const { Model } = require('flitter-orm') // TODO - remove specific :create checks; auto-grant permissions on create class PolicyModel extends Model { static get services() { return [...super.services, 'models', 'canon'] } static get schema() { return { entity_type: String, // user | group entity_id: String, access_type: String, // allow | deny target_type: { type: String, default: 'application' }, // application | api_scope target_id: String, active: { type: Boolean, default: true }, } } static async check_allow(entity_id, target_id) { const policies = await this.find({ entity_id, target_id, access_type: 'allow', active: true, }) return policies.length > 0 } static async check_deny(entity_id, target_id) { const policies = await this.find({ entity_id, target_id, access_type: 'deny', active: true, }) return policies.length === 0 } static async check_entity_access(entity_id, target_id) { return (await this.check_allow(entity_id, target_id)) && !(await this.check_deny(entity_id, target_id)) } static async check_user_denied(user, target_id) { const groups = await user.groups() const group_ids = groups.map(x => x.id) const user_denials = await this.find({ entity_id: user.id, target_id, access_type: 'deny', active: true, }) const group_denials = await this.find({ entity_id: { $in: group_ids }, target_id, access_type: 'deny', active: true, }) return user_denials.length > 0 || group_denials.length > 0 } static async check_user_access(user, target_id) { const groups = await user.groups() const group_ids = groups.map(x => x.id) const user_approvals = await this.find({ entity_id: user.id, target_id, access_type: 'allow', active: true, }) const user_denials = await this.find({ entity_id: user.id, target_id, access_type: 'deny', active: true, }) const group_approvals = await this.find({ entity_id: { $in: group_ids }, target_id, access_type: 'allow', active: true, }) const group_denials = await this.find({ entity_id: { $in: group_ids }, target_id, access_type: 'deny', active: true, }) // IF user has explicit denial, deny if ( user_denials.length > 0 ) return false // ELSE IF user has explicit approval, approve if ( user_approvals.length > 0 ) return true // ELSE IF group has denial, deny if ( group_denials.length > 0 ) return false // ELSE IF group has approval, approve if ( group_approvals.length > 0 ) return true // ELSE deny return false } async to_api() { let entity_display = '' if ( this.entity_type === 'user' ) { const User = this.models.get('auth:User') const user = await User.findById(this.entity_id) entity_display = `User: ${user.last_name}, ${user.first_name} (${user.uid})` } else if ( this.entity_type === 'group' ) { const Group = this.models.get('auth:Group') const group = await Group.findById(this.entity_id) entity_display = `Group: ${group.name} (${group.user_ids.length} users)` } let target_display = '' if ( this.target_type === 'application' ) { const Application = this.models.get('Application') const app = await Application.findById(this.target_id) target_display = `Application: ${app.name}` } else if ( this.target_type === 'api_scope' ) { target_display = `API Scope: ${this.target_id}` } return { id: this.id, entity_display, entity_type: this.entity_type, entity_id: this.entity_id, access_type: this.access_type, target_display, target_type: this.target_type, target_id: this.target_id, } } } module.exports = exports = PolicyModel