a866a75900
This branch adds additional methods to dialplan functions, whereby the result buffers are now dynamic buffers, which can be expanded to the size of any result. No longer are variable substitutions limited to 4095 bytes of data. In addition, the common case of needing buffers much smaller than that will enable substitution to only take up the amount of memory actually needed. The existing variable substitution routines are still available, but users of those API calls should transition to using the dynamic-buffer APIs. Reviewboard: http://reviewboard.digium.com/r/174/ git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@191140 65c4cc65-6c06-0410-ace0-fbb531ad65f3
83 lines
2 KiB
C
83 lines
2 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 1999 - 2006, Digium, Inc.
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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 Simple module check function
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* \author Olle E. Johansson, Edvina.net
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*
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* \ingroup functions
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*/
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#include "asterisk.h"
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ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
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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="IFMODULE" language="en_US">
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<synopsis>
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Checks if an Asterisk module is loaded in memory.
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</synopsis>
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<syntax>
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<parameter name="modulename.so" required="true">
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<para>Module name complete with <literal>.so</literal></para>
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</parameter>
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</syntax>
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<description>
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<para>Checks if a module is loaded. Use the full module name
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as shown by the list in <literal>module list</literal>.
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Returns <literal>1</literal> if module exists in memory, otherwise <literal>0</literal></para>
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</description>
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</function>
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***/
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static int ifmodule_read(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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char *ret = "0";
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*buf = '\0';
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if (data)
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if (ast_module_check(data))
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ret = "1";
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ast_copy_string(buf, ret, len);
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return 0;
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}
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static struct ast_custom_function ifmodule_function = {
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.name = "IFMODULE",
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.read = ifmodule_read,
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.read_max = 2,
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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(&ifmodule_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(&ifmodule_function);
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}
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AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Checks if Asterisk module is loaded in memory");
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