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/*
GoToSocial
Copyright (C) GoToSocial Authors admin@gotosocial.org
SPDX-License-Identifier: AGPL-3.0-or-later
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
const isValidDomain = require("is-valid-domain");
const psl = require("psl");
function isValidDomainBlock(domain) {
return isValidDomain(domain, {
/*
Wildcard prefix *. can be stripped since it's equivalent to not having it,
but wildcard anywhere else in the domain is not handled by the backend so it's invalid.
*/
wildcard: false,
allowUnicode: true
});
}
/*
Still can't think of a better function name for this,
but we're checking a domain against the Public Suffix List <https://publicsuffix.org/>
to see if we should suggest removing subdomain(s) since they're likely owned/ran by the same party
social.example.com -> suggests example.com
*/
function hasBetterScope(domain) {
const lookup = psl.get(domain);
if (lookup && lookup != domain) {
return lookup;
} else {
return false;
}
}
module.exports = { isValidDomainBlock, hasBetterScope };
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