xtrn.cpp 51.3 KB
Newer Older
1
2
3
4
5
6
7
8
9
10
/* 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)		*
 *																			*
11
 * Copyright 2003 Rob Swindell - http://www.synchro.net/copyright.html		*
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
 *																			*
 * 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
#include <signal.h>			// kill()

44
45
46
#ifdef __unix__
	#include <sys/wait.h>	// WEXITSTATUS

47
48
	#define TTYDEFCHARS		// needed for ttydefchars definition

rswindell's avatar
rswindell committed
49
#if defined(__FreeBSD__)
50
	#include <libutil.h>	// forkpty()
rswindell's avatar
rswindell committed
51
52
53
#elif defined(__OpenBSD__)
	#include <util.h>
#elif defined(__linux__)
54
	#include <pty.h>
55
#elif defined(__QNX__)
56
#if 0
57
	#include <unix.h>
58
59
60
#else
	#define NEEDS_FORKPTY
#endif
61
#endif
62
63
64
65
66

	#ifdef NEEDS_FORKPTY
	#include <grp.h>
	#endif

67
	#include <termios.h>
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
#if defined(__QNX__)
	/*
	 * Control Character Defaults
	 */
	#define CTRL(x)	(x&037)
	#define	CEOF		CTRL('d')
	#define	CEOL		0xff		/* XXX avoid _POSIX_VDISABLE */
	#define	CERASE		0177
	#define	CERASE2		CTRL('h')
	#define	CINTR		CTRL('c')
	#define	CSTATUS		CTRL('t')
	#define	CKILL		CTRL('u')
	#define	CMIN		1
	#define	CQUIT		034		/* FS, ^\ */
	#define	CSUSP		CTRL('z')
	#define	CTIME		0
	#define	CDSUSP		CTRL('y')
	#define	CSTART		CTRL('q')
	#define	CSTOP		CTRL('s')
	#define	CLNEXT		CTRL('v')
	#define	CDISCARD 	CTRL('o')
	#define	CWERASE 	CTRL('w')
	#define	CREPRINT 	CTRL('r')
	#define	CEOT		CEOF
	/* compat */
	#define	CBRK		CEOL
	#define CRPRNT		CREPRINT
	#define	CFLUSH		CDISCARD
#endif

#if defined(__solaris__) || defined(__QNX__)
100
101
102
103
	#define TTYDEF_IFLAG    (BRKINT | ICRNL | IMAXBEL | IXON | IXANY)
	#define TTYDEF_OFLAG    (OPOST | ONLCR)
	#define TTYDEF_LFLAG    (ECHO | ICANON | ISIG | IEXTEN | ECHOE|ECHOKE|ECHOCTL)
	#define TTYDEF_CFLAG    (CREAD | CS8 | HUPCL)
104
105
106
107
108
	static cc_t     ttydefchars[NCCS] = {
        CEOF,   CEOL,   CEOL,   CERASE, CWERASE, CKILL, CREPRINT,
        CERASE2, CINTR, CQUIT,  CSUSP,  CDSUSP, CSTART, CSTOP,  CLNEXT,
        CDISCARD, CMIN, CTIME,  CSTATUS, _POSIX_VDISABLE
	};
109
110
#endif

111
112
#endif	/* __unix__ */

113
#define XTRN_IO_BUF_LEN 10000	/* 50% of IO_THREAD_BUF_SIZE */
114

115
116
117
118
119
120
121
122
123
124
/*****************************************************************************/
/* 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++) {
125
        if(buf[i]==CTRL_C) {	/* WWIV color escape char */
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
            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);
}
174
175

/*****************************************************************************/
176
// Escapes Telnet IAC (255) by doubling the IAC char
177
/*****************************************************************************/
178
BYTE* telnet_expand(BYTE* inbuf, ulong inlen, BYTE* outbuf, ulong& newlen)
179
180
181
182
183
184
{
	BYTE*   first_iac;
	ulong	i,outlen;

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

185
	if(first_iac==NULL) {	/* Nothing to expand */
186
187
188
189
		newlen=inlen;
		return(inbuf);
	}

190
191
	outlen=first_iac-inbuf;
	memcpy(outbuf, inbuf, outlen);
192
193
194

    for(i=outlen;i<inlen;i++) {
		if(inbuf[i]==TELNET_IAC)
195
			outbuf[outlen++]=TELNET_IAC;
196
197
198
199
200
		outbuf[outlen++]=inbuf[i];
	}
    newlen=outlen;
    return(outbuf);
}
201

202
203
#define XTRN_LOADABLE_MODULE								\
	if(cmdline[0]=='*') {   /* Baja module or JavaScript */	\
204
		SAFECOPY(str,cmdline+1);							\
205
206
		p=strchr(str,SP);									\
		if(p) {												\
207
			strcpy(main_csi.str,p+1);						\
208
209
210
211
212
213
214
215
216
217
218
219
220
221
			*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
222
223
224
225
226
227
228

#ifdef _WIN32

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

extern SOCKET node_socket[];

229
230
231
232
233
234
235
236
// -------------------------------------------------------------------------
// 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.
//
237
238
239
typedef HANDLE (WINAPI *OPENVXDHANDLE)(HANDLE);

OPENVXDHANDLE GetAddressOfOpenVxDHandle(void)
240
{
241
	return((OPENVXDHANDLE)GetProcAddress(hK32, "OpenVxDHandle"));
242
243
}

244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
/*****************************************************************************/
// 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);
}

260
261
262
263
264
265
266
267
268
269
270
/* 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)

271
272
273
/****************************************************************************/
/* Runs an external program 												*/
/****************************************************************************/
274
int sbbs_t::external(const char* cmdline, long mode, const char* startup_dir)
275
{
276
277
	char	str[MAX_PATH+1],*p;
	const char* p_startup_dir;
278
	char	path[MAX_PATH+1];
279
280
281
282
283
	char	fname[MAX_PATH+1];
    char	fullcmdline[MAX_PATH+1];
	char	realcmdline[MAX_PATH+1];
	char	comspec_str[MAX_PATH+1];
	char	title[MAX_PATH+1];
284
285
	BYTE	buf[XTRN_IO_BUF_LEN],*bp;
    BYTE 	telnet_buf[XTRN_IO_BUF_LEN*2];
286
    BYTE 	output_buf[XTRN_IO_BUF_LEN*2];
287
288
    BYTE 	wwiv_buf[XTRN_IO_BUF_LEN*2];
    bool	wwiv_flag=false;
289
    bool	native=false;			// DOS program by default
290
	bool	nt=false;				// WinNT/2K? 
291
    bool	was_online=true;
292
	bool	rio_abortable_save=rio_abortable;
293
	bool	use_pipes=false;	// NT-compatible console redirection
294
	BOOL	processTerminated=false;
295
	uint	i;
296
297
298
299
    time_t	hungup=0;
	HANDLE	vxd=INVALID_HANDLE_VALUE;
	HANDLE	rdslot=INVALID_HANDLE_VALUE;
	HANDLE	wrslot=INVALID_HANDLE_VALUE;
300
	HANDLE  start_event=NULL;
301
	HANDLE	hungup_event=NULL;
302
303
	HANDLE	rdoutpipe;
	HANDLE	wrinpipe;
304
305
	HANDLE	harray[3];
	DWORD	hcount;
306
307
308
309
310
311
    PROCESS_INFORMATION process_info;
	DWORD	hVM;
	DWORD	rd;
    DWORD	wr;
    DWORD	len;
    DWORD	avail;
312
313
	DWORD	dummy;
	DWORD	msglen;
314
315
316
	DWORD	retval;
	DWORD	last_error;
	DWORD	loop_since_io=0;
317
	struct	tm tm;
318
	sbbsexec_start_t start;
319
	OPENVXDHANDLE OpenVxDHandle;
320

321
322
323
	if(online==ON_LOCAL)
		eprintf("Executing external: %s",cmdline);

324
325
	XTRN_LOADABLE_MODULE;
	XTRN_LOADABLE_JS_MODULE;
326

327
	attr(cfg.color[clr_external]);		/* setup default attributes */
328

329
330
331
    SAFECOPY(str,cmdline);				/* Set str to program name only */
	truncstr(str," ");
    SAFECOPY(fname,getfname(str));
332
333

    for(i=0;i<cfg.total_natvpgms;i++)
334
        if(!stricmp(fname,cfg.natvpgm[i]->name))
335
336
337
338
            break;
    if(i<cfg.total_natvpgms || mode&EX_NATIVE)
        native=true;

rswindell's avatar
rswindell committed
339
	if(mode&EX_SH || strcspn(cmdline,"<>|")!=strlen(cmdline)) 
340
341
342
343
344
345
346
347
348
349
		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);

350
	SAFECOPY(realcmdline, fullcmdline);	// for errormsg if failed to execute
351
352

	now=time(NULL);
353
354
	if(localtime_r(&now,&tm)==NULL)
		memset(&tm,0,sizeof(tm));
355

356
357
358
359
360
	OpenVxDHandle=GetAddressOfOpenVxDHandle();

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

361
362
363
364
365
366
	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());
	}

367
368
369
	if(native && mode&EX_OUTR && !(mode&EX_OFFLINE))
		use_pipes=true;

370
 	if(native) { // Native (32-bit) external
371
372
373
374

		// Current environment passed to child process
		sprintf(dszlog,"DSZLOG=%sPROTOCOL.LOG",cfg.node_dir);
		sprintf(sbbsnode,"SBBSNODE=%s",cfg.node_dir);
375
		sprintf(sbbsctrl,"SBBSCTRL=%s",cfg.ctrl_dir);
376
377
378
		sprintf(sbbsdata,"SBBSDATA=%s",cfg.data_dir);
		sprintf(sbbsexec,"SBBSEXEC=%s",cfg.exec_dir);
		sprintf(sbbsnnum,"SBBSNNUM=%d",cfg.node_num);
379
380
		putenv(dszlog); 		/* Makes the DSZ LOG active */
		putenv(sbbsnode);
381
		putenv(sbbsctrl);
382
383
384
		putenv(sbbsdata);
		putenv(sbbsexec);
		putenv(sbbsnnum);
385
386
387
388
389
390
391
392
393
394
395
396
		/* date/time env vars */
		sprintf(env_day			,"DAY=%02u"			,tm.tm_mday);
		sprintf(env_weekday		,"WEEKDAY=%s"		,wday[tm.tm_wday]);
		sprintf(env_monthname	,"MONTHNAME=%s"		,mon[tm.tm_mon]);
		sprintf(env_month		,"MONTH=%02u"		,tm.tm_mon+1);
		sprintf(env_year		,"YEAR=%u"			,1900+tm.tm_year);
		putenv(env_day);
		putenv(env_weekday);
		putenv(env_monthname);
		putenv(env_month);
		if(putenv(env_year))
        	errormsg(WHERE,ERR_WRITE,"environment",0);
397
398
399

    } else { // DOS external

400
401
		sprintf(path,"%sDOSXTRN.RET", cfg.node_dir);
		remove(path);
402
403

    	// Create temporary environment file
404
405
    	sprintf(path,"%sDOSXTRN.ENV", cfg.node_dir);
        FILE* fp=fopen(path,"w");
406
        if(fp==NULL) {
407
			XTRN_CLEANUP;
408
        	errormsg(WHERE, ERR_CREATE, path, 0);
409
            return(errno);
410
411
412
413
        }
        fprintf(fp, "%s\n", fullcmdline);
		fprintf(fp, "DSZLOG=%sPROTOCOL.LOG\n", cfg.node_dir);
        fprintf(fp, "SBBSNODE=%s\n", cfg.node_dir);
414
415
416
        fprintf(fp, "SBBSCTRL=%s\n", cfg.ctrl_dir);
		fprintf(fp, "SBBSDATA=%s\n", cfg.data_dir);
		fprintf(fp, "SBBSEXEC=%s\n", cfg.exec_dir);
417
        fprintf(fp, "SBBSNNUM=%d\n", cfg.node_num);
418
419
420
421
422
423
		/* date/time env vars */
		fprintf(fp, "DAY=%02u\n", tm.tm_mday);
		fprintf(fp, "WEEKDAY=%s\n",wday[tm.tm_wday]);
		fprintf(fp, "MONTHNAME=%s\n",mon[tm.tm_mon]);
		fprintf(fp, "MONTH=%02u\n",tm.tm_mon+1);
		fprintf(fp, "YEAR=%u\n",1900+tm.tm_year);
424
425
        fclose(fp);

426
427
		SAFECOPY(str,path);	// incase GetShortPathName fails
		GetShortPathName(path,str,sizeof(str));
428
429
        sprintf(fullcmdline, "%sDOSXTRN.EXE %s", cfg.exec_dir, str);

430
		if(!(mode&EX_OFFLINE) && nt) {	// Windows NT/2000
431
432
433
434
435
			i=SBBSEXEC_MODE_FOSSIL;
			if(mode&EX_INR)
           		i|=SBBSEXEC_MODE_DOS_IN;
			if(mode&EX_OUTR)
        		i|=SBBSEXEC_MODE_DOS_OUT;
436
437
			sprintf(str," NT %u %u %u"
				,cfg.node_num,i,startup->xtrn_polls_before_yield);
438
439
440
441
442
443
444
445
446
			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) {
447
				XTRN_CLEANUP;
448
				errormsg(WHERE, ERR_CREATE, str, 0);
449
450
451
452
453
454
455
456
457
458
				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) {
459
				XTRN_CLEANUP;
460
461
462
463
464
465
466
467
468
469
470
471
				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) {
472
				XTRN_CLEANUP;
473
474
475
476
477
478
479
480
481
482
				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) {
483
				XTRN_CLEANUP;
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
				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;

499
500
			sprintf(str," 95 %u %u %u"
				,cfg.node_num,start.mode,startup->xtrn_polls_before_yield);
501
502
			strcat(fullcmdline,str);

503
504
505
506
507
508
509
510
511
512
			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
				)) {
513
				XTRN_CLEANUP;
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
				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;
	}
535
    if(startup->options&BBS_OPT_XTRN_MINIMIZED) {
536
537
538
    	startup_info.wShowWindow=SW_SHOWMINNOACTIVE;
        startup_info.dwFlags|=STARTF_USESHOWWINDOW;
    }
539
540
541
542
543
544
545
546
	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;

547
548
		// Create the child output pipe (override default 4K buffer size)
		if(!CreatePipe(&rdoutpipe,&startup_info.hStdOutput,&sa,sizeof(buf))) {
549
550
551
552
553
554
			errormsg(WHERE,ERR_CREATE,"stdout pipe",0);
			return(GetLastError());
		}
		startup_info.hStdError=startup_info.hStdOutput;

		// Create the child input pipe.
555
		if(!CreatePipe(&startup_info.hStdInput,&wrinpipe,&sa,sizeof(buf))) {
556
557
558
			errormsg(WHERE,ERR_CREATE,"stdin pipe",0);
			return(GetLastError());
		}
559

560
561
562
563
564
565
566
567
568
569
570
571
572
573
		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;
	}
574
	if(native && !(mode&EX_OFFLINE)) {
575
		/* temporary */
576
577
578
		FILE* fp;
		sprintf(fname,"%sDOOR32.SYS",cfg.node_dir);
		fp=fopen(fname,"wb");
579
		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"
580
			"%d\r\n%d\r\n"
581
582
			,mode&EX_OUTR ? 0 /* Local */ : 2 /* Telnet */
			,mode&EX_OUTR ? INVALID_SOCKET : client_socket_dup
583
			,VERSION_NOTICE,REVISION
584
585
586
587
588
589
590
591
			,useron.number
			,useron.name
			,useron.alias
			,useron.level
			,timeleft/60
			,useron.misc&ANSI ? 1 : 0
			,cfg.node_num);
		fclose(fp);
592
593

		/* not temporary */
594
		if(!(mode&EX_INR) && input_thread_running) {
595
			pthread_mutex_lock(&input_thread_mutex);
596
597
			input_thread_mutex_locked=true;
		}
598
599
600
601
602
603
604
	}

    if(!CreateProcess(
		NULL,			// pointer to name of executable module
		fullcmdline,  	// pointer to command line string
		NULL,  			// process security attributes
		NULL,   		// thread security attributes
605
		native && !(mode&EX_OFFLINE),	 			// handle inheritance flag
606
		CREATE_NEW_CONSOLE/*|CREATE_SEPARATE_WOW_VDM*/, // creation flags
607
608
609
610
611
        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
		)) {
612
		XTRN_CLEANUP;
613
		if(input_thread_mutex_locked && input_thread_running) {
614
615
616
			pthread_mutex_unlock(&input_thread_mutex);
			input_thread_mutex_locked=false;
		}
617
		SetLastError(last_error);	/* Restore LastError */
618
619
620
621
        errormsg(WHERE, ERR_EXEC, realcmdline, mode);
        return(GetLastError());
    }

622
623
624
625
626
627
628
629
630
631
632
#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

633
634
	CloseHandle(process_info.hThread);

635
636
637
638
639
	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) {
640
				XTRN_CLEANUP;
641
                TerminateProcess(process_info.hProcess, __LINE__);
642
				CloseHandle(process_info.hProcess);
643
644
645
646
647
				errormsg(WHERE, ERR_TIMEOUT, "start_event", retval);
				return(GetLastError());
			}

			CloseHandle(start_event);
648
			start_event=NULL;	/* Mark as closed */
649
650
651
652
653
654
655
656
657
658
659

			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
				)) {
660
				XTRN_CLEANUP;
661
                TerminateProcess(process_info.hProcess, __LINE__);
662
				CloseHandle(process_info.hProcess);
663
664
665
666
667
				errormsg(WHERE, ERR_IOCTL, SBBSEXEC_VXD, SBBSEXEC_IOCTL_COMPLETE);
				return(GetLastError());
			}
		}
	}
668
    ReleaseMutex(exec_mutex);
669

670
	/* Disable Ctrl-C checking */
671
	if(!(mode&EX_OFFLINE))
672
		rio_abortable=false;
673

674
    // Executing app in foreground?, monitor
675
    retval=STILL_ACTIVE;
676
    while(!(mode&EX_BG)) {
677
678
		if(mode&EX_CHKTIME)
			gettimeleft();
679
680
        if(!online && !(mode&EX_OFFLINE)) { // Tell VXD/VDD and external that user hung-up
        	if(was_online) {
681
682
				sprintf(str,"%s hung-up in external program",useron.alias);
				logline("X!",str);
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
            	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;
            }
703
704
705
706
            if(hungup && time(NULL)-hungup>5 && !processTerminated) {
				lprintf("Node %d Terminating process from line %d",cfg.node_num,__LINE__);
				processTerminated=TerminateProcess(process_info.hProcess, 2112);
			}
707
        }
708
709
		if((native && !use_pipes) || mode&EX_OFFLINE) {	
			/* Monitor for process termination only */
710
711
			if(WaitForSingleObject(process_info.hProcess,1000)==WAIT_OBJECT_0)
				break;
712
713
		} else {

714
			if(nt || use_pipes) {	// Windows NT/2000
715
716
717
718
719

				/* Write to VDD */

				wr=RingBufPeek(&inbuf,buf,sizeof(buf));
				if(wr) {
720
					if(!use_pipes && wrslot==INVALID_HANDLE_VALUE) {
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
						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
					}
737
					
738
739
740
741
742
					/* CR expansion */
					if(use_pipes) 
						bp=cr_expand(buf,wr,output_buf,wr);
					else
						bp=buf;
743

744
					if(wrslot!=INVALID_HANDLE_VALUE
745
						&& WriteFile(wrslot,bp,wr,&len,NULL)==TRUE) {
746
747
						RingBufRead(&inbuf, NULL, len);
						wr=len;
748
749
						if(use_pipes) {
							/* echo */
750
							RingBufWrite(&outbuf, bp, wr);
751
						}
752
753
754
755
756
757
					} else		// VDD not loaded yet
						wr=0;
				}

				/* Read from VDD */

758
				rd=0;
759
				len=sizeof(buf);
760
				avail=RingBufFree(&outbuf)/2;	// leave room for wwiv/telnet expansion
761
#if 0
762
				if(avail==0)
763
					lprintf("Node %d !output buffer full (%u bytes)"
764
						,cfg.node_num,RingBufFull(&outbuf));
765
#endif
766
767
				if(len>avail)
            		len=avail;
768

769
				while(rd<len) {
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
					DWORD waiting=0;

					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
							);
					else
						GetMailslotInfo(
							rdslot,				// mailslot handle 
 							NULL,				// address of maximum message size 
							NULL,				// address of size of next message 
							&waiting,			// address of number of messages 
 							NULL				// address of read time-out 
							);
					if(!waiting)
						break;
					if(ReadFile(rdslot,buf+rd,len-rd,&msglen,NULL)==FALSE || msglen<1)
						break;
					rd+=msglen;
				}

				if(rd) {
797
798
799
800
801
					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 {
802
                		bp=telnet_expand(buf, rd, telnet_buf, rd);
803
804
805
						if(rd>sizeof(telnet_buf))
							errorlog("TELNET_BUF OVERRUN");
					}
806
807
808
					if(rd>RingBufFree(&outbuf)) {
						errorlog("output buffer overflow");
						rd=RingBufFree(&outbuf);
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
					RingBufWrite(&outbuf, bp, rd);
				}
			} 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);
839
840
				avail=RingBufFree(&outbuf)/2;	// leave room for wwiv/telnet expansion
#if 0
841
				if(avail==0) 
842
					lprintf("Node %d !output buffer full (%u bytes)"
843
						,cfg.node_num,RingBufFull(&outbuf));
844
#endif
845

846
847
				if(len>avail)
            		len=avail;
848
				if(len) {
849
850
851
852
853
854
855
856
857
858
859
860
861
					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;
					}
862
					if(mode&EX_WWIV) {
863
                		bp=wwiv_expand(buf, rd, wwiv_buf, rd, useron.misc, wwiv_flag);
864
865
866
						if(rd>sizeof(wwiv_buf))
							errorlog("WWIV_BUF OVERRUN");
					} else {
867
                		bp=telnet_expand(buf, rd, telnet_buf, rd);
868
869
870
871
872
873
874
						if(rd>sizeof(telnet_buf))
							errorlog("TELNET_BUF OVERRUN");
					}
					if(rd>RingBufFree(&outbuf)) {
						errorlog("output buffer overflow");
						rd=RingBufFree(&outbuf);
					}
875
876
877
					RingBufWrite(&outbuf, bp, rd);
				}
			}
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
#ifdef _DEBUG
			if(rd>1) {
				sprintf(str,"Node %d read %5d bytes from xtrn", cfg.node_num, rd);
				OutputDebugString(str);
			}
#endif
            if((!rd && !wr) || hungup) {
				loop_since_io++;
				if((loop_since_io%300)==0) {
#ifdef _DEBUG
					sprintf(str,"Node %d xtrn idle\n",cfg.node_num);
					OutputDebugString(str);
#endif
					// Let's make sure the socket is up
					// Sending will trigger a socket d/c detection
					if(!(startup->options&BBS_OPT_NO_TELNET_GA))
						send_telnet_cmd(TELNET_GA,0);

					// Check if the node has been interrupted
					getnodedat(cfg.node_num,&thisnode,0);
					if(thisnode.misc&NODE_INTR)
899
900
						break;
				}
901
902
903
904
905
906
				hcount=0;
				harray[hcount++]=process_info.hProcess;
				if(!hungup)
					harray[hcount++]=inbuf.sem;
				if(WaitForMultipleObjects(hcount,harray,FALSE,100)==WAIT_OBJECT_0)
					break;
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
            } 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);
		}
	}

927
    if(!(mode&EX_BG)) {			/* !background execution */
928

929
930
931
        if(GetExitCodeProcess(process_info.hProcess, &retval)==FALSE)
            errormsg(WHERE, ERR_CHK, "ExitCodeProcess",(DWORD)process_info.hProcess);

932
933
		if(retval==STILL_ACTIVE) {
			lprintf("Node %d Terminating process from line %d",cfg.node_num,__LINE__);
934
			TerminateProcess(process_info.hProcess, GetLastError());
935
		}	
936

937
	 	// Get return value
938
939
940
941
942
943
944
		if(!native) {
    		sprintf(str,"%sDOSXTRN.RET", cfg.node_dir);
			FILE* fp=fopen(str,"r");
			if(fp!=NULL) {
				fscanf(fp,"%d",&retval);
				fclose(fp);
			}
945
946
947
		}
	}

948
	XTRN_CLEANUP;
949
	CloseHandle(process_info.hProcess);
950
951
952

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

953
954
955
		if(native) {
			ulong l=0;
			ioctlsocket(client_socket, FIONBIO, &l);
956
			if(input_thread_mutex_locked && input_thread_running) {
957
958
959
				pthread_mutex_unlock(&input_thread_mutex);
				input_thread_mutex_locked=false;
			}
960
		}
961

962
963
		curatr=~0;			// Can't guarantee current attributes
		attr(LIGHTGRAY);	// Force to "normal"
964

965
		rio_abortable=rio_abortable_save;	// Restore abortable state
966

967
		/* Got back to Text/NVT mode */
968
969
970
971
		if(telnet_mode&TELNET_MODE_BIN_RX) {
			send_telnet_cmd(TELNET_DONT,TELNET_BINARY);
			telnet_mode&=~TELNET_MODE_BIN_RX;
		}
972
	}
973

974
975
//	lprintf("%s returned %d",realcmdline, retval);

976
977
	errorlevel = retval; // Baja-retrievable error value

978
979
980
	return(retval);
}

981
982
#else	/* !WIN32 */

983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
/*****************************************************************************/
// 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);
}

999
1000
#define MAX_ARGS 1000

1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
#ifdef NEEDS_FORKPTY
static int login_tty(int fd)
{
	(void) setsid();
	if (!isatty(fd))
		return (-1);
	(void) dup2(fd, 0);
	(void) dup2(fd, 1);
	(void) dup2(fd, 2);
	if (fd > 2)
		(void) close(fd);
	return (0);
}

static int openpty(int *amaster, int *aslave, char *name, struct termios *termp, winsize *winp)
{
	char line[] = "/dev/ptyXX";
	const char *cp1, *cp2;
	int master, slave, ttygid;
	struct group *gr;

	if ((gr = getgrnam("tty")) != NULL)
		ttygid = gr->gr_gid;
	else
		ttygid = -1;

	for (cp1 = "pqrsPQRS"; *cp1; cp1++) {
		line[8] = *cp1;
		for (cp2 = "0123456789abcdefghijklmnopqrstuv"; *cp2; cp2++) {
			line[5] = 'p';
			line[9] = *cp2;
			if ((master = open(line, O_RDWR, 0)) == -1) {
				if (errno == ENOENT)
					break; /* try the next pty group */
			} else {
				line[5] = 't';
				(void) chown(line, getuid(), ttygid);
				(void) chmod(line, S_IRUSR|S_IWUSR|S_IWGRP);
				/* Hrm... SunOS doesn't seem to have revoke
				(void) revoke(line); */
				if ((slave = open(line, O_RDWR, 0)) != -1) {
					*amaster = master;
					*aslave = slave;
					if (name)
						strcpy(name, line);
					if (termp)
						(void) tcsetattr(slave,
							TCSAFLUSH, termp);
					if (winp)
						(void) ioctl(slave, TIOCSWINSZ,
							(char *)winp);
					return (0);
				}
				(void) close(master);
			}
		}
	}
	errno = ENOENT;	/* out of ptys */
	return (-1);
}

static int forkpty(int *amaster, char *name, termios *termp, winsize *winp)
{
	int master, slave, pid;

	if (openpty(&master, &slave, name, termp, winp) == -1)
		return (-1);
1068
	switch (pid = FORK()) {
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
	case -1:
		return (-1);
	case 0:
		/*
		 * child
		 */
		(void) close(master);
		login_tty(slave);
		return (0);
	}
	/*
	 * parent
	 */
	*amaster = master;
	(void) close(slave);
	return (pid);
}
#endif /* NEED_FORKPTY */

1088
int sbbs_t::external(const char* cmdline, long mode, const char* startup_dir)
1089
{
1090
1091
	char	str[MAX_PATH+1];
	char	fname[MAX_PATH+1];
1092
	char	fullpath[MAX_PATH+1];
1093
	char	fullcmdline[MAX_PATH+1];
1094
	char*	argv[MAX_ARGS];
1095
	char*	p;
1096
1097
1098
	BYTE*	bp;
	BYTE	buf[XTRN_IO_BUF_LEN];
    BYTE 	output_buf[XTRN_IO_BUF_LEN*2];
1099
	ulong	avail;
1100
1101
    ulong	output_len;
	bool	native=false;			// DOS program by default
1102
	bool	rio_abortable_save=rio_abortable;
rswindell's avatar
rswindell committed
1103
	int		i;
1104
1105
	int		rd;
	int		wr;
1106
	int		argc;
1107
	pid_t	pid;
1108
1109
	int		in_pipe[2];
	int		out_pipe[2];
1110
1111
	fd_set ibits;
	struct timeval timeout;
1112

1113
1114
1115
	if(online==ON_LOCAL)
		eprintf("Executing external: %s",cmdline);

1116
1117
	XTRN_LOADABLE_MODULE;
	XTRN_LOADABLE_JS_MODULE;
1118

1119
	attr(cfg.color[clr_external]);  /* setup default attributes */
1120

1121
1122
1123
    SAFECOPY(str,cmdline);			/* Set fname to program name only */
	truncstr(str," ");
    SAFECOPY(fname,getfname(str));
1124
1125

    for(i=0;i<cfg.total_natvpgms;i++)
1126
        if(!stricmp(fname,cfg.natvpgm[i]->name))
1127
1128
1129
1130
            break;
    if(i<cfg.total_natvpgms || mode&EX_NATIVE)
        native=true;

1131
1132
	sprintf(fullpath,"%s%s",startup_dir,fname);
	if(startup_dir!=NULL && cmdline[0]!='/' && cmdline[0]!='.' && fexist(fullpath))
1133
1134
1135
		sprintf(fullcmdline,"%s%s",startup_dir,cmdline);
	else
		SAFECOPY(fullcmdline,cmdline);
1136
1137
1138
1139

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

		// Current environment passed to child process
1140
1141
1142
1143
1144
1145
1146
1147
		sprintf(dszlog,"%sPROTOCOL.LOG",cfg.node_dir);
		setenv("DSZLOG",dszlog,1); 		/* Makes the DSZ LOG active */
		setenv("SBBSNODE",cfg.node_dir,1);
		setenv("SBBSCTRL",cfg.ctrl_dir,1);
		setenv("SBBSDATA",cfg.data_dir,1);
		setenv("SBBSEXEC",cfg.exec_dir,1);
		sprintf(sbbsnnum,"%u",cfg.node_num);
		if(setenv("SBBSNNUM",sbbsnnum,1))
1148
        	errormsg(WHERE,ERR_WRITE,"environment",0);
1149
1150

	} else {
1151
#if defined(__FreeBSD__)
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
		/* ToDo: This seems to work for every door except Iron Ox
		   ToDo: Iron Ox is unique in that it runs perfectly from
		   ToDo: tcsh but not at all from anywhere else, complaining
		   ToDo: about corrupt files.  I've ruled out the possibilty
		   ToDo: of it being a terminal mode issue... no other ideas
		   ToDo: come to mind. */

		FILE * doscmdrc;

		sprintf(str,"%s.doscmdrc",cfg.node_dir);
		if((doscmdrc=fopen(str,"w+"))==NULL)  {
			errormsg(WHERE,ERR_CREATE,str,0);
			return(-1);
		}
		if(startup_dir!=NULL && startup_dir[0])
			fprintf(doscmdrc,"assign C: %s\n",startup_dir);
		else
			fprintf(doscmdrc,"assign C: .\n");

		fprintf(doscmdrc,"assign D: %s\n",cfg.node_dir);
		SAFECOPY(str,cfg.exec_dir);
		if((p=strrchr(str,'/'))!=NULL)
			*p=0;
		if((p=strrchr(str,'/'))!=NULL)
			*p=0;
		fprintf(doscmdrc,"assign E: %s\n",str);
		
		/* setup doscmd env here */
		/* ToDo Note, this assumes that the BBS uses standard dir names */
		fprintf(doscmdrc,"DSZLOG=E:\\node%d\\PROTOCOL.LOG\n",cfg.node_num);
		fprintf(doscmdrc,"SBBSNODE=D:\\\n");
		fprintf(doscmdrc,"SBBSCTRL=E:\\ctrl\\\n");
		fprintf(doscmdrc,"SBBSDATA=E:\\data\\\n");
		fprintf(doscmdrc,"SBBSEXEC=E:\\exec\\\n");
		fprintf(doscmdrc,"SBBSNNUM=%d\n",cfg.node_num);

		fclose(doscmdrc);
1189
1190
1191
		SAFECOPY(str,fullcmdline);
		sprintf(fullcmdline,"%s -F %s",startup->dosemu_path,str);
#else
rswindell's avatar
rswindell committed
1192
		bprintf("\r\nExternal DOS programs are not yet supported in \r\n%s\r\n"
1193
1194
			,VERSION_NOTICE);
		return(-1);
1195
#endif
1196
1197
	}

1198
	if(!(mode&EX_INR) && input_thread_running)
1199
		pthread_mutex_lock(&input_thread_mutex);
1200
1201
1202

	if((mode&EX_INR) && (mode&EX_OUTR))  {
		struct winsize winsize;
1203
1204
		struct termios term;
		memset(&term,0,sizeof(term));
1205
1206
		cfsetispeed(&term,B19200);
		cfsetospeed(&term,B19200);
1207
1208
1209
1210
1211
1212
		if(mode&EX_BIN)
			cfmakeraw(&term);
		else {
			term.c_iflag = TTYDEF_IFLAG;
			term.c_oflag = TTYDEF_OFLAG;
			term.c_lflag = TTYDEF_LFLAG;
1213
			term.c_cflag = TTYDEF_CFLAG;
1214
			memcpy(term.c_cc,ttydefchars,sizeof(term.c_cc));
1215
		}
1216
1217
1218
		winsize.ws_row=rows;
		// #warning Currently cols are forced to 80 apparently TODO
		winsize.ws_col=80;
1219
		if((pid=forkpty(&in_pipe[1],NULL,&term,&winsize))==-1) {
1220
			pthread_mutex_unlock(&input_thread_mutex);
1221
			errormsg(WHERE,ERR_EXEC,fullcmdline,0);
1222
1223
			return(-1);
		}
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
		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);
			}


1239
		if((pid=FORK())==-1) {
1240
			pthread_mutex_unlock(&input_thread_mutex);
1241
			errormsg(WHERE,ERR_EXEC,fullcmdline,0);
1242
1243
			return(-1);
		}
1244
1245
	}
	if(pid==0) {	/* child process */
1246
1247
1248
		sigset_t        sigs;
		sigfillset(&sigs);
		sigprocmask(SIG_UNBLOCK,&sigs,NULL);
1249
1250
		if(!(mode&EX_BIN))  {
			static char	term_env[256];
1251
1252
1253
1254
			if(useron.misc&ANSI)
				sprintf(term_env,"TERM=%s",startup->xtrn_term_ansi);
			else
				sprintf(term_env,"TERM=%s",startup->xtrn_term_dumb);
1255
1256
			putenv(term_env);
		}
1257
1258
1259
1260
1261
#ifdef __FreeBSD__
		if(!native)
			chdir(cfg.node_dir);
		else
#endif
1262
1263
		if(startup_dir!=NULL && startup_dir[0])
			chdir(startup_dir);
1264

1265
		if(mode&EX_SH || strcspn(fullcmdline,"<>|;\"")!=strlen(fullcmdline)) {
1266
1267
			argv[0]=comspec;
			argv[1]="-c";
1268
			argv[2]=fullcmdline;
1269
1270
			argv[3]=NULL;
		} else {
1271
			argv[0]=fullcmdline;	/* point to the beginning of the string */
1272
			argc=1;
1273
1274
1275
1276
			for(i=0;fullcmdline[i] && argc<MAX_ARGS;i++)	/* Break up command line */
				if(fullcmdline[i]==SP) {
					fullcmdline[i]=0;			/* insert nulls */
					argv[argc++]=fullcmdline+i+1; /* point to the beginning of the next arg */
1277
1278
1279
				}
			argv[argc]=NULL;
		}
1280

1281
		if(mode&EX_INR && !(mode&EX_OUTR))  {
1282
1283
1284
1285
			close(in_pipe[1]);		/* close write-end of pipe */
			dup2(in_pipe[0],0);		/* redirect stdin */
			close(in_pipe[0]);		/* close excess file descriptor */
		}
1286

1287
		if(mode&EX_OUTR && !(mode&EX_INR)) {