re-added "winbind:ignore domains" patch

This option really is essential, as we discover again and again at
customer sites. Due to bugs in winbind some domains are toxic. When
you are installing at a site and a particular domain in a complex
setup causes winbind to segfault or hang then you need a way to
disable that domain and continue.

In an ideal world winbind could handle arbitrarily complex ADS
domains, but we are nowhere near that yet. If we ever get to that
stage then we won't need this option.

1 files changed, 17 insertions, 0 deletions

diff --git a/source3/winbindd/winbindd_util.c b/source3/winbindd/winbindd_util.c
index 5b5ca41a74..b8cb27c797 100644
--- a/source3/winbindd/winbindd_util.c
+++ b/source3/winbindd/winbindd_util.c
@@ -111,7 +111,16 @@ static struct winbindd_domain *add_trusted_domain(const char *domain_name, const
 	const char *alternative_name = NULL;
 	char *idmap_config_option;
 	const char *param;
+	const char **ignored_domains, **dom;
 	
+	ignored_domains = lp_parm_string_list(-1, "winbind", "ignore domains", NULL);
+	for (dom=ignored_domains; dom && *dom; dom++) {
+		if (gen_fnmatch(*dom, domain_name) == 0) {
+			DEBUG(2,("Ignoring domain '%s'\n", domain_name));
+			return NULL;
+		}
+	}
+
 	/* ignore alt_name if we are not in an AD domain */
 	
 	if ( (lp_security() == SEC_ADS) && alt_name && *alt_name) {
@@ -436,6 +445,10 @@ static void rescan_forest_root_trusts( void )
 						&dom_list[i].sid );
 		}
 
+		if (d == NULL) {
+			continue;
+		}
+
        		DEBUG(10,("rescan_forest_root_trusts: Following trust path "
 			  "for domain tree root %s (%s)\n",
 	       		  d->name, d->alt_name ));
@@ -500,6 +513,10 @@ static void rescan_forest_trusts( void )
 							&cache_methods,
 							&dom_list[i].sid );
 			}
+
+			if (d == NULL) {
+				continue;
+			}
 			
 			DEBUG(10,("Following trust path for domain %s (%s)\n",
 				  d->name, d->alt_name ));