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19 package org.eclipse.jetty.http;
20
21 import java.nio.ByteBuffer;
22 import java.util.HashSet;
23 import java.util.Set;
24
25 import org.eclipse.jetty.util.ArrayTrie;
26 import org.eclipse.jetty.util.BufferUtil;
27 import org.eclipse.jetty.util.StringUtil;
28 import org.eclipse.jetty.util.Trie;
29
30
31
32
33
34 public class HttpField
35 {
36 public final static Trie<HttpField> CACHE = new ArrayTrie<>(1024);
37 public final static Trie<HttpField> CONTENT_TYPE = new ArrayTrie<>(512);
38
39 static
40 {
41 CACHE.put(new CachedHttpField(HttpHeader.CONNECTION,HttpHeaderValue.CLOSE));
42 CACHE.put(new CachedHttpField(HttpHeader.CONNECTION,HttpHeaderValue.KEEP_ALIVE));
43 CACHE.put(new CachedHttpField(HttpHeader.CONNECTION,HttpHeaderValue.UPGRADE));
44 CACHE.put(new CachedHttpField(HttpHeader.ACCEPT_ENCODING,"gzip"));
45 CACHE.put(new CachedHttpField(HttpHeader.ACCEPT_ENCODING,"gzip, deflate"));
46 CACHE.put(new CachedHttpField(HttpHeader.ACCEPT_ENCODING,"gzip,deflate,sdch"));
47 CACHE.put(new CachedHttpField(HttpHeader.ACCEPT_LANGUAGE,"en-US,en;q=0.5"));
48 CACHE.put(new CachedHttpField(HttpHeader.ACCEPT_LANGUAGE,"en-GB,en-US;q=0.8,en;q=0.6"));
49 CACHE.put(new CachedHttpField(HttpHeader.ACCEPT_CHARSET,"ISO-8859-1,utf-8;q=0.7,*;q=0.3"));
50 CACHE.put(new CachedHttpField(HttpHeader.ACCEPT,"*/*"));
51 CACHE.put(new CachedHttpField(HttpHeader.ACCEPT,"image/png,image/*;q=0.8,*/*;q=0.5"));
52 CACHE.put(new CachedHttpField(HttpHeader.ACCEPT,"text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8"));
53 CACHE.put(new CachedHttpField(HttpHeader.PRAGMA,"no-cache"));
54 CACHE.put(new CachedHttpField(HttpHeader.CACHE_CONTROL,"private, no-cache, no-cache=Set-Cookie, proxy-revalidate"));
55 CACHE.put(new CachedHttpField(HttpHeader.CACHE_CONTROL,"no-cache"));
56 CACHE.put(new CachedHttpField(HttpHeader.CONTENT_LENGTH,"0"));
57 CACHE.put(new CachedHttpField(HttpHeader.CONTENT_ENCODING,"gzip"));
58 CACHE.put(new CachedHttpField(HttpHeader.CONTENT_ENCODING,"deflate"));
59 CACHE.put(new CachedHttpField(HttpHeader.EXPIRES,"Fri, 01 Jan 1990 00:00:00 GMT"));
60
61
62 for (String type : new String[]{"text/plain","text/html","text/xml","text/json","application/x-www-form-urlencoded"})
63 {
64 HttpField field=new CachedHttpField(HttpHeader.CONTENT_TYPE,type);
65 CACHE.put(field);
66 CONTENT_TYPE.put(type,field);
67
68 for (String charset : new String[]{"UTF-8","ISO-8859-1"})
69 {
70 String type_charset=type+"; charset="+charset;
71 field=new CachedHttpField(HttpHeader.CONTENT_TYPE,type_charset);
72 CACHE.put(field);
73 CACHE.put(new CachedHttpField(HttpHeader.CONTENT_TYPE,type+";charset="+charset));
74 CONTENT_TYPE.put(type_charset,field);
75 CONTENT_TYPE.put(type+";charset="+charset,field);
76 }
77 }
78
79
80 Set<HttpHeader> headers = new HashSet<>();
81 for (String key:CACHE.keySet())
82 headers.add(CACHE.get(key).getHeader());
83 for (HttpHeader h:headers)
84 if (!CACHE.put(new HttpField(h,(String)null)))
85 throw new IllegalStateException("CACHE FULL");
86
87 CACHE.put(new HttpField(HttpHeader.REFERER,(String)null));
88 CACHE.put(new HttpField(HttpHeader.IF_MODIFIED_SINCE,(String)null));
89 CACHE.put(new HttpField(HttpHeader.IF_NONE_MATCH,(String)null));
90 CACHE.put(new HttpField(HttpHeader.AUTHORIZATION,(String)null));
91 CACHE.put(new HttpField(HttpHeader.COOKIE,(String)null));
92 }
93
94 private final static byte[] __colon_space = new byte[] {':',' '};
95
96 private final HttpHeader _header;
97 private final String _name;
98 private final String _value;
99
100 public HttpField(HttpHeader header, String name, String value)
101 {
102 _header = header;
103 _name = name;
104 _value = value;
105 }
106
107 public HttpField(HttpHeader header, String value)
108 {
109 this(header,header.asString(),value);
110 }
111
112
113 public HttpField(HttpHeader header, HttpHeaderValue value)
114 {
115 this(header,header.asString(),value.asString());
116 }
117
118 public HttpField(String name, String value)
119 {
120 this(HttpHeader.CACHE.get(name),name,value);
121 }
122
123 public HttpHeader getHeader()
124 {
125 return _header;
126 }
127
128 public String getName()
129 {
130 return _name;
131 }
132
133 public String getValue()
134 {
135 return _value;
136 }
137
138 public boolean contains(String value)
139 {
140 if (_value==null)
141 return false;
142
143 if (value.equalsIgnoreCase(_value))
144 return true;
145
146 String[] split = _value.split("\\s*,\\s*");
147 for (String s : split)
148 {
149 if (value.equalsIgnoreCase(s))
150 return true;
151 }
152
153 return false;
154 }
155
156
157 public int getIntValue()
158 {
159 return StringUtil.toInt(_value);
160 }
161
162 public long getLongValue()
163 {
164 return StringUtil.toLong(_value);
165 }
166
167 private static byte[] toSanitisedName(String s)
168 {
169 byte[] bytes = s.getBytes(StringUtil.__ISO_8859_1_CHARSET);
170 for (int i=bytes.length;i-->0;)
171 {
172 switch(bytes[i])
173 {
174 case '\r':
175 case '\n':
176 case ':' :
177 bytes[i]=(byte)'?';
178 }
179 }
180 return bytes;
181 }
182
183 private static byte[] toSanitisedValue(String s)
184 {
185 byte[] bytes = s.getBytes(StringUtil.__ISO_8859_1_CHARSET);
186 for (int i=bytes.length;i-->0;)
187 {
188 switch(bytes[i])
189 {
190 case '\r':
191 case '\n':
192 bytes[i]=(byte)'?';
193 }
194 }
195 return bytes;
196 }
197
198 public void putTo(ByteBuffer bufferInFillMode)
199 {
200 if (_header!=null)
201 {
202 bufferInFillMode.put(_header.getBytesColonSpace());
203 bufferInFillMode.put(toSanitisedValue(_value));
204 }
205 else
206 {
207 bufferInFillMode.put(toSanitisedName(_name));
208 bufferInFillMode.put(__colon_space);
209 bufferInFillMode.put(toSanitisedValue(_value));
210 }
211
212 BufferUtil.putCRLF(bufferInFillMode);
213 }
214
215 public void putValueTo(ByteBuffer buffer)
216 {
217 buffer.put(toSanitisedValue(_value));
218 }
219
220 @Override
221 public String toString()
222 {
223 String v=getValue();
224 return getName() + ": " + (v==null?"":v.toString());
225 }
226
227 public boolean isSame(HttpField field)
228 {
229 if (field==null)
230 return false;
231 if (field==this)
232 return true;
233 if (_header!=null && _header==field.getHeader())
234 return true;
235 if (_name.equalsIgnoreCase(field.getName()))
236 return true;
237 return false;
238 }
239
240
241
242
243
244 public static class CachedHttpField extends HttpField
245 {
246 final byte[] _bytes;
247 public CachedHttpField(HttpHeader header, String value)
248 {
249 super(header,value);
250 _bytes=new byte[header.asString().length()+2+value.length()+2];
251 System.arraycopy(header.getBytesColonSpace(),0,_bytes,0,header.asString().length()+2);
252 System.arraycopy(toSanitisedValue(value),0,_bytes,header.asString().length()+2,value.length());
253 _bytes[_bytes.length-2]='\r';
254 _bytes[_bytes.length-1]='\n';
255 }
256
257 CachedHttpField(HttpHeader header, HttpHeaderValue value)
258 {
259 this(header,value.asString());
260 }
261
262 @Override
263 public void putTo(ByteBuffer bufferInFillMode)
264 {
265 bufferInFillMode.put(_bytes);
266 }
267 }
268 }