31 lines
984 B
TypeScript
31 lines
984 B
TypeScript
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import type { NextApiRequest } from "next";
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import z from "zod";
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export function parseIpFromHeaders(value: string | string[]) {
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return Array.isArray(value) ? value[0] : value.split(",")[0];
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}
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/**
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* Tries to extract IP address from a request
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* @see https://github.com/vercel/examples/blob/main/edge-functions/ip-blocking/lib/get-ip.ts
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**/
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export default function getIP(request: Request | NextApiRequest) {
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const xff =
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request instanceof Request ? request.headers.get("x-forwarded-for") : request.headers["x-forwarded-for"];
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return xff ? parseIpFromHeaders(xff) : "127.0.0.1";
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}
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const banlistSchema = z.array(z.string());
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export function isIpInBanlist(request: Request | NextApiRequest) {
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const IP = getIP(request);
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const rawBanListJson = process.env.IP_BANLIST || "[]";
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const banList = banlistSchema.parse(JSON.parse(rawBanListJson));
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if (banList.includes(IP)) {
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console.log(`Found banned IP: ${IP} in IP_BANLIST`);
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return true;
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}
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return false;
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}
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