Review Request 126724: Expose callingUser in HelperSupport if available

[Martin Gräßlin]

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https://git.reviewboard.kde.org/r/126724/
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Review request for KDE Frameworks, Dario Freddi and David Edmundson.


Repository: kauth


Description
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The Polkit backend is able to retrieve the calling user. As this is
a useful information for a helper the information can be exposed in
the AuthBackend and be retrieved through the HelperSupport.


Diffs
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  src/kauthhelpersupport.h 2828ec21aa00b7fb35dcf19db7f3869158e85b1d 
  src/kauthhelpersupport.cpp c2a88d7cc574eb6ab092f0981b828fd4c68ba025 
  src/AuthBackend.h c67a706dda107c9815e3c3f74c628fed6d2e4dcc 
  src/AuthBackend.cpp ff91dd580919af9046b3f3d26f340885d54d370e 
  src/CMakeLists.txt 1b6930d1db89f6ecc1223772b6632c57762f829f 
  src/backends/polkit-1/Polkit1Backend.cpp 78ee5bb6d97d9d83beec21e197a947dfc994b2a9 

Diff: https://git.reviewboard.kde.org/r/126724/diff/


Testing
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a helper with:
    ActionReply KScreenLockerAuthHelper::save(const QVariantMap &args)
    {
    auto user = KAuth::HelperSupport::callingUser();

    QFile file(QStringLiteral("/tmp/authtest"));
    file.open(QIODevice::WriteOnly);
    file.write(user->homeDir().toUtf8());
    file.write("\n");
    file.write(user->loginName().toUtf8());
    file.write("\n");
    file.write(QByteArray::number(user->userId().nativeId()));
    file.write("\n");

    return ActionReply::SuccessReply();
    }
    
created the file /tmp/authtest with the following content:

    /home/martin
    martin
    1000
    
Which matches my user.


Thanks,

Martin Gräßlin

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