When connecting to an LDAP server, there are three ways to connect:
1. Insecurely through port 389 (LDAP).
2. Securely through port 696 (LDAPS).
3. Insecurely through port 389 then negotiate TLS (StartTLS).
This PR adds support for the 3rd flow, letting dex connect to the
standard LDAP port then negotiating TLS through the LDAP protocol
itself.
See a writeup here:
http://www.openldap.org/faq/data/cache/185.html
Notice this when inspecting the code coverage results. For some
reason this test wasn't triggering the bad status code path, maybe
due to signature validation. Removing the comment fixed the code
coverage.
Support schemas that determine membership by having fields on the
user entity, instead of listing users on a groups entity. E.g. the
following schema is now supported when it wasn't previously:
cn=eric,cn=user,dn=exapmle,dn=com
objectClass=myPerson
cn: eric
uid: eric
email: eric@example.com
memberOf: foo
memberOf: bar
cn=foo,cn=group,dn=exapmle,dn=com
objectClass=myGroup
cn: foo
cn=bar,cn=group,dn=exapmle,dn=com
objectClass=myGroup
cn: bar
Introduces SAML tests which execute full response processing and
compare user attributes. tesdata now includes a full, self-signed
CA and documents signed using xmlsec1.
Adds deprication notices to existing tests, but don't remove them
since they still provide coverage.
When a SAML response provided multiple Assertion elements, only the
first one is checked for a valid signature. If the Assertion is
verified, the original Assertion is removed and the canonicalized
version is prepended to the Response. However, if there were
multiple assertions, the second assertion could end up first in the
list of Assertions, even if it was unsigned.
For example this:
<Response>
<!--
Response unsigned. According to SAML spec must check
assertion signature.
-->
<Assertion>
<Signature>
<!-- Correrctly signed assertion -->
</Signature>
</Assertion>
<Assertion>
<!-- Unsigned assertion inserted by attacker-->
</Assertion>
</Response>
could be verified then re-ordered to the following:
<Response>
<!--
Response unsigned. According to SAML spec must check
assertion signature.
-->
<Assertion>
<!-- Unsigned assertion inserted by attacker-->
</Assertion>
<Assertion>
<!-- Canonicalized, correrctly signed assertion -->
</Assertion>
</Response>
Fix this by removing all unverified child elements of the Response,
not just the original assertion.
