js_socket.c

/* Synchronet JavaScript "Socket" Object */

/****************************************************************************
 * @format.tab-size 4		(Plain Text/Source Code File Header)			*
 * @format.use-tabs true	(see http://www.synchro.net/ptsc_hdr.html)		*
 *																			*
 * Copyright Rob Swindell - http://www.synchro.net/copyright.html			*
 *																			*
 * 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.					*
 * See the GNU General Public License for more details: gpl.txt or			*
 * http://www.fsf.org/copyleft/gpl.html										*
 *																			*
 * For Synchronet coding style and modification guidelines, see				*
 * http://www.synchro.net/source.html										*
 *																			*
 * Note: If this box doesn't appear square, then you need to fix your tabs.	*
 ****************************************************************************/

#include <cryptlib.h>

#include "sbbs.h"
#include "js_socket.h"
#include "js_request.h"
#include "multisock.h"
#include "ssl.h"

#ifdef JAVASCRIPT

static void dbprintf(BOOL error, js_socket_private_t* p, char* fmt, ...);
static bool do_CryptFlush(js_socket_private_t *p);
static int do_cryptAttribute(const CRYPT_CONTEXT session, CRYPT_ATTRIBUTE_TYPE attr, int val);
static int do_cryptAttributeString(const CRYPT_CONTEXT session, CRYPT_ATTRIBUTE_TYPE attr, void *val, int len);
static void do_js_close(JSContext *cx, js_socket_private_t *p, bool finalize);
static BOOL js_DefineSocketOptionsArray(JSContext *cx, JSObject *obj, int type);
static JSBool js_accept(JSContext *cx, uintN argc, jsval *arglist);
static JSBool js_bind(JSContext *cx, uintN argc, jsval *arglist);
static JSBool js_close(JSContext *cx, uintN argc, jsval *arglist);
static JSBool js_connect(JSContext *cx, uintN argc, jsval *arglist);
static void js_finalize_socket(JSContext *cx, JSObject *obj);
static JSBool js_ioctlsocket(JSContext *cx, uintN argc, jsval *arglist);
static JSBool js_listen(JSContext *cx, uintN argc, jsval *arglist);
static js_callback_t * js_get_callback(JSContext *cx);
static JSBool js_getsockopt(JSContext *cx, uintN argc, jsval *arglist);
static JSBool js_peek(JSContext *cx, uintN argc, jsval *arglist);
static JSBool js_poll(JSContext *cx, uintN argc, jsval *arglist);
static ushort js_port(JSContext* cx, jsval val, int type);
static JSBool js_recv(JSContext *cx, uintN argc, jsval *arglist);
static JSBool js_recvbin(JSContext *cx, uintN argc, jsval *arglist);
static JSBool js_recvfrom(JSContext *cx, uintN argc, jsval *arglist);
static JSBool js_recvline(JSContext *cx, uintN argc, jsval *arglist);
static JSBool js_send(JSContext *cx, uintN argc, jsval *arglist);
static JSBool js_sendbin(JSContext *cx, uintN argc, jsval *arglist);
static JSBool js_sendfile(JSContext *cx, uintN argc, jsval *arglist);
static JSBool js_sendline(JSContext *cx, uintN argc, jsval *arglist);
static JSBool js_sendto(JSContext *cx, uintN argc, jsval *arglist);
static JSBool js_setsockopt(JSContext *cx, uintN argc, jsval *arglist);
static int js_sock_read_check(js_socket_private_t *p, time_t start, int32 timeout, int i);
static JSBool js_socket_constructor(JSContext *cx, uintN argc, jsval *arglist);
static JSBool js_socket_enumerate(JSContext *cx, JSObject *obj);
static BOOL js_socket_peek_byte(JSContext *cx, js_socket_private_t *p);
static JSBool js_socket_get(JSContext *cx, JSObject *obj, jsid id, jsval *vp);
static ptrdiff_t js_socket_recv(JSContext *cx, js_socket_private_t *p, void *buf, size_t len, int flags, int timeout);
static JSBool js_socket_resolve(JSContext *cx, JSObject *obj, jsid id);
static int js_socket_sendfilesocket(js_socket_private_t *p, int file, off_t *offset, off_t count);
static ptrdiff_t js_socket_sendsocket(js_socket_private_t *p, const void *msg, size_t len, int flush);
static JSBool js_socket_set(JSContext *cx, JSObject *obj, jsid id, JSBool strict, jsval *vp);
static JSBool js_install_event(JSContext *cx, uintN argc, jsval *arglist, BOOL once);
static JSBool js_on(JSContext *cx, uintN argc, jsval *arglist);
static JSBool js_once(JSContext *cx, uintN argc, jsval *arglist);

static int do_cryptAttribute(const CRYPT_CONTEXT session, CRYPT_ATTRIBUTE_TYPE attr, int val)
{
	int ret;
	int level;
	char *estr;
	char action[32];

	/* Force "sane" values (requirements) */
	switch(attr) {
		case CRYPT_OPTION_NET_READTIMEOUT:
			if (val < 0)
				val = 0;
			if (val > 300)
				val = 300;
			break;
		default:
			break;
	}

	ret=cryptSetAttribute(session, attr, val);
	if(ret != CRYPT_OK) {
		sprintf(action, "setting attribute %d", attr);
		get_crypt_error_string(ret, session, &estr, action, &level);
		if (estr) {
			lprintf(level, "TLS %s", estr);
			free_crypt_attrstr(estr);
		}
	}
	return ret;
}

static int do_cryptAttributeString(const CRYPT_CONTEXT session, CRYPT_ATTRIBUTE_TYPE attr, void *val, int len)
{
	int level;
	char *estr;
	char action[48];

	int ret=cryptSetAttributeString(session, attr, val, len);
	if(ret != CRYPT_OK) {
		sprintf(action, "setting attribute string %d", attr);
		get_crypt_error_string(ret, session, &estr, "setting attribute string", &level);
		if (estr) {
			lprintf(level, "TLS %s", estr);
			free_crypt_attrstr(estr);
		}
	}
	return ret;
}

#define GCES(status, pdata, estr, action) do {                                               \
	int GCES_level;                                                                      \
	get_crypt_error_string(status, pdata->session, &estr, action, &GCES_level); \
	if (estr) {                                                                          \
		lprintf(GCES_level, "%04d TLS %s", p->sock, estr);                               \
		free_crypt_attrstr(estr);                                                                  \
	}                                                                                    \
} while(0)

#define GCESH(status, socket, handle, estr, action) do {                                     \
	int GCESH_level;                                                                     \
	get_crypt_error_string(status, handle, &estr, action, &GCESH_level);        \
	if (estr) {                                                                          \
		lprintf(GCESH_level, "%04d TLS %s", socket, estr);                               \
		free_crypt_attrstr(estr);                                                                  \
	}                                                                                    \
} while(0)

static bool do_CryptFlush(js_socket_private_t *p)
{
	int ret;
	char	*estr;

	if (p->unflushed) {
		ret = cryptFlushData(p->session);

		if(ret==CRYPT_OK) {
			p->unflushed = 0;
			return true;
		}
		if (ret != CRYPT_ERROR_COMPLETE)
			GCES(ret, p, estr, "flushing data");
		return false;
	}
	return true;
}

static void
remove_js_socket_event(JSContext *cx, js_callback_t *cb, SOCKET sock)
{
	struct js_event_list *ev;
	struct js_event_list *nev;

	if (!cb->events_supported) {
		return;
	}

	for (ev = cb->events; ev; ev = nev) {
		nev = ev->next;
		if (ev->type == JS_EVENT_SOCKET_READABLE || ev->type == JS_EVENT_SOCKET_READABLE_ONCE
		    || ev->type == JS_EVENT_SOCKET_READABLE || ev->type == JS_EVENT_SOCKET_READABLE_ONCE) {
			if (ev->data.sock == sock) {
				if (ev->next)
					ev->next->prev = ev->prev;
				if (ev->prev)
					ev->prev->next = ev->next;
				else
					cb->events = ev->next;
				JS_RemoveObjectRoot(cx, &ev->cx);
				free(ev);
			}
		}
		else if(ev->type == JS_EVENT_SOCKET_CONNECT) {
			if (ev->data.connect.sock == sock) {
				if (ev->next)
					ev->next->prev = ev->prev;
				if (ev->prev)
					ev->prev->next = ev->next;
				else
					cb->events = ev->next;
				closesocket(ev->data.connect.sv[0]);
				JS_RemoveObjectRoot(cx, &ev->cx);
				free(ev);
			}
		}
	}
}

static void do_js_close(JSContext *cx, js_socket_private_t *p, bool finalize)
{
	size_t i;

	if(p->session != -1) {
		cryptDestroySession(p->session);
		p->session=-1;
	}

	// Delete any event handlers for the socket
	if (p->js_cb) {
		if (p->set) {
			for (i = 0; i < p->set->sock_count; i++) {
				if (p->set->socks[i].sock != INVALID_SOCKET)
					remove_js_socket_event(cx, p->js_cb, p->set->socks[i].sock);
			}
		}
		else {
			if (p->sock != INVALID_SOCKET)
				remove_js_socket_event(cx, p->js_cb, p->sock);
		}
	}

	if(p->sock==INVALID_SOCKET) {
		p->is_connected = FALSE;
		return;
	}
	if(p->external==FALSE) {
		close_socket(p->sock);
		p->last_error = ERROR_VALUE;
	}
	else {
		if (!finalize)
			shutdown(p->sock, SHUT_RDWR);
	}

	// This is a lie for external sockets... don't tell anyone.
	p->sock = INVALID_SOCKET;
	p->is_connected = FALSE;
}

static BOOL js_socket_peek_byte(JSContext *cx, js_socket_private_t *p)
{
	if (do_cryptAttribute(p->session, CRYPT_OPTION_NET_READTIMEOUT, 0) != CRYPT_OK)
		return FALSE;
	if (p->peeked)
		return TRUE;
	if (js_socket_recv(cx, p, &p->peeked_byte, 1, 0, 0) == 1) {
		p->peeked = TRUE;
		return TRUE;
	}
	return FALSE;
}

/* Returns > 0 upon successful data received (even if there was an error or disconnection) */
/* Returns -1 upon error (and no data received) */
/* Returns 0 upon timeout or disconnection (and no data received) */
static ptrdiff_t js_socket_recv(JSContext *cx, js_socket_private_t *p, void *buf, size_t len, int flags, int timeout)
{
	ptrdiff_t	total=0;
	int	copied,ret;
	char *estr;
	time_t now = time(NULL);
	int status;

	if (len == 0)
		return total;
	if (p->session != -1) {
		if (flags & MSG_PEEK)
			js_socket_peek_byte(cx, p);
		if (p->peeked) {
			*(uint8_t *)buf = p->peeked_byte;
			buf=((uint8_t *)buf) + 1;
			if (!(flags & MSG_PEEK))
				p->peeked = FALSE;
			total++;
			len--;
			if (len == 0)
				return total;
		}
		if (flags & MSG_PEEK)
			return total;
		if (do_cryptAttribute(p->session, CRYPT_OPTION_NET_READTIMEOUT, p->nonblocking?0:timeout) != CRYPT_OK)
			return -1;
	}
	do {
		if(p->session==-1) {
			if (p->sock == INVALID_SOCKET)
				ret = -1;
			else {
				ret = 0;
				if (socket_readable(p->sock, timeout * 1000))
					ret = recv(p->sock, buf, len, flags);
			}
		}
		else {
			status = cryptPopData(p->session, buf, len, &copied);
			if(cryptStatusOK(status))
				ret = copied;
			else {
				ret = -1;
				if (status == CRYPT_ERROR_TIMEOUT)
					ret = 0;
				else if (status != CRYPT_ERROR_COMPLETE) {
					GCES(ret, p, estr, "popping data");
					do_js_close(cx, p, false);
				}
			}
		}
		if (ret == -1) {
			if (total > 0)
				return total;
			return ret;
		}
		if ((!(flags & MSG_WAITALL)) || p->nonblocking)
			return ret;
		total += ret;
		if(total>=(ptrdiff_t)len)
			return total;
		len-=ret;
		buf=((uint8_t *)buf) + ret;

		if(!socket_check(p->sock,NULL,NULL,0)) {
			if (total > 0)
				return total;
			return -1;
		}
		if (now + timeout > time(NULL))
			return total;
	} while(len);
	return total;
}

static ptrdiff_t js_socket_sendsocket(js_socket_private_t *p, const void *msg, size_t len, int flush)
{
	ptrdiff_t total=0;
	int copied=0,ret;
	char *estr;

	if(p->session==-1)
		return sendsocket(p->sock, msg, len);
	do {
		// If we don't limit this, we occasionally get errors on large sends...
		if((ret=cryptPushData(p->session, msg, len > 0x2000 ? 0x2000 : len, &copied))==CRYPT_OK) {
			p->unflushed += copied;
			if(flush)
				do_CryptFlush(p);
			if(p->nonblocking)
				return copied;
			total += copied;
			if(total >= (ptrdiff_t)len)
				return total;
			do_CryptFlush(p);
			len -= copied;
			msg=((uint8_t *)msg) + copied;
		}
		else {
			if (ret != CRYPT_ERROR_COMPLETE)
				GCES(ret, p, estr, "pushing data");
			if(flush)
				do_CryptFlush(p);
			return total;
		}
		if(!socket_check(p->sock,NULL,NULL,0))
			break;
	} while(len);
	if(flush)
		do_CryptFlush(p);
	return total;
}

static int js_socket_sendfilesocket(js_socket_private_t *p, int file, off_t *offset, off_t count)
{
	char		buf[1024*16];
	off_t		len;
	int			rd;
	int			wr=0;
	int			total=0;
	int			i;

	if(p->session==-1)
		return sendfilesocket(p->sock, file, offset, count);

	len=filelength(file);

	if(offset!=NULL)
		if(lseek(file,*offset,SEEK_SET)<0)
			return(-1);

	if(count<1 || count>len) {
		count=len;
		count-=tell(file);		/* don't try to read beyond EOF */
	}

	if(count<0) {
		errno=EINVAL;
		return(-1);
	}

	while(total<count) {
		rd=read(file,buf,sizeof(buf));
		if(rd==-1) {
			do_CryptFlush(p);
			return(-1);
		}
		if(rd==0)
			break;
		for(i=wr=0;i<rd;i+=wr) {
			wr=js_socket_sendsocket(p,buf+i,rd-i,FALSE);
			if(wr>0)
				continue;
			if(wr==SOCKET_ERROR && ERROR_VALUE==EWOULDBLOCK) {
				wr=0;
				SLEEP(1);
				continue;
			}
			do_CryptFlush(p);
			return(wr);
		}
		if(i!=rd) {
			do_CryptFlush(p);
			return(-1);
		}
		total+=rd;
	}

	if(offset!=NULL)
		(*offset)+=total;

	do_CryptFlush(p);
	return(total);
}

static void dbprintf(BOOL error, js_socket_private_t* p, char* fmt, ...)
{
	va_list argptr;
	char sbuf[1024];

	if(p==NULL || (!p->debug /*&& !error */))
		return;

    va_start(argptr,fmt);
    vsnprintf(sbuf,sizeof(sbuf),fmt,argptr);
	sbuf[sizeof(sbuf)-1]=0;
    va_end(argptr);
	lprintf(LOG_DEBUG,"%04d Socket %s%s",p->sock,error ? "ERROR: ":"",sbuf);
}

/* Socket Destructor */

static void js_finalize_socket(JSContext *cx, JSObject *obj)
{
	js_socket_private_t* p;

	if((p=(js_socket_private_t*)JS_GetPrivate(cx,obj))==NULL)
		return;

	do_js_close(cx, p, true);

	if(!p->external)
		free(p->set);
	free(p->hostname);
	free(p);

	JS_SetPrivate(cx, obj, NULL);
}


/* Socket Object Methods */

extern JSClass js_socket_class;
static JSBool
js_close(JSContext *cx, uintN argc, jsval *arglist)
{
	JSObject *obj=JS_THIS_OBJECT(cx, arglist);
	js_socket_private_t*	p;
	jsrefcount	rc;

	JS_SET_RVAL(cx, arglist, JSVAL_VOID);

	if((p=(js_socket_private_t*)js_GetClassPrivate(cx, obj, &js_socket_class))==NULL) {
		return(JS_FALSE);
	}

	rc=JS_SUSPENDREQUEST(cx);
	do_js_close(cx, p, false);
	dbprintf(FALSE, p, "closed");
	JS_RESUMEREQUEST(cx, rc);

	return(JS_TRUE);
}

static ushort js_port(JSContext* cx, jsval val, int type)
{
	char*			cp;
	JSString*		str;
	int32			i=0;
	struct servent*	serv;
	jsrefcount		rc;

	if(JSVAL_IS_NUMBER(val)) {
		JS_ValueToInt32(cx,val,&i);
		return((ushort)i);
	}
	if(JSVAL_IS_STRING(val)) {
		str = JS_ValueToString(cx,val);
		JSSTRING_TO_ASTRING(cx, str, cp, 16, NULL);
		if(IS_DIGIT(*cp))
			return((ushort)strtol(cp,NULL,0));
		rc=JS_SUSPENDREQUEST(cx);
		serv = getservbyname(cp,type==SOCK_STREAM ? "tcp":"udp");
		JS_RESUMEREQUEST(cx, rc);
		if(serv!=NULL)
			return(htons(serv->s_port));
	}
	return(0);
}

SOCKET DLLCALL js_socket(JSContext *cx, jsval val)
{
	void*		vp;
	JSClass*	cl;
	SOCKET		sock=INVALID_SOCKET;

	if(JSVAL_IS_OBJECT(val) && (cl=JS_GetClass(cx,JSVAL_TO_OBJECT(val)))!=NULL) {
		if(cl->flags&JSCLASS_HAS_PRIVATE)
			if((vp=JS_GetInstancePrivate(cx,JSVAL_TO_OBJECT(val), &js_socket_class,NULL))!=NULL)
				sock=*(SOCKET*)vp;
	} else if(val!=JSVAL_VOID) {
		int32	i;
		if(JS_ValueToInt32(cx,val,&i))
			sock = i;
	}

	return(sock);
}

#ifdef PREFER_POLL
size_t DLLCALL js_socket_numsocks(JSContext *cx, jsval val)
{
	js_socket_private_t	*p;
	JSClass*	cl;
	SOCKET		sock=INVALID_SOCKET;
	size_t		i;
	int32_t		intval;
	size_t ret = 0;

	if(JSVAL_IS_OBJECT(val) && (cl=JS_GetClass(cx,JSVAL_TO_OBJECT(val)))!=NULL) {
		if(cl->flags&JSCLASS_HAS_PRIVATE) {
			if((p=(js_socket_private_t *)JS_GetInstancePrivate(cx,JSVAL_TO_OBJECT(val),&js_socket_class,NULL))!=NULL) {
				if(p->set) {
					for(i=0; i<p->set->sock_count; i++) {
						if(p->set->socks[i].sock == INVALID_SOCKET)
							continue;
						ret++;
					}
				}
				else {
					sock = p->sock;
					if(sock != INVALID_SOCKET)
						ret = 1;
				}
			}
		}
	} else if(val!=JSVAL_VOID) {
		if(JS_ValueToInt32(cx,val,&intval)) {
			if (intval != INVALID_SOCKET)
				ret = 1;
		}
	}
	return ret;
}

size_t DLLCALL js_socket_add(JSContext *cx, jsval val, struct pollfd *fds, short events)
{
	js_socket_private_t	*p;
	JSClass*	cl;
	SOCKET		sock=INVALID_SOCKET;
	size_t		i;
	int32_t		intval;
	size_t ret = 0;

	if(JSVAL_IS_OBJECT(val) && (cl=JS_GetClass(cx,JSVAL_TO_OBJECT(val)))!=NULL) {
		if(cl->flags&JSCLASS_HAS_PRIVATE) {
			if((p=(js_socket_private_t *)JS_GetInstancePrivate(cx,JSVAL_TO_OBJECT(val),&js_socket_class,NULL))!=NULL) {
				if(p->set) {
					for(i=0; i<p->set->sock_count; i++) {
						if(p->set->socks[i].sock == INVALID_SOCKET)
							continue;
						fds[ret].events = events;
						fds[ret++].fd = p->set->socks[i].sock;
					}
				}
				else {
					sock = p->sock;
					if(sock != INVALID_SOCKET) {
						fds[ret].events = events;
						fds[ret++].fd = sock;
					}
				}
			}
		}
	} else if(val!=JSVAL_VOID) {
		if(JS_ValueToInt32(cx,val,&intval)) {
			sock = intval;
			if(sock != INVALID_SOCKET) {
				fds[ret].events = events;
				fds[ret++].fd = sock;
			}
		}
	}
	return ret;
}
#else
SOCKET DLLCALL js_socket_add(JSContext *cx, jsval val, fd_set *fds)
{
	js_socket_private_t	*p;
	JSClass*	cl;
	SOCKET		sock=INVALID_SOCKET;
	size_t		i;
	int32_t		intval;

	if(JSVAL_IS_OBJECT(val) && (cl=JS_GetClass(cx,JSVAL_TO_OBJECT(val)))!=NULL) {
		if(cl->flags&JSCLASS_HAS_PRIVATE) {
			if((p=(js_socket_private_t *)JS_GetInstancePrivate(cx,JSVAL_TO_OBJECT(val),&js_socket_class,NULL))!=NULL) {
				if(p->set) {
					for(i=0; i<p->set->sock_count; i++) {
						if(p->set->socks[i].sock == INVALID_SOCKET)
							continue;
						FD_SET(p->set->socks[i].sock, fds);
						if(p->set->socks[i].sock > sock)
							sock = p->set->socks[i].sock;
					}
				}
				else {
					sock = p->sock;
					if(sock != INVALID_SOCKET)
						FD_SET(p->sock, fds);
				}
			}
		}
	} else if(val!=JSVAL_VOID) {
		if(JS_ValueToInt32(cx,val,&intval)) {
			sock = intval;
			FD_SET(sock, fds);
		}
	}
	return sock;
}

BOOL DLLCALL  js_socket_isset(JSContext *cx, jsval val, fd_set *fds)
{
	js_socket_private_t	*p;
	JSClass*	cl;
	size_t		i;
	int			intval;

	if(JSVAL_IS_OBJECT(val) && (cl=JS_GetClass(cx,JSVAL_TO_OBJECT(val)))!=NULL) {
		if(cl->flags&JSCLASS_HAS_PRIVATE) {
			if((p=(js_socket_private_t *)JS_GetInstancePrivate(cx,JSVAL_TO_OBJECT(val),&js_socket_class,NULL))!=NULL) {
				if(p->set) {
					for(i=0; i<p->set->sock_count; i++) {
						if(p->set->socks[i].sock == INVALID_SOCKET)
							continue;
						if(FD_ISSET(p->set->socks[i].sock, fds))
							return TRUE;
					}
				}
				else {
					if (p->sock == INVALID_SOCKET)
						return TRUE;
					else {
						if(FD_ISSET(p->sock, fds))
							return TRUE;
					}
				}
			}
		}
	} else if(val!=JSVAL_VOID) {
		if(JS_ValueToInt32(cx,val,&intval)) {
			if(FD_ISSET(intval, fds))
				return TRUE;
		}
	}
	return FALSE;
}

void DLLCALL js_timeval(JSContext* cx, jsval val, struct timeval* tv)
{
	jsdouble jsd;

	if(JSVAL_IS_INT(val))
		tv->tv_sec = JSVAL_TO_INT(val);
	else if(JSVAL_IS_DOUBLE(val)) {
		if(JS_ValueToNumber(cx,val,&jsd)) {
			tv->tv_sec = (int)jsd;
			tv->tv_usec = (int)(jsd*1000000.0)%1000000;
		}
	}
}
#endif

int DLLCALL js_polltimeout(JSContext* cx, jsval val)
{
	jsdouble jsd;

	if(JSVAL_IS_INT(val))
		return JSVAL_TO_INT(val) * 1000;

	if(JSVAL_IS_DOUBLE(val)) {
		if(JS_ValueToNumber(cx,val,&jsd))
			return jsd * 1000;
	}

	return 0;
}

static JSBool
js_bind(JSContext *cx, uintN argc, jsval *arglist)
{
	JSObject *obj=JS_THIS_OBJECT(cx, arglist);
	jsval *argv=JS_ARGV(cx, arglist);
	js_socket_private_t*	p;
	ushort		port=0;
	union xp_sockaddr	addr;
	jsrefcount	rc;
	char		*cstr=NULL;
	char		portstr[6];
	struct addrinfo	hints, *res, *tres;
	int			ret;

	JS_SET_RVAL(cx, arglist, JSVAL_FALSE);

	if((p=(js_socket_private_t*)js_GetClassPrivate(cx, obj, &js_socket_class))==NULL) {
		return(JS_FALSE);
	}

	memset(&addr,0,sizeof(addr));
	memset(&hints, 0, sizeof(hints));

	if(argc)
		port = js_port(cx,argv[0],p->type);
	if(argc > 1 && argv[1] != JSVAL_VOID) {
		JSVALUE_TO_ASTRING(cx, argv[1], cstr, INET6_ADDRSTRLEN, NULL);
	}

	hints.ai_flags = AI_ADDRCONFIG|AI_NUMERICHOST|AI_NUMERICSERV|AI_PASSIVE;
	hints.ai_socktype = p->type;

	/* We need servname to be non-NULL so we can use a NULL hostname */
	sprintf(portstr, "%hu", port);

	rc=JS_SUSPENDREQUEST(cx);
	if((ret=getaddrinfo(cstr, portstr, &hints, &res)) != 0) {
		JS_RESUMEREQUEST(cx,rc);
		dbprintf(TRUE, p, "getaddrinfo(%s, %s) failed with error %d", cstr, portstr, ret);
		p->last_error=ERROR_VALUE;
		return(JS_TRUE);
	}
	for(tres=res; tres; tres=tres->ai_next) {
		if(bind(p->sock, tres->ai_addr, tres->ai_addrlen)!=0) {
			if (tres->ai_next == NULL) {
				p->last_error=ERROR_VALUE;
				dbprintf(TRUE, p, "bind failed with error %d",ERROR_VALUE);
				freeaddrinfo(res);
				JS_RESUMEREQUEST(cx, rc);
				return(JS_TRUE);
			}
		}
		else
			break;
	}
	freeaddrinfo(res);

	dbprintf(FALSE, p, "bound to port %u",port);
	JS_SET_RVAL(cx, arglist, JSVAL_TRUE);
	JS_RESUMEREQUEST(cx, rc);
	return(JS_TRUE);
}

static JSBool
js_listen(JSContext *cx, uintN argc, jsval *arglist)
{
	JSObject *obj=JS_THIS_OBJECT(cx, arglist);
	jsval *argv=JS_ARGV(cx, arglist);
	js_socket_private_t*	p;
	int32		backlog=1;
	jsrefcount	rc;

	JS_SET_RVAL(cx, arglist, JSVAL_VOID);

	if((p=(js_socket_private_t*)js_GetClassPrivate(cx, obj, &js_socket_class))==NULL) {
		return(JS_FALSE);
	}

	if(argc && argv[0]!=JSVAL_VOID)
		backlog = JS_ValueToInt32(cx,argv[0],&backlog);

	rc=JS_SUSPENDREQUEST(cx);
	if(listen(p->sock, backlog)!=0) {
		p->last_error=ERROR_VALUE;
		dbprintf(TRUE, p, "listen failed with error %d",ERROR_VALUE);
		JS_SET_RVAL(cx, arglist, JSVAL_FALSE);
		JS_RESUMEREQUEST(cx, rc);
		return(JS_TRUE);
	}

	dbprintf(FALSE, p, "listening, backlog=%d",backlog);
	JS_SET_RVAL(cx, arglist, JSVAL_TRUE);
	JS_RESUMEREQUEST(cx, rc);
	return(JS_TRUE);
}

static JSBool
js_accept(JSContext *cx, uintN argc, jsval *arglist)
{
	JSObject *obj=JS_THIS_OBJECT(cx, arglist);
	js_socket_private_t*	p;
	js_socket_private_t*	new_p;
	JSObject*	sockobj;
	SOCKET		new_socket;
	socklen_t	addrlen;
	jsrefcount	rc;

	JS_SET_RVAL(cx, arglist, JSVAL_VOID);

	if((p=(js_socket_private_t*)js_GetClassPrivate(cx, obj, &js_socket_class))==NULL) {
		return(JS_FALSE);
	}

	addrlen=sizeof(p->remote_addr);

	rc=JS_SUSPENDREQUEST(cx);
	if(p->set) {
		if((new_socket=xpms_accept(p->set,&(p->remote_addr),&addrlen,XPMS_FOREVER,XPMS_FLAGS_NONE,NULL))==INVALID_SOCKET) {
			p->last_error=ERROR_VALUE;
			dbprintf(TRUE, p, "accept failed with error %d",ERROR_VALUE);
			JS_RESUMEREQUEST(cx, rc);
			return(JS_TRUE);
		}
		call_socket_open_callback(TRUE);
	}
	else {
		if((new_socket=accept_socket(p->sock,&(p->remote_addr),&addrlen))==INVALID_SOCKET) {
			p->last_error=ERROR_VALUE;
			dbprintf(TRUE, p, "accept failed with error %d",ERROR_VALUE);
			JS_RESUMEREQUEST(cx, rc);
			return(JS_TRUE);
		}
	}

	if((sockobj=js_CreateSocketObject(cx, obj, "new_socket", new_socket, -1))==NULL) {
		closesocket(new_socket);
		JS_RESUMEREQUEST(cx, rc);
		JS_ReportError(cx,"Error creating new socket object");
		return(JS_TRUE);
	}
	if((new_p=(js_socket_private_t*)JS_GetPrivate(cx,sockobj))==NULL) {
		JS_RESUMEREQUEST(cx, rc);
		return(JS_FALSE);
	}

	new_p->type=p->type;
	new_p->debug=p->debug;
	new_p->nonblocking=p->nonblocking;
	new_p->external=FALSE;		/* let destructor close socket */
	new_p->is_connected=TRUE;

	dbprintf(FALSE, p, "accepted connection");
	JS_SET_RVAL(cx, arglist, OBJECT_TO_JSVAL(sockobj));
	JS_RESUMEREQUEST(cx, rc);
	return(JS_TRUE);
}

struct js_connect_event_args {
	SOCKET sv[2];
	SOCKET sock;
	int socktype;
	char *host;
	BOOL nonblocking;
	ushort port;
};

static void
js_connect_event_thread(void *args)
{
	struct js_connect_event_args *a = args;
	struct addrinfo	hints,*res,*cur;
	int result;
	ulong val;
	char sresult;

	SetThreadName("sbbs/jsConnect");
	memset(&hints, 0, sizeof(hints));
	hints.ai_socktype = a->socktype;
	hints.ai_flags = AI_ADDRCONFIG;
	result = getaddrinfo(a->host, NULL, &hints, &res);
	if(result != 0)
		goto done;
	/* always set to blocking here */
	val = 0;
	ioctlsocket(a->sock, FIONBIO, &val);
	result = SOCKET_ERROR;
	for(cur=res; cur != NULL; cur=cur->ai_next) {
		inet_setaddrport((void *)cur->ai_addr, a->port);

		result = connect(a->sock, cur->ai_addr, cur->ai_addrlen);
		if(result == 0)
			break;
	}
	sresult = result;
	/* Restore original setting here */
	ioctlsocket(a->sock,FIONBIO,(ulong*)&(a->nonblocking));
	send(a->sv[1], &sresult, 1, 0);

done:
	closesocket(a->sv[1]);
	free(a);
}

static JSBool
js_connect_event(JSContext *cx, uintN argc, jsval *arglist, js_socket_private_t *p, ushort port, JSObject *obj)
{
	SOCKET sv[2];
	struct js_event_list *ev;
	JSFunction *ecb;
	js_callback_t *cb = js_get_callback(cx);
	struct js_connect_event_args *args;
	jsval *argv=JS_ARGV(cx, arglist);

	if (p->sock == INVALID_SOCKET) {
		JS_ReportError(cx, "invalid socket");
		return JS_FALSE;
	}

	if (cb == NULL) {
		return JS_FALSE;
	}

	if (!cb->events_supported) {
		JS_ReportError(cx, "events not supported");
		return JS_FALSE;
	}

	ecb = JS_ValueToFunction(cx, argv[2]);
	if (ecb == NULL) {
		return JS_FALSE;
	}

	// Create socket pair...
#ifdef _WIN32
	if (socketpair(AF_INET, SOCK_STREAM, 0, sv) == -1) {
#else
	if (socketpair(PF_UNIX, SOCK_STREAM, 0, sv) == -1) {
#endif
		JS_ReportError(cx, "Error %d creating socket pair", ERROR_VALUE);
		return JS_FALSE;
	}

	// Create event
	ev = malloc(sizeof(*ev));
	if (ev == NULL) {
		JS_ReportError(cx, "error allocating %lu bytes", sizeof(*ev));
		closesocket(sv[0]);
		closesocket(sv[1]);
		return JS_FALSE;
	}
	ev->prev = NULL;
	ev->next = cb->events;
	if (ev->next)
		ev->next->prev = ev;
	ev->type = JS_EVENT_SOCKET_CONNECT;
	ev->cx = obj;
	JS_AddObjectRoot(cx, &ev->cx);
	ev->cb = ecb;
	ev->data.connect.sv[0] = sv[0];
	ev->data.connect.sv[1] = sv[1];
	ev->data.sock = p->sock;
	ev->id = cb->next_eid++;
	p->js_cb = cb;
	cb->events = ev;

	// Start thread
	args = malloc(sizeof(*args));
	if (args == NULL) {
		JS_ReportError(cx, "error allocating %lu bytes", sizeof(*args));
		closesocket(sv[0]);
		closesocket(sv[1]);
		return JS_FALSE;
	}
	args->sv[0] = sv[0];
	args->sv[1] = sv[1];
	args->sock = p->sock;
	args->socktype = p->type;
	args->host = strdup(p->hostname);
	args->port = port;
	args->nonblocking = p->nonblocking;
	if (args->host == NULL) {
		JS_ReportError(cx, "error duplicating hostname");
		closesocket(sv[0]);