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1: /* SSLContext.java -- an SSL protocol context. 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.net.ssl; 40: 41: import gnu.java.security.Engine; 42: 43: import java.lang.reflect.InvocationTargetException; 44: import java.security.KeyManagementException; 45: import java.security.NoSuchAlgorithmException; 46: import java.security.NoSuchProviderException; 47: import java.security.Provider; 48: import java.security.SecureRandom; 49: import java.security.Security; 50: 51: /** 52: * A "meta-factory" for protocol-specific socket and server socket 53: * factories. This class serves as a clearinghouse for socket 54: * factories and cached session contexts for a particular protocol, 55: * such as SSLv3. 56: * 57: * @author Casey Marshall (rsdio@metastatic.org) 58: */ 59: public class SSLContext 60: { 61: // Constants and fields. 62: // ------------------------------------------------------------------ 63: 64: /** Service name for SSL contexts. */ 65: private static final String SSL_CONTEXT = "SSLContext"; 66: 67: /** The underlying engine. */ 68: private final SSLContextSpi ctxSpi; 69: 70: /** The provider of the engine class. */ 71: private final Provider provider; 72: 73: /** The protocal name. */ 74: private final String protocol; 75: 76: // Constructor. 77: // ------------------------------------------------------------------ 78: 79: /** 80: * Create a new SSL context. 81: * 82: * @param ctxSpi The context engine. 83: * @param provider The provider of the implementation. 84: * @param protocol The name of the SSL protocol. 85: */ 86: protected SSLContext(SSLContextSpi ctxSpi, Provider provider, 87: String protocol) 88: { 89: this.ctxSpi = ctxSpi; 90: this.provider = provider; 91: this.protocol = protocol; 92: } 93: 94: // Class methods. 95: // ------------------------------------------------------------------ 96: 97: /** 98: * Get an instance of a context for the specified protocol from the 99: * first provider that implements it. 100: * 101: * @param protocol The name of the protocol to get a context for. 102: * @return The new context. 103: * @throws NoSuchAlgorithm If no provider implements the given 104: * protocol. 105: */ 106: public static final SSLContext getInstance(String protocol) 107: throws NoSuchAlgorithmException 108: { 109: Provider[] provs = Security.getProviders(); 110: for (int i = 0; i < provs.length; i++) 111: { 112: try 113: { 114: return getInstance(protocol, provs[i]); 115: } 116: catch (NoSuchAlgorithmException ignore) 117: { 118: } 119: } 120: throw new NoSuchAlgorithmException(protocol); 121: } 122: 123: /** 124: * Get an instance of a context for the specified protocol from the 125: * named provider. 126: * 127: * @param protocol The name of the protocol to get a context for. 128: * @param provider The name of the provider to get the 129: * implementation from. 130: * @return The new context. 131: * @throws NoSuchAlgorithmException If the provider does not 132: * implement the given protocol. 133: * @throws NoSuchProviderException If the named provider does not 134: * exist. 135: * @throws IllegalArgumentException If <i>provider</i> is null. 136: */ 137: public static final SSLContext getInstance(String protocol, 138: String provider) 139: throws NoSuchAlgorithmException, NoSuchProviderException 140: { 141: if (provider == null) 142: { 143: throw new IllegalArgumentException("null provider"); 144: } 145: Provider p = Security.getProvider(provider); 146: if (p == null) 147: { 148: throw new NoSuchProviderException(provider); 149: } 150: return getInstance(protocol, p); 151: } 152: 153: /** 154: * Get an instance of a context for the specified protocol from the 155: * specified provider. 156: * 157: * @param protocol The name of the protocol to get a context for. 158: * @param provider The name of the provider to get the 159: * implementation from. 160: * @return The new context. 161: * @throws NoSuchAlgorithmException If the provider does not 162: * implement the given protocol. 163: * @throws IllegalArgumentException If <i>provider</i> is null. 164: */ 165: public static final SSLContext getInstance(String protocol, 166: Provider provider) 167: throws NoSuchAlgorithmException 168: { 169: try 170: { 171: return new SSLContext((SSLContextSpi) 172: Engine.getInstance(SSL_CONTEXT, protocol, provider), 173: provider, protocol); 174: } 175: catch (InvocationTargetException ite) 176: { 177: NoSuchAlgorithmException nsae = new NoSuchAlgorithmException(protocol); 178: throw (NoSuchAlgorithmException) nsae.initCause(ite); 179: } 180: catch (ClassCastException cce) 181: { 182: NoSuchAlgorithmException nsae = new NoSuchAlgorithmException(protocol); 183: throw (NoSuchAlgorithmException) nsae.initCause(cce); 184: } 185: } 186: 187: // Instance methods. 188: // ----------------------------------------------------------------- 189: 190: /** 191: * Returns the set of SSL contexts available for client connections. 192: * 193: * @return The set of SSL contexts available for client connections. 194: */ 195: public final SSLSessionContext getClientSessionContext() 196: { 197: return ctxSpi.engineGetClientSessionContext(); 198: } 199: 200: /** 201: * Returns the protocol name of this context. 202: * 203: * @return The protocol name of this context. 204: */ 205: public final String getProtocol() 206: { 207: return protocol; 208: } 209: 210: /** 211: * Returns the provider of this implementation. 212: * 213: * @return The provider of this implementation. 214: */ 215: public final Provider getProvider() 216: { 217: return provider; 218: } 219: 220: /** 221: * Returns the set of SSL contexts available for server connections. 222: * 223: * @return The set of SSL contexts available for server connections. 224: */ 225: public final SSLSessionContext getServerSessionContext() 226: { 227: return ctxSpi.engineGetServerSessionContext(); 228: } 229: 230: /** 231: * Returns the factory for server SSL sockets. 232: * 233: * @return The factory for server SSL sockets. 234: */ 235: public final SSLServerSocketFactory getServerSocketFactory() 236: { 237: return ctxSpi.engineGetServerSocketFactory(); 238: } 239: 240: /** 241: * Returns the factory for client SSL sockets. 242: * 243: * @return The factory for client SSL sockets. 244: */ 245: public final SSLSocketFactory getSocketFactory() 246: { 247: return ctxSpi.engineGetSocketFactory(); 248: } 249: 250: /** 251: * Initializes this context and prepares it for producing socket 252: * factories. All of the parameters are optional; default values are 253: * used if left unspecified. 254: * 255: * @param keyManagers The set of key managers to use. 256: * @param trustManagers The set of trust managers to use. 257: * @param random A source of random bits to use. 258: * @throws KeyManagementException If initialization fails. 259: */ 260: public final void init(KeyManager[] keyManagers, 261: TrustManager[] trustManagers, 262: SecureRandom random) 263: throws KeyManagementException 264: { 265: ctxSpi.engineInit(keyManagers, trustManagers, random); 266: } 267: }
GNU Classpath (0.20) |