mirror of
https://github.com/yacy/yacy_search_server.git
synced 2024-09-19 00:01:41 +02:00
5f0ab25382
MultiProtocolURI during normalform computation because that should always be done and also be done during initialization of the MultiProtocolURI Object. The new normalform method takes only one argument which should be 'true' unless you know exactly what you are doing.
241 lines
9.0 KiB
Java
241 lines
9.0 KiB
Java
// getpageinfo_p
|
|
// (C) 2011 by Michael Peter Christen; mc@yacy.net, Frankfurt a. M., Germany
|
|
// first published 11.11.2011 on http://yacy.net
|
|
//
|
|
// This is a part of YaCy, a peer-to-peer based web search engine
|
|
//
|
|
// $LastChangedDate$
|
|
// $LastChangedRevision$
|
|
// $LastChangedBy$
|
|
//
|
|
// LICENSE
|
|
//
|
|
// This program is free software; you can redistribute it and/or modify
|
|
// it under the terms of the GNU General Public License as published by
|
|
// the Free Software Foundation; either version 2 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// This program is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU General Public License
|
|
// along with this program; if not, write to the Free Software
|
|
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
|
|
import java.io.IOException;
|
|
import java.net.MalformedURLException;
|
|
import java.util.Set;
|
|
|
|
import javax.xml.parsers.DocumentBuilder;
|
|
import javax.xml.parsers.DocumentBuilderFactory;
|
|
import javax.xml.parsers.ParserConfigurationException;
|
|
|
|
import net.yacy.cora.document.MultiProtocolURI;
|
|
import net.yacy.cora.federate.yacy.CacheStrategy;
|
|
import net.yacy.cora.protocol.RequestHeader;
|
|
import net.yacy.crawler.data.CrawlQueues;
|
|
import net.yacy.crawler.robots.RobotsTxtEntry;
|
|
import net.yacy.kelondro.data.meta.DigestURI;
|
|
import net.yacy.kelondro.logging.Log;
|
|
import net.yacy.repository.Blacklist.BlacklistType;
|
|
import net.yacy.search.Switchboard;
|
|
import net.yacy.server.serverObjects;
|
|
import net.yacy.server.serverSwitch;
|
|
|
|
import org.w3c.dom.Document;
|
|
import org.w3c.dom.Node;
|
|
import org.w3c.dom.NodeList;
|
|
import org.xml.sax.SAXException;
|
|
|
|
|
|
public class getpageinfo_p {
|
|
|
|
public static serverObjects respond(@SuppressWarnings("unused") final RequestHeader header, final serverObjects post, final serverSwitch env) {
|
|
final Switchboard sb = (Switchboard) env;
|
|
final serverObjects prop = new serverObjects();
|
|
|
|
// avoid UNRESOLVED PATTERN
|
|
prop.put("title", "");
|
|
prop.put("desc", "");
|
|
prop.put("lang", "");
|
|
prop.put("robots-allowed", "3"); //unknown
|
|
prop.put("robotsInfo", ""); //unknown
|
|
prop.put("sitemap", "");
|
|
prop.put("favicon","");
|
|
prop.put("sitelist", "");
|
|
prop.put("filter", ".*");
|
|
prop.put("oai", 0);
|
|
|
|
// default actions
|
|
String actions = "title,robots";
|
|
|
|
if (post != null && post.containsKey("url")) {
|
|
if (post.containsKey("actions"))
|
|
actions=post.get("actions");
|
|
String url=post.get("url");
|
|
if (url.toLowerCase().startsWith("ftp://")) {
|
|
prop.put("robots-allowed", "1"); // ok to crawl
|
|
prop.put("robotsInfo", "ftp does not follow robots.txt");
|
|
prop.putXML("title", "FTP: " + url);
|
|
return prop;
|
|
} else if (!url.startsWith("http://") &&
|
|
!url.startsWith("https://") &&
|
|
!url.startsWith("ftp://") &&
|
|
!url.startsWith("smb://") &&
|
|
!url.startsWith("file://")) {
|
|
url = "http://" + url;
|
|
}
|
|
if (actions.indexOf("title",0) >= 0) {
|
|
DigestURI u = null;
|
|
try {
|
|
u = new DigestURI(url);
|
|
} catch (final MalformedURLException e) {
|
|
Log.logException(e);
|
|
}
|
|
net.yacy.document.Document scraper = null;
|
|
if (u != null) try {
|
|
scraper = sb.loader.loadDocument(u, CacheStrategy.IFEXIST, BlacklistType.CRAWLER, CrawlQueues.queuedMinLoadDelay);
|
|
} catch (final IOException e) {
|
|
Log.logException(e);
|
|
// bad things are possible, i.e. that the Server responds with "403 Bad Behavior"
|
|
// that should not affect the robots.txt validity
|
|
}
|
|
if (scraper != null) {
|
|
// put the document title
|
|
prop.putXML("title", scraper.dc_title());
|
|
|
|
// put the favicon that belongs to the document
|
|
prop.put("favicon", (scraper.getFavicon()==null) ? "" : scraper.getFavicon().toString());
|
|
|
|
// put keywords
|
|
final String list[] = scraper.dc_subject();
|
|
int count = 0;
|
|
for (final String element: list) {
|
|
final String tag = element;
|
|
if (!tag.equals("")) {
|
|
prop.putXML("tags_"+count+"_tag", tag);
|
|
count++;
|
|
}
|
|
}
|
|
prop.put("tags", count);
|
|
// put description
|
|
prop.putXML("desc", scraper.dc_description());
|
|
// put language
|
|
final Set<String> languages = scraper.getContentLanguages();
|
|
prop.putXML("lang", (languages == null || languages.size() == 0) ? "unknown" : languages.iterator().next());
|
|
|
|
// get links and put them into a semicolon-separated list
|
|
final Set<MultiProtocolURI> uris = scraper.getAnchors().keySet();
|
|
final StringBuilder links = new StringBuilder(uris.size() * 80);
|
|
final StringBuilder filter = new StringBuilder(uris.size() * 40);
|
|
count = 0;
|
|
for (final MultiProtocolURI uri: uris) {
|
|
if (uri == null) continue;
|
|
links.append(';').append(uri.toNormalform(true));
|
|
filter.append('|').append(uri.getProtocol()).append("://").append(uri.getHost()).append(".*");
|
|
prop.putXML("links_" + count + "_link", uri.toNormalform(true));
|
|
count++;
|
|
}
|
|
prop.put("links", count);
|
|
prop.putXML("sitelist", links.length() > 0 ? links.substring(1) : "");
|
|
prop.putXML("filter", filter.length() > 0 ? filter.substring(1) : ".*");
|
|
}
|
|
}
|
|
if (actions.indexOf("robots",0) >= 0) {
|
|
try {
|
|
final DigestURI theURL = new DigestURI(url);
|
|
|
|
// determine if crawling of the current URL is allowed
|
|
RobotsTxtEntry robotsEntry;
|
|
try {
|
|
robotsEntry = sb.robots.getEntry(theURL, sb.peers.myBotIDs());
|
|
} catch (final IOException e) {
|
|
robotsEntry = null;
|
|
Log.logException(e);
|
|
}
|
|
prop.put("robots-allowed", robotsEntry == null ? 1 : robotsEntry.isDisallowed(theURL) ? 0 : 1);
|
|
prop.putHTML("robotsInfo", robotsEntry == null ? "" : robotsEntry.getInfo());
|
|
|
|
// get the sitemap URL of the domain
|
|
final MultiProtocolURI sitemapURL = robotsEntry == null ? null : robotsEntry.getSitemap();
|
|
prop.putXML("sitemap", sitemapURL == null ? "" : sitemapURL.toString());
|
|
} catch (final MalformedURLException e) {
|
|
Log.logException(e);
|
|
}
|
|
}
|
|
if (actions.indexOf("oai",0) >= 0) {
|
|
try {
|
|
final DigestURI theURL = new DigestURI(url
|
|
+ "?verb=Identify");
|
|
|
|
final String oairesult = checkOAI(theURL.toString());
|
|
|
|
prop.put("oai", oairesult == "" ? 0 : 1);
|
|
|
|
if (oairesult != "") {
|
|
prop.putXML("title", oairesult);
|
|
}
|
|
|
|
} catch (final MalformedURLException e) {
|
|
}
|
|
}
|
|
|
|
}
|
|
// return rewrite properties
|
|
return prop;
|
|
}
|
|
|
|
private static String checkOAI(final String url) {
|
|
final DocumentBuilderFactory factory = DocumentBuilderFactory
|
|
.newInstance();
|
|
try {
|
|
final DocumentBuilder builder = factory.newDocumentBuilder();
|
|
return parseXML(builder.parse(url));
|
|
} catch (final ParserConfigurationException ex) {
|
|
Log.logException(ex);
|
|
} catch (final SAXException ex) {
|
|
Log.logException(ex);
|
|
} catch (final IOException ex) {
|
|
Log.logException(ex);
|
|
}
|
|
|
|
return "";
|
|
}
|
|
|
|
private static String parseXML(final Document doc) {
|
|
|
|
String repositoryName = null;
|
|
|
|
final NodeList items = doc.getDocumentElement().getElementsByTagName(
|
|
"Identify");
|
|
if (items.getLength() == 0) {
|
|
return "";
|
|
}
|
|
|
|
for (int i = 0, n = items.getLength(); i < n; ++i) {
|
|
|
|
if (!"Identify".equals(items.item(i).getNodeName()))
|
|
continue;
|
|
|
|
final NodeList currentNodeChildren = items.item(i).getChildNodes();
|
|
|
|
for (int j = 0, m = currentNodeChildren.getLength(); j < m; ++j) {
|
|
final Node currentNode = currentNodeChildren.item(j);
|
|
if ("repositoryName".equals(currentNode.getNodeName())) {
|
|
repositoryName = currentNode.getFirstChild().getNodeValue();
|
|
}
|
|
}
|
|
|
|
if (repositoryName == null) {
|
|
return "";
|
|
}
|
|
|
|
}
|
|
return repositoryName;
|
|
}
|
|
|
|
|
|
}
|