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
|
/* EsUuid.cpp
Copyright (c) 2021 by Benjamin Hauch
Endless Sky 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.
Endless Sky 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 <https://www.gnu.org/licenses/>.
*/
#include "EsUuid.h"
#include "Logger.h"
#ifdef _WIN32
#include "text/Utf8.h"
#define STRICT
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#else
#include <uuid/uuid.h>
#endif
#include <stdexcept>
using namespace std;
namespace {
#ifndef _WIN32
constexpr size_t UUID_BUFFER_LENGTH = 37;
#endif
EsUuid::UuidType ParseUuid(const string &str)
{
EsUuid::UuidType value;
#ifdef _WIN32
auto data = Utf8::ToUTF16(str, false);
RPC_STATUS status = UuidFromStringW(reinterpret_cast<RPC_WSTR>(&data[0]), &value.id);
if(status == RPC_S_INVALID_STRING_UUID)
throw invalid_argument("Cannot convert \"" + str + "\" into a UUID");
else if(status != RPC_S_OK)
throw runtime_error("Fatal error parsing \"" + str + "\" as a UUID");
#else
auto result = uuid_parse(str.data(), value.id);
if(result == -1)
throw invalid_argument("Cannot convert \"" + str + "\" into a UUID");
else if(result != 0)
throw runtime_error("Fatal error parsing \"" + str + "\" as a UUID");
#endif
return value;
}
#ifdef _WIN32
bool IsNil(const UUID &id) noexcept
{
RPC_STATUS status;
return UuidIsNil(const_cast<UUID *>(&id), &status);
}
#else
bool IsNil(const uuid_t &id) noexcept
{
return uuid_is_null(id) == 1;
}
#endif
#ifdef _WIN32
string Serialize(const UUID &id)
{
wchar_t *buf = nullptr;
RPC_STATUS status = UuidToStringW(&id, reinterpret_cast<RPC_WSTR *>(&buf));
string result = (status == RPC_S_OK) ? Utf8::ToUTF8(buf) : string{};
if(result.empty())
Logger::LogError("Failed to serialize UUID!");
else
RpcStringFreeW(reinterpret_cast<RPC_WSTR *>(&buf));
return result;
}
#else
string Serialize(const uuid_t &id)
{
char buf[UUID_BUFFER_LENGTH];
uuid_unparse_lower(id, buf);
return buf;
}
#endif
signed int Compare(const EsUuid::UuidType &a, const EsUuid::UuidType &b)
{
#ifdef _WIN32
RPC_STATUS status;
auto result = UuidCompare(const_cast<UUID *>(&a.id), const_cast<UUID *>(&b.id), &status);
if(status != RPC_S_OK)
throw runtime_error("Fatal error comparing UUIDs \"" + Serialize(a.id) + "\" and \"" + Serialize(b.id) + "\"");
return result;
#else
return uuid_compare(a.id, b.id);
#endif
}
}
// Get a version 4 (random) Universally Unique Identifier (see IETF RFC 4122).
EsUuid::UuidType EsUuid::MakeUuid()
{
EsUuid::UuidType value;
#ifdef _WIN32
RPC_STATUS status = UuidCreate(&value.id);
if(status == RPC_S_UUID_LOCAL_ONLY)
Logger::LogError("Created locally unique UUID only");
else if(status == RPC_S_UUID_NO_ADDRESS)
throw runtime_error("Failed to create UUID");
#else
uuid_generate_random(value.id);
#endif
return value;
}
EsUuid EsUuid::FromString(const string &input)
{
return EsUuid(input);
}
// Explicitly copy the value of the other UUID.
void EsUuid::Clone(const EsUuid &other)
{
value = other.Value();
}
bool EsUuid::operator==(const EsUuid &other) const noexcept(false)
{
return Compare(Value(), other.Value()) == 0;
}
bool EsUuid::operator!=(const EsUuid &other) const noexcept(false)
{
return !(*this == other);
}
bool EsUuid::operator<(const EsUuid &other) const noexcept(false)
{
return Compare(Value(), other.Value()) < 0;
}
string EsUuid::ToString() const noexcept(false)
{
return Serialize(Value().id);
}
// Internal constructor. Note that the provided value may not be a valid v4 UUID,
// in which case an error is logged and we return a new UUID.
EsUuid::EsUuid(const string &input)
{
try {
value = ParseUuid(input);
}
catch(const invalid_argument &err)
{
Logger::LogError(err.what());
}
}
const EsUuid::UuidType &EsUuid::Value() const
{
if(IsNil(value.id))
value = MakeUuid();
return value;
}
|
