Files
Baileys/src/Connection/messages.ts
Adhiraj Singh e09d0ba24e update version
2021-08-13 18:06:11 +05:30

548 lines
17 KiB
TypeScript

import BinaryNode from "../BinaryNode";
import { Boom } from '@hapi/boom'
import { EventEmitter } from 'events'
import { Chat, Presence, WAMessageCursor, SocketConfig, WAMessage, WAMessageKey, ParticipantAction, WAMessageProto, WAMessageStatus, WAMessageStubType, GroupMetadata, AnyMessageContent, MiscMessageGenerationOptions, WAFlag, WAMetric, WAUrlInfo, MediaConnInfo, MessageUpdateType, MessageInfo, MessageInfoUpdate, WAMediaUploadFunction, MediaType, WAMessageUpdate } from "../Types";
import { isGroupID, toNumber, whatsappID, generateWAMessage, decryptMediaMessageBuffer } from "../Utils";
import makeChatsSocket from "./chats";
import { DEFAULT_ORIGIN, MEDIA_PATH_MAP, WA_DEFAULT_EPHEMERAL } from "../Defaults";
import got from "got";
const STATUS_MAP = {
read: WAMessageStatus.READ,
message: WAMessageStatus.DELIVERY_ACK,
error: WAMessageStatus.ERROR
} as { [_: string]: WAMessageStatus }
const makeMessagesSocket = (config: SocketConfig) => {
const { logger } = config
const sock = makeChatsSocket(config)
const {
ev,
socketEvents,
query,
generateMessageTag,
currentEpoch,
setQuery,
getState
} = sock
let mediaConn: Promise<MediaConnInfo>
const refreshMediaConn = async(forceGet = false) => {
let media = await mediaConn
if (!media || forceGet || (new Date().getTime()-media.fetchDate.getTime()) > media.ttl*1000) {
mediaConn = (async() => {
const {media_conn} = await query({
json: ['query', 'mediaConn'],
requiresPhoneConnection: false
})
media_conn.fetchDate = new Date()
return media_conn as MediaConnInfo
})()
}
return mediaConn
}
const fetchMessagesFromWA = async(
jid: string,
count: number,
cursor?: WAMessageCursor
) => {
let key: WAMessageKey
if(cursor) {
key = 'before' in cursor ? cursor.before : cursor.after
}
const { data }:BinaryNode = await query({
json: new BinaryNode(
'query',
{
epoch: currentEpoch().toString(),
type: 'message',
jid: jid,
kind: !cursor || 'before' in cursor ? 'before' : 'after',
count: count.toString(),
index: key?.id,
owner: key?.fromMe === false ? 'false' : 'true',
}
),
binaryTag: [WAMetric.queryMessages, WAFlag.ignore],
expect200: false,
requiresPhoneConnection: true
})
if(Array.isArray(data)) {
return data.map(data => data.data as WAMessage)
}
return []
}
const updateMediaMessage = async(message: WAMessage) => {
const content = message.message?.audioMessage || message.message?.videoMessage || message.message?.imageMessage || message.message?.stickerMessage || message.message?.documentMessage
if (!content) throw new Boom(
`given message ${message.key.id} is not a media message`,
{ statusCode: 400, data: message }
)
const response = await query ({
json: new BinaryNode(
'query',
{type: 'media', index: message.key.id, owner: message.key.fromMe ? 'true' : 'false', jid: message.key.remoteJid, epoch: currentEpoch().toString()}
),
binaryTag: [WAMetric.queryMedia, WAFlag.ignore],
expect200: true,
requiresPhoneConnection: true
})
if(!response[1]) {
throw new Boom('Media not present on phone', { statusCode: 422 })
}
Object.keys(response[1]).forEach (key => content[key] = response[1][key]) // update message
ev.emit('messages.update', [{ key: message.key, update: { message: message.message } }])
return response
}
const onMessage = (message: WAMessage, type: MessageUpdateType | 'update') => {
const jid = message.key.remoteJid!
// store chat updates in this
const chatUpdate: Partial<Chat> = {
jid,
t: +toNumber(message.messageTimestamp)
}
const emitGroupUpdate = (update: Partial<GroupMetadata>) => {
ev.emit('groups.update', [ { id: jid, ...update } ])
}
// add to count if the message isn't from me & there exists a message
if(!message.key.fromMe && message.message) {
chatUpdate.count = 1
const participant = whatsappID(message.participant || jid)
chatUpdate.presences = {
[participant]: {
lastKnownPresence: Presence.available
}
}
}
const ephemeralProtocolMsg = message.message?.ephemeralMessage?.message?.protocolMessage
if (
ephemeralProtocolMsg &&
ephemeralProtocolMsg.type === WAMessageProto.ProtocolMessage.ProtocolMessageType.EPHEMERAL_SETTING
) {
chatUpdate.eph_setting_ts = message.messageTimestamp.toString()
chatUpdate.ephemeral = ephemeralProtocolMsg.ephemeralExpiration.toString()
if(isGroupID(jid)) {
emitGroupUpdate({ ephemeralDuration: ephemeralProtocolMsg.ephemeralExpiration || null })
}
}
const protocolMessage = message.message?.protocolMessage
// if it's a message to delete another message
if (protocolMessage) {
switch (protocolMessage.type) {
case WAMessageProto.ProtocolMessage.ProtocolMessageType.REVOKE:
const key = protocolMessage.key
const messageStubType = WAMessageStubType.REVOKE
ev.emit('messages.update', [
{
// the key of the deleted message is updated
update: { message: null, key: message.key, messageStubType },
key
}
])
return
default:
break
}
}
// check if the message is an action
if (message.messageStubType) {
const { user } = getState()
//let actor = whatsappID (message.participant)
let participants: string[]
const emitParticipantsUpdate = (action: ParticipantAction) => (
ev.emit('group-participants.update', { jid, participants, action })
)
switch (message.messageStubType) {
case WAMessageStubType.CHANGE_EPHEMERAL_SETTING:
chatUpdate.eph_setting_ts = message.messageTimestamp.toString()
chatUpdate.ephemeral = message.messageStubParameters[0]
if(isGroupID(jid)) {
emitGroupUpdate({ ephemeralDuration: +message.messageStubParameters[0] || null })
}
break
case WAMessageStubType.GROUP_PARTICIPANT_LEAVE:
case WAMessageStubType.GROUP_PARTICIPANT_REMOVE:
participants = message.messageStubParameters.map (whatsappID)
emitParticipantsUpdate('remove')
// mark the chat read only if you left the group
if (participants.includes(user.jid)) {
chatUpdate.read_only = 'true'
}
break
case WAMessageStubType.GROUP_PARTICIPANT_ADD:
case WAMessageStubType.GROUP_PARTICIPANT_INVITE:
case WAMessageStubType.GROUP_PARTICIPANT_ADD_REQUEST_JOIN:
participants = message.messageStubParameters.map (whatsappID)
if (participants.includes(user.jid)) {
chatUpdate.read_only = 'false'
}
emitParticipantsUpdate('add')
break
case WAMessageStubType.GROUP_CHANGE_ANNOUNCE:
const announce = message.messageStubParameters[0] === 'on' ? 'true' : 'false'
emitGroupUpdate({ announce })
break
case WAMessageStubType.GROUP_CHANGE_RESTRICT:
const restrict = message.messageStubParameters[0] === 'on' ? 'true' : 'false'
emitGroupUpdate({ restrict })
break
case WAMessageStubType.GROUP_CHANGE_SUBJECT:
case WAMessageStubType.GROUP_CREATE:
chatUpdate.name = message.messageStubParameters[0]
emitGroupUpdate({ subject: chatUpdate.name })
break
}
}
if(Object.keys(chatUpdate).length > 1) {
ev.emit('chats.update', [chatUpdate])
}
if(type === 'update') {
ev.emit('messages.update', [ { update: message, key: message.key } ])
} else {
ev.emit('messages.upsert', { messages: [message], type })
}
}
const waUploadToServer: WAMediaUploadFunction = async(stream, { mediaType, fileEncSha256B64 }) => {
// send a query JSON to obtain the url & auth token to upload our media
let uploadInfo = await refreshMediaConn(false)
let mediaUrl: string
for (let host of uploadInfo.hosts) {
const auth = encodeURIComponent(uploadInfo.auth) // the auth token
const url = `https://${host.hostname}${MEDIA_PATH_MAP[mediaType]}/${fileEncSha256B64}?auth=${auth}&token=${fileEncSha256B64}`
try {
const {body: responseText} = await got.post(
url,
{
headers: {
'Content-Type': 'application/octet-stream',
'Origin': DEFAULT_ORIGIN
},
agent: {
https: config.agent
},
body: stream
}
)
const result = JSON.parse(responseText)
mediaUrl = result?.url
if (mediaUrl) break
else {
uploadInfo = await refreshMediaConn(true)
throw new Error(`upload failed, reason: ${JSON.stringify(result)}`)
}
} catch (error) {
const isLast = host.hostname === uploadInfo.hosts[uploadInfo.hosts.length-1].hostname
logger.debug(`Error in uploading to ${host.hostname} (${error}) ${isLast ? '' : ', retrying...'}`)
}
}
if (!mediaUrl) {
throw new Boom(
'Media upload failed on all hosts',
{ statusCode: 500 }
)
}
return { mediaUrl }
}
/** Query a string to check if it has a url, if it does, return WAUrlInfo */
const generateUrlInfo = async(text: string) => {
const response = await query({
json: new BinaryNode(
'query',
{type: 'url', url: text, epoch: currentEpoch().toString()}
),
binaryTag: [26, WAFlag.ignore],
expect200: true,
requiresPhoneConnection: false
})
if(response[1]) {
response[1].jpegThumbnail = response[2]
}
return response[1] as WAUrlInfo
}
/** Relay (send) a WAMessage; more advanced functionality to send a built WA Message, you may want to stick with sendMessage() */
const relayWAMessage = async(message: WAMessage, { waitForAck } = { waitForAck: true }) => {
const json = new BinaryNode(
'action',
{ epoch: currentEpoch().toString(), type: 'relay' },
[ new BinaryNode('message', {}, message) ]
)
const isMsgToMe = message.key.remoteJid === getState().user?.jid
const flag = isMsgToMe ? WAFlag.acknowledge : WAFlag.ignore // acknowledge when sending message to oneself
const mID = message.key.id
const finalState = isMsgToMe ? WAMessageStatus.READ : WAMessageStatus.SERVER_ACK
message.status = WAMessageStatus.PENDING
const promise = query({
json,
binaryTag: [WAMetric.message, flag],
tag: mID,
expect200: true,
requiresPhoneConnection: true
})
if(waitForAck) {
await promise
message.status = finalState
} else {
const emitUpdate = (status: WAMessageStatus) => {
message.status = status
ev.emit('messages.update', [ { key: message.key, update: { status } } ])
}
promise
.then(() => emitUpdate(finalState))
.catch(() => emitUpdate(WAMessageStatus.ERROR))
}
onMessage(message, 'append')
}
// messages received
const messagesUpdate = ({ data }: BinaryNode, type: 'prepend' | 'last') => {
if(Array.isArray(data)) {
const messages: WAMessage[] = []
for(let i = data.length-1; i >= 0;i--) {
messages.push(data[i].data as WAMessage)
}
ev.emit('messages.upsert', { messages, type })
}
}
socketEvents.on('CB:action,add:last', json => messagesUpdate(json, 'last'))
socketEvents.on('CB:action,add:unread', json => messagesUpdate(json, 'prepend'))
socketEvents.on('CB:action,add:before', json => messagesUpdate(json, 'prepend'))
// new messages
socketEvents.on('CB:action,add:relay,message', ({data}: BinaryNode) => {
if(Array.isArray(data)) {
for(const { data: msg } of data) {
onMessage(msg as WAMessage, 'notify')
}
}
})
// If a message has been updated (usually called when a video message gets its upload url, or live locations)
socketEvents.on ('CB:action,add:update,message', ({ data }: BinaryNode) => {
if(Array.isArray(data)) {
for(const { data: msg } of data) {
onMessage(msg as WAMessage, 'update')
}
}
})
// message status updates
const onMessageStatusUpdate = ({ data }: BinaryNode) => {
if(Array.isArray(data)) {
const updates: WAMessageUpdate[] = []
for(const { attributes: json } of data) {
const key: WAMessageKey = {
remoteJid: whatsappID(json.jid),
id: json.index,
fromMe: json.owner === 'true'
}
const status = STATUS_MAP[json.type]
if(status) {
updates.push({ key, update: { status } })
} else {
logger.warn({ data }, 'got unknown status update for message')
}
}
ev.emit('messages.update', updates)
}
}
const onMessageInfoUpdate = ([,attributes]: [string,{[_: string]: any}]) => {
let ids = attributes.id as string[] | string
if(typeof ids === 'string') {
ids = [ids]
}
let updateKey: keyof MessageInfoUpdate['update']
switch(attributes.ack.toString()) {
case '2':
updateKey = 'deliveries'
break
case '3':
updateKey = 'reads'
break
default:
logger.warn({ attributes }, `received unknown message info update`)
return
}
const updates = ids.map<MessageInfoUpdate>(id => ({
key: {
remoteJid: whatsappID(attributes.to),
id,
fromMe: whatsappID(attributes.from) === getState().user?.jid,
},
update: {
[updateKey]: { [whatsappID(attributes.participant)]: new Date(+attributes.t) }
}
}))
ev.emit('message-info.update', updates)
}
socketEvents.on('CB:action,add:relay,received', onMessageStatusUpdate)
socketEvents.on('CB:action,,received', onMessageStatusUpdate)
socketEvents.on('CB:Msg', onMessageInfoUpdate)
socketEvents.on('CB:MsgInfo', onMessageInfoUpdate)
return {
...sock,
relayWAMessage,
generateUrlInfo,
messageInfo: async(jid: string, messageID: string) => {
const { data }: BinaryNode = await query({
json: new BinaryNode(
'query',
{type: 'message_info', index: messageID, jid: jid, epoch: currentEpoch().toString()}
),
binaryTag: [WAMetric.queryRead, WAFlag.ignore],
expect200: true,
requiresPhoneConnection: true
})
const info: MessageInfo = { reads: {}, deliveries: {} }
if(Array.isArray(data)) {
for(const { header, data: innerData } of data) {
const [{ attributes }] = (innerData as BinaryNode[])
const jid = whatsappID(attributes.jid)
const date = new Date(+attributes.t * 1000)
switch(header) {
case 'read':
info.reads[jid] = date
break
case 'delivery':
info.deliveries[jid] = date
break
}
}
}
return info
},
downloadMediaMessage: async(message: WAMessage, type: 'buffer' | 'stream' = 'buffer') => {
const downloadMediaMessage = async () => {
let mContent = message.message?.ephemeralMessage?.message || message.message
if (!mContent) throw new Boom('No message present', { statusCode: 400, data: message })
const stream = await decryptMediaMessageBuffer(mContent)
if(type === 'buffer') {
let buffer = Buffer.from([])
for await(const chunk of stream) {
buffer = Buffer.concat([buffer, chunk])
}
return buffer
}
return stream
}
try {
const result = await downloadMediaMessage()
return result
} catch (error) {
if(error.message.includes('404')) { // media needs to be updated
logger.info (`updating media of message: ${message.key.id}`)
await updateMediaMessage(message)
const result = await downloadMediaMessage()
return result
}
throw error
}
},
updateMediaMessage,
fetchMessagesFromWA,
/** Load a single message specified by the ID */
loadMessageFromWA: async(jid: string, id: string) => {
let message: WAMessage
// load the message before the given message
let messages = (await fetchMessagesFromWA(jid, 1, { before: {id, fromMe: true} }))
if(!messages[0]) messages = (await fetchMessagesFromWA(jid, 1, { before: {id, fromMe: false} }))
// the message after the loaded message is the message required
const [actual] = await fetchMessagesFromWA(jid, 1, { after: messages[0] && messages[0].key })
message = actual
return message
},
searchMessages: async(txt: string, inJid: string | null, count: number, page: number) => {
const {data, attributes}: BinaryNode = await query({
json: new BinaryNode(
'query',
{
epoch: currentEpoch().toString(),
type: 'search',
search: txt,
count: count.toString(),
page: page.toString(),
jid: inJid
}
),
binaryTag: [24, WAFlag.ignore],
expect200: true
}) // encrypt and send off
const messages = Array.isArray(data) ? data.map(item => item.data as WAMessage) : []
return {
last: attributes?.last === 'true',
messages
}
},
sendWAMessage: async(
jid: string,
content: AnyMessageContent,
options: MiscMessageGenerationOptions & { waitForAck?: boolean }
) => {
const userJid = getState().user?.jid
if(
typeof content === 'object' &&
'disappearingMessagesInChat' in content &&
typeof content['disappearingMessagesInChat'] !== 'undefined' &&
isGroupID(jid)
) {
const { disappearingMessagesInChat } = content
const value = typeof disappearingMessagesInChat === 'boolean' ?
(disappearingMessagesInChat ? WA_DEFAULT_EPHEMERAL : 0) :
disappearingMessagesInChat
const tag = generateMessageTag(true)
await setQuery([
new BinaryNode(
'group',
{ id: tag, jid, type: 'prop', author: userJid },
[ new BinaryNode('ephemeral', { value: value.toString() }) ]
)
], [WAMetric.group, WAFlag.other], tag)
} else {
const msg = await generateWAMessage(
jid,
content,
{
...options,
userJid: userJid,
getUrlInfo: generateUrlInfo,
upload: waUploadToServer
}
)
await relayWAMessage(msg, { waitForAck: options.waitForAck })
return msg
}
}
}
}
export default makeMessagesSocket