auth: Make sure auth_request_log_info() doesn't crash when there are no passdbs

auth_request_is_disabled_master_user() could have caused such crash.

diff --git a/src/auth/auth-request.c b/src/auth/auth-request.c
index dfeaa83fdad4dc47be03cdf391e338a24e6e8d6e..b2e051beaee8ef3197c77ef86a0118374d94a3af 100644 (file)
--- a/src/auth/auth-request.c
+++ b/src/auth/auth-request.c
@@ -2406,9 +2406,14 @@ void auth_request_log_info(struct auth_request *auth_request,
        if (auth_request->set->debug) {
                /* auth_debug=yes overrides auth_verbose settings */
        } else {
-               const char *db_auth_verbose = auth_request->userdb_lookup ?
-                       auth_request->userdb->set->auth_verbose :
-                       auth_request->passdb->set->auth_verbose;
+               const char *db_auth_verbose;
+
+               if (auth_request->userdb_lookup)
+                       db_auth_verbose = auth_request->userdb->set->auth_verbose;
+               else if (auth_request->passdb != NULL)
+                       db_auth_verbose = auth_request->passdb->set->auth_verbose;
+               else
+                       db_auth_verbose = "d";
                switch (db_auth_verbose[0]) {
                case 'y':
                        break;