Source Code Cross Referenced for IPAddressModerationPlugin.java in  » Blogger-System » blojsom-3.1 » org » blojsom » plugin » moderation » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Blogger System » blojsom 3.1 » org.blojsom.plugin.moderation 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /**
002:         * Copyright (c) 2003-2007, David A. Czarnecki
003:         * All rights reserved.
004:         *
005:         * Redistribution and use in source and binary forms, with or without
006:         * modification, are permitted provided that the following conditions are met:
007:         *
008:         * Redistributions of source code must retain the above copyright notice, this list of conditions and the
009:         *     following disclaimer.
010:         * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the
011:         *     following disclaimer in the documentation and/or other materials provided with the distribution.
012:         * Neither the name of "David A. Czarnecki" and "blojsom" nor the names of its contributors may be used to
013:         *     endorse or promote products derived from this software without specific prior written permission.
014:         * Products derived from this software may not be called "blojsom", nor may "blojsom" appear in their name,
015:         *     without prior written permission of David A. Czarnecki.
016:         *
017:         * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
018:         * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
019:         * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
020:         * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
021:         * EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
022:         * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
023:         * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
024:         * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
025:         * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
026:         * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
027:         * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
028:         * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
029:         * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
030:         */package org.blojsom.plugin.moderation;
031:
032:        import org.apache.commons.logging.Log;
033:        import org.apache.commons.logging.LogFactory;
034:        import org.blojsom.blog.Blog;
035:        import org.blojsom.blog.Entry;
036:        import org.blojsom.event.Event;
037:        import org.blojsom.event.EventBroadcaster;
038:        import org.blojsom.event.Listener;
039:        import org.blojsom.plugin.Plugin;
040:        import org.blojsom.plugin.PluginException;
041:        import org.blojsom.plugin.comment.CommentModerationPlugin;
042:        import org.blojsom.plugin.comment.CommentPlugin;
043:        import org.blojsom.plugin.comment.event.CommentResponseSubmissionEvent;
044:        import org.blojsom.plugin.pingback.PingbackPlugin;
045:        import org.blojsom.plugin.pingback.event.PingbackResponseSubmissionEvent;
046:        import org.blojsom.plugin.response.event.ResponseSubmissionEvent;
047:        import org.blojsom.plugin.trackback.TrackbackModerationPlugin;
048:        import org.blojsom.plugin.trackback.TrackbackPlugin;
049:        import org.blojsom.plugin.trackback.event.TrackbackResponseSubmissionEvent;
050:        import org.blojsom.util.BlojsomUtils;
051:
052:        import javax.servlet.http.HttpServletRequest;
053:        import javax.servlet.http.HttpServletResponse;
054:        import java.io.BufferedReader;
055:        import java.io.IOException;
056:        import java.io.StringReader;
057:        import java.util.ArrayList;
058:        import java.util.Iterator;
059:        import java.util.List;
060:        import java.util.Map;
061:
062:        /**
063:         * IP address moderation plugin
064:         *
065:         * @author David Czarnecki
066:         * @version $Id: IPAddressModerationPlugin.java,v 1.2 2007/01/17 02:35:12 czarneckid Exp $
067:         * @since blojsom 3.0
068:         */
069:        public class IPAddressModerationPlugin implements  Plugin, Listener {
070:
071:            private Log _logger = LogFactory
072:                    .getLog(IPAddressModerationPlugin.class);
073:
074:            private static final String IP_BLACKLIST_IP = "ip-blacklist";
075:            private static final String IP_WHITELIST_IP = "ip-whitelist";
076:            private static final String DELETE_IPSPAM = "delete-ipspam";
077:            private static final boolean DEFAULT_DELETE_IPSPAM = false;
078:
079:            private EventBroadcaster _eventBroadcaster;
080:
081:            /**
082:             * Create a new instance of the IP address moderation plugin
083:             */
084:            public IPAddressModerationPlugin() {
085:            }
086:
087:            /**
088:             * Set the {@link EventBroadcaster}
089:             *
090:             * @param eventBroadcaster {@link EventBroadcaster}
091:             */
092:            public void setEventBroadcaster(EventBroadcaster eventBroadcaster) {
093:                _eventBroadcaster = eventBroadcaster;
094:            }
095:
096:            /**
097:             * Initialize this plugin. This method only called when the plugin is instantiated.
098:             *
099:             * @throws org.blojsom.plugin.PluginException
100:             *          If there is an error initializing the plugin
101:             */
102:            public void init() throws PluginException {
103:                _eventBroadcaster.addListener(this );
104:            }
105:
106:            /**
107:             * Process the blog entries
108:             *
109:             * @param httpServletRequest  Request
110:             * @param httpServletResponse Response
111:             * @param blog                {@link Blog} instance
112:             * @param context             Context
113:             * @param entries             Blog entries retrieved for the particular request
114:             * @return Modified set of blog entries
115:             * @throws PluginException If there is an error processing the blog entries
116:             */
117:            public Entry[] process(HttpServletRequest httpServletRequest,
118:                    HttpServletResponse httpServletResponse, Blog blog,
119:                    Map context, Entry[] entries) throws PluginException {
120:                return entries;
121:            }
122:
123:            /**
124:             * Perform any cleanup for the plugin. Called after {@link #process}.
125:             *
126:             * @throws org.blojsom.plugin.PluginException
127:             *          If there is an error performing cleanup for this plugin
128:             */
129:            public void cleanup() throws PluginException {
130:            }
131:
132:            /**
133:             * Called when BlojsomServlet is taken out of service
134:             *
135:             * @throws org.blojsom.plugin.PluginException
136:             *          If there is an error in finalizing this plugin
137:             */
138:            public void destroy() throws PluginException {
139:            }
140:
141:            /**
142:             * Handle an event broadcast from another component
143:             *
144:             * @param event {@link org.blojsom.event.Event} to be handled
145:             */
146:            public void handleEvent(Event event) {
147:            }
148:
149:            /**
150:             * Load the list of IP addresses from whitelist or blacklist from the blog properties
151:             *
152:             * @param blog {@link Blog}
153:             * @param property Whitelist or Blacklist property
154:             * @return List of IP addresses
155:             */
156:            protected List loadIPList(Blog blog, String property) {
157:                ArrayList ipAddresses = new ArrayList();
158:                String ipAddressValues = blog.getProperty(property);
159:
160:                if (!BlojsomUtils.checkNullOrBlank(ipAddressValues)) {
161:                    try {
162:                        BufferedReader br = new BufferedReader(
163:                                new StringReader(ipAddressValues));
164:                        String ipAddress;
165:
166:                        while ((ipAddress = br.readLine()) != null) {
167:                            ipAddresses.add(ipAddress);
168:                        }
169:
170:                        br.close();
171:                    } catch (IOException e) {
172:                        if (_logger.isErrorEnabled()) {
173:                            _logger.error(e);
174:                        }
175:                    }
176:                }
177:
178:                return ipAddresses;
179:            }
180:
181:            /**
182:             * Process an event from another component
183:             *
184:             * @param event {@link org.blojsom.event.Event} to be handled
185:             */
186:            public void processEvent(Event event) {
187:                if (event instanceof  ResponseSubmissionEvent) {
188:                    ResponseSubmissionEvent responseSubmissionEvent = (ResponseSubmissionEvent) event;
189:                    String requestIPAddress = responseSubmissionEvent
190:                            .getHttpServletRequest().getRemoteAddr();
191:
192:                    if (!BlojsomUtils.checkNullOrBlank(requestIPAddress)) {
193:                        boolean ipInWhitelist = false;
194:                        List ipAddresses = loadIPList(responseSubmissionEvent
195:                                .getBlog(), IP_WHITELIST_IP);
196:
197:                        if (ipAddresses.size() > 0) {
198:                            String ipAddress;
199:                            Iterator ipIterator = ipAddresses.iterator();
200:
201:                            while (ipIterator.hasNext()) {
202:                                ipAddress = (String) ipIterator.next();
203:                                if (requestIPAddress.matches(ipAddress)
204:                                        || requestIPAddress.indexOf(ipAddress) != -1) {
205:                                    if (_logger.isDebugEnabled()) {
206:                                        _logger
207:                                                .debug("IP address found in whitelist: "
208:                                                        + requestIPAddress);
209:                                    }
210:
211:                                    ipInWhitelist = true;
212:                                    break;
213:                                }
214:                            }
215:                        } else {
216:                            if (_logger.isDebugEnabled()) {
217:                                _logger
218:                                        .debug("IP address whitelist not populated");
219:                            }
220:                        }
221:
222:                        ipAddresses = loadIPList(responseSubmissionEvent
223:                                .getBlog(), IP_BLACKLIST_IP);
224:                        if (ipAddresses.size() > 0 && !ipInWhitelist) {
225:                            String ipAddress;
226:                            Iterator ipIterator = ipAddresses.iterator();
227:
228:                            boolean deleteIPSpam = DEFAULT_DELETE_IPSPAM;
229:                            Map metaData = responseSubmissionEvent
230:                                    .getMetaData();
231:
232:                            String deleteIPSpamValue = responseSubmissionEvent
233:                                    .getBlog().getProperty(DELETE_IPSPAM);
234:                            if (!BlojsomUtils
235:                                    .checkNullOrBlank(deleteIPSpamValue)) {
236:                                deleteIPSpam = Boolean.valueOf(
237:                                        deleteIPSpamValue).booleanValue();
238:                            }
239:
240:                            boolean ipSpamFound = false;
241:                            while (ipIterator.hasNext()) {
242:                                ipAddress = (String) ipIterator.next();
243:                                if (requestIPAddress.matches(ipAddress)
244:                                        || requestIPAddress.indexOf(ipAddress) != -1) {
245:                                    if (_logger.isDebugEnabled()) {
246:                                        _logger
247:                                                .debug("IP address found in blacklist: "
248:                                                        + requestIPAddress);
249:                                    }
250:
251:                                    ipSpamFound = true;
252:                                    break;
253:                                }
254:                            }
255:
256:                            if (ipSpamFound) {
257:                                if (!deleteIPSpam) {
258:                                    if (_logger.isDebugEnabled()) {
259:                                        _logger
260:                                                .debug("Marking response for moderation");
261:                                    }
262:                                } else {
263:                                    if (_logger.isDebugEnabled()) {
264:                                        _logger
265:                                                .debug("Marking response for automatic deletion");
266:                                    }
267:                                }
268:
269:                                if (responseSubmissionEvent instanceof  CommentResponseSubmissionEvent) {
270:                                    if (!deleteIPSpam) {
271:                                        metaData
272:                                                .put(
273:                                                        CommentModerationPlugin.BLOJSOM_COMMENT_MODERATION_PLUGIN_APPROVED,
274:                                                        Boolean.FALSE
275:                                                                .toString());
276:                                    } else {
277:                                        metaData
278:                                                .put(
279:                                                        CommentPlugin.BLOJSOM_PLUGIN_COMMENT_METADATA_DESTROY,
280:                                                        Boolean.TRUE);
281:                                    }
282:                                } else if (responseSubmissionEvent instanceof  TrackbackResponseSubmissionEvent) {
283:                                    if (!deleteIPSpam) {
284:                                        metaData
285:                                                .put(
286:                                                        TrackbackModerationPlugin.BLOJSOM_TRACKBACK_MODERATION_PLUGIN_APPROVED,
287:                                                        Boolean.FALSE
288:                                                                .toString());
289:                                    } else {
290:                                        metaData
291:                                                .put(
292:                                                        TrackbackPlugin.BLOJSOM_PLUGIN_TRACKBACK_METADATA_DESTROY,
293:                                                        Boolean.TRUE);
294:                                    }
295:                                } else if (responseSubmissionEvent instanceof  PingbackResponseSubmissionEvent) {
296:                                    if (deleteIPSpam) {
297:                                        metaData
298:                                                .put(
299:                                                        PingbackPlugin.BLOJSOM_PLUGIN_PINGBACK_METADATA_DESTROY,
300:                                                        Boolean.TRUE);
301:                                    }
302:                                }
303:                            }
304:                        } else {
305:                            if (_logger.isDebugEnabled()) {
306:                                _logger
307:                                        .debug("IP address blacklist not populated");
308:                            }
309:                        }
310:                    } else {
311:                        if (_logger.isDebugEnabled()) {
312:                            _logger.debug("IP address not available");
313:                        }
314:                    }
315:                }
316:            }
317:        }
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