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@turtlepod
Forked from milo/github-webhook-handler.php
Created September 15, 2016 02:43
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<?php
/**
* GitHub webhook handler template.
*
* @see https://developer.github.com/webhooks/
* @author Miloslav Hůla (https://github.com/milo)
*/
$hookSecret = 's.e.c.r.e.t'; # set NULL to disable check
set_error_handler(function($severity, $message, $file, $line) {
throw new \ErrorException($message, 0, $severity, $file, $line);
});
set_exception_handler(function($e) {
header('HTTP/1.1 500 Internal Server Error');
echo "Error on line {$e->getLine()}: " . htmlSpecialChars($e->getMessage());
die();
});
$rawPost = NULL;
if ($hookSecret !== NULL) {
if (!isset($_SERVER['HTTP_X_HUB_SIGNATURE'])) {
throw new \Exception("HTTP header 'X-Hub-Signature' is missing.");
} elseif (!extension_loaded('hash')) {
throw new \Exception("Missing 'hash' extension to check the secret code validity.");
}
list($algo, $hash) = explode('=', $_SERVER['HTTP_X_HUB_SIGNATURE'], 2) + array('', '');
if (!in_array($algo, hash_algos(), TRUE)) {
throw new \Exception("Hash algorithm '$algo' is not supported.");
}
$rawPost = file_get_contents('php://input');
if ($hash !== hash_hmac($algo, $rawPost, $hookSecret)) {
throw new \Exception('Hook secret does not match.');
}
};
if (!isset($_SERVER['HTTP_CONTENT_TYPE'])) {
throw new \Exception("Missing HTTP 'Content-Type' header.");
} elseif (!isset($_SERVER['HTTP_X_GITHUB_EVENT'])) {
throw new \Exception("Missing HTTP 'X-Github-Event' header.");
}
switch ($_SERVER['HTTP_CONTENT_TYPE']) {
case 'application/json':
$json = $rawPost ?: file_get_contents('php://input');
break;
case 'application/x-www-form-urlencoded':
$json = $_POST['payload'];
break;
default:
throw new \Exception("Unsupported content type: $_SERVER[HTTP_CONTENT_TYPE]");
}
# Payload structure depends on triggered event
# https://developer.github.com/v3/activity/events/types/
$payload = json_decode($json);
switch (strtolower($_SERVER['HTTP_X_GITHUB_EVENT'])) {
case 'ping':
echo 'pong';
break;
// case 'push':
// break;
// case 'create':
// break;
default:
header('HTTP/1.0 404 Not Found');
echo "Event:$_SERVER[HTTP_X_GITHUB_EVENT] Payload:\n";
print_r($payload); # For debug only. Can be found in GitHub hook log.
die();
}
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