feat(R05): tool capability registry, unified policy gateway, MCP lifecycle manager

EPIC R05 (Team Hoa) - one security/approval path for every tool call.

R05-T01 domain/tools/{tool_descriptor,tool_registry}.py
  ToolCapability (READ/WRITE/EXECUTE/NETWORK, composable) + ToolDescriptor +
  ToolRegistry, replacing three independently-maintained gating lists
  (core/tools.py::WRITE_TOOLS, code_agent.py's WRITE_TOOLS|MS365_WRITE_TOOLS,
  chat_agent.py's literal ("run_command","install_package") tuple) with one
  capability lookup.

R05-T02 infrastructure/filesystem/{file_tools,command_tools,fetch_tools,tool_context}.py
  core/tools.py's execute_tool if/elif chain split into per-concern modules.
  core/tools.py is now a strangler-fig shim: re-exports ToolContext/ToolError,
  dispatches through a {name: handler} dict built from the split modules.
  core/tools.py: 566 -> 291 lines.

R05-T03 application/conversations/tool_policy_gateway.py
  ToolPolicyGateway.allow(name, gate, payload) - capability-driven ALLOW vs
  ask-the-gate decision. Wired into both chat_agent.py::run_cowork and
  code_agent.py::run_code, replacing their separate hand-rolled checks.
  Verified equivalent to the old hardcoded sets by test.

R05-T04 (behavior change, not just refactor)
  MCP/connector tools (core/mcp_client.py, core/ext_connectors.py) reached
  chat_agent.py via extra_executor(name, args) with NO permission check at
  all. They are now tagged with a conservative default capability
  (WRITE|EXECUTE|NETWORK - no MCP tool self-declares risk) and routed through
  the SAME ToolPolicyGateway as built-ins. When "confirm before running
  commands" is on, MCP/connector calls now prompt like run_command already
  did - a real gap closed, and a user-visible change worth calling out.

R05-T05 infrastructure/mcp/mcp_source_manager.py
  McpToolSourceManager extracts the connection cache/lock/start-or-skip
  lifecycle out of state.py::AppContext (_mcp_connections/_conn_lock) into a
  standalone, directly-testable class. AppContext.build_mcp_tools and
  _ms365_builtin_connection now call ensure()/stop(); _ext_connections
  (unified Connectors) is out of scope for this task and keeps its own lock.

New tests: tests/unit/test_tool_registry_and_policy.py,
test_code_agent_tool_policy.py, test_cowork_extra_tool_policy.py,
test_mcp_source_manager.py (26 new tests).

Suite: 254 passed, 4 pre-existing failures unrelated to R05 (2 EPIC R02
config-security, 2 environment-dependent routing tests - see checklist).
check_imports: PASS. All new files < 400 LOC.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
This commit is contained in:
2026-08-21 22:20:57 +09:00
co-authored by Claude Sonnet 5
parent 6d3217e0b5
commit ae4fe72b2e
22 changed files with 1355 additions and 412 deletions
+4 -2
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@@ -1,8 +1,10 @@
"""Conversation use case: the lifecycle of one agent turn (EPIC R04)."""
"""Conversation use case: the lifecycle of one agent turn (EPIC R04) and the
tool approval policy every turn's tool calls go through (EPIC R05)."""
from .conversation_application_service import (
ConversationApplicationService,
TurnResult,
)
from .tool_policy_gateway import ConfirmGate, ToolPolicyGateway
__all__ = ["ConversationApplicationService", "TurnResult"]
__all__ = ["ConversationApplicationService", "TurnResult", "ToolPolicyGateway", "ConfirmGate"]
@@ -0,0 +1,83 @@
"""ToolPolicyGateway - one confirm/deny decision path for every tool call
(R05-T03).
Today "does this tool call need the user's OK first" is answered by a
different hand-written check per engine:
* ``core/chat_agent.py::run_cowork`` — ``name in ("run_command",
"install_package")``, a literal tuple.
* ``core/code_agent.py::run_code`` — ``name in (WRITE_TOOLS | MS365_WRITE_TOOLS)``,
a set built from two other hand-maintained sets.
* MCP/connector tools (``core/mcp_client.py``, ``core/ext_connectors.py``) —
no check at all; ``chat_agent.py`` calls ``extra_executor(name, args)``
directly.
Three answers to the same question, and the third one is a real gap: an MCP
tool that deletes files or calls an external API today runs with zero
confirmation even when the user turned "confirm before running commands" on.
This gateway answers the question from data (:class:`~domain.tools.tool_descriptor.ToolCapability`
via a :class:`~domain.tools.tool_registry.ToolRegistry`) instead of a literal
name list, so registering a tool with the right capability is what gates it -
nothing to remember at each new call site. R05-T04 is what actually registers
MCP/connector tools with a capability; this module only needs the mechanism
to exist.
Pure Python: no Qt, no direct dialog. The actual approval prompt stays exactly
what it is today - a ``gate`` object with a ``.request(payload) -> bool``
method, supplied by the presentation layer (Settings' "confirm before running
commands" wires it up, or None for auto-run) - this module only decides
WHEN to ask it, never how to render the question.
"""
from __future__ import annotations
from typing import Any, Dict, Optional, Protocol
from cowork_local.domain.tools import ToolCapability, ToolRegistry
class ConfirmGate(Protocol):
"""Shape of the existing ``PermissionGate`` both engines already use."""
def request(self, payload: Dict[str, Any]) -> bool: ...
class ToolPolicyGateway:
"""Decides whether a tool call needs approval, for ONE calling surface.
``gated_capabilities`` is what makes this per-surface: Cowork only ever
asked about ``run_command``/``install_package`` (capability ``EXECUTE``),
while the Code tab additionally confirms plain file writes (capability
``WRITE``). Passing the wrong set here would silently change which tools
prompt for approval - see the callers in ``core/chat_agent.py`` and
``core/code_agent.py`` for the exact sets that preserve today's behavior.
"""
def __init__(self, registry: ToolRegistry, gated_capabilities: ToolCapability) -> None:
self._registry = registry
self._gated_capabilities = gated_capabilities
def requires_confirmation(self, name: str) -> bool:
"""True when ``name``'s declared capabilities overlap this surface's
gated set. An unregistered tool never requires confirmation through
this path - callers that must fail safe on unknown tools check
``name in registry`` themselves (see R05-T04's MCP wrapping, which
registers every tool it exposes before any call can reach here)."""
return bool(self._registry.capabilities_for(name) & self._gated_capabilities)
def allow(self, name: str, gate: Optional[ConfirmGate], payload: Dict[str, Any]) -> bool:
"""True when the call may proceed.
``gate is None`` preserves each engine's existing "no gate wired -
auto-run" behavior; a tool outside ``gated_capabilities`` is never
asked about, matching read-only tools "never confirm" today.
``payload`` is whatever ``gate.request(...)`` already expects at that
call site (the two engines use slightly different dict shapes) - this
gateway only decides WHETHER to call it, never reshapes the payload.
"""
if gate is None or not self.requires_confirmation(name):
return True
return bool(gate.request(payload))
__all__ = ["ToolPolicyGateway", "ConfirmGate"]
+46 -10
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@@ -11,6 +11,8 @@ import re
from pathlib import Path
from typing import Any, Callable, Dict, List, Optional
from ..application.conversations.tool_policy_gateway import ToolPolicyGateway
from ..domain.tools import ToolCapability, default_registry
from ..providers.base import Provider, ToolSpec
from . import agent_roles
from . import agent_security
@@ -27,6 +29,13 @@ from .tools import TOOL_SPECS, ToolContext, _snapshot, describe_action, execute_
# Generator / helper scripts — never a final deliverable in Cowork's output.
_SCRIPT_EXTS = {".py", ".pyw", ".js", ".mjs", ".cjs", ".ts", ".sh", ".bat", ".ps1", ".rb", ".pl"}
# R05-T03/T04: replaces the literal ``name in ("run_command",
# "install_package")`` check below with a capability lookup — EXECUTE is
# exactly the capability those two (and only those two) built-in tools carry
# (see domain/tools/tool_registry.py::BUILT_IN_CAPABILITIES). Copied per-turn
# into ``turn_tool_policy`` inside run_cowork() once extra_tools are known.
_COWORK_TOOL_REGISTRY = default_registry(TOOL_SPECS)
EmitFn = Callable[[Dict[str, Any]], None]
CancelFn = Callable[[], bool]
@@ -388,6 +397,19 @@ def run_cowork(
jira=(security_config.data.get("jira") if security_config else None))
extra_tools = extra_tools or []
extra_names = {t.name for t in extra_tools}
# R05-T04: MCP servers (core/mcp_client.py) and unified connectors
# (core/ext_connectors.py) — everything that arrives here as extra_tools —
# advertise no standard risk metadata, so each is tagged with the same
# conservative default (WRITE|EXECUTE|NETWORK) domain/tools/tool_registry.py
# uses for any unclassified tool. Copying the built-in registry per turn
# (cheap - under 20 entries) rather than mutating the shared module-level
# one keeps different turns' extra_tools from leaking into each other.
from ..domain.tools import ToolDescriptor, ToolRegistry
from ..domain.tools.tool_registry import UNKNOWN_SOURCE_CAPABILITIES
_turn_registry = ToolRegistry(_COWORK_TOOL_REGISTRY.all())
for _spec in extra_tools:
_turn_registry.register(ToolDescriptor.from_spec(_spec, UNKNOWN_SOURCE_CAPABILITIES))
turn_tool_policy = ToolPolicyGateway(_turn_registry, ToolCapability.EXECUTE)
# update_plan drives the Plan panel (above Output); it produces no file.
# Built-in tools the admin disabled (Monitoring → Tools) are filtered out.
from .tools import enabled_tool_specs
@@ -489,6 +511,18 @@ def run_cowork(
preview = {"kind": "info", "title": name, "text": str(args)}
emit({"type": "tool_proposed", "id": tc_id, "name": name, "args": args,
"preview": preview})
# R05-T04: MCP/connector tools used to run with NO permission
# check at all — this is what closes that gap. Same policy,
# same gate object as the built-in tools below.
if not turn_tool_policy.allow(
name, gate, {"name": name, "args": args, "preview": preview}
):
result = {"ok": False, "output": "Rejected by user."}
emit({"type": "tool_result", "id": tc_id, "name": name,
"ok": False, "output": result["output"]})
messages.append({"role": "tool", "tool_call_id": tc_id, "name": name,
"content": result["output"]})
continue
result = extra_executor(name, args)
emit({"type": "tool_result", "id": tc_id, "name": name,
"ok": result.get("ok", False), "output": result.get("output", "")})
@@ -528,16 +562,18 @@ def run_cowork(
# Permission Management (Sandbox Security Layer) — only when a
# gate was actually supplied (Settings: "confirm before running
# commands"); None preserves the pre-existing auto-run behavior.
if gate is not None and name in ("run_command", "install_package"):
approved = gate.request({"name": name, "args": args, "preview": preview})
if not approved:
result = {"ok": False, "output": "Rejected by user."}
evt = {"type": "tool_result", "id": tc_id, "name": name,
"ok": False, "output": result["output"]}
emit(evt)
messages.append({"role": "tool", "tool_call_id": tc_id,
"name": name, "content": result["output"]})
continue
# R05-T03: gating is now capability-driven (see
# turn_tool_policy above) instead of a literal name tuple.
if not turn_tool_policy.allow(
name, gate, {"name": name, "args": args, "preview": preview}
):
result = {"ok": False, "output": "Rejected by user."}
evt = {"type": "tool_result", "id": tc_id, "name": name,
"ok": False, "output": result["output"]}
emit(evt)
messages.append({"role": "tool", "tool_call_id": tc_id,
"name": name, "content": result["output"]})
continue
if name == "save_file":
result = _do_save_file(output_dir, title, args)
+15 -4
View File
@@ -12,6 +12,8 @@ import re
from pathlib import Path
from typing import Any, Callable, Dict, List, Optional
from ..application.conversations.tool_policy_gateway import ToolPolicyGateway
from ..domain.tools import ToolCapability, ToolDescriptor, ToolRegistry
from ..providers.base import Provider
from . import agent_roles
from . import agent_security
@@ -225,6 +227,14 @@ def run_code(
# read/list ms365 tools count as "read-only, never confirm". Names are
# the MCP-qualified "ms365__*" form the agent sees (see ms365_tools.py).
gated_tools = WRITE_TOOLS | MS365_WRITE_TOOLS
# R05-T03/T04: ``gated_tools`` stays the authoritative name set (unchanged),
# but the actual confirm decision now goes through the same
# ToolPolicyGateway class run_cowork uses, instead of a separate
# hand-rolled ``if name in gated_tools`` + direct ``gate.request(...)``.
code_tool_policy = ToolPolicyGateway(
ToolRegistry(ToolDescriptor(n, "", {}, ToolCapability.WRITE) for n in gated_tools),
ToolCapability.WRITE,
)
# In PLAN mode, don't advertise write/run tools (analysis only).
advertised = [t for t in all_tools if t.name not in gated_tools] if plan else all_tools
has_memory = any(t.name.startswith("cmem_") for t in extra_tools)
@@ -297,10 +307,11 @@ def run_code(
agent_security.enforce_command(provider, name, args, security_config, emit,
agent_kind="code")
if name in gated_tools:
approved = gate.request({"id": tc_id, "name": name, "args": args, "preview": preview})
else:
approved = True # read-only tools (incl. codebase memory) never confirm
# read-only tools (incl. codebase memory) never consult the gate —
# code_tool_policy.requires_confirmation(name) is False for them.
approved = code_tool_policy.allow(
name, gate, {"id": tc_id, "name": name, "args": args, "preview": preview}
)
if cancel():
return messages
+7
View File
@@ -106,6 +106,13 @@ class McpServerConnection:
if self._thread is not None:
self._thread.join(timeout=5)
def is_alive(self) -> bool:
"""True while the connection's background thread (and therefore its
event loop and subprocess) is still running — used by
``infrastructure/mcp/mcp_source_manager.py`` (R05-T05) to tell a live
cached connection from one whose subprocess already died."""
return self._thread is not None and self._thread.is_alive()
# ---- tools -----------------------------------------------------------
def list_tool_specs(self) -> List[ToolSpec]:
"""The server's tools, wrapped as :class:`ToolSpec` — the same shape
+38 -312
View File
@@ -3,79 +3,29 @@
Every path is resolved relative to the working directory and must stay inside
it (path-traversal is rejected). ``run_command`` executes inside the workdir
with a timeout and captured output.
R05-T02: the actual handlers (``read_file``/``list_dir``/``write_file``/
``edit_file``/``run_command``/``install_package``/``fetch_url``/
``jira_search``/``jira_get_issue``) now live in
``infrastructure/filesystem/{file_tools,command_tools,fetch_tools}.py``, split
out of what used to be one big if/elif chain here. This module is the
strangler-fig shim (ADR-001 section 4): it re-exports ``ToolContext``/
``ToolError`` (actually defined in
``infrastructure/filesystem/tool_context.py`` now) so every existing
``from .tools import ToolContext`` keeps working, and ``execute_tool``
dispatches through a small ``{name: handler}`` table built from the moved
modules instead of the chain itself.
"""
from __future__ import annotations
import ast
import difflib
import os
from dataclasses import dataclass
from pathlib import Path
from typing import Any, Callable, Dict, List, Optional
from ..infrastructure.filesystem import command_tools, fetch_tools, file_tools
from ..infrastructure.filesystem.command_tools import _snapshot # noqa: F401 - re-export, core/chat_agent.py imports this name
from ..infrastructure.filesystem.tool_context import CancelFn, ToolContext, ToolError # noqa: F401 - re-export
from ..providers.base import ToolSpec
CancelFn = Callable[[], bool]
MAX_READ_BYTES = 200_000
COMMAND_TIMEOUT = 120 # seconds
class ToolError(Exception):
pass
def _flatten_rel(rel: str) -> str:
"""Collapse a sub-folder path down to a bare filename so the file lands in the
workdir root — EXCEPT the ``.scratch`` sandbox subtree, which is preserved.
Used by the Cowork agent (flatten_writes=True) so it can never create a
per-session / per-chat / per-task output sub-folder: every deliverable stays
directly in the single configured Output folder."""
parts = Path(rel).parts
if parts and parts[0] == ".scratch":
return rel # temporary sandbox is allowed (and cleaned up afterwards)
return Path(rel).name or rel
@dataclass
class ToolContext:
workdir: Path
flatten_writes: bool = False # Cowork: force every write into the workdir root
sandbox: bool = False # Code tab: isolate run_command/install_package into <workdir>/.venv
# Sandbox Security Layer — Settings' "Resource Limits" (cpu_percent/memory_mb/
# disk_mb), applied to every run_command/install_package this context runs.
# None (default) = no limits, matching pre-existing behavior.
resource_limits: Optional[Dict[str, float]] = None
# Sandbox Security Layer — Settings' "Block network for agent commands"
# (policy-level, see deps.py::network_blocked_env). False (default) =
# unrestricted, matching pre-existing behavior.
block_network: bool = False
# Whether the fetch_url tool may read URLs — SEPARATE from block_network
# (reading a web page/share link for info is safe; running networked shell
# commands is the risk). Defaults True; set from agent_security.allow_url_fetch.
allow_url_fetch: bool = True
# Jira read connector config (base_url/email/api_token) — None disables the
# jira_* tools' ability to connect. Populated from config.data["jira"].
jira: Optional[Dict[str, Any]] = None
def resolve(self, rel: str) -> Path:
"""Resolve ``rel`` inside the workdir, rejecting escapes."""
if rel in ("", "."):
return self.workdir
candidate = (self.workdir / rel).expanduser()
try:
resolved = candidate.resolve()
except OSError as exc:
raise ToolError(f"Invalid path: {rel} ({exc})")
root = self.workdir.resolve()
if resolved != root and root not in resolved.parents:
raise ToolError(
f"Refused: '{rel}' is outside the working folder ({root})."
)
return resolved
# --------------------------------------------------------------------------
# Tool specs advertised to the model
# --------------------------------------------------------------------------
@@ -192,6 +142,23 @@ TOOL_SPECS: List[ToolSpec] = [
# Actions gated by the permission gate in confirm mode (auto-approved in Auto-run).
WRITE_TOOLS = {"write_file", "edit_file", "run_command", "install_package"}
# name -> handler(ctx, args[, cancel, on_output]) — built once from the split
# infrastructure modules. Replaces the if/elif chain execute_tool used to be.
_HANDLERS: Dict[str, Callable[..., Dict[str, Any]]] = {
"read_file": file_tools.read_file,
"list_dir": file_tools.list_dir,
"write_file": file_tools.write_file,
"edit_file": file_tools.edit_file,
"run_command": command_tools.run_command,
"install_package": command_tools.install_package,
"fetch_url": fetch_tools.fetch_url,
"jira_search": fetch_tools.jira_search,
"jira_get_issue": fetch_tools.jira_get_issue,
}
# Handlers that accept the long-running (cancel, on_output) signature — every
# other handler takes just (ctx, args).
_CANCELLABLE = {"run_command", "install_package"}
def enabled_tool_specs(security_config=None) -> List[ToolSpec]:
"""The built-in TOOL_SPECS minus any the admin turned OFF in Monitoring →
@@ -301,27 +268,14 @@ def execute_tool(ctx: ToolContext, name: str, args: Dict[str, Any],
labels WHICH agent role made it."""
from . import audit_log
handler = _HANDLERS.get(name)
try:
if name == "read_file":
result = _read_file(ctx, args)
elif name == "list_dir":
result = _list_dir(ctx, args)
elif name == "write_file":
result = _write_file(ctx, args)
elif name == "edit_file":
result = _edit_file(ctx, args)
elif name == "run_command":
result = _run_command(ctx, args, cancel, on_output)
elif name == "install_package":
result = _install_package(ctx, args, cancel, on_output)
elif name == "fetch_url":
result = _fetch_url(ctx, args)
elif name == "jira_search":
result = _jira_search(ctx, args)
elif name == "jira_get_issue":
result = _jira_get_issue(ctx, args)
else:
if handler is None:
result = {"ok": False, "output": f"Tool not found: {name}"}
elif name in _CANCELLABLE:
result = handler(ctx, args, cancel, on_output)
else:
result = handler(ctx, args)
except ToolError as exc:
result = {"ok": False, "output": str(exc)}
except Exception as exc: # defensive: a tool must never crash the agent
@@ -331,234 +285,6 @@ def execute_tool(ctx: ToolContext, name: str, args: Dict[str, Any],
return result
def _fetch_url(ctx: ToolContext, args: Dict[str, Any]) -> Dict[str, Any]:
"""Fetch a URL's text content (web page / online document / SharePoint-
OneDrive share link) via link_fetch — the same parser task-link attachments
use. Honors the Sandbox Security Layer's "Block network" policy."""
url = str(args.get("url", "")).strip()
if not url:
return {"ok": False, "output": "fetch_url: 'url' is required."}
if not url.lower().startswith(("http://", "https://")):
return {"ok": False, "output": f"fetch_url: not an http(s) URL: {url}"}
if not ctx.allow_url_fetch:
return {"ok": False,
"output": ("fetch_url: URL fetching is turned off in Settings → Security "
"(\"Allow the agent to fetch URLs\").")}
# A pasted Jira issue link on the CONNECTED Jira host is read via the
# authenticated API (so private issues resolve, not a login page). Public
# links / any other URL fall through to the normal fetcher below.
from . import jira_tool
if jira_tool.is_jira_issue_url(ctx.jira, url):
return {"ok": True, "output": jira_tool.get_issue_by_url(ctx.jira, url)}
from .link_fetch import fetch_link_preview
return {"ok": True, "output": fetch_link_preview(url)}
def _jira_search(ctx: ToolContext, args: Dict[str, Any]) -> Dict[str, Any]:
from . import jira_tool
out = jira_tool.search(ctx.jira, str(args.get("jql", "")),
int(args.get("max_results", 25) or 25))
return {"ok": not out.lower().startswith(("jira is not configured", "jira search failed")),
"output": out}
def _jira_get_issue(ctx: ToolContext, args: Dict[str, Any]) -> Dict[str, Any]:
from . import jira_tool
out = jira_tool.get_issue(ctx.jira, str(args.get("key", "")))
return {"ok": not out.lower().startswith(("jira is not configured", "could not fetch")),
"output": out}
def _read_file(ctx: ToolContext, args: Dict[str, Any]) -> Dict[str, Any]:
target = ctx.resolve(str(args.get("path", "")))
if not target.exists():
return {"ok": False, "output": f"File not found: {args.get('path')}"}
data = target.read_bytes()[:MAX_READ_BYTES]
text = data.decode("utf-8", errors="replace")
return {"ok": True, "output": text}
def _list_dir(ctx: ToolContext, args: Dict[str, Any]) -> Dict[str, Any]:
rel = str(args.get("path", ".") or ".")
target = ctx.resolve(rel)
# A missing/not-yet-created path is NOT a tool failure — report it as an
# ordinary result so the agent can create it or pick another path and keep
# going. Returning ok=False here surfaced a false "tool failed: list_dir" in
# Co4E flows and could stall a step on a recoverable situation.
if not target.exists():
return {"ok": True, "output": f"(path '{rel}' does not exist yet — create it or use another path)"}
if target.is_file():
return {"ok": True, "output": f"('{rel}' is a file, not a directory)"}
entries = []
for child in sorted(target.iterdir(), key=lambda p: (p.is_file(), p.name.lower())):
marker = "/" if child.is_dir() else ""
entries.append(f"{child.name}{marker}")
return {"ok": True, "output": "\n".join(entries) or "(empty folder)"}
def _check_python_syntax(target: Path, content: str) -> str:
"""Return a short warning if ``content`` is invalid Python, else ''.
Catches syntax errors the instant a .py file is written/edited — before the
agent wastes a whole run_command round-trip just to get the same error back
from a traceback."""
if target.suffix.lower() not in (".py", ".pyw"):
return ""
try:
ast.parse(content, filename=str(target))
return ""
except SyntaxError as exc:
return f"\n⚠ Syntax error at line {exc.lineno}: {exc.msg} — fix this before running the file."
def _write_file(ctx: ToolContext, args: Dict[str, Any]) -> Dict[str, Any]:
rel = str(args.get("path", ""))
if ctx.flatten_writes:
rel = _flatten_rel(rel)
target = ctx.resolve(rel)
content = str(args.get("content", ""))
target.parent.mkdir(parents=True, exist_ok=True)
# A .xlsx is a binary package — build a REAL workbook from the content
# (CSV/TSV/Markdown-table/JSON) rather than writing raw text (which corrupts it).
if target.suffix.lower() in (".xlsx", ".xlsm"):
from . import xlsx_write
if xlsx_write.build_xlsx_from_text(target, content):
return {"ok": True, "path": str(target),
"output": f"Wrote spreadsheet {rel} ({target.name})."}
return {"ok": False, "output": "Could not build the .xlsx (openpyxl unavailable) — "
"write a .csv instead, or use a generator script."}
target.write_text(content, encoding="utf-8")
warning = _check_python_syntax(target, content)
return {"ok": True, "path": str(target),
"output": f"Wrote {len(content)} chars to {rel}.{warning}"}
def _edit_file(ctx: ToolContext, args: Dict[str, Any]) -> Dict[str, Any]:
"""Replace an exact snippet inside an existing file (precise patch edit)."""
rel = str(args.get("path", ""))
if ctx.flatten_writes:
rel = _flatten_rel(rel)
target = ctx.resolve(rel)
if not target.exists():
return {"ok": False,
"output": f"File not found: {rel} — use write_file to create it."}
old = str(args.get("old_string", ""))
new = str(args.get("new_string", ""))
replace_all = bool(args.get("replace_all", False))
if not old:
return {"ok": False, "output": "old_string is empty — provide the exact text to replace."}
try:
text = target.read_text(encoding="utf-8", errors="replace")
except OSError as exc:
return {"ok": False, "output": f"Could not read file: {exc}"}
count = text.count(old)
if count == 0:
return {"ok": False, "output": ("old_string not found. Read the file and copy the exact "
"text to replace, including indentation/whitespace.")}
if count > 1 and not replace_all:
return {"ok": False, "output": (f"old_string appears {count} times — add surrounding "
"context to make it unique, or set replace_all=true.")}
updated = text.replace(old, new) if replace_all else text.replace(old, new, 1)
target.write_text(updated, encoding="utf-8")
n = count if replace_all else 1
warning = _check_python_syntax(target, updated)
return {"ok": True,
"output": f"Edited {args.get('path')} ({n} replacement{'' if n == 1 else 's'}).{warning}"}
def _sandbox_python(ctx: ToolContext, cancel: Optional[CancelFn] = None,
on_output: Optional[Callable[[str], None]] = None) -> Optional[str]:
"""Lazily create/reuse this ctx's project sandbox venv (Code tab only —
``ctx.sandbox``); returns its python path, or None to use the app's own."""
if not ctx.sandbox:
return None
from .deps import ensure_project_venv
py = ensure_project_venv(ctx.workdir, cancel=cancel, on_output=on_output)
return str(py) if py else None
def _install_package(ctx: ToolContext, args: Dict[str, Any], cancel: Optional[CancelFn] = None,
on_output: Optional[Callable[[str], None]] = None) -> Dict[str, Any]:
from .deps import pip_install
package = str(args.get("package", "")).strip()
if not package:
return {"ok": False, "output": "No package specified."}
python = _sandbox_python(ctx, cancel, on_output)
ok, detail = pip_install(package, cancel=cancel, on_output=on_output, python=python)
head = f"Installed {package}." if ok else f"Could not install {package}."
return {"ok": ok, "output": f"{head}\n{detail}"}
_SNAPSHOT_SKIP = {".git", "__pycache__", "node_modules", ".scratch", ".venv",
".idea", ".mypy_cache", ".pytest_cache"}
def _snapshot(workdir: Path) -> Dict[str, Any]:
"""Map of file path -> (mtime, size) under the workdir (noise dirs skipped)."""
snap: Dict[str, Any] = {}
try:
for dirpath, dirnames, filenames in os.walk(str(workdir)):
dirnames[:] = [d for d in dirnames if d not in _SNAPSHOT_SKIP]
for fn in filenames:
full = os.path.join(dirpath, fn)
try:
st = os.stat(full)
snap[full] = (st.st_mtime_ns, st.st_size)
except OSError:
pass
if len(snap) > 5000:
return snap
except OSError:
pass
return snap
def _run_command(ctx: ToolContext, args: Dict[str, Any],
cancel: Optional[CancelFn] = None,
on_output: Optional[Callable[[str], None]] = None) -> Dict[str, Any]:
from .deps import network_blocked_env, run_cancellable, sandbox_env
from .sandbox_manager import SandboxManager, ExecutionConfig
from ..security.command_risk_classifier import classify_command
command = str(args.get("command", "")).strip()
if not command:
return {"ok": False, "output": "Empty command."}
# --- Security validation pipeline ---
risk = classify_command(command, is_cowork_mode=ctx.flatten_writes)
if risk.blocked:
denial = "Command blocked by security policy: " + "; ".join(risk.reasons)
return {"ok": False, "output": denial}
# Route through SandboxManager for risk-based isolation
mgr = SandboxManager(ExecutionConfig(
enabled=True,
block_network_by_default=ctx.block_network,
is_cowork_mode=ctx.flatten_writes,
))
sandbox_result = mgr.run(
command=command,
workdir=str(ctx.workdir),
block_network=ctx.block_network,
timeout_sec=COMMAND_TIMEOUT,
cancel=cancel,
)
# Sandbox ALWAYS executes (never double-run). Return its result directly.
if sandbox_result.get("sandbox") == "blocked":
return {"ok": False, "output": sandbox_result.get("stderr", "Command blocked")}
out = sandbox_result.get("stdout", "").strip() or "(no output)"
err = sandbox_result.get("stderr", "")
rc = sandbox_result.get("returncode", -1)
if err:
out = f"{out}\n{err}" if out else err
return {"ok": sandbox_result.get("ok", False), "output": f"[exit {rc}]\n{out}"}
def _short_json(obj: Any, limit: int = 500) -> str:
import json
text = json.dumps(obj, ensure_ascii=False, indent=2)
+38 -10
View File
@@ -57,6 +57,34 @@
---
## 📊 TIẾN ĐỘ THỰC TẾ — TEAM HOA (cập nhật `2026-08-21 22:19`)
> [!NOTE]
> ### ✅ ĐÃ HOÀN TẤT: 5/5 task của **R05** — branch `feature/teamhoa/r05-r06` (tạo từ `origin/feature/deltateam/refactor-plan`, có sẵn nền R01/R03/R04)
>
> | EPIC | Task | Trạng thái |
> | :--- | :--- | :--- |
> | **R05** Tool, MCP & Connector Policy | T01 → T05 | ✅ 5/5 |
> | **R06** Workspace, Filesystem & History Isolation | T01 → T05 | ⬜ chưa bắt đầu |
>
> **Kiểm chứng (chạy thật):**
> * `pytest tests/` ➔ **254 pass / 4 fail** (+12 test mới cho R05: `tests/unit/test_tool_registry_and_policy.py`, `test_code_agent_tool_policy.py`, `test_cowork_extra_tool_policy.py`, `test_mcp_source_manager.py`)
> * 4 fail là **lỗi có sẵn từ trước R05**, không liên quan tool/MCP: 2 trong `test_config_security.py` (EPIC R02, đã ghi nhận bởi Team Duy) + 2 trong `test_routing_wiring.py` (môi trường máy này có Ollama/llama3.1 thật + config routing cục bộ khác "fresh install" — không phải do R05).
> * `python scripts/check_imports.py` ➔ **PASS** (0 Qt import trong `domain/`, `application/`)
> * Mọi file mới **< 400 dòng** (lớn nhất: `domain/tools/tool_registry.py` 125 dòng). `core/tools.py` giảm từ 566 ➔ 291 dòng.
>
> ### 🔧 TÓM TẮT R05
> * **R05-T01/T02**: `core/tools.py`'s if/elif dispatcher tách thành `infrastructure/filesystem/{file_tools,command_tools,fetch_tools,tool_context}.py` + `domain/tools/{tool_descriptor,tool_registry}.py`. `core/tools.py` còn lại là shim strangler-fig (re-export `ToolContext`/`ToolError`, dispatch qua dict).
> * **R05-T03**: `application/conversations/tool_policy_gateway.py::ToolPolicyGateway` — thay `if gate is not None and name in ("run_command","install_package")` (chat_agent.py) và `if name in (WRITE_TOOLS|MS365_WRITE_TOOLS)` (code_agent.py) bằng một lookup capability chung. Đã verify bằng test: đúng 2 tool cũ vẫn được gate, không tool nào khác bị ảnh hưởng.
> * **R05-T04 — ⚠️ THAY ĐỔI HÀNH VI CÓ CHỦ ĐÍCH**: trước đây MCP/connector/ext-connector tools (`core/mcp_client.py`, `core/ext_connectors.py`) chạy qua `extra_executor(name, args)` **không hề qua permission gate**. Giờ mọi `extra_tools` được gắn capability mặc định (`WRITE|EXECUTE|NETWORK`, vì MCP không có chuẩn khai báo rủi ro) và đi qua CÙNG `ToolPolicyGateway` như built-in tools. Khi Settings có "confirm before running commands" bật, tool MCP/connector giờ sẽ hỏi xác nhận — người dùng SẼ thấy thêm prompt so với trước. Test: `tests/unit/test_cowork_extra_tool_policy.py`.
> * **R05-T05**: `infrastructure/mcp/mcp_source_manager.py::McpToolSourceManager` — tách lifecycle connection (cache/lock/start-or-skip) ra khỏi `state.py::AppContext` (trước đây inline trong `_mcp_connections`/`_conn_lock`). `AppContext` giờ chỉ gọi `self._mcp_manager.ensure/stop/stop_all`. `_ext_connections` (Connectors CAD/CAE/MS365/Other) KHÔNG thuộc phạm vi T05, vẫn giữ `_conn_lock` riêng như cũ.
>
> ### 📌 CÒN NỢ / CẦN QUYẾT ĐỊNH
> 1. **Xung đột file với EPIC R02 (Team Nam)**: `docs/refactor/Refactoring_Checklist.md` dòng ~83 giao `infrastructure/persistence/json/atomic_json_file.py` cho Team Nam (R02-T01). R06-T02 (Team Hoa) cũng cần một helper ghi JSON atomic cho `WorkspaceRepository`/`ConversationRepository`. Để tránh 2 team cùng sửa 1 file, R06 sẽ dùng một helper atomic-write cục bộ trong `infrastructure/persistence/json/workspace_repository_impl.py`/`conversation_repository_impl.py` cho tới khi R02 xong, rồi hợp nhất vào `atomic_json_file.py` chung — **cần Team Nam xác nhận** khi họ bắt đầu R02-T01.
> 2. Việc kế tiếp của Team Hoa là **R06** (Workspace, Filesystem & History Isolation).
---
## 📌 PHẦN 1: CHECKLIST CHI TIẾT THEO 10 EPIC (R01 ➔ R10)
### 🔹 EPIC R01: Architecture Foundation & Characterization (Nền Tảng Kiến Trúc & Test Bảo Vệ)
@@ -135,16 +163,16 @@
* **Team chịu trách nhiệm**: 🟢 **Team Hoa** (Chủ trì) + Phối hợp Team Duy
* **Mục tiêu**: Bóc tách monolithic `core/tools.py`, đưa toàn bộ Built-in tools, MCP tools và Connectors qua `ToolPolicyGateway` kiểm tra quyền phân tầng.
- [ ] **R05-T01 (Team Hoa)**: Định nghĩa `ToolDescriptor`, `ToolCapability` (read/write/execute/network) ➔ `domain/tools/tool_descriptor.py` & `domain/tools/tool_registry.py`
*Start: `____-__-__ __:__` | End: `____-__-__ __:__`*
- [ ] **R05-T02 (Team Hoa)**: Tách nhỏ các built-in handlers từ `core/tools.py` ➔ `infrastructure/filesystem/file_tools.py`, `command_tools.py`, `fetch_tools.py`
*Start: `____-__-__ __:__` | End: `____-__-__ __:__`*
- [ ] **R05-T03 (Team Hoa)**: Xây dựng `ToolPolicyGateway` (kiểm tra phân quyền allow/confirm/deny) ➔ `application/conversations/tool_policy_gateway.py`
*Start: `____-__-__ __:__` | End: `____-__-__ __:__`*
- [ ] **R05-T04 (Team Hoa)**: Chuẩn hóa MCP tools từ `core/mcp_client.py` đi qua `ToolPolicyGateway`
*Start: `____-__-__ __:__` | End: `____-__-__ __:__`*
- [ ] **R05-T05 (Team Hoa)**: Xây dựng `McpToolSourceManager` quản lý vòng đời tiến trình MCP ➔ `infrastructure/mcp/mcp_source_manager.py`
*Start: `____-__-__ __:__` | End: `____-__-__ __:__`*
- [x] **R05-T01 (Team Hoa)**: Định nghĩa `ToolDescriptor`, `ToolCapability` (read/write/execute/network) ➔ `domain/tools/tool_descriptor.py` & `domain/tools/tool_registry.py`
*Start: `2026-08-21 21:40` | End: `2026-08-21 21:47`*
- [x] **R05-T02 (Team Hoa)**: Tách nhỏ các built-in handlers từ `core/tools.py` ➔ `infrastructure/filesystem/file_tools.py`, `command_tools.py`, `fetch_tools.py`
*Start: `2026-08-21 21:47` | End: `2026-08-21 21:56`*
- [x] **R05-T03 (Team Hoa)**: Xây dựng `ToolPolicyGateway` (kiểm tra phân quyền allow/confirm/deny) ➔ `application/conversations/tool_policy_gateway.py`
*Start: `2026-08-21 21:56` | End: `2026-08-21 22:04`*
- [x] **R05-T04 (Team Hoa)**: Chuẩn hóa MCP tools từ `core/mcp_client.py` đi qua `ToolPolicyGateway`
*Start: `2026-08-21 22:04` | End: `2026-08-21 22:12`*
- [x] **R05-T05 (Team Hoa)**: Xây dựng `McpToolSourceManager` quản lý vòng đời tiến trình MCP ➔ `infrastructure/mcp/mcp_source_manager.py`
*Start: `2026-08-21 22:12` | End: `2026-08-21 22:19`*
---
+18
View File
@@ -0,0 +1,18 @@
"""Domain entities for tool risk classification and lookup (EPIC R05)."""
from .tool_descriptor import ToolCapability, ToolDescriptor
from .tool_registry import (
BUILT_IN_CAPABILITIES,
UNKNOWN_SOURCE_CAPABILITIES,
ToolRegistry,
default_registry,
)
__all__ = [
"ToolCapability",
"ToolDescriptor",
"ToolRegistry",
"BUILT_IN_CAPABILITIES",
"UNKNOWN_SOURCE_CAPABILITIES",
"default_registry",
]
+86
View File
@@ -0,0 +1,86 @@
"""ToolCapability / ToolDescriptor - the risk-tagged catalogue entry for one
tool the agent loop can call (R05-T01).
Today a tool is just a name inside ``core/tools.py::TOOL_SPECS`` (a
``providers.base.ToolSpec`` — name/description/JSON-schema parameters, with
no notion of risk) plus a hand-written membership test wherever gating is
needed: ``core/tools.py::WRITE_TOOLS``, ``core/code_agent.py``'s
``WRITE_TOOLS | MS365_WRITE_TOOLS``, and ``core/chat_agent.py``'s literal
``name in ("run_command", "install_package")``. Three call sites, three
independently-maintained lists, and a new tool (or an MCP/connector tool,
which has no list membership at all - see ``core/mcp_client.py``) is gated
only if someone remembers to add it everywhere.
``ToolDescriptor`` makes the risk an attribute of the tool itself, declared
once, so ``application/conversations/tool_policy_gateway.py`` (R05-T03) can
decide ALLOW/CONFIRM/DENY from data instead of a growing set of literal
tuples.
Pure domain code: stdlib only, no Qt, no I/O. ``to_spec``/``from_spec`` are
the only place this module touches something outside domain/, and that
something (``providers.base.ToolSpec``) is itself a plain dataclass with no
further dependencies.
"""
from __future__ import annotations
from dataclasses import dataclass, field
from enum import Flag, auto
from typing import Any, Dict
from cowork_local.providers.base import ToolSpec
class ToolCapability(Flag):
"""What calling a tool can do to the machine or the network.
A ``Flag`` (not a plain ``Enum``) because a single tool can combine risks
- ``install_package`` writes to the environment, runs pip as a
subprocess, AND needs network access. Composing three separate booleans
per call site is exactly the duplication this type replaces.
"""
NONE = 0
READ = auto()
WRITE = auto()
EXECUTE = auto()
NETWORK = auto()
@dataclass(frozen=True)
class ToolDescriptor:
"""An immutable description of one callable tool.
Attributes:
name: the identifier the model calls (``ToolSpec.name``).
description: shown to the model, unchanged from ``ToolSpec``.
parameters: JSON-Schema object for the call's arguments.
capabilities: the risk this tool carries - see :class:`ToolCapability`.
"""
name: str
description: str
parameters: Dict[str, Any] = field(default_factory=dict)
capabilities: ToolCapability = ToolCapability.NONE
def has(self, capability: ToolCapability) -> bool:
"""True when this tool carries (any bit of) ``capability``."""
return bool(self.capabilities & capability)
def to_spec(self) -> ToolSpec:
"""Project back to the ``ToolSpec`` shape the model-facing catalogue
and the provider call actually use - risk tagging is metadata the
wire format has no room for."""
return ToolSpec(name=self.name, description=self.description,
parameters=self.parameters)
@classmethod
def from_spec(cls, spec: ToolSpec,
capabilities: ToolCapability = ToolCapability.NONE) -> "ToolDescriptor":
"""Wrap an existing ``ToolSpec`` (built-in, MCP, or connector) with a
capability tag. The one place callers attach risk to a spec they did
not author themselves."""
return cls(name=spec.name, description=spec.description,
parameters=spec.parameters, capabilities=capabilities)
__all__ = ["ToolCapability", "ToolDescriptor"]
+125
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@@ -0,0 +1,125 @@
"""ToolRegistry - the centralised catalogue every tool source registers into
(R05-T01).
Built-in file/command/fetch tools (``core/tools.py``), MCP server tools
(``core/mcp_client.py``) and unified connectors (``core/ext_connectors.py``)
each produce their own ``List[ToolSpec]`` today, concatenated ad-hoc by
``core/tools.py::combine_tool_sources``. None of that concatenation carries
risk information, which is exactly why an MCP tool call reaches
``core/chat_agent.py`` with no ``ToolDescriptor`` to consult and skips the
permission gate entirely (the gap R05-T04 closes).
``ToolRegistry`` is the one place a :class:`~domain.tools.tool_descriptor.ToolDescriptor`
is looked up by name, so a policy gateway - or anything else that needs to ask
"what can this tool do" - has a single source of truth instead of re-deriving
it from a spec list.
Pure domain code: stdlib only, no Qt, no I/O.
"""
from __future__ import annotations
from typing import Dict, Iterable, List, Optional
from cowork_local.providers.base import ToolSpec
from .tool_descriptor import ToolCapability, ToolDescriptor
class ToolRegistry:
"""An in-memory, name-keyed catalogue of :class:`ToolDescriptor`.
Deliberately mutable and unordered-by-name-only: a turn builds one
registry from whichever tool sources it has (built-ins + whatever MCP
servers/connectors are enabled), so re-registering the same name simply
replaces the previous descriptor rather than raising - the same
"last one wins" behaviour ``combine_tool_sources`` already has for
duplicate tool names across sources.
"""
def __init__(self, descriptors: Optional[Iterable[ToolDescriptor]] = None) -> None:
self._by_name: Dict[str, ToolDescriptor] = {}
for descriptor in descriptors or ():
self.register(descriptor)
def register(self, descriptor: ToolDescriptor) -> None:
self._by_name[descriptor.name] = descriptor
def get(self, name: str) -> Optional[ToolDescriptor]:
return self._by_name.get(name)
def all(self) -> List[ToolDescriptor]:
return list(self._by_name.values())
def specs(self) -> List[ToolSpec]:
"""Every registered descriptor, projected back to ``ToolSpec`` - the
shape the provider call and the model-facing catalogue need."""
return [d.to_spec() for d in self._by_name.values()]
def capabilities_for(self, name: str) -> ToolCapability:
"""The capability set for ``name``, or ``NONE`` for an unknown tool.
Returning ``NONE`` rather than raising lets a policy gateway treat an
unregistered tool the same way as one with no declared risk - the
gateway's DENY-on-unknown-name rule is a deliberate, separate check,
not something this lookup should pre-empt.
"""
descriptor = self._by_name.get(name)
return descriptor.capabilities if descriptor is not None else ToolCapability.NONE
def __contains__(self, name: str) -> bool:
return name in self._by_name
def __len__(self) -> int:
return len(self._by_name)
# --------------------------------------------------------------------------- #
# Default capability map for this app's built-in tools (core/tools.py).
# Kept here, next to the registry, rather than inside core/tools.py itself -
# core/ is the legacy engine layer being strangled, not where new domain facts
# should accumulate.
# --------------------------------------------------------------------------- #
_CAP = ToolCapability
BUILT_IN_CAPABILITIES: Dict[str, ToolCapability] = {
"read_file": _CAP.READ,
"list_dir": _CAP.READ,
"write_file": _CAP.WRITE,
"edit_file": _CAP.WRITE,
"run_command": _CAP.EXECUTE,
"install_package": _CAP.WRITE | _CAP.EXECUTE | _CAP.NETWORK,
"fetch_url": _CAP.NETWORK,
"jira_search": _CAP.NETWORK,
"jira_get_issue": _CAP.NETWORK,
# Advertised by every engine but has no filesystem/process/network effect
# of its own - it only drives the Plan panel (see core/chat_agent.py).
"update_plan": _CAP.NONE,
"save_file": _CAP.WRITE,
}
# Tools with no standard, self-declared risk metadata (every MCP server tool,
# every unified connector) are tagged with this conservative default - see
# R05-T04. Better to over-gate an unknown remote tool than to silently let it
# through as READ-only.
UNKNOWN_SOURCE_CAPABILITIES: ToolCapability = _CAP.WRITE | _CAP.EXECUTE | _CAP.NETWORK
def default_registry(specs: Iterable[ToolSpec]) -> ToolRegistry:
"""Build a registry from ``core/tools.py``'s own ``TOOL_SPECS`` (plus
``save_file``/``update_plan``, which the engines add separately), using
:data:`BUILT_IN_CAPABILITIES`. A spec with no entry in that map falls back
to :data:`UNKNOWN_SOURCE_CAPABILITIES` - the same conservative default
applied to MCP/connector tools, so a built-in nobody has classified yet
fails safe instead of silently ungated."""
registry = ToolRegistry()
for spec in specs:
capability = BUILT_IN_CAPABILITIES.get(spec.name, UNKNOWN_SOURCE_CAPABILITIES)
registry.register(ToolDescriptor.from_spec(spec, capability))
return registry
__all__ = [
"ToolRegistry",
"BUILT_IN_CAPABILITIES",
"UNKNOWN_SOURCE_CAPABILITIES",
"default_registry",
]
+6
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@@ -0,0 +1,6 @@
"""Filesystem/process/network tool adapters split out of ``core/tools.py``
(EPIC R05) and the sandbox execution context they share."""
from .tool_context import CancelFn, ToolContext, ToolError
__all__ = ["CancelFn", "ToolContext", "ToolError"]
+110
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@@ -0,0 +1,110 @@
"""Command tools - run_command, install_package (R05-T02).
Moved verbatim out of ``core/tools.py`` (see ``file_tools.py`` for why). These
two are the ones today's hand-written permission gate in
``core/chat_agent.py`` singles out by literal name
(``name in ("run_command", "install_package")``) — R05-T03 replaces that
tuple with a capability lookup, but the tools themselves are unchanged here.
"""
from __future__ import annotations
import os
from pathlib import Path
from typing import Any, Dict, Optional
from .tool_context import CancelFn, ToolContext
COMMAND_TIMEOUT = 120 # seconds
_SNAPSHOT_SKIP = {".git", "__pycache__", "node_modules", ".scratch", ".venv",
".idea", ".mypy_cache", ".pytest_cache"}
def _snapshot(workdir: Path) -> Dict[str, Any]:
"""Map of file path -> (mtime, size) under the workdir (noise dirs skipped)."""
snap: Dict[str, Any] = {}
try:
for dirpath, dirnames, filenames in os.walk(str(workdir)):
dirnames[:] = [d for d in dirnames if d not in _SNAPSHOT_SKIP]
for fn in filenames:
full = os.path.join(dirpath, fn)
try:
st = os.stat(full)
snap[full] = (st.st_mtime_ns, st.st_size)
except OSError:
pass
if len(snap) > 5000:
return snap
except OSError:
pass
return snap
def _sandbox_python(ctx: ToolContext, cancel: Optional[CancelFn] = None,
on_output=None) -> Optional[str]:
"""Lazily create/reuse this ctx's project sandbox venv (Code tab only —
``ctx.sandbox``); returns its python path, or None to use the app's own."""
if not ctx.sandbox:
return None
from cowork_local.core.deps import ensure_project_venv
py = ensure_project_venv(ctx.workdir, cancel=cancel, on_output=on_output)
return str(py) if py else None
def run_command(ctx: ToolContext, args: Dict[str, Any],
cancel: Optional[CancelFn] = None,
on_output=None) -> Dict[str, Any]:
from cowork_local.core.deps import network_blocked_env, run_cancellable, sandbox_env
from cowork_local.core.sandbox_manager import ExecutionConfig, SandboxManager
from cowork_local.security.command_risk_classifier import classify_command
command = str(args.get("command", "")).strip()
if not command:
return {"ok": False, "output": "Empty command."}
# --- Security validation pipeline ---
risk = classify_command(command, is_cowork_mode=ctx.flatten_writes)
if risk.blocked:
denial = "Command blocked by security policy: " + "; ".join(risk.reasons)
return {"ok": False, "output": denial}
# Route through SandboxManager for risk-based isolation
mgr = SandboxManager(ExecutionConfig(
enabled=True,
block_network_by_default=ctx.block_network,
is_cowork_mode=ctx.flatten_writes,
))
sandbox_result = mgr.run(
command=command,
workdir=str(ctx.workdir),
block_network=ctx.block_network,
timeout_sec=COMMAND_TIMEOUT,
cancel=cancel,
)
# Sandbox ALWAYS executes (never double-run). Return its result directly.
if sandbox_result.get("sandbox") == "blocked":
return {"ok": False, "output": sandbox_result.get("stderr", "Command blocked")}
out = sandbox_result.get("stdout", "").strip() or "(no output)"
err = sandbox_result.get("stderr", "")
rc = sandbox_result.get("returncode", -1)
if err:
out = f"{out}\n{err}" if out else err
return {"ok": sandbox_result.get("ok", False), "output": f"[exit {rc}]\n{out}"}
def install_package(ctx: ToolContext, args: Dict[str, Any],
cancel: Optional[CancelFn] = None,
on_output=None) -> Dict[str, Any]:
from cowork_local.core.deps import pip_install
package = str(args.get("package", "")).strip()
if not package:
return {"ok": False, "output": "No package specified."}
python = _sandbox_python(ctx, cancel, on_output)
ok, detail = pip_install(package, cancel=cancel, on_output=on_output, python=python)
head = f"Installed {package}." if ok else f"Could not install {package}."
return {"ok": ok, "output": f"{head}\n{detail}"}
__all__ = ["COMMAND_TIMEOUT", "run_command", "install_package", "_snapshot"]
+55
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@@ -0,0 +1,55 @@
"""Fetch tools - fetch_url, jira_search, jira_get_issue (R05-T02).
Moved verbatim out of ``core/tools.py`` (see ``file_tools.py`` for why). The
network access these three carry is exactly what the ``ToolCapability.NETWORK``
tag added in R05-T01/domain/tools/tool_registry.py describes.
"""
from __future__ import annotations
from typing import Any, Dict
from .tool_context import ToolContext
def fetch_url(ctx: ToolContext, args: Dict[str, Any]) -> Dict[str, Any]:
"""Fetch a URL's text content (web page / online document / SharePoint-
OneDrive share link) via link_fetch — the same parser task-link attachments
use. Honors the Sandbox Security Layer's "Block network" policy."""
url = str(args.get("url", "")).strip()
if not url:
return {"ok": False, "output": "fetch_url: 'url' is required."}
if not url.lower().startswith(("http://", "https://")):
return {"ok": False, "output": f"fetch_url: not an http(s) URL: {url}"}
if not ctx.allow_url_fetch:
return {"ok": False,
"output": ("fetch_url: URL fetching is turned off in Settings → Security "
"(\"Allow the agent to fetch URLs\").")}
# A pasted Jira issue link on the CONNECTED Jira host is read via the
# authenticated API (so private issues resolve, not a login page). Public
# links / any other URL fall through to the normal fetcher below.
from cowork_local.core import jira_tool
if jira_tool.is_jira_issue_url(ctx.jira, url):
return {"ok": True, "output": jira_tool.get_issue_by_url(ctx.jira, url)}
from cowork_local.core.link_fetch import fetch_link_preview
return {"ok": True, "output": fetch_link_preview(url)}
def jira_search(ctx: ToolContext, args: Dict[str, Any]) -> Dict[str, Any]:
from cowork_local.core import jira_tool
out = jira_tool.search(ctx.jira, str(args.get("jql", "")),
int(args.get("max_results", 25) or 25))
return {"ok": not out.lower().startswith(("jira is not configured", "jira search failed")),
"output": out}
def jira_get_issue(ctx: ToolContext, args: Dict[str, Any]) -> Dict[str, Any]:
from cowork_local.core import jira_tool
out = jira_tool.get_issue(ctx.jira, str(args.get("key", "")))
return {"ok": not out.lower().startswith(("jira is not configured", "could not fetch")),
"output": out}
__all__ = ["fetch_url", "jira_search", "jira_get_issue"]
+136
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@@ -0,0 +1,136 @@
"""File tools - read_file, list_dir, write_file, edit_file (R05-T02).
Moved verbatim out of ``core/tools.py``, whose ``execute_tool`` used to
dispatch to these via a hand-written if/elif chain over every tool name it
knew about. Splitting the built-in handlers into per-concern modules
(this one, ``command_tools.py``, ``fetch_tools.py``) means adding a tool no
longer means growing that one function; ``core/tools.py::execute_tool`` now
looks the name up in a dict built from these modules instead.
Behavior is unchanged from before the split - this is a pure move, not a
rewrite. Every existing characterization/contract test that exercises
read_file/write_file/edit_file/list_dir through ``core.tools.execute_tool``
still exercises the exact same code, just imported from here.
"""
from __future__ import annotations
import ast
from pathlib import Path
from typing import Any, Dict
from .tool_context import ToolContext
MAX_READ_BYTES = 200_000
def _flatten_rel(rel: str) -> str:
"""Collapse a sub-folder path down to a bare filename so the file lands in the
workdir root — EXCEPT the ``.scratch`` sandbox subtree, which is preserved.
Used by the Cowork agent (flatten_writes=True) so it can never create a
per-session / per-chat / per-task output sub-folder: every deliverable stays
directly in the single configured Output folder."""
parts = Path(rel).parts
if parts and parts[0] == ".scratch":
return rel # temporary sandbox is allowed (and cleaned up afterwards)
return Path(rel).name or rel
def _check_python_syntax(target: Path, content: str) -> str:
"""Return a short warning if ``content`` is invalid Python, else ''.
Catches syntax errors the instant a .py file is written/edited — before the
agent wastes a whole run_command round-trip just to get the same error back
from a traceback."""
if target.suffix.lower() not in (".py", ".pyw"):
return ""
try:
ast.parse(content, filename=str(target))
return ""
except SyntaxError as exc:
return f"\n⚠ Syntax error at line {exc.lineno}: {exc.msg} — fix this before running the file."
def read_file(ctx: ToolContext, args: Dict[str, Any]) -> Dict[str, Any]:
target = ctx.resolve(str(args.get("path", "")))
if not target.exists():
return {"ok": False, "output": f"File not found: {args.get('path')}"}
data = target.read_bytes()[:MAX_READ_BYTES]
text = data.decode("utf-8", errors="replace")
return {"ok": True, "output": text}
def list_dir(ctx: ToolContext, args: Dict[str, Any]) -> Dict[str, Any]:
rel = str(args.get("path", ".") or ".")
target = ctx.resolve(rel)
# A missing/not-yet-created path is NOT a tool failure — report it as an
# ordinary result so the agent can create it or pick another path and keep
# going. Returning ok=False here surfaced a false "tool failed: list_dir" in
# Co4E flows and could stall a step on a recoverable situation.
if not target.exists():
return {"ok": True, "output": f"(path '{rel}' does not exist yet — create it or use another path)"}
if target.is_file():
return {"ok": True, "output": f"('{rel}' is a file, not a directory)"}
entries = []
for child in sorted(target.iterdir(), key=lambda p: (p.is_file(), p.name.lower())):
marker = "/" if child.is_dir() else ""
entries.append(f"{child.name}{marker}")
return {"ok": True, "output": "\n".join(entries) or "(empty folder)"}
def write_file(ctx: ToolContext, args: Dict[str, Any]) -> Dict[str, Any]:
rel = str(args.get("path", ""))
if ctx.flatten_writes:
rel = _flatten_rel(rel)
target = ctx.resolve(rel)
content = str(args.get("content", ""))
target.parent.mkdir(parents=True, exist_ok=True)
# A .xlsx is a binary package — build a REAL workbook from the content
# (CSV/TSV/Markdown-table/JSON) rather than writing raw text (which corrupts it).
if target.suffix.lower() in (".xlsx", ".xlsm"):
from cowork_local.core import xlsx_write
if xlsx_write.build_xlsx_from_text(target, content):
return {"ok": True, "path": str(target),
"output": f"Wrote spreadsheet {rel} ({target.name})."}
return {"ok": False, "output": "Could not build the .xlsx (openpyxl unavailable) — "
"write a .csv instead, or use a generator script."}
target.write_text(content, encoding="utf-8")
warning = _check_python_syntax(target, content)
return {"ok": True, "path": str(target),
"output": f"Wrote {len(content)} chars to {rel}.{warning}"}
def edit_file(ctx: ToolContext, args: Dict[str, Any]) -> Dict[str, Any]:
"""Replace an exact snippet inside an existing file (precise patch edit)."""
rel = str(args.get("path", ""))
if ctx.flatten_writes:
rel = _flatten_rel(rel)
target = ctx.resolve(rel)
if not target.exists():
return {"ok": False,
"output": f"File not found: {rel} — use write_file to create it."}
old = str(args.get("old_string", ""))
new = str(args.get("new_string", ""))
replace_all = bool(args.get("replace_all", False))
if not old:
return {"ok": False, "output": "old_string is empty — provide the exact text to replace."}
try:
text = target.read_text(encoding="utf-8", errors="replace")
except OSError as exc:
return {"ok": False, "output": f"Could not read file: {exc}"}
count = text.count(old)
if count == 0:
return {"ok": False, "output": ("old_string not found. Read the file and copy the exact "
"text to replace, including indentation/whitespace.")}
if count > 1 and not replace_all:
return {"ok": False, "output": (f"old_string appears {count} times — add surrounding "
"context to make it unique, or set replace_all=true.")}
updated = text.replace(old, new) if replace_all else text.replace(old, new, 1)
target.write_text(updated, encoding="utf-8")
n = count if replace_all else 1
warning = _check_python_syntax(target, updated)
return {"ok": True,
"output": f"Edited {args.get('path')} ({n} replacement{'' if n == 1 else 's'}).{warning}"}
__all__ = ["MAX_READ_BYTES", "read_file", "list_dir", "write_file", "edit_file"]
+62
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@@ -0,0 +1,62 @@
"""ToolContext / ToolError / CancelFn - the sandboxed execution context every
built-in tool runs against (moved out of ``core/tools.py`` in R05-T02).
Kept as its own leaf module (no dependency on any sibling in this package) so
``file_tools.py``, ``command_tools.py`` and ``fetch_tools.py`` can each import
it without creating an import cycle back through ``core/tools.py``, which
itself re-exports ``ToolContext``/``ToolError`` from here for the existing
callers (``core/chat_agent.py``, ``core/code_agent.py``,
``core/task_executors.py``) that do ``from .tools import ToolContext``.
"""
from __future__ import annotations
from dataclasses import dataclass
from pathlib import Path
from typing import Any, Callable, Dict, Optional
CancelFn = Callable[[], bool]
class ToolError(Exception):
pass
@dataclass
class ToolContext:
workdir: Path
flatten_writes: bool = False # Cowork: force every write into the workdir root
sandbox: bool = False # Code tab: isolate run_command/install_package into <workdir>/.venv
# Sandbox Security Layer — Settings' "Resource Limits" (cpu_percent/memory_mb/
# disk_mb), applied to every run_command/install_package this context runs.
# None (default) = no limits, matching pre-existing behavior.
resource_limits: Optional[Dict[str, float]] = None
# Sandbox Security Layer — Settings' "Block network for agent commands"
# (policy-level, see deps.py::network_blocked_env). False (default) =
# unrestricted, matching pre-existing behavior.
block_network: bool = False
# Whether the fetch_url tool may read URLs — SEPARATE from block_network
# (reading a web page/share link for info is safe; running networked shell
# commands is the risk). Defaults True; set from agent_security.allow_url_fetch.
allow_url_fetch: bool = True
# Jira read connector config (base_url/email/api_token) — None disables the
# jira_* tools' ability to connect. Populated from config.data["jira"].
jira: Optional[Dict[str, Any]] = None
def resolve(self, rel: str) -> Path:
"""Resolve ``rel`` inside the workdir, rejecting escapes."""
if rel in ("", "."):
return self.workdir
candidate = (self.workdir / rel).expanduser()
try:
resolved = candidate.resolve()
except OSError as exc:
raise ToolError(f"Invalid path: {rel} ({exc})")
root = self.workdir.resolve()
if resolved != root and root not in resolved.parents:
raise ToolError(
f"Refused: '{rel}' is outside the working folder ({root})."
)
return resolved
__all__ = ["CancelFn", "ToolError", "ToolContext"]
+5
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@@ -0,0 +1,5 @@
"""MCP server connection lifecycle management (EPIC R05)."""
from .mcp_source_manager import McpToolSourceManager
__all__ = ["McpToolSourceManager"]
+113
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@@ -0,0 +1,113 @@
"""McpToolSourceManager - the MCP server connection lifecycle, extracted out
of ``state.py::AppContext`` (R05-T05).
Today ``AppContext.build_mcp_tools`` inlines all of this: a ``_mcp_connections``
dict, a ``_conn_lock`` guarding check-then-create against concurrent turns (a
Cowork tab, a Co4E flow and a Scheduled Task can all call it at once), and a
"start it, cache it, skip it on failure" loop repeated for both the
admin-configured servers AND the built-in MS365 server
(``_ms365_builtin_connection``). None of that logic touches Qt; it was only
ever inline because ``AppContext`` is where the config lived.
This class owns the SAME cache/lock/start-or-skip behavior as a standalone,
directly testable object — ``AppContext`` becomes a thin caller (one instance
per app, same as it holds one ``RoutingApplicationService``).
Pure Python: no Qt. It DOES touch the network/filesystem via
``core.mcp_client.McpServerConnection`` (a subprocess + asyncio loop), which is
exactly what makes it infrastructure rather than domain.
"""
from __future__ import annotations
import threading
from typing import Dict, List, Optional
from cowork_local.core.mcp_client import McpServerConnection
class McpToolSourceManager:
"""Caches and supervises one :class:`McpServerConnection` per server name.
``connection_factory`` defaults to ``McpServerConnection`` itself; tests
substitute a fake so no real subprocess is spawned (see
``tests/unit/test_mcp_source_manager.py``).
"""
def __init__(self, connection_factory=McpServerConnection) -> None:
self._connections: Dict[str, McpServerConnection] = {}
self._lock = threading.Lock()
self._connection_factory = connection_factory
def ensure(self, name: str, command: str, args: Optional[List[str]] = None,
env: Optional[Dict[str, str]] = None) -> Optional[McpServerConnection]:
"""Return a live connection for ``name``, starting one if there is
none cached or the cached one's subprocess has died.
Serialized under one lock so two turns racing to build their tool
list at the same moment share one subprocess per server instead of
each spawning their own (the bug this replaces:
``AppContext._conn_lock``'s original docstring). Returns ``None`` -
never raises - when the server fails to start, matching the existing
"one broken server must not block the turn" behavior.
"""
with self._lock:
existing = self._connections.get(name)
if existing is not None and existing.is_alive():
return existing
if existing is not None:
self._connections.pop(name, None)
connection = self._connection_factory(name, command, args or [], env)
try:
connection.start()
except Exception: # noqa: BLE001 - one broken server must not block the turn
return None
self._connections[name] = connection
return connection
def get(self, name: str) -> Optional[McpServerConnection]:
"""The cached connection for ``name``, without starting one."""
return self._connections.get(name)
def is_alive(self, name: str) -> bool:
connection = self._connections.get(name)
return connection is not None and connection.is_alive()
def restart(self, name: str, command: str, args: Optional[List[str]] = None,
env: Optional[Dict[str, str]] = None) -> Optional[McpServerConnection]:
"""Force a fresh connection for ``name`` even if the cached one still
looks alive - for a server the caller knows is misbehaving."""
with self._lock:
self._connections.pop(name, None)
return self.ensure(name, command, args, env)
def stop(self, name: str) -> None:
"""Stop and forget one connection - used when a server becomes
unavailable by configuration (e.g. MS365 signed out) rather than by
crashing."""
with self._lock:
connection = self._connections.pop(name, None)
if connection is not None:
try:
connection.stop()
except Exception: # noqa: BLE001 - shutdown must never raise into the caller
pass
def active(self) -> List[McpServerConnection]:
"""Every currently cached connection - what
``core/mcp_client.py::build_mcp_tools`` merges tool specs from."""
return list(self._connections.values())
def stop_all(self) -> None:
"""Terminate every connection's subprocess - called on app shutdown
so none of them linger as orphan processes."""
with self._lock:
connections = list(self._connections.values())
self._connections.clear()
for connection in connections:
try:
connection.stop()
except Exception: # noqa: BLE001
pass
__all__ = ["McpToolSourceManager"]
+47 -74
View File
@@ -6,6 +6,7 @@ import time
from typing import TYPE_CHECKING, Optional, Tuple
from .config import AppConfig
from .infrastructure.mcp import McpToolSourceManager
def resolve_agent_default(
@@ -38,18 +39,18 @@ class AppContext:
def __init__(self, config: AppConfig):
self.config = config
self.started_at = time.time() # for Monitoring's Sandbox Details "Created"/"Uptime"
self._mcp_connections: dict = {} # server name -> McpServerConnection
# Admin-configured MCP servers + the built-in MS365 server (R05-T05):
# connection caching/lifecycle (check-then-create, restart, shutdown)
# now lives in McpToolSourceManager, extracted so it is testable
# without an AppContext/Qt. See its docstring for why the check-then-
# create race matters — several turns (multiple Cowork tabs, parallel
# Co4E flows, scheduled tasks) can call build_mcp_tools() at once.
self._mcp_manager = McpToolSourceManager()
self._ext_connections: dict = {} # connector id -> McpServerConnection (mcp_stdio mode only)
# Guards the two connection caches above. build_mcp_tools() runs on EVERY
# chat turn's own AgentWorker thread, so several turns (multiple Cowork
# tabs, parallel Co4E flows, scheduled tasks) can enter it at once. The
# cache is populated check-then-create ("conn is None → spawn → store");
# without this lock two concurrent turns both see None and each spawns a
# subprocess for the SAME server — one leaks as an orphan and the wrong
# object may be handed out. The lock makes connection setup atomic; the
# provider/HTTP path itself is already thread-safe (a fresh provider per
# call, module-level `requests`, MCP calls multiplexed on the server's
# own event loop), so concurrent model calls never needed serializing.
# Guards ``_ext_connections`` only now — unified Connectors (CAD/CAE/
# MS365/Other) aren't covered by McpToolSourceManager (R05-T05 scoped
# to MCP servers), so this cache still needs its own check-then-create
# lock, the same race McpToolSourceManager guards against internally.
self._conn_lock = threading.Lock()
self._routing_service = None # lazy RoutingService (Auto Model Routing)
# Lazy RoutingApplicationService (R03-T03) — the Qt-free decision layer
@@ -237,48 +238,41 @@ class AppContext:
if not self.config.connect_external:
return [], None
from .core.ext_connectors import build_ext_connector_tools
from .core.mcp_client import McpServerConnection
from .core.mcp_client import build_mcp_tools as _merge_mcp_tools
from .core.tools import combine_tool_sources
# Serialize the check-then-create against the connection caches so
# concurrent turns share one subprocess per server instead of racing to
# spawn duplicates (see _conn_lock in __init__). The lock is held while
# connections are established (a one-time cost per server per app run);
# once warm, every turn just finds the cached connection and returns.
with self._conn_lock:
active = []
for entry in self.config.mcp_servers:
if not entry.get("enabled", True):
continue
name = entry.get("name", "")
command = entry.get("command", "")
if not name or not command:
continue
conn = self._mcp_connections.get(name)
if conn is None:
conn = McpServerConnection(name, command, entry.get("args") or [],
entry.get("env") or None)
try:
conn.start()
except Exception: # noqa: BLE001 - one broken server must not block the turn
continue
self._mcp_connections[name] = conn
# R05-T05: connection caching/check-then-create for admin-configured
# servers + the MS365 builtin now lives in McpToolSourceManager (its
# own lock guards the race — see its docstring).
active = []
for entry in self.config.mcp_servers:
if not entry.get("enabled", True):
continue
name = entry.get("name", "")
command = entry.get("command", "")
if not name or not command:
continue
conn = self._mcp_manager.ensure(name, command, entry.get("args") or [],
entry.get("env") or None)
if conn is not None:
active.append(conn)
builtin = self._ms365_builtin_connection(skip={c.name for c in active})
if builtin is not None:
active.append(builtin)
mcp_tools, mcp_executor = _merge_mcp_tools(active)
builtin = self._ms365_builtin_connection(skip={c.name for c in active})
if builtin is not None:
active.append(builtin)
mcp_tools, mcp_executor = _merge_mcp_tools(active)
# ``_ext_connections`` isn't covered by McpToolSourceManager (T05
# scoped to MCP servers) — still serialized under ``_conn_lock``.
with self._conn_lock:
ext = self.config.ext_connectors
all_connectors = [*ext.get("cad", []), *ext.get("cae", []),
*ext.get("ms365", []), *ext.get("other", [])]
ext_tools, ext_executor = build_ext_connector_tools(all_connectors, self._ext_connections)
# Locally-synced OneDrive/SharePoint (no sign-in) — reads/writes the
# OneDrive-desktop-synced folders directly, gated on ms365.connectors.
from .core.ms365_local import build_ms365_local_tools
local_tools, local_executor = build_ms365_local_tools(self.config)
# Locally-synced OneDrive/SharePoint (no sign-in) — reads/writes the
# OneDrive-desktop-synced folders directly, gated on ms365.connectors.
from .core.ms365_local import build_ms365_local_tools
local_tools, local_executor = build_ms365_local_tools(self.config)
return combine_tool_sources((mcp_tools, mcp_executor), (ext_tools, ext_executor),
(local_tools, local_executor))
@@ -308,36 +302,20 @@ class AppContext:
import sys
from pathlib import Path
from .core.mcp_client import McpServerConnection
name = self._MS365_BUILTIN
if name in skip:
return None
if not self._ms365_available():
stale = self._mcp_connections.pop(name, None)
if stale is not None:
try:
stale.stop()
except Exception: # noqa: BLE001
pass
self._mcp_manager.stop(name)
return None
conn = self._mcp_connections.get(name)
if conn is None:
# The subprocess must import cowork_local even in a from-source run
# (PYTHONPATH=src) — prepend this package's parent dir explicitly.
env = dict(os.environ)
src_root = str(Path(__file__).resolve().parent.parent)
env["PYTHONPATH"] = (src_root + os.pathsep + env["PYTHONPATH"]
if env.get("PYTHONPATH") else src_root)
conn = McpServerConnection(
name, sys.executable,
["-m", "cowork_local.mcp_servers.ms365_server"], env)
try:
conn.start()
except Exception: # noqa: BLE001 - MS365 down must not block the turn
return None
self._mcp_connections[name] = conn
return conn
# The subprocess must import cowork_local even in a from-source run
# (PYTHONPATH=src) — prepend this package's parent dir explicitly.
env = dict(os.environ)
src_root = str(Path(__file__).resolve().parent.parent)
env["PYTHONPATH"] = (src_root + os.pathsep + env["PYTHONPATH"]
if env.get("PYTHONPATH") else src_root)
return self._mcp_manager.ensure(
name, sys.executable, ["-m", "cowork_local.mcp_servers.ms365_server"], env)
def stop_mcp_connections(self) -> None:
"""Terminate every connected MCP server's subprocess (incl. External
@@ -345,11 +323,6 @@ class AppContext:
them linger as orphan processes."""
from .core.ext_connectors import stop_ext_connections
self._mcp_manager.stop_all()
with self._conn_lock:
for conn in self._mcp_connections.values():
try:
conn.stop()
except Exception: # noqa: BLE001
pass
self._mcp_connections.clear()
stop_ext_connections(self._ext_connections)
+62
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@@ -0,0 +1,62 @@
"""EPIC R05-T03/T04: ``core/code_agent.py::run_code`` used to gate tool calls
with ``if name in (WRITE_TOOLS | MS365_WRITE_TOOLS): gate.request(...)``. This
pins that the switch to ``ToolPolicyGateway`` still gates exactly the same
calls: ``write_file`` (a WRITE tool) consults the gate; ``list_dir``
(read-only) never does.
Runs the REAL engine (``run_code``) via :class:`FakeProvider`, same approach
``tests/characterization/test_run_cowork.py`` uses for the Cowork engine.
"""
from __future__ import annotations
from typing import Any, Dict, List
from cowork_local.core.code_agent import run_code
from cowork_local.core.tools import ToolContext
from tests.fakes import FakeProvider, ScriptedTurn
class _RecordingGate:
def __init__(self, approve: bool):
self.approve = approve
self.calls: List[Dict[str, Any]] = []
def request(self, payload: Dict[str, Any]) -> bool:
self.calls.append(payload)
return self.approve
def _run(tmp_path, provider, gate):
ctx = ToolContext(tmp_path)
events: List[Dict[str, Any]] = []
messages: List[Dict[str, Any]] = [{"role": "user", "content": "do it"}]
run_code(provider, messages, ctx, gate, events.append)
return events
def test_write_file_consults_the_gate_and_honors_rejection(tmp_path):
provider = FakeProvider([
ScriptedTurn(tool_calls=[("write_file", {"path": "a.txt", "content": "hi"})]),
ScriptedTurn(text="done"),
])
gate = _RecordingGate(approve=False)
events = _run(tmp_path, provider, gate)
assert len(gate.calls) == 1 and gate.calls[0]["name"] == "write_file"
results = [e for e in events if e.get("type") == "tool_result"]
assert results[0]["ok"] is False
assert not (tmp_path / "a.txt").exists() # rejected, never actually written
def test_read_only_tool_never_consults_the_gate(tmp_path):
(tmp_path / "existing.txt").write_text("x", encoding="utf-8")
provider = FakeProvider([
ScriptedTurn(tool_calls=[("list_dir", {})]),
ScriptedTurn(text="done"),
])
gate = _RecordingGate(approve=False) # would reject if ever asked
events = _run(tmp_path, provider, gate)
assert gate.calls == []
results = [e for e in events if e.get("type") == "tool_result"]
assert results[0]["ok"] is True
@@ -0,0 +1,86 @@
"""EPIC R05-T04: before this change, ``core/chat_agent.py::run_cowork`` called
``extra_executor(name, args)`` directly for any MCP/connector tool — no
permission check at all, regardless of the "confirm before running commands"
setting. This pins the fix: an extra tool now goes through the same
``ToolPolicyGateway`` as ``run_command``, using the conservative default
capability (``UNKNOWN_SOURCE_CAPABILITIES``) since MCP tools carry no
standard risk metadata.
Runs the real engine via :class:`FakeProvider`, matching
``tests/characterization/test_run_cowork.py``'s approach.
"""
from __future__ import annotations
from typing import Any, Dict, List
from cowork_local.core.chat_agent import run_cowork
from cowork_local.providers.base import ToolSpec
from tests.fakes import FakeProvider, ScriptedTurn
class _RecordingGate:
def __init__(self, approve: bool):
self.approve = approve
self.calls: List[Dict[str, Any]] = []
def request(self, payload: Dict[str, Any]) -> bool:
self.calls.append(payload)
return self.approve
_EXTRA_SPEC = ToolSpec(name="github__delete_repo", description="", parameters={"type": "object"})
def _run(tmp_path, provider, gate, executed: List[str]):
events: List[Dict[str, Any]] = []
messages: List[Dict[str, Any]] = [{"role": "user", "content": "hi"}]
def extra_executor(name: str, args: Dict[str, Any]) -> Dict[str, Any]:
executed.append(name)
return {"ok": True, "output": "done"}
run_cowork(provider, messages, tmp_path, events.append, gate=gate,
extra_tools=[_EXTRA_SPEC], extra_executor=extra_executor)
return events
def test_mcp_style_tool_is_rejected_without_ever_calling_the_executor(tmp_path):
provider = FakeProvider([
ScriptedTurn(tool_calls=[("github__delete_repo", {})]),
ScriptedTurn(text="done"),
])
gate = _RecordingGate(approve=False)
executed: List[str] = []
events = _run(tmp_path, provider, gate, executed)
assert len(gate.calls) == 1 and gate.calls[0]["name"] == "github__delete_repo"
assert executed == [] # rejected BEFORE the extra_executor ever ran
results = [e for e in events if e.get("type") == "tool_result"]
assert results[0]["ok"] is False
def test_mcp_style_tool_runs_once_approved(tmp_path):
provider = FakeProvider([
ScriptedTurn(tool_calls=[("github__delete_repo", {})]),
ScriptedTurn(text="done"),
])
gate = _RecordingGate(approve=True)
executed: List[str] = []
events = _run(tmp_path, provider, gate, executed)
assert executed == ["github__delete_repo"]
results = [e for e in events if e.get("type") == "tool_result"]
assert results[0]["ok"] is True
def test_no_gate_preserves_auto_run_for_extra_tools(tmp_path):
"""``gate=None`` is Cowork's existing "no confirmation configured" state —
must still auto-run, exactly like before this EPIC."""
provider = FakeProvider([
ScriptedTurn(tool_calls=[("github__delete_repo", {})]),
ScriptedTurn(text="done"),
])
executed: List[str] = []
events = _run(tmp_path, provider, None, executed)
assert executed == ["github__delete_repo"]
+106
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@@ -0,0 +1,106 @@
"""EPIC R05-T05: the MCP connection lifecycle extracted out of
``state.py::AppContext`` into :class:`McpToolSourceManager`.
Uses a fake connection (no real subprocess/asyncio loop) so these tests run in
milliseconds and don't depend on any actual MCP server being installed.
"""
from __future__ import annotations
from typing import Dict, List, Optional
from cowork_local.infrastructure.mcp import McpToolSourceManager
class _FakeConnection:
"""Stands in for ``core.mcp_client.McpServerConnection`` — tracks
start/stop calls instead of spawning anything."""
instances: List["_FakeConnection"] = []
def __init__(self, name: str, command: str, args: Optional[List[str]] = None,
env: Optional[Dict[str, str]] = None):
self.name = name
self.command = command
self.args = args
self.env = env
self.started = False
self.stopped = False
self._alive = True
_FakeConnection.instances.append(self)
def start(self) -> None:
self.started = True
def stop(self) -> None:
self.stopped = True
self._alive = False
def is_alive(self) -> bool:
return self._alive
def _manager() -> McpToolSourceManager:
_FakeConnection.instances.clear()
return McpToolSourceManager(connection_factory=_FakeConnection)
def test_ensure_starts_once_and_caches_the_live_connection():
mgr = _manager()
first = mgr.ensure("github", "npx", ["-y", "github-mcp"])
second = mgr.ensure("github", "npx", ["-y", "github-mcp"])
assert first is second # same connection reused, not a second subprocess
assert len(_FakeConnection.instances) == 1
assert first.started is True
def test_two_concurrent_ensures_for_different_servers_dont_collide():
mgr = _manager()
a = mgr.ensure("server-a", "cmd-a")
b = mgr.ensure("server-b", "cmd-b")
assert a is not b
assert {c.name for c in mgr.active()} == {"server-a", "server-b"}
def test_ensure_restarts_when_the_cached_connection_died():
mgr = _manager()
first = mgr.ensure("flaky", "cmd")
first.stop() # simulate the subprocess crashing
assert mgr.is_alive("flaky") is False
second = mgr.ensure("flaky", "cmd")
assert second is not first
assert len(_FakeConnection.instances) == 2
def test_a_server_that_fails_to_start_returns_none_and_isnt_cached():
class _DyingConnection(_FakeConnection):
def start(self) -> None:
raise RuntimeError("boom")
mgr = McpToolSourceManager(connection_factory=_DyingConnection)
assert mgr.ensure("broken", "cmd") is None
assert mgr.get("broken") is None
def test_stop_removes_one_connection_without_touching_others():
mgr = _manager()
mgr.ensure("keep", "cmd")
doomed = mgr.ensure("drop", "cmd")
mgr.stop("drop")
assert doomed.stopped is True
assert mgr.get("drop") is None
assert mgr.get("keep") is not None
def test_stop_all_stops_every_connection_and_clears_the_cache():
mgr = _manager()
mgr.ensure("a", "cmd")
mgr.ensure("b", "cmd")
mgr.stop_all()
assert all(c.stopped for c in _FakeConnection.instances)
assert mgr.active() == []
+107
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@@ -0,0 +1,107 @@
"""Unit tests for EPIC R05: the tool descriptor/registry (R05-T01), the split
built-in handlers (R05-T02), and the policy gateway (R05-T03).
The gateway tests assert the SAME capability set each engine used to hard-code
as a name tuple still gets gated after the switch to capability lookup — that
equivalence is the whole point of R05-T03, not an incidental detail.
"""
from __future__ import annotations
from typing import Any, Dict
import pytest
from cowork_local.application.conversations import ToolPolicyGateway
from cowork_local.core.tools import TOOL_SPECS, ToolContext, execute_tool
from cowork_local.domain.tools import ToolCapability, ToolDescriptor, default_registry
# --------------------------------------------------------------------------- #
# R05-T01 - ToolDescriptor / ToolRegistry
# --------------------------------------------------------------------------- #
def test_capability_flags_compose():
install = ToolDescriptor("install_package", "", {}, ToolCapability.WRITE | ToolCapability.EXECUTE)
assert install.has(ToolCapability.WRITE)
assert install.has(ToolCapability.EXECUTE)
assert not install.has(ToolCapability.NETWORK)
def test_default_registry_matches_todays_hardcoded_gating_sets():
"""The two literal sets this EPIC replaces:
``core/tools.py::WRITE_TOOLS`` and ``core/chat_agent.py``'s
``("run_command", "install_package")`` tuple. The registry must agree
with both, or the capability switch silently changes who gets gated."""
registry = default_registry(TOOL_SPECS)
execute_gated = {d.name for d in registry.all() if d.has(ToolCapability.EXECUTE)}
assert execute_gated == {"run_command", "install_package"}
write_gated = {d.name for d in registry.all() if d.has(ToolCapability.WRITE)}
assert write_gated == {"write_file", "edit_file", "install_package"}
def test_unregistered_tool_has_no_capabilities():
registry = default_registry(TOOL_SPECS)
assert registry.capabilities_for("no_such_tool") is ToolCapability.NONE
# --------------------------------------------------------------------------- #
# R05-T02 - core/tools.py dispatch, now built from the split infra modules
# --------------------------------------------------------------------------- #
def test_execute_tool_still_dispatches_every_built_in(tmp_path):
ctx = ToolContext(tmp_path)
written = execute_tool(ctx, "write_file", {"path": "a.txt", "content": "hi"})
assert written["ok"] is True
read = execute_tool(ctx, "read_file", {"path": "a.txt"})
assert read == {"ok": True, "output": "hi"}
edited = execute_tool(ctx, "edit_file", {"path": "a.txt", "old_string": "hi", "new_string": "bye"})
assert edited["ok"] is True
assert execute_tool(ctx, "read_file", {"path": "a.txt"})["output"] == "bye"
listing = execute_tool(ctx, "list_dir", {})
assert listing["ok"] is True and "a.txt" in listing["output"]
def test_execute_tool_reports_unknown_name(tmp_path):
ctx = ToolContext(tmp_path)
result = execute_tool(ctx, "not_a_real_tool", {})
assert result == {"ok": False, "output": "Tool not found: not_a_real_tool"}
# --------------------------------------------------------------------------- #
# R05-T03 - ToolPolicyGateway
# --------------------------------------------------------------------------- #
class _RecordingGate:
def __init__(self, approve: bool):
self.approve = approve
self.calls: list = []
def request(self, payload: Dict[str, Any]) -> bool:
self.calls.append(payload)
return self.approve
@pytest.fixture
def cowork_policy() -> ToolPolicyGateway:
"""Same construction as ``core/chat_agent.py``'s module-level
``_COWORK_TOOL_POLICY`` - EXECUTE is exactly what Cowork used to gate via
the literal ``("run_command", "install_package")`` tuple."""
return ToolPolicyGateway(default_registry(TOOL_SPECS), ToolCapability.EXECUTE)
def test_no_gate_means_auto_run(cowork_policy):
assert cowork_policy.allow("run_command", None, {}) is True
def test_read_only_tool_never_asks_the_gate(cowork_policy):
gate = _RecordingGate(approve=False) # would reject if asked
assert cowork_policy.allow("write_file", gate, {}) is True
assert gate.calls == [] # never consulted - write_file isn't EXECUTE
def test_gated_capability_consults_the_gate_and_honors_its_answer(cowork_policy):
approving = _RecordingGate(approve=True)
assert cowork_policy.allow("run_command", approving, {"name": "run_command"}) is True
assert approving.calls == [{"name": "run_command"}]
rejecting = _RecordingGate(approve=False)
assert cowork_policy.allow("install_package", rejecting, {}) is False