github.com/bugraaydogar/snapd@v0.0.0-20210315170335-8c70bb858939/interfaces/builtin/dummy.go (about)

     1  // -*- Mode: Go; indent-tabs-mode: t -*-
     2  
     3  /*
     4   * Copyright (C) 2018 Canonical Ltd
     5   *
     6   * This program is free software: you can redistribute it and/or modify
     7   * it under the terms of the GNU General Public License version 3 as
     8   * published by the Free Software Foundation.
     9   *
    10   * This program is distributed in the hope that it will be useful,
    11   * but WITHOUT ANY WARRANTY; without even the implied warranty of
    12   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    13   * GNU General Public License for more details.
    14   *
    15   * You should have received a copy of the GNU General Public License
    16   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
    17   *
    18   */
    19  
    20  package builtin
    21  
    22  import (
    23  	"fmt"
    24  
    25  	"github.com/snapcore/snapd/interfaces"
    26  	"github.com/snapcore/snapd/interfaces/apparmor"
    27  	"github.com/snapcore/snapd/snap"
    28  )
    29  
    30  type dummyInterface struct{}
    31  
    32  const dummyInterfaceSummary = `allows testing without providing any additional permissions`
    33  const dummyInterfaceBaseDeclarationSlots = `
    34    dummy:
    35      allow-installation:
    36        slot-snap-type:
    37          - app
    38      deny-auto-connection: true
    39  `
    40  
    41  func (iface *dummyInterface) String() string {
    42  	return iface.Name()
    43  }
    44  
    45  // Name returns the name of the dummy interface.
    46  func (iface *dummyInterface) Name() string {
    47  	return "dummy"
    48  }
    49  
    50  func (iface *dummyInterface) StaticInfo() interfaces.StaticInfo {
    51  	return interfaces.StaticInfo{
    52  		Summary:              dummyInterfaceSummary,
    53  		BaseDeclarationSlots: dummyInterfaceBaseDeclarationSlots,
    54  	}
    55  }
    56  
    57  func (iface *dummyInterface) BeforePreparePlug(plug *snap.PlugInfo) error {
    58  	return nil
    59  }
    60  
    61  func (iface *dummyInterface) BeforePrepareSlot(slot *snap.SlotInfo) error {
    62  	return nil
    63  }
    64  
    65  func (iface *dummyInterface) BeforeConnectPlug(plug *interfaces.ConnectedPlug) error {
    66  	var value string
    67  	if err := plug.Attr("before-connect", &value); err != nil {
    68  		return err
    69  	}
    70  	value = fmt.Sprintf("plug-changed(%s)", value)
    71  	return plug.SetAttr("before-connect", value)
    72  }
    73  
    74  func (iface *dummyInterface) BeforeConnectSlot(slot *interfaces.ConnectedSlot) error {
    75  	var num int64
    76  	if err := slot.Attr("producer-num-1", &num); err != nil {
    77  		return err
    78  	}
    79  	var value string
    80  	if err := slot.Attr("before-connect", &value); err != nil {
    81  		return err
    82  	}
    83  	value = fmt.Sprintf("slot-changed(%s)", value)
    84  	return slot.SetAttr("before-connect", value)
    85  }
    86  
    87  func (iface *dummyInterface) AppArmorConnectedPlug(spec *apparmor.Specification, plug *interfaces.ConnectedPlug, slot *interfaces.ConnectedSlot) error {
    88  	return nil
    89  }
    90  
    91  func (iface *dummyInterface) AppArmorConnectedSlot(spec *apparmor.Specification, plug *interfaces.ConnectedPlug, slot *interfaces.ConnectedSlot) error {
    92  	return nil
    93  }
    94  
    95  func (iface *dummyInterface) AutoConnect(*snap.PlugInfo, *snap.SlotInfo) bool {
    96  	return true
    97  }
    98  
    99  func init() {
   100  	registerIface(&dummyInterface{})
   101  }