CWebDavIblock::DELETE

function DELETE($options)
{
	$options["~path"] = $this->_udecode($options["path"]);
	WDUnpackCookie();

	if (isset($options['path']))
	{
		$arPath = explode('/', $options['path']);  // ms excel tries to create and delete ~$FileName.xls
		$basename = array_pop($arPath);
		$basename = $this->CorrectName($this->_udecode($basename));
		array_push($arPath, $basename);
		$options['path'] = implode('/', $arPath);
	}

	if (!empty($options["~path"]) && $_SESSION["WEBDAV_DATA"]["PUT_MAC_OS"] == $options["~path"])
	{
		$this->IsDir($options);
		$_SESSION["WEBDAV_DATA"]["PUT_MAC_OS"] = "";
		WDPackCookie();
		if (intval($this->arParams["element_id"]) > 0)
		{
			$this->_ib_elm_delete($this->arParams["element_id"]);
			return "204 No Content";
		}
		return "404 Not Found";
	}
	else
	{
		$this->IsDir($options);

		//symlink logic
		list($contextType, $contextEntityId) = $this->getContextData();
		//we can't forward delete symlink. Only delete symlink section.
		$sectionData = $this->getSectionDataForLinkAnalyze($this->arParams['is_dir']? $this->arParams['dir_array']['ID'] : $this->arParams['element_array']['IBLOCK_SECTION_ID'], array(), false);
		if(CWebDavSymlinkHelper::isLink($contextType, $contextEntityId, $sectionData))
		{
			//we don't enable symlink mode, because we move to real trash
			$parentSectionData = CWebDavSymlinkHelper::getLinkData($contextType, $contextEntityId, $sectionData);
			if($parentSectionData)
			{
				$linkWebdav = new self($parentSectionData[self::UF_LINK_IBLOCK_ID], $this->base_url . $this->_path, array(
					'ROOT_SECTION_ID' => $parentSectionData[self::UF_LINK_ROOT_SECTION_ID],
				));

				return $linkWebdav->DELETE($options);
			}
			else
			{
				return "404 Not Found";
			}
		}

		if(!$this->CheckWebRights("DELETE", array('action' => 'delete', 'arElement' => $this->arParams), false))
			return $this->ThrowAccessDenied(__LINE__);

		$resLock = array();
		$lockedBy = $lockedDate = null;
		$resLock["LOCK_STATUS"] = CIBlockElement::WF_GetLockStatus($this->arParams["item_id"], $lockedBy, $lockedDate);
		if ($resLock['LOCK_STATUS'] == 'red' && !$GLOBALS['USER']->CanDoOperation('webdav_change_settings'))
			return $this->ThrowAccessDenied(__LINE__);

		//delete symlink. Not move to trash
		if(!empty($this->arParams['dir_array'][self::UF_LINK_SECTION_ID]))
		{
			$options['force'] = true;
		}

		if (!isset($options['force']) && ($this->arParams["is_dir"] === true || intval($this->arParams["element_id"]) > 0))
		{
			if ($trashID = $this->GetMetaID("TRASH"))
			{
				$item_id = $this->arParams['item_id'];

				$arSectionsChain = array();
				$bRootFounded = (empty($this->arRootSection) ? true : false);
				foreach (CWebDavSymlinkHelper::getNavChain($this->IBLOCK_ID, $this->arParams['parent_id']) as $res)
				{
					if (!$bRootFounded && $res["ID"] == $this->arRootSection["ID"])
					{
						$bRootFounded = true;
						continue;
					}
					if (!$bRootFounded)
						continue;

					$arSectionsChain[] = $res["ID"];
				}

				if ($item_id == $trashID && $this->arParams["is_dir"]) // empty trash
				{
					if($this->CheckWebRights("DESTROY", array('action' => 'destroy', 'arElement' => $this->arParams), false))
					{
						if(isset($this->attributes['user_id']) && ($this->attributes['user_id'] == $GLOBALS['USER']->GetID()))
						{
							//now we clean own bin so simple, so fast
							$this->runCleaningTrash($trashID);
						}
						else
						{
							//old cleaning. So-so
							$this->_delete_section($options["section_id"]);
						}
						$this->GetMetaID('TRASH'); // create
						return "204 No Content";
					}
					else
					{
						return $this->ThrowAccessDenied(__LINE__);
					}
				}
				elseif ( (!in_array($trashID, $arSectionsChain)) &&
						(mb_strpos($this->arParams['file_name'], "_$") !== 0) // ms office special files
				) // move to trash
				{
					return $this->_move_to_trash($options);
				}
			}
			else
			{
				return "404 Not Found";
			}
		}

		$this->IsDir($options);
		if(!$this->CheckWebRights("DESTROY", array('action' => 'destroy', 'arElement' => $this->arParams), false))
			return $this->ThrowAccessDenied(__LINE__);
		if ($this->arParams["is_dir"] === true)
		{
			if ($this->check_creator)
				return $this->ThrowAccessDenied(__LINE__);

			if($this->_delete_section($options["section_id"]) === true && !empty($this->arParams['dir_array'][self::UF_LINK_SECTION_ID]) && $this->attributes['user_id'])
			{
				if(!empty($this->attributes['user_id']))
				{
					CWebDavDiskDispatcher::sendChangeStatus($this->attributes['user_id'], 'delete_symlink');
				}
				BitrixWebdavFolderInviteTable::deleteByFilter(array(
					'=INVITE_USER_ID' => $this->attributes['user_id'],
					'=IS_APPROVED' => true,
					'=IBLOCK_ID' => $this->arParams['dir_array'][self::UF_LINK_IBLOCK_ID],
					'=SECTION_ID' => $this->arParams['dir_array'][self::UF_LINK_SECTION_ID],
				));
			}
		}
		elseif (intval($this->arParams["element_id"]) > 0)
		{
			CWebDavDiskDispatcher::addElementForDeletingMark($this->arParams['element_array'], null, false);

			$el = new CIBlockElement();
			$this->_onEvent('Delete', $this->arParams["element_id"]);
			if($this->_ib_elm_delete($this->arParams["element_id"]))
			{
				CWebDavDiskDispatcher::markDeleteBatch();
				CWebDavDiskDispatcher::sendEventToOwners($this->arParams['element_array'], null, 'force_delete_element');
			}
			else
			{
				CWebDavDiskDispatcher::clearDeleteBatch();
			}
		}
		else
		{
			return "404 Not Found";
		}
		if ($_SESSION["WEBDAV_DATA"]["PUT_EMPTY"] == $options["~path"])
		{
			$_SESSION["WEBDAV_DATA"]["PUT_EMPTY"] = "";
		}
	}
	return "204 No Content";
}