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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2020 Jason A. Donenfeld. All Rights Reserved.
*/
#include "systeminfo.h"
#include "version.h"
#include <windows.h>
#include <stdbool.h>
#include <stdio.h>
extern NTAPI __declspec(dllimport) void RtlGetNtVersionNumbers(DWORD *MajorVersion, DWORD *MinorVersion, DWORD *BuildNumber);
const char *architecture(void)
{
static const char *cached_arch;
HMODULE kernel32;
BOOL(WINAPI *IsWow64Process2)(HANDLE hProcess, USHORT *pProcessMachine, USHORT *pNativeMachine);
USHORT process_machine, native_machine;
BOOL is_wow64_process;
if (cached_arch)
return cached_arch;
kernel32 = GetModuleHandleA("kernel32.dll");
if (!kernel32)
return NULL;
IsWow64Process2 = (void *)GetProcAddress(kernel32, "IsWow64Process2");
if (IsWow64Process2) {
if (!IsWow64Process2(GetCurrentProcess(), &process_machine, &native_machine))
return NULL;
switch (native_machine) {
case IMAGE_FILE_MACHINE_I386:
return cached_arch = "x86";
case IMAGE_FILE_MACHINE_AMD64:
return cached_arch = "amd64";
case IMAGE_FILE_MACHINE_ARMNT:
return cached_arch = "arm";
case IMAGE_FILE_MACHINE_ARM64:
return cached_arch = "arm64";
}
} else {
if (!IsWow64Process(GetCurrentProcess(), &is_wow64_process))
return NULL;
return cached_arch = is_wow64_process ? "amd64" : "x86";
}
return NULL;
}
const char *useragent(void)
{
static char useragent[0x200];
DWORD maj, min, build;
if (useragent[0])
return useragent;
RtlGetNtVersionNumbers(&maj, &min, &build);
_snprintf_s(useragent, sizeof(useragent), _TRUNCATE, "WireGuard-Fetcher/" VERSION_STR " (Windows %lu.%lu.%lu; %s)", maj, min, build & 0xffff, architecture());
return useragent;
}
bool is_win7(void)
{
DWORD maj, min, build;
RtlGetNtVersionNumbers(&maj, &min, &build);
return maj == 6 && min == 1;
}
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