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First cut at separating disc analysis part from standalone source.

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More modularity is needed.
This commit is contained in:
rocky
2003-08-14 13:41:26 +00:00
parent 99780af8cc
commit 93eb9765ab
4 changed files with 377 additions and 318 deletions
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349
src/cd-info.c
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@@ -1,5 +1,5 @@
/*
$Id: cd-info.c,v 1.17 2003/08/13 12:33:59 rocky Exp $
$Id: cd-info.c,v 1.18 2003/08/14 13:41:26 rocky Exp $
Copyright (C) 2003 Rocky Bernstein <rocky@panix.com>
Copyright (C) 1996,1997,1998 Gerd Knorr <kraxel@bytesex.org>
@@ -63,6 +63,7 @@
#endif
#include <errno.h>
#include "analyze.h"
#ifdef ENABLE_NLS
#include <locale.h>
@@ -95,85 +96,9 @@
#endif
#define err_exit(fmt, args...) \
{ fprintf(stderr, "%s: "fmt, program_name, ##args); \
myexit(EXIT_FAILURE); \
}
fprintf(stderr, "%s: "fmt, program_name, ##args); \
myexit(cdio, EXIT_FAILURE)
/*
Subject: -65- How can I read an IRIX (EFS) CD-ROM on a machine which
doesn't use EFS?
Date: 18 Jun 1995 00:00:01 EST
You want 'efslook', at
ftp://viz.tamu.edu/pub/sgi/software/efslook.tar.gz.
and
! Robert E. Seastrom <rs@access4.digex.net>'s software (with source
! code) for using an SGI CD-ROM on a Macintosh is at
! ftp://bifrost.seastrom.com/pub/mac/CDROM-Jumpstart.sit151.hqx.
*/
#define FS_NO_DATA 0 /* audio only */
#define FS_HIGH_SIERRA 1
#define FS_ISO_9660 2
#define FS_INTERACTIVE 3
#define FS_HFS 4
#define FS_UFS 5
#define FS_EXT2 6
#define FS_ISO_HFS 7 /* both hfs & isofs filesystem */
#define FS_ISO_9660_INTERACTIVE 8 /* both CD-RTOS and isofs filesystem */
#define FS_3DO 9
#define FS_UNKNOWN 15
#define FS_MASK 15
#define XA 16
#define MULTISESSION 32
#define PHOTO_CD 64
#define HIDDEN_TRACK 128
#define CDTV 256
#define BOOTABLE 512
#define VIDEOCDI 1024
#define ROCKRIDGE 2048
#define JOLIET 4096
#define SVCD 8192 /* Choiji Video CD */
char buffer[6][CDIO_CD_FRAMESIZE_RAW]; /* for CD-Data */
/* Some interesting sector numbers stored in the above buffer. */
#define ISO_SUPERBLOCK_SECTOR 16 /* buffer[0] */
#define UFS_SUPERBLOCK_SECTOR 4 /* buffer[2] */
#define BOOT_SECTOR 17 /* buffer[3] */
#define VCD_INFO_SECTOR 150 /* buffer[4] */
typedef struct signature
{
unsigned int buf_num;
unsigned int offset;
const char *sig_str;
const char *description;
} signature_t;
static signature_t sigs[] =
{
/*buffer[x] off look for description */
{0, 1, "CD001", "ISO 9660"},
{0, 1, "CD-I", "CD-I"},
{0, 8, "CDTV", "CDTV"},
{0, 8, "CD-RTOS", "CD-RTOS"},
{0, 9, "CDROM", "HIGH SIERRA"},
{0, 16, "CD-BRIDGE", "BRIDGE"},
{0, 1024, "CD-XA001", "XA"},
{1, 64, "PPPPHHHHOOOOTTTTOOOO____CCCCDDDD", "PHOTO CD"},
{1, 0x438, "\x53\xef", "EXT2 FS"},
{2, 1372, "\x54\x19\x01\x0", "UFS"},
{3, 7, "EL TORITO", "BOOTABLE"},
{4, 0, "VIDEO_CD", "VIDEO CD"},
{4, 0, "SUPERVCD", "Chaoji VCD"},
{ 0 }
};
#if 0
#define STRONG "\033[1m"
@@ -183,28 +108,6 @@ static signature_t sigs[] =
#define NORMAL ""
#endif
#define IS_ISOFS 0
#define IS_CD_I 1
#define IS_CDTV 2
#define IS_CD_RTOS 3
#define IS_HS 4
#define IS_BRIDGE 5
#define IS_XA 6
#define IS_PHOTO_CD 7
#define IS_EXT2 8
#define IS_UFS 9
#define IS_BOOTABLE 10
#define IS_VIDEO_CD 11 /* Video CD */
#define IS_SVCD 12 /* SVCD or CVD */
int rc; /* return code */
int i,j; /* index */
int isofs_size = 0; /* size of session */
int start_track; /* first sector of track */
int ms_offset; /* multisession offset found by track-walking */
int data_start; /* start of data area */
int joliet_level = 0;
CdIo *cdio;
track_t num_tracks;
track_t first_track_num;
@@ -486,204 +389,8 @@ PARTICULAR PURPOSE.\n\
}
/* ------------------------------------------------------------------------ */
/* some ISO 9660 fiddling */
static int
read_block(int superblock, uint32_t offset, uint8_t bufnum, track_t track_num)
{
unsigned int track_sec_count = cdio_get_track_sec_count(cdio, track_num);
memset(buffer[bufnum], 0, CDIO_CD_FRAMESIZE);
if ( track_sec_count < superblock) {
dbg_print(1, "reading block %u skipped track %d has only %u sectors\n",
superblock, track_num, track_sec_count);
return -1;
}
dbg_print(2, "about to read sector %u\n", offset+superblock);
if (cdio_get_track_green(cdio, track_num)) {
if (0 > cdio_read_mode2_sector(cdio, buffer[bufnum],
offset+superblock, false))
return -1;
} else {
if (0 > cdio_read_yellow_sector(cdio, buffer[bufnum],
offset+superblock, false))
return -1;
}
return 0;
}
static bool
is_it(int num)
{
signature_t *sigp=&sigs[num];
int len=strlen(sigp->sig_str);
/* TODO: check that num < largest sig. */
return 0 == memcmp(&buffer[sigp->buf_num][sigp->offset], sigp->sig_str, len);
}
static int
is_hfs(void)
{
return (0 == memcmp(&buffer[1][512],"PM",2)) ||
(0 == memcmp(&buffer[1][512],"TS",2)) ||
(0 == memcmp(&buffer[1][1024], "BD",2));
}
static int
is_3do(void)
{
return (0 == memcmp(&buffer[1][0],"\x01\x5a\x5a\x5a\x5a\x5a\x01", 7)) &&
(0 == memcmp(&buffer[1][40], "CD-ROM", 6));
}
static int is_joliet(void)
{
return 2 == buffer[3][0] && buffer[3][88] == 0x25 && buffer[3][89] == 0x2f;
}
/* ISO 9660 volume space in M2F1_SECTOR_SIZE byte units */
static int
get_size(void)
{
return ((buffer[0][80] & 0xff) |
((buffer[0][81] & 0xff) << 8) |
((buffer[0][82] & 0xff) << 16) |
((buffer[0][83] & 0xff) << 24));
}
static int
get_joliet_level( void )
{
switch (buffer[3][90]) {
case 0x40: return 1;
case 0x43: return 2;
case 0x45: return 3;
}
return 0;
}
#define is_it_dbg(sig) \
if (is_it(sig)) printf("%s, ", sigs[sig].description)
static int
guess_filesystem(int start_session, track_t track_num)
{
int ret = 0;
if (read_block(ISO_SUPERBLOCK_SECTOR, start_session, 0, track_num) < 0)
return FS_UNKNOWN;
if (opts.debug_level > 0) {
/* buffer is defined */
is_it_dbg(IS_CD_I);
is_it_dbg(IS_CD_RTOS);
is_it_dbg(IS_ISOFS);
is_it_dbg(IS_HS);
is_it_dbg(IS_BRIDGE);
is_it_dbg(IS_XA);
is_it_dbg(IS_CDTV);
puts("");
}
/* filesystem */
if (is_it(IS_CD_I) && is_it(IS_CD_RTOS)
&& !is_it(IS_BRIDGE) && !is_it(IS_XA)) {
return FS_INTERACTIVE;
} else { /* read sector 0 ONLY, when NO greenbook CD-I !!!! */
if (read_block(0, start_session, 1, track_num) < 0)
return ret;
if (opts.debug_level > 0) {
/* buffer[1] is defined */
is_it_dbg(IS_PHOTO_CD);
if (is_hfs()) printf("HFS, ");
is_it_dbg(IS_EXT2);
if (is_3do()) printf("3DO, ");
puts("");
}
if (is_it(IS_HS))
ret |= FS_HIGH_SIERRA;
else if (is_it(IS_ISOFS)) {
if (is_it(IS_CD_RTOS) && is_it(IS_BRIDGE))
ret = FS_ISO_9660_INTERACTIVE;
else if (is_hfs())
ret = FS_ISO_HFS;
else
ret = FS_ISO_9660;
isofs_size = get_size();
#if 0
if (is_rockridge())
ret |= ROCKRIDGE;
#endif
if (read_block(BOOT_SECTOR, start_session, 3, track_num) < 0)
return ret;
if (opts.debug_level > 0) {
/* buffer[3] is defined */
if (is_joliet()) printf("JOLIET, ");
puts("");
is_it_dbg(IS_BOOTABLE);
puts("");
}
if (is_joliet()) {
joliet_level = get_joliet_level();
ret |= JOLIET;
}
if (is_it(IS_BOOTABLE))
ret |= BOOTABLE;
if (is_it(IS_XA) && is_it(IS_ISOFS)
&& !is_it(IS_PHOTO_CD)) {
if (read_block(VCD_INFO_SECTOR, start_session, 4, track_num) < 0)
return ret;
if (is_it(IS_BRIDGE) && is_it(IS_CD_RTOS)) {
if (is_it(IS_VIDEO_CD)) ret |= VIDEOCDI;
else if (is_it(IS_SVCD)) ret |= SVCD;
}
}
}
else if (is_hfs()) ret |= FS_HFS;
else if (is_it(IS_EXT2)) ret |= FS_EXT2;
else if (is_3do()) ret |= FS_3DO;
else {
if (read_block(UFS_SUPERBLOCK_SECTOR, start_session, 2, track_num) < 0)
return ret;
if (opts.debug_level > 0) {
/* buffer[2] is defined */
is_it_dbg(IS_UFS);
puts("");
}
if (is_it(IS_UFS))
ret |= FS_UFS;
else
ret |= FS_UNKNOWN;
}
}
/* other checks */
if (is_it(IS_XA)) ret |= XA;
if (is_it(IS_PHOTO_CD)) ret |= PHOTO_CD;
if (is_it(IS_CDTV)) ret |= CDTV;
return ret;
}
static void
myexit(int rc)
myexit(CdIo *cdio, int rc)
{
if (NULL != cdio)
cdio_destroy(cdio);
@@ -725,7 +432,7 @@ msf_seconds(msf_t *msf)
the number of tracks.
*/
static unsigned long
cddb_discid()
cddb_discid(CdIo *cdio, int num_tracks)
{
int i,t,n=0;
msf_t start_msf;
@@ -891,14 +598,17 @@ print_vcd_info(void) {
#endif
static void
print_analysis(int fs, int num_audio)
print_analysis(int ms_offset, cdio_analysis_t cdio_analysis,
int fs, int first_data, int num_audio,
int num_tracks, CdIo *cdio)
{
int need_lf;
switch(fs & FS_MASK) {
case FS_NO_DATA:
if (num_audio > 0) {
printf("Audio CD, CDDB disc ID is %08lx\n", cddb_discid());
printf("Audio CD, CDDB disc ID is %08lx\n",
cddb_discid(cdio, num_tracks));
#ifdef HAVE_CDDB
if (!opts.no_cddb) print_cddb_info();
#endif
@@ -907,7 +617,7 @@ print_analysis(int fs, int num_audio)
case FS_ISO_9660:
printf("CD-ROM with ISO 9660 filesystem");
if (fs & JOLIET) {
printf(" and joliet extension level %d", joliet_level);
printf(" and joliet extension level %d", cdio_analysis.joliet_level);
}
if (fs & ROCKRIDGE)
printf(" and rockridge extensions");
@@ -946,7 +656,7 @@ print_analysis(int fs, int num_audio)
case FS_ISO_9660_INTERACTIVE:
case FS_ISO_HFS:
printf("ISO 9660: %i blocks, label `%.32s'\n",
isofs_size, buffer[0]+40);
cdio_analysis.isofs_size, cdio_analysis.iso_label);
break;
}
need_lf = 0;
@@ -955,11 +665,12 @@ print_analysis(int fs, int num_audio)
if (fs & XA)
need_lf += printf("XA sectors ");
if (fs & MULTISESSION)
need_lf += printf("Multisession, offset = %i ",ms_offset);
need_lf += printf("Multisession, offset = %i ", ms_offset);
if (fs & HIDDEN_TRACK)
need_lf += printf("Hidden Track ");
if (fs & PHOTO_CD)
need_lf += printf("%sPhoto CD ", num_audio > 0 ? " Portfolio " : "");
need_lf += printf("%sPhoto CD ",
num_audio > 0 ? " Portfolio " : "");
if (fs & CDTV)
need_lf += printf("Commodore CDTV ");
if (first_data > 1)
@@ -980,7 +691,6 @@ print_analysis(int fs, int num_audio)
if (need_lf) printf("\n");
}
/* ------------------------------------------------------------------------ */
int
@@ -988,6 +698,11 @@ main(int argc, const char *argv[])
{
int fs=0;
int i;
lsn_t start_track; /* first sector of track */
lsn_t data_start =0; /* start of data area */
int ms_offset = 0;
poptContext optCon = poptGetContext (NULL, argc, argv, optionsTable, 0);
gl_default_cdio_log_handler = cdio_log_set_handler (_log_handler);
@@ -1210,7 +925,7 @@ main(int argc, const char *argv[])
/* CD-I/Ready says start_track <= 30*75 then CDDA */
if (start_track > 100 /* 100 is just a guess */) {
fs = guess_filesystem(0, 1);
fs = guess_filesystem(cdio, 0, 1);
if ((fs & FS_MASK) != FS_UNKNOWN)
fs |= HIDDEN_TRACK;
else {
@@ -1220,9 +935,11 @@ main(int argc, const char *argv[])
start_track);
}
}
print_analysis(fs, num_audio);
print_analysis(ms_offset, cdio_analysis, fs, first_data, num_audio,
num_tracks, cdio);
} else {
/* we have data track(s) */
int j;
for (j = 2, i = first_data; i <= num_tracks; i++) {
msf_t msf;
@@ -1248,22 +965,23 @@ main(int argc, const char *argv[])
data_start = start_track;
/* skip tracks which belong to the current walked session */
if (start_track < data_start + isofs_size)
if (start_track < data_start + cdio_analysis.isofs_size)
continue;
fs = guess_filesystem(start_track, i);
fs = guess_filesystem(cdio, start_track, i);
if (i > 1) {
/* track is beyond last session -> new session found */
ms_offset = start_track;
printf("session #%d starts at track %2i, LSN: %6i,"
" ISO 9660 blocks: %6i\n",
j++, i, start_track, isofs_size);
j++, i, start_track, cdio_analysis.isofs_size);
printf("ISO 9660: %i blocks, label `%.32s'\n",
isofs_size, buffer[0]+40);
cdio_analysis.isofs_size, cdio_analysis.iso_label);
fs |= MULTISESSION;
} else {
print_analysis(fs, num_audio);
print_analysis(ms_offset, cdio_analysis, fs, first_data, num_audio,
num_tracks, cdio);
}
if (!(((fs & FS_MASK) == FS_ISO_9660 ||
@@ -1274,9 +992,8 @@ main(int argc, const char *argv[])
}
}
}
myexit(EXIT_SUCCESS);
myexit(cdio, EXIT_SUCCESS);
/* Not reached:*/
return(EXIT_SUCCESS);
}