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Edit File: upload.php

<?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\avatar\driver;

/**
* Handles avatars uploaded to the board
*/
class upload extends \phpbb\avatar\driver\driver
{
	/**
	 * @var \phpbb\filesystem\filesystem_interface
	 */
	protected $filesystem;

/**
	* @var \phpbb\event\dispatcher_interface
	*/
	protected $dispatcher;

/**
	 * @var \phpbb\files\factory
	 */
	protected $files_factory;

/**
	* Construct a driver object
	*
	* @param \phpbb\config\config $config phpBB configuration
	* @param string $phpbb_root_path Path to the phpBB root
	* @param string $php_ext PHP file extension
	* @param \phpbb\filesystem\filesystem_interface $filesystem phpBB filesystem helper
	* @param \phpbb\path_helper $path_helper phpBB path helper
	* @param \phpbb\event\dispatcher_interface $dispatcher phpBB Event dispatcher object
	* @param \phpbb\files\factory $files_factory File classes factory
	* @param \phpbb\cache\driver\driver_interface $cache Cache driver
	*/
	public function __construct(\phpbb\config\config $config, $phpbb_root_path, $php_ext, \phpbb\filesystem\filesystem_interface $filesystem, \phpbb\path_helper $path_helper, \phpbb\event\dispatcher_interface $dispatcher, \phpbb\files\factory $files_factory, \phpbb\cache\driver\driver_interface $cache = null)
	{
		$this->config = $config;
		$this->phpbb_root_path = $phpbb_root_path;
		$this->php_ext = $php_ext;
		$this->filesystem = $filesystem;
		$this->path_helper = $path_helper;
		$this->dispatcher = $dispatcher;
		$this->files_factory = $files_factory;
		$this->cache = $cache;
	}

/**
	* {@inheritdoc}
	*/
	public function get_data($row)
	{
		$root_path = $this->path_helper->get_web_root_path();

return array(
			'src' => $root_path . 'download/file.' . $this->php_ext . '?avatar=' . $row['avatar'],
			'width' => $row['avatar_width'],
			'height' => $row['avatar_height'],
		);
	}

/**
	* {@inheritdoc}
	*/
	public function prepare_form($request, $template, $user, $row, &$error)
	{
		if (!$this->can_upload())
		{
			return false;
		}

$template->assign_vars(array(
			'S_UPLOAD_AVATAR_URL' => ($this->config['allow_avatar_remote_upload']) ? true : false,
			'AVATAR_UPLOAD_SIZE' => $this->config['avatar_filesize'],
			'AVATAR_ALLOWED_EXTENSIONS' => implode(',', preg_replace('/^/', '.', $this->allowed_extensions)),
		));

return true;
	}

/**
	* {@inheritdoc}
	*/
	public function process_form($request, $template, $user, $row, &$error)
	{
		if (!$this->can_upload())
		{
			return false;
		}

/** @var \phpbb\files\upload $upload */
		$upload = $this->files_factory->get('upload')
			->set_error_prefix('AVATAR_')
			->set_allowed_extensions($this->allowed_extensions)
			->set_max_filesize($this->config['avatar_filesize'])
			->set_allowed_dimensions(
				$this->config['avatar_min_width'],
				$this->config['avatar_min_height'],
				$this->config['avatar_max_width'],
				$this->config['avatar_max_height'])
			->set_disallowed_content((isset($this->config['mime_triggers']) ? explode('|', $this->config['mime_triggers']) : false));

$url = $request->variable('avatar_upload_url', '');
		$upload_file = $request->file('avatar_upload_file');

if (!empty($upload_file['name']))
		{
			$file = $upload->handle_upload('files.types.form', 'avatar_upload_file');
		}
		else if (!empty($this->config['allow_avatar_remote_upload']) && !empty($url))
		{
			if (!preg_match('#^(http|https|ftp)://#i', $url))
			{
				$url = 'http://' . $url;
			}

if (!function_exists('validate_data'))
			{
				require($this->phpbb_root_path . 'includes/functions_user.' . $this->php_ext);
			}

$validate_array = validate_data(
				array(
					'url' => $url,
				),
				array(
					'url' => array('string', true, 5, 255),
				)
			);

$error = array_merge($error, $validate_array);

if (!empty($error))
			{
				return false;
			}

// Do not allow specifying the port (see RFC 3986) or IP addresses
			// remote_upload() will do its own check for allowed filetypes
			if (!preg_match('#^(http|https|ftp)://(?:(.*?\.)*?[a-z0-9\-]+?\.[a-z]{2,4}|(?:\d{1,3}\.){3,5}\d{1,3}):?([0-9]*?).*?\.('. implode('|', $this->allowed_extensions) . ')$#i', $url) ||
				preg_match('@^(http|https|ftp)://[^/:?#]+:[0-9]+[/:?#]@i', $url) ||
				preg_match('#^(http|https|ftp)://(?:(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.){3}(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])#i', $url) ||
				preg_match('#^(http|https|ftp)://(?:(?:(?:[\dA-F]{1,4}:){6}(?:[\dA-F]{1,4}:[\dA-F]{1,4}|(?:(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.){3}(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])))|(?:::(?:[\dA-F]{1,4}:){0,5}(?:[\dA-F]{1,4}(?::[\dA-F]{1,4})?|(?:(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.){3}(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])))|(?:(?:[\dA-F]{1,4}:):(?:[\dA-F]{1,4}:){4}(?:[\dA-F]{1,4}:[\dA-F]{1,4}|(?:(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.){3}(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])))|(?:(?:[\dA-F]{1,4}:){1,2}:(?:[\dA-F]{1,4}:){3}(?:[\dA-F]{1,4}:[\dA-F]{1,4}|(?:(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.){3}(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])))|(?:(?:[\dA-F]{1,4}:){1,3}:(?:[\dA-F]{1,4}:){2}(?:[\dA-F]{1,4}:[\dA-F]{1,4}|(?:(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.){3}(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])))|(?:(?:[\dA-F]{1,4}:){1,4}:(?:[\dA-F]{1,4}:)(?:[\dA-F]{1,4}:[\dA-F]{1,4}|(?:(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.){3}(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])))|(?:(?:[\dA-F]{1,4}:){1,5}:(?:[\dA-F]{1,4}:[\dA-F]{1,4}|(?:(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.){3}(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])))|(?:(?:[\dA-F]{1,4}:){1,6}:[\dA-F]{1,4})|(?:(?:[\dA-F]{1,4}:){1,7}:)|(?:::))#i', $url))
			{
				$error[] = 'AVATAR_URL_INVALID';
				return false;
			}

$file = $upload->handle_upload('files.types.remote', $url);
		}
		else
		{
			return false;
		}

$prefix = $this->config['avatar_salt'] . '_';
		$file->clean_filename('avatar', $prefix, $row['id']);

// If there was an error during upload, then abort operation
		if (count($file->error))
		{
			$file->remove();
			$error = $file->error;
			return false;
		}

// Calculate new destination
		$destination = $this->config['avatar_path'];

// Adjust destination path (no trailing slash)
		if (substr($destination, -1, 1) == '/' || substr($destination, -1, 1) == '\\')
		{
			$destination = substr($destination, 0, -1);
		}

$destination = str_replace(array('../', '..\\', './', '.\\'), '', $destination);
		if ($destination && ($destination[0] == '/' || $destination[0] == "\\"))
		{
			$destination = '';
		}

$filedata = array(
			'filename'			=> $file->get('filename'),
			'filesize'			=> $file->get('filesize'),
			'mimetype'			=> $file->get('mimetype'),
			'extension'			=> $file->get('extension'),
			'physical_filename'	=> $file->get('realname'),
			'real_filename'		=> $file->get('uploadname'),
		);

/**
		* Before moving new file in place (and eventually overwriting the existing avatar with the newly uploaded avatar)
		*
		* @event core.avatar_driver_upload_move_file_before
		* @var	array	filedata			Array containing uploaded file data
		* @var	\phpbb\files\filespec file	Instance of filespec class
		* @var	string	destination			Destination directory where the file is going to be moved
		* @var	string	prefix				Prefix for the avatar filename
		* @var	array	row					Array with avatar row data
		* @var	array	error				Array of errors, if filled in by this event file will not be moved
		* @since 3.1.6-RC1
		* @changed 3.1.9-RC1 Added filedata
		* @changed 3.2.3-RC1 Added file
		*/
		$vars = array(
			'filedata',
			'file',
			'destination',
			'prefix',
			'row',
			'error',
		);
		extract($this->dispatcher->trigger_event('core.avatar_driver_upload_move_file_before', compact($vars)));

unset($filedata);

if (!count($error))
		{
			// Move file and overwrite any existing image
			$file->move_file($destination, true);
		}

// If there was an error during move, then clean up leftovers
		$error = array_merge($error, $file->error);
		if (count($error))
		{
			$file->remove();
			return false;
		}

// Delete current avatar if not overwritten
		$ext = substr(strrchr($row['avatar'], '.'), 1);
		if ($ext && $ext !== $file->get('extension'))
		{
			$this->delete($row);
		}

return array(
			'avatar' => $row['id'] . '_' . time() . '.' . $file->get('extension'),
			'avatar_width' => $file->get('width'),
			'avatar_height' => $file->get('height'),
		);
	}

/**
	* {@inheritdoc}
	*/
	public function prepare_form_acp($user)
	{
		return array(
			'allow_avatar_remote_upload'=> array('lang' => 'ALLOW_REMOTE_UPLOAD', 'validate' => 'bool',	'type' => 'radio:yes_no', 'explain' => true),
			'avatar_filesize'		=> array('lang' => 'MAX_FILESIZE',			'validate' => 'int:0',	'type' => 'number:0', 'explain' => true, 'append' => ' ' . $user->lang['BYTES']),
			'avatar_path'			=> array('lang' => 'AVATAR_STORAGE_PATH',	'validate' => 'rpath',	'type' => 'text:20:255', 'explain' => true),
		);
	}

/**
	* {@inheritdoc}
	*/
	public function delete($row)
	{

$error = array();
		$destination = $this->config['avatar_path'];
		$prefix = $this->config['avatar_salt'] . '_';
		$ext = substr(strrchr($row['avatar'], '.'), 1);
		$filename = $this->phpbb_root_path . $destination . '/' . $prefix . $row['id'] . '.' . $ext;

/**
		* Before deleting an existing avatar
		*
		* @event core.avatar_driver_upload_delete_before
		* @var	string	destination			Destination directory where the file is going to be deleted
		* @var	string	prefix				Prefix for the avatar filename
		* @var	array	row					Array with avatar row data
		* @var	array	error				Array of errors, if filled in by this event file will not be deleted
		* @since 3.1.6-RC1
		*/
		$vars = array(
			'destination',
			'prefix',
			'row',
			'error',
		);
		extract($this->dispatcher->trigger_event('core.avatar_driver_upload_delete_before', compact($vars)));

if (!count($error) && $this->filesystem->exists($filename))
		{
			try
			{
				$this->filesystem->remove($filename);
				return true;
			}
			catch (\phpbb\filesystem\exception\filesystem_exception $e)
			{
				// Fail is covered by return statement below
			}
		}

return false;
	}

/**
	* {@inheritdoc}
	*/
	public function get_template_name()
	{
		return 'ucp_avatar_options_upload.html';
	}

/**
	* Check if user is able to upload an avatar
	*
	* @return bool True if user can upload, false if not
	*/
	protected function can_upload()
	{
		return ($this->filesystem->exists($this->phpbb_root_path . $this->config['avatar_path']) && $this->filesystem->is_writable($this->phpbb_root_path . $this->config['avatar_path']) && (@ini_get('file_uploads') || strtolower(@ini_get('file_uploads')) == 'on'));
	}
}