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/*
* Copyright (C) 2001-2004 Billy Biggs <vektor@dumbterm.net>,
* Hรฅkan Hjort <d95hjort@dtek.chalmers.se>,
* Bjรถrn Englund <d4bjorn@dtek.chalmers.se>
*
* This file is part of libdvdread.
*
* libdvdread 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.
*
* libdvdread is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with libdvdread; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/time.h> /* For the timing of dvdcss_title crack. */
#include <fcntl.h>
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <unistd.h>
#include <limits.h>
#include <dirent.h>
/* misc win32 helpers */
#ifdef WIN32
#ifndef HAVE_GETTIMEOFDAY
/* replacement gettimeofday implementation */
#include <sys/timeb.h>
static inline int _private_gettimeofday( struct timeval *tv, void *tz )
{
struct timeb t;
ftime( &t );
tv->tv_sec = t.time;
tv->tv_usec = t.millitm * 1000;
return 0;
}
#define gettimeofday(TV, TZ) _private_gettimeofday((TV), (TZ))
#endif
#include <io.h> /* read() */
#define lseek64 _lseeki64
#endif
#if defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__) || defined(__bsdi__)|| defined(__DARWIN__)
#define SYS_BSD 1
#endif
#if defined(__sun)
#include <sys/mnttab.h>
#elif defined(SYS_BSD)
#include <fstab.h>
#elif defined(__linux__)
#include <mntent.h>
#endif
#include "dvd_udf.h"
#include "dvd_input.h"
#include "dvd_reader.h"
#include "md5.h"
#define DEFAULT_UDF_CACHE_LEVEL 1
struct dvd_reader_s {
/* Basic information. */
int isImageFile;
/* Hack for keeping track of the css status.
* 0: no css, 1: perhaps (need init of keys), 2: have done init */
int css_state;
int css_title; /* Last title that we have called dvdinpute_title for. */
/* Information required for an image file. */
dvd_input_t dev;
/* Information required for a directory path drive. */
char *path_root;
/* Filesystem cache */
int udfcache_level; /* 0 - turned off, 1 - on */
void *udfcache;
};
#define TITLES_MAX 9
struct dvd_file_s {
/* Basic information. */
dvd_reader_t *dvd;
/* Hack for selecting the right css title. */
int css_title;
/* Information required for an image file. */
uint32_t lb_start;
uint32_t seek_pos;
/* Information required for a directory path drive. */
size_t title_sizes[ TITLES_MAX ];
dvd_input_t title_devs[ TITLES_MAX ];
/* Calculated at open-time, size in blocks. */
ssize_t filesize;
};
int UDFReadBlocksRaw( dvd_reader_t *device, uint32_t lb_number,
size_t block_count, unsigned char *data,
int encrypted );
/**
* Set the level of caching on udf
* level = 0 (no caching)
* level = 1 (caching filesystem info)
*/
int DVDUDFCacheLevel(dvd_reader_t *device, int level)
{
struct dvd_reader_s *dev = (struct dvd_reader_s *)device;
if(level > 0) {
level = 1;
} else if(level < 0) {
return dev->udfcache_level;
}
dev->udfcache_level = level;
return level;
}
void *GetUDFCacheHandle(dvd_reader_t *device)
{
struct dvd_reader_s *dev = (struct dvd_reader_s *)device;
return dev->udfcache;
}
void SetUDFCacheHandle(dvd_reader_t *device, void *cache)
{
struct dvd_reader_s *dev = (struct dvd_reader_s *)device;
dev->udfcache = cache;
}
/* Loop over all titles and call dvdcss_title to crack the keys. */
static int initAllCSSKeys( dvd_reader_t *dvd )
{
struct timeval all_s, all_e;
struct timeval t_s, t_e;
char filename[ MAX_UDF_FILE_NAME_LEN ];
uint32_t start, len;
int title;
char *nokeys_str = getenv("DVDREAD_NOKEYS");
if(nokeys_str != NULL)
return 0;
fprintf( stderr, "\n" );
fprintf( stderr, "libdvdread: Attempting to retrieve all CSS keys\n" );
fprintf( stderr, "libdvdread: This can take a _long_ time, "
"please be patient\n\n" );
gettimeofday(&all_s, NULL);
for( title = 0; title < 100; title++ ) {
gettimeofday( &t_s, NULL );
if( title == 0 ) {
sprintf( filename, "/VIDEO_TS/VIDEO_TS.VOB" );
} else {
sprintf( filename, "/VIDEO_TS/VTS_%02d_%d.VOB", title, 0 );
}
start = UDFFindFile( dvd, filename, &len );
if( start != 0 && len != 0 ) {
/* Perform CSS key cracking for this title. */
fprintf( stderr, "libdvdread: Get key for %s at 0x%08x\n",
filename, start );
if( dvdinput_title( dvd->dev, (int)start ) < 0 ) {
fprintf( stderr, "libdvdread: Error cracking CSS key for %s (0x%08x)\n", filename, start);
}
gettimeofday( &t_e, NULL );
fprintf( stderr, "libdvdread: Elapsed time %ld\n",
(long int) t_e.tv_sec - t_s.tv_sec );
}
if( title == 0 ) continue;
gettimeofday( &t_s, NULL );
sprintf( filename, "/VIDEO_TS/VTS_%02d_%d.VOB", title, 1 );
start = UDFFindFile( dvd, filename, &len );
if( start == 0 || len == 0 ) break;
/* Perform CSS key cracking for this title. */
fprintf( stderr, "libdvdread: Get key for %s at 0x%08x\n",
filename, start );
if( dvdinput_title( dvd->dev, (int)start ) < 0 ) {
fprintf( stderr, "libdvdread: Error cracking CSS key for %s (0x%08x)!!\n", filename, start);
}
gettimeofday( &t_e, NULL );
fprintf( stderr, "libdvdread: Elapsed time %ld\n",
(long int) t_e.tv_sec - t_s.tv_sec );
}
title--;
fprintf( stderr, "libdvdread: Found %d VTS's\n", title );
gettimeofday(&all_e, NULL);
fprintf( stderr, "libdvdread: Elapsed time %ld\n",
(long int) all_e.tv_sec - all_s.tv_sec );
return 0;
}
/**
* Open a DVD image or block device file.
*/
static dvd_reader_t *DVDOpenImageFile( const char *location, int have_css )
{
dvd_reader_t *dvd;
dvd_input_t dev;
dev = dvdinput_open( location );
if( !dev ) {
fprintf( stderr, "libdvdread: Can't open %s for reading\n", location );
return NULL;
}
dvd = (dvd_reader_t *) malloc( sizeof( dvd_reader_t ) );
if( !dvd ) {
dvdinput_close(dev);
return NULL;
}
dvd->isImageFile = 1;
dvd->dev = dev;
dvd->path_root = NULL;
dvd->udfcache_level = DEFAULT_UDF_CACHE_LEVEL;
dvd->udfcache = NULL;
if( have_css ) {
/* Only if DVDCSS_METHOD = title, a bit if it's disc or if
* DVDCSS_METHOD = key but region missmatch. Unfortunaly we
* don't have that information. */
dvd->css_state = 1; /* Need key init. */
}
dvd->css_title = 0;
return dvd;
}
static dvd_reader_t *DVDOpenPath( const char *path_root )
{
dvd_reader_t *dvd;
dvd = (dvd_reader_t *) malloc( sizeof( dvd_reader_t ) );
if( !dvd ) return NULL;
dvd->isImageFile = 0;
dvd->dev = 0;
dvd->path_root = strdup( path_root );
if(!dvd->path_root) {
free(dvd);
return 0;
}
dvd->udfcache_level = DEFAULT_UDF_CACHE_LEVEL;
dvd->udfcache = NULL;
dvd->css_state = 0; /* Only used in the UDF path */
dvd->css_title = 0; /* Only matters in the UDF path */
return dvd;
}
#if defined(__sun)
/* /dev/rdsk/c0t6d0s0 (link to /devices/...)
/vol/dev/rdsk/c0t6d0/??
/vol/rdsk/<name> */
static char *sun_block2char( const char *path )
{
char *new_path;
/* Must contain "/dsk/" */
if( !strstr( path, "/dsk/" ) ) return (char *) strdup( path );
/* Replace "/dsk/" with "/rdsk/" */
new_path = malloc( strlen(path) + 2 );
strcpy( new_path, path );
strcpy( strstr( new_path, "/dsk/" ), "" );
strcat( new_path, "/rdsk/" );
strcat( new_path, strstr( path, "/dsk/" ) + strlen( "/dsk/" ) );
return new_path;
}
#endif
#if defined(SYS_BSD)
/* FreeBSD /dev/(r)(a)cd0c (a is for atapi), recomended to _not_ use r
OpenBSD /dev/rcd0c, it needs to be the raw device
NetBSD /dev/rcd0[d|c|..] d for x86, c (for non x86), perhaps others
Darwin /dev/rdisk0, it needs to be the raw device
BSD/OS /dev/sr0c (if not mounted) or /dev/rsr0c ('c' any letter will do) */
static char *bsd_block2char( const char *path )
{
char *new_path;
/* If it doesn't start with "/dev/" or does start with "/dev/r" exit */
if( !strncmp( path, "/dev/", 5 ) || strncmp( path, "/dev/r", 6 ) )
return (char *) strdup( path );
/* Replace "/dev/" with "/dev/r" */
new_path = malloc( strlen(path) + 2 );
strcpy( new_path, "/dev/r" );
strcat( new_path, path + strlen( "/dev/" ) );
return new_path;
}
#endif
dvd_reader_t *DVDOpen( const char *ppath )
{
struct stat fileinfo;
int ret;
int have_css;
dvd_reader_t *ret_val = NULL;
char *dev_name = NULL;
char *path;
#ifdef _MSC_VER
int len;
#endif
if( ppath == NULL )
return 0;
path = strdup(ppath);
if( path == NULL )
return 0;
/* Try to open libdvdcss or fall back to standard functions */
have_css = dvdinput_setup();
#ifdef _MSC_VER
/* Strip off the trailing \ if it is not a drive */
len = strlen(path);
if ((len > 1) &&
(path[len - 1] == '\\') &&
(path[len - 2] != ':'))
{
path[len-1] = '\0';
}
#endif
ret = stat( path, &fileinfo );
if( ret < 0 ) {
/* maybe "host:port" url? try opening it with acCeSS library */
if( strchr(path,':') ) {
ret_val = DVDOpenImageFile( path, have_css );
free(path);
return ret_val;
}
/* If we can't stat the file, give up */
fprintf( stderr, "libdvdread: Can't stat %s\n", path );
perror("");
free(path);
return NULL;
}
/* First check if this is a block/char device or a file*/
if( S_ISBLK( fileinfo.st_mode ) ||
S_ISCHR( fileinfo.st_mode ) ||
S_ISREG( fileinfo.st_mode ) ) {
/**
* Block devices and regular files are assumed to be DVD-Video images.
*/
#if defined(__sun)
ret_val = DVDOpenImageFile( sun_block2char( path ), have_css );
#elif defined(SYS_BSD)
ret_val = DVDOpenImageFile( bsd_block2char( path ), have_css );
#else
ret_val = DVDOpenImageFile( path, have_css );
#endif
free(path);
return ret_val;
} else if( S_ISDIR( fileinfo.st_mode ) ) {
dvd_reader_t *auth_drive = 0;
char *path_copy;
#if defined(SYS_BSD)
struct fstab* fe;
#elif defined(__sun) || defined(__linux__)
FILE *mntfile;
#endif
/* XXX: We should scream real loud here. */
if( !(path_copy = strdup( path ) ) ) {
free(path);
return NULL;
}
#ifndef WIN32 /* don't have fchdir, and getcwd( NULL, ... ) is strange */
/* Also WIN32 does not have symlinks, so we don't need this bit of code. */
/* Resolve any symlinks and get the absolut dir name. */
{
char *new_path;
int cdir = open( ".", O_RDONLY );
if( cdir >= 0 ) {
chdir( path_copy );
new_path = malloc(PATH_MAX+1);
if(!new_path) {
free(path);
return NULL;
}
getcwd(new_path, PATH_MAX );
fchdir( cdir );
close( cdir );
free( path_copy );
path_copy = new_path;
}
}
#endif
/**
* If we're being asked to open a directory, check if that directory
* is the mountpoint for a DVD-ROM which we can use instead.
*/
if( strlen( path_copy ) > 1 ) {
if( path_copy[ strlen( path_copy ) - 1 ] == '/' )
path_copy[ strlen( path_copy ) - 1 ] = '\0';
}
if( strlen( path_copy ) > TITLES_MAX ) {
if( !strcasecmp( &(path_copy[ strlen( path_copy ) - TITLES_MAX ]),
"/video_ts" ) ) {
path_copy[ strlen( path_copy ) - TITLES_MAX ] = '\0';
}
}
if(path_copy[0] == '\0') {
path_copy[0] = '/';
path_copy[1] = '\0';
}
#if defined(SYS_BSD)
if( ( fe = getfsfile( path_copy ) ) ) {
dev_name = bsd_block2char( fe->fs_spec );
fprintf( stderr,
"libdvdread: Attempting to use device %s"
" mounted on %s for CSS authentication\n",
dev_name,
fe->fs_file );
auth_drive = DVDOpenImageFile( dev_name, have_css );
}
#elif defined(__sun)
mntfile = fopen( MNTTAB, "r" );
if( mntfile ) {
struct mnttab mp;
int res;
while( ( res = getmntent( mntfile, &mp ) ) != -1 ) {
if( res == 0 && !strcmp( mp.mnt_mountp, path_copy ) ) {
dev_name = sun_block2char( mp.mnt_special );
fprintf( stderr,
"libdvdread: Attempting to use device %s"
" mounted on %s for CSS authentication\n",
dev_name,
mp.mnt_mountp );
auth_drive = DVDOpenImageFile( dev_name, have_css );
break;
}
}
fclose( mntfile );
}
#elif defined(__linux__)
mntfile = fopen( MOUNTED, "r" );
if( mntfile ) {
struct mntent *me;
while( ( me = getmntent( mntfile ) ) ) {
if( !strcmp( me->mnt_dir, path_copy ) ) {
fprintf( stderr,
"libdvdread: Attempting to use device %s"
" mounted on %s for CSS authentication\n",
me->mnt_fsname,
me->mnt_dir );
auth_drive = DVDOpenImageFile( me->mnt_fsname, have_css );
dev_name = strdup(me->mnt_fsname);
break;
}
}
fclose( mntfile );
}
#elif defined(_MSC_VER)
auth_drive = DVDOpenImageFile( path, have_css );
#endif
#ifndef _MSC_VER
if( !dev_name ) {
fprintf( stderr, "libdvdread: Couldn't find device name.\n" );
} else if( !auth_drive ) {
fprintf( stderr, "libdvdread: Device %s inaccessible, "
"CSS authentication not available.\n", dev_name );
}
#else
if( !auth_drive ) {
fprintf( stderr, "libdvdread: Device %s inaccessible, "
"CSS authentication not available.\n", dev_name );
}
#endif
free( dev_name );
free( path_copy );
/**
* If we've opened a drive, just use that.
*/
if( auth_drive ) {
free(path);
return auth_drive;
}
/**
* Otherwise, we now try to open the directory tree instead.
*/
ret_val = DVDOpenPath( path );
free( path );
return ret_val;
}
/* If it's none of the above, screw it. */
fprintf( stderr, "libdvdread: Could not open %s\n", path );
free( path );
return NULL;
}
void DVDClose( dvd_reader_t *dvd )
{
if( dvd ) {
if( dvd->dev ) dvdinput_close( dvd->dev );
if( dvd->path_root ) free( dvd->path_root );
if( dvd->udfcache ) FreeUDFCache( dvd->udfcache );
free( dvd );
}
}
/**
* Open an unencrypted file on a DVD image file.
*/
static dvd_file_t *DVDOpenFileUDF( dvd_reader_t *dvd, char *filename )
{
uint32_t start, len;
dvd_file_t *dvd_file;
start = UDFFindFile( dvd, filename, &len );
if( !start ) {
fprintf( stderr, "libdvdnav:DVDOpenFileUDF:UDFFindFile %s failed\n", filename );
return NULL;
}
dvd_file = (dvd_file_t *) malloc( sizeof( dvd_file_t ) );
if( !dvd_file ) {
fprintf( stderr, "libdvdnav:DVDOpenFileUDF:malloc failed\n" );
return NULL;
}
dvd_file->dvd = dvd;
dvd_file->lb_start = start;
dvd_file->seek_pos = 0;
memset( dvd_file->title_sizes, 0, sizeof( dvd_file->title_sizes ) );
memset( dvd_file->title_devs, 0, sizeof( dvd_file->title_devs ) );
dvd_file->filesize = len / DVD_VIDEO_LB_LEN;
return dvd_file;
}
/**
* Searches for <file> in directory <path>, ignoring case.
* Returns 0 and full filename in <filename>.
* or -1 on file not found.
* or -2 on path not found.
*/
static int findDirFile( const char *path, const char *file, char *filename )
{
DIR *dir;
struct dirent *ent;
dir = opendir( path );
if( !dir ) return -2;
while( ( ent = readdir( dir ) ) != NULL ) {
if( !strcasecmp( ent->d_name, file ) ) {
sprintf( filename, "%s%s%s", path,
( ( path[ strlen( path ) - 1 ] == '/' ) ? "" : "/" ),
ent->d_name );
closedir( dir );
return 0;
}
}
closedir( dir );
return -1;
}
static int findDVDFile( dvd_reader_t *dvd, const char *file, char *filename )
{
char video_path[ PATH_MAX + 1 ];
const char *nodirfile;
int ret;
/* Strip off the directory for our search */
if( !strncasecmp( "/VIDEO_TS/", file, 10 ) ) {
nodirfile = &(file[ 10 ]);
} else {
nodirfile = file;
}
ret = findDirFile( dvd->path_root, nodirfile, filename );
if( ret < 0 ) {
/* Try also with adding the path, just in case. */
sprintf( video_path, "%s/VIDEO_TS/", dvd->path_root );
ret = findDirFile( video_path, nodirfile, filename );
if( ret < 0 ) {
/* Try with the path, but in lower case. */
sprintf( video_path, "%s/video_ts/", dvd->path_root );
ret = findDirFile( video_path, nodirfile, filename );
if( ret < 0 ) {
return 0;
}
}
}
return 1;
}
/**
* Open an unencrypted file from a DVD directory tree.
*/
static dvd_file_t *DVDOpenFilePath( dvd_reader_t *dvd, char *filename )
{
char full_path[ PATH_MAX + 1 ];
dvd_file_t *dvd_file;
struct stat fileinfo;
dvd_input_t dev;
/* Get the full path of the file. */
if( !findDVDFile( dvd, filename, full_path ) ) {
fprintf( stderr, "libdvdnav:DVDOpenFilePath:findDVDFile %s failed\n", filename );
return NULL;
}
dev = dvdinput_open( full_path );
if( !dev ) {
fprintf( stderr, "libdvdnav:DVDOpenFilePath:dvdinput_open %s failed\n", full_path );
return NULL;
}
dvd_file = (dvd_file_t *) malloc( sizeof( dvd_file_t ) );
if( !dvd_file ) {
fprintf( stderr, "libdvdnav:DVDOpenFilePath:dvd_file malloc failed\n" );
dvdinput_close(dev);
return NULL;
}
dvd_file->dvd = dvd;
dvd_file->lb_start = 0;
dvd_file->seek_pos = 0;
memset( dvd_file->title_sizes, 0, sizeof( dvd_file->title_sizes ) );
memset( dvd_file->title_devs, 0, sizeof( dvd_file->title_devs ) );
dvd_file->filesize = 0;
if( stat( full_path, &fileinfo ) < 0 ) {
fprintf( stderr, "libdvdread: Can't stat() %s.\n", filename );
free( dvd_file );
return NULL;
}
dvd_file->title_sizes[ 0 ] = fileinfo.st_size / DVD_VIDEO_LB_LEN;
dvd_file->title_devs[ 0 ] = dev;
dvd_file->filesize = dvd_file->title_sizes[ 0 ];
return dvd_file;
}
static dvd_file_t *DVDOpenVOBUDF( dvd_reader_t *dvd, int title, int menu )
{
char filename[ MAX_UDF_FILE_NAME_LEN ];
uint32_t start, len;
dvd_file_t *dvd_file;
if( title == 0 ) {
sprintf( filename, "/VIDEO_TS/VIDEO_TS.VOB" );
} else {
sprintf( filename, "/VIDEO_TS/VTS_%02d_%d.VOB", title, menu ? 0 : 1 );
}
start = UDFFindFile( dvd, filename, &len );
if( start == 0 ) return NULL;
dvd_file = (dvd_file_t *) malloc( sizeof( dvd_file_t ) );
if( !dvd_file ) return NULL;
dvd_file->dvd = dvd;
/*Hack*/ dvd_file->css_title = title << 1 | menu;
dvd_file->lb_start = start;
dvd_file->seek_pos = 0;
memset( dvd_file->title_sizes, 0, sizeof( dvd_file->title_sizes ) );
memset( dvd_file->title_devs, 0, sizeof( dvd_file->title_devs ) );
dvd_file->filesize = len / DVD_VIDEO_LB_LEN;
/* Calculate the complete file size for every file in the VOBS */
if( !menu ) {
int cur;
for( cur = 2; cur < 10; cur++ ) {
sprintf( filename, "/VIDEO_TS/VTS_%02d_%d.VOB", title, cur );
if( !UDFFindFile( dvd, filename, &len ) ) break;
dvd_file->filesize += len / DVD_VIDEO_LB_LEN;
}
}
if( dvd->css_state == 1 /* Need key init */ ) {
initAllCSSKeys( dvd );
dvd->css_state = 2;
}
/*
if( dvdinput_title( dvd_file->dvd->dev, (int)start ) < 0 ) {
fprintf( stderr, "libdvdread: Error cracking CSS key for %s\n",
filename );
}
*/
return dvd_file;
}
static dvd_file_t *DVDOpenVOBPath( dvd_reader_t *dvd, int title, int menu )
{
char filename[ MAX_UDF_FILE_NAME_LEN ];
char full_path[ PATH_MAX + 1 ];
struct stat fileinfo;
dvd_file_t *dvd_file;
int i;
dvd_file = (dvd_file_t *) malloc( sizeof( dvd_file_t ) );
if( !dvd_file ) return NULL;
dvd_file->dvd = dvd;
/*Hack*/ dvd_file->css_title = title << 1 | menu;
dvd_file->lb_start = 0;
dvd_file->seek_pos = 0;
memset( dvd_file->title_sizes, 0, sizeof( dvd_file->title_sizes ) );
memset( dvd_file->title_devs, 0, sizeof( dvd_file->title_devs ) );
dvd_file->filesize = 0;
if( menu ) {
dvd_input_t dev;
if( title == 0 ) {
sprintf( filename, "VIDEO_TS.VOB" );
} else {
sprintf( filename, "VTS_%02i_0.VOB", title );
}
if( !findDVDFile( dvd, filename, full_path ) ) {
free( dvd_file );
return NULL;
}
dev = dvdinput_open( full_path );
if( dev == NULL ) {
free( dvd_file );
return NULL;
}
if( stat( full_path, &fileinfo ) < 0 ) {
fprintf( stderr, "libdvdread: Can't stat() %s.\n", filename );
dvdinput_close(dev);
free( dvd_file );
return NULL;
}
dvd_file->title_sizes[ 0 ] = fileinfo.st_size / DVD_VIDEO_LB_LEN;
dvd_file->title_devs[ 0 ] = dev;
dvdinput_title( dvd_file->title_devs[0], 0);
dvd_file->filesize = dvd_file->title_sizes[ 0 ];
} else {
for( i = 0; i < TITLES_MAX; ++i ) {
sprintf( filename, "VTS_%02i_%i.VOB", title, i + 1 );
if( !findDVDFile( dvd, filename, full_path ) ) {
break;
}
if( stat( full_path, &fileinfo ) < 0 ) {
fprintf( stderr, "libdvdread: Can't stat() %s.\n", filename );
break;
}
dvd_file->title_sizes[ i ] = fileinfo.st_size / DVD_VIDEO_LB_LEN;
dvd_file->title_devs[ i ] = dvdinput_open( full_path );
dvdinput_title( dvd_file->title_devs[ i ], 0 );
dvd_file->filesize += dvd_file->title_sizes[ i ];
}
if( !dvd_file->title_devs[ 0 ] ) {
free( dvd_file );
return NULL;
}
}
return dvd_file;
}
dvd_file_t *DVDOpenFile( dvd_reader_t *dvd, int titlenum,
dvd_read_domain_t domain )
{
char filename[ MAX_UDF_FILE_NAME_LEN ];
/* Check arguments. */
if( dvd == NULL || titlenum < 0 )
return NULL;
switch( domain ) {
case DVD_READ_INFO_FILE:
if( titlenum == 0 ) {
sprintf( filename, "/VIDEO_TS/VIDEO_TS.IFO" );
} else {
sprintf( filename, "/VIDEO_TS/VTS_%02i_0.IFO", titlenum );
}
break;
case DVD_READ_INFO_BACKUP_FILE:
if( titlenum == 0 ) {
sprintf( filename, "/VIDEO_TS/VIDEO_TS.BUP" );
} else {
sprintf( filename, "/VIDEO_TS/VTS_%02i_0.BUP", titlenum );
}
break;
case DVD_READ_MENU_VOBS:
if( dvd->isImageFile ) {
return DVDOpenVOBUDF( dvd, titlenum, 1 );
} else {
return DVDOpenVOBPath( dvd, titlenum, 1 );
}
break;
case DVD_READ_TITLE_VOBS:
if( titlenum == 0 ) return 0;
if( dvd->isImageFile ) {
return DVDOpenVOBUDF( dvd, titlenum, 0 );
} else {
return DVDOpenVOBPath( dvd, titlenum, 0 );
}
break;
default:
fprintf( stderr, "libdvdread: Invalid domain for file open.\n" );
return NULL;
}
if( dvd->isImageFile ) {
return DVDOpenFileUDF( dvd, filename );
} else {
return DVDOpenFilePath( dvd, filename );
}
}
void DVDCloseFile( dvd_file_t *dvd_file )
{
int i;
if( dvd_file ) {
if( dvd_file->dvd->isImageFile ) {
;
} else {
for( i = 0; i < TITLES_MAX; ++i ) {
if( dvd_file->title_devs[ i ] ) {
dvdinput_close( dvd_file->title_devs[i] );
}
}
}
free( dvd_file );
dvd_file = 0;
}
}
/* Internal, but used from dvd_udf.c */
int UDFReadBlocksRaw( dvd_reader_t *device, uint32_t lb_number,
size_t block_count, unsigned char *data,
int encrypted )
{
int ret;
if( !device->dev ) {
fprintf( stderr, "libdvdread: Fatal error in block read.\n" );
return 0;
}
ret = dvdinput_seek( device->dev, (int) lb_number );
if( ret != (int) lb_number ) {
fprintf( stderr, "libdvdread: Can't seek to block %u\n", lb_number );
return 0;
}
ret = dvdinput_read( device->dev, (char *) data,
(int) block_count, encrypted );
return ret;
}
/* This is using a single input and starting from 'dvd_file->lb_start' offset.
*
* Reads 'block_count' blocks from 'dvd_file' at block offset 'offset'
* into the buffer located at 'data' and if 'encrypted' is set
* descramble the data if it's encrypted. Returning either an
* negative error or the number of blocks read. */
static int DVDReadBlocksUDF( dvd_file_t *dvd_file, uint32_t offset,
size_t block_count, unsigned char *data,
int encrypted )
{
return UDFReadBlocksRaw( dvd_file->dvd, dvd_file->lb_start + offset,
block_count, data, encrypted );
}
/* This is using possibly several inputs and starting from an offset of '0'.
*
* Reads 'block_count' blocks from 'dvd_file' at block offset 'offset'
* into the buffer located at 'data' and if 'encrypted' is set
* descramble the data if it's encrypted. Returning either an
* negative error or the number of blocks read. */
static int DVDReadBlocksPath( dvd_file_t *dvd_file, unsigned int offset,
size_t block_count, unsigned char *data,
int encrypted )
{
int i;
int ret, ret2, off;
ret = 0;
ret2 = 0;
for( i = 0; i < TITLES_MAX; ++i ) {
if( !dvd_file->title_sizes[ i ] ) return 0; /* Past end of file */
if( offset < dvd_file->title_sizes[ i ] ) {
if( ( offset + block_count ) <= dvd_file->title_sizes[ i ] ) {
off = dvdinput_seek( dvd_file->title_devs[ i ], (int)offset );
if( off < 0 || off != (int)offset ) {
fprintf( stderr, "libdvdread: Can't seek to block %d\n",
offset );
return off < 0 ? off : 0;
}
ret = dvdinput_read( dvd_file->title_devs[ i ], data,
(int)block_count, encrypted );
break;
} else {
size_t part1_size = dvd_file->title_sizes[ i ] - offset;
/* FIXME: Really needs to be a while loop.
* (This is only true if you try and read >1GB at a time) */
/* Read part 1 */
off = dvdinput_seek( dvd_file->title_devs[ i ], (int)offset );
if( off < 0 || off != (int)offset ) {
fprintf( stderr, "libdvdread: Can't seek to block %d\n",
offset );
return off < 0 ? off : 0;
}
ret = dvdinput_read( dvd_file->title_devs[ i ], data,
(int)part1_size, encrypted );
if( ret < 0 ) return ret;
/* FIXME: This is wrong if i is the last file in the set.
* also error from this read will not show in ret. */
/* Does the next part exist? If not then return now. */
if( i + 1 >= TITLES_MAX || !dvd_file->title_devs[ i + 1 ] )
return ret;
/* Read part 2 */
off = dvdinput_seek( dvd_file->title_devs[ i + 1 ], 0 );
if( off < 0 || off != 0 ) {
fprintf( stderr, "libdvdread: Can't seek to block %d\n",
0 );
return off < 0 ? off : 0;
}
ret2 = dvdinput_read( dvd_file->title_devs[ i + 1 ],
data + ( part1_size
* (int64_t)DVD_VIDEO_LB_LEN ),
(int)(block_count - part1_size),
encrypted );
if( ret2 < 0 ) return ret2;
break;
}
} else {
offset -= dvd_file->title_sizes[ i ];
}
}
return ret + ret2;
}
/* This is broken reading more than 2Gb at a time is ssize_t is 32-bit. */
ssize_t DVDReadBlocks( dvd_file_t *dvd_file, int offset,
size_t block_count, unsigned char *data )
{
int ret;
/* Check arguments. */
if( dvd_file == NULL || offset < 0 || data == NULL )
return -1;
/* Hack, and it will still fail for multiple opens in a threaded app ! */
if( dvd_file->dvd->css_title != dvd_file->css_title ) {
dvd_file->dvd->css_title = dvd_file->css_title;
if( dvd_file->dvd->isImageFile ) {
dvdinput_title( dvd_file->dvd->dev, (int)dvd_file->lb_start );
}
/* Here each vobu has it's own dvdcss handle, so no need to update
else {
dvdinput_title( dvd_file->title_devs[ 0 ], (int)dvd_file->lb_start );
}*/
}
if( dvd_file->dvd->isImageFile ) {
ret = DVDReadBlocksUDF( dvd_file, (uint32_t)offset,
block_count, data, DVDINPUT_READ_DECRYPT );
} else {
ret = DVDReadBlocksPath( dvd_file, (unsigned int)offset,
block_count, data, DVDINPUT_READ_DECRYPT );
}
return (ssize_t)ret;
}
int32_t DVDFileSeek( dvd_file_t *dvd_file, int32_t offset )
{
/* Check arguments. */
if( dvd_file == NULL || offset < 0 )
return -1;
if( offset > dvd_file->filesize * DVD_VIDEO_LB_LEN ) {
return -1;
}
dvd_file->seek_pos = (uint32_t) offset;
return offset;
}
int DVDFileSeekForce(dvd_file_t *dvd_file, int offset, int force_size)
{
/* Check arguments. */
if( dvd_file == NULL || offset <= 0 )
return -1;
if( dvd_file->dvd->isImageFile ) {
if( force_size < 0 )
force_size = (offset - 1) / DVD_VIDEO_LB_LEN + 1;
if( dvd_file->filesize < force_size ) {
dvd_file->filesize = force_size;
fprintf(stderr, "libdvdread: Ignored size of file indicated in UDF.\n");
}
}
if( offset > dvd_file->filesize * DVD_VIDEO_LB_LEN )
return -1;
dvd_file->seek_pos = (uint32_t) offset;
return offset;
}
ssize_t DVDReadBytes( dvd_file_t *dvd_file, void *data, size_t byte_size )
{
unsigned char *secbuf_base, *secbuf;
unsigned int numsec, seek_sector, seek_byte;
int ret;
/* Check arguments. */
if( dvd_file == NULL || data == NULL )
return -1;
seek_sector = dvd_file->seek_pos / DVD_VIDEO_LB_LEN;
seek_byte = dvd_file->seek_pos % DVD_VIDEO_LB_LEN;
numsec = ( ( seek_byte + byte_size ) / DVD_VIDEO_LB_LEN ) +
( ( ( seek_byte + byte_size ) % DVD_VIDEO_LB_LEN ) ? 1 : 0 );
secbuf_base = (unsigned char *) malloc( numsec * DVD_VIDEO_LB_LEN + 2048 );
secbuf = (unsigned char *)(((uintptr_t)secbuf_base & ~((uintptr_t)2047)) + 2048);
if( !secbuf_base ) {
fprintf( stderr, "libdvdread: Can't allocate memory "
"for file read!\n" );
return 0;
}
if( dvd_file->dvd->isImageFile ) {
ret = DVDReadBlocksUDF( dvd_file, (uint32_t) seek_sector,
(size_t) numsec, secbuf, DVDINPUT_NOFLAGS );
} else {
ret = DVDReadBlocksPath( dvd_file, seek_sector,
(size_t) numsec, secbuf, DVDINPUT_NOFLAGS );
}
if( ret != (int) numsec ) {
free( secbuf_base );
return ret < 0 ? ret : 0;
}
memcpy( data, &(secbuf[ seek_byte ]), byte_size );
free( secbuf_base );
DVDFileSeekForce(dvd_file, dvd_file->seek_pos + byte_size, -1);
return byte_size;
}
ssize_t DVDFileSize( dvd_file_t *dvd_file )
{
/* Check arguments. */
if( dvd_file == NULL )
return -1;
return dvd_file->filesize;
}
int DVDDiscID( dvd_reader_t *dvd, unsigned char *discid )
{
struct md5_ctx ctx;
int title;
int nr_of_files = 0;
/* Check arguments. */
if( dvd == NULL || discid == NULL )
return 0;
/* Go through the first 10 IFO:s, in order,
* and md5sum them, i.e VIDEO_TS.IFO and VTS_0?_0.IFO */
md5_init_ctx( &ctx );
for( title = 0; title < 10; title++ ) {
dvd_file_t *dvd_file = DVDOpenFile( dvd, title, DVD_READ_INFO_FILE );
if( dvd_file != NULL ) {
ssize_t bytes_read;
size_t file_size = dvd_file->filesize * DVD_VIDEO_LB_LEN;
char *buffer_base = malloc( file_size + 2048 );
char *buffer = (char *)(((uintptr_t)buffer_base & ~((uintptr_t)2047)) + 2048);
if( buffer_base == NULL ) {
DVDCloseFile( dvd_file );
fprintf( stderr, "libdvdread: DVDDiscId, failed to "
"allocate memory for file read!\n" );
return -1;
}
bytes_read = DVDReadBytes( dvd_file, buffer, file_size );
if( bytes_read != file_size ) {
fprintf( stderr, "libdvdread: DVDDiscId read returned %zd bytes"
", wanted %zd\n", bytes_read, file_size );
DVDCloseFile( dvd_file );
free( buffer_base );
return -1;
}
md5_process_bytes( buffer, file_size, &ctx );
DVDCloseFile( dvd_file );
free( buffer_base );
nr_of_files++;
}
}
md5_finish_ctx( &ctx, discid );
if(!nr_of_files)
return -1;
return 0;
}
int DVDISOVolumeInfo( dvd_reader_t *dvd,
char *volid, unsigned int volid_size,
unsigned char *volsetid, unsigned int volsetid_size )
{
unsigned char *buffer, *buffer_base;
int ret;
/* Check arguments. */
if( dvd == NULL )
return 0;
if( dvd->dev == NULL ) {
/* No block access, so no ISO... */
return -1;
}
buffer_base = malloc( DVD_VIDEO_LB_LEN + 2048 );
buffer = (unsigned char *)(((uintptr_t)buffer_base & ~((uintptr_t)2047)) + 2048);
if( buffer_base == NULL ) {
fprintf( stderr, "libdvdread: DVDISOVolumeInfo, failed to "
"allocate memory for file read!\n" );
return -1;
}
ret = UDFReadBlocksRaw( dvd, 16, 1, buffer, 0 );
if( ret != 1 ) {
fprintf( stderr, "libdvdread: DVDISOVolumeInfo, failed to "
"read ISO9660 Primary Volume Descriptor!\n" );
free( buffer_base );
return -1;
}
if( (volid != NULL) && (volid_size > 0) ) {
unsigned int n;
for(n = 0; n < 32; n++) {
if(buffer[40+n] == 0x20) {
break;
}
}
if(volid_size > n+1) {
volid_size = n+1;
}
memcpy(volid, &buffer[40], volid_size-1);
volid[volid_size-1] = '\0';
}
if( (volsetid != NULL) && (volsetid_size > 0) ) {
if(volsetid_size > 128) {
volsetid_size = 128;
}
memcpy(volsetid, &buffer[190], volsetid_size);
}
free( buffer_base );
return 0;
}
int DVDUDFVolumeInfo( dvd_reader_t *dvd,
char *volid, unsigned int volid_size,
unsigned char *volsetid, unsigned int volsetid_size )
{
int ret;
/* Check arguments. */
if( dvd == NULL )
return -1;
if( dvd->dev == NULL ) {
/* No block access, so no UDF VolumeSet Identifier */
return -1;
}
if( (volid != NULL) && (volid_size > 0) ) {
ret = UDFGetVolumeIdentifier(dvd, volid, volid_size);
if(!ret) {
return -1;
}
}
if( (volsetid != NULL) && (volsetid_size > 0) ) {
ret = UDFGetVolumeSetIdentifier(dvd, volsetid, volsetid_size);
if(!ret) {
return -1;
}
}
return 0;
}