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
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
|
/*
* ZeroTier One - Network Virtualization Everywhere
* Copyright (C) 2011-2017 ZeroTier, Inc. https://www.zerotier.com/
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* --
*
* You can be released from the requirements of the license by purchasing
* a commercial license. Buying such a license is mandatory as soon as you
* develop commercial closed-source software that incorporates or links
* directly against ZeroTier software without disclosing the source code
* of your own application.
*/
#ifndef ZT_ADDRESS_HPP
#define ZT_ADDRESS_HPP
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <string>
#include "Constants.hpp"
#include "Utils.hpp"
#include "Buffer.hpp"
namespace ZeroTier {
/**
* A ZeroTier address
*/
class Address
{
public:
Address() : _a(0) {}
Address(const Address &a) : _a(a._a) {}
Address(uint64_t a) : _a(a & 0xffffffffffULL) {}
/**
* @param bits Raw address -- 5 bytes, big-endian byte order
* @param len Length of array
*/
Address(const void *bits,unsigned int len)
{
setTo(bits,len);
}
inline Address &operator=(const Address &a)
{
_a = a._a;
return *this;
}
inline Address &operator=(const uint64_t a)
{
_a = (a & 0xffffffffffULL);
return *this;
}
/**
* @param bits Raw address -- 5 bytes, big-endian byte order
* @param len Length of array
*/
inline void setTo(const void *bits,unsigned int len)
{
if (len < ZT_ADDRESS_LENGTH) {
_a = 0;
return;
}
const unsigned char *b = (const unsigned char *)bits;
uint64_t a = ((uint64_t)*b++) << 32;
a |= ((uint64_t)*b++) << 24;
a |= ((uint64_t)*b++) << 16;
a |= ((uint64_t)*b++) << 8;
a |= ((uint64_t)*b);
_a = a;
}
/**
* @param bits Buffer to hold 5-byte address in big-endian byte order
* @param len Length of array
*/
inline void copyTo(void *bits,unsigned int len) const
{
if (len < ZT_ADDRESS_LENGTH)
return;
unsigned char *b = (unsigned char *)bits;
*(b++) = (unsigned char)((_a >> 32) & 0xff);
*(b++) = (unsigned char)((_a >> 24) & 0xff);
*(b++) = (unsigned char)((_a >> 16) & 0xff);
*(b++) = (unsigned char)((_a >> 8) & 0xff);
*b = (unsigned char)(_a & 0xff);
}
/**
* Append to a buffer in big-endian byte order
*
* @param b Buffer to append to
*/
template<unsigned int C>
inline void appendTo(Buffer<C> &b) const
{
unsigned char *p = (unsigned char *)b.appendField(ZT_ADDRESS_LENGTH);
*(p++) = (unsigned char)((_a >> 32) & 0xff);
*(p++) = (unsigned char)((_a >> 24) & 0xff);
*(p++) = (unsigned char)((_a >> 16) & 0xff);
*(p++) = (unsigned char)((_a >> 8) & 0xff);
*p = (unsigned char)(_a & 0xff);
}
/**
* @return Integer containing address (0 to 2^40)
*/
inline uint64_t toInt() const
{
return _a;
}
/**
* @return Hash code for use with Hashtable
*/
inline unsigned long hashCode() const
{
return (unsigned long)_a;
}
/**
* @return Hexadecimal string
*/
inline char *toString(char buf[11]) const
{
return Utils::hex10(_a,buf);
}
/**
* @return True if this address is not zero
*/
inline operator bool() const { return (_a != 0); }
/**
* Set to null/zero
*/
inline void zero() { _a = 0; }
/**
* Check if this address is reserved
*
* The all-zero null address and any address beginning with 0xff are
* reserved. (0xff is reserved for future use to designate possibly
* longer addresses, addresses based on IPv6 innards, etc.)
*
* @return True if address is reserved and may not be used
*/
inline bool isReserved() const
{
return ((!_a)||((_a >> 32) == ZT_ADDRESS_RESERVED_PREFIX));
}
/**
* @param i Value from 0 to 4 (inclusive)
* @return Byte at said position (address interpreted in big-endian order)
*/
inline unsigned char operator[](unsigned int i) const { return (unsigned char)((_a >> (32 - (i * 8))) & 0xff); }
inline bool operator==(const uint64_t &a) const { return (_a == (a & 0xffffffffffULL)); }
inline bool operator!=(const uint64_t &a) const { return (_a != (a & 0xffffffffffULL)); }
inline bool operator>(const uint64_t &a) const { return (_a > (a & 0xffffffffffULL)); }
inline bool operator<(const uint64_t &a) const { return (_a < (a & 0xffffffffffULL)); }
inline bool operator>=(const uint64_t &a) const { return (_a >= (a & 0xffffffffffULL)); }
inline bool operator<=(const uint64_t &a) const { return (_a <= (a & 0xffffffffffULL)); }
inline bool operator==(const Address &a) const { return (_a == a._a); }
inline bool operator!=(const Address &a) const { return (_a != a._a); }
inline bool operator>(const Address &a) const { return (_a > a._a); }
inline bool operator<(const Address &a) const { return (_a < a._a); }
inline bool operator>=(const Address &a) const { return (_a >= a._a); }
inline bool operator<=(const Address &a) const { return (_a <= a._a); }
private:
uint64_t _a;
};
} // namespace ZeroTier
#endif
|
