@whiskeysockets/baileys
Version:
A WebSockets library for interacting with WhatsApp Web
154 lines (153 loc) • 6.97 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.getNextPreKeysNode = exports.getNextPreKeys = exports.extractDeviceJids = exports.parseAndInjectE2ESessions = exports.xmppPreKey = exports.xmppSignedPreKey = exports.generateOrGetPreKeys = exports.getPreKeys = exports.createSignalIdentity = void 0;
const lodash_1 = require("lodash");
const Defaults_1 = require("../Defaults");
const WABinary_1 = require("../WABinary");
const crypto_1 = require("./crypto");
const generics_1 = require("./generics");
const createSignalIdentity = (wid, accountSignatureKey) => {
return {
identifier: { name: wid, deviceId: 0 },
identifierKey: (0, crypto_1.generateSignalPubKey)(accountSignatureKey)
};
};
exports.createSignalIdentity = createSignalIdentity;
const getPreKeys = async ({ get }, min, limit) => {
const idList = [];
for (let id = min; id < limit; id++) {
idList.push(id.toString());
}
return get('pre-key', idList);
};
exports.getPreKeys = getPreKeys;
const generateOrGetPreKeys = (creds, range) => {
const avaliable = creds.nextPreKeyId - creds.firstUnuploadedPreKeyId;
const remaining = range - avaliable;
const lastPreKeyId = creds.nextPreKeyId + remaining - 1;
const newPreKeys = {};
if (remaining > 0) {
for (let i = creds.nextPreKeyId; i <= lastPreKeyId; i++) {
newPreKeys[i] = crypto_1.Curve.generateKeyPair();
}
}
return {
newPreKeys,
lastPreKeyId,
preKeysRange: [creds.firstUnuploadedPreKeyId, range],
};
};
exports.generateOrGetPreKeys = generateOrGetPreKeys;
const xmppSignedPreKey = (key) => ({
tag: 'skey',
attrs: {},
content: [
{ tag: 'id', attrs: {}, content: (0, generics_1.encodeBigEndian)(key.keyId, 3) },
{ tag: 'value', attrs: {}, content: key.keyPair.public },
{ tag: 'signature', attrs: {}, content: key.signature }
]
});
exports.xmppSignedPreKey = xmppSignedPreKey;
const xmppPreKey = (pair, id) => ({
tag: 'key',
attrs: {},
content: [
{ tag: 'id', attrs: {}, content: (0, generics_1.encodeBigEndian)(id, 3) },
{ tag: 'value', attrs: {}, content: pair.public }
]
});
exports.xmppPreKey = xmppPreKey;
const parseAndInjectE2ESessions = async (node, repository) => {
const extractKey = (key) => (key ? ({
keyId: (0, WABinary_1.getBinaryNodeChildUInt)(key, 'id', 3),
publicKey: (0, crypto_1.generateSignalPubKey)((0, WABinary_1.getBinaryNodeChildBuffer)(key, 'value')),
signature: (0, WABinary_1.getBinaryNodeChildBuffer)(key, 'signature'),
}) : undefined);
const nodes = (0, WABinary_1.getBinaryNodeChildren)((0, WABinary_1.getBinaryNodeChild)(node, 'list'), 'user');
for (const node of nodes) {
(0, WABinary_1.assertNodeErrorFree)(node);
}
// Most of the work in repository.injectE2ESession is CPU intensive, not IO
// So Promise.all doesn't really help here,
// but blocks even loop if we're using it inside keys.transaction, and it makes it "sync" actually
// This way we chunk it in smaller parts and between those parts we can yield to the event loop
// It's rare case when you need to E2E sessions for so many users, but it's possible
const chunkSize = 100;
const chunks = (0, lodash_1.chunk)(nodes, chunkSize);
for (const nodesChunk of chunks) {
await Promise.all(nodesChunk.map(async (node) => {
const signedKey = (0, WABinary_1.getBinaryNodeChild)(node, 'skey');
const key = (0, WABinary_1.getBinaryNodeChild)(node, 'key');
const identity = (0, WABinary_1.getBinaryNodeChildBuffer)(node, 'identity');
const jid = node.attrs.jid;
const registrationId = (0, WABinary_1.getBinaryNodeChildUInt)(node, 'registration', 4);
await repository.injectE2ESession({
jid,
session: {
registrationId: registrationId,
identityKey: (0, crypto_1.generateSignalPubKey)(identity),
signedPreKey: extractKey(signedKey),
preKey: extractKey(key)
}
});
}));
}
};
exports.parseAndInjectE2ESessions = parseAndInjectE2ESessions;
const extractDeviceJids = (result, myJid, excludeZeroDevices) => {
const { user: myUser, device: myDevice } = (0, WABinary_1.jidDecode)(myJid);
const extracted = [];
for (const userResult of result) {
const { devices, id } = userResult;
const { user } = (0, WABinary_1.jidDecode)(id);
const deviceList = devices === null || devices === void 0 ? void 0 : devices.deviceList;
if (Array.isArray(deviceList)) {
for (const { id: device, keyIndex } of deviceList) {
if ((!excludeZeroDevices || device !== 0) && // if zero devices are not-excluded, or device is non zero
(myUser !== user || myDevice !== device) && // either different user or if me user, not this device
(device === 0 || !!keyIndex) // ensure that "key-index" is specified for "non-zero" devices, produces a bad req otherwise
) {
extracted.push({ user, device });
}
}
}
}
return extracted;
};
exports.extractDeviceJids = extractDeviceJids;
/**
* get the next N keys for upload or processing
* @param count number of pre-keys to get or generate
*/
const getNextPreKeys = async ({ creds, keys }, count) => {
const { newPreKeys, lastPreKeyId, preKeysRange } = (0, exports.generateOrGetPreKeys)(creds, count);
const update = {
nextPreKeyId: Math.max(lastPreKeyId + 1, creds.nextPreKeyId),
firstUnuploadedPreKeyId: Math.max(creds.firstUnuploadedPreKeyId, lastPreKeyId + 1)
};
await keys.set({ 'pre-key': newPreKeys });
const preKeys = await (0, exports.getPreKeys)(keys, preKeysRange[0], preKeysRange[0] + preKeysRange[1]);
return { update, preKeys };
};
exports.getNextPreKeys = getNextPreKeys;
const getNextPreKeysNode = async (state, count) => {
const { creds } = state;
const { update, preKeys } = await (0, exports.getNextPreKeys)(state, count);
const node = {
tag: 'iq',
attrs: {
xmlns: 'encrypt',
type: 'set',
to: WABinary_1.S_WHATSAPP_NET,
},
content: [
{ tag: 'registration', attrs: {}, content: (0, generics_1.encodeBigEndian)(creds.registrationId) },
{ tag: 'type', attrs: {}, content: Defaults_1.KEY_BUNDLE_TYPE },
{ tag: 'identity', attrs: {}, content: creds.signedIdentityKey.public },
{ tag: 'list', attrs: {}, content: Object.keys(preKeys).map(k => (0, exports.xmppPreKey)(preKeys[+k], +k)) },
(0, exports.xmppSignedPreKey)(creds.signedPreKey)
]
};
return { update, node };
};
exports.getNextPreKeysNode = getNextPreKeysNode;