From b0aad0a966223e66badae8998b35500741e8a7a3 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 21 Apr 2024 13:17:32 +0200 Subject: Adding upstream version 1.4.3. Signed-off-by: Daniel Baumann --- src/common.h | 72 ++ src/css.c | 1756 +++++++++++++++++++++++++++++++++++++++++++++++ src/css.h | 65 ++ src/csstables.h | 396 +++++++++++ src/device.c | 889 ++++++++++++++++++++++++ src/device.h | 56 ++ src/dvdcss/dvdcss.h | 113 +++ src/dvdcss/version.h | 37 + src/dvdcss/version.h.in | 37 + src/error.c | 66 ++ src/ioctl.c | 1563 +++++++++++++++++++++++++++++++++++++++++ src/ioctl.h | 276 ++++++++ src/libdvdcss.c | 863 +++++++++++++++++++++++ src/libdvdcss.h | 88 +++ src/libdvdcss.pc.in | 10 + 15 files changed, 6287 insertions(+) create mode 100644 src/common.h create mode 100644 src/css.c create mode 100644 src/css.h create mode 100644 src/csstables.h create mode 100644 src/device.c create mode 100644 src/device.h create mode 100644 src/dvdcss/dvdcss.h create mode 100644 src/dvdcss/version.h create mode 100644 src/dvdcss/version.h.in create mode 100644 src/error.c create mode 100644 src/ioctl.c create mode 100644 src/ioctl.h create mode 100644 src/libdvdcss.c create mode 100644 src/libdvdcss.h create mode 100644 src/libdvdcss.pc.in (limited to 'src') diff --git a/src/common.h b/src/common.h new file mode 100644 index 0000000..1e15a18 --- /dev/null +++ b/src/common.h @@ -0,0 +1,72 @@ +/***************************************************************************** + * common.h: common definitions + * Collection of useful common types and macros definitions + ***************************************************************************** + * Copyright (C) 1998, 1999, 2000 VideoLAN + * + * Authors: Sam Hocevar + * Vincent Seguin + * Gildas Bazin + * + * libdvdcss 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. + * + * libdvdcss 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 libdvdcss; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + *****************************************************************************/ + +#ifndef DVDCSS_COMMON_H +#define DVDCSS_COMMON_H + +#if defined( _WIN32 ) +# include /* _lseeki64 */ + +/* several type definitions */ +# if defined( __MINGW32__ ) +# undef lseek +# define lseek _lseeki64 +# if !defined( _OFF_T_ ) +typedef long long _off_t; +typedef _off_t off_t; +# define _OFF_T_ +# else +# define off_t long long +# endif +# endif /* defined( __MINGW32__ ) */ + +# if defined( _MSC_VER ) +# undef lseek +# define lseek _lseeki64 +# if !defined( _OFF_T_DEFINED ) +typedef __int64 off_t; +# define _OFF_T_DEFINED +# else +# define off_t __int64 +# endif +# define ssize_t SSIZE_T +# define snprintf _snprintf +# define strdup _strdup +# define open _open +# define close _close +# define read _read +# define write _write +# endif /* defined( _MSC_VER ) */ + +#endif /* defined( _WIN32 ) */ + +#ifdef __ANDROID__ +# undef lseek +# define lseek lseek64 +# undef off_t +# define off_t off64_t +#endif /* __ANDROID__ */ + +#endif /* DVDCSS_COMMON_H */ diff --git a/src/css.c b/src/css.c new file mode 100644 index 0000000..55cb8df --- /dev/null +++ b/src/css.c @@ -0,0 +1,1756 @@ +/***************************************************************************** + * css.c: Functions for DVD authentication and descrambling + ***************************************************************************** + * Copyright (C) 1999-2008 VideoLAN + * + * Authors: Stéphane Borel + * Håkan Hjort + * + * based on: + * - css-auth by Derek Fawcus + * - DVD CSS ioctls example program by Andrew T. Veliath + * - The Divide and conquer attack by Frank A. Stevenson + * (see http://www-2.cs.cmu.edu/~dst/DeCSS/FrankStevenson/index.html) + * - DeCSSPlus by Ethan Hawke + * - DecVOB + * see http://www.lemuria.org/DeCSS/ by Tom Vogt for more information. + * + * libdvdcss 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. + * + * libdvdcss 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 libdvdcss; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + *****************************************************************************/ + +/***************************************************************************** + * Preamble + *****************************************************************************/ +#include "config.h" + +#include +#include +#include +#include +#include +#ifdef HAVE_SYS_PARAM_H +# include +#endif +#ifdef HAVE_UNISTD_H +# include +#endif +#include + +#include "dvdcss/dvdcss.h" + +#include "common.h" +#include "css.h" +#include "libdvdcss.h" +#include "csstables.h" +#include "ioctl.h" +#include "device.h" + +#define PSZ_KEY_SIZE (DVD_KEY_SIZE * 3) + +/***************************************************************************** + * Local prototypes + *****************************************************************************/ +static void PrintKey ( dvdcss_t, const char *, const uint8_t * ); + +static int GetBusKey ( dvdcss_t ); +static int GetASF ( dvdcss_t ); + +static void CryptKey ( int, int, const uint8_t *, uint8_t * ); +static void DecryptKey ( uint8_t, + const uint8_t *, const uint8_t *, uint8_t * ); + +static int DecryptDiscKey ( dvdcss_t, const uint8_t *, dvd_key ); +static int CrackDiscKey ( uint8_t * ); + +static void DecryptTitleKey ( dvd_key, dvd_key ); +static int RecoverTitleKey ( int, const uint8_t *, + const uint8_t *, const uint8_t *, uint8_t * ); +static int CrackTitleKey ( dvdcss_t, int, int, dvd_key ); + +static int AttackPattern ( const uint8_t[], uint8_t * ); +#if 0 +static int AttackPadding ( const uint8_t[] ); +#endif + +static int dvdcss_titlekey ( dvdcss_t, int, dvd_key ); + +/***************************************************************************** + * dvdcss_test: check if the disc is encrypted or not + ***************************************************************************** + * Return values: + * 1: DVD is scrambled but can be read + * 0: DVD is not scrambled and can be read + * -1: could not get "copyright" information + * -2: could not get RPC (Regional Playback Control) information + * (reading the disc might be possible) + * -3: drive is RPC-II, region is not set, and DVD is scrambled: the RPC + * scheme will prevent us from reading the scrambled data + *****************************************************************************/ +int dvdcss_test( dvdcss_t dvdcss ) +{ + const char *psz_type, *psz_rpc; + char psz_region[17]; + char *p_region = psz_region; + int i_ret, i_copyright, i_type, i_mask, i_rpc, i_region; + + i_ret = ioctl_ReadCopyright( dvdcss->i_fd, 0 /* i_layer */, &i_copyright ); + + if( i_ret < 0 ) + { +#ifdef _WIN32 + /* Maybe we didn't have enough privileges to read the copyright + * (see ioctl_ReadCopyright comments). + * Apparently, on unencrypted DVDs dvdcss_disckey() always fails, so + * we can check this as a workaround. */ + if( dvdcss_disckey( dvdcss ) < 0 ) + { + i_copyright = 0; + } + else + { + i_copyright = 1; + } +#else + /* Since it's the first ioctl we try to issue, we add a notice */ + print_error( dvdcss, "CSS error: could not get \"copyright\"" + " information, make sure there is a DVD in the drive," + " and that you have used the correct device node." ); + + return -1; +#endif /* _WIN32 */ + } + + print_debug( dvdcss, "disc reports copyright information 0x%x", + i_copyright ); + + i_ret = ioctl_ReportRPC( dvdcss->i_fd, &i_type, &i_mask, &i_rpc); + + if( i_ret < 0 ) + { + print_error( dvdcss, "CSS error: could not get RPC (Regional Playback " + "Control) status. Assuming RPC-I drive." ); + i_type = i_mask = i_rpc = 0; + } + + switch( i_rpc ) + { + case 0: psz_rpc = "RPC-I"; break; + case 1: psz_rpc = "RPC-II"; break; + default: psz_rpc = "unknown RPC (Regional Playback Control) scheme"; break; + } + + switch( i_type ) + { + case 0: psz_type = "no region code set"; break; + case 1: psz_type = "region code set"; break; + case 2: psz_type = "one region change remaining"; break; + case 3: psz_type = "region code set permanently"; break; + default: psz_type = "unknown status"; break; + } + + *p_region = '\0'; + for( i_region = 0; i_region < 8; i_region++ ) + { + if( !( i_mask & ( 1 << i_region ) ) ) + { + sprintf(p_region, " %d", i_region + 1); + p_region += 2; + } + } + + print_debug( dvdcss, "drive region(s)%s, region mask 0x%x, %s, %s", + psz_region, i_mask, psz_rpc, psz_type ); + + if( i_copyright && i_rpc == 1 && i_type == 0 ) + { + print_error( dvdcss, "CSS error: drive will prevent access to " + "scrambled data" ); + return -3; + } + + return i_copyright ? 1 : 0; +} + +/***************************************************************************** + * dvdcss_title: crack or decrypt the current title key if needed + ***************************************************************************** + * This function should only be called by dvdcss->pf_seek and should eventually + * not be external if possible. + *****************************************************************************/ +int dvdcss_title ( dvdcss_t dvdcss, int i_block ) +{ + struct dvd_title *p_title; + struct dvd_title *p_newtitle; + dvd_key p_title_key; + int i_fd, i_ret = -1, b_cache = 0; + + if( ! dvdcss->b_scrambled ) + { + return 0; + } + + /* Check if we've already cracked this key */ + p_title = dvdcss->p_titles; + while( p_title != NULL + && p_title->p_next != NULL + && p_title->p_next->i_startlb <= i_block ) + { + p_title = p_title->p_next; + } + + if( p_title != NULL + && p_title->i_startlb == i_block ) + { + /* We've already cracked this key, nothing to do */ + memcpy( dvdcss->css.p_title_key, p_title->p_key, sizeof(p_title->p_key) ); + return 0; + } + + /* Check whether the key is in our disk cache */ + if( dvdcss->psz_cachefile[0] ) + { + /* XXX: be careful, we use sprintf and not snprintf */ + sprintf( dvdcss->psz_block, "%." CACHE_FILENAME_LENGTH_STRING "x", + i_block ); + i_fd = open( dvdcss->psz_cachefile, O_RDONLY ); + b_cache = 1; + + if( i_fd >= 0 ) + { + char psz_key[PSZ_KEY_SIZE]; + unsigned int k0, k1, k2, k3, k4; + + psz_key[PSZ_KEY_SIZE - 1] = '\0'; + + if( read( i_fd, psz_key, PSZ_KEY_SIZE - 1 ) == PSZ_KEY_SIZE - 1 + && sscanf( psz_key, "%x:%x:%x:%x:%x", + &k0, &k1, &k2, &k3, &k4 ) == 5 ) + { + p_title_key[0] = k0; + p_title_key[1] = k1; + p_title_key[2] = k2; + p_title_key[3] = k3; + p_title_key[4] = k4; + PrintKey( dvdcss, "title key found in cache ", p_title_key ); + + /* Don't try to save it again */ + b_cache = 0; + i_ret = 1; + } + + close( i_fd ); + } + } + + /* Crack or decrypt Content Scrambling System (CSS) title key + * for current Video Title Set (VTS). */ + if( i_ret < 0 ) + { + i_ret = dvdcss_titlekey( dvdcss, i_block, p_title_key ); + + if( i_ret < 0 ) + { + print_error( dvdcss, "fatal error in Video Title Set (VTS) " + "Content Scrambling System (CSS) key" ); + return i_ret; + } + + if( i_ret == 0 ) + { + print_debug( dvdcss, "unencrypted title" ); + /* We cache this anyway, so we don't need to check again. */ + } + } + + /* Key is valid, we store it on disk. */ + if( dvdcss->psz_cachefile[0] && b_cache ) + { + i_fd = open( dvdcss->psz_cachefile, O_RDWR|O_CREAT, 0644 ); + if( i_fd >= 0 ) + { + char psz_key[PSZ_KEY_SIZE + 2]; + + sprintf( psz_key, "%02x:%02x:%02x:%02x:%02x\r\n", + p_title_key[0], p_title_key[1], p_title_key[2], + p_title_key[3], p_title_key[4] ); + + if( write( i_fd, psz_key, PSZ_KEY_SIZE + 1 ) < PSZ_KEY_SIZE + 1 ) + { + print_error( dvdcss, + "Error caching key on disk, continuing..\n" ); + } + close( i_fd ); + } + } + + /* Find our spot in the list */ + p_newtitle = NULL; + p_title = dvdcss->p_titles; + while( ( p_title != NULL ) && ( p_title->i_startlb < i_block ) ) + { + p_newtitle = p_title; + p_title = p_title->p_next; + } + + /* Save the found title */ + p_title = p_newtitle; + + /* Write in the new title and its key */ + p_newtitle = malloc( sizeof( *p_newtitle ) ); + if( p_newtitle == NULL ) + { + return -1; + } + p_newtitle->i_startlb = i_block; + memcpy( p_newtitle->p_key, p_title_key, DVD_KEY_SIZE ); + + /* Link it at the head of the (possibly empty) list */ + if( p_title == NULL ) + { + p_newtitle->p_next = dvdcss->p_titles; + dvdcss->p_titles = p_newtitle; + } + /* Link the new title inside the list */ + else + { + p_newtitle->p_next = p_title->p_next; + p_title->p_next = p_newtitle; + } + + memcpy( dvdcss->css.p_title_key, p_title_key, DVD_KEY_SIZE ); + return 0; +} + +/***************************************************************************** + * dvdcss_disckey: get disc key. + ***************************************************************************** + * This function should only be called if DVD ioctls are present. + * It will set dvdcss->i_method = DVDCSS_METHOD_TITLE if it fails to find + * a valid disc key. + * Two decryption methods are offered: + * -disc key hash crack, + * -decryption with player keys if they are available. + *****************************************************************************/ +int dvdcss_disckey( dvdcss_t dvdcss ) +{ + unsigned char p_buffer[ DVD_DISCKEY_SIZE ]; + dvd_key p_disc_key; + int i; + + if( GetBusKey( dvdcss ) < 0 ) + { + return -1; + } + + /* Get encrypted disc key */ + if( ioctl_ReadDiscKey( dvdcss->i_fd, &dvdcss->css.i_agid, p_buffer ) < 0 ) + { + print_error( dvdcss, "ioctl ReadDiscKey failed" ); + return -1; + } + + /* This should have invalidated the AGID and got us ASF=1. */ + if( GetASF( dvdcss ) != 1 ) + { + /* Region mismatch (or region not set) is the most likely source. */ + print_error( dvdcss, "authentication success flag (ASF) not 1 after " + "reading disc key (region mismatch?)" ); + ioctl_InvalidateAgid( dvdcss->i_fd, &dvdcss->css.i_agid ); + return -1; + } + + /* Shuffle disc key using bus key */ + for( i = 0 ; i < DVD_DISCKEY_SIZE ; i++ ) + { + p_buffer[i] ^= dvdcss->css.p_bus_key[4 - (i % DVD_KEY_SIZE)]; + } + + /* Decrypt disc key */ + switch( dvdcss->i_method ) + { + case DVDCSS_METHOD_KEY: + + /* Decrypt disc key with player key. */ + PrintKey( dvdcss, "decrypting disc key ", p_buffer ); + if( ! DecryptDiscKey( dvdcss, p_buffer, p_disc_key ) ) + { + PrintKey( dvdcss, "decrypted disc key is ", p_disc_key ); + break; + } + print_debug( dvdcss, "failed to decrypt the disc key, " + "faulty drive/kernel? " + "cracking title keys instead" ); + + /* Fallback, but not to DISC as the disc key might be faulty */ + memset( p_disc_key, 0, DVD_KEY_SIZE ); + dvdcss->i_method = DVDCSS_METHOD_TITLE; + break; + + case DVDCSS_METHOD_DISC: + + /* Crack Disc key to be able to use it */ + memcpy( p_disc_key, p_buffer, DVD_KEY_SIZE ); + PrintKey( dvdcss, "cracking disc key ", p_disc_key ); + if( ! CrackDiscKey( p_disc_key ) ) + { + PrintKey( dvdcss, "cracked disc key is ", p_disc_key ); + break; + } + print_debug( dvdcss, "failed to crack the disc key" ); + memset( p_disc_key, 0, DVD_KEY_SIZE ); + dvdcss->i_method = DVDCSS_METHOD_TITLE; + break; + + default: + + print_debug( dvdcss, "disc key does not need to be decrypted" ); + memset( p_disc_key, 0, DVD_KEY_SIZE ); + break; + } + + memcpy( dvdcss->css.p_disc_key, p_disc_key, DVD_KEY_SIZE ); + + return 0; +} + + +/***************************************************************************** + * dvdcss_titlekey: get title key. + *****************************************************************************/ +static int dvdcss_titlekey( dvdcss_t dvdcss, int i_pos, dvd_key p_title_key ) +{ + static uint8_t p_garbage[ DVDCSS_BLOCK_SIZE ]; /* we never read it back */ + uint8_t p_key[DVD_KEY_SIZE]; + int i, i_ret = 0; + + if( dvdcss->b_ioctls && ( dvdcss->i_method == DVDCSS_METHOD_KEY || + dvdcss->i_method == DVDCSS_METHOD_DISC ) ) + { + /* We have a decrypted Disc key and the ioctls are available, + * read the title key and decrypt it. + */ + + print_debug( dvdcss, "getting title key at block %i the classic way", + i_pos ); + + /* We need to authenticate again every time to get a new session key */ + if( GetBusKey( dvdcss ) < 0 ) + { + i_ret = -1; + } + + /* Get encrypted title key */ + if( ioctl_ReadTitleKey( dvdcss->i_fd, &dvdcss->css.i_agid, + i_pos, p_key ) < 0 ) + { + print_debug( dvdcss, + "ioctl ReadTitleKey failed (region mismatch?)" ); + i_ret = -1; + } + + /* Test ASF, it will be reset to 0 if we got a Region error */ + switch( GetASF( dvdcss ) ) + { + case -1: + /* An error getting the ASF status, something must be wrong. */ + print_debug( dvdcss, "lost authentication success flag (ASF), requesting title key" ); + ioctl_InvalidateAgid( dvdcss->i_fd, &dvdcss->css.i_agid ); + i_ret = -1; + break; + + case 0: + /* This might either be a title that has no key, + * or we encountered a region error. */ + print_debug( dvdcss, "lost authentication success flag (ASF), requesting title key" ); + break; + + case 1: + /* Drive status is OK. */ + /* If the title key request failed, but we did not lose ASF, + * we might still have the AGID. Other code assumes that we + * will not after this so invalidate it(?). */ + if( i_ret < 0 ) + { + ioctl_InvalidateAgid( dvdcss->i_fd, &dvdcss->css.i_agid ); + } + break; + } + + if( !( i_ret < 0 ) ) + { + /* Decrypt title key using the bus key */ + for( i = 0 ; i < DVD_KEY_SIZE ; i++ ) + { + p_key[i] ^= dvdcss->css.p_bus_key[4 - (i % DVD_KEY_SIZE)]; + } + + /* If p_key is all zero then there really wasn't any key present + * even though we got to read it without an error. */ + if( !( p_key[0] | p_key[1] | p_key[2] | p_key[3] | p_key[4] ) ) + { + i_ret = 0; + } + else + { + PrintKey( dvdcss, "initial disc key ", dvdcss->css.p_disc_key ); + DecryptTitleKey( dvdcss->css.p_disc_key, p_key ); + PrintKey( dvdcss, "decrypted title key ", p_key ); + i_ret = 1; + } + + /* All went well either there wasn't a key or we have it now. */ + memcpy( p_title_key, p_key, DVD_KEY_SIZE ); + PrintKey( dvdcss, "title key is ", p_title_key ); + + return i_ret; + } + + /* The title key request failed */ + print_debug( dvdcss, "resetting drive and cracking title key" ); + + /* Read an unscrambled sector and reset the drive */ + dvdcss->pf_seek( dvdcss, 0 ); + dvdcss->pf_read( dvdcss, p_garbage, 1 ); + dvdcss->pf_seek( dvdcss, 0 ); + dvdcss_disckey( dvdcss ); + + /* Fallback */ + } + + /* METHOD is TITLE, we can't use the ioctls or requesting the title key + * failed above. For these cases we try to crack the key instead. */ + + /* For now, the read limit is 9GB / 2048 = 4718592 sectors. */ + i_ret = CrackTitleKey( dvdcss, i_pos, 4718592, p_key ); + + memcpy( p_title_key, p_key, DVD_KEY_SIZE ); + PrintKey( dvdcss, "title key is ", p_title_key ); + + return i_ret; +} + +/***************************************************************************** + * dvdcss_unscramble: does the actual descrambling of data + ***************************************************************************** + * sec: sector to unscramble + * key: title key for this sector + *****************************************************************************/ +int dvdcss_unscramble( dvd_key p_key, uint8_t *p_sec ) +{ + unsigned int i_t1, i_t2, i_t3, i_t4, i_t5, i_t6; + uint8_t *p_end = p_sec + DVDCSS_BLOCK_SIZE; + + /* PES_scrambling_control */ + if( !(p_sec[0x14] & 0x30) ) + { + return 0; + } + + i_t1 = (p_key[0] ^ p_sec[0x54]) | 0x100; + i_t2 = p_key[1] ^ p_sec[0x55]; + i_t3 = (p_key[2] | (p_key[3] << 8) | + (p_key[4] << 16)) ^ (p_sec[0x56] | + (p_sec[0x57] << 8) | (p_sec[0x58] << 16)); + i_t4 = i_t3 & 7; + i_t3 = i_t3 * 2 + 8 - i_t4; + p_sec += 0x80; + i_t5 = 0; + + while( p_sec != p_end ) + { + i_t4 = p_css_tab2[i_t2] ^ p_css_tab3[i_t1]; + i_t2 = i_t1>>1; + i_t1 = ( ( i_t1 & 1 ) << 8 ) ^ i_t4; + i_t4 = p_css_tab5[i_t4]; + i_t6 = ((((((( i_t3 >> 3 ) ^ i_t3 ) >> 1 ) ^ + i_t3 ) >> 8 ) ^ i_t3 ) >> 5 ) & 0xff; + i_t3 = (i_t3 << 8 ) | i_t6; + i_t6 = p_css_tab4[i_t6]; + i_t5 += i_t6 + i_t4; + *p_sec = p_css_tab1[*p_sec] ^ ( i_t5 & 0xff ); + p_sec++; + i_t5 >>= 8; + } + + return 0; +} + +/* Following functions are local */ + +/***************************************************************************** + * GetBusKey: Go through the Content Scrambling System (CSS) authentication process + ***************************************************************************** + * It simulates the mutual authentication between logical unit and host, + * and stops when a session key (called bus key) has been established. + * Always do the full auth sequence. Some drives seem to lie and always + * respond with ASF=1. For instance the old DVD-ROMs on Compaq Armada say + * that ASF=1 from the start and then later fail with a 'read of scrambled + * block without authentication' error. + *****************************************************************************/ +static int GetBusKey( dvdcss_t dvdcss ) +{ + uint8_t p_buffer[10]; + uint8_t p_challenge[2 * DVD_KEY_SIZE]; + dvd_key p_key1; + dvd_key p_key2; + dvd_key p_key_check; + uint8_t i_variant = 0; + int i_ret = -1; + int i; + + print_debug( dvdcss, "requesting authentication grant ID (AGID)" ); + i_ret = ioctl_ReportAgid( dvdcss->i_fd, &dvdcss->css.i_agid ); + + /* We might have to reset hung authentication processes in the drive + * by invalidating the corresponding authentication grant ID (AGID)'. + * As long as we haven't got an AGID, invalidate one (in sequence) + * and try again. */ + for( i = 0; i_ret == -1 && i < 4 ; ++i ) + { + print_debug( dvdcss, "ioctl ReportAgid failed, invalidating " + "authentication grant ID (AGID) %d", i ); + + /* This is really _not good_, should be handled by the OS. + * Invalidating an AGID could make another process fail somewhere + * in its authentication process. */ + dvdcss->css.i_agid = i; + ioctl_InvalidateAgid( dvdcss->i_fd, &dvdcss->css.i_agid ); + + print_debug( dvdcss, "requesting authentication grant ID (AGID)" ); + i_ret = ioctl_ReportAgid( dvdcss->i_fd, &dvdcss->css.i_agid ); + } + + /* Unable to authenticate without AGID */ + if( i_ret == -1 ) + { + print_error( dvdcss, "ioctl ReportAgid failed, fatal" ); + return -1; + } + + /* Setup a challenge, any values should work */ + for( i = 0 ; i < 10; ++i ) + { + p_challenge[i] = i; + } + + /* Get challenge from host */ + for( i = 0 ; i < 10 ; ++i ) + { + p_buffer[9-i] = p_challenge[i]; + } + + /* Send challenge to LU */ + if( ioctl_SendChallenge( dvdcss->i_fd, + &dvdcss->css.i_agid, p_buffer ) < 0 ) + { + print_error( dvdcss, "ioctl SendChallenge failed" ); + ioctl_InvalidateAgid( dvdcss->i_fd, &dvdcss->css.i_agid ); + return -1; + } + + /* Get key1 from LU */ + if( ioctl_ReportKey1( dvdcss->i_fd, &dvdcss->css.i_agid, p_buffer ) < 0) + { + print_error( dvdcss, "ioctl ReportKey1 failed" ); + ioctl_InvalidateAgid( dvdcss->i_fd, &dvdcss->css.i_agid ); + return -1; + } + + /* Send key1 to host */ + for( i = 0 ; i < DVD_KEY_SIZE ; i++ ) + { + p_key1[i] = p_buffer[4-i]; + } + + for( i = 0 ; i < 32 ; ++i ) + { + CryptKey( 0, i, p_challenge, p_key_check ); + + if( memcmp( p_key_check, p_key1, DVD_KEY_SIZE ) == 0 ) + { + print_debug( dvdcss, "drive authenticated, using variant %d", i ); + i_variant = i; + break; + } + } + + if( i == 32 ) + { + print_error( dvdcss, "drive would not authenticate" ); + ioctl_InvalidateAgid( dvdcss->i_fd, &dvdcss->css.i_agid ); + return -1; + } + + /* Get challenge from LU */ + if( ioctl_ReportChallenge( dvdcss->i_fd, + &dvdcss->css.i_agid, p_buffer ) < 0 ) + { + print_error( dvdcss, "ioctl ReportKeyChallenge failed" ); + ioctl_InvalidateAgid( dvdcss->i_fd, &dvdcss->css.i_agid ); + return -1; + } + + /* Send challenge to host */ + for( i = 0 ; i < 10 ; ++i ) + { + p_challenge[i] = p_buffer[9-i]; + } + + CryptKey( 1, i_variant, p_challenge, p_key2 ); + + /* Get key2 from host */ + for( i = 0 ; i < DVD_KEY_SIZE ; ++i ) + { + p_buffer[4-i] = p_key2[i]; + } + + /* Send key2 to LU */ + if( ioctl_SendKey2( dvdcss->i_fd, &dvdcss->css.i_agid, p_buffer ) < 0 ) + { + print_error( dvdcss, "ioctl SendKey2 failed" ); + ioctl_InvalidateAgid( dvdcss->i_fd, &dvdcss->css.i_agid ); + return -1; + } + + /* The drive has accepted us as authentic. */ + print_debug( dvdcss, "authentication established" ); + + memcpy( p_challenge, p_key1, DVD_KEY_SIZE ); + memcpy( p_challenge + DVD_KEY_SIZE, p_key2, DVD_KEY_SIZE ); + + CryptKey( 2, i_variant, p_challenge, dvdcss->css.p_bus_key ); + + return 0; +} + +/***************************************************************************** + * PrintKey: debug function that dumps a key value + *****************************************************************************/ +static void PrintKey( dvdcss_t dvdcss, const char *prefix, const uint8_t *data ) +{ + print_debug( dvdcss, "%s%02x:%02x:%02x:%02x:%02x", prefix, + data[0], data[1], data[2], data[3], data[4] ); +} + +/***************************************************************************** + * GetASF: Get authentication success flag (ASF) + ***************************************************************************** + * Returns: + * -1 on ioctl error, + * 0 if the device needs to be authenticated, + * 1 either. + *****************************************************************************/ +static int GetASF( dvdcss_t dvdcss ) +{ + int i_asf = 0; + + if( ioctl_ReportASF( dvdcss->i_fd, &i_asf ) != 0 ) + { + /* The ioctl process has failed */ + print_error( dvdcss, "GetASF fatal error" ); + return -1; + } + + if( i_asf ) + { + print_debug( dvdcss, "authentication success flag set, ASF=1" ); + } + else + { + print_debug( dvdcss, "authentication success flag not set, ASF=0" ); + } + + return i_asf; +} + +/***************************************************************************** + * CryptKey: shuffle bits and decrypt keys. + ***************************************************************************** + * Used during authentication and disc key negotiation in GetBusKey. + * i_key_type: 0->key1, 1->key2, 2->buskey. + * i_variant: between 0 and 31. + *****************************************************************************/ +static void CryptKey( int i_key_type, int i_variant, + const uint8_t *p_challenge, uint8_t *p_key ) +{ + /* Permutation table for challenge */ + static const uint8_t pp_perm_challenge[3][10] = + { { 1, 3, 0, 7, 5, 2, 9, 6, 4, 8 }, + { 6, 1, 9, 3, 8, 5, 7, 4, 0, 2 }, + { 4, 0, 3, 5, 7, 2, 8, 6, 1, 9 } }; + + /* Permutation table for variant table for key2 and buskey */ + static const uint8_t pp_perm_variant[2][32] = + { { 0x0a, 0x08, 0x0e, 0x0c, 0x0b, 0x09, 0x0f, 0x0d, + 0x1a, 0x18, 0x1e, 0x1c, 0x1b, 0x19, 0x1f, 0x1d, + 0x02, 0x00, 0x06, 0x04, 0x03, 0x01, 0x07, 0x05, + 0x12, 0x10, 0x16, 0x14, 0x13, 0x11, 0x17, 0x15 }, + { 0x12, 0x1a, 0x16, 0x1e, 0x02, 0x0a, 0x06, 0x0e, + 0x10, 0x18, 0x14, 0x1c, 0x00, 0x08, 0x04, 0x0c, + 0x13, 0x1b, 0x17, 0x1f, 0x03, 0x0b, 0x07, 0x0f, + 0x11, 0x19, 0x15, 0x1d, 0x01, 0x09, 0x05, 0x0d } }; + + static const uint8_t p_variants[32] = + { 0xB7, 0x74, 0x85, 0xD0, 0xCC, 0xDB, 0xCA, 0x73, + 0x03, 0xFE, 0x31, 0x03, 0x52, 0xE0, 0xB7, 0x42, + 0x63, 0x16, 0xF2, 0x2A, 0x79, 0x52, 0xFF, 0x1B, + 0x7A, 0x11, 0xCA, 0x1A, 0x9B, 0x40, 0xAD, 0x01 }; + + /* The "secret" key */ + static const uint8_t p_secret[5] = { 0x55, 0xD6, 0xC4, 0xC5, 0x28 }; + + uint8_t p_bits[30], p_scratch[10], p_tmp1[5], p_tmp2[5]; + uint8_t i_lfsr0_o; /* 1 bit used */ + uint8_t i_lfsr1_o; /* 1 bit used */ + uint8_t i_css_variant, i_cse, i_index, i_combined, i_carry; + uint8_t i_val = 0; + uint32_t i_lfsr0, i_lfsr1; + int i_term = 0; + int i_bit; + int i; + + for (i = 9; i >= 0; --i) + p_scratch[i] = p_challenge[pp_perm_challenge[i_key_type][i]]; + + i_css_variant = ( i_key_type == 0 ) ? i_variant : + pp_perm_variant[i_key_type-1][i_variant]; + + /* + * This encryption engine implements one of 32 variations + * one the same theme depending upon the choice in the + * variant parameter (0 - 31). + * + * The algorithm itself manipulates a 40 bit input into + * a 40 bit output. + * The parameter 'input' is 80 bits. It consists of + * the 40 bit input value that is to be encrypted followed + * by a 40 bit seed value for the pseudo random number + * generators. + */ + + /* Feed the secret into the input values such that + * we alter the seed to the LFSR's used above, then + * generate the bits to play with. + */ + for( i = 5 ; --i >= 0 ; ) + { + p_tmp1[i] = p_scratch[5 + i] ^ p_secret[i] ^ p_crypt_tab2[i]; + } + + /* + * We use two LFSR's (seeded from some of the input data bytes) to + * generate two streams of pseudo-random bits. These two bit streams + * are then combined by simply adding with carry to generate a final + * sequence of pseudo-random bits which is stored in the buffer that + * 'output' points to the end of - len is the size of this buffer. + * + * The first LFSR is of degree 25, and has a polynomial of: + * x^13 + x^5 + x^4 + x^1 + 1 + * + * The second LFSR is of degree 17, and has a (primitive) polynomial of: + * x^15 + x^1 + 1 + * + * I don't know if these polynomials are primitive modulo 2, and thus + * represent maximal-period LFSR's. + * + * + * Note that we take the output of each LFSR from the new shifted in + * bit, not the old shifted out bit. Thus for ease of use the LFSR's + * are implemented in bit reversed order. + * + */ + + /* In order to ensure that the LFSR works we need to ensure that the + * initial values are non-zero. Thus when we initialize them from + * the seed, we ensure that a bit is set. + */ + i_lfsr0 = ( p_tmp1[0] << 17 ) | ( p_tmp1[1] << 9 ) | + (( p_tmp1[2] & ~7 ) << 1 ) | 8 | ( p_tmp1[2] & 7 ); + i_lfsr1 = ( p_tmp1[3] << 9 ) | 0x100 | p_tmp1[4]; + + i_index = sizeof(p_bits); + i_carry = 0; + + do + { + for( i_bit = 0, i_val = 0 ; i_bit < 8 ; ++i_bit ) + { + + i_lfsr0_o = ( ( i_lfsr0 >> 24 ) ^ ( i_lfsr0 >> 21 ) ^ + ( i_lfsr0 >> 20 ) ^ ( i_lfsr0 >> 12 ) ) & 1; + i_lfsr0 = ( i_lfsr0 << 1 ) | i_lfsr0_o; + + i_lfsr1_o = ( ( i_lfsr1 >> 16 ) ^ ( i_lfsr1 >> 2 ) ) & 1; + i_lfsr1 = ( i_lfsr1 << 1 ) | i_lfsr1_o; + + i_combined = !i_lfsr1_o + i_carry + !i_lfsr0_o; + /* taking bit 1 */ + i_carry = ( i_combined >> 1 ) & 1; + i_val |= ( i_combined & 1 ) << i_bit; + } + + p_bits[--i_index] = i_val; + } while( i_index > 0 ); + + /* This term is used throughout the following to + * select one of 32 different variations on the + * algorithm. + */ + i_cse = p_variants[i_css_variant] ^ p_crypt_tab2[i_css_variant]; + + /* Now the actual blocks doing the encryption. Each + * of these works on 40 bits at a time and are quite + * similar. + */ + i_index = 0; + for( i = 5, i_term = 0 ; --i >= 0 ; i_term = p_scratch[i] ) + { + i_index = p_bits[25 + i] ^ p_scratch[i]; + i_index = p_crypt_tab1[i_index] ^ ~p_crypt_tab2[i_index] ^ i_cse; + + p_tmp1[i] = p_crypt_tab2[i_index] ^ p_crypt_tab3[i_index] ^ i_term; + } + p_tmp1[4] ^= p_tmp1[0]; + + for( i = 5, i_term = 0 ; --i >= 0 ; i_term = p_tmp1[i] ) + { + i_index = p_bits[20 + i] ^ p_tmp1[i]; + i_index = p_crypt_tab1[i_index] ^ ~p_crypt_tab2[i_index] ^ i_cse; + + p_tmp2[i] = p_crypt_tab2[i_index] ^ p_crypt_tab3[i_index] ^ i_term; + } + p_tmp2[4] ^= p_tmp2[0]; + + for( i = 5, i_term = 0 ; --i >= 0 ; i_term = p_tmp2[i] ) + { + i_index = p_bits[15 + i] ^ p_tmp2[i]; + i_index = p_crypt_tab1[i_index] ^ ~p_crypt_tab2[i_index] ^ i_cse; + i_index = p_crypt_tab2[i_index] ^ p_crypt_tab3[i_index] ^ i_term; + + p_tmp1[i] = p_crypt_tab0[i_index] ^ p_crypt_tab2[i_index]; + } + p_tmp1[4] ^= p_tmp1[0]; + + for( i = 5, i_term = 0 ; --i >= 0 ; i_term = p_tmp1[i] ) + { + i_index = p_bits[10 + i] ^ p_tmp1[i]; + i_index = p_crypt_tab1[i_index] ^ ~p_crypt_tab2[i_index] ^ i_cse; + + i_index = p_crypt_tab2[i_index] ^ p_crypt_tab3[i_index] ^ i_term; + + p_tmp2[i] = p_crypt_tab0[i_index] ^ p_crypt_tab2[i_index]; + } + p_tmp2[4] ^= p_tmp2[0]; + + for( i = 5, i_term = 0 ; --i >= 0 ; i_term = p_tmp2[i] ) + { + i_index = p_bits[5 + i] ^ p_tmp2[i]; + i_index = p_crypt_tab1[i_index] ^ ~p_crypt_tab2[i_index] ^ i_cse; + + p_tmp1[i] = p_crypt_tab2[i_index] ^ p_crypt_tab3[i_index] ^ i_term; + } + p_tmp1[4] ^= p_tmp1[0]; + + for(i = 5, i_term = 0 ; --i >= 0 ; i_term = p_tmp1[i] ) + { + i_index = p_bits[i] ^ p_tmp1[i]; + i_index = p_crypt_tab1[i_index] ^ ~p_crypt_tab2[i_index] ^ i_cse; + + p_key[i] = p_crypt_tab2[i_index] ^ p_crypt_tab3[i_index] ^ i_term; + } + + return; +} + +/***************************************************************************** + * DecryptKey: decrypt p_crypted with p_key. + ***************************************************************************** + * Used to decrypt the disc key, with a player key, after requesting it + * in dvdcss_disckey and to decrypt title keys, with a disc key, requested + * in dvdcss_titlekey. + * The player keys and the resulting disc key are only used as KEKs + * (key encryption keys). + * Decryption is slightly dependent on the type of key: + * -for disc key, invert is 0x00, + * -for title key, invert if 0xff. + *****************************************************************************/ +static void DecryptKey( uint8_t invert, const uint8_t *p_key, + const uint8_t *p_crypted, uint8_t *p_result ) +{ + unsigned int i_lfsr1_lo; + unsigned int i_lfsr1_hi; + unsigned int i_lfsr0; + unsigned int i_combined; + uint8_t o_lfsr0; + uint8_t o_lfsr1; + uint8_t k[5]; + int i; + + i_lfsr1_lo = p_key[0] | 0x100; + i_lfsr1_hi = p_key[1]; + + i_lfsr0 = ( ( p_key[4] << 17 ) + | ( p_key[3] << 9 ) + | ( p_key[2] << 1 ) ) + + 8 - ( p_key[2] & 7 ); + i_lfsr0 = ( p_css_tab4[i_lfsr0 & 0xff] << 24 ) | + ( p_css_tab4[( i_lfsr0 >> 8 ) & 0xff] << 16 ) | + ( p_css_tab4[( i_lfsr0 >> 16 ) & 0xff] << 8 ) | + p_css_tab4[( i_lfsr0 >> 24 ) & 0xff]; + + i_combined = 0; + for( i = 0 ; i < DVD_KEY_SIZE ; ++i ) + { + o_lfsr1 = p_css_tab2[i_lfsr1_hi] ^ p_css_tab3[i_lfsr1_lo]; + i_lfsr1_hi = i_lfsr1_lo >> 1; + i_lfsr1_lo = ( ( i_lfsr1_lo & 1 ) << 8 ) ^ o_lfsr1; + o_lfsr1 = p_css_tab4[o_lfsr1]; + + o_lfsr0 = ((((((( i_lfsr0 >> 8 ) ^ i_lfsr0 ) >> 1 ) + ^ i_lfsr0 ) >> 3 ) ^ i_lfsr0 ) >> 7 ); + i_lfsr0 = ( i_lfsr0 >> 8 ) | ( o_lfsr0 << 24 ); + + i_combined += ( o_lfsr0 ^ invert ) + o_lfsr1; + k[i] = i_combined & 0xff; + i_combined >>= 8; + } + + p_result[4] = k[4] ^ p_css_tab1[p_crypted[4]] ^ p_crypted[3]; + p_result[3] = k[3] ^ p_css_tab1[p_crypted[3]] ^ p_crypted[2]; + p_result[2] = k[2] ^ p_css_tab1[p_crypted[2]] ^ p_crypted[1]; + p_result[1] = k[1] ^ p_css_tab1[p_crypted[1]] ^ p_crypted[0]; + p_result[0] = k[0] ^ p_css_tab1[p_crypted[0]] ^ p_result[4]; + + p_result[4] = k[4] ^ p_css_tab1[p_result[4]] ^ p_result[3]; + p_result[3] = k[3] ^ p_css_tab1[p_result[3]] ^ p_result[2]; + p_result[2] = k[2] ^ p_css_tab1[p_result[2]] ^ p_result[1]; + p_result[1] = k[1] ^ p_css_tab1[p_result[1]] ^ p_result[0]; + p_result[0] = k[0] ^ p_css_tab1[p_result[0]]; + + return; +} + +/***************************************************************************** + * player_keys: alternate DVD player keys + ***************************************************************************** + * These player keys were generated using Frank A. Stevenson's PlayerKey + * cracker. A copy of his article can be found here: + * http://www-2.cs.cmu.edu/~dst/DeCSS/FrankStevenson/mail2.txt + *****************************************************************************/ +static const dvd_key player_keys[] = +{ + { 0x01, 0xaf, 0xe3, 0x12, 0x80 }, + { 0x12, 0x11, 0xca, 0x04, 0x3b }, + { 0x14, 0x0c, 0x9e, 0xd0, 0x09 }, + { 0x14, 0x71, 0x35, 0xba, 0xe2 }, + { 0x1a, 0xa4, 0x33, 0x21, 0xa6 }, + { 0x26, 0xec, 0xc4, 0xa7, 0x4e }, + { 0x2c, 0xb2, 0xc1, 0x09, 0xee }, + { 0x2f, 0x25, 0x9e, 0x96, 0xdd }, + { 0x33, 0x2f, 0x49, 0x6c, 0xe0 }, + { 0x35, 0x5b, 0xc1, 0x31, 0x0f }, + { 0x36, 0x67, 0xb2, 0xe3, 0x85 }, + { 0x39, 0x3d, 0xf1, 0xf1, 0xbd }, + { 0x3b, 0x31, 0x34, 0x0d, 0x91 }, + { 0x45, 0xed, 0x28, 0xeb, 0xd3 }, + { 0x48, 0xb7, 0x6c, 0xce, 0x69 }, + { 0x4b, 0x65, 0x0d, 0xc1, 0xee }, + { 0x4c, 0xbb, 0xf5, 0x5b, 0x23 }, + { 0x51, 0x67, 0x67, 0xc5, 0xe0 }, + { 0x53, 0x94, 0xe1, 0x75, 0xbf }, + { 0x57, 0x2c, 0x8b, 0x31, 0xae }, + { 0x63, 0xdb, 0x4c, 0x5b, 0x4a }, + { 0x7b, 0x1e, 0x5e, 0x2b, 0x57 }, + { 0x85, 0xf3, 0x85, 0xa0, 0xe0 }, + { 0xab, 0x1e, 0xe7, 0x7b, 0x72 }, + { 0xab, 0x36, 0xe3, 0xeb, 0x76 }, + { 0xb1, 0xb8, 0xf9, 0x38, 0x03 }, + { 0xb8, 0x5d, 0xd8, 0x53, 0xbd }, + { 0xbf, 0x92, 0xc3, 0xb0, 0xe2 }, + { 0xcf, 0x1a, 0xb2, 0xf8, 0x0a }, + { 0xec, 0xa0, 0xcf, 0xb3, 0xff }, + { 0xfc, 0x95, 0xa9, 0x87, 0x35 } +}; + +/***************************************************************************** + * DecryptDiscKey + ***************************************************************************** + * Decryption of the disc key with player keys: try to decrypt the disc key + * from every position with every player key. + * p_struct_disckey: the 2048 byte DVD_STRUCT_DISCKEY data + * p_disc_key: result, the 5 byte disc key + *****************************************************************************/ +static int DecryptDiscKey( dvdcss_t dvdcss, const uint8_t *p_struct_disckey, + dvd_key p_disc_key ) +{ + uint8_t p_verify[DVD_KEY_SIZE]; + unsigned int i, n = 0; + + /* Decrypt disc key with the above player keys */ + for( n = 0; n < sizeof(player_keys) / sizeof(*player_keys); n++ ) + { + PrintKey( dvdcss, "trying player key ", player_keys[n] ); + + for( i = 1; i < 409; i++ ) + { + /* Check if player key n is the right key for position i. */ + DecryptKey( 0, player_keys[n], p_struct_disckey + 5 * i, + p_disc_key ); + + /* The first part in the struct_disckey block is the + * 'disc key' encrypted with itself. Using this we + * can check if we decrypted the correct key. */ + DecryptKey( 0, p_disc_key, p_struct_disckey, p_verify ); + + /* If the position / player key pair worked then return. */ + if( memcmp( p_disc_key, p_verify, DVD_KEY_SIZE ) == 0 ) + { + return 0; + } + } + } + + /* Have tried all combinations of positions and keys, + * and we still didn't succeed. */ + memset( p_disc_key, 0, DVD_KEY_SIZE ); + return -1; +} + +/***************************************************************************** + * DecryptTitleKey + ***************************************************************************** + * Decrypt the title key using the disc key. + * p_disc_key: result, the 5 byte disc key + * p_titlekey: the encrypted title key, gets overwritten by the decrypted key + *****************************************************************************/ +static void DecryptTitleKey( dvd_key p_disc_key, dvd_key p_titlekey ) +{ + DecryptKey( 0xff, p_disc_key, p_titlekey, p_titlekey ); +} + +/***************************************************************************** + * CrackDiscKey: brute force disc key + * CSS hash reversal function designed by Frank Stevenson + ***************************************************************************** + * This function uses a big amount of memory to crack the disc key from the + * disc key hash, if player keys are not available. + *****************************************************************************/ +#define K1TABLESIZE 65536 +#define K1TABLEWIDTH 10 + +#define BIGTABLESIZE 16777216 + +/* + * Simple function to test if a candidate key produces the given hash + */ +static int investigate( unsigned char *hash, unsigned char *ckey ) +{ + unsigned char key[DVD_KEY_SIZE]; + + DecryptKey( 0, ckey, hash, key ); + + return memcmp( key, ckey, DVD_KEY_SIZE ); +} + +static int CrackDiscKey( uint8_t *p_disc_key ) +{ + unsigned char B[5] = { 0,0,0,0,0 }; /* Second Stage of mangle cipher */ + unsigned char C[5] = { 0,0,0,0,0 }; /* Output Stage of mangle cipher + * IntermediateKey */ + unsigned char k[5] = { 0,0,0,0,0 }; /* Mangling cipher key + * Also output from CSS( C ) */ + unsigned char out1[5]; /* five first output bytes of LFSR1 */ + unsigned char out2[5]; /* five first output bytes of LFSR2 */ + unsigned int lfsr1a; /* upper 9 bits of LFSR1 */ + unsigned int lfsr1b; /* lower 8 bits of LFSR1 */ + unsigned int tmp, tmp2, tmp3, tmp4,tmp5; + int i, j, ret = 0; + unsigned int nStepA; /* iterator for LFSR1 start state */ + unsigned int nStepB; /* iterator for possible B[0] */ + unsigned int nTry; /* iterator for K[1] possibilities */ + unsigned int nPossibleK1; /* #of possible K[1] values */ + unsigned char* K1table; /* Lookup table for possible K[1] */ + unsigned int* BigTable; /* LFSR2 startstate indexed by + * 1,2,5 output byte */ + + /* + * Prepare tables for hash reversal + */ + + /* initialize lookup tables for k[1] */ + K1table = calloc( K1TABLESIZE, K1TABLEWIDTH ); + if( K1table == NULL ) + { + return -1; + } + + tmp = p_disc_key[0] ^ p_css_tab1[ p_disc_key[1] ]; + for( i = 0 ; i < 256 ; i++ ) /* k[1] */ + { + tmp2 = p_css_tab1[ tmp ^ i ]; /* p_css_tab1[ B[1] ]*/ + + for( j = 0 ; j < 256 ; j++ ) /* B[0] */ + { + tmp3 = j ^ tmp2 ^ i; /* C[1] */ + tmp4 = K1table[ K1TABLEWIDTH * ( 256 * j + tmp3 ) ]; /* count of entries here */ + tmp4++; + if( tmp4 < K1TABLEWIDTH ) + { + K1table[ K1TABLEWIDTH * ( 256 * j + tmp3 ) + tmp4 ] = i; + } + K1table[ K1TABLEWIDTH * ( 256 * j + tmp3 ) ] = tmp4; + } + } + + /* Initializing our really big table */ + BigTable = calloc( BIGTABLESIZE, sizeof(*BigTable) ); + if( BigTable == NULL ) + { + free( K1table ); + return -1; + } + + tmp3 = 0; + + for( i = 0 ; i < BIGTABLESIZE ; i++ ) + { + tmp = (( i + i ) & 0x1fffff0 ) | 0x8 | ( i & 0x7 ); + + for( j = 0 ; j < 5 ; j++ ) + { + tmp2=((((((( tmp >> 3 ) ^ tmp ) >> 1 ) ^ tmp ) >> 8 ) + ^ tmp ) >> 5 ) & 0xff; + tmp = ( tmp << 8) | tmp2; + out2[j] = p_css_tab4[ tmp2 ]; + } + + j = ( out2[0] << 16 ) | ( out2[1] << 8 ) | out2[4]; + if ( j >= BIGTABLESIZE ) + { + ret = -1; + goto error; + } + BigTable[j] = i; + } + + /* + * We are done initializing, now reverse hash + */ + tmp5 = p_disc_key[0] ^ p_css_tab1[ p_disc_key[1] ]; + + for( nStepA = 0 ; nStepA < K1TABLESIZE ; nStepA ++ ) + { + lfsr1a = 0x100 | ( nStepA >> 8 ); + lfsr1b = nStepA & 0xff; + + /* Generate 5 first output bytes from lfsr1 */ + for( i = 0 ; i < 5 ; i++ ) + { + tmp = p_css_tab2[ lfsr1b ] ^ p_css_tab3[ lfsr1a ]; + lfsr1b = lfsr1a >> 1; + lfsr1a = ((lfsr1a&1)<<8) ^ tmp; + out1[ i ] = p_css_tab4[ tmp ]; + } + + /* compute and cache some variables */ + C[0] = nStepA >> 8; + C[1] = nStepA & 0xff; + tmp = p_disc_key[3] ^ p_css_tab1[ p_disc_key[4] ]; + tmp2 = p_css_tab1[ p_disc_key[0] ]; + + /* Search through all possible B[0] */ + for( nStepB = 0 ; nStepB < 256 ; nStepB++ ) + { + /* reverse parts of the mangling cipher */ + B[0] = nStepB; + k[0] = p_css_tab1[ B[0] ] ^ C[0]; + B[4] = B[0] ^ k[0] ^ tmp2; + k[4] = B[4] ^ tmp; + nPossibleK1 = K1table[ K1TABLEWIDTH * (256 * B[0] + C[1]) ]; + + /* Try out all possible values for k[1] */ + for( nTry = 0 ; nTry < nPossibleK1 ; nTry++ ) + { + k[1] = K1table[ K1TABLEWIDTH * (256 * B[0] + C[1]) + nTry + 1 ]; + B[1] = tmp5 ^ k[1]; + + /* reconstruct output from LFSR2 */ + tmp3 = ( 0x100 + k[0] - out1[0] ); + out2[0] = tmp3 & 0xff; + tmp3 = tmp3 & 0x100 ? 0x100 : 0xff; + tmp3 = ( tmp3 + k[1] - out1[1] ); + out2[1] = tmp3 & 0xff; + tmp3 = ( 0x100 + k[4] - out1[4] ); + out2[4] = tmp3 & 0xff; /* Can be 1 off */ + + /* test first possible out2[4] */ + tmp4 = ( out2[0] << 16 ) | ( out2[1] << 8 ) | out2[4]; + if ( tmp4 >= BIGTABLESIZE ) + { + ret = -1; + goto error; + } + tmp4 = BigTable[ tmp4 ]; + C[2] = tmp4 & 0xff; + C[3] = ( tmp4 >> 8 ) & 0xff; + C[4] = ( tmp4 >> 16 ) & 0xff; + B[3] = p_css_tab1[ B[4] ] ^ k[4] ^ C[4]; + k[3] = p_disc_key[2] ^ p_css_tab1[ p_disc_key[3] ] ^ B[3]; + B[2] = p_css_tab1[ B[3] ] ^ k[3] ^ C[3]; + k[2] = p_disc_key[1] ^ p_css_tab1[ p_disc_key[2] ] ^ B[2]; + + if( ( B[1] ^ p_css_tab1[ B[2] ] ^ k[ 2 ] ) == C[ 2 ] ) + { + if( ! investigate( &p_disc_key[0] , &C[0] ) ) + { + goto end; + } + } + + /* Test second possible out2[4] */ + out2[4] = ( out2[4] + 0xff ) & 0xff; + tmp4 = ( out2[0] << 16 ) | ( out2[1] << 8 ) | out2[4]; + if ( tmp4 >= BIGTABLESIZE ) + { + ret = -1; + goto error; + } + tmp4 = BigTable[ tmp4 ]; + C[2] = tmp4 & 0xff; + C[3] = ( tmp4 >> 8 ) & 0xff; + C[4] = ( tmp4 >> 16 ) & 0xff; + B[3] = p_css_tab1[ B[4] ] ^ k[4] ^ C[4]; + k[3] = p_disc_key[2] ^ p_css_tab1[ p_disc_key[3] ] ^ B[3]; + B[2] = p_css_tab1[ B[3] ] ^ k[3] ^ C[3]; + k[2] = p_disc_key[1] ^ p_css_tab1[ p_disc_key[2] ] ^ B[2]; + + if( ( B[1] ^ p_css_tab1[ B[2] ] ^ k[ 2 ] ) == C[ 2 ] ) + { + if( ! investigate( &p_disc_key[0] , &C[0] ) ) + { + goto end; + } + } + } + } + } + +end: + memcpy( p_disc_key, &C[0], DVD_KEY_SIZE ); + +error: + free( K1table ); + free( BigTable ); + + return ret; +} + +/***************************************************************************** + * RecoverTitleKey: (title) key recovery from cipher and plain text + * Function designed by Frank Stevenson + ***************************************************************************** + * Called from Attack* which are in turn called by CrackTitleKey. Given + * a guessed(?) plain text and the cipher text. Returns -1 on failure. + *****************************************************************************/ +static int RecoverTitleKey( int i_start, const uint8_t *p_crypted, + const uint8_t *p_decrypted, + const uint8_t *p_sector_seed, uint8_t *p_key ) +{ + uint8_t p_buffer[10]; + unsigned int i_t1, i_t2, i_t3, i_t4, i_t5, i_t6; + unsigned int i_try; + unsigned int i_candidate; + unsigned int i, j; + int i_exit = -1; + + for( i = 0 ; i < 10 ; i++ ) + { + p_buffer[i] = p_css_tab1[p_crypted[i]] ^ p_decrypted[i]; + } + + for( i_try = i_start ; i_try < 0x10000 ; i_try++ ) + { + i_t1 = i_try >> 8 | 0x100; + i_t2 = i_try & 0xff; + i_t3 = 0; /* not needed */ + i_t5 = 0; + + /* iterate cipher 4 times to reconstruct LFSR2 */ + for( i = 0 ; i < 4 ; i++ ) + { + /* advance LFSR1 normally */ + i_t4 = p_css_tab2[i_t2] ^ p_css_tab3[i_t1]; + i_t2 = i_t1 >> 1; + i_t1 = ( ( i_t1 & 1 ) << 8 ) ^ i_t4; + i_t4 = p_css_tab5[i_t4]; + /* deduce i_t6 & i_t5 */ + i_t6 = p_buffer[i]; + if( i_t5 ) + { + i_t6 = ( i_t6 + 0xff ) & 0x0ff; + } + if( i_t6 < i_t4 ) + { + i_t6 += 0x100; + } + i_t6 -= i_t4; + i_t5 += i_t6 + i_t4; + i_t6 = p_css_tab4[ i_t6 ]; + /* feed / advance i_t3 / i_t5 */ + i_t3 = ( i_t3 << 8 ) | i_t6; + i_t5 >>= 8; + } + + i_candidate = i_t3; + + /* iterate 6 more times to validate candidate key */ + for( ; i < 10 ; i++ ) + { + i_t4 = p_css_tab2[i_t2] ^ p_css_tab3[i_t1]; + i_t2 = i_t1 >> 1; + i_t1 = ( ( i_t1 & 1 ) << 8 ) ^ i_t4; + i_t4 = p_css_tab5[i_t4]; + i_t6 = ((((((( i_t3 >> 3 ) ^ i_t3 ) >> 1 ) ^ + i_t3 ) >> 8 ) ^ i_t3 ) >> 5 ) & 0xff; + i_t3 = ( i_t3 << 8 ) | i_t6; + i_t6 = p_css_tab4[i_t6]; + i_t5 += i_t6 + i_t4; + if( ( i_t5 & 0xff ) != p_buffer[i] ) + { + break; + } + + i_t5 >>= 8; + } + + if( i == 10 ) + { + /* Do 4 backwards steps of iterating t3 to deduce initial state */ + i_t3 = i_candidate; + for( i = 0 ; i < 4 ; i++ ) + { + i_t1 = i_t3 & 0xff; + i_t3 = ( i_t3 >> 8 ); + /* easy to code, and fast enough brute-force + * search for byte shifted in */ + for( j = 0 ; j < 256 ; j++ ) + { + i_t3 = ( i_t3 & 0x1ffff ) | ( j << 17 ); + i_t6 = ((((((( i_t3 >> 3 ) ^ i_t3 ) >> 1 ) ^ + i_t3 ) >> 8 ) ^ i_t3 ) >> 5 ) & 0xff; + if( i_t6 == i_t1 ) + { + break; + } + } + } + + i_t4 = ( i_t3 >> 1 ) - 4; + for( i_t5 = 0 ; i_t5 < 8; i_t5++ ) + { + if( ( ( i_t4 + i_t5 ) * 2 + 8 - ( (i_t4 + i_t5 ) & 7 ) ) + == i_t3 ) + { + p_key[0] = i_try>>8; + p_key[1] = i_try & 0xFF; + p_key[2] = ( ( i_t4 + i_t5 ) >> 0 ) & 0xFF; + p_key[3] = ( ( i_t4 + i_t5 ) >> 8 ) & 0xFF; + p_key[4] = ( ( i_t4 + i_t5 ) >> 16 ) & 0xFF; + i_exit = i_try + 1; + } + } + } + } + + if( i_exit >= 0 ) + { + p_key[0] ^= p_sector_seed[0]; + p_key[1] ^= p_sector_seed[1]; + p_key[2] ^= p_sector_seed[2]; + p_key[3] ^= p_sector_seed[3]; + p_key[4] ^= p_sector_seed[4]; + } + + return i_exit; +} + + +/****************************************************************************** + * Various pieces for the title crack engine. + ****************************************************************************** + * The length of the PES packet is located at 0x12-0x13. + * The the copyright protection bits are located at 0x14 (bits 0x20 and 0x10). + * The data of the PES packet begins at 0x15 (if there isn't any PTS/DTS) + * or at 0x?? if there are both PTS and DTS's. + * The seed value used with the unscrambling key is the 5 bytes at 0x54-0x58. + * The scrambled part of a sector begins at 0x80. + *****************************************************************************/ + +/* Statistics */ +static int i_tries = 0, i_success = 0; + +/***************************************************************************** + * CrackTitleKey: try to crack title key from the contents of a VOB. + ***************************************************************************** + * This function is called by dvdcss_titlekey to find a title key, if we've + * chosen to crack title key instead of decrypting it with the disc key. + * The DVD should have been opened and be in an authenticated state. + * i_pos is the starting sector, i_len is the maximum number of sectors to read + *****************************************************************************/ +static int CrackTitleKey( dvdcss_t dvdcss, int i_pos, int i_len, + dvd_key p_titlekey ) +{ + uint8_t p_buf[ DVDCSS_BLOCK_SIZE ]; + const uint8_t p_packstart[4] = { 0x00, 0x00, 0x01, 0xba }; + int i_reads = 0; + int i_encrypted = 0; + int b_stop_scanning = 0; + int b_read_error = 0; + int i_ret; + + print_debug( dvdcss, "cracking title key at block %i", i_pos ); + + i_tries = 0; + i_success = 0; + + do + { + i_ret = dvdcss->pf_seek( dvdcss, i_pos ); + + if( i_ret != i_pos ) + { + print_error( dvdcss, "seek failed" ); + } + + i_ret = dvdcss_read( dvdcss, p_buf, 1, DVDCSS_NOFLAGS ); + + /* Either we are at the end of the physical device or the auth + * have failed / were not done and we got a read error. */ + if( i_ret <= 0 ) + { + if( i_ret == 0 ) + { + print_debug( dvdcss, "read returned 0 (end of device?)" ); + } + else if( !b_read_error ) + { + print_debug( dvdcss, "read error at block %i, resorting to " + "arcane secrets to recover", i_pos ); + + /* Reset the drive before trying to continue */ + dvdcss_close_device( dvdcss ); + dvdcss_open_device( dvdcss ); + + b_read_error = 1; + continue; + } + break; + } + + /* Stop when we find a non-MPEG stream block. + * (We must have reached the end of the stream). + * For now, allow all blocks that begin with a start code. */ + if( memcmp( p_buf, p_packstart, 3 ) ) + { + print_debug( dvdcss, "block %i is a non-MPEG block " + "(end of title)", i_pos ); + break; + } + + if( p_buf[0x0d] & 0x07 ) + print_debug( dvdcss, "stuffing in pack header" ); + + /* PES_scrambling_control does not exist in a system_header, + * a padding_stream or a private_stream2 (and others?). */ + if( p_buf[0x14] & 0x30 && ! ( p_buf[0x11] == 0xbb + || p_buf[0x11] == 0xbe + || p_buf[0x11] == 0xbf ) ) + { + i_encrypted++; + + if( AttackPattern( p_buf, p_titlekey ) > 0 ) + { + b_stop_scanning = 1; + } +#if 0 + if( AttackPadding( p_buf ) > 0 ) + { + b_stop_scanning = 1; + } +#endif /* 0 */ + } + + i_pos++; + i_len--; + i_reads++; + + /* Emit a progress indication now and then. */ + if( !( i_reads & 0xfff ) ) + { + print_debug( dvdcss, "at block %i, still cracking...", i_pos ); + } + + /* Stop after 2000 blocks if we haven't seen any encrypted blocks. */ + if( i_reads >= 2000 && i_encrypted == 0 ) break; + + } while( !b_stop_scanning && i_len > 0); + + if( !b_stop_scanning ) + { + print_debug( dvdcss, "end of title reached" ); + } + + /* Print some statistics. */ + print_debug( dvdcss, "successful attempts %d/%d, scrambled blocks %d/%d", + i_success, i_tries, i_encrypted, i_reads ); + + if( i_success > 0 /* b_stop_scanning */ ) + { + print_debug( dvdcss, "Video Title Set (VTS) key initialized" ); + return 1; + } + + if( i_encrypted == 0 && i_reads > 0 ) + { + memset( p_titlekey, 0, DVD_KEY_SIZE ); + print_debug( dvdcss, "no scrambled sectors found" ); + return 0; + } + + memset( p_titlekey, 0, DVD_KEY_SIZE ); + return -1; +} + + +/****************************************************************************** + * The original Ethan Hawke (DeCSSPlus) attack (modified). + ****************************************************************************** + * Tries to find a repeating pattern just before the encrypted part starts. + * Then it guesses that the plain text for first encrypted bytes are + * a continuation of that pattern. + *****************************************************************************/ +static int AttackPattern( const uint8_t p_sec[ DVDCSS_BLOCK_SIZE ], + uint8_t *p_key ) +{ + unsigned int i_best_plen = 0; + unsigned int i_best_p = 0; + unsigned int i, j; + + /* For all cycle length from 2 to 48 */ + for( i = 2 ; i < 0x30 ; i++ ) + { + /* Find the number of bytes that repeats in cycles. */ + for( j = i + 1; + j < 0x80 && ( p_sec[0x7F - (j%i)] == p_sec[0x7F - j] ); + j++ ) + { + /* We have found j repeating bytes with a cycle length i. */ + if( j > i_best_plen ) + { + i_best_plen = j; + i_best_p = i; + } + } + } + + /* We need at most 10 plain text bytes?, so a make sure that we + * have at least 20 repeated bytes and that they have cycled at + * least one time. */ + if( ( i_best_plen > 3 ) && ( i_best_plen / i_best_p >= 2) ) + { + int res; + + i_tries++; + memset( p_key, 0, DVD_KEY_SIZE ); + res = RecoverTitleKey( 0, &p_sec[0x80], + &p_sec[ 0x80 - (i_best_plen / i_best_p) * i_best_p ], + &p_sec[0x54] /* key_seed */, p_key ); + i_success += ( res >= 0 ); + return ( res >= 0 ); + } + + return 0; +} + + +#if 0 +/****************************************************************************** + * Encrypted Padding_stream attack. + ****************************************************************************** + * DVD specifies that there must only be one type of data in every sector. + * Every sector is one pack and so must obviously be 2048 bytes long. + * For the last piece of video data before a VOBU boundary there might not + * be exactly the right amount of data to fill a sector. Then one has to + * pad the pack to 2048 bytes. For just a few bytes this is done in the + * header but for any large amount you insert a PES packet from the + * Padding stream. This looks like 0x00 00 01 be xx xx ff ff ... + * where xx xx is the length of the padding stream. + *****************************************************************************/ +static int AttackPadding( const uint8_t p_sec[ DVDCSS_BLOCK_SIZE ] ) +{ + unsigned int i_pes_length; + /*static int i_tries = 0, i_success = 0;*/ + + i_pes_length = (p_sec[0x12]<<8) | p_sec[0x13]; + + /* Covered by the test below but useful for debugging. */ + if( i_pes_length == DVDCSS_BLOCK_SIZE - 0x14 ) return 0; + + /* There must be room for at least 4? bytes of padding stream, + * and it must be encrypted. + * sector size - pack/pes header - padding startcode - padding length */ + if( ( DVDCSS_BLOCK_SIZE - 0x14 - 4 - 2 - i_pes_length < 4 ) || + ( p_sec[0x14 + i_pes_length + 0] == 0x00 && + p_sec[0x14 + i_pes_length + 1] == 0x00 && + p_sec[0x14 + i_pes_length + 2] == 0x01 ) ) + { + fprintf( stderr, "plain %d %02x:%02x:%02x:%02x (type %02x sub %02x)\n", + DVDCSS_BLOCK_SIZE - 0x14 - 4 - 2 - i_pes_length, + p_sec[0x14 + i_pes_length + 0], + p_sec[0x14 + i_pes_length + 1], + p_sec[0x14 + i_pes_length + 2], + p_sec[0x14 + i_pes_length + 3], + p_sec[0x11], p_sec[0x17 + p_sec[0x16]]); + return 0; + } + + /* If we are here we know that there is a where in the pack a + encrypted PES header is (startcode + length). It's never more + than two packets in the pack, so we 'know' the length. The + plaintext at offset (0x14 + i_pes_length) will then be + 00 00 01 e0/bd/be xx xx, in the case of be the following bytes + are also known. */ + + /* An encrypted SPU PES packet with another encrypted PES packet following. + Normally if the following was a padding stream that would be in plain + text. So it will be another SPU PES packet. */ + if( p_sec[0x11] == 0xbd && + p_sec[0x17 + p_sec[0x16]] >= 0x20 && + p_sec[0x17 + p_sec[0x16]] <= 0x3f ) + { + i_tries++; + } + + /* A Video PES packet with another encrypted PES packet following. + * No reason except for time stamps to break the data into two packets. + * So it's likely that the following PES packet is a padding stream. */ + if( p_sec[0x11] == 0xe0 ) + { + i_tries++; + } + + return 0; +} +#endif /* 0 */ diff --git a/src/css.h b/src/css.h new file mode 100644 index 0000000..de8da24 --- /dev/null +++ b/src/css.h @@ -0,0 +1,65 @@ +/***************************************************************************** + * css.h: Structures for DVD authentication and unscrambling + ***************************************************************************** + * Copyright (C) 1999-2001 VideoLAN + * + * Author: Stéphane Borel + * + * based on: + * - css-auth by Derek Fawcus + * - DVD CSS ioctls example program by Andrew T. Veliath + * - DeCSSPlus by Ethan Hawke + * - The Divide and conquer attack by Frank A. Stevenson + * + * libdvdcss 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. + * + * libdvdcss 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 libdvdcss; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + *****************************************************************************/ + +#ifndef DVDCSS_CSS_H +#define DVDCSS_CSS_H + +#include + +#include "dvdcss/dvdcss.h" + +#define CACHE_FILENAME_LENGTH_STRING "10" + +#define DVD_KEY_SIZE 5 + +typedef uint8_t dvd_key[DVD_KEY_SIZE]; + +typedef struct dvd_title +{ + int i_startlb; + dvd_key p_key; + struct dvd_title *p_next; +} dvd_title; + +typedef struct css +{ + int i_agid; /* Current Authentication Grant ID. */ + dvd_key p_bus_key; /* Current session key. */ + dvd_key p_disc_key; /* This DVD disc's key. */ + dvd_key p_title_key; /* Current title key. */ +} css; + +/***************************************************************************** + * Prototypes in css.c + *****************************************************************************/ +int dvdcss_test ( dvdcss_t ); +int dvdcss_title ( dvdcss_t, int ); +int dvdcss_disckey ( dvdcss_t ); +int dvdcss_unscramble ( uint8_t *, uint8_t * ); + +#endif /* DVDCSS_CSS_H */ diff --git a/src/csstables.h b/src/csstables.h new file mode 100644 index 0000000..14c5e27 --- /dev/null +++ b/src/csstables.h @@ -0,0 +1,396 @@ +/***************************************************************************** + * csstables.h: CSS Tables for DVD unscrambling + ***************************************************************************** + * Copyright (C) 1999-2001 VideoLAN + * + * Author: Stéphane Borel + * + * based on: + * - css-auth by Derek Fawcus + * - DVD CSS ioctls example program by Andrew T. Veliath + * - The Divide and conquer attack by Frank A. Stevenson + * - DeCSSPlus by Ethan Hawke + * - DecVOB + * see http://www.lemuria.org/DeCSS/ by Tom Vogt for more information. + * + * libdvdcss 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. + * + * libdvdcss 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 libdvdcss; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + *****************************************************************************/ + +#ifndef DVDCSS_CSSTABLES_H +#define DVDCSS_CSSTABLES_H + +#include + +static const uint8_t p_css_tab1[ 256 ] = +{ + 0x33, 0x73, 0x3b, 0x26, 0x63, 0x23, 0x6b, 0x76, + 0x3e, 0x7e, 0x36, 0x2b, 0x6e, 0x2e, 0x66, 0x7b, + 0xd3, 0x93, 0xdb, 0x06, 0x43, 0x03, 0x4b, 0x96, + 0xde, 0x9e, 0xd6, 0x0b, 0x4e, 0x0e, 0x46, 0x9b, + 0x57, 0x17, 0x5f, 0x82, 0xc7, 0x87, 0xcf, 0x12, + 0x5a, 0x1a, 0x52, 0x8f, 0xca, 0x8a, 0xc2, 0x1f, + 0xd9, 0x99, 0xd1, 0x00, 0x49, 0x09, 0x41, 0x90, + 0xd8, 0x98, 0xd0, 0x01, 0x48, 0x08, 0x40, 0x91, + 0x3d, 0x7d, 0x35, 0x24, 0x6d, 0x2d, 0x65, 0x74, + 0x3c, 0x7c, 0x34, 0x25, 0x6c, 0x2c, 0x64, 0x75, + 0xdd, 0x9d, 0xd5, 0x04, 0x4d, 0x0d, 0x45, 0x94, + 0xdc, 0x9c, 0xd4, 0x05, 0x4c, 0x0c, 0x44, 0x95, + 0x59, 0x19, 0x51, 0x80, 0xc9, 0x89, 0xc1, 0x10, + 0x58, 0x18, 0x50, 0x81, 0xc8, 0x88, 0xc0, 0x11, + 0xd7, 0x97, 0xdf, 0x02, 0x47, 0x07, 0x4f, 0x92, + 0xda, 0x9a, 0xd2, 0x0f, 0x4a, 0x0a, 0x42, 0x9f, + 0x53, 0x13, 0x5b, 0x86, 0xc3, 0x83, 0xcb, 0x16, + 0x5e, 0x1e, 0x56, 0x8b, 0xce, 0x8e, 0xc6, 0x1b, + 0xb3, 0xf3, 0xbb, 0xa6, 0xe3, 0xa3, 0xeb, 0xf6, + 0xbe, 0xfe, 0xb6, 0xab, 0xee, 0xae, 0xe6, 0xfb, + 0x37, 0x77, 0x3f, 0x22, 0x67, 0x27, 0x6f, 0x72, + 0x3a, 0x7a, 0x32, 0x2f, 0x6a, 0x2a, 0x62, 0x7f, + 0xb9, 0xf9, 0xb1, 0xa0, 0xe9, 0xa9, 0xe1, 0xf0, + 0xb8, 0xf8, 0xb0, 0xa1, 0xe8, 0xa8, 0xe0, 0xf1, + 0x5d, 0x1d, 0x55, 0x84, 0xcd, 0x8d, 0xc5, 0x14, + 0x5c, 0x1c, 0x54, 0x85, 0xcc, 0x8c, 0xc4, 0x15, + 0xbd, 0xfd, 0xb5, 0xa4, 0xed, 0xad, 0xe5, 0xf4, + 0xbc, 0xfc, 0xb4, 0xa5, 0xec, 0xac, 0xe4, 0xf5, + 0x39, 0x79, 0x31, 0x20, 0x69, 0x29, 0x61, 0x70, + 0x38, 0x78, 0x30, 0x21, 0x68, 0x28, 0x60, 0x71, + 0xb7, 0xf7, 0xbf, 0xa2, 0xe7, 0xa7, 0xef, 0xf2, + 0xba, 0xfa, 0xb2, 0xaf, 0xea, 0xaa, 0xe2, 0xff +}; + +static const uint8_t p_css_tab2[ 256 ] = +{ + 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, + 0x09, 0x08, 0x0b, 0x0a, 0x0d, 0x0c, 0x0f, 0x0e, + 0x12, 0x13, 0x10, 0x11, 0x16, 0x17, 0x14, 0x15, + 0x1b, 0x1a, 0x19, 0x18, 0x1f, 0x1e, 0x1d, 0x1c, + 0x24, 0x25, 0x26, 0x27, 0x20, 0x21, 0x22, 0x23, + 0x2d, 0x2c, 0x2f, 0x2e, 0x29, 0x28, 0x2b, 0x2a, + 0x36, 0x37, 0x34, 0x35, 0x32, 0x33, 0x30, 0x31, + 0x3f, 0x3e, 0x3d, 0x3c, 0x3b, 0x3a, 0x39, 0x38, + 0x49, 0x48, 0x4b, 0x4a, 0x4d, 0x4c, 0x4f, 0x4e, + 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, + 0x5b, 0x5a, 0x59, 0x58, 0x5f, 0x5e, 0x5d, 0x5c, + 0x52, 0x53, 0x50, 0x51, 0x56, 0x57, 0x54, 0x55, + 0x6d, 0x6c, 0x6f, 0x6e, 0x69, 0x68, 0x6b, 0x6a, + 0x64, 0x65, 0x66, 0x67, 0x60, 0x61, 0x62, 0x63, + 0x7f, 0x7e, 0x7d, 0x7c, 0x7b, 0x7a, 0x79, 0x78, + 0x76, 0x77, 0x74, 0x75, 0x72, 0x73, 0x70, 0x71, + 0x92, 0x93, 0x90, 0x91, 0x96, 0x97, 0x94, 0x95, + 0x9b, 0x9a, 0x99, 0x98, 0x9f, 0x9e, 0x9d, 0x9c, + 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, + 0x89, 0x88, 0x8b, 0x8a, 0x8d, 0x8c, 0x8f, 0x8e, + 0xb6, 0xb7, 0xb4, 0xb5, 0xb2, 0xb3, 0xb0, 0xb1, + 0xbf, 0xbe, 0xbd, 0xbc, 0xbb, 0xba, 0xb9, 0xb8, + 0xa4, 0xa5, 0xa6, 0xa7, 0xa0, 0xa1, 0xa2, 0xa3, + 0xad, 0xac, 0xaf, 0xae, 0xa9, 0xa8, 0xab, 0xaa, + 0xdb, 0xda, 0xd9, 0xd8, 0xdf, 0xde, 0xdd, 0xdc, + 0xd2, 0xd3, 0xd0, 0xd1, 0xd6, 0xd7, 0xd4, 0xd5, + 0xc9, 0xc8, 0xcb, 0xca, 0xcd, 0xcc, 0xcf, 0xce, + 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, + 0xff, 0xfe, 0xfd, 0xfc, 0xfb, 0xfa, 0xf9, 0xf8, + 0xf6, 0xf7, 0xf4, 0xf5, 0xf2, 0xf3, 0xf0, 0xf1, + 0xed, 0xec, 0xef, 0xee, 0xe9, 0xe8, 0xeb, 0xea, + 0xe4, 0xe5, 0xe6, 0xe7, 0xe0, 0xe1, 0xe2, 0xe3 +}; + +static const uint8_t p_css_tab3[ 512 ] = +{ + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff, + 0x00, 0x24, 0x49, 0x6d, 0x92, 0xb6, 0xdb, 0xff +}; + +static const uint8_t p_css_tab4[ 256 ] = +{ + 0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0, + 0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0, + 0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8, + 0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8, + 0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4, + 0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4, + 0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec, + 0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc, + 0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2, + 0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2, + 0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea, + 0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa, + 0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6, + 0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6, + 0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee, + 0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe, + 0x01, 0x81, 0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1, + 0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1, + 0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9, + 0x19, 0x99, 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9, + 0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5, + 0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5, + 0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed, + 0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd, + 0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3, + 0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3, + 0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb, + 0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb, + 0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7, + 0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7, + 0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef, + 0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff +}; + +static const uint8_t p_css_tab5[ 256 ] = +{ + 0xff, 0x7f, 0xbf, 0x3f, 0xdf, 0x5f, 0x9f, 0x1f, + 0xef, 0x6f, 0xaf, 0x2f, 0xcf, 0x4f, 0x8f, 0x0f, + 0xf7, 0x77, 0xb7, 0x37, 0xd7, 0x57, 0x97, 0x17, + 0xe7, 0x67, 0xa7, 0x27, 0xc7, 0x47, 0x87, 0x07, + 0xfb, 0x7b, 0xbb, 0x3b, 0xdb, 0x5b, 0x9b, 0x1b, + 0xeb, 0x6b, 0xab, 0x2b, 0xcb, 0x4b, 0x8b, 0x0b, + 0xf3, 0x73, 0xb3, 0x33, 0xd3, 0x53, 0x93, 0x13, + 0xe3, 0x63, 0xa3, 0x23, 0xc3, 0x43, 0x83, 0x03, + 0xfd, 0x7d, 0xbd, 0x3d, 0xdd, 0x5d, 0x9d, 0x1d, + 0xed, 0x6d, 0xad, 0x2d, 0xcd, 0x4d, 0x8d, 0x0d, + 0xf5, 0x75, 0xb5, 0x35, 0xd5, 0x55, 0x95, 0x15, + 0xe5, 0x65, 0xa5, 0x25, 0xc5, 0x45, 0x85, 0x05, + 0xf9, 0x79, 0xb9, 0x39, 0xd9, 0x59, 0x99, 0x19, + 0xe9, 0x69, 0xa9, 0x29, 0xc9, 0x49, 0x89, 0x09, + 0xf1, 0x71, 0xb1, 0x31, 0xd1, 0x51, 0x91, 0x11, + 0xe1, 0x61, 0xa1, 0x21, 0xc1, 0x41, 0x81, 0x01, + 0xfe, 0x7e, 0xbe, 0x3e, 0xde, 0x5e, 0x9e, 0x1e, + 0xee, 0x6e, 0xae, 0x2e, 0xce, 0x4e, 0x8e, 0x0e, + 0xf6, 0x76, 0xb6, 0x36, 0xd6, 0x56, 0x96, 0x16, + 0xe6, 0x66, 0xa6, 0x26, 0xc6, 0x46, 0x86, 0x06, + 0xfa, 0x7a, 0xba, 0x3a, 0xda, 0x5a, 0x9a, 0x1a, + 0xea, 0x6a, 0xaa, 0x2a, 0xca, 0x4a, 0x8a, 0x0a, + 0xf2, 0x72, 0xb2, 0x32, 0xd2, 0x52, 0x92, 0x12, + 0xe2, 0x62, 0xa2, 0x22, 0xc2, 0x42, 0x82, 0x02, + 0xfc, 0x7c, 0xbc, 0x3c, 0xdc, 0x5c, 0x9c, 0x1c, + 0xec, 0x6c, 0xac, 0x2c, 0xcc, 0x4c, 0x8c, 0x0c, + 0xf4, 0x74, 0xb4, 0x34, 0xd4, 0x54, 0x94, 0x14, + 0xe4, 0x64, 0xa4, 0x24, 0xc4, 0x44, 0x84, 0x04, + 0xf8, 0x78, 0xb8, 0x38, 0xd8, 0x58, 0x98, 0x18, + 0xe8, 0x68, 0xa8, 0x28, 0xc8, 0x48, 0x88, 0x08, + 0xf0, 0x70, 0xb0, 0x30, 0xd0, 0x50, 0x90, 0x10, + 0xe0, 0x60, 0xa0, 0x20, 0xc0, 0x40, 0x80, 0x00 +}; + +static const uint8_t p_crypt_tab0[ 256 ] = +{ + 0xB7, 0xF4, 0x82, 0x57, 0xDA, 0x4D, 0xDB, 0xE2, + 0x2F, 0x52, 0x1A, 0xA8, 0x68, 0x5A, 0x8A, 0xFF, + 0xFB, 0x0E, 0x6D, 0x35, 0xF7, 0x5C, 0x76, 0x12, + 0xCE, 0x25, 0x79, 0x29, 0x39, 0x62, 0x08, 0x24, + 0xA5, 0x85, 0x7B, 0x56, 0x01, 0x23, 0x68, 0xCF, + 0x0A, 0xE2, 0x5A, 0xED, 0x3D, 0x59, 0xB0, 0xA9, + 0xB0, 0x2C, 0xF2, 0xB8, 0xEF, 0x32, 0xA9, 0x40, + 0x80, 0x71, 0xAF, 0x1E, 0xDE, 0x8F, 0x58, 0x88, + 0xB8, 0x3A, 0xD0, 0xFC, 0xC4, 0x1E, 0xB5, 0xA0, + 0xBB, 0x3B, 0x0F, 0x01, 0x7E, 0x1F, 0x9F, 0xD9, + 0xAA, 0xB8, 0x3D, 0x9D, 0x74, 0x1E, 0x25, 0xDB, + 0x37, 0x56, 0x8F, 0x16, 0xBA, 0x49, 0x2B, 0xAC, + 0xD0, 0xBD, 0x95, 0x20, 0xBE, 0x7A, 0x28, 0xD0, + 0x51, 0x64, 0x63, 0x1C, 0x7F, 0x66, 0x10, 0xBB, + 0xC4, 0x56, 0x1A, 0x04, 0x6E, 0x0A, 0xEC, 0x9C, + 0xD6, 0xE8, 0x9A, 0x7A, 0xCF, 0x8C, 0xDB, 0xB1, + 0xEF, 0x71, 0xDE, 0x31, 0xFF, 0x54, 0x3E, 0x5E, + 0x07, 0x69, 0x96, 0xB0, 0xCF, 0xDD, 0x9E, 0x47, + 0xC7, 0x96, 0x8F, 0xE4, 0x2B, 0x59, 0xC6, 0xEE, + 0xB9, 0x86, 0x9A, 0x64, 0x84, 0x72, 0xE2, 0x5B, + 0xA2, 0x96, 0x58, 0x99, 0x50, 0x03, 0xF5, 0x38, + 0x4D, 0x02, 0x7D, 0xE7, 0x7D, 0x75, 0xA7, 0xB8, + 0x67, 0x87, 0x84, 0x3F, 0x1D, 0x11, 0xE5, 0xFC, + 0x1E, 0xD3, 0x83, 0x16, 0xA5, 0x29, 0xF6, 0xC7, + 0x15, 0x61, 0x29, 0x1A, 0x43, 0x4F, 0x9B, 0xAF, + 0xC5, 0x87, 0x34, 0x6C, 0x0F, 0x3B, 0xA8, 0x1D, + 0x45, 0x58, 0x25, 0xDC, 0xA8, 0xA3, 0x3B, 0xD1, + 0x79, 0x1B, 0x48, 0xF2, 0xE9, 0x93, 0x1F, 0xFC, + 0xDB, 0x2A, 0x90, 0xA9, 0x8A, 0x3D, 0x39, 0x18, + 0xA3, 0x8E, 0x58, 0x6C, 0xE0, 0x12, 0xBB, 0x25, + 0xCD, 0x71, 0x22, 0xA2, 0x64, 0xC6, 0xE7, 0xFB, + 0xAD, 0x94, 0x77, 0x04, 0x9A, 0x39, 0xCF, 0x7C +}; + +static const uint8_t p_crypt_tab1[ 256 ] = +{ + 0x8C, 0x47, 0xB0, 0xE1, 0xEB, 0xFC, 0xEB, 0x56, + 0x10, 0xE5, 0x2C, 0x1A, 0x5D, 0xEF, 0xBE, 0x4F, + 0x08, 0x75, 0x97, 0x4B, 0x0E, 0x25, 0x8E, 0x6E, + 0x39, 0x5A, 0x87, 0x53, 0xC4, 0x1F, 0xF4, 0x5C, + 0x4E, 0xE6, 0x99, 0x30, 0xE0, 0x42, 0x88, 0xAB, + 0xE5, 0x85, 0xBC, 0x8F, 0xD8, 0x3C, 0x54, 0xC9, + 0x53, 0x47, 0x18, 0xD6, 0x06, 0x5B, 0x41, 0x2C, + 0x67, 0x1E, 0x41, 0x74, 0x33, 0xE2, 0xB4, 0xE0, + 0x23, 0x29, 0x42, 0xEA, 0x55, 0x0F, 0x25, 0xB4, + 0x24, 0x2C, 0x99, 0x13, 0xEB, 0x0A, 0x0B, 0xC9, + 0xF9, 0x63, 0x67, 0x43, 0x2D, 0xC7, 0x7D, 0x07, + 0x60, 0x89, 0xD1, 0xCC, 0xE7, 0x94, 0x77, 0x74, + 0x9B, 0x7E, 0xD7, 0xE6, 0xFF, 0xBB, 0x68, 0x14, + 0x1E, 0xA3, 0x25, 0xDE, 0x3A, 0xA3, 0x54, 0x7B, + 0x87, 0x9D, 0x50, 0xCA, 0x27, 0xC3, 0xA4, 0x50, + 0x91, 0x27, 0xD4, 0xB0, 0x82, 0x41, 0x97, 0x79, + 0x94, 0x82, 0xAC, 0xC7, 0x8E, 0xA5, 0x4E, 0xAA, + 0x78, 0x9E, 0xE0, 0x42, 0xBA, 0x28, 0xEA, 0xB7, + 0x74, 0xAD, 0x35, 0xDA, 0x92, 0x60, 0x7E, 0xD2, + 0x0E, 0xB9, 0x24, 0x5E, 0x39, 0x4F, 0x5E, 0x63, + 0x09, 0xB5, 0xFA, 0xBF, 0xF1, 0x22, 0x55, 0x1C, + 0xE2, 0x25, 0xDB, 0xC5, 0xD8, 0x50, 0x03, 0x98, + 0xC4, 0xAC, 0x2E, 0x11, 0xB4, 0x38, 0x4D, 0xD0, + 0xB9, 0xFC, 0x2D, 0x3C, 0x08, 0x04, 0x5A, 0xEF, + 0xCE, 0x32, 0xFB, 0x4C, 0x92, 0x1E, 0x4B, 0xFB, + 0x1A, 0xD0, 0xE2, 0x3E, 0xDA, 0x6E, 0x7C, 0x4D, + 0x56, 0xC3, 0x3F, 0x42, 0xB1, 0x3A, 0x23, 0x4D, + 0x6E, 0x84, 0x56, 0x68, 0xF4, 0x0E, 0x03, 0x64, + 0xD0, 0xA9, 0x92, 0x2F, 0x8B, 0xBC, 0x39, 0x9C, + 0xAC, 0x09, 0x5E, 0xEE, 0xE5, 0x97, 0xBF, 0xA5, + 0xCE, 0xFA, 0x28, 0x2C, 0x6D, 0x4F, 0xEF, 0x77, + 0xAA, 0x1B, 0x79, 0x8E, 0x97, 0xB4, 0xC3, 0xF4 +}; + +static const uint8_t p_crypt_tab2[ 256 ] = +{ + 0xB7, 0x75, 0x81, 0xD5, 0xDC, 0xCA, 0xDE, 0x66, + 0x23, 0xDF, 0x15, 0x26, 0x62, 0xD1, 0x83, 0x77, + 0xE3, 0x97, 0x76, 0xAF, 0xE9, 0xC3, 0x6B, 0x8E, + 0xDA, 0xB0, 0x6E, 0xBF, 0x2B, 0xF1, 0x19, 0xB4, + 0x95, 0x34, 0x48, 0xE4, 0x37, 0x94, 0x5D, 0x7B, + 0x36, 0x5F, 0x65, 0x53, 0x07, 0xE2, 0x89, 0x11, + 0x98, 0x85, 0xD9, 0x12, 0xC1, 0x9D, 0x84, 0xEC, + 0xA4, 0xD4, 0x88, 0xB8, 0xFC, 0x2C, 0x79, 0x28, + 0xD8, 0xDB, 0xB3, 0x1E, 0xA2, 0xF9, 0xD0, 0x44, + 0xD7, 0xD6, 0x60, 0xEF, 0x14, 0xF4, 0xF6, 0x31, + 0xD2, 0x41, 0x46, 0x67, 0x0A, 0xE1, 0x58, 0x27, + 0x43, 0xA3, 0xF8, 0xE0, 0xC8, 0xBA, 0x5A, 0x5C, + 0x80, 0x6C, 0xC6, 0xF2, 0xE8, 0xAD, 0x7D, 0x04, + 0x0D, 0xB9, 0x3C, 0xC2, 0x25, 0xBD, 0x49, 0x63, + 0x8C, 0x9F, 0x51, 0xCE, 0x20, 0xC5, 0xA1, 0x50, + 0x92, 0x2D, 0xDD, 0xBC, 0x8D, 0x4F, 0x9A, 0x71, + 0x2F, 0x30, 0x1D, 0x73, 0x39, 0x13, 0xFB, 0x1A, + 0xCB, 0x24, 0x59, 0xFE, 0x05, 0x96, 0x57, 0x0F, + 0x1F, 0xCF, 0x54, 0xBE, 0xF5, 0x06, 0x1B, 0xB2, + 0x6D, 0xD3, 0x4D, 0x32, 0x56, 0x21, 0x33, 0x0B, + 0x52, 0xE7, 0xAB, 0xEB, 0xA6, 0x74, 0x00, 0x4C, + 0xB1, 0x7F, 0x82, 0x99, 0x87, 0x0E, 0x5E, 0xC0, + 0x8F, 0xEE, 0x6F, 0x55, 0xF3, 0x7E, 0x08, 0x90, + 0xFA, 0xB6, 0x64, 0x70, 0x47, 0x4A, 0x17, 0xA7, + 0xB5, 0x40, 0x8A, 0x38, 0xE5, 0x68, 0x3E, 0x8B, + 0x69, 0xAA, 0x9B, 0x42, 0xA5, 0x10, 0x01, 0x35, + 0xFD, 0x61, 0x9E, 0xE6, 0x16, 0x9C, 0x86, 0xED, + 0xCD, 0x2E, 0xFF, 0xC4, 0x5B, 0xA0, 0xAE, 0xCC, + 0x4B, 0x3B, 0x03, 0xBB, 0x1C, 0x2A, 0xAC, 0x0C, + 0x3F, 0x93, 0xC7, 0x72, 0x7A, 0x09, 0x22, 0x3D, + 0x45, 0x78, 0xA9, 0xA8, 0xEA, 0xC9, 0x6A, 0xF7, + 0x29, 0x91, 0xF0, 0x02, 0x18, 0x3A, 0x4E, 0x7C +}; + +static const uint8_t p_crypt_tab3[ 288 ] = +{ + 0x73, 0x51, 0x95, 0xE1, 0x12, 0xE4, 0xC0, 0x58, + 0xEE, 0xF2, 0x08, 0x1B, 0xA9, 0xFA, 0x98, 0x4C, + 0xA7, 0x33, 0xE2, 0x1B, 0xA7, 0x6D, 0xF5, 0x30, + 0x97, 0x1D, 0xF3, 0x02, 0x60, 0x5A, 0x82, 0x0F, + 0x91, 0xD0, 0x9C, 0x10, 0x39, 0x7A, 0x83, 0x85, + 0x3B, 0xB2, 0xB8, 0xAE, 0x0C, 0x09, 0x52, 0xEA, + 0x1C, 0xE1, 0x8D, 0x66, 0x4F, 0xF3, 0xDA, 0x92, + 0x29, 0xB9, 0xD5, 0xC5, 0x77, 0x47, 0x22, 0x53, + 0x14, 0xF7, 0xAF, 0x22, 0x64, 0xDF, 0xC6, 0x72, + 0x12, 0xF3, 0x75, 0xDA, 0xD7, 0xD7, 0xE5, 0x02, + 0x9E, 0xED, 0xDA, 0xDB, 0x4C, 0x47, 0xCE, 0x91, + 0x06, 0x06, 0x6D, 0x55, 0x8B, 0x19, 0xC9, 0xEF, + 0x8C, 0x80, 0x1A, 0x0E, 0xEE, 0x4B, 0xAB, 0xF2, + 0x08, 0x5C, 0xE9, 0x37, 0x26, 0x5E, 0x9A, 0x90, + 0x00, 0xF3, 0x0D, 0xB2, 0xA6, 0xA3, 0xF7, 0x26, + 0x17, 0x48, 0x88, 0xC9, 0x0E, 0x2C, 0xC9, 0x02, + 0xE7, 0x18, 0x05, 0x4B, 0xF3, 0x39, 0xE1, 0x20, + 0x02, 0x0D, 0x40, 0xC7, 0xCA, 0xB9, 0x48, 0x30, + 0x57, 0x67, 0xCC, 0x06, 0xBF, 0xAC, 0x81, 0x08, + 0x24, 0x7A, 0xD4, 0x8B, 0x19, 0x8E, 0xAC, 0xB4, + 0x5A, 0x0F, 0x73, 0x13, 0xAC, 0x9E, 0xDA, 0xB6, + 0xB8, 0x96, 0x5B, 0x60, 0x88, 0xE1, 0x81, 0x3F, + 0x07, 0x86, 0x37, 0x2D, 0x79, 0x14, 0x52, 0xEA, + 0x73, 0xDF, 0x3D, 0x09, 0xC8, 0x25, 0x48, 0xD8, + 0x75, 0x60, 0x9A, 0x08, 0x27, 0x4A, 0x2C, 0xB9, + 0xA8, 0x8B, 0x8A, 0x73, 0x62, 0x37, 0x16, 0x02, + 0xBD, 0xC1, 0x0E, 0x56, 0x54, 0x3E, 0x14, 0x5F, + 0x8C, 0x8F, 0x6E, 0x75, 0x1C, 0x07, 0x39, 0x7B, + 0x4B, 0xDB, 0xD3, 0x4B, 0x1E, 0xC8, 0x7E, 0xFE, + 0x3E, 0x72, 0x16, 0x83, 0x7D, 0xEE, 0xF5, 0xCA, + 0xC5, 0x18, 0xF9, 0xD8, 0x68, 0xAB, 0x38, 0x85, + 0xA8, 0xF0, 0xA1, 0x73, 0x9F, 0x5D, 0x19, 0x0B, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x33, 0x72, 0x39, 0x25, 0x67, 0x26, 0x6D, 0x71, + 0x36, 0x77, 0x3C, 0x20, 0x62, 0x23, 0x68, 0x74, + 0xC3, 0x82, 0xC9, 0x15, 0x57, 0x16, 0x5D, 0x81 +}; + +#endif /* DVDCSS_CSSTABLES_H */ diff --git a/src/device.c b/src/device.c new file mode 100644 index 0000000..34b610b --- /dev/null +++ b/src/device.c @@ -0,0 +1,889 @@ +/***************************************************************************** + * device.h: DVD device access + ***************************************************************************** + * Copyright (C) 1998-2006 VideoLAN + * + * Authors: Stéphane Borel + * Sam Hocevar + * Håkan Hjort + * + * libdvdcss 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. + * + * libdvdcss 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 libdvdcss; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + *****************************************************************************/ + +/***************************************************************************** + * Preamble + *****************************************************************************/ +#include "config.h" + +#include +#include +#include +#include +#ifdef HAVE_ERRNO_H +# include +#endif +#include +#include +#ifdef HAVE_SYS_PARAM_H +# include +#endif +#include + +#ifdef HAVE_UNISTD_H +# include +#endif + +#ifdef DARWIN_DVD_IOCTL +# include +# include +# include +# include +# include +# include +# include +#endif + +#ifdef __OS2__ +# define INCL_DOS +# define INCL_DOSDEVIOCTL +# include +# include /* setmode() */ +# include /* O_BINARY */ +#endif + +#ifdef _WIN32 +# include +#endif + +#include "dvdcss/dvdcss.h" + +#include "common.h" +#include "css.h" +#include "libdvdcss.h" +#include "ioctl.h" +#include "device.h" + +/***************************************************************************** + * Device reading prototypes + *****************************************************************************/ +static int libc_open ( dvdcss_t, const char * ); +static int libc_seek ( dvdcss_t, int ); +static int libc_read ( dvdcss_t, void *, int ); +static int libc_readv ( dvdcss_t, const struct iovec *, int ); + +static int stream_seek ( dvdcss_t, int ); +static int stream_read ( dvdcss_t, void *, int ); +static int stream_readv ( dvdcss_t, const struct iovec *, int ); + +#ifdef _WIN32 +static int win2k_open ( dvdcss_t, const char * ); +static int win2k_seek ( dvdcss_t, int ); +static int win2k_read ( dvdcss_t, void *, int ); +static int win2k_readv ( dvdcss_t, const struct iovec *, int ); + +#elif defined( __OS2__ ) +static int os2_open ( dvdcss_t, const char * ); +#endif + +int dvdcss_use_ioctls( dvdcss_t dvdcss ) +{ + if( dvdcss->p_stream ) + return 0; + +#if defined( _WIN32 ) + if( dvdcss->b_file ) + { + return 0; + } + + /* FIXME: implement this for Windows */ + return 1; +#elif defined( __OS2__ ) + ULONG ulMode; + + if( DosQueryFHState( dvdcss->i_fd, &ulMode ) != 0 ) + return 1; /* What to do? Be conservative and try to use the ioctls */ + + if( ulMode & OPEN_FLAGS_DASD ) + return 1; + + return 0; +#else + struct stat fileinfo; + int ret; + + ret = fstat( dvdcss->i_fd, &fileinfo ); + if( ret < 0 ) + { + return 1; /* What to do? Be conservative and try to use the ioctls */ + } + + /* Complete this list and check that we test for the right things + * (I've assumed for all OSs that 'r', (raw) device, are char devices + * and those that don't contain/use an 'r' in the name are block devices) + * + * Linux needs a block device + * Solaris needs a char device + * Darwin needs a char device + * OpenBSD needs a char device + * NetBSD needs a char device + * FreeBSD can use either the block or the char device + */ + + /* Check if this is a block/char device */ + if( S_ISBLK( fileinfo.st_mode ) || + S_ISCHR( fileinfo.st_mode ) ) + { + return 1; + } + else + { + return 0; + } +#endif +} + +void dvdcss_check_device ( dvdcss_t dvdcss ) +{ +#if defined( _WIN32 ) + DWORD drives; + int i; +#elif defined( DARWIN_DVD_IOCTL ) + io_object_t next_media; + mach_port_t master_port; + kern_return_t kern_result; + io_iterator_t media_iterator; + CFMutableDictionaryRef classes_to_match; +#elif defined( __OS2__ ) +#pragma pack( 1 ) + struct + { + BYTE bCmdInfo; + BYTE bDrive; + } param; + + struct + { + BYTE abEBPB[31]; + USHORT usCylinders; + BYTE bDevType; + USHORT usDevAttr; + } data; +#pragma pack() + + ULONG ulParamLen; + ULONG ulDataLen; + ULONG rc; + + int i; +#else + const char *ppsz_devices[] = { "/dev/dvd", "/dev/cdrom", "/dev/hdc", NULL }; + int i, i_fd; +#endif + + /* If the device name is non-NULL or stream is set, return. */ + if( (dvdcss->psz_device && dvdcss->psz_device[0]) || dvdcss->p_stream ) + { + return; + } + +#if defined( _WIN32 ) + drives = GetLogicalDrives(); + + for( i = 0; drives; i++ ) + { + char psz_device[5]; + DWORD cur = 1 << i; + UINT i_ret; + + if( (drives & cur) == 0 ) + { + continue; + } + drives &= ~cur; + + sprintf( psz_device, "%c:\\", 'A' + i ); + i_ret = GetDriveType( psz_device ); + if( i_ret != DRIVE_CDROM ) + { + continue; + } + + /* Remove trailing backslash */ + psz_device[2] = '\0'; + + /* FIXME: we want to differentiate between CD and DVD drives + * using DeviceIoControl() */ + print_debug( dvdcss, "defaulting to drive `%s'", psz_device ); + free( dvdcss->psz_device ); + dvdcss->psz_device = strdup( psz_device ); + return; + } +#elif defined( DARWIN_DVD_IOCTL ) + + kern_result = IOMasterPort( MACH_PORT_NULL, &master_port ); + if( kern_result != KERN_SUCCESS ) + { + return; + } + + classes_to_match = IOServiceMatching( kIODVDMediaClass ); + if( classes_to_match == NULL ) + { + return; + } + + CFDictionarySetValue( classes_to_match, CFSTR( kIOMediaEjectableKey ), + kCFBooleanTrue ); + + kern_result = IOServiceGetMatchingServices( master_port, classes_to_match, + &media_iterator ); + if( kern_result != KERN_SUCCESS ) + { + return; + } + + next_media = IOIteratorNext( media_iterator ); + for( ; ; ) + { + char psz_buf[0x32]; + size_t i_pathlen; + CFTypeRef psz_path; + + next_media = IOIteratorNext( media_iterator ); + if( next_media == 0 ) + { + break; + } + + psz_path = IORegistryEntryCreateCFProperty( next_media, + CFSTR( kIOBSDNameKey ), + kCFAllocatorDefault, + 0 ); + if( psz_path == NULL ) + { + IOObjectRelease( next_media ); + continue; + } + + snprintf( psz_buf, sizeof(psz_buf), "%s%c", _PATH_DEV, 'r' ); + i_pathlen = strlen( psz_buf ); + + if( CFStringGetCString( psz_path, + (char*)&psz_buf + i_pathlen, + sizeof(psz_buf) - i_pathlen, + kCFStringEncodingASCII ) ) + { + print_debug( dvdcss, "defaulting to drive `%s'", psz_buf ); + CFRelease( psz_path ); + IOObjectRelease( next_media ); + IOObjectRelease( media_iterator ); + free( dvdcss->psz_device ); + dvdcss->psz_device = strdup( psz_buf ); + return; + } + + CFRelease( psz_path ); + + IOObjectRelease( next_media ); + } + + IOObjectRelease( media_iterator ); +#elif defined( __OS2__ ) + for( i = 0; i < 26; i++ ) + { + param.bCmdInfo = 0; + param.bDrive = i; + + rc = DosDevIOCtl( ( HFILE )-1, IOCTL_DISK, DSK_GETDEVICEPARAMS, + ¶m, sizeof( param ), &ulParamLen, + &data, sizeof( data ), &ulDataLen ); + + if( rc == 0 ) + { + /* Check for removable and for cylinders */ + if( ( data.usDevAttr & 1 ) == 0 && data.usCylinders == 0xFFFF ) + { + char psz_dvd[] = "A:"; + + psz_dvd[0] += i; + + print_debug( dvdcss, "defaulting to drive `%s'", psz_dvd ); + free( dvdcss->psz_device ); + dvdcss->psz_device = strdup( psz_dvd ); + return; + } + } + } +#else + for( i = 0; ppsz_devices[i]; i++ ) + { + i_fd = open( ppsz_devices[i], 0 ); + if( i_fd != -1 ) + { + print_debug( dvdcss, "defaulting to drive `%s'", ppsz_devices[i] ); + close( i_fd ); + free( dvdcss->psz_device ); + dvdcss->psz_device = strdup( ppsz_devices[i] ); + return; + } + } +#endif + + print_error( dvdcss, "could not find a suitable default drive" ); +} + +int dvdcss_open_device ( dvdcss_t dvdcss ) +{ + const char *psz_device = getenv( "DVDCSS_RAW_DEVICE" ); + if( !psz_device ) + { + psz_device = dvdcss->psz_device; + } + print_debug( dvdcss, "opening target `%s'", psz_device ); + +#if defined( _WIN32 ) + /* Initialize readv temporary buffer */ + dvdcss->p_readv_buffer = NULL; + dvdcss->i_readv_buf_size = 0; +#endif + + /* if callback functions are initialized */ + if( dvdcss->p_stream ) + { + print_debug( dvdcss, "using stream API for access" ); + dvdcss->pf_seek = stream_seek; + dvdcss->pf_read = stream_read; + dvdcss->pf_readv = stream_readv; + return 0; + } + +#if defined( _WIN32 ) + dvdcss->b_file = 1; + /* If device is "X:" or "X:\", we are not actually opening a file. */ + if (psz_device[0] && psz_device[1] == ':' && + (!psz_device[2] || (psz_device[2] == '\\' && !psz_device[3]))) + dvdcss->b_file = 0; + + if( !dvdcss->b_file ) + { + print_debug( dvdcss, "using Win2K API for access" ); + dvdcss->pf_seek = win2k_seek; + dvdcss->pf_read = win2k_read; + dvdcss->pf_readv = win2k_readv; + return win2k_open( dvdcss, psz_device ); + } + else +#elif defined( __OS2__ ) + /* If device is "X:" or "X:\", we are not actually opening a file. */ + if( psz_device[0] && psz_device[1] == ':' && + ( !psz_device[2] || ( psz_device[2] == '\\' && !psz_device[3] ) ) ) + { + print_debug( dvdcss, "using OS/2 API for access" ); + dvdcss->pf_seek = libc_seek; + dvdcss->pf_read = libc_read; + dvdcss->pf_readv = libc_readv; + return os2_open( dvdcss, psz_device ); + } + else +#endif + { + print_debug( dvdcss, "using libc API for access" ); + dvdcss->pf_seek = libc_seek; + dvdcss->pf_read = libc_read; + dvdcss->pf_readv = libc_readv; + return libc_open( dvdcss, psz_device ); + } +} + +int dvdcss_close_device ( dvdcss_t dvdcss ) +{ + if( dvdcss->p_stream ) + { + return 0; + } + +#if defined( _WIN32 ) + /* Free readv temporary buffer */ + free( dvdcss->p_readv_buffer ); + dvdcss->p_readv_buffer = NULL; + dvdcss->i_readv_buf_size = 0; + + if( !dvdcss->b_file ) + { + CloseHandle( (HANDLE) dvdcss->i_fd ); + } + else +#endif + { + int i_ret = close( dvdcss->i_fd ); + if( i_ret < 0 ) + { + print_error( dvdcss, "Failed to close fd, data loss possible." ); + return i_ret; + } + } + + return 0; +} + +/* Following functions are local */ + +/***************************************************************************** + * Open commands. + *****************************************************************************/ +static int libc_open ( dvdcss_t dvdcss, const char *psz_device ) +{ +#ifdef _WIN32 + int wlen; + dvdcss->i_fd = -1; + wlen = MultiByteToWideChar( CP_UTF8, 0, psz_device, -1, NULL, 0 ); + if( wlen > 0 ) { + wchar_t *wpath = (wchar_t*)malloc( sizeof(wchar_t) * wlen ); + if( wpath ) { + if( MultiByteToWideChar(CP_UTF8, 0, psz_device, -1, wpath, wlen ) ) { + dvdcss->i_fd = _wopen( wpath, O_BINARY ); + } + free( wpath ); + } + } +#else + dvdcss->i_fd = open( psz_device, O_BINARY ); +#endif + + if( dvdcss->i_fd == -1 ) + { + print_error( dvdcss, "failed to open device %s (%s)", + psz_device, strerror(errno) ); + return -1; + } + + return 0; +} + +#if defined( _WIN32 ) +static int win2k_open ( dvdcss_t dvdcss, const char *psz_device ) +{ + char psz_dvd[7] = "\\\\.\\\0:"; + psz_dvd[4] = psz_device[0]; + + /* To work around an M$ bug in IOCTL_DVD_READ_STRUCTURE, we need read + * _and_ write access to the device (so we can make SCSI Pass Through + * Requests). Unfortunately this is only allowed if you have + * administrator privileges so we allow for a fallback method with + * only read access to the device (in this case ioctl_ReadCopyright() + * won't send back the right result). + * (See Microsoft Q241374: Read and Write Access Required for SCSI + * Pass Through Requests) */ + dvdcss->i_fd = (int) + CreateFile( psz_dvd, GENERIC_READ | GENERIC_WRITE, + FILE_SHARE_READ | FILE_SHARE_WRITE, + NULL, OPEN_EXISTING, + FILE_FLAG_RANDOM_ACCESS, NULL ); + + if( (HANDLE) dvdcss->i_fd == INVALID_HANDLE_VALUE ) + dvdcss->i_fd = (int) + CreateFile( psz_dvd, GENERIC_READ, FILE_SHARE_READ, + NULL, OPEN_EXISTING, + FILE_FLAG_RANDOM_ACCESS, NULL ); + + if( (HANDLE) dvdcss->i_fd == INVALID_HANDLE_VALUE ) + { + print_error( dvdcss, "failed to open device %s", psz_device ); + return -1; + } + + dvdcss->i_pos = 0; + + return 0; +} +#endif /* defined( _WIN32 ) */ + +#ifdef __OS2__ +static int os2_open ( dvdcss_t dvdcss, const char *psz_device ) +{ + char psz_dvd[] = "X:"; + HFILE hfile; + ULONG ulAction; + ULONG rc; + + psz_dvd[0] = psz_device[0]; + + rc = DosOpenL( ( PSZ )psz_dvd, &hfile, &ulAction, 0, FILE_NORMAL, + OPEN_ACTION_OPEN_IF_EXISTS | OPEN_ACTION_FAIL_IF_NEW, + OPEN_ACCESS_READONLY | OPEN_SHARE_DENYNONE | OPEN_FLAGS_DASD, + NULL ); + + if( rc ) + { + print_error( dvdcss, "failed to open device %s", psz_device ); + return -1; + } + + setmode( hfile, O_BINARY ); + + dvdcss->i_fd = hfile; + + dvdcss->i_pos = 0; + + return 0; +} +#endif /* __OS2__ */ + +/***************************************************************************** + * Seek commands. + *****************************************************************************/ +static int libc_seek( dvdcss_t dvdcss, int i_blocks ) +{ + off_t i_seek; + + if( dvdcss->i_pos == i_blocks ) + { + /* We are already in position */ + return i_blocks; + } + + i_seek = (off_t)i_blocks * (off_t)DVDCSS_BLOCK_SIZE; + i_seek = lseek( dvdcss->i_fd, i_seek, SEEK_SET ); + + if( i_seek < 0 ) + { + print_error( dvdcss, "seek error" ); + dvdcss->i_pos = -1; + return i_seek; + } + + dvdcss->i_pos = i_seek / DVDCSS_BLOCK_SIZE; + + return dvdcss->i_pos; +} + +static int stream_seek( dvdcss_t dvdcss, int i_blocks ) +{ + off_t i_seek = (off_t) i_blocks * (off_t) DVDCSS_BLOCK_SIZE; + + if( !dvdcss->p_stream_cb->pf_seek ) + return -1; + + if( dvdcss->i_pos == i_blocks ) + { + /* We are already in position */ + return i_blocks; + } + + if( dvdcss->p_stream_cb->pf_seek( dvdcss->p_stream, i_seek ) != 0 ) + { + print_error( dvdcss, "seek error" ); + dvdcss->i_pos = -1; + return -1; + } + + dvdcss->i_pos = i_blocks; + + return dvdcss->i_pos; +} + +#if defined( _WIN32 ) +static int win2k_seek( dvdcss_t dvdcss, int i_blocks ) +{ + LARGE_INTEGER li_seek; + + if( dvdcss->i_pos == i_blocks ) + { + /* We are already in position */ + return i_blocks; + } + + li_seek.QuadPart = (LONGLONG)i_blocks * DVDCSS_BLOCK_SIZE; + + li_seek.LowPart = SetFilePointer( (HANDLE) dvdcss->i_fd, + li_seek.LowPart, + &li_seek.HighPart, FILE_BEGIN ); + if( (li_seek.LowPart == INVALID_SET_FILE_POINTER) + && GetLastError() != NO_ERROR) + { + dvdcss->i_pos = -1; + return -1; + } + + dvdcss->i_pos = li_seek.QuadPart / DVDCSS_BLOCK_SIZE; + + return dvdcss->i_pos; +} +#endif /* defined( _WIN32 ) */ + +/***************************************************************************** + * Read commands. + *****************************************************************************/ +static int libc_read ( dvdcss_t dvdcss, void *p_buffer, int i_blocks ) +{ + off_t i_size, i_ret, i_ret_blocks; + + i_size = (off_t)i_blocks * (off_t)DVDCSS_BLOCK_SIZE; + i_ret = read( dvdcss->i_fd, p_buffer, i_size ); + + if( i_ret < 0 ) + { + print_error( dvdcss, "read error" ); + dvdcss->i_pos = -1; + return i_ret; + } + + i_ret_blocks = i_ret / DVDCSS_BLOCK_SIZE; + + /* Handle partial reads */ + if( i_ret != i_size ) + { + int i_seek, i_set_pos; + + i_set_pos = dvdcss->i_pos + i_ret_blocks; + dvdcss->i_pos = -1; + i_seek = libc_seek( dvdcss, i_set_pos ); + if( i_seek < 0 ) + { + return i_seek; + } + + /* We have to return now so that i_pos isn't clobbered */ + return i_ret_blocks; + } + + dvdcss->i_pos += i_ret_blocks; + return i_ret_blocks; +} + +static int stream_read ( dvdcss_t dvdcss, void *p_buffer, int i_blocks ) +{ + off_t i_size, i_ret, i_ret_blocks; + + i_size = (off_t)i_blocks * (off_t)DVDCSS_BLOCK_SIZE; + + if( !dvdcss->p_stream_cb->pf_read ) + return -1; + + i_ret = dvdcss->p_stream_cb->pf_read( dvdcss->p_stream, p_buffer, i_size ); + + if( i_ret < 0 ) + { + print_error( dvdcss, "read error" ); + dvdcss->i_pos = -1; + return i_ret; + } + + i_ret_blocks = i_ret / DVDCSS_BLOCK_SIZE; + + /* Handle partial reads */ + if( i_ret != i_size ) + { + int i_seek; + + dvdcss->i_pos = -1; + i_seek = stream_seek( dvdcss, i_ret_blocks ); + if( i_seek < 0 ) + { + return i_seek; + } + + /* We have to return now so that i_pos isn't clobbered */ + return i_ret_blocks; + } + + dvdcss->i_pos += i_ret_blocks; + return i_ret_blocks; +} + +#if defined( _WIN32 ) +static int win2k_read ( dvdcss_t dvdcss, void *p_buffer, int i_blocks ) +{ + DWORD i_bytes; + + if( !ReadFile( (HANDLE) dvdcss->i_fd, p_buffer, + i_blocks * DVDCSS_BLOCK_SIZE, + &i_bytes, NULL ) ) + { + dvdcss->i_pos = -1; + return -1; + } + + i_bytes /= DVDCSS_BLOCK_SIZE; + dvdcss->i_pos += i_bytes; + return i_bytes; +} +#endif /* defined( _WIN32 ) */ + +/***************************************************************************** + * Readv commands. + *****************************************************************************/ +static int libc_readv ( dvdcss_t dvdcss, const struct iovec *p_iovec, + int i_blocks ) +{ +#if defined( _WIN32 ) + int i_index, i_len, i_total = 0; + unsigned char *p_base; + int i_bytes; + + for( i_index = i_blocks; + i_index; + i_index--, p_iovec++ ) + { + i_len = p_iovec->iov_len; + p_base = p_iovec->iov_base; + + if( i_len <= 0 ) + { + continue; + } + + i_bytes = read( dvdcss->i_fd, p_base, i_len ); + + if( i_bytes < 0 ) + { + /* One of the reads failed, too bad. + * We won't even bother returning the reads that went OK, + * and as in the POSIX spec the file position is left + * unspecified after a failure */ + dvdcss->i_pos = -1; + return -1; + } + + i_total += i_bytes; + i_total /= DVDCSS_BLOCK_SIZE; + + if( i_bytes != i_len ) + { + /* We reached the end of the file or a signal interrupted + * the read. Return a partial read. */ + int i_seek; + + dvdcss->i_pos = -1; + i_seek = libc_seek( dvdcss, i_total ); + if( i_seek < 0 ) + { + return i_seek; + } + + /* We have to return now so that i_pos isn't clobbered */ + return i_total; + } + } + + dvdcss->i_pos += i_total; + return i_total; +#else + int i_read = readv( dvdcss->i_fd, p_iovec, i_blocks ); + + if( i_read < 0 ) + { + dvdcss->i_pos = -1; + return i_read; + } + + i_read /= DVDCSS_BLOCK_SIZE; + dvdcss->i_pos += i_read; + return i_read; +#endif +} + +/***************************************************************************** + * stream_readv: vectored read + *****************************************************************************/ +static int stream_readv ( dvdcss_t dvdcss, const struct iovec *p_iovec, + int i_blocks ) +{ + int i_read; + + if( !dvdcss->p_stream_cb->pf_readv ) + return -1; + + i_read = dvdcss->p_stream_cb->pf_readv( dvdcss->p_stream, p_iovec, + i_blocks ); + + if( i_read < 0 ) + { + dvdcss->i_pos = -1; + return i_read; + } + + dvdcss->i_pos += i_read / DVDCSS_BLOCK_SIZE; + return i_read / DVDCSS_BLOCK_SIZE; +} + +#if defined( _WIN32 ) +/***************************************************************************** + * win2k_readv: vectored read using ReadFile for Win2K + *****************************************************************************/ +static int win2k_readv ( dvdcss_t dvdcss, const struct iovec *p_iovec, + int i_blocks ) +{ + int i_index; + int i_blocks_read, i_blocks_total = 0; + DWORD i_bytes; + + /* Check the size of the readv temp buffer, just in case we need to + * realloc something bigger */ + if( dvdcss->i_readv_buf_size < i_blocks * DVDCSS_BLOCK_SIZE ) + { + dvdcss->i_readv_buf_size = i_blocks * DVDCSS_BLOCK_SIZE; + + free( dvdcss->p_readv_buffer ); + + /* Allocate a buffer which will be used as a temporary storage + * for readv */ + dvdcss->p_readv_buffer = malloc( dvdcss->i_readv_buf_size ); + if( !dvdcss->p_readv_buffer ) + { + print_error( dvdcss, "scatter input (readv) failed" ); + dvdcss->i_pos = -1; + return -1; + } + } + + for( i_index = i_blocks; i_index; i_index-- ) + { + i_blocks_total += p_iovec[i_index-1].iov_len; + } + + if( i_blocks_total <= 0 ) return 0; + + if( !ReadFile( (HANDLE)dvdcss->i_fd, dvdcss->p_readv_buffer, + i_blocks_total, &i_bytes, NULL ) ) + { + /* The read failed... too bad. + * As in the POSIX spec the file position is left + * unspecified after a failure */ + dvdcss->i_pos = -1; + return -1; + } + i_blocks_read = i_bytes / DVDCSS_BLOCK_SIZE; + + /* We just have to copy the content of the temp buffer into the iovecs */ + for( i_index = 0, i_blocks_total = i_blocks_read; + i_blocks_total > 0; + i_index++ ) + { + memcpy( p_iovec[i_index].iov_base, + dvdcss->p_readv_buffer + (i_blocks_read - i_blocks_total) + * DVDCSS_BLOCK_SIZE, + p_iovec[i_index].iov_len ); + /* if we read less blocks than asked, we'll just end up copying + * garbage, this isn't an issue as we return the number of + * blocks actually read */ + i_blocks_total -= ( p_iovec[i_index].iov_len / DVDCSS_BLOCK_SIZE ); + } + + dvdcss->i_pos += i_blocks_read; + return i_blocks_read; +} +#endif /* defined( _WIN32 ) */ diff --git a/src/device.h b/src/device.h new file mode 100644 index 0000000..e098ec2 --- /dev/null +++ b/src/device.h @@ -0,0 +1,56 @@ +/***************************************************************************** + * device.h: DVD device access + ***************************************************************************** + * Copyright (C) 1998-2002 VideoLAN + * + * Authors: Stéphane Borel + * Sam Hocevar + * Håkan Hjort + * + * libdvdcss 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. + * + * libdvdcss 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 libdvdcss; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + *****************************************************************************/ + +#ifndef DVDCSS_DEVICE_H +#define DVDCSS_DEVICE_H + +#include "config.h" + +/***************************************************************************** + * iovec structure: vectored data entry + *****************************************************************************/ +#ifndef HAVE_SYS_UIO_H +# include /* read() */ +struct iovec +{ + void *iov_base; /* Pointer to data. */ + size_t iov_len; /* Length of data. */ +}; +#else +# include +# include /* struct iovec */ +#endif + +#include "dvdcss/dvdcss.h" + + +/***************************************************************************** + * Device reading prototypes + *****************************************************************************/ +int dvdcss_use_ioctls ( dvdcss_t ); +void dvdcss_check_device ( dvdcss_t ); +int dvdcss_open_device ( dvdcss_t ); +int dvdcss_close_device ( dvdcss_t ); + +#endif /* DVDCSS_DEVICE_H */ diff --git a/src/dvdcss/dvdcss.h b/src/dvdcss/dvdcss.h new file mode 100644 index 0000000..c2ae786 --- /dev/null +++ b/src/dvdcss/dvdcss.h @@ -0,0 +1,113 @@ +/** + * \file dvdcss.h + * \author Stéphane Borel + * \author Sam Hocevar + * + * \brief The \e libdvdcss public header. + * + * Public types and functions that describe the API of the \e libdvdcss library. + */ + +/* + * Copyright (C) 1998-2008 VideoLAN + * + * libdvdcss 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. + * + * libdvdcss 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 libdvdcss; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#ifndef DVDCSS_DVDCSS_H +#ifndef _DOXYGEN_SKIP_ME +#define DVDCSS_DVDCSS_H 1 +#endif + +#include + +#include "version.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/** Library instance handle, to be used for each library call. */ +typedef struct dvdcss_s* dvdcss_t; + +/** Set of callbacks to access DVDs in custom ways. */ +typedef struct dvdcss_stream_cb +{ + /** custom seek callback */ + int ( *pf_seek ) ( void *p_stream, uint64_t i_pos); + /** custom read callback */ + int ( *pf_read ) ( void *p_stream, void *buffer, int i_read); + /** custom vectored read callback */ + int ( *pf_readv ) ( void *p_stream, const void *p_iovec, int i_blocks); +} dvdcss_stream_cb; + + +/** The block size of a DVD. */ +#define DVDCSS_BLOCK_SIZE 2048 + +/** The default flag to be used by \e libdvdcss functions. */ +#define DVDCSS_NOFLAGS 0 + +/** Flag to ask dvdcss_read() to decrypt the data it reads. */ +#define DVDCSS_READ_DECRYPT (1 << 0) + +/** Flag to tell dvdcss_seek() it is seeking in MPEG data. */ +#define DVDCSS_SEEK_MPEG (1 << 0) + +/** Flag to ask dvdcss_seek() to check the current title key. */ +#define DVDCSS_SEEK_KEY (1 << 1) + + +/** Macro for setting symbol storage-class or visibility. + * Define LIBDVDCSS_IMPORTS before importing this header to get the + * correct DLL storage-class when using \e libdvdcss from MSVC. */ +#if defined(LIBDVDCSS_EXPORTS) +#define LIBDVDCSS_EXPORT __declspec(dllexport) extern +#elif defined(LIBDVDCSS_IMPORTS) +#define LIBDVDCSS_EXPORT __declspec(dllimport) extern +#elif defined(SUPPORT_ATTRIBUTE_VISIBILITY_DEFAULT) +#define LIBDVDCSS_EXPORT __attribute__((visibility("default"))) extern +#else +#define LIBDVDCSS_EXPORT extern +#endif + + +/* + * Exported prototypes. + */ +LIBDVDCSS_EXPORT dvdcss_t dvdcss_open ( const char *psz_target ); +LIBDVDCSS_EXPORT dvdcss_t dvdcss_open_stream( void *p_stream, + dvdcss_stream_cb *p_stream_cb ); +LIBDVDCSS_EXPORT int dvdcss_close ( dvdcss_t ); +LIBDVDCSS_EXPORT int dvdcss_seek ( dvdcss_t, + int i_blocks, + int i_flags ); +LIBDVDCSS_EXPORT int dvdcss_read ( dvdcss_t, + void *p_buffer, + int i_blocks, + int i_flags ); +LIBDVDCSS_EXPORT int dvdcss_readv ( dvdcss_t, + void *p_iovec, + int i_blocks, + int i_flags ); +LIBDVDCSS_EXPORT const char *dvdcss_error ( const dvdcss_t ); + +LIBDVDCSS_EXPORT int dvdcss_is_scrambled ( dvdcss_t ); + +#ifdef __cplusplus +} +#endif + +#endif /* DVDCSS_DVDCSS_H */ diff --git a/src/dvdcss/version.h b/src/dvdcss/version.h new file mode 100644 index 0000000..cc4042a --- /dev/null +++ b/src/dvdcss/version.h @@ -0,0 +1,37 @@ +/* + * This file is part of libdvdcss + * Copyright (C) 2015 VideoLAN + * + * This file is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This file 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library. If not, see + * . + */ + +#ifndef DVDCSS_VERSION_H_ +#define DVDCSS_VERSION_H_ + +#define DVDCSS_VERSION_CODE(major, minor, micro) \ + (((major) * 10000) + \ + ((minor) * 100) + \ + ((micro) * 1)) + +#define DVDCSS_VERSION_MAJOR 1 +#define DVDCSS_VERSION_MINOR 4 +#define DVDCSS_VERSION_MICRO 3 + +#define DVDCSS_VERSION_STRING "1.4.3" + +#define DVDCSS_VERSION \ + DVDCSS_VERSION_CODE(DVDCSS_VERSION_MAJOR, DVDCSS_VERSION_MINOR, DVDCSS_VERSION_MICRO) + +#endif /* DVDCSS_VERSION_H_ */ diff --git a/src/dvdcss/version.h.in b/src/dvdcss/version.h.in new file mode 100644 index 0000000..3210e22 --- /dev/null +++ b/src/dvdcss/version.h.in @@ -0,0 +1,37 @@ +/* + * This file is part of libdvdcss + * Copyright (C) 2015 VideoLAN + * + * This file is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This file 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library. If not, see + * . + */ + +#ifndef DVDCSS_VERSION_H_ +#define DVDCSS_VERSION_H_ + +#define DVDCSS_VERSION_CODE(major, minor, micro) \ + (((major) * 10000) + \ + ((minor) * 100) + \ + ((micro) * 1)) + +#define DVDCSS_VERSION_MAJOR @DVDCSS_VERSION_MAJOR@ +#define DVDCSS_VERSION_MINOR @DVDCSS_VERSION_MINOR@ +#define DVDCSS_VERSION_MICRO @DVDCSS_VERSION_MICRO@ + +#define DVDCSS_VERSION_STRING "@DVDCSS_VERSION_MAJOR@.@DVDCSS_VERSION_MINOR@.@DVDCSS_VERSION_MICRO@" + +#define DVDCSS_VERSION \ + DVDCSS_VERSION_CODE(DVDCSS_VERSION_MAJOR, DVDCSS_VERSION_MINOR, DVDCSS_VERSION_MICRO) + +#endif /* DVDCSS_VERSION_H_ */ diff --git a/src/error.c b/src/error.c new file mode 100644 index 0000000..4c30d2f --- /dev/null +++ b/src/error.c @@ -0,0 +1,66 @@ +/***************************************************************************** + * error.c: error management functions + ***************************************************************************** + * Copyright (C) 1998-2002 VideoLAN + * + * Author: Sam Hocevar + * + * libdvdcss 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. + * + * libdvdcss 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 libdvdcss; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + *****************************************************************************/ + +#include +#include + +#include "libdvdcss.h" + +static void print_message( const char *prefix, const char *psz_string, + va_list args ) +{ + fprintf( stderr, "libdvdcss %s: ", prefix ); + vfprintf( stderr, psz_string, args ); + fprintf( stderr, "\n" ); +} + +/***************************************************************************** + * Error messages + *****************************************************************************/ +void print_error( dvdcss_t dvdcss, const char *psz_string, ... ) +{ + if( dvdcss->b_errors ) + { + va_list args; + + va_start( args, psz_string ); + print_message("error", psz_string, args); + va_end( args ); + } + + dvdcss->psz_error = psz_string; +} + +/***************************************************************************** + * Debug messages + *****************************************************************************/ +void print_debug( const dvdcss_t dvdcss, const char *psz_string, ... ) +{ + if( dvdcss->b_debug ) + { + va_list args; + + va_start( args, psz_string ); + print_message("debug", psz_string, args ); + va_end( args ); + } +} diff --git a/src/ioctl.c b/src/ioctl.c new file mode 100644 index 0000000..07bcb0d --- /dev/null +++ b/src/ioctl.c @@ -0,0 +1,1563 @@ +/***************************************************************************** + * ioctl.c: DVD ioctl replacement function + ***************************************************************************** + * Copyright (C) 1999-2001 VideoLAN + * + * Authors: Markus Kuespert + * Sam Hocevar + * Jon Lech Johansen + * Håkan Hjort + * Eugenio Jarosiewicz + * David Siebörger + * Alex Strelnikov + * Gildas Bazin + * + * libdvdcss 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. + * + * libdvdcss 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 libdvdcss; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + *****************************************************************************/ + +/***************************************************************************** + * Preamble + *****************************************************************************/ +#include "config.h" + +#include + +#include /* memcpy(), memset() */ +#include + +#if defined( _WIN32 ) +# include +# include +#elif defined ( __OS2__ ) +# define INCL_DOSFILEMGR +# define INCL_DOSDEVICES +# define INCL_DOSDEVIOCTL +# define INCL_DOSERRORS +# include +# include +#else +# include +# include +#endif + +#ifdef DVD_STRUCT_IN_SYS_CDIO_H +# include +#endif +#ifdef DVD_STRUCT_IN_SYS_DVDIO_H +# include +#endif +#ifdef DVD_STRUCT_IN_LINUX_CDROM_H +# include +#endif +#ifdef DVD_STRUCT_IN_DVD_H +# include +#endif +#ifdef __HAIKU__ +# include +# include +#endif +#ifdef SOLARIS_USCSI +# include +# include +# include +# include +# include +#endif +#ifdef DARWIN_DVD_IOCTL +# include +#endif +#ifdef __QNXNTO__ +# include +# include +#endif + +#include "dvdcss/dvdcss.h" +#include "common.h" +#include "css.h" +#include "ioctl.h" + +#define DVD_CHALLENGE_SIZE 10 + +/***************************************************************************** + * Local prototypes, OS-specific + *****************************************************************************/ +#if defined( __HAIKU__ ) +static void BeInitRDC ( raw_device_command *, int ); +#elif defined( SOLARIS_USCSI ) +static void SolarisInitUSCSI( struct uscsi_cmd *p_sc, int i_type ); +static int SolarisSendUSCSI( int fd, struct uscsi_cmd *p_sc ); +#elif defined( _WIN32 ) +static void WinInitSPTD ( SCSI_PASS_THROUGH_DIRECT *, int ); +#elif defined( __QNXNTO__ ) +static void QNXInitCPT ( CAM_PASS_THRU *, int ); +#elif defined( __OS2__ ) +static void OS2InitSDC( struct OS2_ExecSCSICmd *, int ); +#endif + +/***************************************************************************** + * ioctl_ReadCopyright: check whether the disc is encrypted or not + *****************************************************************************/ +int ioctl_ReadCopyright( int i_fd, int i_layer, int *pi_copyright ) +{ + int i_ret; + +#if defined( HAVE_LINUX_DVD_STRUCT ) + dvd_struct dvd = { 0 }; + + dvd.type = DVD_STRUCT_COPYRIGHT; + dvd.copyright.layer_num = i_layer; + + i_ret = ioctl( i_fd, DVD_READ_STRUCT, &dvd ); + + *pi_copyright = dvd.copyright.cpst; + +#elif defined( HAVE_BSD_DVD_STRUCT ) + struct dvd_struct dvd = { 0 }; + + dvd.format = DVD_STRUCT_COPYRIGHT; + dvd.layer_num = i_layer; + + i_ret = ioctl( i_fd, DVDIOCREADSTRUCTURE, &dvd ); + + *pi_copyright = dvd.cpst; + +#elif defined( __HAIKU__ ) + INIT_RDC( GPCMD_READ_DVD_STRUCTURE, 8 ); + + rdc.command[ 6 ] = i_layer; + rdc.command[ 7 ] = DVD_STRUCT_COPYRIGHT; + + i_ret = ioctl( i_fd, B_RAW_DEVICE_COMMAND, &rdc, sizeof(rdc) ); + + *pi_copyright = p_buffer[ 4 ]; + +#elif defined( SOLARIS_USCSI ) + INIT_USCSI( GPCMD_READ_DVD_STRUCTURE, 8 ); + + rs_cdb.cdb_opaque[ 6 ] = i_layer; + rs_cdb.cdb_opaque[ 7 ] = DVD_STRUCT_COPYRIGHT; + + i_ret = SolarisSendUSCSI(i_fd, &sc); + + if( i_ret < 0 || sc.uscsi_status ) { + i_ret = -1; + } + + *pi_copyright = p_buffer[ 4 ]; + /* s->copyright.rmi = p_buffer[ 5 ]; */ + +#elif defined( DARWIN_DVD_IOCTL ) + INIT_DVDIOCTL( dk_dvd_read_structure_t, DVDCopyrightInfo, + kDVDStructureFormatCopyrightInfo ); + + dvd.layer = i_layer; + + i_ret = ioctl( i_fd, DKIOCDVDREADSTRUCTURE, &dvd ); + + *pi_copyright = dvdbs.copyrightProtectionSystemType; + +#elif defined( _WIN32 ) + DWORD tmp; + SCSI_PASS_THROUGH_DIRECT sptd = { 0 }; + uint8_t p_buffer[8]; + sptd.Length = sizeof( SCSI_PASS_THROUGH_DIRECT ); + sptd.DataBuffer = p_buffer; + sptd.DataTransferLength = sizeof( p_buffer ); + WinInitSPTD( &sptd, GPCMD_READ_DVD_STRUCTURE ); + + /* When using IOCTL_DVD_READ_STRUCTURE and + DVD_COPYRIGHT_DESCRIPTOR, CopyrightProtectionType + seems to be always 6 ??? + To work around this MS bug we try to send a raw SCSI command + instead (if we've got enough privileges to do so). */ + + sptd.Cdb[ 6 ] = i_layer; + sptd.Cdb[ 7 ] = DVD_STRUCT_COPYRIGHT; + + i_ret = DeviceIoControl( (HANDLE) i_fd, IOCTL_SCSI_PASS_THROUGH_DIRECT, + &sptd, sizeof( SCSI_PASS_THROUGH_DIRECT ), + &sptd, sizeof( SCSI_PASS_THROUGH_DIRECT ), + &tmp, NULL ) ? 0 : -1; + + if( i_ret == 0 ) + { + *pi_copyright = p_buffer[ 4 ]; + } + +#elif defined( __QNXNTO__ ) + + INIT_CPT( GPCMD_READ_DVD_STRUCTURE, 8 ); + + p_cpt->cam_cdb[ 6 ] = i_layer; + p_cpt->cam_cdb[ 7 ] = DVD_STRUCT_COPYRIGHT; + + i_ret = devctl(i_fd, DCMD_CAM_PASS_THRU, p_cpt, structSize, NULL); + + *pi_copyright = p_buffer[4]; + +#elif defined( __OS2__ ) + INIT_SSC( GPCMD_READ_DVD_STRUCTURE, 8 ); + + sdc.command[ 6 ] = i_layer; + sdc.command[ 7 ] = DVD_STRUCT_COPYRIGHT; + + i_ret = DosDevIOCtl(i_fd, IOCTL_CDROMDISK, CDROMDISK_EXECMD, + &sdc, sizeof(sdc), &ulParamLen, + p_buffer, sizeof(p_buffer), &ulDataLen); + + *pi_copyright = p_buffer[ 4 ]; + +#else +# error "DVD ioctls are unavailable on this system" + +#endif + return i_ret; +} + +/***************************************************************************** + * ioctl_ReadDiscKey: get the disc key + *****************************************************************************/ +int ioctl_ReadDiscKey( int i_fd, const int *pi_agid, uint8_t *p_key ) +{ + int i_ret; + +#if defined( HAVE_LINUX_DVD_STRUCT ) + dvd_struct dvd = { 0 }; + + dvd.type = DVD_STRUCT_DISCKEY; + dvd.disckey.agid = *pi_agid; + + i_ret = ioctl( i_fd, DVD_READ_STRUCT, &dvd ); + + if( i_ret < 0 ) + { + return i_ret; + } + + memcpy( p_key, dvd.disckey.value, DVD_DISCKEY_SIZE ); + +#elif defined( HAVE_BSD_DVD_STRUCT ) + struct dvd_struct dvd = { 0 }; + + dvd.format = DVD_STRUCT_DISCKEY; + dvd.agid = *pi_agid; + + i_ret = ioctl( i_fd, DVDIOCREADSTRUCTURE, &dvd ); + + if( i_ret < 0 ) + { + return i_ret; + } + + memcpy( p_key, dvd.data, DVD_DISCKEY_SIZE ); + +#elif defined( __HAIKU__ ) + INIT_RDC( GPCMD_READ_DVD_STRUCTURE, DVD_DISCKEY_SIZE + 4 ); + + rdc.command[ 7 ] = DVD_STRUCT_DISCKEY; + rdc.command[ 10 ] = *pi_agid << 6; + + i_ret = ioctl( i_fd, B_RAW_DEVICE_COMMAND, &rdc, sizeof(rdc) ); + + if( i_ret < 0 ) + { + return i_ret; + } + + memcpy( p_key, p_buffer + 4, DVD_DISCKEY_SIZE ); + +#elif defined( SOLARIS_USCSI ) + INIT_USCSI( GPCMD_READ_DVD_STRUCTURE, DVD_DISCKEY_SIZE + 4 ); + + rs_cdb.cdb_opaque[ 7 ] = DVD_STRUCT_DISCKEY; + rs_cdb.cdb_opaque[ 10 ] = *pi_agid << 6; + + i_ret = SolarisSendUSCSI( i_fd, &sc ); + + if( i_ret < 0 || sc.uscsi_status ) + { + i_ret = -1; + return i_ret; + } + + memcpy( p_key, p_buffer + 4, DVD_DISCKEY_SIZE ); + +#elif defined( DARWIN_DVD_IOCTL ) + INIT_DVDIOCTL( dk_dvd_read_structure_t, DVDDiscKeyInfo, + kDVDStructureFormatDiscKeyInfo ); + + dvd.grantID = *pi_agid; + + i_ret = ioctl( i_fd, DKIOCDVDREADSTRUCTURE, &dvd ); + + memcpy( p_key, dvdbs.discKeyStructures, DVD_DISCKEY_SIZE ); + +#elif defined( _WIN32 ) + DWORD tmp; + uint8_t buffer[DVD_DISK_KEY_LENGTH] = { 0 }; + PDVD_COPY_PROTECT_KEY key = (PDVD_COPY_PROTECT_KEY) &buffer; + + key->KeyLength = DVD_DISK_KEY_LENGTH; + key->SessionId = *pi_agid; + key->KeyType = DvdDiskKey; + key->KeyFlags = 0; + + i_ret = DeviceIoControl( (HANDLE) i_fd, IOCTL_DVD_READ_KEY, key, + key->KeyLength, key, key->KeyLength, &tmp, NULL ) ? 0 : -1; + + if( i_ret < 0 ) + { + return i_ret; + } + + memcpy( p_key, key->KeyData, DVD_DISCKEY_SIZE ); + +#elif defined( __QNXNTO__ ) + + INIT_CPT( GPCMD_READ_DVD_STRUCTURE, DVD_DISCKEY_SIZE + 4 ); + + p_cpt->cam_cdb[ 7 ] = DVD_STRUCT_DISCKEY; + p_cpt->cam_cdb[ 10 ] = *pi_agid << 6; + + i_ret = devctl(i_fd, DCMD_CAM_PASS_THRU, p_cpt, structSize, NULL); + + memcpy( p_key, p_buffer + 4, DVD_DISCKEY_SIZE ); + +#elif defined ( __OS2__ ) + INIT_SSC( GPCMD_READ_DVD_STRUCTURE, DVD_DISCKEY_SIZE + 4 ); + + sdc.command[ 7 ] = DVD_STRUCT_DISCKEY; + sdc.command[ 10 ] = *pi_agid << 6; + + i_ret = DosDevIOCtl(i_fd, IOCTL_CDROMDISK, CDROMDISK_EXECMD, + &sdc, sizeof(sdc), &ulParamLen, + p_buffer, sizeof(p_buffer), &ulDataLen); + + if( i_ret < 0 ) + { + return i_ret; + } + + memcpy( p_key, p_buffer + 4, DVD_DISCKEY_SIZE ); + +#else +# error "DVD ioctls are unavailable on this system" + +#endif + return i_ret; +} + +/***************************************************************************** + * ioctl_ReadTitleKey: get the title key + *****************************************************************************/ +int ioctl_ReadTitleKey( int i_fd, const int *pi_agid, int i_pos, uint8_t *p_key ) +{ + int i_ret; + +#if defined( HAVE_LINUX_DVD_STRUCT ) + dvd_authinfo auth_info = { 0 }; + + auth_info.type = DVD_LU_SEND_TITLE_KEY; + auth_info.lstk.agid = *pi_agid; + auth_info.lstk.lba = i_pos; + + i_ret = ioctl( i_fd, DVD_AUTH, &auth_info ); + + memcpy( p_key, auth_info.lstk.title_key, DVD_KEY_SIZE ); + +#elif defined( HAVE_BSD_DVD_STRUCT ) + struct dvd_authinfo auth_info = { 0 }; + + auth_info.format = DVD_REPORT_TITLE_KEY; + auth_info.agid = *pi_agid; + auth_info.lba = i_pos; + + i_ret = ioctl( i_fd, DVDIOCREPORTKEY, &auth_info ); + + memcpy( p_key, auth_info.keychal, DVD_KEY_SIZE ); + +#elif defined( __HAIKU__ ) + INIT_RDC( GPCMD_REPORT_KEY, 12 ); + + rdc.command[ 2 ] = ( i_pos >> 24 ) & 0xff; + rdc.command[ 3 ] = ( i_pos >> 16 ) & 0xff; + rdc.command[ 4 ] = ( i_pos >> 8 ) & 0xff; + rdc.command[ 5 ] = ( i_pos ) & 0xff; + rdc.command[ 10 ] = DVD_REPORT_TITLE_KEY | (*pi_agid << 6); + + i_ret = ioctl( i_fd, B_RAW_DEVICE_COMMAND, &rdc, sizeof(rdc) ); + + memcpy( p_key, p_buffer + 5, DVD_KEY_SIZE ); + +#elif defined( SOLARIS_USCSI ) + INIT_USCSI( GPCMD_REPORT_KEY, 12 ); + + rs_cdb.cdb_opaque[ 2 ] = ( i_pos >> 24 ) & 0xff; + rs_cdb.cdb_opaque[ 3 ] = ( i_pos >> 16 ) & 0xff; + rs_cdb.cdb_opaque[ 4 ] = ( i_pos >> 8 ) & 0xff; + rs_cdb.cdb_opaque[ 5 ] = ( i_pos ) & 0xff; + rs_cdb.cdb_opaque[ 10 ] = DVD_REPORT_TITLE_KEY | (*pi_agid << 6); + + i_ret = SolarisSendUSCSI( i_fd, &sc ); + + if( i_ret < 0 || sc.uscsi_status ) + { + i_ret = -1; + } + + /* Do we want to return the cp_sec flag perhaps? */ + /* a->lstk.cpm = (buf[ 4 ] >> 7) & 1; */ + /* a->lstk.cp_sec = (buf[ 4 ] >> 6) & 1; */ + /* a->lstk.cgms = (buf[ 4 ] >> 4) & 3; */ + + memcpy( p_key, p_buffer + 5, DVD_KEY_SIZE ); + +#elif defined( DARWIN_DVD_IOCTL ) + INIT_DVDIOCTL( dk_dvd_report_key_t, DVDTitleKeyInfo, + kDVDKeyFormatTitleKey ); + + dvd.address = i_pos; + dvd.grantID = *pi_agid; + dvd.keyClass = kDVDKeyClassCSS_CPPM_CPRM; + + i_ret = ioctl( i_fd, DKIOCDVDREPORTKEY, &dvd ); + + memcpy( p_key, dvdbs.titleKeyValue, DVD_KEY_SIZE ); + +#elif defined( _WIN32 ) + DWORD tmp; + uint8_t buffer[DVD_TITLE_KEY_LENGTH] = { 0 }; + PDVD_COPY_PROTECT_KEY key = (PDVD_COPY_PROTECT_KEY) &buffer; + + key->KeyLength = DVD_TITLE_KEY_LENGTH; + key->SessionId = *pi_agid; + key->KeyType = DvdTitleKey; + key->KeyFlags = 0; + key->Parameters.TitleOffset.QuadPart = (LONGLONG) i_pos * + DVDCSS_BLOCK_SIZE; + + i_ret = DeviceIoControl( (HANDLE) i_fd, IOCTL_DVD_READ_KEY, key, + key->KeyLength, key, key->KeyLength, &tmp, NULL ) ? 0 : -1; + + memcpy( p_key, key->KeyData, DVD_KEY_SIZE ); + +#elif defined( __QNXNTO__ ) + + INIT_CPT( GPCMD_REPORT_KEY, 12 ); + + p_cpt->cam_cdb[ 2 ] = ( i_pos >> 24 ) & 0xff; + p_cpt->cam_cdb[ 3 ] = ( i_pos >> 16 ) & 0xff; + p_cpt->cam_cdb[ 4 ] = ( i_pos >> 8 ) & 0xff; + p_cpt->cam_cdb[ 5 ] = ( i_pos ) & 0xff; + p_cpt->cam_cdb[ 10 ] = DVD_REPORT_TITLE_KEY | (*pi_agid << 6); + + i_ret = devctl(i_fd, DCMD_CAM_PASS_THRU, p_cpt, structSize, NULL); + + memcpy( p_key, p_buffer + 5, DVD_KEY_SIZE ); + +#elif defined( __OS2__ ) + INIT_SSC( GPCMD_REPORT_KEY, 12 ); + + sdc.command[ 2 ] = ( i_pos >> 24 ) & 0xff; + sdc.command[ 3 ] = ( i_pos >> 16 ) & 0xff; + sdc.command[ 4 ] = ( i_pos >> 8 ) & 0xff; + sdc.command[ 5 ] = ( i_pos ) & 0xff; + sdc.command[ 10 ] = DVD_REPORT_TITLE_KEY | (*pi_agid << 6); + + i_ret = DosDevIOCtl(i_fd, IOCTL_CDROMDISK, CDROMDISK_EXECMD, + &sdc, sizeof(sdc), &ulParamLen, + p_buffer, sizeof(p_buffer), &ulDataLen); + + memcpy( p_key, p_buffer + 5, DVD_KEY_SIZE ); + +#else +# error "DVD ioctls are unavailable on this system" + +#endif + + return i_ret; +} + + +/***************************************************************************** + * ioctl_ReportAgid: get AGID from the drive + *****************************************************************************/ +int ioctl_ReportAgid( int i_fd, int *pi_agid ) +{ + int i_ret; + +#if defined( HAVE_LINUX_DVD_STRUCT ) + dvd_authinfo auth_info = { 0 }; + + auth_info.type = DVD_LU_SEND_AGID; + auth_info.lsa.agid = *pi_agid; + + i_ret = ioctl( i_fd, DVD_AUTH, &auth_info ); + + *pi_agid = auth_info.lsa.agid; + +#elif defined( HAVE_BSD_DVD_STRUCT ) + struct dvd_authinfo auth_info = { 0 }; + + auth_info.format = DVD_REPORT_AGID; + auth_info.agid = *pi_agid; + + i_ret = ioctl( i_fd, DVDIOCREPORTKEY, &auth_info ); + + *pi_agid = auth_info.agid; + +#elif defined( __HAIKU__ ) + INIT_RDC( GPCMD_REPORT_KEY, 8 ); + + rdc.command[ 10 ] = DVD_REPORT_AGID | (*pi_agid << 6); + + i_ret = ioctl( i_fd, B_RAW_DEVICE_COMMAND, &rdc, sizeof(rdc) ); + + *pi_agid = p_buffer[ 7 ] >> 6; + +#elif defined( SOLARIS_USCSI ) + INIT_USCSI( GPCMD_REPORT_KEY, 8 ); + + rs_cdb.cdb_opaque[ 10 ] = DVD_REPORT_AGID | (*pi_agid << 6); + + i_ret = SolarisSendUSCSI( i_fd, &sc ); + + if( i_ret < 0 || sc.uscsi_status ) + { + i_ret = -1; + } + + *pi_agid = p_buffer[ 7 ] >> 6; + +#elif defined( DARWIN_DVD_IOCTL ) + INIT_DVDIOCTL( dk_dvd_report_key_t, DVDAuthenticationGrantIDInfo, + kDVDKeyFormatAGID_CSS ); + + dvd.grantID = *pi_agid; + dvd.keyClass = kDVDKeyClassCSS_CPPM_CPRM; + + i_ret = ioctl( i_fd, DKIOCDVDREPORTKEY, &dvd ); + + *pi_agid = dvdbs.grantID; + +#elif defined( _WIN32 ) + DWORD tmp = 0; + + i_ret = DeviceIoControl( (HANDLE) i_fd, IOCTL_DVD_START_SESSION, &tmp, 4, + pi_agid, sizeof( *pi_agid ), &tmp, NULL ) ? 0 : -1; + +#elif defined( __QNXNTO__ ) + + INIT_CPT( GPCMD_REPORT_KEY, 8 ); + + p_cpt->cam_cdb[ 10 ] = DVD_REPORT_AGID | (*pi_agid << 6); + + i_ret = devctl(i_fd, DCMD_CAM_PASS_THRU, p_cpt, structSize, NULL); + + *pi_agid = p_buffer[ 7 ] >> 6; + +#elif defined( __OS2__ ) + INIT_SSC( GPCMD_REPORT_KEY, 8 ); + + sdc.command[ 10 ] = DVD_REPORT_AGID | (*pi_agid << 6); + + i_ret = DosDevIOCtl(i_fd, IOCTL_CDROMDISK, CDROMDISK_EXECMD, + &sdc, sizeof(sdc), &ulParamLen, + p_buffer, sizeof(p_buffer), &ulDataLen); + + *pi_agid = p_buffer[ 7 ] >> 6; + +#else +# error "DVD ioctls are unavailable on this system" + +#endif + return i_ret; +} + +/***************************************************************************** + * ioctl_ReportChallenge: get challenge from the drive + *****************************************************************************/ +int ioctl_ReportChallenge( int i_fd, const int *pi_agid, uint8_t *p_challenge ) +{ + int i_ret; + +#if defined( HAVE_LINUX_DVD_STRUCT ) + dvd_authinfo auth_info = { 0 }; + + auth_info.type = DVD_LU_SEND_CHALLENGE; + auth_info.lsc.agid = *pi_agid; + + i_ret = ioctl( i_fd, DVD_AUTH, &auth_info ); + + memcpy( p_challenge, auth_info.lsc.chal, DVD_CHALLENGE_SIZE ); + +#elif defined( HAVE_BSD_DVD_STRUCT ) + struct dvd_authinfo auth_info = { 0 }; + + auth_info.format = DVD_REPORT_CHALLENGE; + auth_info.agid = *pi_agid; + + i_ret = ioctl( i_fd, DVDIOCREPORTKEY, &auth_info ); + + memcpy( p_challenge, auth_info.keychal, DVD_CHALLENGE_SIZE ); + +#elif defined( __HAIKU__ ) + INIT_RDC( GPCMD_REPORT_KEY, 16 ); + + rdc.command[ 10 ] = DVD_REPORT_CHALLENGE | (*pi_agid << 6); + + i_ret = ioctl( i_fd, B_RAW_DEVICE_COMMAND, &rdc, sizeof(rdc) ); + + memcpy( p_challenge, p_buffer + 4, DVD_CHALLENGE_SIZE ); + +#elif defined( SOLARIS_USCSI ) + INIT_USCSI( GPCMD_REPORT_KEY, 16 ); + + rs_cdb.cdb_opaque[ 10 ] = DVD_REPORT_CHALLENGE | (*pi_agid << 6); + + i_ret = SolarisSendUSCSI( i_fd, &sc ); + + if( i_ret < 0 || sc.uscsi_status ) + { + i_ret = -1; + } + + memcpy( p_challenge, p_buffer + 4, DVD_CHALLENGE_SIZE ); + +#elif defined( DARWIN_DVD_IOCTL ) + INIT_DVDIOCTL( dk_dvd_report_key_t, DVDChallengeKeyInfo, + kDVDKeyFormatChallengeKey ); + + dvd.grantID = *pi_agid; + + i_ret = ioctl( i_fd, DKIOCDVDREPORTKEY, &dvd ); + + memcpy( p_challenge, dvdbs.challengeKeyValue, DVD_CHALLENGE_SIZE ); + +#elif defined( _WIN32 ) + DWORD tmp; + uint8_t buffer[DVD_CHALLENGE_KEY_LENGTH] = { 0 }; + PDVD_COPY_PROTECT_KEY key = (PDVD_COPY_PROTECT_KEY) &buffer; + + key->KeyLength = DVD_CHALLENGE_KEY_LENGTH; + key->SessionId = *pi_agid; + key->KeyType = DvdChallengeKey; + key->KeyFlags = 0; + + i_ret = DeviceIoControl( (HANDLE) i_fd, IOCTL_DVD_READ_KEY, key, + key->KeyLength, key, key->KeyLength, &tmp, NULL ) ? 0 : -1; + + if( i_ret < 0 ) + { + return i_ret; + } + + memcpy( p_challenge, key->KeyData, DVD_CHALLENGE_SIZE ); + +#elif defined( __QNXNTO__ ) + + INIT_CPT( GPCMD_REPORT_KEY, 16 ); + + p_cpt->cam_cdb[ 10 ] = DVD_REPORT_CHALLENGE | (*pi_agid << 6); + + i_ret = devctl(i_fd, DCMD_CAM_PASS_THRU, p_cpt, structSize, NULL); + + memcpy( p_challenge, p_buffer + 4, DVD_CHALLENGE_SIZE ); + +#elif defined( __OS2__ ) + INIT_SSC( GPCMD_REPORT_KEY, 16 ); + + sdc.command[ 10 ] = DVD_REPORT_CHALLENGE | (*pi_agid << 6); + + i_ret = DosDevIOCtl(i_fd, IOCTL_CDROMDISK, CDROMDISK_EXECMD, + &sdc, sizeof(sdc), &ulParamLen, + p_buffer, sizeof(p_buffer), &ulDataLen); + + memcpy( p_challenge, p_buffer + 4, DVD_CHALLENGE_SIZE ); + +#else +# error "DVD ioctls are unavailable on this system" + +#endif + return i_ret; +} + +/***************************************************************************** + * ioctl_ReportASF: get ASF from the drive + *****************************************************************************/ +int ioctl_ReportASF( int i_fd, int *pi_asf ) +{ + int i_ret; + +#if defined( HAVE_LINUX_DVD_STRUCT ) + dvd_authinfo auth_info = { 0 }; + + auth_info.type = DVD_LU_SEND_ASF; + auth_info.lsasf.asf = *pi_asf; + + i_ret = ioctl( i_fd, DVD_AUTH, &auth_info ); + + *pi_asf = auth_info.lsasf.asf; + +#elif defined( HAVE_BSD_DVD_STRUCT ) + struct dvd_authinfo auth_info = { 0 }; + + auth_info.format = DVD_REPORT_ASF; + auth_info.asf = *pi_asf; + + i_ret = ioctl( i_fd, DVDIOCREPORTKEY, &auth_info ); + + *pi_asf = auth_info.asf; + +#elif defined( __HAIKU__ ) + INIT_RDC( GPCMD_REPORT_KEY, 8 ); + + rdc.command[ 10 ] = DVD_REPORT_ASF; + + i_ret = ioctl( i_fd, B_RAW_DEVICE_COMMAND, &rdc, sizeof(rdc) ); + + *pi_asf = p_buffer[ 7 ] & 1; + +#elif defined( SOLARIS_USCSI ) + INIT_USCSI( GPCMD_REPORT_KEY, 8 ); + + rs_cdb.cdb_opaque[ 10 ] = DVD_REPORT_ASF; + + i_ret = SolarisSendUSCSI( i_fd, &sc ); + + if( i_ret < 0 || sc.uscsi_status ) + { + i_ret = -1; + } + + *pi_asf = p_buffer[ 7 ] & 1; + +#elif defined( DARWIN_DVD_IOCTL ) + INIT_DVDIOCTL( dk_dvd_report_key_t, DVDAuthenticationSuccessFlagInfo, + kDVDKeyFormatASF ); + + i_ret = ioctl( i_fd, DKIOCDVDREPORTKEY, &dvd ); + + *pi_asf = dvdbs.successFlag; + +#elif defined( _WIN32 ) + DWORD tmp; + uint8_t buffer[DVD_ASF_LENGTH] = { 0 }; + PDVD_COPY_PROTECT_KEY key = (PDVD_COPY_PROTECT_KEY) &buffer; + PDVD_ASF keyData; + + key->KeyLength = DVD_ASF_LENGTH; + key->KeyType = DvdAsf; + key->KeyFlags = 0; + + keyData = (PDVD_ASF)key->KeyData; + keyData->SuccessFlag = *pi_asf; + + i_ret = DeviceIoControl( (HANDLE) i_fd, IOCTL_DVD_READ_KEY, key, + key->KeyLength, key, key->KeyLength, &tmp, NULL ) ? 0 : -1; + + if( i_ret < 0 ) + { + return i_ret; + } + + keyData = (PDVD_ASF)key->KeyData; + *pi_asf = keyData->SuccessFlag; + +#elif defined( __QNXNTO__ ) + + INIT_CPT( GPCMD_REPORT_KEY, 8 ); + + p_cpt->cam_cdb[ 10 ] = DVD_REPORT_ASF; + + i_ret = devctl(i_fd, DCMD_CAM_PASS_THRU, p_cpt, structSize, NULL); + + *pi_asf = p_buffer[ 7 ] & 1; + +#elif defined( __OS2__ ) + INIT_SSC( GPCMD_REPORT_KEY, 8 ); + + sdc.command[ 10 ] = DVD_REPORT_ASF; + + i_ret = DosDevIOCtl(i_fd, IOCTL_CDROMDISK, CDROMDISK_EXECMD, + &sdc, sizeof(sdc), &ulParamLen, + p_buffer, sizeof(p_buffer), &ulDataLen); + + *pi_asf = p_buffer[ 7 ] & 1; + +#else +# error "DVD ioctls are unavailable on this system" + +#endif + return i_ret; +} + +/***************************************************************************** + * ioctl_ReportKey1: get the first key from the drive + *****************************************************************************/ +int ioctl_ReportKey1( int i_fd, const int *pi_agid, uint8_t *p_key ) +{ + int i_ret; + +#if defined( HAVE_LINUX_DVD_STRUCT ) + dvd_authinfo auth_info = { 0 }; + + auth_info.type = DVD_LU_SEND_KEY1; + auth_info.lsk.agid = *pi_agid; + + i_ret = ioctl( i_fd, DVD_AUTH, &auth_info ); + + memcpy( p_key, auth_info.lsk.key, DVD_KEY_SIZE ); + +#elif defined( HAVE_BSD_DVD_STRUCT ) + struct dvd_authinfo auth_info = { 0 }; + + auth_info.format = DVD_REPORT_KEY1; + auth_info.agid = *pi_agid; + + i_ret = ioctl( i_fd, DVDIOCREPORTKEY, &auth_info ); + + memcpy( p_key, auth_info.keychal, DVD_KEY_SIZE ); + +#elif defined( __HAIKU__ ) + INIT_RDC( GPCMD_REPORT_KEY, 12 ); + + rdc.command[ 10 ] = DVD_REPORT_KEY1 | (*pi_agid << 6); + + i_ret = ioctl( i_fd, B_RAW_DEVICE_COMMAND, &rdc, sizeof(rdc) ); + + memcpy( p_key, p_buffer + 4, DVD_KEY_SIZE ); + +#elif defined( SOLARIS_USCSI ) + INIT_USCSI( GPCMD_REPORT_KEY, 12 ); + + rs_cdb.cdb_opaque[ 10 ] = DVD_REPORT_KEY1 | (*pi_agid << 6); + + i_ret = SolarisSendUSCSI( i_fd, &sc ); + + if( i_ret < 0 || sc.uscsi_status ) + { + i_ret = -1; + } + + memcpy( p_key, p_buffer + 4, DVD_KEY_SIZE ); + +#elif defined( DARWIN_DVD_IOCTL ) + INIT_DVDIOCTL( dk_dvd_report_key_t, DVDKey1Info, + kDVDKeyFormatKey1 ); + + dvd.grantID = *pi_agid; + + i_ret = ioctl( i_fd, DKIOCDVDREPORTKEY, &dvd ); + + memcpy( p_key, dvdbs.key1Value, DVD_KEY_SIZE ); + +#elif defined( _WIN32 ) + DWORD tmp; + uint8_t buffer[DVD_BUS_KEY_LENGTH] = { 0 }; + PDVD_COPY_PROTECT_KEY key = (PDVD_COPY_PROTECT_KEY) &buffer; + + key->KeyLength = DVD_BUS_KEY_LENGTH; + key->SessionId = *pi_agid; + key->KeyType = DvdBusKey1; + key->KeyFlags = 0; + + i_ret = DeviceIoControl( (HANDLE) i_fd, IOCTL_DVD_READ_KEY, key, + key->KeyLength, key, key->KeyLength, &tmp, NULL ) ? 0 : -1; + + memcpy( p_key, key->KeyData, DVD_KEY_SIZE ); + +#elif defined( __QNXNTO__ ) + + INIT_CPT( GPCMD_REPORT_KEY, 12 ); + + p_cpt->cam_cdb[ 10 ] = DVD_REPORT_KEY1 | (*pi_agid << 6); + + i_ret = devctl(i_fd, DCMD_CAM_PASS_THRU, p_cpt, structSize, NULL); + + memcpy( p_key, p_buffer + 4, DVD_KEY_SIZE ); + +#elif defined( __OS2__ ) + INIT_SSC( GPCMD_REPORT_KEY, 12 ); + + sdc.command[ 10 ] = DVD_REPORT_KEY1 | (*pi_agid << 6); + + i_ret = DosDevIOCtl(i_fd, IOCTL_CDROMDISK, CDROMDISK_EXECMD, + &sdc, sizeof(sdc), &ulParamLen, + p_buffer, sizeof(p_buffer), &ulDataLen); + + memcpy( p_key, p_buffer + 4, DVD_KEY_SIZE ); + +#else +# error "DVD ioctls are unavailable on this system" + +#endif + return i_ret; +} + +/***************************************************************************** + * ioctl_InvalidateAgid: invalidate the current AGID + *****************************************************************************/ +int ioctl_InvalidateAgid( int i_fd, int *pi_agid ) +{ + int i_ret; + +#if defined( HAVE_LINUX_DVD_STRUCT ) + dvd_authinfo auth_info = { 0 }; + + auth_info.type = DVDCSS_INVALIDATE_AGID; + auth_info.lsa.agid = *pi_agid; + + i_ret = ioctl( i_fd, DVD_AUTH, &auth_info ); + +#elif defined( HAVE_BSD_DVD_STRUCT ) + struct dvd_authinfo auth_info = { 0 }; + + auth_info.format = DVDCSS_INVALIDATE_AGID; + auth_info.agid = *pi_agid; + + i_ret = ioctl( i_fd, DVDIOCREPORTKEY, &auth_info ); + +#elif defined( __HAIKU__ ) + INIT_RDC( GPCMD_REPORT_KEY, 0 ); + + rdc.command[ 10 ] = DVDCSS_INVALIDATE_AGID | (*pi_agid << 6); + + i_ret = ioctl( i_fd, B_RAW_DEVICE_COMMAND, &rdc, sizeof(rdc) ); + +#elif defined( SOLARIS_USCSI ) + INIT_USCSI( GPCMD_REPORT_KEY, 0 ); + + rs_cdb.cdb_opaque[ 10 ] = DVDCSS_INVALIDATE_AGID | (*pi_agid << 6); + + i_ret = SolarisSendUSCSI( i_fd, &sc ); + + if( i_ret < 0 || sc.uscsi_status ) + { + i_ret = -1; + } + +#elif defined( DARWIN_DVD_IOCTL ) + INIT_DVDIOCTL( dk_dvd_send_key_t, DVDAuthenticationGrantIDInfo, + kDVDKeyFormatAGID_Invalidate ); + + dvd.grantID = *pi_agid; + + i_ret = ioctl( i_fd, DKIOCDVDSENDKEY, &dvd ); + +#elif defined( _WIN32 ) + DWORD tmp; + + i_ret = DeviceIoControl( (HANDLE) i_fd, IOCTL_DVD_END_SESSION, + pi_agid, sizeof( *pi_agid ), NULL, 0, &tmp, NULL ) ? 0 : -1; + +#elif defined( __QNXNTO__ ) + + INIT_CPT( GPCMD_REPORT_KEY, 0 ); + + p_cpt->cam_cdb[ 10 ] = DVDCSS_INVALIDATE_AGID | (*pi_agid << 6); + + i_ret = devctl(i_fd, DCMD_CAM_PASS_THRU, p_cpt, structSize, NULL); + +#elif defined( __OS2__ ) + INIT_SSC( GPCMD_REPORT_KEY, 1 ); + + sdc.data_length = 0; + sdc.command[ 8 ] = 0; + sdc.command[ 9 ] = 0; + + sdc.command[ 10 ] = DVDCSS_INVALIDATE_AGID | (*pi_agid << 6); + + i_ret = DosDevIOCtl(i_fd, IOCTL_CDROMDISK, CDROMDISK_EXECMD, + &sdc, sizeof(sdc), &ulParamLen, + NULL, 0, &ulDataLen); +#else +# error "DVD ioctls are unavailable on this system" + +#endif + return i_ret; +} + +/***************************************************************************** + * ioctl_SendChallenge: send challenge to the drive + *****************************************************************************/ +int ioctl_SendChallenge( int i_fd, const int *pi_agid, const uint8_t *p_challenge ) +{ + int i_ret; + +#if defined( HAVE_LINUX_DVD_STRUCT ) + dvd_authinfo auth_info = { 0 }; + + auth_info.type = DVD_HOST_SEND_CHALLENGE; + auth_info.hsc.agid = *pi_agid; + + memcpy( auth_info.hsc.chal, p_challenge, DVD_CHALLENGE_SIZE ); + + i_ret = ioctl( i_fd, DVD_AUTH, &auth_info ); + +#elif defined( HAVE_BSD_DVD_STRUCT ) + struct dvd_authinfo auth_info = { 0 }; + + auth_info.format = DVD_SEND_CHALLENGE; + auth_info.agid = *pi_agid; + + memcpy( auth_info.keychal, p_challenge, DVD_CHALLENGE_SIZE ); + + i_ret = ioctl( i_fd, DVDIOCSENDKEY, &auth_info ); + +#elif defined( __HAIKU__ ) + INIT_RDC( GPCMD_SEND_KEY, 16 ); + + rdc.command[ 10 ] = DVD_SEND_CHALLENGE | (*pi_agid << 6); + + p_buffer[ 1 ] = 0xe; + memcpy( p_buffer + 4, p_challenge, DVD_CHALLENGE_SIZE ); + + i_ret = ioctl( i_fd, B_RAW_DEVICE_COMMAND, &rdc, sizeof(rdc) ); + +#elif defined( SOLARIS_USCSI ) + INIT_USCSI( GPCMD_SEND_KEY, 16 ); + + rs_cdb.cdb_opaque[ 10 ] = DVD_SEND_CHALLENGE | (*pi_agid << 6); + + p_buffer[ 1 ] = 0xe; + memcpy( p_buffer + 4, p_challenge, DVD_CHALLENGE_SIZE ); + + if( SolarisSendUSCSI( i_fd, &sc ) < 0 || sc.uscsi_status ) + { + return -1; + } + + i_ret = 0; + +#elif defined( DARWIN_DVD_IOCTL ) + INIT_DVDIOCTL( dk_dvd_send_key_t, DVDChallengeKeyInfo, + kDVDKeyFormatChallengeKey ); + + dvd.grantID = *pi_agid; + dvd.keyClass = kDVDKeyClassCSS_CPPM_CPRM; + + dvdbs.dataLength[ 1 ] = 0xe; + memcpy( dvdbs.challengeKeyValue, p_challenge, DVD_CHALLENGE_SIZE ); + + i_ret = ioctl( i_fd, DKIOCDVDSENDKEY, &dvd ); + +#elif defined( _WIN32 ) + DWORD tmp; + uint8_t buffer[DVD_CHALLENGE_KEY_LENGTH] = { 0 }; + PDVD_COPY_PROTECT_KEY key = (PDVD_COPY_PROTECT_KEY) &buffer; + + key->KeyLength = DVD_CHALLENGE_KEY_LENGTH; + key->SessionId = *pi_agid; + key->KeyType = DvdChallengeKey; + key->KeyFlags = 0; + + memcpy( key->KeyData, p_challenge, DVD_CHALLENGE_SIZE ); + + i_ret = DeviceIoControl( (HANDLE) i_fd, IOCTL_DVD_SEND_KEY, key, + key->KeyLength, key, key->KeyLength, &tmp, NULL ) ? 0 : -1; + +#elif defined( __QNXNTO__ ) + + INIT_CPT( GPCMD_SEND_KEY, 16 ); + + p_cpt->cam_cdb[ 10 ] = DVD_SEND_CHALLENGE | (*pi_agid << 6); + + p_buffer[ 1 ] = 0xe; + memcpy( p_buffer + 4, p_challenge, DVD_CHALLENGE_SIZE ); + + i_ret = devctl(i_fd, DCMD_CAM_PASS_THRU, p_cpt, structSize, NULL); + +#elif defined( __OS2__ ) + INIT_SSC( GPCMD_SEND_KEY, 16 ); + + sdc.command[ 10 ] = DVD_SEND_CHALLENGE | (*pi_agid << 6); + + p_buffer[ 1 ] = 0xe; + memcpy( p_buffer + 4, p_challenge, DVD_CHALLENGE_SIZE ); + + i_ret = DosDevIOCtl( i_fd, IOCTL_CDROMDISK, CDROMDISK_EXECMD, + &sdc, sizeof(sdc), &ulParamLen, + p_buffer, sizeof(p_buffer), &ulDataLen ); + +#else +# error "DVD ioctls are unavailable on this system" + +#endif + return i_ret; +} + +/***************************************************************************** + * ioctl_SendKey2: send the second key to the drive + *****************************************************************************/ +int ioctl_SendKey2( int i_fd, const int *pi_agid, const uint8_t *p_key ) +{ + int i_ret; + +#if defined( HAVE_LINUX_DVD_STRUCT ) + dvd_authinfo auth_info = { 0 }; + + auth_info.type = DVD_HOST_SEND_KEY2; + auth_info.hsk.agid = *pi_agid; + + memcpy( auth_info.hsk.key, p_key, DVD_KEY_SIZE ); + + i_ret = ioctl( i_fd, DVD_AUTH, &auth_info ); + +#elif defined( HAVE_BSD_DVD_STRUCT ) + struct dvd_authinfo auth_info = { 0 }; + + auth_info.format = DVD_SEND_KEY2; + auth_info.agid = *pi_agid; + + memcpy( auth_info.keychal, p_key, DVD_KEY_SIZE ); + + i_ret = ioctl( i_fd, DVDIOCSENDKEY, &auth_info ); + +#elif defined( __HAIKU__ ) + INIT_RDC( GPCMD_SEND_KEY, 12 ); + + rdc.command[ 10 ] = DVD_SEND_KEY2 | (*pi_agid << 6); + + p_buffer[ 1 ] = 0xa; + memcpy( p_buffer + 4, p_key, DVD_KEY_SIZE ); + + i_ret = ioctl( i_fd, B_RAW_DEVICE_COMMAND, &rdc, sizeof(rdc) ); + +#elif defined( SOLARIS_USCSI ) + INIT_USCSI( GPCMD_SEND_KEY, 12 ); + + rs_cdb.cdb_opaque[ 10 ] = DVD_SEND_KEY2 | (*pi_agid << 6); + + p_buffer[ 1 ] = 0xa; + memcpy( p_buffer + 4, p_key, DVD_KEY_SIZE ); + + if( SolarisSendUSCSI( i_fd, &sc ) < 0 || sc.uscsi_status ) + { + return -1; + } + + i_ret = 0; + +#elif defined( DARWIN_DVD_IOCTL ) + INIT_DVDIOCTL( dk_dvd_send_key_t, DVDKey2Info, + kDVDKeyFormatKey2 ); + + dvd.grantID = *pi_agid; + dvd.keyClass = kDVDKeyClassCSS_CPPM_CPRM; + + dvdbs.dataLength[ 1 ] = 0xa; + memcpy( dvdbs.key2Value, p_key, DVD_KEY_SIZE ); + + i_ret = ioctl( i_fd, DKIOCDVDSENDKEY, &dvd ); + +#elif defined( _WIN32 ) + DWORD tmp; + uint8_t buffer[DVD_BUS_KEY_LENGTH] = { 0 }; + PDVD_COPY_PROTECT_KEY key = (PDVD_COPY_PROTECT_KEY) &buffer; + + key->KeyLength = DVD_BUS_KEY_LENGTH; + key->SessionId = *pi_agid; + key->KeyType = DvdBusKey2; + key->KeyFlags = 0; + + memcpy( key->KeyData, p_key, DVD_KEY_SIZE ); + + i_ret = DeviceIoControl( (HANDLE) i_fd, IOCTL_DVD_SEND_KEY, key, + key->KeyLength, key, key->KeyLength, &tmp, NULL ) ? 0 : -1; + +#elif defined( __QNXNTO__ ) + + INIT_CPT( GPCMD_SEND_KEY, 12 ); + + p_cpt->cam_cdb[ 10 ] = DVD_SEND_KEY2 | (*pi_agid << 6); + + p_buffer[ 1 ] = 0xa; + memcpy( p_buffer + 4, p_key, DVD_KEY_SIZE ); + + i_ret = devctl(i_fd, DCMD_CAM_PASS_THRU, p_cpt, structSize, NULL); + +#elif defined( __OS2__ ) + INIT_SSC( GPCMD_SEND_KEY, 12 ); + + sdc.command[ 10 ] = DVD_SEND_KEY2 | (*pi_agid << 6); + + p_buffer[ 1 ] = 0xa; + memcpy( p_buffer + 4, p_key, DVD_KEY_SIZE ); + + i_ret = DosDevIOCtl( i_fd, IOCTL_CDROMDISK, CDROMDISK_EXECMD, + &sdc, sizeof(sdc), &ulParamLen, + p_buffer, sizeof(p_buffer), &ulDataLen ); + +#else +# error "DVD ioctls are unavailable on this system" + +#endif + return i_ret; +} + +/***************************************************************************** + * ioctl_ReportRPC: get RPC (Regional Playback Control) status for the drive + *****************************************************************************/ +int ioctl_ReportRPC( int i_fd, int *p_type, int *p_mask, int *p_scheme ) +{ + int i_ret; + +#if defined( HAVE_LINUX_DVD_STRUCT ) && defined( DVD_LU_SEND_RPC_STATE ) + dvd_authinfo auth_info = { 0 }; + + auth_info.type = DVD_LU_SEND_RPC_STATE; + + i_ret = ioctl( i_fd, DVD_AUTH, &auth_info ); + + *p_type = auth_info.lrpcs.type; + *p_mask = auth_info.lrpcs.region_mask; + *p_scheme = auth_info.lrpcs.rpc_scheme; + +#elif defined( HAVE_LINUX_DVD_STRUCT ) + /* FIXME: OpenBSD doesn't know this */ + i_ret = -1; + +#elif defined( HAVE_BSD_DVD_STRUCT ) + struct dvd_authinfo auth_info = { 0 }; + + auth_info.format = DVD_REPORT_RPC; + + i_ret = ioctl( i_fd, DVDIOCREPORTKEY, &auth_info ); + + *p_type = auth_info.reg_type; + *p_mask = auth_info.region; // ?? + *p_scheme = auth_info.rpc_scheme; + +#elif defined( __HAIKU__ ) + INIT_RDC( GPCMD_REPORT_KEY, 8 ); + + rdc.command[ 10 ] = DVD_REPORT_RPC; + + i_ret = ioctl( i_fd, B_RAW_DEVICE_COMMAND, &rdc, sizeof(rdc) ); + + *p_type = p_buffer[ 4 ] >> 6; + *p_mask = p_buffer[ 5 ]; + *p_scheme = p_buffer[ 6 ]; + +#elif defined( SOLARIS_USCSI ) + INIT_USCSI( GPCMD_REPORT_KEY, 8 ); + + rs_cdb.cdb_opaque[ 10 ] = DVD_REPORT_RPC; + + i_ret = SolarisSendUSCSI( i_fd, &sc ); + + if( i_ret < 0 || sc.uscsi_status ) + { + i_ret = -1; + } + + *p_type = p_buffer[ 4 ] >> 6; + *p_mask = p_buffer[ 5 ]; + *p_scheme = p_buffer[ 6 ]; + +#elif defined( DARWIN_DVD_IOCTL ) + INIT_DVDIOCTL( dk_dvd_report_key_t, DVDRegionPlaybackControlInfo, + kDVDKeyFormatRegionState ); + + dvd.keyClass = kDVDKeyClassCSS_CPPM_CPRM; + + i_ret = ioctl( i_fd, DKIOCDVDREPORTKEY, &dvd ); + + *p_type = dvdbs.typeCode; + *p_mask = dvdbs.driveRegion; + *p_scheme = dvdbs.rpcScheme; + +#elif defined( _WIN32 ) + DWORD tmp; + uint8_t buffer[DVD_RPC_KEY_LENGTH] = { 0 }; + PDVD_COPY_PROTECT_KEY key = (PDVD_COPY_PROTECT_KEY) &buffer; + PDVD_RPC_KEY keyData; + + key->KeyLength = DVD_RPC_KEY_LENGTH; + key->KeyType = DvdGetRpcKey; + key->KeyFlags = 0; + + i_ret = DeviceIoControl( (HANDLE) i_fd, IOCTL_DVD_READ_KEY, key, + key->KeyLength, key, key->KeyLength, &tmp, NULL ) ? 0 : -1; + + if( i_ret < 0 ) + { + return i_ret; + } + + keyData = (PDVD_RPC_KEY)key->KeyData; + *p_type = keyData->TypeCode; + *p_mask = keyData->RegionMask; + *p_scheme = keyData->RpcScheme; + +#elif defined( __QNXNTO__ ) + + INIT_CPT( GPCMD_REPORT_KEY, 8 ); + + p_cpt->cam_cdb[ 10 ] = DVD_REPORT_RPC; + + i_ret = devctl(i_fd, DCMD_CAM_PASS_THRU, p_cpt, structSize, NULL); + + *p_type = p_buffer[ 4 ] >> 6; + *p_mask = p_buffer[ 5 ]; + *p_scheme = p_buffer[ 6 ]; + +#elif defined( __OS2__ ) + INIT_SSC( GPCMD_REPORT_KEY, 8 ); + + sdc.command[ 10 ] = DVD_REPORT_RPC; + + i_ret = DosDevIOCtl(i_fd, IOCTL_CDROMDISK, CDROMDISK_EXECMD, + &sdc, sizeof(sdc), &ulParamLen, + p_buffer, sizeof(p_buffer), &ulDataLen); + + *p_type = p_buffer[ 4 ] >> 6; + *p_mask = p_buffer[ 5 ]; + *p_scheme = p_buffer[ 6 ]; + +#else +# error "DVD ioctls are unavailable on this system" + +#endif + return i_ret; +} + +/* Local prototypes */ + +#if defined( __HAIKU__ ) +/***************************************************************************** + * BeInitRDC: initialize a RDC structure for the Haiku kernel + ***************************************************************************** + * This function initializes a Haiku raw device command structure for future + * use, either a read command or a write command. + *****************************************************************************/ +static void BeInitRDC( raw_device_command *p_rdc, int i_type ) +{ + memset( p_rdc->data, 0, p_rdc->data_length ); + + switch( i_type ) + { + case GPCMD_SEND_KEY: + /* leave the flags to 0 */ + break; + + case GPCMD_READ_DVD_STRUCTURE: case GPCMD_REPORT_KEY: + p_rdc->flags = B_RAW_DEVICE_DATA_IN; break; } + + p_rdc->command[ 0 ] = i_type; + + p_rdc->command[ 8 ] = (p_rdc->data_length >> 8) & 0xff; + p_rdc->command[ 9 ] = p_rdc->data_length & 0xff; + p_rdc->command_length = 12; + + p_rdc->sense_data = NULL; + p_rdc->sense_data_length = 0; + + p_rdc->timeout = 1000000; +} +#endif + +#if defined( SOLARIS_USCSI ) +/***************************************************************************** + * SolarisInitUSCSI: initialize a USCSICMD structure for the Solaris kernel + ***************************************************************************** + * This function initializes a Solaris userspace SCSI command structure for + * future use, either a read command or a write command. + *****************************************************************************/ +static void SolarisInitUSCSI( struct uscsi_cmd *p_sc, int i_type ) +{ + union scsi_cdb *rs_cdb; + memset( p_sc->uscsi_cdb, 0, sizeof( union scsi_cdb ) ); + memset( p_sc->uscsi_bufaddr, 0, p_sc->uscsi_buflen ); + + switch( i_type ) + { + case GPCMD_SEND_KEY: + p_sc->uscsi_flags = USCSI_ISOLATE | USCSI_WRITE; + break; + + case GPCMD_READ_DVD_STRUCTURE: + case GPCMD_REPORT_KEY: + p_sc->uscsi_flags = USCSI_ISOLATE | USCSI_READ; + break; + } + + rs_cdb = (union scsi_cdb *)p_sc->uscsi_cdb; + + rs_cdb->scc_cmd = i_type; + + rs_cdb->cdb_opaque[ 8 ] = (p_sc->uscsi_buflen >> 8) & 0xff; + rs_cdb->cdb_opaque[ 9 ] = p_sc->uscsi_buflen & 0xff; + p_sc->uscsi_cdblen = 12; + p_sc->uscsi_timeout = 15; +} + +/***************************************************************************** + * SolarisSendUSCSI: send a USCSICMD structure to the Solaris kernel + * for execution + ***************************************************************************** + * When available, this function uses the function smedia_uscsi_cmd() + * from Solaris' libsmedia library (Solaris 9 or newer) to execute the + * USCSI command. smedia_uscsi_cmd() allows USCSI commands for + * non-root users on removable media devices on Solaris 9; sending the + * USCSI command directly to the device using the USCSICMD ioctl fails + * with an EPERM error on Solaris 9. + * + * The code will fall back to the USCSICMD ioctl method, when + * libsmedia.so is not available or does not export the + * smedia_uscsi_cmd() function (on Solaris releases up to and including + * Solaris 8). Fortunately, on these old releases non-root users are + * allowed to perform USCSICMD ioctls on removable media devices. + *****************************************************************************/ +static int SolarisSendUSCSI( int i_fd, struct uscsi_cmd *p_sc ) +{ + void *p_handle; + + /* We use static variables to keep track of the libsmedia symbols, which + * is harmless even in a multithreaded program because the library and + * its symbols will always be mapped at the same address. */ + static int b_tried = 0; + static int b_have_sm = 0; + static void * (*p_get_handle) ( int32_t ); + static int (*p_uscsi_cmd) ( void *, struct uscsi_cmd * ); + static int (*p_release_handle) ( void * ); + + if( !b_tried ) + { + void *p_lib; + + p_lib = dlopen( "libsmedia.so", RTLD_NOW ); + if( p_lib ) + { + p_get_handle = dlsym( p_lib, "smedia_get_handle" ); + p_uscsi_cmd = dlsym( p_lib, "smedia_uscsi_cmd" ); + p_release_handle = dlsym( p_lib, "smedia_release_handle" ); + + if( p_get_handle && p_uscsi_cmd && p_release_handle ) + { + b_have_sm = 1; + } + else + { + dlclose( p_lib ); + } + } + + b_tried = 1; + } + + if( b_have_sm && (p_handle = p_get_handle(i_fd)) ) + { + int i_ret = p_uscsi_cmd( p_handle, p_sc ); + p_release_handle( p_handle ); + return i_ret; + } + + return ioctl( i_fd, USCSICMD, p_sc ); +} +#endif /* defined( SOLARIS_USCSI ) */ + +#if defined( _WIN32 ) +/***************************************************************************** + * WinInitSPTD: initialize a sptd structure + ***************************************************************************** + * This function initializes a SCSI pass through command structure for future + * use, either a read command or a write command. + *****************************************************************************/ +static void WinInitSPTD( SCSI_PASS_THROUGH_DIRECT *p_sptd, int i_type ) +{ + memset( p_sptd->DataBuffer, 0, p_sptd->DataTransferLength ); + + switch( i_type ) + { + case GPCMD_SEND_KEY: + p_sptd->DataIn = SCSI_IOCTL_DATA_OUT; + break; + + case GPCMD_READ_DVD_STRUCTURE: + case GPCMD_REPORT_KEY: + p_sptd->DataIn = SCSI_IOCTL_DATA_IN; + break; + } + + p_sptd->Cdb[ 0 ] = i_type; + p_sptd->Cdb[ 8 ] = (uint8_t)(p_sptd->DataTransferLength >> 8) & 0xff; + p_sptd->Cdb[ 9 ] = (uint8_t) p_sptd->DataTransferLength & 0xff; + p_sptd->CdbLength = 12; + + p_sptd->TimeOutValue = 2; +} +#endif /* defined( _WIN32 ) */ + +#if defined( __QNXNTO__ ) +/***************************************************************************** + * QNXInitCPT: initialize a CPT structure for QNX Neutrino + ***************************************************************************** + * This function initializes a cpt command structure for future use, + * either a read command or a write command. + *****************************************************************************/ +static void QNXInitCPT( CAM_PASS_THRU * p_cpt, int i_type ) +{ + switch( i_type ) + { + case GPCMD_SEND_KEY: + p_cpt->cam_flags = CAM_DIR_OUT; + break; + + case GPCMD_READ_DVD_STRUCTURE: + case GPCMD_REPORT_KEY: + p_cpt->cam_flags = CAM_DIR_IN; + break; + } + + p_cpt->cam_cdb[0] = i_type; + + p_cpt->cam_cdb[ 8 ] = (p_cpt->cam_dxfer_len >> 8) & 0xff; + p_cpt->cam_cdb[ 9 ] = p_cpt->cam_dxfer_len & 0xff; + p_cpt->cam_cdb_len = 12; + + p_cpt->cam_timeout = CAM_TIME_DEFAULT; +} +#endif /* defined( __QNXNTO__ ) */ + +#if defined( __OS2__ ) +/***************************************************************************** + * OS2InitSDC: initialize a SDC structure for the Execute SCSI-command + ***************************************************************************** + * This function initializes an OS/2 'execute SCSI command' structure for + * future use, either a read command or a write command. + *****************************************************************************/ +static void OS2InitSDC( struct OS2_ExecSCSICmd *p_sdc, int i_type ) +{ + switch( i_type ) + { + case GPCMD_SEND_KEY: + p_sdc->flags = 0; + break; + + case GPCMD_READ_DVD_STRUCTURE: + case GPCMD_REPORT_KEY: + p_sdc->flags = EX_DIRECTION_IN; + break; + } + + p_sdc->command[ 0 ] = i_type; + p_sdc->command[ 8 ] = (p_sdc->data_length >> 8) & 0xff; + p_sdc->command[ 9 ] = p_sdc->data_length & 0xff; + p_sdc->id_code = 0x31304443; // 'CD01' + p_sdc->cmd_length = 12; +} +#endif /* defined( __OS2__ ) */ diff --git a/src/ioctl.h b/src/ioctl.h new file mode 100644 index 0000000..9cf3b41 --- /dev/null +++ b/src/ioctl.h @@ -0,0 +1,276 @@ +/***************************************************************************** + * ioctl.h: DVD ioctl replacement function + ***************************************************************************** + * Copyright (C) 1999-2001 VideoLAN + * + * Authors: Sam Hocevar + * + * libdvdcss 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. + * + * libdvdcss 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 libdvdcss; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + *****************************************************************************/ + +#ifndef DVDCSS_IOCTL_H +#define DVDCSS_IOCTL_H + +#include + +int ioctl_ReadCopyright ( int, int, int * ); +int ioctl_ReadDiscKey ( int, const int *, uint8_t * ); +int ioctl_ReadTitleKey ( int, const int *, int, uint8_t * ); +int ioctl_ReportAgid ( int, int * ); +int ioctl_ReportChallenge ( int, const int *, uint8_t * ); +int ioctl_ReportKey1 ( int, const int *, uint8_t * ); +int ioctl_ReportASF ( int, int * ); +int ioctl_InvalidateAgid ( int, int * ); +int ioctl_SendChallenge ( int, const int *, const uint8_t * ); +int ioctl_SendKey2 ( int, const int *, const uint8_t * ); +int ioctl_ReportRPC ( int, int *, int *, int * ); + +#define DVD_DISCKEY_SIZE 2048 + +/***************************************************************************** + * Common macros, OS-specific + *****************************************************************************/ +#if defined( __HAIKU__ ) +#define INIT_RDC( TYPE, SIZE ) \ + raw_device_command rdc = { 0 }; \ + uint8_t p_buffer[ (SIZE)+1 ]; \ + rdc.data = (char *)p_buffer; \ + rdc.data_length = (SIZE); \ + BeInitRDC( &rdc, (TYPE) ); +#elif defined( SOLARIS_USCSI ) +#define INIT_USCSI( TYPE, SIZE ) \ + struct uscsi_cmd sc = { 0 }; \ + union scsi_cdb rs_cdb; \ + uint8_t p_buffer[ (SIZE)+1 ]; \ + sc.uscsi_cdb = (caddr_t)&rs_cdb; \ + sc.uscsi_bufaddr = (caddr_t)p_buffer; \ + sc.uscsi_buflen = (SIZE); \ + SolarisInitUSCSI( &sc, (TYPE) ); +#elif defined( DARWIN_DVD_IOCTL ) +#define INIT_DVDIOCTL( DKDVD_TYPE, BUFFER_TYPE, FORMAT ) \ + DKDVD_TYPE dvd = { 0 }; \ + BUFFER_TYPE dvdbs = { 0 }; \ + dvd.format = FORMAT; \ + dvd.buffer = &dvdbs; \ + dvd.bufferLength = sizeof(dvdbs); +#elif defined( __QNXNTO__ ) +#define INIT_CPT( TYPE, SIZE ) \ + CAM_PASS_THRU * p_cpt = { 0 }; \ + uint8_t * p_buffer; \ + int structSize = sizeof( CAM_PASS_THRU ) + (SIZE); \ + p_cpt = (CAM_PASS_THRU *) malloc ( structSize ); \ + p_buffer = (uint8_t *) p_cpt + sizeof( CAM_PASS_THRU ); \ + p_cpt->cam_data_ptr = sizeof( CAM_PASS_THRU ); \ + p_cpt->cam_dxfer_len = (SIZE); \ + QNXInitCPT( p_cpt, (TYPE) ); +#elif defined( __OS2__ ) +#define INIT_SSC( TYPE, SIZE ) \ + struct OS2_ExecSCSICmd sdc = { 0 }; \ + uint8_t p_buffer[ (SIZE) + 1 ] = { 0 }; \ + unsigned long ulParamLen; \ + unsigned long ulDataLen; \ + sdc.data_length = (SIZE); \ + ulParamLen = sizeof(sdc); \ + OS2InitSDC( &sdc, (TYPE) ) +#endif + +/***************************************************************************** + * Additional types, OpenBSD-specific + *****************************************************************************/ +#if defined( HAVE_OPENBSD_DVD_STRUCT ) +typedef union dvd_struct dvd_struct; +typedef union dvd_authinfo dvd_authinfo; +#endif + +/***************************************************************************** + * Various DVD I/O tables + *****************************************************************************/ +/* The generic packet command opcodes for CD/DVD Logical Units, + * From Table 57 of the SFF8090 Ver. 3 (Mt. Fuji) draft standard. */ +#define GPCMD_READ_DVD_STRUCTURE 0xad +#define GPCMD_REPORT_KEY 0xa4 +#define GPCMD_SEND_KEY 0xa3 + /* DVD struct types */ +#define DVD_STRUCT_PHYSICAL 0x00 +#define DVD_STRUCT_COPYRIGHT 0x01 +#define DVD_STRUCT_DISCKEY 0x02 +#define DVD_STRUCT_BCA 0x03 +#define DVD_STRUCT_MANUFACT 0x04 + /* Key formats */ +#define DVD_REPORT_AGID 0x00 +#define DVD_REPORT_CHALLENGE 0x01 +#define DVD_SEND_CHALLENGE 0x01 +#define DVD_REPORT_KEY1 0x02 +#define DVD_SEND_KEY2 0x03 +#define DVD_REPORT_TITLE_KEY 0x04 +#define DVD_REPORT_ASF 0x05 +#define DVD_SEND_RPC 0x06 +#define DVD_REPORT_RPC 0x08 +#define DVDCSS_INVALIDATE_AGID 0x3f + +/***************************************************************************** + * Win32-ioctl-specific + *****************************************************************************/ +#if defined( _WIN32 ) + +#define _WIN32_LEAN_AND_MEAN +#include +#include + +#define IOCTL_DVD_START_SESSION CTL_CODE(FILE_DEVICE_DVD, 0x0400, METHOD_BUFFERED, FILE_READ_ACCESS) +#define IOCTL_DVD_READ_KEY CTL_CODE(FILE_DEVICE_DVD, 0x0401, METHOD_BUFFERED, FILE_READ_ACCESS) +#define IOCTL_DVD_SEND_KEY CTL_CODE(FILE_DEVICE_DVD, 0x0402, METHOD_BUFFERED, FILE_READ_ACCESS) +#define IOCTL_DVD_END_SESSION CTL_CODE(FILE_DEVICE_DVD, 0x0403, METHOD_BUFFERED, FILE_READ_ACCESS) +#define IOCTL_DVD_GET_REGION CTL_CODE(FILE_DEVICE_DVD, 0x0405, METHOD_BUFFERED, FILE_READ_ACCESS) +#define IOCTL_DVD_SEND_KEY2 CTL_CODE(FILE_DEVICE_DVD, 0x0406, METHOD_BUFFERED, FILE_READ_ACCESS | FILE_WRITE_ACCESS) +#define IOCTL_DVD_READ_STRUCTURE CTL_CODE(FILE_DEVICE_DVD, 0x0450, METHOD_BUFFERED, FILE_READ_ACCESS) +#define IOCTL_SCSI_PASS_THROUGH_DIRECT CTL_CODE(FILE_DEVICE_CONTROLLER, 0x0405, METHOD_BUFFERED, FILE_READ_ACCESS | FILE_WRITE_ACCESS) + +#define DVD_CHALLENGE_KEY_LENGTH (12 + sizeof(DVD_COPY_PROTECT_KEY)) +#define DVD_BUS_KEY_LENGTH (8 + sizeof(DVD_COPY_PROTECT_KEY)) +#define DVD_TITLE_KEY_LENGTH (8 + sizeof(DVD_COPY_PROTECT_KEY)) +#define DVD_DISK_KEY_LENGTH (2048 + sizeof(DVD_COPY_PROTECT_KEY)) +#define DVD_RPC_KEY_LENGTH (sizeof(DVD_RPC_KEY) + sizeof(DVD_COPY_PROTECT_KEY)) +#define DVD_ASF_LENGTH (sizeof(DVD_ASF) + sizeof(DVD_COPY_PROTECT_KEY)) + +#define DVD_COPYRIGHT_MASK 0x00000040 +#define DVD_NOT_COPYRIGHTED 0x00000000 +#define DVD_COPYRIGHTED 0x00000040 + +#define DVD_SECTOR_PROTECT_MASK 0x00000020 +#define DVD_SECTOR_NOT_PROTECTED 0x00000000 +#define DVD_SECTOR_PROTECTED 0x00000020 + +#define SCSI_IOCTL_DATA_OUT 0 +#define SCSI_IOCTL_DATA_IN 1 + +typedef ULONG DVD_SESSION_ID, *PDVD_SESSION_ID; + +typedef enum DVD_STRUCTURE_FORMAT { + DvdPhysicalDescriptor, + DvdCopyrightDescriptor, + DvdDiskKeyDescriptor, + DvdBCADescriptor, + DvdManufacturerDescriptor, + DvdMaxDescriptor +} DVD_STRUCTURE_FORMAT, *PDVD_STRUCTURE_FORMAT; + +typedef struct DVD_READ_STRUCTURE { + LARGE_INTEGER BlockByteOffset; + DVD_STRUCTURE_FORMAT Format; + DVD_SESSION_ID SessionId; + UCHAR LayerNumber; +} DVD_READ_STRUCTURE, *PDVD_READ_STRUCTURE; + +typedef struct DVD_COPYRIGHT_DESCRIPTOR { + UCHAR CopyrightProtectionType; + UCHAR RegionManagementInformation; + USHORT Reserved; +} DVD_COPYRIGHT_DESCRIPTOR, *PDVD_COPYRIGHT_DESCRIPTOR; + +typedef enum +{ + DvdChallengeKey = 0x01, + DvdBusKey1, + DvdBusKey2, + DvdTitleKey, + DvdAsf, + DvdSetRpcKey = 0x6, + DvdGetRpcKey = 0x8, + DvdDiskKey = 0x80, + DvdInvalidateAGID = 0x3f +} DVD_KEY_TYPE; + +typedef struct DVD_COPY_PROTECT_KEY +{ + ULONG KeyLength; + DVD_SESSION_ID SessionId; + DVD_KEY_TYPE KeyType; + ULONG KeyFlags; + union + { + struct + { + ULONG FileHandle; + ULONG Reserved; // used for NT alignment + }; + LARGE_INTEGER TitleOffset; + } Parameters; + UCHAR KeyData[0]; +} DVD_COPY_PROTECT_KEY, *PDVD_COPY_PROTECT_KEY; + +typedef struct DVD_ASF +{ + UCHAR Reserved0[3]; + UCHAR SuccessFlag:1; + UCHAR Reserved1:7; +} DVD_ASF, * PDVD_ASF; + +typedef struct DVD_RPC_KEY +{ + UCHAR UserResetsAvailable:3; + UCHAR ManufacturerResetsAvailable:3; + UCHAR TypeCode:2; + UCHAR RegionMask; + UCHAR RpcScheme; + UCHAR Reserved2[1]; +} DVD_RPC_KEY, * PDVD_RPC_KEY; + +typedef struct SCSI_PASS_THROUGH_DIRECT +{ + USHORT Length; + UCHAR ScsiStatus; + UCHAR PathId; + UCHAR TargetId; + UCHAR Lun; + UCHAR CdbLength; + UCHAR SenseInfoLength; + UCHAR DataIn; + ULONG DataTransferLength; + ULONG TimeOutValue; + PVOID DataBuffer; + ULONG SenseInfoOffset; + UCHAR Cdb[16]; +} SCSI_PASS_THROUGH_DIRECT, *PSCSI_PASS_THROUGH_DIRECT; + +#endif /* defined( _WIN32 ) */ + +/***************************************************************************** + * OS/2-ioctl-specific + *****************************************************************************/ +#if defined( __OS2__ ) + +#define CDROMDISK_EXECMD 0x7A + +#define EX_DIRECTION_IN 0x01 +#define EX_PLAYING_CHK 0x02 + +#pragma pack(1) + +struct OS2_ExecSCSICmd +{ + unsigned long id_code; // 'CD01' + unsigned short data_length; // length of the Data Packet + unsigned short cmd_length; // length of the Command Buffer + unsigned short flags; // flags + unsigned char command[16]; // Command Buffer for SCSI command + +} OS2_ExecSCSICmd; + +#pragma pack() + +#endif /* defined( __OS2__ ) */ + +#endif /* DVDCSS_IOCTL_H */ diff --git a/src/libdvdcss.c b/src/libdvdcss.c new file mode 100644 index 0000000..78067a1 --- /dev/null +++ b/src/libdvdcss.c @@ -0,0 +1,863 @@ +/* libdvdcss.c: DVD reading library. + * + * Authors: Stéphane Borel + * Sam Hocevar + * Håkan Hjort + * + * Copyright (C) 1998-2008 VideoLAN + * + * libdvdcss 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. + * + * libdvdcss 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 libdvdcss; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +/** + * \mainpage libdvdcss developer documentation + * + * \section intro Introduction + * + * \e libdvdcss is a simple library designed for accessing DVDs like a block + * device without having to bother about the decryption. The important features + * are: + * \li portability: Currently supported platforms are GNU/Linux, FreeBSD, + * NetBSD, OpenBSD, Haiku, Mac OS X, Solaris, QNX, OS/2, and Windows + * 2000 or later. + * \li adaptability: Unlike most similar projects, libdvdcss does not require + * the region of your drive to be set and will try its best to read from + * the disc even in the case of a region mismatch. + * \li simplicity: A DVD player can be built around the \e libdvdcss API using + * no more than 4 or 5 library calls. + * + * \e libdvdcss is free software, released under the GNU General Public License. + * This ensures that \e libdvdcss remains free and used only with free + * software. + * + * \section api The libdvdcss API + * + * The complete \e libdvdcss programming interface is documented in the + * dvdcss.h file. + * + * \section env Environment variables + * + * Some environment variables can be used to change the behavior of + * \e libdvdcss without having to modify the program which uses it. These + * variables are: + * + * \li \b DVDCSS_VERBOSE: Sets the verbosity level. + * - \c 0 outputs no messages at all. + * - \c 1 outputs error messages to stderr. + * - \c 2 outputs error messages and debug messages to stderr. + * + * \li \b DVDCSS_METHOD: Sets the authentication and decryption method + * that \e libdvdcss will use to read scrambled discs. Can be one + * of \c title, \c key or \c disc. + * - \c key is the default method. \e libdvdcss will use a set of + * calculated player keys to try and get the disc key. This can fail + * if the drive does not recognize any of the player keys. + * - \c disc is a fallback method when \c key has failed. Instead of + * using player keys, \e libdvdcss will crack the disc key using + * a brute force algorithm. This process is CPU intensive and requires + * 64 MB of memory to store temporary data. + * - \c title is the fallback when all other methods have failed. It does + * not rely on a key exchange with the DVD drive, but rather uses a + * crypto attack to guess the title key. In rare cases this may fail + * because there is not enough encrypted data on the disc to perform + * a statistical attack, but on the other hand it is the only way to + * decrypt a DVD stored on a hard disc, or a DVD with the wrong region + * on an RPC2 drive. + * + * \li \b DVDCSS_RAW_DEVICE: Specify the raw device to use. Exact usage will + * depend on your operating system, the Linux utility to set up raw devices + * is \c raw(8) for instance. Please note that on most operating systems, + * using a raw device requires highly aligned buffers: Linux requires a + * 2048 bytes alignment (which is the size of a DVD sector). + * + * \li \b DVDCSS_CACHE: Specify a directory in which to cache title key + * values. This will speed up descrambling of DVDs which are in the + * cache. The DVDCSS_CACHE directory is created if it does not exist, + * and a subdirectory is created named after the DVD's title or + * manufacturing date. If DVDCSS_CACHE is not set or is empty, \e libdvdcss + * will use the default value which is "${HOME}/.dvdcss/" under Unix and + * "C:\Documents and Settings\$USER\Application Data\dvdcss\" under Win32. + * The special value "off" disables caching. + */ + +/* + * Preamble + */ +#include "config.h" + +#include +#include +#include +#include +#include +#include +#ifdef HAVE_SYS_PARAM_H +# include +#endif +#ifdef HAVE_PWD_H +# include +#endif +#include +#include + +#ifdef HAVE_UNISTD_H +# include +#endif + +#ifdef _WIN32 +# include +# include +#endif + +#include "dvdcss/dvdcss.h" + +#include "common.h" +#include "css.h" +#include "libdvdcss.h" +#include "ioctl.h" +#include "device.h" + +#ifdef HAVE_BROKEN_MKDIR +#include +#define mkdir(a, b) _mkdir(a) +#endif + +#define CACHE_TAG_NAME "CACHEDIR.TAG" + +#define STRING_KEY_SIZE (DVD_KEY_SIZE * 2) +#define INTERESTING_SECTOR 16 +#define DISC_TITLE_OFFSET 40 +#define DISC_TITLE_LENGTH 32 +#define MANUFACTURING_DATE_OFFSET 813 +#define MANUFACTURING_DATE_LENGTH 16 + +static int exists_or_mkdir( const char *path, int perm ) +{ + /* mkdir() may return an error if making the directory would fail, + * even if the directory exists, so use stat() to test for existence + * before trying to make the directory. */ + struct stat st; + if( stat(path, &st) ) + return mkdir(path, perm); + return 0; +} + +static dvdcss_t dvdcss_open_common ( const char *psz_target, void *p_stream, + dvdcss_stream_cb *p_stream_cb ); +static void set_verbosity( dvdcss_t dvdcss ) +{ + const char *psz_verbose = getenv( "DVDCSS_VERBOSE" ); + + dvdcss->b_debug = 0; + dvdcss->b_errors = 0; + + if( psz_verbose != NULL ) + { + int i = atoi( psz_verbose ); + + if( i >= 2 ) + dvdcss->b_debug = 1; + if( i >= 1 ) + dvdcss->b_errors = 1; + } +} + +static int set_access_method( dvdcss_t dvdcss ) +{ + const char *psz_method = getenv( "DVDCSS_METHOD" ); + + if( !psz_method ) + return 0; + + if( !strncmp( psz_method, "key", 4 ) ) + { + dvdcss->i_method = DVDCSS_METHOD_KEY; + } + else if( !strncmp( psz_method, "disc", 5 ) ) + { + dvdcss->i_method = DVDCSS_METHOD_DISC; + } + else if( !strncmp( psz_method, "title", 5 ) ) + { + dvdcss->i_method = DVDCSS_METHOD_TITLE; + } + else + { + print_error( dvdcss, "unknown decryption method %s, please choose " + "from 'title', 'key' or 'disc'", psz_method ); + return -1; + } + return 0; +} + +static int set_cache_directory( dvdcss_t dvdcss ) +{ + char *psz_cache = getenv( "DVDCSS_CACHE" ); + + if( psz_cache && !strcmp( psz_cache, "off" ) ) + { + return -1; + } + + if( psz_cache == NULL || psz_cache[0] == '\0' ) + { +#ifdef _WIN32 + char psz_home[PATH_MAX]; + + /* Cache our keys in + * C:\Documents and Settings\$USER\Application Data\dvdcss\ */ + if (SHGetFolderPathA (NULL, CSIDL_APPDATA | CSIDL_FLAG_CREATE, + NULL, SHGFP_TYPE_CURRENT, psz_home ) == S_OK) + { + snprintf( dvdcss->psz_cachefile, PATH_MAX, "%s\\dvdcss", psz_home ); + dvdcss->psz_cachefile[PATH_MAX - 1] = '\0'; + psz_cache = dvdcss->psz_cachefile; + } +#else +#ifdef __ANDROID__ + /* $HOME is not writable on __ANDROID__ so we have to create a custom + * directory in userland */ + char *psz_home = "/sdcard/Android/data/org.videolan.dvdcss"; + + int i_ret = exists_or_mkdir( psz_home, 0755 ); + if( i_ret < 0 && errno != EEXIST ) + { + print_error( dvdcss, "failed creating home directory" ); + psz_home = NULL; + } +#else + char *psz_home = NULL; +#ifdef HAVE_PWD_H + struct passwd *p_pwd; + + /* Try looking in password file for home dir. */ + p_pwd = getpwuid(getuid()); + if( p_pwd && p_pwd->pw_dir && p_pwd->pw_dir[ 0 ] ) + { + psz_home = p_pwd->pw_dir; + } +#endif /* HAVE_PWD_H */ + +#endif /* __ANDROID__ */ + + if( psz_home == NULL ) + { + psz_home = getenv( "HOME" ); + } + + /* Cache our keys in ${HOME}/.dvdcss/ */ + if( psz_home && psz_home[ 0 ] ) + { + int home_pos = 0; + +#ifdef __OS2__ + if( *psz_home == '/' || *psz_home == '\\') + { + const char *psz_unixroot = getenv("UNIXROOT"); + + if( psz_unixroot && + psz_unixroot[0] && + psz_unixroot[1] == ':' && + psz_unixroot[2] == '\0') + { + strcpy( dvdcss->psz_cachefile, psz_unixroot ); + home_pos = 2; + } + } +#endif /* __OS2__ */ + snprintf( dvdcss->psz_cachefile + home_pos, PATH_MAX - home_pos, + "%s/.dvdcss", psz_home ); + dvdcss->psz_cachefile[PATH_MAX - 1] = '\0'; + psz_cache = dvdcss->psz_cachefile; + } +#endif /* ! defined( _WIN32 ) */ + } + else + { + strncpy( dvdcss->psz_cachefile, psz_cache, PATH_MAX ); + dvdcss->psz_cachefile[PATH_MAX - 1] = '\0'; + } + + /* Check that there is enough space for the cache directory path and the + * block filename. The +1s are path separators. */ + if( psz_cache && strlen( psz_cache ) + 1 + DISC_TITLE_LENGTH + 1 + + MANUFACTURING_DATE_LENGTH + 1 + STRING_KEY_SIZE + 1 + + sizeof(CACHE_TAG_NAME) > PATH_MAX ) + { + print_error( dvdcss, "cache directory name is too long" ); + return -1; + } + return 0; +} + +static int init_cache_dir( dvdcss_t dvdcss ) +{ + static const char psz_tag[] = + "Signature: 8a477f597d28d172789f06886806bc55\r\n" + "# This file is a cache directory tag created by libdvdcss.\r\n" + "# For information about cache directory tags, see:\r\n" + "# http://www.brynosaurus.com/cachedir/\r\n"; + char psz_tagfile[PATH_MAX]; + int i_fd, i_ret; + + i_ret = exists_or_mkdir( dvdcss->psz_cachefile, 0755 ); + if( i_ret < 0 && errno != EEXIST ) + { + print_error( dvdcss, "failed creating cache directory '%s'", dvdcss->psz_cachefile ); + dvdcss->psz_cachefile[0] = '\0'; + return -1; + } + + i_ret = snprintf( psz_tagfile, PATH_MAX, "%s/" CACHE_TAG_NAME, + dvdcss->psz_cachefile ); + if ( i_ret < 0 || i_ret >= PATH_MAX) + { + if ( i_ret < 0) + print_error( dvdcss, "failed to compose cache directory tag path"); + else + print_error( dvdcss, "cache directory tag path too long: %s/" CACHE_TAG_NAME, + dvdcss->psz_cachefile ); + dvdcss->psz_cachefile[0] = '\0'; + return -1; + } + + i_fd = open( psz_tagfile, O_RDWR|O_CREAT, 0644 ); + if( i_fd >= 0 ) + { + ssize_t len = strlen(psz_tag); + if( write( i_fd, psz_tag, len ) < len ) + { + print_error( dvdcss, + "Error writing cache directory tag, continuing..\n" ); + } + close( i_fd ); + } + return 0; +} + +static void create_cache_subdir( dvdcss_t dvdcss ) +{ + uint8_t p_sector[DVDCSS_BLOCK_SIZE]; + char psz_key[STRING_KEY_SIZE + 1]; + char *psz_title; + uint8_t *psz_serial; + int i, i_ret; + + /* We read sector 0. If it starts with 0x000001ba (BE), we are + * reading a VOB file, and we should not cache anything. */ + + i_ret = dvdcss->pf_seek( dvdcss, 0 ); + if( i_ret != 0 ) + { + goto error; + } + + i_ret = dvdcss->pf_read( dvdcss, p_sector, 1 ); + if( i_ret != 1 ) + { + goto error; + } + + if( p_sector[0] == 0x00 && p_sector[1] == 0x00 + && p_sector[2] == 0x01 && p_sector[3] == 0xba ) + { + goto error; + } + + /* The data we are looking for is at sector 16 (32768 bytes): + * - offset 40: disc title (32 uppercase chars) + * - offset 813: manufacturing date + serial no (16 digits) */ + + i_ret = dvdcss->pf_seek( dvdcss, INTERESTING_SECTOR ); + if( i_ret != INTERESTING_SECTOR ) + { + goto error; + } + + i_ret = dvdcss->pf_read( dvdcss, p_sector, 1 ); + if( i_ret != 1 ) + { + goto error; + } + + /* Get the disc title */ + psz_title = (char *)p_sector + DISC_TITLE_OFFSET; + psz_title[DISC_TITLE_LENGTH] = '\0'; + + for( i = 0; i < DISC_TITLE_LENGTH; i++ ) + { + if( psz_title[i] <= ' ' ) + { + psz_title[i] = '\0'; + break; + } + else if( psz_title[i] == '/' || psz_title[i] == '\\' ) + { + psz_title[i] = '-'; + } + } + + /* Get the date + serial */ + psz_serial = p_sector + MANUFACTURING_DATE_OFFSET; + psz_serial[MANUFACTURING_DATE_LENGTH] = '\0'; + + /* Check that all characters are digits, otherwise convert. */ + for( i = 0 ; i < MANUFACTURING_DATE_LENGTH ; i++ ) + { + if( psz_serial[i] < '0' || psz_serial[i] > '9' ) + { + char psz_tmp[MANUFACTURING_DATE_LENGTH + 1]; + sprintf( psz_tmp, + "%.2x%.2x%.2x%.2x%.2x%.2x%.2x%.2x", + psz_serial[0], psz_serial[1], psz_serial[2], + psz_serial[3], psz_serial[4], psz_serial[5], + psz_serial[6], psz_serial[7] ); + memcpy( psz_serial, psz_tmp, MANUFACTURING_DATE_LENGTH ); + break; + } + } + + /* Get disk key, since some discs have the same title, manufacturing + * date and serial number, but different keys. */ + if( dvdcss->b_scrambled ) + { + for( i = 0; i < DVD_KEY_SIZE; i++ ) + { + sprintf( &psz_key[i * 2], "%.2x", dvdcss->css.p_disc_key[i] ); + } + psz_key[STRING_KEY_SIZE] = '\0'; + } + else + { + psz_key[0] = 0; + } + + /* We have a disc name or ID, we can create the cache subdirectory. */ + i = strlen( dvdcss->psz_cachefile ); + i += sprintf( dvdcss->psz_cachefile + i, "/%s-%s-%s", + psz_title, psz_serial, psz_key ); + i_ret = exists_or_mkdir( dvdcss->psz_cachefile, 0755 ); + if( i_ret < 0 && errno != EEXIST ) + { + print_error( dvdcss, "failed creating cache subdirectory" ); + goto error; + } + i += sprintf( dvdcss->psz_cachefile + i, "/"); + + /* Pointer to the filename we will use. */ + dvdcss->psz_block = dvdcss->psz_cachefile + i; + + print_debug( dvdcss, "Content Scrambling System (CSS) key cache dir: %s", + dvdcss->psz_cachefile ); + return; + +error: + dvdcss->psz_cachefile[0] = '\0'; +} + +static void init_cache( dvdcss_t dvdcss ) +{ + /* Set CSS key cache directory. */ + int i_ret = set_cache_directory( dvdcss ); + if ( i_ret < 0 ) + { + return; + } + + /* If the cache is enabled, initialize the cache directory. */ + i_ret = init_cache_dir( dvdcss ); + if ( i_ret < 0 ) + { + return; + } + + /* If the cache is enabled, create a DVD-specific subdirectory. */ + create_cache_subdir( dvdcss ); +} + +/** + * \brief Open a DVD device or directory and return a dvdcss instance. + * + * \param psz_target a string containing the target name, for instance + * "/dev/hdc" or "E:" + * \return a handle to a dvdcss instance or NULL on error. + * + * Initialize the \e libdvdcss library, open the requested DVD device or + * directory, and return a handle to be used for all subsequent \e libdvdcss + * calls. \e libdvdcss checks whether ioctls can be performed on the disc, + * and when possible, the disc key is retrieved. + */ +LIBDVDCSS_EXPORT dvdcss_t dvdcss_open ( const char *psz_target ) +{ + return dvdcss_open_common( psz_target, NULL, NULL ); +} + +/** + * \brief Open a DVD device using dvdcss_stream_cb. + * + * \param p_stream a private handle used by p_stream_cb + * \param p_stream_cb a struct containing seek and read functions + * \return a handle to a dvdcss instance or NULL on error. + * + * \see dvdcss_open() + */ +LIBDVDCSS_EXPORT dvdcss_t dvdcss_open_stream ( void *p_stream, + dvdcss_stream_cb *p_stream_cb ) +{ + return dvdcss_open_common( NULL, p_stream, p_stream_cb ); +} + +static dvdcss_t dvdcss_open_common ( const char *psz_target, void *p_stream, + dvdcss_stream_cb *p_stream_cb ) +{ + int i_ret; + + /* Allocate the library structure. */ + dvdcss_t dvdcss = malloc( sizeof( *dvdcss ) ); + if( dvdcss == NULL ) + { + return NULL; + } + + if( psz_target == NULL && + ( p_stream == NULL || p_stream_cb == NULL ) ) + { + dvdcss->psz_device = NULL; + goto error; + } + + /* Initialize structure with default values. */ + dvdcss->i_fd = -1; + dvdcss->i_pos = 0; + dvdcss->p_titles = NULL; + dvdcss->psz_device = psz_target ? strdup( psz_target ) : NULL; + dvdcss->psz_error = "no error"; + dvdcss->i_method = DVDCSS_METHOD_KEY; + dvdcss->psz_cachefile[0] = '\0'; + + dvdcss->p_stream = p_stream; + dvdcss->p_stream_cb = p_stream_cb; + + /* Set library verbosity from DVDCSS_VERBOSE environment variable. */ + set_verbosity( dvdcss ); + + /* Set DVD access method from DVDCSS_METHOD environment variable. */ + if( set_access_method( dvdcss ) < 0 ) + { + goto error; + } + + /* Open device. */ + dvdcss_check_device( dvdcss ); + i_ret = dvdcss_open_device( dvdcss ); + if( i_ret < 0 ) + { + goto error; + } + + dvdcss->b_scrambled = 1; /* Assume the worst */ + dvdcss->b_ioctls = dvdcss_use_ioctls( dvdcss ); + + if( dvdcss->b_ioctls ) + { + i_ret = dvdcss_test( dvdcss ); + + if( i_ret == -3 ) + { + print_debug( dvdcss, "scrambled disc on a region-free RPC-II " + "drive: possible failure, but continuing " + "anyway" ); + } + else if( i_ret < 0 ) + { + /* Disable the CSS ioctls and hope that it works? */ + print_debug( dvdcss, + "could not check whether the disc was scrambled" ); + dvdcss->b_ioctls = 0; + } + else + { + print_debug( dvdcss, i_ret ? "disc is scrambled" + : "disc is unscrambled" ); + dvdcss->b_scrambled = i_ret; + } + } + + memset( dvdcss->css.p_disc_key, 0, DVD_KEY_SIZE ); + /* If disc is CSS protected and the ioctls work, authenticate the drive */ + if( dvdcss->b_scrambled && dvdcss->b_ioctls ) + { + i_ret = dvdcss_disckey( dvdcss ); + + if( i_ret < 0 ) + { + print_debug( dvdcss, "could not get disc key" ); + } + } + + init_cache( dvdcss ); + + /* Seek to the beginning, just for safety. */ + dvdcss->pf_seek( dvdcss, 0 ); + + return dvdcss; + +error: + free( dvdcss->psz_device ); + free( dvdcss ); + return NULL; +} + +/** + * \brief Return a string containing the last error that occurred in the + * given \e libdvdcss instance. + * + * \param dvdcss a \e libdvdcss instance + * \return a NULL-terminated string containing the last error message. + * + * Return a string with the last error message produced by \e libdvdcss. + * Useful to conveniently format error messages in external applications. + */ +LIBDVDCSS_EXPORT const char * dvdcss_error ( const dvdcss_t dvdcss ) +{ + return dvdcss->psz_error; +} + +/** + * \brief Seek in the disc and change the current key if requested. + * + * \param dvdcss a \e libdvdcss instance + * \param i_blocks an absolute block offset to seek to + * \param i_flags #DVDCSS_NOFLAGS, optionally ORed with one of #DVDCSS_SEEK_KEY + * or #DVDCSS_SEEK_MPEG + * \return the new position in blocks or a negative value in case an error + * happened. + * + * This function seeks to the requested position, in logical blocks. + * + * You typically set \p i_flags to #DVDCSS_NOFLAGS when seeking in a .IFO. + * + * If #DVDCSS_SEEK_MPEG is specified in \p i_flags and if \e libdvdcss finds it + * reasonable to do so (i.e., if the dvdcss method is not "title"), the current + * title key will be checked and a new one will be calculated if necessary. + * This flag is typically used when reading data from a .VOB file. + * + * If #DVDCSS_SEEK_KEY is specified, the title key will always be checked, + * even with the "title" method. This flag is typically used when seeking + * in a new title. + */ +LIBDVDCSS_EXPORT int dvdcss_seek ( dvdcss_t dvdcss, int i_blocks, int i_flags ) +{ + /* title cracking method is too slow to be used at each seek */ + if( ( ( i_flags & DVDCSS_SEEK_MPEG ) + && ( dvdcss->i_method != DVDCSS_METHOD_TITLE ) ) + || ( i_flags & DVDCSS_SEEK_KEY ) ) + { + /* check the title key */ + if( dvdcss_title( dvdcss, i_blocks ) ) + { + return -1; + } + } + + return dvdcss->pf_seek( dvdcss, i_blocks ); +} + +/** + * \brief Read from the disc and decrypt data if requested. + * + * \param dvdcss a \e libdvdcss instance + * \param p_buffer a buffer that will contain the data read from the disc + * \param i_blocks the amount of blocks to read + * \param i_flags #DVDCSS_NOFLAGS, optionally ORed with #DVDCSS_READ_DECRYPT + * \return the amount of blocks read or a negative value in case an + * error happened. + * + * Read \p i_blocks logical blocks from the DVD. + * + * You typically set \p i_flags to #DVDCSS_NOFLAGS when reading data from a + * .IFO file on the DVD. + * + * If #DVDCSS_READ_DECRYPT is specified in \p i_flags, dvdcss_read() will + * automatically decrypt scrambled sectors. This flag is typically used when + * reading data from a .VOB file on the DVD. It has no effect on unscrambled + * discs or unscrambled sectors and can be safely used on those. + * + * \warning dvdcss_read() expects to be able to write \p i_blocks * + * #DVDCSS_BLOCK_SIZE bytes into \p p_buffer. + */ +LIBDVDCSS_EXPORT int dvdcss_read ( dvdcss_t dvdcss, void *p_buffer, + int i_blocks, + int i_flags ) +{ + uint8_t *_p_buffer = p_buffer; + int i_ret, i_index; + + i_ret = dvdcss->pf_read( dvdcss, _p_buffer, i_blocks ); + + if( i_ret <= 0 + || !dvdcss->b_scrambled + || !(i_flags & DVDCSS_READ_DECRYPT) ) + { + return i_ret; + } + + if( ! memcmp( dvdcss->css.p_title_key, "\0\0\0\0\0", 5 ) ) + { + /* For what we believe is an unencrypted title, + * check that there are no encrypted blocks */ + for( i_index = i_ret; i_index; i_index-- ) + { + if( _p_buffer[0x14] & 0x30 ) + { + print_error( dvdcss, "no key but found encrypted block" ); + /* Only return the initial range of unscrambled blocks? */ + /* or fail completely? return 0; */ + break; + } + _p_buffer = _p_buffer + DVDCSS_BLOCK_SIZE; + } + } + else + { + /* Decrypt the blocks we managed to read */ + for( i_index = i_ret; i_index; i_index-- ) + { + dvdcss_unscramble( dvdcss->css.p_title_key, _p_buffer ); + _p_buffer[0x14] &= 0x8f; + _p_buffer = _p_buffer + DVDCSS_BLOCK_SIZE; + } + } + + return i_ret; +} + +/** + * \brief Read data from the disc into multiple buffers and decrypt data if + * requested. + * + * \param dvdcss a \e libdvdcss instance + * \param p_iovec a pointer to an array of iovec structures that will contain + * the data read from the disc + * \param i_blocks the amount of blocks to read + * \param i_flags #DVDCSS_NOFLAGS, optionally ORed with #DVDCSS_READ_DECRYPT + * \return the amount of blocks read or a negative value in case an + * error happened. + * + * Read \p i_blocks logical blocks from the DVD and write them + * to an array of iovec structures. + * + * You typically set \p i_flags to #DVDCSS_NOFLAGS when reading data from a + * .IFO file on the DVD. + * + * If #DVDCSS_READ_DECRYPT is specified in \p i_flags, dvdcss_readv() will + * automatically decrypt scrambled sectors. This flag is typically used when + * reading data from a .VOB file on the DVD. It has no effect on unscrambled + * discs or unscrambled sectors and can be safely used on those. + * + * \warning dvdcss_readv() expects to be able to write \p i_blocks * + * #DVDCSS_BLOCK_SIZE bytes into the buffers pointed by \p p_iovec. + * Moreover, all iov_len members of the iovec structures should be + * multiples of #DVDCSS_BLOCK_SIZE. + */ +LIBDVDCSS_EXPORT int dvdcss_readv ( dvdcss_t dvdcss, void *p_iovec, + int i_blocks, + int i_flags ) +{ + struct iovec *_p_iovec = p_iovec; + int i_ret, i_index; + void *iov_base; + size_t iov_len; + + i_ret = dvdcss->pf_readv( dvdcss, _p_iovec, i_blocks ); + + if( i_ret <= 0 + || !dvdcss->b_scrambled + || !(i_flags & DVDCSS_READ_DECRYPT) ) + { + return i_ret; + } + + /* Initialize loop for decryption */ + iov_base = _p_iovec->iov_base; + iov_len = _p_iovec->iov_len; + + /* Decrypt the blocks we managed to read */ + for( i_index = i_ret; i_index; i_index-- ) + { + /* Check that iov_len is a multiple of 2048 */ + if( iov_len & 0x7ff ) + { + return -1; + } + + while( iov_len == 0 ) + { + _p_iovec++; + iov_base = _p_iovec->iov_base; + iov_len = _p_iovec->iov_len; + } + + dvdcss_unscramble( dvdcss->css.p_title_key, iov_base ); + ((uint8_t*)iov_base)[0x14] &= 0x8f; + + iov_base = (uint8_t*)iov_base + DVDCSS_BLOCK_SIZE; + iov_len -= DVDCSS_BLOCK_SIZE; + } + + return i_ret; +} + +/** + * \brief Clean up library state and structures. + * + * \param dvdcss a \e libdvdcss instance + * \return zero in case of success, a negative value otherwise. + * + * Close the DVD device and free all the memory allocated by \e libdvdcss. + * On return, the #dvdcss_t is invalidated and may not be used again. + */ +LIBDVDCSS_EXPORT int dvdcss_close ( dvdcss_t dvdcss ) +{ + struct dvd_title *p_title; + int i_ret; + + /* Free our list of keys */ + p_title = dvdcss->p_titles; + while( p_title ) + { + struct dvd_title *p_tmptitle = p_title->p_next; + free( p_title ); + p_title = p_tmptitle; + } + + i_ret = dvdcss_close_device( dvdcss ); + + free( dvdcss->psz_device ); + free( dvdcss ); + + return i_ret; +} + +/** + * \brief Detect whether or not a DVD is scrambled + * + * \param dvdcss a \e libdvdcss instance. + * \return 1 if the DVD is scrambled, 0 otherwise. + */ +LIBDVDCSS_EXPORT int dvdcss_is_scrambled ( dvdcss_t dvdcss ) +{ + return dvdcss->b_scrambled; +} diff --git a/src/libdvdcss.h b/src/libdvdcss.h new file mode 100644 index 0000000..93668e0 --- /dev/null +++ b/src/libdvdcss.h @@ -0,0 +1,88 @@ +/***************************************************************************** + * libdvdcss.h: private DVD reading library data + ***************************************************************************** + * Copyright (C) 1998-2001 VideoLAN + * + * Authors: Stéphane Borel + * Sam Hocevar + * + * libdvdcss 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. + * + * libdvdcss 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 libdvdcss; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + *****************************************************************************/ + +#ifndef DVDCSS_LIBDVDCSS_H +#define DVDCSS_LIBDVDCSS_H + +#include + +#include "dvdcss/dvdcss.h" +#include "css.h" +#include "device.h" + +/***************************************************************************** + * libdvdcss method: used like init flags + *****************************************************************************/ +enum dvdcss_method { + DVDCSS_METHOD_KEY, + DVDCSS_METHOD_DISC, + DVDCSS_METHOD_TITLE, +}; +/***************************************************************************** + * The libdvdcss structure + *****************************************************************************/ +struct dvdcss_s +{ + /* File descriptor */ + char * psz_device; + int i_fd; + int i_pos; + + /* File handling */ + int ( * pf_seek ) ( dvdcss_t, int ); + int ( * pf_read ) ( dvdcss_t, void *, int ); + int ( * pf_readv ) ( dvdcss_t, const struct iovec *, int ); + + /* Decryption stuff */ + enum dvdcss_method i_method; + struct css css; + int b_ioctls; + int b_scrambled; + struct dvd_title *p_titles; + + /* Key cache directory and pointer to the filename */ + char psz_cachefile[PATH_MAX]; + char * psz_block; + + /* Error management */ + const char *psz_error; + int b_errors; + int b_debug; + +#ifdef _WIN32 + int b_file; + char * p_readv_buffer; + int i_readv_buf_size; +#endif /* _WIN32 */ + + void *p_stream; + dvdcss_stream_cb *p_stream_cb; +}; + +/***************************************************************************** + * Functions used across the library + *****************************************************************************/ +void print_error ( dvdcss_t, const char *, ... ); +void print_debug ( const dvdcss_t, const char *, ... ); + +#endif /* DVDCSS_LIBDVDCSS_H */ diff --git a/src/libdvdcss.pc.in b/src/libdvdcss.pc.in new file mode 100644 index 0000000..517e861 --- /dev/null +++ b/src/libdvdcss.pc.in @@ -0,0 +1,10 @@ +prefix=@prefix@ +exec_prefix=@exec_prefix@ +libdir=@libdir@ +includedir=@includedir@ + +Name: libdvdcss +Description: DVD access and decryption library. +Version: @VERSION@ +Libs: -L${libdir} -ldvdcss +Cflags: -I${includedir} -I${includedir}/dvdcss -- cgit v1.2.3