/* | |
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 the Free Software | |
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
*/ | |
// net_wins.c | |
#include "quakedef.h" | |
#include "winquake.h" | |
extern cvar_t hostname; | |
#define MAXHOSTNAMELEN 256 | |
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; | |
qboolean winsock_lib_initialized; | |
int (PASCAL FAR *pWSAStartup)(WORD wVersionRequired, LPWSADATA lpWSAData); | |
int (PASCAL FAR *pWSACleanup)(void); | |
int (PASCAL FAR *pWSAGetLastError)(void); | |
SOCKET (PASCAL FAR *psocket)(int af, int type, int protocol); | |
int (PASCAL FAR *pioctlsocket)(SOCKET s, long cmd, u_long FAR *argp); | |
int (PASCAL FAR *psetsockopt)(SOCKET s, int level, int optname, | |
const char FAR * optval, int optlen); | |
int (PASCAL FAR *precvfrom)(SOCKET s, char FAR * buf, int len, int flags, | |
struct sockaddr FAR *from, int FAR * fromlen); | |
int (PASCAL FAR *psendto)(SOCKET s, const char FAR * buf, int len, int flags, | |
const struct sockaddr FAR *to, int tolen); | |
int (PASCAL FAR *pclosesocket)(SOCKET s); | |
int (PASCAL FAR *pgethostname)(char FAR * name, int namelen); | |
struct hostent FAR * (PASCAL FAR *pgethostbyname)(const char FAR * name); | |
struct hostent FAR * (PASCAL FAR *pgethostbyaddr)(const char FAR * addr, | |
int len, int type); | |
int (PASCAL FAR *pgetsockname)(SOCKET s, struct sockaddr FAR *name, | |
int FAR * namelen); | |
#include "net_wins.h" | |
int winsock_initialized = 0; | |
WSADATA winsockdata; | |
//============================================================================= | |
static double blocktime; | |
BOOL PASCAL FAR BlockingHook(void) | |
{ | |
MSG msg; | |
BOOL ret; | |
if ((Sys_FloatTime() - blocktime) > 2.0) | |
{ | |
WSACancelBlockingCall(); | |
return FALSE; | |
} | |
/* get the next message, if any */ | |
ret = (BOOL) PeekMessage(&msg, NULL, 0, 0, PM_REMOVE); | |
/* if we got one, process it */ | |
if (ret) { | |
TranslateMessage(&msg); | |
DispatchMessage(&msg); | |
} | |
/* TRUE if we got a message */ | |
return ret; | |
} | |
void WINS_GetLocalAddress() | |
{ | |
struct hostent *local = NULL; | |
char buff[MAXHOSTNAMELEN]; | |
unsigned long addr; | |
if (myAddr != INADDR_ANY) | |
return; | |
if (pgethostname(buff, MAXHOSTNAMELEN) == SOCKET_ERROR) | |
return; | |
blocktime = Sys_FloatTime(); | |
WSASetBlockingHook(BlockingHook); | |
local = pgethostbyname(buff); | |
WSAUnhookBlockingHook(); | |
if (local == NULL) | |
return; | |
myAddr = *(int *)local->h_addr_list[0]; | |
addr = ntohl(myAddr); | |
sprintf(my_tcpip_address, "%d.%d.%d.%d", (addr >> 24) & 0xff, (addr >> 16) & 0xff, (addr >> 8) & 0xff, addr & 0xff); | |
} | |
int WINS_Init (void) | |
{ | |
int i; | |
char buff[MAXHOSTNAMELEN]; | |
char *p; | |
int r; | |
WORD wVersionRequested; | |
HINSTANCE hInst; | |
// initialize the Winsock function vectors (we do this instead of statically linking | |
// so we can run on Win 3.1, where there isn't necessarily Winsock) | |
hInst = LoadLibrary("wsock32.dll"); | |
if (hInst == NULL) | |
{ | |
Con_SafePrintf ("Failed to load winsock.dll\n"); | |
winsock_lib_initialized = false; | |
return -1; | |
} | |
winsock_lib_initialized = true; | |
pWSAStartup = (void *)GetProcAddress(hInst, "WSAStartup"); | |
pWSACleanup = (void *)GetProcAddress(hInst, "WSACleanup"); | |
pWSAGetLastError = (void *)GetProcAddress(hInst, "WSAGetLastError"); | |
psocket = (void *)GetProcAddress(hInst, "socket"); | |
pioctlsocket = (void *)GetProcAddress(hInst, "ioctlsocket"); | |
psetsockopt = (void *)GetProcAddress(hInst, "setsockopt"); | |
precvfrom = (void *)GetProcAddress(hInst, "recvfrom"); | |
psendto = (void *)GetProcAddress(hInst, "sendto"); | |
pclosesocket = (void *)GetProcAddress(hInst, "closesocket"); | |
pgethostname = (void *)GetProcAddress(hInst, "gethostname"); | |
pgethostbyname = (void *)GetProcAddress(hInst, "gethostbyname"); | |
pgethostbyaddr = (void *)GetProcAddress(hInst, "gethostbyaddr"); | |
pgetsockname = (void *)GetProcAddress(hInst, "getsockname"); | |
if (!pWSAStartup || !pWSACleanup || !pWSAGetLastError || | |
!psocket || !pioctlsocket || !psetsockopt || | |
!precvfrom || !psendto || !pclosesocket || | |
!pgethostname || !pgethostbyname || !pgethostbyaddr || | |
!pgetsockname) | |
{ | |
Con_SafePrintf ("Couldn't GetProcAddress from winsock.dll\n"); | |
return -1; | |
} | |
if (COM_CheckParm ("-noudp")) | |
return -1; | |
if (winsock_initialized == 0) | |
{ | |
wVersionRequested = MAKEWORD(1, 1); | |
r = pWSAStartup (MAKEWORD(1, 1), &winsockdata); | |
if (r) | |
{ | |
Con_SafePrintf ("Winsock initialization failed.\n"); | |
return -1; | |
} | |
} | |
winsock_initialized++; | |
// determine my name | |
if (pgethostname(buff, MAXHOSTNAMELEN) == SOCKET_ERROR) | |
{ | |
Con_DPrintf ("Winsock TCP/IP Initialization failed.\n"); | |
if (--winsock_initialized == 0) | |
pWSACleanup (); | |
return -1; | |
} | |
// if the quake hostname isn't set, set it to the machine name | |
if (Q_strcmp(hostname.string, "UNNAMED") == 0) | |
{ | |
// see if it's a text IP address (well, close enough) | |
for (p = buff; *p; p++) | |
if ((*p < '0' || *p > '9') && *p != '.') | |
break; | |
// if it is a real name, strip off the domain; we only want the host | |
if (*p) | |
{ | |
for (i = 0; i < 15; i++) | |
if (buff[i] == '.') | |
break; | |
buff[i] = 0; | |
} | |
Cvar_Set ("hostname", buff); | |
} | |
i = COM_CheckParm ("-ip"); | |
if (i) | |
{ | |
if (i < com_argc-1) | |
{ | |
myAddr = inet_addr(com_argv[i+1]); | |
if (myAddr == INADDR_NONE) | |
Sys_Error ("%s is not a valid IP address", com_argv[i+1]); | |
strcpy(my_tcpip_address, com_argv[i+1]); | |
} | |
else | |
{ | |
Sys_Error ("NET_Init: you must specify an IP address after -ip"); | |
} | |
} | |
else | |
{ | |
myAddr = INADDR_ANY; | |
strcpy(my_tcpip_address, "INADDR_ANY"); | |
} | |
if ((net_controlsocket = WINS_OpenSocket (0)) == -1) | |
{ | |
Con_Printf("WINS_Init: Unable to open control socket\n"); | |
if (--winsock_initialized == 0) | |
pWSACleanup (); | |
return -1; | |
} | |
((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((unsigned short)net_hostport); | |
Con_Printf("Winsock TCP/IP Initialized\n"); | |
tcpipAvailable = true; | |
return net_controlsocket; | |
} | |
//============================================================================= | |
void WINS_Shutdown (void) | |
{ | |
WINS_Listen (false); | |
WINS_CloseSocket (net_controlsocket); | |
if (--winsock_initialized == 0) | |
pWSACleanup (); | |
} | |
//============================================================================= | |
void WINS_Listen (qboolean state) | |
{ | |
// enable listening | |
if (state) | |
{ | |
if (net_acceptsocket != -1) | |
return; | |
WINS_GetLocalAddress(); | |
if ((net_acceptsocket = WINS_OpenSocket (net_hostport)) == -1) | |
Sys_Error ("WINS_Listen: Unable to open accept socket\n"); | |
return; | |
} | |
// disable listening | |
if (net_acceptsocket == -1) | |
return; | |
WINS_CloseSocket (net_acceptsocket); | |
net_acceptsocket = -1; | |
} | |
//============================================================================= | |
int WINS_OpenSocket (int port) | |
{ | |
int newsocket; | |
struct sockaddr_in address; | |
u_long _true = 1; | |
if ((newsocket = psocket (PF_INET, SOCK_DGRAM, IPPROTO_UDP)) == -1) | |
return -1; | |
if (pioctlsocket (newsocket, FIONBIO, &_true) == -1) | |
goto ErrorReturn; | |
address.sin_family = AF_INET; | |
address.sin_addr.s_addr = myAddr; | |
address.sin_port = htons((unsigned short)port); | |
if( bind (newsocket, (void *)&address, sizeof(address)) == 0) | |
return newsocket; | |
Sys_Error ("Unable to bind to %s", WINS_AddrToString((struct qsockaddr *)&address)); | |
ErrorReturn: | |
pclosesocket (newsocket); | |
return -1; | |
} | |
//============================================================================= | |
int WINS_CloseSocket (int socket) | |
{ | |
if (socket == net_broadcastsocket) | |
net_broadcastsocket = 0; | |
return pclosesocket (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 = Q_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 WINS_Connect (int socket, struct qsockaddr *addr) | |
{ | |
return 0; | |
} | |
//============================================================================= | |
int WINS_CheckNewConnections (void) | |
{ | |
char buf[4096]; | |
if (net_acceptsocket == -1) | |
return -1; | |
if (precvfrom (net_acceptsocket, buf, sizeof(buf), MSG_PEEK, NULL, NULL) > 0) | |
{ | |
return net_acceptsocket; | |
} | |
return -1; | |
} | |
//============================================================================= | |
int WINS_Read (int socket, byte *buf, int len, struct qsockaddr *addr) | |
{ | |
int addrlen = sizeof (struct qsockaddr); | |
int ret; | |
ret = precvfrom (socket, buf, len, 0, (struct sockaddr *)addr, &addrlen); | |
if (ret == -1) | |
{ | |
int errno = pWSAGetLastError(); | |
if (errno == WSAEWOULDBLOCK || errno == WSAECONNREFUSED) | |
return 0; | |
} | |
return ret; | |
} | |
//============================================================================= | |
int WINS_MakeSocketBroadcastCapable (int socket) | |
{ | |
int i = 1; | |
// make this socket broadcast capable | |
if (psetsockopt(socket, SOL_SOCKET, SO_BROADCAST, (char *)&i, sizeof(i)) < 0) | |
return -1; | |
net_broadcastsocket = socket; | |
return 0; | |
} | |
//============================================================================= | |
int WINS_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"); | |
WINS_GetLocalAddress(); | |
ret = WINS_MakeSocketBroadcastCapable (socket); | |
if (ret == -1) | |
{ | |
Con_Printf("Unable to make socket broadcast capable\n"); | |
return ret; | |
} | |
} | |
return WINS_Write (socket, buf, len, &broadcastaddr); | |
} | |
//============================================================================= | |
int WINS_Write (int socket, byte *buf, int len, struct qsockaddr *addr) | |
{ | |
int ret; | |
ret = psendto (socket, buf, len, 0, (struct sockaddr *)addr, sizeof(struct qsockaddr)); | |
if (ret == -1) | |
if (pWSAGetLastError() == WSAEWOULDBLOCK) | |
return 0; | |
return ret; | |
} | |
//============================================================================= | |
char *WINS_AddrToString (struct qsockaddr *addr) | |
{ | |
static char buffer[22]; | |
int haddr; | |
haddr = ntohl(((struct sockaddr_in *)addr)->sin_addr.s_addr); | |
sprintf(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 WINS_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((unsigned short)hp); | |
return 0; | |
} | |
//============================================================================= | |
int WINS_GetSocketAddr (int socket, struct qsockaddr *addr) | |
{ | |
int addrlen = sizeof(struct qsockaddr); | |
unsigned int a; | |
Q_memset(addr, 0, sizeof(struct qsockaddr)); | |
pgetsockname(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 WINS_GetNameFromAddr (struct qsockaddr *addr, char *name) | |
{ | |
struct hostent *hostentry; | |
hostentry = pgethostbyaddr ((char *)&((struct sockaddr_in *)addr)->sin_addr, sizeof(struct in_addr), AF_INET); | |
if (hostentry) | |
{ | |
Q_strncpy (name, (char *)hostentry->h_name, NET_NAMELEN - 1); | |
return 0; | |
} | |
Q_strcpy (name, WINS_AddrToString (addr)); | |
return 0; | |
} | |
//============================================================================= | |
int WINS_GetAddrFromName(char *name, struct qsockaddr *addr) | |
{ | |
struct hostent *hostentry; | |
if (name[0] >= '0' && name[0] <= '9') | |
return PartialIPAddress (name, addr); | |
hostentry = pgethostbyname (name); | |
if (!hostentry) | |
return -1; | |
addr->sa_family = AF_INET; | |
((struct sockaddr_in *)addr)->sin_port = htons((unsigned short)net_hostport); | |
((struct sockaddr_in *)addr)->sin_addr.s_addr = *(int *)hostentry->h_addr_list[0]; | |
return 0; | |
} | |
//============================================================================= | |
int WINS_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 WINS_GetSocketPort (struct qsockaddr *addr) | |
{ | |
return ntohs(((struct sockaddr_in *)addr)->sin_port); | |
} | |
int WINS_SetSocketPort (struct qsockaddr *addr, int port) | |
{ | |
((struct sockaddr_in *)addr)->sin_port = htons((unsigned short)port); | |
return 0; | |
} | |
//============================================================================= |