How to read .Contact files? - mobile

I will explain the situation first. We know we can send the contacts in our phone via bluetooth to other devices. Usually they will be sent as ".contact" files. In windows these files will be saved in c:/users/userName/contacts folder. In my Java program (which runs in PC), I would like to read these files. Is there any specific library to read these files? Specially libraries which are not outdated for decades? Please help!

Okay, rephrasing comments as an answer, as requested.
The .contact file you're seeing is most likely Microsoft specific, and you should look for some other format, such as vCard instead! You might also find the bluetooth software at bluecove.org interesting.

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Decompressing .lz file

Curiosity is one of my personal keys. I got a folder of an executable c application, this folder include many files some are files.so , files.ini and other files.lz and I decided to try do some kind of reverse engineering, so I have used a reverse engineering online tool for the files.so and files.ini are already opened via notepad as we all know, but now my problem is about opening files.lz, which i already know that it contains libraries to be used for functions on files.so
This is what i want to know and to have some help in it how can I decompress it via a desktop tool or even an online tool?
Should be Lzip.
When you are in the linux-world, one very usefull commands is file:
$ file myFile.lz
myFile.lz: lzip compressed data, version: 1

How Can I View/Open This File?

i am trying to open and edit a file that contains some type of custom protection.
file game :gameguard.des
its from lineage2/interlude/system file.
this is not the original version though, it has been modified to block some packets sent to the server.
i've used VS2010 to open it and it shows me the memory and the contents in hex, like viewing computer memory.
here is the file attached. http://www20.zippyshare.com/v/88173717/file.html
so my question is, how can i open it viewing the code in a higher level and edit it? what tools i need to use to do that?
regards, George
This is a Win32 program. You can try to disassemble it, but it's itself a binary file and what the VS2010 is showing you is correct, because it's showing it most probably in HEX format to you.
You need to first figure out which compiler was used to compile this application, then maybe it helps you to refactor the executable.
The fact that you can not directly run this application might be just the extension, maybe if you change the extension to .exe, it runs under windows. I don't recommend it though.

Grabbing windows file information

In C following this article (http://blogs.msdn.com/oldnewthing/archive/2006/12/21/1340571.aspx), we have succesfully been able to grab the file version information out of windows files however there are some files that seem to have a different mechanism for storing the version information that is not addressed in the article and was wondering if anyone had any ideas here.
One example of a file would be system32/oledlg.dll. Going through the file byte by byte we come to a chunk where the version information SHOULD be stored:
F^#i^#l^#e^#V^#e^#r^#s^#i^#o^#n^#^#^#^#^1.0 (x^#p^#s^#p^#.^#0^#8^#0^#4^#1^#3
^#-^#2^#1^#0^#8^#)^#^#^#^#^#.^#^G^#^A^#I^#n^#t^#e^#r^#n^#a^#l^#N^#a^#m^#e
That we can see is 1.0. However, when you look at the file information in windows the version is actually 5.1.2600.5512. The method in the article works for most files but there are a few instances I have come across where I am running into the above problem. Anyone have any experience with this? I only have access to standard C.
Based on the follow up article posted in the comment, does that mean there is no way to grab the actual file version from a file with a corrupted file info block?
I should also add that I am grabbing the files from a windows box, and then examining them on linux with a C program to grab the file info.
IT turns out the wrong peice of info for that file was being used to get the version, didn't actually need the File Version block but the "VS_VERSION_INFO" block.

Find out which DBMS belongs the file

I've an application, that uses encrypted (txt) files to store data. After investigating the decompiled assembly I concluded that it's a file of some DBMS. So how can find out which DBMS is this application using to store it's data, so that I can attach that file to the correct DBMS.
This is little application and there is no license problem. I can just ask the owner to gimme the data, but just curious to solve this myself.
MORE INFO:
Platform is Windows, and after trying couple of decompilers I concluded that it WAS written in Visual C++. However I couldn't fully decompile this exe, otherwise I just could find out it from the source code.
A couple ideas.
If opening the file in a HEX editor doesn't give you any information (like a magic identifier at the start of the file, which you can pop into google, then:
Use the depends tool from microsoft to grab a list of the DLLs being loaded by the application. Chances are whatever DBMS it's using is contained in an external library.
If the first two suggestions yield nothing, load the executable into IDA pro freeware and have a look at the code which is creating these files.

Database query representation impersonating file on Windows share?

Is there any way to have something that looks just like a file on a Windows file share, but is really a resource served up over HTTP?
For context, I'm working with an old app that can only deal with files on a Windows file share, I want to create a simple HTTP-based service to serve the content of the files dynamically to pick up real time changes to the underlying data on request.
WebDAV (basically) takes an existing directory, and shares it over HTTP - which sounds like the opposite of what you want.
You need something that speaks SMB/CIFS on one end, and your own code on the other. The easiest way to do that is with a userspace file system.
To that end, here's a couple of links:
WinFUSE, which is kind of a barebones CIFS/SMB server that can host your own filesystem. I've done a couple of small samples with it - and the docs are terrible, but it more or less worked.
Dokan, a userspace file driver with .NET bindings. I haven't used this one, but it looks promising. It has both .NET and Ruby bindings, so you should be able to get a POC up pretty quickly.
Callback File System - yet another userspace file system. Again, I have no experience with this one.
A Linux box with SAMBA and FUSE that shares the drive out to the Windows box.
This won't answer your question in any meaningful way, but maybe it will get you pointed in the right direction. Look into serving the "file(s)" via WebDAV--SharePoint uses this and its files can be accessed exactly as you want, as a file share where the transport mechanism is HTTP. Unfortunately I can't give any more detailed info, as I've only worked on the client end of WebDAV and not the server side of things.
I think serving up files from WebDAV might be what you're looking for.

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