forked from kubicorn/kubicorn
/
scp.go
90 lines (80 loc) · 2.31 KB
/
scp.go
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// Copyright © 2017 The Kubicorn Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package scp
import (
"fmt"
"io/ioutil"
"time"
"github.com/kris-nova/kubicorn/cutil/agent"
"github.com/kris-nova/kubicorn/cutil/logger"
"github.com/pkg/sftp"
"golang.org/x/crypto/ssh"
)
type SecureCopier struct {
RemoteUser string
RemoteAddress string
RemotePort string
PrivateKeyPath string
SSHAgent *agent.Keyring
}
func NewSecureCopier(remoteUser, remoteAddress, remotePort, privateKeyPath string, sshAgent *agent.Keyring) *SecureCopier {
return &SecureCopier{
RemoteUser: remoteUser,
RemoteAddress: remoteAddress,
RemotePort: remotePort,
PrivateKeyPath: privateKeyPath,
SSHAgent: sshAgent,
}
}
func (s *SecureCopier) ReadBytes(remotePath string) ([]byte, error) {
sshConfig := &ssh.ClientConfig{
User: s.RemoteUser,
HostKeyCallback: ssh.InsecureIgnoreHostKey(),
Timeout: time.Duration(3 * time.Second),
}
// Check for key
if err := s.SSHAgent.CheckKey(s.PrivateKeyPath + ".pub"); err != nil {
if keyring, err := s.SSHAgent.AddKey(s.PrivateKeyPath + ".pub"); err != nil {
return nil, err
} else {
s.SSHAgent = keyring
}
}
sshConfig.Auth = append(sshConfig.Auth, s.SSHAgent.GetAgent())
sshConfig.SetDefaults()
conn, err := ssh.Dial("tcp", fmt.Sprintf("%s:%s", s.RemoteAddress, s.RemotePort), sshConfig)
if err != nil {
return nil, err
}
defer conn.Close()
c, err := sftp.NewClient(conn)
if err != nil {
return nil, err
}
defer c.Close()
r, err := c.Open(remotePath)
if err != nil {
return nil, err
}
defer r.Close()
bytes, err := ioutil.ReadAll(r)
if err != nil {
return nil, err
}
return bytes, nil
}
func (s *SecureCopier) Write(localPath, remotePath string) error {
logger.Critical("Write not yet implemented!")
return nil
}