https://origsvn.digium.com/svn/asterisk/branches/1.8 ................ r284597 | tilghman | 2010-09-02 00:00:34 -0500 (Thu, 02 Sep 2010) | 29 lines Merged revisions 284593,284595 via svnmerge from https://origsvn.digium.com/svn/asterisk/branches/1.6.2 ................ r284593 | tilghman | 2010-09-01 17:59:50 -0500 (Wed, 01 Sep 2010) | 18 lines Merged revisions 284478 via svnmerge from https://origsvn.digium.com/svn/asterisk/branches/1.4 ........ r284478 | tilghman | 2010-09-01 13:49:11 -0500 (Wed, 01 Sep 2010) | 11 lines Ensure that all areas that previously used select(2) now use poll(2), with implementations that need poll(2) implemented with select(2) safe against 1024-bit overflows. This is a followup to the fix for the pthread timer in 1.6.2 and beyond, fixing a potential crash bug in all supported releases. (closes issue #17678) Reported by: russell Branch: https://origsvn.digium.com/svn/asterisk/team/tilghman/ast_select Review: https://reviewboard.asterisk.org/r/824/ ........ ................ r284595 | tilghman | 2010-09-01 22:57:43 -0500 (Wed, 01 Sep 2010) | 2 lines Failed to rerun bootstrap.sh after last commit ................ ................ git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@284598 65c4cc65-6c06-0410-ace0-fbb531ad65f3
199 lines
5.3 KiB
C
199 lines
5.3 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 2007 - 2008, Digium, Inc.
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*
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* Russell Bryant <russell@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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/*!
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* \file
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* \author Russell Bryant <russell@digium.com>
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*
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* \brief Usage of the SAForum AIS (Application Interface Specification)
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*
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* \arg http://www.openais.org/
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*
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* This file contains the common code between the uses of the different AIS
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* services.
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*
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* \note This module is still considered experimental, as it exposes the
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* internal binary format of events between Asterisk servers over a network.
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* However, this format is still subject to change between 1.6.X releases.
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*/
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/*** MODULEINFO
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<depend>ais</depend>
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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 <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 <errno.h>
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#include <signal.h>
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#include <pthread.h>
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#include "ais/ais.h"
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#include "asterisk/module.h"
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#include "asterisk/options.h"
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#include "asterisk/logger.h"
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#include "asterisk/channel.h"
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#include "asterisk/utils.h"
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#include "asterisk/cli.h"
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static struct {
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pthread_t id;
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unsigned int stop:1;
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} dispatch_thread = {
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.id = AST_PTHREADT_NULL,
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};
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SaVersionT ais_version = { 'B', 1, 1 };
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static const struct ais_error {
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SaAisErrorT error;
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const char *desc;
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} ais_errors[] = {
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{ SA_AIS_OK, "OK" },
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{ SA_AIS_ERR_LIBRARY, "Library Error" },
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{ SA_AIS_ERR_VERSION, "Version Not Compatible" },
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{ SA_AIS_ERR_INIT, "Callback Not Registered" },
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{ SA_AIS_ERR_TIMEOUT, "Timeout" },
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{ SA_AIS_ERR_TRY_AGAIN , "Try Again" },
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{ SA_AIS_ERR_INVALID_PARAM, "Invalid Parameter" },
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{ SA_AIS_ERR_NO_MEMORY, "No Memory" },
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{ SA_AIS_ERR_BAD_HANDLE, "Invalid Handle" },
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{ SA_AIS_ERR_BUSY, "Resource Already In Use" },
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{ SA_AIS_ERR_ACCESS, "Access Denied" },
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{ SA_AIS_ERR_NOT_EXIST, "Does Not Exist" },
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{ SA_AIS_ERR_NAME_TOO_LONG, "Name Too Long" },
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{ SA_AIS_ERR_EXIST, "Already Exists" },
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{ SA_AIS_ERR_NO_SPACE, "Buffer Too Small" },
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{ SA_AIS_ERR_INTERRUPT, "Request Interrupted" },
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{ SA_AIS_ERR_NAME_NOT_FOUND, "Name Not Found" },
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{ SA_AIS_ERR_NO_RESOURCES, "Not Enough Resources" },
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{ SA_AIS_ERR_NOT_SUPPORTED, "Requested Function Not Supported" },
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{ SA_AIS_ERR_BAD_OPERATION, "Operation Not Allowed" },
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{ SA_AIS_ERR_FAILED_OPERATION, "Operation Failed" },
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{ SA_AIS_ERR_MESSAGE_ERROR, "Communication Error" },
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{ SA_AIS_ERR_QUEUE_FULL, "Destination Queue Full" },
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{ SA_AIS_ERR_QUEUE_NOT_AVAILABLE, "Destination Queue Not Available" },
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{ SA_AIS_ERR_BAD_FLAGS, "Invalid Flags" },
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{ SA_AIS_ERR_TOO_BIG, "Value Too Large" },
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{ SA_AIS_ERR_NO_SECTIONS, "No More Sections to Initialize" },
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};
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const char *ais_err2str(SaAisErrorT error)
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{
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int x;
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for (x = 0; x < ARRAY_LEN(ais_errors); x++) {
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if (ais_errors[x].error == error)
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return ais_errors[x].desc;
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}
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return "Unknown";
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}
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static void *dispatch_thread_handler(void *data)
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{
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SaSelectionObjectT clm_fd, evt_fd;
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int res;
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struct pollfd pfd[2] = { { .events = POLLIN, }, { .events = POLLIN, } };
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SaAisErrorT ais_res;
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ais_res = saClmSelectionObjectGet(clm_handle, &clm_fd);
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if (ais_res != SA_AIS_OK) {
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ast_log(LOG_ERROR, "Failed to retrieve select fd for CLM service. "
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"This module will not operate.\n");
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return NULL;
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}
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ais_res = saEvtSelectionObjectGet(evt_handle, &evt_fd);
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if (ais_res != SA_AIS_OK) {
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ast_log(LOG_ERROR, "Failed to retrieve select fd for EVT service. "
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"This module will not operate.\n");
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return NULL;
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}
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pfd[0].fd = clm_fd;
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pfd[1].fd = evt_fd;
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while (!dispatch_thread.stop) {
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pfd[0].revents = 0;
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pfd[1].revents = 0;
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res = ast_poll(pfd, 2, -1);
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if (res == -1 && errno != EINTR && errno != EAGAIN) {
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ast_log(LOG_ERROR, "Select error (%s) dispatch thread going away now, "
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"and the module will no longer operate.\n", strerror(errno));
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break;
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}
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if (pfd[0].revents & POLLIN) {
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saClmDispatch(clm_handle, SA_DISPATCH_ALL);
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}
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if (pfd[1].revents & POLLIN) {
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saEvtDispatch(evt_handle, SA_DISPATCH_ALL);
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}
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}
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return NULL;
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}
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static int load_module(void)
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{
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if (ast_ais_clm_load_module())
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goto return_error;
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if (ast_ais_evt_load_module())
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goto evt_failed;
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if (ast_pthread_create_background(&dispatch_thread.id, NULL,
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dispatch_thread_handler, NULL)) {
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ast_log(LOG_ERROR, "Error starting AIS dispatch thread.\n");
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goto dispatch_failed;
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}
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return AST_MODULE_LOAD_SUCCESS;
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dispatch_failed:
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ast_ais_evt_unload_module();
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evt_failed:
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ast_ais_clm_unload_module();
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return_error:
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return AST_MODULE_LOAD_DECLINE;
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}
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static int unload_module(void)
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{
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ast_ais_clm_unload_module();
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ast_ais_evt_unload_module();
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if (dispatch_thread.id != AST_PTHREADT_NULL) {
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dispatch_thread.stop = 1;
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pthread_kill(dispatch_thread.id, SIGURG); /* poke! */
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pthread_join(dispatch_thread.id, NULL);
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}
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return 0;
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}
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AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "SAForum AIS");
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