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/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2019 WireGuard LLC. All Rights Reserved.
*/
package version
import (
"os"
"runtime"
"unsafe"
"golang.org/x/sys/windows"
)
//sys GetFileVersionInfoSize(filename *uint16, zero *uint32) (size uint32, err error) = version.GetFileVersionInfoSizeW
//sys GetFileVersionInfo(filename *uint16, zero uint32, size uint32, block *byte) (err error) = version.GetFileVersionInfoW
//sys VerQueryValue(block *byte, section *uint16, value **byte, size *uint32) (err error) = version.VerQueryValueW
var cachedVersion, cachedName string
func RunningNameVersion() (name, version string) {
if len(cachedVersion) != 0 || len(cachedName) != 0 {
return cachedName, cachedVersion
}
self, err := os.Executable()
if err != nil {
panic(err)
}
self16, err := windows.UTF16PtrFromString(self)
if err != nil {
panic(err)
}
var zero uint32
size, err := GetFileVersionInfoSize(self16, &zero)
if err != nil {
panic(err)
}
buffer := make([]byte, size)
err = GetFileVersionInfo(self16, zero, size, &buffer[0])
if err != nil {
panic(err)
}
var val16 *uint16
err = VerQueryValue(&buffer[0], windows.StringToUTF16Ptr(`\StringFileInfo\040904b0\ProductName`), (**byte)(unsafe.Pointer(&val16)), &size)
if err != nil {
panic(err)
}
name = windows.UTF16ToString((*[(1 << 30) - 1]uint16)(unsafe.Pointer(val16))[:size])
err = VerQueryValue(&buffer[0], windows.StringToUTF16Ptr(`\StringFileInfo\040904b0\ProductVersion`), (**byte)(unsafe.Pointer(&val16)), &size)
if err != nil {
panic(err)
}
version = windows.UTF16ToString((*[(1 << 30) - 1]uint16)(unsafe.Pointer(val16))[:size])
runtime.KeepAlive(buffer)
cachedName = name
cachedVersion = version
return
}
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