encounter
/
nod-rs
mirror of https://github.com/encounter/nod-rs.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Finish WIA/RVZ, add WBFS, CISO & more 

Generally a complete overhaul.
This commit is contained in:
Luke Street 2024-02-16 22:53:37 -07:00
parent fff7b350b1
commit ce9fbbf822
23 changed files with 3388 additions and 2626 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

33
Cargo.toml
View File

@ -11,8 +11,9 @@ readme = "README.md"
description = """
Rust library and CLI tool for reading GameCube and Wii disc images.
"""
keywords = ["gamecube", "wii", "iso", "nfs", "gcm"]
keywords = ["gamecube", "wii", "iso", "nfs", "rvz"]
categories = ["command-line-utilities", "parser-implementations"]
build = "build.rs"
[[bin]]
name = "nodtool"
@ -24,27 +25,37 @@ lto = "thin"
strip = "debuginfo"
[features]
default = ["compress-bzip2", "compress-zstd"] #, "compress-lzma"
default = ["compress-bzip2", "compress-lzma", "compress-zstd"]
asm = ["md-5/asm", "sha1/asm"]
compress-bzip2 = ["bzip2"]
compress-lzma = ["liblzma"]
compress-zstd = ["zstd"]
#compress-lzma = ["xz2"]
nightly = ["crc32fast/nightly"]
[dependencies]
aes = "0.8.3"
argh = "0.1.12"
aes = "0.8.4"
argh_derive = "0.1.12"
argp = "0.3.0"
base16ct = "0.2.0"
binrw = "0.13.3"
bytemuck = "1.14.1"
bzip2 = { version = "0.4.4", optional = true }
bzip2 = { version = "0.4.4", features = ["static"], optional = true }
cbc = "0.1.2"
crc32fast = "1.3.2"
crc32fast = "1.4.0"
digest = "0.10.7"
enable-ansi-support = "0.2.1"
encoding_rs = "0.8.33"
file-size = "1.0.3"
indicatif = "0.17.8"
itertools = "0.12.1"
liblzma = { git = "https://github.com/encounter/liblzma-rs.git", rev = "ce29b22", features = ["static"], optional = true }
log = "0.4.20"
md-5 = "0.10.6"
rayon = "1.8.1"
sha1 = "0.10.6"
thiserror = "1.0.56"
xz2 = { version = "0.1.7", optional = true }
supports-color = "3.0.0"
thiserror = "1.0.57"
tracing = "0.1.40"
tracing-attributes = "0.1.27"
tracing-subscriber = { version = "0.3.18", features = ["env-filter"] }
xxhash-rust = { version = "0.8.8", features = ["xxh64"] }
zerocopy = { version = "0.7.32", features = ["alloc", "derive"] }
zstd = { version = "0.13.0", optional = true }

54
README.md
View File

@ -10,52 +10,68 @@
Library for traversing & reading GameCube and Wii disc images.
Based on the C++ library [nod](https://github.com/AxioDL/nod),
Originally based on the C++ library [nod](https://github.com/AxioDL/nod),
but does not currently support authoring.
Currently supported file formats:
- ISO (GCM)
- WIA / RVZ
- WBFS
- NFS (Wii U VC files, e.g. `hif_000000.nfs`)
- CISO
- NFS (Wii U VC)
### CLI tool
## CLI tool
This crate includes a CLI tool `nodtool`, which can be used to extract disc images to a specified directory:
This crate includes a command-line tool called `nodtool`.
### info
Displays information about a disc image.
```shell
nodtool info /path/to/game.iso
```
### extract
Extracts the contents of a disc image to a directory.
```shell
nodtool extract /path/to/game.iso [outdir]
```
For Wii U VC titles, use `content/hif_*.nfs`:
For Wii U VC titles, use `content/hif_000000.nfs`:
```shell
nodtool extract /path/to/game/content/hif_000000.nfs [outdir]
```
### Library example
### convert
Converts any supported format to raw ISO.
```shell
nodtool convert /path/to/game.wia /path/to/game.iso
```
## Library example
Opening a disc image and reading a file:
```rust
use std::io::Read;
use nod::{
disc::{new_disc_base, PartHeader},
fst::NodeType,
io::{new_disc_io, DiscIOOptions},
};
use nod::{Disc, PartitionKind};
fn main() -> nod::Result<()> {
let options = DiscIOOptions::default();
let mut disc_io = new_disc_io("path/to/file.iso".as_ref(), &options)?;
let disc_base = new_disc_base(disc_io.as_mut())?;
let mut partition = disc_base.get_data_partition(disc_io.as_mut(), false)?;
let header = partition.read_header()?;
if let Some(NodeType::File(node)) = header.find_node("/MP3/Worlds.txt") {
let disc = Disc::new("path/to/file.iso")?;
let mut partition = disc.open_partition_kind(PartitionKind::Data)?;
let meta = partition.meta()?;
let fst = meta.fst()?;
if let Some((_, node)) = fst.find("/MP3/Worlds.txt") {
let mut s = String::new();
partition
.begin_file_stream(node)
.open_file(node)
.expect("Failed to open file stream")
.read_to_string(&mut s)
.expect("Failed to read file");
@ -65,7 +81,7 @@ fn main() -> nod::Result<()> {
}
```
### License
## License
Licensed under either of

9
build.rs Normal file
View File

@ -0,0 +1,9 @@
fn main() {
let output = std::process::Command::new("git")
.args(["rev-parse", "HEAD"])
.output()
.expect("Failed to execute git");
let rev = String::from_utf8(output.stdout).expect("Failed to parse git output");
println!("cargo:rustc-env=GIT_COMMIT_SHA={rev}");
println!("cargo:rustc-rerun-if-changed=.git/HEAD");
}

64
src/argp_version.rs Normal file
View File

@ -0,0 +1,64 @@
// Originally from https://gist.github.com/suluke/e0c672492126be0a4f3b4f0e1115d77c
//! Extend `argp` to be better integrated with the `cargo` ecosystem
//!
//! For now, this only adds a --version/-V option which causes early-exit.
use std::ffi::OsStr;
use argp::{parser::ParseGlobalOptions, EarlyExit, FromArgs, TopLevelCommand};
struct ArgsOrVersion<T>(T)
where T: FromArgs;
impl<T> TopLevelCommand for ArgsOrVersion<T> where T: FromArgs {}
impl<T> FromArgs for ArgsOrVersion<T>
where T: FromArgs
{
fn _from_args(
command_name: &[&str],
args: &[&OsStr],
parent: Option<&mut dyn ParseGlobalOptions>,
) -> Result<Self, EarlyExit> {
/// Also use argp for catching `--version`-only invocations
#[derive(FromArgs)]
struct Version {
/// Print version information and exit.
#[argp(switch, short = 'V')]
pub version: bool,
}
match Version::from_args(command_name, args) {
Ok(v) => {
if v.version {
println!(
"{} {} {}",
command_name.first().unwrap_or(&""),
env!("CARGO_PKG_VERSION"),
env!("GIT_COMMIT_SHA"),
);
std::process::exit(0);
} else {
// Pass through empty arguments
T::_from_args(command_name, args, parent).map(Self)
}
}
Err(exit) => match exit {
EarlyExit::Help(_help) => {
// TODO: Chain help info from Version
// For now, we just put the switch on T as well
T::from_args(command_name, &["--help"]).map(Self)
}
EarlyExit::Err(_) => T::_from_args(command_name, args, parent).map(Self),
},
}
}
}
/// Create a `FromArgs` type from the current process’s `env::args`.
///
/// This function will exit early from the current process if argument parsing was unsuccessful or if information like `--help` was requested.
/// Error messages will be printed to stderr, and `--help` output to stdout.
pub fn from_env<T>() -> T
where T: TopLevelCommand {
argp::parse_args_or_exit::<ArgsOrVersion<T>>(argp::DEFAULT).0
}

606
src/bin.rs
View File

@ -1,82 +1,215 @@
mod argp_version;
use std::{
borrow::Cow,
env,
error::Error,
ffi::OsStr,
fs,
fs::File,
io,
io::{BufWriter, Write},
io::{BufWriter, Read, Write},
path::{Path, PathBuf},
str::FromStr,
sync::{
mpsc::{sync_channel, SyncSender},
Arc,
},
thread,
thread::JoinHandle,
};
use argh_derive::FromArgs;
use argp::{FromArgValue, FromArgs};
use digest::{Digest, Output};
use enable_ansi_support::enable_ansi_support;
use indicatif::{ProgressBar, ProgressState, ProgressStyle};
use itertools::Itertools;
use nod::{
disc::{new_disc_base, PartHeader, PartReadStream, PartitionType},
fst::NodeType,
io::{has_extension, new_disc_io, DiscIOOptions},
Result, ResultContext,
Disc, DiscHeader, Fst, Node, OpenOptions, PartitionBase, PartitionKind, PartitionMeta, Result,
ResultContext,
};
use sha1::Digest;
use supports_color::Stream;
use tracing::level_filters::LevelFilter;
use tracing_subscriber::EnvFilter;
use zerocopy::FromZeroes;
#[derive(FromArgs, Debug)]
/// Tool for reading GameCube and Wii disc images.
struct TopLevel {
#[argh(subcommand)]
#[argp(subcommand)]
command: SubCommand,
#[argp(option, short = 'C')]
/// Change working directory.
chdir: Option<PathBuf>,
#[argp(option, short = 'L')]
/// Minimum logging level. (Default: info)
/// Possible values: error, warn, info, debug, trace
log_level: Option<LogLevel>,
#[allow(unused)]
#[argp(switch, short = 'V')]
/// Print version information and exit.
version: bool,
#[argp(switch)]
/// Disable color output. (env: NO_COLOR)
no_color: bool,
}
#[derive(FromArgs, Debug)]
#[argh(subcommand)]
#[argp(subcommand)]
enum SubCommand {
Info(InfoArgs),
Extract(ExtractArgs),
Convert(ConvertArgs),
Verify(VerifyArgs),
}
#[derive(FromArgs, Debug)]
/// Extract a disc image.
#[argh(subcommand, name = "extract")]
struct ExtractArgs {
#[argh(positional)]
/// path to disc image (ISO or NFS)
/// Displays information about a disc image.
#[argp(subcommand, name = "info")]
struct InfoArgs {
#[argp(positional)]
/// path to disc image
file: PathBuf,
#[argh(positional)]
}
#[derive(FromArgs, Debug)]
/// Extract a disc image.
#[argp(subcommand, name = "extract")]
struct ExtractArgs {
#[argp(positional)]
/// path to disc image
file: PathBuf,
#[argp(positional)]
/// output directory (optional)
out: Option<PathBuf>,
#[argh(switch, short = 'q')]
#[argp(switch, short = 'q')]
/// quiet output
quiet: bool,
#[argh(switch, short = 'h')]
#[argp(switch, short = 'h')]
/// validate disc hashes (Wii only)
validate: bool,
}
#[derive(FromArgs, Debug)]
/// Extract a disc image.
#[argh(subcommand, name = "convert")]
/// Converts a disc image to ISO.
#[argp(subcommand, name = "convert")]
struct ConvertArgs {
#[argh(positional)]
#[argp(positional)]
/// path to disc image
file: PathBuf,
#[argh(positional)]
#[argp(positional)]
/// output ISO file
out: PathBuf,
}
#[derive(FromArgs, Debug)]
/// Verifies a disc image.
#[argh(subcommand, name = "verify")]
#[argp(subcommand, name = "verify")]
struct VerifyArgs {
#[argh(positional)]
#[argp(positional)]
/// path to disc image
file: PathBuf,
}
#[derive(Debug, Eq, PartialEq, Copy, Clone)]
enum LogLevel {
Error,
Warn,
Info,
Debug,
Trace,
}
impl FromStr for LogLevel {
type Err = ();
fn from_str(s: &str) -> std::result::Result<Self, Self::Err> {
Ok(match s {
"error" => Self::Error,
"warn" => Self::Warn,
"info" => Self::Info,
"debug" => Self::Debug,
"trace" => Self::Trace,
_ => return Err(()),
})
}
}
impl ToString for LogLevel {
fn to_string(&self) -> String {
match self {
LogLevel::Error => "error",
LogLevel::Warn => "warn",
LogLevel::Info => "info",
LogLevel::Debug => "debug",
LogLevel::Trace => "trace",
}
.to_string()
}
}
impl FromArgValue for LogLevel {
fn from_arg_value(value: &OsStr) -> std::result::Result<Self, String> {
String::from_arg_value(value)
.and_then(|s| Self::from_str(&s).map_err(|_| "Invalid log level".to_string()))
}
}
// Duplicated from supports-color so we can check early.
fn env_no_color() -> bool {
match env::var("NO_COLOR").as_deref() {
Ok("") | Ok("0") | Err(_) => false,
Ok(_) => true,
}
}
fn main() {
let args: TopLevel = argh::from_env();
let result = match args.command {
let args: TopLevel = argp_version::from_env();
let use_colors = if args.no_color || env_no_color() {
false
} else {
// Try to enable ANSI support on Windows.
let _ = enable_ansi_support();
// Disable isatty check for supports-color. (e.g. when used with ninja)
env::set_var("IGNORE_IS_TERMINAL", "1");
supports_color::on(Stream::Stdout).is_some_and(|c| c.has_basic)
};
let format =
tracing_subscriber::fmt::format().with_ansi(use_colors).with_target(false).without_time();
let builder = tracing_subscriber::fmt().event_format(format);
if let Some(level) = args.log_level {
builder
.with_max_level(match level {
LogLevel::Error => LevelFilter::ERROR,
LogLevel::Warn => LevelFilter::WARN,
LogLevel::Info => LevelFilter::INFO,
LogLevel::Debug => LevelFilter::DEBUG,
LogLevel::Trace => LevelFilter::TRACE,
})
.init();
} else {
builder
.with_env_filter(
EnvFilter::builder()
.with_default_directive(LevelFilter::INFO.into())
.from_env_lossy(),
)
.init();
}
let mut result = Ok(());
if let Some(dir) = &args.chdir {
result = env::set_current_dir(dir).map_err(|e| {
nod::Error::Io(format!("Failed to change working directory to '{}'", dir.display()), e)
});
}
result = result.and_then(|_| match args.command {
SubCommand::Info(c_args) => info(c_args),
SubCommand::Convert(c_args) => convert(c_args),
SubCommand::Extract(c_args) => extract(c_args),
SubCommand::Verify(c_args) => verify(c_args),
};
});
if let Err(e) = result {
eprintln!("Failed: {}", e);
if let Some(source) = e.source() {
@ -86,32 +219,108 @@ fn main() {
}
}
fn print_header(header: &DiscHeader) {
println!("Name: {}", header.game_title_str());
println!("Game ID: {}", header.game_id_str());
println!("Disc {}, Revision {}", header.disc_num + 1, header.disc_version);
if header.no_partition_hashes != 0 {
println!("[!] Disc has no hashes");
}
if header.no_partition_encryption != 0 {
println!("[!] Disc is not encrypted");
}
}
fn info(args: InfoArgs) -> Result<()> {
let disc = Disc::new_with_options(args.file, &OpenOptions {
rebuild_hashes: false,
validate_hashes: false,
rebuild_encryption: false,
})?;
let header = disc.header();
print_header(header);
if header.is_wii() {
for (idx, info) in disc.partitions().iter().enumerate() {
println!();
println!("Partition {}:{}", info.group_index, info.part_index);
println!("\tType: {}", info.kind);
println!("\tPartition offset: {:#X}", info.part_offset);
println!(
"\tData offset / size: {:#X} / {:#X} ({})",
info.part_offset + info.data_offset,
info.data_size,
file_size::fit_4(info.data_size)
);
if let Some(header) = &info.header {
println!(
"\tTMD offset / size: {:#X} / {:#X}",
info.part_offset + header.tmd_off(),
header.tmd_size()
);
println!(
"\tCert offset / size: {:#X} / {:#X}",
info.part_offset + header.cert_chain_off(),
header.cert_chain_size()
);
println!(
"\tH3 offset / size: {:#X} / {:#X}",
info.part_offset + header.h3_table_off(),
header.h3_table_size()
);
}
let mut partition = disc.open_partition(idx)?;
let meta = partition.meta()?;
let header = meta.header();
let tmd = meta.tmd_header();
let title_id_str = if let Some(tmd) = tmd {
format!(
"{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}",
tmd.title_id[0],
tmd.title_id[1],
tmd.title_id[2],
tmd.title_id[3],
tmd.title_id[4],
tmd.title_id[5],
tmd.title_id[6],
tmd.title_id[7]
)
} else {
"N/A".to_string()
};
println!("\tName: {}", header.game_title_str());
println!("\tGame ID: {} ({})", header.game_id_str(), title_id_str);
println!("\tDisc {}, Revision {}", header.disc_num + 1, header.disc_version);
}
} else if header.is_gamecube() {
// TODO
} else {
println!(
"Invalid GC/Wii magic: {:#010X}/{:#010X}",
header.gcn_magic.get(),
header.wii_magic.get()
);
}
Ok(())
}
fn convert(args: ConvertArgs) -> Result<()> { convert_and_verify(&args.file, Some(&args.out)) }
fn verify(args: VerifyArgs) -> Result<()> { convert_and_verify(&args.file, None) }
fn convert_and_verify(in_file: &Path, out_file: Option<&Path>) -> Result<()> {
println!("Loading {}", in_file.display());
let mut disc_io = new_disc_io(in_file, &DiscIOOptions { rebuild_hashes: true })?;
let disc_base = new_disc_base(disc_io.as_mut())?;
let header = disc_base.get_header();
println!(
"\nGame ID: {}{}{}{}{}{}",
header.game_id[0] as char,
header.game_id[1] as char,
header.game_id[2] as char,
header.game_id[3] as char,
header.game_id[4] as char,
header.game_id[5] as char
);
println!("Game title: {}", header.game_title);
println!("Disc num: {}", header.disc_num);
println!("Disc version: {}", header.disc_version);
let disc = Disc::new_with_options(in_file, &OpenOptions {
rebuild_hashes: true,
validate_hashes: false,
rebuild_encryption: true,
})?;
let header = disc.header();
print_header(header);
let mut stream = disc_io.begin_read_stream(0).context("Creating disc read stream")?;
let mut crc = crc32fast::Hasher::new();
let mut md5 = md5::Md5::new();
let mut sha1 = sha1::Sha1::new();
let meta = disc.meta()?;
let mut stream = disc.open()?.take(disc.disc_size());
let mut file = if let Some(out_file) = out_file {
Some(
@ -122,39 +331,130 @@ fn convert_and_verify(in_file: &Path, out_file: Option<&Path>) -> Result<()> {
None
};
println!("\nHashing...");
let pb = ProgressBar::new(stream.limit());
pb.set_style(ProgressStyle::with_template("{spinner:.green} [{elapsed_precise}] [{wide_bar:.cyan/blue}] {bytes}/{total_bytes} ({bytes_per_sec}, {eta})")
.unwrap()
.with_key("eta", |state: &ProgressState, w: &mut dyn std::fmt::Write| {
write!(w, "{:.1}s", state.eta().as_secs_f64()).unwrap()
})
.progress_chars("#>-"));
const BUFFER_SIZE: usize = 1015808; // LCM(0x8000, 0x7C00)
let mut buf = vec![0u8; BUFFER_SIZE];
let digest_threads = [
digest_thread::<crc32fast::Hasher>(),
digest_thread::<md5::Md5>(),
digest_thread::<sha1::Sha1>(),
digest_thread::<xxhash_rust::xxh64::Xxh64>(),
];
let (w_tx, w_rx) = sync_channel::<Arc<[u8]>>(1);
let w_thread = thread::spawn(move || {
let mut total_written = 0u64;
while let Ok(data) = w_rx.recv() {
if let Some(file) = &mut file {
file.write_all(data.as_ref())
.with_context(|| {
format!("Writing {} bytes at offset {}", data.len(), total_written)
})
.unwrap();
}
total_written += data.len() as u64;
pb.set_position(total_written);
}
if let Some(mut file) = file {
file.flush().context("Flushing output file").unwrap();
}
pb.finish();
});
let mut total_read = 0u64;
let mut buf = <u8>::new_box_slice_zeroed(BUFFER_SIZE);
loop {
let read = stream.read(&mut buf).with_context(|| {
let read = stream.read(buf.as_mut()).with_context(|| {
format!("Reading {} bytes at disc offset {}", BUFFER_SIZE, total_read)
})?;
if read == 0 {
break;
}
let slice = &buf[..read];
crc.update(slice);
md5.update(slice);
sha1.update(slice);
if let Some(file) = &mut file {
file.write_all(slice).with_context(|| {
format!("Writing {} bytes at offset {}", slice.len(), total_read)
})?;
let arc = Arc::<[u8]>::from(&buf[..read]);
for (tx, _) in &digest_threads {
tx.send(arc.clone()).map_err(|_| "Sending data to hash thread")?;
}
w_tx.send(arc).map_err(|_| "Sending data to write thread")?;
total_read += read as u64;
}
drop(w_tx); // Close channel
w_thread.join().unwrap();
println!();
if let Some(path) = out_file {
println!("Wrote {} to {}", file_size::fit_4(total_read), path.display());
}
println!();
println!("CRC32: {:08x}", crc.finalize());
println!("MD5: {:032x}", md5.finalize());
println!("SHA-1: {:040x}", sha1.finalize());
if let (Some(path), Some(file)) = (out_file, &mut file) {
file.flush().context("Flushing output file")?;
println!("Wrote {} to {}", file_size::fit_4(total_read), path.display());
for (tx, handle) in digest_threads.into_iter() {
drop(tx); // Close channel
match handle.join().unwrap() {
DigestResult::Crc32(crc) => {
print!("CRC32: {:08x}", crc);
if let Some(expected_crc) = meta.crc32 {
if expected_crc != crc {
print!(" ❌ (expected: {:08x})", expected_crc);
} else {
print!(" ✅");
}
}
println!();
}
DigestResult::Md5(md5) => {
print!("MD5: {:032x}", md5);
if let Some(expected_md5) = meta.md5 {
let expected_md5 = <Output<md5::Md5>>::from(expected_md5);
if expected_md5 != md5 {
print!(" ❌ (expected: {:032x})", expected_md5);
} else {
print!(" ✅");
}
}
println!();
}
DigestResult::Sha1(sha1) => {
print!("SHA-1: {:040x}", sha1);
if let Some(expected_sha1) = meta.sha1 {
let expected_sha1 = <Output<sha1::Sha1>>::from(expected_sha1);
if expected_sha1 != sha1 {
print!(" ❌ (expected: {:040x})", expected_sha1);
} else {
print!(" ✅");
}
}
println!();
}
DigestResult::Xxh64(xxh64) => {
print!("XXH64: {:016x}", xxh64);
if let Some(expected_xxh64) = meta.xxhash64 {
if expected_xxh64 != xxh64 {
print!(" ❌ (expected: {:016x})", expected_xxh64);
} else {
print!(" ✅");
}
}
println!();
}
}
}
Ok(())
}
pub fn has_extension(filename: &Path, extension: &str) -> bool {
match filename.extension() {
Some(ext) => ext.eq_ignore_ascii_case(extension),
None => false,
}
}
fn extract(args: ExtractArgs) -> Result<()> {
let output_dir: PathBuf;
if let Some(dir) = args.out {
@ -169,24 +469,54 @@ fn extract(args: ExtractArgs) -> Result<()> {
} else {
output_dir = args.file.with_extension("");
}
let mut disc_io = new_disc_io(&args.file, &DiscIOOptions { rebuild_hashes: args.validate })?;
let disc_base = new_disc_base(disc_io.as_mut())?;
let mut partition =
disc_base.get_partition(disc_io.as_mut(), PartitionType::Data, args.validate)?;
let header = partition.read_header()?;
extract_sys_files(header.as_ref(), &output_dir.join("sys"), args.quiet)?;
extract_node(header.root_node(), partition.as_mut(), &output_dir.join("files"), args.quiet)?;
let disc = Disc::new_with_options(&args.file, &OpenOptions {
rebuild_hashes: args.validate,
validate_hashes: args.validate,
rebuild_encryption: false,
})?;
let is_wii = disc.header().is_wii();
let mut partition = disc.open_partition_kind(PartitionKind::Data)?;
let meta = partition.meta()?;
extract_sys_files(meta.as_ref(), &output_dir.join("sys"), args.quiet)?;
// Extract FST
let files_dir = output_dir.join("files");
let fst = Fst::new(&meta.raw_fst)?;
let mut path_segments = Vec::<(Cow<str>, usize)>::new();
for (idx, node, name) in fst.iter() {
// Remove ended path segments
let mut new_size = 0;
for (_, end) in path_segments.iter() {
if *end == idx {
break;
}
new_size += 1;
}
path_segments.truncate(new_size);
// Add the new path segment
let end = if node.is_dir() { node.length(false) as usize } else { idx + 1 };
path_segments.push((name?, end));
let path = path_segments.iter().map(|(name, _)| name.as_ref()).join("/");
if node.is_dir() {
fs::create_dir_all(files_dir.join(&path))
.with_context(|| format!("Creating directory {}", path))?;
} else {
extract_node(node, partition.as_mut(), &files_dir, &path, is_wii, args.quiet)?;
}
}
Ok(())
}
fn extract_sys_files(header: &dyn PartHeader, out_dir: &Path, quiet: bool) -> Result<()> {
fn extract_sys_files(data: &PartitionMeta, out_dir: &Path, quiet: bool) -> Result<()> {
fs::create_dir_all(out_dir)
.with_context(|| format!("Creating output directory {}", out_dir.display()))?;
extract_file(header.boot_bytes(), &out_dir.join("boot.bin"), quiet)?;
extract_file(header.bi2_bytes(), &out_dir.join("bi2.bin"), quiet)?;
extract_file(header.apploader_bytes(), &out_dir.join("apploader.img"), quiet)?;
extract_file(header.fst_bytes(), &out_dir.join("fst.bin"), quiet)?;
extract_file(header.dol_bytes(), &out_dir.join("main.dol"), quiet)?;
extract_file(&data.raw_boot, &out_dir.join("boot.bin"), quiet)?;
extract_file(&data.raw_bi2, &out_dir.join("bi2.bin"), quiet)?;
extract_file(&data.raw_apploader, &out_dir.join("apploader.img"), quiet)?;
extract_file(&data.raw_fst, &out_dir.join("fst.bin"), quiet)?;
extract_file(&data.raw_dol, &out_dir.join("main.dol"), quiet)?;
Ok(())
}
@ -203,53 +533,93 @@ fn extract_file(bytes: &[u8], out_path: &Path, quiet: bool) -> Result<()> {
}
fn extract_node(
node: &NodeType,
partition: &mut dyn PartReadStream,
node: &Node,
partition: &mut dyn PartitionBase,
base_path: &Path,
name: &str,
is_wii: bool,
quiet: bool,
) -> Result<()> {
match node {
NodeType::File(v) => {
let mut file_path = base_path.to_path_buf();
file_path.push(v.name.as_str());
if !quiet {
println!(
"Extracting {} (size: {})",
file_path.display(),
file_size::fit_4(v.length as u64)
);
}
let file = File::create(&file_path)
.with_context(|| format!("Creating file {}", file_path.display()))?;
let mut buf_writer = BufWriter::with_capacity(partition.ideal_buffer_size(), file);
let mut stream = partition.begin_file_stream(v).with_context(|| {
format!(
"Opening file {} on disc for reading (offset {}, size {})",
v.name, v.offset, v.length
)
})?;
io::copy(&mut stream, &mut buf_writer)
.with_context(|| format!("Extracting file {}", file_path.display()))?;
buf_writer.flush().with_context(|| format!("Flushing file {}", file_path.display()))?;
}
NodeType::Directory(v, c) => {
if v.name.is_empty() {
fs::create_dir_all(base_path).with_context(|| {
format!("Creating output directory {}", base_path.display())
})?;
for x in c {
extract_node(x, partition, base_path, quiet)?;
}
} else {
let mut new_base = base_path.to_path_buf();
new_base.push(v.name.as_str());
fs::create_dir_all(&new_base)
.with_context(|| format!("Creating output directory {}", new_base.display()))?;
for x in c {
extract_node(x, partition, new_base.as_path(), quiet)?;
}
}
}
let file_path = base_path.join(name);
if !quiet {
println!(
"Extracting {} (size: {})",
file_path.display(),
file_size::fit_4(node.length(is_wii))
);
}
let file = File::create(&file_path)
.with_context(|| format!("Creating file {}", file_path.display()))?;
let mut w = BufWriter::with_capacity(partition.ideal_buffer_size(), file);
let mut r = partition.open_file(node).with_context(|| {
format!(
"Opening file {} on disc for reading (offset {}, size {})",
name,
node.offset(is_wii),
node.length(is_wii)
)
})?;
io::copy(&mut r, &mut w).with_context(|| format!("Extracting file {}", file_path.display()))?;
w.flush().with_context(|| format!("Flushing file {}", file_path.display()))?;
Ok(())
}
fn digest_thread<H>() -> (SyncSender<Arc<[u8]>>, JoinHandle<DigestResult>)
where H: Hasher + Send + 'static {
let (tx, rx) = sync_channel::<Arc<[u8]>>(1);
let handle = thread::spawn(move || {
let mut hasher = H::new();
while let Ok(data) = rx.recv() {
hasher.update(data.as_ref());
}
hasher.finalize()
});
(tx, handle)
}
enum DigestResult {
Crc32(u32),
Md5(Output<md5::Md5>),
Sha1(Output<sha1::Sha1>),
Xxh64(u64),
}
trait Hasher {
fn new() -> Self;
fn finalize(self) -> DigestResult;
fn update(&mut self, data: &[u8]);
}
impl Hasher for md5::Md5 {
fn new() -> Self { Digest::new() }
fn finalize(self) -> DigestResult { DigestResult::Md5(Digest::finalize(self)) }
fn update(&mut self, data: &[u8]) { Digest::update(self, data) }
}
impl Hasher for sha1::Sha1 {
fn new() -> Self { Digest::new() }
fn finalize(self) -> DigestResult { DigestResult::Sha1(Digest::finalize(self)) }
fn update(&mut self, data: &[u8]) { Digest::update(self, data) }
}
impl Hasher for crc32fast::Hasher {
fn new() -> Self { crc32fast::Hasher::new() }
fn finalize(self) -> DigestResult { DigestResult::Crc32(crc32fast::Hasher::finalize(self)) }
fn update(&mut self, data: &[u8]) { crc32fast::Hasher::update(self, data) }
}
impl Hasher for xxhash_rust::xxh64::Xxh64 {
fn new() -> Self { xxhash_rust::xxh64::Xxh64::new(0) }
fn finalize(self) -> DigestResult {
DigestResult::Xxh64(xxhash_rust::xxh64::Xxh64::digest(&self))
}
fn update(&mut self, data: &[u8]) { xxhash_rust::xxh64::Xxh64::update(self, data) }
}

248
src/disc/gcn.rs
View File

@ -1,77 +1,109 @@
use std::{
io,
io::{Cursor, Read, Seek, SeekFrom},
io::{Read, Seek, SeekFrom},
mem::size_of,
};
use zerocopy::FromBytes;
use crate::{
array_ref,
disc::{
AppLoaderHeader, DiscBase, DiscIO, DolHeader, Header, PartHeader, PartReadStream,
PartitionHeader, PartitionType, SECTOR_SIZE,
AppLoaderHeader, DiscBase, DiscHeader, DiscIO, DolHeader, PartitionBase, PartitionHeader,
PartitionInfo, PartitionKind, PartitionMeta, BI2_SIZE, BOOT_SIZE, MINI_DVD_SIZE,
SECTOR_SIZE,
},
fst::{find_node, read_fst, Node, NodeKind, NodeType},
fst::{Node, NodeKind},
streams::{ReadStream, SharedWindowedReadStream},
util::{
div_rem,
reader::{read_bytes, FromReader},
reader::{read_from, read_vec},
},
Error, Result, ResultContext,
Error, OpenOptions, Result, ResultContext,
};
pub(crate) struct DiscGCN {
pub(crate) header: Header,
pub(crate) header: DiscHeader,
pub(crate) disc_size: u64,
// pub(crate) junk_start: u64,
}
impl DiscGCN {
pub(crate) fn new(header: Header) -> Result<DiscGCN> { Ok(DiscGCN { header }) }
pub(crate) fn new(
_stream: &mut dyn ReadStream,
header: DiscHeader,
disc_size: Option<u64>,
) -> Result<DiscGCN> {
// stream.seek(SeekFrom::Start(size_of::<DiscHeader>() as u64)).context("Seeking to partition header")?;
// let partition_header: PartitionHeader = read_from(stream).context("Reading partition header")?;
// let junk_start = partition_header.fst_off(false) + partition_header.fst_sz(false);
Ok(DiscGCN { header, disc_size: disc_size.unwrap_or(MINI_DVD_SIZE) /*, junk_start*/ })
}
}
fn open_partition<'a>(disc_io: &'a dyn DiscIO) -> Result<Box<dyn PartitionBase + 'a>> {
let stream = disc_io.open()?;
Ok(Box::new(PartitionGC { stream, offset: 0, cur_block: u32::MAX, buf: [0; SECTOR_SIZE] }))
}
impl DiscBase for DiscGCN {
fn get_header(&self) -> &Header { &self.header }
fn header(&self) -> &DiscHeader { &self.header }
fn get_data_partition<'a>(
&self,
disc_io: &'a mut dyn DiscIO,
_validate_hashes: bool,
) -> Result<Box<dyn PartReadStream + 'a>> {
let stream = disc_io.begin_read_stream(0).context("Opening data partition stream")?;
Ok(Box::from(GCPartReadStream {
stream,
offset: 0,
cur_block: u32::MAX,
buf: [0; SECTOR_SIZE],
}))
fn partitions(&self) -> Vec<PartitionInfo> {
vec![PartitionInfo {
group_index: 0,
part_index: 0,
part_offset: 0,
kind: PartitionKind::Data,
data_offset: 0,
data_size: self.disc_size,
header: None,
lfg_seed: *array_ref!(self.header.game_id, 0, 4),
// junk_start: self.junk_start,
}]
}
fn get_partition<'a>(
fn open_partition<'a>(
&self,
disc_io: &'a mut dyn DiscIO,
part_type: PartitionType,
_validate_hashes: bool,
) -> Result<Box<dyn PartReadStream + 'a>> {
if part_type == PartitionType::Data {
Ok(Box::from(GCPartReadStream {
stream: disc_io.begin_read_stream(0).context("Opening partition read stream")?,
offset: 0,
cur_block: u32::MAX,
buf: [0; SECTOR_SIZE],
}))
} else {
Err(Error::DiscFormat(format!(
disc_io: &'a dyn DiscIO,
index: usize,
_options: &OpenOptions,
) -> Result<Box<dyn PartitionBase + 'a>> {
if index != 0 {
return Err(Error::DiscFormat(format!(
"Invalid partition index {} for GameCube disc",
index
)));
}
open_partition(disc_io)
}
fn open_partition_kind<'a>(
&self,
disc_io: &'a dyn DiscIO,
part_type: PartitionKind,
_options: &OpenOptions,
) -> Result<Box<dyn PartitionBase + 'a>> {
if part_type != PartitionKind::Data {
return Err(Error::DiscFormat(format!(
"Invalid partition type {:?} for GameCube disc",
part_type
)))
)));
}
open_partition(disc_io)
}
fn disc_size(&self) -> u64 { self.disc_size }
}
struct GCPartReadStream<'a> {
struct PartitionGC<'a> {
stream: Box<dyn ReadStream + 'a>,
offset: u64,
cur_block: u32,
buf: [u8; SECTOR_SIZE],
}
impl<'a> Read for GCPartReadStream<'a> {
impl<'a> Read for PartitionGC<'a> {
fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
let (block, block_offset) = div_rem(self.offset, SECTOR_SIZE as u64);
let mut block = block as u32;
@ -104,12 +136,12 @@ impl<'a> Read for GCPartReadStream<'a> {
}
}
impl<'a> Seek for GCPartReadStream<'a> {
impl<'a> Seek for PartitionGC<'a> {
fn seek(&mut self, pos: SeekFrom) -> io::Result<u64> {
self.offset = match pos {
SeekFrom::Start(v) => v,
SeekFrom::End(v) => (self.stable_stream_len()? as i64 + v) as u64,
SeekFrom::Current(v) => (self.offset as i64 + v) as u64,
SeekFrom::End(v) => self.stable_stream_len()?.saturating_add_signed(v),
SeekFrom::Current(v) => self.offset.saturating_add_signed(v),
};
let block = self.offset / SECTOR_SIZE as u64;
if block as u32 != self.cur_block {
@ -122,138 +154,94 @@ impl<'a> Seek for GCPartReadStream<'a> {
fn stream_position(&mut self) -> io::Result<u64> { Ok(self.offset) }
}
impl<'a> ReadStream for GCPartReadStream<'a> {
impl<'a> ReadStream for PartitionGC<'a> {
fn stable_stream_len(&mut self) -> io::Result<u64> { self.stream.stable_stream_len() }
fn as_dyn(&mut self) -> &mut dyn ReadStream { self }
}
impl<'a> PartReadStream for GCPartReadStream<'a> {
fn begin_file_stream(&mut self, node: &Node) -> io::Result<SharedWindowedReadStream> {
assert_eq!(node.kind, NodeKind::File);
self.new_window(node.offset as u64, node.length as u64)
impl<'a> PartitionBase for PartitionGC<'a> {
fn meta(&mut self) -> Result<Box<PartitionMeta>> {
self.seek(SeekFrom::Start(0)).context("Seeking to partition header")?;
read_part_header(self, false)
}
fn read_header(&mut self) -> Result<Box<dyn PartHeader>> {
self.seek(SeekFrom::Start(0)).context("Seeking to partition header")?;
Ok(Box::from(read_part_header(self)?))
fn open_file(&mut self, node: &Node) -> io::Result<SharedWindowedReadStream> {
assert_eq!(node.kind(), NodeKind::File);
self.new_window(node.offset(false), node.length(false))
}
fn ideal_buffer_size(&self) -> usize { SECTOR_SIZE }
}
const BOOT_SIZE: usize = Header::STATIC_SIZE + PartitionHeader::STATIC_SIZE;
const BI2_SIZE: usize = 0x2000;
#[derive(Clone, Debug)]
pub(crate) struct GCPartition {
raw_boot: [u8; BOOT_SIZE],
raw_bi2: [u8; BI2_SIZE],
raw_apploader: Vec<u8>,
raw_fst: Vec<u8>,
raw_dol: Vec<u8>,
// Parsed
header: Header,
partition_header: PartitionHeader,
apploader_header: AppLoaderHeader,
root_node: NodeType,
dol_header: DolHeader,
}
fn read_part_header<R>(reader: &mut R) -> Result<GCPartition>
pub(crate) fn read_part_header<R>(reader: &mut R, is_wii: bool) -> Result<Box<PartitionMeta>>
where R: Read + Seek + ?Sized {
// boot.bin
let raw_boot = <[u8; BOOT_SIZE]>::from_reader(reader).context("Reading boot.bin")?;
let mut boot_bytes = raw_boot.as_slice();
let header = Header::from_reader(&mut boot_bytes).context("Parsing disc header")?;
let partition_header =
PartitionHeader::from_reader(&mut boot_bytes).context("Parsing partition header")?;
debug_assert_eq!(boot_bytes.len(), 0, "failed to consume boot.bin");
let raw_boot: [u8; BOOT_SIZE] = read_from(reader).context("Reading boot.bin")?;
let partition_header = PartitionHeader::ref_from(&raw_boot[size_of::<DiscHeader>()..]).unwrap();
// bi2.bin
let raw_bi2 = <[u8; BI2_SIZE]>::from_reader(reader).context("Reading bi2.bin")?;
let raw_bi2: [u8; BI2_SIZE] = read_from(reader).context("Reading bi2.bin")?;
// apploader.bin
let mut raw_apploader =
read_bytes(reader, AppLoaderHeader::STATIC_SIZE).context("Reading apploader header")?;
let apploader_header = AppLoaderHeader::from_reader(&mut raw_apploader.as_slice())
.context("Parsing apploader header")?;
let mut raw_apploader: Vec<u8> =
read_vec(reader, size_of::<AppLoaderHeader>()).context("Reading apploader header")?;
let apploader_header = AppLoaderHeader::ref_from(raw_apploader.as_slice()).unwrap();
raw_apploader.resize(
AppLoaderHeader::STATIC_SIZE
+ apploader_header.size as usize
+ apploader_header.trailer_size as usize,
size_of::<AppLoaderHeader>()
+ apploader_header.size.get() as usize
+ apploader_header.trailer_size.get() as usize,
0,
);
reader
.read_exact(&mut raw_apploader[AppLoaderHeader::STATIC_SIZE..])
.read_exact(&mut raw_apploader[size_of::<AppLoaderHeader>()..])
.context("Reading apploader")?;
// fst.bin
reader
.seek(SeekFrom::Start(partition_header.fst_off as u64))
.seek(SeekFrom::Start(partition_header.fst_off(is_wii)))
.context("Seeking to FST offset")?;
let raw_fst = read_bytes(reader, partition_header.fst_sz as usize).with_context(|| {
format!(
"Reading partition FST (offset {}, size {})",
partition_header.fst_off, partition_header.fst_sz
)
})?;
let root_node = read_fst(&mut Cursor::new(&*raw_fst))?;
let raw_fst: Vec<u8> = read_vec(reader, partition_header.fst_sz(is_wii) as usize)
.with_context(|| {
format!(
"Reading partition FST (offset {}, size {})",
partition_header.fst_off, partition_header.fst_sz
)
})?;
// main.dol
reader
.seek(SeekFrom::Start(partition_header.dol_off as u64))
.seek(SeekFrom::Start(partition_header.dol_off(is_wii)))
.context("Seeking to DOL offset")?;
let mut raw_dol = read_bytes(reader, DolHeader::STATIC_SIZE).context("Reading DOL header")?;
let dol_header =
DolHeader::from_reader(&mut raw_dol.as_slice()).context("Parsing DOL header")?;
let mut raw_dol: Vec<u8> =
read_vec(reader, size_of::<DolHeader>()).context("Reading DOL header")?;
let dol_header = DolHeader::ref_from(raw_dol.as_slice()).unwrap();
let dol_size = dol_header
.text_offs
.iter()
.zip(&dol_header.text_sizes)
.map(|(offs, size)| offs + size)
.map(|(offs, size)| offs.get() + size.get())
.chain(
dol_header.data_offs.iter().zip(&dol_header.data_sizes).map(|(offs, size)| offs + size),
dol_header
.data_offs
.iter()
.zip(&dol_header.data_sizes)
.map(|(offs, size)| offs.get() + size.get()),
)
.max()
.unwrap_or(DolHeader::STATIC_SIZE as u32);
.unwrap_or(size_of::<DolHeader>() as u32);
raw_dol.resize(dol_size as usize, 0);
reader.read_exact(&mut raw_dol[DolHeader::STATIC_SIZE..]).context("Reading DOL")?;
reader.read_exact(&mut raw_dol[size_of::<DolHeader>()..]).context("Reading DOL")?;
Ok(GCPartition {
Ok(Box::new(PartitionMeta {
raw_boot,
raw_bi2,
raw_apploader,
raw_fst,
raw_dol,
header,
partition_header,
apploader_header,
root_node,
dol_header,
})
}
impl PartHeader for GCPartition {
fn root_node(&self) -> &NodeType { &self.root_node }
fn find_node(&self, path: &str) -> Option<&NodeType> { find_node(&self.root_node, path) }
fn boot_bytes(&self) -> &[u8] { &self.raw_boot }
fn bi2_bytes(&self) -> &[u8] { &self.raw_bi2 }
fn apploader_bytes(&self) -> &[u8] { &self.raw_apploader }
fn fst_bytes(&self) -> &[u8] { &self.raw_fst }
fn dol_bytes(&self) -> &[u8] { &self.raw_dol }
fn disc_header(&self) -> &Header { &self.header }
fn partition_header(&self) -> &PartitionHeader { &self.partition_header }
fn apploader_header(&self) -> &AppLoaderHeader { &self.apploader_header }
fn dol_header(&self) -> &DolHeader { &self.dol_header }
raw_ticket: None,
raw_tmd: None,
raw_cert_chain: None,
raw_h3_table: None,
}))
}

589
src/disc/mod.rs
View File

@ -1,311 +1,332 @@
//! Disc type related logic (GameCube, Wii)
use std::{ffi::CStr, fmt::Debug, io, io::Read};
use std::{
borrow::Cow,
ffi::CStr,
fmt::{Debug, Display, Formatter},
io,
mem::size_of,
str::from_utf8,
};
use zerocopy::{big_endian::*, AsBytes, FromBytes, FromZeroes};
use crate::{
disc::{gcn::DiscGCN, wii::DiscWii},
fst::{Node, NodeType},
disc::{
gcn::DiscGCN,
wii::{DiscWii, Ticket, TmdHeader, WiiPartitionHeader},
},
fst::Node,
io::DiscIO,
static_assert,
streams::{ReadStream, SharedWindowedReadStream},
util::reader::{skip_bytes, struct_size, FromReader},
Error, Result, ResultContext,
util::reader::read_from,
Error, Fst, OpenOptions, Result, ResultContext,
};
pub(crate) mod gcn;
pub(crate) mod wii;
pub(crate) const SECTOR_SIZE: usize = 0x8000;
/// Shared GameCube & Wii disc header
#[derive(Clone, Debug, PartialEq)]
pub struct Header {
#[derive(Clone, Debug, PartialEq, FromBytes, FromZeroes, AsBytes)]
#[repr(C, align(4))]
pub struct DiscHeader {
/// Game ID (e.g. GM8E01 for Metroid Prime)
pub game_id: [u8; 6],
/// Used in multi-disc games
pub disc_num: u8,
/// Disc version
pub disc_version: u8,
/// Audio streaming enabled (bool)
/// Audio streaming enabled
pub audio_streaming: u8,
/// Audio streaming buffer size
pub audio_stream_buf_size: u8,
/// Padding
_pad1: [u8; 14],
/// If this is a Wii disc, this will be 0x5D1C9EA3
pub wii_magic: u32,
pub wii_magic: U32,
/// If this is a GameCube disc, this will be 0xC2339F3D
pub gcn_magic: u32,
pub gcn_magic: U32,
/// Game title
pub game_title: String,
/// Disable hash verification
pub disable_hash_verification: u8,
/// Disable disc encryption and H3 hash table loading and verification
pub disable_disc_enc: u8,
pub game_title: [u8; 64],
/// If 1, disc omits partition hashes
pub no_partition_hashes: u8,
/// If 1, disc omits partition encryption
pub no_partition_encryption: u8,
/// Padding
_pad2: [u8; 926],
}
fn from_c_str(bytes: &[u8]) -> io::Result<String> {
CStr::from_bytes_until_nul(bytes)
.map_err(|e| io::Error::new(io::ErrorKind::InvalidData, e))?
.to_str()
.map_err(|e| io::Error::new(io::ErrorKind::InvalidData, e))
.map(|s| s.to_string())
}
static_assert!(size_of::<DiscHeader>() == 0x400);
impl FromReader for Header {
type Args<'a> = ();
impl DiscHeader {
/// Game ID as a string.
pub fn game_id_str(&self) -> &str { from_utf8(&self.game_id).unwrap_or("[invalid]") }
const STATIC_SIZE: usize = 0x400;
fn from_reader_args<R>(reader: &mut R, _args: Self::Args<'_>) -> io::Result<Self>
where R: Read + ?Sized {
let game_id = <[u8; 6]>::from_reader(reader)?;
let disc_num = u8::from_reader(reader)?;
let disc_version = u8::from_reader(reader)?;
let audio_streaming = u8::from_reader(reader)?;
let audio_stream_buf_size = u8::from_reader(reader)?;
skip_bytes::<14, _>(reader)?; // padding
let wii_magic = u32::from_reader(reader)?;
let gcn_magic = u32::from_reader(reader)?;
let game_title = from_c_str(&<[u8; 64]>::from_reader(reader)?)?;
let disable_hash_verification = u8::from_reader(reader)?;
let disable_disc_enc = u8::from_reader(reader)?;
skip_bytes::<926, _>(reader)?; // padding
Ok(Self {
game_id,
disc_num,
disc_version,
audio_streaming,
audio_stream_buf_size,
wii_magic,
gcn_magic,
game_title,
disable_hash_verification,
disable_disc_enc,
})
/// Game title as a string.
pub fn game_title_str(&self) -> &str {
CStr::from_bytes_until_nul(&self.game_title)
.ok()
.and_then(|c| c.to_str().ok())
.unwrap_or("[invalid]")
}
/// Whether this is a GameCube disc.
pub fn is_gamecube(&self) -> bool { self.gcn_magic.get() == 0xC2339F3D }
/// Whether this is a Wii disc.
pub fn is_wii(&self) -> bool { self.wii_magic.get() == 0x5D1C9EA3 }
}
/// Partition header
#[derive(Clone, Debug, PartialEq)]
#[derive(Clone, Debug, PartialEq, FromBytes, FromZeroes, AsBytes)]
#[repr(C, align(4))]
pub struct PartitionHeader {
/// Debug monitor offset
pub debug_mon_off: u32,
pub debug_mon_off: U32,
/// Debug monitor load address
pub debug_load_addr: u32,
pub debug_load_addr: U32,
/// Padding
_pad1: [u8; 0x18],
/// Offset to main DOL (Wii: >> 2)
pub dol_off: u32,
pub dol_off: U32,
/// Offset to file system table (Wii: >> 2)
pub fst_off: u32,
/// File system size
pub fst_sz: u32,
/// File system max size
pub fst_max_sz: u32,
pub fst_off: U32,
/// File system size (Wii: >> 2)
pub fst_sz: U32,
/// File system max size (Wii: >> 2)
pub fst_max_sz: U32,
/// File system table load address
pub fst_memory_address: u32,
pub fst_memory_address: U32,
/// User position
pub user_position: u32,
pub user_position: U32,
/// User size
pub user_sz: u32,
pub user_sz: U32,
/// Padding
_pad2: [u8; 4],
}
impl FromReader for PartitionHeader {
type Args<'a> = ();
static_assert!(size_of::<PartitionHeader>() == 0x40);
const STATIC_SIZE: usize = struct_size([
u32::STATIC_SIZE, // debug_mon_off
u32::STATIC_SIZE, // debug_load_addr
0x18, // padding
u32::STATIC_SIZE, // dol_off
u32::STATIC_SIZE, // fst_off
u32::STATIC_SIZE, // fst_sz
u32::STATIC_SIZE, // fst_max_sz
u32::STATIC_SIZE, // fst_memory_address
u32::STATIC_SIZE, // user_position
u32::STATIC_SIZE, // user_sz
4, // padding
]);
impl PartitionHeader {
pub fn dol_off(&self, is_wii: bool) -> u64 {
if is_wii {
self.dol_off.get() as u64 * 4
} else {
self.dol_off.get() as u64
}
}
fn from_reader_args<R>(reader: &mut R, _args: Self::Args<'_>) -> io::Result<Self>
where R: Read + ?Sized {
let debug_mon_off = u32::from_reader(reader)?;
let debug_load_addr = u32::from_reader(reader)?;
skip_bytes::<0x18, _>(reader)?; // padding
let dol_off = u32::from_reader(reader)?;
let fst_off = u32::from_reader(reader)?;
let fst_sz = u32::from_reader(reader)?;
let fst_max_sz = u32::from_reader(reader)?;
let fst_memory_address = u32::from_reader(reader)?;
let user_position = u32::from_reader(reader)?;
let user_sz = u32::from_reader(reader)?;
skip_bytes::<4, _>(reader)?; // padding
Ok(Self {
debug_mon_off,
debug_load_addr,
dol_off,
fst_off,
fst_sz,
fst_max_sz,
fst_memory_address,
user_position,
user_sz,
})
pub fn fst_off(&self, is_wii: bool) -> u64 {
if is_wii {
self.fst_off.get() as u64 * 4
} else {
self.fst_off.get() as u64
}
}
pub fn fst_sz(&self, is_wii: bool) -> u64 {
if is_wii {
self.fst_sz.get() as u64 * 4
} else {
self.fst_sz.get() as u64
}
}
pub fn fst_max_sz(&self, is_wii: bool) -> u64 {
if is_wii {
self.fst_max_sz.get() as u64 * 4
} else {
self.fst_max_sz.get() as u64
}
}
}
#[derive(Debug, PartialEq, Clone)]
/// Apploader header
#[derive(Debug, PartialEq, Clone, FromBytes, FromZeroes, AsBytes)]
#[repr(C, align(4))]
pub struct AppLoaderHeader {
pub date: String,
pub entry_point: u32,
pub size: u32,
pub trailer_size: u32,
/// Apploader build date
pub date: [u8; 16],
/// Entry point
pub entry_point: U32,
/// Apploader size
pub size: U32,
/// Apploader trailer size
pub trailer_size: U32,
/// Padding
_pad: [u8; 4],
}
impl FromReader for AppLoaderHeader {
type Args<'a> = ();
const STATIC_SIZE: usize = struct_size([
16, // date
u32::STATIC_SIZE, // entry_point
u32::STATIC_SIZE, // size
u32::STATIC_SIZE, // trailer_size
4, // padding
]);
fn from_reader_args<R>(reader: &mut R, _args: Self::Args<'_>) -> io::Result<Self>
where R: Read + ?Sized {
let date = from_c_str(&<[u8; 16]>::from_reader(reader)?)?;
let entry_point = u32::from_reader(reader)?;
let size = u32::from_reader(reader)?;
let trailer_size = u32::from_reader(reader)?;
skip_bytes::<4, _>(reader)?; // padding
Ok(Self { date, entry_point, size, trailer_size })
impl AppLoaderHeader {
/// Apploader build date as a string
pub fn date_str(&self) -> Option<&str> {
CStr::from_bytes_until_nul(&self.date).ok().and_then(|c| c.to_str().ok())
}
}
/// Maximum number of text sections in a DOL
pub const DOL_MAX_TEXT_SECTIONS: usize = 7;
/// Maximum number of data sections in a DOL
pub const DOL_MAX_DATA_SECTIONS: usize = 11;
#[derive(Debug, Clone)]
/// DOL header
#[derive(Debug, Clone, FromBytes, FromZeroes)]
pub struct DolHeader {
pub text_offs: [u32; DOL_MAX_TEXT_SECTIONS],
pub data_offs: [u32; DOL_MAX_DATA_SECTIONS],
pub text_addrs: [u32; DOL_MAX_TEXT_SECTIONS],
pub data_addrs: [u32; DOL_MAX_DATA_SECTIONS],
pub text_sizes: [u32; DOL_MAX_TEXT_SECTIONS],
pub data_sizes: [u32; DOL_MAX_DATA_SECTIONS],
pub bss_addr: u32,
pub bss_size: u32,
pub entry_point: u32,
/// Text section offsets
pub text_offs: [U32; DOL_MAX_TEXT_SECTIONS],
/// Data section offsets
pub data_offs: [U32; DOL_MAX_DATA_SECTIONS],
/// Text section addresses
pub text_addrs: [U32; DOL_MAX_TEXT_SECTIONS],
/// Data section addresses
pub data_addrs: [U32; DOL_MAX_DATA_SECTIONS],
/// Text section sizes
pub text_sizes: [U32; DOL_MAX_TEXT_SECTIONS],
/// Data section sizes
pub data_sizes: [U32; DOL_MAX_DATA_SECTIONS],
/// BSS address
pub bss_addr: U32,
/// BSS size
pub bss_size: U32,
/// Entry point
pub entry_point: U32,
/// Padding
_pad: [u8; 0x1C],
}
impl FromReader for DolHeader {
type Args<'a> = ();
const STATIC_SIZE: usize = 0x100;
fn from_reader_args<R>(reader: &mut R, _args: Self::Args<'_>) -> io::Result<Self>
where R: Read + ?Sized {
let result = Self {
text_offs: <_>::from_reader(reader)?,
data_offs: <_>::from_reader(reader)?,
text_addrs: <_>::from_reader(reader)?,
data_addrs: <_>::from_reader(reader)?,
text_sizes: <_>::from_reader(reader)?,
data_sizes: <_>::from_reader(reader)?,
bss_addr: <_>::from_reader(reader)?,
bss_size: <_>::from_reader(reader)?,
entry_point: <_>::from_reader(reader)?,
};
skip_bytes::<0x1C, _>(reader)?; // padding
Ok(result)
}
}
static_assert!(size_of::<DolHeader>() == 0x100);
/// Partition type
#[derive(Debug, PartialEq, Eq, Copy, Clone)]
pub enum PartitionType {
pub enum PartitionKind {
Data,
Update,
Channel,
Other(u32),
}
pub(crate) const SECTOR_SIZE: usize = 0x8000;
impl Display for PartitionKind {
fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
match self {
Self::Data => write!(f, "Data"),
Self::Update => write!(f, "Update"),
Self::Channel => write!(f, "Channel"),
Self::Other(v) => {
let bytes = v.to_be_bytes();
write!(f, "Other ({:08X}, {})", v, String::from_utf8_lossy(&bytes))
}
}
}
}
impl PartitionKind {
/// Returns the directory name for the partition kind.
pub fn dir_name(&self) -> Cow<str> {
match self {
Self::Data => Cow::Borrowed("DATA"),
Self::Update => Cow::Borrowed("UPDATE"),
Self::Channel => Cow::Borrowed("CHANNEL"),
Self::Other(v) => {
let bytes = v.to_be_bytes();
Cow::Owned(format!("P-{}", String::from_utf8_lossy(&bytes)))
}
}
}
}
impl From<u32> for PartitionKind {
fn from(v: u32) -> Self {
match v {
0 => Self::Data,
1 => Self::Update,
2 => Self::Channel,
v => Self::Other(v),
}
}
}
/// Information about a GameCube or Wii disc partition.
#[derive(Debug, Clone)]
pub struct PartitionInfo {
/// Partition group index
pub group_index: u32,
/// Partition index within the group
pub part_index: u32,
/// Partition offset within disc
pub part_offset: u64,
/// Partition kind
pub kind: PartitionKind,
/// Data offset within partition
pub data_offset: u64,
/// Data size
pub data_size: u64,
/// Raw Wii partition header
pub header: Option<WiiPartitionHeader>,
/// Lagged Fibonacci generator seed (for junk data)
pub lfg_seed: [u8; 4],
// /// Junk data start offset
// pub junk_start: u64,
}
/// Contains a disc's header & partition information.
pub trait DiscBase: Send + Sync {
/// Retrieves the disc's header.
fn get_header(&self) -> &Header;
fn header(&self) -> &DiscHeader;
/// Opens a new partition read stream for the first data partition.
/// A list of partitions on the disc.
fn partitions(&self) -> Vec<PartitionInfo>;
/// Opens a new, decrypted partition read stream for the specified partition index.
///
/// `validate_hashes`: Validate Wii disc hashes while reading (slow!)
///
/// # Examples
///
/// Basic usage:
/// ```no_run
/// use nod::{
/// disc::new_disc_base,
/// io::{new_disc_io, DiscIOOptions},
/// };
///
/// # fn main() -> nod::Result<()> {
/// let options = DiscIOOptions::default();
/// let mut disc_io = new_disc_io("path/to/file.iso".as_ref(), &options)?;
/// let disc_base = new_disc_base(disc_io.as_mut())?;
/// let mut partition = disc_base.get_data_partition(disc_io.as_mut(), false)?;
/// # Ok(())
/// # }
/// ```
fn get_data_partition<'a>(
fn open_partition<'a>(
&self,
disc_io: &'a mut dyn DiscIO,
validate_hashes: bool,
) -> Result<Box<dyn PartReadStream + 'a>>;
disc_io: &'a dyn DiscIO,
index: usize,
options: &OpenOptions,
) -> Result<Box<dyn PartitionBase + 'a>>;
/// Opens a new partition read stream for the first partition matching
/// the specified type.
///
/// `validate_hashes`: Validate Wii disc hashes while reading (slow!)
fn get_partition<'a>(
fn open_partition_kind<'a>(
&self,
disc_io: &'a mut dyn DiscIO,
part_type: PartitionType,
validate_hashes: bool,
) -> Result<Box<dyn PartReadStream + 'a>>;
disc_io: &'a dyn DiscIO,
part_type: PartitionKind,
options: &OpenOptions,
) -> Result<Box<dyn PartitionBase + 'a>>;
/// The disc's size in bytes, or an estimate if not stored by the format.
fn disc_size(&self) -> u64;
}
/// Creates a new [`DiscBase`] instance.
///
/// # Examples
///
/// Basic usage:
/// ```no_run
/// use nod::{
/// disc::new_disc_base,
/// io::{new_disc_io, DiscIOOptions},
/// };
///
/// # fn main() -> nod::Result<()> {
/// let options = DiscIOOptions::default();
/// let mut disc_io = new_disc_io("path/to/file.iso".as_ref(), &options)?;
/// let disc_base = new_disc_base(disc_io.as_mut())?;
/// disc_base.get_header();
/// # Ok(())
/// # }
/// ```
pub fn new_disc_base(disc_io: &mut dyn DiscIO) -> Result<Box<dyn DiscBase>> {
let mut stream = disc_io.begin_read_stream(0).context("Opening disc stream")?;
let header_bytes =
<[u8; Header::STATIC_SIZE]>::from_reader(&mut stream).context("Reading disc header")?;
let header =
Header::from_reader(&mut header_bytes.as_slice()).context("Parsing disc header")?;
if header.wii_magic == 0x5D1C9EA3 {
Ok(Box::from(DiscWii::new(stream.as_mut(), header)?))
} else if header.gcn_magic == 0xC2339F3D {
Ok(Box::from(DiscGCN::new(header)?))
pub fn new(disc_io: &mut dyn DiscIO) -> Result<Box<dyn DiscBase>> {
let disc_size = disc_io.disc_size();
let mut stream = disc_io.open()?;
let header: DiscHeader = read_from(stream.as_mut()).context("Reading disc header")?;
if header.is_wii() {
Ok(Box::new(DiscWii::new(stream.as_mut(), header, disc_size)?))
} else if header.is_gamecube() {
Ok(Box::new(DiscGCN::new(stream.as_mut(), header, disc_size)?))
} else {
Err(Error::DiscFormat(format!("Invalid GC/Wii magic: {:#010X}", header.wii_magic)))
Err(Error::DiscFormat(format!(
"Invalid GC/Wii magic: {:#010X}/{:#010X}",
header.gcn_magic.get(),
header.wii_magic.get()
)))
}
}
/// An open read stream for a disc partition.
pub trait PartReadStream: ReadStream {
pub trait PartitionBase: ReadStream {
/// Reads the partition header and file system table.
fn meta(&mut self) -> Result<Box<PartitionMeta>>;
/// Seeks the read stream to the specified file system node
/// and returns a windowed stream.
///
@ -315,22 +336,17 @@ pub trait PartReadStream: ReadStream {
/// ```no_run
/// use std::io::Read;
///
/// use nod::{
/// disc::{new_disc_base, PartHeader},
/// fst::NodeType,
/// io::{new_disc_io, DiscIOOptions},
/// };
/// use nod::{Disc, PartitionKind};
///
/// fn main() -> nod::Result<()> {
/// let options = DiscIOOptions::default();
/// let mut disc_io = new_disc_io("path/to/file.iso".as_ref(), &options)?;
/// let disc_base = new_disc_base(disc_io.as_mut())?;
/// let mut partition = disc_base.get_data_partition(disc_io.as_mut(), false)?;
/// let header = partition.read_header()?;
/// if let Some(NodeType::File(node)) = header.find_node("/MP3/Worlds.txt") {
/// let disc = Disc::new("path/to/file.iso")?;
/// let mut partition = disc.open_partition_kind(PartitionKind::Data)?;
/// let meta = partition.meta()?;
/// let fst = meta.fst()?;
/// if let Some((_, node)) = fst.find("/MP3/Worlds.txt") {
/// let mut s = String::new();
/// partition
/// .begin_file_stream(node)
/// .open_file(node)
/// .expect("Failed to open file stream")
/// .read_to_string(&mut s)
/// .expect("Failed to read file");
@ -339,10 +355,7 @@ pub trait PartReadStream: ReadStream {
/// Ok(())
/// }
/// ```
fn begin_file_stream(&mut self, node: &Node) -> io::Result<SharedWindowedReadStream>;
/// Reads the partition header and file system table.
fn read_header(&mut self) -> Result<Box<dyn PartHeader>>;
fn open_file(&mut self, node: &Node) -> io::Result<SharedWindowedReadStream>;
/// The ideal size for buffered reads from this partition.
/// GameCube discs have a data block size of 0x8000,
@ -350,64 +363,60 @@ pub trait PartReadStream: ReadStream {
fn ideal_buffer_size(&self) -> usize;
}
/// Disc partition header with file system table.
pub trait PartHeader: Debug + Send + Sync {
/// The root node for the filesystem.
fn root_node(&self) -> &NodeType;
/// Finds a particular file or directory by path.
///
/// # Examples
///
/// Basic usage:
/// ```no_run
/// use nod::{
/// disc::{new_disc_base, PartHeader},
/// fst::NodeType,
/// io::{new_disc_io, DiscIOOptions},
/// };
///
/// fn main() -> nod::Result<()> {
/// let options = DiscIOOptions::default();
/// let mut disc_io = new_disc_io("path/to/file.iso".as_ref(), &options)?;
/// let disc_base = new_disc_base(disc_io.as_mut())?;
/// let mut partition = disc_base.get_data_partition(disc_io.as_mut(), false)?;
/// let header = partition.read_header()?;
/// if let Some(NodeType::File(node)) = header.find_node("/MP1/Metroid1.pak") {
/// println!("{}", node.name);
/// }
/// if let Some(NodeType::Directory(node, children)) = header.find_node("/MP1") {
/// println!("Number of files: {}", children.len());
/// }
/// Ok(())
/// }
/// ```
fn find_node(&self, path: &str) -> Option<&NodeType>;
/// Size of the disc header and partition header (boot.bin)
pub const BOOT_SIZE: usize = size_of::<DiscHeader>() + size_of::<PartitionHeader>();
/// Size of the debug and region information (bi2.bin)
pub const BI2_SIZE: usize = 0x2000;
/// Disc partition metadata
#[derive(Clone, Debug)]
pub struct PartitionMeta {
/// Disc and partition header (boot.bin)
fn boot_bytes(&self) -> &[u8];
pub raw_boot: [u8; BOOT_SIZE],
/// Debug and region information (bi2.bin)
fn bi2_bytes(&self) -> &[u8];
pub raw_bi2: [u8; BI2_SIZE],
/// Apploader (apploader.bin)
fn apploader_bytes(&self) -> &[u8];
pub raw_apploader: Vec<u8>,
/// File system table (fst.bin)
fn fst_bytes(&self) -> &[u8];
pub raw_fst: Vec<u8>,
/// Main binary (main.dol)
fn dol_bytes(&self) -> &[u8];
/// Disc header
fn disc_header(&self) -> &Header;
/// Partition header
fn partition_header(&self) -> &PartitionHeader;
/// Apploader header
fn apploader_header(&self) -> &AppLoaderHeader;
/// DOL header
fn dol_header(&self) -> &DolHeader;
pub raw_dol: Vec<u8>,
/// Ticket (ticket.bin, Wii only)
pub raw_ticket: Option<Vec<u8>>,
/// TMD (tmd.bin, Wii only)
pub raw_tmd: Option<Vec<u8>>,
/// Certificate chain (cert.bin, Wii only)
pub raw_cert_chain: Option<Vec<u8>>,
/// H3 hash table (h3.bin, Wii only)
pub raw_h3_table: Option<Vec<u8>>,
}
impl PartitionMeta {
pub fn header(&self) -> &DiscHeader {
DiscHeader::ref_from(&self.raw_boot[..size_of::<DiscHeader>()]).unwrap()
}
pub fn partition_header(&self) -> &PartitionHeader {
PartitionHeader::ref_from(&self.raw_boot[size_of::<DiscHeader>()..]).unwrap()
}
pub fn apploader_header(&self) -> &AppLoaderHeader {
AppLoaderHeader::ref_from_prefix(&self.raw_apploader).unwrap()
}
pub fn fst(&self) -> Result<Fst, &'static str> { Fst::new(&self.raw_fst) }
pub fn dol_header(&self) -> &DolHeader { DolHeader::ref_from_prefix(&self.raw_dol).unwrap() }
pub fn ticket(&self) -> Option<&Ticket> {
self.raw_ticket.as_ref().and_then(|v| Ticket::ref_from(v))
}
pub fn tmd_header(&self) -> Option<&TmdHeader> {
self.raw_tmd.as_ref().and_then(|v| TmdHeader::ref_from_prefix(v))
}
}
pub const MINI_DVD_SIZE: u64 = 1_459_978_240;
pub const SL_DVD_SIZE: u64 = 4_699_979_776;
pub const DL_DVD_SIZE: u64 = 8_511_160_320;

768
src/disc/wii.rs
View File

@ -1,443 +1,442 @@
use std::{
io,
io::{Read, Seek, SeekFrom},
mem::size_of,
};
use aes::{
cipher::{block_padding::NoPadding, BlockDecryptMut, KeyIvInit},
Aes128, Block,
};
use sha1::{digest, Digest, Sha1};
use zerocopy::{big_endian::*, AsBytes, FromBytes, FromZeroes};
use crate::{
array_ref,
disc::{
AppLoaderHeader, DiscBase, DiscIO, DolHeader, Header, PartHeader, PartReadStream,
PartitionHeader, PartitionType, SECTOR_SIZE,
gcn::read_part_header, DiscBase, DiscHeader, DiscIO, PartitionBase, PartitionInfo,
PartitionKind, PartitionMeta, DL_DVD_SIZE, MINI_DVD_SIZE, SECTOR_SIZE, SL_DVD_SIZE,
},
fst::{find_node, Node, NodeKind, NodeType},
streams::{wrap_windowed, OwningWindowedReadStream, ReadStream, SharedWindowedReadStream},
fst::{Node, NodeKind},
io::{aes_decrypt, KeyBytes},
static_assert,
streams::{wrap_windowed, ReadStream, SharedWindowedReadStream},
util::{
div_rem,
reader::{skip_bytes, struct_size, FromReader},
reader::{read_from, read_vec},
},
Error, Result, ResultContext,
Error, OpenOptions, PartitionHeader, Result, ResultContext,
};
pub(crate) const HASHES_SIZE: usize = 0x400;
pub(crate) const BLOCK_SIZE: usize = SECTOR_SIZE - HASHES_SIZE; // 0x7C00
/// AES-128-CBC decryptor
type Aes128Cbc = cbc::Decryptor<Aes128>;
#[rustfmt::skip]
const COMMON_KEYS: [[u8; 16]; 2] = [
const COMMON_KEYS: [KeyBytes; 2] = [
/* Normal */
[0xeb, 0xe4, 0x2a, 0x22, 0x5e, 0x85, 0x93, 0xe4, 0x48, 0xd9, 0xc5, 0x45, 0x73, 0x81, 0xaa, 0xf7],
/* Korean */
[0x63, 0xb8, 0x2b, 0xb4, 0xf4, 0x61, 0x4e, 0x2e, 0x13, 0xf2, 0xfe, 0xfb, 0xba, 0x4c, 0x9b, 0x7e],
];
#[derive(Debug, PartialEq, Eq, Copy, Clone)]
enum SigType {
Rsa4096,
Rsa2048,
EllipticalCurve,
#[derive(Debug, PartialEq, FromBytes, FromZeroes, AsBytes)]
#[repr(C, align(4))]
struct WiiPartEntry {
offset: U32,
kind: U32,
}
impl FromReader for SigType {
type Args<'a> = ();
static_assert!(size_of::<WiiPartEntry>() == 8);
const STATIC_SIZE: usize = u32::STATIC_SIZE;
fn from_reader_args<R>(reader: &mut R, _args: Self::Args<'_>) -> io::Result<Self>
where R: Read + ?Sized {
match u32::from_reader(reader)? {
0x00010000 => Ok(SigType::Rsa4096),
0x00010001 => Ok(SigType::Rsa2048),
0x00010002 => Ok(SigType::EllipticalCurve),
_ => Err(io::Error::new(io::ErrorKind::InvalidData, "invalid signature type")),
}
}
}
impl SigType {
fn size(self) -> usize {
match self {
SigType::Rsa4096 => 512,
SigType::Rsa2048 => 256,
SigType::EllipticalCurve => 64,
}
}
}
#[derive(Debug, PartialEq, Eq, Copy, Clone)]
enum KeyType {
Rsa4096,
Rsa2048,
}
impl FromReader for KeyType {
type Args<'a> = ();
const STATIC_SIZE: usize = u32::STATIC_SIZE;
fn from_reader_args<R>(reader: &mut R, _args: Self::Args<'_>) -> io::Result<Self>
where R: Read + ?Sized {
match u32::from_reader(reader)? {
0x00000000 => Ok(KeyType::Rsa4096),
0x00000001 => Ok(KeyType::Rsa2048),
_ => Err(io::Error::new(io::ErrorKind::InvalidData, "invalid key type")),
}
}
}
impl KeyType {
fn size(self) -> usize {
match self {
KeyType::Rsa4096 => 512,
KeyType::Rsa2048 => 256,
}
}
impl WiiPartEntry {
fn offset(&self) -> u64 { (self.offset.get() as u64) << 2 }
}
#[derive(Debug, PartialEq)]
struct WiiPart {
// #[br(map = |x: u32| (x as u64) << 2)]
part_data_off: u64,
part_type: PartitionType,
// #[br(restore_position, args(part_data_off))]
part_header: WiiPartitionHeader,
pub(crate) struct WiiPartInfo {
pub(crate) group_idx: u32,
pub(crate) part_idx: u32,
pub(crate) offset: u64,
pub(crate) kind: PartitionKind,
pub(crate) header: WiiPartitionHeader,
pub(crate) junk_id: [u8; 4],
pub(crate) junk_start: u64,
}
#[derive(Debug, PartialEq)]
struct WiiPartInfo {
// #[br(seek_before = SeekFrom::Start(0x40000))]
part_count: u32,
// #[br(map = |x: u32| (x as u64) << 2)]
part_info_off: u64,
// #[br(seek_before = SeekFrom::Start(part_info_off), count = part_count)]
parts: Vec<WiiPart>,
const WII_PART_GROUP_OFF: u64 = 0x40000;
#[derive(Debug, PartialEq, FromBytes, FromZeroes, AsBytes)]
#[repr(C, align(4))]
struct WiiPartGroup {
part_count: U32,
part_entry_off: U32,
}
#[derive(Debug, PartialEq, Default)]
struct TicketTimeLimit {
enable_time_limit: u32,
time_limit: u32,
static_assert!(size_of::<WiiPartGroup>() == 8);
impl WiiPartGroup {
fn part_entry_off(&self) -> u64 { (self.part_entry_off.get() as u64) << 2 }
}
impl FromReader for TicketTimeLimit {
type Args<'a> = ();
const STATIC_SIZE: usize = struct_size([
u32::STATIC_SIZE, // enable_time_limit
u32::STATIC_SIZE, // time_limit
]);
fn from_reader_args<R>(reader: &mut R, _args: Self::Args<'_>) -> io::Result<Self>
where R: Read + ?Sized {
let enable_time_limit = u32::from_reader(reader)?;
let time_limit = u32::from_reader(reader)?;
Ok(TicketTimeLimit { enable_time_limit, time_limit })
}
#[derive(Debug, Clone, PartialEq, FromBytes, FromZeroes, AsBytes)]
#[repr(C, align(4))]
pub struct SignedHeader {
/// Signature type, always 0x00010001 (RSA-2048)
pub sig_type: U32,
/// RSA-2048 signature
pub sig: [u8; 256],
_pad: [u8; 60],
}
#[derive(Debug, PartialEq)]
struct Ticket {
sig_type: SigType,
sig: [u8; 256],
sig_issuer: [u8; 64],
ecdh: [u8; 60],
enc_key: [u8; 16],
ticket_id: [u8; 8],
console_id: [u8; 4],
title_id: [u8; 8],
ticket_version: u16,
permitted_titles_mask: u32,
permit_mask: u32,
title_export_allowed: u8,
common_key_idx: u8,
content_access_permissions: [u8; 64],
time_limits: [TicketTimeLimit; 8],
static_assert!(size_of::<SignedHeader>() == 0x140);
#[derive(Debug, Clone, PartialEq, Default, FromBytes, FromZeroes, AsBytes)]
#[repr(C, align(4))]
pub struct TicketTimeLimit {
pub enable_time_limit: U32,
pub time_limit: U32,
}
impl FromReader for Ticket {
type Args<'a> = ();
static_assert!(size_of::<TicketTimeLimit>() == 8);
const STATIC_SIZE: usize = 0x2A4;
fn from_reader_args<R>(reader: &mut R, _args: Self::Args<'_>) -> io::Result<Self>
where R: Read + ?Sized {
let sig_type = SigType::from_reader(reader)?;
let sig = <[u8; 256]>::from_reader(reader)?;
skip_bytes::<0x3C, _>(reader)?;
let sig_issuer = <[u8; 64]>::from_reader(reader)?;
let ecdh = <[u8; 60]>::from_reader(reader)?;
skip_bytes::<3, _>(reader)?;
let enc_key = <[u8; 16]>::from_reader(reader)?;
skip_bytes::<1, _>(reader)?;
let ticket_id = <[u8; 8]>::from_reader(reader)?;
let console_id = <[u8; 4]>::from_reader(reader)?;
let title_id = <[u8; 8]>::from_reader(reader)?;
skip_bytes::<2, _>(reader)?;
let ticket_version = u16::from_reader(reader)?;
let permitted_titles_mask = u32::from_reader(reader)?;
let permit_mask = u32::from_reader(reader)?;
let title_export_allowed = u8::from_reader(reader)?;
let common_key_idx = u8::from_reader(reader)?;
skip_bytes::<48, _>(reader)?;
let content_access_permissions = <[u8; 64]>::from_reader(reader)?;
let time_limits = [
TicketTimeLimit::from_reader(reader)?,
TicketTimeLimit::from_reader(reader)?,
TicketTimeLimit::from_reader(reader)?,
TicketTimeLimit::from_reader(reader)?,
TicketTimeLimit::from_reader(reader)?,
TicketTimeLimit::from_reader(reader)?,
TicketTimeLimit::from_reader(reader)?,
TicketTimeLimit::from_reader(reader)?,
];
Ok(Ticket {
sig_type,
sig,
sig_issuer,
ecdh,
enc_key,
ticket_id,
console_id,
title_id,
ticket_version,
permitted_titles_mask,
permit_mask,
title_export_allowed,
common_key_idx,
content_access_permissions,
time_limits,
})
}
#[derive(Debug, Clone, PartialEq, FromBytes, FromZeroes, AsBytes)]
#[repr(C, align(4))]
pub struct Ticket {
pub header: SignedHeader,
pub sig_issuer: [u8; 64],
pub ecdh: [u8; 60],
pub version: u8,
_pad1: U16,
pub title_key: KeyBytes,
_pad2: u8,
pub ticket_id: [u8; 8],
pub console_id: [u8; 4],
pub title_id: [u8; 8],
_pad3: U16,
pub ticket_title_version: U16,
pub permitted_titles_mask: U32,
pub permit_mask: U32,
pub title_export_allowed: u8,
pub common_key_idx: u8,
_pad4: [u8; 48],
pub content_access_permissions: [u8; 64],
_pad5: [u8; 2],
pub time_limits: [TicketTimeLimit; 8],
}
#[derive(Debug, PartialEq)]
struct TmdContent {
id: u32,
index: u16,
content_type: u16,
size: u64,
hash: [u8; 20],
static_assert!(size_of::<Ticket>() == 0x2A4);
#[derive(Debug, Clone, PartialEq, FromBytes, FromZeroes, AsBytes)]
#[repr(C, align(4))]
pub struct TmdHeader {
pub header: SignedHeader,
pub sig_issuer: [u8; 64],
pub version: u8,
pub ca_crl_version: u8,
pub signer_crl_version: u8,
pub is_vwii: u8,
pub ios_id: [u8; 8],
pub title_id: [u8; 8],
pub title_type: u32,
pub group_id: U16,
_pad1: [u8; 2],
pub region: U16,
pub ratings: KeyBytes,
_pad2: [u8; 12],
pub ipc_mask: [u8; 12],
_pad3: [u8; 18],
pub access_flags: U32,
pub title_version: U16,
pub num_contents: U16,
pub boot_idx: U16,
pub minor_version: U16,
}
#[derive(Debug, PartialEq)]
struct Tmd {
sig_type: SigType,
// #[br(count = 256)]
sig: Vec<u8>,
// #[br(pad_before = 60, count = 64)]
sig_issuer: Vec<u8>,
version: u8,
ca_crl_version: u8,
signer_crl_version: u8,
// #[br(pad_before = 1)]
ios_id_major: u32,
ios_id_minor: u32,
title_id_major: u32,
title_id_minor: [u8; 4],
title_type: u32,
group_id: u16,
// #[br(pad_before = 62)]
access_flags: u32,
title_version: u16,
num_contents: u16,
// #[br(pad_after = 2)]
boot_idx: u16,
// #[br(count = num_contents)]
contents: Vec<TmdContent>,
static_assert!(size_of::<TmdHeader>() == 0x1E4);
pub const H3_TABLE_SIZE: usize = 0x18000;
#[derive(Debug, Clone, PartialEq, FromBytes, FromZeroes, AsBytes)]
#[repr(C, align(4))]
pub struct WiiPartitionHeader {
pub ticket: Ticket,
tmd_size: U32,
tmd_off: U32,
cert_chain_size: U32,
cert_chain_off: U32,
h3_table_off: U32,
data_off: U32,
data_size: U32,
}
#[derive(Debug, PartialEq)]
struct Certificate {
sig_type: SigType,
// #[br(count = sig_size(sig_type))]
sig: Vec<u8>,
// #[br(pad_before = 60, count = 64)]
issuer: Vec<u8>,
key_type: KeyType,
// #[br(count = 64)]
subject: Vec<u8>,
// #[br(count = key_size(key_type))]
key: Vec<u8>,
modulus: u32,
// #[br(pad_after = 52)]
pub_exp: u32,
}
static_assert!(size_of::<WiiPartitionHeader>() == 0x2C0);
#[derive(Debug, PartialEq)]
// #[br(import(partition_off: u64))]
struct WiiPartitionHeader {
// #[br(seek_before = SeekFrom::Start(partition_off))]
ticket: Ticket,
tmd_size: u32,
// #[br(map = |x: u32| ((x as u64) << 2) + partition_off)]
tmd_off: u64,
cert_chain_size: u32,
// #[br(map = |x: u32| ((x as u64) << 2) + partition_off)]
cert_chain_off: u64,
// #[br(map = |x: u32| ((x as u64) << 2) + partition_off)]
global_hash_table_off: u64,
// #[br(map = |x: u32| ((x as u64) << 2) + partition_off)]
data_off: u64,
// #[br(map = |x: u32| (x as u64) << 2)]
data_size: u64,
impl WiiPartitionHeader {
pub fn tmd_size(&self) -> u64 { self.tmd_size.get() as u64 }
// #[br(seek_before = SeekFrom::Start(tmd_off))]
tmd: Tmd,
// #[br(seek_before = SeekFrom::Start(cert_chain_off))]
ca_cert: Certificate,
tmd_cert: Certificate,
ticket_cert: Certificate,
// #[br(seek_before = SeekFrom::Start(global_hash_table_off), count = 0x18000)]
h3_data: Vec<u8>,
}
pub fn tmd_off(&self) -> u64 { (self.tmd_off.get() as u64) << 2 }
impl FromReader for WiiPartitionHeader {
type Args<'a> = u64;
pub fn cert_chain_size(&self) -> u64 { self.cert_chain_size.get() as u64 }
const STATIC_SIZE: usize = Ticket::STATIC_SIZE;
pub fn cert_chain_off(&self) -> u64 { (self.cert_chain_off.get() as u64) << 2 }
fn from_reader_args<R>(reader: &mut R, args: Self::Args<'_>) -> io::Result<Self>
where R: Read + ?Sized {
todo!()
}
pub fn h3_table_off(&self) -> u64 { (self.h3_table_off.get() as u64) << 2 }
pub fn h3_table_size(&self) -> u64 { H3_TABLE_SIZE as u64 }
pub fn data_off(&self) -> u64 { (self.data_off.get() as u64) << 2 }
pub fn data_size(&self) -> u64 { (self.data_size.get() as u64) << 2 }
}
pub(crate) struct DiscWii {
header: Header,
part_info: WiiPartInfo,
header: DiscHeader,
part_info: Vec<WiiPartInfo>,
disc_size: u64,
}
impl DiscWii {
pub(crate) fn new(mut stream: &mut dyn ReadStream, header: Header) -> Result<DiscWii> {
let mut disc = DiscWii { header, part_info: todo!() }; // stream.read_be()?
disc.decrypt_partition_keys()?;
Ok(disc)
pub(crate) fn new(
stream: &mut dyn ReadStream,
header: DiscHeader,
disc_size: Option<u64>,
) -> Result<Self> {
let part_info = read_partition_info(stream)?;
// Guess disc size if not provided
let disc_size = disc_size.unwrap_or_else(|| guess_disc_size(&part_info));
Ok(Self { header, part_info, disc_size })
}
}
impl DiscWii {
pub(crate) fn decrypt_partition_keys(&mut self) -> Result<()> {
for part in self.part_info.parts.as_mut_slice() {
let ticket = &mut part.part_header.ticket;
let mut iv: [u8; 16] = [0; 16];
iv[..8].copy_from_slice(&ticket.title_id);
Aes128Cbc::new(&COMMON_KEYS[ticket.common_key_idx as usize].into(), &iv.into())
.decrypt_padded_mut::<NoPadding>(&mut ticket.enc_key)?;
pub(crate) fn read_partition_info(stream: &mut dyn ReadStream) -> Result<Vec<WiiPartInfo>> {
stream.seek(SeekFrom::Start(WII_PART_GROUP_OFF)).context("Seeking to partition groups")?;
let part_groups: [WiiPartGroup; 4] = read_from(stream).context("Reading partition groups")?;
let mut part_info = Vec::new();
for (group_idx, group) in part_groups.iter().enumerate() {
let part_count = group.part_count.get();
if part_count == 0 {
continue;
}
stream
.seek(SeekFrom::Start(group.part_entry_off()))
.with_context(|| format!("Seeking to partition group {group_idx}"))?;
let entries: Vec<WiiPartEntry> = read_vec(stream, part_count as usize)
.with_context(|| format!("Reading partition group {group_idx}"))?;
for (part_idx, entry) in entries.iter().enumerate() {
let offset = entry.offset();
stream
.seek(SeekFrom::Start(offset))
.with_context(|| format!("Seeking to partition data {group_idx}:{part_idx}"))?;
let mut header: WiiPartitionHeader = read_from(stream)
.with_context(|| format!("Reading partition header {group_idx}:{part_idx}"))?;
// Decrypt title key
let mut iv: KeyBytes = [0; 16];
iv[..8].copy_from_slice(&header.ticket.title_id);
let common_key =
COMMON_KEYS.get(header.ticket.common_key_idx as usize).ok_or(Error::DiscFormat(
format!("unknown common key index {}", header.ticket.common_key_idx),
))?;
aes_decrypt(common_key, iv, &mut header.ticket.title_key);
// Open partition stream and read junk data seed
let inner = stream
.new_window(offset + header.data_off(), header.data_size())
.context("Wrapping partition stream")?;
let mut stream = PartitionWii {
header: header.clone(),
tmd: vec![],
cert_chain: vec![],
h3_table: vec![],
stream: Box::new(inner),
key: Some(header.ticket.title_key),
offset: 0,
cur_block: 0,
buf: [0; SECTOR_SIZE],
validate_hashes: false,
};
let junk_id: [u8; 4] = read_from(&mut stream).context("Reading junk seed bytes")?;
stream
.seek(SeekFrom::Start(size_of::<DiscHeader>() as u64))
.context("Seeking to partition header")?;
let part_header: PartitionHeader =
read_from(&mut stream).context("Reading partition header")?;
let junk_start = part_header.fst_off(true) + part_header.fst_sz(true);
// log::debug!(
// "Partition: {:?} - {:?}: {:?}",
// offset + header.data_off(),
// header.data_size(),
// header.ticket.title_key
// );
part_info.push(WiiPartInfo {
group_idx: group_idx as u32,
part_idx: part_idx as u32,
offset,
kind: entry.kind.get().into(),
header,
junk_id,
junk_start,
});
}
Ok(())
}
Ok(part_info)
}
pub(crate) fn guess_disc_size(part_info: &[WiiPartInfo]) -> u64 {
let max_offset = part_info
.iter()
.flat_map(|v| {
[
v.offset + v.header.tmd_off() + v.header.tmd_size(),
v.offset + v.header.cert_chain_off() + v.header.cert_chain_size(),
v.offset + v.header.h3_table_off() + v.header.h3_table_size(),
v.offset + v.header.data_off() + v.header.data_size(),
]
})
.max()
.unwrap_or(0x50000);
if max_offset <= MINI_DVD_SIZE && !part_info.iter().any(|v| v.kind == PartitionKind::Data) {
// Datel disc
MINI_DVD_SIZE
} else if max_offset < SL_DVD_SIZE {
SL_DVD_SIZE
} else {
DL_DVD_SIZE
}
}
fn open_partition<'a>(
part: &WiiPartInfo,
disc_io: &'a dyn DiscIO,
options: &OpenOptions,
header: &DiscHeader,
) -> Result<Box<dyn PartitionBase + 'a>> {
let data_off = part.offset + part.header.data_off();
let has_crypto = header.no_partition_encryption == 0;
let mut base = disc_io.open()?;
base.seek(SeekFrom::Start(part.offset + part.header.tmd_off()))
.context("Seeking to TMD offset")?;
let tmd: Vec<u8> =
read_vec(&mut base, part.header.tmd_size() as usize).context("Reading TMD")?;
base.seek(SeekFrom::Start(part.offset + part.header.cert_chain_off()))
.context("Seeking to cert chain offset")?;
let cert_chain: Vec<u8> = read_vec(&mut base, part.header.cert_chain_size() as usize)
.context("Reading cert chain")?;
base.seek(SeekFrom::Start(part.offset + part.header.h3_table_off()))
.context("Seeking to H3 table offset")?;
let h3_table: Vec<u8> = read_vec(&mut base, H3_TABLE_SIZE).context("Reading H3 table")?;
let stream = wrap_windowed(base, data_off, part.header.data_size()).with_context(|| {
format!("Wrapping {}:{} partition stream", part.group_idx, part.part_idx)
})?;
Ok(Box::new(PartitionWii {
header: part.header.clone(),
tmd,
cert_chain,
h3_table,
stream: Box::new(stream),
key: has_crypto.then_some(part.header.ticket.title_key),
offset: 0,
cur_block: u32::MAX,
buf: [0; SECTOR_SIZE],
validate_hashes: options.validate_hashes && header.no_partition_hashes == 0,
}))
}
impl DiscBase for DiscWii {
fn get_header(&self) -> &Header { &self.header }
fn header(&self) -> &DiscHeader { &self.header }
fn get_data_partition<'a>(
&self,
disc_io: &'a mut dyn DiscIO,
validate_hashes: bool,
) -> Result<Box<dyn PartReadStream + 'a>> {
let part = self
.part_info
.parts
fn partitions(&self) -> Vec<PartitionInfo> {
self.part_info
.iter()
.find(|v| v.part_type == PartitionType::Data)
.ok_or_else(|| Error::DiscFormat("Failed to locate data partition".to_string()))?;
let data_off = part.part_header.data_off;
let has_crypto = disc_io.has_wii_crypto();
let base = disc_io
.begin_read_stream(data_off)
.map_err(|e| Error::Io("Opening data partition stream".to_string(), e))?;
let stream = wrap_windowed(base, data_off, part.part_header.data_size)
.context("Wrapping data partition stream")?;
let result = Box::new(WiiPartReadStream {
stream,
crypto: if has_crypto { Some(part.part_header.ticket.enc_key) } else { None },
offset: 0,
cur_block: u32::MAX,
buf: [0; 0x8000],
validate_hashes,
});
Ok(result)
.map(|v| PartitionInfo {
group_index: v.group_idx,
part_index: v.part_idx,
part_offset: v.offset,
kind: v.kind,
data_offset: v.header.data_off(),
data_size: v.header.data_size(),
header: Some(v.header.clone()),
lfg_seed: v.junk_id,
// junk_start: v.junk_start,
})
.collect()
}
fn get_partition<'a>(
fn open_partition<'a>(
&self,
disc_io: &'a mut dyn DiscIO,
part_type: PartitionType,
validate_hashes: bool,
) -> Result<Box<dyn PartReadStream + 'a>> {
let part =
self.part_info.parts.iter().find(|v| v.part_type == part_type).ok_or_else(|| {
Error::DiscFormat(format!("Failed to locate {:?} partition", part_type))
})?;
let data_off = part.part_header.data_off;
let has_crypto = disc_io.has_wii_crypto();
let base = disc_io
.begin_read_stream(data_off)
.with_context(|| format!("Opening {:?} partition stream", part_type))?;
let stream = wrap_windowed(base, data_off, part.part_header.data_size)
.with_context(|| format!("Wrapping {:?} partition stream", part_type))?;
let result = Box::new(WiiPartReadStream {
stream,
crypto: if has_crypto { Some(part.part_header.ticket.enc_key) } else { None },
offset: 0,
cur_block: u32::MAX,
buf: [0; 0x8000],
validate_hashes,
});
Ok(result)
disc_io: &'a dyn DiscIO,
index: usize,
options: &OpenOptions,
) -> Result<Box<dyn PartitionBase + 'a>> {
let part = self.part_info.get(index).ok_or_else(|| {
Error::DiscFormat(format!("Failed to locate partition index {}", index))
})?;
open_partition(part, disc_io, options, &self.header)
}
fn open_partition_kind<'a>(
&self,
disc_io: &'a dyn DiscIO,
part_type: PartitionKind,
options: &OpenOptions,
) -> Result<Box<dyn PartitionBase + 'a>> {
let part = self.part_info.iter().find(|&v| v.kind == part_type).ok_or_else(|| {
Error::DiscFormat(format!("Failed to locate {:?} partition", part_type))
})?;
open_partition(part, disc_io, options, &self.header)
}
fn disc_size(&self) -> u64 { self.disc_size }
}
struct WiiPartReadStream<'a> {
stream: OwningWindowedReadStream<'a>,
crypto: Option<[u8; 16]>,
struct PartitionWii<'a> {
header: WiiPartitionHeader,
tmd: Vec<u8>,
cert_chain: Vec<u8>,
h3_table: Vec<u8>,
stream: Box<dyn ReadStream + 'a>,
key: Option<KeyBytes>,
offset: u64,
cur_block: u32,
buf: [u8; SECTOR_SIZE],
validate_hashes: bool,
}
impl<'a> PartReadStream for WiiPartReadStream<'a> {
fn begin_file_stream(&mut self, node: &Node) -> io::Result<SharedWindowedReadStream> {
assert_eq!(node.kind, NodeKind::File);
self.new_window((node.offset as u64) << 2, node.length as u64)
impl<'a> PartitionBase for PartitionWii<'a> {
fn meta(&mut self) -> Result<Box<PartitionMeta>> {
self.seek(SeekFrom::Start(0)).context("Seeking to partition header")?;
let mut meta = read_part_header(self, true)?;
meta.raw_ticket = Some(self.header.ticket.as_bytes().to_vec());
meta.raw_tmd = Some(self.tmd.clone());
meta.raw_cert_chain = Some(self.cert_chain.clone());
meta.raw_h3_table = Some(self.h3_table.clone());
Ok(meta)
}
fn read_header(&mut self) -> Result<Box<dyn PartHeader>> {
self.seek(SeekFrom::Start(0)).context("Seeking to partition header")?;
todo!()
// Ok(Box::from(self.read_be::<WiiPartition>()?))
fn open_file(&mut self, node: &Node) -> io::Result<SharedWindowedReadStream> {
assert_eq!(node.kind(), NodeKind::File);
self.new_window(node.offset(true), node.length(true))
}
fn ideal_buffer_size(&self) -> usize { BLOCK_SIZE }
}
#[inline(always)]
fn as_digest(slice: &[u8; 20]) -> digest::Output<Sha1> { (*slice).into() }
pub(crate) fn as_digest(slice: &[u8; 20]) -> digest::Output<Sha1> { (*slice).into() }
fn decrypt_block(part: &mut WiiPartReadStream, cluster: u32) -> io::Result<()> {
fn decrypt_block(part: &mut PartitionWii, cluster: u32) -> io::Result<()> {
part.stream.read_exact(&mut part.buf)?;
if let Some(key) = &part.crypto {
if let Some(key) = &part.key {
// Fetch IV before decrypting header
let iv_bytes = array_ref![part.buf, 0x3d0, 16];
let iv = Block::from(*iv_bytes);
let iv = *array_ref![part.buf, 0x3d0, 16];
// Don't need to decrypt header if we're not validating hashes
if part.validate_hashes {
Aes128Cbc::new(key.into(), &Block::from([0; 16]))
.decrypt_padded_mut::<NoPadding>(&mut part.buf[..HASHES_SIZE])
.expect("Failed to decrypt header");
aes_decrypt(key, [0; 16], &mut part.buf[..HASHES_SIZE]);
}
Aes128Cbc::new(key.into(), &iv)
.decrypt_padded_mut::<NoPadding>(&mut part.buf[HASHES_SIZE..])
.expect("Failed to decrypt block");
aes_decrypt(key, iv, &mut part.buf[HASHES_SIZE..]);
}
if part.validate_hashes {
let (mut group, sub_group) = div_rem(cluster as usize, 8);
@ -449,7 +448,13 @@ fn decrypt_block(part: &mut WiiPartReadStream, cluster: u32) -> io::Result<()> {
let expected = as_digest(array_ref![part.buf, i * 20, 20]);
let output = hash.finalize();
if output != expected {
panic!("Invalid H0 hash! (block {:?}) {:x}\n\texpected {:x}", i, output, expected);
return Err(io::Error::new(
io::ErrorKind::InvalidData,
format!(
"Invalid H0 hash! (block {:?}) {:x}\n\texpected {:x}",
i, output, expected
),
));
}
}
// H1 hash
@ -459,10 +464,13 @@ fn decrypt_block(part: &mut WiiPartReadStream, cluster: u32) -> io::Result<()> {
let expected = as_digest(array_ref![part.buf, 0x280 + sub_group * 20, 20]);
let output = hash.finalize();
if output != expected {
panic!(
"Invalid H1 hash! (subgroup {:?}) {:x}\n\texpected {:x}",
sub_group, output, expected
);
return Err(io::Error::new(
io::ErrorKind::InvalidData,
format!(
"Invalid H1 hash! (subgroup {:?}) {:x}\n\texpected {:x}",
sub_group, output, expected
),
));
}
}
// H2 hash
@ -472,17 +480,20 @@ fn decrypt_block(part: &mut WiiPartReadStream, cluster: u32) -> io::Result<()> {
let expected = as_digest(array_ref![part.buf, 0x340 + group * 20, 20]);
let output = hash.finalize();
if output != expected {
panic!(
"Invalid H2 hash! (group {:?}) {:x}\n\texpected {:x}",
group, output, expected
);
return Err(io::Error::new(
io::ErrorKind::InvalidData,
format!(
"Invalid H2 hash! (group {:?}) {:x}\n\texpected {:x}",
group, output, expected
),
));
}
}
}
Ok(())
}
impl<'a> Read for WiiPartReadStream<'a> {
impl<'a> Read for PartitionWii<'a> {
fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
let (block, block_offset) = div_rem(self.offset, BLOCK_SIZE as u64);
let mut block = block as u32;
@ -521,16 +532,16 @@ fn to_block_size(v: u64) -> u64 {
(v / SECTOR_SIZE as u64) * BLOCK_SIZE as u64 + (v % SECTOR_SIZE as u64)
}
impl<'a> Seek for WiiPartReadStream<'a> {
impl<'a> Seek for PartitionWii<'a> {
fn seek(&mut self, pos: SeekFrom) -> io::Result<u64> {
self.offset = match pos {
SeekFrom::Start(v) => v,
SeekFrom::End(v) => (self.stable_stream_len()? as i64 + v) as u64,
SeekFrom::Current(v) => (self.offset as i64 + v) as u64,
SeekFrom::End(v) => self.stable_stream_len()?.saturating_add_signed(v),
SeekFrom::Current(v) => self.offset.saturating_add_signed(v),
};
let block = (self.offset / BLOCK_SIZE as u64) as u32;
if block != self.cur_block {
self.stream.seek(SeekFrom::Start(block as u64 * SECTOR_SIZE as u64))?;
let block = self.offset / BLOCK_SIZE as u64;
if block as u32 != self.cur_block {
self.stream.seek(SeekFrom::Start(block * SECTOR_SIZE as u64))?;
self.cur_block = u32::MAX;
}
Ok(self.offset)
@ -539,45 +550,10 @@ impl<'a> Seek for WiiPartReadStream<'a> {
fn stream_position(&mut self) -> io::Result<u64> { Ok(self.offset) }
}
impl<'a> ReadStream for WiiPartReadStream<'a> {
impl<'a> ReadStream for PartitionWii<'a> {
fn stable_stream_len(&mut self) -> io::Result<u64> {
Ok(to_block_size(self.stream.stable_stream_len()?))
}
fn as_dyn(&mut self) -> &mut dyn ReadStream { self }
}
#[derive(Clone, Debug, PartialEq)]
pub(crate) struct WiiPartition {
header: Header,
// #[br(seek_before = SeekFrom::Start(0x400))]
part_header: PartitionHeader,
// bi2_header: BI2Header,
// #[br(seek_before = SeekFrom::Start((part_header.fst_off as u64) << 2))]
// #[br(parse_with = node_parser)]
root_node: NodeType,
}
impl PartHeader for WiiPartition {
fn root_node(&self) -> &NodeType { &self.root_node }
fn find_node(&self, path: &str) -> Option<&NodeType> { find_node(&self.root_node, path) }
fn boot_bytes(&self) -> &[u8] { todo!() }
fn bi2_bytes(&self) -> &[u8] { todo!() }
fn apploader_bytes(&self) -> &[u8] { todo!() }
fn fst_bytes(&self) -> &[u8] { todo!() }
fn dol_bytes(&self) -> &[u8] { todo!() }
fn disc_header(&self) -> &Header { todo!() }
fn partition_header(&self) -> &PartitionHeader { todo!() }
fn apploader_header(&self) -> &AppLoaderHeader { todo!() }
fn dol_header(&self) -> &DolHeader { todo!() }
}

297
src/fst.rs
View File

@ -1,17 +1,11 @@
//! Disc file system types
use std::{
ffi::CString,
io,
io::{Read, Seek, SeekFrom},
};
use std::{borrow::Cow, ffi::CStr, mem::size_of};
use encoding_rs::SHIFT_JIS;
use zerocopy::{big_endian::*, AsBytes, FromBytes, FromZeroes};
use crate::{
util::reader::{struct_size, FromReader, DYNAMIC_SIZE, U24},
Result, ResultContext,
};
use crate::{static_assert, Result};
/// File system node kind.
#[derive(Clone, Debug, PartialEq)]
@ -20,180 +14,161 @@ pub enum NodeKind {
File,
/// Node is a directory.
Directory,
}
impl FromReader for NodeKind {
type Args<'a> = ();
const STATIC_SIZE: usize = 1;
fn from_reader_args<R>(_reader: &mut R, _args: Self::Args<'_>) -> io::Result<Self>
where R: Read + ?Sized {
match u8::from_reader(_reader)? {
0 => Ok(NodeKind::File),
1 => Ok(NodeKind::Directory),
_ => Err(io::Error::new(io::ErrorKind::InvalidData, "invalid node kind")),
}
}
/// Invalid node kind. (Should not normally occur)
Invalid,
}
/// An individual file system node.
#[derive(Clone, Debug, PartialEq)]
#[derive(Clone, Debug, PartialEq, FromBytes, FromZeroes, AsBytes)]
#[repr(C, align(4))]
pub struct Node {
kind: u8,
// u24 big-endian
name_offset: [u8; 3],
offset: U32,
length: U32,
}
static_assert!(size_of::<Node>() == 12);
impl Node {
/// File system node type.
pub kind: NodeKind,
pub fn kind(&self) -> NodeKind {
match self.kind {
0 => NodeKind::File,
1 => NodeKind::Directory,
_ => NodeKind::Invalid,
}
}
/// Whether the node is a file.
pub fn is_file(&self) -> bool { self.kind == 0 }
/// Whether the node is a directory.
pub fn is_dir(&self) -> bool { self.kind == 1 }
/// Offset in the string table to the filename.
pub name_offset: u32,
pub fn name_offset(&self) -> u32 {
u32::from_be_bytes([0, self.name_offset[0], self.name_offset[1], self.name_offset[2]])
}
/// For files, this is the partition offset of the file data. (Wii: >> 2)
///
/// For directories, this is the children start offset in the FST.
pub offset: u32,
/// For directories, this is the parent node index in the FST.
pub fn offset(&self, is_wii: bool) -> u64 {
if is_wii && self.kind == 0 {
self.offset.get() as u64 * 4
} else {
self.offset.get() as u64
}
}
/// For files, this is the byte size of the file.
/// For files, this is the byte size of the file. (Wii: >> 2)
///
/// For directories, this is the children end offset in the FST.
/// For directories, this is the child end index in the FST.
///
/// Number of child files and directories recursively is `length - offset`.
pub length: u32,
/// The node name.
pub name: String,
}
impl FromReader for Node {
type Args<'a> = ();
const STATIC_SIZE: usize = struct_size([
NodeKind::STATIC_SIZE, // type
U24::STATIC_SIZE, // name_offset
u32::STATIC_SIZE, // offset
u32::STATIC_SIZE, // length
]);
fn from_reader_args<R>(reader: &mut R, _args: Self::Args<'_>) -> io::Result<Self>
where R: Read + ?Sized {
let kind = NodeKind::from_reader(reader)?;
let name_offset = U24::from_reader(reader)?.0;
let offset = u32::from_reader(reader)?;
let length = u32::from_reader(reader)?;
Ok(Node { kind, offset, length, name_offset, name: Default::default() })
}
}
/// Contains a file system node, and if a directory, its children.
#[derive(Clone, Debug, PartialEq)]
pub enum NodeType {
/// A single file node.
File(Node),
/// A directory node with children.
Directory(Node, Vec<NodeType>),
}
impl FromReader for NodeType {
type Args<'a> = &'a mut u32;
const STATIC_SIZE: usize = DYNAMIC_SIZE;
fn from_reader_args<R>(reader: &mut R, idx: &mut u32) -> io::Result<Self>
where R: Read + ?Sized {
let node = Node::from_reader(reader)?;
*idx += 1;
Ok(if node.kind == NodeKind::Directory {
let mut children = Vec::with_capacity((node.length - *idx) as usize);
while *idx < node.length {
children.push(NodeType::from_reader_args(reader, idx)?);
}
NodeType::Directory(node, children)
pub fn length(&self, is_wii: bool) -> u64 {
if is_wii && self.kind == 0 {
self.length.get() as u64 * 4
} else {
NodeType::File(node)
})
}
}
fn read_node_name<R>(
reader: &mut R,
string_base: u64,
node: &mut NodeType,
root: bool,
) -> io::Result<()>
where
R: Read + Seek + ?Sized,
{
let mut decode_name = |v: &mut Node| -> io::Result<()> {
if !root {
let offset = string_base + v.name_offset as u64;
reader.seek(SeekFrom::Start(offset))?;
let c_string = CString::from_reader(reader)?;
let (decoded, _, errors) = SHIFT_JIS.decode(c_string.as_bytes());
if errors {
return Err(io::Error::new(io::ErrorKind::InvalidData, "invalid shift-jis"));
}
v.name = decoded.into_owned();
}
Ok(())
};
match node {
NodeType::File(inner) => {
decode_name(inner)?;
}
NodeType::Directory(inner, children) => {
decode_name(inner)?;
for child in children {
read_node_name(reader, string_base, child, false)?;
}
}
}
Ok(())
}
pub(crate) fn read_fst<R>(reader: &mut R) -> Result<NodeType>
where R: Read + Seek + ?Sized {
let mut node = NodeType::from_reader_args(reader, &mut 0).context("Parsing FST nodes")?;
let string_base = reader.stream_position().context("Reading FST end position")?;
read_node_name(reader, string_base, &mut node, true).context("Reading FST node names")?;
Ok(node)
}
fn matches_name(node: &NodeType, name: &str) -> bool {
match node {
NodeType::File(v) => v.name.as_str().eq_ignore_ascii_case(name),
NodeType::Directory(v, _) => {
v.name.is_empty() /* root */ || v.name.as_str().eq_ignore_ascii_case(name)
self.length.get() as u64
}
}
}
pub(crate) fn find_node<'a>(mut node: &'a NodeType, path: &str) -> Option<&'a NodeType> {
let mut split = path.split('/');
let mut current = split.next();
while current.is_some() {
if matches_name(node, current.unwrap()) {
match node {
NodeType::File(_) => {
return if split.next().is_none() { Some(node) } else { None };
/// A view into the file system tree (FST).
pub struct Fst<'a> {
pub nodes: &'a [Node],
pub string_table: &'a [u8],
}
impl<'a> Fst<'a> {
/// Create a new FST view from a buffer.
pub fn new(buf: &'a [u8]) -> Result<Self, &'static str> {
let Some(root_node) = Node::ref_from_prefix(buf) else {
return Err("FST root node not found");
};
// String table starts after the last node
let string_base = root_node.length(false) * size_of::<Node>() as u64;
if string_base >= buf.len() as u64 {
return Err("FST string table out of bounds");
}
let (node_buf, string_table) = buf.split_at(string_base as usize);
let nodes = Node::slice_from(node_buf).unwrap();
Ok(Self { nodes, string_table })
}
/// Iterate over the nodes in the FST.
pub fn iter(&self) -> FstIter { FstIter { fst: self, idx: 1 } }
/// Get the name of a node.
pub fn get_name(&self, node: &Node) -> Result<Cow<str>, String> {
let name_buf = self.string_table.get(node.name_offset() as usize..).ok_or_else(|| {
format!(
"FST: name offset {} out of bounds (string table size: {})",
node.name_offset(),
self.string_table.len()
)
})?;
let c_string = CStr::from_bytes_until_nul(name_buf).map_err(|_| {
format!("FST: name at offset {} not null-terminated", node.name_offset())
})?;
let (decoded, _, errors) = SHIFT_JIS.decode(c_string.to_bytes());
if errors {
return Err(format!("FST: Failed to decode name at offset {}", node.name_offset()));
}
Ok(decoded)
}
/// Finds a particular file or directory by path.
pub fn find(&self, path: &str) -> Option<(usize, &Node)> {
let mut split = path.trim_matches('/').split('/');
let mut current = split.next()?;
let mut idx = 1;
let mut stop_at = None;
while let Some(node) = self.nodes.get(idx) {
if self.get_name(node).as_ref().map_or(false, |name| name.eq_ignore_ascii_case(current))
{
if let Some(next) = split.next() {
current = next;
} else {
return Some((idx, node));
}
NodeType::Directory(v, c) => {
// Find child
if !v.name.is_empty() || current.unwrap().is_empty() {
current = split.next();
}
if current.is_none() || current.unwrap().is_empty() {
return if split.next().is_none() { Some(node) } else { None };
}
for x in c {
if matches_name(x, current.unwrap()) {
node = x;
break;
}
}
// Descend into directory
idx += 1;
stop_at = Some(node.length(false) as usize + idx);
} else if node.is_dir() {
// Skip directory
idx = node.length(false) as usize;
} else {
// Skip file
idx += 1;
}
if let Some(stop) = stop_at {
if idx >= stop {
break;
}
}
} else {
break;
}
None
}
}
/// Iterator over the nodes in an FST.
pub struct FstIter<'a> {
fst: &'a Fst<'a>,
idx: usize,
}
impl<'a> Iterator for FstIter<'a> {
type Item = (usize, &'a Node, Result<Cow<'a, str>, String>);
fn next(&mut self) -> Option<Self::Item> {
let idx = self.idx;
let node = self.fst.nodes.get(idx)?;
let name = self.fst.get_name(node);
self.idx += 1;
Some((idx, node, name))
}
None
}

267
src/io/ciso.rs Normal file
View File

@ -0,0 +1,267 @@
use std::{
cmp::min,
io,
io::{BufReader, Read, Seek, SeekFrom},
mem::size_of,
path::Path,
};
use zerocopy::{little_endian::*, AsBytes, FromBytes, FromZeroes};
use crate::{
disc::{gcn::DiscGCN, wii::DiscWii, DiscBase, DL_DVD_SIZE, SECTOR_SIZE},
io::{nkit::NKitHeader, split::SplitFileReader, DiscIO, MagicBytes},
static_assert,
util::{
lfg::LaggedFibonacci,
reader::{read_box_slice, read_from},
},
DiscHeader, DiscMeta, Error, PartitionInfo, ReadStream, Result, ResultContext,
};
pub const CISO_MAGIC: MagicBytes = *b"CISO";
pub const CISO_MAP_SIZE: usize = SECTOR_SIZE - 8;
#[derive(Clone, Debug, PartialEq, FromBytes, FromZeroes, AsBytes)]
#[repr(C, align(4))]
struct CISOHeader {
magic: MagicBytes,
// little endian
block_size: U32,
block_present: [u8; CISO_MAP_SIZE],
}
static_assert!(size_of::<CISOHeader>() == SECTOR_SIZE);
pub struct DiscIOCISO {
inner: SplitFileReader,
header: CISOHeader,
block_map: [u16; CISO_MAP_SIZE],
nkit_header: Option<NKitHeader>,
junk_blocks: Option<Box<[u8]>>,
partitions: Vec<PartitionInfo>,
disc_num: u8,
}
impl DiscIOCISO {
pub fn new(filename: &Path) -> Result<Self> {
let mut inner = BufReader::new(SplitFileReader::new(filename)?);
// Read header
let header: CISOHeader = read_from(&mut inner).context("Reading CISO header")?;
if header.magic != CISO_MAGIC {
return Err(Error::DiscFormat("Invalid CISO magic".to_string()));
}
// Build block map
let mut block_map = [0u16; CISO_MAP_SIZE];
let mut block = 0u16;
for (presence, out) in header.block_present.iter().zip(block_map.iter_mut()) {
if *presence == 1 {
*out = block;
block += 1;
} else {
*out = u16::MAX;
}
}
let file_size = SECTOR_SIZE as u64 + block as u64 * header.block_size.get() as u64;
if file_size > inner.get_ref().len() {
return Err(Error::DiscFormat(format!(
"CISO file size mismatch: expected at least {} bytes, got {}",
file_size,
inner.get_ref().len()
)));
}
// Read NKit header if present (after CISO data)
let nkit_header = if inner.get_ref().len() > file_size + 4 {
inner.seek(SeekFrom::Start(file_size)).context("Seeking to NKit header")?;
NKitHeader::try_read_from(&mut inner)
} else {
None
};
// Read junk data bitstream if present (after NKit header)
let junk_blocks = if nkit_header.is_some() {
let n = 1 + DL_DVD_SIZE / header.block_size.get() as u64 / 8;
Some(read_box_slice(&mut inner, n as usize).context("Reading NKit bitstream")?)
} else {
None
};
let (partitions, disc_num) = if junk_blocks.is_some() {
let mut stream: Box<dyn ReadStream> = Box::new(CISOReadStream {
inner: BufReader::new(inner.get_ref().clone()),
block_size: header.block_size.get(),
block_map,
cur_block: u16::MAX,
pos: 0,
junk_blocks: None,
partitions: vec![],
disc_num: 0,
});
let header: DiscHeader = read_from(stream.as_mut()).context("Reading disc header")?;
let disc_num = header.disc_num;
let disc_base: Box<dyn DiscBase> = if header.is_wii() {
Box::new(DiscWii::new(stream.as_mut(), header, None)?)
} else if header.is_gamecube() {
Box::new(DiscGCN::new(stream.as_mut(), header, None)?)
} else {
return Err(Error::DiscFormat(format!(
"Invalid GC/Wii magic: {:#010X}/{:#010X}",
header.gcn_magic.get(),
header.wii_magic.get()
)));
};
(disc_base.partitions(), disc_num)
} else {
(vec![], 0)
};
// Reset reader
let mut inner = inner.into_inner();
inner.reset();
Ok(Self { inner, header, block_map, nkit_header, junk_blocks, partitions, disc_num })
}
}
impl DiscIO for DiscIOCISO {
fn open(&self) -> Result<Box<dyn ReadStream>> {
Ok(Box::new(CISOReadStream {
inner: BufReader::new(self.inner.clone()),
block_size: self.header.block_size.get(),
block_map: self.block_map,
cur_block: u16::MAX,
pos: 0,
junk_blocks: self.junk_blocks.clone(),
partitions: self.partitions.clone(),
disc_num: self.disc_num,
}))
}
fn meta(&self) -> Result<DiscMeta> {
Ok(self.nkit_header.as_ref().map(DiscMeta::from).unwrap_or_default())
}
fn disc_size(&self) -> Option<u64> { self.nkit_header.as_ref().and_then(|h| h.size) }
}
struct CISOReadStream {
inner: BufReader<SplitFileReader>,
block_size: u32,
block_map: [u16; CISO_MAP_SIZE],
cur_block: u16,
pos: u64,
// Data for recreating junk data
junk_blocks: Option<Box<[u8]>>,
partitions: Vec<PartitionInfo>,
disc_num: u8,
}
impl CISOReadStream {
fn read_junk_data(&mut self, buf: &mut [u8]) -> io::Result<usize> {
let Some(junk_blocks) = self.junk_blocks.as_deref() else {
return Ok(0);
};
let block_size = self.block_size as u64;
let block = (self.pos / block_size) as u16;
if junk_blocks[(block / 8) as usize] & (1 << (7 - (block & 7))) == 0 {
return Ok(0);
}
let Some(partition) = self.partitions.iter().find(|p| {
let start = p.part_offset + p.data_offset;
start <= self.pos && self.pos < start + p.data_size
}) else {
log::warn!("No partition found for junk data at offset {:#x}", self.pos);
return Ok(0);
};
let offset = self.pos - (partition.part_offset + partition.data_offset);
let to_read = min(
buf.len(),
// The LFG is only valid for a single sector
SECTOR_SIZE - (offset % SECTOR_SIZE as u64) as usize,
);
let mut lfg = LaggedFibonacci::default();
lfg.init_with_seed(partition.lfg_seed, self.disc_num, offset);
lfg.fill(&mut buf[..to_read]);
self.pos += to_read as u64;
Ok(to_read)
}
}
impl Read for CISOReadStream {
fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
let block_size = self.block_size as u64;
let block = (self.pos / block_size) as u16;
let block_offset = self.pos & (block_size - 1);
if block != self.cur_block {
if block >= CISO_MAP_SIZE as u16 {
return Ok(0);
}
// Find the block in the map
let phys_block = self.block_map[block as usize];
if phys_block == u16::MAX {
// Try to recreate junk data
let read = self.read_junk_data(buf)?;
if read > 0 {
return Ok(read);
}
// Otherwise, read zeroes
let to_read = min(buf.len(), (block_size - block_offset) as usize);
buf[..to_read].fill(0);
self.pos += to_read as u64;
return Ok(to_read);
}
// Seek to the new block
let file_offset =
size_of::<CISOHeader>() as u64 + phys_block as u64 * block_size + block_offset;
self.inner.seek(SeekFrom::Start(file_offset))?;
self.cur_block = block;
}
let to_read = min(buf.len(), (block_size - block_offset) as usize);
let read = self.inner.read(&mut buf[..to_read])?;
self.pos += read as u64;
Ok(read)
}
}
impl Seek for CISOReadStream {
fn seek(&mut self, pos: SeekFrom) -> io::Result<u64> {
let new_pos = match pos {
SeekFrom::Start(v) => v,
SeekFrom::End(_) => {
return Err(io::Error::new(
io::ErrorKind::Unsupported,
"CISOReadStream: SeekFrom::End is not supported",
));
}
SeekFrom::Current(v) => self.pos.saturating_add_signed(v),
};
let block_size = self.block_size as u64;
let new_block = (self.pos / block_size) as u16;
if new_block == self.cur_block {
// Seek within the same block
self.inner.seek(SeekFrom::Current(new_pos as i64 - self.pos as i64))?;
} else {
// Seek to a different block, handled by next read
self.cur_block = u16::MAX;
}
self.pos = new_pos;
Ok(new_pos)
}
}
impl ReadStream for CISOReadStream {
fn stable_stream_len(&mut self) -> io::Result<u64> {
Ok(self.block_size as u64 * CISO_MAP_SIZE as u64)
}
fn as_dyn(&mut self) -> &mut dyn ReadStream { self }
}

50
src/io/iso.rs
View File

@ -1,49 +1,25 @@
use std::{
fs::File,
io,
io::{Seek, SeekFrom},
path::{Path, PathBuf},
use std::{io::BufReader, path::Path};
use crate::{
io::{split::SplitFileReader, DiscIO},
streams::ReadStream,
Result,
};
use crate::{io::DiscIO, streams::ReadStream, Result};
pub(crate) struct DiscIOISO {
pub(crate) filename: PathBuf,
pub struct DiscIOISO {
pub inner: SplitFileReader,
}
impl DiscIOISO {
pub(crate) fn new(filename: &Path) -> Result<DiscIOISO> {
Ok(DiscIOISO { filename: filename.to_owned() })
pub fn new(filename: &Path) -> Result<Self> {
Ok(Self { inner: SplitFileReader::new(filename)? })
}
}
impl DiscIO for DiscIOISO {
fn begin_read_stream(&mut self, offset: u64) -> io::Result<Box<dyn ReadStream>> {
let mut file = File::open(&*self.filename)?;
file.seek(SeekFrom::Start(offset))?;
Ok(Box::from(file))
fn open(&self) -> Result<Box<dyn ReadStream>> {
Ok(Box::new(BufReader::new(self.inner.clone())))
}
}
pub(crate) struct DiscIOISOStream<T>
where T: ReadStream + Sized
{
pub(crate) stream: T,
}
impl<T> DiscIOISOStream<T>
where T: ReadStream + Sized
{
pub(crate) fn new(stream: T) -> Result<DiscIOISOStream<T>> { Ok(DiscIOISOStream { stream }) }
}
impl<T> DiscIO for DiscIOISOStream<T>
where T: ReadStream + Sized + Send + Sync
{
fn begin_read_stream<'a>(&'a mut self, offset: u64) -> io::Result<Box<dyn ReadStream + 'a>> {
let size = self.stream.stable_stream_len()?;
let mut stream = self.stream.new_window(0, size)?;
stream.seek(SeekFrom::Start(offset))?;
Ok(Box::from(stream))
}
fn disc_size(&self) -> Option<u64> { Some(self.inner.len()) }
}

144
src/io/mod.rs
View File

@ -1,52 +1,52 @@
//! Disc file format related logic (ISO, NFS, etc)
//! Disc file format related logic (CISO, NFS, WBFS, WIA, etc.)
use std::{fs, io, path::Path};
use std::{fs, fs::File, path::Path};
use crate::{
io::{
iso::{DiscIOISO, DiscIOISOStream},
nfs::DiscIONFS,
wia::DiscIOWIA,
},
streams::{ByteReadStream, ReadStream},
Error, Result,
streams::ReadStream, util::reader::read_from, Error, OpenOptions, Result, ResultContext,
};
pub(crate) mod ciso;
pub(crate) mod iso;
pub(crate) mod nfs;
pub(crate) mod nkit;
pub(crate) mod split;
pub(crate) mod wbfs;
pub(crate) mod wia;
#[derive(Default, Debug, Clone)]
pub struct DiscIOOptions {
/// Rebuild hashes for the disc image.
pub rebuild_hashes: bool,
}
/// SHA-1 hash bytes
pub(crate) type HashBytes = [u8; 20];
/// Abstraction over supported disc file types.
/// AES key bytes
pub(crate) type KeyBytes = [u8; 16];
/// Magic bytes
pub(crate) type MagicBytes = [u8; 4];
/// Abstraction over supported disc file formats.
pub trait DiscIO: Send + Sync {
/// Opens a new read stream for the disc file(s).
/// Generally does _not_ need to be used directly.
fn begin_read_stream(&mut self, offset: u64) -> io::Result<Box<dyn ReadStream + '_>>;
fn open(&self) -> Result<Box<dyn ReadStream + '_>>;
/// If false, the file format does not use standard Wii partition encryption. (e.g. NFS)
fn has_wii_crypto(&self) -> bool { true }
/// Returns extra metadata included in the disc file format, if any.
fn meta(&self) -> Result<DiscMeta> { Ok(DiscMeta::default()) }
/// If None, the file format does not store the original disc size. (e.g. WBFS, NFS)
fn disc_size(&self) -> Option<u64>;
}
/// Extra metadata included in some disc file formats.
#[derive(Debug, Clone, Default)]
pub struct DiscMeta {
pub crc32: Option<u32>,
pub md5: Option<[u8; 16]>,
pub sha1: Option<[u8; 20]>,
pub xxhash64: Option<u64>,
}
/// Creates a new [`DiscIO`] instance.
///
/// # Examples
///
/// Basic usage:
/// ```no_run
/// use nod::io::{new_disc_io, DiscIOOptions};
///
/// # fn main() -> nod::Result<()> {
/// let options = DiscIOOptions::default();
/// let mut disc_io = new_disc_io("path/to/file.iso".as_ref(), &options)?;
/// # Ok(())
/// # }
/// ```
pub fn new_disc_io(filename: &Path, options: &DiscIOOptions) -> Result<Box<dyn DiscIO>> {
pub fn open(filename: &Path, options: &OpenOptions) -> Result<Box<dyn DiscIO>> {
let path_result = fs::canonicalize(filename);
if let Err(err) = path_result {
return Err(Error::Io(format!("Failed to open {}", filename.display()), err));
@ -59,66 +59,38 @@ pub fn new_disc_io(filename: &Path, options: &DiscIOOptions) -> Result<Box<dyn D
if !meta.unwrap().is_file() {
return Err(Error::DiscFormat(format!("Input is not a file: {}", filename.display())));
}
if has_extension(path, "iso") {
Ok(Box::from(DiscIOISO::new(path)?))
} else if has_extension(path, "nfs") {
match path.parent() {
let magic: MagicBytes = {
let mut file =
File::open(path).with_context(|| format!("Opening file {}", filename.display()))?;
read_from(&mut file)
.with_context(|| format!("Reading magic bytes from {}", filename.display()))?
};
match magic {
ciso::CISO_MAGIC => Ok(Box::new(ciso::DiscIOCISO::new(path)?)),
nfs::NFS_MAGIC => match path.parent() {
Some(parent) if parent.is_dir() => {
Ok(Box::from(DiscIONFS::new(path.parent().unwrap())?))
Ok(Box::new(nfs::DiscIONFS::new(path.parent().unwrap(), options)?))
}
_ => Err(Error::DiscFormat("Failed to locate NFS parent directory".to_string())),
}
} else if has_extension(path, "wia") || has_extension(path, "rvz") {
Ok(Box::from(DiscIOWIA::new(path, options)?))
} else {
Err(Error::DiscFormat("Unknown file type".to_string()))
},
wbfs::WBFS_MAGIC => Ok(Box::new(wbfs::DiscIOWBFS::new(path)?)),
wia::WIA_MAGIC | wia::RVZ_MAGIC => Ok(Box::new(wia::DiscIOWIA::new(path, options)?)),
_ => Ok(Box::new(iso::DiscIOISO::new(path)?)),
}
}
/// Creates a new [`DiscIO`] instance from a byte slice.
///
/// # Examples
///
/// Basic usage:
/// ```no_run
/// use nod::io::new_disc_io_from_buf;
///
/// # fn main() -> nod::Result<()> {
/// # #[allow(non_upper_case_globals)] const buf: &[u8] = &[0u8; 0];
/// let mut disc_io = new_disc_io_from_buf(buf)?;
/// # Ok(())
/// # }
/// ```
pub fn new_disc_io_from_buf(buf: &[u8]) -> Result<Box<dyn DiscIO + '_>> {
new_disc_io_from_stream(ByteReadStream { bytes: buf, position: 0 })
/// Encrypts data in-place using AES-128-CBC with the given key and IV.
pub(crate) fn aes_encrypt(key: &KeyBytes, iv: KeyBytes, data: &mut [u8]) {
use aes::cipher::{block_padding::NoPadding, BlockEncryptMut, KeyIvInit};
<cbc::Encryptor<aes::Aes128>>::new(key.into(), &aes::Block::from(iv))
.encrypt_padded_mut::<NoPadding>(data, data.len())
.unwrap(); // Safe: using NoPadding
}
/// Creates a new [`DiscIO`] instance from an existing [`ReadStream`].
///
/// # Examples
///
/// Basic usage:
/// ```no_run
/// use nod::{io::new_disc_io_from_stream, streams::ByteReadStream};
///
/// # fn main() -> nod::Result<()> {
/// # #[allow(non_upper_case_globals)] const buf: &[u8] = &[0u8; 0];
/// let stream = ByteReadStream { bytes: buf, position: 0 };
/// let mut disc_io = new_disc_io_from_stream(stream)?;
/// # Ok(())
/// # }
/// ```
pub fn new_disc_io_from_stream<'a, T: 'a + ReadStream + Sized + Send + Sync>(
stream: T,
) -> Result<Box<dyn DiscIO + 'a>> {
Ok(Box::from(DiscIOISOStream::new(stream)?))
}
/// Helper function for checking a file extension.
#[inline(always)]
pub fn has_extension(filename: &Path, extension: &str) -> bool {
match filename.extension() {
Some(ext) => ext.eq_ignore_ascii_case(extension),
None => false,
}
/// Decrypts data in-place using AES-128-CBC with the given key and IV.
pub(crate) fn aes_decrypt(key: &KeyBytes, iv: KeyBytes, data: &mut [u8]) {
use aes::cipher::{block_padding::NoPadding, BlockDecryptMut, KeyIvInit};
<cbc::Decryptor<aes::Aes128>>::new(key.into(), &aes::Block::from(iv))
.decrypt_padded_mut::<NoPadding>(data)
.unwrap(); // Safe: using NoPadding
}

524
src/io/nfs.rs
View File

@ -2,342 +2,306 @@ use std::{
fs::File,
io,
io::{BufReader, Read, Seek, SeekFrom},
mem::size_of,
path::{Component, Path, PathBuf},
};
use aes::{
cipher::{block_padding::NoPadding, BlockDecryptMut, KeyIvInit},
Aes128,
};
use zerocopy::{big_endian::U32, AsBytes, FromBytes, FromZeroes};
use crate::{
disc::SECTOR_SIZE,
io::DiscIO,
array_ref,
disc::{
wii::{read_partition_info, HASHES_SIZE},
SECTOR_SIZE,
},
io::{aes_decrypt, aes_encrypt, split::SplitFileReader, DiscIO, KeyBytes, MagicBytes},
static_assert,
streams::ReadStream,
util::reader::{read_vec, struct_size, FromReader},
Error, Result, ResultContext,
util::reader::read_from,
DiscHeader, Error, OpenOptions, Result, ResultContext,
};
type Aes128Cbc = cbc::Decryptor<Aes128>;
pub const NFS_MAGIC: MagicBytes = *b"EGGS";
pub const NFS_END_MAGIC: MagicBytes = *b"SGGE";
#[derive(Clone, Debug, PartialEq)]
pub(crate) struct LBARange {
pub(crate) start_block: u32,
pub(crate) num_blocks: u32,
#[derive(Clone, Debug, PartialEq, FromBytes, FromZeroes, AsBytes)]
#[repr(C, align(4))]
pub struct LBARange {
pub start_sector: U32,
pub num_sectors: U32,
}
impl FromReader for LBARange {
type Args<'a> = ();
const STATIC_SIZE: usize = struct_size([
u32::STATIC_SIZE, // start_block
u32::STATIC_SIZE, // num_blocks
]);
fn from_reader_args<R>(reader: &mut R, _args: Self::Args<'_>) -> io::Result<Self>
where R: Read + ?Sized {
Ok(LBARange {
start_block: u32::from_reader(reader)?,
num_blocks: u32::from_reader(reader)?,
})
}
#[derive(Clone, Debug, PartialEq, FromBytes, FromZeroes, AsBytes)]
#[repr(C, align(4))]
pub struct NFSHeader {
pub magic: MagicBytes,
pub version: U32,
pub unk1: U32,
pub unk2: U32,
pub num_lba_ranges: U32,
pub lba_ranges: [LBARange; 61],
pub end_magic: MagicBytes,
}
type MagicBytes = [u8; 4];
#[derive(Clone, Debug, PartialEq)]
pub(crate) struct NFSHeader {
pub(crate) version: u32,
pub(crate) unk1: u32,
pub(crate) unk2: u32,
pub(crate) lba_ranges: Vec<LBARange>,
}
impl FromReader for NFSHeader {
type Args<'a> = ();
const STATIC_SIZE: usize = struct_size([
MagicBytes::STATIC_SIZE, // magic
u32::STATIC_SIZE, // version
u32::STATIC_SIZE, // unk1
u32::STATIC_SIZE, // unk2
u32::STATIC_SIZE, // lba_range_count
LBARange::STATIC_SIZE * 61, // lba_ranges
MagicBytes::STATIC_SIZE, // end_magic
]);
fn from_reader_args<R>(reader: &mut R, _args: Self::Args<'_>) -> io::Result<Self>
where R: Read + ?Sized {
if MagicBytes::from_reader(reader)? != *b"EGGS" {
return Err(io::Error::new(io::ErrorKind::InvalidData, "Invalid NFS magic"));
}
let version = u32::from_reader(reader)?;
let unk1 = u32::from_reader(reader)?;
let unk2 = u32::from_reader(reader)?;
let lba_range_count = u32::from_reader(reader)?;
let mut lba_ranges = read_vec(reader, 61)?;
lba_ranges.truncate(lba_range_count as usize);
if MagicBytes::from_reader(reader)? != *b"SGGE" {
return Err(io::Error::new(io::ErrorKind::InvalidData, "Invalid NFS end magic"));
}
Ok(NFSHeader { version, unk1, unk2, lba_ranges })
}
}
#[derive(Clone, Copy, Debug, PartialEq)]
pub(crate) struct Fbo {
pub(crate) file: u32,
pub(crate) block: u32,
pub(crate) l_block: u32,
pub(crate) offset: u32,
}
impl Default for Fbo {
fn default() -> Self {
Fbo { file: u32::MAX, block: u32::MAX, l_block: u32::MAX, offset: u32::MAX }
}
}
static_assert!(size_of::<NFSHeader>() == 0x200);
impl NFSHeader {
pub(crate) fn calculate_num_files(&self) -> u32 {
let total_block_count =
self.lba_ranges.iter().fold(0u32, |acc, range| acc + range.num_blocks);
(((total_block_count as u64) * 0x8000u64 + (0x200u64 + 0xF9FFFFFu64)) / 0xFA00000u64) as u32
pub fn validate(&self) -> Result<()> {
if self.magic != NFS_MAGIC {
return Err(Error::DiscFormat("Invalid NFS magic".to_string()));
}
if self.num_lba_ranges.get() > 61 {
return Err(Error::DiscFormat("Invalid NFS LBA range count".to_string()));
}
if self.end_magic != NFS_END_MAGIC {
return Err(Error::DiscFormat("Invalid NFS end magic".to_string()));
}
Ok(())
}
pub(crate) fn logical_to_fbo(&self, offset: u64) -> Fbo {
let block_div = (offset / 0x8000) as u32;
let block_off = (offset % 0x8000) as u32;
let mut block = u32::MAX;
let mut physical_block = 0u32;
for range in self.lba_ranges.iter() {
if block_div >= range.start_block && block_div - range.start_block < range.num_blocks {
block = physical_block + (block_div - range.start_block);
break;
pub fn lba_ranges(&self) -> &[LBARange] {
&self.lba_ranges[..self.num_lba_ranges.get() as usize]
}
pub fn calculate_num_files(&self) -> u32 {
let sector_count =
self.lba_ranges().iter().fold(0u32, |acc, range| acc + range.num_sectors.get());
(((sector_count as u64) * (SECTOR_SIZE as u64)
+ (size_of::<NFSHeader>() as u64 + 0xF9FFFFFu64))
/ 0xFA00000u64) as u32
}
pub fn phys_sector(&self, sector: u32) -> u32 {
let mut cur_sector = 0u32;
for range in self.lba_ranges().iter() {
if sector >= range.start_sector.get()
&& sector - range.start_sector.get() < range.num_sectors.get()
{
return cur_sector + (sector - range.start_sector.get());
}
physical_block += range.num_blocks;
}
if block == u32::MAX {
Fbo::default()
} else {
Fbo { file: block / 8000, block: block % 8000, l_block: block_div, offset: block_off }
cur_sector += range.num_sectors.get();
}
u32::MAX
}
}
pub(crate) struct DiscIONFS {
pub(crate) directory: PathBuf,
pub(crate) key: [u8; 16],
pub(crate) header: Option<NFSHeader>,
pub struct DiscIONFS {
pub inner: SplitFileReader,
pub header: NFSHeader,
pub raw_size: u64,
pub disc_size: u64,
pub key: KeyBytes,
pub encrypt: bool,
}
impl DiscIONFS {
pub(crate) fn new(directory: &Path) -> Result<DiscIONFS> {
let mut disc_io = DiscIONFS { directory: directory.to_owned(), key: [0; 16], header: None };
disc_io.validate_files()?;
pub fn new(directory: &Path, options: &OpenOptions) -> Result<DiscIONFS> {
let mut disc_io = DiscIONFS {
inner: SplitFileReader::empty(),
header: NFSHeader::new_zeroed(),
raw_size: 0,
disc_size: 0,
key: [0; 16],
encrypt: options.rebuild_encryption,
};
disc_io.load_files(directory)?;
Ok(disc_io)
}
}
pub(crate) struct NFSReadStream<'a> {
disc_io: &'a DiscIONFS,
file: Option<File>,
crypto: [u8; 16],
// Physical address - all UINT32_MAX indicates logical zero block
phys_addr: Fbo,
// Logical address
offset: u64,
// Active file stream and its offset as set in the system.
// Block is typically one ahead of the presently decrypted block.
cur_file: u32,
cur_block: u32,
pub struct NFSReadStream {
/// Underlying file reader
inner: SplitFileReader,
/// NFS file header
header: NFSHeader,
/// Inner disc header
disc_header: Option<DiscHeader>,
/// Estimated disc size
disc_size: u64,
/// Current offset
pos: u64,
/// Current sector
sector: u32,
/// Current decrypted sector
buf: [u8; SECTOR_SIZE],
/// AES key
key: KeyBytes,
/// Wii partition info
part_info: Vec<PartitionInfo>,
}
impl<'a> NFSReadStream<'a> {
fn set_cur_file(&mut self, cur_file: u32) -> Result<()> {
if cur_file >= self.disc_io.header.as_ref().unwrap().calculate_num_files() {
return Err(Error::DiscFormat(format!("Out of bounds NFS file access: {}", cur_file)));
}
self.cur_file = cur_file;
self.cur_block = u32::MAX;
let path = self.disc_io.get_nfs(cur_file)?;
self.file = Option::from(
File::open(&path).with_context(|| format!("Opening file {}", path.display()))?,
);
Ok(())
}
struct PartitionInfo {
start_sector: u32,
end_sector: u32,
key: KeyBytes,
}
fn set_cur_block(&mut self, cur_block: u32) -> io::Result<()> {
self.cur_block = cur_block;
self.file
.as_ref()
.unwrap()
.seek(SeekFrom::Start(self.cur_block as u64 * SECTOR_SIZE as u64 + 0x200u64))?;
Ok(())
}
fn set_phys_addr(&mut self, phys_addr: Fbo) -> Result<()> {
// If we're just changing the offset, nothing else needs to be done
if self.phys_addr.file == phys_addr.file && self.phys_addr.block == phys_addr.block {
self.phys_addr.offset = phys_addr.offset;
return Ok(());
}
self.phys_addr = phys_addr;
// Set logical zero block
if phys_addr.file == u32::MAX {
impl NFSReadStream {
fn read_sector(&mut self, sector: u32) -> io::Result<()> {
// Calculate physical sector
let phys_sector = self.header.phys_sector(sector);
if phys_sector == u32::MAX {
// Logical zero sector
self.buf.fill(0u8);
return Ok(());
}
// Make necessary file and block current with system
if phys_addr.file != self.cur_file {
self.set_cur_file(phys_addr.file)?;
}
if phys_addr.block != self.cur_block {
self.set_cur_block(phys_addr.block)
.with_context(|| format!("Seeking to NFS block {}", phys_addr.block))?;
}
// Read block, handling 0x200 overlap case
if phys_addr.block == 7999 {
self.file
.as_ref()
.unwrap()
.read_exact(&mut self.buf[..SECTOR_SIZE - 0x200])
.context("Reading NFS block 7999 part 1")?;
self.set_cur_file(self.cur_file + 1)?;
self.file
.as_ref()
.unwrap()
.read_exact(&mut self.buf[SECTOR_SIZE - 0x200..])
.context("Reading NFS block 7999 part 2")?;
self.cur_block = 0;
} else {
self.file
.as_ref()
.unwrap()
.read_exact(&mut self.buf)
.with_context(|| format!("Reading NFS block {}", phys_addr.block))?;
self.cur_block += 1;
}
// Read sector
let offset = size_of::<NFSHeader>() as u64 + phys_sector as u64 * SECTOR_SIZE as u64;
self.inner.seek(SeekFrom::Start(offset))?;
self.inner.read_exact(&mut self.buf)?;
// Decrypt
let iv_bytes = sector.to_be_bytes();
#[rustfmt::skip]
let iv: [u8; 16] = [
let iv: KeyBytes = [
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
(phys_addr.l_block & 0xFF) as u8,
((phys_addr.l_block >> 8) & 0xFF) as u8,
((phys_addr.l_block >> 16) & 0xFF) as u8,
((phys_addr.l_block >> 24) & 0xFF) as u8,
iv_bytes[0], iv_bytes[1], iv_bytes[2], iv_bytes[3],
];
Aes128Cbc::new(self.crypto.as_ref().into(), &iv.into())
.decrypt_padded_mut::<NoPadding>(&mut self.buf)?;
aes_decrypt(&self.key, iv, &mut self.buf);
if sector == 0 {
if let Some(header) = &self.disc_header {
// Replace disc header in buffer
let header_bytes = header.as_bytes();
self.buf[..header_bytes.len()].copy_from_slice(header_bytes);
}
}
// Re-encrypt if needed
if let Some(part) = self
.part_info
.iter()
.find(|part| sector >= part.start_sector && sector < part.end_sector)
{
// Encrypt hashes
aes_encrypt(&part.key, [0u8; 16], &mut self.buf[..HASHES_SIZE]);
// Encrypt data using IV from H2
aes_encrypt(&part.key, *array_ref![self.buf, 0x3d0, 16], &mut self.buf[HASHES_SIZE..]);
}
Ok(())
}
fn set_logical_addr(&mut self, addr: u64) -> Result<()> {
self.set_phys_addr(self.disc_io.header.as_ref().unwrap().logical_to_fbo(addr))
}
}
impl<'a> Read for NFSReadStream<'a> {
impl Read for NFSReadStream {
fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
let mut rem = buf.len();
let mut read: usize = 0;
while rem > 0 {
let mut read_size = rem;
let block_offset: usize =
if self.phys_addr.offset == u32::MAX { 0 } else { self.phys_addr.offset as usize };
if read_size + block_offset > SECTOR_SIZE {
read_size = SECTOR_SIZE - block_offset
}
buf[read..read + read_size]
.copy_from_slice(&self.buf[block_offset..block_offset + read_size]);
read += read_size;
rem -= read_size;
self.offset += read_size as u64;
self.set_logical_addr(self.offset).map_err(|e| match e {
Error::Io(s, e) => io::Error::new(e.kind(), s),
_ => io::Error::from(io::ErrorKind::Other),
})?;
let sector = (self.pos / SECTOR_SIZE as u64) as u32;
let sector_off = (self.pos % SECTOR_SIZE as u64) as usize;
if sector != self.sector {
self.read_sector(sector)?;
self.sector = sector;
}
let read = buf.len().min(SECTOR_SIZE - sector_off);
buf[..read].copy_from_slice(&self.buf[sector_off..sector_off + read]);
self.pos += read as u64;
Ok(read)
}
}
impl<'a> Seek for NFSReadStream<'a> {
impl Seek for NFSReadStream {
fn seek(&mut self, pos: SeekFrom) -> io::Result<u64> {
self.offset = match pos {
self.pos = match pos {
SeekFrom::Start(v) => v,
SeekFrom::End(v) => (self.stable_stream_len()? as i64 + v) as u64,
SeekFrom::Current(v) => (self.offset as i64 + v) as u64,
SeekFrom::End(_) => {
return Err(io::Error::new(
io::ErrorKind::Unsupported,
"NFSReadStream: SeekFrom::End is not supported",
));
}
SeekFrom::Current(v) => self.pos.saturating_add_signed(v),
};
self.set_logical_addr(self.offset).map_err(|v| match v {
Error::Io(_, v) => v,
_ => io::Error::from(io::ErrorKind::Other),
})?;
Ok(self.offset)
Ok(self.pos)
}
fn stream_position(&mut self) -> io::Result<u64> { Ok(self.offset) }
fn stream_position(&mut self) -> io::Result<u64> { Ok(self.pos) }
}
impl<'a> ReadStream for NFSReadStream<'a> {
fn stable_stream_len(&mut self) -> io::Result<u64> { todo!() }
impl ReadStream for NFSReadStream {
fn stable_stream_len(&mut self) -> io::Result<u64> { Ok(self.disc_size) }
fn as_dyn(&mut self) -> &mut dyn ReadStream { self }
}
impl DiscIO for DiscIONFS {
fn begin_read_stream(&mut self, offset: u64) -> io::Result<Box<dyn ReadStream + '_>> {
Ok(Box::from(NFSReadStream {
disc_io: self,
file: None,
crypto: self.key,
phys_addr: Fbo::default(),
offset,
cur_file: u32::MAX,
cur_block: u32::MAX,
fn open(&self) -> Result<Box<dyn ReadStream>> {
let mut stream = NFSReadStream {
inner: self.inner.clone(),
header: self.header.clone(),
disc_header: None,
disc_size: self.disc_size,
pos: 0,
sector: u32::MAX,
buf: [0; SECTOR_SIZE],
}))
key: self.key,
part_info: vec![],
};
let mut disc_header: DiscHeader = read_from(&mut stream).context("Reading disc header")?;
if !self.encrypt {
// If we're not re-encrypting, disable partition encryption in disc header
disc_header.no_partition_encryption = 1;
}
// Read partition info so we can re-encrypt
if self.encrypt && disc_header.is_wii() {
for part in read_partition_info(&mut stream)? {
let start = part.offset + part.header.data_off();
let end = start + part.header.data_size();
if start % SECTOR_SIZE as u64 != 0 || end % SECTOR_SIZE as u64 != 0 {
return Err(Error::DiscFormat(format!(
"Partition start / end not aligned to sector size: {} / {}",
start, end
)));
}
stream.part_info.push(PartitionInfo {
start_sector: (start / SECTOR_SIZE as u64) as u32,
end_sector: (end / SECTOR_SIZE as u64) as u32,
key: part.header.ticket.title_key,
});
}
}
stream.disc_header = Some(disc_header);
// Reset stream position
stream.pos = 0;
stream.sector = u32::MAX;
Ok(Box::new(stream))
}
fn has_wii_crypto(&self) -> bool { false }
fn disc_size(&self) -> Option<u64> { None }
}
fn get_path<P>(directory: &Path, path: P) -> PathBuf
where P: AsRef<Path> {
let mut buf = directory.to_path_buf();
for component in path.as_ref().components() {
match component {
Component::ParentDir => {
buf.pop();
}
_ => buf.push(component),
}
}
buf
}
fn get_nfs(directory: &Path, num: u32) -> Result<PathBuf> {
let path = get_path(directory, format!("hif_{:06}.nfs", num));
if path.exists() {
Ok(path)
} else {
Err(Error::DiscFormat(format!("Failed to locate {}", path.display())))
}
}
impl DiscIONFS {
fn get_path<P>(&self, path: P) -> PathBuf
where P: AsRef<Path> {
let mut buf = self.directory.clone();
for component in path.as_ref().components() {
match component {
Component::ParentDir => {
buf.pop();
}
_ => buf.push(component),
}
}
buf
}
fn get_nfs(&self, num: u32) -> Result<PathBuf> {
let path = self.get_path(format!("hif_{:06}.nfs", num));
if path.exists() {
Ok(path)
} else {
Err(Error::DiscFormat(format!("Failed to locate {}", path.display())))
}
}
pub(crate) fn validate_files(&mut self) -> Result<()> {
pub fn load_files(&mut self, directory: &Path) -> Result<()> {
{
// Load key file
let primary_key_path =
self.get_path(["..", "code", "htk.bin"].iter().collect::<PathBuf>());
let secondary_key_path = self.get_path("htk.bin");
get_path(directory, ["..", "code", "htk.bin"].iter().collect::<PathBuf>());
let secondary_key_path = get_path(directory, "htk.bin");
let mut key_path = primary_key_path.canonicalize();
if key_path.is_err() {
key_path = secondary_key_path.canonicalize();
@ -355,19 +319,47 @@ impl DiscIONFS {
.read(&mut self.key)
.map_err(|v| Error::Io(format!("Failed to read {}", resolved_path.display()), v))?;
}
{
// Load header from first file
let path = self.get_nfs(0)?;
let path = get_nfs(directory, 0)?;
self.inner.add(&path)?;
let mut file = BufReader::new(
File::open(&path).with_context(|| format!("Opening file {}", path.display()))?,
);
let header = NFSHeader::from_reader(&mut file)
let header: NFSHeader = read_from(&mut file)
.with_context(|| format!("Reading NFS header from file {}", path.display()))?;
header.validate()?;
// log::debug!("{:?}", header);
// Ensure remaining files exist
for i in 1..header.calculate_num_files() {
self.get_nfs(i)?;
self.inner.add(&get_nfs(directory, i)?)?;
}
self.header = Option::from(header);
// Calculate sizes
let num_sectors =
header.lba_ranges().iter().map(|range| range.num_sectors.get()).sum::<u32>();
let max_sector = header
.lba_ranges()
.iter()
.map(|range| range.start_sector.get() + range.num_sectors.get())
.max()
.unwrap();
let raw_size = size_of::<NFSHeader>() + (num_sectors as usize * SECTOR_SIZE);
let data_size = max_sector as usize * SECTOR_SIZE;
if raw_size > self.inner.len() as usize {
return Err(Error::DiscFormat(format!(
"NFS raw size mismatch: expected at least {}, got {}",
raw_size,
self.inner.len()
)));
}
self.header = header;
self.raw_size = raw_size as u64;
self.disc_size = data_size as u64;
}
Ok(())
}

146
src/io/nkit.rs Normal file
View File

@ -0,0 +1,146 @@
use std::{
io,
io::{Read, Seek, SeekFrom},
};
use crate::{
io::MagicBytes,
util::reader::{read_from, read_u16_be, read_u32_be, read_u64_be, read_vec},
DiscMeta,
};
#[allow(unused)]
#[repr(u16)]
enum NKitHeaderFlags {
Size = 0x1,
Crc32 = 0x2,
Md5 = 0x4,
Sha1 = 0x8,
Xxhash64 = 0x10,
Key = 0x20,
Encrypted = 0x40,
ExtraData = 0x80,
IndexFile = 0x100,
}
const NKIT_HEADER_V1_FLAGS: u16 = NKitHeaderFlags::Crc32 as u16
| NKitHeaderFlags::Md5 as u16
| NKitHeaderFlags::Sha1 as u16
| NKitHeaderFlags::Xxhash64 as u16;
const fn calc_header_size(version: u8, flags: u16, key_len: u32) -> usize {
let mut size = 8;
if version >= 2 {
// header size + flags
size += 4;
}
if flags & NKitHeaderFlags::Size as u16 != 0 {
size += 8;
}
if flags & NKitHeaderFlags::Crc32 as u16 != 0 {
size += 4;
}
if flags & NKitHeaderFlags::Md5 as u16 != 0 {
size += 16;
}
if flags & NKitHeaderFlags::Sha1 as u16 != 0 {
size += 20;
}
if flags & NKitHeaderFlags::Xxhash64 as u16 != 0 {
size += 8;
}
if flags & NKitHeaderFlags::Key as u16 != 0 {
size += key_len as usize + 2;
}
size
}
#[allow(unused)]
#[derive(Debug, Clone)]
pub struct NKitHeader {
pub version: u8,
pub flags: u16,
pub size: Option<u64>,
pub crc32: Option<u32>,
pub md5: Option<[u8; 16]>,
pub sha1: Option<[u8; 20]>,
pub xxhash64: Option<u64>,
}
const VERSION_PREFIX: [u8; 7] = *b"NKIT v";
impl NKitHeader {
pub fn try_read_from<R>(reader: &mut R) -> Option<Self>
where R: Read + Seek + ?Sized {
let magic: MagicBytes = read_from(reader).ok()?;
if magic == *b"NKIT" {
reader.seek(SeekFrom::Current(-4)).ok()?;
match NKitHeader::read_from(reader) {
Ok(header) => Some(header),
Err(e) => {
log::warn!("Failed to read NKit header: {}", e);
None
}
}
} else {
None
}
}
pub fn read_from<R>(reader: &mut R) -> io::Result<Self>
where R: Read + ?Sized {
let version_string: [u8; 8] = read_from(reader)?;
if version_string[0..7] != VERSION_PREFIX
|| version_string[7] < b'1'
|| version_string[7] > b'9'
{
return Err(io::Error::new(
io::ErrorKind::InvalidData,
"Invalid NKit header version string",
));
}
let version = version_string[7] - b'0';
let header_size = match version {
1 => calc_header_size(version, NKIT_HEADER_V1_FLAGS, 0) as u16,
2 => read_u16_be(reader)?,
_ => {
return Err(io::Error::new(
io::ErrorKind::InvalidData,
format!("Unsupported NKit header version: {}", version),
));
}
};
let mut remaining_header_size = header_size as usize - 8;
if version >= 2 {
// We read the header size already
remaining_header_size -= 2;
}
let header_bytes = read_vec(reader, remaining_header_size)?;
let mut reader = &header_bytes[..];
let flags = if version == 1 { NKIT_HEADER_V1_FLAGS } else { read_u16_be(&mut reader)? };
let size = (flags & NKitHeaderFlags::Size as u16 != 0)
.then(|| read_u64_be(&mut reader))
.transpose()?;
let crc32 = (flags & NKitHeaderFlags::Crc32 as u16 != 0)
.then(|| read_u32_be(&mut reader))
.transpose()?;
let md5 = (flags & NKitHeaderFlags::Md5 as u16 != 0)
.then(|| read_from::<[u8; 16], _>(&mut reader))
.transpose()?;
let sha1 = (flags & NKitHeaderFlags::Sha1 as u16 != 0)
.then(|| read_from::<[u8; 20], _>(&mut reader))
.transpose()?;
let xxhash64 = (flags & NKitHeaderFlags::Xxhash64 as u16 != 0)
.then(|| read_u64_be(&mut reader))
.transpose()?;
Ok(Self { version, flags, size, crc32, md5, sha1, xxhash64 })
}
}
impl From<&NKitHeader> for DiscMeta {
fn from(value: &NKitHeader) -> Self {
Self { crc32: value.crc32, md5: value.md5, sha1: value.sha1, xxhash64: value.xxhash64 }
}
}

165
src/io/split.rs Normal file
View File

@ -0,0 +1,165 @@
use std::{
fs::File,
io,
io::{Read, Seek, SeekFrom},
path::{Path, PathBuf},
};
use crate::{ErrorContext, ReadStream, Result, ResultContext};
#[derive(Debug)]
pub struct SplitFileReader {
files: Vec<Split<PathBuf>>,
open_file: Option<Split<File>>,
pos: u64,
}
#[derive(Debug, Clone)]
struct Split<T> {
inner: T,
begin: u64,
size: u64,
}
impl<T> Split<T> {
fn contains(&self, pos: u64) -> bool { self.begin <= pos && pos < self.begin + self.size }
}
// .iso.1, .iso.2, etc.
fn split_path_1(input: &Path, index: u32) -> PathBuf {
let input_str = input.to_str().unwrap_or("[INVALID]");
let mut out = input_str.to_string();
out.push('.');
out.push(char::from_digit(index, 10).unwrap());
PathBuf::from(out)
}
// .part1.iso, .part2.iso, etc.
fn split_path_2(input: &Path, index: u32) -> PathBuf {
let extension = input.extension().and_then(|s| s.to_str()).unwrap_or("iso");
let input_without_ext = input.with_extension("");
let input_str = input_without_ext.to_str().unwrap_or("[INVALID]");
let mut out = input_str.to_string();
out.push_str(".part");
out.push(char::from_digit(index, 10).unwrap());
out.push('.');
out.push_str(extension);
PathBuf::from(out)
}
// .wbf1, .wbf2, etc.
fn split_path_3(input: &Path, index: u32) -> PathBuf {
let input_str = input.to_str().unwrap_or("[INVALID]");
let mut chars = input_str.chars();
chars.next_back();
let mut out = chars.as_str().to_string();
out.push(char::from_digit(index, 10).unwrap());
PathBuf::from(out)
}
impl SplitFileReader {
pub fn empty() -> Self { Self { files: Vec::new(), open_file: None, pos: 0 } }
pub fn new(path: &Path) -> Result<Self> {
let mut files = vec![];
let mut begin = 0;
match path.metadata() {
Ok(metadata) => {
files.push(Split { inner: path.to_path_buf(), begin, size: metadata.len() });
begin += metadata.len();
}
Err(e) => {
return Err(e.context(format!("Failed to stat file {}", path.display())));
}
}
for path_fn in [split_path_1, split_path_2, split_path_3] {
let mut index = 1;
loop {
let path = path_fn(path, index);
if let Ok(metadata) = path.metadata() {
files.push(Split { inner: path, begin, size: metadata.len() });
begin += metadata.len();
index += 1;
} else {
break;
}
}
if index > 1 {
break;
}
}
Ok(Self { files, open_file: None, pos: 0 })
}
pub fn add(&mut self, path: &Path) -> Result<()> {
let begin = self.len();
let metadata =
path.metadata().context(format!("Failed to stat file {}", path.display()))?;
self.files.push(Split { inner: path.to_path_buf(), begin, size: metadata.len() });
Ok(())
}
pub fn reset(&mut self) {
self.open_file = None;
self.pos = 0;
}
pub fn len(&self) -> u64 { self.files.last().map_or(0, |f| f.begin + f.size) }
}
impl Read for SplitFileReader {
fn read(&mut self, mut buf: &mut [u8]) -> io::Result<usize> {
let mut total = 0;
while !buf.is_empty() {
if let Some(split) = &mut self.open_file {
let n = buf.len().min((split.begin + split.size - self.pos) as usize);
if n == 0 {
self.open_file = None;
continue;
}
split.inner.read_exact(&mut buf[..n])?;
total += n;
self.pos += n as u64;
buf = &mut buf[n..];
} else if let Some(split) = self.files.iter().find(|f| f.contains(self.pos)) {
let mut file = File::open(&split.inner)?;
if self.pos > split.begin {
file.seek(SeekFrom::Start(self.pos - split.begin))?;
}
self.open_file = Some(Split { inner: file, begin: split.begin, size: split.size });
} else {
break;
}
}
Ok(total)
}
}
impl Seek for SplitFileReader {
fn seek(&mut self, pos: SeekFrom) -> io::Result<u64> {
self.pos = match pos {
SeekFrom::Start(pos) => pos,
SeekFrom::Current(offset) => self.pos.saturating_add_signed(offset),
SeekFrom::End(offset) => self.len().saturating_add_signed(offset),
};
if let Some(split) = &mut self.open_file {
if split.contains(self.pos) {
// Seek within the open file
split.inner.seek(SeekFrom::Start(self.pos - split.begin))?;
} else {
self.open_file = None;
}
}
Ok(self.pos)
}
}
impl ReadStream for SplitFileReader {
fn stable_stream_len(&mut self) -> io::Result<u64> { Ok(self.len()) }
fn as_dyn(&mut self) -> &mut dyn ReadStream { self }
}
impl Clone for SplitFileReader {
fn clone(&self) -> Self { Self { files: self.files.clone(), open_file: None, pos: self.pos } }
}

203
src/io/wbfs.rs Normal file
View File

@ -0,0 +1,203 @@
use std::{
cmp::min,
io,
io::{BufReader, Read, Seek, SeekFrom},
mem::size_of,
path::Path,
};
use zerocopy::{big_endian::*, AsBytes, FromBytes, FromZeroes};
use crate::{
disc::SECTOR_SIZE,
io::{nkit::NKitHeader, split::SplitFileReader, DiscIO, DiscMeta, MagicBytes},
util::reader::{read_from, read_vec},
Error, ReadStream, Result, ResultContext,
};
pub const WBFS_MAGIC: MagicBytes = *b"WBFS";
#[derive(Debug, Clone, PartialEq, FromBytes, FromZeroes, AsBytes)]
#[repr(C, align(4))]
struct WBFSHeader {
magic: MagicBytes,
num_sectors: U32,
sector_size_shift: u8,
wbfs_sector_size_shift: u8,
_pad: [u8; 2],
}
impl WBFSHeader {
fn sector_size(&self) -> u32 { 1 << self.sector_size_shift }
fn wbfs_sector_size(&self) -> u32 { 1 << self.wbfs_sector_size_shift }
// fn align_lba(&self, x: u32) -> u32 { (x + self.sector_size() - 1) & !(self.sector_size() - 1) }
//
// fn num_wii_sectors(&self) -> u32 {
// (self.num_sectors.get() / SECTOR_SIZE as u32) * self.sector_size()
// }
//
// fn max_wii_sectors(&self) -> u32 { NUM_WII_SECTORS }
//
// fn num_wbfs_sectors(&self) -> u32 {
// self.num_wii_sectors() >> (self.wbfs_sector_size_shift - 15)
// }
fn max_wbfs_sectors(&self) -> u32 { NUM_WII_SECTORS >> (self.wbfs_sector_size_shift - 15) }
}
const DISC_HEADER_SIZE: usize = 0x100;
const NUM_WII_SECTORS: u32 = 143432 * 2; // Double layer discs
pub struct DiscIOWBFS {
pub inner: SplitFileReader,
/// WBFS header
header: WBFSHeader,
/// Map of Wii LBAs to WBFS LBAs
wlba_table: Vec<U16>,
/// Optional NKit header
nkit_header: Option<NKitHeader>,
}
impl DiscIOWBFS {
pub fn new(filename: &Path) -> Result<Self> {
let mut inner = BufReader::new(SplitFileReader::new(filename)?);
let header: WBFSHeader = read_from(&mut inner).context("Reading WBFS header")?;
if header.magic != WBFS_MAGIC {
return Err(Error::DiscFormat("Invalid WBFS magic".to_string()));
}
// log::debug!("{:?}", header);
// log::debug!("sector_size: {}", header.sector_size());
// log::debug!("wbfs_sector_size: {}", header.wbfs_sector_size());
let file_len = inner.stable_stream_len().context("Getting WBFS file size")?;
let expected_file_len = header.num_sectors.get() as u64 * header.sector_size() as u64;
if file_len != expected_file_len {
return Err(Error::DiscFormat(format!(
"Invalid WBFS file size: {}, expected {}",
file_len, expected_file_len
)));
}
let disc_table: Vec<u8> =
read_vec(&mut inner, header.sector_size() as usize - size_of::<WBFSHeader>())
.context("Reading WBFS disc table")?;
if disc_table[0] != 1 {
return Err(Error::DiscFormat("WBFS doesn't contain a disc".to_string()));
}
if disc_table[1../*max_disc as usize*/].iter().any(|&x| x != 0) {
return Err(Error::DiscFormat("Only single WBFS discs are supported".to_string()));
}
// Read WBFS LBA table
inner
.seek(SeekFrom::Start(header.sector_size() as u64 + DISC_HEADER_SIZE as u64))
.context("Seeking to WBFS LBA table")?; // Skip header
let wlba_table: Vec<U16> = read_vec(&mut inner, header.max_wbfs_sectors() as usize)
.context("Reading WBFS LBA table")?;
// Read NKit header if present (always at 0x10000)
inner.seek(SeekFrom::Start(0x10000)).context("Seeking to NKit header")?;
let nkit_header = NKitHeader::try_read_from(&mut inner);
// Reset reader
let mut inner = inner.into_inner();
inner.reset();
Ok(Self { inner, header, wlba_table, nkit_header })
}
}
impl DiscIO for DiscIOWBFS {
fn open(&self) -> Result<Box<dyn ReadStream>> {
Ok(Box::new(WBFSReadStream {
inner: BufReader::new(self.inner.clone()),
header: self.header.clone(),
wlba_table: self.wlba_table.clone(),
wlba: u32::MAX,
pos: 0,
disc_size: self.nkit_header.as_ref().and_then(|h| h.size),
}))
}
fn meta(&self) -> Result<DiscMeta> {
Ok(self.nkit_header.as_ref().map(DiscMeta::from).unwrap_or_default())
}
fn disc_size(&self) -> Option<u64> { self.nkit_header.as_ref().and_then(|h| h.size) }
}
struct WBFSReadStream {
/// File reader
inner: BufReader<SplitFileReader>,
/// WBFS header
header: WBFSHeader,
/// Map of Wii LBAs to WBFS LBAs
wlba_table: Vec<U16>,
/// Current WBFS LBA
wlba: u32,
/// Current stream offset
pos: u64,
/// Optional known size
disc_size: Option<u64>,
}
impl WBFSReadStream {
fn disc_size(&self) -> u64 {
self.disc_size.unwrap_or(NUM_WII_SECTORS as u64 * SECTOR_SIZE as u64)
}
}
impl Read for WBFSReadStream {
fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
let wlba = (self.pos >> self.header.wbfs_sector_size_shift) as u32;
let wlba_size = self.header.wbfs_sector_size() as u64;
let wlba_offset = self.pos & (wlba_size - 1);
if wlba != self.wlba {
if self.pos >= self.disc_size() || wlba >= self.header.max_wbfs_sectors() {
return Ok(0);
}
let wlba_start = wlba_size * self.wlba_table[wlba as usize].get() as u64;
self.inner.seek(SeekFrom::Start(wlba_start + wlba_offset))?;
self.wlba = wlba;
}
let to_read = min(buf.len(), (wlba_size - wlba_offset) as usize);
let read = self.inner.read(&mut buf[..to_read])?;
self.pos += read as u64;
Ok(read)
}
}
impl Seek for WBFSReadStream {
fn seek(&mut self, pos: SeekFrom) -> io::Result<u64> {
let new_pos = match pos {
SeekFrom::Start(v) => v,
SeekFrom::End(_) => {
return Err(io::Error::new(
io::ErrorKind::Unsupported,
"WBFSReadStream: SeekFrom::End is not supported",
));
}
SeekFrom::Current(v) => self.pos.saturating_add_signed(v),
};
let new_wlba = (self.pos >> self.header.wbfs_sector_size_shift) as u32;
if new_wlba == self.wlba {
// Seek within the same WBFS LBA
self.inner.seek(SeekFrom::Current(new_pos as i64 - self.pos as i64))?;
} else {
// Seek to a different WBFS LBA, handled by next read
self.wlba = u32::MAX;
}
self.pos = new_pos;
Ok(new_pos)
}
}
impl ReadStream for WBFSReadStream {
fn stable_stream_len(&mut self) -> io::Result<u64> { Ok(self.disc_size()) }
fn as_dyn(&mut self) -> &mut dyn ReadStream { self }
}

1229
src/io/wia.rs
View File

File diff suppressed because it is too large Load Diff

132
src/lib.rs
View File

@ -1,4 +1,4 @@
#![warn(missing_docs, rustdoc::missing_doc_code_examples)]
// #![warn(missing_docs, rustdoc::missing_doc_code_examples)]
//! Library for traversing & reading GameCube and Wii disc images.
//!
//! Based on the C++ library [nod](https://github.com/AxioDL/nod),
@ -16,22 +16,17 @@
//! ```no_run
//! use std::io::Read;
//!
//! use nod::{
//! disc::{new_disc_base, PartHeader},
//! fst::NodeType,
//! io::{new_disc_io, DiscIOOptions},
//! };
//! use nod::{Disc, PartitionKind};
//!
//! fn main() -> nod::Result<()> {
//! let options = DiscIOOptions::default();
//! let mut disc_io = new_disc_io("path/to/file.iso".as_ref(), &options)?;
//! let disc_base = new_disc_base(disc_io.as_mut())?;
//! let mut partition = disc_base.get_data_partition(disc_io.as_mut(), false)?;
//! let header = partition.read_header()?;
//! if let Some(NodeType::File(node)) = header.find_node("/MP3/Worlds.txt") {
//! let disc = Disc::new("path/to/file.iso")?;
//! let mut partition = disc.open_partition_kind(PartitionKind::Data)?;
//! let meta = partition.meta()?;
//! let fst = meta.fst()?;
//! if let Some((_, node)) = fst.find("/MP3/Worlds.txt") {
//! let mut s = String::new();
//! partition
//! .begin_file_stream(node)
//! .open_file(node)
//! .expect("Failed to open file stream")
//! .read_to_string(&mut s)
//! .expect("Failed to read file");
@ -40,11 +35,24 @@
//! Ok(())
//! }
//! ```
pub mod disc;
pub mod fst;
pub mod io;
pub mod streams;
pub mod util;
use std::path::Path;
use disc::DiscBase;
pub use disc::{
AppLoaderHeader, DiscHeader, DolHeader, PartitionBase, PartitionHeader, PartitionInfo,
PartitionKind, PartitionMeta, BI2_SIZE, BOOT_SIZE,
};
pub use fst::{Fst, Node, NodeKind};
use io::DiscIO;
pub use io::DiscMeta;
pub use streams::ReadStream;
mod disc;
mod fst;
mod io;
mod streams;
mod util;
/// Error types for nod.
#[derive(thiserror::Error, Debug)]
@ -55,19 +63,22 @@ pub enum Error {
/// A general I/O error.
#[error("I/O error: {0}")]
Io(String, #[source] std::io::Error),
/// An unknown error.
#[error("error: {0}")]
Other(String),
}
impl From<&str> for Error {
fn from(s: &str) -> Error { Error::Other(s.to_string()) }
}
impl From<String> for Error {
fn from(s: String) -> Error { Error::Other(s) }
}
/// Helper result type for [`Error`].
pub type Result<T, E = Error> = core::result::Result<T, E>;
impl From<aes::cipher::block_padding::UnpadError> for Error {
fn from(_: aes::cipher::block_padding::UnpadError) -> Self { unreachable!() }
}
impl From<base16ct::Error> for Error {
fn from(_: base16ct::Error) -> Self { unreachable!() }
}
pub trait ErrorContext {
fn context(self, context: impl Into<String>) -> Error;
}
@ -95,3 +106,72 @@ where E: ErrorContext
self.map_err(|e| e.context(f()))
}
}
#[derive(Default, Debug, Clone)]
pub struct OpenOptions {
/// Wii: Validate partition data hashes while reading the disc image if present.
pub validate_hashes: bool,
/// Wii: Rebuild partition data hashes for the disc image if the underlying format
/// does not store them. (e.g. WIA/RVZ)
pub rebuild_hashes: bool,
/// Wii: Rebuild partition data encryption if the underlying format stores data decrypted.
/// (e.g. WIA/RVZ, NFS)
///
/// Unnecessary if only opening a disc partition stream, which will already provide a decrypted
/// stream. In this case, this will cause unnecessary processing.
///
/// Only valid in combination with `rebuild_hashes`, as the data encryption is derived from the
/// partition data hashes.
pub rebuild_encryption: bool,
}
pub struct Disc {
io: Box<dyn DiscIO>,
base: Box<dyn DiscBase>,
options: OpenOptions,
}
impl Disc {
/// Opens a disc image from a file path.
pub fn new<P: AsRef<Path>>(path: P) -> Result<Disc> {
Disc::new_with_options(path, &OpenOptions::default())
}
/// Opens a disc image from a file path with custom options.
pub fn new_with_options<P: AsRef<Path>>(path: P, options: &OpenOptions) -> Result<Disc> {
let mut io = io::open(path.as_ref(), options)?;
let base = disc::new(io.as_mut())?;
Ok(Disc { io, base, options: options.clone() })
}
/// The disc's header.
pub fn header(&self) -> &DiscHeader { self.base.header() }
/// Returns extra metadata included in the disc file format, if any.
pub fn meta(&self) -> Result<DiscMeta> { self.io.meta() }
/// The disc's size in bytes or an estimate if not stored by the format.
pub fn disc_size(&self) -> u64 { self.base.disc_size() }
/// A list of partitions on the disc.
///
/// For GameCube discs, this will return a single data partition spanning the entire disc.
pub fn partitions(&self) -> Vec<PartitionInfo> { self.base.partitions() }
/// Opens a new read stream for the base disc image.
///
/// Generally does _not_ need to be used directly. Opening a partition will provide a
/// decrypted stream instead.
pub fn open(&self) -> Result<Box<dyn ReadStream + '_>> { self.io.open() }
/// Opens a new, decrypted partition read stream for the specified partition index.
pub fn open_partition(&self, index: usize) -> Result<Box<dyn PartitionBase + '_>> {
self.base.open_partition(self.io.as_ref(), index, &self.options)
}
/// Opens a new partition read stream for the first partition matching
/// the specified type.
pub fn open_partition_kind(&self, kind: PartitionKind) -> Result<Box<dyn PartitionBase + '_>> {
self.base.open_partition_kind(self.io.as_ref(), kind, &self.options)
}
}

31
src/streams.rs
View File

@ -3,8 +3,7 @@
use std::{
fs::File,
io,
io::{Read, Seek, SeekFrom},
ops::DerefMut,
io::{BufReader, Read, Seek, SeekFrom},
};
/// Creates a fixed-size array reference from a slice.
@ -31,6 +30,14 @@ macro_rules! array_ref_mut {
}};
}
/// Compile-time assertion.
#[macro_export]
macro_rules! static_assert {
($condition:expr) => {
const _: () = core::assert!($condition);
};
}
/// A helper trait for seekable read streams.
pub trait ReadStream: Read + Seek {
/// Replace with [`Read.stream_len`] when stabilized.
@ -65,12 +72,20 @@ impl ReadStream for File {
fn as_dyn(&mut self) -> &mut dyn ReadStream { self }
}
impl<T> ReadStream for BufReader<T>
where T: ReadStream
{
fn stable_stream_len(&mut self) -> io::Result<u64> { self.get_mut().stable_stream_len() }
fn as_dyn(&mut self) -> &mut dyn ReadStream { self }
}
trait WindowedReadStream: ReadStream {
fn base_stream(&mut self) -> &mut dyn ReadStream;
fn window(&self) -> (u64, u64);
}
/// An window into an existing [`ReadStream`], with ownership of the underlying stream.
/// A window into an existing [`ReadStream`], with ownership of the underlying stream.
pub struct OwningWindowedReadStream<'a> {
/// The base stream.
pub base: Box<dyn ReadStream + 'a>,
@ -111,7 +126,7 @@ impl<'a> SharedWindowedReadStream<'a> {
}
#[inline(always)]
fn windowed_read(stream: &mut dyn WindowedReadStream, buf: &mut [u8]) -> io::Result<usize> {
fn windowed_read(stream: &mut impl WindowedReadStream, buf: &mut [u8]) -> io::Result<usize> {
let pos = stream.stream_position()?;
let size = stream.stable_stream_len()?;
if pos == size {
@ -125,7 +140,7 @@ fn windowed_read(stream: &mut dyn WindowedReadStream, buf: &mut [u8]) -> io::Res
}
#[inline(always)]
fn windowed_seek(stream: &mut dyn WindowedReadStream, pos: SeekFrom) -> io::Result<u64> {
fn windowed_seek(stream: &mut impl WindowedReadStream, pos: SeekFrom) -> io::Result<u64> {
let (begin, end) = stream.window();
let result = stream.base_stream().seek(match pos {
SeekFrom::Start(p) => SeekFrom::Start(begin + p),
@ -158,7 +173,7 @@ impl<'a> ReadStream for OwningWindowedReadStream<'a> {
}
impl<'a> WindowedReadStream for OwningWindowedReadStream<'a> {
fn base_stream(&mut self) -> &mut dyn ReadStream { self.base.deref_mut() }
fn base_stream(&mut self) -> &mut dyn ReadStream { self.base.as_dyn() }
fn window(&self) -> (u64, u64) { (self.begin, self.end) }
}
@ -219,8 +234,8 @@ impl Seek for ByteReadStream<'_> {
fn seek(&mut self, pos: SeekFrom) -> io::Result<u64> {
let new_pos = match pos {
SeekFrom::Start(v) => v,
SeekFrom::End(v) => (self.bytes.len() as i64 + v) as u64,
SeekFrom::Current(v) => (self.position as i64 + v) as u64,
SeekFrom::End(v) => (self.bytes.len() as u64).saturating_add_signed(v),
SeekFrom::Current(v) => self.position.saturating_add_signed(v),
};
if new_pos > self.bytes.len() as u64 {
Err(io::Error::from(io::ErrorKind::UnexpectedEof))

82
src/util/compress.rs Normal file
View File

@ -0,0 +1,82 @@
use std::{io, io::Read};
use crate::{Error, Result};
/// Decodes the LZMA Properties byte (lc/lp/pb).
/// See `lzma_lzma_lclppb_decode` in `liblzma/lzma/lzma_decoder.c`.
#[cfg(feature = "compress-lzma")]
pub fn lzma_lclppb_decode(options: &mut liblzma::stream::LzmaOptions, byte: u8) -> Result<()> {
let mut d = byte as u32;
if d >= (9 * 5 * 5) {
return Err(Error::DiscFormat(format!("Invalid LZMA props byte: {}", d)));
}
options.literal_context_bits(d % 9);
d /= 9;
options.position_bits(d / 5);
options.literal_position_bits(d % 5);
Ok(())
}
/// Decodes LZMA properties.
/// See `lzma_lzma_props_decode` in `liblzma/lzma/lzma_decoder.c`.
#[cfg(feature = "compress-lzma")]
pub fn lzma_props_decode(props: &[u8]) -> Result<liblzma::stream::LzmaOptions> {
use crate::array_ref;
if props.len() != 5 {
return Err(Error::DiscFormat(format!("Invalid LZMA props length: {}", props.len())));
}
let mut options = liblzma::stream::LzmaOptions::new();
lzma_lclppb_decode(&mut options, props[0])?;
options.dict_size(u32::from_le_bytes(*array_ref!(props, 1, 4)));
Ok(options)
}
/// Decodes LZMA2 properties.
/// See `lzma_lzma2_props_decode` in `liblzma/lzma/lzma2_decoder.c`.
#[cfg(feature = "compress-lzma")]
pub fn lzma2_props_decode(props: &[u8]) -> Result<liblzma::stream::LzmaOptions> {
use std::cmp::Ordering;
if props.len() != 1 {
return Err(Error::DiscFormat(format!("Invalid LZMA2 props length: {}", props.len())));
}
let d = props[0] as u32;
let mut options = liblzma::stream::LzmaOptions::new();
options.dict_size(match d.cmp(&40) {
Ordering::Greater => {
return Err(Error::DiscFormat(format!("Invalid LZMA2 props byte: {}", d)));
}
Ordering::Equal => u32::MAX,
Ordering::Less => (2 | (d & 1)) << (d / 2 + 11),
});
Ok(options)
}
/// Creates a new raw LZMA decoder with the given options.
#[cfg(feature = "compress-lzma")]
pub fn new_lzma_decoder<R>(
reader: R,
options: &liblzma::stream::LzmaOptions,
) -> io::Result<liblzma::read::XzDecoder<R>>
where
R: Read,
{
let mut filters = liblzma::stream::Filters::new();
filters.lzma1(options);
let stream = liblzma::stream::Stream::new_raw_decoder(&filters).map_err(io::Error::from)?;
Ok(liblzma::read::XzDecoder::new_stream(reader, stream))
}
/// Creates a new raw LZMA2 decoder with the given options.
#[cfg(feature = "compress-lzma")]
pub fn new_lzma2_decoder<R>(
reader: R,
options: &liblzma::stream::LzmaOptions,
) -> io::Result<liblzma::read::XzDecoder<R>>
where
R: Read,
{
let mut filters = liblzma::stream::Filters::new();
filters.lzma2(options);
let stream = liblzma::stream::Stream::new_raw_decoder(&filters).map_err(io::Error::from)?;
Ok(liblzma::read::XzDecoder::new_stream(reader, stream))
}

89
src/util/lfg.rs
View File

@ -1,12 +1,19 @@
use std::{cmp::min, io, io::Read};
pub(crate) const LFG_K: usize = 521;
pub(crate) const LFG_J: usize = 32;
pub(crate) const SEED_SIZE: usize = 17;
use zerocopy::{transmute_ref, AsBytes};
use crate::disc::SECTOR_SIZE;
pub const LFG_K: usize = 521;
pub const LFG_J: usize = 32;
pub const SEED_SIZE: usize = 17;
/// Lagged Fibonacci generator for Wii partition junk data.
/// https://github.com/dolphin-emu/dolphin/blob/master/docs/WiaAndRvz.md#prng-algorithm
pub(crate) struct LaggedFibonacci {
///
/// References (license CC0-1.0):
/// https://github.com/dolphin-emu/dolphin/blob/a0f555648c27ec0c928f6b1e1fcad5e2d7c4d0c4/docs/WiaAndRvz.md
/// https://github.com/dolphin-emu/dolphin/blob/a0f555648c27ec0c928f6b1e1fcad5e2d7c4d0c4/Source/Core/DiscIO/LaggedFibonacciGenerator.cpp
pub struct LaggedFibonacci {
buffer: [u32; LFG_K],
position: usize,
}
@ -21,6 +28,8 @@ impl LaggedFibonacci {
self.buffer[i] =
(self.buffer[i - 17] << 23) ^ (self.buffer[i - 16] >> 9) ^ self.buffer[i - 1];
}
// Instead of doing the "shift by 18 instead of 16" oddity when actually outputting the data,
// we can do the shifting (and byteswapping) at this point to make the output code simpler.
for x in self.buffer.iter_mut() {
*x = ((*x & 0xFF00FFFF) | (*x >> 2 & 0x00FF0000)).swap_bytes();
}
@ -29,9 +38,32 @@ impl LaggedFibonacci {
}
}
pub(crate) fn init_with_reader<R>(&mut self, reader: &mut R) -> io::Result<()>
pub fn init_with_seed(&mut self, init: [u8; 4], disc_num: u8, partition_offset: u64) {
let seed = u32::from_be_bytes([
init[2],
init[1],
init[3].wrapping_add(init[2]),
init[0].wrapping_add(init[1]),
]) ^ disc_num as u32;
let sector = (partition_offset / SECTOR_SIZE as u64) as u32;
let mut n = seed.wrapping_mul(0x260BCD5) ^ sector.wrapping_mul(0x1EF29123);
for i in 0..SEED_SIZE {
let mut v = 0u32;
for _ in 0..LFG_J {
n = n.wrapping_mul(0x5D588B65).wrapping_add(1);
v = (v >> 1) | (n & 0x80000000);
}
self.buffer[i] = v;
}
self.buffer[16] ^= self.buffer[0] >> 9 ^ self.buffer[16] << 23;
self.position = 0;
self.init();
self.skip((partition_offset % SECTOR_SIZE as u64) as usize);
}
pub fn init_with_reader<R>(&mut self, reader: &mut R) -> io::Result<()>
where R: Read + ?Sized {
reader.read_exact(bytemuck::cast_slice_mut(&mut self.buffer[..SEED_SIZE]))?;
reader.read_exact(self.buffer[..SEED_SIZE].as_bytes_mut())?;
for x in self.buffer[..SEED_SIZE].iter_mut() {
*x = u32::from_be(*x);
}
@ -40,7 +72,7 @@ impl LaggedFibonacci {
Ok(())
}
pub(crate) fn forward(&mut self) {
pub fn forward(&mut self) {
for i in 0..LFG_J {
self.buffer[i] ^= self.buffer[i + LFG_K - LFG_J];
}
@ -49,7 +81,7 @@ impl LaggedFibonacci {
}
}
pub(crate) fn skip(&mut self, n: usize) {
pub fn skip(&mut self, n: usize) {
self.position += n;
while self.position >= LFG_K * 4 {
self.forward();
@ -57,15 +89,11 @@ impl LaggedFibonacci {
}
}
#[inline]
fn bytes(&self) -> &[u8; LFG_K * 4] {
unsafe { &*(self.buffer.as_ptr() as *const [u8; LFG_K * 4]) }
}
pub(crate) fn fill(&mut self, mut buf: &mut [u8]) {
pub fn fill(&mut self, mut buf: &mut [u8]) {
while !buf.is_empty() {
let len = min(buf.len(), LFG_K * 4 - self.position);
buf[..len].copy_from_slice(&self.bytes()[self.position..self.position + len]);
let bytes: &[u8; LFG_K * 4] = transmute_ref!(&self.buffer);
buf[..len].copy_from_slice(&bytes[self.position..self.position + len]);
self.position += len;
buf = &mut buf[len..];
if self.position == LFG_K * 4 {
@ -75,3 +103,32 @@ impl LaggedFibonacci {
}
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_init_with_seed_1() {
let mut lfg = LaggedFibonacci::default();
lfg.init_with_seed([0x47, 0x41, 0x4c, 0x45], 0, 0x600000);
let mut buf = [0u8; 16];
lfg.fill(&mut buf);
assert_eq!(buf, [
0xE9, 0x47, 0x67, 0xBD, 0x41, 0x50, 0x4D, 0x5D, 0x61, 0x48, 0xB1, 0x99, 0xA0, 0x12,
0x0C, 0xBA
]);
}
#[test]
fn test_init_with_seed_2() {
let mut lfg = LaggedFibonacci::default();
lfg.init_with_seed([0x47, 0x41, 0x4c, 0x45], 0, 0x608000);
let mut buf = [0u8; 16];
lfg.fill(&mut buf);
assert_eq!(buf, [
0xE2, 0xBB, 0xBD, 0x77, 0xDA, 0xB2, 0x22, 0x42, 0x1C, 0x0C, 0x0B, 0xFC, 0xAC, 0x06,
0xEA, 0xD0
]);
}
}

1
src/util/mod.rs
View File

@ -1,5 +1,6 @@
use std::ops::{Div, Rem};
pub(crate) mod compress;
pub(crate) mod lfg;
pub(crate) mod reader;
pub(crate) mod take_seek;

283
src/util/reader.rs
View File

@ -1,243 +1,60 @@
use std::{ffi::CString, io, io::Read};
use std::{io, io::Read};
use io::Write;
use zerocopy::{AsBytes, FromBytes, FromZeroes};
pub(crate) const DYNAMIC_SIZE: usize = 0;
pub(crate) const fn struct_size<const N: usize>(fields: [usize; N]) -> usize {
let mut result = 0;
let mut i = 0;
while i < N {
let size = fields[i];
if size == DYNAMIC_SIZE {
// Dynamically sized
return DYNAMIC_SIZE;
}
result += size;
i += 1;
}
result
}
pub(crate) fn skip_bytes<const N: usize, R>(reader: &mut R) -> io::Result<()>
where R: Read + ?Sized {
let mut buf = [0u8; N];
reader.read_exact(&mut buf)?;
Ok(())
}
pub(crate) trait FromReader: Sized {
type Args<'a>;
const STATIC_SIZE: usize;
fn from_reader_args<R>(reader: &mut R, args: Self::Args<'_>) -> io::Result<Self>
where R: Read + ?Sized;
fn from_reader<'a, R>(reader: &mut R) -> io::Result<Self>
where
R: Read + ?Sized,
Self::Args<'a>: Default,
{
Self::from_reader_args(reader, Default::default())
}
}
macro_rules! impl_from_reader {
($($t:ty),*) => {
$(
impl FromReader for $t {
type Args<'a> = ();
const STATIC_SIZE: usize = std::mem::size_of::<Self>();
fn from_reader_args<R>(reader: &mut R, _args: Self::Args<'_>) -> io::Result<Self> where R: Read + ?Sized{
let mut buf = [0u8; Self::STATIC_SIZE];
reader.read_exact(&mut buf)?;
Ok(Self::from_be_bytes(buf))
}
}
)*
};
}
impl_from_reader!(u8, u16, u32, u64, u128, i8, i16, i32, i64, i128);
#[repr(transparent)]
pub struct U24(pub u32);
impl FromReader for U24 {
type Args<'a> = ();
const STATIC_SIZE: usize = 3;
fn from_reader_args<R>(reader: &mut R, _args: Self::Args<'_>) -> io::Result<Self>
where R: Read + ?Sized {
let mut buf = [0u8; 4];
reader.read_exact(&mut buf[1..])?;
Ok(U24(u32::from_be_bytes(buf)))
}
}
impl<const N: usize> FromReader for [u8; N] {
type Args<'a> = ();
const STATIC_SIZE: usize = N;
fn from_reader_args<R>(reader: &mut R, _args: Self::Args<'_>) -> io::Result<Self>
where R: Read + ?Sized {
let mut buf = [0u8; N];
reader.read_exact(&mut buf)?;
Ok(buf)
}
}
impl<const N: usize> FromReader for [u32; N] {
type Args<'a> = ();
const STATIC_SIZE: usize = N * u32::STATIC_SIZE;
fn from_reader_args<R>(reader: &mut R, _args: Self::Args<'_>) -> io::Result<Self>
where R: Read + ?Sized {
let mut buf = [0u32; N];
reader.read_exact(unsafe {
std::slice::from_raw_parts_mut(buf.as_mut_ptr() as *mut u8, Self::STATIC_SIZE)
})?;
for x in buf.iter_mut() {
*x = u32::from_be(*x);
}
Ok(buf)
}
}
impl FromReader for CString {
type Args<'a> = ();
const STATIC_SIZE: usize = DYNAMIC_SIZE;
fn from_reader_args<R>(reader: &mut R, _args: Self::Args<'_>) -> io::Result<Self>
where R: Read + ?Sized {
let mut buf = Vec::new();
loop {
let mut byte = [0u8; 1];
reader.read_exact(&mut byte)?;
buf.push(byte[0]);
if byte[0] == 0 {
break;
}
}
Ok(unsafe { CString::from_vec_with_nul_unchecked(buf) })
}
}
pub(crate) fn read_bytes<R>(reader: &mut R, count: usize) -> io::Result<Vec<u8>>
where R: Read + ?Sized {
let mut buf = vec![0u8; count];
reader.read_exact(&mut buf)?;
Ok(buf)
}
pub(crate) fn read_vec<'a, T, R>(reader: &mut R, count: usize) -> io::Result<Vec<T>>
#[inline(always)]
pub fn read_from<T, R>(reader: &mut R) -> io::Result<T>
where
T: FromReader,
T: FromBytes + FromZeroes + AsBytes,
R: Read + ?Sized,
<T as FromReader>::Args<'a>: Default,
{
let mut vec = Vec::with_capacity(count);
if T::STATIC_SIZE != DYNAMIC_SIZE {
// Read the entire buffer at once
let buf = read_bytes(reader, T::STATIC_SIZE * count)?;
let mut slice = buf.as_slice();
for _ in 0..count {
vec.push(T::from_reader(&mut slice)?);
}
} else {
for _ in 0..count {
vec.push(T::from_reader(reader)?);
}
}
Ok(vec)
let mut ret = <T>::new_zeroed();
reader.read_exact(ret.as_bytes_mut())?;
Ok(ret)
}
pub(crate) trait ToWriter: Sized {
fn to_writer<W>(&self, writer: &mut W) -> io::Result<()>
where W: Write + ?Sized;
fn to_bytes(&self) -> io::Result<Vec<u8>> {
let mut buf = vec![0u8; self.write_size()];
self.to_writer(&mut buf.as_mut_slice())?;
Ok(buf)
}
fn write_size(&self) -> usize;
}
macro_rules! impl_to_writer {
($($t:ty),*) => {
$(
impl ToWriter for $t {
fn to_writer<W>(&self, writer: &mut W) -> io::Result<()>
where W: Write + ?Sized {
writer.write_all(&self.to_be_bytes())
}
fn to_bytes(&self) -> io::Result<Vec<u8>> {
Ok(self.to_be_bytes().to_vec())
}
fn write_size(&self) -> usize {
std::mem::size_of::<Self>()
}
}
)*
};
}
impl_to_writer!(u8, u16, u32, u64, u128, i8, i16, i32, i64, i128);
impl ToWriter for U24 {
fn to_writer<W>(&self, writer: &mut W) -> io::Result<()>
where W: Write + ?Sized {
writer.write_all(&self.0.to_be_bytes()[1..])
}
fn write_size(&self) -> usize { 3 }
}
impl<const N: usize> ToWriter for [u8; N] {
fn to_writer<W>(&self, writer: &mut W) -> io::Result<()>
where W: Write + ?Sized {
writer.write_all(self)
}
fn write_size(&self) -> usize { N }
}
impl ToWriter for &[u8] {
fn to_writer<W>(&self, writer: &mut W) -> io::Result<()>
where W: Write + ?Sized {
writer.write_all(self)
}
fn write_size(&self) -> usize { self.len() }
}
impl ToWriter for Vec<u8> {
fn to_writer<W>(&self, writer: &mut W) -> io::Result<()>
where W: Write + ?Sized {
writer.write_all(self)
}
fn write_size(&self) -> usize { self.len() }
}
pub(crate) fn write_vec<T, W>(writer: &mut W, vec: &[T]) -> io::Result<()>
#[inline(always)]
pub fn read_vec<T, R>(reader: &mut R, count: usize) -> io::Result<Vec<T>>
where
T: ToWriter,
W: Write + ?Sized,
T: FromBytes + FromZeroes + AsBytes,
R: Read + ?Sized,
{
for item in vec {
item.to_writer(writer)?;
}
Ok(())
let mut ret = <T>::new_vec_zeroed(count);
reader.read_exact(ret.as_mut_slice().as_bytes_mut())?;
Ok(ret)
}
#[inline(always)]
pub fn read_box_slice<T, R>(reader: &mut R, count: usize) -> io::Result<Box<[T]>>
where
T: FromBytes + FromZeroes + AsBytes,
R: Read + ?Sized,
{
let mut ret = <T>::new_box_slice_zeroed(count);
reader.read_exact(ret.as_mut().as_bytes_mut())?;
Ok(ret)
}
#[inline(always)]
pub fn read_u16_be<R>(reader: &mut R) -> io::Result<u16>
where R: Read + ?Sized {
let mut buf = [0u8; 2];
reader.read_exact(&mut buf)?;
Ok(u16::from_be_bytes(buf))
}
#[inline(always)]
pub fn read_u32_be<R>(reader: &mut R) -> io::Result<u32>
where R: Read + ?Sized {
let mut buf = [0u8; 4];
reader.read_exact(&mut buf)?;
Ok(u32::from_be_bytes(buf))
}
#[inline(always)]
pub fn read_u64_be<R>(reader: &mut R) -> io::Result<u64>
where R: Read + ?Sized {
let mut buf = [0u8; 8];
reader.read_exact(&mut buf)?;
Ok(u64::from_be_bytes(buf))
}