RepoMirrors
/
mpv
mirror of https://github.com/mpv-player/mpv
1
0
Fork 0
Code Issues Releases Wiki Activity
mpv/libdvdread/dvd_reader.c

1613 lines
42 KiB
C
Raw Blame History

/* -*- c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
* Copyright (C) 2001, 2002, 2003 Billy Biggs <vektor@dumbterm.net>,
* Håkan Hjort <d95hjort@dtek.chalmers.se>,
* Björn Englund <d4bjorn@dtek.chalmers.se>
*
* Modified for use with MPlayer, changes contained in libdvdread_changes.diff.
* detailed changelog at http://svn.mplayerhq.hu/mplayer/trunk/
* $Id$
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at
* your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, 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>
#if defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__) || defined(__bsdi__) || defined(__DARWIN__) || defined(__DragonFly__)
#define SYS_BSD 1
#endif
#if defined(__sun)
#include <sys/mnttab.h>
#elif defined(hpux)
#include </usr/conf/h/mnttab.h>
#elif defined(SYS_BSD)
#include <fstab.h>
#elif defined(__linux__) || defined(__CYGWIN__)
#include <mntent.h>
#endif
#include "dvd_reader.h"
#include "dvd_input.h"
#include "dvd_udf.h"
#include "md5.h"
#include "dvdread_internal.h"
#define DEFAULT_UDF_CACHE_LEVEL 0
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;
/* block aligned malloc */
void *align;
/* error message verbosity level */
int verbose;
};
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[ 9 ];
dvd_input_t title_devs[ 9 ];
/* Calculated at open-time, size in blocks. */
ssize_t filesize;
};
#define DVDREAD_VERBOSE_DEFAULT 0
int get_verbose(void)
{
char *dvdread_verbose;
int verbose;
dvdread_verbose = getenv("DVDREAD_VERBOSE");
if(dvdread_verbose) {
verbose = (int)strtol(dvdread_verbose, NULL, 0);
} else {
verbose = DVDREAD_VERBOSE_DEFAULT;
}
return verbose;
}
int dvdread_verbose(dvd_reader_t *dvd)
{
return dvd->verbose;
}
dvd_reader_t *device_of_file(dvd_file_t *file)
{
return file->dvd;
}
/**
* Returns the compiled version. (DVDREAD_VERSION as an int)
*/
int DVDVersion(void)
{
return DVDREAD_VERSION;
}
/**
* 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;
}
void *GetAlignHandle(dvd_reader_t *device)
{
struct dvd_reader_s *dev = (struct dvd_reader_s *)device;
return dev->align;
}
void SetAlignHandle(dvd_reader_t *device, void *align)
{
struct dvd_reader_s *dev = (struct dvd_reader_s *)device;
dev->align = align;
}
/* 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;
if(dvd->verbose >= 1) {
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. */
if(dvd->verbose >= 1) {
fprintf( stderr, "libdvdread: Get key for %s at 0x%08x\n",
filename, start );
}
if( dvdinput_title( dvd->dev, (int)start ) < 0 ) {
if(dvd->verbose >= 0) {
fprintf( stderr, "libdvdread: Error cracking CSS key for %s (0x%08x)\n", filename, start);
}
}
gettimeofday( &t_e, NULL );
if(dvd->verbose >= 1) {
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. */
if(dvd->verbose >= 1) {
fprintf( stderr, "libdvdread: Get key for %s at 0x%08x\n",
filename, start );
}
if( dvdinput_title( dvd->dev, (int)start ) < 0 ) {
if(dvd->verbose >= 0) {
fprintf( stderr, "libdvdread: Error cracking CSS key for %s (0x%08x)!!\n", filename, start);
}
}
gettimeofday( &t_e, NULL );
if(dvd->verbose >= 1) {
fprintf( stderr, "libdvdread: Elapsed time %ld\n",
(long int) t_e.tv_sec - t_s.tv_sec );
}
}
title--;
if(dvd->verbose >= 1) {
fprintf( stderr, "libdvdread: Found %d VTS's\n", title );
}
gettimeofday(&all_e, NULL);
if(dvd->verbose >= 1) {
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.
* Checks if the root directory in the udf image file can be found.
* If not it assumes this isn't a valid udf image and returns NULL
*/
static dvd_reader_t *DVDOpenImageFile( const char *location, int have_css )
{
dvd_reader_t *dvd;
dvd_input_t dev;
int verbose;
verbose = get_verbose();
dev = dvdinput_open( location );
if( !dev ) {
if(verbose >= 1) {
fprintf( stderr, "libdvdread: Can't open '%s' for reading: %s\n",
location, strerror(errno));
}
return NULL;
}
dvd = (dvd_reader_t *) malloc( sizeof( dvd_reader_t ) );
if( !dvd ) {
int tmp_errno = errno;
dvdinput_close(dev);
errno = tmp_errno;
return NULL;
}
dvd->verbose = verbose;
dvd->isImageFile = 1;
dvd->dev = dev;
dvd->path_root = NULL;
dvd->udfcache_level = DEFAULT_UDF_CACHE_LEVEL;
dvd->udfcache = NULL;
dvd->align = 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;
/* sanity check, is it a valid UDF image, can we find the root dir */
if(!UDFFindFile(dvd, "/", NULL)) {
dvdinput_close(dvd->dev);
if(dvd->udfcache) {
FreeUDFCache(dvd, dvd->udfcache);
}
if(dvd->align) {
if(dvd->verbose >= 0) {
fprintf(stderr, "libdvdread: DVDOpenImageFile(): Memory leak in align functions 1\n");
}
}
free(dvd);
return NULL;
}
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->verbose = get_verbose();
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->align = 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
update: FreeBSD and DragonFly no longer uses the prefix so don't add it.
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)
returns a string allocated with strdup which should be free()'d when
no longer used.
*/
static char *bsd_block2char( const char *path )
{
#if defined(__FreeBSD__) || defined(__DragonFly__)
return (char *) strdup( path );
#else
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 /* __FreeBSD__ || __DragonFly__ */
}
#endif
dvd_reader_t *DVDOpen( const char *path )
{
struct stat fileinfo;
int ret, have_css;
char *dev_name = NULL;
int internal_errno = 0;
int verbose;
if( path == NULL ) {
errno = EINVAL;
return NULL;
}
verbose = get_verbose();
#if defined(__CYGWIN__) || defined(__MINGW32__)
/* Stat doesn't work on devices under mingwin/cygwin. */
if( path[0] && path[1] == ':' && path[2] == '\0' )
{
/* Don't try to stat the file */
fileinfo.st_mode = S_IFBLK;
}
else
#endif
{
ret = stat( path, &fileinfo );
if( ret < 0 ) {
int tmp_errno = errno;
/* If we can't stat the file, give up */
if(verbose >= 1) {
fprintf( stderr, "libdvdread: Can't stat '%s': %s\n",
path, strerror(errno));
}
errno = tmp_errno;
return NULL;
}
}
/* Try to open libdvdcss or fall back to standard functions */
have_css = dvdinput_setup();
/* 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.
*/
dvd_reader_t *dvd = NULL;
#if defined(__sun)
dev_name = sun_block2char( path );
#elif defined(SYS_BSD)
dev_name = bsd_block2char( path );
#else
dev_name = strdup( path );
#endif
dvd = DVDOpenImageFile( dev_name, have_css );
free( dev_name );
return dvd;
} 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__) || defined(__CYGWIN__)
FILE *mntfile;
#endif
/* XXX: We should scream real loud here. */
if( !(path_copy = strdup( path ) ) ) return 0;
/* don't have fchdir, and getcwd( NULL, ... ) is strange */
#if !(defined(__CYGWIN__) || defined(__MINGW32__))
/* Resolve any symlinks and get the absolut dir name. */
{
char *new_path;
char *current_path;
current_path = malloc(PATH_MAX);
if(current_path) {
if(!getcwd(current_path, PATH_MAX)) {
free(current_path);
current_path = NULL;
}
}
if(current_path) {
chdir( path_copy );
new_path = malloc(PATH_MAX);
if(new_path) {
if(!getcwd(new_path, PATH_MAX )) {
free(new_path);
new_path = NULL;
}
}
chdir(current_path);
free(current_path);
if( new_path ) {
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 ) >= 9 ) {
if( !strcasecmp( &(path_copy[ strlen( path_copy ) - 9 ]),
"/video_ts" ) ) {
path_copy[ strlen( path_copy ) - 9 ] = '\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 );
if(verbose >= 1) {
fprintf( stderr,
"libdvdread: Attempting to use device %s"
" mounted on %s%s\n",
dev_name,
fe->fs_file,
have_css ? " for CSS authentication" : "");
}
auth_drive = DVDOpenImageFile( dev_name, have_css );
if(!auth_drive) {
internal_errno = errno;
}
}
#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 );
if(verbose >= 1) {
fprintf( stderr,
"libdvdread: Attempting to use device %s"
" mounted on %s%s\n",
dev_name,
mp.mnt_mountp,
have_css ? " for CSS authentication" : "");
}
auth_drive = DVDOpenImageFile( dev_name, have_css );
if(!auth_drive) {
internal_errno = errno;
}
break;
}
}
fclose( mntfile );
}
#elif defined(__linux__) || defined(__CYGWIN__)
mntfile = fopen( MOUNTED, "r" );
if( mntfile ) {
struct mntent *me;
while( ( me = getmntent( mntfile ) ) ) {
if( !strcmp( me->mnt_dir, path_copy ) ) {
if(verbose >= 1) {
fprintf( stderr,
"libdvdread: Attempting to use device %s"
" mounted on %s%s\n",
me->mnt_fsname,
me->mnt_dir,
have_css ? " for CSS authentication" : "");
}
auth_drive = DVDOpenImageFile( me->mnt_fsname, have_css );
if(!auth_drive) {
internal_errno = errno;
}
dev_name = strdup(me->mnt_fsname);
break;
}
}
fclose( mntfile );
}
#elif defined(__MINGW32__)
dev_name = strdup(path);
auth_drive = DVDOpenImageFile( path, have_css );
#endif
if( !dev_name ) {
if(verbose >= 1) {
fprintf( stderr, "libdvdread: Couldn't find device name.\n" );
}
} else if( !auth_drive ) {
if(verbose >= 1) {
fprintf( stderr, "libdvdread: Device %s inaccessible%s: %s\n",
dev_name,
have_css ? ", CSS authentication not available" : "",
strerror(internal_errno));
}
}
free( dev_name );
free( path_copy );
/**
* If we've opened a drive, just use that.
*/
if( auth_drive ) {
return auth_drive;
}
/**
* Otherwise, we now try to open the directory tree instead.
*/
return DVDOpenPath( path );
}
/* If it's none of the above, screw it. */
if(verbose >= 1) {
fprintf( stderr, "libdvdread: Could not open %s\n", path );
}
return 0;
}
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, dvd->udfcache );
if(dvd->align) {
if(dvd->verbose >= 0) {
fprintf(stderr, "libdvdread: DVDClose(): Memory leak in align functions\n");
}
}
free( dvd );
}
}
void DVDInit(void)
{
dvdinput_setup();
}
void DVDFinish(void)
{
dvdinput_free();
}
/**
* 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 ) return 0;
dvd_file = (dvd_file_t *) malloc( sizeof( dvd_file_t ) );
if( !dvd_file ) return 0;
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 ) ) return 0;
dev = dvdinput_open( full_path );
if( !dev ) return 0;
dvd_file = (dvd_file_t *) malloc( sizeof( dvd_file_t ) );
if( !dvd_file ) return 0;
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 ) {
if(dvd->verbose >= 1) {
fprintf( stderr, "libdvdread: Can't stat() %s.\n", filename );
}
free( dvd_file );
return 0;
}
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 0;
dvd_file = (dvd_file_t *) malloc( sizeof( dvd_file_t ) );
if( !dvd_file ) return 0;
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 0;
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 0;
}
dev = dvdinput_open( full_path );
if( dev == NULL ) {
free( dvd_file );
return 0;
}
if( stat( full_path, &fileinfo ) < 0 ) {
if(dvd->verbose >= 1) {
fprintf( stderr, "libdvdread: Can't stat() %s.\n", filename );
}
free( dvd_file );
return 0;
}
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 < 9; ++i ) {
sprintf( filename, "VTS_%02i_%i.VOB", title, i + 1 );
if( !findDVDFile( dvd, filename, full_path ) ) {
break;
}
if( stat( full_path, &fileinfo ) < 0 ) {
if(dvd->verbose >= 1) {
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 0;
}
}
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 ) {
errno = EINVAL;
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:
if(dvd->verbose >= 1) {
fprintf( stderr, "libdvdread: Invalid domain for file open.\n" );
}
errno = EINVAL;
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 < 9; ++i ) {
if( dvd_file->title_devs[ i ] ) {
dvdinput_close( dvd_file->title_devs[i] );
}
}
}
free( dvd_file );
dvd_file = 0;
}
}
static int DVDFileStatVOBUDF(dvd_reader_t *dvd, int title,
int menu, dvd_stat_t *statbuf)
{
char filename[ MAX_UDF_FILE_NAME_LEN ];
uint32_t size;
off_t tot_size;
off_t parts_size[9];
int nr_parts = 0;
int n;
if( title == 0 ) {
sprintf( filename, "/VIDEO_TS/VIDEO_TS.VOB" );
} else {
sprintf( filename, "/VIDEO_TS/VTS_%02d_%d.VOB", title, menu ? 0 : 1 );
}
if(!UDFFindFile( dvd, filename, &size )) {
return -1;
}
tot_size = size;
nr_parts = 1;
parts_size[0] = size;
if( !menu ) {
int cur;
for( cur = 2; cur < 10; cur++ ) {
sprintf( filename, "/VIDEO_TS/VTS_%02d_%d.VOB", title, cur );
if( !UDFFindFile( dvd, filename, &size ) ) {
break;
}
parts_size[nr_parts] = size;
tot_size += size;
nr_parts++;
}
}
statbuf->size = tot_size;
statbuf->nr_parts = nr_parts;
for(n = 0; n < nr_parts; n++) {
statbuf->parts_size[n] = parts_size[n];
}
return 0;
}
static int DVDFileStatVOBPath( dvd_reader_t *dvd, int title,
int menu, dvd_stat_t *statbuf )
{
char filename[ MAX_UDF_FILE_NAME_LEN ];
char full_path[ PATH_MAX + 1 ];
struct stat fileinfo;
off_t tot_size;
off_t parts_size[9];
int nr_parts = 0;
int n;
if( title == 0 ) {
sprintf( filename, "VIDEO_TS.VOB" );
} else {
sprintf( filename, "VTS_%02d_%d.VOB", title, menu ? 0 : 1 );
}
if( !findDVDFile( dvd, filename, full_path ) ) {
return -1;
}
if( stat( full_path, &fileinfo ) < 0 ) {
if(dvd->verbose >= 1) {
fprintf( stderr, "libdvdread: Can't stat() %s.\n", filename );
}
return -1;
}
tot_size = fileinfo.st_size;
nr_parts = 1;
parts_size[0] = fileinfo.st_size;
if( !menu ) {
int cur;
for( cur = 2; cur < 10; cur++ ) {
sprintf( filename, "VTS_%02d_%d.VOB", title, cur );
if( !findDVDFile( dvd, filename, full_path ) ) {
break;
}
if( stat( full_path, &fileinfo ) < 0 ) {
if(dvd->verbose >= 1) {
fprintf( stderr, "libdvdread: Can't stat() %s.\n", filename );
}
break;
}
parts_size[nr_parts] = fileinfo.st_size;
tot_size += parts_size[nr_parts];
nr_parts++;
}
}
statbuf->size = tot_size;
statbuf->nr_parts = nr_parts;
for(n = 0; n < nr_parts; n++) {
statbuf->parts_size[n] = parts_size[n];
}
return 0;
}
int DVDFileStat(dvd_reader_t *dvd, int titlenum,
dvd_read_domain_t domain, dvd_stat_t *statbuf)
{
char filename[ MAX_UDF_FILE_NAME_LEN ];
char full_path[ PATH_MAX + 1 ];
struct stat fileinfo;
uint32_t size;
/* Check arguments. */
if( dvd == NULL || titlenum < 0 ) {
errno = EINVAL;
return -1;
}
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 DVDFileStatVOBUDF( dvd, titlenum, 1, statbuf );
} else {
return DVDFileStatVOBPath( dvd, titlenum, 1, statbuf );
}
break;
case DVD_READ_TITLE_VOBS:
if( titlenum == 0 ) {
return -1;
}
if( dvd->isImageFile ) {
return DVDFileStatVOBUDF( dvd, titlenum, 0, statbuf );
} else {
return DVDFileStatVOBPath( dvd, titlenum, 0, statbuf );
}
break;
default:
if(dvd->verbose >= 1) {
fprintf( stderr, "libdvdread: Invalid domain for file stat.\n" );
}
errno = EINVAL;
return -1;
}
if( dvd->isImageFile ) {
if( UDFFindFile( dvd, filename, &size ) ) {
statbuf->size = size;
statbuf->nr_parts = 1;
statbuf->parts_size[0] = size;
return 0;
}
} else {
if( findDVDFile( dvd, filename, full_path ) ) {
if( stat( full_path, &fileinfo ) < 0 ) {
if(dvd->verbose >= 1) {
fprintf( stderr, "libdvdread: Can't stat() %s.\n", filename );
}
} else {
statbuf->size = fileinfo.st_size;
statbuf->nr_parts = 1;
statbuf->parts_size[0] = statbuf->size;
return 0;
}
}
}
return -1;
}
/**
* Internal, but used from dvd_udf.c
*
* @param device A read handle.
* @param lb_number Logical block number to start read from.
* @param block_count Number of logical blocks to read.
* @param data Pointer to buffer where read data should be stored.
* This buffer must be large enough to hold lb_number*2048 bytes.
* The pointer must be aligned to the logical block size when
* reading from a raw/O_DIRECT device.
* @param encrypted 0 if no decryption shall be performed,
* 1 if decryption shall be performed
* @param return Returns number of blocks read on success, negative on error
*/
int UDFReadBlocksRaw( dvd_reader_t *device, uint32_t lb_number,
size_t block_count, unsigned char *data,
int encrypted )
{
int ret;
if( !device->dev ) {
if(device->verbose >= 1) {
fprintf( stderr, "libdvdread: Fatal error in block read.\n" );
}
return 0;
}
ret = dvdinput_seek( device->dev, (int) lb_number );
if( ret != (int) lb_number ) {
if(device->verbose >= 1) {
fprintf( stderr,
"libdvdread: UDFReadBlocksRaw: Can't seek to block %u\n",
lb_number );
}
return 0;
}
return dvdinput_read( device->dev, (char *) data,
(int) block_count, encrypted );
}
/**
* 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.
*
* @param data Pointer to buffer where read data should be placed.
* This buffer must be large enough to hold block_count*2048 bytes.
* The pointer must be aligned to 2048 bytes when reading from
* a raw/O_DIRECT device.
* @return Returns the number of blocks read on success or a negative error.
*/
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'.
* data must be aligned to logical block size (2048 bytes) of the device
* for raw/O_DIRECT devices to work
* 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.
*
* @param dvd_file A file read handle.
* @param offset Block offset from start of file.
* @return Returns number of blocks read on success, negative on error.
*/
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 < 9; ++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 ) {
if(dvd_file->dvd->verbose >= 1) {
fprintf( stderr, "libdvdread: DVDReadBlocksPath1: 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 ) {
if(dvd_file->dvd->verbose >= 1) {
fprintf( stderr, "libdvdread: DVDReadBlocksPath2: 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( !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 ) {
if(dvd_file->dvd->verbose >= 1) {
fprintf( stderr, "libdvdread: DVDReadBlocksPath3: 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 if 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;
}
int DVDFileSeek( dvd_file_t *dvd_file, int 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;
}
#ifndef HAVE_UINTPTR_T
#warning "Assuming that (unsigned long) can hold (void *)"
typedef unsigned long uintptr_t;
#endif
#define DVD_ALIGN(ptr) (void *)((((uintptr_t)(ptr)) + (DVD_VIDEO_LB_LEN-1)) \
/ DVD_VIDEO_LB_LEN * DVD_VIDEO_LB_LEN)
ssize_t DVDReadBytes( dvd_file_t *dvd_file, void *data, size_t byte_size )
{
unsigned char *secbuf_start;
unsigned char *secbuf; //must be aligned to 2048-bytes for raw/O_DIRECT
unsigned int numsec, seek_sector, seek_byte;
int ret;
/* Check arguments. */
if( dvd_file == NULL || data == NULL ) {
errno = EINVAL;
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 );
/* must align to 2048 bytes if we are reading from raw/O_DIRECT */
secbuf_start = (unsigned char *) malloc( (numsec+1) * DVD_VIDEO_LB_LEN );
if( !secbuf_start ) {
/* errno will be set to ENOMEM by malloc */
return -1;
}
secbuf = DVD_ALIGN(secbuf_start);
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_start );
return ret < 0 ? ret : 0;
}
memcpy( data, &(secbuf[ seek_byte ]), byte_size );
free( secbuf_start );
dvd_file->seek_pos += byte_size;
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;
int tmp_errno;
int nofiles_errno = ENOENT;
/* Check arguments. */
if( dvd == NULL || discid == NULL ) {
errno = EINVAL;
return -1;
}
/* 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 = malloc( file_size );
nr_of_files++;
if( buffer == NULL ) {
/* errno will be set to ENOMEM by malloc */
return -1;
}
bytes_read = DVDReadBytes( dvd_file, buffer, file_size );
if( bytes_read != file_size ) {
tmp_errno = errno;
if(dvd->verbose >= 1) {
fprintf( stderr, "libdvdread: DVDDiscId read returned %d bytes"
", wanted %d\n", (int)bytes_read, (int)file_size );
}
free(buffer);
DVDCloseFile( dvd_file );
errno = tmp_errno;
return -1;
}
md5_process_bytes( buffer, file_size, &ctx );
DVDCloseFile( dvd_file );
free( buffer );
} else {
if(errno != ENOENT) {
nofiles_errno = errno;
}
}
}
md5_finish_ctx( &ctx, discid );
if(nr_of_files == 0) {
errno = nofiles_errno;
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; /* must be aligned to 2048 for raw/O_DIRECT */
unsigned char *buffer_start;
int ret;
/* Check arguments. */
if( dvd == NULL ) {
errno = EINVAL;
return -1;
}
if( dvd->dev == NULL ) {
/* No block access, so no ISO... */
errno = EINVAL;
return -1;
}
buffer_start = malloc( 2 * DVD_VIDEO_LB_LEN );
if( buffer_start == NULL ) {
return -1;
}
buffer = DVD_ALIGN(buffer_start);
ret = UDFReadBlocksRaw( dvd, 16, 1, buffer, 0 );
if( ret != 1 ) {
if(dvd->verbose >= 1) {
fprintf( stderr, "libdvdread: DVDISOVolumeInfo, failed to "
"read ISO9660 Primary Volume Descriptor!\n" );
}
free(buffer_start);
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_start);
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;
}
Reference in New Issue View Git Blame Copy Permalink