15 lines
516 B
TypeScript
15 lines
516 B
TypeScript
import IPCIDR from "ip-cidr";
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export function getIpHash(ip: string) {
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try {
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// because a single person may control many IPv6 addresses,
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// only a /64 subnet prefix of any IP will be taken into account.
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// (this means for IPv4 the entire address is used)
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const prefix = IPCIDR.createAddress(ip).mask(64);
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return `ip-${BigInt(`0b${prefix}`).toString(36)}`;
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} catch (e) {
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const prefix = IPCIDR.createAddress(ip.replace(/:[0-9]+$/, "")).mask(64);
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return `ip-${BigInt(`0b${prefix}`).toString(36)}`;
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}
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}
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