Site.php

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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\Core\Site\Entity;
 
use Psr\Http\Message\UriInterface;
use Symfony\Component\ExpressionLanguage\SyntaxError;
use ‪TYPO3\CMS\Core\Authentication\BackendUserAuthentication;
use ‪TYPO3\CMS\Core\Context\Context;
use ‪TYPO3\CMS\Core\Error\PageErrorHandler\FluidPageErrorHandler;
use ‪TYPO3\CMS\Core\Error\PageErrorHandler\InvalidPageErrorHandlerException;
use ‪TYPO3\CMS\Core\Error\PageErrorHandler\PageContentErrorHandler;
use ‪TYPO3\CMS\Core\Error\PageErrorHandler\PageErrorHandlerInterface;
use ‪TYPO3\CMS\Core\Error\PageErrorHandler\PageErrorHandlerNotConfiguredException;
use ‪TYPO3\CMS\Core\ExpressionLanguage\Resolver;
use ‪TYPO3\CMS\Core\Http\Uri;
use ‪TYPO3\CMS\Core\Localization\LanguageService;
use ‪TYPO3\CMS\Core\Routing\PageRouter;
use ‪TYPO3\CMS\Core\Routing\RouterInterface;
use ‪TYPO3\CMS\Core\Utility\GeneralUtility;
 
class ‪Site implements ‪SiteInterface
{
    protected const ‪ERRORHANDLER_TYPE_PAGE = 'Page';
    protected const ‪ERRORHANDLER_TYPE_FLUID = 'Fluid';
    protected const ‪ERRORHANDLER_TYPE_PHP = 'PHP';
 
    protected ‪$identifier;
 
    protected ‪$base;
 
    protected ‪$rootPageId;
 
    protected ‪$configuration;
 
    protected $languages;
 
    protected $errorHandlers;
 
    public function __construct(string ‪$identifier, int ‪$rootPageId, array ‪$configuration)
    {
        $this->‪identifier = ‪$identifier;
        $this->‪rootPageId = ‪$rootPageId;
        $this->‪configuration = ‪$configuration;
        $configuration['languages'] = !empty(‪$configuration['languages']) ? ‪$configuration['languages'] : [
            0 => [
                'languageId' => 0,
                'title' => 'Default',
                'navigationTitle' => '',
                'typo3Language' => 'default',
                'flag' => 'us',
                'locale' => 'en_US.UTF-8',
                'iso-639-1' => 'en',
                'hreflang' => 'en-US',
                'direction' => '',
            ],
        ];
        ‪$baseUrl = $this->‪resolveBaseWithVariants(
            $configuration['base'] ?? '',
            ‪$configuration['baseVariants'] ?? null
        );
        $this->‪base = new ‪Uri($this->‪sanitizeBaseUrl(‪$baseUrl));
 
        foreach ($configuration['languages'] as $languageConfiguration) {
            $languageUid = (int)$languageConfiguration['languageId'];
            // site language has defined its own base, this is the case most of the time.
            if (!empty($languageConfiguration['base'])) {
                ‪$base = $this->‪resolveBaseWithVariants(
                    $languageConfiguration['base'],
                    $languageConfiguration['baseVariants'] ?? null
                );
                ‪$base = new ‪Uri($this->‪sanitizeBaseUrl($base));
                // no host given by the language-specific base, so lets prefix the main site base
                if (‪$base->getScheme() === '' && ‪$base->getHost() === '') {
                    ‪$base = rtrim((string)$this->‪base, '/') . '/' . ltrim((string)‪$base, '/');
                    ‪$base = new ‪Uri($this->‪sanitizeBaseUrl($base));
                }
            } else {
                // Language configuration does not have a base defined
                // So the main site base is used (usually done for default languages)
                ‪$base = new Uri($this->‪sanitizeBaseUrl(rtrim((string)$this->‪base, '/') . '/'));
            }
            if (!empty($languageConfiguration['flag'])) {
                if ($languageConfiguration['flag'] === 'global') {
                    $languageConfiguration['flag'] = 'flags-multiple';
                } elseif ($languageConfiguration['flag'] !== 'empty-empty') {
                    $languageConfiguration['flag'] = 'flags-' . $languageConfiguration['flag'];
                }
            }
            $this->‪languages[$languageUid] = new SiteLanguage(
                $languageUid,
                $languageConfiguration['locale'],
                ‪$base,
                $languageConfiguration
            );
        }
        foreach (‪$configuration['errorHandling'] ?? [] as $errorHandlingConfiguration) {
            $code = $errorHandlingConfiguration['errorCode'];
            unset($errorHandlingConfiguration['errorCode']);
            $this->errorHandlers[(int)$code] = $errorHandlingConfiguration;
        }
    }
 
    protected function ‪resolveBaseWithVariants(string ‪$baseUrl, ?array $baseVariants): string
    {
        if (!empty($baseVariants)) {
            $expressionLanguageResolver = GeneralUtility::makeInstance(
                Resolver::class,
                'site',
                []
            );
            foreach ($baseVariants as $baseVariant) {
                try {
                    if ($expressionLanguageResolver->evaluate($baseVariant['condition'])) {
                        ‪$baseUrl = $baseVariant['base'];
                        break;
                    }
                } catch (SyntaxError $e) {
                    // silently fail and do not evaluate
                    // no logger here, as Site is currently cached and serialized
                }
            }
        }
        return ‪$baseUrl;
    }
 
    public function ‪getIdentifier(): string
    {
        return ‪$this->identifier;
    }
 
    public function ‪getBase(): UriInterface
    {
        return ‪$this->base;
    }
 
    public function ‪getRootPageId(): int
    {
        return ‪$this->rootPageId;
    }
 
    public function ‪getLanguages(): array
    {
        $languages = [];
        foreach ($this->‪languages as $languageId => $language) {
            if ($language->enabled()) {
                $languages[$languageId] = $language;
            }
        }
        return $languages;
    }
 
    public function getAllLanguages(): array
    {
        return $this->languages;
    }
 
    public function ‪getLanguageById(int $languageId): SiteLanguage
    {
        if (isset($this->‪languages[$languageId])) {
            return $this->‪languages[$languageId];
        }
        throw new \InvalidArgumentException(
            'Language ' . $languageId . ' does not exist on site ' . $this->‪identifier . '.',
            1522960188
        );
    }
 
    public function ‪getDefaultLanguage(): ‪SiteLanguage
    {
        return reset($this->‪languages);
    }
 
    public function ‪getAvailableLanguages(BackendUserAuthentication $user, bool $includeAllLanguagesFlag = false, int $pageId = null): array
    {
        ‪$availableLanguages = [];
 
        // Check if we need to add language "-1"
        if ($includeAllLanguagesFlag && $user->checkLanguageAccess(-1)) {
            ‪$availableLanguages[-1] = new ‪SiteLanguage(-1, '', $this->‪getBase(), [
                'title' => $this->‪getLanguageService()->sL('LLL:EXT:core/Resources/Private/Language/locallang_mod_web_list.xlf:multipleLanguages'),
                'flag' => 'flags-multiple',
            ]);
        }
 
        // Do not add the ones that are not allowed by the user
        foreach ($this->‪languages as $language) {
            if ($user->checkLanguageAccess($language->getLanguageId())) {
                ‪$availableLanguages[$language->getLanguageId()] = $language;
            }
        }
 
        return ‪$availableLanguages;
    }
 
    public function ‪getErrorHandler(int $statusCode): PageErrorHandlerInterface
    {
        $errorHandlerConfiguration = $this->errorHandlers[$statusCode] ?? null;
        switch ($errorHandlerConfiguration['errorHandler'] ?? null) {
            case ‪self::ERRORHANDLER_TYPE_FLUID:
                return GeneralUtility::makeInstance(FluidPageErrorHandler::class, $statusCode, $errorHandlerConfiguration);
            case ‪self::ERRORHANDLER_TYPE_PAGE:
                return GeneralUtility::makeInstance(PageContentErrorHandler::class, $statusCode, $errorHandlerConfiguration);
            case ‪self::ERRORHANDLER_TYPE_PHP:
                $handler = GeneralUtility::makeInstance($errorHandlerConfiguration['errorPhpClassFQCN'], $statusCode, $errorHandlerConfiguration);
                // Check if the interface is implemented
                if (!($handler instanceof PageErrorHandlerInterface)) {
                    throw new InvalidPageErrorHandlerException('The configured error handler "' . (string)$errorHandlerConfiguration['errorPhpClassFQCN'] . '" for status code ' . $statusCode . ' must implement the PageErrorHandlerInterface.', 1527432330);
                }
                return $handler;
        }
        throw new PageErrorHandlerNotConfiguredException('No error handler given for the status code "' . $statusCode . '".', 1522495914);
    }
 
    public function ‪getConfiguration(): array
    {
        return ‪$this->configuration;
    }
 
    public function ‪getAttribute(string $attributeName)
    {
        if (isset($this->‪configuration[$attributeName])) {
            return $this->‪configuration[$attributeName];
        }
        throw new \InvalidArgumentException(
            'Attribute ' . $attributeName . ' does not exist on site ' . $this->‪identifier . '.',
            1522495954
        );
    }
 
    protected function ‪sanitizeBaseUrl(string $base): string
    {
        // no protocol ("//") and the first part is no "/" (path), means that this is a domain like
        // "www.domain.com/subpage", and we want to ensure that this one then gets a "no-scheme agnostic" part
        if (!empty(‪$base) && !str_contains(‪$base, '//') && ‪$base[0] !== '/') {
            // either a scheme is added, or no scheme but with domain, or a path which is not absolute
            // make the base prefixed with a slash, so it is recognized as path, not as domain
            // treat as path
            if (!str_contains(‪$base, '.')) {
                ‪$base = '/' . ‪$base;
            } else {
                // treat as domain name
                ‪$base = '//' . ‪$base;
            }
        }
        return ‪$base;
    }
 
    public function ‪getRouter(Context $context = null): RouterInterface
    {
        return GeneralUtility::makeInstance(PageRouter::class, $this, $context);
    }
 
    protected function ‪getLanguageService(): ‪LanguageService
    {
        return ‪$GLOBALS['LANG'];
    }
}