LockPatternUtils.java revision fc753c0cf676000b1c2d3cb2728af85a9b49f795
1/* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.internal.widget; 18 19import android.app.ActivityManagerNative; 20import android.app.admin.DevicePolicyManager; 21import android.content.ContentResolver; 22import android.content.Context; 23import android.content.Intent; 24import android.content.pm.PackageManager; 25import android.os.Binder; 26import android.os.Bundle; 27import android.os.IBinder; 28import android.os.RemoteException; 29import android.os.ServiceManager; 30import android.os.SystemClock; 31import android.os.UserHandle; 32import android.os.storage.IMountService; 33import android.provider.Settings; 34import android.security.KeyStore; 35import android.telephony.TelephonyManager; 36import android.text.TextUtils; 37import android.util.Log; 38import android.view.View; 39import android.widget.Button; 40 41import com.android.internal.R; 42import com.android.internal.telephony.ITelephony; 43import com.google.android.collect.Lists; 44 45import java.security.MessageDigest; 46import java.security.NoSuchAlgorithmException; 47import java.security.SecureRandom; 48import java.util.List; 49 50/** 51 * Utilities for the lock pattern and its settings. 52 */ 53public class LockPatternUtils { 54 55 private static final String OPTION_ENABLE_FACELOCK = "enable_facelock"; 56 57 private static final String TAG = "LockPatternUtils"; 58 59 /** 60 * The maximum number of incorrect attempts before the user is prevented 61 * from trying again for {@link #FAILED_ATTEMPT_TIMEOUT_MS}. 62 */ 63 public static final int FAILED_ATTEMPTS_BEFORE_TIMEOUT = 5; 64 65 /** 66 * The number of incorrect attempts before which we fall back on an alternative 67 * method of verifying the user, and resetting their lock pattern. 68 */ 69 public static final int FAILED_ATTEMPTS_BEFORE_RESET = 20; 70 71 /** 72 * How long the user is prevented from trying again after entering the 73 * wrong pattern too many times. 74 */ 75 public static final long FAILED_ATTEMPT_TIMEOUT_MS = 30000L; 76 77 /** 78 * The interval of the countdown for showing progress of the lockout. 79 */ 80 public static final long FAILED_ATTEMPT_COUNTDOWN_INTERVAL_MS = 1000L; 81 82 83 /** 84 * This dictates when we start telling the user that continued failed attempts will wipe 85 * their device. 86 */ 87 public static final int FAILED_ATTEMPTS_BEFORE_WIPE_GRACE = 5; 88 89 /** 90 * The minimum number of dots in a valid pattern. 91 */ 92 public static final int MIN_LOCK_PATTERN_SIZE = 4; 93 94 /** 95 * The minimum number of dots the user must include in a wrong pattern 96 * attempt for it to be counted against the counts that affect 97 * {@link #FAILED_ATTEMPTS_BEFORE_TIMEOUT} and {@link #FAILED_ATTEMPTS_BEFORE_RESET} 98 */ 99 public static final int MIN_PATTERN_REGISTER_FAIL = MIN_LOCK_PATTERN_SIZE; 100 101 /** 102 * Tells the keyguard to show the user switcher when the keyguard is created. 103 */ 104 public static final String KEYGUARD_SHOW_USER_SWITCHER = "showuserswitcher"; 105 106 /** 107 * Tells the keyguard to show the security challenge when the keyguard is created. 108 */ 109 public static final String KEYGUARD_SHOW_SECURITY_CHALLENGE = "showsecuritychallenge"; 110 111 /** 112 * Options used to lock the device upon user switch. 113 */ 114 public static final Bundle USER_SWITCH_LOCK_OPTIONS = new Bundle(); 115 116 static { 117 USER_SWITCH_LOCK_OPTIONS.putBoolean(KEYGUARD_SHOW_USER_SWITCHER, true); 118 USER_SWITCH_LOCK_OPTIONS.putBoolean(KEYGUARD_SHOW_SECURITY_CHALLENGE, true); 119 } 120 121 /** 122 * The bit in LOCK_BIOMETRIC_WEAK_FLAGS to be used to indicate whether liveliness should 123 * be used 124 */ 125 public static final int FLAG_BIOMETRIC_WEAK_LIVELINESS = 0x1; 126 127 /** 128 * Pseudo-appwidget id we use to represent the default clock status widget 129 */ 130 public static final int ID_DEFAULT_STATUS_WIDGET = -2; 131 132 /** 133 * Intent extra that's used to tag the default widget when using the picker 134 */ 135 public static final String EXTRA_DEFAULT_WIDGET = "com.android.settings.DEFAULT_WIDGET"; 136 137 protected final static String LOCKOUT_PERMANENT_KEY = "lockscreen.lockedoutpermanently"; 138 protected final static String LOCKOUT_ATTEMPT_DEADLINE = "lockscreen.lockoutattemptdeadline"; 139 protected final static String PATTERN_EVER_CHOSEN_KEY = "lockscreen.patterneverchosen"; 140 public final static String PASSWORD_TYPE_KEY = "lockscreen.password_type"; 141 public static final String PASSWORD_TYPE_ALTERNATE_KEY = "lockscreen.password_type_alternate"; 142 protected final static String LOCK_PASSWORD_SALT_KEY = "lockscreen.password_salt"; 143 protected final static String DISABLE_LOCKSCREEN_KEY = "lockscreen.disabled"; 144 protected final static String LOCKSCREEN_OPTIONS = "lockscreen.options"; 145 public final static String LOCKSCREEN_BIOMETRIC_WEAK_FALLBACK 146 = "lockscreen.biometric_weak_fallback"; 147 public final static String BIOMETRIC_WEAK_EVER_CHOSEN_KEY 148 = "lockscreen.biometricweakeverchosen"; 149 public final static String LOCKSCREEN_POWER_BUTTON_INSTANTLY_LOCKS 150 = "lockscreen.power_button_instantly_locks"; 151 152 protected final static String PASSWORD_HISTORY_KEY = "lockscreen.passwordhistory"; 153 154 private final Context mContext; 155 private final ContentResolver mContentResolver; 156 private DevicePolicyManager mDevicePolicyManager; 157 private ILockSettings mLockSettingsService; 158 159 // The current user is set by KeyguardViewMediator and shared by all LockPatternUtils. 160 private static volatile int sCurrentUserId = UserHandle.USER_NULL; 161 162 public DevicePolicyManager getDevicePolicyManager() { 163 if (mDevicePolicyManager == null) { 164 mDevicePolicyManager = 165 (DevicePolicyManager)mContext.getSystemService(Context.DEVICE_POLICY_SERVICE); 166 if (mDevicePolicyManager == null) { 167 Log.e(TAG, "Can't get DevicePolicyManagerService: is it running?", 168 new IllegalStateException("Stack trace:")); 169 } 170 } 171 return mDevicePolicyManager; 172 } 173 174 /** 175 * @param contentResolver Used to look up and save settings. 176 */ 177 public LockPatternUtils(Context context) { 178 mContext = context; 179 mContentResolver = context.getContentResolver(); 180 } 181 182 private ILockSettings getLockSettings() { 183 if (mLockSettingsService == null) { 184 mLockSettingsService = ILockSettings.Stub.asInterface( 185 (IBinder) ServiceManager.getService("lock_settings")); 186 } 187 return mLockSettingsService; 188 } 189 190 public int getRequestedMinimumPasswordLength() { 191 return getDevicePolicyManager().getPasswordMinimumLength(null, getCurrentOrCallingUserId()); 192 } 193 194 /** 195 * Gets the device policy password mode. If the mode is non-specific, returns 196 * MODE_PATTERN which allows the user to choose anything. 197 */ 198 public int getRequestedPasswordQuality() { 199 return getDevicePolicyManager().getPasswordQuality(null, getCurrentOrCallingUserId()); 200 } 201 202 public int getRequestedPasswordHistoryLength() { 203 return getDevicePolicyManager().getPasswordHistoryLength(null, getCurrentOrCallingUserId()); 204 } 205 206 public int getRequestedPasswordMinimumLetters() { 207 return getDevicePolicyManager().getPasswordMinimumLetters(null, 208 getCurrentOrCallingUserId()); 209 } 210 211 public int getRequestedPasswordMinimumUpperCase() { 212 return getDevicePolicyManager().getPasswordMinimumUpperCase(null, 213 getCurrentOrCallingUserId()); 214 } 215 216 public int getRequestedPasswordMinimumLowerCase() { 217 return getDevicePolicyManager().getPasswordMinimumLowerCase(null, 218 getCurrentOrCallingUserId()); 219 } 220 221 public int getRequestedPasswordMinimumNumeric() { 222 return getDevicePolicyManager().getPasswordMinimumNumeric(null, 223 getCurrentOrCallingUserId()); 224 } 225 226 public int getRequestedPasswordMinimumSymbols() { 227 return getDevicePolicyManager().getPasswordMinimumSymbols(null, 228 getCurrentOrCallingUserId()); 229 } 230 231 public int getRequestedPasswordMinimumNonLetter() { 232 return getDevicePolicyManager().getPasswordMinimumNonLetter(null, 233 getCurrentOrCallingUserId()); 234 } 235 236 /** 237 * Returns the actual password mode, as set by keyguard after updating the password. 238 * 239 * @return 240 */ 241 public void reportFailedPasswordAttempt() { 242 getDevicePolicyManager().reportFailedPasswordAttempt(getCurrentOrCallingUserId()); 243 } 244 245 public void reportSuccessfulPasswordAttempt() { 246 getDevicePolicyManager().reportSuccessfulPasswordAttempt(getCurrentOrCallingUserId()); 247 } 248 249 public void setCurrentUser(int userId) { 250 sCurrentUserId = userId; 251 } 252 253 public int getCurrentUser() { 254 if (sCurrentUserId != UserHandle.USER_NULL) { 255 // Someone is regularly updating using setCurrentUser() use that value. 256 return sCurrentUserId; 257 } 258 try { 259 return ActivityManagerNative.getDefault().getCurrentUser().id; 260 } catch (RemoteException re) { 261 return UserHandle.USER_OWNER; 262 } 263 } 264 265 public void removeUser(int userId) { 266 try { 267 getLockSettings().removeUser(userId); 268 } catch (RemoteException re) { 269 Log.e(TAG, "Couldn't remove lock settings for user " + userId); 270 } 271 } 272 273 private int getCurrentOrCallingUserId() { 274 int callingUid = Binder.getCallingUid(); 275 if (callingUid == android.os.Process.SYSTEM_UID) { 276 // TODO: This is a little inefficient. See if all users of this are able to 277 // handle USER_CURRENT and pass that instead. 278 return getCurrentUser(); 279 } else { 280 return UserHandle.getUserId(callingUid); 281 } 282 } 283 284 /** 285 * Check to see if a pattern matches the saved pattern. If no pattern exists, 286 * always returns true. 287 * @param pattern The pattern to check. 288 * @return Whether the pattern matches the stored one. 289 */ 290 public boolean checkPattern(List<LockPatternView.Cell> pattern) { 291 final int userId = getCurrentOrCallingUserId(); 292 try { 293 final boolean matched = getLockSettings().checkPattern(patternToHash(pattern), userId); 294 if (matched && (userId == UserHandle.USER_OWNER)) { 295 KeyStore.getInstance().password(patternToString(pattern)); 296 } 297 return matched; 298 } catch (RemoteException re) { 299 return true; 300 } 301 } 302 303 /** 304 * Check to see if a password matches the saved password. If no password exists, 305 * always returns true. 306 * @param password The password to check. 307 * @return Whether the password matches the stored one. 308 */ 309 public boolean checkPassword(String password) { 310 final int userId = getCurrentOrCallingUserId(); 311 try { 312 final boolean matched = getLockSettings().checkPassword(passwordToHash(password), 313 userId); 314 if (matched && (userId == UserHandle.USER_OWNER)) { 315 KeyStore.getInstance().password(password); 316 } 317 return matched; 318 } catch (RemoteException re) { 319 return true; 320 } 321 } 322 323 /** 324 * Check to see if a password matches any of the passwords stored in the 325 * password history. 326 * 327 * @param password The password to check. 328 * @return Whether the password matches any in the history. 329 */ 330 public boolean checkPasswordHistory(String password) { 331 String passwordHashString = new String(passwordToHash(password)); 332 String passwordHistory = getString(PASSWORD_HISTORY_KEY); 333 if (passwordHistory == null) { 334 return false; 335 } 336 // Password History may be too long... 337 int passwordHashLength = passwordHashString.length(); 338 int passwordHistoryLength = getRequestedPasswordHistoryLength(); 339 if(passwordHistoryLength == 0) { 340 return false; 341 } 342 int neededPasswordHistoryLength = passwordHashLength * passwordHistoryLength 343 + passwordHistoryLength - 1; 344 if (passwordHistory.length() > neededPasswordHistoryLength) { 345 passwordHistory = passwordHistory.substring(0, neededPasswordHistoryLength); 346 } 347 return passwordHistory.contains(passwordHashString); 348 } 349 350 /** 351 * Check to see if the user has stored a lock pattern. 352 * @return Whether a saved pattern exists. 353 */ 354 public boolean savedPatternExists() { 355 try { 356 return getLockSettings().havePattern(getCurrentOrCallingUserId()); 357 } catch (RemoteException re) { 358 return false; 359 } 360 } 361 362 /** 363 * Check to see if the user has stored a lock pattern. 364 * @return Whether a saved pattern exists. 365 */ 366 public boolean savedPasswordExists() { 367 try { 368 return getLockSettings().havePassword(getCurrentOrCallingUserId()); 369 } catch (RemoteException re) { 370 return false; 371 } 372 } 373 374 /** 375 * Return true if the user has ever chosen a pattern. This is true even if the pattern is 376 * currently cleared. 377 * 378 * @return True if the user has ever chosen a pattern. 379 */ 380 public boolean isPatternEverChosen() { 381 return getBoolean(PATTERN_EVER_CHOSEN_KEY, false); 382 } 383 384 /** 385 * Return true if the user has ever chosen biometric weak. This is true even if biometric 386 * weak is not current set. 387 * 388 * @return True if the user has ever chosen biometric weak. 389 */ 390 public boolean isBiometricWeakEverChosen() { 391 return getBoolean(BIOMETRIC_WEAK_EVER_CHOSEN_KEY, false); 392 } 393 394 /** 395 * Used by device policy manager to validate the current password 396 * information it has. 397 */ 398 public int getActivePasswordQuality() { 399 int activePasswordQuality = DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED; 400 // Note we don't want to use getKeyguardStoredPasswordQuality() because we want this to 401 // return biometric_weak if that is being used instead of the backup 402 int quality = 403 (int) getLong(PASSWORD_TYPE_KEY, DevicePolicyManager.PASSWORD_QUALITY_SOMETHING); 404 switch (quality) { 405 case DevicePolicyManager.PASSWORD_QUALITY_SOMETHING: 406 if (isLockPatternEnabled()) { 407 activePasswordQuality = DevicePolicyManager.PASSWORD_QUALITY_SOMETHING; 408 } 409 break; 410 case DevicePolicyManager.PASSWORD_QUALITY_BIOMETRIC_WEAK: 411 if (isBiometricWeakInstalled()) { 412 activePasswordQuality = DevicePolicyManager.PASSWORD_QUALITY_BIOMETRIC_WEAK; 413 } 414 break; 415 case DevicePolicyManager.PASSWORD_QUALITY_NUMERIC: 416 if (isLockPasswordEnabled()) { 417 activePasswordQuality = DevicePolicyManager.PASSWORD_QUALITY_NUMERIC; 418 } 419 break; 420 case DevicePolicyManager.PASSWORD_QUALITY_ALPHABETIC: 421 if (isLockPasswordEnabled()) { 422 activePasswordQuality = DevicePolicyManager.PASSWORD_QUALITY_ALPHABETIC; 423 } 424 break; 425 case DevicePolicyManager.PASSWORD_QUALITY_ALPHANUMERIC: 426 if (isLockPasswordEnabled()) { 427 activePasswordQuality = DevicePolicyManager.PASSWORD_QUALITY_ALPHANUMERIC; 428 } 429 break; 430 case DevicePolicyManager.PASSWORD_QUALITY_COMPLEX: 431 if (isLockPasswordEnabled()) { 432 activePasswordQuality = DevicePolicyManager.PASSWORD_QUALITY_COMPLEX; 433 } 434 break; 435 } 436 437 return activePasswordQuality; 438 } 439 440 /** 441 * Clear any lock pattern or password. 442 */ 443 public void clearLock(boolean isFallback) { 444 if(!isFallback) deleteGallery(); 445 saveLockPassword(null, DevicePolicyManager.PASSWORD_QUALITY_SOMETHING); 446 setLockPatternEnabled(false); 447 saveLockPattern(null); 448 setLong(PASSWORD_TYPE_KEY, DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED); 449 setLong(PASSWORD_TYPE_ALTERNATE_KEY, DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED); 450 } 451 452 /** 453 * Disable showing lock screen at all when the DevicePolicyManager allows it. 454 * This is only meaningful if pattern, pin or password are not set. 455 * 456 * @param disable Disables lock screen when true 457 */ 458 public void setLockScreenDisabled(boolean disable) { 459 setLong(DISABLE_LOCKSCREEN_KEY, disable ? 1 : 0); 460 } 461 462 /** 463 * Determine if LockScreen can be disabled. This is used, for example, to tell if we should 464 * show LockScreen or go straight to the home screen. 465 * 466 * @return true if lock screen is can be disabled 467 */ 468 public boolean isLockScreenDisabled() { 469 return !isSecure() && getLong(DISABLE_LOCKSCREEN_KEY, 0) != 0; 470 } 471 472 /** 473 * Calls back SetupFaceLock to delete the temporary gallery file 474 */ 475 public void deleteTempGallery() { 476 Intent intent = new Intent().setAction("com.android.facelock.DELETE_GALLERY"); 477 intent.putExtra("deleteTempGallery", true); 478 mContext.sendBroadcast(intent); 479 } 480 481 /** 482 * Calls back SetupFaceLock to delete the gallery file when the lock type is changed 483 */ 484 void deleteGallery() { 485 if(usingBiometricWeak()) { 486 Intent intent = new Intent().setAction("com.android.facelock.DELETE_GALLERY"); 487 intent.putExtra("deleteGallery", true); 488 mContext.sendBroadcast(intent); 489 } 490 } 491 492 /** 493 * Save a lock pattern. 494 * @param pattern The new pattern to save. 495 */ 496 public void saveLockPattern(List<LockPatternView.Cell> pattern) { 497 this.saveLockPattern(pattern, false); 498 } 499 500 /** 501 * Save a lock pattern. 502 * @param pattern The new pattern to save. 503 * @param isFallback Specifies if this is a fallback to biometric weak 504 */ 505 public void saveLockPattern(List<LockPatternView.Cell> pattern, boolean isFallback) { 506 // Compute the hash 507 final byte[] hash = LockPatternUtils.patternToHash(pattern); 508 try { 509 getLockSettings().setLockPattern(hash, getCurrentOrCallingUserId()); 510 DevicePolicyManager dpm = getDevicePolicyManager(); 511 KeyStore keyStore = KeyStore.getInstance(); 512 if (pattern != null) { 513 keyStore.password(patternToString(pattern)); 514 setBoolean(PATTERN_EVER_CHOSEN_KEY, true); 515 if (!isFallback) { 516 deleteGallery(); 517 setLong(PASSWORD_TYPE_KEY, DevicePolicyManager.PASSWORD_QUALITY_SOMETHING); 518 dpm.setActivePasswordState(DevicePolicyManager.PASSWORD_QUALITY_SOMETHING, 519 pattern.size(), 0, 0, 0, 0, 0, 0, getCurrentOrCallingUserId()); 520 } else { 521 setLong(PASSWORD_TYPE_KEY, DevicePolicyManager.PASSWORD_QUALITY_BIOMETRIC_WEAK); 522 setLong(PASSWORD_TYPE_ALTERNATE_KEY, 523 DevicePolicyManager.PASSWORD_QUALITY_SOMETHING); 524 finishBiometricWeak(); 525 dpm.setActivePasswordState(DevicePolicyManager.PASSWORD_QUALITY_BIOMETRIC_WEAK, 526 0, 0, 0, 0, 0, 0, 0, getCurrentOrCallingUserId()); 527 } 528 } else { 529 if (keyStore.isEmpty()) { 530 keyStore.reset(); 531 } 532 dpm.setActivePasswordState(DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED, 0, 0, 533 0, 0, 0, 0, 0, getCurrentOrCallingUserId()); 534 } 535 } catch (RemoteException re) { 536 Log.e(TAG, "Couldn't save lock pattern " + re); 537 } 538 } 539 540 /** 541 * Compute the password quality from the given password string. 542 */ 543 static public int computePasswordQuality(String password) { 544 boolean hasDigit = false; 545 boolean hasNonDigit = false; 546 final int len = password.length(); 547 for (int i = 0; i < len; i++) { 548 if (Character.isDigit(password.charAt(i))) { 549 hasDigit = true; 550 } else { 551 hasNonDigit = true; 552 } 553 } 554 555 if (hasNonDigit && hasDigit) { 556 return DevicePolicyManager.PASSWORD_QUALITY_ALPHANUMERIC; 557 } 558 if (hasNonDigit) { 559 return DevicePolicyManager.PASSWORD_QUALITY_ALPHABETIC; 560 } 561 if (hasDigit) { 562 return DevicePolicyManager.PASSWORD_QUALITY_NUMERIC; 563 } 564 return DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED; 565 } 566 567 /** Update the encryption password if it is enabled **/ 568 private void updateEncryptionPassword(String password) { 569 DevicePolicyManager dpm = getDevicePolicyManager(); 570 if (dpm.getStorageEncryptionStatus(getCurrentOrCallingUserId()) 571 != DevicePolicyManager.ENCRYPTION_STATUS_ACTIVE) { 572 return; 573 } 574 575 IBinder service = ServiceManager.getService("mount"); 576 if (service == null) { 577 Log.e(TAG, "Could not find the mount service to update the encryption password"); 578 return; 579 } 580 581 IMountService mountService = IMountService.Stub.asInterface(service); 582 try { 583 mountService.changeEncryptionPassword(password); 584 } catch (RemoteException e) { 585 Log.e(TAG, "Error changing encryption password", e); 586 } 587 } 588 589 /** 590 * Save a lock password. Does not ensure that the password is as good 591 * as the requested mode, but will adjust the mode to be as good as the 592 * pattern. 593 * @param password The password to save 594 * @param quality {@see DevicePolicyManager#getPasswordQuality(android.content.ComponentName)} 595 */ 596 public void saveLockPassword(String password, int quality) { 597 this.saveLockPassword(password, quality, false, getCurrentOrCallingUserId()); 598 } 599 600 /** 601 * Save a lock password. Does not ensure that the password is as good 602 * as the requested mode, but will adjust the mode to be as good as the 603 * pattern. 604 * @param password The password to save 605 * @param quality {@see DevicePolicyManager#getPasswordQuality(android.content.ComponentName)} 606 * @param isFallback Specifies if this is a fallback to biometric weak 607 */ 608 public void saveLockPassword(String password, int quality, boolean isFallback) { 609 saveLockPassword(password, quality, isFallback, getCurrentOrCallingUserId()); 610 } 611 612 /** 613 * Save a lock password. Does not ensure that the password is as good 614 * as the requested mode, but will adjust the mode to be as good as the 615 * pattern. 616 * @param password The password to save 617 * @param quality {@see DevicePolicyManager#getPasswordQuality(android.content.ComponentName)} 618 * @param isFallback Specifies if this is a fallback to biometric weak 619 * @param userHandle The userId of the user to change the password for 620 */ 621 public void saveLockPassword(String password, int quality, boolean isFallback, int userHandle) { 622 // Compute the hash 623 final byte[] hash = passwordToHash(password); 624 try { 625 getLockSettings().setLockPassword(hash, userHandle); 626 DevicePolicyManager dpm = getDevicePolicyManager(); 627 KeyStore keyStore = KeyStore.getInstance(); 628 if (password != null) { 629 if (userHandle == UserHandle.USER_OWNER) { 630 // Update the encryption password. 631 updateEncryptionPassword(password); 632 633 // Update the keystore password 634 keyStore.password(password); 635 } 636 637 int computedQuality = computePasswordQuality(password); 638 if (!isFallback) { 639 deleteGallery(); 640 setLong(PASSWORD_TYPE_KEY, Math.max(quality, computedQuality), userHandle); 641 if (computedQuality != DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED) { 642 int letters = 0; 643 int uppercase = 0; 644 int lowercase = 0; 645 int numbers = 0; 646 int symbols = 0; 647 int nonletter = 0; 648 for (int i = 0; i < password.length(); i++) { 649 char c = password.charAt(i); 650 if (c >= 'A' && c <= 'Z') { 651 letters++; 652 uppercase++; 653 } else if (c >= 'a' && c <= 'z') { 654 letters++; 655 lowercase++; 656 } else if (c >= '0' && c <= '9') { 657 numbers++; 658 nonletter++; 659 } else { 660 symbols++; 661 nonletter++; 662 } 663 } 664 dpm.setActivePasswordState(Math.max(quality, computedQuality), 665 password.length(), letters, uppercase, lowercase, 666 numbers, symbols, nonletter, userHandle); 667 } else { 668 // The password is not anything. 669 dpm.setActivePasswordState( 670 DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED, 671 0, 0, 0, 0, 0, 0, 0, userHandle); 672 } 673 } else { 674 // Case where it's a fallback for biometric weak 675 setLong(PASSWORD_TYPE_KEY, DevicePolicyManager.PASSWORD_QUALITY_BIOMETRIC_WEAK, 676 userHandle); 677 setLong(PASSWORD_TYPE_ALTERNATE_KEY, Math.max(quality, computedQuality), 678 userHandle); 679 finishBiometricWeak(); 680 dpm.setActivePasswordState(DevicePolicyManager.PASSWORD_QUALITY_BIOMETRIC_WEAK, 681 0, 0, 0, 0, 0, 0, 0, userHandle); 682 } 683 // Add the password to the password history. We assume all 684 // password 685 // hashes have the same length for simplicity of implementation. 686 String passwordHistory = getString(PASSWORD_HISTORY_KEY, userHandle); 687 if (passwordHistory == null) { 688 passwordHistory = new String(); 689 } 690 int passwordHistoryLength = getRequestedPasswordHistoryLength(); 691 if (passwordHistoryLength == 0) { 692 passwordHistory = ""; 693 } else { 694 passwordHistory = new String(hash) + "," + passwordHistory; 695 // Cut it to contain passwordHistoryLength hashes 696 // and passwordHistoryLength -1 commas. 697 passwordHistory = passwordHistory.substring(0, Math.min(hash.length 698 * passwordHistoryLength + passwordHistoryLength - 1, passwordHistory 699 .length())); 700 } 701 setString(PASSWORD_HISTORY_KEY, passwordHistory, userHandle); 702 } else { 703 // Conditionally reset the keystore if empty. If 704 // non-empty, we are just switching key guard type 705 if (keyStore.isEmpty()) { 706 keyStore.reset(); 707 } 708 dpm.setActivePasswordState( 709 DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED, 0, 0, 0, 0, 0, 0, 0, 710 userHandle); 711 } 712 } catch (RemoteException re) { 713 // Cant do much 714 Log.e(TAG, "Unable to save lock password " + re); 715 } 716 } 717 718 /** 719 * Retrieves the quality mode we're in. 720 * {@see DevicePolicyManager#getPasswordQuality(android.content.ComponentName)} 721 * 722 * @return stored password quality 723 */ 724 public int getKeyguardStoredPasswordQuality() { 725 int quality = 726 (int) getLong(PASSWORD_TYPE_KEY, DevicePolicyManager.PASSWORD_QUALITY_SOMETHING); 727 // If the user has chosen to use weak biometric sensor, then return the backup locking 728 // method and treat biometric as a special case. 729 if (quality == DevicePolicyManager.PASSWORD_QUALITY_BIOMETRIC_WEAK) { 730 quality = 731 (int) getLong(PASSWORD_TYPE_ALTERNATE_KEY, 732 DevicePolicyManager.PASSWORD_QUALITY_SOMETHING); 733 } 734 return quality; 735 } 736 737 /** 738 * @return true if the lockscreen method is set to biometric weak 739 */ 740 public boolean usingBiometricWeak() { 741 int quality = 742 (int) getLong(PASSWORD_TYPE_KEY, DevicePolicyManager.PASSWORD_QUALITY_SOMETHING); 743 return quality == DevicePolicyManager.PASSWORD_QUALITY_BIOMETRIC_WEAK; 744 } 745 746 /** 747 * Deserialize a pattern. 748 * @param string The pattern serialized with {@link #patternToString} 749 * @return The pattern. 750 */ 751 public static List<LockPatternView.Cell> stringToPattern(String string) { 752 List<LockPatternView.Cell> result = Lists.newArrayList(); 753 754 final byte[] bytes = string.getBytes(); 755 for (int i = 0; i < bytes.length; i++) { 756 byte b = bytes[i]; 757 result.add(LockPatternView.Cell.of(b / 3, b % 3)); 758 } 759 return result; 760 } 761 762 /** 763 * Serialize a pattern. 764 * @param pattern The pattern. 765 * @return The pattern in string form. 766 */ 767 public static String patternToString(List<LockPatternView.Cell> pattern) { 768 if (pattern == null) { 769 return ""; 770 } 771 final int patternSize = pattern.size(); 772 773 byte[] res = new byte[patternSize]; 774 for (int i = 0; i < patternSize; i++) { 775 LockPatternView.Cell cell = pattern.get(i); 776 res[i] = (byte) (cell.getRow() * 3 + cell.getColumn()); 777 } 778 return new String(res); 779 } 780 781 /* 782 * Generate an SHA-1 hash for the pattern. Not the most secure, but it is 783 * at least a second level of protection. First level is that the file 784 * is in a location only readable by the system process. 785 * @param pattern the gesture pattern. 786 * @return the hash of the pattern in a byte array. 787 */ 788 private static byte[] patternToHash(List<LockPatternView.Cell> pattern) { 789 if (pattern == null) { 790 return null; 791 } 792 793 final int patternSize = pattern.size(); 794 byte[] res = new byte[patternSize]; 795 for (int i = 0; i < patternSize; i++) { 796 LockPatternView.Cell cell = pattern.get(i); 797 res[i] = (byte) (cell.getRow() * 3 + cell.getColumn()); 798 } 799 try { 800 MessageDigest md = MessageDigest.getInstance("SHA-1"); 801 byte[] hash = md.digest(res); 802 return hash; 803 } catch (NoSuchAlgorithmException nsa) { 804 return res; 805 } 806 } 807 808 private String getSalt() { 809 long salt = getLong(LOCK_PASSWORD_SALT_KEY, 0); 810 if (salt == 0) { 811 try { 812 salt = SecureRandom.getInstance("SHA1PRNG").nextLong(); 813 setLong(LOCK_PASSWORD_SALT_KEY, salt); 814 Log.v(TAG, "Initialized lock password salt"); 815 } catch (NoSuchAlgorithmException e) { 816 // Throw an exception rather than storing a password we'll never be able to recover 817 throw new IllegalStateException("Couldn't get SecureRandom number", e); 818 } 819 } 820 return Long.toHexString(salt); 821 } 822 823 /* 824 * Generate a hash for the given password. To avoid brute force attacks, we use a salted hash. 825 * Not the most secure, but it is at least a second level of protection. First level is that 826 * the file is in a location only readable by the system process. 827 * @param password the gesture pattern. 828 * @return the hash of the pattern in a byte array. 829 */ 830 public byte[] passwordToHash(String password) { 831 if (password == null) { 832 return null; 833 } 834 String algo = null; 835 byte[] hashed = null; 836 try { 837 byte[] saltedPassword = (password + getSalt()).getBytes(); 838 byte[] sha1 = MessageDigest.getInstance(algo = "SHA-1").digest(saltedPassword); 839 byte[] md5 = MessageDigest.getInstance(algo = "MD5").digest(saltedPassword); 840 hashed = (toHex(sha1) + toHex(md5)).getBytes(); 841 } catch (NoSuchAlgorithmException e) { 842 Log.w(TAG, "Failed to encode string because of missing algorithm: " + algo); 843 } 844 return hashed; 845 } 846 847 private static String toHex(byte[] ary) { 848 final String hex = "0123456789ABCDEF"; 849 String ret = ""; 850 for (int i = 0; i < ary.length; i++) { 851 ret += hex.charAt((ary[i] >> 4) & 0xf); 852 ret += hex.charAt(ary[i] & 0xf); 853 } 854 return ret; 855 } 856 857 /** 858 * @return Whether the lock password is enabled, or if it is set as a backup for biometric weak 859 */ 860 public boolean isLockPasswordEnabled() { 861 long mode = getLong(PASSWORD_TYPE_KEY, 0); 862 long backupMode = getLong(PASSWORD_TYPE_ALTERNATE_KEY, 0); 863 final boolean passwordEnabled = mode == DevicePolicyManager.PASSWORD_QUALITY_ALPHABETIC 864 || mode == DevicePolicyManager.PASSWORD_QUALITY_NUMERIC 865 || mode == DevicePolicyManager.PASSWORD_QUALITY_ALPHANUMERIC 866 || mode == DevicePolicyManager.PASSWORD_QUALITY_COMPLEX; 867 final boolean backupEnabled = backupMode == DevicePolicyManager.PASSWORD_QUALITY_ALPHABETIC 868 || backupMode == DevicePolicyManager.PASSWORD_QUALITY_NUMERIC 869 || backupMode == DevicePolicyManager.PASSWORD_QUALITY_ALPHANUMERIC 870 || backupMode == DevicePolicyManager.PASSWORD_QUALITY_COMPLEX; 871 872 return savedPasswordExists() && (passwordEnabled || 873 (usingBiometricWeak() && backupEnabled)); 874 } 875 876 /** 877 * @return Whether the lock pattern is enabled, or if it is set as a backup for biometric weak 878 */ 879 public boolean isLockPatternEnabled() { 880 final boolean backupEnabled = 881 getLong(PASSWORD_TYPE_ALTERNATE_KEY, DevicePolicyManager.PASSWORD_QUALITY_SOMETHING) 882 == DevicePolicyManager.PASSWORD_QUALITY_SOMETHING; 883 884 return getBoolean(Settings.Secure.LOCK_PATTERN_ENABLED, false) 885 && (getLong(PASSWORD_TYPE_KEY, DevicePolicyManager.PASSWORD_QUALITY_SOMETHING) 886 == DevicePolicyManager.PASSWORD_QUALITY_SOMETHING || 887 (usingBiometricWeak() && backupEnabled)); 888 } 889 890 /** 891 * @return Whether biometric weak lock is installed and that the front facing camera exists 892 */ 893 public boolean isBiometricWeakInstalled() { 894 // Check that it's installed 895 PackageManager pm = mContext.getPackageManager(); 896 try { 897 pm.getPackageInfo("com.android.facelock", PackageManager.GET_ACTIVITIES); 898 } catch (PackageManager.NameNotFoundException e) { 899 return false; 900 } 901 902 // Check that the camera is enabled 903 if (!pm.hasSystemFeature(PackageManager.FEATURE_CAMERA_FRONT)) { 904 return false; 905 } 906 if (getDevicePolicyManager().getCameraDisabled(null, getCurrentOrCallingUserId())) { 907 return false; 908 } 909 910 911 return true; 912 } 913 914 /** 915 * Set whether biometric weak liveliness is enabled. 916 */ 917 public void setBiometricWeakLivelinessEnabled(boolean enabled) { 918 long currentFlag = getLong(Settings.Secure.LOCK_BIOMETRIC_WEAK_FLAGS, 0L); 919 long newFlag; 920 if (enabled) { 921 newFlag = currentFlag | FLAG_BIOMETRIC_WEAK_LIVELINESS; 922 } else { 923 newFlag = currentFlag & ~FLAG_BIOMETRIC_WEAK_LIVELINESS; 924 } 925 setLong(Settings.Secure.LOCK_BIOMETRIC_WEAK_FLAGS, newFlag); 926 } 927 928 /** 929 * @return Whether the biometric weak liveliness is enabled. 930 */ 931 public boolean isBiometricWeakLivelinessEnabled() { 932 long currentFlag = getLong(Settings.Secure.LOCK_BIOMETRIC_WEAK_FLAGS, 0L); 933 return ((currentFlag & FLAG_BIOMETRIC_WEAK_LIVELINESS) != 0); 934 } 935 936 /** 937 * Set whether the lock pattern is enabled. 938 */ 939 public void setLockPatternEnabled(boolean enabled) { 940 setBoolean(Settings.Secure.LOCK_PATTERN_ENABLED, enabled); 941 } 942 943 /** 944 * @return Whether the visible pattern is enabled. 945 */ 946 public boolean isVisiblePatternEnabled() { 947 return getBoolean(Settings.Secure.LOCK_PATTERN_VISIBLE, false); 948 } 949 950 /** 951 * Set whether the visible pattern is enabled. 952 */ 953 public void setVisiblePatternEnabled(boolean enabled) { 954 setBoolean(Settings.Secure.LOCK_PATTERN_VISIBLE, enabled); 955 } 956 957 /** 958 * @return Whether tactile feedback for the pattern is enabled. 959 */ 960 public boolean isTactileFeedbackEnabled() { 961 return Settings.System.getIntForUser(mContentResolver, 962 Settings.System.HAPTIC_FEEDBACK_ENABLED, 1, UserHandle.USER_CURRENT) != 0; 963 } 964 965 /** 966 * Set and store the lockout deadline, meaning the user can't attempt his/her unlock 967 * pattern until the deadline has passed. 968 * @return the chosen deadline. 969 */ 970 public long setLockoutAttemptDeadline() { 971 final long deadline = SystemClock.elapsedRealtime() + FAILED_ATTEMPT_TIMEOUT_MS; 972 setLong(LOCKOUT_ATTEMPT_DEADLINE, deadline); 973 return deadline; 974 } 975 976 /** 977 * @return The elapsed time in millis in the future when the user is allowed to 978 * attempt to enter his/her lock pattern, or 0 if the user is welcome to 979 * enter a pattern. 980 */ 981 public long getLockoutAttemptDeadline() { 982 final long deadline = getLong(LOCKOUT_ATTEMPT_DEADLINE, 0L); 983 final long now = SystemClock.elapsedRealtime(); 984 if (deadline < now || deadline > (now + FAILED_ATTEMPT_TIMEOUT_MS)) { 985 return 0L; 986 } 987 return deadline; 988 } 989 990 /** 991 * @return Whether the user is permanently locked out until they verify their 992 * credentials. Occurs after {@link #FAILED_ATTEMPTS_BEFORE_RESET} failed 993 * attempts. 994 */ 995 public boolean isPermanentlyLocked() { 996 return getBoolean(LOCKOUT_PERMANENT_KEY, false); 997 } 998 999 /** 1000 * Set the state of whether the device is permanently locked, meaning the user 1001 * must authenticate via other means. 1002 * 1003 * @param locked Whether the user is permanently locked out until they verify their 1004 * credentials. Occurs after {@link #FAILED_ATTEMPTS_BEFORE_RESET} failed 1005 * attempts. 1006 */ 1007 public void setPermanentlyLocked(boolean locked) { 1008 setBoolean(LOCKOUT_PERMANENT_KEY, locked); 1009 } 1010 1011 public boolean isEmergencyCallCapable() { 1012 return mContext.getResources().getBoolean( 1013 com.android.internal.R.bool.config_voice_capable); 1014 } 1015 1016 public boolean isPukUnlockScreenEnable() { 1017 return mContext.getResources().getBoolean( 1018 com.android.internal.R.bool.config_enable_puk_unlock_screen); 1019 } 1020 1021 public boolean isEmergencyCallEnabledWhileSimLocked() { 1022 return mContext.getResources().getBoolean( 1023 com.android.internal.R.bool.config_enable_emergency_call_while_sim_locked); 1024 } 1025 1026 /** 1027 * @return A formatted string of the next alarm (for showing on the lock screen), 1028 * or null if there is no next alarm. 1029 */ 1030 public String getNextAlarm() { 1031 String nextAlarm = Settings.System.getStringForUser(mContentResolver, 1032 Settings.System.NEXT_ALARM_FORMATTED, UserHandle.USER_CURRENT); 1033 if (nextAlarm == null || TextUtils.isEmpty(nextAlarm)) { 1034 return null; 1035 } 1036 return nextAlarm; 1037 } 1038 1039 private boolean getBoolean(String secureSettingKey, boolean defaultValue) { 1040 try { 1041 return getLockSettings().getBoolean(secureSettingKey, defaultValue, 1042 getCurrentOrCallingUserId()); 1043 } catch (RemoteException re) { 1044 return defaultValue; 1045 } 1046 } 1047 1048 private void setBoolean(String secureSettingKey, boolean enabled) { 1049 try { 1050 getLockSettings().setBoolean(secureSettingKey, enabled, getCurrentOrCallingUserId()); 1051 } catch (RemoteException re) { 1052 // What can we do? 1053 Log.e(TAG, "Couldn't write boolean " + secureSettingKey + re); 1054 } 1055 } 1056 1057 public int[] getAppWidgets() { 1058 String appWidgetIdString = Settings.Secure.getStringForUser( 1059 mContentResolver, Settings.Secure.LOCK_SCREEN_APPWIDGET_IDS, 1060 UserHandle.USER_CURRENT); 1061 String delims = ","; 1062 if (appWidgetIdString != null && appWidgetIdString.length() > 0) { 1063 String[] appWidgetStringIds = appWidgetIdString.split(delims); 1064 int[] appWidgetIds = new int[appWidgetStringIds.length]; 1065 for (int i = 0; i < appWidgetStringIds.length; i++) { 1066 String appWidget = appWidgetStringIds[i]; 1067 try { 1068 appWidgetIds[i] = Integer.decode(appWidget); 1069 } catch (NumberFormatException e) { 1070 Log.d(TAG, "Error when parsing widget id " + appWidget); 1071 return null; 1072 } 1073 } 1074 return appWidgetIds; 1075 } 1076 if (appWidgetIdString == null) { 1077 return new int[] { LockPatternUtils.ID_DEFAULT_STATUS_WIDGET }; 1078 } else { 1079 return new int[0]; 1080 } 1081 } 1082 1083 private static String combineStrings(int[] list, String separator) { 1084 int listLength = list.length; 1085 1086 switch (listLength) { 1087 case 0: { 1088 return ""; 1089 } 1090 case 1: { 1091 return Integer.toString(list[0]); 1092 } 1093 } 1094 1095 int strLength = 0; 1096 int separatorLength = separator.length(); 1097 1098 String[] stringList = new String[list.length]; 1099 for (int i = 0; i < listLength; i++) { 1100 stringList[i] = Integer.toString(list[i]); 1101 strLength += stringList[i].length(); 1102 if (i < listLength - 1) { 1103 strLength += separatorLength; 1104 } 1105 } 1106 1107 StringBuilder sb = new StringBuilder(strLength); 1108 1109 for (int i = 0; i < listLength; i++) { 1110 sb.append(list[i]); 1111 if (i < listLength - 1) { 1112 sb.append(separator); 1113 } 1114 } 1115 1116 return sb.toString(); 1117 } 1118 1119 private void writeAppWidgets(int[] appWidgetIds) { 1120 Settings.Secure.putStringForUser(mContentResolver, 1121 Settings.Secure.LOCK_SCREEN_APPWIDGET_IDS, 1122 combineStrings(appWidgetIds, ","), 1123 UserHandle.USER_CURRENT); 1124 } 1125 1126 // TODO: log an error if this returns false 1127 public boolean addAppWidget(int widgetId, int index) { 1128 int[] widgets = getAppWidgets(); 1129 if (widgets == null) { 1130 return false; 1131 } 1132 if (index < 0 || index > widgets.length) { 1133 return false; 1134 } 1135 int[] newWidgets = new int[widgets.length + 1]; 1136 for (int i = 0, j = 0; i < newWidgets.length; i++) { 1137 if (index == i) { 1138 newWidgets[i] = widgetId; 1139 i++; 1140 } 1141 if (i < newWidgets.length) { 1142 newWidgets[i] = widgets[j]; 1143 j++; 1144 } 1145 } 1146 writeAppWidgets(newWidgets); 1147 return true; 1148 } 1149 1150 public boolean removeAppWidget(int widgetId) { 1151 int[] widgets = getAppWidgets(); 1152 1153 int[] newWidgets = new int[widgets.length - 1]; 1154 for (int i = 0, j = 0; i < widgets.length; i++) { 1155 if (widgets[i] == widgetId) { 1156 // continue... 1157 } else if (j >= newWidgets.length) { 1158 // we couldn't find the widget 1159 return false; 1160 } else { 1161 newWidgets[j] = widgets[i]; 1162 j++; 1163 } 1164 } 1165 writeAppWidgets(newWidgets); 1166 return true; 1167 } 1168 1169 public int getStickyAppWidgetIndex() { 1170 return Settings.Secure.getIntForUser( 1171 mContentResolver, 1172 Settings.Secure.LOCK_SCREEN_STICKY_APPWIDGET, 1173 -1, 1174 UserHandle.USER_CURRENT); 1175 } 1176 1177 public void setStickyAppWidgetIndex(int value) { 1178 Settings.Secure.putIntForUser(mContentResolver, 1179 Settings.Secure.LOCK_SCREEN_STICKY_APPWIDGET, 1180 value, 1181 UserHandle.USER_CURRENT); 1182 } 1183 1184 private long getLong(String secureSettingKey, long defaultValue) { 1185 try { 1186 return getLockSettings().getLong(secureSettingKey, defaultValue, 1187 getCurrentOrCallingUserId()); 1188 } catch (RemoteException re) { 1189 return defaultValue; 1190 } 1191 } 1192 1193 private void setLong(String secureSettingKey, long value) { 1194 setLong(secureSettingKey, value, getCurrentOrCallingUserId()); 1195 } 1196 1197 private void setLong(String secureSettingKey, long value, int userHandle) { 1198 try { 1199 getLockSettings().setLong(secureSettingKey, value, getCurrentOrCallingUserId()); 1200 } catch (RemoteException re) { 1201 // What can we do? 1202 Log.e(TAG, "Couldn't write long " + secureSettingKey + re); 1203 } 1204 } 1205 1206 private String getString(String secureSettingKey) { 1207 return getString(secureSettingKey, getCurrentOrCallingUserId()); 1208 } 1209 1210 private String getString(String secureSettingKey, int userHandle) { 1211 try { 1212 return getLockSettings().getString(secureSettingKey, null, userHandle); 1213 } catch (RemoteException re) { 1214 return null; 1215 } 1216 } 1217 1218 private void setString(String secureSettingKey, String value, int userHandle) { 1219 try { 1220 getLockSettings().setString(secureSettingKey, value, userHandle); 1221 } catch (RemoteException re) { 1222 // What can we do? 1223 Log.e(TAG, "Couldn't write string " + secureSettingKey + re); 1224 } 1225 } 1226 1227 public boolean isSecure() { 1228 long mode = getKeyguardStoredPasswordQuality(); 1229 final boolean isPattern = mode == DevicePolicyManager.PASSWORD_QUALITY_SOMETHING; 1230 final boolean isPassword = mode == DevicePolicyManager.PASSWORD_QUALITY_NUMERIC 1231 || mode == DevicePolicyManager.PASSWORD_QUALITY_ALPHABETIC 1232 || mode == DevicePolicyManager.PASSWORD_QUALITY_ALPHANUMERIC 1233 || mode == DevicePolicyManager.PASSWORD_QUALITY_COMPLEX; 1234 final boolean secure = isPattern && isLockPatternEnabled() && savedPatternExists() 1235 || isPassword && savedPasswordExists(); 1236 return secure; 1237 } 1238 1239 /** 1240 * Sets the emergency button visibility based on isEmergencyCallCapable(). 1241 * 1242 * If the emergency button is visible, sets the text on the emergency button 1243 * to indicate what action will be taken. 1244 * 1245 * If there's currently a call in progress, the button will take them to the call 1246 * @param button the button to update 1247 * @param the phone state: 1248 * {@link TelephonyManager#CALL_STATE_IDLE} 1249 * {@link TelephonyManager#CALL_STATE_RINGING} 1250 * {@link TelephonyManager#CALL_STATE_OFFHOOK} 1251 * @param shown indicates whether the given screen wants the emergency button to show at all 1252 * @param button 1253 * @param phoneState 1254 * @param shown shown if true; hidden if false 1255 * @param upperCase if true, converts button label string to upper case 1256 */ 1257 public void updateEmergencyCallButtonState(Button button, int phoneState, boolean shown, 1258 boolean upperCase, boolean showIcon) { 1259 if (isEmergencyCallCapable() && shown) { 1260 button.setVisibility(View.VISIBLE); 1261 } else { 1262 button.setVisibility(View.GONE); 1263 return; 1264 } 1265 1266 int textId; 1267 if (phoneState == TelephonyManager.CALL_STATE_OFFHOOK) { 1268 // show "return to call" text and show phone icon 1269 textId = R.string.lockscreen_return_to_call; 1270 int phoneCallIcon = showIcon ? R.drawable.stat_sys_phone_call : 0; 1271 button.setCompoundDrawablesWithIntrinsicBounds(phoneCallIcon, 0, 0, 0); 1272 } else { 1273 textId = R.string.lockscreen_emergency_call; 1274 int emergencyIcon = showIcon ? R.drawable.ic_emergency : 0; 1275 button.setCompoundDrawablesWithIntrinsicBounds(emergencyIcon, 0, 0, 0); 1276 } 1277 if (upperCase) { 1278 CharSequence original = mContext.getResources().getText(textId); 1279 String upper = original != null ? original.toString().toUpperCase() : null; 1280 button.setText(upper); 1281 } else { 1282 button.setText(textId); 1283 } 1284 } 1285 1286 /** 1287 * @deprecated 1288 * @param button 1289 * @param phoneState 1290 * @param shown 1291 */ 1292 public void updateEmergencyCallButtonState(Button button, int phoneState, boolean shown) { 1293 updateEmergencyCallButtonState(button, phoneState, shown, false, true); 1294 } 1295 1296 /** 1297 * Resumes a call in progress. Typically launched from the EmergencyCall button 1298 * on various lockscreens. 1299 * 1300 * @return true if we were able to tell InCallScreen to show. 1301 */ 1302 public boolean resumeCall() { 1303 ITelephony phone = ITelephony.Stub.asInterface(ServiceManager.checkService("phone")); 1304 try { 1305 if (phone != null && phone.showCallScreen()) { 1306 return true; 1307 } 1308 } catch (RemoteException e) { 1309 // What can we do? 1310 } 1311 return false; 1312 } 1313 1314 private void finishBiometricWeak() { 1315 setBoolean(BIOMETRIC_WEAK_EVER_CHOSEN_KEY, true); 1316 1317 // Launch intent to show final screen, this also 1318 // moves the temporary gallery to the actual gallery 1319 Intent intent = new Intent(); 1320 intent.setClassName("com.android.facelock", 1321 "com.android.facelock.SetupEndScreen"); 1322 mContext.startActivity(intent); 1323 } 1324 1325 public void setPowerButtonInstantlyLocks(boolean enabled) { 1326 setBoolean(LOCKSCREEN_POWER_BUTTON_INSTANTLY_LOCKS, enabled); 1327 } 1328 1329 public boolean getPowerButtonInstantlyLocks() { 1330 return getBoolean(LOCKSCREEN_POWER_BUTTON_INSTANTLY_LOCKS, true); 1331 } 1332 1333} 1334