Restrict a URL access to my app only

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Hi,

How can I protect my URLs from being accessed outside my app?

for example if I have a profile photo like this:

https://www.mydomain.com/gallery/profiles/USER_ID.JPG

and I want this user to be accessed only from my app

Which means if the user tries to access this user from a browser then it should give an error.

How can I do that please?

*** I am using Xamarin with PHP backend

Thanks,
Jassim

What I have tried:

Nothing because I am not sure what and how to do it

Posted 21-Feb-20 6:25am

Jassim Rahma

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Comments

[no name] 21-Feb-20 14:13pm

Just embed the photo in your app. And don't put it out in public otherwise.

ZurdoDev 21-Feb-20 16:08pm

Look into authentication.

Jassim Rahma 21-Feb-20 16:10pm

How with a URL? I know how to do it with a web service only. but this is just a regular url?

ZurdoDev 21-Feb-20 16:22pm

A url has to be hosted by something, such as a webservice or a website. Authentication is the process of locking down what can be accessed in a website and by whom.

Jassim Rahma 22-Feb-20 12:50pm

Yeah but let's say I am hosting the salary certificate under:

https://www.domain.com/EMPLOYEE_NUMBER/docs/DOC_ID.PDF

then anyone guessing (for example) the URL will be able to access it using a browser even if they are not logged on to my portal with authenticated user ID and password

Maciej Los 23-Feb-20 8:03am

I'd strongly recommend to read these:
Authentication and Authorization - Xamarin | Microsoft Docs[^]
AuthenticateUsers with an Identity Provider - Xamarin | Microsoft Docs[^]
OAuth Libraries for PHP[^]

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