350 lines
7.3 KiB
PHP
350 lines
7.3 KiB
PHP
<?php
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/**
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* Debug Logging Utility
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*
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* @package PUM
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* @copyright Copyright (c) 2023, Code Atlantic LLC
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*/
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/**
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* Class PUM_Utils_Logging
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*
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* @since 1.8.0
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*/
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class PUM_Utils_Logging {
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/**
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* Whether the log file is writable.
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*
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* @var bool
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*/
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public $is_writable = false;
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/**
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* Log file name.
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*
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* @var string
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*/
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private $filename = '';
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/**
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* Log file path.
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*
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* @var string
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*/
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private $file = '';
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/**
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* File system API.
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*
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* @var WP_Filesystem_Base
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*/
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private $fs;
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/**
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* Log file content.
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*
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* @var string
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*/
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private $content;
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/**
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* Instance.
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*
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* @var PUM_Utils_Logging
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*/
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public static $instance;
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/**
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* Get instance.
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*
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* @return PUM_Utils_Logging
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*/
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public static function instance() {
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if ( ! isset( self::$instance ) ) {
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self::$instance = new self();
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}
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return self::$instance;
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}
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/**
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* Get things started
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*/
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public function __construct() {
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// On shutdown, save the log file.
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add_action( 'shutdown', [ $this, 'save_logs' ] );
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$this->fs = $this->file_system();
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$this->is_writable = false !== $this->fs && 'direct' === $this->fs->method;
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$upload_dir = PUM_Helpers::get_upload_dir();
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if ( ! $this->fs->is_writable( $upload_dir['basedir'] ) ) {
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$this->is_writable = false;
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}
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$this->init();
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}
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/**
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* Check if logging is enabled.
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*
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* @return bool
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*/
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public function enabled() {
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// Disable logging by adding define( 'PUM_DISABLE_LOGGING', true );.
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return $this->is_writable && ( ! defined( 'PUM_DISABLE_LOGGING' ) || ! PUM_DISABLE_LOGGING );
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}
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/**
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* Get working WP Filesystem instance
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*
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* @return WP_Filesystem_Base|false
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*/
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public function file_system() {
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global $wp_filesystem;
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require_once ABSPATH . 'wp-admin/includes/file.php';
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// If for some reason the include doesn't work as expected just return false.
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if ( ! function_exists( 'WP_Filesystem' ) ) {
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return false;
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}
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$writable = WP_Filesystem( false, '', true );
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// We consider the directory as writable if it uses the direct transport,
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// otherwise credentials would be needed.
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return ( $writable && 'direct' === $wp_filesystem->method ) ? $wp_filesystem : false;
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}
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/**
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* Get things started
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*/
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public function init() {
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$upload_dir = PUM_Helpers::get_upload_dir();
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$file_token = get_option( 'pum_debug_log_token' );
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if ( false === $file_token ) {
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$file_token = uniqid( wp_rand(), true );
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update_option( 'pum_debug_log_token', $file_token );
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}
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$this->filename = "pum-debug-{$file_token}.log"; // ex. pum-debug-5c2f6a9b9b5a3.log.
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$this->file = trailingslashit( $upload_dir['basedir'] ) . $this->filename;
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$old_file = trailingslashit( $upload_dir['basedir'] ) . 'pum-debug.log';
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// If old file exists, move it.
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if ( $this->fs->exists( $old_file ) ) {
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$old_content = $this->get_file( $old_file );
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$this->set_log_content( $old_content, true );
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// Move old log file to new obfuscated location() .
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$this->log_unique( 'Renaming log file.' );
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// Move old file to new location.
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$this->fs->move( $old_file, $this->file );
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if ( $this->fs->exists( $old_file ) ) {
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$this->fs->delete( $old_file );
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}
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} elseif ( ! $this->fs->exists( $this->file ) ) {
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$this->setup_new_log();
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} else {
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$this->content = $this->get_file( $this->file );
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}
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// Truncate long log files.
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if ( $this->fs->exists( $this->file ) && $this->fs->size( $this->file ) >= 1048576 ) {
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$this->truncate_log();
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}
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}
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/**
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* Retrieves the url to the file
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*
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* @returns string
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* @since 1.12.0
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*/
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public function get_file_url() {
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return PUM_Helpers::get_upload_dir_url( $this->filename );
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}
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/**
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* Retrieve the log data
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*
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* @return string
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*/
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public function get_log() {
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return $this->get_log_content();
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}
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/**
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* Log message to file
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*
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* @param string $message The message to log.
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*/
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public function log( $message = '' ) {
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$this->write_to_log( wp_date( 'Y-n-d H:i:s' ) . ' - ' . $message );
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}
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/**
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* Log unique message to file.
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*
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* @param string $message The unique message to log.
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*/
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public function log_unique( $message = '' ) {
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$contents = $this->get_log_content();
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if ( strpos( $contents, $message ) !== false ) {
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return;
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}
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$this->log( $message );
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}
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/**
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* Get the log file contents.
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*
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* @return string
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*/
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public function get_log_content() {
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if ( ! isset( $this->content ) ) {
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$this->content = $this->get_file();
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}
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return $this->content;
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}
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/**
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* Set the log file contents in memory.
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*
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* @param mixed $content The content to set.
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* @param bool $save Whether to save the content to the file immediately.
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* @return void
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*/
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private function set_log_content( $content, $save = false ) {
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$this->content = $content;
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if ( $save ) {
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$this->save_logs();
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}
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}
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/**
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* Retrieve the contents of a file.
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*
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* @param string|boolean $file File to get contents of.
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*
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* @return string
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*/
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protected function get_file( $file = false ) {
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$file = $file ? $file : $this->file;
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if ( ! $this->enabled() ) {
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return '';
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}
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$content = '';
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if ( $this->fs->exists( $file ) ) {
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$content = $this->fs->get_contents( $file );
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}
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return $content;
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}
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/**
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* Write the log message
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*
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* @param string $message The message to write.
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*/
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protected function write_to_log( $message = '' ) {
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if ( ! $this->enabled() ) {
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return;
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}
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$contents = $this->get_log_content();
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// If it doesn't end with a new line, add one. \r\n length is 2.
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if ( substr( $contents, -2 ) !== "\r\n" ) {
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$contents .= "\r\n";
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}
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$this->set_log_content( $contents . $message );
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}
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/**
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* Save the current contents to file.
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*/
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public function save_logs() {
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if ( ! $this->enabled() ) {
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return;
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}
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$this->fs->put_contents( $this->file, $this->content, FS_CHMOD_FILE );
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}
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/**
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* Get a line count.
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*
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* @return int
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*/
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public function count_lines() {
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$file = $this->get_log_content();
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$lines = explode( "\r\n", $file );
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return count( $lines );
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}
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/**
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* Truncates a log file to maximum of 250 lines.
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*/
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public function truncate_log() {
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$content = $this->get_log_content();
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$lines = explode( "\r\n", $content );
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$lines = array_slice( $lines, 0, 250 ); // 50 is how many lines you want to keep
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$truncated_content = implode( "\r\n", $lines );
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$this->set_log_content( $truncated_content, true );
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}
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/**
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* Set up a new log file.
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*
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* @return void
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*/
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public function setup_new_log() {
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$this->set_log_content( "Popup Maker Debug Logs:\r\n" . wp_date( 'Y-n-d H:i:s' ) . " - Log file initialized\r\n", true );
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}
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/**
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* Delete the log file.
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*/
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public function clear_log() {
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// Delete the file.
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@$this->fs->delete( $this->file );
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if ( $this->enabled() ) {
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$this->setup_new_log();
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}
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}
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/**
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* Log a deprecated notice.
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*
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* @param string $func_name Function name.
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* @param string $version Versoin deprecated.
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* @param string $replacement Replacement function (optional).
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*/
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public function log_deprecated_notice( $func_name, $version, $replacement = null ) {
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if ( ! is_null( $replacement ) ) {
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$notice = sprintf( '%1$s is <strong>deprecated</strong> since version %2$s! Use %3$s instead.', $func_name, $version, $replacement );
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} else {
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$notice = sprintf( '%1$s is <strong>deprecated</strong> since version %2$s with no alternative available.', $func_name, $version );
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}
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$this->log_unique( $notice );
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}
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}
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