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Check the block id returned by BLOCK_RESPONSE

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This commit is contained in:
SChernykh 2022-12-14 14:24:09 +01:00
parent 3902612c4b
commit da12b329be
2 changed files with 22 additions and 19 deletions
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35
src/p2p_server.cpp
View file

@ -1135,7 +1135,7 @@ void P2PServer::download_missing_blocks()
});
if (result) {
++client->m_blockPendingRequests;
client->m_blockPendingRequests.push_back(id);
}
}
}
@ -1188,8 +1188,6 @@ P2PServer::P2PClient::P2PClient()
, m_SoftwareVersion(0)
, m_SoftwareID(0)
, m_pingTime(-1)
, m_blockPendingRequests(0)
, m_chainTipBlockRequest(false)
, m_lastAlive(0)
, m_lastBroadcastTimestamp(0)
, m_lastBlockrequestTimestamp(0)
@ -1238,8 +1236,7 @@ void P2PServer::P2PClient::reset()
m_SoftwareVersion = 0;
m_SoftwareID = 0;
m_pingTime = -1;
m_blockPendingRequests = 0;
m_chainTipBlockRequest = false;
m_blockPendingRequests.clear();
m_lastAlive = 0;
m_lastBroadcastTimestamp = 0;
m_lastBlockrequestTimestamp = 0;
@ -1400,7 +1397,7 @@ bool P2PServer::P2PClient::on_read(char* data, uint32_t size)
break;
case MessageId::BLOCK_RESPONSE:
if (m_blockPendingRequests <= 0) {
if (m_blockPendingRequests.empty()) {
LOGWARN(4, "peer " << log::Gray() << static_cast<char*>(m_addrString) << log::NoColor() << " sent an unexpected BLOCK_RESPONSE");
ban(DEFAULT_BAN_TIME);
server->remove_peer_from_list(this);
@ -1414,8 +1411,10 @@ bool P2PServer::P2PClient::on_read(char* data, uint32_t size)
if (bytes_left >= 1 + sizeof(uint32_t) + block_size) {
bytes_read = 1 + sizeof(uint32_t) + block_size;
--m_blockPendingRequests;
if (!on_block_response(buf + 1 + sizeof(uint32_t), block_size)) {
const hash expected_id = m_blockPendingRequests.front();
m_blockPendingRequests.pop_front();
if (!on_block_response(buf + 1 + sizeof(uint32_t), block_size, expected_id)) {
ban(DEFAULT_BAN_TIME);
server->remove_peer_from_list(this);
return false;
@ -1853,8 +1852,7 @@ void P2PServer::P2PClient::on_after_handshake(uint8_t* &p)
memcpy(p, empty.h, HASH_SIZE);
p += HASH_SIZE;
++m_blockPendingRequests;
m_chainTipBlockRequest = true;
m_blockPendingRequests.push_back(empty);
m_lastBroadcastTimestamp = seconds_since_epoch();
}
@ -1916,7 +1914,7 @@ bool P2PServer::P2PClient::on_block_request(const uint8_t* buf)
});
}
bool P2PServer::P2PClient::on_block_response(const uint8_t* buf, uint32_t size)
bool P2PServer::P2PClient::on_block_response(const uint8_t* buf, uint32_t size, const hash& expected_id)
{
if (!size) {
LOGINFO(5, "peer " << log::Gray() << static_cast<char*>(m_addrString) << log::NoColor() << " sent an empty block response");
@ -1933,10 +1931,11 @@ bool P2PServer::P2PClient::on_block_response(const uint8_t* buf, uint32_t size)
return false;
}
if (m_chainTipBlockRequest) {
m_chainTipBlockRequest = false;
const PoolBlock* block = server->get_block();
const uint64_t peer_height = server->get_block()->m_txinGenHeight;
// Chain tip request
if (expected_id.empty()) {
const uint64_t peer_height = block->m_txinGenHeight;
const uint64_t our_height = server->m_pool->miner_data().height;
if (peer_height + 2 < our_height) {
@ -1949,11 +1948,15 @@ bool P2PServer::P2PClient::on_block_response(const uint8_t* buf, uint32_t size)
server->send_peer_list_request(this, cur_time);
}
}
else if (block->m_sidechainId != expected_id) {
LOGWARN(3, "peer " << static_cast<char*>(m_addrString) << " sent a wrong block: expected " << expected_id << ", got " << block->m_sidechainId);
return false;
}
const SideChain& side_chain = server->m_pool->side_chain();
const uint64_t max_time_delta = side_chain.precalcFinished() ? (side_chain.block_time() * side_chain.chain_window_size() * 4) : 0;
return handle_incoming_block_async(server->get_block(), max_time_delta);
return handle_incoming_block_async(block, max_time_delta);
}
bool P2PServer::P2PClient::on_block_broadcast(const uint8_t* buf, uint32_t size, bool compact)
@ -2352,7 +2355,7 @@ void P2PServer::P2PClient::post_handle_incoming_block(const uint32_t reset_count
return;
}
++m_blockPendingRequests;
m_blockPendingRequests.push_back(id);
}
}

6
src/p2p_server.h
View file

@ -18,6 +18,7 @@
#pragma once
#include "tcp_server.h"
#include <list>
namespace p2pool {
@ -99,7 +100,7 @@ public:
void on_after_handshake(uint8_t* &p);
bool on_listen_port(const uint8_t* buf);
bool on_block_request(const uint8_t* buf);
bool on_block_response(const uint8_t* buf, uint32_t size);
bool on_block_response(const uint8_t* buf, uint32_t size, const hash& expected_id);
bool on_block_broadcast(const uint8_t* buf, uint32_t size, bool compact);
bool on_peer_list_request(const uint8_t* buf);
bool on_peer_list_response(const uint8_t* buf);
@ -135,8 +136,7 @@ public:
int64_t m_pingTime;
int m_blockPendingRequests;
bool m_chainTipBlockRequest;
std::list<hash> m_blockPendingRequests;
uint64_t m_lastAlive;
uint64_t m_lastBroadcastTimestamp;