Add MM Auth test; add auth_action_str() function

Add basic MM Authentication test setup, with fake DB access and RAND_bytes().

So far implement simple tests for IO error during DB access and missing auth
entry.

To print the auth action during tests, add struct auth_action_names and
auth_action_str() inline function in auth.[hc].

1 files changed, 8 insertions, 0 deletions

diff --git a/openbsc/include/openbsc/auth.h b/openbsc/include/openbsc/auth.h
index d41d1419b..90495bb58 100644
--- a/openbsc/include/openbsc/auth.h
+++ b/openbsc/include/openbsc/auth.h
@@ -1,6 +1,8 @@
 #ifndef _AUTH_H
 #define _AUTH_H
 
+#include <osmocom/core/utils.h>
+
 struct gsm_auth_tuple;
 struct gsm_subscriber;
 
@@ -11,6 +13,12 @@ enum auth_action {
 	AUTH_DO_AUTH		= 3,	/* Only authentication, no ciphering */
 };
 
+extern const struct value_string auth_action_names[];
+static inline const char *auth_action_str(enum auth_action a)
+{
+	return get_value_string(auth_action_names, a);
+}
+
 int auth_get_tuple_for_subscr(struct gsm_auth_tuple *atuple,
                               struct gsm_subscriber *subscr, int key_seq);