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Add support to decompress files in paz file

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lifegpc
2025-11-03 11:20:49 +08:00
parent f363a8a24a
commit 9da81ddfaa
2 changed files with 24 additions and 1 deletions
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23
src/scripts/musica/archive/paz.rs
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@@ -8,6 +8,7 @@ use crate::utils::serde_base64bytes::Base64Bytes;
use crate::utils::struct_pack::*;
use crate::utils::xored_stream::*;
use anyhow::Result;
use flate2::read::ZlibDecoder;
use msg_tool_macro::{StructPack, StructUnpack};
use serde::Deserialize;
use std::collections::{BTreeMap, HashMap};
@@ -192,6 +193,12 @@ struct PazEntry {
flags: u32,
}
impl PazEntry {
pub fn is_compressed(&self) -> bool {
(self.flags & 0x1) != 0
}
}
#[derive(Debug)]
pub struct PazArc {
stream: Arc<Mutex<MultipleReadStream>>,
@@ -386,13 +393,25 @@ impl Script for PazArc {
rc4.skip_bytes(skip as usize);
}
let stream = Rc4Stream::new(stream, rc4);
if entry.is_compressed() {
let stream = ZlibDecoder::new(stream);
return Ok(Box::new(PazFileEntry::new(entry, stream)));
}
return Ok(Box::new(PazFileEntry::new(entry, stream)));
}
}
if entry.is_compressed() {
let stream = ZlibDecoder::new(stream);
return Ok(Box::new(PazFileEntry::new(entry, stream)));
}
return Ok(Box::new(PazFileEntry::new(entry, stream)));
} else if let Some(mov_key) = &self.mov_key {
if self.schema.version < 1 {
let stream = TableEncryptedStream::new(stream, mov_key.clone())?;
if entry.is_compressed() {
let stream = ZlibDecoder::new(stream);
return Ok(Box::new(PazFileEntry::new(entry, stream)));
}
return Ok(Box::new(PazFileEntry::new(entry, stream)));
}
let type_key = self
@@ -416,6 +435,10 @@ impl Script for PazArc {
let mut rc4 = Rc4::new(&rkey);
let key_block = rc4.generate_block((entry.size as usize).min(0x10000));
let stream = XoredKeyStream::new(stream, key_block, 0);
if entry.is_compressed() {
let stream = ZlibDecoder::new(stream);
return Ok(Box::new(PazFileEntry::new(entry, stream)));
}
return Ok(Box::new(PazFileEntry::new(entry, stream)));
}
Err(anyhow::anyhow!("Data decryption key not found."))