WordPress PHP Cross Reference Blogging Systems

Source: /wp-comments-post.php - 160 lines - 4818 bytes - Text - Print

Description: Handles Comment Post to WordPress and prevents duplicate comment posting.

   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  $post = get_post($comment_post_ID);
  23  
  24  if ( empty( $post->comment_status ) ) {
  25      /**
  26       * Fires when a comment is attempted on a post that does not exist.
  27       *
  28       * @since 1.5.0
  29       *
  30       * @param int $comment_post_ID Post ID.
  31       */
  32      do_action( 'comment_id_not_found', $comment_post_ID );
  33      exit;
  34  }
  35  
  36  // get_post_status() will get the parent status for attachments.
  37  $status = get_post_status($post);
  38  
  39  $status_obj = get_post_status_object($status);
  40  
  41  if ( ! comments_open( $comment_post_ID ) ) {
  42      /**
  43       * Fires when a comment is attempted on a post that has comments closed.
  44       *
  45       * @since 1.5.0
  46       *
  47       * @param int $comment_post_ID Post ID.
  48       */
  49      do_action( 'comment_closed', $comment_post_ID );
  50      wp_die( __('Sorry, comments are closed for this item.') );
  51  } elseif ( 'trash' == $status ) {
  52      /**
  53       * Fires when a comment is attempted on a trashed post.
  54       *
  55       * @since 2.9.0
  56       *
  57       * @param int $comment_post_ID Post ID.
  58       */
  59      do_action( 'comment_on_trash', $comment_post_ID );
  60      exit;
  61  } elseif ( ! $status_obj->public && ! $status_obj->private ) {
  62      /**
  63       * Fires when a comment is attempted on a post in draft mode.
  64       *
  65       * @since 1.5.1
  66       *
  67       * @param int $comment_post_ID Post ID.
  68       */
  69      do_action( 'comment_on_draft', $comment_post_ID );
  70      exit;
  71  } elseif ( post_password_required( $comment_post_ID ) ) {
  72      /**
  73       * Fires when a comment is attempted on a password-protected post.
  74       *
  75       * @since 2.9.0
  76       *
  77       * @param int $comment_post_ID Post ID.
  78       */
  79      do_action( 'comment_on_password_protected', $comment_post_ID );
  80      exit;
  81  } else {
  82      /**
  83       * Fires before a comment is posted.
  84       *
  85       * @since 2.8.0
  86       *
  87       * @param int $comment_post_ID Post ID.
  88       */
  89      do_action( 'pre_comment_on_post', $comment_post_ID );
  90  }
  91  
  92  $comment_author       = ( isset($_POST['author']) )  ? trim(strip_tags($_POST['author'])) : null;
  93  $comment_author_email = ( isset($_POST['email']) )   ? trim($_POST['email']) : null;
  94  $comment_author_url   = ( isset($_POST['url']) )     ? trim($_POST['url']) : null;
  95  $comment_content      = ( isset($_POST['comment']) ) ? trim($_POST['comment']) : null;
  96  
  97  // If the user is logged in
  98  $user = wp_get_current_user();
  99  if ( $user->exists() ) {
 100      if ( empty( $user->display_name ) )
 101          $user->display_name=$user->user_login;
 102      $comment_author       = wp_slash( $user->display_name );
 103      $comment_author_email = wp_slash( $user->user_email );
 104      $comment_author_url   = wp_slash( $user->user_url );
 105      if ( current_user_can( 'unfiltered_html' ) ) {
 106          if ( ! isset( $_POST['_wp_unfiltered_html_comment'] )
 107              || ! wp_verify_nonce( $_POST['_wp_unfiltered_html_comment'], 'unfiltered-html-comment_' . $comment_post_ID )
 108          ) {
 109              kses_remove_filters(); // start with a clean slate
 110              kses_init_filters(); // set up the filters
 111          }
 112      }
 113  } else {
 114      if ( get_option('comment_registration') || 'private' == $status )
 115          wp_die( __('Sorry, you must be logged in to post a comment.') );
 116  }
 117  
 118  $comment_type = '';
 119  
 120  if ( get_option('require_name_email') && !$user->exists() ) {
 121      if ( 6 > strlen($comment_author_email) || '' == $comment_author )
 122          wp_die( __('<strong>ERROR</strong>: please fill the required fields (name, email).') );
 123      elseif ( !is_email($comment_author_email))
 124          wp_die( __('<strong>ERROR</strong>: please enter a valid email address.') );
 125  }
 126  
 127  if ( '' == $comment_content )
 128      wp_die( __('<strong>ERROR</strong>: please type a comment.') );
 129  
 130  $comment_parent = isset($_POST['comment_parent']) ? absint($_POST['comment_parent']) : 0;
 131  
 132  $commentdata = compact('comment_post_ID', 'comment_author', 'comment_author_email', 'comment_author_url', 'comment_content', 'comment_type', 'comment_parent', 'user_ID');
 133  
 134  $comment_id = wp_new_comment( $commentdata );
 135  $comment = get_comment($comment_id);
 136  
 137  /**
 138   * Perform other actions when comment cookies are set.
 139   *
 140   * @since 3.4.0
 141   *
 142   * @param object $comment Comment object.
 143   * @param WP_User $user   User object. The user may not exist.
 144   */
 145  do_action( 'set_comment_cookies', $comment, $user );
 146  
 147  $location = empty($_POST['redirect_to']) ? get_comment_link($comment_id) : $_POST['redirect_to'] . '#comment-' . $comment_id;
 148  
 149  /**
 150   * Filter the location URI to send the commenter after posting.
 151   *
 152   * @since 2.0.5
 153   *
 154   * @param string $location The 'redirect_to' URI sent via $_POST.
 155   * @param object $comment  Comment object.
 156   */
 157  $location = apply_filters( 'comment_post_redirect', $location, $comment );
 158  
 159  wp_safe_redirect( $location );
 160  exit;

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