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Changeset 38353


Ignore:
Timestamp:
08/25/2016 05:43:41 PM (4 years ago)
Author:
wonderboymusic
Message:

Session: move WP_Session_Tokens and WP_User_Meta_Session_Tokens into their own files via svn cp. If we move forard with autoloading, session.php is useless. We could even remove it now, and just load these new files in wp-settings.php. That can be decided post-mortem.

See #37827.

Location:
trunk/src/wp-includes
Files:
1 edited
2 copied

Legend:

Unmodified
Added
Removed
  • trunk/src/wp-includes/class-wp-session-tokens.php

    r38350 r38353  
    11<?php
     2/**
     3 * Session API: WP_Session_Tokens class
     4 *
     5 * @package WordPress
     6 * @subpackage Session
     7 * @since 4.7.0
     8 */
     9
    210/**
    311 * Abstract class for managing user session tokens.
     
    308316    public static function drop_sessions() {}
    309317}
    310 
    311 /**
    312  * Meta-based user sessions token manager.
    313  *
    314  * @since 4.0.0
    315  */
    316 class WP_User_Meta_Session_Tokens extends WP_Session_Tokens {
    317 
    318     /**
    319      * Get all sessions of a user.
    320      *
    321      * @since 4.0.0
    322      * @access protected
    323      *
    324      * @return array Sessions of a user.
    325      */
    326     protected function get_sessions() {
    327         $sessions = get_user_meta( $this->user_id, 'session_tokens', true );
    328 
    329         if ( ! is_array( $sessions ) ) {
    330             return array();
    331         }
    332 
    333         $sessions = array_map( array( $this, 'prepare_session' ), $sessions );
    334         return array_filter( $sessions, array( $this, 'is_still_valid' ) );
    335     }
    336 
    337     /**
    338      * Converts an expiration to an array of session information.
    339      *
    340      * @param mixed $session Session or expiration.
    341      * @return array Session.
    342      */
    343     protected function prepare_session( $session ) {
    344         if ( is_int( $session ) ) {
    345             return array( 'expiration' => $session );
    346         }
    347 
    348         return $session;
    349     }
    350 
    351     /**
    352      * Retrieve a session by its verifier (token hash).
    353      *
    354      * @since 4.0.0
    355      * @access protected
    356      *
    357      * @param string $verifier Verifier of the session to retrieve.
    358      * @return array|null The session, or null if it does not exist
    359      */
    360     protected function get_session( $verifier ) {
    361         $sessions = $this->get_sessions();
    362 
    363         if ( isset( $sessions[ $verifier ] ) ) {
    364             return $sessions[ $verifier ];
    365         }
    366 
    367         return null;
    368     }
    369 
    370     /**
    371      * Update a session by its verifier.
    372      *
    373      * @since 4.0.0
    374      * @access protected
    375      *
    376      * @param string $verifier Verifier of the session to update.
    377      * @param array  $session  Optional. Session. Omitting this argument destroys the session.
    378      */
    379     protected function update_session( $verifier, $session = null ) {
    380         $sessions = $this->get_sessions();
    381 
    382         if ( $session ) {
    383             $sessions[ $verifier ] = $session;
    384         } else {
    385             unset( $sessions[ $verifier ] );
    386         }
    387 
    388         $this->update_sessions( $sessions );
    389     }
    390 
    391     /**
    392      * Update a user's sessions in the usermeta table.
    393      *
    394      * @since 4.0.0
    395      * @access protected
    396      *
    397      * @param array $sessions Sessions.
    398      */
    399     protected function update_sessions( $sessions ) {
    400         if ( $sessions ) {
    401             update_user_meta( $this->user_id, 'session_tokens', $sessions );
    402         } else {
    403             delete_user_meta( $this->user_id, 'session_tokens' );
    404         }
    405     }
    406 
    407     /**
    408      * Destroy all session tokens for a user, except a single session passed.
    409      *
    410      * @since 4.0.0
    411      * @access protected
    412      *
    413      * @param string $verifier Verifier of the session to keep.
    414      */
    415     protected function destroy_other_sessions( $verifier ) {
    416         $session = $this->get_session( $verifier );
    417         $this->update_sessions( array( $verifier => $session ) );
    418     }
    419 
    420     /**
    421      * Destroy all session tokens for a user.
    422      *
    423      * @since 4.0.0
    424      * @access protected
    425      */
    426     protected function destroy_all_sessions() {
    427         $this->update_sessions( array() );
    428     }
    429 
    430     /**
    431      * Destroy all session tokens for all users.
    432      *
    433      * @since 4.0.0
    434      * @access public
    435      * @static
    436      */
    437     public static function drop_sessions() {
    438         delete_metadata( 'user', 0, 'session_tokens', false, true );
    439     }
    440 }
  • trunk/src/wp-includes/class-wp-user-meta-session-tokens.php

    r38350 r38353  
    11<?php
    22/**
    3  * Abstract class for managing user session tokens.
     3 * Session API: WP_User_Meta_Session_Tokens class
    44 *
    5  * @since 4.0.0
     5 * @package WordPress
     6 * @subpackage Session
     7 * @since 4.7.0
    68 */
    7 abstract class WP_Session_Tokens {
    8 
    9     /**
    10      * User ID.
    11      *
    12      * @since 4.0.0
    13      * @access protected
    14      * @var int User ID.
    15      */
    16     protected $user_id;
    17 
    18     /**
    19      * Protected constructor.
    20      *
    21      * @since 4.0.0
    22      *
    23      * @param int $user_id User whose session to manage.
    24      */
    25     protected function __construct( $user_id ) {
    26         $this->user_id = $user_id;
    27     }
    28 
    29     /**
    30      * Get a session token manager instance for a user.
    31      *
    32      * This method contains a filter that allows a plugin to swap out
    33      * the session manager for a subclass of WP_Session_Tokens.
    34      *
    35      * @since 4.0.0
    36      * @access public
    37      * @static
    38      *
    39      * @param int $user_id User whose session to manage.
    40      */
    41     final public static function get_instance( $user_id ) {
    42         /**
    43          * Filters the session token manager used.
    44          *
    45          * @since 4.0.0
    46          *
    47          * @param string $session Name of class to use as the manager.
    48          *                        Default 'WP_User_Meta_Session_Tokens'.
    49          */
    50         $manager = apply_filters( 'session_token_manager', 'WP_User_Meta_Session_Tokens' );
    51         return new $manager( $user_id );
    52     }
    53 
    54     /**
    55      * Hashes a session token for storage.
    56      *
    57      * @since 4.0.0
    58      * @access private
    59      *
    60      * @param string $token Session token to hash.
    61      * @return string A hash of the session token (a verifier).
    62      */
    63     final private function hash_token( $token ) {
    64         // If ext/hash is not present, use sha1() instead.
    65         if ( function_exists( 'hash' ) ) {
    66             return hash( 'sha256', $token );
    67         } else {
    68             return sha1( $token );
    69         }
    70     }
    71 
    72     /**
    73      * Get a user's session.
    74      *
    75      * @since 4.0.0
    76      * @access public
    77      *
    78      * @param string $token Session token
    79      * @return array User session
    80      */
    81     final public function get( $token ) {
    82         $verifier = $this->hash_token( $token );
    83         return $this->get_session( $verifier );
    84     }
    85 
    86     /**
    87      * Validate a user's session token as authentic.
    88      *
    89      * Checks that the given token is present and hasn't expired.
    90      *
    91      * @since 4.0.0
    92      * @access public
    93      *
    94      * @param string $token Token to verify.
    95      * @return bool Whether the token is valid for the user.
    96      */
    97     final public function verify( $token ) {
    98         $verifier = $this->hash_token( $token );
    99         return (bool) $this->get_session( $verifier );
    100     }
    101 
    102     /**
    103      * Generate a session token and attach session information to it.
    104      *
    105      * A session token is a long, random string. It is used in a cookie
    106      * link that cookie to an expiration time and to ensure the cookie
    107      * becomes invalidated upon logout.
    108      *
    109      * This function generates a token and stores it with the associated
    110      * expiration time (and potentially other session information via the
    111      * {@see 'attach_session_information'} filter).
    112      *
    113      * @since 4.0.0
    114      * @access public
    115      *
    116      * @param int $expiration Session expiration timestamp.
    117      * @return string Session token.
    118      */
    119     final public function create( $expiration ) {
    120         /**
    121          * Filters the information attached to the newly created session.
    122          *
    123          * Could be used in the future to attach information such as
    124          * IP address or user agent to a session.
    125          *
    126          * @since 4.0.0
    127          *
    128          * @param array $session Array of extra data.
    129          * @param int   $user_id User ID.
    130          */
    131         $session = apply_filters( 'attach_session_information', array(), $this->user_id );
    132         $session['expiration'] = $expiration;
    133 
    134         // IP address.
    135         if ( !empty( $_SERVER['REMOTE_ADDR'] ) ) {
    136             $session['ip'] = $_SERVER['REMOTE_ADDR'];
    137         }
    138 
    139         // User-agent.
    140         if ( ! empty( $_SERVER['HTTP_USER_AGENT'] ) ) {
    141             $session['ua'] = wp_unslash( $_SERVER['HTTP_USER_AGENT'] );
    142         }
    143 
    144         // Timestamp
    145         $session['login'] = time();
    146 
    147         $token = wp_generate_password( 43, false, false );
    148 
    149         $this->update( $token, $session );
    150 
    151         return $token;
    152     }
    153 
    154     /**
    155      * Update a session token.
    156      *
    157      * @since 4.0.0
    158      * @access public
    159      *
    160      * @param string $token Session token to update.
    161      * @param array  $session Session information.
    162      */
    163     final public function update( $token, $session ) {
    164         $verifier = $this->hash_token( $token );
    165         $this->update_session( $verifier, $session );
    166     }
    167 
    168     /**
    169      * Destroy a session token.
    170      *
    171      * @since 4.0.0
    172      * @access public
    173      *
    174      * @param string $token Session token to destroy.
    175      */
    176     final public function destroy( $token ) {
    177         $verifier = $this->hash_token( $token );
    178         $this->update_session( $verifier, null );
    179     }
    180 
    181     /**
    182      * Destroy all session tokens for this user,
    183      * except a single token, presumably the one in use.
    184      *
    185      * @since 4.0.0
    186      * @access public
    187      *
    188      * @param string $token_to_keep Session token to keep.
    189      */
    190     final public function destroy_others( $token_to_keep ) {
    191         $verifier = $this->hash_token( $token_to_keep );
    192         $session = $this->get_session( $verifier );
    193         if ( $session ) {
    194             $this->destroy_other_sessions( $verifier );
    195         } else {
    196             $this->destroy_all_sessions();
    197         }
    198     }
    199 
    200     /**
    201      * Determine whether a session token is still valid,
    202      * based on expiration.
    203      *
    204      * @since 4.0.0
    205      * @access protected
    206      *
    207      * @param array $session Session to check.
    208      * @return bool Whether session is valid.
    209      */
    210     final protected function is_still_valid( $session ) {
    211         return $session['expiration'] >= time();
    212     }
    213 
    214     /**
    215      * Destroy all session tokens for a user.
    216      *
    217      * @since 4.0.0
    218      * @access public
    219      */
    220     final public function destroy_all() {
    221         $this->destroy_all_sessions();
    222     }
    223 
    224     /**
    225      * Destroy all session tokens for all users.
    226      *
    227      * @since 4.0.0
    228      * @access public
    229      * @static
    230      */
    231     final public static function destroy_all_for_all_users() {
    232         $manager = apply_filters( 'session_token_manager', 'WP_User_Meta_Session_Tokens' );
    233         call_user_func( array( $manager, 'drop_sessions' ) );
    234     }
    235 
    236     /**
    237      * Retrieve all sessions of a user.
    238      *
    239      * @since 4.0.0
    240      * @access public
    241      *
    242      * @return array Sessions of a user.
    243      */
    244     final public function get_all() {
    245         return array_values( $this->get_sessions() );
    246     }
    247 
    248     /**
    249      * This method should retrieve all sessions of a user, keyed by verifier.
    250      *
    251      * @since 4.0.0
    252      * @access protected
    253      *
    254      * @return array Sessions of a user, keyed by verifier.
    255      */
    256     abstract protected function get_sessions();
    257 
    258     /**
    259      * This method should look up a session by its verifier (token hash).
    260      *
    261      * @since 4.0.0
    262      * @access protected
    263      *
    264      * @param string $verifier Verifier of the session to retrieve.
    265      * @return array|null The session, or null if it does not exist.
    266      */
    267     abstract protected function get_session( $verifier );
    268 
    269     /**
    270      * This method should update a session by its verifier.
    271      *
    272      * Omitting the second argument should destroy the session.
    273      *
    274      * @since 4.0.0
    275      * @access protected
    276      *
    277      * @param string $verifier Verifier of the session to update.
    278      * @param array  $session  Optional. Session. Omitting this argument destroys the session.
    279      */
    280     abstract protected function update_session( $verifier, $session = null );
    281 
    282     /**
    283      * This method should destroy all session tokens for this user,
    284      * except a single session passed.
    285      *
    286      * @since 4.0.0
    287      * @access protected
    288      *
    289      * @param string $verifier Verifier of the session to keep.
    290      */
    291     abstract protected function destroy_other_sessions( $verifier );
    292 
    293     /**
    294      * This method should destroy all sessions for a user.
    295      *
    296      * @since 4.0.0
    297      * @access protected
    298      */
    299     abstract protected function destroy_all_sessions();
    300 
    301     /**
    302      * This static method should destroy all session tokens for all users.
    303      *
    304      * @since 4.0.0
    305      * @access public
    306      * @static
    307      */
    308     public static function drop_sessions() {}
    309 }
    3109
    31110/**
  • trunk/src/wp-includes/session.php

    r37544 r38353  
    11<?php
    22/**
    3  * Abstract class for managing user session tokens.
     3 * Session API
    44 *
    55 * @since 4.0.0
    66 */
    7 abstract class WP_Session_Tokens {
    87
    9     /**
    10      * User ID.
    11      *
    12      * @since 4.0.0
    13      * @access protected
    14      * @var int User ID.
    15      */
    16     protected $user_id;
    17 
    18     /**
    19      * Protected constructor.
    20      *
    21      * @since 4.0.0
    22      *
    23      * @param int $user_id User whose session to manage.
    24      */
    25     protected function __construct( $user_id ) {
    26         $this->user_id = $user_id;
    27     }
    28 
    29     /**
    30      * Get a session token manager instance for a user.
    31      *
    32      * This method contains a filter that allows a plugin to swap out
    33      * the session manager for a subclass of WP_Session_Tokens.
    34      *
    35      * @since 4.0.0
    36      * @access public
    37      * @static
    38      *
    39      * @param int $user_id User whose session to manage.
    40      */
    41     final public static function get_instance( $user_id ) {
    42         /**
    43          * Filters the session token manager used.
    44          *
    45          * @since 4.0.0
    46          *
    47          * @param string $session Name of class to use as the manager.
    48          *                        Default 'WP_User_Meta_Session_Tokens'.
    49          */
    50         $manager = apply_filters( 'session_token_manager', 'WP_User_Meta_Session_Tokens' );
    51         return new $manager( $user_id );
    52     }
    53 
    54     /**
    55      * Hashes a session token for storage.
    56      *
    57      * @since 4.0.0
    58      * @access private
    59      *
    60      * @param string $token Session token to hash.
    61      * @return string A hash of the session token (a verifier).
    62      */
    63     final private function hash_token( $token ) {
    64         // If ext/hash is not present, use sha1() instead.
    65         if ( function_exists( 'hash' ) ) {
    66             return hash( 'sha256', $token );
    67         } else {
    68             return sha1( $token );
    69         }
    70     }
    71 
    72     /**
    73      * Get a user's session.
    74      *
    75      * @since 4.0.0
    76      * @access public
    77      *
    78      * @param string $token Session token
    79      * @return array User session
    80      */
    81     final public function get( $token ) {
    82         $verifier = $this->hash_token( $token );
    83         return $this->get_session( $verifier );
    84     }
    85 
    86     /**
    87      * Validate a user's session token as authentic.
    88      *
    89      * Checks that the given token is present and hasn't expired.
    90      *
    91      * @since 4.0.0
    92      * @access public
    93      *
    94      * @param string $token Token to verify.
    95      * @return bool Whether the token is valid for the user.
    96      */
    97     final public function verify( $token ) {
    98         $verifier = $this->hash_token( $token );
    99         return (bool) $this->get_session( $verifier );
    100     }
    101 
    102     /**
    103      * Generate a session token and attach session information to it.
    104      *
    105      * A session token is a long, random string. It is used in a cookie
    106      * link that cookie to an expiration time and to ensure the cookie
    107      * becomes invalidated upon logout.
    108      *
    109      * This function generates a token and stores it with the associated
    110      * expiration time (and potentially other session information via the
    111      * {@see 'attach_session_information'} filter).
    112      *
    113      * @since 4.0.0
    114      * @access public
    115      *
    116      * @param int $expiration Session expiration timestamp.
    117      * @return string Session token.
    118      */
    119     final public function create( $expiration ) {
    120         /**
    121          * Filters the information attached to the newly created session.
    122          *
    123          * Could be used in the future to attach information such as
    124          * IP address or user agent to a session.
    125          *
    126          * @since 4.0.0
    127          *
    128          * @param array $session Array of extra data.
    129          * @param int   $user_id User ID.
    130          */
    131         $session = apply_filters( 'attach_session_information', array(), $this->user_id );
    132         $session['expiration'] = $expiration;
    133 
    134         // IP address.
    135         if ( !empty( $_SERVER['REMOTE_ADDR'] ) ) {
    136             $session['ip'] = $_SERVER['REMOTE_ADDR'];
    137         }
    138 
    139         // User-agent.
    140         if ( ! empty( $_SERVER['HTTP_USER_AGENT'] ) ) {
    141             $session['ua'] = wp_unslash( $_SERVER['HTTP_USER_AGENT'] );
    142         }
    143 
    144         // Timestamp
    145         $session['login'] = time();
    146 
    147         $token = wp_generate_password( 43, false, false );
    148 
    149         $this->update( $token, $session );
    150 
    151         return $token;
    152     }
    153 
    154     /**
    155      * Update a session token.
    156      *
    157      * @since 4.0.0
    158      * @access public
    159      *
    160      * @param string $token Session token to update.
    161      * @param array  $session Session information.
    162      */
    163     final public function update( $token, $session ) {
    164         $verifier = $this->hash_token( $token );
    165         $this->update_session( $verifier, $session );
    166     }
    167 
    168     /**
    169      * Destroy a session token.
    170      *
    171      * @since 4.0.0
    172      * @access public
    173      *
    174      * @param string $token Session token to destroy.
    175      */
    176     final public function destroy( $token ) {
    177         $verifier = $this->hash_token( $token );
    178         $this->update_session( $verifier, null );
    179     }
    180 
    181     /**
    182      * Destroy all session tokens for this user,
    183      * except a single token, presumably the one in use.
    184      *
    185      * @since 4.0.0
    186      * @access public
    187      *
    188      * @param string $token_to_keep Session token to keep.
    189      */
    190     final public function destroy_others( $token_to_keep ) {
    191         $verifier = $this->hash_token( $token_to_keep );
    192         $session = $this->get_session( $verifier );
    193         if ( $session ) {
    194             $this->destroy_other_sessions( $verifier );
    195         } else {
    196             $this->destroy_all_sessions();
    197         }
    198     }
    199 
    200     /**
    201      * Determine whether a session token is still valid,
    202      * based on expiration.
    203      *
    204      * @since 4.0.0
    205      * @access protected
    206      *
    207      * @param array $session Session to check.
    208      * @return bool Whether session is valid.
    209      */
    210     final protected function is_still_valid( $session ) {
    211         return $session['expiration'] >= time();
    212     }
    213 
    214     /**
    215      * Destroy all session tokens for a user.
    216      *
    217      * @since 4.0.0
    218      * @access public
    219      */
    220     final public function destroy_all() {
    221         $this->destroy_all_sessions();
    222     }
    223 
    224     /**
    225      * Destroy all session tokens for all users.
    226      *
    227      * @since 4.0.0
    228      * @access public
    229      * @static
    230      */
    231     final public static function destroy_all_for_all_users() {
    232         $manager = apply_filters( 'session_token_manager', 'WP_User_Meta_Session_Tokens' );
    233         call_user_func( array( $manager, 'drop_sessions' ) );
    234     }
    235 
    236     /**
    237      * Retrieve all sessions of a user.
    238      *
    239      * @since 4.0.0
    240      * @access public
    241      *
    242      * @return array Sessions of a user.
    243      */
    244     final public function get_all() {
    245         return array_values( $this->get_sessions() );
    246     }
    247 
    248     /**
    249      * This method should retrieve all sessions of a user, keyed by verifier.
    250      *
    251      * @since 4.0.0
    252      * @access protected
    253      *
    254      * @return array Sessions of a user, keyed by verifier.
    255      */
    256     abstract protected function get_sessions();
    257 
    258     /**
    259      * This method should look up a session by its verifier (token hash).
    260      *
    261      * @since 4.0.0
    262      * @access protected
    263      *
    264      * @param string $verifier Verifier of the session to retrieve.
    265      * @return array|null The session, or null if it does not exist.
    266      */
    267     abstract protected function get_session( $verifier );
    268 
    269     /**
    270      * This method should update a session by its verifier.
    271      *
    272      * Omitting the second argument should destroy the session.
    273      *
    274      * @since 4.0.0
    275      * @access protected
    276      *
    277      * @param string $verifier Verifier of the session to update.
    278      * @param array  $session  Optional. Session. Omitting this argument destroys the session.
    279      */
    280     abstract protected function update_session( $verifier, $session = null );
    281 
    282     /**
    283      * This method should destroy all session tokens for this user,
    284      * except a single session passed.
    285      *
    286      * @since 4.0.0
    287      * @access protected
    288      *
    289      * @param string $verifier Verifier of the session to keep.
    290      */
    291     abstract protected function destroy_other_sessions( $verifier );
    292 
    293     /**
    294      * This method should destroy all sessions for a user.
    295      *
    296      * @since 4.0.0
    297      * @access protected
    298      */
    299     abstract protected function destroy_all_sessions();
    300 
    301     /**
    302      * This static method should destroy all session tokens for all users.
    303      *
    304      * @since 4.0.0
    305      * @access public
    306      * @static
    307      */
    308     public static function drop_sessions() {}
    309 }
    310 
    311 /**
    312  * Meta-based user sessions token manager.
    313  *
    314  * @since 4.0.0
    315  */
    316 class WP_User_Meta_Session_Tokens extends WP_Session_Tokens {
    317 
    318     /**
    319      * Get all sessions of a user.
    320      *
    321      * @since 4.0.0
    322      * @access protected
    323      *
    324      * @return array Sessions of a user.
    325      */
    326     protected function get_sessions() {
    327         $sessions = get_user_meta( $this->user_id, 'session_tokens', true );
    328 
    329         if ( ! is_array( $sessions ) ) {
    330             return array();
    331         }
    332 
    333         $sessions = array_map( array( $this, 'prepare_session' ), $sessions );
    334         return array_filter( $sessions, array( $this, 'is_still_valid' ) );
    335     }
    336 
    337     /**
    338      * Converts an expiration to an array of session information.
    339      *
    340      * @param mixed $session Session or expiration.
    341      * @return array Session.
    342      */
    343     protected function prepare_session( $session ) {
    344         if ( is_int( $session ) ) {
    345             return array( 'expiration' => $session );
    346         }
    347 
    348         return $session;
    349     }
    350 
    351     /**
    352      * Retrieve a session by its verifier (token hash).
    353      *
    354      * @since 4.0.0
    355      * @access protected
    356      *
    357      * @param string $verifier Verifier of the session to retrieve.
    358      * @return array|null The session, or null if it does not exist
    359      */
    360     protected function get_session( $verifier ) {
    361         $sessions = $this->get_sessions();
    362 
    363         if ( isset( $sessions[ $verifier ] ) ) {
    364             return $sessions[ $verifier ];
    365         }
    366 
    367         return null;
    368     }
    369 
    370     /**
    371      * Update a session by its verifier.
    372      *
    373      * @since 4.0.0
    374      * @access protected
    375      *
    376      * @param string $verifier Verifier of the session to update.
    377      * @param array  $session  Optional. Session. Omitting this argument destroys the session.
    378      */
    379     protected function update_session( $verifier, $session = null ) {
    380         $sessions = $this->get_sessions();
    381 
    382         if ( $session ) {
    383             $sessions[ $verifier ] = $session;
    384         } else {
    385             unset( $sessions[ $verifier ] );
    386         }
    387 
    388         $this->update_sessions( $sessions );
    389     }
    390 
    391     /**
    392      * Update a user's sessions in the usermeta table.
    393      *
    394      * @since 4.0.0
    395      * @access protected
    396      *
    397      * @param array $sessions Sessions.
    398      */
    399     protected function update_sessions( $sessions ) {
    400         if ( $sessions ) {
    401             update_user_meta( $this->user_id, 'session_tokens', $sessions );
    402         } else {
    403             delete_user_meta( $this->user_id, 'session_tokens' );
    404         }
    405     }
    406 
    407     /**
    408      * Destroy all session tokens for a user, except a single session passed.
    409      *
    410      * @since 4.0.0
    411      * @access protected
    412      *
    413      * @param string $verifier Verifier of the session to keep.
    414      */
    415     protected function destroy_other_sessions( $verifier ) {
    416         $session = $this->get_session( $verifier );
    417         $this->update_sessions( array( $verifier => $session ) );
    418     }
    419 
    420     /**
    421      * Destroy all session tokens for a user.
    422      *
    423      * @since 4.0.0
    424      * @access protected
    425      */
    426     protected function destroy_all_sessions() {
    427         $this->update_sessions( array() );
    428     }
    429 
    430     /**
    431      * Destroy all session tokens for all users.
    432      *
    433      * @since 4.0.0
    434      * @access public
    435      * @static
    436      */
    437     public static function drop_sessions() {
    438         delete_metadata( 'user', 0, 'session_tokens', false, true );
    439     }
    440 }
     8require_once( ABSPATH . WPINC . '/class-wp-session-tokens.php' );
     9require_once( ABSPATH . WPINC . '/class-wp-user-meta-session-tokens.php' );
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