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<?php |
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namespace florinp\messenger\libs; |
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use InvalidArgumentException; |
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class download { |
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/** |
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* File directory |
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* @var string |
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*/ |
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protected $directory; |
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/** |
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* File name |
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* @var string |
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*/ |
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protected $filename; |
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/** |
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* File pointer |
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* @var resource |
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*/ |
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protected $file; |
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/** |
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* File full path |
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* @var string |
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*/ |
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protected $full_path; |
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/** |
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* @param string $phpbb_root_path phpBB root path |
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*/ |
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public function __construct($phpbb_root_path) { |
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$this->directory = $phpbb_root_path.'store/messenger/files'; |
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} |
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/** |
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* Set the filename |
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* @param string $filename File name |
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* @throws InvalidArgumentException when the file not exist or is not readable |
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*/ |
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public function setFile($filename) { |
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$file_full_path = $this->directory.'/'.$filename; |
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if (!is_file($file_full_path)) { |
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throw new InvalidArgumentException("File does not exist"); |
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} else if (!is_readable($file_full_path)) { |
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throw new InvalidArgumentException("File to download is not readable."); |
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} |
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$this->filename = $filename; |
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$this->file = fopen($file_full_path, 'rb'); |
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$this->full_path = $file_full_path; |
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} |
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/** |
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* Get file mime type |
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* @return string |
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*/ |
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private function getMimeType() { |
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$fileExtension = pathinfo($this->filename, PATHINFO_EXTENSION); |
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$mimeTypeHelper = Mimetypes::getInstance(); |
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$mimeType = $mimeTypeHelper->fromExtension($fileExtension); |
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return !is_null($mimeType) ? $mimeType : 'application/force-download'; |
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} |
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/** |
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* Get file size |
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* @return int |
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*/ |
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private function getFileSize() { |
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$stat = fstat($this->file); |
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return $stat['size']; |
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} |
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/** |
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* Sends the download to browser |
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* @param bool|true $forceDownload |
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*/ |
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public function sendDownload($forceDownload = true) { |
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if (headers_sent()) { |
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throw new \RuntimeException("Cannot send file to the browser, since the headers were already sent"); |
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} |
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$mimeType = $this->getMimeType(); |
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$fileSize = $this->getFileSize(); |
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ini_set('display_errors', 1); |
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error_reporting(E_ALL); |
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header("Pragma: public"); |
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header("Expires: 0"); |
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header("Cache-Control: must-revalidate, post-check=0, pre-check=0"); |
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header("Cache-Control: private", false); |
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header("Content-Type: application/octet-stream"); |
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if ($forceDownload) { |
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header("Content-Disposition: attachment; filename=\"{$this->filename}\";"); |
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} else { |
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header("Content-Disposition: filename=\"{$this->filename}\";"); |
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} |
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header("Content-Transfer-Encoding: binary"); |
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header("Content-Length: {$fileSize}"); |
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@ob_clean(); |
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rewind($this->file); |
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fpassthru($this->file); |
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} |
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} |
This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently.
Both the
$myVar
assignment in line 1 and the$higher
assignment in line 2 are dead. The first because$myVar
is never used and the second because$higher
is always overwritten for every possible time line.