7 files changed, 522 insertions, 0 deletions

diff --git a/apps/plugins/CATEGORIES b/apps/plugins/CATEGORIES
index 6992ca3ca1..337704dfa3 100644
--- a/apps/plugins/CATEGORIES
+++ b/apps/plugins/CATEGORIES
@@ -99,3 +99,4 @@ wormlet,games
 xobox,games
 zxbox,viewers
 lamp,apps
+md5sum,apps
diff --git a/apps/plugins/SOURCES b/apps/plugins/SOURCES
index 86d7055db2..0be7ccfaa8 100644
--- a/apps/plugins/SOURCES
+++ b/apps/plugins/SOURCES
@@ -150,3 +150,5 @@ invadrox.c
 superdom.c
 #endif
 #endif /* m:robe 500 */
+
+md5sum.c
diff --git a/apps/plugins/lib/SOURCES b/apps/plugins/lib/SOURCES
index c5c3a25e26..775db0587e 100644
--- a/apps/plugins/lib/SOURCES
+++ b/apps/plugins/lib/SOURCES
@@ -42,3 +42,4 @@ helper.c
 #ifdef HAVE_TOUCHPAD
 touchscreen.c
 #endif
+md5.c
diff --git a/apps/plugins/lib/md5.c b/apps/plugins/lib/md5.c
new file mode 100644
index 0000000000..97156634e5
--- /dev/null
+++ b/apps/plugins/lib/md5.c
@@ -0,0 +1,255 @@
+/*****************************************************************************
+ * md5.c: not so strong MD5 hashing
+ *****************************************************************************
+ * Copyright (C) 2004-2005 the VideoLAN team
+ * $Id: cb57f7b6522df0960a924193cfca438c03a92521 $
+ *
+ * Authors: Jon Lech Johansen <jon-vl@nanocrew.net>
+ *          Sam Hocevar <sam@zoy.org>
+ *
+ * Adapted to Rockbox by: Antoine Cellerier <dionoea at videolan dot 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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+ *****************************************************************************/
+
+#include "plugin.h"
+#include "md5.h"
+
+static const struct plugin_api *rb;
+
+void md5_init( const struct plugin_api *api )
+{
+    rb = api;
+}
+
+#ifdef WORDS_BIGENDIAN
+/*****************************************************************************
+ * Reverse: reverse byte order
+ *****************************************************************************/
+static inline void Reverse( uint32_t *p_buffer, int n )
+{
+    int i;
+
+    for( i = 0; i < n; i++ )
+    {
+        p_buffer[ i ] = GetDWLE(&p_buffer[ i ]);
+    }
+}
+#    define REVERSE( p, n ) Reverse( p, n )
+#else
+#    define REVERSE( p, n )
+#endif
+
+#define F1( x, y, z ) ((z) ^ ((x) & ((y) ^ (z))))
+#define F2( x, y, z ) F1((z), (x), (y))
+#define F3( x, y, z ) ((x) ^ (y) ^ (z))
+#define F4( x, y, z ) ((y) ^ ((x) | ~(z)))
+
+#define MD5_DO( f, w, x, y, z, data, s ) \
+    ( w += f(x, y, z) + data,  w = w<<s | w>>(32-s),  w += x )
+
+/*****************************************************************************
+ * DigestMD5: update the MD5 digest with 64 bytes of data
+ *****************************************************************************/
+static void DigestMD5( struct md5_s *p_md5, uint32_t *p_input )
+{
+    uint32_t a, b, c, d;
+
+    REVERSE( p_input, 16 );
+
+    a = p_md5->p_digest[ 0 ];
+    b = p_md5->p_digest[ 1 ];
+    c = p_md5->p_digest[ 2 ];
+    d = p_md5->p_digest[ 3 ];
+
+    MD5_DO( F1, a, b, c, d, p_input[  0 ] + 0xd76aa478,  7 );
+    MD5_DO( F1, d, a, b, c, p_input[  1 ] + 0xe8c7b756, 12 );
+    MD5_DO( F1, c, d, a, b, p_input[  2 ] + 0x242070db, 17 );
+    MD5_DO( F1, b, c, d, a, p_input[  3 ] + 0xc1bdceee, 22 );
+    MD5_DO( F1, a, b, c, d, p_input[  4 ] + 0xf57c0faf,  7 );
+    MD5_DO( F1, d, a, b, c, p_input[  5 ] + 0x4787c62a, 12 );
+    MD5_DO( F1, c, d, a, b, p_input[  6 ] + 0xa8304613, 17 );
+    MD5_DO( F1, b, c, d, a, p_input[  7 ] + 0xfd469501, 22 );
+    MD5_DO( F1, a, b, c, d, p_input[  8 ] + 0x698098d8,  7 );
+    MD5_DO( F1, d, a, b, c, p_input[  9 ] + 0x8b44f7af, 12 );
+    MD5_DO( F1, c, d, a, b, p_input[ 10 ] + 0xffff5bb1, 17 );
+    MD5_DO( F1, b, c, d, a, p_input[ 11 ] + 0x895cd7be, 22 );
+    MD5_DO( F1, a, b, c, d, p_input[ 12 ] + 0x6b901122,  7 );
+    MD5_DO( F1, d, a, b, c, p_input[ 13 ] + 0xfd987193, 12 );
+    MD5_DO( F1, c, d, a, b, p_input[ 14 ] + 0xa679438e, 17 );
+    MD5_DO( F1, b, c, d, a, p_input[ 15 ] + 0x49b40821, 22 );
+
+    MD5_DO( F2, a, b, c, d, p_input[  1 ] + 0xf61e2562,  5 );
+    MD5_DO( F2, d, a, b, c, p_input[  6 ] + 0xc040b340,  9 );
+    MD5_DO( F2, c, d, a, b, p_input[ 11 ] + 0x265e5a51, 14 );
+    MD5_DO( F2, b, c, d, a, p_input[  0 ] + 0xe9b6c7aa, 20 );
+    MD5_DO( F2, a, b, c, d, p_input[  5 ] + 0xd62f105d,  5 );
+    MD5_DO( F2, d, a, b, c, p_input[ 10 ] + 0x02441453,  9 );
+    MD5_DO( F2, c, d, a, b, p_input[ 15 ] + 0xd8a1e681, 14 );
+    MD5_DO( F2, b, c, d, a, p_input[  4 ] + 0xe7d3fbc8, 20 );
+    MD5_DO( F2, a, b, c, d, p_input[  9 ] + 0x21e1cde6,  5 );
+    MD5_DO( F2, d, a, b, c, p_input[ 14 ] + 0xc33707d6,  9 );
+    MD5_DO( F2, c, d, a, b, p_input[  3 ] + 0xf4d50d87, 14 );
+    MD5_DO( F2, b, c, d, a, p_input[  8 ] + 0x455a14ed, 20 );
+    MD5_DO( F2, a, b, c, d, p_input[ 13 ] + 0xa9e3e905,  5 );
+    MD5_DO( F2, d, a, b, c, p_input[  2 ] + 0xfcefa3f8,  9 );
+    MD5_DO( F2, c, d, a, b, p_input[  7 ] + 0x676f02d9, 14 );
+    MD5_DO( F2, b, c, d, a, p_input[ 12 ] + 0x8d2a4c8a, 20 );
+
+    MD5_DO( F3, a, b, c, d, p_input[  5 ] + 0xfffa3942,  4 );
+    MD5_DO( F3, d, a, b, c, p_input[  8 ] + 0x8771f681, 11 );
+    MD5_DO( F3, c, d, a, b, p_input[ 11 ] + 0x6d9d6122, 16 );
+    MD5_DO( F3, b, c, d, a, p_input[ 14 ] + 0xfde5380c, 23 );
+    MD5_DO( F3, a, b, c, d, p_input[  1 ] + 0xa4beea44,  4 );
+    MD5_DO( F3, d, a, b, c, p_input[  4 ] + 0x4bdecfa9, 11 );
+    MD5_DO( F3, c, d, a, b, p_input[  7 ] + 0xf6bb4b60, 16 );
+    MD5_DO( F3, b, c, d, a, p_input[ 10 ] + 0xbebfbc70, 23 );
+    MD5_DO( F3, a, b, c, d, p_input[ 13 ] + 0x289b7ec6,  4 );
+    MD5_DO( F3, d, a, b, c, p_input[  0 ] + 0xeaa127fa, 11 );
+    MD5_DO( F3, c, d, a, b, p_input[  3 ] + 0xd4ef3085, 16 );
+    MD5_DO( F3, b, c, d, a, p_input[  6 ] + 0x04881d05, 23 );
+    MD5_DO( F3, a, b, c, d, p_input[  9 ] + 0xd9d4d039,  4 );
+    MD5_DO( F3, d, a, b, c, p_input[ 12 ] + 0xe6db99e5, 11 );
+    MD5_DO( F3, c, d, a, b, p_input[ 15 ] + 0x1fa27cf8, 16 );
+    MD5_DO( F3, b, c, d, a, p_input[  2 ] + 0xc4ac5665, 23 );
+
+    MD5_DO( F4, a, b, c, d, p_input[  0 ] + 0xf4292244,  6 );
+    MD5_DO( F4, d, a, b, c, p_input[  7 ] + 0x432aff97, 10 );
+    MD5_DO( F4, c, d, a, b, p_input[ 14 ] + 0xab9423a7, 15 );
+    MD5_DO( F4, b, c, d, a, p_input[  5 ] + 0xfc93a039, 21 );
+    MD5_DO( F4, a, b, c, d, p_input[ 12 ] + 0x655b59c3,  6 );
+    MD5_DO( F4, d, a, b, c, p_input[  3 ] + 0x8f0ccc92, 10 );
+    MD5_DO( F4, c, d, a, b, p_input[ 10 ] + 0xffeff47d, 15 );
+    MD5_DO( F4, b, c, d, a, p_input[  1 ] + 0x85845dd1, 21 );
+    MD5_DO( F4, a, b, c, d, p_input[  8 ] + 0x6fa87e4f,  6 );
+    MD5_DO( F4, d, a, b, c, p_input[ 15 ] + 0xfe2ce6e0, 10 );
+    MD5_DO( F4, c, d, a, b, p_input[  6 ] + 0xa3014314, 15 );
+    MD5_DO( F4, b, c, d, a, p_input[ 13 ] + 0x4e0811a1, 21 );
+    MD5_DO( F4, a, b, c, d, p_input[  4 ] + 0xf7537e82,  6 );
+    MD5_DO( F4, d, a, b, c, p_input[ 11 ] + 0xbd3af235, 10 );
+    MD5_DO( F4, c, d, a, b, p_input[  2 ] + 0x2ad7d2bb, 15 );
+    MD5_DO( F4, b, c, d, a, p_input[  9 ] + 0xeb86d391, 21 );
+
+    p_md5->p_digest[ 0 ] += a;
+    p_md5->p_digest[ 1 ] += b;
+    p_md5->p_digest[ 2 ] += c;
+    p_md5->p_digest[ 3 ] += d;
+}
+
+/*****************************************************************************
+ * InitMD5: initialise an MD5 message
+ *****************************************************************************
+ * The MD5 message-digest algorithm is described in RFC 1321
+ *****************************************************************************/
+void InitMD5( struct md5_s *p_md5 )
+{
+    p_md5->p_digest[ 0 ] = 0x67452301;
+    p_md5->p_digest[ 1 ] = 0xefcdab89;
+    p_md5->p_digest[ 2 ] = 0x98badcfe;
+    p_md5->p_digest[ 3 ] = 0x10325476;
+
+    rb->memset( p_md5->p_data, 0, 64 );
+    p_md5->i_bits = 0;
+}
+
+/*****************************************************************************
+ * AddMD5: add i_len bytes to an MD5 message
+ *****************************************************************************/
+void AddMD5( struct md5_s *p_md5, const void *p_src, size_t i_len )
+{
+    unsigned int i_current; /* Current bytes in the spare buffer */
+    size_t i_offset = 0;
+
+    i_current = (p_md5->i_bits / 8) & 63;
+
+    p_md5->i_bits += 8 * i_len;
+
+    /* If we can complete our spare buffer to 64 bytes, do it and add the
+     * resulting buffer to the MD5 message */
+    if( i_len >= (64 - i_current) )
+    {
+        rb->memcpy( ((uint8_t *)p_md5->p_data) + i_current, p_src,
+                (64 - i_current) );
+        DigestMD5( p_md5, p_md5->p_data );
+
+        i_offset += (64 - i_current);
+        i_len -= (64 - i_current);
+        i_current = 0;
+    }
+
+    /* Add as many entire 64 bytes blocks as we can to the MD5 message */
+    while( i_len >= 64 )
+    {
+        uint32_t p_tmp[ 16 ];
+        rb->memcpy( p_tmp, ((const uint8_t *)p_src) + i_offset, 64 );
+        DigestMD5( p_md5, p_tmp );
+        i_offset += 64;
+        i_len -= 64;
+    }
+
+    /* Copy our remaining data to the message's spare buffer */
+    rb->memcpy( ((uint8_t *)p_md5->p_data) + i_current,
+                ((const uint8_t *)p_src) + i_offset, i_len );
+}
+
+/*****************************************************************************
+ * EndMD5: finish an MD5 message
+ *****************************************************************************
+ * This function adds adequate padding to the end of the message, and appends
+ * the bit count so that we end at a block boundary.
+ *****************************************************************************/
+void EndMD5( struct md5_s *p_md5 )
+{
+    unsigned int i_current;
+
+    i_current = (p_md5->i_bits / 8) & 63;
+
+    /* Append 0x80 to our buffer. No boundary check because the temporary
+     * buffer cannot be full, otherwise AddMD5 would have emptied it. */
+    ((uint8_t *)p_md5->p_data)[ i_current++ ] = 0x80;
+
+    /* If less than 8 bytes are available at the end of the block, complete
+     * this 64 bytes block with zeros and add it to the message. We'll add
+     * our length at the end of the next block. */
+    if( i_current > 56 )
+    {
+        rb->memset( ((uint8_t *)p_md5->p_data) + i_current, 0, (64 - i_current) );
+        DigestMD5( p_md5, p_md5->p_data );
+        i_current = 0;
+    }
+
+    /* Fill the unused space in our last block with zeroes and put the
+     * message length at the end. */
+    rb->memset( ((uint8_t *)p_md5->p_data) + i_current, 0, (56 - i_current) );
+    p_md5->p_data[ 14 ] = p_md5->i_bits & 0xffffffff;
+    p_md5->p_data[ 15 ] = (p_md5->i_bits >> 32);
+    REVERSE( &p_md5->p_data[ 14 ], 2 );
+
+    DigestMD5( p_md5, p_md5->p_data );
+}
+
+void psz_md5_hash( char *psz, struct md5_s *md5_s )
+{
+    int i;
+    for ( i = 0; i < 4; i++ )
+    {
+        rb->snprintf( &psz[8*i], 9, "%02x%02x%02x%02x",
+            md5_s->p_digest[i] & 0xff,
+            ( md5_s->p_digest[i] >> 8 ) & 0xff,
+            ( md5_s->p_digest[i] >> 16 ) & 0xff,
+            md5_s->p_digest[i] >> 24
+        );
+    }
+}
diff --git a/apps/plugins/lib/md5.h b/apps/plugins/lib/md5.h
new file mode 100644
index 0000000000..e19c749664
--- /dev/null
+++ b/apps/plugins/lib/md5.h
@@ -0,0 +1,56 @@
+/*****************************************************************************
+ * vlc_md5.h: MD5 hash
+ *****************************************************************************
+ * Copyright (C) 2004-2005 the VideoLAN team
+ * $Id: 46f10f01439edbcc8bad45673cc302039b76dd5b $
+ *
+ * Authors: Jon Lech Johansen <jon-vl@nanocrew.net>
+ *          Sam Hocevar <sam@zoy.org>
+ *
+ * Adapted to Rockbox by: Antoine Cellerier <dionoea at videolan dot 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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+ *****************************************************************************/
+
+#ifndef _VLC_MD5_H
+# define _VLC_MD5_H
+
+void md5_init( const struct plugin_api * );
+
+/*****************************************************************************
+ * md5_s: MD5 message structure
+ *****************************************************************************
+ * This structure stores the static information needed to compute an MD5
+ * hash. It has an extra data buffer to allow non-aligned writes.
+ *****************************************************************************/
+struct md5_s
+{
+    uint64_t i_bits;      /* Total written bits */
+    uint32_t p_digest[4]; /* The MD5 digest */
+    uint32_t p_data[16];  /* Buffer to cache non-aligned writes */
+};
+
+void InitMD5( struct md5_s * );
+void AddMD5( struct md5_s *, const void *, size_t );
+void EndMD5( struct md5_s * );
+
+/**
+ * Returns a char representation of the md5 hash, as shown by UNIX md5 or
+ * md5sum tools.
+ */
+#define MD5_STRING_LENGTH 32
+void psz_md5_hash( char *, struct md5_s * );
+
+#endif
diff --git a/apps/plugins/md5sum.c b/apps/plugins/md5sum.c
new file mode 100644
index 0000000000..6845c4c473
--- /dev/null
+++ b/apps/plugins/md5sum.c
@@ -0,0 +1,206 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id: $
+ *
+ * Copyright (C) 2008 Antoine Cellerier <dionoea -at- videolan -dot- org>
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include "plugin.h"
+#include "lib/md5.h"
+
+PLUGIN_HEADER
+
+static const struct plugin_api *rb;
+
+int hash( char *string, const char *path )
+{
+    char *buffer[512];
+    ssize_t len;
+    struct md5_s md5;
+    int in = rb->open( path, O_RDONLY );
+    if( in < 0 ) return -1;
+
+    InitMD5( &md5 );
+    while( ( len = rb->read( in, buffer, 512 ) ) > 0 )
+        AddMD5( &md5, buffer, len );
+    EndMD5( &md5 );
+
+    psz_md5_hash( string, &md5 );
+
+    rb->close( in );
+    return 0;
+}
+
+void hash_file( int out, const char *path )
+{
+    char string[MD5_STRING_LENGTH+1];
+    if( hash( string, path ) )
+        rb->write( out, "error", 5 );
+    else
+        rb->write( out, string, MD5_STRING_LENGTH );
+    rb->write( out, " ", 1 );
+    rb->write( out, path, rb->strlen( path ) );
+    rb->write( out, "\n", 1 );
+}
+
+void hash_dir( int out, const char *path );
+void hash_dir( int out, const char *path )
+{
+    DIR *dir;
+    struct dirent *entry;
+
+    dir = rb->opendir( path );
+    if( dir )
+    {
+        while( ( entry = rb->readdir( dir ) ) )
+        {
+            char childpath[MAX_PATH];
+            rb->snprintf( childpath, MAX_PATH, "%s/%s",
+                          path, entry->d_name );
+            if( entry->attribute & ATTR_DIRECTORY )
+            {
+                if( rb->strcmp( entry->d_name, "." )
+                    && rb->strcmp( entry->d_name, ".." ) )
+                {
+                    /* Got a sub directory */
+                    hash_dir( out, childpath );
+                }
+            }
+            else
+            {
+                /* Got a file */
+                hash_file( out, childpath );
+            }
+        }
+        rb->closedir( dir );
+    }
+}
+
+void hash_list( int out, const char *path )
+{
+    int list = rb->open( path, O_RDONLY );
+    char newpath[MAX_PATH];
+    if( list < 0 ) return;
+
+    while( rb->read_line( list, newpath, MAX_PATH ) > 0 )
+    {
+        DIR *dir = rb->opendir( newpath );
+        if( dir )
+        {
+            rb->closedir( dir );
+            hash_dir( out, newpath );
+        }
+        else
+        {
+            hash_file( out, newpath );
+        }
+    }
+
+    rb->close( list );
+}
+
+void hash_check( int out, const char *path )
+{
+    int list = rb->open( path, O_RDONLY );
+    char line[MD5_STRING_LENGTH+1+MAX_PATH+1];
+    int len;
+    if( list < 0 ) return;
+
+    while( ( len = rb->read_line( list, line, MD5_STRING_LENGTH+1+MAX_PATH+1 ) ) > 0 )
+    {
+        const char *filename = rb->strchr( line, ' ' );
+        if( !filename || len < MD5_STRING_LENGTH + 2 )
+        {
+            const char error[] = "Malformed input line ... skipping";
+            rb->write( out, error, rb->strlen( error ) );
+        }
+        else
+        {
+            char string[MD5_STRING_LENGTH+1];
+            filename++;
+            rb->write( out, filename, rb->strlen( filename ) );
+            rb->write( out, ": ", 2 );
+            if( hash( string, filename ) )
+                rb->write( out, "FAILED open or read", 19 );
+            else if( rb->memcmp( line, string, MD5_STRING_LENGTH ) )
+                rb->write( out, "FAILED", 6 );
+            else
+                rb->write( out, "OK", 2 );
+        }
+        rb->write( out, "\n", 1 );
+    }
+}
+
+enum plugin_status plugin_start(const struct plugin_api* api, const void* parameter)
+{
+    const char *arg = (const char *)parameter; /* input file name, if any */
+    int out = -1; /* output file descriptor */
+    char filename[MAX_PATH]; /* output file name */
+
+    md5_init( api );
+    rb = api;
+
+    if( arg && *arg )
+    {
+        const char *ext = rb->strrchr( arg, '.' );
+        DIR *dir;
+        rb->snprintf( filename, MAX_PATH, "%s.md5sum", arg );
+        out = rb->open( filename, O_WRONLY|O_CREAT );
+        if( out < 0 ) return PLUGIN_ERROR;
+
+        if( ext )
+        {
+            if( !rb->strcmp( ext, ".md5" ) || !rb->strcmp( ext, ".md5sum" ) )
+            {
+                /* Lets check the sums */
+                hash_check( out, arg );
+                goto exit;
+            }
+            else if( !rb->strcmp( ext, ".md5list" ) ) /* ugly */
+            {
+                /* Hash listed files */
+                hash_list( out, arg );
+                goto exit;
+            }
+        }
+
+        dir = rb->opendir( arg );
+        if( dir )
+        {
+            api->closedir( dir );
+
+            /* Hash the directory's content recursively */
+            hash_dir( out, arg );
+        }
+        else
+        {
+            /* Hash the file */
+            hash_file( out, arg );
+        }
+    }
+    else
+    {
+        rb->snprintf( filename, MAX_PATH, "/everything.md5sum" );
+        out = rb->open( filename, O_WRONLY|O_CREAT );
+        if( out < 0 ) return PLUGIN_ERROR;
+
+        /* Hash the whole filesystem */
+        hash_dir( out, "/" );
+    }
+
+    exit:
+        rb->close( out );
+        return PLUGIN_OK;
+}
diff --git a/apps/plugins/viewers.config b/apps/plugins/viewers.config
index bfb408c397..c1df1b2e71 100644
--- a/apps/plugins/viewers.config
+++ b/apps/plugins/viewers.config
@@ -41,3 +41,4 @@ colours,apps/text_editor,11
 ssg,games/superdom,-
 link,viewers/shortcuts_view,-
 *,viewers/shortcuts_append,-
+*,apps/md5sum,-