updates

server/internal/auth/middleware.go

@@ -0,0 +1,39 @@
+package auth
+
+import (
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+)
+
+const ctxSessionKey = "km_session"
+
+func GetSessionFromContext(c *gin.Context) *Session {
+	v, _ := c.Get(ctxSessionKey)
+	sess, _ := v.(*Session)
+	return sess
+}
+
+func Middleware() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		if !authEnabled {
+			c.Next()
+			return
+		}
+
+		cookie, err := c.Request.Cookie(sessionCookieName)
+		if err != nil {
+			c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"error": "not authenticated"})
+			return
+		}
+
+		sess, err := GetSession(c.Request.Context(), cookie.Value)
+		if err != nil {
+			c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"error": "session expired"})
+			return
+		}
+
+		c.Set(ctxSessionKey, sess)
+		c.Next()
+	}
+}