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a866a75900
This branch adds additional methods to dialplan functions, whereby the result buffers are now dynamic buffers, which can be expanded to the size of any result. No longer are variable substitutions limited to 4095 bytes of data. In addition, the common case of needing buffers much smaller than that will enable substitution to only take up the amount of memory actually needed. The existing variable substitution routines are still available, but users of those API calls should transition to using the dynamic-buffer APIs. Reviewboard: http://reviewboard.digium.com/r/174/ git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@191140 65c4cc65-6c06-0410-ace0-fbb531ad65f3
118 lines
3.6 KiB
C
118 lines
3.6 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 2007, Digium, Inc.
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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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* SYSINFO function to return various system data.
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*
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* \note Inspiration and Guidance from Russell
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*
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* \author Jeff Peeler
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*
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* \ingroup functions
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*/
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#include "asterisk.h"
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ASTERISK_FILE_VERSION(__FILE__, "$Revision: 87233 $")
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#if defined(HAVE_SYSINFO)
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#include <sys/sysinfo.h>
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#endif
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#include "asterisk/module.h"
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#include "asterisk/pbx.h"
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static int sysinfo_helper(struct ast_channel *chan, const char *cmd, char *data,
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char *buf, size_t len)
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{
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#if defined(HAVE_SYSINFO)
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struct sysinfo sys_info;
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if (sysinfo(&sys_info)) {
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ast_log(LOG_ERROR, "FAILED to retrieve system information\n");
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return -1;
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}
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#endif
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if (ast_strlen_zero(data)) {
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ast_log(LOG_WARNING, "Syntax: ${SYSINFO(<parameter>)} - missing argument!)\n");
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return -1;
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} else if (!strcasecmp("loadavg", data)) {
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double curloadavg;
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getloadavg(&curloadavg, 1);
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snprintf(buf, len, "%f", curloadavg);
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} else if (!strcasecmp("numcalls", data)) {
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snprintf(buf, len, "%d", ast_active_calls());
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}
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#if defined(HAVE_SYSINFO)
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else if (!strcasecmp("uptime", data)) { /* in hours */
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snprintf(buf, len, "%ld", sys_info.uptime/3600);
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} else if (!strcasecmp("totalram", data)) { /* in KiB */
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snprintf(buf, len, "%ld",(sys_info.totalram * sys_info.mem_unit)/1024);
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} else if (!strcasecmp("freeram", data)) { /* in KiB */
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snprintf(buf, len, "%ld",(sys_info.freeram * sys_info.mem_unit)/1024);
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} else if (!strcasecmp("bufferram", data)) { /* in KiB */
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snprintf(buf, len, "%ld",(sys_info.bufferram * sys_info.mem_unit)/1024);
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} else if (!strcasecmp("totalswap", data)) { /* in KiB */
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snprintf(buf, len, "%ld",(sys_info.totalswap * sys_info.mem_unit)/1024);
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} else if (!strcasecmp("freeswap", data)) { /* in KiB */
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snprintf(buf, len, "%ld",(sys_info.freeswap * sys_info.mem_unit)/1024);
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} else if (!strcasecmp("numprocs", data)) {
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snprintf(buf, len, "%d", sys_info.procs);
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}
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#endif
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else {
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ast_log(LOG_ERROR, "Unknown sysinfo parameter type '%s'.\n", data);
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return -1;
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}
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return 0;
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}
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static struct ast_custom_function sysinfo_function = {
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.name = "SYSINFO",
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.synopsis = "Returns system information specified by parameter.",
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.syntax = "SYSINFO(<parameter>)",
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.read = sysinfo_helper,
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.read_max = 22,
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.desc =
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"Returns information from a given parameter\n"
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" Options:\n"
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" loadavg - system load average from past minute\n"
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" numcalls - number of active calls currently in progress\n"
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#if defined(HAVE_SYSINFO)
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" uptime - system uptime in hours\n"
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" totalram - total usable main memory size in KiB\n"
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" freeram - available memory size in KiB\n"
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" bufferram - memory used by buffers in KiB\n"
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" totalswap - total swap space size in KiB\n"
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" freeswap - free swap space still available in KiB\n"
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" numprocs - number of current processes\n",
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#endif /* HAVE_SYSINFO */
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};
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static int unload_module(void)
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{
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return ast_custom_function_unregister(&sysinfo_function);
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}
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static int load_module(void)
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{
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return ast_custom_function_register(&sysinfo_function);
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}
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AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "System information related functions");
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