Webook deployment script

git-deploy.php

<?php

/** @var string Secret Key $secret */
$secret = '';

/** @var bool $debugging */
$debugging = false;

$webDirectory = '/var/www/html/';

/** @var array $headers */
$headers = getallheaders();

/** @var string $rawResponse (Payload) */
$rawResponse = file_get_contents( 'php://input' );

/** @var stdClass $decodedPayload */
$decodedPayload = json_decode( $rawResponse );

$repoSSHUrl = $decodedPayload->repository->ssh_url;

/** @var string $keyVerification */
$keyVerification = hash_hmac( 'sha1', $rawResponse, $secret );

if ( ! $debugging && ! isset( $headers['X-Hub-Signature'] ) || str_replace( 'sha1=', '',
		$headers['X-Hub-Signature'] ) !== $keyVerification
) {
	header( 'Invalid Git Key', true, 400 );
	exit;
}

/** Initialize The Bare Repository **/
if ( ! is_dir( $webDirectory . '/.git' ) ) {
	chdir($webDirectory);
	exec('git clone ' . $repoSSHUrl . ' . ');
}


/** Only Deploy on the master branch **/
if($decodedPayload->ref === 'refs/heads/master') {
	/** Site Specific Deployment **/

	/** Synchronize Working Directory **/
	chdir($webDirectory);
	exec('git pull');

	/** Run Gulp Task **/
	chdir($webDirectory . '/fabricator');
	exec($webDirectory . 'fabricator/node_modules/gulp/bin/gulp.js &');
}