/
storage.go
118 lines (94 loc) · 2.47 KB
/
storage.go
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package ssh
import (
"bytes"
"fmt"
"io/ioutil"
"strings"
"golang.org/x/crypto/ssh"
)
type ScpStorage struct {
host string
port string
client *ssh.Client
PrivateKey string
Password string
User string
Endpoint string
}
func (ss *ScpStorage) Connect() error {
var err error
publicKeyAuth, err := ss.getPublicKeyAuthFrom(ss.PrivateKey)
if err != nil {
return fmt.Errorf("unable to get public key: %s", err.Error())
}
clientConfig := &ssh.ClientConfig{
User: ss.User,
Auth: []ssh.AuthMethod{
ssh.Password(ss.Password),
publicKeyAuth,
},
}
ss.client, err = ssh.Dial("tcp", ss.Endpoint, clientConfig)
if err != nil {
return fmt.Errorf("Failed to dial: %s", err.Error())
}
return nil
}
func (ss *ScpStorage) Push(localPath, remotePath string) error {
session, err := ss.client.NewSession()
if err != nil {
return fmt.Errorf("Failed to create session: %s", err.Error())
}
defer session.Close()
go func() {
w, _ := session.StdinPipe()
defer w.Close()
content, _ := ioutil.ReadFile(localPath)
fmt.Fprintln(w, "C0755", len(content), remotePath)
fmt.Fprint(w, string(content))
fmt.Fprint(w, "\x00")
}()
if err := session.Run("/usr/bin/scp -qrt ./"); err != nil {
return fmt.Errorf("Failed to run: %s", err.Error())
}
return nil
}
func (ss *ScpStorage) Pull(remotePath, localPath string) error {
session, err := ss.client.NewSession()
if err != nil {
return fmt.Errorf("Failed to create session: %s", err.Error())
}
defer session.Close()
var remoteFileBuffer bytes.Buffer
session.Stdout = &remoteFileBuffer
if err := session.Run(fmt.Sprintf("cat %s", remotePath)); err != nil {
return fmt.Errorf("Failed to run: %s", err.Error())
}
err = ioutil.WriteFile(localPath, remoteFileBuffer.Bytes(), 0744)
if err != nil {
return err
}
return nil
}
func (ss *ScpStorage) getPublicKeyAuthFrom(path string) (ssh.AuthMethod, error) {
key, err := ioutil.ReadFile(path)
if err != nil {
return nil, fmt.Errorf("unable to read private key: %v", err)
}
// Create the Signer for this private key.
signer, err := ssh.ParsePrivateKey(key)
if err != nil {
return nil, fmt.Errorf("unable to parse private key: %v", err)
}
return ssh.PublicKeys(signer), nil
}
func NewScpStorage(host, port, user, password string, privateKey string) *ScpStorage {
return &ScpStorage{
PrivateKey: privateKey,
Password: password,
User: user,
Endpoint: strings.Join([]string{host, port}, ":"),
host: host,
port: port,
}
}