1
14
15 package com.liferay.portlet.blogs.action;
16
17 import com.liferay.portal.kernel.log.Log;
18 import com.liferay.portal.kernel.log.LogFactoryUtil;
19 import com.liferay.portal.kernel.util.ContentTypes;
20 import com.liferay.portal.kernel.util.GetterUtil;
21 import com.liferay.portal.kernel.util.HttpUtil;
22 import com.liferay.portal.kernel.util.ParamUtil;
23 import com.liferay.portal.kernel.util.StringBundler;
24 import com.liferay.portal.kernel.util.StringPool;
25 import com.liferay.portal.kernel.util.Validator;
26 import com.liferay.portal.kernel.workflow.WorkflowConstants;
27 import com.liferay.portal.security.auth.PrincipalException;
28 import com.liferay.portal.service.ServiceContext;
29 import com.liferay.portal.service.ServiceContextFactory;
30 import com.liferay.portal.service.UserLocalServiceUtil;
31 import com.liferay.portal.struts.ActionConstants;
32 import com.liferay.portal.struts.PortletAction;
33 import com.liferay.portal.theme.ThemeDisplay;
34 import com.liferay.portal.util.Portal;
35 import com.liferay.portal.util.PortalUtil;
36 import com.liferay.portal.util.WebKeys;
37 import com.liferay.portlet.PortletPreferencesFactoryUtil;
38 import com.liferay.portlet.blogs.NoSuchEntryException;
39 import com.liferay.portlet.blogs.model.BlogsEntry;
40 import com.liferay.portlet.blogs.util.LinkbackConsumerUtil;
41 import com.liferay.portlet.messageboards.model.MBMessage;
42 import com.liferay.portlet.messageboards.model.MBMessageDisplay;
43 import com.liferay.portlet.messageboards.model.MBThread;
44 import com.liferay.portlet.messageboards.service.MBMessageLocalServiceUtil;
45 import com.liferay.util.servlet.ServletResponseUtil;
46
47 import javax.portlet.ActionRequest;
48 import javax.portlet.ActionResponse;
49 import javax.portlet.PortletConfig;
50 import javax.portlet.PortletPreferences;
51
52 import javax.servlet.http.HttpServletRequest;
53 import javax.servlet.http.HttpServletResponse;
54
55 import org.apache.struts.action.ActionForm;
56 import org.apache.struts.action.ActionMapping;
57
58
63 public class TrackbackAction extends PortletAction {
64
65 public void processAction(
66 ActionMapping mapping, ActionForm form, PortletConfig portletConfig,
67 ActionRequest actionRequest, ActionResponse actionResponse)
68 throws Exception {
69
70 try {
71 addTrackback(actionRequest, actionResponse);
72 }
73 catch (NoSuchEntryException nsee) {
74 if (_log.isWarnEnabled()) {
75 _log.warn(nsee, nsee);
76 }
77 }
78 catch (Exception e) {
79 _log.error(e, e);
80 }
81
82 setForward(actionRequest, ActionConstants.COMMON_NULL);
83 }
84
85 protected void addTrackback(
86 ActionRequest actionRequest, ActionResponse actionResponse)
87 throws Exception {
88
89 ThemeDisplay themeDisplay = (ThemeDisplay)actionRequest.getAttribute(
90 WebKeys.THEME_DISPLAY);
91
92 String title = ParamUtil.getString(actionRequest, "title");
93 String excerpt = ParamUtil.getString(actionRequest, "excerpt");
94 String url = ParamUtil.getString(actionRequest, "url");
95 String blogName = ParamUtil.getString(actionRequest, "blog_name");
96
97 if (!isCommentsEnabled(actionRequest)) {
98 sendError(
99 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 null, 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/" +
181 entry.getUrlTitle();
182
183 LinkbackConsumerUtil.addNewTrackback(
184 message.getMessageId(), url, entryURL);
185
186 sendSuccess(actionRequest, actionResponse);
187 }
188
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("enable-comments", 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 }