inkey.cpp

/* Synchronet single key input function (no wait) */

/* $Id$ */

/****************************************************************************
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 * 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			*
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 ****************************************************************************/

#include "sbbs.h"
#include "petdefs.h"

int kbincom(sbbs_t* sbbs, unsigned long timeout)
{
	int	ch;

	if(sbbs->keybuftop!=sbbs->keybufbot) { 
		ch=sbbs->keybuf[sbbs->keybufbot++]; 
		if(sbbs->keybufbot==KEY_BUFSIZE) 
			sbbs->keybufbot=0; 
	} else {
		ch=sbbs->incom(timeout);
		long term = sbbs->term_supports();
		if(term&PETSCII) {
			switch(ch) {
				case PETSCII_HOME:
					return TERM_KEY_HOME;
				case PETSCII_CLEAR:
					return TERM_KEY_END;
				case PETSCII_INSERT:
					return TERM_KEY_INSERT;
				case PETSCII_DELETE:
					return '\b';
				case PETSCII_LEFT:
					return TERM_KEY_LEFT;
				case PETSCII_RIGHT:
					return TERM_KEY_RIGHT;
				case PETSCII_UP:
					return TERM_KEY_UP;
				case PETSCII_DOWN:
					return TERM_KEY_DOWN;
			}
			if((ch&0xe0) == 0xc0)	/* "Codes $60-$7F are, actually, copies of codes $C0-$DF" */
				ch = 0x60 | (ch&0x1f);
			if(isalpha((unsigned char)ch))
				ch ^= 0x20;	/* Swap upper/lower case */
		}

		if(term&SWAP_DELETE) {
			switch(ch) {
				case TERM_KEY_DELETE:
					ch = '\b';
					break;
				case '\b':
					ch = TERM_KEY_DELETE;
					break;
			}
		}
	}

	return ch;
}

/****************************************************************************/
/* Returns character if a key has been hit remotely and responds			*/
/* Called from functions getkey, msgabort and main_sec						*/
/****************************************************************************/
char sbbs_t::inkey(long mode, unsigned long timeout)
{
	uchar	ch=0;

	ch=kbincom(this,timeout); 

	if(ch==0) {
		if(sys_status&SS_SYSPAGE) 
			sbbs_beep(sbbs_random(800),100);
		return(0);
	}

	if(cfg.node_misc&NM_7BITONLY
		&& (!(sys_status&SS_USERON) || term_supports(NO_EXASCII)))
		ch&=0x7f; 

	this->timeout=time(NULL);

	/* Is this a control key */
	if(ch<' ') {
		if(cfg.ctrlkey_passthru&(1<<ch))	/*  flagged as passthru? */
			return(ch);						/* do not handle here */
		return(handle_ctrlkey(ch,mode));
	}

	if(mode&K_UPPER)
		ch=toupper(ch);

	return(ch);
}

char sbbs_t::handle_ctrlkey(char ch, long mode)
{
	char	str[512];
	char 	tmp[512];
	uint	i,j;

	if(ch==TERM_KEY_ABORT) {  /* Ctrl-C Abort */
		sys_status|=SS_ABORT;
		if(mode&K_SPIN) /* back space once if on spinning cursor */
			backspace();
		return(0); 
	}
	if(ch==CTRL_Z && !(mode&(K_MSG|K_GETSTR))
		&& action!=NODE_PCHT) {	 /* Ctrl-Z toggle raw input mode */
		if(hotkey_inside&(1<<ch))
			return(0);
		hotkey_inside |= (1<<ch);
		if(mode&K_SPIN)
			bputs("\b ");
		SAVELINE;
		attr(LIGHTGRAY);
		CRLF;
		bputs(text[RawMsgInputModeIsNow]);
		if(console&CON_RAW_IN)
			bputs(text[OFF]);
		else
			bputs(text[ON]);
		console^=CON_RAW_IN;
		CRLF;
		CRLF;
		RESTORELINE;
		lncntr=0;
		hotkey_inside &= ~(1<<ch);
		if(action!=NODE_MAIN && action!=NODE_XFER)
			return(CTRL_Z);
		return(0); 
	}

	if(console&CON_RAW_IN)	 /* ignore ctrl-key commands if in raw mode */
		return(ch);

#if 0	/* experimental removal to fix Tracker1's pause module problem with down-arrow */
	if(ch==LF)				/* ignore LF's if not in raw mode */
		return(0);
#endif

	/* Global hot key event */
	if(sys_status&SS_USERON) {
		for(i=0;i<cfg.total_hotkeys;i++)
			if(cfg.hotkey[i]->key==ch)
				break;
		if(i<cfg.total_hotkeys) {
			if(hotkey_inside&(1<<ch))
				return(0);
			hotkey_inside |= (1<<ch);
			if(mode&K_SPIN)
				bputs("\b ");
			if(!(sys_status&SS_SPLITP)) {
				SAVELINE;
				attr(LIGHTGRAY);
				CRLF; 
			}
			if(cfg.hotkey[i]->cmd[0]=='?') {
				if(js_hotkey_cx == NULL) {
					js_hotkey_cx = js_init(&js_hotkey_runtime, &js_hotkey_glob, "HotKey");
					js_create_user_objects(js_hotkey_cx, js_hotkey_glob);
				}
				js_execfile(cmdstr(cfg.hotkey[i]->cmd+1,nulstr,nulstr,tmp), /* startup_dir: */NULL, /* scope: */js_hotkey_glob, js_hotkey_cx);
			} else
				external(cmdstr(cfg.hotkey[i]->cmd,nulstr,nulstr,tmp),0);
			if(!(sys_status&SS_SPLITP)) {
				CRLF;
				RESTORELINE; 
			}
			lncntr=0;
			hotkey_inside &= ~(1<<ch);
			return(0);
		}
	}

	switch(ch) {
		case CTRL_O:	/* Ctrl-O toggles pause temporarily */
			console^=CON_PAUSEOFF;
			return(0); 
		case CTRL_P:	/* Ctrl-P Private node-node comm */
			if(!(sys_status&SS_USERON))
				break;;
			if(hotkey_inside&(1<<ch))
				return(0);
			hotkey_inside |= (1<<ch);
			if(mode&K_SPIN)
				bputs("\b ");
			if(!(sys_status&SS_SPLITP)) {
				SAVELINE;
				attr(LIGHTGRAY);
				CRLF; 
			}
			nodesync(); 	/* read any waiting messages */
			nodemsg();		/* send a message */
			SYNC;
			if(!(sys_status&SS_SPLITP)) {
				CRLF;
				RESTORELINE; 
			}
			lncntr=0;
			hotkey_inside &= ~(1<<ch);
			return(0); 

		case CTRL_U:	/* Ctrl-U Users online */
			if(!(sys_status&SS_USERON))
				break;
			if(hotkey_inside&(1<<ch))
				return(0);
			hotkey_inside |= (1<<ch);
			if(mode&K_SPIN)
				bputs("\b ");
			if(!(sys_status&SS_SPLITP)) {
				SAVELINE;
				attr(LIGHTGRAY);
				CRLF; 
			}
			whos_online(true); 	/* list users */
			ASYNC;
			if(!(sys_status&SS_SPLITP)) {
				CRLF;
				RESTORELINE; 
			}
			lncntr=0;
			hotkey_inside &= ~(1<<ch);
			return(0); 
		case CTRL_T: /* Ctrl-T Time information */
			if(sys_status&SS_SPLITP)
				return(ch);
			if(!(sys_status&SS_USERON))
				break;
			if(hotkey_inside&(1<<ch))
				return(0);
			hotkey_inside |= (1<<ch);
			if(mode&K_SPIN)
				bputs("\b ");
			SAVELINE;
			attr(LIGHTGRAY);
			now=time(NULL);
			bprintf(text[TiLogon],timestr(logontime));
			bprintf(text[TiNow],timestr(now),smb_zonestr(sys_timezone(&cfg),NULL));
			bprintf(text[TiTimeon]
				,sectostr((uint)(now-logontime),tmp));
			bprintf(text[TiTimeLeft]
				,sectostr(timeleft,tmp));
			if(sys_status&SS_EVENT)
				bprintf(text[ReducedTime],timestr(event_time));
			SYNC;
			RESTORELINE;
			lncntr=0;
			hotkey_inside &= ~(1<<ch);
			return(0); 
		case CTRL_K:  /*  Ctrl-K Control key menu */
			if(sys_status&SS_SPLITP)
				return(ch);
			if(!(sys_status&SS_USERON))
				break;
			if(hotkey_inside&(1<<ch))
				return(0);
			hotkey_inside |= (1<<ch);
			if(mode&K_SPIN)
				bputs("\b ");
			SAVELINE;
			attr(LIGHTGRAY);
			lncntr=0;
			if(mode&K_GETSTR)
				bputs(text[GetStrMenu]);
			else
				bputs(text[ControlKeyMenu]);
			ASYNC;
			RESTORELINE;
			lncntr=0;
			hotkey_inside &= ~(1<<ch);
			return(0); 
		case ESC:
			i=kbincom(this, (mode&K_GETSTR) ? 3000:1000);
			if(i==NOINP)		// timed-out waiting for '['
				return(ESC);
			ch=i;
			if(ch!='[') {
				ungetkey(ch, /* insert: */true);
				return(ESC); 
			}
			i=j=0;
			autoterm|=ANSI; 			/* <ESC>[x means they have ANSI */
#if 0 // this seems like a "bad idea" {tm}
			if(sys_status&SS_USERON && useron.misc&AUTOTERM && !(useron.misc&ANSI)
				&& useron.number) {
				useron.misc|=ANSI;
				putuserrec(&cfg,useron.number,U_MISC,8,ultoa(useron.misc,str,16)); 
			}
#endif
			while(i<10 && j<30) {		/* up to 3 seconds */
				ch=kbincom(this, 100);
				if(ch==(NOINP&0xff)) {
					j++;
					continue;
				}
				if(ch!=';' && !isdigit((uchar)ch) && ch!='R') {    /* other ANSI */
					str[i]=0;
					switch(ch) {
						case 'A':
							return(TERM_KEY_UP);
						case 'B':
							return(TERM_KEY_DOWN);
						case 'C':
							return(TERM_KEY_RIGHT);
						case 'D':
							return(TERM_KEY_LEFT);
						case 'H':	/* ANSI:  home cursor */
							return(TERM_KEY_HOME);
						case 'V':
							return TERM_KEY_PAGEUP;
						case 'U':
							return TERM_KEY_PAGEDN;
						case 'F':	/* Xterm: cursor preceding line */
						case 'K':	/* ANSI:  clear-to-end-of-line */
							return(TERM_KEY_END);
						case '@':	/* ANSI/ECMA-048 INSERT */
							return(TERM_KEY_INSERT);
						case '~':	/* VT-220 (XP telnet.exe) */
							switch(atoi(str)) {
								case 1:
									return(TERM_KEY_HOME);
								case 2:
									return(TERM_KEY_INSERT);
								case 3:
									return(TERM_KEY_DELETE);
								case 4:
									return(TERM_KEY_END);
								case 5:
									return TERM_KEY_PAGEUP;
								case 6:
									return TERM_KEY_PAGEDN;
							}
							break;
					}
					ungetkey(ch, /* insert: */true);
					for(j = i; j > 0; j--)
						ungetkey(str[j - 1], /* insert: */true);
					ungetkey('[', /* insert: */true);
					return(ESC); 
				}
				if(ch=='R') {       /* cursor position report */
					if(mode&K_ANSI_CPR && i && !(useron.rows)) {	/* auto-detect rows */
						int	x,y;
						str[i]=0;
						if(sscanf(str,"%u;%u",&y,&x)==2) {
							lprintf(LOG_DEBUG,"Node %d received ANSI cursor position report: %ux%u"
								,cfg.node_num, x, y);
							/* Sanity check the coordinates in the response: */
							if(x >= TERM_COLS_MIN && x <= TERM_COLS_MAX) cols=x;
							if(y >= TERM_ROWS_MIN && y <= TERM_ROWS_MAX) rows=y;
						}
					}
					return(0); 
				}
				str[i++]=ch; 
			}

			for(j = i; j > 0; j--)
				ungetkey(str[j - 1], /* insert: */true);
			ungetkey('[', /* insert: */true);
			return(ESC); 
	}
	return(ch);
}