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.StatusConstants;
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 String className = BlogsEntry.class.getName();
155 long classPK = entry.getEntryId();
156
157 ServiceContext serviceContext = ServiceContextFactory.getInstance(
158 MBMessage.class.getName(), actionRequest);
159
160 MBMessageDisplay messageDisplay =
161 MBMessageLocalServiceUtil.getDiscussionMessageDisplay(
162 userId, className, classPK, StatusConstants.APPROVED);
163
164 MBThread thread = messageDisplay.getThread();
165
166 long threadId = thread.getThreadId();
167 long parentMessageId = thread.getRootMessageId();
168 String body =
169 "[...] " + excerpt + " [...] [url=" + url + "]" +
170 themeDisplay.translate("read-more") + "[/url]";
171
172 MBMessage message = MBMessageLocalServiceUtil.addDiscussionMessage(
173 userId, blogName, className, classPK, threadId, parentMessageId,
174 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 }