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<?php namespace Symfony\Component\Filesystem; if (!defined('ABSPATH')) exit; use Symfony\Component\Filesystem\Exception\FileNotFoundException; use Symfony\Component\Filesystem\Exception\InvalidArgumentException; use Symfony\Component\Filesystem\Exception\IOException; class Filesystem { private static $lastError; public function copy($originFile, $targetFile, $overwriteNewerFiles = false) { $originIsLocal = stream_is_local($originFile) \|\| 0 === stripos($originFile, 'file://'); if ($originIsLocal && !is_file($originFile)) { throw new FileNotFoundException(sprintf('Failed to copy "%s" because file does not exist.', $originFile), 0, null, $originFile); } $this->mkdir(\dirname($targetFile)); $doCopy = true; if (!$overwriteNewerFiles && null === parse_url($originFile, \PHP_URL_HOST) && is_file($targetFile)) { $doCopy = filemtime($originFile) > filemtime($targetFile); } if ($doCopy) { // https://bugs.php.net/64634 if (false === $source = @fopen($originFile, 'r')) { throw new IOException(sprintf('Failed to copy "%s" to "%s" because source file could not be opened for reading.', $originFile, $targetFile), 0, null, $originFile); } // Stream context created to allow files overwrite when using FTP stream wrapper - disabled by default if (false === $target = @fopen($targetFile, 'w', false, stream_context_create(['ftp' => ['overwrite' => true]]))) { throw new IOException(sprintf('Failed to copy "%s" to "%s" because target file could not be opened for writing.', $originFile, $targetFile), 0, null, $originFile); } $bytesCopied = stream_copy_to_stream($source, $target); fclose($source); fclose($target); unset($source, $target); if (!is_file($targetFile)) { throw new IOException(sprintf('Failed to copy "%s" to "%s".', $originFile, $targetFile), 0, null, $originFile); } if ($originIsLocal) { // Like `cp`, preserve executable permission bits @chmod($targetFile, fileperms($targetFile) \| (fileperms($originFile) & 0111)); if ($bytesCopied !== $bytesOrigin = filesize($originFile)) { throw new IOException(sprintf('Failed to copy the whole content of "%s" to "%s" (%g of %g bytes copied).', $originFile, $targetFile, $bytesCopied, $bytesOrigin), 0, null, $originFile); } } } } public function mkdir($dirs, $mode = 0777) { foreach ($this->toIterable($dirs) as $dir) { if (is_dir($dir)) { continue; } if (!self::box('mkdir', $dir, $mode, true)) { if (!is_dir($dir)) { // The directory was not created by a concurrent process. Let's throw an exception with a developer friendly error message if we have one if (self::$lastError) { throw new IOException(sprintf('Failed to create "%s": ', $dir).self::$lastError, 0, null, $dir); } throw new IOException(sprintf('Failed to create "%s".', $dir), 0, null, $dir); } } } } public function exists($files) { $maxPathLength = \PHP_MAXPATHLEN - 2; foreach ($this->toIterable($files) as $file) { if (\strlen($file) > $maxPathLength) { throw new IOException(sprintf('Could not check if file exist because path length exceeds %d characters.', $maxPathLength), 0, null, $file); } if (!file_exists($file)) { return false; } } return true; } public function touch($files, $time = null, $atime = null) { foreach ($this->toIterable($files) as $file) { $touch = $time ? @touch($file, $time, $atime) : @touch($file); if (true !== $touch) { throw new IOException(sprintf('Failed to touch "%s".', $file), 0, null, $file); } } } public function remove($files) { if ($files instanceof \Traversable) { $files = iterator_to_array($files, false); } elseif (!\is_array($files)) { $files = [$files]; } $files = array_reverse($files); foreach ($files as $file) { if (is_link($file)) { // See https://bugs.php.net/52176 if (!(self::box('unlink', $file) \|\| '\\' !== \DIRECTORY_SEPARATOR \|\| self::box('rmdir', $file)) && file_exists($file)) { throw new IOException(sprintf('Failed to remove symlink "%s": ', $file).self::$lastError); } } elseif (is_dir($file)) { $this->remove(new \FilesystemIterator($file, \FilesystemIterator::CURRENT_AS_PATHNAME \| \FilesystemIterator::SKIP_DOTS)); if (!self::box('rmdir', $file) && file_exists($file)) { throw new IOException(sprintf('Failed to remove directory "%s": ', $file).self::$lastError); } } elseif (!self::box('unlink', $file) && (str_contains(self::$lastError, 'Permission denied') \|\| file_exists($file))) { throw new IOException(sprintf('Failed to remove file "%s": ', $file).self::$lastError); } } } public function chmod($files, $mode, $umask = 0000, $recursive = false) { foreach ($this->toIterable($files) as $file) { if ((\PHP_VERSION_ID < 80000 \|\| \is_int($mode)) && true !== @chmod($file, $mode & ~$umask)) { throw new IOException(sprintf('Failed to chmod file "%s".', $file), 0, null, $file); } if ($recursive && is_dir($file) && !is_link($file)) { $this->chmod(new \FilesystemIterator($file), $mode, $umask, true); } } } public function chown($files, $user, $recursive = false) { foreach ($this->toIterable($files) as $file) { if ($recursive && is_dir($file) && !is_link($file)) { $this->chown(new \FilesystemIterator($file), $user, true); } if (is_link($file) && \function_exists('lchown')) { if (true !== @lchown($file, $user)) { throw new IOException(sprintf('Failed to chown file "%s".', $file), 0, null, $file); } } else { if (true !== @chown($file, $user)) { throw new IOException(sprintf('Failed to chown file "%s".', $file), 0, null, $file); } } } } public function chgrp($files, $group, $recursive = false) { foreach ($this->toIterable($files) as $file) { if ($recursive && is_dir($file) && !is_link($file)) { $this->chgrp(new \FilesystemIterator($file), $group, true); } if (is_link($file) && \function_exists('lchgrp')) { if (true !== @lchgrp($file, $group)) { throw new IOException(sprintf('Failed to chgrp file "%s".', $file), 0, null, $file); } } else { if (true !== @chgrp($file, $group)) { throw new IOException(sprintf('Failed to chgrp file "%s".', $file), 0, null, $file); } } } } public function rename($origin, $target, $overwrite = false) { // we check that target does not exist if (!$overwrite && $this->isReadable($target)) { throw new IOException(sprintf('Cannot rename because the target "%s" already exists.', $target), 0, null, $target); } if (true !== @rename($origin, $target)) { if (is_dir($origin)) { // See https://bugs.php.net/54097 & https://php.net/rename#113943 $this->mirror($origin, $target, null, ['override' => $overwrite, 'delete' => $overwrite]); $this->remove($origin); return; } throw new IOException(sprintf('Cannot rename "%s" to "%s".', $origin, $target), 0, null, $target); } } private function isReadable(string $filename): bool { $maxPathLength = \PHP_MAXPATHLEN - 2; if (\strlen($filename) > $maxPathLength) { throw new IOException(sprintf('Could not check if file is readable because path length exceeds %d characters.', $maxPathLength), 0, null, $filename); } return is_readable($filename); } public function symlink($originDir, $targetDir, $copyOnWindows = false) { self::assertFunctionExists('symlink'); if ('\\' === \DIRECTORY_SEPARATOR) { $originDir = strtr($originDir, '/', '\\'); $targetDir = strtr($targetDir, '/', '\\'); if ($copyOnWindows) { $this->mirror($originDir, $targetDir); return; } } $this->mkdir(\dirname($targetDir)); if (is_link($targetDir)) { if (readlink($targetDir) === $originDir) { return; } $this->remove($targetDir); } if (!self::box('symlink', $originDir, $targetDir)) { $this->linkException($originDir, $targetDir, 'symbolic'); } } public function hardlink($originFile, $targetFiles) { self::assertFunctionExists('link'); if (!$this->exists($originFile)) { throw new FileNotFoundException(null, 0, null, $originFile); } if (!is_file($originFile)) { throw new FileNotFoundException(sprintf('Origin file "%s" is not a file.', $originFile)); } foreach ($this->toIterable($targetFiles) as $targetFile) { if (is_file($targetFile)) { if (fileinode($originFile) === fileinode($targetFile)) { continue; } $this->remove($targetFile); } if (!self::box('link', $originFile, $targetFile)) { $this->linkException($originFile, $targetFile, 'hard'); } } } private function linkException(string $origin, string $target, string $linkType) { if (self::$lastError) { if ('\\' === \DIRECTORY_SEPARATOR && str_contains(self::$lastError, 'error code(1314)')) { throw new IOException(sprintf('Unable to create "%s" link due to error code 1314: \'A required privilege is not held by the client\'. Do you have the required Administrator-rights?', $linkType), 0, null, $target); } } throw new IOException(sprintf('Failed to create "%s" link from "%s" to "%s".', $linkType, $origin, $target), 0, null, $target); } public function readlink($path, $canonicalize = false) { if (!$canonicalize && !is_link($path)) { return null; } if ($canonicalize) { if (!$this->exists($path)) { return null; } if ('\\' === \DIRECTORY_SEPARATOR && \PHP_VERSION_ID < 70410) { $path = readlink($path); } return realpath($path); } if ('\\' === \DIRECTORY_SEPARATOR && \PHP_VERSION_ID < 70400) { return realpath($path); } return readlink($path); } public function makePathRelative($endPath, $startPath) { if (!$this->isAbsolutePath($startPath)) { throw new InvalidArgumentException(sprintf('The start path "%s" is not absolute.', $startPath)); } if (!$this->isAbsolutePath($endPath)) { throw new InvalidArgumentException(sprintf('The end path "%s" is not absolute.', $endPath)); } // Normalize separators on Windows if ('\\' === \DIRECTORY_SEPARATOR) { $endPath = str_replace('\\', '/', $endPath); $startPath = str_replace('\\', '/', $startPath); } $splitDriveLetter = function ($path) { return (\strlen($path) > 2 && ':' === $path[1] && '/' === $path[2] && ctype_alpha($path[0])) ? [substr($path, 2), strtoupper($path[0])] : [$path, null]; }; $splitPath = function ($path) { $result = []; foreach (explode('/', trim($path, '/')) as $segment) { if ('..' === $segment) { array_pop($result); } elseif ('.' !== $segment && '' !== $segment) { $result[] = $segment; } } return $result; }; [$endPath, $endDriveLetter] = $splitDriveLetter($endPath); [$startPath, $startDriveLetter] = $splitDriveLetter($startPath); $startPathArr = $splitPath($startPath); $endPathArr = $splitPath($endPath); if ($endDriveLetter && $startDriveLetter && $endDriveLetter != $startDriveLetter) { // End path is on another drive, so no relative path exists return $endDriveLetter.':/'.($endPathArr ? implode('/', $endPathArr).'/' : ''); } // Find for which directory the common path stops $index = 0; while (isset($startPathArr[$index]) && isset($endPathArr[$index]) && $startPathArr[$index] === $endPathArr[$index]) { ++$index; } // Determine how deep the start path is relative to the common path (ie, "web/bundles" = 2 levels) if (1 === \count($startPathArr) && '' === $startPathArr[0]) { $depth = 0; } else { $depth = \count($startPathArr) - $index; } // Repeated "../" for each level need to reach the common path $traverser = str_repeat('../', $depth); $endPathRemainder = implode('/', \array_slice($endPathArr, $index)); // Construct $endPath from traversing to the common path, then to the remaining $endPath $relativePath = $traverser.('' !== $endPathRemainder ? $endPathRemainder.'/' : ''); return '' === $relativePath ? './' : $relativePath; } public function mirror($originDir, $targetDir, \Traversable $iterator = null, $options = []) { $targetDir = rtrim($targetDir, '/\\'); $originDir = rtrim($originDir, '/\\'); $originDirLen = \strlen($originDir); if (!$this->exists($originDir)) { throw new IOException(sprintf('The origin directory specified "%s" was not found.', $originDir), 0, null, $originDir); } // Iterate in destination folder to remove obsolete entries if ($this->exists($targetDir) && isset($options['delete']) && $options['delete']) { $deleteIterator = $iterator; if (null === $deleteIterator) { $flags = \FilesystemIterator::SKIP_DOTS; $deleteIterator = new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($targetDir, $flags), \RecursiveIteratorIterator::CHILD_FIRST); } $targetDirLen = \strlen($targetDir); foreach ($deleteIterator as $file) { $origin = $originDir.substr($file->getPathname(), $targetDirLen); if (!$this->exists($origin)) { $this->remove($file); } } } $copyOnWindows = $options['copy_on_windows'] ?? false; if (null === $iterator) { $flags = $copyOnWindows ? \FilesystemIterator::SKIP_DOTS \| \FilesystemIterator::FOLLOW_SYMLINKS : \FilesystemIterator::SKIP_DOTS; $iterator = new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($originDir, $flags), \RecursiveIteratorIterator::SELF_FIRST); } $this->mkdir($targetDir); $filesCreatedWhileMirroring = []; foreach ($iterator as $file) { if ($file->getPathname() === $targetDir \|\| $file->getRealPath() === $targetDir \|\| isset($filesCreatedWhileMirroring[$file->getRealPath()])) { continue; } $target = $targetDir.substr($file->getPathname(), $originDirLen); $filesCreatedWhileMirroring[$target] = true; if (!$copyOnWindows && is_link($file)) { $this->symlink($file->getLinkTarget(), $target); } elseif (is_dir($file)) { $this->mkdir($target); } elseif (is_file($file)) { $this->copy($file, $target, $options['override'] ?? false); } else { throw new IOException(sprintf('Unable to guess "%s" file type.', $file), 0, null, $file); } } } public function isAbsolutePath($file) { if (null === $file) { @trigger_error(sprintf('Calling "%s()" with a null in the $file argument is deprecated since Symfony 4.4.', __METHOD__), \E_USER_DEPRECATED); } return '' !== (string) $file && (strspn($file, '/\\', 0, 1) \|\| (\strlen($file) > 3 && ctype_alpha($file[0]) && ':' === $file[1] && strspn($file, '/\\', 2, 1) ) \|\| null !== parse_url($file, \PHP_URL_SCHEME) ); } public function tempnam($dir, $prefix) { [$scheme, $hierarchy] = $this->getSchemeAndHierarchy($dir); // If no scheme or scheme is "file" or "gs" (Google Cloud) create temp file in local filesystem if (null === $scheme \|\| 'file' === $scheme \|\| 'gs' === $scheme) { $tmpFile = @tempnam($hierarchy, $prefix); // If tempnam failed or no scheme return the filename otherwise prepend the scheme if (false !== $tmpFile) { if (null !== $scheme && 'gs' !== $scheme) { return $scheme.'://'.$tmpFile; } return $tmpFile; } throw new IOException('A temporary file could not be created.'); } // Loop until we create a valid temp file or have reached 10 attempts for ($i = 0; $i < 10; ++$i) { // Create a unique filename $tmpFile = $dir.'/'.$prefix.uniqid(mt_rand(), true); // Use fopen instead of file_exists as some streams do not support stat // Use mode 'x+' to atomically check existence and create to avoid a TOCTOU vulnerability $handle = @fopen($tmpFile, 'x+'); // If unsuccessful restart the loop if (false === $handle) { continue; } // Close the file if it was successfully opened @fclose($handle); return $tmpFile; } throw new IOException('A temporary file could not be created.'); } public function dumpFile($filename, $content) { if (\is_array($content)) { @trigger_error(sprintf('Calling "%s()" with an array in the $content argument is deprecated since Symfony 4.3.', __METHOD__), \E_USER_DEPRECATED); } $dir = \dirname($filename); if (!is_dir($dir)) { $this->mkdir($dir); } // Will create a temp file with 0600 access rights // when the filesystem supports chmod. $tmpFile = $this->tempnam($dir, basename($filename)); try { if (false === @file_put_contents($tmpFile, $content)) { throw new IOException(sprintf('Failed to write file "%s".', $filename), 0, null, $filename); } @chmod($tmpFile, file_exists($filename) ? fileperms($filename) : 0666 & ~umask()); $this->rename($tmpFile, $filename, true); } finally { if (file_exists($tmpFile)) { @unlink($tmpFile); } } } public function appendToFile($filename, $content) { if (\is_array($content)) { @trigger_error(sprintf('Calling "%s()" with an array in the $content argument is deprecated since Symfony 4.3.', __METHOD__), \E_USER_DEPRECATED); } $dir = \dirname($filename); if (!is_dir($dir)) { $this->mkdir($dir); } if (false === @file_put_contents($filename, $content, \FILE_APPEND)) { throw new IOException(sprintf('Failed to write file "%s".', $filename), 0, null, $filename); } } private function toIterable($files): iterable { return is_iterable($files) ? $files : [$files]; } private function getSchemeAndHierarchy(string $filename): array { $components = explode('://', $filename, 2); return 2 === \count($components) ? [$components[0], $components[1]] : [null, $components[0]]; } private static function assertFunctionExists(string $func): void { if (!\function_exists($func)) { throw new IOException(sprintf('Unable to perform filesystem operation because the "%s()" function has been disabled.', $func)); } } private static function box(string $func, ...$args) { self::assertFunctionExists($func); self::$lastError = null; set_error_handler(__CLASS__.'::handleError'); try { $result = $func(...$args); restore_error_handler(); return $result; } catch (\Throwable $e) { } restore_error_handler(); throw $e; } public static function handleError(int $type, string $msg) { self::$lastError = $msg; } }

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