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 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 that is responsible of setting the session and communicating
func sshDispatch(cmd string, user string, ip string, key string, messages chan<- string) {
var res string
pemBytes, err := ioutil.ReadFile(key)
if err != nil {
log.Fatal(err)
}
signer, err := ssh.ParsePrivateKey(pemBytes)
if err != nil {
log.Fatalf("parse key failed:%v", err)
}
config := &ssh.ClientConfig{
User: user,
Auth: []ssh.AuthMethod{ssh.PublicKeys(signer)},
}
conn, err := ssh.Dial("tcp", ip+":22", config)
if err != nil {
log.Fatalf("dial failed:%v", err)
}
defer conn.Close()
session, err := conn.NewSession()
if err != nil {
log.Fatalf("session failed:%v", err)
}
defer session.Close()
var stdoutBuf bytes.Buffer
session.Stdout = &stdoutBuf
err = session.Run(cmd)
if err != nil {
// upon dispatching a query that can result in Process exited with 1
// it shouldn't completly fail, the thing here is that that OS
// was not compatible with that query, so we handle some cases here
res += fmt.Sprintf("\nMachine: %v@%v\n", user, ip)
if strings.Contains(cmd, "apt_resources") || strings.Contains(cmd, "deb_packages") {
res += fmt.Sprintf("Target is RPM based, query won't return anything: %v\n", cmd)
} else if strings.Contains(cmd, "rpm_package_files") || strings.Contains(cmd, "rpm_packages") {
res += fmt.Sprintf("Target is APT based, query won't return anything: %v\n", cmd)
} else {
res += fmt.Sprintf("No response for the following query from this machine : %v\n", cmd)
}
messages <- res
} else {
res += fmt.Sprintf("\nMachine: %v@%v\n", user, ip)
res += stdoutBuf.String()
res = string(res[:])
messages <- res
}
}
