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Casbin之ABAC

1.model.conf文件

[request_definition]
r = sub, obj, act

[policy_definition]
p = sub, obj, act

[matchers]
m = r.sub.Hour >= 9 && r.sub.Hour < 18 || r.sub.Name == r.obj.Owner

[policy_effect]
e = some(where (p.eft == allow))

2.Policy.conf文件

注意:虽然不需要Policy.conf文件,但是还是得在model.conf定义
[policy_definition]
p = sub, obj, act与
[policy_effect]
e = some(where (p.eft == allow))
这两个都不能少

3.main

package main

import (
	"fmt"
	"github.com/casbin/casbin/v2"
	"log"
)

type Object struct { 
   
	Name  string
	Owner string
}

type Subject struct { 
   
	Name string
	Hour int
}

func check(e *casbin.Enforcer, sub Subject, obj Object, act string) { 
   
	ok, _ := e.Enforce(sub, obj, act)
	if ok { 
   
		fmt.Printf("%s CAN %s %s at %d:00\n", sub.Name, act, obj.Name, sub.Hour)
	} else { 
   
		fmt.Printf("%s CANNOT %s %s at %d:00\n", sub.Name, act, obj.Name, sub.Hour)
	}
}

func main() { 
   
	e, err := casbin.NewEnforcer("./casbin/model.conf")
	if err != nil { 
   
		log.Fatalf("NewEnforecer failed:%v\n", err)
	}

	o := Object{ 
   "data", "dajun"}
	s1 := Subject{ 
   "dajun", 10}
	check(e, s1, o, "read")

	s2 := Subject{ 
   "lizi", 10}
	check(e, s2, o, "read")

	s3 := Subject{ 
   "dajun", 20}
	check(e, s3, o, "read")

	s4 := Subject{ 
   "lizi", 20}
	check(e, s4, o, "read")
}

4.输出及结构

5.讲解