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admin/phpMyAdmin/libraries/classes/ErrorHandler.php
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597
admin/phpMyAdmin/libraries/classes/ErrorHandler.php
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@ -0,0 +1,597 @@
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<?php
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declare(strict_types=1);
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namespace PhpMyAdmin;
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use const E_COMPILE_ERROR;
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use const E_COMPILE_WARNING;
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use const E_CORE_ERROR;
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use const E_CORE_WARNING;
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use const E_DEPRECATED;
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use const E_ERROR;
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use const E_NOTICE;
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use const E_PARSE;
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use const E_RECOVERABLE_ERROR;
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use const E_STRICT;
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use const E_USER_DEPRECATED;
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use const E_USER_ERROR;
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use const E_USER_NOTICE;
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use const E_USER_WARNING;
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use const E_WARNING;
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use function array_splice;
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use function count;
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use function defined;
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use function error_reporting;
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use function headers_sent;
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use function htmlspecialchars;
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use function set_error_handler;
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use function trigger_error;
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use const PHP_VERSION_ID;
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/**
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* handling errors
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*/
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class ErrorHandler
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{
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/**
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* holds errors to be displayed or reported later ...
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*
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* @var Error[]
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*/
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protected $errors = [];
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/**
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* Hide location of errors
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*
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* @var bool
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*/
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protected $hideLocation = false;
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/**
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* Initial error reporting state
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*
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* @var int
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*/
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protected $errorReporting = 0;
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public function __construct()
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{
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/**
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* Do not set ourselves as error handler in case of testsuite.
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*
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* This behavior is not tested there and breaks other tests as they
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* rely on PHPUnit doing it's own error handling which we break here.
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*/
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if (! defined('TESTSUITE')) {
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set_error_handler([$this, 'handleError']);
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}
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if (! Util::isErrorReportingAvailable()) {
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return;
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}
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$this->errorReporting = error_reporting();
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}
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/**
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* Destructor
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*
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* stores errors in session
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*/
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public function __destruct()
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{
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if (! isset($_SESSION['errors'])) {
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$_SESSION['errors'] = [];
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}
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// remember only not displayed errors
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foreach ($this->errors as $key => $error) {
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/**
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* We don't want to store all errors here as it would
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* explode user session.
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*/
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if (count($_SESSION['errors']) >= 10) {
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$error = new Error(
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0,
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__('Too many error messages, some are not displayed.'),
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__FILE__,
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__LINE__
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);
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$_SESSION['errors'][$error->getHash()] = $error;
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break;
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}
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if ((! ($error instanceof Error))
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|| $error->isDisplayed()
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) {
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continue;
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}
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$_SESSION['errors'][$key] = $error;
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}
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}
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/**
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* Toggles location hiding
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*
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* @param bool $hide Whether to hide
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*/
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public function setHideLocation(bool $hide): void
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{
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$this->hideLocation = $hide;
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}
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/**
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* returns array with all errors
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*
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* @param bool $check Whether to check for session errors
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*
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* @return Error[]
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*/
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public function getErrors(bool $check = true): array
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{
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if ($check) {
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$this->checkSavedErrors();
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}
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return $this->errors;
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}
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/**
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* returns the errors occurred in the current run only.
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* Does not include the errors saved in the SESSION
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*
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* @return Error[]
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*/
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public function getCurrentErrors(): array
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{
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return $this->errors;
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}
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/**
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* Pops recent errors from the storage
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*
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* @param int $count Old error count
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*
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* @return Error[]
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*/
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public function sliceErrors(int $count): array
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{
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$errors = $this->getErrors(false);
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$this->errors = array_splice($errors, 0, $count);
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return array_splice($errors, $count);
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}
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/**
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* Error handler - called when errors are triggered/occurred
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*
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* This calls the addError() function, escaping the error string
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* Ignores the errors wherever Error Control Operator (@) is used.
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*
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* @param int $errno error number
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* @param string $errstr error string
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* @param string $errfile error file
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* @param int $errline error line
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*/
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public function handleError(
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int $errno,
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string $errstr,
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string $errfile,
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int $errline
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): void {
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if (Util::isErrorReportingAvailable()) {
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/**
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* Check if Error Control Operator (@) was used, but still show
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* user errors even in this case.
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* See: https://github.com/phpmyadmin/phpmyadmin/issues/16729
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*/
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$isSilenced = ! (error_reporting() & $errno);
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if (PHP_VERSION_ID < 80000) {
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$isSilenced = error_reporting() == 0;
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}
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if ($isSilenced &&
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$this->errorReporting != 0 &&
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($errno & (E_USER_WARNING | E_USER_ERROR | E_USER_NOTICE | E_USER_DEPRECATED)) == 0
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) {
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return;
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}
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} else {
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if (($errno & (E_USER_WARNING | E_USER_ERROR | E_USER_NOTICE | E_USER_DEPRECATED)) == 0) {
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return;
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}
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}
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$this->addError($errstr, $errno, $errfile, $errline, true);
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}
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/**
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* Add an error; can also be called directly (with or without escaping)
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*
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* The following error types cannot be handled with a user defined function:
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* E_ERROR, E_PARSE, E_CORE_ERROR, E_CORE_WARNING, E_COMPILE_ERROR,
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* E_COMPILE_WARNING,
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* and most of E_STRICT raised in the file where set_error_handler() is called.
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*
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* Do not use the context parameter as we want to avoid storing the
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* complete $GLOBALS inside $_SESSION['errors']
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*
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* @param string $errstr error string
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* @param int $errno error number
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* @param string $errfile error file
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* @param int $errline error line
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* @param bool $escape whether to escape the error string
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*/
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public function addError(
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string $errstr,
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int $errno,
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string $errfile,
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int $errline,
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bool $escape = true
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): void {
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if ($escape) {
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$errstr = htmlspecialchars($errstr);
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}
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// create error object
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$error = new Error(
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$errno,
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$errstr,
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$errfile,
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$errline
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);
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$error->setHideLocation($this->hideLocation);
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// do not repeat errors
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$this->errors[$error->getHash()] = $error;
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switch ($error->getNumber()) {
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case E_STRICT:
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case E_DEPRECATED:
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case E_NOTICE:
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case E_WARNING:
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case E_CORE_WARNING:
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case E_COMPILE_WARNING:
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case E_RECOVERABLE_ERROR:
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/* Avoid rendering BB code in PHP errors */
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$error->setBBCode(false);
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break;
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case E_USER_NOTICE:
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case E_USER_WARNING:
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case E_USER_ERROR:
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case E_USER_DEPRECATED:
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// just collect the error
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// display is called from outside
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break;
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case E_ERROR:
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case E_PARSE:
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case E_CORE_ERROR:
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case E_COMPILE_ERROR:
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default:
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// FATAL error, display it and exit
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$this->dispFatalError($error);
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exit;
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}
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}
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/**
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* trigger a custom error
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*
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* @param string $errorInfo error message
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* @param int $errorNumber error number
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*/
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public function triggerError(string $errorInfo, ?int $errorNumber = null): void
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{
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// we could also extract file and line from backtrace
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// and call handleError() directly
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trigger_error($errorInfo, $errorNumber);
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}
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/**
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* display fatal error and exit
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*
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* @param Error $error the error
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*/
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protected function dispFatalError(Error $error): void
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{
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if (! headers_sent()) {
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$this->dispPageStart($error);
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}
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echo $error->getDisplay();
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$this->dispPageEnd();
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exit;
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}
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/**
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* Displays user errors not displayed
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*/
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public function dispUserErrors(): void
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{
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echo $this->getDispUserErrors();
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}
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/**
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* Renders user errors not displayed
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*/
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public function getDispUserErrors(): string
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{
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$retval = '';
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foreach ($this->getErrors() as $error) {
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if (! $error->isUserError() || $error->isDisplayed()) {
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continue;
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}
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$retval .= $error->getDisplay();
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}
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return $retval;
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}
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/**
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* display HTML header
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*
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* @param Error $error the error
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*/
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protected function dispPageStart(?Error $error = null): void
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{
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Response::getInstance()->disable();
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echo '<html><head><title>';
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if ($error) {
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echo $error->getTitle();
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} else {
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echo 'phpMyAdmin error reporting page';
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}
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echo '</title></head>';
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}
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/**
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* display HTML footer
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*/
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protected function dispPageEnd(): void
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{
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echo '</body></html>';
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}
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/**
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* renders errors not displayed
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*/
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public function getDispErrors(): string
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{
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$retval = '';
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// display errors if SendErrorReports is set to 'ask'.
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if ($GLOBALS['cfg']['SendErrorReports'] !== 'never') {
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foreach ($this->getErrors() as $error) {
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if ($error->isDisplayed()) {
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continue;
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}
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$retval .= $error->getDisplay();
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}
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} else {
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$retval .= $this->getDispUserErrors();
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}
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// if preference is not 'never' and
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// there are 'actual' errors to be reported
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if ($GLOBALS['cfg']['SendErrorReports'] !== 'never'
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&& $this->countErrors() != $this->countUserErrors()
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) {
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// add report button.
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$retval .= '<form method="post" action="' . Url::getFromRoute('/error-report')
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. '" id="pma_report_errors_form"';
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if ($GLOBALS['cfg']['SendErrorReports'] === 'always') {
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// in case of 'always', generate 'invisible' form.
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$retval .= ' class="hide"';
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}
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$retval .= '>';
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$retval .= Url::getHiddenFields([
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'exception_type' => 'php',
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'send_error_report' => '1',
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'server' => $GLOBALS['server'],
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]);
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$retval .= '<input type="submit" value="'
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. __('Report')
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. '" id="pma_report_errors" class="btn btn-primary floatright">'
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. '<input type="checkbox" name="always_send"'
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. ' id="always_send_checkbox" value="true">'
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. '<label for="always_send_checkbox">'
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. __('Automatically send report next time')
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. '</label>';
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if ($GLOBALS['cfg']['SendErrorReports'] === 'ask') {
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// add ignore buttons
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$retval .= '<input type="submit" value="'
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. __('Ignore')
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. '" id="pma_ignore_errors_bottom" class="btn btn-secondary floatright">';
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}
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$retval .= '<input type="submit" value="'
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. __('Ignore All')
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. '" id="pma_ignore_all_errors_bottom" class="btn btn-secondary floatright">';
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$retval .= '</form>';
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}
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return $retval;
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}
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/**
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* look in session for saved errors
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*/
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protected function checkSavedErrors(): void
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{
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if (! isset($_SESSION['errors'])) {
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return;
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}
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// restore saved errors
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foreach ($_SESSION['errors'] as $hash => $error) {
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if (! ($error instanceof Error) || isset($this->errors[$hash])) {
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continue;
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}
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$this->errors[$hash] = $error;
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}
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// delete stored errors
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$_SESSION['errors'] = [];
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unset($_SESSION['errors']);
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}
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/**
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* return count of errors
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*
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* @param bool $check Whether to check for session errors
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*
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* @return int number of errors occurred
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*/
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public function countErrors(bool $check = true): int
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{
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return count($this->getErrors($check));
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}
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|
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/**
|
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* return count of user errors
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*
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* @return int number of user errors occurred
|
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*/
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public function countUserErrors(): int
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{
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$count = 0;
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if ($this->countErrors()) {
|
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foreach ($this->getErrors() as $error) {
|
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if (! $error->isUserError()) {
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continue;
|
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}
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|
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$count++;
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}
|
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}
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|
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return $count;
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}
|
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|
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/**
|
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* whether use errors occurred or not
|
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*/
|
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public function hasUserErrors(): bool
|
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{
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return (bool) $this->countUserErrors();
|
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}
|
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|
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/**
|
||||
* whether errors occurred or not
|
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*/
|
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public function hasErrors(): bool
|
||||
{
|
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return (bool) $this->countErrors();
|
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}
|
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|
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/**
|
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* number of errors to be displayed
|
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*
|
||||
* @return int number of errors to be displayed
|
||||
*/
|
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public function countDisplayErrors(): int
|
||||
{
|
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if ($GLOBALS['cfg']['SendErrorReports'] !== 'never') {
|
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return $this->countErrors();
|
||||
}
|
||||
|
||||
return $this->countUserErrors();
|
||||
}
|
||||
|
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/**
|
||||
* whether there are errors to display or not
|
||||
*/
|
||||
public function hasDisplayErrors(): bool
|
||||
{
|
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return (bool) $this->countDisplayErrors();
|
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}
|
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|
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/**
|
||||
* Deletes previously stored errors in SESSION.
|
||||
* Saves current errors in session as previous errors.
|
||||
* Required to save current errors in case 'ask'
|
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*/
|
||||
public function savePreviousErrors(): void
|
||||
{
|
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unset($_SESSION['prev_errors']);
|
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$_SESSION['prev_errors'] = $GLOBALS['error_handler']->getCurrentErrors();
|
||||
}
|
||||
|
||||
/**
|
||||
* Function to check if there are any errors to be prompted.
|
||||
* Needed because user warnings raised are
|
||||
* also collected by global error handler.
|
||||
* This distinguishes between the actual errors
|
||||
* and user errors raised to warn user.
|
||||
*
|
||||
* @return bool true if there are errors to be "prompted", false otherwise
|
||||
*/
|
||||
public function hasErrorsForPrompt(): bool
|
||||
{
|
||||
return $GLOBALS['cfg']['SendErrorReports'] !== 'never'
|
||||
&& $this->countErrors() != $this->countUserErrors();
|
||||
}
|
||||
|
||||
/**
|
||||
* Function to report all the collected php errors.
|
||||
* Must be called at the end of each script
|
||||
* by the $GLOBALS['error_handler'] only.
|
||||
*/
|
||||
public function reportErrors(): void
|
||||
{
|
||||
// if there're no actual errors,
|
||||
if (! $this->hasErrors()
|
||||
|| $this->countErrors() == $this->countUserErrors()
|
||||
) {
|
||||
// then simply return.
|
||||
return;
|
||||
}
|
||||
// Delete all the prev_errors in session & store new prev_errors in session
|
||||
$this->savePreviousErrors();
|
||||
$response = Response::getInstance();
|
||||
$jsCode = '';
|
||||
if ($GLOBALS['cfg']['SendErrorReports'] === 'always') {
|
||||
if ($response->isAjax()) {
|
||||
// set flag for automatic report submission.
|
||||
$response->addJSON('sendErrorAlways', '1');
|
||||
} else {
|
||||
// send the error reports asynchronously & without asking user
|
||||
$jsCode .= '$("#pma_report_errors_form").submit();'
|
||||
. 'Functions.ajaxShowMessage(
|
||||
Messages.phpErrorsBeingSubmitted, false
|
||||
);';
|
||||
// js code to appropriate focusing,
|
||||
$jsCode .= '$("html, body").animate({
|
||||
scrollTop:$(document).height()
|
||||
}, "slow");';
|
||||
}
|
||||
} elseif ($GLOBALS['cfg']['SendErrorReports'] === 'ask') {
|
||||
//ask user whether to submit errors or not.
|
||||
if (! $response->isAjax()) {
|
||||
// js code to show appropriate msgs, event binding & focusing.
|
||||
$jsCode = 'Functions.ajaxShowMessage(Messages.phpErrorsFound);'
|
||||
. '$("#pma_ignore_errors_popup").on("click", function() {
|
||||
Functions.ignorePhpErrors()
|
||||
});'
|
||||
. '$("#pma_ignore_all_errors_popup").on("click",
|
||||
function() {
|
||||
Functions.ignorePhpErrors(false)
|
||||
});'
|
||||
. '$("#pma_ignore_errors_bottom").on("click", function(e) {
|
||||
e.preventDefault();
|
||||
Functions.ignorePhpErrors()
|
||||
});'
|
||||
. '$("#pma_ignore_all_errors_bottom").on("click",
|
||||
function(e) {
|
||||
e.preventDefault();
|
||||
Functions.ignorePhpErrors(false)
|
||||
});'
|
||||
. '$("html, body").animate({
|
||||
scrollTop:$(document).height()
|
||||
}, "slow");';
|
||||
}
|
||||
}
|
||||
// The errors are already sent from the response.
|
||||
// Just focus on errors division upon load event.
|
||||
$response->getFooter()->getScripts()->addCode($jsCode);
|
||||
}
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue