* @author wojas
* @author Raam Dev
* @link https://github.com/ivuorinen/xkcd-Mailer
* @license The MIT License http://www.opensource.org/licenses/mit-license.php
* @version 1.0.20140525
*/
// Use config.example.php as base for your configurations.
$here = __DIR__;
if (! is_readable($here . '/config.php')) {
die("Please configure me. I don't know where I should sent the comic. (Config file {$here}/config.php missing.)");
}
require_once $here . '/config.php';
if (! isset($mail, $from) || empty($mail) || empty($from)) {
die('Configuration values $mail and $from cannot be empty');
}
$lastfile = $lastfile ?? 'last.txt';
$debug = $debug ?? false;
$send = $send ?? false;
$feed = "https://xkcd.com/atom.xml";
/**
* Get xml feed and parse it.
* Checks if http(s):// wrapper is allowed.
*
* @param string $feed Feed to fetch and parse.
*
* @return \SimpleXMLElement
*/
function getFeed(string $feed): SimpleXMLElement
{
if (ini_get('allow_url_fopen')) {
// https://bugs.php.net/bug.php?id=62577
return simplexml_load_string(file_get_contents($feed));
}
// If http:// wrapper is disabled (by allow_url_fopen=0, for example), then fall back on cURL
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $feed);
curl_setopt($ch, CURLOPT_FAILONERROR, 1);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_TIMEOUT, 15);
$result = curl_exec($ch);
curl_close($ch);
return simplexml_load_string($result);
}
$data = getFeed($feed);
$item = $data->entry[0];
$last = file_exists($lastfile)
? file_get_contents($lastfile)
: 0;
$parts = explode('/', $item->id, 4);
$current = (int) $parts[3];
if ($current > $last) {
$date = date("Y-m-d", strtotime($item->updated));
preg_match("#title=\"(.+)\"#iU", $item->summary, $t);
// To send HTML mail, the Content-type header must be set
$headers = "Content-type: text/html; charset=UTF-8\r\n" .
sprintf("From: %s\r\n", $from);
$subject = sprintf('xkcd %s: %s', $date, $item->title);
$punchline = $t[1];
$title = sprintf('', $item->id, $item->title);
$body = sprintf(
'Posted %s
%s
%s
',
$date,
$item->summary,
$punchline
);
$msg = sprintf(
"%s\n%s",
$title,
$body
);
if ($send) {
mail($mail, $subject, $msg, $headers);
} else {
echo htmlspecialchars($msg, ENT_QUOTES) . "\n\n";
}
$file_write_result = file_put_contents($lastfile, $current);
if (! $file_write_result) {
echo htmlspecialchars("Error writing to file: $lastfile\n", ENT_QUOTES);
exit(1);
}
if ($debug) {
echo htmlspecialchars("New last is $current (was $last)\n", ENT_QUOTES);
}
exit(0);
}
if ($debug) {
echo htmlspecialchars(
sprintf("No new XKCD: last=%d current=%d\n", $last, $current),
ENT_QUOTES
);
}