364 lines
10 KiB
Go
364 lines
10 KiB
Go
// Copyright 2020 The gVisor Authors.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package testbench
|
|
|
|
import (
|
|
"context"
|
|
"flag"
|
|
"net"
|
|
"strconv"
|
|
"syscall"
|
|
"testing"
|
|
"time"
|
|
|
|
pb "gvisor.dev/gvisor/test/packetimpact/proto/posix_server_go_proto"
|
|
|
|
"golang.org/x/sys/unix"
|
|
"google.golang.org/grpc"
|
|
"google.golang.org/grpc/keepalive"
|
|
)
|
|
|
|
var (
|
|
posixServerIP = flag.String("posix_server_ip", "", "ip address to listen to for UDP commands")
|
|
posixServerPort = flag.Int("posix_server_port", 40000, "port to listen to for UDP commands")
|
|
rpcTimeout = flag.Duration("rpc_timeout", 100*time.Millisecond, "gRPC timeout")
|
|
rpcKeepalive = flag.Duration("rpc_keepalive", 10*time.Second, "gRPC keepalive")
|
|
)
|
|
|
|
// DUT communicates with the DUT to force it to make POSIX calls.
|
|
type DUT struct {
|
|
t *testing.T
|
|
conn *grpc.ClientConn
|
|
posixServer PosixClient
|
|
}
|
|
|
|
// NewDUT creates a new connection with the DUT over gRPC.
|
|
func NewDUT(t *testing.T) DUT {
|
|
flag.Parse()
|
|
posixServerAddress := *posixServerIP + ":" + strconv.Itoa(*posixServerPort)
|
|
conn, err := grpc.Dial(posixServerAddress, grpc.WithInsecure(), grpc.WithKeepaliveParams(keepalive.ClientParameters{Timeout: *rpcKeepalive}))
|
|
if err != nil {
|
|
t.Fatalf("failed to grpc.Dial(%s): %s", posixServerAddress, err)
|
|
}
|
|
posixServer := NewPosixClient(conn)
|
|
return DUT{
|
|
t: t,
|
|
conn: conn,
|
|
posixServer: posixServer,
|
|
}
|
|
}
|
|
|
|
// TearDown closes the underlying connection.
|
|
func (dut *DUT) TearDown() {
|
|
dut.conn.Close()
|
|
}
|
|
|
|
// SocketWithErrno calls socket on the DUT and returns the fd and errno.
|
|
func (dut *DUT) SocketWithErrno(domain, typ, proto int32) (int32, error) {
|
|
dut.t.Helper()
|
|
req := pb.SocketRequest{
|
|
Domain: domain,
|
|
Type: typ,
|
|
Protocol: proto,
|
|
}
|
|
ctx := context.Background()
|
|
resp, err := dut.posixServer.Socket(ctx, &req)
|
|
if err != nil {
|
|
dut.t.Fatalf("failed to call Socket: %s", err)
|
|
}
|
|
return resp.GetFd(), syscall.Errno(resp.GetErrno_())
|
|
}
|
|
|
|
// Socket calls socket on the DUT and returns the file descriptor. If socket
|
|
// fails on the DUT, the test ends.
|
|
func (dut *DUT) Socket(domain, typ, proto int32) int32 {
|
|
dut.t.Helper()
|
|
fd, err := dut.SocketWithErrno(domain, typ, proto)
|
|
if fd < 0 {
|
|
dut.t.Fatalf("failed to create socket: %s", err)
|
|
}
|
|
return fd
|
|
}
|
|
|
|
func (dut *DUT) sockaddrToProto(sa unix.Sockaddr) *pb.Sockaddr {
|
|
dut.t.Helper()
|
|
switch s := sa.(type) {
|
|
case *unix.SockaddrInet4:
|
|
return &pb.Sockaddr{
|
|
Sockaddr: &pb.Sockaddr_In{
|
|
In: &pb.SockaddrIn{
|
|
Family: unix.AF_INET,
|
|
Port: uint32(s.Port),
|
|
Addr: s.Addr[:],
|
|
},
|
|
},
|
|
}
|
|
case *unix.SockaddrInet6:
|
|
return &pb.Sockaddr{
|
|
Sockaddr: &pb.Sockaddr_In6{
|
|
In6: &pb.SockaddrIn6{
|
|
Family: unix.AF_INET6,
|
|
Port: uint32(s.Port),
|
|
Flowinfo: 0,
|
|
ScopeId: s.ZoneId,
|
|
Addr: s.Addr[:],
|
|
},
|
|
},
|
|
}
|
|
}
|
|
dut.t.Fatalf("can't parse Sockaddr: %+v", sa)
|
|
return nil
|
|
}
|
|
|
|
func (dut *DUT) protoToSockaddr(sa *pb.Sockaddr) unix.Sockaddr {
|
|
dut.t.Helper()
|
|
switch s := sa.Sockaddr.(type) {
|
|
case *pb.Sockaddr_In:
|
|
ret := unix.SockaddrInet4{
|
|
Port: int(s.In.GetPort()),
|
|
}
|
|
copy(ret.Addr[:], s.In.GetAddr())
|
|
return &ret
|
|
case *pb.Sockaddr_In6:
|
|
ret := unix.SockaddrInet6{
|
|
Port: int(s.In6.GetPort()),
|
|
ZoneId: s.In6.GetScopeId(),
|
|
}
|
|
copy(ret.Addr[:], s.In6.GetAddr())
|
|
}
|
|
dut.t.Fatalf("can't parse Sockaddr: %+v", sa)
|
|
return nil
|
|
}
|
|
|
|
// BindWithErrno calls bind on the DUT.
|
|
func (dut *DUT) BindWithErrno(fd int32, sa unix.Sockaddr) (int32, error) {
|
|
dut.t.Helper()
|
|
req := pb.BindRequest{
|
|
Sockfd: fd,
|
|
Addr: dut.sockaddrToProto(sa),
|
|
}
|
|
ctx := context.Background()
|
|
resp, err := dut.posixServer.Bind(ctx, &req)
|
|
if err != nil {
|
|
dut.t.Fatalf("failed to call Bind: %s", err)
|
|
}
|
|
return resp.GetRet(), syscall.Errno(resp.GetErrno_())
|
|
}
|
|
|
|
// Bind calls bind on the DUT and causes a fatal test failure if it doesn't
|
|
// succeed.
|
|
func (dut *DUT) Bind(fd int32, sa unix.Sockaddr) {
|
|
dut.t.Helper()
|
|
ret, err := dut.BindWithErrno(fd, sa)
|
|
if ret != 0 {
|
|
dut.t.Fatalf("failed to bind socket: %s", err)
|
|
}
|
|
}
|
|
|
|
// GetSockNameWithErrno calls getsockname on the DUT.
|
|
func (dut *DUT) GetSockNameWithErrno(sockfd int32) (int32, unix.Sockaddr, error) {
|
|
dut.t.Helper()
|
|
req := pb.GetSockNameRequest{
|
|
Sockfd: sockfd,
|
|
}
|
|
ctx := context.Background()
|
|
resp, err := dut.posixServer.GetSockName(ctx, &req)
|
|
if err != nil {
|
|
dut.t.Fatalf("failed to call Bind: %s", err)
|
|
}
|
|
return resp.GetRet(), dut.protoToSockaddr(resp.GetAddr()), syscall.Errno(resp.GetErrno_())
|
|
}
|
|
|
|
// GetSockName calls getsockname on the DUT and causes a fatal test failure if
|
|
// it doens't succeed.
|
|
func (dut *DUT) GetSockName(sockfd int32) unix.Sockaddr {
|
|
dut.t.Helper()
|
|
ret, sa, err := dut.GetSockNameWithErrno(sockfd)
|
|
if ret != 0 {
|
|
dut.t.Fatalf("failed to getsockname: %s", err)
|
|
}
|
|
return sa
|
|
}
|
|
|
|
// ListenWithErrno calls listen on the DUT.
|
|
func (dut *DUT) ListenWithErrno(sockfd, backlog int32) (int32, error) {
|
|
dut.t.Helper()
|
|
req := pb.ListenRequest{
|
|
Sockfd: sockfd,
|
|
Backlog: backlog,
|
|
}
|
|
ctx, cancel := context.WithTimeout(context.Background(), *rpcTimeout)
|
|
defer cancel()
|
|
resp, err := dut.posixServer.Listen(ctx, &req)
|
|
if err != nil {
|
|
dut.t.Fatalf("failed to call Listen: %s", err)
|
|
}
|
|
return resp.GetRet(), syscall.Errno(resp.GetErrno_())
|
|
}
|
|
|
|
// Listen calls listen on the DUT and causes a fatal test failure if it doesn't
|
|
// succeed.
|
|
func (dut *DUT) Listen(sockfd, backlog int32) {
|
|
dut.t.Helper()
|
|
ret, err := dut.ListenWithErrno(sockfd, backlog)
|
|
if ret != 0 {
|
|
dut.t.Fatalf("failed to listen: %s", err)
|
|
}
|
|
}
|
|
|
|
// AcceptWithErrno calls accept on the DUT.
|
|
func (dut *DUT) AcceptWithErrno(sockfd int32) (int32, unix.Sockaddr, error) {
|
|
dut.t.Helper()
|
|
req := pb.AcceptRequest{
|
|
Sockfd: sockfd,
|
|
}
|
|
ctx, cancel := context.WithTimeout(context.Background(), *rpcTimeout)
|
|
defer cancel()
|
|
resp, err := dut.posixServer.Accept(ctx, &req)
|
|
if err != nil {
|
|
dut.t.Fatalf("failed to call Accept: %s", err)
|
|
}
|
|
return resp.GetFd(), dut.protoToSockaddr(resp.GetAddr()), syscall.Errno(resp.GetErrno_())
|
|
}
|
|
|
|
// Accept calls accept on the DUT and causes a fatal test failure if it doesn't
|
|
// succeed.
|
|
func (dut *DUT) Accept(sockfd int32) (int32, unix.Sockaddr) {
|
|
dut.t.Helper()
|
|
fd, sa, err := dut.AcceptWithErrno(sockfd)
|
|
if fd < 0 {
|
|
dut.t.Fatalf("failed to accept: %s", err)
|
|
}
|
|
return fd, sa
|
|
}
|
|
|
|
// SetSockOptWithErrno calls setsockopt on the DUT.
|
|
func (dut *DUT) SetSockOptWithErrno(sockfd, level, optname int32, optval []byte) (int32, error) {
|
|
dut.t.Helper()
|
|
req := pb.SetSockOptRequest{
|
|
Sockfd: sockfd,
|
|
Level: level,
|
|
Optname: optname,
|
|
Optval: optval,
|
|
}
|
|
ctx, cancel := context.WithTimeout(context.Background(), *rpcTimeout)
|
|
defer cancel()
|
|
resp, err := dut.posixServer.SetSockOpt(ctx, &req)
|
|
if err != nil {
|
|
dut.t.Fatalf("failed to call SetSockOpt: %s", err)
|
|
}
|
|
return resp.GetRet(), syscall.Errno(resp.GetErrno_())
|
|
}
|
|
|
|
// SetSockOpt calls setsockopt on the DUT and causes a fatal test failure if it
|
|
// doesn't succeed.
|
|
func (dut *DUT) SetSockOpt(sockfd, level, optname int32, optval []byte) {
|
|
dut.t.Helper()
|
|
ret, err := dut.SetSockOptWithErrno(sockfd, level, optname, optval)
|
|
if ret != 0 {
|
|
dut.t.Fatalf("failed to SetSockOpt: %s", err)
|
|
}
|
|
}
|
|
|
|
// SetSockOptTimevalWithErrno calls setsockopt with the timeval converted to
|
|
// bytes.
|
|
func (dut *DUT) SetSockOptTimevalWithErrno(sockfd, level, optname int32, tv *unix.Timeval) (int32, error) {
|
|
dut.t.Helper()
|
|
timeval := pb.Timeval{
|
|
Seconds: int64(tv.Sec),
|
|
Microseconds: int64(tv.Usec),
|
|
}
|
|
req := pb.SetSockOptTimevalRequest{
|
|
Sockfd: sockfd,
|
|
Level: level,
|
|
Optname: optname,
|
|
Timeval: &timeval,
|
|
}
|
|
ctx, cancel := context.WithTimeout(context.Background(), *rpcTimeout)
|
|
defer cancel()
|
|
resp, err := dut.posixServer.SetSockOptTimeval(ctx, &req)
|
|
if err != nil {
|
|
dut.t.Fatalf("failed to call SetSockOptTimeval: %s", err)
|
|
}
|
|
return resp.GetRet(), syscall.Errno(resp.GetErrno_())
|
|
}
|
|
|
|
// SetSockOptTimeval calls setsockopt on the DUT and causes a fatal test failure
|
|
// if it doesn't succeed.
|
|
func (dut *DUT) SetSockOptTimeval(sockfd, level, optname int32, tv *unix.Timeval) {
|
|
dut.t.Helper()
|
|
ret, err := dut.SetSockOptTimevalWithErrno(sockfd, level, optname, tv)
|
|
if ret != 0 {
|
|
dut.t.Fatalf("failed to SetSockOptTimeval: %s", err)
|
|
}
|
|
}
|
|
|
|
// CloseWithErrno calls close on the DUT.
|
|
func (dut *DUT) CloseWithErrno(fd int32) (int32, error) {
|
|
dut.t.Helper()
|
|
req := pb.CloseRequest{
|
|
Fd: fd,
|
|
}
|
|
ctx, cancel := context.WithTimeout(context.Background(), *rpcTimeout)
|
|
defer cancel()
|
|
resp, err := dut.posixServer.Close(ctx, &req)
|
|
if err != nil {
|
|
dut.t.Fatalf("failed to call Close: %s", err)
|
|
}
|
|
return resp.GetRet(), syscall.Errno(resp.GetErrno_())
|
|
}
|
|
|
|
// Close calls close on the DUT and causes a fatal test failure if it doesn't
|
|
// succeed.
|
|
func (dut *DUT) Close(fd int32) {
|
|
dut.t.Helper()
|
|
ret, err := dut.CloseWithErrno(fd)
|
|
if ret != 0 {
|
|
dut.t.Fatalf("failed to close: %s", err)
|
|
}
|
|
}
|
|
|
|
// CreateListener makes a new TCP connection. If it fails, the test ends.
|
|
func (dut *DUT) CreateListener(typ, proto, backlog int32) (int32, uint16) {
|
|
dut.t.Helper()
|
|
addr := net.ParseIP(*remoteIPv4)
|
|
var fd int32
|
|
if addr.To4() != nil {
|
|
fd = dut.Socket(unix.AF_INET, typ, proto)
|
|
sa := unix.SockaddrInet4{}
|
|
copy(sa.Addr[:], addr.To4())
|
|
dut.Bind(fd, &sa)
|
|
} else if addr.To16() != nil {
|
|
fd = dut.Socket(unix.AF_INET6, typ, proto)
|
|
sa := unix.SockaddrInet6{}
|
|
copy(sa.Addr[:], addr.To16())
|
|
dut.Bind(fd, &sa)
|
|
} else {
|
|
dut.t.Fatal("unknown ip addr type for remoteIP")
|
|
}
|
|
sa := dut.GetSockName(fd)
|
|
var port int
|
|
switch s := sa.(type) {
|
|
case *unix.SockaddrInet4:
|
|
port = s.Port
|
|
case *unix.SockaddrInet6:
|
|
port = s.Port
|
|
default:
|
|
dut.t.Fatalf("unknown sockaddr type from getsockname: %t", sa)
|
|
}
|
|
dut.Listen(fd, backlog)
|
|
return fd, uint16(port)
|
|
}
|