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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\Response; |
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use PhpMyAdmin\Template; |
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use PhpMyAdmin\Util; |
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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 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, $table; |
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/** |
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* Process all requests |
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*/ |
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$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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'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, $table; |
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if ( |
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! empty($_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 ( |
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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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$this->response->addJSON('tableType', 'triggers'); |
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exit; |
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} |
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} |
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/** |
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* Display a form used to add/edit a trigger, if necessary |
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*/ |
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if ( |
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! count($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']))) // 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 ( |
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! 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, $db); |
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} |
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285
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/** |
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* This function will generate the values that are required to for the editor |
287
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* |
288
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* @return array Data necessary to create the editor. |
289
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*/ |
290
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8 |
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public function getDataFromRequest() |
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{ |
292
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8 |
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$retval = []; |
293
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2 |
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$indices = [ |
294
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6 |
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'item_name', |
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'item_table', |
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'item_original_name', |
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'item_action_timing', |
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'item_event_manipulation', |
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'item_definition', |
300
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'item_definer', |
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]; |
302
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8 |
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foreach ($indices as $index) { |
303
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8 |
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$retval[$index] = $_POST[$index] ?? ''; |
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} |
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306
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8 |
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return $retval; |
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} |
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309
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/** |
310
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* This function will generate the values that are required to complete |
311
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* the "Edit trigger" form given the name of a trigger. |
312
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* |
313
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* @param string $name The name of the trigger. |
314
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* |
315
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* @return array|null Data necessary to create the editor. |
316
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*/ |
317
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public function getDataFromName($name): ?array |
318
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{ |
319
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global $db, $table; |
320
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321
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$temp = []; |
322
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$items = $this->dbi->getTriggers($db, $table, ''); |
323
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foreach ($items as $value) { |
324
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if ($value['name'] != $name) { |
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continue; |
326
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} |
327
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328
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$temp = $value; |
329
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} |
330
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331
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if (empty($temp)) { |
332
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return null; |
333
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} |
334
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335
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$retval = []; |
336
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$retval['create'] = $temp['create']; |
337
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$retval['drop'] = $temp['drop']; |
338
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$retval['item_name'] = $temp['name']; |
339
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$retval['item_table'] = $temp['table']; |
340
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$retval['item_action_timing'] = $temp['action_timing']; |
341
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$retval['item_event_manipulation'] = $temp['event_manipulation']; |
342
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$retval['item_definition'] = $temp['definition']; |
343
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$retval['item_definer'] = $temp['definer']; |
344
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345
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return $retval; |
346
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} |
347
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|
348
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/** |
349
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* Displays a form used to add/edit a trigger |
350
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* |
351
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* @param string $db |
352
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* @param string $table |
353
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* @param string $mode If the editor will be used to edit a trigger or add a new one: 'edit' or 'add'. |
354
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* @param array $item Data for the trigger returned by getDataFromRequest() or getDataFromName() |
355
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*/ |
356
|
72 |
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public function getEditorForm($db, $table, $mode, array $item): string |
357
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{ |
358
|
72 |
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$query = 'SELECT `TABLE_NAME` FROM `INFORMATION_SCHEMA`.`TABLES` '; |
359
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72 |
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$query .= 'WHERE `TABLE_SCHEMA`=\'' . $this->dbi->escapeString($db) . '\' '; |
360
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72 |
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$query .= 'AND `TABLE_TYPE` IN (\'BASE TABLE\', \'SYSTEM VERSIONED\')'; |
361
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72 |
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$tables = $this->dbi->fetchResult($query); |
362
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|
363
|
72 |
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return $this->template->render('database/triggers/editor_form', [ |
364
|
72 |
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'db' => $db, |
365
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72 |
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'table' => $table, |
366
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72 |
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'is_edit' => $mode === 'edit', |
367
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72 |
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'item' => $item, |
368
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72 |
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'tables' => $tables, |
369
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72 |
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'time' => $this->time, |
370
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72 |
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'events' => $this->event, |
371
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72 |
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'is_ajax' => $this->response->isAjax(), |
372
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]); |
373
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} |
374
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|
375
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/** |
376
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|
* Composes the query necessary to create a trigger from an HTTP request. |
377
|
|
|
* |
378
|
|
|
* @return string The CREATE TRIGGER query. |
379
|
|
|
*/ |
380
|
16 |
|
public function getQueryFromRequest() |
381
|
|
|
{ |
382
|
16 |
|
global $db, $errors; |
383
|
|
|
|
384
|
16 |
|
$query = 'CREATE '; |
385
|
16 |
|
if (! empty($_POST['item_definer'])) { |
386
|
|
|
if ( |
387
|
12 |
|
mb_strpos($_POST['item_definer'], '@') !== false |
388
|
|
|
) { |
389
|
8 |
|
$arr = explode('@', $_POST['item_definer']); |
390
|
8 |
|
$query .= 'DEFINER=' . Util::backquote($arr[0]); |
391
|
8 |
|
$query .= '@' . Util::backquote($arr[1]) . ' '; |
392
|
|
|
} else { |
393
|
4 |
|
$errors[] = __('The definer must be in the "username@hostname" format!'); |
394
|
|
|
} |
395
|
|
|
} |
396
|
|
|
|
397
|
16 |
|
$query .= 'TRIGGER '; |
398
|
16 |
|
if (! empty($_POST['item_name'])) { |
399
|
12 |
|
$query .= Util::backquote($_POST['item_name']) . ' '; |
|
|
|
|
400
|
|
|
} else { |
401
|
4 |
|
$errors[] = __('You must provide a trigger name!'); |
402
|
|
|
} |
403
|
|
|
|
404
|
|
|
if ( |
405
|
16 |
|
! empty($_POST['item_timing']) |
406
|
16 |
|
&& in_array($_POST['item_timing'], $this->time) |
407
|
|
|
) { |
408
|
12 |
|
$query .= $_POST['item_timing'] . ' '; |
409
|
|
|
} else { |
410
|
4 |
|
$errors[] = __('You must provide a valid timing for the trigger!'); |
411
|
|
|
} |
412
|
|
|
|
413
|
|
|
if ( |
414
|
16 |
|
! empty($_POST['item_event']) |
415
|
16 |
|
&& in_array($_POST['item_event'], $this->event) |
416
|
|
|
) { |
417
|
8 |
|
$query .= $_POST['item_event'] . ' '; |
418
|
|
|
} else { |
419
|
8 |
|
$errors[] = __('You must provide a valid event for the trigger!'); |
420
|
|
|
} |
421
|
|
|
|
422
|
16 |
|
$query .= 'ON '; |
423
|
|
|
if ( |
424
|
16 |
|
! empty($_POST['item_table']) |
425
|
16 |
|
&& in_array($_POST['item_table'], $this->dbi->getTables($db)) |
426
|
|
|
) { |
427
|
4 |
|
$query .= Util::backquote($_POST['item_table']); |
428
|
|
|
} else { |
429
|
12 |
|
$errors[] = __('You must provide a valid table name!'); |
430
|
|
|
} |
431
|
|
|
|
432
|
16 |
|
$query .= ' FOR EACH ROW '; |
433
|
16 |
|
if (! empty($_POST['item_definition'])) { |
434
|
12 |
|
$query .= $_POST['item_definition']; |
435
|
|
|
} else { |
436
|
4 |
|
$errors[] = __('You must provide a trigger definition.'); |
437
|
|
|
} |
438
|
|
|
|
439
|
16 |
|
return $query; |
440
|
|
|
} |
441
|
|
|
|
442
|
|
|
/** |
443
|
|
|
* @param resource|bool $result Query result |
444
|
|
|
* @param string $createStatement Query |
445
|
|
|
* @param array $errors Errors |
446
|
|
|
* |
447
|
|
|
* @return array |
448
|
|
|
*/ |
449
|
|
|
private function checkResult($result, $createStatement, array $errors) |
450
|
|
|
{ |
451
|
|
|
if ($result) { |
452
|
|
|
return $errors; |
453
|
|
|
} |
454
|
|
|
|
455
|
|
|
// OMG, this is really bad! We dropped the query, |
456
|
|
|
// failed to create a new one |
457
|
|
|
// and now even the backup query does not execute! |
458
|
|
|
// This should not happen, but we better handle |
459
|
|
|
// this just in case. |
460
|
|
|
$errors[] = __('Sorry, we failed to restore the dropped trigger.') . '<br>' |
461
|
|
|
. __('The backed up query was:') |
462
|
|
|
. '"' . htmlspecialchars($createStatement) . '"<br>' |
463
|
|
|
. __('MySQL said: ') . $this->dbi->getError(); |
464
|
|
|
|
465
|
|
|
return $errors; |
466
|
|
|
} |
467
|
|
|
|
468
|
|
|
/** |
469
|
|
|
* Send editor via ajax or by echoing. |
470
|
|
|
* |
471
|
|
|
* @param string $mode Editor mode 'add' or 'edit' |
472
|
|
|
* @param array|null $item Data necessary to create the editor |
473
|
|
|
* @param string $title Title of the editor |
474
|
|
|
* @param string $db Database |
475
|
|
|
* |
476
|
|
|
* @return void |
477
|
|
|
*/ |
478
|
|
|
private function sendEditor($mode, ?array $item, $title, $db) |
|
|
|
|
479
|
|
|
{ |
480
|
|
|
global $db, $table; |
481
|
|
|
|
482
|
|
|
if ($item !== null) { |
|
|
|
|
483
|
|
|
$editor = $this->getEditorForm($db, $table, $mode, $item); |
484
|
|
|
if ($this->response->isAjax()) { |
485
|
|
|
$this->response->addJSON('message', $editor); |
486
|
|
|
$this->response->addJSON('title', $title); |
487
|
|
|
} else { |
488
|
|
|
echo "\n\n<h2>" . $title . "</h2>\n\n" . $editor; |
489
|
|
|
unset($_POST); |
490
|
|
|
} |
491
|
|
|
|
492
|
|
|
exit; |
|
|
|
|
493
|
|
|
} |
494
|
|
|
|
495
|
|
|
$message = __('Error in processing request:') . ' '; |
496
|
|
|
$message .= sprintf( |
497
|
|
|
__('No trigger with name %1$s found in database %2$s.'), |
498
|
|
|
htmlspecialchars(Util::backquote($_REQUEST['item_name'])), |
499
|
|
|
htmlspecialchars(Util::backquote($db)) |
500
|
|
|
); |
501
|
|
|
$message = Message::error($message); |
502
|
|
|
if ($this->response->isAjax()) { |
503
|
|
|
$this->response->setRequestStatus(false); |
504
|
|
|
$this->response->addJSON('message', $message); |
505
|
|
|
exit; |
|
|
|
|
506
|
|
|
} |
507
|
|
|
|
508
|
|
|
echo $message->getDisplay(); |
509
|
|
|
} |
510
|
|
|
|
511
|
|
|
private function export(): void |
512
|
|
|
{ |
513
|
|
|
global $db, $table; |
514
|
|
|
|
515
|
|
|
if (empty($_GET['export_item']) || empty($_GET['item_name'])) { |
516
|
|
|
return; |
517
|
|
|
} |
518
|
|
|
|
519
|
|
|
$itemName = $_GET['item_name']; |
520
|
|
|
$triggers = $this->dbi->getTriggers($db, $table, ''); |
521
|
|
|
$exportData = false; |
522
|
|
|
|
523
|
|
|
foreach ($triggers as $trigger) { |
524
|
|
|
if ($trigger['name'] === $itemName) { |
525
|
|
|
$exportData = $trigger['create']; |
526
|
|
|
break; |
527
|
|
|
} |
528
|
|
|
} |
529
|
|
|
|
530
|
|
|
if ($exportData !== false) { |
531
|
|
|
$title = sprintf(__('Export of trigger %s'), htmlspecialchars(Util::backquote($itemName))); |
|
|
|
|
532
|
|
|
|
533
|
|
|
if ($this->response->isAjax()) { |
534
|
|
|
$this->response->addJSON('message', htmlspecialchars(trim($exportData))); |
535
|
|
|
$this->response->addJSON('title', $title); |
536
|
|
|
|
537
|
|
|
exit; |
|
|
|
|
538
|
|
|
} |
539
|
|
|
|
540
|
|
|
$this->response->addHTML($this->template->render('database/triggers/export', [ |
541
|
|
|
'data' => $exportData, |
542
|
|
|
'item_name' => $itemName, |
543
|
|
|
])); |
544
|
|
|
|
545
|
|
|
return; |
546
|
|
|
} |
547
|
|
|
|
548
|
|
|
$message = sprintf( |
549
|
|
|
__('Error in processing request: No trigger with name %1$s found in database %2$s.'), |
550
|
|
|
htmlspecialchars(Util::backquote($itemName)), |
551
|
|
|
htmlspecialchars(Util::backquote($db)) |
552
|
|
|
); |
553
|
|
|
$message = Message::error($message); |
554
|
|
|
|
555
|
|
|
if ($this->response->isAjax()) { |
556
|
|
|
$this->response->setRequestStatus(false); |
557
|
|
|
$this->response->addJSON('message', $message); |
558
|
|
|
|
559
|
|
|
exit; |
|
|
|
|
560
|
|
|
} |
561
|
|
|
|
562
|
|
|
$this->response->addHTML($message->getDisplay()); |
563
|
|
|
} |
564
|
|
|
} |
565
|
|
|
|
In general, usage of exit should be done with care and only when running in a scripting context like a CLI script.