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https://github.com/librenms/librenms.git
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c2cdf14223
* Add syslog alert transport and docs * Remove redundant priority variable * Log syslog transport events as critical
111 lines
3.3 KiB
PHP
111 lines
3.3 KiB
PHP
/* LibreNMS
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*
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* Copyright (C) 2017 Paul Blasquez <pblasquez@gmail.com>
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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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$syslog_host = '127.0.0.1';
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$syslog_port = 514;
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$state = "Unknown";
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$facility = 24; // Default facility is 3 * 8 (daemon)
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$severity = 6; // Default severity is 6 (Informational)
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$sev_txt = "OK";
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$device = device_by_id_cache($obj['device_id']); // for event logging
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if (!empty($opts['syslog_facility']) && preg_match("/^\d+$/", $opts['syslog_facility'])) {
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$facility = (int)$opts['syslog_facility'] * 8;
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} else {
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log_event("Syslog facility is not an integer: " . $opts['syslog_facility'], $device, 'poller', 5);
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}
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if (!empty($opts['syslog_host'])) {
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if (preg_match("/[a-zA-Z]/", $opts['syslog_host'])) {
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$syslog_host = gethostbyname($opts['syslog_host']);
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if ($syslog_host === $opts['syslog_host']) {
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log_event("Alphanumeric hostname found but does not resolve to an IP.", $device, 'poller', 5);
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return false;
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}
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} elseif (filter_var($opts['syslog_host'], FILTER_VALIDATE_IP)) {
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$syslog_host = $opts['syslog_host'];
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} else {
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log_event("Syslog host is not a valid IP: " . $opts['syslog_host'], $device, 'poller', 5);
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return false;
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}
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} else {
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log_event("Syslog host is empty.", $device, 'poller');
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}
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if (!empty($opts['syslog_port']) && preg_match("/^\d+$/", $opts['syslog_port'])) {
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$syslog_port = $opts['syslog_port'];
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} else {
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log_event("Syslog port is not an integer.", $device, 'poller', 5);
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}
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switch( $obj['severity'] ) {
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case "critical":
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$severity = 2;
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$sev_txt = "Critical";
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break;
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case "warning":
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$severity = 4;
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$sev_txt = "Warning";
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break;
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}
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switch( $obj['state'] ) {
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case 0:
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$state = "OK";
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$severity = 6;
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break;
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case 1:
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$state = $sev_txt;
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break;
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case 2:
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$state = "Acknowledged";
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$severity = 6;
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break;
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}
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$priority = $facility + $severity;
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$syslog_prefix = '<'
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. $priority
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. '> '
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. date('M d H:i:s ')
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. gethostname()
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. ' librenms'
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. '['
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. $obj['device_id']
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. ']: '
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. $obj['hostname']
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. ': ['
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. $state
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. '] '
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. $obj['name']
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;
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if (($socket = socket_create(AF_INET, SOCK_DGRAM, SOL_UDP)) === false) {
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log_event("socket_create() failed: reason: " . socket_strerror(socket_last_error()), $device, 'poller', 5);
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return false;
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} else {
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if( !empty( $obj['faults'] ) ) {
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foreach($obj['faults'] as $k => $v) {
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$syslog_msg = $syslog_prefix . ' - ' . $v['string'];
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socket_sendto($socket, $syslog_msg, strlen($syslog_msg), 0, $syslog_host, $syslog_port);
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}
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} else {
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$syslog_msg = $syslog_prefix;
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socket_sendto($socket, $syslog_msg, strlen($syslog_msg), 0, $syslog_host, $syslog_port);
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}
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socket_close($socket);
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}
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return true;
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