X-Git-Url: https://scripts.mit.edu/gitweb/autoinstalls/wordpress.git/blobdiff_plain/7688c6ba71852cd89123b62b2d57683535e4702a..3d39054f012aefe514b3f5509e32f09fc4feda44:/wp-includes/pluggable.php diff --git a/wp-includes/pluggable.php b/wp-includes/pluggable.php index 32281e67..5c774777 100644 --- a/wp-includes/pluggable.php +++ b/wp-includes/pluggable.php @@ -1,218 +1,326 @@ 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); + $current_user = new WP_User( $id, $name ); - setup_userdata($current_user->ID); + setup_userdata( $current_user->ID ); - do_action('set_current_user'); + /** + * Fires after the current user is set. + * + * @since 2.0.1 + */ + do_action( 'set_current_user' ); return $current_user; } endif; if ( !function_exists('wp_get_current_user') ) : +/** + * Retrieve the current user object. + * + * Will set the current user, if the current user is not set. The current user + * will be set to the logged-in person. If no user is logged-in, then it will + * set the current user to 0, which is invalid and won't have any permissions. + * + * @since 2.0.3 + * + * @see _wp_get_current_user() + * @global WP_User $current_user Checks if the current user is set. + * + * @return WP_User Current WP_User instance. + */ function wp_get_current_user() { - global $current_user; - - get_currentuserinfo(); + return _wp_get_current_user(); +} +endif; - return $current_user; +if ( !function_exists('get_userdata') ) : +/** + * Retrieve user info by user ID. + * + * @since 0.71 + * + * @param int $user_id User ID + * @return WP_User|false WP_User object on success, false on failure. + */ +function get_userdata( $user_id ) { + return get_user_by( 'id', $user_id ); } endif; -if ( !function_exists('get_currentuserinfo') ) : -function get_currentuserinfo() { - global $current_user; +if ( !function_exists('get_user_by') ) : +/** + * Retrieve user info by a given field + * + * @since 2.8.0 + * @since 4.4.0 Added 'ID' as an alias of 'id' for the `$field` parameter. + * + * @param string $field The field to retrieve the user with. id | ID | slug | email | login. + * @param int|string $value A value for $field. A user ID, slug, email address, or login name. + * @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, $value ); - if ( defined('XMLRPC_REQUEST') && XMLRPC_REQUEST ) + if ( !$userdata ) return false; - if ( ! empty($current_user) ) - return; + $user = new WP_User; + $user->init( $userdata ); - if ( empty($_COOKIE[USER_COOKIE]) || empty($_COOKIE[PASS_COOKIE]) || - !wp_login($_COOKIE[USER_COOKIE], $_COOKIE[PASS_COOKIE], true) ) { - wp_set_current_user(0); - return false; - } - - $user_login = $_COOKIE[USER_COOKIE]; - wp_set_current_user(0, $user_login); + return $user; } endif; -if ( !function_exists('get_userdata') ) : -function get_userdata( $user_id ) { +if ( !function_exists('cache_users') ) : +/** + * Retrieve info for user lists to prevent multiple queries by get_userdata() + * + * @since 3.0.0 + * + * @global wpdb $wpdb WordPress database abstraction object. + * + * @param array $user_ids User ID numbers list + */ +function cache_users( $user_ids ) { global $wpdb; - $user_id = (int) $user_id; - if ( $user_id == 0 ) - return false; - $user = wp_cache_get($user_id, 'users'); + $clean = _get_non_cached_ids( $user_ids, 'users' ); - if ( $user ) - return $user; + if ( empty( $clean ) ) + return; - if ( !$user = $wpdb->get_row("SELECT * FROM $wpdb->users WHERE ID = '$user_id' LIMIT 1") ) - return false; + $list = implode( ',', $clean ); - $show = $wpdb->hide_errors(); - $metavalues = $wpdb->get_results("SELECT meta_key, meta_value FROM $wpdb->usermeta WHERE user_id = '$user_id'"); - $wpdb->show_errors($show); - - if ($metavalues) { - foreach ( $metavalues as $meta ) { - $value = maybe_unserialize($meta->meta_value); - $user->{$meta->meta_key} = $value; - - // We need to set user_level from meta, not row - if ( $wpdb->prefix . 'user_level' == $meta->meta_key ) - $user->user_level = $meta->meta_value; - } // end foreach - } //end if - - // For backwards compat. - if ( isset($user->first_name) ) - $user->user_firstname = $user->first_name; - if ( isset($user->last_name) ) - $user->user_lastname = $user->last_name; - if ( isset($user->description) ) - $user->user_description = $user->description; - - wp_cache_add($user_id, $user, 'users'); - wp_cache_add($user->user_login, $user_id, 'userlogins'); - return $user; -} -endif; + $users = $wpdb->get_results( "SELECT * FROM $wpdb->users WHERE ID IN ($list)" ); -if ( !function_exists('update_user_cache') ) : -function update_user_cache() { - return true; + $ids = array(); + foreach ( $users as $user ) { + update_user_caches( $user ); + $ids[] = $user->ID; + } + update_meta_cache( 'user', $ids ); } endif; -if ( !function_exists('get_userdatabylogin') ) : -function get_userdatabylogin($user_login) { - global $wpdb; - $user_login = sanitize_user( $user_login ); - - if ( empty( $user_login ) ) - return false; - - $user_id = wp_cache_get($user_login, 'userlogins'); - $userdata = wp_cache_get($user_id, 'users'); +if ( !function_exists( 'wp_mail' ) ) : +/** + * Send mail, similar to PHP's mail + * + * A true return value does not automatically mean that the user received the + * email successfully. It just only means that the method used was able to + * process the request without any errors. + * + * Using the two 'wp_mail_from' and 'wp_mail_from_name' hooks allow from + * creating a from address like 'Name ' when both are set. If + * just 'wp_mail_from' is set, then just the email address will be used with no + * name. + * + * The default content type is 'text/plain' which does not allow using HTML. + * However, you can set the content type of the email by using the + * {@see 'wp_mail_content_type'} filter. + * + * The default charset is based on the charset used on the blog. The charset can + * be set using the {@see 'wp_mail_charset'} filter. + * + * @since 1.2.1 + * + * @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 $attachments Optional. Files to attach. + * @return bool Whether the email contents were sent successfully. + */ +function wp_mail( $to, $subject, $message, $headers = '', $attachments = array() ) { + // Compact the input, apply the filters, and extract them back out - if ( $userdata ) - return $userdata; + /** + * Filters the wp_mail() arguments. + * + * @since 2.2.0 + * + * @param array $args A compacted array of wp_mail() arguments, including the "to" email, + * subject, message, headers, and attachments values. + */ + $atts = apply_filters( 'wp_mail', compact( 'to', 'subject', 'message', 'headers', 'attachments' ) ); + + if ( isset( $atts['to'] ) ) { + $to = $atts['to']; + } - $user_login = $wpdb->escape($user_login); + if ( isset( $atts['subject'] ) ) { + $subject = $atts['subject']; + } - if ( !$user_ID = $wpdb->get_var("SELECT ID FROM $wpdb->users WHERE user_login = '$user_login'") ) - return false; + if ( isset( $atts['message'] ) ) { + $message = $atts['message']; + } - $user = get_userdata($user_ID); - return $user; -} -endif; + if ( isset( $atts['headers'] ) ) { + $headers = $atts['headers']; + } -if ( !function_exists( 'wp_mail' ) ) : -function wp_mail( $to, $subject, $message, $headers = '' ) { - // Compact the input, apply the filters, and extract them back out - extract( apply_filters( 'wp_mail', compact( 'to', 'subject', 'message', '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(); + $phpmailer = new PHPMailer( true ); } // Headers + $cc = $bcc = $reply_to = array(); + if ( empty( $headers ) ) { $headers = array(); - } elseif ( !is_array( $headers ) ) { - // Explode the headers out, so this function can take both - // string headers and an array of headers. - $tempheaders = (array) explode( "\n", $headers ); + } else { + if ( !is_array( $headers ) ) { + // Explode the headers out, so this function can take both + // string headers and an array of headers. + $tempheaders = explode( "\n", str_replace( "\r\n", "\n", $headers ) ); + } else { + $tempheaders = $headers; + } $headers = array(); // If it's actually got contents if ( !empty( $tempheaders ) ) { // Iterate through the raw headers - foreach ( $tempheaders as $header ) { - if ( strpos($header, ':') === false ) + foreach ( (array) $tempheaders as $header ) { + if ( strpos($header, ':') === false ) { + if ( false !== stripos( $header, 'boundary=' ) ) { + $parts = preg_split('/boundary=/i', trim( $header ) ); + $boundary = trim( str_replace( array( "'", '"' ), '', $parts[1] ) ); + } continue; + } // Explode them out list( $name, $content ) = explode( ':', trim( $header ), 2 ); // Cleanup crew - $name = trim( $name ); + $name = trim( $name ); $content = trim( $content ); - // Mainly for legacy -- process a From: header if it's there - if ( 'from' == strtolower($name) ) { - 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 ); - - $from_email = substr( $content, strpos( $content, '<' ) + 1 ); - $from_email = str_replace( '>', '', $from_email ); - $from_email = trim( $from_email ); - } else { - $from_name = trim( $content ); - } - } elseif ( 'content-type' == strtolower($name) ) { - if ( strpos( $content,';' ) !== false ) { - list( $type, $charset ) = explode( ';', $content ); - $content_type = trim( $type ); - $charset = trim( str_replace( array( 'charset=', '"' ), '', $charset ) ); - } else { - $content_type = trim( $content ); - } - } else { - // Add it to our grand headers array - $headers[trim( $name )] = trim( $content ); + switch ( strtolower( $name ) ) { + // Mainly for legacy -- process a From: header if it's there + case 'from': + $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, $bracket_pos + 1 ); + $from_email = str_replace( '>', '', $from_email ); + $from_email = trim( $from_email ); + + // Avoid setting an empty $from_email. + } elseif ( '' !== trim( $content ) ) { + $from_email = trim( $content ); + } + break; + case 'content-type': + if ( strpos( $content, ';' ) !== false ) { + list( $type, $charset_content ) = explode( ';', $content ); + $content_type = trim( $type ); + 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 = ''; + } + + // Avoid setting an empty $content_type. + } elseif ( '' !== trim( $content ) ) { + $content_type = trim( $content ); + } + break; + case 'cc': + $cc = array_merge( (array) $cc, explode( ',', $content ) ); + break; + case 'bcc': + $bcc = array_merge( (array) $bcc, explode( ',', $content ) ); + break; + case 'reply-to': + $reply_to = array_merge( (array) $reply_to, explode( ',', $content ) ); + break; + default: + // Add it to our grand headers array + $headers[trim( $name )] = trim( $content ); + break; } } } } // Empty out the values that may be set - $phpmailer->ClearAddresses(); $phpmailer->ClearAllRecipients(); $phpmailer->ClearAttachments(); - $phpmailer->ClearBCCs(); - $phpmailer->ClearCCs(); $phpmailer->ClearCustomHeaders(); $phpmailer->ClearReplyTos(); // From email and name // If we don't have a name from the input headers - if ( !isset( $from_name ) ) { + if ( !isset( $from_name ) ) $from_name = 'WordPress'; - } - // If we don't have an email from the input headers + /* If we don't have an email from the input headers default to wordpress@$sitename + * 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 + * https://core.trac.wordpress.org/ticket/5007. + */ + if ( !isset( $from_email ) ) { // Get the site domain and get rid of www. $sitename = strtolower( $_SERVER['SERVER_NAME'] ); @@ -223,322 +331,1140 @@ function wp_mail( $to, $subject, $message, $headers = '' ) { $from_email = 'wordpress@' . $sitename; } - // Set the from name and email - $phpmailer->From = apply_filters( 'wp_mail_from', $from_email ); - $phpmailer->Sender = apply_filters( 'wp_mail_from', $from_email ); - $phpmailer->FromName = apply_filters( 'wp_mail_from_name', $from_name ); - - // Set destination address - $phpmailer->AddAddress( $to ); + /** + * Filters the email address to send from. + * + * @since 2.2.0 + * + * @param string $from_email Email address to send from. + */ + $from_email = apply_filters( 'wp_mail_from', $from_email ); + + /** + * Filters the name to associate with the "from" email address. + * + * @since 2.3.0 + * + * @param string $from_name Name associated with the "from" email address. + */ + $from_name = apply_filters( 'wp_mail_from_name', $from_name ); + + $phpmailer->setFrom( $from_email, $from_name, false ); + + // Set destination addresses + if ( !is_array( $to ) ) + $to = explode( ',', $to ); // Set mail's subject and body $phpmailer->Subject = $subject; - $phpmailer->Body = $message; + $phpmailer->Body = $message; + + // Use appropriate methods for handling addresses, rather than treating them as generic headers + $address_headers = compact( 'to', 'cc', 'bcc', 'reply_to' ); + + foreach ( $address_headers as $address_header => $addresses ) { + if ( empty( $addresses ) ) { + continue; + } + + foreach ( (array) $addresses as $address ) { + try { + // Break $recipient into name and address parts if in the format "Foo " + $recipient_name = ''; + + if ( preg_match( '/(.*)<(.+)>/', $address, $matches ) ) { + if ( count( $matches ) == 3 ) { + $recipient_name = $matches[1]; + $address = $matches[2]; + } + } + + switch ( $address_header ) { + case 'to': + $phpmailer->addAddress( $address, $recipient_name ); + break; + case 'cc': + $phpmailer->addCc( $address, $recipient_name ); + break; + case 'bcc': + $phpmailer->addBcc( $address, $recipient_name ); + break; + case 'reply_to': + $phpmailer->addReplyTo( $address, $recipient_name ); + break; + } + } catch ( phpmailerException $e ) { + continue; + } + } + } // Set to use PHP's mail() $phpmailer->IsMail(); // Set Content-Type and charset // If we don't have a content-type from the input headers - if ( !isset( $content_type ) ) { + if ( !isset( $content_type ) ) $content_type = 'text/plain'; - } + /** + * Filters the wp_mail() content type. + * + * @since 2.3.0 + * + * @param string $content_type Default wp_mail() content type. + */ $content_type = apply_filters( 'wp_mail_content_type', $content_type ); - // Set whether it's plaintext or not, depending on $content_type - if ( $content_type == 'text/html' ) { + $phpmailer->ContentType = $content_type; + + // Set whether it's plaintext, depending on $content_type + if ( 'text/html' == $content_type ) $phpmailer->IsHTML( true ); - } else { - $phpmailer->IsHTML( false ); - } // If we don't have a charset from the input headers - if ( !isset( $charset ) ) { + if ( !isset( $charset ) ) $charset = get_bloginfo( 'charset' ); - } // Set the content-type and charset + + /** + * Filters the default wp_mail() charset. + * + * @since 2.3.0 + * + * @param string $charset Default email charset. + */ $phpmailer->CharSet = apply_filters( 'wp_mail_charset', $charset ); // Set custom headers if ( !empty( $headers ) ) { - foreach ( $headers as $name => $content ) { + foreach ( (array) $headers as $name => $content ) { $phpmailer->AddCustomHeader( sprintf( '%1$s: %2$s', $name, $content ) ); } + + if ( false !== stripos( $content_type, 'multipart' ) && ! empty($boundary) ) + $phpmailer->AddCustomHeader( sprintf( "Content-Type: %s;\n\t boundary=\"%s\"", $content_type, $boundary ) ); + } + + if ( !empty( $attachments ) ) { + foreach ( $attachments as $attachment ) { + try { + $phpmailer->AddAttachment($attachment); + } catch ( phpmailerException $e ) { + continue; + } + } } + /** + * Fires after PHPMailer is initialized. + * + * @since 2.2.0 + * + * @param PHPMailer &$phpmailer The PHPMailer instance, passed by reference. + */ do_action_ref_array( 'phpmailer_init', array( &$phpmailer ) ); // Send! - $result = @$phpmailer->Send(); + 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 $result; + return false; + } } endif; -if ( !function_exists('wp_login') ) : -function wp_login($username, $password, $already_md5 = false) { - global $wpdb, $error; - +if ( !function_exists('wp_authenticate') ) : +/** + * Authenticate a user, confirming the login credentials are valid. + * + * @since 2.5.0 + * @since 4.5.0 `$username` now accepts an email address. + * + * @param string $username User's username or email address. + * @param string $password User's password. + * @return WP_User|WP_Error WP_User object if the credentials are valid, + * otherwise WP_Error. + */ +function wp_authenticate($username, $password) { $username = sanitize_user($username); + $password = trim($password); + + /** + * Filters whether a set of user login credentials are valid. + * + * A WP_User object is returned if the credentials authenticate a user. + * WP_Error or null otherwise. + * + * @since 2.8.0 + * @since 4.5.0 `$username` now accepts an email address. + * + * @param null|WP_User|WP_Error $user WP_User if the user is authenticated. + * WP_Error or null otherwise. + * @param string $username Username or email address. + * @param string $password User password + */ + $user = apply_filters( 'authenticate', null, $username, $password ); + + if ( $user == null ) { + // TODO what should the error message be? (Or would these even happen?) + // Only needed if all authentication handlers fail to return anything. + $user = new WP_Error( 'authentication_failed', __( 'ERROR: Invalid username, email address or incorrect password.' ) ); + } + + $ignore_codes = array('empty_username', 'empty_password'); + + if (is_wp_error($user) && !in_array($user->get_error_code(), $ignore_codes) ) { + /** + * Fires after a user login has failed. + * + * @since 2.5.0 + * @since 4.5.0 The value of `$username` can now be an email address. + * + * @param string $username Username or email address. + */ + do_action( 'wp_login_failed', $username ); + } + + return $user; +} +endif; + +if ( !function_exists('wp_logout') ) : +/** + * Log the current user out. + * + * @since 2.5.0 + */ +function wp_logout() { + wp_destroy_current_session(); + wp_clear_auth_cookie(); + + /** + * Fires after a user is logged-out. + * + * @since 1.5.0 + */ + do_action( 'wp_logout' ); +} +endif; - if ( '' == $username ) +if ( !function_exists('wp_validate_auth_cookie') ) : +/** + * Validates authentication cookie. + * + * The checks include making sure that the authentication cookie is set and + * pulling in the contents (if $cookie is not used). + * + * Makes sure the cookie is not expired. Verifies the hash in cookie is what is + * should be and compares the two. + * + * @since 2.5.0 + * + * @global int $login_grace_period + * + * @param string $cookie Optional. If used, will validate contents instead of cookie's + * @param string $scheme Optional. The cookie scheme to use: auth, secure_auth, or logged_in + * @return false|int False if invalid cookie, User ID if valid. + */ +function wp_validate_auth_cookie($cookie = '', $scheme = '') { + if ( ! $cookie_elements = wp_parse_auth_cookie($cookie, $scheme) ) { + /** + * Fires if an authentication cookie is malformed. + * + * @since 2.7.0 + * + * @param string $cookie Malformed auth cookie. + * @param string $scheme Authentication scheme. Values include 'auth', 'secure_auth', + * or 'logged_in'. + */ + do_action( 'auth_cookie_malformed', $cookie, $scheme ); return false; + } + + $scheme = $cookie_elements['scheme']; + $username = $cookie_elements['username']; + $hmac = $cookie_elements['hmac']; + $token = $cookie_elements['token']; + $expired = $expiration = $cookie_elements['expiration']; - if ( '' == $password ) { - $error = __('ERROR: The password field is empty.'); + // Allow a grace period for POST and Ajax requests + 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() ) { + /** + * Fires once an authentication cookie has expired. + * + * @since 2.7.0 + * + * @param array $cookie_elements An array of data for the authentication cookie. + */ + do_action( 'auth_cookie_expired', $cookie_elements ); return false; } - $login = get_userdatabylogin($username); - //$login = $wpdb->get_row("SELECT ID, user_login, user_pass FROM $wpdb->users WHERE user_login = '$username'"); + $user = get_user_by('login', $username); + if ( ! $user ) { + /** + * Fires if a bad username is entered in the user authentication process. + * + * @since 2.7.0 + * + * @param array $cookie_elements An array of data for the authentication cookie. + */ + do_action( 'auth_cookie_bad_username', $cookie_elements ); + return false; + } - if (!$login) { - $error = __('ERROR: Invalid username.'); + $pass_frag = substr($user->user_pass, 8, 4); + + $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 ) ) { + /** + * Fires if a bad authentication cookie hash is encountered. + * + * @since 2.7.0 + * + * @param array $cookie_elements An array of data for the authentication cookie. + */ + do_action( 'auth_cookie_bad_hash', $cookie_elements ); return false; - } else { - // If the password is already_md5, it has been double hashed. - // Otherwise, it is plain text. - if ( ($already_md5 && md5($login->user_pass) == $password) || ($login->user_login == $username && $login->user_pass == md5($password)) ) { - return true; - } else { - $error = __('ERROR: Incorrect password.'); - $pwd = ''; + } + + $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. + * + * @since 2.7.0 + * + * @param array $cookie_elements An array of data for the authentication cookie. + * @param WP_User $user User object. + */ + do_action( 'auth_cookie_valid', $cookie_elements, $user ); + + return $user->ID; +} +endif; + +if ( !function_exists('wp_generate_auth_cookie') ) : +/** + * Generate authentication cookie contents. + * + * @since 2.5.0 + * + * @param int $user_id User ID + * @param int $expiration The time the cookie expires as a UNIX timestamp. + * @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', $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 . '|' . $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, $user->user_login . '|' . $expiration . '|' . $token, $key ); + + $cookie = $user->user_login . '|' . $expiration . '|' . $token . '|' . $hash; + + /** + * Filters the authentication cookie. + * + * @since 2.5.0 + * + * @param string $cookie Authentication cookie. + * @param int $user_id User ID. + * @param int $expiration The time the cookie expires as a UNIX timestamp. + * @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, $token ); +} +endif; + +if ( !function_exists('wp_parse_auth_cookie') ) : +/** + * Parse a cookie into its components + * + * @since 2.7.0 + * + * @param string $cookie + * @param string $scheme Optional. The cookie scheme to use: auth, secure_auth, or logged_in + * @return array|false Authentication cookie components + */ +function wp_parse_auth_cookie($cookie = '', $scheme = '') { + if ( empty($cookie) ) { + switch ($scheme){ + case 'auth': + $cookie_name = AUTH_COOKIE; + break; + case 'secure_auth': + $cookie_name = SECURE_AUTH_COOKIE; + break; + case "logged_in": + $cookie_name = LOGGED_IN_COOKIE; + break; + default: + if ( is_ssl() ) { + $cookie_name = SECURE_AUTH_COOKIE; + $scheme = 'secure_auth'; + } else { + $cookie_name = AUTH_COOKIE; + $scheme = 'auth'; + } + } + + if ( empty($_COOKIE[$cookie_name]) ) return false; - } + $cookie = $_COOKIE[$cookie_name]; + } + + $cookie_elements = explode('|', $cookie); + if ( count( $cookie_elements ) !== 4 ) { + return false; } + + list( $username, $expiration, $token, $hmac ) = $cookie_elements; + + return compact( 'username', 'expiration', 'token', 'hmac', 'scheme' ); +} +endif; + +if ( !function_exists('wp_set_auth_cookie') ) : +/** + * Log in a user by setting authentication cookies. + * + * The $remember parameter increases the time that the cookie will be kept. The + * default the cookie is kept without remembering is two days. When $remember is + * set, the cookies will be kept for 14 days or two weeks. + * + * @since 2.5.0 + * @since 4.3.0 Added the `$token` parameter. + * + * @param int $user_id User ID + * @param bool $remember Whether to remember the user + * @param 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 = '', $token = '' ) { + if ( $remember ) { + /** + * Filters the duration of the authentication cookie expiration period. + * + * @since 2.8.0 + * + * @param int $length Duration of the expiration period in seconds. + * @param int $user_id User ID. + * @param bool $remember Whether to remember the user login. Default false. + */ + $expiration = time() + apply_filters( 'auth_cookie_expiration', 14 * DAY_IN_SECONDS, $user_id, $remember ); + + /* + * Ensure the browser will continue to send the cookie after the expiration time is reached. + * Needed for the login grace period in wp_validate_auth_cookie(). + */ + $expire = $expiration + ( 12 * HOUR_IN_SECONDS ); + } else { + /** This filter is documented in wp-includes/pluggable.php */ + $expiration = time() + apply_filters( 'auth_cookie_expiration', 2 * DAY_IN_SECONDS, $user_id, $remember ); + $expire = 0; + } + + if ( '' === $secure ) { + $secure = is_ssl(); + } + + // Front-end 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 ); + + /** + * Filters whether the connection is secure. + * + * @since 3.1.0 + * + * @param bool $secure Whether the connection is secure. + * @param int $user_id User ID. + */ + $secure = apply_filters( 'secure_auth_cookie', $secure, $user_id ); + + /** + * Filters whether to use a secure cookie when logged-in. + * + * @since 3.1.0 + * + * @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', $secure_logged_in_cookie, $user_id, $secure ); + + if ( $secure ) { + $auth_cookie_name = SECURE_AUTH_COOKIE; + $scheme = 'secure_auth'; + } else { + $auth_cookie_name = AUTH_COOKIE; + $scheme = 'auth'; + } + + 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. + * + * @since 2.5.0 + * + * @param string $auth_cookie Authentication cookie. + * @param int $expire The time the login grace period expires as a UNIX timestamp. + * Default is 12 hours past the cookie's expiration time. + * @param int $expiration The time when the authentication cookie expires as a UNIX timestamp. + * Default is 14 days from now. + * @param int $user_id User ID. + * @param string $scheme Authentication scheme. Values include 'auth', 'secure_auth', or 'logged_in'. + */ + do_action( 'set_auth_cookie', $auth_cookie, $expire, $expiration, $user_id, $scheme ); + + /** + * Fires immediately before the logged-in authentication cookie is set. + * + * @since 2.6.0 + * + * @param string $logged_in_cookie The logged-in cookie. + * @param int $expire The time the login grace period expires as a UNIX timestamp. + * Default is 12 hours past the cookie's expiration time. + * @param int $expiration The time when the logged-in authentication cookie expires as a UNIX timestamp. + * Default is 14 days from now. + * @param int $user_id User ID. + * @param string $scheme Authentication scheme. Default 'logged_in'. + */ + do_action( 'set_logged_in_cookie', $logged_in_cookie, $expire, $expiration, $user_id, 'logged_in' ); + + setcookie($auth_cookie_name, $auth_cookie, $expire, PLUGINS_COOKIE_PATH, COOKIE_DOMAIN, $secure, true); + setcookie($auth_cookie_name, $auth_cookie, $expire, ADMIN_COOKIE_PATH, COOKIE_DOMAIN, $secure, true); + setcookie(LOGGED_IN_COOKIE, $logged_in_cookie, $expire, COOKIEPATH, COOKIE_DOMAIN, $secure_logged_in_cookie, true); + if ( COOKIEPATH != SITECOOKIEPATH ) + setcookie(LOGGED_IN_COOKIE, $logged_in_cookie, $expire, SITECOOKIEPATH, COOKIE_DOMAIN, $secure_logged_in_cookie, true); +} +endif; + +if ( !function_exists('wp_clear_auth_cookie') ) : +/** + * Removes all of the cookies associated with authentication. + * + * @since 2.5.0 + */ +function wp_clear_auth_cookie() { + /** + * Fires just before the authentication cookies are cleared. + * + * @since 2.7.0 + */ + do_action( 'clear_auth_cookie' ); + + setcookie( AUTH_COOKIE, ' ', time() - YEAR_IN_SECONDS, ADMIN_COOKIE_PATH, COOKIE_DOMAIN ); + setcookie( SECURE_AUTH_COOKIE, ' ', time() - YEAR_IN_SECONDS, ADMIN_COOKIE_PATH, COOKIE_DOMAIN ); + setcookie( AUTH_COOKIE, ' ', time() - YEAR_IN_SECONDS, PLUGINS_COOKIE_PATH, COOKIE_DOMAIN ); + setcookie( SECURE_AUTH_COOKIE, ' ', time() - YEAR_IN_SECONDS, PLUGINS_COOKIE_PATH, COOKIE_DOMAIN ); + setcookie( LOGGED_IN_COOKIE, ' ', time() - YEAR_IN_SECONDS, COOKIEPATH, COOKIE_DOMAIN ); + setcookie( LOGGED_IN_COOKIE, ' ', time() - YEAR_IN_SECONDS, SITECOOKIEPATH, COOKIE_DOMAIN ); + + // Old cookies + setcookie( AUTH_COOKIE, ' ', time() - YEAR_IN_SECONDS, COOKIEPATH, COOKIE_DOMAIN ); + setcookie( AUTH_COOKIE, ' ', time() - YEAR_IN_SECONDS, SITECOOKIEPATH, COOKIE_DOMAIN ); + setcookie( SECURE_AUTH_COOKIE, ' ', time() - YEAR_IN_SECONDS, COOKIEPATH, COOKIE_DOMAIN ); + setcookie( SECURE_AUTH_COOKIE, ' ', time() - YEAR_IN_SECONDS, SITECOOKIEPATH, COOKIE_DOMAIN ); + + // Even older cookies + setcookie( USER_COOKIE, ' ', time() - YEAR_IN_SECONDS, COOKIEPATH, COOKIE_DOMAIN ); + setcookie( PASS_COOKIE, ' ', time() - YEAR_IN_SECONDS, COOKIEPATH, COOKIE_DOMAIN ); + setcookie( USER_COOKIE, ' ', time() - YEAR_IN_SECONDS, SITECOOKIEPATH, COOKIE_DOMAIN ); + setcookie( PASS_COOKIE, ' ', time() - YEAR_IN_SECONDS, SITECOOKIEPATH, COOKIE_DOMAIN ); } endif; if ( !function_exists('is_user_logged_in') ) : +/** + * Checks if the current visitor is a logged in user. + * + * @since 2.0.0 + * + * @return bool True if user is logged in, false if not logged in. + */ function is_user_logged_in() { $user = wp_get_current_user(); - if ( $user->id == 0 ) - return false; - - return true; + return $user->exists(); } endif; if ( !function_exists('auth_redirect') ) : +/** + * Checks if a user is logged in, if not it redirects them to the login page. + * + * @since 1.5.0 + */ function auth_redirect() { // Checks if a user is logged in, if not redirects them to the login page - if ( (!empty($_COOKIE[USER_COOKIE]) && - !wp_login($_COOKIE[USER_COOKIE], $_COOKIE[PASS_COOKIE], true)) || - (empty($_COOKIE[USER_COOKIE])) ) { - nocache_headers(); - wp_redirect(get_option('siteurl') . '/wp-login.php?redirect_to=' . urlencode($_SERVER['REQUEST_URI'])); - exit(); + $secure = ( is_ssl() || force_ssl_admin() ); + + /** + * Filters whether to use a secure authentication redirect. + * + * @since 3.1.0 + * + * @param bool $secure Whether to use a secure authentication redirect. Default false. + */ + $secure = apply_filters( 'secure_auth_redirect', $secure ); + + // If https is required and request is http, redirect + if ( $secure && !is_ssl() && false !== strpos($_SERVER['REQUEST_URI'], 'wp-admin') ) { + if ( 0 === strpos( $_SERVER['REQUEST_URI'], 'http' ) ) { + wp_redirect( set_url_scheme( $_SERVER['REQUEST_URI'], 'https' ) ); + exit(); + } else { + wp_redirect( 'https://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'] ); + exit(); + } + } + + /** + * Filters the authentication redirect scheme. + * + * @since 2.9.0 + * + * @param string $scheme Authentication redirect scheme. Default empty. + */ + $scheme = apply_filters( 'auth_redirect_scheme', '' ); + + if ( $user_id = wp_validate_auth_cookie( '', $scheme) ) { + /** + * Fires before the authentication redirect. + * + * @since 2.8.0 + * + * @param int $user_id User ID. + */ + do_action( 'auth_redirect', $user_id ); + + // If the user wants ssl but the session is not ssl, redirect. + if ( !$secure && get_user_option('use_ssl', $user_id) && false !== strpos($_SERVER['REQUEST_URI'], 'wp-admin') ) { + if ( 0 === strpos( $_SERVER['REQUEST_URI'], 'http' ) ) { + wp_redirect( set_url_scheme( $_SERVER['REQUEST_URI'], 'https' ) ); + exit(); + } else { + wp_redirect( 'https://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'] ); + exit(); + } + } + + return; // The cookie is good so we're done } + + // The cookie is no good so force login + nocache_headers(); + + $redirect = ( strpos( $_SERVER['REQUEST_URI'], '/options.php' ) && wp_get_referer() ) ? wp_get_referer() : set_url_scheme( 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'] ); + + $login_url = wp_login_url($redirect, true); + + wp_redirect($login_url); + exit(); } endif; if ( !function_exists('check_admin_referer') ) : -function check_admin_referer($action = -1) { - $adminurl = strtolower(get_option('siteurl')).'/wp-admin'; +/** + * Makes sure that a user was referred from another admin page. + * + * To avoid security exploits. + * + * @since 1.2.0 + * + * @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' ) { + if ( -1 == $action ) + _doing_it_wrong( __FUNCTION__, __( 'You should specify a nonce action to be verified by using the first parameter.' ), '3.2.0' ); + + $adminurl = strtolower(admin_url()); $referer = strtolower(wp_get_referer()); - if ( !wp_verify_nonce($_REQUEST['_wpnonce'], $action) && - !(-1 == $action && strpos($referer, $adminurl) !== false)) { - wp_nonce_ays($action); + $result = isset($_REQUEST[$query_arg]) ? wp_verify_nonce($_REQUEST[$query_arg], $action) : false; + + /** + * Fires once the admin request has been validated or not. + * + * @since 1.5.1 + * + * @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(); } - do_action('check_admin_referer', $action); -}endif; -if ( !function_exists('check_ajax_referer') ) : -function check_ajax_referer() { - $current_name = ''; - if ( ( $current = wp_get_current_user() ) && $current->ID ) - $current_name = $current->data->user_login; - if ( !$current_name ) - die('-1'); + return $result; +} +endif; - $cookie = explode('; ', urldecode(empty($_POST['cookie']) ? $_GET['cookie'] : $_POST['cookie'])); // AJAX scripts must pass cookie=document.cookie - foreach ( $cookie as $tasty ) { - if ( false !== strpos($tasty, USER_COOKIE) ) - $user = substr(strstr($tasty, '='), 1); - if ( false !== strpos($tasty, PASS_COOKIE) ) - $pass = substr(strstr($tasty, '='), 1); +if ( !function_exists('check_ajax_referer') ) : +/** + * Verifies the Ajax request to prevent processing requests external of the blog. + * + * @since 2.0.3 + * + * @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 = ''; + + if ( $query_arg && isset( $_REQUEST[ $query_arg ] ) ) + $nonce = $_REQUEST[ $query_arg ]; + elseif ( isset( $_REQUEST['_ajax_nonce'] ) ) + $nonce = $_REQUEST['_ajax_nonce']; + elseif ( isset( $_REQUEST['_wpnonce'] ) ) + $nonce = $_REQUEST['_wpnonce']; + + $result = wp_verify_nonce( $nonce, $action ); + + /** + * Fires once the Ajax request has been validated or not. + * + * @since 2.1.0 + * + * @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' ); + } } - if ( $current_name != $user || !wp_login( $user, $pass, true ) ) - die('-1'); - do_action('check_ajax_referer'); + return $result; } endif; -// Cookie safe redirect. Works around IIS Set-Cookie bug. -// http://support.microsoft.com/kb/q176113/ if ( !function_exists('wp_redirect') ) : +/** + * Redirects to another page. + * + * Note: wp_redirect() does not exit automatically, and should almost always be + * followed by a call to `exit;`: + * + * wp_redirect( $url ); + * exit; + * + * Exiting can also be selectively manipulated by using wp_redirect() as a conditional + * in conjunction with the {@see 'wp_redirect'} and {@see 'wp_redirect_location'} hooks: + * + * if ( wp_redirect( $url ) { + * exit; + * } + * + * @since 1.5.1 + * + * @global bool $is_IIS + * + * @param string $location The path to redirect to. + * @param int $status Status code to use. + * @return bool False if $location is not provided, true otherwise. + */ function wp_redirect($location, $status = 302) { global $is_IIS; - $location = apply_filters('wp_redirect', $location, $status); - - if ( !$location ) // allows the wp_redirect filter to cancel a redirect + /** + * Filters the redirect location. + * + * @since 2.1.0 + * + * @param string $location The path to redirect to. + * @param int $status Status code to use. + */ + $location = apply_filters( 'wp_redirect', $location, $status ); + + /** + * Filters the redirect status code. + * + * @since 2.3.0 + * + * @param int $status Status code to use. + * @param string $location The path to redirect to. + */ + $status = apply_filters( 'wp_redirect_status', $status, $location ); + + if ( ! $location ) return false; $location = wp_sanitize_redirect($location); - if ( $is_IIS ) { - header("Refresh: 0;url=$location"); - } else { - if ( php_sapi_name() != 'cgi-fcgi' ) - status_header($status); // This causes problems on IIS and some FastCGI setups - header("Location: $location"); - } + if ( !$is_IIS && PHP_SAPI != 'cgi-fcgi' ) + status_header($status); // This causes problems on IIS and some FastCGI setups + + header("Location: $location", true, $status); + + return true; } endif; if ( !function_exists('wp_sanitize_redirect') ) : /** - * sanitizes a URL for use in a redirect - * @return string redirect-sanitized URL + * Sanitizes a URL for use in a redirect. + * + * @since 2.3.0 + * + * @param string $location The path to redirect to. + * @return string Redirect-sanitized URL. **/ function wp_sanitize_redirect($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'); - $found = true; - while($found) { - $found = false; - foreach($strip as $val) { - while(strpos($location, $val) !== false) { - $found = true; - $location = str_replace($val, '', $location); - } - } - } - return $location; + $strip = array('%0d', '%0a', '%0D', '%0A'); + return _deep_replace( $strip, $location ); +} + +/** + * URL encode UTF-8 characters in a URL. + * + * @ignore + * @since 4.2.0 + * @access private + * + * @see wp_sanitize_redirect() + * + * @param array $matches RegEx matches against the redirect location. + * @return string URL-encoded version of the first RegEx match. + */ +function _wp_sanitize_utf8_in_redirect( $matches ) { + return urlencode( $matches[0] ); } endif; if ( !function_exists('wp_safe_redirect') ) : /** - * performs a safe (local) redirect, using wp_redirect() - * @return void - **/ + * Performs a safe (local) redirect, using wp_redirect(). + * + * Checks whether the $location is using an allowed host, if it has an absolute + * 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 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 + * + * @param string $location The path to redirect to. + * @param int $status Status code to use. + */ function wp_safe_redirect($location, $status = 302) { // Need to look at the URL the way it will end up in wp_redirect() $location = wp_sanitize_redirect($location); + /** + * Filters 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); +} +endif; + +if ( !function_exists('wp_validate_redirect') ) : +/** + * Validates a URL for use in a redirect. + * + * Checks whether the $location is using an allowed host, if it has an absolute + * 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 $default supplied + * + * @since 2.8.1 + * + * @param string $location The redirect to validate + * @param string $default The value to return if $location is not allowed + * @return string redirect-sanitized URL + **/ +function wp_validate_redirect($location, $default = '') { + $location = trim( $location ); // browsers will assume 'http' is your protocol, and will obey a redirect to a URL starting with '//' if ( substr($location, 0, 2) == '//' ) $location = 'http:' . $location; - $lp = parse_url($location); - $wpp = parse_url(get_option('home')); + // 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; - $allowed_hosts = (array) apply_filters('allowed_redirect_hosts', array($wpp['host']), $lp['host']); + // @-operator is used to prevent possible warnings in PHP < 5.3.3. + $lp = @parse_url($test); - if ( isset($lp['host']) && ( !in_array($lp['host'], $allowed_hosts) && $lp['host'] != strtolower($wpp['host'])) ) - $location = get_option('siteurl') . '/wp-admin/'; + // Give up if malformed URL + if ( false === $lp ) + return $default; - wp_redirect($location, $status); -} -endif; + // Allow only http and https schemes. No data:, etc. + if ( isset($lp['scheme']) && !('http' == $lp['scheme'] || 'https' == $lp['scheme']) ) + return $default; -if ( !function_exists('wp_get_cookie_login') ): -function wp_get_cookie_login() { - if ( empty($_COOKIE[USER_COOKIE]) || empty($_COOKIE[PASS_COOKIE]) ) - return false; + // 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; + } - return array('login' => $_COOKIE[USER_COOKIE], 'password' => $_COOKIE[PASS_COOKIE]); -} + // 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; + } + } -endif; + $wpp = parse_url(home_url()); -if ( !function_exists('wp_setcookie') ) : -function wp_setcookie($username, $password, $already_md5 = false, $home = '', $siteurl = '', $remember = false) { - if ( !$already_md5 ) - $password = md5( md5($password) ); // Double hash the password in the cookie. + /** + * Filters the whitelist of hosts to redirect to. + * + * @since 2.3.0 + * + * @param array $hosts An array of allowed hosts. + * @param bool|string $host The parsed host; empty if not isset. + */ + $allowed_hosts = (array) apply_filters( 'allowed_redirect_hosts', array($wpp['host']), isset($lp['host']) ? $lp['host'] : '' ); - if ( empty($home) ) - $cookiepath = COOKIEPATH; - else - $cookiepath = preg_replace('|https?://[^/]+|i', '', $home . '/' ); + if ( isset($lp['host']) && ( !in_array($lp['host'], $allowed_hosts) && $lp['host'] != strtolower($wpp['host'])) ) + $location = $default; - if ( empty($siteurl) ) { - $sitecookiepath = SITECOOKIEPATH; - $cookiehash = COOKIEHASH; - } else { - $sitecookiepath = preg_replace('|https?://[^/]+|i', '', $siteurl . '/' ); - $cookiehash = md5($siteurl); + return $location; +} +endif; + +if ( ! function_exists('wp_notify_postauthor') ) : +/** + * Notify an author (and/or others) of a comment/trackback/pingback on a post. + * + * @since 1.0.0 + * + * @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 ) { + if ( null !== $deprecated ) { + _deprecated_argument( __FUNCTION__, '3.8.0' ); } - if ( $remember ) - $expire = time() + 31536000; - else - $expire = 0; + $comment = get_comment( $comment_id ); + if ( empty( $comment ) || empty( $comment->comment_post_ID ) ) + return false; - setcookie(USER_COOKIE, $username, $expire, $cookiepath, COOKIE_DOMAIN); - setcookie(PASS_COOKIE, $password, $expire, $cookiepath, COOKIE_DOMAIN); + $post = get_post( $comment->comment_post_ID ); + $author = get_userdata( $post->post_author ); - if ( $cookiepath != $sitecookiepath ) { - setcookie(USER_COOKIE, $username, $expire, $sitecookiepath, COOKIE_DOMAIN); - setcookie(PASS_COOKIE, $password, $expire, $sitecookiepath, COOKIE_DOMAIN); + // Who to notify? By default, just the post author, but others can be added. + $emails = array(); + if ( $author ) { + $emails[] = $author->user_email; } -} -endif; -if ( !function_exists('wp_clearcookie') ) : -function wp_clearcookie() { - setcookie(USER_COOKIE, ' ', time() - 31536000, COOKIEPATH, COOKIE_DOMAIN); - setcookie(PASS_COOKIE, ' ', time() - 31536000, COOKIEPATH, COOKIE_DOMAIN); - setcookie(USER_COOKIE, ' ', time() - 31536000, SITECOOKIEPATH, COOKIE_DOMAIN); - setcookie(PASS_COOKIE, ' ', time() - 31536000, SITECOOKIEPATH, COOKIE_DOMAIN); -} -endif; + /** + * Filters the list of email addresses to receive a comment notification. + * + * By default, only post authors are notified of comments. This filter allows + * others to be added. + * + * @since 3.7.0 + * + * @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->comment_ID ); + $emails = array_filter( $emails ); + + // If there are no addresses to send the comment to, bail. + if ( ! count( $emails ) ) { + return false; + } -if ( ! function_exists('wp_notify_postauthor') ) : -function wp_notify_postauthor($comment_id, $comment_type='') { - global $wpdb; + // Facilitate unsetting below without knowing the keys. + $emails = array_flip( $emails ); + + /** + * Filters whether to notify comment authors of their comments on their own posts. + * + * By default, comment authors aren't notified of their comments on their own + * posts. This filter allows you to override that. + * + * @since 3.8.0 + * + * @param bool $notify Whether to notify the post author of their own comment. + * Default false. + * @param int $comment_id The 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 ) { + unset( $emails[ $author->user_email ] ); + } - $comment = get_comment($comment_id); - $post = get_post($comment->comment_post_ID); - $user = get_userdata( $post->post_author ); + // The author moderated a comment on their own post + if ( $author && ! $notify_author && $post->post_author == get_current_user_id() ) { + unset( $emails[ $author->user_email ] ); + } - if ('' == $user->user_email) return false; // If there's no email to send the comment to + // The post author is no longer a member of the blog + if ( $author && ! $notify_author && ! user_can( $post->post_author, 'read_post', $post->ID ) ) { + unset( $emails[ $author->user_email ] ); + } + + // If there's no email to send the comment to, bail, otherwise flip array back around for use below + if ( ! count( $emails ) ) { + return false; + } else { + $emails = array_flip( $emails ); + } $comment_author_domain = @gethostbyaddr($comment->comment_author_IP); - $blogname = get_option('blogname'); - - if ( empty( $comment_type ) ) $comment_type = 'comment'; - - if ('comment' == $comment_type) { - $notify_message = sprintf( __('New comment on your post #%1$s "%2$s"'), $comment->comment_post_ID, $post->post_title ) . "\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://ws.arin.net/cgi-bin/whois.pl?queryinput=%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"; - $subject = sprintf( __('[%1$s] Comment: "%2$s"'), $blogname, $post->post_title ); - } elseif ('trackback' == $comment_type) { - $notify_message = sprintf( __('New trackback on your post #%1$s "%2$s"'), $comment->comment_post_ID, $post->post_title ) . "\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 .= __('Excerpt: ') . "\r\n" . $comment->comment_content . "\r\n\r\n"; - $notify_message .= __('You can see all trackbacks on this post here: ') . "\r\n"; - $subject = sprintf( __('[%1$s] Trackback: "%2$s"'), $blogname, $post->post_title ); - } elseif ('pingback' == $comment_type) { - $notify_message = sprintf( __('New pingback on your post #%1$s "%2$s"'), $comment->comment_post_ID, $post->post_title ) . "\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 .= __('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"; - $subject = sprintf( __('[%1$s] Pingback: "%2$s"'), $blogname, $post->post_title ); + // 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: 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: 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( __( '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"; - $notify_message .= sprintf( __('Delete it: %s'), get_option('siteurl')."/wp-admin/comment.php?action=cdc&c=$comment_id" ) . "\r\n"; - $notify_message .= sprintf( __('Spam it: %s'), get_option('siteurl')."/wp-admin/comment.php?action=cdc&dt=spam&c=$comment_id" ) . "\r\n"; + $notify_message .= sprintf( __('Permalink: %s'), get_comment_link( $comment ) ) . "\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}#wpbody-content" ) ) . "\r\n"; + } else { + $notify_message .= sprintf( __( 'Delete it: %s' ), admin_url( "comment.php?action=delete&c={$comment->comment_ID}#wpbody-content" ) ) . "\r\n"; + } + $notify_message .= sprintf( __( 'Spam it: %s' ), admin_url( "comment.php?action=spam&c={$comment->comment_ID}#wpbody-content" ) ) . "\r\n"; + } $wp_email = 'wordpress@' . preg_replace('#^www\.#', '', strtolower($_SERVER['SERVER_NAME'])); @@ -558,129 +1484,971 @@ function wp_notify_postauthor($comment_id, $comment_type='') { if ( isset($reply_to) ) $message_headers .= $reply_to . "\n"; - $notify_message = apply_filters('comment_notification_text', $notify_message, $comment_id); - $subject = apply_filters('comment_notification_subject', $subject, $comment_id); - $message_headers = apply_filters('comment_notification_headers', $message_headers, $comment_id); - - @wp_mail($user->user_email, $subject, $notify_message, $message_headers); + /** + * Filters the comment notification email text. + * + * @since 1.5.2 + * + * @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->comment_ID ); + + /** + * Filters the comment notification email subject. + * + * @since 1.5.2 + * + * @param string $subject The comment notification email subject. + * @param int $comment_id Comment ID. + */ + $subject = apply_filters( 'comment_notification_subject', $subject, $comment->comment_ID ); + + /** + * Filters the comment notification email headers. + * + * @since 1.5.2 + * + * @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->comment_ID ); + + foreach ( $emails as $email ) { + @wp_mail( $email, wp_specialchars_decode( $subject ), $notify_message, $message_headers ); + } return true; } endif; -/* wp_notify_moderator - notifies the moderator of the blog (usually the admin) - about a new comment that waits for approval - always returns true - */ if ( !function_exists('wp_notify_moderator') ) : +/** + * Notifies the moderator of the site about a new comment that is awaiting approval. + * + * @since 1.0.0 + * + * @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 $comment_id Comment ID. + * @return true Always returns true. + */ function wp_notify_moderator($comment_id) { global $wpdb; - if( get_option( "moderation_notify" ) == 0 ) + $maybe_notify = get_option( 'moderation_notify' ); + + /** + * Filters 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 = $wpdb->get_row("SELECT * FROM $wpdb->comments WHERE comment_ID='$comment_id' LIMIT 1"); - $post = $wpdb->get_row("SELECT * FROM $wpdb->posts WHERE ID='$comment->comment_post_ID' LIMIT 1"); + $comment = get_comment($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 && 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; + } $comment_author_domain = @gethostbyaddr($comment->comment_author_IP); $comments_waiting = $wpdb->get_var("SELECT count(comment_ID) FROM $wpdb->comments WHERE comment_approved = '0'"); - $notify_message = sprintf( __('A new comment on the post #%1$s "%2$s" is waiting for your approval'), $post->ID, $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://ws.arin.net/cgi-bin/whois.pl?queryinput=%s'), $comment->comment_author_IP ) . "\r\n"; - $notify_message .= __('Comment: ') . "\r\n" . $comment->comment_content . "\r\n\r\n"; - $notify_message .= sprintf( __('Approve it: %s'), get_option('siteurl')."/wp-admin/comment.php?action=mac&c=$comment_id" ) . "\r\n"; - $notify_message .= sprintf( __('Delete it: %s'), get_option('siteurl')."/wp-admin/comment.php?action=cdc&c=$comment_id" ) . "\r\n"; - $notify_message .= sprintf( __('Spam it: %s'), get_option('siteurl')."/wp-admin/comment.php?action=cdc&dt=spam&c=$comment_id" ) . "\r\n"; - $notify_message .= sprintf( __('Currently %s comments are waiting for approval. Please visit the moderation panel:'), $comments_waiting ) . "\r\n"; - $notify_message .= get_option('siteurl') . "/wp-admin/moderation.php\r\n"; - - $subject = sprintf( __('[%1$s] Please moderate: "%2$s"'), get_option('blogname'), $post->post_title ); - $admin_email = get_option('admin_email'); + // 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"; + /* 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"; + /* 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( __( '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; + } - $notify_message = apply_filters('comment_moderation_text', $notify_message, $comment_id); - $subject = apply_filters('comment_moderation_subject', $subject, $comment_id); + $notify_message .= sprintf( __( 'Approve it: %s' ), admin_url( "comment.php?action=approve&c={$comment_id}#wpbody-content" ) ) . "\r\n"; - @wp_mail($admin_email, $subject, $notify_message); + if ( EMPTY_TRASH_DAYS ) + $notify_message .= sprintf( __( 'Trash it: %s' ), admin_url( "comment.php?action=trash&c={$comment_id}#wpbody-content" ) ) . "\r\n"; + else + $notify_message .= sprintf( __( 'Delete it: %s' ), admin_url( "comment.php?action=delete&c={$comment_id}#wpbody-content" ) ) . "\r\n"; + + $notify_message .= sprintf( __( 'Spam it: %s' ), admin_url( "comment.php?action=spam&c={$comment_id}#wpbody-content" ) ) . "\r\n"; + + $notify_message .= sprintf( _n('Currently %s comment is waiting for approval. Please visit the moderation panel:', + 'Currently %s comments are waiting for approval. Please visit the moderation panel:', $comments_waiting), number_format_i18n($comments_waiting) ) . "\r\n"; + $notify_message .= admin_url( "edit-comments.php?comment_status=moderated#wpbody-content" ) . "\r\n"; + + $subject = sprintf( __('[%1$s] Please moderate: "%2$s"'), $blogname, $post->post_title ); + $message_headers = ''; + + /** + * Filters the list of recipients for comment moderation emails. + * + * @since 3.7.0 + * + * @param array $emails List of email addresses to notify for comment moderation. + * @param int $comment_id Comment ID. + */ + $emails = apply_filters( 'comment_moderation_recipients', $emails, $comment_id ); + + /** + * Filters the comment moderation email text. + * + * @since 1.5.2 + * + * @param string $notify_message Text of the comment moderation email. + * @param int $comment_id Comment ID. + */ + $notify_message = apply_filters( 'comment_moderation_text', $notify_message, $comment_id ); + + /** + * Filters the comment moderation email subject. + * + * @since 1.5.2 + * + * @param string $subject Subject of the comment moderation email. + * @param int $comment_id Comment ID. + */ + $subject = apply_filters( 'comment_moderation_subject', $subject, $comment_id ); + + /** + * Filters the comment moderation email headers. + * + * @since 2.8.0 + * + * @param string $message_headers Headers for the comment moderation email. + * @param int $comment_id Comment ID. + */ + $message_headers = apply_filters( 'comment_moderation_headers', $message_headers, $comment_id ); + + foreach ( $emails as $email ) { + @wp_mail( $email, wp_specialchars_decode( $subject ), $notify_message, $message_headers ); + } return true; } endif; +if ( !function_exists('wp_password_change_notification') ) : +/** + * Notify the blog admin of a user changing password, normally via email. + * + * @since 2.7.0 + * + * @param WP_User $user User object. + */ +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' ) ) ) { + /* translators: %s: user name */ + $message = sprintf( __( 'Password changed for user: %s' ), $user->user_login ) . "\r\n"; + // 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); + /* translators: %s: site title */ + wp_mail( get_option( 'admin_email' ), sprintf( __( '[%s] Password Changed' ), $blogname ), $message ); + } +} +endif; + if ( !function_exists('wp_new_user_notification') ) : -function wp_new_user_notification($user_id, $plaintext_pass = '') { - $user = new WP_User($user_id); +/** + * Email login credentials to a newly-registered user. + * + * 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. + * @since 4.6.0 The `$notify` parameter accepts 'user' for sending notification only to the user created. + * + * @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 null $deprecated Not used (argument deprecated). + * @param string $notify Optional. Type of notification that should happen. Accepts 'admin' or an empty + * string (admin only), 'user', or 'both' (admin and user). Default empty. + */ +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 ); - $user_login = stripslashes($user->user_login); - $user_email = stripslashes($user->user_email); + // 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); - $message = sprintf(__('New user registration on your blog %s:'), get_option('blogname')) . "\r\n\r\n"; - $message .= sprintf(__('Username: %s'), $user_login) . "\r\n\r\n"; - $message .= sprintf(__('E-mail: %s'), $user_email) . "\r\n"; + if ( 'user' !== $notify ) { + $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( __( 'Email: %s' ), $user->user_email ) . "\r\n"; - @wp_mail(get_option('admin_email'), sprintf(__('[%s] New User Registration'), get_option('blogname')), $message); + @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; + } + + // 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 ) ); - $message = sprintf(__('Username: %s'), $user_login) . "\r\n"; - $message .= sprintf(__('Password: %s'), $plaintext_pass) . "\r\n"; - $message .= get_option('siteurl') . "/wp-login.php\r\n"; + $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($user->user_login), 'login') . ">\r\n\r\n"; - wp_mail($user_email, sprintf(__('[%s] Your username and password'), get_option('blogname')), $message); + $message .= wp_login_url() . "\r\n"; + wp_mail($user->user_email, sprintf(__('[%s] Your username and password info'), $blogname), $message); +} +endif; + +if ( !function_exists('wp_nonce_tick') ) : +/** + * Get the time-dependent variable for nonce creation. + * + * A nonce has a lifespan of two ticks. Nonces in their second tick may be + * updated, e.g. by autosave. + * + * @since 2.5.0 + * + * @return float Float value rounded up to the next highest integer. + */ +function wp_nonce_tick() { + /** + * Filters the lifespan of nonces in seconds. + * + * @since 2.5.0 + * + * @param int $lifespan Lifespan of nonces in seconds. Default 86,400 seconds, or one day. + */ + $nonce_life = apply_filters( 'nonce_life', DAY_IN_SECONDS ); + + return ceil(time() / ( $nonce_life / 2 )); } endif; if ( !function_exists('wp_verify_nonce') ) : -function wp_verify_nonce($nonce, $action = -1) { +/** + * Verify that correct nonce was used with time limit. + * + * The user is given an amount of time to use the token, so therefore, since the + * UID and $action remain the same, the independent variable is the time. + * + * @since 2.0.3 + * + * @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 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 ) { + $nonce = (string) $nonce; $user = wp_get_current_user(); - $uid = (int) $user->id; + $uid = (int) $user->ID; + if ( ! $uid ) { + /** + * Filters whether the user who generated the nonce is logged out. + * + * @since 3.5.0 + * + * @param int $uid ID of the nonce-owning user. + * @param string $action The nonce action. + */ + $uid = apply_filters( 'nonce_user_logged_out', $uid, $action ); + } - $i = ceil(time() / 43200); + if ( empty( $nonce ) ) { + return false; + } - //Allow for expanding range, but only do one check if we can - if( substr(wp_hash($i . $action . $uid), -12, 10) == $nonce || substr(wp_hash(($i - 1) . $action . $uid), -12, 10) == $nonce ) - return true; + $token = wp_get_session_token(); + $i = wp_nonce_tick(); + + // Nonce generated 0-12 hours ago + $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 . '|' . $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; } endif; if ( !function_exists('wp_create_nonce') ) : +/** + * 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 $action Scalar value to add context to the nonce. + * @return string The token. + */ function wp_create_nonce($action = -1) { $user = wp_get_current_user(); - $uid = (int) $user->id; + $uid = (int) $user->ID; + if ( ! $uid ) { + /** This filter is documented in wp-includes/pluggable.php */ + $uid = apply_filters( 'nonce_user_logged_out', $uid, $action ); + } - $i = ceil(time() / 43200); + $token = wp_get_session_token(); + $i = wp_nonce_tick(); - return substr(wp_hash($i . $action . $uid), -12, 10); + return substr( wp_hash( $i . '|' . $action . '|' . $uid . '|' . $token, 'nonce' ), -12, 10 ); } endif; if ( !function_exists('wp_salt') ) : -function wp_salt() { - $salt = get_option('secret'); - if ( empty($salt) ) - $salt = DB_PASSWORD . DB_USER . DB_NAME . DB_HOST . ABSPATH; +/** + * Get salt to add to hashes. + * + * Salts are created using secret keys. Secret keys are located in two places: + * in the database and in the wp-config.php file. The secret key in the database + * is randomly generated and will be appended to the secret keys in wp-config.php. + * + * The secret keys in wp-config.php should be updated to strong, random keys to maximize + * security. Below is an example of how the secret key constants are defined. + * Do not paste this example directly into wp-config.php. Instead, have a + * {@link https://api.wordpress.org/secret-key/1.1/salt/ secret key created} just + * for you. + * + * define('AUTH_KEY', ' XakmM%G4Yt>f`z]MON'); + * define('SECURE_AUTH_KEY', 'LzJ}op]mr|6+![P}Ak:uNdJCJZd>(Hx.-Mh#Tz)pCIU#uGEnfFz|f ;;eU%/U^O~'); + * define('LOGGED_IN_KEY', '|i|Ux`9z7X>QYR0Z_XnZ@|'); + * define('AUTH_SALT', 'eZyT)-Naw]F8CwA*VaW#q*|.)g@o}||wf~@C-YSt}(dh_r6EbI#A,y|nU2{B#JBW'); + * define('SECURE_AUTH_SALT', '!=oLUTXh,QW=H `}`L|9/^4-3 STz},T(w}W*c(u`g~EJBf#8u#R{mUEZrozmm'); + * define('NONCE_SALT', 'h`GXHhD>SLWVfg1(1(N{;.V!MoE(SfbA_ksP@&`+AycHcAV$+?@3q+rxV{%^VyKT'); + * + * Salting passwords helps against tools which has stored hashed values of + * common dictionary strings. The added values makes it harder to crack. + * + * @since 2.5.0 + * + * @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 + */ +function wp_salt( $scheme = 'auth' ) { + static $cached_salts = array(); + if ( isset( $cached_salts[ $scheme ] ) ) { + /** + * Filters the WordPress salt. + * + * @since 2.5.0 + * + * @param string $cached_salt Cached salt for the given scheme. + * @param string $scheme Authentication scheme. Values include 'auth', + * 'secure_auth', 'logged_in', and 'nonce'. + */ + return apply_filters( 'salt', $cached_salts[ $scheme ], $scheme ); + } + + static $duplicated_keys; + if ( null === $duplicated_keys ) { + $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}" ) ) { + continue; + } + $value = constant( "{$first}_{$second}" ); + $duplicated_keys[ $value ] = isset( $duplicated_keys[ $value ] ); + } + } + } + + $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; + } - return $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 ) ] ) ) { + $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 ( ! $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'] ); + } + } + $values['salt'] = hash_hmac( 'md5', $scheme, $values['key'] ); + } + + $cached_salts[ $scheme ] = $values['key'] . $values['salt']; + + /** This filter is documented in wp-includes/pluggable.php */ + return apply_filters( 'salt', $cached_salts[ $scheme ], $scheme ); } endif; if ( !function_exists('wp_hash') ) : -function wp_hash($data) { - $salt = wp_salt(); +/** + * Get hash of given string. + * + * @since 2.0.3 + * + * @param string $data Plain text to hash + * @param string $scheme Authentication scheme (auth, secure_auth, logged_in, nonce) + * @return string Hash of $data + */ +function wp_hash($data, $scheme = 'auth') { + $salt = wp_salt($scheme); + + return hash_hmac('md5', $data, $salt); +} +endif; + +if ( !function_exists('wp_hash_password') ) : +/** + * Create a hash (encrypt) of a plain text password. + * + * For integration with other applications, this function can be overwritten to + * instead use the other package password checking algorithm. + * + * @since 2.5.0 + * + * @global PasswordHash $wp_hasher PHPass object + * + * @param string $password Plain text user password to hash + * @return string The hash string of the password + */ +function wp_hash_password($password) { + global $wp_hasher; + + if ( empty($wp_hasher) ) { + require_once( ABSPATH . WPINC . '/class-phpass.php'); + // By default, use the portable hash from phpass + $wp_hasher = new PasswordHash(8, true); + } + + return $wp_hasher->HashPassword( trim( $password ) ); +} +endif; + +if ( !function_exists('wp_check_password') ) : +/** + * Checks the plaintext password against the encrypted Password. + * + * Maintains compatibility between old version and the new cookie authentication + * protocol using PHPass library. The $hash parameter is the encrypted password + * and the function compares the plain text password when encrypted similarly + * against the already encrypted password to see if they match. + * + * For integration with other applications, this function can be overwritten to + * instead use the other package password checking algorithm. + * + * @since 2.5.0 + * + * @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|int $user_id Optional. User ID. + * @return bool False, if the $password does not match the hashed password + */ +function wp_check_password($password, $hash, $user_id = '') { + global $wp_hasher; + + // If the hash is still md5... + if ( strlen($hash) <= 32 ) { + $check = hash_equals( $hash, md5( $password ) ); + if ( $check && $user_id ) { + // Rehash using new hash. + wp_set_password($password, $user_id); + $hash = wp_hash_password($password); + } + + /** + * Filters whether the plaintext password matches the encrypted password. + * + * @since 2.5.0 + * + * @param bool $check Whether the passwords match. + * @param string $password The plaintext password. + * @param string $hash The hashed password. + * @param string|int $user_id User ID. Can be empty. + */ + return apply_filters( 'check_password', $check, $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 . WPINC . '/class-phpass.php'); + // By default, use the portable hash from phpass + $wp_hasher = new PasswordHash(8, true); + } + + $check = $wp_hasher->CheckPassword($password, $hash); + + /** This filter is documented in wp-includes/pluggable.php */ + return apply_filters( 'check_password', $check, $password, $hash, $user_id ); +} +endif; + +if ( !function_exists('wp_generate_password') ) : +/** + * Generates a random password drawn from the defined set of characters. + * + * @since 2.5.0 + * + * @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 ) + $chars .= '!@#$%^&*()'; + if ( $extra_special_chars ) + $chars .= '-_ []{}<>~`+=,.;:/?|'; + + $password = ''; + for ( $i = 0; $i < $length; $i++ ) { + $password .= substr($chars, wp_rand(0, strlen($chars) - 1), 1); + } + + /** + * Filters the randomly-generated password. + * + * @since 3.0.0 + * + * @param string $password The generated password. + */ + return apply_filters( 'random_password', $password ); +} +endif; + +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 + * @return int A random number between min and max + */ +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 arguments 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 ) { + if ( defined( 'WP_SETUP_CONFIG' ) ) + static $seed = ''; + else + $seed = get_transient('random_seed'); + $rnd_value = md5( uniqid(microtime() . mt_rand(), true ) . $seed ); + $rnd_value .= sha1($rnd_value); + $rnd_value .= sha1($rnd_value . $seed); + $seed = md5($seed . $rnd_value); + if ( ! defined( 'WP_SETUP_CONFIG' ) && ! defined( 'WP_INSTALLING' ) ) { + set_transient( 'random_seed', $seed ); + } + } + + // Take the first 8 digits for our value + $value = substr($rnd_value, 0, 8); + + // Strip the first eight, leaving the remainder for the next call to wp_rand(). + $rnd_value = substr($rnd_value, 8); + + $value = abs(hexdec($value)); - if ( function_exists('hash_hmac') ) { - return hash_hmac('md5', $data, $salt); + // Reduce the value to be within the min - max range + if ( $max != 0 ) + $value = $min + ( $max - $min + 1 ) * $value / ( $max_random_number + 1 ); + + return abs(intval($value)); +} +endif; + +if ( !function_exists('wp_set_password') ) : +/** + * Updates the user's password with a new encrypted one. + * + * 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 + * + * @global wpdb $wpdb WordPress database abstraction object. + * + * @param string $password The plaintext new user password + * @param int $user_id User ID + */ +function wp_set_password( $password, $user_id ) { + global $wpdb; + + $hash = wp_hash_password( $password ); + $wpdb->update($wpdb->users, array('user_pass' => $hash, 'user_activation_key' => ''), array('ID' => $user_id) ); + + wp_cache_delete($user_id, 'users'); +} +endif; + +if ( !function_exists( 'get_avatar' ) ) : +/** + * Retrieve the avatar `` tag for a user, email address, MD5 hash, comment, or post. + * + * @since 2.5.0 + * @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(); + } + + $args['size'] = (int) $size; + $args['default'] = $default; + $args['alt'] = $alt; + + $args = wp_parse_args( $args, $defaults ); + + if ( empty( $args['height'] ) ) { + $args['height'] = $args['size']; + } + if ( empty( $args['width'] ) ) { + $args['width'] = $args['size']; + } + + if ( is_object( $id_or_email ) && isset( $id_or_email->comment_ID ) ) { + $id_or_email = get_comment( $id_or_email ); + } + + /** + * Filters whether to retrieve the avatar URL early. + * + * Passing a non-null value will effectively short-circuit get_avatar(), passing + * the value through the {@see '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 ( ! 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 ( ! $args['force_display'] && ! get_option( 'show_avatars' ) ) { + return false; + } + + $url2x = get_avatar_url( $id_or_email, array_merge( $args, array( 'size' => $args['size'] * 2 ) ) ); + + $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'], + $args['extra_attr'] + ); + + /** + * Filters the avatar to retrieve. + * + * @since 2.5.0 + * @since 4.2.0 The `$args` parameter was added. + * + * @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, $args['size'], $args['default'], $args['alt'], $args ); +} +endif; + +if ( !function_exists( 'wp_text_diff' ) ) : +/** + * Displays a human readable HTML representation of the difference between two strings. + * + * The Diff is available for getting the changes between versions. The output is + * HTML, so the primary use is for displaying the changes. If the two strings + * are equivalent, then an empty string will be returned. + * + * The arguments supported and can be changed are listed below. + * + * 'title' : Default is an empty string. Titles the diff in a manner compatible + * with the output. + * 'title_left' : Default is an empty string. Change the HTML to the left of the + * title. + * 'title_right' : Default is an empty string. Change the HTML to the right of + * the title. + * + * @since 2.6.0 + * + * @see wp_parse_args() Used to change defaults to user defined settings. + * @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. + * @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', false ) ) + require( ABSPATH . WPINC . '/wp-diff.php' ); + + $left_string = normalize_whitespace($left_string); + $right_string = normalize_whitespace($right_string); + + $left_lines = explode("\n", $left_string); + $right_lines = explode("\n", $right_string); + $text_diff = new Text_Diff($left_lines, $right_lines); + $renderer = new WP_Text_Diff_Renderer_Table( $args ); + $diff = $renderer->render($text_diff); + + if ( !$diff ) + return ''; + + $r = "\n"; + + if ( ! empty( $args[ 'show_split_view' ] ) ) { + $r .= ""; } else { - return md5($data . $salt); + $r .= ""; } + + if ( $args['title'] || $args['title_left'] || $args['title_right'] ) + $r .= ""; + if ( $args['title'] ) + $r .= "\n"; + if ( $args['title_left'] || $args['title_right'] ) { + $r .= "\n"; + $r .= "\t\n"; + $r .= "\t\n"; + $r .= "\n"; + } + if ( $args['title'] || $args['title_left'] || $args['title_right'] ) + $r .= "\n"; + + $r .= "\n$diff\n\n"; + $r .= "
$args[title]
$args[title_left]$args[title_right]
"; + + return $r; } endif; -?>