Ultimately what I would like to do is check the signature of the bound
application.

I want to have a mechanism where developers can register their
signatures with my service, then I will check to see if their package/
signature combination matches what I have in my web service.

This is exactly what the Facebook Android application does for Single
Sign On.

I just can't find a clean way to get the calling application.


On Dec 16, 8:46 am, Harri Smått <[email protected]> wrote:
> Hi,
>
> I would go for a simple handshaking mechanism quite likely. You can let 
> anyone bind to yourservicebut disallow usage of IPC methods for unidentified 
> clients. E.g.
>
> 1. Client connects toservice.
> 2. After connection is established, client is required to call, say, 
> identify() IPC method which returns a String, Integer, what so ever.
> 3. After receiving this challenge, client has to call identify(result) method 
> which gives client a session id.
> 4. For all of the later calls client has to use this session id among with 
> the call.
>
> Quite obviously all this depends totally on how much security you're required 
> to have within your client-serviceinteraction but some very simple 
> handshaking protocol might work surprisingly well if it's kept secret.
>
> --
> H
>
> On Dec 16, 2011, at 6:26 PM, Bsweet wrote:
>
>
>
>
>
>
>
> > It is the spoof part that concerns me.
>
> > Anyone else out there have any creative ideas?
>
> > Right now I'm considering just checking who is on the top  of the
> > activity stack, but that is hokey and not reliable.
>
> > On Dec 16, 4:30 am, Mark Murphy <[email protected]> wrote:
> >> On Thu, Dec 15, 2011 at 9:54 PM, Kristopher Micinski
>
> >> <[email protected]> wrote:
> >>> When you get a bind in yourservice(your onBind) can you just take
> >>> the intent and get component associated with it?
>
> >>> From Intent:
> >>> ComponentName    getComponent()
> >>> Retrieve the concrete component associated with the intent.
>
> >> That should be the recipient, not the sender.
>
> >> The only way I know to find out whoboundto you is if you require
> >> that information in an extra, and that can always be spoofed. The
> >> expectation is that you should not care *who*boundto you, merely
> >> whether they had sufficient permissions to do so.
>
> >> --
> >> Mark Murphy (a Commons 
> >> Guy)http://commonsware.com|http://github.com/commonsguyhttp://commonsware.com/blog|http://twitter.com/commonsguy
>
> >> _Android Programming Tutorials_ Version 4.1 Available!
>
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