/**
* Core Comment API
*
* @package WordPress
* @subpackage Comment
*/
/**
* Check whether a comment passes internal checks to be allowed to add.
*
* If manual comment moderation is set in the administration, then all checks,
* regardless of their type and substance, will fail and the function will
* return false.
*
* If the number of links exceeds the amount in the administration, then the
* check fails. If any of the parameter contents contain any disallowed words,
* then the check fails.
*
* If the comment author was approved before, then the comment is automatically
* approved.
*
* If all checks pass, the function will return true.
*
* @since 1.2.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param string $author Comment author name.
* @param string $email Comment author email.
* @param string $url Comment author URL.
* @param string $comment Content of the comment.
* @param string $user_ip Comment author IP address.
* @param string $user_agent Comment author User-Agent.
* @param string $comment_type Comment type, either user-submitted comment,
* trackback, or pingback.
* @return bool If all checks pass, true, otherwise false.
*/
function check_comment( $author, $email, $url, $comment, $user_ip, $user_agent, $comment_type ) {
global $wpdb;
// If manual moderation is enabled, skip all checks and return false.
if ( 1 == get_option( 'comment_moderation' ) ) {
return false;
}
/** This filter is documented in wp-includes/comment-template.php */
$comment = apply_filters( 'comment_text', $comment, null, array() );
// Check for the number of external links if a max allowed number is set.
$max_links = get_option( 'comment_max_links' );
if ( $max_links ) {
$num_links = preg_match_all( '/]*href/i', $comment, $out );
/**
* Filters the number of links found in a comment.
*
* @since 3.0.0
* @since 4.7.0 Added the `$comment` parameter.
*
* @param int $num_links The number of links found.
* @param string $url Comment author's URL. Included in allowed links total.
* @param string $comment Content of the comment.
*/
$num_links = apply_filters( 'comment_max_links_url', $num_links, $url, $comment );
/*
* If the number of links in the comment exceeds the allowed amount,
* fail the check by returning false.
*/
if ( $num_links >= $max_links ) {
return false;
}
}
$mod_keys = trim( get_option( 'moderation_keys' ) );
// If moderation 'keys' (keywords) are set, process them.
if ( ! empty( $mod_keys ) ) {
$words = explode( "\n", $mod_keys );
foreach ( (array) $words as $word ) {
$word = trim( $word );
// Skip empty lines.
if ( empty( $word ) ) {
continue;
}
/*
* Do some escaping magic so that '#' (number of) characters in the spam
* words don't break things:
*/
$word = preg_quote( $word, '#' );
/*
* Check the comment fields for moderation keywords. If any are found,
* fail the check for the given field by returning false.
*/
$pattern = "#$word#i";
if ( preg_match( $pattern, $author ) ) {
return false;
}
if ( preg_match( $pattern, $email ) ) {
return false;
}
if ( preg_match( $pattern, $url ) ) {
return false;
}
if ( preg_match( $pattern, $comment ) ) {
return false;
}
if ( preg_match( $pattern, $user_ip ) ) {
return false;
}
if ( preg_match( $pattern, $user_agent ) ) {
return false;
}
}
}
/*
* Check if the option to approve comments by previously-approved authors is enabled.
*
* If it is enabled, check whether the comment author has a previously-approved comment,
* as well as whether there are any moderation keywords (if set) present in the author
* email address. If both checks pass, return true. Otherwise, return false.
*/
if ( 1 == get_option( 'comment_previously_approved' ) ) {
if ( 'trackback' !== $comment_type && 'pingback' !== $comment_type && '' !== $author && '' !== $email ) {
$comment_user = get_user_by( 'email', wp_unslash( $email ) );
if ( ! empty( $comment_user->ID ) ) {
$ok_to_comment = $wpdb->get_var( $wpdb->prepare( "SELECT comment_approved FROM $wpdb->comments WHERE user_id = %d AND comment_approved = '1' LIMIT 1", $comment_user->ID ) );
} else {
// expected_slashed ($author, $email)
$ok_to_comment = $wpdb->get_var( $wpdb->prepare( "SELECT comment_approved FROM $wpdb->comments WHERE comment_author = %s AND comment_author_email = %s and comment_approved = '1' LIMIT 1", $author, $email ) );
}
if ( ( 1 == $ok_to_comment ) &&
( empty( $mod_keys ) || false === strpos( $email, $mod_keys ) ) ) {
return true;
} else {
return false;
}
} else {
return false;
}
}
return true;
}
/**
* Retrieve the approved comments for post $post_id.
*
* @since 2.0.0
* @since 4.1.0 Refactored to leverage WP_Comment_Query over a direct query.
*
* @param int $post_id The ID of the post.
* @param array $args Optional. See WP_Comment_Query::__construct() for information on accepted arguments.
* @return int|array The approved comments, or number of comments if `$count`
* argument is true.
*/
function get_approved_comments( $post_id, $args = array() ) {
if ( ! $post_id ) {
return array();
}
$defaults = array(
'status' => 1,
'post_id' => $post_id,
'order' => 'ASC',
);
$parsed_args = wp_parse_args( $args, $defaults );
$query = new WP_Comment_Query;
return $query->query( $parsed_args );
}
/**
* Retrieves comment data given a comment ID or comment object.
*
* If an object is passed then the comment data will be cached and then returned
* after being passed through a filter. If the comment is empty, then the global
* comment variable will be used, if it is set.
*
* @since 2.0.0
*
* @global WP_Comment $comment Global comment object.
*
* @param WP_Comment|string|int $comment Comment to retrieve.
* @param string $output Optional. The required return type. One of OBJECT, ARRAY_A, or ARRAY_N, which
* correspond to a WP_Comment object, an associative array, or a numeric array,
* respectively. Default OBJECT.
* @return WP_Comment|array|null Depends on $output value.
*/
function get_comment( $comment = null, $output = OBJECT ) {
if ( empty( $comment ) && isset( $GLOBALS['comment'] ) ) {
$comment = $GLOBALS['comment'];
}
if ( $comment instanceof WP_Comment ) {
$_comment = $comment;
} elseif ( is_object( $comment ) ) {
$_comment = new WP_Comment( $comment );
} else {
$_comment = WP_Comment::get_instance( $comment );
}
if ( ! $_comment ) {
return null;
}
/**
* Fires after a comment is retrieved.
*
* @since 2.3.0
*
* @param WP_Comment $_comment Comment data.
*/
$_comment = apply_filters( 'get_comment', $_comment );
if ( OBJECT === $output ) {
return $_comment;
} elseif ( ARRAY_A === $output ) {
return $_comment->to_array();
} elseif ( ARRAY_N === $output ) {
return array_values( $_comment->to_array() );
}
return $_comment;
}
/**
* Retrieve a list of comments.
*
* The comment list can be for the blog as a whole or for an individual post.
*
* @since 2.7.0
*
* @param string|array $args Optional. Array or string of arguments. See WP_Comment_Query::__construct()
* for information on accepted arguments. Default empty.
* @return int|array List of comments or number of found comments if `$count` argument is true.
*/
function get_comments( $args = '' ) {
$query = new WP_Comment_Query;
return $query->query( $args );
}
/**
* Retrieve all of the WordPress supported comment statuses.
*
* Comments have a limited set of valid status values, this provides the comment
* status values and descriptions.
*
* @since 2.7.0
*
* @return string[] List of comment status labels keyed by status.
*/
function get_comment_statuses() {
$status = array(
'hold' => __( 'Unapproved' ),
'approve' => _x( 'Approved', 'comment status' ),
'spam' => _x( 'Spam', 'comment status' ),
'trash' => _x( 'Trash', 'comment status' ),
);
return $status;
}
/**
* Gets the default comment status for a post type.
*
* @since 4.3.0
*
* @param string $post_type Optional. Post type. Default 'post'.
* @param string $comment_type Optional. Comment type. Default 'comment'.
* @return string Expected return value is 'open' or 'closed'.
*/
function get_default_comment_status( $post_type = 'post', $comment_type = 'comment' ) {
switch ( $comment_type ) {
case 'pingback':
case 'trackback':
$supports = 'trackbacks';
$option = 'ping';
break;
default:
$supports = 'comments';
$option = 'comment';
break;
}
// Set the status.
if ( 'page' === $post_type ) {
$status = 'closed';
} elseif ( post_type_supports( $post_type, $supports ) ) {
$status = get_option( "default_{$option}_status" );
} else {
$status = 'closed';
}
/**
* Filters the default comment status for the given post type.
*
* @since 4.3.0
*
* @param string $status Default status for the given post type,
* either 'open' or 'closed'.
* @param string $post_type Post type. Default is `post`.
* @param string $comment_type Type of comment. Default is `comment`.
*/
return apply_filters( 'get_default_comment_status', $status, $post_type, $comment_type );
}
/**
* The date the last comment was modified.
*
* @since 1.5.0
* @since 4.7.0 Replaced caching the modified date in a local static variable
* with the Object Cache API.
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param string $timezone Which timezone to use in reference to 'gmt', 'blog', or 'server' locations.
* @return string|false Last comment modified date on success, false on failure.
*/
function get_lastcommentmodified( $timezone = 'server' ) {
global $wpdb;
$timezone = strtolower( $timezone );
$key = "lastcommentmodified:$timezone";
$comment_modified_date = wp_cache_get( $key, 'timeinfo' );
if ( false !== $comment_modified_date ) {
return $comment_modified_date;
}
switch ( $timezone ) {
case 'gmt':
$comment_modified_date = $wpdb->get_var( "SELECT comment_date_gmt FROM $wpdb->comments WHERE comment_approved = '1' ORDER BY comment_date_gmt DESC LIMIT 1" );
break;
case 'blog':
$comment_modified_date = $wpdb->get_var( "SELECT comment_date FROM $wpdb->comments WHERE comment_approved = '1' ORDER BY comment_date_gmt DESC LIMIT 1" );
break;
case 'server':
$add_seconds_server = gmdate( 'Z' );
$comment_modified_date = $wpdb->get_var( $wpdb->prepare( "SELECT DATE_ADD(comment_date_gmt, INTERVAL %s SECOND) FROM $wpdb->comments WHERE comment_approved = '1' ORDER BY comment_date_gmt DESC LIMIT 1", $add_seconds_server ) );
break;
}
if ( $comment_modified_date ) {
wp_cache_set( $key, $comment_modified_date, 'timeinfo' );
return $comment_modified_date;
}
return false;
}
/**
* Retrieves the total comment counts for the whole site or a single post.
*
* Unlike wp_count_comments(), this function always returns the live comment counts without caching.
*
* @since 2.0.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param int $post_id Optional. Restrict the comment counts to the given post. Default 0, which indicates that
* comment counts for the whole site will be retrieved.
* @return array() {
* The number of comments keyed by their status.
*
* @type int $approved The number of approved comments.
* @type int $awaiting_moderation The number of comments awaiting moderation (a.k.a. pending).
* @type int $spam The number of spam comments.
* @type int $trash The number of trashed comments.
* @type int $post-trashed The number of comments for posts that are in the trash.
* @type int $total_comments The total number of non-trashed comments, including spam.
* @type int $all The total number of pending or approved comments.
* }
*/
function get_comment_count( $post_id = 0 ) {
global $wpdb;
$post_id = (int) $post_id;
$where = '';
if ( $post_id > 0 ) {
$where = $wpdb->prepare( 'WHERE comment_post_ID = %d', $post_id );
}
$totals = (array) $wpdb->get_results(
"
SELECT comment_approved, COUNT( * ) AS total
FROM {$wpdb->comments}
{$where}
GROUP BY comment_approved
",
ARRAY_A
);
$comment_count = array(
'approved' => 0,
'awaiting_moderation' => 0,
'spam' => 0,
'trash' => 0,
'post-trashed' => 0,
'total_comments' => 0,
'all' => 0,
);
foreach ( $totals as $row ) {
switch ( $row['comment_approved'] ) {
case 'trash':
$comment_count['trash'] = $row['total'];
break;
case 'post-trashed':
$comment_count['post-trashed'] = $row['total'];
break;
case 'spam':
$comment_count['spam'] = $row['total'];
$comment_count['total_comments'] += $row['total'];
break;
case '1':
$comment_count['approved'] = $row['total'];
$comment_count['total_comments'] += $row['total'];
$comment_count['all'] += $row['total'];
break;
case '0':
$comment_count['awaiting_moderation'] = $row['total'];
$comment_count['total_comments'] += $row['total'];
$comment_count['all'] += $row['total'];
break;
default:
break;
}
}
return array_map( 'intval', $comment_count );
}
//
// Comment meta functions.
//
/**
* Add meta data field to a comment.
*
* @since 2.9.0
*
* @link https://developer.wordpress.org/reference/functions/add_comment_meta/
*
* @param int $comment_id Comment ID.
* @param string $meta_key Metadata name.
* @param mixed $meta_value Metadata value. Must be serializable if non-scalar.
* @param bool $unique Optional. Whether the same key should not be added.
* Default false.
* @return int|false Meta ID on success, false on failure.
*/
function add_comment_meta( $comment_id, $meta_key, $meta_value, $unique = false ) {
return add_metadata( 'comment', $comment_id, $meta_key, $meta_value, $unique );
}
/**
* Remove metadata matching criteria from a comment.
*
* You can match based on the key, or key and value. Removing based on key and
* value, will keep from removing duplicate metadata with the same key. It also
* allows removing all metadata matching key, if needed.
*
* @since 2.9.0
*
* @link https://developer.wordpress.org/reference/functions/delete_comment_meta/
*
* @param int $comment_id Comment ID.
* @param string $meta_key Metadata name.
* @param mixed $meta_value Optional. Metadata value. If provided,
* rows will only be removed that match the value.
* Must be serializable if non-scalar. Default empty.
* @return bool True on success, false on failure.
*/
function delete_comment_meta( $comment_id, $meta_key, $meta_value = '' ) {
return delete_metadata( 'comment', $comment_id, $meta_key, $meta_value );
}
/**
* Retrieve comment meta field for a comment.
*
* @since 2.9.0
*
* @link https://developer.wordpress.org/reference/functions/get_comment_meta/
*
* @param int $comment_id Comment ID.
* @param string $key Optional. The meta key to retrieve. By default,
* returns data for all keys.
* @param bool $single Optional. Whether to return a single value.
* This parameter has no effect if `$key` is not specified.
* Default false.
* @return mixed An array of values if `$single` is false.
* The value of meta data field if `$single` is true.
* False for an invalid `$comment_id` (non-numeric, zero, or negative value).
* An empty string if a valid but non-existing comment ID is passed.
*/
function get_comment_meta( $comment_id, $key = '', $single = false ) {
return get_metadata( 'comment', $comment_id, $key, $single );
}
/**
* Update comment meta field based on comment ID.
*
* Use the $prev_value parameter to differentiate between meta fields with the
* same key and comment ID.
*
* If the meta field for the comment does not exist, it will be added.
*
* @since 2.9.0
*
* @link https://developer.wordpress.org/reference/functions/update_comment_meta/
*
* @param int $comment_id Comment ID.
* @param string $meta_key Metadata key.
* @param mixed $meta_value Metadata value. Must be serializable if non-scalar.
* @param mixed $prev_value Optional. Previous value to check before updating.
* If specified, only update existing metadata entries with
* this value. Otherwise, update all entries. Default empty.
* @return int|bool Meta ID if the key didn't exist, true on successful update,
* false on failure or if the value passed to the function
* is the same as the one that is already in the database.
*/
function update_comment_meta( $comment_id, $meta_key, $meta_value, $prev_value = '' ) {
return update_metadata( 'comment', $comment_id, $meta_key, $meta_value, $prev_value );
}
/**
* Queues comments for metadata lazy-loading.
*
* @since 4.5.0
*
* @param WP_Comment[] $comments Array of comment objects.
*/
function wp_queue_comments_for_comment_meta_lazyload( $comments ) {
// Don't use `wp_list_pluck()` to avoid by-reference manipulation.
$comment_ids = array();
if ( is_array( $comments ) ) {
foreach ( $comments as $comment ) {
if ( $comment instanceof WP_Comment ) {
$comment_ids[] = $comment->comment_ID;
}
}
}
if ( $comment_ids ) {
$lazyloader = wp_metadata_lazyloader();
$lazyloader->queue_objects( 'comment', $comment_ids );
}
}
/**
* Sets the cookies used to store an unauthenticated commentator's identity. Typically used
* to recall previous comments by this commentator that are still held in moderation.
*
* @since 3.4.0
* @since 4.9.6 The `$cookies_consent` parameter was added.
*
* @param WP_Comment $comment Comment object.
* @param WP_User $user Comment author's user object. The user may not exist.
* @param bool $cookies_consent Optional. Comment author's consent to store cookies. Default true.
*/
function wp_set_comment_cookies( $comment, $user, $cookies_consent = true ) {
// If the user already exists, or the user opted out of cookies, don't set cookies.
if ( $user->exists() ) {
return;
}
if ( false === $cookies_consent ) {
// Remove any existing cookies.
$past = time() - YEAR_IN_SECONDS;
setcookie( 'comment_author_' . COOKIEHASH, ' ', $past, COOKIEPATH, COOKIE_DOMAIN );
setcookie( 'comment_author_email_' . COOKIEHASH, ' ', $past, COOKIEPATH, COOKIE_DOMAIN );
setcookie( 'comment_author_url_' . COOKIEHASH, ' ', $past, COOKIEPATH, COOKIE_DOMAIN );
return;
}
/**
* Filters the lifetime of the comment cookie in seconds.
*
* @since 2.8.0
*
* @param int $seconds Comment cookie lifetime. Default 30000000.
*/
$comment_cookie_lifetime = time() + apply_filters( 'comment_cookie_lifetime', 30000000 );
$secure = ( 'https' === parse_url( home_url(), PHP_URL_SCHEME ) );
setcookie( 'comment_author_' . COOKIEHASH, $comment->comment_author, $comment_cookie_lifetime, COOKIEPATH, COOKIE_DOMAIN, $secure );
setcookie( 'comment_author_email_' . COOKIEHASH, $comment->comment_author_email, $comment_cookie_lifetime, COOKIEPATH, COOKIE_DOMAIN, $secure );
setcookie( 'comment_author_url_' . COOKIEHASH, esc_url( $comment->comment_author_url ), $comment_cookie_lifetime, COOKIEPATH, COOKIE_DOMAIN, $secure );
}
/**
* Sanitizes the cookies sent to the user already.
*
* Will only do anything if the cookies have already been created for the user.
* Mostly used after cookies had been sent to use elsewhere.
*
* @since 2.0.4
*/
function sanitize_comment_cookies() {
if ( isset( $_COOKIE[ 'comment_author_' . COOKIEHASH ] ) ) {
/**
* Filters the comment author's name cookie before it is set.
*
* When this filter hook is evaluated in wp_filter_comment(),
* the comment author's name string is passed.
*
* @since 1.5.0
*
* @param string $author_cookie The comment author name cookie.
*/
$comment_author = apply_filters( 'pre_comment_author_name', $_COOKIE[ 'comment_author_' . COOKIEHASH ] );
$comment_author = wp_unslash( $comment_author );
$comment_author = esc_attr( $comment_author );
$_COOKIE[ 'comment_author_' . COOKIEHASH ] = $comment_author;
}
if ( isset( $_COOKIE[ 'comment_author_email_' . COOKIEHASH ] ) ) {
/**
* Filters the comment author's email cookie before it is set.
*
* When this filter hook is evaluated in wp_filter_comment(),
* the comment author's email string is passed.
*
* @since 1.5.0
*
* @param string $author_email_cookie The comment author email cookie.
*/
$comment_author_email = apply_filters( 'pre_comment_author_email', $_COOKIE[ 'comment_author_email_' . COOKIEHASH ] );
$comment_author_email = wp_unslash( $comment_author_email );
$comment_author_email = esc_attr( $comment_author_email );
$_COOKIE[ 'comment_author_email_' . COOKIEHASH ] = $comment_author_email;
}
if ( isset( $_COOKIE[ 'comment_author_url_' . COOKIEHASH ] ) ) {
/**
* Filters the comment author's URL cookie before it is set.
*
* When this filter hook is evaluated in wp_filter_comment(),
* the comment author's URL string is passed.
*
* @since 1.5.0
*
* @param string $author_url_cookie The comment author URL cookie.
*/
$comment_author_url = apply_filters( 'pre_comment_author_url', $_COOKIE[ 'comment_author_url_' . COOKIEHASH ] );
$comment_author_url = wp_unslash( $comment_author_url );
$_COOKIE[ 'comment_author_url_' . COOKIEHASH ] = $comment_author_url;
}
}
/**
* Validates whether this comment is allowed to be made.
*
* @since 2.0.0
* @since 4.7.0 The `$avoid_die` parameter was added, allowing the function
* to return a WP_Error object instead of dying.
* @since 5.5.0 The `$avoid_die` parameter was renamed to `$wp_error`.
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param array $commentdata Contains information on the comment.
* @param bool $wp_error When true, a disallowed comment will result in the function
* returning a WP_Error object, rather than executing wp_die().
* Default false.
* @return int|string|WP_Error Allowed comments return the approval status (0|1|'spam'|'trash').
* If `$wp_error` is true, disallowed comments return a WP_Error.
*/
function wp_allow_comment( $commentdata, $wp_error = false ) {
global $wpdb;
// Simple duplicate check.
// expected_slashed ($comment_post_ID, $comment_author, $comment_author_email, $comment_content)
$dupe = $wpdb->prepare(
"SELECT comment_ID FROM $wpdb->comments WHERE comment_post_ID = %d AND comment_parent = %s AND comment_approved != 'trash' AND ( comment_author = %s ",
wp_unslash( $commentdata['comment_post_ID'] ),
wp_unslash( $commentdata['comment_parent'] ),
wp_unslash( $commentdata['comment_author'] )
);
if ( $commentdata['comment_author_email'] ) {
$dupe .= $wpdb->prepare(
'AND comment_author_email = %s ',
wp_unslash( $commentdata['comment_author_email'] )
);
}
$dupe .= $wpdb->prepare(
') AND comment_content = %s LIMIT 1',
wp_unslash( $commentdata['comment_content'] )
);
$dupe_id = $wpdb->get_var( $dupe );
/**
* Filters the ID, if any, of the duplicate comment found when creating a new comment.
*
* Return an empty value from this filter to allow what WP considers a duplicate comment.
*
* @since 4.4.0
*
* @param int $dupe_id ID of the comment identified as a duplicate.
* @param array $commentdata Data for the comment being created.
*/
$dupe_id = apply_filters( 'duplicate_comment_id', $dupe_id, $commentdata );
if ( $dupe_id ) {
/**
* Fires immediately after a duplicate comment is detected.
*
* @since 3.0.0
*
* @param array $commentdata Comment data.
*/
do_action( 'comment_duplicate_trigger', $commentdata );
/**
* Filters duplicate comment error message.
*
* @since 5.2.0
*
* @param string $comment_duplicate_message Duplicate comment error message.
*/
$comment_duplicate_message = apply_filters( 'comment_duplicate_message', __( 'Duplicate comment detected; it looks as though you’ve already said that!' ) );
if ( $wp_error ) {
return new WP_Error( 'comment_duplicate', $comment_duplicate_message, 409 );
} else {
if ( wp_doing_ajax() ) {
die( $comment_duplicate_message );
}
wp_die( $comment_duplicate_message, 409 );
}
}
/**
* Fires immediately before a comment is marked approved.
*
* Allows checking for comment flooding.
*
* @since 2.3.0
* @since 4.7.0 The `$avoid_die` parameter was added.
* @since 5.5.0 The `$avoid_die` parameter was renamed to `$wp_error`.
*
* @param string $comment_author_IP Comment author's IP address.
* @param string $comment_author_email Comment author's email.
* @param string $comment_date_gmt GMT date the comment was posted.
* @param bool $wp_error Whether to return a WP_Error object instead of executing
* wp_die() or die() if a comment flood is occurring.
*/
do_action(
'check_comment_flood',
$commentdata['comment_author_IP'],
$commentdata['comment_author_email'],
$commentdata['comment_date_gmt'],
$wp_error
);
/**
* Filters whether a comment is part of a comment flood.
*
* The default check is wp_check_comment_flood(). See check_comment_flood_db().
*
* @since 4.7.0
* @since 5.5.0 The `$avoid_die` parameter was renamed to `$wp_error`.
*
* @param bool $is_flood Is a comment flooding occurring? Default false.
* @param string $comment_author_IP Comment author's IP address.
* @param string $comment_author_email Comment author's email.
* @param string $comment_date_gmt GMT date the comment was posted.
* @param bool $wp_error Whether to return a WP_Error object instead of executing
* wp_die() or die() if a comment flood is occurring.
*/
$is_flood = apply_filters(
'wp_is_comment_flood',
false,
$commentdata['comment_author_IP'],
$commentdata['comment_author_email'],
$commentdata['comment_date_gmt'],
$wp_error
);
if ( $is_flood ) {
/** This filter is documented in wp-includes/comment-template.php */
$comment_flood_message = apply_filters( 'comment_flood_message', __( 'You are posting comments too quickly. Slow down.' ) );
return new WP_Error( 'comment_flood', $comment_flood_message, 429 );
}
if ( ! empty( $commentdata['user_id'] ) ) {
$user = get_userdata( $commentdata['user_id'] );
$post_author = $wpdb->get_var(
$wpdb->prepare(
"SELECT post_author FROM $wpdb->posts WHERE ID = %d LIMIT 1",
$commentdata['comment_post_ID']
)
);
}
if ( isset( $user ) && ( $commentdata['user_id'] == $post_author || $user->has_cap( 'moderate_comments' ) ) ) {
// The author and the admins get respect.
$approved = 1;
} else {
// Everyone else's comments will be checked.
if ( check_comment(
$commentdata['comment_author'],
$commentdata['comment_author_email'],
$commentdata['comment_author_url'],
$commentdata['comment_content'],
$commentdata['comment_author_IP'],
$commentdata['comment_agent'],
$commentdata['comment_type']
) ) {
$approved = 1;
} else {
$approved = 0;
}
if ( wp_check_comment_disallowed_list(
$commentdata['comment_author'],
$commentdata['comment_author_email'],
$commentdata['comment_author_url'],
$commentdata['comment_content'],
$commentdata['comment_author_IP'],
$commentdata['comment_agent']
) ) {
$approved = EMPTY_TRASH_DAYS ? 'trash' : 'spam';
}
}
/**
* Filters a comment's approval status before it is set.
*
* @since 2.1.0
* @since 4.9.0 Returning a WP_Error value from the filter will short-circuit comment insertion
* and allow skipping further processing.
*
* @param int|string|WP_Error $approved The approval status. Accepts 1, 0, 'spam', 'trash',
* or WP_Error.
* @param array $commentdata Comment data.
*/
return apply_filters( 'pre_comment_approved', $approved, $commentdata );
}
/**
* Hooks WP's native database-based comment-flood check.
*
* This wrapper maintains backward compatibility with plugins that expect to
* be able to unhook the legacy check_comment_flood_db() function from
* 'check_comment_flood' using remove_action().
*
* @since 2.3.0
* @since 4.7.0 Converted to be an add_filter() wrapper.
*/
function check_comment_flood_db() {
add_filter( 'wp_is_comment_flood', 'wp_check_comment_flood', 10, 5 );
}
/**
* Checks whether comment flooding is occurring.
*
* Won't run, if current user can manage options, so to not block
* administrators.
*
* @since 4.7.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param bool $is_flood Is a comment flooding occurring?
* @param string $ip Comment author's IP address.
* @param string $email Comment author's email address.
* @param string $date MySQL time string.
* @param bool $avoid_die When true, a disallowed comment will result in the function
* returning without executing wp_die() or die(). Default false.
* @return bool Whether comment flooding is occurring.
*/
function wp_check_comment_flood( $is_flood, $ip, $email, $date, $avoid_die = false ) {
global $wpdb;
// Another callback has declared a flood. Trust it.
if ( true === $is_flood ) {
return $is_flood;
}
// Don't throttle admins or moderators.
if ( current_user_can( 'manage_options' ) || current_user_can( 'moderate_comments' ) ) {
return false;
}
$hour_ago = gmdate( 'Y-m-d H:i:s', time() - HOUR_IN_SECONDS );
if ( is_user_logged_in() ) {
$user = get_current_user_id();
$check_column = '`user_id`';
} else {
$user = $ip;
$check_column = '`comment_author_IP`';
}
$sql = $wpdb->prepare(
"SELECT `comment_date_gmt` FROM `$wpdb->comments` WHERE `comment_date_gmt` >= %s AND ( $check_column = %s OR `comment_author_email` = %s ) ORDER BY `comment_date_gmt` DESC LIMIT 1",
$hour_ago,
$user,
$email
);
$lasttime = $wpdb->get_var( $sql );
if ( $lasttime ) {
$time_lastcomment = mysql2date( 'U', $lasttime, false );
$time_newcomment = mysql2date( 'U', $date, false );
/**
* Filters the comment flood status.
*
* @since 2.1.0
*
* @param bool $bool Whether a comment flood is occurring. Default false.
* @param int $time_lastcomment Timestamp of when the last comment was posted.
* @param int $time_newcomment Timestamp of when the new comment was posted.
*/
$flood_die = apply_filters( 'comment_flood_filter', false, $time_lastcomment, $time_newcomment );
if ( $flood_die ) {
/**
* Fires before the comment flood message is triggered.
*
* @since 1.5.0
*
* @param int $time_lastcomment Timestamp of when the last comment was posted.
* @param int $time_newcomment Timestamp of when the new comment was posted.
*/
do_action( 'comment_flood_trigger', $time_lastcomment, $time_newcomment );
if ( $avoid_die ) {
return true;
} else {
/**
* Filters the comment flood error message.
*
* @since 5.2.0
*
* @param string $comment_flood_message Comment flood error message.
*/
$comment_flood_message = apply_filters( 'comment_flood_message', __( 'You are posting comments too quickly. Slow down.' ) );
if ( wp_doing_ajax() ) {
die( $comment_flood_message );
}
wp_die( $comment_flood_message, 429 );
}
}
}
return false;
}
/**
* Separates an array of comments into an array keyed by comment_type.
*
* @since 2.7.0
*
* @param WP_Comment[] $comments Array of comments
* @return WP_Comment[] Array of comments keyed by comment_type.
*/
function separate_comments( &$comments ) {
$comments_by_type = array(
'comment' => array(),
'trackback' => array(),
'pingback' => array(),
'pings' => array(),
);
$count = count( $comments );
for ( $i = 0; $i < $count; $i++ ) {
$type = $comments[ $i ]->comment_type;
if ( empty( $type ) ) {
$type = 'comment';
}
$comments_by_type[ $type ][] = &$comments[ $i ];
if ( 'trackback' === $type || 'pingback' === $type ) {
$comments_by_type['pings'][] = &$comments[ $i ];
}
}
return $comments_by_type;
}
/**
* Calculate the total number of comment pages.
*
* @since 2.7.0
*
* @uses Walker_Comment
*
* @global WP_Query $wp_query WordPress Query object.
*
* @param WP_Comment[] $comments Optional. Array of WP_Comment objects. Defaults to `$wp_query->comments`.
* @param int $per_page Optional. Comments per page.
* @param bool $threaded Optional. Control over flat or threaded comments.
* @return int Number of comment pages.
*/
function get_comment_pages_count( $comments = null, $per_page = null, $threaded = null ) {
global $wp_query;
if ( null === $comments && null === $per_page && null === $threaded && ! empty( $wp_query->max_num_comment_pages ) ) {
return $wp_query->max_num_comment_pages;
}
if ( ( ! $comments || ! is_array( $comments ) ) && ! empty( $wp_query->comments ) ) {
$comments = $wp_query->comments;
}
if ( empty( $comments ) ) {
return 0;
}
if ( ! get_option( 'page_comments' ) ) {
return 1;
}
if ( ! isset( $per_page ) ) {
$per_page = (int) get_query_var( 'comments_per_page' );
}
if ( 0 === $per_page ) {
$per_page = (int) get_option( 'comments_per_page' );
}
if ( 0 === $per_page ) {
return 1;
}
if ( ! isset( $threaded ) ) {
$threaded = get_option( 'thread_comments' );
}
if ( $threaded ) {
$walker = new Walker_Comment;
$count = ceil( $walker->get_number_of_root_elements( $comments ) / $per_page );
} else {
$count = ceil( count( $comments ) / $per_page );
}
return $count;
}
/**
* Calculate what page number a comment will appear on for comment paging.
*
* @since 2.7.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param int $comment_ID Comment ID.
* @param array $args {
* Array of optional arguments.
*
* @type string $type Limit paginated comments to those matching a given type.
* Accepts 'comment', 'trackback', 'pingback', 'pings'
* (trackbacks and pingbacks), or 'all'. Default 'all'.
* @type int $per_page Per-page count to use when calculating pagination.
* Defaults to the value of the 'comments_per_page' option.
* @type int|string $max_depth If greater than 1, comment page will be determined
* for the top-level parent `$comment_ID`.
* Defaults to the value of the 'thread_comments_depth' option.
* } *
* @return int|null Comment page number or null on error.
*/
function get_page_of_comment( $comment_ID, $args = array() ) {
global $wpdb;
$page = null;
$comment = get_comment( $comment_ID );
if ( ! $comment ) {
return;
}
$defaults = array(
'type' => 'all',
'page' => '',
'per_page' => '',
'max_depth' => '',
);
$args = wp_parse_args( $args, $defaults );
$original_args = $args;
// Order of precedence: 1. `$args['per_page']`, 2. 'comments_per_page' query_var, 3. 'comments_per_page' option.
if ( get_option( 'page_comments' ) ) {
if ( '' === $args['per_page'] ) {
$args['per_page'] = get_query_var( 'comments_per_page' );
}
if ( '' === $args['per_page'] ) {
$args['per_page'] = get_option( 'comments_per_page' );
}
}
if ( empty( $args['per_page'] ) ) {
$args['per_page'] = 0;
$args['page'] = 0;
}
if ( $args['per_page'] < 1 ) {
$page = 1;
}
if ( null === $page ) {
if ( '' === $args['max_depth'] ) {
if ( get_option( 'thread_comments' ) ) {
$args['max_depth'] = get_option( 'thread_comments_depth' );
} else {
$args['max_depth'] = -1;
}
}
// Find this comment's top-level parent if threading is enabled.
if ( $args['max_depth'] > 1 && 0 != $comment->comment_parent ) {
return get_page_of_comment( $comment->comment_parent, $args );
}
$comment_args = array(
'type' => $args['type'],
'post_id' => $comment->comment_post_ID,
'fields' => 'ids',
'count' => true,
'status' => 'approve',
'parent' => 0,
'date_query' => array(
array(
'column' => "$wpdb->comments.comment_date_gmt",
'before' => $comment->comment_date_gmt,
),
),
);
if ( is_user_logged_in() ) {
$comment_args['include_unapproved'] = array( get_current_user_id() );
} else {
$unapproved_email = wp_get_unapproved_comment_author_email();
if ( $unapproved_email ) {
$comment_args['include_unapproved'] = array( $unapproved_email );
}
}
/**
* Filters the arguments used to query comments in get_page_of_comment().
*
* @since 5.5.0
*
* @see WP_Comment_Query::__construct()
*
* @param array $comment_args {
* Array of WP_Comment_Query arguments.
*
* @type string $type Limit paginated comments to those matching a given type.
* Accepts 'comment', 'trackback', 'pingback', 'pings'
* (trackbacks and pingbacks), or 'all'. Default 'all'.
* @type int $post_id ID of the post.
* @type string $fields Comment fields to return.
* @type bool $count Whether to return a comment count (true) or array
* of comment objects (false).
* @type string $status Comment status.
* @type int $parent Parent ID of comment to retrieve children of.
* @type array $date_query Date query clauses to limit comments by. See WP_Date_Query.
* @type array $include_unapproved Array of IDs or email addresses whose unapproved comments
* will be included in paginated comments.
* }
*/
$comment_args = apply_filters( 'get_page_of_comment_query_args', $comment_args );
$comment_query = new WP_Comment_Query();
$older_comment_count = $comment_query->query( $comment_args );
// No older comments? Then it's page #1.
if ( 0 == $older_comment_count ) {
$page = 1;
// Divide comments older than this one by comments per page to get this comment's page number.
} else {
$page = ceil( ( $older_comment_count + 1 ) / $args['per_page'] );
}
}
/**
* Filters the calculated page on which a comment appears.
*
* @since 4.4.0
* @since 4.7.0 Introduced the `$comment_ID` parameter.
*
* @param int $page Comment page.
* @param array $args {
* Arguments used to calculate pagination. These include arguments auto-detected by the function,
* based on query vars, system settings, etc. For pristine arguments passed to the function,
* see `$original_args`.
*
* @type string $type Type of comments to count.
* @type int $page Calculated current page.
* @type int $per_page Calculated number of comments per page.
* @type int $max_depth Maximum comment threading depth allowed.
* }
* @param array $original_args {
* Array of arguments passed to the function. Some or all of these may not be set.
*
* @type string $type Type of comments to count.
* @type int $page Current comment page.
* @type int $per_page Number of comments per page.
* @type int $max_depth Maximum comment threading depth allowed.
* }
* @param int $comment_ID ID of the comment.
*/
return apply_filters( 'get_page_of_comment', (int) $page, $args, $original_args, $comment_ID );
}
/**
* Retrieves the maximum character lengths for the comment form fields.
*
* @since 4.5.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @return int[] Array of maximum lengths keyed by field name.
*/
function wp_get_comment_fields_max_lengths() {
global $wpdb;
$lengths = array(
'comment_author' => 245,
'comment_author_email' => 100,
'comment_author_url' => 200,
'comment_content' => 65525,
);
if ( $wpdb->is_mysql ) {
foreach ( $lengths as $column => $length ) {
$col_length = $wpdb->get_col_length( $wpdb->comments, $column );
$max_length = 0;
// No point if we can't get the DB column lengths.
if ( is_wp_error( $col_length ) ) {
break;
}
if ( ! is_array( $col_length ) && (int) $col_length > 0 ) {
$max_length = (int) $col_length;
} elseif ( is_array( $col_length ) && isset( $col_length['length'] ) && (int) $col_length['length'] > 0 ) {
$max_length = (int) $col_length['length'];
if ( ! empty( $col_length['type'] ) && 'byte' === $col_length['type'] ) {
$max_length = $max_length - 10;
}
}
if ( $max_length > 0 ) {
$lengths[ $column ] = $max_length;
}
}
}
/**
* Filters the lengths for the comment form fields.
*
* @since 4.5.0
*
* @param int[] $lengths Array of maximum lengths keyed by field name.
*/
return apply_filters( 'wp_get_comment_fields_max_lengths', $lengths );
}
/**
* Compares the lengths of comment data against the maximum character limits.
*
* @since 4.7.0
*
* @param array $comment_data Array of arguments for inserting a comment.
* @return WP_Error|true WP_Error when a comment field exceeds the limit,
* otherwise true.
*/
function wp_check_comment_data_max_lengths( $comment_data ) {
$max_lengths = wp_get_comment_fields_max_lengths();
if ( isset( $comment_data['comment_author'] ) && mb_strlen( $comment_data['comment_author'], '8bit' ) > $max_lengths['comment_author'] ) {
return new WP_Error( 'comment_author_column_length', __( 'Error: Your name is too long.' ), 200 );
}
if ( isset( $comment_data['comment_author_email'] ) && strlen( $comment_data['comment_author_email'] ) > $max_lengths['comment_author_email'] ) {
return new WP_Error( 'comment_author_email_column_length', __( 'Error: Your email address is too long.' ), 200 );
}
if ( isset( $comment_data['comment_author_url'] ) && strlen( $comment_data['comment_author_url'] ) > $max_lengths['comment_author_url'] ) {
return new WP_Error( 'comment_author_url_column_length', __( 'Error: Your URL is too long.' ), 200 );
}
if ( isset( $comment_data['comment_content'] ) && mb_strlen( $comment_data['comment_content'], '8bit' ) > $max_lengths['comment_content'] ) {
return new WP_Error( 'comment_content_column_length', __( 'Error: Your comment is too long.' ), 200 );
}
return true;
}
/**
* Checks if a comment contains disallowed characters or words.
*
* @since 5.5.0
*
* @param string $author The author of the comment
* @param string $email The email of the comment
* @param string $url The url used in the comment
* @param string $comment The comment content
* @param string $user_ip The comment author's IP address
* @param string $user_agent The author's browser user agent
* @return bool True if comment contains disallowed content, false if comment does not
*/
function wp_check_comment_disallowed_list( $author, $email, $url, $comment, $user_ip, $user_agent ) {
/**
* Fires before the comment is tested for disallowed characters or words.
*
* @since 1.5.0
* @deprecated 5.5.0 Use {@see 'wp_check_comment_disallowed_list'} instead.
*
* @param string $author Comment author.
* @param string $email Comment author's email.
* @param string $url Comment author's URL.
* @param string $comment Comment content.
* @param string $user_ip Comment author's IP address.
* @param string $user_agent Comment author's browser user agent.
*/
do_action_deprecated(
'wp_blacklist_check',
array( $author, $email, $url, $comment, $user_ip, $user_agent ),
'5.5.0',
'wp_check_comment_disallowed_list',
__( 'Please consider writing more inclusive code.' )
);
/**
* Fires before the comment is tested for disallowed characters or words.
*
* @since 5.5.0
*
* @param string $author Comment author.
* @param string $email Comment author's email.
* @param string $url Comment author's URL.
* @param string $comment Comment content.
* @param string $user_ip Comment author's IP address.
* @param string $user_agent Comment author's browser user agent.
*/
do_action( 'wp_check_comment_disallowed_list', $author, $email, $url, $comment, $user_ip, $user_agent );
$mod_keys = trim( get_option( 'disallowed_keys' ) );
if ( '' === $mod_keys ) {
return false; // If moderation keys are empty.
}
// Ensure HTML tags are not being used to bypass the list of disallowed characters and words.
$comment_without_html = wp_strip_all_tags( $comment );
$words = explode( "\n", $mod_keys );
foreach ( (array) $words as $word ) {
$word = trim( $word );
// Skip empty lines.
if ( empty( $word ) ) {
continue; }
// Do some escaping magic so that '#' chars
// in the spam words don't break things:
$word = preg_quote( $word, '#' );
$pattern = "#$word#i";
if ( preg_match( $pattern, $author )
|| preg_match( $pattern, $email )
|| preg_match( $pattern, $url )
|| preg_match( $pattern, $comment )
|| preg_match( $pattern, $comment_without_html )
|| preg_match( $pattern, $user_ip )
|| preg_match( $pattern, $user_agent )
) {
return true;
}
}
return false;
}
/**
* Retrieves the total comment counts for the whole site or a single post.
*
* The comment stats are cached and then retrieved, if they already exist in the
* cache.
*
* @see get_comment_count() Which handles fetching the live comment counts.
*
* @since 2.5.0
*
* @param int $post_id Optional. Restrict the comment counts to the given post. Default 0, which indicates that
* comment counts for the whole site will be retrieved.
* @return stdClass {
* The number of comments keyed by their status.
*
* @type int $approved The number of approved comments.
* @type int $moderated The number of comments awaiting moderation (a.k.a. pending).
* @type int $spam The number of spam comments.
* @type int $trash The number of trashed comments.
* @type int $post-trashed The number of comments for posts that are in the trash.
* @type int $total_comments The total number of non-trashed comments, including spam.
* @type int $all The total number of pending or approved comments.
* }
*/
function wp_count_comments( $post_id = 0 ) {
$post_id = (int) $post_id;
/**
* Filters the comments count for a given post or the whole site.
*
* @since 2.7.0
*
* @param array|stdClass $count An empty array or an object containing comment counts.
* @param int $post_id The post ID. Can be 0 to represent the whole site.
*/
$filtered = apply_filters( 'wp_count_comments', array(), $post_id );
if ( ! empty( $filtered ) ) {
return $filtered;
}
$count = wp_cache_get( "comments-{$post_id}", 'counts' );
if ( false !== $count ) {
return $count;
}
$stats = get_comment_count( $post_id );
$stats['moderated'] = $stats['awaiting_moderation'];
unset( $stats['awaiting_moderation'] );
$stats_object = (object) $stats;
wp_cache_set( "comments-{$post_id}", $stats_object, 'counts' );
return $stats_object;
}
/**
* Trashes or deletes a comment.
*
* The comment is moved to Trash instead of permanently deleted unless Trash is
* disabled, item is already in the Trash, or $force_delete is true.
*
* The post comment count will be updated if the comment was approved and has a
* post ID available.
*
* @since 2.0.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param int|WP_Comment $comment_id Comment ID or WP_Comment object.
* @param bool $force_delete Whether to bypass Trash and force deletion. Default false.
* @return bool True on success, false on failure.
*/
function wp_delete_comment( $comment_id, $force_delete = false ) {
global $wpdb;
$comment = get_comment( $comment_id );
if ( ! $comment ) {
return false;
}
if ( ! $force_delete && EMPTY_TRASH_DAYS && ! in_array( wp_get_comment_status( $comment ), array( 'trash', 'spam' ), true ) ) {
return wp_trash_comment( $comment_id );
}
/**
* Fires immediately before a comment is deleted from the database.
*
* @since 1.2.0
* @since 4.9.0 Added the `$comment` parameter.
*
* @param int $comment_id The comment ID.
* @param WP_Comment $comment The comment to be deleted.
*/
do_action( 'delete_comment', $comment->comment_ID, $comment );
// Move children up a level.
$children = $wpdb->get_col( $wpdb->prepare( "SELECT comment_ID FROM $wpdb->comments WHERE comment_parent = %d", $comment->comment_ID ) );
if ( ! empty( $children ) ) {
$wpdb->update( $wpdb->comments, array( 'comment_parent' => $comment->comment_parent ), array( 'comment_parent' => $comment->comment_ID ) );
clean_comment_cache( $children );
}
// Delete metadata.
$meta_ids = $wpdb->get_col( $wpdb->prepare( "SELECT meta_id FROM $wpdb->commentmeta WHERE comment_id = %d", $comment->comment_ID ) );
foreach ( $meta_ids as $mid ) {
delete_metadata_by_mid( 'comment', $mid );
}
if ( ! $wpdb->delete( $wpdb->comments, array( 'comment_ID' => $comment->comment_ID ) ) ) {
return false;
}
/**
* Fires immediately after a comment is deleted from the database.
*
* @since 2.9.0
* @since 4.9.0 Added the `$comment` parameter.
*
* @param int $comment_id The comment ID.
* @param WP_Comment $comment The deleted comment.
*/
do_action( 'deleted_comment', $comment->comment_ID, $comment );
$post_id = $comment->comment_post_ID;
if ( $post_id && 1 == $comment->comment_approved ) {
wp_update_comment_count( $post_id );
}
clean_comment_cache( $comment->comment_ID );
/** This action is documented in wp-includes/comment.php */
do_action( 'wp_set_comment_status', $comment->comment_ID, 'delete' );
wp_transition_comment_status( 'delete', $comment->comment_approved, $comment );
return true;
}
/**
* Moves a comment to the Trash
*
* If Trash is disabled, comment is permanently deleted.
*
* @since 2.9.0
*
* @param int|WP_Comment $comment_id Comment ID or WP_Comment object.
* @return bool True on success, false on failure.
*/
function wp_trash_comment( $comment_id ) {
if ( ! EMPTY_TRASH_DAYS ) {
return wp_delete_comment( $comment_id, true );
}
$comment = get_comment( $comment_id );
if ( ! $comment ) {
return false;
}
/**
* Fires immediately before a comment is sent to the Trash.
*
* @since 2.9.0
* @since 4.9.0 Added the `$comment` parameter.
*
* @param int $comment_id The comment ID.
* @param WP_Comment $comment The comment to be trashed.
*/
do_action( 'trash_comment', $comment->comment_ID, $comment );
if ( wp_set_comment_status( $comment, 'trash' ) ) {
delete_comment_meta( $comment->comment_ID, '_wp_trash_meta_status' );
delete_comment_meta( $comment->comment_ID, '_wp_trash_meta_time' );
add_comment_meta( $comment->comment_ID, '_wp_trash_meta_status', $comment->comment_approved );
add_comment_meta( $comment->comment_ID, '_wp_trash_meta_time', time() );
/**
* Fires immediately after a comment is sent to Trash.
*
* @since 2.9.0
* @since 4.9.0 Added the `$comment` parameter.
*
* @param int $comment_id The comment ID.
* @param WP_Comment $comment The trashed comment.
*/
do_action( 'trashed_comment', $comment->comment_ID, $comment );
return true;
}
return false;
}
/**
* Removes a comment from the Trash
*
* @since 2.9.0
*
* @param int|WP_Comment $comment_id Comment ID or WP_Comment object.
* @return bool True on success, false on failure.
*/
function wp_untrash_comment( $comment_id ) {
$comment = get_comment( $comment_id );
if ( ! $comment ) {
return false;
}
/**
* Fires immediately before a comment is restored from the Trash.
*
* @since 2.9.0
* @since 4.9.0 Added the `$comment` parameter.
*
* @param int $comment_id The comment ID.
* @param WP_Comment $comment The comment to be untrashed.
*/
do_action( 'untrash_comment', $comment->comment_ID, $comment );
$status = (string) get_comment_meta( $comment->comment_ID, '_wp_trash_meta_status', true );
if ( empty( $status ) ) {
$status = '0';
}
if ( wp_set_comment_status( $comment, $status ) ) {
delete_comment_meta( $comment->comment_ID, '_wp_trash_meta_time' );
delete_comment_meta( $comment->comment_ID, '_wp_trash_meta_status' );
/**
* Fires immediately after a comment is restored from the Trash.
*
* @since 2.9.0
* @since 4.9.0 Added the `$comment` parameter.
*
* @param int $comment_id The comment ID.
* @param WP_Comment $comment The untrashed comment.
*/
do_action( 'untrashed_comment', $comment->comment_ID, $comment );
return true;
}
return false;
}
/**
* Marks a comment as Spam
*
* @since 2.9.0
*
* @param int|WP_Comment $comment_id Comment ID or WP_Comment object.
* @return bool True on success, false on failure.
*/
function wp_spam_comment( $comment_id ) {
$comment = get_comment( $comment_id );
if ( ! $comment ) {
return false;
}
/**
* Fires immediately before a comment is marked as Spam.
*
* @since 2.9.0
* @since 4.9.0 Added the `$comment` parameter.
*
* @param int $comment_id The comment ID.
* @param WP_Comment $comment The comment to be marked as spam.
*/
do_action( 'spam_comment', $comment->comment_ID, $comment );
if ( wp_set_comment_status( $comment, 'spam' ) ) {
delete_comment_meta( $comment->comment_ID, '_wp_trash_meta_status' );
delete_comment_meta( $comment->comment_ID, '_wp_trash_meta_time' );
add_comment_meta( $comment->comment_ID, '_wp_trash_meta_status', $comment->comment_approved );
add_comment_meta( $comment->comment_ID, '_wp_trash_meta_time', time() );
/**
* Fires immediately after a comment is marked as Spam.
*
* @since 2.9.0
* @since 4.9.0 Added the `$comment` parameter.
*
* @param int $comment_id The comment ID.
* @param WP_Comment $comment The comment marked as spam.
*/
do_action( 'spammed_comment', $comment->comment_ID, $comment );
return true;
}
return false;
}
/**
* Removes a comment from the Spam
*
* @since 2.9.0
*
* @param int|WP_Comment $comment_id Comment ID or WP_Comment object.
* @return bool True on success, false on failure.
*/
function wp_unspam_comment( $comment_id ) {
$comment = get_comment( $comment_id );
if ( ! $comment ) {
return false;
}
/**
* Fires immediately before a comment is unmarked as Spam.
*
* @since 2.9.0
* @since 4.9.0 Added the `$comment` parameter.
*
* @param int $comment_id The comment ID.
* @param WP_Comment $comment The comment to be unmarked as spam.
*/
do_action( 'unspam_comment', $comment->comment_ID, $comment );
$status = (string) get_comment_meta( $comment->comment_ID, '_wp_trash_meta_status', true );
if ( empty( $status ) ) {
$status = '0';
}
if ( wp_set_comment_status( $comment, $status ) ) {
delete_comment_meta( $comment->comment_ID, '_wp_trash_meta_status' );
delete_comment_meta( $comment->comment_ID, '_wp_trash_meta_time' );
/**
* Fires immediately after a comment is unmarked as Spam.
*
* @since 2.9.0
* @since 4.9.0 Added the `$comment` parameter.
*
* @param int $comment_id The comment ID.
* @param WP_Comment $comment The comment unmarked as spam.
*/
do_action( 'unspammed_comment', $comment->comment_ID, $comment );
return true;
}
return false;
}
/**
* The status of a comment by ID.
*
* @since 1.0.0
*
* @param int|WP_Comment $comment_id Comment ID or WP_Comment object
* @return string|false Status might be 'trash', 'approved', 'unapproved', 'spam'. False on failure.
*/
function wp_get_comment_status( $comment_id ) {
$comment = get_comment( $comment_id );
if ( ! $comment ) {
return false;
}
$approved = $comment->comment_approved;
if ( null == $approved ) {
return false;
} elseif ( '1' == $approved ) {
return 'approved';
} elseif ( '0' == $approved ) {
return 'unapproved';
} elseif ( 'spam' === $approved ) {
return 'spam';
} elseif ( 'trash' === $approved ) {
return 'trash';
} else {
return false;
}
}
/**
* Call hooks for when a comment status transition occurs.
*
* Calls hooks for comment status transitions. If the new comment status is not the same
* as the previous comment status, then two hooks will be ran, the first is
* {@see 'transition_comment_status'} with new status, old status, and comment data.
* The next action called is {@see 'comment_$old_status_to_$new_status'}. It has
* the comment data.
*
* The final action will run whether or not the comment statuses are the same.
* The action is named {@see 'comment_$new_status_$comment->comment_type'}.
*
* @since 2.7.0
*
* @param string $new_status New comment status.
* @param string $old_status Previous comment status.
* @param WP_Comment $comment Comment object.
*/
function wp_transition_comment_status( $new_status, $old_status, $comment ) {
/*
* Translate raw statuses to human-readable formats for the hooks.
* This is not a complete list of comment status, it's only the ones
* that need to be renamed.
*/
$comment_statuses = array(
0 => 'unapproved',
'hold' => 'unapproved', // wp_set_comment_status() uses "hold".
1 => 'approved',
'approve' => 'approved', // wp_set_comment_status() uses "approve".
);
if ( isset( $comment_statuses[ $new_status ] ) ) {
$new_status = $comment_statuses[ $new_status ];
}
if ( isset( $comment_statuses[ $old_status ] ) ) {
$old_status = $comment_statuses[ $old_status ];
}
// Call the hooks.
if ( $new_status != $old_status ) {
/**
* Fires when the comment status is in transition.
*
* @since 2.7.0
*
* @param int|string $new_status The new comment status.
* @param int|string $old_status The old comment status.
* @param WP_Comment $comment Comment object.
*/
do_action( 'transition_comment_status', $new_status, $old_status, $comment );
/**
* Fires when the comment status is in transition from one specific status to another.
*
* The dynamic portions of the hook name, `$old_status`, and `$new_status`,
* refer to the old and new comment statuses, respectively.
*
* @since 2.7.0
*
* @param WP_Comment $comment Comment object.
*/
do_action( "comment_{$old_status}_to_{$new_status}", $comment );
}
/**
* Fires when the status of a specific comment type is in transition.
*
* The dynamic portions of the hook name, `$new_status`, and `$comment->comment_type`,
* refer to the new comment status, and the type of comment, respectively.
*
* Typical comment types include an empty string (standard comment), 'pingback',
* or 'trackback'.
*
* @since 2.7.0
*
* @param int $comment_ID The comment ID.
* @param WP_Comment $comment Comment object.
*/
do_action( "comment_{$new_status}_{$comment->comment_type}", $comment->comment_ID, $comment );
}
/**
* Clear the lastcommentmodified cached value when a comment status is changed.
*
* Deletes the lastcommentmodified cache key when a comment enters or leaves
* 'approved' status.
*
* @since 4.7.0
* @access private
*
* @param string $new_status The new comment status.
* @param string $old_status The old comment status.
*/
function _clear_modified_cache_on_transition_comment_status( $new_status, $old_status ) {
if ( 'approved' === $new_status || 'approved' === $old_status ) {
foreach ( array( 'server', 'gmt', 'blog' ) as $timezone ) {
wp_cache_delete( "lastcommentmodified:$timezone", 'timeinfo' );
}
}
}
/**
* Get current commenter's name, email, and URL.
*
* Expects cookies content to already be sanitized. User of this function might
* wish to recheck the returned array for validity.
*
* @see sanitize_comment_cookies() Use to sanitize cookies
*
* @since 2.0.4
*
* @return array {
* An array of current commenter variables.
*
* @type string $comment_author The name of the current commenter, or an empty string.
* @type string $comment_author_email The email address of the current commenter, or an empty string.
* @type string $comment_author_url The URL address of the current commenter, or an empty string.
* }
*/
function wp_get_current_commenter() {
// Cookies should already be sanitized.
$comment_author = '';
if ( isset( $_COOKIE[ 'comment_author_' . COOKIEHASH ] ) ) {
$comment_author = $_COOKIE[ 'comment_author_' . COOKIEHASH ];
}
$comment_author_email = '';
if ( isset( $_COOKIE[ 'comment_author_email_' . COOKIEHASH ] ) ) {
$comment_author_email = $_COOKIE[ 'comment_author_email_' . COOKIEHASH ];
}
$comment_author_url = '';
if ( isset( $_COOKIE[ 'comment_author_url_' . COOKIEHASH ] ) ) {
$comment_author_url = $_COOKIE[ 'comment_author_url_' . COOKIEHASH ];
}
/**
* Filters the current commenter's name, email, and URL.
*
* @since 3.1.0
*
* @param array $comment_author_data {
* An array of current commenter variables.
*
* @type string $comment_author The name of the current commenter, or an empty string.
* @type string $comment_author_email The email address of the current commenter, or an empty string.
* @type string $comment_author_url The URL address of the current commenter, or an empty string.
* }
*/
return apply_filters( 'wp_get_current_commenter', compact( 'comment_author', 'comment_author_email', 'comment_author_url' ) );
}
/**
* Get unapproved comment author's email.
*
* Used to allow the commenter to see their pending comment.
*
* @since 5.1.0
* @since 5.7.0 The window within which the author email for an unapproved comment
* can be retrieved was extended to 10 minutes.
*
* @return string The unapproved comment author's email (when supplied).
*/
function wp_get_unapproved_comment_author_email() {
$commenter_email = '';
if ( ! empty( $_GET['unapproved'] ) && ! empty( $_GET['moderation-hash'] ) ) {
$comment_id = (int) $_GET['unapproved'];
$comment = get_comment( $comment_id );
if ( $comment && hash_equals( $_GET['moderation-hash'], wp_hash( $comment->comment_date_gmt ) ) ) {
// The comment will only be viewable by the comment author for 10 minutes.
$comment_preview_expires = strtotime( $comment->comment_date_gmt . '+10 minutes' );
if ( time() < $comment_preview_expires ) {
$commenter_email = $comment->comment_author_email;
}
}
}
if ( ! $commenter_email ) {
$commenter = wp_get_current_commenter();
$commenter_email = $commenter['comment_author_email'];
}
return $commenter_email;
}
/**
* Inserts a comment into the database.
*
* @since 2.0.0
* @since 4.4.0 Introduced the `$comment_meta` argument.
* @since 5.5.0 Default value for `$comment_type` argument changed to `comment`.
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param array $commentdata {
* Array of arguments for inserting a new comment.
*
* @type string $comment_agent The HTTP user agent of the `$comment_author` when
* the comment was submitted. Default empty.
* @type int|string $comment_approved Whether the comment has been approved. Default 1.
* @type string $comment_author The name of the author of the comment. Default empty.
* @type string $comment_author_email The email address of the `$comment_author`. Default empty.
* @type string $comment_author_IP The IP address of the `$comment_author`. Default empty.
* @type string $comment_author_url The URL address of the `$comment_author`. Default empty.
* @type string $comment_content The content of the comment. Default empty.
* @type string $comment_date The date the comment was submitted. To set the date
* manually, `$comment_date_gmt` must also be specified.
* Default is the current time.
* @type string $comment_date_gmt The date the comment was submitted in the GMT timezone.
* Default is `$comment_date` in the site's GMT timezone.
* @type int $comment_karma The karma of the comment. Default 0.
* @type int $comment_parent ID of this comment's parent, if any. Default 0.
* @type int $comment_post_ID ID of the post that relates to the comment, if any.
* Default 0.
* @type string $comment_type Comment type. Default 'comment'.
* @type array $comment_meta Optional. Array of key/value pairs to be stored in commentmeta for the
* new comment.
* @type int $user_id ID of the user who submitted the comment. Default 0.
* }
* @return int|false The new comment's ID on success, false on failure.
*/
function wp_insert_comment( $commentdata ) {
global $wpdb;
$data = wp_unslash( $commentdata );
$comment_author = ! isset( $data['comment_author'] ) ? '' : $data['comment_author'];
$comment_author_email = ! isset( $data['comment_author_email'] ) ? '' : $data['comment_author_email'];
$comment_author_url = ! isset( $data['comment_author_url'] ) ? '' : $data['comment_author_url'];
$comment_author_IP = ! isset( $data['comment_author_IP'] ) ? '' : $data['comment_author_IP'];
$comment_date = ! isset( $data['comment_date'] ) ? current_time( 'mysql' ) : $data['comment_date'];
$comment_date_gmt = ! isset( $data['comment_date_gmt'] ) ? get_gmt_from_date( $comment_date ) : $data['comment_date_gmt'];
$comment_post_ID = ! isset( $data['comment_post_ID'] ) ? 0 : $data['comment_post_ID'];
$comment_content = ! isset( $data['comment_content'] ) ? '' : $data['comment_content'];
$comment_karma = ! isset( $data['comment_karma'] ) ? 0 : $data['comment_karma'];
$comment_approved = ! isset( $data['comment_approved'] ) ? 1 : $data['comment_approved'];
$comment_agent = ! isset( $data['comment_agent'] ) ? '' : $data['comment_agent'];
$comment_type = empty( $data['comment_type'] ) ? 'comment' : $data['comment_type'];
$comment_parent = ! isset( $data['comment_parent'] ) ? 0 : $data['comment_parent'];
$user_id = ! isset( $data['user_id'] ) ? 0 : $data['user_id'];
$compacted = compact( 'comment_post_ID', 'comment_author', 'comment_author_email', 'comment_author_url', 'comment_author_IP', 'comment_date', 'comment_date_gmt', 'comment_content', 'comment_karma', 'comment_approved', 'comment_agent', 'comment_type', 'comment_parent', 'user_id' );
if ( ! $wpdb->insert( $wpdb->comments, $compacted ) ) {
return false;
}
$id = (int) $wpdb->insert_id;
if ( 1 == $comment_approved ) {
wp_update_comment_count( $comment_post_ID );
foreach ( array( 'server', 'gmt', 'blog' ) as $timezone ) {
wp_cache_delete( "lastcommentmodified:$timezone", 'timeinfo' );
}
}
clean_comment_cache( $id );
$comment = get_comment( $id );
// If metadata is provided, store it.
if ( isset( $commentdata['comment_meta'] ) && is_array( $commentdata['comment_meta'] ) ) {
foreach ( $commentdata['comment_meta'] as $meta_key => $meta_value ) {
add_comment_meta( $comment->comment_ID, $meta_key, $meta_value, true );
}
}
/**
* Fires immediately after a comment is inserted into the database.
*
* @since 2.8.0
*
* @param int $id The comment ID.
* @param WP_Comment $comment Comment object.
*/
do_action( 'wp_insert_comment', $id, $comment );
return $id;
}
/**
* Filters and sanitizes comment data.
*
* Sets the comment data 'filtered' field to true when finished. This can be
* checked as to whether the comment should be filtered and to keep from
* filtering the same comment more than once.
*
* @since 2.0.0
*
* @param array $commentdata Contains information on the comment.
* @return array Parsed comment information.
*/
function wp_filter_comment( $commentdata ) {
if ( isset( $commentdata['user_ID'] ) ) {
/**
* Filters the comment author's user ID before it is set.
*
* The first time this filter is evaluated, 'user_ID' is checked
* (for back-compat), followed by the standard 'user_id' value.
*
* @since 1.5.0
*
* @param int $user_ID The comment author's user ID.
*/
$commentdata['user_id'] = apply_filters( 'pre_user_id', $commentdata['user_ID'] );
} elseif ( isset( $commentdata['user_id'] ) ) {
/** This filter is documented in wp-includes/comment.php */
$commentdata['user_id'] = apply_filters( 'pre_user_id', $commentdata['user_id'] );
}
/**
* Filters the comment author's browser user agent before it is set.
*
* @since 1.5.0
*
* @param string $comment_agent The comment author's browser user agent.
*/
$commentdata['comment_agent'] = apply_filters( 'pre_comment_user_agent', ( isset( $commentdata['comment_agent'] ) ? $commentdata['comment_agent'] : '' ) );
/** This filter is documented in wp-includes/comment.php */
$commentdata['comment_author'] = apply_filters( 'pre_comment_author_name', $commentdata['comment_author'] );
/**
* Filters the comment content before it is set.
*
* @since 1.5.0
*
* @param string $comment_content The comment content.
*/
$commentdata['comment_content'] = apply_filters( 'pre_comment_content', $commentdata['comment_content'] );
/**
* Filters the comment author's IP address before it is set.
*
* @since 1.5.0
*
* @param string $comment_author_ip The comment author's IP address.
*/
$commentdata['comment_author_IP'] = apply_filters( 'pre_comment_user_ip', $commentdata['comment_author_IP'] );
/** This filter is documented in wp-includes/comment.php */
$commentdata['comment_author_url'] = apply_filters( 'pre_comment_author_url', $commentdata['comment_author_url'] );
/** This filter is documented in wp-includes/comment.php */
$commentdata['comment_author_email'] = apply_filters( 'pre_comment_author_email', $commentdata['comment_author_email'] );
$commentdata['filtered'] = true;
return $commentdata;
}
/**
* Whether a comment should be blocked because of comment flood.
*
* @since 2.1.0
*
* @param bool $block Whether plugin has already blocked comment.
* @param int $time_lastcomment Timestamp for last comment.
* @param int $time_newcomment Timestamp for new comment.
* @return bool Whether comment should be blocked.
*/
function wp_throttle_comment_flood( $block, $time_lastcomment, $time_newcomment ) {
if ( $block ) { // A plugin has already blocked... we'll let that decision stand.
return $block;
}
if ( ( $time_newcomment - $time_lastcomment ) < 15 ) {
return true;
}
return false;
}
/**
* Adds a new comment to the database.
*
* Filters new comment to ensure that the fields are sanitized and valid before
* inserting comment into database. Calls {@see 'comment_post'} action with comment ID
* and whether comment is approved by WordPress. Also has {@see 'preprocess_comment'}
* filter for processing the comment data before the function handles it.
*
* We use `REMOTE_ADDR` here directly. If you are behind a proxy, you should ensure
* that it is properly set, such as in wp-config.php, for your environment.
*
* See {@link https://core.trac.wordpress.org/ticket/9235}
*
* @since 1.5.0
* @since 4.3.0 Introduced the `comment_agent` and `comment_author_IP` arguments.
* @since 4.7.0 The `$avoid_die` parameter was added, allowing the function
* to return a WP_Error object instead of dying.
* @since 5.5.0 The `$avoid_die` parameter was renamed to `$wp_error`.
* @since 5.5.0 Introduced the `comment_type` argument.
*
* @see wp_insert_comment()
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param array $commentdata {
* Comment data.
*
* @type string $comment_author The name of the comment author.
* @type string $comment_author_email The comment author email address.
* @type string $comment_author_url The comment author URL.
* @type string $comment_content The content of the comment.
* @type string $comment_date The date the comment was submitted. Default is the current time.
* @type string $comment_date_gmt The date the comment was submitted in the GMT timezone.
* Default is `$comment_date` in the GMT timezone.
* @type string $comment_type Comment type. Default 'comment'.
* @type int $comment_parent The ID of this comment's parent, if any. Default 0.
* @type int $comment_post_ID The ID of the post that relates to the comment.
* @type int $user_id The ID of the user who submitted the comment. Default 0.
* @type int $user_ID Kept for backward-compatibility. Use `$user_id` instead.
* @type string $comment_agent Comment author user agent. Default is the value of 'HTTP_USER_AGENT'
* in the `$_SERVER` superglobal sent in the original request.
* @type string $comment_author_IP Comment author IP address in IPv4 format. Default is the value of
* 'REMOTE_ADDR' in the `$_SERVER` superglobal sent in the original request.
* }
* @param bool $wp_error Should errors be returned as WP_Error objects instead of
* executing wp_die()? Default false.
* @return int|false|WP_Error The ID of the comment on success, false or WP_Error on failure.
*/
function wp_new_comment( $commentdata, $wp_error = false ) {
global $wpdb;
if ( isset( $commentdata['user_ID'] ) ) {
$commentdata['user_ID'] = (int) $commentdata['user_ID'];
$commentdata['user_id'] = $commentdata['user_ID'];
}
$prefiltered_user_id = ( isset( $commentdata['user_id'] ) ) ? (int) $commentdata['user_id'] : 0;
if ( ! isset( $commentdata['comment_author_IP'] ) ) {
$commentdata['comment_author_IP'] = $_SERVER['REMOTE_ADDR'];
}
if ( ! isset( $commentdata['comment_agent'] ) ) {
$commentdata['comment_agent'] = isset( $_SERVER['HTTP_USER_AGENT'] ) ? $_SERVER['HTTP_USER_AGENT'] : '';
}
/**
* Filters a comment's data before it is sanitized and inserted into the database.
*
* @since 1.5.0
* @since 5.6.0 Comment data includes the `comment_agent` and `comment_author_IP` values.
*
* @param array $commentdata Comment data.
*/
$commentdata = apply_filters( 'preprocess_comment', $commentdata );
$commentdata['comment_post_ID'] = (int) $commentdata['comment_post_ID'];
if ( isset( $commentdata['user_ID'] ) && $prefiltered_user_id !== (int) $commentdata['user_ID'] ) {
$commentdata['user_ID'] = (int) $commentdata['user_ID'];
$commentdata['user_id'] = $commentdata['user_ID'];
} elseif ( isset( $commentdata['user_id'] ) ) {
$commentdata['user_id'] = (int) $commentdata['user_id'];
}
$commentdata['comment_parent'] = isset( $commentdata['comment_parent'] ) ? absint( $commentdata['comment_parent'] ) : 0;
$parent_status = ( $commentdata['comment_parent'] > 0 ) ? wp_get_comment_status( $commentdata['comment_parent'] ) : '';
$commentdata['comment_parent'] = ( 'approved' === $parent_status || 'unapproved' === $parent_status ) ? $commentdata['comment_parent'] : 0;
$commentdata['comment_author_IP'] = preg_replace( '/[^0-9a-fA-F:., ]/', '', $commentdata['comment_author_IP'] );
$commentdata['comment_agent'] = substr( $commentdata['comment_agent'], 0, 254 );
if ( empty( $commentdata['comment_date'] ) ) {
$commentdata['comment_date'] = current_time( 'mysql' );
}
if ( empty( $commentdata['comment_date_gmt'] ) ) {
$commentdata['comment_date_gmt'] = current_time( 'mysql', 1 );
}
if ( empty( $commentdata['comment_type'] ) ) {
$commentdata['comment_type'] = 'comment';
}
$commentdata = wp_filter_comment( $commentdata );
$commentdata['comment_approved'] = wp_allow_comment( $commentdata, $wp_error );
if ( is_wp_error( $commentdata['comment_approved'] ) ) {
return $commentdata['comment_approved'];
}
$comment_ID = wp_insert_comment( $commentdata );
if ( ! $comment_ID ) {
$fields = array( 'comment_author', 'comment_author_email', 'comment_author_url', 'comment_content' );
foreach ( $fields as $field ) {
if ( isset( $commentdata[ $field ] ) ) {
$commentdata[ $field ] = $wpdb->strip_invalid_text_for_column( $wpdb->comments, $field, $commentdata[ $field ] );
}
}
$commentdata = wp_filter_comment( $commentdata );
$commentdata['comment_approved'] = wp_allow_comment( $commentdata, $wp_error );
if ( is_wp_error( $commentdata['comment_approved'] ) ) {
return $commentdata['comment_approved'];
}
$comment_ID = wp_insert_comment( $commentdata );
if ( ! $comment_ID ) {
return false;
}
}
/**
* Fires immediately after a comment is inserted into the database.
*
* @since 1.2.0
* @since 4.5.0 The `$commentdata` parameter was added.
*
* @param int $comment_ID The comment ID.
* @param int|string $comment_approved 1 if the comment is approved, 0 if not, 'spam' if spam.
* @param array $commentdata Comment data.
*/
do_action( 'comment_post', $comment_ID, $commentdata['comment_approved'], $commentdata );
return $comment_ID;
}
/**
* Send a comment moderation notification to the comment moderator.
*
* @since 4.4.0
*
* @param int $comment_ID ID of the comment.
* @return bool True on success, false on failure.
*/
function wp_new_comment_notify_moderator( $comment_ID ) {
$comment = get_comment( $comment_ID );
// Only send notifications for pending comments.
$maybe_notify = ( '0' == $comment->comment_approved );
/** This filter is documented in wp-includes/comment.php */
$maybe_notify = apply_filters( 'notify_moderator', $maybe_notify, $comment_ID );
if ( ! $maybe_notify ) {
return false;
}
return wp_notify_moderator( $comment_ID );
}
/**
* Send a notification of a new comment to the post author.
*
* @since 4.4.0
*
* Uses the {@see 'notify_post_author'} filter to determine whether the post author
* should be notified when a new comment is added, overriding site setting.
*
* @param int $comment_ID Comment ID.
* @return bool True on success, false on failure.
*/
function wp_new_comment_notify_postauthor( $comment_ID ) {
$comment = get_comment( $comment_ID );
$maybe_notify = get_option( 'comments_notify' );
/**
* Filters whether to send the post author new comment notification emails,
* overriding the site setting.
*
* @since 4.4.0
*
* @param bool $maybe_notify Whether to notify the post author about the new comment.
* @param int $comment_ID The ID of the comment for the notification.
*/
$maybe_notify = apply_filters( 'notify_post_author', $maybe_notify, $comment_ID );
/*
* wp_notify_postauthor() checks if notifying the author of their own comment.
* By default, it won't, but filters can override this.
*/
if ( ! $maybe_notify ) {
return false;
}
// Only send notifications for approved comments.
if ( ! isset( $comment->comment_approved ) || '1' != $comment->comment_approved ) {
return false;
}
return wp_notify_postauthor( $comment_ID );
}
/**
* Sets the status of a comment.
*
* The {@see 'wp_set_comment_status'} action is called after the comment is handled.
* If the comment status is not in the list, then false is returned.
*
* @since 1.0.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param int|WP_Comment $comment_id Comment ID or WP_Comment object.
* @param string $comment_status New comment status, either 'hold', 'approve', 'spam', or 'trash'.
* @param bool $wp_error Whether to return a WP_Error object if there is a failure. Default false.
* @return bool|WP_Error True on success, false or WP_Error on failure.
*/
function wp_set_comment_status( $comment_id, $comment_status, $wp_error = false ) {
global $wpdb;
switch ( $comment_status ) {
case 'hold':
case '0':
$status = '0';
break;
case 'approve':
case '1':
$status = '1';
add_action( 'wp_set_comment_status', 'wp_new_comment_notify_postauthor' );
break;
case 'spam':
$status = 'spam';
break;
case 'trash':
$status = 'trash';
break;
default:
return false;
}
$comment_old = clone get_comment( $comment_id );
if ( ! $wpdb->update( $wpdb->comments, array( 'comment_approved' => $status ), array( 'comment_ID' => $comment_old->comment_ID ) ) ) {
if ( $wp_error ) {
return new WP_Error( 'db_update_error', __( 'Could not update comment status.' ), $wpdb->last_error );
} else {
return false;
}
}
clean_comment_cache( $comment_old->comment_ID );
$comment = get_comment( $comment_old->comment_ID );
/**
* Fires immediately after transitioning a comment's status from one to another in the database
* and removing the comment from the object cache, but prior to all status transition hooks.
*
* @since 1.5.0
*
* @param int $comment_id Comment ID.
* @param string $comment_status Current comment status. Possible values include
* 'hold', '0', 'approve', '1', 'spam', and 'trash'.
*/
do_action( 'wp_set_comment_status', $comment->comment_ID, $comment_status );
wp_transition_comment_status( $comment_status, $comment_old->comment_approved, $comment );
wp_update_comment_count( $comment->comment_post_ID );
return true;
}
/**
* Updates an existing comment in the database.
*
* Filters the comment and makes sure certain fields are valid before updating.
*
* @since 2.0.0
* @since 4.9.0 Add updating comment meta during comment update.
* @since 5.5.0 The `$wp_error` parameter was added.
* @since 5.5.0 The return values for an invalid comment or post ID
* were changed to false instead of 0.
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param array $commentarr Contains information on the comment.
* @param bool $wp_error Optional. Whether to return a WP_Error on failure. Default false.
* @return int|false|WP_Error The value 1 if the comment was updated, 0 if not updated.
* False or a WP_Error object on failure.
*/
function wp_update_comment( $commentarr, $wp_error = false ) {
global $wpdb;
// First, get all of the original fields.
$comment = get_comment( $commentarr['comment_ID'], ARRAY_A );
if ( empty( $comment ) ) {
if ( $wp_error ) {
return new WP_Error( 'invalid_comment_id', __( 'Invalid comment ID.' ) );
} else {
return false;
}
}
// Make sure that the comment post ID is valid (if specified).
if ( ! empty( $commentarr['comment_post_ID'] ) && ! get_post( $commentarr['comment_post_ID'] ) ) {
if ( $wp_error ) {
return new WP_Error( 'invalid_post_id', __( 'Invalid post ID.' ) );
} else {
return false;
}
}
// Escape data pulled from DB.
$comment = wp_slash( $comment );
$old_status = $comment['comment_approved'];
// Merge old and new fields with new fields overwriting old ones.
$commentarr = array_merge( $comment, $commentarr );
$commentarr = wp_filter_comment( $commentarr );
// Now extract the merged array.
$data = wp_unslash( $commentarr );
/**
* Filters the comment content before it is updated in the database.
*
* @since 1.5.0
*
* @param string $comment_content The comment data.
*/
$data['comment_content'] = apply_filters( 'comment_save_pre', $data['comment_content'] );
$data['comment_date_gmt'] = get_gmt_from_date( $data['comment_date'] );
if ( ! isset( $data['comment_approved'] ) ) {
$data['comment_approved'] = 1;
} elseif ( 'hold' === $data['comment_approved'] ) {
$data['comment_approved'] = 0;
} elseif ( 'approve' === $data['comment_approved'] ) {
$data['comment_approved'] = 1;
}
$comment_ID = $data['comment_ID'];
$comment_post_ID = $data['comment_post_ID'];
/**
* Filters the comment data immediately before it is updated in the database.
*
* Note: data being passed to the filter is already unslashed.
*
* @since 4.7.0
* @since 5.5.0 Returning a WP_Error value from the filter will short-circuit comment update
* and allow skipping further processing.
*
* @param array|WP_Error $data The new, processed comment data, or WP_Error.
* @param array $comment The old, unslashed comment data.
* @param array $commentarr The new, raw comment data.
*/
$data = apply_filters( 'wp_update_comment_data', $data, $comment, $commentarr );
// Do not carry on on failure.
if ( is_wp_error( $data ) ) {
if ( $wp_error ) {
return $data;
} else {
return false;
}
}
$keys = array( 'comment_post_ID', 'comment_content', 'comment_author', 'comment_author_email', 'comment_approved', 'comment_karma', 'comment_author_url', 'comment_date', 'comment_date_gmt', 'comment_type', 'comment_parent', 'user_id', 'comment_agent', 'comment_author_IP' );
$data = wp_array_slice_assoc( $data, $keys );
$rval = $wpdb->update( $wpdb->comments, $data, compact( 'comment_ID' ) );
if ( false === $rval ) {
if ( $wp_error ) {
return new WP_Error( 'db_update_error', __( 'Could not update comment in the database.' ), $wpdb->last_error );
} else {
return false;
}
}
// If metadata is provided, store it.
if ( isset( $commentarr['comment_meta'] ) && is_array( $commentarr['comment_meta'] ) ) {
foreach ( $commentarr['comment_meta'] as $meta_key => $meta_value ) {
update_comment_meta( $comment_ID, $meta_key, $meta_value );
}
}
clean_comment_cache( $comment_ID );
wp_update_comment_count( $comment_post_ID );
/**
* Fires immediately after a comment is updated in the database.
*
* The hook also fires immediately before comment status transition hooks are fired.
*
* @since 1.2.0
* @since 4.6.0 Added the `$data` parameter.
*
* @param int $comment_ID The comment ID.
* @param array $data Comment data.
*/
do_action( 'edit_comment', $comment_ID, $data );
$comment = get_comment( $comment_ID );
wp_transition_comment_status( $comment->comment_approved, $old_status, $comment );
return $rval;
}
/**
* Whether to defer comment counting.
*
* When setting $defer to true, all post comment counts will not be updated
* until $defer is set to false. When $defer is set to false, then all
* previously deferred updated post comment counts will then be automatically
* updated without having to call wp_update_comment_count() after.
*
* @since 2.5.0
*
* @param bool $defer
* @return bool
*/
function wp_defer_comment_counting( $defer = null ) {
static $_defer = false;
if ( is_bool( $defer ) ) {
$_defer = $defer;
// Flush any deferred counts.
if ( ! $defer ) {
wp_update_comment_count( null, true );
}
}
return $_defer;
}
/**
* Updates the comment count for post(s).
*
* When $do_deferred is false (is by default) and the comments have been set to
* be deferred, the post_id will be added to a queue, which will be updated at a
* later date and only updated once per post ID.
*
* If the comments have not be set up to be deferred, then the post will be
* updated. When $do_deferred is set to true, then all previous deferred post
* IDs will be updated along with the current $post_id.
*
* @since 2.1.0
*
* @see wp_update_comment_count_now() For what could cause a false return value
*
* @param int|null $post_id Post ID.
* @param bool $do_deferred Optional. Whether to process previously deferred
* post comment counts. Default false.
* @return bool|void True on success, false on failure or if post with ID does
* not exist.
*/
function wp_update_comment_count( $post_id, $do_deferred = false ) {
static $_deferred = array();
if ( empty( $post_id ) && ! $do_deferred ) {
return false;
}
if ( $do_deferred ) {
$_deferred = array_unique( $_deferred );
foreach ( $_deferred as $i => $_post_id ) {
wp_update_comment_count_now( $_post_id );
unset( $_deferred[ $i ] );
/** @todo Move this outside of the foreach and reset $_deferred to an array instead */
}
}
if ( wp_defer_comment_counting() ) {
$_deferred[] = $post_id;
return true;
} elseif ( $post_id ) {
return wp_update_comment_count_now( $post_id );
}
}
/**
* Updates the comment count for the post.
*
* @since 2.5.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param int $post_id Post ID
* @return bool True on success, false if the post does not exist.
*/
function wp_update_comment_count_now( $post_id ) {
global $wpdb;
$post_id = (int) $post_id;
if ( ! $post_id ) {
return false;
}
wp_cache_delete( 'comments-0', 'counts' );
wp_cache_delete( "comments-{$post_id}", 'counts' );
$post = get_post( $post_id );
if ( ! $post ) {
return false;
}
$old = (int) $post->comment_count;
/**
* Filters a post's comment count before it is updated in the database.
*
* @since 4.5.0
*
* @param int|null $new The new comment count. Default null.
* @param int $old The old comment count.
* @param int $post_id Post ID.
*/
$new = apply_filters( 'pre_wp_update_comment_count_now', null, $old, $post_id );
if ( is_null( $new ) ) {
$new = (int) $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM $wpdb->comments WHERE comment_post_ID = %d AND comment_approved = '1'", $post_id ) );
} else {
$new = (int) $new;
}
$wpdb->update( $wpdb->posts, array( 'comment_count' => $new ), array( 'ID' => $post_id ) );
clean_post_cache( $post );
/**
* Fires immediately after a post's comment count is updated in the database.
*
* @since 2.3.0
*
* @param int $post_id Post ID.
* @param int $new The new comment count.
* @param int $old The old comment count.
*/
do_action( 'wp_update_comment_count', $post_id, $new, $old );
/** This action is documented in wp-includes/post.php */
do_action( "edit_post_{$post->post_type}", $post_id, $post );
/** This action is documented in wp-includes/post.php */
do_action( 'edit_post', $post_id, $post );
return true;
}
//
// Ping and trackback functions.
//
/**
* Finds a pingback server URI based on the given URL.
*
* Checks the HTML for the rel="pingback" link and x-pingback headers. It does
* a check for the x-pingback headers first and returns that, if available. The
* check for the rel="pingback" has more overhead than just the header.
*
* @since 1.5.0
*
* @param string $url URL to ping.
* @param string $deprecated Not Used.
* @return string|false String containing URI on success, false on failure.
*/
function discover_pingback_server_uri( $url, $deprecated = '' ) {
if ( ! empty( $deprecated ) ) {
_deprecated_argument( __FUNCTION__, '2.7.0' );
}
$pingback_str_dquote = 'rel="pingback"';
$pingback_str_squote = 'rel=\'pingback\'';
/** @todo Should use Filter Extension or custom preg_match instead. */
$parsed_url = parse_url( $url );
if ( ! isset( $parsed_url['host'] ) ) { // Not a URL. This should never happen.
return false;
}
// Do not search for a pingback server on our own uploads.
$uploads_dir = wp_get_upload_dir();
if ( 0 === strpos( $url, $uploads_dir['baseurl'] ) ) {
return false;
}
$response = wp_safe_remote_head(
$url,
array(
'timeout' => 2,
'httpversion' => '1.0',
)
);
if ( is_wp_error( $response ) ) {
return false;
}
if ( wp_remote_retrieve_header( $response, 'x-pingback' ) ) {
return wp_remote_retrieve_header( $response, 'x-pingback' );
}
// Not an (x)html, sgml, or xml page, no use going further.
if ( preg_match( '#(image|audio|video|model)/#is', wp_remote_retrieve_header( $response, 'content-type' ) ) ) {
return false;
}
// Now do a GET since we're going to look in the HTML headers (and we're sure it's not a binary file).
$response = wp_safe_remote_get(
$url,
array(
'timeout' => 2,
'httpversion' => '1.0',
)
);
if ( is_wp_error( $response ) ) {
return false;
}
$contents = wp_remote_retrieve_body( $response );
$pingback_link_offset_dquote = strpos( $contents, $pingback_str_dquote );
$pingback_link_offset_squote = strpos( $contents, $pingback_str_squote );
if ( $pingback_link_offset_dquote || $pingback_link_offset_squote ) {
$quote = ( $pingback_link_offset_dquote ) ? '"' : '\'';
$pingback_link_offset = ( '"' === $quote ) ? $pingback_link_offset_dquote : $pingback_link_offset_squote;
$pingback_href_pos = strpos( $contents, 'href=', $pingback_link_offset );
$pingback_href_start = $pingback_href_pos + 6;
$pingback_href_end = strpos( $contents, $quote, $pingback_href_start );
$pingback_server_url_len = $pingback_href_end - $pingback_href_start;
$pingback_server_url = substr( $contents, $pingback_href_start, $pingback_server_url_len );
// We may find rel="pingback" but an incomplete pingback URL.
if ( $pingback_server_url_len > 0 ) { // We got it!
return $pingback_server_url;
}
}
return false;
}
/**
* Perform all pingbacks, enclosures, trackbacks, and send to pingback services.
*
* @since 2.1.0
* @since 5.6.0 Introduced `do_all_pings` action hook for individual services.
*/
function do_all_pings() {
/**
* Fires immediately after the `do_pings` event to hook services individually.
*
* @since 5.6.0
*/
do_action( 'do_all_pings' );
}
/**
* Perform all pingbacks.
*
* @since 5.6.0
*/
function do_all_pingbacks() {
$pings = get_posts(
array(
'post_type' => get_post_types(),
'suppress_filters' => false,
'nopaging' => true,
'meta_key' => '_pingme',
'fields' => 'ids',
)
);
foreach ( $pings as $ping ) {
delete_post_meta( $ping, '_pingme' );
pingback( null, $ping );
}
}
/**
* Perform all enclosures.
*
* @since 5.6.0
*/
function do_all_enclosures() {
$enclosures = get_posts(
array(
'post_type' => get_post_types(),
'suppress_filters' => false,
'nopaging' => true,
'meta_key' => '_encloseme',
'fields' => 'ids',
)
);
foreach ( $enclosures as $enclosure ) {
delete_post_meta( $enclosure, '_encloseme' );
do_enclose( null, $enclosure );
}
}
/**
* Perform all trackbacks.
*
* @since 5.6.0
*/
function do_all_trackbacks() {
$trackbacks = get_posts(
array(
'post_type' => get_post_types(),
'suppress_filters' => false,
'nopaging' => true,
'meta_key' => '_trackbackme',
'fields' => 'ids',
)
);
foreach ( $trackbacks as $trackback ) {
delete_post_meta( $trackback, '_trackbackme' );
do_trackbacks( $trackback );
}
}
/**
* Perform trackbacks.
*
* @since 1.5.0
* @since 4.7.0 `$post_id` can be a WP_Post object.
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param int|WP_Post $post_id Post object or ID to do trackbacks on.
*/
function do_trackbacks( $post_id ) {
global $wpdb;
$post = get_post( $post_id );
if ( ! $post ) {
return false;
}
$to_ping = get_to_ping( $post );
$pinged = get_pung( $post );
if ( empty( $to_ping ) ) {
$wpdb->update( $wpdb->posts, array( 'to_ping' => '' ), array( 'ID' => $post->ID ) );
return;
}
if ( empty( $post->post_excerpt ) ) {
/** This filter is documented in wp-includes/post-template.php */
$excerpt = apply_filters( 'the_content', $post->post_content, $post->ID );
} else {
/** This filter is documented in wp-includes/post-template.php */
$excerpt = apply_filters( 'the_excerpt', $post->post_excerpt );
}
$excerpt = str_replace( ']]>', ']]>', $excerpt );
$excerpt = wp_html_excerpt( $excerpt, 252, '…' );
/** This filter is documented in wp-includes/post-template.php */
$post_title = apply_filters( 'the_title', $post->post_title, $post->ID );
$post_title = strip_tags( $post_title );
if ( $to_ping ) {
foreach ( (array) $to_ping as $tb_ping ) {
$tb_ping = trim( $tb_ping );
if ( ! in_array( $tb_ping, $pinged, true ) ) {
trackback( $tb_ping, $post_title, $excerpt, $post->ID );
$pinged[] = $tb_ping;
} else {
$wpdb->query(
$wpdb->prepare(
"UPDATE $wpdb->posts SET to_ping = TRIM(REPLACE(to_ping, %s,
'')) WHERE ID = %d",
$tb_ping,
$post->ID
)
);
}
}
}
}
/**
* Sends pings to all of the ping site services.
*
* @since 1.2.0
*
* @param int $post_id Post ID.
* @return int Same as Post ID from parameter
*/
function generic_ping( $post_id = 0 ) {
$services = get_option( 'ping_sites' );
$services = explode( "\n", $services );
foreach ( (array) $services as $service ) {
$service = trim( $service );
if ( '' !== $service ) {
weblog_ping( $service );
}
}
return $post_id;
}
/**
* Pings back the links found in a post.
*
* @since 0.71
* @since 4.7.0 `$post_id` can be a WP_Post object.
*
* @param string $content Post content to check for links. If empty will retrieve from post.
* @param int|WP_Post $post_id Post Object or ID.
*/
function pingback( $content, $post_id ) {
include_once ABSPATH . WPINC . '/class-IXR.php';
include_once ABSPATH . WPINC . '/class-wp-http-ixr-client.php';
// Original code by Mort (http://mort.mine.nu:8080).
$post_links = array();
$post = get_post( $post_id );
if ( ! $post ) {
return;
}
$pung = get_pung( $post );
if ( empty( $content ) ) {
$content = $post->post_content;
}
/*
* Step 1.
* Parsing the post, external links (if any) are stored in the $post_links array.
*/
$post_links_temp = wp_extract_urls( $content );
/*
* Step 2.
* Walking through the links array.
* First we get rid of links pointing to sites, not to specific files.
* Example:
* http://dummy-weblog.org
* http://dummy-weblog.org/
* http://dummy-weblog.org/post.php
* We don't wanna ping first and second types, even if they have a valid .
*/
foreach ( (array) $post_links_temp as $link_test ) {
// If we haven't pung it already and it isn't a link to itself.
if ( ! in_array( $link_test, $pung, true ) && ( url_to_postid( $link_test ) != $post->ID )
// Also, let's never ping local attachments.
&& ! is_local_attachment( $link_test )
) {
$test = parse_url( $link_test );
if ( $test ) {
if ( isset( $test['query'] ) ) {
$post_links[] = $link_test;
} elseif ( isset( $test['path'] ) && ( '/' !== $test['path'] ) && ( '' !== $test['path'] ) ) {
$post_links[] = $link_test;
}
}
}
}
$post_links = array_unique( $post_links );
/**
* Fires just before pinging back links found in a post.
*
* @since 2.0.0
*
* @param string[] $post_links Array of link URLs to be checked (passed by reference).
* @param string[] $pung Array of link URLs already pinged (passed by reference).
* @param int $post_ID The post ID.
*/
do_action_ref_array( 'pre_ping', array( &$post_links, &$pung, $post->ID ) );
foreach ( (array) $post_links as $pagelinkedto ) {
$pingback_server_url = discover_pingback_server_uri( $pagelinkedto );
if ( $pingback_server_url ) {
set_time_limit( 60 );
// Now, the RPC call.
$pagelinkedfrom = get_permalink( $post );
// Using a timeout of 3 seconds should be enough to cover slow servers.
$client = new WP_HTTP_IXR_Client( $pingback_server_url );
$client->timeout = 3;
/**
* Filters the user agent sent when pinging-back a URL.
*
* @since 2.9.0
*
* @param string $concat_useragent The user agent concatenated with ' -- WordPress/'
* and the WordPress version.
* @param string $useragent The useragent.
* @param string $pingback_server_url The server URL being linked to.
* @param string $pagelinkedto URL of page linked to.
* @param string $pagelinkedfrom URL of page linked from.
*/
$client->useragent = apply_filters( 'pingback_useragent', $client->useragent . ' -- WordPress/' . get_bloginfo( 'version' ), $client->useragent, $pingback_server_url, $pagelinkedto, $pagelinkedfrom );
// When set to true, this outputs debug messages by itself.
$client->debug = false;
if ( $client->query( 'pingback.ping', $pagelinkedfrom, $pagelinkedto ) || ( isset( $client->error->code ) && 48 == $client->error->code ) ) { // Already registered.
add_ping( $post, $pagelinkedto );
}
}
}
}
/**
* Check whether blog is public before returning sites.
*
* @since 2.1.0
*
* @param mixed $sites Will return if blog is public, will not return if not public.
* @return mixed Empty string if blog is not public, returns $sites, if site is public.
*/
function privacy_ping_filter( $sites ) {
if ( '0' != get_option( 'blog_public' ) ) {
return $sites;
} else {
return '';
}
}
/**
* Send a Trackback.
*
* Updates database when sending trackback to prevent duplicates.
*
* @since 0.71
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param string $trackback_url URL to send trackbacks.
* @param string $title Title of post.
* @param string $excerpt Excerpt of post.
* @param int $ID Post ID.
* @return int|false|void Database query from update.
*/
function trackback( $trackback_url, $title, $excerpt, $ID ) {
global $wpdb;
if ( empty( $trackback_url ) ) {
return;
}
$options = array();
$options['timeout'] = 10;
$options['body'] = array(
'title' => $title,
'url' => get_permalink( $ID ),
'blog_name' => get_option( 'blogname' ),
'excerpt' => $excerpt,
);
$response = wp_safe_remote_post( $trackback_url, $options );
if ( is_wp_error( $response ) ) {
return;
}
$wpdb->query( $wpdb->prepare( "UPDATE $wpdb->posts SET pinged = CONCAT(pinged, '\n', %s) WHERE ID = %d", $trackback_url, $ID ) );
return $wpdb->query( $wpdb->prepare( "UPDATE $wpdb->posts SET to_ping = TRIM(REPLACE(to_ping, %s, '')) WHERE ID = %d", $trackback_url, $ID ) );
}
/**
* Send a pingback.
*
* @since 1.2.0
*
* @param string $server Host of blog to connect to.
* @param string $path Path to send the ping.
*/
function weblog_ping( $server = '', $path = '' ) {
include_once ABSPATH . WPINC . '/class-IXR.php';
include_once ABSPATH . WPINC . '/class-wp-http-ixr-client.php';
// Using a timeout of 3 seconds should be enough to cover slow servers.
$client = new WP_HTTP_IXR_Client( $server, ( ( ! strlen( trim( $path ) ) || ( '/' === $path ) ) ? false : $path ) );
$client->timeout = 3;
$client->useragent .= ' -- WordPress/' . get_bloginfo( 'version' );
// When set to true, this outputs debug messages by itself.
$client->debug = false;
$home = trailingslashit( home_url() );
if ( ! $client->query( 'weblogUpdates.extendedPing', get_option( 'blogname' ), $home, get_bloginfo( 'rss2_url' ) ) ) { // Then try a normal ping.
$client->query( 'weblogUpdates.ping', get_option( 'blogname' ), $home );
}
}
/**
* Default filter attached to pingback_ping_source_uri to validate the pingback's Source URI
*
* @since 3.5.1
*
* @see wp_http_validate_url()
*
* @param string $source_uri
* @return string
*/
function pingback_ping_source_uri( $source_uri ) {
return (string) wp_http_validate_url( $source_uri );
}
/**
* Default filter attached to xmlrpc_pingback_error.
*
* Returns a generic pingback error code unless the error code is 48,
* which reports that the pingback is already registered.
*
* @since 3.5.1
*
* @link https://www.hixie.ch/specs/pingback/pingback#TOC3
*
* @param IXR_Error $ixr_error
* @return IXR_Error
*/
function xmlrpc_pingback_error( $ixr_error ) {
if ( 48 === $ixr_error->code ) {
return $ixr_error;
}
return new IXR_Error( 0, '' );
}
//
// Cache.
//
/**
* Removes a comment from the object cache.
*
* @since 2.3.0
*
* @param int|array $ids Comment ID or an array of comment IDs to remove from cache.
*/
function clean_comment_cache( $ids ) {
foreach ( (array) $ids as $id ) {
wp_cache_delete( $id, 'comment' );
/**
* Fires immediately after a comment has been removed from the object cache.
*
* @since 4.5.0
*
* @param int $id Comment ID.
*/
do_action( 'clean_comment_cache', $id );
}
wp_cache_set( 'last_changed', microtime(), 'comment' );
}
/**
* Updates the comment cache of given comments.
*
* Will add the comments in $comments to the cache. If comment ID already exists
* in the comment cache then it will not be updated. The comment is added to the
* cache using the comment group with the key using the ID of the comments.
*
* @since 2.3.0
* @since 4.4.0 Introduced the `$update_meta_cache` parameter.
*
* @param WP_Comment[] $comments Array of comment objects
* @param bool $update_meta_cache Whether to update commentmeta cache. Default true.
*/
function update_comment_cache( $comments, $update_meta_cache = true ) {
foreach ( (array) $comments as $comment ) {
wp_cache_add( $comment->comment_ID, $comment, 'comment' );
}
if ( $update_meta_cache ) {
// Avoid `wp_list_pluck()` in case `$comments` is passed by reference.
$comment_ids = array();
foreach ( $comments as $comment ) {
$comment_ids[] = $comment->comment_ID;
}
update_meta_cache( 'comment', $comment_ids );
}
}
/**
* Adds any comments from the given IDs to the cache that do not already exist in cache.
*
* @since 4.4.0
* @access private
*
* @see update_comment_cache()
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param int[] $comment_ids Array of comment IDs.
* @param bool $update_meta_cache Optional. Whether to update the meta cache. Default true.
*/
function _prime_comment_caches( $comment_ids, $update_meta_cache = true ) {
global $wpdb;
$non_cached_ids = _get_non_cached_ids( $comment_ids, 'comment' );
if ( ! empty( $non_cached_ids ) ) {
$fresh_comments = $wpdb->get_results( sprintf( "SELECT $wpdb->comments.* FROM $wpdb->comments WHERE comment_ID IN (%s)", implode( ',', array_map( 'intval', $non_cached_ids ) ) ) );
update_comment_cache( $fresh_comments, $update_meta_cache );
}
}
//
// Internal.
//
/**
* Close comments on old posts on the fly, without any extra DB queries. Hooked to the_posts.
*
* @since 2.7.0
* @access private
*
* @param WP_Post $posts Post data object.
* @param WP_Query $query Query object.
* @return array
*/
function _close_comments_for_old_posts( $posts, $query ) {
if ( empty( $posts ) || ! $query->is_singular() || ! get_option( 'close_comments_for_old_posts' ) ) {
return $posts;
}
/**
* Filters the list of post types to automatically close comments for.
*
* @since 3.2.0
*
* @param string[] $post_types An array of post type names.
*/
$post_types = apply_filters( 'close_comments_for_post_types', array( 'post' ) );
if ( ! in_array( $posts[0]->post_type, $post_types, true ) ) {
return $posts;
}
$days_old = (int) get_option( 'close_comments_days_old' );
if ( ! $days_old ) {
return $posts;
}
if ( time() - strtotime( $posts[0]->post_date_gmt ) > ( $days_old * DAY_IN_SECONDS ) ) {
$posts[0]->comment_status = 'closed';
$posts[0]->ping_status = 'closed';
}
return $posts;
}
/**
* Close comments on an old post. Hooked to comments_open and pings_open.
*
* @since 2.7.0
* @access private
*
* @param bool $open Comments open or closed.
* @param int $post_id Post ID.
* @return bool $open
*/
function _close_comments_for_old_post( $open, $post_id ) {
if ( ! $open ) {
return $open;
}
if ( ! get_option( 'close_comments_for_old_posts' ) ) {
return $open;
}
$days_old = (int) get_option( 'close_comments_days_old' );
if ( ! $days_old ) {
return $open;
}
$post = get_post( $post_id );
/** This filter is documented in wp-includes/comment.php */
$post_types = apply_filters( 'close_comments_for_post_types', array( 'post' ) );
if ( ! in_array( $post->post_type, $post_types, true ) ) {
return $open;
}
// Undated drafts should not show up as comments closed.
if ( '0000-00-00 00:00:00' === $post->post_date_gmt ) {
return $open;
}
if ( time() - strtotime( $post->post_date_gmt ) > ( $days_old * DAY_IN_SECONDS ) ) {
return false;
}
return $open;
}
/**
* Handles the submission of a comment, usually posted to wp-comments-post.php via a comment form.
*
* This function expects unslashed data, as opposed to functions such as `wp_new_comment()` which
* expect slashed data.
*
* @since 4.4.0
*
* @param array $comment_data {
* Comment data.
*
* @type string|int $comment_post_ID The ID of the post that relates to the comment.
* @type string $author The name of the comment author.
* @type string $email The comment author email address.
* @type string $url The comment author URL.
* @type string $comment The content of the comment.
* @type string|int $comment_parent The ID of this comment's parent, if any. Default 0.
* @type string $_wp_unfiltered_html_comment The nonce value for allowing unfiltered HTML.
* }
* @return WP_Comment|WP_Error A WP_Comment object on success, a WP_Error object on failure.
*/
function wp_handle_comment_submission( $comment_data ) {
$comment_post_ID = 0;
$comment_parent = 0;
$user_ID = 0;
$comment_author = null;
$comment_author_email = null;
$comment_author_url = null;
$comment_content = null;
if ( isset( $comment_data['comment_post_ID'] ) ) {
$comment_post_ID = (int) $comment_data['comment_post_ID'];
}
if ( isset( $comment_data['author'] ) && is_string( $comment_data['author'] ) ) {
$comment_author = trim( strip_tags( $comment_data['author'] ) );
}
if ( isset( $comment_data['email'] ) && is_string( $comment_data['email'] ) ) {
$comment_author_email = trim( $comment_data['email'] );
}
if ( isset( $comment_data['url'] ) && is_string( $comment_data['url'] ) ) {
$comment_author_url = trim( $comment_data['url'] );
}
if ( isset( $comment_data['comment'] ) && is_string( $comment_data['comment'] ) ) {
$comment_content = trim( $comment_data['comment'] );
}
if ( isset( $comment_data['comment_parent'] ) ) {
$comment_parent = absint( $comment_data['comment_parent'] );
}
$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 1.5.0
*
* @param int $comment_post_ID Post ID.
*/
do_action( 'comment_id_not_found', $comment_post_ID );
return new WP_Error( 'comment_id_not_found' );
}
// get_post_status() will get the parent status for attachments.
$status = get_post_status( $post );
if ( ( 'private' === $status ) && ! current_user_can( 'read_post', $comment_post_ID ) ) {
return new WP_Error( 'comment_id_not_found' );
}
$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 1.5.0
*
* @param int $comment_post_ID Post ID.
*/
do_action( 'comment_closed', $comment_post_ID );
return new WP_Error( 'comment_closed', __( 'Sorry, comments are closed for this item.' ), 403 );
} 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 );
return new WP_Error( 'comment_on_trash' );
} elseif ( ! $status_obj->public && ! $status_obj->private ) {
/**
* Fires when a comment is attempted on a post in draft mode.
*
* @since 1.5.1
*
* @param int $comment_post_ID Post ID.
*/
do_action( 'comment_on_draft', $comment_post_ID );
if ( current_user_can( 'read_post', $comment_post_ID ) ) {
return new WP_Error( 'comment_on_draft', __( 'Sorry, comments are not allowed for this item.' ), 403 );
} else {
return new WP_Error( 'comment_on_draft' );
}
} elseif ( post_password_required( $comment_post_ID ) ) {
/**
* Fires when a comment is attempted on a password-protected post.
*
* @since 2.9.0
*
* @param int $comment_post_ID Post ID.
*/
do_action( 'comment_on_password_protected', $comment_post_ID );
return new WP_Error( 'comment_on_password_protected' );
} else {
/**
* Fires before a comment is posted.
*
* @since 2.8.0
*
* @param int $comment_post_ID Post ID.
*/
do_action( 'pre_comment_on_post', $comment_post_ID );
}
// 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 = $user->display_name;
$comment_author_email = $user->user_email;
$comment_author_url = $user->user_url;
$user_ID = $user->ID;
if ( current_user_can( 'unfiltered_html' ) ) {
if ( ! isset( $comment_data['_wp_unfiltered_html_comment'] )
|| ! wp_verify_nonce( $comment_data['_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.
remove_filter( 'pre_comment_content', 'wp_filter_post_kses' );
add_filter( 'pre_comment_content', 'wp_filter_kses' );
}
}
} else {
if ( get_option( 'comment_registration' ) ) {
return new WP_Error( 'not_logged_in', __( 'Sorry, you must be logged in to comment.' ), 403 );
}
}
$comment_type = 'comment';
if ( get_option( 'require_name_email' ) && ! $user->exists() ) {
if ( '' == $comment_author_email || '' == $comment_author ) {
return new WP_Error( 'require_name_email', __( 'Error: Please fill the required fields (name, email).' ), 200 );
} elseif ( ! is_email( $comment_author_email ) ) {
return new WP_Error( 'require_valid_email', __( 'Error: Please enter a valid email address.' ), 200 );
}
}
$commentdata = compact(
'comment_post_ID',
'comment_author',
'comment_author_email',
'comment_author_url',
'comment_content',
'comment_type',
'comment_parent',
'user_ID'
);
/**
* Filters whether an empty comment should be allowed.
*
* @since 5.1.0
*
* @param bool $allow_empty_comment Whether to allow empty comments. Default false.
* @param array $commentdata Array of comment data to be sent to wp_insert_comment().
*/
$allow_empty_comment = apply_filters( 'allow_empty_comment', false, $commentdata );
if ( '' === $comment_content && ! $allow_empty_comment ) {
return new WP_Error( 'require_valid_comment', __( 'Error: Please type your comment text.' ), 200 );
}
$check_max_lengths = wp_check_comment_data_max_lengths( $commentdata );
if ( is_wp_error( $check_max_lengths ) ) {
return $check_max_lengths;
}
$comment_id = wp_new_comment( wp_slash( $commentdata ), true );
if ( is_wp_error( $comment_id ) ) {
return $comment_id;
}
if ( ! $comment_id ) {
return new WP_Error( 'comment_save_error', __( 'Error: The comment could not be saved. Please try again later.' ), 500 );
}
return get_comment( $comment_id );
}
/**
* Registers the personal data exporter for comments.
*
* @since 4.9.6
*
* @param array $exporters An array of personal data exporters.
* @return array An array of personal data exporters.
*/
function wp_register_comment_personal_data_exporter( $exporters ) {
$exporters['wordpress-comments'] = array(
'exporter_friendly_name' => __( 'WordPress Comments' ),
'callback' => 'wp_comments_personal_data_exporter',
);
return $exporters;
}
/**
* Finds and exports personal data associated with an email address from the comments table.
*
* @since 4.9.6
*
* @param string $email_address The comment author email address.
* @param int $page Comment page.
* @return array An array of personal data.
*/
function wp_comments_personal_data_exporter( $email_address, $page = 1 ) {
// Limit us to 500 comments at a time to avoid timing out.
$number = 500;
$page = (int) $page;
$data_to_export = array();
$comments = get_comments(
array(
'author_email' => $email_address,
'number' => $number,
'paged' => $page,
'order_by' => 'comment_ID',
'order' => 'ASC',
'update_comment_meta_cache' => false,
)
);
$comment_prop_to_export = array(
'comment_author' => __( 'Comment Author' ),
'comment_author_email' => __( 'Comment Author Email' ),
'comment_author_url' => __( 'Comment Author URL' ),
'comment_author_IP' => __( 'Comment Author IP' ),
'comment_agent' => __( 'Comment Author User Agent' ),
'comment_date' => __( 'Comment Date' ),
'comment_content' => __( 'Comment Content' ),
'comment_link' => __( 'Comment URL' ),
);
foreach ( (array) $comments as $comment ) {
$comment_data_to_export = array();
foreach ( $comment_prop_to_export as $key => $name ) {
$value = '';
switch ( $key ) {
case 'comment_author':
case 'comment_author_email':
case 'comment_author_url':
case 'comment_author_IP':
case 'comment_agent':
case 'comment_date':
$value = $comment->{$key};
break;
case 'comment_content':
$value = get_comment_text( $comment->comment_ID );
break;
case 'comment_link':
$value = get_comment_link( $comment->comment_ID );
$value = sprintf(
'%s',
esc_url( $value ),
esc_html( $value )
);
break;
}
if ( ! empty( $value ) ) {
$comment_data_to_export[] = array(
'name' => $name,
'value' => $value,
);
}
}
$data_to_export[] = array(
'group_id' => 'comments',
'group_label' => __( 'Comments' ),
'group_description' => __( 'User’s comment data.' ),
'item_id' => "comment-{$comment->comment_ID}",
'data' => $comment_data_to_export,
);
}
$done = count( $comments ) < $number;
return array(
'data' => $data_to_export,
'done' => $done,
);
}
/**
* Registers the personal data eraser for comments.
*
* @since 4.9.6
*
* @param array $erasers An array of personal data erasers.
* @return array An array of personal data erasers.
*/
function wp_register_comment_personal_data_eraser( $erasers ) {
$erasers['wordpress-comments'] = array(
'eraser_friendly_name' => __( 'WordPress Comments' ),
'callback' => 'wp_comments_personal_data_eraser',
);
return $erasers;
}
/**
* Erases personal data associated with an email address from the comments table.
*
* @since 4.9.6
*
* @param string $email_address The comment author email address.
* @param int $page Comment page.
* @return array
*/
function wp_comments_personal_data_eraser( $email_address, $page = 1 ) {
global $wpdb;
if ( empty( $email_address ) ) {
return array(
'items_removed' => false,
'items_retained' => false,
'messages' => array(),
'done' => true,
);
}
// Limit us to 500 comments at a time to avoid timing out.
$number = 500;
$page = (int) $page;
$items_removed = false;
$items_retained = false;
$comments = get_comments(
array(
'author_email' => $email_address,
'number' => $number,
'paged' => $page,
'order_by' => 'comment_ID',
'order' => 'ASC',
'include_unapproved' => true,
)
);
/* translators: Name of a comment's author after being anonymized. */
$anon_author = __( 'Anonymous' );
$messages = array();
foreach ( (array) $comments as $comment ) {
$anonymized_comment = array();
$anonymized_comment['comment_agent'] = '';
$anonymized_comment['comment_author'] = $anon_author;
$anonymized_comment['comment_author_email'] = '';
$anonymized_comment['comment_author_IP'] = wp_privacy_anonymize_data( 'ip', $comment->comment_author_IP );
$anonymized_comment['comment_author_url'] = '';
$anonymized_comment['user_id'] = 0;
$comment_id = (int) $comment->comment_ID;
/**
* Filters whether to anonymize the comment.
*
* @since 4.9.6
*
* @param bool|string $anon_message Whether to apply the comment anonymization (bool) or a custom
* message (string). Default true.
* @param WP_Comment $comment WP_Comment object.
* @param array $anonymized_comment Anonymized comment data.
*/
$anon_message = apply_filters( 'wp_anonymize_comment', true, $comment, $anonymized_comment );
if ( true !== $anon_message ) {
if ( $anon_message && is_string( $anon_message ) ) {
$messages[] = esc_html( $anon_message );
} else {
/* translators: %d: Comment ID. */
$messages[] = sprintf( __( 'Comment %d contains personal data but could not be anonymized.' ), $comment_id );
}
$items_retained = true;
continue;
}
$args = array(
'comment_ID' => $comment_id,
);
$updated = $wpdb->update( $wpdb->comments, $anonymized_comment, $args );
if ( $updated ) {
$items_removed = true;
clean_comment_cache( $comment_id );
} else {
$items_retained = true;
}
}
$done = count( $comments ) < $number;
return array(
'items_removed' => $items_removed,
'items_retained' => $items_retained,
'messages' => $messages,
'done' => $done,
);
}
/**
* Sets the last changed time for the 'comment' cache group.
*
* @since 5.0.0
*/
function wp_cache_set_comments_last_changed() {
wp_cache_set( 'last_changed', microtime(), 'comment' );
}
/**
* Updates the comment type for a batch of comments.
*
* @since 5.5.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*/
function _wp_batch_update_comment_type() {
global $wpdb;
$lock_name = 'update_comment_type.lock';
// Try to lock.
$lock_result = $wpdb->query( $wpdb->prepare( "INSERT IGNORE INTO `$wpdb->options` ( `option_name`, `option_value`, `autoload` ) VALUES (%s, %s, 'no') /* LOCK */", $lock_name, time() ) );
if ( ! $lock_result ) {
$lock_result = get_option( $lock_name );
// Bail if we were unable to create a lock, or if the existing lock is still valid.
if ( ! $lock_result || ( $lock_result > ( time() - HOUR_IN_SECONDS ) ) ) {
wp_schedule_single_event( time() + ( 5 * MINUTE_IN_SECONDS ), 'wp_update_comment_type_batch' );
return;
}
}
// Update the lock, as by this point we've definitely got a lock, just need to fire the actions.
update_option( $lock_name, time() );
// Check if there's still an empty comment type.
$empty_comment_type = $wpdb->get_var(
"SELECT comment_ID FROM $wpdb->comments
WHERE comment_type = ''
LIMIT 1"
);
// No empty comment type, we're done here.
if ( ! $empty_comment_type ) {
update_option( 'finished_updating_comment_type', true );
delete_option( $lock_name );
return;
}
// Empty comment type found? We'll need to run this script again.
wp_schedule_single_event( time() + ( 2 * MINUTE_IN_SECONDS ), 'wp_update_comment_type_batch' );
/**
* Filters the comment batch size for updating the comment type.
*
* @since 5.5.0
*
* @param int $comment_batch_size The comment batch size. Default 100.
*/
$comment_batch_size = (int) apply_filters( 'wp_update_comment_type_batch_size', 100 );
// Get the IDs of the comments to update.
$comment_ids = $wpdb->get_col(
$wpdb->prepare(
"SELECT comment_ID
FROM {$wpdb->comments}
WHERE comment_type = ''
ORDER BY comment_ID DESC
LIMIT %d",
$comment_batch_size
)
);
if ( $comment_ids ) {
$comment_id_list = implode( ',', $comment_ids );
// Update the `comment_type` field value to be `comment` for the next batch of comments.
$wpdb->query(
"UPDATE {$wpdb->comments}
SET comment_type = 'comment'
WHERE comment_type = ''
AND comment_ID IN ({$comment_id_list})" // phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared
);
// Make sure to clean the comment cache.
clean_comment_cache( $comment_ids );
}
delete_option( $lock_name );
}
/**
* In order to avoid the _wp_batch_update_comment_type() job being accidentally removed,
* check that it's still scheduled while we haven't finished updating comment types.
*
* @ignore
* @since 5.5.0
*/
function _wp_check_for_scheduled_update_comment_type() {
if ( ! get_option( 'finished_updating_comment_type' ) && ! wp_next_scheduled( 'wp_update_comment_type_batch' ) ) {
wp_schedule_single_event( time() + MINUTE_IN_SECONDS, 'wp_update_comment_type_batch' );
}
}