quakeforge-old/uquake/mplpc.c

/*
Copyright (C) 1996-1997 Id Software, Inc.
Portions Copyright (C) 1999,2000  Nelson Rush.

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.

*/
#include <go32.h>
#include "mpdosock.h"
#include <common_quakedef.h>

//#include "types.h"
typedef unsigned char BYTE;
typedef unsigned short WORD;
typedef unsigned long DWORD;

//#include "lpc.h"
typedef struct {
	short	version;		// version of LPC requested
	short	sizeOfArgs;		// size of arguments
	short	service;		// service # requested
	char	Data[1];		// data
} LPCData;

typedef struct {
	short	version;		// LPC version
	short	sizeOfReturn;	// return data size
	short	error;			// any error codes
	short	noRet;			// number of returns
	char	Data[1];		// data
} LPCReturn;

//#include "services.h"
#define MAXSOCKETS 20

// services
#define LPC_SOCKBIND            4
#define LPC_SOCKGETHOSTBYNAME   5
#define LPC_SOCKGETHOSTNAME     6
#define LPC_SOCKGETHOSTBYADDR   7
#define LPC_SOCKCLOSE           8
#define LPC_SOCKSOCKET          9
#define LPC_SOCKRECVFROM        10
#define LPC_SOCKSENDTO          11
#define LPC_SOCKIOCTL           12
#define LPC_SOCKGETSOCKNAME     13
#define LPC_SOCKFLUSH           14
#define LPC_SOCKSETOPT          15
#define LPC_SOCKGETLASTERROR    16
#define LPC_SOCKINETADDR        17

// htons, ntohs, htonl, ntohl implemented locally

// errors
#define LPC_UNRECOGNIZED_SERVICE  -1
#define LPC_NOERROR                0

// structures for support
typedef struct {
	SOCKET	s;
	int		namelen;
	char	name[1];
} BindArgs;

typedef struct {
	SOCKET	s;
	long	cmd;
	char	data[1];
} IoctlArgs;

typedef struct {
	int		retVal;
	int		namelen;
	char	name[1];
} GetSockNameRet;

typedef GetSockNameRet GetHostNameRet;

typedef struct {
	int		retVal;
	int		h_addr_0;		// that's the only important value
} GetHostByNameRet;

typedef struct {
	int		len;
	int		type;
	char	addr[1];
} GetHostByAddrArgs;

typedef struct {
	int		retVal;
	char	h_name[1];		// h_name is the only important value
} GetHostByAddrRet;

typedef struct {
	SOCKET	s;
	int		flags;
} RecvFromArgs;

typedef struct {
	int		retVal;
	int		errCode;
	int		len;			// message len
	struct sockaddr	sockaddr;
	int		sockaddrlen;
	char	Data[1];
} RecvFromRet;

typedef struct {
	SOCKET	s;
	int		flags;
	int		len;
	struct sockaddr	sockaddr;
	int		sockaddrlen;
	char	Data[1];
} SendToArgs;

typedef struct {
	int		retVal;
	int		errCode;
} SendToRet;

typedef struct {
	int		bufflen;
	SOCKET	s;
	int		len;
	int		sockaddrlen;
	struct sockaddr	address;
	char	data[1];
} SocketChannelData;

typedef struct {
	int		af;
	int		type;
	int		protocol;
} SocketArgs;

typedef struct {
	SOCKET	s;
	int		len;
	int		flags;
	int		addrlen;
	struct sockaddr	addr;
	char	data[1];
} WinSockData;

typedef struct {
	SOCKET	s;
	int		level;
	int		optname;
	int		optlen;
	char	optval[1];
} SetSockOptArgs;

typedef struct {
	SOCKET	sock[MAXSOCKETS];
} SocketMap;

//#include "rtq.h"
#define RTQ_NODE struct rtq_node

RTQ_NODE
{
	RTQ_NODE	*self;		// Ring zero address of this node
	RTQ_NODE	*left;		// Ring zero address of preceding node
	RTQ_NODE	*right;		// Ring zero address of succeding node
	BYTE *		rtqDatum;	// Ring 3 Datum of Buffer (start of preface)
	BYTE *		rtqInsert;	// Ring 3 insertion position
	WORD		rtqLen;		// Length of buffer, excluding preface
	WORD		rtqUpCtr;	// Up Counter of bytes used so far
	WORD		rtqQCtr;	// number of nodes attached
	WORD		padding;	// DWORD alignment
};

#define RTQ_PARAM_MOVENODE struct rtq_param_movenode
RTQ_PARAM_MOVENODE
{
	WORD	rtqFromDQ;
	WORD	rtqToDQ;
};

RTQ_NODE* rtq_fetch(RTQ_NODE*, RTQ_NODE*);	// To, From

//#include "mplib.h"
// give up time slice
void Yield(void);
void MGenWakeupDll(void);

// post a message to win32 side
void PostWindowsMessage(void);

// get # of items on qNo
int MGenGetQueueCtr(int qNo);

// move first node from qFrom to qTo
RTQ_NODE *MGenMoveTo(int qFrom, int qTo);

// get first node from q
RTQ_NODE *MGenGetNode(int q);

// get master node, returning size of RTQ_NODE for size verification
RTQ_NODE *MGenGetMasterNode(unsigned *size);

// move all nodes from qFrom to qTo
RTQ_NODE *MGenFlushNodes(int qFrom, int qTo);

// count number of nodes in queues designated by bitmask
// lowerOrderBits == 0..31, upperOrderBits == 32-63
int MGenMCount(unsigned lowerOrderBits, unsigned upperOrderBits);

// perform consistency check on chunnel address space
int MGenSanityCheck(void);

#include <stdio.h>
#include <sys/farptr.h>

extern short flat_selector;

#define SOCKET_MAP_QUEUE  41

#define IDLE_QUEUE    44
#define REC_QUEUE     45
#define SEND_QUEUE    46

//  queue sizes
#define FREEQBASE      58
#define FREEQ64        58
#define FREEQ128       59
#define FREEQ256       60
#define FREEQ512       61
#define FREEQ1024      62
#define FREEQ2048      63

#define NFREEQ         6

#define QLIMIT         10

#define PRIVATEQ       50

#define FARPKL(x)  (_farnspeekl((unsigned long) x))
#define FARPKB(x)  (_farnspeekb((unsigned long) x))
#define FARPKS(x)  (_farnspeekw((unsigned long) x))

#define FARPOKL(x, y) (_farnspokel((unsigned long) x, (unsigned long) y))
#define FARPOKB(x, y) (_farnspokeb((unsigned long) x, (unsigned char) y))

int Qsizes[] = { 64, 128, 256, 512, 1024, 2048 };

int SocketError = 0;

SocketMap *SockMap;

#define HOSTENT_ALIAS_LIMIT    5
#define HOSTENT_STRLEN_LIMIT   50
#define HOSTENT_ADDR_LIST_LIMIT   5

struct hostent  HostEnt;

char HostEnt_hname[HOSTENT_STRLEN_LIMIT];
char *HostEnt_h_aliases[HOSTENT_ALIAS_LIMIT];
char HostEnt_names[HOSTENT_ALIAS_LIMIT][HOSTENT_STRLEN_LIMIT];
struct in_addr* HostEnt_addr_list[HOSTENT_ADDR_LIST_LIMIT];
struct in_addr HostEnt_addrs[HOSTENT_ADDR_LIST_LIMIT];

void
fmemcpyto ( void *to, const void *from, int length )
{
	movedata(_my_ds(), (unsigned)from, flat_selector, (unsigned)to, length);
}

void
fmemcpyfrom ( void *to, const void *from, int length )
{
	movedata(flat_selector, (unsigned)from, _my_ds(), (unsigned)to, length);
}

void
fstrcpyto ( char *to, const char *from )
{
	while (*from) {
		FARPOKB(to, *from);
		to++; from++;
	}
	FARPOKB(to, 0);
}

void
fstrncpyto ( char *to, const char *from, int len )
{
	while (*from && len) {
		FARPOKB(to, *from);
		to++; from++; len--;
	}
	FARPOKB(to, 0);
}

void
fstrcpyfrom ( char *to, const char *from )
{
	while (FARPKB(from)) {
		*to = FARPKB(from);
		from++; to++;
	}
	*to = 0;
}

void
fstrncpyfrom ( char *to, const char *from, int len )
{
	while (FARPKB(from) && len) {
		*to = FARPKB(from);
		from++; to++; len--;
	}
	*to = 0;
}

void
GetSocketMap ( void )
{
	RTQ_NODE *n = MGenGetNode(SOCKET_MAP_QUEUE);

	SockMap = (SocketMap *) FARPKL(&n->rtqDatum);
}

void *
GetFreeBufferToQueue ( int q, int bufSize )
{
	int	i;

	for (i = 0; i < NFREEQ; i++) {
		if (Qsizes[i] >= bufSize && MGenGetQueueCtr(i+FREEQBASE)) {
			RTQ_NODE *n = MGenMoveTo(i+FREEQBASE, q);
			if (!n)
				continue;
			FARPOKL(&n->rtqUpCtr, bufSize);
			return (void *) FARPKL(&n->rtqDatum);
		}
	}

	return 0;
}

void
FreeBufferFromQueue ( int q )
{
	int	i;
	RTQ_NODE *n = MGenGetNode(q);

	for (i = 0; i < NFREEQ; i++) {
		if (Qsizes[i] == FARPKS(&n->rtqLen)) {
			MGenMoveTo(q, i+FREEQBASE);
			return;
		}
	}
}

void
SetLPCData ( LPCData *lpc )
{
	FARPOKL(&(lpc->version), 1);
	FARPOKL(&(lpc->sizeOfArgs), 0);
	FARPOKL(&(lpc->service), 0);
}

int
bind ( SOCKET s, const struct sockaddr *name, int namelen )
{
	RTQ_NODE	*n = MGenGetNode(IDLE_QUEUE);
	LPCData		*p;
	LPCReturn	*r;
	BindArgs	*bargs;
	int			retVal;

	_farsetsel(flat_selector);
	SocketError = 0;
	p = (LPCData *) FARPKL(&n->rtqDatum);
	SetLPCData(p);
	FARPOKL(&p->service, LPC_SOCKBIND);
	bargs = (BindArgs *) p->Data;
	FARPOKL(&bargs->s, s);
	FARPOKL(&bargs->namelen, namelen);
	fmemcpyto(bargs->name, name, namelen);
	MGenMoveTo(IDLE_QUEUE, SEND_QUEUE);
	PostWindowsMessage();

	while ((n = MGenGetNode(REC_QUEUE)) == 0)
		Yield();

	r = (LPCReturn *) FARPKL(&n->rtqDatum);

	if (FARPKS(&r->error) != LPC_NOERROR) {
		return -1;
	}

	retVal = FARPKL(r->Data);

	// get ready for next call
	MGenMoveTo(REC_QUEUE, IDLE_QUEUE);

	return retVal;
}

int
closesocket ( SOCKET s )
{
	RTQ_NODE	*n = MGenGetNode(IDLE_QUEUE);
	LPCData		*p;
	LPCReturn	*r;
	int			retVal;

	_farsetsel(flat_selector);
	SocketError = 0;
	p = (LPCData *) FARPKL(&n->rtqDatum);
	SetLPCData(p);
	FARPOKL(&p->service, LPC_SOCKCLOSE);
	FARPOKL(p->Data, s);

	MGenMoveTo(IDLE_QUEUE, SEND_QUEUE);
	PostWindowsMessage();

	while ((n = MGenGetNode(REC_QUEUE)) == 0)
		Yield();

	r = (LPCReturn *) FARPKL(&n->rtqDatum);

	if (FARPKS(&r->error) != LPC_NOERROR) {
		return -1;
	}

	retVal = FARPKL(r->Data);

	// get ready for next call
	MGenMoveTo(REC_QUEUE, IDLE_QUEUE);

	return retVal;
}

void
ZapHostEnt ( void )
{
	// do nothing
}

void
ReconstructHostEnt ( struct hostent *s, void *flattened )
{
	struct hostent	*old = (struct hostent *) flattened;
	int				i;
	char			**ptr;

	s->h_name = HostEnt_hname;
	fstrncpyfrom(s->h_name, (char *) FARPKL(&old->h_name), HOSTENT_STRLEN_LIMIT-1);
	s->h_name[HOSTENT_STRLEN_LIMIT-1] = 0;

	s->h_aliases = HostEnt_h_aliases;
	ptr = (char **) FARPKL(&old->h_aliases);
	for (i = 0; i < (HOSTENT_ALIAS_LIMIT-1) && FARPKL(ptr); i++, ptr++) {
		s->h_aliases[i] = HostEnt_names[i];
//		fstrncpyfrom(s->h_aliases[i], (void *) FARPKL(ptr), HOSTENT_STRLEN_LIMIT-1);
		s->h_aliases[i][HOSTENT_STRLEN_LIMIT-1] = 0;
	}
	s->h_aliases[i] = 0;

	s->h_addrtype = FARPKS(&old->h_addrtype);
	s->h_length = FARPKS(&old->h_length);

	if (FARPKS(&old->h_length) != sizeof(struct in_addr)) {
		printf("Error!\n");
		exit(0);
	}

	s->h_addr_list = (char **) HostEnt_addr_list;
	ptr = (char **) FARPKL(&old->h_addr_list);
	for (i = 0; i < (HOSTENT_ADDR_LIST_LIMIT - 1) && FARPKL(ptr); i++, ptr++) {
		s->h_addr_list[i] = (char *) &(HostEnt_addrs[i]);
		fmemcpyfrom(s->h_addr_list[i], (void *) FARPKL(ptr), s->h_length);
	}
	s->h_addr_list[i] = 0;
}


int
getsockname ( SOCKET s, struct sockaddr *name, int *namelen )
{
	RTQ_NODE	*n = MGenGetNode(IDLE_QUEUE);
	LPCData		*p;
	LPCReturn	*r;
	GetSockNameRet	*ret;
	int			retVal;

	SocketError = 0;
	_farsetsel(flat_selector);
	p = (LPCData *) FARPKL(&n->rtqDatum);
	SetLPCData(p);
	FARPOKL(&p->service, LPC_SOCKGETSOCKNAME);
	FARPOKL(p->Data, s);

	MGenMoveTo(IDLE_QUEUE, SEND_QUEUE);
	PostWindowsMessage();

	while ((n = MGenGetNode(REC_QUEUE)) == 0)
		Yield();

	r = (LPCReturn *) FARPKL(&n->rtqDatum);

	if (FARPKS(&r->error) != LPC_NOERROR) {
		return -1;
	}

	ret = (GetSockNameRet *) r->Data;
	retVal = FARPKL(&ret->retVal);
	fmemcpyfrom(name, ret->name, FARPKL(&ret->namelen));
	*namelen = FARPKL(&ret->namelen);

	// get ready for next call
	MGenMoveTo(REC_QUEUE, IDLE_QUEUE);

	return retVal;
}

int
gethostname ( char *name, int namelen )
{
	RTQ_NODE	*n;
	LPCData		*p;
	LPCReturn	*r;
	GetHostNameRet	*ret;
	int			retVal;
	char		*s;

	_farsetsel(flat_selector);
	SocketError = 0;
	n = (RTQ_NODE *) MGenGetNode(IDLE_QUEUE);
	p = (LPCData *) FARPKL(&n->rtqDatum);
	SetLPCData(p);
	FARPOKL(&p->service,LPC_SOCKGETHOSTNAME);
	MGenMoveTo(IDLE_QUEUE, SEND_QUEUE);
	PostWindowsMessage();

	while ((n = (RTQ_NODE *) (MGenGetNode(REC_QUEUE))) == 0)
		Yield();

	r = (LPCReturn *) FARPKL(&n->rtqDatum);

	if (FARPKS(&r->error) != LPC_NOERROR) {
		return -1;
	}

	ret = (GetHostNameRet *) r->Data;

	retVal = FARPKL(&ret->retVal);

	s = ret->name;

	fstrncpyfrom(name, s, namelen);

#if 0
	len = strlen(ret->name);

	if (len > namelen)
		memcpy(name, ret->name, ret->namelen);
	else
		strcpy(name, ret->name);
#endif

	// get ready for next call
	MGenMoveTo(REC_QUEUE, IDLE_QUEUE);

	return retVal;
}

struct hostent *
gethostbyname ( const char *name )
{
	RTQ_NODE	*n = MGenGetNode(IDLE_QUEUE);
	LPCData		*p;
	LPCReturn	*r;
	struct hostent	*retVal;

	_farsetsel(flat_selector);
	SocketError = 0;
	p = (LPCData *) FARPKL(&n->rtqDatum);
	SetLPCData(p);
	FARPOKL(&p->service, LPC_SOCKGETHOSTBYNAME);
	fstrcpyto(p->Data, name);

	MGenMoveTo(IDLE_QUEUE, SEND_QUEUE);
	PostWindowsMessage();

	while ((n = MGenGetNode(REC_QUEUE)) == 0)
		Yield();

	r = (LPCReturn *) FARPKL(&n->rtqDatum);
	retVal = (struct hostent *) r->Data;

	if (FARPKL(&retVal->h_name) == 0) {
		retVal = 0;
	} else {
		ZapHostEnt();
		ReconstructHostEnt(&HostEnt, (void *) retVal);
		retVal = &HostEnt;
	}

	// get ready for next call
	MGenMoveTo(REC_QUEUE, IDLE_QUEUE);

	return retVal;
}

struct hostent *
gethostbyaddr ( const char *addr, int len, int type )
{
	RTQ_NODE	*n = MGenGetNode(IDLE_QUEUE);
	LPCData		*p;
	LPCReturn	*r;
	GetHostByAddrArgs	*args;
	struct hostent	*retVal;

	SocketError = 0;
	_farsetsel(flat_selector);
	p = (LPCData *) FARPKL(&n->rtqDatum);
	SetLPCData(p);
	FARPOKL(&p->service, LPC_SOCKGETHOSTBYADDR);
	args = (GetHostByAddrArgs *) p->Data;
	FARPOKL(&args->len, len);
	FARPOKL(&args->type, type);
	fmemcpyto(args->addr, addr, len);

	MGenMoveTo(IDLE_QUEUE, SEND_QUEUE);
	PostWindowsMessage();

	while ((n = MGenGetNode(REC_QUEUE)) == 0)
		Yield();
	r = (LPCReturn *) FARPKL(&n->rtqDatum);
	retVal = (struct hostent *) r->Data;

	if (FARPKL(&retVal->h_name) == 0) {
		retVal = 0;
	} else {
		ZapHostEnt();

		ReconstructHostEnt(&HostEnt, (void *) retVal);
		retVal = &HostEnt;
	}

	// get ready for next call
	MGenMoveTo(REC_QUEUE, IDLE_QUEUE);

	return retVal;
}


SOCKET
socket ( int af, int type, int protocol )
{
	RTQ_NODE	*n = MGenGetNode(IDLE_QUEUE);
	LPCData		*p;
	LPCReturn	*r;
	SocketArgs	*args;
	int			retVal;

	_farsetsel(flat_selector);
	SocketError = 0;
	p = (LPCData *) FARPKL(&n->rtqDatum);
	SetLPCData(p);
	FARPOKL(&p->service, LPC_SOCKSOCKET);
	args = (SocketArgs *) p->Data;
	FARPOKL(&args->af, af);
	FARPOKL(&args->type, type);
	FARPOKL(&args->protocol, protocol);

	MGenMoveTo(IDLE_QUEUE, SEND_QUEUE);
	PostWindowsMessage();

	while ((n = MGenGetNode(REC_QUEUE)) == 0)
		Yield();

	r = (LPCReturn *) FARPKL(&n->rtqDatum);

	if (FARPKS(&r->error) != LPC_NOERROR) {
		return -1;
	}

	retVal = FARPKL(r->Data);

	// get ready for next call
	MGenMoveTo(REC_QUEUE, IDLE_QUEUE);

	return retVal;
}

void
sockets_flush ( void )
{
	RTQ_NODE	*n = MGenGetNode(IDLE_QUEUE);
	LPCData		*p;

	SocketError = 0;
	p = (LPCData *) FARPKL(&n->rtqDatum);
	SetLPCData(p);
	FARPOKL(&p->service, LPC_SOCKFLUSH);

	MGenMoveTo(IDLE_QUEUE, SEND_QUEUE);
	PostWindowsMessage();

	while ((n = MGenGetNode(REC_QUEUE)) == 0)
		Yield();

	MGenMoveTo(REC_QUEUE, IDLE_QUEUE);
}

int
recvfrom ( SOCKET s, char *buf, int len, int flags, struct sockaddr *from,
	int *fromlen )
{
	int			i;
	RTQ_NODE	*n;
	WinSockData	*data;
	int			bytesRead;

	SocketError = 0;
	_farsetsel(flat_selector);
	if (!SockMap)
		GetSocketMap();

	for (i = 0; i < MAXSOCKETS; i++) {
		if (FARPKL(&(SockMap->sock[i])) == s)
			break;
	}

	if (i == MAXSOCKETS)
		return SOCKET_ERROR;

	// pick up node
	n = MGenGetNode(i);
	if (n == 0) {
		SocketError = WSAEWOULDBLOCK;
		return -1;
	}

	data = (WinSockData *) FARPKL(&n->rtqDatum);
	bytesRead = FARPKL(&data->len);

	if (from) {
		fmemcpyfrom(from, &data->addr, sizeof(struct sockaddr));
	}

	if (fromlen) {
		*fromlen = FARPKL(&data->addrlen);
	}

	fmemcpyfrom(buf, data->data, len > bytesRead ? bytesRead : len);

	if ((flags & MSG_PEEK) == 0) {
		FreeBufferFromQueue(i);
	}

	return bytesRead;
}

int
sendto ( SOCKET s, const char *buf, int len, int flags, const struct sockaddr *to, int tolen )
{
	int i;
	int outQ;
	WinSockData *data;

	SocketError = 0;
	_farsetsel(flat_selector);
	if (!SockMap)
		GetSocketMap();

	for (i = 0; i < MAXSOCKETS; i++) {
		if (FARPKL(&SockMap->sock[i]) == s) {
			break;
		}
	}

	if (i == MAXSOCKETS) {
		SocketError = WSAENOTSOCK;
		return SOCKET_ERROR;
	}

	outQ = i + MAXSOCKETS;

	if (MGenGetQueueCtr(outQ) >= QLIMIT) {
		SocketError = WSAEWOULDBLOCK;
		return SOCKET_ERROR;
	}

	data = GetFreeBufferToQueue(PRIVATEQ, len + sizeof(WinSockData));

	if (!data) {
		SocketError = WSAEWOULDBLOCK;
		return SOCKET_ERROR;
	}

	FARPOKL(&data->s, s);
	FARPOKL(&data->len, len);
	if (to) {
		fmemcpyto(&data->addr, to, tolen);
		FARPOKL(&data->addrlen, tolen);
	} else {
		FARPOKL(&data->addrlen, 0);
	}

	FARPOKL(&data->flags, flags);

	fmemcpyto(data->data, buf, len);

	MGenMoveTo(PRIVATEQ, outQ);

	return len;
}

int
ioctlsocket ( SOCKET s, long cmd, unsigned long *argp )
{
	RTQ_NODE	*n = MGenGetNode(IDLE_QUEUE);
	LPCData		*p;
	LPCReturn	*r;
	IoctlArgs	*args;
	int			retVal;

	SocketError = 0;
	_farsetsel(flat_selector);
	p = (LPCData *) FARPKL(&n->rtqDatum);
	SetLPCData(p);
	FARPOKL(&p->service, LPC_SOCKIOCTL);
	args = (IoctlArgs *) p->Data;
	FARPOKL(&args->s, s);
	FARPOKL(&args->cmd, cmd);

	switch(cmd) {
	case FIONBIO:
		FARPOKL(args->data, *argp);
		break;
	default:
		return SOCKET_ERROR;
	}

	MGenMoveTo(IDLE_QUEUE, SEND_QUEUE);
	PostWindowsMessage();

	while ((n = MGenGetNode(REC_QUEUE)) == 0)
		Yield();

	r = (LPCReturn *) FARPKL(&n->rtqDatum);

	retVal = FARPKL(r->Data);

	// get ready for next call
	MGenMoveTo(REC_QUEUE, IDLE_QUEUE);

	return retVal;
}

int
setsockopt ( SOCKET s, int level, int optname, const char *optval, int optlen )
{
	RTQ_NODE	*n = MGenGetNode(IDLE_QUEUE);
	LPCData		*p;
	LPCReturn	*r;
	SetSockOptArgs	*args;
	int			retVal;

	SocketError = 0;
	_farsetsel(flat_selector);
	p = (LPCData *) FARPKL(&n->rtqDatum);
	SetLPCData(p);
	FARPOKL(&p->service, LPC_SOCKSETOPT);
	args = (SetSockOptArgs *) p->Data;
	FARPOKL(&args->s, s);
	FARPOKL(&args->level, level);
	FARPOKL(&args->optname, optname);
	FARPOKL(&args->optlen, optlen);
	fmemcpyto(args->optval, optval, optlen);

	MGenMoveTo(IDLE_QUEUE, SEND_QUEUE);
	PostWindowsMessage();

	while ((n = MGenGetNode(REC_QUEUE)) == 0)
		Yield();

	r = (LPCReturn *) FARPKL(&n->rtqDatum);

	retVal = FARPKL(r->Data);

	// get ready for next call
	MGenMoveTo(REC_QUEUE, IDLE_QUEUE);

	return retVal;
}

int
WSAGetLastError ( void )
{
	RTQ_NODE	*n = MGenGetNode(IDLE_QUEUE);
	LPCData		*p;
	LPCReturn	*r;
	int			retVal;

	_farsetsel(flat_selector);
	if (SocketError) {
		int err = SocketError;

		SocketError = 0;
		return err;
	}

	p = (LPCData *) FARPKL(&n->rtqDatum);
	SetLPCData(p);
	FARPOKL(&p->service, LPC_SOCKGETLASTERROR);

	MGenMoveTo(IDLE_QUEUE, SEND_QUEUE);
	PostWindowsMessage();

	while ((n = MGenGetNode(REC_QUEUE)) == 0)
		Yield();

	r = (LPCReturn *) FARPKL(&n->rtqDatum);

	retVal = FARPKL(r->Data);

	// get ready for next call
	MGenMoveTo(REC_QUEUE, IDLE_QUEUE);

	return retVal;
}

unsigned long
inet_addr ( const char *cp )
{
	int ret;
	unsigned int ha1, ha2, ha3, ha4;
	unsigned long ipaddr;

	ret = sscanf(cp, "%d.%d.%d.%d", &ha1, &ha2, &ha3, &ha4);
	if (ret != 4)
		return -1;
	ipaddr = (ha1 << 24) | (ha2 << 16) | (ha3 << 8) | ha4;
	return ipaddr;
#if 0
	RTQ_NODE	*n = MGenGetNode(IDLE_QUEUE);
	LPCData		*p;
	LPCReturn	*r;
	int			retVal;

	SocketError = 0;
	_farsetsel(flat_selector);
	p = (LPCData *) FARPKL(&n->rtqDatum);
	SetLPCData(p);
	FARPOKL(&p->service, LPC_SOCKINETADDR);

	fstrcpyto(p->Data, cp);

	MGenMoveTo(IDLE_QUEUE, SEND_QUEUE);
	PostWindowsMessage();

	while ((n = MGenGetNode(REC_QUEUE)) == 0)
		Yield();

	r = (LPCReturn *) FARPKL(&n->rtqDatum);

	if (FARPKS(&r->error) != LPC_NOERROR) {
		return -1;
	}

	retVal = FARPKL(r->Data);

	// get ready for next call
	MGenMoveTo(REC_QUEUE, IDLE_QUEUE);

	return retVal;
#endif
}

char *
inet_ntoa ( struct in_addr in )
{
	static char buf [32];

	snprintf(buf, sizeof(buf), "%u.%u.%u.%u", in.S_un.S_un_b.s_b1, in.S_un.S_un_b.s_b2, in.S_un.S_un_b.s_b3, in.S_un.S_un_b.s_b4);
	return buf;
}