netcup Produkte per E-Mail abonnieren

netcup-produkte.php

#!/usr/bin/env php
<?php

function exception_error_handler($severity, $message, $file, $line)
{ throw new ErrorException($message, 0, $severity, $file, $line); }
set_error_handler('exception_error_handler'); error_reporting(-1);

$mail_recipient = 'recipient@example.net';
$mail_from = sprintf('%s@%s', posix_getlogin(), gethostname());
$xml_file = 'https://www.netcup.de/bestellen/netcupproduktexml.php';
$json_file = __dir__ . '/netcup-produkte.json';

try
{
	$json = json_decode(file_get_contents($json_file), true);
}
catch(Exception $e)
{
	$json = [];
}

if($verbose = ($argc > 1 && $argv[1] === '-v'))
{
	printf("Loading XML file: %s\n", $xml_file);
}

$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, $xml_file);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
$xml = new SimpleXMLElement(curl_exec($curl), LIBXML_COMPACT);
curl_close($curl);

foreach($xml->children() as $_)
{
	if(($id = (int) $_->attributes()->id))
	{
		if(!isset($json[$id]))
		{
			if($verbose)
			{
				printf("New element: ID %d\n", $id);
			}

			# ProduktMonategeschenkteGrundgebuehr, ProduktAnzahlDomainsinklusive, …
			if(!mail(
				$mail_recipient,
				sprintf("[%04d] %s", $id, $_->ProduktName),
				wordwrap(base64_encode(vsprintf("%s\n\nGrundgebühr:             %s\nEinrichtungsgebühr:      %s\nMindestvertragslaufzeit: %s\nAbrechnungsperiode:      %s\n\n%s\n",
				[
					trim($_->ProduktBeschreibung),
					$_->ProduktGrundgebuehr,
					$_->ProduktEinrichtungsgebuehr,
					$_->ProduktMindesvertragslaufzeit,
					$_->ProduktAbrechnungsperiode,
					(strpos($_->ProduktURL, '://') === false ? 'https://www.netcup.de' : '') . $_->ProduktURL,
				])), 75, "\n", true),
				sprintf("From: %s\nContent-Type: text/plain; charset=utf-8\nContent-Transfer-Encoding: base64", $mail_from)
			))
			{
				throw new Exception(sprintf('Could not send mail for element with ID %d', $id));
			}

			$json[$id] = time();
			file_put_contents($json_file, json_encode($json) . "\n", LOCK_EX);
		}
	}
	else
	{
		fwrite(STDERR, "WARNING: Invalid ID in XML data!\n");
	}
}

?>