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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 = (int) $_POST['comment_post_ID'];
  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', $comment_post_ID);
  26      exit;
  27  } elseif ( !comments_open($comment_post_ID) ) {
  28      do_action('comment_closed', $comment_post_ID);
  29      wp_die( __('Sorry, comments are closed for this item.') );
  30  } elseif ( in_array($status->post_status, array('draft', 'pending') ) ) {
  31      do_action('comment_on_draft', $comment_post_ID);
  32      exit;
  33  } else {
  34      do_action('pre_comment_on_post', $comment_post_ID);
  35  }
  36  
  37  $comment_author       = ( isset($_POST['author']) )  ? trim(strip_tags($_POST['author'])) : null;
  38  $comment_author_email = ( isset($_POST['email']) )   ? trim($_POST['email']) : null;
  39  $comment_author_url   = ( isset($_POST['url']) )     ? trim($_POST['url']) : null;
  40  $comment_content      = ( isset($_POST['comment']) ) ? trim($_POST['comment']) : null;
  41  
  42  // If the user is logged in
  43  $user = wp_get_current_user();
  44  if ( $user->ID ) {
  45      if ( empty( $user->display_name ) )
  46          $user->display_name=$user->user_login;
  47      $comment_author       = $wpdb->escape($user->display_name);
  48      $comment_author_email = $wpdb->escape($user->user_email);
  49      $comment_author_url   = $wpdb->escape($user->user_url);
  50      if ( current_user_can('unfiltered_html') ) {
  51          if ( wp_create_nonce('unfiltered-html-comment_' . $comment_post_ID) != $_POST['_wp_unfiltered_html_comment'] ) {
  52              kses_remove_filters(); // start with a clean slate
  53              kses_init_filters(); // set up the filters
  54          }
  55      }
  56  } else {
  57      if ( get_option('comment_registration') || 'private' == $status->post_status )
  58          wp_die( __('Sorry, you must be logged in to post a comment.') );
  59  }
  60  
  61  $comment_type = '';
  62  
  63  if ( get_option('require_name_email') && !$user->ID ) {
  64      if ( 6 > strlen($comment_author_email) || '' == $comment_author )
  65          wp_die( __('Error: please fill the required fields (name, email).') );
  66      elseif ( !is_email($comment_author_email))
  67          wp_die( __('Error: please enter a valid email address.') );
  68  }
  69  
  70  if ( '' == $comment_content )
  71      wp_die( __('Error: please type a comment.') );
  72  
  73  $comment_parent = isset($_POST['comment_parent']) ? absint($_POST['comment_parent']) : 0;
  74  
  75  $commentdata = compact('comment_post_ID', 'comment_author', 'comment_author_email', 'comment_author_url', 'comment_content', 'comment_type', 'comment_parent', 'user_ID');
  76  
  77  $comment_id = wp_new_comment( $commentdata );
  78  
  79  $comment = get_comment($comment_id);
  80  if ( !$user->ID ) {
  81      $comment_cookie_lifetime = apply_filters('comment_cookie_lifetime', 30000000);
  82      setcookie('comment_author_' . COOKIEHASH, $comment->comment_author, time() + $comment_cookie_lifetime, COOKIEPATH, COOKIE_DOMAIN);
  83      setcookie('comment_author_email_' . COOKIEHASH, $comment->comment_author_email, time() + $comment_cookie_lifetime, COOKIEPATH, COOKIE_DOMAIN);
  84      setcookie('comment_author_url_' . COOKIEHASH, esc_url($comment->comment_author_url), time() + $comment_cookie_lifetime, COOKIEPATH, COOKIE_DOMAIN);
  85  }
  86  
  87  $location = empty($_POST['redirect_to']) ? get_comment_link($comment_id) : $_POST['redirect_to'] . '#comment-' . $comment_id;
  88  $location = apply_filters('comment_post_redirect', $location, $comment);
  89  
  90  wp_redirect($location);
  91  
  92  ?>