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<?php
declare(strict_types=1);
/*
* This file is part of the TYPO3 CMS project.
*
* It is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License, either version 2
* of the License, or any later version.
*
* For the full copyright and license information, please read the
* LICENSE.txt file that was distributed with this source code.
*
* The TYPO3 project - inspiring people to share!
*/
namespace TYPO3\CMS\Backend\View;
use Psr\Log\LoggerAwareInterface;
use Psr\Log\LoggerAwareTrait;
use TYPO3\CMS\Core\Configuration\ExtensionConfiguration;
use TYPO3\CMS\Core\Utility\GeneralUtility;
use TYPO3\CMS\Core\Utility\PathUtility;
/**
* Provide styling for backend authentication forms, customized via extension configuration.
*
* @internal
*/
class AuthenticationStyleInformation implements LoggerAwareInterface
{
use LoggerAwareTrait;
protected array $backendExtensionConfiguration;
public function __construct(ExtensionConfiguration $extensionConfiguration)
{
$this->backendExtensionConfiguration = (array)$extensionConfiguration->get('backend');
}
public function getBackgroundImageStyles(): string
{
$backgroundImage = (string)($this->backendExtensionConfiguration['loginBackgroundImage'] ?? '');
if ($backgroundImage === '') {
return '';
}
$backgroundImageUri = $this->getUriForFileName($backgroundImage);
if ($backgroundImageUri === '') {
$this->logger->warning('The configured TYPO3 backend login background image "{image_url}" can\'t be resolved. Please check if the file exists and the extension is activated.', [
'image_url' => $backgroundImageUri,
]);
return '';
}
return '
.typo3-login-carousel-control.right,
.typo3-login-carousel-control.left,
.card-login { border: 0; }
.typo3-login { background-image: url("' . GeneralUtility::sanitizeCssVariableValue($backgroundImageUri) . '"); }
.typo3-login-footnote { background-color: #000000; color: #ffffff; opacity: 0.5; }
';
}
public function getHighlightColorStyles(): string
{
$highlightColor = (string)($this->backendExtensionConfiguration['loginHighlightColor'] ?? '');
if ($highlightColor === '') {
return '';
}
return '
.btn-login.disabled, .btn-login[disabled], fieldset[disabled] .btn-login,
.btn-login.disabled:hover, .btn-login[disabled]:hover, fieldset[disabled] .btn-login:hover,
.btn-login.disabled:focus, .btn-login[disabled]:focus, fieldset[disabled] .btn-login:focus,
.btn-login.disabled.focus, .btn-login[disabled].focus, fieldset[disabled] .btn-login.focus,
.btn-login.disabled:active, .btn-login[disabled]:active, fieldset[disabled] .btn-login:active,
.btn-login.disabled.active, .btn-login[disabled].active, fieldset[disabled] .btn-login.active,
.btn-login:hover, .btn-login:focus, .btn-login:active,
.btn-login:active:hover, .btn-login:active:focus,
.btn-login { background-color: ' . GeneralUtility::sanitizeCssVariableValue($highlightColor) . '; }
.card-login .card-footer { border-color: ' . GeneralUtility::sanitizeCssVariableValue($highlightColor) . '; }
';
}
public function getFooterNote(): string
{
$footerNote = (string)($this->backendExtensionConfiguration['loginFootnote'] ?? '');
if ($footerNote === '') {
return '';
}
return strip_tags(trim($footerNote));
}
public function getLogo(): string
{
$logo = ($this->backendExtensionConfiguration['loginLogo'] ?? '');
if ($logo === '') {
return '';
}
$logoUri = $this->getUriForFileName($logo);
if ($logoUri === '') {
$this->logger->warning('The configured TYPO3 backend login logo "{logo_url}" can\'t be resolved. Please check if the file exists and the extension is activated.', [
'logo_url' => $logoUri,
]);
return '';
}
return $logoUri;
}
public function getLogoAlt(): string
{
return trim((string)($this->backendExtensionConfiguration['loginLogoAlt'] ?? ''));
}
public function getDefaultLogo(): string
{
// Use TYPO3 logo depending on highlight color
$logo = ((string)($this->backendExtensionConfiguration['loginHighlightColor'] ?? '') !== '')
? 'EXT:core/Resources/Public/Images/typo3_black.svg'
: 'EXT:core/Resources/Public/Images/typo3_orange.svg';
return $this->getUriForFileName($logo);
}
public function getDefaultLogoStyles(): string
{
return '.typo3-login-logo .typo3-login-image { max-width: 150px; height:100%;}';
}
public function getSupportingImages(): array
{
return [
'capslock' => $this->getUriForFileName('EXT:backend/Resources/Public/Images/icon_capslock.svg'),
'typo3' => $this->getUriForFileName('EXT:core/Resources/Public/Images/typo3_orange.svg'),
];
}
/**
* Returns the uri of a relative reference, resolves the "EXT:" prefix
* (way of referring to files inside extensions) and checks that the file is inside
* the project root of the TYPO3 installation
*
* @param string $filename The input filename/filepath to evaluate
* @return string Returns the filename of $filename if valid, otherwise blank string.
* @internal
*/
protected function getUriForFileName(string $filename): string
{
// Check if it's already a URL
if (preg_match('/^(https?:)?\/\//', $filename)) {
return $filename;
}
$absoluteFilename = GeneralUtility::getFileAbsFileName(ltrim($filename, '/'));
$filename = '';
if ($absoluteFilename !== '' && @is_file($absoluteFilename)) {
$filename = PathUtility::getAbsoluteWebPath($absoluteFilename);
}
return $filename;
}
}