function __construct($extension = false)
{
$this->Extension = $extension;
// See if local will work
$path = $extension ? SERVER_ROOT . "extensions/{$extension}/" : SERVER_ROOT . "core/";
if (is_writable(SERVER_ROOT) && is_writable($path)) {
$this->Method = "Local";
} else {
// Can't use local, see what FTP methods are available
$ftp = new BigTreeFTP();
$sftp = new BigTreeSFTP();
if ($ftp->connect("localhost")) {
$this->Connection = $ftp;
$this->Method = "FTP";
} elseif ($sftp->connect("localhost")) {
$this->Connection = $ftp;
$this->Method = "SFTP";
}
}
}
if (is_dir($file)) {
rmdir($file);
} else {
unlink($file);
}
}
rmdir(SERVER_ROOT . "cache/update/");
unlink(SERVER_ROOT . "cache/update.zip");
BigTree::redirect(DEVELOPER_ROOT . "upgrade/database/");
} else {
// If we had to set a directory path we lost the POST
if (!count($_POST)) {
$_POST = $_SESSION["bigtree_admin"]["ftp"];
}
// Make sure FTP login works
$ftp = new BigTreeFTP();
if (!$ftp->connect("localhost")) {
BigTree::redirect(DEVELOPER_ROOT . "upgrade/failed/");
}
if (!$ftp->login($_POST["username"], $_POST["password"])) {
$admin->growl("Developer", "FTP Login Failed", "error");
BigTree::redirect(DEVELOPER_ROOT . "upgrade/login/?type=" . $_POST["type"]);
}
// Try to determine the FTP root.
$ftp_root = false;
if ($admin->settingExists("bigtree-internal-ftp-upgrade-root") && $ftp->changeDirectory($cms->getSetting("bigtree-internal-ftp-upgrade-root") . "core/inc/bigtree/")) {
$ftp_root = $cms->getSetting("bigtree-internal-ftp-upgrade-root");
} elseif ($ftp->changeDirectory(SERVER_ROOT . "inc/bigtree/")) {
$ftp_root = SERVER_ROOT;
} elseif ($ftp->changeDirectory("/core/inc/bigtree")) {
$ftp_root = "/";
