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author | Roeland Jago Douma <rullzer@owncloud.com> | 2016-04-29 13:13:47 +0200 |
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committer | Roeland Jago Douma <rullzer@owncloud.com> | 2016-04-29 13:13:47 +0200 |
commit | f5e0d6ae6adacc44d2e7821425af39ba0a7dc71a (patch) | |
tree | e717eb0e4f1b6b3485c6d7fbb1d2df195be9609a /lib/private/largefilehelper.php | |
parent | 5b45f0f91448f109ff33d4fb03368a0405e1da10 (diff) | |
download | nextcloud-server-f5e0d6ae6adacc44d2e7821425af39ba0a7dc71a.tar.gz nextcloud-server-f5e0d6ae6adacc44d2e7821425af39ba0a7dc71a.zip |
Move more of \OC to PSR-4
* \OC\DateTimeFormatter
* \OC\DateTimeZone
* \OC\ForbiddenException
* \OC\HTTPHelper
* \OC\HintException
* \OC\LargeFileHelper
* \OC\Log
* \OC\NaturalSort
* \OC\NavigationManager
* \OC\NeedsUpdateException
* \OC\NotSquareException
Diffstat (limited to 'lib/private/largefilehelper.php')
-rw-r--r-- | lib/private/largefilehelper.php | 210 |
1 files changed, 0 insertions, 210 deletions
diff --git a/lib/private/largefilehelper.php b/lib/private/largefilehelper.php deleted file mode 100644 index f5252ee01e7..00000000000 --- a/lib/private/largefilehelper.php +++ /dev/null @@ -1,210 +0,0 @@ -<?php -/** - * @author Andreas Fischer <bantu@owncloud.com> - * @author Lukas Reschke <lukas@owncloud.com> - * @author Michael Roitzsch <reactorcontrol@icloud.com> - * @author Morris Jobke <hey@morrisjobke.de> - * @author Thomas Müller <thomas.mueller@tmit.eu> - * - * @copyright Copyright (c) 2016, ownCloud, Inc. - * @license AGPL-3.0 - * - * This code is free software: you can redistribute it and/or modify - * it under the terms of the GNU Affero General Public License, version 3, - * as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU Affero General Public License for more details. - * - * You should have received a copy of the GNU Affero General Public License, version 3, - * along with this program. If not, see <http://www.gnu.org/licenses/> - * - */ - -namespace OC; - -/** - * Helper class for large files on 32-bit platforms. - */ -class LargeFileHelper { - /** - * pow(2, 53) as a base-10 string. - * @var string - */ - const POW_2_53 = '9007199254740992'; - - /** - * pow(2, 53) - 1 as a base-10 string. - * @var string - */ - const POW_2_53_MINUS_1 = '9007199254740991'; - - /** - * @brief Checks whether our assumptions hold on the PHP platform we are on. - * - * @throws \RunTimeException if our assumptions do not hold on the current - * PHP platform. - */ - public function __construct() { - $pow_2_53 = floatval(self::POW_2_53_MINUS_1) + 1.0; - if ($this->formatUnsignedInteger($pow_2_53) !== self::POW_2_53) { - throw new \RunTimeException( - 'This class assumes floats to be double precision or "better".' - ); - } - } - - /** - * @brief Formats a signed integer or float as an unsigned integer base-10 - * string. Passed strings will be checked for being base-10. - * - * @param int|float|string $number Number containing unsigned integer data - * - * @throws \UnexpectedValueException if $number is not a float, not an int - * and not a base-10 string. - * - * @return string Unsigned integer base-10 string - */ - public function formatUnsignedInteger($number) { - if (is_float($number)) { - // Undo the effect of the php.ini setting 'precision'. - return number_format($number, 0, '', ''); - } else if (is_string($number) && ctype_digit($number)) { - return $number; - } else if (is_int($number)) { - // Interpret signed integer as unsigned integer. - return sprintf('%u', $number); - } else { - throw new \UnexpectedValueException( - 'Expected int, float or base-10 string' - ); - } - } - - /** - * @brief Tries to get the size of a file via various workarounds that - * even work for large files on 32-bit platforms. - * - * @param string $filename Path to the file. - * - * @return null|int|float Number of bytes as number (float or int) or - * null on failure. - */ - public function getFileSize($filename) { - $fileSize = $this->getFileSizeViaCurl($filename); - if (!is_null($fileSize)) { - return $fileSize; - } - $fileSize = $this->getFileSizeViaCOM($filename); - if (!is_null($fileSize)) { - return $fileSize; - } - $fileSize = $this->getFileSizeViaExec($filename); - if (!is_null($fileSize)) { - return $fileSize; - } - return $this->getFileSizeNative($filename); - } - - /** - * @brief Tries to get the size of a file via a CURL HEAD request. - * - * @param string $fileName Path to the file. - * - * @return null|int|float Number of bytes as number (float or int) or - * null on failure. - */ - public function getFileSizeViaCurl($fileName) { - if (\OC::$server->getIniWrapper()->getString('open_basedir') === '') { - $encodedFileName = rawurlencode($fileName); - $ch = curl_init("file://$encodedFileName"); - curl_setopt($ch, CURLOPT_NOBODY, true); - curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); - curl_setopt($ch, CURLOPT_HEADER, true); - $data = curl_exec($ch); - curl_close($ch); - if ($data !== false) { - $matches = array(); - preg_match('/Content-Length: (\d+)/', $data, $matches); - if (isset($matches[1])) { - return 0 + $matches[1]; - } - } - } - return null; - } - - /** - * @brief Tries to get the size of a file via the Windows DOM extension. - * - * @param string $filename Path to the file. - * - * @return null|int|float Number of bytes as number (float or int) or - * null on failure. - */ - public function getFileSizeViaCOM($filename) { - if (class_exists('COM')) { - $fsObj = new \COM("Scripting.FileSystemObject"); - $file = $fsObj->GetFile($filename); - return 0 + $file->Size; - } - return null; - } - - /** - * @brief Tries to get the size of a file via an exec() call. - * - * @param string $filename Path to the file. - * - * @return null|int|float Number of bytes as number (float or int) or - * null on failure. - */ - public function getFileSizeViaExec($filename) { - if (\OC_Helper::is_function_enabled('exec')) { - $os = strtolower(php_uname('s')); - $arg = escapeshellarg($filename); - $result = null; - if (strpos($os, 'linux') !== false) { - $result = $this->exec("stat -c %s $arg"); - } else if (strpos($os, 'bsd') !== false || strpos($os, 'darwin') !== false) { - $result = $this->exec("stat -f %z $arg"); - } else if (strpos($os, 'win') !== false) { - $result = $this->exec("for %F in ($arg) do @echo %~zF"); - if (is_null($result)) { - // PowerShell - $result = $this->exec("(Get-Item $arg).length"); - } - } - return $result; - } - return null; - } - - /** - * @brief Gets the size of a file via a filesize() call and converts - * negative signed int to positive float. As the result of filesize() - * will wrap around after a file size of 2^32 bytes = 4 GiB, this - * should only be used as a last resort. - * - * @param string $filename Path to the file. - * - * @return int|float Number of bytes as number (float or int). - */ - public function getFileSizeNative($filename) { - $result = filesize($filename); - if ($result < 0) { - // For file sizes between 2 GiB and 4 GiB, filesize() will return a - // negative int, as the PHP data type int is signed. Interpret the - // returned int as an unsigned integer and put it into a float. - return (float) sprintf('%u', $result); - } - return $result; - } - - protected function exec($cmd) { - $result = trim(exec($cmd)); - return ctype_digit($result) ? 0 + $result : null; - } -} |