Source

function network_step2( $errors = false ) {
	global $wpdb, $is_nginx;

	$hostname          = get_clean_basedomain();
	$slashed_home      = trailingslashit( get_option( 'home' ) );
	$base              = parse_url( $slashed_home, PHP_URL_PATH );
	$document_root_fix = str_replace( '\', '/', realpath( $_SERVER['DOCUMENT_ROOT'] ) );
	$abspath_fix       = str_replace( '\', '/', ABSPATH );
	$home_path         = str_starts_with( $abspath_fix, $document_root_fix ) ? $document_root_fix . $base : get_home_path();
	$wp_siteurl_subdir = preg_replace( '#^' . preg_quote( $home_path, '#' ) . '#', '', $abspath_fix );
	$rewrite_base      = ! empty( $wp_siteurl_subdir ) ? ltrim( trailingslashit( $wp_siteurl_subdir ), '/' ) : '';

	$location_of_wp_config = $abspath_fix;
	if ( ! file_exists( ABSPATH . 'wp-config.php' ) && file_exists( dirname( ABSPATH ) . '/wp-config.php' ) ) {
		$location_of_wp_config = dirname( $abspath_fix );
	}
	$location_of_wp_config = trailingslashit( $location_of_wp_config );

	// Wildcard DNS message.
	if ( is_wp_error( $errors ) ) {
		wp_admin_notice(
			$errors->get_error_message(),
			array(
				'additional_classes' => array( 'error' ),
			)
		);
	}

	if ( $_POST ) {
		if ( allow_subdomain_install() ) {
			$subdomain_install = allow_subdirectory_install() ? ! empty( $_POST['subdomain_install'] ) : true;
		} else {
			$subdomain_install = false;
		}
	} else {
		if ( is_multisite() ) {
			$subdomain_install = is_subdomain_install();
			?>
	<p></p>
			get_var( "SELECT meta_value FROM $wpdb->sitemeta WHERE site_id = 1 AND meta_key = 'subdomain_install'" );

			wp_admin_notice(
				'<strong>' . __( 'Warning:' ) . '</strong> ' . __( 'An existing WordPress network was detected.' ),
				array(
					'additional_classes' => array( 'error' ),
				)
			);
			?>
	<p></p>
			
		<h3></h3>
		<p></p>
		' . __( 'Caution:' ) . '</strong> ';
		$notice_args    = array(
			'type'               => 'warning',
			'additional_classes' => array( 'inline' ),
		);

		if ( file_exists( $home_path . '.htaccess' ) ) {
			$notice_message .= sprintf(
				/* translators: 1: wp-config.php, 2: .htaccess */
				__( 'You should back up your existing %1$s and %2$s files.' ),
				'<code>wp-config.php',
				'.htaccess'
			);
		} elseif ( file_exists( $home_path . 'web.config' ) ) {
			$notice_message .= sprintf(
				/* translators: 1: wp-config.php, 2: web.config */
				__( 'You should back up your existing %1$s and %2$s files.' ),
				'wp-config.php',
				'web.config'
			);
		} else {
			$notice_message .= sprintf(
				/* translators: %s: wp-config.php */
				__( 'You should back up your existing %s file.' ),
				'wp-config.php'
			);
		}

		wp_admin_notice( $notice_message, $notice_args );
	}
	?>
	

		

		above the line reading %3$s:' ),
			'wp-config.php',
			'' . $location_of_wp_config . '',
			/*
			 * translators: This string should only be translated if wp-config-sample.php is localized.
			 * You can check the localized release package or
			 * https://i18n.svn.wordpress.org//branches//dist/wp-config-sample.php
			 */
			'/* ' . __( 'That’s all, stop editing! Happy publishing.' ) . ' */'
		);
		?>
		
		

			wp-config.php'
			);
			?>
		
		define( 'MULTISITE', true );
define( 'SUBDOMAIN_INSTALL',  );
define( 'DOMAIN_CURRENT_SITE', '' );
define( 'PATH_CURRENT_SITE', '' );
define( 'SITE_ID_CURRENT_SITE', 1 );
define( 'BLOG_ID_CURRENT_SITE', 1 );

		 '',
			'SECURE_AUTH_KEY'  => '',
			'LOGGED_IN_KEY'    => '',
			'NONCE_KEY'        => '',
			'AUTH_SALT'        => '',
			'SECURE_AUTH_SALT' => '',
			'LOGGED_IN_SALT'   => '',
			'NONCE_SALT'       => '',
		);
		foreach ( $keys_salts as $c => $v ) {
			if ( defined( $c ) ) {
				unset( $keys_salts[ $c ] );
			}
		}

		if ( ! empty( $keys_salts ) ) {
			$keys_salts_str = '';
			$from_api       = wp_remote_get( 'https://api.wordpress.org/secret-key/1.1/salt/' );
			if ( is_wp_error( $from_api ) ) {
				foreach ( $keys_salts as $c => $v ) {
					$keys_salts_str .= "ndefine( '$c', '" . wp_generate_password( 64, true, true ) . "' );";
				}
			} else {
				$from_api = explode( "n", wp_remote_retrieve_body( $from_api ) );
				foreach ( $keys_salts as $c => $v ) {
					$keys_salts_str .= "ndefine( '$c', '" . substr( array_shift( $from_api ), 28, 64 ) . "' );";
				}
			}
			$num_keys_salts = count( $keys_salts );
			?>
		

			wp-config.php'
				);
			} else {
				printf(
					/* translators: %s: wp-config.php */
					__( 'These unique authentication keys are also missing from your %s file.' ),
					'wp-config.php'
				);
			}
			?>
			
		
		

		<textarea id="network-wpconfig-authentication" class="code" readonly="readonly" cols="100" rows="" aria-describedby="network-wpconfig-authentication-description">
			
		
	

    
        
            
                
                    
                    
                ';
		if ( is_multisite() && get_site_option( 'ms_files_rewriting' ) ) {
			$web_config_file .= '
                
                    
                    
                ';
		}
			$web_config_file .= '
                
                    
                    
                
                
                    
                    
                        
                        
                    
                    
                
                
                    
                    
                
                
                    
                    
                
                
                    
                    
                
            
        
    

';

			echo '
';
			printf(
				/* translators: 1: File name (.htaccess or web.config), 2: File path. */
				__( 'Add the following to your %1$s file in %2$s, replacing other WordPress rules:' ),
				'web.config',
				'' . $home_path . ''
			);
		echo '
';
		if ( ! $subdomain_install && WP_CONTENT_DIR !== ABSPATH . 'wp-content' ) {
			echo '
' . __( 'Warning:' ) . ' ' . __( 'Subdirectory networks may not be fully compatible with custom wp-content directories.' ) . '
';
		}
		?>
			

				web.config'
				);
				?>
			
			
		
	

		
';
		printf(
			/* translators: %s: Documentation URL. */
			__( 'It seems your network is running with Nginx web server. Learn more about further configuration.' ),
			__( 'https://developer.wordpress.org/advanced-administration/server/web-server/nginx/' )
		);
		echo '
';

	else : // End $is_nginx. Construct an .htaccess file instead:

		$ms_files_rewriting = '';
		if ( is_multisite() && get_site_option( 'ms_files_rewriting' ) ) {
			$ms_files_rewriting  = "n# uploaded filesnRewriteRule ^";
			$ms_files_rewriting .= $subdir_match . "files/(.+) {$rewrite_base}" . WPINC . "/ms-files.php?file={$subdir_replacement_12} [L]" . "n";
		}

		$htaccess_file = <<<EOF
RewriteEngine On
RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
RewriteBase {$base}
RewriteRule ^index.php$ - [L]
{$ms_files_rewriting}
# add a trailing slash to /wp-admin
RewriteRule ^{$subdir_match}wp-admin$ {$subdir_replacement_01}wp-admin/ [R=301,L]

RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^ - [L]
RewriteRule ^{$subdir_match}(wp-(content|admin|includes).*) {$rewrite_base}{$subdir_replacement_12} [L]
RewriteRule ^{$subdir_match}(.*.php)$ {$rewrite_base}$subdir_replacement_12 [L]
RewriteRule . index.php [L]

EOF;

		echo '
';
		printf(
			/* translators: 1: File name (.htaccess or web.config), 2: File path. */
			__( 'Add the following to your %1$s file in %2$s, replacing other WordPress rules:' ),
			'.htaccess',
			'' . $home_path . ''
		);
		echo '
';
		if ( ! $subdomain_install && WP_CONTENT_DIR !== ABSPATH . 'wp-content' ) {
			echo '
' . __( 'Warning:' ) . ' ' . __( 'Subdirectory networks may not be fully compatible with custom wp-content directories.' ) . '
';
		}
		?>
			

				.htaccess'
				);
				?>
			
			<textarea id="network-htaccess-rules" class="code" readonly="readonly" cols="100" rows="" aria-describedby="network-htaccess-rules-description">
		
	

		
		
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