winbind: Fix some missing NULL checks

Reviewed-by: Stefan Metzmacher <metze@samba.org>
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Fri Jan 11 18:55:41 CET 2013 on sn-devel-104

diff --git a/source3/winbindd/winbindd_cache.c b/source3/winbindd/winbindd_cache.c
index fbfaa1dbafb5482d61afee4aa27a444dda5c09c4..252cf4a03c3f09392345e1a77f030142bbcc6e30 100644 (file)
--- a/source3/winbindd/winbindd_cache.c
+++ b/source3/winbindd/winbindd_cache.c
@@ -4605,6 +4605,33 @@ bool wcache_tdc_add_domain( struct winbindd_domain *domain )
        return ret;     
 }
 
+static struct winbindd_tdc_domain *wcache_tdc_dup_domain(
+       TALLOC_CTX *mem_ctx, const struct winbindd_tdc_domain *src)
+{
+       struct winbindd_tdc_domain *dst;
+
+       dst = talloc(mem_ctx, struct winbindd_tdc_domain);
+       if (dst == NULL) {
+               goto fail;
+       }
+       dst->domain_name = talloc_strdup(dst, src->domain_name);
+       if (dst->domain_name == NULL) {
+               goto fail;
+       }
+       dst->dns_name = talloc_strdup(dst, src->dns_name);
+       if (dst->dns_name == NULL) {
+               goto fail;
+       }
+       sid_copy(&dst->sid, &src->sid);
+       dst->trust_flags = src->trust_flags;
+       dst->trust_type = src->trust_type;
+       dst->trust_attribs = src->trust_attribs;
+       return dst;
+fail:
+       TALLOC_FREE(dst);
+       return NULL;
+}
+
 /*********************************************************************
  ********************************************************************/
 
@@ -4632,17 +4659,7 @@ struct winbindd_tdc_domain * wcache_tdc_fetch_domain( TALLOC_CTX *ctx, const cha
                        DEBUG(10,("wcache_tdc_fetch_domain: Found domain %s\n",
                                  name));
 
-                       d = talloc( ctx, struct winbindd_tdc_domain );
-                       if ( !d )
-                               break;                  
-
-                       d->domain_name = talloc_strdup( d, dom_list[i].domain_name );
-                       d->dns_name = talloc_strdup( d, dom_list[i].dns_name );
-                       sid_copy( &d->sid, &dom_list[i].sid );
-                       d->trust_flags   = dom_list[i].trust_flags;
-                       d->trust_type    = dom_list[i].trust_type;
-                       d->trust_attribs = dom_list[i].trust_attribs;
-
+                       d = wcache_tdc_dup_domain(ctx, &dom_list[i]);
                        break;
                }
        }
@@ -4682,19 +4699,7 @@ struct winbindd_tdc_domain*
                                   dom_list[i].domain_name,
                                   sid_string_dbg(sid)));
 
-                       d = talloc(ctx, struct winbindd_tdc_domain);
-                       if (!d)
-                               break;
-
-                       d->domain_name = talloc_strdup(d,
-                                                      dom_list[i].domain_name);
-
-                       d->dns_name = talloc_strdup(d, dom_list[i].dns_name);
-                       sid_copy(&d->sid, &dom_list[i].sid);
-                       d->trust_flags = dom_list[i].trust_flags;
-                       d->trust_type = dom_list[i].trust_type;
-                       d->trust_attribs = dom_list[i].trust_attribs;
-
+                       d = wcache_tdc_dup_domain(ctx, &dom_list[i]);
                        break;
                }
        }