mirror of
https://github.com/NousResearch/hermes-agent.git
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emozilla
80d92daceb
Review follow-ups for the vault prompts on the session authority: - tools/thread_context.py, agent/vault_backends/unlock.py: carry the unlock owner (the session bound on the agent thread) to tool workers with the prompt callbacks. browser_vault often runs on a worker, where the owner was None, so closing the chat did not lock a manager it unlocked. get_current_session_id is the getter the table needs. - hermes_cli/cli_modal_mixin.py: _withdraw_gateway_modal closes the vault panels (they share the sudo panel's state) when another viewer answers first, instead of leaving the classic CLI parked until its own deadline. - tests: a worker-stored unlock is released with its session; another viewer answering each vault prompt releases main's real panel; the new gateway tests use tests.waiting.wait_until.
77 lines
3.5 KiB
Python
77 lines
3.5 KiB
Python
"""Propagate agent-turn context into worker threads that dispatch Hermes tools.
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A bare ``threading.Thread`` / ``ThreadPoolExecutor`` worker starts with an empty
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``contextvars.Context`` and no thread-local approval/sudo callbacks, so tool dispatch inside it
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silently loses the approval ContextVars (gateway sessions then auto-approve dangerous commands)
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and the CLI callbacks (``prompt_dangerous_approval`` cannot reach the user, GHSA-qg5c-hvr5-hjgr).
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Call :func:`propagate_context_to_thread` **on the parent thread** (it snapshots at call time) and
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use the result as the worker target; callbacks are installed for the worker's lifetime and
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always cleared on exit.
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"""
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from __future__ import annotations
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import contextvars
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import logging
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from typing import Callable
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logger = logging.getLogger(__name__)
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def _callback_api():
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"""(getter, setter) pairs for every thread-local prompt callback a tool may need mid-dispatch
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(lazy: terminal_tool imports tools.approval at load, so a top-level import risks a cycle).
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Add a new per-thread prompt here — a callback missing from this table is silently absent on
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every parallel/timeout worker, so the tool believes nobody can answer."""
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from agent.vault_backends import unlock as vault_unlock
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from tools import terminal_tool as tt
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return ((tt._get_approval_callback, tt.set_approval_callback),
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(tt._get_sudo_password_callback, tt.set_sudo_password_callback),
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(vault_unlock.get_unlock_prompt_callback, vault_unlock.set_unlock_prompt_callback),
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(vault_unlock.get_save_login_prompt_callback, vault_unlock.set_save_login_prompt_callback),
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(vault_unlock.get_code_prompt_callback, vault_unlock.set_code_prompt_callback),
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# The unlock owner: a manager unlocked on a worker must still be released with its session.
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(vault_unlock.get_current_session_id, vault_unlock.set_current_session_id))
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def propagate_context_to_thread(target: Callable) -> Callable:
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"""Wrap *target* to run with the *current* thread's ContextVars and per-thread prompt callbacks
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(approval, sudo, password-manager unlock).
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Fail-closed: if callback installation raises they stay ``None`` — dangerous commands are then
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denied by ``prompt_dangerous_approval`` and the gateway approval queue blocks.
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"""
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ctx = contextvars.copy_context()
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# (setter, parent callback) pairs; None when the callback API could not be captured.
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installs = None
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try:
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installs = tuple((setter, getter()) for getter, setter in _callback_api())
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except Exception:
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logger.debug("Could not capture parent approval/sudo callbacks", exc_info=True)
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def _runner(*args, **kwargs):
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def _inner():
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if installs is None:
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return target(*args, **kwargs)
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try:
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for setter, cb in installs:
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if cb is not None:
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setter(cb)
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except Exception:
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logger.debug("Failed to install propagated approval/sudo callbacks; "
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"dangerous-command approval will fail closed", exc_info=True)
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try:
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return target(*args, **kwargs)
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finally:
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try:
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for setter, _cb in installs:
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setter(None)
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except Exception:
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logger.debug("Failed to clear propagated approval/sudo callbacks",
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exc_info=True)
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return ctx.run(_inner)
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return _runner
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