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/*
* This file is part of OpenTTD.
* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
* OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file core.cpp Functions used to initialize/shut down the core network
*/
#include "../../stdafx.h"
#include "../../debug.h"
#include "os_abstraction.h"
#include "packet.h"
#include "../../string_func.h"
#include "../../safeguards.h"
/**
* Initializes the network core (as that is needed for some platforms
* @return true if the core has been initialized, false otherwise
*/
bool NetworkCoreInitialize()
{
/* Let's load the network in windows */
#ifdef _WIN32
{
WSADATA wsa;
DEBUG(net, 3, "[core] loading windows socket library");
if (WSAStartup(MAKEWORD(2, 0), &wsa) != 0) {
DEBUG(net, 0, "[core] WSAStartup failed, network unavailable");
return false;
}
}
#endif /* _WIN32 */
return true;
}
/**
* Shuts down the network core (as that is needed for some platforms
*/
void NetworkCoreShutdown()
{
#if defined(_WIN32)
WSACleanup();
#endif
}
#if defined(_WIN32)
/**
* Return the string representation of the given error from the OS's network functions.
* @param error The error number (from \c NetworkGetLastError()).
* @return The error message, potentially an empty string but never \c nullptr.
*/
const char *NetworkGetErrorString(int error)
{
static char buffer[512];
if (FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL, error,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), buffer, sizeof(buffer), NULL) == 0) {
seprintf(buffer, lastof(buffer), "Unknown error %d", error);
}
return buffer;
}
#endif /* defined(_WIN32) */
/**
* Serializes the GRFIdentifier (GRF ID and MD5 checksum) to the packet
* @param p the packet to write the data to
* @param grf the GRFIdentifier to serialize
*/
void NetworkSocketHandler::SendGRFIdentifier(Packet *p, const GRFIdentifier *grf)
{
uint j;
p->Send_uint32(grf->grfid);
for (j = 0; j < sizeof(grf->md5sum); j++) {
p->Send_uint8 (grf->md5sum[j]);
}
}
/**
* Deserializes the GRFIdentifier (GRF ID and MD5 checksum) from the packet
* @param p the packet to read the data from
* @param grf the GRFIdentifier to deserialize
*/
void NetworkSocketHandler::ReceiveGRFIdentifier(Packet *p, GRFIdentifier *grf)
{
uint j;
grf->grfid = p->Recv_uint32();
for (j = 0; j < sizeof(grf->md5sum); j++) {
grf->md5sum[j] = p->Recv_uint8();
}
}
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