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<?php |
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/** |
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* CMS Pico - Create websites using Pico CMS for Nextcloud. |
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* |
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* @copyright Copyright (c) 2017, Maxence Lange (<[email protected]>) |
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* @copyright Copyright (c) 2019, Daniel Rudolf (<[email protected]>) |
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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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namespace OCA\CMSPico\Service; |
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use OCA\CMSPico\Files\FileInterface; |
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use OCP\Files\GenericFileException; |
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use OCP\Files\InvalidPathException; |
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use OCP\Files\NotPermittedException; |
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use OCP\Security\ISecureRandom; |
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class MiscService |
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{ |
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/** @var string[] */ |
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private $textFileMagic; |
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/** @var string[] */ |
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private $binaryFileMagic; |
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/** |
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* MiscService constructor. |
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*/ |
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1 |
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public function __construct() |
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{ |
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1 |
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$this->textFileMagic = [ |
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1 |
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hex2bin('EFBBBF'), |
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1 |
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hex2bin('0000FEFF'), |
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1 |
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hex2bin('FFFE0000'), |
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1 |
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hex2bin('FEFF'), |
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1 |
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hex2bin('FFFE') |
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]; |
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$this->binaryFileMagic = [ |
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'%PDF', |
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hex2bin('89') . 'PNG' |
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]; |
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} |
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/** |
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* @param string $path |
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* |
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* @return string |
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* @throws InvalidPathException |
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*/ |
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public function normalizePath(string $path): string |
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{ |
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$path = str_replace('\\', '/', $path); |
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$pathParts = explode('/', $path); |
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$resultParts = []; |
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foreach ($pathParts as $pathPart) { |
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if (($pathPart === '') || ($pathPart === '.')) { |
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continue; |
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} elseif ($pathPart === '..') { |
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if (empty($resultParts)) { |
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throw new InvalidPathException(); |
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} |
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array_pop($resultParts); |
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continue; |
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} |
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$resultParts[] = $pathPart; |
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} |
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return implode('/', $resultParts); |
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} |
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/** |
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* @param string $path |
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* @param string|null $basePath |
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* @param string|null $fileExtension |
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* |
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* @return string |
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* @throws InvalidPathException |
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*/ |
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public function getRelativePath(string $path, string $basePath = null, string $fileExtension = null): string |
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{ |
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if (!$basePath) { |
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$basePath = \OC::$SERVERROOT; |
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} |
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$basePath = $this->normalizePath($basePath); |
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$basePathLength = strlen($basePath); |
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$path = $this->normalizePath($path); |
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if ($path === $basePath) { |
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$relativePath = ''; |
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} elseif (substr($path, 0, $basePathLength + 1) === $basePath . '/') { |
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$relativePath = substr($path, $basePathLength + 1); |
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} else { |
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throw new InvalidPathException(); |
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} |
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if ($fileExtension) { |
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$fileName = basename($relativePath); |
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$fileExtensionPos = strrpos($fileName, '.'); |
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if (($fileExtensionPos === false) || (substr($fileName, $fileExtensionPos) !== $fileExtension)) { |
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throw new InvalidPathException(); |
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} |
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return substr($relativePath, 0, strlen($relativePath) - strlen($fileExtension)); |
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} |
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return $relativePath; |
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} |
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/** |
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* @param FileInterface $file |
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* |
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* @return bool |
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* @throws NotPermittedException |
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* @throws GenericFileException |
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*/ |
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public function isBinaryFile(FileInterface $file): bool |
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{ |
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try { |
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$buffer = file_get_contents($file->getLocalPath(), false, null, 0, 1024); |
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} catch (\Exception $e) { |
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$buffer = false; |
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} |
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if ($buffer === false) { |
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$buffer = substr($file->getContent(), 0, 1024); |
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} |
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if ($buffer === '') { |
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return false; |
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} |
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foreach ($this->textFileMagic as $textFileMagic) { |
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if (substr_compare($buffer, $textFileMagic, 0, strlen($textFileMagic)) === 0) { |
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return false; |
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} |
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} |
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foreach ($this->binaryFileMagic as $binaryFileMagic) { |
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if (substr_compare($buffer, $binaryFileMagic, 0, strlen($binaryFileMagic)) === 0) { |
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return true; |
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} |
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} |
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return (strpos($buffer, "\0") !== false); |
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} |
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/** |
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* @param int $length |
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* @param string $prefix |
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* @param string $suffix |
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* |
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* @return string |
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*/ |
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1 |
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public function getRandom(int $length = 10, string $prefix = '', string $suffix = ''): string |
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{ |
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$randomChars = ISecureRandom::CHAR_UPPER . ISecureRandom::CHAR_LOWER . ISecureRandom::CHAR_DIGITS; |
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$random = \OC::$server->getSecureRandom()->generate($length, $randomChars); |
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return ($prefix ? $prefix . '.' : '') . $random . ($suffix ? '.' . $suffix : ''); |
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} |
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/** |
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* @param \Exception $e |
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* @param string ...$classNames |
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* |
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* @throws \Exception |
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*/ |
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public function consumeException(\Exception $e, string ...$classNames) |
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{ |
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1 |
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foreach ($classNames as $className) { |
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if (is_a($e, $className)) { |
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return; |
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} |
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} |
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throw $e; |
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} |
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} |
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nextcloud /
cms_pico
