WordPress/wp-includes/comment.php

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<?php
/**
* Manages WordPress comments
*
* @package WordPress
*/
/**
* check_comment() - Checks whether a comment passes internal checks to be allowed to add
*
* {@internal Missing Long Description}}
*
* @since 1.2
* @uses $wpdb
*
* @param string $author {@internal Missing Description }}
* @param string $email {@internal Missing Description }}
* @param string $url {@internal Missing Description }}
* @param string $comment {@internal Missing Description }}
* @param string $user_ip {@internal Missing Description }}
* @param string $user_agent {@internal Missing Description }}
* @param string $comment_type {@internal Missing Description }}
* @return bool {@internal Missing Description }}
*/
function check_comment($author, $email, $url, $comment, $user_ip, $user_agent, $comment_type) {
global $wpdb;
if ( 1 == get_option('comment_moderation') )
return false; // If moderation is set to manual
if ( preg_match_all("|(href\t*?=\t*?['\"]?)?(https?:)?//|i", $comment, $out) >= get_option('comment_max_links') )
return false; // Check # of external links
$mod_keys = trim(get_option('moderation_keys'));
if ( !empty($mod_keys) ) {
$words = explode("\n", $mod_keys );
foreach ($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, $author) ) return false;
if ( preg_match($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;
}
}
// Comment whitelisting:
if ( 1 == get_option('comment_whitelist')) {
if ( 'trackback' == $comment_type || 'pingback' == $comment_type ) { // check if domain is in blogroll
$uri = parse_url($url);
$domain = $uri['host'];
$uri = parse_url( get_option('home') );
$home_domain = $uri['host'];
if ( $wpdb->get_var($wpdb->prepare("SELECT link_id FROM $wpdb->links WHERE link_url LIKE (%s) LIMIT 1", '%'.$domain.'%')) || $domain == $home_domain )
return true;
else
return false;
} elseif ( $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;
}
/**
* get_approved_comments() - Returns the approved comments for post $post_id
*
* @since 2.0
* @uses $wpdb
*
* @param int $post_id The ID of the post
* @return array $comments The approved comments
*/
function get_approved_comments($post_id) {
global $wpdb;
return $wpdb->get_results($wpdb->prepare("SELECT * FROM $wpdb->comments WHERE comment_post_ID = %d AND comment_approved = '1' ORDER BY comment_date", $post_id));
}
/**
* get_comment() - Retrieves comment data given a comment ID or comment object.
*
* {@internal Missing Long Description}}
*
* @since 2.0
* @uses $wpdb
*
* @param object|string|int $comment {@internal Missing Description}}
* @param string $output 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", $comment));
wp_cache_add($_comment->comment_ID, $_comment, 'comment');
}
}
$_comment = apply_filters('get_comment', $_comment);
if ( $output == OBJECT ) {
return $_comment;
} elseif ( $output == ARRAY_A ) {
return get_object_vars($_comment);
} elseif ( $output == ARRAY_N ) {
return array_values(get_object_vars($_comment));
} else {
return $_comment;
}
}
/**
* get_commentdata() - Returns an array of comment data about comment $comment_ID
*
* get_comment() technically does the same thing as this function. This function also
* appears to reference variables and then not use them or not update them when needed.
* It is advised to switch to get_comment(), since this function might be deprecated in
* favor of using get_comment().
*
* @deprecated Use get_comment()
* @see get_comment()
* @since 0.71
*
* @uses $postc Comment cache, might not be used any more
* @uses $id
* @uses $wpdb Database Object
*
* @param int $comment_ID The ID of the comment
* @param int $no_cache Whether to use the cache or not (casted to bool)
* @param bool $include_unapproved Whether to include unapproved comments or not
* @return array The comment data
*/
function get_commentdata( $comment_ID, $no_cache = 0, $include_unapproved = false ) { // less flexible, but saves DB queries
global $postc, $wpdb;
if ( $no_cache ) {
$query = $wpdb->prepare("SELECT * FROM $wpdb->comments WHERE comment_ID = %d", $comment_ID);
if ( false == $include_unapproved )
$query .= " AND comment_approved = '1'";
$myrow = $wpdb->get_row($query, ARRAY_A);
} else {
$myrow['comment_ID'] = $postc->comment_ID;
$myrow['comment_post_ID'] = $postc->comment_post_ID;
$myrow['comment_author'] = $postc->comment_author;
$myrow['comment_author_email'] = $postc->comment_author_email;
$myrow['comment_author_url'] = $postc->comment_author_url;
$myrow['comment_author_IP'] = $postc->comment_author_IP;
$myrow['comment_date'] = $postc->comment_date;
$myrow['comment_content'] = $postc->comment_content;
$myrow['comment_karma'] = $postc->comment_karma;
$myrow['comment_approved'] = $postc->comment_approved;
$myrow['comment_type'] = $postc->comment_type;
}
return $myrow;
}
/**
* get_lastcommentmodified() - The date the last comment was modified
*
* {@internal Missing Long Description}}
*
* @since 1.5.0
* @uses $wpdb
* @global array $cache_lastcommentmodified
*
* @param string $timezone Which timezone to use in reference to 'gmt', 'blog', or 'server' locations
* @return string Last comment modified date
*/
function get_lastcommentmodified($timezone = 'server') {
global $cache_lastcommentmodified, $wpdb;
$add_seconds_server = date('Z');
$now = current_time('mysql', 1);
if ( !isset($cache_lastcommentmodified[$timezone]) ) {
switch ( strtolower($timezone)) {
case 'gmt':
$lastcommentmodified = $wpdb->get_var($wpdb->prepare("SELECT comment_date_gmt FROM $wpdb->comments WHERE comment_date_gmt <= %s AND comment_approved = '1' ORDER BY comment_date_gmt DESC LIMIT 1", $now));
break;
case 'blog':
$lastcommentmodified = $wpdb->get_var($wpdb->prepare("SELECT comment_date FROM $wpdb->comments WHERE comment_date_gmt <= %s AND comment_approved = '1' ORDER BY comment_date_gmt DESC LIMIT 1", $now));
break;
case 'server':
$lastcommentmodified = $wpdb->get_var($wpdb->prepare("SELECT DATE_ADD(comment_date_gmt, INTERVAL %s SECOND) FROM $wpdb->comments WHERE comment_date_gmt <= %s AND comment_approved = '1' ORDER BY comment_date_gmt DESC LIMIT 1", $add_seconds_server, $now));
break;
}
$cache_lastcommentmodified[$timezone] = $lastcommentmodified;
} else {
$lastcommentmodified = $cache_lastcommentmodified[$timezone];
}
return $lastcommentmodified;
}
/**
* get_comment_count() - The amount of comments in a post or total comments
*
* {@internal Missing Long Description}}
*
* @since 2.0.0
* @uses $wpdb
*
* @param int $post_id Optional. Comment amount in post if > 0, else total com
ments blog wide
* @return array The amount of spam, approved, awaiting moderation, and total
*/
function get_comment_count( $post_id = 0 ) {
global $wpdb;
$post_id = (int) $post_id;
$where = '';
if ( $post_id > 0 ) {
$where = "WHERE comment_post_ID = {$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 $comment_count;
}
/**
* sanitize_comment_cookies() - {@internal Missing Short Description}}
*
* {@internal Missing Long Description}}
*
* @since 2.0.4
*
*/
function sanitize_comment_cookies() {
if ( isset($_COOKIE['comment_author_'.COOKIEHASH]) ) {
$comment_author = apply_filters('pre_comment_author_name', $_COOKIE['comment_author_'.COOKIEHASH]);
$comment_author = stripslashes($comment_author);
$comment_author = attribute_escape($comment_author);
$_COOKIE['comment_author_'.COOKIEHASH] = $comment_author;
}
if ( isset($_COOKIE['comment_author_email_'.COOKIEHASH]) ) {
$comment_author_email = apply_filters('pre_comment_author_email', $_COOKIE['comment_author_email_'.COOKIEHASH]);
$comment_author_email = stripslashes($comment_author_email);
$comment_author_email = attribute_escape($comment_author_email);
$_COOKIE['comment_author_email_'.COOKIEHASH] = $comment_author_email;
}
if ( isset($_COOKIE['comment_author_url_'.COOKIEHASH]) ) {
$comment_author_url = apply_filters('pre_comment_author_url', $_COOKIE['comment_author_url_'.COOKIEHASH]);
$comment_author_url = stripslashes($comment_author_url);
$_COOKIE['comment_author_url_'.COOKIEHASH] = $comment_author_url;
}
}
/**
* wp_allow_comment() - Validates whether this comment is allowed to be made or not
*
* {@internal Missing Long Description}}
*
* @since 2.0.0
* @uses $wpdb
* @uses apply_filters() Calls 'pre_comment_approved' hook on the type of comment
* @uses do_action() Calls 'check_comment_flood' hook on $comment_author_IP, $comment_author_email, and $comment_date_gmt
*
* @param array $commentdata Contains information on the comment
* @return mixed Signifies the approval status (0|1|'spam')
*/
function wp_allow_comment($commentdata) {
global $wpdb;
extract($commentdata, EXTR_SKIP);
// Simple duplicate check
// expected_slashed ($comment_post_ID, $comment_author, $comment_author_email, $comment_content)
$dupe = "SELECT comment_ID FROM $wpdb->comments WHERE comment_post_ID = '$comment_post_ID' AND ( comment_author = '$comment_author' ";
if ( $comment_author_email )
$dupe .= "OR comment_author_email = '$comment_author_email' ";
$dupe .= ") AND comment_content = '$comment_content' LIMIT 1";
if ( $wpdb->get_var($dupe) )
wp_die( __('Duplicate comment detected; it looks as though you\'ve already said that!') );
do_action( 'check_comment_flood', $comment_author_IP, $comment_author_email, $comment_date_gmt );
if ( $user_id ) {
$userdata = get_userdata($user_id);
$user = new WP_User($user_id);
$post_author = $wpdb->get_var($wpdb->prepare("SELECT post_author FROM $wpdb->posts WHERE ID = %d LIMIT 1", $comment_post_ID));
}
if ( $userdata && ( $user_id == $post_author || $user->has_cap('level_9') ) ) {
// The author and the admins get respect.
$approved = 1;
} else {
// Everyone else's comments will be checked.
if ( check_comment($comment_author, $comment_author_email, $comment_author_url, $comment_content, $comment_author_IP, $comment_agent, $comment_type) )
$approved = 1;
else
$approved = 0;
if ( wp_blacklist_check($comment_author, $comment_author_email, $comment_author_url, $comment_content, $comment_author_IP, $comment_agent) )
$approved = 'spam';
}
$approved = apply_filters('pre_comment_approved', $approved);
return $approved;
}
/**
* check_comment_flood_db() - {@internal Missing Short Description}}
*
* {@internal Missing Long Description}}
*
* @since 2.3.0
* @uses $wpdb
* @uses apply_filters() {@internal Missing Description}}
* @uses do_action() {@internal Missing Description}}
*
* @param string $ip {@internal Missing Description}}
* @param string $email {@internal Missing Description}}
* @param unknown_type $date {@internal Missing Description}}
*/
function check_comment_flood_db( $ip, $email, $date ) {
global $wpdb;
if ( $lasttime = $wpdb->get_var("SELECT comment_date_gmt FROM $wpdb->comments WHERE comment_author_IP = '$ip' OR comment_author_email = '$email' ORDER BY comment_date DESC LIMIT 1") ) {
$time_lastcomment = mysql2date('U', $lasttime);
$time_newcomment = mysql2date('U', $date);
$flood_die = apply_filters('comment_flood_filter', false, $time_lastcomment, $time_newcomment);
if ( $flood_die ) {
do_action('comment_flood_trigger', $time_lastcomment, $time_newcomment);
wp_die( __('You are posting comments too quickly. Slow down.') );
}
}
}
/**
* wp_blacklist_check() - Does comment contain blacklisted characters or words
*
* {@internal Missing Long Description}}
*
* @since 1.5.0
* @uses do_action() Calls 'wp_blacklist_check' hook for all parameters
*
* @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) {
do_action('wp_blacklist_check', $author, $email, $url, $comment, $user_ip, $user_agent);
if ( preg_match_all('/&#(\d+);/', $comment . $author . $url, $chars) ) {
foreach ( (array) $chars[1] as $char ) {
// If it's an encoded char in the normal ASCII set, reject
if ( 38 == $char )
continue; // Unless it's &
if ( $char < 128 )
return true;
}
}
$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;
}
/**
* wp_delete_comment() - Removes comment ID and maybe updates post comment count
*
* The post comment count will be updated if the comment was approved and has a post
* ID available.
*
* @since 2.0.0
* @uses $wpdb
* @uses do_action() Calls 'delete_comment' hook on comment ID
* @uses do_action() Calls 'wp_set_comment_status' hook on comment ID with 'delete' set for the second parameter
*
* @param int $comment_id Comment ID
* @return bool False if delete comment query failure, true on success
*/
function wp_delete_comment($comment_id) {
global $wpdb;
do_action('delete_comment', $comment_id);
$comment = get_comment($comment_id);
if ( ! $wpdb->query("DELETE FROM $wpdb->comments WHERE comment_ID='$comment_id' LIMIT 1") )
return false;
$post_id = $comment->comment_post_ID;
if ( $post_id && $comment->comment_approved == 1 )
wp_update_comment_count($post_id);
clean_comment_cache($comment_id);
do_action('wp_set_comment_status', $comment_id, 'delete');
return true;
}
/**
* wp_get_comment_status() - The status of a comment by ID
*
* @since 1.0.0
*
* @param int $comment_id Comment ID
* @return string|bool Status might be 'deleted', 'approved', 'unapproved', 'spam'. False on failure
*/
function wp_get_comment_status($comment_id) {
$comment = get_comment($comment_id);
if ( !$comment )
return false;
$approved = $comment->comment_approved;
if ( $approved == NULL )
return 'deleted';
elseif ( $approved == '1' )
return 'approved';
elseif ( $approved == '0' )
return 'unapproved';
elseif ( $approved == 'spam' )
return 'spam';
else
return false;
}
/**
* wp_get_current_commenter() - 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];
return compact('comment_author', 'comment_author_email', 'comment_author_url');
}
/**
* wp_insert_comment() - Inserts a comment to the database
*
* {@internal Missing Long Description}}
*
* @since 2.0.0
* @uses $wpdb
*
* @param array $commentdata Contains information on the comment
* @return int The new comment's id
*/
function wp_insert_comment($commentdata) {
global $wpdb;
extract($commentdata, EXTR_SKIP);
if ( ! isset($comment_author_IP) )
$comment_author_IP = preg_replace( '/[^0-9., ]/', '',$_SERVER['REMOTE_ADDR'] );
if ( ! isset($comment_date) )
$comment_date = current_time('mysql');
if ( ! isset($comment_date_gmt) )
$comment_date_gmt = get_gmt_from_date($comment_date);
if ( ! isset($comment_parent) )
$comment_parent = 0;
if ( ! isset($comment_approved) )
$comment_approved = 1;
if ( ! isset($user_id) )
$user_id = 0;
$result = $wpdb->query("INSERT INTO $wpdb->comments
(comment_post_ID, comment_author, comment_author_email, comment_author_url, comment_author_IP, comment_date, comment_date_gmt, comment_content, comment_approved, comment_agent, comment_type, comment_parent, user_id)
VALUES
('$comment_post_ID', '$comment_author', '$comment_author_email', '$comment_author_url', '$comment_author_IP', '$comment_date', '$comment_date_gmt', '$comment_content', '$comment_approved', '$comment_agent', '$comment_type', '$comment_parent', '$user_id')
");
$id = (int) $wpdb->insert_id;
if ( $comment_approved == 1)
wp_update_comment_count($comment_post_ID);
return $id;
}
/**
* wp_filter_comment() - Parses and returns comment information
*
* 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
* @uses apply_filters() Calls 'pre_user_id' hook on comment author's user ID
* @uses apply_filters() Calls 'pre_comment_user_agent' hook on comment author's user agent
* @uses apply_filters() Calls 'pre_comment_author_name' hook on comment author's name
* @uses apply_filters() Calls 'pre_comment_content' hook on the comment's content
* @uses apply_filters() Calls 'pre_comment_user_ip' hook on comment author's IP
* @uses apply_filters() Calls 'pre_comment_author_url' hook on comment author's URL
* @uses apply_filters() Calls 'pre_comment_author_email' hook on comment author's email address
*
* @param array $commentdata Contains information on the comment
* @return array Parsed comment information
*/
function wp_filter_comment($commentdata) {
$commentdata['user_id'] = apply_filters('pre_user_id', $commentdata['user_ID']);
$commentdata['comment_agent'] = apply_filters('pre_comment_user_agent', $commentdata['comment_agent']);
$commentdata['comment_author'] = apply_filters('pre_comment_author_name', $commentdata['comment_author']);
$commentdata['comment_content'] = apply_filters('pre_comment_content', $commentdata['comment_content']);
$commentdata['comment_author_IP'] = apply_filters('pre_comment_user_ip', $commentdata['comment_author_IP']);
$commentdata['comment_author_url'] = apply_filters('pre_comment_author_url', $commentdata['comment_author_url']);
$commentdata['comment_author_email'] = apply_filters('pre_comment_author_email', $commentdata['comment_author_email']);
$commentdata['filtered'] = true;
return $commentdata;
}
/**
* wp_throttle_comment_flood() - {@internal Missing Short Description}}
*
* {@internal Missing Long Description}}
*
* @since 2.1.0
*
* @param unknown_type $block {@internal Missing Description}}
* @param unknown_type $time_lastcomment {@internal Missing Description}}
* @param unknown_type $time_newcomment {@internal Missing Description}}
* @return unknown {@internal Missing Description}}
*/
function wp_throttle_comment_flood($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;
}
/**
* wp_new_comment() - Parses and adds a new comment to the database
*
* {@internal Missing Long Description}}
*
* @since 1.5.0
* @uses apply_filters() Calls 'preprocess_comment' hook on $commentdata parameter array before processing
* @uses do_action() Calls 'comment_post' hook on $comment_ID returned from adding the comment and if the comment was approved.
* @uses wp_filter_comment() Used to filter comment before adding comment
* @uses wp_allow_comment() checks to see if comment is approved.
* @uses wp_insert_comment() Does the actual comment insertion to the database
*
* @param array $commentdata Contains information on the comment
* @return int The ID of the comment after adding.
*/
function wp_new_comment( $commentdata ) {
$commentdata = apply_filters('preprocess_comment', $commentdata);
$commentdata['comment_post_ID'] = (int) $commentdata['comment_post_ID'];
$commentdata['user_ID'] = (int) $commentdata['user_ID'];
$commentdata['comment_author_IP'] = preg_replace( '/[^0-9., ]/', '',$_SERVER['REMOTE_ADDR'] );
$commentdata['comment_agent'] = $_SERVER['HTTP_USER_AGENT'];
$commentdata['comment_date'] = current_time('mysql');
$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);
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);
$post = &get_post($commentdata['comment_post_ID']); // Don't notify if it's your own comment
if ( get_option('comments_notify') && $commentdata['comment_approved'] && $post->post_author != $commentdata['user_ID'] )
wp_notify_postauthor($comment_ID, $commentdata['comment_type']);
}
return $comment_ID;
}
/**
* wp_set_comment_status() - Sets the status of comment ID
*
* {@internal Missing Long Description}}
*
* @since 1.0.0
*
* @param int $comment_id Comment ID
* @param string $comment_status New comment status, either 'hold', 'approve', 'spam', or 'delete'
* @return bool False on failure or deletion and true on success.
*/
function wp_set_comment_status($comment_id, $comment_status) {
global $wpdb;
switch ( $comment_status ) {
case 'hold':
$query = "UPDATE $wpdb->comments SET comment_approved='0' WHERE comment_ID='$comment_id' LIMIT 1";
break;
case 'approve':
$query = "UPDATE $wpdb->comments SET comment_approved='1' WHERE comment_ID='$comment_id' LIMIT 1";
break;
case 'spam':
$query = "UPDATE $wpdb->comments SET comment_approved='spam' WHERE comment_ID='$comment_id' LIMIT 1";
break;
case 'delete':
return wp_delete_comment($comment_id);
break;
default:
return false;
}
if ( !$wpdb->query($query) )
return false;
clean_comment_cache($comment_id);
do_action('wp_set_comment_status', $comment_id, $comment_status);
$comment = get_comment($comment_id);
wp_update_comment_count($comment->comment_post_ID);
return true;
}
/**
* wp_update_comment() - Parses and updates an existing comment in the database
*
* {@internal Missing Long Description}}
*
* @since 2.0.0
* @uses $wpdb
*
* @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);
// Escape data pulled from DB.
foreach ( (array) $comment as $key => $value )
$comment[$key] = $wpdb->escape($value);
// Merge old and new fields with new fields overwriting old ones.
$commentarr = array_merge($comment, $commentarr);
$commentarr = wp_filter_comment( $commentarr );
// Now extract the merged array.
extract($commentarr, EXTR_SKIP);
$comment_content = apply_filters('comment_save_pre', $comment_content);
$comment_date_gmt = get_gmt_from_date($comment_date);
$wpdb->query(
"UPDATE $wpdb->comments SET
comment_content = '$comment_content',
comment_author = '$comment_author',
comment_author_email = '$comment_author_email',
comment_approved = '$comment_approved',
comment_author_url = '$comment_author_url',
comment_date = '$comment_date',
comment_date_gmt = '$comment_date_gmt'
WHERE comment_ID = $comment_ID" );
$rval = $wpdb->rows_affected;
clean_comment_cache($comment_ID);
wp_update_comment_count($comment_post_ID);
do_action('edit_comment', $comment_ID);
return $rval;
}
/**
* wp_defer_comment_counting() - 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
* @staticvar bool $_defer
*
* @param bool $defer
* @return unknown
*/
function wp_defer_comment_counting($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;
}
/**
* wp_update_comment_count() - 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 $do_deferred Whether to process previously deferred post comment counts
* @return bool True on success, false on failure
*/
function wp_update_comment_count($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);
}
}
/**
* wp_update_comment_count_now() - Updates the comment count for the post
*
* @since 2.5
* @uses $wpdb
* @uses do_action() Calls 'wp_update_comment_count' hook on $post_id, $new, and $old
* @uses do_action() Calls 'edit_posts' hook on $post_id and $post
*
* @param int $post_id Post ID
* @return bool False on '0' $post_id or if post with ID does not exist. True on success.
*/
function wp_update_comment_count_now($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("SELECT COUNT(*) FROM $wpdb->comments WHERE comment_post_ID = '$post_id' AND comment_approved = '1'");
$wpdb->query("UPDATE $wpdb->posts SET comment_count = '$new' WHERE ID = '$post_id'");
if ( 'page' == $post->post_type )
clean_page_cache( $post_id );
else
clean_post_cache( $post_id );
do_action('wp_update_comment_count', $post_id, $new, $old);
do_action('edit_post', $post_id, $post);
return true;
}
//
// Ping and trackback functions.
//
/**
* discover_pingback_server_uri() - Finds a pingback server URI based on the given URL
*
* {@internal Missing Long Description}}
*
* @since 1.5.0
* @uses $wp_version
*
* @param string $url URL to ping
* @param int $timeout_bytes Number of bytes to timeout at. Prevents big file downloads, default is 2048.
* @return bool|string False on failure, string containing URI on success.
*/
function discover_pingback_server_uri($url, $timeout_bytes = 2048) {
global $wp_version;
$byte_count = 0;
$contents = '';
$headers = '';
$pingback_str_dquote = 'rel="pingback"';
$pingback_str_squote = 'rel=\'pingback\'';
$x_pingback_str = 'x-pingback: ';
extract(parse_url($url), EXTR_SKIP);
if ( !isset($host) ) // Not an URL. This should never happen.
return false;
$path = ( !isset($path) ) ? '/' : $path;
$path .= ( isset($query) ) ? '?' . $query : '';
$port = ( isset($port) ) ? $port : 80;
// Try to connect to the server at $host
$fp = @fsockopen($host, $port, $errno, $errstr, 2);
if ( !$fp ) // Couldn't open a connection to $host
return false;
// Send the GET request
$request = "GET $path HTTP/1.1\r\nHost: $host\r\nUser-Agent: WordPress/$wp_version \r\n\r\n";
// ob_end_flush();
fputs($fp, $request);
// Let's check for an X-Pingback header first
while ( !feof($fp) ) {
$line = fgets($fp, 512);
if ( trim($line) == '' )
break;
$headers .= trim($line)."\n";
$x_pingback_header_offset = strpos(strtolower($headers), $x_pingback_str);
if ( $x_pingback_header_offset ) {
// We got it!
preg_match('#x-pingback: (.+)#is', $headers, $matches);
$pingback_server_url = trim($matches[1]);
return $pingback_server_url;
}
if ( strpos(strtolower($headers), 'content-type: ') ) {
preg_match('#content-type: (.+)#is', $headers, $matches);
$content_type = trim($matches[1]);
}
}
if ( preg_match('#(image|audio|video|model)/#is', $content_type) ) // Not an (x)html, sgml, or xml page, no use going further
return false;
while ( !feof($fp) ) {
$line = fgets($fp, 1024);
$contents .= trim($line);
$pingback_link_offset_dquote = strpos($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;
}
$byte_count += strlen($line);
if ( $byte_count > $timeout_bytes ) {
// It's no use going further, there probably isn't any pingback
// server to find in this file. (Prevents loading large files.)
return false;
}
}
// We didn't find anything.
return false;
}
/**
* do_all_pings() - {@internal Missing Short Description}}
*
* {@internal Missing Long Description}}
*
* @since 2.1.0
* @uses $wpdb
*/
function do_all_pings() {
global $wpdb;
// Do pingbacks
while ($ping = $wpdb->get_row("SELECT * FROM {$wpdb->posts}, {$wpdb->postmeta} WHERE {$wpdb->posts}.ID = {$wpdb->postmeta}.post_id AND {$wpdb->postmeta}.meta_key = '_pingme' LIMIT 1")) {
$wpdb->query("DELETE FROM {$wpdb->postmeta} WHERE post_id = {$ping->ID} AND meta_key = '_pingme';");
pingback($ping->post_content, $ping->ID);
}
// Do Enclosures
while ($enclosure = $wpdb->get_row("SELECT * FROM {$wpdb->posts}, {$wpdb->postmeta} WHERE {$wpdb->posts}.ID = {$wpdb->postmeta}.post_id AND {$wpdb->postmeta}.meta_key = '_encloseme' LIMIT 1")) {
$wpdb->query("DELETE FROM {$wpdb->postmeta} WHERE post_id = {$enclosure->ID} AND meta_key = '_encloseme';");
do_enclose($enclosure->post_content, $enclosure->ID);
}
// Do Trackbacks
$trackbacks = $wpdb->get_results("SELECT ID FROM $wpdb->posts WHERE to_ping <> '' AND post_status = 'publish'");
if ( is_array($trackbacks) ) {
foreach ( $trackbacks as $trackback )
do_trackbacks($trackback->ID);
}
//Do Update Services/Generic Pings
generic_ping();
}
/**
* do_trackbacks() - {@internal Missing Short Description}}
*
* {@internal Missing Long Description}}
*
* @since 1.5.0
* @uses $wpdb
*
* @param int $post_id Post ID to do trackbacks on
*/
function do_trackbacks($post_id) {
global $wpdb;
$post = $wpdb->get_row("SELECT * FROM $wpdb->posts WHERE ID = $post_id");
$to_ping = get_to_ping($post_id);
$pinged = get_pung($post_id);
if ( empty($to_ping) ) {
$wpdb->query("UPDATE $wpdb->posts SET to_ping = '' WHERE ID = '$post_id'");
return;
}
if ( empty($post->post_excerpt) )
$excerpt = apply_filters('the_content', $post->post_content);
else
$excerpt = apply_filters('the_excerpt', $post->post_excerpt);
$excerpt = str_replace(']]>', ']]&gt;', $excerpt);
$excerpt = strip_tags($excerpt);
if ( function_exists('mb_strcut') ) // For international trackbacks
$excerpt = mb_strcut($excerpt, 0, 252, get_option('blog_charset')) . '...';
else
$excerpt = substr($excerpt, 0, 252) . '...';
$post_title = apply_filters('the_title', $post->post_title);
$post_title = strip_tags($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("UPDATE $wpdb->posts SET to_ping = TRIM(REPLACE(to_ping, '$tb_ping', '')) WHERE ID = '$post_id'");
}
}
}
}
/**
* generic_ping() - {@internal Missing Short Description}}
*
* {@internal Missing Long Description}}
*
* @since 1.2.0
*
* @param int $post_id Post ID. Not actually used.
* @return int Same as Post ID from parameter
*/
function generic_ping($post_id = 0) {
$services = get_option('ping_sites');
$services = preg_replace("|(\s)+|", '$1', $services); // Kill dupe lines
$services = trim($services);
if ( '' != $services ) {
$services = explode("\n", $services);
foreach ( (array) $services as $service )
weblog_ping($service);
}
return $post_id;
}
/**
* pingback() - Pings back the links found in a post
*
* {@internal Missing Long Description}}
*
* @since 0.71
* @uses $wp_version
* @uses IXR_Client
*
* @param string $content {@internal Missing Description}}
* @param int $post_ID {@internal Missing Description}}
*/
function pingback($content, $post_ID) {
global $wp_version;
include_once(ABSPATH . WPINC . '/class-IXR.php');
// original code by Mort (http://mort.mine.nu:8080)
$post_links = array();
$pung = get_pung($post_ID);
// Variables
$ltrs = '\w';
$gunk = '/#~:.?+=&%@!\-';
$punc = '.:?\-';
$any = $ltrs . $gunk . $punc;
// Step 1
// Parsing the post, external links (if any) are stored in the $post_links array
// This regexp comes straight from phpfreaks.com
// http://www.phpfreaks.com/quickcode/Extract_All_URLs_on_a_Page/15.php
preg_match_all("{\b http : [$any] +? (?= [$punc] * [^$any] | $)}x", $content, $post_links_temp);
// 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 ( $post_links_temp[0] 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.
$test = parse_url($link_test);
if ( isset($test['query']) )
$post_links[] = $link_test;
elseif ( ($test['path'] != '/') && ($test['path'] != '') )
$post_links[] = $link_test;
endif;
endforeach;
do_action_ref_array('pre_ping', array(&$post_links, &$pung));
foreach ( (array) $post_links as $pagelinkedto ) {
$pingback_server_url = discover_pingback_server_uri($pagelinkedto, 2048);
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
$client = new IXR_Client($pingback_server_url);
$client->timeout = 3;
$client->useragent .= ' -- WordPress/' . $wp_version;
// 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 );
}
}
}
/**
* privacy_ping_filter() - {@internal Missing Short Description}}
*
* {@internal Missing Long Description}}
*
* @since 2.1.0
*
* @param unknown_type $sites {@internal Missing Description}}
* @return unknown {@internal Missing Description}}
*/
function privacy_ping_filter($sites) {
if ( '0' != get_option('blog_public') )
return $sites;
else
return '';
}
/**
* trackback() - Send a Trackback
*
* {@internal Missing Long Description}}
*
* @since 0.71
* @uses $wpdb
* @uses $wp_version WordPress version
*
* @param string $trackback_url {@internal Missing Description}}
* @param string $title {@internal Missing Description}}
* @param string $excerpt {@internal Missing Description}}
* @param int $ID {@internal Missing Description}}
* @return unknown {@internal Missing Description}}
*/
function trackback($trackback_url, $title, $excerpt, $ID) {
global $wpdb, $wp_version;
if ( empty($trackback_url) )
return;
$title = urlencode($title);
$excerpt = urlencode($excerpt);
$blog_name = urlencode(get_option('blogname'));
$tb_url = $trackback_url;
$url = urlencode(get_permalink($ID));
$query_string = "title=$title&url=$url&blog_name=$blog_name&excerpt=$excerpt";
$trackback_url = parse_url($trackback_url);
$http_request = 'POST ' . $trackback_url['path'] . ($trackback_url['query'] ? '?'.$trackback_url['query'] : '') . " HTTP/1.0\r\n";
$http_request .= 'Host: '.$trackback_url['host']."\r\n";
$http_request .= 'Content-Type: application/x-www-form-urlencoded; charset='.get_option('blog_charset')."\r\n";
$http_request .= 'Content-Length: '.strlen($query_string)."\r\n";
$http_request .= "User-Agent: WordPress/" . $wp_version;
$http_request .= "\r\n\r\n";
$http_request .= $query_string;
if ( '' == $trackback_url['port'] )
$trackback_url['port'] = 80;
$fs = @fsockopen($trackback_url['host'], $trackback_url['port'], $errno, $errstr, 4);
@fputs($fs, $http_request);
@fclose($fs);
$tb_url = addslashes( $tb_url );
$wpdb->query("UPDATE $wpdb->posts SET pinged = CONCAT(pinged, '\n', '$tb_url') WHERE ID = '$ID'");
return $wpdb->query("UPDATE $wpdb->posts SET to_ping = TRIM(REPLACE(to_ping, '$tb_url', '')) WHERE ID = '$ID'");
}
/**
* weblog_ping() - {@internal Missing Short Description}}
*
* {@internal Missing Long Description}}
*
* @since 1.2.0
* @uses $wp_version
* @uses IXR_Client
*
* @param unknown_type $server
* @param unknown_type $path
*/
function weblog_ping($server = '', $path = '') {
global $wp_version;
include_once(ABSPATH . WPINC . '/class-IXR.php');
// using a timeout of 3 seconds should be enough to cover slow servers
$client = new IXR_Client($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;
$home = trailingslashit( get_option('home') );
if ( !$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);
}
//
// Cache
//
/**
* clean_comment_cache() - Removes comment ID from the comment cache
*
* @since 2.3.0
* @package WordPress
* @subpackage Cache
*
* @param int $id Comment ID to remove from cache
*/
function clean_comment_cache($id) {
wp_cache_delete($id, 'comment');
}
/**
* update_comment_cache() - 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');
}
?>