+/*****************************************************************************
+ * dummy_dvdcss.c: Dummy libdvdcss with minimal DVD access.
+ *****************************************************************************
+ * Copyright (C) 2001 VideoLAN
+ * $Id: dummy_dvdcss.c,v 1.1 2001/08/06 13:28:00 sam Exp $
+ *
+ * Authors: Samuel Hocevar <sam@zoy.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
+ *****************************************************************************/
+
+/*****************************************************************************
+ * Preamble
+ *****************************************************************************/
+#include "defs.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/uio.h> /* struct iovec */
+#include <sys/ioctl.h>
+
+#ifdef DVD_STRUCT_IN_LINUX_CDROM_H
+# include <netinet/in.h>
+# include <linux/cdrom.h>
+#else
+# error "building dummy libdvdcss on this system does not make sense !"
+#endif
+
+#include "config.h"
+#include "common.h"
+
+#include "dummy_dvdcss.h"
+
+/*****************************************************************************
+ * Local structure
+ *****************************************************************************/
+struct dvdcss_s
+{
+ /* File descriptor */
+ int i_fd;
+};
+
+/*****************************************************************************
+ * dvdcss_open: initialize library, open a DVD device, crack CSS key
+ *****************************************************************************/
+extern dvdcss_handle dummy_dvdcss_open ( char *psz_target, int i_flags )
+{
+ dvdcss_handle dvdcss;
+ dvd_struct dvd;
+
+ /* Allocate the library structure */
+ dvdcss = malloc( sizeof( struct dvdcss_s ) );
+ if( dvdcss == NULL )
+ {
+ fprintf( stderr, "dvd error: "
+ "dummy libdvdcss could not allocate memory\n" );
+ return NULL;
+ }
+
+ /* Open the device */
+ dvdcss->i_fd = open( psz_target, 0 );
+ if( dvdcss->i_fd < 0 )
+ {
+ fprintf( stderr, "dvd error: "
+ "dummy libdvdcss could not open device\n" );
+ free( dvdcss );
+ return NULL;
+ }
+
+ /* Check for encryption or ioctl failure */
+ dvd.type = DVD_STRUCT_COPYRIGHT;
+ dvd.copyright.layer_num = 0;
+ if( ioctl( dvdcss->i_fd, DVD_READ_STRUCT, &dvd ) != 0
+ || dvd.copyright.cpst )
+ {
+ fprintf( stderr, "dvd error: "
+ "dummy libdvdcss could not decrypt disc\n" );
+ close( dvdcss->i_fd );
+ free( dvdcss );
+ return NULL;
+ }
+
+ return dvdcss;
+}
+
+/*****************************************************************************
+ * dvdcss_error: return the last libdvdcss error message
+ *****************************************************************************/
+extern char * dummy_dvdcss_error ( dvdcss_handle dvdcss )
+{
+ return "unknown error";
+}
+
+/*****************************************************************************
+ * dvdcss_seek: seek into the device
+ *****************************************************************************/
+extern int dummy_dvdcss_seek ( dvdcss_handle dvdcss, int i_blocks )
+{
+ off_t i_read;
+
+ i_read = lseek( dvdcss->i_fd,
+ (off_t)i_blocks * (off_t)DVDCSS_BLOCK_SIZE, SEEK_SET );
+
+ return i_read / DVDCSS_BLOCK_SIZE;
+}
+
+/*****************************************************************************
+ * dvdcss_title: crack the current title key if needed
+ *****************************************************************************/
+extern int dummy_dvdcss_title ( dvdcss_handle dvdcss, int i_block )
+{
+ return 0;
+}
+
+/*****************************************************************************
+ * dvdcss_read: read data from the device, decrypt if requested
+ *****************************************************************************/
+extern int dummy_dvdcss_read ( dvdcss_handle dvdcss, void *p_buffer,
+ int i_blocks,
+ int i_flags )
+{
+ int i_bytes;
+
+ i_bytes = read( dvdcss->i_fd, p_buffer,
+ (size_t)i_blocks * DVDCSS_BLOCK_SIZE );
+
+ return i_bytes / DVDCSS_BLOCK_SIZE;
+}
+
+/*****************************************************************************
+ * dvdcss_readv: read data to an iovec structure, decrypt if reaquested
+ *****************************************************************************/
+extern int dummy_dvdcss_readv ( dvdcss_handle dvdcss, void *p_iovec,
+ int i_blocks,
+ int i_flags )
+{
+ int i_read;
+
+ i_read = readv( dvdcss->i_fd, (struct iovec*)p_iovec, i_blocks );
+
+ return i_read / DVDCSS_BLOCK_SIZE;
+}
+
+/*****************************************************************************
+ * dvdcss_close: close the DVD device and clean up the library
+ *****************************************************************************/
+extern int dummy_dvdcss_close ( dvdcss_handle dvdcss )
+{
+ int i_ret;
+
+ i_ret = close( dvdcss->i_fd );
+
+ if( i_ret < 0 )
+ {
+ return i_ret;
+ }
+
+ free( dvdcss );
+
+ return 0;
+}
+
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