@ibradecode/bails
Version:
WhatsApp API
199 lines (198 loc) • 8.2 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.decryptMessageNode = exports.decodeMessageNode = void 0;
const boom_1 = require("@hapi/boom");
const WAProto_1 = require("../../WAProto");
const WABinary_1 = require("../WABinary");
const generics_1 = require("./generics");
const NO_MESSAGE_FOUND_ERROR_TEXT = 'Message absent from node';
/**
* Decode the received node as a message.
* @note this will only parse the message, not decrypt it
*/
function decodeMessageNode(stanza, meId, meLid) {
var _a, _b;
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 isMe = (jid) => (0, WABinary_1.areJidsSameUser)(jid, meId);
const isMeLid = (jid) => (0, WABinary_1.areJidsSameUser)(jid, meLid);
if ((0, 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 ((0, 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 ((0, WABinary_1.isJidGroup)(from)) {
if (!participant) {
throw new boom_1.Boom('No participant in group message');
}
msgType = 'group';
author = participant;
chatId = from;
}
else if ((0, WABinary_1.isJidBroadcast)(from)) {
if (!participant) {
throw new boom_1.Boom('No participant in group message');
}
const isParticipantMe = isMe(participant);
if ((0, WABinary_1.isJidStatusBroadcast)(from)) {
msgType = isParticipantMe ? 'direct_peer_status' : 'other_status';
}
else {
msgType = isParticipantMe ? 'peer_broadcast' : 'other_broadcast';
}
chatId = from;
author = participant;
}
else if ((0, WABinary_1.isJidNewsLetter)(from)) {
msgType = 'newsletter';
author = from;
chatId = from;
}
else {
throw new boom_1.Boom('Unknown message type', { data: stanza });
}
const fromMe = (0, WABinary_1.isJidNewsLetter)(from) ? !!((_a = stanza.attrs) === null || _a === void 0 ? void 0 : _a.is_sender) : ((0, WABinary_1.isLidUser)(from) ? isMeLid : isMe)(stanza.attrs.participant || stanza.attrs.from);
const pushname = stanza.attrs.notify;
const key = {
remoteJid: chatId,
fromMe,
id: msgId,
participant
};
const fullMessage = {
key,
messageTimestamp: +stanza.attrs.t,
pushName: pushname,
broadcast: (0, WABinary_1.isJidBroadcast)(from)
};
if (msgType === 'newsletter') {
fullMessage.newsletterServerId = +((_b = stanza.attrs) === null || _b === void 0 ? void 0 : _b.server_id);
}
if (key.fromMe) {
fullMessage.status = WAProto_1.proto.WebMessageInfo.Status.SERVER_ACK;
}
return {
fullMessage,
author,
sender: msgType === 'chat' ? author : chatId
};
}
exports.decodeMessageNode = decodeMessageNode;
const decryptMessageNode = (stanza, meId, meLid, repository, logger) => {
const { fullMessage, author, sender } = decodeMessageNode(stanza, meId, meLid);
return {
fullMessage,
category: stanza.attrs.category,
author,
async decrypt() {
var _a;
let decryptables = 0;
async function processSenderKeyDistribution(msg) {
if (msg.senderKeyDistributionMessage) {
try {
await repository.processSenderKeyDistributionMessage({
authorJid: author,
item: msg.senderKeyDistributionMessage
});
}
catch (err) {
logger.error({ key: fullMessage.key, err }, 'failed to process senderKeyDistribution');
}
}
}
if ((0, WABinary_1.isJidNewsLetter)(fullMessage.key.remoteJid)) {
const node = (0, WABinary_1.getBinaryNodeChild)(stanza, 'plaintext');
const msg = WAProto_1.proto.Message.decode(node === null || node === void 0 ? void 0 : node.content);
await processSenderKeyDistribution(msg);
fullMessage.message = msg;
decryptables += 1;
}
else 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 !== 'enc') {
continue;
}
if (!(content instanceof Uint8Array)) {
continue;
}
decryptables += 1;
let msgBuffer;
try {
const e2eType = attrs.type;
switch (e2eType) {
case 'skmsg':
msgBuffer = await repository.decryptGroupMessage({
group: sender,
authorJid: author,
msg: content
});
break;
case 'pkmsg':
case 'msg':
const user = (0, WABinary_1.isJidUser)(sender) ? sender : author;
msgBuffer = await repository.decryptMessage({
jid: user,
type: e2eType,
ciphertext: content
});
break;
default:
throw new Error(`Unknown e2e type: ${e2eType}`);
}
let msg = WAProto_1.proto.Message.decode((0, generics_1.unpadRandomMax16)(msgBuffer));
msg = ((_a = msg.deviceSentMessage) === null || _a === void 0 ? void 0 : _a.message) || msg;
await processSenderKeyDistribution(msg);
if (fullMessage.message) {
Object.assign(fullMessage.message, msg);
}
else {
fullMessage.message = msg;
}
}
catch (err) {
logger.error({ key: fullMessage.key, err }, 'failed to decrypt message');
fullMessage.messageStubType = WAProto_1.proto.WebMessageInfo.StubType.CIPHERTEXT;
fullMessage.messageStubParameters = [err.message];
}
}
}
// if nothing was found to decrypt
if (!decryptables) {
fullMessage.messageStubType = WAProto_1.proto.WebMessageInfo.StubType.CIPHERTEXT;
fullMessage.messageStubParameters = [NO_MESSAGE_FOUND_ERROR_TEXT, JSON.stringify(stanza, generics_1.BufferJSON.replacer)];
}
}
};
};
exports.decryptMessageNode = decryptMessageNode;