<?php
/**
 * These functions can be replaced via plugins. If plugins do not redefine these
 * functions, then these will be used instead.
 *
 * @package WordPress
 */

if ( !function_exists('wp_set_current_user') ) :
/**
 * Changes the current user by ID or name.
 *
 * Set $id to null and specify a name if you do not know a user's ID.
 *
 * Some WordPress functionality is based on the current user and not based on
 * the signed in user. Therefore, it opens the ability to edit and perform
 * actions on users who aren't signed in.
 *
 * @since 2.0.3
 * @global WP_User $current_user The current user object which holds the user data.
 *
 * @param int    $id   User ID
 * @param string $name User's username
 * @return WP_User Current user User object
 */
function wp_set_current_user($id, $name = '') {
	global $current_user;

	// If `$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 );

	setup_userdata( $current_user->ID );

	/**
	 * 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() {
	return _wp_get_current_user();
}
endif;

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_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 ( !$userdata )
		return false;

	$user = new WP_User;
	$user->init( $userdata );

	return $user;
}
endif;

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;

	$clean = _get_non_cached_ids( $user_ids, 'users' );

	if ( empty( $clean ) )
		return;

	$list = implode( ',', $clean );

	$users = $wpdb->get_results( "SELECT * FROM $wpdb->users WHERE ID IN ($list)" );

	$ids = array();
	foreach ( $users as $user ) {
		update_user_caches( $user );
		$ids[] = $user->ID;
	}
	update_meta_cache( 'user', $ids );
}
endif;

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 <email@address.com>' 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

	/**
	 * 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'];
	}

	if ( !is_array( $to ) ) {
		$to = explode( ',', $to );
	}

	if ( isset( $atts['subject'] ) ) {
		$subject = $atts['subject'];
	}

	if ( isset( $atts['message'] ) ) {
		$message = $atts['message'];
	}

	if ( isset( $atts['headers'] ) ) {
		$headers = $atts['headers'];
	}

	if ( isset( $atts['attachments'] ) ) {
		$attachments = $atts['attachments'];
	}

	if ( ! is_array( $attachments ) ) {
		$attachments = explode( "\n", str_replace( "\r\n", "\n", $attachments ) );
	}
	global $phpmailer;

	// (Re)create it, if it's gone missing
	if ( ! ( $phpmailer instanceof PHPMailer ) ) {
		require_once ABSPATH . WPINC . '/class-phpmailer.php';
		require_once ABSPATH . WPINC . '/class-smtp.php';
		$phpmailer = new PHPMailer( true );
	}

	// Headers
	$cc = $bcc = $reply_to = array();

	if ( empty( $headers ) ) {
		$headers = array();
	} 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 ( (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    );
				$content = 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->clearAllRecipients();
	$phpmailer->clearAttachments();
	$phpmailer->clearCustomHeaders();
	$phpmailer->clearReplyTos();

	// From email and name
	// If we don't have a name from the input headers
	if ( !isset( $from_name ) )
		$from_name = 'WordPress';

	/* 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'] );
		if ( substr( $sitename, 0, 4 ) == 'www.' ) {
			$sitename = substr( $sitename, 4 );
		}

		$from_email = 'wordpress@' . $sitename;
	}

	/**
	 * 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 );

	try {
		$phpmailer->setFrom( $from_email, $from_name, false );
	} catch ( phpmailerException $e ) {
		$mail_error_data = compact( 'to', 'subject', 'message', 'headers', 'attachments' );
		$mail_error_data['phpmailer_exception_code'] = $e->getCode();

		/** This filter is documented in wp-includes/pluggable.php */
		do_action( 'wp_mail_failed', new WP_Error( 'wp_mail_failed', $e->getMessage(), $mail_error_data ) );

		return false;
	}

	// Set mail's subject and body
	$phpmailer->Subject = $subject;
	$phpmailer->Body    = $message;

	// Set destination addresses, using appropriate methods for handling addresses
	$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 <bar@baz.com>"
				$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 ) )
		$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 );

	$phpmailer->ContentType = $content_type;

	// Set whether it's plaintext, depending on $content_type
	if ( 'text/html' == $content_type )
		$phpmailer->isHTML( true );

	// If we don't have a charset from the input headers
	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 ( (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!
	try {
		return $phpmailer->send();
	} catch ( phpmailerException $e ) {

		$mail_error_data = compact( 'to', 'subject', 'message', 'headers', 'attachments' );
		$mail_error_data['phpmailer_exception_code'] = $e->getCode();

		/**
		 * Fires after a phpmailerException is caught.
		 *
		 * @since 4.4.0
		 *
		 * @param WP_Error $error A WP_Error object with the phpmailerException message, and an array
		 *                        containing the mail recipient, subject, message, headers, and attachments.
		 */
		do_action( 'wp_mail_failed', new WP_Error( 'wp_mail_failed', $e->getMessage(), $mail_error_data ) );

		return false;
	}
}
endif;

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', __( '<strong>ERROR</strong>: 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 ( !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'];

	// Allow a grace period for POST and Ajax requests
	if ( wp_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;
	}

	$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;
	}

	$pass_frag = substr($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;
	}

	$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
 * @since 4.0.0 The `$token` parameter was added.
 *
 * @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
	 * @since 4.0.0 The `$token` parameter was added.
	 *
	 * @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();
	}