651 lines
23 KiB
PHP
651 lines
23 KiB
PHP
<?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\Response;
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use PhpMyAdmin\Template;
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use PhpMyAdmin\Url;
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use PhpMyAdmin\Util;
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use const ENT_QUOTES;
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use function count;
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use function explode;
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use function htmlentities;
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use function htmlspecialchars;
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use function in_array;
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use function mb_strpos;
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use function mb_strtoupper;
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use function sprintf;
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use function trim;
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/**
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* Functions for trigger management.
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*/
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class Triggers
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{
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/** @var array<int, string> */
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private $time = ['BEFORE', 'AFTER'];
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/** @var array<int, string> */
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private $event = ['INSERT', 'UPDATE', 'DELETE'];
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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 Response */
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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 Response $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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* Main function for the triggers functionality
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*
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* @return void
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*/
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public function main()
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{
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global $db, $table, $text_dir, $PMA_Theme;
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/**
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* Process all requests
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*/
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$this->handleEditor();
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$this->export();
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$items = $this->dbi->getTriggers($db, $table);
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$hasTriggerPrivilege = Util::currentUserHasPrivilege('TRIGGER', $db, $table);
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$isAjax = $this->response->isAjax() && empty($_REQUEST['ajax_page_request']);
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$rows = '';
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foreach ($items as $item) {
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$rows .= $this->template->render('database/triggers/row', [
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'db' => $db,
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'table' => $table,
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'trigger' => $item,
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'has_drop_privilege' => $hasTriggerPrivilege,
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'has_edit_privilege' => $hasTriggerPrivilege,
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'row_class' => $isAjax ? 'ajaxInsert hide' : '',
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]);
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}
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echo $this->template->render('database/triggers/list', [
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'db' => $db,
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'table' => $table,
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'items' => $items,
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'rows' => $rows,
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'select_all_arrow_src' => $PMA_Theme->getImgPath() . 'arrow_' . $text_dir . '.png',
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]);
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echo $this->template->render('database/triggers/footer', [
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'db' => $db,
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'table' => $table,
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'has_privilege' => $hasTriggerPrivilege,
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]);
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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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* @return void
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*/
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public function handleEditor()
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{
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global $db, $errors, $message, $table;
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if (! empty($_POST['editor_process_add'])
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|| ! empty($_POST['editor_process_edit'])
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) {
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$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($_POST['editor_process_edit'])) {
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// Backup the old trigger, in case something goes wrong
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$trigger = $this->getDataFromName($_POST['item_original_name']);
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$create_item = $trigger['create'];
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$drop_item = $trigger['drop'] . ';';
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$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: ') . $this->dbi->getError();
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// We dropped the old item, but were unable to create the
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// new one. Try to restore the backup query.
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$result = $this->dbi->tryQuery($create_item);
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$errors = $this->checkResult($result, $create_item, $errors);
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} else {
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$message = Message::success(
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__('Trigger %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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__('Trigger %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 ($message->isSuccess()) {
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$items = $this->dbi->getTriggers($db, $table, '');
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$trigger = false;
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foreach ($items as $value) {
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if ($value['name'] != $_POST['item_name']) {
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continue;
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}
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$trigger = $value;
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}
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$insert = false;
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if (empty($table)
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|| ($trigger !== false && $table == $trigger['table'])
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) {
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$insert = true;
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$hasTriggerPrivilege = Util::currentUserHasPrivilege('TRIGGER', $db, $table);
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$this->response->addJSON(
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'new_row',
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$this->template->render('database/triggers/row', [
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'db' => $db,
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'table' => $table,
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'trigger' => $trigger,
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'has_drop_privilege' => $hasTriggerPrivilege,
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'has_edit_privilege' => $hasTriggerPrivilege,
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'row_class' => '',
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])
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);
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$this->response->addJSON(
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'name',
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htmlspecialchars(
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mb_strtoupper(
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$_POST['item_name']
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)
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)
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);
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}
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$this->response->addJSON('insert', $insert);
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$this->response->addJSON('message', $output);
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} else {
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$this->response->addJSON('message', $message);
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$this->response->setRequestStatus(false);
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}
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$this->response->addJSON('tableType', 'triggers');
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exit;
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}
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}
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/**
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* Display a form used to add/edit a trigger, if necessary
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*/
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if (! count($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']))) // FIXME: this must be simpler than that
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) {
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return;
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}
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$mode = '';
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$item = null;
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$title = '';
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// Get the data for the form (if any)
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if (! empty($_REQUEST['add_item'])) {
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$title = __('Add trigger');
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$item = $this->getDataFromRequest();
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$mode = 'add';
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} elseif (! empty($_REQUEST['edit_item'])) {
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$title = __('Edit trigger');
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if (! empty($_REQUEST['item_name'])
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&& empty($_POST['editor_process_edit'])
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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, $db);
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}
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/**
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* This function will generate the values that are required to for the editor
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*
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* @return array Data necessary to create the editor.
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*/
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public function getDataFromRequest()
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{
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$retval = [];
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$indices = [
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'item_name',
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'item_table',
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'item_original_name',
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'item_action_timing',
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'item_event_manipulation',
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'item_definition',
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'item_definer',
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];
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foreach ($indices as $index) {
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$retval[$index] = $_POST[$index] ?? '';
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}
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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 trigger" form given the name of a trigger.
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*
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* @param string $name The name of the trigger.
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*
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* @return array|null Data necessary to create the editor.
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*/
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public function getDataFromName($name): ?array
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{
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global $db, $table;
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$temp = [];
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$items = $this->dbi->getTriggers($db, $table, '');
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foreach ($items as $value) {
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if ($value['name'] != $name) {
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continue;
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}
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$temp = $value;
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}
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if (empty($temp)) {
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return null;
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}
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$retval = [];
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$retval['create'] = $temp['create'];
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$retval['drop'] = $temp['drop'];
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$retval['item_name'] = $temp['name'];
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$retval['item_table'] = $temp['table'];
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$retval['item_action_timing'] = $temp['action_timing'];
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$retval['item_event_manipulation'] = $temp['event_manipulation'];
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$retval['item_definition'] = $temp['definition'];
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$retval['item_definer'] = $temp['definer'];
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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 a trigger
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*
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* @param string $mode If the editor will be used to edit a trigger
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* or add a new one: 'edit' or 'add'.
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* @param array $item Data for the trigger returned by getDataFromRequest()
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* or getDataFromName()
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*
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* @return string HTML code for the editor.
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*/
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public function getEditorForm($mode, array $item)
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{
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global $db, $table;
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$modeToUpper = mb_strtoupper($mode);
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// Escape special characters
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$need_escape = [
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'item_original_name',
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'item_name',
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'item_definition',
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'item_definer',
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];
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foreach ($need_escape as $key => $index) {
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$item[$index] = htmlentities($item[$index], ENT_QUOTES, 'UTF-8');
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}
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$original_data = '';
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if ($mode === 'edit') {
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$original_data = "<input name='item_original_name' "
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. "type='hidden' value='" . $item['item_original_name'] . "'>\n";
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}
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$query = 'SELECT `TABLE_NAME` FROM `INFORMATION_SCHEMA`.`TABLES` ';
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$query .= "WHERE `TABLE_SCHEMA`='" . $this->dbi->escapeString($db) . "' ";
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$query .= "AND `TABLE_TYPE` IN ('BASE TABLE', 'SYSTEM VERSIONED')";
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$tables = $this->dbi->fetchResult($query);
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// Create the output
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$retval = '';
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$retval .= '<!-- START ' . $modeToUpper . " TRIGGER FORM -->\n\n";
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$retval .= '<form class="rte_form" action="' . Url::getFromRoute('/database/triggers')
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. '" method="post">' . "\n";
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$retval .= "<input name='" . $mode . "_item' type='hidden' value='1'>\n";
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$retval .= $original_data;
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$retval .= Url::getHiddenInputs($db, $table) . "\n";
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$retval .= "<fieldset>\n";
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$retval .= '<legend>' . __('Details') . "</legend>\n";
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$retval .= "<table class='rte_table table table-borderless table-sm'>\n";
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$retval .= "<tr>\n";
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$retval .= ' <td>' . __('Trigger name') . "</td>\n";
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$retval .= " <td><input type='text' name='item_name' maxlength='64'\n";
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$retval .= " value='" . $item['item_name'] . "'></td>\n";
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$retval .= "</tr>\n";
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$retval .= "<tr>\n";
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$retval .= ' <td>' . __('Table') . "</td>\n";
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$retval .= " <td>\n";
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$retval .= " <select name='item_table'>\n";
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foreach ($tables as $key => $value) {
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$selected = '';
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if ($mode === 'add' && $value == $table) {
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$selected = " selected='selected'";
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} elseif ($mode === 'edit' && $value == $item['item_table']) {
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$selected = " selected='selected'";
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}
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$retval .= '<option' . $selected . '>';
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$retval .= htmlspecialchars($value);
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$retval .= "</option>\n";
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}
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$retval .= " </select>\n";
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$retval .= " </td>\n";
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$retval .= "</tr>\n";
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$retval .= "<tr>\n";
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$retval .= ' <td>' . _pgettext('Trigger action time', 'Time') . "</td>\n";
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$retval .= " <td><select name='item_timing'>\n";
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foreach ($this->time as $key => $value) {
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$selected = '';
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if (! empty($item['item_action_timing'])
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&& $item['item_action_timing'] == $value
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) {
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$selected = " selected='selected'";
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}
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$retval .= '<option' . $selected . '>' . $value . '</option>';
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}
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$retval .= " </select></td>\n";
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$retval .= "</tr>\n";
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$retval .= "<tr>\n";
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$retval .= ' <td>' . __('Event') . "</td>\n";
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$retval .= " <td><select name='item_event'>\n";
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foreach ($this->event as $key => $value) {
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$selected = '';
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if (! empty($item['item_event_manipulation'])
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&& $item['item_event_manipulation'] == $value
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) {
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$selected = " selected='selected'";
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}
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$retval .= '<option' . $selected . '>' . $value . '</option>';
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}
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$retval .= " </select></td>\n";
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$retval .= "</tr>\n";
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$retval .= "<tr>\n";
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$retval .= ' <td>' . __('Definition') . "</td>\n";
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$retval .= " <td><textarea name='item_definition' rows='15' cols='40'>";
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$retval .= $item['item_definition'];
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$retval .= "</textarea></td>\n";
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$retval .= "</tr>\n";
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$retval .= "<tr>\n";
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$retval .= ' <td>' . __('Definer') . "</td>\n";
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$retval .= " <td><input type='text' name='item_definer'\n";
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$retval .= " value='" . $item['item_definer'] . "'></td>\n";
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$retval .= "</tr>\n";
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$retval .= "</table>\n";
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$retval .= "</fieldset>\n";
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if ($this->response->isAjax()) {
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$retval .= "<input type='hidden' name='editor_process_" . $mode . "'\n";
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$retval .= " value='true'>\n";
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$retval .= "<input type='hidden' name='ajax_request' value='true'>\n";
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} else {
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$retval .= "<fieldset class='tblFooters'>\n";
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$retval .= " <input type='submit' name='editor_process_" . $mode . "'\n";
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$retval .= " value='" . __('Go') . "'>\n";
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$retval .= "</fieldset>\n";
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}
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$retval .= "</form>\n\n";
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$retval .= '<!-- END ' . $modeToUpper . " TRIGGER FORM -->\n\n";
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return $retval;
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}
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|
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/**
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* Composes the query necessary to create a trigger from an HTTP request.
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*
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* @return string The CREATE TRIGGER query.
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*/
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public function getQueryFromRequest()
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{
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global $db, $errors;
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$query = 'CREATE ';
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if (! empty($_POST['item_definer'])) {
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if (mb_strpos($_POST['item_definer'], '@') !== false
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) {
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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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$query .= 'TRIGGER ';
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if (! empty($_POST['item_name'])) {
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$query .= Util::backquote($_POST['item_name']) . ' ';
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} else {
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$errors[] = __('You must provide a trigger name!');
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}
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if (! empty($_POST['item_timing'])
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&& in_array($_POST['item_timing'], $this->time)
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) {
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$query .= $_POST['item_timing'] . ' ';
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} else {
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$errors[] = __('You must provide a valid timing for the trigger!');
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}
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if (! empty($_POST['item_event'])
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&& in_array($_POST['item_event'], $this->event)
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) {
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$query .= $_POST['item_event'] . ' ';
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} else {
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$errors[] = __('You must provide a valid event for the trigger!');
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}
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$query .= 'ON ';
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if (! empty($_POST['item_table'])
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&& in_array($_POST['item_table'], $this->dbi->getTables($db))
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) {
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$query .= Util::backquote($_POST['item_table']);
|
|
} else {
|
|
$errors[] = __('You must provide a valid table name!');
|
|
}
|
|
$query .= ' FOR EACH ROW ';
|
|
if (! empty($_POST['item_definition'])) {
|
|
$query .= $_POST['item_definition'];
|
|
} else {
|
|
$errors[] = __('You must provide a trigger definition.');
|
|
}
|
|
|
|
return $query;
|
|
}
|
|
|
|
/**
|
|
* @param resource|bool $result Query result
|
|
* @param string $createStatement Query
|
|
* @param array $errors Errors
|
|
*
|
|
* @return array
|
|
*/
|
|
private function checkResult($result, $createStatement, array $errors)
|
|
{
|
|
if ($result) {
|
|
return $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.
|
|
$errors[] = __('Sorry, we failed to restore the dropped trigger.') . '<br>'
|
|
. __('The backed up query was:')
|
|
. '"' . htmlspecialchars($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 $db Database
|
|
*
|
|
* @return void
|
|
*/
|
|
private function sendEditor($mode, ?array $item, $title, $db)
|
|
{
|
|
if ($item !== null) {
|
|
$editor = $this->getEditorForm($mode, $item);
|
|
if ($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:') . ' ';
|
|
$message .= sprintf(
|
|
__('No trigger with name %1$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();
|
|
}
|
|
|
|
private function export(): void
|
|
{
|
|
global $db, $table;
|
|
|
|
if (empty($_GET['export_item']) || empty($_GET['item_name'])) {
|
|
return;
|
|
}
|
|
|
|
$itemName = $_GET['item_name'];
|
|
$triggers = $this->dbi->getTriggers($db, $table, '');
|
|
$exportData = false;
|
|
|
|
foreach ($triggers as $trigger) {
|
|
if ($trigger['name'] === $itemName) {
|
|
$exportData = $trigger['create'];
|
|
break;
|
|
}
|
|
}
|
|
|
|
$itemName = htmlspecialchars(Util::backquote($_GET['item_name']));
|
|
if ($exportData !== false) {
|
|
$exportData = htmlspecialchars(trim($exportData));
|
|
$title = sprintf(__('Export of trigger %s'), $itemName);
|
|
|
|
if ($this->response->isAjax()) {
|
|
$this->response->addJSON('message', $exportData);
|
|
$this->response->addJSON('title', $title);
|
|
|
|
exit;
|
|
}
|
|
|
|
$exportData = '<textarea cols="40" rows="15" style="width: 100%;">'
|
|
. $exportData . '</textarea>';
|
|
echo "<fieldset>\n" . '<legend>' . $title . "</legend>\n"
|
|
. $exportData . "</fieldset>\n";
|
|
|
|
return;
|
|
}
|
|
|
|
$message = sprintf(
|
|
__('Error in processing request: No trigger with name %1$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;
|
|
}
|
|
|
|
echo $message->getDisplay();
|
|
}
|
|
}
|