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349 lines
14 KiB
349 lines
14 KiB
// BlacklistCleaner_p.java
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// -----------------------
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// part of YaCy
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// (C) by Michael Peter Christen; mc@yacy.net
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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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// 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.List;
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import java.util.Map;
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import java.util.Map.Entry;
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import java.util.regex.Matcher;
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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.AbstractBlacklist;
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import de.anomic.data.Blacklist;
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import de.anomic.data.DefaultBlacklist;
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import de.anomic.data.listManager;
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import de.anomic.http.httpRequestHeader;
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import de.anomic.plasma.plasmaSwitchboard;
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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.yacy.logging.Log;
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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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private final static String BLACKLIST_FILENAME_FILTER = "^.*\\.black$";
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public static final Class<?>[] supportedBLEngines = {
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DefaultBlacklist.class
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};
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public static serverObjects respond(final httpRequestHeader header, final serverObjects post, final serverSwitch<?> env) {
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final 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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final String supportedBlacklistTypesStr = AbstractBlacklist.BLACKLIST_TYPES_STRING;
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final 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, BLACKLIST_FILENAME_FILTER), blacklistToUse);
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return prop;
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}
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if (post.containsKey("listNames")) {
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blacklistToUse = 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, BLACKLIST_FILENAME_FILTER), 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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final HashMap<String, Integer> ies = getIllegalEntries(blacklistToUse, plasmaSwitchboard.urlBlacklist);
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prop.put(RESULTS + "blList", blacklistToUse);
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prop.put(RESULTS + "entries", ies.size());
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prop.putHTML(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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int i = 0;
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String s;
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for (Entry<String, Integer> entry: ies.entrySet()) {
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s = entry.getKey();
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prop.put(RESULTS + DISABLED + ENTRIES + i + "_error", entry.getValue().longValue());
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prop.putHTML(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(final serverObjects prop, final List<String> lists, final 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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}
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if (supported) {
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if (lists.size() > 0) {
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prop.put("disabled", "0");
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prop.put(DISABLED + "blacklists", lists.size());
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int count = 0;
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for (String list : lists) {
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prop.putHTML(DISABLED + BLACKLISTS + count + "_name", list);
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prop.put(DISABLED + BLACKLISTS + count + "_selected", (list.equals(selected)) ? "1" : "0");
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count++;
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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.putHTML(DISABLED + "engines_" + i + "_name", supportedBLEngines[i].getName());
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}
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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(final serverObjects post, final String prefix, final boolean useKeys, final boolean useHashSet) {
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Collection<String> r;
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if (useHashSet) {
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r = new HashSet<String>();
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} else {
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r = new ArrayList<String>();
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}
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String s;
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if (useKeys) {
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final Iterator<String> it = post.keySet().iterator();
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while (it.hasNext()) {
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if ((s = it.next()).indexOf(prefix) == 0) {
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r.add(s.substring(prefix.length()));
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}
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}
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} else {
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final Iterator<Map.Entry<String, String>> it = post.entrySet().iterator();
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Map.Entry<String, String> entry;
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while (it.hasNext()) {
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entry = it.next();
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if (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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}
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return r.toArray(new String[r.size()]);
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}
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private static HashMap<String, Integer>/* entry, error-code */ getIllegalEntries(final String blacklistToUse, final Blacklist blEngine) {
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final HashMap<String, Integer> r = new HashMap<String, Integer>();
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final HashSet<String> ok = new HashSet<String>();
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final ArrayList<String> list = listManager.getListArray(new File(listManager.listsPath, blacklistToUse));
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final Iterator<String> it = list.iterator();
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String s, host, path;
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if (blEngine instanceof DefaultBlacklist) {
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int slashPos;
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while (it.hasNext()) {
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s = (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, Integer.valueOf(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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final 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, Integer.valueOf(ERR_SUBDOMAIN_XOR_WILDCARD));
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continue;
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}
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r.put(s, Integer.valueOf(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, Integer.valueOf(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, Integer.valueOf(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, Integer.valueOf(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 (final PatternSyntaxException e) {
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r.put(s, Integer.valueOf(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(final String blacklistToUse, final String[] supportedBlacklistTypes, final String[] entries) {
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// load blacklist data from file
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final ArrayList<String> list = listManager.getListArray(new File(listManager.listsPath, blacklistToUse));
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boolean listChanged = false;
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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){
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// getting rid of escape characters which make it impossible to
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// properly use contains()
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if (s.contains("\\\\")) {
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s = s.replaceAll(Pattern.quote("\\\\"), Matcher.quoteReplacement("\\"));
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}
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if (list.contains(s)) {
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list.remove(s);
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listChanged = true;
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}
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}
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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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final String host = (s.indexOf("/") == -1) ? s : s.substring(0, s.indexOf("/"));
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final 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 (final RuntimeException e) {
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//System.err.println(e.getMessage() + ": " + host + "/" + path);
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Log.logSevere("BLACKLIST-CLEANER", e.getMessage() + ": " + host + "/" + path);
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}
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}
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}
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}
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if (listChanged){
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listManager.writeList(new File(listManager.listsPath, blacklistToUse), list.toArray(new String[list.size()]));
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}
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return entries.length;
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}
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private static int alterEntries(
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final String blacklistToUse,
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final String[] supportedBlacklistTypes,
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final String[] oldE,
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final 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 (final IOException e) {
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Log.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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