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5b0c1449e1
1. avoid adding duplicate file name entries in config properties for lists, 2. correctly merge all path masks from all list files for the same host masks, 3. rewrite helper methods standard java methods for Collection transformations, 4. merged various methods with identical functionality for different Collection implementations into one, 5. minor refactoring to improve code readability. git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@4087 6c8d7289-2bf4-0310-a012-ef5d649a1542
336 lines
14 KiB
Java
336 lines
14 KiB
Java
// BlacklistCleaner_p.java
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// -----------------------
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// part of YaCy
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// (C) by Michael Peter Christen; mc@anomic.de
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// first published on http://www.anomic.de
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// Frankfurt, Germany, 2004
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//
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// This File is contributed by Franz Brausze
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//
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// $LastChangedDate: 2007-01-27 14:07:54 +0000 (Sa, 27 Jan 2007) $
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// $LastChangedRevision: 3217 $
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// $LastChangedBy: karlchenofhell $
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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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//
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// Using this software in any meaning (reading, learning, copying, compiling,
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// running) means that you agree that the Author(s) is (are) not responsible
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// for cost, loss of data or any harm that may be caused directly or indirectly
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// by usage of this softare or this documentation. The usage of this software
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// is on your own risk. The installation and usage (starting/running) of this
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// software may allow other people or application to access your computer and
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// any attached devices and is highly dependent on the configuration of the
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// software which must be done by the user of the software; the author(s) is
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// (are) also not responsible for proper configuration and usage of the
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// software, even if provoked by documentation provided together with
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// the software.
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//
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// Any changes to this file according to the GPL as documented in the file
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// gpl.txt aside this file in the shipment you received can be done to the
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// lines that follows this copyright notice here, but changes must not be
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// done inside the copyright notive above. A re-distribution must contain
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// the intact and unchanged copyright notice.
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// Contributions and changes to the program code must be marked as such.
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// You must compile this file with
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// javac -classpath .:../classes BlacklistCleaner_p.java
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// if the shell's current path is HTROOT
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import java.io.File;
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import java.io.FileWriter;
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import java.io.IOException;
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import java.io.PrintWriter;
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import java.util.ArrayList;
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import java.util.Collection;
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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.Iterator;
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import java.util.Map.Entry;
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import java.util.regex.Pattern;
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import java.util.regex.PatternSyntaxException;
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import de.anomic.data.listManager;
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import de.anomic.http.httpHeader;
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import de.anomic.plasma.plasmaSwitchboard;
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import de.anomic.plasma.urlPattern.abstractURLPattern;
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import de.anomic.plasma.urlPattern.defaultURLPattern;
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import de.anomic.plasma.urlPattern.plasmaURLPattern;
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import de.anomic.server.serverObjects;
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import de.anomic.server.serverSwitch;
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import de.anomic.server.logging.serverLog;
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public class BlacklistCleaner_p {
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private static final String RESULTS = "results_";
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private static final String DISABLED = "disabled_";
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private static final String BLACKLISTS = "blacklists_";
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private static final String ENTRIES = "entries_";
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private static final int ERR_TWO_WILDCARDS_IN_HOST = 0;
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private static final int ERR_SUBDOMAIN_XOR_WILDCARD = 1;
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private static final int ERR_PATH_REGEX = 2;
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private static final int ERR_WILDCARD_BEGIN_OR_END = 3;
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private static final int ERR_HOST_WRONG_CHARS = 4;
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private static final int ERR_DOUBLE_OCCURANCE = 5;
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public static final Class[] supportedBLEngines = {
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defaultURLPattern.class
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};
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public static serverObjects respond(httpHeader header, serverObjects post, serverSwitch env) {
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serverObjects prop = new serverObjects();
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// initialize the list manager
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listManager.switchboard = (plasmaSwitchboard) env;
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listManager.listsPath = new File(env.getRootPath(), env.getConfig("listManager.listsPath", "DATA/LISTS"));
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String blacklistToUse = null;
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// getting the list of supported blacklist types
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String supportedBlacklistTypesStr = abstractURLPattern.BLACKLIST_TYPES_STRING;
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String[] supportedBlacklistTypes = supportedBlacklistTypesStr.split(",");
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if (post == null) {
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prop.put("results", 0);
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putBlacklists(prop, listManager.getDirListing(listManager.listsPath), blacklistToUse);
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return prop;
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}
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if (post.containsKey("listNames")) {
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blacklistToUse = (String)post.get("listNames");
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if (blacklistToUse.length() == 0 || !listManager.listSetContains("listManager.listsPath", blacklistToUse))
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prop.put("results", 2);
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}
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putBlacklists(prop, listManager.getDirListing(listManager.listsPath), blacklistToUse);
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if (blacklistToUse != null) {
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prop.put("results", 1);
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if (post.containsKey("delete")) {
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prop.put(RESULTS + "modified", 1);
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prop.put(RESULTS + "modified_delCount", removeEntries(blacklistToUse, supportedBlacklistTypes, getByPrefix(post, "select", true, true)));
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} else if (post.containsKey("alter")) {
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prop.put(RESULTS + "modified", 2);
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prop.put(RESULTS + "modified_alterCount", alterEntries(blacklistToUse, supportedBlacklistTypes, getByPrefix(post, "select", true, false), getByPrefix(post, "entry", false, false)));
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}
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// list illegal entries
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HashMap ies = getIllegalEntries(blacklistToUse, supportedBlacklistTypes, plasmaSwitchboard.urlBlacklist);
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prop.put(RESULTS + "entries", ies.size());
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prop.put(RESULTS + "blEngine", plasmaSwitchboard.urlBlacklist.getEngineInfo());
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prop.put(RESULTS + "disabled", (ies.size() == 0) ? 1 : 0);
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if (ies.size() > 0) {
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prop.put(RESULTS + DISABLED + "entries", ies.size());
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Iterator it = ies.keySet().iterator();
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int i = 0;
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String s;
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while (it.hasNext()) {
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s = (String)it.next();
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prop.put(RESULTS + DISABLED + ENTRIES + i + "_error", ((Integer)ies.get(s)).longValue());
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prop.put(RESULTS + DISABLED + ENTRIES + i + "_entry", s);
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i++;
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}
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}
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}
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return prop;
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}
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private static void putBlacklists(serverObjects prop, String[] lists, String selected) {
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boolean supported = false;
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for (int i=0; i<supportedBLEngines.length && !supported; i++)
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supported |= (plasmaSwitchboard.urlBlacklist.getClass() == supportedBLEngines[i]);
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if (supported) {
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if (lists.length > 0) {
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prop.put("disabled", 0);
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prop.put(DISABLED + "blacklists", lists.length);
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for (int i=0; i<lists.length; i++) {
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prop.put(DISABLED + BLACKLISTS + i + "_name", lists[i]);
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prop.put(DISABLED + BLACKLISTS + i + "_selected", (lists[i].equals(selected)) ? 1 : 0);
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}
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} else {
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prop.put("disabled", 2);
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}
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} else {
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prop.put("disabled", 1);
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for (int i=0; i<supportedBLEngines.length; i++)
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prop.put(DISABLED + "engines_" + i + "_name", supportedBLEngines[i].getName());
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prop.put(DISABLED + "engines", supportedBLEngines.length);
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}
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}
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private static String[] getByPrefix(serverObjects post, String prefix, boolean useKeys, boolean useHashSet) {
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Collection r;
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if (useHashSet) {
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r = new HashSet();
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} else {
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r = new ArrayList();
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}
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Iterator it;
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String s;
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if (useKeys) {
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it = post.keySet().iterator();
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while (it.hasNext())
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if ((s = (String)it.next()).indexOf(prefix) == 0)
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r.add(s.substring(prefix.length()));
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} else {
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it = post.entrySet().iterator();
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Entry entry;
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while (it.hasNext()) {
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entry = (Entry)it.next();
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if (((String)entry.getKey()).indexOf(prefix) == 0)
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r.add(entry.getValue());
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}
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}
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return (String[])r.toArray(new String[r.size()]);
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}
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private static HashMap /* entry, error-code */ getIllegalEntries(String blacklistToUse, String[] supportedBlacklistTypes, plasmaURLPattern blEngine) {
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HashMap r = new HashMap();
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HashSet ok = new HashSet();
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ArrayList list = listManager.getListArray(new File(listManager.listsPath, blacklistToUse));
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Iterator it = list.iterator();
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String s, host, path;
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if (blEngine instanceof defaultURLPattern) {
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int slashPos;
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while (it.hasNext()) {
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s = ((String)it.next()).trim();
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// check for double-occurance
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if (ok.contains(s)) {
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r.put(s, new Integer(ERR_DOUBLE_OCCURANCE));
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continue;
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}
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ok.add(s);
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if ((slashPos = s.indexOf("/")) == -1) {
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host = s;
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path = ".*";
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} else {
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host = s.substring(0, slashPos);
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path = s.substring(slashPos + 1);
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}
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int i = host.indexOf("*");
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// check whether host begins illegally
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if (!host.matches("([A-Za-z0-9_-]+|\\*)(\\.([A-Za-z0-9_-]+|\\*))*")) {
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if (i == 0 && host.length() > 1 && host.charAt(1) != '.') {
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r.put(s, new Integer(ERR_SUBDOMAIN_XOR_WILDCARD));
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continue;
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}
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r.put(s, new Integer(ERR_HOST_WRONG_CHARS));
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continue;
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}
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// in host-part only full sub-domains may be wildcards
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if (host.length() > 0 && i > -1) {
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if (!(i == 0 || i == host.length() - 1)) {
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r.put(s, new Integer(ERR_WILDCARD_BEGIN_OR_END));
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continue;
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}
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if (i == host.length() - 1 && host.length() > 1 && host.charAt(i - 1) != '.') {
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r.put(s, new Integer(ERR_SUBDOMAIN_XOR_WILDCARD));
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continue;
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}
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}
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// check for double-occurences of "*" in host
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if (host.indexOf("*", i + 1) > -1) {
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r.put(s, new Integer(ERR_TWO_WILDCARDS_IN_HOST));
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continue;
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}
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// check for errors on regex-compiling path
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try {
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Pattern.compile(path);
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} catch (PatternSyntaxException e) {
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r.put(s, new Integer(ERR_PATH_REGEX));
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continue;
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}
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}
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}
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return r;
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}
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private static int removeEntries(String blacklistToUse, String[] supportedBlacklistTypes, String[] entries) {
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// load blacklist data from file
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ArrayList list = listManager.getListArray(new File(listManager.listsPath, blacklistToUse));
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// delete the old entry from file
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String s;
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for (int i=0; i<entries.length; i++) {
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s = entries[i];
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if (list != null) while (list.contains(s)) list.remove(s);
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// remove the entry from the running blacklist engine
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for (int blTypes=0; blTypes < supportedBlacklistTypes.length; blTypes++) {
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if (listManager.listSetContains(supportedBlacklistTypes[blTypes] + ".BlackLists", blacklistToUse)) {
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String host = (s.indexOf("/") == -1) ? s : s.substring(0, s.indexOf("/"));
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String path = (s.indexOf("/") == -1) ? ".*" : s.substring(s.indexOf("/") + 1);
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try {
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plasmaSwitchboard.urlBlacklist.remove(supportedBlacklistTypes[blTypes],
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host,path);
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} catch (RuntimeException e) { System.err.println(e.getMessage() + ": " + host + "/" + path); }
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}
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}
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}
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if (list != null) listManager.writeList(new File(listManager.listsPath, blacklistToUse), (String[])list.toArray(new String[list.size()]));
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return entries.length;
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}
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private static int alterEntries(
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String blacklistToUse,
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String[] supportedBlacklistTypes,
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String[] oldE,
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String[] newE) {
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removeEntries(blacklistToUse, supportedBlacklistTypes, oldE);
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PrintWriter pw = null;
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try {
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pw = new PrintWriter(new FileWriter(new File(listManager.listsPath, blacklistToUse), true));
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String host, path;
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for (int i=0, pos; i<newE.length; i++) {
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pos = newE[i].indexOf("/");
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if (pos < 0) {
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host = newE[i];
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path = ".*";
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} else {
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host = newE[i].substring(0, pos);
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path = newE[i].substring(pos + 1);
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}
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pw.println(host + "/" + path);
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for (int blTypes=0; blTypes < supportedBlacklistTypes.length; blTypes++) {
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if (listManager.listSetContains(supportedBlacklistTypes[blTypes] + ".BlackLists",blacklistToUse)) {
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plasmaSwitchboard.urlBlacklist.add(
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supportedBlacklistTypes[blTypes],
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host,
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path);
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}
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}
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}
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pw.close();
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} catch (IOException e) {
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serverLog.logSevere("BLACKLIST-CLEANER", "error on writing altered entries to blacklist", e);
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}
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return newE.length;
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}
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}
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