Xray-core/app/proxyman/command/command.go
2022-05-18 15:29:01 +08:00

153 lines
4.5 KiB
Go

package command
import (
"context"
"github.com/xtls/xray-core/common"
"github.com/xtls/xray-core/core"
"github.com/xtls/xray-core/features/inbound"
"github.com/xtls/xray-core/features/outbound"
"github.com/xtls/xray-core/proxy"
grpc "google.golang.org/grpc"
)
// InboundOperation is the interface for operations that applies to inbound handlers.
type InboundOperation interface {
// ApplyInbound applies this operation to the given inbound handler.
ApplyInbound(context.Context, inbound.Handler) error
}
// OutboundOperation is the interface for operations that applies to outbound handlers.
type OutboundOperation interface {
// ApplyOutbound applies this operation to the given outbound handler.
ApplyOutbound(context.Context, outbound.Handler) error
}
func getInbound(handler inbound.Handler) (proxy.Inbound, error) {
gi, ok := handler.(proxy.GetInbound)
if !ok {
return nil, newError("can't get inbound proxy from handler.")
}
return gi.GetInbound(), nil
}
// ApplyInbound implements InboundOperation.
func (op *AddUserOperation) ApplyInbound(ctx context.Context, handler inbound.Handler) error {
p, err := getInbound(handler)
if err != nil {
return err
}
um, ok := p.(proxy.UserManager)
if !ok {
return newError("proxy is not a UserManager")
}
mUser, err := op.User.ToMemoryUser()
if err != nil {
return newError("failed to parse user").Base(err)
}
return um.AddUser(ctx, mUser)
}
// ApplyInbound implements InboundOperation.
func (op *RemoveUserOperation) ApplyInbound(ctx context.Context, handler inbound.Handler) error {
p, err := getInbound(handler)
if err != nil {
return err
}
um, ok := p.(proxy.UserManager)
if !ok {
return newError("proxy is not a UserManager")
}
return um.RemoveUser(ctx, op.Email)
}
type handlerServer struct {
s *core.Instance
ihm inbound.Manager
ohm outbound.Manager
}
func (s *handlerServer) AddInbound(ctx context.Context, request *AddInboundRequest) (*AddInboundResponse, error) {
if err := core.AddInboundHandler(s.s, request.Inbound); err != nil {
return nil, err
}
return &AddInboundResponse{}, nil
}
func (s *handlerServer) RemoveInbound(ctx context.Context, request *RemoveInboundRequest) (*RemoveInboundResponse, error) {
return &RemoveInboundResponse{}, s.ihm.RemoveHandler(ctx, request.Tag)
}
func (s *handlerServer) AlterInbound(ctx context.Context, request *AlterInboundRequest) (*AlterInboundResponse, error) {
rawOperation, err := request.Operation.GetInstance()
if err != nil {
return nil, newError("unknown operation").Base(err)
}
operation, ok := rawOperation.(InboundOperation)
if !ok {
return nil, newError("not an inbound operation")
}
handler, err := s.ihm.GetHandler(ctx, request.Tag)
if err != nil {
return nil, newError("failed to get handler: ", request.Tag).Base(err)
}
return &AlterInboundResponse{}, operation.ApplyInbound(ctx, handler)
}
func (s *handlerServer) AddOutbound(ctx context.Context, request *AddOutboundRequest) (*AddOutboundResponse, error) {
if err := core.AddOutboundHandler(s.s, request.Outbound); err != nil {
return nil, err
}
return &AddOutboundResponse{}, nil
}
func (s *handlerServer) RemoveOutbound(ctx context.Context, request *RemoveOutboundRequest) (*RemoveOutboundResponse, error) {
return &RemoveOutboundResponse{}, s.ohm.RemoveHandler(ctx, request.Tag)
}
func (s *handlerServer) AlterOutbound(ctx context.Context, request *AlterOutboundRequest) (*AlterOutboundResponse, error) {
rawOperation, err := request.Operation.GetInstance()
if err != nil {
return nil, newError("unknown operation").Base(err)
}
operation, ok := rawOperation.(OutboundOperation)
if !ok {
return nil, newError("not an outbound operation")
}
handler := s.ohm.GetHandler(request.Tag)
return &AlterOutboundResponse{}, operation.ApplyOutbound(ctx, handler)
}
func (s *handlerServer) mustEmbedUnimplementedHandlerServiceServer() {}
type service struct {
v *core.Instance
}
func (s *service) Register(server *grpc.Server) {
hs := &handlerServer{
s: s.v,
}
common.Must(s.v.RequireFeatures(func(im inbound.Manager, om outbound.Manager) {
hs.ihm = im
hs.ohm = om
}))
RegisterHandlerServiceServer(server, hs)
// For compatibility purposes
vCoreDesc := HandlerService_ServiceDesc
vCoreDesc.ServiceName = "v2ray.core.app.proxyman.command.HandlerService"
server.RegisterService(&vCoreDesc, hs)
}
func init() {
common.Must(common.RegisterConfig((*Config)(nil), func(ctx context.Context, cfg interface{}) (interface{}, error) {
s := core.MustFromContext(ctx)
return &service{v: s}, nil
}))
}