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package main
import (
"crypto/tls"
"crypto/x509"
"encoding/pem"
"fmt"
"os"
)
func getcert(socket string) (*x509.Certificate, error){
conn, err := tls.Dial("tcp", socket, &tls.Config{InsecureSkipVerify: true})
if err != nil {
return nil, err
}
defer conn.Close()
return conn.ConnectionState().PeerCertificates[0], nil
}
func main() {
for _, socket := range os.Args[1:] {
cert, err := getcert(socket)
if cert == nil {
fmt.Fprintf(os.Stderr, "Could not get certificate for socket %q: %q\n", socket, err)
os.Exit(1)
}
block := pem.Block{
Type: "CERTIFICATE",
Headers: map[string]string{"X-Socket": socket},
Bytes: cert.Raw,
}
pem.Encode(os.Stdout, &block)
}
}
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