mirror of
https://github.com/tailscale/tailscale.git
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2e95313b8b
The upstream crypto package now supports sending banners at any time during authentication, so the Tailscale fork of crypto/ssh is no longer necessary. github.com/tailscale/golang-x-crypto is still needed for some custom ACME autocert functionality. tempfork/gliderlabs is still necessary because of a few other customizations, mostly related to TTY handling. Originally implemented in 46fd4e58a27495263336b86ee961ee28d8c332b7, which was reverted in b60f6b849af1fae1cf343be98f7fb1714c9ea165 to keep the change out of v1.80. Updates #8593 Signed-off-by: Percy Wegmann <percy@tailscale.com>
86 lines
1.9 KiB
Go
86 lines
1.9 KiB
Go
//go:build glidertests
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package ssh
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import (
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"bytes"
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"io"
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"net"
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"strconv"
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"strings"
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"testing"
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gossh "golang.org/x/crypto/ssh"
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)
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var sampleServerResponse = []byte("Hello world")
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func sampleSocketServer() net.Listener {
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l := newLocalListener()
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go func() {
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conn, err := l.Accept()
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if err != nil {
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return
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}
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conn.Write(sampleServerResponse)
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conn.Close()
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}()
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return l
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}
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func newTestSessionWithForwarding(t *testing.T, forwardingEnabled bool) (net.Listener, *gossh.Client, func()) {
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l := sampleSocketServer()
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_, client, cleanup := newTestSession(t, &Server{
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Handler: func(s Session) {},
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LocalPortForwardingCallback: func(ctx Context, destinationHost string, destinationPort uint32) bool {
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addr := net.JoinHostPort(destinationHost, strconv.FormatInt(int64(destinationPort), 10))
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if addr != l.Addr().String() {
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panic("unexpected destinationHost: " + addr)
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}
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return forwardingEnabled
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},
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}, nil)
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return l, client, func() {
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cleanup()
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l.Close()
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}
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}
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func TestLocalPortForwardingWorks(t *testing.T) {
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t.Parallel()
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l, client, cleanup := newTestSessionWithForwarding(t, true)
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defer cleanup()
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conn, err := client.Dial("tcp", l.Addr().String())
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if err != nil {
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t.Fatalf("Error connecting to %v: %v", l.Addr().String(), err)
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}
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result, err := io.ReadAll(conn)
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if err != nil {
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t.Fatal(err)
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}
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if !bytes.Equal(result, sampleServerResponse) {
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t.Fatalf("result = %#v; want %#v", result, sampleServerResponse)
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}
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}
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func TestLocalPortForwardingRespectsCallback(t *testing.T) {
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t.Parallel()
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l, client, cleanup := newTestSessionWithForwarding(t, false)
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defer cleanup()
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_, err := client.Dial("tcp", l.Addr().String())
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if err == nil {
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t.Fatalf("Expected error connecting to %v but it succeeded", l.Addr().String())
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}
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if !strings.Contains(err.Error(), "port forwarding is disabled") {
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t.Fatalf("Expected permission error but got %#v", err)
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}
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}
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