s4:librpc/rpc: add dcerpc_bh_auth_session_key()

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
(cherry picked from commit 64467157479c04cb4bafa6c4ec19213009f0643f)

diff --git a/source4/librpc/rpc/dcerpc.c b/source4/librpc/rpc/dcerpc.c
index 015b71b2da7a5fe19d0acbc8de7eeafe0aebcaae..dafe1feb9a787da95c4d45ddece2fd4ccd546472 100644 (file)
--- a/source4/librpc/rpc/dcerpc.c
+++ b/source4/librpc/rpc/dcerpc.c
@@ -287,6 +287,44 @@ static void dcerpc_bh_auth_info(struct dcerpc_binding_handle *h,
        *auth_level = hs->p->conn->security_state.auth_level;
 }
 
+static NTSTATUS dcerpc_bh_auth_session_key(struct dcerpc_binding_handle *h,
+                                          TALLOC_CTX *mem_ctx,
+                                          DATA_BLOB *session_key)
+{
+       struct dcerpc_bh_state *hs = dcerpc_binding_handle_data(h,
+                                    struct dcerpc_bh_state);
+       struct dcecli_security *sec = NULL;
+       NTSTATUS status;
+
+       if (hs->p == NULL) {
+               return NT_STATUS_NO_USER_SESSION_KEY;
+       }
+
+       if (hs->p->conn == NULL) {
+               return NT_STATUS_NO_USER_SESSION_KEY;
+       }
+
+       sec = &hs->p->conn->security_state;
+
+       if (sec->auth_type == DCERPC_AUTH_TYPE_NONE) {
+               return NT_STATUS_NO_USER_SESSION_KEY;
+       }
+
+       if (sec->generic_state == NULL) {
+               return NT_STATUS_NO_USER_SESSION_KEY;
+       }
+
+       status = gensec_session_key(sec->generic_state,
+                                   mem_ctx,
+                                   session_key);
+       if (!NT_STATUS_IS_OK(status)) {
+               return status;
+       }
+
+       talloc_keep_secret(session_key->data);
+       return NT_STATUS_OK;
+}
+
 struct dcerpc_bh_raw_call_state {
        struct tevent_context *ev;
        struct dcerpc_binding_handle *h;
@@ -659,6 +697,7 @@ static const struct dcerpc_binding_handle_ops dcerpc_bh_ops = {
        .transport_encrypted    = dcerpc_bh_transport_encrypted,
        .transport_session_key  = dcerpc_bh_transport_session_key,
        .auth_info              = dcerpc_bh_auth_info,
+       .auth_session_key       = dcerpc_bh_auth_session_key,
        .raw_call_send          = dcerpc_bh_raw_call_send,
        .raw_call_recv          = dcerpc_bh_raw_call_recv,
        .disconnect_send        = dcerpc_bh_disconnect_send,