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be24993cbb
* Remove snmp functions that are barely used Replace them with SnmpQuery calls * Apply fixes from StyleCI * Fix missing namespace * Import Oid * No more variables left may be repeated multiple times at the end with snmpsim, remove them all * update data fixed by SnmpResponse bugfix --------- Co-authored-by: StyleCI Bot <bot@styleci.io>
102 lines
2.6 KiB
PHP
102 lines
2.6 KiB
PHP
<?php
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/*
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* Snmp.php
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*
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* -Description-
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (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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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* @package LibreNMS
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* @link http://librenms.org
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* @copyright 2022 Tony Murray
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* @author Tony Murray <murraytony@gmail.com>
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*/
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namespace LibreNMS\Util;
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use Cache;
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use LibreNMS\Exceptions\InvalidOidException;
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class Oid
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{
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public static function isNumeric(string $oid): bool
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{
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return (bool) preg_match('/^[.\d]+$/', $oid);
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}
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public static function hasNumericRoot(string $oid): bool
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{
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return (bool) preg_match('/^\.?1/', $oid);
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}
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public static function hasNumeric(array $oids): bool
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{
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foreach ($oids as $oid) {
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if (self::isNumeric($oid)) {
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return true;
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}
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}
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return false;
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}
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/**
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* Converts an oid to numeric and caches the result
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*
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* @throws \LibreNMS\Exceptions\InvalidOidException
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*/
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public static function toNumeric(string $oid, string $mib = 'ALL', int $cache = 1800): string
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{
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if (Oid::isNumeric($oid)) {
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return $oid;
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}
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// we already have a specific mib, don't add a bunch of others
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if (str_contains($oid, '::')) {
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$mib = null;
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}
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$key = 'Oid:toNumeric:' . $oid . '/' . $mib;
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$numeric_oid = Cache::remember($key, $cache, function () use ($oid, $mib) {
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$snmpQuery = \SnmpQuery::numeric();
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if ($mib) {
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$snmpQuery->mibs([$mib], append: $mib !== 'ALL'); // append to base mibs unless using ALL
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}
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return $snmpQuery->translate($oid);
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});
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if (empty($numeric_oid)) {
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throw new InvalidOidException("Unable to translate oid $oid");
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}
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return $numeric_oid;
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}
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/**
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* Convert a string to an oid encoded string
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*/
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public static function ofString(string $string): string
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{
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$oid = strlen($string);
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for ($i = 0; $i != strlen($string); $i++) {
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$oid .= '.' . ord($string[$i]);
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}
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return $oid;
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}
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}
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