diff options
Diffstat (limited to 'src/engine/shared/network_server.cpp')
| -rw-r--r-- | src/engine/shared/network_server.cpp | 256 |
1 files changed, 15 insertions, 241 deletions
diff --git a/src/engine/shared/network_server.cpp b/src/engine/shared/network_server.cpp index b4986bf0..1264a4a5 100644 --- a/src/engine/shared/network_server.cpp +++ b/src/engine/shared/network_server.cpp @@ -1,32 +1,14 @@ /* (c) Magnus Auvinen. See licence.txt in the root of the distribution for more information. */ /* If you are missing that file, acquire a complete release at teeworlds.com. */ #include <base/system.h> -#include "network.h" -#define MACRO_LIST_LINK_FIRST(Object, First, Prev, Next) \ - { if(First) First->Prev = Object; \ - Object->Prev = (struct CBan *)0; \ - Object->Next = First; \ - First = Object; } - -#define MACRO_LIST_LINK_AFTER(Object, After, Prev, Next) \ - { Object->Prev = After; \ - Object->Next = After->Next; \ - After->Next = Object; \ - if(Object->Next) \ - Object->Next->Prev = Object; \ - } +#include <engine/console.h> -#define MACRO_LIST_UNLINK(Object, First, Prev, Next) \ - { if(Object->Next) Object->Next->Prev = Object->Prev; \ - if(Object->Prev) Object->Prev->Next = Object->Next; \ - else First = Object->Next; \ - Object->Next = 0; Object->Prev = 0; } +#include "netban.h" +#include "network.h" -#define MACRO_LIST_FIND(Start, Next, Expression) \ - { while(Start && !(Expression)) Start = Start->Next; } -bool CNetServer::Open(NETADDR BindAddr, int MaxClients, int MaxClientsPerIP, int Flags) +bool CNetServer::Open(NETADDR BindAddr, CNetBan *pNetBan, int MaxClients, int MaxClientsPerIP, int Flags) { // zero out the whole structure mem_zero(this, sizeof(*this)); @@ -36,6 +18,8 @@ bool CNetServer::Open(NETADDR BindAddr, int MaxClients, int MaxClientsPerIP, int if(!m_Socket.type) return false; + m_pNetBan = pNetBan; + // clamp clients m_MaxClients = MaxClients; if(m_MaxClients > NET_MAX_CLIENTS) @@ -48,8 +32,6 @@ bool CNetServer::Open(NETADDR BindAddr, int MaxClients, int MaxClientsPerIP, int for(int i = 0; i < NET_MAX_CLIENTS; i++) m_aSlots[i].m_Connection.Init(m_Socket); - BanRemoveAll(); - return true; } @@ -85,181 +67,8 @@ int CNetServer::Drop(int ClientID, const char *pReason) return 0; } -int CNetServer::BanGet(int Index, CBanInfo *pInfo) -{ - CBan *pBan; - for(pBan = m_BanPool_FirstUsed; pBan && Index; pBan = pBan->m_pNext, Index--) - {} - - if(!pBan) - return 0; - *pInfo = pBan->m_Info; - return 1; -} - -int CNetServer::BanNum() -{ - int Count = 0; - CBan *pBan; - for(pBan = m_BanPool_FirstUsed; pBan; pBan = pBan->m_pNext) - Count++; - return Count; -} - -void CNetServer::BanRemoveByObject(CBan *pBan) -{ - int IpHash = (pBan->m_Info.m_Addr.ip[0]+pBan->m_Info.m_Addr.ip[1]+pBan->m_Info.m_Addr.ip[2]+pBan->m_Info.m_Addr.ip[3]+ - pBan->m_Info.m_Addr.ip[4]+pBan->m_Info.m_Addr.ip[5]+pBan->m_Info.m_Addr.ip[6]+pBan->m_Info.m_Addr.ip[7]+ - pBan->m_Info.m_Addr.ip[8]+pBan->m_Info.m_Addr.ip[9]+pBan->m_Info.m_Addr.ip[10]+pBan->m_Info.m_Addr.ip[11]+ - pBan->m_Info.m_Addr.ip[12]+pBan->m_Info.m_Addr.ip[13]+pBan->m_Info.m_Addr.ip[14]+pBan->m_Info.m_Addr.ip[15])&0xff; - char aAddrStr[NETADDR_MAXSTRSIZE]; - net_addr_str(&pBan->m_Info.m_Addr, aAddrStr, sizeof(aAddrStr)); - dbg_msg("netserver", "removing ban on %s", aAddrStr); - MACRO_LIST_UNLINK(pBan, m_BanPool_FirstUsed, m_pPrev, m_pNext); - MACRO_LIST_UNLINK(pBan, m_aBans[IpHash], m_pHashPrev, m_pHashNext); - MACRO_LIST_LINK_FIRST(pBan, m_BanPool_FirstFree, m_pPrev, m_pNext); -} - -int CNetServer::BanRemove(NETADDR Addr) -{ - int IpHash = (Addr.ip[0]+Addr.ip[1]+Addr.ip[2]+Addr.ip[3]+Addr.ip[4]+Addr.ip[5]+Addr.ip[6]+Addr.ip[7]+ - Addr.ip[8]+Addr.ip[9]+Addr.ip[10]+Addr.ip[11]+Addr.ip[12]+Addr.ip[13]+Addr.ip[14]+Addr.ip[15])&0xff; - CBan *pBan = m_aBans[IpHash]; - - MACRO_LIST_FIND(pBan, m_pHashNext, net_addr_comp(&pBan->m_Info.m_Addr, &Addr) == 0); - - if(pBan) - { - BanRemoveByObject(pBan); - return 0; - } - - return -1; -} - -int CNetServer::BanRemoveAll() -{ - // clear bans memory - mem_zero(m_aBans, sizeof(m_aBans)); - mem_zero(m_BanPool, sizeof(m_BanPool)); - m_BanPool_FirstFree = 0; - m_BanPool_FirstUsed = 0; - - // setup all pointers for bans - for(int i = 1; i < NET_SERVER_MAXBANS-1; i++) - { - m_BanPool[i].m_pNext = &m_BanPool[i+1]; - m_BanPool[i].m_pPrev = &m_BanPool[i-1]; - } - - m_BanPool[0].m_pNext = &m_BanPool[1]; - m_BanPool[NET_SERVER_MAXBANS-1].m_pPrev = &m_BanPool[NET_SERVER_MAXBANS-2]; - m_BanPool_FirstFree = &m_BanPool[0]; - - return 0; -} - -int CNetServer::BanAdd(NETADDR Addr, int Seconds, const char *pReason) -{ - int IpHash = (Addr.ip[0]+Addr.ip[1]+Addr.ip[2]+Addr.ip[3]+Addr.ip[4]+Addr.ip[5]+Addr.ip[6]+Addr.ip[7]+ - Addr.ip[8]+Addr.ip[9]+Addr.ip[10]+Addr.ip[11]+Addr.ip[12]+Addr.ip[13]+Addr.ip[14]+Addr.ip[15])&0xff; - int Stamp = -1; - CBan *pBan; - - // remove the port - Addr.port = 0; - - if(Seconds) - Stamp = time_timestamp() + Seconds; - - // search to see if it already exists - pBan = m_aBans[IpHash]; - MACRO_LIST_FIND(pBan, m_pHashNext, net_addr_comp(&pBan->m_Info.m_Addr, &Addr) == 0); - if(pBan) - { - // adjust the ban - pBan->m_Info.m_Expires = Stamp; - return 0; - } - - if(!m_BanPool_FirstFree) - return -1; - - // fetch and clear the new ban - pBan = m_BanPool_FirstFree; - MACRO_LIST_UNLINK(pBan, m_BanPool_FirstFree, m_pPrev, m_pNext); - - // setup the ban info - pBan->m_Info.m_Expires = Stamp; - pBan->m_Info.m_Addr = Addr; - str_copy(pBan->m_Info.m_Reason, pReason, sizeof(pBan->m_Info.m_Reason)); - - // add it to the ban hash - MACRO_LIST_LINK_FIRST(pBan, m_aBans[IpHash], m_pHashPrev, m_pHashNext); - - // insert it into the used list - { - if(m_BanPool_FirstUsed) - { - CBan *pInsertAfter = m_BanPool_FirstUsed; - MACRO_LIST_FIND(pInsertAfter, m_pNext, Stamp < pInsertAfter->m_Info.m_Expires); - - if(pInsertAfter) - pInsertAfter = pInsertAfter->m_pPrev; - else - { - // add to last - pInsertAfter = m_BanPool_FirstUsed; - while(pInsertAfter->m_pNext) - pInsertAfter = pInsertAfter->m_pNext; - } - - if(pInsertAfter) - { - MACRO_LIST_LINK_AFTER(pBan, pInsertAfter, m_pPrev, m_pNext); - } - else - { - MACRO_LIST_LINK_FIRST(pBan, m_BanPool_FirstUsed, m_pPrev, m_pNext); - } - } - else - { - MACRO_LIST_LINK_FIRST(pBan, m_BanPool_FirstUsed, m_pPrev, m_pNext); - } - } - - // drop banned clients - { - char Buf[128]; - NETADDR BanAddr; - - if(Stamp > -1) - { - int Mins = (Seconds + 59) / 60; - if(Mins <= 1) - str_format(Buf, sizeof(Buf), "You have been banned for 1 minute (%s)", pReason); - else - str_format(Buf, sizeof(Buf), "You have been banned for %d minutes (%s)", Mins, pReason); - } - else - str_format(Buf, sizeof(Buf), "You have been banned for life (%s)", pReason); - - for(int i = 0; i < MaxClients(); i++) - { - BanAddr = m_aSlots[i].m_Connection.PeerAddress(); - BanAddr.port = 0; - - if(net_addr_comp(&Addr, &BanAddr) == 0) - Drop(i, Buf); - } - } - return 0; -} - int CNetServer::Update() { - int Now = time_timestamp(); for(int i = 0; i < MaxClients(); i++) { m_aSlots[i].m_Connection.Update(); @@ -267,13 +76,6 @@ int CNetServer::Update() Drop(i, m_aSlots[i].m_Connection.ErrorString()); } - // remove expired bans - while(m_BanPool_FirstUsed && m_BanPool_FirstUsed->m_Info.m_Expires > -1 && m_BanPool_FirstUsed->m_Info.m_Expires < Now) - { - CBan *pBan = m_BanPool_FirstUsed; - BanRemoveByObject(pBan); - } - return 0; } @@ -282,8 +84,6 @@ int CNetServer::Update() */ int CNetServer::Recv(CNetChunk *pChunk) { - unsigned Now = time_timestamp(); - while(1) { NETADDR Addr; @@ -301,36 +101,12 @@ int CNetServer::Recv(CNetChunk *pChunk) if(CNetBase::UnpackPacket(m_RecvUnpacker.m_aBuffer, Bytes, &m_RecvUnpacker.m_Data) == 0) { - CBan *pBan = 0; - NETADDR BanAddr = Addr; - int IpHash = (BanAddr.ip[0]+BanAddr.ip[1]+BanAddr.ip[2]+BanAddr.ip[3]+BanAddr.ip[4]+BanAddr.ip[5]+BanAddr.ip[6]+BanAddr.ip[7]+ - BanAddr.ip[8]+BanAddr.ip[9]+BanAddr.ip[10]+BanAddr.ip[11]+BanAddr.ip[12]+BanAddr.ip[13]+BanAddr.ip[14]+BanAddr.ip[15])&0xff; - int Found = 0; - BanAddr.port = 0; - - // search a ban - for(pBan = m_aBans[IpHash]; pBan; pBan = pBan->m_pHashNext) - { - if(net_addr_comp(&pBan->m_Info.m_Addr, &BanAddr) == 0) - break; - } - // check if we just should drop the packet - if(pBan) + char aBuf[128]; + if(NetBan() && NetBan()->IsBanned(&Addr, aBuf, sizeof(aBuf))) { // banned, reply with a message - char BanStr[128]; - if(pBan->m_Info.m_Expires > -1) - { - int Mins = ((pBan->m_Info.m_Expires - Now)+59)/60; - if(Mins <= 1) - str_format(BanStr, sizeof(BanStr), "Banned for 1 minute (%s)", pBan->m_Info.m_Reason); - else - str_format(BanStr, sizeof(BanStr), "Banned for %d minutes (%s)", Mins, pBan->m_Info.m_Reason); - } - else - str_format(BanStr, sizeof(BanStr), "Banned for life (%s)", pBan->m_Info.m_Reason); - CNetBase::SendControlMsg(m_Socket, &Addr, 0, NET_CTRLMSG_CLOSE, BanStr, str_length(BanStr)+1); + CNetBase::SendControlMsg(m_Socket, &Addr, 0, NET_CTRLMSG_CLOSE, aBuf, str_length(aBuf)+1); continue; } @@ -348,16 +124,15 @@ int CNetServer::Recv(CNetChunk *pChunk) // TODO: check size here if(m_RecvUnpacker.m_Data.m_Flags&NET_PACKETFLAG_CONTROL && m_RecvUnpacker.m_Data.m_aChunkData[0] == NET_CTRLMSG_CONNECT) { - Found = 0; + bool Found = false; // check if we already got this client for(int i = 0; i < MaxClients(); i++) { - NETADDR PeerAddr = m_aSlots[i].m_Connection.PeerAddress(); if(m_aSlots[i].m_Connection.State() != NET_CONNSTATE_OFFLINE && - net_addr_comp(&PeerAddr, &Addr) == 0) + net_addr_comp(m_aSlots[i].m_Connection.PeerAddress(), &Addr) == 0) { - Found = 1; // silent ignore.. we got this client already + Found = true; // silent ignore.. we got this client already break; } } @@ -374,7 +149,7 @@ int CNetServer::Recv(CNetChunk *pChunk) if(m_aSlots[i].m_Connection.State() == NET_CONNSTATE_OFFLINE) continue; - OtherAddr = m_aSlots[i].m_Connection.PeerAddress(); + OtherAddr = *m_aSlots[i].m_Connection.PeerAddress(); OtherAddr.port = 0; if(!net_addr_comp(&ThisAddr, &OtherAddr)) { @@ -392,7 +167,7 @@ int CNetServer::Recv(CNetChunk *pChunk) { if(m_aSlots[i].m_Connection.State() == NET_CONNSTATE_OFFLINE) { - Found = 1; + Found = true; m_aSlots[i].m_Connection.Feed(&m_RecvUnpacker.m_Data, &Addr); if(m_pfnNewClient) m_pfnNewClient(i, m_UserPtr); @@ -412,8 +187,7 @@ int CNetServer::Recv(CNetChunk *pChunk) // normal packet, find matching slot for(int i = 0; i < MaxClients(); i++) { - NETADDR PeerAddr = m_aSlots[i].m_Connection.PeerAddress(); - if(net_addr_comp(&PeerAddr, &Addr) == 0) + if(net_addr_comp(m_aSlots[i].m_Connection.PeerAddress(), &Addr) == 0) { if(m_aSlots[i].m_Connection.Feed(&m_RecvUnpacker.m_Data, &Addr)) { |