<?php
/** 
*
* @package attachment_mod
* @version $Id: posting_attachments.php,v 1.12 2006/09/06 14:26:29 acydburn Exp $
* @copyright (c) 2002 Meik Sievertsen
* @license http://opensource.org/licenses/gpl-license.php GNU Public License 
*
*/

/**
*/
if ( !defined('IN_PHPBB') )
{
	die('Hacking attempt');
	exit;
}

/**
* @package attachment_mod
* Base Class for Attaching
*/
class attach_parent
{
	var $post_attach = false;
	var $attach_filename = '';
	var $filename = '';
	var $type = '';
	var $extension = '';
	var $file_comment = '';
	var $num_attachments = 0; // number of attachments in message
	var $filesize = 0;
	var $filetime = 0;
	var $thumbnail = 0;
	var $page = 0; // On which page we are on ? This should be filled by child classes.

	// Switches
	var $add_attachment_body = 0;
	var $posted_attachments_body = 0;

	/**
	* Constructor
	*/
	function attach_parent()
	{
		global $HTTP_POST_VARS, $HTTP_POST_FILES;
		
		$this->add_attachment_body = get_var('add_attachment_body', 0);
		$this->posted_attachments_body = get_var('posted_attachments_body', 0);

		$this->file_comment					= get_var('filecomment', '');
		$this->attachment_id_list			= get_var('attach_id_list', array(0));
		$this->attachment_comment_list		= get_var('comment_list', array(''), true);
		$this->attachment_filesize_list		= get_var('filesize_list', array(0));
		$this->attachment_filetime_list		= get_var('filetime_list', array(0));
		$this->attachment_filename_list		= get_var('filename_list', array(''));
		$this->attachment_extension_list	= get_var('extension_list', array(''));
		$this->attachment_mimetype_list		= get_var('mimetype_list', array(''));

		$this->filename = (isset($HTTP_POST_FILES['fileupload']) && isset($HTTP_POST_FILES['fileupload']['name']) && $HTTP_POST_FILES['fileupload']['name'] != 'none') ? trim(stripslashes($HTTP_POST_FILES['fileupload']['name'])) : '';

		$this->attachment_list = get_var('attachment_list', array(''));
		$this->attachment_thumbnail_list = get_var('attach_thumbnail_list', array(0));
	}
	
	/**
	* Get Quota Limits
	*/
	function get_quota_limits($userdata_quota, $user_id = 0)
	{
		global $attach_config, $db;

		//
		// Define Filesize Limits (Prepare Quota Settings)
		// Priority: User, Group, Management
		//
		// This method is somewhat query intensive, but i think because this one is only executed while attaching a file, 
		// it does not make much sense to come up with an new db-entry.
		// Maybe i will change this in a future version, where you are able to disable the User Quota Feature at all (using
		// Default Limits for all Users/Groups)
		//

		// Change this to 'group;user' if you want to have first priority on group quota settings.
//		$priority = 'group;user';
		$priority = 'user;group';

		if ($userdata_quota['user_level'] == ADMIN)
		{
			$attach_config['pm_filesize_limit'] = 0; // Unlimited
			$attach_config['upload_filesize_limit'] = 0; // Unlimited
			return;
		}

		if ($this->page == PAGE_PRIVMSGS)
		{
			$quota_type = QUOTA_PM_LIMIT;
			$limit_type = 'pm_filesize_limit';
			$default = 'max_filesize_pm';
		}
		else
		{
			$quota_type = QUOTA_UPLOAD_LIMIT;
			$limit_type = 'upload_filesize_limit';
			$default = 'attachment_quota';
		}

		if (!$user_id)
		{
			$user_id = intval($userdata_quota['user_id']);
		}
		
		$priority = explode(';', $priority);
		$found = false;

		for ($i = 0; $i < sizeof($priority); $i++)
		{
			if (($priority[$i] == 'group') && (!$found))
			{
				// Get Group Quota, if we find one, we have our quota
				$sql = 'SELECT u.group_id 
					FROM ' . USER_GROUP_TABLE . ' u, ' . GROUPS_TABLE . ' g 
					WHERE g.group_single_user = 0 
						AND u.user_pending = 0
						AND u.group_id = g.group_id 
						AND u.user_id = ' . $user_id;
			
				if (!($result = $db->sql_query($sql)))
				{
					message_die(GENERAL_ERROR, 'Could not get User Group', '', __LINE__, __FILE__, $sql);
				}

				$rows = $db->sql_fetchrowset($result);
				$num_rows = $db->sql_numrows($result);
				$db->sql_freeresult($result);

				if ($num_rows > 0)
				{
					$group_id = array();

					for ($j = 0; $j < $num_rows; $j++)
					{
						$group_id[] = (int) $rows[$j]['group_id'];
					}

					$sql = 'SELECT l.quota_limit 
						FROM ' . QUOTA_TABLE . ' q, ' . QUOTA_LIMITS_TABLE . ' l
						WHERE q.group_id IN (' . implode(', ', $group_id) . ') 
							AND q.group_id <> 0
							AND q.quota_type = ' . $quota_type . ' 
							AND q.quota_limit_id = l.quota_limit_id
						ORDER BY l.quota_limit DESC 
						LIMIT 1';

					if (!($result = $db->sql_query($sql)))
					{
						message_die(GENERAL_ERROR, 'Could not get Group Quota', '', __LINE__, __FILE__, $sql);
					}

					if ($db->sql_numrows($result) > 0)
					{
						$row = $db->sql_fetchrow($result);
						$attach_config[$limit_type] = $row['quota_limit'];
						$found = TRUE;
					}
					$db->sql_freeresult($result);
				}
			}

			if ($priority[$i] == 'user' && !$found)
			{
				// Get User Quota, if the user is not in a group or the group has no quotas
				$sql = 'SELECT l.quota_limit 
					FROM ' . QUOTA_TABLE . ' q, ' . QUOTA_LIMITS_TABLE . ' l
					WHERE q.user_id = ' . $user_id . '
						AND q.user_id <> 0
						AND q.quota_type = ' . $quota_type . ' 
						AND q.quota_limit_id = l.quota_limit_id
					LIMIT 1';

				if (!($result = $db->sql_query($sql)))
				{
					message_die(GENERAL_ERROR, 'Could not get User Quota', '', __LINE__, __FILE__, $sql);
				}

				if ($db->sql_numrows($result) > 0)
				{
					$row = $db->sql_fetchrow($result);
					$attach_config[$limit_type] = $row['quota_limit'];
					$found = TRUE;
				}
				$db->sql_freeresult($result);
			}
		}

		if (!$found)
		{
			// Set Default Quota Limit
			$quota_id = ($quota_type == QUOTA_UPLOAD_LIMIT) ? $attach_config['default_upload_quota'] : $attach_config['default_pm_quota'];

			if ($quota_id == 0)
			{
				$attach_config[$limit_type] = $attach_config[$default];
			}
			else
			{
				$sql = 'SELECT quota_limit 
					FROM ' . QUOTA_LIMITS_TABLE . '
					WHERE quota_limit_id = ' . (int) $quota_id . ' 
					LIMIT 1';

				if (!($result = $db->sql_query($sql)))
				{
					message_die(GENERAL_ERROR, 'Could not get Default Quota Limit', '', __LINE__, __FILE__, $sql);
				}
	
				if ($db->sql_numrows($result) > 0)
				{
					$row = $db->sql_fetchrow($result);
					$attach_config[$limit_type] = $row['quota_limit'];
				}
				else
				{
					$attach_config[$limit_type] = $attach_config[$default];
				}
				$db->sql_freeresult($result);
			}
		}

		// Never exceed the complete Attachment Upload Quota
		if ($quota_type == QUOTA_UPLOAD_LIMIT)
		{
			if ($attach_config[$limit_type] > $attach_config[$default])
			{
				$attach_config[$limit_type] = $attach_config[$default];
			}
		}
	}
	
	/**
	* Handle all modes... (intern)
	* @private
	*/
	function handle_attachments($mode)
	{
		global $is_auth, $attach_config, $refresh, $HTTP_POST_VARS, $post_id, $submit, $preview, $error, $error_msg, $lang, $template, $userdata, $db;
		
		// 
		// ok, what shall we do ;)
		//

		// Some adjustments for PM's
		if ($this->page == PAGE_PRIVMSGS)
		{
			global $privmsg_id;

			$post_id = $privmsg_id;

			if ($mode == 'post')
			{
				$mode = 'newtopic';
			}
			else if ($mode == 'edit')
			{
				$mode = 'editpost';
			}

			if ($userdata['user_level'] == ADMIN)
			{
				$is_auth['auth_attachments'] = 1;
				$max_attachments = ADMIN_MAX_ATTACHMENTS;
			}
			else
			{
				$is_auth['auth_attachments'] = intval($attach_config['allow_pm_attach']);
				$max_attachments = intval($attach_config['max_attachments_pm']);
			}

			$sql_id = 'privmsgs_id';
		}
		else
		{
			if ($userdata['user_level'] == ADMIN)
			{
				$max_attachments = ADMIN_MAX_ATTACHMENTS;
			}
			else
			{
				$max_attachments = intval($attach_config['max_attachments']);
			}

			$sql_id = 'post_id';
		}
		
		// nothing, if the user is not authorized or attachment mod disabled
		if (intval($attach_config['disable_mod']) || !$is_auth['auth_attachments'])
		{
			return false;
		}

		// Get those attach_ids allowed for lists from the attachments table...
		$allowed_attach_ids = array();
		if ($post_id)
		{
			$sql = 'SELECT attach_id
				FROM ' . ATTACHMENTS_TABLE . '
				WHERE ' . $sql_id . ' = ' . $post_id;
			$result = $db->sql_query($sql);

			if (!$result)
			{
				message_die(GENERAL_ERROR, 'Unable to get attachment information.', '', __LINE__, __FILE__, $sql);
			}

			while ($_row = $db->sql_fetchrow($result))
			{
				$allowed_attach_ids[] = $_row['attach_id'];
			}
			$db->sql_freeresult($result);
		}

		// Check the submitted variables - do not allow wrong values
		$actual_id_list				= get_var('attach_id_list', array(0));
		$actual_list				= get_var('attachment_list', array(''));

		for ($i = 0; $i < sizeof($actual_list); $i++)
		{
			if ($actual_id_list[$i] != 0)
			{
				if (!in_array($actual_id_list[$i], $allowed_attach_ids))
				{
					message_die(CRITICAL_ERROR, 'You tried to change an attachment you do not have access to', '');
				}
			}
			else
			{
				// Really new attachment? If so, the filename should be unique...
				if (physical_filename_already_stored($actual_list[$i]))
				{
					message_die(CRITICAL_ERROR, 'You tried to change an attachment you do not have access to', '');
				}
			}
		}

		// Init Vars
		$attachments = array();

		if (!$refresh)
		{
			$add = (isset($HTTP_POST_VARS['add_attachment'])) ? TRUE : FALSE;
			$delete = (isset($HTTP_POST_VARS['del_attachment'])) ? TRUE : FALSE;
			$edit = (isset($HTTP_POST_VARS['edit_comment'])) ? TRUE : FALSE;
			$update_attachment = (isset($HTTP_POST_VARS['update_attachment'])) ? TRUE : FALSE;
			$del_thumbnail = (isset($HTTP_POST_VARS['del_thumbnail'])) ? TRUE : FALSE;

			$add_attachment_box = (!empty($HTTP_POST_VARS['add_attachment_box'])) ? TRUE : FALSE;
			$posted_attachments_box = (!empty($HTTP_POST_VARS['posted_attachments_box'])) ? TRUE : FALSE;

			$refresh = $add || $delete || $edit || $del_thumbnail || $update_attachment || $add_attachment_box || $posted_attachments_box;
		}

		// Get Attachments
		if ($this->page == PAGE_PRIVMSGS)
		{
			$attachments = get_attachments_from_pm($post_id);
		}
		else
		{
			$attachments = get_attachments_from_post($post_id);
		}

		if ($this->page == PAGE_PRIVMSGS)
		{
			if ($userdata['user_level'] == ADMIN)
			{
				$auth = TRUE;
			}
			else
			{
				$auth = (intval($attach_config['allow_pm_attach'])) ? TRUE : FALSE;
			}

			if (sizeof($attachments) == 1)
			{
				$template->assign_block_vars('switch_attachments',array());

				$template->assign_vars(array(
					'L_DELETE_ATTACHMENTS'		=> $lang['Delete_attachment'])
				);
			}
			else if (sizeof($attachments) > 0)
			{
				$template->assign_block_vars('switch_attachments',array());

				$template->assign_vars(array(
					'L_DELETE_ATTACHMENTS'		=> $lang['Delete_attachments'])
				);
			}
		}
		else
		{
			$auth = ($is_auth['auth_edit'] || $is_auth['auth_mod']) ? TRUE : FALSE;
		}

		if (!$submit && $mode == 'editpost' && $auth)
		{
			if (!$refresh && !$preview && !$error && !isset($HTTP_POST_VARS['del_poll_option']))
			{
				for ($i = 0; $i < sizeof($attachments); $i++)
				{
					$this->attachment_list[] = $attachments[$i]['physical_filename'];
					$this->attachment_comment_list[] = $attachments[$i]['comment'];
					$this->attachment_filename_list[] = $attachments[$i]['real_filename'];
					$this->attachment_extension_list[] = $attachments[$i]['extension'];
					$this->attachment_mimetype_list[] = $attachments[$i]['mimetype'];
					$this->attachment_filesize_list[] = $attachments[$i]['filesize'];
					$this->attachment_filetime_list[] = $attachments[$i]['filetime'];
					$this->attachment_id_list[] = $attachments[$i]['attach_id'];
					$this->attachment_thumbnail_list[] = $attachments[$i]['thumbnail'];
				}
			}
		}

		$this->num_attachments = sizeof($this->attachment_list);
		
		if ($submit && $mode != 'vote')
		{
			if ($mode == 'newtopic' || $mode == 'reply' || $mode == 'editpost')
			{
				if ($this->filename != '')
				{
					if ($this->num_attachments < intval($max_attachments))
					{
						$this->upload_attachment($this->page);

						if (!$error && $this->post_attach)
						{
							array_unshift($this->attachment_list, $this->attach_filename);
							array_unshift($this->attachment_comment_list, $this->file_comment);
							array_unshift($this->attachment_filename_list, $this->filename);
							array_unshift($this->attachment_extension_list, $this->extension);
							array_unshift($this->attachment_mimetype_list, $this->type);
							array_unshift($this->attachment_filesize_list, $this->filesize);
							array_unshift($this->attachment_filetime_list, $this->filetime);
							array_unshift($this->attachment_id_list, '0');
							array_unshift($this->attachment_thumbnail_list, $this->thumbnail);

							$this->file_comment = '';

							// This Variable is set to FALSE here, because the Attachment Mod enter Attachments into the
							// Database in two modes, one if the id_list is 0 and the second one if post_attach is true
							// Since post_attach is automatically switched to true if an Attachment got added to the filesystem,
							// but we are assigning an id of 0 here, we have to reset the post_attach variable to FALSE.
							//
							// This is very relevant, because it could happen that the post got not submitted, but we do not
							// know this circumstance here. We could be at the posting page or we could be redirected to the entered
							// post. :)
							$this->post_attach = FALSE;
						}
					}
					else
					{
						$error = TRUE;
						if (!empty($error_msg))
						{
							$error_msg .= '<br />';
						}
						$error_msg .= sprintf($lang['Too_many_attachments'], intval($max_attachments));
					}
				}
			}
		}

		if ($preview || $refresh || $error)
		{
			$delete_attachment = (isset($HTTP_POST_VARS['del_attachment'])) ? TRUE : FALSE;
			$delete_thumbnail = (isset($HTTP_POST_VARS['del_thumbnail'])) ? TRUE : FALSE;

			$add_attachment = (isset($HTTP_POST_VARS['add_attachment'])) ? TRUE : FALSE;
			$edit_attachment = (isset($HTTP_POST_VARS['edit_comment'])) ? TRUE : FALSE;
			$update_attachment = (isset($HTTP_POST_VARS['update_attachment']) ) ? TRUE : FALSE;

			// Perform actions on temporary attachments
			if ($delete_attachment || $delete_thumbnail)
			{
				// store old values
				$actual_id_list				= get_var('attach_id_list', array(0));
				$actual_comment_list		= get_var('comment_list', array(''), true);
				$actual_filename_list		= get_var('filename_list', array(''));
				$actual_extension_list		= get_var('extension_list', array(''));
				$actual_mimetype_list		= get_var('mimetype_list', array(''));
				$actual_filesize_list		= get_var('filesize_list', array(0));
				$actual_filetime_list		= get_var('filetime_list', array(0));
				
				$actual_list				= get_var('attachment_list', array(''));
				$actual_thumbnail_list		= get_var('attach_thumbnail_list', array(0));

				// clean values
				$this->attachment_list = array();
				$this->attachment_comment_list = array();
				$this->attachment_filename_list = array();
				$this->attachment_extension_list = array();
				$this->attachment_mimetype_list = array();
				$this->attachment_filesize_list = array();
				$this->attachment_filetime_list = array();
				$this->attachment_id_list = array();
				$this->attachment_thumbnail_list = array();

				// restore values :)
				if (isset($HTTP_POST_VARS['attachment_list']))
				{
					for ($i = 0; $i < sizeof($actual_list); $i++)
					{
						$restore = FALSE;
						$del_thumb = FALSE;

						if ($delete_thumbnail)
						{
							if (!isset($HTTP_POST_VARS['del_thumbnail'][$actual_list[$i]]))
							{
								$restore = TRUE;
							}
							else
							{
								$del_thumb = TRUE;
							}
						}

						if ($delete_attachment)
						{
							if (!isset($HTTP_POST_VARS['del_attachment'][$actual_list[$i]]))
							{
								$restore = TRUE;
							}
						}

						if ($restore)
						{
							$this->attachment_list[] = $actual_list[$i];
							$this->attachment_comment_list[] = $actual_comment_list[$i];
							$this->attachment_filename_list[] = $actual_filename_list[$i];
							$this->attachment_extension_list[] = $actual_extension_list[$i];
							$this->attachment_mimetype_list[] = $actual_mimetype_list[$i];
							$this->attachment_filesize_list[] = $actual_filesize_list[$i];
							$this->attachment_filetime_list[] = $actual_filetime_list[$i];
							$this->attachment_id_list[] = $actual_id_list[$i];
							$this->attachment_thumbnail_list[] = $actual_thumbnail_list[$i];
						}
						else if (!$del_thumb)
						{
							// delete selected attachment
							if ($actual_id_list[$i] == '0' )
							{
								unlink_attach($actual_list[$i]);
								
								if ($actual_thumbnail_list[$i] == 1)
								{
									unlink_attach($actual_list[$i], MODE_THUMBNAIL);
								}
							}
							else
							{
								delete_attachment($post_id, $actual_id_list[$i], $this->page);
							}
						}
						else if ($del_thumb)
						{
							// delete selected thumbnail
							$this->attachment_list[] = $actual_list[$i];
							$this->attachment_comment_list[] = $actual_comment_list[$i];
							$this->attachment_filename_list[] = $actual_filename_list[$i];
							$this->attachment_extension_list[] = $actual_extension_list[$i];
							$this->attachment_mimetype_list[] = $actual_mimetype_list[$i];
							$this->attachment_filesize_list[] = $actual_filesize_list[$i];
							$this->attachment_filetime_list[] = $actual_filetime_list[$i];
							$this->attachment_id_list[] = $actual_id_list[$i];
							$this->attachment_thumbnail_list[] = 0;

							if ($actual_id_list[$i] == 0)
							{
								unlink_attach($actual_list[$i], MODE_THUMBNAIL);
							}
							else
							{
								$sql = 'UPDATE ' . ATTACHMENTS_DESC_TABLE . '
									SET thumbnail = 0
									WHERE attach_id = ' . (int) $actual_id_list[$i];

								if (!($db->sql_query($sql)))
								{
									message_die(GENERAL_ERROR, 'Unable to update ' . ATTACHMENTS_DESC_TABLE . ' Table.', '', __LINE__, __FILE__, $sql);
								}
							}
						}
					}
				}
			}
			else if ($edit_attachment || $update_attachment || $add_attachment || $preview)
			{
				if ($edit_attachment)
				{
					$actual_comment_list = get_var('comment_list', array(''), true);
				
					$this->attachment_comment_list = array();

					for ($i = 0; $i < sizeof($this->attachment_list); $i++)
					{
						$this->attachment_comment_list[$i] = $actual_comment_list[$i];
					}
				}
		
				if ($update_attachment)
				{
					if ($this->filename == '')
					{
						$error = TRUE;
						if(!empty($error_msg))
						{
							$error_msg .= '<br />';
						}
						$error_msg .= $lang['Error_empty_add_attachbox']; 
					}

					$this->upload_attachment($this->page);

					if (!$error)
					{
						$actual_list = get_var('attachment_list', array(''));
						$actual_id_list = get_var('attach_id_list', array(0));
				
						$attachment_id = 0;
						$actual_element = 0;

						for ($i = 0; $i < sizeof($actual_id_list); $i++)
						{
							if (isset($HTTP_POST_VARS['update_attachment'][$actual_id_list[$i]]))
							{
								$attachment_id = intval($actual_id_list[$i]);
								$actual_element = $i;
							}
						}
	
						// Get current informations to delete the Old Attachment
						$sql = 'SELECT physical_filename, comment, thumbnail 
							FROM ' . ATTACHMENTS_DESC_TABLE . '
							WHERE attach_id = ' . (int) $attachment_id;

						if (!($result = $db->sql_query($sql)))
						{
							message_die(GENERAL_ERROR, 'Unable to select old Attachment Entry.', '', __LINE__, __FILE__, $sql);
						}

						if ($db->sql_numrows($result) != 1)
						{
							$error = TRUE;
							if(!empty($error_msg))
							{
								$error_msg .= '<br />';
							}
							$error_msg .= $lang['Error_missing_old_entry'];
						}

						$row = $db->sql_fetchrow($result);
						$db->sql_freeresult($result);

						$comment = (trim($this->file_comment) == '') ? trim($row['comment']) : trim($this->file_comment);

						// Update Entry
						$sql_ary = array(
							'physical_filename'		=> (string) basename($this->attach_filename),
							'real_filename'			=> (string) basename($this->filename),
							'comment'				=> (string) $comment,
							'extension'				=> (string) strtolower($this->extension),
							'mimetype'				=> (string) strtolower($this->type),
							'filesize'				=> (int) $this->filesize,
							'filetime'				=> (int) $this->filetime,
							'thumbnail'				=> (int) $this->thumbnail
						);
						
						$sql = 'UPDATE ' . ATTACHMENTS_DESC_TABLE . ' SET ' . attach_mod_sql_build_array('UPDATE', $sql_ary) . '
							WHERE attach_id = ' . (int) $attachment_id;
						
						if (!($db->sql_query($sql)))
						{
							message_die(GENERAL_ERROR, 'Unable to update the Attachment.', '', __LINE__, __FILE__, $sql);
						}

						// Delete the Old Attachment
						unlink_attach($row['physical_filename']);

						if (intval($row['thumbnail']) == 1)
						{
							unlink_attach($row['physical_filename'], MODE_THUMBNAIL);
						}
						//bt
						if ($this->attachment_extension_list[$actual_element] === TORRENT_EXT && $attachments[$actual_element]['tracker_status'])
						{
							global $phpbb_root_path, $phpEx;
							include_once($phpbb_root_path .'includes/functions_torrent.'. $phpEx);
							tracker_unregister($attachment_id);
						}
						//bt end

						// Make sure it is displayed
						$this->attachment_list[$actual_element] = $this->attach_filename;
						$this->attachment_comment_list[$actual_element] = $comment;
						$this->attachment_filename_list[$actual_element] = $this->filename;
						$this->attachment_extension_list[$actual_element] = $this->extension;
						$this->attachment_mimetype_list[$actual_element] = $this->type;
						$this->attachment_filesize_list[$actual_element] = $this->filesize;
						$this->attachment_filetime_list[$actual_element] = $this->filetime;
						$this->attachment_id_list[$actual_element] = $actual_id_list[$actual_element];
						$this->attachment_thumbnail_list[$actual_element] = $this->thumbnail;
						$this->file_comment = '';
					}
				}
				
				if (($add_attachment || $preview) && $this->filename != '')
				{
					if ($this->num_attachments < intval($max_attachments))
					{
						$this->upload_attachment($this->page);

						if (!$error)
						{
							array_unshift($this->attachment_list, $this->attach_filename);
							array_unshift($this->attachment_comment_list, $this->file_comment);
							array_unshift($this->attachment_filename_list, $this->filename);
							array_unshift($this->attachment_extension_list, $this->extension);
							array_unshift($this->attachment_mimetype_list, $this->type);
							array_unshift($this->attachment_filesize_list, $this->filesize);
							array_unshift($this->attachment_filetime_list, $this->filetime);
							array_unshift($this->attachment_id_list, '0');
							array_unshift($this->attachment_thumbnail_list, $this->thumbnail);

							$this->file_comment = '';
						}
					}
					else
					{
						$error = TRUE;
						if(!empty($error_msg))
						{
							$error_msg .= '<br />';
						}
						$error_msg .= sprintf($lang['Too_many_attachments'], intval($max_attachments)); 
					}
				}
			}
		}

		return TRUE;
	}

	/**
	* Basic Insert Attachment Handling for all Message Types
	*/
	function do_insert_attachment($mode, $message_type, $message_id)
	{
		global $db, $upload_dir;

		if (intval($message_id) < 0)
		{
			return FALSE;
		}

		if ($message_type == 'pm')
		{
			global $userdata, $to_userdata;

			$post_id = 0;
			$privmsgs_id = (int) $message_id;
			$user_id_1 = (int) $userdata['user_id'];
			$user_id_2 = (int) $to_userdata['user_id'];
			$sql_id = 'privmsgs_id';
		}
		else if ($message_type = 'post')
		{
			global $post_info, $userdata;

			$post_id = (int) $message_id;
			$privmsgs_id = 0;
			$user_id_1 = (isset($post_info['poster_id'])) ? (int) $post_info['poster_id'] : 0;
			$user_id_2 = 0;
			$sql_id = 'post_id';

			if (!$user_id_1)
			{
				$user_id_1 = (int) $userdata['user_id'];
			}
		}

		if ($mode == 'attach_list')
		{
			for ($i = 0; $i < sizeof($this->attachment_list); $i++)
			{
				if ($this->attachment_id_list[$i])
				{
					// Check if the attachment id is connected to the message
					$sql = 'SELECT attach_id
						FROM ' . ATTACHMENTS_TABLE . '
						WHERE ' . $sql_id . ' = ' . $$sql_id . '
							AND attach_id = ' . $this->attachment_id_list[$i];
					$result = $db->sql_query($sql);

					if (!$result)
					{
						message_die(GENERAL_ERROR, 'Unable to get attachment information.', '', __LINE__, __FILE__, $sql);
					}

					$row = $db->sql_fetchrow($result);
					$db->sql_freeresult($result);

					if (!$row)
					{
						message_die(GENERAL_ERROR, 'Tried to update an attachment you are not allowed to access', '');
					}
					
					// update entry in db if attachment already stored in db and filespace
					$sql = 'UPDATE ' . ATTACHMENTS_DESC_TABLE . " 
						SET comment = '" . attach_mod_sql_escape($this->attachment_comment_list[$i]) . "'
						WHERE attach_id = " . $this->attachment_id_list[$i];

					if (!($db->sql_query($sql)))
					{
						message_die(GENERAL_ERROR, 'Unable to update the File Comment.', '', __LINE__, __FILE__, $sql);
					}
				}
				else
				{
					// insert attachment into db 
					$sql_ary = array(
						'physical_filename'		=> (string) basename($this->attachment_list[$i]),
						'real_filename'			=> (string) basename($this->attachment_filename_list[$i]),
						'comment'				=> (string) $this->attachment_comment_list[$i],
						'extension'				=> (string) strtolower($this->attachment_extension_list[$i]),
						'mimetype'				=> (string) strtolower($this->attachment_mimetype_list[$i]),
						'filesize'				=> (int) $this->attachment_filesize_list[$i],
						'filetime'				=> (int) $this->attachment_filetime_list[$i],
						'thumbnail'				=> (int) $this->attachment_thumbnail_list[$i]
					);
					
					$sql = 'INSERT INTO ' . ATTACHMENTS_DESC_TABLE . ' ' . attach_mod_sql_build_array('INSERT', $sql_ary);

					if (!($db->sql_query($sql)))
					{
						message_die(GENERAL_ERROR, 'Couldn\'t store Attachment.<br />Your ' . $message_type . ' has been stored.', '', __LINE__, __FILE__, $sql);
					}

					$attach_id = $db->sql_nextid();
					//bt
					if ($this->attachment_extension_list[$i] === TORRENT_EXT && !defined('TORRENT_ATTACH_ID'))
					{
						define('TORRENT_ATTACH_ID', $attach_id);
					}
					//bt end
					
					$sql_ary = array(
						'attach_id'		=> (int) $attach_id,
						'post_id'		=> (int) $post_id,
						'privmsgs_id'	=> (int) $privmsgs_id,
						'user_id_1'		=> (int) $user_id_1,
						'user_id_2'		=> (int) $user_id_2
					);

					$sql = 'INSERT INTO ' . ATTACHMENTS_TABLE . ' ' . attach_mod_sql_build_array('INSERT', $sql_ary);
					
					if (!($db->sql_query($sql)))
					{
						message_die(GENERAL_ERROR, 'Couldn\'t store Attachment.<br />Your ' . $message_type . ' has been stored.', '', __LINE__, __FILE__, $sql);
					}
				}
			}
	
			return TRUE;
		}
	
		if ($mode == 'last_attachment')
		{
			if ($this->post_attach && !isset($HTTP_POST_VARS['update_attachment']))
			{
				// insert attachment into db, here the user submited it directly 
				$sql_ary = array(
					'physical_filename'		=> (string) basename($this->attach_filename),
					'real_filename'			=> (string) basename($this->filename),
					'comment'				=> (string) $this->file_comment,
					'extension'				=> (string) strtolower($this->extension),
					'mimetype'				=> (string) strtolower($this->type),
					'filesize'				=> (int) $this->filesize,
					'filetime'				=> (int) $this->filetime,
					'thumbnail'				=> (int) $this->thumbnail
				);
					
				$sql = 'INSERT INTO ' . ATTACHMENTS_DESC_TABLE . ' ' . attach_mod_sql_build_array('INSERT', $sql_ary);

				// Inform the user that his post has been created, but nothing is attached
				if (!($db->sql_query($sql)))
				{
					message_die(GENERAL_ERROR, 'Couldn\'t store Attachment.<br />Your ' . $message_type . ' has been stored.', '', __LINE__, __FILE__, $sql);
				}

				$attach_id = $db->sql_nextid();
				//bt
					if ($this->attachment_extension_list[$i] === TORRENT_EXT && !defined('TORRENT_ATTACH_ID'))
					{
						define('TORRENT_ATTACH_ID', $attach_id);
					}
					//bt end

				$sql_ary = array(
					'attach_id'		=> (int) $attach_id,
					'post_id'		=> (int) $post_id,
					'privmsgs_id'	=> (int) $privmsgs_id,
					'user_id_1'		=> (int) $user_id_1,
					'user_id_2'		=> (int) $user_id_2
				);

				$sql = 'INSERT INTO ' . ATTACHMENTS_TABLE . ' ' . attach_mod_sql_build_array('INSERT', $sql_ary);

				if (!($db->sql_query($sql)))
				{
					message_die(GENERAL_ERROR, 'Couldn\'t store Attachment.<br />Your ' . $message_type . ' has been stored.', '', __LINE__, __FILE__, $sql);
				}
			}
		}
	}

	/**
	* Attachment Mod entry switch/output (intern)
	* @private
	*/
	function display_attachment_bodies()
	{
		global $attach_config, $db, $is_auth, $lang, $mode, $phpEx, $template, $upload_dir, $userdata, $HTTP_POST_VARS, $forum_id;
		global $phpbb_root_path;
	
		// Choose what to display
		$value_add = $value_posted = 0;

		if (intval($attach_config['show_apcp']))
		{
			if (!empty($HTTP_POST_VARS['add_attachment_box']))
			{
				$value_add = ($this->add_attachment_body == 0) ? 1 : 0;
				$this->add_attachment_body = $value_add;
			}
			else
			{
				$value_add = ($this->add_attachment_body == 0) ? 0 : 1;
			}
		
			if (!empty($HTTP_POST_VARS['posted_attachments_box']))
			{
				$value_posted = ($this->posted_attachments_body == 0) ? 1 : 0;
				$this->posted_attachments_body = $value_posted;
			}
			else
			{
				$value_posted = ($this->posted_attachments_body == 0) ? 0 : 1;
			}
			$template->assign_block_vars('show_apcp', array());
		}
		else
		{
			$this->add_attachment_body = 1;
			$this->posted_attachments_body = 1;
		}

		$template->set_filenames(array(
			'attachbody' => 'posting_attach_body.tpl')
		);

		display_compile_cache_clear($template->files['attachbody'], 'attachbody');

		$s_hidden = '<input type="hidden" name="add_attachment_body" value="' . $value_add . '" />';
		$s_hidden .= '<input type="hidden" name="posted_attachments_body" value="' . $value_posted . '" />';

		if ($this->page == PAGE_PRIVMSGS)
		{
			$u_rules_id = 0;
		}
		else
		{
			$u_rules_id = $forum_id;
		}

		$template->assign_vars(array(
			'L_ATTACH_POSTING_CP'			=> $lang['Attach_posting_cp'],
			'L_ATTACH_POSTING_CP_EXPLAIN'	=> $lang['Attach_posting_cp_explain'],
			'L_OPTIONS'						=> $lang['Options'],
			'L_ADD_ATTACHMENT_TITLE'		=> $lang['Add_attachment_title'],
			'L_POSTED_ATTACHMENTS'			=> $lang['Posted_attachments'],
			'L_FILE_NAME'					=> $lang['File_name'],
			'L_FILE_COMMENT'				=> $lang['File_comment'],
			'RULES'							=> '<a href="' . append_sid($phpbb_root_path . "attach_rules.$phpEx?f=$u_rules_id") . '" target="_blank">' . $lang['Allowed_extensions_and_sizes'] . '</a>',

			'S_HIDDEN' => $s_hidden)
		);

		$attachments = array();

		if (sizeof($this->attachment_list) > 0)
		{
			if (intval($attach_config['show_apcp']))
			{
				$template->assign_block_vars('switch_posted_attachments', array());
			}

			for ($i = 0; $i < sizeof($this->attachment_list); $i++)
			{
				$hidden =  '<input type="hidden" name="attachment_list[]" value="' . $this->attachment_list[$i] . '" />';
				$hidden .= '<input type="hidden" name="filename_list[]" value="' . $this->attachment_filename_list[$i] . '" />';
				$hidden .= '<input type="hidden" name="extension_list[]" value="' . $this->attachment_extension_list[$i] . '" />';
				$hidden .= '<input type="hidden" name="mimetype_list[]" value="' . $this->attachment_mimetype_list[$i] . '" />';
				$hidden .= '<input type="hidden" name="filesize_list[]" value="' . $this->attachment_filesize_list[$i] . '" />';
				$hidden .= '<input type="hidden" name="filetime_list[]" value="' . $this->attachment_filetime_list[$i] . '" />';
				$hidden .= '<input type="hidden" name="attach_id_list[]" value="' . $this->attachment_id_list[$i] . '" />';
				$hidden .= '<input type="hidden" name="attach_thumbnail_list[]" value="' . $this->attachment_thumbnail_list[$i] . '" />';

				if (!$this->posted_attachments_body || sizeof($this->attachment_list) == 0)
				{
					$hidden .= '<input type="hidden" name="comment_list[]" value="' . $this->attachment_comment_list[$i] . '" />';
				}
				
				$template->assign_block_vars('hidden_row', array(
					'S_HIDDEN' => $hidden)
				);
			}
		}

		if ($this->add_attachment_body)
		{
			init_display_template('attachbody', '{ADD_ATTACHMENT_BODY}', 'add_attachment_body.tpl');
			
			$form_enctype = 'enctype="multipart/form-data"';

			$template->assign_vars(array(
				'L_ADD_ATTACH_TITLE'	=> $lang['Add_attachment_title'],
				'L_ADD_ATTACH_EXPLAIN'	=> $lang['Add_attachment_explain'],
				'L_ADD_ATTACHMENT'		=> $lang['Add_attachment'],

				'FILE_COMMENT'			=> $this->file_comment,
				'FILESIZE'				=> $attach_config['max_filesize'],
				'FILENAME'				=> $this->filename,

				'S_FORM_ENCTYPE'		=> $form_enctype)	
			);
		}

		if ($this->posted_attachments_body && sizeof($this->attachment_list) > 0)
		{
			init_display_template('attachbody', '{POSTED_ATTACHMENTS_BODY}', 'posted_attachments_body.tpl');

			$template->assign_vars(array(
				'L_POSTED_ATTACHMENTS'	=> $lang['Posted_attachments'],
				'L_UPDATE_COMMENT'		=> $lang['Update_comment'],
				'L_UPLOAD_NEW_VERSION'	=> $lang['Upload_new_version'],
				'L_DELETE_ATTACHMENT'	=> $lang['Delete_attachment'],
				'L_DELETE_THUMBNAIL'	=> $lang['Delete_thumbnail'],
				'L_OPTIONS'				=> $lang['Options'])
			);

			for ($i = 0; $i < sizeof($this->attachment_list); $i++)
			{
				if ($this->attachment_id_list[$i] == 0)
				{
					$download_link = $upload_dir . '/' . basename($this->attachment_list[$i]);
				}
				else
				{
					$download_link = append_sid($phpbb_root_path . 'download.' . $phpEx . '?id=' . $this->attachment_id_list[$i]);
				}

				$template->assign_block_vars('attach_row', array(
					'FILE_NAME'			=> $this->attachment_filename_list[$i],
					'ATTACH_FILENAME'	=> $this->attachment_list[$i],
					'FILE_COMMENT'		=> $this->attachment_comment_list[$i],
					'ATTACH_ID'			=> $this->attachment_id_list[$i],

					'U_VIEW_ATTACHMENT'	=> $download_link)
				);
				
				// Thumbnail there ? And is the User Admin or Mod ? Then present the 'Delete Thumbnail' Button
				if (intval($this->attachment_thumbnail_list[$i]) == 1 && ((isset($is_auth['auth_mod']) && $is_auth['auth_mod']) || $userdata['user_level'] == ADMIN))
				{
					$template->assign_block_vars('attach_row.switch_thumbnail', array());
				}

				if ($this->attachment_id_list[$i])
				{
					$template->assign_block_vars('attach_row.switch_update_attachment', array());
				}
			}
		}

		$template->assign_var_from_handle('ATTACHBOX', 'attachbody');
	}

	/**
	* Upload an Attachment to Filespace (intern)
	*/
	function upload_attachment()
	{
		global $HTTP_POST_FILES, $db, $HTTP_POST_VARS, $error, $error_msg, $lang, $attach_config, $userdata, $upload_dir, $forum_id;
		
		$this->post_attach = ($this->filename != '') ? TRUE : FALSE;

		if ($this->post_attach) 
		{
			$r_file = trim(basename(htmlspecialchars($this->filename)));
			$file = $HTTP_POST_FILES['fileupload']['tmp_name'];
			$this->type = $HTTP_POST_FILES['fileupload']['type'];

			if (isset($HTTP_POST_FILES['fileupload']['size']) && $HTTP_POST_FILES['fileupload']['size'] == 0)
			{
				message_die(GENERAL_ERROR, 'Tried to upload empty file');
			}

			// Opera add the name to the mime type
			$this->type = (strstr($this->type, '; name')) ? str_replace(strstr($this->type, '; name'), '', $this->type) : $this->type;
			$this->type = strtolower($this->type);
			$this->extension = strtolower(get_extension($this->filename));

			$this->filesize = @filesize($file);
			$this->filesize = intval($this->filesize);

			$sql = 'SELECT g.allow_group, g.max_filesize, g.cat_id, g.forum_permissions
				FROM ' . EXTENSION_GROUPS_TABLE . ' g, ' . EXTENSIONS_TABLE . " e
				WHERE g.group_id = e.group_id
					AND e.extension = '" . attach_mod_sql_escape($this->extension) . "'
				LIMIT 1";

			if (!($result = $db->sql_query($sql)))
			{
				message_die(GENERAL_ERROR, 'Could not query Extensions.', '', __LINE__, __FILE__, $sql);
			}

			$row = $db->sql_fetchrow($result);
			$db->sql_freeresult($result);

			$allowed_filesize = ($row['max_filesize']) ? $row['max_filesize'] : $attach_config['max_filesize'];
			$cat_id = intval($row['cat_id']);
			$auth_cache = trim($row['forum_permissions']);

			// check Filename
			if (preg_match("#[\\/:*?\"<>|]#i", $this->filename))
			{ 
				$error = TRUE;
				if(!empty($error_msg))
				{
					$error_msg .= '<br />';
				}
				$error_msg .= sprintf($lang['Invalid_filename'], htmlspecialchars($this->filename));
			}

			// check php upload-size
			if (!$error && $file == 'none') 
			{
				$error = TRUE;
				if(!empty($error_msg))
				{
					$error_msg .= '<br />';
				}
				$ini_val = ( phpversion() >= '4.0.0' ) ? 'ini_get' : 'get_cfg_var';
		
				$max_size = @$ini_val('upload_max_filesize');

				if ($max_size == '')
				{
					$error_msg .= $lang['Attachment_php_size_na']; 
				}
				else
				{
					$error_msg .= sprintf($lang['Attachment_php_size_overrun'], $max_size); 
				}
			}

			// Check Extension
			if (!$error && intval($row['allow_group']) == 0)
			{
				$error = TRUE;
				if(!empty($error_msg))
				{
					$error_msg .= '<br />';
				}
				$error_msg .= sprintf($lang['Disallowed_extension'], htmlspecialchars($this->extension));
			} 

			// Check Forum Permissions
			if (!$error && $this->page != PAGE_PRIVMSGS && $userdata['user_level'] != ADMIN && !is_forum_authed($auth_cache, $forum_id) && trim($auth_cache) != '')
			{
				$error = TRUE;
				if(!empty($error_msg))
				{
					$error_msg .= '<br />';
				}
				$error_msg .= sprintf($lang['Disallowed_extension_within_forum'], htmlspecialchars($this->extension));
			} 

			//bt
			// Check if user can post .torrent
			global $post_data;

			if (!$error && $this->extension === TORRENT_EXT && !$post_data['first_post'])
			{
				$error = TRUE;
				if (!empty($error_msg))
				{
					$error_msg .= '<br />';
				}
				$error_msg .= $lang['Allowed_only_1st_post_attach'];
			}
			//bt end
			// Upload File
			$this->thumbnail = 0;
				
			if (!$error) 
			{
				// Prepare Values
				$this->filetime = time(); 

				$this->filename = $r_file;

				// physical filename
				$this->attach_filename = strtolower($this->filename);
				
				// To re-add cryptic filenames, change this variable to true
				$cryptic = false;

				if (!$cryptic)
				{
					$this->attach_filename = html_entity_decode(trim(stripslashes($this->attach_filename)));
					$this->attach_filename = delete_extension($this->attach_filename);
					$this->attach_filename = str_replace(array(' ','-'), array('_','_'), $this->attach_filename);
					$this->attach_filename = str_replace('__', '_', $this->attach_filename);
					$this->attach_filename = str_replace(array(',', '.', '!', '?', 'ü', 'Ü', 'ö', 'Ö', 'ä', 'Ä', ';', ':', '@', "'", '"', '&'), array('', '', '', '', 'ue', 'ue', 'oe', 'oe', 'ae', 'ae', '', '', '', '', '', 'and'), $this->attach_filename);
					$this->attach_filename = str_replace(array('$', 'ß', '>','<','§','%','=','/','(',')','#','*','+',"\\",'{','}','[',']'), array('dollar', 'ss','greater','lower','paragraph','percent','equal','','','','','','','','','','',''), $this->attach_filename);
					// Remove non-latin characters
					$this->attach_filename = preg_replace("/([\xC2\xC3])([\x80-\xBF])/e", "chr(ord('\\1')<<6&0xC0|ord('\\2')&0x3F)", $this->attach_filename);
					$this->attach_filename = rawurlencode($this->attach_filename);
					$this->attach_filename = preg_replace("/(%[0-9A-F]{1,2})/i", '', $this->attach_filename);
					$this->attach_filename = trim($this->attach_filename);

					$new_filename = $this->attach_filename;

					if (!$new_filename)
					{
						$u_id = (intval($userdata['user_id']) == ANONYMOUS) ? 0 : intval($userdata['user_id']);
						$new_filename = $u_id . '_' . $this->filetime . '.' . $this->extension;
					}

					do
					{
						$this->attach_filename = $new_filename . '_' . substr(rand(), 0, 3) . '.' . $this->extension;
					}
					while (physical_filename_already_stored($this->attach_filename));

					unset($new_filename);
				}
				else
				{
					$u_id = (intval($userdata['user_id']) == ANONYMOUS) ? 0 : intval($userdata['user_id']);
					$this->attach_filename = $u_id . '_' . $this->filetime . '.' . $this->extension;
				}
				
				// Do we have to create a thumbnail ?
				if ($cat_id == IMAGE_CAT && intval($attach_config['img_create_thumbnail']))
				{
					$this->thumbnail = 1;
				}
			}

			if ($error) 
			{
				$this->post_attach = FALSE;
				return;
			}

			// Upload Attachment
			if (!$error) 
			{
				if (!(intval($attach_config['allow_ftp_upload'])))
				{
					// Descide the Upload method
					$ini_val = ( phpversion() >= '4.0.0' ) ? 'ini_get' : 'get_cfg_var';
		
					$safe_mode = @$ini_val('safe_mode');

					if (@$ini_val('open_basedir'))
					{
						if (@phpversion() < '4.0.3')
						{
							$upload_mode = 'copy';
						}
						else
						{
							$upload_mode = 'move';
						}
					}
					else if (@$ini_val('safe_mode'))
					{
						$upload_mode = 'move';
					}
					else
					{
						$upload_mode = 'copy';
					}
				}
				else
				{
					$upload_mode = 'ftp';
				}

				// Ok, upload the Attachment
				if (!$error)
				{
					$this->move_uploaded_attachment($upload_mode, $file);
				}
			}

			// Now, check filesize parameters
			if (!$error)
			{
				if ($upload_mode != 'ftp' && !$this->filesize)
				{
					$this->filesize = intval(@filesize($upload_dir . '/' . $this->attach_filename));
				}
			}

			// Check image type
			if ($cat_id == IMAGE_CAT || strpos($this->type, 'image/') === 0)
			{
				$img_info = @getimagesize($upload_dir . '/' . $this->attach_filename);

				// Do not display as image if we are not able to retrieve the info
				if ($img_info === false)
				{
					$error = TRUE;
					if(!empty($error_msg))
					{
						$error_msg .= '<br />';
					}
					$error_msg .= sprintf($lang['General_upload_error'], './' . $upload_dir . '/' . $this->attach_filename);
				}
				else
				{
					// check file type
					$types = array(
						1 => array('gif'),
						2 => array('jpg', 'jpeg'),
						3 => array('png'),
						4 => array('swf'),
						5 => array('psd'),
						6 => array('bmp'),
						7 => array('tif', 'tiff'),
						8 => array('tif', 'tiff'),
						9 => array('jpg', 'jpeg'),
						10 => array('jpg', 'jpeg'),
						11 => array('jpg', 'jpeg'),
						12 => array('jpg', 'jpeg'),
						13 => array('swc'),
						14 => array('iff'),
						15 => array('wbmp'),
						16 => array('xbm'),
					);

					if (!isset($types[$img_info[2]]))
					{
						$error = TRUE;
						if(!empty($error_msg))
						{
							$error_msg .= '<br />';
						}
						$error_msg .= sprintf($lang['General_upload_error'], './' . $upload_dir . '/' . $this->attach_filename);
					}
					else if (!in_array($this->extension, $types[$img_info[2]]))
					{
						$error = TRUE;
						if(!empty($error_msg))
						{
							$error_msg .= '<br />';
						}
						$error_msg .= sprintf($lang['General_upload_error'], './' . $upload_dir . '/' . $this->attach_filename);
						$error_msg .= "<br />Filetype mismatch: expected {$types[$img_info[2]][0]} but {$this->extension} given.";
					}
				}
			}

			// Check Image Size, if it's an image
			if (!$error && $userdata['user_level'] != ADMIN && $cat_id == IMAGE_CAT)
			{
				list($width, $height) = image_getdimension($upload_dir . '/' . $this->attach_filename);

				if ($width != 0 && $height != 0 && intval($attach_config['img_max_width']) != 0 && intval($attach_config['img_max_height']) != 0)
				{
					if ($width > intval($attach_config['img_max_width']) || $height > intval($attach_config['img_max_height']))
					{
						$error = TRUE;
						if(!empty($error_msg))
						{
							$error_msg .= '<br />';
						}
						$error_msg .= sprintf($lang['Error_imagesize'], intval($attach_config['img_max_width']), intval($attach_config['img_max_height']));
					}
				}
			}

			// check Filesize 
			if (!$error && $allowed_filesize != 0 && $this->filesize > $allowed_filesize && $userdata['user_level'] != ADMIN)
			{
				$size_lang = ($allowed_filesize >= 1048576) ? $lang['MB'] : ( ($allowed_filesize >= 1024) ? $lang['KB'] : $lang['Bytes'] );

				if ($allowed_filesize >= 1048576)
				{
					$allowed_filesize = round($allowed_filesize / 1048576 * 100) / 100;
				}
				else if ($allowed_filesize >= 1024)
				{
					$allowed_filesize = round($allowed_filesize / 1024 * 100) / 100;
				}
			
				$error = TRUE;
				if(!empty($error_msg))
				{
					$error_msg .= '<br />';
				}
				$error_msg .= sprintf($lang['Attachment_too_big'], $allowed_filesize, $size_lang); 
			}

			// Check our complete quota
			if ($attach_config['attachment_quota'])
			{
				$sql = 'SELECT sum(filesize) as total FROM ' . ATTACHMENTS_DESC_TABLE;

				if (!($result = $db->sql_query($sql)))
				{
					message_die(GENERAL_ERROR, 'Could not query total filesize', '', __LINE__, __FILE__, $sql);
				}

				$row = $db->sql_fetchrow($result);
				$db->sql_freeresult($result);

				$total_filesize = $row['total'];

				if (($total_filesize + $this->filesize) > $attach_config['attachment_quota'])
				{
					$error = TRUE;
					if(!empty($error_msg))
					{
						$error_msg .= '<br />';
					}
					$error_msg .= $lang['Attach_quota_reached'];
				}

			}

			$this->get_quota_limits($userdata);

			// Check our user quota
			if ($this->page != PAGE_PRIVMSGS)
			{
				if ($attach_config['upload_filesize_limit'])
				{
					$sql = 'SELECT attach_id 
						FROM ' . ATTACHMENTS_TABLE . '
						WHERE user_id_1 = ' . (int) $userdata['user_id'] . '
							AND privmsgs_id = 0
						GROUP BY attach_id';
		
					if (!($result = $db->sql_query($sql)))
					{
						message_die(GENERAL_ERROR, 'Couldn\'t query attachments', '', __LINE__, __FILE__, $sql);
					}
		
					$attach_ids = $db->sql_fetchrowset($result);
					$num_attach_ids = $db->sql_numrows($result);
					$db->sql_freeresult($result);

					$attach_id = array();

					for ($i = 0; $i < $num_attach_ids; $i++)
					{
						$attach_id[] = intval($attach_ids[$i]['attach_id']);
					}
			
					if ($num_attach_ids > 0)
					{
						// Now get the total filesize
						$sql = 'SELECT sum(filesize) as total
							FROM ' . ATTACHMENTS_DESC_TABLE . '
							WHERE attach_id IN (' . implode(', ', $attach_id) . ')';

						if (!($result = $db->sql_query($sql)))
						{
							message_die(GENERAL_ERROR, 'Could not query total filesize', '', __LINE__, __FILE__, $sql);
						}

						$row = $db->sql_fetchrow($result);
						$db->sql_freeresult($result);
						$total_filesize = $row['total'];
					}
					else
					{
						$total_filesize = 0;
					}

					if (($total_filesize + $this->filesize) > $attach_config['upload_filesize_limit'])
					{
						$upload_filesize_limit = $attach_config['upload_filesize_limit'];
						$size_lang = ($upload_filesize_limit >= 1048576) ? $lang['MB'] : ( ($upload_filesize_limit >= 1024) ? $lang['KB'] : $lang['Bytes'] );

						if ($upload_filesize_limit >= 1048576)
						{
							$upload_filesize_limit = round($upload_filesize_limit / 1048576 * 100) / 100;
						}
						else if ($upload_filesize_limit >= 1024)
						{
							$upload_filesize_limit = round($upload_filesize_limit / 1024 * 100) / 100;
						}
			
						$error = TRUE;
						if(!empty($error_msg))
						{
							$error_msg .= '<br />';
						}
						$error_msg .= sprintf($lang['User_upload_quota_reached'], $upload_filesize_limit, $size_lang);
					}
				}
			}
					
			// If we are at Private Messaging, check our PM Quota
			if ($this->page == PAGE_PRIVMSGS)
			{
				if ($attach_config['pm_filesize_limit'])
				{
					$total_filesize = get_total_attach_pm_filesize('from_user', $userdata['user_id']);

					if (($total_filesize + $this->filesize) > $attach_config['pm_filesize_limit']) 
					{
						$error = TRUE;
						if(!empty($error_msg))
						{
							$error_msg .= '<br />';
						}
						$error_msg .= $lang['Attach_quota_sender_pm_reached'];
					}
				}

				$to_user = (isset($HTTP_POST_VARS['username']) ) ? $HTTP_POST_VARS['username'] : '';
				
				// Check Receivers PM Quota
				if (!empty($to_user) && $userdata['user_level'] != ADMIN)
				{
					$u_data = get_userdata($to_user, true);

					$user_id = (int) $u_data['user_id'];
					$this->get_quota_limits($u_data, $user_id);
					
					if ($attach_config['pm_filesize_limit'])
					{
						$total_filesize = get_total_attach_pm_filesize('to_user', $user_id);
						
						if (($total_filesize + $this->filesize) > $attach_config['pm_filesize_limit']) 
						{
							$error = TRUE;
							if(!empty($error_msg))
							{
								$error_msg .= '<br />';
							}
							$error_msg .= sprintf($lang['Attach_quota_receiver_pm_reached'], $to_user);
						}
					}
				}
			}

			if ($error) 
			{
				unlink_attach($this->attach_filename);
				unlink_attach($this->attach_filename, MODE_THUMBNAIL);
				$this->post_attach = FALSE;
			}
		}
	}
	
	// Copy the temporary attachment to the right location (copy, move_uploaded_file or ftp)
	function move_uploaded_attachment($upload_mode, $file)
	{
		global $error, $error_msg, $lang, $upload_dir;

		if (!is_uploaded_file($file))
		{
			message_die(GENERAL_ERROR, 'Unable to upload file. The given source has not been uploaded.', __LINE__, __FILE__);
		}

		switch ($upload_mode)
		{
			case 'copy':
				
				if (!@copy($file, $upload_dir . '/' . basename($this->attach_filename)))
				{
					if (!@move_uploaded_file($file, $upload_dir . '/' . basename($this->attach_filename))) 
					{
						$error = TRUE;
						if(!empty($error_msg))
						{
							$error_msg .= '<br />';
						}
						$error_msg .= sprintf($lang['General_upload_error'], './' . $upload_dir . '/' . $this->attach_filename);
						return;
					}
				} 
				@chmod($upload_dir . '/' . basename($this->attach_filename), 0666);

			break;

			case 'move':

				if (!@move_uploaded_file($file, $upload_dir . '/' . basename($this->attach_filename)))
				{ 
					if (!@copy($file, $upload_dir . '/' . basename($this->attach_filename)))
					{
						$error = TRUE;
						if(!empty($error_msg))
						{
							$error_msg .= '<br />';
						}
						$error_msg .= sprintf($lang['General_upload_error'], './' . $upload_dir . '/' . $this->attach_filename);
						return;
					}
				} 
				@chmod($upload_dir . '/' . $this->attach_filename, 0666);

			break;

			case 'ftp':
				ftp_file($file, basename($this->attach_filename), $this->type);
			break;
		}

		if (!$error && $this->thumbnail == 1)
		{
			if ($upload_mode == 'ftp')
			{
				$source = $file;
				$dest_file = THUMB_DIR . '/t_' . basename($this->attach_filename);
			}
			else
			{
				$source = $upload_dir . '/' . basename($this->attach_filename);
				$dest_file = amod_realpath($upload_dir);
				$dest_file .= '/' . THUMB_DIR . '/t_' . basename($this->attach_filename);
			}

			if (!create_thumbnail($source, $dest_file, $this->type))
			{
				if (!$file || !create_thumbnail($file, $dest_file, $this->type))
				{
					$this->thumbnail = 0;
				}
			}
		}
	}
}

/**
* @package attachment_mod
* Attachment posting
*/
class attach_posting extends attach_parent
{
	/**
	* Constructor
	*/
	function attach_posting()
	{
		$this->attach_parent();
		$this->page = 0;
	}
	
	/**
	* Preview Attachments in Posts
	*/
	function preview_attachments()
	{
		global $attach_config, $is_auth, $userdata;

		if (intval($attach_config['disable_mod']) || !$is_auth['auth_attachments'])
		{
			return FALSE;
		}
	
		display_attachments_preview($this->attachment_list, $this->attachment_filesize_list, $this->attachment_filename_list, $this->attachment_comment_list, $this->attachment_extension_list, $this->attachment_thumbnail_list);
	}
	
	/**
	* Insert an Attachment into a Post (this is the second function called from posting.php)
	*/
	function insert_attachment($post_id)
	{
		global $db, $is_auth, $mode, $userdata, $error, $error_msg;

		// Insert Attachment ?
		if (!empty($post_id) && ($mode == 'newtopic' || $mode == 'reply' || $mode == 'editpost') && $is_auth['auth_attachments'])
		{
			$this->do_insert_attachment('attach_list', 'post', $post_id);
			$this->do_insert_attachment('last_attachment', 'post', $post_id);

			if ((sizeof($this->attachment_list) > 0 || $this->post_attach) && !isset($HTTP_POST_VARS['update_attachment']))
			{
				$sql = 'UPDATE ' . POSTS_TABLE . '
					SET post_attachment = 1
					WHERE post_id = ' . (int) $post_id;

				if (!($db->sql_query($sql)))
				{
					message_die(GENERAL_ERROR, 'Unable to update Posts Table.', '', __LINE__, __FILE__, $sql);
				}

				$sql = 'SELECT topic_id 
					FROM ' . POSTS_TABLE . '
					WHERE post_id = ' . (int) $post_id;
				
				if (!($result = $db->sql_query($sql)))
				{
					message_die(GENERAL_ERROR, 'Unable to select Posts Table.', '', __LINE__, __FILE__, $sql);
				}

				$row = $db->sql_fetchrow($result);
				$db->sql_freeresult($result);

				$sql = 'UPDATE ' . TOPICS_TABLE . '
					SET topic_attachment = 1
					WHERE topic_id = ' . (int) $row['topic_id'];

				if (!($db->sql_query($sql)))
				{
					message_die(GENERAL_ERROR, 'Unable to update Topics Table.', '', __LINE__, __FILE__, $sql);
				}
			}
		}
	}

	/**
	* Handle Attachments (Add/Delete/Edit/Show) - This is the first function called from every message handler
	*/
	function posting_attachment_mod()
	{
		global $mode, $confirm, $is_auth, $post_id, $delete, $refresh, $HTTP_POST_VARS;

		if (!$refresh)
		{
			$add_attachment_box = (!empty($HTTP_POST_VARS['add_attachment_box'])) ? TRUE : FALSE;
			$posted_attachments_box = (!empty($HTTP_POST_VARS['posted_attachments_box'])) ? TRUE : FALSE;

			$refresh = $add_attachment_box || $posted_attachments_box;
		}

		// Choose what to display
		$result = $this->handle_attachments($mode);

		if ($result === false)
		{
			return;
		}

		if ($confirm && ($delete || $mode == 'delete' || $mode == 'editpost') && ($is_auth['auth_delete'] || $is_auth['auth_mod']))
		{
			if ($post_id)
			{
				delete_attachment($post_id);
			}
		}

		$this->display_attachment_bodies();
	}

}

/**
* Entry Point
*/
function execute_posting_attachment_handling()
{
	global $attachment_mod;

	$attachment_mod['posting'] = new attach_posting();
	$attachment_mod['posting']->posting_attachment_mod();
}

?>