1 # Copyright (C) The Arvados Authors. All rights reserved.
3 # SPDX-License-Identifier: AGPL-3.0
5 class ApiClientAuthorization < ArvadosModel
8 include CommonApiTemplate
9 extend CurrentApiClient
12 belongs_to :api_client
14 after_initialize :assign_random_api_token
15 serialize :scopes, Array
17 before_validation :clamp_token_expiration
19 api_accessible :user, extend: :common do |t|
23 # NB the "api_token" db column is a misnomer in that it's only the
24 # "secret" part of a token: a v1 token is just the secret, but a
25 # v2 token is "v2/uuid/secret".
27 t.add :created_by_ip_address
28 t.add :default_owner_uuid
31 t.add :last_used_by_ip_address
35 UNLOGGED_CHANGES = ['last_used_at', 'last_used_by_ip_address', 'updated_at']
37 def assign_random_api_token
38 self.api_token ||= rand(2**256).to_s(36)
45 self.user_id_changed? ? User.where(id: self.user_id_was).first.andand.uuid : self.user.andand.uuid
47 def owner_uuid_changed?
51 def modified_by_client_uuid
54 def modified_by_client_uuid=(x) end
56 def modified_by_user_uuid
59 def modified_by_user_uuid=(x) end
64 def modified_at=(x) end
66 def scopes_allow?(req_s)
67 scopes.each do |scope|
68 return true if (scope == 'all') or (scope == req_s) or
69 ((scope.end_with? '/') and (req_s.start_with? scope))
74 def scopes_allow_request?(request)
75 method = request.request_method
77 (scopes_allow?(['HEAD', request.path].join(' ')) ||
78 scopes_allow?(['GET', request.path].join(' ')))
80 scopes_allow?([method, request.path].join(' '))
85 super.except 'api_token'
88 def self.default_orders
89 ["#{table_name}.id desc"]
92 def self.remote_host(uuid_prefix:)
93 (Rails.configuration.RemoteClusters[uuid_prefix].andand["Host"]) ||
94 (Rails.configuration.RemoteClusters["*"]["Proxy"] &&
95 uuid_prefix+".arvadosapi.com")
98 def self.make_http_client(uuid_prefix:)
101 if uuid_prefix && (Rails.configuration.RemoteClusters[uuid_prefix].andand.Insecure ||
102 Rails.configuration.RemoteClusters['*'].andand.Insecure)
103 clnt.ssl_config.verify_mode = OpenSSL::SSL::VERIFY_NONE
105 # Use system CA certificates
106 ["/etc/ssl/certs/ca-certificates.crt",
107 "/etc/pki/tls/certs/ca-bundle.crt"]
108 .select { |ca_path| File.readable?(ca_path) }
109 .each { |ca_path| clnt.ssl_config.add_trust_ca(ca_path) }
114 def self.check_anonymous_user_token token
117 _, token_uuid, secret, optional = token.split('/')
118 unless token_uuid.andand.length == 27 && secret.andand.length.andand > 0 &&
119 token_uuid == Rails.configuration.ClusterID+"-gj3su-anonymouspublic"
120 # invalid v2 token, or v2 token for another user
128 # The anonymous token content and minimum length is verified in lib/config
129 if secret.length >= 0 && secret == Rails.configuration.Users.AnonymousUserToken
130 return ApiClientAuthorization.new(user: User.find_by_uuid(anonymous_user_uuid),
131 uuid: Rails.configuration.ClusterID+"-gj3su-anonymouspublic",
133 api_client: anonymous_user_token_api_client)
139 def self.check_system_root_token token
140 if token == Rails.configuration.SystemRootToken
141 return ApiClientAuthorization.new(user: User.find_by_uuid(system_user_uuid),
142 uuid: Rails.configuration.ClusterID+"-gj3su-000000000000000",
144 api_client: system_root_token_api_client)
150 def self.validate(token:, remote: nil)
151 return nil if token.nil? or token.empty?
152 remote ||= Rails.configuration.ClusterID
154 auth = self.check_anonymous_user_token(token)
159 auth = self.check_system_root_token(token)
166 stored_secret = nil # ...if different from secret
171 _, token_uuid, secret, optional = token.split('/')
172 unless token_uuid.andand.length == 27 && secret.andand.length.andand > 0
177 # if "optional" is a container uuid, check that it
178 # matches expections.
179 c = Container.where(uuid: optional).first
181 if !c.auth_uuid.nil? and c.auth_uuid != token_uuid
182 # token doesn't match the container's token
185 if !c.runtime_token.nil? and "v2/#{token_uuid}/#{secret}" != c.runtime_token
186 # token doesn't match the container's token
189 if ![Container::Locked, Container::Running].include?(c.state)
190 # container isn't locked or running, token shouldn't be used
196 # fast path: look up the token in the local database
197 auth = ApiClientAuthorization.
198 includes(:user, :api_client).
199 where('uuid=? and (expires_at is null or expires_at > CURRENT_TIMESTAMP)', token_uuid).
201 if auth && auth.user &&
202 (secret == auth.api_token ||
203 secret == OpenSSL::HMAC.hexdigest('sha1', auth.api_token, remote))
205 if token_uuid[0..4] != Rails.configuration.ClusterID
206 Rails.logger.debug "found cached remote token #{token_uuid} with secret #{secret} in local db"
211 upstream_cluster_id = token_uuid[0..4]
212 if upstream_cluster_id == Rails.configuration.ClusterID
213 # Token is supposedly issued by local cluster, but if the
214 # token were valid, we would have been found in the database
215 # in the above query.
217 elsif upstream_cluster_id.length != 5
223 # token is not a 'v2' token. It could be just the secret part
224 # ("v1 token") -- or it could be an OpenIDConnect access token,
225 # in which case either (a) the controller will have inserted a
226 # row with api_token = hmac(systemroottoken,oidctoken) before
227 # forwarding it, or (b) we'll have done that ourselves, or (c)
228 # we'll need to ask LoginCluster to validate it for us below,
229 # and then insert a local row for a faster lookup next time.
230 hmac = OpenSSL::HMAC.hexdigest('sha256', Rails.configuration.SystemRootToken, token)
231 auth = ApiClientAuthorization.
232 includes(:user, :api_client).
233 where('api_token in (?, ?) and (expires_at is null or expires_at > CURRENT_TIMESTAMP)', token, hmac).
237 elsif !Rails.configuration.Login.LoginCluster.blank? && Rails.configuration.Login.LoginCluster != Rails.configuration.ClusterID
238 # An unrecognized non-v2 token might be an OIDC Access Token
239 # that can be verified by our login cluster in the code
240 # below. If so, we'll stuff the database with hmac instead of
241 # the real OIDC token.
242 upstream_cluster_id = Rails.configuration.Login.LoginCluster
249 # Invariant: upstream_cluster_id != Rails.configuration.ClusterID
251 # In other words the remaining code in this method decides
252 # whether to accept a token that was issued by a remote cluster
253 # when the token is absent or expired in our database. To
254 # begin, we need to ask the cluster that issued the token to
256 clnt = ApiClientAuthorization.make_http_client(uuid_prefix: upstream_cluster_id)
258 host = remote_host(uuid_prefix: upstream_cluster_id)
260 Rails.logger.warn "remote authentication rejected: no host for #{upstream_cluster_id.inspect}"
265 remote_user = SafeJSON.load(
266 clnt.get_content('https://' + host + '/arvados/v1/users/current',
267 {'remote' => Rails.configuration.ClusterID},
268 {'Authorization' => 'Bearer ' + token}))
270 Rails.logger.warn "remote authentication with token #{token.inspect} failed: #{e}"
274 # Check the response is well formed.
275 if !remote_user.is_a?(Hash) || !remote_user['uuid'].is_a?(String)
276 Rails.logger.warn "remote authentication rejected: remote_user=#{remote_user.inspect}"
280 remote_user_prefix = remote_user['uuid'][0..4]
282 # Get token scope, and make sure we use the same UUID as the
283 # remote when caching the token.
286 remote_token = SafeJSON.load(
287 clnt.get_content('https://' + host + '/arvados/v1/api_client_authorizations/current',
288 {'remote' => Rails.configuration.ClusterID},
289 {'Authorization' => 'Bearer ' + token}))
290 Rails.logger.debug "retrieved remote token #{remote_token.inspect}"
291 token_uuid = remote_token['uuid']
292 if !token_uuid.match(HasUuid::UUID_REGEX) || token_uuid[0..4] != upstream_cluster_id
293 raise "remote cluster #{upstream_cluster_id} returned invalid token uuid #{token_uuid.inspect}"
295 rescue HTTPClient::BadResponseError => e
296 if e.res.status != 401
299 rev = SafeJSON.load(clnt.get_content('https://' + host + '/discovery/v1/apis/arvados/v1/rest'))['revision']
300 if rev >= '20010101' && rev < '20210503'
301 Rails.logger.warn "remote cluster #{upstream_cluster_id} at #{host} with api rev #{rev} does not provide token expiry and scopes; using scopes=['all']"
303 # remote server is new enough that it should have accepted
304 # this request if the token was valid
308 Rails.logger.warn "error getting remote token details for #{token.inspect}: #{e}"
312 # Clusters can only authenticate for their own users.
313 if remote_user_prefix != upstream_cluster_id
314 Rails.logger.warn "remote authentication rejected: claimed remote user #{remote_user_prefix} but token was issued by #{upstream_cluster_id}"
318 # Invariant: remote_user_prefix == upstream_cluster_id
319 # therefore: remote_user_prefix != Rails.configuration.ClusterID
321 # Add or update user and token in local database so we can
322 # validate subsequent requests faster.
324 if remote_user['uuid'][-22..-1] == '-tpzed-anonymouspublic'
325 # Special case: map the remote anonymous user to local anonymous user
326 remote_user['uuid'] = anonymous_user_uuid
329 user = User.find_by_uuid(remote_user['uuid'])
332 # Create a new record for this user.
333 user = User.new(uuid: remote_user['uuid'],
336 email: remote_user['email'],
337 owner_uuid: system_user_uuid)
338 user.set_initial_username(requested: remote_user['username'])
342 act_as_system_user do
343 %w[first_name last_name email prefs].each do |attr|
344 user.send(attr+'=', remote_user[attr])
347 if remote_user['uuid'][-22..-1] == '-tpzed-000000000000000'
348 user.first_name = "root"
349 user.last_name = "from cluster #{remote_user_prefix}"
354 rescue ActiveRecord::RecordInvalid, ActiveRecord::RecordNotUnique
355 Rails.logger.debug("remote user #{remote_user['uuid']} already exists, retrying...")
356 # Some other request won the race: retry fetching the user record.
357 user = User.find_by_uuid(remote_user['uuid'])
359 Rails.logger.warn("cannot find or create remote user #{remote_user['uuid']}")
364 if user.is_invited && !remote_user['is_invited']
365 # Remote user is not "invited" state, they should be unsetup, which
366 # also makes them inactive.
369 if !user.is_invited && remote_user['is_invited'] and
370 (remote_user_prefix == Rails.configuration.Login.LoginCluster or
371 Rails.configuration.Users.AutoSetupNewUsers or
372 Rails.configuration.Users.NewUsersAreActive or
373 Rails.configuration.RemoteClusters[remote_user_prefix].andand["ActivateUsers"])
377 if !user.is_active && remote_user['is_active'] && user.is_invited and
378 (remote_user_prefix == Rails.configuration.Login.LoginCluster or
379 Rails.configuration.Users.NewUsersAreActive or
380 Rails.configuration.RemoteClusters[remote_user_prefix].andand["ActivateUsers"])
381 user.update_attributes!(is_active: true)
382 elsif user.is_active && !remote_user['is_active']
383 user.update_attributes!(is_active: false)
386 if remote_user_prefix == Rails.configuration.Login.LoginCluster and
388 user.is_admin != remote_user['is_admin']
389 # Remote cluster controls our user database, including the
391 user.update_attributes!(is_admin: remote_user['is_admin'])
395 # If stored_secret is set, we save stored_secret in the database
396 # but return the real secret to the caller. This way, if we end
397 # up returning the auth record to the client, they see the same
398 # secret they supplied, instead of the HMAC we saved in the
400 stored_secret = stored_secret || secret
402 # We will accept this token (and avoid reloading the user
403 # record) for 'RemoteTokenRefresh' (default 5 minutes).
404 exp = [db_current_time + Rails.configuration.Login.RemoteTokenRefresh,
405 remote_token.andand['expires_at']].compact.min
406 scopes = remote_token.andand['scopes'] || ['all']
409 auth = ApiClientAuthorization.find_or_create_by(uuid: token_uuid) do |auth|
411 auth.api_token = stored_secret
412 auth.api_client_id = 0
414 auth.expires_at = exp
416 rescue ActiveRecord::RecordNotUnique
417 Rails.logger.debug("cached remote token #{token_uuid} already exists, retrying...")
418 # Some other request won the race: retry just once before erroring out
419 if (retries += 1) <= 1
422 Rails.logger.warn("cannot find or create cached remote token #{token_uuid}")
426 auth.update_attributes!(user: user,
427 api_token: stored_secret,
431 Rails.logger.debug "cached remote token #{token_uuid} with secret #{stored_secret} and scopes #{scopes} in local db"
432 auth.api_token = secret
448 'v2/' + uuid + '/' + api_token
451 def salted_token(remote:)
455 'v2/' + uuid + '/' + OpenSSL::HMAC.hexdigest('sha1', api_token, remote)
460 def clamp_token_expiration
461 if Rails.configuration.API.MaxTokenLifetime > 0
462 max_token_expiration = db_current_time + Rails.configuration.API.MaxTokenLifetime
463 if (self.new_record? || self.expires_at_changed?) && (self.expires_at.nil? || (self.expires_at > max_token_expiration && !current_user.andand.is_admin))
464 self.expires_at = max_token_expiration
469 def permission_to_create
470 current_user.andand.is_admin or (current_user.andand.id == self.user_id)
473 def permission_to_update
474 permission_to_create && !uuid_changed? &&
475 (current_user.andand.is_admin || !user_id_changed?)
479 super unless (saved_changes.keys - UNLOGGED_CHANGES).empty?