mirror of https://github.com/astaxie/beego.git
131 lines
2.9 KiB
Go
131 lines
2.9 KiB
Go
// Copyright 2017 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 model
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import (
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"strconv"
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"strings"
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"github.com/casbin/casbin/config"
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"github.com/casbin/casbin/log"
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"github.com/casbin/casbin/util"
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)
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// Model represents the whole access control model.
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type Model map[string]AssertionMap
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// AssertionMap is the collection of assertions, can be "r", "p", "g", "e", "m".
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type AssertionMap map[string]*Assertion
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var sectionNameMap = map[string]string{
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"r": "request_definition",
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"p": "policy_definition",
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"g": "role_definition",
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"e": "policy_effect",
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"m": "matchers",
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}
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func loadAssertion(model Model, cfg config.ConfigInterface, sec string, key string) bool {
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value := cfg.String(sectionNameMap[sec] + "::" + key)
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return model.AddDef(sec, key, value)
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}
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// AddDef adds an assertion to the model.
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func (model Model) AddDef(sec string, key string, value string) bool {
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ast := Assertion{}
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ast.Key = key
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ast.Value = value
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if ast.Value == "" {
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return false
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}
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if sec == "r" || sec == "p" {
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ast.Tokens = strings.Split(ast.Value, ", ")
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for i := range ast.Tokens {
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ast.Tokens[i] = key + "_" + ast.Tokens[i]
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}
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} else {
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ast.Value = util.RemoveComments(util.EscapeAssertion(ast.Value))
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}
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_, ok := model[sec]
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if !ok {
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model[sec] = make(AssertionMap)
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}
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model[sec][key] = &ast
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return true
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}
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func getKeySuffix(i int) string {
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if i == 1 {
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return ""
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}
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return strconv.Itoa(i)
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}
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func loadSection(model Model, cfg config.ConfigInterface, sec string) {
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i := 1
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for {
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if !loadAssertion(model, cfg, sec, sec+getKeySuffix(i)) {
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break
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} else {
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i++
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}
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}
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}
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// LoadModel loads the model from model CONF file.
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func (model Model) LoadModel(path string) {
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cfg, err := config.NewConfig(path)
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if err != nil {
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panic(err)
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}
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loadSection(model, cfg, "r")
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loadSection(model, cfg, "p")
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loadSection(model, cfg, "e")
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loadSection(model, cfg, "m")
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loadSection(model, cfg, "g")
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}
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// LoadModelFromText loads the model from the text.
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func (model Model) LoadModelFromText(text string) {
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cfg, err := config.NewConfigFromText(text)
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if err != nil {
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panic(err)
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}
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loadSection(model, cfg, "r")
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loadSection(model, cfg, "p")
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loadSection(model, cfg, "e")
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loadSection(model, cfg, "m")
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loadSection(model, cfg, "g")
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}
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// PrintModel prints the model to the log.
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func (model Model) PrintModel() {
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log.LogPrint("Model:")
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for k, v := range model {
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for i, j := range v {
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log.LogPrintf("%s.%s: %s", k, i, j.Value)
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}
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}
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}
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