From 2d6aa76f7c765ac129d5ac163460eb8e62080afa Mon Sep 17 00:00:00 2001 From: Daniel Micay 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 @@ + + 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 @@ Switch input method + + Change encryption password + + + Change the password used for device encryption + + + Set encryption password + 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"/> + + + + + 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 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; + } + } +}