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Java > Open Source Codes > com > quadcap > http > server22 > CookieParser


1 package com.quadcap.http.server22;
2
3 /* Copyright 1998 - 2003 Quadcap Software. All rights reserved.
4  *
5  * This software is distributed under the Quadcap Free Software License.
6  * This software may be used or modified for any purpose, personal or
7  * commercial. Open Source redistributions are permitted. Commercial
8  * redistribution of larger works derived from, or works which bundle
9  * this software requires a "Commercial Redistribution License"; see
10  * http://www.quadcap.com/purchase.
11  *
12  * Redistributions qualify as "Open Source" under one of the following terms:
13  *
14  * Redistributions are made at no charge beyond the reasonable cost of
15  * materials and delivery.
16  *
17  * Redistributions are accompanied by a copy of the Source Code or by an
18  * irrevocable offer to provide a copy of the Source Code for up to three
19  * years at the cost of materials and delivery. Such redistributions
20  * must allow further use, modification, and redistribution of the Source
21  * Code under substantially the same terms as this license.
22  *
23  * Redistributions of source code must retain the copyright notices as they
24  * appear in each source code file, these license terms, and the
25  * disclaimer/limitation of liability set forth as paragraph 6 below.
26  *
27  * Redistributions in binary form must reproduce this Copyright Notice,
28  * these license terms, and the disclaimer/limitation of liability set
29  * forth as paragraph 6 below, in the documentation and/or other materials
30  * provided with the distribution.
31  *
32  * The Software is provided on an "AS IS" basis. No warranty is
33  * provided that the Software is free of defects, or fit for a
34  * particular purpose.
35  *
36  * Limitation of Liability. Quadcap Software shall not be liable
37  * for any damages suffered by the Licensee or any third party resulting
38  * from use of the Software.
39  */
40
41 import java.io.ByteArrayInputStream JavaDoc;
42 import java.io.IOException JavaDoc;
43
44 import java.util.Vector JavaDoc;
45
46 import javax.servlet.http.Cookie JavaDoc;
47
48 import com.quadcap.util.text.OctetMap;
49 import com.quadcap.util.text.Scanner;
50
51 import com.quadcap.util.Debug;
52
53 /**
54  * Parse a string containing HTTP cookies.
55  *
56  * @author Stan Bailes
57  */
58 public class CookieParser {
59     Scanner s = null;
60
61     public CookieParser(String JavaDoc cookieHdr) {
62         if (cookieHdr == null) cookieHdr = "";
63         ByteArrayInputStream JavaDoc bis =
64             new ByteArrayInputStream JavaDoc(cookieHdr.getBytes());
65         s = new Scanner(bis);
66     }
67
68     Cookie JavaDoc[] parseCookies() throws IOException JavaDoc {
69         Vector JavaDoc cookieVec = new Vector JavaDoc();
70         Cookie JavaDoc cookie = null;
71         s.skipWhile(OctetMap.wsChars);
72         while (OctetMap.tokenChars.has(s.peek())) {
73             String JavaDoc name = s.parseWhile(OctetMap.tokenChars);
74             String JavaDoc val = null;
75             if (s.peek() == '=') {
76                 s.matchChar('=');
77                 if (s.peek() == '"') {
78                     s.matchChar('"');
79                     val = s.parseUntil(OctetMap.dquoteChar);
80                     s.matchChar('"');
81                 } else {
82                     val = s.parseWhile(OctetMap.tokenChars);
83                 }
84             }
85             s.skipWhile(OctetMap.wsChars);
86             if (s.peek() == ';') {
87                 s.matchChar(';');
88                 s.skipWhile(OctetMap.wsChars);
89             }
90
91             if (name.charAt(0) == '$' && cookie != null) {
92                 if (name.equals("$Path")) {
93                     cookie.setPath(val);
94                 } else if (name.equals("$Domain")) {
95                     cookie.setDomain(val);
96                 }
97             } else {
98         //#ifdef DEBUG
99 if (Trace.level() > 2) {
100             Debug.println("Cookie: " + name + " = " + val);
101         }
102         //#endif
103 cookie = new Cookie JavaDoc(name, val);
104                 cookieVec.addElement(cookie);
105             }
106         }
107         Cookie JavaDoc[] cookies = new Cookie JavaDoc[cookieVec.size()];
108         for (int i = 0; i < cookies.length; i++) {
109             cookies[i] = (Cookie JavaDoc)cookieVec.elementAt(i);
110         }
111         return cookies;
112     }
113 }
114
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