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https://github.com/Cacti/cacti.git
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598 lines
20 KiB
PHP
598 lines
20 KiB
PHP
<?php
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/*
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+-------------------------------------------------------------------------+
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| Copyright (C) 2004-2016 The Cacti Group |
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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; either version 2 |
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| of the License, or (at your option) any later version. |
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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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+-------------------------------------------------------------------------+
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| Cacti: The Complete RRDTool-based Graphing Solution |
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+-------------------------------------------------------------------------+
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| This code is designed, written, and maintained by the Cacti Group. See |
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| about.php and/or the AUTHORS file for specific developer information. |
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+-------------------------------------------------------------------------+
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| http://www.cacti.net/ |
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+-------------------------------------------------------------------------+
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*/
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define("REGEXP_SNMP_TRIM", "/(hex|counter(32|64)|gauge|gauge(32|64)|float|ipaddress|string|integer):/i");
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define("SNMP_METHOD_PHP", 1);
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define("SNMP_METHOD_BINARY", 2);
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function cacti_snmp_get($hostname, $community, $oid, $version, $username, $password, $auth_proto, $priv_pass, $priv_proto, $context, $port = 161, $timeout = 500, $retries = 0, $environ = SNMP_POLLER) {
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global $config, $snmp_logging, $php_errormsg;
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/* determine default retries */
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if (($retries == 0) || (!is_numeric($retries))) {
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$retries = read_config_option("snmp_retries");
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if ($retries == "") $retries = 3;
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}
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/* do not attempt to poll invalid combinations */
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if (($version == 0) || (!is_numeric($version)) ||
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(!is_numeric($port)) ||
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(!is_numeric($retries)) ||
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(!is_numeric($timeout)) ||
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(($community == "") && ($version != 3))
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) {
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return "U";
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}
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if ((snmp_get_method($version) == SNMP_METHOD_PHP) &&
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(!strlen($context) || ($version != 3))) {
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/* make sure snmp* is verbose so we can see what types of data
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we are getting back
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remember: php snmp function expect timeout to be in microseconds
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*/
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snmp_set_quick_print(0);
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$track_errors = ini_get('track_errors');
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if ($track_errors != '1') ini_set('track_errors', 1);
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if ($version == "1") {
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$snmp_value = @snmpget("$hostname:$port", "$community", "$oid", ($timeout * 1000), $retries);
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}elseif ($version == "2") {
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$snmp_value = @snmp2_get("$hostname:$port", "$community", "$oid", ($timeout * 1000), $retries);
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}else{
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if ($priv_proto == "[None]" || $priv_pass == '') {
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$proto = "authNoPriv";
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$priv_proto = "";
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}else{
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$proto = "authPriv";
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}
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$snmp_value = @snmp3_get("$hostname:$port", "$username", $proto, $auth_proto, "$password", $priv_proto, "$priv_pass", "$oid", ($timeout * 1000), $retries);
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}
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if ($snmp_value === false && stripos($php_errormsg, 'no response') !== false && (!isset($snmp_logging) || $snmp_logging == true)) {
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cacti_log("WARNING: PHP-SNMP Get Timeout for Device:'$hostname', and OID:'$oid'", false);
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}
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ini_set('track_errors', $track_errors);
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}else {
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$snmp_value = '';
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/* ucd/net snmp want the timeout in seconds */
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$timeout = ceil($timeout / 1000);
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if ($version == "1") {
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$snmp_auth = "-c " . cacti_escapeshellarg($community); /* v1/v2 - community string */
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}elseif ($version == "2") {
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$snmp_auth = "-c " . cacti_escapeshellarg($community); /* v1/v2 - community string */
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$version = "2c"; /* ucd/net snmp prefers this over '2' */
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}elseif ($version == "3") {
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if ($priv_proto == "[None]" || $priv_pass == '') {
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$proto = "authNoPriv";
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$priv_proto = "";
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}else{
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$proto = "authPriv";
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}
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if (strlen($priv_pass)) {
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$priv_pass = "-X " . cacti_escapeshellarg($priv_pass) . " -x " . cacti_escapeshellarg($priv_proto);
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}else{
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$priv_pass = "";
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}
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if (strlen($context)) {
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$context = "-n " . cacti_escapeshellarg($context);
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}else{
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$context = "";
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}
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$snmp_auth = trim("-u " . cacti_escapeshellarg($username) .
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" -l " . cacti_escapeshellarg($proto) .
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" -a " . cacti_escapeshellarg($auth_proto) .
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" -A " . cacti_escapeshellarg($password) .
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" " . $priv_pass .
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" " . $context); /* v3 - username/password */
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}
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/* no valid snmp version has been set, get out */
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if (empty($snmp_auth)) { return; }
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exec(cacti_escapeshellcmd(read_config_option("path_snmpget")) . " -O fntevU " . $snmp_auth . " -v $version -t $timeout -r $retries " . cacti_escapeshellarg($hostname) . ":$port " . cacti_escapeshellarg($oid), $snmp_value);
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/* fix for multi-line snmp output */
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if (is_array($snmp_value)) {
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$snmp_value = implode(" ", $snmp_value);
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}
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}
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/* fix for multi-line snmp output */
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if (isset($snmp_value)) {
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if (is_array($snmp_value)) {
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$snmp_value = implode(" ", $snmp_value);
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}
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}
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if (substr_count($snmp_value, "Timeout:") && (!isset($snmp_logging) || $snmp_logging == true)) {
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cacti_log("WARNING: NET-SNMP Get Timeout for Device:'$hostname', and OID:'$oid'", false);
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}
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/* strip out non-snmp data */
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$snmp_value = format_snmp_string($snmp_value, false);
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return $snmp_value;
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}
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function cacti_snmp_getnext($hostname, $community, $oid, $version, $username, $password, $auth_proto, $priv_pass, $priv_proto, $context, $port = 161, $timeout = 500, $retries = 0, $environ = SNMP_POLLER) {
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global $config, $snmp_logging, $php_errormsg;
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/* determine default retries */
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if (($retries == 0) || (!is_numeric($retries))) {
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$retries = read_config_option("snmp_retries");
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if ($retries == "") $retries = 3;
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}
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/* do not attempt to poll invalid combinations */
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if (($version == 0) || (!is_numeric($version)) ||
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(!is_numeric($port)) ||
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(!is_numeric($retries)) ||
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(!is_numeric($timeout)) ||
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(($community == "") && ($version != 3))
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) {
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return "U";
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}
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if ((snmp_get_method($version) == SNMP_METHOD_PHP) &&
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(!strlen($context) || ($version != 3))) {
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/* make sure snmp* is verbose so we can see what types of data
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we are getting back */
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snmp_set_quick_print(0);
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$track_errors = ini_get('track_errors');
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if ($track_errors != '1') ini_set('track_errors', 1);
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if ($version == "1") {
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$snmp_value = @snmpgetnext("$hostname:$port", "$community", "$oid", ($timeout * 1000), $retries);
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}elseif ($version == "2") {
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$snmp_value = @snmp2_getnext("$hostname:$port", "$community", "$oid", ($timeout * 1000), $retries);
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}else{
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if ($priv_proto == "[None]" || $priv_pass == '') {
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$proto = "authNoPriv";
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$priv_proto = "";
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}else{
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$proto = "authPriv";
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}
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$snmp_value = @snmp3_getnext("$hostname:$port", "$username", $proto, $auth_proto, "$password", $priv_proto, "$priv_pass", "$oid", ($timeout * 1000), $retries);
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}
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if ($snmp_value === false && stripos($php_errormsg, 'no response') !== false && (!isset($snmp_logging) || $snmp_logging == true)) {
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cacti_log("WARNING: SNMP GetNext Timeout for Device:'$hostname', and OID:'$oid'", false);
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}
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ini_set('track_errors', $track_errors);
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}else {
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$snmp_value = '';
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/* ucd/net snmp want the timeout in seconds */
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$timeout = ceil($timeout / 1000);
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if ($version == "1") {
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$snmp_auth = "-c " . cacti_escapeshellarg($community); /* v1/v2 - community string */
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}elseif ($version == "2") {
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$snmp_auth = "-c " . cacti_escapeshellarg($community); /* v1/v2 - community string */
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$version = "2c"; /* ucd/net snmp prefers this over '2' */
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}elseif ($version == "3") {
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if ($priv_proto == "[None]" || $priv_pass == '') {
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$proto = "authNoPriv";
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$priv_proto = "";
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}else{
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$proto = "authPriv";
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}
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if (strlen($priv_pass)) {
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$priv_pass = "-X " . cacti_escapeshellarg($priv_pass) . " -x " . cacti_escapeshellarg($priv_proto);
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}else{
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$priv_pass = "";
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}
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if (strlen($context)) {
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$context = "-n " . cacti_escapeshellarg($context);
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}else{
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$context = "";
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}
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$snmp_auth = trim("-u " . cacti_escapeshellarg($username) .
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" -l " . cacti_escapeshellarg($proto) .
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" -a " . cacti_escapeshellarg($auth_proto) .
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" -A " . cacti_escapeshellarg($password) .
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" " . $priv_pass .
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" " . $context); /* v3 - username/password */
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}
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/* no valid snmp version has been set, get out */
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if (empty($snmp_auth)) { return; }
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/* handle control options "-C", works for net-snmp only */
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$control_options = "";
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if (read_config_option("oid_increasing_check_disable") != "") {
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$control_options .= " -Cc ";
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}
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exec(cacti_escapeshellcmd(read_config_option("path_snmpgetnext")) . " -O fntevU $control_options $snmp_auth -v $version -t $timeout -r $retries " . cacti_escapeshellarg($hostname) . ":$port " . cacti_escapeshellarg($oid), $snmp_value);
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}
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if (isset($snmp_value)) {
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/* fix for multi-line snmp output */
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if (is_array($snmp_value)) {
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$snmp_value = implode(" ", $snmp_value);
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}
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}
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if (substr_count($snmp_value, "Timeout:") && (!isset($snmp_logging) || $snmp_logging == true)) {
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cacti_log("WARNING: SNMP GetNext Timeout for Device:'$hostname', and OID:'$oid'", false);
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}
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/* strip out non-snmp data */
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$snmp_value = format_snmp_string($snmp_value, false);
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return $snmp_value;
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}
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function cacti_snmp_walk($hostname, $community, $oid, $version, $username, $password, $auth_proto, $priv_pass, $priv_proto, $context, $port = 161, $timeout = 500, $retries = 0, $max_oids = 10, $environ = SNMP_POLLER) {
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global $config, $banned_snmp_strings, $snmp_logging, $php_errormsg;
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$snmp_oid_included = true;
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$snmp_auth = '';
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$snmp_array = array();
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$temp_array = array();
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/* determine default retries */
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if (($retries == 0) || (!is_numeric($retries))) {
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$retries = read_config_option("snmp_retries");
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if ($retries == "") $retries = 3;
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}
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/* determine default max_oids */
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if (($max_oids == 0) || (!is_numeric($max_oids))) {
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$max_oids = read_config_option("max_get_size");
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if ($max_oids == "") $max_oids = 10;
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}
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/* do not attempt to poll invalid combinations */
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if (($version == 0) || (!is_numeric($version)) ||
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(!is_numeric($max_oids)) ||
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(!is_numeric($port)) ||
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(!is_numeric($retries)) ||
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(!is_numeric($timeout)) ||
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(($community == "") && ($version != 3))
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) {
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return array();
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}
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$path_snmpbulkwalk = read_config_option("path_snmpbulkwalk");
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if ((snmp_get_method($version) == SNMP_METHOD_PHP) &&
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(!strlen($context) || ($version != 3)) &&
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(($version == 1) ||
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(version_compare(phpversion(), "5.1") >= 0) ||
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(!file_exists($path_snmpbulkwalk)))) {
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/* make sure snmp* is verbose so we can see what types of data
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we are getting back */
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/* force php to return numeric oid's */
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if (function_exists("snmp_set_oid_numeric_print")) {
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snmp_set_oid_numeric_print(TRUE);
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}
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if (function_exists("snmprealwalk")) {
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$snmp_oid_included = false;
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}
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snmp_set_quick_print(0);
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$track_errors = ini_get('track_errors');
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if ($track_errors != '1') ini_set('track_errors', 1);
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if ($version == "1") {
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$temp_array = @snmprealwalk("$hostname:$port", "$community", "$oid", ($timeout * 1000), $retries);
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}elseif ($version == "2") {
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$temp_array = @snmp2_real_walk("$hostname:$port", "$community", "$oid", ($timeout * 1000), $retries);
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}else{
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if ($priv_proto == "[None]" || $priv_pass == '') {
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$proto = "authNoPriv";
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$priv_proto = "";
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}else{
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$proto = "authPriv";
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}
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$temp_array = @snmp3_real_walk("$hostname:$port", "$username", $proto, $auth_proto, "$password", $priv_proto, "$priv_pass", "$oid", ($timeout * 1000), $retries);
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}
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if ($temp_array === false && stripos($php_errormsg, 'no response') !== false && (!isset($snmp_logging) || $snmp_logging == true)) {
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cacti_log("WARNING: SNMP Walk Timeout for Device:'$hostname', and OID:'$oid'", false);
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}
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ini_set('track_errors', $track_errors);
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/* check for bad entries */
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if (is_array($temp_array) && sizeof($temp_array)) {
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foreach($temp_array as $key => $value) {
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foreach($banned_snmp_strings as $item) {
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if(strstr($value, $item) != "") {
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unset($temp_array[$key]);
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continue 2;
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}
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}
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}
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}
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$o = 0;
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for (@reset($temp_array); $i = @key($temp_array); next($temp_array)) {
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if ($temp_array[$i] != "NULL") {
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$snmp_array[$o]["oid"] = preg_replace("/^\./", "", $i);
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$snmp_array[$o]["value"] = format_snmp_string($temp_array[$i], $snmp_oid_included);
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}
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$o++;
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}
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}else{
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/* ucd/net snmp want the timeout in seconds */
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$timeout = ceil($timeout / 1000);
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if ($version == "1") {
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$snmp_auth = "-c " . cacti_escapeshellarg($community); /* v1/v2 - community string */
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}elseif ($version == "2") {
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$snmp_auth = "-c " . cacti_escapeshellarg($community); /* v1/v2 - community string */
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$version = "2c"; /* ucd/net snmp prefers this over '2' */
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}elseif ($version == "3") {
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if ($priv_proto == "[None]" || $priv_pass == '') {
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$proto = "authNoPriv";
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$priv_proto = "";
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}else{
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$proto = "authPriv";
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}
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if (strlen($priv_pass)) {
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$priv_pass = "-X " . cacti_escapeshellarg($priv_pass) . " -x " . cacti_escapeshellarg($priv_proto);
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}else{
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$priv_pass = "";
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}
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if (strlen($context)) {
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$context = "-n " . cacti_escapeshellarg($context);
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}else{
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$context = "";
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}
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$snmp_auth = trim("-u " . cacti_escapeshellarg($username) .
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" -l " . cacti_escapeshellarg($proto) .
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" -a " . cacti_escapeshellarg($auth_proto) .
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" -A " . cacti_escapeshellarg($password) .
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" " . $priv_pass .
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" " . $context); /* v3 - username/password */
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}
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/* no valid snmp version has been set, get out */
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if (empty($snmp_auth)) { return; }
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/* handle control options "-C", works for net-snmp only */
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$control_options = "";
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if (read_config_option("oid_increasing_check_disable") != "") {
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$control_options .= " -Cc ";
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}
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if (file_exists($path_snmpbulkwalk) && ($version > 1) && ($max_oids > 1)) {
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$temp_array = exec_into_array(cacti_escapeshellcmd($path_snmpbulkwalk) . " -O Qn $control_options $snmp_auth -v $version -t $timeout -r $retries -Cr$max_oids " . cacti_escapeshellarg($hostname) . ":$port " . cacti_escapeshellarg($oid));
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}else{
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$temp_array = exec_into_array(cacti_escapeshellcmd(read_config_option("path_snmpwalk")) . " -O Qn $control_options $snmp_auth -v $version -t $timeout -r $retries " . cacti_escapeshellarg($hostname) . ":$port " . cacti_escapeshellarg($oid));
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}
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if (substr_count(implode(" ", $temp_array), "Timeout:") && (!isset($snmp_logging) || $snmp_logging == true)) {
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cacti_log("WARNING: SNMP Walk Timeout for Device:'$hostname', and OID:'$oid'", false);
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}
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/* check for bad entries */
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if (is_array($temp_array) && sizeof($temp_array)) {
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foreach($temp_array as $key => $value) {
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foreach($banned_snmp_strings as $item) {
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if(strstr($value, $item) != "") {
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unset($temp_array[$key]);
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continue 2;
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}
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}
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}
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}
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for ($i=0; $i < count($temp_array); $i++) {
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if ($temp_array[$i] != "NULL") {
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/* returned SNMP string e.g.
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* .1.3.6.1.2.1.31.1.1.1.18.1 = STRING: === bla ===
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* split off first chunk before the "="; this is the OID
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*/
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list($oid, $value) = explode("=", $temp_array[$i], 2);
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$snmp_array[$i]["oid"] = trim($oid);
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$snmp_array[$i]["value"] = format_snmp_string($temp_array[$i], true);
|
|
}
|
|
}
|
|
}
|
|
|
|
return $snmp_array;
|
|
}
|
|
|
|
function format_snmp_string($string, $snmp_oid_included) {
|
|
global $banned_snmp_strings;
|
|
|
|
$string = preg_replace(REGEXP_SNMP_TRIM, "", trim($string));
|
|
|
|
if (substr($string, 0, 7) == "No Such") {
|
|
return "";
|
|
}
|
|
|
|
if ($snmp_oid_included) {
|
|
/* returned SNMP string e.g.
|
|
* .1.3.6.1.2.1.31.1.1.1.18.1 = STRING: === bla ===
|
|
* strip off all leading junk (the oid and stuff) */
|
|
$string_array = explode("=", $string, 2);
|
|
if (sizeof($string_array) == 1) {
|
|
/* trim excess first */
|
|
$string = trim($string);
|
|
}else if ((substr($string, 0, 1) == ".") || (strpos($string, "::") !== false)) {
|
|
/* drop the OID from the array */
|
|
array_shift($string_array);
|
|
$string = trim(implode("=", $string_array));
|
|
}else {
|
|
$string = trim(implode("=", $string_array));
|
|
}
|
|
}
|
|
|
|
/* return the easiest value */
|
|
if ($string == "") {
|
|
return $string;
|
|
}
|
|
|
|
/* now check for the second most obvious */
|
|
if (is_numeric($string)) {
|
|
return trim($string);
|
|
}
|
|
|
|
/* remove ALL quotes, and other special delimiters */
|
|
$string = str_replace("\"", "", $string);
|
|
$string = str_replace("'", "", $string);
|
|
$string = str_replace(">", "", $string);
|
|
$string = str_replace("<", "", $string);
|
|
$string = str_replace("\\", "", $string);
|
|
$string = str_replace("\n", " ", $string);
|
|
$string = str_replace("\r", " ", $string);
|
|
|
|
/* account for invalid MIB files */
|
|
if (substr_count($string, "Wrong Type")) {
|
|
$string = strrev($string);
|
|
if ($position = strpos($string, ":")) {
|
|
$string = trim(strrev(substr($string, 0, $position)));
|
|
}else{
|
|
$string = trim(strrev($string));
|
|
}
|
|
}
|
|
|
|
/* Remove invalid chars */
|
|
$k = strlen($string);
|
|
for ($i=0; $i < $k; $i++) {
|
|
if ((ord($string[$i]) <= 31) || (ord($string[$i]) >= 127)) {
|
|
$string[$i] = " ";
|
|
}
|
|
}
|
|
$string = trim($string);
|
|
|
|
if ((substr_count($string, "Hex-STRING:")) ||
|
|
(substr_count($string, "Hex-")) ||
|
|
(substr_count($string, "Hex:"))) {
|
|
/* strip of the 'Hex-STRING:' */
|
|
$string = preg_replace("/Hex-STRING: ?/i", "", $string);
|
|
$string = preg_replace("/Hex: ?/i", "", $string);
|
|
$string = preg_replace("/Hex- ?/i", "", $string);
|
|
|
|
$string_array = explode(" ", $string);
|
|
|
|
/* loop through each string character and make ascii */
|
|
$string = "";
|
|
$hexval = "";
|
|
$ishex = false;
|
|
for ($i=0;($i<sizeof($string_array));$i++) {
|
|
if (strlen($string_array[$i])) {
|
|
/* for a 00 delimited Hex-STRING: do NOT translate this to CHR! */
|
|
if ((($i+1) == sizeof($string_array)) && ($string_array[$i] == 0)) {
|
|
/* do nothing */
|
|
}else{
|
|
$string .= chr(hexdec($string_array[$i]));
|
|
}
|
|
|
|
$hexval .= str_pad($string_array[$i], 2, "0", STR_PAD_LEFT);
|
|
|
|
if (($i+1) < count($string_array)) {
|
|
$hexval .= ":";
|
|
}
|
|
|
|
if ((hexdec($string_array[$i]) <= 31) || (hexdec($string_array[$i]) >= 127)) {
|
|
if ((($i+1) == sizeof($string_array)) && ($string_array[$i] == 0)) {
|
|
/* do nothing */
|
|
}else{
|
|
$ishex = true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if ($ishex) $string = $hexval;
|
|
}elseif (preg_match("/(hex:\?)?([a-fA-F0-9]{1,2}(:|\s)){5}/i", $string)) {
|
|
$octet = "";
|
|
|
|
/* strip off the 'hex:' */
|
|
$string = preg_replace("/hex: ?/i", "", $string);
|
|
|
|
/* split the hex on the delimiter */
|
|
$octets = preg_split("/\s|:/", $string);
|
|
|
|
/* loop through each octet and format it accordingly */
|
|
for ($i=0;($i<count($octets));$i++) {
|
|
$octet .= str_pad($octets[$i], 2, "0", STR_PAD_LEFT);
|
|
|
|
if (($i+1) < count($octets)) {
|
|
$octet .= ":";
|
|
}
|
|
}
|
|
|
|
/* copy the final result and make it upper case */
|
|
$string = strtoupper($octet);
|
|
}elseif (preg_match("/Timeticks:\s\((\d+)\)\s/", $string, $matches)) {
|
|
$string = $matches[1];
|
|
}
|
|
|
|
foreach($banned_snmp_strings as $item) {
|
|
if(strstr($string, $item) != "") {
|
|
$string = "";
|
|
break;
|
|
}
|
|
}
|
|
|
|
return $string;
|
|
}
|
|
|
|
function snmp_get_method($version = 1) {
|
|
if ((function_exists("snmpget")) && ($version == 1)) {
|
|
return SNMP_METHOD_PHP;
|
|
}else if ((function_exists("snmp2_get")) && ($version == 2)) {
|
|
return SNMP_METHOD_PHP;
|
|
}else if ((function_exists("snmp3_get")) && ($version == 3)) {
|
|
return SNMP_METHOD_PHP;
|
|
}else if ((($version == 2) || ($version == 3)) && (file_exists(read_config_option("path_snmpget")))) {
|
|
return SNMP_METHOD_BINARY;
|
|
}else if (function_exists("snmpget")) {
|
|
/* last resort (hopefully it isn't a 64-bit result) */
|
|
return SNMP_METHOD_PHP;
|
|
}else if (file_exists(read_config_option("path_snmpget"))) {
|
|
return SNMP_METHOD_BINARY;
|
|
}
|
|
/* looks like snmp is broken */
|
|
return SNMP_METHOD_BINARY;
|
|
}
|
|
|