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<?php
/**
* Used to render the header of PMA's pages
*/
declare(strict_types=1);
namespace PhpMyAdmin;
use PhpMyAdmin\Html\Generator;
use PhpMyAdmin\Navigation\Navigation;
use function defined;
use function gmdate;
use function header;
use function htmlspecialchars;
use function implode;
use function ini_get;
use function is_bool;
use function strlen;
use function strtolower;
use function urlencode;
/**
* Class used to output the HTTP and HTML headers
*/
class Header
{
/**
* Scripts instance
*
* @access private
* @var Scripts
*/
private $scripts;
/**
* PhpMyAdmin\Console instance
*
* @access private
* @var Console
*/
private $console;
/**
* Menu instance
*
* @access private
* @var Menu
*/
private $menu;
/**
* Whether to offer the option of importing user settings
*
* @access private
* @var bool
*/
private $userprefsOfferImport;
/**
* The page title
*
* @access private
* @var string
*/
private $title;
/**
* The value for the id attribute for the body tag
*
* @access private
* @var string
*/
private $bodyId;
/**
* Whether to show the top menu
*
* @access private
* @var bool
*/
private $menuEnabled;
/**
* Whether to show the warnings
*
* @access private
* @var bool
*/
private $warningsEnabled;
/**
* Whether the page is in 'print view' mode
*
* @access private
* @var bool
*/
private $isPrintView;
/**
* Whether we are servicing an ajax request.
*
* @access private
* @var bool
*/
private $isAjax;
/**
* Whether to display anything
*
* @access private
* @var bool
*/
private $isEnabled;
/**
* Whether the HTTP headers (and possibly some HTML)
* have already been sent to the browser
*
* @access private
* @var bool
*/
private $headerIsSent;
/** @var UserPreferences */
private $userPreferences;
/** @var Template */
private $template;
/**
* Creates a new class instance
*/
public function __construct()
{
global $db, $table;
$this->template = new Template();
$this->isEnabled = true;
$this->isAjax = false;
$this->bodyId = '';
$this->title = '';
$this->console = new Console();
$this->menu = new Menu(
$db ?? '',
$table ?? ''
);
$this->menuEnabled = true;
$this->warningsEnabled = true;
$this->isPrintView = false;
$this->scripts = new Scripts();
$this->addDefaultScripts();
$this->headerIsSent = false;
// if database storage for user preferences is transient,
// offer to load exported settings from localStorage
// (detection will be done in JavaScript)
$this->userprefsOfferImport = false;
if ($GLOBALS['PMA_Config']->get('user_preferences') === 'session'
&& ! isset($_SESSION['userprefs_autoload'])
) {
$this->userprefsOfferImport = true;
}
$this->userPreferences = new UserPreferences();
}
/**
* Loads common scripts
*/
private function addDefaultScripts(): void
{
// Localised strings
$this->scripts->addFile('vendor/jquery/jquery.min.js');
$this->scripts->addFile('vendor/jquery/jquery-migrate.js');
$this->scripts->addFile('vendor/sprintf.js');
$this->scripts->addFile('ajax.js');
$this->scripts->addFile('keyhandler.js');
$this->scripts->addFile('vendor/bootstrap/bootstrap.bundle.min.js');
$this->scripts->addFile('vendor/jquery/jquery-ui.min.js');
$this->scripts->addFile('vendor/js.cookie.js');
$this->scripts->addFile('vendor/jquery/jquery.mousewheel.js');
$this->scripts->addFile('vendor/jquery/jquery.validate.js');
$this->scripts->addFile('vendor/jquery/jquery-ui-timepicker-addon.js');
$this->scripts->addFile('vendor/jquery/jquery.ba-hashchange-2.0.js');
$this->scripts->addFile('vendor/jquery/jquery.debounce-1.0.6.js');
$this->scripts->addFile('menu_resizer.js');
// Cross-framing protection
if ($GLOBALS['cfg']['AllowThirdPartyFraming'] === false) {
$this->scripts->addFile('cross_framing_protection.js');
}
$this->scripts->addFile('rte.js');
if ($GLOBALS['cfg']['SendErrorReports'] !== 'never') {
$this->scripts->addFile('vendor/tracekit.js');
$this->scripts->addFile('error_report.js');
}
// Here would not be a good place to add CodeMirror because
// the user preferences have not been merged at this point
$this->scripts->addFile('messages.php', ['l' => $GLOBALS['lang']]);
$this->scripts->addCode($this->getVariablesForJavaScript());
$this->scripts->addFile('config.js');
$this->scripts->addFile('doclinks.js');
$this->scripts->addFile('functions.js');
$this->scripts->addFile('navigation.js');
$this->scripts->addFile('indexes.js');
$this->scripts->addFile('common.js');
$this->scripts->addFile('page_settings.js');
if ($GLOBALS['cfg']['enable_drag_drop_import'] === true) {
$this->scripts->addFile('drag_drop_import.js');
}
if (! $GLOBALS['PMA_Config']->get('DisableShortcutKeys')) {
$this->scripts->addFile('shortcuts_handler.js');
}
$this->scripts->addCode($this->getJsParamsCode());
}
/**
* Returns, as an array, a list of parameters
* used on the client side
*
* @return array
*/
public function getJsParams(): array
{
global $db, $table, $dbi;
$pftext = $_SESSION['tmpval']['pftext'] ?? '';
$params = [
// Do not add any separator, JS code will decide
'common_query' => Url::getCommonRaw([], ''),
'opendb_url' => Util::getScriptNameForOption(
$GLOBALS['cfg']['DefaultTabDatabase'],
'database'
),
'lang' => $GLOBALS['lang'],
'server' => $GLOBALS['server'],
'table' => $table ?? '',
'db' => $db ?? '',
'token' => $_SESSION[' PMA_token '],
'text_dir' => $GLOBALS['text_dir'],
'show_databases_navigation_as_tree' => $GLOBALS['cfg']['ShowDatabasesNavigationAsTree'],
'pma_text_default_tab' => Util::getTitleForTarget(
$GLOBALS['cfg']['DefaultTabTable']
),
'pma_text_left_default_tab' => Util::getTitleForTarget(
$GLOBALS['cfg']['NavigationTreeDefaultTabTable']
),
'pma_text_left_default_tab2' => Util::getTitleForTarget(
$GLOBALS['cfg']['NavigationTreeDefaultTabTable2']
),
'LimitChars' => $GLOBALS['cfg']['LimitChars'],
'pftext' => $pftext,
'confirm' => $GLOBALS['cfg']['Confirm'],
'LoginCookieValidity' => $GLOBALS['cfg']['LoginCookieValidity'],
'session_gc_maxlifetime' => (int) ini_get('session.gc_maxlifetime'),
'logged_in' => isset($dbi) ? $dbi->isConnected() : false,
'is_https' => $GLOBALS['PMA_Config']->isHttps(),
'rootPath' => $GLOBALS['PMA_Config']->getRootPath(),
'arg_separator' => Url::getArgSeparator(),
'PMA_VERSION' => PMA_VERSION,
];
if (isset($GLOBALS['cfg']['Server'], $GLOBALS['cfg']['Server']['auth_type'])) {
$params['auth_type'] = $GLOBALS['cfg']['Server']['auth_type'];
if (isset($GLOBALS['cfg']['Server']['user'])) {
$params['user'] = $GLOBALS['cfg']['Server']['user'];
}
}
return $params;
}
/**
* Returns, as a string, a list of parameters
* used on the client side
*/
public function getJsParamsCode(): string
{
$params = $this->getJsParams();
foreach ($params as $key => $value) {
if (is_bool($value)) {
$params[$key] = $key . ':' . ($value ? 'true' : 'false') . '';
} else {
$params[$key] = $key . ':"' . Sanitize::escapeJsString($value) . '"';
}
}
return 'CommonParams.setAll({' . implode(',', $params) . '});';
}
/**
* Disables the rendering of the header
*/
public function disable(): void
{
$this->isEnabled = false;
}
/**
* Set the ajax flag to indicate whether
* we are servicing an ajax request
*
* @param bool $isAjax Whether we are servicing an ajax request
*/
public function setAjax(bool $isAjax): void
{
$this->isAjax = $isAjax;
$this->console->setAjax($isAjax);
}
/**
* Returns the Scripts object
*
* @return Scripts object
*/
public function getScripts(): Scripts
{
return $this->scripts;
}
/**
* Returns the Menu object
*
* @return Menu object
*/
public function getMenu(): Menu
{
return $this->menu;
}
/**
* Setter for the ID attribute in the BODY tag
*
* @param string $id Value for the ID attribute
*/
public function setBodyId(string $id): void
{
$this->bodyId = htmlspecialchars($id);
}
/**
* Setter for the title of the page
*
* @param string $title New title
*/
public function setTitle(string $title): void
{
$this->title = htmlspecialchars($title);
}
/**
* Disables the display of the top menu
*/
public function disableMenuAndConsole(): void
{
$this->menuEnabled = false;
$this->console->disable();
}
/**
* Disables the display of the top menu
*/
public function disableWarnings(): void
{
$this->warningsEnabled = false;
}
/**
* Turns on 'print view' mode
*/
public function enablePrintView(): void
{
$this->disableMenuAndConsole();
$this->setTitle(__('Print view') . ' - phpMyAdmin ' . PMA_VERSION);
$this->isPrintView = true;
}
/**
* Generates the header
*
* @return string The header
*/
public function getDisplay(): string
{
global $db, $table, $PMA_Theme, $dbi;
if ($this->headerIsSent || ! $this->isEnabled) {
return '';
}
$recentTable = '';
if (empty($_REQUEST['recent_table'])) {
$recentTable = $this->addRecentTable($db, $table);
}
if ($this->isAjax) {
return $recentTable;
}
$this->sendHttpHeaders();
$baseDir = defined('PMA_PATH_TO_BASEDIR') ? PMA_PATH_TO_BASEDIR : '';
$uniqueValue = $GLOBALS['PMA_Config']->getThemeUniqueValue();
$themePath = $PMA_Theme !== null ? $PMA_Theme->getPath() : '';
$version = self::getVersionParameter();
// The user preferences have been merged at this point
// so we can conditionally add CodeMirror
if ($GLOBALS['cfg']['CodemirrorEnable']) {
$this->scripts->addFile('vendor/codemirror/lib/codemirror.js');
$this->scripts->addFile('vendor/codemirror/mode/sql/sql.js');
$this->scripts->addFile('vendor/codemirror/addon/runmode/runmode.js');
$this->scripts->addFile('vendor/codemirror/addon/hint/show-hint.js');
$this->scripts->addFile('vendor/codemirror/addon/hint/sql-hint.js');
if ($GLOBALS['cfg']['LintEnable']) {
$this->scripts->addFile('vendor/codemirror/addon/lint/lint.js');
$this->scripts->addFile(
'codemirror/addon/lint/sql-lint.js'
);
}
}
$this->scripts->addCode(
'ConsoleEnterExecutes='
. ($GLOBALS['cfg']['ConsoleEnterExecutes'] ? 'true' : 'false')
);
$this->scripts->addFiles($this->console->getScripts());
if ($this->userprefsOfferImport) {
$this->scripts->addFile('config.js');
}
if ($this->menuEnabled && $GLOBALS['server'] > 0) {
$nav = new Navigation(
$this->template,
new Relation($dbi),
$dbi
);
$navigation = $nav->getDisplay();
}
$customHeader = Config::renderHeader();
// offer to load user preferences from localStorage
if ($this->userprefsOfferImport) {
$loadUserPreferences = $this->userPreferences->autoloadGetHeader();
}
if ($this->menuEnabled && $GLOBALS['server'] > 0) {
$menu = $this->menu->getDisplay();
}
$console = $this->console->getDisplay();
$messages = $this->getMessage();
return $this->template->render('header', [
'lang' => $GLOBALS['lang'],
'allow_third_party_framing' => $GLOBALS['cfg']['AllowThirdPartyFraming'],
'is_print_view' => $this->isPrintView,
'base_dir' => $baseDir,
'unique_value' => $uniqueValue,
'theme_path' => $themePath,
'version' => $version,
'text_dir' => $GLOBALS['text_dir'],
'server' => $GLOBALS['server'] ?? null,
'title' => $this->getPageTitle(),
'scripts' => $this->scripts->getDisplay(),
'body_id' => $this->bodyId,
'navigation' => $navigation ?? '',
'custom_header' => $customHeader,
'load_user_preferences' => $loadUserPreferences ?? '',
'show_hint' => $GLOBALS['cfg']['ShowHint'],
'is_warnings_enabled' => $this->warningsEnabled,
'is_menu_enabled' => $this->menuEnabled,
'menu' => $menu ?? '',
'console' => $console,
'messages' => $messages,
'recent_table' => $recentTable,
]);
}
/**
* Returns the message to be displayed at the top of
* the page, including the executed SQL query, if any.
*/
public function getMessage(): string
{
$retval = '';
$message = '';
if (! empty($GLOBALS['message'])) {
$message = $GLOBALS['message'];
unset($GLOBALS['message']);
} elseif (! empty($_REQUEST['message'])) {
$message = $_REQUEST['message'];
}
if (! empty($message)) {
if (isset($GLOBALS['buffer_message'])) {
$buffer_message = $GLOBALS['buffer_message'];
}
$retval .= Generator::getMessage($message);
if (isset($buffer_message)) {
$GLOBALS['buffer_message'] = $buffer_message;
}
}
return $retval;
}
/**
* Sends out the HTTP headers
*/
public function sendHttpHeaders(): void
{
if (defined('TESTSUITE')) {
return;
}
/**
* Sends http headers
*/
$GLOBALS['now'] = gmdate('D, d M Y H:i:s') . ' GMT';
/* Prevent against ClickJacking by disabling framing */
if (strtolower((string) $GLOBALS['cfg']['AllowThirdPartyFraming']) === 'sameorigin') {
header(
'X-Frame-Options: SAMEORIGIN'
);
} elseif ($GLOBALS['cfg']['AllowThirdPartyFraming'] !== true) {
header(
'X-Frame-Options: DENY'
);
}
header(
'Referrer-Policy: no-referrer'
);
$cspHeaders = $this->getCspHeaders();
foreach ($cspHeaders as $cspHeader) {
header($cspHeader);
}
// Re-enable possible disabled XSS filters
// see https://www.owasp.org/index.php/List_of_useful_HTTP_headers
header(
'X-XSS-Protection: 1; mode=block'
);
// "nosniff", prevents Internet Explorer and Google Chrome from MIME-sniffing
// a response away from the declared content-type
// see https://www.owasp.org/index.php/List_of_useful_HTTP_headers
header(
'X-Content-Type-Options: nosniff'
);
// Adobe cross-domain-policies
// see https://www.adobe.com/devnet/articles/crossdomain_policy_file_spec.html
header(
'X-Permitted-Cross-Domain-Policies: none'
);
// Robots meta tag
// see https://developers.google.com/webmasters/control-crawl-index/docs/robots_meta_tag
header(
'X-Robots-Tag: noindex, nofollow'
);
Core::noCacheHeader();
if (! defined('IS_TRANSFORMATION_WRAPPER')) {
// Define the charset to be used
header('Content-Type: text/html; charset=utf-8');
}
$this->headerIsSent = true;
}
/**
* If the page is missing the title, this function
* will set it to something reasonable
*/
public function getPageTitle(): string
{
if (strlen($this->title) == 0) {
if ($GLOBALS['server'] > 0) {
if (strlen($GLOBALS['table'])) {
$temp_title = $GLOBALS['cfg']['TitleTable'];
} elseif (strlen($GLOBALS['db'])) {
$temp_title = $GLOBALS['cfg']['TitleDatabase'];
} elseif (strlen($GLOBALS['cfg']['Server']['host'])) {
$temp_title = $GLOBALS['cfg']['TitleServer'];
} else {
$temp_title = $GLOBALS['cfg']['TitleDefault'];
}
$this->title = htmlspecialchars(
Util::expandUserString($temp_title)
);
} else {
$this->title = 'phpMyAdmin';
}
}
return $this->title;
}
/**
* Get all the CSP allow policy headers
*
* @return string[]
*/
private function getCspHeaders(): array
{
global $cfg;
$mapTileUrls = ' *.tile.openstreetmap.org';
$captchaUrl = '';
$cspAllow = $cfg['CSPAllow'];
if (! empty($cfg['CaptchaApi'])
&& ! empty($cfg['CaptchaRequestParam'])
&& ! empty($cfg['CaptchaResponseParam'])
&& ! empty($cfg['CaptchaLoginPrivateKey'])
&& ! empty($cfg['CaptchaLoginPublicKey'])
) {
$captchaUrl = ' ' . $cfg['CaptchaCsp'] . ' ';
}
return [
"Content-Security-Policy: default-src 'self' "
. $captchaUrl
. $cspAllow . ';'
. "script-src 'self' 'unsafe-inline' 'unsafe-eval' "
. $captchaUrl
. $cspAllow . ';'
. "style-src 'self' 'unsafe-inline' "
. $captchaUrl
. $cspAllow
. ';'
. "img-src 'self' data: "
. $cspAllow
. $mapTileUrls
. $captchaUrl
. ';'
. "object-src 'none';",
"X-Content-Security-Policy: default-src 'self' "
. $captchaUrl
. $cspAllow . ';'
. 'options inline-script eval-script;'
. 'referrer no-referrer;'
. "img-src 'self' data: "
. $cspAllow
. $mapTileUrls
. $captchaUrl
. ';'
. "object-src 'none';",
"X-WebKit-CSP: default-src 'self' "
. $captchaUrl
. $cspAllow . ';'
. "script-src 'self' "
. $captchaUrl
. $cspAllow
. " 'unsafe-inline' 'unsafe-eval';"
. 'referrer no-referrer;'
. "style-src 'self' 'unsafe-inline' "
. $captchaUrl
. ';'
. "img-src 'self' data: "
. $cspAllow
. $mapTileUrls
. $captchaUrl
. ';'
. "object-src 'none';",
];
}
/**
* Add recently used table and reload the navigation.
*
* @param string $db Database name where the table is located.
* @param string $table The table name
*/
private function addRecentTable(string $db, string $table): string
{
$retval = '';
if ($this->menuEnabled
&& strlen($table) > 0
&& $GLOBALS['cfg']['NumRecentTables'] > 0
) {
$tmp_result = RecentFavoriteTable::getInstance('recent')->add(
$db,
$table
);
if ($tmp_result === true) {
$retval = RecentFavoriteTable::getHtmlUpdateRecentTables();
} else {
$error = $tmp_result;
$retval = $error->getDisplay();
}
}
return $retval;
}
/**
* Returns the phpMyAdmin version to be appended to the url to avoid caching
* between versions
*
* @return string urlencoded pma version as a parameter
*/
public static function getVersionParameter(): string
{
return 'v=' . urlencode(PMA_VERSION);
}
private function getVariablesForJavaScript(): string
{
global $cfg, $PMA_Theme;
$maxInputVars = ini_get('max_input_vars');
$maxInputVarsValue = $maxInputVars === false || $maxInputVars === '' ? 'false' : (int) $maxInputVars;
return $this->template->render('javascript/variables', [
'first_day_of_calendar' => $cfg['FirstDayOfCalendar'],
'theme_image_path' => $PMA_Theme !== null ? $PMA_Theme->getImgPath() : '',
'max_input_vars' => $maxInputVarsValue,
]);
}
}
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