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Added option to patch downloaded IOSes

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Campbell
2024-08-17 23:36:45 -04:00
parent adc8be9cbb
commit cbbac55743
5 changed files with 399 additions and 298 deletions
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modules/download_wii.py Normal file
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# "modules/download_wii.py", licensed under the MIT license
# Copyright 2024 NinjaCheetah
import os
import pathlib
import libWiiPy
def run_nus_download_wii(out_folder: pathlib.Path, tid: str, version: str, pack_wad_chkbox: bool, keep_enc_chkbox: bool,
decrypt_contents_chkbox: bool, wiiu_nus_chkbox: bool, use_local_chkbox: bool,
repack_vwii_chkbox: bool, patch_ios: bool, wad_file_name: str, progress_callback=None):
# Actual NUS download function that runs in a separate thread.
# Immediately knock out any invalidly formatted Title IDs.
if len(tid) != 16:
return -1
# An error here is acceptable, because it may just mean the box is empty. Or the version string is nonsense.
# Either way, just fall back on downloading the latest version of the title.
try:
title_version = int(version)
except ValueError:
title_version = None
# Set variables for these two options so that their state can be compared against the user's choices later.
pack_wad_enabled = pack_wad_chkbox
decrypt_contents_enabled = decrypt_contents_chkbox
# Check whether we're going to be using the (faster) Wii U NUS or not.
wiiu_nus_enabled = wiiu_nus_chkbox
# Create a new libWiiPy Title.
title = libWiiPy.title.Title()
# Make a directory for this title if it doesn't exist.
title_dir = pathlib.Path(os.path.join(out_folder, tid))
if not title_dir.is_dir():
title_dir.mkdir()
# Announce the title being downloaded, and the version if applicable.
if title_version is not None:
progress_callback.emit("Downloading title " + tid + " v" + str(title_version) + ", please wait...")
else:
progress_callback.emit("Downloading title " + tid + " vLatest, please wait...")
progress_callback.emit(" - Downloading and parsing TMD...")
# Download a specific TMD version if a version was specified, otherwise just download the latest TMD.
try:
if title_version is not None:
title.load_tmd(libWiiPy.title.download_tmd(tid, title_version, wiiu_endpoint=wiiu_nus_enabled))
else:
title.load_tmd(libWiiPy.title.download_tmd(tid, wiiu_endpoint=wiiu_nus_enabled))
title_version = title.tmd.title_version
# If libWiiPy returns an error, that means that either the TID or version doesn't exist, so return code -2.
except ValueError:
return -2
# Make a directory for this version if it doesn't exist.
version_dir = pathlib.Path(os.path.join(title_dir, str(title_version)))
if not version_dir.is_dir():
version_dir.mkdir()
# Write out the TMD to a file.
tmd_out = open(os.path.join(version_dir, "tmd." + str(title_version)), "wb")
tmd_out.write(title.tmd.dump())
tmd_out.close()
# Use a local ticket, if one exists and "use local files" is enabled.
if use_local_chkbox is True and os.path.exists(os.path.join(version_dir, "tik")):
progress_callback.emit(" - Parsing local copy of Ticket...")
local_ticket = open(os.path.join(version_dir, "tik"), "rb")
title.load_ticket(local_ticket.read())
else:
progress_callback.emit(" - Downloading and parsing Ticket...")
try:
title.load_ticket(libWiiPy.title.download_ticket(tid, wiiu_endpoint=wiiu_nus_enabled))
ticket_out = open(os.path.join(version_dir, "tik"), "wb")
ticket_out.write(title.ticket.dump())
ticket_out.close()
except ValueError:
# If libWiiPy returns an error, then no ticket is available. Log this, and disable options requiring a
# ticket so that they aren't attempted later.
progress_callback.emit(" - No Ticket is available!")
pack_wad_enabled = False
decrypt_contents_enabled = False
# Load the content records from the TMD, and begin iterating over the records.
title.load_content_records()
content_list = []
for content in range(len(title.tmd.content_records)):
# Generate the correct file name by converting the content ID into hex, minus the 0x, and then appending
# that to the end of 000000. I refuse to believe there isn't a better way to do this here and in libWiiPy.
content_file_name = hex(title.tmd.content_records[content].content_id)[2:]
while len(content_file_name) < 8:
content_file_name = "0" + content_file_name
# Check for a local copy of the current content if "use local files" is enabled, and use it.
if use_local_chkbox is True and os.path.exists(os.path.join(version_dir,
content_file_name)):
progress_callback.emit(" - Using local copy of content " + str(content + 1) + " of " +
str(len(title.tmd.content_records)))
local_file = open(os.path.join(version_dir, content_file_name), "rb")
content_list.append(local_file.read())
else:
progress_callback.emit(" - Downloading content " + str(content + 1) + " of " +
str(len(title.tmd.content_records)) + " (Content ID: " +
str(title.tmd.content_records[content].content_id) + ", Size: " +
str(title.tmd.content_records[content].content_size) + " bytes)...")
content_list.append(libWiiPy.title.download_content(tid, title.tmd.content_records[content].content_id,
wiiu_endpoint=wiiu_nus_enabled))
progress_callback.emit(" - Done!")
# If keep encrypted contents is on, write out each content after its downloaded.
if keep_enc_chkbox is True:
enc_content_out = open(os.path.join(version_dir, content_file_name), "wb")
enc_content_out.write(content_list[content])
enc_content_out.close()
title.content.content_list = content_list
# If decrypt local contents is still true, decrypt each content and write out the decrypted file.
if decrypt_contents_enabled is True:
try:
for content in range(len(title.tmd.content_records)):
progress_callback.emit(" - Decrypting content " + str(content + 1) + " of " +
str(len(title.tmd.content_records)) + " (Content ID: " +
str(title.tmd.content_records[content].content_id) + ")...")
dec_content = title.get_content_by_index(content)
content_file_name = hex(title.tmd.content_records[content].content_id)[2:]
while len(content_file_name) < 8:
content_file_name = "0" + content_file_name
content_file_name = content_file_name + ".app"
dec_content_out = open(os.path.join(version_dir, content_file_name), "wb")
dec_content_out.write(dec_content)
dec_content_out.close()
except ValueError:
# If libWiiPy throws an error during decryption, return code -3. This should only be possible if using
# local encrypted contents that have been altered at present.
return -3
# If pack WAD is still true, pack the TMD, ticket, and contents all into a WAD.
if pack_wad_enabled is True:
# If the option to pack for vWii mode instead of Wii U mode is enabled, then the Title Key needs to be
# re-encrypted with the common key instead of the vWii key, so that the title can be installed from within
# vWii mode. (vWii mode does not have access to the vWii key, only Wii U mode has that.)
if repack_vwii_chkbox is True and (tid[3] == "7" or tid[7] == "7"):
progress_callback.emit(" - Re-encrypting Title Key with the common key...")
title_key_dec = title.ticket.get_title_key()
title_key_common = libWiiPy.title.encrypt_title_key(title_key_dec, 0, title.tmd.title_id)
title.ticket.common_key_index = 0
title.ticket.title_key_enc = title_key_common
# Get the WAD certificate chain, courtesy of libWiiPy.
progress_callback.emit(" - Building certificate...")
title.wad.set_cert_data(libWiiPy.title.download_cert(wiiu_endpoint=wiiu_nus_enabled))
# Use a typed WAD name if there is one, and auto generate one based on the TID and version if there isn't.
progress_callback.emit(" - Packing WAD...")
if wad_file_name != "":
if wad_file_name[-4:] != ".wad":
wad_file_name = wad_file_name + ".wad"
else:
wad_file_name = tid + "-v" + str(title_version) + ".wad"
# If enabled (after we make sure it's an IOS), apply all main IOS patches.
if patch_ios and (tid[:8] == "00000001" and int(tid[-2:], 16) > 2):
progress_callback.emit(" - Patching IOS...")
ios_patcher = libWiiPy.title.IOSPatcher()
ios_patcher.load(title)
patch_count = ios_patcher.patch_all()
if patch_count > 0:
progress_callback.emit(f" - Applied {patch_count} patches!")
else:
progress_callback.emit(" - No patches could be applied! Is this a stub IOS?")
title = ios_patcher.dump()
# Have libWiiPy dump the WAD, and write that data out.
file = open(os.path.join(version_dir, wad_file_name), "wb")
file.write(title.dump_wad())
file.close()
progress_callback.emit("Download complete!")
# This is where the variables come in. If the state of these variables doesn't match the user's choice by this
# point, it means that they enabled decryption or WAD packing for a title that doesn't have a ticket. Return
# code 1 so that a warning popup is shown informing them of this.
if (not pack_wad_enabled and pack_wad_chkbox) or (not decrypt_contents_enabled and decrypt_contents_chkbox):
return 1
return 0