/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. The ASF licenses this file to You
* under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License. For additional information regarding
* copyright in this work, please see the NOTICE file in the top level
* directory of this distribution.
*/
package org.apache.roller.ui.rendering.util;
import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;
import javax.servlet.http.HttpServletRequest;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.roller.RollerException;
import org.apache.roller.business.RollerFactory;
import org.apache.roller.business.WeblogManager;
import org.apache.roller.pojos.WeblogEntryData;
/**
* Represents a request to post a weblog entry trackback.
*/
public class WeblogTrackbackRequest extends WeblogRequest {
private static Log log = LogFactory.getLog(WeblogTrackbackRequest.class);
private static final String TRACKBACK_SERVLET = "/roller-ui/rendering/trackback";
// lightweight attributes
private String blogName = null;
private String url = null;
private String excerpt = null;
private String title = null;
private String weblogAnchor = null;
// heavyweight attributes
private WeblogEntryData weblogEntry = null;
public WeblogTrackbackRequest() {}
public WeblogTrackbackRequest(HttpServletRequest request)
throws InvalidRequestException {
// let our parent take care of their business first
// parent determines weblog handle and locale if specified
super(request);
String servlet = request.getServletPath();
// we only want the path info left over from after our parents parsing
String pathInfo = this.getPathInfo();
// was this request bound for the comment servlet?
if(servlet == null || !TRACKBACK_SERVLET.equals(servlet)) {
throw new InvalidRequestException("not a weblog trackback request, "+
request.getRequestURL());
}
/*
* parse path info. we expect ...
*
* /entry/<anchor> - permalink
*/
if(pathInfo != null && pathInfo.trim().length() > 0) {
// we should only ever get 2 path elements
String[] pathElements = pathInfo.split("/");
if(pathElements.length == 2) {
String context = pathElements[0];
if("entry".equals(context)) {
try {
this.weblogAnchor =
URLDecoder.decode(pathElements[1], "UTF-8");
} catch (UnsupportedEncodingException ex) {
// should never happen
log.error(ex);
}
} else {
throw new InvalidRequestException("bad path info, "+
request.getRequestURL());
}
} else {
throw new InvalidRequestException("bad path info, "+
request.getRequestURL());
}
} else {
// bad request
throw new InvalidRequestException("bad path info, "+
request.getRequestURL());
}
/*
* parse request parameters
*
* the only params we currently care about are:
* blog_name - comment author
* url - comment referring url
* excerpt - comment contents
* title - comment title
*/
if(request.getParameter("blog_name") != null) {
this.blogName = request.getParameter("blog_name");
}
if(request.getParameter("url") != null) {
this.url = request.getParameter("url");
}
if(request.getParameter("excerpt") != null) {
this.excerpt = request.getParameter("excerpt");
}
if(request.getParameter("title") != null) {
this.title = request.getParameter("title");
}
// a little bit of validation, trackbacks enforce that all params
// must have a value, so any nulls equals a bad request
if(this.blogName == null || this.url == null ||
this.excerpt == null || this.title == null) {
throw new InvalidRequestException("bad request data. did not "+
"receive values for all trackback params (blog_name, url, excerpt, title)");
}
if(log.isDebugEnabled()) {
log.debug("name = "+this.blogName);
log.debug("url = "+this.url);
log.debug("excerpt = "+this.excerpt);
log.debug("title = "+this.title);
log.debug("weblogAnchor = "+this.weblogAnchor);
}
}
public String getBlogName() {
return blogName;
}
public void setBlogName(String blogName) {
this.blogName = blogName;
}
public String getUrl() {
return url;
}
public void setUrl(String url) {
this.url = url;
}
public String getExcerpt() {
return excerpt;
}
public void setExcerpt(String excerpt) {
this.excerpt = excerpt;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getWeblogAnchor() {
return weblogAnchor;
}
public void setWeblogAnchor(String weblogAnchor) {
this.weblogAnchor = weblogAnchor;
}
public WeblogEntryData getWeblogEntry() {
if(weblogEntry == null && weblogAnchor != null) {
try {
WeblogManager wmgr = RollerFactory.getRoller().getWeblogManager();
weblogEntry = wmgr.getWeblogEntryByAnchor(getWeblog(), weblogAnchor);
} catch (RollerException ex) {
log.error("Error getting weblog entry "+weblogAnchor, ex);
}
}
return weblogEntry;
}
public void setWeblogEntry(WeblogEntryData weblogEntry) {
this.weblogEntry = weblogEntry;
}
}