From 5160eee3870a3f04f5a355fe1ff4da3f93621c8b Mon Sep 17 00:00:00 2001 From: xmdhs Date: Sun, 21 May 2023 18:11:50 +0800 Subject: [PATCH] first commit --- go.mod | 17 ++++++++ go.sum | 80 ++++++++++++++++++++++++++++++++++ main.go | 25 +++++++++++ natmap/natmap.go | 67 +++++++++++++++++++++++++++++ reuse/reuse.go | 29 +++++++++++++ stun/stun.go | 35 +++++++++++++++ upnp/upnp.go | 110 +++++++++++++++++++++++++++++++++++++++++++++++ 7 files changed, 363 insertions(+) create mode 100644 go.mod create mode 100644 go.sum create mode 100644 main.go create mode 100644 natmap/natmap.go create mode 100644 reuse/reuse.go create mode 100644 stun/stun.go create mode 100644 upnp/upnp.go diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..b0b39df --- /dev/null +++ b/go.mod @@ -0,0 +1,17 @@ +module github.com/xmdhs/natupnp + +go 1.20 + +require github.com/pion/stun v0.5.2 + +require ( + github.com/huin/goupnp v1.2.0 + github.com/pion/dtls/v2 v2.2.6 // indirect + github.com/pion/logging v0.2.2 // indirect + github.com/pion/transport/v2 v2.2.0 // indirect + github.com/pion/udp/v2 v2.0.1 // indirect + github.com/portmapping/go-reuse v0.0.3 + golang.org/x/crypto v0.5.0 // indirect + golang.org/x/sync v0.2.0 + golang.org/x/sys v0.7.0 // indirect +) diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..9f7f3e4 --- /dev/null +++ b/go.sum @@ -0,0 +1,80 @@ +github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c= +github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/huin/goupnp v1.2.0 h1:uOKW26NG1hsSSbXIZ1IR7XP9Gjd1U8pnLaCMgntmkmY= +github.com/huin/goupnp v1.2.0/go.mod h1:gnGPsThkYa7bFi/KWmEysQRf48l2dvR5bxr2OFckNX8= +github.com/pion/dtls/v2 v2.2.6 h1:yXMxKr0Skd+Ub6A8UqXTRLSywskx93ooMRHsQUtd+Z4= +github.com/pion/dtls/v2 v2.2.6/go.mod h1:t8fWJCIquY5rlQZwA2yWxUS1+OCrAdXrhVKXB5oD/wY= +github.com/pion/logging v0.2.2 h1:M9+AIj/+pxNsDfAT64+MAVgJO0rsyLnoJKCqf//DoeY= +github.com/pion/logging v0.2.2/go.mod h1:k0/tDVsRCX2Mb2ZEmTqNa7CWsQPc+YYCB7Q+5pahoms= +github.com/pion/stun v0.5.2 h1:J/8glQnDV91dfk2+ZnGN0o9bUJgABhTNljwfQWByoXE= +github.com/pion/stun v0.5.2/go.mod h1:TNo1HjyjaFVpMZsvowqPeV8TfwRytympQC0//neaksA= +github.com/pion/transport/v2 v2.0.2/go.mod h1:vrz6bUbFr/cjdwbnxq8OdDDzHf7JJfGsIRkxfpZoTA0= +github.com/pion/transport/v2 v2.2.0 h1:u5lFqFHkXLMXMzai8tixZDfVjb8eOjH35yCunhPeb1c= +github.com/pion/transport/v2 v2.2.0/go.mod h1:AdSw4YBZVDkZm8fpoz+fclXyQwANWmZAlDuQdctTThQ= +github.com/pion/udp/v2 v2.0.1 h1:xP0z6WNux1zWEjhC7onRA3EwwSliXqu1ElUZAQhUP54= +github.com/pion/udp/v2 v2.0.1/go.mod h1:B7uvTMP00lzWdyMr/1PVZXtV3wpPIxBRd4Wl6AksXn8= +github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM= +github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4= +github.com/portmapping/go-reuse v0.0.3 h1:iY0JDxTTUaYopewHL0CLN5BqJ0BvDP48VzC2osPpkBQ= +github.com/portmapping/go-reuse v0.0.3/go.mod h1:xKeiOLrJpAUOineqiMEm1bpy6cq0vTdpoiebdRD45mo= +github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME= +github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw= +github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo= +github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg= +github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU= +github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4= +github.com/stretchr/testify v1.8.2 h1:+h33VjcLVPDHtOdpUCuF+7gSuG3yGIftsP1YvFihtJ8= +github.com/stretchr/testify v1.8.2/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4= +github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY= +golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w= +golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc= +golang.org/x/crypto v0.5.0 h1:U/0M97KRkSFvyD/3FSmdP5W5swImpNgle/EHFhOsQPE= +golang.org/x/crypto v0.5.0/go.mod h1:NK/OQwhpMQP3MwtdjgLlYHnH9ebylxKWv3e0fK+mkQU= +golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4= +golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs= +golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s= +golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg= +golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c= +golang.org/x/net v0.5.0/go.mod h1:DivGGAXEgPSlEBzxGzZI+ZLohi+xUj054jfeKui00ws= +golang.org/x/net v0.6.0/go.mod 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s, err := natmap.NatMap(context.Background(), "stun.sipnet.com:3478", "192.168.23.104", 9999, func(s string) { + log.Println(s) + }) + if err != nil { + panic(err) + } + + defer m.Close() + + fmt.Println(s) + + os.Stdin.Read(make([]byte, 1)) +} diff --git a/natmap/natmap.go b/natmap/natmap.go new file mode 100644 index 0000000..31e7b81 --- /dev/null +++ b/natmap/natmap.go @@ -0,0 +1,67 @@ +package natmap + +import ( + "context" + "fmt" + "net" + "net/http" + "strconv" + "time" + + "github.com/xmdhs/natupnp/reuse" + "github.com/xmdhs/natupnp/stun" + "github.com/xmdhs/natupnp/upnp" +) + +type Map struct { + cancel func() +} + +func NatMap(ctx context.Context, stunAddr string, host string, port uint16, log func(string)) (*Map, string, error) { + m := Map{} + ctx, cancel := context.WithCancel(ctx) + m.cancel = cancel + err := upnp.AddPortMapping(ctx, "", port, "TCP", port, host, true, "github.com/xmdhs/natupnp", 0) + if err != nil { + return nil, "", fmt.Errorf("NatMap: %w", err) + } + go keepalive(ctx, port, log) + + stunConn, err := reuse.DialContext(ctx, "tcp", "0.0.0.0:"+strconv.Itoa(int(port)), stunAddr) + if err != nil { + return nil, "", fmt.Errorf("NatMap: %w", err) + } + mapAddr, err := stun.GetMappedAddress(ctx, stunConn) + if err != nil { + return nil, "", fmt.Errorf("NatMap: %w", err) + } + + return &m, fmt.Sprintf("%v:%v", mapAddr.IP.String(), mapAddr.Port), nil +} + +func (m Map) Close() error { + m.cancel() + return nil +} + +func keepalive(ctx context.Context, port uint16, log func(string)) { + tr := http.DefaultTransport.(*http.Transport).Clone() + tr.DialContext = func(ctx context.Context, network, addr string) (net.Conn, error) { + return reuse.DialContext(ctx, "tcp", "0.0.0.0:"+strconv.Itoa(int(port)), addr) + } + c := http.Client{Transport: tr} + for { + reqs, err := http.NewRequestWithContext(ctx, "GET", "http://connect.rom.miui.com/generate_204", nil) + if err != nil { + panic(err) + } + rep, err := c.Do(reqs) + if err != nil { + c.CloseIdleConnections() + log(err.Error()) + continue + } + rep.Body.Close() + time.Sleep(10 * time.Second) + } +} diff --git a/reuse/reuse.go b/reuse/reuse.go new file mode 100644 index 0000000..6ca70cc --- /dev/null +++ b/reuse/reuse.go @@ -0,0 +1,29 @@ +package reuse + +import ( + "context" + "fmt" + "net" + + "github.com/portmapping/go-reuse" +) + +func DialContext(ctx context.Context, network, laddr, raddr string) (net.Conn, error) { + nla, err := reuse.ResolveAddr(network, laddr) + if err != nil { + return nil, fmt.Errorf("resolving local addr: %w", err) + } + d := net.Dialer{ + Control: reuse.Control, + LocalAddr: nla, + } + return d.DialContext(ctx, network, raddr) +} + +var listenConfig = net.ListenConfig{ + Control: reuse.Control, +} + +func Listen(ctx context.Context, network, address string) (net.Listener, error) { + return listenConfig.Listen(context.Background(), network, address) +} diff --git a/stun/stun.go b/stun/stun.go new file mode 100644 index 0000000..722b06d --- /dev/null +++ b/stun/stun.go @@ -0,0 +1,35 @@ +package stun + +import ( + "context" + "fmt" + + "github.com/pion/stun" +) + +func GetMappedAddress(ctx context.Context, coon stun.Connection) (stun.XORMappedAddress, error) { + c, err := stun.NewClient(coon) + if err != nil { + return stun.XORMappedAddress{}, fmt.Errorf("GetMappedAddress: %w", err) + } + defer c.Close() + + var eErr error + var xorAddr stun.XORMappedAddress + if err = c.Do(stun.MustBuild(stun.TransactionID, stun.BindingRequest), func(res stun.Event) { + if res.Error != nil { + eErr = res.Error + return + } + if getErr := xorAddr.GetFrom(res.Message); getErr != nil { + eErr = getErr + return + } + }); err != nil { + return stun.XORMappedAddress{}, fmt.Errorf("GetMappedAddress: %w", err) + } + if eErr != nil { + return stun.XORMappedAddress{}, fmt.Errorf("GetMappedAddress: %w", err) + } + return xorAddr, nil +} diff --git a/upnp/upnp.go b/upnp/upnp.go new file mode 100644 index 0000000..ddb4aab --- /dev/null +++ b/upnp/upnp.go @@ -0,0 +1,110 @@ +package upnp + +import ( + "context" + "errors" + "fmt" + + "github.com/huin/goupnp/dcps/ocf/internetgateway2" + "golang.org/x/sync/errgroup" +) + +func AddPortMapping(ctx context.Context, + NewRemoteHost string, + NewExternalPort uint16, + NewProtocol string, + NewInternalPort uint16, + NewInternalClient string, + NewEnabled bool, + NewPortMappingDescription string, + NewLeaseDuration uint32, +) error { + clients, err := pickRouterClient(ctx) + if err != nil { + return fmt.Errorf("AddPortMapping: %w", err) + } + + tasks, _ := errgroup.WithContext(ctx) + + for _, v := range clients { + v := v + tasks.Go(func() error { + return v.AddPortMapping(NewRemoteHost, NewExternalPort, NewProtocol, NewInternalPort, NewInternalClient, NewEnabled, NewPortMappingDescription, NewLeaseDuration) + }) + } + + if err := tasks.Wait(); err != nil { + return fmt.Errorf("AddPortMapping: %w", err) + } + + return nil +} + +type routerClient interface { + AddPortMapping( + NewRemoteHost string, + NewExternalPort uint16, + NewProtocol string, + NewInternalPort uint16, + NewInternalClient string, + NewEnabled bool, + NewPortMappingDescription string, + NewLeaseDuration uint32, + ) (err error) + + GetExternalIPAddress() ( + NewExternalIPAddress string, + err error, + ) +} + +func pickRouterClient(ctx context.Context) ([]routerClient, error) { + tasks, _ := errgroup.WithContext(ctx) + // Request each type of client in parallel, and return what is found. + var ip1Clients []*internetgateway2.WANIPConnection1 + tasks.Go(func() error { + var err error + ip1Clients, _, err = internetgateway2.NewWANIPConnection1Clients() + return err + }) + var ip2Clients []*internetgateway2.WANIPConnection2 + tasks.Go(func() error { + var err error + ip2Clients, _, err = internetgateway2.NewWANIPConnection2Clients() + return err + }) + var ppp1Clients []*internetgateway2.WANPPPConnection1 + tasks.Go(func() error { + var err error + ppp1Clients, _, err = internetgateway2.NewWANPPPConnection1Clients() + return err + }) + + if err := tasks.Wait(); err != nil { + return nil, fmt.Errorf("pickRouterClient: %w", err) + } + + // Trivial handling for where we find exactly one device to talk to, you + // might want to provide more flexible handling than this if multiple + // devices are found. + switch { + case len(ip2Clients) == 1: + return any2slice[routerClient](ip2Clients), nil + case len(ip1Clients) == 1: + return any2slice[routerClient](ip1Clients), nil + case len(ppp1Clients) == 1: + return any2slice[routerClient](ppp1Clients), nil + default: + return nil, fmt.Errorf("pickRouterClient: %w", ErrNoService) + } +} + +var ErrNoService = errors.New("multiple or no services found") + +func any2slice[T, E any](list []E) []T { + nl := make([]T, 0, len(list)) + for _, v := range list { + nl = append(nl, any(v).(T)) + } + return nl +}