1 /* Copyright (C) 2011 The Android Open Source Project 2 * 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 package com.android.emailcommon.service; 17 18 import com.android.emailcommon.provider.Policy; 19 20 /** 21 * Legacy class for policy storage as a bit field of flags 22 */ 23 public class LegacyPolicySet { 24 25 // Security (provisioning) flags 26 // bits 0..4: password length (0=no password required) 27 public static final int PASSWORD_LENGTH_MASK = 31; 28 public static final int PASSWORD_LENGTH_SHIFT = 0; 29 public static final int PASSWORD_LENGTH_MAX = 30; 30 // bits 5..8: password mode 31 public static final int PASSWORD_MODE_SHIFT = 5; 32 public static final int PASSWORD_MODE_MASK = 15 << PASSWORD_MODE_SHIFT; 33 public static final int PASSWORD_MODE_NONE = 0 << PASSWORD_MODE_SHIFT; 34 public static final int PASSWORD_MODE_SIMPLE = 1 << PASSWORD_MODE_SHIFT; 35 public static final int PASSWORD_MODE_STRONG = 2 << PASSWORD_MODE_SHIFT; 36 // bits 9..13: password failures -> wipe device (0=disabled) 37 public static final int PASSWORD_MAX_FAILS_SHIFT = 9; 38 public static final int PASSWORD_MAX_FAILS_MASK = 31 << PASSWORD_MAX_FAILS_SHIFT; 39 public static final int PASSWORD_MAX_FAILS_MAX = 31; 40 // bits 14..24: seconds to screen lock (0=not required) 41 public static final int SCREEN_LOCK_TIME_SHIFT = 14; 42 public static final int SCREEN_LOCK_TIME_MASK = 2047 << SCREEN_LOCK_TIME_SHIFT; 43 public static final int SCREEN_LOCK_TIME_MAX = 2047; 44 // bit 25: remote wipe capability required 45 public static final int REQUIRE_REMOTE_WIPE = 1 << 25; 46 // bit 26..35: password expiration (days; 0=not required) 47 public static final int PASSWORD_EXPIRATION_SHIFT = 26; 48 public static final long PASSWORD_EXPIRATION_MASK = 1023L << PASSWORD_EXPIRATION_SHIFT; 49 public static final int PASSWORD_EXPIRATION_MAX = 1023; 50 // bit 36..43: password history (length; 0=not required) 51 public static final int PASSWORD_HISTORY_SHIFT = 36; 52 public static final long PASSWORD_HISTORY_MASK = 255L << PASSWORD_HISTORY_SHIFT; 53 public static final int PASSWORD_HISTORY_MAX = 255; 54 // bit 44..48: min complex characters (0=not required) 55 public static final int PASSWORD_COMPLEX_CHARS_SHIFT = 44; 56 public static final long PASSWORD_COMPLEX_CHARS_MASK = 31L << PASSWORD_COMPLEX_CHARS_SHIFT; 57 public static final int PASSWORD_COMPLEX_CHARS_MAX = 31; 58 // bit 49: requires device encryption (internal) 59 public static final long REQUIRE_ENCRYPTION = 1L << 49; 60 // bit 50: requires external storage encryption 61 public static final long REQUIRE_ENCRYPTION_EXTERNAL = 1L << 50; 62 63 /** 64 * Convert legacy policy flags to a Policy 65 * @param flags legacy policy flags 66 * @return a Policy representing the legacy policy flag 67 */ 68 public static Policy flagsToPolicy(long flags) { 69 Policy policy = new Policy(); 70 policy.mPasswordMode = ((int) (flags & PASSWORD_MODE_MASK)) >> PASSWORD_MODE_SHIFT; 71 policy.mPasswordMinLength = (int) ((flags & PASSWORD_LENGTH_MASK) >> PASSWORD_LENGTH_SHIFT); 72 policy.mPasswordMaxFails = 73 (int) ((flags & PASSWORD_MAX_FAILS_MASK) >> PASSWORD_MAX_FAILS_SHIFT); 74 policy.mPasswordComplexChars = 75 (int) ((flags & PASSWORD_COMPLEX_CHARS_MASK) >> PASSWORD_COMPLEX_CHARS_SHIFT); 76 policy.mPasswordHistory = (int) ((flags & PASSWORD_HISTORY_MASK) >> PASSWORD_HISTORY_SHIFT); 77 policy.mPasswordExpirationDays = 78 (int) ((flags & PASSWORD_EXPIRATION_MASK) >> PASSWORD_EXPIRATION_SHIFT); 79 policy.mMaxScreenLockTime = 80 (int) ((flags & SCREEN_LOCK_TIME_MASK) >> SCREEN_LOCK_TIME_SHIFT); 81 policy.mRequireRemoteWipe = 0 != (flags & REQUIRE_REMOTE_WIPE); 82 policy.mRequireEncryption = 0 != (flags & REQUIRE_ENCRYPTION); 83 policy.mRequireEncryptionExternal = 0 != (flags & REQUIRE_ENCRYPTION_EXTERNAL); 84 return policy; 85 } 86 } 87 88
