/*
* 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
*/
/*** MODULEINFO
core
***/
#include "asterisk.h"
ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
#if defined(HAVE_SYSINFO)
#include
#endif
#include "asterisk/module.h"
#include "asterisk/pbx.h"
/*** DOCUMENTATION
Returns system information specified by parameter.
System load average from past minute.
Number of active calls currently in progress.
System uptime in hours.
This parameter is dependant upon operating system.
Total usable main memory size in KiB.
This parameter is dependant upon operating system.
Available memory size in KiB.
This parameter is dependant upon operating system.
Memory used by buffers in KiB.
This parameter is dependant upon operating system.
Total swap space still available in KiB.
This parameter is dependant upon operating system.
Free swap space still available in KiB.
This parameter is dependant upon operating system.
Number of current processes.
This parameter is dependant upon operating system.
Returns information from a given parameter.
***/
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()} - 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, "%lu",(sys_info.totalram * sys_info.mem_unit)/1024);
} else if (!strcasecmp("freeram", data)) { /* in KiB */
snprintf(buf, len, "%lu",(sys_info.freeram * sys_info.mem_unit)/1024);
} else if (!strcasecmp("bufferram", data)) { /* in KiB */
snprintf(buf, len, "%lu",(sys_info.bufferram * sys_info.mem_unit)/1024);
} else if (!strcasecmp("totalswap", data)) { /* in KiB */
snprintf(buf, len, "%lu",(sys_info.totalswap * sys_info.mem_unit)/1024);
} else if (!strcasecmp("freeswap", data)) { /* in KiB */
snprintf(buf, len, "%lu",(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",
.read = sysinfo_helper,
.read_max = 22,
};
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");