1 /* |
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2 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 */ |
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23 |
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24 import java.util.ArrayList; |
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25 import java.util.List; |
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26 import java.util.regex.Matcher; |
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27 import java.util.regex.Pattern; |
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28 |
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29 /** |
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30 * Matches the krb5 debug output: |
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31 * >>> KDCCommunication: kdc=host UDP:11555, timeout=100,Attempt =1, #bytes=138 |
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32 * |
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33 * Example: |
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34 * CommMatcher cm = new CommMatcher(); |
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35 * cm.addPort(12345).addPort(23456); |
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36 * for (String line : debugOutput) { |
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37 * if (cm.match(line)) { |
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38 * println("KDC: %c, %s, Timeout: %d\n", |
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39 * cm.kdc(), cm.protocol(), cm.timeout()); |
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40 * } |
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41 * } |
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42 */ |
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43 public class CommMatcher { |
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44 |
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45 static final Pattern re = Pattern.compile( |
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46 ">>> KDCCommunication: kdc=\\S+ (TCP|UDP):(\\d+), " + |
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47 "timeout=(\\d+),Attempt\\s*=(\\d+)"); |
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48 |
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49 List<Integer> kdcPorts = new ArrayList<>(); |
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50 Matcher matcher; |
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51 |
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52 /** |
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53 * Add KDC ports one by one. The 1st KDC will be 'a' in {@link #kdc()}, |
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54 * 2nd is 'b', etc, etc. |
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55 */ |
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56 public CommMatcher addPort(int port) { |
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57 if (port > 0) { |
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58 kdcPorts.add(port); |
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59 } else { |
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60 kdcPorts.clear(); |
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61 } |
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62 return this; |
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63 } |
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64 |
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65 public boolean match(String line) { |
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66 matcher = re.matcher(line); |
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67 return matcher.find(); |
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68 } |
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69 |
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70 public String protocol() { |
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71 return matcher.group(1); |
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72 } |
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73 |
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74 public char kdc() { |
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75 int port = Integer.parseInt(matcher.group(2)); |
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76 return (char)(kdcPorts.indexOf(port) + 'a'); |
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77 } |
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78 |
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79 public int timeout() { |
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80 return BadKdc.toSymbolicSec(Integer.parseInt(matcher.group(3))); |
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81 } |
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82 |
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83 public int attempt() { |
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84 return Integer.parseInt(matcher.group(4)); |
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85 } |
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86 } |
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