after_create :log_create
after_update :log_update
after_destroy :log_destroy
+ after_find :convert_serialized_symbols_to_strings
+ before_validation :normalize_collection_uuids
validate :ensure_serialized_attribute_type
- validate :normalize_collection_uuids
validate :ensure_valid_uuids
# 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
end
end
+ class AlreadyLockedError < StandardError
+ def http_status
+ 403
+ end
+ end
+
class UnauthorizedError < StandardError
def http_status
401
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
self.columns.select { |col| col.name == attr.to_s }.first
end
- # Return nil if current user is not allowed to see the list of
- # writers. Otherwise, return a list of user_ and group_uuids with
- # write permission. (If not returning nil, current_user is always in
- # the list because can_manage permission is needed to see the list
- # of writers.)
+ def self.attributes_required_columns
+ # This method returns a hash. Each key is the name of an API attribute,
+ # and it's mapped to a list of database columns that must be fetched
+ # to generate that attribute.
+ # This implementation generates a simple map of attributes to
+ # matching column names. Subclasses can override this method
+ # to specify that method-backed API attributes need to fetch
+ # specific columns from the database.
+ all_columns = columns.map(&:name)
+ api_column_map = Hash.new { |hash, key| hash[key] = [] }
+ methods.grep(/^api_accessible_\w+$/).each do |method_name|
+ next if method_name == :api_accessible_attributes
+ send(method_name).each_pair do |api_attr_name, col_name|
+ col_name = col_name.to_s
+ if all_columns.include?(col_name)
+ api_column_map[api_attr_name.to_s] |= [col_name]
+ end
+ end
+ end
+ api_column_map
+ end
+
+ # If current user can manage the object, return an array of uuids of
+ # users and groups that have permission to write the object. The
+ # first two elements are always [self.owner_uuid, current user's
+ # uuid].
+ #
+ # If current user can write but not manage the object, return
+ # [self.owner_uuid, current user's uuid].
+ #
+ # If current user cannot write this object, just return
+ # [self.owner_uuid].
def writable_by
unless (owner_uuid == current_user.uuid or
current_user.is_admin or
- current_user.groups_i_can(:manage).index(owner_uuid))
- return nil
+ (current_user.groups_i_can(:manage) & [uuid, owner_uuid]).any?)
+ if ((current_user.groups_i_can(:write) + [current_user.uuid]) &
+ [uuid, owner_uuid]).any?
+ return [owner_uuid, current_user.uuid]
+ else
+ return [owner_uuid]
+ end
end
[owner_uuid, current_user.uuid] + permissions.collect do |p|
if ['can_write', 'can_manage'].index p.name
# 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?
+ if users_list.select { |u| u.is_admin }.any?
+ return self
+ end
+
+ # Collect the uuids for each user and any groups readable by each user.
+ user_uuids = users_list.map { |u| u.uuid }
+ uuid_list = user_uuids + users_list.flat_map { |u| u.groups_i_can(:read) }
+ 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
+ # readable by a member of users_list
+ # or
+ # This row uuid is the uuid of a member of users_list
+ # or
+ # A permission link exists ('write' and 'manage' implicitly include
+ # 'read') from a member of users_list, or a group readable by users_list,
+ # to this row, or to the owner of this row (see join() below).
+ sql_conds += ["#{sql_table}.uuid in (?)"]
+ sql_params += [user_uuids]
+
+ if uuid_list.any?
+ sql_conds += ["#{sql_table}.owner_uuid in (?)"]
+ sql_params += [uuid_list]
- # Collect the uuids for each user and any groups readable by each user.
- user_uuids = users_list.map { |u| u.uuid }
- uuid_list = user_uuids + users_list.flat_map { |u| u.groups_i_can(:read) }
sanitized_uuid_list = uuid_list.
collect { |uuid| sanitize(uuid) }.join(', ')
- sql_conds = []
- sql_params = []
- or_object_uuid = ''
-
- # This row is owned by a member of users_list, or owned by a group
- # readable by a member of users_list
- # or
- # This row uuid is the uuid of a member of users_list
- # or
- # A permission link exists ('write' and 'manage' implicitly include
- # 'read') from a member of users_list, or a group readable by users_list,
- # 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 += ["#{sql_table}.uuid IN #{permitted_uuids}"]
+ end
- sql_conds += ["#{table_name}.owner_uuid in (?)",
- "#{table_name}.uuid in (?)",
- "#{table_name}.uuid IN #{permitted_uuids}"]
- sql_params += [uuid_list, user_uuids]
-
- if self == Link 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_params += [user_uuids, user_uuids]
- end
-
- if self == Log and users_list.any?
- # Link head points to the object described by this row
- sql_conds += ["#{table_name}.object_uuid IN #{permitted_uuids}"]
+ 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 += ["(#{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
- # 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_params += [uuid_list]
- end
+ if sql_table == "logs" and users_list.any?
+ # Link head points to the object described by this row
+ sql_conds += ["#{sql_table}.object_uuid IN #{permitted_uuids}"]
- # Link head points to this row, or to the owner of this row (the thing to be read)
- #
- # Link tail originates from this user, or a group that is readable by this
- # user (the identity with authorization to read)
- #
- # Link class is 'permission' ('write' and 'manage' implicitly include 'read')
- where(sql_conds.join(' OR '), *sql_params)
- else
- # At least one user is admin, so don't bother to apply any restrictions.
- self
+ # This object described by this row is owned by this user, or owned by a group readable by this user
+ sql_conds += ["#{sql_table}.object_owner_uuid in (?)"]
+ sql_params += [uuid_list]
end
+
+ # Link head points to this row, or to the owner of this row (the
+ # thing to be read)
+ #
+ # Link tail originates from this user, or a group that is readable
+ # by this user (the identity with authorization to read)
+ #
+ # Link class is 'permission' ('write' and 'manage' implicitly
+ # include 'read')
+ where(sql_conds.join(' OR '), *sql_params)
end
def logged_attributes
if new_record? or owner_uuid_changed?
uuid_in_path = {owner_uuid => true, uuid => true}
x = owner_uuid
- while (owner_class = self.class.resource_class_for_uuid(x)) != User
+ while (owner_class = ArvadosModel::resource_class_for_uuid(x)) != User
begin
if x == uuid
# Test for cycles with the new version, not the DB contents
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
+
+ if self.owner_uuid.nil?
+ errors.add :owner_uuid, "cannot be nil"
+ raise PermissionDeniedError
+ end
+
+ rsc_class = ArvadosModel::resource_class_for_uuid owner_uuid
+ unless rsc_class == User or rsc_class == Group
+ errors.add :owner_uuid, "must be set to User or Group"
+ raise PermissionDeniedError
end
- if new_record?
- return true
- elsif current_user.uuid == self.owner_uuid_was or
+
+ # Verify "write" permission on old owner
+ # default fail unless one of:
+ # owner_uuid did not change
+ # previous owner_uuid is nil
+ # current user is the old owner
+ # current user is this object
+ # current user can_write old owner
+ 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 "write" permission on new owner
+ # default fail unless one of:
+ # current_user is this object
+ # current user can_write 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
+
+ true
end
def ensure_permission_to_save
true
end
+ def self.has_symbols? x
+ if x.is_a? Hash
+ x.each do |k,v|
+ return true if has_symbols?(k) or has_symbols?(v)
+ end
+ false
+ elsif x.is_a? Array
+ x.each do |k|
+ return true if has_symbols?(k)
+ end
+ false
+ else
+ (x.class == Symbol)
+ end
+ end
+
+ def self.recursive_stringify x
+ if x.is_a? Hash
+ Hash[x.collect do |k,v|
+ [recursive_stringify(k), recursive_stringify(v)]
+ end]
+ elsif x.is_a? Array
+ x.collect do |k|
+ recursive_stringify k
+ end
+ elsif x.is_a? Symbol
+ x.to_s
+ else
+ x
+ end
+ end
+
def ensure_serialized_attribute_type
# Specifying a type in the "serialize" declaration causes rails to
# raise an exception if a different data type is retrieved from
# developer.
self.class.serialized_attributes.each do |colname, attr|
if attr.object_class
- unless self.attributes[colname].is_a? attr.object_class
- self.errors.add colname.to_sym, "must be a #{attr.object_class.to_s}"
+ if self.attributes[colname].class != attr.object_class
+ self.errors.add colname.to_sym, "must be a #{attr.object_class.to_s}, not a #{self.attributes[colname].class.to_s}"
+ elsif self.class.has_symbols? attributes[colname]
+ self.errors.add colname.to_sym, "must not contain symbols: #{attributes[colname].inspect}"
end
end
end
end
+ def convert_serialized_symbols_to_strings
+ # ensure_serialized_attribute_type should prevent symbols from
+ # getting into the database in the first place. If someone managed
+ # to get them into the database (perhaps using an older version)
+ # we'll convert symbols to strings when loading from the
+ # database. (Otherwise, loading and saving an object with existing
+ # symbols in a serialized field will crash.)
+ self.class.serialized_attributes.each do |colname, attr|
+ if self.class.has_symbols? attributes[colname]
+ attributes[colname] = self.class.recursive_stringify attributes[colname]
+ self.send(colname + '=',
+ self.class.recursive_stringify(attributes[colname]))
+ end
+ end
+ end
+
def foreign_key_attributes
attributes.keys.select { |a| a.match /_uuid$/ }
end
end
end
- @@UUID_REGEX = /^[0-9a-z]{5}-([0-9a-z]{5})-[0-9a-z]{15}$/
-
@@prefixes_hash = nil
def self.uuid_prefixes
unless @@prefixes_hash
@@prefixes_hash = {}
+ Rails.application.eager_load!
ActiveRecord::Base.descendants.reject(&:abstract_class?).each do |k|
if k.respond_to?(:uuid_prefix)
@@prefixes_hash[k.uuid_prefix] = k
"_____-#{uuid_prefix}-_______________"
end
+ def self.uuid_regex
+ %r/[a-z0-9]{5}-#{uuid_prefix}-[a-z0-9]{15}/
+ end
+
def ensure_valid_uuids
- specials = [system_user_uuid, 'd41d8cd98f00b204e9800998ecf8427e+0']
+ specials = [system_user_uuid]
foreign_key_attributes.each do |attr|
if new_record? or send (attr + "_changed?")
unless uuid.is_a? String
return nil
end
- if uuid.match /^[0-9a-f]{32}(\+[^,]+)*(,[0-9a-f]{32}(\+[^,]+)*)*$/
- return Collection
- end
resource_class = nil
- Rails.application.eager_load!
- uuid.match @@UUID_REGEX do |re|
+ uuid.match HasUuid::UUID_REGEX do |re|
return uuid_prefixes[re[1]] if uuid_prefixes[re[1]]
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
+ @old_attributes = Marshal.load(Marshal.dump(attributes))
+ @old_logged_attributes = Marshal.load(Marshal.dump(logged_attributes))
end
def log_change(event_type)
log = Log.new(event_type: event_type).fill_object(self)
yield log
log.save!
- connection.execute "NOTIFY logs, '#{log.id}'"
log_start_state
end
def log_update
log_change('update') do |log|
- log.fill_properties('old', @old_etag, @old_attributes)
+ log.fill_properties('old', etag(@old_attributes), @old_logged_attributes)
log.update_to self
end
end
def log_destroy
log_change('destroy') do |log|
- log.fill_properties('old', @old_etag, @old_attributes)
+ log.fill_properties('old', etag(@old_attributes), @old_logged_attributes)
log.update_to nil
end
end
projects / arvados.git / blobdiff