125 lines
4.1 KiB
PHP
125 lines
4.1 KiB
PHP
<?php
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/**
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* OG Meta Tag Proxy for Social Media Crawlers
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*
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* Setup: Nginx/Apache rewrite rule on kashilo.com:
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* If User-Agent matches crawler → proxy to this script
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* Else → serve static index.html
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*
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* Example Apache config (in VHost):
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* RewriteEngine On
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* RewriteCond %{HTTP_USER_AGENT} Twitterbot|facebookexternalhit|TelegramBot|Discordbot|Slackbot|WhatsApp [NC]
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* RewriteRule ^/listing/(.*)$ https://pow.kashilo.com/og-proxy.php?listing=$1 [P,L]
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*
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* Required modules: sudo a2enmod rewrite proxy proxy_http
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*
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* Example Nginx config:
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* location /listing/ {
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* if ($http_user_agent ~* "Twitterbot|facebookexternalhit|TelegramBot|Discordbot|Slackbot|WhatsApp") {
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* rewrite ^/listing/(.*)$ /og-proxy.php?listing=$1 break;
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* proxy_pass https://pow.kashilo.com;
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* }
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* }
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*
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* HestiaCP: Place config in /home/<USER>/conf/web/<domain>/apache2.ssl.conf_custom
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*/
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require __DIR__ . '/config.php';
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$requestUri = $_SERVER['REQUEST_URI'] ?? '/';
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// Extract listing ID from hash URL or query param
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// Crawlers may receive: /listing/UUID or ?listing=UUID
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$listingId = null;
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if (preg_match('#/listing/([a-f0-9-]{36})#i', $requestUri, $matches)) {
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$listingId = $matches[1];
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}
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if (!$listingId && isset($_GET['listing'])) {
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$listingId = $_GET['listing'];
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}
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$siteUrl = 'https://kashilo.com';
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$defaultTitle = 'kashilo.com – Anonymous Classifieds with Monero';
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$defaultDesc = 'Buy and sell anonymously with Monero. No KYC, no email, E2E encrypted chat.';
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$defaultImage = $siteUrl . '/assets/press/og-image.png';
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$title = $defaultTitle;
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$description = $defaultDesc;
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$image = $defaultImage;
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$url = $siteUrl;
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$type = 'website';
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if ($listingId) {
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$apiUrl = DIRECTUS_URL . '/items/listings/' . urlencode($listingId)
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. '?fields=id,title,description,price,currency,images.directus_files_id.id';
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$ch = curl_init($apiUrl);
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curl_setopt_array($ch, [
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CURLOPT_HTTPHEADER => [
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'Authorization: Bearer ' . DIRECTUS_TOKEN,
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],
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CURLOPT_RETURNTRANSFER => true,
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CURLOPT_TIMEOUT => 5,
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]);
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$response = curl_exec($ch);
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curl_close($ch);
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$data = json_decode($response, true);
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$listing = $data['data'] ?? null;
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if ($listing) {
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$title = htmlspecialchars($listing['title'] ?? '') . ' – kashilo.com';
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$description = htmlspecialchars(mb_substr($listing['description'] ?? '', 0, 160));
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$url = $siteUrl . '/#/listing/' . $listing['id'];
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$type = 'product';
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$imageId = $listing['images'][0]['directus_files_id']['id']
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?? $listing['images'][0]['directus_files_id']
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?? null;
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if ($imageId) {
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$image = DIRECTUS_URL . '/assets/' . $imageId . '?width=1200&height=630&fit=cover';
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}
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if (!empty($listing['price']) && !empty($listing['currency'])) {
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$price = number_format((float)$listing['price'], 2);
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$description .= " | {$price} {$listing['currency']}";
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}
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}
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}
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header('Content-Type: text/html; charset=utf-8');
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?>
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<!DOCTYPE html>
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<html lang="de">
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<head>
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<meta charset="UTF-8">
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<title><?= $title ?></title>
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<meta name="description" content="<?= $description ?>">
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<!-- Open Graph -->
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<meta property="og:type" content="<?= $type ?>">
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<meta property="og:site_name" content="kashilo.com">
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<meta property="og:title" content="<?= $title ?>">
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<meta property="og:description" content="<?= $description ?>">
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<meta property="og:url" content="<?= $url ?>">
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<meta property="og:image" content="<?= $image ?>">
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<meta property="og:image:width" content="1200">
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<meta property="og:image:height" content="630">
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<!-- X (Twitter) Card -->
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<meta name="twitter:card" content="summary_large_image">
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<meta name="twitter:title" content="<?= $title ?>">
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<meta name="twitter:description" content="<?= $description ?>">
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<meta name="twitter:image" content="<?= $image ?>">
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<!-- Redirect real users to the actual page -->
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<meta http-equiv="refresh" content="0;url=<?= $url ?>">
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</head>
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<body>
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<p>Redirecting to <a href="<?= $url ?>"><?= $title ?></a></p>
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</body>
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</html>
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