146 lines
4.2 KiB
PHP
146 lines
4.2 KiB
PHP
<?php
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declare (strict_types = 1);
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/**
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* @copyright Copyright (c) 2018, John Molakvoæ (skjnldsv@protonmail.com)
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*
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* @author John Molakvoæ (skjnldsv) <skjnldsv@protonmail.com>
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*
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* @license GNU AGPL version 3 or any later version
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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namespace OC\Core\Controller;
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use OCP\AppFramework\Controller;
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use OCP\AppFramework\Http;
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use OCP\AppFramework\Http\DataDisplayResponse;
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use OCP\AppFramework\Http\NotFoundResponse;
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use OCP\AppFramework\Utility\ITimeFactory;
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use OCP\Files\NotFoundException;
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use OCP\App\IAppManager;
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use OCP\IRequest;
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class SvgController extends Controller {
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/** @var string */
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protected $serverRoot;
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/** @var ITimeFactory */
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protected $timeFactory;
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/** @var IAppManager */
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protected $appManager;
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public function __construct(string $appName,
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IRequest $request,
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ITimeFactory $timeFactory,
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IAppManager $appManager) {
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parent::__construct($appName, $request);
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$this->serverRoot = \OC::$SERVERROOT;
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$this->timeFactory = $timeFactory;
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$this->appManager = $appManager;
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}
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/**
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* @PublicPage
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* @NoCSRFRequired
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*
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* Generate svg from filename with the requested color
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*
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* @param string $folder
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* @param string $fileName
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* @param string $color
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* @return DataDisplayResponse|NotFoundResponse
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*/
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public function getSvgFromCore(string $folder, string $fileName, string $color = 'ffffff') {
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$path = $this->serverRoot . "/core/img/$folder/$fileName.svg";
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return $this->getSvg($path, $color, $fileName);
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}
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/**
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* @PublicPage
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* @NoCSRFRequired
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*
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* Generate svg from filename with the requested color
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*
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* @param string $app
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* @param string $fileName
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* @param string $color
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* @return DataDisplayResponse|NotFoundResponse
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*/
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public function getSvgFromApp(string $app, string $fileName, string $color = 'ffffff') {
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if ($app === 'settings') {
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$path = $this->serverRoot . "/settings/img/$fileName.svg";
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return $this->getSvg($path, $color, $fileName);
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}
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// e.g /var/www/html/custom_apps/contacts
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// or outside root /var/www/apps/files
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$appRootPath = $this->appManager->getAppPath($app);
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if (!$appRootPath) {
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return new NotFoundResponse();
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}
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$path = $appRootPath ."/img/$fileName.svg";
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return $this->getSvg($path, $color, $fileName);
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}
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/**
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* Generate svg from filename with the requested color
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*
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* @param string $path
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* @param string $color
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* @return DataDisplayResponse|NotFoundResponse
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*/
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private function getSvg(string $path, string $color, string $fileName) {
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if (!file_exists($path)) {
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return new NotFoundResponse();
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}
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$svg = file_get_contents($path);
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if (is_null($svg)) {
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return new NotFoundResponse();
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}
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// add fill (fill is not present on black elements)
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$fillRe = '/<((circle|rect|path)((?!fill)[a-z0-9 =".\-#():;])+)\/>/mi';
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$svg = preg_replace($fillRe, '<$1 fill="#' . $color . '"/>', $svg);
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// replace any fill or stroke colors
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$svg = preg_replace('/stroke="#([a-z0-9]{3,6})"/mi', 'stroke="#' . $color . '"', $svg);
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$svg = preg_replace('/fill="#([a-z0-9]{3,6})"/mi', 'fill="#' . $color . '"', $svg);
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$response = new DataDisplayResponse($svg, Http::STATUS_OK, ['Content-Type' => 'image/svg+xml']);
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// Set cache control
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$ttl = 31536000;
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$response->cacheFor($ttl);
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$response->addHeader('Content-Disposition', 'inline; filename="' . $fileName . '.svg"');
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$expires = new \DateTime();
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$expires->setTimestamp($this->timeFactory->getTime());
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$expires->add(new \DateInterval('PT' . $ttl . 'S'));
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$response->addHeader('Expires', $expires->format(\DateTime::RFC1123));
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$response->addHeader('Pragma', 'cache');
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return $response;
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}
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}
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