diff options
Diffstat (limited to 'gcc-4.4.3/libjava/classpath/gnu/javax/crypto/sasl/crammd5/CramMD5Client.java')
| -rw-r--r-- | gcc-4.4.3/libjava/classpath/gnu/javax/crypto/sasl/crammd5/CramMD5Client.java | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/gcc-4.4.3/libjava/classpath/gnu/javax/crypto/sasl/crammd5/CramMD5Client.java b/gcc-4.4.3/libjava/classpath/gnu/javax/crypto/sasl/crammd5/CramMD5Client.java new file mode 100644 index 000000000..c90cbe986 --- /dev/null +++ b/gcc-4.4.3/libjava/classpath/gnu/javax/crypto/sasl/crammd5/CramMD5Client.java @@ -0,0 +1,168 @@ +/* CramMD5Client.java -- + Copyright (C) 2003, 2006 Free Software Foundation, Inc. + +This file is a part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2 of the License, or (at +your option) any later version. + +GNU Classpath is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; if not, write to the Free Software +Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 +USA + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package gnu.javax.crypto.sasl.crammd5; + +import gnu.java.security.Registry; +import gnu.java.security.util.Util; +import gnu.javax.crypto.sasl.ClientMechanism; + +import java.io.IOException; +import java.security.InvalidKeyException; + +import javax.security.auth.callback.Callback; +import javax.security.auth.callback.NameCallback; +import javax.security.auth.callback.PasswordCallback; +import javax.security.auth.callback.UnsupportedCallbackException; +import javax.security.sasl.AuthenticationException; +import javax.security.sasl.SaslClient; +import javax.security.sasl.SaslException; + +/** + * The CRAM-MD5 SASL client-side mechanism. + */ +public class CramMD5Client + extends ClientMechanism + implements SaslClient +{ + public CramMD5Client() + { + super(Registry.SASL_CRAM_MD5_MECHANISM); + } + + protected void initMechanism() throws SaslException + { + } + + protected void resetMechanism() throws SaslException + { + } + + public boolean hasInitialResponse() + { + return false; + } + + public byte[] evaluateChallenge(final byte[] challenge) throws SaslException + { + if (challenge == null) + throw new SaslException("null challenge"); + try + { + final String username; + final char[] password; + Callback[] callbacks; + if ((! properties.containsKey(Registry.SASL_USERNAME)) + && (! properties.containsKey(Registry.SASL_PASSWORD))) + { + callbacks = new Callback[2]; + final NameCallback nameCB; + final String defaultName = System.getProperty("user.name"); + if (defaultName == null) + nameCB = new NameCallback("username: "); + else + nameCB = new NameCallback("username: ", defaultName); + final PasswordCallback pwdCB = new PasswordCallback("password: ", + false); + callbacks[0] = nameCB; + callbacks[1] = pwdCB; + this.handler.handle(callbacks); + username = nameCB.getName(); + password = pwdCB.getPassword(); + } + else + { + if (properties.containsKey(Registry.SASL_USERNAME)) + username = (String) properties.get(Registry.SASL_USERNAME); + else + { + callbacks = new Callback[1]; + final NameCallback nameCB; + final String defaultName = System.getProperty("user.name"); + if (defaultName == null) + nameCB = new NameCallback("username: "); + else + nameCB = new NameCallback("username: ", defaultName); + callbacks[0] = nameCB; + this.handler.handle(callbacks); + username = nameCB.getName(); + } + + if (properties.containsKey(Registry.SASL_PASSWORD)) + password = ((String) properties.get(Registry.SASL_PASSWORD)).toCharArray(); + else + { + callbacks = new Callback[1]; + final PasswordCallback pwdCB = new PasswordCallback("password: ", + false); + callbacks[0] = pwdCB; + this.handler.handle(callbacks); + password = pwdCB.getPassword(); + } + } + if (password == null) + throw new SaslException("null password supplied"); + final byte[] digest; + try + { + digest = CramMD5Util.createHMac(password, challenge); + } + catch (InvalidKeyException x) + { + throw new AuthenticationException("evaluateChallenge()", x); + } + final String response = username + " " + + Util.toString(digest).toLowerCase(); + this.complete = true; + return response.getBytes("UTF-8"); + } + catch (UnsupportedCallbackException x) + { + throw new AuthenticationException("evaluateChallenge()", x); + } + catch (IOException x) + { + throw new AuthenticationException("evaluateChallenge()", x); + } + } + + protected String getNegotiatedQOP() + { + return Registry.QOP_AUTH; + } +} |