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rrdtool-proxy.php
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rrdtool-proxy.php
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#!/usr/bin/php
<?php
/*
+-------------------------------------------------------------------------+
| Copyright (C) 2004-2024 The Cacti Group |
| |
| This program is free software; you can redistribute it and/or |
| modify it under the terms of the GNU General Public License |
| as published by the Free Software Foundation; either version 2 |
| of the License, or (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
+-------------------------------------------------------------------------+
| Cacti: The Complete RRDTool-based Graphing Solution |
+-------------------------------------------------------------------------+
| This code is designed, written, and maintained by the Cacti Group. See |
| about.php and/or the AUTHORS file for specific developer information. |
+-------------------------------------------------------------------------+
| http://www.cacti.net/ |
+-------------------------------------------------------------------------+
*/
/* do NOT run this script through a web browser */
use phpseclib\Crypt\RSA;
if (!isset($_SERVER['argv'][0]) || isset($_SERVER['REQUEST_METHOD']) || isset($_SERVER['REMOTE_ADDR'])) {
die('<br><strong>This script is only meant to run at the command line.</strong>');
}
define('SYSTEM_LOGGING', true);
define('NL', "\r\n");
chdir(dirname(__FILE__));
require_once ('./include/global.php');
require_once ('./lib/functions.php');
/* process calling arguments */
$parms = $_SERVER['argv'];
array_shift($parms);
$microtime_start = microtime(true);
$systemd = false;
$wizard = false;
$force = false;
if (__sizeof($parms) != 0) {
foreach ($parms as $parameter) {
@list($arg, $value) = @explode('=', $parameter);
switch ($arg) {
case '-s':
case '-systemd':
$systemd = true;
break;
case '-w':
case '--wizard':
$wizard = true;
break;
case '--force':
case '-f':
$force = true;
break;
case '-v':
case '--version':
display_version();
exit;
case '-h':
case '--help':
display_help();
exit ;
default:
print 'ERROR: Invalid Parameter ' . $parameter . NL . NL;
display_help();
exit ;
}
}
}
/* ---------------------------- SYSTEM SETUP ROUTINE -------------------------------------- */
if (!file_exists('./include/config') OR $wizard === true ) {
if ( $systemd === true ) {
rrd_system__system_die('Please run "rrdtool-proxy.php -w" to start the proxy wizard.');
}else {
/* configure proxy */
init_wizard();
}
} else {
include_once ('./include/config');
if ( empty($rrdp_config) || !array_key_exists('version', $rrdp_config) || version_compare($rrdp_config['version'], RRDP_VERSION, '<')) {
/* invalid configuration or version upgrade requires reconfiguration */
if ( $systemd === true ) {
rrd_system__system_die('Proxy has not been configured properly. Please re-run "rrdtool-proxy.php -w" to config the proxy wizard properly.');
}
init_wizard();
}
/* regular system start */
if ($systemd === false) {
rrdp_system__logging(LOGGING_LOCATION_BUFFERED, 'Initiate system startup', 'SYS', SEVERITY_LEVEL_INFORMATIONAL);
fwrite(STDOUT, '\e[8;50;80t');
fwrite(STDOUT, ANSI_ERASE_SCREEN . ANSI_ERASE_BUFFER . ANSI_POS_TOP_LEFT . ANSI_BOLD . ANSI_YELLOW_FG . ANSI_BLUE_BG);
fwrite(STDOUT, ' RRDtool Proxy Server Startup ' . ANSI_RESET . NL);
}
/* No Windows, please ;) */
$support_os = strstr(PHP_OS, 'WIN') ? false : true;
rrd_system__system_boolean_message('test: operation system supported', $support_os, true);
/* check PHP version */
$php_version = (!defined('PHP_VERSION_ID') OR (PHP_VERSION_ID < RRDP_PHP_VERSION_REQUIRED)) ? false : true;
rrd_system__system_boolean_message( 'test: php version', $php_version, true );
/* RRDtool Proxy has already been started ? */
$not_running = is_rrdtool_proxy_running();
rrd_system__system_boolean_message('test: no proxy instance running', $not_running, true, $force);
/* RRDtool Cache Daemon has already been started ? */
unset($output);
$not_running = is_rrdcached_running();
rrd_system__system_boolean_message('test: no cache instance running', $not_running, true);
/* check state of required and optional php modules */
rrd_system__system_boolean_message('test: php module \'sockets\'', extension_loaded('sockets'), true);
rrd_system__system_boolean_message('test: php module \'posix\'', extension_loaded('posix'), true);
rrd_system__system_boolean_message('test: php module \'pcntl\'', extension_loaded('pcntl'), true);
rrd_system__system_boolean_message('test: php module \'gmp\'', extension_loaded('gmp'), true);
rrd_system__system_boolean_message('test: php module \'openssl\'', extension_loaded('openssl'), true);
rrd_system__system_boolean_message('test: php module \'zlib\'', extension_loaded('zlib'), true);
exec('ulimit -n', $max_open_files);
$pid_of_php = getmypid();
exec("ls -l /proc/$pid_of_php/fd/ | wc -l", $open_files);
if ($max_open_files[0] == 'unlimited')
$max_open_files[0] = 1048576;
rrd_system__system_boolean_message('test: max. number of open files [' . $max_open_files[0] . ']', $max_open_files[0], true);
rrd_system__system_boolean_message('test: max. number of connections in backlog [' . SOMAXCONN . ']', SOMAXCONN, true);
}
/* ---------------------------- BEGIN - SYSTEM STARTUP ROUTINE -------------------------------------- */
/* fork the current process to initiate RRDproxy's master process */
$ppid = posix_getpid();
$pid = pcntl_fork();
if ($pid == -1) {
/* oops ... something went wrong :/ */
rrd_system__system_boolean_message('init: proxy master process', false, true);
return false;
} elseif ($pid == 0) {
/* the child should do nothing as long as the parent is still alive */
$sid = posix_setsid();
rrd_system__system_boolean_message('init: detach master process', $sid, true);
} else {
/* kill the parent not before the child signals being up */
$info = array();
$rrdp_state = pcntl_sigwaitinfo(array(SIGUSR1, SIGTERM), $info);
exit ;
}
/* load configuration and config arrays */
chdir(dirname(__FILE__));
require_once ('./include/global.php');
require_once ('./include/config');
@include_once ('./include/clients');
@include_once ('./include/proxies');
/* include external libraries */
set_include_path('./include/phpseclib/');
require_once ('Math/BigInteger.php');
require_once ('Crypt/Base.php');
require_once ('Crypt/Hash.php');
require_once ('Crypt/Random.php');
require_once ('Crypt/RSA.php');
require_once ('Crypt/Rijndael.php');
/* install signal handler */
pcntl_signal(SIGHUP, 'rrdp_sig_handler');
pcntl_signal(SIGTERM, 'rrdp_sig_handler');
pcntl_signal(SIGUSR1, 'rrdp_sig_handler');
pcntl_signal(SIGUSR2, 'rrdp_sig_handler');
/* setup running config */
rrdp_system__encryption_init();
$rrdp_config['path_base'] = dirname(__FILE__);
$rrdp_config['path_cli'] = $rrdp_config['path_base'] . '/cli';
$rrdp_config['path_include'] = $rrdp_config['path_base'] . '/include';
$rrdp_config['path_library'] = $rrdp_config['path_base'] . '/lib';
$rrdp_config['start'] = microtime(true);
$rrdp_config['last_sync'] = true;
$rrdp_config['remote_clients'] = isset($rrdp_remote_clients) ? $rrdp_remote_clients : array();
$rrdp_config['remote_proxies'] = isset($rrdp_remote_proxies) ? $rrdp_remote_proxies : array();
$rrdp_config['address'] = ($rrdp_config['ip_version'] == 4) ? $rrdp_config['address_4'] : $rrdp_config['address_6'];
/* configure socket server presets */
declare(ticks = 10);
ini_set('default_socket_timeout', '10');
ini_set('max_execution_time', '0');
ini_set('memory_limit', '1024M');
error_reporting(E_ALL ^ E_NOTICE);
$__server_listening = true;
$rrdp_msr_buffer = array();
$rrdp_buffers = array('logging_buffered' => array(), 'logging_snmp' => array() );
/* set up an admin socket for proxy administration */
$rrdp_admin = @socket_create( ($rrdp_config['ip_version'] == 4) ? AF_INET : AF_INET6 , SOCK_STREAM, SOL_TCP);
if ($rrdp_admin === false) {
rrd_system__system_die(NL . 'Unable to create socket. Error: ' . socket_strerror(socket_last_error()) . NL);
}else {
$rrdp_admin_resource_id = rrdp_system__get_resource_id($rrdp_admin);
}
@socket_set_option($rrdp_admin, SOL_SOCKET, SO_REUSEADDR, 1);
if (!@socket_bind($rrdp_admin, (($rrdp_config['ipv6']) ? '::1' : '127.0.0.1'), $rrdp_config['port_admin'])) {
rrd_system__system_die(NL . 'Unable to bind socket to \'' . $rrdp_config['address'] . ':' . $rrdp_config['port_admin'] . '\'' . NL . 'Error: ' . socket_strerror(socket_last_error()) . NL);
}
socket_set_nonblock($rrdp_admin);
socket_listen($rrdp_admin);
rrd_system__system_boolean_message('init: tcp admin socket #' . $rrdp_admin_resource_id, $rrdp_admin, true);
rrdp_system__logging(LOGGING_LOCATION_BUFFERED, 'Start listening to port ' . $rrdp_config['address'] . ':' . $rrdp_config['port_admin'], 'SYS', SEVERITY_LEVEL_NOTIFICATION);
/* set up a client socket handling requests against RRDtool */
$rrdp_client = @socket_create( (($rrdp_config['ip_version'] == 4) ? AF_INET : AF_INET6 ), SOCK_STREAM, SOL_TCP);
if ($rrdp_client === false) {
rrd_system__system_die(NL . 'Unable to create socket. Error: ' . socket_strerror(socket_last_error()) . NL);
}else {
$rrdp_client_resource_id = rrdp_system__get_resource_id($rrdp_client);
}
@socket_set_option($rrdp_client, SOL_SOCKET, SO_REUSEADDR, 1);
if (!@socket_bind($rrdp_client, $rrdp_config['address'], $rrdp_config['port_client'])) {
rrd_system__system_die(NL . 'Unable to bind socket to \'' . $rrdp_config['address'] . ':' . $rrdp_config['port_client'] . '\'' . NL . 'Error: ' . socket_strerror(socket_last_error()) . NL);
}
socket_set_nonblock($rrdp_client);
socket_listen($rrdp_client);
rrd_system__system_boolean_message('init: tcp client socket #' . $rrdp_client_resource_id, $rrdp_client, true);
rrdp_system__logging(LOGGING_LOCATION_BUFFERED, 'Start listening to port ' . $rrdp_config['address'] . ':' . $rrdp_config['port_client'], 'SYS', SEVERITY_LEVEL_NOTIFICATION);
$rrdp_clients = array();
$rrdp_ipc_sockets = array();
$rrdp_admin_sockets = array();
$rrdp_admin_clients = array();
$rrdp_ipc_server_sockets = array();
/* start RRDCached if configured */
if ($rrdp_config['path_rrdcached']) {
$current_working_directory = realpath('');
$rrdcached_cmd = $rrdp_config['path_rrdcached'] . ' -l unix:' . $current_working_directory . '/run/rrdcached.sock' . ' -w ' . $rrdp_config['rrdcache_update_cycle'] . ($rrdp_config['rrdcache_update_delay'] ? ' -z ' . $rrdp_config['rrdcache_update_delay'] : '') . ' -f ' . $rrdp_config['rrdcache_life_cycle'] . ' -p ' . $current_working_directory . '/run/rrdcached.pid' . ' -t ' . $rrdp_config['rrdcache_write_threads'] . ' -j ' . $current_working_directory . '/run/journal' . ' -B ' . $rrdp_config['path_rra'] . ' -O';
rrdp_system__logging(LOGGING_LOCATION_BUFFERED, 'Initiate RRDcached daemon system startup - ' . $rrdcached_cmd, 'SYS', SEVERITY_LEVEL_INFORMATIONAL);
$rrdcached = proc_open($rrdcached_cmd, [1 => ['pipe', 'w'], 2 => ['pipe', 'w']], $pipes);
$stdout = stream_get_contents($pipes[1]);
fclose($pipes[1]);
$stderr = stream_get_contents($pipes[2]);
fclose($pipes[2]);
proc_close($rrdcached);
/* Feedback from replicator required - let's wait for a sec */
usleep(1000000);
$rrdcached_pid = trim(file_get_contents($current_working_directory . '/run/rrdcached.pid'));
rrd_system__system_boolean_message('init: rrdcached daemon [PID: ' . $rrdcached_pid . ']', $rrdcached_pid, false);
if ($stderr)
rrdp_system__logging(LOGGING_LOCATION_BUFFERED, 'ERROR: RRDcached daemon - ' . $stderr, 'SYS', SEVERITY_LEVEL_ALERT);
if ($rrdcached_pid)
rrdp_system__logging(LOGGING_LOCATION_BUFFERED, 'STATUS: RRDcached daemon [PID: ' . $rrdcached_pid . '] running.', 'SYS', SEVERITY_LEVEL_NOTIFICATION);
} else {
$rrdcached_pid = 0;
}
/* start replication master */
#socket_create_pair(AF_UNIX, SOCK_STREAM, 0, $ipc_sockets);
#list($ipc_socket_parent, $ipc_socket_child) = $ipc_sockets;
#$key = intval($ipc_socket_child);
#$rrdp_repl_master_pid = handle_child_processes($ipc_sockets, 1, false);
#$rrdp_clients[$rrdp_repl_master_pid]['ip'] = '127.0.0.1';
#$rrdp_clients[$rrdp_repl_master_pid]['ipc'] = $key;
#$rrdp_clients[$rrdp_repl_master_pid]['type'] = 'M';
#$rrdp_ipc_sockets[$key] = $ipc_sockets;
/* start replication slaves */
#foreach($rrdp_config['remote_proxies'] as $proxy_ip => $proxy_settings) {
# socket_create_pair(AF_UNIX, SOCK_STREAM, 0, $ipc_sockets);
# list($ipc_socket_parent, $ipc_socket_child) = $ipc_sockets;
# $key = intval($ipc_socket_child);
# $rrdp_repl_slave_pid = handle_child_processes($ipc_sockets, 2, false, $proxy_ip);
# $rrdp_clients[$rrdp_repl_slave_pid]['ip'] = '127.0.0.1';
# $rrdp_clients[$rrdp_repl_slave_pid]['ipc'] = $key;
# $rrdp_clients[$rrdp_repl_slave_pid]['type'] = 'S';
# $rrdp_ipc_sockets[$key] = $ipc_sockets;
#}
$rrdp_replicator_pid = 'undefined';
/* Feedback from replicator required - let's wait for another sec */
usleep(1000000);
/* limit the number max. connections in relation to the number of open files this system supports */
exec('ulimit -n', $max_open_files);
$pid_of_php = getmypid();
exec("ls -l /proc/$pid_of_php/fd/ | wc -l", $open_files);
if ($max_open_files[0] == 'unlimited')
$max_open_files[0] = 1048576;
$rrdp_config['max_cnn'] = intval(($max_open_files[0] - $open_files[0]) / 2 - $rrdp_config['max_admin_cnn'] * 2 - 100); #use a buffer of 100 open files
/* return system info */
fwrite(STDOUT, rrdp_cmd__show_version($systemd) . NL);
/* signal the parent to exit - now we are up and ready */
@posix_kill($ppid, SIGUSR1);
/* create PID file for systemd */
if ($systemd) {
file_put_contents('./run/rrdtool-proxy.pid', posix_getpid());
}
/* ---------------------------- END - SYSTEM STARTUP ROUTINE ---------------------------- */
while ($__server_listening) {
$write = array();
$except = array();
$tv_sec = 2;
rrdp_msr__block_write();
rrdp_system__check();
/* setup clients listening to socket for reading */
$read = array();
/* #TODO do not listen to client connection requests as long as the system is not in state fully-synced */
if ($rrdp_config['last_sync'] !== false) {
$read[0] = $rrdp_client;
}
$read[1] = $rrdp_admin;
/* and then check child processes */
foreach ($rrdp_clients as $child_pid => $client) {
$child_status = pcntl_waitpid($child_pid, $status, WNOHANG);
if ($child_status == -1 || $child_status > 0) {
rrdp_system__logging(LOGGING_LOCATION_BUFFERED, 'REMOVAL OF PID [' . $child_pid . ']', 'SYS', SEVERITY_LEVEL_NOTIFICATION);
unset($rrdp_ipc_sockets[ $rrdp_clients[$child_pid]['ipc'] ]);
unset($rrdp_clients[$child_pid]);
} else {
$key = $rrdp_clients[$child_pid]['ipc'];
//rrdp_system__logging(LOGGING_LOCATION_BUFFERED, 'WAITING FOR ' . $child_pid, 'SYS', SEVERITY_LEVEL_ALERT);
if (isset($rrdp_ipc_sockets[$key]) && rrdp_system__is_resource($rrdp_ipc_sockets[$key][1])) {
$read[] = $rrdp_ipc_sockets[$key][1];
}
}
}
/* all admin connections need to be monitored for changes, too */
if(sizeof($rrdp_admin_clients) > 0 ) {
foreach ($rrdp_admin_clients as $rrdp_admin_client) {
$read[] = $rrdp_admin_client['socket'];
}
}
$ready = @socket_select($read, $write, $except, $tv_sec);
pcntl_signal_dispatch();
if ($ready) {
foreach ($read as $read_socket_index => $read_socket) {
$read_socket_resource_id = rrdp_system__get_resource_id($read_socket);
if ($read_socket_resource_id == $rrdp_client_resource_id) {
/* a default client is trying to connect */
if ($rrdp_config['max_cnn'] > __sizeof($rrdp_clients)) {
$socket_descriptor = socket_accept($read_socket);
socket_getpeername($socket_descriptor, $ip);
/* verify authorization */
if (array_key_exists($ip, $rrdp_config['remote_clients']) === true) {
/* setup IPC */
socket_create_pair(AF_UNIX, SOCK_STREAM, 0, $ipc_sockets);
list($ipc_socket_parent, $ipc_socket_child) = $ipc_sockets;
$socket_resource_id = rrdp_system__get_resource_id($ipc_socket_child);
/* fork a child process for that connection */
$pid = handle_child_processes($ipc_sockets, 3, $rrdp_client, $socket_descriptor);
$rrdp_clients[$pid]['ip'] = $ip;
$rrdp_clients[$pid]['ipc'] = $socket_resource_id;
$rrdp_clients[$pid]['type'] = 'C';
$rrdp_clients[$pid]['client_socket'] = $socket_descriptor;
$rrdp_ipc_sockets[$socket_resource_id] = $ipc_sockets;
rrdp_system__update('max_client_connections');
rrdp_system__logging(LOGGING_LOCATION_BUFFERED, '#' . $socket_resource_id . ' Default connection request [IP: ' . $ip . '] granted.', 'ACL', SEVERITY_LEVEL_DEBUG);
} else {
@socket_write($socket_descriptor, 'ERROR: Access denied.' . NL);
@socket_close($socket_descriptor);
rrdp_system__count('connections_refused');
rrdp_system__logging(LOGGING_LOCATION_BUFFERED, 'Client connection request [IP: ' . $ip . '] rejected.', 'ACL', SEVERITY_LEVEL_WARNING);
}
} else {
rrdp_system__logging(LOGGING_LOCATION_BUFFERED, 'Critical: Maximum number of client connections has been exhausted. Check system setup ("ulimit -n")!', 'SYS', SEVERITY_LEVEL_ALERT);
$socket_descriptor = socket_accept($read_socket);
@socket_write($socket_descriptor, 'ERROR: Too many open connections.' . NL);
@socket_close($socket_descriptor);
}
} elseif ($read_socket_resource_id == $rrdp_admin_resource_id) {
/* check if this is a new service client that is trying to connect */
if ($rrdp_config['max_admin_cnn'] > __sizeof($rrdp_admin_clients)) {
$socket_descriptor = socket_accept($read_socket);
/* check if the new client has the permission to connect */
socket_getpeername($socket_descriptor, $ip);
/* take care of IPv6, IPv4 and embedded IPv4 addresses */
if (in_array($ip, array('127.0.0.1', 'localhost', '::1', '::ffff:127.0.0.1'))) {
if (!in_array($socket_descriptor, $rrdp_admin_sockets)) {
$socket_resource_id = rrdp_system__get_resource_id($socket_descriptor);
$rrdp_admin_sockets[$socket_resource_id] = $socket_descriptor;
$rrdp_admin_clients[$socket_resource_id] = array('socket' => $socket_descriptor, 'ip' => $ip, 'privileged' => false, 'logging_severity_console' => $rrdp_config['logging_severity_terminal'], 'logging_category_console' => $rrdp_config['logging_category_terminal'], 'debug' => false, 'type' => 'srv');
socket_write($socket_descriptor, rrdp_get_cacti_proxy_logo() . NL . NL);
socket_Write($socket_descriptor, RRDP_VERSION_FULL);
socket_write($socket_descriptor, ANSI_RESET . ANSI_GREEN_FG . $rrdp_config['name'] . '>' . ANSI_RESET . ' ');
rrdp_system__update('max_admin_connections');
rrdp_system__logging(LOGGING_LOCATION_BUFFERED, '#' . $socket_resource_id . ' Service connection request [IP: ' . $ip . '] granted.', 'ACL', SEVERITY_LEVEL_DEBUG);
}
} elseif ($ip == $rrdp_config['slave']) {
$socket_resource_id = rrdp_system__get_resource_id($socket_descriptor);
$rrdp_admin_sockets[$socket_resource_id] = $socket_descriptor;
$rrdp_admin_clients[$socket_resource_id] = array('socket' => $socket_descriptor, 'ip' => $ip, 'privileged' => false, 'debug' => false, 'type' => 'msr');
rrdp_system__logging(LOGGING_LOCATION_BUFFERED, '#' . $socket_resource_id . ' RRDtool-Proxy slave connection request [IP: ' . $ip . '] granted.', 'ACL', SEVERITY_LEVEL_INFORMATIONAL);
} else {
@socket_write($socket_descriptor, 'ERROR: Access denied.' . NL);
@socket_close($socket_descriptor);
rrdp_system__count('connections_refused');
rrdp_system__logging(LOGGING_LOCATION_BUFFERED, '#[n/a] Service connection request [IP: ' . $ip . '] rejected.', 'ACL', SEVERITY_LEVEL_WARNING);
break;
}
} else {
rrdp_system__logging(LOGGING_LOCATION_BUFFERED, 'Critical: Maximum number of admin connections has been exhausted. Check system setup ("ulimit -n")!', 'SYS', SEVERITY_LEVEL_ALERT);
$socket_descriptor = socket_accept($read_socket);
@socket_write($socket_descriptor, 'ERROR: Maximum number of service connections has been exceeded.' . NL);
@socket_close($socket_descriptor);
}
} elseif ($rrdp_replicator_pid !== 'undefined' AND $read_socket_resource_id == $rrdp_clients[$rrdp_replicator_pid]['ipc']) {
/* === REPLICATOR IPC message === */
$input = '';
/* handle IPC with the replicator separately */
while (1) {
$recv = socket_read($read_socket, 100000, PHP_BINARY_READ);
if ($recv === false) {
/* replicator connection timeout */
rrdp_system__count('connections_timeout');
rrdp_system__logging(LOGGING_LOCATION_BUFFERED, 'IPC connection timeout to REPLICATOR detected.', 'IPC', SEVERITY_LEVEL_CRITICAL);
/* close IPC child socket */
break;
} elseif ($recv == '') {
/* session closed by replicator */
if ($input) {
rrdp_system__replicator($input);
rrdp_system__logging(LOGGING_LOCATION_BUFFERED, 'IPC connection closed by REPLICATOR', 'IPC', SEVERITY_LEVEL_WARNING);
}
break;
} else {
$input .= $recv;
if (substr($input, -1) == "\n") {
rrdp_system__replicator($input);
continue 2;
} else {
continue;
}
}
}
} else {
/* handle established connections */
if (isset($rrdp_ipc_sockets[$read_socket_resource_id])) {
/* === CLIENT IPC message === */
$input = '';
while (1) {
$recv = socket_read($read_socket, 100000, PHP_BINARY_READ);
if ($recv === false) {
/* timeout */
rrdp_system__count('connections_timeout');
rrdp_system__logging(LOGGING_LOCATION_BUFFERED, '#' . $read_socket_resource_id . ' IPC connection timeout detected.', 'IPC', SEVERITY_LEVEL_CRITICAL);
/* close IPC child socket */
break;
} elseif ($recv == '') {
/* session closed by child process */
if ($input) {
rrdp_system__client($input);
rrdp_system__logging(LOGGING_LOCATION_BUFFERED, '#' . $read_socket_resource_id . ' IPC connection closed by child process', 'IPC', SEVERITY_LEVEL_DEBUG);
}
@socket_close($read_socket);
break;
} else {
$input .= $recv;
if (substr($input, -1) == "\n") {
rrdp_system__client($input);
continue 2;
} else {
continue;
}
}
}
unset($rrdp_ipc_sockets[$read_socket_resource_id]);
continue;
} elseif (isset($rrdp_admin_sockets[$read_socket_resource_id])) {
/* === this is a service connection - means default or master-slave === */
$recv = @socket_read($read_socket, 100000, PHP_BINARY_READ);
rrdp_system__count('srv_bytes_received', rrdp_system__calc_bytes($recv));
if ($recv === false) {
/* connection lost :( */
socket_shutdown($read_socket);
socket_close($read_socket);
rrdp_system__count('srv_connection_broken');
unset($rrdp_admin_clients[$read_socket_resource_id]);
continue;
} elseif ($recv == "\n") {
/* end of transmission */
} elseif ($recv) {
if (isset($options))
unset($options);
$recv = trim($recv);
if (strpos($recv, ' ') !== false) {
/* correct multiple blanks in sequence automatically as well as tabs */
$recv = preg_replace('/[[:blank:]]+/', ' ', $recv);
$recv = str_replace("\t", '', $recv);
$options = explode(' ', $recv, 2);
$cmd = $options[0];
$cmd_options = explode(' ', $options[1]);
} else {
$cmd = $recv;
$cmd_options = array();
}
/* this is a standard service client */
if ($cmd) {
rrdp_system__count('queries_system');
$root = $rrdp_help_messages['?'][(($rrdp_admin_clients[$read_socket_resource_id]['privileged']) ? 1 : 0)];
if (isset($rrdp_aliases[$cmd])) {
/* replace aliases */
$cmd = $rrdp_aliases[$cmd];
} else {
/* try auto-completion if necessary */
if (!isset($root[$cmd]) && strlen($cmd)>=2) {
$found = false;
foreach($root as $root_key => $root_value ) {
if ( strpos($root_key, $cmd) === 0) {
if ($found === false) {
$found = $root_key;
} else {
/* two or more candidates available */
rrdp_system__socket_write($read_socket, "% Unspecific command \"$cmd\" - use \"?\" for a list of valid commands." . NL);
rrdp_system__return_prompt($read_socket);
continue 2;
}
}
}
$cmd = ($found === false ) ? $cmd : $found;
}
}
if ($cmd != 'list') {
/* verify if permissions are ok before going on*/
if ( !isset($root[$cmd] )) {
rrdp_system__socket_write($read_socket, '% Unrecognized command' . NL);
rrdp_system__return_prompt($read_socket);
continue;
}
if (is_array($cmd_options)) {
$root = $root[$cmd];
/* Use auto-completion for parameters if possible */
foreach ($cmd_options as $cmd_option_index => $cmd_option_value) {
if ($cmd_option_value == '?') {
if (isset($root['?'])) {
rrdp_cmd__list($read_socket, array_slice( $cmd_options, $cmd_option_index+1), $root );
} else {
rrdp_system__socket_write($read_socket, ' | Output modifiers' . NL);
}
rrdp_system__return_prompt($read_socket);
break 2;
} elseif (isset($root['?'])) {
if (strlen($cmd_option_value) >= 2) {
$found = false;
foreach($root['?'] as $root_key => $root_value ) {
if ( strpos($root_key, $cmd_option_value) === 0) {
if ($found === false) {
$found = $root_key;
} else {
/* two or more candidates available */
rrdp_system__socket_write($read_socket, "% Unspecific argument \"$cmd_option_value\" - use \"?\" for a list of valid commands." . NL);
continue 2;
}
}
}
if ($found) {
$cmd_options[$cmd_option_index] = $found;
$root = $root['?'][$found];
continue;
}
} else {
if (isset($root['?'][$cmd_option_value])) {
$root = $root['?'][$cmd_option_value];
continue;
}
}
} else {
/* output filter flags */
}
}
}
}
if (function_exists('rrdp_cmd__' . $cmd) ) {
/* valid main function call */
$rrdp_function = 'rrdp_cmd__' . $cmd;
$rrdp_function($read_socket, $cmd_options);
} else {
/* unknown command */
rrdp_system__socket_write($read_socket, '% Unrecognized command' . NL);
}
}
/* return prompt */
rrdp_system__return_prompt($read_socket);
} else {
socket_close($rrdp_admin_client['socket']);
unset($rrdp_admin_clients[$read_socket_resource_id]);
rrdp_system__count('aborted_clients');
continue;
}
}
}
}
} else {
continue;
}
}
/* #################################### MSR FUNCTIONS #################################### */
function rrdp_msr__block_write() {
global $rrdp_config, $rrdp_msr_buffer;
$current_time = time();
$current_timeframe = $current_time + $current_time % 10;
if (__sizeof($rrdp_config['remote_proxies']) > 0) {
if (__sizeof($rrdp_msr_buffer) > 0) {
foreach ($rrdp_msr_buffer as $timeframe => $msr_commands) {
if ($timeframe < $current_timeframe) {
$buffer = '';
foreach ($msr_commands as $id => $cmd) {
$buffer .= $id . "\t" . $cmd . NL;
}
//$buffer = gzencode($buffer,1);
foreach ($rrdp_config['remote_proxies'] as $ip => $fingerprint) {
$msr_sub_folder = './msr/' . $ip;
if (!is_dir($msr_sub_folder))
mkdir($msr_sub_folder);
$fp = fopen($msr_sub_folder . '/' . $timeframe, 'a');
fwrite($fp, $buffer);
}
unset($rrdp_msr_buffer[$timeframe]);
}
}
}
} else {
/* clear msr buffer */
$rrdp_msr_buffer = array();
}
return;
}
/* #################################### INTERNAL FUNCTIONS #################################### */
function rrdp_system__check() {
global $rrdp_config, $rrdp_status;
$current_time = time();
$first_run = false;
if (!isset($rrdp_config['last_system_check'])) {
$rrdp_config['last_system_check'] = $current_time;
$first_run = true;
}
if ($first_run || $rrdp_config['last_system_check'] < ($current_time - 30)) {
/* Status - Filesystem RRA */
if (is_dir($rrdp_config['path_rra'])) {
$rra_disk_status = shell_exec('df --block-size=1048576 ' . $rrdp_config['path_rra'] . " | sed 1d | awk '{printf \"size:\" $2 \" used:\" $3 \" avail:\" $4}'");
$disk_states = explode(' ', $rra_disk_status);
if (is_array($disk_states) && __sizeof($disk_states) > 0) {
foreach ($disk_states as $disk_state) {
list($type, $value) = explode(':', $disk_state);
if (isset($rrdp_status['rra_disk_' . $type])) {
$rrdp_status['rra_disk_' . $type] = $value;
}
}
if ( $rrdp_status['rra_disk_size'] && $rrdp_status['rra_disk_avail'] ) {
$ratio = $rrdp_status['rra_disk_avail']/$rrdp_status['rra_disk_size'];
if ( $ratio <= 0.1 ) {
rrdp_system__logging(LOGGING_LOCATION_BUFFERED, 'RRA disk usage threshold of 90% with '. intval($ratio*100) . '% exceeded', 'SYS', SEVERITY_LEVEL_CRITICAL);
#TODO - SNMPTrap
} elseif ($ratio <= 0.15 ) {
rrdp_system__logging(LOGGING_LOCATION_BUFFERED, 'RRA disk usage threshold of 85% with '. intval($ratio*100) . '% exceeded', 'SYS', SEVERITY_LEVEL_ALERT);
#TODO - SNMPTrap
} elseif ($ratio <= 0.25 ) {
rrdp_system__logging(LOGGING_LOCATION_BUFFERED, 'RRA disk usage threshold of 75% with '. intval($ratio*100) . '% exceeded', 'SYS', SEVERITY_LEVEL_WARNING);
#TODO - SNMPTrap
}
}
}
}
/* Status - Filesystem MSR */
$msr_disk_status = shell_exec("df --block-size=1048576 ./msr | sed 1d | awk '{printf \"size:\" $2 \" used:\" $3 \" avail:\" $4}'");
$disk_states = explode(' ', $msr_disk_status);
if (is_array($disk_states) && __sizeof($disk_states) > 0) {
foreach ($disk_states as $disk_state) {
list($type, $value) = explode(':', $disk_state);
if (isset($rrdp_status['msr_disk_' . $type])) {
$rrdp_status['msr_disk_' . $type] = $value;
}
}
}
if ( $rrdp_status['msr_disk_size'] && $rrdp_status['msr_disk_avail'] ) {
$ratio = $rrdp_status['msr_disk_avail']/$rrdp_status['msr_disk_size'];
if ( $ratio <= 0.1 ) {
rrdp_system__logging(LOGGING_LOCATION_BUFFERED, 'MSR disk usage threshold of 90% with '. intval($ratio*100) . '% exceeded', 'SYS', SEVERITY_LEVEL_CRITICAL);
#TODO - SNMPTrap
} elseif ($ratio <= 0.15 ) {
rrdp_system__logging(LOGGING_LOCATION_BUFFERED, 'MSR disk usage threshold of 85% with '. intval($ratio*100) . '% exceeded', 'SYS', SEVERITY_LEVEL_ALERT);
#TODO - SNMPTrap
} elseif ($ratio <= 0.25 ) {
rrdp_system__logging(LOGGING_LOCATION_BUFFERED, 'MSR disk usage threshold of 75% with '. intval($ratio*100) . '% exceeded', 'SYS', SEVERITY_LEVEL_WARNING);
#TODO - SNMPTrap
}
}
$rrdp_config['last_system_check'] = $current_time;
}
return;
}
function rrdp_system__encryption_init() {
global $rrdp_config;
$rsa = new RSA();
if (!file_exists('./include/public.key') || !file_exists('./include/private.key')) {
$keys = $rsa -> createKey(2048);
$rrdp_config['encryption']['public_key'] = $keys['publickey'];
$rrdp_config['encryption']['private_key'] = $keys['privatekey'];
file_put_contents('./include/public.key', $rrdp_config['encryption']['public_key']);
file_put_contents('./include/private.key', $rrdp_config['encryption']['private_key']);
}
$rrdp_config['encryption']['public_key'] = file_get_contents('./include/public.key');
rrd_system__system_boolean_message('init: RSA public key', $rrdp_config['encryption']['public_key'], true);
$rrdp_config['encryption']['private_key'] = file_get_contents('./include/private.key');
rrd_system__system_boolean_message('init: RSA private key', $rrdp_config['encryption']['private_key'], true);
$rsa -> loadKey($rrdp_config['encryption']['public_key']);
$rrdp_config['encryption']['public_key_fingerprint'] = $rsa -> getPublicKeyFingerprint();
}
function rrdp_system__replicator($input) {
global $rrdp_client, $rrd_config;
$status = @unserialize($input);
if ($status !== false && $status['type']) {
switch($status['type']) {
case 'debug' :
rrdp_system__logging($status['debug']['location'], $status['debug']['msg'], $status['debug']['category'], $status['debug']['severity']);
break;
case 'status' :
if ($status['status'] == 'running') {
@socket_listen($rrdp_client);
} elseif ($status['status'] == 'synchronizing') {
@socket_shutdown($rrdp_client);
}
break;
default :
#TODO undefined state
break;
}
} else {
/* internal IPC error */
#TODO
}
}
function rrdp_system__client(&$input) {
global $rrdp_msr_buffer;
$status = @unserialize($input);
if ($status !== false && $status['type']) {
if ($status['type'] == 'debug') {
rrdp_system__logging($status['debug']['location'], $status['debug']['msg'], $status['debug']['category'], $status['debug']['severity']);
}
if (isset($status['msr_commands'])) {
foreach ($status['msr_commands'] as $timeframe => $msr_commands) {
if (!isset($rrdp_msr_buffer[$timeframe])) {
$rrdp_msr_buffer[$timeframe] = array();
}
$rrdp_msr_buffer[$timeframe] += $msr_commands;
}
}
foreach ($status as $status_variable => $status_value) {
rrdp_system__count($status_variable, $status_value);
}
switch($status['status']) {
case 'CLOSEDOWN_BY_SIGNAL' :
case 'CLOSEDOWN_BY_TIMEOUT' :
case 'CLOSEDOWN_BY_VIOLATION' :
case 'CLOSEDOWN_BY_CLIENT_CMD' :
case 'CLOSEDOWN_BY_CLIENT_DROP' :
case 'CLOSEDOWN_BY_CLIENT_AUTH' :
case 'CLOSEDOWN_BY_ENCRYPTION' :
rrdp_system__count('proc_' . strtolower($status['status']));
break;
default :
/* process is still running */
break;
}
}
}
function rrd_system__system_die($msg = '') {
global $ppid;
if (!trim($msg))
rrdp_system__logging(LOGGING_LOCATION_BUFFERED, $msg, 'SYS', SEVERITY_LEVEL_EMERGENCY);
if ($ppid)
@posix_kill($ppid, SIGTERM);
die($msg);
}
function rrd_system__system_boolean_message($msg, $boolean_state, $exit = false, $skip = false) {
global $colors, $microtime_start, $systemd;
$microtime_end = microtime(true);
$color = $skip ? $colors['warning'] : ($boolean_state ? $colors['normal'] : (($exit == true) ? $colors['error'] : $colors['warning']));
$status = $skip ? '[SKIPPED]' : ($boolean_state ? '[OK]' : '[FAILED]');
$max_msg_length = 80 - 10 - strlen($status) - 1;
if (strlen($msg) > $max_msg_length)
$msg = substr($msg, 0, $max_msg_length - 3) . '...';
if ($systemd === false) {
fwrite(STDOUT, sprintf(NL . "[%.5f] %-{$max_msg_length}s " . ANSI_RESET . "{$color}%s" . ANSI_RESET, ($microtime_end - $microtime_start), $msg, $status));
}
if ($skip == false && $boolean_state == false && $exit == true ) {
rrdp_system__logging(LOGGING_LOCATION_BUFFERED, $msg, 'SYS', SEVERITY_LEVEL_CRITICAL);
if ($systemd === true) {
fwrite(STDOUT, sprintf(NL . "[%.5f] %-{$max_msg_length}s " . ANSI_RESET . "{$color}%s" . ANSI_RESET, ($microtime_end - $microtime_start), $msg, $status));
}
rrd_system__system_die(NL);
} else {
if(!defined('WIZARD_RUNNING'))
rrdp_system__logging(LOGGING_LOCATION_BUFFERED, $status . ' ' . $msg, 'SYS', SEVERITY_LEVEL_INFORMATIONAL);
}
}
function rrdp_system__calc_bytes($str) {
return (ini_get('mbstring.func_overload') ? mb_strlen($str, '8bit') : strlen($str));
}
function rrdp_system__count($variable, $value = 1) {
global $rrdp_status;
if (isset($rrdp_status[$variable])) {
/* use 32 bit counters only */
$rrdp_status[$variable] = (($rrdp_status[$variable] + $value) >= 2147483647) ? $rrdp_status[$variable] - 2147483647 + $value : $rrdp_status[$variable] + $value;
return true;
}
return false;
}
function rrdp_system__update($variable) {
global $rrdp_admin_clients, $rrdp_clients, $rrdp_status;
switch($variable) {
case 'max_admin_connections' :
if (__sizeof($rrdp_admin_clients) > $rrdp_status[$variable]) {
$rrdp_status[$variable] = __sizeof($rrdp_admin_clients);
}
break;
case 'max_client_connections' :
if (__sizeof($rrdp_clients) > $rrdp_status[$variable]) {
$rrdp_status[$variable] = __sizeof($rrdp_clients);
}
break;
}
return;
}
function rrdp_system__return_prompt($socket) {
global $rrdp_admin_clients, $rrdp_config, $colors;
$socket_resource_id = rrdp_system__get_resource_id($socket);
if(array_key_exists($socket_resource_id, $rrdp_admin_clients)) {
$prompt = ANSI_RESET . (($rrdp_admin_clients[$socket_resource_id]['debug']) ? $colors['debug'] : $colors['prompt']) . $rrdp_config['name'] . (($rrdp_admin_clients[$socket_resource_id]['privileged']) ? '#' : '>') . ANSI_RESET . ' ';
rrdp_system__socket_write($socket, $prompt);
}
}
function rrdp_system__socket_write($socket, $output, $counter = '') {
if ($return = @socket_write($socket, $output, strlen($output))) {
if ($counter) {
rrdp_system__count($counter, rrdp_system__calc_bytes($output));
}
}
return $return;
}
function rrdp_system__socket_close($socket, $msg = false, $force = false) {
if ($msg) {
rrdp_system__socket_write($socket, $msg);
}
if ($force) {
$linger = array ('l_linger' => 0, 'l_onoff' => 1);
socket_set_option($socket, SOL_SOCKET, SO_LINGER, $linger);
@socket_close($socket);
} else {
@socket_shutdown($socket, 2);
@socket_close($socket);
}
return true;
}
function rrdp_system__status_live($variable) {
global $rrdp_admin_clients, $rrdp_ipc_sockets, $rrdp_config;
$status = 'n/a';
switch($variable) {
case 'threads_connected' :
$status = __sizeof($rrdp_admin_clients);
break;
case 'uptime' :
$status = microtime(true) - $rrdp_config['start'];
break;
case 'memory_usage' :
$status = memory_get_usage();
break;
case 'memory_peak_usage' :
$status = memory_get_peak_usage();
break;
case 'connections_open' :