Co-authored-by: Daniel Pfeiffer <daniel@mediabounds.com>

* Migrate HTTP::redirect

* Migrate HTTP::redirectTrustedURL

* Migrate HTTP::redirectUntrustedURL

* Migrate HTTP::submitPOSTData

* Temporarily revert to make phpunit work

* Migrate logout handlers

* Remove unnecessary assertion & simplify logics

* Remove unnecessary assertion & add new one to check response type

* Remove unnecessary assertion & rationalize code

* Migrate IdPDisco

* Migrate ProcessingChain

* Fix return-type & drop unnecessary use-statement

* Address review comments

* Do not add caching headers at all

* Fix type-confusions

* Migrate saml2 bindings

* Migrate completeAuth

* Migrate handleLogout

* Migrate some more

* Migrate a whole lot more (messy)

* Migrate logout

* Migrate a whole lot more (also messy)

* Many fixes

* Raise coverage

* Psalm: Ignore exteranl adfs-module

* Replace use of _GET globals

* Migrate bindings (send)

* Migrate bindings (receive)

* Fix psalm-dev

* Fix assertion

* s/subclassOf/isInstanceOf

* Fix type-confusion in logout handlers

* Update container

* Bump saml2 + adfs

* Rename namespace

* Migrate email utils to non-static

* Migrate http utils to non-static

* Migrate net utils to non-static

* Migrate random utils to non-static

* Migrate system utils to non-static

* Migrate time utils to non-static

* Migrate xml utils to non-static

* Upgrade notes

* Update test-framework

* Fix tests

Improve error handling

Convert to our wrapper class for assertions

* Migrate assertions to Webmozart

* Added Kernel class to handle request

* Kernel handle request

Kernel is loaded in SimpleSAML\Module class
Removed Router and ControllerResolver classes

* Added route command (squash)

* Use symfony application and cache

* Updated to today's standards

* Fix for Symfony4 & Catch environment from ENV variable

* Standardize location of routes/services files

* Trying to make slashes work properly in all situations

* Convert XML to YML

* Fix some template-names and endpoints

* Rename Controller-classes

* Update dependencies

* Fix routing files

* TooManyArguments

* Fix TypeCoercion

* PSR-12

* Fix rebase mistake

* Rebase lock-file

* Fix Psalm

* Add strict_types declaration

Co-authored-by: Sergio Gómez <decano@gmail.com>

This allows us to still validate XML documents (disabling the entity loader makes it impossible, as we have multiple schemas in different files), while protecting against schemas trying to import from URLs.

This reverts commit 961f5250.

This is done already when creating the document, but here we should protect as well against rogue schema files.

PSR-12 compliancy