+# Copyright (C) The Arvados Authors. All rights reserved.
+#
+# SPDX-License-Identifier: AGPL-3.0
+
class ApiClientAuthorization < ArvadosModel
+ include HasUuid
include KindAndEtag
include CommonApiTemplate
+ extend CurrentApiClient
belongs_to :api_client
belongs_to :user
t.add :owner_uuid
t.add :user_id
t.add :api_client_id
+ # NB the "api_token" db column is a misnomer in that it's only the
+ # "secret" part of a token: a v1 token is just the secret, but a
+ # v2 token is "v2/uuid/secret".
t.add :api_token
t.add :created_by_ip_address
t.add :default_owner_uuid
self.user.andand.uuid
end
def owner_uuid_was
- self.user_id_changed? ? User.find(self.user_id_was).andand.uuid : self.user.andand.uuid
+ self.user_id_changed? ? User.where(id: self.user_id_was).first.andand.uuid : self.user.andand.uuid
end
def owner_uuid_changed?
self.user_id_changed?
end
- def uuid
- self.api_token
- end
- def uuid=(x) end
- def uuid_was
- self.api_token_was
- end
- def uuid_changed?
- self.api_token_changed?
- end
-
def modified_by_client_uuid
nil
end
end
def scopes_allow_request?(request)
- scopes_allow? [request.request_method, request.path].join(' ')
+ method = request.request_method
+ if method == 'HEAD'
+ (scopes_allow?(['HEAD', request.path].join(' ')) ||
+ scopes_allow?(['GET', request.path].join(' ')))
+ else
+ scopes_allow?([method, request.path].join(' '))
+ end
end
def logged_attributes
- attrs = attributes.dup
- attrs.delete('api_token')
- attrs
+ super.except 'api_token'
+ end
+
+ def self.default_orders
+ ["#{table_name}.id desc"]
+ end
+
+ def self.remote_host(uuid_prefix:)
+ (Rails.configuration.RemoteClusters[uuid_prefix].andand["Host"]) ||
+ (Rails.configuration.RemoteClusters["*"]["Proxy"] &&
+ uuid_prefix+".arvadosapi.com")
+ end
+
+ def self.make_http_client(uuid_prefix:)
+ clnt = HTTPClient.new
+
+ if uuid_prefix && (Rails.configuration.RemoteClusters[uuid_prefix].andand.Insecure ||
+ Rails.configuration.RemoteClusters['*'].andand.Insecure)
+ clnt.ssl_config.verify_mode = OpenSSL::SSL::VERIFY_NONE
+ else
+ # Use system CA certificates
+ ["/etc/ssl/certs/ca-certificates.crt",
+ "/etc/pki/tls/certs/ca-bundle.crt"]
+ .select { |ca_path| File.readable?(ca_path) }
+ .each { |ca_path| clnt.ssl_config.add_trust_ca(ca_path) }
+ end
+ clnt
+ end
+
+ def self.validate(token:, remote: nil)
+ return nil if !token
+ remote ||= Rails.configuration.ClusterID
+
+ case token[0..2]
+ when 'v2/'
+ _, token_uuid, secret, optional = token.split('/')
+ unless token_uuid.andand.length == 27 && secret.andand.length.andand > 0
+ return nil
+ end
+
+ if !optional.nil?
+ # if "optional" is a container uuid, check that it
+ # matches expections.
+ c = Container.where(uuid: optional).first
+ if !c.nil?
+ if !c.auth_uuid.nil? and c.auth_uuid != token_uuid
+ # token doesn't match the container's token
+ return nil
+ end
+ if !c.runtime_token.nil? and "v2/#{token_uuid}/#{secret}" != c.runtime_token
+ # token doesn't match the container's token
+ return nil
+ end
+ if ![Container::Locked, Container::Running].include?(c.state)
+ # container isn't locked or running, token shouldn't be used
+ return nil
+ end
+ end
+ end
+
+ # fast path: look up the token in the local database
+ auth = ApiClientAuthorization.
+ includes(:user, :api_client).
+ where('uuid=? and (expires_at is null or expires_at > CURRENT_TIMESTAMP)', token_uuid).
+ first
+ if auth && auth.user &&
+ (secret == auth.api_token ||
+ secret == OpenSSL::HMAC.hexdigest('sha1', auth.api_token, remote))
+ # found it
+ return auth
+ end
+
+ token_uuid_prefix = token_uuid[0..4]
+ if token_uuid_prefix == Rails.configuration.ClusterID
+ # Token is supposedly issued by local cluster, but if the
+ # token were valid, we would have been found in the database
+ # in the above query.
+ return nil
+ elsif token_uuid_prefix.length != 5
+ # malformed
+ return nil
+ end
+
+ # Invariant: token_uuid_prefix != Rails.configuration.ClusterID
+ #
+ # In other words the remaing code in this method below is the
+ # case that determines whether to accept a token that was issued
+ # by a remote cluster when the token absent or expired in our
+ # database. To begin, we need to ask the cluster that issued
+ # the token to [re]validate it.
+ clnt = ApiClientAuthorization.make_http_client(uuid_prefix: token_uuid_prefix)
+
+ host = remote_host(uuid_prefix: token_uuid_prefix)
+ if !host
+ Rails.logger.warn "remote authentication rejected: no host for #{token_uuid_prefix.inspect}"
+ return nil
+ end
+
+ begin
+ remote_user = SafeJSON.load(
+ clnt.get_content('https://' + host + '/arvados/v1/users/current',
+ {'remote' => Rails.configuration.ClusterID},
+ {'Authorization' => 'Bearer ' + token}))
+ rescue => e
+ Rails.logger.warn "remote authentication with token #{token.inspect} failed: #{e}"
+ return nil
+ end
+
+ # Check the response is well formed.
+ if !remote_user.is_a?(Hash) || !remote_user['uuid'].is_a?(String)
+ Rails.logger.warn "remote authentication rejected: remote_user=#{remote_user.inspect}"
+ return nil
+ end
+
+ remote_user_prefix = remote_user['uuid'][0..4]
+
+ # Clusters can only authenticate for their own users.
+ if remote_user_prefix != token_uuid_prefix
+ Rails.logger.warn "remote authentication rejected: claimed remote user #{remote_user_prefix} but token was issued by #{token_uuid_prefix}"
+ return nil
+ end
+
+ # Invariant: remote_user_prefix == token_uuid_prefix
+ # therefore: remote_user_prefix != Rails.configuration.ClusterID
+
+ # Add or update user and token in local database so we can
+ # validate subsequent requests faster.
+
+ user = User.find_by_uuid(remote_user['uuid'])
+
+ if !user
+ # Create a new record for this user.
+ user = User.new(uuid: remote_user['uuid'],
+ is_active: false,
+ is_admin: false,
+ email: remote_user['email'],
+ owner_uuid: system_user_uuid)
+ user.set_initial_username(requested: remote_user['username'])
+ end
+
+ # Sync user record.
+ if remote_user_prefix == Rails.configuration.Login.LoginCluster
+ # Remote cluster controls our user database, copy both
+ # 'is_active' and 'is_admin'
+ user.is_active = remote_user['is_active']
+ user.is_admin = remote_user['is_admin']
+ else
+ if Rails.configuration.Users.NewUsersAreActive ||
+ Rails.configuration.RemoteClusters[remote_user_prefix].andand["ActivateUsers"]
+ # Default policy is to activate users, so match activate
+ # with the remote record.
+ user.is_active = remote_user['is_active']
+ elsif !remote_user['is_active']
+ # Deactivate user if the remote is inactive, otherwise don't
+ # change 'is_active'.
+ user.is_active = false
+ end
+ end
+
+ %w[first_name last_name email prefs].each do |attr|
+ user.send(attr+'=', remote_user[attr])
+ end
+
+ act_as_system_user do
+ user.save!
+
+ # We will accept this token (and avoid reloading the user
+ # record) for 'RemoteTokenRefresh' (default 5 minutes).
+ # Possible todo:
+ # Request the actual api_client_auth record from the remote
+ # server in case it wants the token to expire sooner.
+ auth = ApiClientAuthorization.find_or_create_by(uuid: token_uuid) do |auth|
+ auth.user = user
+ auth.api_client_id = 0
+ end
+ auth.update_attributes!(user: user,
+ api_token: secret,
+ api_client_id: 0,
+ expires_at: Time.now + Rails.configuration.Login.RemoteTokenRefresh)
+ end
+ return auth
+ else
+ # token is not a 'v2' token
+ auth = ApiClientAuthorization.
+ includes(:user, :api_client).
+ where('api_token=? and (expires_at is null or expires_at > CURRENT_TIMESTAMP)', token).
+ first
+ if auth && auth.user
+ return auth
+ end
+ end
+
+ return nil
+ end
+
+ def token
+ v2token
+ end
+
+ def v1token
+ api_token
+ end
+
+ def v2token
+ 'v2/' + uuid + '/' + api_token
+ end
+
+ def salted_token(remote:)
+ if remote.nil?
+ token
+ end
+ 'v2/' + uuid + '/' + OpenSSL::HMAC.hexdigest('sha1', api_token, remote)
end
protected
end
def permission_to_update
- (permission_to_create and
- not self.user_id_changed? and
- not self.owner_uuid_changed?)
+ permission_to_create && !uuid_changed? &&
+ (current_user.andand.is_admin || !user_id_changed?)
end
def log_update
projects / arvados.git / blobdiff