44 lines
1.2 KiB
Go
44 lines
1.2 KiB
Go
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package installer
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import (
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"fmt"
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"os"
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"golang.org/x/sys/windows"
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)
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func isPrivileged() bool {
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var sid *windows.SID
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// Although this looks scary, it is directly copied from the
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// official windows documentation. The Go API for this is a
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// direct wrap around the official C++ API.
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// See https://docs.microsoft.com/en-us/windows/desktop/api/securitybaseapi/nf-securitybaseapi-checktokenmembership
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err := windows.AllocateAndInitializeSid(
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&windows.SECURITY_NT_AUTHORITY,
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2,
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windows.SECURITY_BUILTIN_DOMAIN_RID,
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windows.DOMAIN_ALIAS_RID_ADMINS,
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0, 0, 0, 0, 0, 0,
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&sid)
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if err != nil {
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// we don't believe this _can_ return an error with the given inputs
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// and if it does, the important info is still the false
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fmt.Fprintf(os.Stderr, "warning: Unexpected Windows UserID Error: %s\n", err)
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return false
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}
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// This appears to cast a null pointer so I'm not sure why this
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// works, but this guy says it does and it Works for Me™:
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// https://github.com/golang/go/issues/28804#issuecomment-438838144
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token := windows.Token(0)
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isAdmin, err := token.IsMember(sid)
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if err != nil {
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fmt.Fprintf(os.Stderr, "warning: Unexpected Windows Permission ID Error: %s\n", err)
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return false
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}
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return isAdmin || token.IsElevated()
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}
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