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[Mahara Bot <1722435@xxxxxxxxxxxxxxxxxx>]

Reviewed:  https://reviews.mahara.org/8122
Committed: https://git.mahara.org/mahara/mahara/commit/eee3f965fc8ba9cd469c6e6c5afbe3cb91dc9e24
Submitter: Robert Lyon (robertl@xxxxxxxxxxxxxxx)
Branch:    master

commit eee3f965fc8ba9cd469c6e6c5afbe3cb91dc9e24
Author: Francis Devine <francis@xxxxxxxxxxxxxxx>
Date:   Tue Oct 10 14:59:46 2017 +1300

Bug 1722435: Add support for refreshing SAML metadata regularly

We utilise the simplesamlphp metarefresh plugin, and hook it into the
mahara cron for the auth plugin.

This adds a new field to each instance configuration form that allows
the user to specify a url that metadata should be fetched from.

This information is fed into the metarefresh plugin's config and a cron
hook is run every hour that triggers the plugin.

The simplesamlphp configuration is updated to read both the metarefresh
target location and the normal xml config file location, with the
metarefresh config files taking precedence.

NB: because of the way that the auth/saml plugin stores the idp entity
ids you are still required to present an XML file at least once, with
the metadata refresh config only taking over once it's fetched in the
next run.

This gives a smooth upgrade path for all existing mahara instances,
where they should continue to operate as normal, and then an
administrator can add the metadata refresh url at their leisure and have
it take precedence as soon as the metadata is available

behatnotneeded

Change-Id: Ib5733f7526a1c19d3150b45d90c9b675d4dd7ad2

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https://bugs.launchpad.net/bugs/1722435

Title:
  SAML plugin automatic refresh of metadata support

Status in Mahara:
  Fix Committed

Bug description:
  The SAML plugin currently supports the addition of multiple IDP
  providers and a one time upload of the XML for that IDP, however it
  would be useful to provide it with the link to the IDP providers
  metadata (in xml form) and have it automatically fetch the metadata
  for the site on a regular basis, so if the IDP changes it's metadata
  SSO will automatically repair itself on the next fetch.

  We can do this by integrating the MetaData refresh plugin from the
  embedded simplesamlphp in the Mahara saml plugin and triggering it
  from the Mahara cron.

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