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lib/server/devices: refactor

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This commit is contained in:
Yuri Tatishchev
2025-01-09 16:08:26 -08:00
parent 80acec720c
commit e764f78501
4 changed files with 79 additions and 69 deletions
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14
src/lib/server/devices/utils.ts Normal file
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import { Address4, Address6 } from 'ip-address';
import { env } from '$env/dynamic/private';
export function getIpsFromIndex(ipIndex: number) {
ipIndex -= 1; // 1-indexed in the db
const v4StartingAddr = new Address4(env.IPV4_STARTING_ADDR);
const v6StartingAddr = new Address6(env.IPV6_STARTING_ADDR);
const v4Allowed = Address4.fromBigInt(v4StartingAddr.bigInt() + BigInt(ipIndex));
const v6Offset = BigInt(ipIndex) << (128n - BigInt(env.IPV6_CLIENT_PREFIX_SIZE));
const v6Allowed = Address6.fromBigInt(v6StartingAddr.bigInt() + v6Offset);
const v6AllowedShort = v6Allowed.parsedAddress.join(':');
return [v4Allowed.address + '/32', v6AllowedShort + '/' + env.IPV6_CLIENT_PREFIX_SIZE];
}