Releasing a modified version of RealVNC
angelosarto "at" gmail.com
Wed Oct 5 13:44:00 2005
I cant answer your question definatively, but ultravnc has a simmilar tool
and as far as I know, it does not download sources by default. Perhaps
requiring two links on the web page if used?
Here is a link to Ultravnc's version of what you are talking about:
On 10/5/05, S. I. Becker <stewart "at" sibecker.co.uk> wrote:
> Dear Wez et al,
> I've created a modified version of VNC. It is the same as RealVNC 4.1.1
> with an added commend-line feature for the server that initiates a single
> connection to a listening viewer, and doesn't permit any other
> no matter which side they are initiated. The server exits when the
> connection is closed. My ultimate aim is to make this into a "help me"
> feature, which could be put on a website.
> My question is not technical, but regards licensing and copyright. This is
> the first time that I want to release software under the GPL, and I want
> be sure that I follow the conditions properly. Obviously I need to make
> source code available. What do I need to do regards copyright notices,
> in the source and packaged with the application?
> Secondly, I mentioned above that my intention is to make this into a "help
> me" feature, which could be put on a website. The website will have a link
> to a program P1.exe. The user can download this or run it direct from the
> website as desired. When run, P1 will download the modified vnc server and
> the wm_hooks.dll to a temporary folder. Then P1 runs the modified server
> run via the command line to connect only to me (exactly where "me" is will
> be determined by other features in the P1 program). After the server
> P1 deletes both the server and the dll. So my questions are:
> Does P1.exe need to be released under the GPL? It is not "a work based on
> the program" as it will be all my own work. However, it is dependent on
> in order to work. As P1 downloads the GPL licensed .exe and .dll, does it
> also have to download the source code/a written offer of it. NB the source
> will be available for download at the same location from which the .exe
> .dll are downloaded. I don't really want to go the "written offer" route,
> but nor do I want P1 to initiate downloads that 99% of the time will just
> slowing the vnc connection. One option I've thought of is to have an
> in P1's GUI that user's can tick to say that they want to download the
> source as well as the binaries. Would that be sufficient?
> I haven't been able to find a newsgroup/mailing-list that deals with
> question like "I want to do xyz, is this permissible under the GPL?" so I
> thought I'd try you as the original authors of RealVNC to see if you feel
> intentions would infringe your copyright. If anyone knows of a group where
> it would be more appropriate to ask my questions, please let me know.
> Stewart Becker (NutmeG)
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> VNC-List "at" realvnc.com
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