Files
xmrpay.link/app.js
Alexander Schmidt 32245fccdf feat: replace view-key monitor with TX proof verification
Remove v2 view-key payment monitor (privacy concern — nobody should
enter their private view key on a website). Replace with TX proof
verification where the sender provides TX Hash + TX Key from their
wallet. The proof is cryptographically verified client-side and
stored with the invoice for persistent "Paid" status.

- Remove monitor.js and all view-key monitoring UI/logic
- Add TX proof section: sender enters TX Hash + TX Key
- Client-side verification via check_tx_key equivalent (noble-curves)
- api/verify.php stores/retrieves payment proofs per invoice
- Short URL redirect now includes invoice code for status lookup
- Invoice link shows "Paid" badge once proof is verified
- Deadline badges (7/14/30 days) for payment terms
2026-03-25 09:37:09 +01:00

577 lines
18 KiB
JavaScript

(function () {
'use strict';
// --- Config ---
const COINGECKO_API = 'https://api.coingecko.com/api/v3/simple/price?ids=monero&vs_currencies=eur,usd,chf';
// Standard address (4..., 95 chars), Subaddress (8..., 95 chars), Integrated address (4..., 106 chars)
const XMR_STANDARD_REGEX = /^[48][1-9A-HJ-NP-Za-km-z]{94}$/;
const XMR_INTEGRATED_REGEX = /^4[1-9A-HJ-NP-Za-km-z]{105}$/;
const CACHE_DURATION = 60000; // 1 min
const RATE_RETRY_DELAY = 10000; // 10s retry on failure
// --- State ---
let fiatRates = null;
let ratesTimestamp = 0;
let countdownInterval = null;
let ratesFailed = false;
// --- DOM ---
const $ = (s) => document.querySelector(s);
const addrInput = $('#addr');
const amountInput = $('#amount');
const currencySelect = $('#currency');
const descInput = $('#desc');
const timerCustom = $('#timerCustom');
const deadlineBadges = $('#deadlineBadges');
let selectedDays = 0;
const generateBtn = $('#generate');
const resultSection = $('#result');
const qrContainer = $('#qr');
const uriBox = $('#uri');
const openWalletBtn = $('#openWallet');
const copyAddrBtn = $('#copyAddr');
const countdownEl = $('#countdown');
const fiatHint = $('#fiatHint');
const toast = $('#toast');
const shareLinkInput = $('#shareLink');
const copyShareLinkBtn = $('#copyShareLink');
const newRequestBtn = $('#newRequest');
const homeLink = $('#homeLink');
// TX Proof DOM
const proofToggle = $('#proofToggle');
const proofPanel = $('#proofPanel');
const txHashInput = $('#txHash');
const txKeyInput = $('#txKey');
const verifyProofBtn = $('#verifyProof');
const proofResult = $('#proofResult');
const paymentStatus = $('#paymentStatus');
let cryptoLoaded = false;
// --- Init ---
fetchRates();
loadFromHash() || loadSaved();
registerSW();
// --- Events ---
addrInput.addEventListener('input', validateAddress);
amountInput.addEventListener('input', updateFiatHint);
currencySelect.addEventListener('change', updateFiatHint);
generateBtn.addEventListener('click', generate);
copyAddrBtn.addEventListener('click', () => copyToClipboard(addrInput.value.trim()));
copyShareLinkBtn.addEventListener('click', () => copyToClipboard(shareLinkInput.value));
qrContainer.addEventListener('click', downloadQR);
newRequestBtn.addEventListener('click', resetForm);
homeLink.addEventListener('click', function (e) { e.preventDefault(); resetForm(); });
// Deadline badge events
deadlineBadges.querySelectorAll('.badge').forEach(function (btn) {
btn.addEventListener('click', function () {
const days = parseInt(btn.getAttribute('data-days'));
if (btn.classList.contains('active')) {
btn.classList.remove('active');
selectedDays = 0;
timerCustom.value = '';
} else {
deadlineBadges.querySelectorAll('.badge').forEach(function (b) { b.classList.remove('active'); });
btn.classList.add('active');
selectedDays = days;
timerCustom.value = '';
}
});
});
timerCustom.addEventListener('input', function () {
deadlineBadges.querySelectorAll('.badge').forEach(function (b) { b.classList.remove('active'); });
selectedDays = parseInt(timerCustom.value) || 0;
});
// TX Proof events
proofToggle.addEventListener('click', toggleProofPanel);
txHashInput.addEventListener('input', validateProofInputs);
txKeyInput.addEventListener('input', validateProofInputs);
verifyProofBtn.addEventListener('click', verifyTxProof);
// --- Functions ---
function resetForm() {
addrInput.value = '';
amountInput.value = '';
currencySelect.value = 'EUR';
descInput.value = '';
selectedDays = 0;
timerCustom.value = '';
deadlineBadges.querySelectorAll('.badge').forEach(function (b) { b.classList.remove('active'); });
fiatHint.textContent = '';
fiatHint.classList.remove('error');
addrInput.classList.remove('valid', 'invalid');
generateBtn.disabled = true;
resultSection.classList.remove('visible');
if (countdownInterval) clearInterval(countdownInterval);
qrContainer.innerHTML = '';
uriBox.textContent = '';
shareLinkInput.value = '';
// Reset proof
proofPanel.classList.remove('open');
txHashInput.value = '';
txKeyInput.value = '';
verifyProofBtn.disabled = true;
proofResult.innerHTML = '';
proofResult.className = 'proof-result';
paymentStatus.innerHTML = '';
paymentStatus.className = 'payment-status';
history.replaceState(null, '', location.pathname);
window.scrollTo({ top: 0, behavior: 'smooth' });
addrInput.focus();
}
function isValidAddress(addr) {
return XMR_STANDARD_REGEX.test(addr) || XMR_INTEGRATED_REGEX.test(addr);
}
function validateAddress() {
const val = addrInput.value.trim();
addrInput.classList.remove('valid', 'invalid');
if (val.length === 0) return;
if (isValidAddress(val)) {
addrInput.classList.add('valid');
} else if (val.length >= 10) {
addrInput.classList.add('invalid');
}
updateGenerateBtn();
}
function updateGenerateBtn() {
const addr = addrInput.value.trim();
generateBtn.disabled = !isValidAddress(addr);
}
function updateFiatHint() {
const amount = parseFloat(amountInput.value);
const currency = currencySelect.value;
if (!amount || amount <= 0) {
fiatHint.textContent = '';
fiatHint.classList.remove('error');
return;
}
if (currency !== 'XMR' && !fiatRates) {
fiatHint.textContent = ratesFailed ? I18n.t('rates_offline') : '';
fiatHint.classList.toggle('error', ratesFailed);
return;
}
fiatHint.classList.remove('error');
if (currency === 'XMR') {
if (fiatRates) {
const eur = (amount * fiatRates.eur).toFixed(2);
fiatHint.textContent = '\u2248 ' + eur + ' EUR';
} else {
fiatHint.textContent = '';
}
} else {
const rate = fiatRates[currency.toLowerCase()];
if (rate && rate > 0) {
const xmr = (amount / rate).toFixed(8);
fiatHint.textContent = '\u2248 ' + xmr + ' XMR';
}
}
}
function getXmrAmount() {
const amount = parseFloat(amountInput.value);
const currency = currencySelect.value;
if (!amount || amount <= 0) return null;
if (currency === 'XMR') return amount;
if (fiatRates) {
const rate = fiatRates[currency.toLowerCase()];
if (rate && rate > 0) return amount / rate;
}
return null;
}
function buildUri(addr, xmrAmount, desc) {
let uri = 'monero:' + addr;
const params = [];
if (xmrAmount) params.push('tx_amount=' + xmrAmount.toFixed(12));
if (desc) params.push('tx_description=' + encodeURIComponent(desc));
if (params.length) uri += '?' + params.join('&');
return uri;
}
function buildHash(addr, xmrAmount, desc, timer) {
const params = new URLSearchParams();
params.set('a', addr);
if (xmrAmount) params.set('x', xmrAmount.toFixed(12));
if (desc) params.set('d', desc);
if (timer) params.set('t', timer);
return params.toString();
}
async function shortenUrl(hash) {
try {
const res = await fetch('/api/shorten.php', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({ hash: hash })
});
if (!res.ok) throw new Error('HTTP ' + res.status);
const data = await res.json();
return location.origin + '/s/' + data.code;
} catch (e) {
console.warn('Short URL failed:', e);
return null;
}
}
function generate() {
const addr = addrInput.value.trim();
if (!isValidAddress(addr)) return;
const xmrAmount = getXmrAmount();
const desc = descInput.value.trim();
const timer = selectedDays;
const uri = buildUri(addr, xmrAmount, desc);
// Show result
resultSection.classList.add('visible');
uriBox.textContent = uri;
openWalletBtn.href = uri;
// Share link — show long URL immediately, then replace with short
const hash = buildHash(addr, xmrAmount, desc, timer);
shareLinkInput.value = location.origin + '/#' + hash;
shortenUrl(hash).then(function (shortUrl) {
if (shortUrl) shareLinkInput.value = shortUrl;
});
// QR
qrContainer.innerHTML = '';
new QRCode(qrContainer, {
text: uri,
width: 256,
height: 256,
colorDark: '#000000',
colorLight: '#ffffff',
correctLevel: QRCode.CorrectLevel.M
});
const hint = document.createElement('div');
hint.className = 'qr-hint';
hint.textContent = I18n.t('qr_hint');
qrContainer.appendChild(hint);
// Countdown
startCountdown();
// Save to LocalStorage
saveState(addr);
// Scroll to result
resultSection.scrollIntoView({ behavior: 'smooth', block: 'start' });
}
function loadFromHash() {
const hash = location.hash.substring(1);
if (!hash) return false;
const params = new URLSearchParams(hash);
const addr = params.get('a');
if (!addr || !isValidAddress(addr)) return false;
addrInput.value = addr;
validateAddress();
const xmr = params.get('x');
if (xmr) {
amountInput.value = parseFloat(xmr);
currencySelect.value = 'XMR';
}
const desc = params.get('d');
if (desc) descInput.value = desc;
const timer = params.get('t');
if (timer && parseInt(timer) > 0) {
selectedDays = parseInt(timer);
// Activate matching badge or set custom
const badge = deadlineBadges.querySelector('.badge[data-days="' + selectedDays + '"]');
if (badge) {
badge.classList.add('active');
} else {
timerCustom.value = selectedDays;
}
}
// Check for short URL code and load payment status
const code = params.get('c');
if (code) {
setTimeout(function () { loadPaymentStatus(code); }, 200);
}
// Auto-generate
setTimeout(generate, 100);
return true;
}
function startCountdown() {
if (countdownInterval) clearInterval(countdownInterval);
countdownEl.textContent = '';
countdownEl.className = 'countdown';
if (!selectedDays || selectedDays <= 0) return;
const end = Date.now() + selectedDays * 86400000;
countdownEl.classList.add('active');
function tick() {
const remaining = end - Date.now();
if (remaining <= 0) {
clearInterval(countdownInterval);
countdownEl.textContent = I18n.t('countdown_expired');
countdownEl.className = 'countdown expired';
return;
}
const d = Math.floor(remaining / 86400000);
const h = Math.floor((remaining % 86400000) / 3600000);
const m = Math.floor((remaining % 3600000) / 60000);
const s = Math.floor((remaining % 60000) / 1000);
if (d > 0) {
countdownEl.textContent = I18n.t('countdown_remaining_days')
.replace('{d}', d).replace('{h}', pad(h)).replace('{m}', pad(m)).replace('{s}', pad(s));
} else {
countdownEl.textContent = I18n.t('countdown_remaining_hours')
.replace('{h}', pad(h)).replace('{m}', pad(m)).replace('{s}', pad(s));
}
}
tick();
countdownInterval = setInterval(tick, 1000);
}
function pad(n) {
return n < 10 ? '0' + n : '' + n;
}
function downloadQR() {
const canvas = qrContainer.querySelector('canvas');
if (!canvas) return;
const link = document.createElement('a');
link.download = 'xmrpay-qr.png';
link.href = canvas.toDataURL('image/png');
link.click();
}
function copyToClipboard(text) {
navigator.clipboard.writeText(text).then(() => {
showToast(I18n.t('toast_copied'));
});
}
function showToast(msg) {
toast.textContent = msg;
toast.classList.add('show');
setTimeout(() => toast.classList.remove('show'), 2000);
}
function saveState(addr) {
try {
localStorage.setItem('xmrpay_addr', addr);
} catch (e) { /* silent */ }
}
function loadSaved() {
try {
const addr = localStorage.getItem('xmrpay_addr');
if (addr) {
addrInput.value = addr;
validateAddress();
}
} catch (e) { /* silent */ }
}
async function fetchRates() {
if (fiatRates && Date.now() - ratesTimestamp < CACHE_DURATION) return;
try {
const res = await fetch(COINGECKO_API);
if (!res.ok) throw new Error('HTTP ' + res.status);
const data = await res.json();
fiatRates = data.monero;
ratesTimestamp = Date.now();
ratesFailed = false;
updateFiatHint();
} catch (e) {
console.warn('Kurse konnten nicht geladen werden:', e);
ratesFailed = true;
updateFiatHint();
setTimeout(fetchRates, RATE_RETRY_DELAY);
}
}
function registerSW() {
if ('serviceWorker' in navigator) {
navigator.serviceWorker.register('sw.js').catch(function () {});
}
}
// --- TX Proof Functions ---
function toggleProofPanel() {
const isOpen = proofPanel.classList.contains('open');
if (isOpen) {
proofPanel.classList.remove('open');
return;
}
// Lazy-load crypto bundle
if (!cryptoLoaded && !window.XmrCrypto) {
loadCryptoBundle().then(function () {
cryptoLoaded = true;
proofPanel.classList.add('open');
txHashInput.focus();
});
return;
}
proofPanel.classList.add('open');
txHashInput.focus();
}
function loadCryptoBundle() {
return new Promise(function (resolve, reject) {
if (window.XmrCrypto) { resolve(); return; }
const script = document.createElement('script');
script.src = 'lib/xmr-crypto.bundle.js';
script.onload = resolve;
script.onerror = function () { reject(new Error('Failed to load crypto module')); };
document.head.appendChild(script);
});
}
function isValidHex64(val) {
return /^[0-9a-fA-F]{64}$/.test(val);
}
function validateProofInputs() {
const hash = txHashInput.value.trim();
const key = txKeyInput.value.trim();
verifyProofBtn.disabled = !(isValidHex64(hash) && isValidHex64(key));
}
async function verifyTxProof() {
const txHash = txHashInput.value.trim();
const txKey = txKeyInput.value.trim();
const addr = addrInput.value.trim();
if (!isValidHex64(txHash) || !isValidHex64(txKey) || !isValidAddress(addr)) return;
verifyProofBtn.disabled = true;
proofResult.className = 'proof-result active';
proofResult.textContent = I18n.t('proof_verifying');
try {
// Fetch TX from node
var res = await fetch('/api/node.php', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({ method: 'gettransactions', params: { txs_hashes: [txHash], decode_as_json: true } })
});
var data = await res.json();
var txs = data.txs || [];
if (txs.length === 0) {
proofResult.className = 'proof-result active error';
proofResult.textContent = I18n.t('proof_tx_not_found');
verifyProofBtn.disabled = false;
return;
}
var tx = txs[0];
var txJson = JSON.parse(tx.as_json);
// Get keys from address
var keys = XmrCrypto.getKeysFromAddress(addr);
var pubViewKey = keys.publicViewKey;
var pubSpendKey = keys.publicSpendKey;
// Key derivation: D = 8 * txKey * pubViewKey
var r = XmrCrypto.bytesToScalar(XmrCrypto.hexToBytes(txKey));
var A = XmrCrypto.Point.fromHex(pubViewKey);
var D = A.multiply(r).multiply(8n);
var derivation = D.toBytes();
var B = XmrCrypto.Point.fromHex(pubSpendKey);
// Check each output
var outputs = txJson.vout || [];
var ecdhInfo = (txJson.rct_signatures && txJson.rct_signatures.ecdhInfo) || [];
var totalAmount = 0n;
var found = false;
for (var oi = 0; oi < outputs.length; oi++) {
var out = outputs[oi];
var outputKey = out.target && out.target.tagged_key ? out.target.tagged_key.key : (out.target && out.target.key);
if (!outputKey) continue;
var varint = XmrCrypto.encodeVarint(oi);
var scalar = XmrCrypto.hashToScalar(XmrCrypto.concat(derivation, varint));
var scBig = XmrCrypto.bytesToScalar(scalar);
var expectedP = XmrCrypto.Point.BASE.multiply(scBig).add(B);
var expectedHex = XmrCrypto.bytesToHex(expectedP.toBytes());
if (expectedHex === outputKey) {
found = true;
// Decode amount
if (ecdhInfo[oi] && ecdhInfo[oi].amount) {
var amount = XmrCrypto.decodeRctAmount(ecdhInfo[oi].amount, derivation, oi);
totalAmount += amount;
}
}
}
if (found) {
var xmrAmount = Number(totalAmount) / 1e12;
proofResult.className = 'proof-result active success';
proofResult.textContent = I18n.t('proof_verified').replace('{amount}', xmrAmount.toFixed(6));
// Store proof with invoice
var shareUrl = shareLinkInput.value;
var codeMatch = shareUrl.match(/\/s\/([a-z0-9]+)/);
if (codeMatch) {
await fetch('/api/verify.php', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({
code: codeMatch[1],
tx_hash: txHash,
amount: xmrAmount,
confirmations: tx.confirmations || 0
})
});
}
} else {
proofResult.className = 'proof-result active error';
proofResult.textContent = I18n.t('proof_no_match');
}
} catch (e) {
proofResult.className = 'proof-result active error';
proofResult.textContent = I18n.t('proof_error');
}
verifyProofBtn.disabled = false;
}
// Load payment status if viewing via short URL
function loadPaymentStatus(code) {
fetch('/api/verify.php?code=' + encodeURIComponent(code))
.then(function (res) { return res.json(); })
.then(function (data) {
if (data.verified) {
paymentStatus.className = 'payment-status paid';
paymentStatus.innerHTML = '<div class="paid-badge">' + I18n.t('status_paid') +
'</div><div class="paid-detail">' + data.amount.toFixed(6) + ' XMR — TX ' +
data.tx_hash.substring(0, 8) + '...</div>';
}
})
.catch(function () {});
}
})();