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kdeui/util/kwallet.h
<https://git.reviewboard.kde.org/r/120202/#comment46647>

    This is bad, slots in an ifdef are a bad idea.
    
    Is there any reason this slot has to be in KWallet and not some other 
object?


- Albert Astals Cid


On set. 14, 2014, 3:36 p.m., René J.V. Bertin wrote:
> 
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> https://git.reviewboard.kde.org/r/120202/
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> 
> (Updated set. 14, 2014, 3:36 p.m.)
> 
> 
> Review request for KDE Software on Mac OS X and kdelibs.
> 
> 
> Repository: kdelibs
> 
> 
> Description
> -------
> 
> I'm still working on (the KDE4-based version of) my OS X keychain backend for 
> kwallet. I'm at a point where I think I can present a work-in-progress in an 
> RR because at least one feature has been improved enough to be of interest 
> for everyone, and also because I could use feedback on how to proceed.
> I'm currently focussing on 2 settings that are configured in the kwallet KCM 
> (SystemSettings), and for which I'm working on an implementation not 
> requiring kwalletd and/or DBus.
> 
> - idle time closing of wallets. This feature was not supported in the 
> commited version presented in https://git.reviewboard.kde.org/r/119838/ The 
> present patch adds an idleTimer and a shared lastAccessTime member. The 
> idleTimer is reset each time a client performs one of a series of actions 
> that I count as wallet accesses, and before resetting I update the idle 
> timeout value from KConfig. When the timer fires, the elapsed time is 
> compared to the shared last access time, and if it is >= the timeout, the 
> wallet is closed. This applies only to "KDE keychains", so keychains used by 
> OS X applications should not be affected.
> 
> - "close when last application exits". This requires maintaining a "user 
> list" which keeps track of what application has what wallet open. I've 
> implemented an "internal" version of such a registry, mapping wallet name to 
> application names and the list of wallets they have open (a list of wallet 
> reference, pid per application name). The registry is functional, but I have 
> not yet decided (read: figured out) how to make a distributed representation 
> of it.
> 
> So the work-in-progress concerns the distributed user registry. The idea 
> would be to maintain the registry in shared memory, meaning it'd be reset (= 
> disappear) when the last application exits, contrary to a file which can go 
> stale. This would be simple if QSharedMemory objects could be resized, but 
> apparently they cannot, so I'll have to look at other solutions possibly 
> involving OS X frameworks (NSData and it's non-objectiveC version CFDataRef 
> or CFMutableDataRef might be candidates). Suggestions welcome.
> 
> Other work in progress concerns a less wheel-reinventing approach that builds 
> on kwalletd and DBus. I don't see why the code used in `kwallet.cpp` wouldn't 
> work, but I must still misunderstand its finer details. The present patch 
> contains outcommented code that does indeed cause kwalletd to be launched and 
> slots and signals to become visible e.g. in `qdbusviewer`. But they don't 
> work, which in turn makes the whole kwallet layer dysfunctional. Here too 
> feedback is welcome on how what I'm missing and/or how to get this to work.
> Once kwalletd works, wallet idle timeout closing and closing when the last 
> client exits should work out-of-the-box, or at least I suppose.
> 
> 
> Diffs
> -----
> 
>   kdeui/util/kwallet.h d7f703f 
>   kdeui/util/kwallet_mac.cpp 8344ebb 
>   kdeui/util/qosxkeychain.h d0934e6 
>   kdeui/util/qosxkeychain.cpp 7cb9a22 
> 
> Diff: https://git.reviewboard.kde.org/r/120202/diff/
> 
> 
> Testing
> -------
> 
> OS X 10.6.8, kdelibs 4.14.1 git/master, KDE/MacPorts 4.12.5 .
> Once finalised, all changes should port easily to KF5's kwallet_mac.cpp .
> 
> 
> Thanks,
> 
> René J.V. Bertin
> 
>

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