e43bc6634d
As partly documented in loader.c and include/asterisk/module.h, modules are now expected to return all of their methods and flags into a structure 'mod_data', and are normally loaded with RTLD_NOW | RTLD_LOCAL, so symbols are resolved immediately and conflicts should be less likely. Only in a small number of cases (res_*, typically) modules are loaded RTLD_GLOBAL, so they can export symbols. The core of the change is only the two files loader.c and include/asterisk/module.h, all the rest is simply adaptation of the existing modules to the new API, a rather mechanical (but believe me, time and finger-consuming!) process whose detail you can figure out by svn diff'ing any single module. Expect some minor compilation issue after this change, please report it on mantis http://bugs.digium.com/view.php?id=6968 so we collect all the feedback in one place. I am just sorry that this change missed SVN version number 20000! git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@20003 65c4cc65-6c06-0410-ace0-fbb531ad65f3
150 lines
3 KiB
C
150 lines
3 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 1999 - 2005, Digium, Inc.
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*
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* Mark Spencer <markster@digium.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 Wait for Ring Application
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*
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* \author Mark Spencer <markster@digium.com>
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*
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* \ingroup applications
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include "asterisk.h"
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ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
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#include "asterisk/file.h"
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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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#include "asterisk/options.h"
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#include "asterisk/lock.h"
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static char *synopsis = "Wait for Ring Application";
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static char *tdesc = "Waits until first ring after time";
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static char *desc = " WaitForRing(timeout)\n"
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"Returns 0 after waiting at least timeout seconds. and\n"
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"only after the next ring has completed. Returns 0 on\n"
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"success or -1 on hangup\n";
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static char *app = "WaitForRing";
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LOCAL_USER_DECL;
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static int waitforring_exec(struct ast_channel *chan, void *data)
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{
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struct localuser *u;
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struct ast_frame *f;
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int res = 0;
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int ms;
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if (!data || (sscanf(data, "%d", &ms) != 1)) {
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ast_log(LOG_WARNING, "WaitForRing requires an argument (minimum seconds)\n");
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return 0;
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}
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LOCAL_USER_ADD(u);
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ms *= 1000;
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while(ms > 0) {
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ms = ast_waitfor(chan, ms);
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if (ms < 0) {
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res = ms;
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break;
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}
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if (ms > 0) {
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f = ast_read(chan);
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if (!f) {
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res = -1;
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break;
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}
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if ((f->frametype == AST_FRAME_CONTROL) && (f->subclass == AST_CONTROL_RING)) {
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if (option_verbose > 2)
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ast_verbose(VERBOSE_PREFIX_3 "Got a ring but still waiting for timeout\n");
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}
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ast_frfree(f);
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}
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}
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/* Now we're really ready for the ring */
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if (!res) {
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ms = 99999999;
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while(ms > 0) {
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ms = ast_waitfor(chan, ms);
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if (ms < 0) {
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res = ms;
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break;
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}
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if (ms > 0) {
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f = ast_read(chan);
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if (!f) {
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res = -1;
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break;
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}
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if ((f->frametype == AST_FRAME_CONTROL) && (f->subclass == AST_CONTROL_RING)) {
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if (option_verbose > 2)
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ast_verbose(VERBOSE_PREFIX_3 "Got a ring after the timeout\n");
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ast_frfree(f);
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break;
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}
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ast_frfree(f);
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}
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}
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}
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LOCAL_USER_REMOVE(u);
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return res;
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}
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static int unload_module(void *mod)
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{
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int res;
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res = ast_unregister_application(app);
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STANDARD_HANGUP_LOCALUSERS;
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return res;
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}
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static int load_module(void *mod)
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{
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return ast_register_application(app, waitforring_exec, synopsis, desc);
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}
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static const char *description(void)
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{
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return tdesc;
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}
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static const char *key(void)
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{
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return ASTERISK_GPL_KEY;
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}
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STD_MOD1;
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