File "network.php"
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<?php
function network_domain_check()
{
global $wpdb;
$sql = $wpdb->prepare('SHOW TABLES LIKE %s', $wpdb->esc_like($wpdb->site));
if ($wpdb->get_var($sql)) {
return $wpdb->get_var("SELECT domain FROM {$wpdb->site} ORDER BY id ASC LIMIT 1");
}
return false;
}
function allow_subdomain_install()
{
$domain = preg_replace('|https?://([^/]+)|', '$1', get_option('home'));
if (parse_url(get_option('home'), PHP_URL_PATH) || 'localhost' === $domain || preg_match('|^[0-9]+\\.[0-9]+\\.[0-9]+\\.[0-9]+$|', $domain)) {
return false;
}
return true;
}
function allow_subdirectory_install()
{
global $wpdb;
if (apply_filters('allow_subdirectory_install', false)) {
return true;
}
if (defined('ALLOW_SUBDIRECTORY_INSTALL') && ALLOW_SUBDIRECTORY_INSTALL) {
return true;
}
$post = $wpdb->get_row("SELECT ID FROM {$wpdb->posts} WHERE post_date < DATE_SUB(NOW(), INTERVAL 1 MONTH) AND post_status = 'publish'");
if (empty($post)) {
return true;
}
return false;
}
function get_clean_basedomain()
{
$existing_domain = network_domain_check();
if ($existing_domain) {
return $existing_domain;
}
$domain = preg_replace('|https?://|', '', get_option('siteurl'));
$slash = strpos($domain, '/');
if ($slash) {
$domain = substr($domain, 0, $slash);
}
return $domain;
}
function network_step1($errors = false)
{
global $is_apache;
if (defined('DO_NOT_UPGRADE_GLOBAL_TABLES')) {
echo '<div class="error"><p><strong>' . __('Error:') . '</strong> ' . sprintf(__('The constant %s cannot be defined when creating a network.'), '<code>DO_NOT_UPGRADE_GLOBAL_TABLES</code>') . '</p></div>';
echo '</div>';
require_once ABSPATH . 'wp-admin/admin-footer.php';
die;
}
$active_plugins = get_option('active_plugins');
if (!empty($active_plugins)) {
echo '<div class="notice notice-warning"><p><strong>' . __('Warning:') . '</strong> ' . sprintf(__('Please <a href="%s">deactivate your plugins</a> before enabling the Network feature.'), admin_url('plugins.php?plugin_status=active')) . '</p></div>';
echo '<p>' . __('Once the network is created, you may reactivate your plugins.') . '</p>';
echo '</div>';
require_once ABSPATH . 'wp-admin/admin-footer.php';
die;
}
$hostname = get_clean_basedomain();
$has_ports = strstr($hostname, ':');
if (false !== $has_ports && !in_array($has_ports, array(':80', ':443'), true)) {
echo '<div class="error"><p><strong>' . __('Error:') . '</strong> ' . __('You cannot install a network of sites with your server address.') . '</p></div>';
echo '<p>' . sprintf(__('You cannot use port numbers such as %s.'), '<code>' . $has_ports . '</code>') . '</p>';
echo '<a href="' . esc_url(admin_url()) . '">' . __('Go to Dashboard') . '</a>';
echo '</div>';
require_once ABSPATH . 'wp-admin/admin-footer.php';
die;
}
echo '<form method="post">';
wp_nonce_field('install-network-1');
$error_codes = array();
if (is_wp_error($errors)) {
echo '<div class="error"><p><strong>' . __('Error: The network could not be created.') . '</strong></p>';
foreach ($errors->get_error_messages() as $error) {
echo "<p>{$error}</p>";
}
echo '</div>';
$error_codes = $errors->get_error_codes();
}
if (!empty($_POST['sitename']) && !in_array('empty_sitename', $error_codes, true)) {
$site_name = $_POST['sitename'];
} else {
$site_name = sprintf(__('%s Sites'), get_option('blogname'));
}
if (!empty($_POST['email']) && !in_array('invalid_email', $error_codes, true)) {
$admin_email = $_POST['email'];
} else {
$admin_email = get_option('admin_email');
}
?>
<p><?php
_e('Welcome to the Network installation process!');
?></p>
<p><?php
_e('Fill in the information below and you’ll be on your way to creating a network of WordPress sites. We will create configuration files in the next step.');
?></p>
<?php
if (isset($_POST['subdomain_install'])) {
$subdomain_install = (bool) $_POST['subdomain_install'];
} elseif (apache_mod_loaded('mod_rewrite')) {
$subdomain_install = true;
} elseif (!allow_subdirectory_install()) {
$subdomain_install = true;
} else {
$subdomain_install = false;
$got_mod_rewrite = got_mod_rewrite();
if ($got_mod_rewrite) {
echo '<div class="updated inline"><p><strong>' . __('Note:') . '</strong> ';
printf(__('Please make sure the Apache %s module is installed as it will be used at the end of this installation.'), '<code>mod_rewrite</code>');
echo '</p>';
} elseif ($is_apache) {
echo '<div class="error inline"><p><strong>' . __('Warning:') . '</strong> ';
printf(__('It looks like the Apache %s module is not installed.'), '<code>mod_rewrite</code>');
echo '</p>';
}
if ($got_mod_rewrite || $is_apache) {
echo '<p>';
printf(__('If %1$s is disabled, ask your administrator to enable that module, or look at the <a href="%2$s">Apache documentation</a> or <a href="%3$s">elsewhere</a> for help setting it up.'), '<code>mod_rewrite</code>', 'https://httpd.apache.org/docs/mod/mod_rewrite.html', 'https://www.google.com/search?q=apache+mod_rewrite');
echo '</p></div>';
}
}
if (allow_subdomain_install() && allow_subdirectory_install()) {
?>
<h3><?php
esc_html_e('Addresses of Sites in your Network');
?></h3>
<p><?php
_e('Please choose whether you would like sites in your WordPress network to use sub-domains or sub-directories.');
?>
<strong><?php
_e('You cannot change this later.');
?></strong></p>
<p><?php
_e('You will need a wildcard DNS record if you are going to use the virtual host (sub-domain) functionality.');
?></p>
<?php
?>
<table class="form-table" role="presentation">
<tr>
<th><label><input type="radio" name="subdomain_install" value="1"<?php
checked($subdomain_install);
?> /> <?php
_e('Sub-domains');
?></label></th>
<td>
<?php
printf(_x('like <code>site1.%1$s</code> and <code>site2.%1$s</code>', 'subdomain examples'), $hostname);
?>
</td>
</tr>
<tr>
<th><label><input type="radio" name="subdomain_install" value="0"<?php
checked(!$subdomain_install);
?> /> <?php
_e('Sub-directories');
?></label></th>
<td>
<?php
printf(_x('like <code>%1$s/site1</code> and <code>%1$s/site2</code>', 'subdirectory examples'), $hostname);
?>
</td>
</tr>
</table>
<?php
}
if (WP_CONTENT_DIR !== ABSPATH . 'wp-content' && (allow_subdirectory_install() || !allow_subdomain_install())) {
echo '<div class="error inline"><p><strong>' . __('Warning:') . '</strong> ' . __('Subdirectory networks may not be fully compatible with custom wp-content directories.') . '</p></div>';
}
$is_www = 0 === strpos($hostname, 'www.');
if ($is_www) {
?>
<h3><?php
esc_html_e('Server Address');
?></h3>
<p>
<?php
printf(__('We recommend you change your site domain to %1$s before enabling the network feature. It will still be possible to visit your site using the %3$s prefix with an address like %2$s but any links will not have the %3$s prefix.'), '<code>' . substr($hostname, 4) . '</code>', '<code>' . $hostname . '</code>', '<code>www</code>');
?>
</p>
<table class="form-table" role="presentation">
<tr>
<th scope='row'><?php
esc_html_e('Server Address');
?></th>
<td>
<?php
printf(__('The internet address of your network will be %s.'), '<code>' . $hostname . '</code>');
?>
</td>
</tr>
</table>
<?php
}
?>
<h3><?php
esc_html_e('Network Details');
?></h3>
<table class="form-table" role="presentation">
<?php
if ('localhost' === $hostname) {
?>
<tr>
<th scope="row"><?php
esc_html_e('Sub-directory Installation');
?></th>
<td>
<?php
printf(__('Because you are using %1$s, the sites in your WordPress network must use sub-directories. Consider using %2$s if you wish to use sub-domains.'), '<code>localhost</code>', '<code>localhost.localdomain</code>');
if (!allow_subdirectory_install()) {
echo ' <strong>' . __('Warning:') . ' ' . __('The main site in a sub-directory installation will need to use a modified permalink structure, potentially breaking existing links.') . '</strong>';
}
?>
</td>
</tr>
<?php
} elseif (!allow_subdomain_install()) {
?>
<tr>
<th scope="row"><?php
esc_html_e('Sub-directory Installation');
?></th>
<td>
<?php
_e('Because your installation is in a directory, the sites in your WordPress network must use sub-directories.');
if (!allow_subdirectory_install()) {
echo ' <strong>' . __('Warning:') . ' ' . __('The main site in a sub-directory installation will need to use a modified permalink structure, potentially breaking existing links.') . '</strong>';
}
?>
</td>
</tr>
<?php
} elseif (!allow_subdirectory_install()) {
?>
<tr>
<th scope="row"><?php
esc_html_e('Sub-domain Installation');
?></th>
<td>
<?php
_e('Because your installation is not new, the sites in your WordPress network must use sub-domains.');
echo ' <strong>' . __('The main site in a sub-directory installation will need to use a modified permalink structure, potentially breaking existing links.') . '</strong>';
?>
</td>
</tr>
<?php
}
?>
<?php
if (!$is_www) {
?>
<tr>
<th scope='row'><?php
esc_html_e('Server Address');
?></th>
<td>
<?php
printf(__('The internet address of your network will be %s.'), '<code>' . $hostname . '</code>');
?>
</td>
</tr>
<?php
}
?>
<tr>
<th scope='row'><label for="sitename"><?php
esc_html_e('Network Title');
?></label></th>
<td>
<input name='sitename' id='sitename' type='text' size='45' value='<?php
echo esc_attr($site_name);
?>' />
<p class="description">
<?php
_e('What would you like to call your network?');
?>
</p>
</td>
</tr>
<tr>
<th scope='row'><label for="email"><?php
esc_html_e('Network Admin Email');
?></label></th>
<td>
<input name='email' id='email' type='text' size='45' value='<?php
echo esc_attr($admin_email);
?>' />
<p class="description">
<?php
_e('Your email address.');
?>
</p>
</td>
</tr>
</table>
<?php
submit_button(__('Install'), 'primary', 'submit');
?>
</form>
<?php
}
function network_step2($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);
$home_path = 0 === strpos($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);
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 WordPress 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="notice notice-warning inline"><p>
<?php
if (file_exists($home_path . '.htaccess')) {
echo '<strong>' . __('Caution:') . '</strong> ';
printf(__('We recommend you back up your existing %1$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(__('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(__('We recommend you back up your existing %s file.'), '<code>wp-config.php</code>');
}
?>
</p></div>
<?php
}
?>
<ol>
<li><p>
<?php
printf(__('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>', '<code>/* ' . __('That’s all, stop editing! Happy publishing.') . ' */</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 = '';
$from_api = wp_remote_get('https://api.wordpress.org/secret-key/1.1/salt/');
if (is_wp_error($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);
?>
<p>
<?php
if (1 === $num_keys_salts) {
printf(__('This unique authentication key is also missing from your %s file.'), '<code>wp-config.php</code>');
} else {
printf(__('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()) {
$iis_subdir_match = ltrim($base, '/') . $subdir_match;
$iis_rewrite_base = ltrim($base, '/') . $rewrite_base;
$iis_subdir_replacement = $subdomain_install ? '' : '{R:1}';
$web_config_file = '<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<system.webServer>
<rewrite>
<rules>
<rule name="WordPress Rule 1" stopProcessing="true">
<match url="^index\\.php$" ignoreCase="false" />
<action type="None" />
</rule>';
if (is_multisite() && get_site_option('ms_files_rewriting')) {
$web_config_file .= '
<rule name="WordPress 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="WordPress 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="WordPress 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="WordPress 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="WordPress Rule 5" stopProcessing="true">
<match url="^' . $iis_subdir_match . '([_0-9a-zA-Z-]+/)?(.*\\.php)$" ignoreCase="false" />
<action type="Rewrite" url="' . $iis_rewrite_base . '{R:2}" />
</rule>
<rule name="WordPress Rule 6" stopProcessing="true">
<match url="." ignoreCase="false" />
<action type="Rewrite" url="index.php" />
</rule>
</rules>
</rewrite>
</system.webServer>
</configuration>
';
echo '<li><p>';
printf(__('Add the following to your %1$s file in %2$s, <strong>replacing</strong> other WordPress 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($web_config_file);
?></textarea>
</li>
</ol>
<?php
} elseif ($is_nginx) {
echo '<li><p>';
printf(__('It seems your network is running with Nginx web server. <a href="%s">Learn more about further configuration</a>.'), __('https://wordpress.org/support/article/nginx/'));
echo '</p></li>';
} else {
$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";
}
$htaccess_file = <<<EOF
RewriteEngine On
RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
RewriteBase {$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}{$subdir_replacement_12} [L]
RewriteRule . index.php [L]
EOF;
echo '<li><p>';
printf(__('Add the following to your %1$s file in %2$s, <strong>replacing</strong> other WordPress 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
}
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
}
}