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freebsd-dev/usr.sbin/cdcontrol/cdcontrol.c
Josef Karthauser 3712337aef Fixed a potential buffer overflow problem, in the device name handling. 
PR:		bin/15101
1999-12-05 20:05:45 +00:00

1072 lines
23 KiB
C
Raw Blame History

/*
* Compact Disc Control Utility by Serge V. Vakulenko <vak@cronyx.ru>.
* Based on the non-X based CD player by Jean-Marc Zucconi and
* Andrey A. Chernov.
*
* Fixed and further modified on 5-Sep-1995 by Jukka Ukkonen <jau@funet.fi>.
*
* 11-Sep-1995: Jukka A. Ukkonen <jau@funet.fi>
* A couple of further fixes to my own earlier "fixes".
*
* 18-Sep-1995: Jukka A. Ukkonen <jau@funet.fi>
* Added an ability to specify addresses relative to the
* beginning of a track. This is in fact a variation of
* doing the simple play_msf() call.
*
* 11-Oct-1995: Serge V.Vakulenko <vak@cronyx.ru>
* New eject algorithm.
* Some code style reformatting.
*/
#ifndef lint
static const char rcsid[] =
"$FreeBSD$";
#endif /* not lint */
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/file.h>
#include <sys/cdio.h>
#include <sys/ioctl.h>
#include <sys/param.h>
#include <histedit.h>
#define VERSION "2.0"
#define ASTS_INVALID 0x00 /* Audio status byte not valid */
#define ASTS_PLAYING 0x11 /* Audio play operation in progress */
#define ASTS_PAUSED 0x12 /* Audio play operation paused */
#define ASTS_COMPLETED 0x13 /* Audio play operation successfully completed */
#define ASTS_ERROR 0x14 /* Audio play operation stopped due to error */
#define ASTS_VOID 0x15 /* No current audio status to return */
#ifndef DEFAULT_CD_DRIVE
# define DEFAULT_CD_DRIVE "/dev/cd0c"
#endif
#ifndef DEFAULT_CD_PARTITION
# define DEFAULT_CD_PARTITION "c"
#endif
#define CMD_DEBUG 1
#define CMD_EJECT 2
#define CMD_HELP 3
#define CMD_INFO 4
#define CMD_PAUSE 5
#define CMD_PLAY 6
#define CMD_QUIT 7
#define CMD_RESUME 8
#define CMD_STOP 9
#define CMD_VOLUME 10
#define CMD_CLOSE 11
#define CMD_RESET 12
#define CMD_SET 13
#define CMD_STATUS 14
#define STATUS_AUDIO 0x1
#define STATUS_MEDIA 0x2
#define STATUS_VOLUME 0x4
struct cmdtab {
int command;
char *name;
unsigned min;
char *args;
} cmdtab[] = {
{ CMD_CLOSE, "close", 1, "" },
{ CMD_DEBUG, "debug", 1, "on | off" },
{ CMD_EJECT, "eject", 1, "" },
{ CMD_HELP, "?", 1, 0 },
{ CMD_HELP, "help", 1, "" },
{ CMD_INFO, "info", 1, "" },
{ CMD_PAUSE, "pause", 2, "" },
{ CMD_PLAY, "play", 1, "min1:sec1[.fram1] [min2:sec2[.fram2]]" },
{ CMD_PLAY, "play", 1, "track1[.index1] [track2[.index2]]" },
{ CMD_PLAY, "play", 1, "tr1 m1:s1[.f1] [[tr2] [m2:s2[.f2]]]" },
{ CMD_PLAY, "play", 1, "[#block [len]]" },
{ CMD_QUIT, "quit", 1, "" },
{ CMD_RESET, "reset", 4, "" },
{ CMD_RESUME, "resume", 1, "" },
{ CMD_SET, "set", 2, "msf | lba" },
{ CMD_STATUS, "status", 1, "[audio | media | volume]" },
{ CMD_STOP, "stop", 3, "" },
{ CMD_VOLUME, "volume", 1, "<l> <r> | left | right | mute | mono | stereo" },
{ 0, }
};
struct cd_toc_entry toc_buffer[100];
const char *cdname;
int fd = -1;
int verbose = 1;
int msf = 1;
int setvol __P((int, int));
int read_toc_entrys __P((int));
int play_msf __P((int, int, int, int, int, int));
int play_track __P((int, int, int, int));
int get_vol __P((int *, int *));
int status __P((int *, int *, int *, int *));
int open_cd __P((void));
int play __P((char *arg));
int info __P((char *arg));
int pstatus __P((char *arg));
char *input __P((int *));
void prtrack __P((struct cd_toc_entry *e, int lastflag));
void lba2msf __P((unsigned long lba,
u_char *m, u_char *s, u_char *f));
unsigned int msf2lba __P((u_char m, u_char s, u_char f));
int play_blocks __P((int blk, int len));
int run __P((int cmd, char *arg));
char *parse __P((char *buf, int *cmd));
void help ()
{
struct cmdtab *c;
char *s, n;
int i;
for (c=cmdtab; c->name; ++c) {
if (! c->args)
continue;
printf("\t");
for (i = c->min, s = c->name; *s; s++, i--) {
if (i > 0)
n = toupper(*s);
else
n = *s;
putchar(n);
}
if (*c->args)
printf (" %s", c->args);
printf ("\n");
}
printf ("\n\tThe word \"play\" is not required for the play commands.\n");
printf ("\tThe plain target address is taken as a synonym for play.\n");
}
void usage ()
{
fprintf (stderr, "usage: cdcontrol [-sv] [-f device] [command ...]\n");
exit (1);
}
int main (int argc, char **argv)
{
int cmd;
char *arg;
cdname = getenv ("MUSIC_CD");
if (! cdname)
cdname = getenv ("CD_DRIVE");
if (! cdname)
cdname = getenv ("DISC");
if (! cdname)
cdname = getenv ("CDPLAY");
for (;;) {
switch (getopt (argc, argv, "svhf:")) {
case EOF:
break;
case 's':
verbose = 0;
continue;
case 'v':
verbose = 2;
continue;
case 'f':
cdname = optarg;
continue;
case 'h':
default:
usage ();
}
break;
}
argc -= optind;
argv += optind;
if (argc > 0 && ! strcasecmp (*argv, "help"))
usage ();
if (! cdname) {
cdname = DEFAULT_CD_DRIVE;
warnx("no CD device name specified, defaulting to %s", cdname);
}
if (argc > 0) {
char buf[80], *p;
int len;
for (p=buf; argc-->0; ++argv) {
len = strlen (*argv);
if (p + len >= buf + sizeof (buf) - 1)
usage ();
if (p > buf)
*p++ = ' ';
strcpy (p, *argv);
p += len;
}
*p = 0;
arg = parse (buf, &cmd);
return (run (cmd, arg));
}
if (verbose == 1)
verbose = isatty (0);
if (verbose) {
printf ("Compact Disc Control utility, version %s\n", VERSION);
printf ("Type `?' for command list\n\n");
}
for (;;) {
arg = input (&cmd);
if (run (cmd, arg) < 0) {
if (verbose)
warn(NULL);
close (fd);
fd = -1;
}
fflush (stdout);
}
}
int run (int cmd, char *arg)
{
int l, r, rc;
if (arg == NULL)
return 0;
switch (cmd) {
case CMD_QUIT:
exit (0);
case CMD_INFO:
if (fd < 0 && ! open_cd ())
return (0);
return info (arg);
case CMD_STATUS:
if (fd < 0 && ! open_cd ())
return (0);
return pstatus (arg);
case CMD_PAUSE:
if (fd < 0 && ! open_cd ())
return (0);
return ioctl (fd, CDIOCPAUSE);
case CMD_RESUME:
if (fd < 0 && ! open_cd ())
return (0);
return ioctl (fd, CDIOCRESUME);
case CMD_STOP:
if (fd < 0 && ! open_cd ())
return (0);
rc = ioctl (fd, CDIOCSTOP);
(void) ioctl (fd, CDIOCALLOW);
return (rc);
case CMD_RESET:
if (fd < 0 && ! open_cd ())
return (0);
rc = ioctl (fd, CDIOCRESET);
if (rc < 0)
return rc;
close(fd);
fd = -1;
return (0);
case CMD_DEBUG:
if (fd < 0 && ! open_cd ())
return (0);
if (! strcasecmp (arg, "on"))
return ioctl (fd, CDIOCSETDEBUG);
if (! strcasecmp (arg, "off"))
return ioctl (fd, CDIOCCLRDEBUG);
warnx("invalid command arguments");
return (0);
case CMD_EJECT:
if (fd < 0 && ! open_cd ())
return (0);
(void) ioctl (fd, CDIOCALLOW);
rc = ioctl (fd, CDIOCEJECT);
if (rc < 0)
return (rc);
return (0);
case CMD_CLOSE:
if (fd < 0 && ! open_cd ())
return (0);
(void) ioctl (fd, CDIOCALLOW);
rc = ioctl (fd, CDIOCCLOSE);
if (rc < 0)
return (rc);
close(fd);
fd = -1;
return (0);
case CMD_PLAY:
if (fd < 0 && ! open_cd ())
return (0);
while (isspace (*arg))
arg++;
return play (arg);
case CMD_SET:
if (! strcasecmp (arg, "msf"))
msf = 1;
else if (! strcasecmp (arg, "lba"))
msf = 0;
else
warnx("invalid command arguments");
return (0);
case CMD_VOLUME:
if (fd < 0 && !open_cd ())
return (0);
if (! strncasecmp (arg, "left", strlen(arg)))
return ioctl (fd, CDIOCSETLEFT);
if (! strncasecmp (arg, "right", strlen(arg)))
return ioctl (fd, CDIOCSETRIGHT);
if (! strncasecmp (arg, "mono", strlen(arg)))
return ioctl (fd, CDIOCSETMONO);
if (! strncasecmp (arg, "stereo", strlen(arg)))
return ioctl (fd, CDIOCSETSTERIO);
if (! strncasecmp (arg, "mute", strlen(arg)))
return ioctl (fd, CDIOCSETMUTE);
if (2 != sscanf (arg, "%d %d", &l, &r)) {
warnx("invalid command arguments");
return (0);
}
return setvol (l, r);
default:
case CMD_HELP:
help ();
return (0);
}
}
int play (char *arg)
{
struct ioc_toc_header h;
int rc, n, start, end = 0, istart = 1, iend = 1;
rc = ioctl (fd, CDIOREADTOCHEADER, &h);
if (rc < 0)
return (rc);
n = h.ending_track - h.starting_track + 1;
rc = read_toc_entrys ((n + 1) * sizeof (struct cd_toc_entry));
if (rc < 0)
return (rc);
if (! arg || ! *arg) {
/* Play the whole disc */
if (msf)
return play_blocks (0, msf2lba (toc_buffer[n].addr.msf.minute,
toc_buffer[n].addr.msf.second,
toc_buffer[n].addr.msf.frame));
else
return play_blocks (0, ntohl(toc_buffer[n].addr.lba));
}
if (strchr (arg, '#')) {
/* Play block #blk [ len ] */
int blk, len = 0;
if (2 != sscanf (arg, "#%d%d", &blk, &len) &&
1 != sscanf (arg, "#%d", &blk))
goto Clean_up;
if (len == 0) {
if (msf)
len = msf2lba (toc_buffer[n].addr.msf.minute,
toc_buffer[n].addr.msf.second,
toc_buffer[n].addr.msf.frame) - blk;
else
len = ntohl(toc_buffer[n].addr.lba) - blk;
}
return play_blocks (blk, len);
}
if (strchr (arg, ':')) {
/*
* Play MSF m1:s1 [ .f1 ] [ m2:s2 [ .f2 ] ]
*
* Will now also undestand timed addresses relative
* to the beginning of a track in the form...
*
* tr1 m1:s1[.f1] [[tr2] [m2:s2[.f2]]]
*/
unsigned tr1, tr2;
unsigned m1, m2, s1, s2, f1, f2;
unsigned char tm, ts, tf;
tr2 = m2 = s2 = f2 = f1 = 0;
if (8 == sscanf (arg, "%d %d:%d.%d %d %d:%d.%d",
&tr1, &m1, &s1, &f1, &tr2, &m2, &s2, &f2))
goto Play_Relative_Addresses;
tr2 = m2 = s2 = f2 = f1 = 0;
if (7 == sscanf (arg, "%d %d:%d %d %d:%d.%d",
&tr1, &m1, &s1, &tr2, &m2, &s2, &f2))
goto Play_Relative_Addresses;
tr2 = m2 = s2 = f2 = f1 = 0;
if (7 == sscanf (arg, "%d %d:%d.%d %d %d:%d",
&tr1, &m1, &s1, &f1, &tr2, &m2, &s2))
goto Play_Relative_Addresses;
tr2 = m2 = s2 = f2 = f1 = 0;
if (7 == sscanf (arg, "%d %d:%d.%d %d:%d.%d",
&tr1, &m1, &s1, &f1, &m2, &s2, &f2))
goto Play_Relative_Addresses;
tr2 = m2 = s2 = f2 = f1 = 0;
if (6 == sscanf (arg, "%d %d:%d.%d %d:%d",
&tr1, &m1, &s1, &f1, &m2, &s2))
goto Play_Relative_Addresses;
tr2 = m2 = s2 = f2 = f1 = 0;
if (6 == sscanf (arg, "%d %d:%d %d:%d.%d",
&tr1, &m1, &s1, &m2, &s2, &f2))
goto Play_Relative_Addresses;
tr2 = m2 = s2 = f2 = f1 = 0;
if (6 == sscanf (arg, "%d %d:%d.%d %d %d",
&tr1, &m1, &s1, &f1, &tr2, &m2))
goto Play_Relative_Addresses;
tr2 = m2 = s2 = f2 = f1 = 0;
if (5 == sscanf (arg, "%d %d:%d %d:%d", &tr1, &m1, &s1, &m2, &s2))
goto Play_Relative_Addresses;
tr2 = m2 = s2 = f2 = f1 = 0;
if (5 == sscanf (arg, "%d %d:%d %d %d",
&tr1, &m1, &s1, &tr2, &m2))
goto Play_Relative_Addresses;
tr2 = m2 = s2 = f2 = f1 = 0;
if (5 == sscanf (arg, "%d %d:%d.%d %d",
&tr1, &m1, &s1, &f1, &tr2))
goto Play_Relative_Addresses;
tr2 = m2 = s2 = f2 = f1 = 0;
if (4 == sscanf (arg, "%d %d:%d %d", &tr1, &m1, &s1, &tr2))
goto Play_Relative_Addresses;
tr2 = m2 = s2 = f2 = f1 = 0;
if (4 == sscanf (arg, "%d %d:%d.%d", &tr1, &m1, &s1, &f1))
goto Play_Relative_Addresses;
tr2 = m2 = s2 = f2 = f1 = 0;
if (3 == sscanf (arg, "%d %d:%d", &tr1, &m1, &s1))
goto Play_Relative_Addresses;
tr2 = m2 = s2 = f2 = f1 = 0;
goto Try_Absolute_Timed_Addresses;
Play_Relative_Addresses:
if (! tr1)
tr1 = 1;
else if (tr1 > n)
tr1 = n;
if (msf) {
tm = toc_buffer[tr1].addr.msf.minute;
ts = toc_buffer[tr1].addr.msf.second;
tf = toc_buffer[tr1].addr.msf.frame;
} else
lba2msf(ntohl(toc_buffer[tr1].addr.lba),
&tm, &ts, &tf);
if ((m1 > tm)
|| ((m1 == tm)
&& ((s1 > ts)
|| ((s1 == ts)
&& (f1 > tf))))) {
printf ("Track %d is not that long.\n", tr1);
return (0);
}
tr1--;
f1 += tf;
if (f1 >= 75) {
s1 += f1 / 75;
f1 %= 75;
}
s1 += ts;
if (s1 >= 60) {
m1 += s1 / 60;
s1 %= 60;
}
m1 += tm;
if (! tr2) {
if (m2 || s2 || f2) {
tr2 = tr1;
f2 += f1;
if (f2 >= 75) {
s2 += f2 / 75;
f2 %= 75;
}
s2 += s1;
if (s2 > 60) {
m2 += s2 / 60;
s2 %= 60;
}
m2 += m1;
} else {
tr2 = n;
if (msf) {
m2 = toc_buffer[n].addr.msf.minute;
s2 = toc_buffer[n].addr.msf.second;
f2 = toc_buffer[n].addr.msf.frame;
} else {
lba2msf(ntohl(toc_buffer[n].addr.lba),
&tm, &ts, &tf);
m2 = tm;
s2 = ts;
f2 = tf;
}
}
} else if (tr2 > n) {
tr2 = n;
m2 = s2 = f2 = 0;
} else {
if (m2 || s2 || f2)
tr2--;
if (msf) {
tm = toc_buffer[tr2].addr.msf.minute;
ts = toc_buffer[tr2].addr.msf.second;
tf = toc_buffer[tr2].addr.msf.frame;
} else
lba2msf(ntohl(toc_buffer[tr2].addr.lba),
&tm, &ts, &tf);
f2 += tf;
if (f2 >= 75) {
s2 += f2 / 75;
f2 %= 75;
}
s2 += ts;
if (s2 > 60) {
m2 += s2 / 60;
s2 %= 60;
}
m2 += tm;
}
if (msf) {
tm = toc_buffer[n].addr.msf.minute;
ts = toc_buffer[n].addr.msf.second;
tf = toc_buffer[n].addr.msf.frame;
} else
lba2msf(ntohl(toc_buffer[n].addr.lba),
&tm, &ts, &tf);
if ((tr2 < n)
&& ((m2 > tm)
|| ((m2 == tm)
&& ((s2 > ts)
|| ((s2 == ts)
&& (f2 > tf)))))) {
printf ("The playing time of the disc is not that long.\n");
return (0);
}
return (play_msf (m1, s1, f1, m2, s2, f2));
Try_Absolute_Timed_Addresses:
if (6 != sscanf (arg, "%d:%d.%d%d:%d.%d",
&m1, &s1, &f1, &m2, &s2, &f2) &&
5 != sscanf (arg, "%d:%d.%d%d:%d", &m1, &s1, &f1, &m2, &s2) &&
5 != sscanf (arg, "%d:%d%d:%d.%d", &m1, &s1, &m2, &s2, &f2) &&
3 != sscanf (arg, "%d:%d.%d", &m1, &s1, &f1) &&
4 != sscanf (arg, "%d:%d%d:%d", &m1, &s1, &m2, &s2) &&
2 != sscanf (arg, "%d:%d", &m1, &s1))
goto Clean_up;
if (m2 == 0) {
if (msf) {
m2 = toc_buffer[n].addr.msf.minute;
s2 = toc_buffer[n].addr.msf.second;
f2 = toc_buffer[n].addr.msf.frame;
} else {
lba2msf(ntohl(toc_buffer[n].addr.lba),
&tm, &ts, &tf);
m2 = tm;
s2 = ts;
f2 = tf;
}
}
return play_msf (m1, s1, f1, m2, s2, f2);
}
/*
* Play track trk1 [ .idx1 ] [ trk2 [ .idx2 ] ]
*/
if (4 != sscanf (arg, "%d.%d%d.%d", &start, &istart, &end, &iend) &&
3 != sscanf (arg, "%d.%d%d", &start, &istart, &end) &&
3 != sscanf (arg, "%d%d.%d", &start, &end, &iend) &&
2 != sscanf (arg, "%d.%d", &start, &istart) &&
2 != sscanf (arg, "%d%d", &start, &end) &&
1 != sscanf (arg, "%d", &start))
goto Clean_up;
if (end == 0)
end = n;
return (play_track (start, istart, end, iend));
Clean_up:
warnx("invalid command arguments");
return (0);
}
char *strstatus (int sts)
{
switch (sts) {
case ASTS_INVALID: return ("invalid");
case ASTS_PLAYING: return ("playing");
case ASTS_PAUSED: return ("paused");
case ASTS_COMPLETED: return ("completed");
case ASTS_ERROR: return ("error");
case ASTS_VOID: return ("void");
default: return ("??");
}
}
int pstatus (char *arg)
{
struct ioc_vol v;
struct ioc_read_subchannel ss;
struct cd_sub_channel_info data;
int rc, trk, m, s, f;
int what = 0;
char *p;
while ((p = strtok(arg, " \t"))) {
arg = 0;
if (!strncasecmp(p, "audio", strlen(p)))
what |= STATUS_AUDIO;
else if (!strncasecmp(p, "media", strlen(p)))
what |= STATUS_MEDIA;
else if (!strncasecmp(p, "volume", strlen(p)))
what |= STATUS_VOLUME;
else {
warnx("invalid command arguments");
return 0;
}
}
if (!what)
what = STATUS_AUDIO|STATUS_MEDIA|STATUS_VOLUME;
if (what & STATUS_AUDIO) {
rc = status (&trk, &m, &s, &f);
if (rc >= 0)
if (verbose)
printf ("Audio status = %d<%s>, current track = %d, current position = %d:%02d.%02d\n",
rc, strstatus (rc), trk, m, s, f);
else
printf ("%d %d %d:%02d.%02d\n", rc, trk, m, s, f);
else
printf ("No current status info available\n");
}
if (what & STATUS_MEDIA) {
bzero (&ss, sizeof (ss));
ss.data = &data;
ss.data_len = sizeof (data);
ss.address_format = msf ? CD_MSF_FORMAT : CD_LBA_FORMAT;
ss.data_format = CD_MEDIA_CATALOG;
rc = ioctl (fd, CDIOCREADSUBCHANNEL, (char *) &ss);
if (rc >= 0) {
printf("Media catalog is %sactive",
ss.data->what.media_catalog.mc_valid ? "": "in");
if (ss.data->what.media_catalog.mc_valid &&
ss.data->what.media_catalog.mc_number[0])
printf(", number \"%.15s\"",
ss.data->what.media_catalog.mc_number);
putchar('\n');
} else
printf("No media catalog info available\n");
}
if (what & STATUS_VOLUME) {
rc = ioctl (fd, CDIOCGETVOL, &v);
if (rc >= 0)
if (verbose)
printf ("Left volume = %d, right volume = %d\n",
v.vol[0], v.vol[1]);
else
printf ("%d %d\n", v.vol[0], v.vol[1]);
else
printf ("No volume level info available\n");
}
return(0);
}
int info (char *arg)
{
struct ioc_toc_header h;
int rc, i, n;
rc = ioctl (fd, CDIOREADTOCHEADER, &h);
if (rc >= 0) {
if (verbose)
printf ("Starting track = %d, ending track = %d, TOC size = %d bytes\n",
h.starting_track, h.ending_track, h.len);
else
printf ("%d %d %d\n", h.starting_track,
h.ending_track, h.len);
} else {
warn("getting toc header");
return (rc);
}
n = h.ending_track - h.starting_track + 1;
rc = read_toc_entrys ((n + 1) * sizeof (struct cd_toc_entry));
if (rc < 0)
return (rc);
if (verbose) {
printf ("track start duration block length type\n");
printf ("-------------------------------------------------\n");
}
for (i = 0; i < n; i++) {
printf ("%5d ", toc_buffer[i].track);
prtrack (toc_buffer + i, 0);
}
printf ("%5d ", toc_buffer[n].track);
prtrack (toc_buffer + n, 1);
return (0);
}
void lba2msf (unsigned long lba, u_char *m, u_char *s, u_char *f)
{
lba += 150; /* block start offset */
lba &= 0xffffff; /* negative lbas use only 24 bits */
*m = lba / (60 * 75);
lba %= (60 * 75);
*s = lba / 75;
*f = lba % 75;
}
unsigned int msf2lba (u_char m, u_char s, u_char f)
{
return (((m * 60) + s) * 75 + f) - 150;
}
void prtrack (struct cd_toc_entry *e, int lastflag)
{
int block, next, len;
u_char m, s, f;
if (msf) {
/* Print track start */
printf ("%2d:%02d.%02d ", e->addr.msf.minute,
e->addr.msf.second, e->addr.msf.frame);
block = msf2lba (e->addr.msf.minute, e->addr.msf.second,
e->addr.msf.frame);
} else {
block = ntohl(e->addr.lba);
lba2msf(block, &m, &s, &f);
/* Print track start */
printf ("%2d:%02d.%02d ", m, s, f);
}
if (lastflag) {
/* Last track -- print block */
printf (" - %6d - -\n", block);
return;
}
if (msf)
next = msf2lba (e[1].addr.msf.minute, e[1].addr.msf.second,
e[1].addr.msf.frame);
else
next = ntohl(e[1].addr.lba);
len = next - block;
lba2msf (len, &m, &s, &f);
/* Print duration, block, length, type */
printf ("%2d:%02d.%02d %6d %6d %5s\n", m, s, f, block, len,
(e->control & 4) ? "data" : "audio");
}
int play_track (int tstart, int istart, int tend, int iend)
{
struct ioc_play_track t;
t.start_track = tstart;
t.start_index = istart;
t.end_track = tend;
t.end_index = iend;
return ioctl (fd, CDIOCPLAYTRACKS, &t);
}
int play_blocks (int blk, int len)
{
struct ioc_play_blocks t;
t.blk = blk;
t.len = len;
return ioctl (fd, CDIOCPLAYBLOCKS, &t);
}
int setvol (int left, int right)
{
struct ioc_vol v;
v.vol[0] = left;
v.vol[1] = right;
v.vol[2] = 0;
v.vol[3] = 0;
return ioctl (fd, CDIOCSETVOL, &v);
}
int read_toc_entrys (int len)
{
struct ioc_read_toc_entry t;
t.address_format = msf ? CD_MSF_FORMAT : CD_LBA_FORMAT;
t.starting_track = 0;
t.data_len = len;
t.data = toc_buffer;
return (ioctl (fd, CDIOREADTOCENTRYS, (char *) &t));
}
int play_msf (int start_m, int start_s, int start_f,
int end_m, int end_s, int end_f)
{
struct ioc_play_msf a;
a.start_m = start_m;
a.start_s = start_s;
a.start_f = start_f;
a.end_m = end_m;
a.end_s = end_s;
a.end_f = end_f;
return ioctl (fd, CDIOCPLAYMSF, (char *) &a);
}
int status (int *trk, int *min, int *sec, int *frame)
{
struct ioc_read_subchannel s;
struct cd_sub_channel_info data;
u_char mm, ss, ff;
bzero (&s, sizeof (s));
s.data = &data;
s.data_len = sizeof (data);
s.address_format = msf ? CD_MSF_FORMAT : CD_LBA_FORMAT;
s.data_format = CD_CURRENT_POSITION;
if (ioctl (fd, CDIOCREADSUBCHANNEL, (char *) &s) < 0)
return -1;
*trk = s.data->what.position.track_number;
if (msf) {
*min = s.data->what.position.reladdr.msf.minute;
*sec = s.data->what.position.reladdr.msf.second;
*frame = s.data->what.position.reladdr.msf.frame;
} else {
lba2msf(ntohl(s.data->what.position.reladdr.lba),
&mm, &ss, &ff);
*min = mm;
*sec = ss;
*frame = ff;
}
return s.data->header.audio_status;
}
const char *
cdcontrol_prompt()
{
return ("cdcontrol> ");
}
char *
input (int *cmd)
{
#define MAXLINE 80
static EditLine *el = NULL;
static History *hist = NULL;
static char buf[MAXLINE];
int num = 0;
int len;
const char *bp = NULL;
char *p;
do {
if (verbose) {
if (!el) {
el = el_init("cdcontrol", stdin, stdout);
hist = history_init();
history(hist, H_EVENT, 100);
el_set(el, EL_HIST, history, hist);
el_set(el, EL_EDITOR, "emacs");
el_set(el, EL_PROMPT, cdcontrol_prompt);
el_set(el, EL_SIGNAL, 1);
el_source(el, NULL);
}
if ((bp = el_gets(el, &num)) == NULL || num == 0)
return (0);
len = (num > MAXLINE) ? MAXLINE : num;
memcpy(buf, bp, len);
buf[len] = 0;
history(hist, H_ENTER, bp);
#undef MAXLINE
} else {
if (! fgets (buf, sizeof (buf), stdin)) {
*cmd = CMD_QUIT;
fprintf (stderr, "\r\n");
return (0);
}
}
p = parse (buf, cmd);
} while (! p);
return (p);
}
char *parse (char *buf, int *cmd)
{
struct cmdtab *c;
char *p;
int len;
for (p=buf; isspace (*p); p++)
continue;
if (isdigit (*p) || (p[0] == '#' && isdigit (p[1]))) {
*cmd = CMD_PLAY;
return (p);
}
for (buf = p; *p && ! isspace (*p); p++)
continue;
len = p - buf;
if (! len)
return (0);
if (*p) { /* It must be a spacing character! */
char *q;
*p++ = 0;
for (q=p; *q && *q != '\n' && *q != '\r'; q++)
continue;
*q = 0;
}
*cmd = -1;
for (c=cmdtab; c->name; ++c) {
/* Is it an exact match? */
if (! strcasecmp (buf, c->name)) {
*cmd = c->command;
break;
}
/* Try short hand forms then... */
if (len >= c->min && ! strncasecmp (buf, c->name, len)) {
if (*cmd != -1 && *cmd != c->command) {
warnx("ambiguous command");
return (0);
}
*cmd = c->command;
}
}
if (*cmd == -1) {
warnx("invalid command, enter ``help'' for commands");
return (0);
}
while (isspace (*p))
p++;
return p;
}
int open_cd ()
{
char devbuf[MAXPATHLEN];
if (fd > -1)
return (1);
if (*cdname == '/') {
snprintf (devbuf, MAXPATHLEN, "%s", cdname);
} else if (*cdname == 'r') {
snprintf (devbuf, MAXPATHLEN, "/dev/%s", cdname);
} else {
snprintf (devbuf, MAXPATHLEN, "/dev/r%s", cdname);
}
fd = open (devbuf, O_RDONLY);
if (fd < 0 && errno == ENOENT) {
strcat (devbuf, DEFAULT_CD_PARTITION);
fd = open (devbuf, O_RDONLY);
}
if (fd < 0) {
if (errno == ENXIO) {
/* ENXIO has an overloaded meaning here.
* The original "Device not configured" should
* be interpreted as "No disc in drive %s". */
warnx("no disc in drive %s", devbuf);
return (0);
}
err(1, "%s", devbuf);
}
return (1);
}
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