mirror of
https://github.com/cubefs/cubefs.git
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115 lines
2.6 KiB
Go
115 lines
2.6 KiB
Go
// Copyright 2018 The ChubaoFS 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
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// implied. See the License for the specific language governing
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// permissions and limitations under the License.
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package objectnode
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// https://docs.aws.amazon.com/AmazonS3/latest/dev/access-policy-language-overview.html
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// https://docs.aws.amazon.com/AmazonS3/latest/dev/example-bucket-policies.html
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//https://docs.aws.amazon.com/zh_cn/AmazonS3/latest/dev/example-bucket-policies.html
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type Effect string
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type Principal map[string]StringSet
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type Resource string
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const (
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Allow Effect = "Allow"
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Deny = "Deny"
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)
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type Statement struct {
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Sid string `json:"Sid,omitempty"`
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Effect Effect `json:"Effect"`
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Principal Principal `json:"Principal"`
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Actions StringSet `json:"Action,omitempty"`
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NotActions StringSet `json:"NotAction,omitempty"`
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Resources StringSet `json:"Resource,omitempty"`
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NotResources StringSet `json:"NotResource,omitempty"`
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Condition Condition `json:"Condition,omitempty"`
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}
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func (s *Statement) Validate(bucket string) (bool, error) {
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return s.isValid(bucket)
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}
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func (s *Statement) isValid(bucket string) (bool, error) {
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//TODO:
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return true, nil
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}
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func (s Statement) IsAllowed(p *RequestParam) bool {
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checked := s.check(p)
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if s.Effect != Allow {
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return !checked
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}
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return checked
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}
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type CheckFuncs func(p *RequestParam) bool
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func (s Statement) check(p *RequestParam) bool {
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checkFuncs := []CheckFuncs{
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s.checkPrincipal,
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s.checkNotActions,
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s.checkActions,
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s.checkNotResources,
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s.checkResources,
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s.checkConditions,
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}
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for _, f := range checkFuncs {
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checked := f(p)
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if !checked {
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return false
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}
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}
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return true
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}
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func (s Statement) checkPrincipal(p *RequestParam) bool {
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if len(s.Principal) == 0 {
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return true
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}
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for _, principal := range s.Principal {
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if principal.ContainsWild(p.AccessKey()) {
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return true
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}
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}
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return false
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}
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func (s Statement) checkResources(p *RequestParam) bool {
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if s.Resources.Empty() {
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return true
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}
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if s.Resources.ContainsRegex(p.resource) {
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return true
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}
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return false
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}
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func (s Statement) checkNotResources(p *RequestParam) bool {
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if s.NotResources.Empty() {
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return true
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}
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if s.NotResources.ContainsRegex(p.resource) {
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return false
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}
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return true
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}
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