Unpack, list and mount Psychonauts .pkg archives. Only the uncompressed version is currently supported, because I only have access to such files with my Steam copy of Psychonauts.
Basic usage:
psypkg.py list <archive> - list contens of .pkg archive
psypkg.py unpack <archive> - extract .pkg archive
psypkg.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).
I used this description of the file format to implement this script. Here follows a summary of the file format.
There are many doubled file names in the PsychonautsData2.pkg file distributed with
Psychonauts for Steam. I guess the later file records are updates on the earlier ones?
For these file entries the second occurance will overwrite the first when unpacking.
When the archive is mounted as a file system name conflict resolution is a bit different.
In this case ~number is added between the file name and the extension. number is the
first number that doesn't produce a confict.
NOTE: I'm not quite sure about the file names. It could very well be that they are
a bit buggy and not exactly the way they should be. For instance without special logic
to prevent this I would extract absolute paths for some reason (like lipsync/thaj000ht.pba),
and some names looks like they are missing a letter at the start (uckerfish -> suckerfish?
quirrel -> Squirrel?). Maybe someone can find out the problem in my code?
┌────────────────────────────────┐
│ │
│ Header │
│ │
│ file magic ("ZPKG") │
│ version │
│ file data offset │
│ number of files │
│ unknown data offset │
│ ? │
│ name directory offset │
│ file type directory offset │
│ zero-padding │
│ │
├────────────────────────────────┤
│ │
│ File Records │
│ │
│ ┌────────────────────────────┐ │
│ │ │ │
│ │ Record │ │
│ │ │ │
│ │ null │ │
│ │ file type offset │ │
│ │ null │ │
│ │ file name offset │ │
│ │ file data offset │ │
│ │ file data size │ │
│ │ │ │
│ └────────────────────────────┘ │
│ │
│ ... │
│ │
├────────────────────────────────┤
│ │
│ ??? │
│ │
├────────────────────────────────┤
│ │
│ Name Directory │
│ │
├────────────────────────────────┤
│ │
│ File Type Directory │
│ │
├────────────────────────────────┤
│ │
│ File Data │
│ │
└────────────────────────────────┘
ZSTR is a zero-terminated string. All values are encoded in little endian byte order.
Size Type Description
512 Header archive header
16*N Record[N] file records
? ? unknown data
? ZSTR[*] name directory: sequence of zero-terminated strings
? ZSTR[*] file type directory: sequence of zero-terminated strings
? uint8_t[*] file data
Offset Size Type Description
0 4 char[4] file magic ("ZPKG")
4 4 uint32_t version (1)
8 4 uint32_t file data offset
12 4 uint32_t number of files
16 4 uint32_t directory records offset
20 4 uint32_t number od directory records
24 4 uint32_t name directory offset
28 4 uint32_t file type directory offset
32 480 uint8_t[480] zero-padding (maybe reversed for use in version >1?)
Offset Size Type Description
0 1 uint8_t null (0)
1 2 uint16_t file type offset (relative to file type direectory offset)
3 1 uint8_t null (0)
4 4 uint32_t file name offset (relative to name direectory offset)
8 4 uint32_t file data offset
12 4 uint32_t file data size
Offset Size Type Description
0 1 char one character of a directory name
1 1 uint8_t null (0)
2 2 uint16_t ?
4 2 uint16_t ?
6 2 uint16_t record id (incremental from 1)
8 2 uint16_t start file index (inclusive)
10 2 uint16_t end file index (exclusive)
- fezpak: pack, unpack, list and mount FEZ .pak archives
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Copyright (c) 2014 Mathias Panzenböck
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.