1 files changed, 126 insertions, 0 deletions
diff --git a/test/csstest.c b/test/csstest.c
new file mode 100644
index 0000000..d09565a
--- /dev/null
+++ b/test/csstest.c
@@ -0,0 +1,126 @@
+/* csstest.c - test program for libdvdcss
+ *
+ * Sam Hocevar <sam@zoy.org> - June 2001
+ *   Updated on Nov 13th 2001 for libdvdcss version 1.0.0
+ *   Additional error checks on Aug 9th 2002
+ *   Aligned data reads on Jan 28th 2003
+ *
+ * This piece of code is public domain */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <dvdcss/dvdcss.h>
+
+static int  isscrambled( unsigned char * );
+static void dumpsector ( unsigned char * );
+
+int main( int i_argc, char *ppsz_argv[] )
+{
+    dvdcss_t       dvdcss;
+    unsigned char  p_data[ DVDCSS_BLOCK_SIZE * 2 ];
+    unsigned char *p_buffer;
+    unsigned int   i_sector;
+    int            i_ret;
+
+    /* Check for 2 arguments */
+    if( i_argc != 3 )
+    {
+        printf( "usage: %s <target> <sector>\n", ppsz_argv[0] );
+        printf( "examples:\n" );
+        printf( "  %s /dev/hdc 1024\n", ppsz_argv[0] );
+        printf( "  %s D: 1024\n", ppsz_argv[0] );
+        printf( "  %s scrambledfile.vob 1024\n", ppsz_argv[0] );
+        return -1;
+    }
+
+    /* Save the requested sector */
+    i_sector = atoi( ppsz_argv[2] );
+
+    /* Initialize libdvdcss */
+    dvdcss = dvdcss_open( ppsz_argv[1] );
+    if( dvdcss == NULL )
+    {
+        printf( "argh ! couldn't open DVD (%s)\n", ppsz_argv[1] );
+        return -1;
+    }
+
+    /* Align our read buffer */
+    p_buffer = p_data + DVDCSS_BLOCK_SIZE
+                      - ((long int)p_data & (DVDCSS_BLOCK_SIZE-1));
+
+    /* Set the file descriptor at sector i_sector and read one sector */
+    i_ret = dvdcss_seek( dvdcss, i_sector, DVDCSS_NOFLAGS );
+    if( i_ret != (int)i_sector )
+    {
+        printf( "seek failed (%s)\n", dvdcss_error( dvdcss ) );
+        dvdcss_close( dvdcss );
+        return i_ret;
+    }
+
+    i_ret = dvdcss_read( dvdcss, p_buffer, 1, DVDCSS_NOFLAGS );
+    if( i_ret != 1 )
+    {
+        printf( "read failed (%s)\n", dvdcss_error( dvdcss ) );
+        dvdcss_close( dvdcss );
+        return i_ret;
+    }
+
+    /* Print the sector */
+    printf( "requested sector: " );
+    dumpsector( p_buffer );
+
+    /* Check if sector was encrypted */
+    if( isscrambled( p_buffer ) )
+    {
+        /* Set the file descriptor position to the previous location */
+        /* ... and get the appropriate key for this sector */
+        i_ret = dvdcss_seek( dvdcss, i_sector, DVDCSS_SEEK_KEY );
+        if( i_ret != (int)i_sector )
+        {
+            printf( "seek failed (%s)\n", dvdcss_error( dvdcss ) );
+            dvdcss_close( dvdcss );
+            return i_ret;
+        }
+
+        /* Read sector again, and decrypt it on the fly */
+        i_ret = dvdcss_read( dvdcss, p_buffer, 1, DVDCSS_READ_DECRYPT );
+        if( i_ret != 1 )
+        {
+            printf( "read failed (%s)\n", dvdcss_error( dvdcss ) );
+            dvdcss_close( dvdcss );
+            return i_ret;
+        }
+
+        /* Print the decrypted sector */
+        printf( "unscrambled sector: " );
+        dumpsector( p_buffer );
+    }
+    else
+    {
+        printf( "sector is not scrambled\n" );
+    }
+
+    /* Close the device */
+    i_ret = dvdcss_close( dvdcss );
+
+    return i_ret;
+}
+
+/* Check if a sector is scrambled */
+static int isscrambled( unsigned char *p_buffer )
+{
+    return p_buffer[ 0x14 ] & 0x30;
+}
+
+/* Print parts of a 2048 bytes buffer */
+static void dumpsector( unsigned char *p_buffer )
+{
+    int i_amount = 4;
+    for( ; i_amount ; i_amount--, p_buffer++ ) printf( "%.2x", *p_buffer );
+    printf( "..." );
+    i_amount = 22;
+    p_buffer += 200;
+    for( ; i_amount ; i_amount--, p_buffer++ ) printf( "%.2x", *p_buffer );
+    printf( "...\n" );
+}