xtrn.cpp 68.4 KB
Newer Older
1
/* xtrn.cpp */
rswindell's avatar
rswindell committed
2
// vi: tabstop=4
3
4
5
6
7
8
9
10
11

/* 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)		*
 *																			*
rswindell's avatar
rswindell committed
12
 * Copyright Rob Swindell - http://www.synchro.net/copyright.html			*
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
 *																			*
 * 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.	*
 ****************************************************************************/
rswindell's avatar
rswindell committed
38
#define XTERN_LOG_STDERR
39
40
41
42
#include "sbbs.h"
#include "cmdshell.h"
#include "telnet.h"

43
44
#include <signal.h>			// kill()

45
46
47
#ifdef __unix__
	#include <sys/wait.h>	// WEXITSTATUS

deuce's avatar
deuce committed
48
49
	#define TTYDEFCHARS		// needed for ttydefchars definition
	#include <sys/ttydefaults.h>	// Linux - it's motherfucked.
rswindell's avatar
rswindell committed
50
#if defined(__FreeBSD__)
51
	#include <libutil.h>	// forkpty()
deuce's avatar
deuce committed
52
#elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__DARWIN__)
rswindell's avatar
rswindell committed
53
54
	#include <util.h>
#elif defined(__linux__)
55
	#include <pty.h>
56
#elif defined(__QNX__)
57
#if 0
58
	#include <unix.h>
59
60
61
#else
	#define NEEDS_FORKPTY
#endif
62
#endif
63
64
65
66
67

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

68
	#include <termios.h>
69

deuce's avatar
deuce committed
70
71
72
73
/*
 * Control Character Defaults
 */
#ifndef CTRL
74
	#define CTRL(x)	(x&037)
deuce's avatar
deuce committed
75
76
#endif
#ifndef CEOF
77
	#define	CEOF		CTRL('d')
deuce's avatar
deuce committed
78
79
#endif
#ifndef CEOL
80
	#define	CEOL		0xff		/* XXX avoid _POSIX_VDISABLE */
deuce's avatar
deuce committed
81
82
#endif
#ifndef CERASE
83
	#define	CERASE		0177
deuce's avatar
deuce committed
84
85
#endif
#ifndef CERASE2
86
	#define	CERASE2		CTRL('h')
deuce's avatar
deuce committed
87
88
#endif
#ifndef CINTR
89
	#define	CINTR		CTRL('c')
deuce's avatar
deuce committed
90
91
#endif
#ifndef CSTATUS
92
	#define	CSTATUS		CTRL('t')
deuce's avatar
deuce committed
93
94
#endif
#ifndef CKILL
95
	#define	CKILL		CTRL('u')
deuce's avatar
deuce committed
96
97
#endif
#ifndef CMIN
98
	#define	CMIN		1
deuce's avatar
deuce committed
99
100
#endif
#ifndef CQUIT
101
	#define	CQUIT		034		/* FS, ^\ */
deuce's avatar
deuce committed
102
103
#endif
#ifndef CSUSP
104
	#define	CSUSP		CTRL('z')
deuce's avatar
deuce committed
105
106
#endif
#ifndef CTIME
107
	#define	CTIME		0
deuce's avatar
deuce committed
108
109
#endif
#ifndef CDSUSP
110
	#define	CDSUSP		CTRL('y')
deuce's avatar
deuce committed
111
112
#endif
#ifndef CSTART
113
	#define	CSTART		CTRL('q')
deuce's avatar
deuce committed
114
115
#endif
#ifndef CSTOP
116
	#define	CSTOP		CTRL('s')
deuce's avatar
deuce committed
117
118
#endif
#ifndef CLNEXT
119
	#define	CLNEXT		CTRL('v')
deuce's avatar
deuce committed
120
121
#endif
#ifndef CDISCARD
122
	#define	CDISCARD 	CTRL('o')
deuce's avatar
deuce committed
123
124
#endif
#ifndef CWERASE
125
	#define	CWERASE 	CTRL('w')
deuce's avatar
deuce committed
126
127
#endif
#ifndef CREPRINT
128
	#define	CREPRINT 	CTRL('r')
deuce's avatar
deuce committed
129
130
#endif
#ifndef CEOT
131
	#define	CEOT		CEOF
deuce's avatar
deuce committed
132
133
134
#endif
/* compat */
#ifndef CBRK
135
	#define	CBRK		CEOL
deuce's avatar
deuce committed
136
137
#endif
#ifndef CRPRNT
138
	#define CRPRNT		CREPRINT
deuce's avatar
deuce committed
139
140
#endif
#ifndef CFLUSH
141
142
143
	#define	CFLUSH		CDISCARD
#endif

deuce's avatar
deuce committed
144
#ifndef TTYDEF_IFLAG
145
	#define TTYDEF_IFLAG    (BRKINT | ICRNL | IMAXBEL | IXON | IXANY)
deuce's avatar
deuce committed
146
147
#endif
#ifndef TTYDEF_OFLAG
148
	#define TTYDEF_OFLAG    (OPOST | ONLCR)
deuce's avatar
deuce committed
149
150
#endif
#ifndef TTYDEF_LFLAG
151
	#define TTYDEF_LFLAG    (ECHO | ICANON | ISIG | IEXTEN | ECHOE|ECHOKE|ECHOCTL)
deuce's avatar
deuce committed
152
153
#endif
#ifndef TTYDEF_CFLAG
154
	#define TTYDEF_CFLAG    (CREAD | CS8 | HUPCL)
deuce's avatar
deuce committed
155
#endif
deuce's avatar
deuce committed
156
#if defined(__QNX__) || defined(__solaris__) || defined(__NetBSD__)
157
158
159
	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
160
161
162
163
        CDISCARD, CMIN, CTIME,  CSTATUS
#ifndef __solaris__
	, _POSIX_VDISABLE
#endif
164
	};
165
166
#endif

167
168
#endif	/* __unix__ */

169
#define XTRN_IO_BUF_LEN 10000	/* 50% of IO_THREAD_BUF_SIZE */
170

171
172
173
174
175
176
177
178
179
180
/*****************************************************************************/
/* 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++) {
181
        if(buf[i]==CTRL_C) {	/* WWIV color escape char */
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
229
            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);
}
230
231

/*****************************************************************************/
232
// Escapes Telnet IAC (255) by doubling the IAC char
233
/*****************************************************************************/
234
BYTE* telnet_expand(BYTE* inbuf, ulong inlen, BYTE* outbuf, ulong& newlen)
235
236
237
238
239
240
{
	BYTE*   first_iac;
	ulong	i,outlen;

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

241
	if(first_iac==NULL) {	/* Nothing to expand */
242
243
244
245
		newlen=inlen;
		return(inbuf);
	}

246
247
	outlen=first_iac-inbuf;
	memcpy(outbuf, inbuf, outlen);
248
249
250

    for(i=outlen;i<inlen;i++) {
		if(inbuf[i]==TELNET_IAC)
251
			outbuf[outlen++]=TELNET_IAC;
252
253
254
255
256
		outbuf[outlen++]=inbuf[i];
	}
    newlen=outlen;
    return(outbuf);
}
257

258
259
260
261
262
263
264
static void petscii_convert(BYTE* buf, ulong len)
{
    for(ulong i=0; i<len; i++) {
		buf[i] = cp437_to_petscii(buf[i]);
	}
}

265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
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);
}

290
#define XTRN_LOADABLE_MODULE(cmdline,startup_dir)			\
291
	if(cmdline[0]=='*')		/* Baja module or JavaScript */	\
292
		return(exec_bin(cmdline+1,&main_csi,startup_dir))				
293
#ifdef JAVASCRIPT
294
	#define XTRN_LOADABLE_JS_MODULE(cmdline,startup_dir)	\
295
	if(cmdline[0]=='?') 	/* JavaScript */				\
296
		return(js_execfile(cmdline+1,startup_dir))						
297
298
299
#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
/* 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);	\
354
	if(hangup_event!=NULL)				CloseHandle(hangup_event);	\
355
356
357
	ReleaseMutex(exec_mutex);										\
	SetLastError(last_error)

358
359
360
/****************************************************************************/
/* Runs an external program 												*/
/****************************************************************************/
361
int sbbs_t::external(const char* cmdline, long mode, const char* startup_dir)
362
{
363
364
365
	char	str[MAX_PATH+1];
	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
	HANDLE	hangup_event=NULL;
392
393
	HANDLE	rdoutpipe;
	HANDLE	wrinpipe;
394
395
    PROCESS_INFORMATION process_info;
	DWORD	hVM;
deuce's avatar
deuce committed
396
	unsigned long	rd;
397
    unsigned long	wr;
deuce's avatar
deuce committed
398
    unsigned long	len;
399
    DWORD	avail;
deuce's avatar
deuce committed
400
401
402
	unsigned long	dummy;
	unsigned long	msglen;
	unsigned long	retval;
403
404
	DWORD	last_error;
	DWORD	loop_since_io=0;
405
	struct	tm tm;
406
	str_list_t	env_list;
407
	sbbsexec_start_t start;
408
	OPENVXDHANDLE OpenVxDHandle;
409

410
	lprintf(LOG_DEBUG,"Executing external: %s",cmdline);
411

412
413
414
415
416
	if(startup_dir!=NULL && startup_dir[0] && !isdir(startup_dir)) {
		errormsg(WHERE, ERR_CHK, startup_dir, 0);
		return -1;
	}

417
418
	XTRN_LOADABLE_MODULE(cmdline,startup_dir);
	XTRN_LOADABLE_JS_MODULE(cmdline,startup_dir);
419

420
	attr(cfg.color[clr_external]);		/* setup default attributes */
421

422
	native = native_executable(&cfg, cmdline, mode);
423

424
425
426
427
428
	if(!native && (startup->options&BBS_OPT_NO_DOS)) {
		bprintf("Sorry, DOS programs are not supported on this node.\r\n");
		return -1;
	}

rswindell's avatar
rswindell committed
429
	if(mode&EX_SH || strcspn(cmdline,"<>|")!=strlen(cmdline)) 
430
431
432
433
434
435
436
437
438
439
		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);

440
	SAFECOPY(realcmdline, fullcmdline);	// for errormsg if failed to execute
441
442

	now=time(NULL);
443
444
	if(localtime_r(&now,&tm)==NULL)
		memset(&tm,0,sizeof(tm));
445

446
447
448
449
450
	OpenVxDHandle=GetAddressOfOpenVxDHandle();

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

451
452
453
454
455
456
	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());
	}

457
	if(native && mode&EX_STDOUT && !(mode&EX_OFFLINE))
458
459
		use_pipes=true;

460
 	if(native) { // Native (32-bit) external
461

462
463
464
465
466
467
		if((env_list=strListInit())==NULL) {
			XTRN_CLEANUP;
        	errormsg(WHERE, ERR_CREATE, "env_list", 0);
            return(errno);
		}

468
		// Current environment passed to child process
469
470
471
472
473
474
475
476
		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);
477
		/* date/time env vars */
478
479
480
481
482
483
484
485
		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);
486
487
488
489
490
491
492
493
494
495
496
497

		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);
		}
498
499
500

    } else { // DOS external

501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
		// DOS-compatible (short) paths
		char node_dir[MAX_PATH+1];
		char ctrl_dir[MAX_PATH+1];
		char data_dir[MAX_PATH+1];
		char exec_dir[MAX_PATH+1];

		// in case GetShortPathName fails
		SAFECOPY(node_dir,cfg.node_dir);
		SAFECOPY(ctrl_dir,cfg.ctrl_dir);
		SAFECOPY(data_dir,cfg.data_dir);
		SAFECOPY(exec_dir,cfg.exec_dir);

		GetShortPathName(cfg.node_dir,node_dir,sizeof(node_dir));
		GetShortPathName(cfg.ctrl_dir,ctrl_dir,sizeof(node_dir));
		GetShortPathName(cfg.data_dir,data_dir,sizeof(data_dir));
		GetShortPathName(cfg.exec_dir,exec_dir,sizeof(exec_dir));

518
519
		sprintf(path,"%sDOSXTRN.RET", cfg.node_dir);
		remove(path);
520
521

    	// Create temporary environment file
522
    	sprintf(path,"%sDOSXTRN.ENV", node_dir);
523
        FILE* fp=fopen(path,"w");
524
        if(fp==NULL) {
525
			XTRN_CLEANUP;
526
        	errormsg(WHERE, ERR_CREATE, path, 0);
527
            return(errno);
528
529
        }
        fprintf(fp, "%s\n", fullcmdline);
530
531
532
533
534
		fprintf(fp, "DSZLOG=%sPROTOCOL.LOG\n", node_dir);
        fprintf(fp, "SBBSNODE=%s\n", node_dir);
        fprintf(fp, "SBBSCTRL=%s\n", ctrl_dir);
		fprintf(fp, "SBBSDATA=%s\n", data_dir);
		fprintf(fp, "SBBSEXEC=%s\n", exec_dir);
535
        fprintf(fp, "SBBSNNUM=%d\n", cfg.node_num);
536
		fprintf(fp, "PCBNODE=%d\n", cfg.node_num);
537
538
539
540
541
542
		/* 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);
543
544
        fclose(fp);

545
        sprintf(fullcmdline, "%sDOSXTRN.EXE %s", cfg.exec_dir, path);
546

547
		if(!(mode&EX_OFFLINE) && nt) {	// Windows NT/2000
548
			i=SBBSEXEC_MODE_FOSSIL;
549
			if(mode&EX_STDIN)
550
           		i|=SBBSEXEC_MODE_DOS_IN;
551
			if(mode&EX_STDOUT)
552
        		i|=SBBSEXEC_MODE_DOS_OUT;
553
554
			sprintf(str," NT %u %u"
				,cfg.node_num,i);
555
556
557
558
559
560
561
562
563
			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) {
564
				XTRN_CLEANUP;
565
				errormsg(WHERE, ERR_CREATE, str, 0);
566
567
568
				return(GetLastError());
			}

569
570
571
572
573
574
575
576
577
578
579
580
			sprintf(str,"sbbsexec_hangup%d",cfg.node_num);
			if((hangup_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) {
				XTRN_CLEANUP;
				errormsg(WHERE, ERR_CREATE, str, 0);
				return(GetLastError());
			}

581
582
583
			sprintf(str,"\\\\.\\mailslot\\sbbsexec\\rd%d"
				,cfg.node_num);
			rdslot=CreateMailslot(str
584
				,sizeof(buf)/2			// Maximum message size (0=unlimited)
585
586
587
				,0						// Read time-out
				,NULL);                 // Security
			if(rdslot==INVALID_HANDLE_VALUE) {
588
				XTRN_CLEANUP;
589
590
591
592
593
594
595
596
597
598
599
600
				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) {
601
				XTRN_CLEANUP;
602
603
604
605
606
607
608
609
610
611
				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) {
612
				XTRN_CLEANUP;
613
614
615
616
617
618
619
620
621
622
				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;
623
			if(mode&EX_STDIN)
624
           		start.mode|=SBBSEXEC_MODE_DOS_IN;
625
			if(mode&EX_STDOUT)
626
627
        		start.mode|=SBBSEXEC_MODE_DOS_OUT;

628
629
			sprintf(str," 95 %u %u"
				,cfg.node_num,start.mode);
630
631
			strcat(fullcmdline,str);

632
633
634
635
636
637
638
639
640
641
			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
				)) {
642
				XTRN_CLEANUP;
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
				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;
	}
664
    if(startup->options&BBS_OPT_XTRN_MINIMIZED) {
665
666
667
    	startup_info.wShowWindow=SW_SHOWMINNOACTIVE;
        startup_info.dwFlags|=STARTF_USESHOWWINDOW;
    }
668
669
670
671
672
673
674
675
	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;

676
677
		// Create the child output pipe (override default 4K buffer size)
		if(!CreatePipe(&rdoutpipe,&startup_info.hStdOutput,&sa,sizeof(buf))) {
678
679
680
681
682
683
			errormsg(WHERE,ERR_CREATE,"stdout pipe",0);
			return(GetLastError());
		}
		startup_info.hStdError=startup_info.hStdOutput;

		// Create the child input pipe.
684
		if(!CreatePipe(&startup_info.hStdInput,&wrinpipe,&sa,sizeof(buf))) {
685
686
687
			errormsg(WHERE,ERR_CREATE,"stdin pipe",0);
			return(GetLastError());
		}
688

689
690
691
692
693
694
695
696
697
698
699
700
701
702
		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;
	}
703
	if(native && !(mode&EX_OFFLINE)) {
704

705
		if(!(mode&EX_STDIN) && input_thread_running) {
706
			pthread_mutex_lock(&input_thread_mutex);
707
708
			input_thread_mutex_locked=true;
		}
709

710
		if(!(mode&EX_STDOUT)) {	 /* Native Socket I/O program */
711
712
713
714
			/* Enable the Nagle algorithm */
			BOOL nodelay=FALSE;
			setsockopt(client_socket,IPPROTO_TCP,TCP_NODELAY,(char*)&nodelay,sizeof(nodelay));
		}
715
716
	}

717
    success=CreateProcess(
718
719
720
721
		NULL,			// pointer to name of executable module
		fullcmdline,  	// pointer to command line string
		NULL,  			// process security attributes
		NULL,   		// thread security attributes
722
		native && !(mode&EX_OFFLINE),	 			// handle inheritance flag
723
		CREATE_NEW_CONSOLE/*|CREATE_SEPARATE_WOW_VDM*/, // creation flags
724
        env_block, 		// pointer to new environment block
725
726
727
		p_startup_dir,	// pointer to current directory name
		&startup_info,  // pointer to STARTUPINFO
		&process_info  	// pointer to PROCESS_INFORMATION
728
729
730
731
732
		);

	strListFreeBlock(env_block);

	if(!success) {
733
		XTRN_CLEANUP;
734
		if(input_thread_mutex_locked && input_thread_running) {
735
736
737
			pthread_mutex_unlock(&input_thread_mutex);
			input_thread_mutex_locked=false;
		}
738
		SetLastError(last_error);	/* Restore LastError */
739
740
741
742
        errormsg(WHERE, ERR_EXEC, realcmdline, mode);
        return(GetLastError());
    }

743
744
745
746
747
748
749
750
751
752
753
#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

754
755
	CloseHandle(process_info.hThread);

756
757
758
759
760
	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) {
761
				XTRN_CLEANUP;
762
                TerminateProcess(process_info.hProcess, __LINE__);
763
				CloseHandle(process_info.hProcess);
764
765
766
767
768
				errormsg(WHERE, ERR_TIMEOUT, "start_event", retval);
				return(GetLastError());
			}

			CloseHandle(start_event);
769
			start_event=NULL;	/* Mark as closed */
770
771
772
773
774
775
776
777
778
779
780

			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
				)) {
781
				XTRN_CLEANUP;
782
                TerminateProcess(process_info.hProcess, __LINE__);
783
				CloseHandle(process_info.hProcess);
784
785
786
787
788
				errormsg(WHERE, ERR_IOCTL, SBBSEXEC_VXD, SBBSEXEC_IOCTL_COMPLETE);
				return(GetLastError());
			}
		}
	}
789
    ReleaseMutex(exec_mutex);
790

791
	/* Disable Ctrl-C checking */
792
	if(!(mode&EX_OFFLINE))
793
		rio_abortable=false;
794

795
    // Executing app in foreground?, monitor
796
    retval=STILL_ACTIVE;
797
    while(!(mode&EX_BG)) {
798
799
		if(mode&EX_CHKTIME)
			gettimeleft();
800
801
        if(!online && !(mode&EX_OFFLINE)) { // Tell VXD/VDD and external that user hung-up
        	if(was_online) {
802
				logline(LOG_NOTICE,"X!","hung-up in external program");
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
            	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;
            }
823
            if(hungup && time(NULL)-hungup>5 && !processTerminated) {
824
				lprintf(LOG_INFO,"Terminating process from line %d", __LINE__);
825
826
				processTerminated=TerminateProcess(process_info.hProcess, 2112);
			}
827
        }
828
829
		if((native && !use_pipes) || mode&EX_OFFLINE) {	
			/* Monitor for process termination only */
830
831
			if(WaitForSingleObject(process_info.hProcess,1000)==WAIT_OBJECT_0)
				break;
832
833
		} else {

834
			if(nt || use_pipes) {	// Windows NT/2000
835
836
837
838
839

				/* Write to VDD */

				wr=RingBufPeek(&inbuf,buf,sizeof(buf));
				if(wr) {
840
					if(!use_pipes && wrslot==INVALID_HANDLE_VALUE) {
841
842
843
844
845
846
847
848
849
						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);
850
						if(wrslot==INVALID_HANDLE_VALUE)
rswindell's avatar
rswindell committed
851
							lprintf(LOG_DEBUG,"!ERROR %u (%s) opening %s", GetLastError(), strerror(errno), str);
852
						else
853
							lprintf(LOG_DEBUG,"CreateFile(%s)=0x%x", str, wrslot);
854
					}
855
					
856
857
858
859
860
					/* CR expansion */
					if(use_pipes) 
						bp=cr_expand(buf,wr,output_buf,wr);
					else
						bp=buf;
861

862
863
					len=0;
					if(wrslot==INVALID_HANDLE_VALUE)
864
						lprintf(LOG_WARNING,"VDD Open failed (not loaded yet?)");
865
					else if(!WriteFile(wrslot,bp,wr,&len,NULL)) {
866
						lprintf(LOG_ERR,"!VDD WriteFile(0x%x, %u) FAILURE (Error=%u)", wrslot, wr, GetLastError());
867
						if(GetMailslotInfo(wrslot,&wr,NULL,NULL,NULL))
868
							lprintf(LOG_DEBUG,"!VDD MailSlot max_msg_size=%u", wr);
869
						else
870
							lprintf(LOG_DEBUG,"!GetMailslotInfo(0x%x)=%u", wrslot, GetLastError());
871
872
					} else {
						if(len!=wr)
873
							lprintf(LOG_WARNING,"VDD short write (%u instead of %u)", len,wr);
874
						RingBufRead(&inbuf, NULL, len);
875
						if(use_pipes && !(mode&EX_NOECHO)) {
876
							/* echo */
877
							RingBufWrite(&outbuf, bp, len);
878
						}
879
880
					}
					wr=len;
881
882
883
884
				}

				/* Read from VDD */

885
				rd=0;
886
				len=sizeof(buf);
887
				avail=RingBufFree(&outbuf)/2;	// leave room for wwiv/telnet expansion
888
#if 0
889
				if(avail==0)
890
					lprintf("Node %d !output buffer full (%u bytes)"
891
						,cfg.node_num,RingBufFull(&outbuf));
892
#endif
893
894
				if(len>avail)
            		len=avail;
895

896
				while(rd<len) {
deuce's avatar
deuce committed
897
					unsigned long waiting=0;
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

					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) {
924
925
926
					if(mode&EX_WWIV) {
                		bp=wwiv_expand(buf, rd, wwiv_buf, rd, useron.misc, wwiv_flag);
						if(rd>sizeof(wwiv_buf))
927
							lprintf(LOG_ERR,"WWIV_BUF OVERRUN");
928
929
					} else if(telnet_mode&TELNET_MODE_OFF) {
						bp=buf;
930
					} else {
931
                		bp=telnet_expand(buf, rd, telnet_buf, rd);
932
						if(rd>sizeof(telnet_buf))
933
							lprintf(LOG_ERR,"TELNET_BUF OVERRUN");
934
					}
935
					if(rd>RingBufFree(&outbuf)) {
936
						lprintf(LOG_ERR,"output buffer overflow");
937
						rd=RingBufFree(&outbuf);
938
					}
939
940
					if(!(mode&EX_BIN) && term_supports(PETSCII))
						petscii_convert(bp, rd);
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
					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);
970
971
				avail=RingBufFree(&outbuf)/2;	// leave room for wwiv/telnet expansion
#if 0
972
				if(avail==0) 
973
					lprintf("Node %d !output buffer full (%u bytes)"
974
						,cfg.node_num,RingBufFull(&outbuf));
975
#endif
976

977
978
				if(len>avail)
            		len=avail;
979
				if(len) {
980
981
982
983
984
985
986
987
988
989
990
991
992
					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;
					}
993
					if(mode&EX_WWIV) {
994
                		bp=wwiv_expand(buf, rd, wwiv_buf, rd, useron.misc, wwiv_flag);
995
						if(rd>sizeof(wwiv_buf))
996
							lprintf(LOG_ERR,"WWIV_BUF OVERRUN");
997
998
					} else if(telnet_mode&TELNET_MODE_OFF) {
						bp=buf;
999
					} else {
1000
                		bp=telnet_expand(buf, rd, telnet_buf, rd);
1001
						if(rd>sizeof(telnet_buf))
1002
							lprintf(LOG_ERR,"TELNET_BUF OVERRUN");
1003
1004
					}
					if(rd>RingBufFree(&outbuf)) {
1005
						lprintf(LOG_ERR,"output buffer overflow");
1006
1007
						rd=RingBufFree(&outbuf);
					}
1008
1009
					if(!(mode&EX_BIN) && term_supports(PETSCII))
						petscii_convert(bp, rd);
1010
1011
1012
					RingBufWrite(&outbuf, bp, rd);
				}
			}
1013
#if defined(_DEBUG) && 0
1014
1015
1016
1017
1018
1019
			if(rd>1) {
				sprintf(str,"Node %d read %5d bytes from xtrn", cfg.node_num, rd);
				OutputDebugString(str);
			}
#endif
            if((!rd && !wr) || hungup) {
1020
1021
1022
1023
1024

				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 */
1025
1026
				if(loop_since_io>=3) {

1027
					if(online && hangup_event!=NULL
1028
1029
1030
1031
1032
1033
1034
1035
1036
						&& WaitForSingleObject(hangup_event,0)==WAIT_OBJECT_0) {
						lprintf(LOG_NOTICE,"Node %d External program requested hangup (dropped DTR)"
							,cfg.node_num);
						hangup();
					}

					if(WaitForSingleObject(process_info.hProcess,0)==WAIT_OBJECT_0)
						break;	/* Process Terminated */
				}
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046

				/* 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 */
1047
				if((loop_since_io%300)==0) {
1048
#if defined(_DEBUG)
1049
1050
1051
1052
1053
1054
1055
					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);
1056
				}
1057
				sem_trywait_block(&inbuf.sem,100);
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
            } 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);
		}
	}

1078
    if(!(mode&EX_BG)) {			/* !background execution */
1079

1080
1081
1082
        if(GetExitCodeProcess(process_info.hProcess, &retval)==FALSE)
            errormsg(WHERE, ERR_CHK, "ExitCodeProcess",(DWORD)process_info.hProcess);

1083
		if(retval==STILL_ACTIVE) {
1084
			lprintf(LOG_INFO,"Node %d Terminating process from line %d",cfg.node_num,__LINE__);
1085
			TerminateProcess(process_info.hProcess, GetLastError());
1086
		}	
1087

1088
	 	// Get return value
1089
1090
1091
1092
1093
1094
1095
		if(!native) {
    		sprintf(str,"%sDOSXTRN.RET", cfg.node_dir);
			FILE* fp=fopen(str,"r");
			if(fp!=NULL) {
				fscanf(fp,"%d",&retval);
				fclose(fp);
			}
1096
1097
1098
		}
	}

1099
	XTRN_CLEANUP;
1100
	CloseHandle(process_info.hProcess);
1101
1102
1103

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

1104
		if(native) {
1105
1106
			
			/* Re-enable blocking (incase disabled by xtrn program) */
1107
1108
			ulong l=0;
			ioctlsocket(client_socket, FIONBIO, &l);
1109
1110

			/* Re-set socket options */
1111
			if(set_socket_options(&cfg, client_socket, client.protocol, str, sizeof(str)))
1112
1113
				lprintf(LOG_ERR,"%04d !ERROR %s",client_socket, str);

1114
			if(input_thread_mutex_locked && input_thread_running) {
1115
1116
1117
				pthread_mutex_unlock(&input_thread_mutex);
				input_thread_mutex_locked=false;
			}
1118
		}
1119

1120
1121
		curatr=~0;			// Can't guarantee current attributes