check_xml_response

#!/usr/bin/php
<?php
// return code: 0 OK | 1 Warning | 2 Critical | 3 Unknown

function usage() {
	echo <<<TXT
Usage: {$argv[0]} [URL] [method] [xml_file]

Example: {$argv[0]} http://example.com/callback POST request.xml
{$argv[0]} http://example.com/search.php?q=X GET

Will return success if the XML response is > 1 in length
Will return failure if server error or < 1 in length

TXT;
	exit(3);
}

if (count($argv) < 3) {
	usage();
}

$ch = curl_init();
$url = $argv[1];

if ($argv[2] == "POST") {
	$xml = @file_get_contents($argv[3]);
	if (!$xml) {
		echo "Could not read file contents of {$argv[2]}\n";
		exit(3);
	}
	
	curl_setopt($ch, CURLOPT_HTTPHEADER, array(
	    'Content-Type: text/xml; charset=UTF-8',
	    'Content-Length: ' . strlen($xml)
	));
	
	curl_setopt($ch, CURLOPT_POSTFIELDS, $xml);
	curl_setopt($ch, CURLOPT_POST, TRUE);
}

curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_0);
curl_setopt($ch, CURLOPT_TIMEOUT, 300);
curl_setopt($ch, CURLOPT_HTTPPROXYTUNNEL, FALSE);
curl_setopt($ch, CURLOPT_PROXY, '');

$response = curl_exec($ch);
$info = curl_getinfo($ch);

if ($info['http_code'] != 200) {
	$curl_error = curl_error($ch);
	echo "Error: HTTP code was {$info['http_code']}, response was $curl_error\n";
	exit(1);
}

if (strlen($response) > 1) {
	echo "OK: response was $response\n";
	exit(0);
}

echo "Error: response length was less than 1\n";
exit(1);