Dragonfly2

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/*
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 *     Copyright 2020 The Dragonfly Authors
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 *
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 * Licensed under the Apache License, Version 2.0 (the "License");
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 * you may not use this file except in compliance with the License.
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 * You may obtain a copy of the License at
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 *
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 *      http://www.apache.org/licenses/LICENSE-2.0
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 *
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 * Unless required by applicable law or agreed to in writing, software
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 * distributed under the License is distributed on an "AS IS" BASIS,
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 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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 * See the License for the specific language governing permissions and
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 * limitations under the License.
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 */
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package middlewares
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import (
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	"fmt"
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	"net/http"
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	"github.com/casbin/casbin/v2"
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	"github.com/gin-gonic/gin"
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	logger "d7y.io/dragonfly/v2/internal/dflog"
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	"d7y.io/dragonfly/v2/manager/permission/rbac"
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)
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func RBAC(e *casbin.Enforcer) gin.HandlerFunc {
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	return func(c *gin.Context) {
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		action := rbac.HTTPMethodToAction(c.Request.Method)
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		permission, err := rbac.GetAPIGroupName(c.Request.URL.Path)
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		if err != nil {
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			logger.Errorf("get api group name error: %s", err)
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			c.JSON(http.StatusUnauthorized, gin.H{
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				"message": "permission validate error!",
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			})
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			c.Abort()
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			return
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		}
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		id, ok := c.Get("id")
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		if !ok {
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			c.JSON(http.StatusUnauthorized, gin.H{
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				"message": "permission validate error!",
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			})
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			c.Abort()
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			return
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		}
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		if ok, err := e.Enforce(fmt.Sprint(id.(float64)), permission, action); err != nil {
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			logger.Errorf("RBAC validate error: %s", err)
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			c.JSON(http.StatusUnauthorized, gin.H{
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				"message": "permission validate error!",
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			})
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			c.Abort()
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			return
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		} else if !ok {
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			c.JSON(http.StatusUnauthorized, gin.H{
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				"message": "permission deny",
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			})
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			c.Abort()
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			return
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		}
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		c.Next()
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	}
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}
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