1057 lines
51 KiB
C++
1057 lines
51 KiB
C++
/*
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* This is the source code of tgnet library v. 1.1
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* It is licensed under GNU GPL v. 2 or later.
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* You should have received a copy of the license in this archive (see LICENSE).
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*
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* Copyright Nikolai Kudashov, 2015-2018.
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*/
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#include <stdlib.h>
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#include <algorithm>
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#include <openssl/rand.h>
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#include <openssl/sha.h>
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#include <openssl/bn.h>
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#include <openssl/pem.h>
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#include <openssl/aes.h>
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#include <memory.h>
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#include "Handshake.h"
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#include "FileLog.h"
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#include "Datacenter.h"
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#include "ConnectionsManager.h"
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#include "MTProtoScheme.h"
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#include "ApiScheme.h"
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#include "BuffersStorage.h"
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#include "NativeByteBuffer.h"
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#include "Config.h"
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#include "Connection.h"
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thread_local static std::vector<std::string> serverPublicKeys;
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thread_local static std::vector<uint64_t> serverPublicKeysFingerprints;
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thread_local static std::map<int32_t, std::string> cdnPublicKeys;
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thread_local static std::map<int32_t, uint64_t> cdnPublicKeysFingerprints;
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thread_local static std::vector<Datacenter *> cdnWaitingDatacenters;
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thread_local static bool loadingCdnKeys = false;
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thread_local static BN_CTX *bnContext = nullptr;
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thread_local static Config *cdnConfig = nullptr;
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Handshake::Handshake(Datacenter *datacenter, HandshakeType type, HandshakeDelegate *handshakeDelegate) {
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currentDatacenter = datacenter;
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handshakeType = type;
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delegate = handshakeDelegate;
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}
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Handshake::~Handshake() {
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cleanupHandshake();
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}
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void Handshake::beginHandshake(bool reconnect) {
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if (LOGS_ENABLED) DEBUG_D("account%u dc%u handshake: begin, type = %d", currentDatacenter->instanceNum, currentDatacenter->datacenterId, handshakeType);
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cleanupHandshake();
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Connection *connection = getConnection();
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handshakeState = 1;
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if (reconnect) {
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connection->suspendConnection();
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connection->connect();
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}
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#ifdef USE_OLD_KEYS
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TL_req_pq *request = new TL_req_pq();
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request->nonce = std::unique_ptr<ByteArray>(new ByteArray(16));
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RAND_bytes(request->nonce->bytes, 16);
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authNonce = new ByteArray(request->nonce.get());
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sendRequestData(request, true);
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#else
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TL_req_pq_multi *request = new TL_req_pq_multi();
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request->nonce = std::unique_ptr<ByteArray>(new ByteArray(16));
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RAND_bytes(request->nonce->bytes, 16);
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authNonce = new ByteArray(request->nonce.get());
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sendRequestData(request, true);
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#endif
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}
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void Handshake::cleanupHandshake() {
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handshakeState = 0;
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if (handshakeRequest != nullptr) {
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delete handshakeRequest;
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handshakeRequest = nullptr;
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}
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if (handshakeServerSalt != nullptr) {
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delete handshakeServerSalt;
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handshakeServerSalt = nullptr;
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}
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if (authNonce != nullptr) {
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delete authNonce;
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authNonce = nullptr;
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}
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if (authServerNonce != nullptr) {
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delete authServerNonce;
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authServerNonce = nullptr;
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}
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if (authNewNonce != nullptr) {
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delete authNewNonce;
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authNewNonce = nullptr;
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}
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if (handshakeAuthKey != nullptr) {
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delete handshakeAuthKey;
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handshakeAuthKey = nullptr;
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}
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if (authKeyTempPending != nullptr) {
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delete authKeyTempPending;
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authKeyTempPending = nullptr;
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}
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if (authKeyPendingMessageId != 0 || authKeyPendingRequestId != 0) {
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ConnectionsManager::getInstance(currentDatacenter->instanceNum).cancelRequestInternal(authKeyPendingRequestId, authKeyPendingMessageId, false, false);
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authKeyPendingMessageId = 0;
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authKeyPendingRequestId = 0;
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}
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authKeyTempPendingId = 0;
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}
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inline Connection *Handshake::getConnection() {
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return handshakeType == HandshakeTypeMediaTemp ? currentDatacenter->createGenericMediaConnection() : currentDatacenter->createGenericConnection();
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}
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void Handshake::sendRequestData(TLObject *object, bool important) {
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uint32_t messageLength = object->getObjectSize();
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NativeByteBuffer *buffer = BuffersStorage::getInstance().getFreeBuffer(20 + messageLength);
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buffer->writeInt64(0);
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buffer->writeInt64(ConnectionsManager::getInstance(currentDatacenter->instanceNum).generateMessageId());
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buffer->writeInt32(messageLength);
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object->serializeToStream(buffer);
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getConnection()->sendData(buffer, false, false);
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if (important) {
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if (handshakeRequest != object) {
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if (handshakeRequest != nullptr) {
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delete handshakeRequest;
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}
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handshakeRequest = object;
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}
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} else {
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delete object;
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}
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}
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inline uint64_t gcd(uint64_t a, uint64_t b) {
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while (a != 0 && b != 0) {
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while ((b & 1) == 0) {
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b >>= 1;
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}
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while ((a & 1) == 0) {
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a >>= 1;
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}
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if (a > b) {
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a -= b;
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} else {
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b -= a;
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}
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}
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return b == 0 ? a : b;
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}
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inline bool factorizeValue(uint64_t what, uint32_t &p, uint32_t &q) {
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int32_t it = 0, i, j;
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uint64_t g = 0;
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for (i = 0; i < 3 || it < 1000; i++) {
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uint64_t t = ((lrand48() & 15) + 17) % what;
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uint64_t x = (long long) lrand48() % (what - 1) + 1, y = x;
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int32_t lim = 1 << (i + 18);
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for (j = 1; j < lim; j++) {
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++it;
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uint64_t a = x, b = x, c = t;
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while (b) {
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if (b & 1) {
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c += a;
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if (c >= what) {
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c -= what;
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}
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}
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a += a;
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if (a >= what) {
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a -= what;
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}
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b >>= 1;
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}
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x = c;
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uint64_t z = x < y ? what + x - y : x - y;
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g = gcd(z, what);
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if (g != 1) {
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break;
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}
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if (!(j & (j - 1))) {
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y = x;
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}
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}
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if (g > 1 && g < what) {
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break;
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}
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}
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if (g > 1 && g < what) {
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p = (uint32_t) g;
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q = (uint32_t) (what / g);
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if (p > q) {
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uint32_t tmp = p;
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p = q;
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q = tmp;
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}
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return true;
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} else {
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if (LOGS_ENABLED) DEBUG_E("factorization failed for %" PRIu64, what);
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p = 0;
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q = 0;
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return false;
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}
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}
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inline bool check_prime(BIGNUM *p) {
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int result = 0;
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if (!BN_primality_test(&result, p, BN_prime_checks, bnContext, 0, NULL)) {
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if (LOGS_ENABLED) DEBUG_E("OpenSSL error at BN_primality_test");
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return false;
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}
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return result != 0;
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}
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inline bool isGoodPrime(BIGNUM *p, uint32_t g) {
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if (g < 2 || g > 7 || BN_num_bits(p) != 2048) {
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return false;
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}
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BIGNUM *t = BN_new();
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BIGNUM *dh_g = BN_new();
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if (!BN_set_word(dh_g, 4 * g)) {
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if (LOGS_ENABLED) DEBUG_E("OpenSSL error at BN_set_word(dh_g, 4 * g)");
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BN_free(t);
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BN_free(dh_g);
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return false;
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}
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if (!BN_mod(t, p, dh_g, bnContext)) {
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if (LOGS_ENABLED) DEBUG_E("OpenSSL error at BN_mod");
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BN_free(t);
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BN_free(dh_g);
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return false;
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}
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uint64_t x = BN_get_word(t);
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if (x >= 4 * g) {
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if (LOGS_ENABLED) DEBUG_E("OpenSSL error at BN_get_word");
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BN_free(t);
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BN_free(dh_g);
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return false;
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}
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BN_free(dh_g);
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bool result = true;
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switch (g) {
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case 2:
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if (x != 7) {
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result = false;
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}
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break;
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case 3:
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if (x % 3 != 2) {
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result = false;
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}
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break;
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case 5:
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if (x % 5 != 1 && x % 5 != 4) {
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result = false;
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}
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break;
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case 6:
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if (x != 19 && x != 23) {
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result = false;
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}
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break;
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case 7:
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if (x % 7 != 3 && x % 7 != 5 && x % 7 != 6) {
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result = false;
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}
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break;
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default:
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break;
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}
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char *prime = BN_bn2hex(p);
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static const char *goodPrime = "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";
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if (!strcasecmp(prime, goodPrime)) {
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OPENSSL_free(prime);
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BN_free(t);
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return true;
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}
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OPENSSL_free(prime);
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if (!result || !check_prime(p)) {
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BN_free(t);
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return false;
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}
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BIGNUM *b = BN_new();
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if (!BN_set_word(b, 2)) {
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if (LOGS_ENABLED) DEBUG_E("OpenSSL error at BN_set_word(b, 2)");
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BN_free(b);
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BN_free(t);
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return false;
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}
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if (!BN_div(t, 0, p, b, bnContext)) {
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if (LOGS_ENABLED) DEBUG_E("OpenSSL error at BN_div");
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BN_free(b);
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BN_free(t);
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return false;
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}
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if (!check_prime(t)) {
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result = false;
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}
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BN_free(b);
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BN_free(t);
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return result;
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}
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inline bool isGoodGaAndGb(BIGNUM *g_a, BIGNUM *p) {
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if (BN_num_bytes(g_a) > 256 || BN_num_bits(g_a) < 2048 - 64 || BN_cmp(p, g_a) <= 0) {
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return false;
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}
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BIGNUM *dif = BN_new();
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BN_sub(dif, p, g_a);
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if (BN_num_bits(dif) < 2048 - 64) {
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BN_free(dif);
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return false;
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}
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BN_free(dif);
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return true;
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}
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void Handshake::processHandshakeResponse(TLObject *message, int64_t messageId) {
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if (handshakeState == 0) {
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return;
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}
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const std::type_info &typeInfo = typeid(*message);
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if (typeInfo == typeid(TL_resPQ)) {
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if (handshakeState != 1) {
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sendAckRequest(messageId);
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return;
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}
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handshakeState = 2;
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TL_resPQ *result = (TL_resPQ *) message;
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if (authNonce->isEqualTo(result->nonce.get())) {
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std::string key;
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int64_t keyFingerprint = 0;
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size_t count1 = result->server_public_key_fingerprints.size();
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if (currentDatacenter->isCdnDatacenter) {
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std::map<int32_t, uint64_t>::iterator iter = cdnPublicKeysFingerprints.find(currentDatacenter->datacenterId);
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if (iter != cdnPublicKeysFingerprints.end()) {
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for (uint32_t a = 0; a < count1; a++) {
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if ((uint64_t) result->server_public_key_fingerprints[a] == iter->second) {
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keyFingerprint = iter->second;
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key = cdnPublicKeys[currentDatacenter->datacenterId];
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}
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}
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}
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} else {
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if (serverPublicKeys.empty()) {
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#ifdef USE_OLD_KEYS
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serverPublicKeys.push_back("-----BEGIN RSA PUBLIC KEY-----\n"
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"MIIBCgKCAQEAwVACPi9w23mF3tBkdZz+zwrzKOaaQdr01vAbU4E1pvkfj4sqDsm6\n"
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"lyDONS789sVoD/xCS9Y0hkkC3gtL1tSfTlgCMOOul9lcixlEKzwKENj1Yz/s7daS\n"
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"an9tqw3bfUV/nqgbhGX81v/+7RFAEd+RwFnK7a+XYl9sluzHRyVVaTTveB2GazTw\n"
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"Efzk2DWgkBluml8OREmvfraX3bkHZJTKX4EQSjBbbdJ2ZXIsRrYOXfaA+xayEGB+\n"
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"8hdlLmAjbCVfaigxX0CDqWeR1yFL9kwd9P0NsZRPsmoqVwMbMu7mStFai6aIhc3n\n"
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"Slv8kg9qv1m6XHVQY3PnEw+QQtqSIXklHwIDAQAB\n"
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"-----END RSA PUBLIC KEY-----");
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serverPublicKeysFingerprints.push_back(0xc3b42b026ce86b21LL);
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serverPublicKeys.push_back("-----BEGIN RSA PUBLIC KEY-----\n"
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"MIIBCgKCAQEAxq7aeLAqJR20tkQQMfRn+ocfrtMlJsQ2Uksfs7Xcoo77jAid0bRt\n"
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"ksiVmT2HEIJUlRxfABoPBV8wY9zRTUMaMA654pUX41mhyVN+XoerGxFvrs9dF1Ru\n"
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"vCHbI02dM2ppPvyytvvMoefRoL5BTcpAihFgm5xCaakgsJ/tH5oVl74CdhQw8J5L\n"
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"xI/K++KJBUyZ26Uba1632cOiq05JBUW0Z2vWIOk4BLysk7+U9z+SxynKiZR3/xdi\n"
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"XvFKk01R3BHV+GUKM2RYazpS/P8v7eyKhAbKxOdRcFpHLlVwfjyM1VlDQrEZxsMp\n"
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"NTLYXb6Sce1Uov0YtNx5wEowlREH1WOTlwIDAQAB\n"
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"-----END RSA PUBLIC KEY-----");
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serverPublicKeysFingerprints.push_back(0x9a996a1db11c729bLL);
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serverPublicKeys.push_back("-----BEGIN RSA PUBLIC KEY-----\n"
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"MIIBCgKCAQEAsQZnSWVZNfClk29RcDTJQ76n8zZaiTGuUsi8sUhW8AS4PSbPKDm+\n"
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"DyJgdHDWdIF3HBzl7DHeFrILuqTs0vfS7Pa2NW8nUBwiaYQmPtwEa4n7bTmBVGsB\n"
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"1700/tz8wQWOLUlL2nMv+BPlDhxq4kmJCyJfgrIrHlX8sGPcPA4Y6Rwo0MSqYn3s\n"
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"g1Pu5gOKlaT9HKmE6wn5Sut6IiBjWozrRQ6n5h2RXNtO7O2qCDqjgB2vBxhV7B+z\n"
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"hRbLbCmW0tYMDsvPpX5M8fsO05svN+lKtCAuz1leFns8piZpptpSCFn7bWxiA9/f\n"
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"x5x17D7pfah3Sy2pA+NDXyzSlGcKdaUmwQIDAQAB\n"
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"-----END RSA PUBLIC KEY-----");
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serverPublicKeysFingerprints.push_back(0xb05b2a6f70cdea78LL);
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serverPublicKeys.push_back("-----BEGIN RSA PUBLIC KEY-----\n"
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"MIIBCgKCAQEAwqjFW0pi4reKGbkc9pK83Eunwj/k0G8ZTioMMPbZmW99GivMibwa\n"
|
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"xDM9RDWabEMyUtGoQC2ZcDeLWRK3W8jMP6dnEKAlvLkDLfC4fXYHzFO5KHEqF06i\n"
|
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"qAqBdmI1iBGdQv/OQCBcbXIWCGDY2AsiqLhlGQfPOI7/vvKc188rTriocgUtoTUc\n"
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"/n/sIUzkgwTqRyvWYynWARWzQg0I9olLBBC2q5RQJJlnYXZwyTL3y9tdb7zOHkks\n"
|
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"WV9IMQmZmyZh/N7sMbGWQpt4NMchGpPGeJ2e5gHBjDnlIf2p1yZOYeUYrdbwcS0t\n"
|
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"UiggS4UeE8TzIuXFQxw7fzEIlmhIaq3FnwIDAQAB\n"
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"-----END RSA PUBLIC KEY-----");
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serverPublicKeysFingerprints.push_back(0x71e025b6c76033e3LL);
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#endif
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serverPublicKeys.push_back("-----BEGIN RSA PUBLIC KEY-----\n"
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"MIIBCgKCAQEAruw2yP/BCcsJliRoW5eBVBVle9dtjJw+OYED160Wybum9SXtBBLX\n"
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"riwt4rROd9csv0t0OHCaTmRqBcQ0J8fxhN6/cpR1GWgOZRUAiQxoMnlt0R93LCX/\n"
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"j1dnVa/gVbCjdSxpbrfY2g2L4frzjJvdl84Kd9ORYjDEAyFnEA7dD556OptgLQQ2\n"
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"e2iVNq8NZLYTzLp5YpOdO1doK+ttrltggTCy5SrKeLoCPPbOgGsdxJxyz5KKcZnS\n"
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"Lj16yE5HvJQn0CNpRdENvRUXe6tBP78O39oJ8BTHp9oIjd6XWXAsp2CvK45Ol8wF\n"
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"XGF710w9lwCGNbmNxNYhtIkdqfsEcwR5JwIDAQAB\n"
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"-----END RSA PUBLIC KEY-----");
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serverPublicKeysFingerprints.push_back(0xbc35f3509f7b7a5LL);
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serverPublicKeys.push_back("-----BEGIN RSA PUBLIC KEY-----\n"
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"MIIBCgKCAQEAvfLHfYH2r9R70w8prHblWt/nDkh+XkgpflqQVcnAfSuTtO05lNPs\n"
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"pQmL8Y2XjVT4t8cT6xAkdgfmmvnvRPOOKPi0OfJXoRVylFzAQG/j83u5K3kRLbae\n"
|
|
"7fLccVhKZhY46lvsueI1hQdLgNV9n1cQ3TDS2pQOCtovG4eDl9wacrXOJTG2990V\n"
|
|
"jgnIKNA0UMoP+KF03qzryqIt3oTvZq03DyWdGK+AZjgBLaDKSnC6qD2cFY81UryR\n"
|
|
"WOab8zKkWAnhw2kFpcqhI0jdV5QaSCExvnsjVaX0Y1N0870931/5Jb9ICe4nweZ9\n"
|
|
"kSDF/gip3kWLG0o8XQpChDfyvsqB9OLV/wIDAQAB\n"
|
|
"-----END RSA PUBLIC KEY-----");
|
|
serverPublicKeysFingerprints.push_back(0x15ae5fa8b5529542LL);
|
|
|
|
serverPublicKeys.push_back("-----BEGIN RSA PUBLIC KEY-----\n"
|
|
"MIIBCgKCAQEAs/ditzm+mPND6xkhzwFIz6J/968CtkcSE/7Z2qAJiXbmZ3UDJPGr\n"
|
|
"zqTDHkO30R8VeRM/Kz2f4nR05GIFiITl4bEjvpy7xqRDspJcCFIOcyXm8abVDhF+\n"
|
|
"th6knSU0yLtNKuQVP6voMrnt9MV1X92LGZQLgdHZbPQz0Z5qIpaKhdyA8DEvWWvS\n"
|
|
"Uwwc+yi1/gGaybwlzZwqXYoPOhwMebzKUk0xW14htcJrRrq+PXXQbRzTMynseCoP\n"
|
|
"Ioke0dtCodbA3qQxQovE16q9zz4Otv2k4j63cz53J+mhkVWAeWxVGI0lltJmWtEY\n"
|
|
"K6er8VqqWot3nqmWMXogrgRLggv/NbbooQIDAQAB\n"
|
|
"-----END RSA PUBLIC KEY-----");
|
|
serverPublicKeysFingerprints.push_back(0xaeae98e13cd7f94fLL);
|
|
|
|
serverPublicKeys.push_back("-----BEGIN RSA PUBLIC KEY-----\n"
|
|
"MIIBCgKCAQEAvmpxVY7ld/8DAjz6F6q05shjg8/4p6047bn6/m8yPy1RBsvIyvuD\n"
|
|
"uGnP/RzPEhzXQ9UJ5Ynmh2XJZgHoE9xbnfxL5BXHplJhMtADXKM9bWB11PU1Eioc\n"
|
|
"3+AXBB8QiNFBn2XI5UkO5hPhbb9mJpjA9Uhw8EdfqJP8QetVsI/xrCEbwEXe0xvi\n"
|
|
"fRLJbY08/Gp66KpQvy7g8w7VB8wlgePexW3pT13Ap6vuC+mQuJPyiHvSxjEKHgqe\n"
|
|
"Pji9NP3tJUFQjcECqcm0yV7/2d0t/pbCm+ZH1sadZspQCEPPrtbkQBlvHb4OLiIW\n"
|
|
"PGHKSMeRFvp3IWcmdJqXahxLCUS1Eh6MAQIDAQAB\n"
|
|
"-----END RSA PUBLIC KEY-----");
|
|
serverPublicKeysFingerprints.push_back(0x5a181b2235057d98LL);
|
|
}
|
|
|
|
size_t count2 = serverPublicKeysFingerprints.size();
|
|
for (uint32_t a = 0; a < count1; a++) {
|
|
for (uint32_t b = 0; b < count2; b++) {
|
|
if ((uint64_t) result->server_public_key_fingerprints[a] == serverPublicKeysFingerprints[b]) {
|
|
keyFingerprint = result->server_public_key_fingerprints[a];
|
|
key = serverPublicKeys[a];
|
|
break;
|
|
}
|
|
}
|
|
if (keyFingerprint != 0) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (keyFingerprint == 0) {
|
|
if (currentDatacenter->isCdnDatacenter) {
|
|
if (LOGS_ENABLED) DEBUG_D("account%u dc%u handshake: can't find valid cdn server public key, type = %d", currentDatacenter->instanceNum, currentDatacenter->datacenterId, handshakeType);
|
|
loadCdnConfig(currentDatacenter);
|
|
} else {
|
|
if (LOGS_ENABLED) DEBUG_E("account%u dc%u handshake: can't find valid server public key, type = %d", currentDatacenter->instanceNum, currentDatacenter->datacenterId, handshakeType);
|
|
beginHandshake(false);
|
|
}
|
|
return;
|
|
}
|
|
|
|
authServerNonce = new ByteArray(result->server_nonce.get());
|
|
|
|
uint64_t pq = ((uint64_t) (result->pq->bytes[0] & 0xff) << 56) |
|
|
((uint64_t) (result->pq->bytes[1] & 0xff) << 48) |
|
|
((uint64_t) (result->pq->bytes[2] & 0xff) << 40) |
|
|
((uint64_t) (result->pq->bytes[3] & 0xff) << 32) |
|
|
((uint64_t) (result->pq->bytes[4] & 0xff) << 24) |
|
|
((uint64_t) (result->pq->bytes[5] & 0xff) << 16) |
|
|
((uint64_t) (result->pq->bytes[6] & 0xff) << 8) |
|
|
((uint64_t) (result->pq->bytes[7] & 0xff));
|
|
uint32_t p, q;
|
|
if (!factorizeValue(pq, p, q)) {
|
|
beginHandshake(false);
|
|
return;
|
|
}
|
|
|
|
TL_req_DH_params *request = new TL_req_DH_params();
|
|
request->nonce = std::unique_ptr<ByteArray>(new ByteArray(authNonce));
|
|
request->server_nonce = std::unique_ptr<ByteArray>(new ByteArray(authServerNonce));
|
|
request->p = std::unique_ptr<ByteArray>(new ByteArray(4));
|
|
request->p->bytes[3] = (uint8_t) p;
|
|
request->p->bytes[2] = (uint8_t) (p >> 8);
|
|
request->p->bytes[1] = (uint8_t) (p >> 16);
|
|
request->p->bytes[0] = (uint8_t) (p >> 24);
|
|
request->q = std::unique_ptr<ByteArray>(new ByteArray(4));
|
|
request->q->bytes[3] = (uint8_t) q;
|
|
request->q->bytes[2] = (uint8_t) (q >> 8);
|
|
request->q->bytes[1] = (uint8_t) (q >> 16);
|
|
request->q->bytes[0] = (uint8_t) (q >> 24);
|
|
request->public_key_fingerprint = keyFingerprint;
|
|
|
|
TLObject *innerData;
|
|
if (handshakeType == HandshakeTypePerm) {
|
|
TL_p_q_inner_data_dc *tl_p_q_inner_data = new TL_p_q_inner_data_dc();
|
|
tl_p_q_inner_data->nonce = std::unique_ptr<ByteArray>(new ByteArray(authNonce));
|
|
tl_p_q_inner_data->server_nonce = std::unique_ptr<ByteArray>(new ByteArray(authServerNonce));
|
|
tl_p_q_inner_data->pq = std::unique_ptr<ByteArray>(new ByteArray(result->pq.get()));
|
|
tl_p_q_inner_data->p = std::unique_ptr<ByteArray>(new ByteArray(request->p.get()));
|
|
tl_p_q_inner_data->q = std::unique_ptr<ByteArray>(new ByteArray(request->q.get()));
|
|
tl_p_q_inner_data->new_nonce = std::unique_ptr<ByteArray>(new ByteArray(32));
|
|
if (ConnectionsManager::getInstance(currentDatacenter->instanceNum).testBackend) {
|
|
tl_p_q_inner_data->dc = 10000 + currentDatacenter->datacenterId;
|
|
} else {
|
|
tl_p_q_inner_data->dc = currentDatacenter->datacenterId;
|
|
}
|
|
RAND_bytes(tl_p_q_inner_data->new_nonce->bytes, 32);
|
|
authNewNonce = new ByteArray(tl_p_q_inner_data->new_nonce.get());
|
|
innerData = tl_p_q_inner_data;
|
|
} else {
|
|
TL_p_q_inner_data_temp_dc *tl_p_q_inner_data_temp = new TL_p_q_inner_data_temp_dc();
|
|
tl_p_q_inner_data_temp->nonce = std::unique_ptr<ByteArray>(new ByteArray(authNonce));
|
|
tl_p_q_inner_data_temp->server_nonce = std::unique_ptr<ByteArray>(new ByteArray(authServerNonce));
|
|
tl_p_q_inner_data_temp->pq = std::unique_ptr<ByteArray>(new ByteArray(result->pq.get()));
|
|
tl_p_q_inner_data_temp->p = std::unique_ptr<ByteArray>(new ByteArray(request->p.get()));
|
|
tl_p_q_inner_data_temp->q = std::unique_ptr<ByteArray>(new ByteArray(request->q.get()));
|
|
tl_p_q_inner_data_temp->new_nonce = std::unique_ptr<ByteArray>(new ByteArray(32));
|
|
if (handshakeType == HandshakeTypeMediaTemp) {
|
|
if (ConnectionsManager::getInstance(currentDatacenter->instanceNum).testBackend) {
|
|
tl_p_q_inner_data_temp->dc = -(10000 + currentDatacenter->datacenterId);
|
|
} else {
|
|
tl_p_q_inner_data_temp->dc = -currentDatacenter->datacenterId;
|
|
}
|
|
} else {
|
|
if (ConnectionsManager::getInstance(currentDatacenter->instanceNum).testBackend) {
|
|
tl_p_q_inner_data_temp->dc = 10000 + currentDatacenter->datacenterId;
|
|
} else {
|
|
tl_p_q_inner_data_temp->dc = currentDatacenter->datacenterId;
|
|
}
|
|
}
|
|
tl_p_q_inner_data_temp->expires_in = TEMP_AUTH_KEY_EXPIRE_TIME;
|
|
RAND_bytes(tl_p_q_inner_data_temp->new_nonce->bytes, 32);
|
|
authNewNonce = new ByteArray(tl_p_q_inner_data_temp->new_nonce.get());
|
|
innerData = tl_p_q_inner_data_temp;
|
|
}
|
|
|
|
uint32_t innerDataSize = innerData->getObjectSize();
|
|
uint32_t additionalSize = innerDataSize + SHA_DIGEST_LENGTH < 255 ? 255 - (innerDataSize + SHA_DIGEST_LENGTH) : 0;
|
|
NativeByteBuffer *innerDataBuffer = BuffersStorage::getInstance().getFreeBuffer(innerDataSize + additionalSize + SHA_DIGEST_LENGTH);
|
|
innerDataBuffer->position(SHA_DIGEST_LENGTH);
|
|
innerData->serializeToStream(innerDataBuffer);
|
|
delete innerData;
|
|
|
|
SHA1(innerDataBuffer->bytes() + SHA_DIGEST_LENGTH, innerDataSize, innerDataBuffer->bytes());
|
|
if (additionalSize != 0) {
|
|
RAND_bytes(innerDataBuffer->bytes() + SHA_DIGEST_LENGTH + innerDataSize, additionalSize);
|
|
}
|
|
|
|
BIO *keyBio = BIO_new(BIO_s_mem());
|
|
BIO_write(keyBio, key.c_str(), (int) key.length());
|
|
RSA *rsaKey = PEM_read_bio_RSAPublicKey(keyBio, NULL, NULL, NULL);
|
|
BIO_free(keyBio);
|
|
if (bnContext == nullptr) {
|
|
bnContext = BN_CTX_new();
|
|
}
|
|
BIGNUM *a = BN_bin2bn(innerDataBuffer->bytes(), innerDataBuffer->limit(), NULL);
|
|
BIGNUM *r = BN_new();
|
|
BN_mod_exp(r, a, rsaKey->e, rsaKey->n, bnContext);
|
|
uint32_t size = BN_num_bytes(r);
|
|
ByteArray *rsaEncryptedData = new ByteArray(size >= 256 ? size : 256);
|
|
size_t resLen = BN_bn2bin(r, rsaEncryptedData->bytes);
|
|
if (256 - resLen > 0) {
|
|
memset(rsaEncryptedData->bytes + resLen, 0, 256 - resLen);
|
|
}
|
|
BN_free(a);
|
|
BN_free(r);
|
|
RSA_free(rsaKey);
|
|
innerDataBuffer->reuse();
|
|
|
|
request->encrypted_data = std::unique_ptr<ByteArray>(rsaEncryptedData);
|
|
|
|
sendAckRequest(messageId);
|
|
sendRequestData(request, true);
|
|
} else {
|
|
if (LOGS_ENABLED) DEBUG_E("account%u dc%u handshake: invalid client nonce, type = %d", currentDatacenter->instanceNum, currentDatacenter->datacenterId, handshakeType);
|
|
beginHandshake(false);
|
|
}
|
|
} else if (dynamic_cast<Server_DH_Params *>(message)) {
|
|
if (typeInfo == typeid(TL_server_DH_params_ok)) {
|
|
if (handshakeState != 2) {
|
|
sendAckRequest(messageId);
|
|
return;
|
|
}
|
|
|
|
handshakeState = 3;
|
|
|
|
TL_server_DH_params_ok *result = (TL_server_DH_params_ok *) message;
|
|
|
|
NativeByteBuffer *tmpAesKeyAndIv = BuffersStorage::getInstance().getFreeBuffer(84);
|
|
|
|
NativeByteBuffer *newNonceAndServerNonce = BuffersStorage::getInstance().getFreeBuffer(authNewNonce->length + authServerNonce->length);
|
|
newNonceAndServerNonce->writeBytes(authNewNonce);
|
|
newNonceAndServerNonce->writeBytes(authServerNonce);
|
|
SHA1(newNonceAndServerNonce->bytes(), newNonceAndServerNonce->limit(), tmpAesKeyAndIv->bytes());
|
|
newNonceAndServerNonce->reuse();
|
|
|
|
NativeByteBuffer *serverNonceAndNewNonce = BuffersStorage::getInstance().getFreeBuffer(authServerNonce->length + authNewNonce->length);
|
|
serverNonceAndNewNonce->writeBytes(authServerNonce);
|
|
serverNonceAndNewNonce->writeBytes(authNewNonce);
|
|
SHA1(serverNonceAndNewNonce->bytes(), serverNonceAndNewNonce->limit(), tmpAesKeyAndIv->bytes() + 20);
|
|
serverNonceAndNewNonce->reuse();
|
|
|
|
NativeByteBuffer *newNonceAndNewNonce = BuffersStorage::getInstance().getFreeBuffer(authNewNonce->length + authNewNonce->length);
|
|
newNonceAndNewNonce->writeBytes(authNewNonce);
|
|
newNonceAndNewNonce->writeBytes(authNewNonce);
|
|
SHA1(newNonceAndNewNonce->bytes(), newNonceAndNewNonce->limit(), tmpAesKeyAndIv->bytes() + 40);
|
|
newNonceAndNewNonce->reuse();
|
|
|
|
memcpy(tmpAesKeyAndIv->bytes() + 60, authNewNonce->bytes, 4);
|
|
Datacenter::aesIgeEncryption(result->encrypted_answer->bytes, tmpAesKeyAndIv->bytes(), tmpAesKeyAndIv->bytes() + 32, false, false, result->encrypted_answer->length);
|
|
|
|
bool hashVerified = false;
|
|
for (uint32_t i = 0; i < 16; i++) {
|
|
SHA1(result->encrypted_answer->bytes + SHA_DIGEST_LENGTH, result->encrypted_answer->length - i - SHA_DIGEST_LENGTH, tmpAesKeyAndIv->bytes() + 64);
|
|
if (!memcmp(tmpAesKeyAndIv->bytes() + 64, result->encrypted_answer->bytes, SHA_DIGEST_LENGTH)) {
|
|
hashVerified = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!hashVerified) {
|
|
if (LOGS_ENABLED) DEBUG_E("account%u dc%u handshake: can't decode DH params, type = %d", currentDatacenter->instanceNum, currentDatacenter->datacenterId, handshakeType);
|
|
beginHandshake(false);
|
|
return;
|
|
}
|
|
|
|
bool error = false;
|
|
NativeByteBuffer *answerWithHash = new NativeByteBuffer(result->encrypted_answer->bytes + SHA_DIGEST_LENGTH, result->encrypted_answer->length - SHA_DIGEST_LENGTH);
|
|
uint32_t constructor = answerWithHash->readUint32(&error);
|
|
TL_server_DH_inner_data *dhInnerData = TL_server_DH_inner_data::TLdeserialize(answerWithHash, constructor, currentDatacenter->instanceNum, error);
|
|
delete answerWithHash;
|
|
|
|
if (error) {
|
|
if (LOGS_ENABLED) DEBUG_E("account%u dc%u handshake: can't parse decoded DH params, type = %d", currentDatacenter->instanceNum, currentDatacenter->datacenterId, handshakeType);
|
|
beginHandshake(false);
|
|
return;
|
|
}
|
|
|
|
if (!authNonce->isEqualTo(dhInnerData->nonce.get())) {
|
|
if (LOGS_ENABLED) DEBUG_E("account%u dc%u handshake: invalid DH nonce, type = %d", currentDatacenter->instanceNum, currentDatacenter->datacenterId, handshakeType);
|
|
beginHandshake(false);
|
|
return;
|
|
}
|
|
|
|
if (!authServerNonce->isEqualTo(dhInnerData->server_nonce.get())) {
|
|
if (LOGS_ENABLED) DEBUG_E("account%u dc%u handshake: invalid DH server nonce, type = %d", currentDatacenter->instanceNum, currentDatacenter->datacenterId, handshakeType);
|
|
beginHandshake(false);
|
|
return;
|
|
}
|
|
|
|
BIGNUM *p = BN_bin2bn(dhInnerData->dh_prime->bytes, dhInnerData->dh_prime->length, NULL);
|
|
if (p == nullptr) {
|
|
if (LOGS_ENABLED) DEBUG_E("can't allocate BIGNUM p");
|
|
exit(1);
|
|
}
|
|
if (!isGoodPrime(p, dhInnerData->g)) {
|
|
if (LOGS_ENABLED) DEBUG_E("account%u dc%u handshake: bad prime, type = %d", currentDatacenter->instanceNum, currentDatacenter->datacenterId, handshakeType);
|
|
beginHandshake(false);
|
|
BN_free(p);
|
|
return;
|
|
}
|
|
|
|
BIGNUM *g_a = BN_new();
|
|
if (g_a == nullptr) {
|
|
if (LOGS_ENABLED) DEBUG_E("can't allocate BIGNUM g_a");
|
|
exit(1);
|
|
}
|
|
BN_bin2bn(dhInnerData->g_a->bytes, dhInnerData->g_a->length, g_a);
|
|
if (!isGoodGaAndGb(g_a, p)) {
|
|
if (LOGS_ENABLED) DEBUG_E("account%u dc%u handshake: bad prime and g_a, type = %d", currentDatacenter->instanceNum, currentDatacenter->datacenterId, handshakeType);
|
|
beginHandshake(false);
|
|
BN_free(p);
|
|
BN_free(g_a);
|
|
return;
|
|
}
|
|
|
|
BIGNUM *g = BN_new();
|
|
if (g == nullptr) {
|
|
if (LOGS_ENABLED) DEBUG_E("can't allocate BIGNUM g");
|
|
exit(1);
|
|
}
|
|
if (!BN_set_word(g, dhInnerData->g)) {
|
|
if (LOGS_ENABLED) DEBUG_E("OpenSSL error at BN_set_word(g_b, dhInnerData->g)");
|
|
beginHandshake(false);
|
|
BN_free(g);
|
|
BN_free(g_a);
|
|
BN_free(p);
|
|
return;
|
|
}
|
|
thread_local static uint8_t bytes[256];
|
|
RAND_bytes(bytes, 256);
|
|
BIGNUM *b = BN_bin2bn(bytes, 256, NULL);
|
|
if (b == nullptr) {
|
|
if (LOGS_ENABLED) DEBUG_E("can't allocate BIGNUM b");
|
|
exit(1);
|
|
}
|
|
|
|
BIGNUM *g_b = BN_new();
|
|
if (!BN_mod_exp(g_b, g, b, p, bnContext)) {
|
|
if (LOGS_ENABLED) DEBUG_E("OpenSSL error at BN_mod_exp(g_b, g, b, p, bnContext)");
|
|
beginHandshake(false);
|
|
BN_free(g);
|
|
BN_free(g_a);
|
|
BN_free(g_b);
|
|
BN_free(b);
|
|
BN_free(p);
|
|
return;
|
|
}
|
|
|
|
TL_client_DH_inner_data *clientInnerData = new TL_client_DH_inner_data();
|
|
clientInnerData->g_b = std::unique_ptr<ByteArray>(new ByteArray(BN_num_bytes(g_b)));
|
|
BN_bn2bin(g_b, clientInnerData->g_b->bytes);
|
|
clientInnerData->nonce = std::unique_ptr<ByteArray>(new ByteArray(authNonce));
|
|
clientInnerData->server_nonce = std::unique_ptr<ByteArray>(new ByteArray(authServerNonce));
|
|
clientInnerData->retry_id = 0;
|
|
BN_free(g_b);
|
|
BN_free(g);
|
|
|
|
BIGNUM *authKeyNum = BN_new();
|
|
BN_mod_exp(authKeyNum, g_a, b, p, bnContext);
|
|
size_t l = BN_num_bytes(authKeyNum);
|
|
handshakeAuthKey = new ByteArray(256);
|
|
BN_bn2bin(authKeyNum, handshakeAuthKey->bytes);
|
|
if (l < 256) {
|
|
memmove(handshakeAuthKey->bytes + 256 - l, handshakeAuthKey->bytes, l);
|
|
memset(handshakeAuthKey->bytes, 0, 256 - l);
|
|
}
|
|
|
|
BN_free(authKeyNum);
|
|
BN_free(g_a);
|
|
BN_free(b);
|
|
BN_free(p);
|
|
|
|
uint32_t clientInnerDataSize = clientInnerData->getObjectSize();
|
|
uint32_t additionalSize = (clientInnerDataSize + SHA_DIGEST_LENGTH) % 16;
|
|
if (additionalSize != 0) {
|
|
additionalSize = 16 - additionalSize;
|
|
}
|
|
NativeByteBuffer *clientInnerDataBuffer = BuffersStorage::getInstance().getFreeBuffer(clientInnerDataSize + additionalSize + SHA_DIGEST_LENGTH);
|
|
clientInnerDataBuffer->position(SHA_DIGEST_LENGTH);
|
|
clientInnerData->serializeToStream(clientInnerDataBuffer);
|
|
delete clientInnerData;
|
|
|
|
SHA1(clientInnerDataBuffer->bytes() + SHA_DIGEST_LENGTH, clientInnerDataSize, clientInnerDataBuffer->bytes());
|
|
|
|
if (additionalSize != 0) {
|
|
RAND_bytes(clientInnerDataBuffer->bytes() + SHA_DIGEST_LENGTH + clientInnerDataSize, additionalSize);
|
|
}
|
|
|
|
TL_set_client_DH_params *setClientDhParams = new TL_set_client_DH_params();
|
|
setClientDhParams->nonce = std::unique_ptr<ByteArray>(new ByteArray(authNonce));
|
|
setClientDhParams->server_nonce = std::unique_ptr<ByteArray>(new ByteArray(authServerNonce));
|
|
Datacenter::aesIgeEncryption(clientInnerDataBuffer->bytes(), tmpAesKeyAndIv->bytes(), tmpAesKeyAndIv->bytes() + 32, true, false, clientInnerDataBuffer->limit());
|
|
setClientDhParams->encrypted_data = std::unique_ptr<ByteArray>(new ByteArray(clientInnerDataBuffer->bytes(), clientInnerDataBuffer->limit()));
|
|
clientInnerDataBuffer->reuse();
|
|
tmpAesKeyAndIv->reuse();
|
|
|
|
sendAckRequest(messageId);
|
|
sendRequestData(setClientDhParams, true);
|
|
|
|
int32_t currentTime = (int32_t) (ConnectionsManager::getInstance(currentDatacenter->instanceNum).getCurrentTimeMillis() / 1000);
|
|
timeDifference = dhInnerData->server_time - currentTime;
|
|
|
|
handshakeServerSalt = new TL_future_salt();
|
|
handshakeServerSalt->valid_since = currentTime + timeDifference - 5;
|
|
handshakeServerSalt->valid_until = handshakeServerSalt->valid_since + 30 * 60;
|
|
for (int32_t a = 7; a >= 0; a--) {
|
|
handshakeServerSalt->salt <<= 8;
|
|
handshakeServerSalt->salt |= (authNewNonce->bytes[a] ^ authServerNonce->bytes[a]);
|
|
}
|
|
} else {
|
|
if (LOGS_ENABLED) DEBUG_E("account%u dc%u handshake: can't set DH params, type = %d", currentDatacenter->instanceNum, currentDatacenter->datacenterId, handshakeType);
|
|
beginHandshake(false);
|
|
}
|
|
} else if (dynamic_cast<Set_client_DH_params_answer *>(message)) {
|
|
if (handshakeState != 3) {
|
|
sendAckRequest(messageId);
|
|
return;
|
|
}
|
|
|
|
handshakeState = 4;
|
|
|
|
Set_client_DH_params_answer *result = (Set_client_DH_params_answer *) message;
|
|
|
|
if (!authNonce->isEqualTo(result->nonce.get())) {
|
|
if (LOGS_ENABLED) DEBUG_E("account%u dc%u handshake: invalid DH answer nonce, type = %d", currentDatacenter->instanceNum, currentDatacenter->datacenterId, handshakeType);
|
|
beginHandshake(false);
|
|
return;
|
|
}
|
|
if (!authServerNonce->isEqualTo(result->server_nonce.get())) {
|
|
if (LOGS_ENABLED) DEBUG_E("account%u dc%u handshake: invalid DH answer server nonce, type = %d", currentDatacenter->instanceNum, currentDatacenter->datacenterId, handshakeType);
|
|
beginHandshake(false);
|
|
return;
|
|
}
|
|
|
|
sendAckRequest(messageId);
|
|
|
|
uint32_t authKeyAuxHashLength = authNewNonce->length + SHA_DIGEST_LENGTH + 1;
|
|
NativeByteBuffer *authKeyAuxHashBuffer = BuffersStorage::getInstance().getFreeBuffer(authKeyAuxHashLength + SHA_DIGEST_LENGTH);
|
|
authKeyAuxHashBuffer->writeBytes(authNewNonce);
|
|
SHA1(handshakeAuthKey->bytes, handshakeAuthKey->length, authKeyAuxHashBuffer->bytes() + authNewNonce->length + 1);
|
|
|
|
if (typeInfo == typeid(TL_dh_gen_ok)) {
|
|
authKeyAuxHashBuffer->writeByte(1);
|
|
SHA1(authKeyAuxHashBuffer->bytes(), authKeyAuxHashLength - 12, authKeyAuxHashBuffer->bytes() + authKeyAuxHashLength);
|
|
|
|
if (memcmp(result->new_nonce_hash1->bytes, authKeyAuxHashBuffer->bytes() + authKeyAuxHashLength + SHA_DIGEST_LENGTH - 16, 16)) {
|
|
if (LOGS_ENABLED) DEBUG_E("account%u dc%u handshake: invalid DH answer nonce hash 1, type = %d", currentDatacenter->instanceNum, currentDatacenter->datacenterId, handshakeType);
|
|
authKeyAuxHashBuffer->reuse();
|
|
beginHandshake(false);
|
|
} else {
|
|
if (LOGS_ENABLED) DEBUG_D("account%u dc%u handshake: completed, time difference = %d, type = %d", currentDatacenter->instanceNum, currentDatacenter->datacenterId, timeDifference, handshakeType);
|
|
authKeyAuxHashBuffer->position(authNewNonce->length + 1 + 12);
|
|
authKeyTempPendingId = authKeyAuxHashBuffer->readInt64(nullptr);
|
|
authKeyAuxHashBuffer->reuse();
|
|
|
|
if (handshakeRequest != nullptr) {
|
|
delete handshakeRequest;
|
|
handshakeRequest = nullptr;
|
|
}
|
|
|
|
std::unique_ptr<TL_future_salt> salt = std::unique_ptr<TL_future_salt>(handshakeServerSalt);
|
|
currentDatacenter->clearServerSalts(handshakeType == HandshakeTypeMediaTemp);
|
|
currentDatacenter->addServerSalt(salt, handshakeType == HandshakeTypeMediaTemp);
|
|
handshakeServerSalt = nullptr;
|
|
|
|
if (handshakeType == HandshakeTypePerm) {
|
|
ConnectionsManager::getInstance(currentDatacenter->instanceNum).scheduleTask([&] {
|
|
ByteArray *authKey = handshakeAuthKey;
|
|
handshakeAuthKey = nullptr;
|
|
delegate->onHandshakeComplete(this, authKeyTempPendingId, authKey, timeDifference);
|
|
});
|
|
} else {
|
|
authKeyTempPending = handshakeAuthKey;
|
|
handshakeAuthKey = nullptr;
|
|
|
|
Connection *connection = getConnection();
|
|
|
|
TL_auth_bindTempAuthKey *request = new TL_auth_bindTempAuthKey();
|
|
request->initFunc = [&, request, connection](int64_t messageId) {
|
|
TL_bind_auth_key_inner *inner = new TL_bind_auth_key_inner();
|
|
inner->expires_at = ConnectionsManager::getInstance(currentDatacenter->instanceNum).getCurrentTime() + timeDifference + TEMP_AUTH_KEY_EXPIRE_TIME;
|
|
inner->perm_auth_key_id = currentDatacenter->authKeyPermId;
|
|
inner->temp_auth_key_id = authKeyTempPendingId;
|
|
RAND_bytes((uint8_t *) &inner->nonce, 8);
|
|
inner->temp_session_id = connection->getSessionId();
|
|
|
|
NetworkMessage *networkMessage = new NetworkMessage();
|
|
networkMessage->message = std::unique_ptr<TL_message>(new TL_message());
|
|
networkMessage->message->msg_id = authKeyPendingMessageId = messageId;
|
|
networkMessage->message->bytes = inner->getObjectSize();
|
|
networkMessage->message->body = std::unique_ptr<TLObject>(inner);
|
|
networkMessage->message->seqno = 0;
|
|
|
|
std::vector<std::unique_ptr<NetworkMessage>> array;
|
|
array.push_back(std::unique_ptr<NetworkMessage>(networkMessage));
|
|
|
|
request->perm_auth_key_id = inner->perm_auth_key_id;
|
|
request->nonce = inner->nonce;
|
|
request->expires_at = inner->expires_at;
|
|
request->encrypted_message = currentDatacenter->createRequestsData(array, nullptr, connection, true);
|
|
};
|
|
|
|
authKeyPendingRequestId = ConnectionsManager::getInstance(currentDatacenter->instanceNum).sendRequest(request, [&](TLObject *response, TL_error *error, int32_t networkType) {
|
|
authKeyPendingMessageId = 0;
|
|
authKeyPendingRequestId = 0;
|
|
if (response != nullptr && typeid(*response) == typeid(TL_boolTrue)) {
|
|
if (LOGS_ENABLED) DEBUG_D("account%u dc%u handshake: bind completed", currentDatacenter->instanceNum, currentDatacenter->datacenterId);
|
|
ConnectionsManager::getInstance(currentDatacenter->instanceNum).scheduleTask([&] {
|
|
ByteArray *authKey = authKeyTempPending;
|
|
authKeyTempPending = nullptr;
|
|
delegate->onHandshakeComplete(this, authKeyTempPendingId, authKey, timeDifference);
|
|
});
|
|
} else if (error == nullptr || error->code != 400 || error->text.find("ENCRYPTED_MESSAGE_INVALID") == std::string::npos) {
|
|
ConnectionsManager::getInstance(currentDatacenter->instanceNum).scheduleTask([&] {
|
|
beginHandshake(true);
|
|
});
|
|
}
|
|
}, nullptr, RequestFlagWithoutLogin | RequestFlagEnableUnauthorized | RequestFlagUseUnboundKey, currentDatacenter->datacenterId, connection->getConnectionType(), true, 0);
|
|
}
|
|
}
|
|
} else if (typeInfo == typeid(TL_dh_gen_retry)) {
|
|
authKeyAuxHashBuffer->writeByte(2);
|
|
SHA1(authKeyAuxHashBuffer->bytes(), authKeyAuxHashLength - 12, authKeyAuxHashBuffer->bytes() + authKeyAuxHashLength);
|
|
|
|
if (memcmp(result->new_nonce_hash2->bytes, authKeyAuxHashBuffer->bytes() + authKeyAuxHashLength + SHA_DIGEST_LENGTH - 16, 16)) {
|
|
if (LOGS_ENABLED) DEBUG_E("account%u dc%u handshake: invalid DH answer nonce hash 2, type = %d", currentDatacenter->instanceNum, currentDatacenter->datacenterId, handshakeType);
|
|
beginHandshake(false);
|
|
} else {
|
|
if (LOGS_ENABLED) DEBUG_D("account%u dc%u handshake: retry DH, type = %d", currentDatacenter->instanceNum, currentDatacenter->datacenterId, handshakeType);
|
|
beginHandshake(false);
|
|
}
|
|
authKeyAuxHashBuffer->reuse();
|
|
} else if (typeInfo == typeid(TL_dh_gen_fail)) {
|
|
authKeyAuxHashBuffer->writeByte(3);
|
|
SHA1(authKeyAuxHashBuffer->bytes(), authKeyAuxHashLength - 12, authKeyAuxHashBuffer->bytes() + authKeyAuxHashLength);
|
|
|
|
if (memcmp(result->new_nonce_hash3->bytes, authKeyAuxHashBuffer->bytes() + authKeyAuxHashLength + SHA_DIGEST_LENGTH - 16, 16)) {
|
|
if (LOGS_ENABLED) DEBUG_E("account%u dc%u handshake: invalid DH answer nonce hash 3, type = %d", currentDatacenter->instanceNum, currentDatacenter->datacenterId, handshakeType);
|
|
beginHandshake(false);
|
|
} else {
|
|
if (LOGS_ENABLED) DEBUG_E("account%u dc%u handshake: server declined DH params, type = %d", currentDatacenter->instanceNum, currentDatacenter->datacenterId, handshakeType);
|
|
beginHandshake(false);
|
|
}
|
|
authKeyAuxHashBuffer->reuse();
|
|
}
|
|
}
|
|
}
|
|
|
|
void Handshake::sendAckRequest(int64_t messageId) {
|
|
TL_msgs_ack *msgsAck = new TL_msgs_ack();
|
|
msgsAck->msg_ids.push_back(messageId);
|
|
sendRequestData(msgsAck, false);
|
|
}
|
|
|
|
TLObject *Handshake::getCurrentHandshakeRequest() {
|
|
return handshakeRequest;
|
|
}
|
|
|
|
void Handshake::saveCdnConfigInternal(NativeByteBuffer *buffer) {
|
|
buffer->writeInt32(1);
|
|
buffer->writeInt32((int32_t) cdnPublicKeys.size());
|
|
for (std::map<int32_t, std::string>::iterator iter = cdnPublicKeys.begin(); iter != cdnPublicKeys.end(); iter++) {
|
|
buffer->writeInt32(iter->first);
|
|
buffer->writeString(iter->second);
|
|
buffer->writeInt64(cdnPublicKeysFingerprints[iter->first]);
|
|
}
|
|
}
|
|
|
|
void Handshake::saveCdnConfig(Datacenter *datacenter) {
|
|
if (cdnConfig == nullptr) {
|
|
cdnConfig = new Config(datacenter->instanceNum, "cdnkeys.dat");
|
|
}
|
|
thread_local static NativeByteBuffer *sizeCalculator = new NativeByteBuffer(true);
|
|
sizeCalculator->clearCapacity();
|
|
saveCdnConfigInternal(sizeCalculator);
|
|
NativeByteBuffer *buffer = BuffersStorage::getInstance().getFreeBuffer(sizeCalculator->capacity());
|
|
saveCdnConfigInternal(buffer);
|
|
cdnConfig->writeConfig(buffer);
|
|
buffer->reuse();
|
|
}
|
|
|
|
void Handshake::loadCdnConfig(Datacenter *datacenter) {
|
|
if (std::find(cdnWaitingDatacenters.begin(), cdnWaitingDatacenters.end(), datacenter) != cdnWaitingDatacenters.end()) {
|
|
return;
|
|
}
|
|
cdnWaitingDatacenters.push_back(datacenter);
|
|
if (loadingCdnKeys) {
|
|
return;
|
|
}
|
|
if (cdnPublicKeysFingerprints.empty()) {
|
|
if (cdnConfig == nullptr) {
|
|
cdnConfig = new Config(datacenter->instanceNum, "cdnkeys.dat");
|
|
}
|
|
NativeByteBuffer *buffer = cdnConfig->readConfig();
|
|
if (buffer != nullptr) {
|
|
uint32_t version = buffer->readUint32(nullptr);
|
|
if (version >= 1) {
|
|
size_t count = buffer->readUint32(nullptr);
|
|
for (uint32_t a = 0; a < count; a++) {
|
|
int dcId = buffer->readInt32(nullptr);
|
|
cdnPublicKeys[dcId] = buffer->readString(nullptr);
|
|
cdnPublicKeysFingerprints[dcId] = buffer->readUint64(nullptr);
|
|
}
|
|
}
|
|
buffer->reuse();
|
|
if (!cdnPublicKeysFingerprints.empty()) {
|
|
size_t count = cdnWaitingDatacenters.size();
|
|
for (uint32_t a = 0; a < count; a++) {
|
|
cdnWaitingDatacenters[a]->beginHandshake(HandshakeTypeCurrent, false);
|
|
}
|
|
cdnWaitingDatacenters.clear();
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
loadingCdnKeys = true;
|
|
TL_help_getCdnConfig *request = new TL_help_getCdnConfig();
|
|
|
|
ConnectionsManager::getInstance(datacenter->instanceNum).sendRequest(request, [&, datacenter](TLObject *response, TL_error *error, int32_t networkType) {
|
|
if (response != nullptr) {
|
|
TL_cdnConfig *config = (TL_cdnConfig *) response;
|
|
size_t count = config->public_keys.size();
|
|
BIO *keyBio = BIO_new(BIO_s_mem());
|
|
NativeByteBuffer *buffer = BuffersStorage::getInstance().getFreeBuffer(1024);
|
|
thread_local static uint8_t sha1Buffer[20];
|
|
for (uint32_t a = 0; a < count; a++) {
|
|
TL_cdnPublicKey *publicKey = config->public_keys[a].get();
|
|
cdnPublicKeys[publicKey->dc_id] = publicKey->public_key;
|
|
|
|
BIO_write(keyBio, publicKey->public_key.c_str(), (int) publicKey->public_key.length());
|
|
RSA *rsaKey = PEM_read_bio_RSAPublicKey(keyBio, NULL, NULL, NULL);
|
|
|
|
int nBytes = BN_num_bytes(rsaKey->n);
|
|
int eBytes = BN_num_bytes(rsaKey->e);
|
|
std::string nStr(nBytes, 0), eStr(eBytes, 0);
|
|
BN_bn2bin(rsaKey->n, (uint8_t *)&nStr[0]);
|
|
BN_bn2bin(rsaKey->e, (uint8_t *)&eStr[0]);
|
|
buffer->writeString(nStr);
|
|
buffer->writeString(eStr);
|
|
SHA1(buffer->bytes(), buffer->position(), sha1Buffer);
|
|
cdnPublicKeysFingerprints[publicKey->dc_id] = ((uint64_t) sha1Buffer[19]) << 56 |
|
|
((uint64_t) sha1Buffer[18]) << 48 |
|
|
((uint64_t) sha1Buffer[17]) << 40 |
|
|
((uint64_t) sha1Buffer[16]) << 32 |
|
|
((uint64_t) sha1Buffer[15]) << 24 |
|
|
((uint64_t) sha1Buffer[14]) << 16 |
|
|
((uint64_t) sha1Buffer[13]) << 8 |
|
|
((uint64_t) sha1Buffer[12]);
|
|
RSA_free(rsaKey);
|
|
if (a != count - 1) {
|
|
buffer->position(0);
|
|
BIO_reset(keyBio);
|
|
}
|
|
}
|
|
buffer->reuse();
|
|
BIO_free(keyBio);
|
|
count = cdnWaitingDatacenters.size();
|
|
for (uint32_t a = 0; a < count; a++) {
|
|
cdnWaitingDatacenters[a]->beginHandshake(HandshakeTypeCurrent, false);
|
|
}
|
|
cdnWaitingDatacenters.clear();
|
|
saveCdnConfig(datacenter);
|
|
}
|
|
loadingCdnKeys = false;
|
|
}, nullptr, RequestFlagEnableUnauthorized | RequestFlagWithoutLogin, DEFAULT_DATACENTER_ID, ConnectionTypeGeneric, true);
|
|
}
|
|
|
|
HandshakeType Handshake::getType() {
|
|
return handshakeType;
|
|
}
|
|
|
|
ByteArray *Handshake::getPendingAuthKey() {
|
|
return authKeyTempPending;
|
|
}
|
|
|
|
int64_t Handshake::getPendingAuthKeyId() {
|
|
return authKeyTempPendingId;
|
|
}
|
|
|
|
void Handshake::onHandshakeConnectionClosed() {
|
|
if (handshakeState == 0) {
|
|
return;
|
|
}
|
|
needResendData = true;
|
|
}
|
|
|
|
void Handshake::onHandshakeConnectionConnected() {
|
|
if (handshakeState == 0 || !needResendData) {
|
|
return;
|
|
}
|
|
beginHandshake(false);
|
|
}
|