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<?php

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class wfWebsiteEphemeralPayloadRetrievalException extends RuntimeException {

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}

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class wfWebsiteEphemeralPayloadExpiredException extends wfWebsiteEphemeralPayloadRetrievalException {

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const STATUS = 404;

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public function __construct() {

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parent::__construct('Ephemeral payload expired', self::STATUS);

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}

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}

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class wfWebsiteEphemeralPayloadRateLimitedException extends wfWebsiteEphemeralPayloadRetrievalException {

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const STATUS = 429;

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public function __construct() {

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parent::__construct('Request limit reached', self::STATUS);

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}

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}

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/**

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* Utilities related to the Wordfence website (wordfence.com)

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class wfWebsite {

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private static $INSTANCE = null;

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private $url;

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private function __construct($url) {

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$this->url = trailingslashit($url);

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}

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public function getUrl($relative) {

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return $this->url . $relative;

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}

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public function retrievePayload($token, &$expired) {

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$url = $this->getUrl("api/ephemeral-payload/$token");

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$response = wp_remote_get($url);

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$status = wp_remote_retrieve_response_code($response);

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if (!is_wp_error($response) && $status === 200) {

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return wp_remote_retrieve_body($response);

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}

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switch ($status) {

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case wfWebsiteEphemeralPayloadExpiredException::STATUS:

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throw new wfWebsiteEphemeralPayloadExpiredException();

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case wfWebsiteEphemeralPayloadRateLimitedException::STATUS:

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throw new wfWebsiteEphemeralPayloadRateLimitedException();

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default:

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throw new wfWebsiteEphemeralPayloadRetrievalException('Failed to retrieve ephemeral payload', (int) $status);

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}

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}

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public static function getInstance() {

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if (self::$INSTANCE === null)

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self::$INSTANCE = new self(WORDFENCE_WWW_BASE_URL);

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return self::$INSTANCE;

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}

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public static function url($relative) {

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return self::getInstance()->getUrl($relative);

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}

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}

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