1 files changed, 390 insertions, 0 deletions
diff --git a/phpBB/phpbb/files/upload.php b/phpBB/phpbb/files/upload.php
new file mode 100644
index 0000000000..50e15c9844
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+++ b/phpBB/phpbb/files/upload.php
@@ -0,0 +1,390 @@
+<?php
+/**
+ *
+ * This file is part of the phpBB Forum Software package.
+ *
+ * @copyright (c) phpBB Limited <https://www.phpbb.com>
+ * @license GNU General Public License, version 2 (GPL-2.0)
+ *
+ * For full copyright and license information, please see
+ * the docs/CREDITS.txt file.
+ *
+ */
+
+namespace phpbb\files;
+
+use phpbb\filesystem\filesystem_interface;
+use phpbb\language\language;
+use phpbb\request\request_interface;
+
+/**
+ * File upload class
+ * Init class (all parameters optional and able to be set/overwritten separately) - scope is global and valid for all uploads
+ */
+class upload
+{
+	/** @var array Allowed file extensions */
+	public $allowed_extensions = array();
+
+	/** @var array Disallowed content */
+	protected $disallowed_content = array('body', 'head', 'html', 'img', 'plaintext', 'a href', 'pre', 'script', 'table', 'title');
+
+	/** @var int Maximum filesize */
+	public $max_filesize = 0;
+
+	/** @var int Minimum width of images */
+	public $min_width = 0;
+
+	/** @var int Minimum height of images */
+	public $min_height = 0;
+
+	/** @var int Maximum width of images */
+	public $max_width = 0;
+
+	/** @var int Maximum height of images */
+	public $max_height = 0;
+
+	/** @var string Prefix for language variables of errors */
+	public $error_prefix = '';
+
+	/** @var int Timeout for remote upload */
+	public $upload_timeout = 6;
+
+	/** @var filesystem_interface */
+	protected $filesystem;
+
+	/** @var \phpbb\files\factory Files factory */
+	protected $factory;
+
+	/** @var \bantu\IniGetWrapper\IniGetWrapper ini_get() wrapper */
+	protected $php_ini;
+
+	/** @var \phpbb\language\language Language class */
+	protected $language;
+
+	/** @var request_interface Request class */
+	protected $request;
+
+	/**
+	 * Init file upload class.
+	 *
+	 * @param filesystem_interface $filesystem
+	 * @param factory $factory Files factory
+	 * @param language $language Language class
+	 * @param \bantu\IniGetWrapper\IniGetWrapper $php_ini ini_get() wrapper
+	 * @param request_interface $request Request class
+	 */
+	public function __construct(filesystem_interface $filesystem, factory $factory, language $language, \bantu\IniGetWrapper\IniGetWrapper $php_ini, request_interface $request)
+	{
+		$this->filesystem = $filesystem;
+		$this->factory = $factory;
+		$this->language = $language;
+		$this->php_ini = $php_ini;
+		$this->request = $request;
+	}
+
+	/**
+	 * Reset vars
+	 */
+	public function reset_vars()
+	{
+		$this->max_filesize = 0;
+		$this->min_width = $this->min_height = $this->max_width = $this->max_height = 0;
+		$this->error_prefix = '';
+		$this->allowed_extensions = array();
+		$this->disallowed_content = array();
+	}
+
+	/**
+	 * Set allowed extensions
+	 *
+	 * @param array $allowed_extensions Allowed file extensions
+	 *
+	 * @return \phpbb\files\upload This instance of upload
+	 */
+	public function set_allowed_extensions($allowed_extensions)
+	{
+		if ($allowed_extensions !== false && is_array($allowed_extensions))
+		{
+			$this->allowed_extensions = $allowed_extensions;
+		}
+
+		return $this;
+	}
+
+	/**
+	 * Set allowed dimensions
+	 *
+	 * @param int $min_width Minimum image width
+	 * @param int $min_height Minimum image height
+	 * @param int $max_width Maximum image width
+	 * @param int $max_height Maximum image height
+	 *
+	 * @return \phpbb\files\upload This instance of upload
+	 */
+	public function set_allowed_dimensions($min_width, $min_height, $max_width, $max_height)
+	{
+		$this->min_width = (int) $min_width;
+		$this->min_height = (int) $min_height;
+		$this->max_width = (int) $max_width;
+		$this->max_height = (int) $max_height;
+
+		return $this;
+	}
+
+	/**
+	 * Set maximum allowed file size
+	 *
+	 * @param int $max_filesize Maximum file size
+	 *
+	 * @return \phpbb\files\upload This instance of upload
+	 */
+	public function set_max_filesize($max_filesize)
+	{
+		if ($max_filesize !== false && (int) $max_filesize)
+		{
+			$this->max_filesize = (int) $max_filesize;
+		}
+
+		return $this;
+	}
+
+	/**
+	 * Set disallowed strings
+	 *
+	 * @param array $disallowed_content Disallowed content
+	 *
+	 * @return \phpbb\files\upload This instance of upload
+	 */
+	public function set_disallowed_content($disallowed_content)
+	{
+		if ($disallowed_content !== false && is_array($disallowed_content))
+		{
+			$this->disallowed_content = array_diff($disallowed_content, array(''));
+		}
+
+		return $this;
+	}
+
+	/**
+	 * Set error prefix
+	 *
+	 * @param string $error_prefix Prefix for language variables of errors
+	 *
+	 * @return \phpbb\files\upload This instance of upload
+	 */
+	public function set_error_prefix($error_prefix)
+	{
+		$this->error_prefix = $error_prefix;
+
+		return $this;
+	}
+
+	/**
+	 * Handle upload based on type
+	 *
+	 * @param string $type Upload type
+	 *
+	 * @return \phpbb\files\filespec|bool A filespec instance if upload was
+	 *		successful, false if there were issues or the type is not supported
+	 */
+	public function handle_upload($type)
+	{
+		$args = func_get_args();
+		array_shift($args);
+		$type_class = $this->factory->get($type)
+			->set_upload($this);
+
+		return (is_object($type_class)) ? call_user_func_array(array($type_class, 'upload'), $args) : false;
+	}
+
+	/**
+	 * Assign internal error
+	 *
+	 * @param string $errorcode Error code to assign
+	 *
+	 * @return string Error string
+	 * @access public
+	 */
+	public function assign_internal_error($errorcode)
+	{
+		switch ($errorcode)
+		{
+			case UPLOAD_ERR_INI_SIZE:
+				$max_filesize = $this->php_ini->getString('upload_max_filesize');
+				$unit = 'MB';
+
+				if (!empty($max_filesize))
+				{
+					$unit = strtolower(substr($max_filesize, -1, 1));
+					$max_filesize = (int) $max_filesize;
+
+					$unit = ($unit == 'k') ? 'KB' : (($unit == 'g') ? 'GB' : 'MB');
+				}
+
+				$error = (empty($max_filesize)) ? $this->language->lang($this->error_prefix . 'PHP_SIZE_NA') : $this->language->lang($this->error_prefix . 'PHP_SIZE_OVERRUN', $max_filesize, $this->language->lang($unit));
+			break;
+
+			case UPLOAD_ERR_FORM_SIZE:
+				$max_filesize = get_formatted_filesize($this->max_filesize, false);
+
+				$error = $this->language->lang($this->error_prefix . 'WRONG_FILESIZE', $max_filesize['value'], $max_filesize['unit']);
+			break;
+
+			case UPLOAD_ERR_PARTIAL:
+				$error = $this->language->lang($this->error_prefix . 'PARTIAL_UPLOAD');
+			break;
+
+			case UPLOAD_ERR_NO_FILE:
+				$error = $this->language->lang($this->error_prefix . 'NOT_UPLOADED');
+			break;
+
+			case UPLOAD_ERR_NO_TMP_DIR:
+			case UPLOAD_ERR_CANT_WRITE:
+				$error = $this->language->lang($this->error_prefix . 'NO_TEMP_DIR');
+			break;
+
+			case UPLOAD_ERR_EXTENSION:
+				$error = $this->language->lang($this->error_prefix . 'PHP_UPLOAD_STOPPED');
+			break;
+
+			default:
+				$error = false;
+			break;
+		}
+
+		return $error;
+	}
+
+	/**
+	 * Perform common file checks
+	 *
+	 * @param filespec $file Instance of filespec class
+	 */
+	public function common_checks($file)
+	{
+		// Filesize is too big or it's 0 if it was larger than the maxsize in the upload form
+		if ($this->max_filesize && ($file->get('filesize') > $this->max_filesize || $file->get('filesize') == 0))
+		{
+			$max_filesize = get_formatted_filesize($this->max_filesize, false);
+
+			$file->error[] = $this->language->lang($this->error_prefix . 'WRONG_FILESIZE', $max_filesize['value'], $max_filesize['unit']);
+		}
+
+		// check Filename
+		if (preg_match("#[\\/:*?\"<>|]#i", $file->get('realname')))
+		{
+			$file->error[] = $this->language->lang($this->error_prefix . 'INVALID_FILENAME', $file->get('realname'));
+		}
+
+		// Invalid Extension
+		if (!$this->valid_extension($file))
+		{
+			$file->error[] = $this->language->lang($this->error_prefix . 'DISALLOWED_EXTENSION', $file->get('extension'));
+		}
+
+		// MIME Sniffing
+		if (!$this->valid_content($file))
+		{
+			$file->error[] = $this->language->lang($this->error_prefix . 'DISALLOWED_CONTENT');
+		}
+	}
+
+	/**
+	 * Check for allowed extension
+	 *
+	 * @param filespec $file Instance of filespec class
+	 *
+	 * @return bool True if extension is allowed, false if not
+	 */
+	public function valid_extension($file)
+	{
+		return (in_array($file->get('extension'), $this->allowed_extensions)) ? true : false;
+	}
+
+	/**
+	 * Check for allowed dimension
+	 *
+	 * @param filespec $file Instance of filespec class
+	 *
+	 * @return bool True if dimensions are valid or no constraints set, false
+	 *			if not
+	 */
+	public function valid_dimensions($file)
+	{
+		if (!$this->max_width && !$this->max_height && !$this->min_width && !$this->min_height)
+		{
+			return true;
+		}
+
+		if (($file->get('width') > $this->max_width && $this->max_width) ||
+			($file->get('height') > $this->max_height && $this->max_height) ||
+			($file->get('width') < $this->min_width && $this->min_width) ||
+			($file->get('height') < $this->min_height && $this->min_height))
+		{
+			return false;
+		}
+
+		return true;
+	}
+
+	/**
+	 * Check if form upload is valid
+	 *
+	 * @param string $form_name Name of form
+	 *
+	 * @return bool True if form upload is valid, false if not
+	 */
+	public function is_valid($form_name)
+	{
+		$upload = $this->request->file($form_name);
+
+		return (!empty($upload) && $upload['name'] !== 'none');
+	}
+
+
+	/**
+	 * Check for bad content (IE mime-sniffing)
+	 *
+	 * @param filespec $file Instance of filespec class
+	 *
+	 * @return bool True if content is valid, false if not
+	 */
+	public function valid_content($file)
+	{
+		return ($file->check_content($this->disallowed_content));
+	}
+
+	/**
+	 * Get image type/extension mapping
+	 *
+	 * @return array Array containing the image types and their extensions
+	 */
+	static public function image_types()
+	{
+		$result = array(
+			IMAGETYPE_GIF		=> array('gif'),
+			IMAGETYPE_JPEG		=> array('jpg', 'jpeg'),
+			IMAGETYPE_PNG		=> array('png'),
+			IMAGETYPE_SWF		=> array('swf'),
+			IMAGETYPE_PSD		=> array('psd'),
+			IMAGETYPE_BMP		=> array('bmp'),
+			IMAGETYPE_TIFF_II	=> array('tif', 'tiff'),
+			IMAGETYPE_TIFF_MM	=> array('tif', 'tiff'),
+			IMAGETYPE_JPC		=> array('jpg', 'jpeg'),
+			IMAGETYPE_JP2		=> array('jpg', 'jpeg'),
+			IMAGETYPE_JPX		=> array('jpg', 'jpeg'),
+			IMAGETYPE_JB2		=> array('jpg', 'jpeg'),
+			IMAGETYPE_IFF		=> array('iff'),
+			IMAGETYPE_WBMP		=> array('wbmp'),
+			IMAGETYPE_XBM		=> array('xbm'),
+		);
+
+		if (defined('IMAGETYPE_SWC'))
+		{
+			$result[IMAGETYPE_SWC] = array('swc');
+		}
+
+		return $result;
+	}
+}