network_step2( WP_Error $errors = false )

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

	$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         = 0 === strpos( $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 ) )
		echo '<div class="error">' . $errors->get_error_message() . '</div>';

	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><?php _e( 'The original configuration steps are shown here for reference.' ); ?></p>
<?php
		} else {
			$subdomain_install = (bool) $wpdb->get_var( "SELECT meta_value FROM $wpdb->sitemeta WHERE site_id = 1 AND meta_key = 'subdomain_install'" );
?>
	<div class="error"><p><strong><?php _e( 'Warning:' ); ?></strong> <?php _e( 'An existing ClassicPress network was detected.' ); ?></p></div>
	<p><?php _e( 'Please complete the configuration steps. To create a new network, you will need to empty or remove the network database tables.' ); ?></p>
<?php
		}
	}

	$subdir_match          = $subdomain_install ? '' : '([_0-9a-zA-Z-]+/)?';
	$subdir_replacement_01 = $subdomain_install ? '' : '$1';
	$subdir_replacement_12 = $subdomain_install ? '$1' : '$2';

	if ( $_POST || ! is_multisite() ) {
?>
		<h3><?php esc_html_e( 'Enabling the Network' ); ?></h3>
		<p><?php _e( 'Complete the following steps to enable the features for creating a network of sites.' ); ?></p>
		<div class="updated inline"><p><?php
			if ( file_exists( $home_path . '.htaccess' ) ) {
				echo '<strong>' . __( 'Caution:' ) . '</strong> ';
				printf(
					/* translators: 1: wp-config.php 2: .htaccess */
					__( 'We recommend you back up your existing %1$s and %2$s files.' ),
					'<code>wp-config.php</code>',
					'<code>.htaccess</code>'
				);
			} elseif ( file_exists( $home_path . 'web.config' ) ) {
				echo '<strong>' . __( 'Caution:' ) . '</strong> ';
				printf(
					/* translators: 1: wp-config.php 2: web.config */
					__( 'We recommend you back up your existing %1$s and %2$s files.' ),
					'<code>wp-config.php</code>',
					'<code>web.config</code>'
				);
			} else {
				echo '<strong>' . __( 'Caution:' ) . '</strong> ';
				printf(
					/* translators: 1: wp-config.php */
					__( 'We recommend you back up your existing %s file.' ),
					'<code>wp-config.php</code>'
				);
			}
		?></p></div>
<?php
	}
?>
		<ol>
			<li><p><?php printf(
				/* translators: 1: wp-config.php 2: location of wp-config file, 3: translated version of "That's all, stop editing! Happy blogging." */
				__( 'Add the following to your %1$s file in %2$s <strong>above</strong> the line reading %3$s:' ),
				'<code>wp-config.php</code>',
				'<code>' . $location_of_wp_config . '</code>',
				/*
				 * 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/<locale code>/branches/<wp version>/dist/wp-config-sample.php
				 */
				'<code>/* ' . __( 'That&#8217;s all, stop editing! Happy blogging.' ) . ' */</code>'
			); ?></p>
				<textarea class="code" readonly="readonly" cols="100" rows="7">
define('MULTISITE', true);
define('SUBDOMAIN_INSTALL', <?php echo $subdomain_install ? 'true' : 'false'; ?>);
define('DOMAIN_CURRENT_SITE', '<?php echo $hostname; ?>');
define('PATH_CURRENT_SITE', '<?php echo $base; ?>');
define('SITE_ID_CURRENT_SITE', 1);
define('BLOG_ID_CURRENT_SITE', 1);
</textarea>
<?php
	$keys_salts = array( 'AUTH_KEY' => '', '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.classicpress.net/secret-key/1.0/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 );
?>
	<p>
		<?php
			if ( 1 == $num_keys_salts ) {
				printf(
					/* translators: 1: wp-config.php */
					__( 'This unique authentication key is also missing from your %s file.' ),
					'<code>wp-config.php</code>'
				);
			} else {
				printf(
					/* translators: 1: wp-config.php */
					__( 'These unique authentication keys are also missing from your %s file.' ),
					'<code>wp-config.php</code>'
				);
			}
		?>
		<?php _e( 'To make your installation more secure, you should also add:' ); ?>
	</p>
	<textarea class="code" readonly="readonly" cols="100" rows="<?php echo $num_keys_salts; ?>"><?php echo esc_textarea( $keys_salts_str ); ?></textarea>
<?php
	}
?>
</li>
<?php
	if ( iis7_supports_permalinks() ) :
		// IIS doesn't support RewriteBase, all your RewriteBase are belong to us
		$iis_subdir_match = ltrim( $base, '/' ) . $subdir_match;
		$iis_rewrite_base = ltrim( $base, '/' ) . $rewrite_base;
		$iis_subdir_replacement = $subdomain_install ? '' : '{R:1}';

		$web_config_file = '<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <system.webServer>
        <rewrite>
            <rules>
                <rule name="ClassicPress Rule 1" stopProcessing="true">
                    <match url="^index\.php$" ignoreCase="false" />
                    <action type="None" />
                </rule>';
				if ( is_multisite() && get_site_option( 'ms_files_rewriting' ) ) {
					$web_config_file .= '
                <rule name="ClassicPress Rule for Files" stopProcessing="true">
                    <match url="^' . $iis_subdir_match . 'files/(.+)" ignoreCase="false" />
                    <action type="Rewrite" url="' . $iis_rewrite_base . WPINC . '/ms-files.php?file={R:1}" appendQueryString="false" />
                </rule>';
                }
                $web_config_file .= '
                <rule name="ClassicPress Rule 2" stopProcessing="true">
                    <match url="^' . $iis_subdir_match . 'wp-admin$" ignoreCase="false" />
                    <action type="Redirect" url="' . $iis_subdir_replacement . 'wp-admin/" redirectType="Permanent" />
                </rule>
                <rule name="ClassicPress Rule 3" stopProcessing="true">
                    <match url="^" ignoreCase="false" />
                    <conditions logicalGrouping="MatchAny">
                        <add input="{REQUEST_FILENAME}" matchType="IsFile" ignoreCase="false" />
                        <add input="{REQUEST_FILENAME}" matchType="IsDirectory" ignoreCase="false" />
                    </conditions>
                    <action type="None" />
                </rule>
                <rule name="ClassicPress Rule 4" stopProcessing="true">
                    <match url="^' . $iis_subdir_match . '(wp-(content|admin|includes).*)" ignoreCase="false" />
                    <action type="Rewrite" url="' . $iis_rewrite_base . '{R:1}" />
                </rule>
                <rule name="ClassicPress Rule 5" stopProcessing="true">
                    <match url="^' . $iis_subdir_match . '([_0-9a-zA-Z-]+/)?(.*\.php)$" ignoreCase="false" />
                    <action type="Rewrite" url="' . $iis_rewrite_base . '{R:2}" />
                </rule>
                <rule name="ClassicPress Rule 6" stopProcessing="true">
                    <match url="." ignoreCase="false" />
                    <action type="Rewrite" url="index.php" />
                </rule>
            </rules>
        </rewrite>
    </system.webServer>
</configuration>
';

		echo '<li><p>';
		printf(
			/* translators: 1: a filename like .htaccess. 2: a file path. */
			__( 'Add the following to your %1$s file in %2$s, <strong>replacing</strong> other ClassicPress rules:' ),
			'<code>web.config</code>',
			'<code>' . $home_path . '</code>'
		);
		echo '</p>';
		if ( ! $subdomain_install && WP_CONTENT_DIR != ABSPATH . 'wp-content' )
			echo '<p><strong>' . __( 'Warning:' ) . ' ' . __( 'Subdirectory networks may not be fully compatible with custom wp-content directories.' ) . '</strong></p>';
		?>
		<textarea class="code" readonly="readonly" cols="100" rows="20"><?php echo esc_textarea( $web_config_file ); ?>
		</textarea></li>
		</ol>

	<?php else : // end iis7_supports_permalinks(). construct an htaccess file instead:

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

		$htaccess_file = <<<EOF
RewriteEngine On
RewriteBase {$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 '<li><p>';
		printf(
			/* translators: 1: a filename like .htaccess. 2: a file path. */
			__( 'Add the following to your %1$s file in %2$s, <strong>replacing</strong> other ClassicPress rules:' ),
			'<code>.htaccess</code>',
			'<code>' . $home_path . '</code>'
		);
		echo '</p>';
		if ( ! $subdomain_install && WP_CONTENT_DIR != ABSPATH . 'wp-content' )
			echo '<p><strong>' . __( 'Warning:' ) . ' ' . __( 'Subdirectory networks may not be fully compatible with custom wp-content directories.' ) . '</strong></p>';
		?>
		<textarea class="code" readonly="readonly" cols="100" rows="<?php echo substr_count( $htaccess_file, "\n" ) + 1; ?>">
<?php echo esc_textarea( $htaccess_file ); ?></textarea></li>
		</ol>

	<?php endif; // end IIS/Apache code branches.

	if ( !is_multisite() ) { ?>
		<p><?php _e( 'Once you complete these steps, your network is enabled and configured. You will have to log in again.' ); ?> <a href="<?php echo esc_url( wp_login_url() ); ?>"><?php _e( 'Log In' ); ?></a></p>
<?php
	}
}