diff options
Diffstat (limited to 'src/ClientHandle.cpp')
| -rw-r--r-- | src/ClientHandle.cpp | 123 |
1 files changed, 64 insertions, 59 deletions
diff --git a/src/ClientHandle.cpp b/src/ClientHandle.cpp index 870568cdf..94c9f5f71 100644 --- a/src/ClientHandle.cpp +++ b/src/ClientHandle.cpp @@ -52,6 +52,9 @@ /** Maximum number of explosions to send this tick, server will start dropping if exceeded */ #define MAX_EXPLOSIONS_PER_TICK 20 +/** Maximum number of block change interactions a player can perform per tick - exceeding this causes a kick */ +#define MAX_BLOCK_CHANGE_INTERACTIONS 20 + /** How many ticks before the socket is closed after the client is destroyed (#31) */ static const int TICKS_BEFORE_CLOSE = 20; @@ -96,8 +99,8 @@ cClientHandle::cClientHandle(const cSocket * a_Socket, int a_ViewDistance) : m_ShouldCheckDownloaded(false), m_NumExplosionsThisTick(0), m_UniqueID(0), - m_Locale("en_GB"), - m_HasSentPlayerChunk(false) + m_HasSentPlayerChunk(false), + m_Locale("en_GB") { m_Protocol = new cProtocolRecognizer(this); @@ -555,12 +558,25 @@ void cClientHandle::HandlePluginMessage(const AString & a_Channel, const AString } else if (a_Channel == "REGISTER") { + if (HasPluginChannel(a_Channel)) + { + SendPluginMessage("UNREGISTER", a_Channel); + return; // Can't register again if already taken - kinda defeats the point of plugin messaging! + } + RegisterPluginChannels(BreakApartPluginChannels(a_Message)); } else if (a_Channel == "UNREGISTER") { UnregisterPluginChannels(BreakApartPluginChannels(a_Message)); } + else if (!HasPluginChannel(a_Channel)) + { + // Ignore if client sent something but didn't register the channel first + LOGD("Player %s sent a plugin message on channel \"%s\", but didn't REGISTER it first", GetUsername().c_str(), a_Channel.c_str()); + SendPluginMessage("UNREGISTER", a_Channel); + return; + } cPluginManager::Get()->CallHookPluginMessage(*this, a_Channel, a_Message); } @@ -687,6 +703,14 @@ void cClientHandle::HandleLeftClick(int a_BlockX, int a_BlockY, int a_BlockZ, eB a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, a_Status ); + m_NumBlockChangeInteractionsThisTick++; + + if (!CheckBlockInteractionsRate()) + { + Kick("Too many blocks were destroyed per unit time - hacked client?"); + return; + } + cPluginManager * PlgMgr = cRoot::Get()->GetPluginManager(); if (PlgMgr->CallHookPlayerLeftClick(*m_Player, a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, a_Status)) { @@ -694,12 +718,6 @@ void cClientHandle::HandleLeftClick(int a_BlockX, int a_BlockY, int a_BlockZ, eB m_Player->GetWorld()->SendBlockTo(a_BlockX, a_BlockY, a_BlockZ, m_Player); return; } - - if (!CheckBlockInteractionsRate()) - { - // Too many interactions per second, simply ignore. Probably a hacked client, so don't even send bak the block - return; - } switch (a_Status) { @@ -931,7 +949,7 @@ void cClientHandle::HandleRightClick(int a_BlockX, int a_BlockY, int a_BlockZ, e cBlockHandler * BlockHandler = cBlockInfo::GetHandler(BlockType); BlockHandler->OnCancelRightClick(ChunkInterface, *World, m_Player, a_BlockX, a_BlockY, a_BlockZ, a_BlockFace); - if (a_BlockFace > -1) + if (a_BlockFace != BLOCK_FACE_NONE) { AddFaceDirection(a_BlockX, a_BlockY, a_BlockZ, a_BlockFace); World->SendBlockTo(a_BlockX, a_BlockY, a_BlockZ, m_Player); @@ -942,7 +960,7 @@ void cClientHandle::HandleRightClick(int a_BlockX, int a_BlockY, int a_BlockZ, e if (!CheckBlockInteractionsRate()) { - LOGD("Too many block interactions, aborting placement"); + Kick("Too many blocks were placed/interacted with per unit time - hacked client?"); return; } @@ -1453,7 +1471,7 @@ bool cClientHandle::HandleHandshake(const AString & a_Username) -void cClientHandle::HandleEntityAction(int a_EntityID, char a_ActionID) +void cClientHandle::HandleEntityCrouch(int a_EntityID, bool a_IsCrouching) { if (a_EntityID != m_Player->GetUniqueID()) { @@ -1461,35 +1479,37 @@ void cClientHandle::HandleEntityAction(int a_EntityID, char a_ActionID) return; } - switch (a_ActionID) + m_Player->SetCrouch(a_IsCrouching); +} + + + + + +void cClientHandle::HandleEntityLeaveBed(int a_EntityID) +{ + if (a_EntityID != m_Player->GetUniqueID()) { - case 1: // Crouch - { - m_Player->SetCrouch(true); - break; - } - case 2: // Uncrouch - { - m_Player->SetCrouch(false); - break; - } - case 3: // Leave bed - { - m_Player->GetWorld()->BroadcastEntityAnimation(*m_Player, 2); - break; - } - case 4: // Start sprinting - { - m_Player->SetSprint(true); - break; - } - case 5: // Stop sprinting - { - m_Player->SetSprint(false); - SendPlayerMaxSpeed(); - break; - } + // We should only receive entity actions from the entity that is performing the action + return; + } + + m_Player->GetWorld()->BroadcastEntityAnimation(*m_Player, 2); +} + + + + + +void cClientHandle::HandleEntitySprinting(int a_EntityID, bool a_IsSprinting) +{ + if (a_EntityID != m_Player->GetUniqueID()) + { + // We should only receive entity actions from the entity that is performing the action + return; } + + m_Player->SetSprint(a_IsSprinting); } @@ -1619,28 +1639,12 @@ bool cClientHandle::CheckBlockInteractionsRate(void) { ASSERT(m_Player != NULL); ASSERT(m_Player->GetWorld() != NULL); - /* - // TODO: _X 2012_11_01: This needs a total re-thinking and rewriting - int LastActionCnt = m_Player->GetLastBlockActionCnt(); - if ((m_Player->GetWorld()->GetTime() - m_Player->GetLastBlockActionTime()) < 0.1) - { - // Limit the number of block interactions per tick - m_Player->SetLastBlockActionTime(); //Player tried to interact with a block. Reset last block interation time. - m_Player->SetLastBlockActionCnt(LastActionCnt + 1); - if (m_Player->GetLastBlockActionCnt() > MAXBLOCKCHANGEINTERACTIONS) - { - // Kick if more than MAXBLOCKCHANGEINTERACTIONS per tick - LOGWARN("Player %s tried to interact with a block too quickly! (could indicate bot) Was Kicked.", m_Username.c_str()); - Kick("You're a baaaaaad boy!"); - return false; - } - } - else + + if (m_NumBlockChangeInteractionsThisTick > MAX_BLOCK_CHANGE_INTERACTIONS) { - m_Player->SetLastBlockActionCnt(0); // Reset count - m_Player->SetLastBlockActionTime(); // Player tried to interact with a block. Reset last block interation time. + return false; } - */ + return true; } @@ -1713,8 +1717,9 @@ void cClientHandle::Tick(float a_Dt) } } - // Reset explosion counter: + // Reset explosion & block change counters: m_NumExplosionsThisTick = 0; + m_NumBlockChangeInteractionsThisTick = 0; } |