1
0
mirror of https://github.com/v2fly/v2ray-core.git synced 2024-10-31 00:08:08 -04:00
v2fly/proxy/dokodemo/dokodemo.go

148 lines
3.9 KiB
Go
Raw Normal View History

2015-10-30 10:56:46 -04:00
package dokodemo
2017-12-02 19:04:57 -05:00
//go:generate go run $GOPATH/src/v2ray.com/core/common/errors/errorgen/main.go -pkg dokodemo -path Proxy,Dokodemo
2017-04-08 19:43:25 -04:00
2015-10-30 10:56:46 -04:00
import (
"context"
"time"
2015-10-30 10:56:46 -04:00
"v2ray.com/core"
2016-12-27 18:53:29 -05:00
"v2ray.com/core/common"
2016-12-09 05:35:27 -05:00
"v2ray.com/core/common/buf"
2017-01-13 17:42:39 -05:00
"v2ray.com/core/common/net"
"v2ray.com/core/common/session"
2016-12-29 16:17:12 -05:00
"v2ray.com/core/common/signal"
2018-05-27 07:02:29 -04:00
"v2ray.com/core/common/task"
2016-08-20 14:55:45 -04:00
"v2ray.com/core/proxy"
"v2ray.com/core/transport/internet"
2017-09-06 18:55:15 -04:00
"v2ray.com/core/transport/internet/udp"
2018-04-16 18:31:10 -04:00
"v2ray.com/core/transport/pipe"
2015-10-30 10:56:46 -04:00
)
type DokodemoDoor struct {
policyManager core.PolicyManager
config *Config
address net.Address
port net.Port
2015-10-30 10:56:46 -04:00
}
2017-01-13 17:38:04 -05:00
func New(ctx context.Context, config *Config) (*DokodemoDoor, error) {
2017-01-14 18:57:06 -05:00
if config.NetworkList == nil || config.NetworkList.Size() == 0 {
2017-04-09 09:04:04 -04:00
return nil, newError("no network specified")
2017-01-14 18:57:06 -05:00
}
2018-02-21 11:05:29 -05:00
v := core.MustFromContext(ctx)
2016-05-22 13:32:37 -04:00
d := &DokodemoDoor{
config: config,
address: config.GetPredefinedAddress(),
port: net.Port(config.Port),
policyManager: v.PolicyManager(),
2015-10-30 10:56:46 -04:00
}
return d, nil
2015-10-30 10:56:46 -04:00
}
func (d *DokodemoDoor) Network() net.NetworkList {
return *(d.config.NetworkList)
2015-11-10 18:08:43 -05:00
}
func (d *DokodemoDoor) policy() core.Policy {
config := d.config
p := d.policyManager.ForLevel(config.UserLevel)
if config.Timeout > 0 && config.UserLevel == 0 {
p.Timeouts.ConnectionIdle = time.Duration(config.Timeout) * time.Second
}
return p
}
type hasHandshakeAddress interface {
HandshakeAddress() net.Address
}
func (d *DokodemoDoor) Process(ctx context.Context, network net.Network, conn internet.Connection, dispatcher core.Dispatcher) error {
newError("processing connection from: ", conn.RemoteAddr()).AtDebug().WriteToLog(session.ExportIDToError(ctx))
2017-01-31 06:42:05 -05:00
dest := net.Destination{
Network: network,
Address: d.address,
Port: d.port,
2017-01-31 06:42:05 -05:00
}
if d.config.FollowRedirect {
2017-02-09 16:49:38 -05:00
if origDest, ok := proxy.OriginalTargetFromContext(ctx); ok {
2017-01-31 06:42:05 -05:00
dest = origDest
2018-07-14 16:06:39 -04:00
} else if handshake, ok := conn.(hasHandshakeAddress); ok {
addr := handshake.HandshakeAddress()
if addr != nil {
dest.Address = addr
}
}
2017-01-31 06:42:05 -05:00
}
if !dest.IsValid() || dest.Address == nil {
2017-04-08 19:43:25 -04:00
return newError("unable to get destination")
2017-01-31 06:42:05 -05:00
}
2017-03-31 15:10:33 -04:00
2018-05-25 06:08:28 -04:00
plcy := d.policy()
2017-11-14 18:36:14 -05:00
ctx, cancel := context.WithCancel(ctx)
2018-05-25 06:08:28 -04:00
timer := signal.CancelAfterInactivity(ctx, cancel, plcy.Timeouts.ConnectionIdle)
2017-01-31 06:42:05 -05:00
2018-05-25 06:08:28 -04:00
ctx = core.ContextWithBufferPolicy(ctx, plcy.Buffer)
2018-04-16 18:31:10 -04:00
link, err := dispatcher.Dispatch(ctx, dest)
if err != nil {
2017-04-16 16:48:51 -04:00
return newError("failed to dispatch request").Base(err)
}
2016-05-04 18:24:18 -04:00
2018-04-11 10:45:09 -04:00
requestDone := func() error {
2018-05-25 06:08:28 -04:00
defer timer.SetTimeout(plcy.Timeouts.DownlinkOnly)
2016-12-29 16:17:12 -05:00
2017-01-31 10:49:59 -05:00
chunkReader := buf.NewReader(conn)
2018-04-16 18:31:10 -04:00
if err := buf.Copy(chunkReader, link.Writer, buf.UpdateActivity(timer)); err != nil {
2017-04-08 19:43:25 -04:00
return newError("failed to transport request").Base(err)
2016-11-21 18:17:49 -05:00
}
2015-10-30 10:56:46 -04:00
2016-12-29 16:17:12 -05:00
return nil
2018-04-11 10:45:09 -04:00
}
2016-12-29 16:17:12 -05:00
2018-04-11 10:45:09 -04:00
responseDone := func() error {
2018-05-25 06:08:28 -04:00
defer timer.SetTimeout(plcy.Timeouts.UplinkOnly)
2018-02-19 10:53:07 -05:00
2017-05-02 17:36:37 -04:00
var writer buf.Writer
if network == net.Network_TCP {
writer = buf.NewWriter(conn)
} else {
2017-09-06 18:55:15 -04:00
//if we are in TPROXY mode, use linux's udp forging functionality
if !d.config.FollowRedirect {
writer = buf.NewSequentialWriter(conn)
} else {
2017-10-26 15:07:33 -04:00
srca := net.UDPAddr{IP: dest.Address.IP(), Port: int(dest.Port.Value())}
2017-09-06 18:55:15 -04:00
origsend, err := udp.TransmitSocket(&srca, conn.RemoteAddr())
if err != nil {
return err
}
writer = buf.NewSequentialWriter(origsend)
}
2017-05-02 17:36:37 -04:00
}
2018-04-16 18:31:10 -04:00
if err := buf.Copy(link.Reader, writer, buf.UpdateActivity(timer)); err != nil {
2017-04-08 19:43:25 -04:00
return newError("failed to transport response").Base(err)
2016-11-21 18:17:49 -05:00
}
2016-12-29 16:17:12 -05:00
return nil
2018-04-11 10:45:09 -04:00
}
2015-10-30 10:56:46 -04:00
2018-05-27 07:02:29 -04:00
if err := task.Run(task.WithContext(ctx),
task.Parallel(
task.Single(requestDone, task.OnSuccess(task.Close(link.Writer))),
responseDone))(); err != nil {
2018-04-16 18:31:10 -04:00
pipe.CloseError(link.Reader)
pipe.CloseError(link.Writer)
2017-04-08 19:43:25 -04:00
return newError("connection ends").Base(err)
2016-12-29 18:51:39 -05:00
}
return nil
2015-10-30 10:56:46 -04:00
}
2016-05-22 13:32:37 -04:00
func init() {
common.Must(common.RegisterConfig((*Config)(nil), func(ctx context.Context, config interface{}) (interface{}, error) {
2017-01-13 17:38:04 -05:00
return New(ctx, config.(*Config))
}))
2016-05-22 13:32:37 -04:00
}