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5e31bad711
all unique links! This made it necessary, that a large portion of the parser and link processing classes must be adopted to carry a different type of link collection which carry a property attribute which are attached to web anchors. - introduction of a new URL class, AnchorURL - the other url classes, DigestURI and MultiProtocolURI had been renamed and refactored to fit into a new document package schema, document.id - cleanup of net.yacy.cora.document package and refactoring
66 lines
2.3 KiB
Java
66 lines
2.3 KiB
Java
// URLLicense.java
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// (C) 2007 by Michael Peter Christen; mc@yacy.net, Frankfurt a. M., Germany
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// first published 03.07.2007 on http://yacy.net
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//
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// This is a part of YaCy, a peer-to-peer based web search engine
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//
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// $LastChangedDate$
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// $LastChangedRevision$
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// $LastChangedBy$
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//
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// LICENSE
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program 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
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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package net.yacy.data;
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import java.util.Collections;
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import java.util.Map;
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import net.yacy.cora.document.encoding.ASCII;
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import net.yacy.cora.document.id.DigestURL;
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import net.yacy.cora.storage.SizeLimitedMap;
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public class URLLicense {
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// this class defines a license-generation for URLs
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// it is used in case of snippet- and preview-Image-fetching to grant also non-authorized users the usage of a image-fetcher servlet
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private static final int maxQueue = 10000;
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private static final Map<String, String> permissions = Collections.synchronizedMap(new SizeLimitedMap<String, String>(maxQueue));
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public static String aquireLicense(final DigestURL url) {
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if (url == null) return "";
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// generate license key
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String license = ASCII.String(url.hash());
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// store reference to url with license key
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permissions.put(license, url.toNormalform(true));
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// return the license key
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return license;
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}
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public static String aquireLicense(final String license, final String url) {
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// store reference to url with license key
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permissions.put(license, url);
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// return the license key
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return license;
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}
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public static String releaseLicense(final String license) {
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return permissions.remove(license);
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}
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}
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