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Copy pathnetwork.cpp
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144 lines (121 loc) · 3.16 KB
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#include <system.h>
#include "netban.h"
#include "network.h"
bool CNetwork::Open(NETADDR BindAddr, CNetBan *pNetBan)
{
// zero out the whole structure
mem_zero(this, sizeof(*this));
m_Socket.type = NETTYPE_INVALID;
m_Socket.ipv4sock = -1;
m_Socket.ipv6sock = -1;
m_pNetBan = pNetBan;
// open socket
m_Socket = net_tcp_create(BindAddr);
if(!m_Socket.type)
return false;
if(net_tcp_listen(m_Socket, NET_MAX_CLIENTS))
return false;
net_set_non_blocking(m_Socket);
for(int i = 0; i < NET_MAX_CLIENTS; i++)
m_aSlots[i].m_Connection.Reset();
return true;
}
void CNetwork::SetCallbacks(NETFUNC_NEWCLIENT pfnNewClient, NETFUNC_DELCLIENT pfnDelClient, void *pUser)
{
m_pfnNewClient = pfnNewClient;
m_pfnDelClient = pfnDelClient;
m_UserPtr = pUser;
}
int CNetwork::Close()
{
for(int i = 0; i < NET_MAX_CLIENTS; i++)
m_aSlots[i].m_Connection.Disconnect("Closing connection.");
net_tcp_close(m_Socket);
return 0;
}
int CNetwork::Drop(int ClientID, const char *pReason)
{
if(m_pfnDelClient)
m_pfnDelClient(ClientID, pReason, m_UserPtr);
m_aSlots[ClientID].m_Connection.Disconnect(pReason);
return 0;
}
int CNetwork::AcceptClient(NETSOCKET Socket, const NETADDR *pAddr)
{
char aError[256] = { 0 };
int FreeSlot = -1;
// look for free slot or multiple client
for(int i = 0; i < NET_MAX_CLIENTS; i++)
{
if(FreeSlot == -1 && m_aSlots[i].m_Connection.State() == NET_CONNSTATE_OFFLINE)
FreeSlot = i;
if(m_aSlots[i].m_Connection.State() != NET_CONNSTATE_OFFLINE)
{
if(net_addr_comp(pAddr, m_aSlots[i].m_Connection.PeerAddress()) == 0)
{
str_copy(aError, "Only one client per IP allowed.", sizeof(aError));
break;
}
}
}
// accept client
if(!aError[0] && FreeSlot != -1)
{
m_aSlots[FreeSlot].m_Connection.Init(Socket, pAddr);
if(m_pfnNewClient)
m_pfnNewClient(FreeSlot, m_UserPtr);
return 0;
}
// reject client
if(!aError[0])
str_copy(aError, "No free slot available.", sizeof(aError));
net_tcp_send(Socket, aError, str_length(aError));
net_tcp_close(Socket);
return -1;
}
int CNetwork::Update()
{
NETSOCKET Socket;
NETADDR Addr;
if(net_tcp_accept(m_Socket, &Socket, &Addr) > 0)
{
// check if we should just drop the packet
char aBuf[128];
if(NetBan() && NetBan()->IsBanned(&Addr, aBuf, sizeof(aBuf)))
{
// banned, reply with a message and drop
net_tcp_send(Socket, aBuf, str_length(aBuf));
net_tcp_close(Socket);
}
else
AcceptClient(Socket, &Addr);
}
for(int i = 0; i < NET_MAX_CLIENTS; i++)
{
if(m_aSlots[i].m_Connection.State() == NET_CONNSTATE_ONLINE)
m_aSlots[i].m_Connection.Update();
if(m_aSlots[i].m_Connection.State() == NET_CONNSTATE_ERROR)
Drop(i, m_aSlots[i].m_Connection.ErrorString());
}
return 0;
}
int CNetwork::Recv(char *pLine, int MaxLength, int *pClientID)
{
for(int i = 0; i < NET_MAX_CLIENTS; i++)
{
if(m_aSlots[i].m_Connection.State() == NET_CONNSTATE_ONLINE && m_aSlots[i].m_Connection.Recv(pLine, MaxLength))
{
if(pClientID)
*pClientID = i;
return 1;
}
}
return 0;
}
int CNetwork::Send(int ClientID, const char *pLine)
{
if(m_aSlots[ClientID].m_Connection.State() == NET_CONNSTATE_ONLINE)
return m_aSlots[ClientID].m_Connection.Send(pLine);
else
return -1;
}