feat: implement VPN platform management and real protocol services

backend/main.go

@@ -0,0 +1,108 @@
+// VPN 管理平台 —— 单二进制交付（前端静态资源内嵌） // Logan.Li
+package main
+
+import (
+	"embed"
+	"io/fs"
+	"log"
+	"net/http"
+	"os"
+	"strings"
+	"time"
+
+	"github.com/gin-gonic/gin"
+
+	"vpn-platform/backend/internal/api"
+	"vpn-platform/backend/internal/core"
+	"vpn-platform/backend/internal/monitor"
+	"vpn-platform/backend/internal/service"
+	"vpn-platform/backend/internal/service/custom"
+	"vpn-platform/backend/internal/service/frp"
+	"vpn-platform/backend/internal/service/ipsec"
+	"vpn-platform/backend/internal/service/l2tp"
+	"vpn-platform/backend/internal/service/openvpn"
+	"vpn-platform/backend/internal/service/wireguard"
+	"vpn-platform/backend/internal/store"
+)
+
+//go:embed all:dist
+var webFS embed.FS
+
+func main() {
+	gin.SetMode(gin.ReleaseMode)
+
+	// 数据目录：默认 ./data，可用 VPN_DATA_DIR 覆盖
+	dataDir := service.BaseDir()
+	if err := store.Init(dataDir); err != nil {
+		log.Fatalf("初始化存储失败: %v", err)
+	}
+	// OpenVPN invokes this same, already-installed binary from its
+	// auth-user-pass-verify hook. Keep it before HTTP startup so the hook has a
+	// short-lived process and a meaningful exit status.
+	if len(os.Args) > 1 && os.Args[1] == "openvpn-auth" {
+		if err := openvpn.RunAuthHelper(os.Args[2:]); err != nil {
+			log.Printf("OpenVPN 用户认证失败: %v", err)
+			os.Exit(1)
+		}
+		return
+	}
+
+	// 注册内置协议
+	mgr := core.NewManager()
+	mgr.Register(wireguard.New())
+	mgr.Register(ipsec.New())
+	mgr.Register(l2tp.New())
+	mgr.Register(frp.New())
+	mgr.Register(openvpn.New())
+	// 加载数据库中的自定义协议插件
+	custom.LoadAll(mgr)
+
+	r := gin.New()
+	r.Use(gin.Recovery())
+
+	srv := api.NewServer(mgr)
+	srv.RegisterRoutes(r)
+
+	// 内嵌前端（SPA 回退到 index.html）
+	dist, err := fs.Sub(webFS, "dist")
+	if err != nil {
+		log.Fatalf("内嵌资源损坏: %v", err)
+	}
+	fileServer := http.FileServer(http.FS(dist))
+	r.NoRoute(func(c *gin.Context) {
+		path := strings.TrimPrefix(c.Request.URL.Path, "/")
+		if path == "" {
+			path = "index.html"
+		}
+		if f, err := dist.Open(path); err == nil {
+			f.Close()
+			fileServer.ServeHTTP(c.Writer, c.Request)
+			return
+		}
+		// SPA fallback
+		c.Request.URL.Path = "/"
+		fileServer.ServeHTTP(c.Writer, c.Request)
+	})
+
+	// 状态采集 + 自启恢复
+	monitor.Start(mgr, 15*time.Second)
+	monitor.AutoStartAll(mgr)
+
+	addr := os.Getenv("VPN_LISTEN_ADDR")
+	if addr == "" {
+		addr = ":8080"
+	}
+	log.Printf("VPN 管理平台已启动: http://localhost%s  (默认账号 admin / admin123)", addr)
+	log.Printf("协议依赖检测:")
+	for _, p := range mgr.List() {
+		ok, dep := p.Available()
+		mark := "✓"
+		if !ok {
+			mark = "✗"
+		}
+		log.Printf("  [%s] %-10s %s", mark, p.Name(), dep)
+	}
+	if err := r.Run(addr); err != nil {
+		log.Fatal(err)
+	}
+}