mirror of
https://github.com/NinjaCheetah/NUSGet.git
synced 2025-04-25 15:11:02 -04:00
144 lines
8.8 KiB
Python
144 lines
8.8 KiB
Python
# "modules/download_wii.py", licensed under the MIT license
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# Copyright 2024-2025 NinjaCheetah
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import pathlib
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import libWiiPy
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def run_nus_download_wii(out_folder: pathlib.Path, tid: str, version: str, pack_wad_chkbox: bool, keep_enc_chkbox: bool,
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decrypt_contents_chkbox: bool, wiiu_nus_chkbox: bool, use_local_chkbox: bool,
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repack_vwii_chkbox: bool, patch_ios: bool, wad_file_name: str, progress_callback=None):
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# Actual NUS download function that runs in a separate thread.
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# Immediately knock out any invalidly formatted Title IDs.
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if len(tid) != 16:
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return -1
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# An error here is acceptable, because it may just mean the box is empty. Or the version string is nonsense.
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# Either way, just fall back on downloading the latest version of the title.
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try:
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title_version = int(version)
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except ValueError:
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title_version = None
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# Set variables for these two options so that their state can be compared against the user's choices later.
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pack_wad_enabled = pack_wad_chkbox
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decrypt_contents_enabled = decrypt_contents_chkbox
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# Check whether we're going to be using the (faster) Wii U NUS or not.
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wiiu_nus_enabled = wiiu_nus_chkbox
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# Create a new libWiiPy Title.
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title = libWiiPy.title.Title()
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# Make a directory for this title if it doesn't exist.
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title_dir = out_folder.joinpath(tid)
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title_dir.mkdir(exist_ok=True)
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# Announce the title being downloaded, and the version if applicable.
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if title_version is not None:
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progress_callback.emit(f"Downloading title {tid} v{title_version}, please wait...")
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else:
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progress_callback.emit(f"Downloading title {tid} vLatest, please wait...")
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progress_callback.emit(" - Downloading and parsing TMD...")
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# Download a specific TMD version if a version was specified, otherwise just download the latest TMD.
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try:
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if title_version is not None:
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title.load_tmd(libWiiPy.title.download_tmd(tid, title_version, wiiu_endpoint=wiiu_nus_enabled))
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else:
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title.load_tmd(libWiiPy.title.download_tmd(tid, wiiu_endpoint=wiiu_nus_enabled))
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title_version = title.tmd.title_version
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# If libWiiPy returns an error, that means that either the TID or version doesn't exist, so return code -2.
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except ValueError:
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return -2
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# Make a directory for this version if it doesn't exist.
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version_dir = title_dir.joinpath(str(title_version))
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version_dir.mkdir(exist_ok=True)
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# Write out the TMD to a file.
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version_dir.joinpath(f"tmd.{title_version}").write_bytes(title.tmd.dump())
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# Use a local ticket, if one exists and "use local files" is enabled.
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if use_local_chkbox and version_dir.joinpath("tik").exists():
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progress_callback.emit(" - Parsing local copy of Ticket...")
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title.load_ticket(version_dir.joinpath("tik").read_bytes())
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else:
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progress_callback.emit(" - Downloading and parsing Ticket...")
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try:
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title.load_ticket(libWiiPy.title.download_ticket(tid, wiiu_endpoint=wiiu_nus_enabled))
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version_dir.joinpath("tik").write_bytes(title.ticket.dump())
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except ValueError:
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# If libWiiPy returns an error, then no ticket is available. Log this, and disable options requiring a
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# ticket so that they aren't attempted later.
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progress_callback.emit(" - No Ticket is available!")
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pack_wad_enabled = False
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decrypt_contents_enabled = False
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# Load the content records from the TMD, and begin iterating over the records.
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title.load_content_records()
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content_list = []
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for content in range(len(title.tmd.content_records)):
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# Generate the correct file name by converting the content ID into hex.
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content_file_name = f"{title.tmd.content_records[content].content_id:08X}"
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# Check for a local copy of the current content if "use local files" is enabled, and use it.
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if use_local_chkbox is True and version_dir.joinpath(content_file_name).exists():
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progress_callback.emit(f" - Using local copy of content {content + 1} of {len(title.tmd.content_records)}")
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content_list.append(version_dir.joinpath(content_file_name).read_bytes())
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else:
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progress_callback.emit(f" - Downloading content {content + 1} of {len(title.tmd.content_records)} "
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f"(Content ID: {title.tmd.content_records[content].content_id}, Size: "
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f"{title.tmd.content_records[content].content_size} bytes)...")
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content_list.append(libWiiPy.title.download_content(tid, title.tmd.content_records[content].content_id,
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wiiu_endpoint=wiiu_nus_enabled))
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progress_callback.emit(" - Done!")
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# If keep encrypted contents is on, write out each content after its downloaded.
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if keep_enc_chkbox is True:
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version_dir.joinpath(content_file_name).write_bytes(content_list[content])
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title.content.content_list = content_list
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# If decrypt local contents is still true, decrypt each content and write out the decrypted file.
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if decrypt_contents_enabled is True:
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try:
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for content in range(len(title.tmd.content_records)):
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progress_callback.emit(f" - Decrypting content {content + 1} of {len(title.tmd.content_records)} "
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f"(Content ID: {title.tmd.content_records[content].content_id})...")
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dec_content = title.get_content_by_index(content)
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content_file_name = f"{title.tmd.content_records[content].content_id:08X}.app"
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version_dir.joinpath(content_file_name).write_bytes(dec_content)
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except ValueError:
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# If libWiiPy throws an error during decryption, return code -3. This should only be possible if using
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# local encrypted contents that have been altered at present.
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return -3
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# If pack WAD is still true, pack the TMD, ticket, and contents all into a WAD.
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if pack_wad_enabled is True:
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# If the option to pack for vWii mode instead of Wii U mode is enabled, then the Title Key needs to be
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# re-encrypted with the common key instead of the vWii key, so that the title can be installed from within
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# vWii mode. (vWii mode does not have access to the vWii key, only Wii U mode has that.)
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if repack_vwii_chkbox is True and (tid[3] == "7" or tid[7] == "7"):
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progress_callback.emit(" - Re-encrypting Title Key with the common key...")
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title_key_common = libWiiPy.title.encrypt_title_key(title.ticket.get_title_key(), 0, title.tmd.title_id)
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title.ticket.common_key_index = 0
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title.ticket.title_key_enc = title_key_common
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# Get the WAD certificate chain, courtesy of libWiiPy.
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progress_callback.emit(" - Building certificate...")
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title.load_cert_chain(libWiiPy.title.download_cert_chain(wiiu_endpoint=wiiu_nus_enabled))
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# Use a typed WAD name if there is one, and auto generate one based on the TID and version if there isn't.
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progress_callback.emit(" - Packing WAD...")
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if wad_file_name != "" and wad_file_name is not None:
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# Batch downloads may insert -vLatest, so if it did we can fill in the real number now.
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wad_file_name = wad_file_name.replace("-vLatest", f"-v{title_version}")
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if wad_file_name[-4:].lower() != ".wad":
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wad_file_name += ".wad"
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else:
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wad_file_name = f"{tid}-v{title_version}.wad"
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# If enabled (after we make sure it's an IOS), apply all main IOS patches.
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if patch_ios and (tid[:8] == "00000001" and int(tid[-2:], 16) > 2):
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progress_callback.emit(" - Patching IOS...")
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ios_patcher = libWiiPy.title.IOSPatcher()
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ios_patcher.load(title)
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patch_count = ios_patcher.patch_all()
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if patch_count > 0:
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progress_callback.emit(f" - Applied {patch_count} patches!")
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else:
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progress_callback.emit(" - No patches could be applied! Is this a stub IOS?")
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title = ios_patcher.dump()
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# Have libWiiPy dump the WAD, and write that data out.
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version_dir.joinpath(wad_file_name).write_bytes(title.dump_wad())
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progress_callback.emit("Download complete!")
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# This is where the variables come in. If the state of these variables doesn't match the user's choice by this
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# point, it means that they enabled decryption or WAD packing for a title that doesn't have a ticket. Return
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# code 1 so that a warning popup is shown informing them of this.
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if (not pack_wad_enabled and pack_wad_chkbox) or (not decrypt_contents_enabled and decrypt_contents_chkbox):
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return 1
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return 0
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