WordPress/wp-includes/comment-functions.php

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<?php
/**
* Comment API: Top-level comments functionality
*
* @package WordPress
* @subpackage Comments
* @since 4.4.0
*/
/**
* 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 whitelist, 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 match the blacklist of words,
* then the check fails.
*
* If the comment author was approved before, then the comment is automatically
* whitelisted.
*
* 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 );
// Check for the number of external links if a max allowed number is set.
if ( $max_links = get_option( 'comment_max_links' ) ) {
$num_links = preg_match_all( '/<a [^>]*href/i', $comment, $out );
/**
* Filter the maximum number of links allowed in a comment.
*
* @since 3.0.0
*
* @param int $num_links The number of links allowed.
* @param string $url Comment author's URL. Included in allowed links total.
*/
$num_links = apply_filters( 'comment_max_links_url', $num_links, $url );
/*
* 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_whitelist')) {
if ( 'trackback' != $comment_type && 'pingback' != $comment_type && $author != '' && $email != '' ) {
// expected_slashed ($author, $email)
$ok_to_comment = $wpdb->get_var("SELECT comment_approved FROM $wpdb->comments WHERE comment_author = '$author' AND comment_author_email = '$email' and comment_approved = '1' LIMIT 1");
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 {@see WP_Comment_Query} over a direct query.
*
* @param int $post_id The ID of the post.
* @param array $args Optional. See {@see WP_Comment_Query::query()} for information
* on accepted arguments.
* @return int|array $comments The approved comments, or number of comments if `$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',
);
$r = wp_parse_args( $args, $defaults );
$query = new WP_Comment_Query;
return $query->query( $r );
}
/**
* 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 object $comment
*
* @param WP_Comment|string|int $comment Comment to retrieve.
* @param string $output Optional. OBJECT or ARRAY_A or ARRAY_N constants.
* @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 mixed $_comment Comment data.
*/
$_comment = apply_filters( 'get_comment', $_comment );
if ( $output == OBJECT ) {
return $_comment;
} elseif ( $output == ARRAY_A ) {
return $_comment->to_array();
} elseif ( $output == ARRAY_N ) {
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 $args Optional. Array or string of arguments. See {@see WP_Comment_Query::parse_query()}
* for information on accepted arguments. Default empty.
* @return int|array List of comments or number of found comments if `$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 array List of comment statuses.
*/
function get_comment_statuses() {
$status = array(
'hold' => __('Unapproved'),
/* translators: comment status */
'approve' => _x('Approved', 'adjective'),
/* translators: comment status */
'spam' => _x('Spam', 'adjective'),
/* translators: comment status */
'trash' => _x('Trash', 'adjective'),
);
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';
}
// 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';
}
/**
* Filter 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
*
* @global wpdb $wpdb WordPress database abstraction object.
* @staticvar array $cache_lastcommentmodified
*
* @param string $timezone Which timezone to use in reference to 'gmt', 'blog',
* or 'server' locations.
* @return string Last comment modified date.
*/
function get_lastcommentmodified($timezone = 'server') {
global $wpdb;
static $cache_lastcommentmodified = array();
if ( isset($cache_lastcommentmodified[$timezone]) )
return $cache_lastcommentmodified[$timezone];
$add_seconds_server = date('Z');
switch ( strtolower($timezone)) {
case 'gmt':
$lastcommentmodified = $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':
$lastcommentmodified = $wpdb->get_var("SELECT comment_date FROM $wpdb->comments WHERE comment_approved = '1' ORDER BY comment_date_gmt DESC LIMIT 1");
break;
case 'server':
$lastcommentmodified = $wpdb->get_var($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;
}
$cache_lastcommentmodified[$timezone] = $lastcommentmodified;
return $lastcommentmodified;
}
/**
* The amount of comments in a post or total comments.
*
* A lot like {@link wp_count_comments()}, in that they both return comment
* stats (albeit with different types). The {@link wp_count_comments()} actual
* caches, but this function does not.
*
* @since 2.0.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param int $post_id Optional. Comment amount in post if > 0, else total comments blog wide.
* @return array The amount of spam, approved, awaiting moderation, and total 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 $comment_count;
}
//
// Comment meta functions
//
/**
* Add meta data field to a comment.
*
* @since 2.9.0
* @link https://codex.wordpress.org/Function_Reference/add_comment_meta
*
* @param int $comment_id Comment ID.
* @param string $meta_key Metadata name.
* @param mixed $meta_value Metadata value.
* @param bool $unique Optional, default is false. Whether the same key should not be added.
* @return int|bool Meta ID on success, false on failure.
*/
function add_comment_meta($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://codex.wordpress.org/Function_Reference/delete_comment_meta
*
* @param int $comment_id comment ID
* @param string $meta_key Metadata name.
* @param mixed $meta_value Optional. Metadata value.
* @return bool True on success, false on failure.
*/
function delete_comment_meta($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://codex.wordpress.org/Function_Reference/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 Whether to return a single value.
* @return mixed Will be an array if $single is false. Will be value of meta data field if $single
* is true.
*/
function get_comment_meta($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://codex.wordpress.org/Function_Reference/update_comment_meta
*
* @param int $comment_id Comment ID.
* @param string $meta_key Metadata key.
* @param mixed $meta_value Metadata value.
* @param mixed $prev_value Optional. Previous value to check before removing.
* @return int|bool Meta ID if the key didn't exist, true on successful update, false on failure.
*/
function update_comment_meta($comment_id, $meta_key, $meta_value, $prev_value = '') {
return update_metadata('comment', $comment_id, $meta_key, $meta_value, $prev_value);
}
/**
* 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.
*
* @param WP_Comment $comment Comment object.
* @param object $user Comment author's object.
*
* @since 3.4.0
*/
function wp_set_comment_cookies($comment, $user) {
if ( $user->exists() )
return;
/**
* Filter the lifetime of the comment cookie in seconds.
*
* @since 2.8.0
*
* @param int $seconds Comment cookie lifetime. Default 30000000.
*/
$comment_cookie_lifetime = apply_filters( 'comment_cookie_lifetime', 30000000 );
$secure = ( 'https' === parse_url( home_url(), PHP_URL_SCHEME ) );
setcookie( 'comment_author_' . COOKIEHASH, $comment->comment_author, time() + $comment_cookie_lifetime, COOKIEPATH, COOKIE_DOMAIN, $secure );
setcookie( 'comment_author_email_' . COOKIEHASH, $comment->comment_author_email, time() + $comment_cookie_lifetime, COOKIEPATH, COOKIE_DOMAIN, $secure );
setcookie( 'comment_author_url_' . COOKIEHASH, esc_url($comment->comment_author_url), time() + $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] ) ) {
/**
* Filter 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] ) ) {
/**
* Filter 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] ) ) {
/**
* Filter 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
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param array $commentdata Contains information on the comment
* @return int|string Signifies the approval status (0|1|'spam')
*/
function wp_allow_comment( $commentdata ) {
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(
"OR 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 );
if ( defined( 'DOING_AJAX' ) ) {
die( __('Duplicate comment detected; it looks as though you&#8217;ve already said that!') );
}
wp_die( __( 'Duplicate comment detected; it looks as though you&#8217;ve already said that!' ), 409 );
}
/**
* Fires immediately before a comment is marked approved.
*
* Allows checking for comment flooding.
*
* @since 2.3.0
*
* @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.
*/
do_action(
'check_comment_flood',
$commentdata['comment_author_IP'],
$commentdata['comment_author_email'],
$commentdata['comment_date_gmt']
);
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_blacklist_check(
$commentdata['comment_author'],
$commentdata['comment_author_email'],
$commentdata['comment_author_url'],
$commentdata['comment_content'],
$commentdata['comment_author_IP'],
$commentdata['comment_agent']
) ) {
$approved = 'spam';
}
}
/**
* Filter a comment's approval status before it is set.
*
* @since 2.1.0
*
* @param bool|string $approved The approval status. Accepts 1, 0, or 'spam'.
* @param array $commentdata Comment data.
*/
$approved = apply_filters( 'pre_comment_approved', $approved, $commentdata );
return $approved;
}
/**
* Check whether comment flooding is occurring.
*
* Won't run, if current user can manage options, so to not block
* administrators.
*
* @since 2.3.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param string $ip Comment IP.
* @param string $email Comment author email address.
* @param string $date MySQL time string.
*/
function check_comment_flood_db( $ip, $email, $date ) {
global $wpdb;
// don't throttle admins or moderators
if ( current_user_can( 'manage_options' ) || current_user_can( 'moderate_comments' ) ) {
return;
}
$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);
/**
* Filter 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 ( defined('DOING_AJAX') )
die( __('You are posting comments too quickly. Slow down.') );
wp_die( __( 'You are posting comments too quickly. Slow down.' ), 429 );
}
}
}
/**
* Separates an array of comments into an array keyed by comment_type.
*
* @since 2.7.0
*
* @param array $comments Array of comments
* @return array Array of comments keyed by comment_type.
*/
function separate_comments(&$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
*
* @param array $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 ( !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
* @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 is '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 $max_depth If greater than 1, comment page will be determined for the top-level parent of
* `$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 $wpdb;
if ( !$comment = get_comment( $comment_ID ) )
return;
$defaults = array( 'type' => 'all', 'page' => '', 'per_page' => '', 'max_depth' => '' );
$args = wp_parse_args( $args, $defaults );
Force comment pagination on single posts. Previously, the 'page_comments' toggle allowed users to disable comment pagination. This toggle was only superficial, however. Even with 'page_comments' turned on, `comments_template()` loaded all of a post's comments into memory, and passed them to `wp_list_comments()` and `Walker_Comment`, the latter of which produced markup for only the current page of comments. In other words, it was possible to enable 'page_comments', thereby showing only a subset of a post's comments on a given page, but all comments continued to be loaded in the background. This technique scaled poorly. Posts with hundreds or thousands of comments would load slowly, or not at all, even when the 'comments_per_page' setting was set to a reasonable number. Recent changesets have addressed this problem through more efficient tree- walking, better descendant caching, and more selective queries for top-level post comments. The current changeset completes the project by addressing the root issue: that loading a post causes all of its comments to be loaded too. Here's the breakdown: * Comment pagination is now forced. Setting 'page_comments' to false leads to evil things when you have many comments. If you want to avoid pagination, set 'comments_per_page' to something high. * The 'page_comments' setting has been expunged from options-discussion.php, and from places in the codebase where it was referenced. For plugins relying on 'page_comments', we now force the value to `true` with a `pre_option` filter. * `comments_template()` now queries for an appropriately small number of comments. Usually, this means the `comments_per_page` value. * To preserve the current (odd) behavior for comment pagination links, some unholy hacks have been inserted into `comments_template()`. The ugliness is insulated in this function for backward compatibility and to minimize collateral damage. A side-effect is that, for certain settings of 'default_comments_page', up to 2x the value of `comments_per_page` might be fetched at a time. * In support of these changes, a `$format` parameter has been added to `WP_Comment::get_children()`. This param allows you to request a flattened array of comment children, suitable for feeding into `Walker_Comment`. * `WP_Query` loops are now informed about total available comment counts and comment pages by the `WP_Comment_Query` (`found_comments`, `max_num_pages`), instead of by `Walker_Comment`. Aside from radical performance improvements in the case of a post with many comments, this changeset fixes a bug that caused the first page of comments to be partial (`found_comments` % `comments_per_page`), rather than the last, as you'd expect. Props boonebgorges, wonderboymusic. Fixes #8071. Built from https://develop.svn.wordpress.org/trunk@34561 git-svn-id: http://core.svn.wordpress.org/trunk@34525 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2015-09-25 16:40:25 -04:00
if ( '' === $args['per_page'] )
$args['per_page'] = get_query_var('comments_per_page');
if ( empty($args['per_page']) ) {
$args['per_page'] = 0;
$args['page'] = 0;
}
if ( $args['per_page'] < 1 )
return 1;
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' => $comment->comment_post_ID,
'fields' => 'ids',
'status' => 'approve',
'date_query' => array(
array(
'column' => "$wpdb->comments.comment_date_gmt",
'before' => $comment->comment_date_gmt,
)
),
);
$older_comment_ids = get_comments( $comment_args );
$older_comment_count = count( $older_comment_ids );
// No older comments? Then it's page #1.
if ( 0 == $older_comment_count )
return 1;
// Divide comments older than this one by comments per page to get this comment's page number
return ceil( ( $older_comment_count + 1 ) / $args['per_page'] );
}
/**
* Does comment contain blacklisted characters or words.
*
* @since 1.5.0
*
* @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 IP address
* @param string $user_agent The author's browser user agent
* @return bool True if comment contains blacklisted content, false if comment does not
*/
function wp_blacklist_check($author, $email, $url, $comment, $user_ip, $user_agent) {
/**
* Fires before the comment is tested for blacklisted characters or words.
*
* @since 1.5.0
*
* @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_blacklist_check', $author, $email, $url, $comment, $user_ip, $user_agent );
$mod_keys = trim( get_option('blacklist_keys') );
if ( '' == $mod_keys )
return false; // If moderation keys are empty
$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, $user_ip)
|| preg_match($pattern, $user_agent)
)
return true;
}
return false;
}
/**
* Retrieve total comments for blog or single post.
*
* The properties of the returned object contain the 'moderated', 'approved',
* and spam comments for either the entire blog or single post. Those properties
* contain the amount of comments that match the status. The 'total_comments'
* property contains the integer of total comments.
*
* The comment stats are cached and then retrieved, if they already exist in the
* cache.
*
* @since 2.5.0
*
* @param int $post_id Optional. Post ID.
* @return object|array Comment stats.
*/
function wp_count_comments( $post_id = 0 ) {
$post_id = (int) $post_id;
/**
* Filter the comments count for a given post.
*
* @since 2.7.0
*
* @param array $count An empty array.
* @param int $post_id The post ID.
*/
$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 $force_delete Whether to bypass trash and force deletion. Default is false.
* @return bool True on success, false on failure.
*/
function wp_delete_comment($comment_id, $force_delete = false) {
global $wpdb;
if (!$comment = get_comment($comment_id))
return false;
if ( !$force_delete && EMPTY_TRASH_DAYS && !in_array( wp_get_comment_status( $comment ), array( 'trash', 'spam' ) ) )
return wp_trash_comment($comment_id);
/**
* Fires immediately before a comment is deleted from the database.
*
* @since 1.2.0
*
* @param int $comment_id The comment ID.
*/
do_action( 'delete_comment', $comment->comment_ID );
// 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
*
* @param int $comment_id The comment ID.
*/
do_action( 'deleted_comment', $comment->comment_ID );
$post_id = $comment->comment_post_ID;
if ( $post_id && $comment->comment_approved == 1 )
wp_update_comment_count($post_id);
clean_comment_cache( $comment->comment_ID );
/** This action is documented in wp-includes/comment-functions.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($comment_id, true);
if ( !$comment = get_comment($comment_id) )
return false;
/**
* Fires immediately before a comment is sent to the Trash.
*
* @since 2.9.0
*
* @param int $comment_id The comment ID.
*/
do_action( 'trash_comment', $comment->comment_ID );
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
*
* @param int $comment_id The comment ID.
*/
do_action( 'trashed_comment', $comment->comment_ID );
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
*
* @param int $comment_id The comment ID.
*/
do_action( 'untrash_comment', $comment->comment_ID );
$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
*
* @param int $comment_id The comment ID.
*/
do_action( 'untrashed_comment', $comment->comment_ID );
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
*
* @param int $comment_id The comment ID.
*/
do_action( 'spam_comment', $comment->comment_ID );
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
*
* @param int $comment_id The comment ID.
*/
do_action( 'spammed_comment', $comment->comment_ID );
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
*
* @param int $comment_id The comment ID.
*/
do_action( 'unspam_comment', $comment->comment_ID );
$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
*
* @param int $comment_id The comment ID.
*/
do_action( 'unspammed_comment', $comment->comment_ID );
return true;
}
return false;
}
/**
* The status of a comment by ID.
*
* @since 1.0.0
*
* @param int|WP_Comment $comment_id Comment ID or WP_Comment object
* @return false|string Status might be 'trash', 'approved', 'unapproved', 'spam'. False on failure.
*/
function wp_get_comment_status($comment_id) {
$comment = get_comment($comment_id);
if ( !$comment )
return false;
$approved = $comment->comment_approved;
if ( $approved == null )
return false;
elseif ( $approved == '1' )
return 'approved';
elseif ( $approved == '0' )
return 'unapproved';
elseif ( $approved == 'spam' )
return 'spam';
elseif ( $approved == 'trash' )
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
* 'transition_comment_status' with new status, old status, and comment data. The
* next action called is 'comment_OLDSTATUS_to_NEWSTATUS' the NEWSTATUS is the
* $new_status parameter and the OLDSTATUS is $old_status parameter; it has the
* comment data.
*
* The final action will run whether or not the comment statuses are the same. The
* action is named 'comment_NEWSTATUS_COMMENTTYPE', NEWSTATUS is from the $new_status
* parameter and COMMENTTYPE is comment_type comment data.
*
* @since 2.7.0
*
* @param string $new_status New comment status.
* @param string $old_status Previous comment status.
* @param object $comment Comment data.
*/
function wp_transition_comment_status($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 object $comment The comment data.
*/
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 );
}
/**
* 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 Comment author, email, url respectively.
*/
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];
/**
* Filter 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 author of the comment. Default empty.
* @type string $comment_author_email The email address of the `$comment_author`. Default empty.
* @type string $comment_author_url The URL address of the `$comment_author`. Default empty.
* }
*/
return apply_filters( 'wp_get_current_commenter', compact('comment_author', 'comment_author_email', 'comment_author_url') );
}
/**
* Inserts a comment into the database.
*
* @since 2.0.0
* @since 4.4.0 Introduced `$comment_meta` argument.
*
* @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 empty.
* @type string $comment_type Comment type. Default empty.
* @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'] ) ? '' : $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 = ! isset( $data['comment_type'] ) ? '' : $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 ( $comment_approved == 1 ) {
wp_update_comment_count( $comment_post_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 );
wp_cache_set( 'last_changed', microtime(), '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'] ) ) {
/**
* Filter 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-functions.php */
$commentdata['user_id'] = apply_filters( 'pre_user_id', $commentdata['user_id'] );
}
/**
* Filter the comment author's browser user agent before it is set.
*
* @since 1.5.0
*
* @param int $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-functions.php */
$commentdata['comment_author'] = apply_filters( 'pre_comment_author_name', $commentdata['comment_author'] );
/**
* Filter the comment content before it is set.
*
* @since 1.5.0
*
* @param int $comment_content The comment content.
*/
$commentdata['comment_content'] = apply_filters( 'pre_comment_content', $commentdata['comment_content'] );
/**
* Filter the comment author's IP before it is set.
*
* @since 1.5.0
*
* @param int $comment_author_ip The comment author's IP.
*/
$commentdata['comment_author_IP'] = apply_filters( 'pre_comment_user_ip', $commentdata['comment_author_IP'] );
/** This filter is documented in wp-includes/comment-functions.php */
$commentdata['comment_author_url'] = apply_filters( 'pre_comment_author_url', $commentdata['comment_author_url'] );
/** This filter is documented in wp-includes/comment-functions.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 - $time_lastcomment) < 15 )
return true;
return false;
}
/**
* Adds a new comment to the database.
*
* Filters new comment to ensure that the fields are sanitized and valid before
* inserting comment into database. Calls 'comment_post' action with comment ID
* and whether comment is approved by WordPress. Also has 'preprocess_comment'
* filter for processing the comment data before the function handles it.
*
* We use REMOTE_ADDR here directly. If you are behind a proxy, you should ensure
* that it is properly set, such as in wp-config.php, for your environment.
* See {@link https://core.trac.wordpress.org/ticket/9235}
*
* @since 1.5.0
* @since 4.3.0 'comment_agent' and 'comment_author_IP' can be set via `$commentdata`.
*
* @see wp_insert_comment()
*
* @global wpdb $wpdb
*
* @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 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.
* }
* @return int|false The ID of the comment on success, false on failure.
*/
function wp_new_comment( $commentdata ) {
global $wpdb;
if ( isset( $commentdata['user_ID'] ) ) {
$commentdata['user_id'] = $commentdata['user_ID'] = (int) $commentdata['user_ID'];
}
$prefiltered_user_id = ( isset( $commentdata['user_id'] ) ) ? (int) $commentdata['user_id'] : 0;
/**
* Filter a comment's data before it is sanitized and inserted into the database.
*
* @since 1.5.0
*
* @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'] = $commentdata['user_ID'] = (int) $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 = ( 0 < $commentdata['comment_parent'] ) ? wp_get_comment_status($commentdata['comment_parent']) : '';
$commentdata['comment_parent'] = ( 'approved' == $parent_status || 'unapproved' == $parent_status ) ? $commentdata['comment_parent'] : 0;
if ( ! isset( $commentdata['comment_author_IP'] ) ) {
$commentdata['comment_author_IP'] = $_SERVER['REMOTE_ADDR'];
}
$commentdata['comment_author_IP'] = preg_replace( '/[^0-9a-fA-F:., ]/', '', $commentdata['comment_author_IP'] );
if ( ! isset( $commentdata['comment_agent'] ) ) {
$commentdata['comment_agent'] = isset( $_SERVER['HTTP_USER_AGENT'] ) ? $_SERVER['HTTP_USER_AGENT']: '';
}
$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 );
}
$commentdata = wp_filter_comment($commentdata);
$commentdata['comment_approved'] = wp_allow_comment($commentdata);
$comment_ID = wp_insert_comment($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 );
$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
*
* @param int $comment_ID The comment ID.
* @param int|string $comment_approved 1 if the comment is approved, 0 if not, 'spam' if spam.
*/
do_action( 'comment_post', $comment_ID, $commentdata['comment_approved'] );
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.
if ( '0' != $comment->comment_approved ) {
return false;
}
return wp_notify_moderator( $comment_ID );
}
/**
* Send a notification of a new comment to the post author.
*
* @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_postauthor( $comment_ID ) {
$comment = get_comment( $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 ( ! get_option( 'comments_notify' ) ) {
return false;
}
// Only send notifications for approved comments.
if ( ! isset( $comment->comment_approved ) || 'spam' === $comment->comment_approved || ! $comment->comment_approved ) {
return false;
}
return wp_notify_postauthor( $comment_ID );
}
/**
* Sets the status of a comment.
*
* The '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
*
* @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 $wp_error Whether to return a WP_Error object if there is a failure. Default is false.
* @return bool|WP_Error True on success, false or WP_Error on failure.
*/
function wp_set_comment_status($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 before transitioning a comment's status from one to another
* in the database.
*
* @since 1.5.0
*
* @param int $comment_id Comment ID.
* @param string|bool $comment_status Current comment status. Possible values include
* 'hold', 'approve', 'spam', 'trash', or false.
*/
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
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param array $commentarr Contains information on the comment.
* @return int Comment was updated if value is 1, or was not updated if value is 0.
*/
function wp_update_comment($commentarr) {
global $wpdb;
// First, get all of the original fields
$comment = get_comment($commentarr['comment_ID'], ARRAY_A);
if ( empty( $comment ) ) {
return 0;
}
// Make sure that the comment post ID is valid (if specified).
if ( isset( $commentarr['comment_post_ID'] ) && ! get_post( $commentarr['comment_post_ID'] ) ) {
return 0;
}
// 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 );
/**
* Filter 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'];
$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' );
$data = wp_array_slice_assoc( $data, $keys );
$rval = $wpdb->update( $wpdb->comments, $data, compact( 'comment_ID' ) );
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
*
* @param int $comment_ID The comment ID.
*/
do_action( 'edit_comment', $comment_ID );
$comment = get_comment($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
* @staticvar bool $_defer
*
* @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
*
* @staticvar array $_deferred
*
* @param int $post_id Post ID
* @param bool $do_deferred Whether to process previously deferred post comment counts
* @return bool|void True on success, false on failure
*/
function wp_update_comment_count($post_id, $do_deferred=false) {
static $_deferred = array();
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 on '0' $post_id or if post with ID does not exist.
*/
function wp_update_comment_count_now($post_id) {
global $wpdb;
$post_id = (int) $post_id;
if ( !$post_id )
return false;
wp_cache_delete( 'comments-0', 'counts' );
wp_cache_delete( "comments-{$post_id}", 'counts' );
if ( !$post = get_post($post_id) )
return false;
$old = (int) $post->comment_count;
$new = (int) $wpdb->get_var( $wpdb->prepare("SELECT COUNT(*) FROM $wpdb->comments WHERE comment_post_ID = %d AND comment_approved = '1'", $post_id) );
$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-functions.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 int $deprecated Not Used.
* @return false|string False on failure, string containing URI on success.
*/
function discover_pingback_server_uri( $url, $deprecated = '' ) {
if ( !empty( $deprecated ) )
_deprecated_argument( __FUNCTION__, '2.7' );
$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 an URL. This should never happen.
return false;
//Do not search for a pingback server on our own uploads
$uploads_dir = wp_upload_dir();
if ( 0 === strpos($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
*
* @global wpdb $wpdb WordPress database abstraction object.
*/
function do_all_pings() {
global $wpdb;
// Do pingbacks
while ($ping = $wpdb->get_row("SELECT ID, post_content, meta_id FROM {$wpdb->posts}, {$wpdb->postmeta} WHERE {$wpdb->posts}.ID = {$wpdb->postmeta}.post_id AND {$wpdb->postmeta}.meta_key = '_pingme' LIMIT 1")) {
delete_metadata_by_mid( 'post', $ping->meta_id );
pingback( $ping->post_content, $ping->ID );
}
// Do Enclosures
while ($enclosure = $wpdb->get_row("SELECT ID, post_content, meta_id FROM {$wpdb->posts}, {$wpdb->postmeta} WHERE {$wpdb->posts}.ID = {$wpdb->postmeta}.post_id AND {$wpdb->postmeta}.meta_key = '_encloseme' LIMIT 1")) {
delete_metadata_by_mid( 'post', $enclosure->meta_id );
do_enclose( $enclosure->post_content, $enclosure->ID );
}
// Do Trackbacks
$trackbacks = $wpdb->get_col("SELECT ID FROM $wpdb->posts WHERE to_ping <> '' AND post_status = 'publish'");
if ( is_array($trackbacks) )
foreach ( $trackbacks as $trackback )
do_trackbacks($trackback);
//Do Update Services/Generic Pings
generic_ping();
}
/**
* Perform trackbacks.
*
* @since 1.5.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param int $post_id Post ID to do trackbacks on.
*/
function do_trackbacks($post_id) {
global $wpdb;
$post = get_post( $post_id );
$to_ping = get_to_ping($post_id);
$pinged = get_pung($post_id);
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(']]>', ']]&gt;', $excerpt);
$excerpt = wp_html_excerpt($excerpt, 252, '&#8230;');
/** 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, $pinged) ) {
trackback($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
*
* @global string $wp_version
*
* @param string $content Post content to check for links.
* @param int $post_ID Post ID.
*/
function pingback($content, $post_ID) {
global $wp_version;
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();
$pung = get_pung($post_ID);
// 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 thru 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 <link/>
foreach ( (array) $post_links_temp as $link_test ) :
if ( !in_array($link_test, $pung) && (url_to_postid($link_test) != $post_ID) // If we haven't pung it already and it isn't a link to itself
&& !is_local_attachment($link_test) ) : // Also, let's never ping local attachments.
if ( $test = @parse_url($link_test) ) {
if ( isset($test['query']) )
$post_links[] = $link_test;
elseif ( isset( $test['path'] ) && ( $test['path'] != '/' ) && ( $test['path'] != '' ) )
$post_links[] = $link_test;
}
endif;
endforeach;
$post_links = array_unique( $post_links );
/**
* Fires just before pinging back links found in a post.
*
* @since 2.0.0
*
* @param array &$post_links An array of post links to be checked, passed by reference.
* @param array &$pung Whether a link has already been 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_ID);
// 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;
/**
* Filter 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/' . $wp_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_ID, $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
*
* @global string $wp_version
*
* @param string $server Host of blog to connect to.
* @param string $path Path to send the ping.
*/
function weblog_ping($server = '', $path = '') {
global $wp_version;
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;
$client->useragent .= ' -- WordPress/'.$wp_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 http://www.hixie.ch/specs/pingback/pingback#TOC3
*
* @param IXR_Error $ixr_error
* @return IXR_Error
*/
function xmlrpc_pingback_error( $ixr_error ) {
if ( $ixr_error->code === 48 )
return $ixr_error;
return new IXR_Error( 0, '' );
}
//
// Cache
//
/**
* Removes comment ID from the comment cache.
*
* @since 2.3.0
*
* @param int|array $ids Comment ID or array of comment IDs to remove from cache
*/
function clean_comment_cache($ids) {
foreach ( (array) $ids as $id ) {
wp_cache_delete( $id, 'comment' );
}
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 array $comments Array of comment row 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 array $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)", join( ",", array_map( 'intval', $non_cached_ids ) ) ) );
update_comment_cache( $fresh_comments, $update_meta_cache );
}
}
/**
* Lazy load comment meta when inside of a `WP_Query` loop.
*
* @since 4.4.0
*
* @param null $check The `$check` param passed from the 'pre_comment_metadata' hook.
* @param int $comment_id ID of the comment whose metadata is being cached.
* @return null In order not to short-circuit `get_metadata()`.
*/
function wp_lazyload_comment_meta( $check, $comment_id ) {
global $wp_query;
if ( ! empty( $wp_query->comments ) ) {
// Don't use `wp_list_pluck()` to avoid by-reference manipulation.
$comment_ids = array();
foreach ( $wp_query->comments as $comment ) {
$comment_ids[] = $comment->comment_ID;
}
update_meta_cache( 'comment', $comment_ids );
}
return $check;
}
//
// Internal
//
/**
* Close comments on old posts on the fly, without any extra DB queries. Hooked to the_posts.
*
* @access private
* @since 2.7.0
*
* @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;
/**
* Filter the list of post types to automatically close comments for.
*
* @since 3.2.0
*
* @param array $post_types An array of registered post types. Default array with 'post'.
*/
$post_types = apply_filters( 'close_comments_for_post_types', array( 'post' ) );
if ( ! in_array( $posts[0]->post_type, $post_types ) )
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.
*
* @access private
* @since 2.7.0
*
* @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-functions.php */
$post_types = apply_filters( 'close_comments_for_post_types', array( 'post' ) );
if ( ! in_array( $post->post_type, $post_types ) )
return $open;
if ( time() - strtotime( $post->post_date_gmt ) > ( $days_old * DAY_IN_SECONDS ) )
return false;
return $open;
}