They are outside of the module so can be called when the module is
disabled, which gives an error somewhere deep in the call stack.
Check for all endpoints whether saml2-idp is enabled in config
and whether the module is enabled before doing anything else.

Fix ArtifactResolution due to misuse of Issuer

Now we are finally using the 2.x branch of the SAML2 library, which was also migrated to use namespaces. Even though the library provides an autoloader that allows loading the classes with the old names using class aliasing, we need to do the migration in one commit (at least for most part of it). This is due to the way SimpleSAMLphp checks data types, using inheritance to check objects agains abstract or more general classes. Even though class aliasing works, there's no way to replicate those relationships, and type checks that use the old class names will fail because the aliases are virtually new classes that don't inherit from others.

(being respectful with occurences that might change the behaviour, i.e. default database prefixes)

Fail more gracefully when the different endpoints are accessed directly. Instead of displaying an "Unable to find the current binding" error message that creates confusion, tell the user it's his fault.

Fixed a bug on ArtifactResolutionService introduced by a previous commit on new SHA signatures support.

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@3186 44740490-163a-0410-bde0-09ae8108e29a

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@2895 44740490-163a-0410-bde0-09ae8108e29a

ArtifactResolutionService: Return empty ArtifactResponse when receiving a duplicate ArtifactResolve.

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@2534 44740490-163a-0410-bde0-09ae8108e29a

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@2491 44740490-163a-0410-bde0-09ae8108e29a

This patch implements support for sending responses to authentication
requests via the HTTP-Artifact binding. To enable, add
'saml20.sendartifact' => TRUE in saml20-idp-hosted metadata. The IdP
should then send HTTP-Artifact responses to SPs that request it.

Note that this requires a working memcache server.

Thanks to Danny Bollaert for implementing support for this.

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@2121 44740490-163a-0410-bde0-09ae8108e29a