git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@7675 6c8d7289-2bf4-0310-a012-ef5d649a1542pull/1/head
orbiter
14 years ago
parent
a3e707283d
commit
d8e934c085
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/**
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* ClientIdentification
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* Copyright 2011 by Michael Peter Christen, mc@yacy.net, Frankfurt a. M., Germany
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* First released 26.04.2011 at http://yacy.net
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*
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* $LastChangedDate: 2011-04-21 23:59:56 +0200 (Do, 21 Apr 2011) $
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* $LastChangedRevision: 7673 $
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* $LastChangedBy: orbiter $
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program in the file lgpl21.txt
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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package net.yacy.cora.protocol;
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public class ClientIdentification {
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/**
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* provide system information (this is part of YaCy protocol)
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*/
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public static final String yacySystem = System.getProperty("os.arch", "no-os-arch") + " " +
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System.getProperty("os.name", "no-os-name") + " " + System.getProperty("os.version", "no-os-version") +
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"; " + "java " + System.getProperty("java.version", "no-java-version") + "; " + generateLocation();
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/**
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* the default user agent: YaCy
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*/
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private static String agent = generateYaCyBot("new");
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/**
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* produce a YaCy user agent string
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* @param addinfo
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* @return
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*/
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public static String generateYaCyBot(String addinfo) {
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return "yacybot (" + addinfo + "; " + yacySystem + ") http://yacy.net/bot.html";
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}
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/**
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* set the user agent
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* @param newagent
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*/
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public static void setUserAgent(String newagent) {
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agent = newagent;
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}
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/**
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* produce a userAgent String for this cora client
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* @return
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*/
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public static String getUserAgent() {
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return agent;
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}
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/**
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* generating the location string
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*
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* @return
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*/
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public static String generateLocation() {
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String loc = System.getProperty("user.timezone", "nowhere");
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final int p = loc.indexOf('/');
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if (p > 0) {
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loc = loc.substring(0, p);
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}
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loc = loc + "/" + System.getProperty("user.language", "dumb");
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return loc;
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}
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/**
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* gets the location out of the user agent
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*
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* location must be after last ; and before first )
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*
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* @param userAgent in form "useragentinfo (some params; _location_) additional info"
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* @return
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*/
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public static String parseLocationInUserAgent(final String userAgent) {
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final String location;
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final int firstOpenParenthesis = userAgent.indexOf('(');
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final int lastSemicolon = userAgent.lastIndexOf(';');
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final int firstClosedParenthesis = userAgent.indexOf(')');
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if (lastSemicolon < firstClosedParenthesis) {
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// ; Location )
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location = (firstClosedParenthesis > 0) ? userAgent.substring(lastSemicolon + 1, firstClosedParenthesis)
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.trim() : userAgent.substring(lastSemicolon + 1).trim();
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} else {
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if (firstOpenParenthesis < userAgent.length()) {
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if (firstClosedParenthesis > firstOpenParenthesis) {
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// ( Location )
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location = userAgent.substring(firstOpenParenthesis + 1, firstClosedParenthesis).trim();
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} else {
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// ( Location <end>
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location = userAgent.substring(firstOpenParenthesis + 1).trim();
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}
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} else {
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location = "";
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}
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}
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return location;
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}
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}
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