It actually needs a DOMNode, so it has been renamed to isDOMNodeOfType().

Additionally, some superfluous asserts() have been removed, and SimpleSAML\Utils\XML::getDOMChildren() has also changed its signature, as it should also receive a DOMNode, not a DOMElement.

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.

Move the error-reporting logic in SimpleSAML_Utilities to the SimpleSAML_Logger class, and add a new method there to evaluate whether an error would be masked or not according to its level.

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

Refactor SimpleSAML\Utils\Arrays::normalizeAttributesArray() to SimpleSAML\Utils\Attributes::normalizeAttributesArray().

No need to keep it around as deprecated, since it has only been in master, never in a released version, and has been added just a few months ago.

Move validateCA(), validateCABuiltIn() and validateCAExec() from SimpleSAML_Utilities to SimpleSAML_XML_Validator, where they are used. Remove validateCABuiltIn() and validateCAExec() from SimpleSAML_Utilities as they are no longer used. Eventually, all of this should disappear.

Deprecate SimpleSAML_Utilities::maskErrors() and SimpleSAML_Utilities::popErrorMask(). These two should be where they are used, in the OpenID modules.

Move SimpleSAML_Utilities::resolveCert() to SimpleSAML\Utils\Config::getCertPath() and deprecate the former.

Move SimpleSAML_Utilities::parseStateID() to SimpleSAML_Auth_State::parseStateID() and deprecate the former.

Deprecate SimpleSAML_Utilities::getDefaultEndpoint().

Move SimpleSAML_Utilities:: debugMessage() to SimpleSAML\Utils\HTTP::debugSAMLMessage() and deprecate the former.

Move SimpleSAML_Utilities:: checkCookie() to SimpleSAML\Utils\HTTP::checkSessionCookie() and deprecate the former.

SimpleSAML_Utilities::resolvePath was moved incorrectly to \SimpleSAML\Utils\HTTP instead of \SimpleSAML\Utils\System. Fix that.

Move SimpleSAML_Utilities:: redirectUntrustedURL() to SimpleSAML\Utils\HTTP:: redirectUntrustedURL() and deprecate the former.

Move SimpleSAML_Utilities:: checkURLAllowed() to SimpleSAML\Utils\HTTP:: checkURLAllowed() and deprecate the former.