diff options
Diffstat (limited to 'libdvdread/dvd_reader.c')
| -rw-r--r-- | libdvdread/dvd_reader.c | 1156 |
1 files changed, 1156 insertions, 0 deletions
diff --git a/libdvdread/dvd_reader.c b/libdvdread/dvd_reader.c new file mode 100644 index 0000000000..996477ef2c --- /dev/null +++ b/libdvdread/dvd_reader.c @@ -0,0 +1,1156 @@ +/* + * 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 + +#if defined(__MINGW32__) && (__MINGW32_MAJOR_VERSION <= 3) && (__MINGW32_MINOR_VERSION < 10) +#include <sys/timeb.h> +static void gettimeofday(struct timeval* t,void* timezone){ + struct timeb timebuffer; + ftime( &timebuffer ); + t->tv_sec=timebuffer.time; + t->tv_usec=1000*timebuffer.millitm; +} +#endif + +#include "dvd_udf.h" +#include "dvd_input.h" +#include "dvd_reader.h" +#include "md5.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; +}; + +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; +}; + +/** + * 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; +} + + +#ifndef HAVE_MPLAYER + #include "get_path.c" +#else + extern char * get_path( const char * filename ); +#endif + +//extern char * dvdcss_cache_dir; + +/** + * 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 0; + } + + dvd = (dvd_reader_t *) malloc( sizeof( dvd_reader_t ) ); + if( !dvd ) return 0; + dvd->isImageFile = 1; + dvd->dev = dev; + dvd->path_root = 0; + + 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 0; + dvd->isImageFile = 0; + dvd->dev = 0; + dvd->path_root = strdup( path_root ); + + 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 ) +#if defined(__FreeBSD__) +{ + 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__ */ +#endif + +dvd_reader_t *DVDOpen( const char *path ) +{ + struct stat fileinfo; + int ret, have_css; + char *dev_name = 0; + + if( path == NULL ) + return 0; + +#ifdef WIN32 + /* 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 ) { + /* If we can't stat the file, give up */ + fprintf( stderr, "libdvdread: Can't stat %s\n", path ); + perror(""); + return 0; + } + } + + /* 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. + */ +#if defined(__sun) + return DVDOpenImageFile( sun_block2char( path ), have_css ); +#elif defined(SYS_BSD) + return DVDOpenImageFile( bsd_block2char( path ), have_css ); +#else + return DVDOpenImageFile( path, have_css ); +#endif + + } 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; + + /* 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 = getcwd( NULL, PATH_MAX ); +#ifndef __MINGW32__ + fchdir( cdir ); +#endif + close( cdir ); + if( new_path ) { + free( path_copy ); + path_copy = new_path; + } + } + } + + /** + * 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 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__) || defined(__CYGWIN__) + 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(__MINGW32__) + dev_name = strdup(path); + auth_drive = DVDOpenImageFile( path, have_css ); +#endif + 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 ); + } + + 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. */ + 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->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 ) 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 ); + return 0; + } + } + + 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 ) { + 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 ) { + 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 ) { + 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 ) + 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 < 9; ++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; + } + + 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. */ +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 < 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 ) { + 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( !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; +} + +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; +} + +ssize_t DVDReadBytes( dvd_file_t *dvd_file, void *data, size_t byte_size ) +{ + unsigned char *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 = (unsigned char *) malloc( numsec * DVD_VIDEO_LB_LEN ); + if( !secbuf ) { + 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 ); + return ret < 0 ? ret : 0; + } + + memcpy( data, &(secbuf[ seek_byte ]), byte_size ); + free( secbuf ); + + 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; + + /* 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 = malloc( file_size ); + + if( buffer == NULL ) { + 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 %d bytes" + ", wanted %d\n", bytes_read, file_size ); + DVDCloseFile( dvd_file ); + return -1; + } + + md5_process_bytes( buffer, file_size, &ctx ); + + DVDCloseFile( dvd_file ); + free( buffer ); + } + } + md5_finish_ctx( &ctx, discid ); + + return 0; +} + + +int DVDISOVolumeInfo( dvd_reader_t *dvd, + char *volid, unsigned int volid_size, + unsigned char *volsetid, unsigned int volsetid_size ) +{ + unsigned char *buffer; + int ret; + + /* Check arguments. */ + if( dvd == NULL ) + return 0; + + if( dvd->dev == NULL ) { + /* No block access, so no ISO... */ + return -1; + } + + buffer = malloc( DVD_VIDEO_LB_LEN ); + if( buffer == 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" ); + 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_ |