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enforcer.go
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enforcer.go
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// Copyright 2023 The Casdoor Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package object
import (
"fmt"
"github.com/casbin/casbin/v2"
"github.com/casbin/casbin/v2/config"
"github.com/casdoor/casdoor/util"
xormadapter "github.com/casdoor/xorm-adapter/v3"
"github.com/xorm-io/core"
)
type Enforcer struct {
Owner string `xorm:"varchar(100) notnull pk" json:"owner"`
Name string `xorm:"varchar(100) notnull pk" json:"name"`
CreatedTime string `xorm:"varchar(100)" json:"createdTime"`
UpdatedTime string `xorm:"varchar(100) updated" json:"updatedTime"`
DisplayName string `xorm:"varchar(100)" json:"displayName"`
Description string `xorm:"varchar(100)" json:"description"`
Model string `xorm:"varchar(100)" json:"model"`
Adapter string `xorm:"varchar(100)" json:"adapter"`
ModelCfg map[string]string `xorm:"-" json:"modelCfg"`
*casbin.Enforcer
}
func GetEnforcerCount(owner, field, value string) (int64, error) {
session := GetSession(owner, -1, -1, field, value, "", "")
return session.Count(&Enforcer{})
}
func GetEnforcers(owner string) ([]*Enforcer, error) {
enforcers := []*Enforcer{}
err := ormer.Engine.Desc("created_time").Find(&enforcers, &Enforcer{Owner: owner})
if err != nil {
return enforcers, err
}
return enforcers, nil
}
func GetPaginationEnforcers(owner string, offset, limit int, field, value, sortField, sortOrder string) ([]*Enforcer, error) {
enforcers := []*Enforcer{}
session := GetSession(owner, offset, limit, field, value, sortField, sortOrder)
err := session.Find(&enforcers)
if err != nil {
return enforcers, err
}
return enforcers, nil
}
func getEnforcer(owner string, name string) (*Enforcer, error) {
if owner == "" || name == "" {
return nil, nil
}
enforcer := Enforcer{Owner: owner, Name: name}
existed, err := ormer.Engine.Get(&enforcer)
if err != nil {
return &enforcer, err
}
if existed {
return &enforcer, nil
} else {
return nil, nil
}
}
func GetEnforcer(id string) (*Enforcer, error) {
owner, name := util.GetOwnerAndNameFromId(id)
return getEnforcer(owner, name)
}
func UpdateEnforcer(id string, enforcer *Enforcer) (bool, error) {
owner, name := util.GetOwnerAndNameFromId(id)
if oldEnforcer, err := getEnforcer(owner, name); err != nil {
return false, err
} else if oldEnforcer == nil {
return false, nil
}
affected, err := ormer.Engine.ID(core.PK{owner, name}).AllCols().Update(enforcer)
if err != nil {
return false, err
}
return affected != 0, nil
}
func AddEnforcer(enforcer *Enforcer) (bool, error) {
affected, err := ormer.Engine.Insert(enforcer)
if err != nil {
return false, err
}
return affected != 0, nil
}
func DeleteEnforcer(enforcer *Enforcer) (bool, error) {
affected, err := ormer.Engine.ID(core.PK{enforcer.Owner, enforcer.Name}).Delete(&Enforcer{})
if err != nil {
return false, err
}
return affected != 0, nil
}
func (enforcer *Enforcer) GetId() string {
return fmt.Sprintf("%s/%s", enforcer.Owner, enforcer.Name)
}
func (enforcer *Enforcer) InitEnforcer() error {
if enforcer.Enforcer != nil {
return nil
}
if enforcer.Model == "" {
return fmt.Errorf("the model for enforcer: %s should not be empty", enforcer.GetId())
}
if enforcer.Adapter == "" {
return fmt.Errorf("the adapter for enforcer: %s should not be empty", enforcer.GetId())
}
m, err := GetModel(enforcer.Model)
if err != nil {
return err
} else if m == nil {
return fmt.Errorf("the model: %s for enforcer: %s is not found", enforcer.Model, enforcer.GetId())
}
a, err := GetAdapter(enforcer.Adapter)
if err != nil {
return err
} else if a == nil {
return fmt.Errorf("the adapter: %s for enforcer: %s is not found", enforcer.Adapter, enforcer.GetId())
}
err = m.initModel()
if err != nil {
return err
}
err = a.InitAdapter()
if err != nil {
return err
}
casbinEnforcer, err := casbin.NewEnforcer(m.Model, a.Adapter)
if err != nil {
return err
}
enforcer.Enforcer = casbinEnforcer
return nil
}
func GetInitializedEnforcer(enforcerId string) (*Enforcer, error) {
enforcer, err := GetEnforcer(enforcerId)
if err != nil {
return nil, err
} else if enforcer == nil {
return nil, fmt.Errorf("the enforcer: %s is not found", enforcerId)
}
err = enforcer.InitEnforcer()
if err != nil {
return nil, err
}
return enforcer, nil
}
func GetPolicies(id string) ([]*xormadapter.CasbinRule, error) {
enforcer, err := GetInitializedEnforcer(id)
if err != nil {
return nil, err
}
policies := util.MatrixToCasbinRules("p", enforcer.GetPolicy())
if enforcer.GetModel()["g"] != nil {
policies = append(policies, util.MatrixToCasbinRules("g", enforcer.GetGroupingPolicy())...)
}
return policies, nil
}
func UpdatePolicy(id string, oldPolicy, newPolicy []string) (bool, error) {
enforcer, err := GetInitializedEnforcer(id)
if err != nil {
return false, err
}
return enforcer.UpdatePolicy(oldPolicy, newPolicy)
}
func AddPolicy(id string, policy []string) (bool, error) {
enforcer, err := GetInitializedEnforcer(id)
if err != nil {
return false, err
}
return enforcer.AddPolicy(policy)
}
func RemovePolicy(id string, policy []string) (bool, error) {
enforcer, err := GetInitializedEnforcer(id)
if err != nil {
return false, err
}
return enforcer.RemovePolicy(policy)
}
func (enforcer *Enforcer) LoadModelCfg() error {
if enforcer.ModelCfg != nil {
return nil
}
model, err := GetModel(enforcer.Model)
if err != nil {
return err
} else if model == nil {
return fmt.Errorf("the model: %s for enforcer: %s is not found", enforcer.Model, enforcer.GetId())
}
cfg, err := config.NewConfigFromText(model.ModelText)
if err != nil {
return err
}
enforcer.ModelCfg = make(map[string]string)
enforcer.ModelCfg["p"] = cfg.String("policy_definition::p")
if cfg.String("role_definition::g") != "" {
enforcer.ModelCfg["g"] = cfg.String("role_definition::g")
}
return nil
}