xtrn.cpp 29.7 KB
Newer Older
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
/* xtrn.cpp */

/* Synchronet external program support routines */

/* $Id$ */

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

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

42
43
44
45
#ifdef __unix__
	#include <sys/wait.h>	// WEXITSTATUS
#endif

46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
/*****************************************************************************/
/* 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++) {
        if(buf[i]==3) {	/* ctrl-c, WWIV color escape char */
            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);
}
105
106

/*****************************************************************************/
107
// Escapes Telnet IAC (255) by doubling the IAC char
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
138
139
140
BYTE* telnet_expand(BYTE* inbuf, ulong inlen, BYTE* outbuf, ulong& newlen, bool& iac)
{
	BYTE*   first_iac;
	ulong	i,outlen;

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

	if(first_iac==NULL && !iac) {	/* Nothing to expand */
		newlen=inlen;
		return(inbuf);
	}

	if(first_iac!=NULL) {
		outlen=first_iac-inbuf;
		memcpy(outbuf, inbuf, outlen);
	} else
		outlen=0;

    for(i=outlen;i<inlen;i++) {
		if(iac==true) {
			outbuf[outlen++]=TELNET_IAC;
//			lprintf("Telnet IAC escaped");
		}
		if(inbuf[i]==TELNET_IAC)
			iac=true;
		else
			iac=false;
		outbuf[outlen++]=inbuf[i];
	}
    newlen=outlen;
    return(outbuf);
}
141

142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
#define XTRN_LOADABLE_MODULE								\
	if(cmdline[0]=='*') {   /* Baja module or JavaScript */	\
		sprintf(str,"%.*s",sizeof(str)-1,cmdline+1);		\
		p=strchr(str,SP);									\
		if(p) {												\
			strcpy(main_csi.str,p+1);						\
			*p=0; 											\
		} else												\
			main_csi.str[0]=0;								\
		if(!strchr(str,'.'))								\
			strcat(str,".bin");								\
		return(exec_bin(str,&main_csi));					\
	}														
#ifdef JAVASCRIPT
	#define XTRN_LOADABLE_JS_MODULE							\
	if(cmdline[0]=='?') 	/* JavaScript */				\
		return(js_execfile(cmdline+1))						
#else
	#define XTRN_LOADABLE_JS_MODULE
#endif
162
163
164
165
166
167
168
169
170

#ifdef _WIN32

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

#define XTRN_IO_BUF_LEN 5000

extern SOCKET node_socket[];

171
172
173
174
175
176
177
178
// -------------------------------------------------------------------------
// 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.
//
179
180
181
typedef HANDLE (WINAPI *OPENVXDHANDLE)(HANDLE);

OPENVXDHANDLE GetAddressOfOpenVxDHandle(void)
182
183
184
{
	HINSTANCE hK32;

185
	if ((hK32 = LoadLibrary("KERNEL32")) == NULL)
186
187
		return NULL;

188
	return((OPENVXDHANDLE)GetProcAddress(hK32, "OpenVxDHandle"));
189
190
}

191
192
193
194
195
196
197
198
199
200
201
/* 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)

202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
/****************************************************************************/
/* Runs an external program 												*/
/****************************************************************************/
int sbbs_t::external(char* cmdline, long mode, char* startup_dir)
{
	char	str[256],*p,*p_startup_dir;
	char	fname[128];
    char	fullcmdline[256];
	char	realcmdline[256];
	char	comspec_str[128];
	char	title[256];
	BYTE	buf[XTRN_IO_BUF_LEN],*bp;
    BYTE 	telnet_buf[XTRN_IO_BUF_LEN*2];
    BYTE 	wwiv_buf[XTRN_IO_BUF_LEN*2];
    bool	wwiv_flag=false;
	bool	telnet_flag=false;
218
    bool	native=false;			// DOS program by default
219
	bool	nt=false;				// WinNT/2K? 
220
221
222
223
224
225
    bool	was_online=true;
    uint	i;
    time_t	hungup=0;
	HANDLE	vxd=INVALID_HANDLE_VALUE;
	HANDLE	rdslot=INVALID_HANDLE_VALUE;
	HANDLE	wrslot=INVALID_HANDLE_VALUE;
226
	HANDLE  start_event=NULL;
227
228
229
230
231
232
233
234
235
236
237
238
239
	HANDLE	hungup_event=NULL;
    PROCESS_INFORMATION process_info;
	DWORD	hVM;
	DWORD	rd;
    DWORD	wr;
    DWORD	len;
    DWORD	avail;
	DWORD	dummy;	
	DWORD	retval;
	DWORD	last_error;
	DWORD	loop_since_io=0;
	struct	tm * tm_p;
	sbbsexec_start_t start;
240
	OPENVXDHANDLE OpenVxDHandle;
241

242
243
	XTRN_LOADABLE_MODULE;
	XTRN_LOADABLE_JS_MODULE;
244
245
246
247
248
249
250
251

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

    strcpy(str,cmdline);		/* Set str to program name only */
    p=strchr(str,SP);
    if(p) *p=0;
    strcpy(fname,str);

252
253
    p=strrchr(fname,'/');
    if(!p) p=strrchr(fname,'\\');
254
255
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
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
    if(!p) p=strchr(fname,':');
    if(!p) p=fname;
    else   p++;

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

	if(strcspn(cmdline,"<>|")!=strlen(cmdline)) 
		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);

	strcpy(realcmdline, fullcmdline);	// for errormsg if failed to execute

	now=time(NULL);
	tm_p=gmtime(&now);

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

		// Current environment passed to child process
		sprintf(dszlog,"DSZLOG=%sPROTOCOL.LOG",cfg.node_dir);
		if(putenv(dszlog)) 		/* Makes the DSZ LOG active */
        	errormsg(WHERE,ERR_WRITE,"environment",0);
		sprintf(sbbsnode,"SBBSNODE=%s",cfg.node_dir);
		putenv(sbbsnode);		/* create environment var to contain node num */
		sprintf(sbbsnnum,"SBBSNNUM=%d",cfg.node_num);
		putenv(sbbsnnum);	   /* create environment var to contain node num */

    } else { // DOS external

		sprintf(str,"%sDOSXTRN.RET", cfg.node_dir);
		remove(str);

    	// Create temporary environment file
    	sprintf(str,"%sDOSXTRN.ENV", cfg.node_dir);
        FILE* fp=fopen(str,"w");
        if(fp==NULL) {
        	errormsg(WHERE, ERR_CREATE, str, 0);
301
            return(errno);
302
303
304
305
306
307
308
        }
        fprintf(fp, "%s\n", fullcmdline);
		fprintf(fp, "DSZLOG=%sPROTOCOL.LOG\n", cfg.node_dir);
        fprintf(fp, "SBBSCTRL=%s\n", cfg.ctrl_dir);
        fprintf(fp, "SBBSNODE=%s\n", cfg.node_dir);
        fprintf(fp, "SBBSNNUM=%d\n", cfg.node_num);
		if(tm_p!=NULL) {
309
			fprintf(fp, "DAY=%02u\n", tm_p->tm_mday);
310
			fprintf(fp, "WEEKDAY=%s\n",wday[tm_p->tm_wday]);
311
			fprintf(fp, "MONTHNAME=%s\n",mon[tm_p->tm_mon]);
312
			fprintf(fp, "MONTH=%02u\n",tm_p->tm_mon+1);
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
			fprintf(fp, "YEAR=%u\n",1900+tm_p->tm_year);
		}
        fclose(fp);

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

		if((retval=WaitForSingleObject(exec_mutex,5000))!=WAIT_OBJECT_0) {
			errormsg(WHERE, ERR_TIMEOUT, "exec_mutex", retval);
			return(GetLastError());
		}

		OpenVxDHandle=GetAddressOfOpenVxDHandle();

		if(!(mode&EX_OFFLINE) && OpenVxDHandle==NULL) {	// Windows NT/2000
			nt=true;
			i=SBBSEXEC_MODE_FOSSIL;
			if(mode&EX_INR)
           		i|=SBBSEXEC_MODE_DOS_IN;
			if(mode&EX_OUTR)
        		i|=SBBSEXEC_MODE_DOS_OUT;
			sprintf(str," NT %d %d",cfg.node_num,i);
			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) {
343
				XTRN_CLEANUP;
344
345
346
347
348
349
350
351
352
353
354
				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) {
355
				XTRN_CLEANUP;
356
357
358
359
360
361
362
363
364
365
366
367
				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) {
368
				XTRN_CLEANUP;
369
370
371
372
373
374
375
376
377
378
				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) {
379
				XTRN_CLEANUP;
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
				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;

			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
				)) {
405
				XTRN_CLEANUP;
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
				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;
	}
    if(cfg.startup->options&BBS_OPT_XTRN_MINIMIZED) {
    	startup_info.wShowWindow=SW_SHOWMINNOACTIVE;
        startup_info.dwFlags|=STARTF_USESHOWWINDOW;
    }

	if(native) {
433
		/* temporary */
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
		FILE* fp;
		sprintf(fname,"%sDOOR32.SYS",cfg.node_dir);
		fp=fopen(fname,"wb");
		fprintf(fp,"2\r\n%d\r\n38400\r\nSynchronet %s%c\r\n%d\r\n%s\r\n%s\r\n%d\r\n%d\r\n"
			"%d\r\n%d\r\n"
			,client_socket_dup
			,VERSION,REVISION
			,useron.number
			,useron.name
			,useron.alias
			,useron.level
			,timeleft/60
			,useron.misc&ANSI ? 1 : 0
			,cfg.node_num);
		fclose(fp);
449
450

		/* not temporary */
451
		pthread_mutex_lock(&input_thread_mutex);
452
453
454
455
456
457
458
459
460
461
462
463
464
465
	}

    if(!CreateProcess(
		NULL,			// pointer to name of executable module
		fullcmdline,  	// pointer to command line string
		NULL,  			// process security attributes
		NULL,   		// thread security attributes
		TRUE,  			// handle inheritance flag
		CREATE_NEW_CONSOLE|CREATE_SEPARATE_WOW_VDM, // creation flags
        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
		)) {
466
		XTRN_CLEANUP;
467
		if(native)
468
469
			pthread_mutex_unlock(&input_thread_mutex);
		SetLastError(last_error);	/* Restore LastError */
470
471
472
473
474
475
476
477
478
        errormsg(WHERE, ERR_EXEC, realcmdline, mode);
        return(GetLastError());
    }

	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) {
479
				XTRN_CLEANUP;
480
481
482
483
484
				errormsg(WHERE, ERR_TIMEOUT, "start_event", retval);
				return(GetLastError());
			}

			CloseHandle(start_event);
485
			start_event=NULL;	/* Mark as closed */
486
487
488
489
490
491
492
493
494
495
496

			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
				)) {
497
				XTRN_CLEANUP;
498
499
500
501
502
503
504
				errormsg(WHERE, ERR_IOCTL, SBBSEXEC_VXD, SBBSEXEC_IOCTL_COMPLETE);
				return(GetLastError());
			}
		}
        ReleaseMutex(exec_mutex);
	}

505
506
507
508
	/* Disable Ctrl-C checking */
	bool rio_abortable_save=rio_abortable;
	rio_abortable=false;

509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
    // Executing app, monitor
    retval=STILL_ACTIVE;
    while(1) {
        if(!online && !(mode&EX_OFFLINE)) { // Tell VXD/VDD and external that user hung-up
        	if(was_online) {
				logline("X!","Hung-up in external program");
            	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);
        }
		if(native || mode&EX_OFFLINE) {
            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 {

			if(nt) {	// Windows NT/2000

				/* Write to VDD */

				wr=RingBufPeek(&inbuf,buf,sizeof(buf));
				if(wr) {
					if(wrslot==INVALID_HANDLE_VALUE) {
						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
					}
					if(wrslot!=INVALID_HANDLE_VALUE
						&& WriteFile(wrslot,buf,wr,&len,NULL)==TRUE) {
						RingBufRead(&inbuf, NULL, len);
						wr=len;
					} else		// VDD not loaded yet
						wr=0;
				}

				/* Read from VDD */

				len=sizeof(buf);
				avail=RingBufFree(&outbuf);
				if(len>avail)
            		len=avail;
				if(ReadFile(rdslot,buf,len,&rd,NULL)==TRUE && rd>0) {
					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 {
                		bp=telnet_expand(buf, rd, telnet_buf, rd, telnet_flag);
						if(rd>sizeof(telnet_buf))
							errorlog("TELNET_BUF OVERRUN");
					}
					RingBufWrite(&outbuf, bp, rd);
597
					sem_post(&output_sem);
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
				}
			} else {	// Windows 9x

				/* Write to VXD */

				wr=RingBufPeek(&inbuf, buf+sizeof(hVM),sizeof(buf)-sizeof(hVM));
				if(wr) {
					*(DWORD*)buf=hVM;
					wr+=sizeof(hVM);
					if(!DeviceIoControl(
						vxd,					// handle to device of interest
						SBBSEXEC_IOCTL_WRITE,	// control code of operation to perform
						buf,					// pointer to buffer to supply input data
						wr,						// size of input buffer
						&rd,					// pointer to buffer to receive output data
						sizeof(rd),				// size of output buffer
						&dummy,	 				// pointer to variable to receive output byte count
						NULL					// Overlapped I/O
						)) {
						errormsg(WHERE, ERR_IOCTL, SBBSEXEC_VXD, SBBSEXEC_IOCTL_READ);
						break;
					}
					RingBufRead(&inbuf, NULL, rd);
					wr=rd;
				}
        		/* Read from VXD */
				rd=0;
				len=sizeof(buf);
				avail=RingBufFree(&outbuf);
				if(len>avail)
            		len=avail;
				if(len && avail>=RingBufFull(&outbuf)) {
					if(!DeviceIoControl(
						vxd,					// handle to device of interest
						SBBSEXEC_IOCTL_READ,	// control code of operation to perform
						&hVM,					// pointer to buffer to supply input data
						sizeof(hVM),			// size of input buffer
						buf,					// pointer to buffer to receive output data
						len,					// size of output buffer
						&rd,					// pointer to variable to receive output byte count
						NULL					// Overlapped I/O
						)) {
						errormsg(WHERE, ERR_IOCTL, SBBSEXEC_VXD, SBBSEXEC_IOCTL_READ);
						break;
					}
#if 0
					if(rd>1)
                		lprintf("read %d bytes from xtrn", rd);
#endif

					if(mode&EX_WWIV)
                		bp=wwiv_expand(buf, rd, wwiv_buf, rd, useron.misc, wwiv_flag);
					else
                		bp=telnet_expand(buf, rd, telnet_buf, rd, telnet_flag);
					RingBufWrite(&outbuf, bp, rd);
653
					sem_post(&output_sem);
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
				}
			}
            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;
					}
					if(!(loop_since_io%3000)) {
//						OutputDebugString(".");
						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);
		}
	}

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

701
	XTRN_CLEANUP;
702
703

	if(native)
704
		pthread_mutex_unlock(&input_thread_mutex);
705
706
707
708
709
710
711
712
713
714
715
	else {	// Get return value
    	sprintf(str,"%sDOSXTRN.RET", cfg.node_dir);
        FILE* fp=fopen(str,"r");
        if(fp!=NULL) {
			fscanf(fp,"%d",&retval);
			fclose(fp);
		}
	}

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

716
717
718
719
720
721
722
	rio_abortable=rio_abortable_save;	// Restore abortable state

	/* Got back to Text/NVT mode */
	sprintf(str,"%c%c%c",TELNET_IAC,TELNET_DONT,TELNET_BINARY);
	putcom(str,3);
	telnet_mode&=~TELNET_MODE_BIN_RX;

723
724
725
726
727
//	lprintf("%s returned %d",realcmdline, retval);

	return(retval);
}

728
729
730
731
#else	/* !WIN32 */

int sbbs_t::external(char* cmdline, long mode, char* startup_dir)
{
732
	char	str[256];
733
	char	fname[128];
734
	char*	argv[30];
735
	char*	p;
736
    bool	native=false;			// DOS program by default
rswindell's avatar
rswindell committed
737
	int		i;
738
	int		argc;
739
	pid_t	pid;
740
741
742

	XTRN_LOADABLE_MODULE;
	XTRN_LOADABLE_JS_MODULE;
743

744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
	attr(cfg.color[clr_external]);        /* setup default attributes */

    strcpy(str,cmdline);		/* Set str to program name only */
    p=strchr(str,SP);
    if(p) *p=0;
    strcpy(fname,str);

    p=strrchr(fname,'/');
    if(!p) p=strrchr(fname,'\\');
    if(!p) p=strchr(fname,':');
    if(!p) p=fname;
    else   p++;

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

	if(!native) {
		bprintf("\r\nExternal DOS programs are not yet supported in Synchronet for Linux\r\n");
		return(-1);
	}

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

		// Current environment passed to child process
		sprintf(dszlog,"DSZLOG=%sPROTOCOL.LOG",cfg.node_dir);
		if(putenv(dszlog)) 		/* Makes the DSZ LOG active */
        	errormsg(WHERE,ERR_WRITE,"environment",0);
		sprintf(sbbsnode,"SBBSNODE=%s",cfg.node_dir);
		putenv(sbbsnode);		/* create environment var to contain node num */
		sprintf(sbbsnnum,"SBBSNNUM=%d",cfg.node_num);
		putenv(sbbsnnum);	   /* create environment var to contain node num */

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

783
784
	pthread_mutex_lock(&input_thread_mutex);

785
	if((pid=fork())==-1) {
786
		pthread_mutex_unlock(&input_thread_mutex);
787
788
789
790
791
		errormsg(WHERE,ERR_EXEC,cmdline,0);
		return(-1);
	}

	if(pid==0) {	/* child process */
792
793
		if(startup_dir!=NULL && startup_dir[0])
			chdir(startup_dir);
794

795
		lprintf("Node %02d executing external: %s",cfg.node_num,cmdline);
rswindell's avatar
rswindell committed
796

797
798
799
800
		argv[0]=cmdline;	/* point to the beginning of the string */
		argc=1;
		for(i=0;cmdline[i];i++)	/* Break up command line */
			if(cmdline[i]==SP) {
801
				cmdline[i]=0;			/* insert nulls */
802
803
804
805
				argv[argc++]=cmdline+i+1; /* point to the beginning of the next arg */
			}
		argv[argc]=0;

806
807
808
809
810
811
812
813
		if(mode&EX_INR) 
			dup2(client_socket,0);	/* redirect stdin to socket */

		if(mode&EX_OUTR) {
			dup2(client_socket,1);	/* stdout */
			dup2(client_socket,2);	/* stderr */
		}	

814
815
		execvp(argv[0],argv);
		exit(-1);	/* should never get here */
816
	}
817

818
819
820
821
822
	waitpid(pid, &i, 0);

	pthread_mutex_unlock(&input_thread_mutex);

	return(WEXITSTATUS(i));
823
824
825
826
}

#endif	/* !WIN32 */

827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
uint fakeriobp=0xffff;

/*****************************************************************************/
/* Returns command line generated from instr with %c replacments             */
/*****************************************************************************/
char * sbbs_t::cmdstr(char *instr, char *fpath, char *fspec, char *outstr)
{
	char	str[256],*cmd;
    int		i,j,len;

    if(outstr==NULL)
        cmd=cmdstr_output;
    else
        cmd=outstr;
    len=strlen(instr);
    for(i=j=0;i<len && j<sizeof(cmdstr_output);i++) {
        if(instr[i]=='%') {
            i++;
            cmd[j]=0;
            switch(toupper(instr[i])) {
                case 'A':   /* User alias */
                    strcat(cmd,useron.alias);
                    break;
                case 'B':   /* Baud (DTE) Rate */
                    strcat(cmd,ultoa(dte_rate,str,10));
                    break;
                case 'C':   /* Connect Description */
                    strcat(cmd,connection);
                    break;
                case 'D':   /* Connect (DCE) Rate */
                    strcat(cmd,ultoa((ulong)cur_rate,str,10));
                    break;
                case 'E':   /* Estimated Rate */
                    strcat(cmd,ultoa((ulong)cur_cps*10,str,10));
                    break;
                case 'F':   /* File path */
                    strcat(cmd,fpath);
                    break;
                case 'G':   /* Temp directory */
                    strcat(cmd,cfg.temp_dir);
                    break;
                case 'H':   /* Port Handle or Hardware Flow Control */
869
                    strcat(cmd,ultoa(client_socket_dup,str,10));
870
871
                    break;
                case 'I':   /* UART IRQ Line */
872
                    strcat(cmd,ultoa(cfg.com_irq,str,10));
873
874
875
876
877
878
879
880
                    break;
                case 'J':
                    strcat(cmd,cfg.data_dir);
                    break;
                case 'K':
                    strcat(cmd,cfg.ctrl_dir);
                    break;
                case 'L':   /* Lines per message */
881
                    strcat(cmd,ultoa(cfg.level_linespermsg[useron.level],str,10));
882
883
884
885
886
887
888
889
890
891
892
                    break;
                case 'M':   /* Minutes (credits) for user */
                    strcat(cmd,ultoa(useron.min,str,10));
                    break;
                case 'N':   /* Node Directory (same as SBBSNODE environment var) */
                    strcat(cmd,cfg.node_dir);
                    break;
                case 'O':   /* SysOp */
                    strcat(cmd,cfg.sys_op);
                    break;
                case 'P':   /* COM Port */
893
                    strcat(cmd,ultoa(online==ON_LOCAL ? 0:cfg.com_port,str,10));
894
895
896
897
898
                    break;
                case 'Q':   /* QWK ID */
                    strcat(cmd,cfg.sys_id);
                    break;
                case 'R':   /* Rows */
899
                    strcat(cmd,ultoa(rows,str,10));
900
901
902
903
904
905
                    break;
                case 'S':   /* File Spec */
                    strcat(cmd,fspec);
                    break;
                case 'T':   /* Time left in seconds */
                    gettimeleft();
906
                    strcat(cmd,ultoa(timeleft,str,10));
907
908
                    break;
                case 'U':   /* UART I/O Address (in hex) */
909
                    strcat(cmd,ultoa(cfg.com_base,str,16));
910
911
912
913
914
915
                    break;
                case 'V':   /* Synchronet Version */
                    sprintf(str,"%s%c",VERSION,REVISION);
                    break;
                case 'W':   /* Time-slice API type (mswtype) */
#if 0 //ndef __FLAT__
916
                    strcat(cmd,ultoa(mswtyp,str,10));
917
918
919
920
921
922
923
924
925
926
#endif
                    break;
                case 'X':
                    strcat(cmd,cfg.shell[useron.shell]->code);
                    break;
                case '&':   /* Address of msr */
                    sprintf(str,"%lu",&fakeriobp);
                    strcat(cmd,str);
                    break;
                case 'Y':
927
                    strcat(cmd,comspec);
928
929
930
931
                    break;
                case 'Z':
                    strcat(cmd,cfg.text_dir);
                    break;
932
933
934
935
936
937
938
939
940
941
				case '~':	/* DOS-compatible (8.3) filename */
#ifdef _WIN32
					char sfpath[MAX_PATH];
					strcpy(sfpath,fpath);
					GetShortPathName(fpath,sfpath,sizeof(sfpath));
					strcat(cmd,sfpath);
#else
                    strcat(cmd,fpath);
#endif			
					break;
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
                case '!':   /* EXEC Directory */
                    strcat(cmd,cfg.exec_dir);
                    break;
                case '#':   /* Node number (same as SBBSNNUM environment var) */
                    sprintf(str,"%d",cfg.node_num);
                    strcat(cmd,str);
                    break;
                case '*':
                    sprintf(str,"%03d",cfg.node_num);
                    strcat(cmd,str);
                    break;
                case '$':   /* Credits */
                    strcat(cmd,ultoa(useron.cdt+useron.freecdt,str,10));
                    break;
                case '%':   /* %% for percent sign */
                    strcat(cmd,"%");
                    break;
959
960
961
962
				case '?':	/* Platform */
#ifdef __OS2__
					strcpy(str,"OS2");
#else
963
					strcpy(str,PLATFORM_DESC);
964
965
966
967
#endif
					strlwr(str);
					strcat(cmd,str);
					break;
968
969
970
971
972
973
974
975
976
977
978
979
980
                default:    /* unknown specification */
                    if(isdigit(instr[i])) {
                        sprintf(str,"%0*d",instr[i]&0xf,useron.number);
                        strcat(cmd,str); }
                    break; }
            j=strlen(cmd); }
        else
            cmd[j++]=instr[i]; }
    cmd[j]=0;

    return(cmd);
}