forked from casdoor/casdoor
61 lines
1.5 KiB
Go
61 lines
1.5 KiB
Go
// Copyright 2024 The casbin Authors. All Rights Reserved.
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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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package rule
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import (
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"fmt"
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"net/http"
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"github.com/casdoor/casdoor/object"
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"github.com/casdoor/casdoor/util"
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)
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type CompoundRule struct{}
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func (r *CompoundRule) checkRule(expressions []*object.Expression, req *http.Request) (*RuleResult, error) {
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operators := util.NewStack()
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res := true
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for _, expression := range expressions {
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isHit := true
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result, err := CheckRules([]string{expression.Value}, req)
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if err != nil {
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return nil, err
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}
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if result == nil || result.Action == "" {
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isHit = false
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}
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switch expression.Operator {
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case "and", "begin":
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res = res && isHit
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case "or":
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operators.Push(res)
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res = isHit
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default:
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return nil, fmt.Errorf("unknown operator: %s", expression.Operator)
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}
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if operators.Size() > 0 {
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last, ok := operators.Pop()
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for ok {
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res = last.(bool) || res
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last, ok = operators.Pop()
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}
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}
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}
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if res {
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return &RuleResult{}, nil
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}
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return nil, nil
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}
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