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ssh_client.go
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/
ssh_client.go
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package gconn
import (
"net"
"github.com/pkg/errors"
"golang.org/x/crypto/ssh"
)
type sshClient struct {
client *ssh.Client
config *ssh.ClientConfig
}
// NewSSHClient will connect via SSH to the given address using the user
// specified.
func NewSSHClient(addr, user string, opts ...SSHOption) (Client, error) {
sCfg, err := newSSHCfg(addr, user, opts)
if err != nil {
return nil, err
}
sc := &sshClient{config: sCfg.cc}
sc.client, err = ssh.Dial("tcp", sCfg.Address(), sCfg.cc)
return sc, errors.Wrap(err, "failed to connect to SSH host")
}
func (sc *sshClient) NewSession(cmd string, args ...string) (Session, error) {
if sc.client == nil {
return nil, errors.Errorf("sc.client is nil, why???")
}
s, err := sc.client.NewSession()
if err != nil {
return nil, errors.Wrap(err, "failed to create new SSH session")
}
return &sshSession{Session: s, withSudo: sc.config.User != "root", cmd: cmd, args: args}, nil
}
func (sc *sshClient) Dial(n, addr string) (net.Conn, error) {
return sc.client.Dial(n, addr)
}
func (sc *sshClient) Close() error {
return sc.client.Close()
}