Source Code Cross Referenced for SSHandler.java in  » J2EE » JOnAS-4.8.6 » org » objectweb » security » propagation » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » J2EE » JOnAS 4.8.6 » org.objectweb.security.propagation 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * JOnAS: Java(TM) Open Application Server
003:         * Copyright (C) 1999 Bull S.A.
004:         * Contact: jonas-team@objectweb.org
005:         * 
006:         * This library 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 2.1 of the License, or any later version.
010:         * 
011:         * This library 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
017:         * License along with this library; if not, write to the Free Software
018:         * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
019:         * USA
020:         *
021:         * Initial developer(s): ____________________________________.
022:         * Contributor(s): ______________________________________.
023:         *
024:         * --------------------------------------------------------------------------
025:         * $Id: SSHandler.java 4759 2004-05-17 07:22:36Z durieuxp $
026:         * --------------------------------------------------------------------------
027:         */
028:
029:        package org.objectweb.security.propagation;
030:
031:        import org.objectweb.jeremie.services.handler.api.Service;
032:        import org.objectweb.jonathan.apis.kernel.Context;
033:        import org.objectweb.jonathan.apis.kernel.JonathanException;
034:        import org.objectweb.jonathan.presentation.api.Marshaller;
035:        import org.objectweb.jonathan.presentation.api.MarshallerFactory;
036:        import org.objectweb.jonathan.presentation.api.UnMarshaller;
037:        import org.objectweb.jonathan.resources.api.Chunk;
038:        import org.objectweb.jonathan.helpers.MessageHelpers;
039:        import org.objectweb.security.context.SecurityContext;
040:        import org.omg.IOP.ServiceContext;
041:
042:        public class SSHandler implements  Service {
043:
044:            private SecuritySender sender = null;
045:            private SecurityReceiver receiver = null;
046:            private MarshallerFactory mf;
047:            private int service_id = 200; // default value
048:
049:            /** 
050:             * Creates a new SSHandler instance.
051:             */
052:            public SSHandler(Context c, Object[] used_components)
053:                    throws JonathanException {
054:                int sid = ((Integer) used_components[0]).intValue();
055:                if (sid != Integer.MAX_VALUE) {
056:                    service_id = sid;
057:                }
058:
059:                try {
060:                    sender = (SecuritySender) used_components[1];
061:                    receiver = (SecurityReceiver) used_components[2];
062:                    mf = (MarshallerFactory) used_components[3];
063:                } catch (Exception e) {
064:                    throw new JonathanException(e);
065:                }
066:            }
067:
068:            /** 
069:             * Returns a request context.
070:             * <p>
071:             * If sender is not null, this method encodes the security context 
072:             * returned by the sending_request method of the sender, else it returns null.
073:             * 
074:             * @param request_id        the request identifier;
075:             * @param response_expected unused;
076:             * @param object_key        unused.
077:             * @return                  a service context.
078:             */
079:            public ServiceContext getRequestContext(int request_id,
080:                    boolean response_expected, byte[] object_key,
081:                    Context kContext) {
082:                if (sender == null) {
083:                    return null;
084:                }
085:                SecurityContext ctx = sender.sending_request(request_id);
086:                return encodeContext(ctx);
087:            }
088:
089:            /** 
090:             * Returns a reply context.
091:             * <p>
092:             * this method encodes the security context 
093:             * returned by its <code>sending_reply</code> method, else it returns null.
094:             *
095:             * @param request_id the corresponding request id.
096:             * @return           a service context.
097:             */
098:            public ServiceContext getReplyContext(int request_id,
099:                    Context kContext) {
100:                if (receiver == null) {
101:                    return null;
102:                }
103:                SecurityContext ctx = receiver.sending_reply(request_id);
104:                return encodeContext(ctx);
105:            }
106:
107:            /** 
108:             * This method is called by the services handler to let the operations 
109:             * related to the target service be performed on request arrival.
110:             *
111:             * @param context            the service context of the request;
112:             * @param request_id         the request identifier;
113:             * @param response_expected  unused;
114:             * @param object_key         unused.
115:             */
116:            public void handleRequestContext(ServiceContext context,
117:                    int request_id, boolean response_expected,
118:                    byte[] object_key, Context kContext) {
119:                if ((receiver == null) || (context == null)
120:                        || (context.context_data == null)
121:                        || (context.context_data.length == 0)) {
122:                    return;
123:                }
124:                SecurityContext ctx = decodeContext(context);
125:                if (ctx != null) {
126:                    receiver.received_request(request_id, ctx);
127:                }
128:            }
129:
130:            /** 
131:             * This method is called by the services handler to let the operations 
132:             * related to the target service be performed on reply arrival.
133:             *
134:             * @param context     the service context of the reply;
135:             * @param request_id  the corresponding request identifier.
136:             */
137:            public void handleReplyContext(ServiceContext context,
138:                    int request_id, Context kContext) {
139:                if ((receiver == null) || (context == null)
140:                        || (context.context_data == null)
141:                        || (context.context_data.length == 0)) {
142:                    return;
143:                }
144:                SecurityContext ctx = decodeContext(context);
145:                if (ctx != null) {
146:                    sender.received_reply(request_id, ctx);
147:                }
148:            }
149:
150:            /**
151:             * Encodes a Security context into an IOP service context.
152:             *
153:             * @param ctx the propagation context to be encoded.
154:             * @return the resulting IOP service context.
155:             */
156:            private ServiceContext encodeContext(SecurityContext ctx) {
157:                if (ctx == null) {
158:                    return null;
159:                }
160:                Marshaller marshaller = mf.newMarshaller();
161:                byte[] byteArray = null;
162:                try {
163:                    marshaller.writeReference(ctx);
164:                    byteArray = MessageHelpers.copy(marshaller);
165:                    marshaller.close();
166:                } catch (Exception e) {
167:                    System.err.println("SSHandler.encodeContext: exception");
168:                    e.printStackTrace();
169:                }
170:                return new ServiceContext(service_id, byteArray);
171:            }
172:
173:            /**
174:             * Decodes a Security context from an IOP service context.
175:             *
176:             * @param ctx the IOP service context containing the encoded security context.
177:             * @return the decoded security context.
178:             */
179:            private SecurityContext decodeContext(ServiceContext sc) {
180:                if ((sc == null) || (sc.context_data == null)
181:                        || (sc.context_data.length == 0)) {
182:                    return null;
183:                }
184:                SecurityContext ctx = null;
185:                byte[] byteArray = sc.context_data;
186:                UnMarshaller unmarshaller = mf.newUnMarshaller(new Chunk(
187:                        byteArray, 0, byteArray.length), 0);
188:                try {
189:                    ctx = (SecurityContext) unmarshaller.readReference();
190:                    unmarshaller.close();
191:                } catch (Exception e) {
192:                    System.err.println("SSHandler.decodeContext: exception");
193:                    System.err.println(e.toString() + "\n");
194:                }
195:                return ctx;
196:            }
197:
198:        }
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