s3-winbind: Added a common rpc_sequence_number function.

2 files changed, 56 insertions, 0 deletions

diff --git a/source3/winbindd/winbindd_rpc.c b/source3/winbindd/winbindd_rpc.c
index a87f368d90..05638244ec 100644
--- a/source3/winbindd/winbindd_rpc.c
+++ b/source3/winbindd/winbindd_rpc.c
@@ -783,3 +783,52 @@ NTSTATUS rpc_lookup_groupmem(TALLOC_CTX *mem_ctx,
 
 	return NT_STATUS_OK;
 }
+
+/* Find the sequence number for a domain */
+NTSTATUS rpc_sequence_number(TALLOC_CTX *mem_ctx,
+			     struct rpc_pipe_client *samr_pipe,
+			     struct policy_handle *samr_policy,
+			     const char *domain_name,
+			     uint32_t *pseq)
+{
+	union samr_DomainInfo *info = NULL;
+	bool got_seq_num = false;
+	NTSTATUS status;
+
+	/* query domain info */
+	status = rpccli_samr_QueryDomainInfo(samr_pipe,
+					     mem_ctx,
+					     samr_policy,
+					     8,
+					     &info);
+	if (NT_STATUS_IS_OK(status)) {
+		*pseq = info->info8.sequence_num;
+		got_seq_num = true;
+		goto seq_num;
+	}
+
+	/* retry with info-level 2 in case the dc does not support info-level 8
+	 * (like all older samba2 and samba3 dc's) - Guenther */
+	status = rpccli_samr_QueryDomainInfo(samr_pipe,
+					     mem_ctx,
+					     samr_policy,
+					     2,
+					     &info);
+	if (NT_STATUS_IS_OK(status)) {
+		*pseq = info->general.sequence_num;
+		got_seq_num = true;
+	}
+
+seq_num:
+	if (got_seq_num) {
+		DEBUG(10,("domain_sequence_number: for domain %s is %u\n",
+			  domain_name, (unsigned) *pseq));
+	} else {
+		DEBUG(10,("domain_sequence_number: failed to get sequence "
+			  "number (%u) for domain %s\n",
+			  (unsigned) *pseq, domain_name ));
+		status = NT_STATUS_OK;
+	}
+
+	return status;
+}
diff --git a/source3/winbindd/winbindd_rpc.h b/source3/winbindd/winbindd_rpc.h
index b31718747f..fb1abd0575 100644
--- a/source3/winbindd/winbindd_rpc.h
+++ b/source3/winbindd/winbindd_rpc.h
@@ -117,4 +117,11 @@ NTSTATUS rpc_lookup_groupmem(TALLOC_CTX *mem_ctx,
 			     char ***pnames,
 			     uint32_t **pname_types);
 
+/* Find the sequence number for a domain */
+NTSTATUS rpc_sequence_number(TALLOC_CTX *mem_ctx,
+			     struct rpc_pipe_client *samr_pipe,
+			     struct policy_handle *samr_policy,
+			     const char *domain_name,
+			     uint32_t *pseq);
+
 #endif /* _WINBINDD_RPC_H_ */