79 lines
2.1 KiB
Go
79 lines
2.1 KiB
Go
package acctest
|
|
|
|
import (
|
|
"bufio"
|
|
"bytes"
|
|
crand "crypto/rand"
|
|
"crypto/rsa"
|
|
"crypto/x509"
|
|
"encoding/pem"
|
|
"fmt"
|
|
"math/rand"
|
|
"strings"
|
|
"time"
|
|
|
|
"golang.org/x/crypto/ssh"
|
|
)
|
|
|
|
// Helpers for generating random tidbits for use in identifiers to prevent
|
|
// collisions in acceptance tests.
|
|
|
|
// RandInt generates a random integer
|
|
func RandInt() int {
|
|
reseed()
|
|
return rand.New(rand.NewSource(time.Now().UnixNano())).Int()
|
|
}
|
|
|
|
// RandString generates a random alphanumeric string of the length specified
|
|
func RandString(strlen int) string {
|
|
return RandStringFromCharSet(strlen, CharSetAlphaNum)
|
|
}
|
|
|
|
// RandStringFromCharSet generates a random string by selecting characters from
|
|
// the charset provided
|
|
func RandStringFromCharSet(strlen int, charSet string) string {
|
|
reseed()
|
|
result := make([]byte, strlen)
|
|
for i := 0; i < strlen; i++ {
|
|
result[i] = charSet[rand.Intn(len(charSet))]
|
|
}
|
|
return string(result)
|
|
}
|
|
|
|
// RandSSHKeyPair generates a public and private SSH key pair. The public key is
|
|
// returned in OpenSSH format, and the private key is PEM encoded.
|
|
func RandSSHKeyPair(comment string) (string, string, error) {
|
|
privateKey, err := rsa.GenerateKey(crand.Reader, 1024)
|
|
if err != nil {
|
|
return "", "", err
|
|
}
|
|
|
|
var privateKeyBuffer bytes.Buffer
|
|
privateKeyPEM := &pem.Block{Type: "RSA PRIVATE KEY", Bytes: x509.MarshalPKCS1PrivateKey(privateKey)}
|
|
if err := pem.Encode(bufio.NewWriter(&privateKeyBuffer), privateKeyPEM); err != nil {
|
|
return "", "", err
|
|
}
|
|
|
|
publicKey, err := ssh.NewPublicKey(&privateKey.PublicKey)
|
|
if err != nil {
|
|
return "", "", err
|
|
}
|
|
keyMaterial := strings.TrimSpace(string(ssh.MarshalAuthorizedKey(publicKey)))
|
|
return fmt.Sprintf("%s %s", keyMaterial, comment), privateKeyBuffer.String(), nil
|
|
}
|
|
|
|
// Seeds random with current timestamp
|
|
func reseed() {
|
|
rand.Seed(time.Now().UTC().UnixNano())
|
|
}
|
|
|
|
const (
|
|
// CharSetAlphaNum is the alphanumeric character set for use with
|
|
// RandStringFromCharSet
|
|
CharSetAlphaNum = "abcdefghijklmnopqrstuvwxyz012346789"
|
|
|
|
// CharSetAlpha is the alphabetical character set for use with
|
|
// RandStringFromCharSet
|
|
CharSetAlpha = "abcdefghijklmnopqrstuvwxyz"
|
|
)
|