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