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   1  <?php
   2  /**
   3   * Network installation administration panel.
   4   *
   5   * A multi-step process allowing the user to enable a network of WordPress sites.
   6   *
   7   * @since 3.0.0
   8   *
   9   * @package WordPress
  10   * @subpackage Administration
  11   */
  12  
  13  /** WordPress Administration Bootstrap */
  14  require_once ( './admin.php' );
  15  
  16  if ( ! is_super_admin() )
  17      wp_die( __( 'You do not have sufficient permissions to manage options for this site.' ) );
  18  
  19  if ( is_multisite() && ! defined( 'MULTISITE' ) )
  20      wp_die( __('The Network creation panel is not for WordPress MU networks.') );
  21  
  22  // We need to create references to ms global tables to enable Network.
  23  foreach ( $wpdb->tables( 'ms_global' ) as $table => $prefixed_table )
  24      $wpdb->$table = $prefixed_table;
  25  
  26  /**
  27   * Check for an existing network.
  28   *
  29   * @since 3.0.0
  30   * @return Whether a network exists.
  31   */
  32  function network_domain_check() {
  33      global $wpdb;
  34      if ( $wpdb->get_var( "SHOW TABLES LIKE '$wpdb->site'" ) )
  35          return $wpdb->get_var( "SELECT domain FROM $wpdb->site ORDER BY id ASC LIMIT 1" );
  36      return false;
  37  }
  38  
  39  /**
  40   * Allow subdomain install
  41   *
  42   * @since 3.0.0
  43   * @return bool - whether subdomain install is allowed
  44   */
  45  function allow_subdomain_install() {
  46      $domain = preg_replace( '|https?://[^/]|', '', get_option( 'siteurl' ) );
  47      if( false !== strpos( $domain, '/' ) || 'localhost' == $_SERVER[ 'HTTP_HOST' ] )
  48          return false;
  49  
  50      return true;
  51  }
  52  /**
  53   * Get base domain of network.
  54   *
  55   * @since 3.0.0
  56   * @return string Base domain.
  57   */
  58  function get_clean_basedomain() {
  59      if ( $existing_domain = network_domain_check() )
  60          return $existing_domain;
  61      $domain = preg_replace( '|https?://|', '', get_option( 'siteurl' ) );
  62      if ( $slash = strpos( $domain, '/' ) )
  63          $domain = substr( $domain, 0, $slash );
  64      return $domain;
  65  }
  66  
  67  if ( ! network_domain_check() && ( ! defined( 'WP_ALLOW_MULTISITE' ) || ! WP_ALLOW_MULTISITE ) )
  68      wp_die( __( 'You must define the <code>WP_ALLOW_MULTISITE</code> constant as true in your wp-config.php file to allow creation of a Network.' ) );
  69  
  70  $title = __( 'Create a Network of WordPress Sites' );
  71  $parent_file = 'tools.php';
  72  
  73  // @todo: Documentation?
  74  // add_contextual_help( $current_screen, ... );
  75  
  76  include ( './admin-header.php' );
  77  ?>
  78  <div class="wrap">
  79  <?php screen_icon(); ?>
  80  <h2><?php echo esc_html( $title ); ?></h2>
  81  
  82  <form method="post">
  83  <?php
  84  /**
  85   * Prints step 1 for Network installation process.
  86   *
  87   * @todo Realistically, step 1 should be a welcome screen explaining what a Network is and such. Navigating to Tools > Network
  88   *     should not be a sudden "Welcome to a new install process! Fill this out and click here." See also contextual help todo.
  89   *
  90   * @since 3.0.0
  91   */
  92  function network_step1( $errors = false ) {
  93  
  94      if ( get_option( 'siteurl' ) != get_option( 'home' ) ) {
  95          echo '<div class="error"><p><strong>' . __('Error:') . '</strong> ' . sprintf( __( 'Your <strong>WordPress address</strong> must match your <strong>Site address</strong> before creating a Network. See <a href="%s">General Settings</a>.' ), esc_url( admin_url( 'options-general.php' ) ) ) . '</strong></p></div>';
  96          include  ('./admin-footer.php' );
  97          die();
  98      }
  99  
 100      $active_plugins = get_option( 'active_plugins' );
 101      if ( ! empty( $active_plugins ) ) {
 102          echo '<div class="updated"><p><strong>' . __('Warning:') . '</strong> ' . sprintf( __( 'Please <a href="%s">deactivate</a> your plugins before enabling the Network feature.' ), admin_url( 'plugins.php' ) ) . '</p></div><p>' . __(' Once the network is created, you may reactivate your plugins.' ) . '</p>';
 103          include ( './admin-footer.php' );
 104          die();
 105      }
 106  
 107      $hostname = get_clean_basedomain();
 108      $has_ports = strstr( $hostname, ':' );
 109      if ( ( false !== $has_ports && ! in_array( $has_ports, array( ':80', ':443' ) ) )
 110          || ( $no_ip = preg_match( '|[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+|', $hostname ) ) ) {
 111          echo '<div class="error"><p><strong>' . __( 'Error:') . '</strong> ' . __( 'You cannot install a network of sites with your server address.' ) . '</strong></p></div>';
 112          if ( $no_ip )
 113              echo '<p>' . __('You cannot use an IP address such as <code>127.0.0.1</code>.' ) . '</p>';
 114          else
 115              echo '<p>' . sprintf( __('You cannot use port numbers such as <code>%s</code>.' ), $has_ports ) . '</p>';
 116          echo '<a href="' . esc_url( admin_url() ) . '">' . __( 'Return to Dashboard' ) . '</a>';
 117          include ( './admin-footer.php' );
 118          die();
 119      }
 120  
 121      wp_nonce_field( 'install-network-1' );
 122  
 123      $error_codes = array();
 124      if ( is_wp_error( $errors ) ) {
 125          echo '<div class="error"><p><strong>' . __( 'ERROR: The network could not be created.' ) . '</strong></p>';
 126          foreach ( $errors->get_error_messages() as $error )
 127              echo "<p>$error</p>";
 128          echo '</div>';
 129          $error_codes = $errors->get_error_codes();
 130      }
 131  
 132      $site_name = ( ! empty( $_POST['sitename'] ) && ! in_array( 'empty_sitename', $error_codes ) ) ? $_POST['sitename'] : sprintf( _x('%s Sites', 'Default network name' ), get_option( 'blogname' ) );
 133      $admin_email = ( ! empty( $_POST['email'] ) && ! in_array( 'invalid_email', $error_codes ) ) ? $_POST['email'] : get_option( 'admin_email' );
 134      ?>
 135      <p><?php _e( 'Welcome to the Network installation process!' ); ?></p>
 136      <p><?php _e( "Fill in the information below and you'll be on your way to creating a network of WordPress sites. We'll create configuration files in the next step." ); ?></p>
 137      <?php
 138  
 139      // @todo IIS and ! $is_apache
 140      if ( isset( $_POST['subdomain_install'] ) ) {
 141          $subdomain_install = (bool) $_POST['subdomain_install'];
 142      } elseif ( apache_mod_loaded('mod_rewrite') ) { // assume nothing
 143          $subdomain_install = true;
 144      } else {
 145          $subdomain_install = false;
 146          if ( got_mod_rewrite() ) // dangerous assumptions
 147              echo '<div class="updated inline"><p><strong>' . __( 'Note:' ) . '</strong> ' . __( 'Please make sure the Apache <code>mod_rewrite</code> module is installed as it will be used at the end of this install.' ) . '</p>';
 148          else
 149              echo '<div class="error inline"><p><strong>' . __( 'Warning!' ) . '</strong> ' . __( 'It looks like the Apache <code>mod_rewrite</code> module is not installed.' ) . '</p>';
 150          echo '<p>' . __( 'If <code>mod_rewrite</code> is disabled, ask your administrator to enable that module, or look at the <a href="http://httpd.apache.org/docs/mod/mod_rewrite.html">Apache documentation</a> or <a href="http://www.google.com/search?q=apache+mod_rewrite">elsewhere</a> for help setting it up.' ) . '</p></div>';
 151      }
 152  
 153      if ( allow_subdomain_install() ) : ?>
 154          <h3><?php esc_html_e( 'Addresses of Sites in your Network' ); ?></h3>
 155          <p><?php _e( 'Please choose whether you would like sites in your WordPress network to use sub-domains or sub-directories. <strong>You cannot change this later.</strong>' ); ?></p>
 156          <p><?php _e( "You will need a wildcard DNS record if you're going to use the virtual host (sub-domain) functionality." ); ?></p>
 157          <?php // @todo: Link to an MS readme? ?>
 158          <table class="form-table">
 159              <tr>
 160                  <th><label><input type='radio' name='subdomain_install' value='1'<?php checked( $subdomain_install ); ?> /> Sub-domains</label></th>
 161                  <td><?php printf( _x( 'like <code>site1.%1$s</code> and <code>site2.%1$s</code>', 'subdomain examples' ), $hostname ); ?></td>
 162              </tr>
 163              <tr>
 164                  <th><label><input type='radio' name='subdomain_install' value='0'<?php checked( ! $subdomain_install ); ?> /> Sub-directories</label></th>
 165                  <td><?php printf( _x( 'like <code>%1$s/site1</code> and <code>%1$s/site2</code>', 'subdirectory examples' ), $hostname ); ?></td>
 166              </tr>
 167          </table>
 168  
 169  <?php
 170      endif;
 171  
 172          $is_www = ( 0 === strpos( $hostname, 'www.' ) );
 173          if ( $is_www ) :
 174          ?>
 175          <h3><?php esc_html_e( 'Server Address' ); ?></h3>
 176          <p><?php printf( __( 'We recommend you change your siteurl to <code>%1$s</code> before enabling the network feature. It will still be possible to visit your site using the "www" prefix with an address like <code>%2$s</code> but any links will not have the "www" prefix.' ), substr( $hostname, 4 ), $hostname ); ?></h3>
 177          <table class="form-table">
 178              <tr>
 179                  <th scope='row'><?php esc_html_e( 'Server Address' ); ?></th>
 180                  <td>
 181                      <?php printf( __( 'The Internet address of your network will be <code>%s</code>.' ), $hostname ); ?>
 182                  </td>
 183              </tr>
 184          </table>
 185          <?php endif; ?>
 186  
 187          <h3><?php esc_html_e( 'Network Details' ); ?></h3>
 188          <table class="form-table">
 189          <?php if ( 'localhost' == $hostname ) : ?>
 190              <tr>
 191                  <th scope="row"><?php esc_html_e( 'Sub-directory Install' ); ?></th>
 192                  <td><?php _e('Because you are using <code>localhost</code>, the sites in your WordPress network must use sub-directories. Consider using <code>localhost.localdomain</code> if you wish to use sub-domains.'); ?></td>
 193              </tr>
 194          <?php elseif ( !allow_subdomain_install() ) : ?>
 195              <tr>
 196                  <th scope="row"><?php esc_html_e( 'Sub-directory Install' ); ?></th>
 197                  <td><?php _e('Because your install is in a directory, the sites in your WordPress network must use sub-directories.'); ?></td>
 198              </tr>
 199          <?php endif; ?>
 200          <?php if ( ! $is_www ) : ?>
 201              <tr>
 202                  <th scope='row'><?php esc_html_e( 'Server Address' ); ?></th>
 203                  <td>
 204                      <?php printf( __( 'The Internet address of your network will be <code>%s</code>.' ), $hostname ); ?>
 205                  </td>
 206              </tr>
 207          <?php endif; ?>
 208              <tr>
 209                  <th scope='row'><?php esc_html_e( 'Network Title' ); ?></th>
 210                  <td>
 211                      <input name='sitename' type='text' size='45' value='<?php echo esc_attr( $site_name ); ?>' />
 212                      <br /><?php _e( 'What would you like to call your network?' ); ?>
 213                  </td>
 214              </tr>
 215              <tr>
 216                  <th scope='row'><?php esc_html_e( 'Admin E-mail Address' ); ?></th>
 217                  <td>
 218                      <input name='email' type='text' size='45' value='<?php echo esc_attr( $admin_email ); ?>' />
 219                      <br /><?php _e( 'Your email address.' ); ?>
 220                  </td>
 221              </tr>
 222          </table>
 223          <p class='submit'><input class="button-primary" name='submit' type='submit' value='<?php esc_attr_e( 'Install' ); ?>' /></p>
 224          <?php
 225  }
 226  
 227  /**
 228   * Prints step 2 for Network installation process.
 229   *
 230   * @since 3.0.0
 231   */
 232  function network_step2( $errors = false ) {
 233      global $base, $wpdb;
 234      $hostname = get_clean_basedomain();
 235  
 236      // Wildcard DNS message.
 237      if ( is_wp_error( $errors ) )
 238          echo '<div class="error">' . $errors->get_error_message() . '</div>';
 239  
 240      if ( $_POST ) {
 241          $vhost = !allow_subdomain_install() ? false : (bool) $_POST['subdomain_install'];
 242      } else {
 243          if ( is_multisite() ) {
 244              $vhost = is_subdomain_install();
 245  ?>
 246      <div class="updated"><p><strong><?php _e( 'Notice: The Network feature is already enabled.' ); ?></strong> <?php _e( 'The original configuration steps are shown here for reference.' ); ?></p></div>
 247  <?php    } else {
 248              $vhost = (bool) $wpdb->get_var( "SELECT meta_value FROM $wpdb->sitemeta WHERE site_id = 1 AND meta_key = 'subdomain_install'" );
 249  ?>
 250      <div class="error"><p><strong><?php _e('Warning:'); ?></strong> <?php _e( 'An existing WordPress network was detected.' ); ?></p></div>
 251      <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>
 252  <?php
 253          }
 254      }
 255  
 256      if ( $_POST || ! is_multisite() ) {
 257  ?>
 258          <h3><?php esc_html_e( 'Enabling the Network' ); ?></h3>
 259          <p><?php _e( 'Complete the following steps to enable the features for creating a network of sites.' ); ?></p>
 260          <div class="updated inline"><p><?php _e( '<strong>Caution:</strong> We recommend you backup your existing <code>wp-config.php</code> and <code>.htaccess</code> files.' ); ?></p></div>
 261  <?php
 262      }
 263  ?>
 264          <ol>
 265              <li><p><?php printf( __( 'Create a <code>blogs.dir</code> directory in <code>%s</code>. This directory is used to stored uploaded media for your additional sites and must be writeable by the web server.' ), WP_CONTENT_DIR ); ?></p></li>
 266              <li><p><?php printf( __( 'Add the following to your <code>wp-config.php</code> file in <code>%s</code>:' ), ABSPATH ); ?></p>
 267                  <textarea class="code" readonly="readonly" cols="100" rows="7">
 268  define( 'MULTISITE', true );
 269  define( 'VHOST', '<?php echo $vhost ? 'yes' : 'no'; ?>' );
 270  $base = '<?php echo $base; ?>';
 271  define( 'DOMAIN_CURRENT_SITE', '<?php echo $hostname; ?>' );
 272  define( 'PATH_CURRENT_SITE', '<?php echo $base; ?>' );
 273  define( 'SITE_ID_CURRENT_SITE', 1 );
 274  define( 'BLOG_ID_CURRENT_SITE', 1 );</textarea>
 275  <?php
 276      $keys_salts = array( 'AUTH_KEY' => '', 'SECURE_AUTH_KEY' => '', 'LOGGED_IN_KEY' => '', 'NONCE_KEY' => '', 'AUTH_SALT' => '', 'SECURE_AUTH_SALT' => '', 'LOGGED_IN_SALT' => '', 'NONCE_SALT' => '' );
 277      foreach ( $keys_salts as $c => $v ) {
 278          if ( defined( $c ) )
 279              unset( $keys_salts[ $c ] );
 280      }
 281      if ( ! empty( $keys_salts ) ) {
 282          $from_api = wp_remote_get( 'https://api.wordpress.org/secret-key/1.1/salt/' );
 283          if ( is_wp_error( $from_api ) ) {
 284              foreach ( $keys_salts as $c => $v ) {
 285                  $keys_salts[ $c ] = wp_generate_password( 64, true, true );
 286              }
 287          } else {
 288              $from_api = explode( "\n", wp_remote_retrieve_body( $from_api ) );
 289              foreach ( $keys_salts as $c => $v ) {
 290                  $keys_salts[ $c ] = substr( array_shift( $from_api ), 28, 64 );
 291              }
 292          }
 293          $num_keys_salts = count( $keys_salts );
 294  ?>
 295      <p><?php
 296          echo _n( 'This unique authentication key is also missing from your <code>wp-config.php</code> file.', 'These unique authentication keys are also missing from your <code>wp-config.php</code> file.', $num_keys_salts ); ?> <?php _e( 'To make your installation more secure, you should also add:' ) ?></p>
 297      <textarea class="code" readonly="readonly" cols="100" rows="<?php echo $num_keys_salts; ?>"><?php
 298      foreach ( $keys_salts as $c => $v ) {
 299          echo "\ndefine( '$c', '$v' );";
 300      }
 301  ?></textarea>
 302  <?php
 303      }
 304  ?>
 305  </li>
 306  <?php
 307  // Construct an htaccess file.
 308  $htaccess_file = 'RewriteEngine On
 309  RewriteBase ' . $base . '
 310  RewriteRule ^index\.php$ - [L]
 311  
 312  # uploaded files
 313  RewriteRule ^' . ( $vhost ? '' : '([_0-9a-zA-Z-]+/)?' ) . 'files/(.+) wp-includes/ms-files.php?file=$' . ( $vhost ? 1 : 2 ) . ' [L]' . "\n";
 314  
 315  if ( ! $vhost )
 316      $htaccess_file .= "\n# add a trailing slash to /wp-admin\n" . 'RewriteRule ^([_0-9a-zA-Z-]+/)?wp-admin$ $1wp-admin/ [R=301,L]' . "\n";
 317  
 318  $htaccess_file .= "\n" . 'RewriteCond %{REQUEST_FILENAME} -f [OR]
 319  RewriteCond %{REQUEST_FILENAME} -d
 320  RewriteRule ^ - [L]';
 321  
 322  // @todo custom content dir.
 323  if ( ! $vhost )
 324      $htaccess_file .= "\n" . 'RewriteRule  ^([_0-9a-zA-Z-]+/)?(wp-(content|admin|includes).*) $2 [L]
 325  RewriteRule  ^([_0-9a-zA-Z-]+/)?(.*\.php)$ $2 [L]';
 326  
 327  $htaccess_file .= "\nRewriteRule . index.php [L]";
 328  
 329  ?>
 330              <li><p><?php printf( __( 'Add the following to your <code>.htaccess</code> file in <code>%s</code>, replacing other WordPress rules:' ), ABSPATH ); ?></p>
 331                  <textarea class="code" readonly="readonly" cols="100" rows="<?php echo $vhost ? 11 : 16; ?>">
 332  <?php echo wp_htmledit_pre( $htaccess_file ); ?>
 333  </textarea></li>
 334          </ol>
 335  <?php if ( !is_multisite() ) { ?>
 336          <p><?php printf( __( 'Once you complete these steps, your network is enabled and configured.') ); ?> <a href="<?php echo esc_url( admin_url() ); ?>"><?php _e( 'Return to Dashboard' ); ?></a></p>
 337  <?php
 338      }
 339  }
 340  
 341  $base = trailingslashit( stripslashes( dirname( dirname( $_SERVER['SCRIPT_NAME'] ) ) ) );
 342  
 343  if ( $_POST ) {
 344      check_admin_referer( 'install-network-1' );
 345  
 346      require_once ( ABSPATH . 'wp-admin/includes/upgrade.php' );
 347      // create network tables
 348      install_network();
 349      $hostname = get_clean_basedomain();
 350      $subdomain_install = !allow_subdomain_install() ? false : (bool) $_POST['subdomain_install'];
 351      if ( ! network_domain_check() ) {
 352          $result = populate_network( 1, get_clean_basedomain(), sanitize_email( $_POST['email'] ), $_POST['sitename'], $base, $subdomain_install );
 353          if ( is_wp_error( $result ) ) {
 354              if ( 1 == count( $result->get_error_codes() ) && 'no_wildcard_dns' == $result->get_error_code() )
 355                  network_step2( $result );
 356              else
 357                  network_step1( $result );
 358          } else {
 359              network_step2();
 360          }
 361      } else {
 362          network_step2();
 363      }
 364  } elseif ( is_multisite() || network_domain_check() ) {
 365      network_step2();
 366  } else {
 367      network_step1();
 368  }
 369  ?>
 370  </form>
 371  </div>
 372  
 373  <?php include ( './admin-footer.php' ); ?>