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// -*- Mode: Go; indent-tabs-mode: t -*-
/*
* Copyright (C) 2018 Canonical Ltd
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
package builtin
import (
"fmt"
"github.com/snapcore/snapd/interfaces"
"github.com/snapcore/snapd/interfaces/apparmor"
"github.com/snapcore/snapd/snap"
)
type emptyInterface struct{}
const emptyInterfaceSummary = `allows testing without providing any additional permissions`
const emptyInterfaceBaseDeclarationSlots = `
empty:
allow-installation:
slot-snap-type:
- app
deny-auto-connection: true
`
func (iface *emptyInterface) String() string {
return iface.Name()
}
// Name returns the name of the empty interface.
func (iface *emptyInterface) Name() string {
return "empty"
}
func (iface *emptyInterface) StaticInfo() interfaces.StaticInfo {
return interfaces.StaticInfo{
Summary: emptyInterfaceSummary,
BaseDeclarationSlots: emptyInterfaceBaseDeclarationSlots,
}
}
func (iface *emptyInterface) BeforePreparePlug(plug *snap.PlugInfo) error {
return nil
}
func (iface *emptyInterface) BeforePrepareSlot(slot *snap.SlotInfo) error {
return nil
}
func (iface *emptyInterface) BeforeConnectPlug(plug *interfaces.ConnectedPlug) error {
var value string
if err := plug.Attr("before-connect", &value); err != nil {
return err
}
value = fmt.Sprintf("plug-changed(%s)", value)
return plug.SetAttr("before-connect", value)
}
func (iface *emptyInterface) BeforeConnectSlot(slot *interfaces.ConnectedSlot) error {
var num int64
if err := slot.Attr("producer-num-1", &num); err != nil {
return err
}
var value string
if err := slot.Attr("before-connect", &value); err != nil {
return err
}
value = fmt.Sprintf("slot-changed(%s)", value)
return slot.SetAttr("before-connect", value)
}
func (iface *emptyInterface) AppArmorConnectedPlug(spec *apparmor.Specification, plug *interfaces.ConnectedPlug, slot *interfaces.ConnectedSlot) error {
return nil
}
func (iface *emptyInterface) AppArmorConnectedSlot(spec *apparmor.Specification, plug *interfaces.ConnectedPlug, slot *interfaces.ConnectedSlot) error {
return nil
}
func (iface *emptyInterface) AutoConnect(*snap.PlugInfo, *snap.SlotInfo) bool {
return true
}
func init() {
registerIface(&emptyInterface{})
}
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