X-Git-Url: https://scripts.mit.edu/gitweb/autoinstalls/wordpress.git/blobdiff_plain/0461a5f2e55c8d5f1fde96ca2e83117152573c7d..refs/tags/wordpress-4.4.2:/wp-includes/pluggable.php diff --git a/wp-includes/pluggable.php b/wp-includes/pluggable.php index dae13a4a..3159b37e 100644 --- a/wp-includes/pluggable.php +++ b/wp-includes/pluggable.php @@ -17,17 +17,23 @@ if ( !function_exists('wp_set_current_user') ) : * actions on users who aren't signed in. * * @since 2.0.3 - * @global object $current_user The current user object which holds the user data. + * @global WP_User $current_user The current user object which holds the user data. * - * @param int $id User ID + * @param int $id User ID * @param string $name User's username * @return WP_User Current user User object */ function wp_set_current_user($id, $name = '') { global $current_user; - if ( isset( $current_user ) && ( $current_user instanceof WP_User ) && ( $id == $current_user->ID ) ) + // If `$id` matches the user who's already current, there's nothing to do. + if ( isset( $current_user ) + && ( $current_user instanceof WP_User ) + && ( $id == $current_user->ID ) + && ( null !== $id ) + ) { return $current_user; + } $current_user = new WP_User( $id, $name ); @@ -50,6 +56,8 @@ if ( !function_exists('wp_get_current_user') ) : * * @since 2.0.3 * + * @global WP_User $current_user + * * @return WP_User Current user WP_User object */ function wp_get_current_user() { @@ -71,10 +79,9 @@ if ( !function_exists('get_currentuserinfo') ) : * * @since 0.71 * - * @uses $current_user Checks if the current user is set - * @uses wp_validate_auth_cookie() Retrieves current logged in user. + * @global WP_User $current_user Checks if the current user is set * - * @return bool|null False on XML-RPC Request and invalid auth cookie. Null when current user set. + * @return false|void False on XML-RPC Request and invalid auth cookie. */ function get_currentuserinfo() { global $current_user; @@ -132,7 +139,7 @@ if ( !function_exists('get_userdata') ) : * @since 0.71 * * @param int $user_id User ID - * @return WP_User|bool WP_User object on success, false on failure. + * @return WP_User|false WP_User object on success, false on failure. */ function get_userdata( $user_id ) { return get_user_by( 'id', $user_id ); @@ -144,10 +151,11 @@ if ( !function_exists('get_user_by') ) : * Retrieve user info by a given field * * @since 2.8.0 + * @since 4.4.0 Added 'ID' as an alias of 'id' for the `$field` parameter. * - * @param string $field The field to retrieve the user with. id | slug | email | login + * @param string $field The field to retrieve the user with. id | ID | slug | email | login. * @param int|string $value A value for $field. A user ID, slug, email address, or login name. - * @return WP_User|bool WP_User object on success, false on failure. + * @return WP_User|false WP_User object on success, false on failure. */ function get_user_by( $field, $value ) { $userdata = WP_User::get_data_by( $field, $value ); @@ -168,6 +176,8 @@ if ( !function_exists('cache_users') ) : * * @since 3.0.0 * + * @global wpdb $wpdb WordPress database abstraction object. + * * @param array $user_ids User ID numbers list */ function cache_users( $user_ids ) { @@ -213,12 +223,12 @@ if ( !function_exists( 'wp_mail' ) ) : * * @since 1.2.1 * - * @uses PHPMailer + * @global PHPMailer $phpmailer * - * @param string|array $to Array or comma-separated list of email addresses to send message. - * @param string $subject Email subject - * @param string $message Message contents - * @param string|array $headers Optional. Additional headers. + * @param string|array $to Array or comma-separated list of email addresses to send message. + * @param string $subject Email subject + * @param string $message Message contents + * @param string|array $headers Optional. Additional headers. * @param string|array $attachments Optional. Files to attach. * @return bool Whether the email contents were sent successfully. */ @@ -233,15 +243,35 @@ function wp_mail( $to, $subject, $message, $headers = '', $attachments = array() * @param array $args A compacted array of wp_mail() arguments, including the "to" email, * subject, message, headers, and attachments values. */ - extract( apply_filters( 'wp_mail', compact( 'to', 'subject', 'message', 'headers', 'attachments' ) ) ); + $atts = apply_filters( 'wp_mail', compact( 'to', 'subject', 'message', 'headers', 'attachments' ) ); - if ( !is_array($attachments) ) - $attachments = explode( "\n", str_replace( "\r\n", "\n", $attachments ) ); + if ( isset( $atts['to'] ) ) { + $to = $atts['to']; + } + + if ( isset( $atts['subject'] ) ) { + $subject = $atts['subject']; + } + + if ( isset( $atts['message'] ) ) { + $message = $atts['message']; + } + + if ( isset( $atts['headers'] ) ) { + $headers = $atts['headers']; + } + + if ( isset( $atts['attachments'] ) ) { + $attachments = $atts['attachments']; + } + if ( ! is_array( $attachments ) ) { + $attachments = explode( "\n", str_replace( "\r\n", "\n", $attachments ) ); + } global $phpmailer; // (Re)create it, if it's gone missing - if ( !is_object( $phpmailer ) || !is_a( $phpmailer, 'PHPMailer' ) ) { + if ( ! ( $phpmailer instanceof PHPMailer ) ) { require_once ABSPATH . WPINC . '/class-phpmailer.php'; require_once ABSPATH . WPINC . '/class-smtp.php'; $phpmailer = new PHPMailer( true ); @@ -283,30 +313,37 @@ function wp_mail( $to, $subject, $message, $headers = '', $attachments = array() switch ( strtolower( $name ) ) { // Mainly for legacy -- process a From: header if it's there case 'from': - if ( strpos($content, '<' ) !== false ) { - // So... making my life hard again? - $from_name = substr( $content, 0, strpos( $content, '<' ) - 1 ); - $from_name = str_replace( '"', '', $from_name ); - $from_name = trim( $from_name ); + $bracket_pos = strpos( $content, '<' ); + if ( $bracket_pos !== false ) { + // Text before the bracketed email is the "From" name. + if ( $bracket_pos > 0 ) { + $from_name = substr( $content, 0, $bracket_pos - 1 ); + $from_name = str_replace( '"', '', $from_name ); + $from_name = trim( $from_name ); + } - $from_email = substr( $content, strpos( $content, '<' ) + 1 ); + $from_email = substr( $content, $bracket_pos + 1 ); $from_email = str_replace( '>', '', $from_email ); $from_email = trim( $from_email ); - } else { + + // Avoid setting an empty $from_email. + } elseif ( '' !== trim( $content ) ) { $from_email = trim( $content ); } break; case 'content-type': if ( strpos( $content, ';' ) !== false ) { - list( $type, $charset ) = explode( ';', $content ); + list( $type, $charset_content ) = explode( ';', $content ); $content_type = trim( $type ); - if ( false !== stripos( $charset, 'charset=' ) ) { - $charset = trim( str_replace( array( 'charset=', '"' ), '', $charset ) ); - } elseif ( false !== stripos( $charset, 'boundary=' ) ) { - $boundary = trim( str_replace( array( 'BOUNDARY=', 'boundary=', '"' ), '', $charset ) ); + if ( false !== stripos( $charset_content, 'charset=' ) ) { + $charset = trim( str_replace( array( 'charset=', '"' ), '', $charset_content ) ); + } elseif ( false !== stripos( $charset_content, 'boundary=' ) ) { + $boundary = trim( str_replace( array( 'BOUNDARY=', 'boundary=', '"' ), '', $charset_content ) ); $charset = ''; } - } else { + + // Avoid setting an empty $content_type. + } elseif ( '' !== trim( $content ) ) { $content_type = trim( $content ); } break; @@ -340,7 +377,7 @@ function wp_mail( $to, $subject, $message, $headers = '', $attachments = array() * Some hosts will block outgoing mail from this address if it doesn't exist but * there's no easy alternative. Defaulting to admin_email might appear to be another * option but some hosts may refuse to relay mail from an unknown domain. See - * http://trac.wordpress.org/ticket/5007. + * https://core.trac.wordpress.org/ticket/5007. */ if ( !isset( $from_email ) ) { @@ -379,7 +416,7 @@ function wp_mail( $to, $subject, $message, $headers = '', $attachments = array() try { // Break $recipient into name and address parts if in the format "Foo " $recipient_name = ''; - if( preg_match( '/(.*)<(.+)>/', $recipient, $matches ) ) { + if ( preg_match( '/(.*)<(.+)>/', $recipient, $matches ) ) { if ( count( $matches ) == 3 ) { $recipient_name = $matches[1]; $recipient = $matches[2]; @@ -401,7 +438,7 @@ function wp_mail( $to, $subject, $message, $headers = '', $attachments = array() try { // Break $recipient into name and address parts if in the format "Foo " $recipient_name = ''; - if( preg_match( '/(.*)<(.+)>/', $recipient, $matches ) ) { + if ( preg_match( '/(.*)<(.+)>/', $recipient, $matches ) ) { if ( count( $matches ) == 3 ) { $recipient_name = $matches[1]; $recipient = $matches[2]; @@ -419,7 +456,7 @@ function wp_mail( $to, $subject, $message, $headers = '', $attachments = array() try { // Break $recipient into name and address parts if in the format "Foo " $recipient_name = ''; - if( preg_match( '/(.*)<(.+)>/', $recipient, $matches ) ) { + if ( preg_match( '/(.*)<(.+)>/', $recipient, $matches ) ) { if ( count( $matches ) == 3 ) { $recipient_name = $matches[1]; $recipient = $matches[2]; @@ -472,7 +509,7 @@ function wp_mail( $to, $subject, $message, $headers = '', $attachments = array() // Set custom headers if ( !empty( $headers ) ) { - foreach( (array) $headers as $name => $content ) { + foreach ( (array) $headers as $name => $content ) { $phpmailer->AddCustomHeader( sprintf( '%1$s: %2$s', $name, $content ) ); } @@ -503,6 +540,19 @@ function wp_mail( $to, $subject, $message, $headers = '', $attachments = array() try { return $phpmailer->Send(); } catch ( phpmailerException $e ) { + + $mail_error_data = compact( $to, $subject, $message, $headers, $attachments ); + + /** + * Fires after a phpmailerException is caught. + * + * @since 4.4.0 + * + * @param WP_Error $error A WP_Error object with the phpmailerException code, message, and an array + * containing the mail recipient, subject, message, headers, and attachments. + */ + do_action( 'wp_mail_failed', new WP_Error( $e->getCode(), $e->getMessage(), $mail_error_data ) ); + return false; } } @@ -566,6 +616,7 @@ if ( !function_exists('wp_logout') ) : * @since 2.5.0 */ function wp_logout() { + wp_destroy_current_session(); wp_clear_auth_cookie(); /** @@ -589,9 +640,11 @@ if ( !function_exists('wp_validate_auth_cookie') ) : * * @since 2.5.0 * + * @global int $login_grace_period + * * @param string $cookie Optional. If used, will validate contents instead of cookie's * @param string $scheme Optional. The cookie scheme to use: auth, secure_auth, or logged_in - * @return bool|int False if invalid cookie, User ID if valid. + * @return false|int False if invalid cookie, User ID if valid. */ function wp_validate_auth_cookie($cookie = '', $scheme = '') { if ( ! $cookie_elements = wp_parse_auth_cookie($cookie, $scheme) ) { @@ -608,13 +661,16 @@ function wp_validate_auth_cookie($cookie = '', $scheme = '') { return false; } - extract($cookie_elements, EXTR_OVERWRITE); - - $expired = $expiration; + $scheme = $cookie_elements['scheme']; + $username = $cookie_elements['username']; + $hmac = $cookie_elements['hmac']; + $token = $cookie_elements['token']; + $expired = $expiration = $cookie_elements['expiration']; // Allow a grace period for POST and AJAX requests - if ( defined('DOING_AJAX') || 'POST' == $_SERVER['REQUEST_METHOD'] ) + if ( defined('DOING_AJAX') || 'POST' == $_SERVER['REQUEST_METHOD'] ) { $expired += HOUR_IN_SECONDS; + } // Quick check to see if an honest cookie has expired if ( $expired < time() ) { @@ -644,8 +700,11 @@ function wp_validate_auth_cookie($cookie = '', $scheme = '') { $pass_frag = substr($user->user_pass, 8, 4); - $key = wp_hash($username . $pass_frag . '|' . $expiration, $scheme); - $hash = hash_hmac('md5', $username . '|' . $expiration, $key); + $key = wp_hash( $username . '|' . $pass_frag . '|' . $expiration . '|' . $token, $scheme ); + + // If ext/hash is not present, compat.php's hash_hmac() does not support sha256. + $algo = function_exists( 'hash' ) ? 'sha256' : 'sha1'; + $hash = hash_hmac( $algo, $username . '|' . $expiration . '|' . $token, $key ); if ( ! hash_equals( $hash, $hmac ) ) { /** @@ -659,8 +718,16 @@ function wp_validate_auth_cookie($cookie = '', $scheme = '') { return false; } - if ( $expiration < time() ) // AJAX/POST grace period set above + $manager = WP_Session_Tokens::get_instance( $user->ID ); + if ( ! $manager->verify( $token ) ) { + do_action( 'auth_cookie_bad_session_token', $cookie_elements ); + return false; + } + + // AJAX/POST grace period set above + if ( $expiration < time() ) { $GLOBALS['login_grace_period'] = 1; + } /** * Fires once an authentication cookie has been validated. @@ -682,20 +749,32 @@ if ( !function_exists('wp_generate_auth_cookie') ) : * * @since 2.5.0 * - * @param int $user_id User ID - * @param int $expiration Cookie expiration in seconds - * @param string $scheme Optional. The cookie scheme to use: auth, secure_auth, or logged_in - * @return string Authentication cookie contents + * @param int $user_id User ID + * @param int $expiration Cookie expiration in seconds + * @param string $scheme Optional. The cookie scheme to use: auth, secure_auth, or logged_in + * @param string $token User's session token to use for this cookie + * @return string Authentication cookie contents. Empty string if user does not exist. */ -function wp_generate_auth_cookie($user_id, $expiration, $scheme = 'auth') { +function wp_generate_auth_cookie( $user_id, $expiration, $scheme = 'auth', $token = '' ) { $user = get_userdata($user_id); + if ( ! $user ) { + return ''; + } + + if ( ! $token ) { + $manager = WP_Session_Tokens::get_instance( $user_id ); + $token = $manager->create( $expiration ); + } $pass_frag = substr($user->user_pass, 8, 4); - $key = wp_hash($user->user_login . $pass_frag . '|' . $expiration, $scheme); - $hash = hash_hmac('md5', $user->user_login . '|' . $expiration, $key); + $key = wp_hash( $user->user_login . '|' . $pass_frag . '|' . $expiration . '|' . $token, $scheme ); - $cookie = $user->user_login . '|' . $expiration . '|' . $hash; + // If ext/hash is not present, compat.php's hash_hmac() does not support sha256. + $algo = function_exists( 'hash' ) ? 'sha256' : 'sha1'; + $hash = hash_hmac( $algo, $user->user_login . '|' . $expiration . '|' . $token, $key ); + + $cookie = $user->user_login . '|' . $expiration . '|' . $token . '|' . $hash; /** * Filter the authentication cookie. @@ -706,8 +785,9 @@ function wp_generate_auth_cookie($user_id, $expiration, $scheme = 'auth') { * @param int $user_id User ID. * @param int $expiration Authentication cookie expiration in seconds. * @param string $scheme Cookie scheme used. Accepts 'auth', 'secure_auth', or 'logged_in'. + * @param string $token User's session token used. */ - return apply_filters( 'auth_cookie', $cookie, $user_id, $expiration, $scheme ); + return apply_filters( 'auth_cookie', $cookie, $user_id, $expiration, $scheme, $token ); } endif; @@ -719,7 +799,7 @@ if ( !function_exists('wp_parse_auth_cookie') ) : * * @param string $cookie * @param string $scheme Optional. The cookie scheme to use: auth, secure_auth, or logged_in - * @return array Authentication cookie components + * @return array|false Authentication cookie components */ function wp_parse_auth_cookie($cookie = '', $scheme = '') { if ( empty($cookie) ) { @@ -749,12 +829,13 @@ function wp_parse_auth_cookie($cookie = '', $scheme = '') { } $cookie_elements = explode('|', $cookie); - if ( count($cookie_elements) != 3 ) + if ( count( $cookie_elements ) !== 4 ) { return false; + } - list($username, $expiration, $hmac) = $cookie_elements; + list( $username, $expiration, $token, $hmac ) = $cookie_elements; - return compact('username', 'expiration', 'hmac', 'scheme'); + return compact( 'username', 'expiration', 'token', 'hmac', 'scheme' ); } endif; @@ -767,11 +848,15 @@ if ( !function_exists('wp_set_auth_cookie') ) : * set, the cookies will be kept for 14 days or two weeks. * * @since 2.5.0 + * @since 4.3.0 Added the `$token` parameter. * - * @param int $user_id User ID - * @param bool $remember Whether to remember the user + * @param int $user_id User ID + * @param bool $remember Whether to remember the user + * @param mixed $secure Whether the admin cookies should only be sent over HTTPS. + * Default is_ssl(). + * @param string $token Optional. User's session token to use for this cookie. */ -function wp_set_auth_cookie($user_id, $remember = false, $secure = '') { +function wp_set_auth_cookie( $user_id, $remember = false, $secure = '', $token = '' ) { if ( $remember ) { /** * Filter the duration of the authentication cookie expiration period. @@ -795,8 +880,12 @@ function wp_set_auth_cookie($user_id, $remember = false, $secure = '') { $expire = 0; } - if ( '' === $secure ) + if ( '' === $secure ) { $secure = is_ssl(); + } + + // Frontend cookie is secure when the auth cookie is secure and the site's home URL is forced HTTPS. + $secure_logged_in_cookie = $secure && 'https' === parse_url( get_option( 'home' ), PHP_URL_SCHEME ); /** * Filter whether the connection is secure. @@ -813,11 +902,11 @@ function wp_set_auth_cookie($user_id, $remember = false, $secure = '') { * * @since 3.1.0 * - * @param bool $cookie Whether to use a secure cookie when logged-in. - * @param int $user_id User ID. - * @param bool $secure Whether the connection is secure. + * @param bool $secure_logged_in_cookie Whether to use a secure cookie when logged-in. + * @param int $user_id User ID. + * @param bool $secure Whether the connection is secure. */ - $secure_logged_in_cookie = apply_filters( 'secure_logged_in_cookie', false, $user_id, $secure ); + $secure_logged_in_cookie = apply_filters( 'secure_logged_in_cookie', $secure_logged_in_cookie, $user_id, $secure ); if ( $secure ) { $auth_cookie_name = SECURE_AUTH_COOKIE; @@ -827,8 +916,13 @@ function wp_set_auth_cookie($user_id, $remember = false, $secure = '') { $scheme = 'auth'; } - $auth_cookie = wp_generate_auth_cookie($user_id, $expiration, $scheme); - $logged_in_cookie = wp_generate_auth_cookie($user_id, $expiration, 'logged_in'); + if ( '' === $token ) { + $manager = WP_Session_Tokens::get_instance( $user_id ); + $token = $manager->create( $expiration ); + } + + $auth_cookie = wp_generate_auth_cookie( $user_id, $expiration, $scheme, $token ); + $logged_in_cookie = wp_generate_auth_cookie( $user_id, $expiration, 'logged_in', $token ); /** * Fires immediately before the authentication cookie is set. @@ -912,10 +1006,7 @@ if ( !function_exists('is_user_logged_in') ) : function is_user_logged_in() { $user = wp_get_current_user(); - if ( ! $user->exists() ) - return false; - - return true; + return $user->exists(); } endif; @@ -1007,30 +1098,36 @@ if ( !function_exists('check_admin_referer') ) : * * @since 1.2.0 * - * @param string $action Action nonce - * @param string $query_arg where to look for nonce in $_REQUEST (since 2.5) + * @param int|string $action Action nonce. + * @param string $query_arg Optional. Key to check for nonce in `$_REQUEST` (since 2.5). + * Default '_wpnonce'. + * @return false|int False if the nonce is invalid, 1 if the nonce is valid and generated between + * 0-12 hours ago, 2 if the nonce is valid and generated between 12-24 hours ago. */ -function check_admin_referer($action = -1, $query_arg = '_wpnonce') { +function check_admin_referer( $action = -1, $query_arg = '_wpnonce' ) { if ( -1 == $action ) _doing_it_wrong( __FUNCTION__, __( 'You should specify a nonce action to be verified by using the first parameter.' ), '3.2' ); $adminurl = strtolower(admin_url()); $referer = strtolower(wp_get_referer()); $result = isset($_REQUEST[$query_arg]) ? wp_verify_nonce($_REQUEST[$query_arg], $action) : false; - if ( !$result && !(-1 == $action && strpos($referer, $adminurl) === 0) ) { - wp_nonce_ays($action); - die(); - } /** * Fires once the admin request has been validated or not. * * @since 1.5.1 * - * @param string $action The nonce action. - * @param bool $result Whether the admin request nonce was validated. + * @param string $action The nonce action. + * @param false|int $result False if the nonce is invalid, 1 if the nonce is valid and generated between + * 0-12 hours ago, 2 if the nonce is valid and generated between 12-24 hours ago. */ do_action( 'check_admin_referer', $action, $result ); + + if ( ! $result && ! ( -1 == $action && strpos( $referer, $adminurl ) === 0 ) ) { + wp_nonce_ays( $action ); + die(); + } + return $result; } endif; @@ -1041,8 +1138,14 @@ if ( !function_exists('check_ajax_referer') ) : * * @since 2.0.3 * - * @param string $action Action nonce - * @param string $query_arg where to look for nonce in $_REQUEST (since 2.5) + * @param int|string $action Action nonce. + * @param false|string $query_arg Optional. Key to check for the nonce in `$_REQUEST` (since 2.5). If false, + * `$_REQUEST` values will be evaluated for '_ajax_nonce', and '_wpnonce' + * (in that order). Default false. + * @param bool $die Optional. Whether to die early when the nonce cannot be verified. + * Default true. + * @return false|int False if the nonce is invalid, 1 if the nonce is valid and generated between + * 0-12 hours ago, 2 if the nonce is valid and generated between 12-24 hours ago. */ function check_ajax_referer( $action = -1, $query_arg = false, $die = true ) { $nonce = ''; @@ -1056,23 +1159,25 @@ function check_ajax_referer( $action = -1, $query_arg = false, $die = true ) { $result = wp_verify_nonce( $nonce, $action ); - if ( $die && false == $result ) { - if ( defined( 'DOING_AJAX' ) && DOING_AJAX ) - wp_die( -1 ); - else - die( '-1' ); - } - /** * Fires once the AJAX request has been validated or not. * * @since 2.1.0 * - * @param string $action The AJAX nonce action. - * @param bool $result Whether the AJAX request nonce was validated. + * @param string $action The AJAX nonce action. + * @param false|int $result False if the nonce is invalid, 1 if the nonce is valid and generated between + * 0-12 hours ago, 2 if the nonce is valid and generated between 12-24 hours ago. */ do_action( 'check_ajax_referer', $action, $result ); + if ( $die && false === $result ) { + if ( defined( 'DOING_AJAX' ) && DOING_AJAX ) { + wp_die( -1 ); + } else { + die( '-1' ); + } + } + return $result; } endif; @@ -1083,8 +1188,10 @@ if ( !function_exists('wp_redirect') ) : * * @since 1.5.1 * + * @global bool $is_IIS + * * @param string $location The path to redirect to. - * @param int $status Status code to use. + * @param int $status Status code to use. * @return bool False if $location is not provided, true otherwise. */ function wp_redirect($location, $status = 302) { @@ -1115,7 +1222,7 @@ function wp_redirect($location, $status = 302) { $location = wp_sanitize_redirect($location); - if ( !$is_IIS && php_sapi_name() != 'cgi-fcgi' ) + if ( !$is_IIS && PHP_SAPI != 'cgi-fcgi' ) status_header($status); // This causes problems on IIS and some FastCGI setups header("Location: $location", true, $status); @@ -1133,13 +1240,38 @@ if ( !function_exists('wp_sanitize_redirect') ) : * @return string redirect-sanitized URL **/ function wp_sanitize_redirect($location) { - $location = preg_replace('|[^a-z0-9-~+_.?#=&;,/:%!]|i', '', $location); + $regex = '/ + ( + (?: [\xC2-\xDF][\x80-\xBF] # double-byte sequences 110xxxxx 10xxxxxx + | \xE0[\xA0-\xBF][\x80-\xBF] # triple-byte sequences 1110xxxx 10xxxxxx * 2 + | [\xE1-\xEC][\x80-\xBF]{2} + | \xED[\x80-\x9F][\x80-\xBF] + | [\xEE-\xEF][\x80-\xBF]{2} + | \xF0[\x90-\xBF][\x80-\xBF]{2} # four-byte sequences 11110xxx 10xxxxxx * 3 + | [\xF1-\xF3][\x80-\xBF]{3} + | \xF4[\x80-\x8F][\x80-\xBF]{2} + ){1,40} # ...one or more times + )/x'; + $location = preg_replace_callback( $regex, '_wp_sanitize_utf8_in_redirect', $location ); + $location = preg_replace('|[^a-z0-9-~+_.?#=&;,/:%!*\[\]()@]|i', '', $location); $location = wp_kses_no_null($location); // remove %0d and %0a from location $strip = array('%0d', '%0a', '%0D', '%0A'); - $location = _deep_replace($strip, $location); - return $location; + return _deep_replace( $strip, $location ); +} + +/** + * URL encode UTF-8 characters in a URL. + * + * @ignore + * @since 4.2.0 + * @access private + * + * @see wp_sanitize_redirect() + */ +function _wp_sanitize_utf8_in_redirect( $matches ) { + return urlencode( $matches[0] ); } endif; @@ -1151,22 +1283,26 @@ if ( !function_exists('wp_safe_redirect') ) : * path. A plugin can therefore set or remove allowed host(s) to or from the * list. * - * If the host is not allowed, then the redirect is to wp-admin on the siteurl + * If the host is not allowed, then the redirect defaults to wp-admin on the siteurl * instead. This prevents malicious redirects which redirect to another host, * but only used in a few places. * * @since 2.3.0 - * - * @uses wp_validate_redirect() To validate the redirect is to an allowed host. - * - * @return void Does not return anything - **/ + */ function wp_safe_redirect($location, $status = 302) { // Need to look at the URL the way it will end up in wp_redirect() $location = wp_sanitize_redirect($location); - $location = wp_validate_redirect($location, admin_url()); + /** + * Filter the redirect fallback URL for when the provided redirect is not safe (local). + * + * @since 4.3.0 + * + * @param string $fallback_url The fallback URL to use by default. + * @param int $status The redirect status. + */ + $location = wp_validate_redirect( $location, apply_filters( 'wp_safe_redirect_fallback', admin_url(), $status ) ); wp_redirect($location, $status); } @@ -1185,7 +1321,7 @@ if ( !function_exists('wp_validate_redirect') ) : * @since 2.8.1 * * @param string $location The redirect to validate - * @param string $default The value to return if $location is not allowed + * @param string $default The value to return if $location is not allowed * @return string redirect-sanitized URL **/ function wp_validate_redirect($location, $default = '') { @@ -1197,7 +1333,8 @@ function wp_validate_redirect($location, $default = '') { // In php 5 parse_url may fail if the URL query part contains http://, bug #38143 $test = ( $cut = strpos($location, '?') ) ? substr( $location, 0, $cut ) : $location; - $lp = parse_url($test); + // @-operator is used to prevent possible warnings in PHP < 5.3.3. + $lp = @parse_url($test); // Give up if malformed URL if ( false === $lp ) @@ -1207,9 +1344,17 @@ function wp_validate_redirect($location, $default = '') { if ( isset($lp['scheme']) && !('http' == $lp['scheme'] || 'https' == $lp['scheme']) ) return $default; - // Reject if scheme is set but host is not. This catches urls like https:host.com for which parse_url does not set the host field. - if ( isset($lp['scheme']) && !isset($lp['host']) ) + // Reject if certain components are set but host is not. This catches urls like https:host.com for which parse_url does not set the host field. + if ( ! isset( $lp['host'] ) && ( isset( $lp['scheme'] ) || isset( $lp['user'] ) || isset( $lp['pass'] ) || isset( $lp['port'] ) ) ) { return $default; + } + + // Reject malformed components parse_url() can return on odd inputs + foreach ( array( 'user', 'pass', 'host' ) as $component ) { + if ( isset( $lp[ $component ] ) && strpbrk( $lp[ $component ], ':/?#@' ) ) { + return $default; + } + } $wpp = parse_url(home_url()); @@ -1236,8 +1381,8 @@ if ( ! function_exists('wp_notify_postauthor') ) : * * @since 1.0.0 * - * @param int $comment_id Comment ID - * @param string $deprecated Not used + * @param int|WP_Comment $comment_id Comment ID or WP_Comment object. + * @param string $deprecated Not used * @return bool True on completion. False if no email addresses were specified. */ function wp_notify_postauthor( $comment_id, $deprecated = null ) { @@ -1246,7 +1391,7 @@ function wp_notify_postauthor( $comment_id, $deprecated = null ) { } $comment = get_comment( $comment_id ); - if ( empty( $comment ) ) + if ( empty( $comment ) || empty( $comment->comment_post_ID ) ) return false; $post = get_post( $comment->comment_post_ID ); @@ -1269,7 +1414,7 @@ function wp_notify_postauthor( $comment_id, $deprecated = null ) { * @param array $emails An array of email addresses to receive a comment notification. * @param int $comment_id The comment ID. */ - $emails = apply_filters( 'comment_notification_recipients', $emails, $comment_id ); + $emails = apply_filters( 'comment_notification_recipients', $emails, $comment->comment_ID ); $emails = array_filter( $emails ); // If there are no addresses to send the comment to, bail. @@ -1292,7 +1437,7 @@ function wp_notify_postauthor( $comment_id, $deprecated = null ) { * Default false. * @param int $comment_id The comment ID. */ - $notify_author = apply_filters( 'comment_notification_notify_author', false, $comment_id ); + $notify_author = apply_filters( 'comment_notification_notify_author', false, $comment->comment_ID ); // The comment was left by the author if ( $author && ! $notify_author && $comment->user_id == $post->post_author ) { @@ -1321,50 +1466,51 @@ function wp_notify_postauthor( $comment_id, $deprecated = null ) { // The blogname option is escaped with esc_html on the way into the database in sanitize_option // we want to reverse this for the plain text arena of emails. $blogname = wp_specialchars_decode(get_option('blogname'), ENT_QUOTES); + $comment_content = wp_specialchars_decode( $comment->comment_content ); switch ( $comment->comment_type ) { case 'trackback': $notify_message = sprintf( __( 'New trackback on your post "%s"' ), $post->post_title ) . "\r\n"; - /* translators: 1: website name, 2: author IP, 3: author domain */ - $notify_message .= sprintf( __('Website: %1$s (IP: %2$s , %3$s)'), $comment->comment_author, $comment->comment_author_IP, $comment_author_domain ) . "\r\n"; - $notify_message .= sprintf( __('URL : %s'), $comment->comment_author_url ) . "\r\n"; - $notify_message .= __('Excerpt: ') . "\r\n" . $comment->comment_content . "\r\n\r\n"; - $notify_message .= __('You can see all trackbacks on this post here: ') . "\r\n"; + /* translators: 1: website name, 2: website IP, 3: website hostname */ + $notify_message .= sprintf( __('Website: %1$s (IP: %2$s, %3$s)'), $comment->comment_author, $comment->comment_author_IP, $comment_author_domain ) . "\r\n"; + $notify_message .= sprintf( __( 'URL: %s' ), $comment->comment_author_url ) . "\r\n"; + $notify_message .= sprintf( __( 'Comment: %s' ), "\r\n" . $comment_content ) . "\r\n\r\n"; + $notify_message .= __( 'You can see all trackbacks on this post here:' ) . "\r\n"; /* translators: 1: blog name, 2: post title */ $subject = sprintf( __('[%1$s] Trackback: "%2$s"'), $blogname, $post->post_title ); break; case 'pingback': $notify_message = sprintf( __( 'New pingback on your post "%s"' ), $post->post_title ) . "\r\n"; - /* translators: 1: comment author, 2: author IP, 3: author domain */ - $notify_message .= sprintf( __('Website: %1$s (IP: %2$s , %3$s)'), $comment->comment_author, $comment->comment_author_IP, $comment_author_domain ) . "\r\n"; - $notify_message .= sprintf( __('URL : %s'), $comment->comment_author_url ) . "\r\n"; - $notify_message .= __('Excerpt: ') . "\r\n" . sprintf('[...] %s [...]', $comment->comment_content ) . "\r\n\r\n"; - $notify_message .= __('You can see all pingbacks on this post here: ') . "\r\n"; + /* translators: 1: website name, 2: website IP, 3: website hostname */ + $notify_message .= sprintf( __('Website: %1$s (IP: %2$s, %3$s)'), $comment->comment_author, $comment->comment_author_IP, $comment_author_domain ) . "\r\n"; + $notify_message .= sprintf( __( 'URL: %s' ), $comment->comment_author_url ) . "\r\n"; + $notify_message .= sprintf( __( 'Comment: %s' ), "\r\n" . $comment_content ) . "\r\n\r\n"; + $notify_message .= __( 'You can see all pingbacks on this post here:' ) . "\r\n"; /* translators: 1: blog name, 2: post title */ $subject = sprintf( __('[%1$s] Pingback: "%2$s"'), $blogname, $post->post_title ); break; default: // Comments $notify_message = sprintf( __( 'New comment on your post "%s"' ), $post->post_title ) . "\r\n"; /* translators: 1: comment author, 2: author IP, 3: author domain */ - $notify_message .= sprintf( __('Author : %1$s (IP: %2$s , %3$s)'), $comment->comment_author, $comment->comment_author_IP, $comment_author_domain ) . "\r\n"; - $notify_message .= sprintf( __('E-mail : %s'), $comment->comment_author_email ) . "\r\n"; - $notify_message .= sprintf( __('URL : %s'), $comment->comment_author_url ) . "\r\n"; - $notify_message .= sprintf( __('Whois : http://whois.arin.net/rest/ip/%s'), $comment->comment_author_IP ) . "\r\n"; - $notify_message .= __('Comment: ') . "\r\n" . $comment->comment_content . "\r\n\r\n"; - $notify_message .= __('You can see all comments on this post here: ') . "\r\n"; + $notify_message .= sprintf( __( 'Author: %1$s (IP: %2$s, %3$s)' ), $comment->comment_author, $comment->comment_author_IP, $comment_author_domain ) . "\r\n"; + $notify_message .= sprintf( __( 'Email: %s' ), $comment->comment_author_email ) . "\r\n"; + $notify_message .= sprintf( __( 'URL: %s' ), $comment->comment_author_url ) . "\r\n"; + $notify_message .= sprintf( __('Comment: %s' ), "\r\n" . $comment_content ) . "\r\n\r\n"; + $notify_message .= __( 'You can see all comments on this post here:' ) . "\r\n"; /* translators: 1: blog name, 2: post title */ $subject = sprintf( __('[%1$s] Comment: "%2$s"'), $blogname, $post->post_title ); break; } $notify_message .= get_permalink($comment->comment_post_ID) . "#comments\r\n\r\n"; - $notify_message .= sprintf( __('Permalink: %s'), get_comment_link( $comment_id ) ) . "\r\n"; + $notify_message .= sprintf( __('Permalink: %s'), get_comment_link( $comment ) ) . "\r\n"; - if ( user_can( $post->post_author, 'edit_comment', $comment_id ) ) { - if ( EMPTY_TRASH_DAYS ) - $notify_message .= sprintf( __('Trash it: %s'), admin_url("comment.php?action=trash&c=$comment_id") ) . "\r\n"; - else - $notify_message .= sprintf( __('Delete it: %s'), admin_url("comment.php?action=delete&c=$comment_id") ) . "\r\n"; - $notify_message .= sprintf( __('Spam it: %s'), admin_url("comment.php?action=spam&c=$comment_id") ) . "\r\n"; + if ( user_can( $post->post_author, 'edit_comment', $comment->comment_ID ) ) { + if ( EMPTY_TRASH_DAYS ) { + $notify_message .= sprintf( __('Trash it: %s'), admin_url("comment.php?action=trash&c={$comment->comment_ID}") ) . "\r\n"; + } else { + $notify_message .= sprintf( __('Delete it: %s'), admin_url("comment.php?action=delete&c={$comment->comment_ID}") ) . "\r\n"; + } + $notify_message .= sprintf( __('Spam it: %s'), admin_url("comment.php?action=spam&c={$comment->comment_ID}") ) . "\r\n"; } $wp_email = 'wordpress@' . preg_replace('#^www\.#', '', strtolower($_SERVER['SERVER_NAME'])); @@ -1393,7 +1539,7 @@ function wp_notify_postauthor( $comment_id, $deprecated = null ) { * @param string $notify_message The comment notification email text. * @param int $comment_id Comment ID. */ - $notify_message = apply_filters( 'comment_notification_text', $notify_message, $comment_id ); + $notify_message = apply_filters( 'comment_notification_text', $notify_message, $comment->comment_ID ); /** * Filter the comment notification email subject. @@ -1403,7 +1549,7 @@ function wp_notify_postauthor( $comment_id, $deprecated = null ) { * @param string $subject The comment notification email subject. * @param int $comment_id Comment ID. */ - $subject = apply_filters( 'comment_notification_subject', $subject, $comment_id ); + $subject = apply_filters( 'comment_notification_subject', $subject, $comment->comment_ID ); /** * Filter the comment notification email headers. @@ -1413,7 +1559,7 @@ function wp_notify_postauthor( $comment_id, $deprecated = null ) { * @param string $message_headers Headers for the comment notification email. * @param int $comment_id Comment ID. */ - $message_headers = apply_filters( 'comment_notification_headers', $message_headers, $comment_id ); + $message_headers = apply_filters( 'comment_notification_headers', $message_headers, $comment->comment_ID ); foreach ( $emails as $email ) { @wp_mail( $email, wp_specialchars_decode( $subject ), $notify_message, $message_headers ); @@ -1425,27 +1571,43 @@ endif; if ( !function_exists('wp_notify_moderator') ) : /** - * Notifies the moderator of the blog about a new comment that is awaiting approval. + * Notifies the moderator of the site about a new comment that is awaiting approval. * * @since 1.0.0 * - * @uses $wpdb + * @global wpdb $wpdb WordPress database abstraction object. + * + * Uses the {@see 'notify_moderator'} filter to determine whether the site moderator + * should be notified, overriding the site setting. * - * @param int $comment_id Comment ID - * @return bool Always returns true + * @param int $comment_id Comment ID. + * @return true Always returns true. */ function wp_notify_moderator($comment_id) { global $wpdb; - if ( 0 == get_option( 'moderation_notify' ) ) + $maybe_notify = get_option( 'moderation_notify' ); + + /** + * Filter whether to send the site moderator email notifications, overriding the site setting. + * + * @since 4.4.0 + * + * @param bool $maybe_notify Whether to notify blog moderator. + * @param int $comment_ID The id of the comment for the notification. + */ + $maybe_notify = apply_filters( 'notify_moderator', $maybe_notify, $comment_id ); + + if ( ! $maybe_notify ) { return true; + } $comment = get_comment($comment_id); $post = get_post($comment->comment_post_ID); $user = get_userdata( $post->post_author ); // Send to the administration and to the post author if the author can modify the comment. $emails = array( get_option( 'admin_email' ) ); - if ( user_can( $user->ID, 'edit_comment', $comment_id ) && ! empty( $user->user_email ) ) { + if ( $user && user_can( $user->ID, 'edit_comment', $comment_id ) && ! empty( $user->user_email ) ) { if ( 0 !== strcasecmp( $user->user_email, get_option( 'admin_email' ) ) ) $emails[] = $user->user_email; } @@ -1456,30 +1618,32 @@ function wp_notify_moderator($comment_id) { // The blogname option is escaped with esc_html on the way into the database in sanitize_option // we want to reverse this for the plain text arena of emails. $blogname = wp_specialchars_decode(get_option('blogname'), ENT_QUOTES); + $comment_content = wp_specialchars_decode( $comment->comment_content ); switch ( $comment->comment_type ) { case 'trackback': $notify_message = sprintf( __('A new trackback on the post "%s" is waiting for your approval'), $post->post_title ) . "\r\n"; $notify_message .= get_permalink($comment->comment_post_ID) . "\r\n\r\n"; - $notify_message .= sprintf( __('Website : %1$s (IP: %2$s , %3$s)'), $comment->comment_author, $comment->comment_author_IP, $comment_author_domain ) . "\r\n"; - $notify_message .= sprintf( __('URL : %s'), $comment->comment_author_url ) . "\r\n"; - $notify_message .= __('Trackback excerpt: ') . "\r\n" . $comment->comment_content . "\r\n\r\n"; + /* translators: 1: website name, 2: website IP, 3: website hostname */ + $notify_message .= sprintf( __( 'Website: %1$s (IP: %2$s, %3$s)' ), $comment->comment_author, $comment->comment_author_IP, $comment_author_domain ) . "\r\n"; + $notify_message .= sprintf( __( 'URL: %s' ), $comment->comment_author_url ) . "\r\n"; + $notify_message .= __('Trackback excerpt: ') . "\r\n" . $comment_content . "\r\n\r\n"; break; case 'pingback': $notify_message = sprintf( __('A new pingback on the post "%s" is waiting for your approval'), $post->post_title ) . "\r\n"; $notify_message .= get_permalink($comment->comment_post_ID) . "\r\n\r\n"; - $notify_message .= sprintf( __('Website : %1$s (IP: %2$s , %3$s)'), $comment->comment_author, $comment->comment_author_IP, $comment_author_domain ) . "\r\n"; - $notify_message .= sprintf( __('URL : %s'), $comment->comment_author_url ) . "\r\n"; - $notify_message .= __('Pingback excerpt: ') . "\r\n" . $comment->comment_content . "\r\n\r\n"; + /* translators: 1: website name, 2: website IP, 3: website hostname */ + $notify_message .= sprintf( __( 'Website: %1$s (IP: %2$s, %3$s)' ), $comment->comment_author, $comment->comment_author_IP, $comment_author_domain ) . "\r\n"; + $notify_message .= sprintf( __( 'URL: %s' ), $comment->comment_author_url ) . "\r\n"; + $notify_message .= __('Pingback excerpt: ') . "\r\n" . $comment_content . "\r\n\r\n"; break; default: // Comments $notify_message = sprintf( __('A new comment on the post "%s" is waiting for your approval'), $post->post_title ) . "\r\n"; $notify_message .= get_permalink($comment->comment_post_ID) . "\r\n\r\n"; - $notify_message .= sprintf( __('Author : %1$s (IP: %2$s , %3$s)'), $comment->comment_author, $comment->comment_author_IP, $comment_author_domain ) . "\r\n"; - $notify_message .= sprintf( __('E-mail : %s'), $comment->comment_author_email ) . "\r\n"; - $notify_message .= sprintf( __('URL : %s'), $comment->comment_author_url ) . "\r\n"; - $notify_message .= sprintf( __('Whois : http://whois.arin.net/rest/ip/%s'), $comment->comment_author_IP ) . "\r\n"; - $notify_message .= __('Comment: ') . "\r\n" . $comment->comment_content . "\r\n\r\n"; + $notify_message .= sprintf( __( 'Author: %1$s (IP: %2$s, %3$s)' ), $comment->comment_author, $comment->comment_author_IP, $comment_author_domain ) . "\r\n"; + $notify_message .= sprintf( __( 'Email: %s' ), $comment->comment_author_email ) . "\r\n"; + $notify_message .= sprintf( __( 'URL: %s' ), $comment->comment_author_url ) . "\r\n"; + $notify_message .= sprintf( __( 'Comment: %s' ), "\r\n" . $comment_content ) . "\r\n\r\n"; break; } @@ -1551,9 +1715,9 @@ if ( !function_exists('wp_password_change_notification') ) : * * @since 2.7.0 * - * @param object $user User Object + * @param WP_User $user User object. */ -function wp_password_change_notification(&$user) { +function wp_password_change_notification( $user ) { // send a copy of password change notification to the admin // but check to see if it's the admin whose password we're changing, and skip this if ( 0 !== strcasecmp( $user->user_email, get_option( 'admin_email' ) ) ) { @@ -1573,11 +1737,23 @@ if ( !function_exists('wp_new_user_notification') ) : * A new user registration notification is also sent to admin email. * * @since 2.0.0 + * @since 4.3.0 The `$plaintext_pass` parameter was changed to `$notify`. + * @since 4.3.1 The `$plaintext_pass` parameter was deprecated. `$notify` added as a third parameter. + * + * @global wpdb $wpdb WordPress database object for queries. + * @global PasswordHash $wp_hasher Portable PHP password hashing framework instance. * - * @param int $user_id User ID. - * @param string $plaintext_pass Optional. The user's plaintext password. Default empty. + * @param int $user_id User ID. + * @param null $deprecated Not used (argument deprecated). + * @param string $notify Optional. Type of notification that should happen. Accepts 'admin' or an empty + * string (admin only), or 'both' (admin and user). Default empty. */ -function wp_new_user_notification($user_id, $plaintext_pass = '') { +function wp_new_user_notification( $user_id, $deprecated = null, $notify = '' ) { + if ( $deprecated !== null ) { + _deprecated_argument( __FUNCTION__, '4.3.1' ); + } + + global $wpdb, $wp_hasher; $user = get_userdata( $user_id ); // The blogname option is escaped with esc_html on the way into the database in sanitize_option @@ -1586,19 +1762,36 @@ function wp_new_user_notification($user_id, $plaintext_pass = '') { $message = sprintf(__('New user registration on your site %s:'), $blogname) . "\r\n\r\n"; $message .= sprintf(__('Username: %s'), $user->user_login) . "\r\n\r\n"; - $message .= sprintf(__('E-mail: %s'), $user->user_email) . "\r\n"; + $message .= sprintf(__('Email: %s'), $user->user_email) . "\r\n"; @wp_mail(get_option('admin_email'), sprintf(__('[%s] New User Registration'), $blogname), $message); - if ( empty($plaintext_pass) ) + // `$deprecated was pre-4.3 `$plaintext_pass`. An empty `$plaintext_pass` didn't sent a user notifcation. + if ( 'admin' === $notify || ( empty( $deprecated ) && empty( $notify ) ) ) { return; + } - $message = sprintf(__('Username: %s'), $user->user_login) . "\r\n"; - $message .= sprintf(__('Password: %s'), $plaintext_pass) . "\r\n"; - $message .= wp_login_url() . "\r\n"; + // Generate something random for a password reset key. + $key = wp_generate_password( 20, false ); + + /** This action is documented in wp-login.php */ + do_action( 'retrieve_password_key', $user->user_login, $key ); + + // Now insert the key, hashed, into the DB. + if ( empty( $wp_hasher ) ) { + require_once ABSPATH . WPINC . '/class-phpass.php'; + $wp_hasher = new PasswordHash( 8, true ); + } + $hashed = time() . ':' . $wp_hasher->HashPassword( $key ); + $wpdb->update( $wpdb->users, array( 'user_activation_key' => $hashed ), array( 'user_login' => $user->user_login ) ); - wp_mail($user->user_email, sprintf(__('[%s] Your username and password'), $blogname), $message); + $message = sprintf(__('Username: %s'), $user->user_login) . "\r\n\r\n"; + $message .= __('To set your password, visit the following address:') . "\r\n\r\n"; + $message .= '<' . network_site_url("wp-login.php?action=rp&key=$key&login=" . rawurlencode($user->user_login), 'login') . ">\r\n\r\n"; + $message .= wp_login_url() . "\r\n"; + + wp_mail($user->user_email, sprintf(__('[%s] Your username and password info'), $blogname), $message); } endif; @@ -1611,7 +1804,7 @@ if ( !function_exists('wp_nonce_tick') ) : * * @since 2.5.0 * - * @return int + * @return float Float value rounded up to the next highest integer. */ function wp_nonce_tick() { /** @@ -1636,11 +1829,13 @@ if ( !function_exists('wp_verify_nonce') ) : * * @since 2.0.3 * - * @param string $nonce Nonce that was used in the form to verify + * @param string $nonce Nonce that was used in the form to verify * @param string|int $action Should give context to what is taking place and be the same when nonce was created. - * @return bool Whether the nonce check passed or failed. + * @return false|int False if the nonce is invalid, 1 if the nonce is valid and generated between + * 0-12 hours ago, 2 if the nonce is valid and generated between 12-24 hours ago. */ -function wp_verify_nonce($nonce, $action = -1) { +function wp_verify_nonce( $nonce, $action = -1 ) { + $nonce = (string) $nonce; $user = wp_get_current_user(); $uid = (int) $user->ID; if ( ! $uid ) { @@ -1655,20 +1850,37 @@ function wp_verify_nonce($nonce, $action = -1) { $uid = apply_filters( 'nonce_user_logged_out', $uid, $action ); } + if ( empty( $nonce ) ) { + return false; + } + + $token = wp_get_session_token(); $i = wp_nonce_tick(); // Nonce generated 0-12 hours ago - $expected = substr( wp_hash( $i . '|' . $action . '|' . $uid, 'nonce'), -12, 10 ); + $expected = substr( wp_hash( $i . '|' . $action . '|' . $uid . '|' . $token, 'nonce'), -12, 10 ); if ( hash_equals( $expected, $nonce ) ) { return 1; } // Nonce generated 12-24 hours ago - $expected = substr( wp_hash( ( $i - 1 ) . '|' . $action . '|' . $uid, 'nonce' ), -12, 10 ); + $expected = substr( wp_hash( ( $i - 1 ) . '|' . $action . '|' . $uid . '|' . $token, 'nonce' ), -12, 10 ); if ( hash_equals( $expected, $nonce ) ) { return 2; } + /** + * Fires when nonce verification fails. + * + * @since 4.4.0 + * + * @param string $nonce The invalid nonce. + * @param string|int $action The nonce action. + * @param WP_User $user The current user object. + * @param string $token The user's session token. + */ + do_action( 'wp_verify_nonce_failed', $nonce, $action, $user, $token ); + // Invalid nonce return false; } @@ -1676,12 +1888,14 @@ endif; if ( !function_exists('wp_create_nonce') ) : /** - * Creates a random, one time use token. + * Creates a cryptographic token tied to a specific action, user, user session, + * and window of time. * * @since 2.0.3 + * @since 4.0.0 Session tokens were integrated with nonce creation * * @param string|int $action Scalar value to add context to the nonce. - * @return string The one use form token + * @return string The token. */ function wp_create_nonce($action = -1) { $user = wp_get_current_user(); @@ -1691,9 +1905,10 @@ function wp_create_nonce($action = -1) { $uid = apply_filters( 'nonce_user_logged_out', $uid, $action ); } + $token = wp_get_session_token(); $i = wp_nonce_tick(); - return substr(wp_hash($i . '|' . $action . '|' . $uid, 'nonce'), -12, 10); + return substr( wp_hash( $i . '|' . $action . '|' . $uid . '|' . $token, 'nonce' ), -12, 10 ); } endif; @@ -1711,16 +1926,14 @@ if ( !function_exists('wp_salt') ) : * {@link https://api.wordpress.org/secret-key/1.1/salt/ secret key created} just * for you. * - * - * define('AUTH_KEY', ' XakmM%G4Yt>f`z]MON'); - * define('SECURE_AUTH_KEY', 'LzJ}op]mr|6+![P}Ak:uNdJCJZd>(Hx.-Mh#Tz)pCIU#uGEnfFz|f ;;eU%/U^O~'); - * define('LOGGED_IN_KEY', '|i|Ux`9z7X>QYR0Z_XnZ@|'); - * define('AUTH_SALT', 'eZyT)-Naw]F8CwA*VaW#q*|.)g@o}||wf~@C-YSt}(dh_r6EbI#A,y|nU2{B#JBW'); - * define('SECURE_AUTH_SALT', '!=oLUTXh,QW=H `}`L|9/^4-3 STz},T(w}W*c(u`g~EJBf#8u#R{mUEZrozmm'); - * define('NONCE_SALT', 'h`GXHhD>SLWVfg1(1(N{;.V!MoE(SfbA_ksP@&`+AycHcAV$+?@3q+rxV{%^VyKT'); - * + * define('AUTH_KEY', ' XakmM%G4Yt>f`z]MON'); + * define('SECURE_AUTH_KEY', 'LzJ}op]mr|6+![P}Ak:uNdJCJZd>(Hx.-Mh#Tz)pCIU#uGEnfFz|f ;;eU%/U^O~'); + * define('LOGGED_IN_KEY', '|i|Ux`9z7X>QYR0Z_XnZ@|'); + * define('AUTH_SALT', 'eZyT)-Naw]F8CwA*VaW#q*|.)g@o}||wf~@C-YSt}(dh_r6EbI#A,y|nU2{B#JBW'); + * define('SECURE_AUTH_SALT', '!=oLUTXh,QW=H `}`L|9/^4-3 STz},T(w}W*c(u`g~EJBf#8u#R{mUEZrozmm'); + * define('NONCE_SALT', 'h`GXHhD>SLWVfg1(1(N{;.V!MoE(SfbA_ksP@&`+AycHcAV$+?@3q+rxV{%^VyKT'); * * Salting passwords helps against tools which has stored hashed values of * common dictionary strings. The added values makes it harder to crack. @@ -1729,6 +1942,9 @@ if ( !function_exists('wp_salt') ) : * * @link https://api.wordpress.org/secret-key/1.1/salt/ Create secrets for wp-config.php * + * @staticvar array $cached_salts + * @staticvar array $duplicated_keys + * * @param string $scheme Authentication scheme (auth, secure_auth, logged_in, nonce) * @return string Salt value */ @@ -1752,45 +1968,51 @@ function wp_salt( $scheme = 'auth' ) { $duplicated_keys = array( 'put your unique phrase here' => true ); foreach ( array( 'AUTH', 'SECURE_AUTH', 'LOGGED_IN', 'NONCE', 'SECRET' ) as $first ) { foreach ( array( 'KEY', 'SALT' ) as $second ) { - if ( ! defined( "{$first}_{$second}" ) ) + if ( ! defined( "{$first}_{$second}" ) ) { continue; + } $value = constant( "{$first}_{$second}" ); $duplicated_keys[ $value ] = isset( $duplicated_keys[ $value ] ); } } } - $key = $salt = ''; - if ( defined( 'SECRET_KEY' ) && SECRET_KEY && empty( $duplicated_keys[ SECRET_KEY ] ) ) - $key = SECRET_KEY; - if ( 'auth' == $scheme && defined( 'SECRET_SALT' ) && SECRET_SALT && empty( $duplicated_keys[ SECRET_SALT ] ) ) - $salt = SECRET_SALT; + $values = array( + 'key' => '', + 'salt' => '' + ); + if ( defined( 'SECRET_KEY' ) && SECRET_KEY && empty( $duplicated_keys[ SECRET_KEY ] ) ) { + $values['key'] = SECRET_KEY; + } + if ( 'auth' == $scheme && defined( 'SECRET_SALT' ) && SECRET_SALT && empty( $duplicated_keys[ SECRET_SALT ] ) ) { + $values['salt'] = SECRET_SALT; + } if ( in_array( $scheme, array( 'auth', 'secure_auth', 'logged_in', 'nonce' ) ) ) { foreach ( array( 'key', 'salt' ) as $type ) { $const = strtoupper( "{$scheme}_{$type}" ); if ( defined( $const ) && constant( $const ) && empty( $duplicated_keys[ constant( $const ) ] ) ) { - $$type = constant( $const ); - } elseif ( ! $$type ) { - $$type = get_site_option( "{$scheme}_{$type}" ); - if ( ! $$type ) { - $$type = wp_generate_password( 64, true, true ); - update_site_option( "{$scheme}_{$type}", $$type ); + $values[ $type ] = constant( $const ); + } elseif ( ! $values[ $type ] ) { + $values[ $type ] = get_site_option( "{$scheme}_{$type}" ); + if ( ! $values[ $type ] ) { + $values[ $type ] = wp_generate_password( 64, true, true ); + update_site_option( "{$scheme}_{$type}", $values[ $type ] ); } } } } else { - if ( ! $key ) { - $key = get_site_option( 'secret_key' ); - if ( ! $key ) { - $key = wp_generate_password( 64, true, true ); - update_site_option( 'secret_key', $key ); + if ( ! $values['key'] ) { + $values['key'] = get_site_option( 'secret_key' ); + if ( ! $values['key'] ) { + $values['key'] = wp_generate_password( 64, true, true ); + update_site_option( 'secret_key', $values['key'] ); } } - $salt = hash_hmac( 'md5', $scheme, $key ); + $values['salt'] = hash_hmac( 'md5', $scheme, $values['key'] ); } - $cached_salts[ $scheme ] = $key . $salt; + $cached_salts[ $scheme ] = $values['key'] . $values['salt']; /** This filter is documented in wp-includes/pluggable.php */ return apply_filters( 'salt', $cached_salts[ $scheme ], $scheme ); @@ -1802,7 +2024,6 @@ if ( !function_exists('wp_hash') ) : * Get hash of given string. * * @since 2.0.3 - * @uses wp_salt() Get WordPress salt * * @param string $data Plain text to hash * @return string Hash of $data @@ -1823,8 +2044,7 @@ if ( !function_exists('wp_hash_password') ) : * * @since 2.5.0 * - * @global object $wp_hasher PHPass object - * @uses PasswordHash::HashPassword + * @global PasswordHash $wp_hasher PHPass object * * @param string $password Plain text user password to hash * @return string The hash string of the password @@ -1833,7 +2053,7 @@ function wp_hash_password($password) { global $wp_hasher; if ( empty($wp_hasher) ) { - require_once( ABSPATH . 'wp-includes/class-phpass.php'); + require_once( ABSPATH . WPINC . '/class-phpass.php'); // By default, use the portable hash from phpass $wp_hasher = new PasswordHash(8, true); } @@ -1856,12 +2076,12 @@ if ( !function_exists('wp_check_password') ) : * * @since 2.5.0 * - * @global object $wp_hasher PHPass object used for checking the password + * @global PasswordHash $wp_hasher PHPass object used for checking the password * against the $hash + $password * @uses PasswordHash::CheckPassword * * @param string $password Plaintext user's password - * @param string $hash Hash of the user's password to check against. + * @param string $hash Hash of the user's password to check against. * @return bool False, if the $password does not match the hashed password */ function wp_check_password($password, $hash, $user_id = '') { @@ -1869,7 +2089,7 @@ function wp_check_password($password, $hash, $user_id = '') { // If the hash is still md5... if ( strlen($hash) <= 32 ) { - $check = ( $hash == md5($password) ); + $check = hash_equals( $hash, md5( $password ) ); if ( $check && $user_id ) { // Rehash using new hash. wp_set_password($password, $user_id); @@ -1881,9 +2101,10 @@ function wp_check_password($password, $hash, $user_id = '') { * * @since 2.5.0 * - * @param bool $check Whether the passwords match. - * @param string $hash The hashed password. - * @param int $user_id User ID. + * @param bool $check Whether the passwords match. + * @param string $password The plaintext password. + * @param string $hash The hashed password. + * @param int $user_id User ID. */ return apply_filters( 'check_password', $check, $password, $hash, $user_id ); } @@ -1891,7 +2112,7 @@ function wp_check_password($password, $hash, $user_id = '') { // If the stored hash is longer than an MD5, presume the // new style phpass portable hash. if ( empty($wp_hasher) ) { - require_once( ABSPATH . 'wp-includes/class-phpass.php'); + require_once( ABSPATH . WPINC . '/class-phpass.php'); // By default, use the portable hash from phpass $wp_hasher = new PasswordHash(8, true); } @@ -1909,12 +2130,13 @@ if ( !function_exists('wp_generate_password') ) : * * @since 2.5.0 * - * @param int $length The length of password to generate - * @param bool $special_chars Whether to include standard special characters. Default true. - * @param bool $extra_special_chars Whether to include other special characters. Used when - * generating secret keys and salts. Default false. - * @return string The random password - **/ + * @param int $length Optional. The length of password to generate. Default 12. + * @param bool $special_chars Optional. Whether to include standard special characters. + * Default true. + * @param bool $extra_special_chars Optional. Whether to include other special characters. + * Used when generating secret keys and salts. Default false. + * @return string The random password. + */ function wp_generate_password( $length = 12, $special_chars = true, $extra_special_chars = false ) { $chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'; if ( $special_chars ) @@ -1943,6 +2165,11 @@ if ( !function_exists('wp_rand') ) : * Generates a random number * * @since 2.6.2 + * @since 4.4.0 Uses PHP7 random_int() or the random_compat library if available. + * + * @global string $rnd_value + * @staticvar string $seed + * @staticvar bool $external_rand_source_available * * @param int $min Lower limit for the generated number * @param int $max Upper limit for the generated number @@ -1951,6 +2178,34 @@ if ( !function_exists('wp_rand') ) : function wp_rand( $min = 0, $max = 0 ) { global $rnd_value; + // Some misconfigured 32bit environments (Entropy PHP, for example) truncate integers larger than PHP_INT_MAX to PHP_INT_MAX rather than overflowing them to floats. + $max_random_number = 3000000000 === 2147483647 ? (float) "4294967295" : 4294967295; // 4294967295 = 0xffffffff + + // We only handle Ints, floats are truncated to their integer value. + $min = (int) $min; + $max = (int) $max; + + // Use PHP's CSPRNG, or a compatible method + static $use_random_int_functionality = true; + if ( $use_random_int_functionality ) { + try { + $_max = ( 0 != $max ) ? $max : $max_random_number; + // wp_rand() can accept arguements in either order, PHP cannot. + $_max = max( $min, $_max ); + $_min = min( $min, $_max ); + $val = random_int( $_min, $_max ); + if ( false !== $val ) { + return absint( $val ); + } else { + $use_random_int_functionality = false; + } + } catch ( Error $e ) { + $use_random_int_functionality = false; + } catch ( Exception $e ) { + $use_random_int_functionality = false; + } + } + // Reset $rnd_value after 14 uses // 32(md5) + 40(sha1) + 40(sha1) / 8 = 14 random numbers from $rnd_value if ( strlen($rnd_value) < 8 ) { @@ -1962,8 +2217,9 @@ function wp_rand( $min = 0, $max = 0 ) { $rnd_value .= sha1($rnd_value); $rnd_value .= sha1($rnd_value . $seed); $seed = md5($seed . $rnd_value); - if ( ! defined( 'WP_SETUP_CONFIG' ) ) - set_transient('random_seed', $seed); + if ( ! defined( 'WP_SETUP_CONFIG' ) && ! defined( 'WP_INSTALLING' ) ) { + set_transient( 'random_seed', $seed ); + } } // Take the first 8 digits for our value @@ -1974,9 +2230,6 @@ function wp_rand( $min = 0, $max = 0 ) { $value = abs(hexdec($value)); - // Some misconfigured 32bit environments (Entropy PHP, for example) truncate integers larger than PHP_INT_MAX to PHP_INT_MAX rather than overflowing them to floats. - $max_random_number = 3000000000 === 2147483647 ? (float) "4294967295" : 4294967295; // 4294967295 = 0xffffffff - // Reduce the value to be within the min - max range if ( $max != 0 ) $value = $min + ( $max - $min + 1 ) * $value / ( $max_random_number + 1 ); @@ -1992,13 +2245,16 @@ if ( !function_exists('wp_set_password') ) : * For integration with other applications, this function can be overwritten to * instead use the other package password checking algorithm. * + * Please note: This function should be used sparingly and is really only meant for single-time + * application. Leveraging this improperly in a plugin or theme could result in an endless loop + * of password resets if precautions are not taken to ensure it does not execute on every page load. + * * @since 2.5.0 * - * @uses $wpdb WordPress database object for queries - * @uses wp_hash_password() Used to encrypt the user's password before passing to the database + * @global wpdb $wpdb WordPress database abstraction object. * * @param string $password The plaintext new user password - * @param int $user_id User ID + * @param int $user_id User ID */ function wp_set_password( $password, $user_id ) { global $wpdb; @@ -2012,123 +2268,150 @@ endif; if ( !function_exists( 'get_avatar' ) ) : /** - * Retrieve the avatar for a user who provided a user ID or email address. + * Retrieve the avatar `` tag for a user, email address, MD5 hash, comment, or post. * * @since 2.5.0 - * - * @param int|string|object $id_or_email A user ID, email address, or comment object - * @param int $size Size of the avatar image - * @param string $default URL to a default image to use if no avatar is available - * @param string $alt Alternative text to use in image tag. Defaults to blank - * @return string tag for the user's avatar -*/ -function get_avatar( $id_or_email, $size = '96', $default = '', $alt = false ) { - if ( ! get_option('show_avatars') ) - return false; + * @since 4.2.0 Optional `$args` parameter added. + * + * @param mixed $id_or_email The Gravatar to retrieve. Accepts a user_id, gravatar md5 hash, + * user email, WP_User object, WP_Post object, or WP_Comment object. + * @param int $size Optional. Height and width of the avatar image file in pixels. Default 96. + * @param string $default Optional. URL for the default image or a default type. Accepts '404' + * (return a 404 instead of a default image), 'retro' (8bit), 'monsterid' + * (monster), 'wavatar' (cartoon face), 'indenticon' (the "quilt"), + * 'mystery', 'mm', or 'mysteryman' (The Oyster Man), 'blank' (transparent GIF), + * or 'gravatar_default' (the Gravatar logo). Default is the value of the + * 'avatar_default' option, with a fallback of 'mystery'. + * @param string $alt Optional. Alternative text to use in <img> tag. Default empty. + * @param array $args { + * Optional. Extra arguments to retrieve the avatar. + * + * @type int $height Display height of the avatar in pixels. Defaults to $size. + * @type int $width Display width of the avatar in pixels. Defaults to $size. + * @type bool $force_default Whether to always show the default image, never the Gravatar. Default false. + * @type string $rating What rating to display avatars up to. Accepts 'G', 'PG', 'R', 'X', and are + * judged in that order. Default is the value of the 'avatar_rating' option. + * @type string $scheme URL scheme to use. See set_url_scheme() for accepted values. + * Default null. + * @type array|string $class Array or string of additional classes to add to the <img> element. + * Default null. + * @type bool $force_display Whether to always show the avatar - ignores the show_avatars option. + * Default false. + * @type string $extra_attr HTML attributes to insert in the IMG element. Is not sanitized. Default empty. + * } + * @return false|string `` tag for the user's avatar. False on failure. + */ +function get_avatar( $id_or_email, $size = 96, $default = '', $alt = '', $args = null ) { + $defaults = array( + // get_avatar_data() args. + 'size' => 96, + 'height' => null, + 'width' => null, + 'default' => get_option( 'avatar_default', 'mystery' ), + 'force_default' => false, + 'rating' => get_option( 'avatar_rating' ), + 'scheme' => null, + 'alt' => '', + 'class' => null, + 'force_display' => false, + 'extra_attr' => '', + ); + + if ( empty( $args ) ) { + $args = array(); + } - if ( false === $alt) - $safe_alt = ''; - else - $safe_alt = esc_attr( $alt ); + $args['size'] = (int) $size; + $args['default'] = $default; + $args['alt'] = $alt; - if ( !is_numeric($size) ) - $size = '96'; + $args = wp_parse_args( $args, $defaults ); - $email = ''; - if ( is_numeric($id_or_email) ) { - $id = (int) $id_or_email; - $user = get_userdata($id); - if ( $user ) - $email = $user->user_email; - } elseif ( is_object($id_or_email) ) { - // No avatar for pingbacks or trackbacks + if ( empty( $args['height'] ) ) { + $args['height'] = $args['size']; + } + if ( empty( $args['width'] ) ) { + $args['width'] = $args['size']; + } - /** - * Filter the list of allowed comment types for retrieving avatars. - * - * @since 3.0.0 - * - * @param array $types An array of content types. Default only contains 'comment'. - */ - $allowed_comment_types = apply_filters( 'get_avatar_comment_types', array( 'comment' ) ); - if ( ! empty( $id_or_email->comment_type ) && ! in_array( $id_or_email->comment_type, (array) $allowed_comment_types ) ) - return false; + if ( is_object( $id_or_email ) && isset( $id_or_email->comment_ID ) ) { + $id_or_email = get_comment( $id_or_email ); + } - if ( ! empty( $id_or_email->user_id ) ) { - $id = (int) $id_or_email->user_id; - $user = get_userdata($id); - if ( $user ) - $email = $user->user_email; - } + /** + * Filter whether to retrieve the avatar URL early. + * + * Passing a non-null value will effectively short-circuit get_avatar(), passing + * the value through the {@see 'pre_get_avatar'} filter and returning early. + * + * @since 4.2.0 + * + * @param string $avatar HTML for the user's avatar. Default null. + * @param mixed $id_or_email The Gravatar to retrieve. Accepts a user_id, gravatar md5 hash, + * user email, WP_User object, WP_Post object, or WP_Comment object. + * @param array $args Arguments passed to get_avatar_url(), after processing. + */ + $avatar = apply_filters( 'pre_get_avatar', null, $id_or_email, $args ); - if ( ! $email && ! empty( $id_or_email->comment_author_email ) ) - $email = $id_or_email->comment_author_email; - } else { - $email = $id_or_email; + if ( ! is_null( $avatar ) ) { + /** This filter is documented in wp-includes/pluggable.php */ + return apply_filters( 'get_avatar', $avatar, $id_or_email, $args['size'], $args['default'], $args['alt'], $args ); } - if ( empty($default) ) { - $avatar_default = get_option('avatar_default'); - if ( empty($avatar_default) ) - $default = 'mystery'; - else - $default = $avatar_default; + if ( ! $args['force_display'] && ! get_option( 'show_avatars' ) ) { + return false; } - if ( !empty($email) ) - $email_hash = md5( strtolower( trim( $email ) ) ); + $url2x = get_avatar_url( $id_or_email, array_merge( $args, array( 'size' => $args['size'] * 2 ) ) ); - if ( is_ssl() ) { - $host = 'https://secure.gravatar.com'; - } else { - if ( !empty($email) ) - $host = sprintf( "http://%d.gravatar.com", ( hexdec( $email_hash[0] ) % 2 ) ); - else - $host = 'http://0.gravatar.com'; - } - - if ( 'mystery' == $default ) - $default = "$host/avatar/ad516503a11cd5ca435acc9bb6523536?s={$size}"; // ad516503a11cd5ca435acc9bb6523536 == md5('unknown@gravatar.com') - elseif ( 'blank' == $default ) - $default = $email ? 'blank' : includes_url( 'images/blank.gif' ); - elseif ( !empty($email) && 'gravatar_default' == $default ) - $default = ''; - elseif ( 'gravatar_default' == $default ) - $default = "$host/avatar/?s={$size}"; - elseif ( empty($email) ) - $default = "$host/avatar/?d=$default&s={$size}"; - elseif ( strpos($default, 'http://') === 0 ) - $default = add_query_arg( 's', $size, $default ); - - if ( !empty($email) ) { - $out = "$host/avatar/"; - $out .= $email_hash; - $out .= '?s='.$size; - $out .= '&d=' . urlencode( $default ); - - $rating = get_option('avatar_rating'); - if ( !empty( $rating ) ) - $out .= "&r={$rating}"; - - $out = str_replace( '&', '&', esc_url( $out ) ); - $avatar = "{$safe_alt}"; - } else { - $out = esc_url( $default ); - $avatar = "{$safe_alt}"; + $args = get_avatar_data( $id_or_email, $args ); + + $url = $args['url']; + + if ( ! $url || is_wp_error( $url ) ) { + return false; + } + + $class = array( 'avatar', 'avatar-' . (int) $args['size'], 'photo' ); + + if ( ! $args['found_avatar'] || $args['force_default'] ) { + $class[] = 'avatar-default'; } + if ( $args['class'] ) { + if ( is_array( $args['class'] ) ) { + $class = array_merge( $class, $args['class'] ); + } else { + $class[] = $args['class']; + } + } + + $avatar = sprintf( + "%s", + esc_attr( $args['alt'] ), + esc_url( $url ), + esc_attr( "$url2x 2x" ), + esc_attr( join( ' ', $class ) ), + (int) $args['height'], + (int) $args['width'], + $args['extra_attr'] + ); + /** * Filter the avatar to retrieve. * * @since 2.5.0 + * @since 4.2.0 The `$args` parameter was added. * - * @param string $avatar Image tag for the user's avatar. - * @param int|object|string $id_or_email A user ID, email address, or comment object. - * @param int $size Square avatar width and height in pixels to retrieve. - * @param string $alt Alternative text to use in the avatar image tag. + * @param string $avatar <img> tag for the user's avatar. + * @param mixed $id_or_email The Gravatar to retrieve. Accepts a user_id, gravatar md5 hash, + * user email, WP_User object, WP_Post object, or WP_Comment object. + * @param int $size Square avatar width and height in pixels to retrieve. + * @param string $alt Alternative text to use in the avatar image tag. * Default empty. + * @param array $args Arguments passed to get_avatar_data(), after processing. */ - return apply_filters( 'get_avatar', $avatar, $id_or_email, $size, $default, $alt ); + return apply_filters( 'get_avatar', $avatar, $id_or_email, $args['size'], $args['default'], $args['alt'], $args ); } endif; @@ -2155,16 +2438,16 @@ if ( !function_exists( 'wp_text_diff' ) ) : * @uses Text_Diff * @uses WP_Text_Diff_Renderer_Table * - * @param string $left_string "old" (left) version of string - * @param string $right_string "new" (right) version of string - * @param string|array $args Optional. Change 'title', 'title_left', and 'title_right' defaults. + * @param string $left_string "old" (left) version of string + * @param string $right_string "new" (right) version of string + * @param string|array $args Optional. Change 'title', 'title_left', and 'title_right' defaults. * @return string Empty string if strings are equivalent or HTML with differences. */ function wp_text_diff( $left_string, $right_string, $args = null ) { $defaults = array( 'title' => '', 'title_left' => '', 'title_right' => '' ); $args = wp_parse_args( $args, $defaults ); - if ( !class_exists( 'WP_Text_Diff_Renderer_Table' ) ) + if ( ! class_exists( 'WP_Text_Diff_Renderer_Table', false ) ) require( ABSPATH . WPINC . '/wp-diff.php' ); $left_string = normalize_whitespace($left_string); @@ -2207,35 +2490,3 @@ function wp_text_diff( $left_string, $right_string, $args = null ) { } endif; -if ( ! function_exists( 'hash_equals' ) ) : -/** - * Compare two strings in constant time. - * - * This function is NOT pluggable. It is in this file (in addition to - * compat.php) to prevent errors if, during an update, pluggable.php - * copies over but compat.php does not. - * - * This function was added in PHP 5.6. - * It can leak the length of a string. - * - * @since 3.9.2 - * - * @param string $a Expected string. - * @param string $b Actual string. - * @return bool Whether strings are equal. - */ -function hash_equals( $a, $b ) { - $a_length = strlen( $a ); - if ( $a_length !== strlen( $b ) ) { - return false; - } - $result = 0; - - // Do not attempt to "optimize" this. - for ( $i = 0; $i < $a_length; $i++ ) { - $result |= ord( $a[ $i ] ) ^ ord( $b[ $i ] ); - } - - return $result === 0; -} -endif;