thegame_1980/unixtract
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general: move common to utils, move common compression function to utils, clean up inconsitencies + add missing header to sony_bdp

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theubusu
2025-11-26 17:29:25 +01:00
parent 82be46fbd6
commit b608888538
32 changed files with 92 additions and 111 deletions
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src/formats/pana_dvd.rs
+9 -26
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@@ -2,15 +2,14 @@ use std::fs::File;
use std::path::Path;
use std::fs::{self, OpenOptions};
use std::io::{Write, Read, Cursor, Seek, SeekFrom};
use simd_adler32::adler32;
use flate2::read::GzDecoder;
use binrw::{BinRead, BinReaderExt};
use crate::keys;
use crate::common;
use crate::utils::common;
use crate::utils::pana_dvd_crypto::{decrypt_data};
use crate::utils::aes::{decrypt_aes128_cbc_nopad};
use crate::utils::compression::{decompress_gzip};
use crate::utils::lzss::{decompress_lzss};
#[derive(BinRead)]
@@ -95,10 +94,7 @@ impl MainEntryHeader {
pub fn find_key<'a>(key_array: &'a [&'a str], data: &[u8], expected_magic: &[u8]) -> Result<Option<[u8; 8]>, Box<dyn std::error::Error>> {
for key_hex in key_array {
let key_bytes = hex::decode(key_hex)?;
let key_array: [u8; 8] = match key_bytes.as_slice().try_into() {
Ok(k) => k,
Err(_) => continue,
};
let key_array: [u8; 8] = key_bytes.as_slice().try_into()?;
let decrypted = decrypt_data(data, &key_array);
if decrypted.starts_with(expected_magic) {
@@ -111,18 +107,12 @@ pub fn find_key<'a>(key_array: &'a [&'a str], data: &[u8], expected_magic: &[u8]
pub fn find_aes_key_pair<'a>(key_array: &'a [(&'a str, &'a str)], data: &[u8], expected_magic: &[u8], magic_offset: usize) -> Result<Option<([u8; 16], [u8; 8])>, Box<dyn std::error::Error>> {
for (aes_key_hex, cust_key_hex) in key_array {
let aes_key_bytes = hex::decode(aes_key_hex)?;
let aes_key_array: [u8; 16] = match aes_key_bytes.as_slice().try_into() {
Ok(k) => k,
Err(_) => continue,
};
let iv = b"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00";
let aes_decrypted = decrypt_aes128_cbc_nopad(data, &aes_key_array, iv)?;
let aes_key_array: [u8; 16] = aes_key_bytes.as_slice().try_into()?;
let iv: [u8; 16] = [0x00; 16];
let aes_decrypted = decrypt_aes128_cbc_nopad(data, &aes_key_array, &iv)?;
let key_bytes = hex::decode(cust_key_hex)?;
let key_array: [u8; 8] = match key_bytes.as_slice().try_into() {
Ok(k) => k,
Err(_) => continue,
};
let key_array: [u8; 8] = key_bytes.as_slice().try_into()?;
let decrypted = decrypt_data(&aes_decrypted, &key_array);
if decrypted[magic_offset..].starts_with(expected_magic) {
@@ -146,13 +136,6 @@ pub fn is_pana_dvd_file(mut file: &File) -> bool {
}
}
fn decompress_gzip(data: &[u8]) -> std::io::Result<Vec<u8>> {
let mut decoder = GzDecoder::new(data);
let mut decompressed = Vec::new();
decoder.read_to_end(&mut decompressed)?;
Ok(decompressed)
}
pub fn extract_pana_dvd(mut file: &File, output_folder: &str) -> Result<(), Box<dyn std::error::Error>> {
let init_pos = file.stream_position()?;
file.seek(SeekFrom::Start(0))?;
@@ -175,10 +158,10 @@ pub fn extract_pana_dvd(mut file: &File, output_folder: &str) -> Result<(), Box<
} else if let Some((aes_key_array, key_array)) = find_aes_key_pair(&keys::PANA_DVD_AESPAIR, &enc_header, b"PROG", 96)? {
println!("Found AES key pair: aes={} cust={}", hex::encode_upper(aes_key_array), hex::encode_upper(key_array));
matching_key = Some(key_array);
let iv = b"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00";
let iv: [u8; 16] = [0x00; 16];
println!("Decrypting AES...\n");
let aes_decrypted = decrypt_aes128_cbc_nopad(&file_reader.get_ref()[48..], &aes_key_array, iv)?;
let aes_decrypted = decrypt_aes128_cbc_nopad(&file_reader.get_ref()[48..], &aes_key_array, &iv)?;
file_reader = Cursor::new(aes_decrypted); //set the file reader to use AES decrypted stream
file_reader.seek(SeekFrom::Start(48))?;