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  • /*
     * Asterisk -- An open source telephony toolkit.
     *
     * Copyright (C) 2006, Digium, Inc.
     * Copyright (C) 2006, Claude Patry
     *
     * See http://www.asterisk.org for more information about
     * the Asterisk project. Please do not directly contact
     * any of the maintainers of this project for assistance;
     * the project provides a web site, mailing lists and IRC
     * channels for your use.
     *
     * This program is free software, distributed under the terms of
     * the GNU General Public License Version 2. See the LICENSE file
     * at the top of the source tree.
     */
    
    /*! \file
     *
     * \brief SHA1 digest related dialplan functions
     * 
     * \author Claude Patry <cpatry@gmail.com>
    
    Olle Johansson's avatar
    Olle Johansson committed
     *
     * \ingroup functions
    
     */
    
    #include "asterisk.h"
    
    ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
    
    
    #include <stdlib.h>
    #include <string.h>
    #include <sys/types.h>
    
    
    #include "asterisk/module.h"
    #include "asterisk/channel.h"
    #include "asterisk/pbx.h"
    #include "asterisk/logger.h"
    #include "asterisk/utils.h"
    #include "asterisk/app.h"
    
    
    static int sha1(struct ast_channel *chan, const char *cmd, char *data,
    
    		char *buf, size_t len)
    
    	*buf = '\0';
    
    
    	if (ast_strlen_zero(data)) {
    		ast_log(LOG_WARNING, "Syntax: SHA1(<data>) - missing argument!\n");
    
    		return -1;
    
    	}
    
    	if (len >= 41)
    		ast_sha1_hash(buf, data);
    	else {
    
    		ast_log(LOG_ERROR,
    				"Insufficient space to produce SHA1 hash result (%d < 41)\n",
    
    				(int) len);
    
    
    static struct ast_custom_function sha1_function = {
    	.name = "SHA1",
    	.synopsis = "Computes a SHA1 digest",
    	.syntax = "SHA1(<data>)",
    	.read = sha1,
    	.desc = "Generate a SHA1 digest via the SHA1 algorythm.\n"
    
    		" Example:  Set(sha1hash=${SHA1(junky)})\n"
    		" Sets the asterisk variable sha1hash to the string '60fa5675b9303eb62f99a9cd47f9f5837d18f9a0'\n"
    		" which is known as his hash\n",
    
    static int unload_module(void)
    
    	return ast_custom_function_unregister(&sha1_function);
    
    static int load_module(void)
    
    	return ast_custom_function_register(&sha1_function);
    
    AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "SHA-1 computation dialplan function");