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3151 changed files with 566766 additions and 48 deletions
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<?php
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declare(strict_types=1);
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namespace PhpMyAdmin\Controllers\Server;
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use PhpMyAdmin\Controllers\AbstractController;
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use PhpMyAdmin\DatabaseInterface;
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use PhpMyAdmin\Html\Generator;
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use PhpMyAdmin\Providers\ServerVariables\ServerVariablesProvider;
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use PhpMyAdmin\Response;
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use PhpMyAdmin\Template;
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use PhpMyAdmin\Url;
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use PhpMyAdmin\Util;
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use function header;
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use function htmlspecialchars;
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use function implode;
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use function in_array;
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use function is_numeric;
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use function mb_strtolower;
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use function pow;
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use function preg_match;
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use function str_replace;
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use function strtolower;
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use function trim;
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/**
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* Handles viewing and editing server variables
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*/
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class VariablesController extends AbstractController
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{
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/** @var DatabaseInterface */
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private $dbi;
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/**
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* @param Response $response
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* @param DatabaseInterface $dbi
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*/
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public function __construct($response, Template $template, $dbi)
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{
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parent::__construct($response, $template);
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$this->dbi = $dbi;
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}
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public function index(): void
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{
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global $err_url;
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$params = ['filter' => $_GET['filter'] ?? null];
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$err_url = Url::getFromRoute('/');
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if ($this->dbi->isSuperUser()) {
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$this->dbi->selectDb('mysql');
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}
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$filterValue = ! empty($params['filter']) ? $params['filter'] : '';
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$this->addScriptFiles(['server/variables.js']);
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$variables = [];
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$serverVarsResult = $this->dbi->tryQuery('SHOW SESSION VARIABLES;');
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if ($serverVarsResult !== false) {
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$serverVarsSession = [];
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while ($arr = $this->dbi->fetchRow($serverVarsResult)) {
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$serverVarsSession[$arr[0]] = $arr[1];
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}
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$this->dbi->freeResult($serverVarsResult);
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$serverVars = $this->dbi->fetchResult('SHOW GLOBAL VARIABLES;', 0, 1);
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// list of static (i.e. non-editable) system variables
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$staticVariables = ServerVariablesProvider::getImplementation()->getStaticVariables();
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foreach ($serverVars as $name => $value) {
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$hasSessionValue = isset($serverVarsSession[$name])
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&& $serverVarsSession[$name] !== $value;
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$docLink = Generator::linkToVarDocumentation(
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$name,
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$this->dbi->isMariaDB(),
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str_replace('_', ' ', $name)
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);
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[$formattedValue, $isEscaped] = $this->formatVariable($name, $value);
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if ($hasSessionValue) {
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[$sessionFormattedValue] = $this->formatVariable(
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$name,
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$serverVarsSession[$name]
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);
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}
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$variables[] = [
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'name' => $name,
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'is_editable' => ! in_array(strtolower($name), $staticVariables),
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'doc_link' => $docLink,
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'value' => $formattedValue,
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'is_escaped' => $isEscaped,
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'has_session_value' => $hasSessionValue,
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'session_value' => $sessionFormattedValue ?? null,
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];
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}
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}
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$this->render('server/variables/index', [
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'variables' => $variables,
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'filter_value' => $filterValue,
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'is_superuser' => $this->dbi->isSuperUser(),
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'is_mariadb' => $this->dbi->isMariaDB(),
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]);
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}
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/**
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* Handle the AJAX request for a single variable value
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*
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* @param array $params Request parameters
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*/
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public function getValue(array $params): void
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{
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if (! $this->response->isAjax()) {
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return;
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}
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// Send with correct charset
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header('Content-Type: text/html; charset=UTF-8');
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// Do not use double quotes inside the query to avoid a problem
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// when server is running in ANSI_QUOTES sql_mode
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$varValue = $this->dbi->fetchSingleRow(
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'SHOW GLOBAL VARIABLES WHERE Variable_name=\''
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. $this->dbi->escapeString($params['name']) . '\';',
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'NUM'
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);
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$json = [
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'message' => $varValue[1],
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];
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$variableType = ServerVariablesProvider::getImplementation()->getVariableType($params['name']);
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if ($variableType === 'byte') {
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$json['message'] = implode(
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' ',
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Util::formatByteDown($varValue[1], 3, 3)
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);
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}
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$this->response->addJSON($json);
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}
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/**
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* Handle the AJAX request for setting value for a single variable
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*
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* @param array $vars Request parameters
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*/
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public function setValue(array $vars): void
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{
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$params = [
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'varName' => $vars['name'],
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'varValue' => $_POST['varValue'] ?? null,
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];
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if (! $this->response->isAjax()) {
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return;
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}
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$value = (string) $params['varValue'];
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$variableName = (string) $params['varName'];
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$matches = [];
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$variableType = ServerVariablesProvider::getImplementation()->getVariableType($variableName);
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if ($variableType === 'byte' && preg_match(
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'/^\s*(\d+(\.\d+)?)\s*(mb|kb|mib|kib|gb|gib)\s*$/i',
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$value,
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$matches
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)) {
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$exp = [
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'kb' => 1,
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'kib' => 1,
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'mb' => 2,
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'mib' => 2,
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'gb' => 3,
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'gib' => 3,
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];
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$value = (float) $matches[1] * pow(
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1024,
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$exp[mb_strtolower($matches[3])]
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);
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} else {
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$value = $this->dbi->escapeString($value);
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}
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if (! is_numeric($value)) {
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$value = "'" . $value . "'";
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}
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$json = [];
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if (! preg_match('/[^a-zA-Z0-9_]+/', $params['varName'])
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&& $this->dbi->query(
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'SET GLOBAL ' . $params['varName'] . ' = ' . $value
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)
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) {
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// Some values are rounded down etc.
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$varValue = $this->dbi->fetchSingleRow(
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'SHOW GLOBAL VARIABLES WHERE Variable_name="'
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. $this->dbi->escapeString($params['varName'])
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. '";',
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'NUM'
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);
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[$formattedValue, $isHtmlFormatted] = $this->formatVariable(
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$params['varName'],
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$varValue[1]
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);
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if ($isHtmlFormatted === false) {
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$json['variable'] = htmlspecialchars($formattedValue);
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} else {
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$json['variable'] = $formattedValue;
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}
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} else {
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$this->response->setRequestStatus(false);
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$json['error'] = __('Setting variable failed');
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}
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$this->response->addJSON($json);
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}
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/**
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* Format Variable
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*
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* @param string $name variable name
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* @param int|string $value variable value
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*
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* @return array formatted string and bool if string is HTML formatted
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*/
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private function formatVariable($name, $value): array
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{
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$isHtmlFormatted = false;
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$formattedValue = $value;
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if (is_numeric($value)) {
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$variableType = ServerVariablesProvider::getImplementation()->getVariableType($name);
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if ($variableType === 'byte') {
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$isHtmlFormatted = true;
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$formattedValue = trim(
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$this->template->render(
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'server/variables/format_variable',
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[
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'valueTitle' => Util::formatNumber($value, 0),
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'value' => implode(' ', Util::formatByteDown($value, 3, 3)),
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]
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)
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);
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} else {
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$formattedValue = Util::formatNumber($value, 0);
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}
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}
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return [
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$formattedValue,
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$isHtmlFormatted,
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];
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}
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}
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