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