mirror of
https://github.com/pandorafms/pandorafms.git
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3b5cf09fb9
* lib/Core.pm: get_agent_from_addr() function is now in Core because
is used in trap alert functions. Implemented in pandora_execute_action()
the internal command "Generate event" was missing. Also altered the
way a complex trap is matched, now search for Value, Custom Value and
Custom OID. If an action containing a "event" command is the target, skip the
creation of a event to inform of SNMP alert firing.
* lib/ReconServer.pm: get_agent_from_addr() moved to Core.pm
git-svn-id: https://svn.code.sf.net/p/pandora/code/trunk@4731 c3f86ba8-e40f-0410-aaad-9ba5e7f4b01f
482 lines
18 KiB
Perl
482 lines
18 KiB
Perl
package PandoraFMS::ReconServer;
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##########################################################################
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# Pandora FMS Recon Server.
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# Pandora FMS. the Flexible Monitoring System. http://www.pandorafms.org
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##########################################################################
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# Copyright (c) 2005-2009 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 Lesser General Public License
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# as published by the Free Software Foundation; version 2
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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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use strict;
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use warnings;
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use threads;
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use threads::shared;
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use Thread::Semaphore;
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use IO::Socket::INET;
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use POSIX qw(strftime ceil);
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# Default lib dir for RPM and DEB packages
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use lib '/usr/lib/perl5';
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use PandoraFMS::Tools;
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use PandoraFMS::DB;
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use PandoraFMS::Core;
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use PandoraFMS::ProducerConsumerServer;
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use PandoraFMS::GIS qw(get_reverse_geoip_sql get_reverse_geoip_file get_random_close_point);
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# Inherits from PandoraFMS::ProducerConsumerServer
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our @ISA = qw(PandoraFMS::ProducerConsumerServer);
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# Global variables
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my @TaskQueue :shared;
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my %PendingTasks :shared;
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my $Sem :shared = Thread::Semaphore->new;
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my $TaskSem :shared = Thread::Semaphore->new (0);
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########################################################################################
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# Recon Server class constructor.
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########################################################################################
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sub new ($$$$$$) {
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my ($class, $config, $dbh) = @_;
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return undef unless $config->{'reconserver'} == 1;
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if (! -e $config->{'nmap'}) {
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logger ($config, ' [E] ' . $config->{'nmap'} . " needed by Pandora FMS Recon Server not found.", 1);
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print_message ($config, ' [E] ' . $config->{'nmap'} . " needed by Pandora FMS Recon Server not found.", 1);
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return undef;
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}
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# Call the constructor of the parent class
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my $self = $class->SUPER::new($config, 3, \&PandoraFMS::ReconServer::data_producer, \&PandoraFMS::ReconServer::data_consumer, $dbh);
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bless $self, $class;
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return $self;
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}
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###############################################################################
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# Run.
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###############################################################################
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sub run ($) {
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my $self = shift;
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my $pa_config = $self->getConfig ();
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print_message ($pa_config, " [*] Starting Pandora FMS Recon Server.", 1);
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$self->setNumThreads ($pa_config->{'recon_threads'});
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$self->SUPER::run (\@TaskQueue, \%PendingTasks, $Sem, $TaskSem);
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}
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###############################################################################
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# Data producer.
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###############################################################################
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sub data_producer ($) {
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my $self = shift;
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my ($pa_config, $dbh) = ($self->getConfig (), $self->getDBH ());
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my @tasks;
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my $server_id = get_server_id ($dbh, $pa_config->{'servername'}, $self->getServerType ());
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return @tasks unless defined ($server_id);
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# Manual tasks have interval_sweep = 0
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# Manual tasks are "forced" like the other, setting the utimestamp to 1
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# By default, after create a tasks it takes the utimestamp to 0
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# Status -1 means "done".
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my @rows = get_db_rows ($dbh, 'SELECT * FROM trecon_task
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WHERE id_recon_server = ?
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AND disabled = 0
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AND utimestamp = 0 OR (status = -1 AND interval_sweep > 0 AND (utimestamp + interval_sweep) < UNIX_TIMESTAMP())', $server_id);
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foreach my $row (@rows) {
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# Update task status
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update_recon_task ($dbh, $row->{'id_rt'}, 1);
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push (@tasks, $row->{'id_rt'});
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}
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return @tasks;
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}
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###############################################################################
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# Data consumer.
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###############################################################################
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sub data_consumer ($$) {
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my ($self, $task_id) = @_;
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my ($pa_config, $dbh) = ($self->getConfig (), $self->getDBH ());
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# Get recon task data
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my $task = get_db_single_row ($dbh, 'SELECT * FROM trecon_task WHERE id_rt = ?', $task_id);
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return -1 unless defined ($task);
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# Is it a recon script?
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if (defined ($task->{'id_recon_script'}) && ($task->{'id_recon_script'} != 0)) {
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exec_recon_script ($pa_config, $dbh, $task);
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return;
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}
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# Call nmap
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my $nmap = $pa_config->{'nmap'};
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my $subnet = $task->{'subnet'};
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my @output = `$nmap -nsP $subnet`;
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if ($? != 0) {
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update_recon_task ($dbh, $task_id, -1);
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return;
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}
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# Parse nmap output
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my $addr = '';
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my $found_hosts = {};
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foreach my $line (@output) {
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chomp ($line);
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if ($line =~ m/Nmap scan report for (\S+).*/) {
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$addr = $1;
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} elsif ($line =~ m/Host is up \((\S+)s.*/) {
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next unless ($addr ne '');
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$found_hosts->{$addr} = 1;
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$addr = '';
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}
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}
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# Process found hosts
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my $progress = 0;
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my $added = '';
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my $total_hosts = scalar (keys (%{$found_hosts}));
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foreach my $addr (keys (%{$found_hosts})) {
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$progress++;
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# Update the recon task or break if it does not exist anymore
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last if (update_recon_task ($dbh, $task_id, ceil ($progress / ($total_hosts / 100))) eq '0E0');
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# Does the host already exist?
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my $agent = get_agent_from_addr ($dbh, $addr);
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my $agent_id = defined ($agent) ? $agent->{'id_agente'} : 0;
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if ($agent_id > 0) {
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# Skip if not in learning mode or parent detection is disabled
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next if ($agent->{'modo'} != 1 || $task->{'parent_detection'} == 0);
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}
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# Filter by TCP port
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if ((defined ($task->{'recon_ports'})) && ($task->{'recon_ports'} ne "")) {
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next unless (tcp_scan ($pa_config, $addr, $task->{'recon_ports'}) > 0);
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}
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# Filter by OS
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my $id_os = 11; # Network by default
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if ($task->{'os_detect'} == 1){
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$id_os = guess_os ($pa_config, $addr);
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next if ($task->{'id_os'} > 0 && $task->{'id_os'} != $id_os);
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}
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# Get the parent host
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my $parent_id = 0;
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if ($task->{'parent_detection'} == 1) {
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$parent_id = get_host_parent ($pa_config, $addr, $dbh, $task->{'id_group'}, $task->{'parent_recursion'}, $task->{'resolve_names'}, $task->{'os_detect'});
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}
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# If the agent already exists update parent and continue
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if ($agent_id > 0) {
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if ($parent_id > 0) {
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db_do ($dbh, 'UPDATE tagente SET id_parent = ? WHERE id_agente = ?', $parent_id, $agent_id );
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}
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next;
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}
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# Resolve hostnames
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my $host_name = undef;
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if ($task->{'resolve_names'} == 1){
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$host_name = gethostbyaddr (inet_aton($addr), AF_INET);
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}
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$host_name = $addr unless defined ($host_name);
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# Add the new address if it does not exist
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my $addr_id = get_addr_id ($dbh, $addr);
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$addr_id = add_address ($dbh, $addr) unless ($addr_id > 0);
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if ($addr_id <= 0) {
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logger($pa_config, "Could not add address '$addr' for host '$host_name'.", 3);
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next;
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}
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# GIS Code -----------------------------
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# If GIS is activated try to geolocate the ip address of the agent
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# and store also it's position.
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if($pa_config->{'activate_gis'} == 1 && $pa_config->{'recon_reverse_geolocation_mode'} !~ m/^disabled$/i) {
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# Try to get aproximated positional information for the Agent.
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my $region_info = undef;
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if ($pa_config->{'recon_reverse_geolocation_mode'} =~ m/^sql$/i) {
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logger($pa_config, "Trying to get gis data of $addr from the SQL database", 8);
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$region_info = get_reverse_geoip_sql($pa_config, $addr, $dbh);
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}
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elsif ($pa_config->{'recon_reverse_geolocation_mode'} =~ m/^file$/i) {
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logger($pa_config, "Trying to get gis data of $addr from the file database", 8);
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$region_info = get_reverse_geoip_file($pa_config, $addr);
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}
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else {
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logger($pa_config, "ERROR:Trying to get gis data of $addr. Unknown source", 5);
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}
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if (defined($region_info)) {
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my $location_description = '';
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if (defined($region_info->{'region'})) {
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$location_description .= "$region_info->{'region'}, ";
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}
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if (defined($region_info->{'city'})) {
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$location_description .= "$region_info->{'city'}, ";
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}
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if (defined($region_info->{'country_name'})) {
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$location_description .= "($region_info->{'country_name'})";
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}
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# We store a random offset in the coordinates to avoid all the agents apear on the same place.
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my ($longitude, $latitude) = get_random_close_point ($pa_config, $region_info->{'longitude'}, $region_info->{'latitude'});
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logger($pa_config, "Placing agent on random position (Lon,Lat) = ($longitude, $latitude)", 8);
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# Crate a new agent adding the positional info (as is unknown we set 0 time_offset, and 0 altitude)
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$agent_id = pandora_create_agent ($pa_config, $pa_config->{'servername'},
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$host_name, $addr, $task->{'id_group'},
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$parent_id, $id_os, '', 300, $dbh, 0,
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$longitude, $latitude, 0, $location_description);
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}
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else {
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logger($pa_config,"Id location of '$addr' for host '$host_name' NOT found", 3);
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# Create a new agent
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$agent_id = pandora_create_agent ($pa_config, $pa_config->{'servername'},
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$host_name, $addr, $task->{'id_group'},
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$parent_id, $id_os, '', 300, $dbh);
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}
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}
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# End of GIS code -----------------------------
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else {
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# Create a new agent
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$agent_id = pandora_create_agent ($pa_config, $pa_config->{'servername'},
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$host_name, $addr, $task->{'id_group'},
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$parent_id, $id_os, '', 300, $dbh);
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}
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# Check agent creation
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if ($agent_id <= 0) {
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logger($pa_config, "Error creating agent '$host_name'.", 3);
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next;
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}
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# Assign the new address to the agent
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db_do ($dbh, 'INSERT INTO taddress_agent (`id_a`, `id_agent`)
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VALUES (?, ?)', $addr_id, $agent_id);
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# Create network profile modules for the agent
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create_network_profile_modules ($pa_config, $dbh, $agent_id, $task->{'id_network_profile'}, $addr, $task->{'snmp_community'});
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# Generate an event
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pandora_event ($pa_config, "[RECON] New host [$host_name] detected on network [" . $task->{'subnet'} . ']',
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$task->{'id_group'}, $agent_id, 2, 0, 0, 'recon_host_detected', 0, $dbh);
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$added .= $addr . ' ';
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}
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# Create an incident with totals
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if ($total_hosts > 0 && $task->{'create_incident'} == 1) {
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my $text = "At " . strftime ("%Y-%m-%d %H:%M:%S", localtime()) . " ($total_hosts) new hosts were detected by Pandora FMS Recon Server running on [" . $pa_config->{'servername'} . "_Recon]. This incident has been automatically created following instructions for this recon task [" . $task->{'id_group'} . "].\n\n";
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if ($task->{'id_network_profile'} > 0) {
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$text .= "Aditionally, and following instruction for this task, agent(s) has been created, with modules assigned to network component profile [" . get_nc_profile_name ($dbh, $task->{'id_network_profile'}) . "]. Please check this agent as soon as possible to verify it.";
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}
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$text .= "\n\nThis is the list of IP addresses found: \n\n$added";
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pandora_create_incident ($pa_config, $dbh, "[RECON] New hosts detected", $text, 0, 0, 'Pandora FMS Recon Server', $task->{'id_group'});
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}
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# Mark recon task as done
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update_recon_task ($dbh, $task_id, -1);
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}
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##########################################################################
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# Returns the ID of the parent of the given host if available.
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##########################################################################
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sub get_host_parent {
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my ($pa_config, $host, $dbh, $group, $max_depth, $resolve, $os_detect) = @_;
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# Recursive exit condition
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return 0 if ($max_depth == 0);
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# Call nmap
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my $nmap = $pa_config->{'nmap'};
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#my $traceroutetimeout = $pa_config->{'networktimeout'};
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my @output = `$nmap --traceroute -nsP $host`;
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return 0 if ($? != 0);
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# Parse nmap output
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my $parent_addr = '';
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foreach my $line (@output) {
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chomp ($line);
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if ($line =~ m/\d+\s+\S+\s+ms\s+(\S+)/) {
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next if ($1 eq '*' || $1 eq $host);
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$parent_addr = $1;
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}
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}
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# No parent found
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return 0 if ($parent_addr eq '');
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# Check if the parent host exists
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my $parent = get_agent_from_addr ($dbh, $parent_addr);
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my $parent_id = defined ($parent) ? $parent->{'id_agente'} : 0;
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return $parent_id if ($parent_id > 0);
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# Add the new address if it does not exist
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my $addr_id = get_addr_id ($dbh, $parent_addr);
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$addr_id = add_address ($dbh, $parent_addr) unless ($addr_id > 0);
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# Should not happen
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if ($addr_id <= 0) {
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logger($pa_config, "Could not add address '$parent_addr'", 1);
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return 0;
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}
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# Get the parent's name
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my $parent_name = undef;
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if ($resolve == 1){
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$parent_name = gethostbyaddr(inet_aton($parent_addr), AF_INET);
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}
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$parent_name = $parent_addr unless defined ($parent_name);
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# Detect parent's OS
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my $id_os = 11;
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if ($os_detect == 1) {
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$id_os = guess_os ($pa_config, $parent_addr);
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}
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# Get the parent's parent
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my $parent_parent = get_host_parent ($pa_config, $parent_addr, $dbh, $group, $max_depth-1, $resolve, $os_detect);
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# Create the parent
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my $agent_id = pandora_create_agent ($pa_config, $pa_config->{'servername'}, $parent_name, $parent_addr, $group, $parent_parent, $id_os, '', 300, $dbh);
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db_do ($dbh, 'INSERT INTO taddress_agent (`id_a`, `id_agent`)
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VALUES (?, ?)', $addr_id, $agent_id);
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return $agent_id;
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}
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##############################################################################
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# TCP scan the given host/port. Returns 1 if successful, 0 otherwise.
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##############################################################################
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sub tcp_scan ($$$) {
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my ($pa_config, $host, $portlist) = @_;
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my $nmap = $pa_config->{'nmap'};
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my $output = `$nmap -p$portlist $host | grep open | wc -l`;
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return 0 if ($? != 0);
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return $output;
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}
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##########################################################################
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# Guess OS using xprobe2.
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##########################################################################
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sub guess_os {
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my ($pa_config, $host) = @_;
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# Use xprobe2 if available
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my $xprobe = $pa_config->{'xprobe2'};
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if (-e $xprobe){
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my $output = `$xprobe $host 2> /dev/null | grep 'Running OS' | head -1`;
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return 10 if ($? != 0);
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return pandora_get_os ($output);
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}
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# Use nmap by default
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my $nmap = $pa_config->{'nmap'};
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my $output = `$nmap -F -O $host 2> /dev/null | grep 'Aggressive OS guesses'`;
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return 10 if ($? != 0);
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return pandora_get_os ($output);
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}
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##########################################################################
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# Update recon task status.
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##########################################################################
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sub update_recon_task ($$$) {
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my ($dbh, $id_task, $status) = @_;
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db_do ($dbh, 'UPDATE trecon_task SET utimestamp = ?, status = ? WHERE id_rt = ?', time (), $status, $id_task);
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}
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##########################################################################
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# Create network profile modules for the given agent.
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##########################################################################
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sub create_network_profile_modules {
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my ($pa_config, $dbh, $agent_id, $np_id, $addr, $snmp_community) = @_;
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return unless ($np_id > 0);
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# Get network components associated to the network profile
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my @np_components = get_db_rows ($dbh, 'SELECT * FROM tnetwork_profile_component WHERE id_np = ?', $np_id);
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foreach my $np_component (@np_components) {
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# Get network component data
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my $component = get_db_single_row ($dbh, 'SELECT * FROM tnetwork_component wHERE id_nc = ?', $np_component->{'id_nc'});
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if (! defined ($component)) {
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logger($pa_config, "Network component ID " . $np_component->{'id_nc'} . " for agent $addr not found.", 3);
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next;
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}
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logger($pa_config, "Processing network component '" . $component->{'name'} . "' for agent $addr.", 10);
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# Use snmp_community from network task instead the component snmp_community
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$component->{'snmp_community'} = $snmp_community;
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# Create the module
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my $module_id = db_insert ($dbh, 'id_agente_modulo', 'INSERT INTO tagente_modulo (id_agente, id_tipo_modulo, descripcion, nombre, max, min, module_interval, tcp_port, tcp_send, tcp_rcv, snmp_community, snmp_oid, ip_target, id_module_group, flag, disabled, plugin_user, plugin_pass, plugin_parameter, max_timeout, id_modulo )
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VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, 1, 0, ?, ?, ?, ?, ?)',
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$agent_id, $component->{'type'}, $component->{'description'}, safe_input($component->{'name'}), $component->{'max'}, $component->{'min'}, $component->{'module_interval'}, $component->{'tcp_port'}, $component->{'tcp_send'}, $component->{'tcp_rcv'}, $component->{'snmp_community'},
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$component->{'snmp_oid'}, $addr, $component->{'id_module_group'}, $component->{'plugin_user'}, $component->{'plugin_pass'}, $component->{'plugin_parameter'}, $component->{'max_timeout'}, $component->{'id_modulo'});
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# An entry in tagente_estado is necessary for the module to work
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db_do ($dbh, 'INSERT INTO tagente_estado (`id_agente_modulo`, `id_agente`, `last_try`, current_interval) VALUES (?, ?, \'1970-01-01 00:00:00\', ?)', $module_id, $agent_id, $component->{'module_interval'});
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logger($pa_config, 'Creating module ' . $component->{'name'} . " for agent $addr from network component '" . $component->{'name'} . "'.", 10);
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}
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}
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##########################################################################
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# Executes recon scripts
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##########################################################################
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sub exec_recon_script ($$$) {
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my ($pa_config, $dbh, $task) = @_;
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|
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# Get recon plugin data
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my $script = get_db_single_row ($dbh, 'SELECT * FROM trecon_script WHERE id_recon_script = ?', $task->{'id_recon_script'});
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return -1 unless defined ($script);
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|
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logger($pa_config, 'Executing recon script ' . safe_output($script->{'name'}), 10);
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|
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my $command = safe_output($script->{'script'});
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my $field1 = safe_output($task->{'field1'});
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my $field2 = safe_output($task->{'field2'});
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my $field3 = safe_output($task->{'field3'});
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|
my $field4 = safe_output($task->{'field4'});
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|
|
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`$command $task->{'id_rt'} $task->{'id_group'} $task->{'create_incident'} $field1 $field2 $field3 $field4`;
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|
|
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# Notify this recon task is ended
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update_recon_task ($dbh, $task->{'id_rt'}, -1);
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|
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return 0;
|
|
}
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1;
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__END__
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