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
|
/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT HOLDER 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 <AK/LogStream.h>
#include <AK/NetworkOrdered.h>
#include <AK/Optional.h>
#include <AK/String.h>
#include <AK/StringView.h>
#include <AK/Vector.h>
typedef u32 in_addr_t;
namespace AK {
class [[gnu::packed]] IPv4Address
{
public:
IPv4Address() { }
IPv4Address(const u8 data[4])
{
m_data[0] = data[0];
m_data[1] = data[1];
m_data[2] = data[2];
m_data[3] = data[3];
}
IPv4Address(u8 a, u8 b, u8 c, u8 d)
{
m_data[0] = a;
m_data[1] = b;
m_data[2] = c;
m_data[3] = d;
}
IPv4Address(NetworkOrdered<u32> address)
: m_data_as_u32(address)
{
}
u8 operator[](int i) const
{
ASSERT(i >= 0 && i < 4);
return m_data[i];
}
String to_string() const
{
return String::format("%u.%u.%u.%u", m_data[0], m_data[1], m_data[2], m_data[3]);
}
static Optional<IPv4Address> from_string(const StringView& string)
{
if (string.is_null())
return {};
auto parts = string.split_view('.');
u32 a;
u32 b;
u32 c;
u32 d;
if (parts.size() == 1) {
a = 0;
b = 0;
c = 0;
d = parts[0].to_uint().value_or(256);
} else if (parts.size() == 2) {
a = parts[0].to_uint().value_or(256);
b = 0;
c = 0;
d = parts[1].to_uint().value_or(256);
} else if (parts.size() == 3) {
a = parts[0].to_uint().value_or(256);
b = parts[1].to_uint().value_or(256);
c = 0;
d = parts[2].to_uint().value_or(256);
} else if (parts.size() == 4) {
a = parts[0].to_uint().value_or(256);
b = parts[1].to_uint().value_or(256);
c = parts[2].to_uint().value_or(256);
d = parts[3].to_uint().value_or(256);
} else {
return {};
}
if (a > 255 || b > 255 || c > 255 || d > 255)
return {};
return IPv4Address((u8)a, (u8)b, (u8)c, (u8)d);
}
in_addr_t to_in_addr_t() const { return m_data_as_u32; }
u32 to_u32() const { return m_data_as_u32; }
bool operator==(const IPv4Address& other) const { return m_data_as_u32 == other.m_data_as_u32; }
bool operator!=(const IPv4Address& other) const { return m_data_as_u32 != other.m_data_as_u32; }
bool is_zero() const
{
return m_data_as_u32 == 0;
}
private:
union {
u8 m_data[4];
u32 m_data_as_u32 { 0 };
};
};
static_assert(sizeof(IPv4Address) == 4);
template<>
struct Traits<IPv4Address> : public GenericTraits<IPv4Address> {
static unsigned hash(const IPv4Address& address) { return string_hash((const char*)&address, sizeof(address)); }
};
inline const LogStream& operator<<(const LogStream& stream, const IPv4Address& value)
{
return stream << value.to_string();
}
}
using AK::IPv4Address;
|
