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14 package org.eclipse.jetty.util;
15
16 import java.util.BitSet;
17 import java.util.HashMap;
18 import java.util.Map;
19 import java.util.StringTokenizer;
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39 public class IPAddressMap<TYPE> extends HashMap<String, TYPE>
40 {
41 private final HashMap<String,IPAddrPattern> _patterns = new HashMap<String,IPAddrPattern>();
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45
46 public IPAddressMap()
47 {
48 super(11);
49 }
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56 public IPAddressMap(int capacity)
57 {
58 super (capacity);
59 }
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67 @Override
68 public TYPE put(String addrSpec, TYPE object)
69 throws IllegalArgumentException
70 {
71 if (addrSpec == null || addrSpec.trim().length() == 0)
72 throw new IllegalArgumentException("Invalid IP address pattern: "+addrSpec);
73
74 String spec = addrSpec.trim();
75 if (_patterns.get(spec) == null)
76 _patterns.put(spec,new IPAddrPattern(spec));
77
78 return super.put(spec, object);
79 }
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91 @Override
92 public TYPE get(Object key)
93 {
94 return super.get(key);
95 }
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105 public TYPE match(String addr)
106 {
107 Map.Entry<String, TYPE> entry = getMatch(addr);
108 return entry==null ? null : entry.getValue();
109 }
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119 public Map.Entry<String, TYPE> getMatch(String addr)
120 {
121 if (addr != null)
122 {
123 for(Map.Entry<String, TYPE> entry: super.entrySet())
124 {
125 if (_patterns.get(entry.getKey()).match(addr))
126 {
127 return entry;
128 }
129 }
130 }
131 return null;
132 }
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142 public Object getLazyMatches(String addr)
143 {
144 if (addr == null)
145 return LazyList.getList(super.entrySet());
146
147 Object entries = null;
148 for(Map.Entry<String, TYPE> entry: super.entrySet())
149 {
150 if (_patterns.get(entry.getKey()).match(addr))
151 {
152 entries = LazyList.add(entries,entry);
153 }
154 }
155 return entries;
156 }
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165 private static class IPAddrPattern
166 {
167 private final OctetPattern[] _octets = new OctetPattern[4];
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175 public IPAddrPattern(String value)
176 throws IllegalArgumentException
177 {
178 if (value == null || value.trim().length() == 0)
179 throw new IllegalArgumentException("Invalid IP address pattern: "+value);
180
181 try
182 {
183 StringTokenizer parts = new StringTokenizer(value, ".");
184
185 String part;
186 for (int idx=0; idx<4; idx++)
187 {
188 part = parts.hasMoreTokens() ? parts.nextToken().trim() : "0-255";
189
190 int len = part.length();
191 if (len == 0 && parts.hasMoreTokens())
192 throw new IllegalArgumentException("Invalid IP address pattern: "+value);
193
194 _octets[idx] = new OctetPattern(len==0 ? "0-255" : part);
195 }
196 }
197 catch (IllegalArgumentException ex)
198 {
199 throw new IllegalArgumentException("Invalid IP address pattern: "+value, ex);
200 }
201 }
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212 public boolean match(String value)
213 throws IllegalArgumentException
214 {
215 if (value == null || value.trim().length() == 0)
216 throw new IllegalArgumentException("Invalid IP address: "+value);
217
218 try
219 {
220 StringTokenizer parts = new StringTokenizer(value, ".");
221
222 boolean result = true;
223 for (int idx=0; idx<4; idx++)
224 {
225 if (!parts.hasMoreTokens())
226 throw new IllegalArgumentException("Invalid IP address: "+value);
227
228 if (!(result &= _octets[idx].match(parts.nextToken())))
229 break;
230 }
231 return result;
232 }
233 catch (IllegalArgumentException ex)
234 {
235 throw new IllegalArgumentException("Invalid IP address: "+value, ex);
236 }
237 }
238 }
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247 private static class OctetPattern extends BitSet
248 {
249 private final BitSet _mask = new BitSet(256);
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258 public OctetPattern(String octetSpec)
259 throws IllegalArgumentException
260 {
261 try
262 {
263 if (octetSpec != null)
264 {
265 String spec = octetSpec.trim();
266 if(spec.length() == 0)
267 {
268 _mask.set(0,255);
269 }
270 else
271 {
272 StringTokenizer parts = new StringTokenizer(spec,",");
273 while (parts.hasMoreTokens())
274 {
275 String part = parts.nextToken().trim();
276 if (part.length() > 0)
277 {
278 if (part.indexOf('-') < 0)
279 {
280 Integer value = Integer.valueOf(part);
281 _mask.set(value);
282 }
283 else
284 {
285 int low = 0, high = 255;
286
287 String[] bounds = part.split("-",-2);
288 if (bounds.length != 2)
289 {
290 throw new IllegalArgumentException("Invalid octet spec: "+octetSpec);
291 }
292
293 if (bounds[0].length() > 0)
294 {
295 low = Integer.parseInt(bounds[0]);
296 }
297 if (bounds[1].length() > 0)
298 {
299 high = Integer.parseInt(bounds[1]);
300 }
301
302 if (low > high)
303 {
304 throw new IllegalArgumentException("Invalid octet spec: "+octetSpec);
305 }
306
307 _mask.set(low, high+1);
308 }
309 }
310 }
311 }
312 }
313 }
314 catch (NumberFormatException ex)
315 {
316 throw new IllegalArgumentException("Invalid octet spec: "+octetSpec, ex);
317 }
318 }
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328 public boolean match(String value)
329 throws IllegalArgumentException
330 {
331 if (value == null || value.trim().length() == 0)
332 throw new IllegalArgumentException("Invalid octet: "+value);
333
334 try
335 {
336 int number = Integer.parseInt(value);
337 return match(number);
338 }
339 catch (NumberFormatException ex)
340 {
341 throw new IllegalArgumentException("Invalid octet: "+value);
342 }
343 }
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353 public boolean match(int number)
354 throws IllegalArgumentException
355 {
356 if (number < 0 || number > 255)
357 throw new IllegalArgumentException("Invalid octet: "+number);
358
359 return _mask.get(number);
360 }
361 }
362 }