From b867d6891ab9164a4e24ef40e9131a5894f6b136 Mon Sep 17 00:00:00 2001
From: dpethes <dejvu@email.cz>
Date: Sun, 25 Jan 2015 17:03:47 +0100
Subject: [PATCH] add bundle unpacker

---
 bundle_pack/Cargo.lock  |   4 ++
 bundle_pack/Cargo.toml  |   5 ++
 bundle_pack/src/main.rs | 102 ++++++++++++++++++++++++++++++++++++++++
 3 files changed, 111 insertions(+)
 create mode 100644 bundle_pack/Cargo.lock
 create mode 100644 bundle_pack/Cargo.toml
 create mode 100644 bundle_pack/src/main.rs

diff --git a/bundle_pack/Cargo.lock b/bundle_pack/Cargo.lock
new file mode 100644
index 0000000..a2fc779
--- /dev/null
+++ b/bundle_pack/Cargo.lock
@@ -0,0 +1,4 @@
+[root]
+name = "bundle_pack"
+version = "0.0.1"
+
diff --git a/bundle_pack/Cargo.toml b/bundle_pack/Cargo.toml
new file mode 100644
index 0000000..227bcb4
--- /dev/null
+++ b/bundle_pack/Cargo.toml
@@ -0,0 +1,5 @@
+[package]
+
+name = "bundle_pack"
+version = "0.0.1"
+authors = ["dpethes <dejvu@email.cz>"]
diff --git a/bundle_pack/src/main.rs b/bundle_pack/src/main.rs
new file mode 100644
index 0000000..0ed7e82
--- /dev/null
+++ b/bundle_pack/src/main.rs
@@ -0,0 +1,102 @@
+#![allow(unstable)]
+extern crate core;
+extern crate collections;
+
+use std::io::File;
+use std::os;
+use collections::string::String;
+
+
+struct FileEntry {
+    filename: String,
+    length: u32,
+    offset: u32
+}
+
+fn unpack_bundle(fpath: &Path) {
+    // check file magic
+    let mut f = File::open(fpath).unwrap();
+    let mut magic = String::new();
+    for i in 0..4 {
+        let c:u8 = f.read_u8().unwrap();
+        magic.push(c as char);
+    }
+    println!("Magic: {}", magic);
+
+    // file data size (= filesize - 8)
+    let asize = f.read_be_u32().unwrap();
+    println!("Archive size: {}", asize);
+
+    // bundle header
+    let mut bheader = String::new();
+    for i in 0..4 {
+        let c:u8 = f.read_u8().unwrap();
+        bheader.push(c as char);
+    }
+    let bsize = f.read_be_u32().unwrap();
+    println!("Bundle header: {}  size: {}", bheader, bsize);
+
+    // skip padding
+    f.seek(65570, std::io::SeekStyle::SeekCur);
+
+    // read file entries
+    let file_entries = (bsize - 65570) / 252;
+    println!("File entries: {}", file_entries);
+
+    let mut files = Vec::new();
+    for i in 0..file_entries {
+        let mut fname = String::new();
+        let input_fname = f.read_exact(200).unwrap();
+        for byte in input_fname.iter() {
+            let c = byte ^ 0xAA;
+            if c == 0 {
+                break;
+            }
+            fname.push(c as char);
+        }
+        let fsize = f.read_le_u32().unwrap();
+        let foffset = f.read_le_u32().unwrap();
+        println!("File name: {} offset: {} size: {}", fname, foffset, fsize);
+        f.read_exact(44).unwrap();
+
+        let file = FileEntry {filename: fname, length: fsize, offset: foffset};
+        files.push(file);
+    }
+
+    // bundle data
+    let mut bdata = String::new();
+    for i in 0..4 {
+        let c:u8 = f.read_u8().unwrap();
+        bdata.push(c as char);
+    }
+    let bdata_size = f.read_be_u32().unwrap();
+    println!("Bundle data: {} size: {}", bdata, bdata_size);
+
+    // unpack files
+    let base_pos = f.tell().unwrap();
+    for file in files.iter() {
+        let mut split = file.filename.split_str("\\");
+        let vec: Vec<&str> = split.collect();
+        let last  = vec[vec.len() - 1];
+        println!("File name: {} offset: {} size: {}", last, file.offset, file.length);
+
+        let fpos = base_pos + file.offset as u64;
+        f.seek((fpos as i64), std::io::SeekStyle::SeekSet);
+        let databytes = f.read_exact(file.length as usize).unwrap();
+        let mut fdest = File::create(&Path::new(last));
+        fdest.write(databytes.as_slice());
+    }
+}
+
+fn main() {
+    let args = os::args();
+    if args.len() < 2 {
+        println!("No input specified!");  //first param = path
+        unpack_bundle(&Path::new("BUNDLE.000"));  //debug - remove
+    } else {
+        println!("Trying to parse file {0}", args[1]);
+        let ref fpath = args[1];
+        unpack_bundle(&Path::new(fpath));
+    }
+    print!("Done.");
+}