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<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
* Holds class PMA_Error_Handler
*
* @package PhpMyAdmin
*/
if (! defined('PHPMYADMIN')) {
exit;
}
/**
*
*/
require_once './libraries/Error.class.php';
/**
* handling errors
*
* @package PhpMyAdmin
*/
class PMA_Error_Handler
{
/**
* holds errors to be displayed or reported later ...
*
* @var array of PMA_Error
*/
protected $errors = array();
/**
* Constructor - set PHP error handler
*
*/
public function __construct()
{
/**
* Do not set ourselves as error handler in case of testsuite.
*
* This behavior is not tested there and breaks other tests as they
* rely on PHPUnit doing it's own error handling which we break here.
*/
if (!defined('TESTSUITE')) {
set_error_handler(array($this, 'handleError'));
}
}
/**
* Destructor
*
* stores errors in session
*
*/
public function __destruct()
{
if (isset($_SESSION)) {
if (! isset($_SESSION['errors'])) {
$_SESSION['errors'] = array();
}
if (isset($GLOBALS['cfg']['Error_Handler'])
&& $GLOBALS['cfg']['Error_Handler']['gather']
) {
// remember all errors
$_SESSION['errors'] = array_merge(
$_SESSION['errors'],
$this->errors
);
} else {
// remember only not displayed errors
foreach ($this->errors as $key => $error) {
/**
* We don't want to store all errors here as it would
* explode user session. In case you want them all set
* $GLOBALS['cfg']['Error_Handler']['gather'] to true
*/
if (count($_SESSION['errors']) >= 20) {
$error = new PMA_Error(
0,
__('Too many error messages, some are not displayed.'),
__FILE__,
__LINE__
);
$_SESSION['errors'][$error->getHash()] = $error;
break;
} else if (($error instanceof PMA_Error)
&& ! $error->isDisplayed()
) {
$_SESSION['errors'][$key] = $error;
}
}
}
}
}
/**
* returns array with all errors
*
* @return array PMA_Error_Handler::$_errors
*/
protected function getErrors()
{
$this->checkSavedErrors();
return $this->errors;
}
/**
* Error handler - called when errors are triggered/occured
*
* This calls the addError() function, escaping the error string
*
* @param integer $errno error number
* @param string $errstr error string
* @param string $errfile error file
* @param integer $errline error line
*
* @return void
*/
public function handleError($errno, $errstr, $errfile, $errline)
{
$this->addError($errstr, $errno, $errfile, $errline, true);
}
/**
* Add an error; can also be called directly (with or without escaping)
*
* The following error types cannot be handled with a user defined function:
* E_ERROR, E_PARSE, E_CORE_ERROR, E_CORE_WARNING, E_COMPILE_ERROR,
* E_COMPILE_WARNING,
* and most of E_STRICT raised in the file where set_error_handler() is called.
*
* Do not use the context parameter as we want to avoid storing the
* complete $GLOBALS inside $_SESSION['errors']
*
* @param string $errstr error string
* @param integer $errno error number
* @param string $errfile error file
* @param integer $errline error line
* @param boolean $escape whether to escape the error string
*
* @return void
*/
public function addError($errstr, $errno, $errfile, $errline, $escape = true)
{
if ($escape) {
$errstr = htmlspecialchars($errstr);
}
// create error object
$error = new PMA_Error(
$errno,
$errstr,
$errfile,
$errline
);
// do not repeat errors
$this->errors[$error->getHash()] = $error;
switch ($error->getNumber()) {
case E_USER_NOTICE:
case E_USER_WARNING:
case E_STRICT:
case E_DEPRECATED:
case E_NOTICE:
case E_WARNING:
case E_CORE_WARNING:
case E_COMPILE_WARNING:
case E_USER_ERROR:
case E_RECOVERABLE_ERROR:
// just collect the error
// display is called from outside
break;
case E_ERROR:
case E_PARSE:
case E_CORE_ERROR:
case E_COMPILE_ERROR:
default:
// FATAL error, dislay it and exit
$this->dispFatalError($error);
exit;
break;
}
}
/**
* log error to configured log facility
*
* @param PMA_Error $error the error
*
* @return bool
*
* @todo finish!
*/
protected function logError($error)
{
return error_log($error->getMessage());
}
/**
* trigger a custom error
*
* @param string $errorInfo error message
* @param integer $errorNumber error number
* @param string $file file name
* @param integer $line line number
*
* @return void
*/
public function triggerError($errorInfo, $errorNumber = null,
$file = null, $line = null
) {
// we could also extract file and line from backtrace
// and call handleError() directly
trigger_error($errorInfo, $errorNumber);
}
/**
* display fatal error and exit
*
* @param PMA_Error $error the error
*
* @return void
*/
protected function dispFatalError($error)
{
if (! headers_sent()) {
$this->dispPageStart($error);
}
$error->display();
$this->dispPageEnd();
exit;
}
/**
* display the whole error page with all errors
*
* @return void
*/
public function dispErrorPage()
{
if (! headers_sent()) {
$this->dispPageStart();
}
$this->dispAllErrors();
$this->dispPageEnd();
}
/**
* Displays user errors not displayed
*
* @return void
*/
public function dispUserErrors()
{
echo $this->getDispUserErrors();
}
/**
* Renders user errors not displayed
*
* @return string
*/
public function getDispUserErrors()
{
$retval = '';
foreach ($this->getErrors() as $error) {
if ($error->isUserError() && ! $error->isDisplayed()) {
$retval .= $error->getDisplay();
}
}
return $retval;
}
/**
* display HTML header
*
* @param PMA_error $error the error
*
* @return void
*/
protected function dispPageStart($error = null)
{
PMA_Response::getInstance()->disable();
echo '<html><head><title>';
if ($error) {
echo $error->getTitle();
} else {
echo 'phpMyAdmin error reporting page';
}
echo '</title></head>';
}
/**
* display HTML footer
*
* @return void
*/
protected function dispPageEnd()
{
echo '</body></html>';
}
/**
* display all errors regardless already displayed or user errors
*
* @return void
*/
public function dispAllErrors()
{
foreach ($this->getErrors() as $error) {
$error->display();
}
}
/**
* renders errors not displayed
*
* @return void
*/
public function getDispErrors()
{
$retval = '';
if ($GLOBALS['cfg']['Error_Handler']['display']) {
foreach ($this->getErrors() as $error) {
if ($error instanceof PMA_Error) {
if (! $error->isDisplayed()) {
$retval .= $error->getDisplay();
}
} else {
ob_start();
var_dump($error);
$retval .= ob_get_contents();
ob_end_clean();
}
}
} else {
$retval .= $this->getDispUserErrors();
}
return $retval;
}
/**
* displays errors not displayed
*
* @return void
*/
public function dispErrors()
{
echo $this->getDispErrors();
}
/**
* look in session for saved errors
*
* @return void
*/
protected function checkSavedErrors()
{
if (isset($_SESSION['errors'])) {
// restore saved errors
foreach ($_SESSION['errors'] as $hash => $error) {
if ($error instanceof PMA_Error && ! isset($this->errors[$hash])) {
$this->errors[$hash] = $error;
}
}
//$this->errors = array_merge($_SESSION['errors'], $this->errors);
// delete stored errors
$_SESSION['errors'] = array();
unset($_SESSION['errors']);
}
}
/**
* return count of errors
*
* @return integer number of errors occoured
*/
public function countErrors()
{
return count($this->getErrors());
}
/**
* return count of user errors
*
* @return integer number of user errors occoured
*/
public function countUserErrors()
{
$count = 0;
if ($this->countErrors()) {
foreach ($this->getErrors() as $error) {
if ($error->isUserError()) {
$count++;
}
}
}
return $count;
}
/**
* whether use errors occured or not
*
* @return boolean
*/
public function hasUserErrors()
{
return (bool) $this->countUserErrors();
}
/**
* whether errors occured or not
*
* @return boolean
*/
public function hasErrors()
{
return (bool) $this->countErrors();
}
/**
* number of errors to be displayed
*
* @return integer number of errors to be displayed
*/
public function countDisplayErrors()
{
if ($GLOBALS['cfg']['Error_Handler']['display']) {
return $this->countErrors();
} else {
return $this->countUserErrors();
}
}
/**
* whether there are errors to display or not
*
* @return boolean
*/
public function hasDisplayErrors()
{
return (bool) $this->countDisplayErrors();
}
}
?>