esphome/esphomeyaml/config_validation.py

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# coding=utf-8
"""Helpers for config validation using voluptuous."""
from __future__ import print_function
import logging
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import re
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import voluptuous as vol
from esphomeyaml import core
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from esphomeyaml.const import CONF_AVAILABILITY, CONF_COMMAND_TOPIC, CONF_DISCOVERY, CONF_ID, \
CONF_NAME, CONF_PAYLOAD_AVAILABLE, \
CONF_PAYLOAD_NOT_AVAILABLE, CONF_PLATFORM, CONF_RETAIN, CONF_STATE_TOPIC, CONF_TOPIC, \
ESP_PLATFORM_ESP32, ESP_PLATFORM_ESP8266
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from esphomeyaml.core import HexInt, IPAddress, Lambda, TimePeriod, TimePeriodMicroseconds, \
TimePeriodMilliseconds, TimePeriodSeconds
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_LOGGER = logging.getLogger(__name__)
# pylint: disable=invalid-name
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port = vol.All(vol.Coerce(int), vol.Range(min=1, max=65535))
positive_float = vol.All(vol.Coerce(float), vol.Range(min=0))
zero_to_one_float = vol.All(vol.Coerce(float), vol.Range(min=0, max=1))
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positive_int = vol.All(vol.Coerce(int), vol.Range(min=0))
positive_not_null_int = vol.All(vol.Coerce(int), vol.Range(min=0, min_included=False))
ALLOWED_NAME_CHARS = u'abcdefghijklmnopqrstuvwxyz0123456789_'
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RESERVED_IDS = [
# C++ keywords http://en.cppreference.com/w/cpp/keyword
'alignas', 'alignof', 'and', 'and_eq', 'asm', 'auto', 'bitand', 'bitor', 'bool', 'break',
'case', 'catch', 'char', 'char16_t', 'char32_t', 'class', 'compl', 'concept', 'const',
'constexpr', 'const_cast', 'continue', 'decltype', 'default', 'delete', 'do', 'double',
'dynamic_cast', 'else', 'enum', 'explicit', 'export', 'export', 'extern', 'false', 'float',
'for', 'friend', 'goto', 'if', 'inline', 'int', 'long', 'mutable', 'namespace', 'new',
'noexcept', 'not', 'not_eq', 'nullptr', 'operator', 'or', 'or_eq', 'private', 'protected',
'public', 'register', 'reinterpret_cast', 'requires', 'return', 'short', 'signed', 'sizeof',
'static', 'static_assert', 'static_cast', 'struct', 'switch', 'template', 'this',
'thread_local', 'throw', 'true', 'try', 'typedef', 'typeid', 'typename', 'union', 'unsigned',
'using', 'virtual', 'void', 'volatile', 'wchar_t', 'while', 'xor', 'xor_eq',
'App', 'pinMode', 'delay', 'delayMicroseconds', 'digitalRead', 'digitalWrite', 'INPUT',
'OUTPUT',
]
def alphanumeric(value):
if value is None:
raise vol.Invalid("string value is None")
value = unicode(value)
if not value.isalnum():
raise vol.Invalid("string value is not alphanumeric")
return value
def valid_name(value):
value = string_strict(value)
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for c in value:
if c not in ALLOWED_NAME_CHARS:
raise vol.Invalid(u"'{}' is an invalid character for names. Valid characters are: {}"
u"".format(c, ALLOWED_NAME_CHARS))
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return value
def string(value):
if isinstance(value, (dict, list)):
raise vol.Invalid("string value cannot be dictionary or list.")
if value is not None:
return unicode(value)
raise vol.Invalid("string value is None")
def string_strict(value):
"""Strictly only allow strings."""
if isinstance(value, (str, unicode)):
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return value
raise vol.Invalid("Must be string, did you forget putting quotes "
"around the value?")
def icon(value):
"""Validate icon."""
value = string_strict(value)
if value.startswith('mdi:'):
return value
raise vol.Invalid('Icons should start with prefix "mdi:"')
def boolean(value):
"""Validate and coerce a boolean value."""
if isinstance(value, str):
value = value.lower()
if value in ('1', 'true', 'yes', 'on', 'enable'):
return True
if value in ('0', 'false', 'no', 'off', 'disable'):
return False
raise vol.Invalid('invalid boolean value {}'.format(value))
return bool(value)
def ensure_list(value):
"""Wrap value in list if it is not one."""
if value is None:
return []
if isinstance(value, list):
return value
return [value]
def ensure_dict(value):
if value is None:
return {}
if not isinstance(value, dict):
raise vol.Invalid("Expected a dictionary")
return value
def hex_int_(value):
if isinstance(value, (int, long)):
return HexInt(value)
value = string_strict(value).lower()
if value.startswith('0x'):
return HexInt(int(value, 16))
return HexInt(int(value))
def int_(value):
if isinstance(value, (int, long)):
return value
value = string_strict(value).lower()
if value.startswith('0x'):
return int(value, 16)
return int(value)
hex_int = vol.Coerce(hex_int_)
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def variable_id_str_(value):
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value = string(value)
if not value:
raise vol.Invalid("ID must not be empty")
if value[0].isdigit():
raise vol.Invalid("First character in ID cannot be a digit.")
if '-' in value:
raise vol.Invalid("Dashes are not supported in IDs, please use underscores instead.")
for char in value:
if char != '_' and not char.isalnum():
raise vol.Invalid(u"IDs must only consist of upper/lowercase characters and numbers."
u"The character '{}' cannot be used".format(char))
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if value in RESERVED_IDS:
raise vol.Invalid(u"ID {} is reserved internally and cannot be used".format(value))
return value
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def use_variable_id(type):
def validator(value):
if value is None:
return core.ID(None, is_declaration=False, type=type)
return core.ID(variable_id_str_(value), is_declaration=False, type=type)
return validator
def declare_variable_id(type):
def validator(value):
if value is None:
return core.ID(None, is_declaration=True, type=type)
return core.ID(variable_id_str_(value), is_declaration=True, type=type)
return validator
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def templatable(other_validators):
def validator(value):
if isinstance(value, Lambda):
return value
return other_validators(value)
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return validator
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def only_on(platforms):
if not isinstance(platforms, list):
platforms = [platforms]
def validator_(obj):
if core.ESP_PLATFORM not in platforms:
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raise vol.Invalid(u"This feature is only available on {}".format(platforms))
return obj
return validator_
only_on_esp32 = only_on(ESP_PLATFORM_ESP32)
only_on_esp8266 = only_on(ESP_PLATFORM_ESP8266)
# Adapted from:
# https://github.com/alecthomas/voluptuous/issues/115#issuecomment-144464666
def has_at_least_one_key(*keys):
"""Validate that at least one key exists."""
def validate(obj):
"""Test keys exist in dict."""
if not isinstance(obj, dict):
raise vol.Invalid('expected dictionary')
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if not any(k in keys for k in obj):
raise vol.Invalid('Must contain at least one of {}.'.format(', '.join(keys)))
return obj
return validate
def has_exactly_one_key(*keys):
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def validate(obj):
if not isinstance(obj, dict):
raise vol.Invalid('expected dictionary')
number = sum(k in keys for k in obj)
if number > 1:
raise vol.Invalid("Cannot specify more than one of {}.".format(', '.join(keys)))
if number < 1:
raise vol.Invalid('Must contain exactly one of {}.'.format(', '.join(keys)))
return obj
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return validate
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TIME_PERIOD_ERROR = "Time period {} should be format number + unit, for example 5ms, 5s, 5min, 5h"
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time_period_dict = vol.All(
dict, vol.Schema({
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'days': vol.Coerce(float),
'hours': vol.Coerce(float),
'minutes': vol.Coerce(float),
'seconds': vol.Coerce(float),
'milliseconds': vol.Coerce(float),
'microseconds': vol.Coerce(float),
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}),
has_at_least_one_key('days', 'hours', 'minutes',
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'seconds', 'milliseconds', 'microseconds'),
lambda value: TimePeriod(**value))
TIME_PERIOD_EXPLICIT_MESSAGE = ("The old way of being able to write time values without a "
"time unit (like \"1000\" for 1000 milliseconds) has been "
"removed in 1.5.0 as it was ambiguous in some places. Please "
"now explicitly specify the time unit (like \"1000ms\"). See "
"https://esphomelib.com/esphomeyaml/configuration-types.html#time "
"for more information.")
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def time_period_str_colon(value):
"""Validate and transform time offset with format HH:MM[:SS]."""
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if isinstance(value, int):
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raise vol.Invalid('Make sure you wrap time values in quotes')
elif not isinstance(value, str):
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raise vol.Invalid(TIME_PERIOD_ERROR.format(value))
try:
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parsed = [int(x) for x in value.split(':')]
except ValueError:
raise vol.Invalid(TIME_PERIOD_ERROR.format(value))
if len(parsed) == 2:
hour, minute = parsed
second = 0
elif len(parsed) == 3:
hour, minute, second = parsed
else:
raise vol.Invalid(TIME_PERIOD_ERROR.format(value))
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return TimePeriod(hours=hour, minutes=minute, seconds=second)
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def time_period_str_unit(value):
"""Validate and transform time period with time unit and integer value."""
if isinstance(value, int):
value = str(value)
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elif not isinstance(value, (str, unicode)):
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raise vol.Invalid("Expected string for time period with unit.")
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try:
float(value)
except ValueError:
pass
else:
raise vol.Invalid(TIME_PERIOD_EXPLICIT_MESSAGE)
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unit_to_kwarg = {
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'us': 'microseconds',
'microseconds': 'microseconds',
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'ms': 'milliseconds',
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'milliseconds': 'milliseconds',
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's': 'seconds',
'sec': 'seconds',
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'seconds': 'seconds',
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'min': 'minutes',
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'minutes': 'minutes',
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'h': 'hours',
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'hours': 'hours',
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'd': 'days',
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'days': 'days',
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}
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match = re.match(r"^([-+]?[0-9]*\.?[0-9]*)\s*(\w*)$", value)
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if match is None or match.group(2) not in unit_to_kwarg:
raise vol.Invalid(u"Expected time period with unit, "
u"got {}".format(value))
kwarg = unit_to_kwarg[match.group(2)]
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return TimePeriod(**{kwarg: float(match.group(1))})
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def time_period_in_milliseconds_(value):
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if value.microseconds is not None and value.microseconds != 0:
raise vol.Invalid("Maximum precision is milliseconds")
return TimePeriodMilliseconds(**value.as_dict())
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def time_period_in_microseconds_(value):
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return TimePeriodMicroseconds(**value.as_dict())
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def time_period_in_seconds_(value):
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if value.microseconds is not None and value.microseconds != 0:
raise vol.Invalid("Maximum precision is seconds")
if value.milliseconds is not None and value.milliseconds != 0:
raise vol.Invalid("Maximum precision is seconds")
return TimePeriodSeconds(**value.as_dict())
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time_period = vol.Any(time_period_str_unit, time_period_str_colon, time_period_dict)
positive_time_period = vol.All(time_period, vol.Range(min=TimePeriod()))
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positive_time_period_milliseconds = vol.All(positive_time_period, time_period_in_milliseconds_)
positive_time_period_seconds = vol.All(positive_time_period, time_period_in_seconds_)
positive_time_period_microseconds = vol.All(positive_time_period, time_period_in_microseconds_)
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positive_not_null_time_period = vol.All(time_period,
vol.Range(min=TimePeriod(), min_included=False))
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METRIC_SUFFIXES = {
'E': 1e18, 'P': 1e15, 'T': 1e12, 'G': 1e9, 'M': 1e6, 'k': 1e3, 'da': 10, 'd': 1e-1,
'c': 1e-2, 'm': 0.001, u'µ': 1e-6, 'u': 1e-6, 'n': 1e-9, 'p': 1e-12, 'f': 1e-15, 'a': 1e-18,
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'': 1
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}
def frequency(value):
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value = string(value)
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match = re.match(r"^([-+]?[0-9]*\.?[0-9]*)\s*(\w*?)(?:Hz|HZ|hz)?$", value)
if match is None:
raise vol.Invalid(u"Expected frequency with unit, "
u"got {}".format(value))
mantissa = float(match.group(1))
if match.group(2) not in METRIC_SUFFIXES:
raise vol.Invalid(u"Invalid frequency suffix {}".format(match.group(2)))
multiplier = METRIC_SUFFIXES[match.group(2)]
return mantissa * multiplier
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def hostname(value):
value = string(value)
if len(value) > 63:
raise vol.Invalid("Hostnames can only be 63 characters long")
for c in value:
if not (c.isalnum() or c in '_-'):
raise vol.Invalid("Hostname can only have alphanumeric characters and _ or -")
return value
def domainname(value):
value = string(value)
if not value.startswith('.'):
raise vol.Invalid("Domainname must start with .")
if value.startswith('..'):
raise vol.Invalid("Domainname must start with single .")
for c in value:
if not (c.isalnum() or c in '._-'):
raise vol.Invalid("Domainname can only have alphanumeric characters and _ or -")
return value
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def ssid(value):
if value is None:
raise vol.Invalid("SSID can not be None")
if not isinstance(value, str):
raise vol.Invalid("SSID must be a string. Did you wrap it in quotes?")
if not value:
raise vol.Invalid("SSID can't be empty.")
if len(value) > 31:
raise vol.Invalid("SSID can't be longer than 31 characters")
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return value
def ipv4(value):
if isinstance(value, list):
parts = value
elif isinstance(value, str):
parts = value.split('.')
else:
raise vol.Invalid("IPv4 address must consist of either string or "
"integer list")
if len(parts) != 4:
raise vol.Invalid("IPv4 address must consist of four point-separated "
"integers")
parts_ = list(map(int, parts))
if not all(0 <= x < 256 for x in parts_):
raise vol.Invalid("IPv4 address parts must be in range from 0 to 255")
return IPAddress(*parts_)
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def _valid_topic(value):
"""Validate that this is a valid topic name/filter."""
if isinstance(value, dict):
raise vol.Invalid("Can't use dictionary with topic")
value = string(value)
try:
raw_value = value.encode('utf-8')
except UnicodeError:
raise vol.Invalid("MQTT topic name/filter must be valid UTF-8 string.")
if not raw_value:
raise vol.Invalid("MQTT topic name/filter must not be empty.")
if len(raw_value) > 65535:
raise vol.Invalid("MQTT topic name/filter must not be longer than "
"65535 encoded bytes.")
if '\0' in value:
raise vol.Invalid("MQTT topic name/filter must not contain null "
"character.")
return value
def subscribe_topic(value):
"""Validate that we can subscribe using this MQTT topic."""
value = _valid_topic(value)
for i in (i for i, c in enumerate(value) if c == '+'):
if (i > 0 and value[i - 1] != '/') or \
(i < len(value) - 1 and value[i + 1] != '/'):
raise vol.Invalid("Single-level wildcard must occupy an entire "
"level of the filter")
index = value.find('#')
if index != -1:
if index != len(value) - 1:
# If there are multiple wildcards, this will also trigger
raise vol.Invalid("Multi-level wildcard must be the last "
"character in the topic filter.")
if len(value) > 1 and value[index - 1] != '/':
raise vol.Invalid("Multi-level wildcard must be after a topic "
"level separator.")
return value
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def publish_topic(value):
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"""Validate that we can publish using this MQTT topic."""
value = _valid_topic(value)
if '+' in value or '#' in value:
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raise vol.Invalid("Wildcards can not be used in topic names")
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return value
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def mqtt_payload(value):
if value is None:
return ''
return string(value)
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def mqtt_qos(value):
try:
value = int(value)
except (TypeError, ValueError):
raise vol.Invalid(u"MQTT Quality of Service must be integer, got {}".format(value))
return one_of(0, 1, 2)(value)
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uint8_t = vol.All(int_, vol.Range(min=0, max=255))
uint16_t = vol.All(int_, vol.Range(min=0, max=65535))
uint32_t = vol.All(int_, vol.Range(min=0, max=4294967295))
hex_uint8_t = vol.All(hex_int, vol.Range(min=0, max=255))
hex_uint16_t = vol.All(hex_int, vol.Range(min=0, max=65535))
hex_uint32_t = vol.All(hex_int, vol.Range(min=0, max=4294967295))
i2c_address = hex_uint8_t
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def percentage(value):
if isinstance(value, (str, unicode)) and value.endswith('%'):
value = float(value[:-1].rstrip()) / 100.0
return zero_to_one_float(value)
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def invalid(message):
def validator(value):
raise vol.Invalid(message)
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return validator
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def valid(value):
return value
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def one_of(*values):
options = u', '.join(u"'{}'".format(x) for x in values)
def validator(value):
if value not in values:
raise vol.Invalid(u"Unknown value '{}', must be one of {}".format(value, options))
return value
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return validator
def lambda_(value):
if isinstance(value, Lambda):
return value
return Lambda(string_strict(value))
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REGISTERED_IDS = set()
class GenerateID(vol.Optional):
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def __init__(self, key=CONF_ID):
super(GenerateID, self).__init__(key, default=lambda: None)
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PLATFORM_SCHEMA = vol.Schema({
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vol.Required(CONF_PLATFORM): valid,
})
MQTT_COMPONENT_AVAILABILITY_SCHEMA = vol.Schema({
vol.Required(CONF_TOPIC): subscribe_topic,
vol.Optional(CONF_PAYLOAD_AVAILABLE, default='online'): mqtt_payload,
vol.Optional(CONF_PAYLOAD_NOT_AVAILABLE, default='offline'): mqtt_payload,
})
MQTT_COMPONENT_SCHEMA = vol.Schema({
vol.Required(CONF_NAME): string,
vol.Optional(CONF_RETAIN): boolean,
vol.Optional(CONF_DISCOVERY): boolean,
vol.Optional(CONF_STATE_TOPIC): publish_topic,
vol.Optional(CONF_AVAILABILITY): MQTT_COMPONENT_AVAILABILITY_SCHEMA,
})
MQTT_COMMAND_COMPONENT_SCHEMA = MQTT_COMPONENT_SCHEMA.extend({
vol.Optional(CONF_COMMAND_TOPIC): subscribe_topic,
})