Class: Himari::Services::OidcTokenEndpoint

Inherits:
Object
  • Object
show all
Defined in:
lib/himari/services/oidc_token_endpoint.rb

Defined Under Namespace

Classes: SigningKeyMissing

Instance Method Summary collapse

Constructor Details

#initialize(client_provider:, signing_key_provider:, storage:, issuer:, logger: nil) ⇒ OidcTokenEndpoint

Returns a new instance of OidcTokenEndpoint.

Parameters:



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# File 'lib/himari/services/oidc_token_endpoint.rb', line 17

def initialize(client_provider:, signing_key_provider:, storage:, issuer:, logger: nil)
  @client_provider = client_provider
  @signing_key_provider = signing_key_provider
  @storage = storage
  @issuer = issuer
  @logger = logger
end

Instance Method Details

#app(env) ⇒ Object 



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# File 'lib/himari/services/oidc_token_endpoint.rb', line 32

def app(env)
  Rack::OAuth2::Server::Token.new do |req, res|
    code_dgst = req.code ? Digest::SHA256.hexdigest(req.code) : nil
    client = @client_provider.find(id: req.client_id)
    unless client
      @logger&.warn(Himari::LogLine.new('OidcTokenEndpoint: invalid_client, no client registration', req: env['himari.request_as_log'], client_id: req.client_id, code_dgst: code_dgst))
      next req.invalid_client!
    end
    unless client.match_secret?(req.client_secret)
      @logger&.warn(Himari::LogLine.new('OidcTokenEndpoint: invalid_client, client secret mismatch', req: env['himari.request_as_log'], client: client.as_log, code_dgst: code_dgst))
      next req.invalid_client! 
    end

    case req.grant_type
    when :authorization_code
      authz = @storage.find_authorization(req.code)
      unless authz
        @logger&.warn(Himari::LogLine.new('OidcTokenEndpoint: invalid_grant, no grant code found', req: env['himari.request_as_log'], client: client.as_log))
        next req.invalid_grant! 
      end
      unless authz.valid_redirect_uri?(req.redirect_uri)
        @logger&.warn(Himari::LogLine.new('OidcTokenEndpoint: invalid_grant, redirect_uri mismatch', req: env['himari.request_as_log'], client: client.as_log, grant: authz.as_log))
        next req.invalid_grant! 
      end
      if authz.expiry <= Time.now.to_i
        @logger&.warn(Himari::LogLine.new('OidcTokenEndpoint: invalid_grant, expired grant', req: env['himari.request_as_log'], client: client.as_log, grant: authz.as_log))
        next req.invalid_grant! 
      end

      if authz.pkce?
        if req.verify_code_verifier!(authz.code_challenge, authz.code_challenge_method)
          # do nothing
        else
          # :nocov:
          @logger&.warn(Himari::LogLine.new('OidcTokenEndpoint: invalid_grant, invalid pkce', req: env['himari.request_as_log'], client: client.as_log, grant: authz.as_log))
          next req.invalid_grant!
          # :nocov:
        end
      elsif client.require_pkce
        @logger&.warn(Himari::LogLine.new('OidcTokenEndpoint: invalid_grant, pkce is mandatory', req: env['himari.request_as_log'], client: client.as_log, grant: authz.as_log))
        next req.invalid_grant!
      end

      token = AccessToken.from_authz(authz)
      @storage.put_token(token)
      res.access_token = token.to_bearer

      if authz.openid
        signing_key = @signing_key_provider.find(group: client.preferred_key_group, active: true)
        raise SigningKeyMissing unless signing_key
        res.id_token = IdToken.from_authz(authz, signing_key: signing_key, access_token: token.format.to_s, issuer: @issuer).to_jwt
      end

      @storage.delete_authorization(authz)
      @logger&.info(Himari::LogLine.new('OidcTokenEndpoint: issued', req: env['himari.request_as_log'], client: client.as_log, grant: authz.as_log, token: token.as_log, signing_key_kid: signing_key&.id))
    else
      req.unsupported_response_type!
    end
  end
end

#call(env) ⇒ Object 



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# File 'lib/himari/services/oidc_token_endpoint.rb', line 25

def call(env)
  app(env).call(env)
rescue Rack::OAuth2::Server::Abstract::Error => e
  @logger&.warn(Himari::LogLine.new('OidcTokenEndpoint: returning error', req: env['himari.request_as_log'], client: client.as_log, err: e.class.inspect, err_content: e.protocol_params))
  e.finish
end