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Breath cheat fix: server side

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Breath is now handled server side. Changing this behaviour required some modifications to core:

* Ignore TOSERVER_BREATH package, marking it as obsolete
* Clients doesn't send the breath to server anymore
* Use PlayerSAO pointer instead of peer_id in Server::SendPlayerBreath to prevent a useless lookup (little perf gain)
* drop a useless static_cast in emergePlayer
This commit is contained in:
Loic Blot 2017-01-01 16:13:01 +01:00
parent a1346c916e
commit 52ba1f867e
13 changed files with 107 additions and 113 deletions
Download patch file Download diff file Expand all files Collapse all files

2
src/network/clientopcodes.cpp
View file

@ -193,7 +193,7 @@ const ServerCommandFactory serverCommandFactoryTable[TOSERVER_NUM_MSG_TYPES] =
null_command_factory, // 0x3f
{ "TOSERVER_REQUEST_MEDIA", 1, true }, // 0x40
{ "TOSERVER_RECEIVED_MEDIA", 1, true }, // 0x41
{ "TOSERVER_BREATH", 0, true }, // 0x42
null_command_factory, // 0x42 old TOSERVER_BREATH. Ignored by servers
{ "TOSERVER_CLIENT_READY", 0, true }, // 0x43
null_command_factory, // 0x44
null_command_factory, // 0x45

6
src/network/networkprotocol.h
View file

@ -138,9 +138,11 @@ with this program; if not, write to the Free Software Foundation, Inc.,
Add nodedef v3 - connected nodeboxes
PROTOCOL_VERSION 28:
CPT2_MESHOPTIONS
PROTOCOL_VERSION 29:
Server doesn't accept TOSERVER_BREATH anymore
*/
#define LATEST_PROTOCOL_VERSION 28
#define LATEST_PROTOCOL_VERSION 29
// Server's supported network protocol range
#define SERVER_PROTOCOL_VERSION_MIN 13
@ -833,7 +835,7 @@ enum ToServerCommand
<no payload data>
*/
TOSERVER_BREATH = 0x42,
TOSERVER_BREATH = 0x42, // Obsolete
/*
u16 breath
*/

2
src/network/serveropcodes.cpp
View file

@ -90,7 +90,7 @@ const ToServerCommandHandler toServerCommandTable[TOSERVER_NUM_MSG_TYPES] =
null_command_handler, // 0x3f
{ "TOSERVER_REQUEST_MEDIA", TOSERVER_STATE_STARTUP, &Server::handleCommand_RequestMedia }, // 0x40
{ "TOSERVER_RECEIVED_MEDIA", TOSERVER_STATE_STARTUP, &Server::handleCommand_ReceivedMedia }, // 0x41
{ "TOSERVER_BREATH", TOSERVER_STATE_INGAME, &Server::handleCommand_Breath }, // 0x42
{ "TOSERVER_BREATH", TOSERVER_STATE_INGAME, &Server::handleCommand_Deprecated }, // 0x42 Old breath model which is now deprecated for anticheating
{ "TOSERVER_CLIENT_READY", TOSERVER_STATE_STARTUP, &Server::handleCommand_ClientReady }, // 0x43
null_command_handler, // 0x44
null_command_handler, // 0x45

40
src/network/serverpackethandler.cpp
View file

@ -1136,46 +1136,6 @@ void Server::handleCommand_Damage(NetworkPacket* pkt)
}
}
void Server::handleCommand_Breath(NetworkPacket* pkt)
{
u16 breath;
*pkt >> breath;
RemotePlayer *player = m_env->getPlayer(pkt->getPeerId());
if (player == NULL) {
errorstream << "Server::ProcessData(): Canceling: "
"No player for peer_id=" << pkt->getPeerId()
<< " disconnecting peer!" << std::endl;
m_con.DisconnectPeer(pkt->getPeerId());
return;
}
PlayerSAO *playersao = player->getPlayerSAO();
if (playersao == NULL) {
errorstream << "Server::ProcessData(): Canceling: "
"No player object for peer_id=" << pkt->getPeerId()
<< " disconnecting peer!" << std::endl;
m_con.DisconnectPeer(pkt->getPeerId());
return;
}
/*
* If player is dead, we don't need to update the breath
* He is dead !
*/
if (playersao->isDead()) {
verbosestream << "TOSERVER_BREATH: " << player->getName()
<< " is dead. Ignoring packet";
return;
}
playersao->setBreath(breath);
SendPlayerBreath(pkt->getPeerId());
}
void Server::handleCommand_Password(NetworkPacket* pkt)
{
if (pkt->getSize() != PASSWORD_SIZE * 2)