1 # Copyright (C) The Arvados Authors. All rights reserved.
3 # SPDX-License-Identifier: AGPL-3.0
5 class Arvados::V1::LinksController < ApplicationController
7 def check_uuid_kind uuid, kind
8 if kind and ArvadosModel::resource_class_for_uuid(uuid).andand.kind != kind
9 send_error("'#{kind}' does not match uuid '#{uuid}', expected '#{ArvadosModel::resource_class_for_uuid(uuid).andand.kind}'",
18 return if ! check_uuid_kind resource_attrs[:head_uuid], resource_attrs[:head_kind]
19 return if ! check_uuid_kind resource_attrs[:tail_uuid], resource_attrs[:tail_kind]
21 resource_attrs.delete :head_kind
22 resource_attrs.delete :tail_kind
27 if current_user.andand.can?(manage: @object)
28 # find all links and return them
29 @objects = Link.where(link_class: "permission",
30 head_uuid: params[:uuid])
32 @limit = @objects.count
35 render :json => { errors: ['Forbidden'] }.to_json, status: 403
41 def find_object_by_uuid
42 if action_name == 'get_permissions'
43 # get_permissions accepts a UUID for any kind of object.
44 @object = ArvadosModel::resource_class_for_uuid(params[:uuid])
45 .readable_by(*@read_users)
46 .where(uuid: params[:uuid])
51 # Normally group permission links are not readable_by users.
52 # Make an exception for users with permission to manage the group.
53 # FIXME: Solve this more generally - see the controller tests.
54 link = Link.find_by_uuid(params[:uuid])
55 if (not link.nil?) and
56 (link.link_class == "permission") and
57 (@read_users.any? { |u| u.can?(manage: link.head_uuid) })
64 # Overrides ApplicationController load_where_param
68 # head_kind and tail_kind columns are now virtual,
69 # equivalent functionality is now provided by
70 # 'is_a', so fix up any old-style 'where' clauses.
74 @filters << ['head_uuid', 'is_a', @where[:head_kind]]
75 @where.delete :head_kind
78 @filters << ['tail_uuid', 'is_a', @where[:tail_kind]]
79 @where.delete :tail_kind
84 # Overrides ApplicationController load_filters_param
85 def load_filters_param
88 # head_kind and tail_kind columns are now virtual,
89 # equivalent functionality is now provided by
90 # 'is_a', so fix up any old-style 'filter' clauses.
91 @filters = @filters.map do |k|
92 if k[0] == 'head_kind' and k[1] == '='
93 ['head_uuid', 'is_a', k[2]]
94 elsif k[0] == 'tail_kind' and k[1] == '='
95 ['tail_uuid', 'is_a', k[2]]