Merge melbahja#55 from gjung56/keyboard-interactive

Add KeyboardInteractive auth as fallback of password

auth.go

@@ -8,6 +8,7 @@ import (
  "io/ioutil"
  "net"
  "os"
+ "strings"
 
  "golang.org/x/crypto/ssh"
  "golang.org/x/crypto/ssh/agent"
@@ -23,6 +24,23 @@ func Password(pass string) Auth {
  }
 }
 
+// KeyboardInteractive returns password keyboard interactive auth method as fallback of password auth method.
+func KeyboardInteractive(pass string) Auth {
+ return Auth{
+ ssh.Password(pass),
+ ssh.KeyboardInteractive(func(user, instruction string, questions []string, echos []bool) (answers []string, err error) {
+ for _, q := range questions {
+ if strings.Contains(strings.ToLower(q), "password") {
+ answers = append(answers, pass)
+ } else {
+ answers = append(answers, "")
+ }
+ }
+ return answers, nil
+ }),
+ }
+}
+
 // Key returns auth method from private key with or without passphrase.
 func Key(prvFile string, passphrase string) (Auth, error) {