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/**
** Servemsg.cc - Server msgs.
** NOTE: This is for inclusion by both client and server.
**
** Written: 5/28/2001 - JSF
**/
/*
Copyright (C) 2001-2022 The Exult Team
This program 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; either version 2
of the License, or (at your option) any later version.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include "servemsg.h"
#include "ignore_unused_variable_warning.h"
#include <unistd.h>
#include <cstring>
#include <iostream> /* For debugging msgs. */
#ifdef _WIN32
# include "servewin32.h"
#endif
using std::cout;
using std::endl;
namespace Exult_server {
/*
* Send data.
*
* Output: -1 if error.
*/
int Send_data(
int socket, Msg_type id, const unsigned char* data, int datalen) {
#ifdef USE_EXULTSTUDIO
unsigned char buf[maxlength + hdrlength];
buf[0] = magic & 0xff; // Store magic (low-byte first).
buf[1] = (magic >> 8) & 0xff;
buf[2] = datalen & 0xff; // Data length.
buf[3] = (datalen >> 8) & 0xff;
buf[4] = id;
if (datalen > 0) {
std::memcpy(&buf[5], data, datalen); // The data itself.
}
const int len = datalen + hdrlength;
return write(socket, buf, len) == len ? 0 : -1;
#else /* USE_EXULTSTUDIO */
ignore_unused_variable_warning(socket, id, data, datalen);
return -1;
#endif /* USE_EXULTSTUDIO */
}
/*
* Read message from client.
*
* Output: Length of data, else -1.
*/
int Receive_data(
int& socket, // Closed, set to -1 if disconnected.
Msg_type& id, // ID returned.
unsigned char* data, int datalen) {
#ifdef USE_EXULTSTUDIO
unsigned char buf[hdrlength];
const int len = read(socket, buf, 2); // Get magic.
if (!len) { // Closed?
close(socket);
socket = -1;
return -1;
}
if (len == -1) { // Nothing available?
return -1;
}
const int magic = buf[0] + (buf[1] << 8);
if (magic != Exult_server::magic) {
cout << "Bad magic read" << endl;
return -1;
}
if (read(socket, buf, 3) != 3) {
cout << "Couldn't read length+type" << endl;
return -1;
}
const int dlen = buf[0] | (buf[1] << 8);
// Message type.
id = static_cast<Exult_server::Msg_type>(buf[2]);
if (dlen > Exult_server::maxlength || dlen > datalen) {
cout << "Length " << datalen << " exceeds max" << endl;
//+++++++++Eat the chars.
return -1;
}
datalen = read(socket, data, dlen); // Read data.
if (datalen < dlen) {
cout << "Failed to read all " << dlen << " bytes" << endl;
return -1;
}
return datalen;
#else /* USE_EXULTSTUDIO */
ignore_unused_variable_warning(socket, id, data, datalen);
return -1;
#endif /* USE_EXULTSTUDIO */
}
bool wait_for_response(int socket, int ms) {
ignore_unused_variable_warning(socket, ms);
#if defined(_WIN32) && defined(USE_EXULTSTUDIO)
/*
int ticks = GetTickCount();
while(GetTickCount() < ticks+ms) {
if (peek_pipe() > 0) return true;
SleepEx(1, TRUE);
}
if (peek_pipe() > 0) return true;
return false;
*/
#endif
return true;
}
} // namespace Exult_server
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