// This sample ServiceCallback just calls mDNS_RenameAndReregisterService to automatically pick a new
// unique name for the service. For a device such as a printer, this may be appropriate.
// For a device with a user interface, and a screen, and a keyboard, the appropriate
// response may be to prompt the user and ask them to choose a new name for the service.
mDNSlocal void ServiceCallback(mDNS *const m, ServiceRecordSet *const sr, mStatus result)
{
switch (result)
{
case mStatus_NoError: debugf("Callback: %##s Name Registered", sr->RR_SRV.resrec.name->c); break;
case mStatus_NameConflict: debugf("Callback: %##s Name Conflict", sr->RR_SRV.resrec.name->c); break;
case mStatus_MemFree: debugf("Callback: %##s Memory Free", sr->RR_SRV.resrec.name->c); break;
default: debugf("Callback: %##s Unknown Result %ld", sr->RR_SRV.resrec.name->c, result); break;
}
if (result == mStatus_NoError)
{
char buffer[MAX_ESCAPED_DOMAIN_NAME];
ConvertDomainNameToCString(sr->RR_SRV.resrec.name, buffer);
printf("Service %s now registered and active\n", buffer);
}
if (result == mStatus_NameConflict)
{
char buffer1[MAX_ESCAPED_DOMAIN_NAME], buffer2[MAX_ESCAPED_DOMAIN_NAME];
ConvertDomainNameToCString(sr->RR_SRV.resrec.name, buffer1);
mDNS_RenameAndReregisterService(m, sr, mDNSNULL);
ConvertDomainNameToCString(sr->RR_SRV.resrec.name, buffer2);
printf("Name Conflict! %s renamed as %s\n", buffer1, buffer2);
}
}
static void RegistrationCallback(mDNS *const m, ServiceRecordSet *const thisRegistration, mStatus status)
// mDNS core calls this routine to tell us about the status of
// our registration. The appropriate action to take depends
// entirely on the value of status.
{
switch (status) {
case mStatus_NoError:
DPRINTF(E_DBG,L_REND,"Callback: %##s Name Registered\n", thisRegistration->RR_SRV.resrec.name->c);
// Do nothing; our name was successfully registered. We may
// get more call backs in the future.
break;
case mStatus_NameConflict:
DPRINTF(E_DBG,L_REND,"Callback: %##s Name Conflict\n", thisRegistration->RR_SRV.resrec.name->c);
// In the event of a conflict, this sample RegistrationCallback
// just calls mDNS_RenameAndReregisterService to automatically
// pick a new unique name for the service. For a device such as a
// printer, this may be appropriate. For a device with a user
// interface, and a screen, and a keyboard, the appropriate response
// may be to prompt the user and ask them to choose a new name for
// the service.
//
// Also, what do we do if mDNS_RenameAndReregisterService returns an
// error. Right now I have no place to send that error to.
status = mDNS_RenameAndReregisterService(m, thisRegistration, mDNSNULL);
assert(status == mStatus_NoError);
break;
case mStatus_MemFree:
DPRINTF(E_DBG,L_REND,"Callback: %##s Memory Free\n", thisRegistration->RR_SRV.resrec.name->c);
// When debugging is enabled, make sure that thisRegistration
// is not on our gServiceList.
#if !defined(NDEBUG)
{
PosixService *cursor;
cursor = gServiceList;
while (cursor != NULL) {
assert(&cursor->coreServ != thisRegistration);
cursor = cursor->next;
}
}
#endif
free(thisRegistration);
break;
default:
DPRINTF(E_DBG,L_REND,"Callback: %##s Unknown Status %ld\n", thisRegistration->RR_SRV.resrec.name->c, status);
break;
}
}
mDNSlocal void RegCallback(mDNS *const m, ServiceRecordSet *const sr, mStatus result)
{
mDNS_DirectOP_Register *x = (mDNS_DirectOP_Register*)sr->ServiceContext;
domainlabel name;
domainname type, dom;
char namestr[MAX_DOMAIN_LABEL+1]; // Unescaped name: up to 63 bytes plus C-string terminating NULL.
char typestr[MAX_ESCAPED_DOMAIN_NAME];
char domstr [MAX_ESCAPED_DOMAIN_NAME];
if (!DeconstructServiceName(sr->RR_SRV.resrec.name, &name, &type, &dom)) return;
if (!ConvertDomainLabelToCString_unescaped(&name, namestr)) return;
if (!ConvertDomainNameToCString(&type, typestr)) return;
if (!ConvertDomainNameToCString(&dom, domstr)) return;
if (result == mStatus_NoError)
{
if (x->callback)
x->callback((DNSServiceRef)x, 0, result, namestr, typestr, domstr, x->context);
}
else if (result == mStatus_NameConflict)
{
if (x->autoname) mDNS_RenameAndReregisterService(m, sr, mDNSNULL);
else if (x->autorename) {
IncrementLabelSuffix(&x->name, mDNStrue);
mDNS_RenameAndReregisterService(m, &x->s, &x->name);
}
else if (x->callback)
x->callback((DNSServiceRef)x, 0, result, namestr, typestr, domstr, x->context);
}
else if (result == mStatus_MemFree)
{
if (x->autorename)
{
x->autorename = mDNSfalse;
x->name = mDNSStorage.nicelabel;
mDNS_RenameAndReregisterService(m, &x->s, &x->name);
}
else
FreeDNSServiceRegistration(x);
}
}
// This sample code just calls mDNS_RenameAndReregisterService to automatically pick a new
// unique name for the service. For a device such as a printer, this may be appropriate.
// For a device with a user interface, and a screen, and a keyboard, the appropriate
// response may be to prompt the user and ask them to choose a new name for the service.
mDNSlocal void Callback(mDNS *const m, ServiceRecordSet *const sr, mStatus result)
{
switch (result)
{
case mStatus_NoError: debugf("Callback: %##s Name Registered", sr->RR_SRV.resrec.name->c); break;
case mStatus_NameConflict: debugf("Callback: %##s Name Conflict", sr->RR_SRV.resrec.name->c); break;
case mStatus_MemFree: debugf("Callback: %##s Memory Free", sr->RR_SRV.resrec.name->c); break;
default: debugf("Callback: %##s Unknown Result %d", sr->RR_SRV.resrec.name->c, result); break;
}
if (result == mStatus_NameConflict) mDNS_RenameAndReregisterService(m, sr, mDNSNULL);
}
static void
foobar_callback(mDNS *m, ServiceRecordSet *srs, mStatus status)
{
const mDNSu8 *name = srs->RR_SRV.resrec.name->c;
switch (status) {
case mStatus_NoError:
printf("foobar server: name registered: %s\n", name);
break;
case mStatus_NameConflict:
printf("foobar server: name conflict: %s\n", name);
status = mDNS_RenameAndReregisterService(m, srs, mDNSNULL);
assert(status == mStatus_NoError);
break;
case mStatus_MemFree:
printf("foobar server: free: %s\n", name);
free(srs);
break;
default:
printf("foobar server: unexpected status: %s\n", name);
break;
}
}
