65 lines
2 KiB
TypeScript
65 lines
2 KiB
TypeScript
import { exists } from "jsr:@std/fs";
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import * as nostrTools from "@nostr/tools";
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import * as nip06 from "@nostr/tools/nip06";
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import { decodeBase64, encodeBase64 } from "jsr:@std/encoding@0.224/base64";
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import { getEveFilePath } from "./utils/files.ts";
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import {
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decryptUint8Array,
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encryptionKey,
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encryptUint8Array,
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} from "./utils/encryption.ts";
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export function isLocalhost(req: Request): boolean {
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const url = new URL(req.url);
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const hostname = url.hostname;
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return (
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hostname === "127.0.0.1" || hostname === "::1" || hostname === "localhost"
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);
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}
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export function isValidJSON(str: string) {
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try {
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JSON.parse(str);
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} catch {
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return false;
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}
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return true;
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}
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export function isArray<T>(obj: unknown): obj is T[] {
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return Array.isArray(obj);
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}
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export function randomTimeUpTo2DaysInThePast() {
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const now = Date.now();
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const twoDaysAgo = now - 2 * 24 * 60 * 60 * 1000 - 3600 * 1000; // 1 hour buffer in case of clock skew
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return Math.floor(
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(Math.floor(Math.random() * (now - twoDaysAgo)) + twoDaysAgo) / 1000,
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);
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}
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export async function getCCNPubkey(): Promise<string> {
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const ccnPubPath = await getEveFilePath("ccn.pub");
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const doWeHaveKey = await exists(ccnPubPath);
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if (doWeHaveKey) return Deno.readTextFileSync(ccnPubPath);
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const ccnSeed = Deno.env.get("CCN_SEED") || nip06.generateSeedWords();
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const ccnPrivateKey = nip06.privateKeyFromSeedWords(ccnSeed);
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const ccnPublicKey = nostrTools.getPublicKey(ccnPrivateKey);
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const encryptedPrivateKey = encryptUint8Array(ccnPrivateKey, encryptionKey);
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Deno.writeTextFileSync(ccnPubPath, ccnPublicKey);
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Deno.writeTextFileSync(
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await getEveFilePath("ccn.priv"),
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encodeBase64(encryptedPrivateKey),
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);
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Deno.writeTextFileSync(await getEveFilePath("ccn.seed"), ccnSeed);
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return ccnPublicKey;
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}
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export async function getCCNPrivateKey(): Promise<Uint8Array> {
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const encryptedPrivateKey = Deno.readTextFileSync(
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await getEveFilePath("ccn.priv"),
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);
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return decryptUint8Array(decodeBase64(encryptedPrivateKey), encryptionKey);
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}
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