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Editing: modules-quur.php

writable 0666

<?php
/**************************************************************************
 *  QR + vCard  MODULE   (v8 — zero proxy leaks on cached pages)
 *  ----------------------------------------------------------------------
 *  • Caches each QR PNG inside the SAME path we embed in the vCard.
 *      vCard  URL line:   https://bestdealon.com/social/<slug>/
 *      Cached PNG:        /social/<slug>/qr.png
 *  • After the first successful fetch **no markup references the proxy**.
 *    Lighthouse and other auditors will not see any /qr-proxy.php URL on
 *    a fully‑cached page.
 **************************************************************************/

/* 1. Get $profile if helper exists -------------------------------------- */
if (!isset($profile) && function_exists('get_profile')) {
    $profile = get_profile();
}

/* 2. Sanity checks ------------------------------------------------------- */
$name   = $profile['display_name'] ?? $profile['handle'] ?? '';
$handle = ltrim($profile['handle'] ?? '', '@');
$slug   = $profile['slug'] ?? '';
$email  = $profile['email'] ?? '';

if (!$name || !$email || !$slug) return;   // nothing useful to do

/* 3. Build vCard --------------------------------------------------------- */
$profileUrl = "https://bestdealon.com/social/$slug/";       // single source‑of‑truth
$vcardLines = [
    'BEGIN:VCARD',
    'VERSION:3.0',
    'FN:'        . $name,
    'NICKNAME:'  . $handle,
    'EMAIL;TYPE=internet:' . $email,
    'URL;TYPE=profile:'    . $profileUrl,
];
if (!empty($profile['website'])) {
    $vcardLines[] = 'URL;TYPE=website:' . $profile['website'];
}
$vcardLines[] = 'END:VCARD';
$vcard = implode("\n", $vcardLines);

/* 4. Determine cache paths ---------------------------------------------- */
$pathFromUrl = parse_url($profileUrl, PHP_URL_PATH);      //   /social/<slug>/
$webPath     = rtrim($pathFromUrl, '/') . '/qr.png';      //   /social/<slug>/qr.png
$filePath    = $_SERVER['DOCUMENT_ROOT'] . $webPath;      // absolute on disk

@mkdir(dirname($filePath), 0775, true);                   // ensure folder exists

$usedProxy = false;                                       // track fallback usage
$qrSrc     = $webPath;                                    // optimistic default

if (!is_readable($filePath)) {                            // cache miss
    $proxy = '/qr-proxy.php?data=' . rawurlencode($vcard);
    $png   = @file_get_contents($proxy);
    if ($png && strncmp($png, "\x89PNG", 4) === 0) {
        @file_put_contents($filePath, $png, LOCK_EX);
    }
    if (!is_readable($filePath)) {                        // even after write
        $usedProxy = true;
        $qrSrc     = $proxy;                              // one‑time fallback
    }
}
?>

<section class="qr-shell">
  <div class="qr-card">
    <img src="<?= htmlspecialchars($qrSrc) ?>"
         width="170" height="170"
         alt="Scan to save contact for <?= htmlspecialchars($name) ?>"
         style="border-radius:14px;box-shadow:0 1.5px 10px #e3eefd">

<h3>Scan to Save Contact</h3>

<button id="dlBtn" class="qr-btn" aria-label="Download contact as vCard">
      📱 Add to Phone (vCard)
    </button>
    <div class="qr-hint">Works on iOS &amp; Android&nbsp;· 9 kB</div>

<?php if ($usedProxy): // first view – noscript must hit the proxy ?>
    <noscript style="margin-top:.7rem;font-size:.9rem">
      <a href="/qr-proxy.php?data=<?= rawurlencode($vcard) ?>"
         download="<?= $handle ?: 'contact' ?>.vcf">
        Download contact card
      </a>
    </noscript>
<?php else: // cached – create a data: link so no proxy URL leaks ?>
    <noscript style="margin-top:.7rem;font-size:.9rem">
      <a href="data:text/vcard,<?= rawurlencode($vcard) ?>"
         download="<?= $handle ?: 'contact' ?>.vcf">
        Download contact card
      </a>
    </noscript>
<?php endif; ?>
  </div>
</section>

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Editing: modules-quur.php

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