mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-12-18 00:21:31 +00:00
323015b11a
a nono because headers in include/QF get installed, but include don't and thus would break quakeforge-dev.
517 lines
11 KiB
C
517 lines
11 KiB
C
/*
|
|
net_udp.c
|
|
|
|
@description@
|
|
|
|
Copyright (C) 1996-1997 Id Software, Inc.
|
|
|
|
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:
|
|
|
|
Free Software Foundation, Inc.
|
|
59 Temple Place - Suite 330
|
|
Boston, MA 02111-1307, USA
|
|
|
|
$Id$
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
# include "config.h"
|
|
#endif
|
|
#ifdef HAVE_STRING_H
|
|
# include <string.h>
|
|
#endif
|
|
#ifdef HAVE_STRINGS_H
|
|
# include <strings.h>
|
|
#endif
|
|
|
|
#include <sys/types.h>
|
|
#ifdef HAVE_SYS_SOCKET_H
|
|
# include <sys/socket.h>
|
|
#endif
|
|
#ifdef HAVE_NETINET_IN_H
|
|
# include <netinet/in.h>
|
|
#endif
|
|
#ifdef HAVE_ARPA_INET_H
|
|
# include <arpa/inet.h>
|
|
#endif
|
|
#ifdef HAVE_NETDB_H
|
|
# include <netdb.h>
|
|
#endif
|
|
#ifdef HAVE_SYS_PARAM_H
|
|
# include <sys/param.h>
|
|
#endif
|
|
#ifdef HAVE_SYS_IOCTL_H
|
|
# include <sys/ioctl.h>
|
|
#endif
|
|
#ifdef HAVE_WINDOWS_H
|
|
# include <windows.h>
|
|
#endif
|
|
#ifdef HAVE_WINSOCK_H
|
|
# include <winsock.h>
|
|
#endif
|
|
#include <errno.h>
|
|
#include <stdlib.h>
|
|
|
|
#ifdef HAVE_UNISTD_H
|
|
#include <unistd.h>
|
|
#endif
|
|
|
|
#ifdef __sun__
|
|
#include <sys/filio.h>
|
|
#endif
|
|
|
|
#ifdef NeXT
|
|
#include <libc.h>
|
|
#endif
|
|
|
|
#include "compat.h"
|
|
#include "QF/cvar.h"
|
|
#include "QF/qargs.h"
|
|
#include "QF/sys.h"
|
|
#include "QF/console.h"
|
|
|
|
#include "net.h"
|
|
|
|
#ifdef _WIN32
|
|
# undef EWOULDBLOCK
|
|
# define EWOULDBLOCK WSAEWOULDBLOCK
|
|
# undef ECONNREFUSED
|
|
# define ECONNREFUSED WSAECONNREFUSED
|
|
#endif
|
|
|
|
#ifndef MAXHOSTNAMELEN
|
|
# define MAXHOSTNAMELEN 512
|
|
#endif
|
|
|
|
#ifndef HAVE_SOCKLEN_T
|
|
# ifdef HAVE_SIZE
|
|
typedef size_t socklen_t;
|
|
# else
|
|
typedef unsigned int socklen_t;
|
|
# endif
|
|
#endif
|
|
|
|
//extern int gethostname (char *, int);
|
|
extern int close (int);
|
|
|
|
static int net_acceptsocket = -1; // socket for fielding new
|
|
|
|
// connections
|
|
static int net_controlsocket;
|
|
static int net_broadcastsocket = 0;
|
|
static struct qsockaddr broadcastaddr;
|
|
|
|
static unsigned long myAddr;
|
|
|
|
#include "net_udp.h"
|
|
|
|
//=============================================================================
|
|
|
|
int
|
|
UDP_Init (void)
|
|
{
|
|
struct hostent *local;
|
|
char buff[MAXHOSTNAMELEN];
|
|
struct qsockaddr addr;
|
|
char *colon;
|
|
|
|
if (COM_CheckParm ("-noudp"))
|
|
return -1;
|
|
|
|
// determine my name & address
|
|
gethostname (buff, MAXHOSTNAMELEN);
|
|
local = gethostbyname (buff);
|
|
myAddr = *(int *) local->h_addr_list[0];
|
|
|
|
// if the quake hostname isn't set, set it to the machine name
|
|
if (strcmp (hostname->string, "UNNAMED") == 0) {
|
|
buff[15] = 0;
|
|
Cvar_Set (hostname, buff);
|
|
}
|
|
|
|
if ((net_controlsocket = UDP_OpenSocket (0)) == -1)
|
|
Sys_Error ("UDP_Init: Unable to open control socket\n");
|
|
|
|
((struct sockaddr_in *) &broadcastaddr)->sin_family = AF_INET;
|
|
((struct sockaddr_in *) &broadcastaddr)->sin_addr.s_addr = INADDR_BROADCAST;
|
|
((struct sockaddr_in *) &broadcastaddr)->sin_port = htons (net_hostport);
|
|
|
|
UDP_GetSocketAddr (net_controlsocket, &addr);
|
|
strcpy (my_tcpip_address, UDP_AddrToString (&addr));
|
|
colon = strrchr (my_tcpip_address, ':');
|
|
if (colon)
|
|
*colon = 0;
|
|
|
|
Con_Printf ("UDP Initialized\n");
|
|
tcpipAvailable = true;
|
|
|
|
return net_controlsocket;
|
|
}
|
|
|
|
//=============================================================================
|
|
|
|
void
|
|
UDP_Shutdown (void)
|
|
{
|
|
UDP_Listen (false);
|
|
UDP_CloseSocket (net_controlsocket);
|
|
}
|
|
|
|
//=============================================================================
|
|
|
|
void
|
|
UDP_Listen (qboolean state)
|
|
{
|
|
// enable listening
|
|
if (state) {
|
|
if (net_acceptsocket != -1)
|
|
return;
|
|
if ((net_acceptsocket = UDP_OpenSocket (net_hostport)) == -1)
|
|
Sys_Error ("UDP_Listen: Unable to open accept socket\n");
|
|
return;
|
|
}
|
|
// disable listening
|
|
if (net_acceptsocket == -1)
|
|
return;
|
|
UDP_CloseSocket (net_acceptsocket);
|
|
net_acceptsocket = -1;
|
|
}
|
|
|
|
//=============================================================================
|
|
|
|
int
|
|
UDP_OpenSocket (int port)
|
|
{
|
|
int newsocket;
|
|
struct sockaddr_in address;
|
|
#ifdef _WIN32
|
|
#define ioctl ioctlsocket
|
|
unsigned long _true = true;
|
|
#else
|
|
int _true = true;
|
|
#endif
|
|
|
|
if ((newsocket = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP)) == -1)
|
|
return -1;
|
|
|
|
if (ioctl (newsocket, FIONBIO, &_true) == -1)
|
|
goto ErrorReturn;
|
|
|
|
address.sin_family = AF_INET;
|
|
address.sin_addr.s_addr = INADDR_ANY;
|
|
address.sin_port = htons (port);
|
|
if (bind (newsocket, (void *) &address, sizeof (address)) == -1)
|
|
goto ErrorReturn;
|
|
|
|
return newsocket;
|
|
|
|
ErrorReturn:
|
|
close (newsocket);
|
|
return -1;
|
|
}
|
|
|
|
//=============================================================================
|
|
|
|
int
|
|
UDP_CloseSocket (int socket)
|
|
{
|
|
if (socket == net_broadcastsocket)
|
|
net_broadcastsocket = 0;
|
|
return close (socket);
|
|
}
|
|
|
|
|
|
//=============================================================================
|
|
/*
|
|
============
|
|
PartialIPAddress
|
|
|
|
this lets you type only as much of the net address as required, using
|
|
the local network components to fill in the rest
|
|
============
|
|
*/
|
|
static int
|
|
PartialIPAddress (char *in, struct qsockaddr *hostaddr)
|
|
{
|
|
char buff[256];
|
|
char *b;
|
|
int addr;
|
|
int num;
|
|
int mask;
|
|
int run;
|
|
int port;
|
|
|
|
buff[0] = '.';
|
|
b = buff;
|
|
strcpy (buff + 1, in);
|
|
if (buff[1] == '.')
|
|
b++;
|
|
|
|
addr = 0;
|
|
mask = -1;
|
|
while (*b == '.') {
|
|
b++;
|
|
num = 0;
|
|
run = 0;
|
|
while (!(*b < '0' || *b > '9')) {
|
|
num = num * 10 + *b++ - '0';
|
|
if (++run > 3)
|
|
return -1;
|
|
}
|
|
if ((*b < '0' || *b > '9') && *b != '.' && *b != ':' && *b != 0)
|
|
return -1;
|
|
if (num < 0 || num > 255)
|
|
return -1;
|
|
mask <<= 8;
|
|
addr = (addr << 8) + num;
|
|
}
|
|
|
|
if (*b++ == ':')
|
|
port = atoi (b);
|
|
else
|
|
port = net_hostport;
|
|
|
|
hostaddr->sa_family = AF_INET;
|
|
((struct sockaddr_in *) hostaddr)->sin_port = htons ((short) port);
|
|
|
|
((struct sockaddr_in *) hostaddr)->sin_addr.s_addr =
|
|
(myAddr & htonl (mask)) | htonl (addr);
|
|
|
|
return 0;
|
|
}
|
|
//=============================================================================
|
|
|
|
int
|
|
UDP_Connect (int socket, struct qsockaddr *addr)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
//=============================================================================
|
|
|
|
int
|
|
UDP_CheckNewConnections (void)
|
|
{
|
|
unsigned long available;
|
|
struct sockaddr_in from;
|
|
socklen_t fromlen;
|
|
char buff[1];
|
|
|
|
if (net_acceptsocket == -1)
|
|
return -1;
|
|
|
|
if (ioctl (net_acceptsocket, FIONREAD, &available) == -1)
|
|
Sys_Error ("UDP: ioctlsocket (FIONREAD) failed\n");
|
|
if (available)
|
|
return net_acceptsocket;
|
|
recvfrom (net_acceptsocket, buff, 0, 0, (struct sockaddr *) &from,
|
|
&fromlen);
|
|
return -1;
|
|
}
|
|
|
|
//=============================================================================
|
|
|
|
int
|
|
UDP_Read (int socket, byte * buf, int len, struct qsockaddr *addr)
|
|
{
|
|
int addrlen = sizeof (struct qsockaddr);
|
|
int ret;
|
|
|
|
ret = recvfrom (socket, buf, len, 0, (struct sockaddr *) addr, &addrlen);
|
|
if (ret == -1 && (errno == EWOULDBLOCK || errno == ECONNREFUSED))
|
|
return 0;
|
|
return ret;
|
|
}
|
|
|
|
//=============================================================================
|
|
|
|
int
|
|
UDP_MakeSocketBroadcastCapable (int socket)
|
|
{
|
|
int i = 1;
|
|
|
|
// make this socket broadcast capable
|
|
if (setsockopt (socket, SOL_SOCKET, SO_BROADCAST, (char *) &i, sizeof (i)) <
|
|
0) return -1;
|
|
net_broadcastsocket = socket;
|
|
|
|
return 0;
|
|
}
|
|
|
|
//=============================================================================
|
|
|
|
int
|
|
UDP_Broadcast (int socket, byte * buf, int len)
|
|
{
|
|
int ret;
|
|
|
|
if (socket != net_broadcastsocket) {
|
|
if (net_broadcastsocket != 0)
|
|
Sys_Error ("Attempted to use multiple broadcasts sockets\n");
|
|
ret = UDP_MakeSocketBroadcastCapable (socket);
|
|
if (ret == -1) {
|
|
Con_Printf ("Unable to make socket broadcast capable\n");
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
return UDP_Write (socket, buf, len, &broadcastaddr);
|
|
}
|
|
|
|
//=============================================================================
|
|
|
|
int
|
|
UDP_Write (int socket, byte * buf, int len, struct qsockaddr *addr)
|
|
{
|
|
int ret;
|
|
|
|
ret =
|
|
|
|
sendto (socket, buf, len, 0, (struct sockaddr *) addr,
|
|
sizeof (struct qsockaddr));
|
|
if (ret == -1 && errno == EWOULDBLOCK)
|
|
return 0;
|
|
return ret;
|
|
}
|
|
|
|
//=============================================================================
|
|
|
|
char *
|
|
UDP_AddrToString (struct qsockaddr *addr)
|
|
{
|
|
static char buffer[22];
|
|
int haddr;
|
|
|
|
haddr = ntohl (((struct sockaddr_in *) addr)->sin_addr.s_addr);
|
|
snprintf (buffer, sizeof (buffer), "%d.%d.%d.%d:%d", (haddr >> 24) & 0xff,
|
|
(haddr >> 16) & 0xff, (haddr >> 8) & 0xff, haddr & 0xff,
|
|
ntohs (((struct sockaddr_in *) addr)->sin_port));
|
|
return buffer;
|
|
}
|
|
|
|
//=============================================================================
|
|
|
|
int
|
|
UDP_StringToAddr (char *string, struct qsockaddr *addr)
|
|
{
|
|
int ha1, ha2, ha3, ha4, hp;
|
|
int ipaddr;
|
|
|
|
sscanf (string, "%d.%d.%d.%d:%d", &ha1, &ha2, &ha3, &ha4, &hp);
|
|
ipaddr = (ha1 << 24) | (ha2 << 16) | (ha3 << 8) | ha4;
|
|
|
|
addr->sa_family = AF_INET;
|
|
((struct sockaddr_in *) addr)->sin_addr.s_addr = htonl (ipaddr);
|
|
((struct sockaddr_in *) addr)->sin_port = htons (hp);
|
|
return 0;
|
|
}
|
|
|
|
//=============================================================================
|
|
|
|
int
|
|
UDP_GetSocketAddr (int socket, struct qsockaddr *addr)
|
|
{
|
|
int addrlen = sizeof (struct qsockaddr);
|
|
unsigned int a;
|
|
|
|
memset (addr, 0, sizeof (struct qsockaddr));
|
|
|
|
getsockname (socket, (struct sockaddr *) addr, &addrlen);
|
|
a = ((struct sockaddr_in *) addr)->sin_addr.s_addr;
|
|
if (a == 0 || a == inet_addr ("127.0.0.1"))
|
|
((struct sockaddr_in *) addr)->sin_addr.s_addr = myAddr;
|
|
|
|
return 0;
|
|
}
|
|
|
|
//=============================================================================
|
|
|
|
int
|
|
UDP_GetNameFromAddr (struct qsockaddr *addr, char *name)
|
|
{
|
|
struct hostent *hostentry;
|
|
|
|
hostentry =
|
|
gethostbyaddr ((char *) &((struct sockaddr_in *) addr)->sin_addr,
|
|
sizeof (struct in_addr), AF_INET);
|
|
|
|
if (hostentry) {
|
|
strncpy (name, (char *) hostentry->h_name, NET_NAMELEN - 1);
|
|
return 0;
|
|
}
|
|
|
|
strcpy (name, UDP_AddrToString (addr));
|
|
return 0;
|
|
}
|
|
|
|
//=============================================================================
|
|
|
|
int
|
|
UDP_GetAddrFromName (char *name, struct qsockaddr *addr)
|
|
{
|
|
struct hostent *hostentry;
|
|
|
|
if (name[0] >= '0' && name[0] <= '9')
|
|
return PartialIPAddress (name, addr);
|
|
|
|
hostentry = gethostbyname (name);
|
|
if (!hostentry)
|
|
return -1;
|
|
|
|
addr->sa_family = AF_INET;
|
|
((struct sockaddr_in *) addr)->sin_port = htons (net_hostport);
|
|
|
|
((struct sockaddr_in *) addr)->sin_addr.s_addr =
|
|
*(int *) hostentry->h_addr_list[0];
|
|
|
|
return 0;
|
|
}
|
|
|
|
//=============================================================================
|
|
|
|
int
|
|
UDP_AddrCompare (struct qsockaddr *addr1, struct qsockaddr *addr2)
|
|
{
|
|
if (addr1->sa_family != addr2->sa_family)
|
|
return -1;
|
|
|
|
if (((struct sockaddr_in *) addr1)->sin_addr.s_addr !=
|
|
((struct sockaddr_in *) addr2)->sin_addr.s_addr)
|
|
return -1;
|
|
|
|
if (((struct sockaddr_in *) addr1)->sin_port !=
|
|
((struct sockaddr_in *) addr2)->sin_port)
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
//=============================================================================
|
|
|
|
int
|
|
UDP_GetSocketPort (struct qsockaddr *addr)
|
|
{
|
|
return ntohs (((struct sockaddr_in *) addr)->sin_port);
|
|
}
|
|
|
|
|
|
int
|
|
UDP_SetSocketPort (struct qsockaddr *addr, int port)
|
|
{
|
|
((struct sockaddr_in *) addr)->sin_port = htons (port);
|
|
return 0;
|
|
}
|
|
|
|
//=============================================================================
|