tools/helpers/images.py

   1 # Copyright 2021 Erfan Abdi
   2 # SPDX-License-Identifier: GPL-3.0-or-later
   3 import logging
   4 import zipfile
   5 import json
   6 import hashlib
   7 import os
   8 import tools.config
   9 from tools import helpers
  10
  11
  12 def sha256sum(filename):
  13     h = hashlib.sha256()
  14     b = bytearray(128*1024)
  15     mv = memoryview(b)
  16     with open(filename, 'rb', buffering=0) as f:
  17         for n in iter(lambda: f.readinto(mv), 0):
  18             h.update(mv[:n])
  19     return h.hexdigest()
  20
  21
  22 def get(args):
  23     cfg = tools.config.load(args)
  24     system_ota = cfg["waydroid"]["system_ota"]
  25     system_request = helpers.http.retrieve(system_ota)
  26     if system_request[0] != 200:
  27         raise ValueError(
  28             "Failed to get system OTA channel: {}, error: {}".format(args.system_ota, system_request[0]))
  29     system_responses = json.loads(system_request[1].decode('utf8'))["response"]
  30     if len(system_responses) < 1:
  31         raise ValueError("No images found on system channel")
  32
  33     for system_response in system_responses:
  34         if system_response['datetime'] > int(cfg["waydroid"]["system_datetime"]):
  35             images_zip = helpers.http.download(
  36                 args, system_response['url'], system_response['filename'], cache=False)
  37             logging.info("Validating system image")
  38             if sha256sum(images_zip) != system_response['id']:
  39                 try:
  40                     os.remove(images_zip)
  41                 except:
  42                     pass
  43                 raise ValueError("Downloaded system image hash doesn't match, expected: {}".format(
  44                     system_response['id']))
  45             logging.info("Extracting to " + args.images_path)
  46             with zipfile.ZipFile(images_zip, 'r') as zip_ref:
  47                 zip_ref.extractall(args.images_path)
  48             cfg["waydroid"]["system_datetime"] = str(system_response['datetime'])
  49             tools.config.save(args, cfg)
  50             os.remove(images_zip)
  51             break
  52
  53     vendor_ota = cfg["waydroid"]["vendor_ota"]
  54     vendor_request = helpers.http.retrieve(vendor_ota)
  55     if vendor_request[0] != 200:
  56         raise ValueError(
  57             "Failed to get vendor OTA channel: {}, error: {}".format(vendor_ota, vendor_request[0]))
  58     vendor_responses = json.loads(vendor_request[1].decode('utf8'))["response"]
  59     if len(vendor_responses) < 1:
  60         raise ValueError("No images found on vendor channel")
  61
  62     for vendor_response in vendor_responses:
  63         if vendor_response['datetime'] > int(cfg["waydroid"]["vendor_datetime"]):
  64             images_zip = helpers.http.download(
  65                 args, vendor_response['url'], vendor_response['filename'], cache=False)
  66             logging.info("Validating vendor image")
  67             if sha256sum(images_zip) != vendor_response['id']:
  68                 try:
  69                     os.remove(images_zip)
  70                 except:
  71                     pass
  72                 raise ValueError("Downloaded vendor image hash doesn't match, expected: {}".format(
  73                     vendor_response['id']))
  74             logging.info("Extracting to " + args.images_path)
  75             with zipfile.ZipFile(images_zip, 'r') as zip_ref:
  76                 zip_ref.extractall(args.images_path)
  77             cfg["waydroid"]["vendor_datetime"] = str(vendor_response['datetime'])
  78             tools.config.save(args, cfg)
  79             os.remove(images_zip)
  80             break
  81
  82 def replace(args, system_zip, system_time, vendor_zip, vendor_time):
  83     cfg = tools.config.load(args)
  84     args.images_path = cfg["waydroid"]["images_path"]
  85     if os.path.exists(system_zip):
  86         with zipfile.ZipFile(system_zip, 'r') as zip_ref:
  87             zip_ref.extractall(args.images_path)
  88         cfg["waydroid"]["system_datetime"] = str(system_time)
  89         tools.config.save(args, cfg)
  90     if os.path.exists(vendor_zip):
  91         with zipfile.ZipFile(vendor_zip, 'r') as zip_ref:
  92             zip_ref.extractall(args.images_path)
  93         cfg["waydroid"]["vendor_datetime"] = str(vendor_time)
  94         tools.config.save(args, cfg)
  95
  96
  97 def mount_rootfs(args, images_dir):
  98     helpers.mount.mount(args, images_dir + "/system.img",
  99                         tools.config.defaults["rootfs"], umount=True)
 100     helpers.mount.mount(args, images_dir + "/vendor.img",
 101                            tools.config.defaults["rootfs"] + "/vendor")
 102     for egl_path in ["/vendor/lib/egl", "/vendor/lib64/egl"]:
 103         if os.path.isdir(egl_path):
 104             helpers.mount.bind(
 105                 args, egl_path, tools.config.defaults["rootfs"] + egl_path)
 106     if helpers.mount.ismount("/odm"):
 107         helpers.mount.bind(
 108             args, "/odm", tools.config.defaults["rootfs"] + "/odm_extra")
 109     else:
 110         if os.path.isdir("/vendor/odm"):
 111             helpers.mount.bind(
 112                 args, "/vendor/odm", tools.config.defaults["rootfs"] + "/odm_extra")
 113     helpers.mount.bind_file(args, args.work + "/waydroid.prop",
 114                             tools.config.defaults["rootfs"] + "/vendor/waydroid.prop")
 115
 116 def umount_rootfs(args):
 117     helpers.mount.umount_all(args, tools.config.defaults["rootfs"])