Review Request 129983: [RFC] PoC patch for polkit support in kio.

[Chinmoy Ranjan Pradhan]

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https://git.reviewboard.kde.org/r/129983/
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(Updated March 9, 2017, 3:57 p.m.)


Review request for KDE Frameworks, David Faure and Elvis Angelaccio.


Repository: kio


Description
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This is regarding the GSOC idea https://community.kde.org/GSoC/2017/Ideas#Project:_Polkit_support_in_KIO.

This patch intends to demonstrate one possible approach to provide polkit support in kio. Here its only for the delete operation. This is based on the patch in task https://phabricator.kde.org/T5070.

The approach is as follows;
1. Whenever file ioslave gets access denied error it calls the method *execWithRoot* with the action that requires priviledge, the path of items
   upon which action needs to be performed and a warning ID as arguments.
2. *execWithRoot* then executes the KAuth::Action *org.kde.kio.file.execute*. 
3. This Kauth::Action has its Persistence set too 'session'. This means that after authentication the restrictions are dropped for a while, for    
   about 5 minutes. This is similar to the behaviour of sudo command.
4. During this time we can perform any action as a privileged user without any authentication. So to prevent any mishap i added a warning box which
   would popup before performing any action(only during this period).
5. After the said time interval the root privileges are droped and calling *execWithRoot* should show the usual authentication dialog.


Diffs (updated)
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  src/ioslaves/file/CMakeLists.txt b9132ce 
  src/ioslaves/file/file.h 109ea80 
  src/ioslaves/file/file.cpp eaf6c88 
  src/ioslaves/file/file_unix.cpp 82eb11a 
  src/ioslaves/file/kauth/CMakeLists.txt PRE-CREATION 
  src/ioslaves/file/kauth/file.actions PRE-CREATION 
  src/ioslaves/file/kauth/helper.h PRE-CREATION 
  src/ioslaves/file/kauth/helper.cpp PRE-CREATION 

Diff: https://git.reviewboard.kde.org/r/129983/diff/


Testing
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File Attachments
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warning dialog
  https://git.reviewboard.kde.org/media/uploaded/files/2017/03/09/d42570e8-aedf-4c02-801e-362a68755c2c__polkit_integration.png


Thanks,

Chinmoy Ranjan Pradhan

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