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- //go:build linux
- // +build linux
-
- package utils
-
- import (
- "fmt"
- "net"
- "syscall"
- )
-
- // Output a description of a connection that can identify it to other systems
- // administration tools.
- func DescribeConn(c net.Conn) (description string) {
- description = "<error>"
- switch conn := c.(type) {
- case *net.UnixConn:
- f, err := conn.File()
- if err != nil {
- return
- }
- defer f.Close()
- ucred, err := syscall.GetsockoptUcred(int(f.Fd()), syscall.SOL_SOCKET, syscall.SO_PEERCRED)
- if err != nil {
- return
- }
- return fmt.Sprintf("%s <-> %s [pid=%d, uid=%d]", conn.LocalAddr().String(), conn.RemoteAddr().String(), ucred.Pid, ucred.Uid)
- default:
- // *net.TCPConn or *tls.Conn
- return fmt.Sprintf("%s <-> %s", conn.LocalAddr().String(), conn.RemoteAddr().String())
- }
- }
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