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/* (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"
bool CNetConsole::Open(NETADDR BindAddr, int Flags)
{
// zero out the whole structure
mem_zero(this, sizeof(*this));
m_Socket.type = NETTYPE_INVALID;
m_Socket.ipv4sock = -1;
m_Socket.ipv6sock = -1;
// open socket
m_Socket = net_tcp_create(BindAddr);
if(!m_Socket.type)
return false;
if(net_tcp_listen(m_Socket, NET_MAX_CONSOLE_CLIENTS))
return false;
net_set_non_blocking(m_Socket);
for(int i = 0; i < NET_MAX_CONSOLE_CLIENTS; i++)
m_aSlots[i].m_Connection.Reset();
return true;
}
void CNetConsole::SetCallbacks(NETFUNC_NEWCLIENT pfnNewClient, NETFUNC_DELCLIENT pfnDelClient, void *pUser)
{
m_pfnNewClient = pfnNewClient;
m_pfnDelClient = pfnDelClient;
m_UserPtr = pUser;
}
int CNetConsole::Close()
{
for(int i = 0; i < NET_MAX_CONSOLE_CLIENTS; i++)
m_aSlots[i].m_Connection.Disconnect("closing console");
net_tcp_close(m_Socket);
return 0;
}
int CNetConsole::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 CNetConsole::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_CONSOLE_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)
{
NETADDR PeerAddr = m_aSlots[i].m_Connection.PeerAddress();
if(net_addr_comp(pAddr, &PeerAddr) == 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 CNetConsole::Update()
{
NETSOCKET Socket;
NETADDR Addr;
if(net_tcp_accept(m_Socket, &Socket, &Addr) > 0)
{
int Index = FindBan(Addr);
if(Index == -1)
AcceptClient(Socket, &Addr);
else
{
char aBuf[128];
if(m_aBans[Index].m_Expires > -1)
{
int Mins = (m_aBans[Index].m_Expires-time_timestamp()+ 59) / 60;
if(Mins <= 1)
str_format(aBuf, sizeof(aBuf), "You have been banned for 1 minute");
else
str_format(aBuf, sizeof(aBuf), "You have been banned for %d minutes", Mins);
}
else
str_format(aBuf, sizeof(aBuf), "You have been banned for life");
net_tcp_send(Socket, aBuf, str_length(aBuf));
net_tcp_close(Socket);
}
}
for(int i = 0; i < NET_MAX_CONSOLE_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());
}
UpdateBans();
return 0;
}
int CNetConsole::Recv(char *pLine, int MaxLength, int *pClientID)
{
for(int i = 0; i < NET_MAX_CONSOLE_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 CNetConsole::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;
}
int CNetConsole::FindBan(NETADDR Addr)
{
Addr.port = 0;
for(int i = 0; i < m_NumBans; i++)
if(net_addr_comp(&m_aBans[i].m_Addr, &Addr) == 0)
return i;
return -1;
}
bool CNetConsole::AddBan(NETADDR Addr, int Seconds)
{
if(m_NumBans == MAX_BANS)
return false;
Addr.port = 0;
int Index = FindBan(Addr);
if(Index == -1)
{
Index = m_NumBans++;
m_aBans[Index].m_Addr = Addr;
}
m_aBans[Index].m_Expires = Seconds>0 ? time_timestamp()+Seconds : -1;
for(int i = 0; i < NET_MAX_CONSOLE_CLIENTS; i++)
{
if(m_aSlots[i].m_Connection.State() != NET_CONNSTATE_OFFLINE)
{
NETADDR PeerAddr = m_aSlots[i].m_Connection.PeerAddress();
PeerAddr.port = 0;
if(net_addr_comp(&Addr, &PeerAddr) == 0)
{
char aBuf[128];
if(Seconds>0)
{
int Mins = (Seconds + 59) / 60;
if(Mins <= 1)
str_format(aBuf, sizeof(aBuf), "You have been banned for 1 minute");
else
str_format(aBuf, sizeof(aBuf), "You have been banned for %d minutes", Mins);
}
else
str_format(aBuf, sizeof(aBuf), "You have been banned for life");
Drop(i, aBuf);
}
}
}
return true;
}
void CNetConsole::UpdateBans()
{
int Now = time_timestamp();
for(int i = 0; i < m_NumBans; ++i)
if(m_aBans[i].m_Expires > 0 && m_aBans[i].m_Expires < Now)
{
m_aBans[i] = m_aBans[m_NumBans-1];
--m_NumBans;
break;
}
}
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