mirror of https://github.com/esphome/esphome.git
293 lines
9.7 KiB
Python
293 lines
9.7 KiB
Python
import hashlib
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import logging
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import random
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import socket
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import sys
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import time
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from esphome.core import EsphomeError
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from esphome.helpers import is_ip_address, resolve_ip_address
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RESPONSE_OK = 0
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RESPONSE_REQUEST_AUTH = 1
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RESPONSE_HEADER_OK = 64
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RESPONSE_AUTH_OK = 65
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RESPONSE_UPDATE_PREPARE_OK = 66
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RESPONSE_BIN_MD5_OK = 67
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RESPONSE_RECEIVE_OK = 68
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RESPONSE_UPDATE_END_OK = 69
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RESPONSE_ERROR_MAGIC = 128
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RESPONSE_ERROR_UPDATE_PREPARE = 129
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RESPONSE_ERROR_AUTH_INVALID = 130
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RESPONSE_ERROR_WRITING_FLASH = 131
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RESPONSE_ERROR_UPDATE_END = 132
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RESPONSE_ERROR_INVALID_BOOTSTRAPPING = 133
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RESPONSE_ERROR_WRONG_CURRENT_FLASH_CONFIG = 134
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RESPONSE_ERROR_WRONG_NEW_FLASH_CONFIG = 135
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RESPONSE_ERROR_ESP8266_NOT_ENOUGH_SPACE = 136
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RESPONSE_ERROR_ESP32_NOT_ENOUGH_SPACE = 137
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RESPONSE_ERROR_UNKNOWN = 255
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OTA_VERSION_1_0 = 1
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MAGIC_BYTES = [0x6C, 0x26, 0xF7, 0x5C, 0x45]
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_LOGGER = logging.getLogger(__name__)
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class ProgressBar:
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def __init__(self):
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self.last_progress = None
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def update(self, progress):
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bar_length = 60
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status = ""
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if progress >= 1:
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progress = 1
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status = "Done...\r\n"
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new_progress = int(progress * 100)
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if new_progress == self.last_progress:
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return
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self.last_progress = new_progress
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block = int(round(bar_length * progress))
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text = "\rUploading: [{0}] {1}% {2}".format("=" * block + " " * (bar_length - block),
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new_progress, status)
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sys.stderr.write(text)
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sys.stderr.flush()
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# pylint: disable=no-self-use
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def done(self):
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sys.stderr.write('\n')
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sys.stderr.flush()
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class OTAError(EsphomeError):
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pass
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def recv_decode(sock, amount, decode=True):
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data = sock.recv(amount)
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if not decode:
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return data
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return list(data)
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def receive_exactly(sock, amount, msg, expect, decode=True):
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if decode:
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data = []
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else:
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data = b''
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try:
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data += recv_decode(sock, 1, decode=decode)
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except OSError as err:
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raise OTAError(f"Error receiving acknowledge {msg}: {err}")
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try:
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check_error(data, expect)
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except OTAError as err:
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sock.close()
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raise OTAError(f"Error {msg}: {err}")
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while len(data) < amount:
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try:
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data += recv_decode(sock, amount - len(data), decode=decode)
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except OSError as err:
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raise OTAError(f"Error receiving {msg}: {err}")
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return data
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def check_error(data, expect):
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if not expect:
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return
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dat = data[0]
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if dat == RESPONSE_ERROR_MAGIC:
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raise OTAError("Error: Invalid magic byte")
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if dat == RESPONSE_ERROR_UPDATE_PREPARE:
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raise OTAError("Error: Couldn't prepare flash memory for update. Is the binary too big? "
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"Please try restarting the ESP.")
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if dat == RESPONSE_ERROR_AUTH_INVALID:
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raise OTAError("Error: Authentication invalid. Is the password correct?")
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if dat == RESPONSE_ERROR_WRITING_FLASH:
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raise OTAError("Error: Wring OTA data to flash memory failed. See USB logs for more "
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"information.")
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if dat == RESPONSE_ERROR_UPDATE_END:
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raise OTAError("Error: Finishing update failed. See the MQTT/USB logs for more "
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"information.")
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if dat == RESPONSE_ERROR_INVALID_BOOTSTRAPPING:
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raise OTAError("Error: Please press the reset button on the ESP. A manual reset is "
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"required on the first OTA-Update after flashing via USB.")
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if dat == RESPONSE_ERROR_WRONG_CURRENT_FLASH_CONFIG:
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raise OTAError("Error: ESP has been flashed with wrong flash size. Please choose the "
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"correct 'board' option (esp01_1m always works) and then flash over USB.")
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if dat == RESPONSE_ERROR_WRONG_NEW_FLASH_CONFIG:
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raise OTAError("Error: ESP does not have the requested flash size (wrong board). Please "
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"choose the correct 'board' option (esp01_1m always works) and try "
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"uploading again.")
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if dat == RESPONSE_ERROR_ESP8266_NOT_ENOUGH_SPACE:
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raise OTAError("Error: ESP does not have enough space to store OTA file. Please try "
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"flashing a minimal firmware (remove everything except ota)")
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if dat == RESPONSE_ERROR_ESP32_NOT_ENOUGH_SPACE:
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raise OTAError("Error: The OTA partition on the ESP is too small. ESPHome needs to resize "
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"this partition, please flash over USB.")
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if dat == RESPONSE_ERROR_UNKNOWN:
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raise OTAError("Unknown error from ESP")
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if not isinstance(expect, (list, tuple)):
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expect = [expect]
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if dat not in expect:
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raise OTAError("Unexpected response from ESP: 0x{:02X}".format(data[0]))
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def send_check(sock, data, msg):
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try:
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if isinstance(data, (list, tuple)):
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data = bytes(data)
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elif isinstance(data, int):
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data = bytes([data])
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elif isinstance(data, str):
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data = data.encode('utf8')
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sock.sendall(data)
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except OSError as err:
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raise OTAError(f"Error sending {msg}: {err}")
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def perform_ota(sock, password, file_handle, filename):
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file_md5 = hashlib.md5(file_handle.read()).hexdigest()
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file_size = file_handle.tell()
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_LOGGER.info('Uploading %s (%s bytes)', filename, file_size)
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file_handle.seek(0)
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_LOGGER.debug("MD5 of binary is %s", file_md5)
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# Enable nodelay, we need it for phase 1
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sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)
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send_check(sock, MAGIC_BYTES, 'magic bytes')
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_, version = receive_exactly(sock, 2, 'version', RESPONSE_OK)
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if version != OTA_VERSION_1_0:
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raise OTAError(f"Unsupported OTA version {version}")
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# Features
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send_check(sock, 0x00, 'features')
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receive_exactly(sock, 1, 'features', RESPONSE_HEADER_OK)
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auth, = receive_exactly(sock, 1, 'auth', [RESPONSE_REQUEST_AUTH, RESPONSE_AUTH_OK])
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if auth == RESPONSE_REQUEST_AUTH:
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if not password:
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raise OTAError("ESP requests password, but no password given!")
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nonce = receive_exactly(sock, 32, 'authentication nonce', [], decode=False).decode()
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_LOGGER.debug("Auth: Nonce is %s", nonce)
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cnonce = hashlib.md5(str(random.random()).encode()).hexdigest()
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_LOGGER.debug("Auth: CNonce is %s", cnonce)
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send_check(sock, cnonce, 'auth cnonce')
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result_md5 = hashlib.md5()
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result_md5.update(password.encode('utf-8'))
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result_md5.update(nonce.encode())
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result_md5.update(cnonce.encode())
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result = result_md5.hexdigest()
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_LOGGER.debug("Auth: Result is %s", result)
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send_check(sock, result, 'auth result')
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receive_exactly(sock, 1, 'auth result', RESPONSE_AUTH_OK)
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file_size_encoded = [
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(file_size >> 24) & 0xFF,
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(file_size >> 16) & 0xFF,
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(file_size >> 8) & 0xFF,
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(file_size >> 0) & 0xFF,
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]
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send_check(sock, file_size_encoded, 'binary size')
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receive_exactly(sock, 1, 'binary size', RESPONSE_UPDATE_PREPARE_OK)
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send_check(sock, file_md5, 'file checksum')
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receive_exactly(sock, 1, 'file checksum', RESPONSE_BIN_MD5_OK)
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# Disable nodelay for transfer
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sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 0)
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# Limit send buffer (usually around 100kB) in order to have progress bar
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# show the actual progress
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sock.setsockopt(socket.SOL_SOCKET, socket.SO_SNDBUF, 8192)
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# Set higher timeout during upload
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sock.settimeout(20.0)
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offset = 0
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progress = ProgressBar()
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while True:
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chunk = file_handle.read(1024)
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if not chunk:
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break
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offset += len(chunk)
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try:
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sock.sendall(chunk)
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except OSError as err:
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sys.stderr.write('\n')
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raise OTAError(f"Error sending data: {err}")
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progress.update(offset / float(file_size))
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progress.done()
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# Enable nodelay for last checks
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sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)
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_LOGGER.info("Waiting for result...")
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receive_exactly(sock, 1, 'receive OK', RESPONSE_RECEIVE_OK)
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receive_exactly(sock, 1, 'Update end', RESPONSE_UPDATE_END_OK)
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send_check(sock, RESPONSE_OK, 'end acknowledgement')
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_LOGGER.info("OTA successful")
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# Do not connect logs until it is fully on
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time.sleep(1)
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def run_ota_impl_(remote_host, remote_port, password, filename):
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if is_ip_address(remote_host):
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_LOGGER.info("Connecting to %s", remote_host)
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ip = remote_host
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else:
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_LOGGER.info("Resolving IP address of %s", remote_host)
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try:
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ip = resolve_ip_address(remote_host)
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except EsphomeError as err:
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_LOGGER.error("Error resolving IP address of %s. Is it connected to WiFi?",
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remote_host)
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_LOGGER.error("(If this error persists, please set a static IP address: "
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"https://esphome.io/components/wifi.html#manual-ips)")
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raise OTAError(err)
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_LOGGER.info(" -> %s", ip)
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sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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sock.settimeout(10.0)
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try:
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sock.connect((ip, remote_port))
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except OSError as err:
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sock.close()
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_LOGGER.error("Connecting to %s:%s failed: %s", remote_host, remote_port, err)
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return 1
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file_handle = open(filename, 'rb')
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try:
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perform_ota(sock, password, file_handle, filename)
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except OTAError as err:
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_LOGGER.error(str(err))
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return 1
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finally:
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sock.close()
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file_handle.close()
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return 0
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def run_ota(remote_host, remote_port, password, filename):
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try:
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return run_ota_impl_(remote_host, remote_port, password, filename)
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except OTAError as err:
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_LOGGER.error(err)
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return 1
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