| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||||||
| BasePasswordEncoder |
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| 5.5;5.5 |
| 1 | /* Copyright 2004, 2005, 2006 Acegi Technology Pty Limited |
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| 2 | * |
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| 3 | * Licensed under the Apache License, Version 2.0 (the "License"); |
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| 4 | * you may not use this file except in compliance with the License. |
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| 5 | * You may obtain a copy of the License at |
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| 6 | * |
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| 7 | * http://www.apache.org/licenses/LICENSE-2.0 |
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| 8 | * |
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| 9 | * Unless required by applicable law or agreed to in writing, software |
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| 10 | * distributed under the License is distributed on an "AS IS" BASIS, |
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| 11 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| 12 | * See the License for the specific language governing permissions and |
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| 13 | * limitations under the License. |
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| 14 | */ |
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| 15 | ||
| 16 | package org.acegisecurity.providers.encoding; |
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| 17 | ||
| 18 | /** |
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| 19 | * <p>Convenience base for all password encoders.</p> |
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| 20 | * |
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| 21 | * @author Ben Alex |
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| 22 | * @version $Id: BasePasswordEncoder.java 1496 2006-05-23 13:38:33Z benalex $ |
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| 23 | */ |
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| 24 | 55 | public abstract class BasePasswordEncoder implements PasswordEncoder { |
| 25 | //~ Methods ======================================================================================================== |
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| 26 | ||
| 27 | /** |
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| 28 | * Used by subclasses to extract the password and salt from a merged <code>String</code> created using |
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| 29 | * {@link #mergePasswordAndSalt(String,Object,boolean)}.<p>The first element in the returned array is the |
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| 30 | * password. The second element is the salt. The salt array element will always be present, even if no salt was |
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| 31 | * found in the <code>mergedPasswordSalt</code> argument.</p> |
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| 32 | * |
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| 33 | * @param mergedPasswordSalt as generated by <code>mergePasswordAndSalt</code> |
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| 34 | * |
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| 35 | * @return an array, in which the first element is the password and the second the salt |
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| 36 | * |
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| 37 | * @throws IllegalArgumentException if mergedPasswordSalt is null or empty. |
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| 38 | */ |
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| 39 | protected String[] demergePasswordAndSalt(String mergedPasswordSalt) { |
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| 40 | 8 | if ((mergedPasswordSalt == null) || "".equals(mergedPasswordSalt)) { |
| 41 | 2 | throw new IllegalArgumentException("Cannot pass a null or empty String"); |
| 42 | } |
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| 43 | ||
| 44 | 6 | String password = mergedPasswordSalt; |
| 45 | 6 | String salt = ""; |
| 46 | ||
| 47 | 6 | int saltBegins = mergedPasswordSalt.lastIndexOf("{"); |
| 48 | ||
| 49 | 6 | if ((saltBegins != -1) && ((saltBegins + 1) < mergedPasswordSalt.length())) { |
| 50 | 4 | salt = mergedPasswordSalt.substring(saltBegins + 1, mergedPasswordSalt.length() - 1); |
| 51 | 4 | password = mergedPasswordSalt.substring(0, saltBegins); |
| 52 | } |
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| 53 | ||
| 54 | 6 | return new String[] {password, salt}; |
| 55 | } |
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| 56 | ||
| 57 | /** |
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| 58 | * Used by subclasses to generate a merged password and salt <code>String</code>.<P>The generated password |
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| 59 | * will be in the form of <code>password{salt}</code>.</p> |
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| 60 | * <p>A <code>null</code> can be passed to either method, and will be handled correctly. If the |
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| 61 | * <code>salt</code> is <code>null</code> or empty, the resulting generated password will simply be the passed |
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| 62 | * <code>password</code>. The <code>toString</code> method of the <code>salt</code> will be used to represent the |
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| 63 | * salt.</p> |
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| 64 | * |
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| 65 | * @param password the password to be used (can be <code>null</code>) |
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| 66 | * @param salt the salt to be used (can be <code>null</code>) |
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| 67 | * @param strict ensures salt doesn't contain the delimiters |
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| 68 | * |
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| 69 | * @return a merged password and salt <code>String</code> |
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| 70 | * |
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| 71 | * @throws IllegalArgumentException if the salt contains '{' or '}' characters. |
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| 72 | */ |
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| 73 | protected String mergePasswordAndSalt(String password, Object salt, boolean strict) { |
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| 74 | 50 | if (password == null) { |
| 75 | 1 | password = ""; |
| 76 | } |
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| 77 | ||
| 78 | 50 | if (strict && (salt != null)) { |
| 79 | 10 | if ((salt.toString().lastIndexOf("{") != -1) || (salt.toString().lastIndexOf("}") != -1)) { |
| 80 | 2 | throw new IllegalArgumentException("Cannot use { or } in salt.toString()"); |
| 81 | } |
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| 82 | } |
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| 83 | ||
| 84 | 48 | if ((salt == null) || "".equals(salt)) { |
| 85 | 22 | return password; |
| 86 | } else { |
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| 87 | 26 | return password + "{" + salt.toString() + "}"; |
| 88 | } |
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| 89 | } |
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| 90 | } |