1 | import fs from 'fs'
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2 | import path from 'path'
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3 | import makeDeviceId from './FacebookDeviceId'
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4 | import HttpApi from './http/HttpApi'
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5 | import MqttApi from './mqtt/MqttApi'
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6 | import Session from './types/Session'
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7 | import Thread, { parseThread } from './types/Thread'
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8 | import User, { parseUser } from './types/User'
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9 | import debug from 'debug'
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10 | import { Readable } from 'stream'
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11 | import { PublishPacket } from './mqtt/messages/Publish'
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12 | import Message, { MessageOptions, parseThreadMessage, parseDeltaMessage } from './types/Message'
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13 | import parseDeltaEvent from './types/events/parseDeltaEvent'
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14 | import EventEmitter from 'events'
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15 | import { AttachmentNotFoundError, AttachmentURLMissingError } from './types/Errors'
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16 | import StrictEventEmitter from 'strict-event-emitter-types'
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17 | import ClientEvents from './ClientEvents'
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18 | import * as Payloads from './mqtt/payloads'
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19 | import DeviceId from './types/DeviceId'
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20 |
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21 | const debugLog = debug('fblib')
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22 |
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23 | export interface ClientOptions {
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24 | selfListen?: boolean
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25 | session?: Session
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26 | deviceId?: DeviceId
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27 | }
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28 |
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29 | type ClientEmitter = StrictEventEmitter<EventEmitter, ClientEvents>
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30 |
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31 |
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32 |
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33 |
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34 |
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35 | export default class Client extends (EventEmitter as { new(): ClientEmitter }) {
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36 | private mqttApi: MqttApi
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37 | private httpApi: HttpApi
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38 | private readonly session: Session | null
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39 | private seqId = ''
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40 | loggedIn: boolean = false
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41 | private options: ClientOptions
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42 |
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43 | constructor (options: ClientOptions = { selfListen: false, session: null }) {
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44 | super()
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45 |
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46 | this.options = options
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47 |
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48 | this.mqttApi = new MqttApi()
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49 | this.httpApi = new HttpApi()
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50 |
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51 | let session = options.session
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52 | if (!session) {
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53 | session = { tokens: null, deviceId: null }
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54 | }
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55 |
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56 | if (options.deviceId) {
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57 | session.deviceId = options.deviceId
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58 | }
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59 |
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60 | if (!session.deviceId) {
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61 | const deviceId = makeDeviceId()
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62 | session.deviceId = deviceId
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63 | this.httpApi.deviceId = deviceId.deviceId
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64 | }
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65 |
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66 | if (session.tokens) {
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67 | this.httpApi.token = session.tokens.access_token
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68 | }
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69 |
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70 | this.session = session
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71 | }
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72 |
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73 | async login (email: string, password: string) {
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74 |
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75 | if (this.loggedIn) throw new Error('Already logged in!')
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76 | if (
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77 | !email || typeof email !== 'string' || !email.trim() ||
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78 | !password || typeof password !== 'string' || !password.trim()
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79 | ) throw new Error('Wrong username/password!')
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80 | await this.doLogin(email, password)
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81 | this.loggedIn = true
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82 | }
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83 |
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84 | private doLogin (login: string, password: string) {
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85 | return new Promise(async (resolve, reject) => {
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86 | if (!this.session.tokens) {
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87 | let tokens
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88 | try {
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89 | tokens = await this.httpApi.auth(login, password)
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90 | } catch (err) {
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91 | return reject(err)
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92 | }
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93 | this.httpApi.token = tokens.access_token
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94 | this.session.tokens = tokens
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95 | }
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96 |
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97 | this.mqttApi.on('publish', async (publish: PublishPacket) => {
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98 | debugLog(publish.topic)
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99 | if (publish.topic === '/send_message_response') {
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100 | const response = JSON.parse(publish.data.toString('utf8'))
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101 | debugLog(response)
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102 | this.mqttApi.emit('sentMessage:' + response.msgid, response)
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103 | }
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104 | if (publish.topic === '/t_ms') this.handleMS(publish.data.toString('utf8'))
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105 | })
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106 |
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107 | this.mqttApi.on('connected', async () => {
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108 | let viewer
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109 | try {
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110 | ({ viewer } = await this.httpApi.querySeqId())
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111 | } catch (err) {
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112 | return reject(err)
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113 | }
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114 | const seqId = viewer.message_threads.sync_sequence_id
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115 | this.seqId = seqId
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116 | resolve()
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117 | if (!this.session.tokens.syncToken) {
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118 | await this.createQueue(seqId)
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119 | return
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120 | }
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121 |
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122 | await this.createQueue(seqId)
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123 | })
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124 |
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125 | try {
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126 | await this.mqttApi.connect(
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127 | this.session.tokens,
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128 | this.session.deviceId
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129 | )
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130 | } catch (err) {
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131 | return reject(err)
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132 | }
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133 | })
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134 | }
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135 |
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136 | getSession () {
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137 | return this.session
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138 | }
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139 |
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140 | sendMessage (threadId: string, message: string, options?: MessageOptions) {
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141 | return this.mqttApi.sendMessage(threadId, message, options)
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142 | }
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143 |
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144 | |
145 |
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146 |
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147 |
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148 | async sendPresenceState (recipientUserId: string, present: boolean) {
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149 | const payload = new Payloads.PresenceState(recipientUserId, present)
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150 | return this.mqttApi.sendPublish(payload.getTopic(), await Payloads.encodePayload(payload))
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151 | }
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152 |
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153 | |
154 |
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155 |
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156 |
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157 | async sendTypingState (threadOrRecipientUserId: string, present: boolean) {
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158 | const payload = new Payloads.TypingState(this.session.tokens.uid, present, threadOrRecipientUserId)
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159 | return this.mqttApi.sendPublish(payload.getTopic(), await Payloads.encodePayload(payload))
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160 | }
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161 |
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162 | |
163 |
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164 |
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165 | async sendReadReceipt (message: Message) {
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166 | const payload = new Payloads.ReadReceipt(message)
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167 | return this.mqttApi.sendPublish(payload.getTopic(), await Payloads.encodePayload(payload))
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168 | }
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169 |
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170 | async getThreadList (count: number): Promise<Thread[]> {
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171 | const threads = await this.httpApi.threadListQuery(count)
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172 | return threads.viewer.message_threads.nodes.map(parseThread)
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173 | }
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174 |
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175 | sendAttachmentFile (threadId: string, attachmentPath: string, extension?: string) {
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176 | if (!fs.existsSync(attachmentPath)) throw new AttachmentNotFoundError(attachmentPath)
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177 | const stream = fs.createReadStream(attachmentPath)
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178 | if (!extension) extension = path.parse(attachmentPath).ext
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179 | const length = fs.statSync(attachmentPath).size.toString()
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180 | return this.httpApi.sendImage(stream, extension, this.session.tokens.uid, threadId, length)
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181 | }
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182 |
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183 | sendAttachmentStream (threadId: string, extension: string, attachment: Readable) {
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184 | return this.httpApi.sendImage(attachment, extension, this.session.tokens.uid, threadId)
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185 | }
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186 |
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187 | async getAttachmentURL (messageId: string, attachmentId: string): Promise<string> {
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188 | const attachment = await this.httpApi.getAttachment(messageId, attachmentId)
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189 | if (!attachment.redirect_uri) throw new AttachmentURLMissingError(attachment)
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190 | return attachment.redirect_uri
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191 | }
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192 |
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193 | getAttachmentInfo (messageId: string, attachmentId: string) {
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194 | return this.httpApi.getAttachment(messageId, attachmentId)
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195 | }
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196 |
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197 | async getStickerURL (stickerId: number): Promise<string> {
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198 | const sticker = await this.httpApi.getSticker(stickerId)
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199 | return sticker[stickerId.toString()].thread_image.uri
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200 | }
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201 |
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202 | async getThreadInfo (threadId: string): Promise<Thread> {
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203 | const res = await this.httpApi.threadQuery(threadId)
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204 | const thread = res[threadId]
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205 | if (!thread) return null
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206 | return parseThread(thread)
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207 | }
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208 |
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209 | async getUserInfo (userId: string): Promise<User> {
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210 | const res = await this.httpApi.userQuery(userId)
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211 | const user = res[userId]
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212 | if (!user) return null
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213 | return parseUser(user)
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214 | }
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215 |
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216 | async getMessages (threadId: string, count: number): Promise<Message> {
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217 | const res = await this.httpApi.threadMessagesQuery(threadId, count)
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218 | const thread = res[threadId]
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219 | if (!thread) return null
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220 | return thread.messages.nodes.map(message => parseThreadMessage(threadId, message))
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221 | }
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222 |
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223 | private async createQueue (seqId: number) {
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224 |
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225 |
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226 |
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227 |
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228 |
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229 |
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230 | const obj = (
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231 | {
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232 | initial_titan_sequence_id: seqId,
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233 | delta_batch_size: 125,
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234 | device_params: {
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235 | image_sizes: {
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236 | 0: '4096x4096',
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237 | 4: '312x312',
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238 | 1: '768x768',
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239 | 2: '420x420',
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240 | 3: '312x312'
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241 | },
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242 | animated_image_format: 'WEBP,GIF',
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243 | animated_image_sizes: {
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244 | 0: '4096x4096',
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245 | 4: '312x312',
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246 | 1: '768x768',
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247 | 2: '420x420',
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248 | 3: '312x312'
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249 | }
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250 | },
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251 | entity_fbid: this.session.tokens.uid,
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252 | sync_api_version: 3,
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253 | encoding: 'JSON',
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254 | queue_params: {
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255 |
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256 |
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257 | client_delta_sync_bitmask: 'Amvr2dBlf7PNgA',
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258 | graphql_query_hashes: {
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259 | xma_query_id: '306810703252313'
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260 | },
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261 | graphql_query_params: {
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262 | 306810703252313: {
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263 | xma_id: '<ID>',
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264 | small_preview_width: 624,
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265 | small_preview_height: 312,
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266 | large_preview_width: 1536,
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267 | large_preview_height: 768,
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268 | full_screen_width: 4096,
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269 | full_screen_height: 4096,
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270 | blur: 0.0,
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271 | nt_context: {
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272 | styles_id: 'fe1fd5357bb40c81777dc915dfbd6aa4',
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273 | pixel_ratio: 3.0
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274 | }
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275 | }
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276 | }
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277 | }
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278 | }
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279 | )
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280 |
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281 | await this.mqttApi.sendPublish(
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282 | '/messenger_sync_create_queue',
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283 | JSON.stringify(obj)
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284 | )
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285 | }
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286 |
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287 | private async connectQueue (seqId) {
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288 |
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289 |
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290 |
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291 |
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292 |
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293 | const obj = {
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294 | delta_batch_size: 125,
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295 | max_deltas_able_to_process: 1250,
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296 | sync_api_version: 10,
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297 | encoding: 'JSON',
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298 |
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299 | last_seq_id: seqId,
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300 | sync_token: this.session.tokens.syncToken
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301 | }
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302 |
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303 | await this.mqttApi.sendPublish(
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304 | '/messenger_sync_get_diffs',
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305 | JSON.stringify(obj)
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306 | )
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307 | }
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308 |
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309 | private async handleMS (ms: string) {
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310 | let data
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311 | try {
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312 | data = JSON.parse(ms.replace('\u0000', ''))
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313 | } catch (err) {
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314 | console.error('Error while parsing the following message:')
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315 | console.error(ms)
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316 | return
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317 | }
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318 |
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319 |
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320 | if (data.syncToken) {
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321 | this.session.tokens.syncToken = data.syncToken
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322 | await this.connectQueue(this.seqId)
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323 | return
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324 | }
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325 |
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326 | if (!data.deltas || !Array.isArray(data.deltas)) return
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327 |
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328 | data.deltas.forEach(delta => {
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329 | debugLog(delta)
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330 | this.handleMessage(delta)
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331 | })
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332 | }
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333 |
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334 | private handleMessage (event: any) {
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335 | if (event.deltaNewMessage) {
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336 | const message = parseDeltaMessage(event.deltaNewMessage)
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337 | if (!message || message.authorId === this.session.tokens.uid && !this.options.selfListen) return
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338 | this.emit('message', message)
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339 | }
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340 |
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341 | const deltaEvent = parseDeltaEvent(event)
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342 | if (!deltaEvent) return
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343 | this.emit('event', deltaEvent)
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344 |
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345 | this.emit(deltaEvent.type, deltaEvent.event)
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346 | }
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347 | }
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