xtrn.cpp 45 KB
Newer Older
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
/* xtrn.cpp */

/* Synchronet external program support routines */

/* $Id$ */

/****************************************************************************
 * @format.tab-size 4		(Plain Text/Source Code File Header)			*
 * @format.use-tabs true	(see http://www.synchro.net/ptsc_hdr.html)		*
 *																			*
 * Copyright 2000 Rob Swindell - http://www.synchro.net/copyright.html		*
 *																			*
 * This program is free software; you can redistribute it and/or			*
 * modify it under the terms of the GNU General Public License				*
 * as published by the Free Software Foundation; either version 2			*
 * of the License, or (at your option) any later version.					*
 * See the GNU General Public License for more details: gpl.txt or			*
 * http://www.fsf.org/copyleft/gpl.html										*
 *																			*
 * Anonymous FTP access to the most recent released source is available at	*
 * ftp://vert.synchro.net, ftp://cvs.synchro.net and ftp://ftp.synchro.net	*
 *																			*
 * Anonymous CVS access to the development source and modification history	*
 * is available at cvs.synchro.net:/cvsroot/sbbs, example:					*
 * cvs -d :pserver:anonymous@cvs.synchro.net:/cvsroot/sbbs login			*
 *     (just hit return, no password is necessary)							*
 * cvs -d :pserver:anonymous@cvs.synchro.net:/cvsroot/sbbs checkout src		*
 *																			*
 * For Synchronet coding style and modification guidelines, see				*
 * http://www.synchro.net/source.html										*
 *																			*
 * You are encouraged to submit any modifications (preferably in Unix diff	*
 * format) via e-mail to mods@synchro.net									*
 *																			*
 * Note: If this box doesn't appear square, then you need to fix your tabs.	*
 ****************************************************************************/

#include "sbbs.h"
#include "cmdshell.h"
#include "telnet.h"

42
43
#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
55
	#include <pty.h>
#endif
56
57
58
59
60

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

61
	#include <termios.h>
62

63
64
65
66
67
#if defined(__solaris__)
	#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)
68
69
70
71
72
	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
	};
73
74
#endif

75
76
77
78
#endif	/* __unix__ */

#define XTRN_IO_BUF_LEN 5000

79
80
81
82
83
84
85
86
87
88
/*****************************************************************************/
/* 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++) {
89
        if(buf[i]==CTRL_C) {	/* WWIV color escape char */
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
            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);
}
138
139

/*****************************************************************************/
140
// Escapes Telnet IAC (255) by doubling the IAC char
141
/*****************************************************************************/
142
BYTE* telnet_expand(BYTE* inbuf, ulong inlen, BYTE* outbuf, ulong& newlen)
143
144
145
146
147
148
{
	BYTE*   first_iac;
	ulong	i,outlen;

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

149
	if(first_iac==NULL) {	/* Nothing to expand */
150
151
152
153
		newlen=inlen;
		return(inbuf);
	}

154
155
	outlen=first_iac-inbuf;
	memcpy(outbuf, inbuf, outlen);
156
157
158

    for(i=outlen;i<inlen;i++) {
		if(inbuf[i]==TELNET_IAC)
159
			outbuf[outlen++]=TELNET_IAC;
160
161
162
163
164
		outbuf[outlen++]=inbuf[i];
	}
    newlen=outlen;
    return(outbuf);
}
165

166
167
#define XTRN_LOADABLE_MODULE								\
	if(cmdline[0]=='*') {   /* Baja module or JavaScript */	\
168
		SAFECOPY(str,cmdline+1);							\
169
170
		p=strchr(str,SP);									\
		if(p) {												\
171
			strcpy(main_csi.str,p+1);						\
172
173
174
175
176
177
178
179
180
181
182
183
184
185
			*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
186
187
188
189
190
191
192

#ifdef _WIN32

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

extern SOCKET node_socket[];

193
194
195
196
197
198
199
200
// -------------------------------------------------------------------------
// 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.
//
201
202
203
typedef HANDLE (WINAPI *OPENVXDHANDLE)(HANDLE);

OPENVXDHANDLE GetAddressOfOpenVxDHandle(void)
204
{
205
	return((OPENVXDHANDLE)GetProcAddress(hK32, "OpenVxDHandle"));
206
207
}

208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
/*****************************************************************************/
// 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);
}

224
225
226
227
228
229
230
231
232
233
234
/* 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)

235
236
237
238
239
/****************************************************************************/
/* Runs an external program 												*/
/****************************************************************************/
int sbbs_t::external(char* cmdline, long mode, char* startup_dir)
{
240
	char	str[MAX_PATH+1],*p,*p_startup_dir;
241
	char	path[MAX_PATH+1];
242
243
244
245
246
	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];
247
248
	BYTE	buf[XTRN_IO_BUF_LEN],*bp;
    BYTE 	telnet_buf[XTRN_IO_BUF_LEN*2];
249
    BYTE 	output_buf[XTRN_IO_BUF_LEN*2];
250
251
    BYTE 	wwiv_buf[XTRN_IO_BUF_LEN*2];
    bool	wwiv_flag=false;
252
    bool	native=false;			// DOS program by default
253
	bool	nt=false;				// WinNT/2K? 
254
    bool	was_online=true;
255
	bool	rio_abortable_save;
256
	bool	use_pipes=false;	// NT-compatible console redirection
257
	uint	i;
258
259
260
261
    time_t	hungup=0;
	HANDLE	vxd=INVALID_HANDLE_VALUE;
	HANDLE	rdslot=INVALID_HANDLE_VALUE;
	HANDLE	wrslot=INVALID_HANDLE_VALUE;
262
	HANDLE  start_event=NULL;
263
	HANDLE	hungup_event=NULL;
264
265
	HANDLE	rdoutpipe;
	HANDLE	wrinpipe;
266
267
268
269
270
271
    PROCESS_INFORMATION process_info;
	DWORD	hVM;
	DWORD	rd;
    DWORD	wr;
    DWORD	len;
    DWORD	avail;
272
273
	DWORD	dummy;
	DWORD	msglen;
274
275
276
	DWORD	retval;
	DWORD	last_error;
	DWORD	loop_since_io=0;
277
	struct	tm tm;
278
	sbbsexec_start_t start;
279
	OPENVXDHANDLE OpenVxDHandle;
280

281
282
283
	if(online==ON_LOCAL)
		eprintf("Executing external: %s",cmdline);

284
285
	XTRN_LOADABLE_MODULE;
	XTRN_LOADABLE_JS_MODULE;
286

287
	attr(cfg.color[clr_external]);		/* setup default attributes */
288

289
290
291
    SAFECOPY(str,cmdline);				/* Set str to program name only */
	truncstr(str," ");
    SAFECOPY(fname,getfname(str));
292
293

    for(i=0;i<cfg.total_natvpgms;i++)
294
        if(!stricmp(fname,cfg.natvpgm[i]->name))
295
296
297
298
            break;
    if(i<cfg.total_natvpgms || mode&EX_NATIVE)
        native=true;

rswindell's avatar
rswindell committed
299
	if(mode&EX_SH || strcspn(cmdline,"<>|")!=strlen(cmdline)) 
300
301
302
303
304
305
306
307
308
309
		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);

310
	SAFECOPY(realcmdline, fullcmdline);	// for errormsg if failed to execute
311
312

	now=time(NULL);
313
314
	if(localtime_r(&now,&tm)==NULL)
		memset(&tm,0,sizeof(tm));
315

316
317
318
319
320
	OpenVxDHandle=GetAddressOfOpenVxDHandle();

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

321
322
323
324
325
326
	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());
	}

327
328
329
	if(native && mode&EX_OUTR && !(mode&EX_OFFLINE))
		use_pipes=true;

330
 	if(native) { // Native (32-bit) external
331
332
333
334

		// Current environment passed to child process
		sprintf(dszlog,"DSZLOG=%sPROTOCOL.LOG",cfg.node_dir);
		sprintf(sbbsnode,"SBBSNODE=%s",cfg.node_dir);
335
		sprintf(sbbsctrl,"SBBSCTRL=%s",cfg.ctrl_dir);
336
337
338
		sprintf(sbbsdata,"SBBSDATA=%s",cfg.data_dir);
		sprintf(sbbsexec,"SBBSEXEC=%s",cfg.exec_dir);
		sprintf(sbbsnnum,"SBBSNNUM=%d",cfg.node_num);
339
340
		putenv(dszlog); 		/* Makes the DSZ LOG active */
		putenv(sbbsnode);
341
		putenv(sbbsctrl);
342
343
344
		putenv(sbbsdata);
		putenv(sbbsexec);
		putenv(sbbsnnum);
345
346
347
348
349
350
351
352
353
354
355
356
		/* 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);
357
358
359

    } else { // DOS external

360
361
		sprintf(path,"%sDOSXTRN.RET", cfg.node_dir);
		remove(path);
362
363

    	// Create temporary environment file
364
365
    	sprintf(path,"%sDOSXTRN.ENV", cfg.node_dir);
        FILE* fp=fopen(path,"w");
366
        if(fp==NULL) {
367
			XTRN_CLEANUP;
368
        	errormsg(WHERE, ERR_CREATE, path, 0);
369
            return(errno);
370
371
372
373
        }
        fprintf(fp, "%s\n", fullcmdline);
		fprintf(fp, "DSZLOG=%sPROTOCOL.LOG\n", cfg.node_dir);
        fprintf(fp, "SBBSNODE=%s\n", cfg.node_dir);
374
375
376
        fprintf(fp, "SBBSCTRL=%s\n", cfg.ctrl_dir);
		fprintf(fp, "SBBSDATA=%s\n", cfg.data_dir);
		fprintf(fp, "SBBSEXEC=%s\n", cfg.exec_dir);
377
        fprintf(fp, "SBBSNNUM=%d\n", cfg.node_num);
378
379
380
381
382
383
		/* 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);
384
385
        fclose(fp);

386
387
		SAFECOPY(str,path);	// incase GetShortPathName fails
		GetShortPathName(path,str,sizeof(str));
388
389
        sprintf(fullcmdline, "%sDOSXTRN.EXE %s", cfg.exec_dir, str);

390
		if(!(mode&EX_OFFLINE) && nt) {	// Windows NT/2000
391
392
393
394
395
			i=SBBSEXEC_MODE_FOSSIL;
			if(mode&EX_INR)
           		i|=SBBSEXEC_MODE_DOS_IN;
			if(mode&EX_OUTR)
        		i|=SBBSEXEC_MODE_DOS_OUT;
396
397
			sprintf(str," NT %u %u %u"
				,cfg.node_num,i,startup->xtrn_polls_before_yield);
398
399
400
401
402
403
404
405
406
			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) {
407
				XTRN_CLEANUP;
408
409
410
411
412
413
414
415
416
417
418
				errormsg(WHERE, ERR_CREATE, "exec start event", 0);
				return(GetLastError());
			}

			sprintf(str,"\\\\.\\mailslot\\sbbsexec\\rd%d"
				,cfg.node_num);
			rdslot=CreateMailslot(str
				,sizeof(buf)			// Maximum message size (0=unlimited)
				,0						// Read time-out
				,NULL);                 // Security
			if(rdslot==INVALID_HANDLE_VALUE) {
419
				XTRN_CLEANUP;
420
421
422
423
424
425
426
427
428
429
430
431
				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) {
432
				XTRN_CLEANUP;
433
434
435
436
437
438
439
440
441
442
				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) {
443
				XTRN_CLEANUP;
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
				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;

459
460
			sprintf(str," 95 %u %u %u"
				,cfg.node_num,start.mode,startup->xtrn_polls_before_yield);
461
462
			strcat(fullcmdline,str);

463
464
465
466
467
468
469
470
471
472
			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
				)) {
473
				XTRN_CLEANUP;
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
				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;
	}
495
    if(startup->options&BBS_OPT_XTRN_MINIMIZED) {
496
497
498
    	startup_info.wShowWindow=SW_SHOWMINNOACTIVE;
        startup_info.dwFlags|=STARTF_USESHOWWINDOW;
    }
499
500
501
502
503
504
505
506
507
	if(use_pipes) {
		// Set up the security attributes struct.
		SECURITY_ATTRIBUTES sa;
		memset(&sa,0,sizeof(sa));
		sa.nLength= sizeof(SECURITY_ATTRIBUTES);
		sa.lpSecurityDescriptor = NULL;
		sa.bInheritHandle = TRUE;

		// Create the child output pipe.
508
		if(!CreatePipe(&rdoutpipe,&startup_info.hStdOutput,&sa,0)) {
509
510
511
512
513
514
			errormsg(WHERE,ERR_CREATE,"stdout pipe",0);
			return(GetLastError());
		}
		startup_info.hStdError=startup_info.hStdOutput;

		// Create the child input pipe.
515
		if(!CreatePipe(&startup_info.hStdInput,&wrinpipe,&sa,0)) {
516
517
518
			errormsg(WHERE,ERR_CREATE,"stdin pipe",0);
			return(GetLastError());
		}
519

520
521
522
523
524
525
526
527
528
529
530
531
532
533
		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;
	}
534
	if(native && !(mode&EX_OFFLINE)) {
535
		/* temporary */
536
537
538
		FILE* fp;
		sprintf(fname,"%sDOOR32.SYS",cfg.node_dir);
		fp=fopen(fname,"wb");
539
		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"
540
			"%d\r\n%d\r\n"
541
542
			,mode&EX_OUTR ? 0 /* Local */ : 2 /* Telnet */
			,mode&EX_OUTR ? INVALID_SOCKET : client_socket_dup
543
			,VERSION_NOTICE,REVISION
544
545
546
547
548
549
550
551
			,useron.number
			,useron.name
			,useron.alias
			,useron.level
			,timeleft/60
			,useron.misc&ANSI ? 1 : 0
			,cfg.node_num);
		fclose(fp);
552
553

		/* not temporary */
554
		if(!(mode&EX_INR)) {
555
			pthread_mutex_lock(&input_thread_mutex);
556
557
			input_thread_mutex_locked=true;
		}
558
559
560
561
562
563
564
	}

    if(!CreateProcess(
		NULL,			// pointer to name of executable module
		fullcmdline,  	// pointer to command line string
		NULL,  			// process security attributes
		NULL,   		// thread security attributes
565
		native && !(mode&EX_OFFLINE),	 			// handle inheritance flag
566
		CREATE_NEW_CONSOLE/*|CREATE_SEPARATE_WOW_VDM*/, // creation flags
567
568
569
570
571
        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
		)) {
572
		XTRN_CLEANUP;
573
574
575
576
		if(input_thread_mutex_locked) {
			pthread_mutex_unlock(&input_thread_mutex);
			input_thread_mutex_locked=false;
		}
577
		SetLastError(last_error);	/* Restore LastError */
578
579
580
581
        errormsg(WHERE, ERR_EXEC, realcmdline, mode);
        return(GetLastError());
    }

582
583
584
585
586
587
588
589
590
591
592
#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

593
594
	CloseHandle(process_info.hThread);

595
596
597
598
599
	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) {
600
				XTRN_CLEANUP;
601
                TerminateProcess(process_info.hProcess, __LINE__);
602
				CloseHandle(process_info.hProcess);
603
604
605
606
607
				errormsg(WHERE, ERR_TIMEOUT, "start_event", retval);
				return(GetLastError());
			}

			CloseHandle(start_event);
608
			start_event=NULL;	/* Mark as closed */
609
610
611
612
613
614
615
616
617
618
619

			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
				)) {
620
				XTRN_CLEANUP;
621
                TerminateProcess(process_info.hProcess, __LINE__);
622
				CloseHandle(process_info.hProcess);
623
624
625
626
627
				errormsg(WHERE, ERR_IOCTL, SBBSEXEC_VXD, SBBSEXEC_IOCTL_COMPLETE);
				return(GetLastError());
			}
		}
	}
628
    ReleaseMutex(exec_mutex);
629

630
	/* Disable Ctrl-C checking */
631
632
633
634
	if(!(mode&EX_OFFLINE)) {
		rio_abortable_save=rio_abortable;
		rio_abortable=false;
	}
635

636
    // Executing app in foreground?, monitor
637
    retval=STILL_ACTIVE;
638
    while(!(mode&EX_BG)) {
639
640
		if(mode&EX_CHKTIME)
			gettimeleft();
641
642
        if(!online && !(mode&EX_OFFLINE)) { // Tell VXD/VDD and external that user hung-up
        	if(was_online) {
643
644
				sprintf(str,"%s hung-up in external program",useron.alias);
				logline("X!",str);
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
            	hungup=time(NULL);
				if(!native) {
					if(nt)
						SetEvent(hungup_event);
					else if(!DeviceIoControl(
						vxd,		// handle to device of interest
						SBBSEXEC_IOCTL_DISCONNECT,	// operation to perform
						&hVM,		// pointer to buffer to supply input data
						sizeof(hVM),// size of input buffer
						NULL,		// pointer to buffer to receive output data
						0,			// size of output buffer
						&rd,		// pointer to variable to receive output byte count
						NULL		// Overlapped I/O
						)) {
						errormsg(WHERE, ERR_IOCTL, SBBSEXEC_VXD, SBBSEXEC_IOCTL_DISCONNECT);
						break;
					}
				}
	            was_online=false;
            }
            if(hungup && time(NULL)-hungup>5) 
                TerminateProcess(process_info.hProcess, 2112);
        }
668
669
		if((native && !use_pipes) || mode&EX_OFFLINE) {	
			/* Monitor for process termination only */
670
671
672
673
674
675
676
677
678
679
            if(GetExitCodeProcess(process_info.hProcess, &retval)==FALSE) {
                errormsg(WHERE, ERR_CHK, "ExitCodeProcess"
                   ,(DWORD)process_info.hProcess);
                break;
            }
            if(retval!=STILL_ACTIVE)
                break;
        	Sleep(500);
		} else {

680
			if(nt || use_pipes) {	// Windows NT/2000
681
682
683
684
685

				/* Write to VDD */

				wr=RingBufPeek(&inbuf,buf,sizeof(buf));
				if(wr) {
686
					if(!use_pipes && wrslot==INVALID_HANDLE_VALUE) {
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
						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
					}
703
					
704
705
706
707
708
					/* CR expansion */
					if(use_pipes) 
						bp=cr_expand(buf,wr,output_buf,wr);
					else
						bp=buf;
709

710
					if(wrslot!=INVALID_HANDLE_VALUE
711
						&& WriteFile(wrslot,bp,wr,&len,NULL)==TRUE) {
712
713
						RingBufRead(&inbuf, NULL, len);
						wr=len;
714
715
						if(use_pipes) {
							/* echo */
716
							RingBufWrite(&outbuf, bp, wr);
717
718
							sem_post(&output_sem);
						}
719
720
721
722
723
724
					} else		// VDD not loaded yet
						wr=0;
				}

				/* Read from VDD */

725
				rd=0;
726
				len=sizeof(buf);
727
				avail=RingBufFree(&outbuf)/2;	// leave room for wwiv/telnet expansion
728
#if 0
729
				if(avail==0)
730
					lprintf("Node %d !output buffer full (%u bytes)"
731
						,cfg.node_num,RingBufFull(&outbuf));
732
#endif
733
734
				if(len>avail)
            		len=avail;
735

736
				while(rd<len) {
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
					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) {
764
765
766
767
768
					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 {
769
                		bp=telnet_expand(buf, rd, telnet_buf, rd);
770
771
772
						if(rd>sizeof(telnet_buf))
							errorlog("TELNET_BUF OVERRUN");
					}
773
774
775
					if(rd>RingBufFree(&outbuf)) {
						errorlog("output buffer overflow");
						rd=RingBufFree(&outbuf);
776
					}
777
					RingBufWrite(&outbuf, bp, rd);
778
					sem_post(&output_sem);
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
				}
			} 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);
807
808
				avail=RingBufFree(&outbuf)/2;	// leave room for wwiv/telnet expansion
#if 0
809
				if(avail==0) 
810
					lprintf("Node %d !output buffer full (%u bytes)"
811
						,cfg.node_num,RingBufFull(&outbuf));
812
#endif
813

814
815
				if(len>avail)
            		len=avail;
816
				if(len) {
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
					if(!DeviceIoControl(
						vxd,					// handle to device of interest
						SBBSEXEC_IOCTL_READ,	// control code of operation to perform
						&hVM,					// pointer to buffer to supply input data
						sizeof(hVM),			// size of input buffer
						buf,					// pointer to buffer to receive output data
						len,					// size of output buffer
						&rd,					// pointer to variable to receive output byte count
						NULL					// Overlapped I/O
						)) {
						errormsg(WHERE, ERR_IOCTL, SBBSEXEC_VXD, SBBSEXEC_IOCTL_READ);
						break;
					}
#if 0
					if(rd>1)
                		lprintf("read %d bytes from xtrn", rd);
#endif

835
					if(mode&EX_WWIV) {
836
                		bp=wwiv_expand(buf, rd, wwiv_buf, rd, useron.misc, wwiv_flag);
837
838
839
						if(rd>sizeof(wwiv_buf))
							errorlog("WWIV_BUF OVERRUN");
					} else {
840
                		bp=telnet_expand(buf, rd, telnet_buf, rd);
841
842
843
844
845
846
847
						if(rd>sizeof(telnet_buf))
							errorlog("TELNET_BUF OVERRUN");
					}
					if(rd>RingBufFree(&outbuf)) {
						errorlog("output buffer overflow");
						rd=RingBufFree(&outbuf);
					}
848
					RingBufWrite(&outbuf, bp, rd);
849
					sem_post(&output_sem);
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
				}
			}
            if(!rd && !wr) {
				if(++loop_since_io>=1000) {
	                if(GetExitCodeProcess(process_info.hProcess, &retval)==FALSE) {
	                    errormsg(WHERE, ERR_CHK, "ExitCodeProcess"
						,(DWORD)process_info.hProcess);
						break;
					}
					if(retval!=STILL_ACTIVE)  {
#if 0
						if(hungup)
							Sleep(5000);	// Give the application time to close files
#endif
	                    break;
					}
866
867
					

868
					if(!(loop_since_io%3000)) {
869
870
871
872
						OutputDebugString(".");

						// Let's make sure the socket is up
						// Sending will trigger a socket d/c detection
873
874
						if(!(startup->options&BBS_OPT_NO_TELNET_GA))
							send_telnet_cmd(TELNET_GA,0);
875
876

						// Check if the node has been interrupted
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
						getnodedat(cfg.node_num,&thisnode,0);
						if(thisnode.misc&NODE_INTR)
							break;
					}
					Sleep(1);
				}
            } else
				loop_since_io=0;
        }
	}

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

903
    if(!(mode&EX_BG)) {			/* !background execution */
904

905
906
		if(retval==STILL_ACTIVE)
			TerminateProcess(process_info.hProcess, GetLastError());
907

908
	 	// Get return value
909
910
911
912
913
914
915
916
    	sprintf(str,"%sDOSXTRN.RET", cfg.node_dir);
        FILE* fp=fopen(str,"r");
        if(fp!=NULL) {
			fscanf(fp,"%d",&retval);
			fclose(fp);
		}
	}

917
	XTRN_CLEANUP;
918
	CloseHandle(process_info.hProcess);
919
920
921

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

922
923
924
		if(native) {
			ulong l=0;
			ioctlsocket(client_socket, FIONBIO, &l);
925
926
927
928
			if(input_thread_mutex_locked) {
				pthread_mutex_unlock(&input_thread_mutex);
				input_thread_mutex_locked=false;
			}
929
		}
930

931
932
		curatr=~0;			// Can't guarantee current attributes
		attr(LIGHTGRAY);	// Force to "normal"
933

934
		rio_abortable=rio_abortable_save;	// Restore abortable state
935

936
		/* Got back to Text/NVT mode */
937
938
939
940
		if(telnet_mode&TELNET_MODE_BIN_RX) {
			send_telnet_cmd(TELNET_DONT,TELNET_BINARY);
			telnet_mode&=~TELNET_MODE_BIN_RX;
		}
941
	}
942

943
944
//	lprintf("%s returned %d",realcmdline, retval);

945
946
	errorlevel = retval; // Baja-retrievable error value

947
948
949
	return(retval);
}

950
951
#else	/* !WIN32 */

952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
/*****************************************************************************/
// 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);
}

968
969
#define MAX_ARGS 1000

970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
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
#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);
	switch (pid = fork()) {
	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 */

1057
1058
int sbbs_t::external(char* cmdline, long mode, char* startup_dir)
{
1059
1060
	char	str[MAX_PATH+1];
	char	fname[MAX_PATH+1];
1061
	char	fullpath[MAX_PATH+1];
1062
	char	fullcmdline[MAX_PATH+1];
1063
	char*	argv[MAX_ARGS];
1064
	char*	p;
1065
1066
1067
	BYTE*	bp;
	BYTE	buf[XTRN_IO_BUF_LEN];
    BYTE 	output_buf[XTRN_IO_BUF_LEN*2];
1068
	ulong	avail;
1069
1070
    ulong	output_len;
	bool	native=false;			// DOS program by default
rswindell's avatar
rswindell committed
1071
	bool	rio_abortable_save;
rswindell's avatar
rswindell committed
1072
	int		i;
1073
1074
	int		rd;
	int		wr;
1075
	int		argc;
1076
	pid_t	pid;
1077
1078
	int		in_pipe[2];
	int		out_pipe[2];
1079
1080
	fd_set ibits;
	struct timeval timeout;
1081

1082
1083
1084
	if(online==ON_LOCAL)
		eprintf("Executing external: %s",cmdline);

1085
1086
	XTRN_LOADABLE_MODULE;
	XTRN_LOADABLE_JS_MODULE;
1087

1088
	attr(cfg.color[clr_external]);  /* setup default attributes */
1089

1090
1091
1092
    SAFECOPY(str,cmdline);			/* Set fname to program name only */
	truncstr(str," ");
    SAFECOPY(fname,getfname(str));
1093
1094

    for(i=0;i<cfg.total_natvpgms;i++)
1095
        if(!stricmp(fname,cfg.natvpgm[i]->name))
1096
1097
1098
1099
            break;
    if(i<cfg.total_natvpgms || mode&EX_NATIVE)
        native=true;

1100
1101
	sprintf(fullpath,"%s%s",startup_dir,fname);
	if(startup_dir!=NULL && cmdline[0]!='/' && cmdline[0]!='.' && fexist(fullpath))
1102
1103
1104
		sprintf(fullcmdline,"%s%s",startup_dir,cmdline);
	else
		SAFECOPY(fullcmdline,cmdline);
1105
1106
1107
1108

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

		// Current environment passed to child process
1109
1110
1111
1112
1113
1114
1115
1116
		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))
1117
        	errormsg(WHERE,ERR_WRITE,"environment",0);
1118
1119

	} else {
1120
#if defined(__FreeBSD__)
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
		/* 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);
1158
1159
1160
1161
1162
1163
		SAFECOPY(str,fullcmdline);
		sprintf(fullcmdline,"%s -F %s",startup->dosemu_path,str);
#else
		bprintf("\r\nExternal DOS programs are not yet supported in\r\n%s\r\n"
			,VERSION_NOTICE);
		return(-1);
1164
#endif
1165
1166
	}

1167
1168
	if(!(mode&EX_INR))
		pthread_mutex_lock(&input_thread_mutex);
1169
1170
1171

	if((mode&EX_INR) && (mode&EX_OUTR))  {
		struct winsize winsize;
1172
1173
1174
1175
1176
1177
1178
1179
1180
		struct termios term;
		memset(&term,0,sizeof(term));
		cfsetspeed(&term,B19200);
		if(mode&EX_BIN)
			cfmakeraw(&term);
		else {
			term.c_iflag = TTYDEF_IFLAG;
			term.c_oflag = TTYDEF_OFLAG;
			term.c_lflag = TTYDEF_LFLAG;
1181
			term.c_cflag = TTYDEF_CFLAG;
1182
			memcpy(term.c_cc,ttydefchars,sizeof(term.c_cc));
1183
		}
1184
1185
1186
		winsize.ws_row=rows;
		// #warning Currently cols are forced to 80 apparently TODO
		winsize.ws_col=80;
1187
		if((pid=forkpty(&in_pipe[1],NULL,&term,&winsize))==-1) {
1188
			pthread_mutex_unlock(&input_thread_mutex);
1189
			errormsg(WHERE,ERR_EXEC,fullcmdline,0);
1190
1191
			return(-1);
		}
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
		out_pipe[0]=in_pipe[1];
	}
	else  {
		if(mode&EX_INR)
			if(pipe(in_pipe)!=0) {
				errormsg(WHERE,ERR_CREATE,"in_pipe",0);
				return(-1);
			}
		if(mode&EX_OUTR)
			if(pipe(out_pipe)!=0) {
				errormsg(WHERE,ERR_CREATE,"out_pipe",0);
				return(-1);
			}


		if((pid=fork())==-1) {
			pthread_mutex_unlock(&input_thread_mutex);
1209
			errormsg(WHERE,ERR_EXEC,fullcmdline,0);
1210
1211
			return(-1);
		}
1212
1213
	}
	if(pid==0) {	/* child process */
1214
1215
1216
		sigset_t        sigs;
		sigfillset(&sigs);
		sigprocmask(SIG_UNBLOCK,&sigs,NULL);
1217
1218
		if(!(mode&EX_BIN))  {
			static char	term_env[256];
1219
1220
1221
1222
			if(useron.misc&ANSI)
				sprintf(term_env,"TERM=%s",startup->xtrn_term_ansi);
			else
				sprintf(term_env,"TERM=%s",startup->xtrn_term_dumb);
1223
1224
			putenv(term_env);
		}
1225
1226
1227
1228
1229
#ifdef __FreeBSD__
		if(!native)
			chdir(cfg.node_dir);
		else
#endif
1230
1231
		if(startup_dir!=NULL && startup_dir[0])
			chdir(startup_dir);
1232

1233
		if(mode&EX_SH || strcspn(fullcmdline,"<>|;\"")!=strlen(fullcmdline)) {
1234
1235
			argv[0]=comspec;
			argv[1]="-c";
1236
			argv[2]=fullcmdline;
1237
1238
			argv[3]=NULL;
		} else {
1239
			argv[0]=fullcmdline;	/* point to the beginning of the string */
1240
			argc=1;
1241
1242
1243
1244
			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 */
1245
1246
1247
				}
			argv[argc]=NULL;
		}
1248

1249
		if(mode&EX_INR && !(mode&EX_OUTR))  {
1250
1251
1252
1253
			close(in_pipe[1]);		/* close write-end of pipe */
			dup2(in_pipe[0],0);		/* redirect stdin */
			close(in_pipe[0]);		/* close excess file descriptor */
		}
1254

1255
		if(mode&EX_OUTR && !(mode&EX_INR)) {
1256
1257
1258
1259
			close(out_pipe[0]);		/* close read-end of pipe */
			dup2(out_pipe[1],1);	/* stdout */
			dup2(out_pipe[1],2);	/* stderr */
			close(out_pipe[1]);		/* close excess file descriptor */
1260
1261
		}	

1262
1263
1264
1265
1266
		if(mode&EX_BG)	/* background execution, detach child */
		{
			if(fork())
				exit(0);
			lprintf("Detaching external process pgid=%d",setsid());
1267
1268
   	    }
	
1269
		execvp(argv[0],argv);
1270
1271
		sprintf(str,"!ERROR %d executing %s",errno,argv[0]);
		errorlog(str);
1272
		exit(-1);	/* should never get here */
1273
	}
1274

1275
	lprintf("Node %d executing external: %s",cfg.node_num,fullcmdline);
rswindell's avatar
rswindell committed
1276
1277
1278
1279
1280
1281

	/* Disable Ctrl-C checking */
	if(!(mode&EX_OFFLINE)) {
		rio_abortable_save=rio_abortable;
		rio_abortable=false;
	}
1282
	
1283
	if(mode&EX_OUTR) {
1284
1285
		if(!(mode&EX_INR))
			close(out_pipe[1]);	/* close write-end of pipe */
1286
		while(!terminated) {
1287
1288
			if(waitpid(pid, &i, WNOHANG)!=0)	/* child exited */
				break;
1289
1290
1291

			if(mode&EX_CHKTIME)
				gettimeleft();
1292
			
1293
1294
1295
1296
1297
1298
			if(!online && !(mode&EX_OFFLINE)) {
				sprintf(str,"%s hung-up in external program",useron.alias);
				logline("X!",str);
				break;
			}

1299
1300
1301
1302
1303
1304
1305
			/* Input */	
			if(mode&EX_INR && RingBufFull(&inbuf)) {
				if((wr=RingBufRead(&inbuf,buf,sizeof(buf)))!=0)
					write(in_pipe[1],buf,wr);
			}
				
			/* Output */
1306
1307
1308
1309
1310
1311
1312
1313
			FD_ZERO(&ibits);
			FD_SET(out_pipe[0],&ibits);
			timeout.tv_sec=0;
			timeout.tv_usec=0;
			if(!select(out_pipe[0]+1,&ibits,NULL,NULL,&timeout))  {
				mswait(1);
				continue;
			}
1314