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Mads Kiilerich

repos: introduce low level slug check of repo and group names

The high level web forms already slug-ify repo and repo group names. It might
thus not create the exact repo that was created, but the name will be "safe".

For API, we would rather have it fail than not doing exactly what was requested.

Thus, always verify at low level that the provided name wouldn't be modified by
slugification. This makes sure the API provide allow the same actual names as
the web UI.

This will only influence creation and renaming of repositories and repo groups.
Existing repositories will continue working as before.

This is a slight API change, but it makes the system more stable and can
prevent some security issues - especially XSS attacks.

This issue was found and reported by
Kacper Szurek
https://security.szurek.pl/

.. _debugging:

===================
Debugging Kallithea
===================

If you encounter problems with Kallithea, here are some instructions
on how to debug them.

.. note:: First make sure you're using the latest version available.


Enable detailed debug
---------------------

Kallithea uses the standard Python ``logging`` module to log its output.
By default only loggers with ``INFO`` level are displayed. To enable full output
change ``level = DEBUG`` for all logging handlers in the currently used .ini file.
This change will allow you to see much more detailed output in the log file or
console. This generally helps a lot to track issues.


Enable interactive debug mode
-----------------------------

To enable interactive debug mode simply comment out ``set debug = false`` in
the .ini file. This will trigger an interactive debugger each time
there is an error in the browser, or send a http link if an error occurred in the backend. This
is a great tool for fast debugging as you get a handy Python console right
in the web view.

.. warning:: NEVER ENABLE THIS ON PRODUCTION! The interactive console
             can be a serious security threat to your system.