@nexon.js/baileys
Version:
WhatsApp API MOD
314 lines (295 loc) • 12.1 kB
JavaScript
Object.defineProperty(exports, "__esModule", { value: true })
const boom_1 = require("@hapi/boom")
const WAProto_1 = require("../../WAProto")
const WABinary_1 = require("../WABinary")
const generics_1 = require("./generics")
const messages_1 = require("./messages")
const NO_MESSAGE_FOUND_ERROR_TEXT = 'Message absent from node'
const MISSING_KEYS_ERROR_TEXT = 'Key used already or never filled'
// Retry configuration for failed decryption
const DECRYPTION_RETRY_CONFIG = {
maxRetries: 3,
baseDelayMs: 100,
sessionRecordErrors: ['No session record', 'SessionError: No session record']
}
const NACK_REASONS = {
ParsingError: 487,
UnrecognizedStanza: 488,
UnrecognizedStanzaClass: 489,
UnrecognizedStanzaType: 490,
InvalidProtobuf: 491,
InvalidHostedCompanionStanza: 493,
MissingMessageSecret: 495,
SignalErrorOldCounter: 496,
MessageDeletedOnPeer: 499,
UnhandledError: 500,
UnsupportedAdminRevoke: 550,
UnsupportedLIDGroup: 551,
DBOperationFailed: 552
}
const extractAddressingContext = (stanza) => {
let senderAlt
let recipientAlt
const sender = stanza.attrs.participant || stanza.attrs.from
const addressingMode = stanza.attrs.addressing_mode || (sender?.endsWith('lid') ? 'lid' : 'pn')
if (WABinary_1.isLidUser(sender)) {
// Message is LID-addressed: sender is LID, extract corresponding PN
// without device data
senderAlt = stanza.attrs.participant_pn || stanza.attrs.sender_pn || stanza.attrs.peer_recipient_pn
recipientAlt = stanza.attrs.recipient_pn
// with device data
if (sender && senderAlt)
senderAlt = WABinary_1.transferDevice(sender, senderAlt)
}
else if (WABinary_1.isJidUser(sender)) {
// Message is PN-addressed: sender is PN, extract corresponding LID
// without device data
senderAlt = stanza.attrs.participant_lid || stanza.attrs.sender_lid || stanza.attrs.peer_recipient_lid
recipientAlt = stanza.attrs.recipient_lid
//with device data
if (sender && senderAlt)
senderAlt = WABinary_1.transferDevice(sender, senderAlt)
}
return {
addressingMode,
senderAlt,
recipientAlt
}
}
const getDecryptionJid = async (sender, repository) => {
if (!sender.includes('@s.whatsapp.net')) {
return sender
}
return (await repository.lidMapping.getLIDForPN(sender))
}
const storeMappingFromEnvelope = async (stanza, sender, decryptionJid, repository, logger) => {
const { senderAlt } = extractAddressingContext(stanza)
if (senderAlt && WABinary_1.isLidUser(senderAlt) && WABinary_1.isJidUser(sender) && decryptionJid === sender) {
try {
await repository.lidMapping.storeLIDPNMappings([{ lid: senderAlt, pn: sender }])
logger.debug({ sender, senderAlt }, 'Stored LID mapping from envelope')
}
catch (error) {
logger.warn({ sender, senderAlt, error }, 'Failed to store LID mapping')
}
}
}
/**
* Decode the received node as a message.
* @note this will only parse the message, not decrypt it
*/
function decodeMessageNode(stanza, meId, meLid) {
let msgType
let chatId
let author
const msgId = stanza.attrs.id
const from = stanza.attrs.from
const participant = stanza.attrs.participant
const recipient = stanza.attrs.recipient
const addressingContext = extractAddressingContext(stanza)
const isMe = (jid) => WABinary_1.areJidsSameUser(jid, meId)
const isMeLid = (jid) => WABinary_1.areJidsSameUser(jid, meLid)
if (WABinary_1.isJidUser(from)) {
if (recipient) {
if (!isMe(from)) {
throw new boom_1.Boom('receipient present, but msg not from me', { data: stanza })
}
chatId = recipient
}
else {
chatId = from
}
msgType = 'chat'
author = from
}
else if (WABinary_1.isLidUser(from)) {
if (recipient) {
if (!isMeLid(from)) {
throw new boom_1.Boom('receipient present, but msg not from me', { data: stanza })
}
chatId = recipient
}
else {
chatId = from
}
msgType = 'chat'
author = from
}
else if (WABinary_1.isJidGroup(from)) {
if (!participant) {
throw new boom_1.Boom('No participant in group message')
}
msgType = 'group'
author = participant
chatId = from
}
else if (WABinary_1.isJidBroadcast(from)) {
if (!participant) {
throw new boom_1.Boom('No participant in group message')
}
const isParticipantMe = isMe(participant)
if (WABinary_1.isJidStatusBroadcast(from)) {
msgType = isParticipantMe ? 'direct_peer_status' : 'other_status'
}
else {
msgType = isParticipantMe ? 'peer_broadcast' : 'other_broadcast'
}
chatId = from
author = participant
}
else if (WABinary_1.isJidNewsletter(from)) {
msgType = 'newsletter'
chatId = from
author = from
}
else {
throw new boom_1.Boom('Unknown message type', { data: stanza })
}
const fromMe = WABinary_1.isJidNewsletter(from) ? !!stanza.attrs?.is_sender : WABinary_1.isLidUser(from) ? isMeLid(stanza.attrs.participant || stanza.attrs.from) : isMe(stanza.attrs.participant || stanza.attrs.from)
const pushname = stanza?.attrs?.notify
const key = {
remoteJid: chatId,
remoteJidAlt: !WABinary_1.isJidGroup(chatId) ? addressingContext.senderAlt : undefined,
fromMe,
id: msgId,
participant,
participantAlt: WABinary_1.isJidGroup(chatId) ? addressingContext.senderAlt : undefined,
}
const fullMessage = {
key,
messageTimestamp: +stanza.attrs.t,
pushName: pushname,
broadcast: WABinary_1.isJidBroadcast(from),
newsletter: WABinary_1.isJidNewsletter(from)
}
if (msgType === 'newsletter') {
fullMessage.newsletter_server_id = +stanza.attrs?.server_id
}
if (key.fromMe) {
fullMessage.status = WAProto_1.proto.WebMessageInfo.Status.SERVER_ACK
}
if (!key.fromMe) {
fullMessage.platform = messages_1.getDevice(key.id)
}
return {
fullMessage,
author,
sender: msgType === 'chat' ? author : chatId
}
}
const decryptMessageNode = (stanza, meId, meLid, repository, logger) => {
const { fullMessage, author, sender } = decodeMessageNode(stanza, meId, meLid)
return {
fullMessage,
category: stanza.attrs.category,
author,
async decrypt() {
let decryptables = 0
if (Array.isArray(stanza.content)) {
for (const { tag, attrs, content } of stanza.content) {
if (tag === 'verified_name' && content instanceof Uint8Array) {
const cert = WAProto_1.proto.VerifiedNameCertificate.decode(content)
const details = WAProto_1.proto.VerifiedNameCertificate.Details.decode(cert.details)
fullMessage.verifiedBizName = details.verifiedName
}
if (tag === 'unavailable' && attrs.type === 'view_once') {
fullMessage.key.isViewOnce = true; // TODO: remove from here and add a STUB TYPE
}
if (tag !== 'enc' && tag !== 'plaintext') {
continue
}
if (!(content instanceof Uint8Array)) {
continue
}
decryptables += 1
let msgBuffer
const user = WABinary_1.isJidUser(sender) ? sender : author // TODO: flaky logic
const decryptionJid = await getDecryptionJid(user, repository)
if (tag !== 'plaintext') {
await storeMappingFromEnvelope(stanza, user, decryptionJid, repository, logger)
}
try {
const e2eType = tag === 'plaintext' ? 'plaintext' : attrs.type
switch (e2eType) {
case 'skmsg':
msgBuffer = await repository.decryptGroupMessage({
group: sender,
authorJid: author,
msg: content
})
break
case 'pkmsg':
case 'msg':
msgBuffer = await repository.decryptMessage({
jid: decryptionJid,
type: e2eType,
ciphertext: content
})
break
case 'plaintext':
msgBuffer = content
break
default:
throw new Error(`Unknown e2e type: ${e2eType}`)
}
let msg = WAProto_1.proto.Message.decode(e2eType !== 'plaintext' ? generics_1.unpadRandomMax16(msgBuffer) : msgBuffer)
msg = msg.deviceSentMessage?.message || msg
if (msg.senderKeyDistributionMessage) {
//eslint-disable-next-line max-depth
try {
await repository.processSenderKeyDistributionMessage({
authorJid: author,
item: msg.senderKeyDistributionMessage
})
}
catch (err) {
logger.error({ key: fullMessage.key, err }, 'failed to decrypt message')
}
}
if (fullMessage.message) {
Object.assign(fullMessage.message, msg)
}
else {
fullMessage.message = msg
}
}
catch (err) {
const errorContext = {
key: fullMessage.key,
err,
messageType: tag === 'plaintext' ? 'plaintext' : attrs.type,
sender,
author,
isSessionRecordError: isSessionRecordError(err)
}
logger.error(errorContext, 'failed to process sender key distribution message')
fullMessage.messageStubType = WAProto_1.proto.WebMessageInfo.StubType.CIPHERTEXT
fullMessage.messageStubParameters = [err.message.toString()]
}
}
}
// if nothing was found to decrypt
if (!decryptables) {
fullMessage.messageStubType = WAProto_1.proto.WebMessageInfo.StubType.CIPHERTEXT
fullMessage.messageStubParameters = [NO_MESSAGE_FOUND_ERROR_TEXT]
}
}
}
}
/**
* Utility function to check if an error is related to missing session record
*/
function isSessionRecordError(error) {
const errorMessage = error?.message || error?.toString() || ''
return DECRYPTION_RETRY_CONFIG.sessionRecordErrors.some(errorPattern => errorMessage.includes(errorPattern))
}
module.exports = {
NACK_REASONS,
decodeMessageNode,
decryptMessageNode,
extractAddressingContext,
MISSING_KEYS_ERROR_TEXT,
DECRYPTION_RETRY_CONFIG,
NO_MESSAGE_FOUND_ERROR_TEXT
}