647 lines
20 KiB
Ruby
647 lines
20 KiB
Ruby
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require_relative './permission/presenter'
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require_relative './visualization/member'
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require_relative 'shared_entity'
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module CartoDB
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class Permission < Sequel::Model
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# @param id String (uuid)
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# @param owner_id String (uuid)
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# @param owner_username String
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# @param entity_id String (uuid)
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# @param entity_type String
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# Another hack to resolve the problem with Sequel new? method
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@new_object = false
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@old_acl = nil
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ACCESS_READONLY = 'r'.freeze
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ACCESS_READWRITE = 'rw'.freeze
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ACCESS_NONE = 'n'.freeze
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SORTED_ACCESSES = [ACCESS_READWRITE, ACCESS_READONLY, ACCESS_NONE].freeze
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TYPE_USER = 'user'
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TYPE_ORGANIZATION = 'org'
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TYPE_GROUP = 'group'
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ENTITY_TYPE_VISUALIZATION = 'vis'
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DEFAULT_ACL_VALUE = '[]'
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# Format: requested_permission => [ allowed_permissions_list ]
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PERMISSIONS_MATRIX = {
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ACCESS_READONLY => [ ACCESS_READONLY, ACCESS_READWRITE ],
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ACCESS_READWRITE => [ ACCESS_READWRITE ],
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ACCESS_NONE => []
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}
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ALLOWED_ENTITY_KEYS = [:id, :username, :name, :avatar_url]
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# @return Hash
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def acl
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::JSON.parse((self.access_control_list.nil? ? DEFAULT_ACL_VALUE : self.access_control_list), symbolize_names: true)
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end
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def real_entity_type
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entity.type
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end
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def notify_permissions_change(permissions_changes)
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begin
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permissions_changes.each do |c, v|
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# At the moment we just check users permissions
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if c == 'user'
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v.each do |affected_id, perm|
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# Perm is an array. For the moment just one type of permission can
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# be applied to a type of object. But with an array this is open
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# to more than one permission change at a time
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perm.each do |p|
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if Carto::Visualization::MAP_TYPES.include?(real_entity_type) || self.real_entity_type == Carto::Visualization::TYPE_APP
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if p['action'] == 'grant'
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# At this moment just inform as read grant
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if p['type'].include?('r')
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::Resque.enqueue(::Resque::UserJobs::Mail::ShareVisualization, self.entity.id, affected_id)
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end
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elsif p['action'] == 'revoke'
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if p['type'].include?('r')
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::Resque.enqueue(::Resque::UserJobs::Mail::UnshareVisualization, self.entity.name, self.owner_username, affected_id)
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end
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end
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elsif self.real_entity_type == CartoDB::Visualization::Member::TYPE_CANONICAL
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if p['action'] == 'grant'
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# At this moment just inform as read grant
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if p['type'].include?('r')
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::Resque.enqueue(::Resque::UserJobs::Mail::ShareTable, self.entity.id, affected_id)
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end
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elsif p['action'] == 'revoke'
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if p['type'].include?('r')
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::Resque.enqueue(::Resque::UserJobs::Mail::UnshareTable, self.entity.name, self.owner_username, affected_id)
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end
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end
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end
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end
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end
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end
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end
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rescue StandardError => e
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log_error(message: "Problem sending notification mail", exception: e)
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end
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end
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def self.compare_new_acl(old_acl, new_acl)
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temp_old_acl = {}
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# Convert the old and new acls to a better format for searching
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old_acl.each do |i|
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if !temp_old_acl.has_key?(i[:type])
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temp_old_acl[i[:type]] = {}
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end
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temp_old_acl[i[:type]][i[:id]] = i
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end
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temp_new_acl = {}
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new_acl.each do |i|
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if !temp_new_acl.has_key?(i[:type])
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temp_new_acl[i[:type]] = {}
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end
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temp_new_acl[i[:type]][i[:id]] = i
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end
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# Iterate through the new acl and compare elements with the old one
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permissions_change = {}
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temp_new_acl.each do |pt, pv|
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permissions_change[pt] = {}
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pv.each do |oi, iacl|
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# See if a specific permission exists in the old acl
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# If the new acl is greater than the old we suppose that write
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# permissions were granted. Otherwise they were revoked
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# If the permissions doesn't exist in the old acl it has been granted
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# After the comparisson both old and new acl are removed from the
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# temporal structure
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if !temp_old_acl[pt].nil? && !temp_old_acl[pt][oi].nil?
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case temp_new_acl[pt][oi][:access] <=> temp_old_acl[pt][oi][:access]
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when 1
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permissions_change[pt][oi] = [{'action' => 'grant', 'type' => 'w'}]
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when -1
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permissions_change[pt][oi] = [{'action' => 'revoke', 'type' => 'w'}]
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end
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temp_old_acl[pt].delete(oi)
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else
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permissions_change[pt][oi] = [{'action' => 'grant', 'type' => temp_new_acl[pt][oi][:access]}]
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end
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temp_new_acl[pt].delete(oi)
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end
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end
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# Iterate through the old acl. All the permissions in this structure are
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# supposed so be revokes
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temp_old_acl.each do |pt, pv|
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if permissions_change[pt].nil?
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permissions_change[pt] = {}
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end
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pv.each do |oi, iacl|
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permissions_change[pt][oi] = [{'action' => 'revoke', 'type' => temp_old_acl[pt][oi][:access]}]
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end
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end
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return permissions_change
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end
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# Format:
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# [
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# {
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# type: string,
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# entity:
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# {
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# id: uuid,
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# username: string,
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# avatar_url: string, (optional)
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# },
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# access: string
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# }
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# ]
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#
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# type is from TYPE_xxxxx constants
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# access is from ACCESS_xxxxx constants
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#
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# @param value Array
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# @throws PermissionError
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def acl=(value)
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incoming_acl = value.nil? ? ::JSON.parse(DEFAULT_ACL_VALUE) : value
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raise PermissionError.new('ACL is not an array') unless incoming_acl.kind_of? Array
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incoming_acl.map { |item|
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unless item.kind_of?(Hash) && acl_has_required_fields?(item) && acl_has_valid_access?(item)
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raise PermissionError.new('Wrong ACL entry format')
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end
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}
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acl_items = incoming_acl.map do |item|
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{
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type: item[:type],
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id: item[:entity][:id],
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access: item[:access]
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}
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end
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cleaned_acl = acl_items.select { |i| i[:id] } # Cleaning, see #5668
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if @old_acl.nil?
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@old_acl = acl
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end
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self.access_control_list = ::JSON.dump(cleaned_acl)
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end
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def set_group_permission(group, access)
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# You only want to switch it off when request is a permission request coming from database
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@update_db_group_permission = false
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granted_access = granted_access_for_group(group)
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if granted_access == access
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raise ModelAlreadyExistsError.new("Group #{group.name} already has #{access} access")
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elsif granted_access == ACCESS_NONE
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set_subject_permission(group.id, access, TYPE_GROUP)
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else
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# Remove group entry from acl in order to add new (or none if ACCESS_NONE)
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new_acl = self.inputable_acl.select { |entry| entry[:entity][:id] != group.id }
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unless access == ACCESS_NONE
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acl_entry = {
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type: TYPE_GROUP,
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entity: {
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id: group.id,
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name: group.name
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},
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access: access
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}
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new_acl << acl_entry
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end
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self.acl = new_acl
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end
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end
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def remove_group_permission(group)
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# You only want to switch it off when request is a permission request coming from database
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@update_db_group_permission = false
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set_group_permission(group, ACCESS_NONE)
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end
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def remove_user_permission(user)
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granted_access = granted_access_for_user(user)
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if granted_access != ACCESS_NONE
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self.acl = inputable_acl.select { |entry| entry[:entity][:id] != user.id }
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end
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end
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def set_user_permission(subject, access)
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set_subject_permission(subject.id, access, TYPE_USER)
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end
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# acl write method expects entries to have entity, although they're not
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# stored.
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# TODO: fix this, since this is coupled to representation.
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def inputable_acl
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self.acl.map { |entry|
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{
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type: entry[:type],
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entity: {
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id: entry[:id],
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avatar_url: '',
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username: '',
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name: ''
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},
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access: entry[:access]
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}
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}
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end
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def set_subject_permission(subject_id, access, type)
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new_acl = inputable_acl
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new_acl << {
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type: type,
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entity: {
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id: subject_id,
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avatar_url: '',
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username: '',
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name: ''
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},
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access: access
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}
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self.acl = new_acl
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end
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# @return ::User|nil
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def owner
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@owner ||= ::User[self.owner_id] # See http://sequel.jeremyevans.net/rdoc-plugins/classes/Sequel/Plugins/Caching.html
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end
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# @param value ::User
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def owner=(value)
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@owner = value
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self.owner_id = value.id
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self.owner_username = value.username
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end
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# @return Mixed|nil
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def entity
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@visualization ||= CartoDB::Visualization::Collection.new.fetch(permission_id: id).first
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end
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def validate
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super
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errors.add(:owner_id, 'cannot be nil') if owner_id.nil? || owner_id.empty?
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errors.add(:owner_username, 'cannot be nil') if owner_username.nil? || owner_username.empty?
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viewer_writers = users_with_permissions(ACCESS_READWRITE).select(&:viewer)
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unless viewer_writers.empty?
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errors.add(:access_control_list, "grants write to viewers: #{viewer_writers.map(&:username).join(',')}")
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end
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if new?
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errors.add(:acl, 'must be empty on initial creation') if acl.present?
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else
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validates_presence [:id]
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end
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end
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def before_save
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super
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self.updated_at = Time.now
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end
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def after_update
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if !@old_acl.nil?
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self.notify_permissions_change(CartoDB::Permission.compare_new_acl(@old_acl, self.acl))
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end
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update_shared_entities
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# Notify change, caches should be invalidated
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entity.table.update_cdb_tablemetadata if entity && entity.table
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end
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def after_destroy
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# Hack. I need to set the new acl as empty so all the old acls are
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# considered revokes
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# We need to pass the current acl as old_acl and the new_acl as something
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# empty to recreate a revoke by deletion
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self.notify_permissions_change(CartoDB::Permission.compare_new_acl(self.acl, []))
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end
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# @param subject ::User
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# @return String Permission::ACCESS_xxx
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def permission_for_user(subject)
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# Common scenario
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return ACCESS_READWRITE if is_owner?(subject)
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permission_entries = acl.select do |entry|
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(entry[:type] == TYPE_USER && entry[:id] == subject.id) ||
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(entry[:type] == TYPE_GROUP && !subject.groups.nil? && subject.groups.map(&:id).include?(entry[:id])) ||
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(entry[:type] == TYPE_ORGANIZATION && !subject.organization.nil? && subject.organization.id == entry[:id])
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end
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higher_access(permission_entries.map { |entry| entry[:access] })
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end
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def higher_access(accesses)
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return ACCESS_NONE if accesses.empty?
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index = SORTED_ACCESSES.index do |access|
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accesses.include?(access)
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end
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SORTED_ACCESSES[index]
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end
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def permission_for_org
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permission = nil
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acl.map { |entry|
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if entry[:type] == TYPE_ORGANIZATION
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permission = entry[:access]
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end
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}
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ACCESS_NONE if permission.nil?
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end
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def granted_access_for_user(user)
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granted_access_for_entry_type(TYPE_USER, user)
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end
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def granted_access_for_group(group)
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granted_access_for_entry_type(TYPE_GROUP, group)
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end
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# Note: Does not check ownership
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# @param subject ::User
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# @param access String Permission::ACCESS_xxx
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def permitted?(subject, access)
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permission = permission_for_user(subject)
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Permission::PERMISSIONS_MATRIX[access].include? permission
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end
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|
||
|
|
def is_owner?(subject)
|
||
|
|
self.owner_id == subject.id
|
||
|
|
end
|
||
|
|
|
||
|
|
def to_poro
|
||
|
|
CartoDB::PermissionPresenter.new(self).to_poro
|
||
|
|
end
|
||
|
|
|
||
|
|
def destroy_shared_entities
|
||
|
|
CartoDB::SharedEntity.where(entity_id: entity.id).delete
|
||
|
|
end
|
||
|
|
|
||
|
|
def clear
|
||
|
|
self.acl = []
|
||
|
|
revoke_previous_permissions(entity)
|
||
|
|
save
|
||
|
|
end
|
||
|
|
|
||
|
|
def update_shared_entities
|
||
|
|
e = entity
|
||
|
|
# First clean previous sharings
|
||
|
|
destroy_shared_entities
|
||
|
|
revoke_previous_permissions(e)
|
||
|
|
|
||
|
|
# Create user entities for the new ACL
|
||
|
|
users = relevant_user_acl_entries(acl)
|
||
|
|
# Avoid entries without recipient id. See #5668.
|
||
|
|
users.select { |u| u[:id] }.each do |user|
|
||
|
|
shared_entity = CartoDB::SharedEntity.new(
|
||
|
|
recipient_id: user[:id],
|
||
|
|
recipient_type: CartoDB::SharedEntity::RECIPIENT_TYPE_USER,
|
||
|
|
entity_id: entity.id,
|
||
|
|
entity_type: CartoDB::SharedEntity::ENTITY_TYPE_VISUALIZATION
|
||
|
|
).save
|
||
|
|
|
||
|
|
if e.table?
|
||
|
|
grant_db_permission(e, user[:access], shared_entity)
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
org = relevant_org_acl_entry(acl)
|
||
|
|
if org
|
||
|
|
shared_entity = CartoDB::SharedEntity.new(
|
||
|
|
recipient_id: org[:id],
|
||
|
|
recipient_type: CartoDB::SharedEntity::RECIPIENT_TYPE_ORGANIZATION,
|
||
|
|
entity_id: entity.id,
|
||
|
|
entity_type: CartoDB::SharedEntity::ENTITY_TYPE_VISUALIZATION
|
||
|
|
).save
|
||
|
|
|
||
|
|
if e.table?
|
||
|
|
grant_db_permission(e, org[:access], shared_entity)
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
groups = relevant_groups_acl_entries(acl)
|
||
|
|
groups.each do |group|
|
||
|
|
CartoDB::SharedEntity.new(
|
||
|
|
recipient_id: group[:id],
|
||
|
|
recipient_type: CartoDB::SharedEntity::RECIPIENT_TYPE_GROUP,
|
||
|
|
entity_id: entity.id,
|
||
|
|
entity_type: CartoDB::SharedEntity::ENTITY_TYPE_VISUALIZATION
|
||
|
|
).save
|
||
|
|
|
||
|
|
# You only want to switch it off when request is a permission request coming from database
|
||
|
|
if e.table? && @update_db_group_permission != false
|
||
|
|
Carto::Group.find(group[:id]).grant_db_permission(e.table, group[:access])
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
e.invalidate_for_permissions_change
|
||
|
|
end
|
||
|
|
|
||
|
|
def users_with_permissions(access)
|
||
|
|
user_ids = relevant_user_acl_entries(acl).select { |e| access == e[:access] }.map { |e| e[:id] }
|
||
|
|
::User.where(id: user_ids).all
|
||
|
|
end
|
||
|
|
|
||
|
|
def entity_type
|
||
|
|
ENTITY_TYPE_VISUALIZATION
|
||
|
|
end
|
||
|
|
|
||
|
|
def entity_id
|
||
|
|
entity.id
|
||
|
|
end
|
||
|
|
|
||
|
|
private
|
||
|
|
|
||
|
|
def granted_access_for_entry_type(type, entity)
|
||
|
|
permission = nil
|
||
|
|
|
||
|
|
acl.map do |entry|
|
||
|
|
if entry[:type] == type && entry[:id] == entity.id
|
||
|
|
permission = entry[:access]
|
||
|
|
end
|
||
|
|
end
|
||
|
|
permission = ACCESS_NONE if permission.nil?
|
||
|
|
permission
|
||
|
|
end
|
||
|
|
|
||
|
|
# when removing permission form a table related visualizations should
|
||
|
|
# be checked. The policy is the following:
|
||
|
|
# - if the table is used in one layer of the visualization, it's removed
|
||
|
|
# - if the table is used in the only one visualization layer, the vis is removed
|
||
|
|
# TODO: send a notification to the visualizations owner
|
||
|
|
def check_related_visualizations(table)
|
||
|
|
fully_dependent_visualizations = table.fully_dependent_visualizations.to_a
|
||
|
|
partially_dependent_visualizations = table.partially_dependent_visualizations.to_a
|
||
|
|
table_visualization = table.table_visualization
|
||
|
|
partially_dependent_visualizations.each do |visualization|
|
||
|
|
# check permissions, if the owner does not have permissions
|
||
|
|
# to see the table the layers using this table are removed
|
||
|
|
perm = visualization.permission
|
||
|
|
unless table_visualization.has_permission?(perm.owner, CartoDB::Visualization::Member::PERMISSION_READONLY)
|
||
|
|
visualization.unlink_from(table)
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
fully_dependent_visualizations.each do |visualization|
|
||
|
|
# check permissions, if the owner does not have permissions
|
||
|
|
# to see the table the visualization is removed
|
||
|
|
perm = visualization.permission
|
||
|
|
unless table_visualization.has_permission?(perm.owner, CartoDB::Visualization::Member::PERMISSION_READONLY)
|
||
|
|
visualization.delete
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
def revoke_previous_permissions(entity)
|
||
|
|
users = relevant_user_acl_entries(@old_acl.nil? ? [] : @old_acl)
|
||
|
|
org = relevant_org_acl_entry(@old_acl.nil? ? [] : @old_acl)
|
||
|
|
groups = relevant_groups_acl_entries(@old_acl.nil? ? [] : @old_acl)
|
||
|
|
case entity.class.name
|
||
|
|
when CartoDB::Visualization::Member.to_s
|
||
|
|
if entity.table
|
||
|
|
if org
|
||
|
|
entity.table.remove_organization_access
|
||
|
|
end
|
||
|
|
users.each { |user|
|
||
|
|
# Cleaning, see #5668
|
||
|
|
u = ::User[user[:id]]
|
||
|
|
entity.table.remove_access(u) if u
|
||
|
|
}
|
||
|
|
# update_db_group_permission check is needed to avoid updating db requests
|
||
|
|
if @update_db_group_permission != false
|
||
|
|
groups.each { |group|
|
||
|
|
Carto::Group.find(group[:id]).grant_db_permission(entity.table, ACCESS_NONE)
|
||
|
|
}
|
||
|
|
end
|
||
|
|
check_related_visualizations(entity.table)
|
||
|
|
end
|
||
|
|
else
|
||
|
|
raise PermissionError.new("Unsupported entity type trying to grant permission: #{entity.class.name}")
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
def grant_db_permission(entity, access, shared_entity)
|
||
|
|
if shared_entity.recipient_type == CartoDB::SharedEntity::RECIPIENT_TYPE_ORGANIZATION
|
||
|
|
permission_strategy = OrganizationPermission.new
|
||
|
|
else
|
||
|
|
u = ::User.where(id: shared_entity[:recipient_id]).first
|
||
|
|
permission_strategy = UserPermission.new(u)
|
||
|
|
end
|
||
|
|
|
||
|
|
case entity.class.name
|
||
|
|
when CartoDB::Visualization::Member.to_s
|
||
|
|
# assert database permissions for non canonical tables are assigned
|
||
|
|
# its canonical vis
|
||
|
|
if not entity.table
|
||
|
|
raise PermissionError.new('Trying to change permissions to a table without ownership')
|
||
|
|
end
|
||
|
|
table = entity.table
|
||
|
|
|
||
|
|
# check ownership
|
||
|
|
if not self.owner_id == entity.permission.owner_id
|
||
|
|
raise PermissionError.new('Trying to change permissions to a table without ownership')
|
||
|
|
end
|
||
|
|
# give permission
|
||
|
|
if access == ACCESS_READONLY
|
||
|
|
permission_strategy.add_read_permission(table)
|
||
|
|
elsif access == ACCESS_READWRITE
|
||
|
|
permission_strategy.add_read_write_permission(table)
|
||
|
|
end
|
||
|
|
else
|
||
|
|
raise PermissionError.new('Unsupported entity type trying to grant permission')
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
# Only user entries, and those with forbids also skipped
|
||
|
|
def relevant_user_acl_entries(acl_list)
|
||
|
|
relevant_acl_entries(acl_list, TYPE_USER)
|
||
|
|
end
|
||
|
|
|
||
|
|
def relevant_org_acl_entry(acl_list)
|
||
|
|
relevant_acl_entries(acl_list, TYPE_ORGANIZATION).first
|
||
|
|
end
|
||
|
|
|
||
|
|
def relevant_groups_acl_entries(acl_list)
|
||
|
|
relevant_acl_entries(acl_list, TYPE_GROUP)
|
||
|
|
end
|
||
|
|
|
||
|
|
def relevant_acl_entries(acl_list, type)
|
||
|
|
acl_list.select { |entry|
|
||
|
|
entry[:type] == type && entry[:access] != ACCESS_NONE
|
||
|
|
}.map { |entry|
|
||
|
|
{
|
||
|
|
id: entry[:id],
|
||
|
|
access: entry[:access]
|
||
|
|
}
|
||
|
|
}
|
||
|
|
end
|
||
|
|
|
||
|
|
def acl_has_required_fields?(acl_item)
|
||
|
|
acl_item[:entity].present? && acl_item[:type].present? && acl_item[:access].present? && acl_has_valid_entity_field?(acl_item)
|
||
|
|
end
|
||
|
|
|
||
|
|
def acl_has_valid_entity_field?(acl_item)
|
||
|
|
acl_item[:entity].keys - ALLOWED_ENTITY_KEYS == []
|
||
|
|
end
|
||
|
|
|
||
|
|
def acl_has_valid_access?(acl_item)
|
||
|
|
valid_access = [ACCESS_READONLY, ACCESS_NONE]
|
||
|
|
if entity.table?
|
||
|
|
valid_access << ACCESS_READWRITE
|
||
|
|
end
|
||
|
|
valid_access.include?(acl_item[:access])
|
||
|
|
end
|
||
|
|
|
||
|
|
end
|
||
|
|
|
||
|
|
class PermissionError < StandardError; end
|
||
|
|
|
||
|
|
|
||
|
|
class OrganizationPermission
|
||
|
|
def add_read_permission(table)
|
||
|
|
table.add_organization_read_permission
|
||
|
|
end
|
||
|
|
|
||
|
|
def add_read_write_permission(table)
|
||
|
|
table.add_organization_read_write_permission
|
||
|
|
end
|
||
|
|
|
||
|
|
def is_permitted(table, access)
|
||
|
|
table.permission.permission_for_org == access
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
|
||
|
|
class UserPermission
|
||
|
|
|
||
|
|
def initialize(user)
|
||
|
|
@user = user
|
||
|
|
end
|
||
|
|
|
||
|
|
def is_permitted(table, access)
|
||
|
|
table.permission.permitted?(@user, access)
|
||
|
|
end
|
||
|
|
|
||
|
|
def add_read_permission(table)
|
||
|
|
table.add_read_permission(@user)
|
||
|
|
end
|
||
|
|
|
||
|
|
def add_read_write_permission(table)
|
||
|
|
table.add_read_write_permission(@user)
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
end
|