yacy_search_server/htroot/Network.java
orbiter 1d8d51075c refactoring:
- removed the plasma package. The name of that package came from a very early pre-version of YaCy, even before YaCy was named AnomicHTTPProxy. The Proxy project introduced search for cache contents using class files that had been developed during the plasma project. Information from 2002 about plasma can be found here:
http://web.archive.org/web/20020802110827/http://anomic.de/AnomicPlasma/index.html
We stil have one class that comes mostly unchanged from the plasma project, the Condenser class. But this is now part of the document package and all other classes in the plasma package can be assigned to other packages.
- cleaned up the http package: better structure of that class and clean isolation of server and client classes. The old HTCache becomes part of the client sub-package of http.
- because the plasmaSwitchboard is now part of the search package all servlets had to be touched to declare a different package source.

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6232 6c8d7289-2bf4-0310-a012-ef5d649a1542
2009-07-19 20:37:44 +00:00

501 lines
29 KiB
Java

// Network.java
// -----------------------
// part of YaCy
// (C) by Michael Peter Christen; mc@yacy.net
// first published on http://www.anomic.de
// Frankfurt, Germany, 2004, 2005
//
// $LastChangedDate$
// $LastChangedRevision$
// $LastChangedBy$
//
// 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 Network.java
// if the shell's current path is HTROOT
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.regex.PatternSyntaxException;
import de.anomic.crawler.retrieval.HTTPLoader;
import de.anomic.http.client.Client;
import de.anomic.http.metadata.RequestHeader;
import de.anomic.kelondro.util.DateFormatter;
import de.anomic.search.Switchboard;
import de.anomic.search.SwitchboardConstants;
import de.anomic.server.serverCodings;
import de.anomic.server.serverObjects;
import de.anomic.server.serverSwitch;
import de.anomic.yacy.yacyClient;
import de.anomic.yacy.yacyNewsPool;
import de.anomic.yacy.yacyNewsRecord;
import de.anomic.yacy.yacySeed;
import de.anomic.yacy.yacyVersion;
public class Network {
private static final String STR_TABLE_LIST = "table_list_";
public static serverObjects respond(final RequestHeader requestHeader, final serverObjects post, final serverSwitch switchboard) {
final Switchboard sb = (Switchboard) switchboard;
final long start = System.currentTimeMillis();
// return variable that accumulates replacements
final serverObjects prop = new serverObjects();
prop.setLocalized(!(requestHeader.get("PATH")).endsWith(".xml"));
prop.putHTML("page_networkTitle", sb.getConfig("network.unit.description", "unspecified"));
prop.putHTML("page_networkName", sb.getConfig(SwitchboardConstants.NETWORK_NAME, "unspecified"));
final boolean overview = (post == null) || (post.get("page", "0").equals("0"));
final String mySeedType = sb.peers.mySeed().get(yacySeed.PEERTYPE, yacySeed.PEERTYPE_VIRGIN);
final boolean iAmActive = (mySeedType.equals(yacySeed.PEERTYPE_SENIOR) || mySeedType.equals(yacySeed.PEERTYPE_PRINCIPAL));
if (overview) {
long accActLinks = sb.peers.countActiveURL();
long accActWords = sb.peers.countActiveRWI();
final long accPassLinks = sb.peers.countPassiveURL();
final long accPassWords = sb.peers.countPassiveRWI();
long accPotLinks = sb.peers.countPotentialURL();
long accPotWords = sb.peers.countPotentialRWI();
int conCount = sb.peers.sizeConnected();
final int disconCount = sb.peers.sizeDisconnected();
int potCount = sb.peers.sizePotential();
// final boolean complete = ((post == null) ? false : post.get("links", "false").equals("true"));
final long otherppm = sb.peers.countActivePPM();
final double otherqpm = sb.peers.countActiveQPM();
long myppm = 0;
double myqph = 0d;
// create own peer info
final yacySeed seed = sb.peers.mySeed();
if (sb.peers.mySeed() != null){ //our Peer
// update seed info
sb.updateMySeed();
long LCount;
long ICount;
long RCount;
try {
LCount = Long.parseLong(seed.get(yacySeed.LCOUNT, "0"));
ICount = Long.parseLong(seed.get(yacySeed.ICOUNT, "0"));
RCount = Long.parseLong(seed.get(yacySeed.RCOUNT, "0"));
} catch (final Exception e) {LCount = 0; ICount = 0; RCount = 0;}
// my-info
prop.putHTML("table_my-name", seed.get(yacySeed.NAME, "-") );
prop.put("table_my-hash", seed.hash );
if (sb.peers.mySeed().isVirgin()) {
prop.put("table_my-info", 0);
} else if(sb.peers.mySeed().isJunior()) {
prop.put("table_my-info", 1);
accPotLinks += LCount;
accPotWords += ICount;
} else if(sb.peers.mySeed().isSenior()) {
prop.put("table_my-info", 2);
accActLinks += LCount;
accActWords += ICount;
} else if(sb.peers.mySeed().isPrincipal()) {
prop.put("table_my-info", 3);
accActLinks += LCount;
accActWords += ICount;
}
prop.put("table_my-acceptcrawl", seed.getFlagAcceptRemoteCrawl() ? 1 : 0);
prop.put("table_my-dhtreceive", seed.getFlagAcceptRemoteIndex() ? 1 : 0);
prop.put("table_my-rankingreceive", seed.getFlagAcceptCitationReference() ? 1 : 0);
myppm = seed.getPPM();
myqph = 60d * seed.getQPM();
prop.put("table_my-version", seed.get(yacySeed.VERSION, "-"));
prop.put("table_my-utc", seed.get(yacySeed.UTC, "-"));
prop.put("table_my-uptime", DateFormatter.formatInterval(60000 * Long.parseLong(seed.get(yacySeed.UPTIME, ""))));
prop.putNum("table_my-LCount", LCount);
prop.putNum("table_my-ICount", ICount);
prop.putNum("table_my-RCount", RCount);
prop.putNum("table_my-sI", Long.parseLong(seed.get(yacySeed.INDEX_OUT, "0")));
prop.putNum("table_my-sU", Long.parseLong(seed.get(yacySeed.URL_OUT, "0")));
prop.putNum("table_my-rI", Long.parseLong(seed.get(yacySeed.INDEX_IN, "0")));
prop.putNum("table_my-rU", Long.parseLong(seed.get(yacySeed.URL_IN, "0")));
prop.putNum("table_my-ppm", myppm);
prop.putNum("table_my-qph", Math.round(100d * myqph) / 100d);
prop.putNum("table_my-totalppm", sb.currentPPM());
prop.putNum("table_my-totalqph", Math.round(6000d * sb.totalQPM) / 100d);
prop.putNum("table_my-seeds", Long.parseLong(seed.get(yacySeed.SCOUNT, "0")));
prop.putNum("table_my-connects", Double.parseDouble(seed.get(yacySeed.CCOUNT, "0")));
prop.put("table_my-url", seed.get(yacySeed.SEEDLIST, ""));
// generating the location string
prop.putHTML("table_my-location", Client.generateLocation());
}
// overall results: Network statistics
if (iAmActive) conCount++; else if (mySeedType.equals(yacySeed.PEERTYPE_JUNIOR)) potCount++;
prop.putNum("table_active-count", conCount);
prop.putNum("table_active-links", accActLinks);
prop.putNum("table_active-words", accActWords);
prop.putNum("table_passive-count", disconCount);
prop.putNum("table_passive-links", accPassLinks);
prop.putNum("table_passive-words", accPassWords);
prop.putNum("table_potential-count", potCount);
prop.putNum("table_potential-links", accPotLinks);
prop.putNum("table_potential-words", accPotWords);
prop.putNum("table_all-count", conCount + disconCount + potCount);
prop.putNum("table_all-links", accActLinks + accPassLinks + accPotLinks);
prop.putNum("table_all-words", accActWords + accPassWords + accPotWords);
prop.putNum("table_gppm", otherppm + ((iAmActive) ? myppm : 0));
prop.putNum("table_gqph", Math.round(6000d * otherqpm + 100d * ((iAmActive) ? myqph : 0d)) / 100d);
prop.put("table", 2); // triggers overview
prop.put("page", 0);
} else if (post != null && Integer.parseInt(post.get("page", "1")) == 4) {
prop.put("table", 4); // triggers overview
prop.put("page", 4);
if (post.containsKey("addPeer")) {
// AUTHENTICATE
if (!requestHeader.containsKey(RequestHeader.AUTHORIZATION)) {
prop.putHTML("AUTHENTICATE","log-in");
return prop;
}
final HashMap<String, String> map = new HashMap<String, String>();
map.put(yacySeed.IP, post.get("peerIP"));
map.put(yacySeed.PORT, post.get("peerPort"));
yacySeed peer = new yacySeed(post.get("peerHash"),map);
sb.updateMySeed();
final int added = yacyClient.publishMySeed(sb.peers.mySeed(), sb.peers.peerActions, peer.getPublicAddress(), peer.hash);
if (added <= 0) {
prop.put("table_comment",1);
prop.putHTML("table_comment_status","publish: disconnected peer '" + peer.getName() + "/" + post.get("peerHash") + "' from " + peer.getPublicAddress());
} else {
peer = sb.peers.getConnected(peer.hash);
if (peer == null) {
prop.put("table_comment",1);
prop.putHTML("table_comment_status","publish: disconnected peer 'UNKNOWN/" + post.get("peerHash") + "' from UNKNOWN");
} else {
prop.put("table_comment",2);
prop.putHTML("table_comment_status","publish: handshaked " + peer.get(yacySeed.PEERTYPE, yacySeed.PEERTYPE_SENIOR) + " peer '" + peer.getName() + "' at " + peer.getPublicAddress());
prop.putHTML("table_comment_details",peer.toString());
}
}
prop.putHTML("table_peerHash",post.get("peerHash"));
prop.putHTML("table_peerIP",post.get("peerIP"));
prop.putHTML("table_peerPort",post.get("peerPort"));
} else {
prop.put("table_peerHash","");
prop.put("table_peerIP","");
prop.put("table_peerPort","");
prop.put("table_comment",0);
}
} else {
// generate table
final int page = (post == null ? 1 : Integer.parseInt(post.get("page", "1")));
final int maxCount = (post == null ? 300 : Integer.parseInt(post.get("maxCount", "300")));
int conCount = 0;
if (sb.peers == null) {
prop.put("table", 0);//no remote senior/principal proxies known"
} else {
int size = 0;
switch (page) {
case 1 : size = sb.peers.sizeConnected(); break;
case 2 : size = sb.peers.sizeDisconnected(); break;
case 3 : size = sb.peers.sizePotential(); break;
default: break;
}
if (size == 0) {
prop.put("table", 0);//no remote senior/principal proxies known"
} else {
// add temporary the own seed to the database
if (iAmActive) {
sb.updateMySeed();
sb.peers.addConnected(sb.peers.mySeed());
}
// find updated Information using YaCyNews
final HashSet<String> updatedProfile = new HashSet<String>();
final HashMap<String, Map<String, String>> updatedWiki = new HashMap<String, Map<String, String>>();
final HashMap<String, Map<String, String>> updatedBlog = new HashMap<String, Map<String, String>>();
final HashMap<String, String> isCrawling = new HashMap<String, String>();
yacyNewsRecord record;
final Iterator<yacyNewsRecord> recordIterator = sb.peers.newsPool.recordIterator(yacyNewsPool.INCOMING_DB, true);
while (recordIterator.hasNext()) {
record = recordIterator.next();
if (record == null) {
continue;
} else if (record.category().equals(yacyNewsPool.CATEGORY_PROFILE_UPDATE)) {
updatedProfile.add(record.originator());
} else if (record.category().equals(yacyNewsPool.CATEGORY_WIKI_UPDATE)) {
updatedWiki.put(record.originator(), record.attributes());
} else if (record.category().equals(yacyNewsPool.CATEGORY_BLOG_ADD)) {
updatedBlog.put(record.originator(), record.attributes());
} else if (record.category().equals(yacyNewsPool.CATEGORY_CRAWL_START)) {
isCrawling.put(record.originator(), record.attributes().get("startURL"));
}
}
boolean dark = true;
yacySeed seed;
final boolean complete = (post != null && post.containsKey("ip"));
Iterator<yacySeed> e = null;
final boolean order = (post != null && post.get("order", "down").equals("up"));
final String sort = (post == null ? null : post.get("sort", null));
switch (page) {
case 1 : e = sb.peers.seedsSortedConnected(order, (sort == null ? yacySeed.LCOUNT : sort)); break;
case 2 : e = sb.peers.seedsSortedDisconnected(order, (sort == null ? yacySeed.LASTSEEN : sort)); break;
case 3 : e = sb.peers.seedsSortedPotential(order, (sort == null ? yacySeed.LASTSEEN : sort)); break;
default: break;
}
String startURL;
Map<String, String> wikiMap;
Map<String, String> blogMap;
String userAgent, location;
int PPM;
double QPM;
Pattern peerSearchPattern = null;
prop.put("regexerror", 0);
prop.put("regexerror_wrongregex", (String)null);
if (post != null && post.containsKey("search")) {
try {
peerSearchPattern = Pattern.compile(post.get("match", ""), Pattern.CASE_INSENSITIVE);
} catch (final PatternSyntaxException pse){
prop.put("regexerror", 1);
prop.putHTML("regexerror_wrongregex", pse.getPattern());
}
}
if(e != null) {
while (e.hasNext() && conCount < maxCount) {
seed = e.next();
if (seed != null) {
if((post != null && post.containsKey("search")) && peerSearchPattern != null /*(wrongregex == null)*/) {
boolean abort = true;
Matcher m = peerSearchPattern.matcher (seed.getName());
if (m.find ()) {
abort = false;
}
m = peerSearchPattern.matcher (seed.hash);
if (m.find ()) {
abort = false;
}
if (abort) continue;
}
prop.put(STR_TABLE_LIST + conCount + "_updatedProfile", 0);
prop.put(STR_TABLE_LIST + conCount + "_updatedWikiPage", 0);
prop.put(STR_TABLE_LIST + conCount + "_updatedBlog", 0);
prop.put(STR_TABLE_LIST + conCount + "_isCrawling", 0);
if (conCount >= maxCount) { break; }
if (sb.peers != null && sb.peers.mySeed() != null && seed.hash != null && seed.hash.equals(sb.peers.mySeed().hash)) {
prop.put(STR_TABLE_LIST + conCount + "_dark", 2);
} else {
prop.put(STR_TABLE_LIST + conCount + "_dark", ((dark) ? 1 : 0) ); dark=!dark;
}
if (updatedProfile.contains(seed.hash)) {
prop.put(STR_TABLE_LIST + conCount + "_updatedProfile", 1);
prop.put(STR_TABLE_LIST + conCount + "_updatedProfile_hash", seed.hash);
}
if ((wikiMap = updatedWiki.get(seed.hash)) == null) {
prop.put(STR_TABLE_LIST + conCount + "_updatedWiki", 0);
} else {
prop.put(STR_TABLE_LIST + conCount + "_updatedWiki", 1);
prop.putHTML(STR_TABLE_LIST + conCount + "_updatedWiki_page", wikiMap.get("page"));
prop.put(STR_TABLE_LIST + conCount + "_updatedWiki_address", seed.getPublicAddress());
}
if ((blogMap = updatedBlog.get(seed.hash)) == null) {
prop.put(STR_TABLE_LIST + conCount + "_updatedBlog", 0);
} else {
prop.put(STR_TABLE_LIST + conCount + "_updatedBlog", 1);
prop.putHTML(STR_TABLE_LIST + conCount + "_updatedBlog_page", blogMap.get("page"));
prop.putHTML(STR_TABLE_LIST + conCount + "_updatedBlog_subject", blogMap.get("subject"));
prop.put(STR_TABLE_LIST + conCount + "_updatedBlog_address", seed.getPublicAddress());
}
PPM = seed.getPPM();
QPM = seed.getQPM();
if (((startURL = isCrawling.get(seed.hash)) != null) && (PPM >= 4)) {
prop.put(STR_TABLE_LIST + conCount + "_isCrawling", 1);
prop.put(STR_TABLE_LIST + conCount + "_isCrawling_page", startURL);
}
prop.put(STR_TABLE_LIST + conCount + "_hash", seed.hash);
String shortname = seed.get(yacySeed.NAME, "deadlink");
if (shortname.length() > 20) {
shortname = shortname.substring(0, 20) + "...";
}
prop.putHTML(STR_TABLE_LIST + conCount + "_shortname", shortname);
prop.putHTML(STR_TABLE_LIST + conCount + "_fullname", seed.get(yacySeed.NAME, "deadlink"));
userAgent = null;
if (seed.hash != null && seed.hash.equals(sb.peers.mySeed().hash)) {
userAgent = HTTPLoader.yacyUserAgent;
location = Client.generateLocation();
} else {
userAgent = sb.peers.peerActions.getUserAgent(seed.getIP());
location = parseLocationInUserAgent(userAgent);
}
prop.put(STR_TABLE_LIST + conCount + "_location", location);
if (complete) {
prop.put(STR_TABLE_LIST + conCount + "_complete", 1);
prop.put(STR_TABLE_LIST + conCount + "_complete_ip", seed.getIP() );
prop.put(STR_TABLE_LIST + conCount + "_complete_port", seed.get(yacySeed.PORT, "-") );
prop.put(STR_TABLE_LIST + conCount + "_complete_hash", seed.hash);
prop.put(STR_TABLE_LIST + conCount + "_complete_age", seed.getAge());
prop.putNum(STR_TABLE_LIST + conCount + "_complete_CRWCnt", Long.parseLong(seed.get(yacySeed.CRWCNT, "0")));
prop.putNum(STR_TABLE_LIST + conCount + "_complete_CRTCnt", Long.parseLong(seed.get(yacySeed.CRTCNT, "0")));
prop.putNum(STR_TABLE_LIST + conCount + "_complete_seeds", Long.parseLong(seed.get(yacySeed.SCOUNT, "0")));
prop.putNum(STR_TABLE_LIST + conCount + "_complete_connects", Double.parseDouble(seed.get(yacySeed.CCOUNT, "0")));
prop.putHTML(STR_TABLE_LIST + conCount + "_complete_userAgent", userAgent);
} else {
prop.put(STR_TABLE_LIST + conCount + "_complete", 0);
}
if (seed.isJunior()) {
prop.put(STR_TABLE_LIST + conCount + "_type", 0);
} else if(seed.isSenior()){
prop.put(STR_TABLE_LIST + conCount + "_type", 1);
} else if(seed.isPrincipal()) {
prop.put(STR_TABLE_LIST + conCount + "_type", 2);
}
prop.putHTML(STR_TABLE_LIST + conCount + "_type_url", seed.get(yacySeed.SEEDLIST, "http://nowhere/"));
final long lastseen = Math.abs((System.currentTimeMillis() - seed.getLastSeenUTC()) / 1000 / 60);
if (page == 1 && lastseen > 720) {
continue;
}
if (page == 2 || (page == 1 && lastseen > 360)) { // Passive Peers should be passive, also Peers without contact greater than 6 hours
// principal/senior/junior: red/red=offline
prop.put(STR_TABLE_LIST + conCount + "_type_direct", 2);
} else {
// principal/senior: green/green=direct or yellow/yellow=passive
// junior: red/green=direct or red/yellow=passive
prop.put(STR_TABLE_LIST + conCount + "_type_direct", seed.getFlagDirectConnect() ? 1 : 0);
}
if (page == 1) {
prop.put(STR_TABLE_LIST + conCount + "_acceptcrawl", seed.getFlagAcceptRemoteCrawl() ? 1 : 0); // green=on or red=off
prop.put(STR_TABLE_LIST + conCount + "_dhtreceive", seed.getFlagAcceptRemoteIndex() ? 1 : 0); // green=on or red=off
prop.put(STR_TABLE_LIST + conCount + "_rankingreceive", (seed.getVersion() >= yacyVersion.YACY_ACCEPTS_RANKING_TRANSMISSION) ? 1 : 0);
} else { // Passive, Potential Peers
if (seed.getFlagAcceptRemoteCrawl()) {
prop.put(STR_TABLE_LIST + conCount + "_acceptcrawl", 2); // red/green: offline, was on
} else {
prop.put(STR_TABLE_LIST + conCount + "_acceptcrawl", 0); // red/red; offline was off
}
if (seed.getFlagAcceptRemoteIndex()) {
prop.put(STR_TABLE_LIST + conCount + "_dhtreceive", 2); // red/green: offline, was on
} else {
prop.put(STR_TABLE_LIST + conCount + "_dhtreceive", 0); // red/red; offline was off
}
if (seed.getVersion() >= yacyVersion.YACY_ACCEPTS_RANKING_TRANSMISSION &&
seed.getFlagAcceptCitationReference()) {
prop.put(STR_TABLE_LIST + conCount + "_rankingreceive", 1);
} else {
prop.put(STR_TABLE_LIST + conCount + "_rankingreceive", 0);
}
}
if (seed.getFlagAcceptRemoteIndex()) {
prop.put(STR_TABLE_LIST + conCount + "_dhtreceive_peertags", "");
} else {
final String peertags = serverCodings.set2string(seed.getPeerTags(), ",", false);
prop.putHTML(STR_TABLE_LIST + conCount + "_dhtreceive_peertags", ((peertags == null) || (peertags.length() == 0)) ? "no tags given" : ("tags = " + peertags));
}
prop.putHTML(STR_TABLE_LIST + conCount + "_version", yacyVersion.combined2prettyVersion(seed.get(yacySeed.VERSION, "0.1"), shortname));
prop.putNum(STR_TABLE_LIST + conCount + "_lastSeen", /*seed.getLastSeenString() + " " +*/ lastseen);
prop.put(STR_TABLE_LIST + conCount + "_utc", seed.get(yacySeed.UTC, "-"));
prop.putHTML(STR_TABLE_LIST + conCount + "_uptime", DateFormatter.formatInterval(60000 * Long.parseLong(seed.get(yacySeed.UPTIME, "0"))));
prop.putNum(STR_TABLE_LIST + conCount + "_LCount", seed.getLong(yacySeed.LCOUNT, 0));
prop.putNum(STR_TABLE_LIST + conCount + "_ICount", seed.getLong(yacySeed.ICOUNT, 0));
prop.putNum(STR_TABLE_LIST + conCount + "_RCount", seed.getLong(yacySeed.RCOUNT, 0));
prop.putNum(STR_TABLE_LIST + conCount + "_sI", seed.getLong(yacySeed.INDEX_OUT, 0));
prop.putNum(STR_TABLE_LIST + conCount + "_sU", seed.getLong(yacySeed.URL_OUT, 0));
prop.putNum(STR_TABLE_LIST + conCount + "_rI", seed.getLong(yacySeed.INDEX_IN, 0));
prop.putNum(STR_TABLE_LIST + conCount + "_rU", seed.getLong(yacySeed.URL_IN, 0));
prop.putNum(STR_TABLE_LIST + conCount + "_ppm", PPM);
prop.putNum(STR_TABLE_LIST + conCount + "_qph", Math.round(6000d * QPM) / 100d);
conCount++;
} // seed != null
} // while
}
if (iAmActive) { sb.peers.removeMySeed(); }
prop.putNum("table_list", conCount);
prop.put("table", 1);
prop.putNum("table_num", conCount);
prop.putNum("table_total", ((page == 1) && (iAmActive)) ? (size + 1) : size );
prop.put("table_complete", ((complete)? 1 : 0) );
}
}
prop.put("page", page);
prop.put("table_page", page);
prop.putHTML("table_searchpattern", (post == null ? "" : post.get("match", "")));
switch (page) {
case 1 : prop.putHTML("table_peertype", "senior/principal"); break;
case 2 : prop.putHTML("table_peertype", "senior/principal"); break;
case 3 : prop.putHTML("table_peertype", yacySeed.PEERTYPE_JUNIOR); break;
default: break;
}
}
prop.putNum("table_rt", System.currentTimeMillis() - start);
// return rewrite properties
return prop;
}
/**
* gets the location out of the user agent
*
* location must be after last ; and before first )
*
* @param userAgent in form "useragentinfo (some params; _location_) additional info"
* @return
*/
private static String parseLocationInUserAgent(final String userAgent) {
final String location;
final int firstOpenParenthesis = userAgent.indexOf('(');
final int lastSemicolon = userAgent.lastIndexOf(';');
final int firstClosedParenthesis = userAgent.indexOf(')');
if (lastSemicolon < firstClosedParenthesis) {
// ; Location )
location = (firstClosedParenthesis > 0) ? userAgent.substring(lastSemicolon + 1, firstClosedParenthesis)
.trim() : userAgent.substring(lastSemicolon + 1).trim();
} else {
if (firstOpenParenthesis < userAgent.length()) {
if (firstClosedParenthesis > firstOpenParenthesis) {
// ( Location )
location = userAgent.substring(firstOpenParenthesis + 1, firstClosedParenthesis).trim();
} else {
// ( Location <end>
location = userAgent.substring(firstOpenParenthesis + 1).trim();
}
} else {
location = "";
}
}
return location;
}
}