fix probe resistance

.github/workflows/buildx.yaml

@@ -36,39 +36,54 @@ jobs:
         # Set output parameters.
         echo ::set-output name=tags::${TAGS}
         echo ::set-output name=docker_image::${DOCKER_IMAGE}
+        echo ::set-output name=docker_platforms::linux/386,linux/amd64,linux/arm/v6,linux/arm/v7,linux/arm64/v8
 
-      # https://github.com/actions/checkout
+      # https://github.com/crazy-max/ghaction-docker-buildx
-    - name: Checkout
-      uses: actions/checkout@v2
-
-    - name: Docker Login
-      if: github.event_name != 'pull_request'
-      uses: docker/login-action@v1
-      with:
-        username: ${{ secrets.DOCKER_USERNAME }}
-        password: ${{ secrets.DOCKER_PASSWORD }}
-    
     - name: Set up Docker Buildx
       id: buildx
-      uses: docker/setup-buildx-action@v1
+      uses: crazy-max/ghaction-docker-buildx@v1
-    
+      with:
+        version: latest
+
     - name: Environment
       run: |
         echo home=$HOME
         echo git_ref=$GITHUB_REF
         echo git_sha=$GITHUB_SHA
+        echo version=${{ steps.prepare.outputs.version }}
         echo image=${{ steps.prepare.outputs.docker_image }}
-        echo tags=${{ steps.prepare.outputs.tags }}
+        echo platforms=${{ steps.prepare.outputs.docker_platforms }}
         echo avail_platforms=${{ steps.buildx.outputs.platforms }}
 
-    - name: Build and push
+      # https://github.com/actions/checkout
-      uses: docker/build-push-action@v2
+    - name: Checkout
-      with:
+      uses: actions/checkout@v2
-        builder: ${{ steps.buildx.outputs.name }}
+
-        context: .
+    - name: Docker Buildx (no push)
-        file: ./Dockerfile
+      run: |
-        platforms: linux/386,linux/amd64,linux/arm/v6,linux/arm/v7,linux/arm64/v8
+        docker buildx bake \
-        push: true
+          --set ${{ github.event.repository.name }}.platform=${{ steps.prepare.outputs.docker_platforms }} \
-        tags: ${{ steps.prepare.outputs.tags }}
+          --set ${{ github.event.repository.name }}.output=type=image,push=false \
-        cache-from: type=registry,ref=${{ steps.prepare.outputs.docker_image }}:buildcache
+          --set ${{ github.event.repository.name }}.tags="${{ steps.prepare.outputs.tags }}" \
-        cache-to: type=registry,ref=${{ steps.prepare.outputs.docker_image }}:buildcache,mode=max
+          --file docker-compose.yaml
+
+    - name: Docker Login
+      if: success()
+      env:
+        DOCKER_PASSWORD: ${{ secrets.DOCKER_PASSWORD }}
+      run: |
+        echo "${DOCKER_PASSWORD}" | docker login --username "${{ secrets.DOCKER_USERNAME }}" --password-stdin
+
+    - name: Docker Buildx (push)
+      if: success()
+      run: |
+        docker buildx bake \
+          --set ${{ github.event.repository.name }}.platform=${{ steps.prepare.outputs.docker_platforms }} \
+          --set ${{ github.event.repository.name }}.output=type=image,push=true \
+          --set ${{ github.event.repository.name }}.tags="${{ steps.prepare.outputs.tags }}" \
+          --file docker-compose.yaml
+
+    - name: Clear
+      if: always()
+      run: |
+        rm -f ${HOME}/.docker/config.json

Dockerfile

@@ -1,18 +1,20 @@
-FROM golang:1-alpine as builder
+FROM --platform=$BUILDPLATFORM golang:1-alpine as builder
 
-RUN apk add --no-cache musl-dev gcc
+# Convert TARGETPLATFORM to GOARCH format
+# https://github.com/tonistiigi/xx
+COPY --from=tonistiigi/xx:golang / /
 
-WORKDIR /mod
+ARG TARGETPLATFORM
 
-ADD go.mod go.sum ./
+RUN apk add --no-cache musl-dev git gcc
-
-RUN go mod download
 
 ADD . /src
 
 WORKDIR /src
 
-RUN cd cmd/gost && go env && go build 
+ENV GO111MODULE=on
+
+RUN cd cmd/gost && go env && go build
 
 FROM alpine:latest
 
@@ -20,4 +22,4 @@ WORKDIR /bin/
 
 COPY --from=builder /src/cmd/gost/gost .
 
-ENTRYPOINT ["/bin/gost"]
+ENTRYPOINT ["/bin/gost"]

docker-compose.yaml

@@ -0,0 +1,4 @@
+version: "3.4"
+services:
+  gost:
+    build: .

gost.yml

@@ -5,7 +5,6 @@ log:
 
 services:
 - name: http+tcp
-  url: "http://gost:gost@:8000"
   addr: ":28000"
   handler:
     type: http
@@ -23,7 +22,6 @@ services:
     metadata:
       keepAlive: 15s
 - name: ss
-  url: "ss://chacha20:gost@:8000"
   addr: ":28338"
   handler:
     type: ss
@@ -40,7 +38,6 @@ services:
     metadata:
       keepAlive: 15s
 - name: socks5
-  url: "socks5://gost:gost@:1080"
   addr: ":21080"
   handler:
     type: socks5
@@ -59,7 +56,6 @@ services:
     metadata:
       keepAlive: 15s
 - name: socks5+tcp
-  url: "socks5://gost:gost@:1080"
   addr: ":21081"
   handler:
     type: socks5
@@ -74,7 +70,6 @@ services:
     metadata:
       keepAlive: 15s
 - name: forward
-  url: "socks5://gost:gost@:1080"
   addr: ":10053"
   forwarder:
     targets:
@@ -161,7 +156,6 @@ chains:
     nodes:
     - name: node01
       addr: ":8081"
-      url: "http://gost:gost@:8081"
       # bypass: bypass01
       connector:
         type: http
@@ -173,7 +167,6 @@ chains:
         metadata: {}
     - name: node02
       addr: ":8082"
-      url: "http://gost:gost@:8082"
       # bypass: bypass01
       connector:
         type: http
@@ -192,7 +185,6 @@ chains:
     nodes:
     - name: node03
       addr: ":8083"
-      url: "http://gost:gost@:8083"
       # bypass: bypass01
       connector:
         type: http
@@ -222,7 +214,6 @@ chains:
     nodes:
     - name: node01
       addr: ":21080"
-      url: "http://gost:gost@:8081"
       # bypass: bypass01
       connector:
         type: socks5

pkg/handler/http/handler.go

@@ -287,22 +287,29 @@ func (h *httpHandler) authenticate(conn net.Conn, req *http.Request, resp *http.
 			if !strings.HasPrefix(url, "http") {
 				url = "http://" + url
 			}
-			if r, err := http.Get(url); err == nil {
+			r, err := http.Get(url)
-				resp = r
+			if err != nil {
-				defer r.Body.Close()
+				h.logger.Error(err)
+				break
 			}
+			resp = r
+			defer resp.Body.Close()
 		case "host":
 			cc, err := net.Dial("tcp", pr.Value)
-			if err == nil {
+			if err != nil {
-				defer cc.Close()
+				h.logger.Error(err)
-
+				break
-				req.Write(cc)
-				handler.Transport(conn, cc)
-				return
 			}
+			defer cc.Close()
+
+			req.Write(cc)
+			handler.Transport(conn, cc)
+			return
 		case "file":
 			f, _ := os.Open(pr.Value)
 			if f != nil {
+				defer f.Close()
+
 				resp.StatusCode = http.StatusOK
 				if finfo, _ := f.Stat(); finfo != nil {
 					resp.ContentLength = finfo.Size()
@@ -313,6 +320,9 @@ func (h *httpHandler) authenticate(conn net.Conn, req *http.Request, resp *http.
 		}
 	}
 
+	if resp.Header == nil {
+		resp.Header = http.Header{}
+	}
 	if resp.StatusCode == 0 {
 		resp.StatusCode = http.StatusProxyAuthRequired
 		resp.Header.Add("Proxy-Authenticate", "Basic realm=\"gost\"")
@@ -325,7 +335,6 @@ func (h *httpHandler) authenticate(conn net.Conn, req *http.Request, resp *http.
 
 		h.logger.Info("proxy authentication required")
 	} else {
-		resp.Header = http.Header{}
 		resp.Header.Set("Server", "nginx/1.20.1")
 		resp.Header.Set("Date", time.Now().Format(http.TimeFormat))
 		if resp.StatusCode == http.StatusOK {

pkg/handler/http2/handler.go

@@ -1,11 +1,15 @@
 package http2
 
 import (
+	"bufio"
+	"bytes"
 	"context"
 	"encoding/base64"
 	"encoding/binary"
 	"errors"
 	"hash/crc32"
+	"io"
+	"io/ioutil"
 	"net"
 	"net/http"
 	"net/http/httputil"
@@ -130,33 +134,22 @@ func (h *http2Handler) roundTrip(ctx context.Context, w http.ResponseWriter, req
 		w.Header().Set("Proxy-Agent", h.md.proxyAgent)
 	}
 
-	/*
-		if !Can("tcp", host, h.options.Whitelist, h.options.Blacklist) {
-			log.Logf("[http2] %s - %s : Unauthorized to tcp connect to %s",
-				r.RemoteAddr, laddr, host)
-			w.WriteHeader(http.StatusForbidden)
-			return
-		}
-	*/
-
 	if h.options.Bypass != nil && h.options.Bypass.Contains(addr) {
 		w.WriteHeader(http.StatusForbidden)
 		h.logger.Info("bypass: ", addr)
 		return
 	}
 
-	/*
+	resp := &http.Response{
-		resp := &http.Response{
+		ProtoMajor: 2,
-			ProtoMajor: 2,
+		ProtoMinor: 0,
-			ProtoMinor: 0,
+		Header:     http.Header{},
-			Header:     http.Header{},
+		Body:       ioutil.NopCloser(bytes.NewReader([]byte{})),
-			Body:       ioutil.NopCloser(bytes.NewReader([]byte{})),
+	}
-		}
 
-		if !h.authenticate(w, r, resp) {
+	if !h.authenticate(w, req, resp) {
-			return
+		return
-		}
+	}
-	*/
 
 	// delete the proxy related headers.
 	req.Header.Del("Proxy-Authorization")
@@ -248,17 +241,16 @@ func (h *http2Handler) basicProxyAuth(proxyAuth string) (username, password stri
 	return cs[:s], cs[s+1:], true
 }
 
-func (h *http2Handler) authenticate(conn net.Conn, req *http.Request, resp *http.Response) (ok bool) {
+func (h *http2Handler) authenticate(w http.ResponseWriter, r *http.Request, resp *http.Response) (ok bool) {
-	u, p, _ := h.basicProxyAuth(req.Header.Get("Proxy-Authorization"))
+	u, p, _ := h.basicProxyAuth(r.Header.Get("Proxy-Authorization"))
 	if h.authenticator == nil || h.authenticator.Authenticate(u, p) {
 		return true
 	}
 
-	pr := h.md.probeResist
+	pr := h.md.probeResistance
 	// probing resistance is enabled, and knocking host is mismatch.
-	if pr != nil && (pr.Knock == "" || !strings.EqualFold(req.URL.Hostname(), pr.Knock)) {
+	if pr != nil && (pr.Knock == "" || !strings.EqualFold(r.URL.Hostname(), pr.Knock)) {
 		resp.StatusCode = http.StatusServiceUnavailable // default status code
-
 		switch pr.Type {
 		case "code":
 			resp.StatusCode, _ = strconv.Atoi(pr.Value)
@@ -267,22 +259,30 @@ func (h *http2Handler) authenticate(conn net.Conn, req *http.Request, resp *http
 			if !strings.HasPrefix(url, "http") {
 				url = "http://" + url
 			}
-			if r, err := http.Get(url); err == nil {
+			r, err := http.Get(url)
-				resp = r
+			if err != nil {
-				defer r.Body.Close()
+				h.logger.Error(err)
+				break
 			}
+			resp = r
+			defer resp.Body.Close()
 		case "host":
 			cc, err := net.Dial("tcp", pr.Value)
-			if err == nil {
+			if err != nil {
-				defer cc.Close()
+				h.logger.Error(err)
-
+				break
-				req.Write(cc)
-				handler.Transport(conn, cc)
-				return
 			}
+			defer cc.Close()
+
+			if err := h.forwardRequest(w, r, cc); err != nil {
+				h.logger.Error(err)
+			}
+			return
 		case "file":
 			f, _ := os.Open(pr.Value)
 			if f != nil {
+				defer f.Close()
+
 				resp.StatusCode = http.StatusOK
 				if finfo, _ := f.Stat(); finfo != nil {
 					resp.ContentLength = finfo.Size()
@@ -296,7 +296,7 @@ func (h *http2Handler) authenticate(conn net.Conn, req *http.Request, resp *http
 	if resp.StatusCode == 0 {
 		resp.StatusCode = http.StatusProxyAuthRequired
 		resp.Header.Add("Proxy-Authenticate", "Basic realm=\"gost\"")
-		if strings.ToLower(req.Header.Get("Proxy-Connection")) == "keep-alive" {
+		if strings.ToLower(r.Header.Get("Proxy-Connection")) == "keep-alive" {
 			// XXX libcurl will keep sending auth request in same conn
 			// which we don't supported yet.
 			resp.Header.Add("Connection", "close")
@@ -318,6 +318,31 @@ func (h *http2Handler) authenticate(conn net.Conn, req *http.Request, resp *http
 		h.logger.Debug(string(dump))
 	}
 
-	resp.Write(conn)
+	h.writeResponse(w, resp)
+
 	return
 }
+func (h *http2Handler) forwardRequest(w http.ResponseWriter, r *http.Request, rw io.ReadWriter) (err error) {
+	if err = r.Write(rw); err != nil {
+		return
+	}
+
+	resp, err := http.ReadResponse(bufio.NewReader(rw), r)
+	if err != nil {
+		return
+	}
+	defer resp.Body.Close()
+
+	return h.writeResponse(w, resp)
+}
+
+func (h *http2Handler) writeResponse(w http.ResponseWriter, resp *http.Response) error {
+	for k, v := range resp.Header {
+		for _, vv := range v {
+			w.Header().Add(k, vv)
+		}
+	}
+	w.WriteHeader(resp.StatusCode)
+	_, err := io.Copy(flushWriter{w}, resp.Body)
+	return err
+}

pkg/handler/http2/metadata.go

@@ -7,16 +7,16 @@ import (
 )
 
 type metadata struct {
-	proxyAgent  string
+	proxyAgent      string
-	probeResist *probeResist
+	probeResistance *probeResistance
-	sni         bool
+	sni             bool
-	enableUDP   bool
+	enableUDP       bool
 }
 
 func (h *http2Handler) parseMetadata(md mdata.Metadata) error {
 	const (
 		proxyAgent     = "proxyAgent"
-		probeResistKey = "probeResist"
+		probeResistKey = "probeResistance"
 		knock          = "knock"
 		sni            = "sni"
 		enableUDP      = "udp"
@@ -26,7 +26,7 @@ func (h *http2Handler) parseMetadata(md mdata.Metadata) error {
 
 	if v := mdata.GetString(md, probeResistKey); v != "" {
 		if ss := strings.SplitN(v, ":", 2); len(ss) == 2 {
-			h.md.probeResist = &probeResist{
+			h.md.probeResistance = &probeResistance{
 				Type:  ss[0],
 				Value: ss[1],
 				Knock: mdata.GetString(md, knock),
@@ -39,7 +39,7 @@ func (h *http2Handler) parseMetadata(md mdata.Metadata) error {
 	return nil
 }
 
-type probeResist struct {
+type probeResistance struct {
 	Type  string
 	Value string
 	Knock string

pkg/internal/util/http2/conn.go

@@ -66,18 +66,22 @@ func (c *ClientConn) SetWriteDeadline(t time.Time) error {
 
 // a dummy HTTP2 server conn used by HTTP2 handler
 type ServerConn struct {
-	r      *http.Request
+	r          *http.Request
-	w      http.ResponseWriter
+	w          http.ResponseWriter
-	cancel context.CancelFunc
+	localAddr  net.Addr
+	remoteAddr net.Addr
+	cancel     context.CancelFunc
 }
 
-func NewServerConn(w http.ResponseWriter, r *http.Request) *ServerConn {
+func NewServerConn(w http.ResponseWriter, r *http.Request, localAddr, remoteAddr net.Addr) *ServerConn {
 	ctx, cancel := context.WithCancel(r.Context())
 
 	return &ServerConn{
-		r:      r.Clone(ctx),
+		r:          r.Clone(ctx),
-		w:      w,
+		w:          w,
-		cancel: cancel,
+		localAddr:  localAddr,
+		remoteAddr: remoteAddr,
+		cancel:     cancel,
 	}
 }
 
@@ -112,13 +116,11 @@ func (c *ServerConn) Close() error {
 }
 
 func (c *ServerConn) LocalAddr() net.Addr {
-	addr, _ := net.ResolveTCPAddr("tcp", c.r.Host)
+	return c.localAddr
-	return addr
 }
 
 func (c *ServerConn) RemoteAddr() net.Addr {
-	addr, _ := net.ResolveTCPAddr("tcp", c.r.RemoteAddr)
+	return c.remoteAddr
-	return addr
 }
 
 func (c *ServerConn) SetDeadline(t time.Time) error {

pkg/listener/http2/listener.go

@@ -106,7 +106,8 @@ func (l *http2Listener) Close() (err error) {
 }
 
 func (l *http2Listener) handleFunc(w http.ResponseWriter, r *http.Request) {
-	conn := http2_util.NewServerConn(w, r)
+	raddr, _ := net.ResolveTCPAddr("tcp", r.RemoteAddr)
+	conn := http2_util.NewServerConn(w, r, l.addr, raddr)
 	select {
 	case l.cqueue <- conn:
 	default: