Created
January 8, 2018 02:13
-
-
Save boyzhujian/73b5ecd37efd6f8dd38f56e7588f1b58 to your computer and use it in GitHub Desktop.
golang run ssh command
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
//https://stackoverflow.com/questions/44471749/golang-enter-ssh-sudo-password-on-prompt-or-exit | |
package main | |
import ( | |
"bufio" | |
"fmt" | |
"io" | |
"log" | |
"net" | |
"strings" | |
"golang.org/x/crypto/ssh" | |
) | |
type Connection struct { | |
*ssh.Client | |
password string | |
} | |
func Connect(addr, user, password string) (*Connection, error) { | |
sshConfig := &ssh.ClientConfig{ | |
User: user, | |
Auth: []ssh.AuthMethod{ | |
ssh.Password(password), | |
}, | |
HostKeyCallback: ssh.HostKeyCallback(func(hostname string, remote net.Addr, key ssh.PublicKey) error { return nil }), | |
} | |
conn, err := ssh.Dial("tcp", addr, sshConfig) | |
if err != nil { | |
return nil, err | |
} | |
return &Connection{conn, password}, nil | |
} | |
func (conn *Connection) SendCommands(cmds ...string) ([]byte, error) { | |
session, err := conn.NewSession() | |
if err != nil { | |
log.Fatal(err) | |
} | |
defer session.Close() | |
modes := ssh.TerminalModes{ | |
ssh.ECHO: 0, // disable echoing | |
ssh.TTY_OP_ISPEED: 14400, // input speed = 14.4kbaud | |
ssh.TTY_OP_OSPEED: 14400, // output speed = 14.4kbaud | |
} | |
err = session.RequestPty("xterm", 80, 40, modes) | |
if err != nil { | |
return []byte{}, err | |
} | |
in, err := session.StdinPipe() | |
if err != nil { | |
log.Fatal(err) | |
} | |
out, err := session.StdoutPipe() | |
if err != nil { | |
log.Fatal(err) | |
} | |
var output []byte | |
go func(in io.WriteCloser, out io.Reader, output *[]byte) { | |
var ( | |
line string | |
r = bufio.NewReader(out) | |
) | |
for { | |
b, err := r.ReadByte() | |
if err != nil { | |
break | |
} | |
*output = append(*output, b) | |
if b == byte('\n') { | |
line = "" | |
continue | |
} | |
line += string(b) | |
if strings.HasPrefix(line, "[sudo] password for ") && strings.HasSuffix(line, ": ") { | |
_, err = in.Write([]byte(conn.password + "\n")) | |
if err != nil { | |
break | |
} | |
} | |
} | |
}(in, out, &output) | |
cmd := strings.Join(cmds, "; ") | |
_, err = session.Output(cmd) | |
if err != nil { | |
return []byte{}, err | |
} | |
return output, nil | |
} | |
func main() { | |
conn, err := Connect("10.252.10.38:22", "username", "password") | |
if err != nil { | |
log.Fatal(err) | |
} | |
output, err := conn.SendCommands("cat /export/home/jiazhu3/main.go") | |
if err != nil { | |
log.Fatal(err) | |
} | |
fmt.Println(string(output)) | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment