1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
|
/*
* Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
* Copyright (C) 2009 Google Inc. All rights reserved.
* Copyright (C) 2011 Apple Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Apple Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <wtf/HashSet.h>
#include <wtf/WallTime.h>
#include <wtf/text/StringHash.h>
namespace WebCore {
typedef HashSet<String, ASCIICaseInsensitiveHash> HTTPHeaderSet;
enum class HTTPHeaderName;
enum class XSSProtectionDisposition {
Invalid,
Disabled,
Enabled,
BlockEnabled,
};
enum class ContentTypeOptionsDisposition : bool {
None,
Nosniff
};
enum class XFrameOptionsDisposition : uint8_t {
None,
Deny,
SameOrigin,
AllowAll,
Invalid,
Conflict
};
enum class CrossOriginResourcePolicy : uint8_t {
None,
CrossOrigin,
SameOrigin,
SameSite,
Invalid
};
bool isValidReasonPhrase(const String&);
bool isValidHTTPHeaderValue(const String&);
bool isValidAcceptHeaderValue(const String&);
bool isValidLanguageHeaderValue(const String&);
#if USE(GLIB)
WEBCORE_EXPORT bool isValidUserAgentHeaderValue(const String&);
#endif
bool isValidHTTPToken(const String&);
bool isValidHTTPToken(StringView);
std::optional<WallTime> parseHTTPDate(const String&);
String filenameFromHTTPContentDisposition(StringView);
WEBCORE_EXPORT String extractMIMETypeFromMediaType(const String&);
String extractCharsetFromMediaType(const String&);
XSSProtectionDisposition parseXSSProtectionHeader(const String& header, String& failureReason, unsigned& failurePosition, String& reportURL);
AtomString extractReasonPhraseFromHTTPStatusLine(const String&);
WEBCORE_EXPORT XFrameOptionsDisposition parseXFrameOptionsHeader(StringView);
std::optional<std::pair<StringView, HashMap<String, String>>> parseStructuredFieldValue(StringView header);
// -1 could be set to one of the return parameters to indicate the value is not specified.
WEBCORE_EXPORT bool parseRange(const String&, long long& rangeOffset, long long& rangeEnd, long long& rangeSuffixLength);
ContentTypeOptionsDisposition parseContentTypeOptionsHeader(StringView header);
// Parsing Complete HTTP Messages.
size_t parseHTTPHeader(const uint8_t* data, size_t length, String& failureReason, StringView& nameStr, String& valueStr, bool strict = true);
size_t parseHTTPRequestBody(const uint8_t* data, size_t length, Vector<uint8_t>& body);
// HTTP Header routine as per https://fetch.spec.whatwg.org/#terminology-headers
bool isForbiddenHeaderName(const String&);
bool isNoCORSSafelistedRequestHeaderName(const String&);
bool isPriviledgedNoCORSRequestHeaderName(const String&);
bool isForbiddenResponseHeaderName(const String&);
bool isForbiddenMethod(const String&);
bool isSimpleHeader(const String& name, const String& value);
bool isCrossOriginSafeHeader(HTTPHeaderName, const HTTPHeaderSet&);
bool isCrossOriginSafeHeader(const String&, const HTTPHeaderSet&);
bool isCrossOriginSafeRequestHeader(HTTPHeaderName, const String&);
String normalizeHTTPMethod(const String&);
bool isSafeMethod(const String&);
WEBCORE_EXPORT CrossOriginResourcePolicy parseCrossOriginResourcePolicyHeader(StringView);
inline bool isHTTPSpace(UChar character)
{
return character <= ' ' && (character == ' ' || character == '\n' || character == '\t' || character == '\r');
}
// Strip leading and trailing whitespace as defined in https://fetch.spec.whatwg.org/#concept-header-value-normalize.
inline String stripLeadingAndTrailingHTTPSpaces(const String& string)
{
return string.stripLeadingAndTrailingCharacters(isHTTPSpace);
}
inline StringView stripLeadingAndTrailingHTTPSpaces(StringView string)
{
return string.stripLeadingAndTrailingMatchedCharacters(isHTTPSpace);
}
template<class HashType>
bool addToAccessControlAllowList(const String& string, unsigned start, unsigned end, HashSet<String, HashType>& set)
{
StringImpl* stringImpl = string.impl();
if (!stringImpl)
return true;
// Skip white space from start.
while (start <= end && isHTTPSpace((*stringImpl)[start]))
++start;
// only white space
if (start > end)
return true;
// Skip white space from end.
while (end && isHTTPSpace((*stringImpl)[end]))
--end;
auto token = string.substring(start, end - start + 1);
if (!isValidHTTPToken(token))
return false;
set.add(WTFMove(token));
return true;
}
template<class HashType = DefaultHash<String>>
std::optional<HashSet<String, HashType>> parseAccessControlAllowList(const String& string)
{
HashSet<String, HashType> set;
unsigned start = 0;
size_t end;
while ((end = string.find(',', start)) != notFound) {
if (start != end) {
if (!addToAccessControlAllowList(string, start, end - 1, set))
return { };
}
start = end + 1;
}
if (start != string.length()) {
if (!addToAccessControlAllowList(string, start, string.length() - 1, set))
return { };
}
return set;
}
}
|
