001 /* 002 * SonarQube, open source software quality management tool. 003 * Copyright (C) 2008-2014 SonarSource 004 * mailto:contact AT sonarsource DOT com 005 * 006 * SonarQube is free software; you can redistribute it and/or 007 * modify it under the terms of the GNU Lesser General Public 008 * License as published by the Free Software Foundation; either 009 * version 3 of the License, or (at your option) any later version. 010 * 011 * SonarQube is distributed in the hope that it will be useful, 012 * but WITHOUT ANY WARRANTY; without even the implied warranty of 013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 014 * Lesser General Public License for more details. 015 * 016 * You should have received a copy of the GNU Lesser General Public License 017 * along with this program; if not, write to the Free Software Foundation, 018 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 019 */ 020 021 package org.sonar.process; 022 023 import javax.annotation.Nullable; 024 import java.util.HashMap; 025 import java.util.Locale; 026 import java.util.Map; 027 import java.util.regex.Matcher; 028 import java.util.regex.Pattern; 029 030 /** 031 * @since 3.0 032 */ 033 public final class Encryption { 034 035 private static final String BASE64_ALGORITHM = "b64"; 036 037 private static final String AES_ALGORITHM = "aes"; 038 private final AesCipher aesCipher; 039 040 private final Map<String, Cipher> ciphers = new HashMap<String, Cipher>(); 041 private static final Pattern ENCRYPTED_PATTERN = Pattern.compile("\\{(.*?)\\}(.*)"); 042 043 public Encryption(@Nullable String pathToSecretKey) { 044 aesCipher = new AesCipher(pathToSecretKey); 045 ciphers.put(BASE64_ALGORITHM, new Base64Cipher()); 046 ciphers.put(AES_ALGORITHM, aesCipher); 047 } 048 049 public boolean isEncrypted(String value) { 050 return value.indexOf('{') == 0 && value.indexOf('}') > 1; 051 } 052 053 public String decrypt(String encryptedText) { 054 Matcher matcher = ENCRYPTED_PATTERN.matcher(encryptedText); 055 if (matcher.matches()) { 056 Cipher cipher = ciphers.get(matcher.group(1).toLowerCase(Locale.ENGLISH)); 057 if (cipher != null) { 058 return cipher.decrypt(matcher.group(2)); 059 } 060 } 061 return encryptedText; 062 } 063 064 }