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package main
import (
"crypto/x509"
"encoding/pem"
"flag"
"fmt"
"io/ioutil"
"os"
)
func main() {
flag.Parse()
for _, fileName := range flag.Args() {
data, err := ioutil.ReadFile(fileName)
if err != nil {
fmt.Fprintf(os.Stderr, "[!] %s: %v\n", fileName, err)
continue
}
fmt.Printf("[+] %s:\n", fileName)
rest := data[:]
for {
var p *pem.Block
p, rest = pem.Decode(rest)
if p == nil {
break
}
cert, err := x509.ParseCertificate(p.Bytes)
if err != nil {
fmt.Fprintf(os.Stderr, "[!] %s: %v\n", fileName, err)
break
}
fmt.Printf("\t%+v\n", cert.Subject.CommonName)
}
}
}
|
