add HTTP plugin

bypass/plugin.go

@@ -1,13 +1,17 @@
 package bypass
 
 import (
+	"bytes"
 	"context"
+	"encoding/json"
 	"io"
+	"net/http"
 
-	bypass_pkg "github.com/go-gost/core/bypass"
+	"github.com/go-gost/core/bypass"
 	"github.com/go-gost/core/logger"
 	"github.com/go-gost/plugin/bypass/proto"
 	auth_util "github.com/go-gost/x/internal/util/auth"
+	"github.com/go-gost/x/internal/util/plugin"
 	"google.golang.org/grpc"
 )
 
@@ -18,13 +22,24 @@ type grpcPluginBypass struct {
 }
 
 // NewGRPCPluginBypass creates a Bypass plugin based on gRPC.
-func NewGRPCPluginBypass(name string, conn grpc.ClientConnInterface) bypass_pkg.Bypass {
+func NewGRPCPluginBypass(name string, addr string, opts ...plugin.Option) bypass.Bypass {
+	var options plugin.Options
+	for _, opt := range opts {
+		opt(&options)
+	}
+
+	log := logger.Default().WithFields(map[string]any{
+		"kind":   "bypass",
+		"bypass": name,
+	})
+	conn, err := plugin.NewGRPCConn(addr, &options)
+	if err != nil {
+		log.Error(err)
+	}
+
 	p := &grpcPluginBypass{
 		conn: conn,
-		log: logger.Default().WithFields(map[string]any{
-			"kind":   "bypass",
-			"bypass": name,
-		}),
+		log:  log,
 	}
 	if conn != nil {
 		p.client = proto.NewBypassClient(conn)
@@ -55,3 +70,77 @@ func (p *grpcPluginBypass) Close() error {
 	}
 	return nil
 }
+
+type httpBypassRequest struct {
+	Addr   string `json:"addr"`
+	Client string `json:"client"`
+}
+
+type httpBypassResponse struct {
+	OK bool `json:"ok"`
+}
+
+type httpPluginBypass struct {
+	url    string
+	client *http.Client
+	header http.Header
+	log    logger.Logger
+}
+
+// NewHTTPPluginBypass creates an Bypass plugin based on HTTP.
+func NewHTTPPluginBypass(name string, url string, opts ...plugin.Option) bypass.Bypass {
+	var options plugin.Options
+	for _, opt := range opts {
+		opt(&options)
+	}
+
+	return &httpPluginBypass{
+		url:    url,
+		client: plugin.NewHTTPClient(&options),
+		header: options.Header,
+		log: logger.Default().WithFields(map[string]any{
+			"kind":   "bypass",
+			"bypass": name,
+		}),
+	}
+}
+
+func (p *httpPluginBypass) Contains(ctx context.Context, addr string) (ok bool) {
+	if p.client == nil {
+		return
+	}
+
+	rb := httpBypassRequest{
+		Addr:   addr,
+		Client: string(auth_util.IDFromContext(ctx)),
+	}
+	v, err := json.Marshal(&rb)
+	if err != nil {
+		return
+	}
+
+	req, err := http.NewRequest(http.MethodPost, p.url, bytes.NewReader(v))
+	if err != nil {
+		return
+	}
+
+	if p.header != nil {
+		req.Header = p.header.Clone()
+	}
+	req.Header.Set("Content-Type", "application/json")
+	resp, err := p.client.Do(req)
+	if err != nil {
+		return
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		return
+	}
+
+	res := httpBypassResponse{}
+	if err := json.NewDecoder(resp.Body).Decode(&res); err != nil {
+		return
+	}
+	return res.OK
+}