#!/usr/bin/env python3 import math import os import shutil import tarfile import zlib from os.path import exists, join from flipper.app import App from flipper.assets.coprobin import CoproBinary, get_stack_type from flipper.assets.obdata import ObReferenceValues, OptionBytesData from flipper.utils.fff import FlipperFormatFile from slideshow import Main as SlideshowMain class Main(App): UPDATE_MANIFEST_VERSION = 2 UPDATE_MANIFEST_NAME = "update.fuf" # No compression, plain tar RESOURCE_TAR_MODE = "w:" RESOURCE_TAR_FORMAT = tarfile.USTAR_FORMAT RESOURCE_FILE_NAME = "resources.tar" RESOURCE_ENTRY_NAME_MAX_LENGTH = 100 WHITELISTED_STACK_TYPES = set( map( get_stack_type, ["BLE_FULL", "BLE_LIGHT", "BLE_BASIC"], ) ) FLASH_BASE = 0x8000000 MIN_LFS_PAGES = 6 # Post-update slideshow SPLASH_BIN_NAME = "splash.bin" def init(self): self.subparsers = self.parser.add_subparsers(help="sub-command help") # generate self.parser_generate = self.subparsers.add_parser( "generate", help="Generate update description file" ) self.parser_generate.add_argument("-d", dest="directory", required=True) self.parser_generate.add_argument("-v", dest="version", required=True) self.parser_generate.add_argument("-t", dest="target", required=True) self.parser_generate.add_argument( "--dfu", dest="dfu", default="", required=False ) self.parser_generate.add_argument("-r", dest="resources", required=False) self.parser_generate.add_argument("--stage", dest="stage", required=True) self.parser_generate.add_argument( "--radio", dest="radiobin", default="", required=False ) self.parser_generate.add_argument( "--radioaddr", dest="radioaddr", type=lambda x: int(x, 16), default=0, required=False, ) self.parser_generate.add_argument( "--radiotype", dest="radiotype", required=False ) self.parser_generate.add_argument("--obdata", dest="obdata", required=False) self.parser_generate.add_argument("--splash", dest="splash", required=False) self.parser_generate.add_argument( "--I-understand-what-I-am-doing", dest="disclaimer", required=False ) self.parser_generate.set_defaults(func=self.generate) def generate(self): stage_basename = "updater.bin" # used to be basename(self.args.stage) dfu_basename = ( "firmware.dfu" if self.args.dfu else "" ) # used to be basename(self.args.dfu) radiobin_basename = ( "radio.bin" if self.args.radiobin else "" ) # used to be basename(self.args.radiobin) resources_basename = "" radio_version = 0 radio_meta = None radio_addr = self.args.radioaddr if self.args.radiobin: if not self.args.radiotype: raise ValueError("Missing --radiotype") radio_meta = CoproBinary(self.args.radiobin) radio_version = self.copro_version_as_int(radio_meta, self.args.radiotype) if ( get_stack_type(self.args.radiotype) not in self.WHITELISTED_STACK_TYPES and self.args.disclaimer != "yes" ): self.logger.error( f"You are trying to bundle a non-standard stack type '{self.args.radiotype}'." ) self.disclaimer() return 1 if radio_addr == 0: radio_addr = radio_meta.get_flash_load_addr() self.logger.info( f"Using guessed radio address 0x{radio_addr:08X}, verify with Release_Notes" " or specify --radioaddr" ) if not exists(self.args.directory): os.makedirs(self.args.directory) shutil.copyfile(self.args.stage, join(self.args.directory, stage_basename)) dfu_size = 0 if self.args.dfu: dfu_size = os.stat(self.args.dfu).st_size shutil.copyfile(self.args.dfu, join(self.args.directory, dfu_basename)) if radiobin_basename: shutil.copyfile( self.args.radiobin, join(self.args.directory, radiobin_basename) ) if self.args.resources: resources_basename = self.RESOURCE_FILE_NAME if not self.package_resources( self.args.resources, join(self.args.directory, resources_basename) ): return 3 if not self.layout_check(dfu_size, radio_addr): self.logger.warn("Memory layout looks suspicious") if not self.args.disclaimer == "yes": self.disclaimer() return 2 if self.args.splash: splash_args = [ "-i", self.args.splash, "-o", join(self.args.directory, self.SPLASH_BIN_NAME), ] if splash_code := SlideshowMain(no_exit=True)(splash_args): self.logger.error( f"Failed to convert splash screen data: {splash_code}" ) return splash_code file = FlipperFormatFile() file.setHeader( "Flipper firmware upgrade configuration", self.UPDATE_MANIFEST_VERSION ) file.writeKey("Info", self.args.version) file.writeKey("Target", self.args.target[1:]) # dirty 'f' strip file.writeKey("Loader", stage_basename) file.writeComment("little-endian hex!") file.writeKey("Loader CRC", self.int2ffhex(self.crc(self.args.stage))) file.writeKey("Firmware", dfu_basename) file.writeKey("Radio", radiobin_basename or "") file.writeKey("Radio address", self.int2ffhex(radio_addr)) file.writeKey("Radio version", self.int2ffhex(radio_version, 12)) if radiobin_basename: file.writeKey("Radio CRC", self.int2ffhex(self.crc(self.args.radiobin))) else: file.writeKey("Radio CRC", self.int2ffhex(0)) file.writeKey("Resources", resources_basename) obvalues = ObReferenceValues((), (), ()) if self.args.obdata: obd = OptionBytesData(self.args.obdata) obvalues = obd.gen_values().export() file.writeComment( "NEVER EVER MESS WITH THESE VALUES, YOU WILL BRICK YOUR DEVICE" ) file.writeKey("OB reference", self.bytes2ffhex(obvalues.reference)) file.writeKey("OB mask", self.bytes2ffhex(obvalues.compare_mask)) file.writeKey("OB write mask", self.bytes2ffhex(obvalues.write_mask)) file.writeKey("Splashscreen", self.SPLASH_BIN_NAME if self.args.splash else "") file.save(join(self.args.directory, self.UPDATE_MANIFEST_NAME)) return 0 def layout_check(self, fw_size, radio_addr): if fw_size == 0 or radio_addr == 0: self.logger.info("Cannot validate layout for partial package") return True lfs_span = radio_addr - self.FLASH_BASE - fw_size self.logger.debug(f"Expected LFS size: {lfs_span}") lfs_span_pages = lfs_span / (4 * 1024) if lfs_span_pages < self.MIN_LFS_PAGES: self.logger.warn( f"Expected LFS size is too small (~{int(lfs_span_pages)} pages)" ) return False return True def disclaimer(self): self.logger.error( "You might brick your device into a state in which you'd need an SWD programmer to fix it." ) self.logger.error( "Please confirm that you REALLY want to do that with --I-understand-what-I-am-doing=yes" ) def _tar_filter(self, tarinfo: tarfile.TarInfo): if len(tarinfo.name) > self.RESOURCE_ENTRY_NAME_MAX_LENGTH: self.logger.error( f"Cannot package resource: name '{tarinfo.name}' too long" ) raise ValueError("Resource name too long") return tarinfo def package_resources(self, srcdir: str, dst_name: str): try: with tarfile.open( dst_name, self.RESOURCE_TAR_MODE, format=self.RESOURCE_TAR_FORMAT ) as tarball: tarball.add( srcdir, arcname="", filter=self._tar_filter, ) return True except ValueError as e: self.logger.error(f"Cannot package resources: {e}") return False @staticmethod def copro_version_as_int(coprometa, stacktype): major = coprometa.img_sig.version_major minor = coprometa.img_sig.version_minor sub = coprometa.img_sig.version_sub branch = coprometa.img_sig.version_branch release = coprometa.img_sig.version_build stype = get_stack_type(stacktype) return ( major | (minor << 8) | (sub << 16) | (branch << 24) | (release << 32) | (stype << 40) ) @staticmethod def bytes2ffhex(value: bytes): return " ".join(f"{b:02X}" for b in value) @staticmethod def int2ffhex(value: int, n_hex_syms=8): if value: n_hex_syms = max(math.ceil(math.ceil(math.log2(value)) / 8) * 2, n_hex_syms) fmtstr = f"%0{n_hex_syms}X" hexstr = fmtstr % value return " ".join(list(Main.batch(hexstr, 2))[::-1]) @staticmethod def crc(fileName): prev = 0 with open(fileName, "rb") as file: for eachLine in file: prev = zlib.crc32(eachLine, prev) return prev & 0xFFFFFFFF @staticmethod def batch(iterable, n=1): iterable_len = len(iterable) for ndx in range(0, iterable_len, n): yield iterable[ndx : min(ndx + n, iterable_len)] if __name__ == "__main__": Main()()