From 03bfce26c944e2bf4d3073d959ed1e26d8f390a1 Mon Sep 17 00:00:00 2001
From: Tomas Babej <tbabej@redhat.com>
Date: Tue, 26 Nov 2013 12:14:39 +0100
Subject: [PATCH 14/14] ipa-cldap: Cut NetBIOS name after 15 characters

The CLDAP DS plugin uses the uppercased first segment of the fully
qualified hostname as the NetBIOS name. We need to limit its size
to 15 characters.

https://fedorahosted.org/freeipa/ticket/4028
---
 daemons/ipa-slapi-plugins/ipa-cldap/ipa_cldap.h          | 1 +
 daemons/ipa-slapi-plugins/ipa-cldap/ipa_cldap_netlogon.c | 6 +++++-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/daemons/ipa-slapi-plugins/ipa-cldap/ipa_cldap.h b/daemons/ipa-slapi-plugins/ipa-cldap/ipa_cldap.h
index 7b0c2aad1991f5f5958db62844f5777f71534794..3f420ff2c5acc7bd75bff7f042f76b9c61144461 100644
--- a/daemons/ipa-slapi-plugins/ipa-cldap/ipa_cldap.h
+++ b/daemons/ipa-slapi-plugins/ipa-cldap/ipa_cldap.h
@@ -59,6 +59,7 @@
 #define IPA_PLUGIN_NAME IPA_CLDAP_PLUGIN_NAME
 #define CLDAP_PORT 389
 #define MAX_DG_SIZE 4096
+#define NETBIOS_NAME_MAX 15
 
 #ifndef MAXHOSTNAMELEN
 #define MAXHOSTNAMELEN 64
diff --git a/daemons/ipa-slapi-plugins/ipa-cldap/ipa_cldap_netlogon.c b/daemons/ipa-slapi-plugins/ipa-cldap/ipa_cldap_netlogon.c
index 7d29fe559be55607fcb6b83fa521372e5197b848..9ba05829418a0d1de46f2c7776cc15c54a9eab1c 100644
--- a/daemons/ipa-slapi-plugins/ipa-cldap/ipa_cldap_netlogon.c
+++ b/daemons/ipa-slapi-plugins/ipa-cldap/ipa_cldap_netlogon.c
@@ -161,8 +161,12 @@ static int ipa_cldap_encode_netlogon(char *fq_hostname, char *domain,
     nlr->dns_domain = domain;
     nlr->pdc_dns_name = fq_hostname;
     nlr->domain_name = name;
-    pdc_name = talloc_asprintf(nlr, "\\\\%s", fq_hostname);
+
+    /* copy the first 15 characters of the fully qualified hostname*/
+    pdc_name = talloc_asprintf(nlr, "\\\\%.*s", NETBIOS_NAME_MAX, fq_hostname);
+
     for (p = pdc_name; *p; p++) {
+        /* Create the NetBIOS name from the first segment of the hostname */
         if (*p == '.') {
             *p = '\0';
             break;
-- 
1.8.4.2