/usr/share/wordpress/wp-content/plugins/openid/comments.php is in wordpress-openid 3.3.4-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/**
* All the code required for handling OpenID comments. These functions should not be considered public,
* and may change without notice.
*/
// -- WordPress Hooks
add_action( 'preprocess_comment', 'openid_process_comment', -90);
add_action( 'init', 'openid_setup_akismet');
add_action( 'akismet_spam_caught', 'openid_akismet_spam_caught');
add_action( 'comment_post', 'update_comment_openid', 5 );
add_filter( 'option_require_name_email', 'openid_option_require_name_email' );
add_action( 'sanitize_comment_cookies', 'openid_sanitize_comment_cookies', 15);
add_action( 'openid_finish_auth', 'openid_finish_comment', 10, 2 );
if( get_option('openid_enable_approval') ) {
add_filter('pre_comment_approved', 'openid_comment_approval');
}
add_filter( 'get_comment_author_link', 'openid_comment_author_link');
if( get_option('openid_enable_commentform') ) {
add_action( 'wp', 'openid_js_setup', 9);
add_action( 'wp_footer', 'openid_comment_profilelink', 10);
add_action( 'comment_form', 'openid_comment_form', 10);
}
add_filter( 'openid_user_data', 'openid_get_user_data_form', 6, 2);
add_action( 'delete_comment', 'unset_comment_openid' );
add_action( 'init', 'openid_recent_comments');
/**
* Ensure akismet runs before OpenID.
*/
function openid_setup_akismet() {
if (has_filter('preprocess_comment', 'akismet_auto_check_comment')) {
remove_action('preprocess_comment', 'akismet_auto_check_comment', 1);
add_action('preprocess_comment', 'akismet_auto_check_comment', -99);
}
}
/**
* Akismet caught this comment as spam, so no need to do OpenID discovery on the URL.
*/
function openid_akismet_spam_caught() {
remove_action( 'preprocess_comment', 'openid_process_comment', -90);
}
/**
* Intercept comment submission and check if it includes a valid OpenID. If it does, save the entire POST
* array and begin the OpenID authentication process.
*
* regarding comment_type: http://trac.wordpress.org/ticket/2659
*
* @param array $comment comment data
* @return array comment data
*/
function openid_process_comment( $comment ) {
if ( array_key_exists('openid_skip', $_REQUEST) && $_REQUEST['openid_skip'] ) return $comment;
if ( $comment['comment_type'] != '' ) return $comment;
if ( array_key_exists('openid_identifier', $_POST) ) {
$openid_url = $_POST['openid_identifier'];
} elseif ( $_REQUEST['login_with_openid'] ) {
$openid_url = $_POST['url'];
}
@session_start();
unset($_SESSION['openid_posted_comment']);
if ( !empty($openid_url) ) { // Comment form's OpenID url is filled in.
$_SESSION['openid_comment_post'] = $_POST;
$_SESSION['openid_comment_post']['comment_author_openid'] = $openid_url;
$_SESSION['openid_comment_post']['openid_skip'] = 1;
openid_start_login($openid_url, 'comment');
// Failure to redirect at all, the URL is malformed or unreachable.
// Display an error message only if an explicit OpenID field was used. Otherwise,
// just ignore the error... it just means the user entered a normal URL.
if (array_key_exists('openid_identifier', $_POST)) {
openid_repost_comment_anonymously($_SESSION['openid_comment_post']);
}
}
// duplicate name and email check from wp-comments-post.php
if ( $comment['comment_type'] == '') {
openid_require_name_email();
}
return $comment;
}
/**
* Duplicated code from wp-comments-post.php to check for presence of comment author name and email
* address.
*/
function openid_require_name_email() {
$user = wp_get_current_user();
global $comment_author, $comment_author_email;
if ( get_option('require_name_email') && !$user->ID ) {
if ( 6 > strlen($comment_author_email) || '' == $comment_author ) {
wp_die( __('Error: please fill the required fields (name, email).', 'openid') );
} elseif ( !is_email($comment_author_email)) {
wp_die( __('Error: please enter a valid email address.', 'openid') );
}
}
}
/**
* This filter callback simply approves all OpenID comments, but later it could do more complicated logic
* like whitelists.
*
* @param string $approved comment approval status
* @return string new comment approval status
*/
function openid_comment_approval($approved) {
return ($_SESSION['openid_posted_comment'] ? 1 : $approved);
}
/**
* If the comment contains a valid OpenID, skip the check for requiring a name and email address. Even if
* this data isn't provided in the form, we may get it through other methods, so we don't want to bail out
* prematurely. After OpenID authentication has completed (and $_REQUEST['openid_skip'] is set), we don't
* interfere so that this data can be required if desired.
*
* @param boolean $value existing value of flag, whether to require name and email
* @return boolean new value of flag, whether to require name and email
* @see get_user_data
*/
function openid_option_require_name_email( $value ) {
$comment_page = (defined('OPENID_COMMENTS_POST_PAGE') ? OPENID_COMMENTS_POST_PAGE : 'wp-comments-post.php');
if ($GLOBALS['pagenow'] != $comment_page) {
return $value;
}
if (array_key_exists('openid_skip', $_REQUEST) && $_REQUEST['openid_skip']) {
return get_option('openid_no_require_name') ? false : $value;
}
// make sure we only process this once per request
static $bypass;
if ($bypass) {
return $value;
} else {
$bypass = true;
}
if (array_key_exists('openid_identifier', $_POST)) {
if( !empty( $_POST['openid_identifier'] ) ) {
return false;
}
} else {
global $comment_author_url;
if ( !empty($comment_author_url) ) {
return false;
}
}
return $value;
}
/**
* Make sure that a user's OpenID is stored and retrieved properly. This is important because the OpenID
* may be an i-name, but WordPress is expecting the comment URL cookie to be a valid URL.
*
* @wordpress-action sanitize_comment_cookies
*/
function openid_sanitize_comment_cookies() {
if ( isset($_COOKIE['comment_author_openid_'.COOKIEHASH]) ) {
// this might be an i-name, so we don't want to run clean_url()
remove_filter('pre_comment_author_url', 'clean_url');
$comment_author_url = apply_filters('pre_comment_author_url',
$_COOKIE['comment_author_openid_'.COOKIEHASH]);
$comment_author_url = stripslashes($comment_author_url);
$_COOKIE['comment_author_url_'.COOKIEHASH] = $comment_author_url;
}
}
/**
* Add OpenID class to author link.
*
* @filter: get_comment_author_link
**/
function openid_comment_author_link( $html ) {
if( is_comment_openid() ) {
if (preg_match('/<a[^>]* class=[^>]+>/', $html)) {
return preg_replace( '/(<a[^>]* class=[\'"]?)/', '\\1openid_link ' , $html );
} else {
return preg_replace( '/(<a[^>]*)/', '\\1 class="openid_link"' , $html );
}
}
return $html;
}
/**
* Check if the comment was posted with OpenID, either directly or by an author registered with OpenID. Update the comment accordingly.
*
* @action post_comment
*/
function update_comment_openid($comment_ID) {
session_start();
if ($_SESSION['openid_posted_comment']) {
set_comment_openid($comment_ID);
unset($_SESSION['openid_posted_comment']);
} else {
$comment = get_comment($comment_ID);
if ( is_user_openid($comment->user_id) ) {
set_comment_openid($comment_ID);
}
}
}
/**
* Print jQuery call for slylizing profile link.
*
* @action: comment_form
**/
function openid_comment_profilelink() {
global $wp_scripts;
if (comments_open() && is_user_openid() && $wp_scripts->query('openid')) {
echo '<script type="text/javascript">stylize_profilelink()</script>';
}
}
/**
* Print jQuery call to modify comment form.
*
* @action: comment_form
**/
function openid_comment_form() {
global $wp_scripts;
if (comments_open() && !is_user_logged_in() && isset($wp_scripts) && $wp_scripts->query('openid')) {
?>
<span id="openid_comment">
<label>
<input type="checkbox" id="login_with_openid" name="login_with_openid" checked="checked" />
<?php _e('Authenticate this comment using <span class="openid_link">OpenID</span>.', 'openid'); ?>
</label>
</span>
<script type="text/javascript">jQuery(function(){ add_openid_to_comment_form('<?php echo site_url('index.php') ?>', '<?php echo wp_create_nonce('openid_ajax') ?>') })</script>
<?php
}
}
function openid_repost_comment_anonymously($post) {
$comment_page = (defined('OPENID_COMMENTS_POST_PAGE') ? OPENID_COMMENTS_POST_PAGE : 'wp-comments-post.php');
$html = '
<h1>'.__('OpenID Authentication Error', 'openid').'</h1>
<p id="error">'.__('We were unable to authenticate your claimed OpenID, however you '
. 'can continue to post your comment without OpenID:', 'openid').'</p>
<form action="' . site_url("/$comment_page") . '" method="post">
<p>Name: <input name="author" value="'.$post['author'].'" /></p>
<p>Email: <input name="email" value="'.$post['email'].'" /></p>
<p>URL: <input name="url" value="'.$post['url'].'" /></p>
<textarea name="comment" cols="80%" rows="10">'.stripslashes($post['comment']).'</textarea>
<input type="submit" name="submit" value="'.__('Submit Comment').'" />';
foreach ($post as $name => $value) {
if (!in_array($name, array('author', 'email', 'url', 'comment', 'submit'))) {
$html .= '
<input type="hidden" name="'.$name.'" value="'.$value.'" />';
}
}
$html .= '</form>';
openid_page($html, __('OpenID Authentication Error', 'openid'));
}
/**
* Action method for completing the 'comment' action. This action is used when leaving a comment.
*
* @param string $identity_url verified OpenID URL
*/
function openid_finish_comment($identity_url, $action) {
if ($action != 'comment') return;
if (empty($identity_url)) {
openid_repost_comment_anonymously($_SESSION['openid_comment_post']);
}
openid_set_current_user($identity_url);
if (is_user_logged_in()) {
// simulate an authenticated comment submission
$_SESSION['openid_comment_post']['author'] = null;
$_SESSION['openid_comment_post']['email'] = null;
$_SESSION['openid_comment_post']['url'] = null;
} else {
// try to get user data from the verified OpenID
$user_data =& openid_get_user_data($identity_url);
if (!empty($user_data['display_name'])) {
$_SESSION['openid_comment_post']['author'] = $user_data['display_name'];
}
if (!empty($user_data['user_email'])) {
$_SESSION['openid_comment_post']['email'] = $user_data['user_email'];
}
$_SESSION['openid_comment_post']['url'] = $identity_url;
}
// record that we're about to post an OpenID authenticated comment.
// We can't actually record it in the database until after the repost below.
$_SESSION['openid_posted_comment'] = true;
$comment_page = (defined('OPENID_COMMENTS_POST_PAGE') ? OPENID_COMMENTS_POST_PAGE : 'wp-comments-post.php');
openid_repost(site_url("/$comment_page"), array_filter($_SESSION['openid_comment_post']));
}
/**
* Mark the specified comment as an OpenID comment.
*
* @param int $id id of comment to set as OpenID
*/
function set_comment_openid($id) {
$comment = get_comment($id);
$openid_comments = get_post_meta($comment->comment_post_ID, 'openid_comments', true);
if (!is_array($openid_comments)) {
$openid_comments = array();
}
$openid_comments[] = $id;
update_post_meta($comment->comment_post_ID, 'openid_comments', array_unique($openid_comments));
}
/**
* Unmark the specified comment as an OpenID comment
*
* @param int $id id of comment to set as OpenID
*/
function unset_comment_openid($id) {
$comment = get_comment($id);
$openid_comments = get_post_meta($comment->comment_post_ID, 'openid_comments', true);
if (is_array($openid_comments) && in_array($id, $openid_comments)) {
$new = array();
foreach($openid_comments as $c) {
if ($c == $id) continue;
$new[] = $c;
}
update_post_meta($comment->comment_post_ID, 'openid_comments', array_unique($new));
}
}
/**
* Retrieve user data from comment form.
*
* @param string $identity_url OpenID to get user data about
* @param reference $data reference to user data array
* @see get_user_data
*/
function openid_get_user_data_form($data, $identity_url) {
if ( array_key_exists('openid_comment_post', $_SESSION) ) {
$comment = $_SESSION['openid_comment_post'];
}
if ( !isset($comment) || !$comment) {
return $data;
}
if ($comment['email']) {
$data['user_email'] = $comment['email'];
}
if ($comment['author']) {
$data['nickname'] = $comment['author'];
$data['user_nicename'] = $comment['author'];
$data['display_name'] = $comment['author'];
}
return $data;
}
/**
* Remove the CSS snippet added by the Recent Comments widget because it breaks entries that include the OpenID logo.
*/
function openid_recent_comments() {
global $wp_widget_factory;
if ( $wp_widget_factory && array_key_exists('WP_Widget_Recent_Comments', $wp_widget_factory->widgets) ) {
// this is an ugly hack because remove_action doesn't actually work the way it should with objects
foreach ( array_keys($GLOBALS['wp_filter']['wp_head'][10]) as $key ) {
if ( strpos($key, 'WP_Widget_Recent_Commentsrecent_comments_style') === 0 ) {
remove_action('wp_head', $key);
return;
}
}
}
}
?>
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