goutils/cmd/pem2bin/main.go

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680 B
Go
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package main
import (
"encoding/pem"
"flag"
"fmt"
"io/ioutil"
"os"
)
var ext = ".bin"
func stripPEM(path string) error {
data, err := ioutil.ReadFile(path)
if err != nil {
return err
}
p, rest := pem.Decode(data)
if len(rest) != 0 {
fmt.Fprintf(os.Stderr, "[WARNING] extra data in PEM file\n")
fmt.Fprintf(os.Stderr, " (only the first object will be decoded)\n")
}
return ioutil.WriteFile(path+ext, p.Bytes, 0644)
}
func main() {
flag.Parse()
for _, path := range flag.Args() {
err := stripPEM(path)
if err != nil {
fmt.Fprintf(os.Stderr, "processing %s failed: %v\n", path, err)
} else {
fmt.Println(path, "->", path+ext)
}
}
}