Configuration file name and version

I am developing an application for the iPhone and one of the requests made by the customer is to install a configuration file to force passcode on the device the requirement is that if the configuration file is not installed then the application will display an alert to the user requesting him to navigate to a specific URL to install it

my question is

How can you check if a configuration file is installed on the iPhone (programmatically) and what version it is开发者_运维知识库?

Thanks

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Take a look here , Checking whether a configuration profile is installed on iOS

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At startup you can check if configuration file already exist in specific folder for example cand stored in Documents . Version for configuration file cand be stored inside of it