Exemple #1
0
func pickSSHKey(candidateKeys map[string]string, w io.Writer) (ssh.PublicKey, error) {
	i := 0
	keyLst := make([]ssh.PublicKey, len(candidateKeys))
	for key, comment := range candidateKeys {
		pubKey, _, ok := ssh.ParsePublicKey([]byte(key))
		if !ok {
			continue
		}
		keyLst[i] = pubKey

		k := strings.TrimSpace(string(ssh.MarshalAuthorizedKey(pubKey)))
		l := fmt.Sprintf("[ %d ] %s...%s %s\n", i+1, k[0:24], k[len(k)-24:], comment)
		w.Write([]byte(l))
		i += 1
	}

	if i == 0 {
		return nil, errors.New("No ssh keys found.")
	}

	choice, err := pick("key", i)
	if err != nil {
		return nil, err
	}

	return keyLst[choice], nil
}
Exemple #2
0
// Find SSH keys on the local file system
func getSSHKeys(existingKeyFingerprints map[string]bool) map[string]string {
	candidateKeys := make(map[string]string)

	// get key from id_rsa.pub
	rsaKey, rsaComment, rsaErr := sshReadPubKey(idRsaPubPath)
	if rsaErr == nil {
		candidateKeys[string(ssh.MarshalPublicKey(rsaKey))] = rsaComment
	}

	// get key from id_dsa.pub
	dsaKey, dsaComment, dsaErr := sshReadPubKey(idDsaPubPath)
	if dsaErr == nil {
		candidateKeys[string(ssh.MarshalPublicKey(dsaKey))] = dsaComment
	}

	// get keys from ssh-add
	out, err := exec.Command("ssh-add", "-L").Output()
	sshAddKeys := strings.TrimSpace(string(out))
	if err == nil && sshAddKeys != "" {
		for _, k := range strings.Split(sshAddKeys, "\n") {
			key, comment, _, _, ok := ssh.ParseAuthorizedKey([]byte(k))
			if ok {
				candidateKeys[string(ssh.MarshalPublicKey(key))] = comment
			}
		}
	}

	for k, _ := range candidateKeys {
		pubKey, _, _ := ssh.ParsePublicKey([]byte(k))
		fp := fingerprint(pubKey)
		if _, ok := existingKeyFingerprints[fp]; ok {
			delete(candidateKeys, k)
		}
	}

	return candidateKeys
}