php-phpbb/phpBB/includes/avatar/driver/remote.php

<?php
/**
*
* @package phpBB3
* @copyright (c) 2011 phpBB Group
* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2
*
*/

/**
* @ignore
*/
if (!defined('IN_PHPBB'))
{
	exit;
}

/**
* Handles avatars hosted remotely
* @package phpBB3
*/
class phpbb_avatar_driver_remote extends phpbb_avatar_driver
{
	/**
	* @inheritdoc
	*/
	public function get_data($row)
	{
		return array(
			'src' => $row['avatar'],
			'width' => $row['avatar_width'],
			'height' => $row['avatar_height'],
		);
	}

	/**
	* @inheritdoc
	*/
	public function prepare_form($request, $template, $row, &$error)
	{
		$template->assign_vars(array(
			'AVATAR_REMOTE_WIDTH' => ((in_array($row['avatar_type'], array(AVATAR_REMOTE, $this->get_name(), 'remote'))) && $row['avatar_width']) ? $row['avatar_width'] : $request->variable('avatar_remote_width', 0),
			'AVATAR_REMOTE_HEIGHT' => ((in_array($row['avatar_type'], array(AVATAR_REMOTE, $this->get_name(), 'remote'))) && $row['avatar_height']) ? $row['avatar_height'] : $request->variable('avatar_remote_width', 0),
			'AVATAR_REMOTE_URL' => ((in_array($row['avatar_type'], array(AVATAR_REMOTE, $this->get_name(), 'remote'))) && $row['avatar']) ? $row['avatar'] : '',
		));

		return true;
	}

	/**
	* @inheritdoc
	*/
	public function process_form($request, $template, $row, &$error)
	{
		$url = $request->variable('avatar_remote_url', '');
		$width = $request->variable('avatar_remote_width', 0);
		$height = $request->variable('avatar_remote_height', 0);

		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;
		}

		// Check if this url looks alright
		// This isn't perfect, but it's what phpBB 3.0 did, and might as well make sure everything is compatible
		if (!preg_match('#^(http|https|ftp)://(?:(.*?\.)*?[a-z0-9\-]+?\.[a-z]{2,4}|(?:\d{1,3}\.){3,5}\d{1,3}):?([0-9]*?).*?\.('. self::REGEX_ALLOWED_EXT . ')$#i', $url))
		{
			$error[] = 'AVATAR_URL_INVALID';
			return false;
		}

		// Make sure getimagesize works...
		if (function_exists('getimagesize'))
		{
			if (($width <= 0 || $height <= 0) && (($image_data = getimagesize($url)) === false))
			{
				$error[] = 'UNABLE_GET_IMAGE_SIZE';
				return false;
			}

			if (!empty($image_data) && ($image_data[0] <= 0 || $image_data[1] <= 0))
			{
				$error[] = 'AVATAR_NO_SIZE';
				return false;
			}

			$width = ($width && $height) ? $width : $image_data[0];
			$height = ($width && $height) ? $height : $image_data[1];
		}

		if ($width <= 0 || $height <= 0)
		{
			$error[] = 'AVATAR_NO_SIZE';
			return false;
		}

		if (!class_exists('fileupload'))
		{
			include($this->phpbb_root_path . 'includes/functions_upload' . $this->php_ext);
		}

		$types = fileupload::image_types();
		$extension = strtolower(filespec::get_extension($url));

		if (!empty($image_data) && (!isset($types[$image_data[2]]) || !in_array($extension, $types[$image_data[2]])))
		{
			if (!isset($types[$image_data[2]]))
			{
				$error[] = 'UNABLE_GET_IMAGE_SIZE';
			}
			else
			{
				$error[] = array('IMAGE_FILETYPE_MISMATCH', $types[$image_data[2]][0], $extension);
			}

			return false;
		}

		if ($this->config['avatar_max_width'] || $this->config['avatar_max_height'])
		{
			if ($width > $this->config['avatar_max_width'] || $height > $this->config['avatar_max_height'])
			{
				$error[] = array('AVATAR_WRONG_SIZE', $this->config['avatar_min_width'], $this->config['avatar_min_height'], $this->config['avatar_max_width'], $this->config['avatar_max_height'], $width, $height);
				return false;
			}
		}

		if ($this->config['avatar_min_width'] || $this->config['avatar_min_height'])
		{
			if ($width < $this->config['avatar_min_width'] || $height < $this->config['avatar_min_height'])
			{
				$error[] = array('AVATAR_WRONG_SIZE', $this->config['avatar_min_width'], $this->config['avatar_min_height'], $this->config['avatar_max_width'], $this->config['avatar_max_height'], $width, $height);
				return false;
			}
		}

		return array(
			'avatar' => $url,
			'avatar_width' => $width,
			'avatar_height' => $height,
		);
	}
}