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
|
/*
* Copyright (C) 2020 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "sysdeps/env.h"
#ifdef _WIN32
#include <lmcons.h>
#include <windows.h>
#endif // _WIN32
#include <android-base/utf8.h>
namespace adb {
namespace sysdeps {
std::optional<std::string> GetEnvironmentVariable(std::string_view var) {
if (var.empty()) {
return std::nullopt;
}
#ifdef _WIN32
constexpr size_t kMaxEnvVarSize = 32767;
wchar_t wbuf[kMaxEnvVarSize];
std::wstring wvar;
if (!android::base::UTF8ToWide(var.data(), &wvar)) {
return std::nullopt;
}
auto sz = ::GetEnvironmentVariableW(wvar.data(), wbuf, sizeof(wbuf));
if (sz == 0) {
return std::nullopt;
}
std::string val;
if (!android::base::WideToUTF8(wbuf, &val)) {
return std::nullopt;
}
return std::make_optional(val);
#else // !_WIN32
const char* val = getenv(var.data());
if (val == nullptr) {
return std::nullopt;
}
return std::make_optional(std::string(val));
#endif
}
#ifdef _WIN32
constexpr char kHostNameEnvVar[] = "COMPUTERNAME";
constexpr char kUserNameEnvVar[] = "USERNAME";
#else
constexpr char kHostNameEnvVar[] = "HOSTNAME";
constexpr char kUserNameEnvVar[] = "LOGNAME";
#endif
std::string GetHostNameUTF8() {
const auto hostName = GetEnvironmentVariable(kHostNameEnvVar);
if (hostName && !hostName->empty()) {
return *hostName;
}
#ifdef _WIN32
wchar_t wbuf[MAX_COMPUTERNAME_LENGTH + 1];
DWORD size = sizeof(wbuf);
if (!GetComputerNameW(wbuf, &size) || size == 0) {
return "";
}
std::string name;
if (!android::base::WideToUTF8(wbuf, &name)) {
return "";
}
return name;
#else // !_WIN32
char buf[256];
return (gethostname(buf, sizeof(buf)) == -1) ? "" : buf;
#endif // _WIN32
}
std::string GetLoginNameUTF8() {
const auto userName = GetEnvironmentVariable(kUserNameEnvVar);
if (userName && !userName->empty()) {
return *userName;
}
#ifdef _WIN32
wchar_t wbuf[UNLEN + 1];
DWORD size = sizeof(wbuf);
if (!GetUserNameW(wbuf, &size) || size == 0) {
return "";
}
std::string login;
if (!android::base::WideToUTF8(wbuf, &login)) {
return "";
}
return login;
#else // !_WIN32
const char* login = getlogin();
return login ? login : "";
#endif // _WIN32
}
} // namespace sysdeps
} // namespace adb
|
