2021-03-25 07:31:29 -06:00
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/*
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Copyright 2021 Yarmo Mackenbach
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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2021-07-09 15:44:52 -06:00
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const jsEnv = require('browser-or-node')
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2021-04-22 07:14:21 -06:00
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/**
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* @module fetcher/xmpp
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*/
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/**
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* The request's timeout value in milliseconds
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* @constant {number} timeout
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*/
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2021-04-15 14:30:11 -06:00
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module.exports.timeout = 5000
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2021-04-26 04:28:43 -06:00
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if (jsEnv.isNode) {
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const jsdom = require('jsdom')
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const { client, xml } = require('@xmpp/client')
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const debug = require('@xmpp/debug')
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const validator = require('validator')
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let xmpp = null
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let iqCaller = null
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2021-04-26 04:28:43 -06:00
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const xmppStart = async (service, username, password) => {
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return new Promise((resolve, reject) => {
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const xmpp = client({
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service: service,
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username: username,
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password: password
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})
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if (process.env.NODE_ENV !== 'production') {
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debug(xmpp, true)
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}
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const { iqCaller } = xmpp
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xmpp.start()
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xmpp.on('online', (address) => {
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resolve({ xmpp: xmpp, iqCaller: iqCaller })
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})
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xmpp.on('error', (error) => {
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reject(error)
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})
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})
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}
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2021-04-26 04:28:43 -06:00
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/**
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* Execute a fetch request
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* @function
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* @async
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* @param {object} data - Data used in the request
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* @param {string} data.id - The identifier of the targeted account
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* @param {string} data.field - The vCard field to return (should be "note")
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* @param {object} opts - Options used to enable the request
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* @param {string} opts.claims.xmpp.service - The server hostname on which the library can log in
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* @param {string} opts.claims.xmpp.username - The username used to log in
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* @param {string} opts.claims.xmpp.password - The password used to log in
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* @returns {object}
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*/
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module.exports.fn = async (data, opts) => {
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try {
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validator.isFQDN(opts.claims.xmpp.service)
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validator.isAscii(opts.claims.xmpp.username)
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validator.isAscii(opts.claims.xmpp.password)
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} catch (err) {
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throw new Error(`XMPP fetcher was not set up properly (${err.message})`)
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}
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if (!xmpp || xmpp.status !== 'online') {
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const xmppStartRes = await xmppStart(
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opts.claims.xmpp.service,
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opts.claims.xmpp.username,
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opts.claims.xmpp.password
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)
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xmpp = xmppStartRes.xmpp
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iqCaller = xmppStartRes.iqCaller
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}
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const response = await iqCaller.request(
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xml('iq', { type: 'get', to: data.id }, xml('vCard', 'vcard-temp')),
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30 * 1000
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)
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const vcardRow = response.getChild('vCard', 'vcard-temp').toString()
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const dom = new jsdom.JSDOM(vcardRow)
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let timeoutHandle
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const timeoutPromise = new Promise((resolve, reject) => {
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timeoutHandle = setTimeout(
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() => reject(new Error('Request was timed out')),
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data.fetcherTimeout ? data.fetcherTimeout : module.exports.timeout
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)
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})
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const fetchPromise = new Promise((resolve, reject) => {
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try {
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let vcard
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switch (data.field.toLowerCase()) {
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case 'desc':
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case 'note':
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vcard = dom.window.document.querySelector('note text')
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if (!vcard) {
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vcard = dom.window.document.querySelector('DESC')
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}
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if (vcard) {
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vcard = vcard.textContent
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} else {
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throw new Error('No DESC or NOTE field found in vCard')
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}
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break
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default:
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vcard = dom.window.document.querySelector(data).textContent
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break
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}
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xmpp.stop()
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resolve(vcard)
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} catch (error) {
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reject(error)
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}
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})
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return Promise.race([fetchPromise, timeoutPromise]).then((result) => {
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clearTimeout(timeoutHandle)
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return result
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})
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}
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} else {
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module.exports.fn = null
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2021-03-25 08:37:30 -06:00
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}
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