cmd/certdump: use certlib.Fetcher.

cmd/certdump/util.go

@@ -1,10 +1,8 @@
 package main
 
 import (
-	"crypto/tls"
 	"crypto/x509"
 	"fmt"
-	"net"
 	"strings"
 
 	"github.com/kr/text"
@@ -142,48 +140,3 @@ func dumpHex(in []byte) string {
 
 	return strings.Trim(s, ":")
 }
-
-// permissiveConfig returns a maximally-accepting TLS configuration;
-// the purpose is to look at the cert, not verify the security properties
-// of the connection.
-func permissiveConfig() *tls.Config {
-	return &tls.Config{
-		InsecureSkipVerify: true,
-	} // #nosec G402
-}
-
-// verifyConfig returns a config that will verify the connection.
-func verifyConfig(hostname string) *tls.Config {
-	return &tls.Config{
-		ServerName: hostname,
-	} // #nosec G402
-}
-
-type connInfo struct {
-	// The original URI provided.
-	URI string
-
-	// The hostname of the server.
-	Host string
-
-	// The port to connect on.
-	Port string
-
-	// The address to connect to.
-	Addr string
-}
-
-func getConnInfo(uri string) *connInfo {
-	ci := &connInfo{URI: uri}
-	ci.Host = uri[len("https://"):]
-
-	host, port, err := net.SplitHostPort(ci.Host)
-	if err != nil {
-		ci.Port = "443"
-	} else {
-		ci.Host = host
-		ci.Port = port
-	}
-	ci.Addr = net.JoinHostPort(ci.Host, ci.Port)
-	return ci
-}