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452 lines
13 KiB
452 lines
13 KiB
import vm from 'vm';
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import { Meteor } from 'meteor/meteor';
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import { HTTP } from 'meteor/http';
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import { Random } from 'meteor/random';
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import { Livechat } from 'meteor/rocketchat:livechat';
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import Fiber from 'fibers';
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import Future from 'fibers/future';
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import _ from 'underscore';
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import s from 'underscore.string';
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import moment from 'moment';
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import { logger } from '../logger';
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import { processWebhookMessage } from '../../../lib';
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import { API, APIClass, defaultRateLimiterOptions } from '../../../api/server';
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import * as Models from '../../../models';
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import { settings } from '../../../settings/server';
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const compiledScripts = {};
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function buildSandbox(store = {}) {
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const sandbox = {
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scriptTimeout(reject) {
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return setTimeout(() => reject('timed out'), 3000);
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},
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_,
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s,
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console,
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moment,
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Fiber,
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Promise,
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Livechat,
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Store: {
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set(key, val) {
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store[key] = val;
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return val;
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},
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get(key) {
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return store[key];
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},
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},
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HTTP(method, url, options) {
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try {
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return {
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result: HTTP.call(method, url, options),
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};
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} catch (error) {
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return {
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error,
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};
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}
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},
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};
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Object.keys(Models).filter((k) => !k.startsWith('_')).forEach((k) => { sandbox[k] = Models[k]; });
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return { store, sandbox };
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}
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function getIntegrationScript(integration) {
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const compiledScript = compiledScripts[integration._id];
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if (compiledScript && +compiledScript._updatedAt === +integration._updatedAt) {
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return compiledScript.script;
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}
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const script = integration.scriptCompiled;
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const { sandbox, store } = buildSandbox();
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try {
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logger.incoming.info('Will evaluate script of Trigger', integration.name);
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logger.incoming.debug(script);
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const vmScript = vm.createScript(script, 'script.js');
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vmScript.runInNewContext(sandbox);
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if (sandbox.Script) {
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compiledScripts[integration._id] = {
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script: new sandbox.Script(),
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store,
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_updatedAt: integration._updatedAt,
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};
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return compiledScripts[integration._id].script;
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}
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} catch ({ stack }) {
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logger.incoming.error('[Error evaluating Script in Trigger', integration.name, ':]');
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logger.incoming.error(script.replace(/^/gm, ' '));
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logger.incoming.error('[Stack:]');
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logger.incoming.error(stack.replace(/^/gm, ' '));
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throw API.v1.failure('error-evaluating-script');
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}
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if (!sandbox.Script) {
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logger.incoming.error('[Class "Script" not in Trigger', integration.name, ']');
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throw API.v1.failure('class-script-not-found');
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}
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}
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function createIntegration(options, user) {
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logger.incoming.info('Add integration', options.name);
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logger.incoming.debug(options);
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Meteor.runAsUser(user._id, function() {
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switch (options.event) {
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case 'newMessageOnChannel':
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if (options.data == null) {
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options.data = {};
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}
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if ((options.data.channel_name != null) && options.data.channel_name.indexOf('#') === -1) {
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options.data.channel_name = `#${ options.data.channel_name }`;
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}
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return Meteor.call('addOutgoingIntegration', {
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username: 'rocket.cat',
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urls: [options.target_url],
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name: options.name,
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channel: options.data.channel_name,
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triggerWords: options.data.trigger_words,
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});
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case 'newMessageToUser':
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if (options.data.username.indexOf('@') === -1) {
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options.data.username = `@${ options.data.username }`;
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}
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return Meteor.call('addOutgoingIntegration', {
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username: 'rocket.cat',
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urls: [options.target_url],
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name: options.name,
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channel: options.data.username,
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triggerWords: options.data.trigger_words,
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});
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}
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});
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return API.v1.success();
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}
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function removeIntegration(options, user) {
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logger.incoming.info('Remove integration');
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logger.incoming.debug(options);
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const integrationToRemove = Models.Integrations.findOne({
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urls: options.target_url,
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});
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Meteor.runAsUser(user._id, () => Meteor.call('deleteOutgoingIntegration', integrationToRemove._id));
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return API.v1.success();
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}
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function executeIntegrationRest() {
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logger.incoming.info('Post integration:', this.integration.name);
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logger.incoming.debug('@urlParams:', this.urlParams);
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logger.incoming.debug('@bodyParams:', this.bodyParams);
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if (this.integration.enabled !== true) {
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return {
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statusCode: 503,
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body: 'Service Unavailable',
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};
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}
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const defaultValues = {
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channel: this.integration.channel,
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alias: this.integration.alias,
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avatar: this.integration.avatar,
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emoji: this.integration.emoji,
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};
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if (this.integration.scriptEnabled && this.integration.scriptCompiled && this.integration.scriptCompiled.trim() !== '') {
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let script;
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try {
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script = getIntegrationScript(this.integration);
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} catch (e) {
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logger.incoming.warn(e);
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return API.v1.failure(e.message);
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}
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this.request.setEncoding('utf8');
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const content_raw = this.request.read();
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const request = {
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url: {
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hash: this.request._parsedUrl.hash,
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search: this.request._parsedUrl.search,
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query: this.queryParams,
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pathname: this.request._parsedUrl.pathname,
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path: this.request._parsedUrl.path,
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},
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url_raw: this.request.url,
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url_params: this.urlParams,
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content: this.bodyParams,
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content_raw,
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headers: this.request.headers,
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body: this.request.body,
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user: {
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_id: this.user._id,
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name: this.user.name,
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username: this.user.username,
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},
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};
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try {
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const { sandbox } = buildSandbox(compiledScripts[this.integration._id].store);
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sandbox.script = script;
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sandbox.request = request;
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const result = Future.fromPromise(vm.runInNewContext(`
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new Promise((resolve, reject) => {
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Fiber(() => {
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scriptTimeout(reject);
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try {
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resolve(script.process_incoming_request({ request: request }));
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} catch(e) {
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reject(e);
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}
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}).run();
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}).catch((error) => { throw new Error(error); });
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`, sandbox, {
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timeout: 3000,
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})).wait();
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if (!result) {
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logger.incoming.debug('[Process Incoming Request result of Trigger', this.integration.name, ':] No data');
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return API.v1.success();
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} if (result && result.error) {
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return API.v1.failure(result.error);
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}
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this.bodyParams = result && result.content;
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this.scriptResponse = result.response;
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if (result.user) {
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this.user = result.user;
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}
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logger.incoming.debug('[Process Incoming Request result of Trigger', this.integration.name, ':]');
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logger.incoming.debug('result', this.bodyParams);
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} catch ({ stack }) {
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logger.incoming.error('[Error running Script in Trigger', this.integration.name, ':]');
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logger.incoming.error(this.integration.scriptCompiled.replace(/^/gm, ' '));
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logger.incoming.error('[Stack:]');
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logger.incoming.error(stack.replace(/^/gm, ' '));
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return API.v1.failure('error-running-script');
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}
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}
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// TODO: Turn this into an option on the integrations - no body means a success
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// TODO: Temporary fix for https://github.com/RocketChat/Rocket.Chat/issues/7770 until the above is implemented
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if (!this.bodyParams || (_.isEmpty(this.bodyParams) && !this.integration.scriptEnabled)) {
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// return RocketChat.API.v1.failure('body-empty');
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return API.v1.success();
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}
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this.bodyParams.bot = { i: this.integration._id };
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try {
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const message = processWebhookMessage(this.bodyParams, this.user, defaultValues, this.integration);
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if (_.isEmpty(message)) {
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return API.v1.failure('unknown-error');
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}
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if (this.scriptResponse) {
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logger.incoming.debug('response', this.scriptResponse);
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}
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return API.v1.success(this.scriptResponse);
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} catch ({ error, message }) {
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return API.v1.failure(error || message);
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}
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}
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function addIntegrationRest() {
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return createIntegration(this.bodyParams, this.user);
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}
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function removeIntegrationRest() {
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return removeIntegration(this.bodyParams, this.user);
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}
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function integrationSampleRest() {
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logger.incoming.info('Sample Integration');
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return {
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statusCode: 200,
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body: [
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{
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token: Random.id(24),
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channel_id: Random.id(),
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channel_name: 'general',
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timestamp: new Date(),
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user_id: Random.id(),
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user_name: 'rocket.cat',
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text: 'Sample text 1',
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trigger_word: 'Sample',
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}, {
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token: Random.id(24),
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channel_id: Random.id(),
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channel_name: 'general',
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timestamp: new Date(),
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user_id: Random.id(),
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user_name: 'rocket.cat',
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text: 'Sample text 2',
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trigger_word: 'Sample',
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}, {
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token: Random.id(24),
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channel_id: Random.id(),
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channel_name: 'general',
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timestamp: new Date(),
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user_id: Random.id(),
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user_name: 'rocket.cat',
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text: 'Sample text 3',
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trigger_word: 'Sample',
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},
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],
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};
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}
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function integrationInfoRest() {
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logger.incoming.info('Info integration');
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return {
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statusCode: 200,
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body: {
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success: true,
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},
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};
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}
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class WebHookAPI extends APIClass {
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/* Webhooks are not versioned, so we must not validate we know a version before adding a rate limiter */
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shouldAddRateLimitToRoute(options) {
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const { rateLimiterOptions } = options;
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return (typeof rateLimiterOptions === 'object' || rateLimiterOptions === undefined) && !process.env.TEST_MODE && Boolean(defaultRateLimiterOptions.numRequestsAllowed && defaultRateLimiterOptions.intervalTimeInMS);
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}
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shouldVerifyRateLimit(/* route */) {
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return settings.get('API_Enable_Rate_Limiter') === true
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&& (process.env.NODE_ENV !== 'development' || settings.get('API_Enable_Rate_Limiter_Dev') === true);
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}
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/*
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There is only one generic route propagated to Restivus which has URL-path-parameters for the integration and the token.
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Since the rate-limiter operates on absolute routes, we need to add a limiter to the absolute url before we can validate it
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*/
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enforceRateLimit(objectForRateLimitMatch, request, response, userId) {
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const { method, url } = request;
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const route = url.replace(`/${ this.apiPath }`, '');
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const nameRoute = this.getFullRouteName(route, [method.toLowerCase()]);
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// We'll be creating rate limiters on demand (when validating for the first time).
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// This is possible since *all* integration hooks should be rate limited the same way.
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// This way, we'll not have to add new limiters as new integrations are added
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if (!this.getRateLimiter(nameRoute)) {
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this.addRateLimiterRuleForRoutes({
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routes: [route],
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rateLimiterOptions: defaultRateLimiterOptions,
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endpoints: {
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post: executeIntegrationRest,
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get: executeIntegrationRest,
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},
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});
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}
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const integrationForRateLimitMatch = objectForRateLimitMatch;
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integrationForRateLimitMatch.route = nameRoute;
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super.enforceRateLimit(integrationForRateLimitMatch, request, response, userId);
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}
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}
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const Api = new WebHookAPI({
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enableCors: true,
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apiPath: 'hooks/',
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auth: {
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user() {
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const payloadKeys = Object.keys(this.bodyParams);
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const payloadIsWrapped = (this.bodyParams && this.bodyParams.payload) && payloadKeys.length === 1;
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if (payloadIsWrapped && this.request.headers['content-type'] === 'application/x-www-form-urlencoded') {
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try {
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this.bodyParams = JSON.parse(this.bodyParams.payload);
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} catch ({ message }) {
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return {
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error: {
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statusCode: 400,
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body: {
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success: false,
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error: message,
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},
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},
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};
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}
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}
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this.integration = Models.Integrations.findOne({
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_id: this.request.params.integrationId,
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token: decodeURIComponent(this.request.params.token),
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});
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if (!this.integration) {
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logger.incoming.info('Invalid integration id', this.request.params.integrationId, 'or token', this.request.params.token);
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return {
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error: {
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statusCode: 404,
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body: {
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success: false,
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error: 'Invalid integration id or token provided.',
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},
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},
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};
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}
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const user = Models.Users.findOne({
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_id: this.integration.userId,
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});
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return { user };
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},
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},
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});
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Api.addRoute(':integrationId/:userId/:token', { authRequired: true }, {
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post: executeIntegrationRest,
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get: executeIntegrationRest,
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});
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Api.addRoute(':integrationId/:token', { authRequired: true }, {
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post: executeIntegrationRest,
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get: executeIntegrationRest,
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});
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Api.addRoute('sample/:integrationId/:userId/:token', { authRequired: true }, {
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get: integrationSampleRest,
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});
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Api.addRoute('sample/:integrationId/:token', { authRequired: true }, {
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get: integrationSampleRest,
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});
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Api.addRoute('info/:integrationId/:userId/:token', { authRequired: true }, {
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get: integrationInfoRest,
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});
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Api.addRoute('info/:integrationId/:token', { authRequired: true }, {
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get: integrationInfoRest,
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});
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Api.addRoute('add/:integrationId/:userId/:token', { authRequired: true }, {
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post: addIntegrationRest,
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});
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Api.addRoute('add/:integrationId/:token', { authRequired: true }, {
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post: addIntegrationRest,
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});
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Api.addRoute('remove/:integrationId/:userId/:token', { authRequired: true }, {
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post: removeIntegrationRest,
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});
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Api.addRoute('remove/:integrationId/:token', { authRequired: true }, {
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post: removeIntegrationRest,
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});
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