func (z *zeroconf) removePrinter(name string) error {
z.spMutex.Lock()
defer z.spMutex.Unlock()
r, exists := z.printers[name]
if !exists {
return fmt.Errorf("printer %s cannot be updated for Avahi publishing; it was never added", name)
}
if z.state == C.AVAHI_CLIENT_S_RUNNING && r.group != nil {
C.avahi_threaded_poll_lock(z.threadedPoll)
defer C.avahi_threaded_poll_unlock(z.threadedPoll)
var errstr *C.char
C.removeAvahiGroup(z.threadedPoll, r.group, &errstr)
if errstr != nil {
err := errors.New(C.GoString(errstr))
C.free(unsafe.Pointer(errstr))
return err
}
}
C.free(unsafe.Pointer(r.name))
delete(z.printers, name)
return nil
}
func (z *zeroconf) updatePrinterTXT(name, ty, url, id string, online bool) error {
z.spMutex.Lock()
defer z.spMutex.Unlock()
r, exists := z.printers[name]
if !exists {
return fmt.Errorf("printer %s cannot be updated for Avahi publishing; it was never added", name)
}
r.ty = ty
r.url = url
r.id = id
r.online = online
if z.state == C.AVAHI_CLIENT_S_RUNNING && r.group != nil {
txt := prepareTXT(ty, url, id, online)
defer C.avahi_string_list_free(txt)
C.avahi_threaded_poll_lock(z.threadedPoll)
defer C.avahi_threaded_poll_unlock(z.threadedPoll)
if errstr := C.updateAvahiGroup(z.threadedPoll, r.group, r.name, txt); errstr != nil {
err := fmt.Errorf("Failed to update Avahi group: %s", C.GoString(errstr))
return err
}
}
z.printers[name] = r
return nil
}
func (z *zeroconf) addPrinter(name string, port uint16, ty, url, id string, online bool) error {
r := record{
name: C.CString(name),
port: port,
ty: ty,
url: url,
id: id,
online: online,
}
z.spMutex.Lock()
defer z.spMutex.Unlock()
if _, exists := z.printers[name]; exists {
return fmt.Errorf("printer %s was already added to Avahi publishing", name)
}
if z.state == C.AVAHI_CLIENT_S_RUNNING {
txt := prepareTXT(ty, url, id, online)
defer C.avahi_string_list_free(txt)
C.avahi_threaded_poll_lock(z.threadedPoll)
defer C.avahi_threaded_poll_unlock(z.threadedPoll)
if errstr := C.addAvahiGroup(z.threadedPoll, z.client, &r.group, r.name, C.ushort(r.port), txt); errstr != nil {
err := fmt.Errorf("Failed to add Avahi group: %s", C.GoString(errstr))
return err
}
}
z.printers[name] = r
return nil
}
func (z *zeroconf) addPrinter(name string, port uint16, ty, url, id string, online bool) error {
r := record{
name: C.CString(name),
port: port,
ty: ty,
url: url,
id: id,
online: online,
}
z.spMutex.Lock()
defer z.spMutex.Unlock()
if _, exists := z.printers[name]; exists {
return fmt.Errorf("printer %s was already added to Avahi publishing", name)
}
if z.state == C.AVAHI_CLIENT_S_RUNNING {
tyC := C.CString(ty)
defer C.free(unsafe.Pointer(tyC))
urlC := C.CString(url)
defer C.free(unsafe.Pointer(urlC))
idC := C.CString(id)
defer C.free(unsafe.Pointer(idC))
var onlineC *C.char
if online {
onlineC = C.CString("online")
} else {
onlineC = C.CString("offline")
}
defer C.free(unsafe.Pointer(onlineC))
C.avahi_threaded_poll_lock(z.threadedPoll)
defer C.avahi_threaded_poll_unlock(z.threadedPoll)
var errstr *C.char
C.addAvahiGroup(z.threadedPoll, z.client, &r.group, r.name, C.ushort(port),
tyC, urlC, idC, onlineC, &errstr)
if errstr != nil {
err := errors.New(C.GoString(errstr))
C.free(unsafe.Pointer(errstr))
return err
}
}
z.printers[name] = r
return nil
}
func (z *zeroconf) updatePrinterTXT(name, ty, url, id string, online bool) error {
z.spMutex.Lock()
defer z.spMutex.Unlock()
r, exists := z.printers[name]
if !exists {
return fmt.Errorf("printer %s cannot be updated for Avahi publishing; it was never added", name)
}
r.ty = ty
r.url = url
r.id = id
r.online = online
if z.state == C.AVAHI_CLIENT_S_RUNNING && r.group != nil {
tyC := C.CString(ty)
defer C.free(unsafe.Pointer(tyC))
urlC := C.CString(url)
defer C.free(unsafe.Pointer(urlC))
idC := C.CString(id)
defer C.free(unsafe.Pointer(idC))
var onlineC *C.char
if online {
onlineC = C.CString("online")
} else {
onlineC = C.CString("offline")
}
defer C.free(unsafe.Pointer(onlineC))
C.avahi_threaded_poll_lock(z.threadedPoll)
defer C.avahi_threaded_poll_unlock(z.threadedPoll)
var errstr *C.char
C.updateAvahiGroup(z.threadedPoll, r.group, r.name, tyC, urlC, idC, onlineC, &errstr)
if errstr != nil {
err := errors.New(C.GoString(errstr))
C.free(unsafe.Pointer(errstr))
return err
}
}
z.printers[name] = r
return nil
}