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fix: makes pubkey auth work

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valerie 2024-05-10 18:00:58 -04:00
parent d1da42b7ec
commit 4209e01e96
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GPG key ID: BC4072495F2567DE
1 changed files with 10 additions and 2 deletions
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12
lom/src/index.ts
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@ -1,5 +1,6 @@
import { readFile, writeFile, mkdir } from "node:fs/promises";
import { format } from "node:util";
import { timingSafeEqual } from "node:crypto";
import parseArgsStringToArgv from "string-argv";
import baseAxios from "axios";
@ -15,6 +16,13 @@ export type ClientKeys = {
password: string,
}[];
function checkValue(input: Buffer, allowed: Buffer): boolean {
const autoReject = (input.length !== allowed.length);
if (autoReject) allowed = input;
const isMatch = timingSafeEqual(input, allowed);
return (!autoReject && isMatch);
}
let serverKeyFile: Buffer | string | undefined;
let clientKeys: ClientKeys = [];
@ -101,8 +109,8 @@ server.on("connection", client => {
if (
rawKey.username == auth.username &&
auth.key.algo == key.type &&
auth.key.data == key.getPublicSSH() &&
auth.signature && key.verify(auth.blob as Buffer, auth.signature, auth.key.algo)
checkValue(auth.key.data, key.getPublicSSH()) ||
(auth.signature && key.verify(auth.blob as Buffer, auth.signature, auth.key.algo))
) {
console.log(" -- VERIFIED PUBLIC KEY --");
userData.username = rawKey.username;