<?php
namespace LAM\UPLOAD;
use \htmlStatusMessage;
use \htmlLink;
use \htmlOutputText;
use \htmlButton;
use \htmlHiddenInput;
use \htmlResponsiveRow;
/*

  This code is part of LDAP Account Manager (http://www.ldap-account-manager.org/)
  Copyright (C) 2004 - 2018  Roland Gruber

  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

*/

/**
* Creates the accounts by parsing the uploaded file.
*
* @author Roland Gruber
* @package tools
*/

/** security functions */
include_once(__DIR__ . "/../../lib/security.inc");
/** access to configuration */
include_once(__DIR__ . '/../../lib/config.inc');
/** status messages */
include_once(__DIR__ . '/../../lib/status.inc');
/** account modules */
include_once(__DIR__ . '/../../lib/modules.inc');


// Start session
startSecureSession();
enforceUserIsLoggedIn();

// check if this tool may be run
checkIfToolIsActive('toolFileUpload');

// die if no write access
if (!checkIfWriteAccessIsAllowed()) die();

// Redirect to startpage if user is not logged in
if (!isLoggedIn()) {
	metaRefresh("../login.php");
	exit;
}

// Set correct language, codepages, ....
setlanguage();

if (!empty($_POST)) {
	validateSecurityToken();
}

// show LDIF if requested
if (isset($_GET['showldif'])) {
	//download file
	header('Content-Type: text/plain');
	header('Content-disposition: attachment; filename=lam.ldif');
	$accounts = unserialize(lamDecrypt($_SESSION['mass_accounts']));
	foreach ($accounts as $account) {
		echo "DN: " . $account['dn'] . "\n";
		unset($account['dn']);
		$keys = array_keys($account);
		foreach ($keys as $key) {
			if (strpos($key, 'INFO.') === 0) {
				continue;
			}
			if (is_array($account[$key])) {
				foreach ($account[$key] as $value) {
					echo $key . ": " . $value . "\n";
				}
			}
			else {
				echo $key . ": " . $account[$key] . "\n";
			}
		}
		echo "\n";
	}
	exit;
}

include __DIR__ . '/../../lib/adminHeader.inc';
$typeId = htmlspecialchars($_POST['typeId']);
$typeManager = new \LAM\TYPES\TypeManager();
$type = $typeManager->getConfiguredType($typeId);

// check if account type is ok
if ($type->isHidden()) {
	logNewMessage(LOG_ERR, 'User tried to access hidden upload: ' . $type->getId());
	die();
}
if (!checkIfNewEntriesAreAllowed($type->getId()) || !checkIfWriteAccessIsAllowed($type->getId())) {
	logNewMessage(LOG_ERR, 'User tried to access forbidden upload: ' . $type->getId());
	die();
}

echo '<form enctype="multipart/form-data" action="masscreate.php" method="post">';
echo '<div class="' . $type->getScope() . '-bright smallPaddingContent">';
$container = new htmlResponsiveRow();

$selectedModules = explode(',', $_POST['selectedModules']);
if ($_FILES['inputfile'] && ($_FILES['inputfile']['size'] > 0)) {
	// check if input file is well formatted
	$data = array();  // input values without first row
	$ids = array();  // <column name> => <column number for $data>
	// get input fields from modules
	$columns = getUploadColumns($type, $selectedModules);
	// read input file
	$handle = fopen ($_FILES['inputfile']['tmp_name'], "r");
	if (($head = fgetcsv($handle, 2000)) !== false ) { // head row
		foreach ($head as $i => $headItem) {
			$ids[$headItem] = $i;
		}
	}
	while (($line = fgetcsv($handle, 2000)) !== false ) { // account rows
		$data[] = $line;
	}

	$errors = array();

	// check if all required columns are present
	$checkcolumns = array();
	$columns = call_user_func_array('array_merge', $columns);
	foreach ($columns as $column) {
		if (isset($column['required']) && ($column['required'] === true)) {
			if (isset($ids[$column['name']])) $checkcolumns[] = $ids[$column['name']];
			else $errors[] = array(_("A required column is missing in your CSV file."), $column['name']);
		}
	}

	// check if all required attributes are given
	$invalidColumns = array();
	$id_names = array_keys($ids);
	foreach ($checkcolumns as $checkcolumn) {
		foreach ($data as $dataRow) {
			if (empty($dataRow[$checkcolumn])) {
				$invalidColumns[] = $id_names[$checkcolumn];
				break;
			}
		}
	}
	foreach ($data as $dataRow) {
		if (empty($dataRow[$ids['dn_rdn']])) {
			$invalidColumns[] = 'dn_rdn';
			break;
		}
	}
	foreach ($invalidColumns as $invalidColumn) {
		$errors[] = array(_("One or more values of the required column \"$invalidColumn\" are missing."), "");
	}

	// check if values in unique columns are correct
	foreach ($columns as $column) {
		if (isset($column['unique']) && ($column['unique'] === true) && isset($ids[$column['name']])) {
			$colNumber = $ids[$column['name']];
			$values_given = array();
			foreach ($data as $dataRow) {
				$values_given[] = $dataRow[$colNumber];
			}
			$values_unique = array_unique($values_given);
			if (sizeof($values_given) != sizeof($values_unique)) {
				$duplicates = array();
				foreach ($values_given as $key => $value) {
					if (!isset($values_unique[$key])) {
						$duplicates[] = htmlspecialchars($value);
					}
				}
				$duplicates = array_values(array_unique($duplicates));
				$errors[] = array(_("This column is defined to include unique entries but duplicates were found:") . ' ' . $column['name'], implode(', ', $duplicates));
			}
		}
	}

	// if input data is invalid just display error messages (max 50)
	if (sizeof($errors) > 0) {
		foreach ($errors as $error) {
			$container->add(new htmlStatusMessage("ERROR", $error[0], $error[1]), 12);
		}
		$container->addVerticalSpacer('2rem');
		massPrintBackButton($type->getId(), $selectedModules, $container);
	}

	// let modules build accounts
	else {
		$accounts = buildUploadAccounts($type, $data, $ids, $selectedModules, $container);
		if ($accounts !== false) {
			$rdnList = getRDNAttributes($type->getId(), $selectedModules);
			$suffix = $type->getSuffix();
			foreach ($accounts as $i => $account) {
				// set DN
				// check against list of possible RDN attributes
				if (!in_array($data[$i][$ids['dn_rdn']], $rdnList) || !isset($account[$data[$i][$ids['dn_rdn']]])) {
					$errors[] = array(_('Account %s:') . ' dn_rdn ' . $account[$data[$i][$ids['dn_rdn']]], _("Invalid RDN attribute!"), array($i));
				}
				else {
					$account_dn = $data[$i][$ids['dn_rdn']] . "=" . escapeRDN($account[$data[$i][$ids['dn_rdn']]]) . ",";
					if ($data[$i][$ids['dn_suffix']] == "") $account_dn = $account_dn . $suffix;
					else $account_dn = $account_dn . $data[$i][$ids['dn_suffix']];
					$accounts[$i]['dn'] = $account_dn;
				}
				// set overwrite
				if (isset($ids['overwrite']) && ($data[$i][$ids['overwrite']] === 'true')) {
					$accounts[$i]['INFO.overwrite'] = 'true';
				}
			}
			// print errors if DN could not be built
			if (sizeof($errors) > 0) {
				foreach ($errors as $error) {
					$container->add(new htmlStatusMessage("ERROR", $error[0], $error[1], $error[2]), 12);
				}
			}
			else {
				// store accounts in session
				$_SESSION['mass_accounts'] = lamEncrypt(serialize($accounts));
				$_SESSION['mass_errors'] = array();
				$_SESSION['mass_failed'] = array();
				$_SESSION['mass_postActions'] = array();
				$_SESSION['mass_data'] = lamEncrypt(serialize($data));
				$_SESSION['mass_ids'] = $ids;
				$_SESSION['mass_typeId'] = $type->getId();
				$_SESSION['mass_selectedModules'] = $selectedModules;
				if (isset($_SESSION['mass_pdf'])) {
					unset($_SESSION['mass_pdf']);
				}
				if (isset($_POST['createPDF']) && ($_POST['createPDF'] == 'on')) {
					$_SESSION['mass_pdf']['structure'] = $_POST['pdfStructure'];
					$_SESSION['mass_pdf']['font'] = $_POST['pdf_font'];
					$_SESSION['mass_pdf']['counter'] = 0;
					$_SESSION['mass_pdf']['file'] = '../../tmp/lam_pdf' . getRandomNumber() . '.zip';
				}
				else {
					$_SESSION['mass_pdf']['structure'] = null;
				}
				// show links for upload and LDIF export
				$container->addVerticalSpacer('2rem');
				$container->add(new htmlOutputText(_("LAM has checked your input and is now ready to create the accounts.")), 12);
				$container->addVerticalSpacer('4rem');
				$link = new htmlLink(_("Upload accounts to LDAP"), 'massDoUpload.php', '../../graphics/up.gif', true);
				$link->setCSSClasses(array('margin3'));
				$container->addLabel($link);
				$link = new htmlLink(_("Show LDIF file"), 'massBuildAccounts.php?showldif=true', '../../graphics/edit.png', true);
				$link->setCSSClasses(array('margin3'));
				$container->addField($link);
				$container->addVerticalSpacer('2rem');
				massPrintBackButton($type->getId(), $selectedModules, $container);
			}
		}
		else {
			$container->addVerticalSpacer('2rem');
			massPrintBackButton($type->getId(), $selectedModules, $container);
		}
	}
}
else {
	$container->add(new htmlStatusMessage('ERROR', _('Please provide a file to upload.')), 12);
	$container->addVerticalSpacer('2rem');
	massPrintBackButton($type->getId(), $selectedModules, $container);
}

addSecurityTokenToMetaHTML($container);
$tabindex = 1;
parseHtml(null, $container, array(), false, $tabindex, $type->getScope());

echo '</div>';
echo '</form>';
include __DIR__ . '/../../lib/adminFooter.inc';

/**
 * Prints a back button to the page where the user enters a file to upload.
 *
 * @param String $typeId account type (e.g. user)
 * @param array $selectedModules selected modules for upload
 * @param htmlResponsiveRow $container table container
 */
function massPrintBackButton($typeId, $selectedModules, htmlResponsiveRow &$container) {
	$backButton = new htmlButton('submit', _('Back'));
	$backButton->setIconClass('backButton');
	$container->add($backButton, 12);
	$container->add(new htmlHiddenInput('type', $typeId), 12);
	$createPDF = 0;
	if (isset($_POST['createPDF']) && ($_POST['createPDF'] == 'on')) {
		$createPDF = 1;
	}
	$container->add(new htmlHiddenInput('createPDF', $createPDF), 12);
	$container->add(new htmlHiddenInput('pdfStructure', $_POST['pdfStructure']), 12);
	foreach ($selectedModules as $selectedModule) {
		$container->add(new htmlHiddenInput($typeId . '___' . $selectedModule, 'on'), 12);
	}
}

?>
