https://fasosportstv.com/wp-content/plugins/wpstream/public/js/wpstream-qr.js?ver=4.13.2

1/*global qrcode*/
2/*
3 * wpstream-qr.js
4 *
5 * Local, in-browser QR-code generation for the Larix "scan to configure" flow.
6 *
7 * Previously the Larix QR was built by sending the full RTMP URL + secret stream
8 * key to a third-party image service (qrcode.tec-it.com) as a query parameter,
9 * disclosing the key to that provider and its logs (SEC-05 / TASK-06). This module
10 * generates the QR entirely on the client from the bundled `qrcode-generator`
11 * library, so no credential ever leaves the page.
12 *
13 * Single public entry point, used by both start_streaming.js call sites:
14 *   wpstreamRenderQr( imgElement, text )
15 */
16
17/**
18 * Render `text` as a QR code into an <img> element, using a locally bundled
19 * generator. Produces a `data:image/gif` URI and assigns it to the image's src;
20 * nothing is requested from the network.
21 *
22 * @param {HTMLImageElement|jQuery} imgElement The target <img> (raw node or jQuery-wrapped).
23 * @param {string}                  text       The payload to encode (e.g. the Larix deep-link).
24 * @returns {boolean} true if a QR was rendered, false if inputs/library were unusable.
25 */
26function wpstreamRenderQr( imgElement, text ) {
27    // Normalise a jQuery-wrapped element down to the underlying DOM node.
28    var img = ( imgElement && imgElement.jquery ) ? imgElement.get( 0 ) : imgElement;
29
30    // Fail closed on missing target, empty payload, or an unloaded library —
31    // never fall back to a remote generator.
32    if ( ! img || typeof text !== 'string' || text === '' || typeof qrcode !== 'function' ) {
33        return false;
34    }
35
36    // Build the QR: typeNumber 0 auto-selects the smallest size that fits the data,
37    // error-correction level 'M' matches the density the old service produced.
38    var qr = qrcode( 0, 'M' );
39    qr.addData( text );
40    qr.make();
41
42    // cellSize 4px, 8px quiet-zone margin — a compact, scannable image for the modal.
43    img.src = qr.createDataURL( 4, 8 );
44    return true;
45}
46
47// Expose on window so it is reachable from start_streaming.js (no module system here).
48window.wpstreamRenderQr = wpstreamRenderQr;