/**
* check requirements
*
* @param array $data return theme variables
* @return bool requirements met
*/
private function _check_requirements(&$data)
{
// 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)
{
$label = array('wrong', 'right');
return sprintf('<img src="%s/installer/images/tick-%s.png" alt="Found" />', Yii::app()->baseUrl, $label[$result]);
}
function is_writable_recursive($dir)
{
$folder = opendir($dir);
while ($file = readdir($folder)) {
if ($file != '.' && $file != '..' && (!is_writable($dir . "/" . $file) || is_dir($dir . "/" . $file) && !is_writable_recursive($dir . "/" . $file))) {
closedir($folder);
return false;
}
}
closedir($folder);
return true;
}
/**
* check for a specific PHPFunction, return HTML image
*
* @param string $function
* @param string $image return
* @return bool result
*/
function check_PHPFunction($function, &$image)
{
$result = function_exists($function);
$image = check_HTML_image($result);
return $result;
}
/**
* 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, $type, &$data, $base, $keyError, $bRecursive = false)
{
$result = false;
$data[$base . 'Present'] = 'Not Found';
$data[$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) {
$data[$base . 'Present'] = 'Found';
if (!$bRecursive && is_writable($path) || $bRecursive && is_writable_recursive($path)) {
$data[$base . 'Writable'] = 'Writable';
$result = true;
} else {
$data[$base . 'Writable'] = 'Unwritable';
}
}
$result || ($data[$keyError] = true);
return $result;
}
/**
* 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, '5.1.6', '<')) {
$bProceed = !($data['verror'] = true);
}
// mbstring library check
if (!check_PHPFunction('mb_convert_encoding', $data['mbstringPresent'])) {
$bProceed = false;
}
// JSON library check
if (!check_PHPFunction('json_encode', $data['bJSONPresent'])) {
$bProceed = false;
}
// ** file and directory permissions checking **
// config directory
if (!check_DirectoryWriteable(Yii::app()->getConfig('rootdir') . '/application/config', $data, 'config', 'derror')) {
$bProceed = false;
}
// templates directory check
if (!check_DirectoryWriteable(Yii::app()->getConfig('tempdir') . '/', $data, 'tmpdir', 'tperror', true)) {
$bProceed = false;
}
//upload directory check
if (!check_DirectoryWriteable(Yii::app()->getConfig('uploaddir') . '/', $data, 'uploaddir', 'uerror', true)) {
$bProceed = false;
}
// Session writable check
$session = Yii::app()->session;
/* @var $session CHttpSession */
$sessionWritable = $session->get('saveCheck', null) === 'save';
$data['sessionWritable'] = $sessionWritable;
$data['sessionWritableImg'] = check_HTML_image($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')) {
$data['gdPresent'] = check_HTML_image(array_key_exists('FreeType Support', gd_info()));
} else {
$data['gdPresent'] = check_HTML_image(false);
}
// ldap library check
check_PHPFunction('ldap_connect', $data['ldapPresent']);
// php zip library check
check_PHPFunction('zip_open', $data['zipPresent']);
// zlib php library check
check_PHPFunction('zlib_get_coding_type', $data['zlibPresent']);
// imap php library check
check_PHPFunction('imap_open', $data['bIMAPPresent']);
return $bProceed;
}
/**
* 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
* @return string Span with check if $result is true; otherwise a span with warning
*/
function check_HTML_image($result)
{
if ($result) {
return "<span class='fa fa-check text-success' alt='right'></span>";
} else {
return "<span class='fa fa-exclamation-triangle text-danger' alt='wrong'></span>";
}
}
function is_writable_recursive($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;
}
