github.com/sneal/packer@v0.5.2/builder/virtualbox/common/ssh.go (about)

     1  package common
     2  
     3  import (
     4  	gossh "code.google.com/p/go.crypto/ssh"
     5  	"fmt"
     6  	"github.com/mitchellh/multistep"
     7  	"github.com/mitchellh/packer/communicator/ssh"
     8  	"io/ioutil"
     9  	"os"
    10  )
    11  
    12  func SSHAddress(state multistep.StateBag) (string, error) {
    13  	sshHostPort := state.Get("sshHostPort").(uint)
    14  	return fmt.Sprintf("127.0.0.1:%d", sshHostPort), nil
    15  }
    16  
    17  func SSHConfigFunc(config SSHConfig) func(multistep.StateBag) (*gossh.ClientConfig, error) {
    18  	return func(state multistep.StateBag) (*gossh.ClientConfig, error) {
    19  		auth := []gossh.ClientAuth{
    20  			gossh.ClientAuthPassword(ssh.Password(config.SSHPassword)),
    21  			gossh.ClientAuthKeyboardInteractive(
    22  				ssh.PasswordKeyboardInteractive(config.SSHPassword)),
    23  		}
    24  
    25  		if config.SSHKeyPath != "" {
    26  			keyring, err := sshKeyToKeyring(config.SSHKeyPath)
    27  			if err != nil {
    28  				return nil, err
    29  			}
    30  
    31  			auth = append(auth, gossh.ClientAuthKeyring(keyring))
    32  		}
    33  
    34  		return &gossh.ClientConfig{
    35  			User: config.SSHUser,
    36  			Auth: auth,
    37  		}, nil
    38  	}
    39  }
    40  
    41  func sshKeyToKeyring(path string) (gossh.ClientKeyring, error) {
    42  	f, err := os.Open(path)
    43  	if err != nil {
    44  		return nil, err
    45  	}
    46  	defer f.Close()
    47  
    48  	keyBytes, err := ioutil.ReadAll(f)
    49  	if err != nil {
    50  		return nil, err
    51  	}
    52  
    53  	keyring := new(ssh.SimpleKeychain)
    54  	if err := keyring.AddPEMKey(string(keyBytes)); err != nil {
    55  		return nil, err
    56  	}
    57  
    58  	return keyring, nil
    59  }