Source Code Cross Referenced for X509AuthenticationProvider.java in  » Security » acegi-security » org » acegisecurity » providers » x509 » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Security » acegi security » org.acegisecurity.providers.x509 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /* Copyright 2004, 2005, 2006 Acegi Technology Pty Limited
002:         *
003:         * Licensed under the Apache License, Version 2.0 (the "License");
004:         * you may not use this file except in compliance with the License.
005:         * You may obtain a copy of the License at
006:         *
007:         *     http://www.apache.org/licenses/LICENSE-2.0
008:         *
009:         * Unless required by applicable law or agreed to in writing, software
010:         * distributed under the License is distributed on an "AS IS" BASIS,
011:         * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012:         * See the License for the specific language governing permissions and
013:         * limitations under the License.
014:         */
015:
016:        package org.acegisecurity.providers.x509;
017:
018:        import org.acegisecurity.AcegiMessageSource;
019:        import org.acegisecurity.Authentication;
020:        import org.acegisecurity.AuthenticationException;
021:        import org.acegisecurity.BadCredentialsException;
022:
023:        import org.acegisecurity.providers.AuthenticationProvider;
024:        import org.acegisecurity.providers.x509.cache.NullX509UserCache;
025:
026:        import org.acegisecurity.userdetails.UserDetails;
027:
028:        import org.apache.commons.logging.Log;
029:        import org.apache.commons.logging.LogFactory;
030:
031:        import org.springframework.beans.factory.InitializingBean;
032:
033:        import org.springframework.context.MessageSource;
034:        import org.springframework.context.MessageSourceAware;
035:        import org.springframework.context.support.MessageSourceAccessor;
036:
037:        import org.springframework.util.Assert;
038:
039:        import java.security.cert.X509Certificate;
040:
041:        /**
042:         * Processes an X.509 authentication request.<p>The request will typically originate from {@link
043:         * org.acegisecurity.ui.x509.X509ProcessingFilter}).</p>
044:         *
045:         * @author Luke Taylor
046:         * @version $Id: X509AuthenticationProvider.java 1948 2007-08-25 00:15:30Z benalex $
047:         */
048:        public class X509AuthenticationProvider implements 
049:                AuthenticationProvider, InitializingBean, MessageSourceAware {
050:            //~ Static fields/initializers =====================================================================================
051:
052:            private static final Log logger = LogFactory
053:                    .getLog(X509AuthenticationProvider.class);
054:
055:            //~ Instance fields ================================================================================================
056:
057:            protected MessageSourceAccessor messages = AcegiMessageSource
058:                    .getAccessor();
059:            private X509AuthoritiesPopulator x509AuthoritiesPopulator;
060:            private X509UserCache userCache = new NullX509UserCache();
061:
062:            //~ Methods ========================================================================================================
063:
064:            public void afterPropertiesSet() throws Exception {
065:                Assert.notNull(userCache, "An x509UserCache must be set");
066:                Assert.notNull(x509AuthoritiesPopulator,
067:                        "An X509AuthoritiesPopulator must be set");
068:                Assert.notNull(this .messages, "A message source must be set");
069:            }
070:
071:            /**
072:             * If the supplied authentication token contains a certificate then this will be passed to the configured
073:             * {@link X509AuthoritiesPopulator} to obtain the user details and authorities for the user identified by the
074:             * certificate.<p>If no certificate is present (for example, if the filter is applied to an HttpRequest for
075:             * which client authentication hasn't been configured in the container) then a BadCredentialsException will be
076:             * raised.</p>
077:             *
078:             * @param authentication the authentication request.
079:             *
080:             * @return an X509AuthenticationToken containing the authorities of the principal represented by the certificate.
081:             *
082:             * @throws AuthenticationException if the {@link X509AuthoritiesPopulator} rejects the certficate.
083:             * @throws BadCredentialsException if no certificate was presented in the authentication request.
084:             */
085:            public Authentication authenticate(Authentication authentication)
086:                    throws AuthenticationException {
087:                if (!supports(authentication.getClass())) {
088:                    return null;
089:                }
090:
091:                if (logger.isDebugEnabled()) {
092:                    logger.debug("X509 authentication request: "
093:                            + authentication);
094:                }
095:
096:                X509Certificate clientCertificate = (X509Certificate) authentication
097:                        .getCredentials();
098:
099:                if (clientCertificate == null) {
100:                    throw new BadCredentialsException(messages.getMessage(
101:                            "X509AuthenticationProvider.certificateNull",
102:                            "Certificate is null"));
103:                }
104:
105:                UserDetails user = userCache
106:                        .getUserFromCache(clientCertificate);
107:
108:                if (user == null) {
109:                    logger.debug("Authenticating with certificate "
110:                            + clientCertificate);
111:                    user = x509AuthoritiesPopulator
112:                            .getUserDetails(clientCertificate);
113:                    userCache.putUserInCache(clientCertificate, user);
114:                }
115:
116:                X509AuthenticationToken result = new X509AuthenticationToken(
117:                        user, clientCertificate, user.getAuthorities());
118:
119:                result.setDetails(authentication.getDetails());
120:
121:                return result;
122:            }
123:
124:            public void setMessageSource(MessageSource messageSource) {
125:                this .messages = new MessageSourceAccessor(messageSource);
126:            }
127:
128:            public void setX509AuthoritiesPopulator(
129:                    X509AuthoritiesPopulator x509AuthoritiesPopulator) {
130:                this .x509AuthoritiesPopulator = x509AuthoritiesPopulator;
131:            }
132:
133:            public void setX509UserCache(X509UserCache cache) {
134:                this .userCache = cache;
135:            }
136:
137:            public boolean supports(Class authentication) {
138:                return X509AuthenticationToken.class
139:                        .isAssignableFrom(authentication);
140:            }
141:        }
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