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
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
|
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/sys_info.h"
#include "base/basictypes.h"
#include "base/environment.h"
#include "base/files/file.h"
#include "base/files/file_path.h"
#include "base/files/file_util.h"
#include "base/lazy_instance.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_piece.h"
#include "base/strings/string_split.h"
#include "base/strings/string_tokenizer.h"
#include "base/strings/string_util.h"
#include "base/threading/thread_restrictions.h"
namespace base {
namespace {
const char* const kLinuxStandardBaseVersionKeys[] = {
"CHROMEOS_RELEASE_VERSION",
"GOOGLE_RELEASE",
"DISTRIB_RELEASE",
};
const char kChromeOsReleaseNameKey[] = "CHROMEOS_RELEASE_NAME";
const char* const kChromeOsReleaseNames[] = {
"Chrome OS",
"Chromium OS",
};
const char kLinuxStandardBaseReleaseFile[] = "/etc/lsb-release";
const char kLsbReleaseKey[] = "LSB_RELEASE";
const char kLsbReleaseTimeKey[] = "LSB_RELEASE_TIME"; // Seconds since epoch
const char kLsbReleaseSourceKey[] = "lsb-release";
const char kLsbReleaseSourceEnv[] = "env";
const char kLsbReleaseSourceFile[] = "file";
class ChromeOSVersionInfo {
public:
ChromeOSVersionInfo() {
Parse();
}
void Parse() {
lsb_release_map_.clear();
major_version_ = 0;
minor_version_ = 0;
bugfix_version_ = 0;
is_running_on_chromeos_ = false;
std::string lsb_release, lsb_release_time_str;
scoped_ptr<Environment> env(Environment::Create());
bool parsed_from_env =
env->GetVar(kLsbReleaseKey, &lsb_release) &&
env->GetVar(kLsbReleaseTimeKey, &lsb_release_time_str);
if (parsed_from_env) {
double us = 0;
if (StringToDouble(lsb_release_time_str, &us))
lsb_release_time_ = Time::FromDoubleT(us);
} else {
// If the LSB_RELEASE and LSB_RELEASE_TIME environment variables are not
// set, fall back to a blocking read of the lsb_release file. This should
// only happen in non Chrome OS environments.
ThreadRestrictions::ScopedAllowIO allow_io;
FilePath path(kLinuxStandardBaseReleaseFile);
ReadFileToString(path, &lsb_release);
File::Info fileinfo;
if (GetFileInfo(path, &fileinfo))
lsb_release_time_ = fileinfo.creation_time;
}
ParseLsbRelease(lsb_release);
// For debugging:
lsb_release_map_[kLsbReleaseSourceKey] =
parsed_from_env ? kLsbReleaseSourceEnv : kLsbReleaseSourceFile;
}
bool GetLsbReleaseValue(const std::string& key, std::string* value) {
SysInfo::LsbReleaseMap::const_iterator iter = lsb_release_map_.find(key);
if (iter == lsb_release_map_.end())
return false;
*value = iter->second;
return true;
}
void GetVersionNumbers(int32* major_version,
int32* minor_version,
int32* bugfix_version) {
*major_version = major_version_;
*minor_version = minor_version_;
*bugfix_version = bugfix_version_;
}
const Time& lsb_release_time() const { return lsb_release_time_; }
const SysInfo::LsbReleaseMap& lsb_release_map() const {
return lsb_release_map_;
}
bool is_running_on_chromeos() const { return is_running_on_chromeos_; }
private:
void ParseLsbRelease(const std::string& lsb_release) {
// Parse and cache lsb_release key pairs. There should only be a handful
// of entries so the overhead for this will be small, and it can be
// useful for debugging.
base::StringPairs pairs;
SplitStringIntoKeyValuePairs(lsb_release, '=', '\n', &pairs);
for (size_t i = 0; i < pairs.size(); ++i) {
std::string key, value;
TrimWhitespaceASCII(pairs[i].first, TRIM_ALL, &key);
TrimWhitespaceASCII(pairs[i].second, TRIM_ALL, &value);
if (key.empty())
continue;
lsb_release_map_[key] = value;
}
// Parse the version from the first matching recognized version key.
std::string version;
for (size_t i = 0; i < arraysize(kLinuxStandardBaseVersionKeys); ++i) {
std::string key = kLinuxStandardBaseVersionKeys[i];
if (GetLsbReleaseValue(key, &version) && !version.empty())
break;
}
StringTokenizer tokenizer(version, ".");
if (tokenizer.GetNext()) {
StringToInt(StringPiece(tokenizer.token_begin(), tokenizer.token_end()),
&major_version_);
}
if (tokenizer.GetNext()) {
StringToInt(StringPiece(tokenizer.token_begin(), tokenizer.token_end()),
&minor_version_);
}
if (tokenizer.GetNext()) {
StringToInt(StringPiece(tokenizer.token_begin(), tokenizer.token_end()),
&bugfix_version_);
}
// Check release name for Chrome OS.
std::string release_name;
if (GetLsbReleaseValue(kChromeOsReleaseNameKey, &release_name)) {
for (size_t i = 0; i < arraysize(kChromeOsReleaseNames); ++i) {
if (release_name == kChromeOsReleaseNames[i]) {
is_running_on_chromeos_ = true;
break;
}
}
}
}
Time lsb_release_time_;
SysInfo::LsbReleaseMap lsb_release_map_;
int32 major_version_;
int32 minor_version_;
int32 bugfix_version_;
bool is_running_on_chromeos_;
};
static LazyInstance<ChromeOSVersionInfo>
g_chrome_os_version_info = LAZY_INSTANCE_INITIALIZER;
ChromeOSVersionInfo& GetChromeOSVersionInfo() {
return g_chrome_os_version_info.Get();
}
} // namespace
// static
void SysInfo::OperatingSystemVersionNumbers(int32* major_version,
int32* minor_version,
int32* bugfix_version) {
return GetChromeOSVersionInfo().GetVersionNumbers(
major_version, minor_version, bugfix_version);
}
// static
const SysInfo::LsbReleaseMap& SysInfo::GetLsbReleaseMap() {
return GetChromeOSVersionInfo().lsb_release_map();
}
// static
bool SysInfo::GetLsbReleaseValue(const std::string& key, std::string* value) {
return GetChromeOSVersionInfo().GetLsbReleaseValue(key, value);
}
// static
std::string SysInfo::GetLsbReleaseBoard() {
const char kMachineInfoBoard[] = "CHROMEOS_RELEASE_BOARD";
std::string board;
if (!GetLsbReleaseValue(kMachineInfoBoard, &board))
board = "unknown";
return board;
}
// static
Time SysInfo::GetLsbReleaseTime() {
return GetChromeOSVersionInfo().lsb_release_time();
}
// static
bool SysInfo::IsRunningOnChromeOS() {
return GetChromeOSVersionInfo().is_running_on_chromeos();
}
// static
void SysInfo::SetChromeOSVersionInfoForTest(const std::string& lsb_release,
const Time& lsb_release_time) {
scoped_ptr<Environment> env(Environment::Create());
env->SetVar(kLsbReleaseKey, lsb_release);
env->SetVar(kLsbReleaseTimeKey,
DoubleToString(lsb_release_time.ToDoubleT()));
g_chrome_os_version_info.Get().Parse();
}
} // namespace base
|
