func ExampleClient_Listen() {
config := &ssh.ClientConfig{
User: "******",
Auth: []ssh.AuthMethod{
ssh.Password("password"),
},
}
// Dial your ssh server.
conn, err := ssh.Dial("tcp", "localhost:22", config)
if err != nil {
log.Fatalf("unable to connect: %s", err)
}
defer conn.Close()
// Request the remote side to open port 8080 on all interfaces.
l, err := conn.Listen("tcp", "0.0.0.0:8080")
if err != nil {
log.Fatalf("unable to register tcp forward: %v", err)
}
defer l.Close()
// Serve HTTP with your SSH server acting as a reverse proxy.
http.Serve(l, http.HandlerFunc(func(resp http.ResponseWriter, req *http.Request) {
fmt.Fprintf(resp, "Hello world!\n")
}))
}
func ExampleSession_RequestPty() {
// Create client config
config := &ssh.ClientConfig{
User: "******",
Auth: []ssh.AuthMethod{
ssh.Password("password"),
},
}
// Connect to ssh server
conn, err := ssh.Dial("tcp", "localhost:22", config)
if err != nil {
log.Fatalf("unable to connect: %s", err)
}
defer conn.Close()
// Create a session
session, err := conn.NewSession()
if err != nil {
log.Fatalf("unable to create session: %s", err)
}
defer session.Close()
// Set up terminal modes
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
}
// Request pseudo terminal
if err := session.RequestPty("xterm", 80, 40, modes); err != nil {
log.Fatalf("request for pseudo terminal failed: %s", err)
}
// Start remote shell
if err := session.Shell(); err != nil {
log.Fatalf("failed to start shell: %s", err)
}
}
func ExampleDial() {
// An SSH client is represented with a ClientConn. Currently only
// the "password" authentication method is supported.
//
// To authenticate with the remote server you must pass at least one
// implementation of AuthMethod via the Auth field in ClientConfig.
config := &ssh.ClientConfig{
User: "******",
Auth: []ssh.AuthMethod{
ssh.Password("yourpassword"),
},
}
client, err := ssh.Dial("tcp", "yourserver.com:22", config)
if err != nil {
panic("Failed to dial: " + err.Error())
}
// Each ClientConn can support multiple interactive sessions,
// represented by a Session.
session, err := client.NewSession()
if err != nil {
panic("Failed to create session: " + err.Error())
}
defer session.Close()
// Once a Session is created, you can execute a single command on
// the remote side using the Run method.
var b bytes.Buffer
session.Stdout = &b
if err := session.Run("/usr/bin/whoami"); err != nil {
panic("Failed to run: " + err.Error())
}
fmt.Println(b.String())
}
func main() {
var auths []ssh.AuthMethod
if aconn, err := net.Dial("unix", os.Getenv("SSH_AUTH_SOCK")); err == nil {
auths = append(auths, ssh.PublicKeysCallback(agent.NewClient(aconn).Signers))
}
if *PASS != "" {
auths = append(auths, ssh.Password(*PASS))
}
config := ssh.ClientConfig{
User: *USER,
Auth: auths,
}
addr := fmt.Sprintf("%s:%d", *HOST, *PORT)
conn, err := ssh.Dial("tcp", addr, &config)
if err != nil {
log.Fatalf("unable to connect to [%s]: %v", addr, err)
}
defer conn.Close()
c, err := sftp.NewClient(conn)
if err != nil {
log.Fatalf("unable to start sftp subsytem: %v", err)
}
defer c.Close()
r, err := c.Open("/dev/zero")
if err != nil {
log.Fatal(err)
}
defer r.Close()
w, err := os.OpenFile("/dev/null", syscall.O_WRONLY, 0600)
if err != nil {
log.Fatal(err)
}
defer w.Close()
const size int64 = 1e9
log.Printf("reading %v bytes", size)
t1 := time.Now()
n, err := io.Copy(w, io.LimitReader(r, size))
if err != nil {
log.Fatal(err)
}
if n != size {
log.Fatalf("copy: expected %v bytes, got %d", size, n)
}
log.Printf("read %v bytes in %s", size, time.Since(t1))
}
// This method creates executor based on ssh, it has concrete ssh reference
func NewRemoteExecutor(sshCfg SshConfig) (executor Executer, err error) {
clientconfig := &ssh.ClientConfig{
User: sshCfg.Username,
Auth: []ssh.AuthMethod{
ssh.Password(sshCfg.Password),
},
}
client, err := ssh.Dial("tcp", fmt.Sprintf("%s:%d", sshCfg.Host, sshCfg.Port), clientconfig)
if err != nil {
return
}
c := NewClientWrapper(client)
executor = &DefaultRemoteExecutor{
Client: c,
}
return
}
func (s *remoteOperations) GetRemoteFile() (rfile io.WriteCloser, err error) {
var (
sshconn *ssh.Client
sftpclient *sftp.Client
)
clientconfig := &ssh.ClientConfig{
User: s.sshCfg.Username,
Auth: []ssh.AuthMethod{
ssh.Password(s.sshCfg.Password),
},
}
if sshconn, err = ssh.Dial("tcp", fmt.Sprintf("%s:%d", s.sshCfg.Host, s.sshCfg.Port), clientconfig); err == nil {
if sftpclient, err = sftp.NewClient(sshconn); err == nil {
rfile, err = SafeCreateSSH(sftpclient, s.remotePath)
}
}
return
}
func main() {
var auths []ssh.AuthMethod
if aconn, err := net.Dial("unix", os.Getenv("SSH_AUTH_SOCK")); err == nil {
auths = append(auths, ssh.PublicKeysCallback(agent.NewClient(aconn).Signers))
}
if *PASS != "" {
auths = append(auths, ssh.Password(*PASS))
}
config := ssh.ClientConfig{
User: *USER,
Auth: auths,
}
addr := fmt.Sprintf("%s:%d", *HOST, *PORT)
conn, err := ssh.Dial("tcp", addr, &config)
if err != nil {
log.Fatalf("unable to connect to [%s]: %v", addr, err)
}
defer conn.Close()
client, err := sftp.NewClient(conn)
if err != nil {
log.Fatalf("unable to start sftp subsytem: %v", err)
}
defer client.Close()
switch cmd := flag.Args()[0]; cmd {
case "ls":
if len(flag.Args()) < 2 {
log.Fatalf("%s %s: remote path required", cmd, os.Args[0])
}
walker := client.Walk(flag.Args()[1])
for walker.Step() {
if err := walker.Err(); err != nil {
log.Println(err)
continue
}
fmt.Println(walker.Path())
}
case "fetch":
if len(flag.Args()) < 2 {
log.Fatalf("%s %s: remote path required", cmd, os.Args[0])
}
f, err := client.Open(flag.Args()[1])
if err != nil {
log.Fatal(err)
}
defer f.Close()
if _, err := io.Copy(os.Stdout, f); err != nil {
log.Fatal(err)
}
case "put":
if len(flag.Args()) < 2 {
log.Fatalf("%s %s: remote path required", cmd, os.Args[0])
}
f, err := client.Create(flag.Args()[1])
if err != nil {
log.Fatal(err)
}
defer f.Close()
if _, err := io.Copy(f, os.Stdin); err != nil {
log.Fatal(err)
}
case "stat":
if len(flag.Args()) < 2 {
log.Fatalf("%s %s: remote path required", cmd, os.Args[0])
}
f, err := client.Open(flag.Args()[1])
if err != nil {
log.Fatal(err)
}
defer f.Close()
fi, err := f.Stat()
if err != nil {
log.Fatalf("unable to stat file: %v", err)
}
fmt.Printf("%s %d %v\n", fi.Name(), fi.Size(), fi.Mode())
case "rm":
if len(flag.Args()) < 2 {
log.Fatalf("%s %s: remote path required", cmd, os.Args[0])
}
if err := client.Remove(flag.Args()[1]); err != nil {
log.Fatalf("unable to remove file: %v", err)
}
case "mv":
if len(flag.Args()) < 3 {
log.Fatalf("%s %s: old and new name required", cmd, os.Args[0])
}
if err := client.Rename(flag.Args()[1], flag.Args()[2]); err != nil {
log.Fatalf("unable to rename file: %v", err)
}
default:
log.Fatalf("unknown subcommand: %v", cmd)
}
}
