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+A +100 +AcDbDictionary +280 +1 +281 +1 + 3 +CREATED_BY_EZDXF +350 +2E + 3 +WRITTEN_BY_EZDXF +350 +40 + 0 +DICTIONARYVAR + 5 +2E +330 +2D +100 +DictionaryVariables +280 +0 + 1 +1.4.4 @ 2026-10-02T10:19:52.487104+00:00 + 0 +DICTIONARYVAR + 5 +40 +330 +2D +100 +DictionaryVariables +280 +0 + 1 +1.4.4 @ 2026-10-02T10:19:52.489621+00:00 + 0 +ENDSEC + 0 +EOF diff --git a/demo-output/autocad-mcp-headless-demo.png b/demo-output/autocad-mcp-headless-demo.png new file mode 100644 index 0000000..0e19179 Binary files /dev/null and b/demo-output/autocad-mcp-headless-demo.png differ diff --git a/src/autocad_mcp/backends/base.py b/src/autocad_mcp/backends/base.py index d08be0b..751bf39 100644 --- a/src/autocad_mcp/backends/base.py +++ b/src/autocad_mcp/backends/base.py @@ -26,7 +26,12 @@ class CommandResult: def to_dict(self) -> dict: d: dict[str, Any] = {"ok": self.ok} if self.ok: - d["payload"] = self.payload + # Ensure payload is JSON-serializable; wrap non-dict payloads + if isinstance(self.payload, dict): + d["payload"] = self.payload + else: + # Wrap non-dict payloads in a dict for consistency + d["payload"] = {"result": self.payload} if self.payload is not None else None else: d["error"] = error_payload( self.error, diff --git a/src/autocad_mcp/backends/ezdxf_backend.py b/src/autocad_mcp/backends/ezdxf_backend.py index 725c344..cf99765 100644 --- a/src/autocad_mcp/backends/ezdxf_backend.py +++ b/src/autocad_mcp/backends/ezdxf_backend.py @@ -72,6 +72,19 @@ async def status(self) -> CommandResult: "capabilities": {k: v for k, v in self.capabilities.__dict__.items()}, }) + async def shutdown(self) -> None: + """Clean up backend resources.""" + try: + # Close the screenshot provider to release matplotlib resources + if hasattr(self._screenshot, 'cleanup'): + self._screenshot.cleanup() + # Clear document reference + self._doc = None + self._msp = None + except Exception: + # Silently ignore cleanup errors + pass + def _next_id(self) -> str: self._entity_counter += 1 return f"ezdxf_{self._entity_counter}" diff --git a/src/autocad_mcp/client.py b/src/autocad_mcp/client.py index 5630981..9d4d39c 100644 --- a/src/autocad_mcp/client.py +++ b/src/autocad_mcp/client.py @@ -564,6 +564,19 @@ def _screenshot_result( """Return screenshot metadata by default; inline image requires opt-in.""" if not result.ok or not result.payload: return _format_result(result) + # Validate payload type is bytes or string (base64) + payload_type = type(result.payload) + if not isinstance(result.payload, (bytes, str, dict)): + return _json( + { + "ok": False, + "error": { + "message": f"Screenshot payload must be bytes, string, or dict, got {payload_type.__name__}", + "code": "E_SCREENSHOT_TYPE_ERROR", + }, + "details": {"expected": "bytes|str|dict", "actual": payload_type.__name__}, + } + ) try: metadata, raw = _persist_screenshot(result.payload, stem=stem) except Exception as exc: @@ -587,7 +600,7 @@ def _screenshot_result( if include_image and allow_inline and len(raw) <= max_inline: metadata["inline"] = True text = _json({"ok": True, "payload": payload}) - if metadata["inline"]: + if metadata.get("inline", False): return [ TextContent(type="text", text=text), ImageContent(type="image", data=base64.b64encode(raw).decode("ascii"), mimeType="image/png"), diff --git a/src/autocad_mcp/config.py b/src/autocad_mcp/config.py index 6f7994b..2bb8351 100644 --- a/src/autocad_mcp/config.py +++ b/src/autocad_mcp/config.py @@ -8,6 +8,7 @@ import shlex import subprocess import sys +import tempfile import time import uuid from pathlib import Path @@ -26,7 +27,40 @@ # Paths LISP_DIR = Path(__file__).resolve().parent.parent.parent / "lisp-code" -IPC_DIR = Path(os.environ.get("AUTOCAD_MCP_IPC_DIR", "C:/temp")) + + +def _initialize_ipc_dir() -> Path: + """Initialize IPC directory with proper fallback and error handling.""" + configured = os.environ.get("AUTOCAD_MCP_IPC_DIR", "").strip() + if configured: + ipc_path = Path(configured) + else: + # Use system temp directory as the default instead of hardcoded C:/temp + ipc_path = Path(tempfile.gettempdir()) + + try: + # Ensure directory exists and is writable + ipc_path.mkdir(parents=True, exist_ok=True) + # Test writability + test_file = ipc_path / ".autocad_mcp_test" + test_file.write_text("") + test_file.unlink() + return ipc_path + except (OSError, PermissionError) as e: + log.warning("ipc_dir_init_failed", path=str(ipc_path), error=str(e)) + # Fallback to user's temp directory + fallback = Path(tempfile.gettempdir()) + if fallback != ipc_path: + try: + fallback.mkdir(parents=True, exist_ok=True) + return fallback + except (OSError, PermissionError): + pass + # Last resort: use current working directory + return Path.cwd() + + +IPC_DIR = _initialize_ipc_dir() # Backend selection BACKEND_DEFAULT = "auto" # auto | file_ipc | ezdxf diff --git a/src/autocad_mcp/errors.py b/src/autocad_mcp/errors.py index 39a5e17..f802683 100644 --- a/src/autocad_mcp/errors.py +++ b/src/autocad_mcp/errors.py @@ -80,8 +80,13 @@ def infer_error_code(message: str | None) -> str: return "E_VARIABLE_REJECTED" if "validation" in text or "does not match" in text: return "E_VALIDATION_FAILED" - if "plot failed" in text or "can not be set" in text: - return "E_INTERNAL" + if "plot" in text: + # More specific plot error detection + if "scale" in text: + return "E_PLOT_SCALE_MISMATCH" + if "page" in text or "media" in text or "paper" in text: + return "E_PLOT_PAGE_MISMATCH" + return "E_SYSTEM_CALL_FAILED" # Treat plot failures as system call issues if "not supported" in text or "unknown" in text: return "E_UNSUPPORTED_OPERATION" return "E_INTERNAL" @@ -94,8 +99,23 @@ def exception_context( parameters: dict | None = None, system_call: str | None = None, file_path: str | None = None, + include_traceback: bool = False, ) -> tuple[str, dict]: - """Describe an exception without reducing it to an opaque ``[Errno N]`` string.""" + """Describe an exception without reducing it to an opaque ``[Errno N]`` string. + + Args: + exc: The exception to describe + operation: Operation that was attempted + parameters: Operation parameters (field names will be logged) + system_call: Name of system call or operation made + file_path: Associated file path if applicable + include_traceback: Whether to include traceback info (for debug only) + + Returns: + Tuple of (message: str, details: dict) + """ + import traceback + errno = getattr(exc, "errno", None) winerror = getattr(exc, "winerror", None) strerror = getattr(exc, "strerror", None) @@ -114,6 +134,16 @@ def exception_context( "winerror": winerror, "system_message": strerror, } + + # Add traceback info if requested (useful for diagnostic logs) + if include_traceback: + try: + tb_lines = traceback.format_exception(type(exc), exc, exc.__traceback__) + details["traceback"] = "".join(tb_lines) + except Exception: + # Never let traceback collection fail the error reporting + pass + return message, {key: value for key, value in details.items() if value is not None} diff --git a/src/autocad_mcp/pid/__init__.py b/src/autocad_mcp/pid/__init__.py index f2a0497..bff32da 100644 --- a/src/autocad_mcp/pid/__init__.py +++ b/src/autocad_mcp/pid/__init__.py @@ -1 +1,11 @@ -"""P&ID tools and CTO block library.""" +"""P&ID tools and CTO block library. + +This module provides P&ID-specific AutoCAD operations and integration with the +CAD Tools Online (CTO) symbol library for industrial process flow diagrams. +""" + +from __future__ import annotations + +from autocad_mcp.pid.cto_library import CTO_CATEGORIES, CTO_ROOT + +__all__ = ["CTO_CATEGORIES", "CTO_ROOT"] diff --git a/src/autocad_mcp/screenshot.py b/src/autocad_mcp/screenshot.py index 2c24c70..b2c674e 100644 --- a/src/autocad_mcp/screenshot.py +++ b/src/autocad_mcp/screenshot.py @@ -48,6 +48,16 @@ def doc(self, value: ezdxf.document.Drawing): def capture(self) -> str | None: return self.render() + def cleanup(self) -> None: + """Clean up matplotlib resources.""" + try: + import matplotlib.pyplot as plt + plt.close('all') + except Exception: + # Silently ignore cleanup errors + pass + self._doc = None + def render(self, dpi: int = 150, background: str = "white") -> str | None: if self._doc is None: return None diff --git a/src/autocad_mcp/server.py b/src/autocad_mcp/server.py index a6c9932..6028ceb 100644 --- a/src/autocad_mcp/server.py +++ b/src/autocad_mcp/server.py @@ -351,10 +351,10 @@ async def _attach_document_context( { "session_id": context.payload.get("session_id"), "worker_generation": context.payload.get("worker_generation"), - "doc_id": context.payload["doc_id"], - "active_doc_id": context.payload["active_doc_id"], + "doc_id": context.payload.get("doc_id", ""), + "active_doc_id": context.payload.get("active_doc_id", ""), "active_path": context.payload.get("active_path"), - "revision": context.payload["revision"], + "revision": context.payload.get("revision", 0), "lease_token": context.payload.get("lease_token"), } ) @@ -462,6 +462,9 @@ async def _compensate_product_failure( erased, reason="product_create_failure_compensation", ) + # Ensure registry is a proper dict (validation of mark_feature_handles_invalid return) + if not isinstance(registry, dict): + registry = {"invalidated": [], "stale_count": 0, "product_state_revision": 0} return { "attempted": True, "complete": not failed and not missing_preexisting, diff --git a/src/autocad_mcp/supervisor.py b/src/autocad_mcp/supervisor.py index a98d9a2..3001663 100644 --- a/src/autocad_mcp/supervisor.py +++ b/src/autocad_mcp/supervisor.py @@ -60,6 +60,39 @@ def _append_utf8_bom_log(path: Path, event: str, **data: Any) -> None: def _process_alive(process_id: int | None) -> bool: if not process_id or process_id <= 0: return False + if sys.platform == "win32": + import ctypes + from ctypes import wintypes + + kernel32 = ctypes.WinDLL("kernel32", use_last_error=True) + open_process = kernel32.OpenProcess + open_process.argtypes = (wintypes.DWORD, wintypes.BOOL, wintypes.DWORD) + open_process.restype = wintypes.HANDLE + handle = open_process(0x00100000, False, process_id) + if not handle: + error_code = ctypes.get_last_error() + if error_code == 5: + return True + if error_code == 87: + return False + raise ctypes.WinError(error_code) + + try: + wait_for_single_object = kernel32.WaitForSingleObject + wait_for_single_object.argtypes = (wintypes.HANDLE, wintypes.DWORD) + wait_for_single_object.restype = wintypes.DWORD + close_handle = kernel32.CloseHandle + close_handle.argtypes = (wintypes.HANDLE,) + close_handle.restype = wintypes.BOOL + wait_result = wait_for_single_object(handle, 0) + if wait_result == 0x00000102: + return True + if wait_result == 0: + return False + raise ctypes.WinError(ctypes.get_last_error()) + finally: + close_handle(handle) + try: os.kill(process_id, 0) return True diff --git a/tests/test_supervisor.py b/tests/test_supervisor.py index bad6eb8..4c54298 100644 --- a/tests/test_supervisor.py +++ b/tests/test_supervisor.py @@ -2,9 +2,14 @@ import codecs import json +import os +import sys from pathlib import Path from types import SimpleNamespace +import pytest + +import autocad_mcp.supervisor as supervisor_module from autocad_mcp.supervisor import ( DesktopSupervisor, SupervisorConfig, @@ -13,6 +18,18 @@ ) +@pytest.mark.skipif( + sys.platform != "win32", reason="Windows process probing uses Win32 handles" +) +def test_process_alive_does_not_send_console_signal_on_windows(monkeypatch): + def unexpected_signal(*_args): + pytest.fail("Windows process checks must not use os.kill") + + monkeypatch.setattr(supervisor_module.os, "kill", unexpected_signal) + + assert supervisor_module._process_alive(os.getpid()) + + def test_supervisor_log_is_utf8_bom_and_preserves_chinese(tmp_path): path = tmp_path / "supervisor.log"