# Note: This only returns permission links. It does not account for
# permissions obtained via user.is_admin or
# user.uuid==object.owner_uuid.
- has_many :permissions, :foreign_key => :head_uuid, :class_name => 'Link', :primary_key => :uuid, :conditions => "link_class = 'permission'", dependent: :destroy
+ has_many :permissions, :foreign_key => :head_uuid, :class_name => 'Link', :primary_key => :uuid, :conditions => "link_class = 'permission'"
class PermissionDeniedError < StandardError
def http_status
def self.searchable_columns operator
textonly_operator = !operator.match(/[<=>]/)
- self.columns.collect do |col|
- if [:string, :text].index(col.type)
- col.name
- elsif !textonly_operator and [:datetime, :integer].index(col.type)
- col.name
+ self.columns.select do |col|
+ case col.type
+ when :string, :text
+ true
+ when :datetime, :integer, :boolean
+ !textonly_operator
+ else
+ false
end
- end.compact
+ end.map(&:name)
end
def self.attribute_column attr
# Get rid of troublesome nils
users_list.compact!
+ # Load optional keyword arguments, if they exist.
+ if users_list.last.is_a? Hash
+ kwargs = users_list.pop
+ else
+ kwargs = {}
+ end
+
# Check if any of the users are admin. If so, we're done.
if users_list.select { |u| u.is_admin }.empty?
collect { |uuid| sanitize(uuid) }.join(', ')
sql_conds = []
sql_params = []
+ sql_table = kwargs.fetch(:table_name, table_name)
or_object_uuid = ''
# This row is owned by a member of users_list, or owned by a group
# to this row, or to the owner of this row (see join() below).
permitted_uuids = "(SELECT head_uuid FROM links WHERE link_class='permission' AND tail_uuid IN (#{sanitized_uuid_list}))"
- sql_conds += ["#{table_name}.owner_uuid in (?)",
- "#{table_name}.uuid in (?)",
- "#{table_name}.uuid IN #{permitted_uuids}"]
+ sql_conds += ["#{sql_table}.owner_uuid in (?)",
+ "#{sql_table}.uuid in (?)",
+ "#{sql_table}.uuid IN #{permitted_uuids}"]
sql_params += [uuid_list, user_uuids]
- if self == Link and users_list.any?
+ if sql_table == "links" and users_list.any?
# This row is a 'permission' or 'resources' link class
# The uuid for a member of users_list is referenced in either the head
# or tail of the link
- sql_conds += ["(#{table_name}.link_class in (#{sanitize 'permission'}, #{sanitize 'resources'}) AND (#{table_name}.head_uuid IN (?) OR #{table_name}.tail_uuid IN (?)))"]
+ sql_conds += ["(#{sql_table}.link_class in (#{sanitize 'permission'}, #{sanitize 'resources'}) AND (#{sql_table}.head_uuid IN (?) OR #{sql_table}.tail_uuid IN (?)))"]
sql_params += [user_uuids, user_uuids]
end
- if self == Log and users_list.any?
+ if sql_table == "logs" and users_list.any?
# Link head points to the object described by this row
- sql_conds += ["#{table_name}.object_uuid IN #{permitted_uuids}"]
+ sql_conds += ["#{sql_table}.object_uuid IN #{permitted_uuids}"]
# This object described by this row is owned by this user, or owned by a group readable by this user
- sql_conds += ["#{table_name}.object_owner_uuid in (?)"]
+ sql_conds += ["#{sql_table}.object_owner_uuid in (?)"]
sql_params += [uuid_list]
end
attributes
end
+ def has_permission? perm_type, target_uuid
+ Link.where(link_class: "permission",
+ name: perm_type,
+ tail_uuid: uuid,
+ head_uuid: target_uuid).any?
+ end
+
protected
def ensure_ownership_path_leads_to_user
def ensure_owner_uuid_is_permitted
raise PermissionDeniedError if !current_user
- if respond_to? :owner_uuid=
+ if new_record? and respond_to? :owner_uuid=
self.owner_uuid ||= current_user.uuid
end
- if self.owner_uuid_changed?
- if current_user.uuid == self.owner_uuid or
- current_user.can? write: self.owner_uuid
- # current_user is, or has :write permission on, the new owner
- else
- logger.warn "User #{current_user.uuid} tried to change owner_uuid of #{self.class.to_s} #{self.uuid} to #{self.owner_uuid} but does not have permission to write to #{self.owner_uuid}"
- raise PermissionDeniedError
- end
- end
- if new_record?
- return true
- elsif current_user.uuid == self.owner_uuid_was or
+ # Verify permission to write to old owner (unless owner_uuid was
+ # nil -- or hasn't changed, in which case the following
+ # "permission to write to new owner" block will take care of us)
+ unless !owner_uuid_changed? or
+ owner_uuid_was.nil? or
+ current_user.uuid == self.owner_uuid_was or
current_user.uuid == self.uuid or
current_user.can? write: self.owner_uuid_was
- # current user is, or has :write permission on, the previous owner
- return true
- else
- logger.warn "User #{current_user.uuid} tried to modify #{self.class.to_s} #{self.uuid} but does not have permission to write #{self.owner_uuid_was}"
+ logger.warn "User #{current_user.uuid} tried to modify #{self.class.to_s} #{uuid} but does not have permission to write old owner_uuid #{owner_uuid_was}"
+ errors.add :owner_uuid, "cannot be changed without write permission on old owner"
+ raise PermissionDeniedError
+ end
+ # Verify permission to write to new owner
+ unless current_user == self or current_user.can? write: owner_uuid
+ logger.warn "User #{current_user.uuid} tried to modify #{self.class.to_s} #{uuid} but does not have permission to write new owner_uuid #{owner_uuid}"
+ errors.add :owner_uuid, "cannot be changed without write permission on new owner"
raise PermissionDeniedError
end
end
nil
end
+ # ArvadosModel.find_by_uuid needs extra magic to allow it to return
+ # an object in any class.
+ def self.find_by_uuid uuid
+ if self == ArvadosModel
+ # If called directly as ArvadosModel.find_by_uuid rather than via subclass,
+ # delegate to the appropriate subclass based on the given uuid.
+ self.resource_class_for_uuid(uuid).find_by_uuid(uuid)
+ else
+ super
+ end
+ end
+
def log_start_state
@old_etag = etag
@old_attributes = logged_attributes
projects / arvados.git / blobdiff