xtrn.cpp 64.8 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 2006 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()
deuce's avatar
deuce committed
51
#elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__DARWIN__)
rswindell's avatar
rswindell committed
52
53
	#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

deuce's avatar
deuce committed
69
70
71
72
/*
 * Control Character Defaults
 */
#ifndef CTRL
73
	#define CTRL(x)	(x&037)
deuce's avatar
deuce committed
74
75
#endif
#ifndef CEOF
76
	#define	CEOF		CTRL('d')
deuce's avatar
deuce committed
77
78
#endif
#ifndef CEOL
79
	#define	CEOL		0xff		/* XXX avoid _POSIX_VDISABLE */
deuce's avatar
deuce committed
80
81
#endif
#ifndef CERASE
82
	#define	CERASE		0177
deuce's avatar
deuce committed
83
84
#endif
#ifndef CERASE2
85
	#define	CERASE2		CTRL('h')
deuce's avatar
deuce committed
86
87
#endif
#ifndef CINTR
88
	#define	CINTR		CTRL('c')
deuce's avatar
deuce committed
89
90
#endif
#ifndef CSTATUS
91
	#define	CSTATUS		CTRL('t')
deuce's avatar
deuce committed
92
93
#endif
#ifndef CKILL
94
	#define	CKILL		CTRL('u')
deuce's avatar
deuce committed
95
96
#endif
#ifndef CMIN
97
	#define	CMIN		1
deuce's avatar
deuce committed
98
99
#endif
#ifndef CQUIT
100
	#define	CQUIT		034		/* FS, ^\ */
deuce's avatar
deuce committed
101
102
#endif
#ifndef CSUSP
103
	#define	CSUSP		CTRL('z')
deuce's avatar
deuce committed
104
105
#endif
#ifndef CTIME
106
	#define	CTIME		0
deuce's avatar
deuce committed
107
108
#endif
#ifndef CDSUSP
109
	#define	CDSUSP		CTRL('y')
deuce's avatar
deuce committed
110
111
#endif
#ifndef CSTART
112
	#define	CSTART		CTRL('q')
deuce's avatar
deuce committed
113
114
#endif
#ifndef CSTOP
115
	#define	CSTOP		CTRL('s')
deuce's avatar
deuce committed
116
117
#endif
#ifndef CLNEXT
118
	#define	CLNEXT		CTRL('v')
deuce's avatar
deuce committed
119
120
#endif
#ifndef CDISCARD
121
	#define	CDISCARD 	CTRL('o')
deuce's avatar
deuce committed
122
123
#endif
#ifndef CWERASE
124
	#define	CWERASE 	CTRL('w')
deuce's avatar
deuce committed
125
126
#endif
#ifndef CREPRINT
127
	#define	CREPRINT 	CTRL('r')
deuce's avatar
deuce committed
128
129
#endif
#ifndef CEOT
130
	#define	CEOT		CEOF
deuce's avatar
deuce committed
131
132
133
#endif
/* compat */
#ifndef CBRK
134
	#define	CBRK		CEOL
deuce's avatar
deuce committed
135
136
#endif
#ifndef CRPRNT
137
	#define CRPRNT		CREPRINT
deuce's avatar
deuce committed
138
139
#endif
#ifndef CFLUSH
140
141
142
	#define	CFLUSH		CDISCARD
#endif

deuce's avatar
deuce committed
143
#ifndef TTYDEF_IFLAG
144
	#define TTYDEF_IFLAG    (BRKINT | ICRNL | IMAXBEL | IXON | IXANY)
deuce's avatar
deuce committed
145
146
#endif
#ifndef TTYDEF_OFLAG
147
	#define TTYDEF_OFLAG    (OPOST | ONLCR)
deuce's avatar
deuce committed
148
149
#endif
#ifndef TTYDEF_LFLAG
150
	#define TTYDEF_LFLAG    (ECHO | ICANON | ISIG | IEXTEN | ECHOE|ECHOKE|ECHOCTL)
deuce's avatar
deuce committed
151
152
#endif
#ifndef TTYDEF_CFLAG
153
	#define TTYDEF_CFLAG    (CREAD | CS8 | HUPCL)
deuce's avatar
deuce committed
154
#endif
deuce's avatar
deuce committed
155
#if defined(__QNX__) || defined(__solaris__) || defined(__NetBSD__)
156
157
158
	static cc_t     ttydefchars[NCCS] = {
        CEOF,   CEOL,   CEOL,   CERASE, CWERASE, CKILL, CREPRINT,
        CERASE2, CINTR, CQUIT,  CSUSP,  CDSUSP, CSTART, CSTOP,  CLNEXT,
deuce's avatar
deuce committed
159
160
161
162
        CDISCARD, CMIN, CTIME,  CSTATUS
#ifndef __solaris__
	, _POSIX_VDISABLE
#endif
163
	};
164
165
#endif

166
167
#endif	/* __unix__ */

168
#define XTRN_IO_BUF_LEN 10000	/* 50% of IO_THREAD_BUF_SIZE */
169

170
171
172
173
174
175
176
177
178
179
/*****************************************************************************/
/* 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++) {
180
        if(buf[i]==CTRL_C) {	/* WWIV color escape char */
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
            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);
}
229
230

/*****************************************************************************/
231
// Escapes Telnet IAC (255) by doubling the IAC char
232
/*****************************************************************************/
233
BYTE* telnet_expand(BYTE* inbuf, ulong inlen, BYTE* outbuf, ulong& newlen)
234
235
236
237
238
239
{
	BYTE*   first_iac;
	ulong	i,outlen;

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

240
	if(first_iac==NULL) {	/* Nothing to expand */
241
242
243
244
		newlen=inlen;
		return(inbuf);
	}

245
246
	outlen=first_iac-inbuf;
	memcpy(outbuf, inbuf, outlen);
247
248
249

    for(i=outlen;i<inlen;i++) {
		if(inbuf[i]==TELNET_IAC)
250
			outbuf[outlen++]=TELNET_IAC;
251
252
253
254
255
		outbuf[outlen++]=inbuf[i];
	}
    newlen=outlen;
    return(outbuf);
}
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
static bool native_executable(scfg_t* cfg, const char* cmdline, long mode)
{
	char*	p;
	char	str[MAX_PATH+1];
	char	name[64];
	char	base[64];
	unsigned i;

	if(mode&EX_NATIVE)
		return(TRUE);

    SAFECOPY(str,cmdline);				/* Set str to program name only */
	truncstr(str," ");
    SAFECOPY(name,getfname(str));
	SAFECOPY(base,name);
	if((p=getfext(base))!=NULL)
		*p=0;

    for(i=0;i<cfg->total_natvpgms;i++)
        if(stricmp(name,cfg->natvpgm[i]->name)==0
		|| stricmp(base,cfg->natvpgm[i]->name)==0)
            break;
    return(i<cfg->total_natvpgms);
}

282
283
#define XTRN_LOADABLE_MODULE								\
	if(cmdline[0]=='*') {   /* Baja module or JavaScript */	\
284
		SAFECOPY(str,cmdline+1);							\
285
		p=strchr(str,' ');									\
286
		if(p) {												\
287
			strcpy(main_csi.str,p+1);						\
288
289
290
291
292
293
294
295
296
297
298
299
			*p=0; 											\
		} else												\
			main_csi.str[0]=0;								\
		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
300
301
302
303
304
305
306

#ifdef _WIN32

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

extern SOCKET node_socket[];

307
308
309
310
311
312
313
314
// -------------------------------------------------------------------------
// 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.
//
315
316
317
typedef HANDLE (WINAPI *OPENVXDHANDLE)(HANDLE);

OPENVXDHANDLE GetAddressOfOpenVxDHandle(void)
318
{
319
	return((OPENVXDHANDLE)GetProcAddress(hK32, "OpenVxDHandle"));
320
321
}

322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
/*****************************************************************************/
// 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);
}

338
339
340
341
342
343
344
345
static void add_env_var(str_list_t* list, const char* var, const char* val)
{
	char	str[MAX_PATH*2];
	SetEnvironmentVariable(var,NULL);	/* Delete in current process env */
	SAFEPRINTF2(str,"%s=%s",var,val);
	strListPush(list,str);
}

346
347
348
349
350
351
352
353
354
355
356
/* 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)

357
358
359
/****************************************************************************/
/* Runs an external program 												*/
/****************************************************************************/
360
int sbbs_t::external(const char* cmdline, long mode, const char* startup_dir)
361
{
362
363
364
365
	char	str[MAX_PATH+1];
	char*	p;
	char*	env_block=NULL;
	char*	env_strings;
366
	const char* p_startup_dir;
367
	char	path[MAX_PATH+1];
368
369
370
371
    char	fullcmdline[MAX_PATH+1];
	char	realcmdline[MAX_PATH+1];
	char	comspec_str[MAX_PATH+1];
	char	title[MAX_PATH+1];
372
373
	BYTE	buf[XTRN_IO_BUF_LEN],*bp;
    BYTE 	telnet_buf[XTRN_IO_BUF_LEN*2];
374
    BYTE 	output_buf[XTRN_IO_BUF_LEN*2];
375
376
    BYTE 	wwiv_buf[XTRN_IO_BUF_LEN*2];
    bool	wwiv_flag=false;
377
    bool	native=false;			// DOS program by default
378
	bool	nt=false;				// WinNT/2K? 
379
    bool	was_online=true;
380
	bool	rio_abortable_save=rio_abortable;
381
	bool	use_pipes=false;	// NT-compatible console redirection
382
	BOOL	success;
383
	BOOL	processTerminated=false;
384
	uint	i;
385
386
387
388
    time_t	hungup=0;
	HANDLE	vxd=INVALID_HANDLE_VALUE;
	HANDLE	rdslot=INVALID_HANDLE_VALUE;
	HANDLE	wrslot=INVALID_HANDLE_VALUE;
389
	HANDLE  start_event=NULL;
390
	HANDLE	hungup_event=NULL;
391
392
	HANDLE	rdoutpipe;
	HANDLE	wrinpipe;
393
394
395
396
397
398
    PROCESS_INFORMATION process_info;
	DWORD	hVM;
	DWORD	rd;
    DWORD	wr;
    DWORD	len;
    DWORD	avail;
399
400
	DWORD	dummy;
	DWORD	msglen;
401
402
403
	DWORD	retval;
	DWORD	last_error;
	DWORD	loop_since_io=0;
404
	struct	tm tm;
405
	str_list_t	env_list;
406
	sbbsexec_start_t start;
407
	OPENVXDHANDLE OpenVxDHandle;
408

409
	if(online==ON_LOCAL)
410
		eprintf(LOG_INFO,"Executing external: %s",cmdline);
411
412
	else
		lprintf(LOG_INFO,"Node %d Executing external: %s",cfg.node_num,cmdline);
413

414
415
	XTRN_LOADABLE_MODULE;
	XTRN_LOADABLE_JS_MODULE;
416

417
	attr(cfg.color[clr_external]);		/* setup default attributes */
418

419
	native = native_executable(&cfg, cmdline, mode);
420

rswindell's avatar
rswindell committed
421
	if(mode&EX_SH || strcspn(cmdline,"<>|")!=strlen(cmdline)) 
422
423
424
425
426
427
428
429
430
431
		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);

432
	SAFECOPY(realcmdline, fullcmdline);	// for errormsg if failed to execute
433
434

	now=time(NULL);
435
436
	if(localtime_r(&now,&tm)==NULL)
		memset(&tm,0,sizeof(tm));
437

438
439
440
441
442
	OpenVxDHandle=GetAddressOfOpenVxDHandle();

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

443
444
445
446
447
448
	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());
	}

449
450
451
	if(native && mode&EX_OUTR && !(mode&EX_OFFLINE))
		use_pipes=true;

452
 	if(native) { // Native (32-bit) external
453

454
455
456
457
458
459
		if((env_list=strListInit())==NULL) {
			XTRN_CLEANUP;
        	errormsg(WHERE, ERR_CREATE, "env_list", 0);
            return(errno);
		}

460
		// Current environment passed to child process
461
462
463
464
465
466
467
468
		sprintf(str,"%sprotocol.log",cfg.node_dir);			
		add_env_var(&env_list,"DSZLOG",str);
		add_env_var(&env_list,"SBBSNODE",cfg.node_dir);
		add_env_var(&env_list,"SBBSCTRL",cfg.ctrl_dir);
		add_env_var(&env_list,"SBBSDATA",cfg.data_dir);
		add_env_var(&env_list,"SBBSEXEC",cfg.exec_dir);
		sprintf(str,"%d",cfg.node_num);
		add_env_var(&env_list,"SBBSNNUM",str);
469
		/* date/time env vars */
470
471
472
473
474
475
476
477
		sprintf(str,"%02u",tm.tm_mday);	
		add_env_var(&env_list,"DAY",str);
		add_env_var(&env_list,"WEEKDAY",wday[tm.tm_wday]);
		add_env_var(&env_list,"MONTHNAME",mon[tm.tm_mon]);
		sprintf(str,"%02u",tm.tm_mon+1);
		add_env_var(&env_list,"MONTH",str);
		sprintf(str,"%u",1900+tm.tm_year);
		add_env_var(&env_list,"YEAR",str);
478
479
480
481
482
483
484
485
486
487
488
489

		env_strings=GetEnvironmentStrings();
		env_block=strListCopyBlock(env_strings);
		if(env_strings!=NULL)
			FreeEnvironmentStrings(env_strings);
		env_block=strListAppendBlock(env_block,env_list);
		strListFree(&env_list);
		if(env_block==NULL) {
			XTRN_CLEANUP;
        	errormsg(WHERE, ERR_CREATE, "env_block", 0);
            return(errno);
		}
490
491
492

    } else { // DOS external

493
494
		sprintf(path,"%sDOSXTRN.RET", cfg.node_dir);
		remove(path);
495
496

    	// Create temporary environment file
497
498
    	sprintf(path,"%sDOSXTRN.ENV", cfg.node_dir);
        FILE* fp=fopen(path,"w");
499
        if(fp==NULL) {
500
			XTRN_CLEANUP;
501
        	errormsg(WHERE, ERR_CREATE, path, 0);
502
            return(errno);
503
504
505
506
        }
        fprintf(fp, "%s\n", fullcmdline);
		fprintf(fp, "DSZLOG=%sPROTOCOL.LOG\n", cfg.node_dir);
        fprintf(fp, "SBBSNODE=%s\n", cfg.node_dir);
507
508
509
        fprintf(fp, "SBBSCTRL=%s\n", cfg.ctrl_dir);
		fprintf(fp, "SBBSDATA=%s\n", cfg.data_dir);
		fprintf(fp, "SBBSEXEC=%s\n", cfg.exec_dir);
510
        fprintf(fp, "SBBSNNUM=%d\n", cfg.node_num);
511
512
513
514
515
516
		/* 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);
517
518
        fclose(fp);

519
520
		SAFECOPY(str,path);	// incase GetShortPathName fails
		GetShortPathName(path,str,sizeof(str));
521
522
        sprintf(fullcmdline, "%sDOSXTRN.EXE %s", cfg.exec_dir, str);

523
		if(!(mode&EX_OFFLINE) && nt) {	// Windows NT/2000
524
525
526
527
528
			i=SBBSEXEC_MODE_FOSSIL;
			if(mode&EX_INR)
           		i|=SBBSEXEC_MODE_DOS_IN;
			if(mode&EX_OUTR)
        		i|=SBBSEXEC_MODE_DOS_OUT;
529
530
			sprintf(str," NT %u %u"
				,cfg.node_num,i);
531
532
533
534
535
536
537
538
539
			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) {
540
				XTRN_CLEANUP;
541
				errormsg(WHERE, ERR_CREATE, str, 0);
542
543
544
545
546
547
				return(GetLastError());
			}

			sprintf(str,"\\\\.\\mailslot\\sbbsexec\\rd%d"
				,cfg.node_num);
			rdslot=CreateMailslot(str
548
				,sizeof(buf)/2			// Maximum message size (0=unlimited)
549
550
551
				,0						// Read time-out
				,NULL);                 // Security
			if(rdslot==INVALID_HANDLE_VALUE) {
552
				XTRN_CLEANUP;
553
554
555
556
557
558
559
560
561
562
563
564
				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) {
565
				XTRN_CLEANUP;
566
567
568
569
570
571
572
573
574
575
				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) {
576
				XTRN_CLEANUP;
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
				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;

592
593
			sprintf(str," 95 %u %u"
				,cfg.node_num,start.mode);
594
595
			strcat(fullcmdline,str);

596
597
598
599
600
601
602
603
604
605
			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
				)) {
606
				XTRN_CLEANUP;
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
				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;
	}
628
    if(startup->options&BBS_OPT_XTRN_MINIMIZED) {
629
630
631
    	startup_info.wShowWindow=SW_SHOWMINNOACTIVE;
        startup_info.dwFlags|=STARTF_USESHOWWINDOW;
    }
632
633
634
635
636
637
638
639
	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;

640
641
		// Create the child output pipe (override default 4K buffer size)
		if(!CreatePipe(&rdoutpipe,&startup_info.hStdOutput,&sa,sizeof(buf))) {
642
643
644
645
646
647
			errormsg(WHERE,ERR_CREATE,"stdout pipe",0);
			return(GetLastError());
		}
		startup_info.hStdError=startup_info.hStdOutput;

		// Create the child input pipe.
648
		if(!CreatePipe(&startup_info.hStdInput,&wrinpipe,&sa,sizeof(buf))) {
649
650
651
			errormsg(WHERE,ERR_CREATE,"stdin pipe",0);
			return(GetLastError());
		}
652

653
654
655
656
657
658
659
660
661
662
663
664
665
666
		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;
	}
667
	if(native && !(mode&EX_OFFLINE)) {
668

669
		if(!(mode&EX_INR) && input_thread_running) {
670
			pthread_mutex_lock(&input_thread_mutex);
671
672
			input_thread_mutex_locked=true;
		}
673
674
675
676
677
678

		if(!(mode&EX_OUTR)) {	 /* Native Socket I/O program */
			/* Enable the Nagle algorithm */
			BOOL nodelay=FALSE;
			setsockopt(client_socket,IPPROTO_TCP,TCP_NODELAY,(char*)&nodelay,sizeof(nodelay));
		}
679
680
	}

681
    success=CreateProcess(
682
683
684
685
		NULL,			// pointer to name of executable module
		fullcmdline,  	// pointer to command line string
		NULL,  			// process security attributes
		NULL,   		// thread security attributes
686
		native && !(mode&EX_OFFLINE),	 			// handle inheritance flag
687
		CREATE_NEW_CONSOLE/*|CREATE_SEPARATE_WOW_VDM*/, // creation flags
688
        env_block, 		// pointer to new environment block
689
690
691
		p_startup_dir,	// pointer to current directory name
		&startup_info,  // pointer to STARTUPINFO
		&process_info  	// pointer to PROCESS_INFORMATION
692
693
694
695
696
		);

	strListFreeBlock(env_block);

	if(!success) {
697
		XTRN_CLEANUP;
698
		if(input_thread_mutex_locked && input_thread_running) {
699
700
701
			pthread_mutex_unlock(&input_thread_mutex);
			input_thread_mutex_locked=false;
		}
702
		SetLastError(last_error);	/* Restore LastError */
703
704
705
706
        errormsg(WHERE, ERR_EXEC, realcmdline, mode);
        return(GetLastError());
    }

707
708
709
710
711
712
713
714
715
716
717
#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

718
719
	CloseHandle(process_info.hThread);

720
721
722
723
724
	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) {
725
				XTRN_CLEANUP;
726
                TerminateProcess(process_info.hProcess, __LINE__);
727
				CloseHandle(process_info.hProcess);
728
729
730
731
732
				errormsg(WHERE, ERR_TIMEOUT, "start_event", retval);
				return(GetLastError());
			}

			CloseHandle(start_event);
733
			start_event=NULL;	/* Mark as closed */
734
735
736
737
738
739
740
741
742
743
744

			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
				)) {
745
				XTRN_CLEANUP;
746
                TerminateProcess(process_info.hProcess, __LINE__);
747
				CloseHandle(process_info.hProcess);
748
749
750
751
752
				errormsg(WHERE, ERR_IOCTL, SBBSEXEC_VXD, SBBSEXEC_IOCTL_COMPLETE);
				return(GetLastError());
			}
		}
	}
753
    ReleaseMutex(exec_mutex);
754

755
	/* Disable Ctrl-C checking */
756
	if(!(mode&EX_OFFLINE))
757
		rio_abortable=false;
758

759
    // Executing app in foreground?, monitor
760
    retval=STILL_ACTIVE;
761
    while(!(mode&EX_BG)) {
762
763
		if(mode&EX_CHKTIME)
			gettimeleft();
764
765
        if(!online && !(mode&EX_OFFLINE)) { // Tell VXD/VDD and external that user hung-up
        	if(was_online) {
766
767
				sprintf(str,"%s hung-up in external program",useron.alias);
				logline("X!",str);
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
            	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;
            }
788
            if(hungup && time(NULL)-hungup>5 && !processTerminated) {
789
				lprintf(LOG_INFO,"Node %d Terminating process from line %d",cfg.node_num,__LINE__);
790
791
				processTerminated=TerminateProcess(process_info.hProcess, 2112);
			}
792
        }
793
794
		if((native && !use_pipes) || mode&EX_OFFLINE) {	
			/* Monitor for process termination only */
795
796
			if(WaitForSingleObject(process_info.hProcess,1000)==WAIT_OBJECT_0)
				break;
797
798
		} else {

799
			if(nt || use_pipes) {	// Windows NT/2000
800
801
802
803
804

				/* Write to VDD */

				wr=RingBufPeek(&inbuf,buf,sizeof(buf));
				if(wr) {
805
					if(!use_pipes && wrslot==INVALID_HANDLE_VALUE) {
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
						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
					}
822
					
823
824
825
826
827
					/* CR expansion */
					if(use_pipes) 
						bp=cr_expand(buf,wr,output_buf,wr);
					else
						bp=buf;
828

829
					if(wrslot!=INVALID_HANDLE_VALUE
830
						&& WriteFile(wrslot,bp,wr,&len,NULL)==TRUE) {
831
832
						RingBufRead(&inbuf, NULL, len);
						wr=len;
833
						if(use_pipes && !(mode&EX_NOECHO)) {
834
							/* echo */
835
							RingBufWrite(&outbuf, bp, wr);
836
						}
837
838
839
840
841
842
					} else		// VDD not loaded yet
						wr=0;
				}

				/* Read from VDD */

843
				rd=0;
844
				len=sizeof(buf);
845
				avail=RingBufFree(&outbuf)/2;	// leave room for wwiv/telnet expansion
846
#if 0
847
				if(avail==0)
848
					lprintf("Node %d !output buffer full (%u bytes)"
849
						,cfg.node_num,RingBufFull(&outbuf));
850
#endif
851
852
				if(len>avail)
            		len=avail;
853

854
				while(rd<len) {
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
					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) {
882
883
884
885
					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");
886
887
					} else if(telnet_mode&TELNET_MODE_OFF) {
						bp=buf;
888
					} else {
889
                		bp=telnet_expand(buf, rd, telnet_buf, rd);
890
891
892
						if(rd>sizeof(telnet_buf))
							errorlog("TELNET_BUF OVERRUN");
					}
893
894
895
					if(rd>RingBufFree(&outbuf)) {
						errorlog("output buffer overflow");
						rd=RingBufFree(&outbuf);
896
					}
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
					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);
926
927
				avail=RingBufFree(&outbuf)/2;	// leave room for wwiv/telnet expansion
#if 0
928
				if(avail==0) 
929
					lprintf("Node %d !output buffer full (%u bytes)"
930
						,cfg.node_num,RingBufFull(&outbuf));
931
#endif
932

933
934
				if(len>avail)
            		len=avail;
935
				if(len) {
936
937
938
939
940
941
942
943
944
945
946
947
948
					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;
					}
949
					if(mode&EX_WWIV) {
950
                		bp=wwiv_expand(buf, rd, wwiv_buf, rd, useron.misc, wwiv_flag);
951
952
						if(rd>sizeof(wwiv_buf))
							errorlog("WWIV_BUF OVERRUN");
953
954
					} else if(telnet_mode&TELNET_MODE_OFF) {
						bp=buf;
955
					} else {
956
                		bp=telnet_expand(buf, rd, telnet_buf, rd);
957
958
959
960
961
962
963
						if(rd>sizeof(telnet_buf))
							errorlog("TELNET_BUF OVERRUN");
					}
					if(rd>RingBufFree(&outbuf)) {
						errorlog("output buffer overflow");
						rd=RingBufFree(&outbuf);
					}
964
965
966
					RingBufWrite(&outbuf, bp, rd);
				}
			}
967
#if defined(_DEBUG) && 0
968
969
970
971
972
973
			if(rd>1) {
				sprintf(str,"Node %d read %5d bytes from xtrn", cfg.node_num, rd);
				OutputDebugString(str);
			}
#endif
            if((!rd && !wr) || hungup) {
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991

				loop_since_io++;	/* number of loop iterations with no I/O */

				/* only check process termination after 300 milliseconds of no I/O */
				/* to allow for last minute reception of output from DOS programs */
				if(loop_since_io>=3
					&& WaitForSingleObject(process_info.hProcess,0)==WAIT_OBJECT_0)
					break;	/* Process Terminated */

				/* only check node for interrupt flag every 3 seconds of no I/O */
				if((loop_since_io%30)==0) {	
					// Check if the node has been interrupted
					getnodedat(cfg.node_num,&thisnode,0);
					if(thisnode.misc&NODE_INTR)
						break;
				}

				/* only send telnet GA every 30 seconds of no I/O */
992
				if((loop_since_io%300)==0) {
993
#if defined(_DEBUG)
994
995
996
997
998
999
1000
					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);
1001
				}
1002
				sem_trywait_block(&inbuf.sem,100);
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
            } 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);
		}
	}

1023
    if(!(mode&EX_BG)) {			/* !background execution */
1024

1025
1026
1027
        if(GetExitCodeProcess(process_info.hProcess, &retval)==FALSE)
            errormsg(WHERE, ERR_CHK, "ExitCodeProcess",(DWORD)process_info.hProcess);

1028
		if(retval==STILL_ACTIVE) {
1029
			lprintf(LOG_INFO,"Node %d Terminating process from line %d",cfg.node_num,__LINE__);
1030
			TerminateProcess(process_info.hProcess, GetLastError());
1031
		}	
1032

1033
	 	// Get return value
1034
1035
1036
1037
1038
1039
1040
		if(!native) {
    		sprintf(str,"%sDOSXTRN.RET", cfg.node_dir);
			FILE* fp=fopen(str,"r");
			if(fp!=NULL) {
				fscanf(fp,"%d",&retval);
				fclose(fp);
			}
1041
1042
1043
		}
	}

1044
	XTRN_CLEANUP;
1045
	CloseHandle(process_info.hProcess);
1046
1047
1048

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

1049
		if(native) {
1050
1051
			
			/* Re-enable blocking (incase disabled by xtrn program) */
1052
1053
			ulong l=0;
			ioctlsocket(client_socket, FIONBIO, &l);
1054
1055

			/* Re-set socket options */
1056
			if(set_socket_options(&cfg, client_socket, client.protocol, str, sizeof(str)))
1057
1058
				lprintf(LOG_ERR,"%04d !ERROR %s",client_socket, str);

1059
			if(input_thread_mutex_locked && input_thread_running) {
1060
1061
1062
				pthread_mutex_unlock(&input_thread_mutex);
				input_thread_mutex_locked=false;
			}
1063
		}
1064

1065
1066
		curatr=~0;			// Can't guarantee current attributes
		attr(LIGHTGRAY);	// Force to "normal"
1067

1068
		rio_abortable=rio_abortable_save;	// Restore abortable state
1069

1070
		/* Got back to Text/NVT mode */
1071
		request_telnet_opt(TELNET_DONT,TELNET_BINARY_TX);
1072
	}
1073

1074
1075
//	lprintf("%s returned %d",realcmdline, retval);

1076
	errorlevel = retval; // Baja or JS retrievable error value
1077

1078
1079
1080
	return(retval);
}

1081
1082
#else	/* !WIN32 */

1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
/*****************************************************************************/
// 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);
}

1099
1100
#define MAX_ARGS 1000

deuce's avatar
deuce committed
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
#ifdef NEEDS_SETENV
static int setenv(const char *name, const char *value, int overwrite)
{
	char *envstr;
	char *oldenv;
	if(overwrite || getenv(name)==NULL) {
		envstr=(char *)malloc(strlen(name)+strlen(value)+2);
		if(envstr==NULL) {
			errno=ENOMEM;
			return(-1);
		}
deuce's avatar
deuce committed
1112
1113
		/* Note, on some platforms, this can be free()d... */
		sprintf(envstr,"%s=%s",name,value);
deuce's avatar
deuce committed
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
		putenv(envstr);
	}
	return(0);
}
#endif

#ifdef NEEDS_CFMAKERAW
void
cfmakeraw(struct termios *t)
{
	t->c_iflag &= ~(IMAXBEL|IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
	t->c_oflag &= ~OPOST;
	t->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
	t->c_cflag &= ~(CSIZE|PARENB);
	t->c_cflag |= CS8;
}
#endif

1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
#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);
}

1146
1147
1148
1149
1150
1151
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
#ifdef NEEDS_DAEMON
/****************************************************************************/
/* Daemonizes the process                                                   */
/****************************************************************************/
int
daemon(int nochdir, int noclose)
{
    int fd;

    switch (fork()) {
    case -1:
        return (-1);
    case 0:
        break;
    default:
        _exit(0);
    }

    if (setsid() == -1)
        return (-1);

    if (!nochdir)
        (void)chdir("/");

    if (!noclose && (fd = open(_PATH_DEVNULL, O_RDWR, 0)) != -1) {
        (void)dup2(fd, STDIN_FILENO);
        (void)dup2(fd, STDOUT_FILENO);
        (void)dup2(fd, STDERR_FILENO);
        if (fd > 2)
            (void)close(fd);
    }
    return (0);
}
#endif

1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
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);
1234
	switch (pid = FORK()) {
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
	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 */

1254
int sbbs_t::external(const char* cmdline, long mode, const char* startup_dir)
1255
{
1256
1257
	char	str[MAX_PATH+1];
	char	fname[MAX_PATH+1];
1258
	char	fullpath[MAX_PATH+1];
1259
	char	fullcmdline[MAX_PATH+1];
1260
	char*	argv[MAX_ARGS];
1261
	char*	p;
1262
1263
1264
	BYTE*	bp;
	B