func (m *InterfaceManager) doDisconnect(task *state.Task, _ *tomb.Tomb) error {
st := task.State()
st.Lock()
defer st.Unlock()
plugRef, slotRef, err := getPlugAndSlotRefs(task)
if err != nil {
return err
}
conns, err := getConns(st)
if err != nil {
return err
}
var affectedConns []interfaces.ConnRef
if plugRef.Snap != "" && plugRef.Name != "" && slotRef.Snap != "" && slotRef.Name != "" {
if err := m.repo.Disconnect(plugRef.Snap, plugRef.Name, slotRef.Snap, slotRef.Name); err != nil {
return err
}
affectedConns = []interfaces.ConnRef{{plugRef, slotRef}}
} else if plugRef.Name != "" && slotRef.Snap == "" && slotRef.Name == "" {
// NOTE: plugRef.Snap can be either empty or not, Connected handles both
affectedConns, err = m.repo.Connected(plugRef.Snap, plugRef.Name)
if err != nil {
return err
}
m.repo.DisconnectAll(affectedConns)
} else if plugRef.Snap == "" && plugRef.Name == "" && slotRef.Name != "" {
// Symmetrically, slotRef.Snap can be either empty or not
affectedConns, err = m.repo.Connected(slotRef.Snap, slotRef.Name)
if err != nil {
return err
}
m.repo.DisconnectAll(affectedConns)
} else {
return fmt.Errorf("internal error, unhandled disconnect case plug: %q, slot: %q", plugRef, slotRef)
}
affectedSnaps := snapNamesFromConns(affectedConns)
for _, snapName := range affectedSnaps {
var snapst snapstate.SnapState
if err := snapstate.Get(st, snapName, &snapst); err != nil {
return err
}
snapInfo, err := snapst.CurrentInfo()
if err != nil {
return err
}
if err := setupSnapSecurity(task, snapInfo, snapst.DevModeAllowed(), m.repo); err != nil {
return &state.Retry{}
}
}
for _, conn := range affectedConns {
delete(conns, conn.ID())
}
setConns(st, conns)
return nil
}
func (m *InterfaceManager) doConnect(task *state.Task, _ *tomb.Tomb) error {
st := task.State()
st.Lock()
defer st.Unlock()
plugRef, slotRef, err := getPlugAndSlotRefs(task)
if err != nil {
return err
}
conns, err := getConns(st)
if err != nil {
return err
}
err = m.repo.Connect(plugRef.Snap, plugRef.Name, slotRef.Snap, slotRef.Name)
if err != nil {
return err
}
plug := m.repo.Plug(plugRef.Snap, plugRef.Name)
var plugSnapst snapstate.SnapState
if err := snapstate.Get(st, plugRef.Snap, &plugSnapst); err != nil {
return err
}
slot := m.repo.Slot(slotRef.Snap, slotRef.Name)
var slotSnapst snapstate.SnapState
if err := snapstate.Get(st, slotRef.Snap, &slotSnapst); err != nil {
return err
}
if err := setupSnapSecurity(task, plug.Snap, plugSnapst.DevModeAllowed(), m.repo); err != nil {
return err
}
if err := setupSnapSecurity(task, slot.Snap, slotSnapst.DevModeAllowed(), m.repo); err != nil {
return err
}
conns[connID(plugRef, slotRef)] = connState{Interface: plug.Interface}
setConns(st, conns)
return nil
}
func (m *InterfaceManager) setupAffectedSnaps(task *state.Task, affectingSnap string, affectedSnaps []string) error {
st := task.State()
// Setup security of the affected snaps.
for _, affectedSnapName := range affectedSnaps {
// the snap that triggered the change needs to be skipped
if affectedSnapName == affectingSnap {
continue
}
var snapst snapstate.SnapState
if err := snapstate.Get(st, affectedSnapName, &snapst); err != nil {
return err
}
affectedSnapInfo, err := snapst.CurrentInfo()
if err != nil {
return err
}
snap.AddImplicitSlots(affectedSnapInfo)
if err := setupSnapSecurity(task, affectedSnapInfo, snapst.DevModeAllowed(), m.repo); err != nil {
return err
}
}
return nil
}
func (m *InterfaceManager) doConnect(task *state.Task, _ *tomb.Tomb) error {
st := task.State()
st.Lock()
defer st.Unlock()
plugRef, slotRef, err := getPlugAndSlotRefs(task)
if err != nil {
return err
}
conns, err := getConns(st)
if err != nil {
return err
}
connRef, err := m.repo.ResolveConnect(plugRef.Snap, plugRef.Name, slotRef.Snap, slotRef.Name)
if err != nil {
return err
}
plug := m.repo.Plug(connRef.PlugRef.Snap, connRef.PlugRef.Name)
if plug == nil {
return fmt.Errorf("snap %q has no %q plug", connRef.PlugRef.Snap, connRef.PlugRef.Name)
}
var plugDecl *asserts.SnapDeclaration
if plug.Snap.SnapID != "" {
var err error
plugDecl, err = assertstate.SnapDeclaration(st, plug.Snap.SnapID)
if err != nil {
return fmt.Errorf("cannot find snap declaration for %q: %v", plug.Snap.Name(), err)
}
}
slot := m.repo.Slot(connRef.SlotRef.Snap, connRef.SlotRef.Name)
if slot == nil {
return fmt.Errorf("snap %q has no %q slot", connRef.SlotRef.Snap, connRef.SlotRef.Name)
}
var slotDecl *asserts.SnapDeclaration
if slot.Snap.SnapID != "" {
var err error
slotDecl, err = assertstate.SnapDeclaration(st, slot.Snap.SnapID)
if err != nil {
return fmt.Errorf("cannot find snap declaration for %q: %v", slot.Snap.Name(), err)
}
}
baseDecl, err := assertstate.BaseDeclaration(st)
if err != nil {
return fmt.Errorf("internal error: cannot find base declaration: %v", err)
}
// check the connection against the declarations' rules
ic := policy.ConnectCandidate{
Plug: plug.PlugInfo,
PlugSnapDeclaration: plugDecl,
Slot: slot.SlotInfo,
SlotSnapDeclaration: slotDecl,
BaseDeclaration: baseDecl,
}
err = ic.Check()
if err != nil {
return err
}
err = m.repo.Connect(connRef)
if err != nil {
return err
}
var plugSnapst snapstate.SnapState
if err := snapstate.Get(st, connRef.PlugRef.Snap, &plugSnapst); err != nil {
return err
}
var slotSnapst snapstate.SnapState
if err := snapstate.Get(st, connRef.SlotRef.Snap, &slotSnapst); err != nil {
return err
}
if err := setupSnapSecurity(task, slot.Snap, slotSnapst.DevModeAllowed(), m.repo); err != nil {
return err
}
if err := setupSnapSecurity(task, plug.Snap, plugSnapst.DevModeAllowed(), m.repo); err != nil {
return err
}
conns[connRef.ID()] = connState{Interface: plug.Interface}
setConns(st, conns)
return nil
}
