Module: Legion::Rbac::KerberosClaimsMapper

Extended by:
Logging::Helper
Defined in:
lib/legion/rbac/kerberos_claims_mapper.rb

Constant Summary collapse

DEFAULT_ROLE = 
'worker'
DEFAULT_TEAM_KEYS = 
%i[team legion_team].freeze

Class Method Summary collapse

Class Method Details

.entra_fallback_claims(principal:, role_map:, default_role:, team_resolution:, profile:) ⇒ Object 



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# File 'lib/legion/rbac/kerberos_claims_mapper.rb', line 120

def entra_fallback_claims(principal:, role_map:, default_role:, team_resolution:, profile:)
  entra_claims = { sub: principal, preferred_username: principal, **profile }.compact
  result = EntraClaimsMapper.map_claims(
    entra_claims,
    role_map:     role_map,
    default_role: default_role,
    **team_resolution
  )
  result&.merge(**profile, auth_method: 'kerberos', team: result[:team]) || mapped_claims(
    principal:       principal,
    groups:          [],
    role_map:        role_map,
    default_role:    default_role,
    team_resolution: team_resolution,
    profile:         profile
  )
end

.extract_team_resolution(profile) ⇒ Object 



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# File 'lib/legion/rbac/kerberos_claims_mapper.rb', line 100

def extract_team_resolution(profile)
  sanitized_profile = profile.dup
  team_resolution = {
    team_keys: sanitized_profile.delete(:team_keys) || DEFAULT_TEAM_KEYS,
    team_map:  sanitized_profile.delete(:team_map)
  }
  [sanitized_profile, team_resolution]
end

.map(principal:, groups:, role_map: {}, default_role: DEFAULT_ROLE, team_keys: DEFAULT_TEAM_KEYS, team_map: nil, **profile) ⇒ Object 



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# File 'lib/legion/rbac/kerberos_claims_mapper.rb', line 15

def map(principal:, groups:, role_map: {}, default_role: DEFAULT_ROLE, team_keys: DEFAULT_TEAM_KEYS,
        team_map: nil, **profile)
  parts = principal.split('@', 2)
  username = parts.first
  realm = parts.length > 1 ? parts.last : nil
  roles = Array(groups).filter_map { |g| role_map[g] }.uniq
  used_default_role = roles.empty?
  roles = [default_role] if used_default_role
  team = resolve_team(profile, team_keys: team_keys, team_map: team_map)

  claims = {
    sub:            username,
    samaccountname: username,
    ad_fqdn:        realm&.downcase,
    roles:          roles,
    scope:          'human',
    auth_method:    'kerberos',
    **profile,
    team:           team
  }.compact
  log.info(
    "RBAC kerberos_claims map principal=#{username} roles=#{claims[:roles].size} " \
    "default_role=#{used_default_role} realm=#{claims[:ad_fqdn]} team=#{claims[:team] || 'none'}"
  )
  claims
rescue StandardError => e
  handle_exception(e, level: :error, operation: 'rbac.kerberos_claims_mapper.map', principal: principal)
  raise
end

.map_with_fallback(principal:, groups: nil, fallback: :entra, role_map: {}, default_role: DEFAULT_ROLE, **profile) ⇒ Object 



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# File 'lib/legion/rbac/kerberos_claims_mapper.rb', line 45

def map_with_fallback(principal:, groups: nil, fallback: :entra, role_map: {},
                      default_role: DEFAULT_ROLE, **profile)
  profile, team_resolution = extract_team_resolution(profile)
  if groups&.any?
    claims = mapped_claims(
      principal:       principal,
      groups:          groups,
      role_map:        role_map,
      default_role:    default_role,
      team_resolution: team_resolution,
      profile:         profile
    )
    path = 'groups'
  elsif fallback == :entra && defined?(Legion::Rbac::EntraClaimsMapper)
    claims = entra_fallback_claims(
      principal:       principal,
      role_map:        role_map,
      default_role:    default_role,
      team_resolution: team_resolution,
      profile:         profile
    )
    path = 'entra'
  else
    claims = mapped_claims(
      principal:       principal,
      groups:          [],
      role_map:        role_map,
      default_role:    default_role,
      team_resolution: team_resolution,
      profile:         profile
    )
    path = 'default_role'
  end
  log.info("RBAC kerberos_claims fallback principal=#{principal} path=#{path}")
  claims
rescue StandardError => e
  handle_exception(
    e,
    level:     :error,
    operation: 'rbac.kerberos_claims_mapper.map_with_fallback',
    principal: principal,
    fallback:  fallback
  )
  raise
end

.mapped_claims(principal:, groups:, role_map:, default_role:, team_resolution:, profile:) ⇒ Object 



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# File 'lib/legion/rbac/kerberos_claims_mapper.rb', line 109

def mapped_claims(principal:, groups:, role_map:, default_role:, team_resolution:, profile:)
  map(
    principal:    principal,
    groups:       groups,
    role_map:     role_map,
    default_role: default_role,
    **team_resolution,
    **profile
  )
end

.resolve_team(profile, team_keys:, team_map:) ⇒ Object 



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# File 'lib/legion/rbac/kerberos_claims_mapper.rb', line 91

def resolve_team(profile, team_keys:, team_map:)
  Array(team_keys).each do |key|
    value = profile[key] || profile[key.to_s]
    return value if value && (team_map.nil? || team_map.empty?)
    return team_map[value] || team_map[value.to_s] || team_map[value.to_sym] if value
  end
  nil
end