I need help with attachment hooks in vbulletin 4 (editing torrents on server)

[desi6.tv]

Hello,

I have been running this code from version 3.6.x through 3.8.x. It has been running fine with a few modifications here and there.

function xbt_attachdata_postsave($dm)
	{
		require_once('benc.php');
		global $vbulletin;
		if ($dm->attach['extension'] != 'torrent')
			return;
		$torrent = bdec(empty($dm->info['filedata']) ? file_get_contents(fetch_attachment_path($dm->attach['userid'], $dm->attach['attachmentid'])) : $dm->info['filedata']);
		if (!isset($torrent))
			return;
		$bt_info_hash = pack('H*', sha1($torrent['value']['info']['string']));
		$bt_name = $torrent['value']['info']['value']['name']['value'];
		$bt_tracker = $torrent['value']['announce']['value'];
		$vbulletin->db->query_write(sprintf("delete from xbt_sub_files where info_hash = '%s'", addslashes($bt_info_hash)));
		if ($torrent['value']['info']['value']['length'])
		{
			$name = $torrent['value']['info']['value']['name']['value'];
			$size = $torrent['value']['info']['value']['length']['value'];
			$vbulletin->db->query_write(sprintf("insert into xbt_sub_files (info_hash, name, size) values ('%s', '%s', '%.0f')",
				addslashes($bt_info_hash), addslashes($name), $size));
			$bt_size = $size;
		}
		else
		{
			$bt_size = 0;
			foreach ($torrent['value']['info']['value']['files']['value'] as $file)
			{
				$name = '';
				foreach ($file['value']['path']['value'] as $a)
					$name .= '/' . $a['value'];
				$size = $file['value']['length']['value'];
				$vbulletin->db->query_write(sprintf("insert into xbt_sub_files (info_hash, name, size) values ('%s', '%s', '%.0f')",
					addslashes($bt_info_hash), addslashes($name), $size));
				$bt_size += (float)$size;
			}
		}
		$vbulletin->db->query_write(sprintf("update %sattachment set bt_info_hash = '%s', bt_name = '%s', bt_size = '%.0f', bt_tracker = '%s' where attachmentid = %d",
			TABLE_PREFIX, addslashes($bt_info_hash), addslashes($bt_name), $bt_size, addslashes($bt_tracker), $dm->attach['attachmentid']));

	}

It basically extracts information from the torrent uploaded and stores it into respective tables in the database. This info is later used to generate and assign the torrent with a unique passkey.

I had this function running on the attachdata_postsave hook. For some reason, it does not seem to be working with vB 4. Can anyone help me with this piece of code ? I think the attachments are handeled differently in vB4. Please explain if possible.

Secondly, attachdata_delete hook is missing. What to do if I want to run some code in its place ?

--------------- Added [DATE]1265187247[/DATE] at [TIME]1265187247[/TIME] ---------------

i want to know how the attachment array is handled in vbulletin 4