二阶段差不多

internal/web/middleware/ban.go

@@ -0,0 +1,26 @@
+package middleware
+
+import (
+	"net/http"
+
+	"mail_go/internal/store"
+
+	"github.com/gin-gonic/gin"
+)
+
+// BanMiddleware checks if the client IP is currently banned.
+// If banned, it renders the "banned" template and aborts the request.
+func BanMiddleware(stores *store.Stores) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		ip := c.ClientIP()
+		banned, entry := stores.Bans.IsBanned(ip)
+		if banned {
+			c.HTML(http.StatusForbidden, "banned", gin.H{
+				"entry": entry,
+			})
+			c.Abort()
+			return
+		}
+		c.Next()
+	}
+}