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   1  <?php
   2  /**
   3   * Error Protection API: WP_Paused_Extensions_Storage class
   4   *
   5   * @package WordPress
   6   * @since 5.2.0
   7   */
   8  
   9  /**
  10   * Core class used for storing paused extensions.
  11   *
  12   * @since 5.2.0
  13   */
  14  #[AllowDynamicProperties]
  15  class WP_Paused_Extensions_Storage {
  16  
  17      /**
  18       * Type of extension. Used to key extension storage. Either 'plugin' or 'theme'.
  19       *
  20       * @since 5.2.0
  21       * @var string
  22       */
  23      protected $type;
  24  
  25      /**
  26       * Constructor.
  27       *
  28       * @since 5.2.0
  29       *
  30       * @param string $extension_type Extension type. Either 'plugin' or 'theme'.
  31       */
  32  	public function __construct( $extension_type ) {
  33          $this->type = $extension_type;
  34      }
  35  
  36      /**
  37       * Records an extension error.
  38       *
  39       * Only one error is stored per extension, with subsequent errors for the same extension overriding the
  40       * previously stored error.
  41       *
  42       * @since 5.2.0
  43       *
  44       * @param string $extension Plugin or theme directory name.
  45       * @param array  $error     {
  46       *     Error information returned by `error_get_last()`.
  47       *
  48       *     @type int    $type    The error type.
  49       *     @type string $file    The name of the file in which the error occurred.
  50       *     @type int    $line    The line number in which the error occurred.
  51       *     @type string $message The error message.
  52       * }
  53       * @return bool True on success, false on failure.
  54       */
  55  	public function set( $extension, $error ) {
  56          if ( ! $this->is_api_loaded() ) {
  57              return false;
  58          }
  59  
  60          $option_name = $this->get_option_name();
  61  
  62          if ( ! $option_name ) {
  63              return false;
  64          }
  65  
  66          $paused_extensions = (array) get_option( $option_name, array() );
  67  
  68          // Do not update if the error is already stored.
  69          if ( isset( $paused_extensions[ $this->type ][ $extension ] ) && $paused_extensions[ $this->type ][ $extension ] === $error ) {
  70              return true;
  71          }
  72  
  73          $paused_extensions[ $this->type ][ $extension ] = $error;
  74  
  75          return update_option( $option_name, $paused_extensions );
  76      }
  77  
  78      /**
  79       * Forgets a previously recorded extension error.
  80       *
  81       * @since 5.2.0
  82       *
  83       * @param string $extension Plugin or theme directory name.
  84       * @return bool True on success, false on failure.
  85       */
  86  	public function delete( $extension ) {
  87          if ( ! $this->is_api_loaded() ) {
  88              return false;
  89          }
  90  
  91          $option_name = $this->get_option_name();
  92  
  93          if ( ! $option_name ) {
  94              return false;
  95          }
  96  
  97          $paused_extensions = (array) get_option( $option_name, array() );
  98  
  99          // Do not delete if no error is stored.
 100          if ( ! isset( $paused_extensions[ $this->type ][ $extension ] ) ) {
 101              return true;
 102          }
 103  
 104          unset( $paused_extensions[ $this->type ][ $extension ] );
 105  
 106          if ( empty( $paused_extensions[ $this->type ] ) ) {
 107              unset( $paused_extensions[ $this->type ] );
 108          }
 109  
 110          // Clean up the entire option if we're removing the only error.
 111          if ( ! $paused_extensions ) {
 112              return delete_option( $option_name );
 113          }
 114  
 115          return update_option( $option_name, $paused_extensions );
 116      }
 117  
 118      /**
 119       * Gets the error for an extension, if paused.
 120       *
 121       * @since 5.2.0
 122       *
 123       * @param string $extension Plugin or theme directory name.
 124       * @return array|null Error that is stored, or null if the extension is not paused.
 125       */
 126  	public function get( $extension ) {
 127          if ( ! $this->is_api_loaded() ) {
 128              return null;
 129          }
 130  
 131          $paused_extensions = $this->get_all();
 132  
 133          if ( ! isset( $paused_extensions[ $extension ] ) ) {
 134              return null;
 135          }
 136  
 137          return $paused_extensions[ $extension ];
 138      }
 139  
 140      /**
 141       * Gets the paused extensions with their errors.
 142       *
 143       * @since 5.2.0
 144       *
 145       * @return array {
 146       *     Associative array of errors keyed by extension slug.
 147       *
 148       *     @type array ...$0 Error information returned by `error_get_last()`.
 149       * }
 150       */
 151  	public function get_all() {
 152          if ( ! $this->is_api_loaded() ) {
 153              return array();
 154          }
 155  
 156          $option_name = $this->get_option_name();
 157  
 158          if ( ! $option_name ) {
 159              return array();
 160          }
 161  
 162          $paused_extensions = (array) get_option( $option_name, array() );
 163  
 164          return isset( $paused_extensions[ $this->type ] ) ? $paused_extensions[ $this->type ] : array();
 165      }
 166  
 167      /**
 168       * Remove all paused extensions.
 169       *
 170       * @since 5.2.0
 171       *
 172       * @return bool
 173       */
 174  	public function delete_all() {
 175          if ( ! $this->is_api_loaded() ) {
 176              return false;
 177          }
 178  
 179          $option_name = $this->get_option_name();
 180  
 181          if ( ! $option_name ) {
 182              return false;
 183          }
 184  
 185          $paused_extensions = (array) get_option( $option_name, array() );
 186  
 187          unset( $paused_extensions[ $this->type ] );
 188  
 189          if ( ! $paused_extensions ) {
 190              return delete_option( $option_name );
 191          }
 192  
 193          return update_option( $option_name, $paused_extensions );
 194      }
 195  
 196      /**
 197       * Checks whether the underlying API to store paused extensions is loaded.
 198       *
 199       * @since 5.2.0
 200       *
 201       * @return bool True if the API is loaded, false otherwise.
 202       */
 203  	protected function is_api_loaded() {
 204          return function_exists( 'get_option' );
 205      }
 206  
 207      /**
 208       * Get the option name for storing paused extensions.
 209       *
 210       * @since 5.2.0
 211       *
 212       * @return string
 213       */
 214  	protected function get_option_name() {
 215          if ( ! wp_recovery_mode()->is_active() ) {
 216              return '';
 217          }
 218  
 219          $session_id = wp_recovery_mode()->get_session_id();
 220          if ( empty( $session_id ) ) {
 221              return '';
 222          }
 223  
 224          return "{$session_id}_paused_extensions";
 225      }
 226  }