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admin/phpMyAdmin/libraries/classes/Database/Events.php
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604
admin/phpMyAdmin/libraries/classes/Database/Events.php
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@ -0,0 +1,604 @@
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<?php
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declare(strict_types=1);
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namespace PhpMyAdmin\Database;
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use PhpMyAdmin\DatabaseInterface;
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use PhpMyAdmin\Html\Generator;
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use PhpMyAdmin\Message;
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use PhpMyAdmin\ResponseRenderer;
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use PhpMyAdmin\Template;
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use PhpMyAdmin\Util;
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use function __;
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use function count;
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use function explode;
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use function htmlspecialchars;
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use function in_array;
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use function intval;
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use function mb_strtoupper;
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use function sprintf;
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use function str_contains;
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use function strtoupper;
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use function trim;
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/**
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* Functions for event management.
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*/
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class Events
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{
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/** @var array<string, array<int, string>> */
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private $status = [
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'query' => ['ENABLE', 'DISABLE', 'DISABLE ON SLAVE'],
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'display' => ['ENABLED', 'DISABLED', 'SLAVESIDE_DISABLED'],
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];
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/** @var array<int, string> */
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private $type = ['RECURRING', 'ONE TIME'];
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/** @var array<int, string> */
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private $interval = [
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'YEAR',
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'QUARTER',
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'MONTH',
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'DAY',
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'HOUR',
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'MINUTE',
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'WEEK',
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'SECOND',
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'YEAR_MONTH',
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'DAY_HOUR',
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'DAY_MINUTE',
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'DAY_SECOND',
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'HOUR_MINUTE',
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'HOUR_SECOND',
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'MINUTE_SECOND',
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];
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/** @var DatabaseInterface */
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private $dbi;
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/** @var Template */
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private $template;
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/** @var ResponseRenderer */
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private $response;
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/**
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* @param DatabaseInterface $dbi DatabaseInterface instance.
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* @param Template $template Template instance.
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* @param ResponseRenderer $response Response instance.
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*/
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public function __construct(DatabaseInterface $dbi, Template $template, $response)
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{
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$this->dbi = $dbi;
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$this->template = $template;
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$this->response = $response;
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}
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/**
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* Handles editor requests for adding or editing an item
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*/
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public function handleEditor(): void
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{
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global $db, $table, $errors, $message;
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if (! empty($_POST['editor_process_add']) || ! empty($_POST['editor_process_edit'])) {
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$sql_query = '';
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$item_query = $this->getQueryFromRequest();
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// set by getQueryFromRequest()
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if (! count($errors)) {
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// Execute the created query
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if (! empty($_POST['editor_process_edit'])) {
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// Backup the old trigger, in case something goes wrong
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$create_item = $this->dbi->getDefinition($db, 'EVENT', $_POST['item_original_name']);
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$drop_item = 'DROP EVENT IF EXISTS '
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. Util::backquote($_POST['item_original_name'])
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. ";\n";
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$result = $this->dbi->tryQuery($drop_item);
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if (! $result) {
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$errors[] = sprintf(
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__('The following query has failed: "%s"'),
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htmlspecialchars($drop_item)
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)
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. '<br>'
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. __('MySQL said: ') . $this->dbi->getError();
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} else {
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$result = $this->dbi->tryQuery($item_query);
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if (! $result) {
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$errors[] = sprintf(
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__('The following query has failed: "%s"'),
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htmlspecialchars($item_query)
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)
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. '<br>'
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. __('MySQL said: ') . $this->dbi->getError();
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// We dropped the old item, but were unable to create
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// the new one. Try to restore the backup query
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$result = $this->dbi->tryQuery($create_item);
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if (! $result) {
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$errors = $this->checkResult($create_item, $errors);
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}
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} else {
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$message = Message::success(
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__('Event %1$s has been modified.')
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);
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$message->addParam(
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Util::backquote($_POST['item_name'])
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);
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$sql_query = $drop_item . $item_query;
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}
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}
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} else {
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// 'Add a new item' mode
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$result = $this->dbi->tryQuery($item_query);
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if (! $result) {
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$errors[] = sprintf(
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__('The following query has failed: "%s"'),
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htmlspecialchars($item_query)
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)
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. '<br><br>'
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. __('MySQL said: ') . $this->dbi->getError();
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} else {
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$message = Message::success(
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__('Event %1$s has been created.')
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);
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$message->addParam(
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Util::backquote($_POST['item_name'])
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);
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$sql_query = $item_query;
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}
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}
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}
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if (count($errors)) {
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$message = Message::error(
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'<b>'
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. __(
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'One or more errors have occurred while processing your request:'
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)
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. '</b>'
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);
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$message->addHtml('<ul>');
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foreach ($errors as $string) {
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$message->addHtml('<li>' . $string . '</li>');
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}
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$message->addHtml('</ul>');
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}
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$output = Generator::getMessage($message, $sql_query);
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if ($this->response->isAjax()) {
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if ($message->isSuccess()) {
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$events = $this->dbi->getEvents($db, $_POST['item_name']);
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$event = $events[0];
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$this->response->addJSON(
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'name',
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htmlspecialchars(
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mb_strtoupper($_POST['item_name'])
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)
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);
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if (! empty($event)) {
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$sqlDrop = sprintf(
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'DROP EVENT IF EXISTS %s',
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Util::backquote($event['name'])
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);
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$this->response->addJSON(
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'new_row',
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$this->template->render('database/events/row', [
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'db' => $db,
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'table' => $table,
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'event' => $event,
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'has_privilege' => Util::currentUserHasPrivilege('EVENT', $db),
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'sql_drop' => $sqlDrop,
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'row_class' => '',
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])
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);
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}
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$this->response->addJSON('insert', ! empty($event));
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$this->response->addJSON('message', $output);
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} else {
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$this->response->setRequestStatus(false);
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$this->response->addJSON('message', $message);
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}
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$this->response->addJSON('tableType', 'events');
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exit;
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}
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}
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/**
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* Display a form used to add/edit a trigger, if necessary
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*/
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if (
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! count($errors)
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&& (! empty($_POST['editor_process_add'])
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|| ! empty($_POST['editor_process_edit'])
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|| (empty($_REQUEST['add_item'])
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&& empty($_REQUEST['edit_item'])
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&& empty($_POST['item_changetype'])))
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) {
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return;
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}
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// FIXME: this must be simpler than that
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$operation = '';
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$title = '';
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$item = null;
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$mode = '';
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if (! empty($_POST['item_changetype'])) {
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$operation = 'change';
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}
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// Get the data for the form (if any)
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if (! empty($_REQUEST['add_item'])) {
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$title = __('Add event');
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$item = $this->getDataFromRequest();
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$mode = 'add';
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} elseif (! empty($_REQUEST['edit_item'])) {
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$title = __('Edit event');
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if (
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! empty($_REQUEST['item_name'])
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&& empty($_POST['editor_process_edit'])
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&& empty($_POST['item_changetype'])
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) {
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$item = $this->getDataFromName($_REQUEST['item_name']);
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if ($item !== null) {
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$item['item_original_name'] = $item['item_name'];
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}
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} else {
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$item = $this->getDataFromRequest();
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}
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$mode = 'edit';
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}
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$this->sendEditor($mode, $item, $title, $db, $operation);
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}
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/**
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* This function will generate the values that are required to for the editor
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*
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* @return array Data necessary to create the editor.
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*/
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public function getDataFromRequest()
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{
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$retval = [];
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$indices = [
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'item_name',
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'item_original_name',
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'item_status',
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'item_execute_at',
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'item_interval_value',
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'item_interval_field',
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'item_starts',
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'item_ends',
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'item_definition',
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'item_preserve',
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'item_comment',
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'item_definer',
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];
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foreach ($indices as $index) {
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$retval[$index] = $_POST[$index] ?? '';
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}
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$retval['item_type'] = 'ONE TIME';
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$retval['item_type_toggle'] = 'RECURRING';
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if (isset($_POST['item_type']) && $_POST['item_type'] === 'RECURRING') {
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$retval['item_type'] = 'RECURRING';
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$retval['item_type_toggle'] = 'ONE TIME';
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}
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return $retval;
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}
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/**
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* This function will generate the values that are required to complete
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* the "Edit event" form given the name of a event.
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*
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* @param string $name The name of the event.
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*
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* @return array|null Data necessary to create the editor.
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*/
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public function getDataFromName($name): ?array
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{
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global $db;
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$retval = [];
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$columns = '`EVENT_NAME`, `STATUS`, `EVENT_TYPE`, `EXECUTE_AT`, '
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. '`INTERVAL_VALUE`, `INTERVAL_FIELD`, `STARTS`, `ENDS`, '
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. '`EVENT_DEFINITION`, `ON_COMPLETION`, `DEFINER`, `EVENT_COMMENT`';
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$where = 'EVENT_SCHEMA ' . Util::getCollateForIS() . '='
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. "'" . $this->dbi->escapeString($db) . "' "
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. "AND EVENT_NAME='" . $this->dbi->escapeString($name) . "'";
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$query = 'SELECT ' . $columns . ' FROM `INFORMATION_SCHEMA`.`EVENTS` WHERE ' . $where . ';';
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$item = $this->dbi->fetchSingleRow($query);
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if (! $item) {
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return null;
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}
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$retval['item_name'] = $item['EVENT_NAME'];
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$retval['item_status'] = $item['STATUS'];
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$retval['item_type'] = $item['EVENT_TYPE'];
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if ($retval['item_type'] === 'RECURRING') {
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$retval['item_type_toggle'] = 'ONE TIME';
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} else {
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$retval['item_type_toggle'] = 'RECURRING';
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}
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$retval['item_execute_at'] = $item['EXECUTE_AT'];
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$retval['item_interval_value'] = $item['INTERVAL_VALUE'];
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$retval['item_interval_field'] = $item['INTERVAL_FIELD'];
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$retval['item_starts'] = $item['STARTS'];
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$retval['item_ends'] = $item['ENDS'];
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$retval['item_preserve'] = '';
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if ($item['ON_COMPLETION'] === 'PRESERVE') {
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$retval['item_preserve'] = " checked='checked'";
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}
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$retval['item_definition'] = $item['EVENT_DEFINITION'];
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$retval['item_definer'] = $item['DEFINER'];
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$retval['item_comment'] = $item['EVENT_COMMENT'];
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return $retval;
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}
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/**
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* Displays a form used to add/edit an event
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*
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* @param string $mode If the editor will be used to edit an event
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* or add a new one: 'edit' or 'add'.
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* @param string $operation If the editor was previously invoked with
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* JS turned off, this will hold the name of
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* the current operation
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* @param array $item Data for the event returned by
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* getDataFromRequest() or getDataFromName()
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*
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* @return string HTML code for the editor.
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*/
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public function getEditorForm($mode, $operation, array $item)
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{
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global $db;
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if ($operation === 'change') {
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if ($item['item_type'] === 'RECURRING') {
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$item['item_type'] = 'ONE TIME';
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$item['item_type_toggle'] = 'RECURRING';
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} else {
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$item['item_type'] = 'RECURRING';
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$item['item_type_toggle'] = 'ONE TIME';
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}
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}
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return $this->template->render('database/events/editor_form', [
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'db' => $db,
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'event' => $item,
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'mode' => $mode,
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'is_ajax' => $this->response->isAjax(),
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'status_display' => $this->status['display'],
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'event_type' => $this->type,
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'event_interval' => $this->interval,
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]);
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}
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/**
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* Composes the query necessary to create an event from an HTTP request.
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*
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* @return string The CREATE EVENT query.
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*/
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public function getQueryFromRequest()
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{
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global $errors;
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$query = 'CREATE ';
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if (! empty($_POST['item_definer'])) {
|
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if (str_contains($_POST['item_definer'], '@')) {
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$arr = explode('@', $_POST['item_definer']);
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$query .= 'DEFINER=' . Util::backquote($arr[0]);
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$query .= '@' . Util::backquote($arr[1]) . ' ';
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} else {
|
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$errors[] = __('The definer must be in the "username@hostname" format!');
|
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}
|
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}
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|
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$query .= 'EVENT ';
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if (! empty($_POST['item_name'])) {
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$query .= Util::backquote($_POST['item_name']) . ' ';
|
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} else {
|
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$errors[] = __('You must provide an event name!');
|
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}
|
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$query .= 'ON SCHEDULE ';
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if (! empty($_POST['item_type']) && in_array($_POST['item_type'], $this->type)) {
|
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if ($_POST['item_type'] === 'RECURRING') {
|
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if (
|
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! empty($_POST['item_interval_value'])
|
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&& ! empty($_POST['item_interval_field'])
|
||||
&& in_array($_POST['item_interval_field'], $this->interval)
|
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) {
|
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$query .= 'EVERY ' . intval($_POST['item_interval_value']) . ' ';
|
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$query .= $_POST['item_interval_field'] . ' ';
|
||||
} else {
|
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$errors[] = __('You must provide a valid interval value for the event.');
|
||||
}
|
||||
|
||||
if (! empty($_POST['item_starts'])) {
|
||||
$query .= "STARTS '"
|
||||
. $this->dbi->escapeString($_POST['item_starts'])
|
||||
. "' ";
|
||||
}
|
||||
|
||||
if (! empty($_POST['item_ends'])) {
|
||||
$query .= "ENDS '"
|
||||
. $this->dbi->escapeString($_POST['item_ends'])
|
||||
. "' ";
|
||||
}
|
||||
} else {
|
||||
if (! empty($_POST['item_execute_at'])) {
|
||||
$query .= "AT '"
|
||||
. $this->dbi->escapeString($_POST['item_execute_at'])
|
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. "' ";
|
||||
} else {
|
||||
$errors[] = __('You must provide a valid execution time for the event.');
|
||||
}
|
||||
}
|
||||
} else {
|
||||
$errors[] = __('You must provide a valid type for the event.');
|
||||
}
|
||||
|
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$query .= 'ON COMPLETION ';
|
||||
if (empty($_POST['item_preserve'])) {
|
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$query .= 'NOT ';
|
||||
}
|
||||
|
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$query .= 'PRESERVE ';
|
||||
if (! empty($_POST['item_status'])) {
|
||||
foreach ($this->status['display'] as $key => $value) {
|
||||
if ($value == $_POST['item_status']) {
|
||||
$query .= $this->status['query'][$key] . ' ';
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (! empty($_POST['item_comment'])) {
|
||||
$query .= "COMMENT '" . $this->dbi->escapeString($_POST['item_comment']) . "' ";
|
||||
}
|
||||
|
||||
$query .= 'DO ';
|
||||
if (! empty($_POST['item_definition'])) {
|
||||
$query .= $_POST['item_definition'];
|
||||
} else {
|
||||
$errors[] = __('You must provide an event definition.');
|
||||
}
|
||||
|
||||
return $query;
|
||||
}
|
||||
|
||||
public function getEventSchedulerStatus(): bool
|
||||
{
|
||||
$state = (string) $this->dbi->fetchValue('SHOW GLOBAL VARIABLES LIKE \'event_scheduler\'', 1);
|
||||
|
||||
return strtoupper($state) === 'ON' || $state === '1';
|
||||
}
|
||||
|
||||
/**
|
||||
* @param string|null $createStatement Query
|
||||
* @param array $errors Errors
|
||||
*
|
||||
* @return array
|
||||
*/
|
||||
private function checkResult($createStatement, array $errors)
|
||||
{
|
||||
// OMG, this is really bad! We dropped the query,
|
||||
// failed to create a new one
|
||||
// and now even the backup query does not execute!
|
||||
// This should not happen, but we better handle
|
||||
// this just in case.
|
||||
$errors[] = __('Sorry, we failed to restore the dropped event.') . '<br>'
|
||||
. __('The backed up query was:')
|
||||
. '"' . htmlspecialchars((string) $createStatement) . '"<br>'
|
||||
. __('MySQL said: ') . $this->dbi->getError();
|
||||
|
||||
return $errors;
|
||||
}
|
||||
|
||||
/**
|
||||
* Send editor via ajax or by echoing.
|
||||
*
|
||||
* @param string $mode Editor mode 'add' or 'edit'
|
||||
* @param array|null $item Data necessary to create the editor
|
||||
* @param string $title Title of the editor
|
||||
* @param string $db Database
|
||||
* @param string $operation Operation 'change' or ''
|
||||
*/
|
||||
private function sendEditor($mode, ?array $item, $title, $db, $operation): void
|
||||
{
|
||||
if ($item !== null) {
|
||||
$editor = $this->getEditorForm($mode, $operation, $item);
|
||||
if ($this->response->isAjax()) {
|
||||
$this->response->addJSON('message', $editor);
|
||||
$this->response->addJSON('title', $title);
|
||||
} else {
|
||||
echo "\n\n<h2>" . $title . "</h2>\n\n" . $editor;
|
||||
unset($_POST);
|
||||
}
|
||||
|
||||
exit;
|
||||
}
|
||||
|
||||
$message = __('Error in processing request:') . ' ';
|
||||
$message .= sprintf(
|
||||
__('No event with name %1$s found in database %2$s.'),
|
||||
htmlspecialchars(Util::backquote($_REQUEST['item_name'])),
|
||||
htmlspecialchars(Util::backquote($db))
|
||||
);
|
||||
$message = Message::error($message);
|
||||
if ($this->response->isAjax()) {
|
||||
$this->response->setRequestStatus(false);
|
||||
$this->response->addJSON('message', $message);
|
||||
exit;
|
||||
}
|
||||
|
||||
echo $message->getDisplay();
|
||||
}
|
||||
|
||||
public function export(): void
|
||||
{
|
||||
global $db;
|
||||
|
||||
if (empty($_GET['export_item']) || empty($_GET['item_name'])) {
|
||||
return;
|
||||
}
|
||||
|
||||
$itemName = $_GET['item_name'];
|
||||
$exportData = $this->dbi->getDefinition($db, 'EVENT', $itemName);
|
||||
|
||||
if (! $exportData) {
|
||||
$exportData = false;
|
||||
}
|
||||
|
||||
$itemName = htmlspecialchars(Util::backquote($itemName));
|
||||
if ($exportData !== false) {
|
||||
$exportData = htmlspecialchars(trim($exportData));
|
||||
$title = sprintf(__('Export of event %s'), $itemName);
|
||||
|
||||
if ($this->response->isAjax()) {
|
||||
$this->response->addJSON('message', $exportData);
|
||||
$this->response->addJSON('title', $title);
|
||||
|
||||
exit;
|
||||
}
|
||||
|
||||
$output = '<div class="container">';
|
||||
$output .= '<h2>' . $title . '</h2>';
|
||||
$output .= '<div class="card"><div class="card-body">';
|
||||
$output .= '<textarea rows="15" class="form-control">' . $exportData . '</textarea>';
|
||||
$output .= '</div></div></div>';
|
||||
|
||||
$this->response->addHTML($output);
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
$message = sprintf(
|
||||
__('Error in processing request: No event with name %1$s found in database %2$s.'),
|
||||
$itemName,
|
||||
htmlspecialchars(Util::backquote($db))
|
||||
);
|
||||
$message = Message::error($message);
|
||||
|
||||
if ($this->response->isAjax()) {
|
||||
$this->response->setRequestStatus(false);
|
||||
$this->response->addJSON('message', $message);
|
||||
|
||||
exit;
|
||||
}
|
||||
|
||||
$this->response->addHTML($message->getDisplay());
|
||||
}
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue