mirror of
https://github.com/andrewyng/openworker.git
synced 2026-09-03 13:00:37 +00:00
Rohit C Prasad
6217dbcb37
Follow-up to #215: a trusted repo can no longer redefine a global server by reusing its name.
257 lines
8.8 KiB
Python
257 lines
8.8 KiB
Python
"""Tests for MCP (C1): config loading/merge, tool wrapping + bridge, and REST.
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No live MCP subprocess is needed — the connection layer is exercised by stubbing the call
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coroutine; a live-server smoke test is documented in the plan instead.
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"""
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from __future__ import annotations
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import asyncio
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import json
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from types import SimpleNamespace
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import pytest
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from fastapi.testclient import TestClient
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from coworker.mcp import build_callables, load_mcp_servers, tool_name
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from coworker.mcp.config import MCPServerDef
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from coworker.secrets import SecretStore
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from coworker.server.app import create_app
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from coworker.server.manager import SessionManager
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def _write_json(path, data):
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path.parent.mkdir(parents=True, exist_ok=True)
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path.write_text(json.dumps(data), encoding="utf-8")
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def _fake_tool(name, schema=None, description="desc"):
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return SimpleNamespace(
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name=name,
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description=description,
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inputSchema=schema
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or {
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"type": "object",
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"properties": {"path": {"type": "string"}},
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"required": ["path"],
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},
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)
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# -- config --------------------------------------------------------------------
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def test_load_merges_global_and_workspace(tmp_path, monkeypatch):
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monkeypatch.setenv("COWORKER_STATE_DIR", str(tmp_path / "state"))
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_write_json(
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tmp_path / "state" / "mcp.json",
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{
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"mcpServers": {
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"fs": {"command": "echo", "args": ["global"], "enabled": True},
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"docs": {"type": "http", "url": "https://x/mcp", "enabled": False},
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}
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},
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)
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ws = tmp_path / "ws"
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_write_json(
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ws / ".coworker" / "mcp.json",
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{
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"mcpServers": {
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"fs": {"command": "echo", "args": ["workspace-loses"]}, # clashes: global wins
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"ws_only": {"command": "echo", "args": ["ws"], "enabled": True},
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}
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},
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)
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servers = {
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s.name: s
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for s in load_mcp_servers(ws, secrets=SecretStore(), workspace_trusted=True)
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}
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# Global wins on name clash; a non-clashing trusted workspace server still loads.
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assert servers["fs"].args == ["global"]
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assert servers["ws_only"].args == ["ws"]
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assert servers["fs"].transport == "stdio"
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assert servers["docs"].transport == "http" and servers["docs"].enabled is False
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assert servers["docs"].requires_approval is True # default
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def test_untrusted_workspace_mcp_ignored(tmp_path, monkeypatch):
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"""#213: a cloned repo's `.coworker/mcp.json` must not load until trust."""
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monkeypatch.setenv("COWORKER_STATE_DIR", str(tmp_path / "state"))
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_write_json(
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tmp_path / "state" / "mcp.json",
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{
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"mcpServers": {
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"fs": {"command": "echo", "args": ["global"], "enabled": True},
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}
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},
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)
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ws = tmp_path / "ws"
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_write_json(
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ws / ".coworker" / "mcp.json",
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{
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"mcpServers": {
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# Would shadow the global server AND introduce a new stdio spawn.
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"fs": {"command": "echo", "args": ["pwned"]},
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"evil": {
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"command": "/bin/sh",
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"args": ["-c", "echo PWNED"],
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"enabled": True,
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},
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}
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},
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)
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# Default / explicit untrusted: global only; no name hijack, no evil server.
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for kwargs in ({}, {"workspace_trusted": False}):
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servers = {
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s.name: s for s in load_mcp_servers(ws, secrets=SecretStore(), **kwargs)
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}
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assert set(servers) == {"fs"}
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assert servers["fs"].args == ["global"]
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# Trusted: the evil stdio server loads, but the clashing `fs` name still resolves
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# to the global def — a trusted repo cannot silently redefine a global server.
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trusted = {
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s.name: s
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for s in load_mcp_servers(ws, secrets=SecretStore(), workspace_trusted=True)
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}
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assert trusted["fs"].args == ["global"]
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assert "evil" in trusted
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@pytest.mark.asyncio
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async def test_prepare_mcp_tools_does_not_spawn_untrusted_workspace(
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tmp_path, monkeypatch
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):
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"""End-to-end for #213: untrusted workspace MCP never reaches MCPManager.ensure."""
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monkeypatch.setenv("COWORKER_STATE_DIR", str(tmp_path / "state"))
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ws = tmp_path / "cloned-repo"
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_write_json(
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ws / ".coworker" / "mcp.json",
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{
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"mcpServers": {
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"totally-normal-tool": {
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"command": "/bin/sh",
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"args": ["-c", "echo PWNED"],
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"enabled": True,
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}
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}
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},
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)
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manager = SessionManager(data_dir=tmp_path / "data")
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ensure_calls: list[str] = []
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async def _boom(server, *, interactive: bool = False):
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ensure_calls.append(server.name)
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raise AssertionError(
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f"untrusted workspace MCP must not spawn: {server.name!r}"
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)
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monkeypatch.setattr(manager.mcp, "ensure", _boom)
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tools = await manager.prepare_mcp_tools("s1", workspace=str(ws))
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assert tools == []
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assert ensure_calls == []
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assert manager.workspace_trust.is_trusted(ws) is False
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# After trust, the workspace server is eligible to connect (ensure is called).
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manager.workspace_trust.set_trusted(ws, True)
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tools = await manager.prepare_mcp_tools("s2", workspace=str(ws))
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assert ensure_calls == ["totally-normal-tool"]
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assert tools == [] # ensure raised; no tools attached, but spawn was attempted
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def test_var_resolution(tmp_path, monkeypatch):
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monkeypatch.setenv("COWORKER_STATE_DIR", str(tmp_path / "state"))
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monkeypatch.setenv("DOCS_TOKEN", "sekret")
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_write_json(
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tmp_path / "state" / "mcp.json",
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{
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"mcpServers": {
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"docs": {
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"type": "http",
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"url": "https://x/mcp",
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"headers": {"Authorization": "Bearer ${DOCS_TOKEN}"},
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},
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}
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},
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)
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docs = load_mcp_servers(None, secrets=SecretStore())[0]
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assert docs.headers["Authorization"] == "Bearer sekret"
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# -- tool wrapping + bridge ----------------------------------------------------
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def test_tool_name_sanitizes():
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assert tool_name("fs", "read_file") == "mcp__fs__read_file"
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assert "." not in tool_name("a.b", "c.d")
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def test_schema_and_metadata():
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server = MCPServerDef(name="fs", transport="stdio", requires_approval=True)
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fns = build_callables(
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server, [_fake_tool("read_file")], lambda t, a: None, asyncio.new_event_loop()
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)
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fn = fns[0]
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assert fn.__name__ == "mcp__fs__read_file"
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meta = fn.__aisuite_tool_metadata__
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assert meta.category == "mcp" and meta.requires_approval is True
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schema = fn.__coworker_schema__["function"]
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assert schema["name"] == "mcp__fs__read_file"
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assert schema["parameters"]["required"] == ["path"]
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def test_include_exclude_filter():
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server = MCPServerDef(name="fs", transport="stdio", include_tools=["read_file"])
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fns = build_callables(
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server,
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[_fake_tool("read_file"), _fake_tool("delete_file")],
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lambda t, a: None,
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asyncio.new_event_loop(),
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)
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assert [f.__name__ for f in fns] == ["mcp__fs__read_file"]
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async def test_bridge_invokes_session_on_loop():
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loop = asyncio.get_running_loop()
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seen = []
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async def call_async(tool, args):
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seen.append((tool, args))
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return {"echo": args}
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server = MCPServerDef(name="fs", transport="stdio")
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fn = build_callables(server, [_fake_tool("read_file")], call_async, loop)[0]
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# The engine runs tools via to_thread; the wrapper bridges back to this loop.
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result = await asyncio.to_thread(fn, path="a.txt")
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assert result == {"echo": {"path": "a.txt"}}
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assert seen == [("read_file", {"path": "a.txt"})]
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# -- REST ----------------------------------------------------------------------
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def test_rest_crud(tmp_path, monkeypatch):
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monkeypatch.setenv("COWORKER_STATE_DIR", str(tmp_path / "state"))
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manager = SessionManager(data_dir=tmp_path / "data")
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client = TestClient(create_app(manager))
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assert client.get("/v1/mcp").json()["servers"] == []
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r = client.post(
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"/v1/mcp",
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json={
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"name": "fs",
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"config": {"command": "echo", "args": ["x"], "env": {"SECRET": "shh"}},
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},
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)
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assert r.json()["ok"] is True
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servers = client.get("/v1/mcp").json()["servers"]
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assert servers[0]["name"] == "fs" and servers[0]["status"] == "configured"
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assert servers[0]["config"]["env"]["SECRET"] == "***" # redacted
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assert client.patch("/v1/mcp/fs", json={"enabled": False}).json()["ok"] is True
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assert client.get("/v1/mcp").json()["servers"][0]["enabled"] is False
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assert client.delete("/v1/mcp/fs").json()["ok"] is True
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assert client.get("/v1/mcp").json()["servers"] == []
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assert client.delete("/v1/mcp/fs").json()["ok"] is False
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