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import { Inject, Injectable, Optional } from '@nestjs/common'; |
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import { IStorageRbac } from '../interfaces/storage.rbac.interface'; |
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import { IDynamicStorageRbac } from '../interfaces/dynamic.storage.rbac.interface'; |
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import { ICacheRBAC } from '../interfaces/cache.rbac.interface'; |
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import { Ctr } from '../ctr/ctr'; |
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@Injectable() |
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export class StorageRbacService { |
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constructor( |
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@Inject('IDynamicStorageRbac') |
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private readonly rbac: IDynamicStorageRbac, |
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@Optional() @Inject('ICacheRBAC') |
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private readonly cache?: ICacheRBAC, |
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) { |
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} |
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async getStorage(): Promise<IStorageRbac> { |
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return await this.rbac.getRbac(); |
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} |
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async getPermissions(): Promise<object> { |
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return (await this.rbac.getRbac()).permissions; |
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} |
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async getGrants(): Promise<object> { |
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return (await this.rbac.getRbac()).grants; |
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} |
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async getRoles(): Promise<string[]> { |
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return (await this.rbac.getRbac()).roles; |
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} |
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async getGrant(role: string): Promise<string[]> { |
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const grant: object = await this.parseGrants(); |
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return grant[role] || []; |
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} |
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async getFilters(): Promise<object> { |
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const result: any = {}; |
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const filters = (await this.getStorage()).filters; |
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/* tslint:disable */ |
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for (const key in filters) { |
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let filter; |
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try { |
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filter = Ctr.ctr.get(filters[key]); |
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} catch (e) { |
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filter = await Ctr.ctr.create(filters[key]); |
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} |
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result[key] = filter; |
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} |
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return result; |
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} |
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private async parseGrants(): Promise<object> { |
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if (this.cache) { |
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const cache = await this.getFromCache(); |
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if (cache) { |
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return cache; |
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} |
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} |
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const {grants, permissions} = await this.rbac.getRbac(); |
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const result = {}; |
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Object.keys(grants).forEach((key) => { |
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const grant = grants[key]; |
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result[key] = [ |
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// remove duplicate |
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...new Set( |
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// get extended |
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grant.filter((value: string) => !value.startsWith('&')), |
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), |
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] |
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// remove not existed |
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.filter((value: string) => { |
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if (value.includes('@')) { |
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const spilt = value.split('@'); |
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if (!permissions[spilt[0]]) { |
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return false; |
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} |
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return permissions[spilt[0]].some((inAction) => inAction === spilt[1]); |
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} |
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if (permissions[value]) { |
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return permissions[value]; |
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} |
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}); |
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}); |
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const findExtendedGrants = {}; |
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Object.keys(grants).forEach((key) => { |
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const grant = grants[key]; |
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findExtendedGrants[key] = [ |
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// remove duplicate |
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...new Set( |
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// get extended |
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grant.filter((value: string) => { |
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if (value.startsWith('&')) { |
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const subGrant = value.substr(1); |
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if (grants[value.substr(1)] && subGrant !== key) { |
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return true; |
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} |
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} |
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return false; |
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}).map(value => value.substr(1)), |
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), |
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]; |
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}); |
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Object.keys(findExtendedGrants).forEach((key) => { |
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const grant = findExtendedGrants[key]; |
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grant.forEach((value) => { |
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result[key] = [...new Set([...result[key], ...result[value]])]; |
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}); |
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}); |
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Object.keys(result).forEach((key) => { |
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const grant = result[key]; |
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const per = []; |
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grant.forEach((value) => { |
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if (!value.includes('@')) { |
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per.push(...permissions[value].map((dd) => { |
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return `${value}@${dd}`; |
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})); |
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} |
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}); |
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result[key] = [...new Set([...result[key], ...per])]; |
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}); |
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if (this.cache) { |
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this.setIntoCache(result); |
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} |
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return result; |
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} |
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private async getFromCache(): Promise<object | null> { |
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return this.cache.get(); |
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} |
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private async setIntoCache(value: object): Promise<void> { |
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await this.cache.set(value); |
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} |
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} |
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sergey-telpuk /
nestjs-rbac
