40 lines
595 B
Go
40 lines
595 B
Go
package main
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import (
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"crypto/tls"
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"encoding/pem"
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"flag"
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"fmt"
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"regexp"
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"github.com/kisom/goutils/die"
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)
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var hasPort = regexp.MustCompile(`:\d+$`)
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func main() {
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flag.Parse()
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for _, server := range flag.Args() {
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if !hasPort.MatchString(server) {
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server += ":443"
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}
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var chain string
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conn, err := tls.Dial("tcp", server, nil)
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die.If(err)
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details := conn.ConnectionState()
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for _, cert := range details.PeerCertificates {
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p := pem.Block{
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Type: "CERTIFICATE",
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Bytes: cert.Raw,
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}
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chain += string(pem.EncodeToMemory(&p))
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}
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fmt.Println(chain)
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}
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}
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