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// Copyright (c) 2011 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 "chromeos/system/version_loader.h"
#include <vector>
#include "base/files/file_path.h"
#include "base/files/file_util.h"
#include "base/location.h"
#include "base/strings/string_split.h"
#include "base/strings/string_util.h"
#include "base/strings/stringprintf.h"
#include "base/sys_info.h"
#include "base/time/time.h"
namespace chromeos {
namespace version_loader {
namespace {
// Beginning of line we look for that gives full version number.
// Format: x.x.xx.x (Developer|Official build extra info) board info
const char kFullVersionKey[] = "CHROMEOS_RELEASE_DESCRIPTION";
// Same but for short version (x.x.xx.x).
const char kVersionKey[] = "CHROMEOS_RELEASE_VERSION";
// Beginning of line we look for that gives the firmware version.
const char kFirmwarePrefix[] = "version";
// File to look for firmware number in.
const char kPathFirmware[] = "/var/log/bios_info.txt";
} // namespace
std::string GetVersion(VersionFormat format) {
std::string version;
std::string key = (format == VERSION_FULL ?
kFullVersionKey : kVersionKey);
if (!base::SysInfo::GetLsbReleaseValue(key, &version)) {
LOG_IF(ERROR, base::SysInfo::IsRunningOnChromeOS())
<< "No LSB version key: " << key;
version = "0.0.0.0";
}
if (format == VERSION_SHORT_WITH_DATE) {
base::Time::Exploded ctime;
base::SysInfo::GetLsbReleaseTime().UTCExplode(&ctime);
version += base::StringPrintf("-%02u.%02u.%02u",
ctime.year % 100,
ctime.month,
ctime.day_of_month);
}
return version;
}
std::string GetFirmware() {
std::string firmware;
std::string contents;
const base::FilePath file_path(kPathFirmware);
if (base::ReadFileToString(file_path, &contents)) {
firmware = ParseFirmware(contents);
}
return firmware;
}
std::string ParseFirmware(const std::string& contents) {
// The file contains lines such as:
// vendor | ...
// version | ...
// release_date | ...
// We don't make any assumption that the spaces between "version" and "|" is
// fixed. So we just match kFirmwarePrefix at the start of the line and find
// the first character that is not "|" or space
base::StringPiece firmware_prefix(kFirmwarePrefix);
for (const std::string& line : base::SplitString(
contents, "\n", base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL)) {
if (base::StartsWith(line, firmware_prefix,
base::CompareCase::INSENSITIVE_ASCII)) {
std::string str = line.substr(firmware_prefix.size());
size_t found = str.find_first_not_of("| ");
if (found != std::string::npos)
return str.substr(found);
}
}
return std::string();
}
} // namespace version_loader
} // namespace chromeos
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