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annotate src/org/eclipse/jetty/util/IPAddressMap.java @ 802:3428c60d7cfc

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replace jetty jars with source
author Franklin Schmidt <fschmidt@gmail.com>
date Wed, 07 Sep 2016 21:15:48 -0600
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1 //
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2 // ========================================================================
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3 // Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd.
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4 // ------------------------------------------------------------------------
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5 // All rights reserved. This program and the accompanying materials
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6 // are made available under the terms of the Eclipse Public License v1.0
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7 // and Apache License v2.0 which accompanies this distribution.
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8 //
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9 // The Eclipse Public License is available at
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10 // http://www.eclipse.org/legal/epl-v10.html
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11 //
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12 // The Apache License v2.0 is available at
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13 // http://www.opensource.org/licenses/apache2.0.php
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14 //
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15 // You may elect to redistribute this code under either of these licenses.
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16 // ========================================================================
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17 //
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18
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19 package org.eclipse.jetty.util;
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20
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21 import java.util.BitSet;
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22 import java.util.HashMap;
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23 import java.util.Map;
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24 import java.util.StringTokenizer;
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25
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26
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27 /* ------------------------------------------------------------ */
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28 /**
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29 * Internet address map to object
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30 * <p>
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31 * Internet addresses may be specified as absolute address or as a combination of
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32 * four octet wildcard specifications (a.b.c.d) that are defined as follows.
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33 * </p>
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34 * <pre>
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35 * nnn - an absolute value (0-255)
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36 * mmm-nnn - an inclusive range of absolute values,
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37 * with following shorthand notations:
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38 * nnn- => nnn-255
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39 * -nnn => 0-nnn
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40 * - => 0-255
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41 * a,b,... - a list of wildcard specifications
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42 * </pre>
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43 */
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44 @SuppressWarnings("serial")
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45 public class IPAddressMap<TYPE> extends HashMap<String, TYPE>
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46 {
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47 private final HashMap<String,IPAddrPattern> _patterns = new HashMap<String,IPAddrPattern>();
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48
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49 /* --------------------------------------------------------------- */
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50 /** Construct empty IPAddressMap.
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51 */
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52 public IPAddressMap()
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53 {
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54 super(11);
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55 }
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56
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57 /* --------------------------------------------------------------- */
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58 /** Construct empty IPAddressMap.
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59 *
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60 * @param capacity initial capacity
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61 */
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62 public IPAddressMap(int capacity)
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63 {
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64 super (capacity);
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65 }
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66
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67 /* ------------------------------------------------------------ */
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68 /**
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69 * Insert a new internet address into map
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70 *
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71 * @see java.util.HashMap#put(java.lang.Object, java.lang.Object)
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72 */
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73 @Override
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74 public TYPE put(String addrSpec, TYPE object)
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75 throws IllegalArgumentException
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76 {
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77 if (addrSpec == null || addrSpec.trim().length() == 0)
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78 throw new IllegalArgumentException("Invalid IP address pattern: "+addrSpec);
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79
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80 String spec = addrSpec.trim();
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81 if (_patterns.get(spec) == null)
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82 _patterns.put(spec,new IPAddrPattern(spec));
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83
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84 return super.put(spec, object);
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85 }
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86
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87 /* ------------------------------------------------------------ */
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88 /**
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89 * Retrieve the object mapped to the specified internet address literal
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90 *
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91 * @see java.util.HashMap#get(java.lang.Object)
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92 */
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93 @Override
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94 public TYPE get(Object key)
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95 {
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96 return super.get(key);
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97 }
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98
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99 /* ------------------------------------------------------------ */
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100 /**
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101 * Retrieve the first object that is associated with the specified
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102 * internet address by taking into account the wildcard specifications.
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103 *
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104 * @param addr internet address
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105 * @return associated object
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106 */
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107 public TYPE match(String addr)
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108 {
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109 Map.Entry<String, TYPE> entry = getMatch(addr);
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110 return entry==null ? null : entry.getValue();
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111 }
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112
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113 /* ------------------------------------------------------------ */
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114 /**
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115 * Retrieve the first map entry that is associated with the specified
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116 * internet address by taking into account the wildcard specifications.
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117 *
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118 * @param addr internet address
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119 * @return map entry associated
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120 */
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121 public Map.Entry<String, TYPE> getMatch(String addr)
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122 {
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123 if (addr != null)
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124 {
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125 for(Map.Entry<String, TYPE> entry: super.entrySet())
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126 {
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127 if (_patterns.get(entry.getKey()).match(addr))
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128 {
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129 return entry;
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130 }
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131 }
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132 }
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133 return null;
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134 }
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135
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136 /* ------------------------------------------------------------ */
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137 /**
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138 * Retrieve a lazy list of map entries associated with specified
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139 * internet address by taking into account the wildcard specifications.
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140 *
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141 * @param addr internet address
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142 * @return lazy list of map entries
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143 */
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144 public Object getLazyMatches(String addr)
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145 {
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146 if (addr == null)
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147 return LazyList.getList(super.entrySet());
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148
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149 Object entries = null;
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150 for(Map.Entry<String, TYPE> entry: super.entrySet())
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151 {
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152 if (_patterns.get(entry.getKey()).match(addr))
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153 {
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154 entries = LazyList.add(entries,entry);
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155 }
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156 }
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157 return entries;
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158 }
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159
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160 /* ------------------------------------------------------------ */
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161 /**
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162 * IPAddrPattern
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163 *
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164 * Represents internet address wildcard.
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165 * Matches the wildcard to provided internet address.
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166 */
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167 private static class IPAddrPattern
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168 {
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169 private final OctetPattern[] _octets = new OctetPattern[4];
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170 /* ------------------------------------------------------------ */
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171 /**
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172 * Create new IPAddrPattern
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173 *
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174 * @param value internet address wildcard specification
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175 * @throws IllegalArgumentException if wildcard specification is invalid
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176 */
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177 public IPAddrPattern(String value)
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178 throws IllegalArgumentException
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179 {
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180 if (value == null || value.trim().length() == 0)
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181 throw new IllegalArgumentException("Invalid IP address pattern: "+value);
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182
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183 try
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184 {
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185 StringTokenizer parts = new StringTokenizer(value, ".");
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186
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187 String part;
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188 for (int idx=0; idx<4; idx++)
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189 {
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190 part = parts.hasMoreTokens() ? parts.nextToken().trim() : "0-255";
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191
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192 int len = part.length();
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193 if (len == 0 && parts.hasMoreTokens())
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194 throw new IllegalArgumentException("Invalid IP address pattern: "+value);
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195
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196 _octets[idx] = new OctetPattern(len==0 ? "0-255" : part);
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197 }
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198 }
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199 catch (IllegalArgumentException ex)
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200 {
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201 throw new IllegalArgumentException("Invalid IP address pattern: "+value, ex);
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202 }
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203 }
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204
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205 /* ------------------------------------------------------------ */
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206 /**
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207 * Match the specified internet address against the wildcard
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208 *
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209 * @param value internet address
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210 * @return true if specified internet address matches wildcard specification
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211 *
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212 * @throws IllegalArgumentException if specified internet address is invalid
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213 */
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214 public boolean match(String value)
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215 throws IllegalArgumentException
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216 {
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217 if (value == null || value.trim().length() == 0)
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218 throw new IllegalArgumentException("Invalid IP address: "+value);
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219
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220 try
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221 {
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222 StringTokenizer parts = new StringTokenizer(value, ".");
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223
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224 boolean result = true;
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225 for (int idx=0; idx<4; idx++)
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226 {
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diff changeset
227 if (!parts.hasMoreTokens())
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228 throw new IllegalArgumentException("Invalid IP address: "+value);
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229
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230 if (!(result &= _octets[idx].match(parts.nextToken())))
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231 break;
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232 }
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233 return result;
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234 }
3428c60d7cfc replace jetty jars with source
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235 catch (IllegalArgumentException ex)
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
236 {
3428c60d7cfc replace jetty jars with source
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237 throw new IllegalArgumentException("Invalid IP address: "+value, ex);
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238 }
3428c60d7cfc replace jetty jars with source
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239 }
3428c60d7cfc replace jetty jars with source
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240 }
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241
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242 /* ------------------------------------------------------------ */
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243 /**
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244 * OctetPattern
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245 *
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246 * Represents a single octet wildcard.
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diff changeset
247 * Matches the wildcard to the specified octet value.
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248 */
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249 private static class OctetPattern extends BitSet
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250 {
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251 private final BitSet _mask = new BitSet(256);
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252
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
253 /* ------------------------------------------------------------ */
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parents:
diff changeset
254 /**
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
255 * Create new OctetPattern
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parents:
diff changeset
256 *
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
257 * @param octetSpec octet wildcard specification
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parents:
diff changeset
258 * @throws IllegalArgumentException if wildcard specification is invalid
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
259 */
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diff changeset
260 public OctetPattern(String octetSpec)
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diff changeset
261 throws IllegalArgumentException
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
262 {
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
263 try
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
264 {
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
265 if (octetSpec != null)
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
266 {
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
267 String spec = octetSpec.trim();
3428c60d7cfc replace jetty jars with source
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diff changeset
268 if(spec.length() == 0)
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
269 {
3428c60d7cfc replace jetty jars with source
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diff changeset
270 _mask.set(0,255);
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
271 }
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
272 else
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
273 {
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
274 StringTokenizer parts = new StringTokenizer(spec,",");
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
275 while (parts.hasMoreTokens())
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
276 {
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
277 String part = parts.nextToken().trim();
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
278 if (part.length() > 0)
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
279 {
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
280 if (part.indexOf('-') < 0)
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
281 {
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
282 Integer value = Integer.valueOf(part);
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
283 _mask.set(value);
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
284 }
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
285 else
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
286 {
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diff changeset
287 int low = 0, high = 255;
3428c60d7cfc replace jetty jars with source
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diff changeset
288
3428c60d7cfc replace jetty jars with source
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diff changeset
289 String[] bounds = part.split("-",-2);
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
290 if (bounds.length != 2)
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
291 {
3428c60d7cfc replace jetty jars with source
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diff changeset
292 throw new IllegalArgumentException("Invalid octet spec: "+octetSpec);
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
293 }
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
294
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
295 if (bounds[0].length() > 0)
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
296 {
3428c60d7cfc replace jetty jars with source
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diff changeset
297 low = Integer.parseInt(bounds[0]);
3428c60d7cfc replace jetty jars with source
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diff changeset
298 }
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
299 if (bounds[1].length() > 0)
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
300 {
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
301 high = Integer.parseInt(bounds[1]);
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
302 }
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
303
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
304 if (low > high)
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
305 {
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
306 throw new IllegalArgumentException("Invalid octet spec: "+octetSpec);
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
307 }
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
308
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
309 _mask.set(low, high+1);
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
310 }
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
311 }
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
312 }
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
313 }
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
314 }
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
315 }
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
316 catch (NumberFormatException ex)
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
317 {
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
318 throw new IllegalArgumentException("Invalid octet spec: "+octetSpec, ex);
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
319 }
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
320 }
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
321
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
322 /* ------------------------------------------------------------ */
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
323 /**
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
324 * Match specified octet value against the wildcard
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
325 *
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
326 * @param value octet value
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
327 * @return true if specified octet value matches the wildcard
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
328 * @throws IllegalArgumentException if specified octet value is invalid
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
329 */
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
330 public boolean match(String value)
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
331 throws IllegalArgumentException
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
332 {
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
333 if (value == null || value.trim().length() == 0)
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
334 throw new IllegalArgumentException("Invalid octet: "+value);
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
335
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
336 try
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
337 {
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
338 int number = Integer.parseInt(value);
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
339 return match(number);
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
340 }
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
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341 catch (NumberFormatException ex)
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342 {
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343 throw new IllegalArgumentException("Invalid octet: "+value);
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344 }
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345 }
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346
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347 /* ------------------------------------------------------------ */
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348 /**
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349 * Match specified octet value against the wildcard
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350 *
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351 * @param number octet value
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352 * @return true if specified octet value matches the wildcard
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353 * @throws IllegalArgumentException if specified octet value is invalid
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354 */
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355 public boolean match(int number)
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356 throws IllegalArgumentException
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357 {
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358 if (number < 0 || number > 255)
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359 throw new IllegalArgumentException("Invalid octet: "+number);
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360
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361 return _mask.get(number);
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362 }
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363 }
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364 }