yacy_search_server/htroot/QuickCrawlLink_p.java

//QuickCrawlLink_p.java
//-----------------------
//part of the AnomicHTTPD caching proxy
//(C) by Michael Peter Christen; mc@yacy.net
//first published on http://www.anomic.de
//Frankfurt, Germany, 2004
//
//This file was contributed by Martin Thelian
//$LastChangedDate$ 
//$LastChangedBy$
//$LastChangedRevision$
//
//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

//You must compile this file with
//javac -classpath .:../classes IndexCreate_p.java
//if the shell's current path is HTROOT


import java.io.UnsupportedEncodingException;
import java.net.MalformedURLException;
import java.net.URLDecoder;
import java.util.Date;

import net.yacy.cora.protocol.HeaderFramework;
import net.yacy.cora.protocol.RequestHeader;
import net.yacy.kelondro.data.meta.DigestURI;
import net.yacy.kelondro.logging.Log;

import de.anomic.crawler.CrawlProfile;
import de.anomic.crawler.retrieval.Request;
import de.anomic.search.Segment;
import de.anomic.search.Segments;
import de.anomic.search.Switchboard;
import de.anomic.server.serverObjects;
import de.anomic.server.serverSwitch;

public class QuickCrawlLink_p {
    
    /**
     * Example Javascript to call this servlet:
     * <code>javascript:w = window.open('http://user:pwd@localhost:8080/QuickCrawlLink_p.html?indexText=on&indexMedia=on&crawlingQ=on&xdstopw=on&title=' + escape(document.title) + '&url=' + location.href,'_blank','height=150,width=500,resizable=yes,scrollbar=no,directory=no,menubar=no,location=no'); w.focus();</code>
     * @param header the complete HTTP header of the request
     * @param post any arguments for this servlet, the request carried with (GET as well as POST)
     * @param env the serverSwitch object holding all runtime-data
     * @return the rewrite-properties for the template
     */
    public static serverObjects respond(final RequestHeader header, final serverObjects post, final serverSwitch env) {
        
        final serverObjects prop = new serverObjects();
        final Switchboard sb = (Switchboard) env;
        
        // get segment
        Segment indexSegment = null;
        if (post != null && post.containsKey("segment")) {
            String segmentName = post.get("segment");
            if (sb.indexSegments.segmentExist(segmentName)) {
                indexSegment = sb.indexSegments.segment(segmentName);
            }
        } else {
            // take default segment
            indexSegment = sb.indexSegments.segment(Segments.Process.PUBLIC);
        }
        
        if (post == null) {
            // send back usage example
            prop.put("mode", "0");
            
            // get the http host header
            final String hostSocket = header.get(HeaderFramework.CONNECTION_PROP_HOST);
            
            //String host = hostSocket;
            int port = 80;
            final int pos = hostSocket.indexOf(":");
            if (pos != -1) {
                port = Integer.parseInt(hostSocket.substring(pos + 1));
                //host = hostSocket.substring(0, pos);
            }    
            
            prop.put("mode_host", "localhost");
            prop.put("mode_port", port);
            
            return prop;
        }
        prop.put("mode", "1");
        
        // get the URL
        String crawlingStart = post.get("url",null);
        try {
            crawlingStart = URLDecoder.decode(crawlingStart, "UTF-8");
        } catch (final UnsupportedEncodingException e) {
            Log.logException(e);
        }
        
        // get the browser title
        final String title = post.get("title",null);
        
        // get other parameters if set
        final String crawlingMustMatch  = post.get("mustmatch", CrawlProfile.MATCH_ALL);
        final String crawlingMustNotMatch  = post.get("mustnotmatch", CrawlProfile.MATCH_NEVER);
        final int CrawlingDepth      = Integer.parseInt(post.get("crawlingDepth", "0"));        
        final boolean crawlDynamic   = post.get("crawlingQ", "").equals("on");
        final boolean indexText      = post.get("indexText", "on").equals("on");
        final boolean indexMedia      = post.get("indexMedia", "on").equals("on");
        final boolean storeHTCache   = post.get("storeHTCache", "").equals("on");
        final boolean remoteIndexing = post.get("crawlOrder", "").equals("on");
        final boolean xsstopw        = post.get("xsstopw", "").equals("on");
        final boolean xdstopw        = post.get("xdstopw", "").equals("on");
        final boolean xpstopw        = post.get("xpstopw", "").equals("on");

        prop.put("mode_url", (crawlingStart == null) ? "unknown" : crawlingStart);
        prop.putHTML("mode_title", (title == null) ? "unknown" : title);
        
        if (crawlingStart != null) {
            crawlingStart = crawlingStart.trim();
            try {crawlingStart = new DigestURI(crawlingStart).toNormalform(true, true);} catch (final MalformedURLException e1) {}
            
            // check if url is proper
            DigestURI crawlingStartURL = null;
            try {
                crawlingStartURL = new DigestURI(crawlingStart);
            } catch (final MalformedURLException e) {
                prop.put("mode_status", "1");
                prop.put("mode_code", "1");
                return prop;
            }
                    
            final byte[] urlhash = crawlingStartURL.hash();
            indexSegment.urlMetadata().remove(urlhash);
            sb.crawlQueues.noticeURL.removeByURLHash(urlhash);
            sb.crawlQueues.errorURL.remove(urlhash);
            
            // create crawling profile
            CrawlProfile pe = null;
            try {
                pe = new CrawlProfile(
                        crawlingStartURL.getHost(), 
                        crawlingStartURL,
                        crawlingMustMatch,
                        crawlingMustNotMatch,
                        CrawlingDepth,
                        60 * 24 * 30, // recrawlIfOlder (minutes); here: one month
                        -1, // domMaxPages, if negative: no count restriction
                        crawlDynamic,
                        indexText,
                        indexMedia,
                        storeHTCache,
                        remoteIndexing,
                        xsstopw,
                        xdstopw,
                        xpstopw,
                        CrawlProfile.CacheStrategy.IFFRESH);
                sb.crawler.profilesActiveCrawls.put(pe.handle().getBytes(), pe);
            } catch (final Exception e) {
                // mist
                prop.put("mode_status", "2");//Error with url
                prop.put("mode_code", "2");
                prop.putHTML("mode_status_error", e.getMessage());
                return prop;
            }
            
            // stack URL
            String reasonString = null;
            reasonString = sb.crawlStacker.stackCrawl(new Request(
                    sb.peers.mySeed().hash.getBytes(), 
                    crawlingStartURL,
                    null, 
                    (title==null)?"CRAWLING-ROOT":title, 
                    new Date(),
                    pe.handle(),
                    0, 
                    0,
                    0,
                    0
                ));
            
            // validate rejection reason
            if (reasonString == null) {
                prop.put("mode_status", "0");//start msg
                prop.put("mode_code", "0");
            } else {
                prop.put("mode_status", "3");//start msg
                prop.put("mode_code","3");
                prop.putHTML("mode_status_error", reasonString);
            }
        }
        
        return prop;
    }
}