<?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) ) {

	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) ) {

	do_action('comment_closed', $comment_post_ID);

	wp_die( __('Sorry, comments are closed for this item.') );

} elseif ( 'trash' == $status ) {

	do_action('comment_on_trash', $comment_post_ID);

	exit;

} elseif ( !$status_obj->public && !$status_obj->private ) {

	do_action('comment_on_draft', $comment_post_ID);

	exit;

} elseif ( post_password_required($comment_post_ID) ) {

	do_action('comment_on_password_protected', $comment_post_ID);

	exit;

} else {

	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       = $wpdb->escape($user->display_name);

	$comment_author_email = $wpdb->escape($user->user_email);

	$comment_author_url   = $wpdb->escape($user->user_url);

	if ( current_user_can('unfiltered_html') ) {

		if ( wp_create_nonce('unfiltered-html-comment_' . $comment_post_ID) != $_POST['_wp_unfiltered_html_comment'] ) {

			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);

do_action('set_comment_cookies', $comment, $user);

$location = empty($_POST['redirect_to']) ? get_comment_link($comment_id) : $_POST['redirect_to'] . '#comment-' . $comment_id;

$location = apply_filters('comment_post_redirect', $location, $comment);

wp_safe_redirect( $location );

exit;