Add call protocol, Rmux. Update AmneziaWG. Fixes and improvements

transport/call/common/http.go

@@ -0,0 +1,87 @@
+package common
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net"
+	"net/http"
+	"os"
+	"strings"
+
+	M "github.com/sagernet/sing/common/metadata"
+	N "github.com/sagernet/sing/common/network"
+)
+
+const UserAgent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/148.0.0.0 Safari/537.36"
+
+func LoadCookies(path string) (string, error) {
+	data, err := os.ReadFile(path)
+	if err != nil {
+		return "", fmt.Errorf("cannot read cookies: %w", err)
+	}
+	var cookies []struct {
+		Name  string `json:"name"`
+		Value string `json:"value"`
+	}
+	if err := json.Unmarshal(data, &cookies); err != nil {
+		return "", fmt.Errorf("cannot parse cookies: %w", err)
+	}
+	parts := make([]string, len(cookies))
+	for i, c := range cookies {
+		parts[i] = c.Name + "=" + c.Value
+	}
+	return strings.Join(parts, "; "), nil
+}
+
+func HttpClient(dialer N.Dialer) *http.Client {
+	return &http.Client{
+		Transport: &http.Transport{
+			DialContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
+				return dialer.DialContext(ctx, network, M.ParseSocksaddr(addr))
+			},
+		},
+	}
+}
+
+func HttpGet(dialer N.Dialer, endpoint string) ([]byte, error) {
+	req, _ := http.NewRequest("GET", endpoint, nil)
+	req.Header.Set("User-Agent", UserAgent)
+	resp, err := HttpClient(dialer).Do(req)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+	return io.ReadAll(resp.Body)
+}
+
+func CookieValue(cookieHeader, name string) string {
+	for _, part := range strings.Split(cookieHeader, ";") {
+		part = strings.TrimSpace(part)
+		eq := strings.IndexByte(part, '=')
+		if eq != -1 && part[:eq] == name {
+			return part[eq+1:]
+		}
+	}
+	return ""
+}
+
+func FilterCookies(cookieHeader string, allow []string) string {
+	allowed := make(map[string]struct{}, len(allow))
+	for _, n := range allow {
+		allowed[n] = struct{}{}
+	}
+	var out []string
+	for _, part := range strings.Split(cookieHeader, ";") {
+		trimmed := strings.TrimSpace(part)
+		eq := strings.IndexByte(trimmed, '=')
+		if eq == -1 {
+			continue
+		}
+		if _, ok := allowed[trimmed[:eq]]; ok {
+			out = append(out, trimmed)
+		}
+	}
+	return strings.Join(out, "; ")
+}