<?php

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/**

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* The plugin logging class.

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*

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* @package LiteSpeed

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* @since 1.1.2

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*/

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namespace LiteSpeed;

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defined( 'WPINC' ) || exit();

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/**

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* Centralized debug logging utilities for LiteSpeed Cache.

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*/

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class Debug2 extends Root {

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/**

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* Active log file path.

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*

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* @var string

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*/

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private static $log_path;

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/**

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* Directory prefix for all log files.

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*

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* @var string

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*/

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private static $log_path_prefix;

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/**

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* Request-specific log line prefix.

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*

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* @var string

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*/

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private static $_prefix;

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const TYPE_CLEAR_LOG = 'clear_log';

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const TYPE_BETA_TEST = 'beta_test';

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const BETA_TEST_URL = 'beta_test_url';

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const BETA_TEST_URL_WP = 'https://downloads.wordpress.org/plugin/litespeed-cache.zip';

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/**

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* Constructor.

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*

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* NOTE: until LSCWP_LOG is defined, calls to WP filters are not logged to

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* avoid a recursion loop inside log_filters().

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*

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* @since 1.1.2

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* @access public

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*/

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public function __construct() {

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self::$log_path_prefix = LITESPEED_STATIC_DIR . '/debug/';

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// Maybe move legacy log files

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$this->_maybe_init_folder();

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self::$log_path = $this->path( 'debug' );

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$ua = isset( $_SERVER['HTTP_USER_AGENT'] )

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? sanitize_text_field( wp_unslash( $_SERVER['HTTP_USER_AGENT'] ) )

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: '';

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if ( '' !== $ua && 0 === strpos( $ua, 'lscache_' ) ) {

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self::$log_path = $this->path( 'crawler' );

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}

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! defined( 'LSCWP_LOG_TAG' ) && define( 'LSCWP_LOG_TAG', get_current_blog_id() );

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if ( $this->conf( Base::O_DEBUG_LEVEL ) ) {

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! defined( 'LSCWP_LOG_MORE' ) && define( 'LSCWP_LOG_MORE', true );

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}

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defined( 'LSCWP_DEBUG_EXC_STRINGS' ) || define( 'LSCWP_DEBUG_EXC_STRINGS', $this->conf( Base::O_DEBUG_EXC_STRINGS ) );

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}

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/**

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* Disable all functionalities temporarily (toggle).

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*

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* @since 7.4

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* @access public

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*

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* @param int $time How long (in seconds) to disable LSC functions.

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*/

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public static function tmp_disable( $time = 86400 ) {

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$conf = Conf::cls();

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$disabled = self::cls()->conf( Base::DEBUG_TMP_DISABLE );

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if ( 0 === $disabled ) {

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$conf->update_confs( [ Base::DEBUG_TMP_DISABLE => time() + (int) $time ] );

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self::debug2( 'LiteSpeed Cache temporary disabled.' );

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return;

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}

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$conf->update_confs( [ Base::DEBUG_TMP_DISABLE => 0 ] );

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self::debug2( 'LiteSpeed Cache reactivated.' );

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}

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/**

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* Is the temporary disable active? If expired, re-enable.

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*

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* @since 7.4

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* @access public

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*

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* @return bool

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*/

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public static function is_tmp_disable() {

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$disabled_time = self::cls()->conf( Base::DEBUG_TMP_DISABLE );

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if ( 0 === $disabled_time ) {

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return false;

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}

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if ( time() < (int) $disabled_time ) {

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return true;

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}

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Conf::cls()->update_confs( [ Base::DEBUG_TMP_DISABLE => 0 ] );

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return false;

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}

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/**

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* Ensure log directory exists and move legacy logs into it.

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*

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* @since 6.5

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* @access private

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*/

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private function _maybe_init_folder() {

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if ( file_exists( self::$log_path_prefix . 'index.php' ) ) {

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return;

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}

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File::save( self::$log_path_prefix . 'index.php', '<?php // Silence is golden.', true );

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$logs = [ 'debug', 'debug.purge', 'crawler' ];

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foreach ( $logs as $log ) {

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$old_path = LSCWP_CONTENT_DIR . '/' . $log . '.log';

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$new_path = $this->path( $log );

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if ( file_exists( $old_path ) && ! file_exists( $new_path ) ) {

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// phpcs:ignore WordPress.WP.AlternativeFunctions.rename_rename -- Moving legacy log files during migration

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rename( $old_path, $new_path );

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}

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}

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}

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/**

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* Get absolute path for a log type.

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*

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* @since 6.5

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* @param string $type Log type (debug|purge|crawler).

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* @return string

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*/

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public function path( $type ) {

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return self::$log_path_prefix . self::FilePath( $type );

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}

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/**

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* Get fixed filename for a log type.

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*

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* @since 6.5

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* @param string $type Log type (debug|debug.purge|crawler).

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* @return string

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*/

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public static function FilePath( $type ) {

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if ( 'debug.purge' === $type ) {

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$type = 'purge';

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}

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$key = defined( 'AUTH_KEY' ) ? AUTH_KEY : md5( __FILE__ );

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$rand = substr( md5( substr( $key, -16 ) ), -16 );

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return $type . $rand . '.log';

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}

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/**

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* Write end-of-request markers and response timing.

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*

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* @since 4.7

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* @access public

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* @return void

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*/

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public static function ended() {

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$headers = headers_list();

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foreach ( $headers as $key => $header ) {

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if ( 0 === stripos( $header, 'Set-Cookie' ) ) {

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unset( $headers[ $key ] );

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}

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}

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self::debug( 'Response headers', $headers );

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$elapsed_time = number_format( ( microtime( true ) - LSCWP_TS_0 ) * 1000, 2 );

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self::debug( "End response\n--------------------------------------------------Duration: " . $elapsed_time . " ms------------------------------\n" );

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}

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/**

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* Run beta test upgrade. Accepts a direct ZIP URL or attempts to derive one.

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*

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* @since 2.9.5

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* @access public

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*

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* @param string|false $zip ZIP URL or false to read from request.

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* @return void

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*/

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public function beta_test( $zip = false ) {

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if ( ! $zip ) {

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// phpcs:ignore WordPress.Security.NonceVerification.Recommended

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if ( empty( $_REQUEST[ self::BETA_TEST_URL ] ) ) {

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return;

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}

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// phpcs:ignore WordPress.Security.NonceVerification.Recommended

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$zip = sanitize_text_field( wp_unslash( $_REQUEST[ self::BETA_TEST_URL ] ) );

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if ( self::BETA_TEST_URL_WP !== $zip ) {

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if ( 'latest' === $zip ) {

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$zip = self::BETA_TEST_URL_WP;

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} else {

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// Generate zip url

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$zip = $this->_package_zip( $zip );

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}

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}

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}

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if ( ! $zip ) {

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self::debug( '[Debug2] ❌ No ZIP file' );

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return;

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}

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self::debug( '[Debug2] ZIP file ' . $zip );

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$update_plugins = get_site_transient( 'update_plugins' );

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if ( ! is_object( $update_plugins ) ) {

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$update_plugins = new \stdClass();

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}

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$plugin_info = new \stdClass();

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$plugin_info->new_version = Core::VER;

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$plugin_info->slug = Core::PLUGIN_NAME;

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$plugin_info->plugin = Core::PLUGIN_FILE;

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$plugin_info->package = $zip;

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$plugin_info->url = 'https://wordpress.org/plugins/litespeed-cache/';

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$update_plugins->response[ Core::PLUGIN_FILE ] = $plugin_info;

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set_site_transient( 'update_plugins', $update_plugins );

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Activation::cls()->upgrade();

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}

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/**

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* Resolve a GitHub commit-ish into a downloadable ZIP URL via QC API.

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*

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* @since 2.9.5

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* @access private

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*

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* @param string $commit Commit hash/branch/tag.

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* @return string|false

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*/

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private function _package_zip( $commit ) {

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$data = [

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'commit' => $commit,

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];

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$res = Cloud::get( Cloud::API_BETA_TEST, $data );

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if ( empty( $res['zip'] ) ) {

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return false;

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}

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return $res['zip'];

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}

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/**

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* Write purge headers into a dedicated purge log.

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*

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* @since 2.7

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* @access public

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*

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* @param string $purge_header The Purge header value.

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* @return void

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*/

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public static function log_purge( $purge_header ) {

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if ( ! defined( 'LSCWP_LOG' ) && ! defined( 'LSCWP_LOG_BYPASS_NOTADMIN' ) ) {

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return;

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}

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$purge_file = self::cls()->path( 'purge' );

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self::cls()->_init_request( $purge_file );

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$msg = $purge_header . self::_backtrace_info( 6 );

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File::append( $purge_file, self::format_message( $msg ) );

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}

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/**

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* Initialize logging for current request if enabled.

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*

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* @since 1.1.0

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* @access public

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* @return void

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*/

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public function init() {

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if ( defined( 'LSCWP_LOG' ) ) {

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return;

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}

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$debug = $this->conf( Base::O_DEBUG );

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if ( Base::VAL_ON2 === $debug ) {

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if ( ! $this->cls( 'Router' )->is_admin_ip() ) {

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defined( 'LSCWP_LOG_BYPASS_NOTADMIN' ) || define( 'LSCWP_LOG_BYPASS_NOTADMIN', true );

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return;

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}

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}

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/**

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* Check if hit URI includes/excludes

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* This is after LSCWP_LOG_BYPASS_NOTADMIN to make `log_purge()` still work

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*

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* @since 3.0

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*/

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$list = $this->conf( Base::O_DEBUG_INC );

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if ( $list ) {

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$request_uri = isset( $_SERVER['REQUEST_URI'] ) ? sanitize_text_field( wp_unslash( $_SERVER['REQUEST_URI'] ) ) : '';

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$result = Utility::str_hit_array( $request_uri, $list );

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if ( ! $result ) {

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return;

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}

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}

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$list = $this->conf( Base::O_DEBUG_EXC );

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if ( $list ) {

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$request_uri = isset( $_SERVER['REQUEST_URI'] ) ? sanitize_text_field( wp_unslash( $_SERVER['REQUEST_URI'] ) ) : '';

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$result = Utility::str_hit_array( $request_uri, $list );

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if ( $result ) {

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return;

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}

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}

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if ( ! defined( 'LSCWP_LOG' ) ) {

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$this->_init_request();

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define( 'LSCWP_LOG', true );

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}

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}

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/**

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* Create the initial log record with request context.

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*

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* @since 1.0.12

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* @access private

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*

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* @param string|null $log_file Optional specific log file path.

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* @return void

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*/

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private function _init_request( $log_file = null ) {

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if ( ! $log_file ) {

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$log_file = self::$log_path;

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}

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// Rotate if exceeding configured size (MiB).

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$log_file_size = (int) $this->conf( Base::O_DEBUG_FILESIZE );

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if ( file_exists( $log_file ) && filesize( $log_file ) > $log_file_size * 1000000 ) {

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File::save( $log_file, '' );

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}

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// Add extra spacing if last write was > 2 seconds ago.

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if ( file_exists( $log_file ) && ( time() - filemtime( $log_file ) ) > 2 ) {

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File::append( $log_file, "\n\n\n\n" );

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}

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if ( 'cli' === PHP_SAPI ) {

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return;

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}

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$servervars = array(

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'Query String' => '',

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'HTTP_ACCEPT' => '',

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'HTTP_USER_AGENT' => '',

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'HTTP_ACCEPT_ENCODING' => '',

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'HTTP_COOKIE' => '',

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'REQUEST_METHOD' => '',

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'SERVER_PROTOCOL' => '',

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'X-LSCACHE' => '',

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'LSCACHE_VARY_COOKIE' => '',

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'LSCACHE_VARY_VALUE' => '',

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'ESI_CONTENT_TYPE' => '',

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);

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$server = array_merge($servervars, $_SERVER);

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$params = array();

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if ( isset( $_SERVER['HTTPS'] ) && 'on' === $_SERVER['HTTPS'] ) {

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$server['SERVER_PROTOCOL'] .= ' (HTTPS) ';

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}

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$param = sprintf('💓 ------%s %s %s', $server['REQUEST_METHOD'], $server['SERVER_PROTOCOL'], strtok($server['REQUEST_URI'], '?'));

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$qs = !empty($server['QUERY_STRING']) ? $server['QUERY_STRING'] : '';

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if ( $this->conf( Base::O_DEBUG_COLLAPSE_QS ) ) {

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$qs = $this->_omit_long_message( $qs );

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if ( $qs ) {

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$param .= ' ? ' . $qs;

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}

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$params[] = $param;

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} else {

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$params[] = $param;

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$params[] = 'Query String: ' . $qs;

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}

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if ( ! empty( $server['HTTP_REFERER'] ) ) {

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$params[] = 'HTTP_REFERER: ' . $this->_omit_long_message( $server['HTTP_REFERER'] );

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}

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if ( defined( 'LSCWP_LOG_MORE' ) ) {

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$params[] = 'User Agent: ' . $this->_omit_long_message( $server['HTTP_USER_AGENT'] );

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$params[] = 'Accept: ' . $server['HTTP_ACCEPT'];

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$params[] = 'Accept Encoding: ' . $server['HTTP_ACCEPT_ENCODING'];

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}

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if ( isset( $_COOKIE['_lscache_vary'] ) ) {

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$params[] = 'Cookie _lscache_vary: ' . sanitize_text_field( wp_unslash( $_COOKIE['_lscache_vary'] ) );

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}

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if ( defined( 'LSCWP_LOG_MORE' ) ) {

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$params[] = 'X-LSCACHE: ' . ( ! empty( $server['X-LSCACHE'] ) ? 'true' : 'false' );

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}

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if ( $server['LSCACHE_VARY_COOKIE'] ) {

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$params[] = 'LSCACHE_VARY_COOKIE: ' . $server['LSCACHE_VARY_COOKIE'];

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}

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if ( $server['LSCACHE_VARY_VALUE'] ) {

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$params[] = 'LSCACHE_VARY_VALUE: ' . $server['LSCACHE_VARY_VALUE'];

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}

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if ( $server['ESI_CONTENT_TYPE'] ) {

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$params[] = 'ESI_CONTENT_TYPE: ' . $server['ESI_CONTENT_TYPE'];

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}

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$request = array_map( __CLASS__ . '::format_message', $params );

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File::append( $log_file, $request );

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}

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/**

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* Trim long message to keep logs compact.

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*

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* @since 6.3

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* @param string $msg Message.

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* @return string

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*/

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private function _omit_long_message( $msg ) {

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if ( strlen( $msg ) > 53 ) {

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$msg = substr( $msg, 0, 53 ) . '...';

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}

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return $msg;

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}

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[451] Fix | Delete

/**

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* Format a single log line with timestamp and prefix.

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*

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* @since 1.0.12

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* @access private

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*

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* @param string $msg Message to log.

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* @return string Formatted line.

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*/

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private static function format_message( $msg ) {

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if ( ! defined( 'LSCWP_LOG_TAG' ) ) {

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return $msg . "\n";

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}

[464] Fix | Delete

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if ( ! isset( self::$_prefix ) ) {

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// address/identity.

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if ( 'cli' === PHP_SAPI ) {

[468] Fix | Delete

$addr = '=CLI=';

[469] Fix | Delete

if ( isset( $_SERVER['USER'] ) ) {

[470] Fix | Delete

$addr .= sanitize_text_field( wp_unslash( $_SERVER['USER'] ) );

[471] Fix | Delete

} elseif ( ! empty( $_SERVER['HTTP_X_FORWARDED_FOR'] ) ) {

[472] Fix | Delete

$addr .= sanitize_text_field( wp_unslash( $_SERVER['HTTP_X_FORWARDED_FOR'] ) );

[473] Fix | Delete

}

[474] Fix | Delete

} else {

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$ip = isset( $_SERVER['REMOTE_ADDR'] ) ? sanitize_text_field( wp_unslash( $_SERVER['REMOTE_ADDR'] ) ) : '';

[476] Fix | Delete

$port = isset( $_SERVER['REMOTE_PORT'] ) ? sanitize_text_field( wp_unslash( $_SERVER['REMOTE_PORT'] ) ) : '';

[477] Fix | Delete

$addr = "$ip:$port";

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}

[479] Fix | Delete

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self::$_prefix = sprintf( ' [%s %s %s] ', $addr, LSCWP_LOG_TAG, Str::rrand( 3 ) );

[481] Fix | Delete

}

[482] Fix | Delete

[483] Fix | Delete

list( $usec, $sec ) = explode( ' ', microtime() );

[484] Fix | Delete

[485] Fix | Delete

// Use gmdate to avoid tz-related warnings; apply offset if defined.

[486] Fix | Delete

$ts = gmdate( 'm/d/y H:i:s', (int) $sec + ( defined( 'LITESPEED_TIME_OFFSET' ) ? (int) LITESPEED_TIME_OFFSET : 0 ) );

[487] Fix | Delete

[488] Fix | Delete

return $ts . substr( $usec, 1, 4 ) . self::$_prefix . $msg . "\n";

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}

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[491] Fix | Delete

/**

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* Log a debug message.

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*

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* @since 1.1.3

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* @access public

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*

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* @param string $msg Message to write.

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* @param int|array $backtrace_limit Depth for backtrace or payload to append.

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