cdcontrol.c revision 99800 
1/*
2 * Compact Disc Control Utility by Serge V. Vakulenko <vak@cronyx.ru>.
3 * Based on the non-X based CD player by Jean-Marc Zucconi and
4 * Andrey A. Chernov.
5 *
6 * Fixed and further modified on 5-Sep-1995 by Jukka Ukkonen <jau@funet.fi>.
7 *
8 * 11-Sep-1995: Jukka A. Ukkonen <jau@funet.fi>
9 *              A couple of further fixes to my own earlier "fixes".
10 *
11 * 18-Sep-1995: Jukka A. Ukkonen <jau@funet.fi>
12 *              Added an ability to specify addresses relative to the
13 *              beginning of a track. This is in fact a variation of
14 *              doing the simple play_msf() call.
15 *
16 * 11-Oct-1995: Serge V.Vakulenko <vak@cronyx.ru>
17 *              New eject algorithm.
18 *              Some code style reformatting.
19 */
20
21#ifndef lint
22static const char rcsid[] =
23  "$FreeBSD: head/usr.sbin/cdcontrol/cdcontrol.c 99800 2002-07-11 18:31:16Z alfred $";
24#endif /* not lint */
25
26#include <sys/cdio.h>
27#include <sys/cdrio.h>
28#include <sys/file.h>
29#include <sys/ioctl.h>
30#include <sys/param.h>
31#include <arpa/inet.h>
32#include <ctype.h>
33#include <err.h>
34#include <errno.h>
35#include <histedit.h>
36#include <limits.h>
37#include <paths.h>
38#include <stdio.h>
39#include <stdlib.h>
40#include <string.h>
41#include <unistd.h>
42#include <vis.h>
43
44#define VERSION "2.0"
45
46#define ASTS_INVALID	0x00  /* Audio status byte not valid */
47#define ASTS_PLAYING	0x11  /* Audio play operation in progress */
48#define ASTS_PAUSED	0x12  /* Audio play operation paused */
49#define ASTS_COMPLETED	0x13  /* Audio play operation successfully completed */
50#define ASTS_ERROR	0x14  /* Audio play operation stopped due to error */
51#define ASTS_VOID	0x15  /* No current audio status to return */
52
53#ifndef DEFAULT_CD_DRIVE
54#  define DEFAULT_CD_DRIVE  "/dev/cd0c"
55#endif
56
57#ifndef DEFAULT_CD_PARTITION
58#  define DEFAULT_CD_PARTITION  "c"
59#endif
60
61#define CMD_DEBUG	1
62#define CMD_EJECT	2
63#define CMD_HELP	3
64#define CMD_INFO	4
65#define CMD_PAUSE	5
66#define CMD_PLAY	6
67#define CMD_QUIT	7
68#define CMD_RESUME	8
69#define CMD_STOP	9
70#define CMD_VOLUME	10
71#define CMD_CLOSE	11
72#define CMD_RESET	12
73#define CMD_SET		13
74#define CMD_STATUS	14
75#define CMD_CDID	15
76#define CMD_NEXT	16
77#define CMD_PREVIOUS	17
78#define CMD_SPEED	18
79#define STATUS_AUDIO	0x1
80#define STATUS_MEDIA	0x2
81#define STATUS_VOLUME	0x4
82
83struct cmdtab {
84	int command;
85	const char *name;
86	unsigned min;
87	const char *args;
88} cmdtab[] = {
89{ CMD_CLOSE,	"close",	1, "" },
90{ CMD_DEBUG,	"debug",	1, "on | off" },
91{ CMD_EJECT,	"eject",	1, "" },
92{ CMD_HELP,	"?",		1, 0 },
93{ CMD_HELP,	"help",		1, "" },
94{ CMD_INFO,	"info",		1, "" },
95{ CMD_NEXT,	"next",		1, "" },
96{ CMD_PAUSE,	"pause",	2, "" },
97{ CMD_PLAY,	"play",		1, "min1:sec1[.fram1] [min2:sec2[.fram2]]" },
98{ CMD_PLAY,	"play",		1, "track1[.index1] [track2[.index2]]" },
99{ CMD_PLAY,	"play",		1, "tr1 m1:s1[.f1] [[tr2] [m2:s2[.f2]]]" },
100{ CMD_PLAY,	"play",		1, "[#block [len]]" },
101{ CMD_PREVIOUS,	"previous",	2, "" },
102{ CMD_QUIT,	"quit",		1, "" },
103{ CMD_RESET,	"reset",	4, "" },
104{ CMD_RESUME,	"resume",	1, "" },
105{ CMD_SET,	"set",		2, "msf | lba" },
106{ CMD_STATUS,	"status",	1, "[audio | media | volume]" },
107{ CMD_STOP,	"stop",		3, "" },
108{ CMD_VOLUME,	"volume",	1,
109      "<l> <r> | left | right | mute | mono | stereo" },
110{ CMD_CDID,	"cdid",		2, "" },
111{ CMD_SPEED,	"speed",	2, "speed" },
112{ 0,		NULL,		0, NULL }
113};
114
115struct cd_toc_entry	toc_buffer[100];
116
117const char	*cdname;
118int		fd = -1;
119int		verbose = 1;
120int		msf = 1;
121
122int		 setvol(int, int);
123int		 read_toc_entrys(int);
124int		 play_msf(int, int, int, int, int, int);
125int		 play_track(int, int, int, int);
126int		 get_vol(int *, int *);
127int		 status(int *, int *, int *, int *);
128int		 open_cd(void);
129int		 next_prev(char *arg, int);
130int		 play(char *arg);
131int		 info(char *arg);
132int		 cdid(void);
133int		 pstatus(char *arg);
134char		*input(int *);
135void		 prtrack(struct cd_toc_entry *e, int lastflag);
136void		 lba2msf(unsigned long lba, u_char *m, u_char *s, u_char *f);
137unsigned int	 msf2lba(u_char m, u_char s, u_char f);
138int		 play_blocks(int blk, int len);
139int		 run(int cmd, char *arg);
140char		*parse(char *buf, int *cmd);
141void		 help(void);
142void		 usage(void);
143char		*use_cdrom_instead(const char *);
144__const char	*strstatus(int);
145static u_int	 dbprog_discid(void);
146__const char	*cdcontrol_prompt(void);
147
148void help ()
149{
150	struct cmdtab *c;
151	const char *s;
152	char n;
153	int i;
154
155	for (c=cmdtab; c->name; ++c) {
156		if (! c->args)
157			continue;
158		printf("\t");
159		for (i = c->min, s = c->name; *s; s++, i--) {
160			if (i > 0)
161				n = toupper(*s);
162			else
163				n = *s;
164			putchar(n);
165		}
166		if (*c->args)
167			printf (" %s", c->args);
168		printf ("\n");
169	}
170	printf ("\n\tThe word \"play\" is not required for the play commands.\n");
171	printf ("\tThe plain target address is taken as a synonym for play.\n");
172}
173
174void usage ()
175{
176	fprintf (stderr, "usage: cdcontrol [-sv] [-f device] [command ...]\n");
177	exit (1);
178}
179
180char *use_cdrom_instead(const char *old_envvar)
181{
182	char *device;
183
184	device = getenv(old_envvar);
185	if (device)
186		warnx("%s environment variable deprecated, "
187		    "please use CDROM in the future.", old_envvar);
188	return device;
189}
190
191
192int main (int argc, char **argv)
193{
194	int cmd;
195	char *arg;
196
197	for (;;) {
198		switch (getopt (argc, argv, "svhf:")) {
199		case EOF:
200			break;
201		case 's':
202			verbose = 0;
203			continue;
204		case 'v':
205			verbose = 2;
206			continue;
207		case 'f':
208			cdname = optarg;
209			continue;
210		case 'h':
211		default:
212			usage ();
213		}
214		break;
215	}
216	argc -= optind;
217	argv += optind;
218
219	if (argc > 0 && ! strcasecmp (*argv, "help"))
220		usage ();
221
222	if (! cdname) {
223		cdname = getenv("CDROM");
224	}
225
226	if (! cdname)
227		cdname = use_cdrom_instead("MUSIC_CD");
228	if (! cdname)
229		cdname = use_cdrom_instead("CD_DRIVE");
230	if (! cdname)
231		cdname = use_cdrom_instead("DISC");
232	if (! cdname)
233		cdname = use_cdrom_instead("CDPLAY");
234
235	if (! cdname) {
236		cdname = DEFAULT_CD_DRIVE;
237		warnx("no CD device name specified, defaulting to %s", cdname);
238	}
239
240	if (argc > 0) {
241		char buf[80], *p;
242		int len;
243
244		for (p=buf; argc-->0; ++argv) {
245			len = strlen (*argv);
246
247			if (p + len >= buf + sizeof (buf) - 1)
248				usage ();
249
250			if (p > buf)
251				*p++ = ' ';
252
253			strcpy (p, *argv);
254			p += len;
255		}
256		*p = 0;
257		arg = parse (buf, &cmd);
258		return (run (cmd, arg));
259	}
260
261	if (verbose == 1)
262		verbose = isatty (0);
263
264	if (verbose) {
265		printf ("Compact Disc Control utility, version %s\n", VERSION);
266		printf ("Type `?' for command list\n\n");
267	}
268
269	for (;;) {
270		arg = input (&cmd);
271		if (run (cmd, arg) < 0) {
272			if (verbose)
273				warn(NULL);
274			close (fd);
275			fd = -1;
276		}
277		fflush (stdout);
278	}
279}
280
281int run (int cmd, char *arg)
282{
283	long speed;
284	int l, r, rc;
285	char *ep;
286
287	switch (cmd) {
288
289	case CMD_QUIT:
290		exit (0);
291
292	case CMD_INFO:
293		if (fd < 0 && ! open_cd ())
294			return (0);
295
296		return info (arg);
297
298	case CMD_CDID:
299		if (fd < 0 && ! open_cd ())
300			return (0);
301
302		return cdid ();
303
304	case CMD_STATUS:
305		if (fd < 0 && ! open_cd ())
306			return (0);
307
308		return pstatus (arg);
309
310	case CMD_NEXT:
311	case CMD_PREVIOUS:
312		if (fd < 0 && ! open_cd ())
313			return (0);
314
315		while (isspace (*arg))
316			arg++;
317
318		return next_prev (arg, cmd);
319
320	case CMD_PAUSE:
321		if (fd < 0 && ! open_cd ())
322			return (0);
323
324		return ioctl (fd, CDIOCPAUSE);
325
326	case CMD_RESUME:
327		if (fd < 0 && ! open_cd ())
328			return (0);
329
330		return ioctl (fd, CDIOCRESUME);
331
332	case CMD_STOP:
333		if (fd < 0 && ! open_cd ())
334			return (0);
335
336		rc = ioctl (fd, CDIOCSTOP);
337
338		(void) ioctl (fd, CDIOCALLOW);
339
340		return (rc);
341
342	case CMD_RESET:
343		if (fd < 0 && ! open_cd ())
344			return (0);
345
346		rc = ioctl (fd, CDIOCRESET);
347		if (rc < 0)
348			return rc;
349		close(fd);
350		fd = -1;
351		return (0);
352
353	case CMD_DEBUG:
354		if (fd < 0 && ! open_cd ())
355			return (0);
356
357		if (! strcasecmp (arg, "on"))
358			return ioctl (fd, CDIOCSETDEBUG);
359
360		if (! strcasecmp (arg, "off"))
361			return ioctl (fd, CDIOCCLRDEBUG);
362
363		warnx("invalid command arguments");
364
365		return (0);
366
367	case CMD_EJECT:
368		if (fd < 0 && ! open_cd ())
369			return (0);
370
371		(void) ioctl (fd, CDIOCALLOW);
372		rc = ioctl (fd, CDIOCEJECT);
373		if (rc < 0)
374			return (rc);
375		return (0);
376
377	case CMD_CLOSE:
378		if (fd < 0 && ! open_cd ())
379			return (0);
380
381		(void) ioctl (fd, CDIOCALLOW);
382		rc = ioctl (fd, CDIOCCLOSE);
383		if (rc < 0)
384			return (rc);
385		close(fd);
386		fd = -1;
387		return (0);
388
389	case CMD_PLAY:
390		if (fd < 0 && ! open_cd ())
391			return (0);
392
393		while (isspace (*arg))
394			arg++;
395
396		return play (arg);
397
398	case CMD_SET:
399		if (! strcasecmp (arg, "msf"))
400			msf = 1;
401		else if (! strcasecmp (arg, "lba"))
402			msf = 0;
403		else
404			warnx("invalid command arguments");
405		return (0);
406
407	case CMD_VOLUME:
408		if (fd < 0 && !open_cd ())
409			return (0);
410
411		if (! strncasecmp (arg, "left", strlen(arg)))
412			return ioctl (fd, CDIOCSETLEFT);
413
414		if (! strncasecmp (arg, "right", strlen(arg)))
415			return ioctl (fd, CDIOCSETRIGHT);
416
417		if (! strncasecmp (arg, "mono", strlen(arg)))
418			return ioctl (fd, CDIOCSETMONO);
419
420		if (! strncasecmp (arg, "stereo", strlen(arg)))
421			return ioctl (fd, CDIOCSETSTERIO);
422
423		if (! strncasecmp (arg, "mute", strlen(arg)))
424			return ioctl (fd, CDIOCSETMUTE);
425
426		if (2 != sscanf (arg, "%d %d", &l, &r)) {
427			warnx("invalid command arguments");
428			return (0);
429		}
430
431		return setvol (l, r);
432
433	case CMD_SPEED:
434		if (fd < 0 && ! open_cd ())
435			return (0);
436
437		errno = 0;
438		speed = strtol(arg, &ep, 10);
439		if (*ep || ep == arg || speed <= 0 || speed > INT_MAX ||
440		    errno != 0) {
441			warnx("invalid command arguments %s", arg);
442			return (0);
443		}
444		return ioctl(fd, CDRIOCREADSPEED, &speed);
445
446	default:
447	case CMD_HELP:
448		help ();
449		return (0);
450
451	}
452}
453
454int play (char *arg)
455{
456	struct ioc_toc_header h;
457	unsigned int n;
458	int rc, start, end = 0, istart = 1, iend = 1;
459
460	rc = ioctl (fd, CDIOREADTOCHEADER, &h);
461
462	if (rc < 0)
463		return (rc);
464
465	n = h.ending_track - h.starting_track + 1;
466	rc = read_toc_entrys ((n + 1) * sizeof (struct cd_toc_entry));
467
468	if (rc < 0)
469		return (rc);
470
471	if (! arg || ! *arg) {
472		/* Play the whole disc */
473		if (msf)
474			return play_blocks (0, msf2lba (toc_buffer[n].addr.msf.minute,
475							toc_buffer[n].addr.msf.second,
476							toc_buffer[n].addr.msf.frame));
477		else
478			return play_blocks (0, ntohl(toc_buffer[n].addr.lba));
479	}
480
481	if (strchr (arg, '#')) {
482		/* Play block #blk [ len ] */
483		int blk, len = 0;
484
485		if (2 != sscanf (arg, "#%d%d", &blk, &len) &&
486		    1 != sscanf (arg, "#%d", &blk))
487			goto Clean_up;
488
489		if (len == 0) {
490			if (msf)
491				len = msf2lba (toc_buffer[n].addr.msf.minute,
492					       toc_buffer[n].addr.msf.second,
493					       toc_buffer[n].addr.msf.frame) - blk;
494			else
495				len = ntohl(toc_buffer[n].addr.lba) - blk;
496		}
497		return play_blocks (blk, len);
498	}
499
500	if (strchr (arg, ':')) {
501		/*
502		 * Play MSF m1:s1 [ .f1 ] [ m2:s2 [ .f2 ] ]
503		 *
504		 * Will now also undestand timed addresses relative
505		 * to the beginning of a track in the form...
506		 *
507		 *      tr1 m1:s1[.f1] [[tr2] [m2:s2[.f2]]]
508		 */
509		unsigned tr1, tr2;
510		unsigned m1, m2, s1, s2, f1, f2;
511		unsigned char tm, ts, tf;
512
513		tr2 = m2 = s2 = f2 = f1 = 0;
514		if (8 == sscanf (arg, "%d %d:%d.%d %d %d:%d.%d",
515		    &tr1, &m1, &s1, &f1, &tr2, &m2, &s2, &f2))
516			goto Play_Relative_Addresses;
517
518		tr2 = m2 = s2 = f2 = f1 = 0;
519		if (7 == sscanf (arg, "%d %d:%d %d %d:%d.%d",
520		    &tr1, &m1, &s1, &tr2, &m2, &s2, &f2))
521			goto Play_Relative_Addresses;
522
523		tr2 = m2 = s2 = f2 = f1 = 0;
524		if (7 == sscanf (arg, "%d %d:%d.%d %d %d:%d",
525		    &tr1, &m1, &s1, &f1, &tr2, &m2, &s2))
526			goto Play_Relative_Addresses;
527
528		tr2 = m2 = s2 = f2 = f1 = 0;
529		if (7 == sscanf (arg, "%d %d:%d.%d %d:%d.%d",
530		    &tr1, &m1, &s1, &f1, &m2, &s2, &f2))
531			goto Play_Relative_Addresses;
532
533		tr2 = m2 = s2 = f2 = f1 = 0;
534		if (6 == sscanf (arg, "%d %d:%d.%d %d:%d",
535		    &tr1, &m1, &s1, &f1, &m2, &s2))
536			goto Play_Relative_Addresses;
537
538		tr2 = m2 = s2 = f2 = f1 = 0;
539		if (6 == sscanf (arg, "%d %d:%d %d:%d.%d",
540		    &tr1, &m1, &s1, &m2, &s2, &f2))
541			goto Play_Relative_Addresses;
542
543		tr2 = m2 = s2 = f2 = f1 = 0;
544		if (6 == sscanf (arg, "%d %d:%d.%d %d %d",
545		    &tr1, &m1, &s1, &f1, &tr2, &m2))
546			goto Play_Relative_Addresses;
547
548		tr2 = m2 = s2 = f2 = f1 = 0;
549		if (5 == sscanf (arg, "%d %d:%d %d:%d", &tr1, &m1, &s1, &m2, &s2))
550			goto Play_Relative_Addresses;
551
552		tr2 = m2 = s2 = f2 = f1 = 0;
553		if (5 == sscanf (arg, "%d %d:%d %d %d",
554		    &tr1, &m1, &s1, &tr2, &m2))
555			goto Play_Relative_Addresses;
556
557		tr2 = m2 = s2 = f2 = f1 = 0;
558		if (5 == sscanf (arg, "%d %d:%d.%d %d",
559		    &tr1, &m1, &s1, &f1, &tr2))
560			goto Play_Relative_Addresses;
561
562		tr2 = m2 = s2 = f2 = f1 = 0;
563		if (4 == sscanf (arg, "%d %d:%d %d", &tr1, &m1, &s1, &tr2))
564			goto Play_Relative_Addresses;
565
566		tr2 = m2 = s2 = f2 = f1 = 0;
567		if (4 == sscanf (arg, "%d %d:%d.%d", &tr1, &m1, &s1, &f1))
568			goto Play_Relative_Addresses;
569
570		tr2 = m2 = s2 = f2 = f1 = 0;
571		if (3 == sscanf (arg, "%d %d:%d", &tr1, &m1, &s1))
572			goto Play_Relative_Addresses;
573
574		tr2 = m2 = s2 = f2 = f1 = 0;
575		goto Try_Absolute_Timed_Addresses;
576
577Play_Relative_Addresses:
578		if (! tr1)
579			tr1 = 1;
580		else if (tr1 > n)
581			tr1 = n;
582
583		if (msf) {
584			tm = toc_buffer[tr1].addr.msf.minute;
585			ts = toc_buffer[tr1].addr.msf.second;
586			tf = toc_buffer[tr1].addr.msf.frame;
587		} else
588			lba2msf(ntohl(toc_buffer[tr1].addr.lba),
589				&tm, &ts, &tf);
590		if ((m1 > tm)
591		    || ((m1 == tm)
592		    && ((s1 > ts)
593		    || ((s1 == ts)
594		    && (f1 > tf))))) {
595			printf ("Track %d is not that long.\n", tr1);
596			return (0);
597		}
598
599		tr1--;
600
601		f1 += tf;
602		if (f1 >= 75) {
603			s1 += f1 / 75;
604			f1 %= 75;
605		}
606
607		s1 += ts;
608		if (s1 >= 60) {
609			m1 += s1 / 60;
610			s1 %= 60;
611		}
612
613		m1 += tm;
614
615		if (! tr2) {
616			if (m2 || s2 || f2) {
617				tr2 = tr1;
618				f2 += f1;
619				if (f2 >= 75) {
620					s2 += f2 / 75;
621					f2 %= 75;
622				}
623
624				s2 += s1;
625				if (s2 > 60) {
626					m2 += s2 / 60;
627					s2 %= 60;
628				}
629
630				m2 += m1;
631			} else {
632				tr2 = n;
633				if (msf) {
634					m2 = toc_buffer[n].addr.msf.minute;
635					s2 = toc_buffer[n].addr.msf.second;
636					f2 = toc_buffer[n].addr.msf.frame;
637				} else {
638					lba2msf(ntohl(toc_buffer[n].addr.lba),
639						&tm, &ts, &tf);
640					m2 = tm;
641					s2 = ts;
642					f2 = tf;
643				}
644			}
645		} else if (tr2 > n) {
646			tr2 = n;
647			m2 = s2 = f2 = 0;
648		} else {
649			if (m2 || s2 || f2)
650				tr2--;
651			if (msf) {
652				tm = toc_buffer[tr2].addr.msf.minute;
653				ts = toc_buffer[tr2].addr.msf.second;
654				tf = toc_buffer[tr2].addr.msf.frame;
655			} else
656				lba2msf(ntohl(toc_buffer[tr2].addr.lba),
657					&tm, &ts, &tf);
658			f2 += tf;
659			if (f2 >= 75) {
660				s2 += f2 / 75;
661				f2 %= 75;
662			}
663
664			s2 += ts;
665			if (s2 > 60) {
666				m2 += s2 / 60;
667				s2 %= 60;
668			}
669
670			m2 += tm;
671		}
672
673		if (msf) {
674			tm = toc_buffer[n].addr.msf.minute;
675			ts = toc_buffer[n].addr.msf.second;
676			tf = toc_buffer[n].addr.msf.frame;
677		} else
678			lba2msf(ntohl(toc_buffer[n].addr.lba),
679				&tm, &ts, &tf);
680		if ((tr2 < n)
681		    && ((m2 > tm)
682		    || ((m2 == tm)
683		    && ((s2 > ts)
684		    || ((s2 == ts)
685		    && (f2 > tf)))))) {
686			printf ("The playing time of the disc is not that long.\n");
687			return (0);
688		}
689		return (play_msf (m1, s1, f1, m2, s2, f2));
690
691Try_Absolute_Timed_Addresses:
692		if (6 != sscanf (arg, "%d:%d.%d%d:%d.%d",
693			&m1, &s1, &f1, &m2, &s2, &f2) &&
694		    5 != sscanf (arg, "%d:%d.%d%d:%d", &m1, &s1, &f1, &m2, &s2) &&
695		    5 != sscanf (arg, "%d:%d%d:%d.%d", &m1, &s1, &m2, &s2, &f2) &&
696		    3 != sscanf (arg, "%d:%d.%d", &m1, &s1, &f1) &&
697		    4 != sscanf (arg, "%d:%d%d:%d", &m1, &s1, &m2, &s2) &&
698		    2 != sscanf (arg, "%d:%d", &m1, &s1))
699			goto Clean_up;
700
701		if (m2 == 0) {
702			if (msf) {
703				m2 = toc_buffer[n].addr.msf.minute;
704				s2 = toc_buffer[n].addr.msf.second;
705				f2 = toc_buffer[n].addr.msf.frame;
706			} else {
707				lba2msf(ntohl(toc_buffer[n].addr.lba),
708					&tm, &ts, &tf);
709				m2 = tm;
710				s2 = ts;
711				f2 = tf;
712			}
713		}
714		return play_msf (m1, s1, f1, m2, s2, f2);
715	}
716
717	/*
718	 * Play track trk1 [ .idx1 ] [ trk2 [ .idx2 ] ]
719	 */
720	if (4 != sscanf (arg, "%d.%d%d.%d", &start, &istart, &end, &iend) &&
721	    3 != sscanf (arg, "%d.%d%d", &start, &istart, &end) &&
722	    3 != sscanf (arg, "%d%d.%d", &start, &end, &iend) &&
723	    2 != sscanf (arg, "%d.%d", &start, &istart) &&
724	    2 != sscanf (arg, "%d%d", &start, &end) &&
725	    1 != sscanf (arg, "%d", &start))
726		goto Clean_up;
727
728	if (end == 0)
729		end = n;
730	return (play_track (start, istart, end, iend));
731
732Clean_up:
733	warnx("invalid command arguments");
734	return (0);
735}
736
737int next_prev (char *arg, int cmd)
738{
739	struct ioc_toc_header h;
740	int dir, junk, n, off, rc, trk;
741
742	dir = (cmd == CMD_NEXT) ? 1 : -1;
743	rc = ioctl (fd, CDIOREADTOCHEADER, &h);
744	if (rc < 0)
745		return (rc);
746
747	n = h.ending_track - h.starting_track + 1;
748	rc = status (&trk, &junk, &junk, &junk);
749	if (rc < 0)
750		return (-1);
751
752	if (arg && *arg) {
753		if (sscanf (arg, "%u", &off) != 1) {
754		    warnx("invalid command argument");
755		    return (0);
756		} else
757		    trk += off * dir;
758	} else
759		trk += dir;
760
761	if (trk > h.ending_track)
762		trk = 1;
763
764	return (play_track (trk, 1, n, 1));
765}
766
767const char *strstatus (int sts)
768{
769	switch (sts) {
770	case ASTS_INVALID:	return ("invalid");
771	case ASTS_PLAYING:	return ("playing");
772	case ASTS_PAUSED:	return ("paused");
773	case ASTS_COMPLETED:	return ("completed");
774	case ASTS_ERROR:	return ("error");
775	case ASTS_VOID:		return ("void");
776	default:		return ("??");
777	}
778}
779
780int pstatus (char *arg)
781{
782	struct ioc_vol v;
783	struct ioc_read_subchannel ss;
784	struct cd_sub_channel_info data;
785	int rc, trk, m, s, f;
786	int what = 0;
787	char *p, vmcn[(4 * 15) + 1];
788
789	while ((p = strtok(arg, " \t"))) {
790	    arg = 0;
791	    if (!strncasecmp(p, "audio", strlen(p)))
792		what |= STATUS_AUDIO;
793	    else if (!strncasecmp(p, "media", strlen(p)))
794		what |= STATUS_MEDIA;
795	    else if (!strncasecmp(p, "volume", strlen(p)))
796		what |= STATUS_VOLUME;
797	    else {
798		warnx("invalid command arguments");
799		return 0;
800	    }
801	}
802	if (!what)
803	    what = STATUS_AUDIO|STATUS_MEDIA|STATUS_VOLUME;
804	if (what & STATUS_AUDIO) {
805	    rc = status (&trk, &m, &s, &f);
806	    if (rc >= 0)
807		if (verbose)
808		    printf ("Audio status = %d<%s>, current track = %d, current position = %d:%02d.%02d\n",
809			    rc, strstatus (rc), trk, m, s, f);
810		else
811		    printf ("%d %d %d:%02d.%02d\n", rc, trk, m, s, f);
812	    else
813		printf ("No current status info available\n");
814	}
815	if (what & STATUS_MEDIA) {
816	    bzero (&ss, sizeof (ss));
817	    ss.data = &data;
818	    ss.data_len = sizeof (data);
819	    ss.address_format = msf ? CD_MSF_FORMAT : CD_LBA_FORMAT;
820	    ss.data_format = CD_MEDIA_CATALOG;
821	    rc = ioctl (fd, CDIOCREADSUBCHANNEL, (char *) &ss);
822	    if (rc >= 0) {
823		printf("Media catalog is %sactive",
824		    ss.data->what.media_catalog.mc_valid ? "": "in");
825		if (ss.data->what.media_catalog.mc_valid &&
826		    ss.data->what.media_catalog.mc_number[0])
827		{
828		    strvisx (vmcn, ss.data->what.media_catalog.mc_number,
829			    (sizeof (vmcn) - 1) / 4, VIS_OCTAL | VIS_NL);
830		    printf(", number \"%.*s\"", (int)sizeof (vmcn), vmcn);
831		}
832		putchar('\n');
833	    } else
834		printf("No media catalog info available\n");
835	}
836	if (what & STATUS_VOLUME) {
837	    rc = ioctl (fd, CDIOCGETVOL, &v);
838	    if (rc >= 0)
839		if (verbose)
840		    printf ("Left volume = %d, right volume = %d\n",
841			    v.vol[0], v.vol[1]);
842		else
843		    printf ("%d %d\n", v.vol[0], v.vol[1]);
844	    else
845		printf ("No volume level info available\n");
846	}
847	return(0);
848}
849
850/*
851 * dbprog_sum
852 *	Convert an integer to its text string representation, and
853 *	compute its checksum.  Used by dbprog_discid to derive the
854 *	disc ID.
855 *
856 * Args:
857 *	n - The integer value.
858 *
859 * Return:
860 *	The integer checksum.
861 */
862static int
863dbprog_sum(int n)
864{
865	char	buf[12],
866		*p;
867	int	ret = 0;
868
869	/* For backward compatibility this algorithm must not change */
870	sprintf(buf, "%u", n);
871	for (p = buf; *p != '\0'; p++)
872		ret += (*p - '0');
873
874	return(ret);
875}
876
877
878/*
879 * dbprog_discid
880 *	Compute a magic disc ID based on the number of tracks,
881 *	the length of each track, and a checksum of the string
882 *	that represents the offset of each track.
883 *
884 * Args:
885 *	s - Pointer to the curstat_t structure.
886 *
887 * Return:
888 *	The integer disc ID.
889 */
890static u_int
891dbprog_discid()
892{
893	struct	ioc_toc_header h;
894	int	rc;
895	int	i, ntr,
896		t = 0,
897		n = 0;
898
899	rc = ioctl (fd, CDIOREADTOCHEADER, &h);
900	if (rc < 0)
901		return 0;
902	ntr = h.ending_track - h.starting_track + 1;
903	i = msf;
904	msf = 1;
905	rc = read_toc_entrys ((ntr + 1) * sizeof (struct cd_toc_entry));
906	msf = i;
907	if (rc < 0)
908		return 0;
909	/* For backward compatibility this algorithm must not change */
910	for (i = 0; i < ntr; i++) {
911#define TC_MM(a) toc_buffer[a].addr.msf.minute
912#define TC_SS(a) toc_buffer[a].addr.msf.second
913		n += dbprog_sum((TC_MM(i) * 60) + TC_SS(i));
914
915		t += ((TC_MM(i+1) * 60) + TC_SS(i+1)) -
916		    ((TC_MM(i) * 60) + TC_SS(i));
917	}
918
919	return((n % 0xff) << 24 | t << 8 | ntr);
920}
921
922int cdid ()
923{
924	u_int	id;
925
926	id = dbprog_discid();
927	if (id)
928	{
929		if (verbose)
930			printf ("CDID=");
931		printf ("%08x\n",id);
932	}
933	return id ? 0 : 1;
934}
935
936int info (char *arg __unused)
937{
938	struct ioc_toc_header h;
939	int rc, i, n;
940
941	rc = ioctl (fd, CDIOREADTOCHEADER, &h);
942	if (rc >= 0) {
943		if (verbose)
944			printf ("Starting track = %d, ending track = %d, TOC size = %d bytes\n",
945				h.starting_track, h.ending_track, h.len);
946		else
947			printf ("%d %d %d\n", h.starting_track,
948				h.ending_track, h.len);
949	} else {
950		warn("getting toc header");
951		return (rc);
952	}
953
954	n = h.ending_track - h.starting_track + 1;
955	rc = read_toc_entrys ((n + 1) * sizeof (struct cd_toc_entry));
956	if (rc < 0)
957		return (rc);
958
959	if (verbose) {
960		printf ("track     start  duration   block  length   type\n");
961		printf ("-------------------------------------------------\n");
962	}
963
964	for (i = 0; i < n; i++) {
965		printf ("%5d  ", toc_buffer[i].track);
966		prtrack (toc_buffer + i, 0);
967	}
968	printf ("%5d  ", toc_buffer[n].track);
969	prtrack (toc_buffer + n, 1);
970	return (0);
971}
972
973void lba2msf (unsigned long lba, u_char *m, u_char *s, u_char *f)
974{
975	lba += 150;			/* block start offset */
976	lba &= 0xffffff;		/* negative lbas use only 24 bits */
977	*m = lba / (60 * 75);
978	lba %= (60 * 75);
979	*s = lba / 75;
980	*f = lba % 75;
981}
982
983unsigned int msf2lba (u_char m, u_char s, u_char f)
984{
985	return (((m * 60) + s) * 75 + f) - 150;
986}
987
988void prtrack (struct cd_toc_entry *e, int lastflag)
989{
990	int block, next, len;
991	u_char m, s, f;
992
993	if (msf) {
994		/* Print track start */
995		printf ("%2d:%02d.%02d  ", e->addr.msf.minute,
996			e->addr.msf.second, e->addr.msf.frame);
997
998		block = msf2lba (e->addr.msf.minute, e->addr.msf.second,
999			e->addr.msf.frame);
1000	} else {
1001		block = ntohl(e->addr.lba);
1002		lba2msf(block, &m, &s, &f);
1003		/* Print track start */
1004		printf ("%2d:%02d.%02d  ", m, s, f);
1005	}
1006	if (lastflag) {
1007		/* Last track -- print block */
1008		printf ("       -  %6d       -      -\n", block);
1009		return;
1010	}
1011
1012	if (msf)
1013		next = msf2lba (e[1].addr.msf.minute, e[1].addr.msf.second,
1014			e[1].addr.msf.frame);
1015	else
1016		next = ntohl(e[1].addr.lba);
1017	len = next - block;
1018	lba2msf (len, &m, &s, &f);
1019
1020	/* Print duration, block, length, type */
1021	printf ("%2d:%02d.%02d  %6d  %6d  %5s\n", m, s, f, block, len,
1022		(e->control & 4) ? "data" : "audio");
1023}
1024
1025int play_track (int tstart, int istart, int tend, int iend)
1026{
1027	struct ioc_play_track t;
1028
1029	t.start_track = tstart;
1030	t.start_index = istart;
1031	t.end_track = tend;
1032	t.end_index = iend;
1033
1034	return ioctl (fd, CDIOCPLAYTRACKS, &t);
1035}
1036
1037int play_blocks (int blk, int len)
1038{
1039	struct ioc_play_blocks  t;
1040
1041	t.blk = blk;
1042	t.len = len;
1043
1044	return ioctl (fd, CDIOCPLAYBLOCKS, &t);
1045}
1046
1047int setvol (int left, int right)
1048{
1049	struct ioc_vol  v;
1050
1051	v.vol[0] = left;
1052	v.vol[1] = right;
1053	v.vol[2] = 0;
1054	v.vol[3] = 0;
1055
1056	return ioctl (fd, CDIOCSETVOL, &v);
1057}
1058
1059int read_toc_entrys (int len)
1060{
1061	struct ioc_read_toc_entry t;
1062
1063	t.address_format = msf ? CD_MSF_FORMAT : CD_LBA_FORMAT;
1064	t.starting_track = 0;
1065	t.data_len = len;
1066	t.data = toc_buffer;
1067
1068	return (ioctl (fd, CDIOREADTOCENTRYS, (char *) &t));
1069}
1070
1071int play_msf (int start_m, int start_s, int start_f,
1072	int end_m, int end_s, int end_f)
1073{
1074	struct ioc_play_msf a;
1075
1076	a.start_m = start_m;
1077	a.start_s = start_s;
1078	a.start_f = start_f;
1079	a.end_m = end_m;
1080	a.end_s = end_s;
1081	a.end_f = end_f;
1082
1083	return ioctl (fd, CDIOCPLAYMSF, (char *) &a);
1084}
1085
1086int status (int *trk, int *min, int *sec, int *frame)
1087{
1088	struct ioc_read_subchannel s;
1089	struct cd_sub_channel_info data;
1090	u_char mm, ss, ff;
1091
1092	bzero (&s, sizeof (s));
1093	s.data = &data;
1094	s.data_len = sizeof (data);
1095	s.address_format = msf ? CD_MSF_FORMAT : CD_LBA_FORMAT;
1096	s.data_format = CD_CURRENT_POSITION;
1097
1098	if (ioctl (fd, CDIOCREADSUBCHANNEL, (char *) &s) < 0)
1099		return -1;
1100
1101	*trk = s.data->what.position.track_number;
1102	if (msf) {
1103		*min = s.data->what.position.reladdr.msf.minute;
1104		*sec = s.data->what.position.reladdr.msf.second;
1105		*frame = s.data->what.position.reladdr.msf.frame;
1106	} else {
1107		lba2msf(ntohl(s.data->what.position.reladdr.lba),
1108			&mm, &ss, &ff);
1109		*min = mm;
1110		*sec = ss;
1111		*frame = ff;
1112	}
1113
1114	return s.data->header.audio_status;
1115}
1116
1117const char *
1118cdcontrol_prompt()
1119{
1120	return ("cdcontrol> ");
1121}
1122
1123char *
1124input (int *cmd)
1125{
1126#define MAXLINE 80
1127	static EditLine *el = NULL;
1128	static History *hist = NULL;
1129	HistEvent he;
1130	static char buf[MAXLINE];
1131	int num = 0;
1132	int len;
1133	const char *bp = NULL;
1134	char *p;
1135
1136	do {
1137		if (verbose) {
1138			if (!el) {
1139				el = el_init("cdcontrol", stdin, stdout,
1140				    stderr);
1141				hist = history_init();
1142				history(hist, &he, H_EVENT, 100);
1143				el_set(el, EL_HIST, history, hist);
1144				el_set(el, EL_EDITOR, "emacs");
1145				el_set(el, EL_PROMPT, cdcontrol_prompt);
1146				el_set(el, EL_SIGNAL, 1);
1147				el_source(el, NULL);
1148			}
1149			if ((bp = el_gets(el, &num)) == NULL || num == 0) {
1150				*cmd = CMD_QUIT;
1151				fprintf (stderr, "\r\n");
1152				return (0);
1153			}
1154
1155			len = (num > MAXLINE) ? MAXLINE : num;
1156			memcpy(buf, bp, len);
1157			buf[len] = 0;
1158			history(hist, &he, H_ENTER, bp);
1159#undef MAXLINE
1160
1161		} else {
1162			if (! fgets (buf, sizeof (buf), stdin)) {
1163				*cmd = CMD_QUIT;
1164				fprintf (stderr, "\r\n");
1165				return (0);
1166			}
1167		}
1168		p = parse (buf, cmd);
1169	} while (! p);
1170	return (p);
1171}
1172
1173char *parse (char *buf, int *cmd)
1174{
1175	struct cmdtab *c;
1176	char *p;
1177	unsigned int len;
1178
1179	for (p=buf; isspace (*p); p++)
1180		continue;
1181
1182	if (isdigit (*p) || (p[0] == '#' && isdigit (p[1]))) {
1183		*cmd = CMD_PLAY;
1184		return (p);
1185	} else if (*p == '+') {
1186		*cmd = CMD_NEXT;
1187		return (p + 1);
1188	} else if (*p == '-') {
1189		*cmd = CMD_PREVIOUS;
1190		return (p + 1);
1191	}
1192
1193	for (buf = p; *p && ! isspace (*p); p++)
1194		continue;
1195
1196	len = p - buf;
1197	if (! len)
1198		return (0);
1199
1200	if (*p) {		/* It must be a spacing character! */
1201		char *q;
1202
1203		*p++ = 0;
1204		for (q=p; *q && *q != '\n' && *q != '\r'; q++)
1205			continue;
1206		*q = 0;
1207	}
1208
1209	*cmd = -1;
1210	for (c=cmdtab; c->name; ++c) {
1211		/* Is it an exact match? */
1212		if (! strcasecmp (buf, c->name)) {
1213  			*cmd = c->command;
1214  			break;
1215  		}
1216
1217		/* Try short hand forms then... */
1218		if (len >= c->min && ! strncasecmp (buf, c->name, len)) {
1219			if (*cmd != -1 && *cmd != c->command) {
1220				warnx("ambiguous command");
1221				return (0);
1222			}
1223			*cmd = c->command;
1224  		}
1225	}
1226
1227	if (*cmd == -1) {
1228		warnx("invalid command, enter ``help'' for commands");
1229		return (0);
1230	}
1231
1232	while (isspace (*p))
1233		p++;
1234	return p;
1235}
1236
1237int open_cd ()
1238{
1239	char devbuf[MAXPATHLEN];
1240
1241	if (fd > -1)
1242		return (1);
1243
1244	if (*cdname == '/') {
1245		snprintf (devbuf, MAXPATHLEN, "%s", cdname);
1246	} else {
1247		snprintf (devbuf, MAXPATHLEN, "%s%s", _PATH_DEV, cdname);
1248	}
1249
1250	fd = open (devbuf, O_RDONLY);
1251
1252	if (fd < 0 && errno == ENOENT) {
1253		strcat (devbuf, DEFAULT_CD_PARTITION);
1254		fd = open (devbuf, O_RDONLY);
1255	}
1256
1257	if (fd < 0) {
1258		if (errno == ENXIO) {
1259			/*  ENXIO has an overloaded meaning here.
1260			 *  The original "Device not configured" should
1261			 *  be interpreted as "No disc in drive %s". */
1262			warnx("no disc in drive %s", devbuf);
1263			return (0);
1264		}
1265		err(1, "%s", devbuf);
1266	}
1267	return (1);
1268}
1269