atcodes.cpp

/* Synchronet "@code" functions */
// vi: tabstop=4

/* $Id$ */

/****************************************************************************
 * @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										*
 *																			*
 * 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 "cmdshell.h"
#include "utf8.h"
#include "unicode.h"
#include "cp437defs.h"

#if defined(_WINSOCKAPI_)
	extern WSADATA WSAData;
	#define SOCKLIB_DESC WSAData.szDescription
#else
	#define	SOCKLIB_DESC NULL
#endif

/****************************************************************************/
/* Returns 0 if invalid @ code. Returns length of @ code if valid.          */
/****************************************************************************/
int sbbs_t::show_atcode(const char *instr)
{
	char	str[128],str2[128],*tp,*sp,*p;
    int     len;
	int		disp_len;
	bool	padded_left=false;
	bool	padded_right=false;
	bool	centered=false;
	bool	zero_padded=false;
	bool	truncated = true;
	bool	doubled = false;
	const char *cp;

	SAFECOPY(str,instr);
	tp=strchr(str+1,'@');
	if(!tp)                 /* no terminating @ */
		return(0);
	sp=strchr(str+1,' ');
	if(sp && sp<tp)         /* space before terminating @ */
		return(0);
	len=(tp-str)+1;
	(*tp)=0;
	sp=(str+1);

	disp_len=len;
	if(strchr(sp, ':') != NULL)
		p = NULL;
	else if((p=strstr(sp,"-L"))!=NULL)
		padded_left=true;
	else if((p=strstr(sp,"-R"))!=NULL)
		padded_right=true;
	else if((p=strstr(sp,"-C"))!=NULL)
		centered=true;
	else if((p=strstr(sp,"-W"))!=NULL)	/* wide */
		doubled=true;
	else if((p=strstr(sp,"-Z"))!=NULL)
		zero_padded=true;
	else if((p=strstr(sp,"->"))!=NULL)	/* wrap */
		truncated = false;
	if(p!=NULL) {
		char* lp = p + 2;
		if(*lp && isdigit(*lp))
			disp_len=atoi(lp);
		*p=0;
	}

	cp=atcode(sp,str2,sizeof(str2));
	if(cp==NULL)
		return(0);

	if(p==NULL || truncated == false)
		disp_len = strlen(cp);

	if(truncated) {
		if(column + disp_len > cols - 1) {
			if(column >= cols - 1)
				disp_len = 0;
			else
				disp_len = (cols - 1) - column;
		}
	}
	if(padded_left)
		bprintf("%-*.*s",disp_len,disp_len,cp);
	else if(padded_right)
		bprintf("%*.*s",disp_len,disp_len,cp);
	else if(centered) {
		int vlen = strlen(cp);
		if(vlen < disp_len) {
			int left = (disp_len - vlen) / 2;
			bprintf("%*s%-*s", left, "", disp_len - left, cp);
		} else
			bprintf("%.*s", disp_len, cp);
	} else if(doubled) {
		wide(cp);
	} else if(zero_padded) {
		int vlen = strlen(cp);
		if(vlen < disp_len)
			bprintf("%-.*s%s", (int)(disp_len - strlen(cp)), "0000000000", cp);
		else
			bprintf("%.*s", disp_len, cp);
	} else
		bprintf("%.*s", disp_len, cp);

	return(len);
}

const char* sbbs_t::atcode(char* sp, char* str, size_t maxlen)
{
	char*	tp = NULL;
	uint	i;
	uint	ugrp;
	uint	usub;
	long	l;
    stats_t stats;
    node_t  node;
	struct	tm tm;

	str[0]=0;

	if(strncmp(sp, "U+", 2) == 0) {	// UNICODE
		enum unicode_codepoint codepoint = (enum unicode_codepoint)strtoul(sp + 2, &tp, 16);
		if(tp == NULL || *tp == 0)
			outchar(codepoint, unicode_to_cp437(codepoint));
		else if(*tp == ':')
			outchar(codepoint, tp + 1);
		else {
			char fallback = (char)strtoul(tp + 1, NULL, 16);
			if(*tp == ',')
				outchar(codepoint, fallback);
			else if(*tp == '!') {
				char ch = unicode_to_cp437(codepoint);
				if(ch != 0)
					fallback = ch;
				outchar(codepoint, fallback);
			}
			else return NULL; // Invalid @-code
		}
		return nulstr;
	}

	if(strcmp(sp, "CHECKMARK") == 0) {
		outchar(UNICODE_CHECK_MARK, CP437_CHECK_MARK);
		return nulstr;
	}

	if(strcmp(sp, "ELLIPSIS") == 0) {
		outchar(UNICODE_HORIZONTAL_ELLIPSIS, "...");
		return nulstr;
	}
	if(strcmp(sp, "COPY") == 0) {
		outchar(UNICODE_COPYRIGHT_SIGN, "(C)");
		return nulstr;
	}
	if(strcmp(sp, "SOUNDCOPY") == 0) {
		outchar(UNICODE_SOUND_RECORDING_COPYRIGHT, "(P)");
		return nulstr;
	}
	if(strcmp(sp, "REGISTERED") == 0) {
		outchar(UNICODE_REGISTERED_SIGN, "(R)");
		return nulstr;
	}
	if(strcmp(sp, "TRADEMARK") == 0) {
		outchar(UNICODE_TRADE_MARK_SIGN, "(TM)");
		return nulstr;
	}
	if(strcmp(sp, "DEGREE_C") == 0) {
		outchar(UNICODE_DEGREE_CELSIUS, "\xF8""C");
		return nulstr;
	}
	if(strcmp(sp, "DEGREE_F") == 0) {
		outchar(UNICODE_DEGREE_FAHRENHEIT, "\xF8""F");
		return nulstr;
	}

	if(strncmp(sp, "WIDE:", 5) == 0) {
		wide(sp + 5);
		return(nulstr);
	}

	if(!strcmp(sp,"VER"))
		return(VERSION);

	if(!strcmp(sp,"REV")) {
		safe_snprintf(str,maxlen,"%c",REVISION);
		return(str);
	}

	if(!strcmp(sp,"FULL_VER")) {
		safe_snprintf(str,maxlen,"%s%c%s",VERSION,REVISION,beta_version);
		truncsp(str);
#if defined(_DEBUG)
		strcat(str," Debug");
#endif
		return(str);
	}

	if(!strcmp(sp,"VER_NOTICE"))
		return(VERSION_NOTICE);

	if(!strcmp(sp,"OS_VER"))
		return(os_version(str));

#ifdef JAVASCRIPT
	if(!strcmp(sp,"JS_VER"))
		return((char *)JS_GetImplementationVersion());
#endif

	if(!strcmp(sp,"PLATFORM"))
		return(PLATFORM_DESC);

	if(!strcmp(sp,"COPYRIGHT"))
		return(COPYRIGHT_NOTICE);

	if(!strcmp(sp,"COMPILER")) {
		char compiler[32];
		DESCRIBE_COMPILER(compiler);
		strncpy(str, compiler, maxlen);
		return(str);
	}

	if(!strcmp(sp,"UPTIME")) {
		extern volatile time_t uptime;
		time_t up=0;
		now = time(NULL);
		if (uptime != 0 && now >= uptime)
			up = now-uptime;
		char   days[64]="";
		if((up/(24*60*60))>=2) {
	        sprintf(days,"%lu days ",(ulong)(up/(24L*60L*60L)));
			up%=(24*60*60);
		}
		safe_snprintf(str,maxlen,"%s%lu:%02lu"
	        ,days
			,(ulong)(up/(60L*60L))
			,(ulong)((up/60L)%60L)
			);
		return(str);
	}

	if(!strcmp(sp,"SERVED")) {
		extern volatile ulong served;
		safe_snprintf(str,maxlen,"%lu",served);
		return(str);
	}

	if(!strcmp(sp,"SOCKET_LIB"))
		return(socklib_version(str,SOCKLIB_DESC));

	if(!strcmp(sp,"MSG_LIB")) {
		safe_snprintf(str,maxlen,"SMBLIB %s",smb_lib_ver());
		return(str);
	}

	if(!strcmp(sp,"BBS") || !strcmp(sp,"BOARDNAME"))
		return(cfg.sys_name);

	if(!strcmp(sp,"BAUD") || !strcmp(sp,"BPS")) {
		safe_snprintf(str,maxlen,"%lu",cur_rate);
		return(str);
	}

	if(!strcmp(sp,"COLS")) {
		safe_snprintf(str,maxlen,"%lu",cols);
		return(str);
	}
	if(!strcmp(sp,"ROWS")) {
		safe_snprintf(str,maxlen,"%lu",rows);
		return(str);
	}
	if(strcmp(sp,"TERM") == 0)
		return term_type();

	if(strcmp(sp,"CHARSET") == 0)
		return term_charset();

	if(!strcmp(sp,"CONN"))
		return(connection);

	if(!strcmp(sp,"SYSOP"))
		return(cfg.sys_op);

	if(!strcmp(sp,"LOCATION"))
		return(cfg.sys_location);

	if(!strcmp(sp,"NODE")) {
		safe_snprintf(str,maxlen,"%u",cfg.node_num);
		return(str);
	}

	if(!strcmp(sp,"TNODE")) {
		safe_snprintf(str,maxlen,"%u",cfg.sys_nodes);
		return(str);
	}

	if(strcmp(sp, "PAGER") == 0)
		return (thisnode.misc&NODE_POFF) ? text[Off] : text[On];

	if(strcmp(sp, "ALERTS") == 0)
		return (thisnode.misc&NODE_AOFF) ? text[Off] : text[On];

	if(strcmp(sp, "SPLITP") == 0)
		return (useron.chat&CHAT_SPLITP) ? text[On] : text[Off];

	if(!strcmp(sp,"INETADDR"))
		return(cfg.sys_inetaddr);

	if(!strcmp(sp,"HOSTNAME"))
		return(startup->host_name);

	if(!strcmp(sp,"FIDOADDR")) {
		if(cfg.total_faddrs)
			return(smb_faddrtoa(&cfg.faddr[0],str));
		return(nulstr);
	}

	if(!strcmp(sp,"EMAILADDR"))
		return(usermailaddr(&cfg, str
			,cfg.inetmail_misc&NMAIL_ALIAS ? useron.alias : useron.name));

	if(!strcmp(sp,"QWKID"))
		return(cfg.sys_id);

	if(!strcmp(sp,"TIME") || !strcmp(sp,"SYSTIME")) {
		now=time(NULL);
		memset(&tm,0,sizeof(tm));
		localtime_r(&now,&tm);
		if(cfg.sys_misc&SM_MILITARY)
			safe_snprintf(str,maxlen,"%02d:%02d:%02d"
		        	,tm.tm_hour,tm.tm_min,tm.tm_sec);
		else
			safe_snprintf(str,maxlen,"%02d:%02d %s"
				,tm.tm_hour==0 ? 12
				: tm.tm_hour>12 ? tm.tm_hour-12
				: tm.tm_hour, tm.tm_min, tm.tm_hour>11 ? "pm":"am");
		return(str);
	}

	if(!strcmp(sp,"TIMEZONE"))
		return(smb_zonestr(sys_timezone(&cfg),str));

	if(!strcmp(sp,"DATE") || !strcmp(sp,"SYSDATE")) {
		return(unixtodstr(&cfg,time32(NULL),str));
	}

	if(!strcmp(sp,"DATETIME"))
		return(timestr(time(NULL)));

	if(!strcmp(sp,"DATETIMEZONE")) {
		char zone[32];
		safe_snprintf(str, maxlen, "%s %s", timestr(time(NULL)), smb_zonestr(sys_timezone(&cfg),zone));
		return str;
	}
	
	if(strcmp(sp, "DATEFMT") == 0) {
		return cfg.sys_misc&SM_EURODATE ? "DD/MM/YY" : "MM/DD/YY";
	}

	if(!strcmp(sp,"TMSG")) {
		l=0;
		for(i=0;i<cfg.total_subs;i++)
			l+=getposts(&cfg,i); 		/* l=total posts */
		safe_snprintf(str,maxlen,"%lu",l);
		return(str);
	}

	if(!strcmp(sp,"TUSER")) {
		safe_snprintf(str,maxlen,"%u",total_users(&cfg));
		return(str);
	}

	if(!strcmp(sp,"TFILE")) {
		l=0;
		for(i=0;i<cfg.total_dirs;i++)
			l+=getfiles(&cfg,i);
		safe_snprintf(str,maxlen,"%lu",l);
		return(str);
	}

	if(!strcmp(sp,"TCALLS") || !strcmp(sp,"NUMCALLS")) {
		getstats(&cfg,0,&stats);
		safe_snprintf(str,maxlen,"%lu", (ulong)stats.logons);
		return(str);
	}

	if(!strcmp(sp,"PREVON") || !strcmp(sp,"LASTCALLERNODE")
		|| !strcmp(sp,"LASTCALLERSYSTEM"))
		return(lastuseron);

	if(!strcmp(sp,"CLS") || !strcmp(sp,"CLEAR")) {
		CLS;
		return(nulstr);
	}

	if(!strcmp(sp,"PAUSE") || !strcmp(sp,"MORE")) {
		pause();
		return(nulstr);
	}

	if(!strcmp(sp,"RESETPAUSE")) {
		lncntr=0;
		return(nulstr);
	}

	if(!strcmp(sp,"NOPAUSE") || !strcmp(sp,"POFF")) {
		sys_status^=SS_PAUSEOFF;
		return(nulstr);
	}

	if(!strcmp(sp,"PON") || !strcmp(sp,"AUTOMORE")) {
		sys_status^=SS_PAUSEON;
		return(nulstr);
	}

	if(strncmp(sp, "POS:", 4) == 0) {	// PCBoard	(nn is 1 based)
		i = atoi(sp + 4);
		if(i >= 1)	// Convert to 0-based
			i--;
		for(l = i - column; l > 0; l--)
			outchar(' ');
		return nulstr;
	}

	if(strncmp(sp, "DELAY:", 6) == 0) {	// PCBoard
		mswait(atoi(sp + 6) * 100);
		return nulstr;
	}

	if(strcmp(sp, "YESCHAR") == 0) {	// PCBoard
		safe_snprintf(str, maxlen, "%c", text[YNQP][0]);
		return str;
	}

	if(strcmp(sp, "NOCHAR") == 0) {		// PCBoard
		safe_snprintf(str, maxlen, "%c", text[YNQP][1]);
		return str;
	}

	if(strcmp(sp, "QUITCHAR") == 0) {
		safe_snprintf(str, maxlen, "%c", text[YNQP][2]);
		return str;
	}

	/* NOSTOP */

	/* STOP */

	if(!strcmp(sp,"BELL") || !strcmp(sp,"BEEP"))
		return("\a");

	if(!strcmp(sp,"EVENT")) {
		if(event_time==0)
			return("<none>");
		return(timestr(event_time));
	}

	/* LASTCALL */

	if(!strncmp(sp,"NODE",4)) {
		i=atoi(sp+4);
		if(i && i<=cfg.sys_nodes) {
			getnodedat(i,&node,0);
			printnodedat(i,&node);
		}
		return(nulstr);
	}

	if(!strcmp(sp,"WHO")) {
		whos_online(true);
		return(nulstr);
	}

	/* User Codes */

	if(!strcmp(sp,"USER") || !strcmp(sp,"ALIAS") || !strcmp(sp,"NAME"))
		return(useron.alias);

	if(!strcmp(sp,"FIRST")) {
		safe_snprintf(str,maxlen,"%s",useron.alias);
		tp=strchr(str,' ');
		if(tp) *tp=0;
		return(str);
	}

	if(!strcmp(sp,"USERNUM")) {
		safe_snprintf(str,maxlen,"%u",useron.number);
		return(str);
	}

	if(!strcmp(sp,"PHONE") || !strcmp(sp,"HOMEPHONE")
		|| !strcmp(sp,"DATAPHONE") || !strcmp(sp,"DATA"))
		return(useron.phone);

	if(!strcmp(sp,"ADDR1"))
		return(useron.address);

	if(!strcmp(sp,"FROM"))
		return(useron.location);

	if(!strcmp(sp,"CITY")) {
		safe_snprintf(str,maxlen,"%s",useron.location);
		char* p=strchr(str,',');
		if(p) {
			*p=0;
			return(str);
		}
		return(nulstr);
	}

	if(!strcmp(sp,"STATE")) {
		char* p=strchr(useron.location,',');
		if(p) {
			p++;
			if(*p==' ')
				p++;
			return(p);
		}
		return(nulstr);
	}

	if(!strcmp(sp,"CPU"))
		return(useron.comp);

	if(!strcmp(sp,"HOST"))
		return(client_name);

	if(!strcmp(sp,"BDATE"))
		return(useron.birth);

	if(!strcmp(sp,"AGE")) {
		safe_snprintf(str,maxlen,"%u",getage(&cfg,useron.birth));
		return(str);
	}

	if(!strcmp(sp,"CALLS") || !strcmp(sp,"NUMTIMESON")) {
		safe_snprintf(str,maxlen,"%u",useron.logons);
		return(str);
	}

	if(!strcmp(sp,"MEMO"))
		return(unixtodstr(&cfg,useron.pwmod,str));

	if(!strcmp(sp,"SEC") || !strcmp(sp,"SECURITY")) {
		safe_snprintf(str,maxlen,"%u",useron.level);
		return(str);
	}

	if(!strcmp(sp,"SINCE"))
		return(unixtodstr(&cfg,useron.firston,str));

	if(!strcmp(sp,"TIMEON") || !strcmp(sp,"TIMEUSED")) {
		now=time(NULL);
		safe_snprintf(str,maxlen,"%lu",(ulong)(now-logontime)/60L);
		return(str);
	}

	if(!strcmp(sp,"TUSED")) {              /* Synchronet only */
		now=time(NULL);
		return(sectostr((uint)(now-logontime),str)+1);
	}

	if(!strcmp(sp,"TLEFT")) {              /* Synchronet only */
		gettimeleft();
		return(sectostr(timeleft,str)+1);
	}

	if(!strcmp(sp,"TPERD"))                /* Synchronet only */
		return(sectostr(cfg.level_timeperday[useron.level],str)+1);

	if(!strcmp(sp,"TPERC"))                /* Synchronet only */
		return(sectostr(cfg.level_timepercall[useron.level],str)+1);

	if(!strcmp(sp,"TIMELIMIT")) {
		safe_snprintf(str,maxlen,"%u",cfg.level_timepercall[useron.level]);
		return(str);
	}

	if(!strcmp(sp,"MINLEFT") || !strcmp(sp,"LEFT") || !strcmp(sp,"TIMELEFT")) {
		gettimeleft();
		safe_snprintf(str,maxlen,"%lu",timeleft/60);
		return(str);
	}

	if(!strcmp(sp,"LASTON"))
		return(timestr(useron.laston));

	if(!strcmp(sp,"LASTDATEON"))
		return(unixtodstr(&cfg,useron.laston,str));

	if(!strcmp(sp,"LASTTIMEON")) {
		memset(&tm,0,sizeof(tm));
		localtime32(&useron.laston,&tm);
		if(cfg.sys_misc&SM_MILITARY)
			safe_snprintf(str,maxlen,"%02d:%02d:%02d"
				,tm.tm_hour, tm.tm_min, tm.tm_sec);
		else
			safe_snprintf(str,maxlen,"%02d:%02d %s"
				,tm.tm_hour==0 ? 12
				: tm.tm_hour>12 ? tm.tm_hour-12
				: tm.tm_hour, tm.tm_min, tm.tm_hour>11 ? "pm":"am");
		return(str);
	}

	if(!strcmp(sp,"MSGLEFT") || !strcmp(sp,"MSGSLEFT")) {
		safe_snprintf(str,maxlen,"%u",useron.posts);
		return(str);
	}

	if(!strcmp(sp,"MSGREAD")) {
		safe_snprintf(str,maxlen,"%lu",posts_read);
		return(str);
	}

	if(!strcmp(sp,"FREESPACE")) {
		safe_snprintf(str,maxlen,"%lu",getfreediskspace(cfg.temp_dir,0));
		return(str);
	}

	if(!strcmp(sp,"FREESPACEK")) {
		safe_snprintf(str,maxlen,"%lu",getfreediskspace(cfg.temp_dir,1024));
		return(str);
	}

	if(!strcmp(sp,"UPBYTES")) {
		safe_snprintf(str,maxlen,"%lu",useron.ulb);
		return(str);
	}

	if(!strcmp(sp,"UPK")) {
		safe_snprintf(str,maxlen,"%lu",useron.ulb/1024L);
		return(str);
	}

	if(!strcmp(sp,"UPS") || !strcmp(sp,"UPFILES")) {
		safe_snprintf(str,maxlen,"%u",useron.uls);
		return(str);
	}

	if(!strcmp(sp,"DLBYTES")) {
		safe_snprintf(str,maxlen,"%lu",useron.dlb);
		return(str);
	}

	if(!strcmp(sp,"DOWNK")) {
		safe_snprintf(str,maxlen,"%lu",useron.dlb/1024L);
		return(str);
	}

	if(!strcmp(sp,"DOWNS") || !strcmp(sp,"DLFILES")) {
		safe_snprintf(str,maxlen,"%u",useron.dls);
		return(str);
	}

	if(!strcmp(sp,"LASTNEW"))
		return(unixtodstr(&cfg,(time32_t)ns_time,str));

	if(!strcmp(sp,"NEWFILETIME"))
		return(timestr(ns_time));

	/* MAXDL */

	if(!strcmp(sp,"MAXDK") || !strcmp(sp,"DLKLIMIT") || !strcmp(sp,"KBLIMIT")) {
		safe_snprintf(str,maxlen,"%lu",cfg.level_freecdtperday[useron.level]/1024L);
		return(str);
	}

	if(!strcmp(sp,"DAYBYTES")) {    /* amt of free cdts used today */
		safe_snprintf(str,maxlen,"%lu",cfg.level_freecdtperday[useron.level]-useron.freecdt);
		return(str);
	}

	if(!strcmp(sp,"BYTELIMIT")) {
		safe_snprintf(str,maxlen,"%ld", (long)cfg.level_freecdtperday[useron.level]);
		return(str);
	}

	if(!strcmp(sp,"KBLEFT")) {
		safe_snprintf(str,maxlen,"%lu",(useron.cdt+useron.freecdt)/1024L);
		return(str);
	}

	if(!strcmp(sp,"BYTESLEFT")) {
		safe_snprintf(str,maxlen,"%lu",useron.cdt+useron.freecdt);
		return(str);
	}

	if(!strcmp(sp,"CONF")) {
		safe_snprintf(str,maxlen,"%s %s"
			,usrgrps ? cfg.grp[usrgrp[curgrp]]->sname :nulstr
			,usrgrps ? cfg.sub[usrsub[curgrp][cursub[curgrp]]]->sname : nulstr);
		return(str);
	}

	if(!strcmp(sp,"CONFNUM")) {
		safe_snprintf(str,maxlen,"%u %u",curgrp+1,cursub[curgrp]+1);
		return(str);
	}

	if(!strcmp(sp,"NUMDIR")) {
		safe_snprintf(str,maxlen,"%u %u",usrlibs ? curlib+1 : 0,usrlibs ? curdir[curlib]+1 : 0);
		return(str);
	}

	if(!strcmp(sp,"EXDATE") || !strcmp(sp,"EXPDATE"))
		return(unixtodstr(&cfg,useron.expire,str));

	if(!strcmp(sp,"EXPDAYS")) {
		now=time(NULL);
		l=(long)(useron.expire-now);
		if(l<0)
			l=0;
		safe_snprintf(str,maxlen,"%lu",l/(1440L*60L));
		return(str);
	}

	if(!strcmp(sp,"MEMO1"))
		return(useron.note);

	if(!strcmp(sp,"MEMO2") || !strcmp(sp,"COMPANY"))
		return(useron.name);

	if(!strcmp(sp,"ZIP"))
		return(useron.zipcode);

	if(!strcmp(sp,"HANGUP")) {
		hangup();
		return(nulstr);
	}

	/* Synchronet Specific */

	if(!strncmp(sp,"SETSTR:",7)) {
		strcpy(main_csi.str,sp+7);
		return(nulstr);
	}

	if(!strncmp(sp,"EXEC:",5)) {
		exec_bin(sp+5,&main_csi);
		return(nulstr);
	}

	if(!strncmp(sp,"EXEC_XTRN:",10)) {
		for(i=0;i<cfg.total_xtrns;i++)
			if(!stricmp(cfg.xtrn[i]->code,sp+10))
				break;
		if(i<cfg.total_xtrns)
			exec_xtrn(i);
		return(nulstr);
	}

	if(!strncmp(sp,"MENU:",5)) {
		menu(sp+5);
		return(nulstr);
	}

	if(!strncmp(sp,"CONDMENU:",9)) {
		menu(sp+9, P_NOERROR);
		return(nulstr);
	}

	if(!strncmp(sp,"TYPE:",5)) {
		printfile(cmdstr(sp+5,nulstr,nulstr,str),0);
		return(nulstr);
	}

	if(!strncmp(sp,"INCLUDE:",8)) {
		printfile(cmdstr(sp+8,nulstr,nulstr,str),P_NOCRLF|P_SAVEATR);
		return(nulstr);
	}

	if(!strcmp(sp,"QUESTION"))
		return(question);

	if(!strcmp(sp,"HANDLE"))
		return(useron.handle);

	if(!strcmp(sp,"CID") || !strcmp(sp,"IP"))
		return(cid);

	if(!strcmp(sp,"LOCAL-IP"))
		return(local_addr);

	if(!strcmp(sp,"CRLF"))
		return("\r\n");

	if(!strcmp(sp,"PUSHXY")) {
		ansi_save();
		return(nulstr);
	}

	if(!strcmp(sp,"POPXY")) {
		ansi_restore();
		return(nulstr);
	}

	if(!strcmp(sp,"HOME")) {
		cursor_home();
		return(nulstr);
	}

	if(!strcmp(sp,"CLRLINE")) {
		clearline();
		return(nulstr);
	}

	if(!strcmp(sp,"CLR2EOL"