s3: Add wbinfo --dc-info

wbinfo --dc-info prints the current DC name and IP address. This helps
diagnosing problems that might happen when a later wbinfo --ping-dc fails.

This patch started out by using the SAF and NBT cache entires, but those are
relatively short-lived. So I decided to invent a new gencache entry with a very
long timeout. We need to go via the gencache because when for some reason a
winbind child process is stuck, we can't query it for the current DC it's
connected to. This must eventually go away again when we have a fully async
winbind.

Autobuild-User: Volker Lendecke <vlendec@samba.org>
Autobuild-Date: Wed Jan 19 08:40:28 CET 2011 on sn-devel-104

1 files changed, 14 insertions, 1 deletions

diff --git a/nsswitch/libwbclient/wbclient.h b/nsswitch/libwbclient/wbclient.h
index e2f989094a..39670ab6ed 100644
--- a/nsswitch/libwbclient/wbclient.h
+++ b/nsswitch/libwbclient/wbclient.h
@@ -192,7 +192,6 @@ struct wbcDomainInfo {
 #define WBC_DOMINFO_TRUSTTYPE_IN_FOREST  0x00000002
 #define WBC_DOMINFO_TRUSTTYPE_EXTERNAL   0x00000003
 
-
 /**
  * @brief Auth User Parameters
  **/
@@ -992,6 +991,20 @@ wbcErr wbcDomainInfo(const char *domain,
 		     struct wbcDomainInfo **dinfo);
 
 /**
+ * @brief Lookup the currently contacted DCs
+ *
+ * @param domain        The domain to query
+ *
+ * @param num_dcs       Number of DCs currently known
+ * @param dc_names      Names of the currently known DCs
+ * @param dc_ips        IP addresses of the currently known DCs
+ *
+ * @return #wbcErr
+ **/
+wbcErr wbcDcInfo(const char *domain, size_t *num_dcs,
+		 const char ***dc_names, const char ***dc_ips);
+
+/**
  * @brief Enumerate the domain trusts known by Winbind
  *
  * @param **domains     Pointer to the allocated domain list array