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<?php
/**
* Manages WordPress comments
*
* @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 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 wpdb $wpdb WordPress database abstraction object.
*
* @param object|string|int $comment Comment to retrieve.
* @param string $output Optional. OBJECT or ARRAY_A or ARRAY_N constants.
* @return object|array|null Depends on $output value.
*/
function get_comment(&$comment, $output = OBJECT) {
global $wpdb;
if ( empty($comment) ) {
if ( isset($GLOBALS['comment']) )
$_comment = & $GLOBALS['comment'];
else
$_comment = null;
} elseif ( is_object($comment) ) {
wp_cache_add($comment->comment_ID, $comment, 'comment');
$_comment = $comment;
} else {
if ( isset($GLOBALS['comment']) && ($GLOBALS['comment']->comment_ID == $comment) ) {
$_comment = & $GLOBALS['comment'];
} elseif ( ! $_comment = wp_cache_get($comment, 'comment') ) {
$_comment = $wpdb->get_row($wpdb->prepare("SELECT * FROM $wpdb->comments WHERE comment_ID = %d LIMIT 1", $comment));
if ( ! $_comment )
return null;
wp_cache_add($_comment->comment_ID, $_comment, 'comment');
}
}
/**
* 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 ) {
$__comment = get_object_vars($_comment);
return $__comment;
} elseif ( $output == ARRAY_N ) {
$__comment = array_values(get_object_vars($_comment));
return $__comment;
} else {
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 );
}
/**
* WordPress Comment Query class.
*
* See WP_Comment_Query::__construct() for accepted arguments.
*
* @since 3.1.0
*/
class WP_Comment_Query {
/**
* SQL for database query.
*
* @since 4.0.1
* @access public
* @var string
*/
public $request;
/**
* Metadata query container
*
* @since 3.5.0
* @access public
* @var object WP_Meta_Query
*/
public $meta_query = false;
/**
* Date query container
*
* @since 3.7.0
* @access public
* @var object WP_Date_Query
*/
public $date_query = false;
/**
* Query vars set by the user.
*
* @since 3.1.0
* @access public
* @var array
*/
public $query_vars;
/**
* Default values for query vars.
*
* @since 4.2.0
* @access public
* @var array
*/
public $query_var_defaults;
/**
* List of comments located by the query.
*
* @since 4.0.0
* @access public
* @var array
*/
public $comments;
/**
* Make private/protected methods readable for backwards compatibility.
*
* @since 4.0.0
* @access public
*
* @param callable $name Method to call.
* @param array $arguments Arguments to pass when calling.
* @return mixed|bool Return value of the callback, false otherwise.
*/
public function __call( $name, $arguments ) {
if ( 'get_search_sql' === $name ) {
return call_user_func_array( array( $this, $name ), $arguments );
}
return false;
}
/**
* Constructor.
*
* Sets up the comment query, based on the query vars passed.
*
* @since 4.2.0
* @access public
*
* @param string|array $query {
* Optional. Array or query string of comment query parameters. Default empty.
*
* @type string $author_email Comment author email address. Default empty.
* @type array $author__in Array of author IDs to include comments for. Default empty.
* @type array $author__not_in Array of author IDs to exclude comments for. Default empty.
* @type array $comment__in Array of comment IDs to include. Default empty.
* @type array $comment__not_in Array of comment IDs to exclude. Default empty.
* @type bool $count Whether to return a comment count (true) or array of comment
* objects (false). Default false.
* @type array $date_query Date query clauses to limit comments by. See WP_Date_Query.
* Default null.
* @type string $fields Comment fields to return. Accepts 'ids' for comment IDs only or
* empty for all fields. Default empty.
* @type int $ID Currently unused.
* @type array $include_unapproved Array of IDs or email addresses of users whose unapproved comments
* will be returned by the query regardless of `$status`. Default empty.
* @type int $karma Karma score to retrieve matching comments for. Default empty.
* @type string $meta_key Include comments with a matching comment meta key. Default empty.
* @type string $meta_value Include comments with a matching comment meta value. Requires
* `$meta_key` to be set. Default empty.
* @type array $meta_query Meta query clauses to limit retrieved comments by.
* See WP_Meta_Query. Default empty.
* @type int $number Maximum number of comments to retrieve. Default null (no limit).
* @type int $offset Number of comments to offset the query. Used to build LIMIT clause.
* Default 0.
* @type string|array $orderby Comment status or array of statuses. To use 'meta_value' or
* 'meta_value_num', `$meta_key` must also be defined. To sort by
* a specific `$meta_query` clause, use that clause's array key.
* Accepts 'comment_agent', 'comment_approved', 'comment_author',
* 'comment_author_email', 'comment_author_IP',
* 'comment_author_url', 'comment_content', 'comment_date',
* 'comment_date_gmt', 'comment_ID', 'comment_karma',
* 'comment_parent', 'comment_post_ID', 'comment_type', 'user_id',
* 'meta_value', 'meta_value_num', the value of $meta_key, and the
* array keys of `$meta_query`. Also accepts false, an empty array,
* or 'none' to disable `ORDER BY` clause.
* Default: 'comment_date_gmt'.
* @type string $order How to order retrieved comments. Accepts 'ASC', 'DESC'.
* Default: 'DESC'.
* @type int $parent Parent ID of comment to retrieve children of. Default empty.
* @type array $post_author__in Array of author IDs to retrieve comments for. Default empty.
* @type array $post_author__not_in Array of author IDs *not* to retrieve comments for. Default empty.
* @type int $post_ID Currently unused.
* @type int $post_id Limit results to those affiliated with a given post ID. Default 0.
* @type array $post__in Array of post IDs to include affiliated comments for. Default empty.
* @type array $post__not_in Array of post IDs to exclude affiliated comments for. Default empty.
* @type int $post_author Comment author ID to limit results by. Default empty.
* @type string $post_status Post status to retrieve affiliated comments for. Default empty.
* @type string $post_type Post type to retrieve affiliated comments for. Default empty.
* @type string $post_name Post name to retrieve affiliated comments for. Default empty.
* @type int $post_parent Post parent ID to retrieve affiliated comments for. Default empty.
* @type string $search Search term(s) to retrieve matching comments for. Default empty.
* @type string $status Comment status to limit results by. Accepts 'hold'
* (`comment_status=0`), 'approve' (`comment_status=1`), 'all', or a
* custom comment status. Default 'all'.
* @type string|array $type Include comments of a given type, or array of types. Accepts
* 'comment', 'pings' (includes 'pingback' and 'trackback'), or any
* custom type string. Default empty.
* @type array $type__in Include comments from a given array of comment types. Default empty.
* @type array $type__not_in Exclude comments from a given array of comment types. Default empty.
* @type int $user_id Include comments for a specific user ID. Default empty.
* }
* @return WP_Comment_Query WP_Comment_Query instance.
*/
public function __construct( $query = '' ) {
$this->query_var_defaults = array(
'author_email' => '',
'author__in' => '',
'author__not_in' => '',
'include_unapproved' => '',
'fields' => '',
'ID' => '',
'comment__in' => '',
'comment__not_in' => '',
'karma' => '',
'number' => '',
'offset' => '',
'orderby' => '',
'order' => 'DESC',
'parent' => '',
'post_author__in' => '',
'post_author__not_in' => '',
'post_ID' => '',
'post_id' => 0,
'post__in' => '',
'post__not_in' => '',
'post_author' => '',
'post_name' => '',
'post_parent' => '',
'post_status' => '',
'post_type' => '',
'status' => 'all',
'type' => '',
'type__in' => '',
'type__not_in' => '',
'user_id' => '',
'search' => '',
'count' => false,
'meta_key' => '',
'meta_value' => '',
'meta_query' => '',
'date_query' => null, // See WP_Date_Query
);
if ( ! empty( $query ) ) {
$this->query( $query );
}
}
/**
* Parse arguments passed to the comment query with default query parameters.
*
* @since 4.2.0 Extracted from WP_Comment_Query::query().
*
* @access public
*
* @param string|array $query WP_Comment_Query arguments. See WP_Comment_Query::__construct()
*/
public function parse_query( $query = '' ) {
if ( empty( $query ) ) {
$query = $this->query_vars;
}
$this->query_vars = wp_parse_args( $query, $this->query_var_defaults );
do_action_ref_array( 'parse_comment_query', array( &$this ) );
}
/**
* Sets up the WordPress query for retrieving comments.
*
* @since 3.1.0
* @since 4.1.0 Introduced 'comment__in', 'comment__not_in', 'post_author__in',
* 'post_author__not_in', 'author__in', 'author__not_in', 'post__in',
* 'post__not_in', 'include_unapproved', 'type__in', and 'type__not_in'
* arguments to $query_vars.
* @since 4.2.0 Moved parsing to WP_Comment_Query::parse_query().
* @access public
*
* @param string|array $query Array or URL query string of parameters.
* @return array List of comments.
*/
public function query( $query ) {
$this->query_vars = wp_parse_args( $query );
return $this->get_comments();
}
/**
* Get a list of comments matching the query vars.
*
* @since 4.2.0
* @access public
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @return array The list of comments.
*/
public function get_comments() {
global $wpdb;
$groupby = '';
$this->parse_query();
// Parse meta query
$this->meta_query = new WP_Meta_Query();
$this->meta_query->parse_query_vars( $this->query_vars );
if ( ! empty( $this->meta_query->queries ) ) {
$meta_query_clauses = $this->meta_query->get_sql( 'comment', $wpdb->comments, 'comment_ID', $this );
}
/**
* Fires before comments are retrieved.
*
* @since 3.1.0
*
* @param WP_Comment_Query &$this Current instance of WP_Comment_Query, passed by reference.
*/
do_action_ref_array( 'pre_get_comments', array( &$this ) );
// $args can include anything. Only use the args defined in the query_var_defaults to compute the key.
$key = md5( serialize( wp_array_slice_assoc( $this->query_vars, array_keys( $this->query_var_defaults ) ) ) );
$last_changed = wp_cache_get( 'last_changed', 'comment' );
if ( ! $last_changed ) {
$last_changed = microtime();
wp_cache_set( 'last_changed', $last_changed, 'comment' );
}
$cache_key = "get_comments:$key:$last_changed";
if ( $cache = wp_cache_get( $cache_key, 'comment' ) ) {
$this->comments = $cache;
return $this->comments;
}
$where = array();
// Assemble clauses related to 'comment_approved'.
$approved_clauses = array();
// 'status' accepts an array or a comma-separated string.
$status_clauses = array();
$statuses = $this->query_vars['status'];
if ( ! is_array( $statuses ) ) {
$statuses = preg_split( '/[\s,]+/', $statuses );
}
// 'any' overrides other statuses.
if ( ! in_array( 'any', $statuses ) ) {
foreach ( $statuses as $status ) {
switch ( $status ) {
case 'hold' :
$status_clauses[] = "comment_approved = '0'";
break;
case 'approve' :
$status_clauses[] = "comment_approved = '1'";
break;
case 'all' :
case '' :
$status_clauses[] = "( comment_approved = '0' OR comment_approved = '1' )";
break;
default :
$status_clauses[] = $wpdb->prepare( "comment_approved = %s", $status );
break;
}
}
if ( ! empty( $status_clauses ) ) {
$approved_clauses[] = '( ' . implode( ' OR ', $status_clauses ) . ' )';
}
}
// User IDs or emails whose unapproved comments are included, regardless of $status.
if ( ! empty( $this->query_vars['include_unapproved'] ) ) {
$include_unapproved = $this->query_vars['include_unapproved'];
// Accepts arrays or comma-separated strings.
if ( ! is_array( $include_unapproved ) ) {
$include_unapproved = preg_split( '/[\s,]+/', $include_unapproved );
}
$unapproved_ids = $unapproved_emails = array();
foreach ( $include_unapproved as $unapproved_identifier ) {
// Numeric values are assumed to be user ids.
if ( is_numeric( $unapproved_identifier ) ) {
$approved_clauses[] = $wpdb->prepare( "( user_id = %d AND comment_approved = '0' )", $unapproved_identifier );
// Otherwise we match against email addresses.
} else {
$approved_clauses[] = $wpdb->prepare( "( comment_author_email = %s AND comment_approved = '0' )", $unapproved_identifier );
}
}
}
// Collapse comment_approved clauses into a single OR-separated clause.
if ( ! empty( $approved_clauses ) ) {
if ( 1 === count( $approved_clauses ) ) {
$where[] = $approved_clauses[0];
} else {
$where[] = '( ' . implode( ' OR ', $approved_clauses ) . ' )';
}
}
$order = ( 'ASC' == strtoupper( $this->query_vars['order'] ) ) ? 'ASC' : 'DESC';
// Disable ORDER BY with 'none', an empty array, or boolean false.
if ( in_array( $this->query_vars['orderby'], array( 'none', array(), false ), true ) ) {
$orderby = '';
} elseif ( ! empty( $this->query_vars['orderby'] ) ) {
$ordersby = is_array( $this->query_vars['orderby'] ) ?
$this->query_vars['orderby'] :
preg_split( '/[,\s]/', $this->query_vars['orderby'] );
$orderby_array = array();
$found_orderby_comment_ID = false;
foreach ( $ordersby as $_key => $_value ) {
if ( ! $_value ) {
continue;
}
if ( is_int( $_key ) ) {
$_orderby = $_value;
$_order = $order;
} else {
$_orderby = $_key;
$_order = $_value;
}
if ( ! $found_orderby_comment_ID && 'comment_ID' === $_orderby ) {
$found_orderby_comment_ID = true;
}
$parsed = $this->parse_orderby( $_orderby );
if ( ! $parsed ) {
continue;
}
$orderby_array[] = $parsed . ' ' . $this->parse_order( $_order );
}
// If no valid clauses were found, order by comment_date_gmt.
if ( empty( $orderby_array ) ) {
$orderby_array[] = "$wpdb->comments.comment_date_gmt $order";
}
// To ensure determinate sorting, always include a comment_ID clause.
if ( ! $found_orderby_comment_ID ) {
$comment_ID_order = '';
// Inherit order from comment_date or comment_date_gmt, if available.
foreach ( $orderby_array as $orderby_clause ) {
if ( preg_match( '/comment_date(?:_gmt)*\ (ASC|DESC)/', $orderby_clause, $match ) ) {
$comment_ID_order = $match[1];
break;
}
}
// If no date-related order is available, use the date from the first available clause.
if ( ! $comment_ID_order ) {
foreach ( $orderby_array as $orderby_clause ) {
if ( false !== strpos( 'ASC', $orderby_clause ) ) {
$comment_ID_order = 'ASC';
} else {
$comment_ID_order = 'DESC';
}
break;
}
}
// Default to DESC.
if ( ! $comment_ID_order ) {
$comment_ID_order = 'DESC';
}
$orderby_array[] = "$wpdb->comments.comment_ID $comment_ID_order";
}
$orderby = implode( ', ', $orderby_array );
} else {
$orderby = "$wpdb->comments.comment_date_gmt $order";
}
$number = absint( $this->query_vars['number'] );
$offset = absint( $this->query_vars['offset'] );
if ( ! empty( $number ) ) {
if ( $offset ) {
$limits = 'LIMIT ' . $offset . ',' . $number;
} else {
$limits = 'LIMIT ' . $number;
}
} else {
$limits = '';
}
if ( $this->query_vars['count'] ) {
$fields = 'COUNT(*)';
} else {
switch ( strtolower( $this->query_vars['fields'] ) ) {
case 'ids':
$fields = "$wpdb->comments.comment_ID";
break;
default:
$fields = "*";
break;
}
}
$join = '';
$post_id = absint( $this->query_vars['post_id'] );
if ( ! empty( $post_id ) ) {
$where[] = $wpdb->prepare( 'comment_post_ID = %d', $post_id );
}
// Parse comment IDs for an IN clause.
if ( ! empty( $this->query_vars['comment__in'] ) ) {
$where[] = 'comment_ID IN ( ' . implode( ',', wp_parse_id_list( $this->query_vars['comment__in'] ) ) . ' )';
}
// Parse comment IDs for a NOT IN clause.
if ( ! empty( $this->query_vars['comment__not_in'] ) ) {
$where[] = 'comment_ID NOT IN ( ' . implode( ',', wp_parse_id_list( $this->query_vars['comment__not_in'] ) ) . ' )';
}
// Parse comment post IDs for an IN clause.
if ( ! empty( $this->query_vars['post__in'] ) ) {
$where[] = 'comment_post_ID IN ( ' . implode( ',', wp_parse_id_list( $this->query_vars['post__in'] ) ) . ' )';
}
// Parse comment post IDs for a NOT IN clause.
if ( ! empty( $this->query_vars['post__not_in'] ) ) {
$where[] = 'comment_post_ID NOT IN ( ' . implode( ',', wp_parse_id_list( $this->query_vars['post__not_in'] ) ) . ' )';
}
if ( '' !== $this->query_vars['author_email'] ) {
$where[] = $wpdb->prepare( 'comment_author_email = %s', $this->query_vars['author_email'] );
}
if ( '' !== $this->query_vars['karma'] ) {
$where[] = $wpdb->prepare( 'comment_karma = %d', $this->query_vars['karma'] );
}
// Filtering by comment_type: 'type', 'type__in', 'type__not_in'.
$raw_types = array(
'IN' => array_merge( (array) $this->query_vars['type'], (array) $this->query_vars['type__in'] ),
'NOT IN' => (array) $this->query_vars['type__not_in'],
);
$comment_types = array();
foreach ( $raw_types as $operator => $_raw_types ) {
$_raw_types = array_unique( $_raw_types );
foreach ( $_raw_types as $type ) {
switch ( $type ) {
// An empty translates to 'all', for backward compatibility
case '':
case 'all' :
break;
case 'comment':
case 'comments':
$comment_types[ $operator ][] = "''";
break;
case 'pings':
$comment_types[ $operator ][] = "'pingback'";
$comment_types[ $operator ][] = "'trackback'";
break;
default:
$comment_types[ $operator ][] = $wpdb->prepare( '%s', $type );
break;
}
}
if ( ! empty( $comment_types[ $operator ] ) ) {
$types_sql = implode( ', ', $comment_types[ $operator ] );
$where[] = "comment_type $operator ($types_sql)";
}
}
if ( '' !== $this->query_vars['parent'] ) {
$where[] = $wpdb->prepare( 'comment_parent = %d', $this->query_vars['parent'] );
}
if ( is_array( $this->query_vars['user_id'] ) ) {
$where[] = 'user_id IN (' . implode( ',', array_map( 'absint', $this->query_vars['user_id'] ) ) . ')';
} elseif ( '' !== $this->query_vars['user_id'] ) {
$where[] = $wpdb->prepare( 'user_id = %d', $this->query_vars['user_id'] );
}
if ( '' !== $this->query_vars['search'] ) {
$search_sql = $this->get_search_sql(
$this->query_vars['search'],
array( 'comment_author', 'comment_author_email', 'comment_author_url', 'comment_author_IP', 'comment_content' )
);
// Strip leading 'AND'.
$where[] = preg_replace( '/^\s*AND\s*/', '', $search_sql );
}
// If any post-related query vars are passed, join the posts table.
$join_posts_table = false;
$plucked = wp_array_slice_assoc( $this->query_vars, array( 'post_author', 'post_name', 'post_parent', 'post_status', 'post_type' ) );
$post_fields = array_filter( $plucked );
if ( ! empty( $post_fields ) ) {
$join_posts_table = true;
foreach ( $post_fields as $field_name => $field_value ) {
// $field_value may be an array.
$esses = array_fill( 0, count( (array) $field_value ), '%s' );
$where[] = $wpdb->prepare( " {$wpdb->posts}.{$field_name} IN (" . implode( ',', $esses ) . ')', $field_value );
}
}
// Comment author IDs for an IN clause.
if ( ! empty( $this->query_vars['author__in'] ) ) {
$where[] = 'user_id IN ( ' . implode( ',', wp_parse_id_list( $this->query_vars['author__in'] ) ) . ' )';
}
// Comment author IDs for a NOT IN clause.
if ( ! empty( $this->query_vars['author__not_in'] ) ) {
$where[] = 'user_id NOT IN ( ' . implode( ',', wp_parse_id_list( $this->query_vars['author__not_in'] ) ) . ' )';
}
// Post author IDs for an IN clause.
if ( ! empty( $this->query_vars['post_author__in'] ) ) {
$join_posts_table = true;
$where[] = 'post_author IN ( ' . implode( ',', wp_parse_id_list( $this->query_vars['post_author__in'] ) ) . ' )';
}
// Post author IDs for a NOT IN clause.
if ( ! empty( $this->query_vars['post_author__not_in'] ) ) {
$join_posts_table = true;
$where[] = 'post_author NOT IN ( ' . implode( ',', wp_parse_id_list( $this->query_vars['post_author__not_in'] ) ) . ' )';
}
if ( $join_posts_table ) {
$join = "JOIN $wpdb->posts ON $wpdb->posts.ID = $wpdb->comments.comment_post_ID";
}
if ( ! empty( $meta_query_clauses ) ) {
$join .= $meta_query_clauses['join'];
// Strip leading 'AND'.
$where[] = preg_replace( '/^\s*AND\s*/', '', $meta_query_clauses['where'] );
if ( ! $this->query_vars['count'] ) {
$groupby = "{$wpdb->comments}.comment_ID";
}
}
$date_query = $this->query_vars['date_query'];
if ( ! empty( $date_query ) && is_array( $date_query ) ) {
$date_query_object = new WP_Date_Query( $date_query, 'comment_date' );
$where[] = preg_replace( '/^\s*AND\s*/', '', $date_query_object->get_sql() );
}
$where = implode( ' AND ', $where );
$pieces = array( 'fields', 'join', 'where', 'orderby', 'limits', 'groupby' );
/**
* Filter the comment query clauses.
*
* @since 3.1.0
*
* @param array $pieces A compacted array of comment query clauses.
* @param WP_Comment_Query &$this Current instance of WP_Comment_Query, passed by reference.
*/
$clauses = apply_filters_ref_array( 'comments_clauses', array( compact( $pieces ), &$this ) );
$fields = isset( $clauses[ 'fields' ] ) ? $clauses[ 'fields' ] : '';
$join = isset( $clauses[ 'join' ] ) ? $clauses[ 'join' ] : '';
$where = isset( $clauses[ 'where' ] ) ? $clauses[ 'where' ] : '';
$orderby = isset( $clauses[ 'orderby' ] ) ? $clauses[ 'orderby' ] : '';
$limits = isset( $clauses[ 'limits' ] ) ? $clauses[ 'limits' ] : '';
$groupby = isset( $clauses[ 'groupby' ] ) ? $clauses[ 'groupby' ] : '';
if ( $where ) {
$where = 'WHERE ' . $where;
}
if ( $groupby ) {
$groupby = 'GROUP BY ' . $groupby;
}
if ( $orderby ) {
$orderby = "ORDER BY $orderby";
}
$this->request = "SELECT $fields FROM $wpdb->comments $join $where $groupby $orderby $limits";
if ( $this->query_vars['count'] ) {
return $wpdb->get_var( $this->request );
}
if ( 'ids' == $this->query_vars['fields'] ) {
$this->comments = $wpdb->get_col( $this->request );
return array_map( 'intval', $this->comments );
}
$results = $wpdb->get_results( $this->request );
/**
* Filter the comment query results.
*
* @since 3.1.0
*
* @param array $results An array of comments.
* @param WP_Comment_Query &$this Current instance of WP_Comment_Query, passed by reference.
*/
$comments = apply_filters_ref_array( 'the_comments', array( $results, &$this ) );
wp_cache_add( $cache_key, $comments, 'comment' );
$this->comments = $comments;
return $this->comments;
}
/**
* Used internally to generate an SQL string for searching across multiple columns
*
* @access protected
* @since 3.1.0
*
* @param string $string
* @param array $cols
* @return string
*/
protected function get_search_sql( $string, $cols ) {
global $wpdb;
$like = '%' . $wpdb->esc_like( $string ) . '%';
$searches = array();
foreach ( $cols as $col ) {
$searches[] = $wpdb->prepare( "$col LIKE %s", $like );
}
return ' AND (' . implode(' OR ', $searches) . ')';
}
/**
* Parse and sanitize 'orderby' keys passed to the comment query.
*
* @since 4.2.0
* @access protected
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param string $orderby Alias for the field to order by.
* @return string|bool Value to used in the ORDER clause. False otherwise.
*/
protected function parse_orderby( $orderby ) {
global $wpdb;
$allowed_keys = array(
'comment_agent',
'comment_approved',
'comment_author',
'comment_author_email',
'comment_author_IP',
'comment_author_url',
'comment_content',
'comment_date',
'comment_date_gmt',
'comment_ID',
'comment_karma',
'comment_parent',
'comment_post_ID',
'comment_type',
'user_id',
);
if ( ! empty( $this->query_vars['meta_key'] ) ) {
$allowed_keys[] = $this->query_vars['meta_key'];
$allowed_keys[] = 'meta_value';
$allowed_keys[] = 'meta_value_num';
}
$meta_query_clauses = $this->meta_query->get_clauses();
if ( $meta_query_clauses ) {
$allowed_keys = array_merge( $allowed_keys, array_keys( $meta_query_clauses ) );
}
$parsed = false;
if ( $orderby == $this->query_vars['meta_key'] || $orderby == 'meta_value' ) {
$parsed = "$wpdb->commentmeta.meta_value";
} else if ( $orderby == 'meta_value_num' ) {
$parsed = "$wpdb->commentmeta.meta_value+0";
} else if ( in_array( $orderby, $allowed_keys ) ) {
if ( isset( $meta_query_clauses[ $orderby ] ) ) {
$meta_clause = $meta_query_clauses[ $orderby ];
$parsed = sprintf( "CAST(%s.meta_value AS %s)", esc_sql( $meta_clause['alias'] ), esc_sql( $meta_clause['cast'] ) );
} else {
$parsed = "$wpdb->comments.$orderby";
}
}
return $parsed;
}
/**
* Parse an 'order' query variable and cast it to ASC or DESC as necessary.
*
* @since 4.2.0
* @access protected
*
* @param string $order The 'order' query variable.
* @return string The sanitized 'order' query variable.
*/
protected function parse_order( $order ) {
if ( ! is_string( $order ) || empty( $order ) ) {
return 'DESC';
}
if ( 'ASC' === strtoupper( $order ) ) {
return 'ASC';
} else {
return 'DESC';
}
}
}
/**
* 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'),
);
return $status;
}
/**
* The date the last comment was modified.
*
* @since 1.5.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @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,
"total_comments" => 0
);
foreach ( $totals as $row ) {
switch ( $row['comment_approved'] ) {
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'];
break;
case 0:
$comment_count['awaiting_moderation'] = $row['total'];
$comment_count['total_comments'] += $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 object $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 mixed 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'] )
);
if ( $wpdb->get_var( $dupe ) ) {
/**
* 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’ve already said that!') );
}
wp_die( __( 'Duplicate comment detected; it looks as though you’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;
if ( current_user_can( 'manage_options' ) )
return; // don't throttle admins
$hour_ago = gmdate( 'Y-m-d H:i:s', time() - HOUR_IN_SECONDS );
if ( $lasttime = $wpdb->get_var( $wpdb->prepare( "SELECT `comment_date_gmt` FROM `$wpdb->comments` WHERE `comment_date_gmt` >= %s AND ( `comment_author_IP` = %s OR `comment_author_email` = %s ) ORDER BY `comment_date_gmt` DESC LIMIT 1", $hour_ago, $ip, $email ) ) ) {
$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
*
* @param array $comments Optional array of comment objects. Defaults to $wp_query->comments
* @param int $per_page Optional comments per page.
* @param boolean $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
*
* @param int $comment_ID Comment ID.
* @param array $args Optional args.
* @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 );
if ( '' === $args['per_page'] && get_option('page_comments') )
$args['per_page'] = get_query_var('comments_per_page');
if ( empty($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 );
$allowedtypes = array(
'comment' => '',
'pingback' => 'pingback',
'trackback' => 'trackback',
);
$comtypewhere = ( 'all' != $args['type'] && isset($allowedtypes[$args['type']]) ) ? " AND comment_type = '" . $allowedtypes[$args['type']] . "'" : '';
// Count comments older than this one
$oldercoms = $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(comment_ID) FROM $wpdb->comments WHERE comment_post_ID = %d AND comment_parent = 0 AND comment_approved = '1' AND comment_date_gmt < '%s'" . $comtypewhere, $comment->comment_post_ID, $comment->comment_date_gmt ) );
// No older comments? Then it's page #1.
if ( 0 == $oldercoms )
return 1;
// Divide comments older than this one by comments per page to get this comment's page number
return ceil( ( $oldercoms + 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 Comment stats.
*/
function wp_count_comments( $post_id = 0 ) {
global $wpdb;
$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.
*/
$stats = apply_filters( 'wp_count_comments', array(), $post_id );
if ( !empty($stats) )
return $stats;
$count = wp_cache_get("comments-{$post_id}", 'counts');
if ( false !== $count )
return $count;
$where = '';
if ( $post_id > 0 )
$where = $wpdb->prepare( "WHERE comment_post_ID = %d", $post_id );
$count = $wpdb->get_results( "SELECT comment_approved, COUNT( * ) AS num_comments FROM {$wpdb->comments} {$where} GROUP BY comment_approved", ARRAY_A );
$total = 0;
$approved = array('0' => 'moderated', '1' => 'approved', 'spam' => 'spam', 'trash' => 'trash', 'post-trashed' => 'post-trashed');
foreach ( (array) $count as $row ) {
// Don't count post-trashed toward totals
if ( 'post-trashed' != $row['comment_approved'] && 'trash' != $row['comment_approved'] )
$total += $row['num_comments'];
if ( isset( $approved[$row['comment_approved']] ) )
$stats[$approved[$row['comment_approved']]] = $row['num_comments'];
}
$stats['total_comments'] = $total;
foreach ( $approved as $key ) {
if ( empty($stats[$key]) )
$stats[$key] = 0;
}
$stats = (object) $stats;
wp_cache_set("comments-{$post_id}", $stats, 'counts');
return $stats;
}
/**
* 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 $comment_id Comment ID
* @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($comment_id), array( 'trash', 'spam' ) ) )
return wp_trash_comment($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_id );
// Move children up a level.
$children = $wpdb->get_col( $wpdb->prepare("SELECT comment_ID FROM $wpdb->comments WHERE comment_parent = %d", $comment_id) );
if ( !empty($children) ) {
$wpdb->update($wpdb->comments, array('comment_parent' => $comment->comment_parent), array('comment_parent' => $comment_id));
clean_comment_cache($children);
}
// Delete metadata
$meta_ids = $wpdb->get_col( $wpdb->prepare( "SELECT meta_id FROM $wpdb->commentmeta WHERE comment_id = %d", $comment_id ) );
foreach ( $meta_ids as $mid )
delete_metadata_by_mid( 'comment', $mid );
if ( ! $wpdb->delete( $wpdb->comments, array( 'comment_ID' => $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_id );
$post_id = $comment->comment_post_ID;
if ( $post_id && $comment->comment_approved == 1 )
wp_update_comment_count($post_id);
clean_comment_cache($comment_id);
/** This action is documented in wp-includes/comment.php */
do_action( 'wp_set_comment_status', $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 $comment_id Comment ID.
* @return bool True on success, false on failure.
*/
function wp_trash_comment($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', $comment_id );
if ( wp_set_comment_status($comment_id, 'trash') ) {
add_comment_meta($comment_id, '_wp_trash_meta_status', $comment->comment_approved);
add_comment_meta($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_id );
return true;
}
return false;
}
/**
* Removes a comment from the Trash
*
* @since 2.9.0
*
* @param int $comment_id Comment ID.
* @return bool True on success, false on failure.
*/
function wp_untrash_comment($comment_id) {
if ( ! (int)$comment_id )
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_id );
$status = (string) get_comment_meta($comment_id, '_wp_trash_meta_status', true);
if ( empty($status) )
$status = '0';
if ( wp_set_comment_status($comment_id, $status) ) {
delete_comment_meta($comment_id, '_wp_trash_meta_time');
delete_comment_meta($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_id );
return true;
}
return false;
}
/**
* Marks a comment as Spam
*
* @since 2.9.0
*
* @param int $comment_id Comment ID.
* @return bool True on success, false on failure.
*/
function wp_spam_comment($comment_id) {
if ( !$comment = get_comment($comment_id) )
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', $comment_id );
if ( wp_set_comment_status($comment_id, 'spam') ) {
add_comment_meta($comment_id, '_wp_trash_meta_status', $comment->comment_approved);
/**
* 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_id );
return true;
}
return false;
}
/**
* Removes a comment from the Spam
*
* @since 2.9.0
*
* @param int $comment_id Comment ID.
* @return bool True on success, false on failure.
*/
function wp_unspam_comment($comment_id) {
if ( ! (int)$comment_id )
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_id );
$status = (string) get_comment_meta($comment_id, '_wp_trash_meta_status', true);
if ( empty($status) )
$status = '0';
if ( wp_set_comment_status($comment_id, $status) ) {
delete_comment_meta($comment_id, '_wp_trash_meta_status');
/**
* 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_id );
return true;
}
return false;
}
/**
* The status of a comment by ID.
*
* @since 1.0.0
*
* @param int $comment_id Comment ID
* @return false|string Status might be 'trash', 'approved', 'unapproved', 'spam'. False on failure.
*/
function wp_get_comment_status($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 object $comment Comment object.
*/
do_action( "comment_{$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 obj $comment Comment object.
*/
do_action( "comment_{$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 string $comment_author Comment author's name.
* @param string $comment_author_email Comment author's email.
* @param string $comment_author_url Comment author's URL.
*/
return apply_filters( 'wp_get_current_commenter', compact('comment_author', 'comment_author_email', 'comment_author_url') );
}
/**
* Inserts a comment to the database.
*
* The available comment data key names are 'comment_author_IP', 'comment_date',
* 'comment_date_gmt', 'comment_parent', 'comment_approved', and 'user_id'.
*
* @since 2.0.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param array $commentdata Contains information on the comment.
* @return int|bool 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 );
/**
* Fires immediately after a comment is inserted into the database.
*
* @since 2.8.0
*
* @param int $id The comment ID.
* @param obj $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.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.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.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 '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
* @param array $commentdata Contains information on the comment.
* @return int|bool 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;
$commentdata['comment_author_IP'] = preg_replace( '/[^0-9a-fA-F:., ]/', '',$_SERVER['REMOTE_ADDR'] );
$commentdata['comment_agent'] = isset( $_SERVER['HTTP_USER_AGENT'] ) ? substr( $_SERVER['HTTP_USER_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 $comment_approved 1 (true) if the comment is approved, 0 (false) if not.
*/
do_action( 'comment_post', $comment_ID, $commentdata['comment_approved'] );
if ( 'spam' !== $commentdata['comment_approved'] ) { // If it's spam save it silently for later crunching
if ( '0' == $commentdata['comment_approved'] ) {
wp_notify_moderator( $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' ) && $commentdata['comment_approved'] ) {
wp_notify_postauthor( $comment_ID );
}
}
return $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
*
* @param int $comment_id Comment ID.
* @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';
if ( get_option('comments_notify') ) {
wp_notify_postauthor( $comment_id );
}
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_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_id);
$comment = get_comment($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_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
*
* @param int $post_id Post ID
* @param bool $do_deferred Whether to process previously deferred post comment counts
* @return bool|null True on success, false on failure
*/
function wp_update_comment_count($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;
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.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(']]>', ']]>', $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, $pinged) ) {
trackback($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
* @uses $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 $ID Post ID.
* @return mixed Database query from update.
*/
function trackback($trackback_url, $title, $excerpt, $ID) {
global $wpdb;
if ( empty($trackback_url) )
return;
$options = array();
$options['timeout'] = 4;
$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
* @uses $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
*
* @param array $comments Array of comment row objects
*/
function update_comment_cache($comments) {
foreach ( (array) $comments as $comment )
wp_cache_add($comment->comment_ID, $comment, 'comment');
}
//
// 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 object $posts Post data object.
* @param object $query Query object.
* @return object
*/
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.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;
}
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