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<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
 * Holds class PMA\libraries\ErrorHandler
 *
 * @package PhpMyAdmin
 */
namespace PMA\libraries;

use PMA\libraries\Error;

/**
 * handling errors
 *
 * @package PhpMyAdmin
 */
class ErrorHandler
{
    /**
     * holds errors to be displayed or reported later ...
     *
     * @var Error[]
     */
    protected $errors = array();

    /**
     * Hide location of errors
     */
    protected $hide_location = false;

    /**
     * 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();
            }

            // remember only not displayed errors
            foreach ($this->errors as $key => $error) {
                /**
                 * We don't want to store all errors here as it would
                 * explode user session.
                 */
                if (count($_SESSION['errors']) >= 10) {
                    $error = new Error(
                        0,
                        __('Too many error messages, some are not displayed.'),
                        __FILE__,
                        __LINE__
                    );
                    $_SESSION['errors'][$error->getHash()] = $error;
                    break;
                } else if (($error instanceof Error)
                    && ! $error->isDisplayed()
                ) {
                    $_SESSION['errors'][$key] = $error;
                }
            }
        }
    }

    /**
     * Toggles location hiding
     *
     * @param boolean $hide Whether to hide
     *
     * @return void
     */
    public function setHideLocation($hide)
    {
        $this->hide_location = $hide;
    }

    /**
     * returns array with all errors
     *
     * @param $check bool Whether to check for session errors
     *
     * @return Error[]
     */
    public function getErrors($check=true)
    {
        if ($check) {
            $this->checkSavedErrors();
        }
        return $this->errors;
    }

    /**
    * returns the errors occurred in the current run only.
    * Does not include the errors save din the SESSION
    *
    * @return Error[]
    */
    public function getCurrentErrors()
    {
        return $this->errors;
    }

    /**
     * Pops recent erros from the storage
     *
     * @param int $count Old error count
     *
     * @return Error[]
     */
    public function sliceErrors($count)
    {
        $errors = $this->getErrors(false);
        $this->errors = array_splice($errors, 0, $count);
        return array_splice($errors, $count);
    }

    /**
     * Error handler - called when errors are triggered/occurred
     *
     * This calls the addError() function, escaping the error string
     * Ignores the errors wherever Error Control Operator (@) is used.
     *
     * @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)
    {
        // check if Error Control Operator (@) was used.
        if (error_reporting() == 0) {
            return;
        }
        $this->addError($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 Error(
            $errno,
            $errstr,
            $errfile,
            $errline
        );
        $error->setHideLocation($this->hide_location);

        // do not repeat errors
        $this->errors[$error->getHash()] = $error;

        switch ($error->getNumber()) {
        case E_STRICT:
        case E_DEPRECATED:
        case E_NOTICE:
        case E_WARNING:
        case E_CORE_WARNING:
        case E_COMPILE_WARNING:
        case E_RECOVERABLE_ERROR:
            /* Avoid rendering BB code in PHP errors */
            $error->setBBCode(false);
            break;
        case E_USER_NOTICE:
        case E_USER_WARNING:
        case E_USER_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, display it and exit
            $this->dispFatalError($error);
            exit;
        }
    }

    /**
     * trigger a custom error
     *
     * @param string  $errorInfo   error message
     * @param integer $errorNumber error number
     *
     * @return void
     */
    public function triggerError($errorInfo, $errorNumber = null)
    {
        // we could also extract file and line from backtrace
        // and call handleError() directly
        trigger_error($errorInfo, $errorNumber);
    }

    /**
     * display fatal error and exit
     *
     * @param Error $error the error
     *
     * @return void
     */
    protected function dispFatalError($error)
    {
        if (! headers_sent()) {
            $this->dispPageStart($error);
        }
        $error->display();
        $this->dispPageEnd();
        exit;
    }

    /**
     * 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 Error $error the error
     *
     * @return void
     */
    protected function dispPageStart($error = null)
    {
        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>';
    }

    /**
     * renders errors not displayed
     *
     * @return string
     */
    public function getDispErrors()
    {
        // Not sure why but seen in reports.phpmyadmin.net
        if (empty($GLOBALS['cfg']['SendErrorReports'])) {
            $GLOBALS['cfg']['SendErrorReports'] = 'ask';
        }
        $retval = '';
        // display errors if SendErrorReports is set to 'ask'.
        if ($GLOBALS['cfg']['SendErrorReports'] != 'never') {
            foreach ($this->getErrors() as $error) {
                if ($error instanceof Error) {
                    if (! $error->isDisplayed()) {
                        $retval .= $error->getDisplay();
                    }
                } else {
                    $retval .= var_export($error, true);
                }
            }
        } else {
            $retval .= $this->getDispUserErrors();
        }
        // if preference is not 'never' and
        // there are 'actual' errors to be reported
        if ($GLOBALS['cfg']['SendErrorReports'] != 'never'
            &&  $this->countErrors() !=  $this->countUserErrors()
        ) {
            // add report button.
            $retval .= '<form method="post" action="error_report.php"'
                    . ' id="pma_report_errors_form"';
            if ($GLOBALS['cfg']['SendErrorReports'] == 'always') {
                // in case of 'always', generate 'invisible' form.
                $retval .= ' style="display:none;"';
            }
            $retval .=  '>'
                    . '<input type="hidden" name="token" value="'
                    . $_SESSION[' PMA_token ']
                    . '"/>'
                    . '<input type="hidden" name="exception_type" value="php"/>'
                    . '<input type="hidden" name="send_error_report" value="1" />'
                    . '<input type="submit" value="'
                    . __('Report')
                    . '" id="pma_report_errors" class="floatright">'
                    . '<input type="checkbox" name="always_send"'
                    . ' id="always_send_checkbox" value="true"/>'
                    . '<label for="always_send_checkbox">'
                    . __('Automatically send report next time')
                    . '</label>';

            if ($GLOBALS['cfg']['SendErrorReports'] == 'ask') {
                // add ignore buttons
                $retval .= '<input type="submit" value="'
                        . __('Ignore')
                        . '" id="pma_ignore_errors_bottom" class="floatright">';
            }
            $retval .= '<input type="submit" value="'
                    . __('Ignore All')
                    . '" id="pma_ignore_all_errors_bottom" class="floatright">';
            $retval .= '</form>';
        }
        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 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
     *
     * @param $check bool Whether to check for session errors
     *
     * @return integer number of errors occurred
     */
    public function countErrors($check=true)
    {
        return count($this->getErrors($check));
    }

    /**
     * return count of user errors
     *
     * @return integer number of user errors occurred
     */
    public function countUserErrors()
    {
        $count = 0;
        if ($this->countErrors()) {
            foreach ($this->getErrors() as $error) {
                if ($error->isUserError()) {
                    $count++;
                }
            }
        }

        return $count;
    }

    /**
     * whether use errors occurred or not
     *
     * @return boolean
     */
    public function hasUserErrors()
    {
        return (bool) $this->countUserErrors();
    }

    /**
     * whether errors occurred 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']['SendErrorReports'] != 'never') {
            return $this->countErrors();
        } else {
            return $this->countUserErrors();
        }
    }

    /**
     * whether there are errors to display or not
     *
     * @return boolean
     */
    public function hasDisplayErrors()
    {
        return (bool) $this->countDisplayErrors();
    }

    /**
    * Deletes previously stored errors in SESSION.
    * Saves current errors in session as previous errors.
    * Required to save current errors in case  'ask'
    *
    * @return void
    */
    public function savePreviousErrors()
    {
        unset($_SESSION['prev_errors']);
        $_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 boolean true if there are errors to be "prompted", false otherwise
     */
    public function hasErrorsForPrompt()
    {
        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 $GLOBALS['error_handler'] only.
     *
     * @return void
     */
    public function reportErrors()
    {
        // if there're no actual errors,
        if (!$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();'
                        . 'PMA_ajaxShowMessage(
                            PMA_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.
                $jsCode = 'PMA_ajaxShowMessage(PMA_messages["phpErrorsFound"]);'
                        . '$("#pma_ignore_errors_popup").bind("click", function() {
                            PMA_ignorePhpErrors()
                        });'
                        . '$("#pma_ignore_all_errors_popup").bind("click",
                            function() {
                                PMA_ignorePhpErrors(false)
                            });'
                        . '$("#pma_ignore_errors_bottom").bind("click", function(e) {
                            e.preventDefaulut();
                            PMA_ignorePhpErrors()
                        });'
                        . '$("#pma_ignore_all_errors_bottom").bind("click",
                            function(e) {
                                e.preventDefault();
                                PMA_ignorePhpErrors(false)
                            });'
                        . '$("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);
    }
}

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Name Type Size Permission Actions
bfShapeFiles Folder 0755
config Folder 0755
controllers Folder 0755
dbi Folder 0755
di Folder 0755
engines Folder 0755
gis Folder 0755
navigation Folder 0755
plugins Folder 0755
properties Folder 0755
rte Folder 0755
sql-parser Folder 0755
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Config.php File 54.7 KB 0644
Console.php File 14.82 KB 0644
DatabaseInterface.php File 95.6 KB 0644
DbList.php File 1.9 KB 0644
DbQbe.php File 68.87 KB 0644
DbSearch.php File 17.21 KB 0644
DisplayResults.php File 206 KB 0644
Error.php File 12.7 KB 0644
ErrorHandler.php File 16.48 KB 0644
File.php File 18.82 KB 0644
Font.php File 4.24 KB 0644
Footer.php File 10.52 KB 0644
Header.php File 25.34 KB 0644
Index.php File 23.79 KB 0644
IndexColumn.php File 4.46 KB 0644
Language.php File 4.27 KB 0644
LanguageManager.php File 20.75 KB 0644
Linter.php File 5.02 KB 0644
ListAbstract.php File 3.15 KB 0644
ListDatabase.php File 4.62 KB 0644
Menu.php File 21.14 KB 0644
Message.php File 18.67 KB 0644
OutputBuffering.php File 3.59 KB 0644
PDF.php File 3.94 KB 0644
Partition.php File 7.26 KB 0644
Psr4Autoloader.php File 4.85 KB 0644
RecentFavoriteTable.php File 11.78 KB 0644
Response.php File 12.61 KB 0644
SavedSearches.php File 11.67 KB 0644
Scripts.php File 7.38 KB 0644
ServerStatusData.php File 15.72 KB 0644
StorageEngine.php File 13.61 KB 0644
SubPartition.php File 3.52 KB 0644
SysInfo.php File 799 B 0644
SysInfoLinux.php File 1.92 KB 0644
SysInfoSunOS.php File 1.86 KB 0644
SysInfoWINNT.php File 3.08 KB 0644
SystemDatabase.php File 3.66 KB 0644
Table.php File 88.12 KB 0644
Template.php File 4.45 KB 0644
Theme.php File 11.34 KB 0644
ThemeManager.php File 12.91 KB 0644
Tracker.php File 30.35 KB 0644
Types.php File 6.08 KB 0644
TypesMySQL.php File 17.26 KB 0644
Util.php File 172.46 KB 0644
VersionInformation.php File 7.87 KB 0644
ZipFile.php File 6.63 KB 0644
advisor.lib.php File 1.6 KB 0644
advisory_rules.txt File 25.94 KB 0644
autoloader.php File 450 B 0644
bookmark.lib.php File 8.5 KB 0644
browse_foreigners.lib.php File 9.83 KB 0644
central_columns.lib.php File 49.38 KB 0644
charset_conversion.lib.php File 3.54 KB 0644
check_user_privileges.lib.php File 10.65 KB 0644
cleanup.lib.php File 1.29 KB 0644
common.inc.php File 34.38 KB 0644
config.default.php File 66.5 KB 0644
config.values.php File 10.17 KB 0644
core.lib.php File 29.94 KB 0644
create_addfield.lib.php File 15.68 KB 0644
database_interface.inc.php File 2.63 KB 0644
db_common.inc.php File 3.12 KB 0644
db_designer.lib.php File 10.4 KB 0644
db_table_exists.lib.php File 3.21 KB 0644
display_change_password.lib.php File 5.45 KB 0644
display_create_table.lib.php File 1.53 KB 0644
display_export.lib.php File 38.11 KB 0644
display_git_revision.lib.php File 3.04 KB 0644
display_import.lib.php File 24.34 KB 0644
display_import_ajax.lib.php File 3.13 KB 0644
display_select_lang.lib.php File 2.36 KB 0644
error.inc.php File 1.21 KB 0644
error_report.lib.php File 10.25 KB 0644
export.lib.php File 35.16 KB 0644
file_listing.lib.php File 2.37 KB 0644
iconv_wrapper.lib.php File 3.88 KB 0644
import.lib.php File 50.64 KB 0644
index.lib.php File 1.37 KB 0644
information_schema_relations.lib.php File 10.95 KB 0644
insert_edit.lib.php File 112.79 KB 0644
ip_allow_deny.lib.php File 9.35 KB 0644
js_escape.lib.php File 4.43 KB 0644
kanji-encoding.lib.php File 4.46 KB 0644
language_stats.inc.php File 1.45 KB 0644
logging.lib.php File 521 B 0644
mime.lib.php File 704 B 0644
mult_submits.inc.php File 10.64 KB 0644
mult_submits.lib.php File 20.44 KB 0644
mysql_charsets.inc.php File 4.09 KB 0644
mysql_charsets.lib.php File 10.47 KB 0644
mysql_relations.lib.php File 5.12 KB 0644
normalization.lib.php File 33.98 KB 0644
opendocument.lib.php File 7.94 KB 0644
operations.lib.php File 73.64 KB 0644
parse_analyze.lib.php File 2.12 KB 0644
plugin_interface.lib.php File 19.69 KB 0644
plugin_interface.lib.php.bak File 19.69 KB 0644
pmd_common.php File 24.2 KB 0644
relation.lib.php File 68.41 KB 0644
relation_cleanup.lib.php File 13.84 KB 0644
replication.inc.php File 8.82 KB 0644
replication_gui.lib.php File 37.45 KB 0644
sanitizing.lib.php File 6.3 KB 0644
select_server.lib.php File 3.4 KB 0644
server_common.inc.php File 1.22 KB 0644
server_common.lib.php File 1.92 KB 0644
server_privileges.lib.php File 179.22 KB 0644
server_status.lib.php File 9.92 KB 0644
server_status_advisor.lib.php File 1.89 KB 0644
server_status_monitor.lib.php File 26.22 KB 0644
server_status_processes.lib.php File 9.57 KB 0644
server_status_queries.lib.php File 4.86 KB 0644
server_status_variables.lib.php File 28.95 KB 0644
server_user_groups.lib.php File 12.8 KB 0644
server_users.lib.php File 1.35 KB 0644
session.inc.php File 5.22 KB 0644
session.lib.php File 735 B 0644
special_schema_links.lib.php File 17.51 KB 0644
sql.lib.php File 77.51 KB 0644
sql.lib.php.bak File 77.51 KB 0644
sql_query_form.lib.php File 15.71 KB 0644
string.lib.php File 800 B 0644
stringMb.lib.php File 1.86 KB 0644
stringNative.lib.php File 6.82 KB 0644
sysinfo.lib.php File 1.34 KB 0644
tbl_columns_definition_form.inc.php File 13.55 KB 0644
tbl_common.inc.php File 1.3 KB 0644
tbl_info.inc.php File 3.54 KB 0644
tbl_partition_definition.inc.php File 5.55 KB 0644
tracking.lib.php File 54.93 KB 0644
transformations.lib.php File 14.63 KB 0644
url_generating.lib.php File 6.77 KB 0644
user_preferences.inc.php File 2.38 KB 0644
user_preferences.lib.php File 8.17 KB 0644
util.lib.php File 749 B 0644
vendor_config.php File 2.49 KB 0644
zip_extension.lib.php File 5.38 KB 0644