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feat: exfat content extraction

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jujuforce
2025-07-16 15:12:32 +02:00
parent 252ea9c797
commit 53c389ba05
3 changed files with 293 additions and 3 deletions
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Cargo.lock
Generated
+240 -1
View File
@@ -1,6 +1,6 @@
# This file is automatically @generated by Cargo.
# It is not intended for manual editing.
version = 3
version = 4
[[package]]
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@@ -19,6 +19,21 @@ version = "1.0.86"
source = "registry+https://github.com/rust-lang/crates.io-index"
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@@ -28,6 +43,26 @@ dependencies = [
"generic-array",
]
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@@ -43,6 +78,15 @@ version = "1.0.0"
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@@ -94,12 +138,130 @@ dependencies = [
"typenum",
]
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dependencies = [
"proc-macro2",
"quote",
"syn",
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name = "exfat-fs"
version = "0.1.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
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"derive_builder",
"endify",
"enumeric",
"thiserror",
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@@ -108,6 +270,7 @@ dependencies = [
"anyhow",
"cbc",
"crc32fast",
"exfat-fs",
"hex-literal",
"indicatif",
]
@@ -128,6 +291,12 @@ version = "0.4.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
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@@ -172,6 +341,15 @@ version = "0.2.155"
source = "registry+https://github.com/rust-lang/crates.io-index"
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Cargo.toml
+1
View File
@@ -10,3 +10,4 @@ cbc = "0.1.2"
crc32fast = "1.4.2"
hex-literal = "0.4.1"
indicatif = "0.17.8"
exfat-fs = "0.1.3"
src/main.rs
+52 -2
View File
@@ -1,9 +1,11 @@
use std::{
fs::File,
fs::{File, create_dir_all},
io::{BufReader, BufWriter, Read, Seek, SeekFrom, Write},
path::Path,
};
use exfat_fs::dir::{Root, entry::fs::FsElement};
use aes::{
cipher::{block_padding::NoPadding, BlockDecryptMut, InnerIvInit, KeyInit, KeyIvInit},
Aes128Dec,
@@ -21,6 +23,44 @@ mod crypto;
const PAGE_SIZE: u64 = 4096;
fn extract_exfat_contents(exfat_path: &Path) -> Result<()> {
println!("Extracting contents of {}", exfat_path.display());
let file = File::open(exfat_path)?;
let mut root = Root::open(file)?;
// Create output directory with same name as exfat file (without extension)
let output_dir = exfat_path.with_extension("");
create_dir_all(&output_dir)?;
extract_fs_elements(root.items(), &output_dir)?;
Ok(())
}
fn extract_fs_elements(elements: &mut [FsElement<File>], output_dir: &Path) -> Result<()> {
let item_count = elements.len();
for i in 0..item_count {
if let Some(FsElement::F(ref mut file_ref)) = elements.get_mut(i) {
// Extract file
let filename = file_ref.name().to_owned();
let file_path = output_dir.join(&filename);
let mut buffer = Vec::new();
file_ref.read_to_end(&mut buffer)?;
std::fs::write(file_path, buffer)?;
} else if let Some(FsElement::D(ref dir_ref)) = elements.get(i) {
// Handle directory
let dirname = dir_ref.name();
let dir_path = output_dir.join(dirname);
create_dir_all(&dir_path)?;
let mut children = dir_ref.open()?;
// Extract children recursively
extract_fs_elements(&mut children, &dir_path)?;
}
}
Ok(())
}
fn main() -> Result<()> {
let args = std::env::args().collect::<Vec<String>>();
@@ -160,7 +200,7 @@ fn main() -> Result<()> {
.template("{prefix} [{bar:20!.bright.yellow/dim.white}] {bytes:>8} [{elapsed}<{eta}, {bytes_per_sec}]")?
);
pb.set_prefix(output_filename);
pb.set_prefix(output_filename.clone());
reader.seek(SeekFrom::Start(data_offset))?;
for _ in 0..output_size / PAGE_SIZE {
@@ -184,6 +224,16 @@ fn main() -> Result<()> {
writer.flush()?;
pb.finish();
// Extract exfat contents if this is an exfat file
if bootid.container_type == ContainerType::OPTION && output_path.extension().unwrap_or_default() == "exfat" {
if let Err(e) = extract_exfat_contents(&output_path) {
println!("WARNING: Failed to extract exfat contents: {e}");
}
println!("Extracted exfat contents: {}", output_path.display());
println!("Deleting exfat file: {}", output_path.display());
std::fs::remove_file(output_path)?;
}
page.clear();
page_iv.fill(0);
bootid_bytes.fill(0);