001
014
015 package com.liferay.portlet.blogs.action;
016
017 import com.liferay.portal.kernel.log.Log;
018 import com.liferay.portal.kernel.log.LogFactoryUtil;
019 import com.liferay.portal.kernel.servlet.ServletResponseUtil;
020 import com.liferay.portal.kernel.util.ContentTypes;
021 import com.liferay.portal.kernel.util.GetterUtil;
022 import com.liferay.portal.kernel.util.HttpUtil;
023 import com.liferay.portal.kernel.util.ParamUtil;
024 import com.liferay.portal.kernel.util.StringBundler;
025 import com.liferay.portal.kernel.util.StringPool;
026 import com.liferay.portal.kernel.util.Validator;
027 import com.liferay.portal.kernel.workflow.WorkflowConstants;
028 import com.liferay.portal.security.auth.PrincipalException;
029 import com.liferay.portal.service.ServiceContext;
030 import com.liferay.portal.service.ServiceContextFactory;
031 import com.liferay.portal.service.UserLocalServiceUtil;
032 import com.liferay.portal.struts.ActionConstants;
033 import com.liferay.portal.struts.PortletAction;
034 import com.liferay.portal.theme.ThemeDisplay;
035 import com.liferay.portal.util.Portal;
036 import com.liferay.portal.util.PortalUtil;
037 import com.liferay.portal.util.WebKeys;
038 import com.liferay.portlet.PortletPreferencesFactoryUtil;
039 import com.liferay.portlet.blogs.NoSuchEntryException;
040 import com.liferay.portlet.blogs.model.BlogsEntry;
041 import com.liferay.portlet.blogs.util.LinkbackConsumerUtil;
042 import com.liferay.portlet.messageboards.model.MBMessage;
043 import com.liferay.portlet.messageboards.model.MBMessageDisplay;
044 import com.liferay.portlet.messageboards.model.MBThread;
045 import com.liferay.portlet.messageboards.service.MBMessageLocalServiceUtil;
046
047 import javax.portlet.ActionRequest;
048 import javax.portlet.ActionResponse;
049 import javax.portlet.PortletConfig;
050 import javax.portlet.PortletPreferences;
051
052 import javax.servlet.http.HttpServletRequest;
053 import javax.servlet.http.HttpServletResponse;
054
055 import org.apache.struts.action.ActionForm;
056 import org.apache.struts.action.ActionMapping;
057
058
061 public class TrackbackAction extends PortletAction {
062
063 @Override
064 public void processAction(
065 ActionMapping actionMapping, ActionForm actionForm,
066 PortletConfig portletConfig, ActionRequest actionRequest,
067 ActionResponse actionResponse)
068 throws Exception {
069
070 try {
071 addTrackback(actionRequest, actionResponse);
072 }
073 catch (NoSuchEntryException nsee) {
074 if (_log.isWarnEnabled()) {
075 _log.warn(nsee, nsee);
076 }
077 }
078 catch (Exception e) {
079 _log.error(e, e);
080 }
081
082 setForward(actionRequest, ActionConstants.COMMON_NULL);
083 }
084
085 protected void addTrackback(
086 ActionRequest actionRequest, ActionResponse actionResponse)
087 throws Exception {
088
089 ThemeDisplay themeDisplay = (ThemeDisplay)actionRequest.getAttribute(
090 WebKeys.THEME_DISPLAY);
091
092 HttpServletRequest request = PortalUtil.getHttpServletRequest(
093 actionRequest);
094
095 HttpServletRequest originalRequest =
096 PortalUtil.getOriginalServletRequest(request);
097
098 String title = ParamUtil.getString(originalRequest, "title");
099 String excerpt = ParamUtil.getString(originalRequest, "excerpt");
100 String url = ParamUtil.getString(originalRequest, "url");
101 String blogName = ParamUtil.getString(originalRequest, "blog_name");
102
103 if (!isCommentsEnabled(actionRequest)) {
104 sendError(
105 actionRequest, actionResponse,
106 "Comments have been disabled for this blog entry.");
107
108 return;
109 }
110
111 if (Validator.isNull(url)) {
112 sendError(
113 actionRequest, actionResponse,
114 "Trackback requires a valid permanent URL.");
115
116 return;
117 }
118
119 String remoteIp = request.getRemoteAddr();
120
121 String trackbackIp = HttpUtil.getIpAddress(url);
122
123 if (!remoteIp.equals(trackbackIp)) {
124 sendError(
125 actionRequest, actionResponse,
126 "Remote IP " + remoteIp +
127 " does not match trackback URL's IP " + trackbackIp + ".");
128
129 return;
130 }
131
132 try {
133 ActionUtil.getEntry(actionRequest);
134 }
135 catch (PrincipalException pe) {
136 sendError(
137 actionRequest, actionResponse,
138 "Blog entry must have guest view permissions to enable " +
139 "trackbacks.");
140
141 return;
142 }
143
144 BlogsEntry entry = (BlogsEntry)actionRequest.getAttribute(
145 WebKeys.BLOGS_ENTRY);
146
147 if (!entry.isAllowTrackbacks()) {
148 sendError(
149 actionRequest, actionResponse,
150 "Trackbacks are not enabled on this blog entry.");
151
152 return;
153 }
154
155 long userId = UserLocalServiceUtil.getDefaultUserId(
156 themeDisplay.getCompanyId());
157 long groupId = entry.getGroupId();
158 String className = BlogsEntry.class.getName();
159 long classPK = entry.getEntryId();
160
161 MBMessageDisplay messageDisplay =
162 MBMessageLocalServiceUtil.getDiscussionMessageDisplay(
163 userId, groupId, className, classPK,
164 WorkflowConstants.STATUS_APPROVED);
165
166 MBThread thread = messageDisplay.getThread();
167
168 long threadId = thread.getThreadId();
169 long parentMessageId = thread.getRootMessageId();
170 String body =
171 "[...] " + excerpt + " [...] [url=" + url + "]" +
172 themeDisplay.translate("read-more") + "[/url]";
173
174 ServiceContext serviceContext = ServiceContextFactory.getInstance(
175 MBMessage.class.getName(), actionRequest);
176
177 MBMessage message = MBMessageLocalServiceUtil.addDiscussionMessage(
178 userId, blogName, groupId, className, classPK, threadId,
179 parentMessageId, title, body, serviceContext);
180
181 String entryURL =
182 PortalUtil.getLayoutFullURL(themeDisplay) +
183 Portal.FRIENDLY_URL_SEPARATOR + "blogs/" + entry.getUrlTitle();
184
185 LinkbackConsumerUtil.addNewTrackback(
186 message.getMessageId(), url, entryURL);
187
188 sendSuccess(actionRequest, actionResponse);
189 }
190
191 @Override
192 protected boolean isCheckMethodOnProcessAction() {
193 return _CHECK_METHOD_ON_PROCESS_ACTION;
194 }
195
196 protected boolean isCommentsEnabled(ActionRequest actionRequest)
197 throws Exception {
198
199 PortletPreferences portletPreferences = actionRequest.getPreferences();
200
201 String portletResource = ParamUtil.getString(
202 actionRequest, "portletResource");
203
204 if (Validator.isNotNull(portletResource)) {
205 portletPreferences = PortletPreferencesFactoryUtil.getPortletSetup(
206 actionRequest, portletResource);
207 }
208
209 return GetterUtil.getBoolean(
210 portletPreferences.getValue("enableComments", null), true);
211 }
212
213 protected void sendError(
214 ActionRequest actionRequest, ActionResponse actionResponse,
215 String msg)
216 throws Exception {
217
218 sendResponse(actionRequest, actionResponse, msg, false);
219 }
220
221 protected void sendResponse(
222 ActionRequest actionRequest, ActionResponse actionResponse,
223 String msg, boolean success)
224 throws Exception {
225
226 StringBundler sb = new StringBundler(7);
227
228 sb.append("<?xml version=\"1.0\" encoding=\"utf-8\"?>");
229 sb.append("<response>");
230
231 if (success) {
232 sb.append("<error>0</error>");
233 }
234 else {
235 sb.append("<error>1</error>");
236 sb.append("<message>");
237 sb.append(msg);
238 sb.append("</message>");
239 }
240
241 sb.append("</response>");
242
243 HttpServletRequest request = PortalUtil.getHttpServletRequest(
244 actionRequest);
245 HttpServletResponse response = PortalUtil.getHttpServletResponse(
246 actionResponse);
247
248 ServletResponseUtil.sendFile(
249 request, response, null, sb.toString().getBytes(StringPool.UTF8),
250 ContentTypes.TEXT_XML_UTF8);
251 }
252
253 protected void sendSuccess(
254 ActionRequest actionRequest, ActionResponse actionResponse)
255 throws Exception {
256
257 sendResponse(actionRequest, actionResponse, null, true);
258 }
259
260 private static final boolean _CHECK_METHOD_ON_PROCESS_ACTION = false;
261
262 private static Log _log = LogFactoryUtil.getLog(TrackbackAction.class);
263
264 }