--- /dev/null
+/*****************************************************************************
+ * md5.c: md5 hashing functions
+ *****************************************************************************
+ * Copyright (C) 2010 Antoine Cellerier
+ * $Id$
+ *
+ * Authors: Antoine Cellerier <dionoea at videolan tod 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.
+ *****************************************************************************/
+
+/*****************************************************************************
+ * Preamble
+ *****************************************************************************/
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE
+#endif
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <vlc_common.h>
+#include <vlc_md5.h>
+
+#include <lua.h> /* Low level lua C API */
+#include <lauxlib.h> /* Higher level C API */
+
+#include "../vlc.h"
+#include "../libs.h"
+
+/*****************************************************************************
+ *
+ *****************************************************************************/
+static int vlclua_md5_create( lua_State * );
+static int vlclua_md5_add( lua_State * );
+static int vlclua_md5_end( lua_State * );
+static int vlclua_md5_hash( lua_State * );
+
+static const luaL_Reg vlclua_md5_reg[] = {
+ { "add", vlclua_md5_add },
+ { "end", vlclua_md5_end },
+ { "end_", vlclua_md5_end },
+ { "hash", vlclua_md5_hash },
+ { NULL, NULL }
+};
+
+static int vlclua_md5_create( lua_State *L )
+{
+ if( lua_gettop( L ) )
+ {
+ /* If optional first argument is given, and it's a string, just
+ * return the string's hash */
+ const char *psz_str = luaL_checkstring( L, 1 );
+ struct md5_s md5;
+ InitMD5( &md5 );
+ AddMD5( &md5, psz_str, strlen( psz_str ) );
+ EndMD5( &md5 );
+ char *psz_hash = psz_md5_hash( &md5 );
+ lua_pushstring( L, psz_hash );
+ free( psz_hash );
+ return 1;
+ }
+
+ struct md5_s *p_md5 = lua_newuserdata( L, sizeof( struct md5_s ) );
+ InitMD5( p_md5 );
+
+ if( luaL_newmetatable( L, "md5" ) )
+ {
+ lua_newtable( L );
+ luaL_register( L, NULL, vlclua_md5_reg );
+ lua_setfield( L, -2, "__index" );
+ }
+
+ lua_setmetatable( L, -2 );
+ return 1;
+}
+
+static int vlclua_md5_add( lua_State *L )
+{
+ struct md5_s *p_md5 = (struct md5_s *)luaL_checkudata( L, 1, "md5" );
+ if( !lua_isstring( L, 2 ) )
+ luaL_error( L, "2nd argument should be a string" );
+ size_t i_len = 0;
+ const char *psz_str = lua_tolstring( L, 2, &i_len );
+ if( !psz_str )
+ vlclua_error( L );
+
+ AddMD5( p_md5, psz_str, i_len );
+
+ return 0;
+}
+
+static int vlclua_md5_end( lua_State *L )
+{
+ struct md5_s *p_md5 = (struct md5_s *)luaL_checkudata( L, 1, "md5" );
+ EndMD5( p_md5 );
+ return 0;
+}
+
+static int vlclua_md5_hash( lua_State *L )
+{
+ struct md5_s *p_md5 = (struct md5_s *)luaL_checkudata( L, 1, "md5" );
+ char *psz_hash = psz_md5_hash( p_md5 );
+ lua_pushstring( L, psz_hash );
+ free( psz_hash );
+ return 1;
+}
+
+void luaopen_md5( lua_State *L )
+{
+ lua_pushcfunction( L, vlclua_md5_create );
+ lua_setfield( L, -2, "md5" );
+}