@dazejs/framework

Version:
Daze.js - A powerful web framework for Node.js
78 lines • 3.2 kB
JavaScript
"use strict";
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
    var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
    if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
    else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
    return c > 3 && r && Object.defineProperty(target, key, r), r;
};
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.VerifyCsrfToken = void 0;
const minimatch_1 = __importDefault(require("minimatch"));
const response_1 = require("../../../http/response");
const decorators_1 = require("../../../decorators");
const helpers_1 = require("../../../helpers");
const defaultExcludedMethods = ['HEAD', 'GET', 'OPTIONS'];
const defaultInvalidTokenMessage = 'Invalid CSRF token';
let VerifyCsrfToken = class VerifyCsrfToken {
    get except() {
        return [];
    }
    get excludedMethods() {
        return defaultExcludedMethods;
    }
    get invalidTokenMessage() {
        return defaultInvalidTokenMessage;
    }
    isReadVerb(method) {
        if (!method)
            return false;
        const excludedMethods = Array.isArray(this.excludedMethods)
            ? this.excludedMethods
            : defaultExcludedMethods;
        return !!~excludedMethods.indexOf(method.toUpperCase());
    }
    inExcept(requestPath) {
        for (const except of this.except) {
            if ((0, minimatch_1.default)(requestPath, except))
                return true;
        }
        return false;
    }
    tokenValidity(request) {
        const bodyToken = (request.body && typeof request.body._token === 'string')
            ? request.body._token : false;
        const token = bodyToken
            || request.getHeader('csrf-token')
            || request.getHeader('xsrf-token')
            || request.getHeader('x-csrf-token')
            || request.getHeader('x-xsrf-token');
        if (!token) {
            return false;
        }
        if (!(0, helpers_1.app)().get('csrf').verify(request.session().get('secret'), token)) {
            return false;
        }
        return true;
    }
    resolve(request, next) {
        const session = request.session();
        if (!session.get('secret')) {
            session.set('secret', (0, helpers_1.app)().get('csrf').secretSync());
        }
        request._csrf = (0, helpers_1.app)().get('csrf').create(session.get('secret'));
        if (this.isReadVerb(request.getMethod())
            || this.inExcept(request.getPath())
            || this.tokenValidity(request)) {
            return next();
        }
        return new response_1.Response(this.invalidTokenMessage, 403);
    }
};
VerifyCsrfToken = __decorate([
    (0, decorators_1.Middleware)()
], VerifyCsrfToken);
exports.VerifyCsrfToken = VerifyCsrfToken;
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