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a11bef05588cab8b7423c48ed840d5ddb6f3cf05
esphome/esphome/components/api/__init__.py
Jesse Hills a11bef0558 Handle action status response without json
2025-10-07 17:25:35 +13:00

535 lines
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Python
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import base64
import logging
from esphome import automation
from esphome.automation import Condition
import esphome.codegen as cg
from esphome.config_helpers import get_logger_level
import esphome.config_validation as cv
from esphome.const import (
CONF_ACTION,
CONF_ACTIONS,
CONF_CAPTURE_RESPONSE,
CONF_DATA,
CONF_DATA_TEMPLATE,
CONF_EVENT,
CONF_ID,
CONF_KEY,
CONF_MAX_CONNECTIONS,
CONF_ON_CLIENT_CONNECTED,
CONF_ON_CLIENT_DISCONNECTED,
CONF_ON_ERROR,
CONF_ON_SUCCESS,
CONF_PASSWORD,
CONF_PORT,
CONF_REBOOT_TIMEOUT,
CONF_RESPONSE_TEMPLATE,
CONF_SERVICE,
CONF_SERVICES,
CONF_TAG,
CONF_TRIGGER_ID,
CONF_VARIABLES,
)
from esphome.core import CORE, ID, CoroPriority, coroutine_with_priority
from esphome.cpp_generator import TemplateArgsType
from esphome.types import ConfigType
_LOGGER = logging.getLogger(__name__)
DOMAIN = "api"
DEPENDENCIES = ["network"]
CODEOWNERS = ["@esphome/core"]
def AUTO_LOAD(config: ConfigType) -> list[str]:
"""Conditionally auto-load json only when capture_response is used."""
base = ["socket"]
# Check if any homeassistant.action/homeassistant.service has capture_response: true
# This flag is set during config validation in _validate_response_config
if not config or CORE.data.get(DOMAIN, {}).get(CONF_CAPTURE_RESPONSE, False):
return base + ["json"]
return base
api_ns = cg.esphome_ns.namespace("api")
APIServer = api_ns.class_("APIServer", cg.Component, cg.Controller)
HomeAssistantServiceCallAction = api_ns.class_(
"HomeAssistantServiceCallAction", automation.Action
)
ActionResponse = api_ns.class_("ActionResponse")
HomeAssistantActionResponseTrigger = api_ns.class_(
"HomeAssistantActionResponseTrigger", automation.Trigger
)
APIConnectedCondition = api_ns.class_("APIConnectedCondition", Condition)
UserServiceTrigger = api_ns.class_("UserServiceTrigger", automation.Trigger)
ListEntitiesServicesArgument = api_ns.class_("ListEntitiesServicesArgument")
SERVICE_ARG_NATIVE_TYPES = {
"bool": bool,
"int": cg.int32,
"float": float,
"string": cg.std_string,
"bool[]": cg.std_vector.template(bool),
"int[]": cg.std_vector.template(cg.int32),
"float[]": cg.std_vector.template(float),
"string[]": cg.std_vector.template(cg.std_string),
}
CONF_ENCRYPTION = "encryption"
CONF_BATCH_DELAY = "batch_delay"
CONF_CUSTOM_SERVICES = "custom_services"
CONF_HOMEASSISTANT_SERVICES = "homeassistant_services"
CONF_HOMEASSISTANT_STATES = "homeassistant_states"
CONF_LISTEN_BACKLOG = "listen_backlog"
CONF_MAX_SEND_QUEUE = "max_send_queue"
def validate_encryption_key(value):
value = cv.string_strict(value)
try:
decoded = base64.b64decode(value, validate=True)
except ValueError as err:
raise cv.Invalid("Invalid key format, please check it's using base64") from err
if len(decoded) != 32:
raise cv.Invalid("Encryption key must be base64 and 32 bytes long")
# Return original data for roundtrip conversion
return value
ACTIONS_SCHEMA = automation.validate_automation(
{
cv.GenerateID(CONF_TRIGGER_ID): cv.declare_id(UserServiceTrigger),
cv.Exclusive(CONF_SERVICE, group_of_exclusion=CONF_ACTION): cv.valid_name,
cv.Exclusive(CONF_ACTION, group_of_exclusion=CONF_ACTION): cv.valid_name,
cv.Optional(CONF_VARIABLES, default={}): cv.Schema(
{
cv.validate_id_name: cv.one_of(*SERVICE_ARG_NATIVE_TYPES, lower=True),
}
),
},
cv.All(
cv.has_exactly_one_key(CONF_SERVICE, CONF_ACTION),
cv.rename_key(CONF_SERVICE, CONF_ACTION),
),
)
ENCRYPTION_SCHEMA = cv.Schema(
{
cv.Optional(CONF_KEY): validate_encryption_key,
}
)
def _encryption_schema(config):
if config is None:
config = {}
return ENCRYPTION_SCHEMA(config)
def _validate_api_config(config: ConfigType) -> ConfigType:
"""Validate API configuration with mutual exclusivity check and deprecation warning."""
# Check if both password and encryption are configured
has_password = CONF_PASSWORD in config and config[CONF_PASSWORD]
has_encryption = CONF_ENCRYPTION in config
if has_password and has_encryption:
raise cv.Invalid(
"The 'password' and 'encryption' options are mutually exclusive. "
"The API client only supports one authentication method at a time. "
"Please remove one of them. "
"Note: 'password' authentication is deprecated and will be removed in version 2026.1.0. "
"We strongly recommend using 'encryption' instead for better security."
)
# Warn about password deprecation
if has_password:
_LOGGER.warning(
"API 'password' authentication has been deprecated since May 2022 and will be removed in version 2026.1.0. "
"Please migrate to the 'encryption' configuration. "
"See https://esphome.io/components/api.html#configuration-variables"
)
return config
CONFIG_SCHEMA = cv.All(
cv.Schema(
{
cv.GenerateID(): cv.declare_id(APIServer),
cv.Optional(CONF_PORT, default=6053): cv.port,
cv.Optional(CONF_PASSWORD, default=""): cv.string_strict,
cv.Optional(
CONF_REBOOT_TIMEOUT, default="15min"
): cv.positive_time_period_milliseconds,
cv.Exclusive(
CONF_SERVICES, group_of_exclusion=CONF_ACTIONS
): ACTIONS_SCHEMA,
cv.Exclusive(CONF_ACTIONS, group_of_exclusion=CONF_ACTIONS): ACTIONS_SCHEMA,
cv.Optional(CONF_ENCRYPTION): _encryption_schema,
cv.Optional(CONF_BATCH_DELAY, default="100ms"): cv.All(
cv.positive_time_period_milliseconds,
cv.Range(max=cv.TimePeriod(milliseconds=65535)),
),
cv.Optional(CONF_CUSTOM_SERVICES, default=False): cv.boolean,
cv.Optional(CONF_HOMEASSISTANT_SERVICES, default=False): cv.boolean,
cv.Optional(CONF_HOMEASSISTANT_STATES, default=False): cv.boolean,
cv.Optional(CONF_ON_CLIENT_CONNECTED): automation.validate_automation(
single=True
),
cv.Optional(CONF_ON_CLIENT_DISCONNECTED): automation.validate_automation(
single=True
),
# Connection limits to prevent memory exhaustion on resource-constrained devices
# Each connection uses ~500-1000 bytes of RAM plus system resources
# Platform defaults based on available RAM and network stack implementation:
cv.SplitDefault(
CONF_LISTEN_BACKLOG,
esp8266=1, # Limited RAM (~40KB free), LWIP raw sockets
esp32=4, # More RAM (520KB), BSD sockets
rp2040=1, # Limited RAM (264KB), LWIP raw sockets like ESP8266
bk72xx=4, # Moderate RAM, BSD-style sockets
rtl87xx=4, # Moderate RAM, BSD-style sockets
host=4, # Abundant resources
ln882x=4, # Moderate RAM
): cv.int_range(min=1, max=10),
cv.SplitDefault(
CONF_MAX_CONNECTIONS,
esp8266=4, # ~40KB free RAM, each connection uses ~500-1000 bytes
esp32=8, # 520KB RAM available
rp2040=4, # 264KB RAM but LWIP constraints
bk72xx=8, # Moderate RAM
rtl87xx=8, # Moderate RAM
host=8, # Abundant resources
ln882x=8, # Moderate RAM
): cv.int_range(min=1, max=20),
# Maximum queued send buffers per connection before dropping connection
# Each buffer uses ~8-12 bytes overhead plus actual message size
# Platform defaults based on available RAM and typical message rates:
cv.SplitDefault(
CONF_MAX_SEND_QUEUE,
esp8266=5, # Limited RAM, need to fail fast
esp32=8, # More RAM, can buffer more
rp2040=5, # Limited RAM
bk72xx=8, # Moderate RAM
rtl87xx=8, # Moderate RAM
host=16, # Abundant resources
ln882x=8, # Moderate RAM
): cv.int_range(min=1, max=64),
}
).extend(cv.COMPONENT_SCHEMA),
cv.rename_key(CONF_SERVICES, CONF_ACTIONS),
_validate_api_config,
)
@coroutine_with_priority(CoroPriority.WEB)
async def to_code(config):
var = cg.new_Pvariable(config[CONF_ID])
await cg.register_component(var, config)
cg.add(var.set_port(config[CONF_PORT]))
if config[CONF_PASSWORD]:
cg.add_define("USE_API_PASSWORD")
cg.add(var.set_password(config[CONF_PASSWORD]))
cg.add(var.set_reboot_timeout(config[CONF_REBOOT_TIMEOUT]))
cg.add(var.set_batch_delay(config[CONF_BATCH_DELAY]))
if CONF_LISTEN_BACKLOG in config:
cg.add(var.set_listen_backlog(config[CONF_LISTEN_BACKLOG]))
if CONF_MAX_CONNECTIONS in config:
cg.add(var.set_max_connections(config[CONF_MAX_CONNECTIONS]))
cg.add_define("API_MAX_SEND_QUEUE", config[CONF_MAX_SEND_QUEUE])
# Set USE_API_SERVICES if any services are enabled
if config.get(CONF_ACTIONS) or config[CONF_CUSTOM_SERVICES]:
cg.add_define("USE_API_SERVICES")
if config[CONF_HOMEASSISTANT_SERVICES]:
cg.add_define("USE_API_HOMEASSISTANT_SERVICES")
if config[CONF_HOMEASSISTANT_STATES]:
cg.add_define("USE_API_HOMEASSISTANT_STATES")
if actions := config.get(CONF_ACTIONS, []):
for conf in actions:
template_args = []
func_args = []
service_arg_names = []
for name, var_ in conf[CONF_VARIABLES].items():
native = SERVICE_ARG_NATIVE_TYPES[var_]
template_args.append(native)
func_args.append((native, name))
service_arg_names.append(name)
templ = cg.TemplateArguments(*template_args)
trigger = cg.new_Pvariable(
conf[CONF_TRIGGER_ID], templ, conf[CONF_ACTION], service_arg_names
)
cg.add(var.register_user_service(trigger))
await automation.build_automation(trigger, func_args, conf)
if CONF_ON_CLIENT_CONNECTED in config:
cg.add_define("USE_API_CLIENT_CONNECTED_TRIGGER")
await automation.build_automation(
var.get_client_connected_trigger(),
[(cg.std_string, "client_info"), (cg.std_string, "client_address")],
config[CONF_ON_CLIENT_CONNECTED],
)
if CONF_ON_CLIENT_DISCONNECTED in config:
cg.add_define("USE_API_CLIENT_DISCONNECTED_TRIGGER")
await automation.build_automation(
var.get_client_disconnected_trigger(),
[(cg.std_string, "client_info"), (cg.std_string, "client_address")],
config[CONF_ON_CLIENT_DISCONNECTED],
)
if (encryption_config := config.get(CONF_ENCRYPTION, None)) is not None:
if key := encryption_config.get(CONF_KEY):
decoded = base64.b64decode(key)
cg.add(var.set_noise_psk(list(decoded)))
cg.add_define("USE_API_NOISE_PSK_FROM_YAML")
else:
# No key provided, but encryption desired
# This will allow a plaintext client to provide a noise key,
# send it to the device, and then switch to noise.
# The key will be saved in flash and used for future connections
# and plaintext disabled. Only a factory reset can remove it.
cg.add_define("USE_API_PLAINTEXT")
cg.add_define("USE_API_NOISE")
cg.add_library("esphome/noise-c", "0.1.10")
else:
cg.add_define("USE_API_PLAINTEXT")
cg.add_define("USE_API")
cg.add_global(api_ns.using)
KEY_VALUE_SCHEMA = cv.Schema({cv.string: cv.templatable(cv.string_strict)})
def _validate_response_config(config: ConfigType) -> ConfigType:
# Validate dependencies:
# - response_template requires capture_response: true
# - capture_response: true requires on_success
if CONF_RESPONSE_TEMPLATE in config and not config[CONF_CAPTURE_RESPONSE]:
raise cv.Invalid(
f"`{CONF_RESPONSE_TEMPLATE}` requires `{CONF_CAPTURE_RESPONSE}: true` to be set.",
path=[CONF_RESPONSE_TEMPLATE],
)
if config[CONF_CAPTURE_RESPONSE] and CONF_ON_SUCCESS not in config:
raise cv.Invalid(
f"`{CONF_CAPTURE_RESPONSE}: true` requires `{CONF_ON_SUCCESS}` to be set.",
path=[CONF_CAPTURE_RESPONSE],
)
# Track if any action uses capture_response for AUTO_LOAD
if config[CONF_CAPTURE_RESPONSE]:
CORE.data.setdefault(DOMAIN, {})[CONF_CAPTURE_RESPONSE] = True
return config
HOMEASSISTANT_ACTION_ACTION_SCHEMA = cv.All(
cv.Schema(
{
cv.GenerateID(): cv.use_id(APIServer),
cv.Exclusive(CONF_SERVICE, group_of_exclusion=CONF_ACTION): cv.templatable(
cv.string
),
cv.Exclusive(CONF_ACTION, group_of_exclusion=CONF_ACTION): cv.templatable(
cv.string
),
cv.Optional(CONF_DATA, default={}): KEY_VALUE_SCHEMA,
cv.Optional(CONF_DATA_TEMPLATE, default={}): KEY_VALUE_SCHEMA,
cv.Optional(CONF_VARIABLES, default={}): cv.Schema(
{cv.string: cv.returning_lambda}
),
cv.Optional(CONF_RESPONSE_TEMPLATE): cv.templatable(cv.string),
cv.Optional(CONF_CAPTURE_RESPONSE, default=False): cv.boolean,
cv.Optional(CONF_ON_SUCCESS): automation.validate_automation(single=True),
cv.Optional(CONF_ON_ERROR): automation.validate_automation(single=True),
}
),
cv.has_exactly_one_key(CONF_SERVICE, CONF_ACTION),
cv.rename_key(CONF_SERVICE, CONF_ACTION),
_validate_response_config,
)
@automation.register_action(
"homeassistant.action",
HomeAssistantServiceCallAction,
HOMEASSISTANT_ACTION_ACTION_SCHEMA,
)
@automation.register_action(
"homeassistant.service",
HomeAssistantServiceCallAction,
HOMEASSISTANT_ACTION_ACTION_SCHEMA,
)
async def homeassistant_service_to_code(
config: ConfigType,
action_id: ID,
template_arg: cg.TemplateArguments,
args: TemplateArgsType,
):
cg.add_define("USE_API_HOMEASSISTANT_SERVICES")
serv = await cg.get_variable(config[CONF_ID])
var = cg.new_Pvariable(action_id, template_arg, serv, False)
templ = await cg.templatable(config[CONF_ACTION], args, None)
cg.add(var.set_service(templ))
for key, value in config[CONF_DATA].items():
templ = await cg.templatable(value, args, None)
cg.add(var.add_data(key, templ))
for key, value in config[CONF_DATA_TEMPLATE].items():
templ = await cg.templatable(value, args, None)
cg.add(var.add_data_template(key, templ))
for key, value in config[CONF_VARIABLES].items():
templ = await cg.templatable(value, args, None)
cg.add(var.add_variable(key, templ))
if on_error := config.get(CONF_ON_ERROR):
cg.add_define("USE_API_HOMEASSISTANT_ACTION_RESPONSES")
cg.add_define("USE_API_HOMEASSISTANT_ACTION_RESPONSES_ERRORS")
cg.add(var.set_wants_status())
await automation.build_automation(
var.get_error_trigger(),
[(cg.std_string, "error"), *args],
on_error,
)
if on_success := config.get(CONF_ON_SUCCESS):
cg.add_define("USE_API_HOMEASSISTANT_ACTION_RESPONSES")
cg.add(var.set_wants_status())
if config[CONF_CAPTURE_RESPONSE]:
cg.add(var.set_wants_response())
cg.add_define("USE_API_HOMEASSISTANT_ACTION_RESPONSES_JSON")
await automation.build_automation(
var.get_success_trigger_with_response(),
[(cg.JsonObject, "response"), *args],
on_success,
)
if response_template := config.get(CONF_RESPONSE_TEMPLATE):
templ = await cg.templatable(response_template, args, cg.std_string)
cg.add(var.set_response_template(templ))
else:
await automation.build_automation(
var.get_success_trigger(),
args,
on_success,
)
return var
def validate_homeassistant_event(value):
value = cv.string(value)
if not value.startswith("esphome."):
raise cv.Invalid(
"ESPHome can only generate Home Assistant events that begin with "
"esphome. For example 'esphome.xyz'"
)
return value
HOMEASSISTANT_EVENT_ACTION_SCHEMA = cv.Schema(
{
cv.GenerateID(): cv.use_id(APIServer),
cv.Required(CONF_EVENT): validate_homeassistant_event,
cv.Optional(CONF_DATA, default={}): KEY_VALUE_SCHEMA,
cv.Optional(CONF_DATA_TEMPLATE, default={}): KEY_VALUE_SCHEMA,
cv.Optional(CONF_VARIABLES, default={}): KEY_VALUE_SCHEMA,
}
)
@automation.register_action(
"homeassistant.event",
HomeAssistantServiceCallAction,
HOMEASSISTANT_EVENT_ACTION_SCHEMA,
)
async def homeassistant_event_to_code(config, action_id, template_arg, args):
cg.add_define("USE_API_HOMEASSISTANT_SERVICES")
serv = await cg.get_variable(config[CONF_ID])
var = cg.new_Pvariable(action_id, template_arg, serv, True)
templ = await cg.templatable(config[CONF_EVENT], args, None)
cg.add(var.set_service(templ))
for key, value in config[CONF_DATA].items():
templ = await cg.templatable(value, args, None)
cg.add(var.add_data(key, templ))
for key, value in config[CONF_DATA_TEMPLATE].items():
templ = await cg.templatable(value, args, None)
cg.add(var.add_data_template(key, templ))
for key, value in config[CONF_VARIABLES].items():
templ = await cg.templatable(value, args, None)
cg.add(var.add_variable(key, templ))
return var
HOMEASSISTANT_TAG_SCANNED_ACTION_SCHEMA = cv.maybe_simple_value(
{
cv.GenerateID(): cv.use_id(APIServer),
cv.Required(CONF_TAG): cv.templatable(cv.string_strict),
},
key=CONF_TAG,
)
@automation.register_action(
"homeassistant.tag_scanned",
HomeAssistantServiceCallAction,
HOMEASSISTANT_TAG_SCANNED_ACTION_SCHEMA,
)
async def homeassistant_tag_scanned_to_code(config, action_id, template_arg, args):
cg.add_define("USE_API_HOMEASSISTANT_SERVICES")
serv = await cg.get_variable(config[CONF_ID])
var = cg.new_Pvariable(action_id, template_arg, serv, True)
cg.add(var.set_service("esphome.tag_scanned"))
templ = await cg.templatable(config[CONF_TAG], args, cg.std_string)
cg.add(var.add_data("tag_id", templ))
return var
@automation.register_condition("api.connected", APIConnectedCondition, {})
async def api_connected_to_code(config, condition_id, template_arg, args):
return cg.new_Pvariable(condition_id, template_arg)
def FILTER_SOURCE_FILES() -> list[str]:
"""Filter out api_pb2_dump.cpp when proto message dumping is not enabled,
user_services.cpp when no services are defined, and protocol-specific
implementations based on encryption configuration."""
files_to_filter: list[str] = []
# api_pb2_dump.cpp is only needed when HAS_PROTO_MESSAGE_DUMP is defined
# This is a particularly large file that still needs to be opened and read
# all the way to the end even when ifdef'd out
#
# HAS_PROTO_MESSAGE_DUMP is defined when ESPHOME_LOG_HAS_VERY_VERBOSE is set,
# which happens when the logger level is VERY_VERBOSE
if get_logger_level() != "VERY_VERBOSE":
files_to_filter.append("api_pb2_dump.cpp")
# user_services.cpp is only needed when services are defined
config = CORE.config.get(DOMAIN, {})
if config and not config.get(CONF_ACTIONS) and not config[CONF_CUSTOM_SERVICES]:
files_to_filter.append("user_services.cpp")
# Filter protocol-specific implementations based on encryption configuration
encryption_config = config.get(CONF_ENCRYPTION) if config else None
# If encryption is not configured at all, we only need plaintext
if encryption_config is None:
files_to_filter.append("api_frame_helper_noise.cpp")
# If encryption is configured with a key, we only need noise
elif encryption_config.get(CONF_KEY):
files_to_filter.append("api_frame_helper_plaintext.cpp")
# If encryption is configured but no key is provided, we need both
# (this allows a plaintext client to provide a noise key)
return files_to_filter
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