Files
hermes-agent/gateway/config.py
0xbyt4 bdcf247efe feat: add email gateway platform (IMAP/SMTP)
Allow users to interact with Hermes by sending and receiving emails.
Uses IMAP polling for incoming messages and SMTP for replies with
proper threading (In-Reply-To, References headers).

Integrates with all 14 gateway extension points: config, adapter
factory, authorization, send_message tool, cron delivery, toolsets,
prompt hints, channel directory, setup wizard, status display, and
env example.

65 tests covering config, parsing, dispatch, threading, IMAP fetch,
SMTP send, attachments, and all integration points.
2026-03-11 06:32:01 -07:00

472 lines
17 KiB
Python

"""
Gateway configuration management.
Handles loading and validating configuration for:
- Connected platforms (Telegram, Discord, WhatsApp)
- Home channels for each platform
- Session reset policies
- Delivery preferences
"""
import logging
import os
import json
from pathlib import Path
from dataclasses import dataclass, field
from typing import Dict, List, Optional, Any
from enum import Enum
logger = logging.getLogger(__name__)
class Platform(Enum):
"""Supported messaging platforms."""
LOCAL = "local"
TELEGRAM = "telegram"
DISCORD = "discord"
WHATSAPP = "whatsapp"
SLACK = "slack"
SIGNAL = "signal"
HOMEASSISTANT = "homeassistant"
EMAIL = "email"
@dataclass
class HomeChannel:
"""
Default destination for a platform.
When a cron job specifies deliver="telegram" without a specific chat ID,
messages are sent to this home channel.
"""
platform: Platform
chat_id: str
name: str # Human-readable name for display
def to_dict(self) -> Dict[str, Any]:
return {
"platform": self.platform.value,
"chat_id": self.chat_id,
"name": self.name,
}
@classmethod
def from_dict(cls, data: Dict[str, Any]) -> "HomeChannel":
return cls(
platform=Platform(data["platform"]),
chat_id=str(data["chat_id"]),
name=data.get("name", "Home"),
)
@dataclass
class SessionResetPolicy:
"""
Controls when sessions reset (lose context).
Modes:
- "daily": Reset at a specific hour each day
- "idle": Reset after N minutes of inactivity
- "both": Whichever triggers first (daily boundary OR idle timeout)
- "none": Never auto-reset (context managed only by compression)
"""
mode: str = "both" # "daily", "idle", "both", or "none"
at_hour: int = 4 # Hour for daily reset (0-23, local time)
idle_minutes: int = 1440 # Minutes of inactivity before reset (24 hours)
def to_dict(self) -> Dict[str, Any]:
return {
"mode": self.mode,
"at_hour": self.at_hour,
"idle_minutes": self.idle_minutes,
}
@classmethod
def from_dict(cls, data: Dict[str, Any]) -> "SessionResetPolicy":
return cls(
mode=data.get("mode", "both"),
at_hour=data.get("at_hour", 4),
idle_minutes=data.get("idle_minutes", 1440),
)
@dataclass
class PlatformConfig:
"""Configuration for a single messaging platform."""
enabled: bool = False
token: Optional[str] = None # Bot token (Telegram, Discord)
api_key: Optional[str] = None # API key if different from token
home_channel: Optional[HomeChannel] = None
# Platform-specific settings
extra: Dict[str, Any] = field(default_factory=dict)
def to_dict(self) -> Dict[str, Any]:
result = {
"enabled": self.enabled,
"extra": self.extra,
}
if self.token:
result["token"] = self.token
if self.api_key:
result["api_key"] = self.api_key
if self.home_channel:
result["home_channel"] = self.home_channel.to_dict()
return result
@classmethod
def from_dict(cls, data: Dict[str, Any]) -> "PlatformConfig":
home_channel = None
if "home_channel" in data:
home_channel = HomeChannel.from_dict(data["home_channel"])
return cls(
enabled=data.get("enabled", False),
token=data.get("token"),
api_key=data.get("api_key"),
home_channel=home_channel,
extra=data.get("extra", {}),
)
@dataclass
class GatewayConfig:
"""
Main gateway configuration.
Manages all platform connections, session policies, and delivery settings.
"""
# Platform configurations
platforms: Dict[Platform, PlatformConfig] = field(default_factory=dict)
# Session reset policies by type
default_reset_policy: SessionResetPolicy = field(default_factory=SessionResetPolicy)
reset_by_type: Dict[str, SessionResetPolicy] = field(default_factory=dict)
reset_by_platform: Dict[Platform, SessionResetPolicy] = field(default_factory=dict)
# Reset trigger commands
reset_triggers: List[str] = field(default_factory=lambda: ["/new", "/reset"])
# Storage paths
sessions_dir: Path = field(default_factory=lambda: Path.home() / ".hermes" / "sessions")
# Delivery settings
always_log_local: bool = True # Always save cron outputs to local files
def get_connected_platforms(self) -> List[Platform]:
"""Return list of platforms that are enabled and configured."""
connected = []
for platform, config in self.platforms.items():
if not config.enabled:
continue
# Platforms that use token/api_key auth
if config.token or config.api_key:
connected.append(platform)
# WhatsApp uses enabled flag only (bridge handles auth)
elif platform == Platform.WHATSAPP:
connected.append(platform)
# Signal uses extra dict for config (http_url + account)
elif platform == Platform.SIGNAL and config.extra.get("http_url"):
connected.append(platform)
# Email uses extra dict for config (address + imap_host + smtp_host)
elif platform == Platform.EMAIL and config.extra.get("address"):
connected.append(platform)
return connected
def get_home_channel(self, platform: Platform) -> Optional[HomeChannel]:
"""Get the home channel for a platform."""
config = self.platforms.get(platform)
if config:
return config.home_channel
return None
def get_reset_policy(
self,
platform: Optional[Platform] = None,
session_type: Optional[str] = None
) -> SessionResetPolicy:
"""
Get the appropriate reset policy for a session.
Priority: platform override > type override > default
"""
# Platform-specific override takes precedence
if platform and platform in self.reset_by_platform:
return self.reset_by_platform[platform]
# Type-specific override (dm, group, thread)
if session_type and session_type in self.reset_by_type:
return self.reset_by_type[session_type]
return self.default_reset_policy
def to_dict(self) -> Dict[str, Any]:
return {
"platforms": {
p.value: c.to_dict() for p, c in self.platforms.items()
},
"default_reset_policy": self.default_reset_policy.to_dict(),
"reset_by_type": {
k: v.to_dict() for k, v in self.reset_by_type.items()
},
"reset_by_platform": {
p.value: v.to_dict() for p, v in self.reset_by_platform.items()
},
"reset_triggers": self.reset_triggers,
"sessions_dir": str(self.sessions_dir),
"always_log_local": self.always_log_local,
}
@classmethod
def from_dict(cls, data: Dict[str, Any]) -> "GatewayConfig":
platforms = {}
for platform_name, platform_data in data.get("platforms", {}).items():
try:
platform = Platform(platform_name)
platforms[platform] = PlatformConfig.from_dict(platform_data)
except ValueError:
pass # Skip unknown platforms
reset_by_type = {}
for type_name, policy_data in data.get("reset_by_type", {}).items():
reset_by_type[type_name] = SessionResetPolicy.from_dict(policy_data)
reset_by_platform = {}
for platform_name, policy_data in data.get("reset_by_platform", {}).items():
try:
platform = Platform(platform_name)
reset_by_platform[platform] = SessionResetPolicy.from_dict(policy_data)
except ValueError:
pass
default_policy = SessionResetPolicy()
if "default_reset_policy" in data:
default_policy = SessionResetPolicy.from_dict(data["default_reset_policy"])
sessions_dir = Path.home() / ".hermes" / "sessions"
if "sessions_dir" in data:
sessions_dir = Path(data["sessions_dir"])
return cls(
platforms=platforms,
default_reset_policy=default_policy,
reset_by_type=reset_by_type,
reset_by_platform=reset_by_platform,
reset_triggers=data.get("reset_triggers", ["/new", "/reset"]),
sessions_dir=sessions_dir,
always_log_local=data.get("always_log_local", True),
)
def load_gateway_config() -> GatewayConfig:
"""
Load gateway configuration from multiple sources.
Priority (highest to lowest):
1. Environment variables
2. ~/.hermes/gateway.json
3. cli-config.yaml gateway section
4. Defaults
"""
config = GatewayConfig()
# Try loading from ~/.hermes/gateway.json
gateway_config_path = Path.home() / ".hermes" / "gateway.json"
if gateway_config_path.exists():
try:
with open(gateway_config_path, "r", encoding="utf-8") as f:
data = json.load(f)
config = GatewayConfig.from_dict(data)
except Exception as e:
print(f"[gateway] Warning: Failed to load {gateway_config_path}: {e}")
# Bridge session_reset from config.yaml (the user-facing config file)
# into the gateway config. config.yaml takes precedence over gateway.json
# for session reset policy since that's where hermes setup writes it.
try:
import yaml
config_yaml_path = Path.home() / ".hermes" / "config.yaml"
if config_yaml_path.exists():
with open(config_yaml_path, encoding="utf-8") as f:
yaml_cfg = yaml.safe_load(f) or {}
sr = yaml_cfg.get("session_reset")
if sr and isinstance(sr, dict):
config.default_reset_policy = SessionResetPolicy.from_dict(sr)
except Exception:
pass
# Override with environment variables
_apply_env_overrides(config)
# --- Validate loaded values ---
policy = config.default_reset_policy
if not (0 <= policy.at_hour <= 23):
logger.warning(
"Invalid at_hour=%s (must be 0-23). Using default 4.", policy.at_hour
)
policy.at_hour = 4
if policy.idle_minutes is None or policy.idle_minutes <= 0:
logger.warning(
"Invalid idle_minutes=%s (must be positive). Using default 1440.",
policy.idle_minutes,
)
policy.idle_minutes = 1440
# Warn about empty bot tokens — platforms that loaded an empty string
# won't connect and the cause can be confusing without a log line.
_token_env_names = {
Platform.TELEGRAM: "TELEGRAM_BOT_TOKEN",
Platform.DISCORD: "DISCORD_BOT_TOKEN",
Platform.SLACK: "SLACK_BOT_TOKEN",
}
for platform, pconfig in config.platforms.items():
if not pconfig.enabled:
continue
env_name = _token_env_names.get(platform)
if env_name and pconfig.token is not None and not pconfig.token.strip():
logger.warning(
"%s is enabled but %s is empty. "
"The adapter will likely fail to connect.",
platform.value, env_name,
)
return config
def _apply_env_overrides(config: GatewayConfig) -> None:
"""Apply environment variable overrides to config."""
# Telegram
telegram_token = os.getenv("TELEGRAM_BOT_TOKEN")
if telegram_token:
if Platform.TELEGRAM not in config.platforms:
config.platforms[Platform.TELEGRAM] = PlatformConfig()
config.platforms[Platform.TELEGRAM].enabled = True
config.platforms[Platform.TELEGRAM].token = telegram_token
telegram_home = os.getenv("TELEGRAM_HOME_CHANNEL")
if telegram_home and Platform.TELEGRAM in config.platforms:
config.platforms[Platform.TELEGRAM].home_channel = HomeChannel(
platform=Platform.TELEGRAM,
chat_id=telegram_home,
name=os.getenv("TELEGRAM_HOME_CHANNEL_NAME", "Home"),
)
# Discord
discord_token = os.getenv("DISCORD_BOT_TOKEN")
if discord_token:
if Platform.DISCORD not in config.platforms:
config.platforms[Platform.DISCORD] = PlatformConfig()
config.platforms[Platform.DISCORD].enabled = True
config.platforms[Platform.DISCORD].token = discord_token
discord_home = os.getenv("DISCORD_HOME_CHANNEL")
if discord_home and Platform.DISCORD in config.platforms:
config.platforms[Platform.DISCORD].home_channel = HomeChannel(
platform=Platform.DISCORD,
chat_id=discord_home,
name=os.getenv("DISCORD_HOME_CHANNEL_NAME", "Home"),
)
# WhatsApp (typically uses different auth mechanism)
whatsapp_enabled = os.getenv("WHATSAPP_ENABLED", "").lower() in ("true", "1", "yes")
if whatsapp_enabled:
if Platform.WHATSAPP not in config.platforms:
config.platforms[Platform.WHATSAPP] = PlatformConfig()
config.platforms[Platform.WHATSAPP].enabled = True
# Slack
slack_token = os.getenv("SLACK_BOT_TOKEN")
if slack_token:
if Platform.SLACK not in config.platforms:
config.platforms[Platform.SLACK] = PlatformConfig()
config.platforms[Platform.SLACK].enabled = True
config.platforms[Platform.SLACK].token = slack_token
# Home channel
slack_home = os.getenv("SLACK_HOME_CHANNEL")
if slack_home:
config.platforms[Platform.SLACK].home_channel = HomeChannel(
platform=Platform.SLACK,
chat_id=slack_home,
name=os.getenv("SLACK_HOME_CHANNEL_NAME", ""),
)
# Signal
signal_url = os.getenv("SIGNAL_HTTP_URL")
signal_account = os.getenv("SIGNAL_ACCOUNT")
if signal_url and signal_account:
if Platform.SIGNAL not in config.platforms:
config.platforms[Platform.SIGNAL] = PlatformConfig()
config.platforms[Platform.SIGNAL].enabled = True
config.platforms[Platform.SIGNAL].extra.update({
"http_url": signal_url,
"account": signal_account,
"ignore_stories": os.getenv("SIGNAL_IGNORE_STORIES", "true").lower() in ("true", "1", "yes"),
})
signal_home = os.getenv("SIGNAL_HOME_CHANNEL")
if signal_home:
config.platforms[Platform.SIGNAL].home_channel = HomeChannel(
platform=Platform.SIGNAL,
chat_id=signal_home,
name=os.getenv("SIGNAL_HOME_CHANNEL_NAME", "Home"),
)
# Home Assistant
hass_token = os.getenv("HASS_TOKEN")
if hass_token:
if Platform.HOMEASSISTANT not in config.platforms:
config.platforms[Platform.HOMEASSISTANT] = PlatformConfig()
config.platforms[Platform.HOMEASSISTANT].enabled = True
config.platforms[Platform.HOMEASSISTANT].token = hass_token
hass_url = os.getenv("HASS_URL")
if hass_url:
config.platforms[Platform.HOMEASSISTANT].extra["url"] = hass_url
# Email
email_addr = os.getenv("EMAIL_ADDRESS")
email_pwd = os.getenv("EMAIL_PASSWORD")
email_imap = os.getenv("EMAIL_IMAP_HOST")
email_smtp = os.getenv("EMAIL_SMTP_HOST")
if all([email_addr, email_pwd, email_imap, email_smtp]):
if Platform.EMAIL not in config.platforms:
config.platforms[Platform.EMAIL] = PlatformConfig()
config.platforms[Platform.EMAIL].enabled = True
config.platforms[Platform.EMAIL].extra.update({
"address": email_addr,
"imap_host": email_imap,
"smtp_host": email_smtp,
})
email_home = os.getenv("EMAIL_HOME_ADDRESS")
if email_home:
config.platforms[Platform.EMAIL].home_channel = HomeChannel(
platform=Platform.EMAIL,
chat_id=email_home,
name=os.getenv("EMAIL_HOME_ADDRESS_NAME", "Home"),
)
# Session settings
idle_minutes = os.getenv("SESSION_IDLE_MINUTES")
if idle_minutes:
try:
config.default_reset_policy.idle_minutes = int(idle_minutes)
except ValueError:
pass
reset_hour = os.getenv("SESSION_RESET_HOUR")
if reset_hour:
try:
config.default_reset_policy.at_hour = int(reset_hour)
except ValueError:
pass
def save_gateway_config(config: GatewayConfig) -> None:
"""Save gateway configuration to ~/.hermes/gateway.json."""
gateway_config_path = Path.home() / ".hermes" / "gateway.json"
gateway_config_path.parent.mkdir(parents=True, exist_ok=True)
with open(gateway_config_path, "w", encoding="utf-8") as f:
json.dump(config.to_dict(), f, indent=2)