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[Kevin Rickis <rdx565@xxxxxxxxx>]

@Yaju Thank you for the workaround. I hit the problem a couple of weeks
ago and I wasn't sure where the problem was. Cheers.

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https://bugs.launchpad.net/bugs/1689685

Title:
  SAML SSO authentication doesn't work as SimpleSAMLphp generates non-
  existent AssertionConsumerServiceURL

Status in Mahara:
  New

Bug description:
  Wrong AssertionConsumerServiceURL is genereated in SAML2-AuthRequest.

  Mahara 16.10.3 and CentOS Linux release 7.2

  Since 16.10.x release, the SimpleSAMLphp library is included as a
  managed dependency with the Mahara codebase.

  We noticed that before sending an AuthRequest to an IDP, it generates
  wrong AssertionConsumerServiceURL behaving like it is hosted
  separately with Mahara which ends up in SSO failure.

  In our case, it generates  https://localhost/simplesaml/module.php/saml/sp/saml2-acs.php/default-sp
  instead of https://localhost/auth/saml/sp/saml2-acs.php/default-sp.

  We tracked down that it is generated using 'baseurlpath' => 'simplesaml/' defined in htdocs/auth/saml/config/config.php
  and
  $ar->setAssertionConsumerServiceURL(SimpleSAML_Module::getModuleURL('saml/sp/saml2-acs.php/' . $this->authId)); defined in htdocs/auth/saml/extlib/simplesamlphp/modules/saml/lib/Auth/Source/SP.php line 189.

  As a workaround, we have hacked the SimpleSAMLphp library for
  generating correct AssertionConsumerServiceURL which solves this
  issue.

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