Scripts and config to monitor PfSense with Zabbix. Forked from https://github.com/rbicelli/pfsense-zabbix-template
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477 lines
14 KiB
477 lines
14 KiB
<?php
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/***
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pfsense_zbx.php - pfSense Zabbix Interface
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Version 0.9.3 - 2020-04-26
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Written by Riccardo Bicelli <r.bicelli@gmail.com>
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This program is licensed under Apache 2.0 License
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*/
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require_once('globals.inc');
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require_once('functions.inc');
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require_once('config.inc');
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require_once('util.inc');
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//For Interfaces Discovery
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require_once('interfaces.inc');
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//For OpenVPN Discovery
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require_once('openvpn.inc');
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//For Service Discovery
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require_once("service-utils.inc");
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//For System
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require_once('pkg-utils.inc');
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//Testing function, for template creating purpose
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function pfz_test(){
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$line = "-------------------\n";
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$ovpn_servers = pfz_openvpn_get_all_servers();
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echo "OPENVPN Servers:\n";
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print_r($ovpn_servers);
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echo $line;
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$ovpn_clients = openvpn_get_active_clients();
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echo "OPENVPN Clients:\n";
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print_r($ovpn_clients);
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echo $line;
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$ifdescrs = get_configured_interface_with_descr(true);
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$ifaces=array();
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foreach ($ifdescrs as $ifdescr => $ifname){
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$ifinfo = get_interface_info($ifdescr);
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$ifaces[$ifname] = $ifinfo;
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}
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echo "Network Interfaces:\n";
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print_r($ifaces);
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print_r(get_interface_arr());
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print_r(get_configured_interface_list());
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echo $line;
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$services = get_services();
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echo "Services: \n";
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print_r($services);
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echo $line;
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}
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// Interface Discovery
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// Improved performance
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function pfz_interface_discovery() {
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$ifdescrs = get_configured_interface_with_descr(true);
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$ifaces = get_interface_arr();
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$ifcs=array();
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$json_string = '{"data":[';
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foreach ($ifdescrs as $ifname => $ifdescr){
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$ifinfo = get_interface_info($ifname);
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$ifinfo["description"] = $ifdescr;
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$ifcs[$ifname] = $ifinfo;
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}
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foreach ($ifaces as $hwif) {
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$json_string .= '{"{#IFNAME}":"' . $hwif . '"';
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$ifdescr = $hwif;
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foreach($ifcs as $ifc=>$ifinfo){
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if ($ifinfo["hwif"] == $hwif){
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$ifdescr = $ifinfo["description"];
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break;
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}
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}
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$json_string .= ',"{#IFDESCR}":"' . $ifdescr . '"';
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$json_string .= '},';
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}
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$json_string = rtrim($json_string,",");
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$json_string .= "]}";
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echo $json_string;
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}
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// OpenVPN Server Discovery
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function pfz_openvpn_get_all_servers(){
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$servers = openvpn_get_active_servers();
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$sk_servers = openvpn_get_active_servers("p2p");
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$servers = array_merge($servers,$sk_servers);
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return ($servers);
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}
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function pfz_openvpn_serverdiscovery() {
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$servers = pfz_openvpn_get_all_servers();
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$json_string = '{"data":[';
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foreach ($servers as $server){
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$name = trim(preg_replace('/\w{3}(\d)?\:\d{4,5}/i', '', $server['name']));
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$json_string .= '{"{#SERVER}":"' . $server['vpnid'] . '"';
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$json_string .= ',"{#NAME}":"' . $name . '"';
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$json_string .= '},';
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}
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$json_string = rtrim($json_string,",");
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$json_string .= "]}";
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echo $json_string;
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}
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// Get OpenVPN Server Value
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function pfz_openvpn_servervalue($server_id,$valuekey){
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$servers = pfz_openvpn_get_all_servers();
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foreach($servers as $server) {
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if($server['vpnid']==$server_id)
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$value = $server[$valuekey];
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}
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switch ($valuekey){
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case "conns":
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//Client Connections: is an array so it is sufficient to count elements
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if (is_array($value))
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$value = count($value);
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else
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$value = "0";
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break;
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case "status":
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$value = pfz_valuemap("openvpn.server.status", $value);
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break;
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case "mode":
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$value = pfz_valuemap("openvpn.server.mode", $value);
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break;
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}
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//if ($value=="") $value="none";
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echo $value;
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}
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// OpenVPN Client Discovery
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function pfz_openvpn_clientdiscovery() {
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$clients = openvpn_get_active_clients();
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$json_string = '{"data":[';
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foreach ($clients as $client){
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$name = trim(preg_replace('/\w{3}(\d)?\:\d{4,5}/i', '', $client['name']));
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$json_string .= '{"{#CLIENT}":"' . $client['vpnid'] . '"';
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$json_string .= ',"{#NAME}":"' . $name . '"';
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$json_string .= '},';
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}
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$json_string = rtrim($json_string,",");
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$json_string .= "]}";
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echo $json_string;
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}
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function pfz_openvpn_clientvalue($client_id, $valuekey){
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$clients = openvpn_get_active_clients();
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foreach($clients as $client) {
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if($client['vpnid']==$client_id)
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$value = $client[$valuekey];
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}
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switch ($valuekey){
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case "status":
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$value = pfz_valuemap("openvpn.server.client", $value);
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break;
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}
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if ($value=="") $value="none";
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echo $value;
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}
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// Services Discovery
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// 2020-03-27: Added space replace with __ for issue #12
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function pfz_services_discovery(){
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$services = get_services();
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$json_string = '{"data":[';
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foreach ($services as $service){
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if (!empty($service['name'])) {
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$status = get_service_status($service);
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if ($status="") $status = 0;
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$id="";
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//id for OpenVPN
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if (!empty($service['id'])) $id = "." . $service["id"];
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//zone for Captive Portal
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if (!empty($service['zone'])) $id = "." . $service["zone"];
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$json_string .= '{"{#SERVICE}":"' . str_replace(" ", "__", $service['name']) . $id . '"';
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$json_string .= ',"{#DESCRIPTION}":"' . $service['description'] . '"';
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$json_string .= '},';
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}
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}
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$json_string = rtrim($json_string,",");
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$json_string .= "]}";
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echo $json_string;
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}
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// Get service value
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// 2020-03-27: Added space replace in service name for issue #12
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function pfz_service_value($name,$value){
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$services = get_services();
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//List of service which are stopped on CARP Slave.
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//For now this is the best way i found for filtering out the triggers
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//Waiting for a way in Zabbix to use Global Regexp in triggers with items discovery
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$stopped_on_carp_slave = array("haproxy","openvpn.");
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foreach ($services as $service){
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$namecfr=str_replace("__"," ",$service["name"]);
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$carpcfr=str_replace("__"," ",$service["name"]);
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//OpenVPN
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if (!empty($service['id'])) {
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$namecfr = $service['name'] . "." . $service["id"];
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$carpcfr = $service['name'] . ".";
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}
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//Captive Portal
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if (!empty($service['zone'])) {
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$namecfr = $service['name'] . "." . $service["zone"];
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$carpcfr = $service['name'] . ".";
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}
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if ($namecfr == $name){
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switch ($value) {
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case "status":
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$status = get_service_status($service);
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if ($status=="") $status = 0;
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echo $status;
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break;
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case "name":
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echo $namecfr;
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break;
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case "enabled":
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if (is_service_enabled($service['name']))
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echo 1;
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else
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echo 0;
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break;
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case "run_on_carp_slave":
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if (in_array($carpcfr,$stopped_on_carp_slave))
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echo 0;
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else
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echo 1;
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default:
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echo $service[$value];
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break;
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}
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}
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}
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}
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//Gateway Discovery
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function pfz_gw_rawstatus() {
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// Return a Raw Gateway Status, useful for action Scripts (e.g. Update Cloudflare DNS config)
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$gws = return_gateways_status(true);
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$gw_string="";
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foreach ($gws as $gw){
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$gw_string .= ($gw['name'] . '.' . $gw['status'] .",");
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}
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echo rtrim($gw_string,",");
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}
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function pfz_gw_discovery() {
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$gws = return_gateways_status(true);
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$json_string = '{"data":[';
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foreach ($gws as $gw){
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$json_string .= '{"{#GATEWAY}":"' . $gw['name'] . '"';
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$json_string .= '},';
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}
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$json_string = rtrim($json_string,",");
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$json_string .= "]}";
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echo $json_string;
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}
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function pfz_gw_value($gw, $valuekey) {
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$gws = return_gateways_status(true);
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if(array_key_exists($gw,$gws))
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echo $gws[$gw][$valuekey];
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}
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function pfz_carp_status(){
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//Detect CARP Status
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global $config;
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$status_return = 0;
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$status = get_carp_status();
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$carp_detected_problems = get_single_sysctl("net.inet.carp.demotion");
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if ($status != 0) { //CARP is enabled
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if ($carp_detected_problems != 0) {
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echo 4; //There's some Major Problems with CARP
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return true;
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}
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$status_changed = false;
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$prev_status = "";
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foreach ($config['virtualip']['vip'] as $carp) {
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if ($carp['mode'] != "carp") {
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continue;
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}
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$if_status = get_carp_interface_status("_vip{$carp['uniqid']}");
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if ( ($prev_status != $if_status) && (empty($if_status)==false) ) { //Some glitches with GUI
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if ($prev_status!="") $status_changed = true;
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$prev_status = $if_status;
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}
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}
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if ($status_changed) {
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//CARP Status is inconsistent across interfaces
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echo 3;
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} else {
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if ($prev_status=="MASTER")
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echo 1;
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else
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echo 2;
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}
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} else {
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//CARP is Disabled
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echo 0;
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}
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}
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//System Information
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function pfz_get_system_value($section){
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switch ($section){
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case "version":
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echo( get_system_pkg_version()['version']);
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break;
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case "installed_version":
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echo( get_system_pkg_version()['installed_version']);
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break;
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case "new_version_available":
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$pkgver = get_system_pkg_version();
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if ($pkgver['version']==$pkgver['installed_version'])
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echo "0";
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else
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echo "1";
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break;
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}
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}
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// Value mappings
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// Each value map is represented by an associative array
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function pfz_valuemap($valuename, $value){
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switch ($valuename){
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case "openvpn.server.status":
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$valuemap = array(
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"up" => "1",
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"down" => "2",
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"none" => "3",
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"reconnecting; ping-restart" => "4");
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break;
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case "openvpn.client.status":
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$valuemap = array(
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"up" => "1",
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"down" => "0",
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"none" => "0",
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"reconnecting; ping-restart" => "2");
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break;
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case "openvpn.server.mode":
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$valuemap = array(
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"p2p_tls" => "1",
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"p2p_shared_key" => "2",
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"server_tls" => "3",
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"server_user" => "4",
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"server_tls_user" => "5");
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break;
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}
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if (array_key_exists($value, $valuemap))
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return $valuemap[$value];
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return "0";
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}
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//Argument parsers for Discovery
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function pfz_discovery($section){
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switch (strtolower($section)){
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case "gw":
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pfz_gw_discovery();
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break;
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case "openvpn_server":
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pfz_openvpn_serverdiscovery();
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break;
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case "openvpn_client":
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pfz_openvpn_clientdiscovery();
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break;
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case "services":
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pfz_services_discovery();
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break;
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case "interfaces":
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pfz_interface_discovery();
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break;
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}
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}
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//Main Code
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switch (strtolower($argv[1])){
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case "discovery":
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pfz_discovery($argv[2]);
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break;
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case "gw_value":
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pfz_gw_value($argv[2],$argv[3]);
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break;
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case "gw_status":
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pfz_gw_rawstatus();
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break;
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case "openvpn_servervalue":
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pfz_openvpn_servervalue($argv[2],$argv[3]);
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break;
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case "openvpn_clientvalue":
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pfz_openvpn_clientvalue($argv[2],$argv[3]);
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break;
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case "service_value":
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pfz_service_value($argv[2],$argv[3]);
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break;
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case "carp_status":
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pfz_carp_status();
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break;
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case "if_name":
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pfz_get_if_name($argv[2]);
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break;
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case "system":
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pfz_get_system_value($argv[2]);
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break;
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default:
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pfz_test();
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}
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