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79 lines
2.3 KiB
Python
79 lines
2.3 KiB
Python
import hashlib
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from typing import Any
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import esphome.codegen as cg
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from esphome.components import esp32, update
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import esphome.config_validation as cv
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from esphome.const import CONF_PATH, CONF_RAW_DATA_ID
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from esphome.core import CORE, HexInt
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CODEOWNERS = ["@swoboda1337"]
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AUTO_LOAD = ["sha256", "watchdog"]
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DEPENDENCIES = ["esp32_hosted"]
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CONF_SHA256 = "sha256"
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esp32_hosted_ns = cg.esphome_ns.namespace("esp32_hosted")
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Esp32HostedUpdate = esp32_hosted_ns.class_(
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"Esp32HostedUpdate", update.UpdateEntity, cg.Component
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)
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def _validate_sha256(value: Any) -> str:
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value = cv.string_strict(value)
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if len(value) != 64:
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raise cv.Invalid("SHA256 must be 64 hexadecimal characters")
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try:
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bytes.fromhex(value)
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except ValueError as e:
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raise cv.Invalid(f"SHA256 must be valid hexadecimal: {e}") from e
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return value
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CONFIG_SCHEMA = cv.All(
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update.update_schema(Esp32HostedUpdate, device_class="firmware").extend(
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{
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cv.GenerateID(CONF_RAW_DATA_ID): cv.declare_id(cg.uint8),
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cv.Required(CONF_PATH): cv.file_,
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cv.Required(CONF_SHA256): _validate_sha256,
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}
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),
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esp32.only_on_variant(
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supported=[
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esp32.const.VARIANT_ESP32H2,
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esp32.const.VARIANT_ESP32P4,
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]
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),
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)
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def _validate_firmware(config: dict[str, Any]) -> None:
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path = CORE.relative_config_path(config[CONF_PATH])
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with open(path, "rb") as f:
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firmware_data = f.read()
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calculated = hashlib.sha256(firmware_data).hexdigest()
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expected = config[CONF_SHA256].lower()
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if calculated != expected:
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raise cv.Invalid(
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f"SHA256 mismatch for {config[CONF_PATH]}: expected {expected}, got {calculated}"
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)
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FINAL_VALIDATE_SCHEMA = _validate_firmware
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async def to_code(config: dict[str, Any]) -> None:
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var = await update.new_update(config)
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path = config[CONF_PATH]
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with open(CORE.relative_config_path(path), "rb") as f:
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firmware_data = f.read()
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rhs = [HexInt(x) for x in firmware_data]
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prog_arr = cg.progmem_array(config[CONF_RAW_DATA_ID], rhs)
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sha256_bytes = bytes.fromhex(config[CONF_SHA256])
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cg.add(var.set_firmware_sha256([HexInt(b) for b in sha256_bytes]))
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cg.add(var.set_firmware_data(prog_arr))
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cg.add(var.set_firmware_size(len(firmware_data)))
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await cg.register_component(var, config)
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