CppCommon 1.0.5.0
C++ Common Library
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uuid.cpp
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1
9#include "system/uuid.h"
10
11#include "memory/memory.h"
12
13#if defined(__MSYS__) || defined(_WIN32) || defined(_WIN64)
14#include <windows.h>
15#include <rpc.h>
16#elif defined(unix) || defined(__unix) || defined(__unix__) || defined(__APPLE__)
17#include <uuid/uuid.h>
18#endif
19
20namespace CppCommon {
21
22std::string UUID::string() const
23{
24 const char* digits = "0123456789abcdef";
25
26 std::string result(36, '0');
27
28 int index = 0;
29 for (auto value : _data)
30 {
31 result[index++] = digits[(value >> 4) & 0x0F];
32 result[index++] = digits[(value >> 0) & 0x0F];
33 if ((index == 8) || (index == 13) || (index == 18) || (index == 23))
34 result[index++] = '-';
35 }
36
37 return result;
38}
39
40UUID UUID::Sequential()
41{
42 UUID result;
43#if defined(__MSYS__) || defined(_WIN32) || defined(_WIN64)
44 ::UUID uuid;
45 if (UuidCreateSequential(&uuid) != RPC_S_OK)
46 throwex SystemException("Cannot generate sequential UUID!");
47
48 result._data[0] = (uuid.Data1 >> 24) & 0xFF;
49 result._data[1] = (uuid.Data1 >> 16) & 0xFF;
50 result._data[2] = (uuid.Data1 >> 8) & 0xFF;
51 result._data[3] = (uuid.Data1 >> 0) & 0xFF;
52
53 result._data[4] = (uuid.Data2 >> 8) & 0xFF;
54 result._data[5] = (uuid.Data2 >> 0) & 0xFF;
55
56 result._data[6] = (uuid.Data3 >> 8) & 0xFF;
57 result._data[7] = (uuid.Data3 >> 0) & 0xFF;
58
59 result._data[8] = uuid.Data4[0];
60 result._data[9] = uuid.Data4[1];
61
62 result._data[10] = uuid.Data4[2];
63 result._data[11] = uuid.Data4[3];
64 result._data[12] = uuid.Data4[4];
65 result._data[13] = uuid.Data4[5];
66 result._data[14] = uuid.Data4[6];
67 result._data[15] = uuid.Data4[7];
68#elif defined(unix) || defined(__unix) || defined(__unix__) || defined(__APPLE__)
69 uuid_t uuid;
70 uuid_generate_time(uuid);
71
72 result._data[0] = uuid[0];
73 result._data[1] = uuid[1];
74 result._data[2] = uuid[2];
75 result._data[3] = uuid[3];
76
77 result._data[4] = uuid[4];
78 result._data[5] = uuid[5];
79
80 result._data[6] = uuid[6];
81 result._data[7] = uuid[7];
82
83 result._data[8] = uuid[8];
84 result._data[9] = uuid[9];
85
86 result._data[10] = uuid[10];
87 result._data[11] = uuid[11];
88 result._data[12] = uuid[12];
89 result._data[13] = uuid[13];
90 result._data[14] = uuid[14];
91 result._data[15] = uuid[15];
92#endif
93 return result;
94}
95
96UUID UUID::Random()
97{
98 UUID result;
99#if defined(__MSYS__) || defined(_WIN32) || defined(_WIN64)
100 ::UUID uuid;
101 if (UuidCreate(&uuid) != RPC_S_OK)
102 throwex SystemException("Cannot generate random UUID!");
103
104 result._data[0] = (uuid.Data1 >> 24) & 0xFF;
105 result._data[1] = (uuid.Data1 >> 16) & 0xFF;
106 result._data[2] = (uuid.Data1 >> 8) & 0xFF;
107 result._data[3] = (uuid.Data1 >> 0) & 0xFF;
108
109 result._data[4] = (uuid.Data2 >> 8) & 0xFF;
110 result._data[5] = (uuid.Data2 >> 0) & 0xFF;
111
112 result._data[6] = (uuid.Data3 >> 8) & 0xFF;
113 result._data[7] = (uuid.Data3 >> 0) & 0xFF;
114
115 result._data[8] = uuid.Data4[0];
116 result._data[9] = uuid.Data4[1];
117
118 result._data[10] = uuid.Data4[2];
119 result._data[11] = uuid.Data4[3];
120 result._data[12] = uuid.Data4[4];
121 result._data[13] = uuid.Data4[5];
122 result._data[14] = uuid.Data4[6];
123 result._data[15] = uuid.Data4[7];
124#elif defined(unix) || defined(__unix) || defined(__unix__) || defined(__APPLE__)
125 uuid_t uuid;
126 uuid_generate_random(uuid);
127
128 result._data[0] = uuid[0];
129 result._data[1] = uuid[1];
130 result._data[2] = uuid[2];
131 result._data[3] = uuid[3];
132
133 result._data[4] = uuid[4];
134 result._data[5] = uuid[5];
135
136 result._data[6] = uuid[6];
137 result._data[7] = uuid[7];
138
139 result._data[8] = uuid[8];
140 result._data[9] = uuid[9];
141
142 result._data[10] = uuid[10];
143 result._data[11] = uuid[11];
144 result._data[12] = uuid[12];
145 result._data[13] = uuid[13];
146 result._data[14] = uuid[14];
147 result._data[15] = uuid[15];
148#endif
149 return result;
150}
151
152UUID UUID::Secure()
153{
154 UUID result;
155 Memory::CryptoFill(result._data.data(), result._data.size());
156 return result;
157}
158
159} // namespace CppCommon
CppCommon::Memory::CryptoFill
static void CryptoFill(void *buffer, size_t size)
Fill the given memory buffer with cryptographic strong random bytes.
Definition memory.cpp:136
CppCommon::SystemException
System exception.
Definition exceptions.h:107
CppCommon::UUID
Universally unique identifier (UUID)
Definition uuid.h:36
CppCommon::UUID::string
std::string string() const
Get string from the current UUID in format "00000000-0000-0000-0000-000000000000".
Definition uuid.cpp:22
CppCommon::UUID::Random
static UUID Random()
Generate random UUID4 (randomly or pseudo-randomly generated version)
Definition uuid.cpp:96
CppCommon::UUID::Sequential
static UUID Sequential()
Generate sequential UUID1 (time based version)
Definition uuid.cpp:40
CppCommon::UUID::Secure
static UUID Secure()
Generate secure UUID4 (secure generated version)
Definition uuid.cpp:152
CppCommon::UUID::UUID
constexpr UUID()
Default constructor.
Definition uuid.h:39
throwex
#define throwex
Throw extended exception macro.
Definition exceptions.h:23
memory.h
Memory management definition.
CppCommon
C++ Common project definitions.
Definition token_bucket.h:15
uuid.h
Universally unique identifier (UUID) definition.
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