// RFC 6749 token endpoint for MCP OAuth, ported from PHP // OAuthTokenController::token / OAuthCodeManager::exchangeCode byte-for-byte // including their validation order (08-CONTEXT.md D-02/D-04/D-05/D-07; // canonical PHP source: OAuthTokenController.php, OAuthCodeManager.php). // // 08-04-PLAN.md ships the authorization_code grant only. grant_type= // refresh_token is dispatched with the exact PHP-parity validity check (an // unknown grant type is unsupported_grant_type; a known-but-not-yet-built // grant is invalid_grant) but its full rotation/lineage-kill semantics // (T-08-REFRESH-REPLAY) are ROADMAP.md Wave 6 (08-06-PLAN.md), not this // plan's threat register. package wristband import "net/http" // Token handles POST /oauth/mcp/token (D-09: raw route, no middleware). // This is the Phase 8 Wave 4 RED stub (08-04-PLAN.md Task 1): it always // responds 501 until Task 2 implements the real handler. func (s *Server) Token(w http.ResponseWriter, r *http.Request) { w.WriteHeader(http.StatusNotImplemented) }