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