xtrn.cpp 26.2 KB
Newer Older
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
/* xtrn.cpp */

/* Synchronet external program support routines */

/* $Id$ */

/****************************************************************************
 * @format.tab-size 4		(Plain Text/Source Code File Header)			*
 * @format.use-tabs true	(see http://www.synchro.net/ptsc_hdr.html)		*
 *																			*
 * Copyright 2000 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 "execvxd.h"
#include "telnet.h"

#define XTRN_IO_BUF_LEN 5000

extern SOCKET node_socket[];

/*****************************************************************************/
/* Interrupt routine to expand WWIV Ctrl-C# codes into ANSI escape sequences */
/*****************************************************************************/
BYTE* wwiv_expand(BYTE* buf, ulong buflen, BYTE* outbuf, ulong& newlen
	,ulong user_misc, bool& ctrl_c)
{
    char	ansi_seq[32];
	ulong 	i,j,k;

    for(i=j=0;i<buflen;i++) {
        if(buf[i]==3) {	/* ctrl-c, WWIV color escape char */
            ctrl_c=true;
            continue;
        }
        if(!ctrl_c) {
            outbuf[j++]=buf[i];
            continue;
        }
        ctrl_c=false;
        if(user_misc&ANSI) {
            switch(buf[i]) {
                default:
                    strcpy(ansi_seq,"\x1b[0m");          /* low grey */
                    break;
                case '1':
                    strcpy(ansi_seq,"\x1b[0;1;36m");     /* high cyan */
                    break;
                case '2':
                    strcpy(ansi_seq,"\x1b[0;1;33m");     /* high yellow */
                    break;
                case '3':
                    strcpy(ansi_seq,"\x1b[0;35m");       /* low magenta */
                    break;
                case '4':
                    strcpy(ansi_seq,"\x1b[0;1;44m");     /* white on blue */
                    break;
                case '5':
                    strcpy(ansi_seq,"\x1b[0;32m");       /* low green */
                    break;
                case '6':
                    strcpy(ansi_seq,"\x1b[0;1;5;31m");   /* high blinking red */
                    break;
                case '7':
                    strcpy(ansi_seq,"\x1b[0;1;34m");     /* high blue */
                    break;
                case '8':
                    strcpy(ansi_seq,"\x1b[0;34m");       /* low blue */
                    break;
                case '9':
                    strcpy(ansi_seq,"\x1b[0;36m");       /* low cyan */
                    break;
            }
            for(k=0;ansi_seq[k];k++)
                outbuf[j++]=ansi_seq[k];
        }
    }
    newlen=j;
    return(outbuf);
}
// Escapes Telnet IAC (255) by doubling the IAC char
BYTE* telnet_expand(BYTE* inbuf, ulong inlen, BYTE* outbuf, ulong& newlen, bool& iac)
{
	BYTE*   first_iac;
	ulong	i,outlen;

    first_iac=(BYTE*)memchr(inbuf, TELNET_IAC, inlen);

	if(first_iac==NULL && !iac) {	/* Nothing to expand */
		newlen=inlen;
		return(inbuf);
	}

	if(first_iac!=NULL) {
		outlen=first_iac-inbuf;
		memcpy(outbuf, inbuf, outlen);
	} else
		outlen=0;

    for(i=outlen;i<inlen;i++) {
		if(iac==true) {
			outbuf[outlen++]=TELNET_IAC;
//			lprintf("Telnet IAC escaped");
		}
		if(inbuf[i]==TELNET_IAC)
			iac=true;
		else
			iac=false;
		outbuf[outlen++]=inbuf[i];
	}
    newlen=outlen;
    return(outbuf);
}
// -------------------------------------------------------------------------
// GetAddressOfOpenVxDHandle
//
// This function returns the address of OpenVxDHandle. OpenVxDHandle is a 
// KERNEL32 function that returns a ring 0 event handle that corresponds to a
// given ring 3 event handle. The ring 0 handle can be used by VxDs to
// synchronize with the Win32 app.
//
147
148
149
150

typedef HANDLE (WINAPI *OPENVXDHANDLE)(HANDLE);

OPENVXDHANDLE GetAddressOfOpenVxDHandle(void)
151
152
153
{
	HINSTANCE hK32;

154
	if ((hK32 = LoadLibrary("KERNEL32")) == NULL)
155
156
		return NULL;

157
	return((OPENVXDHANDLE)GetProcAddress(hK32, "OpenVxDHandle"));
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
}

/****************************************************************************/
/* Runs an external program 												*/
/****************************************************************************/
int sbbs_t::external(char* cmdline, long mode, char* startup_dir)
{
	char	str[256],*p,*p_startup_dir;
	char	fname[128];
    char	fullcmdline[256];
	char	realcmdline[256];
	char	comspec_str[128];
	char	title[256];
	BYTE	buf[XTRN_IO_BUF_LEN],*bp;
    BYTE 	telnet_buf[XTRN_IO_BUF_LEN*2];
    BYTE 	wwiv_buf[XTRN_IO_BUF_LEN*2];
    bool	wwiv_flag=false;
	bool	telnet_flag=false;
    bool	native=false;			// DOS program
    bool	was_online=true;
    uint	i;
    time_t	hungup=0;
	bool	nt=false;
	HANDLE	vxd=INVALID_HANDLE_VALUE;
	HANDLE	rdslot=INVALID_HANDLE_VALUE;
	HANDLE	wrslot=INVALID_HANDLE_VALUE;
	HANDLE  start_event;
	HANDLE	hungup_event=NULL;
    PROCESS_INFORMATION process_info;
	DWORD	hVM;
	DWORD	rd;
    DWORD	wr;
    DWORD	len;
    DWORD	avail;
	DWORD	dummy;	
	DWORD	retval;
	DWORD	last_error;
	DWORD	loop_since_io=0;
	struct	tm * tm_p;
	sbbsexec_start_t start;
198
	OPENVXDHANDLE OpenVxDHandle;
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214

	if(cmdline[0]=='*') {   /* Baja module */
		strcpy(str,cmdline+1);
		p=strchr(str,SP);
		if(p) {
			strcpy(main_csi.str,p+1);
			*p=0; }
		return(exec_bin(str,&main_csi)); }

	attr(cfg.color[clr_external]);        /* setup default attributes */

    strcpy(str,cmdline);		/* Set str to program name only */
    p=strchr(str,SP);
    if(p) *p=0;
    strcpy(fname,str);

215
216
    p=strrchr(fname,'/');
    if(!p) p=strrchr(fname,'\\');
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
    if(!p) p=strchr(fname,':');
    if(!p) p=fname;
    else   p++;

    for(i=0;i<cfg.total_natvpgms;i++)
        if(!stricmp(p,cfg.natvpgm[i]->name))
            break;
    if(i<cfg.total_natvpgms || mode&EX_NATIVE)
        native=true;

	if(strcspn(cmdline,"<>|")!=strlen(cmdline)) 
		sprintf(comspec_str,"%s /C ", comspec);
	else
		comspec_str[0]=0;

    if(startup_dir && cmdline[1]!=':' && cmdline[0]!='/'
    	&& cmdline[0]!='\\' && cmdline[0]!='.')
       	sprintf(fullcmdline, "%s%s%s", comspec_str, startup_dir, cmdline);
    else
    	sprintf(fullcmdline, "%s%s", comspec_str, cmdline);

	strcpy(realcmdline, fullcmdline);	// for errormsg if failed to execute

	now=time(NULL);
	tm_p=gmtime(&now);

 	if(native) { // Native (32-bit) external

		// Current environment passed to child process
		sprintf(dszlog,"DSZLOG=%sPROTOCOL.LOG",cfg.node_dir);
		if(putenv(dszlog)) 		/* Makes the DSZ LOG active */
        	errormsg(WHERE,ERR_WRITE,"environment",0);
		sprintf(sbbsnode,"SBBSNODE=%s",cfg.node_dir);
		putenv(sbbsnode);		/* create environment var to contain node num */
		sprintf(sbbsnnum,"SBBSNNUM=%d",cfg.node_num);
		putenv(sbbsnnum);	   /* create environment var to contain node num */

    } else { // DOS external

		sprintf(str,"%sDOSXTRN.RET", cfg.node_dir);
		remove(str);

    	// Create temporary environment file
    	sprintf(str,"%sDOSXTRN.ENV", cfg.node_dir);
        FILE* fp=fopen(str,"w");
        if(fp==NULL) {
        	errormsg(WHERE, ERR_CREATE, str, 0);
            return(1);
        }
        fprintf(fp, "%s\n", fullcmdline);
		fprintf(fp, "DSZLOG=%sPROTOCOL.LOG\n", cfg.node_dir);
        fprintf(fp, "SBBSCTRL=%s\n", cfg.ctrl_dir);
        fprintf(fp, "SBBSNODE=%s\n", cfg.node_dir);
        fprintf(fp, "SBBSNNUM=%d\n", cfg.node_num);
		if(tm_p!=NULL) {
			fprintf(fp, "DAY=%u\n", tm_p->tm_mday);
			fprintf(fp, "WEEKDAY=%s\n",wday[tm_p->tm_wday]);
			fprintf(fp, "MONTH=%u\n",tm_p->tm_mon+1);
			fprintf(fp, "YEAR=%u\n",1900+tm_p->tm_year);
		}
        fclose(fp);

        sprintf(fullcmdline, "%sDOSXTRN.EXE %s", cfg.exec_dir, str);

		if((retval=WaitForSingleObject(exec_mutex,5000))!=WAIT_OBJECT_0) {
			errormsg(WHERE, ERR_TIMEOUT, "exec_mutex", retval);
			return(GetLastError());
		}

		OpenVxDHandle=GetAddressOfOpenVxDHandle();

		if(!(mode&EX_OFFLINE) && OpenVxDHandle==NULL) {	// Windows NT/2000
			nt=true;
			i=SBBSEXEC_MODE_FOSSIL;
			if(mode&EX_INR)
           		i|=SBBSEXEC_MODE_DOS_IN;
			if(mode&EX_OUTR)
        		i|=SBBSEXEC_MODE_DOS_OUT;
			sprintf(str," NT %d %d",cfg.node_num,i);
			strcat(fullcmdline,str);

			sprintf(str,"sbbsexec_hungup%d",cfg.node_num);
			if((hungup_event=CreateEvent(
				 NULL	// pointer to security attributes
				,TRUE	// flag for manual-reset event
				,FALSE  // flag for initial state
				,str	// pointer to event-object name
				))==NULL) {
				last_error=GetLastError();
				ReleaseMutex(exec_mutex);
				SetLastError(last_error);
				errormsg(WHERE, ERR_CREATE, "exec start event", 0);
				return(GetLastError());
			}

			sprintf(str,"\\\\.\\mailslot\\sbbsexec\\rd%d"
				,cfg.node_num);
			rdslot=CreateMailslot(str
				,sizeof(buf)			// Maximum message size (0=unlimited)
				,0						// Read time-out
				,NULL);                 // Security
			if(rdslot==INVALID_HANDLE_VALUE) {
				last_error=GetLastError();
				ReleaseMutex(exec_mutex);
				CloseHandle(hungup_event);
				SetLastError(last_error);
				errormsg(WHERE, ERR_CREATE, str, 0);
				return(GetLastError());
			}
		}
		else if(!(mode&EX_OFFLINE)) {

   			// Load vxd to intercept interrupts

			sprintf(str,"\\\\.\\%s%s",cfg.exec_dir, SBBSEXEC_VXD);
			if((vxd=CreateFile(str,0,0,0
				,CREATE_NEW, FILE_FLAG_DELETE_ON_CLOSE,0))
				 ==INVALID_HANDLE_VALUE) {
				last_error=GetLastError();
				ReleaseMutex(exec_mutex);
				SetLastError(last_error);
				errormsg(WHERE, ERR_OPEN, str, 0);
				return(GetLastError());
			}

			if((start_event=CreateEvent(
				 NULL	// pointer to security attributes
				,TRUE	// flag for manual-reset event
				,FALSE  // flag for initial state
				,NULL	// pointer to event-object name
				))==NULL) {
				last_error=GetLastError();
				ReleaseMutex(exec_mutex);
				CloseHandle(vxd);
				SetLastError(last_error);
				errormsg(WHERE, ERR_CREATE, "exec start event", 0);
				return(GetLastError());
			}

			if(OpenVxDHandle!=NULL)
				start.event=OpenVxDHandle(start_event);
			else
				start.event=start_event;

			start.mode=SBBSEXEC_MODE_FOSSIL;
			if(mode&EX_INR)
           		start.mode|=SBBSEXEC_MODE_DOS_IN;
			if(mode&EX_OUTR)
        		start.mode|=SBBSEXEC_MODE_DOS_OUT;

			if(!DeviceIoControl(
				vxd,					// handle to device of interest
				SBBSEXEC_IOCTL_START,	// control code of operation to perform
				&start,					// pointer to buffer to supply input data
				sizeof(start),			// size of input buffer
				NULL,					// pointer to buffer to receive output data
				0,						// size of output buffer
				&rd,					// pointer to variable to receive output byte count
				NULL 					// Overlapped I/O
				)) {
				last_error=GetLastError();
				ReleaseMutex(exec_mutex);
				CloseHandle(vxd);
				SetLastError(last_error);
				errormsg(WHERE, ERR_IOCTL, SBBSEXEC_VXD, SBBSEXEC_IOCTL_START);
				return(GetLastError());
			}
		}
    }

	if(startup_dir!=NULL && startup_dir[0])
		p_startup_dir=startup_dir;
	else
		p_startup_dir=NULL;
    STARTUPINFO startup_info={0};
    startup_info.cb=sizeof(startup_info);
	if(mode&EX_OFFLINE)
		startup_info.lpTitle=NULL;
	else {
		sprintf(title,"%s running %s on node %d"
			,useron.number ? useron.alias : "Event"
			,realcmdline
			,cfg.node_num);
		startup_info.lpTitle=title;
	}
    if(cfg.startup->options&BBS_OPT_XTRN_MINIMIZED) {
    	startup_info.wShowWindow=SW_SHOWMINNOACTIVE;
        startup_info.dwFlags|=STARTF_USESHOWWINDOW;
    }

	/* temporary */
	if(native) {
		FILE* fp;
		sprintf(fname,"%sDOOR32.SYS",cfg.node_dir);
		fp=fopen(fname,"wb");
		fprintf(fp,"2\r\n%d\r\n38400\r\nSynchronet %s%c\r\n%d\r\n%s\r\n%s\r\n%d\r\n%d\r\n"
			"%d\r\n%d\r\n"
			,client_socket_dup
			,VERSION,REVISION
			,useron.number
			,useron.name
			,useron.alias
			,useron.level
			,timeleft/60
			,useron.misc&ANSI ? 1 : 0
			,cfg.node_num);
		fclose(fp);
		SuspendThread(input_thread);
	}

    if(!CreateProcess(
		NULL,			// pointer to name of executable module
		fullcmdline,  	// pointer to command line string
		NULL,  			// process security attributes
		NULL,   		// thread security attributes
		TRUE,  			// handle inheritance flag
		CREATE_NEW_CONSOLE|CREATE_SEPARATE_WOW_VDM, // creation flags
        NULL,  			// pointer to new environment block
		p_startup_dir,	// pointer to current directory name
		&startup_info,  // pointer to STARTUPINFO
		&process_info  	// pointer to PROCESS_INFORMATION
		)) {
		last_error=GetLastError();
        ReleaseMutex(exec_mutex);
		if(vxd!=INVALID_HANDLE_VALUE)
			CloseHandle(vxd);
		if(hungup_event!=NULL)
			CloseHandle(hungup_event);
		if(native)
			ResumeThread(input_thread);
		SetLastError(last_error);
        errormsg(WHERE, ERR_EXEC, realcmdline, mode);
        return(GetLastError());
    }

	if(!native) {

		if(!(mode&EX_OFFLINE) && !nt) {
    		// Wait for notification from VXD that new VM has started
			if((retval=WaitForSingleObject(start_event, 5000))!=WAIT_OBJECT_0) {
				last_error=GetLastError();
				ReleaseMutex(exec_mutex);
				CloseHandle(vxd);
				CloseHandle(start_event);
				SetLastError(last_error);
				errormsg(WHERE, ERR_TIMEOUT, "start_event", retval);
				return(GetLastError());
			}

			CloseHandle(start_event);

			if(!DeviceIoControl(
				vxd,					// handle to device of interest
				SBBSEXEC_IOCTL_COMPLETE,	// control code of operation to perform
				NULL,					// pointer to buffer to supply input data
				0,						// size of input buffer
				&hVM,					// pointer to buffer to receive output data
				sizeof(hVM),			// size of output buffer
				&rd,					// pointer to variable to receive output byte count
				NULL					// Overlapped I/O
				)) {
				last_error=GetLastError();
				ReleaseMutex(exec_mutex);
				CloseHandle(vxd);
				SetLastError(last_error);
				errormsg(WHERE, ERR_IOCTL, SBBSEXEC_VXD, SBBSEXEC_IOCTL_COMPLETE);
				return(GetLastError());
			}
		}
        ReleaseMutex(exec_mutex);
	}

    // Executing app, monitor
    retval=STILL_ACTIVE;
    while(1) {
        if(!online && !(mode&EX_OFFLINE)) { // Tell VXD/VDD and external that user hung-up
        	if(was_online) {
				logline("X!","Hung-up in external program");
            	hungup=time(NULL);
				if(!native) {
					if(nt)
						SetEvent(hungup_event);
					else if(!DeviceIoControl(
						vxd,		// handle to device of interest
						SBBSEXEC_IOCTL_DISCONNECT,	// operation to perform
						&hVM,		// pointer to buffer to supply input data
						sizeof(hVM),// size of input buffer
						NULL,		// pointer to buffer to receive output data
						0,			// size of output buffer
						&rd,		// pointer to variable to receive output byte count
						NULL		// Overlapped I/O
						)) {
						errormsg(WHERE, ERR_IOCTL, SBBSEXEC_VXD, SBBSEXEC_IOCTL_DISCONNECT);
						break;
					}
				}
	            was_online=false;
            }
            if(hungup && time(NULL)-hungup>5) 
                TerminateProcess(process_info.hProcess, 2112);
        }
		if(native || mode&EX_OFFLINE) {
            if(GetExitCodeProcess(process_info.hProcess, &retval)==FALSE) {
                errormsg(WHERE, ERR_CHK, "ExitCodeProcess"
                   ,(DWORD)process_info.hProcess);
                break;
            }
            if(retval!=STILL_ACTIVE)
                break;
        	Sleep(500);
		} else {

			if(nt) {	// Windows NT/2000

				/* Write to VDD */

				wr=RingBufPeek(&inbuf,buf,sizeof(buf));
				if(wr) {
					if(wrslot==INVALID_HANDLE_VALUE) {
						sprintf(str,"\\\\.\\mailslot\\sbbsexec\\wr%d"
							,cfg.node_num);
						wrslot=CreateFile(str
							,GENERIC_WRITE
							,FILE_SHARE_READ
							,NULL
							,OPEN_EXISTING
							,FILE_ATTRIBUTE_NORMAL
							,(HANDLE) NULL);
#if 0
						if(wrslot==INVALID_HANDLE_VALUE) {
							errormsg(WHERE,ERR_OPEN,str,0);
							break;
						}
#endif
					}
					if(wrslot!=INVALID_HANDLE_VALUE
						&& WriteFile(wrslot,buf,wr,&len,NULL)==TRUE) {
						RingBufRead(&inbuf, NULL, len);
						wr=len;
					} else		// VDD not loaded yet
						wr=0;
				}

				/* Read from VDD */

				len=sizeof(buf);
				avail=RingBufFree(&outbuf);
				if(len>avail)
            		len=avail;
				if(ReadFile(rdslot,buf,len,&rd,NULL)==TRUE && rd>0) {
					if(mode&EX_WWIV) {
                		bp=wwiv_expand(buf, rd, wwiv_buf, rd, useron.misc, wwiv_flag);
						if(rd>sizeof(wwiv_buf))
							errorlog("WWIV_BUF OVERRUN");
					} else {
                		bp=telnet_expand(buf, rd, telnet_buf, rd, telnet_flag);
						if(rd>sizeof(telnet_buf))
							errorlog("TELNET_BUF OVERRUN");
					}
					RingBufWrite(&outbuf, bp, rd);
577
					sem_post(&output_sem);
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
				}
			} else {	// Windows 9x

				/* Write to VXD */

				wr=RingBufPeek(&inbuf, buf+sizeof(hVM),sizeof(buf)-sizeof(hVM));
				if(wr) {
					*(DWORD*)buf=hVM;
					wr+=sizeof(hVM);
					if(!DeviceIoControl(
						vxd,					// handle to device of interest
						SBBSEXEC_IOCTL_WRITE,	// control code of operation to perform
						buf,					// pointer to buffer to supply input data
						wr,						// size of input buffer
						&rd,					// pointer to buffer to receive output data
						sizeof(rd),				// size of output buffer
						&dummy,	 				// pointer to variable to receive output byte count
						NULL					// Overlapped I/O
						)) {
						errormsg(WHERE, ERR_IOCTL, SBBSEXEC_VXD, SBBSEXEC_IOCTL_READ);
						break;
					}
					RingBufRead(&inbuf, NULL, rd);
					wr=rd;
				}
        		/* Read from VXD */
				rd=0;
				len=sizeof(buf);
				avail=RingBufFree(&outbuf);
				if(len>avail)
            		len=avail;
				if(len && avail>=RingBufFull(&outbuf)) {
					if(!DeviceIoControl(
						vxd,					// handle to device of interest
						SBBSEXEC_IOCTL_READ,	// control code of operation to perform
						&hVM,					// pointer to buffer to supply input data
						sizeof(hVM),			// size of input buffer
						buf,					// pointer to buffer to receive output data
						len,					// size of output buffer
						&rd,					// pointer to variable to receive output byte count
						NULL					// Overlapped I/O
						)) {
						errormsg(WHERE, ERR_IOCTL, SBBSEXEC_VXD, SBBSEXEC_IOCTL_READ);
						break;
					}
#if 0
					if(rd>1)
                		lprintf("read %d bytes from xtrn", rd);
#endif

					if(mode&EX_WWIV)
                		bp=wwiv_expand(buf, rd, wwiv_buf, rd, useron.misc, wwiv_flag);
					else
                		bp=telnet_expand(buf, rd, telnet_buf, rd, telnet_flag);
					RingBufWrite(&outbuf, bp, rd);
633
					sem_post(&output_sem);
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
				}
			}
            if(!rd && !wr) {
				if(++loop_since_io>=1000) {
	                if(GetExitCodeProcess(process_info.hProcess, &retval)==FALSE) {
	                    errormsg(WHERE, ERR_CHK, "ExitCodeProcess"
						,(DWORD)process_info.hProcess);
						break;
					}
					if(retval!=STILL_ACTIVE)  {
#if 0
						if(hungup)
							Sleep(5000);	// Give the application time to close files
#endif
	                    break;
					}
					if(!(loop_since_io%3000)) {
//						OutputDebugString(".");
						getnodedat(cfg.node_num,&thisnode,0);
						if(thisnode.misc&NODE_INTR)
							break;
					}
					Sleep(1);
				}
            } else
				loop_since_io=0;
        }
	}

	if(!native && !(mode&EX_OFFLINE) && !nt) {
		if(!DeviceIoControl(
			vxd,					// handle to device of interest
			SBBSEXEC_IOCTL_STOP,	// control code of operation to perform
			&hVM,					// pointer to buffer to supply input data
			sizeof(hVM),			// size of input buffer
			NULL,					// pointer to buffer to receive output data
			0,						// size of output buffer
			&rd,					// pointer to variable to receive output byte count
			NULL					// Overlapped I/O
			)) {
			errormsg(WHERE, ERR_IOCTL, SBBSEXEC_VXD, SBBSEXEC_IOCTL_STOP);
		}
	}

    if(retval==STILL_ACTIVE)
	    TerminateProcess(process_info.hProcess, GetLastError());

    if(vxd!=INVALID_HANDLE_VALUE)
		CloseHandle(vxd);

	if(rdslot!=INVALID_HANDLE_VALUE)
		CloseHandle(rdslot);

	if(wrslot!=INVALID_HANDLE_VALUE)
		CloseHandle(wrslot);

	if(hungup_event!=NULL)
		CloseHandle(hungup_event);

	if(native)
		ResumeThread(input_thread);
	else {	// Get return value
    	sprintf(str,"%sDOSXTRN.RET", cfg.node_dir);
        FILE* fp=fopen(str,"r");
        if(fp!=NULL) {
			fscanf(fp,"%d",&retval);
			fclose(fp);
		}
	}

	curatr=0;	// Can't guarantee current attributes

//	lprintf("%s returned %d",realcmdline, retval);

	return(retval);
}

uint fakeriobp=0xffff;

/*****************************************************************************/
/* Returns command line generated from instr with %c replacments             */
/*****************************************************************************/
char * sbbs_t::cmdstr(char *instr, char *fpath, char *fspec, char *outstr)
{
	char	str[256],*cmd;
    int		i,j,len;

    if(outstr==NULL)
        cmd=cmdstr_output;
    else
        cmd=outstr;
    len=strlen(instr);
    for(i=j=0;i<len && j<sizeof(cmdstr_output);i++) {
        if(instr[i]=='%') {
            i++;
            cmd[j]=0;
            switch(toupper(instr[i])) {
                case 'A':   /* User alias */
                    strcat(cmd,useron.alias);
                    break;
                case 'B':   /* Baud (DTE) Rate */
                    strcat(cmd,ultoa(dte_rate,str,10));
                    break;
                case 'C':   /* Connect Description */
                    strcat(cmd,connection);
                    break;
                case 'D':   /* Connect (DCE) Rate */
                    strcat(cmd,ultoa((ulong)cur_rate,str,10));
                    break;
                case 'E':   /* Estimated Rate */
                    strcat(cmd,ultoa((ulong)cur_cps*10,str,10));
                    break;
                case 'F':   /* File path */
                    strcat(cmd,fpath);
                    break;
                case 'G':   /* Temp directory */
                    strcat(cmd,cfg.temp_dir);
                    break;
                case 'H':   /* Port Handle or Hardware Flow Control */
753
                    strcat(cmd,ultoa(client_socket_dup,str,10));
754
755
                    break;
                case 'I':   /* UART IRQ Line */
756
                    strcat(cmd,ultoa(cfg.com_irq,str,10));
757
758
759
760
761
762
763
764
                    break;
                case 'J':
                    strcat(cmd,cfg.data_dir);
                    break;
                case 'K':
                    strcat(cmd,cfg.ctrl_dir);
                    break;
                case 'L':   /* Lines per message */
765
                    strcat(cmd,ultoa(cfg.level_linespermsg[useron.level],str,10));
766
767
768
769
770
771
772
773
774
775
776
                    break;
                case 'M':   /* Minutes (credits) for user */
                    strcat(cmd,ultoa(useron.min,str,10));
                    break;
                case 'N':   /* Node Directory (same as SBBSNODE environment var) */
                    strcat(cmd,cfg.node_dir);
                    break;
                case 'O':   /* SysOp */
                    strcat(cmd,cfg.sys_op);
                    break;
                case 'P':   /* COM Port */
777
                    strcat(cmd,ultoa(online==ON_LOCAL ? 0:cfg.com_port,str,10));
778
779
780
781
782
                    break;
                case 'Q':   /* QWK ID */
                    strcat(cmd,cfg.sys_id);
                    break;
                case 'R':   /* Rows */
783
                    strcat(cmd,ultoa(rows,str,10));
784
785
786
787
788
789
                    break;
                case 'S':   /* File Spec */
                    strcat(cmd,fspec);
                    break;
                case 'T':   /* Time left in seconds */
                    gettimeleft();
790
                    strcat(cmd,ultoa(timeleft,str,10));
791
792
                    break;
                case 'U':   /* UART I/O Address (in hex) */
793
                    strcat(cmd,ultoa(cfg.com_base,str,16));
794
795
796
797
798
799
                    break;
                case 'V':   /* Synchronet Version */
                    sprintf(str,"%s%c",VERSION,REVISION);
                    break;
                case 'W':   /* Time-slice API type (mswtype) */
#if 0 //ndef __FLAT__
800
                    strcat(cmd,ultoa(mswtyp,str,10));
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
#endif
                    break;
                case 'X':
                    strcat(cmd,cfg.shell[useron.shell]->code);
                    break;
                case '&':   /* Address of msr */
                    sprintf(str,"%lu",&fakeriobp);
                    strcat(cmd,str);
                    break;
                case 'Y':
                    strcat(cmd,
                    comspec
                    );
                    break;
                case 'Z':
                    strcat(cmd,cfg.text_dir);
                    break;
                case '!':   /* EXEC Directory */
                    strcat(cmd,cfg.exec_dir);
                    break;
                case '#':   /* Node number (same as SBBSNNUM environment var) */
                    sprintf(str,"%d",cfg.node_num);
                    strcat(cmd,str);
                    break;
                case '*':
                    sprintf(str,"%03d",cfg.node_num);
                    strcat(cmd,str);
                    break;
                case '$':   /* Credits */
                    strcat(cmd,ultoa(useron.cdt+useron.freecdt,str,10));
                    break;
                case '%':   /* %% for percent sign */
                    strcat(cmd,"%");
                    break;
                default:    /* unknown specification */
                    if(isdigit(instr[i])) {
                        sprintf(str,"%0*d",instr[i]&0xf,useron.number);
                        strcat(cmd,str); }
                    break; }
            j=strlen(cmd); }
        else
            cmd[j++]=instr[i]; }
    cmd[j]=0;

    return(cmd);
}