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/*
* SPDX-FileCopyrightText: syuilo and misskey-project
* SPDX-License-Identifier: AGPL-3.0-only
*/
import IPCIDR from 'ip-cidr';
export function getIpHash(ip: string): string {
try {
// because a single person may control many IPv6 addresses,
// only a /64 subnet prefix of any IP will be taken into account.
// (this means for IPv4 the entire address is used)
const prefix = IPCIDR.createAddress(ip).mask(64);
return 'ip-' + BigInt('0b' + prefix).toString(36);
} catch (e) {
const prefix = IPCIDR.createAddress(ip.replace(/:[0-9]+$/, '')).mask(64);
return 'ip-' + BigInt('0b' + prefix).toString(36);
}
}
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