hermes / hermes_cli /callbacks.py
lenson78's picture
initial upload: v2026.3.23 with HF Spaces deployment
9aa5185 verified
"""Interactive prompt callbacks for terminal_tool integration.
These bridge terminal_tool's interactive prompts (clarify, sudo, approval)
into prompt_toolkit's event loop. Each function takes the HermesCLI instance
as its first argument and uses its state (queues, app reference) to coordinate
with the TUI.
"""
import queue
import time as _time
import getpass
from hermes_cli.banner import cprint, _DIM, _RST
from hermes_cli.config import save_env_value_secure
def clarify_callback(cli, question, choices):
"""Prompt for clarifying question through the TUI.
Sets up the interactive selection UI, then blocks until the user
responds. Returns the user's choice or a timeout message.
"""
from cli import CLI_CONFIG
timeout = CLI_CONFIG.get("clarify", {}).get("timeout", 120)
response_queue = queue.Queue()
is_open_ended = not choices or len(choices) == 0
cli._clarify_state = {
"question": question,
"choices": choices if not is_open_ended else [],
"selected": 0,
"response_queue": response_queue,
}
cli._clarify_deadline = _time.monotonic() + timeout
cli._clarify_freetext = is_open_ended
if hasattr(cli, "_app") and cli._app:
cli._app.invalidate()
while True:
try:
result = response_queue.get(timeout=1)
cli._clarify_deadline = 0
return result
except queue.Empty:
remaining = cli._clarify_deadline - _time.monotonic()
if remaining <= 0:
break
if hasattr(cli, "_app") and cli._app:
cli._app.invalidate()
cli._clarify_state = None
cli._clarify_freetext = False
cli._clarify_deadline = 0
if hasattr(cli, "_app") and cli._app:
cli._app.invalidate()
cprint(f"\n{_DIM}(clarify timed out after {timeout}s — agent will decide){_RST}")
return (
"The user did not provide a response within the time limit. "
"Use your best judgement to make the choice and proceed."
)
def sudo_password_callback(cli) -> str:
"""Prompt for sudo password through the TUI.
Sets up a password input area and blocks until the user responds.
"""
timeout = 45
response_queue = queue.Queue()
cli._sudo_state = {"response_queue": response_queue}
cli._sudo_deadline = _time.monotonic() + timeout
if hasattr(cli, "_app") and cli._app:
cli._app.invalidate()
while True:
try:
result = response_queue.get(timeout=1)
cli._sudo_state = None
cli._sudo_deadline = 0
if hasattr(cli, "_app") and cli._app:
cli._app.invalidate()
if result:
cprint(f"\n{_DIM} ✓ Password received (cached for session){_RST}")
else:
cprint(f"\n{_DIM} ⏭ Skipped{_RST}")
return result
except queue.Empty:
remaining = cli._sudo_deadline - _time.monotonic()
if remaining <= 0:
break
if hasattr(cli, "_app") and cli._app:
cli._app.invalidate()
cli._sudo_state = None
cli._sudo_deadline = 0
if hasattr(cli, "_app") and cli._app:
cli._app.invalidate()
cprint(f"\n{_DIM} ⏱ Timeout — continuing without sudo{_RST}")
return ""
def prompt_for_secret(cli, var_name: str, prompt: str, metadata=None) -> dict:
"""Prompt for a secret value through the TUI (e.g. API keys for skills).
Returns a dict with keys: success, stored_as, validated, skipped, message.
The secret is stored in ~/.hermes/.env and never exposed to the model.
"""
if not getattr(cli, "_app", None):
if not hasattr(cli, "_secret_state"):
cli._secret_state = None
if not hasattr(cli, "_secret_deadline"):
cli._secret_deadline = 0
try:
value = getpass.getpass(f"{prompt} (hidden, Enter to skip): ")
except (EOFError, KeyboardInterrupt):
value = ""
if not value:
cprint(f"\n{_DIM} ⏭ Secret entry cancelled{_RST}")
return {
"success": True,
"reason": "cancelled",
"stored_as": var_name,
"validated": False,
"skipped": True,
"message": "Secret setup was skipped.",
}
stored = save_env_value_secure(var_name, value)
cprint(f"\n{_DIM} ✓ Stored secret in ~/.hermes/.env as {var_name}{_RST}")
return {
**stored,
"skipped": False,
"message": "Secret stored securely. The secret value was not exposed to the model.",
}
timeout = 120
response_queue = queue.Queue()
cli._secret_state = {
"var_name": var_name,
"prompt": prompt,
"metadata": metadata or {},
"response_queue": response_queue,
}
cli._secret_deadline = _time.monotonic() + timeout
# Avoid storing stale draft input as the secret when Enter is pressed.
if hasattr(cli, "_clear_secret_input_buffer"):
try:
cli._clear_secret_input_buffer()
except Exception:
pass
elif hasattr(cli, "_app") and cli._app:
try:
cli._app.current_buffer.reset()
except Exception:
pass
if hasattr(cli, "_app") and cli._app:
cli._app.invalidate()
while True:
try:
value = response_queue.get(timeout=1)
cli._secret_state = None
cli._secret_deadline = 0
if hasattr(cli, "_app") and cli._app:
cli._app.invalidate()
if not value:
cprint(f"\n{_DIM} ⏭ Secret entry cancelled{_RST}")
return {
"success": True,
"reason": "cancelled",
"stored_as": var_name,
"validated": False,
"skipped": True,
"message": "Secret setup was skipped.",
}
stored = save_env_value_secure(var_name, value)
cprint(f"\n{_DIM} ✓ Stored secret in ~/.hermes/.env as {var_name}{_RST}")
return {
**stored,
"skipped": False,
"message": "Secret stored securely. The secret value was not exposed to the model.",
}
except queue.Empty:
remaining = cli._secret_deadline - _time.monotonic()
if remaining <= 0:
break
if hasattr(cli, "_app") and cli._app:
cli._app.invalidate()
cli._secret_state = None
cli._secret_deadline = 0
if hasattr(cli, "_clear_secret_input_buffer"):
try:
cli._clear_secret_input_buffer()
except Exception:
pass
elif hasattr(cli, "_app") and cli._app:
try:
cli._app.current_buffer.reset()
except Exception:
pass
if hasattr(cli, "_app") and cli._app:
cli._app.invalidate()
cprint(f"\n{_DIM} ⏱ Timeout — secret capture cancelled{_RST}")
return {
"success": True,
"reason": "timeout",
"stored_as": var_name,
"validated": False,
"skipped": True,
"message": "Secret setup timed out and was skipped.",
}
def approval_callback(cli, command: str, description: str) -> str:
"""Prompt for dangerous command approval through the TUI.
Shows a selection UI with choices: once / session / always / deny.
When the command is longer than 70 characters, a "view" option is
included so the user can reveal the full text before deciding.
Uses cli._approval_lock to serialize concurrent requests (e.g. from
parallel delegation subtasks) so each prompt gets its own turn.
"""
lock = getattr(cli, "_approval_lock", None)
if lock is None:
import threading
cli._approval_lock = threading.Lock()
lock = cli._approval_lock
with lock:
timeout = 60
response_queue = queue.Queue()
choices = ["once", "session", "always", "deny"]
if len(command) > 70:
choices.append("view")
cli._approval_state = {
"command": command,
"description": description,
"choices": choices,
"selected": 0,
"response_queue": response_queue,
}
cli._approval_deadline = _time.monotonic() + timeout
if hasattr(cli, "_app") and cli._app:
cli._app.invalidate()
while True:
try:
result = response_queue.get(timeout=1)
cli._approval_state = None
cli._approval_deadline = 0
if hasattr(cli, "_app") and cli._app:
cli._app.invalidate()
return result
except queue.Empty:
remaining = cli._approval_deadline - _time.monotonic()
if remaining <= 0:
break
if hasattr(cli, "_app") and cli._app:
cli._app.invalidate()
cli._approval_state = None
cli._approval_deadline = 0
if hasattr(cli, "_app") and cli._app:
cli._app.invalidate()
cprint(f"\n{_DIM} ⏱ Timeout — denying command{_RST}")
return "deny"