Adding upstream version 1.4.3.upstream/1.4.3upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

15 files changed, 6287 insertions, 0 deletions

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 <sam@via.ecp.fr>
+ *          Vincent Seguin <seguin@via.ecp.fr>
+ *          Gildas Bazin <gbazin@netcourrier.com>
+ *
+ * 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 <io.h>                                             /* _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 <stef@via.ecp.fr>
+ *          Håkan Hjort <d95hjort@dtek.chalmers.se>
+ *
+ * based on:
+ *  - css-auth by Derek Fawcus <derek@spider.com>
+ *  - DVD CSS ioctls example program by Andrew T. Veliath <andrewtv@usa.net>
+ *  - The Divide and conquer attack by Frank A. Stevenson <frank@funcom.com>
+ *     (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 <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#ifdef HAVE_SYS_PARAM_H
+#   include <sys/param.h>
+#endif
+#ifdef HAVE_UNISTD_H
+#   include <unistd.h>
+#endif
+#include <fcntl.h>
+
+#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 <stef@via.ecp.fr>
+ *
+ * based on:
+ *  - css-auth by Derek Fawcus <derek@spider.com>
+ *  - DVD CSS ioctls example program by Andrew T. Veliath <andrewtv@usa.net>
+ *  - DeCSSPlus by Ethan Hawke
+ *  - The Divide and conquer attack by Frank A. Stevenson <frank@funcom.com>
+ *
+ * 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 <stdint.h>
+
+#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 <stef@via.ecp.fr>
+ *
+ * based on:
+ *  - css-auth by Derek Fawcus <derek@spider.com>
+ *  - DVD CSS ioctls example program by Andrew T. Veliath <andrewtv@usa.net>
+ *  - The Divide and conquer attack by Frank A. Stevenson <frank@funcom.com>
+ *  - 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 <stdint.h>
+
+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 <stef@via.ecp.fr>
+ *          Sam Hocevar <sam@zoy.org>
+ *          Håkan Hjort <d95hjort@dtek.chalmers.se>
+ *
+ * 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 <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#ifdef HAVE_ERRNO_H
+#   include <errno.h>
+#endif
+#include <sys/types.h>
+#include <sys/stat.h>
+#ifdef HAVE_SYS_PARAM_H
+#   include <sys/param.h>
+#endif
+#include <fcntl.h>
+
+#ifdef HAVE_UNISTD_H
+#   include <unistd.h>
+#endif
+
+#ifdef DARWIN_DVD_IOCTL
+#   include <paths.h>
+#   include <CoreFoundation/CoreFoundation.h>
+#   include <IOKit/IOKitLib.h>
+#   include <IOKit/IOBSD.h>
+#   include <IOKit/storage/IOMedia.h>
+#   include <IOKit/storage/IOCDMedia.h>
+#   include <IOKit/storage/IODVDMedia.h>
+#endif
+
+#ifdef __OS2__
+#   define INCL_DOS
+#   define INCL_DOSDEVIOCTL
+#   include <os2.h>
+#   include <io.h>                                              /* setmode() */
+#   include <fcntl.h>                                           /* O_BINARY  */
+#endif
+
+#ifdef _WIN32
+#   include <windows.h>
+#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,
+                          &param, 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 <stef@via.ecp.fr>
+ *          Sam Hocevar <sam@zoy.org>
+ *          Håkan Hjort <d95hjort@dtek.chalmers.se>
+ *
+ * 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 <io.h>                                                 /* read() */
+struct iovec
+{
+    void *iov_base;     /* Pointer to data. */
+    size_t iov_len;     /* Length of data.  */
+};
+#else
+#   include <sys/types.h>
+#   include <sys/uio.h>                                      /* 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 <stef@via.ecp.fr>
+ * \author Sam Hocevar <sam@zoy.org>
+ *
+ * \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 <stdint.h>
+
+#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
+ * <http://www.gnu.org/licenses/>.
+ */
+
+#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
+ * <http://www.gnu.org/licenses/>.
+ */
+
+#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 <sam@zoy.org>
+ *
+ * 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 <stdarg.h>
+#include <stdio.h>
+
+#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 <ltlBeBoy@beosmail.com>
+ *          Sam Hocevar <sam@zoy.org>
+ *          Jon Lech Johansen <jon-vl@nanocrew.net>
+ *          Håkan Hjort <d95hjort@dtek.chalmers.se>
+ *          Eugenio Jarosiewicz <ej0@cise.ufl.edu>
+ *          David Siebörger <drs-videolan@rucus.ru.ac.za>
+ *          Alex Strelnikov <lelik@os2.ru>
+ *          Gildas Bazin <gbazin@netcourrier.com>
+ *
+ * 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 <stdio.h>
+
+#include <string.h>                                    /* memcpy(), memset() */
+#include <sys/types.h>
+
+#if defined( _WIN32 )
+#   include <windows.h>
+#   include <winioctl.h>
+#elif defined ( __OS2__ )
+#   define INCL_DOSFILEMGR
+#   define INCL_DOSDEVICES
+#   define INCL_DOSDEVIOCTL
+#   define INCL_DOSERRORS
+#   include <os2.h>
+#   include <sys/ioctl.h>
+#else
+#   include <netinet/in.h>
+#   include <sys/ioctl.h>
+#endif
+
+#ifdef DVD_STRUCT_IN_SYS_CDIO_H
+#   include <sys/cdio.h>
+#endif
+#ifdef DVD_STRUCT_IN_SYS_DVDIO_H
+#   include <sys/dvdio.h>
+#endif
+#ifdef DVD_STRUCT_IN_LINUX_CDROM_H
+#   include <linux/cdrom.h>
+#endif
+#ifdef DVD_STRUCT_IN_DVD_H
+#   include <dvd.h>
+#endif
+#ifdef __HAIKU__
+#   include <malloc.h>
+#   include <scsi.h>
+#endif
+#ifdef SOLARIS_USCSI
+#   include <dlfcn.h>
+#   include <unistd.h>
+#   include <stropts.h>
+#   include <sys/scsi/scsi_types.h>
+#   include <sys/scsi/impl/uscsi.h>
+#endif
+#ifdef DARWIN_DVD_IOCTL
+#   include <IOKit/storage/IODVDMediaBSDClient.h>
+#endif
+#ifdef __QNXNTO__
+#   include <sys/mman.h>
+#   include <sys/dcmd_cam.h>
+#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 <sam@zoy.org>
+ *
+ * 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 <stdint.h>
+
+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 <windows.h>
+#include <winioctl.h>
+
+#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 <stef@via.ecp.fr>
+ *          Sam Hocevar <sam@zoy.org>
+ *          Håkan Hjort <d95hjort@dtek.chalmers.se>
+ *
+ * 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 <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#ifdef HAVE_SYS_PARAM_H
+#   include <sys/param.h>
+#endif
+#ifdef HAVE_PWD_H
+#   include <pwd.h>
+#endif
+#include <fcntl.h>
+#include <errno.h>
+
+#ifdef HAVE_UNISTD_H
+#   include <unistd.h>
+#endif
+
+#ifdef _WIN32
+#   include <windows.h>
+#   include <shlobj.h>
+#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 <direct.h>
+#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 <stef@via.ecp.fr>
+ *          Sam Hocevar <sam@zoy.org>
+ *
+ * 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 <limits.h>
+
+#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