diff -r 000000000000 -r d970ebf37754 wp/wp-comments-post.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wp/wp-comments-post.php	Wed Nov 06 03:21:17 2013 +0000
@@ -0,0 +1,154 @@
+<?php
+/**
+ * Handles Comment Post to WordPress and prevents duplicate comment posting.
+ *
+ * @package WordPress
+ */
+
+if ( 'POST' != $_SERVER['REQUEST_METHOD'] ) {
+	header('Allow: POST');
+	header('HTTP/1.1 405 Method Not Allowed');
+	header('Content-Type: text/plain');
+	exit;
+}
+
+/** Sets up the WordPress Environment. */
+require( dirname(__FILE__) . '/wp-load.php' );
+
+nocache_headers();
+
+$comment_post_ID = isset($_POST['comment_post_ID']) ? (int) $_POST['comment_post_ID'] : 0;
+
+$post = get_post($comment_post_ID);
+
+if ( empty( $post->comment_status ) ) {
+	/**
+	 * Fires when a comment is attempted on a post that does not exist.
+	 *
+	 * @since unknown
+	 * @param int $comment_post_ID Post ID.
+	 */
+	do_action( 'comment_id_not_found', $comment_post_ID );
+	exit;
+}
+
+// get_post_status() will get the parent status for attachments.
+$status = get_post_status($post);
+
+$status_obj = get_post_status_object($status);
+
+if ( ! comments_open( $comment_post_ID ) ) {
+	/**
+	 * Fires when a comment is attempted on a post that has comments closed.
+	 *
+	 * @since unknown
+	 * @param int $comment_post_ID Post ID.
+	 */
+	do_action( 'comment_closed', $comment_post_ID );
+	wp_die( __('Sorry, comments are closed for this item.') );
+} elseif ( 'trash' == $status ) {
+	/**
+	 * Fires when a comment is attempted on a trashed post.
+	 *
+	 * @since 2.9.0
+	 * @param int $comment_post_ID Post ID.
+	 */
+	do_action( 'comment_on_trash', $comment_post_ID );
+	exit;
+} elseif ( ! $status_obj->public && ! $status_obj->private ) {
+	/**
+	 * Fires when a comment is attempted on a post in draft mode.
+	 *
+	 * @since unknown
+	 * @param int $comment_post_ID Post ID.
+	 */
+	do_action( 'comment_on_draft', $comment_post_ID );
+	exit;
+} elseif ( post_password_required( $comment_post_ID ) ) {
+	/**
+	 * Fires when a comment is attempted on a password-protected post.
+	 *
+	 * @since unknown
+	 * @param int $comment_post_ID Post ID.
+	 */
+	do_action( 'comment_on_password_protected', $comment_post_ID );
+	exit;
+} else {
+	/**
+	 * Fires before a comment is posted.
+	 *
+	 * @since unknown
+	 * @param int $comment_post_ID Post ID.
+	 */
+	do_action( 'pre_comment_on_post', $comment_post_ID );
+}
+
+$comment_author       = ( isset($_POST['author']) )  ? trim(strip_tags($_POST['author'])) : null;
+$comment_author_email = ( isset($_POST['email']) )   ? trim($_POST['email']) : null;
+$comment_author_url   = ( isset($_POST['url']) )     ? trim($_POST['url']) : null;
+$comment_content      = ( isset($_POST['comment']) ) ? trim($_POST['comment']) : null;
+
+// If the user is logged in
+$user = wp_get_current_user();
+if ( $user->exists() ) {
+	if ( empty( $user->display_name ) )
+		$user->display_name=$user->user_login;
+	$comment_author       = wp_slash( $user->display_name );
+	$comment_author_email = wp_slash( $user->user_email );
+	$comment_author_url   = wp_slash( $user->user_url );
+	if ( current_user_can( 'unfiltered_html' ) ) {
+		if ( ! isset( $_POST['_wp_unfiltered_html_comment'] )
+			|| ! wp_verify_nonce( $_POST['_wp_unfiltered_html_comment'], 'unfiltered-html-comment_' . $comment_post_ID )
+		) {
+			kses_remove_filters(); // start with a clean slate
+			kses_init_filters(); // set up the filters
+		}
+	}
+} else {
+	if ( get_option('comment_registration') || 'private' == $status )
+		wp_die( __('Sorry, you must be logged in to post a comment.') );
+}
+
+$comment_type = '';
+
+if ( get_option('require_name_email') && !$user->exists() ) {
+	if ( 6 > strlen($comment_author_email) || '' == $comment_author )
+		wp_die( __('<strong>ERROR</strong>: please fill the required fields (name, email).') );
+	elseif ( !is_email($comment_author_email))
+		wp_die( __('<strong>ERROR</strong>: please enter a valid email address.') );
+}
+
+if ( '' == $comment_content )
+	wp_die( __('<strong>ERROR</strong>: please type a comment.') );
+
+$comment_parent = isset($_POST['comment_parent']) ? absint($_POST['comment_parent']) : 0;
+
+$commentdata = compact('comment_post_ID', 'comment_author', 'comment_author_email', 'comment_author_url', 'comment_content', 'comment_type', 'comment_parent', 'user_ID');
+
+$comment_id = wp_new_comment( $commentdata );
+$comment = get_comment($comment_id);
+
+/**
+ * Perform other actions when comment cookies are set.
+ *
+ * @since 3.4.0
+ *
+ * @param object $comment Comment object.
+ * @param WP_User $user   User object. The user may not exist.
+ */
+do_action( 'set_comment_cookies', $comment, $user );
+
+$location = empty($_POST['redirect_to']) ? get_comment_link($comment_id) : $_POST['redirect_to'] . '#comment-' . $comment_id;
+
+/**
+ * The location URI to send commenter after posting.
+ *
+ * @since unknown
+ *
+ * @param string $location The 'redirect_to' URI sent via $_POST.
+ * @param object $comment  Comment object.
+ */
+$location = apply_filters( 'comment_post_redirect', $location, $comment );
+
+wp_safe_redirect( $location );
+exit;