Extract Wii region.bin

Cargo.lock

@@ -441,7 +441,7 @@ dependencies = [
 
 [[package]]
 name = "nod"
-version = "1.4.1"
+version = "1.4.2"
 dependencies = [
  "adler",
  "aes",
@@ -464,7 +464,7 @@ dependencies = [
 
 [[package]]
 name = "nodtool"
-version = "1.4.1"
+version = "1.4.2"
 dependencies = [
  "argp",
  "base16ct",
@@ -1033,18 +1033,18 @@ checksum = "6a5cbf750400958819fb6178eaa83bee5cd9c29a26a40cc241df8c70fdd46984"
 
 [[package]]
 name = "zerocopy"
-version = "0.8.0"
+version = "0.8.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "df7885ffcb82507a0f213c593e77c5f13d12cb96588d4e835ad7e9423ba034db"
+checksum = "dd2e5ce961dea177d282ec084dca2aa411b7411199a68d79eb1beacb305a6cd9"
 dependencies = [
  "zerocopy-derive",
 ]
 
 [[package]]
 name = "zerocopy-derive"
-version = "0.8.0"
+version = "0.8.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "930ad75608219e8ffdb8962a5433cb2b30064c7ccb564d3b76c2963390b1e435"
+checksum = "b06304eeddb6081af98ac59db08c868ac197e586086b996d15a86ed70e09a754"
 dependencies = [
  "proc-macro2",
  "quote",

Cargo.toml

@@ -9,7 +9,7 @@ strip = "debuginfo"
 codegen-units = 1
 
 [workspace.package]
-version = "1.4.1"
+version = "1.4.2"
 edition = "2021"
 rust-version = "1.74"
 authors = ["Luke Street <luke@street.dev>"]

nod/src/disc/gcn.rs

@@ -214,6 +214,7 @@ pub(crate) fn read_part_meta(
         raw_apploader: raw_apploader.into_boxed_slice(),
         raw_fst,
         raw_dol: raw_dol.into_boxed_slice(),
+        raw_region: None,
         raw_ticket: None,
         raw_tmd: None,
         raw_cert_chain: None,

nod/src/disc/mod.rs

@@ -24,7 +24,7 @@ pub(crate) mod wii;
 
 pub use fst::{Fst, Node, NodeKind};
 pub use streams::{FileStream, OwnedFileStream, WindowedStream};
-pub use wii::{SignedHeader, Ticket, TicketLimit, TmdHeader};
+pub use wii::{SignedHeader, Ticket, TicketLimit, TmdHeader, REGION_SIZE};
 
 /// Size in bytes of a disc sector.
 pub const SECTOR_SIZE: usize = 0x8000;
@@ -365,6 +365,8 @@ pub struct PartitionMeta {
     pub raw_fst: Box<[u8]>,
     /// Main binary (main.dol)
     pub raw_dol: Box<[u8]>,
+    /// Disc region info (region.bin, Wii only)
+    pub raw_region: Option<Box<[u8; REGION_SIZE]>>,
     /// Ticket (ticket.bin, Wii only)
     pub raw_ticket: Option<Box<[u8]>>,
     /// TMD (tmd.bin, Wii only)

nod/src/disc/wii.rs

@@ -21,7 +21,10 @@ use crate::{
         KeyBytes,
     },
     static_assert,
-    util::{div_rem, read::read_box_slice},
+    util::{
+        div_rem,
+        read::{read_box, read_box_slice},
+    },
     Error, OpenOptions, Result, ResultContext,
 };
 
@@ -31,6 +34,12 @@ pub(crate) const HASHES_SIZE: usize = 0x400;
 /// Size in bytes of the data block in a Wii disc sector (excluding hashes)
 pub(crate) const SECTOR_DATA_SIZE: usize = SECTOR_SIZE - HASHES_SIZE; // 0x7C00
 
+/// Size of the disc region info (region.bin)
+pub const REGION_SIZE: usize = 0x20;
+
+/// Offset of the disc region info
+pub const REGION_OFFSET: u64 = 0x4E000;
+
 // ppki (Retail)
 const RVL_CERT_ISSUER_PPKI_TICKET: &str = "Root-CA00000001-XS00000003";
 #[rustfmt::skip]
@@ -270,6 +279,7 @@ pub struct PartitionWii {
     sector: u32,
     pos: u64,
     verify: bool,
+    raw_region: Box<[u8; REGION_SIZE]>,
     raw_tmd: Box<[u8]>,
     raw_cert_chain: Box<[u8]>,
     raw_h3_table: Box<[u8]>,
@@ -287,6 +297,7 @@ impl Clone for PartitionWii {
             sector: u32::MAX,
             pos: 0,
             verify: self.verify,
+            raw_region: self.raw_region.clone(),
             raw_tmd: self.raw_tmd.clone(),
             raw_cert_chain: self.raw_cert_chain.clone(),
             raw_h3_table: self.raw_h3_table.clone(),
@@ -304,6 +315,10 @@ impl PartitionWii {
         let block_size = inner.block_size();
         let mut reader = PartitionGC::new(inner, disc_header)?;
 
+        // Read region
+        reader.seek(SeekFrom::Start(REGION_OFFSET)).context("Seeking to region offset")?;
+        let raw_region: Box<[u8; REGION_SIZE]> = read_box(&mut reader).context("Reading region")?;
+
         // Read TMD, cert chain, and H3 table
         let offset = partition.start_sector as u64 * SECTOR_SIZE as u64;
         reader
@@ -333,6 +348,7 @@ impl PartitionWii {
             sector: u32::MAX,
             pos: 0,
             verify: options.validate_hashes,
+            raw_region,
             raw_tmd,
             raw_cert_chain,
             raw_h3_table,
@@ -482,6 +498,7 @@ impl PartitionBase for PartitionWii {
     fn meta(&mut self) -> Result<Box<PartitionMeta>> {
         self.seek(SeekFrom::Start(0)).context("Seeking to partition header")?;
         let mut meta = read_part_meta(self, true)?;
+        meta.raw_region = Some(self.raw_region.clone());
         meta.raw_ticket = Some(Box::from(self.partition.header.ticket.as_bytes()));
         meta.raw_tmd = Some(self.raw_tmd.clone());
         meta.raw_cert_chain = Some(self.raw_cert_chain.clone());

nodtool/src/cmd/extract.rs

@@ -152,6 +152,8 @@ fn extract_sys_files(
         fs::create_dir_all(&disc_dir)
             .with_context(|| format!("Creating directory {}", display(&disc_dir)))?;
         extract_file(&header.as_bytes()[..0x100], &disc_dir.join("header.bin"), quiet)?;
+        if let Some(region) = data.raw_region.as_deref() {
+            extract_file(region, &disc_dir.join("region.bin"), quiet)?;
         }
         if let Some(ticket) = data.raw_ticket.as_deref() {
             extract_file(ticket, &out_dir.join("ticket.bin"), quiet)?;
@@ -165,6 +167,7 @@ fn extract_sys_files(
         if let Some(h3_table) = data.raw_h3_table.as_deref() {
             extract_file(h3_table, &out_dir.join("h3.bin"), quiet)?;
         }
+    }
     Ok(())
 }