t2fbq

Unpack, list and mount Trine 2 .fbq archives.

Basic usage:

t2fbq.py list <archive>                              - list contens of .fbq archive
t2fbq.py unpack <archive>                            - extract .fbq archive
t2fbq.py mount <archive> [archive]... <mount-point>  - mount archive as read-only file system

The mount command depends on the llfuse Python package and the unpack and mount commands depend on the lzf Python package. If these packages are not available the rest is still working.

This script is compatible with Python 2.7 and 3 (tested with 2.7.5 and 3.3.2).

File Format

Byte order is little endian and the character encoding of file names seems to be ASCII (or ISO-8859-1/UTF-8 that coincidentally only uses ASCII compatiple characters).

Data might be compressed using the LZF compression algorithm. I got the information about the compression algorithm and uncompressed size Vs. compressed size fields from QuickBMS: http://aluigi.altervista.org/papers/bms/trine2.bms

Basic layout:

File Header
Index Records
Data Records

File Header

Offset  Size  Type      Description
     0     4  uint32_t  version (2)
     4     4  uint32_t  number of entries
     8     4  uint32_t  size of index

Index Record

Offset  Size  Type      Description
     0     N  char[N]   null terminated absolute file name ('/' is path separator)
     N     4  uint32_t  data offset relative to end of index
   N+4     1  bool      not compressed flag (1 if data is not compressed, 0 if compressed)
   N+5     4  uint32_t  uncompressed size
   N+9     4  uint32_t  compressed size
  N+13     4  uint32_t  chceksum of unknown algorithm?

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bgebf: unpack, list and mount Beyond Good and Evil .bf archives
unvpk: extract, list, check and mount Valve .vpk archives
u4pak: unpack, list and mount Unreal Engine 4 .pak archives

BSD License

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

panzi / t2fbq