mirror of
https://github.com/nwtgck/handy-sshd.git
synced 2025-06-07 22:53:05 +00:00
103 lines
2.6 KiB
Go
103 lines
2.6 KiB
Go
package cmd
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import (
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"github.com/stretchr/testify/assert"
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"golang.org/x/crypto/ssh"
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"io"
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"net"
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"os/exec"
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"strconv"
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"testing"
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)
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func getAvailableTcpPort() int {
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ln, err := net.Listen("tcp", ":0")
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if err != nil {
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panic(err)
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}
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defer ln.Close()
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return ln.Addr().(*net.TCPAddr).Port
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}
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func waitTCPServer(port int) {
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for {
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conn, err := net.Dial("tcp", net.JoinHostPort("127.0.0.1", strconv.Itoa(port)))
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if err == nil {
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conn.Close()
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break
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}
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}
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}
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func assertExec(t *testing.T, client *ssh.Client) {
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session, err := client.NewSession()
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assert.NoError(t, err)
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defer session.Close()
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whoamiBytes, err := session.Output("whoami")
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assert.NoError(t, err)
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expectedWhoamiBytes, err := exec.Command("whoami").Output()
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assert.NoError(t, err)
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assert.Equal(t, string(whoamiBytes), string(expectedWhoamiBytes))
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}
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func assertLocalPortForwarding(t *testing.T, client *ssh.Client) {
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var remoteTcpPort int
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acceptedConnChan := make(chan net.Conn)
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{
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ln, err := net.Listen("tcp", ":0")
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assert.NoError(t, err)
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remoteTcpPort = ln.Addr().(*net.TCPAddr).Port
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go func() {
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conn, err := ln.Accept()
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assert.NoError(t, err)
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acceptedConnChan <- conn
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}()
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}
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raddr := &net.TCPAddr{IP: net.ParseIP("127.0.0.1"), Port: remoteTcpPort}
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conn, err := client.DialTCP("tcp", nil, raddr)
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assert.NoError(t, err)
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defer conn.Close()
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acceptedConn := <-acceptedConnChan
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defer acceptedConn.Close()
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{
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localToRemote := [3]byte{1, 2, 3}
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_, err = conn.Write(localToRemote[:])
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assert.NoError(t, err)
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var buf [len(localToRemote)]byte
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_, err = io.ReadFull(acceptedConn, buf[:])
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assert.NoError(t, err)
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assert.Equal(t, buf, localToRemote)
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}
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{
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remoteToLocal := [4]byte{10, 20, 30, 40}
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_, err = acceptedConn.Write(remoteToLocal[:])
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assert.NoError(t, err)
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var buf [len(remoteToLocal)]byte
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_, err = io.ReadFull(conn, buf[:])
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assert.NoError(t, err)
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assert.Equal(t, buf, remoteToLocal)
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}
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}
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func assertRemotePortForwardingTODO(t *testing.T, client *ssh.Client) {
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remotePort := getAvailableTcpPort()
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acceptedConnChan := make(chan net.Conn)
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var _ = acceptedConnChan
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ln, err := client.Listen("tcp", net.JoinHostPort("127.0.0.1", strconv.Itoa(remotePort)))
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var _ = ln
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assert.NoError(t, err)
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go func() {
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//conn, err := ln.Accept()
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//assert.NoError(t, err)
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//acceptedConnChan <- conn
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}()
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conn, err := net.Dial("tcp", net.JoinHostPort("127.0.0.1", strconv.Itoa(remotePort)))
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assert.NoError(t, err)
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defer conn.Close()
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// FIXME: implement but the following suspends
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//acceptedConn := <-acceptedConnChan
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//defer acceptedConn.Close()
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// TODO: conn <--> acceptedConn communication
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}
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