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313 lines
13 KiB
313 lines
13 KiB
// Blacklist_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 Brauße
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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.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.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 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 = env.getConfig("BlackLists.types", "");
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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.ListInListslist("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)));
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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), getByPrefix(post, "entry", 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.putSafeXML(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.putSafeXML(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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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", 1);
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}
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}
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private static String[] getByPrefix(serverObjects post, String prefix, boolean useKeys) {
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ArrayList r = new ArrayList();
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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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} else {
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ok.add(s);
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}
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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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} else {
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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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}
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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.ListInListslist(supportedBlacklistTypes[blTypes] + ".BlackLists", blacklistToUse)) {
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plasmaSwitchboard.urlBlacklist.remove(supportedBlacklistTypes[blTypes],
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(s.indexOf("/") == -1) ? s : s.substring(0, s.indexOf("/")),
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(s.indexOf("/") == -1) ? ".*" : s.substring(s.indexOf("/") + 1));
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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.ListInListslist(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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