95 lines
2.2 KiB
C
95 lines
2.2 KiB
C
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/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 2006, Digium, Inc.
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* Copyright (C) 2006, Claude Patry
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*! \file
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*
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* \brief SHA1 digest related dialplan functions
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*
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* \author Claude Patry <cpatry@gmail.com>
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*
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* \ingroup functions
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*/
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/*** MODULEINFO
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<support_level>core</support_level>
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***/
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#include "asterisk.h"
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#include "asterisk/module.h"
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#include "asterisk/pbx.h"
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/*** DOCUMENTATION
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<function name="SHA1" language="en_US">
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<synopsis>
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Computes a SHA1 digest.
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</synopsis>
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<syntax>
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<parameter name="data" required="true">
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<para>Input string</para>
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</parameter>
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</syntax>
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<description>
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<para>Generate a SHA1 digest via the SHA1 algorythm.</para>
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<example title="Set sha1hash variable to SHA1 hash of junky">
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exten => s,1,Set(sha1hash=${SHA1(junky)})
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</example>
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<para>The example above sets the asterisk variable sha1hash to the string <literal>60fa5675b9303eb62f99a9cd47f9f5837d18f9a0</literal>
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which is known as its hash</para>
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</description>
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</function>
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***/
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static int sha1(struct ast_channel *chan, const char *cmd, char *data,
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char *buf, size_t len)
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{
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*buf = '\0';
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if (ast_strlen_zero(data)) {
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ast_log(LOG_WARNING, "Syntax: SHA1(<data>) - missing argument!\n");
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return -1;
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}
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if (len >= 41)
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ast_sha1_hash(buf, data);
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else {
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ast_log(LOG_ERROR,
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"Insufficient space to produce SHA1 hash result (%d < 41)\n",
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(int) len);
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}
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return 0;
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}
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static struct ast_custom_function sha1_function = {
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.name = "SHA1",
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.read = sha1,
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.read_max = 42,
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};
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static int unload_module(void)
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{
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return ast_custom_function_unregister(&sha1_function);
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}
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static int load_module(void)
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{
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return ast_custom_function_register(&sha1_function);
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}
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AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "SHA-1 computation dialplan function");
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