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  • /*
     * Asterisk -- An open source telephony toolkit.
     *
     * Copyright (C) 2005, Digium, Inc.
     * Copyright (C) 2005, 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 Use the base64 as functions
     * 
     */
    
    #include <stdlib.h>
    #include <string.h>
    #include <sys/types.h>
    
    #include "asterisk.h"
    
    /* ASTERISK_FILE_VERSION(__FILE__, "Revision: 7221 ") */
    
    #include "asterisk/channel.h"
    #include "asterisk/pbx.h"
    #include "asterisk/logger.h"
    #include "asterisk/utils.h"
    #include "asterisk/app.h"
    
    static char *builtin_function_base64_encode(struct ast_channel *chan, char *cmd, char *data, char *buf, size_t len) 
    {
    	int res = 0;
    
    	if (ast_strlen_zero(data) ) {
    		ast_log(LOG_WARNING, "Syntax: BASE64_ENCODE(<data>) - missing argument!\n");
    		return NULL;
    	}
    
    	ast_log(LOG_DEBUG, "data=%s\n",data);
    	res = ast_base64encode(buf, data, strlen(data), len);
    	ast_log(LOG_DEBUG, "res=%d\n", res);
    	return buf;
    }
    
    static char *builtin_function_base64_decode(struct ast_channel *chan, char *cmd, char *data, char *buf, size_t len) 
    {
    	if (ast_strlen_zero(data) ) {
    		ast_log(LOG_WARNING, "Syntax: BASE64_DECODE(<base_64 string>) - missing argument!\n");
    		return NULL;
    	}
    
    	ast_log(LOG_DEBUG, "data=%s\n", data);
    	ast_base64decode(buf, data, len);
    	return buf;
    }
    
    #ifndef BUILTIN_FUNC
    static
    #endif
    struct ast_custom_function base64_encode_function = {
    	.name = "BASE64_ENCODE",
    	.synopsis = "Encode a string in base64",
    	.desc = "Returns the base64 string\n",
    	.syntax = "BASE64_ENCODE(<string>)",
    	.read = builtin_function_base64_encode,
    };
    
    #ifndef BUILTIN_FUNC
    static
    #endif
    struct ast_custom_function base64_decode_function = {
    	.name = "BASE64_DECODE",
    	.synopsis = "Decode a base64 string",
    	.desc = "Returns the plain text string\n",
    	.syntax = "BASE64_DECODE(<base64_string>)",
    	.read = builtin_function_base64_decode,
    };