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<?php |
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/* vim: set expandtab sw=4 ts=4 sts=4: */ |
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/** |
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* Functions for trigger management. |
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* |
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* @package PhpMyAdmin |
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*/ |
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declare(strict_types=1); |
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namespace PhpMyAdmin\Rte; |
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use PhpMyAdmin\DatabaseInterface; |
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use PhpMyAdmin\Message; |
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use PhpMyAdmin\Response; |
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use PhpMyAdmin\Url; |
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use PhpMyAdmin\Util; |
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/** |
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* PhpMyAdmin\Rte\Triggers class |
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* |
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* @package PhpMyAdmin |
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*/ |
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class Triggers |
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{ |
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/** |
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* @var Export |
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*/ |
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private $export; |
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/** |
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* @var Footer |
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*/ |
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private $footer; |
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/** |
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* @var General |
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*/ |
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private $general; |
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/** |
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* @var RteList |
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*/ |
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private $rteList; |
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/** |
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* @var Words |
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*/ |
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private $words; |
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/** |
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* @var DatabaseInterface |
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*/ |
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private $dbi; |
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/** |
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* Triggers constructor. |
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* |
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* @param DatabaseInterface $dbi DatabaseInterface object |
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*/ |
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public function __construct(DatabaseInterface $dbi) |
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{ |
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$this->dbi = $dbi; |
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$this->export = new Export($this->dbi); |
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$this->footer = new Footer($this->dbi); |
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$this->general = new General($this->dbi); |
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$this->rteList = new RteList($this->dbi); |
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$this->words = new Words(); |
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} |
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/** |
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* Sets required globals |
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* |
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* @return void |
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*/ |
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public function setGlobals() |
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{ |
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global $action_timings, $event_manipulations; |
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// Some definitions for triggers |
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$action_timings = [ |
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'BEFORE', |
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'AFTER', |
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]; |
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$event_manipulations = [ |
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'INSERT', |
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'UPDATE', |
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'DELETE', |
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]; |
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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, $table; |
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$this->setGlobals(); |
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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->triggers(); |
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/** |
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* Display a list of available triggers |
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*/ |
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$items = $this->dbi->getTriggers($db, $table); |
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echo $this->rteList->get('trigger', $items); |
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/** |
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* Display a link for adding a new trigger, |
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* if the user has the necessary privileges |
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*/ |
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echo $this->footer->triggers(); |
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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 = $this->getQueryFromRequest(); |
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if (! count($errors)) { // set by PhpMyAdmin\Rte\Routines::getQueryFromRequest() |
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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 = $this->general->checkResult( |
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$result, |
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__( |
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'Sorry, we failed to restore the dropped trigger.' |
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), |
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$create_item, |
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$errors |
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); |
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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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$output = Util::getMessage($message, $sql_query); |
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$response = Response::getInstance(); |
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if ($response->isAjax()) { |
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if ($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'] == $_POST['item_name']) { |
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$trigger = $value; |
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} |
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} |
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$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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$response->addJSON('new_row', $this->rteList->getTriggerRow($trigger)); |
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$response->addJSON( |
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'name', |
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htmlspecialchars( |
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mb_strtoupper( |
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$_POST['item_name'] |
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) |
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) |
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); |
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} |
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$response->addJSON('insert', $insert); |
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$response->addJSON('message', $output); |
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} else { |
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$response->addJSON('message', $message); |
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$response->setRequestStatus(false); |
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} |
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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($_REQUEST['edit_item']))) // FIXME: this must be simpler than that |
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) { |
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$mode = null; |
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$item = null; |
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$title = null; |
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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 = $this->words->get('add'); |
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$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 ($item !== false) { |
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$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->general->sendEditor('TRI', $mode, $item, $title, $db); |
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} |
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} |
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288
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/** |
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* This function will generate the values that are required to for the editor |
290
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* |
291
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* @return array Data necessary to create the editor. |
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*/ |
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public function getDataFromRequest() |
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{ |
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$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[$index] = isset($_POST[$index]) ? $_POST[$index] : ''; |
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} |
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return $retval; |
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} |
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311
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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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* |
315
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* @param string $name The name of the trigger. |
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* |
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* @return array|bool Data necessary to create the editor. |
318
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*/ |
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public function getDataFromName($name) |
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{ |
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global $db, $table; |
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323
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$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'] == $name) { |
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$temp = $value; |
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} |
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} |
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if (empty($temp)) { |
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return false; |
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} else { |
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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']; |
342
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return $retval; |
343
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} |
344
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} |
345
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|
346
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/** |
347
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* Displays a form used to add/edit a trigger |
348
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* |
349
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* @param string $mode If the editor will be used to edit a trigger |
350
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* or add a new one: 'edit' or 'add'. |
351
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* @param array $item Data for the trigger returned by getDataFromRequest() |
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* or getDataFromName() |
353
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* |
354
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* @return string HTML code for the editor. |
355
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*/ |
356
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public function getEditorForm($mode, array $item) |
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{ |
358
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global $db, $table, $event_manipulations, $action_timings; |
359
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|
360
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$modeToUpper = mb_strtoupper($mode); |
361
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$response = Response::getInstance(); |
362
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|
363
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// Escape special characters |
364
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$need_escape = [ |
365
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'item_original_name', |
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'item_name', |
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'item_definition', |
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'item_definer', |
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]; |
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foreach ($need_escape as $key => $index) { |
371
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$item[$index] = htmlentities($item[$index], ENT_QUOTES, 'UTF-8'); |
372
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} |
373
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$original_data = ''; |
374
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if ($mode == 'edit') { |
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$original_data = "<input name='item_original_name' " |
376
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. "type='hidden' value='{$item['item_original_name']}'>\n"; |
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} |
378
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$query = "SELECT `TABLE_NAME` FROM `INFORMATION_SCHEMA`.`TABLES` "; |
379
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$query .= "WHERE `TABLE_SCHEMA`='" . $this->dbi->escapeString($db) . "' "; |
380
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$query .= "AND `TABLE_TYPE` IN ('BASE TABLE', 'SYSTEM VERSIONED')"; |
381
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$tables = $this->dbi->fetchResult($query); |
382
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|
|
|
383
|
|
|
// Create the output |
384
|
|
|
$retval = ""; |
385
|
|
|
$retval .= "<!-- START " . $modeToUpper . " TRIGGER FORM -->\n\n"; |
386
|
|
|
$retval .= "<form class='rte_form' action='db_triggers.php' method='post'>\n"; |
387
|
|
|
$retval .= "<input name='{$mode}_item' type='hidden' value='1'>\n"; |
388
|
|
|
$retval .= $original_data; |
389
|
|
|
$retval .= Url::getHiddenInputs($db, $table) . "\n"; |
390
|
|
|
$retval .= "<fieldset>\n"; |
391
|
|
|
$retval .= "<legend>" . __('Details') . "</legend>\n"; |
392
|
|
|
$retval .= "<table class='rte_table'>\n"; |
393
|
|
|
$retval .= "<tr>\n"; |
394
|
|
|
$retval .= " <td>" . __('Trigger name') . "</td>\n"; |
395
|
|
|
$retval .= " <td><input type='text' name='item_name' maxlength='64'\n"; |
396
|
|
|
$retval .= " value='{$item['item_name']}'></td>\n"; |
397
|
|
|
$retval .= "</tr>\n"; |
398
|
|
|
$retval .= "<tr>\n"; |
399
|
|
|
$retval .= " <td>" . __('Table') . "</td>\n"; |
400
|
|
|
$retval .= " <td>\n"; |
401
|
|
|
$retval .= " <select name='item_table'>\n"; |
402
|
|
|
foreach ($tables as $key => $value) { |
403
|
|
|
$selected = ""; |
404
|
|
|
if ($mode == 'add' && $value == $table) { |
405
|
|
|
$selected = " selected='selected'"; |
406
|
|
|
} elseif ($mode == 'edit' && $value == $item['item_table']) { |
407
|
|
|
$selected = " selected='selected'"; |
408
|
|
|
} |
409
|
|
|
$retval .= "<option$selected>"; |
410
|
|
|
$retval .= htmlspecialchars($value); |
411
|
|
|
$retval .= "</option>\n"; |
412
|
|
|
} |
413
|
|
|
$retval .= " </select>\n"; |
414
|
|
|
$retval .= " </td>\n"; |
415
|
|
|
$retval .= "</tr>\n"; |
416
|
|
|
$retval .= "<tr>\n"; |
417
|
|
|
$retval .= " <td>" . _pgettext('Trigger action time', 'Time') . "</td>\n"; |
418
|
|
|
$retval .= " <td><select name='item_timing'>\n"; |
419
|
|
|
foreach ($action_timings as $key => $value) { |
420
|
|
|
$selected = ""; |
421
|
|
|
if (! empty($item['item_action_timing']) |
422
|
|
|
&& $item['item_action_timing'] == $value |
423
|
|
|
) { |
424
|
|
|
$selected = " selected='selected'"; |
425
|
|
|
} |
426
|
|
|
$retval .= "<option$selected>$value</option>"; |
427
|
|
|
} |
428
|
|
|
$retval .= " </select></td>\n"; |
429
|
|
|
$retval .= "</tr>\n"; |
430
|
|
|
$retval .= "<tr>\n"; |
431
|
|
|
$retval .= " <td>" . __('Event') . "</td>\n"; |
432
|
|
|
$retval .= " <td><select name='item_event'>\n"; |
433
|
|
|
foreach ($event_manipulations as $key => $value) { |
434
|
|
|
$selected = ""; |
435
|
|
|
if (! empty($item['item_event_manipulation']) |
436
|
|
|
&& $item['item_event_manipulation'] == $value |
437
|
|
|
) { |
438
|
|
|
$selected = " selected='selected'"; |
439
|
|
|
} |
440
|
|
|
$retval .= "<option$selected>$value</option>"; |
441
|
|
|
} |
442
|
|
|
$retval .= " </select></td>\n"; |
443
|
|
|
$retval .= "</tr>\n"; |
444
|
|
|
$retval .= "<tr>\n"; |
445
|
|
|
$retval .= " <td>" . __('Definition') . "</td>\n"; |
446
|
|
|
$retval .= " <td><textarea name='item_definition' rows='15' cols='40'>"; |
447
|
|
|
$retval .= $item['item_definition']; |
448
|
|
|
$retval .= "</textarea></td>\n"; |
449
|
|
|
$retval .= "</tr>\n"; |
450
|
|
|
$retval .= "<tr>\n"; |
451
|
|
|
$retval .= " <td>" . __('Definer') . "</td>\n"; |
452
|
|
|
$retval .= " <td><input type='text' name='item_definer'\n"; |
453
|
|
|
$retval .= " value='{$item['item_definer']}'></td>\n"; |
454
|
|
|
$retval .= "</tr>\n"; |
455
|
|
|
$retval .= "</table>\n"; |
456
|
|
|
$retval .= "</fieldset>\n"; |
457
|
|
|
if ($response->isAjax()) { |
458
|
|
|
$retval .= "<input type='hidden' name='editor_process_{$mode}'\n"; |
459
|
|
|
$retval .= " value='true'>\n"; |
460
|
|
|
$retval .= "<input type='hidden' name='ajax_request' value='true'>\n"; |
461
|
|
|
} else { |
462
|
|
|
$retval .= "<fieldset class='tblFooters'>\n"; |
463
|
|
|
$retval .= " <input type='submit' name='editor_process_{$mode}'\n"; |
464
|
|
|
$retval .= " value='" . __('Go') . "'>\n"; |
465
|
|
|
$retval .= "</fieldset>\n"; |
466
|
|
|
} |
467
|
|
|
$retval .= "</form>\n\n"; |
468
|
|
|
$retval .= "<!-- END " . $modeToUpper . " TRIGGER FORM -->\n\n"; |
469
|
|
|
|
470
|
|
|
return $retval; |
471
|
|
|
} |
472
|
|
|
|
473
|
|
|
/** |
474
|
|
|
* Composes the query necessary to create a trigger from an HTTP request. |
475
|
|
|
* |
476
|
|
|
* @return string The CREATE TRIGGER query. |
477
|
|
|
*/ |
478
|
|
|
public function getQueryFromRequest() |
479
|
|
|
{ |
480
|
|
|
global $db, $errors, $action_timings, $event_manipulations; |
481
|
|
|
|
482
|
|
|
$query = 'CREATE '; |
483
|
|
|
if (! empty($_POST['item_definer'])) { |
484
|
|
|
if (mb_strpos($_POST['item_definer'], '@') !== false |
485
|
|
|
) { |
486
|
|
|
$arr = explode('@', $_POST['item_definer']); |
487
|
|
|
$query .= 'DEFINER=' . Util::backquote($arr[0]); |
488
|
|
|
$query .= '@' . Util::backquote($arr[1]) . ' '; |
489
|
|
|
} else { |
490
|
|
|
$errors[] = __('The definer must be in the "username@hostname" format!'); |
491
|
|
|
} |
492
|
|
|
} |
493
|
|
|
$query .= 'TRIGGER '; |
494
|
|
|
if (! empty($_POST['item_name'])) { |
495
|
|
|
$query .= Util::backquote($_POST['item_name']) . ' '; |
|
|
|
|
496
|
|
|
} else { |
497
|
|
|
$errors[] = __('You must provide a trigger name!'); |
498
|
|
|
} |
499
|
|
|
if (! empty($_POST['item_timing']) |
500
|
|
|
&& in_array($_POST['item_timing'], $action_timings) |
501
|
|
|
) { |
502
|
|
|
$query .= $_POST['item_timing'] . ' '; |
503
|
|
|
} else { |
504
|
|
|
$errors[] = __('You must provide a valid timing for the trigger!'); |
505
|
|
|
} |
506
|
|
|
if (! empty($_POST['item_event']) |
507
|
|
|
&& in_array($_POST['item_event'], $event_manipulations) |
508
|
|
|
) { |
509
|
|
|
$query .= $_POST['item_event'] . ' '; |
510
|
|
|
} else { |
511
|
|
|
$errors[] = __('You must provide a valid event for the trigger!'); |
512
|
|
|
} |
513
|
|
|
$query .= 'ON '; |
514
|
|
|
if (! empty($_POST['item_table']) |
515
|
|
|
&& in_array($_POST['item_table'], $this->dbi->getTables($db)) |
516
|
|
|
) { |
517
|
|
|
$query .= Util::backquote($_POST['item_table']); |
518
|
|
|
} else { |
519
|
|
|
$errors[] = __('You must provide a valid table name!'); |
520
|
|
|
} |
521
|
|
|
$query .= ' FOR EACH ROW '; |
522
|
|
|
if (! empty($_POST['item_definition'])) { |
523
|
|
|
$query .= $_POST['item_definition']; |
524
|
|
|
} else { |
525
|
|
|
$errors[] = __('You must provide a trigger definition.'); |
526
|
|
|
} |
527
|
|
|
|
528
|
|
|
return $query; |
529
|
|
|
} |
530
|
|
|
} |
531
|
|
|
|
In general, usage of exit should be done with care and only when running in a scripting context like a CLI script.