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/wp-admin/includes/ -> user.php (source)

   1  <?php
   2  /**
   3   * WordPress user administration API.
   4   *
   5   * @package WordPress
   6   * @subpackage Administration
   7   */
   8  
   9  /**
  10   * Creates a new user from the "Users" form using $_POST information.
  11   *
  12   * It seems that the first half is for backwards compatibility, but only
  13   * has the ability to alter the user's role. WordPress core seems to
  14   * use this function only in the second way, running edit_user() with
  15   * no id so as to create a new user.
  16   *
  17   * @since 2.0
  18   *
  19   * @param int $user_id Optional. User ID.
  20   * @return null|WP_Error|int Null when adding user, WP_Error or User ID integer when no parameters.
  21   */
  22  function add_user() {
  23      if ( func_num_args() ) { // The hackiest hack that ever did hack
  24          global $wp_roles;
  25          $user_id = (int) func_get_arg( 0 );
  26  
  27          if ( isset( $_POST['role'] ) ) {
  28              $new_role = sanitize_text_field( $_POST['role'] );
  29              // Don't let anyone with 'edit_users' (admins) edit their own role to something without it.
  30              if ( $user_id != get_current_user_id() || $wp_roles->role_objects[$new_role]->has_cap( 'edit_users' ) ) {
  31                  // If the new role isn't editable by the logged-in user die with error
  32                  $editable_roles = get_editable_roles();
  33                  if ( empty( $editable_roles[$new_role] ) )
  34                      wp_die(__('You can&#8217;t give users that role.'));
  35  
  36                  $user = new WP_User( $user_id );
  37                  $user->set_role( $new_role );
  38              }
  39          }
  40      } else {
  41          add_action( 'user_register', 'add_user' ); // See above
  42          return edit_user();
  43      }
  44  }
  45  
  46  /**
  47   * Edit user settings based on contents of $_POST
  48   *
  49   * Used on user-edit.php and profile.php to manage and process user options, passwords etc.
  50   *
  51   * @since 2.0
  52   *
  53   * @param int $user_id Optional. User ID.
  54   * @return int user id of the updated user
  55   */
  56  function edit_user( $user_id = 0 ) {
  57      global $wp_roles, $wpdb;
  58      if ( $user_id != 0 ) {
  59          $update = true;
  60          $user->ID = (int) $user_id;
  61          $userdata = get_userdata( $user_id );
  62          $user->user_login = $wpdb->escape( $userdata->user_login );
  63      } else {
  64          $update = false;
  65          $user = '';
  66      }
  67  
  68      if ( !$update && isset( $_POST['user_login'] ) )
  69          $user->user_login = sanitize_user($_POST['user_login'], true);
  70  
  71      $pass1 = $pass2 = '';
  72      if ( isset( $_POST['pass1'] ))
  73          $pass1 = $_POST['pass1'];
  74      if ( isset( $_POST['pass2'] ))
  75          $pass2 = $_POST['pass2'];
  76  
  77      if ( isset( $_POST['role'] ) && current_user_can( 'edit_users' ) ) {
  78          $new_role = sanitize_text_field( $_POST['role'] );
  79          $potential_role = isset($wp_roles->role_objects[$new_role]) ? $wp_roles->role_objects[$new_role] : false;
  80          // Don't let anyone with 'edit_users' (admins) edit their own role to something without it.
  81          // Multisite super admins can freely edit their blog roles -- they possess all caps.
  82          if ( ( is_multisite() && current_user_can( 'manage_sites' ) ) || $user_id != get_current_user_id() || ($potential_role && $potential_role->has_cap( 'edit_users' ) ) )
  83              $user->role = $new_role;
  84  
  85          // If the new role isn't editable by the logged-in user die with error
  86          $editable_roles = get_editable_roles();
  87          if ( ! empty( $new_role ) && empty( $editable_roles[$new_role] ) )
  88              wp_die(__('You can&#8217;t give users that role.'));
  89      }
  90  
  91      if ( isset( $_POST['email'] ))
  92          $user->user_email = sanitize_text_field( $_POST['email'] );
  93      if ( isset( $_POST['url'] ) ) {
  94          if ( empty ( $_POST['url'] ) || $_POST['url'] == 'http://' ) {
  95              $user->user_url = '';
  96          } else {
  97              $user->user_url = esc_url_raw( $_POST['url'] );
  98              $user->user_url = preg_match('/^(https?|ftps?|mailto|news|irc|gopher|nntp|feed|telnet):/is', $user->user_url) ? $user->user_url : 'http://'.$user->user_url;
  99          }
 100      }
 101      if ( isset( $_POST['first_name'] ) )
 102          $user->first_name = sanitize_text_field( $_POST['first_name'] );
 103      if ( isset( $_POST['last_name'] ) )
 104          $user->last_name = sanitize_text_field( $_POST['last_name'] );
 105      if ( isset( $_POST['nickname'] ) )
 106          $user->nickname = sanitize_text_field( $_POST['nickname'] );
 107      if ( isset( $_POST['display_name'] ) )
 108          $user->display_name = sanitize_text_field( $_POST['display_name'] );
 109  
 110      if ( isset( $_POST['description'] ) )
 111          $user->description = trim( $_POST['description'] );
 112  
 113      foreach ( _wp_get_user_contactmethods() as $method => $name ) {
 114          if ( isset( $_POST[$method] ))
 115              $user->$method = sanitize_text_field( $_POST[$method] );
 116      }
 117  
 118      if ( $update ) {
 119          $user->rich_editing = isset( $_POST['rich_editing'] ) && 'false' == $_POST['rich_editing'] ? 'false' : 'true';
 120          $user->admin_color = isset( $_POST['admin_color'] ) ? sanitize_text_field( $_POST['admin_color'] ) : 'fresh';
 121      }
 122  
 123      $user->comment_shortcuts = isset( $_POST['comment_shortcuts'] ) && 'true' == $_POST['comment_shortcuts'] ? 'true' : '';
 124  
 125      $user->use_ssl = 0;
 126      if ( !empty($_POST['use_ssl']) )
 127          $user->use_ssl = 1;
 128  
 129      $errors = new WP_Error();
 130  
 131      /* checking that username has been typed */
 132      if ( $user->user_login == '' )
 133          $errors->add( 'user_login', __( '<strong>ERROR</strong>: Please enter a username.' ));
 134  
 135      /* checking the password has been typed twice */
 136      do_action_ref_array( 'check_passwords', array ( $user->user_login, & $pass1, & $pass2 ));
 137  
 138      if ( $update ) {
 139          if ( empty($pass1) && !empty($pass2) )
 140              $errors->add( 'pass', __( '<strong>ERROR</strong>: You entered your new password only once.' ), array( 'form-field' => 'pass1' ) );
 141          elseif ( !empty($pass1) && empty($pass2) )
 142              $errors->add( 'pass', __( '<strong>ERROR</strong>: You entered your new password only once.' ), array( 'form-field' => 'pass2' ) );
 143      } else {
 144          if ( empty($pass1) )
 145              $errors->add( 'pass', __( '<strong>ERROR</strong>: Please enter your password.' ), array( 'form-field' => 'pass1' ) );
 146          elseif ( empty($pass2) )
 147              $errors->add( 'pass', __( '<strong>ERROR</strong>: Please enter your password twice.' ), array( 'form-field' => 'pass2' ) );
 148      }
 149  
 150      /* Check for "\" in password */
 151      if ( false !== strpos( stripslashes($pass1), "\\" ) )
 152          $errors->add( 'pass', __( '<strong>ERROR</strong>: Passwords may not contain the character "\\".' ), array( 'form-field' => 'pass1' ) );
 153  
 154      /* checking the password has been typed twice the same */
 155      if ( $pass1 != $pass2 )
 156          $errors->add( 'pass', __( '<strong>ERROR</strong>: Please enter the same password in the two password fields.' ), array( 'form-field' => 'pass1' ) );
 157  
 158      if ( !empty( $pass1 ) )
 159          $user->user_pass = $pass1;
 160  
 161      if ( !$update && isset( $_POST['user_login'] ) && !validate_username( $_POST['user_login'] ) )
 162          $errors->add( 'user_login', __( '<strong>ERROR</strong>: This username is invalid because it uses illegal characters. Please enter a valid username.' ));
 163  
 164      if ( !$update && username_exists( $user->user_login ) )
 165          $errors->add( 'user_login', __( '<strong>ERROR</strong>: This username is already registered. Please choose another one.' ));
 166  
 167      /* checking e-mail address */
 168      if ( empty( $user->user_email ) ) {
 169          $errors->add( 'empty_email', __( '<strong>ERROR</strong>: Please enter an e-mail address.' ), array( 'form-field' => 'email' ) );
 170      } elseif ( !is_email( $user->user_email ) ) {
 171          $errors->add( 'invalid_email', __( '<strong>ERROR</strong>: The e-mail address isn&#8217;t correct.' ), array( 'form-field' => 'email' ) );
 172      } elseif ( ( $owner_id = email_exists($user->user_email) ) && $owner_id != $user->ID ) {
 173          $errors->add( 'email_exists', __('<strong>ERROR</strong>: This email is already registered, please choose another one.'), array( 'form-field' => 'email' ) );
 174      }
 175  
 176      // Allow plugins to return their own errors.
 177      do_action_ref_array('user_profile_update_errors', array ( &$errors, $update, &$user ) );
 178  
 179      if ( $errors->get_error_codes() )
 180          return $errors;
 181  
 182      if ( $update ) {
 183          $user_id = wp_update_user( get_object_vars( $user ) );
 184      } else {
 185          $user_id = wp_insert_user( get_object_vars( $user ) );
 186          wp_new_user_notification( $user_id, isset($_POST['send_password']) ? $pass1 : '' );
 187      }
 188      return $user_id;
 189  }
 190  
 191  /**
 192   * {@internal Missing Short Description}}
 193   *
 194   * {@internal Missing Long Description}}
 195   *
 196   * @since unknown
 197   *
 198   * @return array List of user IDs.
 199   */
 200  function get_author_user_ids() {
 201      global $wpdb;
 202      if ( !is_multisite() )
 203          $level_key = $wpdb->get_blog_prefix() . 'user_level';
 204      else
 205          $level_key = $wpdb->get_blog_prefix() . 'capabilities'; // wpmu site admins don't have user_levels
 206  
 207      return $wpdb->get_col( $wpdb->prepare("SELECT user_id FROM $wpdb->usermeta WHERE meta_key = %s AND meta_value != '0'", $level_key) );
 208  }
 209  
 210  /**
 211   * {@internal Missing Short Description}}
 212   *
 213   * {@internal Missing Long Description}}
 214   *
 215   * @since unknown
 216   *
 217   * @param int $user_id User ID.
 218   * @return array|bool List of editable authors. False if no editable users.
 219   */
 220  function get_editable_authors( $user_id ) {
 221      global $wpdb;
 222  
 223      $editable = get_editable_user_ids( $user_id );
 224  
 225      if ( !$editable ) {
 226          return false;
 227      } else {
 228          $editable = join(',', $editable);
 229          $authors = $wpdb->get_results( "SELECT * FROM $wpdb->users WHERE ID IN ($editable) ORDER BY display_name" );
 230      }
 231  
 232      return apply_filters('get_editable_authors', $authors);
 233  }
 234  
 235  /**
 236   * {@internal Missing Short Description}}
 237   *
 238   * {@internal Missing Long Description}}
 239   *
 240   * @since unknown
 241   *
 242   * @param int $user_id User ID.
 243   * @param bool $exclude_zeros Optional, default is true. Whether to exclude zeros.
 244   * @return unknown
 245   */
 246  function get_editable_user_ids( $user_id, $exclude_zeros = true, $post_type = 'post' ) {
 247      global $wpdb;
 248  
 249      $user = new WP_User( $user_id );
 250      $post_type_obj = get_post_type_object($post_type);
 251  
 252      if ( ! $user->has_cap($post_type_obj->cap->edit_others_posts) ) {
 253          if ( $user->has_cap($post_type_obj->cap->edit_posts) || ! $exclude_zeros )
 254              return array($user->id);
 255          else
 256              return array();
 257      }
 258  
 259      if ( !is_multisite() )
 260          $level_key = $wpdb->get_blog_prefix() . 'user_level';
 261      else
 262          $level_key = $wpdb->get_blog_prefix() . 'capabilities'; // wpmu site admins don't have user_levels
 263  
 264      $query = $wpdb->prepare("SELECT user_id FROM $wpdb->usermeta WHERE meta_key = %s", $level_key);
 265      if ( $exclude_zeros )
 266          $query .= " AND meta_value != '0'";
 267  
 268      return $wpdb->get_col( $query );
 269  }
 270  
 271  /**
 272   * Fetch a filtered list of user roles that the current user is
 273   * allowed to edit.
 274   *
 275   * Simple function who's main purpose is to allow filtering of the
 276   * list of roles in the $wp_roles object so that plugins can remove
 277   * innappropriate ones depending on the situation or user making edits.
 278   * Specifically because without filtering anyone with the edit_users
 279   * capability can edit others to be administrators, even if they are
 280   * only editors or authors. This filter allows admins to delegate
 281   * user management.
 282   *
 283   * @since 2.8
 284   *
 285   * @return unknown
 286   */
 287  function get_editable_roles() {
 288      global $wp_roles;
 289  
 290      $all_roles = $wp_roles->roles;
 291      $editable_roles = apply_filters('editable_roles', $all_roles);
 292  
 293      return $editable_roles;
 294  }
 295  
 296  /**
 297   * {@internal Missing Short Description}}
 298   *
 299   * {@internal Missing Long Description}}
 300   *
 301   * @since unknown
 302   *
 303   * @return unknown
 304   */
 305  function get_nonauthor_user_ids() {
 306      global $wpdb;
 307  
 308      if ( !is_multisite() )
 309          $level_key = $wpdb->get_blog_prefix() . 'user_level';
 310      else
 311          $level_key = $wpdb->get_blog_prefix() . 'capabilities'; // wpmu site admins don't have user_levels
 312  
 313      return $wpdb->get_col( $wpdb->prepare("SELECT user_id FROM $wpdb->usermeta WHERE meta_key = %s AND meta_value = '0'", $level_key) );
 314  }
 315  
 316  /**
 317   * Retrieve editable posts from other users.
 318   *
 319   * @since unknown
 320   *
 321   * @param int $user_id User ID to not retrieve posts from.
 322   * @param string $type Optional, defaults to 'any'. Post type to retrieve, can be 'draft' or 'pending'.
 323   * @return array List of posts from others.
 324   */
 325  function get_others_unpublished_posts($user_id, $type='any') {
 326      global $wpdb;
 327  
 328      $editable = get_editable_user_ids( $user_id );
 329  
 330      if ( in_array($type, array('draft', 'pending')) )
 331          $type_sql = " post_status = '$type' ";
 332      else
 333          $type_sql = " ( post_status = 'draft' OR post_status = 'pending' ) ";
 334  
 335      $dir = ( 'pending' == $type ) ? 'ASC' : 'DESC';
 336  
 337      if ( !$editable ) {
 338          $other_unpubs = '';
 339      } else {
 340          $editable = join(',', $editable);
 341          $other_unpubs = $wpdb->get_results( $wpdb->prepare("SELECT ID, post_title, post_author FROM $wpdb->posts WHERE post_type = 'post' AND $type_sql AND post_author IN ($editable) AND post_author != %d ORDER BY post_modified $dir", $user_id) );
 342      }
 343  
 344      return apply_filters('get_others_drafts', $other_unpubs);
 345  }
 346  
 347  /**
 348   * Retrieve drafts from other users.
 349   *
 350   * @since unknown
 351   *
 352   * @param int $user_id User ID.
 353   * @return array List of drafts from other users.
 354   */
 355  function get_others_drafts($user_id) {
 356      return get_others_unpublished_posts($user_id, 'draft');
 357  }
 358  
 359  /**
 360   * Retrieve pending review posts from other users.
 361   *
 362   * @since unknown
 363   *
 364   * @param int $user_id User ID.
 365   * @return array List of posts with pending review post type from other users.
 366   */
 367  function get_others_pending($user_id) {
 368      return get_others_unpublished_posts($user_id, 'pending');
 369  }
 370  
 371  /**
 372   * Retrieve user data and filter it.
 373   *
 374   * @since unknown
 375   *
 376   * @param int $user_id User ID.
 377   * @return object WP_User object with user data.
 378   */
 379  function get_user_to_edit( $user_id ) {
 380      $user = new WP_User( $user_id );
 381  
 382      $user_contactmethods = _wp_get_user_contactmethods();
 383      foreach ($user_contactmethods as $method => $name) {
 384          if ( empty( $user->{$method} ) )
 385              $user->{$method} = '';
 386      }
 387  
 388      if ( empty($user->description) )
 389          $user->description = '';
 390  
 391      $user = sanitize_user_object($user, 'edit');
 392  
 393      return $user;
 394  }
 395  
 396  /**
 397   * Retrieve the user's drafts.
 398   *
 399   * @since unknown
 400   *
 401   * @param int $user_id User ID.
 402   * @return array
 403   */
 404  function get_users_drafts( $user_id ) {
 405      global $wpdb;
 406      $query = $wpdb->prepare("SELECT ID, post_title FROM $wpdb->posts WHERE post_type = 'post' AND post_status = 'draft' AND post_author = %d ORDER BY post_modified DESC", $user_id);
 407      $query = apply_filters('get_users_drafts', $query);
 408      return $wpdb->get_results( $query );
 409  }
 410  
 411  /**
 412   * Remove user and optionally reassign posts and links to another user.
 413   *
 414   * If the $reassign parameter is not assigned to an User ID, then all posts will
 415   * be deleted of that user. The action 'delete_user' that is passed the User ID
 416   * being deleted will be run after the posts are either reassigned or deleted.
 417   * The user meta will also be deleted that are for that User ID.
 418   *
 419   * @since unknown
 420   *
 421   * @param int $id User ID.
 422   * @param int $reassign Optional. Reassign posts and links to new User ID.
 423   * @return bool True when finished.
 424   */
 425  function wp_delete_user( $id, $reassign = 'novalue' ) {
 426      global $wpdb;
 427  
 428      $id = (int) $id;
 429  
 430      // allow for transaction statement
 431      do_action('delete_user', $id);
 432  
 433      if ( 'novalue' === $reassign || null === $reassign ) {
 434          $post_ids = $wpdb->get_col( $wpdb->prepare("SELECT ID FROM $wpdb->posts WHERE post_author = %d", $id) );
 435  
 436          if ( $post_ids ) {
 437              foreach ( $post_ids as $post_id )
 438                  wp_delete_post($post_id);
 439          }
 440  
 441          // Clean links
 442          $link_ids = $wpdb->get_col( $wpdb->prepare("SELECT link_id FROM $wpdb->links WHERE link_owner = %d", $id) );
 443  
 444          if ( $link_ids ) {
 445              foreach ( $link_ids as $link_id )
 446                  wp_delete_link($link_id);
 447          }
 448      } else {
 449          $reassign = (int) $reassign;
 450          $wpdb->update( $wpdb->posts, array('post_author' => $reassign), array('post_author' => $id) );
 451          $wpdb->update( $wpdb->links, array('link_owner' => $reassign), array('link_owner' => $id) );
 452      }
 453  
 454      clean_user_cache($id);
 455  
 456      // FINALLY, delete user
 457      if ( !is_multisite() ) {
 458          $wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->usermeta WHERE user_id = %d", $id) );
 459          $wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->users WHERE ID = %d", $id) );
 460      } else {
 461          $level_key = $wpdb->get_blog_prefix() . 'capabilities'; // wpmu site admins don't have user_levels
 462          $wpdb->query("DELETE FROM $wpdb->usermeta WHERE user_id = $id AND meta_key = '{$level_key}'");
 463      }
 464  
 465      // allow for commit transaction
 466      do_action('deleted_user', $id);
 467  
 468      return true;
 469  }
 470  
 471  /**
 472   * Remove all capabilities from user.
 473   *
 474   * @since unknown
 475   *
 476   * @param int $id User ID.
 477   */
 478  function wp_revoke_user($id) {
 479      $id = (int) $id;
 480  
 481      $user = new WP_User($id);
 482      $user->remove_all_caps();
 483  }
 484  
 485  if ( !class_exists('WP_User_Search') ) :
 486  /**
 487   * WordPress User Search class.
 488   *
 489   * @since unknown
 490   */
 491  class WP_User_Search {
 492  
 493      /**
 494       * {@internal Missing Description}}
 495       *
 496       * @since unknown
 497       * @access private
 498       * @var unknown_type
 499       */
 500      var $results;
 501  
 502      /**
 503       * {@internal Missing Description}}
 504       *
 505       * @since unknown
 506       * @access private
 507       * @var unknown_type
 508       */
 509      var $search_term;
 510  
 511      /**
 512       * Page number.
 513       *
 514       * @since unknown
 515       * @access private
 516       * @var int
 517       */
 518      var $page;
 519  
 520      /**
 521       * Role name that users have.
 522       *
 523       * @since unknown
 524       * @access private
 525       * @var string
 526       */
 527      var $role;
 528  
 529      /**
 530       * Raw page number.
 531       *
 532       * @since unknown
 533       * @access private
 534       * @var int|bool
 535       */
 536      var $raw_page;
 537  
 538      /**
 539       * Amount of users to display per page.
 540       *
 541       * @since unknown
 542       * @access public
 543       * @var int
 544       */
 545      var $users_per_page = 50;
 546  
 547      /**
 548       * {@internal Missing Description}}
 549       *
 550       * @since unknown
 551       * @access private
 552       * @var unknown_type
 553       */
 554      var $first_user;
 555  
 556      /**
 557       * {@internal Missing Description}}
 558       *
 559       * @since unknown
 560       * @access private
 561       * @var int
 562       */
 563      var $last_user;
 564  
 565      /**
 566       * {@internal Missing Description}}
 567       *
 568       * @since unknown
 569       * @access private
 570       * @var string
 571       */
 572      var $query_limit;
 573  
 574      /**
 575       * {@internal Missing Description}}
 576       *
 577       * @since 3.0.0
 578       * @access private
 579       * @var string
 580       */
 581      var $query_orderby;
 582  
 583      /**
 584       * {@internal Missing Description}}
 585       *
 586       * @since 3.0.0
 587       * @access private
 588       * @var string
 589       */
 590      var $query_from;
 591  
 592      /**
 593       * {@internal Missing Description}}
 594       *
 595       * @since 3.0.0
 596       * @access private
 597       * @var string
 598       */
 599      var $query_where;
 600  
 601      /**
 602       * {@internal Missing Description}}
 603       *
 604       * @since unknown
 605       * @access private
 606       * @var int
 607       */
 608      var $total_users_for_query = 0;
 609  
 610      /**
 611       * {@internal Missing Description}}
 612       *
 613       * @since unknown
 614       * @access private
 615       * @var bool
 616       */
 617      var $too_many_total_users = false;
 618  
 619      /**
 620       * {@internal Missing Description}}
 621       *
 622       * @since unknown
 623       * @access private
 624       * @var unknown_type
 625       */
 626      var $search_errors;
 627  
 628      /**
 629       * {@internal Missing Description}}
 630       *
 631       * @since unknown
 632       * @access private
 633       * @var unknown_type
 634       */
 635      var $paging_text;
 636  
 637      /**
 638       * PHP4 Constructor - Sets up the object properties.
 639       *
 640       * @since unknown
 641       *
 642       * @param string $search_term Search terms string.
 643       * @param int $page Optional. Page ID.
 644       * @param string $role Role name.
 645       * @return WP_User_Search
 646       */
 647  	function WP_User_Search ($search_term = '', $page = '', $role = '') {
 648          $this->search_term = $search_term;
 649          $this->raw_page = ( '' == $page ) ? false : (int) $page;
 650          $this->page = (int) ( '' == $page ) ? 1 : $page;
 651          $this->role = $role;
 652  
 653          $this->prepare_query();
 654          $this->query();
 655          $this->prepare_vars_for_template_usage();
 656          $this->do_paging();
 657      }
 658  
 659      /**
 660       * {@internal Missing Short Description}}
 661       *
 662       * {@internal Missing Long Description}}
 663       *
 664       * @since unknown
 665       * @access public
 666       */
 667  	function prepare_query() {
 668          global $wpdb;
 669          $this->first_user = ($this->page - 1) * $this->users_per_page;
 670  
 671          $this->query_limit = $wpdb->prepare(" LIMIT %d, %d", $this->first_user, $this->users_per_page);
 672          $this->query_orderby = ' ORDER BY user_login';
 673  
 674          $search_sql = '';
 675          if ( $this->search_term ) {
 676              $searches = array();
 677              $search_sql = 'AND (';
 678              foreach ( array('user_login', 'user_nicename', 'user_email', 'user_url', 'display_name') as $col )
 679                  $searches[] = $col . " LIKE '%$this->search_term%'";
 680              $search_sql .= implode(' OR ', $searches);
 681              $search_sql .= ')';
 682          }
 683  
 684          $this->query_from = " FROM $wpdb->users";
 685          $this->query_where = " WHERE 1=1 $search_sql";
 686  
 687          if ( $this->role ) {
 688              $this->query_from .= " INNER JOIN $wpdb->usermeta ON $wpdb->users.ID = $wpdb->usermeta.user_id";
 689              $this->query_where .= $wpdb->prepare(" AND $wpdb->usermeta.meta_key = '{$wpdb->prefix}capabilities' AND $wpdb->usermeta.meta_value LIKE %s", '%' . $this->role . '%');
 690          } elseif ( is_multisite() ) {
 691              $level_key = $wpdb->prefix . 'capabilities'; // wpmu site admins don't have user_levels
 692              $this->query_from .= ", $wpdb->usermeta";
 693              $this->query_where .= " AND $wpdb->users.ID = $wpdb->usermeta.user_id AND meta_key = '{$level_key}'";
 694          }
 695  
 696          do_action_ref_array( 'pre_user_search', array( &$this ) );
 697      }
 698  
 699      /**
 700       * {@internal Missing Short Description}}
 701       *
 702       * {@internal Missing Long Description}}
 703       *
 704       * @since unknown
 705       * @access public
 706       */
 707  	function query() {
 708          global $wpdb;
 709  
 710          $this->results = $wpdb->get_col("SELECT DISTINCT($wpdb->users.ID)" . $this->query_from . $this->query_where . $this->query_orderby . $this->query_limit);
 711  
 712          if ( $this->results )
 713              $this->total_users_for_query = $wpdb->get_var("SELECT COUNT(DISTINCT($wpdb->users.ID))" . $this->query_from . $this->query_where); // no limit
 714          else
 715              $this->search_errors = new WP_Error('no_matching_users_found', __('No matching users were found!'));
 716      }
 717  
 718      /**
 719       * {@internal Missing Short Description}}
 720       *
 721       * {@internal Missing Long Description}}
 722       *
 723       * @since unknown
 724       * @access public
 725       */
 726  	function prepare_vars_for_template_usage() {
 727          $this->search_term = stripslashes($this->search_term); // done with DB, from now on we want slashes gone
 728      }
 729  
 730      /**
 731       * {@internal Missing Short Description}}
 732       *
 733       * {@internal Missing Long Description}}
 734       *
 735       * @since unknown
 736       * @access public
 737       */
 738  	function do_paging() {
 739          if ( $this->total_users_for_query > $this->users_per_page ) { // have to page the results
 740              $args = array();
 741              if( ! empty($this->search_term) )
 742                  $args['usersearch'] = urlencode($this->search_term);
 743              if( ! empty($this->role) )
 744                  $args['role'] = urlencode($this->role);
 745  
 746              $this->paging_text = paginate_links( array(
 747                  'total' => ceil($this->total_users_for_query / $this->users_per_page),
 748                  'current' => $this->page,
 749                  'base' => 'users.php?%_%',
 750                  'format' => 'userspage=%#%',
 751                  'add_args' => $args
 752              ) );
 753              if ( $this->paging_text ) {
 754                  $this->paging_text = sprintf( '<span class="displaying-num">' . __( 'Displaying %s&#8211;%s of %s' ) . '</span>%s',
 755                      number_format_i18n( ( $this->page - 1 ) * $this->users_per_page + 1 ),
 756                      number_format_i18n( min( $this->page * $this->users_per_page, $this->total_users_for_query ) ),
 757                      number_format_i18n( $this->total_users_for_query ),
 758                      $this->paging_text
 759                  );
 760              }
 761          }
 762      }
 763  
 764      /**
 765       * {@internal Missing Short Description}}
 766       *
 767       * {@internal Missing Long Description}}
 768       *
 769       * @since unknown
 770       * @access public
 771       *
 772       * @return unknown
 773       */
 774  	function get_results() {
 775          return (array) $this->results;
 776      }
 777  
 778      /**
 779       * Displaying paging text.
 780       *
 781       * @see do_paging() Builds paging text.
 782       *
 783       * @since unknown
 784       * @access public
 785       */
 786  	function page_links() {
 787          echo $this->paging_text;
 788      }
 789  
 790      /**
 791       * Whether paging is enabled.
 792       *
 793       * @see do_paging() Builds paging text.
 794       *
 795       * @since unknown
 796       * @access public
 797       *
 798       * @return bool
 799       */
 800  	function results_are_paged() {
 801          if ( $this->paging_text )
 802              return true;
 803          return false;
 804      }
 805  
 806      /**
 807       * Whether there are search terms.
 808       *
 809       * @since unknown
 810       * @access public
 811       *
 812       * @return bool
 813       */
 814  	function is_search() {
 815          if ( $this->search_term )
 816              return true;
 817          return false;
 818      }
 819  }
 820  endif;
 821  
 822  add_action('admin_init', 'default_password_nag_handler');
 823  function default_password_nag_handler($errors = false) {
 824      global $user_ID;
 825      if ( ! get_user_option('default_password_nag') ) //Short circuit it.
 826          return;
 827  
 828      //get_user_setting = JS saved UI setting. else no-js-falback code.
 829      if ( 'hide' == get_user_setting('default_password_nag') || isset($_GET['default_password_nag']) && '0' == $_GET['default_password_nag'] ) {
 830          delete_user_setting('default_password_nag');
 831          update_user_option($user_ID, 'default_password_nag', false, true);
 832      }
 833  }
 834  
 835  add_action('profile_update', 'default_password_nag_edit_user', 10, 2);
 836  function default_password_nag_edit_user($user_ID, $old_data) {
 837      if ( ! get_user_option('default_password_nag', $user_ID) ) //Short circuit it.
 838          return;
 839  
 840      $new_data = get_userdata($user_ID);
 841  
 842      if ( $new_data->user_pass != $old_data->user_pass ) { //Remove the nag if the password has been changed.
 843          delete_user_setting('default_password_nag', $user_ID);
 844          update_user_option($user_ID, 'default_password_nag', false, true);
 845      }
 846  }
 847  
 848  add_action('admin_notices', 'default_password_nag');
 849  function default_password_nag() {
 850      if ( ! get_user_option('default_password_nag') ) //Short circuit it.
 851          return;
 852  
 853      echo '<div class="error default-password-nag">';
 854      echo '<p>';
 855      echo '<strong>' . __('Notice:') . '</strong> ';
 856      _e('You&rsquo;re using the auto-generated password for your account. Would you like to change it to something you&rsquo;ll remember easier?');
 857      echo '</p><p>';
 858      printf( '<a href="%s">' . __('Yes, take me to my profile page') . '</a> | ', admin_url('profile.php') . '#password' );
 859      printf( '<a href="%s" id="default-password-nag-no">' . __('No thanks, do not remind me again') . '</a>', '?default_password_nag=0' );
 860      echo '</p></div>';
 861  }
 862  
 863  ?>


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