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p2p: drop peers that spam peer lists

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There's always some people who just want to abuse things
This commit is contained in:
moneromooo-monero 2020-12-04 13:59:51 +00:00
parent 065bb292df
commit 446b3c865b
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GPG key ID: 686F07454D6CEFC3
2 changed files with 6 additions and 0 deletions
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1
src/cryptonote_config.h
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@ -132,6 +132,7 @@
#define P2P_DEFAULT_HANDSHAKE_INTERVAL 60 //secondes #define P2P_DEFAULT_HANDSHAKE_INTERVAL 60 //secondes
#define P2P_DEFAULT_PACKET_MAX_SIZE 50000000 //50000000 bytes maximum packet size #define P2P_DEFAULT_PACKET_MAX_SIZE 50000000 //50000000 bytes maximum packet size
#define P2P_DEFAULT_PEERS_IN_HANDSHAKE 250 #define P2P_DEFAULT_PEERS_IN_HANDSHAKE 250
#define P2P_MAX_PEERS_IN_HANDSHAKE 250
#define P2P_DEFAULT_CONNECTION_TIMEOUT 5000 //5 seconds #define P2P_DEFAULT_CONNECTION_TIMEOUT 5000 //5 seconds
#define P2P_DEFAULT_SOCKS_CONNECT_TIMEOUT 45 // seconds #define P2P_DEFAULT_SOCKS_CONNECT_TIMEOUT 45 // seconds
#define P2P_DEFAULT_PING_CONNECTION_TIMEOUT 2000 //2 seconds #define P2P_DEFAULT_PING_CONNECTION_TIMEOUT 2000 //2 seconds

5
src/p2p/net_node.inl
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@ -2060,6 +2060,11 @@ namespace nodetool
template<class t_payload_net_handler> template<class t_payload_net_handler>
bool node_server<t_payload_net_handler>::handle_remote_peerlist(const std::vector<peerlist_entry>& peerlist, const epee::net_utils::connection_context_base& context) bool node_server<t_payload_net_handler>::handle_remote_peerlist(const std::vector<peerlist_entry>& peerlist, const epee::net_utils::connection_context_base& context)
{ {
if (peerlist.size() > P2P_MAX_PEERS_IN_HANDSHAKE)
{
MWARNING(context << "peer sent " << peerlist.size() << " peers, considered spamming");
return false;
}
std::vector<peerlist_entry> peerlist_ = peerlist; std::vector<peerlist_entry> peerlist_ = peerlist;
if(!sanitize_peerlist(peerlist_)) if(!sanitize_peerlist(peerlist_))
return false; return false;