friendica/mod/like.php

<?php

use Friendica\App;
use Friendica\Model\Item;
use Friendica\Util\Strings;

function like_content(App $a) {
	if (!local_user() && !remote_user()) {
		return false;
	}


	$verb = Strings::escapeTags(trim($_GET['verb']));

	if (!$verb) {
		$verb = 'like';
	}

	$item_id = (($a->argc > 1) ? Strings::escapeTags(trim($a->argv[1])) : 0);

	$r = Item::performLike($item_id, $verb);
	if (!$r) {
		return;
	}

	// See if we've been passed a return path to redirect to
	$return_path = defaults($_REQUEST, 'return', '');

	like_content_return($a, $return_path);
	exit();
}


// Decide how to return. If we were called with a 'return' argument,
// then redirect back to the calling page. If not, just quietly end

function like_content_return(App $a, $return_path) {
	if ($return_path) {
		$rand = '_=' . time();
		if (strpos($return_path, '?')) {
			$rand = "&$rand";
		} else {
			$rand = "?$rand";
		}

		$a->internalRedirect($return_path . $rand);
	}
}