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|
//go:build windows
package main
import (
"fmt"
"os"
"strings"
"syscall"
"unsafe"
)
var (
shell32 = syscall.NewLazyDLL("shell32.dll")
shellExecuteW = shell32.NewProc("ShellExecuteW")
isUserAnAdminProc = shell32.NewProc("IsUserAnAdmin")
errCancelledByUser = uintptr(1223)
)
func isElevated() bool {
ret, _, _ := isUserAnAdminProc.Call()
return ret != 0
}
func relaunchElevated() error {
exePath, err := os.Executable()
if err != nil {
return err
}
verb, err := syscall.UTF16PtrFromString("runas")
if err != nil {
return err
}
file, err := syscall.UTF16PtrFromString(exePath)
if err != nil {
return err
}
args, err := syscall.UTF16PtrFromString(joinWindowsArgs(os.Args[1:]))
if err != nil {
return err
}
ret, _, callErr := shellExecuteW.Call(
0,
uintptr(unsafe.Pointer(verb)),
uintptr(unsafe.Pointer(file)),
uintptr(unsafe.Pointer(args)),
0,
1,
)
if ret <= 32 {
if ret == errCancelledByUser {
return fmt.Errorf("administrator privileges were not granted")
}
if callErr != syscall.Errno(0) {
return fmt.Errorf("ShellExecuteW failed: %w", callErr)
}
return fmt.Errorf("ShellExecuteW failed with code %d", ret)
}
return nil
}
func joinWindowsArgs(args []string) string {
if len(args) == 0 {
return ""
}
quoted := make([]string, 0, len(args))
for _, arg := range args {
escaped := strings.ReplaceAll(arg, `"`, `\"`)
quoted = append(quoted, `"`+escaped+`"`)
}
return strings.Join(quoted, " ")
}
|
