62 lines
1.1 KiB
Go
62 lines
1.1 KiB
Go
package main
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import (
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"crypto/x509"
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"encoding/hex"
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"flag"
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"fmt"
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"strings"
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"git.wntrmute.dev/kyle/goutils/certlib"
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"git.wntrmute.dev/kyle/goutils/die"
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)
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const (
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displayInt = iota + 1
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displayLHex
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displayUHex
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)
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func parseDisplayMode(mode string) int {
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mode = strings.ToLower(mode)
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switch mode {
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case "int":
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return displayInt
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case "hex":
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return displayLHex
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case "uhex":
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return displayUHex
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default:
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die.With("invalid display mode ", mode)
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}
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return displayInt
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}
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func serialString(cert *x509.Certificate, mode int) string {
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switch mode {
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case displayInt:
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return cert.SerialNumber.String()
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case displayLHex:
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return hex.EncodeToString(cert.SerialNumber.Bytes())
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case displayUHex:
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return strings.ToUpper(hex.EncodeToString(cert.SerialNumber.Bytes()))
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default:
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return cert.SerialNumber.String()
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}
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}
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func main() {
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displayAs := flag.String("d", "int", "display mode (int, hex, uhex)")
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flag.Parse()
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displayMode := parseDisplayMode(*displayAs)
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for _, arg := range flag.Args() {
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cert, err := certlib.LoadCertificate(arg)
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die.If(err)
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fmt.Printf("%s: %x\n", arg, serialString(cert, displayMode))
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}
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}
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