Slackify the Zabbix alerts

zabbix-slack.php

#!/usr/bin/env php
<?php
/**
 * Slackify Zabbix Alerts
 *
 * @copyright 2019, David Lundgren <dlundgren@syberisle.net>
 * @license   MIT
 */
function get_key($argv, $pos, $shopts, $lopts)
{
	$key = $check = $value = null;
	if (array_key_exists($pos, $argv) && $argv[$pos]{0} === '-') {
		$key = ltrim($argv[$pos], '-');
		if (strpos($key, '=') !== false) {
			list($key, $value) = explode('=', $key, 2);
			$value = trim($value, '"\'');
		}
		if (array_key_exists($key, $lopts)) {
			$check = $lopts[$key];
		}
		elseif (array_key_exists($key, $shopts)) {
			$check = $shopts[$key];
		}
		elseif (array_key_exists($key{0}, $shopts)) {
			$check = $shopts[$key{0}];
			$value = substr($key, 1);
			$key   = $key{0};
		}
		else {
			$key = null;
		}
	}

	return array($key, $check, $value);
}

function parse_args($shopt = '', $lopt = [], $argv = null)
{
	if ($argv === null) {
		$argv = $GLOBALS['argv'];
	}
	$lopts = array();
	foreach ($lopt as $v) {
		@list($lo, $par) = explode(':', $v, 2);
		$lopts[$lo] = $par;
	}
	foreach (preg_split('/([a-zA-Z0-9]:?:?)/i', $shopt, -1, PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE) as $v) {
		@list($chr, $par) = explode(':', $v, 2);
		$shopts[$chr] = $par;
	}
	$options = array();
	$argn    = count($argv);
	for ($pos = 0; $pos < $argn; $pos++) {
		list($key, $check, $value) = get_key($argv, $pos, $shopts, $lopts);
		if ($key) {
			$next = false;
			if ($value === null) {
				list($next) = get_key($argv, $pos + 1, $shopts, $lopts);
				if ($next === null) {
					$value = $argv[$pos + 1];
				}
			}
			switch ($check) {
				case '':
					if ($next && $value === null) {
						die("Missing value for `{$key}`");
					}
					if ($next !== false) {
						$pos++;
					}
					break;
				case ':':
					if ($next === false) {
						$pos++;
						break;
					}
				case null:
					$value = array_key_exists($key, $options)
						? $options[$key] + 1
						: 1;
					break;
			}
		}
		if ($value) {
			$options[$key] = $value;
		}
	}

	return $options;
}

// }}}
// {{{ Script Configuration
// set the options that will be used
$opts   = array(
	'u:' => 'url:',
	'c:' => 'channel:',
	'f:' => 'from:',
	's:' => 'subject:',
	'm:' => 'message:',
);
$colors = array(
	'Not Classified' => '#DBDBDB',
	'Information'    => '#33CCFF',
	'Warning'        => 'warning',
	'Average'        => 'warning',
	'High'           => 'warning',
	'PROBLEM:'       => 'danger',
	'RESOLVED:'      => 'good',
	'UPDATED:'       => 'warning',
	'PROBLEM>:'      => 'danger',
	'RESOLVED>:'     => 'good',
	'UPDATED>:'      => 'warning',
	'Disaster'       => 'danger',
	'OK'             => 'good',
);

// Default Configuration
$config = array(
	'url'     => 'https://www.example.com',
	'channel' => '#alerts',
	'from'    => 'Zabbix',
	'subject' => 'Not Classified',
	'message' => 'Message'
);

// }}}
// {{{ Execution
// get the console arguments
$options = parse_args(join('', array_keys($opts)), array_values($opts));
foreach ($opts as $short => $long) {
	$short = rtrim($short, ':');
	$long  = rtrim($long, ':');
	if (isset($options[$short])) {
		$config[$long] = $options[$short];
	}
	if (isset($options[$long])) {
		$config[$long] = $options[$long];
	}
}

$color = $colors['Not Classified'];
foreach ($colors as $status => $hex) {
	if (strpos($config['subject'], $status) !== false) {
		$color = $hex;
		break;
	}
}

// parse the message for any buttons
$buttons = [];
if (preg_match_all('/{{(.*?)}}\n?/', $config['message'], $m)) {
	foreach ($m[1] as $link) {
		$b = explode("|", $link);
		$button = [
			'type' => 'button',
			'text' => $b[1],
			'url'  => $b[0]
		];

		if (isset($b[2])) {
			$button['style'] = $b[2];
		}

		$buttons[] = $button;
	}

	foreach ($m[0] as $link) {
		$config['message'] = str_replace($link, '', $config['message']);
	}
}

$payload = array(
	'channel'     => $config['channel'],
	'username'    => $config['from'],
	'attachments' => array(
		array(
			"fallback" => $config['subject'],
			"title"    => $config['subject'],
			"text"     => trim($config['message']),
			"color"    => $color,
		)
	)
);

if (!empty($buttons)) {
	$payload['attachments'][0]['actions'] = $buttons;
}

$c = curl_init($config['url']);
curl_setopt($c, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($c, CURLOPT_POST, true);
curl_setopt($c, CURLOPT_POSTFIELDS, array('payload' => json_encode($payload)));
curl_setopt($c, CURLOPT_RETURNTRANSFER, true);
$output = curl_exec($c);
curl_close($c);

zabbix-slack.php --url="https://www.slack.com/some/hook/path" --from="Your Zabbix" --message="{ALERT.MESSAGE}" --subject="{ALERT.SUBJECT}"

Your message can now contain buttons

message {{https://zabbix.example.com/zabbix.php/tr_events.php?triggerid={TRIGGER.ID}&eventid={EVENT.ID}|View Incident|primary}}
{{https://www.example.com|Visit Site}}

Those will display 2 buttons.