wifi_board.py

#!/usr/bin/env python3

from flipper.app import App
from serial.tools.list_ports_common import ListPortInfo

import logging
import os
import tempfile
import subprocess
import serial.tools.list_ports as list_ports
import json
import requests
import tarfile


class UpdateDownloader:
    UPDATE_SERVER = "https://update.flipperzero.one"
    UPDATE_PROJECT = "/blackmagic-firmware"
    UPDATE_INDEX = UPDATE_SERVER + UPDATE_PROJECT + "/directory.json"
    UPDATE_TYPE = "full_tgz"

    CHANNEL_ID_ALIAS = {
        "dev": "development",
        "rc": "release-candidate",
        "r": "release",
        "rel": "release",
    }

    def __init__(self):
        self.logger = logging.getLogger()

    def download(self, channel_id: str, dir: str) -> bool:
        # Aliases
        if channel_id in self.CHANNEL_ID_ALIAS:
            channel_id = self.CHANNEL_ID_ALIAS[channel_id]

        # Make directory
        if not os.path.exists(dir):
            self.logger.info(f"Creating directory {dir}")
            os.makedirs(dir)

        # Download json index
        self.logger.info(f"Downloading {self.UPDATE_INDEX}")
        response = requests.get(self.UPDATE_INDEX)
        if response.status_code != 200:
            self.logger.error(f"Failed to download {self.UPDATE_INDEX}")
            return False

        # Parse json index
        try:
            index = json.loads(response.content)
        except Exception as e:
            self.logger.error(f"Failed to parse json index: {e}")
            return False

        # Find channel
        channel = None
        for channel_candidate in index["channels"]:
            if channel_candidate["id"] == channel_id:
                channel = channel_candidate
                break

        # Check if channel found
        if channel is None:
            self.logger.error(
                f"Channel '{channel_id}' not found. Valid channels: {', '.join([c['id'] for c in index['channels']])}"
            )
            return False

        self.logger.info(f"Using channel '{channel_id}'")

        # Get latest version
        try:
            version = channel["versions"][0]
        except Exception as e:
            self.logger.error(f"Failed to get version: {e}")
            return False

        self.logger.info(f"Using version '{version['version']}'")

        # Get changelog
        changelog = None
        try:
            changelog = version["changelog"]
        except Exception as e:
            self.logger.error(f"Failed to get changelog: {e}")

        # print changelog
        if changelog is not None:
            self.logger.info(f"Changelog:")
            for line in changelog.split("\n"):
                if line.strip() == "":
                    continue
                self.logger.info(f"  {line}")

        # Find file
        file_url = None
        for file_candidate in version["files"]:
            if file_candidate["type"] == self.UPDATE_TYPE:
                file_url = file_candidate["url"]
                break

        if file_url is None:
            self.logger.error(f"File not found")
            return False

        # Make file path
        file_name = file_url.split("/")[-1]
        file_path = os.path.join(dir, file_name)

        # Download file
        self.logger.info(f"Downloading {file_url} to {file_path}")
        with open(file_path, "wb") as f:
            response = requests.get(file_url)
            f.write(response.content)

        # Unzip tgz
        self.logger.info(f"Unzipping {file_path}")
        with tarfile.open(file_path, "r") as tar:
            tar.extractall(dir)

        return True


class Main(App):
    def init(self):
        self.parser.add_argument("-p", "--port", help="CDC Port", default="auto")
        self.parser.add_argument(
            "-c", "--channel", help="Channel name", default="release"
        )
        self.parser.set_defaults(func=self.update)

        # logging
        self.logger = logging.getLogger()

    def find_wifi_board(self) -> bool:
        # idk why, but python thinks that list_ports.grep returns tuple[str, str, str]
        blackmagics: list[ListPortInfo] = list(list_ports.grep("blackmagic"))  # type: ignore
        daps: list[ListPortInfo] = list(list_ports.grep("CMSIS-DAP"))  # type: ignore

        return len(blackmagics) > 0 or len(daps) > 0

    def find_wifi_board_bootloader(self):
        # idk why, but python thinks that list_ports.grep returns tuple[str, str, str]
        ports: list[ListPortInfo] = list(list_ports.grep("ESP32-S2"))  # type: ignore

        if len(ports) == 0:
            # Blackmagic probe serial port not found, will be handled later
            pass
        elif len(ports) > 1:
            raise Exception("More than one WiFi board found")
        else:
            port = ports[0]
            if os.name == "nt":
                port.device = f"\\\\.\\{port.device}"
            return port.device

    def update(self):
        try:
            port = self.find_wifi_board_bootloader()
        except Exception as e:
            self.logger.error(f"{e}")
            return 1

        if self.args.port != "auto":
            port = self.args.port

            available_ports = [p[0] for p in list(list_ports.comports())]
            if port not in available_ports:
                self.logger.error(f"Port {port} not found")
                return 1

        if port is None:
            if self.find_wifi_board():
                self.logger.error("WiFi board found, but not in bootloader mode.")
                self.logger.info("Please hold down BOOT button and press RESET button")
            else:
                self.logger.error("WiFi board not found")
                self.logger.info(
                    "Please connect WiFi board to your computer, hold down BOOT button and press RESET button"
                )
            return 1

        # get temporary dir
        with tempfile.TemporaryDirectory() as temp_dir:
            downloader = UpdateDownloader()

            # download latest channel update
            try:
                if not downloader.download(self.args.channel, temp_dir):
                    self.logger.error(f"Cannot download update")
                    return 1
            except Exception as e:
                self.logger.error(f"Cannot download update: {e}")
                return 1

            with open(os.path.join(temp_dir, "flash.command"), "r") as f:
                flash_command = f.read()

            flash_command = flash_command.replace("\n", "").replace("\r", "")
            flash_command = flash_command.replace("(PORT)", port)

            # We can't reset the board after flashing via usb
            flash_command = flash_command.replace(
                "--after hard_reset", "--after no_reset_stub"
            )

            args = flash_command.split(" ")[0:]
            args = list(filter(None, args))

            esptool_params = []
            esptool_params.extend(args)

            self.logger.info(f'Running command: "{" ".join(args)}" in "{temp_dir}"')

            process = subprocess.Popen(
                esptool_params,
                stdout=subprocess.PIPE,
                stderr=subprocess.STDOUT,
                cwd=temp_dir,
                bufsize=1,
                universal_newlines=True,
            )

            while process.poll() is None:
                if process.stdout is not None:
                    for line in process.stdout:
                        self.logger.debug(f"{line.strip()}")

        if process.returncode != 0:
            self.logger.error(f"Failed to flash WiFi board")
        else:
            self.logger.info("WiFi board flashed successfully")
            self.logger.info("Press RESET button on WiFi board to start it")

        return process.returncode


if __name__ == "__main__":
    Main()()