Re: [clamav-win32] Question regarding using libclamav - Geoff Partridge - net.clamav.lists.clamav-win32

17 messages in net.clamav.lists.clamav-win32Re: [clamav-win32] Question regarding...

From	Sent On	Attachments
Pandu Poluan	Jul 10, 2008 10:52 pm
Nigel Horne	Jul 11, 2008 1:55 am
Pandu Poluan	Jul 11, 2008 3:08 am
Gianluigi Tiesi	Jul 11, 2008 4:34 am
Sarocet	Jul 12, 2008 4:06 am
Nigel Horne	Jul 17, 2008 12:54 am
Robert Wolfe	Jul 18, 2008 6:24 am
Gianluigi Tiesi	Jul 18, 2008 6:52 am
Pandu Poluan	Aug 11, 2008 2:56 am
Nigel Horne	Aug 11, 2008 3:13 am
Pandu Poluan	Aug 11, 2008 3:13 am
Geoff Partridge	Aug 11, 2008 4:50 am
Reza Mochamad Diannagara	Aug 11, 2008 5:22 am
Brielle Bruns	Aug 11, 2008 12:58 pm
Geoff Partridge	Aug 11, 2008 12:59 pm
Pandu Poluan	Aug 12, 2008 12:49 am
Brielle Bruns	Aug 12, 2008 6:59 am

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Subject:	Re: [clamav-win32] Question regarding using libclamav	Actions...
From:	Geoff Partridge (geo...@airstream.net.nz)
Date:	Aug 11, 2008 12:59:18 pm
List:	net.clamav.lists.clamav-win32

If you are using GPL code (the GPL is one of the most often used open source licenses) in a product (be it commercial or not!) and you do alter the code in any way, you are obliged to give the sources for this to everyone who wants them. There are several different methods mentioned in the GPL, one of those being that interested parties have to write you and you can send them everything on CD. You may take some money for that to cover the work you have with that (but obviously NOT to earn something from distributing the source code).

If you build a product that combines GPL code and code you have written on your own, you are of course NOT obliged to give out that source code to anyone. It can be a challenge to find the right interpretation for the word "combining" I used in the first sentence in this paragraph. You have to read the GPL very carefully to decide if your program is a usage/modification of GPL'ed code that requires you to release the source or not.

With the GPL, it basically works out to this:

If you mix GPL code in with your own code, then yes, you are obligated to release those modifications sourcecode. However, if your code just links to GPL code, you are under no such obligation.

Regards,

Geoff Partridge

Managing Director Airstream Networks Ltd

(06) 323 2858 (021) 910 422

www.airstream.net.nz

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On Tue, Aug 12, 2008 at 12:22 AM, Reza Mochamad Diannagara < gnur...@gmail.com> wrote:

Unfortunately, it is a closed source software(i think). coz, this AV is only distribute as a bundle with the magazine. Even we can't get the AV from their website. I don't think they have will to release the sourcecode.

regards,

Reza

Geoff Partridge wrote:

If you release sourcecode for PCMAV it will not violate.

Geoff

On Mon, Aug 11, 2008 at 9:57 PM, Pandu Poluan <pan...@poluan.info> wrote:

Okay, thanks for the pointer.

Problem is, I am not the programmer of the program in question. But the issue of whether the program violates the GPL or not is still a polemic in my place.

The program is called PCMAV, and the program can be downloaded here: (each link a different version of the program) http://rapidshare.com/files/130842014/PCMAV-1.5.zip http://rapidshare.com/files/123822011/PCMAV-1.4.zip http://rapidshare.com/files/116129695/PCMAV-1.3.zip http://rapidshare.com/files/109574110/PCMAV-1.2.zip

The program is a freeware, *but* does not use GPL.

Now, based on the instructions here: (in Indonesian language, I'll explain below)

http://maseko.com/2007/09/21/pcmav-kenali-lebih-banyak-virus-dengan-library-clamav-09x/

In essence, the instructions say: To integrate PCMAV with ClamAV, all you have to do is to copy the files libclamav.dll, libclamunrar.dll and libclamunrar_iface.dll, along with the latest databases main.cvd and daily.cvd into the same folder where PCMAV is installed.

Now, we are at an impasse; some say PCMAV is violating the GPL. Others say it is not. Based on the above, what's your take on PCMAV?

I hope to have a definitive answer so that we can put the question to rest.

Thank you for your help.

Rgds,

{p}

On Thu, Jul 17, 2008 at 2:54 PM, Nigel Horne <nj...@bandsman.co.uk> wrote:

Pandu Poluan wrote:

My question is: If I create a program that can *optionally* use

libclamav,

must that program be GPL-licensed as well?

The short answer is "no", there is no obligation for the new program to be licensed under the GPL. The creation of a program that optionally makes function calls to a program licensed under the GPL should not create an obligation to distribute

the

new

program under the GPL.

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