wp/wp-login.php
changeset 5 5e2f62d02dcd
parent 0 d970ebf37754
child 7 cf61fcea0001
--- a/wp/wp-login.php	Mon Jun 08 16:11:51 2015 +0000
+++ b/wp/wp-login.php	Tue Jun 09 03:35:32 2015 +0200
@@ -25,13 +25,13 @@
 /**
  * Output the login page header.
  *
- * @param string $title    Optional. WordPress Log In Page title to display in <title/> element. Default 'Log In'.
- * @param string $message  Optional. Message to display in header. Default empty.
- * @param string $wp_error Optional. The error to pass. Default empty.
- * @param WP_Error $wp_error Optional. WordPress Error Object
+ * @param string   $title    Optional. WordPress login Page title to display in the `<title>` element.
+ *                           Default 'Log In'.
+ * @param string   $message  Optional. Message to display in header. Default empty.
+ * @param WP_Error $wp_error Optional. The error to pass. Default empty.
  */
-function login_header($title = 'Log In', $message = '', $wp_error = '') {
-	global $error, $interim_login, $current_site, $action;
+function login_header( $title = 'Log In', $message = '', $wp_error = '' ) {
+	global $error, $interim_login, $action;
 
 	// Don't index any of these forms
 	add_action( 'login_head', 'wp_no_robots' );
@@ -57,18 +57,24 @@
 		add_action( 'login_head', 'wp_shake_js', 12 );
 
 	?><!DOCTYPE html>
-	<html xmlns="http://www.w3.org/1999/xhtml" <?php language_attributes(); ?>>
+	<!--[if IE 8]>
+		<html xmlns="http://www.w3.org/1999/xhtml" class="ie8" <?php language_attributes(); ?>>
+	<![endif]-->
+	<!--[if !(IE 8) ]><!-->
+		<html xmlns="http://www.w3.org/1999/xhtml" <?php language_attributes(); ?>>
+	<!--<![endif]-->
 	<head>
 	<meta http-equiv="Content-Type" content="<?php bloginfo('html_type'); ?>; charset=<?php bloginfo('charset'); ?>" />
 	<title><?php bloginfo('name'); ?> &rsaquo; <?php echo $title; ?></title>
 	<?php
 
-	wp_admin_css( 'wp-admin', true );
-	wp_admin_css( 'colors-fresh', true );
+	wp_admin_css( 'login', true );
 
-	// Remove all stored post data on logging out.
-	// This could be added by add_action('login_head'...) like wp_shake_js()
-	// but maybe better if it's not removable by plugins
+	/*
+	 * Remove all stored post data on logging out.
+	 * This could be added by add_action('login_head'...) like wp_shake_js(),
+	 * but maybe better if it's not removable by plugins
+	 */
 	if ( 'loggedout' == $wp_error->get_error_code() ) {
 		?>
 		<script>if("sessionStorage" in window){try{for(var key in sessionStorage){if(key.indexOf("wp-autosave-")!=-1){sessionStorage.removeItem(key)}}}catch(e){}};</script>
@@ -90,9 +96,9 @@
 
 	if ( is_multisite() ) {
 		$login_header_url   = network_home_url();
-		$login_header_title = $current_site->site_name;
+		$login_header_title = get_current_site()->site_name;
 	} else {
-		$login_header_url   = __( 'http://wordpress.org/' );
+		$login_header_url   = __( 'https://wordpress.org/' );
 		$login_header_title = __( 'Powered by WordPress' );
 	}
 
@@ -127,6 +133,7 @@
 		if ( 'success' ===  $interim_login )
 			$classes[] = 'interim-login-success';
 	}
+	$classes[] =' locale-' . sanitize_html_class( strtolower( str_replace( '_', '-', get_locale() ) ) );
 
 	/**
 	 * Filter the login page body classes.
@@ -142,7 +149,7 @@
 	</head>
 	<body class="login <?php echo esc_attr( implode( ' ', $classes ) ); ?>">
 	<div id="login">
-		<h1><a href="<?php echo esc_url( $login_header_url ); ?>" title="<?php echo esc_attr( $login_header_title ); ?>"><?php bloginfo( 'name' ); ?></a></h1>
+		<h1><a href="<?php echo esc_url( $login_header_url ); ?>" title="<?php echo esc_attr( $login_header_title ); ?>" tabindex="-1"><?php bloginfo( 'name' ); ?></a></h1>
 	<?php
 
 	unset( $login_header_url, $login_header_title );
@@ -168,12 +175,12 @@
 		$errors = '';
 		$messages = '';
 		foreach ( $wp_error->get_error_codes() as $code ) {
-			$severity = $wp_error->get_error_data($code);
-			foreach ( $wp_error->get_error_messages($code) as $error ) {
+			$severity = $wp_error->get_error_data( $code );
+			foreach ( $wp_error->get_error_messages( $code ) as $error_message ) {
 				if ( 'message' == $severity )
-					$messages .= '	' . $error . "<br />\n";
+					$messages .= '	' . $error_message . "<br />\n";
 				else
-					$errors .= '	' . $error . "<br />\n";
+					$errors .= '	' . $error_message . "<br />\n";
 			}
 		}
 		if ( ! empty( $errors ) ) {
@@ -257,18 +264,19 @@
 /**
  * Handles sending password retrieval email to user.
  *
- * @uses $wpdb WordPress Database object
+ * @global wpdb         $wpdb      WordPress database abstraction object.
+ * @global PasswordHash $wp_hasher Portable PHP password hashing framework.
  *
  * @return bool|WP_Error True: when finish. WP_Error on error
  */
 function retrieve_password() {
-	global $wpdb, $current_site, $wp_hasher;
+	global $wpdb, $wp_hasher;
 
 	$errors = new WP_Error();
 
 	if ( empty( $_POST['user_login'] ) ) {
 		$errors->add('empty_username', __('<strong>ERROR</strong>: Enter a username or e-mail address.'));
-	} else if ( strpos( $_POST['user_login'], '@' ) ) {
+	} elseif ( strpos( $_POST['user_login'], '@' ) ) {
 		$user_data = get_user_by( 'email', trim( $_POST['user_login'] ) );
 		if ( empty( $user_data ) )
 			$errors->add('invalid_email', __('<strong>ERROR</strong>: There is no user registered with that email address.'));
@@ -292,23 +300,24 @@
 		return $errors;
 	}
 
-	// redefining user_login ensures we return the right case in the email
+	// Redefining user_login ensures we return the right case in the email.
 	$user_login = $user_data->user_login;
 	$user_email = $user_data->user_email;
 
 	/**
 	 * Fires before a new password is retrieved.
 	 *
-	 * @since 1.5.2
-	 * @deprecated 1.5.2 Misspelled. Use 'retrieve_password' hook instead.
+	 * @since 1.5.0
+	 * @deprecated 1.5.1 Misspelled. Use 'retrieve_password' hook instead.
 	 *
 	 * @param string $user_login The user login name.
 	 */
 	do_action( 'retreive_password', $user_login );
+
 	/**
 	 * Fires before a new password is retrieved.
 	 *
-	 * @since 1.5.2
+	 * @since 1.5.1
 	 *
 	 * @param string $user_login The user login name.
 	 */
@@ -324,10 +333,11 @@
 	 */
 	$allow = apply_filters( 'allow_password_reset', true, $user_data->ID );
 
-	if ( ! $allow )
-		return new WP_Error('no_password_reset', __('Password reset is not allowed for this user'));
-	else if ( is_wp_error($allow) )
+	if ( ! $allow ) {
+		return new WP_Error( 'no_password_reset', __('Password reset is not allowed for this user') );
+	} elseif ( is_wp_error( $allow ) ) {
 		return $allow;
+	}
 
 	// Generate something random for a password reset key.
 	$key = wp_generate_password( 20, false );
@@ -344,7 +354,7 @@
 
 	// Now insert the key, hashed, into the DB.
 	if ( empty( $wp_hasher ) ) {
-		require_once ABSPATH . 'wp-includes/class-phpass.php';
+		require_once ABSPATH . WPINC . '/class-phpass.php';
 		$wp_hasher = new PasswordHash( 8, true );
 	}
 	$hashed = $wp_hasher->HashPassword( $key );
@@ -360,8 +370,10 @@
 	if ( is_multisite() )
 		$blogname = $GLOBALS['current_site']->site_name;
 	else
-		// 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.
+		/*
+		 * 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);
 
 	$title = sprintf( __('[%s] Password Reset'), $blogname );
@@ -374,17 +386,21 @@
 	 * @param string $title Default email title.
 	 */
 	$title = apply_filters( 'retrieve_password_title', $title );
+
 	/**
 	 * Filter the message body of the password reset mail.
 	 *
 	 * @since 2.8.0
+	 * @since 4.1.0 Added `$user_login` and `$user_data` parameters.
 	 *
-	 * @param string $message Default mail message.
-	 * @param string $key     The activation key.
+	 * @param string  $message    Default mail message.
+	 * @param string  $key        The activation key.
+	 * @param string  $user_login The username for the user.
+	 * @param WP_User $user_data  WP_User object.
 	 */
-	$message = apply_filters( 'retrieve_password_message', $message, $key );
+	$message = apply_filters( 'retrieve_password_message', $message, $key, $user_login, $user_data );
 
-	if ( $message && !wp_mail($user_email, $title, $message) )
+	if ( $message && !wp_mail( $user_email, wp_specialchars_decode( $title ), $message ) )
 		wp_die( __('The e-mail could not be sent.') . "<br />\n" . __('Possible reason: your host may have disabled the mail() function.') );
 
 	return true;
@@ -418,9 +434,10 @@
 }
 
 //Set a cookie now to see if they are supported by the browser.
-setcookie(TEST_COOKIE, 'WP Cookie check', 0, COOKIEPATH, COOKIE_DOMAIN);
+$secure = ( 'https' === parse_url( site_url(), PHP_URL_SCHEME ) && 'https' === parse_url( home_url(), PHP_URL_SCHEME ) );
+setcookie( TEST_COOKIE, 'WP Cookie check', 0, COOKIEPATH, COOKIE_DOMAIN, $secure );
 if ( SITECOOKIEPATH != COOKIEPATH )
-	setcookie(TEST_COOKIE, 'WP Cookie check', 0, SITECOOKIEPATH, COOKIE_DOMAIN);
+	setcookie( TEST_COOKIE, 'WP Cookie check', 0, SITECOOKIEPATH, COOKIE_DOMAIN, $secure );
 
 /**
  * Fires when the login form is initialized.
@@ -431,7 +448,7 @@
 /**
  * Fires before a specified login form action.
  *
- * The dynamic portion of the hook name, $action, refers to the action
+ * The dynamic portion of the hook name, `$action`, refers to the action
  * that brought the visitor to the login form. Actions include 'postpass',
  * 'logout', 'lostpassword', etc.
  *
@@ -445,7 +462,7 @@
 switch ($action) {
 
 case 'postpass' :
-	require_once ABSPATH . 'wp-includes/class-phpass.php';
+	require_once ABSPATH . WPINC . '/class-phpass.php';
 	$hasher = new PasswordHash( 8, true );
 
 	/**
@@ -459,23 +476,39 @@
 	 * @param int $expires The expiry time, as passed to setcookie().
 	 */
 	$expire = apply_filters( 'post_password_expires', time() + 10 * DAY_IN_SECONDS );
-	setcookie( 'wp-postpass_' . COOKIEHASH, $hasher->HashPassword( wp_unslash( $_POST['post_password'] ) ), $expire, COOKIEPATH );
+	$secure = ( 'https' === parse_url( home_url(), PHP_URL_SCHEME ) );
+	setcookie( 'wp-postpass_' . COOKIEHASH, $hasher->HashPassword( wp_unslash( $_POST['post_password'] ) ), $expire, COOKIEPATH, COOKIE_DOMAIN, $secure );
 
 	wp_safe_redirect( wp_get_referer() );
 	exit();
 
-break;
-
 case 'logout' :
 	check_admin_referer('log-out');
+
+	$user = wp_get_current_user();
+
 	wp_logout();
 
-	$redirect_to = !empty( $_REQUEST['redirect_to'] ) ? $_REQUEST['redirect_to'] : 'wp-login.php?loggedout=true';
+	if ( ! empty( $_REQUEST['redirect_to'] ) ) {
+		$redirect_to = $requested_redirect_to = $_REQUEST['redirect_to'];
+	} else {
+		$redirect_to = 'wp-login.php?loggedout=true';
+		$requested_redirect_to = '';
+	}
+
+	/**
+	 * Filter the log out redirect URL.
+	 *
+	 * @since 4.2.0
+	 *
+	 * @param string  $redirect_to           The redirect destination URL.
+	 * @param string  $requested_redirect_to The requested redirect destination URL passed as a parameter.
+	 * @param WP_User $user                  The WP_User object for the user that's logging out.
+	 */
+	$redirect_to = apply_filters( 'logout_redirect', $redirect_to, $requested_redirect_to, $user );
 	wp_safe_redirect( $redirect_to );
 	exit();
 
-break;
-
 case 'lostpassword' :
 case 'retrievepassword' :
 
@@ -508,7 +541,7 @@
 	/**
 	 * Fires before the lost password form.
 	 *
-	 * @since 1.5.2
+	 * @since 1.5.1
 	 */
 	do_action( 'lost_password' );
 
@@ -518,14 +551,14 @@
 
 ?>
 
-<form name="lostpasswordform" id="lostpasswordform" action="<?php echo esc_url( site_url( 'wp-login.php?action=lostpassword', 'login_post' ) ); ?>" method="post">
+<form name="lostpasswordform" id="lostpasswordform" action="<?php echo esc_url( network_site_url( 'wp-login.php?action=lostpassword', 'login_post' ) ); ?>" method="post">
 	<p>
 		<label for="user_login" ><?php _e('Username or E-mail:') ?><br />
 		<input type="text" name="user_login" id="user_login" class="input" value="<?php echo esc_attr($user_login); ?>" size="20" /></label>
 	</p>
 	<?php
 	/**
-	 * Fires inside the lostpassword <form> tags, before the hidden fields.
+	 * Fires inside the lostpassword form tags, before the hidden fields.
 	 *
 	 * @since 2.1.0
 	 */
@@ -539,13 +572,8 @@
 <?php
 if ( get_option( 'users_can_register' ) ) :
 	$registration_url = sprintf( '<a href="%s">%s</a>', esc_url( wp_registration_url() ), __( 'Register' ) );
-	/**
-	 * Filter the registration URL below the login form.
-	 *
-	 * @since 1.5.2
-	 *
-	 * @param string $registration_url Registration URL.
-	 */
+
+	/** This filter is documented in wp-includes/general-template.php */
 	echo ' | ' . apply_filters( 'register', $registration_url );
 endif;
 ?>
@@ -557,10 +585,28 @@
 
 case 'resetpass' :
 case 'rp' :
-	$user = check_password_reset_key($_GET['key'], $_GET['login']);
+	list( $rp_path ) = explode( '?', wp_unslash( $_SERVER['REQUEST_URI'] ) );
+	$rp_cookie = 'wp-resetpass-' . COOKIEHASH;
+	if ( isset( $_GET['key'] ) ) {
+		$value = sprintf( '%s:%s', wp_unslash( $_GET['login'] ), wp_unslash( $_GET['key'] ) );
+		setcookie( $rp_cookie, $value, 0, $rp_path, COOKIE_DOMAIN, is_ssl(), true );
+		wp_safe_redirect( remove_query_arg( array( 'key', 'login' ) ) );
+		exit;
+	}
 
-	if ( is_wp_error($user) ) {
-		if ( $user->get_error_code() === 'expired_key' )
+	if ( isset( $_COOKIE[ $rp_cookie ] ) && 0 < strpos( $_COOKIE[ $rp_cookie ], ':' ) ) {
+		list( $rp_login, $rp_key ) = explode( ':', wp_unslash( $_COOKIE[ $rp_cookie ] ), 2 );
+		$user = check_password_reset_key( $rp_key, $rp_login );
+		if ( isset( $_POST['pass1'] ) && ! hash_equals( $rp_key, $_POST['rp_key'] ) ) {
+			$user = false;
+		}
+	} else {
+		$user = false;
+	}
+
+	if ( ! $user || is_wp_error( $user ) ) {
+		setcookie( $rp_cookie, ' ', time() - YEAR_IN_SECONDS, $rp_path, COOKIE_DOMAIN, is_ssl(), true );
+		if ( $user && $user->get_error_code() === 'expired_key' )
 			wp_redirect( site_url( 'wp-login.php?action=lostpassword&error=expiredkey' ) );
 		else
 			wp_redirect( site_url( 'wp-login.php?action=lostpassword&error=invalidkey' ) );
@@ -584,6 +630,7 @@
 
 	if ( ( ! $errors->get_error_code() ) && isset( $_POST['pass1'] ) && !empty( $_POST['pass1'] ) ) {
 		reset_password($user, $_POST['pass1']);
+		setcookie( $rp_cookie, ' ', time() - YEAR_IN_SECONDS, $rp_path, COOKIE_DOMAIN, is_ssl(), true );
 		login_header( __( 'Password Reset' ), '<p class="message reset-pass">' . __( 'Your password has been reset.' ) . ' <a href="' . esc_url( wp_login_url() ) . '">' . __( 'Log in' ) . '</a></p>' );
 		login_footer();
 		exit;
@@ -595,8 +642,8 @@
 	login_header(__('Reset Password'), '<p class="message reset-pass">' . __('Enter your new password below.') . '</p>', $errors );
 
 ?>
-<form name="resetpassform" id="resetpassform" action="<?php echo esc_url( site_url( 'wp-login.php?action=resetpass&key=' . urlencode( $_GET['key'] ) . '&login=' . urlencode( $_GET['login'] ), 'login_post' ) ); ?>" method="post" autocomplete="off">
-	<input type="hidden" id="user_login" value="<?php echo esc_attr( $_GET['login'] ); ?>" autocomplete="off" />
+<form name="resetpassform" id="resetpassform" action="<?php echo esc_url( network_site_url( 'wp-login.php?action=resetpass', 'login_post' ) ); ?>" method="post" autocomplete="off">
+	<input type="hidden" id="user_login" value="<?php echo esc_attr( $rp_login ); ?>" autocomplete="off" />
 
 	<p>
 		<label for="pass1"><?php _e('New password') ?><br />
@@ -608,9 +655,20 @@
 	</p>
 
 	<div id="pass-strength-result" class="hide-if-no-js"><?php _e('Strength indicator'); ?></div>
-	<p class="description indicator-hint"><?php _e('Hint: The password should be at least seven characters long. To make it stronger, use upper and lower case letters, numbers and symbols like ! " ? $ % ^ &amp; ).'); ?></p>
+	<p class="description indicator-hint"><?php echo wp_get_password_hint(); ?></p>
+	<br class="clear" />
 
-	<br class="clear" />
+	<?php
+	/**
+	 * Fires following the 'Strength indicator' meter in the user password reset form.
+	 *
+	 * @since 3.9.0
+	 *
+	 * @param WP_User $user User object of the user whose password is being reset.
+	 */
+	do_action( 'resetpass_form', $user );
+	?>
+	<input type="hidden" name="rp_key" value="<?php echo esc_attr( $rp_key ); ?>" />
 	<p class="submit"><input type="submit" name="wp-submit" id="wp-submit" class="button button-primary button-large" value="<?php esc_attr_e('Reset Password'); ?>" /></p>
 </form>
 
@@ -619,7 +677,8 @@
 <?php
 if ( get_option( 'users_can_register' ) ) :
 	$registration_url = sprintf( '<a href="%s">%s</a>', esc_url( wp_registration_url() ), __( 'Register' ) );
-	/** This filter is documented in wp-login.php */
+
+	/** This filter is documented in wp-includes/general-template.php */
 	echo ' | ' . apply_filters( 'register', $registration_url );
 endif;
 ?>
@@ -631,7 +690,6 @@
 
 case 'register' :
 	if ( is_multisite() ) {
-		$sign_up_url = network_site_url( 'wp-signup.php' );
 		/**
 		 * Filter the Multisite sign up URL.
 		 *
@@ -639,7 +697,7 @@
 		 *
 		 * @param string $sign_up_url The sign up URL.
 		 */
-		wp_redirect( apply_filters( 'wp_signup_location', $sign_up_url ) );
+		wp_redirect( apply_filters( 'wp_signup_location', network_site_url( 'wp-signup.php' ) ) );
 		exit;
 	}
 
@@ -673,14 +731,14 @@
 	login_header(__('Registration Form'), '<p class="message register">' . __('Register For This Site') . '</p>', $errors);
 ?>
 
-<form name="registerform" id="registerform" action="<?php echo esc_url( site_url('wp-login.php?action=register', 'login_post') ); ?>" method="post">
+<form name="registerform" id="registerform" action="<?php echo esc_url( site_url('wp-login.php?action=register', 'login_post') ); ?>" method="post" novalidate="novalidate">
 	<p>
 		<label for="user_login"><?php _e('Username') ?><br />
 		<input type="text" name="user_login" id="user_login" class="input" value="<?php echo esc_attr(wp_unslash($user_login)); ?>" size="20" /></label>
 	</p>
 	<p>
 		<label for="user_email"><?php _e('E-mail') ?><br />
-		<input type="text" name="user_email" id="user_email" class="input" value="<?php echo esc_attr(wp_unslash($user_email)); ?>" size="25" /></label>
+		<input type="email" name="user_email" id="user_email" class="input" value="<?php echo esc_attr( wp_unslash( $user_email ) ); ?>" size="25" /></label>
 	</p>
 	<?php
 	/**
@@ -734,17 +792,18 @@
 
 	$reauth = empty($_REQUEST['reauth']) ? false : true;
 
-	// If the user was redirected to a secure login form from a non-secure admin page, and secure login is required but secure admin is not, then don't use a secure
-	// cookie and redirect back to the referring non-secure admin page. This allows logins to always be POSTed over SSL while allowing the user to choose visiting
-	// the admin via http or https.
-	if ( !$secure_cookie && is_ssl() && force_ssl_login() && !force_ssl_admin() && ( 0 !== strpos($redirect_to, 'https') ) && ( 0 === strpos($redirect_to, 'http') ) )
-		$secure_cookie = false;
+	$user = wp_signon( '', $secure_cookie );
 
-	// If cookies are disabled we can't log in even with a valid user+pass
-	if ( isset($_POST['testcookie']) && empty($_COOKIE[TEST_COOKIE]) )
-		$user = new WP_Error('test_cookie', __("<strong>ERROR</strong>: Cookies are blocked or not supported by your browser. You must <a href='http://www.google.com/cookies.html'>enable cookies</a> to use WordPress."));
-	else
-		$user = wp_signon('', $secure_cookie);
+	if ( empty( $_COOKIE[ LOGGED_IN_COOKIE ] ) ) {
+		if ( headers_sent() ) {
+			$user = new WP_Error( 'test_cookie', sprintf( __( '<strong>ERROR</strong>: Cookies are blocked due to unexpected output. For help, please see <a href="%1$s">this documentation</a> or try the <a href="%2$s">support forums</a>.' ),
+				__( 'https://codex.wordpress.org/Cookies' ), __( 'https://wordpress.org/support/' ) ) );
+		} elseif ( isset( $_POST['testcookie'] ) && empty( $_COOKIE[ TEST_COOKIE ] ) ) {
+			// If cookies are disabled we can't log in even with a valid user+pass
+			$user = new WP_Error( 'test_cookie', sprintf( __( '<strong>ERROR</strong>: Cookies are blocked or not supported by your browser. You must <a href="%s">enable cookies</a> to use WordPress.' ),
+				__( 'https://codex.wordpress.org/Cookies' ) ) );
+		}
+	}
 
 	$requested_redirect_to = isset( $_REQUEST['redirect_to'] ) ? $_REQUEST['redirect_to'] : '';
 	/**
@@ -808,7 +867,7 @@
 		elseif	( isset($_GET['checkemail']) && 'registered' == $_GET['checkemail'] )
 			$errors->add('registered', __('Registration complete. Please check your e-mail.'), 'message');
 		elseif ( strpos( $redirect_to, 'about.php?updated' ) )
-			$errors->add('updated', __( '<strong>You have successfully updated WordPress!</strong> Please log back in to experience the awesomeness.' ), 'message' );
+			$errors->add('updated', __( '<strong>You have successfully updated WordPress!</strong> Please log back in to see what&#8217;s new.' ), 'message' );
 	}
 
 	/**
@@ -830,16 +889,22 @@
 	if ( isset($_POST['log']) )
 		$user_login = ( 'incorrect_password' == $errors->get_error_code() || 'empty_password' == $errors->get_error_code() ) ? esc_attr(wp_unslash($_POST['log'])) : '';
 	$rememberme = ! empty( $_POST['rememberme'] );
+
+	if ( ! empty( $errors->errors ) ) {
+		$aria_describedby_error = ' aria-describedby="login_error"';
+	} else {
+		$aria_describedby_error = '';
+	}
 ?>
 
 <form name="loginform" id="loginform" action="<?php echo esc_url( site_url( 'wp-login.php', 'login_post' ) ); ?>" method="post">
 	<p>
 		<label for="user_login"><?php _e('Username') ?><br />
-		<input type="text" name="log" id="user_login" class="input" value="<?php echo esc_attr($user_login); ?>" size="20" /></label>
+		<input type="text" name="log" id="user_login"<?php echo $aria_describedby_error; ?> class="input" value="<?php echo esc_attr( $user_login ); ?>" size="20" /></label>
 	</p>
 	<p>
 		<label for="user_pass"><?php _e('Password') ?><br />
-		<input type="password" name="pwd" id="user_pass" class="input" value="" size="20" /></label>
+		<input type="password" name="pwd" id="user_pass"<?php echo $aria_describedby_error; ?> class="input" value="" size="20" /></label>
 	</p>
 	<?php
 	/**
@@ -869,7 +934,8 @@
 <?php if ( ! isset( $_GET['checkemail'] ) || ! in_array( $_GET['checkemail'], array( 'confirm', 'newpass' ) ) ) :
 	if ( get_option( 'users_can_register' ) ) :
 		$registration_url = sprintf( '<a href="%s">%s</a>', esc_url( wp_registration_url() ), __( 'Register' ) );
-		/** This filter is documented in wp-login.php */
+
+		/** This filter is documented in wp-includes/general-template.php */
 		echo apply_filters( 'register', $registration_url ) . ' | ';
 	endif;
 	?>
@@ -881,7 +947,7 @@
 <script type="text/javascript">
 function wp_attempt_focus(){
 setTimeout( function(){ try{
-<?php if ( $user_login || $interim_login ) { ?>
+<?php if ( $user_login ) { ?>
 d = document.getElementById('user_pass');
 d.value = '';
 <?php } else { ?>