Module: Hydra::PolicyAwareAccessControlsEnforcement

Defined in:
lib/hydra/policy_aware_access_controls_enforcement.rb

Overview

Repeats access controls evaluation methods, but checks against a governing “Policy” object (or “Collection” object) that provides inherited access controls.

Instance Method Summary collapse

Instance Method Details

#apply_gated_discovery(solr_parameters) ⇒ Object

Extends Hydra::AccessControlsEnforcement.apply_gated_discovery to reflect policy-provided access appends the result of policy_clauses into the :fq

Parameters:

  • solr_parameters —

    the current solr parameters

  • user_parameters —

    the current user-subitted parameters



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# File 'lib/hydra/policy_aware_access_controls_enforcement.rb', line 8

def apply_gated_discovery(solr_parameters)
  super
  logger.debug("POLICY-aware Solr parameters: #{ solr_parameters.inspect }")
end

#apply_policy_group_permissions(permission_types = discovery_permissions) ⇒ Object 



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# File 'lib/hydra/policy_aware_access_controls_enforcement.rb', line 32

def apply_policy_group_permissions(permission_types = discovery_permissions)
    # for groups
    user_access_filters = []
    current_ability.user_groups.each_with_index do |group, i|
      permission_types.each do |type|
        user_access_filters << escape_filter(Hydra.config.permissions.inheritable[type.to_sym].group, group)
      end
    end
    user_access_filters
end

#apply_policy_user_permissions(permission_types = discovery_permissions) ⇒ Object 



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# File 'lib/hydra/policy_aware_access_controls_enforcement.rb', line 43

def apply_policy_user_permissions(permission_types = discovery_permissions)
  # for individual user access
  user = current_ability.current_user
  return [] unless user && user.user_key.present?
  permission_types.map do |type|
    escape_filter(Hydra.config.permissions.inheritable[type.to_sym].individual, user.user_key)
  end
end

#discovery_permissions ⇒ Object

Override method from blacklight-access_controls



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# File 'lib/hydra/policy_aware_access_controls_enforcement.rb', line 53

def discovery_permissions
  @discovery_permissions ||= ["edit", "discover", "read"]
end

#policies_with_access ⇒ Object

find all the policies that grant discover/read/edit permissions to this user or any of its groups



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# File 'lib/hydra/policy_aware_access_controls_enforcement.rb', line 21

def policies_with_access
  #### TODO -- Memoize this and put it in the session?
  user_access_filters = []
  # Grant access based on user id & group
  user_access_filters += apply_policy_group_permissions(discovery_permissions)
  user_access_filters += apply_policy_user_permissions(discovery_permissions)
  result = policy_class.search_with_conditions( user_access_filters.join(" OR "), fl: "id", rows: policy_class.count )
  logger.debug "get policies: #{result}\n\n"
  result.map {|h| h['id']}
end

#policy_class ⇒ Object

Returns the Model used for AdminPolicy objects. You can set this by overriding this method or setting Hydra.config[:policy_class] Defults to Hydra::AdminPolicy



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# File 'lib/hydra/policy_aware_access_controls_enforcement.rb', line 60

def policy_class
  Hydra.config.permissions.policy_class || Hydra::AdminPolicy
end

#policy_clauses ⇒ Object

returns solr query for finding all objects whose policies grant discover access to current_user



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# File 'lib/hydra/policy_aware_access_controls_enforcement.rb', line 14

def policy_clauses
  policy_ids = policies_with_access
  return nil if policy_ids.empty?
  '(' + policy_ids.map {|id| ActiveFedora::SolrQueryBuilder.construct_query_for_rel(isGovernedBy: id)}.join(' OR '.freeze) + ')'
end