mirror of
https://github.com/phpbb/phpbb.git
synced 2025-01-17 22:28:46 +01:00
333 lines
9.3 KiB
PHP
333 lines
9.3 KiB
PHP
<?php
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/**
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*
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* @package phpBB3
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* @copyright (c) 2005 phpBB Group
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* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2
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*
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*/
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/**
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* @ignore
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*/
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define('IN_PHPBB', true);
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$phpbb_root_path = (defined('PHPBB_ROOT_PATH')) ? PHPBB_ROOT_PATH : './../';
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$phpEx = substr(strrchr(__FILE__, '.'), 1);
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// Thank you sun.
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if (isset($_SERVER['CONTENT_TYPE']))
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{
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if ($_SERVER['CONTENT_TYPE'] === 'application/x-java-archive')
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{
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exit;
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}
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}
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else if (isset($_SERVER['HTTP_USER_AGENT']) && strpos($_SERVER['HTTP_USER_AGENT'], 'Java') !== false)
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{
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exit;
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}
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if (isset($_GET['avatar']))
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{
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require($phpbb_root_path . 'includes/startup.' . $phpEx);
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require($phpbb_root_path . 'config.' . $phpEx);
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if (!defined('PHPBB_INSTALLED') || empty($dbms) || empty($acm_type))
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{
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exit;
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}
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require($phpbb_root_path . 'includes/class_loader.' . $phpEx);
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require($phpbb_root_path . 'includes/db/' . $dbms . '.' . $phpEx);
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require($phpbb_root_path . 'includes/constants.' . $phpEx);
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require($phpbb_root_path . 'includes/functions.' . $phpEx);
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require($phpbb_root_path . 'includes/functions_download' . '.' . $phpEx);
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require($phpbb_root_path . 'includes/utf/utf_tools.' . $phpEx);
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$phpbb_class_loader_ext = new phpbb_class_loader('phpbb_ext_', $phpbb_root_path . 'ext/', ".$phpEx");
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$phpbb_class_loader_ext->register();
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$phpbb_class_loader = new phpbb_class_loader('phpbb_', $phpbb_root_path . 'includes/', ".$phpEx");
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$phpbb_class_loader->register();
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// set up caching
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$cache_factory = new phpbb_cache_factory($acm_type);
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$cache = $cache_factory->get_service();
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$phpbb_class_loader_ext->set_cache($cache->get_driver());
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$phpbb_class_loader->set_cache($cache->get_driver());
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$request = new phpbb_request();
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$db = new $sql_db();
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// Connect to DB
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if (!@$db->sql_connect($dbhost, $dbuser, $dbpasswd, $dbname, $dbport, false, false))
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{
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exit;
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}
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unset($dbpasswd);
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request_var('', 0, false, false, $request);
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// worst-case default
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$browser = strtolower($request->header('User-Agent', 'msie 6.0'));
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$config = new phpbb_config_db($db, $cache->get_driver(), CONFIG_TABLE);
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set_config(null, null, null, $config);
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set_config_count(null, null, null, $config);
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// load extensions
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$phpbb_extension_manager = new phpbb_extension_manager($db, EXT_TABLE, $phpbb_root_path, ".$phpEx", $cache->get_driver());
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$filename = request_var('avatar', '');
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$avatar_group = false;
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$exit = false;
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if (isset($filename[0]) && $filename[0] === 'g')
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{
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$avatar_group = true;
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$filename = substr($filename, 1);
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}
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// '==' is not a bug - . as the first char is as bad as no dot at all
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if (strpos($filename, '.') == false)
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{
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send_status_line(403, 'Forbidden');
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$exit = true;
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}
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if (!$exit)
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{
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$ext = substr(strrchr($filename, '.'), 1);
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$stamp = (int) substr(stristr($filename, '_'), 1);
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$filename = (int) $filename;
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$exit = set_modified_headers($stamp, $browser);
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}
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if (!$exit && !in_array($ext, array('png', 'gif', 'jpg', 'jpeg')))
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{
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// no way such an avatar could exist. They are not following the rules, stop the show.
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send_status_line(403, 'Forbidden');
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$exit = true;
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}
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if (!$exit)
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{
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if (!$filename)
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{
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// no way such an avatar could exist. They are not following the rules, stop the show.
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send_status_line(403, 'Forbidden');
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}
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else
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{
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send_avatar_to_browser(($avatar_group ? 'g' : '') . $filename . '.' . $ext, $browser);
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}
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}
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file_gc();
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}
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// implicit else: we are not in avatar mode
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include($phpbb_root_path . 'common.' . $phpEx);
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require($phpbb_root_path . 'includes/functions_download' . '.' . $phpEx);
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$download_id = request_var('id', 0);
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$mode = request_var('mode', '');
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$thumbnail = request_var('t', false);
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// Start session management, do not update session page.
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$user->session_begin(false);
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$auth->acl($user->data);
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$user->setup('viewtopic');
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if (!$download_id)
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{
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send_status_line(404, 'Not Found');
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trigger_error('NO_ATTACHMENT_SELECTED');
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}
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if (!$config['allow_attachments'] && !$config['allow_pm_attach'])
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{
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send_status_line(404, 'Not Found');
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trigger_error('ATTACHMENT_FUNCTIONALITY_DISABLED');
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}
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$sql = 'SELECT attach_id, in_message, post_msg_id, extension, is_orphan, poster_id, filetime
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FROM ' . ATTACHMENTS_TABLE . "
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WHERE attach_id = $download_id";
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$result = $db->sql_query_limit($sql, 1);
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$attachment = $db->sql_fetchrow($result);
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$db->sql_freeresult($result);
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if (!$attachment)
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{
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send_status_line(404, 'Not Found');
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trigger_error('ERROR_NO_ATTACHMENT');
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}
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if ((!$attachment['in_message'] && !$config['allow_attachments']) || ($attachment['in_message'] && !$config['allow_pm_attach']))
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{
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send_status_line(404, 'Not Found');
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trigger_error('ATTACHMENT_FUNCTIONALITY_DISABLED');
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}
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$row = array();
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if ($attachment['is_orphan'])
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{
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// We allow admins having attachment permissions to see orphan attachments...
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$own_attachment = ($auth->acl_get('a_attach') || $attachment['poster_id'] == $user->data['user_id']) ? true : false;
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if (!$own_attachment || ($attachment['in_message'] && !$auth->acl_get('u_pm_download')) || (!$attachment['in_message'] && !$auth->acl_get('u_download')))
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{
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send_status_line(404, 'Not Found');
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trigger_error('ERROR_NO_ATTACHMENT');
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}
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// Obtain all extensions...
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$extensions = $cache->obtain_attach_extensions(true);
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}
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else
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{
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if (!$attachment['in_message'])
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{
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//
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$sql = 'SELECT p.forum_id, f.forum_password, f.parent_id
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FROM ' . POSTS_TABLE . ' p, ' . FORUMS_TABLE . ' f
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WHERE p.post_id = ' . $attachment['post_msg_id'] . '
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AND p.forum_id = f.forum_id';
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$result = $db->sql_query_limit($sql, 1);
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$row = $db->sql_fetchrow($result);
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$db->sql_freeresult($result);
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$f_download = $auth->acl_get('f_download', $row['forum_id']);
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if ($auth->acl_get('u_download') && $f_download)
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{
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if ($row && $row['forum_password'])
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{
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// Do something else ... ?
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login_forum_box($row);
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}
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}
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else
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{
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send_status_line(403, 'Forbidden');
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trigger_error('SORRY_AUTH_VIEW_ATTACH');
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}
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}
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else
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{
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$row['forum_id'] = false;
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if (!$auth->acl_get('u_pm_download'))
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{
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send_status_line(403, 'Forbidden');
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trigger_error('SORRY_AUTH_VIEW_ATTACH');
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}
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// Check if the attachment is within the users scope...
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$sql = 'SELECT user_id, author_id
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FROM ' . PRIVMSGS_TO_TABLE . '
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WHERE msg_id = ' . $attachment['post_msg_id'];
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$result = $db->sql_query($sql);
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$allowed = false;
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while ($user_row = $db->sql_fetchrow($result))
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{
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if ($user->data['user_id'] == $user_row['user_id'] || $user->data['user_id'] == $user_row['author_id'])
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{
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$allowed = true;
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break;
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}
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}
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$db->sql_freeresult($result);
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if (!$allowed)
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{
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send_status_line(403, 'Forbidden');
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trigger_error('ERROR_NO_ATTACHMENT');
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}
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}
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// disallowed?
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$extensions = array();
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if (!extension_allowed($row['forum_id'], $attachment['extension'], $extensions))
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{
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send_status_line(404, 'Forbidden');
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trigger_error(sprintf($user->lang['EXTENSION_DISABLED_AFTER_POSTING'], $attachment['extension']));
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}
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}
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if (!download_allowed())
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{
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send_status_line(403, 'Forbidden');
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trigger_error($user->lang['LINKAGE_FORBIDDEN']);
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}
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$download_mode = (int) $extensions[$attachment['extension']]['download_mode'];
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// Fetching filename here to prevent sniffing of filename
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$sql = 'SELECT attach_id, is_orphan, in_message, post_msg_id, extension, physical_filename, real_filename, mimetype, filesize, filetime
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FROM ' . ATTACHMENTS_TABLE . "
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WHERE attach_id = $download_id";
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$result = $db->sql_query_limit($sql, 1);
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$attachment = $db->sql_fetchrow($result);
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$db->sql_freeresult($result);
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if (!$attachment)
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{
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send_status_line(404, 'Not Found');
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trigger_error('ERROR_NO_ATTACHMENT');
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}
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$attachment['physical_filename'] = utf8_basename($attachment['physical_filename']);
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$display_cat = $extensions[$attachment['extension']]['display_cat'];
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if (($display_cat == ATTACHMENT_CATEGORY_IMAGE || $display_cat == ATTACHMENT_CATEGORY_THUMB) && !$user->optionget('viewimg'))
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{
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$display_cat = ATTACHMENT_CATEGORY_NONE;
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}
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if ($display_cat == ATTACHMENT_CATEGORY_FLASH && !$user->optionget('viewflash'))
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{
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$display_cat = ATTACHMENT_CATEGORY_NONE;
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}
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if ($thumbnail)
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{
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$attachment['physical_filename'] = 'thumb_' . $attachment['physical_filename'];
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}
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else if (($display_cat == ATTACHMENT_CATEGORY_NONE/* || $display_cat == ATTACHMENT_CATEGORY_IMAGE*/) && !$attachment['is_orphan'] && !phpbb_http_byte_range($attachment['filesize']))
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{
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// Update download count
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$sql = 'UPDATE ' . ATTACHMENTS_TABLE . '
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SET download_count = download_count + 1
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WHERE attach_id = ' . $attachment['attach_id'];
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$db->sql_query($sql);
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}
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if ($display_cat == ATTACHMENT_CATEGORY_IMAGE && $mode === 'view' && (strpos($attachment['mimetype'], 'image') === 0) && ((strpos(strtolower($user->browser), 'msie') !== false) && (strpos(strtolower($user->browser), 'msie 8.0') === false)))
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{
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wrap_img_in_html(append_sid($phpbb_root_path . 'download/file.' . $phpEx, 'id=' . $attachment['attach_id']), $attachment['real_filename']);
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file_gc();
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}
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else
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{
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// Determine the 'presenting'-method
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if ($download_mode == PHYSICAL_LINK)
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{
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// This presenting method should no longer be used
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if (!@is_dir($phpbb_root_path . $config['upload_path']))
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{
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send_status_line(500, 'Internal Server Error');
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trigger_error($user->lang['PHYSICAL_DOWNLOAD_NOT_POSSIBLE']);
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}
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redirect($phpbb_root_path . $config['upload_path'] . '/' . $attachment['physical_filename']);
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file_gc();
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}
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else
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{
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send_file_to_browser($attachment, $config['upload_path'], $display_cat);
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file_gc();
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}
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}
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