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epubreader/lib/Controller/PageController.php

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<?php
/**
* @author Frank de Lange
* @copyright 2015 Frank de Lange
*
* This file is licensed under the Affero General Public License version 3 or
* later.
* See the COPYING-README file.
*/
namespace OCA\Epubreader\Controller;
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use OCA\Epubreader\Service\BookmarkService;
use OCA\Epubreader\Service\PreferenceService;
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use OCP\AppFramework\Controller;
use OCP\AppFramework\Http\ContentSecurityPolicy;
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use OCP\AppFramework\Http\TemplateResponse;
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use OCP\Files\FileInfo;
use OCP\Files\Folder;
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use OCP\Files\InvalidPathException;
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use OCP\Files\IRootFolder;
use OCP\Files\NotFoundException;
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use OCP\IRequest;
use OCP\IURLGenerator;
use OCP\Share\IManager;
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class PageController extends Controller
{
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private IURLGenerator $urlGenerator;
private IRootFolder $rootFolder;
private IManager $shareManager;
private string $userId;
private BookmarkService $bookmarkService;
private PreferenceService $preferenceService;
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public function __construct(
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string $AppName,
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IRequest $request,
IURLGenerator $urlGenerator,
IRootFolder $rootFolder,
IManager $shareManager,
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string $UserId,
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BookmarkService $bookmarkService,
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PreferenceService $preferenceService
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) {
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parent::__construct($AppName, $request);
$this->urlGenerator = $urlGenerator;
$this->rootFolder = $rootFolder;
$this->shareManager = $shareManager;
$this->userId = $UserId;
$this->bookmarkService = $bookmarkService;
$this->preferenceService = $preferenceService;
}
/**
* @PublicPage
* @NoCSRFRequired
*/
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public function showReader(): TemplateResponse
{
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$templates = [
'application/epub+zip' => 'epubreader',
'application/x-cbr' => 'cbreader',
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'application/pdf' => 'pdfreader',
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];
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$fileInfo = $this->getFileInfo((string) $this->request->getParam('file'));
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/** @var int $fileId */
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$fileId = $fileInfo['fileId'];
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$type = (string) $this->request->getParam('type');
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$scope = $template = $templates[$type];
$params = [
'urlGenerator' => $this->urlGenerator,
'downloadLink' => $this->request->getParam('file'),
'scope' => $scope,
'fileId' => $fileInfo['fileId'],
'fileName' => $fileInfo['fileName'],
'fileType' => $fileInfo['fileType'],
'cursor' => $this->toJson($this->bookmarkService->getCursor($fileId)),
'defaults' => $this->toJson($this->preferenceService->getDefault($scope)),
'preferences' => $this->toJson($this->preferenceService->get($scope, $fileId)),
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'metadata' => $this->toJson([]),
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'annotations' => $this->toJson($this->bookmarkService->get($fileId)),
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];
$policy = new ContentSecurityPolicy();
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$policy->addAllowedStyleDomain('\'self\'');
$policy->addAllowedStyleDomain('blob:');
$policy->addAllowedScriptDomain('\'self\'');
$policy->addAllowedFrameDomain('\'self\'');
$policy->addAllowedFontDomain('\'self\'');
$policy->addAllowedFontDomain('data:');
$policy->addAllowedFontDomain('blob:');
$policy->addAllowedImageDomain('blob:');
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$response = new TemplateResponse($this->appName, $template, $params, 'blank');
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$response->setContentSecurityPolicy($policy);
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return $response;
}
/**
* @brief sharing-aware file info retriever
*
* Work around the differences between normal and shared file access
* (this should be abstracted away in OC/NC IMnsHO)
*
* @param string $path path-fragment from url
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*
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* @throws InvalidPathException|NotFoundException
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*/
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private function getFileInfo(string $path): array
{
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$count = 0;
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$shareToken = preg_replace('/(?:\\/index\\.php)?\\/s\\/([A-Za-z0-9]{15,32})\\/download.*/', '$1', $path, 1, $count);
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if (1 === $count) {
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/* shared file or directory */
$node = $this->shareManager->getShareByToken($shareToken)->getNode();
$type = $node->getType();
/* shared directory, need file path to continue, */
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if (FileInfo::TYPE_FOLDER == $type && $node instanceof Folder) {
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$query = [];
parse_str(parse_url($path, PHP_URL_QUERY), $query);
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if (isset($query['path']) && is_string($query['path'])) {
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$node = $node->get($query['path']);
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} elseif (isset($query['files']) && is_string($query['files'])) {
$node = $node->get($query['files']);
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} else {
throw new NotFoundException('Shared file path or name not set');
}
}
$filePath = $node->getPath();
$fileId = $node->getId();
} else {
$filePath = $path;
$fileId = $this->rootFolder->getUserFolder($this->userId)
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->get(preg_replace('/.*\\/remote.php\\/webdav(.*)/', '$1', rawurldecode((string) $this->request->getParam('file'))))
->getId()
;
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}
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$pathInfo = pathinfo($filePath);
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return [
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'fileName' => $pathInfo['filename'],
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'fileType' => strtolower($pathInfo['extension'] ?? ''),
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'fileId' => $fileId,
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];
}
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private function toJson(array $value): string
{
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return htmlspecialchars(json_encode($value), ENT_QUOTES, 'UTF-8');
}
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}