87 lines
2.6 KiB
Java
87 lines
2.6 KiB
Java
/*
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* Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import java.util.ArrayList;
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import java.util.List;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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/**
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* Matches the krb5 debug output:
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* >>> KDCCommunication: kdc=host UDP:11555, timeout=100,Attempt =1, #bytes=138
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*
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* Example:
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* CommMatcher cm = new CommMatcher();
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* cm.addPort(12345).addPort(23456);
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* for (String line : debugOutput) {
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* if (cm.match(line)) {
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* println("KDC: %c, %s, Timeout: %d\n",
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* cm.kdc(), cm.protocol(), cm.timeout());
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* }
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* }
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*/
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public class CommMatcher {
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static final Pattern re = Pattern.compile(
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">>> KDCCommunication: kdc=\\S+ (TCP|UDP):(\\d+), " +
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"timeout=(\\d+),Attempt\\s*=(\\d+)");
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List<Integer> kdcPorts = new ArrayList<>();
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Matcher matcher;
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/**
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* Add KDC ports one by one. The 1st KDC will be 'a' in {@link #kdc()},
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* 2nd is 'b', etc, etc.
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*/
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public CommMatcher addPort(int port) {
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if (port > 0) {
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kdcPorts.add(port);
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} else {
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kdcPorts.clear();
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}
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return this;
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}
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public boolean match(String line) {
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matcher = re.matcher(line);
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return matcher.find();
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}
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public String protocol() {
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return matcher.group(1);
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}
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public char kdc() {
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int port = Integer.parseInt(matcher.group(2));
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return (char)(kdcPorts.indexOf(port) + 'a');
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}
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public int timeout() {
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return BadKdc.toSymbolicSec(Integer.parseInt(matcher.group(3)));
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}
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public int attempt() {
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return Integer.parseInt(matcher.group(4));
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}
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}
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