GNU Classpath (0.20) | |
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1: /* Configuration.java 2: Copyright (C) 2004 Free Software Foundation, Inc. 3: 4: This file is part of GNU Classpath. 5: 6: GNU Classpath is free software; you can redistribute it and/or modify 7: it under the terms of the GNU General Public License as published by 8: the Free Software Foundation; either version 2, or (at your option) 9: any later version. 10: 11: GNU Classpath is distributed in the hope that it will be useful, but 12: WITHOUT ANY WARRANTY; without even the implied warranty of 13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14: General Public License for more details. 15: 16: You should have received a copy of the GNU General Public License 17: along with GNU Classpath; see the file COPYING. If not, write to the 18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 19: 02110-1301 USA. 20: 21: Linking this library statically or dynamically with other modules is 22: making a combined work based on this library. Thus, the terms and 23: conditions of the GNU General Public License cover the whole 24: combination. 25: 26: As a special exception, the copyright holders of this library give you 27: permission to link this library with independent modules to produce an 28: executable, regardless of the license terms of these independent 29: modules, and to copy and distribute the resulting executable under 30: terms of your choice, provided that you also meet, for each linked 31: independent module, the terms and conditions of the license of that 32: module. An independent module is a module which is not derived from 33: or based on this library. If you modify this library, you may extend 34: this exception to your version of the library, but you are not 35: obligated to do so. If you do not wish to do so, delete this 36: exception statement from your version. */ 37: 38: 39: package javax.security.auth.login; 40: 41: import java.security.AccessController; 42: import java.security.PrivilegedAction; 43: import java.security.Security; 44: 45: import javax.security.auth.AuthPermission; 46: 47: public abstract class Configuration 48: { 49: 50: // Fields. 51: // ------------------------------------------------------------------------- 52: 53: private static Configuration config; 54: 55: // Constructors. 56: // ------------------------------------------------------------------------- 57: 58: protected Configuration() 59: { 60: } 61: 62: // Class methods. 63: // ------------------------------------------------------------------------- 64: 65: public static synchronized Configuration getConfiguration() 66: { 67: SecurityManager sm = System.getSecurityManager(); 68: if (sm != null) 69: sm.checkPermission (new AuthPermission ("getLoginConfiguration")); 70: return getConfig(); 71: } 72: 73: public static synchronized void setConfiguration (Configuration config) 74: { 75: SecurityManager sm = System.getSecurityManager(); 76: if (sm != null) 77: sm.checkPermission (new AuthPermission ("setLoginConfiguration")); 78: Configuration.config = config; 79: } 80: 81: // Abstract methods. 82: // ------------------------------------------------------------------------- 83: 84: public abstract AppConfigurationEntry[] getAppConfigurationEntry (String applicationName); 85: 86: public abstract void refresh(); 87: 88: // Package-private methods. 89: // ------------------------------------------------------------------------- 90: 91: /** 92: * Get the current configuration, bypassing security checks. 93: */ 94: static Configuration getConfig() 95: { 96: if (config == null) 97: { 98: String conf = (String) AccessController.doPrivileged 99: (new PrivilegedAction() 100: { 101: public Object run() 102: { 103: return Security.getProperty ("login.configuration.provider"); 104: } 105: }); 106: try 107: { 108: if (conf != null) 109: config = (Configuration) Class.forName (conf).newInstance(); 110: else 111: config = new NullConfiguration(); 112: } 113: catch (Exception x) 114: { 115: config = new NullConfiguration(); 116: } 117: } 118: return config; 119: } 120: }
GNU Classpath (0.20) |