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fix: harden Protobuf Deserialization and Refactor Utilities (#1820)

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* refactor: reorganize browser utility functions and improve buffer handling

* fix: harden protobuf deserialization and clean up code

* refactor: simplify data handling in GroupCipher and SenderKey classes

* fix: Ensure consistent Buffer hydration and remove redundant code

* refactor: update decodeAndHydrate calls to use proto types for improved type safety
This commit is contained in:
João Lucas de Oliveira Lopes
2025-09-25 22:45:30 -03:00
committed by GitHub
parent 202c39f3fe
commit 3b46d43beb
23 changed files with 194 additions and 160 deletions
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src/Utils/validate-connection.ts
+7 -3
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@@ -6,6 +6,7 @@ import type { AuthenticationCreds, SignalCreds, SocketConfig } from '../Types'
import { type BinaryNode, getBinaryNodeChild, jidDecode, S_WHATSAPP_NET } from '../WABinary'
import { Curve, hmacSign } from './crypto'
import { encodeBigEndian } from './generics'
import { decodeAndHydrate } from './proto-utils'
import { createSignalIdentity } from './signal'
const getUserAgent = (config: SocketConfig): proto.ClientPayload.IUserAgent => {
@@ -135,7 +136,10 @@ export const configureSuccessfulPairing = (
const jid = deviceNode.attrs.jid
const lid = deviceNode.attrs.lid
const { details, hmac, accountType } = proto.ADVSignedDeviceIdentityHMAC.decode(deviceIdentityNode.content as Buffer)
const { details, hmac, accountType } = decodeAndHydrate(
proto.ADVSignedDeviceIdentityHMAC,
deviceIdentityNode.content as Buffer
)
const isHostedAccount = accountType !== undefined && accountType === proto.ADVEncryptionType.HOSTED
const hmacPrefix = isHostedAccount ? Buffer.from([6, 5]) : Buffer.alloc(0)
@@ -144,7 +148,7 @@ export const configureSuccessfulPairing = (
throw new Boom('Invalid account signature')
}
const account = proto.ADVSignedDeviceIdentity.decode(details)
const account = decodeAndHydrate(proto.ADVSignedDeviceIdentity, details)
const { accountSignatureKey, accountSignature, details: deviceDetails } = account
const accountMsg = Buffer.concat([Buffer.from([6, 0]), deviceDetails, signedIdentityKey.public])
if (!Curve.verify(accountSignatureKey, accountMsg, accountSignature)) {
@@ -158,7 +162,7 @@ export const configureSuccessfulPairing = (
const identity = createSignalIdentity(lid!, accountSignatureKey)
const accountEnc = encodeSignedDeviceIdentity(account, false)
const deviceIdentity = proto.ADVDeviceIdentity.decode(account.details)
const deviceIdentity = decodeAndHydrate(proto.ADVDeviceIdentity, account.details)
const reply: BinaryNode = {
tag: 'iq',