/**
* check requirements
*
* @param array $data return theme variables
* @return bool requirements met
*/
private function _check_requirements(&$aData)
{
// proceed variable check if all requirements are true. If any of them is false, proceed is set false.
$bProceed = true;
//lets be optimistic!
/**
* check image HTML template
*
* @param bool $result
*/
function check_HTML_image($result)
{
$aLabelYesNo = array('wrong', 'right');
return sprintf('<img src="%s/installer/images/tick-%s.png" alt="Found" />', Yii::app()->baseUrl, $aLabelYesNo[$result]);
}
function is_writable_recursive($sDirectory)
{
$sFolder = opendir($sDirectory);
while ($sFile = readdir($sFolder)) {
if ($sFile != '.' && $sFile != '..' && (!is_writable($sDirectory . "/" . $sFile) || is_dir($sDirectory . "/" . $sFile) && !is_writable_recursive($sDirectory . "/" . $sFile))) {
closedir($sFolder);
return false;
}
}
closedir($sFolder);
return true;
}
/**
* check for a specific PHPFunction, return HTML image
*
* @param string $function
* @param string $image return
* @return bool result
*/
function check_PHPFunction($sFunctionName, &$sImage)
{
$bExists = function_exists($sFunctionName);
$sImage = check_HTML_image($bExists);
return $bExists;
}
/**
* check if file or directory exists and is writeable, returns via parameters by reference
*
* @param string $path file or directory to check
* @param int $type 0:undefined (invalid), 1:file, 2:directory
* @param string $data to manipulate
* @param string $base key for data manipulation
* @param string $keyError key for error data
* @return bool result of check (that it is writeable which implies existance)
*/
function check_PathWriteable($path, $type, &$aData, $base, $keyError, $bRecursive = false)
{
$bResult = false;
$aData[$base . 'Present'] = 'Not Found';
$aData[$base . 'Writable'] = '';
switch ($type) {
case 1:
$exists = is_file($path);
break;
case 2:
$exists = is_dir($path);
break;
default:
throw new Exception('Invalid type given.');
}
if ($exists) {
$aData[$base . 'Present'] = 'Found';
if (!$bRecursive && is_writable($path) || $bRecursive && is_writable_recursive($path)) {
$aData[$base . 'Writable'] = 'Writable';
$bResult = true;
} else {
$aData[$base . 'Writable'] = 'Unwritable';
}
}
$bResult || ($aData[$keyError] = true);
return $bResult;
}
/**
* check if file exists and is writeable, returns via parameters by reference
*
* @param string $file to check
* @param string $data to manipulate
* @param string $base key for data manipulation
* @param string $keyError key for error data
* @return bool result of check (that it is writeable which implies existance)
*/
function check_FileWriteable($file, &$data, $base, $keyError)
{
return check_PathWriteable($file, 1, $data, $base, $keyError);
}
/**
* check if directory exists and is writeable, returns via parameters by reference
*
* @param string $directory to check
* @param string $data to manipulate
* @param string $base key for data manipulation
* @param string $keyError key for error data
* @return bool result of check (that it is writeable which implies existance)
*/
function check_DirectoryWriteable($directory, &$data, $base, $keyError, $bRecursive = false)
{
return check_PathWriteable($directory, 2, $data, $base, $keyError, $bRecursive);
}
// version check
if (version_compare(PHP_VERSION, '5.3.0', '<')) {
$bProceed = !($aData['verror'] = true);
}
if (convertPHPSizeToBytes(ini_get('memory_limit')) / 1024 / 1024 < 64 && ini_get('memory_limit') != -1) {
$bProceed = !($aData['bMemoryError'] = true);
}
// mbstring library check
if (!check_PHPFunction('mb_convert_encoding', $aData['mbstringPresent'])) {
$bProceed = false;
}
// JSON library check
if (!check_PHPFunction('json_encode', $aData['bJSONPresent'])) {
$bProceed = false;
}
// ** file and directory permissions checking **
// config directory
if (!check_DirectoryWriteable(Yii::app()->getConfig('rootdir') . '/application/config', $aData, 'config', 'derror')) {
$bProceed = false;
}
// templates directory check
if (!check_DirectoryWriteable(Yii::app()->getConfig('tempdir') . '/', $aData, 'tmpdir', 'tperror', true)) {
$bProceed = false;
}
//upload directory check
if (!check_DirectoryWriteable(Yii::app()->getConfig('uploaddir') . '/', $aData, 'uploaddir', 'uerror', true)) {
$bProceed = false;
}
// Session writable check
$session = Yii::app()->session;
/* @var $session CHttpSession */
$sessionWritable = $session->get('saveCheck', null) === 'save';
$aData['sessionWritable'] = $sessionWritable;
$aData['sessionWritableImg'] = check_HTML_image($sessionWritable);
if (!$sessionWritable) {
// For recheck, try to set the value again
$session['saveCheck'] = 'save';
$bProceed = false;
}
// ** optional settings check **
// gd library check
if (function_exists('gd_info')) {
$aData['gdPresent'] = check_HTML_image(array_key_exists('FreeType Support', gd_info()));
} else {
$aData['gdPresent'] = check_HTML_image(false);
}
// ldap library check
check_PHPFunction('ldap_connect', $aData['ldapPresent']);
// php zip library check
check_PHPFunction('zip_open', $aData['zipPresent']);
// zlib php library check
check_PHPFunction('zlib_get_coding_type', $aData['zlibPresent']);
// imap php library check
check_PHPFunction('imap_open', $aData['bIMAPPresent']);
return $bProceed;
}
function getMaximumFileUploadSize()
{
return min(convertPHPSizeToBytes(ini_get('post_max_size')), convertPHPSizeToBytes(ini_get('upload_max_filesize')));
}
<td>64MB</td>
<td><?php
if (isset($bMemoryError) && $bMemoryError) {
?>
<span style='font-weight:bold; color: red'><?php
eT("Too low");
?>
: <?php
echo convertPHPSizeToBytes(ini_get('memory_limit')) / 1024 / 1024;
?>
MB</span>
<?php
} elseif (ini_get('memory_limit') == '-1') {
eT("Unlimited");
} else {
echo convertPHPSizeToBytes(ini_get('memory_limit')) / 1024 / 1024;
echo ' MB';
}
?>
</td>
</tr>
<tr>
<td><?php
eT("PHP PDO driver library");
?>
</td>
<td><?php
eT("At least one installed");
?>
</td>
<td><?php
function getMaximumFileUploadSize()
{
$get_min = min(convertPHPSizeToBytes(ini_get('post_max_size')), convertPHPSizeToBytes(ini_get('upload_max_filesize')));
if ($get_min == convertPHPSizeToBytes(ini_get('post_max_size'))) {
return ini_get('post_max_size');
} else {
return ini_get('upload_max_filesize');
}
}
<th class='text-center'><?php $clang->eT("Current"); ?></th>
</tr>
</thead>
<tbody>
<tr>
<td><?php $clang->eT("PHP version"); ?></td>
<td>5.3.0+</td>
<td><?php if (isset($verror) && $verror) { ?><span style='font-weight:bold; color: red'><?php $clang->eT("Outdated"); ?>: <?php echo $phpVersion; ?></span>
<?php } else { ?><?php echo $phpVersion ; ?> <?php } ?></td>
</tr>
<tr>
<td><?php $clang->eT("Minimum memory available"); ?></td>
<td>64MB</td>
<td><?php
if (isset($bMemoryError) && $bMemoryError) { ?><span style='font-weight:bold; color: red'><?php $clang->eT("Too low"); ?>: <?php echo convertPHPSizeToBytes(ini_get('memory_limit'))/1024/1024; ?>MB</span>
<?php } elseif (ini_get('memory_limit')=='-1') $clang->eT("Unlimited"); else { echo convertPHPSizeToBytes(ini_get('memory_limit'))/1024/1024; echo ' MB';} ?></td>
</tr>
<tr>
<td><?php $clang->eT("PHP PDO driver library"); ?></td>
<td><?php $clang->eT("At least one installed"); ?></td>
<td><?php if (count($dbtypes)==0) { ?><span style='font-weight:bold; color: red'><?php $clang->eT("None found"); ?></span>
<?php } else { ?><?php echo implode(', ',$dbtypes); ?> <?php } ?></td>
</tr>
<tr>
<td><?php $clang->eT("PHP mbstring library"); ?></td>
<td><img src="<?php echo Yii::app()->baseUrl; ?>/installer/images/tick-right.png" alt="Yes" /></td>
<td><?php echo $mbstringPresent; ?></td>
</tr>
<tr>
<td><?php $clang->eT("PHP/PECL JSON library"); ?></td>
<td><img src="<?php echo Yii::app()->baseUrl; ?>/installer/images/tick-right.png" alt="Yes" /></td>
protected function _init()
{
// Check for most necessary requirements
// Now check for PHP & db version
// Do not localize/translate this!
$dieoutput = '';
if (version_compare(PHP_VERSION, '5.3.3', '<')) {
$dieoutput .= 'This script can only be run on PHP version 5.3.3 or later! Your version: ' . PHP_VERSION . '<br />';
}
if (!function_exists('mb_convert_encoding')) {
$dieoutput .= "This script needs the PHP Multibyte String Functions library installed: See <a href='http://manual.limesurvey.org/wiki/Installation_FAQ'>FAQ</a> and <a href='http://de.php.net/manual/en/ref.mbstring.php'>PHP documentation</a><br />";
}
if ($dieoutput != '') {
throw new CException($dieoutput);
}
if (ini_get("max_execution_time") < 1200) {
@set_time_limit(1200);
}
// Maximum execution time - works only if safe_mode is off
if (ini_get('memory_limit') != -1 && convertPHPSizeToBytes(ini_get("memory_limit")) < convertPHPSizeToBytes(Yii::app()->getConfig('memory_limit') . 'M')) {
@ini_set("memory_limit", Yii::app()->getConfig('memory_limit') . 'M');
// Set Memory Limit for big surveys
}
// The following function (when called) includes FireBug Lite if true
defined('FIREBUG') or define('FIREBUG', Yii::app()->getConfig('use_firebug_lite'));
//Every 50th time clean up the temp directory of old files (older than 1 day)
//depending on the load the probability might be set higher or lower
if (rand(1, 50) == 1) {
cleanTempDirectory();
}
//GlobalSettings Helper
Yii::import("application.helpers.globalsettings");
enforceSSLMode();
// This really should be at the top but for it to utilise getGlobalSetting() it has to be here
if (Yii::app()->getConfig('debug') == 1) {
//For debug purposes - switch on in config.php
@ini_set("display_errors", 1);
error_reporting(E_ALL);
} elseif (Yii::app()->getConfig('debug') == 2) {
//For debug purposes - switch on in config.php
@ini_set("display_errors", 1);
error_reporting(E_ALL | E_STRICT);
} else {
@ini_set("display_errors", 0);
error_reporting(0);
}
//SET LOCAL TIME
$timeadjust = Yii::app()->getConfig("timeadjust");
if (substr($timeadjust, 0, 1) != '-' && substr($timeadjust, 0, 1) != '+') {
$timeadjust = '+' . $timeadjust;
}
if (strpos($timeadjust, 'hours') === false && strpos($timeadjust, 'minutes') === false && strpos($timeadjust, 'days') === false) {
Yii::app()->setConfig("timeadjust", $timeadjust . ' hours');
}
//Yii::app()->setConfig('adminimageurl', Yii::app()->getConfig('styleurl').Yii::app()->getConfig('admintheme').'/images/');
//Yii::app()->setConfig('adminstyleurl', Yii::app()->getConfig('styleurl').Yii::app()->getConfig('admintheme').'/');
}
function getMaximumFileUploadSize()
{
// http://stackoverflow.com/questions/13076480/php-get-actual-maximum-upload-size
return min(convertPHPSizeToBytes(ini_get('post_max_size')), convertPHPSizeToBytes(ini_get('upload_max_filesize')));
}