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267 lines
7.5 KiB
267 lines
7.5 KiB
<?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 Christoph Wurst <christoph@winzerhof-wurst.at>
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* @author Joas Schilling <coding@schilljs.com>
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* @author John Molakvoæ (skjnldsv) <skjnldsv@protonmail.com>
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* @author Julius Härtl <jus@bitgrid.net>
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* @author Robin Appelman <robin@icewind.nl>
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* @author Roeland Jago Douma <roeland@famdouma.nl>
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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\Template;
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use OC\Files\AppData\Factory;
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use OCP\AppFramework\Utility\ITimeFactory;
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use OCP\Files\IAppData;
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use OCP\Files\NotFoundException;
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use OCP\Files\SimpleFS\ISimpleFile;
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use OCP\Files\SimpleFS\ISimpleFolder;
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use OCP\ILogger;
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use OCP\IURLGenerator;
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class IconsCacher {
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/** @var ILogger */
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protected $logger;
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/** @var IAppData */
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protected $appData;
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/** @var ISimpleFolder */
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private $folder;
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/** @var IURLGenerator */
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protected $urlGenerator;
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/** @var ITimeFactory */
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protected $timeFactory;
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/** @var string */
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private $iconVarRE = '/--(icon-[a-zA-Z0-9-]+):\s?url\(["\']?([a-zA-Z0-9-_\~\/\.\?\&\=\:\;\+\,]+)[^;]+;/m';
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/** @var string */
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private $fileName = 'icons-vars.css';
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private $iconList = 'icons-list.template';
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private $cachedCss;
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private $cachedList;
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/**
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* @param ILogger $logger
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* @param Factory $appDataFactory
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* @param IURLGenerator $urlGenerator
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* @param ITimeFactory $timeFactory
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* @throws \OCP\Files\NotPermittedException
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*/
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public function __construct(ILogger $logger,
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Factory $appDataFactory,
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IURLGenerator $urlGenerator,
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ITimeFactory $timeFactory) {
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$this->logger = $logger;
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$this->appData = $appDataFactory->get('css');
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$this->urlGenerator = $urlGenerator;
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$this->timeFactory = $timeFactory;
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try {
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$this->folder = $this->appData->getFolder('icons');
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} catch (NotFoundException $e) {
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$this->folder = $this->appData->newFolder('icons');
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}
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}
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private function getIconsFromCss(string $css): array {
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preg_match_all($this->iconVarRE, $css, $matches, PREG_SET_ORDER);
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$icons = [];
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foreach ($matches as $icon) {
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$icons[$icon[1]] = $icon[2];
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}
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return $icons;
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}
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/**
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* @param string $css
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* @return string
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* @throws NotFoundException
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* @throws \OCP\Files\NotPermittedException
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*/
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public function setIconsCss(string $css): string {
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$cachedFile = $this->getCachedList();
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if (!$cachedFile) {
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$currentData = '';
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$cachedFile = $this->folder->newFile($this->iconList);
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} else {
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$currentData = $cachedFile->getContent();
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}
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$cachedVarsCssFile = $this->getCachedCSS();
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if (!$cachedVarsCssFile) {
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$cachedVarsCssFile = $this->folder->newFile($this->fileName);
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}
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$icons = $this->getIconsFromCss($currentData . $css);
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$data = '';
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$list = '';
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foreach ($icons as $icon => $url) {
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$list .= "--$icon: url('$url');";
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list($location,$color) = $this->parseUrl($url);
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$svg = false;
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if ($location !== '' && \file_exists($location)) {
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$svg = \file_get_contents($location);
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}
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if ($svg === false) {
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$this->logger->debug('Failed to get icon file ' . $location);
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$data .= "--$icon: url('$url');";
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continue;
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}
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$encode = base64_encode($this->colorizeSvg($svg, $color));
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$data .= '--' . $icon . ': url(data:image/svg+xml;base64,' . $encode . ');';
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}
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if (\strlen($data) > 0 && \strlen($list) > 0) {
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$data = ":root {\n$data\n}";
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$cachedVarsCssFile->putContent($data);
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$list = ":root {\n$list\n}";
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$cachedFile->putContent($list);
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$this->cachedList = null;
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$this->cachedCss = null;
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}
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return preg_replace($this->iconVarRE, '', $css);
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}
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/**
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* @param $url
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* @return array
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*/
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private function parseUrl($url): array {
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$location = '';
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$color = '';
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$base = $this->getRoutePrefix() . '/svg/';
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$cleanUrl = \substr($url, \strlen($base));
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if (\strpos($url, $base . 'core') === 0) {
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$cleanUrl = \substr($cleanUrl, \strlen('core'));
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if (\preg_match('/\/([a-zA-Z0-9-_\~\/\.\=\:\;\+\,]+)\?color=([0-9a-fA-F]{3,6})/', $cleanUrl, $matches)) {
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list(,$cleanUrl,$color) = $matches;
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$location = \OC::$SERVERROOT . '/core/img/' . $cleanUrl . '.svg';
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}
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} elseif (\strpos($url, $base) === 0) {
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if (\preg_match('/([A-z0-9\_\-]+)\/([a-zA-Z0-9-_\~\/\.\=\:\;\+\,]+)\?color=([0-9a-fA-F]{3,6})/', $cleanUrl, $matches)) {
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list(,$app,$cleanUrl, $color) = $matches;
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$location = \OC_App::getAppPath($app) . '/img/' . $cleanUrl . '.svg';
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if ($app === 'settings') {
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$location = \OC::$SERVERROOT . '/settings/img/' . $cleanUrl . '.svg';
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}
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}
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}
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return [
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$location,
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$color
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];
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}
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/**
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* @param $svg
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* @param $color
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* @return string
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*/
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public function colorizeSvg($svg, $color): string {
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if (!preg_match('/^[0-9a-f]{3,6}$/i', $color)) {
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// Prevent not-sane colors from being written into the SVG
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$color = '000';
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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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return $svg;
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}
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private function getRoutePrefix() {
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$frontControllerActive = (\OC::$server->getConfig()->getSystemValue('htaccess.IgnoreFrontController', false) === true || getenv('front_controller_active') === 'true');
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$prefix = \OC::$WEBROOT . '/index.php';
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if ($frontControllerActive) {
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$prefix = \OC::$WEBROOT;
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}
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return $prefix;
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}
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/**
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* Get icons css file
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* @return ISimpleFile|boolean
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*/
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public function getCachedCSS() {
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try {
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if (!$this->cachedCss) {
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$this->cachedCss = $this->folder->getFile($this->fileName);
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}
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return $this->cachedCss;
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} catch (NotFoundException $e) {
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return false;
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}
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}
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/**
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* Get icon-vars list template
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* @return ISimpleFile|boolean
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*/
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public function getCachedList() {
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try {
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if (!$this->cachedList) {
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$this->cachedList = $this->folder->getFile($this->iconList);
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}
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return $this->cachedList;
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} catch (NotFoundException $e) {
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return false;
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}
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}
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/**
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* Add the icons cache css into the header
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*/
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public function injectCss() {
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$mtime = $this->timeFactory->getTime();
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$file = $this->getCachedList();
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if ($file) {
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$mtime = $file->getMTime();
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}
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// Only inject once
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foreach (\OC_Util::$headers as $header) {
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if (
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array_key_exists('attributes', $header) &&
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array_key_exists('href', $header['attributes']) &&
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strpos($header['attributes']['href'], $this->fileName) !== false) {
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return;
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}
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}
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$linkToCSS = $this->urlGenerator->linkToRoute('core.Css.getCss', ['appName' => 'icons', 'fileName' => $this->fileName, 'v' => $mtime]);
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\OC_Util::addHeader('link', ['rel' => 'stylesheet', 'href' => $linkToCSS], null, true);
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}
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}
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