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Comment by pksadiq | Hacker News Reader

> You only have to give code to the user after purchase.

IANAL.

You don't really require to give the source code unless the purchased person asks for the source. Most people don't care about the source. And you require only to provide source for people who obtained the binary legally. Nobody else can demand for source code.

Say for example, most of the D-Link routers come with a warranty card saying the software is GPL and is available on request. Period.

You can also void the warranty of the software (and hardware) in case the software you sold was replaced with a modified version (afaik, requesting for source can't make the warranty void).

There are a few things to consider: GPL v2 requires you to produce the source code in CD/Floppy (or like media), while GPL v3 allows you to have the source uploaded to net (or sent via email).

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> You don't really require to give the source code unless the purchased person asks for the source.

I think you're mixing mutually exclusive options. As I understand it, GPL requires you to either provide source code up-front on the same terms as the binaries (I think the relevant phrase in GPLv3 is "equivalent access"), or alternatively provide a written offer to provide the source code to anyone who requests it. The reason the offer must be to anyone is that your customers can distribute that offer with the binaries in lieu of source code. That way, they have the ability to redistribute/"convey" the software in a compliant way even though they don't have source code.

> GPL v2 requires you to produce the source code in CD/Floppy (or like media)

Unless I'm missing something, GPLv2 just says "a medium customarily used for software interchange", not specifying that it must be any sort of disk/tape.

There’s one other clause that you’re missing: you may not further restrict the redistribution of GNU GPLed software (either source or binary). So D-Link may restrict distribution to “on request” by “people who bought our hardware”, but they cannot stop one or more of those people from redistributing the software obtained thereby.

That, plus the fact that if you incorporate any GNU GPLed software in your own software your own derivative software must be licensable under the GNU GPL, or be more liberally licensed, makes for the uncomfortable discussions with lawyers about use of GNU GPLed software in any company.

Just out of curiosity: do you know about times people asked d-link for the source and actually got it?

No. But as ddwrt and openwrt source codes are already available in public, people may not be interested (because you are not going to get the source of binary-blobs in any case, blame Linus Torvalds for that).

I have found a person that requested source of BMW i3 car software, and he have uploaded the source online[0].

[0] https://github.com/edent/BMW-OpenSource

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