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pluggable.php
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1811 lines (1558 loc) · 59.6 KB
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<?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 object $current_user The current user object which holds the user data.
* @uses do_action() Calls 'set_current_user' hook after setting the current user.
*
* @param int $id User ID
* @param string $name User's username
* @return WP_User Current user User object
*/
function wp_set_current_user($id, $name = '') {
global $current_user;
if ( isset($current_user) && ($id == $current_user->ID) )
return $current_user;
$current_user = new WP_User($id, $name);
setup_userdata($current_user->ID);
do_action('set_current_user');
return $current_user;
}
endif;
if ( !function_exists('wp_get_current_user') ) :
/**
* Retrieve the current user object.
*
* @since 2.0.3
*
* @return WP_User Current user WP_User object
*/
function wp_get_current_user() {
global $current_user;
get_currentuserinfo();
return $current_user;
}
endif;
if ( !function_exists('get_currentuserinfo') ) :
/**
* Populate global variables with information about the currently logged in user.
*
* 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 0.71
* @uses $current_user Checks if the current user is set
* @uses wp_validate_auth_cookie() Retrieves current logged in user.
*
* @return bool|null False on XMLRPC Request and invalid auth cookie. Null when current user set
*/
function get_currentuserinfo() {
global $current_user;
if ( defined('XMLRPC_REQUEST') && XMLRPC_REQUEST )
return false;
if ( ! empty($current_user) )
return;
if ( ! $user = wp_validate_auth_cookie() ) {
if ( is_blog_admin() || is_network_admin() || empty($_COOKIE[LOGGED_IN_COOKIE]) || !$user = wp_validate_auth_cookie($_COOKIE[LOGGED_IN_COOKIE], 'logged_in') ) {
wp_set_current_user(0);
return false;
}
}
wp_set_current_user($user);
}
endif;
if ( !function_exists('get_userdata') ) :
/**
* Retrieve user info by user ID.
*
* @since 0.71
*
* @param int $user_id User ID
* @return bool|object False on failure, User DB row object
*/
function get_userdata( $user_id ) {
global $wpdb;
if ( ! is_numeric( $user_id ) )
return false;
$user_id = absint( $user_id );
if ( ! $user_id )
return false;
$user = wp_cache_get( $user_id, 'users' );
if ( $user )
return $user;
if ( ! $user = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $wpdb->users WHERE ID = %d LIMIT 1", $user_id ) ) )
return false;
_fill_user( $user );
return $user;
}
endif;
if ( !function_exists('cache_users') ) :
/**
* Retrieve info for user lists to prevent multiple queries by get_userdata()
*
* @since 3.0.0
*
* @param array $users User ID numbers list
*/
function cache_users( $users ) {
global $wpdb;
$clean = array();
foreach($users as $id) {
$id = (int) $id;
if (wp_cache_get($id, 'users')) {
// seems to be cached already
} else {
$clean[] = $id;
}
}
if ( 0 == count($clean) )
return;
$list = implode(',', $clean);
$results = $wpdb->get_results("SELECT * FROM $wpdb->users WHERE ID IN ($list)");
_fill_many_users($results);
}
endif;
if ( !function_exists('get_user_by') ) :
/**
* Retrieve user info by a given field
*
* @since 2.8.0
*
* @param string $field The field to retrieve the user with. id | slug | email | login
* @param int|string $value A value for $field. A user ID, slug, email address, or login name.
* @return bool|object False on failure, User DB row object
*/
function get_user_by($field, $value) {
global $wpdb;
switch ($field) {
case 'id':
return get_userdata($value);
break;
case 'slug':
$user_id = wp_cache_get($value, 'userslugs');
$field = 'user_nicename';
break;
case 'email':
$user_id = wp_cache_get($value, 'useremail');
$field = 'user_email';
break;
case 'login':
$value = sanitize_user( $value );
$user_id = wp_cache_get($value, 'userlogins');
$field = 'user_login';
break;
default:
return false;
}
if ( false !== $user_id )
return get_userdata($user_id);
if ( !$user = $wpdb->get_row( $wpdb->prepare("SELECT * FROM $wpdb->users WHERE $field = %s", $value) ) )
return false;
_fill_user($user);
return $user;
}
endif;
if ( !function_exists('get_userdatabylogin') ) :
/**
* Retrieve user info by login name.
*
* @since 0.71
*
* @param string $user_login User's username
* @return bool|object False on failure, User DB row object
*/
function get_userdatabylogin($user_login) {
return get_user_by('login', $user_login);
}
endif;
if ( !function_exists('get_user_by_email') ) :
/**
* Retrieve user info by email.
*
* @since 2.5
*
* @param string $email User's email address
* @return bool|object False on failure, User DB row object
*/
function get_user_by_email($email) {
return get_user_by('email', $email);
}
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
* 'wp_mail_content_type' filter.
*
* The default charset is based on the charset used on the blog. The charset can
* be set using the 'wp_mail_charset' filter.
*
* @since 1.2.1
* @uses apply_filters() Calls 'wp_mail' hook on an array of all of the parameters.
* @uses apply_filters() Calls 'wp_mail_from' hook to get the from email address.
* @uses apply_filters() Calls 'wp_mail_from_name' hook to get the from address name.
* @uses apply_filters() Calls 'wp_mail_content_type' hook to get the email content type.
* @uses apply_filters() Calls 'wp_mail_charset' hook to get the email charset
* @uses do_action_ref_array() Calls 'phpmailer_init' hook on the reference to
* phpmailer object.
* @uses 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 = '', $attachments = array() ) {
// Compact the input, apply the filters, and extract them back out
extract( apply_filters( 'wp_mail', compact( 'to', 'subject', 'message', 'headers', 'attachments' ) ) );
if ( !is_array($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' ) ) {
require_once ABSPATH . WPINC . '/class-phpmailer.php';
require_once ABSPATH . WPINC . '/class-smtp.php';
$phpmailer = new PHPMailer( true );
}
// Headers
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();
$cc = array();
$bcc = 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( $name ) ) {
// Mainly for legacy -- process a From: header if it's there
case 'from':
if ( strpos($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_email = trim( $content );
}
break;
case 'content-type':
if ( strpos( $content, ';' ) !== false ) {
list( $type, $charset ) = explode( ';', $content );
$content_type = trim( $type );
if ( false !== stripos( $charset, 'charset=' ) ) {
$charset = trim( str_replace( array( 'charset=', '"' ), '', $charset ) );
} elseif ( false !== stripos( $charset, 'boundary=' ) ) {
$boundary = trim( str_replace( array( 'BOUNDARY=', 'boundary=', '"' ), '', $charset ) );
$charset = '';
}
} else {
$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;
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 ) )
$from_name = 'WordPress';
/* If we don't have an email from the input headers default to wordpress@$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
* http://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;
}
// Plugin authors can override the potentially troublesome default
$phpmailer->From = apply_filters( 'wp_mail_from' , $from_email );
$phpmailer->FromName = apply_filters( 'wp_mail_from_name', $from_name );
// Set destination addresses
if ( !is_array( $to ) )
$to = explode( ',', $to );
foreach ( (array) $to as $recipient ) {
try {
// Break $recipient into name and address parts if in the format "Foo <bar@baz.com>"
$recipient_name = '';
if( preg_match( '/(.+)\s?<(.+)>/', $recipient, $matches ) ) {
if ( count( $matches ) == 3 ) {
$recipient_name = $matches[1];
$recipient = $matches[2];
}
}
$phpmailer->AddAddress( trim( $recipient ), $recipient_name);
} catch ( phpmailerException $e ) {
continue;
}
}
// Set mail's subject and body
$phpmailer->Subject = $subject;
$phpmailer->Body = $message;
// Add any CC and BCC recipients
if ( !empty( $cc ) ) {
foreach ( (array) $cc as $recipient ) {
try {
// Break $recipient into name and address parts if in the format "Foo <bar@baz.com>"
$recipient_name = '';
if( preg_match( '/(.+)\s?<(.+)>/', $recipient, $matches ) ) {
if ( count( $matches ) == 3 ) {
$recipient_name = $matches[1];
$recipient = $matches[2];
}
}
$phpmailer->AddCc( trim($recipient), $recipient_name );
} catch ( phpmailerException $e ) {
continue;
}
}
}
if ( !empty( $bcc ) ) {
foreach ( (array) $bcc as $recipient) {
try {
// Break $recipient into name and address parts if in the format "Foo <bar@baz.com>"
$recipient_name = '';
if( preg_match( '/(.+)\s?<(.+)>/', $recipient, $matches ) ) {
if ( count( $matches ) == 3 ) {
$recipient_name = $matches[1];
$recipient = $matches[2];
}
}
$phpmailer->AddBcc( trim($recipient), $recipient_name );
} 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';
$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
$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 $e ) {
continue;
}
}
}
do_action_ref_array( 'phpmailer_init', array( &$phpmailer ) );
// Send!
try {
$phpmailer->Send();
} catch ( phpmailerException $e ) {
return false;
}
return true;
}
endif;
if ( !function_exists('wp_authenticate') ) :
/**
* Checks a user's login information and logs them in if it checks out.
*
* @since 2.5.0
*
* @param string $username User's username
* @param string $password User's password
* @return WP_Error|WP_User WP_User object if login successful, otherwise WP_Error object.
*/
function wp_authenticate($username, $password) {
$username = sanitize_user($username);
$password = trim($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 or incorrect password.'));
}
$ignore_codes = array('empty_username', 'empty_password');
if (is_wp_error($user) && !in_array($user->get_error_code(), $ignore_codes) ) {
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_clear_auth_cookie();
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
*
* @param string $cookie Optional. If used, will validate contents instead of cookie's
* @param string $scheme Optional. The cookie scheme to use: auth, secure_auth, or logged_in
* @return bool|int False if invalid cookie, User ID if valid.
*/
function wp_validate_auth_cookie($cookie = '', $scheme = '') {
if ( ! $cookie_elements = wp_parse_auth_cookie($cookie, $scheme) ) {
do_action('auth_cookie_malformed', $cookie, $scheme);
return false;
}
extract($cookie_elements, EXTR_OVERWRITE);
$expired = $expiration;
// Allow a grace period for POST and AJAX requests
if ( defined('DOING_AJAX') || 'POST' == $_SERVER['REQUEST_METHOD'] )
$expired += 3600;
// Quick check to see if an honest cookie has expired
if ( $expired < time() ) {
do_action('auth_cookie_expired', $cookie_elements);
return false;
}
$user = get_userdatabylogin($username);
if ( ! $user ) {
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, $scheme);
$hash = hash_hmac('md5', $username . '|' . $expiration, $key);
if ( $hmac != $hash ) {
do_action('auth_cookie_bad_hash', $cookie_elements);
return false;
}
if ( $expiration < time() ) // AJAX/POST grace period set above
$GLOBALS['login_grace_period'] = 1;
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
* @uses apply_filters() Calls 'auth_cookie' hook on $cookie contents, User ID
* and expiration of cookie.
*
* @param int $user_id User ID
* @param int $expiration Cookie expiration in seconds
* @param string $scheme Optional. The cookie scheme to use: auth, secure_auth, or logged_in
* @return string Authentication cookie contents
*/
function wp_generate_auth_cookie($user_id, $expiration, $scheme = 'auth') {
$user = get_userdata($user_id);
$pass_frag = substr($user->user_pass, 8, 4);
$key = wp_hash($user->user_login . $pass_frag . '|' . $expiration, $scheme);
$hash = hash_hmac('md5', $user->user_login . '|' . $expiration, $key);
$cookie = $user->user_login . '|' . $expiration . '|' . $hash;
return apply_filters('auth_cookie', $cookie, $user_id, $expiration, $scheme);
}
endif;
if ( !function_exists('wp_parse_auth_cookie') ) :
/**
* Parse a cookie into its components
*
* @since 2.7
*
* @param string $cookie
* @param string $scheme Optional. The cookie scheme to use: auth, secure_auth, or logged_in
* @return array Authentication cookie components
*/
function wp_parse_auth_cookie($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) != 3 )
return false;
list($username, $expiration, $hmac) = $cookie_elements;
return compact('username', 'expiration', 'hmac', 'scheme');
}
endif;
if ( !function_exists('wp_set_auth_cookie') ) :
/**
* Sets the authentication cookies based User ID.
*
* 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
*
* @param int $user_id User ID
* @param bool $remember Whether to remember the user
*/
function wp_set_auth_cookie($user_id, $remember = false, $secure = '') {
if ( $remember ) {
$expiration = $expire = time() + apply_filters('auth_cookie_expiration', 1209600, $user_id, $remember);
} else {
$expiration = time() + apply_filters('auth_cookie_expiration', 172800, $user_id, $remember);
$expire = 0;
}
if ( '' === $secure )
$secure = is_ssl();
$secure = apply_filters('secure_auth_cookie', $secure, $user_id);
$secure_logged_in_cookie = apply_filters('secure_logged_in_cookie', false, $user_id, $secure);
if ( $secure ) {
$auth_cookie_name = SECURE_AUTH_COOKIE;
$scheme = 'secure_auth';
} else {
$auth_cookie_name = AUTH_COOKIE;
$scheme = 'auth';
}
$auth_cookie = wp_generate_auth_cookie($user_id, $expiration, $scheme);
$logged_in_cookie = wp_generate_auth_cookie($user_id, $expiration, 'logged_in');
do_action('set_auth_cookie', $auth_cookie, $expire, $expiration, $user_id, $scheme);
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
*/
function wp_clear_auth_cookie() {
do_action('clear_auth_cookie');
setcookie(AUTH_COOKIE, ' ', time() - 31536000, ADMIN_COOKIE_PATH, COOKIE_DOMAIN);
setcookie(SECURE_AUTH_COOKIE, ' ', time() - 31536000, ADMIN_COOKIE_PATH, COOKIE_DOMAIN);
setcookie(AUTH_COOKIE, ' ', time() - 31536000, PLUGINS_COOKIE_PATH, COOKIE_DOMAIN);
setcookie(SECURE_AUTH_COOKIE, ' ', time() - 31536000, PLUGINS_COOKIE_PATH, COOKIE_DOMAIN);
setcookie(LOGGED_IN_COOKIE, ' ', time() - 31536000, COOKIEPATH, COOKIE_DOMAIN);
setcookie(LOGGED_IN_COOKIE, ' ', time() - 31536000, SITECOOKIEPATH, COOKIE_DOMAIN);
// Old cookies
setcookie(AUTH_COOKIE, ' ', time() - 31536000, COOKIEPATH, COOKIE_DOMAIN);
setcookie(AUTH_COOKIE, ' ', time() - 31536000, SITECOOKIEPATH, COOKIE_DOMAIN);
setcookie(SECURE_AUTH_COOKIE, ' ', time() - 31536000, COOKIEPATH, COOKIE_DOMAIN);
setcookie(SECURE_AUTH_COOKIE, ' ', time() - 31536000, SITECOOKIEPATH, COOKIE_DOMAIN);
// Even older cookies
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;
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;
}
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
*/
function auth_redirect() {
// Checks if a user is logged in, if not redirects them to the login page
$secure = ( is_ssl() || force_ssl_admin() );
$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(preg_replace('|^http://|', 'https://', $_SERVER['REQUEST_URI']));
exit();
} else {
wp_redirect('https://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI']);
exit();
}
}
if ( is_user_admin() )
$scheme = 'logged_in';
else
$scheme = apply_filters( 'auth_redirect_scheme', '' );
if ( $user_id = wp_validate_auth_cookie( '', $scheme) ) {
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(preg_replace('|^http://|', 'https://', $_SERVER['REQUEST_URI']));
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();
if ( is_ssl() )
$proto = 'https://';
else
$proto = 'http://';
$redirect = ( strpos($_SERVER['REQUEST_URI'], '/options.php') && wp_get_referer() ) ? wp_get_referer() : $proto . $_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') ) :
/**
* Makes sure that a user was referred from another admin page.
*
* To avoid security exploits.
*
* @since 1.2.0
* @uses do_action() Calls 'check_admin_referer' on $action.
*
* @param string $action Action nonce
* @param string $query_arg where to look for nonce in $_REQUEST (since 2.5)
*/
function check_admin_referer($action = -1, $query_arg = '_wpnonce') {
if ( -1 == $action )
_doing_it_wrong( __FUNCTION__, __( 'You should specify a nonce action to be verified by using the first parameter.' ), '3.2' );
$adminurl = strtolower(admin_url());
$referer = strtolower(wp_get_referer());
$result = isset($_REQUEST[$query_arg]) ? wp_verify_nonce($_REQUEST[$query_arg], $action) : false;
if ( !$result && !(-1 == $action && strpos($referer, $adminurl) === 0) ) {
wp_nonce_ays($action);
die();
}
do_action('check_admin_referer', $action, $result);
return $result;
}endif;
if ( !function_exists('check_ajax_referer') ) :
/**
* Verifies the AJAX request to prevent processing requests external of the blog.
*
* @since 2.0.3
*
* @param string $action Action nonce
* @param string $query_arg where to look for nonce in $_REQUEST (since 2.5)
*/
function check_ajax_referer( $action = -1, $query_arg = false, $die = true ) {
if ( $query_arg )
$nonce = $_REQUEST[$query_arg];
else
$nonce = isset($_REQUEST['_ajax_nonce']) ? $_REQUEST['_ajax_nonce'] : $_REQUEST['_wpnonce'];
$result = wp_verify_nonce( $nonce, $action );
if ( $die && false == $result )
die('-1');
do_action('check_ajax_referer', $action, $result);
return $result;
}
endif;
if ( !function_exists('wp_redirect') ) :
/**
* Redirects to another page.
*
* @since 1.5.1
* @uses apply_filters() Calls 'wp_redirect' hook on $location and $status.
*
* @param string $location The path to redirect to
* @param int $status Status code to use
* @return bool False if $location is not set
*/
function wp_redirect($location, $status = 302) {
global $is_IIS;
$location = apply_filters('wp_redirect', $location, $status);
$status = apply_filters('wp_redirect_status', $status, $location);
if ( !$location ) // allows the wp_redirect filter to cancel a redirect
return false;
$location = wp_sanitize_redirect($location);
if ( !$is_IIS && php_sapi_name() != 'cgi-fcgi' )
status_header($status); // This causes problems on IIS and some FastCGI setups
header("Location: $location", true, $status);
}
endif;
if ( !function_exists('wp_sanitize_redirect') ) :
/**
* Sanitizes a URL for use in a redirect.
*
* @since 2.3
*
* @return string redirect-sanitized URL
**/
function wp_sanitize_redirect($location) {
$location = preg_replace('|[^a-z0-9-~+_.?#=&;,/:%!]|i', '', $location);
$location = wp_kses_no_null($location);
// remove %0d and %0a from location
$strip = array('%0d', '%0a', '%0D', '%0A');
$location = _deep_replace($strip, $location);
return $location;
}
endif;
if ( !function_exists('wp_safe_redirect') ) :
/**
* Performs a safe (local) redirect, using wp_redirect().
*
* Checks whether the $location is using an allowed host, if it has an absolute
* path. A plugin can therefore set or remove allowed host(s) to or from the
* list.
*
* If the host is not allowed, then the redirect is to wp-admin on the siteurl
* instead. This prevents malicious redirects which redirect to another host,
* but only used in a few places.
*
* @since 2.3
* @uses wp_validate_redirect() To validate the redirect is to an allowed host.
*
* @return void Does not return anything
**/
function wp_safe_redirect($location, $status = 302) {
// Need to look at the URL the way it will end up in wp_redirect()
$location = wp_sanitize_redirect($location);
$location = wp_validate_redirect($location, admin_url());
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
* @uses apply_filters() Calls 'allowed_redirect_hosts' on an array containing
* WordPress host string and $location host string.
*
* @param string $location The redirect to validate
* @param string $default The value to return is $location is not allowed