126 lines
3.8 KiB
Go
126 lines
3.8 KiB
Go
package main
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import (
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"errors"
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"net"
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"strings"
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"testing"
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"time"
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)
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func packetBytes(t *testing.T, id, typ uint32, body string) []byte {
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t.Helper()
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value, err := encodeRCONPacket(id, typ, body)
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if err != nil {
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t.Fatal(err)
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}
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return value
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}
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func fakeRCON(t *testing.T, handler func([]byte) []byte) rconExchange {
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t.Helper()
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listener, err := net.Listen("tcp", "127.0.0.1:0")
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if err != nil {
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t.Fatal(err)
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}
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t.Cleanup(func() { _ = listener.Close() })
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go func() {
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conn, err := listener.Accept()
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if err != nil {
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return
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}
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defer conn.Close()
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_ = conn.SetReadDeadline(time.Now().Add(time.Second))
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buf := make([]byte, 4096)
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n, err := conn.Read(buf)
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if err != nil {
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return
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}
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if response := handler(buf[:n]); response != nil {
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_, _ = conn.Write(response)
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}
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}()
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return func(request []byte) ([]byte, transportResult) {
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conn, err := net.DialTimeout("tcp", listener.Addr().String(), time.Second)
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if err != nil {
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return nil, transportResult(err.Error())
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}
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defer conn.Close()
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_ = conn.SetDeadline(time.Now().Add(time.Second))
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if _, err := conn.Write(request); err != nil {
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return nil, transportResult(err.Error())
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}
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buf := make([]byte, maxRCONResponse)
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n, err := conn.Read(buf)
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if err != nil {
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return nil, transportResult(err.Error())
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}
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return buf[:n], transportResult("")
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}
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}
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func TestAuthenticateSuccessAndFailure(t *testing.T) {
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if result := authenticate(fakeRCON(t, func([]byte) []byte { return packetBytes(t, 1, rconAuthReply, "") }), "secret"); result != authOK {
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t.Fatalf("success: %v", result)
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}
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if result := authenticate(fakeRCON(t, func([]byte) []byte { return packetBytes(t, ^uint32(0), rconAuthReply, "") }), "secret"); result != authUnauthorized {
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t.Fatalf("failure: %v", result)
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}
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}
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func TestExecuteHandlesMultiPacketResponse(t *testing.T) {
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exchange := fakeRCON(t, func(request []byte) []byte {
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packets, err := parseRCONPackets(request)
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if err != nil || len(packets) != 2 || packets[1].body != "announce hello\nsecond line" {
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t.Errorf("unexpected request: %#v %v", packets, err)
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return nil
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}
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return append(packetBytes(t, 1, rconAuthReply, ""), append(packetBytes(t, 2, rconCommandOut, "accepted "), packetBytes(t, 2, rconCommandOut, "done")...)...)
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})
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if result := execute(exchange, "secret", "announce hello\nsecond line"); result != "" {
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t.Fatal(result)
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}
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}
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func TestExecuteShutdownUsesOfficialCommand(t *testing.T) {
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exchange := fakeRCON(t, func(request []byte) []byte {
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packets, err := parseRCONPackets(request)
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if err != nil || len(packets) != 2 || packets[1].body != "shutdown" {
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t.Errorf("unexpected shutdown request: %#v %v", packets, err)
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return nil
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}
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return append(packetBytes(t, 1, rconAuthReply, ""), packetBytes(t, 2, rconCommandOut, "accepted")...)
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})
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if result := execute(exchange, "secret", "shutdown"); result != "" {
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t.Fatal(result)
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}
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}
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func TestRCONRejectsMalformedAndOversizedPackets(t *testing.T) {
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for _, raw := range [][]byte{{1, 2}, make([]byte, maxRCONResponse+1), packetBytes(t, 1, rconAuthReply, "x")[:12]} {
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if _, err := parseRCONPackets(raw); !errors.Is(err, errRCONMalformed) {
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t.Fatalf("accepted invalid packet: %v", err)
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}
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}
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}
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func TestRCONTimeoutAndConnectionRefused(t *testing.T) {
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timeout := func([]byte) ([]byte, transportResult) { return nil, transportResult("timeout") }
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if result := authenticate(timeout, "secret"); !strings.Contains(string(result), "timeout") {
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t.Fatalf("timeout not returned: %v", result)
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}
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listener, err := net.Listen("tcp", "127.0.0.1:0")
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if err != nil {
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t.Fatal(err)
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}
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address := listener.Addr().String()
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_ = listener.Close()
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refused := func([]byte) ([]byte, transportResult) {
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_, err := net.DialTimeout("tcp", address, 50*time.Millisecond)
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return nil, transportResult(err.Error())
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}
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if result := authenticate(refused, "secret"); result == authOK {
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t.Fatal("connection refusal not returned")
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}
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}
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