feat: access tab with allowed roles and connection revocation
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01At3V6SjwbMe6eMzVGW3Hs7
This commit is contained in:
Claude Opus 5.5
@@ -0,0 +1,211 @@
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<?php
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declare(strict_types=1);
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namespace LIT\MCP\Admin;
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use LIT\MCP\Access;
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/**
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* Tab "Zugriff": roles allowed to use LIT MCP and the active OAuth connections
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* with revocation (spec §8.4).
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*/
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final class AccessTab implements AdminTab
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{
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public const GROUP = 'lit_mcp_access';
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public const REVOKE_ACTION = 'lit_mcp_revoke';
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/** @var callable(): void */
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private $terminate;
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public function __construct(
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private Access $access,
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private ConnectionRepository $connections,
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?callable $terminate = null
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) {
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$this->terminate = $terminate ?? static function (): void {
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exit;
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};
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}
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public function slug(): string
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{
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return 'zugriff';
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}
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public function label(): string
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{
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return __('Zugriff', 'wp-lit-mcp');
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}
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public function registerSettings(): void
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{
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register_setting(self::GROUP, Access::OPTION, [
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'type' => 'array',
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'sanitize_callback' => [self::class, 'sanitizeRoles'],
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'default' => ['administrator'],
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]);
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}
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public function registerActions(): void
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{
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add_action('admin_post_' . self::REVOKE_ACTION, [$this, 'handleRevoke']);
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}
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/**
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* Keeps only existing role slugs. Runs twice on the very first save (update_option
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* falls through to add_option, which sanitizes again), so each warning is added
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* only once. The settings page itself needs manage_options, not lit_mcp_use, so
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* removing the current user's own role is allowed – but warned about.
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*
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* @return list<string>
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*/
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public static function sanitizeRoles(mixed $input): array
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{
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$existing = array_keys((array) wp_roles()->roles);
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$roles = array_values(array_unique(array_intersect(
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array_filter(is_array($input) ? $input : [], 'is_string'),
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$existing
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)));
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if ($roles === []) {
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self::warnOnce(
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'lit_mcp_no_roles',
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__('Keine Rolle freigegeben – niemand kann LIT MCP nutzen.', 'wp-lit-mcp')
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);
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} elseif (self::currentUserLosesAccess($roles)) {
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self::warnOnce(
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'lit_mcp_own_role',
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__(
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'Keine Ihrer Rollen ist mehr freigegeben – Sie selbst können LIT MCP nicht mehr nutzen.',
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'wp-lit-mcp'
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)
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);
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}
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return $roles;
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}
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public function render(): void
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{
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$allowed = $this->access->allowedRoles();
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echo '<h2>' . esc_html__('Freigegebene Rollen', 'wp-lit-mcp') . '</h2>';
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echo '<p>' . esc_html__(
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'Nur Benutzer dieser Rollen können Tools nutzen; zusätzlich gelten ihre normalen WordPress-Rechte.',
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'wp-lit-mcp'
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) . '</p>';
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echo '<form method="post" action="options.php">';
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settings_fields(self::GROUP);
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// Makes an all-unchecked submission arrive as [''] instead of dropping the field.
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printf('<input type="hidden" name="%s[]" value="">', esc_attr(Access::OPTION));
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foreach (wp_roles()->get_names() as $role => $name) {
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printf(
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'<label><input type="checkbox" name="%s[]" value="%s"%s> %s</label><br>',
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esc_attr(Access::OPTION),
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esc_attr((string) $role),
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checked(in_array($role, $allowed, true), true, false),
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esc_html(translate_user_role((string) $name))
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);
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}
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submit_button();
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echo '</form>';
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$this->renderConnections();
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}
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public function handleRevoke(): void
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{
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if (! current_user_can('manage_options')) {
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wp_die(esc_html__('Keine Berechtigung.', 'wp-lit-mcp'), '', ['response' => 403]);
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}
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// phpcs:disable WordPress.Security.NonceVerification.Missing -- verified right below.
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$uuid = isset($_POST['uuid']) ? sanitize_text_field(wp_unslash((string) $_POST['uuid'])) : '';
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$userId = isset($_POST['user_id']) ? absint($_POST['user_id']) : 0;
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// phpcs:enable WordPress.Security.NonceVerification.Missing
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check_admin_referer(self::REVOKE_ACTION . '_' . $uuid);
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$revoked = $this->connections->revoke($userId, $uuid);
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$notice = $revoked ? 'revoked' : 'revoke_failed';
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wp_safe_redirect(SettingsPage::url($this->slug(), ['lit_mcp_notice' => $notice]));
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($this->terminate)();
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}
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private static function warnOnce(string $code, string $message): void
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{
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foreach ((array) get_settings_errors(Access::OPTION) as $error) {
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if (is_array($error) && ($error['code'] ?? '') === $code) {
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return;
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}
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}
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add_settings_error(Access::OPTION, $code, $message, 'warning');
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}
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/** @param list<string> $roles */
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private static function currentUserLosesAccess(array $roles): bool
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{
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// Multisite super admins pass every capability check regardless of role.
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if (is_multisite() && is_super_admin()) {
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return false;
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}
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$user = wp_get_current_user();
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return array_intersect((array) $user->roles, $roles) === [];
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}
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private function renderConnections(): void
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{
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echo '<h2>' . esc_html__('Aktive Verbindungen', 'wp-lit-mcp') . '</h2>';
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$connections = $this->connections->all();
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if ($connections === []) {
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echo '<p>' . esc_html__('Keine aktiven Verbindungen.', 'wp-lit-mcp') . '</p>';
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return;
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}
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echo '<table class="widefat striped"><thead><tr>';
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$headings = [
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__('Benutzer', 'wp-lit-mcp'),
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__('Client', 'wp-lit-mcp'),
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__('Erstellt', 'wp-lit-mcp'),
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__('Zuletzt genutzt', 'wp-lit-mcp'),
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'',
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];
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foreach ($headings as $heading) {
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echo '<th>' . esc_html($heading) . '</th>';
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}
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echo '</tr></thead><tbody>';
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foreach ($connections as $connection) {
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$this->renderConnectionRow($connection);
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}
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echo '</tbody></table>';
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}
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/**
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* @param array{user_id: int, user_login: string, uuid: string, name: string,
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* app_id: string, created: int, last_used: ?int} $connection
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*/
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private function renderConnectionRow(array $connection): void
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{
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echo '<tr>';
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echo '<td>' . esc_html($connection['user_login']) . '</td>';
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printf('<td>%s<br><code>%s</code></td>', esc_html($connection['name']), esc_html($connection['app_id']));
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echo '<td>' . esc_html((string) wp_date('Y-m-d H:i', $connection['created'])) . '</td>';
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$lastUsed = $connection['last_used'] === null
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? '–'
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: (string) wp_date('Y-m-d H:i', $connection['last_used']);
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echo '<td>' . esc_html($lastUsed) . '</td>';
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echo '<td>';
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printf('<form method="post" action="%s">', esc_url(admin_url('admin-post.php')));
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printf('<input type="hidden" name="action" value="%s">', esc_attr(self::REVOKE_ACTION));
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printf('<input type="hidden" name="user_id" value="%s">', esc_attr((string) $connection['user_id']));
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printf('<input type="hidden" name="uuid" value="%s">', esc_attr($connection['uuid']));
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wp_nonce_field(self::REVOKE_ACTION . '_' . $connection['uuid']);
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submit_button(__('Widerrufen', 'wp-lit-mcp'), 'delete small', 'submit', false);
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echo '</form></td></tr>';
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}
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}
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@@ -0,0 +1,110 @@
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<?php
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declare(strict_types=1);
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namespace LIT\MCP\Admin;
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use WPMedia\MCP\OAuth\Auth\TokenEndpoint;
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/**
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* OAuth connections created by mcp-oauth (v1.1.2, TokenEndpoint): for every grant it
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* creates one application password (name = client name, app_id = the CIMD client_id,
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* always an https URL) and stores the refresh-token marker user meta
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* `mcp_refresh_jti_<uuid>`. An application password counts as an LIT MCP connection
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* only if BOTH hold: the marker meta exists and its app_id is an https URL. Any other
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* application password of the user (other tools, manual ones) is neither listed nor
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* revoked.
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*
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* Multisite: only users who are members of the current site are managed, and a
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* non-super-admin never sees or revokes a super admin's connections.
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*
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* Not final so the access tab can be tested with a mock.
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*/
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class ConnectionRepository
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{
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public function __construct(private ?\wpdb $db = null)
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{
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}
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/**
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* @return list<array{user_id: int, user_login: string, uuid: string, name: string,
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* app_id: string, created: int, last_used: ?int}>
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*/
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public function all(): array
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{
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$wpdb = $this->db ?? $GLOBALS['wpdb'];
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$prefix = TokenEndpoint::REFRESH_JTI_META_PREFIX;
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$rows = $wpdb->get_results($wpdb->prepare(
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"SELECT user_id, meta_key FROM {$wpdb->usermeta} WHERE meta_key LIKE %s ORDER BY user_id, umeta_id",
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$wpdb->esc_like($prefix) . '%'
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));
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$connections = [];
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foreach ((array) $rows as $row) {
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$userId = (int) $row->user_id;
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$uuid = substr((string) $row->meta_key, strlen($prefix));
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if ($uuid === '' || ! $this->manageable($userId)) {
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continue;
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}
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$item = \WP_Application_Passwords::get_user_application_password($userId, $uuid);
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if (! self::isMcpOauthPassword($item)) {
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continue;
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}
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$user = get_userdata($userId);
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$connections[] = [
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'user_id' => $userId,
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'user_login' => is_object($user) ? (string) $user->user_login : '#' . $userId,
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'uuid' => $uuid,
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'name' => (string) ($item['name'] ?? ''),
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'app_id' => (string) $item['app_id'],
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'created' => (int) ($item['created'] ?? 0),
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'last_used' => isset($item['last_used']) ? (int) $item['last_used'] : null,
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];
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}
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return $connections;
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}
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public function revoke(int $userId, string $uuid): bool
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{
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if ($userId <= 0 || $uuid === '' || ! $this->manageable($userId)) {
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return false;
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}
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$marker = (string) get_user_meta($userId, TokenEndpoint::REFRESH_JTI_META_PREFIX . $uuid, true);
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if ($marker === '') {
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return false;
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}
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$item = \WP_Application_Passwords::get_user_application_password($userId, $uuid);
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if (! self::isMcpOauthPassword($item)) {
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return false;
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}
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// Fires wp_delete_application_password, on which mcp-oauth purges its marker meta.
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return \WP_Application_Passwords::delete_application_password($userId, $uuid) === true;
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}
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/** Whether the current administrator may see and revoke this user's connections. */
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private function manageable(int $userId): bool
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{
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if (! is_multisite()) {
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return true;
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}
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if (is_super_admin($userId) && ! is_super_admin()) {
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return false;
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}
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return is_user_member_of_blog($userId, get_current_blog_id());
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}
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private static function isMcpOauthPassword(mixed $item): bool
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{
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return is_array($item)
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&& is_string($item['app_id'] ?? null)
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&& str_starts_with($item['app_id'], 'https://');
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}
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}
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