88 lines
4.4 KiB
Java
88 lines
4.4 KiB
Java
/* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.emailcommon.service;
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import com.android.emailcommon.provider.Policy;
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/**
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* Legacy class for policy storage as a bit field of flags
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*/
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public class LegacyPolicySet {
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// Security (provisioning) flags
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// bits 0..4: password length (0=no password required)
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public static final int PASSWORD_LENGTH_MASK = 31;
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public static final int PASSWORD_LENGTH_SHIFT = 0;
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public static final int PASSWORD_LENGTH_MAX = 30;
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// bits 5..8: password mode
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public static final int PASSWORD_MODE_SHIFT = 5;
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public static final int PASSWORD_MODE_MASK = 15 << PASSWORD_MODE_SHIFT;
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public static final int PASSWORD_MODE_NONE = 0 << PASSWORD_MODE_SHIFT;
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public static final int PASSWORD_MODE_SIMPLE = 1 << PASSWORD_MODE_SHIFT;
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public static final int PASSWORD_MODE_STRONG = 2 << PASSWORD_MODE_SHIFT;
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// bits 9..13: password failures -> wipe device (0=disabled)
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public static final int PASSWORD_MAX_FAILS_SHIFT = 9;
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public static final int PASSWORD_MAX_FAILS_MASK = 31 << PASSWORD_MAX_FAILS_SHIFT;
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public static final int PASSWORD_MAX_FAILS_MAX = 31;
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// bits 14..24: seconds to screen lock (0=not required)
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public static final int SCREEN_LOCK_TIME_SHIFT = 14;
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public static final int SCREEN_LOCK_TIME_MASK = 2047 << SCREEN_LOCK_TIME_SHIFT;
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public static final int SCREEN_LOCK_TIME_MAX = 2047;
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// bit 25: remote wipe capability required
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public static final int REQUIRE_REMOTE_WIPE = 1 << 25;
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// bit 26..35: password expiration (days; 0=not required)
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public static final int PASSWORD_EXPIRATION_SHIFT = 26;
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public static final long PASSWORD_EXPIRATION_MASK = 1023L << PASSWORD_EXPIRATION_SHIFT;
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public static final int PASSWORD_EXPIRATION_MAX = 1023;
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// bit 36..43: password history (length; 0=not required)
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public static final int PASSWORD_HISTORY_SHIFT = 36;
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public static final long PASSWORD_HISTORY_MASK = 255L << PASSWORD_HISTORY_SHIFT;
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public static final int PASSWORD_HISTORY_MAX = 255;
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// bit 44..48: min complex characters (0=not required)
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public static final int PASSWORD_COMPLEX_CHARS_SHIFT = 44;
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public static final long PASSWORD_COMPLEX_CHARS_MASK = 31L << PASSWORD_COMPLEX_CHARS_SHIFT;
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public static final int PASSWORD_COMPLEX_CHARS_MAX = 31;
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// bit 49: requires device encryption (internal)
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public static final long REQUIRE_ENCRYPTION = 1L << 49;
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// bit 50: requires external storage encryption
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public static final long REQUIRE_ENCRYPTION_EXTERNAL = 1L << 50;
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/**
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* Convert legacy policy flags to a Policy
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* @param flags legacy policy flags
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* @return a Policy representing the legacy policy flag
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*/
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public static Policy flagsToPolicy(long flags) {
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Policy policy = new Policy();
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policy.mPasswordMode = ((int) (flags & PASSWORD_MODE_MASK)) >> PASSWORD_MODE_SHIFT;
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policy.mPasswordMinLength = (int) ((flags & PASSWORD_LENGTH_MASK) >> PASSWORD_LENGTH_SHIFT);
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policy.mPasswordMaxFails =
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(int) ((flags & PASSWORD_MAX_FAILS_MASK) >> PASSWORD_MAX_FAILS_SHIFT);
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policy.mPasswordComplexChars =
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(int) ((flags & PASSWORD_COMPLEX_CHARS_MASK) >> PASSWORD_COMPLEX_CHARS_SHIFT);
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policy.mPasswordHistory = (int) ((flags & PASSWORD_HISTORY_MASK) >> PASSWORD_HISTORY_SHIFT);
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policy.mPasswordExpirationDays =
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(int) ((flags & PASSWORD_EXPIRATION_MASK) >> PASSWORD_EXPIRATION_SHIFT);
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policy.mMaxScreenLockTime =
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(int) ((flags & SCREEN_LOCK_TIME_MASK) >> SCREEN_LOCK_TIME_SHIFT);
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policy.mRequireRemoteWipe = 0 != (flags & REQUIRE_REMOTE_WIPE);
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policy.mRequireEncryption = 0 != (flags & REQUIRE_ENCRYPTION);
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policy.mRequireEncryptionExternal = 0 != (flags & REQUIRE_ENCRYPTION_EXTERNAL);
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return policy;
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}
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}
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