xtrn.cpp 40.5 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
/* 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 "telnet.h"

42
43
44
#ifdef __unix__
	#include <sys/wait.h>	// WEXITSTATUS

45
46
47
48
49
50
#ifdef __FreeBSD__
	#include <libutil.h>	// forkpty()
#else
	#include <pty.h>
#endif
	#include <termios.h>
51
	static void setup_term(int fd, char* term);	
52
#endif
53
54
#define XTRN_IO_BUF_LEN 5000

55
56
57
58
59
60
61
62
63
64
/*****************************************************************************/
/* 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++) {
65
        if(buf[i]==CTRL_C) {	/* WWIV color escape char */
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
            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);
}
114
115

/*****************************************************************************/
116
// Escapes Telnet IAC (255) by doubling the IAC char
117
/*****************************************************************************/
118
BYTE* telnet_expand(BYTE* inbuf, ulong inlen, BYTE* outbuf, ulong& newlen)
119
120
121
122
123
124
{
	BYTE*   first_iac;
	ulong	i,outlen;

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

125
	if(first_iac==NULL) {	/* Nothing to expand */
126
127
128
129
		newlen=inlen;
		return(inbuf);
	}

130
131
	outlen=first_iac-inbuf;
	memcpy(outbuf, inbuf, outlen);
132
133
134

    for(i=outlen;i<inlen;i++) {
		if(inbuf[i]==TELNET_IAC)
135
			outbuf[outlen++]=TELNET_IAC;
136
137
138
139
140
		outbuf[outlen++]=inbuf[i];
	}
    newlen=outlen;
    return(outbuf);
}
141

142
143
#define XTRN_LOADABLE_MODULE								\
	if(cmdline[0]=='*') {   /* Baja module or JavaScript */	\
144
		SAFECOPY(str,cmdline+1);							\
145
146
		p=strchr(str,SP);									\
		if(p) {												\
147
			strcpy(main_csi.str,p+1);						\
148
149
150
151
152
153
154
155
156
157
158
159
160
161
			*p=0; 											\
		} else												\
			main_csi.str[0]=0;								\
		if(!strchr(str,'.'))								\
			strcat(str,".bin");								\
		return(exec_bin(str,&main_csi));					\
	}														
#ifdef JAVASCRIPT
	#define XTRN_LOADABLE_JS_MODULE							\
	if(cmdline[0]=='?') 	/* JavaScript */				\
		return(js_execfile(cmdline+1))						
#else
	#define XTRN_LOADABLE_JS_MODULE
#endif
162
163
164
165
166
167
168

#ifdef _WIN32

#include "execvxd.h"	/* Win9X FOSSIL VxD API */

extern SOCKET node_socket[];

169
170
171
172
173
174
175
176
// -------------------------------------------------------------------------
// 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.
//
177
178
179
typedef HANDLE (WINAPI *OPENVXDHANDLE)(HANDLE);

OPENVXDHANDLE GetAddressOfOpenVxDHandle(void)
180
{
181
	return((OPENVXDHANDLE)GetProcAddress(hK32, "OpenVxDHandle"));
182
183
}

184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
/*****************************************************************************/
// Expands Single CR to CRLF
/*****************************************************************************/
BYTE* cr_expand(BYTE* inbuf, ulong inlen, BYTE* outbuf, ulong& newlen)
{
	ulong	i,j;

	for(i=j=0;i<inlen;i++) {
		outbuf[j++]=inbuf[i];
		if(inbuf[i]=='\r')
			outbuf[j++]='\n';
	}
	newlen=j;
    return(outbuf);
}

200
201
202
203
204
205
206
207
208
209
210
/* Clean-up resources while preserving current LastError value */
#define XTRN_CLEANUP												\
	last_error=GetLastError();										\
    if(vxd!=INVALID_HANDLE_VALUE)		CloseHandle(vxd);			\
	if(rdslot!=INVALID_HANDLE_VALUE)	CloseHandle(rdslot);		\
	if(wrslot!=INVALID_HANDLE_VALUE)	CloseHandle(wrslot);		\
	if(start_event!=NULL)				CloseHandle(start_event);	\
	if(hungup_event!=NULL)				CloseHandle(hungup_event);	\
	ReleaseMutex(exec_mutex);										\
	SetLastError(last_error)

211
212
213
214
215
216
217
218
219
220
221
222
223
/****************************************************************************/
/* 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];
224
    BYTE 	output_buf[XTRN_IO_BUF_LEN*2];
225
226
    BYTE 	wwiv_buf[XTRN_IO_BUF_LEN*2];
    bool	wwiv_flag=false;
227
    bool	native=false;			// DOS program by default
228
	bool	nt=false;				// WinNT/2K? 
229
    bool	was_online=true;
230
	bool	rio_abortable_save;
231
	bool	use_pipes=false;	// NT-compatible console redirection
232
	uint	i;
233
234
235
236
    time_t	hungup=0;
	HANDLE	vxd=INVALID_HANDLE_VALUE;
	HANDLE	rdslot=INVALID_HANDLE_VALUE;
	HANDLE	wrslot=INVALID_HANDLE_VALUE;
237
	HANDLE  start_event=NULL;
238
	HANDLE	hungup_event=NULL;
239
240
	HANDLE	rdoutpipe;
	HANDLE	wrinpipe;
241
242
243
244
245
246
247
248
249
250
251
252
    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;
253
	OPENVXDHANDLE OpenVxDHandle;
254

255
256
257
	if(online==ON_LOCAL)
		eprintf("Executing external: %s",cmdline);

258
259
	XTRN_LOADABLE_MODULE;
	XTRN_LOADABLE_JS_MODULE;
260
261
262

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

263
    SAFECOPY(str,cmdline);		/* Set str to program name only */
264
265
    p=strchr(str,SP);
    if(p) *p=0;
266
    SAFECOPY(fname,str);
267

268
269
    p=strrchr(fname,'/');
    if(!p) p=strrchr(fname,'\\');
270
271
272
273
274
275
276
277
278
279
    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;

rswindell's avatar
rswindell committed
280
	if(mode&EX_SH || strcspn(cmdline,"<>|")!=strlen(cmdline)) 
281
282
283
284
285
286
287
288
289
290
		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);

291
	SAFECOPY(realcmdline, fullcmdline);	// for errormsg if failed to execute
292
293

	now=time(NULL);
294
	tm_p=localtime(&now);
295

296
297
298
299
300
	OpenVxDHandle=GetAddressOfOpenVxDHandle();

	if(OpenVxDHandle==NULL) 
		nt=true;	// Windows NT/2000

301
302
303
304
305
306
	if(!nt && !native && !(cfg.xtrn_misc&XTRN_NO_MUTEX)
		&& (retval=WaitForSingleObject(exec_mutex,5000))!=WAIT_OBJECT_0) {
		errormsg(WHERE, ERR_TIMEOUT, "exec_mutex", retval);
		return(GetLastError());
	}

307
308
309
	if(native && mode&EX_OUTR && !(mode&EX_OFFLINE))
		use_pipes=true;

310
 	if(native) { // Native (32-bit) external
311
312
313
314

		// Current environment passed to child process
		sprintf(dszlog,"DSZLOG=%sPROTOCOL.LOG",cfg.node_dir);
		sprintf(sbbsnode,"SBBSNODE=%s",cfg.node_dir);
315
		sprintf(sbbsctrl,"SBBSCTRL=%s",cfg.ctrl_dir);
316
317
318
		sprintf(sbbsdata,"SBBSDATA=%s",cfg.data_dir);
		sprintf(sbbsexec,"SBBSEXEC=%s",cfg.exec_dir);
		sprintf(sbbsnnum,"SBBSNNUM=%d",cfg.node_num);
319
320
		putenv(dszlog); 		/* Makes the DSZ LOG active */
		putenv(sbbsnode);
321
		putenv(sbbsctrl);
322
323
324
		putenv(sbbsdata);
		putenv(sbbsexec);
		putenv(sbbsnnum);
325
326
327
328
329
330
		if(tm_p!=NULL) {		/* date/time env vars */
			sprintf(env_day			,"DAY=%02u"			,tm_p->tm_mday);
			sprintf(env_weekday		,"WEEKDAY=%s"		,wday[tm_p->tm_wday]);
			sprintf(env_monthname	,"MONTHNAME=%s"		,mon[tm_p->tm_mon]);
			sprintf(env_month		,"MONTH=%02u"		,tm_p->tm_mon+1);
			sprintf(env_year		,"YEAR=%u"			,1900+tm_p->tm_year);
331
332
333
334
			putenv(env_day);
			putenv(env_weekday);
			putenv(env_monthname);
			putenv(env_month);
335
336
			if(putenv(env_year))
        		errormsg(WHERE,ERR_WRITE,"environment",0);
337
		}
338
339
340
341
342
343
344
345
346
347

    } 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) {
348
			XTRN_CLEANUP;
349
        	errormsg(WHERE, ERR_CREATE, str, 0);
350
            return(errno);
351
352
353
354
        }
        fprintf(fp, "%s\n", fullcmdline);
		fprintf(fp, "DSZLOG=%sPROTOCOL.LOG\n", cfg.node_dir);
        fprintf(fp, "SBBSNODE=%s\n", cfg.node_dir);
355
356
357
        fprintf(fp, "SBBSCTRL=%s\n", cfg.ctrl_dir);
		fprintf(fp, "SBBSDATA=%s\n", cfg.data_dir);
		fprintf(fp, "SBBSEXEC=%s\n", cfg.exec_dir);
358
        fprintf(fp, "SBBSNNUM=%d\n", cfg.node_num);
359
		if(tm_p!=NULL) {	/* date/time env vars */
360
			fprintf(fp, "DAY=%02u\n", tm_p->tm_mday);
361
			fprintf(fp, "WEEKDAY=%s\n",wday[tm_p->tm_wday]);
362
			fprintf(fp, "MONTHNAME=%s\n",mon[tm_p->tm_mon]);
363
			fprintf(fp, "MONTH=%02u\n",tm_p->tm_mon+1);
364
365
366
367
368
369
			fprintf(fp, "YEAR=%u\n",1900+tm_p->tm_year);
		}
        fclose(fp);

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

370
		if(!(mode&EX_OFFLINE) && nt) {	// Windows NT/2000
371
372
373
374
375
			i=SBBSEXEC_MODE_FOSSIL;
			if(mode&EX_INR)
           		i|=SBBSEXEC_MODE_DOS_IN;
			if(mode&EX_OUTR)
        		i|=SBBSEXEC_MODE_DOS_OUT;
376
377
			sprintf(str," NT %u %u %u"
				,cfg.node_num,i,startup->xtrn_polls_before_yield);
378
379
380
381
382
383
384
385
386
			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) {
387
				XTRN_CLEANUP;
388
389
390
391
392
393
394
395
396
397
398
				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) {
399
				XTRN_CLEANUP;
400
401
402
403
404
405
406
407
408
409
410
411
				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) {
412
				XTRN_CLEANUP;
413
414
415
416
417
418
419
420
421
422
				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) {
423
				XTRN_CLEANUP;
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
				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;

439
440
			sprintf(str," 95 %u %u %u"
				,cfg.node_num,start.mode,startup->xtrn_polls_before_yield);
441
442
			strcat(fullcmdline,str);

443
444
445
446
447
448
449
450
451
452
			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
				)) {
453
				XTRN_CLEANUP;
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
				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;
	}
475
    if(startup->options&BBS_OPT_XTRN_MINIMIZED) {
476
477
478
    	startup_info.wShowWindow=SW_SHOWMINNOACTIVE;
        startup_info.dwFlags|=STARTF_USESHOWWINDOW;
    }
479
480
481
482
483
484
485
486
487
	if(use_pipes) {
		// Set up the security attributes struct.
		SECURITY_ATTRIBUTES sa;
		memset(&sa,0,sizeof(sa));
		sa.nLength= sizeof(SECURITY_ATTRIBUTES);
		sa.lpSecurityDescriptor = NULL;
		sa.bInheritHandle = TRUE;

		// Create the child output pipe.
488
		if(!CreatePipe(&rdoutpipe,&startup_info.hStdOutput,&sa,0)) {
489
490
491
492
493
494
			errormsg(WHERE,ERR_CREATE,"stdout pipe",0);
			return(GetLastError());
		}
		startup_info.hStdError=startup_info.hStdOutput;

		// Create the child input pipe.
495
		if(!CreatePipe(&startup_info.hStdInput,&wrinpipe,&sa,0)) {
496
497
498
			errormsg(WHERE,ERR_CREATE,"stdin pipe",0);
			return(GetLastError());
		}
499

500
501
502
503
504
505
506
507
508
509
510
511
512
513
		DuplicateHandle(
			GetCurrentProcess(), rdoutpipe,
			GetCurrentProcess(), &rdslot, 0, FALSE, DUPLICATE_SAME_ACCESS);

		DuplicateHandle(
			GetCurrentProcess(), wrinpipe,
			GetCurrentProcess(), &wrslot, 0, FALSE, DUPLICATE_SAME_ACCESS);

		CloseHandle(rdoutpipe);
		CloseHandle(wrinpipe);

		startup_info.dwFlags|=STARTF_USESTDHANDLES|STARTF_USESHOWWINDOW;
    	startup_info.wShowWindow=SW_HIDE;
	}
514
	if(native && !(mode&EX_OFFLINE)) {
515
		/* temporary */
516
517
518
		FILE* fp;
		sprintf(fname,"%sDOOR32.SYS",cfg.node_dir);
		fp=fopen(fname,"wb");
519
		fprintf(fp,"%d\r\n%d\r\n38400\r\n%s%c\r\n%d\r\n%s\r\n%s\r\n%d\r\n%d\r\n"
520
			"%d\r\n%d\r\n"
521
522
			,mode&EX_OUTR ? 0 /* Local */ : 2 /* Telnet */
			,mode&EX_OUTR ? INVALID_SOCKET : client_socket_dup
523
			,VERSION_NOTICE,REVISION
524
525
526
527
528
529
530
531
			,useron.number
			,useron.name
			,useron.alias
			,useron.level
			,timeleft/60
			,useron.misc&ANSI ? 1 : 0
			,cfg.node_num);
		fclose(fp);
532
533

		/* not temporary */
534
535
		if(!(mode&EX_INR)) 
			pthread_mutex_lock(&input_thread_mutex);
536
537
538
539
540
541
542
	}

    if(!CreateProcess(
		NULL,			// pointer to name of executable module
		fullcmdline,  	// pointer to command line string
		NULL,  			// process security attributes
		NULL,   		// thread security attributes
543
		native && !(mode&EX_OFFLINE),	 			// handle inheritance flag
544
		CREATE_NEW_CONSOLE/*|CREATE_SEPARATE_WOW_VDM*/, // creation flags
545
546
547
548
549
        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
		)) {
550
		XTRN_CLEANUP;
551
		if(native && !(mode&EX_OFFLINE))
552
553
			pthread_mutex_unlock(&input_thread_mutex);
		SetLastError(last_error);	/* Restore LastError */
554
555
556
557
        errormsg(WHERE, ERR_EXEC, realcmdline, mode);
        return(GetLastError());
    }

558
559
560
561
562
563
564
565
566
567
568
#if 0
	char dbgstr[256];
	sprintf(dbgstr,"Node %d created: hProcess %X hThread %X processID %X threadID %X\n"
		,cfg.node_num
		,process_info.hProcess 
		,process_info.hThread 
		,process_info.dwProcessId 
		,process_info.dwThreadId); 
	OutputDebugString(dbgstr);
#endif

569
570
	CloseHandle(process_info.hThread);

571
572
573
574
575
	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) {
576
				XTRN_CLEANUP;
577
                TerminateProcess(process_info.hProcess, __LINE__);
578
				CloseHandle(process_info.hProcess);
579
580
581
582
583
				errormsg(WHERE, ERR_TIMEOUT, "start_event", retval);
				return(GetLastError());
			}

			CloseHandle(start_event);
584
			start_event=NULL;	/* Mark as closed */
585
586
587
588
589
590
591
592
593
594
595

			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
				)) {
596
				XTRN_CLEANUP;
597
                TerminateProcess(process_info.hProcess, __LINE__);
598
				CloseHandle(process_info.hProcess);
599
600
601
602
603
				errormsg(WHERE, ERR_IOCTL, SBBSEXEC_VXD, SBBSEXEC_IOCTL_COMPLETE);
				return(GetLastError());
			}
		}
	}
604
    ReleaseMutex(exec_mutex);
605

606
	/* Disable Ctrl-C checking */
607
608
609
610
	if(!(mode&EX_OFFLINE)) {
		rio_abortable_save=rio_abortable;
		rio_abortable=false;
	}
611

612
    // Executing app in foreground?, monitor
613
    retval=STILL_ACTIVE;
614
    while(!(mode&EX_BG)) {
615
616
		if(mode&EX_CHKTIME)
			gettimeleft();
617
618
        if(!online && !(mode&EX_OFFLINE)) { // Tell VXD/VDD and external that user hung-up
        	if(was_online) {
619
620
				sprintf(str,"%s hung-up in external program",useron.alias);
				logline("X!",str);
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
            	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);
        }
644
645
		if((native && !use_pipes) || mode&EX_OFFLINE) {	
			/* Monitor for process termination only */
646
647
648
649
650
651
652
653
654
655
            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 {

656
			if(nt || use_pipes) {	// Windows NT/2000
657
658
659
660
661

				/* Write to VDD */

				wr=RingBufPeek(&inbuf,buf,sizeof(buf));
				if(wr) {
662
					if(!use_pipes && wrslot==INVALID_HANDLE_VALUE) {
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
						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
					}
679
					
680
681
682
683
684
					/* CR expansion */
					if(use_pipes) 
						bp=cr_expand(buf,wr,output_buf,wr);
					else
						bp=buf;
685

686
					if(wrslot!=INVALID_HANDLE_VALUE
687
						&& WriteFile(wrslot,bp,wr,&len,NULL)==TRUE) {
688
689
						RingBufRead(&inbuf, NULL, len);
						wr=len;
690
691
						if(use_pipes) {
							/* echo */
692
							RingBufWrite(&outbuf, bp, wr);
693
694
							sem_post(&output_sem);
						}
695
696
697
698
699
700
701
702
					} else		// VDD not loaded yet
						wr=0;
				}

				/* Read from VDD */

				len=sizeof(buf);
				avail=RingBufFree(&outbuf);
703
				if(avail==0) 
704
					lprintf("Node %d !output buffer full (%u bytes)"
705
						,cfg.node_num,RingBufFull(&outbuf));
706
707
				if(len>avail)
            		len=avail;
708
709
710
711
712
713
714
715
716
717
718
719
720
721
				rd=0;
				DWORD waiting=1;

				if(use_pipes)
					PeekNamedPipe(
						rdslot,             // handle to pipe to copy from
						NULL,               // pointer to data buffer
						0,					// size, in bytes, of data buffer
						NULL,				// pointer to number of bytes read
						&waiting,			// pointer to total number of bytes available
						NULL // pointer to unread bytes in this message
						);
 
				if(avail>=RingBufFull(&outbuf) && waiting 
722
					&& ReadFile(rdslot,buf,len,&rd,NULL)==TRUE && rd>0) {
723
724
725
726
727
					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 {
728
                		bp=telnet_expand(buf, rd, telnet_buf, rd);
729
730
731
732
						if(rd>sizeof(telnet_buf))
							errorlog("TELNET_BUF OVERRUN");
					}
					RingBufWrite(&outbuf, bp, rd);
733
					sem_post(&output_sem);
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
				}
			} 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);
763
				if(avail==0) 
764
					lprintf("Node %d !output buffer full (%u bytes)"
765
766
						,cfg.node_num,RingBufFull(&outbuf));

767
768
				if(len>avail)
            		len=avail;
769
				if(avail>=RingBufFull(&outbuf)) {
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
					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
791
                		bp=telnet_expand(buf, rd, telnet_buf, rd);
792
					RingBufWrite(&outbuf, bp, rd);
793
					sem_post(&output_sem);
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
				}
			}
            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;
					}
810
811
					

812
					if(!(loop_since_io%3000)) {
813
814
815
816
817
818
819
820
						OutputDebugString(".");

						// Let's make sure the socket is up
						// Sending will trigger a socket d/c detection
						sprintf(str,"%c%c",TELNET_IAC,TELNET_GA);
						putcom(str,2);

						// Check if the node has been interrupted
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
						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);
		}
	}

847
    if(!(mode&EX_BG)) {			/* !background execution */
848

849
850
		if(retval==STILL_ACTIVE)
			TerminateProcess(process_info.hProcess, GetLastError());
851

852
	 	// Get return value
853
854
855
856
857
858
859
860
    	sprintf(str,"%sDOSXTRN.RET", cfg.node_dir);
        FILE* fp=fopen(str,"r");
        if(fp!=NULL) {
			fscanf(fp,"%d",&retval);
			fclose(fp);
		}
	}

861
	XTRN_CLEANUP;
862
	CloseHandle(process_info.hProcess);
863
864
865

	if(!(mode&EX_OFFLINE)) {	/* !off-line execution */

866
867
868
		if(native) {
			ulong l=0;
			ioctlsocket(client_socket, FIONBIO, &l);
869
			pthread_mutex_unlock(&input_thread_mutex);
870
		}
871
872

		curatr=0;	// Can't guarantee current attributes
873

874
		rio_abortable=rio_abortable_save;	// Restore abortable state
875

876
877
878
879
880
		/* Got back to Text/NVT mode */
		sprintf(str,"%c%c%c",TELNET_IAC,TELNET_DONT,TELNET_BINARY);
		putcom(str,3);
		telnet_mode&=~TELNET_MODE_BIN_RX;
	}
881

882
883
//	lprintf("%s returned %d",realcmdline, retval);

884
885
	errorlevel = retval; // Baja-retrievable error value

886
887
888
	return(retval);
}

889
890
#else	/* !WIN32 */

891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
/*****************************************************************************/
// Expands Unix LF to CRLF
/*****************************************************************************/
BYTE* lf_expand(BYTE* inbuf, ulong inlen, BYTE* outbuf, ulong& newlen)
{
	ulong	i,j;

	for(i=j=0;i<inlen;i++) {
		if(inbuf[i]=='\n' && (!i || inbuf[i-1]!='\r'))
			outbuf[j++]='\r';
		outbuf[j++]=inbuf[i];
	}
	newlen=j;
    return(outbuf);
}

907
908
#define MAX_ARGS 1000

909
910
int sbbs_t::external(char* cmdline, long mode, char* startup_dir)
{
911
	char	str[256];
912
	char	fname[128];
913
	char*	argv[MAX_ARGS];
914
	char*	p;
915
916
917
	BYTE*	bp;
	BYTE	buf[XTRN_IO_BUF_LEN];
    BYTE 	output_buf[XTRN_IO_BUF_LEN*2];
918
	ulong	avail;
919
920
    ulong	output_len;
	bool	native=false;			// DOS program by default
rswindell's avatar
rswindell committed
921
	int		i;
922
923
	int		rd;
	int		wr;
924
	int		argc;
925
	pid_t	pid;
926
927
	int		in_pipe[2];
	int		out_pipe[2];
928
929
	fd_set ibits;
	struct timeval timeout;
930
931
932

	XTRN_LOADABLE_MODULE;
	XTRN_LOADABLE_JS_MODULE;
933

934
935
	attr(cfg.color[clr_external]);        /* setup default attributes */

936
    SAFECOPY(str,cmdline);		/* Set str to program name only */
937
938
    p=strchr(str,SP);
    if(p) *p=0;
939
    SAFECOPY(fname,str);
940
941
942
943
944
945
946
947
948
949
950
951
952
953

    p=strrchr(fname,'/');
    if(!p) p=strrchr(fname,'\\');
    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(!native) {
954
		bprintf("\r\nExternal DOS programs are not yet supported in\r\n%s\r\n",VERSION_NOTICE);
955
956
957
958
959
960
961
962
		return(-1);
	}

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

		// Current environment passed to child process
		sprintf(dszlog,"DSZLOG=%sPROTOCOL.LOG",cfg.node_dir);
		sprintf(sbbsnode,"SBBSNODE=%s",cfg.node_dir);
963
		sprintf(sbbsctrl,"SBBSCTRL=%s",cfg.ctrl_dir);
964
965
966
		sprintf(sbbsctrl,"SBBSDATA=%s",cfg.data_dir);
		sprintf(sbbsctrl,"SBBSEXEC=%s",cfg.exec_dir);
		sprintf(sbbsnnum,"SBBSNNUM=%d",cfg.node_num);
967
968
		putenv(dszlog); 		/* Makes the DSZ LOG active */
		putenv(sbbsnode);
969
970
971
972
		putenv(sbbsctrl);
		putenv(sbbsdata);
		putenv(sbbsexec);
		if(putenv(sbbsnnum))
973
        	errormsg(WHERE,ERR_WRITE,"environment",0);
974
975
976
977
978

	} else {
		/* setup DOSemu env here */
	}

979
980
	if(!(mode&EX_INR))
		pthread_mutex_lock(&input_thread_mutex);
981
982
983
984
985
986
987
988
989

	if((mode&EX_INR) && (mode&EX_OUTR))  {
		struct winsize winsize;
		winsize.ws_row=rows;
		// #warning Currently cols are forced to 80 apparently TODO
		winsize.ws_col=80;
		if((pid=forkpty(&in_pipe[1],NULL,NULL,&winsize))==-1) {
			pthread_mutex_unlock(&input_thread_mutex);
			errormsg(WHERE,ERR_EXEC,cmdline,0);
990
991
			return(-1);
		}
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
		out_pipe[0]=in_pipe[1];
	}
	else  {
		if(mode&EX_INR)
			if(pipe(in_pipe)!=0) {
				errormsg(WHERE,ERR_CREATE,"in_pipe",0);
				return(-1);
			}
		if(mode&EX_OUTR)
			if(pipe(out_pipe)!=0) {
				errormsg(WHERE,ERR_CREATE,"out_pipe",0);
				return(-1);
			}


		if((pid=fork())==-1) {
			pthread_mutex_unlock(&input_thread_mutex);
			errormsg(WHERE,ERR_EXEC,cmdline,0);
1010
1011
			return(-1);
		}
1012
1013
	}
	if(pid==0) {	/* child process */
1014
		setup_term(0, startup->xtrn_term);
1015
1016
		if(startup_dir!=NULL && startup_dir[0])
			chdir(startup_dir);
1017

1018
		if(mode&EX_SH || strcspn(cmdline,"<>|;")!=strlen(cmdline)) {
1019
1020
1021
1022
1023
1024
1025
			argv[0]=comspec;
			argv[1]="-c";
			argv[2]=cmdline;
			argv[3]=NULL;
		} else {
			argv[0]=cmdline;	/* point to the beginning of the string */
			argc=1;
1026
			for(i=0;cmdline[i] && argc<MAX_ARGS;i++)	/* Break up command line */
1027
1028
1029
1030
1031
1032
				if(cmdline[i]==SP) {
					cmdline[i]=0;			/* insert nulls */
					argv[argc++]=cmdline+i+1; /* point to the beginning of the next arg */
				}
			argv[argc]=NULL;
		}
1033

1034
		if(mode&EX_INR && !(mode&EX_OUTR))  {
1035
1036
1037
1038
			close(in_pipe[1]);		/* close write-end of pipe */
			dup2(in_pipe[0],0);		/* redirect stdin */
			close(in_pipe[0]);		/* close excess file descriptor */
		}
1039

1040
		if(mode&EX_OUTR && !(mode&EX_INR)) {
1041
1042
1043
1044
			close(out_pipe[0]);		/* close read-end of pipe */
			dup2(out_pipe[1],1);	/* stdout */
			dup2(out_pipe[1],2);	/* stderr */
			close(out_pipe[1]);		/* close excess file descriptor */
1045
1046
		}	

1047
1048
1049
1050
1051
		if(mode&EX_BG)	/* background execution, detach child */
		{
			if(fork())
				exit(0);
			lprintf("Detaching external process pgid=%d",setsid());
1052
1053
   	    }
	
1054
		execvp(argv[0],argv);
1055
1056
		sprintf(str,"!ERROR %d executing %s",errno,argv[0]);
		errorlog(str);
1057
		exit(-1);	/* should never get here */
1058
	}
1059

1060
1061
	lprintf("Node %d executing external: %s",cfg.node_num,cmdline);
	
1062
	if(mode&EX_OUTR) {
1063
1064
		if(!(mode&EX_INR))
			close(out_pipe[1]);	/* close write-end of pipe */
1065
		while(!terminated) {
1066
1067
			if(waitpid(pid, &i, WNOHANG)!=0)	/* child exited */
				break;
1068
1069
1070

			if(mode&EX_CHKTIME)
				gettimeleft();
1071
			
1072
1073
1074
1075
1076
1077
			if(!online && !(mode&EX_OFFLINE)) {
				sprintf(str,"%s hung-up in external program",useron.alias);
				logline("X!",str);
				break;
			}

1078
1079
1080
1081
1082
1083
1084
			/* Input */	
			if(mode&EX_INR && RingBufFull(&inbuf)) {
				if((wr=RingBufRead(&inbuf,buf,sizeof(buf)))!=0)
					write(in_pipe[1],buf,wr);
			}
				
			/* Output */
1085
#if 0
1086
1087
1088
1089
1090
			ioctl(out_pipe[0],FIONREAD,&rd);	/* peek at input */
			if(!rd) {
				mswait(1);
				continue;
			}
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
#else
			FD_ZERO(&ibits);
			FD_SET(out_pipe[0],&ibits);
			timeout.tv_sec=0;
			timeout.tv_usec=0;
			if(!select(out_pipe[0]+1,&ibits,NULL,NULL,&timeout))  {
				mswait(1);
				continue;
			}
#endif
1101
1102
1103

			avail=RingBufFree(&outbuf);
			if(avail==0) {
1104
				lprintf("Node %d !output buffer full (%u bytes)"
1105
						,cfg.node_num,RingBufFull(&outbuf));
1106
1107
1108
1109
				mswait(1);
				continue;
			}

1110
#if 0
1111
			if(rd>(int)avail)
1112
#endif
1113
				rd=avail;
1114

1115
			if(rd>(int)sizeof(buf))
1116
1117
1118
				rd=sizeof(buf);

			if((rd=read(out_pipe[0],buf,rd))<1) {
1119
1120
1121
				mswait(1);
				continue;
			}
1122
				
1123
			if(mode&EX_BIN)	/* telnet IAC expansion */
1124
   	       		bp=telnet_expand(buf, rd, output_buf, output_len);
1125
1126
1127
			else			/* LF to CRLF expansion */
				bp=lf_expand(buf, rd, output_buf, output_len);
			
1128
1129
			/* Does expanded size fit? */
			if(output_len>RingBufFree(&outbuf)) {
1130
				lprintf("Node %d !output buffer overflow (%u bytes)"
1131
1132
1133
1134
					,cfg.node_num,output_len);
				mswait(1);
				continue;
			}
1135
	
1136
1137
1138
			RingBufWrite(&outbuf, bp, output_len);
			sem_post(&output_sem);	
		}
1139

1140
1141
1142
		if(waitpid(pid, &i, WNOHANG)==0)  {		// Child still running? 
			kill(pid, SIGHUP);					// Tell child user has hung up
			time_t start=time(NULL);			// Wait up to 10 seconds
1143
			while(time(NULL)-start<10) {		// for child to terminate
1144
1145
1146
1147
1148
1149
1150
				if(waitpid(pid, &i, WNOHANG)!=0)
					break;
				mswait(500);
			}
			if(waitpid(pid, &i, WNOHANG)==0)	// Child still running?
				kill(pid, SIGKILL);				// terminate child process
		}
1151
1152
1153
1154
		/* close unneeded descriptors */
		if(mode&EX_INR)
			close(in_pipe[1]);
		close(out_pipe[0]);
1155
	}
1156

1157
	waitpid(pid, &i, 0); /* Wait for child to terminate */
1158
1159
1160
1161

	pthread_mutex_unlock(&input_thread_mutex);

	return(WEXITSTATUS(i));
1162
1163
1164
1165
}

#endif	/* !WIN32 */

1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
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);
1181
    for(i=j=0;i<len && j<(int)sizeof(cmdstr_output);i++) {
1182
1183
1184
        if(instr[i]=='%') {
            i++;
            cmd[j]=0;
1185
1186
1187
1188
			char ch=instr[i];
			if(isalpha(ch))
				ch=toupper(ch);
            switch(ch) {
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
                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 */
1211
1212
1213
#if defined(__unix__)
					strcat(cmd,ultoa(client_socket,str,10));
#else
1214
                    strcat(cmd,ultoa(client_socket_dup,str,10));
1215
#endif
1216
1217
                    break;
                case 'I':   /* UART IRQ Line */
1218
                    strcat(cmd,ultoa(cfg.com_irq,str,10));
1219
1220
1221
1222
1223
1224
1225
1226
                    break;
                case 'J':
                    strcat(cmd,cfg.data_dir);
                    break;
                case 'K':
                    strcat(cmd,cfg.ctrl_dir);
                    break;
                case 'L':   /* Lines per message */
1227
                    strcat(cmd,ultoa(cfg.level_linespermsg[useron.level],str,10));
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
                    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 */
1239
                    strcat(cmd,ultoa(online==ON_LOCAL ? 0:cfg.com_port,str,10));
1240
1241
1242
1243
1244
                    break;
                case 'Q':   /* QWK ID */
                    strcat(cmd,cfg.sys_id);
                    break;
                case 'R':   /* Rows */
1245
                    strcat(cmd,ultoa(rows,str,10));
1246
1247
1248
1249
1250
1251
                    break;
                case 'S':   /* File Spec */
                    strcat(cmd,fspec);
                    break;
                case 'T':   /* Time left in seconds */
                    gettimeleft();
1252
                    strcat(cmd,ultoa(timeleft,str,10));
1253
1254
                    break;
                case 'U':   /* UART I/O Address (in hex) */
1255
                    strcat(cmd,ultoa(cfg.com_base,str,16));
1256
1257
1258
1259
1260
1261
                    break;
                case 'V':   /* Synchronet Version */
                    sprintf(str,"%s%c",VERSION,REVISION);
                    break;
                case 'W':   /* Time-slice API type (mswtype) */
#if 0 //ndef __FLAT__
1262
                    strcat(cmd,ultoa(mswtyp,str,10));
1263
1264
1265
1266
1267
1268
#endif
                    break;
                case 'X':
                    strcat(cmd,cfg.shell[useron.shell]->code);
                    break;
                case '&':   /* Address of msr */
1269
                    sprintf(str,"%lu",(DWORD)&fakeriobp);
1270
1271
1272
                    strcat(cmd,str);
                    break;
                case 'Y':
1273
                    strcat(cmd,comspec);
1274
1275
1276
1277
                    break;
                case 'Z':
                    strcat(cmd,cfg.text_dir);
                    break;
1278
1279
				case '~':	/* DOS-compatible (8.3) filename */
#ifdef _WIN32
1280
					char sfpath[MAX_PATH+1];
1281
					SAFECOPY(sfpath,fpath);
1282
1283
1284
1285
1286
1287
					GetShortPathName(fpath,sfpath,sizeof(sfpath));
					strcat(cmd,sfpath);
#else
                    strcat(cmd,fpath);
#endif			
					break;
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
                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;
1305
1306
1307
1308
1309
				case '.':	/* .exe for DOS/OS2/Win32, blank for Unix */
#ifndef __unix__
					strcat(cmd,".exe");
#endif
					break;
1310
1311
1312
1313
				case '?':	/* Platform */
#ifdef __OS2__
					strcpy(str,"OS2");
#else