mirror of
https://github.com/rwinkhart/peercred-mini.git
synced 2026-08-27 20:36:30 -04:00
46 lines
1.1 KiB
Go
46 lines
1.1 KiB
Go
// Copyright (c) 2021-2025 AUTHORS All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package peercred
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import (
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"fmt"
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"net"
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"github.com/Microsoft/go-winio"
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"golang.org/x/sys/windows"
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)
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// Get returns the peer credentials for c.
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func Get(c net.Conn) *Creds {
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creds, _ := get(winio.GetPipeHandle(c))
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return creds
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}
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func get(h windows.Handle) (*Creds, error) {
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// get PID
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var clientPID uint32
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windows.GetNamedPipeClientProcessId(h, &clientPID)
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// get SID (UID)
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var access uint32 = windows.PROCESS_QUERY_INFORMATION
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hProcess, herr := windows.OpenProcess(access, false, clientPID)
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defer windows.CloseHandle(hProcess)
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var hToken windows.Token
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windows.OpenProcessToken(hProcess, windows.TOKEN_QUERY, &hToken)
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defer hToken.Close()
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tokenUser, terr := hToken.GetTokenUser()
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if terr != nil {
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return nil, fmt.Errorf("windows.OpenProcessToken: %w", terr)
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}
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if herr != nil {
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return nil, fmt.Errorf("windows.OpenProcess: %w", herr)
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}
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return &Creds{
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PID: int(clientPID),
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UID: tokenUser.User.Sid.String(),
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}, nil
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}
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