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<?php
declare(strict_types=1);
namespace PhpMyAdmin\Controllers\Table;
use PhpMyAdmin\Core;
use PhpMyAdmin\DatabaseInterface;
use PhpMyAdmin\Html\Generator;
use PhpMyAdmin\Index;
use PhpMyAdmin\Relation;
use PhpMyAdmin\Response;
use PhpMyAdmin\Table;
use PhpMyAdmin\Template;
use PhpMyAdmin\Util;
use function array_key_exists;
use function array_keys;
use function array_values;
use function htmlspecialchars;
use function mb_strtoupper;
use function md5;
use function strtoupper;
use function uksort;
use function usort;
/**
* Display table relations for viewing and editing.
*
* Includes phpMyAdmin relations and InnoDB relations.
*/
final class RelationController extends AbstractController
{
/** @var Relation */
private $relation;
/** @var DatabaseInterface */
private $dbi;
/**
* @param Response $response
* @param string $db Database name
* @param string $table Table name
* @param DatabaseInterface $dbi
*/
public function __construct(
$response,
Template $template,
$db,
$table,
Relation $relation,
$dbi
) {
parent::__construct($response, $template, $db, $table);
$this->relation = $relation;
$this->dbi = $dbi;
}
/**
* Index
*/
public function index(): void
{
global $route;
$options = [
'CASCADE' => 'CASCADE',
'SET_NULL' => 'SET NULL',
'NO_ACTION' => 'NO ACTION',
'RESTRICT' => 'RESTRICT',
];
$table = $this->dbi->getTable($this->db, $this->table);
$storageEngine = mb_strtoupper((string) $table->getStatusInfo('Engine'));
$cfgRelation = $this->relation->getRelationsParam();
$relations = [];
if ($cfgRelation['relwork']) {
$relations = $this->relation->getForeigners(
$this->db,
$this->table,
'',
'internal'
);
}
$relationsForeign = [];
if (Util::isForeignKeySupported($storageEngine)) {
$relationsForeign = $this->relation->getForeigners(
$this->db,
$this->table,
'',
'foreign'
);
}
// Send table of column names to populate corresponding dropdowns depending
// on the current selection
if (isset($_POST['getDropdownValues'])
&& $_POST['getDropdownValues'] === 'true'
) {
// if both db and table are selected
if (isset($_POST['foreignTable'])) {
$this->getDropdownValueForTable();
} else { // if only the db is selected
$this->getDropdownValueForDatabase($storageEngine);
}
return;
}
$this->addScriptFiles(['table/relation.js', 'indexes.js']);
// Set the database
$this->dbi->selectDb($this->db);
// updates for Internal relations
if (isset($_POST['destination_db']) && $cfgRelation['relwork']) {
$this->updateForInternalRelation($table, $cfgRelation, $relations);
}
// updates for foreign keys
$this->updateForForeignKeys($table, $options, $relationsForeign);
// Updates for display field
if ($cfgRelation['displaywork'] && isset($_POST['display_field'])) {
$this->updateForDisplayField($table, $cfgRelation);
}
// If we did an update, refresh our data
if (isset($_POST['destination_db']) && $cfgRelation['relwork']) {
$relations = $this->relation->getForeigners(
$this->db,
$this->table,
'',
'internal'
);
}
if (isset($_POST['destination_foreign_db'])
&& Util::isForeignKeySupported($storageEngine)
) {
$relationsForeign = $this->relation->getForeigners(
$this->db,
$this->table,
'',
'foreign'
);
}
/**
* Dialog
*/
// Now find out the columns of our $table
// need to use DatabaseInterface::QUERY_STORE with $this->dbi->numRows()
// in mysqli
$columns = $this->dbi->getColumns($this->db, $this->table);
$column_array = [];
$column_hash_array = [];
$column_array[''] = '';
foreach ($columns as $column) {
if (strtoupper($storageEngine) !== 'INNODB'
&& empty($column['Key'])
) {
continue;
}
$column_array[$column['Field']] = $column['Field'];
$column_hash_array[$column['Field']] = md5($column['Field']);
}
if ($GLOBALS['cfg']['NaturalOrder']) {
uksort($column_array, 'strnatcasecmp');
}
// common form
$engine = $this->dbi->getTable($this->db, $this->table)->getStorageEngine();
$this->render('table/relation/common_form', [
'is_foreign_key_supported' => Util::isForeignKeySupported($engine),
'db' => $this->db,
'table' => $this->table,
'cfg_relation' => $cfgRelation,
'tbl_storage_engine' => $storageEngine,
'existrel' => $relations,
'existrel_foreign' => array_key_exists('foreign_keys_data', $relationsForeign)
? $relationsForeign['foreign_keys_data']
: [],
'options_array' => $options,
'column_array' => $column_array,
'column_hash_array' => $column_hash_array,
'save_row' => array_values($columns),
'url_params' => $GLOBALS['url_params'],
'databases' => $GLOBALS['dblist']->databases,
'dbi' => $this->dbi,
'default_sliders_state' => $GLOBALS['cfg']['InitialSlidersState'],
'route' => $route,
]);
}
/**
* Update for display field
*
* @param Table $table table
* @param array $cfgRelation relation parameters
*/
private function updateForDisplayField(Table $table, array $cfgRelation): void
{
if (! $table->updateDisplayField(
$_POST['display_field'],
$cfgRelation
)) {
return;
}
$this->response->addHTML(
Generator::getMessage(
__('Display column was successfully updated.'),
'',
'success'
)
);
}
/**
* Update for FK
*
* @param Table $table Table
* @param array $options Options
* @param array $relationsForeign External relations
*/
private function updateForForeignKeys(Table $table, array $options, array $relationsForeign): void
{
$multi_edit_columns_name = $_POST['foreign_key_fields_name'] ?? null;
$preview_sql_data = '';
$seen_error = false;
// (for now, one index name only; we keep the definitions if the
// foreign db is not the same)
if (isset($_POST['destination_foreign_db'], $_POST['destination_foreign_table'])
&& isset($_POST['destination_foreign_column'])) {
[
$html,
$preview_sql_data,
$display_query,
$seen_error,
] = $table->updateForeignKeys(
$_POST['destination_foreign_db'],
$multi_edit_columns_name,
$_POST['destination_foreign_table'],
$_POST['destination_foreign_column'],
$options,
$this->table,
array_key_exists('foreign_keys_data', $relationsForeign)
? $relationsForeign['foreign_keys_data']
: []
);
$this->response->addHTML($html);
}
// If there is a request for SQL previewing.
if (isset($_POST['preview_sql'])) {
Core::previewSQL($preview_sql_data);
exit;
}
if (empty($display_query) || $seen_error) {
return;
}
$GLOBALS['display_query'] = $display_query;
$this->response->addHTML(
Generator::getMessage(
__('Your SQL query has been executed successfully.'),
null,
'success'
)
);
}
/**
* Update for internal relation
*
* @param Table $table Table
* @param array $cfgRelation Relation parameters
* @param array $relations Relations
*/
private function updateForInternalRelation(Table $table, array $cfgRelation, array $relations): void
{
$multi_edit_columns_name = $_POST['fields_name'] ?? null;
if (! $table->updateInternalRelations(
$multi_edit_columns_name,
$_POST['destination_db'],
$_POST['destination_table'],
$_POST['destination_column'],
$cfgRelation,
$relations
)) {
return;
}
$this->response->addHTML(
Generator::getMessage(
__('Internal relationships were successfully updated.'),
'',
'success'
)
);
}
/**
* Send table columns for foreign table dropdown
*/
public function getDropdownValueForTable(): void
{
$foreignTable = $_POST['foreignTable'];
$table_obj = $this->dbi->getTable($_POST['foreignDb'], $foreignTable);
// Since views do not have keys defined on them provide the full list of
// columns
if ($table_obj->isView()) {
$columnList = $table_obj->getColumns(false, false);
} else {
$columnList = $table_obj->getIndexedColumns(false, false);
}
$columns = [];
foreach ($columnList as $column) {
$columns[] = htmlspecialchars($column);
}
if ($GLOBALS['cfg']['NaturalOrder']) {
usort($columns, 'strnatcasecmp');
}
$this->response->addJSON('columns', $columns);
// @todo should be: $server->db($db)->table($table)->primary()
$primary = Index::getPrimary($foreignTable, $_POST['foreignDb']);
if ($primary === false) {
return;
}
$this->response->addJSON('primary', array_keys($primary->getColumns()));
}
/**
* Send database selection values for dropdown
*
* @param string $storageEngine Storage engine.
*/
public function getDropdownValueForDatabase(string $storageEngine): void
{
$tables = [];
$foreign = isset($_POST['foreign']) && $_POST['foreign'] === 'true';
if ($foreign) {
$query = 'SHOW TABLE STATUS FROM '
. Util::backquote($_POST['foreignDb']);
$tables_rs = $this->dbi->query(
$query,
DatabaseInterface::CONNECT_USER,
DatabaseInterface::QUERY_STORE
);
while ($row = $this->dbi->fetchArray($tables_rs)) {
if (! isset($row['Engine'])
|| mb_strtoupper($row['Engine']) != $storageEngine
) {
continue;
}
$tables[] = htmlspecialchars($row['Name']);
}
} else {
$query = 'SHOW TABLES FROM '
. Util::backquote($_POST['foreignDb']);
$tables_rs = $this->dbi->query(
$query,
DatabaseInterface::CONNECT_USER,
DatabaseInterface::QUERY_STORE
);
while ($row = $this->dbi->fetchArray($tables_rs)) {
$tables[] = htmlspecialchars($row[0]);
}
}
if ($GLOBALS['cfg']['NaturalOrder']) {
usort($tables, 'strnatcasecmp');
}
$this->response->addJSON('tables', $tables);
}
}