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import { CanActivate, ExecutionContext, ForbiddenException, Injectable } from '@nestjs/common'; |
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import { Reflector } from '@nestjs/core'; |
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import { RbacService } from '../services/rbac.service'; |
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import { IRole } from '../role/interfaces/role.interface'; |
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import { ParamsFilter } from '../params-filter/params.filter'; |
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import { ASYNC_RBAC_REQUEST_FILTER, RBAC_REQUEST_FILTER } from '../constans'; |
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import { |
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RBAcAnyAsyncPermissions, |
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RBAcAnyPermissions, |
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RBAcAsyncPermissions, |
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RBAcPermissions |
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} from '../decorators/rbac.permissions.decorator'; |
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@Injectable() |
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export class RBAcGuard implements CanActivate { |
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constructor( |
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private readonly reflector: Reflector, |
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private readonly rbacService: RbacService, |
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) { |
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} |
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async canActivate( |
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context: ExecutionContext, |
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): Promise<boolean> { |
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const request = context.switchToHttp().getRequest(); |
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const user: IRole = request.user; |
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if (!user) { |
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throw new ForbiddenException('Getting user was failed.'); |
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} |
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{ |
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const permAsync = this.rbacAsync(context); |
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if (permAsync.length > 0) { |
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const filter = new ParamsFilter(); |
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filter.setParam(ASYNC_RBAC_REQUEST_FILTER, {...request}); |
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return (await this.rbacService.getRole(user.role, filter)).canAsync(...permAsync); |
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} |
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} |
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{ |
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const perm = this.rbac(context); |
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if (perm.length > 0) { |
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const filter = new ParamsFilter(); |
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filter.setParam(RBAC_REQUEST_FILTER, {...request}); |
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return (await this.rbacService.getRole(user.role, filter)).can(...perm); |
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} |
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} |
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{ |
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const permAny = this.rbacAny(context); |
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if (permAny.length > 0) { |
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const filter = new ParamsFilter(); |
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filter.setParam(RBAC_REQUEST_FILTER, {...request}); |
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return (await this.rbacService.getRole(user.role, filter)).any(...permAny); |
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} |
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} |
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{ |
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const permAnyAsync = this.rbacAnyAsync(context); |
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if (permAnyAsync.length > 0) { |
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const filter = new ParamsFilter(); |
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filter.setParam(ASYNC_RBAC_REQUEST_FILTER, {...request}); |
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return await (await this.rbacService.getRole(user.role, filter)).anyAsync(...permAnyAsync); |
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} |
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} |
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throw new ForbiddenException(); |
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} |
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private rbacAsync(context: ExecutionContext): string[] { |
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const permissions = this.reflector.get<string[]>(RBAcAsyncPermissions.name, context.getHandler()) |
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|| this.reflector.get<string[]>(RBAcAsyncPermissions.name, context.getClass()); |
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if (permissions !== undefined) { |
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return permissions; |
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} |
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return []; |
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} |
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private rbac(context: ExecutionContext): string[] { |
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const permissions = this.reflector.get<string[]>(RBAcPermissions.name, context.getHandler()) |
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|| this.reflector.get<string[]>(RBAcPermissions.name, context.getClass()); |
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if (permissions !== undefined) { |
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return permissions; |
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} |
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return []; |
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} |
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private rbacAny(context: ExecutionContext): string[][] { |
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const permissions = this.reflector.get<string[][]>(RBAcAnyPermissions.name, context.getHandler()) |
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|| this.reflector.get<string[][]>(RBAcAnyPermissions.name, context.getClass()); |
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if (permissions !== undefined) { |
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return permissions; |
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} |
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return []; |
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} |
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private rbacAnyAsync(context: ExecutionContext): string[][] { |
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const permissions = this.reflector.get<string[][]>(RBAcAnyAsyncPermissions.name, context.getHandler()) |
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|| this.reflector.get<string[][]>(RBAcAnyAsyncPermissions.name, context.getClass()); |
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if (permissions !== undefined) { |
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return permissions; |
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} |
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return []; |
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} |
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} |
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sergey-telpuk /
nestjs-rbac
