Initial fixes (#1)
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Co-authored-by: Mariya Trishina <trishina.mariya@tnsu.kz>
Reviewed-on: http://git.tnsu.kz/gorbenko.pavel/hr-appeals/pulls/1
This commit was merged in pull request #1.
This commit is contained in:
2026-08-21 12:13:37 +00:00
parent 836a472fe0
commit 6efca59d4b
13 changed files with 1482 additions and 0 deletions
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function requireEnv(name: string): string {
const value = process.env[name];
if (!value) {
throw new Error(`Не задана переменная окружения ${name}`);
}
return value;
}
export const config = {
tenantId: requireEnv('GRAPH_TENANT_ID'),
clientId: requireEnv('GRAPH_CLIENT_ID'),
certPath: requireEnv('GRAPH_CERT_PATH'),
keyPath: requireEnv('GRAPH_KEY_PATH'),
scope: process.env.GRAPH_SCOPE ?? 'https://graph.microsoft.com/.default',
port: Number(process.env.PORT ?? 3000)
};
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import { readFileSync } from 'node:fs';
import { createHash, randomUUID } from 'node:crypto';
import jwt from 'jsonwebtoken';
import { config } from './config';
interface CachedToken {
accessToken: string;
expiresAt: number;
}
interface TokenResponse {
access_token: string;
expires_in: number;
}
const TOKEN_ENDPOINT = `https://login.microsoftonline.com/${config.tenantId}/oauth2/v2.0/token`;
// Обновляем токен заранее, а не строго по истечении — иначе запрос, уже летящий
// к Graph с почти протухшим токеном, может получить 401.
const REFRESH_MARGIN_MS = 60_000;
let cached: CachedToken | null = null;
function buildClientAssertion(): string {
const certificatePem = readFileSync(config.certPath, 'utf8');
const privateKey = readFileSync(config.keyPath, 'utf8');
// x5t — SHA-1 отпечаток DER-сертификата, base64url. По нему Azure AD находит
// публичный ключ приложения и проверяет подпись JWT.
const der = certificatePem
.replace(/-----BEGIN CERTIFICATE-----/, '')
.replace(/-----END CERTIFICATE-----/, '')
.replace(/\s+/g, '');
const thumbprint = createHash('sha1').update(Buffer.from(der, 'base64')).digest('base64url');
const nowSeconds = Math.floor(Date.now() / 1000);
return jwt.sign(
{
aud: TOKEN_ENDPOINT,
iss: config.clientId,
sub: config.clientId,
jti: randomUUID(),
nbf: nowSeconds,
exp: nowSeconds + 5 * 60
},
privateKey,
{ algorithm: 'RS256', header: { alg: 'RS256', x5t: thumbprint } }
);
}
export async function getAppOnlyToken(): Promise<string> {
if (cached && cached.expiresAt - REFRESH_MARGIN_MS > Date.now()) {
return cached.accessToken;
}
const body = new URLSearchParams({
grant_type: 'client_credentials',
client_id: config.clientId,
client_assertion_type: 'urn:ietf:params:oauth:client-assertion-type:jwt-bearer',
client_assertion: buildClientAssertion(),
scope: config.scope
});
const response = await fetch(TOKEN_ENDPOINT, {
method: 'POST',
headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
body
});
if (!response.ok) {
throw new Error(`Не удалось получить app-only токен: ${response.status} ${await response.text()}`);
}
const data = (await response.json()) as TokenResponse;
cached = {
accessToken: data.access_token,
expiresAt: Date.now() + data.expires_in * 1000
};
return cached.accessToken;
}
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import express from 'express';
import { config } from './config';
import { getAppOnlyToken } from './graphAuth';
const app = express();
app.get('/healthz', (_req, res) => {
res.status(200).send('ok');
});
// Временный диагностический эндпоинт: подтверждает, что связка
// "сертификат -> подписанный JWT -> access-токен" реально работает,
// до того как появится сама логика сохранения формы в Graph/SharePoint.
app.get('/diag/token', async (_req, res) => {
try {
await getAppOnlyToken();
res.status(200).json({ ok: true });
} catch (error) {
res.status(502).json({ ok: false, error: (error as Error).message });
}
});
app.listen(config.port, () => {
console.log(`hr-appeals-auth listening on :${config.port}`);
});