[BACKPORT] Add support for "authorization_realms" (#33262) #34032
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Authorization Realms allow an authenticating realm to delegate the
task of constructing a User object (with name, roles, etc) to one
or more other realms.
E.g. A client could authenticate using PKI, but then delegate to
an LDAP realm. The LDAP realm performs a "lookup" by principal,
and then does regular role-mapping from the discovered user.
This commit includes:
- authorization_realm support in the pki, ldap, saml & kerberos realms
- docs for authorization_realms
- checks that there are no "authorization chains"
(whereby "realm-a" delegates to "realm-b", but "realm-b"
delegates to "realm-c")
Authorization realms is a platinum feature.
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Authorization Realms allow an authenticating realm to delegate the
task of constructing a User object (with name, roles, etc) to one
or more other realms.
E.g. A client could authenticate using PKI, but then delegate to
an LDAP realm. The LDAP realm performs a "lookup" by principal,
and then does regular role-mapping from the discovered user.
This commit includes:
(whereby "realm-a" delegates to "realm-b", but "realm-b"
delegates to "realm-c")
Authorization realms is a platinum feature.
Backport of: #33262