timeline/views/webmention_endpoint.php
2024-12-08 21:19:10 +01:00

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PHP
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<?php
# Source: https://gist.github.com/adactio/6484118
# Licensed under a CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
# http://creativecommons.org/publicdomain/zero/1.0/
// Set path to your mentions twtxt file:
$logfile = './mentions.txt'; /* Make sure file is writeable */
if (!isset($_POST['source']) || !isset($_POST['target'])) {
print('Please send a propper webmention to this endpoint');
header($_SERVER['SERVER_PROTOCOL'] . ' 400 Bad Request');
exit;
}
ob_start();
$ch = curl_init($_POST['source']);
curl_setopt($ch,CURLOPT_USERAGENT,'Timeline Twtxt Web-client (webmention.org)');
curl_setopt($ch,CURLOPT_HEADER,0);
$ok = curl_exec($ch);
curl_close($ch);
$sourceFile = ob_get_contents();
ob_end_clean();
// Log if Webmention is not a twtxt-formated by chekcing for text fragment:
if(!stristr($_POST['source'], ":~:text=")) {
$log = date("Y-m-d\TH:i:s\Z") . "\t"
."Recived a non-twtxt webmention from ".$_POST['source'].""
." mentioning ".$_POST['target'].""
." (IP: ".$_SERVER['REMOTE_ADDR'].")".""
.PHP_EOL;
file_put_contents($logfile, $log, FILE_APPEND);
exit;
}
// Process Webmentions with text fragment as to point to a twt in a twtxt.txt
if (stristr($sourceFile, $_POST['target'])) {
header($_SERVER['SERVER_PROTOCOL'] . ' 202 Accepted');
# Now do something with $sourceFile e.g. parse it for h-entry and h-card and store what you find.
// TODO: test if $url_time is to be found in $sourceFile
// and then write the $twt to the $log
$url_time = explode( "#:~:text=", $_POST['source'] ); // split source into array with [0] for url and [1] for datetime
//$url = preg_replace("(^https?://)", "", $url_time[0] );
$pattern = '/^'.$url_time[1].'\t(.*?)$/m';
preg_match($pattern, $sourceFile, $twt); // $twt[1] contains your line.
$log = date("Y-m-d\TH:i:s\Z") . "\t"
//.'You were mentioned in: <a href="'.$_POST['source'].',%0A" rel=noopener>'.$_POST['source'].'</a>' // "%0A" means new line
.'Mention from '.$url_time[0].' in <a href="'.$url_time[0].'#:~:text='.urlencode($url_time[1]).'" rel="noopener" target="_blank">'.$url_time[1].'</a>'
// TODO: find a way to make this as markdown and the render it with correct rel and target
."" // add a twt line break before blockquote
."> " . $twt[1]
.PHP_EOL;
file_put_contents($logfile, $log, FILE_APPEND);
# Send email fork: https://gist.github.com/otherjoel/9301d985622f0d3d1a09
}
else {
header($_SERVER['SERVER_PROTOCOL'] . ' 400 Bad Request');
exit;
}
?>