When getting a keytab with the client with no -f option, correctly

write the keytab to standard output rather than dying with a cryptic
error.

2 files changed, 10 insertions, 1 deletions

diff --git a/NEWS b/NEWS
index 49277ad..58f16f5 100644
--- a/NEWS
+++ b/NEWS
@@ -6,6 +6,10 @@ wallet 0.6 (unreleased)
     type from krb5.conf as well as from compile-time defaults and
     command-line options.
 
+    When getting a keytab with the client with no -f option, correctly
+    write the keytab to standard output rather than dying with a cryptic
+    error.
+
     The build system now probes for GSS-API, Kerberos v5 and v4, and AFS
     libraries as necessary rather than hard-coding libraries.  Building
     on systems without strong shared library dependencies and building
diff --git a/client/keytab.c b/client/keytab.c
index 04b34c9..7554f50 100644
--- a/client/keytab.c
+++ b/client/keytab.c
@@ -79,7 +79,12 @@ get_keytab(struct remctl *r, krb5_context ctx, const char *type,
         warn("no data returned by wallet server");
         return 255;
     }
-    write_file(file, data, length);
+    if (file != NULL)
+        write_file(file, data, length);
+    else {
+        if (fwrite(data, length, 1, stdout) != 1)
+            sysdie("write to standard output failed");
+    }
     if (srvtab != NULL)
         write_srvtab(ctx, srvtab, name, file);
     return 0;