CODEWITHSUNDEEP
iossecurityplistnsurlios9
Slowbro
Slowbro

Reputation: 191

iOS 9: Application Transport Security plist configurations

I am currently working on a application that uses both HTTPS endpoints and HTTP endpoints. Now I want to conform to Application Transport Security for iOS9 by making a NSExceptionDomainsdictionary in the plist, but the amount of 3rd party endpoints my application hits is dynamic and always growing so to do this would be a fairly tedious task.

So while I could just set NSAllowsArbitraryLoads to YES I would much rather have ATS off by default except for my handful of secure HTTPS endpoints. Is it possible to do this? I saw one blog post about someone configuring the plist this way.

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But I cannot find any information verifying that this is a valid solution, nor do I know how to know if a HTTPS request is using ATS. Does anyone know if this is possible or how to know if this is working?

EDIT

It's worth mention that the tags in the current app documentation is incorrect.

NSExceptionAllowInsecureHTTPLoads NSExceptionRequiresForwardSecrecy NSExceptionMinimumTLSVersion NSThirdPartyExceptionAllowsInsecureHTTPLoads NSThirdPartyExceptionMinimumTLSVersion NSThirdPartyExceptionRequiresForwardSecrecy

Are Actually

NSTemporaryExceptionAllowsInsecureHTTPLoads NSTemporaryExceptionRequiresForwardSecrecy NSTemporaryExceptionMinimumTLSVersion NSTemporaryThirdPartyExceptionAllowsInsecureHTTPLoads NSTemporaryThirdPartyExceptionMinimumTLSVersion NSTemporaryThirdPartyExceptionRequiresForwardSecrecy

Upvotes: 4

Views: 2801

Answers (1)

Slowbro
Slowbro

Reputation: 191

After doing some more research I was able to answer my own question. So basically you are saying everything needs to default to not using ATS by setting NSAllowsArbitraryLoads = YES.

But then in your exceptions dictionary(NSExceptionDomain) you are specifying endpoints that you want to act differently. So that means you can put your HTTPS endpoints in this list and specify it to use ATS by setting NSTemporaryExceptionAllowsInsecureHTTPSLoads to NO. I was able to verify this by putting a unsecure endpoint itunes.apple.com and trying to reach it. When I set NSTemporaryExceptionAllowsInsecureHTTPSLoads to NO it failed and complained about it not being secure.

This may be obvious to most people but with the little documentation out there I hope this helps.

Upvotes: 4

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