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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/system/sys_info.h"
#import <UIKit/UIKit.h>
#include <mach/mach.h>
#include <stddef.h>
#include <stdint.h>
#include <sys/sysctl.h>
#include <sys/types.h>
#include "base/apple/scoped_mach_port.h"
#include "base/check_op.h"
#include "base/no_destructor.h"
#include "base/notreached.h"
#include "base/numerics/safe_conversions.h"
#include "base/posix/sysctl.h"
#include "base/process/process_metrics.h"
#include "base/strings/string_util.h"
#include "base/strings/stringprintf.h"
#include "base/strings/sys_string_conversions.h"
#include "build/build_config.h"
namespace base {
#if BUILDFLAG(IS_IOS)
namespace {
// Accessor for storage of overridden HardwareModelName.
std::string& GetHardwareModelNameStorage() {
static base::NoDestructor<std::string> instance;
return *instance;
}
} // namespace
#endif
// static
std::string SysInfo::OperatingSystemName() {
static dispatch_once_t get_system_name_once;
static std::string* system_name;
dispatch_once(&get_system_name_once, ^{
@autoreleasepool {
system_name =
new std::string(SysNSStringToUTF8(UIDevice.currentDevice.systemName));
}
});
// Examples of returned value: 'iPhone OS' on iPad 5.1.1
// and iPhone 5.1.1.
return *system_name;
}
// static
std::string SysInfo::OperatingSystemVersion() {
static dispatch_once_t get_system_version_once;
static std::string* system_version;
dispatch_once(&get_system_version_once, ^{
@autoreleasepool {
system_version = new std::string(
SysNSStringToUTF8(UIDevice.currentDevice.systemVersion));
}
});
return *system_version;
}
// static
void SysInfo::OperatingSystemVersionNumbers(int32_t* major_version,
int32_t* minor_version,
int32_t* bugfix_version) {
NSOperatingSystemVersion version =
NSProcessInfo.processInfo.operatingSystemVersion;
*major_version = saturated_cast<int32_t>(version.majorVersion);
*minor_version = saturated_cast<int32_t>(version.minorVersion);
*bugfix_version = saturated_cast<int32_t>(version.patchVersion);
}
// static
std::string SysInfo::OperatingSystemArchitecture() {
#if defined(ARCH_CPU_X86)
return "x86";
#elif defined(ARCH_CPU_X86_64)
return "x86_64";
#elif defined(ARCH_CPU_ARMEL)
return "arm";
#elif defined(ARCH_CPU_ARM64)
return "arm64";
#else
#error Unsupported CPU architecture
#endif
}
// static
std::string SysInfo::GetIOSBuildNumber() {
std::optional<std::string> build_number =
StringSysctl({CTL_KERN, KERN_OSVERSION});
return build_number.value();
}
// static
void SysInfo::OverrideHardwareModelName(std::string name) {
// Normally, HardwareModelName() should not be called before overriding the
// value, but StartCrashController(), which eventually calls
// HardwareModelName(), is called before overriding the name.
CHECK(!name.empty());
GetHardwareModelNameStorage() = std::move(name);
}
// static
uint64_t SysInfo::AmountOfAvailablePhysicalMemoryImpl() {
SystemMemoryInfoKB info;
if (!GetSystemMemoryInfo(&info)) {
return 0;
}
// We should add inactive file-backed memory also but there is no such
// information from iOS unfortunately.
return checked_cast<uint64_t>(info.free + info.speculative) * 1024;
}
// static
std::string SysInfo::CPUModelName() {
return StringSysctlByName("machdep.cpu.brand_string").value_or(std::string{});
}
// static
std::string SysInfo::HardwareModelName() {
#if TARGET_OS_SIMULATOR
// On the simulator, "hw.machine" returns "i386" or "x86_64" which doesn't
// match the expected format, so supply a fake string here.
const char* model = getenv("SIMULATOR_MODEL_IDENTIFIER");
if (model == nullptr) {
switch (UIDevice.currentDevice.userInterfaceIdiom) {
case UIUserInterfaceIdiomPhone:
model = "iPhone";
break;
case UIUserInterfaceIdiomPad:
model = "iPad";
break;
default:
model = "Unknown";
break;
}
}
return base::StringPrintf("iOS Simulator (%s)", model);
#else
const std::string& override = GetHardwareModelNameStorage();
if (!override.empty()) {
return override;
}
// Note: This uses "hw.machine" instead of "hw.model" like the Mac code,
// because "hw.model" doesn't always return the right string on some devices.
return StringSysctl({CTL_HW, HW_MACHINE}).value_or(std::string{});
#endif
}
// static
SysInfo::HardwareInfo SysInfo::GetHardwareInfoSync() {
HardwareInfo info;
info.manufacturer = "Apple Inc.";
info.model = HardwareModelName();
DCHECK(IsStringUTF8(info.manufacturer));
DCHECK(IsStringUTF8(info.model));
return info;
}
} // namespace base
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