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fix(pkg): write firmware-compatible debug packages #8

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Merged
ZephyrCodesStuff merged 1 commit into from
Aug 23, 2026
Merged

fix(pkg): write firmware-compatible debug packages #8

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27 changes: 25 additions & 2 deletions hdk-firmware/src/pkg/reader.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -154,11 +154,34 @@ impl<R: Read + Seek> PkgArchive<R> {
return Err(PkgError::DataOutOfBounds);
}

// ---- metadata section (TLV packets) ----
let mut metadata = PkgMetadata {
packets: Vec::new(),
};
if metadata_offset > 0 && metadata_count > 0 {
let is_legacy_debug = release_type & 0x8000 == 0
&& metadata_offset == 0xC0
&& metadata_size == 0x80
&& data_offset == 0x140;

if is_legacy_debug {
inner.seek(SeekFrom::Start(metadata_offset as u64))?;
let mut fixed = [0u8; 0x40];
inner.read_exact(&mut fixed)?;

let packet = |id, range: std::ops::Range<usize>| PkgMetadataPacket {
id,
data: fixed[range].to_vec(),
};
metadata.packets.extend([
packet(metadata_id::DRM_TYPE, 0x08..0x0C),
packet(metadata_id::CONTENT_TYPE, 0x14..0x18),
packet(metadata_id::PACKAGE_TYPE, 0x20..0x24),
PkgMetadataPacket {
id: metadata_id::PACKAGE_SIZE,
data: total_size.to_be_bytes().to_vec(),
},
packet(metadata_id::MAKE_PKG_REV, 0x3C..0x40),
]);
} else if metadata_offset > 0 && metadata_count > 0 {
inner.seek(SeekFrom::Start(metadata_offset as u64))?;
for _ in 0..metadata_count {
let id = inner.read_u32::<BigEndian>()?;
Expand Down
16 changes: 8 additions & 8 deletions hdk-firmware/src/pkg/structs.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -2,13 +2,13 @@
//!
//! A PS3 `.pkg` file has the following high-level layout:
//!
//! | Region | Offset | Notes |
//! |------------------|-----------------|------------------------------------|
//! | Main header | `0x00`–`0xBF` | Always plaintext |
//! | Metadata (TLV) | `0xC0`–variable | Always plaintext, id/size/payload |
//! | File entry table | `data_offset` | Encrypted for retail, plain debug |
//! | File names | (relative) | Encrypted for retail, plain debug |
//! | File data | (relative) | Encrypted for retail, plain debug |
//! | Region | Offset | Notes |
//! |------------------|-----------------|--------------------------------------------|
//! | Main header | `0x00`–`0xBF` | Header plus mode-specific authentication |
//! | Metadata | `0xC0`–variable | Fixed record for debug, TLV for retail |
//! | File entry table | `data_offset` | SHA-1 stream (debug) or AES-CTR (retail) |
//! | File names | (relative) | Encrypted with the selected package mode |
//! | File data | (relative) | Encrypted with the selected package mode |

use core::fmt;

Expand Down Expand Up @@ -232,7 +232,7 @@ impl TryFrom<u32> for PkgEntryType {
/// 0x30 [u8;48] content_id (null-padded ASCII)
/// 0x60 [u8;16] qa_digest (SHA-1 key material for debug crypto)
/// 0x70 [u8;16] klicensee (AES-CTR initial counter)
/// 0x80 [u8;64] header_digest
/// 0x80 [u8;64] mode-specific header authentication
/// ```
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct PkgHeader {
Expand Down
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