bgebf

Unpack, list and mount Beyond Good and Evil .bf archives.

Basic usage:

bgebf.py list <archive>                 - list contens of .bf archive
bgebf.py unpack <archive>               - extract .bf archive
bgebf.py mount <archive> <mount-point>  - mount archive as read-only file system

The mount command depends on the llfuse Python package. If it's 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

Extracted from the source of bfbs.c which you can get here.

Byte order is little endian and the character encoding seems to be ISO-8859-1. A value of 0xFFFFFFFF for any field denoting an index is a "null pointer". E.g. the root directory has a parent directory index of 0xFFFFFFFF. (It might actually be a signed 32bit integer and the value is -1.)

Header

Offset  Size  Type          Description
     0     4  char[4]       file magic ("BIG\0")
     4     4  uint32_t      always 0x22
     8     4  uint32_t      number of files
    12     4  uint32_t      number of directories
    16     4  uint32_t      always 0x0
    20     4  ?             ?
    24     4  uint32_t      always 0xFFFFFFFF
    28     4  ?             ?
    32     4  uint32_t      offset table size
    36     4  uint32_t      always 0x1
    40     4  uint32_t      always 0x71003ff9
    44     4  uint32_t      number of files (again)
    48     4  uint32_t      number of directories (again)
    52     4  uint32_t      offset table offset (always 68)
    56     4  uint32_t      always 0xFFFFFFFF
    60     4  uint32_t      always 0x0
    64     4  uint32_t      offset table size - 1 (last used offset table index?)

filename_table_offset = offset_table_offset + offset_table_size * 8
dirname_table_offset  = filename_table_offset + offset_table_size * 0x54

Offset Table Entry

Offset  Size  Type           Description
     0     4  uint32_t       file data offset
     4     4  ?              ?

File Name Table Entry

Offset  Size  Type           Description
     0     4  ?              ?
     4     4  uint32_t       next index
     8     4  uint32_t       previous index
    12     4  uint32_t       directory index
    16     4  ?              ?
    20    64  char[64]       file name

Directory Name Table Entry

Offset  Size  Type           Description
     0     4  uint32_t       first file offset
     4     4  uint32_t       (number of?) sub-directories
     8     4  uint32_t       next index
    12     4  uint32_t       previous index
    16     4  uint32_t       parent index
    20    64  char[64]       directory name

File Data Entry

Offset  Size  Type           Description
     0     4  uint32_t       size
     4     4  ?              ?
     8  size  uint8_t[size]  data

Related Projects

fezpak: pack, unpack, list and mount FEZ .pak archives
psypkg: pack, unpack, list and mount Psychonauts .pkg archives
unvpk: extract, list, check and mount Valve .vpk archives
u4pak: unpack, list and mount Unreal Engine 4 .pak archives
t2fbq: unpack, list and mount Trine 2 .fbq 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 / bgebf