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/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 2007, Digium, Inc.
*
* See http://www.asterisk.org for more information about
* the Asterisk project. Please do not directly contact
* any of the maintainers of this project for assistance;
* the project provides a web site, mailing lists and IRC
* channels for your use.
*
* This program is free software, distributed under the terms of
* the GNU General Public License Version 2. See the LICENSE file
* at the top of the source tree.
*/
/*! \file
*
* SYSINFO function to return various system data.
*
* \note Inspiration and Guidance from Russell
*
* \author Jeff Peeler
*
* \ingroup functions
*/
#include "asterisk.h"
ASTERISK_FILE_VERSION(__FILE__, "$Revision: 87233 $")
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#if defined(HAVE_SYSINFO)
#include <sys/sysinfo.h>
#endif
#include "asterisk/module.h"
#include "asterisk/channel.h"
#include "asterisk/pbx.h"
#include "asterisk/logger.h"
#include "asterisk/utils.h"
#include "asterisk/app.h"
static int sysinfo_helper(struct ast_channel *chan, const char *cmd, char *data,
char *buf, size_t len)
{
#if defined(HAVE_SYSINFO)
struct sysinfo sys_info;
if (sysinfo(&sys_info)) {
ast_log(LOG_ERROR, "FAILED to retrieve system information\n");
return -1;
}
#endif
if (ast_strlen_zero(data)) {
ast_log(LOG_WARNING, "Syntax: ${SYSINFO(<parameter>)} - missing argument!)\n");
return -1;
} else if (!strcasecmp("loadavg", data)) {
double curloadavg;
getloadavg(&curloadavg, 1);
snprintf(buf, len, "%f", curloadavg);
} else if (!strcasecmp("numcalls", data)) {
snprintf(buf, len, "%d", ast_active_calls());
}
#if defined(HAVE_SYSINFO)
else if (!strcasecmp("uptime", data)) { /* in hours */
snprintf(buf, len, "%ld", sys_info.uptime/3600);
} else if (!strcasecmp("totalram", data)) { /* in KiB */
snprintf(buf, len, "%ld",(sys_info.totalram / sys_info.mem_unit)/1024);
} else if (!strcasecmp("freeram", data)) { /* in KiB */
snprintf(buf, len, "%ld",(sys_info.freeram / sys_info.mem_unit)/1024);
} else if (!strcasecmp("bufferram", data)) { /* in KiB */
snprintf(buf, len, "%ld",(sys_info.bufferram / sys_info.mem_unit)/1024);
} else if (!strcasecmp("totalswap", data)) { /* in KiB */
snprintf(buf, len, "%ld",(sys_info.totalswap / sys_info.mem_unit)/1024);
} else if (!strcasecmp("freeswap", data)) { /* in KiB */
snprintf(buf, len, "%ld",(sys_info.freeswap / sys_info.mem_unit)/1024);
} else if (!strcasecmp("numprocs", data)) {
snprintf(buf, len, "%d", sys_info.procs);
}
#endif
else {
ast_log(LOG_ERROR, "Unknown sysinfo parameter type '%s'.\n", data);
return -1;
}
return 0;
}
static struct ast_custom_function sysinfo_function = {
.name = "SYSINFO",
.synopsis = "Returns system information specified by parameter.",
.syntax = "SYSINFO(<parameter>)",
.read = sysinfo_helper,
.desc =
"Returns information from a given parameter\n"
" Options:\n"
" loadavg - system load average from past minute\n"
" numcalls - number of active calls currently in progress\n"
" uptime - system uptime in hours\n"
" totalram - total usable main memory size in KiB\n"
" freeram - available memory size in KiB\n"
" bufferram - memory used by buffers in KiB\n"
" totalswap - total swap space size in KiB\n"
" freeswap - free swap space still available in KiB\n"
" numprocs - number of current processes\n",
};
static int unload_module(void)
{
return ast_custom_function_unregister(&sysinfo_function);
}
static int load_module(void)
{
return ast_custom_function_register(&sysinfo_function);
}
AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "System information related functions");
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