Replace WebDAV library

1 Initial Problem

The WebDAV implementation is a part of the ILIAS core since many years. As old as the service itself is, as old is the used pear-library. This is problematic, because the library is outdated. And with outdated I mean there is no more development and there is no maintainer anymore.

2 Conceptual Summary

Because of the reason named above, we from the Lucerne University, suggest to exchange the pear-library with the sabreDAV library from sabreIO. And based on the new library reimplement the WebDAV-Service on ILIAS.

More information about sabreDAV: SabreDAV Documentation

3 User Interface Modifications

3.1 List of Affected Views

No GUI-changes in planning

3.2 User Interface Details

No GUI-changes in planning

3.3 New User Interface Concepts

No GUI-changes in planning

4 Technical Information

The old pear-library was located in the service directory of WebDAV itself. The new sabreDAV-library will be managed by composer. From the frontend point of view, there won’t be any changes.
 
Additional information: SabreIO offers additional to WebDAV a library for CalDAV and CardDAV. This would ease the implementation for these two services if needed. But I think, this is a topic for another feature request.

5 Contact

• Author of the Request: Heer, Raphael [rheer]
• Maintainer: Kergomard, Stephan [skergomard], Heer, Raphael [rheer]
  
• Implementation of the feature is done by: Heer, Raphael [rheer]

6 Funding

If you are interest in funding this feature, please add your name and institution to this list.

• Hochschule Luzern

7 Discussion

JourFixe, ILIAS [jourfixe], 12 MAR 2018 : We highly appreciate this suggestion and schedule it for 5.4.

8 Implementation

{The maintainer has to give a description of the final implementation and add screenshots if possible.}

Test Cases

Test cases completed at 31.01.2019 by Kergomard, Stephan [skergomard]

• 25050: Activate/Deactivate WebDAV
• 25051: Change Webfolders Instructions through the ILIAS Web Interface
• 25052: Change Webfolder Instructions by Uploading a File
• 25053: Open Course as Webfolder in Windows Explorer
• 25054: Open Course as Webfolder in Finder
• 25055: Open Group as Webfolder in Windows Explorer 
• 25056: Open Group as Webfolder in Finder
• 25057: Open Folder as Webfolder in Windows Explorer
• 25058: Open Folder as Webfolder in Finder
• 25059: Open Category as Webfolder in Windows Explorer
• 25060: Open Category as Webfolder in Finder
• 25061: Open Objects that aren't Containers as Webfolder
• 25062: Open Webfolder where User has no Access as Webfolder
• 25063: Open File in Windows Explorer
• 25064: Open File in Finder
• 25065: Open File where User has no Access Rights
• 25069: Open file with forbidden file extension
• 25070: Create/upload, rename, and delete files and folders in Windows Explorer
• 25071: Create/upload, rename, and delete files and folders in Finder
• 25072: Open file with forbidden file extension

Approval

Approved at 31.01.2019 by Kergomard, Stephan [skergomard].