packer-cn/builder/cloudstack/ssh.go

83 lines
2.0 KiB
Go

package cloudstack
import (
"fmt"
"net"
"os"
packerssh "github.com/hashicorp/packer/communicator/ssh"
"github.com/mitchellh/multistep"
"golang.org/x/crypto/ssh"
"golang.org/x/crypto/ssh/agent"
)
func commHost(state multistep.StateBag) (string, error) {
ip, hasIP := state.Get("ipaddress").(string)
if !hasIP {
return "", fmt.Errorf("Failed to retrieve IP address")
}
return ip, nil
}
func commPort(state multistep.StateBag) (int, error) {
commPort, hasPort := state.Get("commPort").(int)
if !hasPort {
return 0, fmt.Errorf("Failed to retrieve communication port")
}
return commPort, nil
}
func sshConfig(useAgent bool, username, password string) func(state 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,
HostKeyCallback: ssh.InsecureIgnoreHostKey(),
Auth: []ssh.AuthMethod{
ssh.Password(password),
ssh.KeyboardInteractive(
packerssh.PasswordKeyboardInteractive(password)),
}}, nil
}
}
}