tlshandshake/utils.go

package tlshandshake

import (
	"encoding/hex"
	"fmt"
	"github.com/grantae/certinfo"
	th5 "github.com/henrydcase/th5"
)

var tf = map[bool]string{
	true:  "TRUE",
	false: "FALSE",
}

func toHex(b []byte) string {
	str := make([]byte, hex.EncodedLen(len(b)))
	hex.Encode(str, b[:])
	return string(str)
}

func printTlsState(con *th5.Conn) {
	state := con.ConnectionState()
	fmt.Println("| TLS-Session:")
	fmt.Println("-----------------------------------------------------------------")
	fmt.Printf("\tProtocol\t\t: %s\n", TlsVersionToName[state.Version])
	fmt.Printf("\tCipher\t\t\t: %s\n", CipherSuiteIdToName[state.CipherSuite])
	fmt.Printf("\tNegotiated Group\t: %s\n", NamedGroupsToName[uint16(state.Group)])
	fmt.Printf("\tConnection ID\t\t: %s\n", toHex(state.ConnectionID))
	fmt.Printf("\tSCTs\t\t\t: %s\n", state.SignedCertificateTimestamps)
	fmt.Printf("\tConnection resumed\t: %s\n", tf[state.DidResume])
	//fmt.Printf("\tNext protocol\t\t: %s\n", state.NegotiatedProtocol)
	fmt.Printf("\tEMS used\t\t: %s\n", tf[con.UsedEMS()])
	fmt.Printf("\tStapled OCSP response\t: %s\n", toHex(state.OCSPResponse))

	fmt.Println("\n| Connection:")
	fmt.Println("-----------------------------------------------------------------")
	fmt.Printf("\tLocal address\t\t: %s\n", con.LocalAddr())
	fmt.Printf("\tRemote address\t\t: %s\n", con.RemoteAddr())

	fmt.Println("\n| Server Certificates:")
	fmt.Println("-----------------------------------------------------------------")
	for i, cert := range state.PeerCertificates {
		fmt.Printf("Depth      : %d\n", i)
		fmt.Printf("Issuer     : %s\n", cert.Issuer)
		res, err := certinfo.CertificateText(cert)
		if err != nil {
			panic("Error parsing received server certificate")
		}
		fmt.Println(res)

	}

}