[keycloak-dev] Implementations for KEYCLOAK-2209

[Stian Thorgersen]

Reading your email I couldn't figure out how you assign a password policy
to a user. I think it would be best if there's an ordered/prioritized list
of password policies. Each policy would have a set of conditions on whether
or not the policy should be applied to a specific user. Where conditions
should include member/not-member of a specific group, has/doesn't have a
specific role, a specific attribute key/value or if a user belongs to a
specific user fed provider. If none matches the last in the list should be
used. I find having more than one policy apply to a specific user just
confusing so it should be the first policy that matches for a user that is
used.

Now with regards to implementation it would make sense to convert password
policies to use component storage rather than add additional
tables/attributes for password policies. The single string password policy
was introduced before we had component storage and it is our plan to
eventually convert password policies to use component storage. Component
storage is much more flexible and powerful than what we have today for
password policies. It allows the provider itself to expose what
configuration applies to it.

On 12 September 2017 at 19:59, Ricardo Martin Camarero <rmartinc at redhat.com>
wrote:

> Hi team,
>
> I'm forwarding this email to the list following Stian's recommendation.
>
> I needed to learn more about keycloak (how to manage the maven project,
> how to add a modification, how to test it, and so on and so forth), so I
> decided to start looking the code and try to help when I have some free
> time. As I filed an internal RFE because one customer wanted a similar
> solution than the one specified in KEYCLOAK-2209 I started to implement
> something. Now I have two possible ideas that are not completely
> implemented (I haven't done any group use for example). Both ideas have
> similarities:
>
> * I have extended the database to include a REALM_PASSWORD_POLICY_GROUP
> table that contains more policies associated to the realm. I thought
> about using an attribute but I decided to extend the database because
> the current policy attribute is a long string (length 2550). This way in
> the realm (policies page) now you can configure more than one password
> policy (default is the current one and you can add new policies that are
> saved in the new table with a name).
>
> * The user has a new attribute that contains the password policy, in
> this case I have re-used an attribute (I'm not sure about this idea, now
> I think using a new column would be better but I needed a multiple
> attribute for option 2).
>
> * In both solutions I needed to extend the PasswordPolicyProvider
> interface to pass the config to the two validate methods:
>
>   PolicyError validate(RealmModel realm, UserModel user, String
> password, Object config);
>
>   I think there is a bug in this part in current master branch, because
> regex policy is multiple, and you cannot assign two different regex
> providers in the same policy (PasswordPolicy stores the configuration in
> a Map<String, Object>, so you cannot have two different configurations
> for the same type, if you assign two regex providers they are
> transformed into one as soon as you save the policy).
>
>
> Now the two implementations:
>
> 1) The first idea let us configure to a user one password policy. My
> branch is this one:
>
>   https://github.com/rmartinc/keycloak/tree/password-policy-groups
>
>   In this solution the user has a combo (only one policy can be assigned
> to a user) and only one policy is applied to that user. My idea was
> extending the idea using groups and priorities. Password policies will
> have a priority, and only one policy will apply to a user (from all the
> possible policies the one with the higher priority applies). For the
> moment I only modified keycloak to have a different policy in the user
> (no priorities or group policies).
>
> 2) The second idea follows the description in 2209. The branch is the
> following:
>
>   https://github.com/rmartinc/keycloak/tree/password-policy-groups-multi
>
>   Here the user can have multiple password policies. The definitive
> policy is a merge between all the policies applied to the user. To do
> this I needed to extend the PasswordPolicyProvider interface even more,
> in order to have a compare method that returns which policy is more
> restrictive. Extending this idea to groups is just merging more policies.
>
>
> You can test my ideas (I think both of them are working). If you are
> interested please let me know which idea you think is better (I'm not
> completely sure, now I think that I prefer option 1, although option 2
> is more similar to the RFE description, I think the latter is very
> confusing). If you like one of them, I'll try to finish the
> implementation (now there are no tests and some decisions I took maybe
> are wrong). If you think this is not needed or it's not the time to
> implement this RFE don't worry, it's ok, I needed to play with keycloak,
> and that part is done.
>
> Regards!
>
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