400 lines
15 KiB
Perl
Executable File
400 lines
15 KiB
Perl
Executable File
#!/usr/bin/perl
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##########################################################################
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# Pandora FMS Plugin Server
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# http://www.pandorafms.com
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##########################################################################
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# Copyright (c) 2008-2009 Sancho Lerena, slerena@gmail.com
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# (c) 2008-2009 Artica Soluciones Tecnologicas S.L
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; version 2.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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##########################################################################
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# Includes list
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use strict;
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use warnings;
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use Date::Manip; # Needed to manipulate DateTime formats of input, output and compare
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use Time::Local; # DateTime basic manipulation
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use threads;
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use threads::shared;
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use HTML::Entities;
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# Pandora Modules
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use PandoraFMS::Config;
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use PandoraFMS::Tools;
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use PandoraFMS::DB;
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# Queue management
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my @pending_task : shared;
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my %pending_task_hash : shared;
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my %current_task_hash : shared;
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my $queue_lock : shared;
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# FLUSH in each IO (only for debug, very slooow)
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# ENABLED in DEBUGMODE
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# DISABLE FOR PRODUCTION
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$| = 0;
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my %pa_config;
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$SIG{'TERM'} = 'pandora_shutdown';
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$SIG{'INT'} = 'pandora_shutdown';
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# Inicio del bucle principal de programa
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pandora_init(\%pa_config, "Pandora FMS Plugin Server");
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# Check for pandora_exec
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my $pandora_exec = "pandora_exec";
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if (system("$pandora_exec > /dev/null 2>&1") != 256) {
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print " [E] $pandora_exec not found.\n\n";
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exit;
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}
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# Read config file for Global variables
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pandora_loadconfig (\%pa_config, 4);
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# Audit server starting
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pandora_audit (\%pa_config, "Pandora FMS Plugin server starting", "SYSTEM", "System");
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# Daemonize and put in background
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if ( $pa_config{"daemon"} eq "1" ){
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if ($pa_config{"quiet"} eq "0"){
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print " [*] Backgrounding Pandora FMS Plugin Server process.\n\n";
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}
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&pandora_daemonize ( \%pa_config);
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}
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# Launch now all plugin threads
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# $ax is local thread id for this server
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for (my $ax=0; $ax < $pa_config{'plugin_threads'}; $ax++){
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threads->new( \&pandora_plugin_consumer, \%pa_config, $ax);
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}
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# Launch now the producer thread
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threads->new( \&pandora_plugin_producer, \%pa_config);
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# Last thread is the main process (this process)
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if ($pa_config{"quiet"} == 0){
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print " [*] All threads loaded and running \n\n";
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}
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# Start Pandora FMS loggin
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pandora_startlog (\%pa_config);
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my $dbhost = $pa_config{'dbhost'};
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my $dbname = $pa_config{'dbname'};
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my $dbh = DBI->connect("DBI:mysql:$dbname:$dbhost:3306",
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$pa_config{'dbuser'},
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$pa_config{'dbpass'},
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{ RaiseError => 1, AutoCommit => 1 });
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# Server keepalive thread running in main thread on a infinite loop
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while (1) {
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pandora_serverkeepaliver (\%pa_config, 4, $dbh);
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threads->yield;
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sleep ($pa_config{"server_threshold"});
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}
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#------------------------------------------------------------------------------------
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#------------------------------------------------------------------------------------
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#------------------------------------------------------------------------------------
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#--------------------- Main Perl Code below this line-----------------------
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#------------------------------------------------------------------------------------
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#------------------------------------------------------------------------------------
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#------------------------------------------------------------------------------------
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########################################################################################
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# pandora_shutdown ()
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# Close system
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########################################################################################
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sub pandora_shutdown {
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logger (\%pa_config,"Pandora FMS Server '".$pa_config{'servername'}.$pa_config{"servermode"}."' Shutdown by signal ",0);
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print " [*] Shutting down ".$pa_config{'servername'}.$pa_config{"servermode"} ."(received signal)...\n";
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pandora_event (\%pa_config, $pa_config{'servername'}.$pa_config{"servermode"}." going Down", 0,
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0, 4, 0, 0, "system", $dbh);
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pandora_updateserver (\%pa_config, $pa_config{'servername'}, 0, 4, $dbh);
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exit;
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}
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##########################################################################
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# SUB pandora_plugin_consumer_subsystem
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# Subsystem to process Plugin modules
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# This module runs each X seconds (server threshold) checking for Plugin modules status
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##########################################################################
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sub pandora_plugin_consumer ($$) {
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my $pa_config = $_[0];
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my $thread_id = $_[1];
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if ($pa_config->{"quiet"} == 0){
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print " [*] Starting up Plugin Consumer Thread # $thread_id \n";
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}
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my $data_id_agent_module;
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# Create Database handler
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my $dbh = DBI->connect("DBI:mysql:$pa_config->{'dbname'}:$pa_config->{'dbhost'}:3306", $pa_config->{'dbuser'}, $pa_config->{'dbpass'}, { RaiseError => 1, AutoCommit => 1 });
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my $counter =0;
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LOOP: while (1) {
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if ($counter > 10) {
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threads->yield;
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sleep (1);
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$counter = 0;
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}
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# Take the first element on the shared queue
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# Insert this element on the current task hash
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{
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lock $queue_lock;
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if (scalar(@pending_task) == 0){
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$counter++;
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next LOOP;
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}
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$data_id_agent_module = shift(@pending_task);
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delete($pending_task_hash{$data_id_agent_module});
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$current_task_hash{$data_id_agent_module}=1;
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}
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# Executing network task with unmanaged error trapping
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eval {
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# Call network execution process
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# exec_network_module ( $pa_config, $data_id_agent_module, $dbh);
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exec_plugin_module ($pa_config, $data_id_agent_module, $dbh);
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};
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if ($@){
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logger ($pa_config, "[ERROR] Plugin Task for module $data_id_agent_module causes a system exception", 0);
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logger ($pa_config, "ERROR Code: $@", 1);
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}
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# Remove from queue. If catch an error, probably data is
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# not been processed, but has been freed from task queue
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{
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lock $queue_lock;
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delete($current_task_hash{$data_id_agent_module});
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}
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$counter = 0;
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threads->yield;
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}
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}
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sub pandora_plugin_producer ($) {
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my $pa_config = $_[0];
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print " [*] Starting up Plugin Producer Thread ...\n";
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my $dbh = DBI->connect("DBI:mysql:$pa_config->{'dbname'}:$pa_config->{'dbhost'}:3306", $pa_config->{'dbuser'}, $pa_config->{'dbpass'}, { RaiseError => 1, AutoCommit => 1 });
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my $server_id = $pa_config->{'server_id'};
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# Initialize variables for posterior usage
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my $query1;
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my @sql_data1;
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my $data_id_agente_modulo;
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my $data_flag;
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my $exec_sql1;
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while (1) {
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if ($pa_config->{"pandora_master"} != 1) {
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# Query for normal server, not MASTER server
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$query1 = "SELECT
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tagente_modulo.id_agente_modulo,
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tagente_modulo.flag
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UNIX_TIMESTAMP() - tagente_estado.current_interval - tagente_estado.last_execution_try AS time_left
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FROM
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tagente, tagente_modulo, tagente_estado
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WHERE
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id_plugin_server = $server_id
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AND
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tagente_modulo.id_agente = tagente.id_agente
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AND
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tagente.disabled = 0
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AND
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tagente_modulo.id_plugin != 0
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AND
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tagente_modulo.disabled = 0
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AND
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tagente_estado.id_agente_modulo = tagente_modulo.id_agente_modulo
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AND (
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tagente_modulo.flag = 1
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OR
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(tagente_estado.last_execution_try + tagente_estado.current_interval) < UNIX_TIMESTAMP()
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)
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ORDER BY
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tagente_modulo.flag DESC, time_left DESC, last_execution_try ASC ";
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} else {
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# Query for MASTER SERVER !
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$query1 = "SELECT
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DISTINCT(tagente_modulo.id_agente_modulo), tagente_modulo.flag, UNIX_TIMESTAMP() - tagente_estado.current_interval - tagente_estado.last_execution_try AS time_left
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FROM
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tagente, tagente_modulo, tagente_estado
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WHERE
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( (tagente.id_plugin_server = $server_id) OR
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(tagente.id_plugin_server = ANY(SELECT id_server FROM tserver WHERE status = 0 AND id_server != $server_id AND plugin_server = 1))
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)
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AND
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tagente_modulo.id_agente = tagente.id_agente
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AND
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tagente.disabled = 0
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AND
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tagente_modulo.disabled = 0
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AND
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tagente_modulo.id_plugin != 0
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AND
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tagente_estado.id_agente_modulo = tagente_modulo.id_agente_modulo
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AND
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(tagente_modulo.flag = 1 OR (tagente_estado.last_execution_try + tagente_estado.current_interval) < UNIX_TIMESTAMP() )
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ORDER BY
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tagente_modulo.flag DESC, time_left DESC, last_execution_try ASC";
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}
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$exec_sql1 = $dbh->prepare($query1);
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$exec_sql1 ->execute;
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while (@sql_data1 = $exec_sql1->fetchrow_array()) {
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$data_id_agente_modulo = $sql_data1[0];
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$data_flag = $sql_data1[1];
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# Skip modules already queued
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if ((!defined($pending_task_hash{$data_id_agente_modulo})) &&
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(!defined($current_task_hash{$data_id_agente_modulo}))) {
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if ($data_flag == 1){
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$dbh->do("UPDATE tagente_modulo SET flag = 0 WHERE id_agente_modulo = $data_id_agente_modulo")
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}
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# Locking scope, do not remove redundant { }
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{
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lock $queue_lock;
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push (@pending_task, $data_id_agente_modulo);
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$pending_task_hash {$data_id_agente_modulo}=1;
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}
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}
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}
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$exec_sql1->finish();
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threads->yield;
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sleep($pa_config->{"server_threshold"});
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} # Main loop
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}
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##########################################################################
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# SUB exec_plugin_module (paconfig, id_agente_modulo, dbh )
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# Execute plugin module task
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##########################################################################
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sub exec_plugin_module {
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my $pa_config = $_[0];
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my $id_am = $_[1];
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my $dbh = $_[2];
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# Set global variables for this sub
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my $timeout = $pa_config->{'plugin_timeout'};
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my $agent_module; # hash container for tagente_modulo record
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my $plugin; # hash container for tplugin
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# Get a full hash for agent_plugin record reference ($agent_module)
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my $query_sql = "SELECT * FROM tagente_modulo WHERE id_agente_modulo = $id_am";
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my $exec_sql = $dbh->prepare($query_sql);
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$exec_sql ->execute;
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$agent_module = $exec_sql->fetchrow_hashref;
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# Get a full hash for plugin record reference ($plugin)
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$query_sql = "SELECT * FROM tplugin WHERE id = ".$agent_module->{'id_plugin'};
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$exec_sql = $dbh->prepare($query_sql);
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$exec_sql->execute();
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$plugin = $exec_sql->fetchrow_hashref;
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# Calculate min timeout for this call
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if ($plugin->{'max_timeout'} < $timeout){
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$timeout = $plugin->{'max_timeout'};
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}
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# Initialize another global sub variables.
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my $agent_name = dame_agente_nombre ($pa_config, $agent_module->{'id_agente'}, $dbh);
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my $module_data = 0; # 0 data for default
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my $module_interval = 0;
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# Build execution command to plugin
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my $exec_output = "";
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my $plugin_command = $plugin->{"execute"};
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if ($plugin->{'net_dst_opt'} ne ""){
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$plugin_command = $plugin_command . " ". $plugin->{'net_dst_opt'} ." ". $agent_module->{'ip_target'};
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}
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if ($plugin->{'net_port_opt'} ne "") {
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$plugin_command = $plugin_command . " ". $plugin->{'net_port_opt'} ." ". $agent_module->{'tcp_port'};
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}
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if ($plugin->{'user_opt'} ne "") {
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$plugin_command = $plugin_command . " ". $plugin->{'user_opt'} ." ". $agent_module->{'plugin_user'};
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}
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if ($plugin->{'pass_opt'} ne "") {
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$plugin_command = $plugin_command . " ". $plugin->{'pass_opt'} ." ". $agent_module->{'plugin_pass'};
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}
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# Proccess field / optional / dynamic field
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if ($agent_module->{'plugin_parameter'} ne "") {
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$plugin_command = $plugin_command . " ". $agent_module->{'plugin_parameter'};
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}
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$plugin_command = decode_entities($plugin_command);
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logger ($pa_config, "Executing AM # $id_am plugin command '$plugin_command'", 9);
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# Final command line execution is stored at "plugin_command"
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$module_data = `$pandora_exec $timeout $plugin_command`;
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if ($module_data eq "") {
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update_on_error ($pa_config, $id_am, $dbh);
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undef $plugin;
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undef $agent_module;
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return;
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}
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# Get current timestamp
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my $timestamp = &UnixDate("today","%Y-%m-%d %H:%M:%S");
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my $utimestamp = &UnixDate("today","%s");
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my %part;
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$part{'name'}[0] = $agent_module->{'nombre'};
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$part{'description'}[0] = "";
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$part{'data'}[0] = $module_data;
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my $tipo_modulo = dame_nombretipomodulo_idagentemodulo ($pa_config, $agent_module->{'id_tipo_modulo'}, $dbh);
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# 1 - generic_data
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# 2 - generic_proc
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# 3 - generic_data_string
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# 4 - generic_data_inc
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# 19, 20 - image
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if (1 == $agent_module->{'id_tipo_modulo'}) {
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module_generic_data ($pa_config, \%part, $timestamp, $agent_name, $tipo_modulo, $dbh);
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}
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elsif (4 == $agent_module->{'id_tipo_modulo'}) {
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module_generic_data_inc ($pa_config, \%part, $timestamp, $agent_name, $tipo_modulo, $dbh);
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}
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elsif (3 == $agent_module->{'id_tipo_modulo'}) {
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module_generic_data_string ($pa_config, \%part, $timestamp, $agent_name, $tipo_modulo, $dbh);
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}
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# Generic_proc
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elsif (2 == $agent_module->{'id_tipo_modulo'}) {
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module_generic_proc ($pa_config, \%part, $timestamp, $agent_name, $tipo_modulo, $dbh);
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}
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elsif ( (19 == $agent_module->{'id_tipo_modulo'}) || (20 == $agent_module->{'id_tipo_modulo'}) ) {
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module_generic_image ($pa_config, \%part, $timestamp, $agent_name, $tipo_modulo, $dbh);
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}
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else { # Unknown module!, this IS a problem
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logger ($pa_config, "Plugin Server Problem with unknown module type '$tipo_modulo'", 0);
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}
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# Update agent last contact
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# Insert Pandora version as agent version
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pandora_lastagentcontact ($pa_config, $timestamp, $agent_name, $pa_config->{'servername'}.$pa_config->{"servermode"}, $pa_config->{'version'}, -1, $dbh);
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$exec_sql->finish(); #close tagent_plugin hash reference
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undef $plugin;
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undef $agent_module;
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undef %part;
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}
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