forked from hashicorp/packer
/
ssh_helper.go
83 lines (72 loc) · 2.1 KB
/
ssh_helper.go
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package ecs
import (
"fmt"
"net"
"os"
"time"
packerssh "github.com/hashicorp/packer/communicator/ssh"
"github.com/mitchellh/multistep"
"golang.org/x/crypto/ssh"
"golang.org/x/crypto/ssh/agent"
)
var (
// modified in tests
sshHostSleepDuration = time.Second
)
type alicloudSSHHelper interface {
}
// SSHHost returns a function that can be given to the SSH communicator
func SSHHost(e alicloudSSHHelper, private bool) func(multistep.StateBag) (string, error) {
return func(state multistep.StateBag) (string, error) {
ipAddress := state.Get("ipaddress").(string)
return ipAddress, nil
}
}
// SSHConfig returns a function that can be used for the SSH communicator
// config for connecting to the instance created over SSH using the private key
// or password.
func SSHConfig(useAgent bool, username, password string) func(multistep.StateBag) (*ssh.ClientConfig, error) {
return func(state multistep.StateBag) (*ssh.ClientConfig, error) {
if useAgent {
authSock := os.Getenv("SSH_AUTH_SOCK")
if authSock == "" {
return nil, fmt.Errorf("SSH_AUTH_SOCK is not set")
}
sshAgent, err := net.Dial("unix", authSock)
if err != nil {
return nil, fmt.Errorf("Cannot connect to SSH Agent socket %q: %s", authSock, err)
}
return &ssh.ClientConfig{
User: username,
Auth: []ssh.AuthMethod{
ssh.PublicKeysCallback(agent.NewClient(sshAgent).Signers),
},
HostKeyCallback: ssh.InsecureIgnoreHostKey(),
}, nil
}
privateKey, hasKey := state.GetOk("privateKey")
if hasKey {
signer, err := ssh.ParsePrivateKey([]byte(privateKey.(string)))
if err != nil {
return nil, fmt.Errorf("Error setting up SSH config: %s", err)
}
return &ssh.ClientConfig{
User: username,
Auth: []ssh.AuthMethod{
ssh.PublicKeys(signer),
},
HostKeyCallback: ssh.InsecureIgnoreHostKey(),
}, nil
} else {
return &ssh.ClientConfig{
User: username,
Auth: []ssh.AuthMethod{
ssh.Password(password),
ssh.KeyboardInteractive(
packerssh.PasswordKeyboardInteractive(password)),
},
HostKeyCallback: ssh.InsecureIgnoreHostKey(),
}, nil
}
}
}