New md5sum plugin. Open a file, a directory or just launch it from the plugin menu to create an md5sum of the file, the directory's contents or the whole filesystem. If the file's extension is .md5 or .md5sum, it will check the md5 sums in the file instead. If the file's extension is .md5list it will compute md5 sums for all the files listed.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17709 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 206 insertions, 0 deletions

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;
+}