Source Code Cross Referenced for WarClientHelper.java in  » Web-Services » restlet-1.0.8 » com » noelios » restlet » local » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Web Services » restlet 1.0.8 » com.noelios.restlet.local 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Copyright 2005-2007 Noelios Consulting.
003:         * 
004:         * The contents of this file are subject to the terms of the Common Development
005:         * and Distribution License (the "License"). You may not use this file except in
006:         * compliance with the License.
007:         * 
008:         * You can obtain a copy of the license at
009:         * http://www.opensource.org/licenses/cddl1.txt See the License for the specific
010:         * language governing permissions and limitations under the License.
011:         * 
012:         * When distributing Covered Code, include this CDDL HEADER in each file and
013:         * include the License file at http://www.opensource.org/licenses/cddl1.txt If
014:         * applicable, add the following below this CDDL HEADER, with the fields
015:         * enclosed by brackets "[]" replaced with your own identifying information:
016:         * Portions Copyright [yyyy] [name of copyright owner]
017:         */
018:
019:        package com.noelios.restlet.local;
020:
021:        import java.io.File;
022:        import java.io.IOException;
023:        import java.util.ArrayList;
024:        import java.util.Enumeration;
025:        import java.util.List;
026:        import java.util.jar.JarEntry;
027:        import java.util.jar.JarFile;
028:        import java.util.logging.Level;
029:
030:        import org.restlet.Client;
031:        import org.restlet.data.Protocol;
032:        import org.restlet.data.Reference;
033:        import org.restlet.data.ReferenceList;
034:        import org.restlet.data.Request;
035:        import org.restlet.data.Response;
036:        import org.restlet.data.Status;
037:        import org.restlet.resource.InputRepresentation;
038:        import org.restlet.resource.Representation;
039:
040:        /**
041:         * Connector to the WAR resources. Here is the list of parameters that are
042:         * supported: <table>
043:         * <tr>
044:         * <td>warPath</td>
045:         * <td>String</td>
046:         * <td>${user.home}/restlet.war</td>
047:         * <td>Path to the Web Application WAR file or directory.</td>
048:         * </tr>
049:         * </table>
050:         * 
051:         * @author Jerome Louvel (contact@noelios.com)
052:         */
053:        public class WarClientHelper extends FileClientHelper {
054:            /**
055:             * Restrict the access to the META-INF and WEB-INF directories. False by
056:             * default.
057:             */
058:            private boolean restrict;
059:
060:            /** The location of the Web Application archive file or directory path. */
061:            private String warPath;
062:
063:            /**
064:             * Indicates if the Web Application path corresponds to an archive file or a
065:             * directory path.
066:             */
067:            private boolean webAppArchive;
068:
069:            /** Cache of all the WAR file entries to improve directory listing time. */
070:            private List<String> warEntries;
071:
072:            /**
073:             * Constructor. Note that the common list of metadata associations based on
074:             * extensions is added, see the addCommonExtensions() method.
075:             * 
076:             * @param client
077:             *                The client to help.
078:             */
079:            public WarClientHelper(Client client) {
080:                super (client);
081:                getProtocols().clear();
082:                getProtocols().add(Protocol.WAR);
083:                this .restrict = false;
084:                this .warPath = null;
085:                this .webAppArchive = false;
086:                this .warEntries = null;
087:            }
088:
089:            /**
090:             * Handles a call.
091:             * 
092:             * @param request
093:             *                The request to handle.
094:             * @param response
095:             *                The response to update.
096:             */
097:            public void handle(Request request, Response response) {
098:                String scheme = request.getResourceRef().getScheme();
099:
100:                // Ensure that all ".." and "." are normalized into the path
101:                // to preven unauthorized access to user directories.
102:                request.getResourceRef().normalize();
103:
104:                if (scheme.equalsIgnoreCase("war")) {
105:                    handleWar(request, response);
106:                } else {
107:                    throw new IllegalArgumentException(
108:                            "Protocol \""
109:                                    + scheme
110:                                    + "\" not supported by the connector. Only WAR is supported.");
111:                }
112:            }
113:
114:            /**
115:             * Handles a call using the current Web Application.
116:             * 
117:             * @param request
118:             *                The request to handle.
119:             * @param response
120:             *                The response to update.
121:             */
122:            protected void handleWar(Request request, Response response) {
123:                getWarPath();
124:
125:                if (this .webAppArchive) {
126:                    try {
127:                        String path = request.getResourceRef().getPath();
128:                        JarFile war = new JarFile(getWarPath());
129:                        // As the path may be percent-encoded, it has to be percent-decoded.
130:                        // Prepare a jar URI, removing the leading slash
131:                        if ((path != null) && path.startsWith("/"))
132:                            path = path.substring(1);
133:                        JarEntry entry = war
134:                                .getJarEntry(Reference.decode(path));
135:
136:                        if (entry.isDirectory()) {
137:                            if (warEntries == null) {
138:                                // Cache of all the WAR file entries to improve
139:                                // directory listing time.
140:                                warEntries = new ArrayList<String>();
141:                                for (Enumeration<JarEntry> entries = war
142:                                        .entries(); entries.hasMoreElements();) {
143:                                    warEntries.add(entries.nextElement()
144:                                            .getName());
145:                                }
146:                            }
147:
148:                            // Return the directory listing
149:                            ReferenceList rl = new ReferenceList();
150:                            rl.setIdentifier(request.getResourceRef());
151:
152:                            for (String warEntry : warEntries) {
153:                                if (warEntry.startsWith(path)) {
154:                                    rl.add(new Reference(warEntry));
155:                                }
156:                            }
157:
158:                            response.setEntity(rl.getTextRepresentation());
159:                            response.setStatus(Status.SUCCESS_OK);
160:                        } else {
161:                            // Return the file content
162:                            Representation output = new InputRepresentation(war
163:                                    .getInputStream(entry), null);
164:                            updateMetadata(getMetadataService(request), path,
165:                                    output);
166:                            output.setIdentifier(request.getResourceRef());
167:                            response.setEntity(output);
168:                            response.setStatus(Status.SUCCESS_OK);
169:                        }
170:                    } catch (IOException e) {
171:                        getLogger().log(Level.WARNING,
172:                                "Unable to access to the WAR file", e);
173:                        response.setStatus(Status.SERVER_ERROR_INTERNAL);
174:                    }
175:
176:                } else {
177:                    String path = request.getResourceRef().getPath();
178:
179:                    if (isRestrict()
180:                            && path.toUpperCase().startsWith("/WEB-INF/")) {
181:                        getLogger().warning(
182:                                "Forbidden access to the WEB-INF directory detected. Path requested: "
183:                                        + path);
184:                        response.setStatus(Status.CLIENT_ERROR_NOT_FOUND);
185:                    } else if (isRestrict()
186:                            && path.toUpperCase().startsWith("/META-INF/")) {
187:                        getLogger().warning(
188:                                "Forbidden access to the META-INF directory detected. Path requested: "
189:                                        + path);
190:                        response.setStatus(Status.CLIENT_ERROR_NOT_FOUND);
191:                    } else {
192:                        path = getWarPath() + path;
193:                        handleFile(request, response, path);
194:                    }
195:                }
196:            }
197:
198:            /**
199:             * Returns the Web Application archive file or directory path.
200:             * 
201:             * @return The Web Application archive file or directory path.
202:             */
203:            public String getWarPath() {
204:                if (this .warPath == null) {
205:                    this .warPath = getParameters().getFirstValue(
206:                            "warPath",
207:                            System.getProperty("user.home") + File.separator
208:                                    + "restlet.war");
209:                    File file = new File(this .warPath);
210:
211:                    if (file.exists()) {
212:                        if (file.isDirectory()) {
213:                            this .webAppArchive = false;
214:
215:                            // Adjust the archive directory path if necessary
216:                            if (warPath.endsWith("/"))
217:                                this .warPath = this .warPath.substring(0,
218:                                        this .warPath.length() - 1);
219:                        } else {
220:                            this .webAppArchive = true;
221:                        }
222:                    } else {
223:                        getLogger().warning(
224:                                "Unable to find an existing directory or archive at: "
225:                                        + this .warPath);
226:                    }
227:                }
228:
229:                return this .warPath;
230:            }
231:
232:            /**
233:             * Indicates if the access to the META-INF and WEB-INF directories is
234:             * restricted. False by default.
235:             * 
236:             * @return True if the access is restricted.
237:             */
238:            public boolean isRestrict() {
239:                return this .restrict;
240:            }
241:
242:            /**
243:             * Indicates if the access to the META-INF and WEB-INF directories is
244:             * restricted.
245:             * 
246:             * @param restrict
247:             *                True if the access is restricted.
248:             */
249:            public void setRestrict(boolean restrict) {
250:                this.restrict = restrict;
251:            }
252:
253:        }
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