main.cpp

/* main.cpp */

/* Synchronet terminal server thread and related functions */

/* $Id$ */

/****************************************************************************
 * @format.tab-size 4		(Plain Text/Source Code File Header)			*
 * @format.use-tabs true	(see http://www.synchro.net/ptsc_hdr.html)		*
 *																			*
 * Copyright 2011 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										*
 *																			*
 * Anonymous FTP access to the most recent released source is available at	*
 * ftp://vert.synchro.net, ftp://cvs.synchro.net and ftp://ftp.synchro.net	*
 *																			*
 * Anonymous CVS access to the development source and modification history	*
 * is available at cvs.synchro.net:/cvsroot/sbbs, example:					*
 * cvs -d :pserver:anonymous@cvs.synchro.net:/cvsroot/sbbs login			*
 *     (just hit return, no password is necessary)							*
 * cvs -d :pserver:anonymous@cvs.synchro.net:/cvsroot/sbbs checkout src		*
 *																			*
 * For Synchronet coding style and modification guidelines, see				*
 * http://www.synchro.net/source.html										*
 *																			*
 * You are encouraged to submit any modifications (preferably in Unix diff	*
 * format) via e-mail to mods@synchro.net									*
 *																			*
 * Note: If this box doesn't appear square, then you need to fix your tabs.	*
 ****************************************************************************/

#include "sbbs.h"
#include "ident.h"
#include "telnet.h" 
#include "netwrap.h"
#include "js_rtpool.h"
#include "js_request.h"

#ifdef __unix__
	#include <sys/un.h>
	#ifndef SUN_LEN
		#define SUN_LEN(su) \
	        (sizeof(*(su)) - sizeof((su)->sun_path) + strlen((su)->sun_path))
	#endif
#endif

//---------------------------------------------------------------------------

#define TELNET_SERVER "Synchronet Terminal Server"
#define STATUS_WFC	"Listening"

#define TIMEOUT_THREAD_WAIT		60			// Seconds (was 15)
#define IO_THREAD_BUF_SIZE	   	20000		// Bytes

// Globals
#ifdef _WIN32
	HANDLE		exec_mutex=NULL;
	HINSTANCE	hK32=NULL;

	#if defined(_DEBUG) && defined(_MSC_VER)
			HANDLE	debug_log=INVALID_HANDLE_VALUE;
		   _CrtMemState mem_chkpoint;
	#endif // _DEBUG && _MSC_VER

#endif // _WIN32

#ifdef USE_CRYPTLIB
	#define SSH_END()	if(ssh)	cryptDestroySession(sbbs->ssh_session);
#else
	#define	SSH_END()
#endif

volatile time_t	uptime=0;
volatile ulong	served=0;

static	protected_uint32_t node_threads_running;
		
char 	lastuseron[LEN_ALIAS+1];  /* Name of user last online */
RingBuf* node_inbuf[MAX_NODES];
SOCKET	spy_socket[MAX_NODES];
#ifdef __unix__
SOCKET	uspy_socket[MAX_NODES];	  /* UNIX domain spy sockets */
#endif
SOCKET	node_socket[MAX_NODES];
static	SOCKET telnet_socket=INVALID_SOCKET;
static	SOCKET rlogin_socket=INVALID_SOCKET;
#ifdef USE_CRYPTLIB
static	SOCKET ssh_socket=INVALID_SOCKET;
#endif
static	sbbs_t*	sbbs=NULL;
static	scfg_t	scfg;
static	char *	text[TOTAL_TEXT];
static	WORD	first_node;
static	WORD	last_node;
static	bool	terminate_server=false;
static	str_list_t recycle_semfiles;
static	str_list_t shutdown_semfiles;
#ifdef _THREAD_SUID_BROKEN
int	thread_suid_broken=TRUE;			/* NPTL is no longer broken */
#endif

extern "C" {

static bbs_startup_t* startup=NULL;

static const char* status(const char* str)
{
	if(startup!=NULL && startup->status!=NULL)
	    startup->status(startup->cbdata,str);
	return str;
}

static void update_clients()
{
	if(startup!=NULL && startup->clients!=NULL)
		startup->clients(startup->cbdata,node_threads_running.value);
}

void client_on(SOCKET sock, client_t* client, BOOL update)
{
	if(startup!=NULL && startup->client_on!=NULL)
		startup->client_on(startup->cbdata,TRUE,sock,client,update);
}

static void client_off(SOCKET sock)
{
	if(startup!=NULL && startup->client_on!=NULL)
		startup->client_on(startup->cbdata,FALSE,sock,NULL,FALSE);
}

static void thread_up(BOOL setuid)
{
	if(startup!=NULL && startup->thread_up!=NULL)
		startup->thread_up(startup->cbdata,TRUE,setuid);
}

static void thread_down()
{
	if(startup!=NULL && startup->thread_up!=NULL)
		startup->thread_up(startup->cbdata,FALSE,FALSE);
}

int lputs(int level, const char* str)
{
	if(level <= LOG_ERR) {
		errorlog(&scfg,startup==NULL ? NULL:startup->host_name, str);
		if(startup!=NULL && startup->errormsg!=NULL)
			startup->errormsg(startup->cbdata,level,str);
	}

	if(startup==NULL || startup->lputs==NULL || str==NULL || level > startup->log_level)
    	return(0);

#if defined(_WIN32)
	if(IsBadCodePtr((FARPROC)startup->lputs))
		return(0);
#endif

    return(startup->lputs(startup->cbdata,level,str));
}

int lprintf(int level, const char *fmt, ...)
{
	va_list argptr;
	char sbuf[1024];

    va_start(argptr,fmt);
    vsnprintf(sbuf,sizeof(sbuf),fmt,argptr);
	sbuf[sizeof(sbuf)-1]=0;
    va_end(argptr);
    return(lputs(level,sbuf));
}

int eprintf(int level, const char *fmt, ...)
{
	va_list argptr;
	char sbuf[1024];

    va_start(argptr,fmt);
    vsnprintf(sbuf,sizeof(sbuf),fmt,argptr);
	sbuf[sizeof(sbuf)-1]=0;
    va_end(argptr);

	if(level <= LOG_ERR) {
		errorlog(&scfg,startup==NULL ? NULL:startup->host_name, sbuf);
		if(startup!=NULL && startup->errormsg!=NULL)
			startup->errormsg(startup->cbdata,level,sbuf);
	}

    if(startup==NULL || startup->event_lputs==NULL || level > startup->log_level)
        return(0);

	strip_ctrl(sbuf, sbuf);
    return(startup->event_lputs(startup->event_cbdata,level,sbuf));
}

SOCKET open_socket(int type, const char* protocol)
{
	SOCKET	sock;
	char	error[256];

	sock=socket(AF_INET, type, IPPROTO_IP);
	if(sock!=INVALID_SOCKET && startup!=NULL && startup->socket_open!=NULL) 
		startup->socket_open(startup->cbdata,TRUE);
	if(sock!=INVALID_SOCKET && set_socket_options(&scfg, sock, protocol, error, sizeof(error)))
		lprintf(LOG_ERR,"%04d !ERROR %s",sock,error);

	return(sock);
}

SOCKET accept_socket(SOCKET s, SOCKADDR* addr, socklen_t* addrlen)
{
	SOCKET	sock;

	sock=accept(s,addr,addrlen);
	if(sock!=INVALID_SOCKET && startup!=NULL && startup->socket_open!=NULL) 
		startup->socket_open(startup->cbdata,TRUE);

	return(sock);
}

int close_socket(SOCKET sock)
{
	int		result;

	if(sock==INVALID_SOCKET || sock==0)
		return(0);

	shutdown(sock,SHUT_RDWR);	/* required on Unix */
	result=closesocket(sock);
	if(startup!=NULL && startup->socket_open!=NULL)
		startup->socket_open(startup->cbdata,FALSE);
	if(result!=0 && ERROR_VALUE!=ENOTSOCK)
		lprintf(LOG_WARNING,"!ERROR %d closing socket %d",ERROR_VALUE,sock);
	return(result);
}


u_long resolve_ip(char *addr)
{
	HOSTENT*	host;
	char*		p;

	if(*addr==0)
		return((u_long)INADDR_NONE);

	for(p=addr;*p;p++)
		if(*p!='.' && !isdigit(*p))
			break;
	if(!(*p))
		return(inet_addr(addr));
	if((host=gethostbyname(addr))==NULL) 
		return((u_long)INADDR_NONE);
	return(*((ulong*)host->h_addr_list[0]));
}

} /* extern "C" */

#ifdef _WINSOCKAPI_

WSADATA WSAData;
#define SOCKLIB_DESC WSAData.szDescription
static BOOL WSAInitialized=FALSE;

static BOOL winsock_startup(void)
{
	int		status;             /* Status Code */

    if((status = WSAStartup(MAKEWORD(1,1), &WSAData))==0) {
		lprintf(LOG_DEBUG,"%s %s",WSAData.szDescription, WSAData.szSystemStatus);
		WSAInitialized=TRUE;
		return(TRUE);
	}

    lprintf(LOG_CRIT,"!WinSock startup ERROR %d", status);
	return(FALSE);
}

#else /* No WINSOCK */

#define winsock_startup()	(TRUE)
#define SOCKLIB_DESC NULL

#endif

DLLEXPORT void DLLCALL sbbs_srand()
{
	DWORD seed;

	xp_randomize();
#if defined(HAS_DEV_RANDOM) && defined(RANDOM_DEV)
	int     rf;

	if((rf=open(RANDOM_DEV, O_RDONLY))!=-1) {
		read(rf, &seed, sizeof(seed));
		close(rf);
	}
#else
	seed = time(NULL) ^ (DWORD)GetCurrentThreadId();
#endif

 	srand(seed);
	sbbs_random(10);	/* Throw away first number */
}

int DLLCALL sbbs_random(int n)
{
	return(xp_random(n));
}

#ifdef JAVASCRIPT

static js_server_props_t js_server_props;

JSBool	
DLLCALL js_CreateArrayOfStrings(JSContext* cx, JSObject* parent, const char* name, char* str[],uintN flags)
{
	JSObject*	array;
	JSString*	js_str;
	jsval		val;
	size_t		i;
	jsuint		len=0;
		
	if(JS_GetProperty(cx,parent,name,&val) && val!=JSVAL_VOID)
		array=JSVAL_TO_OBJECT(val);
	else
		if((array=JS_NewArrayObject(cx, 0, NULL))==NULL)	/* Assertion here, in _heap_alloc_dbg, June-21-2004 */
			return(JS_FALSE);								/* Caused by nntpservice.js? */

	if(!JS_DefineProperty(cx, parent, name, OBJECT_TO_JSVAL(array)
		,NULL,NULL,flags))
		return(JS_FALSE);

	if(!JS_GetArrayLength(cx, array, &len))
		return(JS_FALSE);

	for(i=0;str[i]!=NULL;i++) {
		if((js_str = JS_NewStringCopyZ(cx, str[i]))==NULL)
			break;
		val = STRING_TO_JSVAL(js_str);
		if(!JS_SetElement(cx, array, len+i, &val))
			break;
	}

	return(JS_TRUE);
}

/* Convert from Synchronet-specific jsSyncMethodSpec to JSAPI's JSFunctionSpec */

JSBool
DLLCALL js_DescribeSyncObject(JSContext* cx, JSObject* obj, const char* str, int ver)
{
	JSString* js_str = JS_NewStringCopyZ(cx, str);

	if(js_str==NULL)
		return(JS_FALSE);

	if(ver < 10000)		/* auto convert 313 to 31300 */
		ver*=100;

	return(JS_DefineProperty(cx,obj,"_description"
			,STRING_TO_JSVAL(js_str),NULL,NULL,JSPROP_READONLY)
		&& JS_DefineProperty(cx,obj,"_ver"
			,INT_TO_JSVAL(ver),NULL,NULL,JSPROP_READONLY));
}

JSBool
DLLCALL js_DescribeSyncConstructor(JSContext* cx, JSObject* obj, const char* str)
{
	JSString* js_str = JS_NewStringCopyZ(cx, str);

	if(js_str==NULL)
		return(JS_FALSE);

	return(JS_DefineProperty(cx,obj,"_constructor"
		,STRING_TO_JSVAL(js_str),NULL,NULL,JSPROP_READONLY));
}

#ifdef BUILD_JSDOCS

static const char* method_array_name = "_method_list";
static const char* propver_array_name = "_property_ver_list";

/*
 * from jsatom.c:
 * Keep this in sync with jspubtd.h -- an assertion below will insist that
 * its length match the JSType enum's JSTYPE_LIMIT limit value.
 */
static const char *js_type_str[] = {
    "void",			// changed from "undefined"
    "object",
    "function",
    "string",
    "number",
    "boolean",
	"array",
	"alias",
	"undefined",
	"null"
};

JSBool
DLLCALL js_DefineSyncProperties(JSContext *cx, JSObject *obj, jsSyncPropertySpec* props)
{
	uint		i;
	long		ver;
	jsval		val;
	jsuint		len=0;
	JSObject*	array;

	if((array=JS_NewArrayObject(cx, 0, NULL))==NULL)
		return(JS_FALSE);

	if(!JS_DefineProperty(cx, obj, propver_array_name, OBJECT_TO_JSVAL(array)
		,NULL,NULL,JSPROP_READONLY))
		return(JS_FALSE);

	for(i=0;props[i].name;i++) {
		if(!JS_DefinePropertyWithTinyId(cx, obj, /* Never reserve any "slots" for properties */
			props[i].name,props[i].tinyid, JSVAL_VOID, NULL, NULL, props[i].flags|JSPROP_SHARED))
			return(JS_FALSE);
		if(props[i].flags&JSPROP_ENUMERATE) {	/* No need to version invisible props */
			if((ver=props[i].ver) < 10000)		/* auto convert 313 to 31300 */
				ver*=100;
			val = INT_TO_JSVAL(ver);
			if(!JS_SetElement(cx, array, len++, &val))
				return(JS_FALSE);
		}
	}

	return(JS_TRUE);
}

JSBool 
DLLCALL js_DefineSyncMethods(JSContext* cx, JSObject* obj, jsSyncMethodSpec *funcs, BOOL append)
{
	int			i;
	jsuint		len=0;
	long		ver;
	jsval		val;
	JSObject*	method;
	JSObject*	method_array;
	JSString*	js_str;

	/* Return existing method_list array if it's already been created */
	if(JS_GetProperty(cx,obj,method_array_name,&val) && val!=JSVAL_VOID)
		method_array=JSVAL_TO_OBJECT(val);
	else
		if((method_array=JS_NewArrayObject(cx, 0, NULL))==NULL) 
			return(JS_FALSE);

	if(!JS_DefineProperty(cx, obj, method_array_name, OBJECT_TO_JSVAL(method_array)
		, NULL, NULL, 0))
		return(JS_FALSE);

	if(append)
		if(!JS_GetArrayLength(cx, method_array, &len))
			return(JS_FALSE);

	for(i=0;funcs[i].name;i++) {

		if(!JS_DefineFunction(cx, obj, funcs[i].name, funcs[i].call, funcs[i].nargs, 0))
			return(JS_FALSE);

		if(funcs[i].type==JSTYPE_ALIAS)
			continue;

		method = JS_NewObject(cx, NULL, NULL, method_array);	/* exception here June-7-2003 */

		if(method==NULL)
			return(JS_FALSE);

		if(funcs[i].name!=NULL) {
			if((js_str=JS_NewStringCopyZ(cx,funcs[i].name))==NULL)
				return(JS_FALSE);
			val = STRING_TO_JSVAL(js_str);
			JS_SetProperty(cx, method, "name", &val);
		}

		val = INT_TO_JSVAL(funcs[i].nargs);
		if(!JS_SetProperty(cx, method, "nargs", &val))
			return(JS_FALSE);

		if((js_str=JS_NewStringCopyZ(cx,js_type_str[funcs[i].type]))==NULL)
			return(JS_FALSE);
		val = STRING_TO_JSVAL(js_str);
		JS_SetProperty(cx, method, "type", &val);

		if(funcs[i].args!=NULL) {
			if((js_str=JS_NewStringCopyZ(cx,funcs[i].args))==NULL)
				return(JS_FALSE);
			val = STRING_TO_JSVAL(js_str);
			JS_SetProperty(cx, method, "args", &val);
		}

		if(funcs[i].desc!=NULL) { 
			if((js_str=JS_NewStringCopyZ(cx,funcs[i].desc))==NULL)
				return(JS_FALSE);
			val = STRING_TO_JSVAL(js_str);
			JS_SetProperty(cx, method, "desc", &val);
		}

		if(funcs[i].ver) {
			if((ver=funcs[i].ver) < 10000)		/* auto convert 313 to 31300 */
				ver*=100;
			val = INT_TO_JSVAL(ver);
			JS_SetProperty(cx,method, "ver", &val);
		}

		val=OBJECT_TO_JSVAL(method);
		if(!JS_SetElement(cx, method_array, len+i, &val))
			return(JS_FALSE);
	}

	return(JS_TRUE);
}

/*
 * Always resolve all here since
 * 1) We'll always be enumerating anyways
 * 2) The speed penalty won't be seen in production code anyways
 */
JSBool
DLLCALL js_SyncResolve(JSContext* cx, JSObject* obj, char *name, jsSyncPropertySpec* props, jsSyncMethodSpec* funcs, jsConstIntSpec* consts, int flags)
{
	JSBool	ret=JS_TRUE;

	if(props) {
		if(!js_DefineSyncProperties(cx, obj, props))
			ret=JS_FALSE;
	}
		
	if(funcs) {
		if(!js_DefineSyncMethods(cx, obj, funcs, 0))
			ret=JS_FALSE;
	}

	if(consts) {
		if(!js_DefineConstIntegers(cx, obj, consts, flags))
			ret=JS_FALSE;
	}

	return(ret);
}

#else // NON-JSDOCS

JSBool
DLLCALL js_DefineSyncProperties(JSContext *cx, JSObject *obj, jsSyncPropertySpec* props)
{
	uint i;

	for(i=0;props[i].name;i++) 
		if(!JS_DefinePropertyWithTinyId(cx, obj, 
			props[i].name,props[i].tinyid, JSVAL_VOID, NULL, NULL, props[i].flags|JSPROP_SHARED))
			return(JS_FALSE);

	return(JS_TRUE);
}


JSBool 
DLLCALL js_DefineSyncMethods(JSContext* cx, JSObject* obj, jsSyncMethodSpec *funcs, BOOL append)
{
	uint i;

	for(i=0;funcs[i].name;i++)
		if(!JS_DefineFunction(cx, obj, funcs[i].name, funcs[i].call, funcs[i].nargs, 0))
			return(JS_FALSE);
	return(JS_TRUE);
}

JSBool
DLLCALL js_SyncResolve(JSContext* cx, JSObject* obj, char *name, jsSyncPropertySpec* props, jsSyncMethodSpec* funcs, jsConstIntSpec* consts, int flags)
{
	uint i;
	jsval	val;

	if(props) {
		for(i=0;props[i].name;i++) {
			if(name==NULL || strcmp(name, props[i].name)==0) {
				if(!JS_DefinePropertyWithTinyId(cx, obj, 
						props[i].name,props[i].tinyid, JSVAL_VOID, NULL, NULL, props[i].flags|JSPROP_SHARED))
					return(JS_FALSE);
				if(name)
					return(JS_TRUE);
			}
		}
	}
	if(funcs) {
		for(i=0;funcs[i].name;i++) {
			if(name==NULL || strcmp(name, funcs[i].name)==0) {
				if(!JS_DefineFunction(cx, obj, funcs[i].name, funcs[i].call, funcs[i].nargs, 0))
					return(JS_FALSE);
				if(name)
					return(JS_TRUE);
			}
		}
	}
	if(consts) {
		for(i=0;consts[i].name;i++) {
			if(name==NULL || strcmp(name, consts[i].name)==0) {
				val=INT_TO_JSVAL(consts[i].val);

				if(!JS_DefineProperty(cx, obj, consts[i].name, val ,NULL, NULL, flags))
					return(JS_FALSE);

				if(name)
					return(JS_TRUE);
			}
		}
	}

	return(JS_TRUE);
}

#endif

/* This is a stream-lined version of JS_DefineConstDoubles */
JSBool
DLLCALL js_DefineConstIntegers(JSContext* cx, JSObject* obj, jsConstIntSpec* ints, int flags)
{
	uint	i;
	jsval	val;

	for(i=0;ints[i].name;i++) {
		val=INT_TO_JSVAL(ints[i].val);

		if(!JS_DefineProperty(cx, obj, ints[i].name, val ,NULL, NULL, flags))
			return(JS_FALSE);
	}

	return(JS_TRUE);
}

static JSBool
js_log(JSContext *cx, uintN argc, jsval *arglist)
{
	JSObject *obj=JS_THIS_OBJECT(cx, arglist);
	jsval *argv=JS_ARGV(cx, arglist);
    uintN		i=0;
	int32		level=LOG_INFO;
    JSString*	str=NULL;
	sbbs_t*		sbbs;
	jsrefcount	rc;
	char		*line;

	JS_SET_RVAL(cx, arglist, JSVAL_VOID);

	if((sbbs=(sbbs_t*)JS_GetContextPrivate(cx))==NULL)
		return(JS_FALSE);

	if(argc > 1 && JSVAL_IS_NUMBER(argv[i]))
		JS_ValueToInt32(cx,argv[i++],&level);

    for(; i<argc; i++) {
		if((str=JS_ValueToString(cx, argv[i]))==NULL)
			return(JS_FALSE);
		JSSTRING_TO_STRING(cx, str, line, NULL);
		if(line==NULL)
		    return(JS_FALSE);
		rc=JS_SUSPENDREQUEST(cx);
		if(sbbs->online==ON_LOCAL) {
			if(startup!=NULL && startup->event_lputs!=NULL && level <= startup->log_level) {
				startup->event_lputs(startup->event_cbdata,level,line);
			}
		} else
			lprintf(level,"Node %d %s", sbbs->cfg.node_num, line);
		JS_RESUMEREQUEST(cx, rc);
	}

	if(str==NULL)
		JS_SET_RVAL(cx, arglist, JSVAL_VOID);
	else
		JS_SET_RVAL(cx, arglist, STRING_TO_JSVAL(str));
    return(JS_TRUE);
}

static JSBool
js_read(JSContext *cx, uintN argc, jsval *arglist)
{
	JSObject *obj=JS_THIS_OBJECT(cx, arglist);
	jsval *argv=JS_ARGV(cx, arglist);
	uchar*		buf;
	int32		len=128;
	sbbs_t*		sbbs;
	jsrefcount	rc;

	JS_SET_RVAL(cx, arglist, JSVAL_VOID);

	if((sbbs=(sbbs_t*)JS_GetContextPrivate(cx))==NULL)
		return(JS_FALSE);

	if(argc)
		JS_ValueToInt32(cx,argv[0],&len);

	if((buf=(uchar*)malloc(len))==NULL)
		return(JS_TRUE);

	rc=JS_SUSPENDREQUEST(cx);
	len=RingBufRead(&sbbs->inbuf,buf,len);
	JS_RESUMEREQUEST(cx, rc);

	if(len>0)
		JS_SET_RVAL(cx, arglist, STRING_TO_JSVAL(JS_NewStringCopyN(cx,(char*)buf,len)));

	free(buf);
	return(JS_TRUE);
}

static JSBool
js_readln(JSContext *cx, uintN argc, jsval *arglist)
{
	JSObject *obj=JS_THIS_OBJECT(cx, arglist);
	jsval *argv=JS_ARGV(cx, arglist);
	char*		buf;
	int32		len=128;
	sbbs_t*		sbbs;
	jsrefcount	rc;

	JS_SET_RVAL(cx, arglist, JSVAL_VOID);

	if((sbbs=(sbbs_t*)JS_GetContextPrivate(cx))==NULL)
		return(JS_FALSE);

	if(argc)
		JS_ValueToInt32(cx,argv[0],&len);

	if((buf=(char*)malloc(len))==NULL)
		return(JS_TRUE);

	rc=JS_SUSPENDREQUEST(cx);
	len=sbbs->getstr(buf,len,K_NONE);
	JS_RESUMEREQUEST(cx, rc);

	if(len>0)
		JS_SET_RVAL(cx, arglist, STRING_TO_JSVAL(JS_NewStringCopyZ(cx,buf)));

	free(buf);
	return(JS_TRUE);
}

static JSBool
js_write(JSContext *cx, uintN argc, jsval *arglist)
{
	JSObject *obj=JS_THIS_OBJECT(cx, arglist);
	jsval *argv=JS_ARGV(cx, arglist);
    uintN		i;
    JSString*	str=NULL;
	sbbs_t*		sbbs;
	jsrefcount	rc;
	char		*cstr;

	JS_SET_RVAL(cx, arglist, JSVAL_VOID);

	if((sbbs=(sbbs_t*)JS_GetContextPrivate(cx))==NULL)
		return(JS_FALSE);

    for (i = 0; i < argc; i++) {
		JSVALUE_TO_STRING(cx, argv[i], cstr, NULL);
		if(cstr==NULL)
		    return(JS_FALSE);
		rc=JS_SUSPENDREQUEST(cx);
		if(sbbs->online==ON_LOCAL)
			eprintf(LOG_INFO,"%s",cstr);
		else
			sbbs->bputs(cstr);
		JS_RESUMEREQUEST(cx, rc);
	}

	if(str==NULL)
		JS_SET_RVAL(cx, arglist, JSVAL_VOID);
	else
		JS_SET_RVAL(cx, arglist, STRING_TO_JSVAL(str));
    return(JS_TRUE);
}

static JSBool
js_write_raw(JSContext *cx, uintN argc, jsval *arglist)
{
	JSObject *obj=JS_THIS_OBJECT(cx, arglist);
	jsval *argv=JS_ARGV(cx, arglist);
    uintN		i;
    char*	str=NULL;
	size_t		len;
	sbbs_t*		sbbs;
	jsrefcount	rc;

	JS_SET_RVAL(cx, arglist, JSVAL_VOID);

	if((sbbs=(sbbs_t*)JS_GetContextPrivate(cx))==NULL)
		return(JS_FALSE);

    for (i = 0; i < argc; i++) {
		JSVALUE_TO_STRING(cx, argv[i], str, &len);
		if(str==NULL)
		    return(JS_FALSE);
		rc=JS_SUSPENDREQUEST(cx);
		sbbs->putcom(str, len);
		JS_RESUMEREQUEST(cx, rc);
	}

    return(JS_TRUE);
}

static JSBool
js_writeln(JSContext *cx, uintN argc, jsval *arglist)
{
	JSObject *obj=JS_THIS_OBJECT(cx, arglist);
	jsval *argv=JS_ARGV(cx, arglist);
	sbbs_t*		sbbs;
	jsrefcount	rc;

	JS_SET_RVAL(cx, arglist, JSVAL_VOID);

	if((sbbs=(sbbs_t*)JS_GetContextPrivate(cx))==NULL)
		return(JS_FALSE);

	js_write(cx,argc,arglist);
	rc=JS_SUSPENDREQUEST(cx);
	if(sbbs->online==ON_REMOTE)
		sbbs->bputs(crlf);
	JS_RESUMEREQUEST(cx, rc);

    return(JS_TRUE);
}

static JSBool
js_printf(JSContext *cx, uintN argc, jsval *arglist)
{
	JSObject *obj=JS_THIS_OBJECT(cx, arglist);
	jsval *argv=JS_ARGV(cx, arglist);
	char*		p;
	sbbs_t*		sbbs;
	jsrefcount	rc;

	JS_SET_RVAL(cx, arglist, JSVAL_VOID);

	if((sbbs=(sbbs_t*)JS_GetContextPrivate(cx))==NULL)
		return(JS_FALSE);

	if((p = js_sprintf(cx, 0, argc, argv))==NULL) {
		JS_ReportError(cx,"js_sprintf failed");
		return(JS_FALSE);
	}

	rc=JS_SUSPENDREQUEST(cx);
	if(sbbs->online==ON_LOCAL)
		eprintf(LOG_INFO,"%s",p);
	else
		sbbs->bputs(p);
	JS_RESUMEREQUEST(cx, rc);

	JS_SET_RVAL(cx, arglist, STRING_TO_JSVAL(JS_NewStringCopyZ(cx, p)));

	js_sprintf_free(p);

    return(JS_TRUE);
}

static JSBool
js_alert(JSContext *cx, uintN argc, jsval *arglist)
{
	JSObject *obj=JS_THIS_OBJECT(cx, arglist);
	jsval *argv=JS_ARGV(cx, arglist);
    JSString *	str;
	sbbs_t*		sbbs;
	jsrefcount	rc;
	char		*cstr;

	JS_SET_RVAL(cx, arglist, JSVAL_VOID);

	if((sbbs=(sbbs_t*)JS_GetContextPrivate(cx))==NULL)
		return(JS_FALSE);

	JSVALUE_TO_STRING(cx, argv[0], cstr, NULL);
	if(cstr==NULL)
	    return(JS_FALSE);

	rc=JS_SUSPENDREQUEST(cx);
	sbbs->attr(sbbs->cfg.color[clr_err]);
	sbbs->bputs(cstr);
	sbbs->attr(LIGHTGRAY);
	sbbs->bputs(crlf);
	JS_RESUMEREQUEST(cx, rc);

    return(JS_TRUE);
}

static JSBool
js_confirm(JSContext *cx, uintN argc, jsval *arglist)
{
	JSObject *obj=JS_THIS_OBJECT(cx, arglist);
	jsval *argv=JS_ARGV(cx, arglist);
    JSString *	str;
	sbbs_t*		sbbs;
	jsrefcount	rc;
	char		*cstr;

	JS_SET_RVAL(cx, arglist, JSVAL_VOID);

	JSVALUE_TO_STRING(cx, argv[0], cstr, NULL);
	if(cstr==NULL)
	    return(JS_FALSE);

	rc=JS_SUSPENDREQUEST(cx);
	JS_SET_RVAL(cx, arglist, BOOLEAN_TO_JSVAL(sbbs->yesno(cstr)));
	JS_RESUMEREQUEST(cx, rc);
	return(JS_TRUE);
}

static JSBool
js_deny(JSContext *cx, uintN argc, jsval *arglist)
{
	JSObject *obj=JS_THIS_OBJECT(cx, arglist);
	jsval *argv=JS_ARGV(cx, arglist);
    JSString *	str;
	sbbs_t*		sbbs;
	jsrefcount	rc;
	char		*cstr;

	JS_SET_RVAL(cx, arglist, JSVAL_VOID);

	if((sbbs=(sbbs_t*)JS_GetContextPrivate(cx))==NULL)
		return(JS_FALSE);

	JSVALUE_TO_STRING(cx, argv[0], cstr, NULL);
	if(cstr==NULL)
	    return(JS_FALSE);

	rc=JS_SUSPENDREQUEST(cx);
	JS_SET_RVAL(cx, arglist, BOOLEAN_TO_JSVAL(sbbs->noyes(cstr)));
	JS_RESUMEREQUEST(cx, rc);
	return(JS_TRUE);
}


static JSBool
js_prompt(JSContext *cx, uintN argc, jsval *arglist)
{
	JSObject *obj=JS_THIS_OBJECT(cx, arglist);
	jsval *argv=JS_ARGV(cx, arglist);
	char		instr[81];
    JSString *	str;
	sbbs_t*		sbbs;
	jsrefcount	rc;
	char		*cstr;
    char 		*prompt;

	JS_SET_RVAL(cx, arglist, JSVAL_VOID);

	if((sbbs=(sbbs_t*)JS_GetContextPrivate(cx))==NULL)
		return(JS_FALSE);

	JSVALUE_TO_STRING(cx, argv[0], prompt, NULL);
	if(prompt==NULL)
	    return(JS_FALSE);

	if(argc>1) {
		JSVALUE_TO_STRING(cx, argv[1], cstr, NULL);
		if(cstr==NULL)
		    return(JS_FALSE);
		SAFECOPY(instr,cstr);
	} else
		instr[0]=0;

	rc=JS_SUSPENDREQUEST(cx);
	sbbs->bprintf("\1n\1y\1h%s\1w: ",prompt);

	if(!sbbs->getstr(instr,sizeof(instr)-1,K_EDIT)) {
		JS_SET_RVAL(cx, arglist, JSVAL_NULL);
		JS_RESUMEREQUEST(cx, rc);
		return(JS_TRUE);
	}
	JS_RESUMEREQUEST(cx, rc);

	if((str=JS_NewStringCopyZ(cx, instr))==NULL)
	    return(JS_FALSE);

	JS_SET_RVAL(cx, arglist, STRING_TO_JSVAL(str));
    return(JS_TRUE);
}

static jsSyncMethodSpec js_global_functions[] = {
	{"log",				js_log,				1,	JSTYPE_STRING,	JSDOCSTR("[level,] value [,value]")
	,JSDOCSTR("add a line of text to the server and/or system log, "
		"<i>values</i> are typically string constants or variables, "
		"<i>level</i> is the debug level/priority (default: <tt>LOG_INFO</tt>)")
	,311
	},
	{"read",			js_read,			0,	JSTYPE_STRING,	JSDOCSTR("[count]")
	,JSDOCSTR("read up to count characters from input stream")
	,311
	},