How can I restrict any developer from using my created static library? - iphone

I have created one static library in iPhone sdk, and I am worried that If I provide code to anyone in which static library is being used, then anyone can use static library. So Is there any way to restrict them by using library until they get license? I am new to licensing any library.

This is a problem you must solve by legal means, not by any technical solution.
Make sure to only give the library to people you trust, and if needed have them sign an agreement not to spread it.
Also ask yourself if it is worth the trouble. Is your code so unique that they can not find it elsewhere, or duplicate it themselves in a few days, using Google and stackoverflow alone?

As said by #PeyloW,
This is a problem you must solve by legal
means, not by any technical solution.
But there are some simple ways to "block the code": You can create a RAR or ZIP archive, encrypted with password, and after they get license, you can tell them the password.

If you want to "Bind" license to a "developer's computer", than you simply need something that you can bind. For example that can be the emulator's UDID.
you can generate a license for emulator's UDID, and only limit emulator development, while allowing unrestricted access for ARM code (on device)
so you can basically check for emulator UDID
check license file
if license file allows that UDID, run
if not then show a message etc
for development purposes, everybody needs emulator, so I guess limiting it is enough for you.

Personally, I would create a new static library, check your code coverage and copy in only the code used by the app consuming it. Or in other words, don't give away more than you need to.
Then, as someone mentioned in the comments, obfuscate the calls. Your library is going to be worthless without documentation if your calls have to be deciphered. Odds are that anyone that has the aptitude of deciphering what your calls mean probably has 80% of a white-room reverse-engineering of your code already done.
You can't really force a license upon your client at the final hour unless they agree to it. So even if you did try to force them to license your library, it might not even be valid to do so with the original agreement intact. I'd do damage control to the extent your time is worth and chalk this up as a learning experience. 5 months from now, you'll probably have that static library re-factored to something better anyway. And next time, you'll work that into your agreement.

If you provide the static library, no one can get back the code.
Do you have reservations in others using your static library also?

Related

Making proprietary code accessible but not downloadable

For historical and legal reasons (industry funding and contracts), we have proprietary simulation code (that we wrote, some in C and some in python) that we can't make publicly accessible.
However, we want to preliminarily move to a model where at least the functionality of the code is more accessible. I know one model people use is to have people submit jobs to our servers, and we just return results.
However, is there a way where people we've granted access to can use the software on our computing cluster, but not take it with them, e.g. at least in a sandboxed environment so that they may use/debug their use of the code before submitting jobs to the server? Does C/python code make any difference.
I know ideally we'd just make the code open source and not worry about this, but (out of my paygrade) this is not in the cards right now.
Apologies if this question has been asked or if it is super basic -- I'm not sure what the right terminology to use and search with to address this issue.
Thanks!

Exceptions to no private API usage in iOS?

My company is looking to develop an iOS application which would need to make use of private APIs to function - in fact use of such APIs is the entire basis of the program (I'm purposely not revealing details for business reasons).
My question is, is there any chance that if we explained the situation, that Apple would allow an exception for our app to be approved even when using these private APIs? I believe we have a very legitimate reason to request an exception for the functionality we're looking for, so I'd just like some examples of any exceptions that have been made to the private APIs rule with details so that we can have a better idea of what might be expected from Apple. Thanks.
I'll be honest with you: no. If you're looking to put this on the app store, no.
You may wonder how I know this with such certainty: I've worked with carriers that carry the iPhone, and I've worked with very large companies with whom Apple has working relationships (ie, you can actually talk to someone fairly senior at Apple). If Apple won't let carriers use private APIs, they not going to let you do it either. One 'legitimate' private API use might be to put recent call information into a carrier provided account app. Could be pretty useful, right? And the carrier already has this information, so no problem? No. It's a big problem. Apple just won't allow it. You have to get it from elsewhere (ie, via the carrier's own database).
There are no exceptions, and currently apps get statically analysed immediately after submission. If you call a private API your app will almost certainly be instantly rejected automatically by the static analyzer. It won't even go through manual review.
If you're looking to distribute on the app store, there are literally no exceptions now that code gets statically analyzed.
Put it another way: if Apple made an exception for your app they'd have to make an exception for every app. And then your unique selling point wouldn't be so unique any more.
Sorry I can't give you a more positive answer, but I speak from experience!
Its entirely possible, but extremely unlikely. they made an exception for UIGetScreenImage(); but that was because there was a very large number of developers who had filed radars for it.
I would suggest you file high quality radars for enhancement, explaining what you want and why. also maybe consider using a DTS to find out if there is an alternative way, or if they are able to get authorisation for it.

iPhone Lite version - what is allowed?

I'm scratching my head over this.
I have a moderately successful app which has a free "LITE" version in addition to the full one. This is a utility app, not a game with levels, and I'm having trouble figuring out what Apple will accept for the lite version. The reason this is now an issue is that I've brought both code bases together with different targets and my new improved lite version will be iPad compatible as well.
There are two fundamental differences in the versions. In the lite version, the data displayed is only displayed for the current day, whereas the full version allows users to choose any date. Additionally, one of the data screens shows 3 data points in detail, whereas the full version shows much more. The lite version is perfectly functional in its own right and has no greyed out features.
What I would like to do is use the spare space on the lite version data screen to explain that more data is available in the full version and offer a button to upgrade, however I can't figure out if Apple will classify this as "upselling" (well how else am I going to mention the full version?) and from reading the new app store review guidelines, I was disappointed to note that absolutely no further clarity seems forthcoming from Cupertino in this regard. All the examples I find from Apple are games with additional levels and this simply doesn't match a "utility" application.
Is there any recent advice on what is and what is not allowed? I'm aware of not having greyed out functionality and nagging the user - but does having an upgrade button on one of the tabs (in the case of the iPad in a popover) count as nagging? Am I allowed to mention the additional features in the premium version or does that count as upselling? If not, what can I actually say?
Clues welcomed!
Frankly speaking, there is no way to be 100% sure without submitting the app. There might be someone who have already tried this and get rejected. It's not very easy to be sure. But as a user personally I won't be happy to see the upgrade button in every page. Rather I would like to get the summery of full version in a different page. This might not be a better design to have an upgrade button in every page, though this is my personal opinion. Apple gives importance to be consistent with the convention, and the convention is to have different upgrade page, I think.
You can download a number of lite apps and check whether any one has done this kind of thing. The policy should be same for both game and utility. If after checking many you don't find a single one, then you should reconsider this. But yes, you can't be 100% sure.
The rules appear to be inconsistently applied.
I think it boils down to the perceived difference between "Ha! You don't get $feature unless you pay us!" and "By the way, we also offer $more_expensive_app with more features." The two are effectively the same thing, but they leave a different impression. Yes, it's a big grey area — I've seen apps across the spectrum (I don't recall any persistent nagging/mentions, but certainly "buy $full_app to get more levels").
"Other apps by $company" might be a good way to go, perhaps in an "about" tab or similar.
Reviewers are also far from consistent. Before Apple did any "private API" checks (they didn't seem to until mid-2009; apparently not even the frameworks you linked to which is dead easy), private API usage was determined by whether your app did anything in $list_of_suspicious_behaviour, which seemed to be applied inconsistently by different reviewers.
I've also used "$full_app" because that's the impression I got; I think part of the guidelines is that you're not supposed to give the impression that your app is not "full". I also hate crippleware (artificially limiting a feature, e.g. a navigation app limited to 8 waypoints and telling you to buy the full version if you want more, as opposed to simply not including a feature), but Apple doesn't seem to mind.
Apple allows ads in apps if they are presented in a reasonable manner.
Developers can choose which ad network to run, even from competitors such as admob.
There's nothing to say you can't be your own ad network.
Just make sure your ad for your products (which occasionally just so happens to be an ad for the full version of the same app) follows the same presentation rules as the ads for admob, iAd, etc. follow. Your own ad network may or may not be the campaign you choose to run during the review period.

How to stop pirates? Someone already nulled and pirated my script :(

I dont know what to say. About 3 days ago I released a script to the public. Today I realised, after searching on google that someone had already nulled (removed my protection) and pirated the script.
How do I stop users from pirating the script? It is written in PHP.
Please help or suggest some solutions.
Thank you for your time.
UPDATE By releasing to the public means that I have started selling it to users.
UPDATE My program is priced at only $49. Very reasonable for the functionality it offers. I do not understand how I should stop pirates from pirating my code. The replies which most people have given are rather sarcastic. I was hoping for some good advice. I know there is no silver-bullet. But some techniques which you have used in your PHP programs.
The only real way to prevent piracy is to not give the user the program at all! What I mean by this is have the logic you want to protect remain server side and offer a client interface.
There are a few companies that offer protection services, but these are expensive and can sometimes still be overcome.
If you're worried about this happening again, try obfuscating your code. Here is a free program to do just that on PHP code.
I'm not trying to be sarcastic here: forget about them. Here's my rationale:
You can spend tons of time trying to
prevent pirates from pirating your
stuff, or you can spend the same
amount of time giving your paying
users more functionality.
Extreme copy protection does not give your paying users anything but more
hoops to jump through to use your
application - which might lead them
to get frustrated.
Pirates will pirate your applications
no matter how much time you spend
trying to stop them.
Budget a certain
amount of time to put in basic copy
protection - just enough to keep the
honest people honest.
Most importantly: Don't irritate your paying customers.
They are the ones you need to make
happy.
There's not much you can do.
Be flattered your work was deemed worth the effort!
How do I stop users from pirating the
script?
Do not release sensible source code to the public...
[EDIT] After a few downvotes, I decided to comment on my answer:
Any code that is released public has a chance of being hacked. This is the number one reason why Javascript is not secure. No matter how much you will obfuscate it, compress it or translate it to some random japanese dialect, it is still source code that the user has access to. Hence it should not contain any sensible information such as passwords or such. All sensible data should be stored in the server side where it is kept hidden from the user.
If you are releasing a php framework containing both the server and client code; then you have no way of fully protecting yourself. PHP is, like Javascript, an interpreted language. You may translate it, compress it, or obfuscate it as much as you want, (and it's probably the best thing you can do) you will never fully protect it when released to the public.
Again... If there was a magic way to prevent code from being broken, it would have been known for a long time. No-cd patches / cracks for new games/softwares now are almost released the same day as the softwares themselves. It is, as noted by Paul, a form of flattery for you, even though I understand how sorry you may feel.
There are a few instances where programmers ended up with bullet-proof protection, but it usually involved high-end engineering.
With PHP, you're mostly out of luck. It's an interpreted language, which means that you are essentially forced to give away the source code. Sure, there are obfuscators (tools that "scramble" the source code to make it near impossible to read for humans), but they can be circumvented as well.
There are product like Zend Guard which seem to offer a better level of protection, but from my understanding, your customers need Zend Guard installed as well, which is almost never the case.
There are several methods of handling this:
Offer your product as a service. This means finding appropriate hosting in the cloud, etc. This removes access to your code base, thus preventing direct piracy. Someone can still reverse engineer your stuff, but I'll touch on that later.
Add a unique identifier to each version of the script sold. This can be done automatically, and is great to do with obfuscated code (another, complementing method). This will give you the ability to track whoever pirated your code. If you can track them, you can sue them (or worse).
Pursue legal action. You'll need to know who leaked the code in the first place for this. Their PayPal information or even an IP address should be enough. You go to your lawyer, ask him to get a court order telling PayPal/ISP to release the identity of the thief, and then start tracking them down. If they're located overseas, your only real option is to freeze/appropriate funds from PayPal/credit card. Banks will be sympathetic only if they have a branch in your country (which can be targeted for legal action).
Ignore it, and simply build your business model around the support that you offer.
The sad fact is that information cannot be secured completely. There is no way to prevent a team of Indian programmers from reverse engineering your program. So you just have to be better than them, and constantly improve your product (this is "A Good Thing (TM)", so do it anyways)
Also keep in mind that DRM and other solutions are often controversial, and will reduce your sales (especially among early-adopters). On a personal level, I would suggest viewing this as a compliment. After all, your script was useful enough that someone bothered to pirate it within a week!
PHP is easily decoded, so for people who really want to know, it's easy to find out the source code. However, there are certain obfuscator programs such as this one that'll make your PHP script almost unreadable for those trying to decode it.
What kind of protection did you think you had added to a PHP script, anyway? You should add a line of the form:
if ($pirated)
exit();
and then make it mandatory (in the licence agreement) that users set the $pirated variable accordingly.
Forget trying to prevent it
Go the way of CakePHP (see sidebar on front page) and many other open source projects and ask for donations.
People actually do it!
Contact the pirate and let h{im,er} know that you will be forced to take legal action against them if they do not abide by the license.
I agree with #Michael.
Try ionCube or Zend Guard. They are both commercial offerings, but you say that you are selling your software so it might be worth it. Although nothing is foolproof and can be reverse engineered with enough effort and technical skill, these solutions are probably good enough for the average PHP script vendor.
I agree with Samoz's suggestion to keep the logic server side, however this can often be hard to do. The best strategy is to make the user want to buy it by offering updates automatically to registered users, as well as installation, advice and good support. You are never going to sway people hell bent on pirating, however your goal should be to persuade those who are undecided as to whether to pirate or purchase the script.
Any obfuscation/decryption technique for PHP can be cracked
Jumping in very late to this conversation, but saw this question featured. Nobody mentioned contacting a lawyer and pursuing litigation. You likely saw the script on a server - hosted by a known hosting company - you can probably get a DMCA takedown to have the script removed. If you really press the case, you may be able to sue for damages.
Found this link to assist in going this route:
http://www.keytlaw.com/Copyrights/cheese.htm
You could always pirate it yourself to the internet and hope that any nuller will think "its already been grabbed" so don't bother. But pirate a real buggy version. When users come to you looking for help you'll know they have a pirate version if they question you about specific bugs you purposely added and you can approach them accordingly
If your script won't consume a lot of bandwidth, you could keep your "logic" server-side, as samoz suggested, but if your users won't use it responsively ( a crawler, for example ), this could be trouble.
On the other side, you could become a ninja ...
Attach a copyright notice to it. Some companies will actually care that they're using software properly.
Actually I think it's easier to protect PHP scripts than desktop software, because with latter you never know who is running the cracked copy.
In case of PHP on the other hand, if people run your software on public web servers, you can easily find them and take them down. Just get a lawyer and turn them in to the police. They could also be breaking DMCA laws if they remove your protection so that gives you even more ammunition.
Technical way to protect your code is obfuscation. It basically makes your code unreadable like binaries in compiled languages (like Java). Of course reverse engineering is possible, but needs more work.
In general it's hard to prevent users from stealing code when the program is written in a scripting language and distributed in plain text. I've found that http://feedafever.com/ did a really nice job of being able to sell PHP code but still give the code to users.
But the solution to your problem is very dependent on the domain of your program. Does this script run on the users machine with no internet connection? Or could this be a hosted service?
I'd also suggest looking at some of your favorite software, and seeing how they convinced you to pay for it initially. The issue I find isn't always "how can I prevent my users from stealing my software" but sometimes more "how do I convince my users that it's in their best interests to pay me". Software piracy often comes when your product is overpriced (Ask your friends what they would pay for a software package like the one you are selling, I've found that I have historically overpriced my software by 20%).
Anyway, I hope this helps. I'm glad that you are trying to create software that is useful to users and also not incredibly crippled. I personally of the mind that all software that isn't shrink wrapped or SAAS should be free, but I totally understand that we all need to eat.
The trick is not to try to prevent the piracy (in the long term, this is a losing battle), but to make the legitimate version of your product more accessible and/or more functional than the pirate versions.
"Making it more functional" generally means providing involves additional features or services to registered users, which cannot be replicated for free by the pirates. This may be printed materials (a users manual, a gift voucher, etc), services such as telephone support or help setting the product up, or online extras within the software.
I'll point out that companies such as RedHat are able to make significant amounts of money selling open source software. The software itself is freely available -- you can download it and use it for free without paying RedHat a penny. But people still pay them for it. Why? Because of the extra services they offer.
"Making it more accessible" means making it easier to get your legitimate software than a pirate copy. If someone visits Google looking for your software and the first result is a pirate download site, they'll take the pirate copy. If the first result is your home page, they're more likely to buy it. This is especially important for low-cost software: pirated software may be 'free', but usually it takes more effort to get. If that effort is outweighed by the low cost and lack of effort of simply buying it legitimately, then you've won the battle.
I saw anti-piracy working once only. Quantel EditBox systems (a post-processing video solution), Hardware+Software+Internet solution against Piracy. Workstation only works after checking if the bank received the monthly rent. If not, workstation was locked. Funny days when this happens... (Funny days for me, no work at all... No funny day for the hacker.)
Well, PHP is far away from hardware solutions... so I guess your only real choice is a server side protected against a tiny unsafe client pushing content, as pointed in some answer yet.
piracy != copyright infringement
There are known routes to litigate copyright infringers.
Does it really matter enough to hire a legal team?
Obfuscation do add something. It will not be fun to try to modify your code at least even if they can take the first version of it. In best case they will try to find some open source project that does something similar. Guess this would give you an fast fix at least for your problem?

Is it expected to disclose all the frameworks / open source software used in a project to a client

Taken aback to day when I was confronted about the use of validation code used from the Csla framework. It felt like I was reprimanded for not disclosing the use of the framework to the client.
Is this not the same as using libraries such as jQuery etc?
You absolutely should acknowledge what you're using, IMO.
Some clients may have particularly strict legal requirements (whether for legitimate reasons or not - they're the client, it's not up to you to judge their laywers) and detailing any third party software you're using to create a product for them seems only reasonable.
What reason could you have for not wanting to be open with your client?
This depends on the license of the open source code you are using. Many of them require to acknowledge the use in some credits section, others require you to redistribute the source code, etc. You should read the license and act accordingly.
It depends on the project and the kind of client and whatever contracts you had. However, for a typical consultant delivering code to a customer, I would say no it is very strange that you would be reprimanded for not bothering them with details such as the use of CSLA. That's pretty odd.
It is the same, I have a feeling that you would have been reprimanded for using jQuery as well. There are enterprises that frown upon the use of open source for various reasons.
They boil down to
The type of license and what does it force the user to do
The availability of support in some commercial form
The need to 'share-alike' the results
You should know what's your customer/employer's stance on this. If they don't have a stance, then you have to discuss on a case-by-case basis.
I usually tell people I use a lot of open source and, by seeing the response I get I know the path to follow. If they jump and scream at the mention of open source and the lack of support and whatnot, I just tend to ask for budget to buy commercial components or present good cases as to why the open source version of X is better than the commercial alternatives.
It very much depends on the type of project and the type of client. The real problem here is that you were surprised, which indicates non-alignment of expectations. How did the client motivate its interest in Csla specifically?
If your client needs to know or cares about which technology you use, then you should specify everything as part of the project documentation. If the choices are clearly described, then it is easier to have a discussion about them, if required. Documentation also gives you a way to ask (literally) for 'sign-off', if that is the way you work.
From your question it is not clear whether the problem was the choice of framework, or not having informed the customer.
Even on projects with minimal documentation, if the customer owns the code then I always deliver at least a High-level architecture document that includes the names and exact versions of every software component used, along with a brief description of what it is for and why it was selected. This is also the correct place to address any license issues.