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fix(server): /api/signin always returns 429 when request header x-forwarded-for contains client port

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Fix #9408
This commit is contained in:
syuilo 2023-01-24 17:51:09 +09:00
parent 117ac53505
commit 8cab16c824
1 changed files with 10 additions and 5 deletions
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15
packages/backend/src/misc/get-ip-hash.ts
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@ -1,9 +1,14 @@
import IPCIDR from 'ip-cidr';
export function getIpHash(ip: string) {
// 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);
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);
}
}