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 String title = ParamUtil.getString(actionRequest, "title");
093 String excerpt = ParamUtil.getString(actionRequest, "excerpt");
094 String url = ParamUtil.getString(actionRequest, "url");
095 String blogName = ParamUtil.getString(actionRequest, "blog_name");
096
097 if (!isCommentsEnabled(actionRequest)) {
098 sendError(
099 actionRequest, actionResponse,
100 "Comments have been disabled for this blog entry.");
101
102 return;
103 }
104
105 if (Validator.isNull(url)) {
106 sendError(
107 actionRequest, actionResponse,
108 "Trackback requires a valid permanent URL.");
109
110 return;
111 }
112
113 HttpServletRequest request = PortalUtil.getHttpServletRequest(
114 actionRequest);
115
116 String remoteIp = request.getRemoteAddr();
117
118 String trackbackIp = HttpUtil.getIpAddress(url);
119
120 if (!remoteIp.equals(trackbackIp)) {
121 sendError(
122 actionRequest, actionResponse,
123 "Remote IP " + remoteIp +
124 " does not match trackback URL's IP " + trackbackIp + ".");
125
126 return;
127 }
128
129 try {
130 ActionUtil.getEntry(actionRequest);
131 }
132 catch (PrincipalException pe) {
133 sendError(
134 actionRequest, actionResponse,
135 "Blog entry must have guest view permissions to enable " +
136 "trackbacks.");
137
138 return;
139 }
140
141 BlogsEntry entry = (BlogsEntry)actionRequest.getAttribute(
142 WebKeys.BLOGS_ENTRY);
143
144 if (!entry.isAllowTrackbacks()) {
145 sendError(
146 actionRequest, actionResponse,
147 "Trackbacks are not enabled on this blog entry.");
148
149 return;
150 }
151
152 long userId = UserLocalServiceUtil.getDefaultUserId(
153 themeDisplay.getCompanyId());
154 long groupId = entry.getGroupId();
155 String className = BlogsEntry.class.getName();
156 long classPK = entry.getEntryId();
157
158 MBMessageDisplay messageDisplay =
159 MBMessageLocalServiceUtil.getDiscussionMessageDisplay(
160 userId, groupId, className, classPK,
161 WorkflowConstants.STATUS_APPROVED);
162
163 MBThread thread = messageDisplay.getThread();
164
165 long threadId = thread.getThreadId();
166 long parentMessageId = thread.getRootMessageId();
167 String body =
168 "[...] " + excerpt + " [...] [url=" + url + "]" +
169 themeDisplay.translate("read-more") + "[/url]";
170
171 ServiceContext serviceContext = ServiceContextFactory.getInstance(
172 MBMessage.class.getName(), actionRequest);
173
174 MBMessage message = MBMessageLocalServiceUtil.addDiscussionMessage(
175 userId, blogName, groupId, className, classPK, threadId,
176 parentMessageId, title, body, serviceContext);
177
178 String entryURL =
179 PortalUtil.getLayoutFullURL(themeDisplay) +
180 Portal.FRIENDLY_URL_SEPARATOR + "blogs/" + entry.getUrlTitle();
181
182 LinkbackConsumerUtil.addNewTrackback(
183 message.getMessageId(), url, entryURL);
184
185 sendSuccess(actionRequest, actionResponse);
186 }
187
188 @Override
189 protected boolean isCheckMethodOnProcessAction() {
190 return _CHECK_METHOD_ON_PROCESS_ACTION;
191 }
192
193 protected boolean isCommentsEnabled(ActionRequest actionRequest)
194 throws Exception {
195
196 PortletPreferences preferences = actionRequest.getPreferences();
197
198 String portletResource = ParamUtil.getString(
199 actionRequest, "portletResource");
200
201 if (Validator.isNotNull(portletResource)) {
202 preferences = PortletPreferencesFactoryUtil.getPortletSetup(
203 actionRequest, portletResource);
204 }
205
206 return GetterUtil.getBoolean(
207 preferences.getValue("enableComments", null), true);
208 }
209
210 protected void sendError(
211 ActionRequest actionRequest, ActionResponse actionResponse,
212 String msg)
213 throws Exception {
214
215 sendResponse(actionRequest, actionResponse, msg, false);
216 }
217
218 protected void sendResponse(
219 ActionRequest actionRequest, ActionResponse actionResponse,
220 String msg, boolean success)
221 throws Exception {
222
223 StringBundler sb = new StringBundler(7);
224
225 sb.append("<?xml version=\"1.0\" encoding=\"utf-8\"?>");
226 sb.append("<response>");
227
228 if (success) {
229 sb.append("<error>0</error>");
230 }
231 else {
232 sb.append("<error>1</error>");
233 sb.append("<message>");
234 sb.append(msg);
235 sb.append("</message>");
236 }
237
238 sb.append("</response>");
239
240 HttpServletRequest request = PortalUtil.getHttpServletRequest(
241 actionRequest);
242 HttpServletResponse response = PortalUtil.getHttpServletResponse(
243 actionResponse);
244
245 ServletResponseUtil.sendFile(
246 request, response, null, sb.toString().getBytes(StringPool.UTF8),
247 ContentTypes.TEXT_XML_UTF8);
248 }
249
250 protected void sendSuccess(
251 ActionRequest actionRequest, ActionResponse actionResponse)
252 throws Exception {
253
254 sendResponse(actionRequest, actionResponse, null, true);
255 }
256
257 private static final boolean _CHECK_METHOD_ON_PROCESS_ACTION = false;
258
259 private static Log _log = LogFactoryUtil.getLog(TrackbackAction.class);
260
261 }