Don't attempt to access the LDAP server if the realm DC is blank

If the realm DC is blank, it indicates that configuration has not reached
a point where connection to the LDAP server is possible.  Providing a blank
DC to LDAP will always result in an invalid DN error.

This resolves spurious popups when creating the first realm control server
in a given realm.

Signed-off-by: Timothy Pearson <kb9vqf@pearsoncomputing.net>

src/ldapcontroller.cpp

@@ -531,7 +531,10 @@ void LDAPController::updateCertDisplay() {
 	credentials->username = "";
 	credentials->password = "";
 	credentials->realm = realmname;
-	LDAPManager* ldap_mgr = new LDAPManager(realmname, "ldapi://", credentials);
+	LDAPManager* ldap_mgr = NULL;
+	if (realmname != "") {
+		ldap_mgr = new LDAPManager(realmname, "ldapi://", credentials);
+	}
 
 	// Certificate Authority
 	if (TQFile::exists(KERBEROS_PKI_PEM_FILE)) {
@@ -601,7 +604,7 @@ void LDAPController::updateCertDisplay() {
 
 	// Certificate Revocation List
 	TQByteArray certificateContents;
-	if (ldap_mgr->getTDECertificate("publicRootCertificateRevocationList", &certificateContents, NULL) == 0) {
+	if (ldap_mgr && ldap_mgr->getTDECertificate("publicRootCertificateRevocationList", &certificateContents, NULL) == 0) {
 		certExpiry = LDAPManager::getCertificateExpiration(certificateContents);
 		if (certExpiry >= now) {
 			m_base->crlExpiryString->setText("Expires " + certExpiry.toString());
@@ -622,7 +625,9 @@ void LDAPController::updateCertDisplay() {
 		m_base->crlExpiryString->setPaletteForegroundColor(CERT_STATUS_COLOR_NOTFOUND);
 	}
 
-	delete ldap_mgr;
+	if (ldap_mgr) {
+		delete ldap_mgr;
+	}
 }
 
 void LDAPController::btncaSetMaster() {
@@ -1055,9 +1060,13 @@ void LDAPController::save() {
 	credentials->username = "";
 	credentials->password = "";
 	credentials->realm = realmname;
-	LDAPManager* ldap_mgr = new LDAPManager(realmname, "ldapi://", credentials);
+	LDAPManager* ldap_mgr = NULL;
 
-	if (ldap_mgr->setLdapCertificateStoreAttribute("publicRootCRLIntervalDays", TQString("%1").arg(m_certconfig.caCrlExpiryDays), &errorstring) != 0) {
+	if (realmname != "") {
+		ldap_mgr = new LDAPManager(realmname, "ldapi://", credentials);
+	}
+
+	if (ldap_mgr && ldap_mgr->setLdapCertificateStoreAttribute("publicRootCRLIntervalDays", TQString("%1").arg(m_certconfig.caCrlExpiryDays), &errorstring) != 0) {
 		KMessageBox::error(this, i18n("<qt><b>Unable to update CRL interval entry in LDAP database</b><p>Details: %1</qt>").arg(errorstring), i18n("LDAP Update Failure"));
 	}
 
@@ -1087,13 +1096,15 @@ void LDAPController::save() {
 
 			replicationSettings.ignore_ssl_failure = m_base->ignoreReplicationSSLFailures->isChecked();
 
-			if (ldap_mgr->setLDAPMasterReplicationSettings(replicationSettings, NULL) != 0) {
+			if (ldap_mgr && ldap_mgr->setLDAPMasterReplicationSettings(replicationSettings, NULL) != 0) {
 				// ERROR
 			}
 		}
 	}
 
-	delete ldap_mgr;
+	if (ldap_mgr) {
+		delete ldap_mgr;
+	}
 
 	load();
 }