1 /*
2 * Copyright 2015 The Netty Project
3 *
4 * The Netty Project licenses this file to you under the Apache License,
5 * version 2.0 (the "License"); you may not use this file except in compliance
6 * with the License. You may obtain a copy of the License at:
7 *
8 * https://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13 * License for the specific language governing permissions and limitations
14 * under the License.
15 */
16 package io.netty.handler.codec.http;
17
18 import java.util.BitSet;
19
20 /**
21 * @deprecated Duplicate of package private ${@link io.netty.handler.codec.http.cookie.CookieUtil}
22 */
23 @Deprecated
24 final class CookieUtil {
25
26 private static final BitSet VALID_COOKIE_VALUE_OCTETS = validCookieValueOctets();
27
28 private static final BitSet VALID_COOKIE_NAME_OCTETS = validCookieNameOctets(VALID_COOKIE_VALUE_OCTETS);
29
30 // US-ASCII characters excluding CTLs, whitespace, DQUOTE, comma, semicolon, and backslash
31 private static BitSet validCookieValueOctets() {
32 BitSet bits = new BitSet(8);
33 for (int i = 35; i < 127; i++) {
34 // US-ASCII characters excluding CTLs (%x00-1F / %x7F)
35 bits.set(i);
36 }
37 bits.set('"', false); // exclude DQUOTE = %x22
38 bits.set(',', false); // exclude comma = %x2C
39 bits.set(';', false); // exclude semicolon = %x3B
40 bits.set('\\', false); // exclude backslash = %x5C
41 return bits;
42 }
43
44 // token = 1*<any CHAR except CTLs or separators>
45 // separators = "(" | ")" | "<" | ">" | "@"
46 // | "," | ";" | ":" | "\" | <">
47 // | "/" | "[" | "]" | "?" | "="
48 // | "{" | "}" | SP | HT
49 private static BitSet validCookieNameOctets(BitSet validCookieValueOctets) {
50 BitSet bits = new BitSet(8);
51 bits.or(validCookieValueOctets);
52 bits.set('(', false);
53 bits.set(')', false);
54 bits.set('<', false);
55 bits.set('>', false);
56 bits.set('@', false);
57 bits.set(':', false);
58 bits.set('/', false);
59 bits.set('[', false);
60 bits.set(']', false);
61 bits.set('?', false);
62 bits.set('=', false);
63 bits.set('{', false);
64 bits.set('}', false);
65 bits.set(' ', false);
66 bits.set('\t', false);
67 return bits;
68 }
69
70 static int firstInvalidCookieNameOctet(CharSequence cs) {
71 return firstInvalidOctet(cs, VALID_COOKIE_NAME_OCTETS);
72 }
73
74 static int firstInvalidCookieValueOctet(CharSequence cs) {
75 return firstInvalidOctet(cs, VALID_COOKIE_VALUE_OCTETS);
76 }
77
78 static int firstInvalidOctet(CharSequence cs, BitSet bits) {
79 for (int i = 0; i < cs.length(); i++) {
80 char c = cs.charAt(i);
81 if (!bits.get(c)) {
82 return i;
83 }
84 }
85 return -1;
86 }
87
88 static CharSequence unwrapValue(CharSequence cs) {
89 final int len = cs.length();
90 if (len > 0 && cs.charAt(0) == '"') {
91 if (len >= 2 && cs.charAt(len - 1) == '"') {
92 // properly balanced
93 return len == 2 ? "" : cs.subSequence(1, len - 1);
94 } else {
95 return null;
96 }
97 }
98 return cs;
99 }
100
101 private CookieUtil() {
102 // Unused
103 }
104 }
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