBefore) {
+ Intent intent = getRedactionInterstitialIntent(getActivity());
+ if (intent != null) {
+ startActivity(intent);
+ }
+ }
+ }
+ }
+
+ private static class SaveAndFinishWorker extends SaveChosenLockWorkerBase {
+
+ private String mChosenPassword;
+ private String mCurrentPassword;
+ private int mRequestedQuality;
+
+ public void start(LockPatternUtils utils, boolean required,
+ boolean hasChallenge, long challenge,
+ String chosenPassword, String currentPassword, int requestedQuality) {
+ prepare(utils, required, hasChallenge, challenge);
+
+ mChosenPassword = chosenPassword;
+ mCurrentPassword = currentPassword;
+ mRequestedQuality = requestedQuality;
+
+ start();
+ }
+
+ @Override
+ protected Intent saveAndVerifyInBackground() {
+ Intent result = null;
+ final int userId = UserHandle.myUserId();
+ mUtils.setCredentialRequiredToDecrypt(true);
+ mUtils.setSeparateEncryptionPassword(mChosenPassword);
+
+ if (mHasChallenge) {
+ byte[] token;
+ try {
+ token = mUtils.verifyPassword(mChosenPassword, mChallenge, userId);
+ } catch (RequestThrottledException e) {
+ token = null;
+ }
+
+ if (token == null) {
+ Log.e(TAG, "critical: no token returned for known good password.");
+ }
+
+ result = new Intent();
+ result.putExtra(ChooseLockSettingsHelper.EXTRA_KEY_CHALLENGE_TOKEN, token);
+ }
+
+ return result;
+ }
+ }
+}