pull.php

<?php

ignore_user_abort(true);
function syscall ($cmd, $cwd) {
  $descriptorspec = array(
    1 => array('pipe', 'w'), // stdout is a pipe that the child will write to
    2 => array('pipe', 'w') // stderr
  );
  $resource = proc_open($cmd, $descriptorspec, $pipes, $cwd);
  if (is_resource($resource)) {
    $output = stream_get_contents($pipes[2]);
    $output .= PHP_EOL;
    $output .= stream_get_contents($pipes[1]);
    $output .= PHP_EOL;
    fclose($pipes[1]);
    fclose($pipes[2]);
    proc_close($resource);
    return $output;
  }
}


function git_current_branch ($cwd) {
  $result = syscall('git branch', $cwd);
  if (preg_match('/\\* (.*)/', $result, $matches)) {
    return $matches[1];
  }
}
$data = file_get_contents("php://input");
// Use in the "Post-Receive URLs" section of your GitHub repo.
if ( $data ) {
	$payload = json_decode($data);
	$branch = substr($payload->ref, strrpos($payload->ref, '/') + 1);
	echo syscall( 'whoami && cd /var/www/kiosk/ && git reset --hard HEAD && git stash && git pull',$cwd );
	if ($branch == git_current_branch($cwd)) {
		// pull from $branch
		$cmd = sprintf('git pull origin %s', $branch);
		$result = syscall($cmd, $cwd);
		$output = '';
		// append commits
		foreach ($payload->commits as $commit) {
		  $output .= $commit->author->name.' a.k.a. '.$commit->author->username;
		  $output .= PHP_EOL;
		  foreach (array('added', 'modified', 'removed') as $action) {
			if (count($commit->{$action})) {
			  $output .= sprintf('%s: %s; ', $action, implode(',', $commit->{$action}));
			}
		  }
		  $output .= PHP_EOL;
		  $output .= sprintf('because: %s', $commit->message);
		  $output .= PHP_EOL;
		  $output .= $commit->url;
		  $output .= PHP_EOL;
		}
		$output .= PHP_EOL;
		$output .= $result;
		echo $output;
		mail('taylor@tjon.es', 'GitHub hook `'.$cmd.'` result', $output);
	}
}
?>