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   1  <?php
   2  /**
   3   * Handles Comment Post to WordPress and prevents duplicate comment posting.
   4   *
   5   * @package WordPress
   6   */
   7  
   8  if ( 'POST' != $_SERVER['REQUEST_METHOD'] ) {
   9      header('Allow: POST');
  10      header('HTTP/1.1 405 Method Not Allowed');
  11      header('Content-Type: text/plain');
  12      exit;
  13  }
  14  
  15  /** Sets up the WordPress Environment. */
  16  require( dirname(__FILE__) . '/wp-load.php' );
  17  
  18  nocache_headers();
  19  
  20  $comment_post_ID = isset($_POST['comment_post_ID']) ? (int) $_POST['comment_post_ID'] : 0;
  21  
  22  $status = $wpdb->get_row( $wpdb->prepare("SELECT post_status, comment_status FROM $wpdb->posts WHERE ID = %d", $comment_post_ID) );
  23  
  24  if ( empty($status->comment_status) ) {
  25      do_action('comment_id_not_found', $comment_post_ID);
  26      exit;
  27  }
  28  
  29  $status_obj = get_post_status_object($status->post_status);
  30  
  31  if ( !comments_open($comment_post_ID) ) {
  32      do_action('comment_closed', $comment_post_ID);
  33      wp_die( __('Sorry, comments are closed for this item.') );
  34  } elseif ( 'trash' == $status->post_status ) {
  35      do_action('comment_on_trash', $comment_post_ID);
  36      exit;
  37  } elseif ( !$status_obj->public ) {
  38      do_action('comment_on_draft', $comment_post_ID);
  39      exit;
  40  } elseif ( post_password_required($comment_post_ID) ) {
  41      do_action('comment_on_password_protected', $comment_post_ID);
  42      exit;
  43  } else {
  44      do_action('pre_comment_on_post', $comment_post_ID);
  45  }
  46  
  47  $comment_author       = ( isset($_POST['author']) )  ? trim(strip_tags($_POST['author'])) : null;
  48  $comment_author_email = ( isset($_POST['email']) )   ? trim($_POST['email']) : null;
  49  $comment_author_url   = ( isset($_POST['url']) )     ? trim($_POST['url']) : null;
  50  $comment_content      = ( isset($_POST['comment']) ) ? trim($_POST['comment']) : null;
  51  
  52  // If the user is logged in
  53  $user = wp_get_current_user();
  54  if ( $user->ID ) {
  55      if ( empty( $user->display_name ) )
  56          $user->display_name=$user->user_login;
  57      $comment_author       = $wpdb->escape($user->display_name);
  58      $comment_author_email = $wpdb->escape($user->user_email);
  59      $comment_author_url   = $wpdb->escape($user->user_url);
  60      if ( current_user_can('unfiltered_html') ) {
  61          if ( wp_create_nonce('unfiltered-html-comment_' . $comment_post_ID) != $_POST['_wp_unfiltered_html_comment'] ) {
  62              kses_remove_filters(); // start with a clean slate
  63              kses_init_filters(); // set up the filters
  64          }
  65      }
  66  } else {
  67      if ( get_option('comment_registration') || 'private' == $status->post_status )
  68          wp_die( __('Sorry, you must be logged in to post a comment.') );
  69  }
  70  
  71  $comment_type = '';
  72  
  73  if ( get_option('require_name_email') && !$user->ID ) {
  74      if ( 6 > strlen($comment_author_email) || '' == $comment_author )
  75          wp_die( __('Error: please fill the required fields (name, email).') );
  76      elseif ( !is_email($comment_author_email))
  77          wp_die( __('Error: please enter a valid email address.') );
  78  }
  79  
  80  if ( '' == $comment_content )
  81      wp_die( __('Error: please type a comment.') );
  82  
  83  $comment_parent = isset($_POST['comment_parent']) ? absint($_POST['comment_parent']) : 0;
  84  
  85  $commentdata = compact('comment_post_ID', 'comment_author', 'comment_author_email', 'comment_author_url', 'comment_content', 'comment_type', 'comment_parent', 'user_ID');
  86  
  87  $comment_id = wp_new_comment( $commentdata );
  88  
  89  $comment = get_comment($comment_id);
  90  if ( !$user->ID ) {
  91      $comment_cookie_lifetime = apply_filters('comment_cookie_lifetime', 30000000);
  92      setcookie('comment_author_' . COOKIEHASH, $comment->comment_author, time() + $comment_cookie_lifetime, COOKIEPATH, COOKIE_DOMAIN);
  93      setcookie('comment_author_email_' . COOKIEHASH, $comment->comment_author_email, time() + $comment_cookie_lifetime, COOKIEPATH, COOKIE_DOMAIN);
  94      setcookie('comment_author_url_' . COOKIEHASH, esc_url($comment->comment_author_url), time() + $comment_cookie_lifetime, COOKIEPATH, COOKIE_DOMAIN);
  95  }
  96  
  97  $location = empty($_POST['redirect_to']) ? get_comment_link($comment_id) : $_POST['redirect_to'] . '#comment-' . $comment_id;
  98  $location = apply_filters('comment_post_redirect', $location, $comment);
  99  
 100  wp_redirect($location);
 101  
 102  ?>