401 lines
7.9 KiB
C
401 lines
7.9 KiB
C
// Emacs style mode select -*- C++ -*-
|
|
//-----------------------------------------------------------------------------
|
|
//
|
|
// MSERV SDK
|
|
//
|
|
// Copyright (C) 1998-2000 by DooM Legacy Team.
|
|
// Adapted by Oogaland.
|
|
//
|
|
// 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.
|
|
//
|
|
//
|
|
//
|
|
// DESCRIPTION:
|
|
// Commands used to communicate with the master server
|
|
//
|
|
//-----------------------------------------------------------------------------
|
|
|
|
|
|
#ifdef WIN32
|
|
#include <windows.h> // socket(),...
|
|
#else
|
|
#include <unistd.h>
|
|
#endif
|
|
|
|
|
|
|
|
|
|
#include "launcher.h"
|
|
|
|
#include "mserv.h"
|
|
#include "i_tcp.h"
|
|
|
|
|
|
|
|
|
|
|
|
// ================================ DEFINITIONS ===============================
|
|
|
|
#define PACKET_SIZE 1024
|
|
|
|
#define MS_NO_ERROR 0
|
|
#define MS_SOCKET_ERROR -201
|
|
#define MS_CONNECT_ERROR -203
|
|
#define MS_WRITE_ERROR -210
|
|
#define MS_READ_ERROR -211
|
|
#define MS_CLOSE_ERROR -212
|
|
#define MS_GETHOSTBYNAME_ERROR -220
|
|
#define MS_GETHOSTNAME_ERROR -221
|
|
#define MS_TIMEOUT_ERROR -231
|
|
|
|
// see master server code for the values
|
|
#define GET_SERVER_MSG 200
|
|
|
|
|
|
#define HEADER_SIZE ((long)sizeof(long)*3)
|
|
|
|
#define HEADER_MSG_POS 0
|
|
#define IP_MSG_POS 16
|
|
#define PORT_MSG_POS 32
|
|
#define HOSTNAME_MSG_POS 40
|
|
|
|
#ifndef SOCKET
|
|
#define SOCKET int
|
|
#endif
|
|
|
|
typedef struct {
|
|
long id;
|
|
long type;
|
|
long length;
|
|
char buffer[PACKET_SIZE];
|
|
} msg_t;
|
|
|
|
|
|
// win32 or djgpp
|
|
#if defined( WIN32) || defined( __DJGPP__ )
|
|
#define ioctl ioctlsocket
|
|
#define close closesocket
|
|
#endif
|
|
|
|
#if defined( WIN32) || defined( __OS2__)
|
|
// it seems windows doesn't define that... maybe some other OS? OS/2
|
|
int inet_aton(char *hostname, struct in_addr *addr)
|
|
{
|
|
return ( (addr->s_addr=inet_addr(hostname)) != INADDR_NONE );
|
|
}
|
|
#endif
|
|
|
|
|
|
|
|
enum { MSCS_NONE, MSCS_WAITING, MSCS_REGISTERED, MSCS_FAILED } con_state = MSCS_NONE;
|
|
|
|
|
|
static SOCKET socket_fd = -1; // TCP/IP socket
|
|
static struct sockaddr_in addr;
|
|
static struct timeval select_timeout;
|
|
static fd_set wset;
|
|
|
|
int MS_Connect(char *ip_addr, char *str_port, int async);
|
|
static int MS_Read(msg_t *msg);
|
|
static int MS_Write(msg_t *msg);
|
|
static int MS_GetIP(char *);
|
|
|
|
void ExtractServerInfo(char *serverout, struct SERVERLIST *serverlist);
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
void CloseConnection(void)
|
|
{
|
|
if(socket_fd > 0) close(socket_fd);
|
|
socket_fd = -1;
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
** MS_GetIP()
|
|
*/
|
|
static int MS_GetIP(char *hostname)
|
|
{
|
|
struct hostent *host_ent;
|
|
|
|
if (!inet_aton(hostname, &addr.sin_addr)) {
|
|
//TODO: only when we are connected to Internet, or use a non bloking call
|
|
host_ent = gethostbyname(hostname);
|
|
if (host_ent==NULL)
|
|
return MS_GETHOSTBYNAME_ERROR;
|
|
memcpy(&addr.sin_addr, host_ent->h_addr_list[0], sizeof(struct in_addr));
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
** MS_Connect()
|
|
*/
|
|
int MS_Connect(char *ip_addr, char *str_port, int async)
|
|
{
|
|
memset(&addr, 0, sizeof(addr));
|
|
addr.sin_family = AF_INET;
|
|
I_InitTcpDriver(); // this is done only if not already done
|
|
|
|
if ((socket_fd = socket(AF_INET, SOCK_STREAM, 0)) < 0)
|
|
return MS_SOCKET_ERROR;
|
|
|
|
if (MS_GetIP(ip_addr)==MS_GETHOSTBYNAME_ERROR)
|
|
return MS_GETHOSTBYNAME_ERROR;
|
|
addr.sin_port = htons((u_short)atoi(str_port));
|
|
|
|
if (async) // do asynchronous connection
|
|
{
|
|
int res = 1;
|
|
|
|
ioctl(socket_fd, FIONBIO, &res);
|
|
res = connect(socket_fd, (struct sockaddr *) &addr, sizeof(addr));
|
|
if (res < 0)
|
|
{
|
|
// humm, on win32 it doesn't work with EINPROGRESS (stupid windows)
|
|
if (WSAGetLastError() != WSAEWOULDBLOCK)
|
|
{
|
|
con_state = MSCS_FAILED;
|
|
CloseConnection();
|
|
return MS_CONNECT_ERROR;
|
|
}
|
|
}
|
|
con_state = MSCS_WAITING;
|
|
FD_ZERO(&wset);
|
|
FD_SET(socket_fd, &wset);
|
|
select_timeout.tv_sec = 0, select_timeout.tv_usec = 0;
|
|
}
|
|
else
|
|
{
|
|
if (connect(socket_fd, (struct sockaddr *) &addr, sizeof(addr)) < 0)
|
|
return MS_CONNECT_ERROR;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
* MS_Write():
|
|
*/
|
|
static int MS_Write(msg_t *msg)
|
|
{
|
|
int len;
|
|
|
|
if (msg->length < 0)
|
|
msg->length = strlen(msg->buffer);
|
|
len = msg->length+HEADER_SIZE;
|
|
|
|
//msg->id = htonl(msg->id);
|
|
msg->type = htonl(msg->type);
|
|
msg->length = htonl(msg->length);
|
|
|
|
if (send(socket_fd, (char*)msg, len, 0) != len)
|
|
return MS_WRITE_ERROR;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
* MS_Read():
|
|
*/
|
|
static int MS_Read(msg_t *msg)
|
|
{
|
|
if (recv(socket_fd, (char*)msg, HEADER_SIZE, 0) != HEADER_SIZE)
|
|
return MS_READ_ERROR;
|
|
|
|
msg->type = ntohl(msg->type);
|
|
msg->length = ntohl(msg->length);
|
|
|
|
if (!msg->length) //Hurdler: fix a bug in Windows 2000
|
|
return 0;
|
|
|
|
if (recv(socket_fd, (char*)msg->buffer, msg->length, 0) != msg->length)
|
|
return MS_READ_ERROR;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/***************************************************************************/
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* GetServerListEx */
|
|
EXPORT int __stdcall GetServerListEx(char *host, char *str_port, struct SERVERLIST serverlist[], short max_servers)
|
|
{
|
|
msg_t msg;
|
|
int count = 0;
|
|
|
|
|
|
/* Attempt to connect to list server. */
|
|
MS_Connect(host, str_port, 0);
|
|
|
|
/* Poll the list server. If it fails, depart with an error code of -1. */
|
|
msg.type = GET_SERVER_MSG;
|
|
msg.length = 0;
|
|
if (MS_Write(&msg) < 0)
|
|
return -1;
|
|
|
|
|
|
|
|
/* Get a description of each server in turn. */
|
|
/* What we get is exactly the same as the output to the console when using LISTSERV. */
|
|
while (MS_Read(&msg) >= 0)
|
|
{
|
|
if(msg.length == 0 || count >= max_servers)
|
|
{
|
|
CloseConnection();
|
|
return count;
|
|
}
|
|
|
|
ExtractServerInfo(msg.buffer, &serverlist[count]);
|
|
|
|
count++;
|
|
}
|
|
|
|
|
|
CloseConnection();
|
|
return -2;
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* GetServerList */
|
|
/* Warning: Large kludge follows! This function is only included for backwards-compatibility. */
|
|
/* Use GetServerListVB or GetServerListEx instead. */
|
|
EXPORT int __stdcall GetServerList(char *host, char *str_port,
|
|
|
|
struct SERVERLIST *serverlist1,struct SERVERLIST *serverlist2,struct SERVERLIST *serverlist3,
|
|
struct SERVERLIST *serverlist4,struct SERVERLIST *serverlist5,struct SERVERLIST *serverlist6,
|
|
struct SERVERLIST *serverlist7,struct SERVERLIST *serverlist8,struct SERVERLIST *serverlist9,
|
|
struct SERVERLIST *serverlist10,struct SERVERLIST *serverlist11,struct SERVERLIST *serverlist12,
|
|
struct SERVERLIST *serverlist13,struct SERVERLIST *serverlist14,struct SERVERLIST *serverlist15,
|
|
struct SERVERLIST *serverlist16)
|
|
{
|
|
msg_t msg;
|
|
int count = 0;
|
|
struct SERVERLIST *serverlist[16];
|
|
|
|
|
|
/* Attempt to connect to list server. */
|
|
MS_Connect(host, str_port, 0);
|
|
|
|
/* Poll the list server. If it fails, bomb with an error code of -1. */
|
|
msg.type = GET_SERVER_MSG;
|
|
msg.length = 0;
|
|
if (MS_Write(&msg) < 0)
|
|
return -1;
|
|
|
|
serverlist[0] = serverlist1;
|
|
serverlist[1] = serverlist2;
|
|
serverlist[2] = serverlist3;
|
|
serverlist[3] = serverlist4;
|
|
serverlist[4] = serverlist5;
|
|
serverlist[5] = serverlist6;
|
|
serverlist[6] = serverlist7;
|
|
serverlist[7] = serverlist8;
|
|
serverlist[8] = serverlist9;
|
|
serverlist[9] = serverlist10;
|
|
serverlist[10] = serverlist11;
|
|
serverlist[11] = serverlist12;
|
|
serverlist[12] = serverlist13;
|
|
serverlist[13] = serverlist14;
|
|
serverlist[14] = serverlist15;
|
|
serverlist[15] = serverlist16;
|
|
|
|
|
|
|
|
|
|
while (MS_Read(&msg) >= 0 && count < 16)
|
|
{
|
|
if(msg.length == 0 || count >= 16)
|
|
{
|
|
CloseConnection();
|
|
return count;
|
|
}
|
|
|
|
ExtractServerInfo(msg.buffer, serverlist[count]);
|
|
|
|
count++;
|
|
}
|
|
|
|
|
|
CloseConnection();
|
|
|
|
|
|
return -2;
|
|
}
|
|
|
|
|
|
|
|
void ExtractServerInfo(char *serverout, struct SERVERLIST *serverlist)
|
|
{
|
|
char *lines[5];
|
|
int i;
|
|
|
|
i=0;
|
|
lines[0] = strtok(serverout, "\r\n");
|
|
for(i=1; i<5; i++)
|
|
{
|
|
lines[i] = strtok(NULL, "\r\n");
|
|
}
|
|
|
|
strcpy(serverlist->ip, strstr(lines[0], ": ")+2);
|
|
strcpy(serverlist->port, strstr(lines[1], ": ")+2);
|
|
strcpy(serverlist->name, strstr(lines[2], ": ")+2);
|
|
strcpy(serverlist->version, strstr(lines[3], ": ")+2);
|
|
strcpy(serverlist->perm, strstr(lines[4], ": ")+2);
|
|
}
|