CIBlockDocument::SetPermissions

static function SetPermissions($documentId, $workflowId, $arPermissions, $bRewrite = true)
{
	$documentId = intval($documentId);
	if ($documentId <= 0)
		throw new CBPArgumentNullException("documentId");

	$documentType = self::GetDocumentType($documentId);
	$iblockId = intval(mb_substr($documentType, mb_strlen("iblock_")));
	if ($iblockId <= 0)
		throw new CBPArgumentOutOfRangeException("documentType", $documentType);

	if (CIBlock::GetArrayByID($iblockId, "RIGHTS_MODE") !== "E")
		return;

	$ob = new CIBlockElementRights($iblockId, $documentId);
	$documentRights = $ob->GetRights();

	$mode = 'Hold';
	$scope = 'ScopeWorkflow';

	if (is_array($bRewrite) && class_exists('CBPSetPermissionsMode'))
	{
		if (isset($bRewrite['setMode']))
			$mode = CBPSetPermissionsMode::outMode($bRewrite['setMode']);
		if (isset($bRewrite['setScope']))
			$scope = CBPSetPermissionsMode::outScope($bRewrite['setScope']);
	}
	elseif ($bRewrite == true)
	{
		$mode = 'Clear';
	}

	$overrideCodes = array();
	if ($mode == 'Clear' || $mode == 'Rewrite')
	{
		foreach ($documentRights as $i => $arRight)
		{
			if ($scope == 'ScopeDocument' || $scope == 'ScopeWorkflow' && $arRight["XML_ID"] == $workflowId)
			{
				if ($mode == 'Clear')
					unset($documentRights[$i]);

				if ($mode == 'Rewrite')
					$overrideCodes[$arRight["GROUP_CODE"]] = $i;
			}

		}
	}

	$i = 0;
	$l = mb_strlen("user_");
	foreach ($arPermissions as $taskId => $arUsers)
	{
		foreach ($arUsers as $user)
		{
			if (!$user)
				continue;
			$gc = null;
			if ($user == 'author')
			{
				$u = self::GetUsersFromUserGroup('author', $documentId);
				foreach ($u as $u1)
					$gc = "U".$u1;
			}
			elseif (mb_strpos($user, 'group_') === 0)
			{
				$gc = mb_strtoupper(mb_substr($user, mb_strlen('group_')));
			}
			else
			{
				$gc = ((mb_substr($user, 0, $l) == "user_") ? "U".mb_substr($user, $l) : "G".$user);
			}
			if ($gc != null)
			{
				$documentRights["n".$i] = array("GROUP_CODE" => $gc, "TASK_ID" => $taskId, "XML_ID" => $workflowId);
				$i++;

				if (isset($overrideCodes[$gc]))
					unset($documentRights[$overrideCodes[$gc]]);
			}
		}
	}

	$ob->SetRights($documentRights);
}