MMP, Cancel fork, because i do not know how to merge to the original foreign author

2026-03-29 01:39:44 +08:00 · 2018-06-26 11:28:43 +08:00
parent 1c0e49a137
commit 97635546ab
32 changed files with 8231 additions and 0 deletions
--- a/server/src/network.cpp
+++ b/server/src/network.cpp
@@ -0,0 +1,144 @@
+#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;
+}