mirror of
https://github.com/fatedier/frp.git
synced 2026-08-23 14:36:40 +00:00
116 lines
2.8 KiB
Go
116 lines
2.8 KiB
Go
// Copyright 2026 The frp Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package ssh
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import (
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"encoding/binary"
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"io"
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"sync"
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"sync/atomic"
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"testing"
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"time"
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"github.com/stretchr/testify/require"
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cryptossh "golang.org/x/crypto/ssh"
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)
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func TestParseExecPayload(t *testing.T) {
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payload := cryptossh.Marshal(&execPayload{Command: "tcp --remote_port 6000"})
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got, ok := parseExecPayload(payload)
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require.True(t, ok)
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require.Equal(t, "tcp --remote_port 6000", got)
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}
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func TestParseExecPayloadRejectsMalformedPayloads(t *testing.T) {
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overflowLength := make([]byte, 5)
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binary.BigEndian.PutUint32(overflowLength[:4], ^uint32(0))
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for _, tc := range []struct {
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name string
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payload []byte
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}{
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{
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name: "empty",
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payload: nil,
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},
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{
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name: "short length prefix",
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payload: []byte{0, 0, 0},
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},
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{
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name: "declared length exceeds remaining payload",
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payload: []byte{0, 0, 0, 2, 'x'},
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},
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{
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name: "overflow length",
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payload: overflowLength,
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},
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} {
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t.Run(tc.name, func(t *testing.T) {
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var (
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got string
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ok bool
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)
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require.NotPanics(t, func() {
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got, ok = parseExecPayload(tc.payload)
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})
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require.False(t, ok)
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require.Empty(t, got)
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})
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}
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}
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type trackingChannel struct {
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active atomic.Int32
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concurrent atomic.Bool
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}
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func (c *trackingChannel) Read([]byte) (int, error) { return 0, io.EOF }
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func (c *trackingChannel) Write(p []byte) (int, error) {
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if c.active.Add(1) != 1 {
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c.concurrent.Store(true)
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}
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time.Sleep(time.Millisecond)
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c.active.Add(-1)
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return len(p), nil
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}
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func (c *trackingChannel) Close() error { return nil }
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func (c *trackingChannel) CloseWrite() error { return nil }
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func (c *trackingChannel) SendRequest(string, bool, []byte) (bool, error) { return false, nil }
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func (c *trackingChannel) Stderr() io.ReadWriter { return nil }
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func TestWriteToClientSerializesChannelWrites(t *testing.T) {
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channel := &trackingChannel{}
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s := &TunnelServer{firstChannel: channel}
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start := make(chan struct{})
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var wg sync.WaitGroup
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for range 8 {
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wg.Go(func() {
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<-start
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s.writeToClient("message")
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})
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}
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close(start)
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wg.Wait()
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if channel.concurrent.Load() {
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t.Fatal("channel writes were concurrent")
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}
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}
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