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496 lines
16 KiB
496 lines
16 KiB
<?php
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/**
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*
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* @package Duplicator
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* @copyright (c) 2021, Snapcreek LLC
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*/
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namespace Duplicator\Libs\WpConfig;
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use Exception;
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/**
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* Transforms a wp-config.php file.
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* Fork of wp-cli/trnasformer
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*/
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class WPConfigTransformer
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{
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const REPLACE_TEMP_STIRNG = '_1_2_RePlAcE_3_4_TeMp_5_6_StRiNg_7_8_';
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/**
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* Path to the wp-config.php file.
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*
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* @var string
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*/
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protected $wp_config_path;
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/**
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* Original source of the wp-config.php file.
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*
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* @var string
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*/
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protected $wp_config_src;
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/**
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* Array of parsed configs.
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*
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* @var array
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*/
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protected $wp_configs = array();
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/**
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* Instantiates the class with a valid wp-config.php.
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*
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* @throws Exception If the wp-config.php file is missing.
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* @throws Exception If the wp-config.php file is not writable.
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*
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* @param string $wp_config_path Path to a wp-config.php file.
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*/
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public function __construct($wp_config_path)
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{
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if (! file_exists($wp_config_path)) {
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throw new Exception('wp-config.php file does not exist. Path:' . $wp_config_path);
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}
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// Duplicator Extra
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/*
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if ( ! is_writable( $wp_config_path ) ) {
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throw new Exception( 'wp-config.php file is not writable.' );
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}
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*/
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$this->wp_config_path = $wp_config_path;
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}
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/**
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* Checks if a config exists in the wp-config.php file.
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*
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* @throws Exception If the wp-config.php file is empty.
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* @throws Exception If the requested config type is invalid.
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*
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* @param string $type Config type (constant or variable).
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* @param string $name Config name.
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*
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* @return bool
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*/
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public function exists($type, $name)
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{
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$wp_config_src = file_get_contents($this->wp_config_path);
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if (! trim($wp_config_src)) {
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throw new Exception('wp-config.php file is empty.');
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}
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// SnapCreek custom change
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// Normalize the newline to prevent an issue coming from OSX
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$wp_config_src = str_replace(array("\r\n", "\r"), "\n", $wp_config_src);
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$this->wp_config_src = $wp_config_src;
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$this->wp_configs = $this->parseWpConfig($this->wp_config_src);
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if (! isset($this->wp_configs[ $type ])) {
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throw new Exception("Config type '{$type}' does not exist.");
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}
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return isset($this->wp_configs[ $type ][ $name ]);
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}
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/**
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* Get the value of a config in the wp-config.php file.
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*
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* @throws Exception If the wp-config.php file is empty.
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* @throws Exception If the requested config type is invalid.
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*
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* @param string $type Config type (constant or variable).
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* @param string $name Config name.
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* @param bool $get_real_value if true return real value
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*
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* @return array
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*/
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public function getValue($type, $name, $get_real_value = true)
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{
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$wp_config_src = file_get_contents($this->wp_config_path);
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if (! trim($wp_config_src)) {
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throw new Exception('wp-config.php file is empty.');
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}
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// SnapCreek custom change
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// Normalize the newline to prevent an issue coming from OSX
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$wp_config_src = str_replace(array("\r\n", "\r"), "\n", $wp_config_src);
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$this->wp_config_src = $wp_config_src;
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$this->wp_configs = $this->parseWpConfig($this->wp_config_src);
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if (! isset($this->wp_configs[ $type ])) {
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throw new Exception("Config type '{$type}' does not exist.");
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}
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// Duplicator Extra
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$val = $this->wp_configs[ $type ][ $name ]['value'];
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if ($get_real_value) {
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return self::getRealValFromVal($val);
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} else {
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return $val;
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}
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return $val;
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}
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/**
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* Get typed val from string val
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*
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* @param string $val string value
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*
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* @return mixed
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*/
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public static function getRealValFromVal($val)
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{
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if ($val[0] === '\'') {
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// string with '
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$result = substr($val, 1, strlen($val) - 2);
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return str_replace(array('\\\'', '\\\\'), array('\'', '\\'), $result);
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} elseif ($val[0] === '"') {
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// string with "
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return json_decode(str_replace('\\$', '$', $val));
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} elseif (strcasecmp($val, 'true') === 0) {
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return true;
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} elseif (strcasecmp($val, 'false') === 0) {
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return false;
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} elseif (strcasecmp($val, 'null') === 0) {
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return null;
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} elseif (preg_match('/^[-+]?[0-9]+$/', $val)) {
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return (int) $val;
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} elseif (preg_match('/^[-+]?[0-9]+\.[0-9]+$/', $val)) {
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return (float) $val;
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} else {
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return $val;
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}
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}
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/**
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* Adds a config to the wp-config.php file.
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*
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* @throws Exception If the config value provided is not a string.
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* @throws Exception If the config placement anchor could not be located.
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*
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* @param string $type Config type (constant or variable).
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* @param string $name Config name.
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* @param string $value Config value.
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* @param array $options (optional) Array of special behavior options.
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*
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* @return bool
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*/
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public function add($type, $name, $value, array $options = array())
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{
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if (! is_string($value)) {
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throw new Exception('Config value must be a string.');
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}
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if ($this->exists($type, $name)) {
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return false;
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}
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$defaults = array(
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'raw' => false, // Display value in raw format without quotes.
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'anchor' => "/* That's all, stop editing!", // Config placement anchor string.
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'separator' => PHP_EOL, // Separator between config definition and anchor string.
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'placement' => 'before', // Config placement direction (insert before or after).
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);
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list( $raw, $anchor, $separator, $placement ) = array_values(array_merge($defaults, $options));
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$raw = (bool) $raw;
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$anchor = (string) $anchor;
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$separator = (string) $separator;
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$placement = (string) $placement;
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// Custom code by the SnapCreek Team
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if (false === strpos($this->wp_config_src, $anchor)) {
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$other_anchor_points = array(
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'/** Absolute path to the WordPress directory',
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// ABSPATH defined check with single quote
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"if ( !defined('ABSPATH') )",
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"if ( ! defined( 'ABSPATH' ) )",
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"if (!defined('ABSPATH') )",
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"if(!defined('ABSPATH') )",
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"if(!defined('ABSPATH'))",
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"if ( ! defined( 'ABSPATH' ))",
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"if ( ! defined( 'ABSPATH') )",
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"if ( ! defined('ABSPATH' ) )",
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"if (! defined( 'ABSPATH' ))",
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"if (! defined( 'ABSPATH') )",
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"if (! defined('ABSPATH' ) )",
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"if ( !defined( 'ABSPATH' ))",
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"if ( !defined( 'ABSPATH') )",
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"if ( !defined('ABSPATH' ) )",
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"if( !defined( 'ABSPATH' ))",
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"if( !defined( 'ABSPATH') )",
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"if( !defined('ABSPATH' ) )",
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// ABSPATH defined check with double quote
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'if ( !defined("ABSPATH") )',
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'if ( ! defined( "ABSPATH" ) )',
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'if (!defined("ABSPATH") )',
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'if(!defined("ABSPATH") )',
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'if(!defined("ABSPATH"))',
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'if ( ! defined( "ABSPATH" ))',
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'if ( ! defined( "ABSPATH") )',
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'if ( ! defined("ABSPATH" ) )',
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'if (! defined( "ABSPATH" ))',
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'if (! defined( "ABSPATH") )',
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'if (! defined("ABSPATH" ) )',
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'if ( !defined( "ABSPATH" ))',
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'if ( !defined( "ABSPATH") )',
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'if ( !defined("ABSPATH" ) )',
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'if( !defined( "ABSPATH" ))',
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'if( !defined( "ABSPATH") )',
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'if( !defined("ABSPATH" ) )',
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'/** Sets up WordPress vars and included files',
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'require_once(ABSPATH',
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'require_once ABSPATH',
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'require_once( ABSPATH',
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'require_once',
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"define( 'DB_NAME'",
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'define( "DB_NAME"',
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"define('DB_NAME'",
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'define("DB_NAME"',
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'require',
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'include_once',
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);
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foreach ($other_anchor_points as $anchor_point) {
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$anchor_point = (string) $anchor_point;
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if (false !== strpos($this->wp_config_src, $anchor_point)) {
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$anchor = $anchor_point;
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break;
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}
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}
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}
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if (false === strpos($this->wp_config_src, $anchor)) {
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throw new Exception('Unable to locate placement anchor.');
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}
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$new_src = $this->normalize($type, $name, $this->formatValue($value, $raw));
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$new_src = ( 'after' === $placement ) ? $anchor . $separator . $new_src : $new_src . $separator . $anchor;
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$contents = str_replace($anchor, $new_src, $this->wp_config_src);
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return $this->save($contents);
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}
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/**
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* Updates an existing config in the wp-config.php file.
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*
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* @throws Exception If the config value provided is not a string.
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*
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* @param string $type Config type (constant or variable).
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* @param string $name Config name.
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* @param string $value Config value.
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* @param array $options (optional) Array of special behavior options.
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*
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* @return bool
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*/
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public function update($type, $name, $value, array $options = array())
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{
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if (! is_string($value)) {
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throw new Exception('Config value must be a string.');
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}
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$defaults = array(
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'add' => true, // Add the config if missing.
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'raw' => false, // Display value in raw format without quotes.
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'normalize' => false, // Normalize config output using WP Coding Standards.
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);
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list( $add, $raw, $normalize ) = array_values(array_merge($defaults, $options));
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$add = (bool) $add;
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$raw = (bool) $raw;
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$normalize = (bool) $normalize;
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if (! $this->exists($type, $name)) {
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return ( $add ) ? $this->add($type, $name, $value, $options) : false;
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}
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$old_src = $this->wp_configs[ $type ][ $name ]['src'];
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$old_value = $this->wp_configs[ $type ][ $name ]['value'];
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$new_value = $this->formatValue($value, $raw);
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if ($normalize) {
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$new_src = $this->normalize($type, $name, $new_value);
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} else {
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$new_parts = $this->wp_configs[ $type ][ $name ]['parts'];
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$new_parts[1] = str_replace($old_value, $new_value, $new_parts[1]); // Only edit the value part.
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$new_src = implode('', $new_parts);
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}
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$contents = preg_replace(
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sprintf('/(?<=^|;|<\?php\s|<\?\s)(\s*?)%s/m', preg_quote(trim($old_src), '/')),
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'$1' . self::REPLACE_TEMP_STIRNG,
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$this->wp_config_src
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);
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$contents = str_replace(self::REPLACE_TEMP_STIRNG, trim($new_src), $contents);
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return $this->save($contents);
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}
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/**
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* Removes a config from the wp-config.php file.
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*
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* @param string $type Config type (constant or variable).
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* @param string $name Config name.
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*
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* @return bool
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*/
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public function remove($type, $name)
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{
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if (! $this->exists($type, $name)) {
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return false;
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}
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$pattern = sprintf('/(?<=^|;|<\?php\s|<\?\s)%s\s*(\S|$)/m', preg_quote($this->wp_configs[ $type ][ $name ]['src'], '/'));
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$contents = preg_replace($pattern, '$1', $this->wp_config_src);
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return $this->save($contents);
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}
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/**
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* Applies formatting to a config value.
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*
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* @throws Exception When a raw value is requested for an empty string.
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*
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* @param string $value Config value.
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* @param bool $raw Display value in raw format without quotes.
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*
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* @return mixed
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*/
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protected function formatValue($value, $raw)
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{
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if ($raw && '' === trim($value)) {
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throw new Exception('Raw value for empty string not supported.');
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}
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return ( $raw ) ? $value : var_export($value, true);
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}
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/**
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* Normalizes the source output for a name/value pair.
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*
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* @throws Exception If the requested config type does not support normalization.
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*
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* @param string $type Config type (constant or variable).
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* @param string $name Config name.
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* @param mixed $value Config value.
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*
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* @return string
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*/
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protected function normalize($type, $name, $value)
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{
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if ('constant' === $type) {
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$placeholder = "define( '%s', %s );";
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} elseif ('variable' === $type) {
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$placeholder = '$%s = %s;';
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} else {
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throw new Exception("Unable to normalize config type '{$type}'.");
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}
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return sprintf($placeholder, $name, $value);
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}
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/**
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* Parses the source of a wp-config.php file.
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*
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* @param string $src Config file source.
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*
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* @return array
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*/
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protected function parseWpConfig($src)
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{
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$configs = array();
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$configs['constant'] = array();
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$configs['variable'] = array();
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if (function_exists('token_get_all')) {
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// Strip comments.
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foreach (token_get_all($src) as $token) {
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if (in_array($token[0], array( T_COMMENT, T_DOC_COMMENT ), true)) {
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$src = str_replace($token[1], '', $src);
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}
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}
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}
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preg_match_all(
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'/(?<=^|;|<\?php\s|<\?\s)' .
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'(\h*define\s*\(\s*[\'"](\w*?)[\'"]\s*)(,\s*(\'\'|""|\'.*?[^\\\\]\'|".*?[^\\\\]"|.*?)\s*)' .
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'((?:,\s*(?:true|false)\s*)?\)\s*;)/ims',
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$src,
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$constants
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);
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preg_match_all('/(?<=^|;|<\?php\s|<\?\s)(\h*\$(\w+)\s*=)(\s*(\'\'|""|\'.*?[^\\\\]\'|".*?[^\\\\]"|.*?)\s*;)/ims', $src, $variables);
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if (
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!empty($constants[0]) &&
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!empty($constants[1]) &&
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!empty($constants[2]) &&
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!empty($constants[3]) &&
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!empty($constants[4]) &&
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!empty($constants[5])
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) {
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foreach ($constants[2] as $index => $name) {
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$configs['constant'][ $name ] = array(
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'src' => $constants[0][ $index ],
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'value' => $constants[4][ $index ],
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'parts' => array(
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$constants[1][ $index ],
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$constants[3][ $index ],
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$constants[5][ $index ],
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),
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);
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}
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}
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if (! empty($variables[0]) && ! empty($variables[1]) && ! empty($variables[2]) && ! empty($variables[3]) && ! empty($variables[4])) {
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// Remove duplicate(s), last definition wins.
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$variables[2] = array_reverse(array_unique(array_reverse($variables[2], true)), true);
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foreach ($variables[2] as $index => $name) {
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$configs['variable'][ $name ] = array(
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'src' => $variables[0][ $index ],
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'value' => $variables[4][ $index ],
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'parts' => array(
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$variables[1][ $index ],
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$variables[3][ $index ],
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),
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);
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}
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}
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return $configs;
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}
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/**
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* Saves new contents to the wp-config.php file.
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*
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* @throws Exception If the config file content provided is empty.
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* @throws Exception If there is a failure when saving the wp-config.php file.
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*
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* @param string $contents New config contents.
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*
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* @return bool
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*/
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protected function save($contents)
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{
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if (!trim($contents)) {
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throw new Exception('Cannot save the wp-config.php file with empty contents.');
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}
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if ($contents === $this->wp_config_src) {
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return false;
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}
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$result = file_put_contents($this->wp_config_path, $contents, LOCK_EX);
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if (false === $result) {
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throw new Exception('Failed to update the wp-config.php file.');
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}
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return true;
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}
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}
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