<?php
/*
 * Gallery - a web based photo album viewer and editor
 * Copyright (C) 2000-2007 Bharat Mediratta
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or (at
 * your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA  02110-1301, USA.
 */

require_once(dirname(__FILE__) . '/../../lib/support/GallerySetupUtilities.class');

/**
 * Authentication
 * @package Install
 */
class AuthenticateStep extends InstallStep {
    var $_uniqueKey;
    var $_firstTime;

    function AuthenticateStep() {
	$this->_uniqueKey = GallerySetupUtilities::generateAuthenticationKey();
	$this->_firstTime = true;
    }

    function stepName() {
	return _('Authenticate');
    }

    function processRequest() {
	if (!empty($_GET['downloadLogin'])) {
	    GallerySetupUtilities::generateLoginTxtFile($this->_uniqueKey);
	    return false;
	}

	return true;
    }

    function loadTemplateData(&$templateData) {
	$authenticationDir = dirname(dirname(dirname(__FILE__)));

	if (!$this->isComplete()) {
	    /* Authenticate */
	    $authenticated = false;
	    $authFile = dirname(__FILE__) . '/../../login.txt';
	    if (!file_exists($authFile)) {
		if (!$this->_firstTime) {
		    $templateData['errors'][] =
			sprintf(_('<b>Error:</b> could not locate <b>login.txt</b>. ' .
				  'Please place it in your <tt>%s/</tt> directory.'),
				basename($authenticationDir));
		}
	    } else if (!is_readable($authFile)) {
		$templateData['errors'][] =
		    _('<b>Error:</b> your <b>login.txt</b> file is not readable. ' .
		      'Please give Gallery read permissions on the file.');
	    } else {

		$fileAuth = trim(join('', file($authFile)));
		if ($fileAuth == $this->_uniqueKey) {
		    /* Authenticate, but don'treset the login attempts because we have no db */
		    GallerySetupUtilities::authenticateThisSession(false);
		    $this->setComplete(true);
		} else {
		    $templateData['errors'][] =
			_('<b>Error:</b> your <b>login.txt</b> key does not match correctly. ' .
			  'Please download a new authentication string from below and try again.');
		}
	    }
	}

	$this->_firstTime = false;

	$templateData['authenticationDir'] = basename($authenticationDir);

	if ($this->isComplete()) {
	    $templateData['bodyFile'] = 'AuthenticateSuccessful.html';
	} else {
	    $templateData['bodyFile'] = 'AuthenticateRequest.html';
	}
    }

    function getUniqueKey() {
	return $this->_uniqueKey;
    }
}
?>