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
|
/*
* Copyright (C) 2008 Collin Jackson <collinj@webkit.org>
*
* 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.
*
* 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 INC. OR
* 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 <optional>
#include <variant>
#include <wtf/Forward.h>
#include <wtf/HashTraits.h>
#if OS(WINDOWS)
#include <winsock2.h>
#include <ws2tcpip.h>
#else
#include <netinet/in.h>
#endif
namespace WebCore {
class IPAddress {
public:
explicit IPAddress(const struct in_addr& address)
: m_address(address)
{
}
explicit IPAddress(const struct in6_addr& address)
: m_address(address)
{
}
explicit IPAddress(WTF::HashTableEmptyValueType)
: m_address(WTF::HashTableEmptyValue)
{
}
WEBCORE_EXPORT IPAddress isolatedCopy() const;
WEBCORE_EXPORT unsigned matchingNetMaskLength(const IPAddress& other) const;
WEBCORE_EXPORT static std::optional<IPAddress> fromString(const String&);
bool isIPv4() const { return std::holds_alternative<struct in_addr>(m_address); }
bool isIPv6() const { return std::holds_alternative<struct in6_addr>(m_address); }
bool containsOnlyZeros() const;
const struct in_addr& ipv4Address() const { return std::get<struct in_addr>(m_address); }
const struct in6_addr& ipv6Address() const { return std::get<struct in6_addr>(m_address); }
enum class ComparisonResult : uint8_t {
CannotCompare,
Less,
Equal,
Greater
};
ComparisonResult compare(const IPAddress& other) const
{
auto comparisonResult = [](int result) {
if (!result)
return ComparisonResult::Equal;
if (result < 0)
return ComparisonResult::Less;
return ComparisonResult::Greater;
};
if (isIPv4() && other.isIPv4())
return comparisonResult(memcmp(&ipv4Address(), &other.ipv4Address(), sizeof(struct in_addr)));
if (isIPv6() && other.isIPv6())
return comparisonResult(memcmp(&ipv6Address(), &other.ipv6Address(), sizeof(struct in6_addr)));
return ComparisonResult::CannotCompare;
}
bool operator<(const IPAddress& other) const { return compare(other) == ComparisonResult::Less; }
bool operator>(const IPAddress& other) const { return compare(other) == ComparisonResult::Greater; }
bool operator==(const IPAddress& other) const { return compare(other) == ComparisonResult::Equal; }
private:
std::variant<WTF::HashTableEmptyValueType, struct in_addr, struct in6_addr> m_address;
};
enum class DNSError { Unknown, CannotResolve, Cancelled };
using DNSAddressesOrError = Expected<Vector<IPAddress>, DNSError>;
using DNSCompletionHandler = CompletionHandler<void(DNSAddressesOrError&&)>;
WEBCORE_EXPORT void prefetchDNS(const String& hostname);
WEBCORE_EXPORT void resolveDNS(const String& hostname, uint64_t identifier, DNSCompletionHandler&&);
WEBCORE_EXPORT void stopResolveDNS(uint64_t identifier);
} // namespace WebCore
namespace WTF {
template<> struct HashTraits<WebCore::IPAddress> : GenericHashTraits<WebCore::IPAddress> {
static WebCore::IPAddress emptyValue() { return WebCore::IPAddress { WTF::HashTableEmptyValue }; }
};
} // namespace WTF
|
