| /* Copyright (C) 2011 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.emailcommon.service; |
| |
| import com.android.emailcommon.provider.Policy; |
| |
| /** |
| * Legacy class for policy storage as a bit field of flags |
| */ |
| public class LegacyPolicySet { |
| |
| // Security (provisioning) flags |
| // bits 0..4: password length (0=no password required) |
| public static final int PASSWORD_LENGTH_MASK = 31; |
| public static final int PASSWORD_LENGTH_SHIFT = 0; |
| public static final int PASSWORD_LENGTH_MAX = 30; |
| // bits 5..8: password mode |
| public static final int PASSWORD_MODE_SHIFT = 5; |
| public static final int PASSWORD_MODE_MASK = 15 << PASSWORD_MODE_SHIFT; |
| public static final int PASSWORD_MODE_NONE = 0 << PASSWORD_MODE_SHIFT; |
| public static final int PASSWORD_MODE_SIMPLE = 1 << PASSWORD_MODE_SHIFT; |
| public static final int PASSWORD_MODE_STRONG = 2 << PASSWORD_MODE_SHIFT; |
| // bits 9..13: password failures -> wipe device (0=disabled) |
| public static final int PASSWORD_MAX_FAILS_SHIFT = 9; |
| public static final int PASSWORD_MAX_FAILS_MASK = 31 << PASSWORD_MAX_FAILS_SHIFT; |
| public static final int PASSWORD_MAX_FAILS_MAX = 31; |
| // bits 14..24: seconds to screen lock (0=not required) |
| public static final int SCREEN_LOCK_TIME_SHIFT = 14; |
| public static final int SCREEN_LOCK_TIME_MASK = 2047 << SCREEN_LOCK_TIME_SHIFT; |
| public static final int SCREEN_LOCK_TIME_MAX = 2047; |
| // bit 25: remote wipe capability required |
| public static final int REQUIRE_REMOTE_WIPE = 1 << 25; |
| // bit 26..35: password expiration (days; 0=not required) |
| public static final int PASSWORD_EXPIRATION_SHIFT = 26; |
| public static final long PASSWORD_EXPIRATION_MASK = 1023L << PASSWORD_EXPIRATION_SHIFT; |
| public static final int PASSWORD_EXPIRATION_MAX = 1023; |
| // bit 36..43: password history (length; 0=not required) |
| public static final int PASSWORD_HISTORY_SHIFT = 36; |
| public static final long PASSWORD_HISTORY_MASK = 255L << PASSWORD_HISTORY_SHIFT; |
| public static final int PASSWORD_HISTORY_MAX = 255; |
| // bit 44..48: min complex characters (0=not required) |
| public static final int PASSWORD_COMPLEX_CHARS_SHIFT = 44; |
| public static final long PASSWORD_COMPLEX_CHARS_MASK = 31L << PASSWORD_COMPLEX_CHARS_SHIFT; |
| public static final int PASSWORD_COMPLEX_CHARS_MAX = 31; |
| // bit 49: requires device encryption (internal) |
| public static final long REQUIRE_ENCRYPTION = 1L << 49; |
| // bit 50: requires external storage encryption |
| public static final long REQUIRE_ENCRYPTION_EXTERNAL = 1L << 50; |
| |
| /** |
| * Convert legacy policy flags to a Policy |
| * @param flags legacy policy flags |
| * @return a Policy representing the legacy policy flag |
| */ |
| public static Policy flagsToPolicy(long flags) { |
| Policy policy = new Policy(); |
| policy.mPasswordMode = ((int) (flags & PASSWORD_MODE_MASK)) >> PASSWORD_MODE_SHIFT; |
| policy.mPasswordMinLength = (int) ((flags & PASSWORD_LENGTH_MASK) >> PASSWORD_LENGTH_SHIFT); |
| policy.mPasswordMaxFails = |
| (int) ((flags & PASSWORD_MAX_FAILS_MASK) >> PASSWORD_MAX_FAILS_SHIFT); |
| policy.mPasswordComplexChars = |
| (int) ((flags & PASSWORD_COMPLEX_CHARS_MASK) >> PASSWORD_COMPLEX_CHARS_SHIFT); |
| policy.mPasswordHistory = (int) ((flags & PASSWORD_HISTORY_MASK) >> PASSWORD_HISTORY_SHIFT); |
| policy.mPasswordExpirationDays = |
| (int) ((flags & PASSWORD_EXPIRATION_MASK) >> PASSWORD_EXPIRATION_SHIFT); |
| policy.mMaxScreenLockTime = |
| (int) ((flags & SCREEN_LOCK_TIME_MASK) >> SCREEN_LOCK_TIME_SHIFT); |
| policy.mRequireRemoteWipe = 0 != (flags & REQUIRE_REMOTE_WIPE); |
| policy.mRequireEncryption = 0 != (flags & REQUIRE_ENCRYPTION); |
| policy.mRequireEncryptionExternal = 0 != (flags & REQUIRE_ENCRYPTION_EXTERNAL); |
| return policy; |
| } |
| } |
| |