commit c092a8709587eca93e1b0cfd462081c54d7c7133
parent 2553a6844ac542b2ad9d16d93db8f8db4a4a6543
Author: Sebastian <sebasjm@taler-systems.com>
Date: Sun, 3 May 2026 19:12:35 -0300
styled paywall
Diffstat:
1 file changed, 410 insertions(+), 28 deletions(-)
diff --git a/contrib/paywall.en.must b/contrib/paywall.en.must
@@ -2,7 +2,23 @@
<html lang="en">
<head>
<title>Payment Required</title>
- <meta http-equiv="content-type" content="text/html;CHARSET=utf-8">
+ <meta http-equiv="content-type" content="text/html;CHARSET=utf-8" />
+ <meta charset="UTF-8" />
+ <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+ <meta name="taler-support" content="uri" />
+ <script>
+ const QR_WIDTH = 300;
+ const QR_HEIGHT = 300;
+ const I18N_PAYMENT_CONFIRMED_LOADING = 'Payment confirmed! Loading page...';
+ const I18N_PAYMENT_CONFIRMED_PROBLEM = 'Payment confirmed, but something went wrong when we tried to obtain the access token. This is a bug, please contact the operator if the issue persists.';
+ const I18N_PAYMENT_CONFIRMED_ERROR = 'Could not reach the server!';
+ const I18N_PAYMENT_CONFIRMED_NO_ORDER = 'Unexpected 200 OK response without an order_id. Trying again.';
+ const I18N_PAYMENT_NETWORK_PROBLEM = 'Network error! Retrying...';
+ const MERCHANT_BACKEND = '{{ merchant_backend }}';
+ const MERCHANT_TEMPLATE_ID = '{{ template_id }}';
+ const MAX_PICKUP_DELAY = {{ max_pickup_delay }}; // in seconds
+ const POLL_WAIT_MS = 30000;
+ </script>
<script>
const encTable = "0123456789ABCDEFGHJKMNPQRSTVWXYZ";
function encodeCrock(data) {
@@ -46,11 +62,13 @@
return new Uint8Array(b);
}
function waitMs(ms) {
- return new Promise(resolve => setTimeout(resolve, ms));
+ return new Promise((resolve) => setTimeout(resolve, ms));
}
async function sha256b64(data) {
- const buf = await crypto.subtle.digest('SHA-256', data);
- return new Uint8Array(buf).toBase64({alphabet: "base64url"}).replace(/=+$/, '');
+ const buf = await crypto.subtle.digest("SHA-256", data);
+ return new Uint8Array(buf)
+ .toBase64({ alphabet: "base64url" })
+ .replace(/=+$/, "");
}
async function makePaivanaId(curTime, nonceBuf, website) {
const websiteBuf = new TextEncoder().encode(`${website}\0`);
@@ -73,22 +91,19 @@
// "?page=42" is being used instead of "/pages/42".
const website = href.split('#')[0];
const origin = window.location.origin;
- const metaMerchant = '{{ merchant_backend }}';
- const metaTemplate = '{{ template_id }}';
- const maxPickupDelay = {{ max_pickup_delay }}; // in seconds
// cap at 100 years, we don't deal well with 'forever' otherwise
- const usePickupDelay = Math.min(maxPickupDelay, 60*60*24*356*100);
+ const usePickupDelay = Math.min(MAX_PICKUP_DELAY, 60*60*24*356*100);
// Strip trailing slash so we can append /templateId cleanly.
- const merchantBase = metaMerchant.replace(/\/$/, '');
+ const merchantBase = MERCHANT_BACKEND.replace(/\/$/, '');
const merchantUrl = new URL(merchantBase);
const merchantProto = merchantUrl.protocol;
const suffix = merchantProto === 'http:' ? '+http' : '';
const merchantHost = merchantUrl.host;
const merchantPath = merchantUrl.path;
- const expTime = Math.floor(Date.now() / 1000) + maxPickupDelay;
+ const expTime = Math.floor(Date.now() / 1000) + MAX_PICKUP_DELAY;
const nonceBuf = new Uint8Array(16);
crypto.getRandomValues(nonceBuf);
const nonce = encodeCrock(nonceBuf.buffer);
@@ -100,24 +115,26 @@
merchantHost,
merchantPath,
`/`,
- metaTemplate,
+ MERCHANT_TEMPLATE_ID,
`?session_id=${encodeURIComponent(paivanaId)}`,
`&fulfillment_url=${encodeURIComponent(href)}`
].join('');
const talerLink = document.getElementById('talerlink');
talerLink.href = talerUri;
- talerLink.textContent = talerUri;
+
+ const merchantHostLabel = document.getElementById('merchant-host');
+ merchantHostLabel.textContent = merchantHost
new QRCode(document.getElementById('qrcode'), {
text: talerUri,
- width: 200,
- height: 200,
+ width: QR_WIDTH,
+ height: QR_HEIGHT,
correctLevel: QRCode.CorrectLevel.M
});
async function confirmPayment(orderId) {
- talerLink.textContent = 'Payment confirmed! Loading page...';
+ talerLink.textContent = I18N_PAYMENT_CONFIRMED_LOADING;
talerLink.href = '#';
try {
const res = await fetch(`${origin}/.well-known/paivana`, {
@@ -126,7 +143,7 @@
body: JSON.stringify({ order_id: orderId, nonce, cur_time: { t_s: expTime }, website }),
});
if (res.status >= 400) {
- talerLink.textContent = 'Payment confirmed, but something went wrong when we tried to obtain the access token. This is a bug, please contact the operator if the issue persists.';
+ talerLink.textContent = I18N_PAYMENT_CONFIRMED_PROBLEM;
const preError = document.createElement("pre")
preError.style = "text-wrap-mode = wrap";
preError.innerText = JSON.stringify(await res.json())
@@ -137,7 +154,7 @@
location.href = dest;
} catch (e) {
console.warn('[paivana] Error trying to confirm payment:', e);
- talerLink.textContent = 'Could not reach the server!';
+ talerLink.textContent = I18N_PAYMENT_CONFIRMED_ERROR;
}
}
@@ -147,7 +164,8 @@
encodeURIComponent(paivanaId),
"?fulfillment_url=",
encodeURIComponent(website),
- "&timeout_ms=30000"
+ "&timeout_ms=",
+ POLL_WAIT_MS
].join("");
while (true) {
@@ -161,7 +179,7 @@
if (info.order_id) {
await confirmPayment(info.order_id);
} else {
- talerLink.textContent = 'Unexpected 200 OK response without an order_id. Trying again.';
+ talerLink.textContent = I18N_PAYMENT_CONFIRMED_NO_ORDER;
await waitMs(400);
location.href = website;
}
@@ -170,27 +188,391 @@
} catch (e) {
console.warn('[paivana] poll error:', e);
talerLink.href = '#';
- talerLink.textContent = 'Network error! Retrying...';
+ talerLink.textContent = I18N_PAYMENT_NETWORK_PROBLEM;
}
- const remMs = Math.round(30_000 - (performance.now() - start));
+ const remMs = Math.round(POLL_WAIT_MS - (performance.now() - start));
if (remMs > 0) await waitMs(remMs);
}
-
+ return;
};
</script>
+ <style>
+ *,
+ *::before,
+ *::after {
+ box-sizing: border-box;
+ margin: 0;
+ padding: 0;
+ }
+
+ :root {
+ --bg: rgb(226, 232, 240);
+ --surface: white;
+ --border: rgba(255, 255, 255, 0.07);
+ --border-md: rgba(255, 255, 255, 0.13);
+ --text: black;
+ --muted: #7a7d8a;
+ --primary: #0042b3;
+ --primary-container: #d3deff;
+ --on-primary-container: #00134a;
+ --on-primary: #ffffff;
+ --primary-dim: #7a7d8a;
+ --radius-lg: 18px;
+ --radius-md: 10px;
+ --radius-sm: 7px;
+ }
+
+ body {
+ font-family: sans-serif;
+ background: var(--bg);
+ color: var(--text);
+ min-height: 100vh;
+ display: flex;
+ align-items: center;
+ flex-direction: column;
+ }
+
+ .card {
+ position: relative;
+ z-index: 1;
+ background: var(--surface);
+ border: 1px solid var(--border-md);
+ border-radius: var(--radius-lg);
+ padding: 1rem;
+ display: flex;
+ flex-direction: column;
+ align-items: center;
+ gap: 1rem;
+ box-shadow:
+ 0 0 0 1px rgba(0, 0, 0, 0.4),
+ 0 32px 80px rgba(0, 0, 0, 0.5);
+ }
+ .card-container {
+ padding: 10px;
+ width: 100%;
+ max-width: 400px;
+ margin: auto;
+ }
+
+ /* compact header row */
+ .header {
+ display: flex;
+ align-items: center;
+ gap: 10px;
+ width: 100%;
+ }
+ .lock-icon {
+ width: 28px;
+ height: 28px;
+ flex-shrink: 0;
+ opacity: 0.9;
+ }
+ .header-text h1 {
+ font-size: 15px;
+ font-weight: 500;
+ color: var(--text);
+ line-height: 1.2;
+ }
+ .header-text p {
+ font-size: 12px;
+ color: var(--muted);
+ margin-top: 2px;
+ }
+
+ /* QR section */
+ .qr-wrap {
+ display: flex;
+ flex-direction: column;
+ align-items: center;
+ gap: 10px;
+ }
+ .qr-frame {
+ display: flex;
+ align-items: center;
+ justify-content: center;
+ }
+ .qr-frame svg {
+ display: block;
+ }
+ .qr-taler-logo {
+ position: absolute;
+ top: 50%;
+ left: 50%;
+ transform: translate(-50%, -50%);
+ align-content: center;
+ display: flex;
+ background-color: transparent;
+ }
+ .qr-taler-frame {
+ max-width: 400px;
+ margin: auto;
+ padding: 10px;
+ border-radius: 20px;
+ background: conic-gradient(
+ from var(--angle),
+ #0042b3 0deg,
+ #f1f1f4 20deg,
+ #f1f1f4 150deg,
+ #f1f1f4 160deg,
+ #0042b3 180deg,
+ #f1f1f4 200deg,
+ #f1f1f4 330deg,
+ #f1f1f4 340deg,
+ #0042b3
+ )
+ padding-box;
+ animation: 10s linear 0s infinite normal none running rotate;
+ position: relative;
+ }
+ .qr-label {
+ font-size: 11px;
+ color: var(--muted);
+ letter-spacing: 0.06em;
+ }
+ .qr-legend {
+ text-align: center;
+ }
+
+ /* amount badge */
+ .amount-badge {
+ background: rgba(200, 241, 53, 0.08);
+ border: 1px solid rgba(200, 241, 53, 0.2);
+ border-radius: 99px;
+ padding: 5px 14px;
+ font-size: 13px;
+ font-weight: 500;
+ color: var(--primary);
+ letter-spacing: 0.04em;
+ }
+
+ /* steps */
+ .steps {
+ width: 100%;
+ display: flex;
+ flex-direction: column;
+ gap: 8px;
+ }
+ .step {
+ display: flex;
+ align-items: flex-start;
+ gap: 11px;
+ color: var(--on-primary-container);
+ background: var(--primary-container);
+ border: 1px solid var(--border);
+ border-radius: var(--radius-md);
+ padding: 11px 13px;
+ transition: border-color 0.2s;
+ }
+ a.step {
+ border: 1px solid var(--primary);
+ }
+ .step:hover {
+ border-color: var(--border-md);
+ }
+ .step-num {
+ width: 20px;
+ height: 20px;
+ border-radius: 50%;
+ background: var(--primary-container);
+ border: 1px solid var(--primary);
+ color: var(--primary);
+ font-size: 11px;
+ font-weight: 500;
+ display: flex;
+ align-items: center;
+ justify-content: center;
+ flex-shrink: 0;
+ margin-top: 1px;
+ }
+ .step-body {
+ }
+ .step-title {
+ font-size: 18px;
+ font-weight: 500;
+ color: var(--text);
+ margin-bottom: 2px;
+ }
+ .step-desc {
+ font-size: 12px;
+ color: var(--muted);
+ line-height: 1.55;
+ }
+
+ /* cta button */
+ .cta {
+ padding-top: 13px;
+ padding-bottom: 13px;
+ padding-left: 26px;
+ padding-right: 26px;
+ border-radius: var(--radius-md);
+ background: var(--primary);
+ color: var(--on-primary);
+ border: none;
+ font-size: 20px;
+ font-weight: 500;
+ cursor: pointer;
+ letter-spacing: 0.01em;
+ }
+ .cta:hover {
+ background: var(--primary-dim);
+ }
+ .cta:active {
+ transform: scale(0.98);
+ }
+
+ /* footer note */
+ .footer-note {
+ font-size: 11px;
+ color: var(--muted);
+ text-align: center;
+ line-height: 1.6;
+ }
+ .footer-note a {
+ color: var(--muted);
+ text-decoration: underline;
+ text-underline-offset: 2px;
+ }
+ .header {
+ width: 100%;
+ padding: 8px;
+ margin-bottom: 10px;
+ display: flex;
+ background-color: white;
+ border: 1px black solid;
+ }
+ .footer {
+ position: fixed;
+ bottom: 0;
+ width: 100%;
+ padding: 8px;
+ display: flex;
+ justify-content: center;
+ background-color: white;
+ border: 1px black solid;
+ z-index: 2;
+ }
+ body {
+ margin-bottom: 60px;
+ }
+ svg.lock-icon {
+ fill: var(--primary-container);
+ stroke: var(--primary);
+ }
+ @property --angle {
+ syntax: "<angle>";
+ initial-value: 0deg;
+ inherits: false;
+ }
+
+ @keyframes rotate {
+ to {
+ --angle: 360deg;
+ }
+ }
+ </style>
<!-- download from https://cdnjs.cloudflare.com/ajax/libs/qrcodejs/1.0.0/qrcode.min.js -->
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</script>
</head>
<body>
- <h1>Payment Required</h1>
- <p>Scan the QR code or follow the link below with your
- <a href="https://wallet.taler.net">GNU Taler</a> wallet.</p>
+ <div class="header">
+ <svg
+ class="lock-icon"
+ viewBox="0 0 28 28"
+ fill="none"
+ xmlns="http://www.w3.org/2000/svg"
+ >
+ <rect x="5" y="12" width="18" height="13" rx="3" stroke-width="1" />
+ <path
+ d="M9.5 12V9a4.5 4.5 0 0 1 9 0v3"
+ stroke-width="1.5"
+ stroke-linecap="round"
+ fill="none"
+ />
+ <circle cx="14" cy="18" r="2" />
+ <line
+ x1="14"
+ y1="20"
+ x2="14"
+ y2="22"
+ stroke-width="1.5"
+ stroke-linecap="round"
+ />
+ </svg>
+ <div class="header-text">
+ <h1>Paivana paywall</h1>
+ <p>The resource requires a payment to access.</p>
+ </div>
+ </div>
- <div id="qrcode"></div>
- <p><a id="talerlink" href="#">Generating payment link...</a></p>
+ <div class="card-container">
+ <div class="card">
+ <!-- QR code + amount -->
+ <div class="qr-wrap">
+ <p id="merchant-host"></p>
- <script>main()</script>
+ <div class="qr-taler-frame">
+ <div style="padding: 10px; border-radius: 20px; background-color: white">
+ <div class="qr-frame" id="qrcode" style="margin: 5px" >
+ </div>
+ </div>
+ <div class="qr-taler-logo">
+ <!-- Taler Logo -->
+ <div style="width: 100px; height: 50px" >
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+ </div>
+ </div>
+ </div>
+
+ <p class="qr-legend">Scan the QR with a GNU Taler wallet</p>
+ </div>
+
+ <!-- instructions -->
+ <div class="steps">
+ <a href="https://www.taler.net/wallet" target="_blank" class="step">
+ <div class="step-num">1</div>
+ <div class="step-body">
+ <p class="step-title">Install</p>
+ <p class="step-desc">
+ If you don't have one yet you can follow the instruction on
+ www.taler.net.
+ </p>
+ </div>
+ </a>
+ <div class="step">
+ <div class="step-num">2</div>
+ <div class="step-body">
+ <p class="step-title">Pay</p>
+ <p class="step-desc">
+ Your wallet will display the details of the transaction.
+ </p>
+ </div>
+ </div>
+ <div class="step">
+ <div class="step-num">3</div>
+ <div class="step-body">
+ <p class="step-title">Access</p>
+ <p class="step-desc">
+ You will be automatically redirected when confirmed.
+ </p>
+ </div>
+ </div>
+ </div>
+
+ <p class="footer-note">
+ Access is granted automatically once the transaction confirms.<br />
+ Need help? <a href="https://www.taler.net/en/">Contact support</a>
+ </p>
+ </div>
+ </div>
+
+ <div class="footer">
+ <a id="talerlink" href="" class="cta">Pay now</a>
+ </div>
+
+ <script>
+ main();
+ </script>
</body>
</html>
