e6b2e9a750
This patch adds 'const' tags to a number of Asterisk APIs where they are appropriate (where the API already demanded that the function argument not be modified, but the compiler was not informed of that fact). The list includes: - CLI command handlers - CLI command handler arguments - AGI command handlers - AGI command handler arguments - Dialplan application handler arguments - Speech engine API function arguments In addition, various file-scope and function-scope constant arrays got 'const' and/or 'static' qualifiers where they were missing. Review: https://reviewboard.asterisk.org/r/251/ git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@196072 65c4cc65-6c06-0410-ace0-fbb531ad65f3
119 lines
3 KiB
C
119 lines
3 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 2007, Redfish Solutions
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*
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* Philip Prindeville <philipp@redfish-solutions.com>
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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 Sleep until the given epoch
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*
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* \author Philip Prindeville <philipp@redfish-solutions.com>
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*
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* \ingroup applications
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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/logger.h"
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#include "asterisk/channel.h"
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#include "asterisk/pbx.h"
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#include "asterisk/module.h"
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/*** DOCUMENTATION
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<application name="WaitUntil" language="en_US">
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<synopsis>
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Wait (sleep) until the current time is the given epoch.
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</synopsis>
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<syntax>
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<parameter name="epoch" required="true" />
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</syntax>
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<description>
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<para>Waits until the given <replaceable>epoch</replaceable>.</para>
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<para>Sets <variable>WAITUNTILSTATUS</variable> to one of the following values:</para>
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<variablelist>
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<variable name="WAITUNTILSTATUS">
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<value name="OK">
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Wait succeeded.
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</value>
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<value name="FAILURE">
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Invalid argument.
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</value>
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<value name="HANGUP">
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Channel hungup before time elapsed.
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</value>
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<value name="PAST">
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Time specified had already past.
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</value>
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</variable>
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</variablelist>
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</description>
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</application>
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***/
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static char *app = "WaitUntil";
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static int waituntil_exec(struct ast_channel *chan, const char *data)
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{
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int res;
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double fraction;
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long seconds;
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struct timeval future = { 0, };
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struct timeval now = ast_tvnow();
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int msec;
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if (ast_strlen_zero(data)) {
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ast_log(LOG_WARNING, "WaitUntil requires an argument(epoch)\n");
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pbx_builtin_setvar_helper(chan, "WAITUNTILSTATUS", "FAILURE");
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return 0;
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}
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if (sscanf(data, "%ld%lf", &seconds, &fraction) == 0) {
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ast_log(LOG_WARNING, "WaitUntil called with non-numeric argument\n");
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pbx_builtin_setvar_helper(chan, "WAITUNTILSTATUS", "FAILURE");
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return 0;
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}
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future.tv_sec = seconds;
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future.tv_usec = fraction * 1000000;
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if ((msec = ast_tvdiff_ms(future, now)) < 0) {
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ast_log(LOG_NOTICE, "WaitUntil called in the past (now %ld, arg %ld)\n", (long)now.tv_sec, (long)future.tv_sec);
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pbx_builtin_setvar_helper(chan, "WAITUNTILSTATUS", "PAST");
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return 0;
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}
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if ((res = ast_safe_sleep(chan, msec)))
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pbx_builtin_setvar_helper(chan, "WAITUNTILSTATUS", "HANGUP");
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else
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pbx_builtin_setvar_helper(chan, "WAITUNTILSTATUS", "OK");
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return res;
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}
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static int unload_module(void)
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{
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return ast_unregister_application(app);
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}
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static int load_module(void)
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{
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return ast_register_application_xml(app, waituntil_exec);
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}
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AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Wait until specified time");
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