NewLC - How to share a file between 2 applications. - Comments

Re: How to share a file between 2 applications.

alh — Wed, 23 May 2007 15:49:01 +0200

Note though that correct behavior might be "Display dialog "file not found", then exit application when user press "ok"".

As long as your application doesn't crash or leak resources or anything like that when the file is not there, it is ok.

Re: How to share a file between 2 applications.

puterman — Wed, 23 May 2007 14:37:09 +0200

Input data should always be checked, ie. your app shouldn't misbehave just because your data files have been altered or removed.

I'm quite certain that this sort of error won't be discovered in Symbian Signed testing, though. But test methodology isn't dictated by the Symbian Signed criteria, so there are no guarantees.

Re: How to share a file between 2 applications.

abel.campos — Wed, 23 May 2007 12:50:17 +0200

Thank you.
My fear is about test PKG-02. If somebody deletes or modifies the files of my application stored in \data\others, my app won't work properly, and the PKG-02 test will fail.
I don't know how much strict is the SymbianSigned Certificate.

Re: How to share a file between 2 applications.

eric — Wed, 23 May 2007 12:12:39 +0200

Quote

I read in www.symbiansigned.com, in TOOL1 section that anyone could access "public" folders with a file browser and move, copy or delete the files of my application.

And that's true Only writing into a private directories can make your application have safe data (or at least almost safe).

Quote

But checking again the tests I have to pass to get Symbian Signed Certificate I notice that it's not forbidden to create "free access" files... I hope.

You can create files almost anywhere on the free accessible file system. Symbian Signed only requires that:
- you don't do so if the file system has almost no space left
- you clean up everything correctly when your application is uninstalled.

Re: How to share a file between 2 applications.

abel.campos — Mon, 21 May 2007 18:24:32 +0200

Thank you.
The data in the file are sensitive for my program.

I read in www.symbiansigned.com, in TOOL1 section that anyone could access "public" folders with a file browser and move, copy or delete the files of my application. But checking again the tests I have to pass to get Symbian Signed Certificate I notice that it's not forbidden to create "free access" files... I hope.

Thanx, again.

Re: How to share a file between 2 applications.

alh — Fri, 18 May 2007 14:30:59 +0200

Only by writing a server that regulates access to the file.

As in, a server keeps the file in its private folder, and you implement file access function (open/read/write) using IPC to the server, and the server then does the file actions.

But, will you save sensitive data in the file?

If not, this is no issue, just create the file in \data\others.

Symbian signed doesn't care about the security of your program as long as it doesn't break the security of the system.

How to share a file between 2 applications.

abel.campos — Thu, 17 May 2007 13:57:49 +0200