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Relation.php
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1833 lines (1621 loc) · 67.4 KB
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<?php
declare(strict_types=1);
namespace PhpMyAdmin\ConfigStorage;
use PhpMyAdmin\ConfigStorage\Features\PdfFeature;
use PhpMyAdmin\DatabaseInterface;
use PhpMyAdmin\Dbal\DatabaseName;
use PhpMyAdmin\Dbal\TableName;
use PhpMyAdmin\InternalRelations;
use PhpMyAdmin\SqlParser\Parser;
use PhpMyAdmin\SqlParser\Statements\CreateStatement;
use PhpMyAdmin\SqlParser\Utils\Table as TableUtils;
use PhpMyAdmin\Table;
use PhpMyAdmin\Util;
use PhpMyAdmin\Version;
use function __;
use function array_keys;
use function array_reverse;
use function array_search;
use function array_shift;
use function asort;
use function bin2hex;
use function count;
use function explode;
use function file_get_contents;
use function htmlspecialchars;
use function implode;
use function in_array;
use function is_array;
use function is_scalar;
use function is_string;
use function ksort;
use function mb_check_encoding;
use function mb_strlen;
use function mb_strtolower;
use function mb_strtoupper;
use function mb_substr;
use function natcasesort;
use function preg_match;
use function sprintf;
use function str_contains;
use function str_replace;
use function strlen;
use function trim;
use function uksort;
use function usort;
use const SQL_DIR;
/**
* Set of functions used with the relation and PDF feature
*/
class Relation
{
/** @var DatabaseInterface */
public $dbi;
/** @param DatabaseInterface $dbi */
public function __construct($dbi)
{
$this->dbi = $dbi;
}
public function getRelationParameters(): RelationParameters
{
$server = $GLOBALS['server'];
if (! isset($_SESSION['relation']) || ! is_array($_SESSION['relation'])) {
$_SESSION['relation'] = [];
}
if (
isset($_SESSION['relation'][$server]) && is_array($_SESSION['relation'][$server])
&& isset($_SESSION['relation'][$server]['version'])
&& $_SESSION['relation'][$server]['version'] === Version::VERSION
) {
return RelationParameters::fromArray($_SESSION['relation'][$server]);
}
$relationParameters = RelationParameters::fromArray($this->checkRelationsParam());
$_SESSION['relation'][$server] = $relationParameters->toArray();
return $relationParameters;
}
/**
* @param array<string, bool|string|null> $relationParams
*
* @return array<string, bool|string|null>
*/
private function checkTableAccess(array $relationParams): array
{
if (isset($relationParams['relation'], $relationParams['table_info'])) {
if ($this->canAccessStorageTable((string) $relationParams['table_info'])) {
$relationParams['displaywork'] = true;
}
}
if (isset($relationParams['table_coords'], $relationParams['pdf_pages'])) {
if ($this->canAccessStorageTable((string) $relationParams['table_coords'])) {
if ($this->canAccessStorageTable((string) $relationParams['pdf_pages'])) {
$relationParams['pdfwork'] = true;
}
}
}
if (isset($relationParams['column_info'])) {
if ($this->canAccessStorageTable((string) $relationParams['column_info'])) {
$relationParams['commwork'] = true;
// phpMyAdmin 4.3+
// Check for input transformations upgrade.
$relationParams['mimework'] = $this->tryUpgradeTransformations();
}
}
if (isset($relationParams['users'], $relationParams['usergroups'])) {
if ($this->canAccessStorageTable((string) $relationParams['users'])) {
if ($this->canAccessStorageTable((string) $relationParams['usergroups'])) {
$relationParams['menuswork'] = true;
}
}
}
$settings = [
'export_templates' => 'exporttemplateswork',
'designer_settings' => 'designersettingswork',
'central_columns' => 'centralcolumnswork',
'savedsearches' => 'savedsearcheswork',
'navigationhiding' => 'navwork',
'bookmark' => 'bookmarkwork',
'userconfig' => 'userconfigwork',
'tracking' => 'trackingwork',
'table_uiprefs' => 'uiprefswork',
'favorite' => 'favoritework',
'recent' => 'recentwork',
'history' => 'historywork',
'relation' => 'relwork',
];
foreach ($settings as $setingName => $worksKey) {
if (! isset($relationParams[$setingName])) {
continue;
}
if (! $this->canAccessStorageTable((string) $relationParams[$setingName])) {
continue;
}
$relationParams[$worksKey] = true;
}
return $relationParams;
}
/**
* @param array<string, bool|string|null> $relationParams
*
* @return array<string, bool|string|null>|null
*/
private function fillRelationParamsWithTableNames(array $relationParams): ?array
{
if ($this->arePmadbTablesAllDisabled()) {
return null;
}
$tabQuery = 'SHOW TABLES FROM '
. Util::backquote($GLOBALS['cfg']['Server']['pmadb']);
$tableRes = $this->dbi->tryQueryAsControlUser($tabQuery);
if ($tableRes === false) {
return null;
}
while ($currTable = $tableRes->fetchRow()) {
if ($currTable[0] == $GLOBALS['cfg']['Server']['bookmarktable']) {
$relationParams['bookmark'] = (string) $currTable[0];
} elseif ($currTable[0] == $GLOBALS['cfg']['Server']['relation']) {
$relationParams['relation'] = (string) $currTable[0];
} elseif ($currTable[0] == $GLOBALS['cfg']['Server']['table_info']) {
$relationParams['table_info'] = (string) $currTable[0];
} elseif ($currTable[0] == $GLOBALS['cfg']['Server']['table_coords']) {
$relationParams['table_coords'] = (string) $currTable[0];
} elseif ($currTable[0] == $GLOBALS['cfg']['Server']['column_info']) {
$relationParams['column_info'] = (string) $currTable[0];
} elseif ($currTable[0] == $GLOBALS['cfg']['Server']['pdf_pages']) {
$relationParams['pdf_pages'] = (string) $currTable[0];
} elseif ($currTable[0] == $GLOBALS['cfg']['Server']['history']) {
$relationParams['history'] = (string) $currTable[0];
} elseif ($currTable[0] == $GLOBALS['cfg']['Server']['recent']) {
$relationParams['recent'] = (string) $currTable[0];
} elseif ($currTable[0] == $GLOBALS['cfg']['Server']['favorite']) {
$relationParams['favorite'] = (string) $currTable[0];
} elseif ($currTable[0] == $GLOBALS['cfg']['Server']['table_uiprefs']) {
$relationParams['table_uiprefs'] = (string) $currTable[0];
} elseif ($currTable[0] == $GLOBALS['cfg']['Server']['tracking']) {
$relationParams['tracking'] = (string) $currTable[0];
} elseif ($currTable[0] == $GLOBALS['cfg']['Server']['userconfig']) {
$relationParams['userconfig'] = (string) $currTable[0];
} elseif ($currTable[0] == $GLOBALS['cfg']['Server']['users']) {
$relationParams['users'] = (string) $currTable[0];
} elseif ($currTable[0] == $GLOBALS['cfg']['Server']['usergroups']) {
$relationParams['usergroups'] = (string) $currTable[0];
} elseif ($currTable[0] == $GLOBALS['cfg']['Server']['navigationhiding']) {
$relationParams['navigationhiding'] = (string) $currTable[0];
} elseif ($currTable[0] == $GLOBALS['cfg']['Server']['savedsearches']) {
$relationParams['savedsearches'] = (string) $currTable[0];
} elseif ($currTable[0] == $GLOBALS['cfg']['Server']['central_columns']) {
$relationParams['central_columns'] = (string) $currTable[0];
} elseif ($currTable[0] == $GLOBALS['cfg']['Server']['designer_settings']) {
$relationParams['designer_settings'] = (string) $currTable[0];
} elseif ($currTable[0] == $GLOBALS['cfg']['Server']['export_templates']) {
$relationParams['export_templates'] = (string) $currTable[0];
}
}
return $relationParams;
}
/**
* Defines the relation parameters for the current user
* just a copy of the functions used for relations ;-)
* but added some stuff to check what will work
*
* @return array<string, bool|string|null> the relation parameters for the current user
*/
private function checkRelationsParam(): array
{
$relationParams = [];
$relationParams['version'] = Version::VERSION;
$workToTable = [
'relwork' => 'relation',
'displaywork' => [
'relation',
'table_info',
],
'bookmarkwork' => 'bookmarktable',
'pdfwork' => [
'table_coords',
'pdf_pages',
],
'commwork' => 'column_info',
'mimework' => 'column_info',
'historywork' => 'history',
'recentwork' => 'recent',
'favoritework' => 'favorite',
'uiprefswork' => 'table_uiprefs',
'trackingwork' => 'tracking',
'userconfigwork' => 'userconfig',
'menuswork' => [
'users',
'usergroups',
],
'navwork' => 'navigationhiding',
'savedsearcheswork' => 'savedsearches',
'centralcolumnswork' => 'central_columns',
'designersettingswork' => 'designer_settings',
'exporttemplateswork' => 'export_templates',
];
foreach (array_keys($workToTable) as $work) {
$relationParams[$work] = false;
}
$relationParams['allworks'] = false;
$relationParams['user'] = null;
$relationParams['db'] = null;
if (
$GLOBALS['server'] == 0
|| empty($GLOBALS['cfg']['Server']['pmadb'])
|| ! $this->dbi->selectDb($GLOBALS['cfg']['Server']['pmadb'], DatabaseInterface::CONNECT_CONTROL)
) {
// No server selected -> no bookmark table
// we return the array with the falses in it,
// to avoid some 'Uninitialized string offset' errors later
$GLOBALS['cfg']['Server']['pmadb'] = false;
return $relationParams;
}
$relationParams['user'] = $GLOBALS['cfg']['Server']['user'];
$relationParams['db'] = $GLOBALS['cfg']['Server']['pmadb'];
// Now I just check if all tables that i need are present so I can for
// example enable relations but not pdf...
// I was thinking of checking if they have all required columns but I
// fear it might be too slow
$relationParamsFilled = $this->fillRelationParamsWithTableNames($relationParams);
if ($relationParamsFilled === null) {
// query failed ... ?
//$GLOBALS['cfg']['Server']['pmadb'] = false;
return $relationParams;
}
// Filling did success
$relationParams = $relationParamsFilled;
$relationParams = $this->checkTableAccess($relationParams);
$allWorks = true;
foreach ($workToTable as $work => $table) {
if ($relationParams[$work]) {
continue;
}
if (is_string($table)) {
if (isset($GLOBALS['cfg']['Server'][$table]) && $GLOBALS['cfg']['Server'][$table] !== false) {
$allWorks = false;
break;
}
} else {
$oneNull = false;
foreach ($table as $t) {
if (isset($GLOBALS['cfg']['Server'][$t]) && $GLOBALS['cfg']['Server'][$t] === false) {
$oneNull = true;
break;
}
}
if (! $oneNull) {
$allWorks = false;
break;
}
}
}
$relationParams['allworks'] = $allWorks;
return $relationParams;
}
/**
* Check if the table is accessible
*
* @param string $tableDbName The table or table.db
*/
public function canAccessStorageTable(string $tableDbName): bool
{
$result = $this->dbi->tryQueryAsControlUser('SELECT NULL FROM ' . Util::backquote($tableDbName) . ' LIMIT 0');
return $result !== false;
}
/**
* Check whether column_info table input transformation
* upgrade is required and try to upgrade silently
*/
public function tryUpgradeTransformations(): bool
{
// From 4.3, new input oriented transformation feature was introduced.
// Check whether column_info table has input transformation columns
$new_cols = [
'input_transformation',
'input_transformation_options',
];
$query = 'SHOW COLUMNS FROM '
. Util::backquote($GLOBALS['cfg']['Server']['pmadb'])
. '.' . Util::backquote($GLOBALS['cfg']['Server']['column_info'])
. ' WHERE Field IN (\'' . implode('\', \'', $new_cols) . '\')';
$result = $this->dbi->tryQueryAsControlUser($query);
if ($result) {
$rows = $result->numRows();
unset($result);
// input transformations are present
// no need to upgrade
if ($rows === 2) {
return true;
// try silent upgrade without disturbing the user
}
// read upgrade query file
$query = @file_get_contents(SQL_DIR . 'upgrade_column_info_4_3_0+.sql');
// replace database name from query to with set in config.inc.php
// replace pma__column_info table name from query
// to with set in config.inc.php
$query = str_replace(
[
'`phpmyadmin`',
'`pma__column_info`',
],
[
Util::backquote($GLOBALS['cfg']['Server']['pmadb']),
Util::backquote($GLOBALS['cfg']['Server']['column_info']),
],
(string) $query
);
$this->dbi->tryMultiQuery($query, DatabaseInterface::CONNECT_CONTROL);
// skips result sets of query as we are not interested in it
do {
$hasResult = (
$this->dbi->moreResults(DatabaseInterface::CONNECT_CONTROL)
&& $this->dbi->nextResult(DatabaseInterface::CONNECT_CONTROL)
);
} while ($hasResult);
$error = $this->dbi->getError(DatabaseInterface::CONNECT_CONTROL);
// return true if no error exists otherwise false
return empty($error);
}
// some failure, either in upgrading or something else
// make some noise, time to wake up user.
return false;
}
/**
* Gets all Relations to foreign tables for a given table or
* optionally a given column in a table
*
* @param string $db the name of the db to check for
* @param string $table the name of the table to check for
* @param string $column the name of the column to check for
* @param string $source the source for foreign key information
*
* @return array db,table,column
*/
public function getForeigners($db, $table, $column = '', $source = 'both')
{
$relationFeature = $this->getRelationParameters()->relationFeature;
$foreign = [];
if ($relationFeature !== null && ($source === 'both' || $source === 'internal')) {
$rel_query = 'SELECT `master_field`, `foreign_db`, '
. '`foreign_table`, `foreign_field`'
. ' FROM ' . Util::backquote($relationFeature->database)
. '.' . Util::backquote($relationFeature->relation)
. ' WHERE `master_db` = \'' . $this->dbi->escapeString($db) . '\''
. ' AND `master_table` = \'' . $this->dbi->escapeString($table) . '\'';
if (strlen($column) > 0) {
$rel_query .= ' AND `master_field` = '
. '\'' . $this->dbi->escapeString($column) . '\'';
}
$foreign = $this->dbi->fetchResult($rel_query, 'master_field', null, DatabaseInterface::CONNECT_CONTROL);
}
if (($source === 'both' || $source === 'foreign') && strlen($table) > 0) {
$tableObj = new Table($table, $db);
$show_create_table = $tableObj->showCreate();
if ($show_create_table !== '') {
$parser = new Parser($show_create_table);
$stmt = $parser->statements[0];
$foreign['foreign_keys_data'] = [];
if ($stmt instanceof CreateStatement) {
$foreign['foreign_keys_data'] = TableUtils::getForeignKeys($stmt);
}
}
}
/**
* Emulating relations for some information_schema tables
*/
$isInformationSchema = mb_strtolower($db) === 'information_schema';
$isMysql = mb_strtolower($db) === 'mysql';
if (($isInformationSchema || $isMysql) && ($source === 'internal' || $source === 'both')) {
if ($isInformationSchema) {
$internalRelations = InternalRelations::getInformationSchema();
} else {
$internalRelations = InternalRelations::getMySql();
}
if (isset($internalRelations[$table])) {
foreach ($internalRelations[$table] as $field => $relations) {
if (
(strlen($column) !== 0 && $column != $field)
|| (isset($foreign[$field])
&& strlen($foreign[$field]) !== 0)
) {
continue;
}
$foreign[$field] = $relations;
}
}
}
return $foreign;
}
/**
* Gets the display field of a table
*
* @param string $db the name of the db to check for
* @param string $table the name of the table to check for
*
* @return string|false field name or false
*/
public function getDisplayField($db, $table)
{
$displayFeature = $this->getRelationParameters()->displayFeature;
/**
* Try to fetch the display field from DB.
*/
if ($displayFeature !== null) {
$disp_query = 'SELECT `display_field`'
. ' FROM ' . Util::backquote($displayFeature->database)
. '.' . Util::backquote($displayFeature->tableInfo)
. ' WHERE `db_name` = \'' . $this->dbi->escapeString((string) $db) . '\''
. ' AND `table_name` = \'' . $this->dbi->escapeString((string) $table) . '\'';
$row = $this->dbi->fetchSingleRow(
$disp_query,
DatabaseInterface::FETCH_ASSOC,
DatabaseInterface::CONNECT_CONTROL
);
if (isset($row['display_field'])) {
return $row['display_field'];
}
}
/**
* Emulating the display field for some information_schema tables.
*/
if ($db === 'information_schema') {
switch ($table) {
case 'CHARACTER_SETS':
return 'DESCRIPTION';
case 'TABLES':
return 'TABLE_COMMENT';
}
}
/**
* Pick first char field
*/
$columns = $this->dbi->getColumnsFull($db, $table);
foreach ($columns as $column) {
if ($this->dbi->types->getTypeClass($column['DATA_TYPE']) === 'CHAR') {
return $column['COLUMN_NAME'];
}
}
return false;
}
/**
* Gets the comments for all columns of a table or the db itself
*
* @param string $db the name of the db to check for
* @param string $table the name of the table to check for
*
* @return array [column_name] = comment
*/
public function getComments($db, $table = ''): array
{
if ($table === '') {
return [$this->getDbComment($db)];
}
$comments = [];
// MySQL native column comments
$columns = $this->dbi->getColumns($db, $table, true);
foreach ($columns as $column) {
if (empty($column['Comment'])) {
continue;
}
$comments[$column['Field']] = $column['Comment'];
}
return $comments;
}
/**
* Gets the comment for a db
*
* @param string $db the name of the db to check for
*/
public function getDbComment(string $db): string
{
$columnCommentsFeature = $this->getRelationParameters()->columnCommentsFeature;
if ($columnCommentsFeature !== null) {
// pmadb internal db comment
$com_qry = 'SELECT `comment`'
. ' FROM ' . Util::backquote($columnCommentsFeature->database)
. '.' . Util::backquote($columnCommentsFeature->columnInfo)
. ' WHERE db_name = \'' . $this->dbi->escapeString($db) . '\''
. ' AND table_name = \'\''
. ' AND column_name = \'(db_comment)\'';
$com_rs = $this->dbi->tryQueryAsControlUser($com_qry);
if ($com_rs && $com_rs->numRows() > 0) {
$row = $com_rs->fetchAssoc();
return (string) $row['comment'];
}
}
return '';
}
/**
* Gets the comment for a db
*
* @return array comments
*/
public function getDbComments()
{
$columnCommentsFeature = $this->getRelationParameters()->columnCommentsFeature;
if ($columnCommentsFeature !== null) {
// pmadb internal db comment
$com_qry = 'SELECT `db_name`, `comment`'
. ' FROM ' . Util::backquote($columnCommentsFeature->database)
. '.' . Util::backquote($columnCommentsFeature->columnInfo)
. ' WHERE `column_name` = \'(db_comment)\'';
$com_rs = $this->dbi->tryQueryAsControlUser($com_qry);
if ($com_rs && $com_rs->numRows() > 0) {
return $com_rs->fetchAllKeyPair();
}
}
return [];
}
/**
* Set a database comment to a certain value.
*
* @param string $db the name of the db
* @param string $comment the value of the column
*/
public function setDbComment($db, $comment = ''): bool
{
$columnCommentsFeature = $this->getRelationParameters()->columnCommentsFeature;
if ($columnCommentsFeature === null) {
return false;
}
if (strlen($comment) > 0) {
$upd_query = 'INSERT INTO '
. Util::backquote($columnCommentsFeature->database) . '.'
. Util::backquote($columnCommentsFeature->columnInfo)
. ' (`db_name`, `table_name`, `column_name`, `comment`)'
. ' VALUES (\''
. $this->dbi->escapeString($db)
. "', '', '(db_comment)', '"
. $this->dbi->escapeString($comment)
. "') "
. ' ON DUPLICATE KEY UPDATE '
. "`comment` = '" . $this->dbi->escapeString($comment) . "'";
} else {
$upd_query = 'DELETE FROM '
. Util::backquote($columnCommentsFeature->database) . '.'
. Util::backquote($columnCommentsFeature->columnInfo)
. ' WHERE `db_name` = \'' . $this->dbi->escapeString($db)
. '\'
AND `table_name` = \'\'
AND `column_name` = \'(db_comment)\'';
}
return (bool) $this->dbi->queryAsControlUser($upd_query);
}
/**
* Set a SQL history entry
*
* @param string $db the name of the db
* @param string $table the name of the table
* @param string $username the username
* @param string $sqlquery the sql query
*/
public function setHistory($db, $table, $username, $sqlquery): void
{
$maxCharactersInDisplayedSQL = $GLOBALS['cfg']['MaxCharactersInDisplayedSQL'];
// Prevent to run this automatically on Footer class destroying in testsuite
if (mb_strlen($sqlquery) > $maxCharactersInDisplayedSQL) {
return;
}
$sqlHistoryFeature = $this->getRelationParameters()->sqlHistoryFeature;
if (! isset($_SESSION['sql_history'])) {
$_SESSION['sql_history'] = [];
}
$_SESSION['sql_history'][] = [
'db' => $db,
'table' => $table,
'sqlquery' => $sqlquery,
];
if (count($_SESSION['sql_history']) > $GLOBALS['cfg']['QueryHistoryMax']) {
// history should not exceed a maximum count
array_shift($_SESSION['sql_history']);
}
if ($sqlHistoryFeature === null || ! $GLOBALS['cfg']['QueryHistoryDB']) {
return;
}
$this->dbi->queryAsControlUser(
'INSERT INTO '
. Util::backquote($sqlHistoryFeature->database) . '.'
. Util::backquote($sqlHistoryFeature->history) . '
(`username`,
`db`,
`table`,
`timevalue`,
`sqlquery`)
VALUES
(\'' . $this->dbi->escapeString($username) . '\',
\'' . $this->dbi->escapeString($db) . '\',
\'' . $this->dbi->escapeString($table) . '\',
NOW(),
\'' . $this->dbi->escapeString($sqlquery) . '\')'
);
$this->purgeHistory($username);
}
/**
* Gets a SQL history entry
*
* @param string $username the username
*
* @return array|bool list of history items
*/
public function getHistory($username)
{
$sqlHistoryFeature = $this->getRelationParameters()->sqlHistoryFeature;
if ($sqlHistoryFeature === null) {
return false;
}
/**
* if db-based history is disabled but there exists a session-based
* history, use it
*/
if (! $GLOBALS['cfg']['QueryHistoryDB']) {
if (isset($_SESSION['sql_history'])) {
return array_reverse($_SESSION['sql_history']);
}
return false;
}
$hist_query = '
SELECT `db`,
`table`,
`sqlquery`,
`timevalue`
FROM ' . Util::backquote($sqlHistoryFeature->database)
. '.' . Util::backquote($sqlHistoryFeature->history) . '
WHERE `username` = \'' . $this->dbi->escapeString($username) . '\'
ORDER BY `id` DESC';
return $this->dbi->fetchResult($hist_query, null, null, DatabaseInterface::CONNECT_CONTROL);
}
/**
* purges SQL history
*
* deletes entries that exceeds $cfg['QueryHistoryMax'], oldest first, for the
* given user
*
* @param string $username the username
*/
public function purgeHistory($username): void
{
$sqlHistoryFeature = $this->getRelationParameters()->sqlHistoryFeature;
if (! $GLOBALS['cfg']['QueryHistoryDB'] || $sqlHistoryFeature === null) {
return;
}
$search_query = '
SELECT `timevalue`
FROM ' . Util::backquote($sqlHistoryFeature->database)
. '.' . Util::backquote($sqlHistoryFeature->history) . '
WHERE `username` = \'' . $this->dbi->escapeString($username) . '\'
ORDER BY `timevalue` DESC
LIMIT ' . $GLOBALS['cfg']['QueryHistoryMax'] . ', 1';
$max_time = $this->dbi->fetchValue($search_query, 0, DatabaseInterface::CONNECT_CONTROL);
if (! $max_time) {
return;
}
$this->dbi->queryAsControlUser(
'DELETE FROM '
. Util::backquote($sqlHistoryFeature->database) . '.'
. Util::backquote($sqlHistoryFeature->history) . '
WHERE `username` = \'' . $this->dbi->escapeString($username)
. '\'
AND `timevalue` <= \'' . $max_time . '\''
);
}
/**
* Prepares the dropdown for one mode
*
* @param array $foreign the keys and values for foreigns
* @param string $data the current data of the dropdown
* @param string $mode the needed mode
*
* @return string[] the <option value=""><option>s
*/
public function buildForeignDropdown(array $foreign, $data, $mode): array
{
$reloptions = [];
// id-only is a special mode used when no foreign display column
// is available
if ($mode === 'id-content' || $mode === 'id-only') {
// sort for id-content
if ($GLOBALS['cfg']['NaturalOrder']) {
uksort($foreign, 'strnatcasecmp');
} else {
ksort($foreign);
}
} elseif ($mode === 'content-id') {
// sort for content-id
if ($GLOBALS['cfg']['NaturalOrder']) {
natcasesort($foreign);
} else {
asort($foreign);
}
}
foreach ($foreign as $key => $value) {
$key = (string) $key;
$value = (string) $value;
$data = (string) $data;
if (mb_check_encoding($key, 'utf-8') && ! preg_match('/[\x00-\x08\x0B\x0C\x0E-\x1F\x80-\x9F]/u', $key)) {
$selected = ($key == $data);
// show as text if it's valid utf-8
$key = htmlspecialchars($key);
} else {
$key = '0x' . bin2hex($key);
if (str_contains($data, '0x')) {
$selected = ($key == trim($data));
} else {
$selected = ($key == '0x' . $data);
}
}
if (
mb_check_encoding($value, 'utf-8')
&& ! preg_match('/[\x00-\x08\x0B\x0C\x0E-\x1F\x80-\x9F]/u', $value)
) {
if (mb_strlen($value) <= $GLOBALS['cfg']['LimitChars']) {
// show as text if it's valid utf-8
$value = htmlspecialchars($value);
} else {
// show as truncated text if it's valid utf-8
$value = htmlspecialchars(
mb_substr(
$value,
0,
(int) $GLOBALS['cfg']['LimitChars']
) . '...'
);
}
} else {
$value = '0x' . bin2hex($value);
}
$reloption = '<option value="' . $key . '"';
if ($selected) {
$reloption .= ' selected="selected"';
}
if ($mode === 'content-id') {
$reloptions[] = $reloption . '>'
. $value . ' - ' . $key . '</option>';
} elseif ($mode === 'id-content') {
$reloptions[] = $reloption . '>'
. $key . ' - ' . $value . '</option>';
} elseif ($mode === 'id-only') {
$reloptions[] = $reloption . '>'
. $key . '</option>';
}
}
return $reloptions;
}
/**
* Outputs dropdown with values of foreign fields
*
* @param array[] $disp_row array of the displayed row
* @param string $foreign_field the foreign field
* @param string $foreign_display the foreign field to display
* @param string $data the current data of the dropdown (field in row)
* @param int|null $max maximum number of items in the dropdown
*
* @return string the <option value=""><option>s
*/
public function foreignDropdown(
array $disp_row,
$foreign_field,
string $foreign_display,
$data,
$max = null
): string {
if ($max === null) {
$max = $GLOBALS['cfg']['ForeignKeyMaxLimit'];
}
$foreign = [];
// collect the data
foreach ($disp_row as $relrow) {
$key = $relrow[$foreign_field];
// if the display field has been defined for this foreign table
if ($foreign_display) {
$value = $relrow[$foreign_display];
} else {
$value = '';
}
$foreign[$key] = $value;
}
// put the dropdown sections in correct order
$top = [];
$bottom = [];
if ($foreign_display) {
if (
isset($GLOBALS['cfg']['ForeignKeyDropdownOrder'])
&& is_array($GLOBALS['cfg']['ForeignKeyDropdownOrder'])
) {
if (
isset($GLOBALS['cfg']['ForeignKeyDropdownOrder'][0])
&& is_scalar($GLOBALS['cfg']['ForeignKeyDropdownOrder'][0])
&& strlen((string) $GLOBALS['cfg']['ForeignKeyDropdownOrder'][0]) > 0
) {
$top = $this->buildForeignDropdown(
$foreign,
$data,
(string) $GLOBALS['cfg']['ForeignKeyDropdownOrder'][0]
);
}
if (
isset($GLOBALS['cfg']['ForeignKeyDropdownOrder'][1])
&& is_scalar($GLOBALS['cfg']['ForeignKeyDropdownOrder'][1])
&& strlen((string) $GLOBALS['cfg']['ForeignKeyDropdownOrder'][1]) > 0
) {
$bottom = $this->buildForeignDropdown(
$foreign,
$data,
(string) $GLOBALS['cfg']['ForeignKeyDropdownOrder'][1]
);
}
} else {
$top = $this->buildForeignDropdown($foreign, $data, 'id-content');
$bottom = $this->buildForeignDropdown($foreign, $data, 'content-id');
}
} else {
$top = $this->buildForeignDropdown($foreign, $data, 'id-only');
}
// beginning of dropdown
$ret = '<option value=""> </option>';
$top_count = count($top);
if ($max == -1 || $top_count < $max) {
$ret .= implode('', $top);
if ($foreign_display && $top_count > 0) {
// this empty option is to visually mark the beginning of the
// second series of values (bottom)
$ret .= '<option value=""> </option>';
}
}
if ($foreign_display) {
$ret .= implode('', $bottom);
}
return $ret;
}
/**
* Gets foreign keys in preparation for a drop-down selector
*
* @param array|bool $foreigners array of the foreign keys
* @param string $field the foreign field name
* @param bool $override_total whether to override the total
* @param string $foreign_filter a possible filter
* @param string $foreign_limit a possible LIMIT clause
* @param bool $get_total optional, whether to get total num of rows
* in $foreignData['the_total;]
* (has an effect of performance)
*
* @return array<string, mixed> data about the foreign keys
* @psalm-return array{