pairing qr

This commit is contained in:
seb
2026-07-20 18:05:44 +02:00
parent 7bd8df22d1
commit 538ecf7a80
4 changed files with 397 additions and 1 deletions

View File

@@ -12,13 +12,28 @@ const certPath = path.join(certsDir, 'cert.pem');
fs.mkdirSync(certsDir, { recursive: true });
// ECDSA P-256 keeps pairing QR codes much smaller than RSA-2048
const subject = '/CN=localhost/O=JTL POS Sync/C=DE';
const san = 'subjectAltName=DNS:localhost,IP:127.0.0.1,IP:0.0.0.0';
execSync(
`openssl req -x509 -newkey rsa:2048 -nodes -keyout "${keyPath}" -out "${certPath}" -days 3650 -subj "${subject}" -addext "${san}"`,
`openssl req -x509 -newkey ec -pkeyopt ec_paramgen_curve:P-256 -nodes -keyout "${keyPath}" -out "${certPath}" -days 3650 -subj "${subject}" -addext "${san}"`,
{ stdio: 'inherit' }
);
const sha1 = execSync(`openssl x509 -in "${certPath}" -noout -fingerprint -sha1`, {
encoding: 'utf8',
})
.trim()
.split('=')[1];
const serial = execSync(`openssl x509 -in "${certPath}" -noout -serial`, {
encoding: 'utf8',
})
.trim()
.split('=')[1];
logger.success(`Wrote ${keyPath}`);
logger.success(`Wrote ${certPath}`);
logger.info(`CERTIFICATE_FINGERPRINT=${sha1.replace(/:/g, '')}`);
logger.info(`CERTIFICATE_SERIAL_NUMBER=${serial}`);
logger.info(`SERVER_FINGERPRINT=${sha1.replace(/:/g, '-')}`);

306
package-lock.json generated
View File

@@ -13,6 +13,7 @@
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"mssql": "^12.7.0",
"qrcode": "^1.5.4",
"sharp": "^0.35.3"
},
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@@ -884,6 +885,30 @@
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@@ -984,6 +1009,15 @@
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@@ -1002,6 +1036,35 @@
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@@ -1028,6 +1091,15 @@
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@@ -1101,6 +1173,12 @@
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@@ -1122,6 +1200,12 @@
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@@ -1265,6 +1371,15 @@
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}
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@@ -1347,6 +1462,18 @@
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@@ -1492,6 +1619,60 @@
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@@ -1538,6 +1719,23 @@
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"qrcode": "bin/qrcode"
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@@ -1569,6 +1767,21 @@
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@@ -1619,6 +1832,12 @@
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View File

@@ -8,6 +8,7 @@
"main": "server.js",
"scripts": {
"cert": "node generate-cert.js",
"qr": "node scripts/create-pairing-qr.mjs",
"backup:s3": "node scripts/s3-backup/backup.mjs",
"backup:s3:quick": "node scripts/s3-backup/backup.mjs --skip-trust",
"db:minimal": "node scripts/create-minimal-db.mjs",
@@ -23,6 +24,7 @@
"chalk": "^5.6.2",
"dotenv": "^17.4.2",
"mssql": "^12.7.0",
"qrcode": "^1.5.4",
"sharp": "^0.35.3"
}
}

View File

@@ -0,0 +1,73 @@
#!/usr/bin/env node
/**
* Generate a pairing QR code for JTL-POS.
*
* Usage:
* node scripts/create-pairing-qr.mjs <host-ip>
* npm run qr -- 192.168.1.50
*
* Reads PORT / PAIRING_CODE from .env and the TLS cert from certs/cert.pem.
*/
import fs from 'node:fs';
import path from 'node:path';
import { fileURLToPath } from 'node:url';
import dotenv from 'dotenv';
import QRCode from 'qrcode';
const root = path.resolve(path.dirname(fileURLToPath(import.meta.url)), '..');
dotenv.config({ path: path.join(root, '.env') });
const host = process.argv[2];
if (!host) {
console.error('Usage: node scripts/create-pairing-qr.mjs <host-ip>');
process.exit(1);
}
const port = String(process.env.PORT || '4443');
const pin = String(process.env.PAIRING_CODE || '307018');
const certPath = path.join(root, 'certs', 'cert.pem');
// Compact: base64 DER only (no PEM headers / line wraps) — client can re-wrap if needed
const cert = fs
.readFileSync(certPath, 'utf8')
.replace(/-----BEGIN CERTIFICATE-----/g, '')
.replace(/-----END CERTIFICATE-----/g, '')
.replace(/\s+/g, '');
const payload = {
v: 1,
host,
port,
pin,
cert,
};
const content = JSON.stringify(payload);
const outDir = path.join(root, 'certs');
const pngPath = path.join(outDir, 'pairing-qr.png');
const jsonPath = path.join(outDir, 'pairing-qr.json');
const qrOpts = {
errorCorrectionLevel: 'L', // ~7% recovery — smallest size for the payload
margin: 1,
};
const qr = QRCode.create(content, qrOpts);
// Scale by module count so fewer modules actually looks smaller (not stretched to 512)
const modulePx = 4;
const width = qr.modules.size * modulePx;
await QRCode.toFile(pngPath, content, {
...qrOpts,
type: 'png',
width,
});
fs.writeFileSync(jsonPath, `${JSON.stringify(payload, null, 2)}\n`);
console.log(await QRCode.toString(content, { type: 'terminal', small: true, ...qrOpts }));
console.log(content);
console.log(`host=${host} port=${port} pin=${pin}`);
console.log(`QR version=${qr.version} modules=${qr.modules.size} png=${width}px`);
console.log(`Wrote ${pngPath}`);
console.log(`Wrote ${jsonPath}`);