48 lines
1.5 KiB
Vala
48 lines
1.5 KiB
Vala
/*
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Copyright (C) 2009-2014 Christian Dywan <christian@twotoasts.de>
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Copyright (C) 2009-2012 Alexander Butenko <a.butenka@gmail.com>
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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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See the file COPYING for the full license text.
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*/
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namespace Adblock {
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public class Keys : Filter {
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List<Regex> blacklist;
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public Keys (Options options) {
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base (options);
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}
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public override void clear () {
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base.clear ();
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blacklist = new List<Regex> ();
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}
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public override Directive? match (string request_uri, string page_uri) throws Error {
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string? uri = fixup_regex ("", request_uri);
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if (uri == null)
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return null;
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int signature_size = 8;
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int pos, l = uri.length;
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for (pos = l - signature_size; pos >= 0; pos--) {
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string signature = uri.offset (pos).ndup (signature_size);
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var regex = rules.lookup (signature);
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if (regex == null || blacklist.find (regex) != null)
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continue;
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if (check_rule (regex, uri, request_uri, page_uri))
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return Directive.BLOCK;
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blacklist.prepend (regex);
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}
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return null;
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}
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}
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}
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